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See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Dummy pkg-config file which is used to allow out of tree packages to # be configured against the libnbd tree without libnbd needing to be # installed. # # Note if you are using the ./run script then you don't need to worry # about this because the script sets PKG_CONFIG_PATH correctly. prefix=@abs_top_builddir@ exec_prefix=@abs_top_builddir@ libdir=@abs_top_builddir@/lib/.libs includedir=@abs_top_srcdir@/include Name: @PACKAGE_NAME@ Version: @PACKAGE_VERSION@ Description: NBD client library in userspace Requires: Cflags: -I${includedir} Libs: -L${libdir} -lnbd libnbd-1.20.3/lib/Makefile.am0000644000175000017500000000521014525371754011325 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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ctags-am distclean distclean-compile distclean-generic \ distclean-libtool distclean-tags distdir dvi dvi-am html \ html-am info info-am install install-am install-data \ install-data-am install-dvi install-dvi-am install-exec \ install-exec-am install-html install-html-am install-info \ install-info-am install-libLTLIBRARIES install-man install-pdf \ install-pdf-am install-pkgconfigDATA install-ps install-ps-am \ install-strip installcheck installcheck-am installdirs \ maintainer-clean maintainer-clean-generic mostlyclean \ mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ pdf pdf-am ps ps-am recheck tags tags-am uninstall \ uninstall-am uninstall-libLTLIBRARIES uninstall-pkgconfigDATA .PRECIOUS: Makefile $(generator_built): $(top_builddir)/generator/stamp-generator $(top_builddir)/generator/stamp-generator: \ $(wildcard $(top_srcdir)/generator/*.ml) \ $(wildcard $(top_srcdir)/generator/*.mli) \ $(wildcard $(top_srcdir)/generator/states*.c) $(MAKE) -C $(top_builddir)/generator stamp-generator %.cmi: %.mli $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ %.cmo: %.ml $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ @HAVE_OCAMLOPT_TRUE@%.cmx: %.ml @HAVE_OCAMLOPT_TRUE@ $(OCAMLFIND) ocamlopt $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ $(top_builddir)/podwrapper.pl: $(top_srcdir)/podwrapper.pl.in $(MAKE) -C $(top_builddir) podwrapper.pl # Tell versions [3.59,3.63) of GNU make to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: libnbd-1.20.3/lib/libnbd.pc.in0000644000175000017500000000175714525371754011470 # nbd client library in userspace # @configure_input@ # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA prefix=@prefix@ exec_prefix=@exec_prefix@ libdir=@libdir@ includedir=@includedir@ Name: @PACKAGE_NAME@ Version: @PACKAGE_VERSION@ Description: NBD client library in userspace Requires: Cflags: Libs: -lnbd libnbd-1.20.3/lib/aio.c0000644000175000017500000000777514616437241010222 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include "internal.h" /* Internal function which retires and frees a command. */ void nbd_internal_retire_and_free_command (struct command *cmd) { /* Free the callbacks. */ if (cmd->type == NBD_CMD_BLOCK_STATUS) { if (cmd->cb.wide) FREE_CALLBACK (cmd->cb.fn.extent64); else FREE_CALLBACK (cmd->cb.fn.extent32); if (cmd->ids) { uint32_vector_reset (cmd->ids); free (cmd->ids); } } if (cmd->type == NBD_CMD_READ) FREE_CALLBACK (cmd->cb.fn.chunk); FREE_CALLBACK (cmd->cb.completion); free (cmd); } int nbd_unlocked_aio_get_fd (struct nbd_handle *h) { if (!h->sock) { set_error (EINVAL, "connection is not in a connected state"); return -1; } return h->sock->ops->get_fd (h->sock); } int nbd_unlocked_aio_notify_read (struct nbd_handle *h) { return nbd_internal_run (h, notify_read); } int nbd_unlocked_aio_notify_write (struct nbd_handle *h) { return nbd_internal_run (h, notify_write); } int nbd_unlocked_aio_command_completed (struct nbd_handle *h, uint64_t cookie) { struct command *prev_cmd, *cmd; uint16_t type; uint32_t error; if (cookie < 1) { set_error (EINVAL, "invalid aio cookie %" PRId64, cookie); return -1; } /* Find the command amongst the completed commands. */ for (cmd = h->cmds_done, prev_cmd = NULL; cmd != NULL; prev_cmd = cmd, cmd = cmd->next) { if (cmd->cookie == cookie) break; } if (!cmd) return 0; type = cmd->type; error = cmd->error; assert (cmd->type != NBD_CMD_DISC); /* The spec states that a 0-length read request is unspecified; but * it is easy enough to treat it as successful as an extension. * Conversely, make sure a server sending structured replies sent * enough data chunks to cover the overall count (although we do not * detect if it duplicated some bytes while omitting others). */ if (type == NBD_CMD_READ && cmd->data_seen != cmd->count && !error) { debug (h, "server sent wrong byte length without error; using EPROTO"); error = EPROTO; } /* Retire it from the list and free it. */ if (h->cmds_done_tail == cmd) { assert (cmd->next == NULL); h->cmds_done_tail = prev_cmd; } if (prev_cmd != NULL) prev_cmd->next = cmd->next; else h->cmds_done = cmd->next; nbd_internal_retire_and_free_command (cmd); /* If the command was successful, return true. */ if (error == 0) return 1; /* The command failed, set an error indication and return an error. */ set_error (error, "%s: command failed", nbd_internal_name_of_nbd_cmd (type)); return -1; } int64_t nbd_unlocked_aio_peek_command_completed (struct nbd_handle *h) { if (h->cmds_done != NULL) { assert (h->cmds_done->type != NBD_CMD_DISC); return h->cmds_done->cookie; } if (h->cmds_in_flight != NULL || h->cmds_to_issue != NULL) { set_error (0, "no in-flight command has completed yet"); return 0; } set_error (EINVAL, "no commands are in flight"); return -1; } int nbd_unlocked_aio_in_flight (struct nbd_handle *h) { return h->in_flight; } libnbd-1.20.3/lib/api.c0000444000175000017500000054453514603303744010215 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include /* GCC will remove NULL checks from this file for any parameter * annotated with attribute((nonnull)). See RHBZ#1041336. To * avoid this, disable the attribute when including libnbd.h. */ #define LIBNBD_ATTRIBUTE_NONNULL(...) #include "libnbd.h" #include "internal.h" int nbd_set_debug ( struct nbd_handle *h, bool debug ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_debug"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: debug=%s", debug ? "true" : "false"); } ret = nbd_unlocked_set_debug (h, debug); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_debug ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_get_debug", "enter:"); } ret = nbd_unlocked_get_debug (h); if_debug (h) { debug_direct (h, "nbd_get_debug", "leave: ret=%d", ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_set_debug_callback ( struct nbd_handle *h, nbd_debug_callback debug_callback ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_debug_callback"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: debug=%s", ""); } if (CALLBACK_IS_NULL (debug_callback)) { set_error (EFAULT, "%s cannot be NULL", "debug"); ret = -1; goto out; } ret = nbd_unlocked_set_debug_callback (h, &debug_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (debug_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_clear_debug_callback ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_clear_debug_callback"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_clear_debug_callback (h); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } uint64_t nbd_stats_bytes_sent ( struct nbd_handle *h ) { uint64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_stats_bytes_sent", "enter:"); } ret = nbd_unlocked_stats_bytes_sent (h); if_debug (h) { debug_direct (h, "nbd_stats_bytes_sent", "leave: ret=%" PRIu64, ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } uint64_t nbd_stats_chunks_sent ( struct nbd_handle *h ) { uint64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_stats_chunks_sent", "enter:"); } ret = nbd_unlocked_stats_chunks_sent (h); if_debug (h) { debug_direct (h, "nbd_stats_chunks_sent", "leave: ret=%" PRIu64, ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } uint64_t nbd_stats_bytes_received ( struct nbd_handle *h ) { uint64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_stats_bytes_received", "enter:"); } ret = nbd_unlocked_stats_bytes_received (h); if_debug (h) { debug_direct (h, "nbd_stats_bytes_received", "leave: ret=%" PRIu64, ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } uint64_t nbd_stats_chunks_received ( struct nbd_handle *h ) { uint64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_stats_chunks_received", "enter:"); } ret = nbd_unlocked_stats_chunks_received (h); if_debug (h) { debug_direct (h, "nbd_stats_chunks_received", "leave: ret=%" PRIu64, ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_set_handle_name ( struct nbd_handle *h, const char *handle_name ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_handle_name"); pthread_mutex_lock (&h->lock); if_debug (h) { char *handle_name_printable = nbd_internal_printable_string (handle_name); debug (h, "enter: handle_name=%s", handle_name_printable ? handle_name_printable : ""); free (handle_name_printable); } if (handle_name == NULL) { set_error (EFAULT, "%s cannot be NULL", "handle_name"); ret = -1; goto out; } ret = nbd_unlocked_set_handle_name (h, handle_name); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } char * nbd_get_handle_name ( struct nbd_handle *h ) { char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_handle_name"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_get_handle_name (h); if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { char *ret_printable = nbd_internal_printable_string (ret); debug (h, "leave: ret=%s", ret_printable ? ret_printable : ""); free (ret_printable); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } uintptr_t nbd_set_private_data ( struct nbd_handle *h, uintptr_t private_data ) { uintptr_t ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_set_private_data", "enter: private_data=%"PRIuPTR"", private_data); } ret = nbd_unlocked_set_private_data (h, private_data); if_debug (h) { debug_direct (h, "nbd_set_private_data", "leave: ret=%" PRIuPTR, ret); } return ret; } uintptr_t nbd_get_private_data ( struct nbd_handle *h ) { uintptr_t ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_get_private_data", "enter:"); } ret = nbd_unlocked_get_private_data (h); if_debug (h) { debug_direct (h, "nbd_get_private_data", "leave: ret=%" PRIuPTR, ret); } return ret; } static inline bool set_export_name_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state) || nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created, or negotiating"); return false; } return true; } int nbd_set_export_name ( struct nbd_handle *h, const char *export_name ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_export_name"); pthread_mutex_lock (&h->lock); if_debug (h) { char *export_name_printable = nbd_internal_printable_string (export_name); debug (h, "enter: export_name=%s", export_name_printable ? export_name_printable : ""); free (export_name_printable); } p = set_export_name_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (export_name == NULL) { set_error (EFAULT, "%s cannot be NULL", "export_name"); ret = -1; goto out; } ret = nbd_unlocked_set_export_name (h, export_name); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } char * nbd_get_export_name ( struct nbd_handle *h ) { char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_export_name"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_get_export_name (h); if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { char *ret_printable = nbd_internal_printable_string (ret); debug (h, "leave: ret=%s", ret_printable ? ret_printable : ""); free (ret_printable); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_request_block_size_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state) || nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created, or negotiating"); return false; } return true; } int nbd_set_request_block_size ( struct nbd_handle *h, bool request ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_request_block_size"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: request=%s", request ? "true" : "false"); } p = set_request_block_size_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_set_request_block_size (h, request); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_request_block_size ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_request_block_size"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_get_request_block_size (h); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_full_info_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state) || nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created, or negotiating"); return false; } return true; } int nbd_set_full_info ( struct nbd_handle *h, bool request ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_full_info"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: request=%s", request ? "true" : "false"); } p = set_full_info_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_set_full_info (h, request); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_full_info ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_full_info"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_get_full_info (h); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool get_canonical_export_name_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } char * nbd_get_canonical_export_name ( struct nbd_handle *h ) { bool p; char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_canonical_export_name"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = get_canonical_export_name_in_permitted_state (h); if (unlikely (!p)) { ret = NULL; goto out; } ret = nbd_unlocked_get_canonical_export_name (h); out: if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { char *ret_printable = nbd_internal_printable_string (ret); debug (h, "leave: ret=%s", ret_printable ? ret_printable : ""); free (ret_printable); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool get_export_description_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } char * nbd_get_export_description ( struct nbd_handle *h ) { bool p; char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_export_description"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = get_export_description_in_permitted_state (h); if (unlikely (!p)) { ret = NULL; goto out; } ret = nbd_unlocked_get_export_description (h); out: if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { char *ret_printable = nbd_internal_printable_string (ret); debug (h, "leave: ret=%s", ret_printable ? ret_printable : ""); free (ret_printable); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_tls_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_tls ( struct nbd_handle *h, int tls ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_tls"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: tls=%d", tls); } p = set_tls_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } switch (tls) { case LIBNBD_TLS_DISABLE: case LIBNBD_TLS_ALLOW: case LIBNBD_TLS_REQUIRE: break; default: set_error (EINVAL, "%s: invalid value for parameter: %d", "tls", tls); ret = -1; goto out; } ret = nbd_unlocked_set_tls (h, tls); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_tls ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_get_tls", "enter:"); } ret = nbd_unlocked_get_tls (h); if_debug (h) { debug_direct (h, "nbd_get_tls", "leave: ret=%d", ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool get_tls_negotiated_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_get_tls_negotiated ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_tls_negotiated"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = get_tls_negotiated_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_get_tls_negotiated (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_tls_certificates_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_tls_certificates ( struct nbd_handle *h, const char *dir ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_tls_certificates"); pthread_mutex_lock (&h->lock); if_debug (h) { char *dir_printable = nbd_internal_printable_string (dir); debug (h, "enter: dir=%s", dir_printable ? dir_printable : ""); free (dir_printable); } p = set_tls_certificates_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (dir == NULL) { set_error (EFAULT, "%s cannot be NULL", "dir"); ret = -1; goto out; } ret = nbd_unlocked_set_tls_certificates (h, dir); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_tls_verify_peer_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_tls_verify_peer ( struct nbd_handle *h, bool verify ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_tls_verify_peer"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: verify=%s", verify ? "true" : "false"); } p = set_tls_verify_peer_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_set_tls_verify_peer (h, verify); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_tls_verify_peer ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_get_tls_verify_peer", "enter:"); } ret = nbd_unlocked_get_tls_verify_peer (h); if_debug (h) { debug_direct (h, "nbd_get_tls_verify_peer", "leave: ret=%d", ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_tls_username_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_tls_username ( struct nbd_handle *h, const char *username ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_tls_username"); pthread_mutex_lock (&h->lock); if_debug (h) { char *username_printable = nbd_internal_printable_string (username); debug (h, "enter: username=%s", username_printable ? username_printable : ""); free (username_printable); } p = set_tls_username_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (username == NULL) { set_error (EFAULT, "%s cannot be NULL", "username"); ret = -1; goto out; } ret = nbd_unlocked_set_tls_username (h, username); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } char * nbd_get_tls_username ( struct nbd_handle *h ) { char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_tls_username"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_get_tls_username (h); if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { char *ret_printable = nbd_internal_printable_string (ret); debug (h, "leave: ret=%s", ret_printable ? ret_printable : ""); free (ret_printable); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_tls_psk_file_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_tls_psk_file ( struct nbd_handle *h, const char *filename ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_tls_psk_file"); pthread_mutex_lock (&h->lock); if_debug (h) { char *filename_printable = nbd_internal_printable_string (filename); debug (h, "enter: filename=%s", filename_printable ? filename_printable : ""); free (filename_printable); } p = set_tls_psk_file_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (filename == NULL) { set_error (EFAULT, "%s cannot be NULL", "filename"); ret = -1; goto out; } ret = nbd_unlocked_set_tls_psk_file (h, filename); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_request_extended_headers_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_request_extended_headers ( struct nbd_handle *h, bool request ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_request_extended_headers"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: request=%s", request ? "true" : "false"); } p = set_request_extended_headers_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_set_request_extended_headers (h, request); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_request_extended_headers ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_get_request_extended_headers", "enter:"); } ret = nbd_unlocked_get_request_extended_headers (h); if_debug (h) { debug_direct (h, "nbd_get_request_extended_headers", "leave: ret=%d", ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool get_extended_headers_negotiated_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_get_extended_headers_negotiated ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_extended_headers_negotiated"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = get_extended_headers_negotiated_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_get_extended_headers_negotiated (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_request_structured_replies_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_request_structured_replies ( struct nbd_handle *h, bool request ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_request_structured_replies"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: request=%s", request ? "true" : "false"); } p = set_request_structured_replies_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_set_request_structured_replies (h, request); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_request_structured_replies ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_get_request_structured_replies", "enter:"); } ret = nbd_unlocked_get_request_structured_replies (h); if_debug (h) { debug_direct (h, "nbd_get_request_structured_replies", "leave: ret=%d", ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool get_structured_replies_negotiated_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_get_structured_replies_negotiated ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_structured_replies_negotiated"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = get_structured_replies_negotiated_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_get_structured_replies_negotiated (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_request_meta_context_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state) || nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created, or negotiating"); return false; } return true; } int nbd_set_request_meta_context ( struct nbd_handle *h, bool request ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_request_meta_context"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: request=%s", request ? "true" : "false"); } p = set_request_meta_context_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_set_request_meta_context (h, request); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_request_meta_context ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_request_meta_context"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_get_request_meta_context (h); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_handshake_flags_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_handshake_flags ( struct nbd_handle *h, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_handshake_flags"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: flags=0x%x", flags); } p = set_handshake_flags_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~LIBNBD_HANDSHAKE_FLAG_MASK) != 0)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_set_handshake_flags (h, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } uint32_t nbd_get_handshake_flags ( struct nbd_handle *h ) { uint32_t ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_get_handshake_flags", "enter:"); } ret = nbd_unlocked_get_handshake_flags (h); if_debug (h) { debug_direct (h, "nbd_get_handshake_flags", "leave: ret=%u", ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_set_pread_initialize ( struct nbd_handle *h, bool request ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_pread_initialize"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: request=%s", request ? "true" : "false"); } ret = nbd_unlocked_set_pread_initialize (h, request); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_pread_initialize ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_get_pread_initialize", "enter:"); } ret = nbd_unlocked_get_pread_initialize (h); if_debug (h) { debug_direct (h, "nbd_get_pread_initialize", "leave: ret=%d", ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_set_strict_mode ( struct nbd_handle *h, uint32_t flags ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_strict_mode"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: flags=0x%x", flags); } if (unlikely ((flags & ~LIBNBD_STRICT_MASK) != 0)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_set_strict_mode (h, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } uint32_t nbd_get_strict_mode ( struct nbd_handle *h ) { uint32_t ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_get_strict_mode", "enter:"); } ret = nbd_unlocked_get_strict_mode (h); if_debug (h) { debug_direct (h, "nbd_get_strict_mode", "leave: ret=%u", ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_opt_mode_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_opt_mode ( struct nbd_handle *h, bool enable ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_opt_mode"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: enable=%s", enable ? "true" : "false"); } p = set_opt_mode_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_set_opt_mode (h, enable); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_get_opt_mode ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ pthread_mutex_lock (&h->lock); if_debug (h) { debug_direct (h, "nbd_get_opt_mode", "enter:"); } ret = nbd_unlocked_get_opt_mode (h); if_debug (h) { debug_direct (h, "nbd_get_opt_mode", "leave: ret=%d", ret); } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_go_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_go ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_go"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = opt_go_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_opt_go (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_abort_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_abort ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_abort"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = opt_abort_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_opt_abort (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_starttls_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_starttls ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_starttls"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = opt_starttls_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_opt_starttls (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_extended_headers_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_extended_headers ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_extended_headers"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = opt_extended_headers_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_opt_extended_headers (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_structured_reply_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_structured_reply ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_structured_reply"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = opt_structured_reply_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_opt_structured_reply (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_list_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_list ( struct nbd_handle *h, nbd_list_callback list_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_list"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: list=%s", ""); } p = opt_list_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (list_callback)) { set_error (EFAULT, "%s cannot be NULL", "list"); ret = -1; goto out; } ret = nbd_unlocked_opt_list (h, &list_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (list_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_info_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_info ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_info"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = opt_info_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_opt_info (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_list_meta_context_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_list_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_list_meta_context"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: context=%s", ""); } p = opt_list_meta_context_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (context_callback)) { set_error (EFAULT, "%s cannot be NULL", "context"); ret = -1; goto out; } ret = nbd_unlocked_opt_list_meta_context (h, &context_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (context_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_list_meta_context_queries_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_list_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_list_meta_context_queries"); pthread_mutex_lock (&h->lock); if_debug (h) { char *queries_printable = nbd_internal_printable_string_list (queries); debug (h, "enter: queries=%s context=%s", queries_printable ? queries_printable : "", ""); free (queries_printable); } p = opt_list_meta_context_queries_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (queries == NULL) { set_error (EFAULT, "%s cannot be NULL", "queries"); ret = -1; goto out; } if (CALLBACK_IS_NULL (context_callback)) { set_error (EFAULT, "%s cannot be NULL", "context"); ret = -1; goto out; } ret = nbd_unlocked_opt_list_meta_context_queries (h, queries, &context_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (context_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_set_meta_context_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_set_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_set_meta_context"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: context=%s", ""); } p = opt_set_meta_context_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (context_callback)) { set_error (EFAULT, "%s cannot be NULL", "context"); ret = -1; goto out; } ret = nbd_unlocked_opt_set_meta_context (h, &context_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (context_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool opt_set_meta_context_queries_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_opt_set_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_opt_set_meta_context_queries"); pthread_mutex_lock (&h->lock); if_debug (h) { char *queries_printable = nbd_internal_printable_string_list (queries); debug (h, "enter: queries=%s context=%s", queries_printable ? queries_printable : "", ""); free (queries_printable); } p = opt_set_meta_context_queries_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (queries == NULL) { set_error (EFAULT, "%s cannot be NULL", "queries"); ret = -1; goto out; } if (CALLBACK_IS_NULL (context_callback)) { set_error (EFAULT, "%s cannot be NULL", "context"); ret = -1; goto out; } ret = nbd_unlocked_opt_set_meta_context_queries (h, queries, &context_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (context_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool add_meta_context_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state) || nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created, or negotiating"); return false; } return true; } int nbd_add_meta_context ( struct nbd_handle *h, const char *name ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_add_meta_context"); pthread_mutex_lock (&h->lock); if_debug (h) { char *name_printable = nbd_internal_printable_string (name); debug (h, "enter: name=%s", name_printable ? name_printable : ""); free (name_printable); } p = add_meta_context_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (name == NULL) { set_error (EFAULT, "%s cannot be NULL", "name"); ret = -1; goto out; } ret = nbd_unlocked_add_meta_context (h, name); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } ssize_t nbd_get_nr_meta_contexts ( struct nbd_handle *h ) { ssize_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_nr_meta_contexts"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_get_nr_meta_contexts (h); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%zd", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } char * nbd_get_meta_context ( struct nbd_handle *h, size_t i ) { char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_meta_context"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: i=%zu", i); } ret = nbd_unlocked_get_meta_context (h, i); if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { char *ret_printable = nbd_internal_printable_string (ret); debug (h, "leave: ret=%s", ret_printable ? ret_printable : ""); free (ret_printable); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool clear_meta_contexts_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state) || nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created, or negotiating"); return false; } return true; } int nbd_clear_meta_contexts ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_clear_meta_contexts"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = clear_meta_contexts_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_clear_meta_contexts (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_uri_allow_transports_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_uri_allow_transports ( struct nbd_handle *h, uint32_t mask ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_uri_allow_transports"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: mask=0x%x", mask); } p = set_uri_allow_transports_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((mask & ~LIBNBD_ALLOW_TRANSPORT_MASK) != 0)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "mask", mask); ret = -1; goto out; } ret = nbd_unlocked_set_uri_allow_transports (h, mask); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_uri_allow_tls_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_uri_allow_tls ( struct nbd_handle *h, int tls ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_uri_allow_tls"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: tls=%d", tls); } p = set_uri_allow_tls_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } switch (tls) { case LIBNBD_TLS_DISABLE: case LIBNBD_TLS_ALLOW: case LIBNBD_TLS_REQUIRE: break; default: set_error (EINVAL, "%s: invalid value for parameter: %d", "tls", tls); ret = -1; goto out; } ret = nbd_unlocked_set_uri_allow_tls (h, tls); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_uri_allow_local_file_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_uri_allow_local_file ( struct nbd_handle *h, bool allow ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_uri_allow_local_file"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: allow=%s", allow ? "true" : "false"); } p = set_uri_allow_local_file_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_set_uri_allow_local_file (h, allow); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool connect_uri_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_connect_uri ( struct nbd_handle *h, const char *uri ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_connect_uri"); pthread_mutex_lock (&h->lock); if_debug (h) { char *uri_printable = nbd_internal_printable_string (uri); debug (h, "enter: uri=%s", uri_printable ? uri_printable : ""); free (uri_printable); } p = connect_uri_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (uri == NULL) { set_error (EFAULT, "%s cannot be NULL", "uri"); ret = -1; goto out; } ret = nbd_unlocked_connect_uri (h, uri); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool connect_unix_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_connect_unix ( struct nbd_handle *h, const char *unixsocket ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_connect_unix"); pthread_mutex_lock (&h->lock); if_debug (h) { char *unixsocket_printable = nbd_internal_printable_string (unixsocket); debug (h, "enter: unixsocket=%s", unixsocket_printable ? unixsocket_printable : ""); free (unixsocket_printable); } p = connect_unix_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unixsocket == NULL) { set_error (EFAULT, "%s cannot be NULL", "unixsocket"); ret = -1; goto out; } ret = nbd_unlocked_connect_unix (h, unixsocket); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool connect_vsock_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_connect_vsock ( struct nbd_handle *h, uint32_t cid, uint32_t port ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_connect_vsock"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: cid=%"PRIu32" port=%"PRIu32"", cid, port); } p = connect_vsock_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_connect_vsock (h, cid, port); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool connect_tcp_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_connect_tcp ( struct nbd_handle *h, const char *hostname, const char *port ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_connect_tcp"); pthread_mutex_lock (&h->lock); if_debug (h) { char *hostname_printable = nbd_internal_printable_string (hostname); char *port_printable = nbd_internal_printable_string (port); debug (h, "enter: hostname=%s port=%s", hostname_printable ? hostname_printable : "", port_printable ? port_printable : ""); free (hostname_printable); free (port_printable); } p = connect_tcp_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (hostname == NULL) { set_error (EFAULT, "%s cannot be NULL", "hostname"); ret = -1; goto out; } if (port == NULL) { set_error (EFAULT, "%s cannot be NULL", "port"); ret = -1; goto out; } ret = nbd_unlocked_connect_tcp (h, hostname, port); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool connect_socket_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_connect_socket ( struct nbd_handle *h, int sock ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_connect_socket"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: sock=%d", sock); } p = connect_socket_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_connect_socket (h, sock); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool connect_command_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_connect_command ( struct nbd_handle *h, char **argv ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_connect_command"); pthread_mutex_lock (&h->lock); if_debug (h) { char *argv_printable = nbd_internal_printable_string_list (argv); debug (h, "enter: argv=%s", argv_printable ? argv_printable : ""); free (argv_printable); } p = connect_command_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (argv == NULL) { set_error (EFAULT, "%s cannot be NULL", "argv"); ret = -1; goto out; } ret = nbd_unlocked_connect_command (h, argv); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool connect_systemd_socket_activation_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_connect_systemd_socket_activation ( struct nbd_handle *h, char **argv ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_connect_systemd_socket_activation"); pthread_mutex_lock (&h->lock); if_debug (h) { char *argv_printable = nbd_internal_printable_string_list (argv); debug (h, "enter: argv=%s", argv_printable ? argv_printable : ""); free (argv_printable); } p = connect_systemd_socket_activation_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (argv == NULL) { set_error (EFAULT, "%s cannot be NULL", "argv"); ret = -1; goto out; } ret = nbd_unlocked_connect_systemd_socket_activation (h, argv); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool set_socket_activation_name_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_set_socket_activation_name ( struct nbd_handle *h, const char *socket_name ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_set_socket_activation_name"); pthread_mutex_lock (&h->lock); if_debug (h) { char *socket_name_printable = nbd_internal_printable_string (socket_name); debug (h, "enter: socket_name=%s", socket_name_printable ? socket_name_printable : ""); free (socket_name_printable); } p = set_socket_activation_name_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (socket_name == NULL) { set_error (EFAULT, "%s cannot be NULL", "socket_name"); ret = -1; goto out; } ret = nbd_unlocked_set_socket_activation_name (h, socket_name); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } char * nbd_get_socket_activation_name ( struct nbd_handle *h ) { char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_socket_activation_name"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_get_socket_activation_name (h); if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { char *ret_printable = nbd_internal_printable_string (ret); debug (h, "leave: ret=%s", ret_printable ? ret_printable : ""); free (ret_printable); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool is_read_only_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_is_read_only ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_is_read_only"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = is_read_only_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_is_read_only (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_flush_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_flush ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_flush"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = can_flush_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_can_flush (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_fua_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_fua ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_fua"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = can_fua_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_can_fua (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool is_rotational_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_is_rotational ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_is_rotational"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = is_rotational_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_is_rotational (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_trim_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_trim ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_trim"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = can_trim_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_can_trim (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_zero_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_zero ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_zero"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = can_zero_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_can_zero (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_fast_zero_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_fast_zero ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_fast_zero"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = can_fast_zero_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_can_fast_zero (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_block_status_payload_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_block_status_payload ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_block_status_payload"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = can_block_status_payload_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_can_block_status_payload (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_df_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_df ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_df"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = can_df_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_can_df (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_multi_conn_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_multi_conn ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_multi_conn"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = can_multi_conn_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_can_multi_conn (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_cache_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_cache ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_cache"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = can_cache_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_can_cache (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool can_meta_context_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int nbd_can_meta_context ( struct nbd_handle *h, const char *metacontext ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_can_meta_context"); pthread_mutex_lock (&h->lock); if_debug (h) { char *metacontext_printable = nbd_internal_printable_string (metacontext); debug (h, "enter: metacontext=%s", metacontext_printable ? metacontext_printable : ""); free (metacontext_printable); } p = can_meta_context_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (metacontext == NULL) { set_error (EFAULT, "%s cannot be NULL", "metacontext"); ret = -1; goto out; } ret = nbd_unlocked_can_meta_context (h, metacontext); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool get_protocol_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } const char * nbd_get_protocol ( struct nbd_handle *h ) { bool p; const char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_protocol"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = get_protocol_in_permitted_state (h); if (unlikely (!p)) { ret = NULL; goto out; } ret = nbd_unlocked_get_protocol (h); out: if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%s", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool get_size_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int64_t nbd_get_size ( struct nbd_handle *h ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_size"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = get_size_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_get_size (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool get_block_size_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server, or shut down"); return false; } return true; } int64_t nbd_get_block_size ( struct nbd_handle *h, int size_type ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_block_size"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: size_type=%d", size_type); } p = get_block_size_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } switch (size_type) { case LIBNBD_SIZE_MINIMUM: case LIBNBD_SIZE_PREFERRED: case LIBNBD_SIZE_MAXIMUM: case LIBNBD_SIZE_PAYLOAD: break; default: set_error (EINVAL, "%s: invalid value for parameter: %d", "size_type", size_type); ret = -1; goto out; } ret = nbd_unlocked_get_block_size (h, size_type); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool pread_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_pread ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_pread"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: buf= count=%zu offset=%"PRIu64" flags=0x%x", count, offset, flags); } if (h->pread_initialize) memset (buf, 0, count); p = pread_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (buf == NULL) { set_error (EFAULT, "%s cannot be NULL", "buf"); ret = -1; goto out; } if (unlikely ((flags & ~0) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_pread (h, buf, count, offset, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool pread_structured_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_pread_structured ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_pread_structured"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: buf= count=%zu offset=%"PRIu64" chunk=%s flags=0x%x", count, offset, "", flags); } if (h->pread_initialize) memset (buf, 0, count); p = pread_structured_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (buf == NULL) { set_error (EFAULT, "%s cannot be NULL", "buf"); ret = -1; goto out; } if (CALLBACK_IS_NULL (chunk_callback)) { set_error (EFAULT, "%s cannot be NULL", "chunk"); ret = -1; goto out; } if (unlikely ((flags & ~0x4) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_pread_structured (h, buf, count, offset, &chunk_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (chunk_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool pwrite_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_pwrite ( struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_pwrite"); pthread_mutex_lock (&h->lock); if_debug (h) { char *buf_printable = nbd_internal_printable_buffer (buf, count); debug (h, "enter: buf=\"%s\" count=%zu offset=%"PRIu64" flags=0x%x", buf_printable ? buf_printable : "", count, offset, flags); free (buf_printable); } p = pwrite_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (buf == NULL) { set_error (EFAULT, "%s cannot be NULL", "buf"); ret = -1; goto out; } if (unlikely ((flags & ~0x21) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_pwrite (h, buf, count, offset, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool shutdown_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating, or connected with the server"); return false; } return true; } int nbd_shutdown ( struct nbd_handle *h, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_shutdown"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: flags=0x%x", flags); } p = shutdown_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~LIBNBD_SHUTDOWN_MASK) != 0)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_shutdown (h, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool flush_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_flush ( struct nbd_handle *h, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_flush"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: flags=0x%x", flags); } p = flush_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~0) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_flush (h, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool trim_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_trim ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_trim"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" flags=0x%x", count, offset, flags); } p = trim_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~0x1) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_trim (h, count, offset, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool cache_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_cache ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_cache"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" flags=0x%x", count, offset, flags); } p = cache_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~0) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_cache (h, count, offset, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool zero_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_zero ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_zero"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" flags=0x%x", count, offset, flags); } p = zero_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~0x13) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_zero (h, count, offset, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool block_status_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_block_status ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_block_status"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" extent=%s flags=0x%x", count, offset, "", flags); } p = block_status_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (extent_callback)) { set_error (EFAULT, "%s cannot be NULL", "extent"); ret = -1; goto out; } if (unlikely ((flags & ~0x8) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_block_status (h, count, offset, &extent_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (extent_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool block_status_64_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_block_status_64 ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_block_status_64"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" extent64=%s flags=0x%x", count, offset, "", flags); } p = block_status_64_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (extent64_callback)) { set_error (EFAULT, "%s cannot be NULL", "extent64"); ret = -1; goto out; } if (unlikely ((flags & ~0x8) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_block_status_64 (h, count, offset, &extent64_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (extent64_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool block_status_filter_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_block_status_filter ( struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_block_status_filter"); pthread_mutex_lock (&h->lock); if_debug (h) { char *contexts_printable = nbd_internal_printable_string_list (contexts); debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" contexts=%s " "extent64=%s flags=0x%x", count, offset, contexts_printable ? contexts_printable : "", "", flags); free (contexts_printable); } p = block_status_filter_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (contexts == NULL) { set_error (EFAULT, "%s cannot be NULL", "contexts"); ret = -1; goto out; } if (CALLBACK_IS_NULL (extent64_callback)) { set_error (EFAULT, "%s cannot be NULL", "extent64"); ret = -1; goto out; } if (unlikely ((flags & ~0x28) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_block_status_filter (h, count, offset, contexts, &extent64_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (extent64_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_poll ( struct nbd_handle *h, int timeout ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_poll"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: timeout=%d", timeout); } ret = nbd_unlocked_poll (h, timeout); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_poll2 ( struct nbd_handle *h, int fd, int timeout ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_poll2"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: fd=%d timeout=%d", fd, timeout); } ret = nbd_unlocked_poll2 (h, fd, timeout); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_connect_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_aio_connect ( struct nbd_handle *h, const struct sockaddr *addr, socklen_t addrlen ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_connect"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: addr= addrlen=%d", (int) addrlen); } p = aio_connect_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (addr == NULL) { set_error (EFAULT, "%s cannot be NULL", "addr"); ret = -1; goto out; } ret = nbd_unlocked_aio_connect (h, addr, addrlen); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_connect_uri_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_aio_connect_uri ( struct nbd_handle *h, const char *uri ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_connect_uri"); pthread_mutex_lock (&h->lock); if_debug (h) { char *uri_printable = nbd_internal_printable_string (uri); debug (h, "enter: uri=%s", uri_printable ? uri_printable : ""); free (uri_printable); } p = aio_connect_uri_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (uri == NULL) { set_error (EFAULT, "%s cannot be NULL", "uri"); ret = -1; goto out; } ret = nbd_unlocked_aio_connect_uri (h, uri); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_connect_unix_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_aio_connect_unix ( struct nbd_handle *h, const char *unixsocket ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_connect_unix"); pthread_mutex_lock (&h->lock); if_debug (h) { char *unixsocket_printable = nbd_internal_printable_string (unixsocket); debug (h, "enter: unixsocket=%s", unixsocket_printable ? unixsocket_printable : ""); free (unixsocket_printable); } p = aio_connect_unix_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unixsocket == NULL) { set_error (EFAULT, "%s cannot be NULL", "unixsocket"); ret = -1; goto out; } ret = nbd_unlocked_aio_connect_unix (h, unixsocket); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_connect_vsock_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_aio_connect_vsock ( struct nbd_handle *h, uint32_t cid, uint32_t port ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_connect_vsock"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: cid=%"PRIu32" port=%"PRIu32"", cid, port); } p = aio_connect_vsock_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_aio_connect_vsock (h, cid, port); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_connect_tcp_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_aio_connect_tcp ( struct nbd_handle *h, const char *hostname, const char *port ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_connect_tcp"); pthread_mutex_lock (&h->lock); if_debug (h) { char *hostname_printable = nbd_internal_printable_string (hostname); char *port_printable = nbd_internal_printable_string (port); debug (h, "enter: hostname=%s port=%s", hostname_printable ? hostname_printable : "", port_printable ? port_printable : ""); free (hostname_printable); free (port_printable); } p = aio_connect_tcp_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (hostname == NULL) { set_error (EFAULT, "%s cannot be NULL", "hostname"); ret = -1; goto out; } if (port == NULL) { set_error (EFAULT, "%s cannot be NULL", "port"); ret = -1; goto out; } ret = nbd_unlocked_aio_connect_tcp (h, hostname, port); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_connect_socket_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_aio_connect_socket ( struct nbd_handle *h, int sock ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_connect_socket"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: sock=%d", sock); } p = aio_connect_socket_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_aio_connect_socket (h, sock); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_connect_command_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_aio_connect_command ( struct nbd_handle *h, char **argv ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_connect_command"); pthread_mutex_lock (&h->lock); if_debug (h) { char *argv_printable = nbd_internal_printable_string_list (argv); debug (h, "enter: argv=%s", argv_printable ? argv_printable : ""); free (argv_printable); } p = aio_connect_command_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (argv == NULL) { set_error (EFAULT, "%s cannot be NULL", "argv"); ret = -1; goto out; } ret = nbd_unlocked_aio_connect_command (h, argv); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_connect_systemd_socket_activation_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_created (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "newly created"); return false; } return true; } int nbd_aio_connect_systemd_socket_activation ( struct nbd_handle *h, char **argv ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_connect_systemd_socket_activation"); pthread_mutex_lock (&h->lock); if_debug (h) { char *argv_printable = nbd_internal_printable_string_list (argv); debug (h, "enter: argv=%s", argv_printable ? argv_printable : ""); free (argv_printable); } p = aio_connect_systemd_socket_activation_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (argv == NULL) { set_error (EFAULT, "%s cannot be NULL", "argv"); ret = -1; goto out; } ret = nbd_unlocked_aio_connect_systemd_socket_activation (h, argv); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_go_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_go ( struct nbd_handle *h, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_go"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: completion=%s", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); } p = aio_opt_go_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_aio_opt_go (h, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_abort_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_abort ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_abort"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = aio_opt_abort_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_aio_opt_abort (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_starttls_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_starttls ( struct nbd_handle *h, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_starttls"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: completion=%s", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); } p = aio_opt_starttls_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_aio_opt_starttls (h, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_extended_headers_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_extended_headers ( struct nbd_handle *h, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_extended_headers"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: completion=%s", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); } p = aio_opt_extended_headers_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_aio_opt_extended_headers (h, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_structured_reply_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_structured_reply ( struct nbd_handle *h, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_structured_reply"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: completion=%s", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); } p = aio_opt_structured_reply_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_aio_opt_structured_reply (h, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_list_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_list ( struct nbd_handle *h, nbd_list_callback list_callback, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_list"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: list=%s completion=%s", "", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); } p = aio_opt_list_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (list_callback)) { set_error (EFAULT, "%s cannot be NULL", "list"); ret = -1; goto out; } ret = nbd_unlocked_aio_opt_list (h, &list_callback, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (list_callback); FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_info_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_info ( struct nbd_handle *h, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_info"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: completion=%s", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); } p = aio_opt_info_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_aio_opt_info (h, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_list_meta_context_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_list_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_list_meta_context"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: context=%s completion=%s", "", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); } p = aio_opt_list_meta_context_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (context_callback)) { set_error (EFAULT, "%s cannot be NULL", "context"); ret = -1; goto out; } ret = nbd_unlocked_aio_opt_list_meta_context (h, &context_callback, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (context_callback); FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_list_meta_context_queries_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_list_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_list_meta_context_queries"); pthread_mutex_lock (&h->lock); if_debug (h) { char *queries_printable = nbd_internal_printable_string_list (queries); debug (h, "enter: queries=%s context=%s completion=%s", queries_printable ? queries_printable : "", "", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); free (queries_printable); } p = aio_opt_list_meta_context_queries_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (queries == NULL) { set_error (EFAULT, "%s cannot be NULL", "queries"); ret = -1; goto out; } if (CALLBACK_IS_NULL (context_callback)) { set_error (EFAULT, "%s cannot be NULL", "context"); ret = -1; goto out; } ret = nbd_unlocked_aio_opt_list_meta_context_queries (h, queries, &context_callback, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (context_callback); FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_set_meta_context_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_set_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_set_meta_context"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: context=%s completion=%s", "", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); } p = aio_opt_set_meta_context_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (context_callback)) { set_error (EFAULT, "%s cannot be NULL", "context"); ret = -1; goto out; } ret = nbd_unlocked_aio_opt_set_meta_context (h, &context_callback, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (context_callback); FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_opt_set_meta_context_queries_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_negotiating (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "negotiating"); return false; } return true; } int nbd_aio_opt_set_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_opt_set_meta_context_queries"); pthread_mutex_lock (&h->lock); if_debug (h) { char *queries_printable = nbd_internal_printable_string_list (queries); debug (h, "enter: queries=%s context=%s completion=%s", queries_printable ? queries_printable : "", "", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL"); free (queries_printable); } p = aio_opt_set_meta_context_queries_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (queries == NULL) { set_error (EFAULT, "%s cannot be NULL", "queries"); ret = -1; goto out; } if (CALLBACK_IS_NULL (context_callback)) { set_error (EFAULT, "%s cannot be NULL", "context"); ret = -1; goto out; } ret = nbd_unlocked_aio_opt_set_meta_context_queries (h, queries, &context_callback, &completion_callback); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } FREE_CALLBACK (context_callback); FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_pread_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_pread ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_pread"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: buf= count=%zu offset=%"PRIu64" completion=%s " "flags=0x%x", count, offset, CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); } if (h->pread_initialize) memset (buf, 0, count); p = aio_pread_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (buf == NULL) { set_error (EFAULT, "%s cannot be NULL", "buf"); ret = -1; goto out; } if (unlikely ((flags & ~0) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_pread (h, buf, count, offset, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_pread_structured_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_pread_structured ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_pread_structured"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: buf= count=%zu offset=%"PRIu64" chunk=%s " "completion=%s flags=0x%x", count, offset, "", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); } if (h->pread_initialize) memset (buf, 0, count); p = aio_pread_structured_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (buf == NULL) { set_error (EFAULT, "%s cannot be NULL", "buf"); ret = -1; goto out; } if (CALLBACK_IS_NULL (chunk_callback)) { set_error (EFAULT, "%s cannot be NULL", "chunk"); ret = -1; goto out; } if (unlikely ((flags & ~0x4) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_pread_structured (h, buf, count, offset, &chunk_callback, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (chunk_callback); FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_pwrite_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_pwrite ( struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_pwrite"); pthread_mutex_lock (&h->lock); if_debug (h) { char *buf_printable = nbd_internal_printable_buffer (buf, count); debug (h, "enter: buf=\"%s\" count=%zu offset=%"PRIu64" completion=%s " "flags=0x%x", buf_printable ? buf_printable : "", count, offset, CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); free (buf_printable); } p = aio_pwrite_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (buf == NULL) { set_error (EFAULT, "%s cannot be NULL", "buf"); ret = -1; goto out; } if (unlikely ((flags & ~0x21) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_pwrite (h, buf, count, offset, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_disconnect_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int nbd_aio_disconnect ( struct nbd_handle *h, uint32_t flags ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_disconnect"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: flags=0x%x", flags); } p = aio_disconnect_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~0) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_disconnect (h, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_flush_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_flush ( struct nbd_handle *h, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_flush"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: completion=%s flags=0x%x", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); } p = aio_flush_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~0) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_flush (h, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_trim_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_trim ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_trim"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" completion=%s " "flags=0x%x", count, offset, CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); } p = aio_trim_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~0x1) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_trim (h, count, offset, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_cache_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_cache ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_cache"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" completion=%s " "flags=0x%x", count, offset, CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); } p = aio_cache_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~0) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_cache (h, count, offset, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_zero_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_zero ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_zero"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" completion=%s " "flags=0x%x", count, offset, CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); } p = aio_zero_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (unlikely ((flags & ~0x13) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_zero (h, count, offset, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_block_status_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_block_status ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_block_status"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" extent=%s " "completion=%s flags=0x%x", count, offset, "", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); } p = aio_block_status_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (extent_callback)) { set_error (EFAULT, "%s cannot be NULL", "extent"); ret = -1; goto out; } if (unlikely ((flags & ~0x8) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_block_status (h, count, offset, &extent_callback, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (extent_callback); FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_block_status_64_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_block_status_64 ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_block_status_64"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" extent64=%s " "completion=%s flags=0x%x", count, offset, "", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); } p = aio_block_status_64_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (CALLBACK_IS_NULL (extent64_callback)) { set_error (EFAULT, "%s cannot be NULL", "extent64"); ret = -1; goto out; } if (unlikely ((flags & ~0x8) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_block_status_64 (h, count, offset, &extent64_callback, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (extent64_callback); FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_block_status_filter_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server"); return false; } return true; } int64_t nbd_aio_block_status_filter ( struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags ) { bool p; int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_block_status_filter"); pthread_mutex_lock (&h->lock); if_debug (h) { char *contexts_printable = nbd_internal_printable_string_list (contexts); debug (h, "enter: count=%"PRIu64" offset=%"PRIu64" contexts=%s " "extent64=%s completion=%s flags=0x%x", count, offset, contexts_printable ? contexts_printable : "", "", CALLBACK_IS_NULL (completion_callback) ? "" : "NULL", flags); free (contexts_printable); } p = aio_block_status_filter_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } if (contexts == NULL) { set_error (EFAULT, "%s cannot be NULL", "contexts"); ret = -1; goto out; } if (CALLBACK_IS_NULL (extent64_callback)) { set_error (EFAULT, "%s cannot be NULL", "extent64"); ret = -1; goto out; } if (unlikely ((flags & ~0x28) != 0) && ((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)) { set_error (EINVAL, "%s: invalid value for flag: 0x%x", "flags", flags); ret = -1; goto out; } ret = nbd_unlocked_aio_block_status_filter (h, count, offset, contexts, &extent64_callback, &completion_callback, flags); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } FREE_CALLBACK (extent64_callback); FREE_CALLBACK (completion_callback); if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_aio_get_fd ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_get_fd"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_aio_get_fd (h); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } unsigned nbd_aio_get_direction ( struct nbd_handle *h ) { unsigned ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_aio_get_direction", "enter:"); } ret = nbd_unlocked_aio_get_direction (h); if_debug (h) { debug_direct (h, "nbd_aio_get_direction", "leave: ret=%u", ret); } return ret; } int nbd_aio_notify_read ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_notify_read"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_aio_notify_read (h); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_aio_notify_write ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_notify_write"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_aio_notify_write (h); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_aio_is_created ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_aio_is_created", "enter:"); } ret = nbd_unlocked_aio_is_created (h); if_debug (h) { debug_direct (h, "nbd_aio_is_created", "leave: ret=%d", ret); } return ret; } int nbd_aio_is_connecting ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_aio_is_connecting", "enter:"); } ret = nbd_unlocked_aio_is_connecting (h); if_debug (h) { debug_direct (h, "nbd_aio_is_connecting", "leave: ret=%d", ret); } return ret; } int nbd_aio_is_negotiating ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_aio_is_negotiating", "enter:"); } ret = nbd_unlocked_aio_is_negotiating (h); if_debug (h) { debug_direct (h, "nbd_aio_is_negotiating", "leave: ret=%d", ret); } return ret; } int nbd_aio_is_ready ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_aio_is_ready", "enter:"); } ret = nbd_unlocked_aio_is_ready (h); if_debug (h) { debug_direct (h, "nbd_aio_is_ready", "leave: ret=%d", ret); } return ret; } int nbd_aio_is_processing ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_aio_is_processing", "enter:"); } ret = nbd_unlocked_aio_is_processing (h); if_debug (h) { debug_direct (h, "nbd_aio_is_processing", "leave: ret=%d", ret); } return ret; } int nbd_aio_is_dead ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_aio_is_dead", "enter:"); } ret = nbd_unlocked_aio_is_dead (h); if_debug (h) { debug_direct (h, "nbd_aio_is_dead", "leave: ret=%d", ret); } return ret; } int nbd_aio_is_closed ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_aio_is_closed", "enter:"); } ret = nbd_unlocked_aio_is_closed (h); if_debug (h) { debug_direct (h, "nbd_aio_is_closed", "leave: ret=%d", ret); } return ret; } int nbd_aio_command_completed ( struct nbd_handle *h, uint64_t cookie ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_command_completed"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: cookie=%"PRIu64"", cookie); } ret = nbd_unlocked_aio_command_completed (h, cookie); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int64_t nbd_aio_peek_command_completed ( struct nbd_handle *h ) { int64_t ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_peek_command_completed"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_aio_peek_command_completed (h); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%" PRIi64, ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } static inline bool aio_in_flight_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state) || nbd_internal_is_state_dead (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connected with the server, or shut down, or dead"); return false; } return true; } int nbd_aio_in_flight ( struct nbd_handle *h ) { bool p; int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_aio_in_flight"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = aio_in_flight_in_permitted_state (h); if (unlikely (!p)) { ret = -1; goto out; } ret = nbd_unlocked_aio_in_flight (h); out: if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } const char * nbd_connection_state ( struct nbd_handle *h ) { const char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_connection_state"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } ret = nbd_unlocked_connection_state (h); if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%s", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } const char * nbd_get_package_name ( struct nbd_handle *h ) { const char * ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_get_package_name", "enter:"); } ret = nbd_unlocked_get_package_name (h); if_debug (h) { debug_direct (h, "nbd_get_package_name", "leave: ret=%s", ret); } return ret; } const char * nbd_get_version ( struct nbd_handle *h ) { const char * ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_get_version", "enter:"); } ret = nbd_unlocked_get_version (h); if_debug (h) { debug_direct (h, "nbd_get_version", "leave: ret=%s", ret); } return ret; } int nbd_kill_subprocess ( struct nbd_handle *h, int signum ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_kill_subprocess"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter: signum=%d", signum); } ret = nbd_unlocked_kill_subprocess (h, signum); if_debug (h) { if (ret == -1) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { debug (h, "leave: ret=%d", ret); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } int nbd_supports_tls ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_supports_tls", "enter:"); } ret = nbd_unlocked_supports_tls (h); if_debug (h) { debug_direct (h, "nbd_supports_tls", "leave: ret=%d", ret); } return ret; } int nbd_supports_vsock ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_supports_vsock", "enter:"); } ret = nbd_unlocked_supports_vsock (h); if_debug (h) { debug_direct (h, "nbd_supports_vsock", "leave: ret=%d", ret); } return ret; } int nbd_supports_uri ( struct nbd_handle *h ) { int ret; assert (h->magic == NBD_HANDLE_MAGIC); /* This function must not call set_error. */ if_debug (h) { debug_direct (h, "nbd_supports_uri", "enter:"); } ret = nbd_unlocked_supports_uri (h); if_debug (h) { debug_direct (h, "nbd_supports_uri", "leave: ret=%d", ret); } return ret; } static inline bool get_uri_in_permitted_state (struct nbd_handle *h) { const enum state state = get_public_state (h); if (!(nbd_internal_is_state_connecting (state) || nbd_internal_is_state_negotiating (state) || nbd_internal_is_state_ready (state) || nbd_internal_is_state_processing (state) || nbd_internal_is_state_closed (state) || nbd_internal_is_state_dead (state))) { set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL, "invalid state: %s: the handle must be %s", nbd_internal_state_short_string (state), "connecting, or negotiating, or connected with the server, " "or shut down, or dead"); return false; } return true; } char * nbd_get_uri ( struct nbd_handle *h ) { bool p; char * ret; assert (h->magic == NBD_HANDLE_MAGIC); nbd_internal_set_error_context ("nbd_get_uri"); pthread_mutex_lock (&h->lock); if_debug (h) { debug (h, "enter:"); } p = get_uri_in_permitted_state (h); if (unlikely (!p)) { ret = NULL; goto out; } ret = nbd_unlocked_get_uri (h); out: if_debug (h) { if (ret == NULL) debug (h, "leave: error=\"%s\"", nbd_get_error ()); else { char *ret_printable = nbd_internal_printable_string (ret); debug (h, "leave: ret=%s", ret_printable ? ret_printable : ""); free (ret_printable); } } if (h->public_state != get_next_state (h)) h->public_state = get_next_state (h); pthread_mutex_unlock (&h->lock); return ret; } libnbd-1.20.3/lib/connect.c0000644000175000017500000001515114616437241011066 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_LINUX_VM_SOCKETS_H #include #elif HAVE_SYS_VSOCK_H #include #endif #include "internal.h" static int error_unless_ready (struct nbd_handle *h) { if (nbd_internal_is_state_ready (get_next_state (h)) || nbd_internal_is_state_negotiating (get_next_state (h))) return 0; /* Why did it fail? */ if (nbd_internal_is_state_closed (get_next_state (h))) { set_error (0, "connection is closed"); return -1; } if (nbd_internal_is_state_dead (get_next_state (h))) /* Don't set the error here, keep the error set when * the connection died. */ return -1; /* Should probably never happen. */ set_error (0, "connection in an unexpected state (%s)", nbd_internal_state_short_string (get_next_state (h))); return -1; } int nbd_internal_wait_until_connected (struct nbd_handle *h) { while (nbd_internal_is_state_connecting (get_next_state (h))) { if (nbd_unlocked_poll (h, -1) == -1) return -1; } return error_unless_ready (h); } /* Connect to a Unix domain socket. */ int nbd_unlocked_connect_unix (struct nbd_handle *h, const char *unixsocket) { if (nbd_unlocked_aio_connect_unix (h, unixsocket) == -1) return -1; return nbd_internal_wait_until_connected (h); } /* Connect to a vsock. */ int nbd_unlocked_connect_vsock (struct nbd_handle *h, uint32_t cid, uint32_t port) { if (nbd_unlocked_aio_connect_vsock (h, cid, port) == -1) return -1; return nbd_internal_wait_until_connected (h); } /* Connect to a TCP port. */ int nbd_unlocked_connect_tcp (struct nbd_handle *h, const char *hostname, const char *port) { if (nbd_unlocked_aio_connect_tcp (h, hostname, port) == -1) return -1; return nbd_internal_wait_until_connected (h); } /* Connect to a connected socket. */ int nbd_unlocked_connect_socket (struct nbd_handle *h, int sock) { if (nbd_unlocked_aio_connect_socket (h, sock) == -1) return -1; return nbd_internal_wait_until_connected (h); } /* Connect to a local command. */ int nbd_unlocked_connect_command (struct nbd_handle *h, char **argv) { if (nbd_unlocked_aio_connect_command (h, argv) == -1) return -1; return nbd_internal_wait_until_connected (h); } /* Connect to a local command, use systemd socket activation. */ int nbd_unlocked_connect_systemd_socket_activation (struct nbd_handle *h, char **argv) { if (nbd_unlocked_aio_connect_systemd_socket_activation (h, argv) == -1) return -1; return nbd_internal_wait_until_connected (h); } int nbd_unlocked_aio_connect (struct nbd_handle *h, const struct sockaddr *addr, socklen_t len) { memcpy (&h->connaddr, addr, len); h->connaddrlen = len; return nbd_internal_run (h, cmd_connect_sockaddr); } int nbd_unlocked_aio_connect_unix (struct nbd_handle *h, const char *unixsocket) { struct sockaddr_un sun = { .sun_family = AF_UNIX }; socklen_t len; size_t namelen; namelen = strlen (unixsocket); if (namelen > sizeof sun.sun_path) { set_error (ENAMETOOLONG, "socket name too long: %s", unixsocket); return -1; } memcpy (sun.sun_path, unixsocket, namelen); len = sizeof sun; memcpy (&h->connaddr, &sun, len); h->connaddrlen = len; return nbd_internal_run (h, cmd_connect_sockaddr); } int nbd_unlocked_aio_connect_vsock (struct nbd_handle *h, uint32_t cid, uint32_t port) { #if HAVE_STRUCT_SOCKADDR_VM struct sockaddr_vm svm = { .svm_family = AF_VSOCK, .svm_cid = cid, .svm_port = port, }; const socklen_t len = sizeof svm; memcpy (&h->connaddr, &svm, len); h->connaddrlen = len; return nbd_internal_run (h, cmd_connect_sockaddr); #else set_error (ENOTSUP, "AF_VSOCK protocol is not supported"); return -1; #endif } int nbd_unlocked_aio_connect_tcp (struct nbd_handle *h, const char *hostname, const char *port) { if (h->hostname) free (h->hostname); h->hostname = strdup (hostname); if (!h->hostname) { set_error (errno, "strdup"); return -1; } if (h->port) free (h->port); h->port = strdup (port); if (!h->port) { set_error (errno, "strdup"); return -1; } return nbd_internal_run (h, cmd_connect_tcp); } int nbd_unlocked_aio_connect_socket (struct nbd_handle *h, int sock) { int flags; /* Set O_NONBLOCK on the file and FD_CLOEXEC on the file descriptor. * We can't trust that the calling process did either of these. */ flags = fcntl (sock, F_GETFL, 0); if (flags == -1 || fcntl (sock, F_SETFL, flags|O_NONBLOCK) == -1) { set_error (errno, "fcntl: set O_NONBLOCK"); close (sock); return -1; } flags = fcntl (sock, F_GETFD, 0); if (flags == -1 || fcntl (sock, F_SETFD, flags|FD_CLOEXEC) == -1) { set_error (errno, "fcntl: set FD_CLOEXEC"); close (sock); return -1; } h->sock = nbd_internal_socket_create (sock); if (!h->sock) { close (sock); return -1; } /* This jumps straight to %MAGIC.START (to start the handshake) * because the socket is already connected. */ return nbd_internal_run (h, cmd_connect_socket); } int nbd_unlocked_aio_connect_command (struct nbd_handle *h, char **argv) { if (nbd_internal_set_argv (h, argv) == -1) return -1; return nbd_internal_run (h, cmd_connect_command); } int nbd_unlocked_aio_connect_systemd_socket_activation (struct nbd_handle *h, char **argv) { if (nbd_internal_set_argv (h, argv) == -1) return -1; return nbd_internal_run (h, cmd_connect_sa); } libnbd-1.20.3/lib/crypto.c0000644000175000017500000004762514675531616010776 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #ifdef HAVE_GNUTLS #include /* See comment in configure.ac */ #ifdef HAVE_GNUTLS_SOCKET_H #include #endif #endif #include "internal.h" #include "nbdkit-string.h" int nbd_unlocked_set_tls (struct nbd_handle *h, int tls) { #ifdef HAVE_GNUTLS h->tls = tls; return 0; #else /* Don't allow setting this to any non-zero value, but setting it to * 0 (disable TLS) is OK. */ if (tls != 0) { set_error (ENOTSUP, "libnbd was compiled without TLS support"); return -1; } return 0; #endif } /* NB: may_set_error = false. */ int nbd_unlocked_get_tls (struct nbd_handle *h) { return h->tls; } int nbd_unlocked_get_tls_negotiated (struct nbd_handle *h) { return h->tls_negotiated; } int nbd_unlocked_set_tls_certificates (struct nbd_handle *h, const char *dir) { char *new_dir; new_dir = strdup (dir); if (!new_dir) { set_error (errno, "strdup"); return -1; } free (h->tls_certificates); h->tls_certificates = new_dir; return 0; } /* NB: may_set_error = false. */ int nbd_unlocked_set_tls_verify_peer (struct nbd_handle *h, bool verify) { h->tls_verify_peer = verify; return 0; } int nbd_unlocked_get_tls_verify_peer (struct nbd_handle *h) { return h->tls_verify_peer; } int nbd_unlocked_set_tls_username (struct nbd_handle *h, const char *username) { char *new_user; new_user = strdup (username); if (!new_user) { set_error (errno, "strdup"); return -1; } free (h->tls_username); h->tls_username = new_user; return 0; } char * nbd_unlocked_get_tls_username (struct nbd_handle *h) { char *s, *ret; string str = empty_vector; if (h->tls_username) { ret = strdup (h->tls_username); if (ret == NULL) { set_error (errno, "strdup"); return NULL; } return ret; } /* Otherwise we return the local login name. Try $LOGNAME first for * two reasons: (1) So the user can override it. (2) Because * getlogin fails with ENXIO if there is no controlling terminal * (which is often the case in test and embedded environments). */ s = getenv ("LOGNAME"); if (s) { ret = strdup (s); if (ret == NULL) { set_error (errno, "strdup"); return NULL; } return ret; } for (;;) { /* Increase capacity (str.cap starts at 0) */ if (string_reserve (&str, 16) == -1) { set_error (errno, "realloc"); free (str.ptr); return NULL; } if (getlogin_r (str.ptr, str.cap) == 0) { return str.ptr; } if (errno != ERANGE) { set_error (errno, "getlogin_r"); free (str.ptr); return NULL; } } } int nbd_unlocked_set_tls_psk_file (struct nbd_handle *h, const char *filename) { char *new_file; new_file = strdup (filename); if (!new_file) { set_error (errno, "strdup"); return -1; } free (h->tls_psk_file); h->tls_psk_file = new_file; return 0; } #ifdef HAVE_GNUTLS static ssize_t tls_recv (struct nbd_handle *h, struct socket *sock, void *buf, size_t len) { ssize_t r; r = gnutls_record_recv (sock->u.tls.session, buf, len); if (r < 0) { if (r == GNUTLS_E_INTERRUPTED || r == GNUTLS_E_AGAIN) { errno = EAGAIN; return -1; } if (h->tls_shut_writes && (r == GNUTLS_E_PULL_ERROR || r == GNUTLS_E_PREMATURE_TERMINATION)) { /* qemu-nbd doesn't call gnutls_bye to cleanly shut down the * connection after we send NBD_CMD_DISC, instead it simply * closes the connection. On the client side we see * "gnutls_record_recv: The TLS connection was non-properly * terminated" or "gnutls_record_recv: Error in the pull * function.". * * If we see these errors after we shut down the write side * (h->tls_shut_writes), which happens after we have sent * NBD_CMD_DISC on the wire, downgrade them to a debug message. */ debug (h, "gnutls_record_recv: %s", gnutls_strerror (r)); return 0; /* EOF */ } set_error (0, "gnutls_record_recv: %s", gnutls_strerror (r)); errno = EIO; return -1; } return r; } static ssize_t tls_send (struct nbd_handle *h, struct socket *sock, const void *buf, size_t len, int flags) { ssize_t r; r = gnutls_record_send (sock->u.tls.session, buf, len); if (r < 0) { if (r == GNUTLS_E_INTERRUPTED || r == GNUTLS_E_AGAIN) { errno = EAGAIN; return -1; } set_error (0, "gnutls_record_send: %s", gnutls_strerror (r)); errno = EIO; return -1; } return r; } static bool tls_pending (struct socket *sock) { return gnutls_record_check_pending (sock->u.tls.session) > 0; } static int tls_get_fd (struct socket *sock) { return sock->u.tls.oldsock->ops->get_fd (sock->u.tls.oldsock); } static bool tls_shut_writes (struct nbd_handle *h, struct socket *sock) { int r = gnutls_bye (sock->u.tls.session, GNUTLS_SHUT_WR); if (r == GNUTLS_E_AGAIN || r == GNUTLS_E_INTERRUPTED) return false; if (r != 0) debug (h, "ignoring gnutls_bye failure: %s", gnutls_strerror (r)); h->tls_shut_writes = true; return sock->u.tls.oldsock->ops->shut_writes (h, sock->u.tls.oldsock); } /* XXX Calling gnutls_bye(GNUTLS_SHUT_RDWR) is possible, but it may send * and receive data over the wire which would require further modifications * to the state machine. So instead we abruptly drop the TLS session. */ static int tls_close (struct socket *sock) { int r; r = sock->u.tls.oldsock->ops->close (sock->u.tls.oldsock); gnutls_deinit (sock->u.tls.session); if (sock->u.tls.pskcreds) gnutls_psk_free_client_credentials (sock->u.tls.pskcreds); if (sock->u.tls.xcreds) gnutls_certificate_free_credentials (sock->u.tls.xcreds); free (sock); return r; } static struct socket_ops crypto_ops = { .recv = tls_recv, .send = tls_send, .pending = tls_pending, .get_fd = tls_get_fd, .shut_writes = tls_shut_writes, .close = tls_close, }; /* Look up the user's key in the PSK file. */ static int lookup_key (const char *pskfile, const char *username, gnutls_datum_t *key) { FILE *fp; const size_t ulen = strlen (username); size_t len = 0; ssize_t r; char *line = NULL; fp = fopen (pskfile, "re"); if (fp == NULL) { set_error (errno, "open: %s", pskfile); goto error; } while ((r = getline (&line, &len, fp)) != -1) { if (r > 0 && line[r-1] == '\n') line[--r] = '\0'; if (r > 0 && line[r-1] == '\r') line[--r] = '\0'; if (r > ulen+1 && strncmp (line, username, ulen) == 0 && line[ulen] == ':') { key->data = (unsigned char *)strdup (&line[ulen+1]); if (key->data == NULL) { set_error (errno, "strdup"); goto error; } key->size = r - ulen - 1; break; } } if (ferror (fp)) { set_error (errno, "%s: getline failed", pskfile); goto error; } if (key->data == NULL) { set_error (EINVAL, "%s: username %s was not found in PSK file", pskfile, username); goto error; } fclose (fp); free (line); return 0; error: if (fp) fclose (fp); free (line); return -1; } static gnutls_psk_client_credentials_t set_up_psk_credentials (struct nbd_handle *h, gnutls_session_t session) { int err; const char prio[] = TLS_PRIORITY ":" "+ECDHE-PSK:+DHE-PSK:+PSK"; gnutls_datum_t key = { .data = NULL }; char *username = NULL; gnutls_psk_client_credentials_t ret = NULL; err = gnutls_priority_set_direct (session, prio, NULL); if (err < 0) { set_error (0, "gnutls_priority_set_direct: %s", gnutls_strerror (err)); goto error; } username = nbd_unlocked_get_tls_username (h); if (username == NULL) goto error; if (lookup_key (h->tls_psk_file, username, &key) == -1) goto error; err = gnutls_psk_allocate_client_credentials (&ret); if (err < 0) { set_error (0, "gnutls_psk_allocate_client_credentials: %s", gnutls_strerror (err)); goto error; } err = gnutls_psk_set_client_credentials (ret, username, &key, GNUTLS_PSK_KEY_HEX); if (err < 0) { set_error (0, "gnutls_psk_set_client_credentials: %s", gnutls_strerror (err)); goto error; } err = gnutls_credentials_set (session, GNUTLS_CRD_PSK, ret); if (err < 0) { set_error (0, "gnutls_credentials_set: %s", gnutls_strerror (err)); goto error; } free (username); free (key.data); return ret; error: free (username); free (key.data); if (ret) gnutls_psk_free_client_credentials (ret); return NULL; } static int load_certificates (const char *path, gnutls_certificate_credentials_t *ret) { int err; char *cacert = NULL; char *clientcert = NULL; char *clientkey = NULL; char *cacrl = NULL; if (asprintf (&cacert, "%s/ca-cert.pem", path) == -1) { set_error (errno, "asprintf"); goto error; } /* Only ca-cert.pem must be present. */ if (access (cacert, R_OK) == -1) { free (cacert); return 0; } if (asprintf (&clientcert, "%s/client-cert.pem", path) == -1) { set_error (errno, "asprintf"); goto error; } if (asprintf (&clientkey, "%s/client-key.pem", path) == -1) { set_error (errno, "asprintf"); goto error; } if (asprintf (&cacrl, "%s/ca-crl.pem", path) == -1) { set_error (errno, "asprintf"); goto error; } err = gnutls_certificate_allocate_credentials (ret); if (err < 0) { set_error (0, "gnutls_certificate_allocate_credentials: %s", gnutls_strerror (err)); goto error; } err = gnutls_certificate_set_x509_trust_file (*ret, cacert, GNUTLS_X509_FMT_PEM); if (err < 0) { set_error (0, "gnutls_certificate_set_x509_trust_file: %s: %s", cacert, gnutls_strerror (err)); goto error; } /* Optional for client certification authentication. */ if (access (clientcert, R_OK) == 0 && access (clientkey, R_OK) == 0) { err = gnutls_certificate_set_x509_key_file (*ret, clientcert, clientkey, GNUTLS_X509_FMT_PEM); if (err < 0) { set_error (0, "gnutls_certificate_set_x509_key_file: %s, %s: %s", clientcert, clientkey, gnutls_strerror (err)); goto error; } } if (access (cacrl, R_OK) == 0) { err = gnutls_certificate_set_x509_crl_file (*ret, cacrl, GNUTLS_X509_FMT_PEM); if (err < 0) { set_error (0, "gnutls_certificate_set_x509_crl_file: %s: %s", cacrl, gnutls_strerror (err)); goto error; } } free (cacert); free (clientcert); free (clientkey); free (cacrl); return 0; error: if (*ret) gnutls_certificate_free_credentials (*ret); *ret = NULL; free (cacert); free (clientcert); free (clientkey); free (cacrl); return -1; } static gnutls_certificate_credentials_t set_up_certificate_credentials (struct nbd_handle *h, gnutls_session_t session, bool *is_error) { int err; gnutls_certificate_credentials_t ret = NULL; const char *home = getenv ("HOME"); char *path = NULL; err = gnutls_priority_set_direct (session, TLS_PRIORITY, NULL); if (err < 0) { set_error (0, "gnutls_priority_set_direct: %s", gnutls_strerror (err)); goto error; } /* Try to load the certificates from the directory. */ if (h->tls_certificates) { if (load_certificates (h->tls_certificates, &ret) == -1) goto error; if (ret) goto found_certificates; } else { if (geteuid () != 0 && home != NULL) { if (asprintf (&path, "%s/.pki/%s", home, PACKAGE_NAME) == -1) { set_error (errno, "asprintf"); goto error; } if (load_certificates (path, &ret) == -1) goto error; if (ret) goto found_certificates; free (path); if (asprintf (&path, "%s/.config/pki/%s", home, PACKAGE_NAME) == -1) { set_error (errno, "asprintf"); goto error; } if (load_certificates (path, &ret) == -1) goto error; if (ret) goto found_certificates; } else { /* geteuid () == 0 */ if (load_certificates (sysconfdir "/pki/" PACKAGE_NAME, &ret) == -1) goto error; if (ret) goto found_certificates; } } /* Not found. */ free (path); return NULL; found_certificates: err = gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, ret); if (err < 0) { set_error (0, "gnutls_credentials_set: %s", gnutls_strerror (err)); goto error; } free (path); return ret; error: gnutls_certificate_free_credentials (ret); free (path); *is_error = true; return NULL; } static gnutls_certificate_credentials_t set_up_system_CA (struct nbd_handle *h, gnutls_session_t session) { int err; gnutls_certificate_credentials_t ret = NULL; err = gnutls_priority_set_direct (session, TLS_PRIORITY, NULL); if (err < 0) { set_error (0, "gnutls_priority_set_direct: %s", gnutls_strerror (err)); return NULL; } err = gnutls_certificate_allocate_credentials (&ret); if (err < 0) { set_error (0, "gnutls_certificate_allocate_credentials: %s", gnutls_strerror (err)); return NULL; } err = gnutls_certificate_set_x509_system_trust (ret); if (err < 0) { set_error (0, "gnutls_certificate_set_x509_system_trust: %s", gnutls_strerror (err)); gnutls_certificate_free_credentials (ret); return NULL; } err = gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, ret); if (err < 0) { set_error (0, "gnutls_credentials_set: %s", gnutls_strerror (err)); gnutls_certificate_free_credentials (ret); return NULL; } return ret; } /* Called from the state machine after receiving an ACK from * NBD_OPT_STARTTLS when we want to start upgrading the connection to * TLS. Allocate and initialize the TLS session and set up the socket * ops. */ struct socket * nbd_internal_crypto_create_session (struct nbd_handle *h, struct socket *oldsock) { int err; struct socket *sock; gnutls_session_t session; gnutls_psk_client_credentials_t pskcreds = NULL; gnutls_certificate_credentials_t xcreds = NULL; unsigned init_flags; init_flags = GNUTLS_CLIENT | GNUTLS_NONBLOCK; #ifdef GNUTLS_NO_SIGNAL init_flags |= GNUTLS_NO_SIGNAL; #endif err = gnutls_init (&session, init_flags); if (err < 0) { set_error (errno, "gnutls_init: %s", gnutls_strerror (err)); return NULL; } /* If we have the server name, pass SNI. */ if (h->hostname) { err = gnutls_server_name_set (session, GNUTLS_NAME_DNS, h->hostname, strlen (h->hostname)); if (err < 0) { set_error (errno, "gnutls_server_name_set: %s", gnutls_strerror (err)); gnutls_deinit (session); return NULL; } } if (h->tls_psk_file) { pskcreds = set_up_psk_credentials (h, session); if (pskcreds == NULL) { gnutls_deinit (session); return NULL; } } else { bool is_error = false; xcreds = set_up_certificate_credentials (h, session, &is_error); if (xcreds == NULL) { if (!is_error) { /* Fallback case: use system CA. */ xcreds = set_up_system_CA (h, session); if (xcreds == NULL) is_error = true; } } if (is_error) { gnutls_deinit (session); return NULL; } if (h->tls_verify_peer) gnutls_session_set_verify_cert (session, h->hostname, 0); } /* Wrap the underlying socket with GnuTLS. */ gnutls_transport_set_int (session, oldsock->ops->get_fd (oldsock)); gnutls_handshake_set_timeout (session, GNUTLS_DEFAULT_HANDSHAKE_TIMEOUT); sock = malloc (sizeof *sock); if (sock == NULL) { set_error (errno, "malloc"); gnutls_deinit (session); if (pskcreds) gnutls_psk_free_client_credentials (pskcreds); if (xcreds) gnutls_certificate_free_credentials (xcreds); return NULL; } sock->u.tls.session = session; sock->u.tls.pskcreds = pskcreds; sock->u.tls.xcreds = xcreds; sock->u.tls.oldsock = oldsock; sock->ops = &crypto_ops; return sock; } /* Return the read/write direction. */ bool nbd_internal_crypto_is_reading (struct nbd_handle *h) { assert (h->sock->u.tls.session); return gnutls_record_get_direction (h->sock->u.tls.session) == 0; } /* Continue with the TLS handshake. Returns 0 if the handshake * completed successfully, 1 if the handshake is continuing, and -1 if * there was a GnuTLS error. */ int nbd_internal_crypto_handshake (struct nbd_handle *h) { int err; gnutls_handshake_description_t in, out; const gnutls_session_t session = h->sock->u.tls.session; assert (session); err = gnutls_handshake (session); if (err == 0) return 0; if (!gnutls_error_is_fatal (err)) return 1; /* Get some additional debug information about where in the * handshake protocol it failed. You have to look up these codes in * . */ in = gnutls_handshake_get_last_in (session); out = gnutls_handshake_get_last_out (session); set_error (0, "gnutls_handshake: %s (%d/%d)", gnutls_strerror (err), (int)in, (int)out); return -1; } /* The state machine calls this when TLS has definitely been enabled * on the connection (after the handshake), and we use it to print * useful debugging information. */ void nbd_internal_crypto_debug_tls_enabled (struct nbd_handle *h) { if_debug (h) { const gnutls_session_t session = h->sock->u.tls.session; const gnutls_cipher_algorithm_t cipher = gnutls_cipher_get (session); const gnutls_kx_algorithm_t kx = gnutls_kx_get (session); const gnutls_mac_algorithm_t mac = gnutls_mac_get (session); #ifdef HAVE_GNUTLS_TRANSPORT_IS_KTLS_ENABLED const char *ktls_status; gnutls_transport_ktls_enable_flags_t ktls_enabled; #else const char *ktls_status = "disabled"; #endif #ifdef HAVE_GNUTLS_TRANSPORT_IS_KTLS_ENABLED ktls_enabled = gnutls_transport_is_ktls_enabled (session); switch (ktls_enabled) { case GNUTLS_KTLS_RECV: ktls_status = "enabled receive only"; break; case GNUTLS_KTLS_SEND: ktls_status = "enabled send only"; break; case GNUTLS_KTLS_DUPLEX: ktls_status = "enabled"; break; default: if ((int)ktls_enabled == 0) ktls_status = "disabled"; else ktls_status = "unknown"; } #endif debug (h, "connection is using TLS: " "cipher %s (%zu bits) key exchange %s mac %s (%zu bits) kTLS %s", gnutls_cipher_get_name (cipher), 8 * gnutls_cipher_get_key_size (cipher), gnutls_kx_get_name (kx), gnutls_mac_get_name (mac), 8 * gnutls_mac_get_key_size (mac), ktls_status ); } } #else /* !HAVE_GNUTLS */ /* These functions should never be called from the state machine if * !HAVE_GNUTLS. */ struct socket * nbd_internal_crypto_create_session (struct nbd_handle *h, struct socket *oldsock) { abort (); } bool nbd_internal_crypto_is_reading (struct nbd_handle *h) { abort (); } int nbd_internal_crypto_handshake (struct nbd_handle *h) { abort (); } void nbd_internal_crypto_debug_tls_enabled (struct nbd_handle *h) { abort (); } #endif /* !HAVE_GNUTLS */ libnbd-1.20.3/lib/debug.c0000644000175000017500000000465414616437241010531 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include "internal.h" int nbd_unlocked_set_debug (struct nbd_handle *h, bool fl) { h->debug = fl; return 0; } /* NB: may_set_error = false. */ int nbd_unlocked_get_debug (struct nbd_handle *h) { return h->debug; } int nbd_unlocked_clear_debug_callback (struct nbd_handle *h) { FREE_CALLBACK (h->debug_callback); return 0; } int nbd_unlocked_set_debug_callback (struct nbd_handle *h, nbd_debug_callback *debug_callback) { /* This can't fail at the moment - see implementation above. */ nbd_unlocked_clear_debug_callback (h); h->debug_callback = *debug_callback; SET_CALLBACK_TO_NULL (*debug_callback); return 0; } /* Note this preserves the value of errno, making it safe to use in * all situations. */ void nbd_internal_debug (struct nbd_handle *h, const char *context, const char *fs, ...) { int err, r; va_list args; char *msg = NULL; /* The debug() wrapper checks this, but check it again in case * something calls nbd_internal_debug directly. */ if (!h->debug) return; err = errno; if (context == NULL) context = nbd_internal_get_error_context (); va_start (args, fs); r = vasprintf (&msg, fs, args); va_end (args); if (r == -1) goto out; if (CALLBACK_IS_NOT_NULL (h->debug_callback)) /* ignore return value */ CALL_CALLBACK (h->debug_callback, context, msg); else fprintf (stderr, "libnbd: debug: %s: %s: %s\n", h->hname, context ? : "unknown", msg); out: free (msg); errno = err; return; } libnbd-1.20.3/lib/disconnect.c0000644000175000017500000000526614616437241011574 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include "internal.h" int nbd_unlocked_shutdown (struct nbd_handle *h, uint32_t flags) { /* If we are still in opt mode, end it gracefully. */ if (nbd_internal_is_state_negotiating (get_next_state (h))) { if (nbd_unlocked_aio_opt_abort (h) == -1) return -1; goto wait; } /* If ABANDON_PENDING, abort any commands that have not yet had any * bytes sent to the server, so NBD_CMD_DISC becomes next in line. */ if (flags & LIBNBD_SHUTDOWN_ABANDON_PENDING) { struct command **cmd = &h->cmds_to_issue; if (!nbd_internal_is_state_ready (get_next_state (h))) { assert (*cmd); h->cmds_to_issue_tail = *cmd; cmd = &(*cmd)->next; } nbd_internal_abort_commands (h, cmd); } if (!h->disconnect_request && (nbd_internal_is_state_ready (get_next_state (h)) || nbd_internal_is_state_processing (get_next_state (h)))) { if (nbd_unlocked_aio_disconnect (h, 0) == -1) return -1; } wait: while (!nbd_internal_is_state_closed (get_next_state (h)) && !nbd_internal_is_state_dead (get_next_state (h))) { if (nbd_unlocked_poll (h, -1) == -1) return -1; } return 0; } int nbd_unlocked_aio_disconnect (struct nbd_handle *h, uint32_t flags) { int64_t id; id = nbd_internal_command_common (h, flags, NBD_CMD_DISC, 0, 0, 0, NULL, NULL); if (id == -1) return -1; h->disconnect_request = true; /* As the server does not reply to this command, it is left * in-flight until the cleanup performed when moving to CLOSED or * DEAD. We don't return a handle to the user, and thus also * special case things so that the user cannot request the status of * this command during aio_[peek_]command_completed. */ return 0; } libnbd-1.20.3/lib/errors.c0000644000175000017500000001067014525371754010757 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include "internal.h" struct last_error { const char *context; /* Current function context. */ char *error; /* Error message string. */ int errnum; /* errno value (0 if not available). */ }; /* Thread-local storage of the last error. */ static pthread_key_t errors_key; static void free_errors_key (void *vp) LIBNBD_ATTRIBUTE_NONNULL (1); /* Create the thread-local key when the library is loaded. */ static void errors_key_create (void) __attribute__ ((constructor)); static void errors_key_create (void) { int err; err = pthread_key_create (&errors_key, free_errors_key); if (err != 0) { fprintf (stderr, "%s: %s: %s\n", "libnbd", "pthread_key_create", strerror (err)); abort (); } } /* Destroy the thread-local key when the library is unloaded. */ static void errors_key_destroy (void) __attribute__ ((destructor)); static void errors_key_destroy (void) { struct last_error *last_error = pthread_getspecific (errors_key); /* "No destructor functions shall be invoked by * pthread_key_delete(). Any destructor function that may have been * associated with key shall no longer be called upon thread exit." */ if (last_error != NULL) { free (last_error->error); free (last_error); } /* We could do this, but that causes a race condition described here: * https://listman.redhat.com/archives/libguestfs/2023-March/031002.html */ //pthread_key_delete (errors_key); } /* This is called when a thread exits, to free the thread-local data * for that thread. Note that vp != NULL, guaranteed by pthread. */ static void free_errors_key (void *vp) { struct last_error *last_error = vp; free (last_error->error); free (last_error); } static struct last_error * allocate_last_error_on_demand (void) { struct last_error *last_error = pthread_getspecific (errors_key); if (!last_error) { last_error = calloc (1, sizeof *last_error); if (last_error) { int err = pthread_setspecific (errors_key, last_error); if (err != 0) { /* This is not supposed to happen (XXX). */ fprintf (stderr, "%s: %s: %s\n", "libnbd", "pthread_setspecific", strerror (err)); } } } return last_error; } /* Called on entry to any API function that can call an error function * (see generator "may_set_error") to reset the error context. The * 'context' parameter is the name of the function. */ void nbd_internal_set_error_context (const char *context) { struct last_error *last_error = allocate_last_error_on_demand (); if (!last_error) return; last_error->context = context; } void nbd_internal_set_last_error (int errnum, char *error) { struct last_error *last_error = allocate_last_error_on_demand (); if (!last_error) { /* At least we shouldn't lose the error. */ perror ("nbd_internal_set_last_error: calloc"); fprintf (stderr, "nbd_internal_set_last_error: lost error: %s (%d)\n", error, errnum); return; } free (last_error->error); last_error->error = error; last_error->errnum = errnum; } const char * nbd_internal_get_error_context (void) { struct last_error *last_error = allocate_last_error_on_demand (); return last_error ? last_error->context : NULL; } const char * nbd_get_error (void) { struct last_error *last_error = pthread_getspecific (errors_key); if (!last_error) return NULL; return last_error->error; } int nbd_get_errno (void) { struct last_error *last_error = pthread_getspecific (errors_key); if (!last_error) return 0; return last_error->errnum; } libnbd-1.20.3/lib/flags.c0000644000175000017500000001712114616437241010530 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include "internal.h" #include "minmax.h" /* Reset connection data. Called after swapping export name, after * failed OPT_GO/OPT_INFO, or after successful OPT_STARTTLS. */ void nbd_internal_reset_size_and_flags (struct nbd_handle *h) { h->exportsize = 0; h->eflags = 0; h->block_minimum = 0; h->block_preferred = 0; h->block_maximum = 0; h->payload_maximum = 0; free (h->canonical_name); h->canonical_name = NULL; free (h->description); h->description = NULL; } /* Set the export size and eflags on the handle, validating them. * This is called from the state machine when either the newstyle or * oldstyle negotiation reaches the point that these are available. */ int nbd_internal_set_size_and_flags (struct nbd_handle *h, uint64_t exportsize, uint16_t eflags) { debug (h, "exportsize: %" PRIu64 " eflags: 0x%" PRIx16, exportsize, eflags); if (eflags == 0) { set_error (EINVAL, "handshake: invalid eflags == 0 from server"); return -1; } if (eflags & NBD_FLAG_SEND_DF && !h->structured_replies) { debug (h, "server lacks structured replies, ignoring claim of df"); eflags &= ~NBD_FLAG_SEND_DF; } if (eflags & NBD_FLAG_BLOCK_STATUS_PAYLOAD && !h->extended_headers) { debug (h, "server lacks extended headers, ignoring claim " "of block status payload"); eflags &= ~NBD_FLAG_BLOCK_STATUS_PAYLOAD; } if (eflags & NBD_FLAG_SEND_FAST_ZERO && !(eflags & NBD_FLAG_SEND_WRITE_ZEROES)) { debug (h, "server lacks write zeroes, ignoring claim of fast zero"); eflags &= ~NBD_FLAG_SEND_FAST_ZERO; } if (h->request_meta && (!h->structured_replies || h->request_meta_contexts.len == 0)) { assert (h->meta_contexts.len == 0); h->meta_valid = true; } h->exportsize = exportsize; h->eflags = eflags; return 0; } /* Set the block size constraints on the handle, validating them. * This is called from the state machine if newstyle negotiation encounters * a server advertisement. */ int nbd_internal_set_block_size (struct nbd_handle *h, uint32_t min, uint32_t pref, uint32_t max) { debug (h, "server block size constraints: min: %u preferred: %u max: %u", min, pref, max); /* NBD spec recommends: * min and pref are power of 2 * min <= MIN(pref, 64k) * pref >= 512 * max >= MIN(MAX(pref, 1M), exportsize) * max is either multiple of min or 0xffffffff * exportsize is multiple of min * At the point of this call, we don't necessarily know exportsize yet; * but we ignore server advertisement if any other constraints are wrong. */ if (!min || min > 64*1024 || min > pref || pref < 512 || pref > max) goto ignore; if ((min & (min - 1)) != 0 || (pref & (pref - 1)) != 0) goto ignore; if (max != 0xffffffffU && max % min != 0) goto ignore; h->block_minimum = min; h->block_preferred = pref; h->block_maximum = max; return 0; ignore: debug (h, "ignoring improper server size constraints"); return 0; /* Use return -1 if we want to reject such servers */ } /* Set the payload size constraint on the handle. * This is called from the state machine after all other information * about an export is available, regardless of oldstyle or newstyle. */ void nbd_internal_set_payload (struct nbd_handle *h) { /* The NBD protocol says we should not assume the server will allow * more than 32M payload if it did not advertise anything. If it * advertised more than 64M, we still cap at the maximum buffer size * we are willing to allocate as a client; if it advertised smaller * than 1M (presumably because the export itself was small), the NBD * protocol says we can still send payloads that large. */ if (h->block_maximum) h->payload_maximum = MIN (MAX_REQUEST_SIZE, MAX (1024 * 1024, h->block_maximum)); else h->payload_maximum = 32 * 1024 * 1024; } static int get_flag (struct nbd_handle *h, uint16_t flag) { if (h->eflags == 0) { set_error (EINVAL, "server has not returned export flags, " "you need to connect to the server first"); return -1; } return (h->eflags & flag) != 0; } int nbd_unlocked_is_read_only (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_READ_ONLY); } int nbd_unlocked_can_flush (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_SEND_FLUSH); } int nbd_unlocked_can_fua (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_SEND_FUA); } int nbd_unlocked_is_rotational (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_ROTATIONAL); } int nbd_unlocked_can_trim (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_SEND_TRIM); } int nbd_unlocked_can_zero (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_SEND_WRITE_ZEROES); } int nbd_unlocked_can_fast_zero (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_SEND_FAST_ZERO); } int nbd_unlocked_can_df (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_SEND_DF); } int nbd_unlocked_can_multi_conn (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_CAN_MULTI_CONN); } int nbd_unlocked_can_cache (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_SEND_CACHE); } int nbd_unlocked_can_block_status_payload (struct nbd_handle *h) { return get_flag (h, NBD_FLAG_BLOCK_STATUS_PAYLOAD); } int nbd_unlocked_can_meta_context (struct nbd_handle *h, const char *name) { size_t i; if (h->request_meta_contexts.len && !h->meta_valid) { set_error (EINVAL, "need a successful server meta context request first"); return -1; } for (i = 0; i < h->meta_contexts.len; ++i) if (strcmp (h->meta_contexts.ptr[i].name, name) == 0) return 1; return 0; } int64_t nbd_unlocked_get_size (struct nbd_handle *h) { /* exportsize is only valid when we've read both the eflags and the * exportsize. See comment in lib/internal.h. */ if (h->eflags == 0) { set_error (EINVAL, "server has not returned export size, " "you need to connect to the server first"); return -1; } if (h->exportsize > INT64_MAX) { set_error (EOVERFLOW, "server claims size %" PRIu64 " which does not fit in signed result", h->exportsize); return -1; } return h->exportsize; } int64_t nbd_unlocked_get_block_size (struct nbd_handle *h, int type) { if (h->eflags == 0) { set_error (EINVAL, "server has not returned export flags, " "you need to connect to the server first"); return -1; } switch (type) { case LIBNBD_SIZE_MINIMUM: return h->block_minimum; case LIBNBD_SIZE_PREFERRED: return h->block_preferred; case LIBNBD_SIZE_MAXIMUM: return h->block_maximum; case LIBNBD_SIZE_PAYLOAD: return h->payload_maximum; } return 0; } libnbd-1.20.3/lib/handle.c0000644000175000017500000003300614616437241010667 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include "ascii-ctype.h" #include "internal.h" static void free_cmd_list (struct command *list) { struct command *cmd, *cmd_next; for (cmd = list; cmd != NULL; cmd = cmd_next) { int error = cmd->error ? : ENOTCONN; cmd_next = cmd->next; CALL_CALLBACK (cmd->cb.completion, &error); nbd_internal_retire_and_free_command (cmd); } } struct nbd_handle * nbd_create (void) { static _Atomic int hnums = 1; struct nbd_handle *h; const char *s; nbd_internal_set_error_context ("nbd_create"); h = calloc (1, sizeof *h); if (h == NULL) { set_error (errno, "calloc"); goto error1; } h->magic = NBD_HANDLE_MAGIC; if (asprintf (&h->hname, "nbd%d", hnums++) == -1) { set_error (errno, "asprintf"); goto error1; } h->unique = 1; h->tls_verify_peer = true; h->request_eh = true; h->request_sr = true; h->request_meta = true; h->request_block_size = true; h->pread_initialize = true; h->uri_allow_transports = LIBNBD_ALLOW_TRANSPORT_MASK; h->uri_allow_tls = LIBNBD_TLS_ALLOW; h->uri_allow_local_file = false; h->gflags = LIBNBD_HANDSHAKE_FLAG_MASK; s = getenv ("LIBNBD_DEBUG"); h->debug = s && strcmp (s, "1") == 0; h->strict = LIBNBD_STRICT_MASK; h->public_state = STATE_START; h->state = STATE_START; h->pid = -1; h->export_name = strdup (""); if (h->export_name == NULL) { set_error (errno, "strdup"); goto error1; } errno = pthread_mutex_init (&h->lock, NULL); if (errno != 0) { set_error (errno, "pthread_mutex_init"); goto error1; } if (nbd_internal_run (h, cmd_create) == -1) goto error2; debug (h, "opening handle"); /*debug (h, "sizeof *h = %zu", sizeof *h);*/ return h; error2: pthread_mutex_destroy (&h->lock); error1: if (h) { free (h->export_name); free (h->hname); free (h); } return NULL; } void nbd_close (struct nbd_handle *h) { size_t i; nbd_internal_set_error_context ("nbd_close"); if (h == NULL) return; assert (h->magic == NBD_HANDLE_MAGIC); debug (h, "closing handle"); /* Free user callbacks first. */ nbd_unlocked_clear_debug_callback (h); string_vector_empty (&h->querylist); free (h->bs_raw.storage); free (h->bs_cooked.storage); nbd_internal_reset_size_and_flags (h); for (i = 0; i < h->meta_contexts.len; ++i) free (h->meta_contexts.ptr[i].name); meta_vector_reset (&h->meta_contexts); nbd_internal_free_option (h); free_cmd_list (h->cmds_to_issue); free_cmd_list (h->cmds_in_flight); free_cmd_list (h->cmds_done); string_vector_empty (&h->argv); if (h->sact_sockpath) { if (h->pid > 0) kill (h->pid, SIGTERM); unlink (h->sact_sockpath); free (h->sact_sockpath); } if (h->sact_tmpdir) { rmdir (h->sact_tmpdir); free (h->sact_tmpdir); } free (h->hostname); free (h->port); if (h->result) freeaddrinfo (h->result); if (h->sock) h->sock->ops->close (h->sock); if (h->pid > 0) waitpid (h->pid, NULL, 0); free (h->export_name); free (h->sact_name); free (h->tls_certificates); free (h->tls_username); free (h->tls_psk_file); string_vector_empty (&h->request_meta_contexts); free (h->hname); pthread_mutex_destroy (&h->lock); /* Although we are about to free the handle, set the h->magic field * to something invalid so we can catch use-after-free. */ h->magic = 0xdeaddead; free (h); } int nbd_unlocked_set_handle_name (struct nbd_handle *h, const char *handle_name) { char *new_name; new_name = strdup (handle_name); if (!new_name) { set_error (errno, "strdup"); return -1; } free (h->hname); h->hname = new_name; return 0; } char * nbd_unlocked_get_handle_name (struct nbd_handle *h) { char *copy = strdup (h->hname); if (!copy) { set_error (errno, "strdup"); return NULL; } return copy; } int nbd_unlocked_set_socket_activation_name (struct nbd_handle *h, const char *name) { size_t i, len; char *new_name; len = strlen (name); /* Setting it to empty string stores NULL in the handle. */ if (len == 0) { free (h->sact_name); h->sact_name = NULL; return 0; } /* Check the proposed name is short and alphanumeric. */ if (len > 32) { set_error (ENAMETOOLONG, "socket activation name should be " "<= 32 characters"); return -1; } for (i = 0; i < len; ++i) { if (! ascii_isalnum (name[i])) { set_error (EINVAL, "socket activation name should contain " "only alphanumeric ASCII characters"); return -1; } } new_name = strdup (name); if (!new_name) { set_error (errno, "strdup"); return -1; } free (h->sact_name); h->sact_name = new_name; return 0; } char * nbd_unlocked_get_socket_activation_name (struct nbd_handle *h) { char *copy = strdup (h->sact_name ? h->sact_name : ""); if (!copy) { set_error (errno, "strdup"); return NULL; } return copy; } uintptr_t nbd_unlocked_set_private_data (struct nbd_handle *h, uintptr_t data) { uintptr_t old_data; /* atomic_exchange? XXX */ old_data = h->private_data; h->private_data = data; return old_data; } uintptr_t nbd_unlocked_get_private_data (struct nbd_handle *h) { return h->private_data; } int nbd_unlocked_set_export_name (struct nbd_handle *h, const char *export_name) { char *new_name; if (strnlen (export_name, NBD_MAX_STRING + 1) > NBD_MAX_STRING) { set_error (ENAMETOOLONG, "export name too long for NBD protocol"); return -1; } if (strcmp (export_name, h->export_name) == 0) return 0; new_name = strdup (export_name); if (!new_name) { set_error (errno, "strdup"); return -1; } free (h->export_name); h->export_name = new_name; nbd_internal_reset_size_and_flags (h); h->meta_valid = false; return 0; } char * nbd_unlocked_get_export_name (struct nbd_handle *h) { char *copy = strdup (h->export_name); if (!copy) { set_error (errno, "strdup"); return NULL; } return copy; } int nbd_unlocked_set_request_block_size (struct nbd_handle *h, bool request) { h->request_block_size = request; return 0; } int nbd_unlocked_get_request_block_size (struct nbd_handle *h) { return h->request_block_size; } int nbd_unlocked_set_full_info (struct nbd_handle *h, bool request) { h->full_info = request; return 0; } int nbd_unlocked_get_full_info (struct nbd_handle *h) { return h->full_info; } char * nbd_unlocked_get_canonical_export_name (struct nbd_handle *h) { char *r; if (h->eflags == 0) { set_error (EINVAL, "server has not returned export flags, " "you need to connect to the server first"); return NULL; } if (h->canonical_name == NULL) { set_error (ENOTSUP, "server did not advertise a canonical name"); return NULL; } r = strdup (h->canonical_name); if (r == NULL) { set_error (errno, "strdup"); return NULL; } return r; } char * nbd_unlocked_get_export_description (struct nbd_handle *h) { char *r; if (h->eflags == 0) { set_error (EINVAL, "server has not returned export flags, " "you need to connect to the server first"); return NULL; } if (h->description == NULL) { set_error (ENOTSUP, "server did not advertise a description"); return NULL; } r = strdup (h->description); if (r == NULL) { set_error (errno, "strdup"); return NULL; } return r; } int nbd_unlocked_add_meta_context (struct nbd_handle *h, const char *name) { char *copy; if (strnlen (name, NBD_MAX_STRING + 1) > NBD_MAX_STRING) { set_error (ENAMETOOLONG, "meta context name too long for NBD protocol"); return -1; } copy = strdup (name); if (!copy) { set_error (errno, "strdup"); return -1; } if (string_vector_append (&h->request_meta_contexts, copy) == -1) { free (copy); set_error (errno, "realloc"); return -1; } return 0; } ssize_t nbd_unlocked_get_nr_meta_contexts (struct nbd_handle *h) { return h->request_meta_contexts.len; } char * nbd_unlocked_get_meta_context (struct nbd_handle *h, size_t i) { char *ret; if (i >= h->request_meta_contexts.len) { set_error (EINVAL, "meta context request out of range"); return NULL; } ret = strdup (h->request_meta_contexts.ptr[i]); if (ret == NULL) set_error (errno, "strdup"); return ret; } int nbd_unlocked_clear_meta_contexts (struct nbd_handle *h) { string_vector_empty (&h->request_meta_contexts); return 0; } int nbd_unlocked_set_request_extended_headers (struct nbd_handle *h, bool request) { h->request_eh = request; return 0; } /* NB: may_set_error = false. */ int nbd_unlocked_get_request_extended_headers (struct nbd_handle *h) { return h->request_eh; } int nbd_unlocked_get_extended_headers_negotiated (struct nbd_handle *h) { return h->extended_headers; } int nbd_unlocked_set_request_structured_replies (struct nbd_handle *h, bool request) { h->request_sr = request; return 0; } /* NB: may_set_error = false. */ int nbd_unlocked_get_request_structured_replies (struct nbd_handle *h) { return h->request_sr; } int nbd_unlocked_set_request_meta_context (struct nbd_handle *h, bool request) { h->request_meta = request; return 0; } /* NB: may_set_error = false. */ int nbd_unlocked_get_request_meta_context (struct nbd_handle *h) { return h->request_meta; } int nbd_unlocked_get_structured_replies_negotiated (struct nbd_handle *h) { return h->structured_replies; } int nbd_unlocked_set_handshake_flags (struct nbd_handle *h, uint32_t flags) { /* The generator already ensured flags was in range. */ h->gflags = flags; return 0; } /* NB: may_set_error = false. */ uint32_t nbd_unlocked_get_handshake_flags (struct nbd_handle *h) { return h->gflags; } int nbd_unlocked_set_pread_initialize (struct nbd_handle *h, bool request) { h->pread_initialize = request; return 0; } /* NB: may_set_error = false. */ int nbd_unlocked_get_pread_initialize (struct nbd_handle *h) { return h->pread_initialize; } int nbd_unlocked_set_strict_mode (struct nbd_handle *h, uint32_t flags) { h->strict = flags; return 0; } /* NB: may_set_error = false. */ uint32_t nbd_unlocked_get_strict_mode (struct nbd_handle *h) { return h->strict; } const char * nbd_unlocked_get_package_name (struct nbd_handle *h) { return PACKAGE_NAME; } const char * nbd_unlocked_get_version (struct nbd_handle *h) { return PACKAGE_VERSION; } int nbd_unlocked_kill_subprocess (struct nbd_handle *h, int signum) { if (h->pid == -1) { set_error (ESRCH, "no subprocess exists"); return -1; } assert (h->pid > 0); if (signum == 0) signum = SIGTERM; if (signum < 0) { set_error (EINVAL, "invalid signal number: %d", signum); return -1; } if (kill (h->pid, signum) == -1) { set_error (errno, "kill"); return -1; } return 0; } /* NB: is_locked = false, may_set_error = false. */ int nbd_unlocked_supports_tls (struct nbd_handle *h) { #ifdef HAVE_GNUTLS return 1; #else return 0; #endif } /* NB: is_locked = false, may_set_error = false. */ int nbd_unlocked_supports_vsock (struct nbd_handle *h) { #if HAVE_STRUCT_SOCKADDR_VM return 1; #else return 0; #endif } /* NB: is_locked = false, may_set_error = false. */ int nbd_unlocked_supports_uri (struct nbd_handle *h) { #ifdef HAVE_LIBXML2 return 1; #else return 0; #endif } const char * nbd_unlocked_get_protocol (struct nbd_handle *h) { /* I believe that if we reach the Connected or Closed permitted * states, then the state machine must have set h->protocol. So if * this assertion is hit then it indicates a bug in libnbd. */ assert (h->protocol); return h->protocol; } int nbd_unlocked_set_uri_allow_transports (struct nbd_handle *h, uint32_t mask) { h->uri_allow_transports = mask; return 0; } int nbd_unlocked_set_uri_allow_tls (struct nbd_handle *h, int tls) { h->uri_allow_tls = tls; return 0; } int nbd_unlocked_set_uri_allow_local_file (struct nbd_handle *h, bool allow) { h->uri_allow_local_file = allow; return 0; } /* NB: may_set_error = false. */ uint64_t nbd_unlocked_stats_bytes_sent (struct nbd_handle *h) { return h->bytes_sent; } /* NB: may_set_error = false. */ uint64_t nbd_unlocked_stats_chunks_sent (struct nbd_handle *h) { return h->chunks_sent; } /* NB: may_set_error = false. */ uint64_t nbd_unlocked_stats_bytes_received (struct nbd_handle *h) { return h->bytes_received; } /* NB: may_set_error = false. */ uint64_t nbd_unlocked_stats_chunks_received (struct nbd_handle *h) { return h->chunks_received; } libnbd-1.20.3/lib/internal.h0000644000175000017500000005307014616437241011260 /* nbd client library in userspace: internal definitions * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_INTERNAL_H #define LIBNBD_INTERNAL_H #ifdef HAVE_STDATOMIC_H #include #else /* Rely on ints being atomic enough on the platform. */ #define _Atomic /**/ #endif #include #include #include #include #include #include #include #include "libnbd.h" #include "nbd-protocol.h" #include "byte-swapping.h" #include "states.h" #include "string-vector.h" #include "unlocked.h" /* Define unlikely macro, but only for GCC. These are used to move * debug and error handling code out of hot paths, making the hot path * into common functions use less instruction cache. */ #if defined (__GNUC__) #define unlikely(x) __builtin_expect (!!(x), 0) #define if_debug(h) if (unlikely ((h)->debug)) #else #define unlikely(x) (x) #define if_debug(h) if ((h)->debug) #endif /* MSG_MORE is an optimization. If not present, ignore it. */ #ifndef MSG_MORE #define MSG_MORE 0 #endif /* XXX This is the same as nbdkit, but probably it should be detected * from the server (NBD_INFO_BLOCK_SIZE) or made configurable. */ #define MAX_REQUEST_SIZE (64 * 1024 * 1024) struct socket; struct command; struct meta_context { char *name; /* Name of meta context. */ uint32_t context_id; /* Context ID negotiated with the server. */ }; DEFINE_VECTOR_TYPE (meta_vector, struct meta_context); DEFINE_VECTOR_TYPE(uint32_vector, uint32_t); struct export { char *name; char *description; }; struct command_cb { union { nbd_extent_callback extent32; nbd_extent64_callback extent64; nbd_chunk_callback chunk; nbd_list_callback list; nbd_context_callback context; } fn; nbd_completion_callback completion; bool wide; }; struct nbd_handle { /* Magic value used to validate handle pointers. */ uint64_t magic; #define NBD_HANDLE_MAGIC 0xbdbd /* Unique name assigned to this handle for debug messages * (to avoid having to print actual pointers). */ char *hname; /* Lock protecting concurrent access to the handle. */ pthread_mutex_t lock; /* Private data, for the application to use. */ _Atomic uintptr_t private_data; char *export_name; /* Export name, never NULL. */ char *sact_name; /* Socket activation name, can be NULL. */ /* TLS settings. */ int tls; /* 0 = disable, 1 = enable, 2 = require */ char *tls_certificates; /* Certs dir, NULL = use default path */ bool tls_verify_peer; /* Verify the peer certificate. */ char *tls_username; /* Username, NULL = use current username */ char *tls_psk_file; /* PSK filename, NULL = no PSK */ /* Extended headers. */ bool request_eh; /* Whether to request extended headers */ bool extended_headers; /* If we negotiated NBD_OPT_EXTENDED_HEADERS */ /* Desired metadata contexts. */ bool request_sr; bool request_meta; string_vector request_meta_contexts; /* Allowed in URIs, see lib/uri.c. */ uint32_t uri_allow_transports; int uri_allow_tls; bool uri_allow_local_file; /* Option negotiation mode. */ bool opt_mode; uint8_t opt_current; /* 0 or one of NBD_OPT_* */ struct command_cb opt_cb; /* Tweak what OPT_INFO/GO requests. */ bool request_block_size; /* default true, for INFO_BLOCK_SIZE */ bool full_info; /* default false, for INFO_NAME, INFO_DESCRIPTION */ /* Sanitization for pread. */ bool pread_initialize; /* Global flags from the server. */ uint16_t gflags; /* Export size and per-export flags, received during handshake. NB: * These are *both* *only* valid if eflags != 0. This is because * all servers should set NBD_FLAG_HAS_FLAGS, so eflags should * always be != 0, and we set both fields at the same time. */ uint64_t exportsize; uint16_t eflags; /* Server block size constraints, or 0 if not advertised. */ uint32_t block_minimum; uint32_t block_preferred; uint32_t block_maximum; /* Payload cap, always non-zero, based on block_maximum when feasible */ uint32_t payload_maximum; /* Server canonical name and description, or NULL if not advertised. */ char *canonical_name; char *description; /* Flags set by the state machine to tell what protocol and whether * TLS was negotiated. */ const char *protocol; bool tls_negotiated; int64_t unique; /* Used for generating cookie numbers. */ /* Traffic statistics. */ uint64_t bytes_sent; uint64_t chunks_sent; uint64_t bytes_received; uint64_t chunks_received; /* For debugging. */ bool debug; nbd_debug_callback debug_callback; /* How strict to be. */ uint32_t strict; /* State machine. * * The actual current state is ‘state’. ‘public_state’ is updated * before we release the lock. * * Note don't access these fields directly, use the SET_NEXT_STATE * macro in generator/states* code, or the set_next_state, * get_next_state and get_public_state macros in regular code. */ _Atomic enum state public_state; enum state state; bool structured_replies; /* If we negotiated NBD_OPT_STRUCTURED_REPLY */ /* Vector of negotiated metadata contexts. */ bool meta_valid; meta_vector meta_contexts; /* The socket or a wrapper if using GnuTLS. */ struct socket *sock; /* Generic way to read into a buffer - set rbuf to point to a * buffer, rlen to the amount of data you expect, and in the state * machine call recv_into_rbuf. */ void *rbuf; size_t rlen; /* As above, but for writing using send_from_wbuf. */ const void *wbuf; size_t wlen; int wflags; /* Static buffer used for short amounts of data, such as handshake * and commands. */ union { uint64_t align_; /* Start sbuf on an 8-byte alignment where useful */ struct nbd_old_handshake old_handshake; struct nbd_new_handshake new_handshake; struct nbd_new_option option; struct { struct nbd_fixed_new_option_reply option_reply; union { struct { struct nbd_fixed_new_option_reply_server server; char str[NBD_MAX_STRING * 2 + 1]; /* name, description, NUL */ } NBD_ATTRIBUTE_PACKED server; struct nbd_fixed_new_option_reply_info_export export; struct nbd_fixed_new_option_reply_info_block_size block_size; struct { struct nbd_fixed_new_option_reply_info_name_or_desc info; char str[NBD_MAX_STRING]; } NBD_ATTRIBUTE_PACKED name_desc; struct { struct nbd_fixed_new_option_reply_meta_context context; char str[NBD_MAX_STRING]; } NBD_ATTRIBUTE_PACKED context; char err_msg[NBD_MAX_STRING]; } payload; } or; struct nbd_export_name_option_reply export_name_reply; struct { union reply_header { struct nbd_simple_reply simple; struct nbd_structured_reply structured; struct nbd_extended_reply extended; /* The wire formats share magic and cookie at the same offsets; * provide aliases for one less level of typing. */ struct { uint32_t magic; uint32_t pad_; uint64_t cookie; }; } hdr; union chunk_payload { uint64_t align_; /* Start reply.payload on an 8-byte alignment */ struct nbd_chunk_offset_data offset_data; struct nbd_chunk_offset_hole offset_hole; struct nbd_chunk_block_status_32 bs_hdr_32; struct nbd_chunk_block_status_64 bs_hdr_64; struct { struct nbd_chunk_error error; char msg[NBD_MAX_STRING]; /* Common to all error types */ uint64_t offset; /* Only used for NBD_REPLY_TYPE_ERROR_OFFSET */ } NBD_ATTRIBUTE_PACKED error; } payload; } reply; uint16_t gflags; uint32_t cflags; uint32_t len; uint16_t nrinfos; uint16_t info[3]; uint32_t nrqueries; } sbuf; /* Issuing a command must use a buffer separate from sbuf, for the * case when we interrupt a request to service a reply. */ union { struct nbd_request compact; struct nbd_request_ext extended; } req; bool in_write_payload; bool in_write_shutdown; /* When connecting, this stores the socket address. */ struct sockaddr_storage connaddr; socklen_t connaddrlen; /* When connecting to a local command, this points to the argv. A * local copy is taken to simplify callers. The PID is the PID of * the subprocess so we can wait on it when the connection is * closed. */ string_vector argv; pid_t pid; /* When using systemd socket activation, this directory and socket * must be deleted, and the pid above must be killed. */ char *sact_tmpdir; char *sact_sockpath; /* When connecting to TCP ports, these fields are used. */ char *hostname, *port; struct addrinfo hints; struct addrinfo *result, *rp; int connect_errno; /* When sending metadata contexts, this is used. */ string_vector querylist; size_t querynum; /* Chunk payload length remaining to be parsed */ size_t payload_left; /* When receiving block status, this is used. */ size_t bs_count; /* count of descriptors (not bytes or cooked entries!) */ union { char *storage; struct nbd_block_descriptor_32 *narrow; struct nbd_block_descriptor_64 *wide; } bs_raw; union { char *storage; uint32_t *narrow; /* Note that this array has 2*bs_count entries... */ nbd_extent *wide; /* ...while this is just bs_count entries. */ } bs_cooked; /* Commands which are waiting to be issued [meaning the request * packet is sent to the server]. This is used as a simple linked * list queue - commands are added to the back, and commands are * issued starting with the one on the front. When commands have * been issued they are moved to cmds_in_flight. */ struct command *cmds_to_issue; struct command *cmds_to_issue_tail; /* Commands which have been issued and are waiting for replies. * Order does not matter here, since the server can reply out-of-order. */ struct command *cmds_in_flight; /* Commands which have received replies, waiting for the main * program to acknowledge them. Maintained as a queue, with new * replies at the back, in case a client uses peek to process * replies in server order. */ struct command *cmds_done; struct command *cmds_done_tail; /* length (cmds_to_issue) + length (cmds_in_flight). */ int in_flight; /* Current command and POLLIN resumption point during a REPLY cycle */ struct command *reply_cmd; enum state reply_state; bool disconnect_request; /* True if we've queued NBD_CMD_DISC */ bool tls_shut_writes; /* Used by lib/crypto.c to track disconnect. */ }; struct socket_ops { ssize_t (*recv) (struct nbd_handle *h, struct socket *sock, void *buf, size_t len); ssize_t (*send) (struct nbd_handle *h, struct socket *sock, const void *buf, size_t len, int flags); bool (*pending) (struct socket *sock); int (*get_fd) (struct socket *sock); bool (*shut_writes) (struct nbd_handle *h, struct socket *sock); int (*close) (struct socket *sock); }; struct socket { union { int fd; struct { /* These are ‘void *’ so that we don't need to include gnutls * headers from this file. */ void *session; /* really gnutls_session_t */ void *pskcreds; /* really gnutls_psk_client_credentials_t */ void *xcreds; /* really gnutls_certificate_credentials_t */ struct socket *oldsock; } tls; } u; const struct socket_ops *ops; }; struct command { struct command *next; uint16_t flags; uint16_t type; uint64_t cookie; uint64_t offset; uint64_t count; void *data; /* Buffer for read/write, uint32_vector* for status payload */ uint32_vector *ids; /* For block status with payload */ struct command_cb cb; bool initialized; /* For read, true if getting a hole may skip memset */ uint32_t data_seen; /* For read, cumulative size of data chunks seen */ uint32_t error; /* Local errno value */ }; struct execvpe { string_vector pathnames; /* Note: "const_string_vector" is not a good type for "sh_argv" below. Even if * we reserved enough space in a "const_string_vector", * const_string_vector_append() would still not be async-signal-safe, due to * the underlying const_string_vector_insert() calling assert. */ char **sh_argv; size_t num_sh_args; }; /* Test if a callback is "null" or not, and set it to null. */ #define CALLBACK_IS_NULL(cb) ((cb).callback == NULL && (cb).free == NULL) #define CALLBACK_IS_NOT_NULL(cb) (! CALLBACK_IS_NULL ((cb))) #define SET_CALLBACK_TO_NULL(cb) ((cb).callback = NULL, (cb).free = NULL) /* Call a callback. */ #define CALL_CALLBACK(cb, ...) \ ((cb).callback != NULL ? (cb).callback ((cb).user_data, ##__VA_ARGS__) : 0) /* Free a callback. */ #define FREE_CALLBACK(cb) \ do { \ if ((cb).free != NULL) \ (cb).free ((cb).user_data); \ SET_CALLBACK_TO_NULL (cb); \ } while (0) /* aio.c */ extern void nbd_internal_retire_and_free_command (struct command *) LIBNBD_ATTRIBUTE_NONNULL (1); /* connect.c */ extern int nbd_internal_wait_until_connected (struct nbd_handle *h) LIBNBD_ATTRIBUTE_NONNULL (1); /* crypto.c */ extern struct socket * nbd_internal_crypto_create_session (struct nbd_handle *, struct socket *oldsock) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern bool nbd_internal_crypto_is_reading (struct nbd_handle *) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_internal_crypto_handshake (struct nbd_handle *) LIBNBD_ATTRIBUTE_NONNULL (1); extern void nbd_internal_crypto_debug_tls_enabled (struct nbd_handle *) LIBNBD_ATTRIBUTE_NONNULL (1); /* debug.c */ extern void nbd_internal_debug (struct nbd_handle *h, const char *context, const char *fs, ...) LIBNBD_ATTRIBUTE_NONNULL (1, 3); #define debug(h, fs, ...) \ do { \ if_debug ((h)) \ nbd_internal_debug ((h), NULL, (fs), ##__VA_ARGS__); \ } while (0) #define debug_direct(h, c, fs, ...) \ do { \ if_debug ((h)) \ nbd_internal_debug ((h), (c), (fs), ##__VA_ARGS__); \ } while (0) /* errors.c */ extern void nbd_internal_set_error_context (const char *context) LIBNBD_ATTRIBUTE_NONNULL (1); extern const char *nbd_internal_get_error_context (void); extern void nbd_internal_set_last_error (int errnum, char *error) LIBNBD_ATTRIBUTE_NONNULL (2); #define set_error(errnum, fs, ...) \ do { \ int _e = (errnum); \ const char *_context = \ nbd_internal_get_error_context () ? : "unknown"; \ char *_errp; \ int _r; \ if (_e == 0) \ _r = asprintf (&_errp, "%s: " fs, _context, ##__VA_ARGS__); \ else \ _r = asprintf (&_errp, "%s: " fs ": %s", \ _context, ##__VA_ARGS__, strerror (_e)); \ if (_r >= 0) \ nbd_internal_set_last_error (_e, _errp); \ else \ nbd_internal_set_last_error (_e, fs /* best effort */); \ } while (0) /* flags.c */ extern void nbd_internal_reset_size_and_flags (struct nbd_handle *h) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_internal_set_size_and_flags (struct nbd_handle *h, uint64_t exportsize, uint16_t eflags) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_internal_set_block_size (struct nbd_handle *h, uint32_t min, uint32_t pref, uint32_t max) LIBNBD_ATTRIBUTE_NONNULL (1); extern void nbd_internal_set_payload (struct nbd_handle *h) LIBNBD_ATTRIBUTE_NONNULL (1); /* is-state.c */ extern bool nbd_internal_is_state_created (enum state state); extern bool nbd_internal_is_state_connecting (enum state state); extern bool nbd_internal_is_state_negotiating (enum state state); extern bool nbd_internal_is_state_ready (enum state state); extern bool nbd_internal_is_state_processing (enum state state); extern bool nbd_internal_is_state_dead (enum state state); extern bool nbd_internal_is_state_closed (enum state state); /* opt.c */ extern void nbd_internal_free_option (struct nbd_handle *h) LIBNBD_ATTRIBUTE_NONNULL (1); /* protocol.c */ extern int nbd_internal_errno_of_nbd_error (uint32_t error); extern const char *nbd_internal_name_of_nbd_cmd (uint16_t type); /* rw.c */ extern int64_t nbd_internal_command_common (struct nbd_handle *h, uint16_t flags, uint16_t type, uint64_t offset, uint64_t count, int count_err, void *data, struct command_cb *cb) LIBNBD_ATTRIBUTE_NONNULL (1); /* socket.c */ struct socket *nbd_internal_socket_create (int fd); /* states.c */ extern void nbd_internal_abort_commands (struct nbd_handle *h, struct command **list) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_internal_run (struct nbd_handle *h, enum external_event ev) LIBNBD_ATTRIBUTE_NONNULL (1); extern const char *nbd_internal_state_short_string (enum state state); extern enum state_group nbd_internal_state_group (enum state state); extern enum state_group nbd_internal_state_group_parent (enum state_group group); extern int nbd_internal_aio_get_direction (enum state state); #define set_next_state(h,next_state) ((h)->state) = (next_state) #define get_next_state(h) ((h)->state) #define get_public_state(h) ((h)->public_state) /* utils.c */ extern void nbd_internal_hexdump (const void *data, size_t len, FILE *fp) LIBNBD_ATTRIBUTE_NONNULL (1, 3); extern int nbd_internal_copy_string_list (string_vector *v, char **in) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_internal_set_argv (struct nbd_handle *h, char **argv) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_internal_set_querylist (struct nbd_handle *h, char **queries) LIBNBD_ATTRIBUTE_NONNULL (1); extern const char *nbd_internal_fork_safe_itoa (long v, char *buf, size_t len) LIBNBD_ATTRIBUTE_NONNULL (2); extern void nbd_internal_fork_safe_perror (const char *s) LIBNBD_ATTRIBUTE_NONNULL (1); extern char *nbd_internal_printable_buffer (const void *buf, size_t count) LIBNBD_ATTRIBUTE_NONNULL (1); extern char *nbd_internal_printable_string (const char *str) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (free) LIBNBD_ATTRIBUTE_NONNULL (1); extern char *nbd_internal_printable_string_list (char **list) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (free); /* These are wrappers around socket(2) and socketpair(2). They * always set SOCK_CLOEXEC. nbd_internal_socket can set SOCK_NONBLOCK * according to the nonblock parameter. */ extern int nbd_internal_socket (int domain, int type, int protocol, bool nonblock); extern int nbd_internal_socketpair (int domain, int type, int protocol, int *fds) LIBNBD_ATTRIBUTE_NONNULL (4); extern void nbd_internal_fork_safe_assert (int result, const char *file, long line, const char *func, const char *assertion) LIBNBD_ATTRIBUTE_NONNULL (2, 4, 5); #ifdef NDEBUG #define NBD_INTERNAL_FORK_SAFE_ASSERT(expression) ((void)0) #else #define NBD_INTERNAL_FORK_SAFE_ASSERT(expression) \ (nbd_internal_fork_safe_assert ((expression) != 0, __FILE__, __LINE__, \ __func__, #expression)) #endif extern int nbd_internal_execvpe_init (struct execvpe *ctx, const char *file, size_t num_args) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern void nbd_internal_execvpe_uninit (struct execvpe *ctx) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_internal_fork_safe_execvpe (struct execvpe *ctx, const string_vector *argv, char * const *envp) LIBNBD_ATTRIBUTE_NONNULL (1, 2, 3); #endif /* LIBNBD_INTERNAL_H */ libnbd-1.20.3/lib/is-state.c0000644000175000017500000000727614525371754011204 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include "internal.h" /* Internal functions to test state or groups of states. */ bool nbd_internal_is_state_created (enum state state) { return state == STATE_START; } static int is_connecting_group (enum state_group group) { switch (group) { case GROUP_TOP: return 0; case GROUP_CONNECT: case GROUP_CONNECT_TCP: case GROUP_CONNECT_COMMAND: case GROUP_MAGIC: case GROUP_OLDSTYLE: case GROUP_NEWSTYLE: return 1; default: return is_connecting_group (nbd_internal_state_group_parent (group)); } } bool nbd_internal_is_state_connecting (enum state state) { enum state_group group = nbd_internal_state_group (state); return is_connecting_group (group); } bool nbd_internal_is_state_negotiating (enum state state) { return state == STATE_NEGOTIATING; } bool nbd_internal_is_state_ready (enum state state) { return state == STATE_READY; } static int is_processing_group (enum state_group group) { switch (group) { case GROUP_TOP: return 0; case GROUP_ISSUE_COMMAND: case GROUP_REPLY: return 1; default: return is_processing_group (nbd_internal_state_group_parent (group)); } } bool nbd_internal_is_state_processing (enum state state) { enum state_group group = nbd_internal_state_group (state); return is_processing_group (group); } bool nbd_internal_is_state_dead (enum state state) { return state == STATE_DEAD; } bool nbd_internal_is_state_closed (enum state state) { return state == STATE_CLOSED; } /* The nbd_unlocked_aio_is_* and nbd_unlocked_aio_get_direction calls are * the public APIs for reading the state of the handle. * * They all have: is_locked = false, may_set_error = false. * * They all read the public state, not the real state. Therefore you * SHOULD NOT call these functions from elsewhere in the library (use * nbd_internal_is_* and nbd_internal_aio_get_direction instead). */ int nbd_unlocked_aio_is_created (struct nbd_handle *h) { return nbd_internal_is_state_created (get_public_state (h)); } int nbd_unlocked_aio_is_connecting (struct nbd_handle *h) { return nbd_internal_is_state_connecting (get_public_state (h)); } int nbd_unlocked_aio_is_negotiating (struct nbd_handle *h) { return nbd_internal_is_state_negotiating (get_public_state (h)); } int nbd_unlocked_aio_is_ready (struct nbd_handle *h) { return nbd_internal_is_state_ready (get_public_state (h)); } int nbd_unlocked_aio_is_processing (struct nbd_handle *h) { return nbd_internal_is_state_processing (get_public_state (h)); } int nbd_unlocked_aio_is_dead (struct nbd_handle *h) { return nbd_internal_is_state_dead (get_public_state (h)); } int nbd_unlocked_aio_is_closed (struct nbd_handle *h) { return nbd_internal_is_state_closed (get_public_state (h)); } unsigned nbd_unlocked_aio_get_direction (struct nbd_handle *h) { return nbd_internal_aio_get_direction (get_public_state (h)); } libnbd-1.20.3/lib/nbd-protocol.h0000644000175000017500000003030514525371754012047 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBD_PROTOCOL_H #define NBD_PROTOCOL_H #include /* Note that all NBD fields are sent on the wire in network byte * order, so you must use beXXtoh or htobeXX when reading or writing * these structures. */ #if defined (__GNUC__) || defined (__clang__) #define NBD_ATTRIBUTE_PACKED __attribute__ ((__packed__)) #else #error "Please port to your compiler's notion of a packed struct" #endif #define NBD_MAX_STRING 4096 /* Maximum length of a string field */ /* Old-style handshake. */ struct nbd_old_handshake { uint64_t nbdmagic; /* NBD_MAGIC */ uint64_t version; /* NBD_OLD_VERSION */ uint64_t exportsize; uint16_t gflags; /* global flags */ uint16_t eflags; /* per-export flags */ char zeroes[124]; /* must be sent as zero bytes */ } NBD_ATTRIBUTE_PACKED; #define NBD_MAGIC UINT64_C (0x4e42444d41474943) /* ASCII "NBDMAGIC" */ #define NBD_OLD_VERSION UINT64_C (0x0000420281861253) /* New-style handshake. */ struct nbd_new_handshake { uint64_t nbdmagic; /* NBD_MAGIC */ uint64_t version; /* NBD_NEW_VERSION */ uint16_t gflags; /* global flags */ } NBD_ATTRIBUTE_PACKED; #define NBD_NEW_VERSION UINT64_C (0x49484156454F5054) /* ASCII "IHAVEOPT" */ /* New-style handshake option (sent by the client to us). */ struct nbd_new_option { uint64_t version; /* NBD_NEW_VERSION */ uint32_t option; /* NBD_OPT_* */ uint32_t optlen; /* option data length */ /* option data follows */ } NBD_ATTRIBUTE_PACKED; /* Newstyle handshake OPT_EXPORT_NAME reply message. * Modern clients use NBD_OPT_GO instead of this. */ struct nbd_export_name_option_reply { uint64_t exportsize; /* size of export */ uint16_t eflags; /* per-export flags */ char zeroes[124]; /* optional zeroes, unless NBD_FLAG_NO_ZEROES */ } NBD_ATTRIBUTE_PACKED; /* Fixed newstyle handshake reply message. */ struct nbd_fixed_new_option_reply { uint64_t magic; /* NBD_REP_MAGIC */ uint32_t option; /* option we are replying to */ uint32_t reply; /* NBD_REP_* */ uint32_t replylen; } NBD_ATTRIBUTE_PACKED; #define NBD_REP_MAGIC UINT64_C (0x3e889045565a9) /* Global flags. */ #define NBD_FLAG_FIXED_NEWSTYLE (1U << 0) #define NBD_FLAG_NO_ZEROES (1U << 1) /* Per-export flags. */ #define NBD_FLAG_HAS_FLAGS (1U << 0) #define NBD_FLAG_READ_ONLY (1U << 1) #define NBD_FLAG_SEND_FLUSH (1U << 2) #define NBD_FLAG_SEND_FUA (1U << 3) #define NBD_FLAG_ROTATIONAL (1U << 4) #define NBD_FLAG_SEND_TRIM (1U << 5) #define NBD_FLAG_SEND_WRITE_ZEROES (1U << 6) #define NBD_FLAG_SEND_DF (1U << 7) #define NBD_FLAG_CAN_MULTI_CONN (1U << 8) #define NBD_FLAG_SEND_CACHE (1U << 10) #define NBD_FLAG_SEND_FAST_ZERO (1U << 11) #define NBD_FLAG_BLOCK_STATUS_PAYLOAD (1U << 12) /* NBD options (new style handshake only). */ #define NBD_OPT_EXPORT_NAME 1 #define NBD_OPT_ABORT 2 #define NBD_OPT_LIST 3 #define NBD_OPT_STARTTLS 5 #define NBD_OPT_INFO 6 #define NBD_OPT_GO 7 #define NBD_OPT_STRUCTURED_REPLY 8 #define NBD_OPT_LIST_META_CONTEXT 9 #define NBD_OPT_SET_META_CONTEXT 10 #define NBD_OPT_EXTENDED_HEADERS 11 #define NBD_REP_ERR(val) (0x80000000 | (val)) #define NBD_REP_IS_ERR(val) (!!((val) & 0x80000000)) #define NBD_REP_ACK 1 #define NBD_REP_SERVER 2 #define NBD_REP_INFO 3 #define NBD_REP_META_CONTEXT 4 #define NBD_REP_ERR_UNSUP NBD_REP_ERR (1) #define NBD_REP_ERR_POLICY NBD_REP_ERR (2) #define NBD_REP_ERR_INVALID NBD_REP_ERR (3) #define NBD_REP_ERR_PLATFORM NBD_REP_ERR (4) #define NBD_REP_ERR_TLS_REQD NBD_REP_ERR (5) #define NBD_REP_ERR_UNKNOWN NBD_REP_ERR (6) #define NBD_REP_ERR_SHUTDOWN NBD_REP_ERR (7) #define NBD_REP_ERR_BLOCK_SIZE_REQD NBD_REP_ERR (8) #define NBD_REP_ERR_TOO_BIG NBD_REP_ERR (9) #define NBD_REP_ERR_EXT_HEADER_REQD NBD_REP_ERR (10) #define NBD_INFO_EXPORT 0 #define NBD_INFO_NAME 1 #define NBD_INFO_DESCRIPTION 2 #define NBD_INFO_BLOCK_SIZE 3 /* NBD_INFO_EXPORT reply (follows fixed_new_option_reply). */ struct nbd_fixed_new_option_reply_info_export { uint16_t info; /* NBD_INFO_EXPORT */ uint64_t exportsize; /* size of export */ uint16_t eflags; /* per-export flags */ } NBD_ATTRIBUTE_PACKED; /* NBD_INFO_NAME or NBD_INFO_DESCRIPTION reply (follows * fixed_new_option_reply). */ struct nbd_fixed_new_option_reply_info_name_or_desc { uint16_t info; /* NBD_INFO_NAME, NBD_INFO_DESCRIPTION */ /* followed by a string name or description */ } NBD_ATTRIBUTE_PACKED; /* NBD_INFO_BLOCK_SIZE reply (follows fixed_new_option_reply). */ struct nbd_fixed_new_option_reply_info_block_size { uint16_t info; /* NBD_INFO_BLOCK_SIZE */ uint32_t minimum; /* minimum block size */ uint32_t preferred; /* preferred block size */ uint32_t maximum; /* maximum block size */ } NBD_ATTRIBUTE_PACKED; /* NBD_REP_SERVER reply (follows fixed_new_option_reply). */ struct nbd_fixed_new_option_reply_server { uint32_t export_name_len; /* length of export name */ /* followed by a string export name and description */ } NBD_ATTRIBUTE_PACKED; /* NBD_REP_META_CONTEXT reply (follows fixed_new_option_reply). */ struct nbd_fixed_new_option_reply_meta_context { uint32_t context_id; /* metadata context ID */ /* followed by a string */ } NBD_ATTRIBUTE_PACKED; /* Compact request (client -> server). */ struct nbd_request { uint32_t magic; /* NBD_REQUEST_MAGIC. */ uint16_t flags; /* Request flags: NBD_CMD_FLAG_*. */ uint16_t type; /* Request type: NBD_CMD_*. */ uint64_t cookie; /* Opaque handle. */ uint64_t offset; /* Request offset. */ uint32_t count; /* Request length. */ } NBD_ATTRIBUTE_PACKED; /* Extended request (client -> server). */ struct nbd_request_ext { uint32_t magic; /* NBD_EXTENDED_REQUEST_MAGIC. */ uint16_t flags; /* Request flags: NBD_CMD_FLAG_*. */ uint16_t type; /* Request type: NBD_CMD_*. */ uint64_t cookie; /* Opaque handle. */ uint64_t offset; /* Request offset. */ uint64_t count; /* Request effect or payload length. */ } NBD_ATTRIBUTE_PACKED; /* Extended request payload for NBD_CMD_BLOCK_STATUS, when supported. */ struct nbd_block_status_payload { uint64_t length; /* Effective length of client request */ /* followed by array of uint32_t ids */ } NBD_ATTRIBUTE_PACKED; /* Simple reply (server -> client). */ struct nbd_simple_reply { uint32_t magic; /* NBD_SIMPLE_REPLY_MAGIC. */ uint32_t error; /* NBD_SUCCESS or one of NBD_E*. */ uint64_t cookie; /* Opaque handle. */ } NBD_ATTRIBUTE_PACKED; /* Structured reply (server -> client). */ struct nbd_structured_reply { uint32_t magic; /* NBD_STRUCTURED_REPLY_MAGIC. */ uint16_t flags; /* NBD_REPLY_FLAG_* */ uint16_t type; /* NBD_REPLY_TYPE_* */ uint64_t cookie; /* Opaque handle. */ uint32_t length; /* Length of following nbd_chunk_* payload. */ } NBD_ATTRIBUTE_PACKED; /* Extended reply (server -> client). */ struct nbd_extended_reply { uint32_t magic; /* NBD_EXTENDED_REPLY_MAGIC. */ uint16_t flags; /* NBD_REPLY_FLAG_* */ uint16_t type; /* NBD_REPLY_TYPE_* */ uint64_t cookie; /* Opaque handle. */ uint64_t offset; /* Client's offset. */ uint64_t length; /* Length of following nbd_chunk_* payload. */ } NBD_ATTRIBUTE_PACKED; struct nbd_chunk_offset_data { uint64_t offset; /* offset */ /* Followed by data. */ } NBD_ATTRIBUTE_PACKED; struct nbd_chunk_offset_hole { uint64_t offset; uint32_t length; /* Length of hole. */ } NBD_ATTRIBUTE_PACKED; struct nbd_chunk_block_status_32 { uint32_t context_id; /* metadata context ID */ /* followed by array of nbd_block_descriptor_32 extents */ } NBD_ATTRIBUTE_PACKED; struct nbd_block_descriptor_32 { uint32_t length; /* length of block */ uint32_t status_flags; /* block type (hole etc) */ } NBD_ATTRIBUTE_PACKED; struct nbd_chunk_block_status_64 { uint32_t context_id; /* metadata context ID */ uint32_t count; /* non-zero descriptor count */ /* followed by nbd_block_descriptor_64[count] extents */ } NBD_ATTRIBUTE_PACKED; struct nbd_block_descriptor_64 { uint64_t length; /* length of block */ uint64_t status_flags; /* block type (hole etc) */ } NBD_ATTRIBUTE_PACKED; struct nbd_chunk_error { uint32_t error; /* NBD_E* error number */ uint16_t len; /* Length of human readable error. */ /* Followed by human readable error string, and possibly more structure. */ } NBD_ATTRIBUTE_PACKED; #define NBD_REQUEST_MAGIC 0x25609513 #define NBD_EXTENDED_REQUEST_MAGIC 0x21e41c71 #define NBD_SIMPLE_REPLY_MAGIC 0x67446698 #define NBD_STRUCTURED_REPLY_MAGIC 0x668e33ef #define NBD_EXTENDED_REPLY_MAGIC 0x6e8a278c /* Structured reply flags. */ #define NBD_REPLY_FLAG_DONE (1U << 0) #define NBD_REPLY_TYPE_ERR(val) ((1U<<15) | (val)) #define NBD_REPLY_TYPE_IS_ERR(val) (!!((val) & (1U<<15))) /* Structured reply types. */ #define NBD_REPLY_TYPE_NONE 0 #define NBD_REPLY_TYPE_OFFSET_DATA 1 #define NBD_REPLY_TYPE_OFFSET_HOLE 2 #define NBD_REPLY_TYPE_BLOCK_STATUS 5 #define NBD_REPLY_TYPE_BLOCK_STATUS_EXT 6 #define NBD_REPLY_TYPE_ERROR NBD_REPLY_TYPE_ERR (1) #define NBD_REPLY_TYPE_ERROR_OFFSET NBD_REPLY_TYPE_ERR (2) /* NBD commands. */ #define NBD_CMD_READ 0 #define NBD_CMD_WRITE 1 #define NBD_CMD_DISC 2 /* Disconnect. */ #define NBD_CMD_FLUSH 3 #define NBD_CMD_TRIM 4 #define NBD_CMD_CACHE 5 #define NBD_CMD_WRITE_ZEROES 6 #define NBD_CMD_BLOCK_STATUS 7 #define NBD_CMD_FLAG_FUA (1U << 0) #define NBD_CMD_FLAG_NO_HOLE (1U << 1) #define NBD_CMD_FLAG_DF (1U << 2) #define NBD_CMD_FLAG_REQ_ONE (1U << 3) #define NBD_CMD_FLAG_FAST_ZERO (1U << 4) #define NBD_CMD_FLAG_PAYLOAD_LEN (1U << 5) /* NBD error codes. */ #define NBD_SUCCESS 0 #define NBD_EPERM 1 #define NBD_EIO 5 #define NBD_ENOMEM 12 #define NBD_EINVAL 22 #define NBD_ENOSPC 28 #define NBD_EOVERFLOW 75 #define NBD_ENOTSUP 95 #define NBD_ESHUTDOWN 108 #endif /* NBD_PROTOCOL_H */ libnbd-1.20.3/lib/opt.c0000644000175000017500000003672014616437241010244 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include "internal.h" static int opt_meta_context_queries (struct nbd_handle *h, uint32_t opt, char **queries, nbd_context_callback *context) LIBNBD_ATTRIBUTE_NONNULL (1, 4); static int aio_opt_meta_context_queries (struct nbd_handle *h, uint32_t opt, char **queries, nbd_context_callback *context, nbd_completion_callback *complete) LIBNBD_ATTRIBUTE_NONNULL (1, 4, 5); /* Internal function which frees an option with callback. */ void nbd_internal_free_option (struct nbd_handle *h) { if (h->opt_current == NBD_OPT_LIST) FREE_CALLBACK (h->opt_cb.fn.list); else if (h->opt_current == NBD_OPT_LIST_META_CONTEXT || h->opt_current == NBD_OPT_SET_META_CONTEXT) FREE_CALLBACK (h->opt_cb.fn.context); FREE_CALLBACK (h->opt_cb.completion); } int nbd_unlocked_set_opt_mode (struct nbd_handle *h, bool value) { h->opt_mode = value; return 0; } /* NB: may_set_error = false. */ int nbd_unlocked_get_opt_mode (struct nbd_handle *h) { return h->opt_mode; } static int wait_for_option (struct nbd_handle *h) { while (nbd_internal_is_state_connecting (get_next_state (h))) { if (nbd_unlocked_poll (h, -1) == -1) return -1; } return 0; } static int go_complete (void *opaque, int *err) { int *i = opaque; *i = *err; return 0; } /* Issue NBD_OPT_GO (or NBD_OPT_EXPORT_NAME) and wait for the reply. */ int nbd_unlocked_opt_go (struct nbd_handle *h) { int err = 0; nbd_completion_callback c = { .callback = go_complete, .user_data = &err }; int r = nbd_unlocked_aio_opt_go (h, &c); if (r == -1) return r; r = wait_for_option (h); if (r == 0 && err) { assert (nbd_internal_is_state_negotiating (get_next_state (h)) || nbd_internal_is_state_dead (get_next_state (h))); set_error (err, "server replied with error to opt_go request"); return -1; } if (r == 0) assert (nbd_internal_is_state_ready (get_next_state (h))); return r; } /* Issue NBD_OPT_INFO and wait for the reply. */ int nbd_unlocked_opt_info (struct nbd_handle *h) { int err = 0; nbd_completion_callback c = { .callback = go_complete, .user_data = &err }; int r = nbd_unlocked_aio_opt_info (h, &c); if (r == -1) return r; r = wait_for_option (h); if (r == 0 && err) { assert (nbd_internal_is_state_negotiating (get_next_state (h)) || nbd_internal_is_state_dead (get_next_state (h))); set_error (err, "server replied with error to opt_info request"); return -1; } return r; } /* Issue NBD_OPT_ABORT and wait for the state change. */ int nbd_unlocked_opt_abort (struct nbd_handle *h) { int r = nbd_unlocked_aio_opt_abort (h); if (r == -1) return r; return wait_for_option (h); } /* Issue NBD_OPT_STARTTLS and wait for the reply. */ int nbd_unlocked_opt_starttls (struct nbd_handle *h) { int err = 0; nbd_completion_callback c = { .callback = go_complete, .user_data = &err }; int r = nbd_unlocked_aio_opt_starttls (h, &c); if (r == -1) return r; r = wait_for_option (h); if (r == 0) { if (nbd_internal_is_state_negotiating (get_next_state (h))) r = err == 0; else { assert (nbd_internal_is_state_dead (get_next_state (h))); set_error (err, "failed to get response to opt_starttls request"); r = -1; } } return r; } /* Issue NBD_OPT_EXTENDED_HEADERS and wait for the reply. */ int nbd_unlocked_opt_extended_headers (struct nbd_handle *h) { int err; nbd_completion_callback c = { .callback = go_complete, .user_data = &err }; int r = nbd_unlocked_aio_opt_extended_headers (h, &c); if (r == -1) return r; r = wait_for_option (h); if (r == 0) { if (nbd_internal_is_state_negotiating (get_next_state (h))) r = err == 0; else { assert (nbd_internal_is_state_dead (get_next_state (h))); set_error (err, "failed to get response to opt_extended_headers request"); r = -1; } } return r; } /* Issue NBD_OPT_STRUCTURED_REPLY and wait for the reply. */ int nbd_unlocked_opt_structured_reply (struct nbd_handle *h) { int err = 0; nbd_completion_callback c = { .callback = go_complete, .user_data = &err }; int r = nbd_unlocked_aio_opt_structured_reply (h, &c); if (r == -1) return r; r = wait_for_option (h); if (r == 0) { if (nbd_internal_is_state_negotiating (get_next_state (h))) r = err == 0; else { assert (nbd_internal_is_state_dead (get_next_state (h))); set_error (err, "failed to get response to opt_structured_reply request"); r = -1; } } return r; } struct list_helper { int count; nbd_list_callback list; int err; }; static int list_visitor (void *opaque, const char *name, const char *description) { struct list_helper *h = opaque; if (h->count < INT_MAX) h->count++; CALL_CALLBACK (h->list, name, description); return 0; } static int list_complete (void *opaque, int *err) { struct list_helper *h = opaque; h->err = *err; FREE_CALLBACK (h->list); return 0; } /* Issue NBD_OPT_LIST and wait for the reply. */ int nbd_unlocked_opt_list (struct nbd_handle *h, nbd_list_callback *list) { struct list_helper s = { .list = *list }; nbd_list_callback l = { .callback = list_visitor, .user_data = &s }; nbd_completion_callback c = { .callback = list_complete, .user_data = &s }; if (nbd_unlocked_aio_opt_list (h, &l, &c) == -1) return -1; assert (CALLBACK_IS_NULL (l)); SET_CALLBACK_TO_NULL (*list); if (wait_for_option (h) == -1) return -1; if (s.err) { set_error (s.err, "server replied with error to list request"); return -1; } return s.count; } struct context_helper { int count; nbd_context_callback context; int err; }; static int context_visitor (void *opaque, const char *name) { struct context_helper *h = opaque; if (h->count < INT_MAX) h->count++; CALL_CALLBACK (h->context, name); return 0; } static int context_complete (void *opaque, int *err) { struct context_helper *h = opaque; h->err = *err; FREE_CALLBACK (h->context); return 0; } static int opt_meta_context_queries (struct nbd_handle *h, uint32_t opt, char **queries, nbd_context_callback *context) { struct context_helper s = { .context = *context }; nbd_context_callback l = { .callback = context_visitor, .user_data = &s }; nbd_completion_callback c = { .callback = context_complete, .user_data = &s }; if (aio_opt_meta_context_queries (h, opt, queries, &l, &c) == -1) return -1; assert (CALLBACK_IS_NULL (l)); SET_CALLBACK_TO_NULL (*context); if (wait_for_option (h) == -1) return -1; if (s.err) { set_error (s.err, "server replied with error to meta context request"); return -1; } return s.count; } /* Issue NBD_OPT_LIST_META_CONTEXT and wait for the reply. */ int nbd_unlocked_opt_list_meta_context (struct nbd_handle *h, nbd_context_callback *context) { return opt_meta_context_queries (h, NBD_OPT_LIST_META_CONTEXT, NULL, context); } /* Issue NBD_OPT_LIST_META_CONTEXT and wait for the reply. */ int nbd_unlocked_opt_list_meta_context_queries (struct nbd_handle *h, char **queries, nbd_context_callback *context) { return opt_meta_context_queries (h, NBD_OPT_LIST_META_CONTEXT, queries, context); } /* Issue NBD_OPT_SET_META_CONTEXT and wait for the reply. */ int nbd_unlocked_opt_set_meta_context (struct nbd_handle *h, nbd_context_callback *context) { return opt_meta_context_queries (h, NBD_OPT_SET_META_CONTEXT, NULL, context); } /* Issue NBD_OPT_SET_META_CONTEXT and wait for the reply. */ int nbd_unlocked_opt_set_meta_context_queries (struct nbd_handle *h, char **queries, nbd_context_callback *context) { return opt_meta_context_queries (h, NBD_OPT_SET_META_CONTEXT, queries, context); } /* Issue NBD_OPT_GO (or NBD_OPT_EXPORT_NAME) without waiting. */ int nbd_unlocked_aio_opt_go (struct nbd_handle *h, nbd_completion_callback *complete) { h->opt_current = NBD_OPT_GO; h->opt_cb.completion = *complete; SET_CALLBACK_TO_NULL (*complete); if (nbd_internal_run (h, cmd_issue) == -1) debug (h, "option queued, ignoring state machine failure"); return 0; } /* Issue NBD_OPT_INFO without waiting. */ int nbd_unlocked_aio_opt_info (struct nbd_handle *h, nbd_completion_callback *complete) { if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { set_error (ENOTSUP, "server is not using fixed newstyle protocol"); return -1; } h->opt_current = NBD_OPT_INFO; h->opt_cb.completion = *complete; SET_CALLBACK_TO_NULL (*complete); if (nbd_internal_run (h, cmd_issue) == -1) debug (h, "option queued, ignoring state machine failure"); return 0; } /* Issue NBD_OPT_ABORT without waiting. */ int nbd_unlocked_aio_opt_abort (struct nbd_handle *h) { h->opt_current = NBD_OPT_ABORT; if (nbd_internal_run (h, cmd_issue) == -1) debug (h, "option queued, ignoring state machine failure"); return 0; } /* Issue NBD_OPT_STARTTLS without waiting. */ int nbd_unlocked_aio_opt_starttls (struct nbd_handle *h, nbd_completion_callback *complete) { if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { set_error (ENOTSUP, "server is not using fixed newstyle protocol"); return -1; } #ifndef HAVE_GNUTLS set_error (ENOTSUP, "libnbd was compiled without TLS support"); return -1; #else h->opt_current = NBD_OPT_STARTTLS; h->opt_cb.completion = *complete; SET_CALLBACK_TO_NULL (*complete); if (nbd_internal_run (h, cmd_issue) == -1) debug (h, "option queued, ignoring state machine failure"); return 0; #endif } /* Issue NBD_OPT_EXTENDED_HEADERS without waiting. */ int nbd_unlocked_aio_opt_extended_headers (struct nbd_handle *h, nbd_completion_callback *complete) { if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { set_error (ENOTSUP, "server is not using fixed newstyle protocol"); return -1; } h->opt_current = NBD_OPT_EXTENDED_HEADERS; h->opt_cb.completion = *complete; SET_CALLBACK_TO_NULL (*complete); if (nbd_internal_run (h, cmd_issue) == -1) debug (h, "option queued, ignoring state machine failure"); return 0; } /* Issue NBD_OPT_STRUCTURED_REPLY without waiting. */ int nbd_unlocked_aio_opt_structured_reply (struct nbd_handle *h, nbd_completion_callback *complete) { if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { set_error (ENOTSUP, "server is not using fixed newstyle protocol"); return -1; } h->opt_current = NBD_OPT_STRUCTURED_REPLY; h->opt_cb.completion = *complete; SET_CALLBACK_TO_NULL (*complete); if (nbd_internal_run (h, cmd_issue) == -1) debug (h, "option queued, ignoring state machine failure"); return 0; } /* Issue NBD_OPT_LIST without waiting. */ int nbd_unlocked_aio_opt_list (struct nbd_handle *h, nbd_list_callback *list, nbd_completion_callback *complete) { if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { set_error (ENOTSUP, "server is not using fixed newstyle protocol"); return -1; } assert (CALLBACK_IS_NULL (h->opt_cb.fn.list)); h->opt_cb.fn.list = *list; SET_CALLBACK_TO_NULL (*list); h->opt_cb.completion = *complete; SET_CALLBACK_TO_NULL (*complete); h->opt_current = NBD_OPT_LIST; if (nbd_internal_run (h, cmd_issue) == -1) debug (h, "option queued, ignoring state machine failure"); return 0; } static int aio_opt_meta_context_queries (struct nbd_handle *h, uint32_t opt, char **queries, nbd_context_callback *context, nbd_completion_callback *complete) { if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { set_error (ENOTSUP, "server is not using fixed newstyle protocol"); return -1; } if (nbd_internal_set_querylist (h, queries) == -1) return -1; assert (CALLBACK_IS_NULL (h->opt_cb.fn.context)); h->opt_cb.fn.context = *context; SET_CALLBACK_TO_NULL (*context); h->opt_cb.completion = *complete; SET_CALLBACK_TO_NULL (*complete); h->opt_current = opt; if (nbd_internal_run (h, cmd_issue) == -1) debug (h, "option queued, ignoring state machine failure"); return 0; } /* Issue NBD_OPT_LIST_META_CONTEXT without waiting. */ int nbd_unlocked_aio_opt_list_meta_context (struct nbd_handle *h, nbd_context_callback *context, nbd_completion_callback *complete) { return aio_opt_meta_context_queries (h, NBD_OPT_LIST_META_CONTEXT, NULL, context, complete); } /* Issue NBD_OPT_LIST_META_CONTEXT without waiting. */ int nbd_unlocked_aio_opt_list_meta_context_queries (struct nbd_handle *h, char **queries, nbd_context_callback *context, nbd_completion_callback *compl) { return aio_opt_meta_context_queries (h, NBD_OPT_LIST_META_CONTEXT, queries, context, compl); } /* Issue NBD_OPT_SET_META_CONTEXT without waiting. */ int nbd_unlocked_aio_opt_set_meta_context (struct nbd_handle *h, nbd_context_callback *context, nbd_completion_callback *complete) { return aio_opt_meta_context_queries (h, NBD_OPT_SET_META_CONTEXT, NULL, context, complete); } /* Issue NBD_OPT_SET_META_CONTEXT without waiting. */ int nbd_unlocked_aio_opt_set_meta_context_queries (struct nbd_handle *h, char **queries, nbd_context_callback *context, nbd_completion_callback *compl) { return aio_opt_meta_context_queries (h, NBD_OPT_SET_META_CONTEXT, queries, context, compl); } libnbd-1.20.3/lib/poll.c0000644000175000017500000000630414525371754010410 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include "internal.h" /* A simple main loop implementation using poll(2). */ static int do_poll (struct nbd_handle *h, int extra_fd, int timeout) { struct pollfd fds[2]; int r; /* fd might be negative, and poll will ignore it. */ fds[0].fd = nbd_unlocked_aio_get_fd (h); fds[1].fd = extra_fd; fds[1].events = POLLIN; fds[1].revents = 0; switch (nbd_internal_aio_get_direction (get_next_state (h))) { case LIBNBD_AIO_DIRECTION_READ: fds[0].events = POLLIN; break; case LIBNBD_AIO_DIRECTION_WRITE: fds[0].events = POLLOUT; break; case LIBNBD_AIO_DIRECTION_BOTH: fds[0].events = POLLIN|POLLOUT; break; default: set_error (EINVAL, "nothing to poll for in state %s", nbd_internal_state_short_string (get_next_state (h))); return -1; } fds[0].revents = 0; debug (h, "poll start: events=%x", fds[0].events); /* Note that it's not safe to release the handle lock here, as it * would allow other threads to close file descriptors which we have * passed to poll. */ do { r = poll (fds, 2, timeout); debug (h, "poll end: r=%d revents=%x", r, fds[0].revents); } while (r == -1 && errno == EINTR); if (r == -1) { set_error (errno, "poll"); return -1; } if (r == 0) return 0; /* POLLIN and POLLOUT might both be set. However we shouldn't call * both nbd_aio_notify_read and nbd_aio_notify_write at this time * since the first might change the handle state, making the second * notification invalid. Nothing bad happens by ignoring one of the * notifications since if it's still valid it will be picked up by a * subsequent poll. Prefer notifying on read, since the reply is * for a command older than what we are trying to write. */ r = 0; if ((fds[0].revents & (POLLIN | POLLHUP)) != 0) r = nbd_unlocked_aio_notify_read (h); else if ((fds[0].revents & POLLOUT) != 0) r = nbd_unlocked_aio_notify_write (h); else if ((fds[0].revents & (POLLERR | POLLNVAL)) != 0) { set_error (ENOTCONN, "server closed socket unexpectedly"); return -1; } if (r == -1) return -1; return 1; } int nbd_unlocked_poll (struct nbd_handle *h, int timeout) { return do_poll (h, -1, timeout); } int nbd_unlocked_poll2 (struct nbd_handle *h, int fd, int timeout) { return do_poll (h, fd, timeout); } libnbd-1.20.3/lib/protocol.c0000644000175000017500000000362514616437241011301 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include "internal.h" int nbd_internal_errno_of_nbd_error (uint32_t error) { switch (error) { case NBD_SUCCESS: return 0; case NBD_EPERM: return EPERM; case NBD_EIO: return EIO; case NBD_ENOMEM: return ENOMEM; case NBD_EINVAL: return EINVAL; case NBD_ENOSPC: return ENOSPC; case NBD_EOVERFLOW: return EOVERFLOW; case NBD_ENOTSUP: return ENOTSUP; case NBD_ESHUTDOWN: return ESHUTDOWN; default: return EINVAL; } } /* XXX In nbdkit this function is generated from the nbd-protocol.h * header file. We should unify this across the two programs. */ const char * nbd_internal_name_of_nbd_cmd (uint16_t type) { switch (type) { case NBD_CMD_READ: return "read"; case NBD_CMD_WRITE: return "write"; case NBD_CMD_DISC: return "disconnect"; case NBD_CMD_FLUSH: return "flush"; case NBD_CMD_TRIM: return "trim"; case NBD_CMD_CACHE: return "cache"; case NBD_CMD_WRITE_ZEROES: return "write-zeroes"; case NBD_CMD_BLOCK_STATUS: return "block-status"; default: return "UNKNOWN!"; } } libnbd-1.20.3/lib/rw.c0000644000175000017500000005240614525371754010076 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include "internal.h" static int wait_for_command (struct nbd_handle *h, int64_t cookie) { int r; while ((r = nbd_unlocked_aio_command_completed (h, cookie)) == 0) { if (nbd_unlocked_poll (h, -1) == -1) return -1; } return r == -1 ? -1 : 0; } /* Issue a read command and wait for the reply. */ int nbd_unlocked_pread (struct nbd_handle *h, void *buf, size_t count, uint64_t offset, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_pread (h, buf, count, offset, &c, flags); if (cookie == -1) return -1; return wait_for_command (h, cookie); } /* Issue a read command with callbacks and wait for the reply. */ int nbd_unlocked_pread_structured (struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback *chunk, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_pread_structured (h, buf, count, offset, chunk, &c, flags); if (cookie == -1) return -1; assert (CALLBACK_IS_NULL (*chunk)); return wait_for_command (h, cookie); } /* Issue a write command and wait for the reply. */ int nbd_unlocked_pwrite (struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_pwrite (h, buf, count, offset, &c, flags); if (cookie == -1) return -1; return wait_for_command (h, cookie); } /* Issue a flush command and wait for the reply. */ int nbd_unlocked_flush (struct nbd_handle *h, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_flush (h, &c, flags); if (cookie == -1) return -1; return wait_for_command (h, cookie); } /* Issue a trim command and wait for the reply. */ int nbd_unlocked_trim (struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_trim (h, count, offset, &c, flags); if (cookie == -1) return -1; return wait_for_command (h, cookie); } /* Issue a cache command and wait for the reply. */ int nbd_unlocked_cache (struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_cache (h, count, offset, &c, flags); if (cookie == -1) return -1; return wait_for_command (h, cookie); } /* Issue a zero command and wait for the reply. */ int nbd_unlocked_zero (struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_zero (h, count, offset, &c, flags); if (cookie == -1) return -1; return wait_for_command (h, cookie); } /* Issue a block status command and wait for the reply, 32-bit callback. */ int nbd_unlocked_block_status (struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback *extent, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_block_status (h, count, offset, extent, &c, flags); if (cookie == -1) return -1; assert (CALLBACK_IS_NULL (*extent)); return wait_for_command (h, cookie); } /* Issue a block status command and wait for the reply, 64-bit callback. */ int nbd_unlocked_block_status_64 (struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback *extent64, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_block_status_64 (h, count, offset, extent64, &c, flags); if (cookie == -1) return -1; assert (CALLBACK_IS_NULL (*extent64)); return wait_for_command (h, cookie); } /* Issue a filtered block status command and wait for the reply. */ int nbd_unlocked_block_status_filter (struct nbd_handle *h, uint64_t count, uint64_t offset, char **filter, nbd_extent64_callback *extent64, uint32_t flags) { int64_t cookie; nbd_completion_callback c = NBD_NULL_COMPLETION; cookie = nbd_unlocked_aio_block_status_filter (h, count, offset, filter, extent64, &c, flags); if (cookie == -1) return -1; assert (CALLBACK_IS_NULL (*extent64)); return wait_for_command (h, cookie); } /* count_err represents the errno to return if bounds check fail */ int64_t nbd_internal_command_common (struct nbd_handle *h, uint16_t flags, uint16_t type, uint64_t offset, uint64_t count, int count_err, void *data, struct command_cb *cb) { struct command *cmd; uint32_vector *ids = NULL; if (h->disconnect_request) { set_error (EINVAL, "cannot request more commands after NBD_CMD_DISC"); goto err; } if (h->in_flight == INT_MAX) { set_error (ENOMEM, "too many commands already in flight"); goto err; } if (count_err) { if ((h->strict & LIBNBD_STRICT_ZERO_SIZE) && count == 0) { set_error (EINVAL, "count cannot be 0"); goto err; } if ((h->strict & LIBNBD_STRICT_BOUNDS) && (offset > h->exportsize || count > h->exportsize - offset)) { set_error (count_err, "request out of bounds"); goto err; } if (h->block_minimum && (h->strict & LIBNBD_STRICT_ALIGN) && (offset | count) & (h->block_minimum - 1)) { set_error (EINVAL, "request is unaligned"); goto err; } } switch (type) { /* Commands which send or receive data are limited to MAX_REQUEST_SIZE. */ case NBD_CMD_WRITE: if (h->strict & LIBNBD_STRICT_PAYLOAD && count > h->payload_maximum) { set_error (ERANGE, "request too large: maximum payload size is %" PRIu32, h->payload_maximum); goto err; } /* fallthrough */ case NBD_CMD_READ: if (count > MAX_REQUEST_SIZE) { set_error (ERANGE, "request too large: maximum request size is %d", MAX_REQUEST_SIZE); goto err; } break; case NBD_CMD_BLOCK_STATUS: if (data) { ids = data; count = ids->len * sizeof (uint32_t); data = ids->ptr; if (count > MAX_REQUEST_SIZE || (h->strict & LIBNBD_STRICT_PAYLOAD && count > h->payload_maximum)) { set_error (ERANGE, "filter set too large"); goto err; } break; } /* fallthrough */ default: /* Other commands are limited by the 32 bit field in the command * structure on the wire, unless extended headers were negotiated. */ if (!h->extended_headers && count > UINT32_MAX) { set_error (ERANGE, "request too large: maximum request size is %" PRIu32, UINT32_MAX); goto err; } break; } cmd = calloc (1, sizeof *cmd); if (cmd == NULL) { set_error (errno, "calloc"); goto err; } cmd->flags = flags; cmd->type = type; cmd->cookie = h->unique++; cmd->offset = offset; cmd->count = count; cmd->data = data; cmd->ids = ids; if (cb) cmd->cb = *cb; /* For NBD_CMD_READ, cmd->data defaults to being pre-zeroed in the * prologue created by the generator. Thus, if a (non-compliant) * server with structured replies fails to send back sufficient data * to cover the whole buffer, we still behave as if it had sent * zeroes for those portions, rather than leaking any uninitialized * data, and without having to complicate our state machine to track * which portions of the read buffer were actually populated. But * if the user opts in to disabling set_pread_initialize, then we * need to memset zeroes as they are read (and the user gets their * own garbage back in the case of a non-compliant server). */ cmd->initialized = h->pread_initialize; /* Add the command to the end of the queue. Kick the state machine * if there is no other command being processed, otherwise, it will * be handled automatically on a future cycle around to READY. * Beyond this point, we have to return a cookie to the user, since * we are queuing the command, even if kicking the state machine * detects a failure. Not reporting a state machine failure here is * okay - any caller of an async command will be calling more API to * await results, and will eventually learn that the machine has * moved on to DEAD at that time. */ h->in_flight++; if (h->cmds_to_issue != NULL) { assert (nbd_internal_is_state_processing (get_next_state (h))); h->cmds_to_issue_tail = h->cmds_to_issue_tail->next = cmd; } else { assert (h->cmds_to_issue_tail == NULL); h->cmds_to_issue = h->cmds_to_issue_tail = cmd; if (nbd_internal_is_state_ready (get_next_state (h)) && nbd_internal_run (h, cmd_issue) == -1) debug (h, "command queued, ignoring state machine failure"); } return cmd->cookie; err: /* Since we did not queue the command, we must free the callbacks. */ if (cb) { if (type == NBD_CMD_BLOCK_STATUS) { if (cb->wide) FREE_CALLBACK (cb->fn.extent32); else FREE_CALLBACK (cb->fn.extent64); if (ids) { uint32_vector_reset (ids); free (ids); } } if (type == NBD_CMD_READ) FREE_CALLBACK (cb->fn.chunk); FREE_CALLBACK (cb->completion); } return -1; } int64_t nbd_unlocked_aio_pread (struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .completion = *completion }; SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_READ, offset, count, EINVAL, buf, &cb); } int64_t nbd_unlocked_aio_pread_structured (struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback *chunk, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .fn.chunk = *chunk, .completion = *completion }; if (h->strict & LIBNBD_STRICT_COMMANDS) { if ((flags & LIBNBD_CMD_FLAG_DF) != 0 && nbd_unlocked_can_df (h) != 1) { set_error (EINVAL, "server does not support the DF flag"); return -1; } } SET_CALLBACK_TO_NULL (*chunk); SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_READ, offset, count, EINVAL, buf, &cb); } int64_t nbd_unlocked_aio_pwrite (struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .completion = *completion }; if (h->strict & LIBNBD_STRICT_AUTO_FLAG) { /* It is more convenient to manage PAYLOAD_LEN by what was negotiated * than to require the user to have to set it correctly. */ if (h->extended_headers) flags |= LIBNBD_CMD_FLAG_PAYLOAD_LEN; else flags &= ~LIBNBD_CMD_FLAG_PAYLOAD_LEN; } if (h->strict & LIBNBD_STRICT_COMMANDS) { if (nbd_unlocked_is_read_only (h) == 1) { set_error (EPERM, "server does not support write operations"); return -1; } if ((flags & LIBNBD_CMD_FLAG_FUA) != 0 && nbd_unlocked_can_fua (h) != 1) { set_error (EINVAL, "server does not support the FUA flag"); return -1; } if (!!(flags & LIBNBD_CMD_FLAG_PAYLOAD_LEN) != h->extended_headers) { set_error (EINVAL, "incorrect setting for PAYLOAD_LEN flag"); return -1; } } SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_WRITE, offset, count, ENOSPC, (void *)buf, &cb); } int64_t nbd_unlocked_aio_flush (struct nbd_handle *h, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .completion = *completion }; if (h->strict & LIBNBD_STRICT_COMMANDS) { if (nbd_unlocked_can_flush (h) != 1) { set_error (EINVAL, "server does not support flush operations"); return -1; } } SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_FLUSH, 0, 0, 0, NULL, &cb); } int64_t nbd_unlocked_aio_trim (struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .completion = *completion }; if (h->strict & LIBNBD_STRICT_COMMANDS) { if (nbd_unlocked_can_trim (h) != 1) { set_error (EINVAL, "server does not support trim operations"); return -1; } if (nbd_unlocked_is_read_only (h) == 1) { set_error (EPERM, "server does not support write operations"); return -1; } if ((flags & LIBNBD_CMD_FLAG_FUA) != 0 && nbd_unlocked_can_fua (h) != 1) { set_error (EINVAL, "server does not support the FUA flag"); return -1; } } SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_TRIM, offset, count, ENOSPC, NULL, &cb); } int64_t nbd_unlocked_aio_cache (struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .completion = *completion }; if (h->strict & LIBNBD_STRICT_COMMANDS) { /* Actually according to the NBD protocol document, servers do exist * that support NBD_CMD_CACHE but don't advertise the * NBD_FLAG_SEND_CACHE bit, but we ignore those. */ if (nbd_unlocked_can_cache (h) != 1) { set_error (EINVAL, "server does not support cache operations"); return -1; } } SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_CACHE, offset, count, EINVAL, NULL, &cb); } int64_t nbd_unlocked_aio_zero (struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .completion = *completion }; if (h->strict & LIBNBD_STRICT_COMMANDS) { if (nbd_unlocked_can_zero (h) != 1) { set_error (EINVAL, "server does not support zero operations"); return -1; } if (nbd_unlocked_is_read_only (h) == 1) { set_error (EPERM, "server does not support write operations"); return -1; } if ((flags & LIBNBD_CMD_FLAG_FUA) != 0 && nbd_unlocked_can_fua (h) != 1) { set_error (EINVAL, "server does not support the FUA flag"); return -1; } if ((flags & LIBNBD_CMD_FLAG_FAST_ZERO) != 0 && nbd_unlocked_can_fast_zero (h) != 1) { set_error (EINVAL, "server does not support the fast zero flag"); return -1; } } SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_WRITE_ZEROES, offset, count, ENOSPC, NULL, &cb); } static int check_aio_block_status (struct nbd_handle *h) { if (h->strict & LIBNBD_STRICT_COMMANDS) { if (!h->structured_replies) { set_error (ENOTSUP, "server does not support structured replies"); return -1; } if (!h->meta_valid || h->meta_contexts.len == 0) { set_error (ENOTSUP, "did not negotiate any metadata contexts, " "either you did not call nbd_add_meta_context before " "connecting or the server does not support it"); return -1; } } return 0; } int64_t nbd_unlocked_aio_block_status (struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback *extent, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .fn.extent32 = *extent, .wide = false, .completion = *completion }; if (check_aio_block_status (h) == -1) return -1; SET_CALLBACK_TO_NULL (*extent); SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_BLOCK_STATUS, offset, count, EINVAL, NULL, &cb); } int64_t nbd_unlocked_aio_block_status_64 (struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback *extent64, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .fn.extent64 = *extent64, .wide = true, .completion = *completion }; if (check_aio_block_status (h) == -1) return -1; SET_CALLBACK_TO_NULL (*extent64); SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_BLOCK_STATUS, offset, count, EINVAL, NULL, &cb); } int64_t nbd_unlocked_aio_block_status_filter (struct nbd_handle *h, uint64_t count, uint64_t offset, char **filter, nbd_extent64_callback *extent64, nbd_completion_callback *completion, uint32_t flags) { struct command_cb cb = { .fn.extent64 = *extent64, .wide = true, .completion = *completion }; uint32_vector *ids; char *name; size_t i; if (check_aio_block_status (h) == -1) return -1; if (h->strict & LIBNBD_STRICT_AUTO_FLAG) { /* Because this affects wire format, it is more convenient to manage * PAYLOAD_LEN by what was negotiated than to require the user to * have to set it correctly. */ if (!h->extended_headers) { set_error (ENOTSUP, "server does not support extended headers"); return -1; } flags |= LIBNBD_CMD_FLAG_PAYLOAD_LEN; } if (h->strict & LIBNBD_STRICT_COMMANDS) { if (nbd_unlocked_can_block_status_payload (h) != 1) { set_error (EINVAL, "server does not support the block status payload flag"); return -1; } if ((flags & LIBNBD_CMD_FLAG_PAYLOAD_LEN) == 0) { set_error (EINVAL, "incorrect setting for PAYLOAD_LEN flag"); return -1; } } ids = calloc (1, sizeof *ids); if (ids == NULL) { set_error (errno, "calloc"); return -1; } if (uint32_vector_append (ids, htobe32 (count >> 32)) == -1 || uint32_vector_append (ids, htobe32 (count)) == -1) { set_error (errno, "realloc"); goto fail; } /* O(n^2) search - hopefully filter and negotiated contexts are both small */ for ( ; (name = *filter) != NULL; filter++) { if (!h->meta_valid) { set_error (EINVAL, "context %s not negotiated", name); goto fail; } for (i = 0; i < h->meta_contexts.len; i++) { struct meta_context *meta = &h->meta_contexts.ptr[i]; if (strcmp (name, meta->name) == 0) { if (uint32_vector_append (ids, htobe32 (meta->context_id)) == -1) { set_error (errno, "realloc"); goto fail; } break; } } if (i == h->meta_contexts.len) { set_error (EINVAL, "context %s not negotiated", name); goto fail; } } SET_CALLBACK_TO_NULL (*extent64); SET_CALLBACK_TO_NULL (*completion); return nbd_internal_command_common (h, flags, NBD_CMD_BLOCK_STATUS, offset, count, EINVAL, ids, &cb); fail: uint32_vector_reset (ids); free (ids); return -1; } libnbd-1.20.3/lib/socket.c0000644000175000017500000000510514616437241010723 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* struct socket_ops for a plain ordinary Berkeley socket. */ #include #include #include #include #include #include #include #include #include "internal.h" static ssize_t socket_recv (struct nbd_handle *h, struct socket *sock, void *buf, size_t len) { ssize_t r; r = recv (sock->u.fd, buf, len, 0); if (r == -1 && errno != EAGAIN && errno != EWOULDBLOCK) set_error (errno, "recv"); return r; } static ssize_t socket_send (struct nbd_handle *h, struct socket *sock, const void *buf, size_t len, int flags) { ssize_t r; /* We don't want to die from SIGPIPE, but also don't want to force a * changed signal handler on the rest of the application. */ flags |= MSG_NOSIGNAL; r = send (sock->u.fd, buf, len, flags); if (r == -1 && errno != EAGAIN && errno != EWOULDBLOCK) set_error (errno, "send"); return r; } static int socket_get_fd (struct socket *sock) { return sock->u.fd; } static bool socket_shut_writes (struct nbd_handle *h, struct socket *sock) { if (shutdown (sock->u.fd, SHUT_WR) == -1) debug (h, "ignoring shutdown failure: %s", strerror (errno)); /* Regardless of any errors, we don't need to retry. */ return true; } static int socket_close (struct socket *sock) { int r = close (sock->u.fd); free (sock); return r; } static struct socket_ops socket_ops = { .recv = socket_recv, .send = socket_send, .get_fd = socket_get_fd, .shut_writes = socket_shut_writes, .close = socket_close, }; struct socket * nbd_internal_socket_create (int fd) { struct socket *sock; sock = malloc (sizeof *sock); if (sock == NULL) { set_error (errno, "malloc"); return NULL; } sock->u.fd = fd; sock->ops = &socket_ops; return sock; } libnbd-1.20.3/lib/states.c0000444000175000017500000060740714615703770010753 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator generator/states*.c * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #line 1 "generator/states-connect-socket-activation.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine related to connecting with systemd socket activation. */ #include #include #include #include #include #include #include #include #include #include "internal.h" #include "compiler-macros.h" #include "unique-name.h" #include "array-size.h" #include "checked-overflow.h" /* This is baked into the systemd socket activation API. */ #define FIRST_SOCKET_ACTIVATION_FD 3 /* Describes a systemd socket activation environment variable. */ struct sact_var { const char *prefix; /* variable name and equal sign */ size_t prefix_len; const char *value; size_t value_len; }; /* Determine the length of a string, using "sizeof" whenever possible. * * Do not use this macro on an argument that has side effects, as no guarantees * are given regarding the number of times the argument may be evaluated. * TYPE_IS_ARRAY(s) itself may contribute a different number of evaluations * dependent on whether "s" has variably modified type, and then the conditional * operator either evaluates "sizeof s" (which contributes 0 or 1 evaluations, * dependent on whether "s" has variably modified type) or strlen(s) (which * contributes 1 evaluation). Also note that the argument of the "sizeof" * operator is *only* parenthesized because "s" is a macro parameter here. */ #define STRLEN1(s) ((TYPE_IS_ARRAY (s) ? sizeof (s) - 1 : strlen (s))) /* Push a new element to an array of "sact_var" structures. * * "vars" is the array to extend. "num_vars" (of type (size_t *)) points to the * number of elements that the array, on input, contains; (*num_vars) is * increased by one on output. "prefix" and "value" serve as the values for * setting the fields in the new element. "ofs" (of type (size_t *)) may be * NULL; if it isn't, then on output, (*ofs) is set to the input value of * (*num_vars): the offset of the just-pushed element. * * Avoid arguments with side-effects here as well. */ #define SACT_VAR_PUSH(vars, num_vars, prefix, value, ofs) \ SACT_VAR_PUSH1 ((vars), (num_vars), (prefix), (value), (ofs), \ NBDKIT_UNIQUE_NAME (_ofs)) #define SACT_VAR_PUSH1(vars, num_vars, prefix, value, ofs, ofs1) \ do { \ size_t *ofs1; \ \ assert (*(num_vars) < ARRAY_SIZE (vars)); \ ofs1 = (ofs); \ if (ofs1 != NULL) \ *ofs1 = *(num_vars); \ (vars)[(*(num_vars))++] = (struct sact_var){ (prefix), STRLEN1 (prefix), \ (value), STRLEN1 (value) }; \ } while (0) extern char **environ; /* Prepare environment for calling execvp when doing systemd socket activation. * Takes the current environment and copies it. Removes any existing socket * activation variables and replaces them with new ones. Variables in "sact_var" * will be placed at the front of "env", preserving the order from "sact_var". */ static int prepare_socket_activation_environment (string_vector *env, const struct sact_var *sact_var, size_t num_vars) { const struct sact_var *var_end; char *new_var; const struct sact_var *var; size_t i; *env = (string_vector)empty_vector; /* Set the exclusive limit for loops over "sact_var". */ var_end = sact_var + num_vars; /* New environment variable being constructed for "env". */ new_var = NULL; /* Copy "sact_var" to the front of "env". */ for (var = sact_var; var < var_end; ++var) { size_t new_var_size; char *p; /* Calculate the size of the "NAME=value" string. */ if (ADD_OVERFLOW (var->prefix_len, var->value_len, &new_var_size) || ADD_OVERFLOW (new_var_size, 1u, &new_var_size)) { errno = EOVERFLOW; goto err; } /* Allocate and format "NAME=value". */ new_var = malloc (new_var_size); if (new_var == NULL) goto err; p = new_var; memcpy (p, var->prefix, var->prefix_len); p += var->prefix_len; memcpy (p, var->value, var->value_len); p += var->value_len; *p++ = '\0'; /* Push "NAME=value" to the vector. */ if (string_vector_append (env, new_var) == -1) goto err; /* Ownership transferred. */ new_var = NULL; } /* Append the current environment to "env", but remove "sact_var". */ for (i = 0; environ[i] != NULL; ++i) { for (var = sact_var; var < var_end; ++var) { if (strncmp (environ[i], var->prefix, var->prefix_len) == 0) break; } /* Drop known socket activation variable from the current environment. */ if (var < var_end) continue; new_var = strdup (environ[i]); if (new_var == NULL) goto err; if (string_vector_append (env, new_var) == -1) goto err; /* Ownership transferred. */ new_var = NULL; } /* The environ must be NULL-terminated. */ if (string_vector_append (env, NULL) == -1) goto err; return 0; err: set_error (errno, "malloc"); free (new_var); string_vector_empty (env); return -1; } #line 1 "generator/states-connect.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machines related to connecting to the server. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern char **environ; /* Disable Nagle's algorithm on the socket, but don't fail. */ static void disable_nagle (int sock) { const int flag = 1; setsockopt (sock, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof flag); } /* Disable SIGPIPE on FreeBSD & MacOS. * * Does nothing on other platforms, but if those platforms have * MSG_NOSIGNAL then we will set that when writing. (FreeBSD has both.) */ static void disable_sigpipe (int sock) { #ifdef SO_NOSIGPIPE const int flag = 1; setsockopt (sock, SOL_SOCKET, SO_NOSIGPIPE, &flag, sizeof flag); #endif } #line 1 "generator/states-issue-command.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for issuing commands (requests) to the server. */ #line 1 "generator/states-magic.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for parsing the initial magic number from the server. */ #line 1 "generator/states-newstyle-opt-export-name.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for ending newstyle handshake with NBD_OPT_EXPORT_NAME. */ #line 1 "generator/states-newstyle-opt-extended-headers.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for negotiating NBD_OPT_EXTENDED_HEADERS. */ #line 1 "generator/states-newstyle-opt-go.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for ending fixed newstyle handshake with NBD_OPT_GO. */ #line 1 "generator/states-newstyle-opt-list.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for sending NBD_OPT_LIST to list exports. * * This is only reached via nbd_opt_list during opt_mode. */ #line 1 "generator/states-newstyle-opt-meta-context.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for negotiating NBD_OPT_SET/LIST_META_CONTEXT. */ #line 1 "generator/states-newstyle-opt-starttls.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for sending NBD_OPT_STARTTLS. */ #line 1 "generator/states-newstyle-opt-structured-reply.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for negotiating NBD_OPT_STRUCTURED_REPLY. */ #line 1 "generator/states-newstyle.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include "internal.h" /* Common code for parsing a reply to NBD_OPT_*. */ static int prepare_for_reply_payload (struct nbd_handle *h, uint32_t opt) { const size_t maxpayload = sizeof h->sbuf.or.payload; uint64_t magic; uint32_t option; uint32_t reply; uint32_t len; magic = be64toh (h->sbuf.or.option_reply.magic); option = be32toh (h->sbuf.or.option_reply.option); reply = be32toh (h->sbuf.or.option_reply.reply); len = be32toh (h->sbuf.or.option_reply.replylen); if (magic != NBD_REP_MAGIC || option != opt) { set_error (0, "handshake: invalid option reply magic or option"); return -1; } /* Validate lengths that the state machine depends on. */ switch (reply) { case NBD_REP_ACK: if (len != 0) { set_error (0, "handshake: invalid NBD_REP_ACK option reply length"); return -1; } break; case NBD_REP_INFO: /* Can't enforce an upper bound, thanks to unknown INFOs */ if (len < sizeof h->sbuf.or.payload.export.info) { set_error (0, "handshake: NBD_REP_INFO reply length too small"); return -1; } break; case NBD_REP_META_CONTEXT: if (len <= sizeof h->sbuf.or.payload.context.context || len > sizeof h->sbuf.or.payload.context) { set_error (0, "handshake: invalid NBD_REP_META_CONTEXT reply length"); return -1; } break; } /* Read the following payload if it is short enough to fit in the * static buffer. If it's too long, skip it. */ len = be32toh (h->sbuf.or.option_reply.replylen); if (len > MAX_REQUEST_SIZE) { set_error (0, "handshake: invalid option reply length"); return -1; } else if (len <= maxpayload) h->rbuf = &h->sbuf.or.payload; else h->rbuf = NULL; h->rlen = len; return 0; } /* Check an unexpected server reply. If it is an error, log any * message from the server and return 0; otherwise, return -1. */ static int handle_reply_error (struct nbd_handle *h) { uint32_t len; uint32_t reply; len = be32toh (h->sbuf.or.option_reply.replylen); reply = be32toh (h->sbuf.or.option_reply.reply); if (!NBD_REP_IS_ERR (reply)) { set_error (0, "handshake: unexpected option reply type %d", reply); return -1; } assert (NBD_MAX_STRING < sizeof h->sbuf.or.payload); if (len > NBD_MAX_STRING) { set_error (0, "handshake: option error string too long"); return -1; } if (len > 0) debug (h, "handshake: server error message: %.*s", (int)len, h->sbuf.or.payload.err_msg); return 0; } /* State machine for parsing the fixed newstyle handshake. */ #line 1 "generator/states-oldstyle.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for parsing the oldstyle handshake. */ #line 1 "generator/states-reply-chunk.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for parsing structured reply chunk payloads from the server. */ #include #include #include #include "minmax.h" /* Structured reply must be completely inside the bounds of the * requesting command. */ static bool structured_reply_in_bounds (uint64_t offset, uint32_t length, const struct command *cmd) { if (offset < cmd->offset || offset >= cmd->offset + cmd->count || offset + length > cmd->offset + cmd->count) { set_error (0, "range of structured reply is out of bounds, " "offset=%" PRIu64 ", cmd->offset=%" PRIu64 ", " "length=%" PRIu32 ", cmd->count=%" PRIu64 ": " "this is likely to be a bug in the NBD server", offset, cmd->offset, length, cmd->count); return false; } return true; } /* Return true if payload length of block status reply is valid. */ static bool bs_reply_length_ok (uint16_t type, uint32_t length) { size_t prefix_len; size_t extent_len; if (type == NBD_REPLY_TYPE_BLOCK_STATUS) { prefix_len = sizeof (struct nbd_chunk_block_status_32); extent_len = sizeof (struct nbd_block_descriptor_32); } else { assert (type == NBD_REPLY_TYPE_BLOCK_STATUS_EXT); prefix_len = sizeof (struct nbd_chunk_block_status_64); extent_len = sizeof (struct nbd_block_descriptor_64); } /* At least one descriptor is needed after id prefix */ if (length < prefix_len + extent_len) return false; /* There must be an integral number of extents */ length -= prefix_len; if (length % extent_len != 0) return false; return true; } #line 1 "generator/states-reply-simple.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for parsing simple replies from the server. */ #line 1 "generator/states-reply.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #define ASSERT_MEMBER_ALIAS(type, member_a, member_b) \ STATIC_ASSERT (offsetof (type, member_a) == offsetof (type, member_b) && \ sizeof ((type *)NULL)->member_a == \ sizeof ((type *)NULL)->member_b, member_alias) /* State machine for receiving reply messages from the server. * * Note that we never block while in this sub-group. If there is * insufficient data to finish parsing a reply, requiring us to block * until POLLIN, we instead track where in the state machine we left * off, then return to READY to actually block. Then, on entry to * REPLY.START, we can tell if this is the start of a new reply (rlen * is 0, stay put), a continuation of the preamble (reply_state is * STATE_START, resume with RECV_REPLY), or a continuation from any * other location (reply_state contains the state to jump to). */ static void save_reply_state (struct nbd_handle *h) { assert (h->rlen); assert (h->reply_state == STATE_START); h->reply_state = get_next_state (h); assert (h->reply_state != STATE_START); } #line 1 "generator/states.c" /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* This isn't "real" C code. It is read by the generator, parsed, and * put into generated files. Also it won't make much sense unless you * read the generator state machine and documentation in * generator/README.state-machine.md first. */ #include #include #include #include #include #include #include #include #include #include "minmax.h" #include "internal.h" /* Uncomment this to dump received protocol packets to stderr. */ /*#define DUMP_PACKETS 1*/ static int recv_into_rbuf (struct nbd_handle *h) { ssize_t r; void *rbuf; size_t rlen; /* As a special case h->rbuf is allowed to be NULL, meaning * throw away the data. * * When building with DUMP_PACKETS, it's worth debugging even * discarded packets; this makes our stack frame larger, but * DUMP_PACKETS is already for developers. Otherwise, we share a * single static sink buffer across all nbd handles; we don't care * about thread-safety issues with two clients discarding data at * the same time, because we never read the sink. */ #ifdef DUMP_PACKETS char sink[1024]; #else static char sink[BUFSIZ]; #endif if (h->rlen == 0) return 0; /* move to next state */ if (h->rbuf) { rbuf = h->rbuf; rlen = h->rlen; } else { rbuf = sink; rlen = MIN (h->rlen, sizeof sink); } r = h->sock->ops->recv (h, h->sock, rbuf, rlen); if (r == -1) { if (errno == EAGAIN || errno == EWOULDBLOCK) return 1; /* more data */ /* sock->ops->recv called set_error already. */ return -1; } if (r == 0) { set_error (0, "recv: server disconnected unexpectedly"); return -1; } #ifdef DUMP_PACKETS nbd_internal_hexdump (rbuf, r, stderr); #endif h->bytes_received += r; if (h->rbuf) h->rbuf = (char *)h->rbuf + r; h->rlen -= r; if (h->rlen == 0) return 0; /* move to next state */ else return 1; /* more data */ } static int send_from_wbuf (struct nbd_handle *h) { ssize_t r; if (h->wlen == 0) goto next_state; r = h->sock->ops->send (h, h->sock, h->wbuf, h->wlen, h->wflags); if (r == -1) { if (errno == EAGAIN || errno == EWOULDBLOCK) return 1; /* more data */ /* sock->ops->send called set_error already. */ return -1; } h->bytes_sent += r; h->wbuf = (char *)h->wbuf + r; h->wlen -= r; if (h->wlen == 0) goto next_state; else return 1; /* more data */ next_state: h->wflags = 0; /* reset this when moving to next state */ return 0; /* move to next state */ } /* Forcefully fail any in-flight option */ static void abort_option (struct nbd_handle *h) { int err = nbd_get_errno () ? : ENOTCONN; CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); } /* Forcefully fail any remaining in-flight commands in list */ void nbd_internal_abort_commands (struct nbd_handle *h, struct command **list) { struct command *next, *cmd; for (cmd = *list, *list = NULL; cmd != NULL; cmd = next) { bool retire = cmd->type == NBD_CMD_DISC; next = cmd->next; if (CALLBACK_IS_NOT_NULL (cmd->cb.completion)) { int error = cmd->error ? cmd->error : ENOTCONN; int r; assert (cmd->type != NBD_CMD_DISC); r = CALL_CALLBACK (cmd->cb.completion, &error); switch (r) { case -1: if (error) cmd->error = error; break; case 1: retire = true; break; } } if (cmd->error == 0) cmd->error = ENOTCONN; if (retire) nbd_internal_retire_and_free_command (cmd); else { cmd->next = NULL; if (h->cmds_done_tail) h->cmds_done_tail->next = cmd; else { assert (h->cmds_done == NULL); h->cmds_done = cmd; } h->cmds_done_tail = cmd; } } } #define SET_NEXT_STATE(s) (*blocked = false, *next_state = (s)) #define SET_NEXT_STATE_AND_BLOCK(s) (*next_state = (s)) /* START: Handle after being initially created */ static int enter_STATE_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { return 0; } #line 955 "lib/states.c" int nbd_internal_enter_STATE_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_START; r = enter_STATE_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* CONNECT.START: Initial call to connect(2) on the socket */ static int enter_STATE_CONNECT_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 67 "generator/states-connect.c" sa_family_t family; int fd, r; assert (!h->sock); family = h->connaddr.ss_family; fd = nbd_internal_socket (family, SOCK_STREAM, 0, true); if (fd == -1) { SET_NEXT_STATE (STATE_DEAD); set_error (errno, "socket"); return 0; } h->sock = nbd_internal_socket_create (fd); if (!h->sock) { SET_NEXT_STATE (STATE_DEAD); return 0; } disable_nagle (fd); disable_sigpipe (fd); r = connect (fd, (struct sockaddr *)&h->connaddr, h->connaddrlen); if (r == 0 || (r == -1 && errno == EINPROGRESS)) return 0; assert (r == -1); #ifdef __linux__ if (errno == EAGAIN && family == AF_UNIX) { /* This can happen on Linux when connecting to a Unix domain * socket, if the server's backlog is full. Unfortunately there * is nothing good we can do on the client side when this happens * since any solution would involve sleeping or busy-waiting. The * only solution is on the server side, increasing the backlog. * But at least improve the error message. * https://bugzilla.redhat.com/1925045 */ SET_NEXT_STATE (STATE_DEAD); set_error (errno, "connect: server backlog overflowed, " "see https://bugzilla.redhat.com/1925045"); return 0; } #endif SET_NEXT_STATE (STATE_DEAD); set_error (errno, "connect"); return 0; } #line 1033 "lib/states.c" int nbd_internal_enter_STATE_CONNECT_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_CONNECT_START; r = enter_STATE_CONNECT_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "CONNECT.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* CONNECT.CONNECTING: Connecting to the remote server */ static int enter_STATE_CONNECT_CONNECTING ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 112 "generator/states-connect.c" int status; socklen_t len = sizeof status; if (getsockopt (h->sock->ops->get_fd (h->sock), SOL_SOCKET, SO_ERROR, &status, &len) == -1) { SET_NEXT_STATE (STATE_DEAD); set_error (errno, "getsockopt: SO_ERROR"); return 0; } /* This checks the status of the original connect call. */ if (status == 0) { SET_NEXT_STATE (STATE_MAGIC_START); return 0; } else { SET_NEXT_STATE (STATE_DEAD); set_error (status, "connect"); return 0; } } #line 1087 "lib/states.c" int nbd_internal_enter_STATE_CONNECT_CONNECTING ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_CONNECT_CONNECTING; r = enter_STATE_CONNECT_CONNECTING ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "CONNECT.CONNECTING", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* CONNECT_TCP.START: Connect to a remote TCP server */ static int enter_STATE_CONNECT_TCP_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 133 "generator/states-connect.c" int r; assert (h->hostname != NULL); assert (h->port != NULL); if (h->result) { freeaddrinfo (h->result); h->result = NULL; } h->connect_errno = 0; memset (&h->hints, 0, sizeof h->hints); h->hints.ai_family = AF_UNSPEC; h->hints.ai_socktype = SOCK_STREAM; h->hints.ai_flags = 0; h->hints.ai_protocol = 0; /* XXX Unfortunately getaddrinfo blocks. getaddrinfo_a isn't * portable and in any case isn't an alternative because it can't be * integrated into a main loop. */ r = getaddrinfo (h->hostname, h->port, &h->hints, &h->result); if (r != 0) { SET_NEXT_STATE (STATE_START); set_error (0, "getaddrinfo: hostname \"%s\" port \"%s\": %s", h->hostname, h->port, gai_strerror (r)); return -1; } h->rp = h->result; SET_NEXT_STATE (STATE_CONNECT_TCP_CONNECT); return 0; } #line 1155 "lib/states.c" int nbd_internal_enter_STATE_CONNECT_TCP_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_CONNECT_TCP_START; r = enter_STATE_CONNECT_TCP_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "CONNECT_TCP.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* CONNECT_TCP.CONNECT: Initial call to connect(2) on a TCP socket */ static int enter_STATE_CONNECT_TCP_CONNECT ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 168 "generator/states-connect.c" int fd; assert (!h->sock); if (h->rp == NULL) { /* We tried all the results from getaddrinfo without success. * Save errno from most recent connect(2) call. XXX */ SET_NEXT_STATE (STATE_START); set_error (h->connect_errno, "connect: %s:%s: could not connect to remote host", h->hostname, h->port); return -1; } fd = nbd_internal_socket (h->rp->ai_family, h->rp->ai_socktype, h->rp->ai_protocol, true); if (fd == -1) { SET_NEXT_STATE (STATE_CONNECT_TCP_NEXT_ADDRESS); return 0; } h->sock = nbd_internal_socket_create (fd); if (!h->sock) { SET_NEXT_STATE (STATE_DEAD); return 0; } disable_nagle (fd); disable_sigpipe (fd); if (connect (fd, h->rp->ai_addr, h->rp->ai_addrlen) == -1) { if (errno != EINPROGRESS) { if (h->connect_errno == 0) h->connect_errno = errno; SET_NEXT_STATE (STATE_CONNECT_TCP_NEXT_ADDRESS); return 0; } } SET_NEXT_STATE (STATE_CONNECT_TCP_CONNECTING); return 0; } #line 1233 "lib/states.c" int nbd_internal_enter_STATE_CONNECT_TCP_CONNECT ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_CONNECT_TCP_CONNECT; r = enter_STATE_CONNECT_TCP_CONNECT ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "CONNECT_TCP.CONNECT", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* CONNECT_TCP.CONNECTING: Connecting to the remote server over a TCP socket */ static int enter_STATE_CONNECT_TCP_CONNECTING ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 213 "generator/states-connect.c" int status; socklen_t len = sizeof status; if (getsockopt (h->sock->ops->get_fd (h->sock), SOL_SOCKET, SO_ERROR, &status, &len) == -1) { SET_NEXT_STATE (STATE_DEAD); set_error (errno, "getsockopt: SO_ERROR"); return 0; } /* This checks the status of the original connect call. */ if (status == 0) SET_NEXT_STATE (STATE_MAGIC_START); else { if (h->connect_errno == 0) h->connect_errno = status; SET_NEXT_STATE (STATE_CONNECT_TCP_NEXT_ADDRESS); } return 0; } #line 1286 "lib/states.c" int nbd_internal_enter_STATE_CONNECT_TCP_CONNECTING ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_CONNECT_TCP_CONNECTING; r = enter_STATE_CONNECT_TCP_CONNECTING ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "CONNECT_TCP.CONNECTING", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* CONNECT_TCP.NEXT_ADDRESS: Connecting to the next address over a TCP socket */ static int enter_STATE_CONNECT_TCP_NEXT_ADDRESS ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 233 "generator/states-connect.c" if (h->sock) { h->sock->ops->close (h->sock); h->sock = NULL; } if (h->rp) h->rp = h->rp->ai_next; SET_NEXT_STATE (STATE_CONNECT_TCP_CONNECT); return 0; } #line 1329 "lib/states.c" int nbd_internal_enter_STATE_CONNECT_TCP_NEXT_ADDRESS ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_CONNECT_TCP_NEXT_ADDRESS; r = enter_STATE_CONNECT_TCP_NEXT_ADDRESS ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "CONNECT_TCP.NEXT_ADDRESS", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* CONNECT_COMMAND.START: Connect to a subprocess */ static int enter_STATE_CONNECT_COMMAND_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 243 "generator/states-connect.c" enum state next; bool parentfd_transferred; int sv[2]; int flags; struct socket *sock; struct execvpe execvpe_ctx; pid_t pid; assert (!h->sock); assert (h->argv.ptr); assert (h->argv.ptr[0]); next = STATE_DEAD; parentfd_transferred = false; if (nbd_internal_socketpair (AF_UNIX, SOCK_STREAM, 0, sv) == -1) { set_error (errno, "socketpair"); goto done; } /* A process is effectively in an unusable state if any of STDIN_FILENO * (fd#0), STDOUT_FILENO (fd#1) and STDERR_FILENO (fd#2) don't exist. If they * exist however, then the socket pair created above will not intersect with * the fd set { 0, 1, 2 }. This is relevant for the child-side dup2() logic * below. */ assert (sv[0] > STDERR_FILENO); assert (sv[1] > STDERR_FILENO); /* Only the parent-side end of the socket pair must be set to non-blocking, * because the child may not be expecting a non-blocking socket. */ flags = fcntl (sv[0], F_GETFL, 0); if (flags == -1 || fcntl (sv[0], F_SETFL, flags|O_NONBLOCK) == -1) { set_error (errno, "fcntl"); goto close_socket_pair; } sock = nbd_internal_socket_create (sv[0]); if (!sock) /* nbd_internal_socket_create() calls set_error() internally */ goto close_socket_pair; parentfd_transferred = true; if (nbd_internal_execvpe_init (&execvpe_ctx, h->argv.ptr[0], h->argv.len) == -1) { set_error (errno, "nbd_internal_execvpe_init"); goto close_high_level_socket; } pid = fork (); if (pid == -1) { set_error (errno, "fork"); goto uninit_execvpe; } if (pid == 0) { /* child - run command */ if (close (sv[0]) == -1) { nbd_internal_fork_safe_perror ("close"); _exit (126); } if (dup2 (sv[1], STDIN_FILENO) == -1 || dup2 (sv[1], STDOUT_FILENO) == -1) { nbd_internal_fork_safe_perror ("dup2"); _exit (126); } NBD_INTERNAL_FORK_SAFE_ASSERT (sv[1] != STDIN_FILENO); NBD_INTERNAL_FORK_SAFE_ASSERT (sv[1] != STDOUT_FILENO); if (close (sv[1]) == -1) { nbd_internal_fork_safe_perror ("close"); _exit (126); } /* Restore SIGPIPE back to SIG_DFL. */ if (signal (SIGPIPE, SIG_DFL) == SIG_ERR) { nbd_internal_fork_safe_perror ("signal"); _exit (126); } (void)nbd_internal_fork_safe_execvpe (&execvpe_ctx, &h->argv, environ); nbd_internal_fork_safe_perror (h->argv.ptr[0]); if (errno == ENOENT) _exit (127); else _exit (126); } /* Parent -- we're done; commit. */ h->pid = pid; h->sock = sock; /* The sockets are connected already, we can jump directly to * receiving the server magic. */ next = STATE_MAGIC_START; /* fall through, for releasing the temporaries */ uninit_execvpe: nbd_internal_execvpe_uninit (&execvpe_ctx); close_high_level_socket: if (next == STATE_DEAD) sock->ops->close (sock); close_socket_pair: assert (next == STATE_DEAD || parentfd_transferred); if (!parentfd_transferred) close (sv[0]); close (sv[1]); done: SET_NEXT_STATE (next); return 0; } #line 1479 "lib/states.c" int nbd_internal_enter_STATE_CONNECT_COMMAND_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_CONNECT_COMMAND_START; r = enter_STATE_CONNECT_COMMAND_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "CONNECT_COMMAND.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* CONNECT_SA.START: Connect to a subprocess with systemd socket activation */ static int enter_STATE_CONNECT_SA_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 180 "generator/states-connect-socket-activation.c" enum state next; char *tmpdir; char *sockpath; int s; struct sockaddr_un addr; struct execvpe execvpe_ctx; size_t num_vars; struct sact_var sact_var[3]; size_t pid_ofs; string_vector env; pid_t pid; assert (!h->sock); assert (h->argv.ptr); assert (h->argv.ptr[0]); next = STATE_DEAD; /* Use /tmp instead of TMPDIR because we must ensure the path is * short enough to store in the sockaddr_un. On some platforms this * may cause problems so we may need to revisit it. XXX */ tmpdir = strdup ("/tmp/libnbdXXXXXX"); if (tmpdir == NULL) { set_error (errno, "strdup"); goto done; } if (mkdtemp (tmpdir) == NULL) { set_error (errno, "mkdtemp"); goto free_tmpdir; } if (asprintf (&sockpath, "%s/sock", tmpdir) == -1) { set_error (errno, "asprintf"); goto rmdir_tmpdir; } s = nbd_internal_socket (AF_UNIX, SOCK_STREAM, 0, false); if (s == -1) { set_error (errno, "socket"); goto free_sockpath; } addr.sun_family = AF_UNIX; memcpy (addr.sun_path, sockpath, strlen (sockpath) + 1); if (bind (s, (struct sockaddr *)&addr, sizeof addr) == -1) { set_error (errno, "bind: %s", sockpath); goto close_socket; } if (listen (s, SOMAXCONN) == -1) { set_error (errno, "listen"); goto unlink_sockpath; } if (nbd_internal_execvpe_init (&execvpe_ctx, h->argv.ptr[0], h->argv.len) == -1) { set_error (errno, "nbd_internal_execvpe_init"); goto unlink_sockpath; } num_vars = 0; SACT_VAR_PUSH (sact_var, &num_vars, "LISTEN_PID=", "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", &pid_ofs); SACT_VAR_PUSH (sact_var, &num_vars, "LISTEN_FDS=", "1", NULL); /* Push LISTEN_FDNAMES unconditionally. This ensures we overwrite any * inherited LISTEN_FDNAMES. If "h->sact_name" is NULL, then push * "LISTEN_FDNAMES=unknown"; it will have the same effect on the child process * as unsetting LISTEN_FDNAMES would (with LISTEN_FDS being set to 1): * . */ SACT_VAR_PUSH (sact_var, &num_vars, "LISTEN_FDNAMES=", h->sact_name == NULL ? "unknown" : h->sact_name, NULL); if (prepare_socket_activation_environment (&env, sact_var, num_vars) == -1) /* prepare_socket_activation_environment() calls set_error() internally */ goto uninit_execvpe; pid = fork (); if (pid == -1) { set_error (errno, "fork"); goto empty_env; } if (pid == 0) { /* child - run command */ if (s != FIRST_SOCKET_ACTIVATION_FD) { if (dup2 (s, FIRST_SOCKET_ACTIVATION_FD) == -1) { nbd_internal_fork_safe_perror ("dup2"); _exit (126); } if (close (s) == -1) { nbd_internal_fork_safe_perror ("close"); _exit (126); } } else { /* We must unset CLOEXEC on the fd. (dup2 above does this * implicitly because CLOEXEC is set on the fd, not on the * socket). */ int flags = fcntl (s, F_GETFD, 0); if (flags == -1) { nbd_internal_fork_safe_perror ("fcntl: F_GETFD"); _exit (126); } if (fcntl (s, F_SETFD, (int)(flags & ~(unsigned)FD_CLOEXEC)) == -1) { nbd_internal_fork_safe_perror ("fcntl: F_SETFD"); _exit (126); } } char buf[32]; const char *v = nbd_internal_fork_safe_itoa (getpid (), buf, sizeof buf); NBD_INTERNAL_FORK_SAFE_ASSERT (strlen (v) <= sact_var[pid_ofs].value_len); strcpy (env.ptr[pid_ofs] + sact_var[pid_ofs].prefix_len, v); /* Restore SIGPIPE back to SIG_DFL. */ if (signal (SIGPIPE, SIG_DFL) == SIG_ERR) { nbd_internal_fork_safe_perror ("signal"); _exit (126); } (void)nbd_internal_fork_safe_execvpe (&execvpe_ctx, &h->argv, env.ptr); nbd_internal_fork_safe_perror (h->argv.ptr[0]); if (errno == ENOENT) _exit (127); else _exit (126); } /* Parent -- we're done; commit. */ h->sact_tmpdir = tmpdir; h->sact_sockpath = sockpath; h->pid = pid; h->connaddrlen = sizeof addr; memcpy (&h->connaddr, &addr, h->connaddrlen); next = STATE_CONNECT_START; /* fall through, for releasing the temporaries */ empty_env: string_vector_empty (&env); uninit_execvpe: nbd_internal_execvpe_uninit (&execvpe_ctx); unlink_sockpath: if (next == STATE_DEAD) unlink (sockpath); close_socket: close (s); free_sockpath: if (next == STATE_DEAD) free (sockpath); rmdir_tmpdir: if (next == STATE_DEAD) rmdir (tmpdir); free_tmpdir: if (next == STATE_DEAD) free (tmpdir); done: SET_NEXT_STATE (next); return 0; } #line 1685 "lib/states.c" int nbd_internal_enter_STATE_CONNECT_SA_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_CONNECT_SA_START; r = enter_STATE_CONNECT_SA_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "CONNECT_SA.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* MAGIC.START: Prepare to receive the magic identification from remote */ static int enter_STATE_MAGIC_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-magic.c" h->rbuf = &h->sbuf; h->rlen = 16; SET_NEXT_STATE (STATE_MAGIC_RECV_MAGIC); return 0; } #line 1724 "lib/states.c" int nbd_internal_enter_STATE_MAGIC_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_MAGIC_START; r = enter_STATE_MAGIC_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "MAGIC.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* MAGIC.RECV_MAGIC: Receive initial magic identification from remote */ static int enter_STATE_MAGIC_RECV_MAGIC ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 28 "generator/states-magic.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_MAGIC_CHECK_MAGIC); } return 0; } #line 1764 "lib/states.c" int nbd_internal_enter_STATE_MAGIC_RECV_MAGIC ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_MAGIC_RECV_MAGIC; r = enter_STATE_MAGIC_RECV_MAGIC ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "MAGIC.RECV_MAGIC", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* MAGIC.CHECK_MAGIC: Check magic and version sent by remote */ static int enter_STATE_MAGIC_CHECK_MAGIC ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 35 "generator/states-magic.c" uint64_t version; if (be64toh (h->sbuf.new_handshake.nbdmagic) != NBD_MAGIC) { SET_NEXT_STATE (STATE_DEAD); set_error (0, "handshake: server did not send expected NBD magic"); return 0; } version = be64toh (h->sbuf.new_handshake.version); if (version == NBD_NEW_VERSION) { assert (h->opt_current == 0); h->chunks_received++; SET_NEXT_STATE (STATE_NEWSTYLE_START); } else if (version == NBD_OLD_VERSION) { h->chunks_received++; SET_NEXT_STATE (STATE_OLDSTYLE_START); } else { SET_NEXT_STATE (STATE_DEAD); set_error (0, "handshake: server is not either an oldstyle or " "fixed newstyle NBD server"); return 0; } return 0; } #line 1824 "lib/states.c" int nbd_internal_enter_STATE_MAGIC_CHECK_MAGIC ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_MAGIC_CHECK_MAGIC; r = enter_STATE_MAGIC_CHECK_MAGIC ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "MAGIC.CHECK_MAGIC", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* OLDSTYLE.START: Prepare to receive remainder of oldstyle header */ static int enter_STATE_OLDSTYLE_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-oldstyle.c" /* We've already read the first 16 bytes of the handshake, we must * now read the remainder. */ h->rbuf = &h->sbuf.old_handshake; h->rlen = sizeof h->sbuf.old_handshake; h->rbuf = (char *)h->rbuf + 16; h->rlen -= 16; SET_NEXT_STATE (STATE_OLDSTYLE_RECV_REMAINING); return 0; } #line 1868 "lib/states.c" int nbd_internal_enter_STATE_OLDSTYLE_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_OLDSTYLE_START; r = enter_STATE_OLDSTYLE_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "OLDSTYLE.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* OLDSTYLE.RECV_REMAINING: Receive remainder of oldstyle header */ static int enter_STATE_OLDSTYLE_RECV_REMAINING ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 33 "generator/states-oldstyle.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_OLDSTYLE_CHECK); } return 0; } #line 1908 "lib/states.c" int nbd_internal_enter_STATE_OLDSTYLE_RECV_REMAINING ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_OLDSTYLE_RECV_REMAINING; r = enter_STATE_OLDSTYLE_RECV_REMAINING ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "OLDSTYLE.RECV_REMAINING", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* OLDSTYLE.CHECK: Check oldstyle header */ static int enter_STATE_OLDSTYLE_CHECK ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 40 "generator/states-oldstyle.c" uint64_t exportsize; uint16_t gflags, eflags; /* We already checked the magic and version in MAGIC.CHECK_MAGIC. */ exportsize = be64toh (h->sbuf.old_handshake.exportsize); gflags = be16toh (h->sbuf.old_handshake.gflags); eflags = be16toh (h->sbuf.old_handshake.eflags); /* Server is unable to upgrade to TLS. If h->tls is not 'require' (2) * then we can continue unencrypted. */ if (h->tls == LIBNBD_TLS_REQUIRE) { SET_NEXT_STATE (STATE_DEAD); set_error (ENOTSUP, "handshake: server is oldstyle, " "but handle TLS setting is 'require' (2)"); return 0; } h->gflags = gflags; debug (h, "gflags: 0x%" PRIx16, gflags); if (gflags) { set_error (0, "handshake: oldstyle server should not set gflags"); SET_NEXT_STATE (STATE_DEAD); return 0; } if (nbd_internal_set_size_and_flags (h, exportsize, eflags) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } nbd_internal_set_payload (h); h->protocol = "oldstyle"; SET_NEXT_STATE (STATE_READY); return 0; } #line 1980 "lib/states.c" int nbd_internal_enter_STATE_OLDSTYLE_CHECK ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_OLDSTYLE_CHECK; r = enter_STATE_OLDSTYLE_CHECK ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "OLDSTYLE.CHECK", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.START: Prepare to receive newstyle gflags from remote */ static int enter_STATE_NEWSTYLE_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 114 "generator/states-newstyle.c" if (h->opt_mode) { /* NEWSTYLE can be entered multiple times, from MAGIC.CHECK_MAGIC * (h->opt_current is 0, run through OPT_STRUCTURED_REPLY for * opt_mode, or OPT_GO otherwise) and during various nbd_opt_* * calls during NEGOTIATING (h->opt_current is set, run just the * states needed). Each previous state has informed us what we * still need to do. */ switch (h->opt_current) { case NBD_OPT_GO: case NBD_OPT_INFO: if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXPORT_NAME_START); else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_START); return 0; case NBD_OPT_LIST: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_LIST_START); return 0; case NBD_OPT_ABORT: if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { SET_NEXT_STATE (STATE_DEAD); set_error (ENOTSUP, "handshake: server is not using fixed newstyle"); return 0; } SET_NEXT_STATE (STATE_NEWSTYLE_PREPARE_OPT_ABORT); return 0; case NBD_OPT_LIST_META_CONTEXT: case NBD_OPT_SET_META_CONTEXT: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_START); return 0; case NBD_OPT_STRUCTURED_REPLY: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START); return 0; case NBD_OPT_EXTENDED_HEADERS: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START); return 0; case NBD_OPT_STARTTLS: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_START); return 0; case 0: break; default: abort (); } } assert (h->opt_current == 0); h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.gflags; SET_NEXT_STATE (STATE_NEWSTYLE_RECV_GFLAGS); return 0; } #line 2067 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_START; r = enter_STATE_NEWSTYLE_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.RECV_GFLAGS: Receive newstyle gflags from remote */ static int enter_STATE_NEWSTYLE_RECV_GFLAGS ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 168 "generator/states-newstyle.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_NEWSTYLE_CHECK_GFLAGS); } return 0; } #line 2107 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_RECV_GFLAGS ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_RECV_GFLAGS; r = enter_STATE_NEWSTYLE_RECV_GFLAGS ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.RECV_GFLAGS", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.CHECK_GFLAGS: Check global flags sent by remote */ static int enter_STATE_NEWSTYLE_CHECK_GFLAGS ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 175 "generator/states-newstyle.c" uint32_t cflags; h->gflags &= be16toh (h->sbuf.gflags); if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0 && h->tls == LIBNBD_TLS_REQUIRE) { SET_NEXT_STATE (STATE_DEAD); set_error (ENOTSUP, "handshake: server is not using fixed newstyle, " "but handle TLS setting is 'require' (2)"); return 0; } if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) h->protocol = "newstyle"; else h->protocol = "newstyle-fixed"; cflags = h->gflags; h->sbuf.cflags = htobe32 (cflags); h->wbuf = &h->sbuf; h->wlen = 4; SET_NEXT_STATE (STATE_NEWSTYLE_SEND_CFLAGS); return 0; } #line 2164 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_CHECK_GFLAGS ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_CHECK_GFLAGS; r = enter_STATE_NEWSTYLE_CHECK_GFLAGS ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.CHECK_GFLAGS", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.SEND_CFLAGS: Send newstyle client flags to remote */ static int enter_STATE_NEWSTYLE_SEND_CFLAGS ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 199 "generator/states-newstyle.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: /* Start sending options. */ if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { if (h->opt_mode) SET_NEXT_STATE (STATE_NEGOTIATING); else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXPORT_NAME_START); } else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_START); } return 0; } #line 2213 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_SEND_CFLAGS ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_SEND_CFLAGS; r = enter_STATE_NEWSTYLE_SEND_CFLAGS ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.SEND_CFLAGS", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STARTTLS.START: Try to send newstyle NBD_OPT_STARTTLS to upgrade * to TLS */ static int enter_STATE_NEWSTYLE_OPT_STARTTLS_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-newstyle-opt-starttls.c" assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_STARTTLS) assert (h->opt_mode); else { /* If TLS was not requested we skip this option and go to the next one. */ if (h->tls == LIBNBD_TLS_DISABLE) { SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START); return 0; } assert (CALLBACK_IS_NULL (h->opt_cb.completion)); } h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_STARTTLS); h->sbuf.option.optlen = 0; h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof (h->sbuf.option); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_SEND); return 0; } #line 2270 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STARTTLS_START; r = enter_STATE_NEWSTYLE_OPT_STARTTLS_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STARTTLS.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STARTTLS.SEND: Send newstyle NBD_OPT_STARTTLS to upgrade to TLS */ static int enter_STATE_NEWSTYLE_OPT_STARTTLS_SEND ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 44 "generator/states-newstyle-opt-starttls.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof (h->sbuf.or.option_reply); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY); } return 0; } #line 2314 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_SEND ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STARTTLS_SEND; r = enter_STATE_NEWSTYLE_OPT_STARTTLS_SEND ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STARTTLS.SEND", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STARTTLS.RECV_REPLY: Receive newstyle NBD_OPT_STARTTLS reply */ static int enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 54 "generator/states-newstyle-opt-starttls.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: if (prepare_for_reply_payload (h, NBD_OPT_STARTTLS) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD); } return 0; } #line 2359 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY; r = enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STARTTLS.RECV_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STARTTLS.RECV_REPLY_PAYLOAD: Receive any newstyle * NBD_OPT_STARTTLS reply payload */ static int enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 66 "generator/states-newstyle-opt-starttls.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY); } return 0; } #line 2401 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD; r = enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STARTTLS.RECV_REPLY_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STARTTLS.CHECK_REPLY: Check newstyle NBD_OPT_STARTTLS reply */ static int enter_STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 73 "generator/states-newstyle-opt-starttls.c" uint32_t reply; struct socket *new_sock; int err = ENOTSUP; reply = be32toh (h->sbuf.or.option_reply.reply); switch (reply) { case NBD_REP_ACK: if (h->tls_negotiated) { set_error (EPROTO, "handshake: unable to support server accepting TLS twice"); SET_NEXT_STATE (STATE_DEAD); return 0; } nbd_internal_reset_size_and_flags (h); h->structured_replies = false; h->extended_headers = false; h->meta_valid = false; new_sock = nbd_internal_crypto_create_session (h, h->sock); if (new_sock == NULL) { SET_NEXT_STATE (STATE_DEAD); return 0; } h->sock = new_sock; if (nbd_internal_crypto_is_reading (h)) SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ); else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE); return 0; case NBD_REP_ERR_INVALID: err = EINVAL; /* fallthrough */ default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } /* Server refused to upgrade to TLS. If h->tls is not 'require' (2) * then we can continue unencrypted. */ if (h->tls == LIBNBD_TLS_REQUIRE) { SET_NEXT_STATE (STATE_NEWSTYLE_PREPARE_OPT_ABORT); set_error (ENOTSUP, "handshake: server refused TLS, " "but handle TLS setting is 'require' (2)"); return 0; } debug (h, "server refused TLS (%s)", reply == NBD_REP_ERR_POLICY ? "policy" : reply == NBD_REP_ERR_INVALID ? "invalid request" : "not supported"); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); if (h->opt_current == NBD_OPT_STARTTLS) SET_NEXT_STATE (STATE_NEGOTIATING); else { debug (h, "continuing with unencrypted connection"); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START); } return 0; } return 0; } #line 2498 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY; r = enter_STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STARTTLS.CHECK_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_READ: TLS handshake (reading) */ static int enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 137 "generator/states-newstyle-opt-starttls.c" int r; r = nbd_internal_crypto_handshake (h); if (r == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } if (r == 0) { SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE); return 0; } /* Continue handshake. */ if (nbd_internal_crypto_is_reading (h)) SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ); else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE); return 0; } #line 2550 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ; r = enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_READ", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_WRITE: TLS handshake (writing) */ static int enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 156 "generator/states-newstyle-opt-starttls.c" int r; r = nbd_internal_crypto_handshake (h); if (r == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } if (r == 0) { SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE); return 0; } /* Continue handshake. */ if (nbd_internal_crypto_is_reading (h)) SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ); else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE); return 0; } #line 2602 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE; r = enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_WRITE", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_DONE: TLS handshake complete */ static int enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 175 "generator/states-newstyle-opt-starttls.c" int err = 0; /* Finished handshake. */ h->tls_negotiated = true; nbd_internal_crypto_debug_tls_enabled (h); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); /* Continue with option negotiation. */ if (h->opt_current == NBD_OPT_STARTTLS) SET_NEXT_STATE (STATE_NEGOTIATING); else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START); return 0; } #line 2651 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE; r = enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_DONE", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXTENDED_HEADERS.START: Try to negotiate newstyle * NBD_OPT_EXTENDED_HEADERS */ static int enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-newstyle-opt-extended-headers.c" assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_EXTENDED_HEADERS) assert (h->opt_mode); else { assert (CALLBACK_IS_NULL (h->opt_cb.completion)); if (!h->request_eh || !h->request_sr) { SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START); return 0; } } h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_EXTENDED_HEADERS); h->sbuf.option.optlen = htobe32 (0); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND); return 0; } #line 2707 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START; r = enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXTENDED_HEADERS.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXTENDED_HEADERS.SEND: Send newstyle NBD_OPT_EXTENDED_HEADERS * negotiation request */ static int enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 43 "generator/states-newstyle-opt-extended-headers.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.or.option_reply; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY); } return 0; } #line 2752 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND; r = enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXTENDED_HEADERS.SEND", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY: Receive newstyle * NBD_OPT_EXTENDED_HEADERS option reply */ static int enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 53 "generator/states-newstyle-opt-extended-headers.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: if (prepare_for_reply_payload (h, NBD_OPT_EXTENDED_HEADERS) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD); } return 0; } #line 2799 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY; r = enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY_PAYLOAD: Receive any newstyle * NBD_OPT_EXTENDED_HEADERS reply payload */ static int enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 65 "generator/states-newstyle-opt-extended-headers.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY); } return 0; } #line 2841 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD; r = enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXTENDED_HEADERS.CHECK_REPLY: Check newstyle * NBD_OPT_EXTENDED_HEADERS option reply */ static int enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 72 "generator/states-newstyle-opt-extended-headers.c" uint32_t reply; int err = ENOTSUP; reply = be32toh (h->sbuf.or.option_reply.reply); switch (reply) { case NBD_REP_ACK: debug (h, "negotiated extended headers on this connection"); h->extended_headers = true; /* Extended headers trump structured replies, so skip ahead. */ h->structured_replies = true; err = 0; break; case NBD_REP_ERR_INVALID: err = EINVAL; /* fallthrough */ default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } if (h->extended_headers) debug (h, "extended headers already negotiated"); else debug (h, "extended headers are not supported by this server"); break; } /* Next option. */ if (h->opt_current == NBD_OPT_EXTENDED_HEADERS) SET_NEXT_STATE (STATE_NEGOTIATING); else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); return 0; } #line 2914 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY; r = enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXTENDED_HEADERS.CHECK_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STRUCTURED_REPLY.START: Try to negotiate newstyle * NBD_OPT_STRUCTURED_REPLY */ static int enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-newstyle-opt-structured-reply.c" assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_STRUCTURED_REPLY) assert (h->opt_mode); else { assert (CALLBACK_IS_NULL (h->opt_cb.completion)); if (!h->request_sr || h->structured_replies) { if (h->opt_mode) SET_NEXT_STATE (STATE_NEGOTIATING); else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_START); return 0; } } h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_STRUCTURED_REPLY); h->sbuf.option.optlen = htobe32 (0); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND); return 0; } #line 2973 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START; r = enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STRUCTURED_REPLY.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STRUCTURED_REPLY.SEND: Send newstyle NBD_OPT_STRUCTURED_REPLY * negotiation request */ static int enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 46 "generator/states-newstyle-opt-structured-reply.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.or.option_reply; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY); } return 0; } #line 3018 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND; r = enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STRUCTURED_REPLY.SEND", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY: Receive newstyle * NBD_OPT_STRUCTURED_REPLY option reply */ static int enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 56 "generator/states-newstyle-opt-structured-reply.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: if (prepare_for_reply_payload (h, NBD_OPT_STRUCTURED_REPLY) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD); } return 0; } #line 3065 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY; r = enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY_PAYLOAD: Receive any newstyle * NBD_OPT_STRUCTURED_REPLY reply payload */ static int enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 68 "generator/states-newstyle-opt-structured-reply.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY); } return 0; } #line 3107 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD; r = enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_STRUCTURED_REPLY.CHECK_REPLY: Check newstyle * NBD_OPT_STRUCTURED_REPLY option reply */ static int enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 75 "generator/states-newstyle-opt-structured-reply.c" uint32_t reply; int err = ENOTSUP; reply = be32toh (h->sbuf.or.option_reply.reply); switch (reply) { case NBD_REP_ACK: debug (h, "negotiated structured replies on this connection"); h->structured_replies = true; err = 0; break; case NBD_REP_ERR_INVALID: case NBD_REP_ERR_EXT_HEADER_REQD: err = EINVAL; /* fallthrough */ default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } if (h->structured_replies) debug (h, "structured replies already negotiated"); else debug (h, "structured replies are not supported by this server"); break; } /* Next option. */ if (h->opt_mode) SET_NEXT_STATE (STATE_NEGOTIATING); else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_START); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); return 0; } #line 3179 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY; r = enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_STRUCTURED_REPLY.CHECK_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.START: Try to negotiate newstyle * NBD_OPT_SET_META_CONTEXT */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-newstyle-opt-meta-context.c" size_t i; uint32_t len, opt; /* This state group is reached from: * h->opt_mode == false (h->opt_current == 0): * nbd_connect_*() * -> conditionally use SET, next state OPT_GO for NBD_OPT_GO * h->opt_mode == true (h->opt_current matches calling API): * nbd_opt_info() * -> conditionally use SET, next state OPT_GO for NBD_OPT_INFO * nbd_opt_go() * -> conditionally use SET, next state OPT_GO for NBD_OPT_GO * nbd_opt_list_meta_context() * -> unconditionally use LIST, next state NEGOTIATING * nbd_opt_set_meta_context() * -> unconditionally use SET, next state NEGOTIATING * * If SET is conditional, we skip it if h->request_meta is false, if * structured replies were not negotiated, or if no contexts to request. * SET then manipulates h->meta_contexts, and sets h->meta_valid on * success, while LIST is stateless. * If OPT_GO is later successful, it populates h->exportsize and friends, * and also sets h->meta_valid if h->request_meta but we skipped SET here. * There is a callback if and only if the command is unconditional. */ assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_LIST_META_CONTEXT) { assert (h->opt_mode); assert (CALLBACK_IS_NOT_NULL (h->opt_cb.fn.context)); opt = h->opt_current; } else { if (h->opt_current == NBD_OPT_SET_META_CONTEXT) assert (CALLBACK_IS_NOT_NULL (h->opt_cb.fn.context)); else assert (CALLBACK_IS_NULL (h->opt_cb.fn.context)); opt = NBD_OPT_SET_META_CONTEXT; if (h->request_meta || h->opt_current == opt) { for (i = 0; i < h->meta_contexts.len; ++i) free (h->meta_contexts.ptr[i].name); meta_vector_reset (&h->meta_contexts); h->meta_valid = false; } } if (opt != h->opt_current) { if (!h->request_meta || !h->structured_replies || h->request_meta_contexts.len == 0) { SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_START); return 0; } if (nbd_internal_set_querylist (h, NULL) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } } /* Calculate the length of the option request data. */ len = 4 /* exportname len */ + strlen (h->export_name) + 4 /* nr queries */; for (i = 0; i < h->querylist.len; ++i) len += 4 /* length of query */ + strlen (h->querylist.ptr[i]); h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (opt); h->sbuf.option.optlen = htobe32 (len); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof (h->sbuf.option); h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_SEND); return 0; } #line 3286 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_START; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.SEND: Send newstyle NBD_OPT_SET_META_CONTEXT */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 94 "generator/states-newstyle-opt-meta-context.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->sbuf.len = htobe32 (strlen (h->export_name)); h->wbuf = &h->sbuf.len; h->wlen = sizeof h->sbuf.len; h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN); } return 0; } #line 3331 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_SEND; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.SEND", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAMELEN: Send newstyle * NBD_OPT_SET_META_CONTEXT export name length */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 106 "generator/states-newstyle-opt-meta-context.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->wbuf = h->export_name; h->wlen = strlen (h->export_name); h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME); } return 0; } #line 3377 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAMELEN", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAME: Send newstyle * NBD_OPT_SET_META_CONTEXT export name */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 117 "generator/states-newstyle-opt-meta-context.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->sbuf.nrqueries = htobe32 (h->querylist.len); h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.nrqueries; h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES); } return 0; } #line 3424 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAME", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.SEND_NRQUERIES: Send newstyle * NBD_OPT_SET_META_CONTEXT number of queries */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 129 "generator/states-newstyle-opt-meta-context.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->querynum = 0; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY); } return 0; } #line 3468 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.SEND_NRQUERIES", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.PREPARE_NEXT_QUERY: Prepare to send newstyle * NBD_OPT_SET_META_CONTEXT query */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 138 "generator/states-newstyle-opt-meta-context.c" if (h->querynum >= h->querylist.len) { /* end of list of requested meta contexts */ SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY); return 0; } const char *query = h->querylist.ptr[h->querynum]; h->sbuf.len = htobe32 (strlen (query)); h->wbuf = &h->sbuf.len; h->wlen = sizeof h->sbuf.len; h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN); return 0; } #line 3518 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.PREPARE_NEXT_QUERY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.SEND_QUERYLEN: Send newstyle * NBD_OPT_SET_META_CONTEXT query length */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 153 "generator/states-newstyle-opt-meta-context.c" const char *query = h->querylist.ptr[h->querynum]; switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->wbuf = query; h->wlen = strlen (query); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY); } return 0; } #line 3565 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.SEND_QUERYLEN", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.SEND_QUERY: Send newstyle NBD_OPT_SET_META_CONTEXT * query */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 165 "generator/states-newstyle-opt-meta-context.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->querynum++; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY); } return 0; } #line 3609 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.SEND_QUERY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.PREPARE_FOR_REPLY: Prepare to receive newstyle * NBD_OPT_SET_META_CONTEXT option reply */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 174 "generator/states-newstyle-opt-meta-context.c" h->rbuf = &h->sbuf.or.option_reply; h->rlen = sizeof h->sbuf.or.option_reply; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY); return 0; } #line 3650 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.PREPARE_FOR_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY: Receive newstyle * NBD_OPT_SET_META_CONTEXT option reply */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 180 "generator/states-newstyle-opt-meta-context.c" uint32_t opt; if (h->opt_current == NBD_OPT_LIST_META_CONTEXT) opt = h->opt_current; else opt = NBD_OPT_SET_META_CONTEXT; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: if (prepare_for_reply_payload (h, opt) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD); } return 0; } #line 3704 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY_PAYLOAD: Receive newstyle * NBD_OPT_SET_META_CONTEXT option reply payload */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 199 "generator/states-newstyle-opt-meta-context.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY); } return 0; } #line 3746 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_META_CONTEXT.CHECK_REPLY: Check newstyle * NBD_OPT_SET_META_CONTEXT option reply */ static int enter_STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 206 "generator/states-newstyle-opt-meta-context.c" uint32_t reply; uint32_t len; const size_t maxpayload = sizeof h->sbuf.or.payload.context; struct meta_context meta_context; uint32_t opt; int err = 0; if (h->opt_current == NBD_OPT_LIST_META_CONTEXT) opt = h->opt_current; else opt = NBD_OPT_SET_META_CONTEXT; reply = be32toh (h->sbuf.or.option_reply.reply); len = be32toh (h->sbuf.or.option_reply.replylen); switch (reply) { case NBD_REP_ACK: /* End of list of replies. */ if (opt == NBD_OPT_SET_META_CONTEXT) h->meta_valid = true; if (opt == h->opt_current) { SET_NEXT_STATE (STATE_NEGOTIATING); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); } else SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_START); break; case NBD_REP_META_CONTEXT: /* A context. */ if (len > maxpayload) debug (h, "skipping too large meta context"); else { assert (len > sizeof h->sbuf.or.payload.context.context.context_id); meta_context.context_id = be32toh (h->sbuf.or.payload.context.context.context_id); /* String payload is not NUL-terminated. */ meta_context.name = strndup (h->sbuf.or.payload.context.str, len - sizeof meta_context.context_id); if (meta_context.name == NULL) { set_error (errno, "strdup"); SET_NEXT_STATE (STATE_DEAD); return 0; } debug (h, "negotiated %s with context ID %" PRIu32, meta_context.name, meta_context.context_id); if (CALLBACK_IS_NOT_NULL (h->opt_cb.fn.context)) CALL_CALLBACK (h->opt_cb.fn.context, meta_context.name); if (opt == NBD_OPT_LIST_META_CONTEXT) free (meta_context.name); else if (meta_vector_append (&h->meta_contexts, meta_context) == -1) { set_error (errno, "realloc"); free (meta_context.name); SET_NEXT_STATE (STATE_DEAD); return 0; } } SET_NEXT_STATE (STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY); break; default: /* Anything else is an error, report it for explicit LIST/SET, ignore it * for automatic progress (nbd_connect_*, nbd_opt_info, nbd_opt_go). */ if (handle_reply_error (h) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } if (opt == h->opt_current) { /* XXX Should we decode specific expected errors, like * REP_ERR_UNKNOWN to ENOENT or REP_ERR_TOO_BIG to ERANGE? */ err = ENOTSUP; set_error (err, "unexpected response, possibly the server does not " "support meta contexts"); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); SET_NEXT_STATE (STATE_NEGOTIATING); } else { /* Treat ignored error as success only if list is still empty */ if (opt == NBD_OPT_SET_META_CONTEXT) h->meta_valid = h->meta_contexts.len == 0; debug (h, "handshake: ignoring unexpected error from " "NBD_OPT_SET_META_CONTEXT (%" PRIu32 ")", reply); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_START); } break; } return 0; } #line 3870 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY; r = enter_STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_META_CONTEXT.CHECK_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_GO.START: Try to send newstyle NBD_OPT_GO to end handshake */ static int enter_STATE_NEWSTYLE_OPT_GO_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-newstyle-opt-go.c" uint16_t nrinfos = 0; nbd_internal_reset_size_and_flags (h); if (h->request_block_size) nrinfos++; if (h->full_info) nrinfos += 2; assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_INFO) assert (h->opt_mode); else if (!h->opt_current) { assert (!h->opt_mode); assert (CALLBACK_IS_NULL (h->opt_cb.completion)); h->opt_current = NBD_OPT_GO; } h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (h->opt_current); h->sbuf.option.optlen = htobe32 (/* exportnamelen */ 4 + strlen (h->export_name) + sizeof nrinfos + 2 * nrinfos); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_SEND); return 0; } #line 3932 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_GO_START; r = enter_STATE_NEWSTYLE_OPT_GO_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_GO.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_GO.SEND: Send newstyle NBD_OPT_GO to end handshake */ static int enter_STATE_NEWSTYLE_OPT_GO_SEND ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 51 "generator/states-newstyle-opt-go.c" const uint32_t exportnamelen = strlen (h->export_name); switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->sbuf.len = htobe32 (exportnamelen); h->wbuf = &h->sbuf; h->wlen = 4; h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN); } return 0; } #line 3979 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_GO_SEND; r = enter_STATE_NEWSTYLE_OPT_GO_SEND ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_GO.SEND", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_GO.SEND_EXPORTNAMELEN: Send newstyle NBD_OPT_GO export name * length */ static int enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 65 "generator/states-newstyle-opt-go.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->wbuf = h->export_name; h->wlen = strlen (h->export_name); h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_SEND_EXPORT); } return 0; } #line 4025 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN; r = enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_GO.SEND_EXPORTNAMELEN", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_GO.SEND_EXPORT: Send newstyle NBD_OPT_GO export name */ static int enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORT ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 76 "generator/states-newstyle-opt-go.c" uint16_t nrinfos = 0; if (h->request_block_size) nrinfos++; if (h->full_info) nrinfos += 2; switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->sbuf.nrinfos = htobe16 (nrinfos); h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.nrinfos; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS); } return 0; } #line 4076 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORT ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_GO_SEND_EXPORT; r = enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORT ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_GO.SEND_EXPORT", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_GO.SEND_NRINFOS: Send newstyle NBD_OPT_GO number of infos */ static int enter_STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 94 "generator/states-newstyle-opt-go.c" uint16_t nrinfos = 0; switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: if (h->request_block_size) h->sbuf.info[nrinfos++] = htobe16 (NBD_INFO_BLOCK_SIZE); if (h->full_info) { h->sbuf.info[nrinfos++] = htobe16 (NBD_INFO_NAME); h->sbuf.info[nrinfos++] = htobe16 (NBD_INFO_DESCRIPTION); } h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.info[0] * nrinfos; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_SEND_INFO); } return 0; } #line 4127 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS; r = enter_STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_GO.SEND_NRINFOS", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_GO.SEND_INFO: Send newstyle NBD_OPT_GO request for * NBD_INFO_BLOCK_SIZE */ static int enter_STATE_NEWSTYLE_OPT_GO_SEND_INFO ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 112 "generator/states-newstyle-opt-go.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.or.option_reply; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_RECV_REPLY); } return 0; } #line 4172 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_INFO ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_GO_SEND_INFO; r = enter_STATE_NEWSTYLE_OPT_GO_SEND_INFO ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_GO.SEND_INFO", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_GO.RECV_REPLY: Receive newstyle NBD_OPT_GO reply */ static int enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 122 "generator/states-newstyle-opt-go.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: if (prepare_for_reply_payload (h, h->opt_current) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD); } return 0; } #line 4217 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_GO_RECV_REPLY; r = enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_GO.RECV_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_GO.RECV_REPLY_PAYLOAD: Receive newstyle NBD_OPT_GO reply payload */ static int enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 134 "generator/states-newstyle-opt-go.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_CHECK_REPLY); } return 0; } #line 4258 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD; r = enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_GO.RECV_REPLY_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_GO.CHECK_REPLY: Check newstyle NBD_OPT_GO reply */ static int enter_STATE_NEWSTYLE_OPT_GO_CHECK_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 141 "generator/states-newstyle-opt-go.c" uint32_t reply; uint32_t len; const size_t maxpayload = sizeof h->sbuf.or.payload; int err; reply = be32toh (h->sbuf.or.option_reply.reply); len = be32toh (h->sbuf.or.option_reply.replylen); switch (reply) { case NBD_REP_INFO: if (len > maxpayload) { /* See prepare_for_reply_payload, used in RECV_REPLY */ assert (h->rbuf == NULL); debug (h, "skipping large NBD_REP_INFO"); } else { uint16_t info; uint64_t exportsize; uint16_t eflags; uint32_t min, pref, max; assert (len >= sizeof h->sbuf.or.payload.export.info); info = be16toh (h->sbuf.or.payload.export.info); switch (info) { case NBD_INFO_EXPORT: if (len != sizeof h->sbuf.or.payload.export) { SET_NEXT_STATE (STATE_DEAD); set_error (0, "handshake: incorrect NBD_INFO_EXPORT option reply " "length"); return 0; } exportsize = be64toh (h->sbuf.or.payload.export.exportsize); eflags = be16toh (h->sbuf.or.payload.export.eflags); if (nbd_internal_set_size_and_flags (h, exportsize, eflags) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } break; case NBD_INFO_BLOCK_SIZE: if (len != sizeof h->sbuf.or.payload.block_size) { SET_NEXT_STATE (STATE_DEAD); set_error (0, "handshake: incorrect NBD_INFO_BLOCK_SIZE option " "reply length"); return 0; } min = be32toh (h->sbuf.or.payload.block_size.minimum); pref = be32toh (h->sbuf.or.payload.block_size.preferred); max = be32toh (h->sbuf.or.payload.block_size.maximum); if (nbd_internal_set_block_size (h, min, pref, max) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } break; case NBD_INFO_NAME: if (len > sizeof h->sbuf.or.payload.name_desc.info + NBD_MAX_STRING || len < sizeof h->sbuf.or.payload.name_desc.info) { SET_NEXT_STATE (STATE_DEAD); set_error (0, "handshake: incorrect NBD_INFO_NAME option reply " "length"); return 0; } free (h->canonical_name); h->canonical_name = strndup (h->sbuf.or.payload.name_desc.str, len - 2); if (h->canonical_name == NULL) { SET_NEXT_STATE (STATE_DEAD); set_error (errno, "strndup"); return 0; } break; case NBD_INFO_DESCRIPTION: if (len > sizeof h->sbuf.or.payload.name_desc.info + NBD_MAX_STRING || len < sizeof h->sbuf.or.payload.name_desc.info) { SET_NEXT_STATE (STATE_DEAD); set_error (0, "handshake: incorrect NBD_INFO_DESCRIPTION option " "reply length"); return 0; } free (h->description); h->description = strndup (h->sbuf.or.payload.name_desc.str, len - 2); if (h->description == NULL) { SET_NEXT_STATE (STATE_DEAD); set_error (errno, "strndup"); return 0; } break; default: debug (h, "skipping unknown NBD_REP_INFO type %d", be16toh (h->sbuf.or.payload.export.info)); break; } } /* Server is allowed to send any number of NBD_REP_INFO, read next one. */ h->rbuf = &h->sbuf; h->rlen = sizeof (h->sbuf.or.option_reply); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_GO_RECV_REPLY); return 0; case NBD_REP_ERR_UNSUP: if (h->opt_current == NBD_OPT_GO) { debug (h, "server is confused by NBD_OPT_GO, continuing anyway"); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXPORT_NAME_START); return 0; } /* fallthrough */ default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } /* Decode expected known errors into a nicer string */ switch (reply) { case NBD_REP_ERR_UNSUP: assert (h->opt_current == NBD_OPT_INFO); set_error (ENOTSUP, "handshake: server lacks NBD_OPT_INFO support"); break; case NBD_REP_ERR_POLICY: case NBD_REP_ERR_PLATFORM: set_error (0, "handshake: server policy prevents NBD_OPT_GO"); break; case NBD_REP_ERR_INVALID: case NBD_REP_ERR_TOO_BIG: set_error (EINVAL, "handshake: server rejected NBD_OPT_GO as invalid"); break; case NBD_REP_ERR_TLS_REQD: set_error (ENOTSUP, "handshake: server requires TLS encryption first"); break; case NBD_REP_ERR_UNKNOWN: set_error (ENOENT, "handshake: server has no export named '%s'", h->export_name); break; case NBD_REP_ERR_SHUTDOWN: set_error (ESHUTDOWN, "handshake: server is shutting down"); break; case NBD_REP_ERR_BLOCK_SIZE_REQD: set_error (EINVAL, "handshake: server requires specific block sizes"); break; default: set_error (0, "handshake: unknown reply from NBD_OPT_GO: 0x%" PRIx32, reply); } nbd_internal_reset_size_and_flags (h); h->meta_valid = false; err = nbd_get_errno () ? : ENOTSUP; break; case NBD_REP_ACK: nbd_internal_set_payload (h); err = 0; break; } if (err == 0 && h->opt_current == NBD_OPT_GO) SET_NEXT_STATE (STATE_NEWSTYLE_FINISHED); else if (h->opt_mode) SET_NEXT_STATE (STATE_NEGOTIATING); else SET_NEXT_STATE (STATE_NEWSTYLE_PREPARE_OPT_ABORT); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); return 0; } #line 4451 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_GO_CHECK_REPLY; r = enter_STATE_NEWSTYLE_OPT_GO_CHECK_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_GO.CHECK_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXPORT_NAME.START: Try to send newstyle NBD_OPT_EXPORT_NAME to * end handshake */ static int enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-newstyle-opt-export-name.c" h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_EXPORT_NAME); h->sbuf.option.optlen = htobe32 (strlen (h->export_name)); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND); return 0; } #line 4497 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXPORT_NAME_START; r = enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXPORT_NAME.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXPORT_NAME.SEND: Send newstyle NBD_OPT_EXPORT_NAME to end * handshake */ static int enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 33 "generator/states-newstyle-opt-export-name.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->wbuf = h->export_name; h->wlen = strlen (h->export_name); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT); } return 0; } #line 4542 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND; r = enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXPORT_NAME.SEND", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXPORT_NAME.SEND_EXPORT: Send newstyle NBD_OPT_EXPORT_NAME * export name */ static int enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 43 "generator/states-newstyle-opt-export-name.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.export_name_reply; if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_NO_ZEROES) != 0) h->rlen -= sizeof h->sbuf.export_name_reply.zeroes; SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY); } return 0; } #line 4589 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT; r = enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXPORT_NAME.SEND_EXPORT", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXPORT_NAME.RECV_REPLY: Receive newstyle NBD_OPT_EXPORT_NAME * reply */ static int enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 55 "generator/states-newstyle-opt-export-name.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY); } return 0; } #line 4631 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY; r = enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXPORT_NAME.RECV_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_EXPORT_NAME.CHECK_REPLY: Check newstyle NBD_OPT_EXPORT_NAME * reply */ static int enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 62 "generator/states-newstyle-opt-export-name.c" uint64_t exportsize; uint16_t eflags; int err = 0; exportsize = be64toh (h->sbuf.export_name_reply.exportsize); eflags = be16toh (h->sbuf.export_name_reply.eflags); if (nbd_internal_set_size_and_flags (h, exportsize, eflags) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } nbd_internal_set_payload (h); SET_NEXT_STATE (STATE_NEWSTYLE_FINISHED); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); return 0; } #line 4683 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY; r = enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_EXPORT_NAME.CHECK_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_LIST.START: Start listing exports if in list mode. */ static int enter_STATE_NEWSTYLE_OPT_LIST_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 25 "generator/states-newstyle-opt-list.c" assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); assert (h->opt_mode && h->opt_current == NBD_OPT_LIST); assert (CALLBACK_IS_NOT_NULL (h->opt_cb.fn.list)); h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_LIST); h->sbuf.option.optlen = 0; h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof (h->sbuf.option); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_LIST_SEND); return 0; } #line 4729 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_LIST_START; r = enter_STATE_NEWSTYLE_OPT_LIST_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_LIST.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_LIST.SEND: Send newstyle NBD_OPT_LIST to begin listing exports */ static int enter_STATE_NEWSTYLE_OPT_LIST_SEND ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 38 "generator/states-newstyle-opt-list.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof (h->sbuf.or.option_reply); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_LIST_RECV_REPLY); } return 0; } #line 4773 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_SEND ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_LIST_SEND; r = enter_STATE_NEWSTYLE_OPT_LIST_SEND ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_LIST.SEND", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_LIST.RECV_REPLY: Receive NBD_REP_SERVER reply */ static int enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 48 "generator/states-newstyle-opt-list.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: if (prepare_for_reply_payload (h, NBD_OPT_LIST) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } SET_NEXT_STATE (STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD); } return 0; } #line 4818 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_LIST_RECV_REPLY; r = enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_LIST.RECV_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_LIST.RECV_REPLY_PAYLOAD: Receive NBD_REP_SERVER reply payload */ static int enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 60 "generator/states-newstyle-opt-list.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY); } return 0; } #line 4858 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD; r = enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_LIST.RECV_REPLY_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.OPT_LIST.CHECK_REPLY: Check NBD_REP_SERVER reply */ static int enter_STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 67 "generator/states-newstyle-opt-list.c" const size_t maxpayload = sizeof h->sbuf.or.payload.server; uint32_t reply; uint32_t len; char *tmp; int err; reply = be32toh (h->sbuf.or.option_reply.reply); len = be32toh (h->sbuf.or.option_reply.replylen); switch (reply) { case NBD_REP_SERVER: /* Got one export. */ if (len >= maxpayload) debug (h, "skipping too large export name reply"); else { uint32_t elen; const char *name; const char *desc; /* server.str is oversized for trailing NUL byte convenience */ h->sbuf.or.payload.server.str[len - 4] = '\0'; elen = be32toh (h->sbuf.or.payload.server.server.export_name_len); if (elen > len - 4 || elen > NBD_MAX_STRING || len - 4 - elen > NBD_MAX_STRING) { set_error (0, "invalid export length"); SET_NEXT_STATE (STATE_DEAD); return 0; } if (elen == len + 4) { tmp = NULL; name = h->sbuf.or.payload.server.str; desc = ""; } else { tmp = strndup (h->sbuf.or.payload.server.str, elen); if (tmp == NULL) { set_error (errno, "strdup"); SET_NEXT_STATE (STATE_DEAD); return 0; } name = tmp; desc = h->sbuf.or.payload.server.str + elen; } CALL_CALLBACK (h->opt_cb.fn.list, name, desc); free (tmp); } /* Wait for more replies. */ h->rbuf = &h->sbuf; h->rlen = sizeof (h->sbuf.or.option_reply); SET_NEXT_STATE (STATE_NEWSTYLE_OPT_LIST_RECV_REPLY); return 0; case NBD_REP_ACK: /* Finished receiving the list. */ err = 0; break; default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (STATE_DEAD); return 0; } err = ENOTSUP; set_error (err, "unexpected response, possibly the server does not " "support listing exports"); break; } CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); SET_NEXT_STATE (STATE_NEGOTIATING); return 0; } #line 4965 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY; r = enter_STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.OPT_LIST.CHECK_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.PREPARE_OPT_ABORT: Prepare to send NBD_OPT_ABORT */ static int enter_STATE_NEWSTYLE_PREPARE_OPT_ABORT ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 215 "generator/states-newstyle.c" assert ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) != 0); h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_ABORT); h->sbuf.option.optlen = htobe32 (0); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; SET_NEXT_STATE (STATE_NEWSTYLE_SEND_OPT_ABORT); return 0; } #line 5009 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_PREPARE_OPT_ABORT ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_PREPARE_OPT_ABORT; r = enter_STATE_NEWSTYLE_PREPARE_OPT_ABORT ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.PREPARE_OPT_ABORT", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.SEND_OPT_ABORT: Send NBD_OPT_ABORT to end negotiation */ static int enter_STATE_NEWSTYLE_SEND_OPT_ABORT ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 226 "generator/states-newstyle.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN); } return 0; } #line 5050 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_SEND_OPT_ABORT ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_SEND_OPT_ABORT; r = enter_STATE_NEWSTYLE_SEND_OPT_ABORT ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.SEND_OPT_ABORT", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.SEND_OPTION_SHUTDOWN: Sending write shutdown notification to the * remote server */ static int enter_STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 234 "generator/states-newstyle.c" /* We don't care if the server replies to NBD_OPT_ABORT. However, * unless we are in opt mode, we want to preserve the error message * from a failed OPT_GO by moving to DEAD instead. */ if (h->sock->ops->shut_writes (h, h->sock)) { if (h->opt_mode) SET_NEXT_STATE (STATE_CLOSED); else SET_NEXT_STATE (STATE_DEAD); } return 0; } #line 5098 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN; r = enter_STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.SEND_OPTION_SHUTDOWN", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEWSTYLE.FINISHED: Finish off newstyle negotiation */ static int enter_STATE_NEWSTYLE_FINISHED ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 247 "generator/states-newstyle.c" SET_NEXT_STATE (STATE_READY); return 0; } #line 5135 "lib/states.c" int nbd_internal_enter_STATE_NEWSTYLE_FINISHED ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEWSTYLE_FINISHED; r = enter_STATE_NEWSTYLE_FINISHED ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEWSTYLE.FINISHED", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* NEGOTIATING: Connection is ready to negotiate an NBD option */ static int enter_STATE_NEGOTIATING ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { return 0; } #line 5168 "lib/states.c" int nbd_internal_enter_STATE_NEGOTIATING ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_NEGOTIATING; r = enter_STATE_NEGOTIATING ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "NEGOTIATING", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* READY: Connection is ready to process NBD commands */ static int enter_STATE_READY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 183 "generator/states.c" if (h->cmds_to_issue) SET_NEXT_STATE (STATE_ISSUE_COMMAND_START); else { assert (h->sock); if (h->sock->ops->pending && h->sock->ops->pending (h->sock)) SET_NEXT_STATE (STATE_REPLY_START); } return 0; } #line 5211 "lib/states.c" int nbd_internal_enter_STATE_READY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_READY; r = enter_STATE_READY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "READY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* ISSUE_COMMAND.START: Begin issuing a command to the remote server */ static int enter_STATE_ISSUE_COMMAND_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-issue-command.c" struct command *cmd; assert (h->cmds_to_issue != NULL); cmd = h->cmds_to_issue; /* Were we interrupted by reading a reply to an earlier command? If * so, we can only get back here after a non-blocking jaunt through * the REPLY engine, which means we are unlikely to be unblocked for * writes yet; we want to advance back to the correct state but * without trying a send_from_wbuf that will likely return 1. */ if (h->in_write_shutdown) SET_NEXT_STATE_AND_BLOCK (STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN); else if (h->wlen) { if (h->in_write_payload) SET_NEXT_STATE_AND_BLOCK (STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD); else SET_NEXT_STATE_AND_BLOCK (STATE_ISSUE_COMMAND_SEND_REQUEST); return 0; } /* These fields are coincident between req.compact and req.extended */ h->req.compact.flags = htobe16 (cmd->flags); h->req.compact.type = htobe16 (cmd->type); h->req.compact.cookie = htobe64 (cmd->cookie); h->req.compact.offset = htobe64 (cmd->offset); if (h->extended_headers) { h->req.extended.magic = htobe32 (NBD_EXTENDED_REQUEST_MAGIC); h->req.extended.count = htobe64 (cmd->count); h->wlen = sizeof (h->req.extended); } else { assert (cmd->count <= UINT32_MAX); h->req.compact.magic = htobe32 (NBD_REQUEST_MAGIC); h->req.compact.count = htobe32 (cmd->count); h->wlen = sizeof (h->req.compact); } h->chunks_sent++; h->wbuf = &h->req; if (cmd->type == NBD_CMD_WRITE || cmd->next) h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_ISSUE_COMMAND_SEND_REQUEST); return 0; } #line 5289 "lib/states.c" int nbd_internal_enter_STATE_ISSUE_COMMAND_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_ISSUE_COMMAND_START; r = enter_STATE_ISSUE_COMMAND_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "ISSUE_COMMAND.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* ISSUE_COMMAND.SEND_REQUEST: Sending a request to the remote server */ static int enter_STATE_ISSUE_COMMAND_SEND_REQUEST ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 67 "generator/states-issue-command.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD); } return 0; } #line 5329 "lib/states.c" int nbd_internal_enter_STATE_ISSUE_COMMAND_SEND_REQUEST ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_ISSUE_COMMAND_SEND_REQUEST; r = enter_STATE_ISSUE_COMMAND_SEND_REQUEST ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "ISSUE_COMMAND.SEND_REQUEST", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* ISSUE_COMMAND.PAUSE_SEND_REQUEST: Interrupt send request to receive an * earlier command's reply */ static int enter_STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 74 "generator/states-issue-command.c" assert (h->wlen); assert (h->cmds_to_issue != NULL); h->in_write_payload = false; SET_NEXT_STATE (STATE_REPLY_START); return 0; } #line 5371 "lib/states.c" int nbd_internal_enter_STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST; r = enter_STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "ISSUE_COMMAND.PAUSE_SEND_REQUEST", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* ISSUE_COMMAND.PREPARE_WRITE_PAYLOAD: Prepare the write payload to send to the * remote server */ static int enter_STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 81 "generator/states-issue-command.c" struct command *cmd; assert (h->cmds_to_issue != NULL); cmd = h->cmds_to_issue; assert (cmd->cookie == be64toh (h->req.compact.cookie)); if (cmd->type == NBD_CMD_WRITE || (h->extended_headers && cmd->type == NBD_CMD_BLOCK_STATUS && cmd->flags & NBD_CMD_FLAG_PAYLOAD_LEN)) { h->wbuf = cmd->data; h->wlen = cmd->count; if (cmd->next && cmd->count < 64 * 1024) h->wflags = MSG_MORE; SET_NEXT_STATE (STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD); } else if (cmd->type == NBD_CMD_DISC) { h->in_write_shutdown = true; SET_NEXT_STATE (STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN); } else SET_NEXT_STATE (STATE_ISSUE_COMMAND_FINISH); return 0; } #line 5429 "lib/states.c" int nbd_internal_enter_STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD; r = enter_STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "ISSUE_COMMAND.PREPARE_WRITE_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* ISSUE_COMMAND.SEND_WRITE_PAYLOAD: Sending the write payload to the remote * server */ static int enter_STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 104 "generator/states-issue-command.c" switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 0: SET_NEXT_STATE (STATE_ISSUE_COMMAND_FINISH); } return 0; } #line 5471 "lib/states.c" int nbd_internal_enter_STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD; r = enter_STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "ISSUE_COMMAND.SEND_WRITE_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* ISSUE_COMMAND.PAUSE_WRITE_PAYLOAD: Interrupt write payload to receive an * earlier command's reply */ static int enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 111 "generator/states-issue-command.c" assert (h->wlen); assert (h->cmds_to_issue != NULL); h->in_write_payload = true; SET_NEXT_STATE (STATE_REPLY_START); return 0; } #line 5513 "lib/states.c" int nbd_internal_enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD; r = enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "ISSUE_COMMAND.PAUSE_WRITE_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* ISSUE_COMMAND.SEND_WRITE_SHUTDOWN: Sending write shutdown notification to the * remote server */ static int enter_STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 118 "generator/states-issue-command.c" if (h->sock->ops->shut_writes (h, h->sock)) SET_NEXT_STATE (STATE_ISSUE_COMMAND_FINISH); return 0; } #line 5553 "lib/states.c" int nbd_internal_enter_STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN; r = enter_STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "ISSUE_COMMAND.SEND_WRITE_SHUTDOWN", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* ISSUE_COMMAND.PAUSE_WRITE_SHUTDOWN: Interrupt write shutdown to receive an * earlier command's reply */ static int enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 123 "generator/states-issue-command.c" assert (h->in_write_shutdown); SET_NEXT_STATE (STATE_REPLY_START); return 0; } #line 5593 "lib/states.c" int nbd_internal_enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN; r = enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "ISSUE_COMMAND.PAUSE_WRITE_SHUTDOWN", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* ISSUE_COMMAND.FINISH: Finish issuing a command */ static int enter_STATE_ISSUE_COMMAND_FINISH ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 128 "generator/states-issue-command.c" struct command *cmd; assert (!h->wlen); assert (h->cmds_to_issue != NULL); cmd = h->cmds_to_issue; assert (cmd->cookie == be64toh (h->req.compact.cookie)); h->cmds_to_issue = cmd->next; if (h->cmds_to_issue_tail == cmd) h->cmds_to_issue_tail = NULL; cmd->next = h->cmds_in_flight; h->cmds_in_flight = cmd; SET_NEXT_STATE (STATE_READY); return 0; } #line 5641 "lib/states.c" int nbd_internal_enter_STATE_ISSUE_COMMAND_FINISH ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_ISSUE_COMMAND_FINISH; r = enter_STATE_ISSUE_COMMAND_FINISH ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "ISSUE_COMMAND.FINISH", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.START: Prepare to receive a reply from the remote server */ static int enter_STATE_REPLY_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 49 "generator/states-reply.c" /* If rlen is non-zero, we are resuming an earlier reply cycle. */ if (h->rlen > 0) { if (h->reply_state != STATE_START) { assert (nbd_internal_is_state_processing (h->reply_state)); SET_NEXT_STATE (h->reply_state); h->reply_state = STATE_START; } else SET_NEXT_STATE (STATE_REPLY_RECV_REPLY); return 0; } /* This state is entered when a read notification is received in the * READY state. Therefore we know the socket is readable here. * Reading a zero length now would indicate that the socket has been * closed by the server and so we should jump to the CLOSED state. * However recv_into_rbuf will fail in this case, so test it as a * special case. */ ssize_t r; /* With extended headers, there is only one size to read, so we can * do it all in one syscall. But for older structured replies, we * don't know if we have a simple or structured reply until we read * the magic number, requiring a two-part read with * CHECK_REPLY_MAGIC below. This works because the structured_reply * header is larger, and because the last member of a simple reply, * cookie, is coincident between all three structs (intentional * design decisions in the NBD spec when structured and extended * replies were added). */ ASSERT_MEMBER_ALIAS (union reply_header, simple.magic, magic); ASSERT_MEMBER_ALIAS (union reply_header, simple.cookie, cookie); ASSERT_MEMBER_ALIAS (union reply_header, structured.magic, magic); ASSERT_MEMBER_ALIAS (union reply_header, structured.cookie, cookie); ASSERT_MEMBER_ALIAS (union reply_header, extended.magic, magic); ASSERT_MEMBER_ALIAS (union reply_header, extended.cookie, cookie); assert (h->reply_cmd == NULL); assert (h->rlen == 0); h->rbuf = &h->sbuf.reply.hdr; if (h->extended_headers) h->rlen = sizeof h->sbuf.reply.hdr.extended; else h->rlen = sizeof h->sbuf.reply.hdr.simple; r = h->sock->ops->recv (h, h->sock, h->rbuf, h->rlen); if (r == -1) { /* In theory this should never happen because when we enter this * state we should have notification that the socket is ready to * read. However it can in fact happen when using TLS in * conjunction with a slow, remote server. If it does happen, * ignore it - we will reenter this same state again next time the * socket is ready to read. */ if (errno == EAGAIN || errno == EWOULDBLOCK) return 0; /* sock->ops->recv called set_error already. */ SET_NEXT_STATE (STATE_DEAD); return 0; } if (r == 0) { SET_NEXT_STATE (STATE_CLOSED); return 0; } #ifdef DUMP_PACKETS nbd_internal_hexdump (h->rbuf, r, stderr); #endif h->bytes_received += r; h->rbuf = (char *)h->rbuf + r; h->rlen -= r; SET_NEXT_STATE (STATE_REPLY_RECV_REPLY); return 0; } #line 5751 "lib/states.c" int nbd_internal_enter_STATE_REPLY_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_START; r = enter_STATE_REPLY_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.RECV_REPLY: Receive a reply from the remote server */ static int enter_STATE_REPLY_RECV_REPLY ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 126 "generator/states-reply.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: SET_NEXT_STATE (STATE_READY); /* Special case: if we have a short read, but got at least far * enough to decode the magic number, we can check if the server * is matching our expectations. This lets us avoid deadlocking if * we are blocked waiting for a 32-byte extended reply, while a * buggy server only sent a shorter simple or structured reply. * Magic number checks here must be repeated in CHECK_REPLY_MAGIC, * since we do not always encounter a short read. */ if (h->extended_headers && (char *)h->rbuf >= (char *)&h->sbuf.reply.hdr + sizeof h->sbuf.reply.hdr.magic) { uint32_t magic = be32toh (h->sbuf.reply.hdr.magic); if (magic != NBD_EXTENDED_REPLY_MAGIC) { SET_NEXT_STATE (STATE_DEAD); /* We've probably lost synchronization. */ set_error (0, "invalid or unexpected reply magic 0x%" PRIx32, magic); } } return 0; case 0: SET_NEXT_STATE (STATE_REPLY_CHECK_REPLY_MAGIC); } return 0; } #line 5810 "lib/states.c" int nbd_internal_enter_STATE_REPLY_RECV_REPLY ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_RECV_REPLY; r = enter_STATE_REPLY_RECV_REPLY ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.RECV_REPLY", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHECK_REPLY_MAGIC: Check if the reply has expected magic */ static int enter_STATE_REPLY_CHECK_REPLY_MAGIC ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 152 "generator/states-reply.c" struct command *cmd; uint32_t magic; uint64_t cookie; magic = be32toh (h->sbuf.reply.hdr.magic); switch (magic) { case NBD_SIMPLE_REPLY_MAGIC: if (h->extended_headers) /* Server is non-compliant, and we've already read more bytes * than a simple header contains; no recovery possible */ goto invalid; /* All other payload checks handled in the simple payload engine */ SET_NEXT_STATE (STATE_REPLY_SIMPLE_REPLY_START); break; case NBD_STRUCTURED_REPLY_MAGIC: if (h->extended_headers) /* Server is non-compliant, and we've already read more bytes * than a structured header contains; no recovery possible */ goto invalid; /* We've only read the bytes that fill hdr.simple. But * hdr.structured is longer, so prepare to read the remaining * bytes. We depend on the memory aliasing in union sbuf to * overlay the two reply types. */ STATIC_ASSERT (sizeof h->sbuf.reply.hdr.simple == offsetof (struct nbd_structured_reply, length), simple_structured_overlap); assert (h->rbuf == (char *)&h->sbuf + sizeof h->sbuf.reply.hdr.simple); h->rlen = sizeof h->sbuf.reply.hdr.structured; h->rlen -= sizeof h->sbuf.reply.hdr.simple; SET_NEXT_STATE (STATE_REPLY_RECV_STRUCTURED_REMAINING); break; case NBD_EXTENDED_REPLY_MAGIC: if (!h->extended_headers) /* Server is non-compliant. We could continue reading bytes up * to the length of an extended reply to regain sync, but old * servers are unlikely to send this magic, so it's just as easy * to punt. */ goto invalid; /* All other payload checks handled in the chunk payload engine */ SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_START); break; default: goto invalid; } /* NB: This works for all three reply types, even though we haven't * finished reading a structured header yet, because the cookie is * stored at the same offset. See the ASSERT_MEMBER_ALIAS above in * state REPLY.START that confirmed this. */ h->chunks_received++; cookie = be64toh (h->sbuf.reply.hdr.cookie); /* Find the command amongst the commands in flight. If the server sends * a reply for an unknown cookie, FINISH will diagnose that later. */ for (cmd = h->cmds_in_flight; cmd != NULL; cmd = cmd->next) { if (cmd->cookie == cookie) break; } h->reply_cmd = cmd; return 0; invalid: SET_NEXT_STATE (STATE_DEAD); /* We've probably lost synchronization. */ set_error (0, "invalid or unexpected reply magic 0x%" PRIx32, magic); #if 0 /* uncomment to see desynchronized data */ nbd_internal_hexdump (&h->sbuf.reply.hdr.simple, sizeof (h->sbuf.reply.hdr.simple), stderr); #endif return 0; } #line 5926 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHECK_REPLY_MAGIC ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHECK_REPLY_MAGIC; r = enter_STATE_REPLY_CHECK_REPLY_MAGIC ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHECK_REPLY_MAGIC", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.RECV_STRUCTURED_REMAINING: Receiving the remaining part of a structured * reply header */ static int enter_STATE_REPLY_RECV_STRUCTURED_REMAINING ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 235 "generator/states-reply.c" switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_START); } return 0; } #line 5972 "lib/states.c" int nbd_internal_enter_STATE_REPLY_RECV_STRUCTURED_REMAINING ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_RECV_STRUCTURED_REMAINING; r = enter_STATE_REPLY_RECV_STRUCTURED_REMAINING ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.RECV_STRUCTURED_REMAINING", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.SIMPLE_REPLY.START: Parse a simple reply from the server */ static int enter_STATE_REPLY_SIMPLE_REPLY_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 22 "generator/states-reply-simple.c" struct command *cmd = h->reply_cmd; uint32_t error; error = be32toh (h->sbuf.reply.hdr.simple.error); if (cmd == NULL) { /* Unexpected reply. If error was set or we have structured * replies, we know there should be no payload, so the next byte * on the wire (if any) will be another reply, and we can let * FINISH_COMMAND diagnose/ignore the server bug. If not, we lack * context to know whether the server thinks it was responding to * NBD_CMD_READ, so it is safer to move to DEAD now than to risk * consuming a server's potential data payload as a reply stream * (even though we would be likely to produce a magic number * mismatch on the next pass that would also move us to DEAD). */ if (error || h->structured_replies) SET_NEXT_STATE (STATE_REPLY_FINISH_COMMAND); else { uint64_t cookie = be64toh (h->sbuf.reply.hdr.simple.cookie); SET_NEXT_STATE (STATE_DEAD); set_error (EPROTO, "no matching cookie %" PRIu64 " found for server reply, " "this is probably a server bug", cookie); } return 0; } /* Although a server with structured replies negotiated is in error * for using a simple reply to NBD_CMD_READ, we can cope with the * packet, but diagnose it by failing the read with EPROTO. */ if (cmd->type == NBD_CMD_READ && h->structured_replies) { debug (h, "server sent unexpected simple reply for read"); if (cmd->error == 0) cmd->error = EPROTO; } error = nbd_internal_errno_of_nbd_error (error); if (cmd->error == 0) cmd->error = error; if (error == 0 && cmd->type == NBD_CMD_READ) { h->rbuf = cmd->data; h->rlen = cmd->count; cmd->data_seen += cmd->count; SET_NEXT_STATE (STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD); } else { SET_NEXT_STATE (STATE_REPLY_FINISH_COMMAND); } return 0; } #line 6058 "lib/states.c" int nbd_internal_enter_STATE_REPLY_SIMPLE_REPLY_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_SIMPLE_REPLY_START; r = enter_STATE_REPLY_SIMPLE_REPLY_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.SIMPLE_REPLY.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.SIMPLE_REPLY.RECV_READ_PAYLOAD: Receiving the read payload for a simple * reply */ static int enter_STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 75 "generator/states-reply-simple.c" struct command *cmd = h->reply_cmd; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: /* guaranteed by START */ assert (cmd); if (CALLBACK_IS_NOT_NULL (cmd->cb.fn.chunk)) { int error = cmd->error; if (CALL_CALLBACK (cmd->cb.fn.chunk, cmd->data, cmd->count, cmd->offset, LIBNBD_READ_DATA, &error) == -1) cmd->error = error ? error : EPROTO; } SET_NEXT_STATE (STATE_REPLY_FINISH_COMMAND); } return 0; } #line 6119 "lib/states.c" int nbd_internal_enter_STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD; r = enter_STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.SIMPLE_REPLY.RECV_READ_PAYLOAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.START: Start parsing a chunk reply payload from the server */ static int enter_STATE_REPLY_CHUNK_REPLY_START ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 79 "generator/states-reply-chunk.c" struct command *cmd = h->reply_cmd; uint16_t flags, type; uint64_t length; uint64_t offset = -1; flags = be16toh (h->sbuf.reply.hdr.structured.flags); type = be16toh (h->sbuf.reply.hdr.structured.type); if (h->extended_headers) { length = be64toh (h->sbuf.reply.hdr.extended.length); offset = be64toh (h->sbuf.reply.hdr.extended.offset); } else length = be32toh (h->sbuf.reply.hdr.structured.length); /* Reject a server that replies with too much information, but don't * reject a single structured reply to NBD_CMD_READ on the largest * size we were willing to send. The most likely culprit is a server * that replies with block status with way too many extents, but any * oversized reply is going to take long enough to resync that it is * not worth keeping the connection alive. */ if (length > MAX_REQUEST_SIZE + sizeof h->sbuf.reply.payload.offset_data) { set_error (0, "invalid server reply length %" PRIu64, length); SET_NEXT_STATE (STATE_DEAD); return 0; } /* Skip an unexpected structured reply, including to an unknown cookie. */ if (cmd == NULL || !h->structured_replies || (h->extended_headers && offset != cmd->offset)) goto resync; h->payload_left = length; switch (type) { case NBD_REPLY_TYPE_NONE: if (length != 0 || !(flags & NBD_REPLY_FLAG_DONE)) goto resync; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_FINISH); break; case NBD_REPLY_TYPE_OFFSET_DATA: /* The spec states that 0-length requests are unspecified, but * 0-length replies are broken. Still, it's easy enough to support * them as an extension, so we use < instead of <=. */ if (cmd->type != NBD_CMD_READ || length < sizeof h->sbuf.reply.payload.offset_data) goto resync; h->rbuf = &h->sbuf.reply.payload.offset_data; h->rlen = sizeof h->sbuf.reply.payload.offset_data; h->payload_left -= h->rlen; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA); break; case NBD_REPLY_TYPE_OFFSET_HOLE: if (cmd->type != NBD_CMD_READ || length != sizeof h->sbuf.reply.payload.offset_hole) goto resync; h->rbuf = &h->sbuf.reply.payload.offset_hole; h->rlen = sizeof h->sbuf.reply.payload.offset_hole; h->payload_left -= h->rlen; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE); break; case NBD_REPLY_TYPE_BLOCK_STATUS: case NBD_REPLY_TYPE_BLOCK_STATUS_EXT: if (cmd->type != NBD_CMD_BLOCK_STATUS || !h->meta_valid || h->meta_contexts.len == 0 || !bs_reply_length_ok (type, length)) goto resync; ASSERT_MEMBER_ALIAS (struct command_cb, fn.extent32, fn.extent64); assert (CALLBACK_IS_NOT_NULL (cmd->cb.fn.extent32)); if (h->extended_headers != (type == NBD_REPLY_TYPE_BLOCK_STATUS_EXT)) { debug (h, "wrong block status reply type detected, " "this is probably a server bug"); if (cmd->error == 0) cmd->error = EPROTO; } /* Start by reading the context ID. */ h->rbuf = &h->sbuf.reply.payload; if (type == NBD_REPLY_TYPE_BLOCK_STATUS) h->rlen = sizeof h->sbuf.reply.payload.bs_hdr_32; else h->rlen = sizeof h->sbuf.reply.payload.bs_hdr_64; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER); break; default: if (NBD_REPLY_TYPE_IS_ERR (type)) { /* Any payload shorter than uint32_t cannot even carry an errno * value; anything longer, even if it is not long enough to be * compliant, will favor the wire error over EPROTO during more * length checks in RECV_ERROR_MESSAGE and RECV_ERROR_TAIL. */ if (length < sizeof h->sbuf.reply.payload.error.error.error) goto resync; h->rbuf = &h->sbuf.reply.payload.error.error; h->rlen = MIN (length, sizeof h->sbuf.reply.payload.error.error); SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RECV_ERROR); } else goto resync; break; } return 0; resync: h->rbuf = NULL; h->rlen = h->payload_left; h->payload_left = 0; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RESYNC); return 0; } #line 6267 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_START ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_START; r = enter_STATE_REPLY_CHUNK_REPLY_START ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.START", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.RECV_ERROR: Receive a chunk reply error header */ static int enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 193 "generator/states-reply-chunk.c" struct command *cmd = h->reply_cmd; uint32_t length, msglen, error; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: length = h->payload_left; h->payload_left -= MIN (length, sizeof h->sbuf.reply.payload.error.error); assert (length >= sizeof h->sbuf.reply.payload.error.error.error); assert (cmd); if (length < sizeof h->sbuf.reply.payload.error.error) goto resync; msglen = be16toh (h->sbuf.reply.payload.error.error.len); if (msglen > h->payload_left || msglen > sizeof h->sbuf.reply.payload.error.msg) goto resync; h->rbuf = h->sbuf.reply.payload.error.msg; h->rlen = msglen; h->payload_left -= h->rlen; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE); } return 0; resync: /* Favor the error packet's errno over RESYNC's EPROTO. */ error = be32toh (h->sbuf.reply.payload.error.error.error); if (cmd->error == 0) cmd->error = nbd_internal_errno_of_nbd_error (error); h->rbuf = NULL; h->rlen = h->payload_left; h->payload_left = 0; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RESYNC); return 0; } #line 6342 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_RECV_ERROR; r = enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.RECV_ERROR", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.RECV_ERROR_MESSAGE: Receive a chunk reply error message */ static int enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 235 "generator/states-reply-chunk.c" uint32_t msglen; uint16_t type; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: msglen = be16toh (h->sbuf.reply.payload.error.error.len); type = be16toh (h->sbuf.reply.hdr.structured.type); if (msglen) debug (h, "structured error server message: %.*s", (int)msglen, h->sbuf.reply.payload.error.msg); /* Special case two specific errors; silently ignore tail for all others */ h->rbuf = NULL; h->rlen = h->payload_left; switch (type) { case NBD_REPLY_TYPE_ERROR: if (h->payload_left != 0) debug (h, "ignoring unexpected slop after error message, " "the server may have a bug"); break; case NBD_REPLY_TYPE_ERROR_OFFSET: if (h->payload_left != sizeof h->sbuf.reply.payload.error.offset) debug (h, "unable to safely extract error offset, " "the server may have a bug"); else h->rbuf = &h->sbuf.reply.payload.error.offset; break; } h->payload_left = 0; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL); } return 0; } #line 6415 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE; r = enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.RECV_ERROR_MESSAGE", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.RECV_ERROR_TAIL: Receive a chunk reply error tail */ static int enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 275 "generator/states-reply-chunk.c" struct command *cmd = h->reply_cmd; uint32_t error; uint16_t type; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: error = be32toh (h->sbuf.reply.payload.error.error.error); type = be16toh (h->sbuf.reply.hdr.structured.type); assert (cmd); /* guaranteed by CHECK */ /* The spec requires the server to send a non-zero error */ error = nbd_internal_errno_of_nbd_error (error); if (error == 0) { debug (h, "server forgot to set error; using EPROTO"); error = EPROTO; } /* Sanity check that any error offset is in range, then invoke * user callback if present. Ignore the offset if it was bogus. */ if (type == NBD_REPLY_TYPE_ERROR_OFFSET && h->rbuf) { uint64_t offset = be64toh (h->sbuf.reply.payload.error.offset); if (structured_reply_in_bounds (offset, 0, cmd) && cmd->type == NBD_CMD_READ && CALLBACK_IS_NOT_NULL (cmd->cb.fn.chunk)) { int scratch = error; /* Different from successful reads: inform the callback about the * current error rather than any earlier one. If the callback fails * without setting errno, then use the server's error below. */ if (CALL_CALLBACK (cmd->cb.fn.chunk, (char *)cmd->data + (offset - cmd->offset), 0, offset, LIBNBD_READ_ERROR, &scratch) == -1) if (cmd->error == 0) cmd->error = scratch; } else debug (h, "no use for error offset %" PRIu64, offset); } /* Preserve first error encountered */ if (cmd->error == 0) cmd->error = error; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_FINISH); } return 0; } #line 6505 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL; r = enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.RECV_ERROR_TAIL", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.RECV_OFFSET_DATA: Receive a chunk reply offset-data header */ static int enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 332 "generator/states-reply-chunk.c" struct command *cmd = h->reply_cmd; uint64_t offset; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: offset = be64toh (h->sbuf.reply.payload.offset_data.offset); assert (cmd); /* guaranteed by CHECK */ assert (cmd->data && cmd->type == NBD_CMD_READ); /* Is the data within bounds? */ if (! structured_reply_in_bounds (offset, h->payload_left, cmd)) { SET_NEXT_STATE (STATE_DEAD); return 0; } if (cmd->data_seen <= cmd->count) cmd->data_seen += h->payload_left; /* Now this is the byte offset in the read buffer. */ offset -= cmd->offset; /* Set up to receive the data directly to the user buffer. */ h->rbuf = (char *)cmd->data + offset; h->rlen = h->payload_left; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA); } return 0; } #line 6572 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA; r = enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.RECV_OFFSET_DATA", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.RECV_OFFSET_DATA_DATA: Receive a chunk reply offset-data * block of data */ static int enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 365 "generator/states-reply-chunk.c" struct command *cmd = h->reply_cmd; uint64_t offset; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: offset = be64toh (h->sbuf.reply.payload.offset_data.offset); assert (cmd); /* guaranteed by CHECK */ if (CALLBACK_IS_NOT_NULL (cmd->cb.fn.chunk)) { int error = cmd->error; if (CALL_CALLBACK (cmd->cb.fn.chunk, (char *)cmd->data + (offset - cmd->offset), h->payload_left, offset, LIBNBD_READ_DATA, &error) == -1) if (cmd->error == 0) cmd->error = error ? error : EPROTO; } h->payload_left = 0; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_FINISH); } return 0; } #line 6637 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA; r = enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.RECV_OFFSET_DATA_DATA", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.RECV_OFFSET_HOLE: Receive a chunk reply offset-hole header */ static int enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 395 "generator/states-reply-chunk.c" struct command *cmd = h->reply_cmd; uint64_t offset; uint32_t length; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: offset = be64toh (h->sbuf.reply.payload.offset_hole.offset); length = be32toh (h->sbuf.reply.payload.offset_hole.length); assert (cmd); /* guaranteed by CHECK */ assert (cmd->data && cmd->type == NBD_CMD_READ); /* Is the data within bounds? */ if (! structured_reply_in_bounds (offset, length, cmd)) { SET_NEXT_STATE (STATE_DEAD); return 0; } if (cmd->data_seen <= cmd->count) cmd->data_seen += length; /* Now this is the byte offset in the read buffer. */ offset -= cmd->offset; /* The spec states that 0-length requests are unspecified, but * 0-length replies are broken. Still, it's easy enough to support * them as an extension, and this works even when length == 0. */ if (!cmd->initialized) memset ((char *)cmd->data + offset, 0, length); if (CALLBACK_IS_NOT_NULL (cmd->cb.fn.chunk)) { int error = cmd->error; if (CALL_CALLBACK (cmd->cb.fn.chunk, (char *)cmd->data + offset, length, cmd->offset + offset, LIBNBD_READ_HOLE, &error) == -1) if (cmd->error == 0) cmd->error = error ? error : EPROTO; } SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_FINISH); } return 0; } #line 6720 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE; r = enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.RECV_OFFSET_HOLE", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.RECV_BS_HEADER: Receive header of a chunk reply * block-status payload */ static int enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 444 "generator/states-reply-chunk.c" struct command *cmd = h->reply_cmd; uint16_t type; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: type = be16toh (h->sbuf.reply.hdr.structured.type); assert (cmd); /* guaranteed by CHECK */ assert (cmd->type == NBD_CMD_BLOCK_STATUS); assert (bs_reply_length_ok (type, h->payload_left)); STATIC_ASSERT (sizeof (struct nbd_block_descriptor_32) == 2 * sizeof *h->bs_cooked.narrow, _block_desc_is_multiple_of_bs_entry); ASSERT_MEMBER_ALIAS (union chunk_payload, bs_hdr_32.context_id, bs_hdr_64.context_id); if (type == NBD_REPLY_TYPE_BLOCK_STATUS) { h->payload_left -= sizeof h->sbuf.reply.payload.bs_hdr_32; assert (h->payload_left % sizeof *h->bs_raw.narrow == 0); h->bs_count = h->payload_left / sizeof *h->bs_raw.narrow; } else { assert (type == NBD_REPLY_TYPE_BLOCK_STATUS_EXT); h->payload_left -= sizeof h->sbuf.reply.payload.bs_hdr_64; assert (h->payload_left % sizeof *h->bs_raw.wide == 0); h->bs_count = h->payload_left / sizeof *h->bs_raw.wide; if (h->bs_count != be32toh (h->sbuf.reply.payload.bs_hdr_64.count)) { h->rbuf = NULL; h->rlen = h->payload_left; h->payload_left = 0; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RESYNC); return 0; } } free (h->bs_raw.storage); free (h->bs_cooked.storage); h->bs_raw.storage = malloc (h->payload_left); if (cmd->cb.wide) h->bs_cooked.storage = malloc (h->bs_count * sizeof *h->bs_cooked.wide); else h->bs_cooked.storage = malloc (2 * h->bs_count * sizeof *h->bs_cooked.narrow); if (h->bs_raw.storage == NULL || h->bs_cooked.storage == NULL) { SET_NEXT_STATE (STATE_DEAD); set_error (errno, "malloc"); free (h->bs_raw.storage); free (h->bs_cooked.storage); h->bs_raw.storage = NULL; h->bs_cooked.storage = NULL; return 0; } h->rbuf = h->bs_raw.storage; h->rlen = h->payload_left; h->payload_left = 0; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES); } return 0; } #line 6821 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER; r = enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.RECV_BS_HEADER", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.RECV_BS_ENTRIES: Receive entries array of chunk reply * block-status payload */ static int enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 510 "generator/states-reply-chunk.c" struct command *cmd = h->reply_cmd; uint16_t type; size_t i; uint32_t context_id; int error; const char *name; uint64_t orig_len, len, flags; uint64_t total, cap; bool stop; int ret; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: type = be16toh (h->sbuf.reply.hdr.structured.type); assert (cmd); /* guaranteed by CHECK */ assert (cmd->type == NBD_CMD_BLOCK_STATUS); assert (CALLBACK_IS_NOT_NULL (cmd->cb.fn.extent32)); assert (h->bs_count && h->bs_raw.storage); assert (h->meta_valid); /* Look up the context ID. Depends on ASSERT_MEMBER_ALIAS above. */ context_id = be32toh (h->sbuf.reply.payload.bs_hdr_32.context_id); for (i = 0; i < h->meta_contexts.len; ++i) if (context_id == h->meta_contexts.ptr[i].context_id) break; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_FINISH); if (i == h->meta_contexts.len) { /* Emit a debug message, but ignore it. */ debug (h, "server sent unexpected meta context ID %" PRIu32, context_id); break; } /* Be careful to avoid arithmetic overflow, even when the user * disabled LIBNBD_STRICT_BOUNDS to pass a suspect offset, or the * server returns suspect lengths or advertised exportsize larger * than 63 bits. We guarantee that callbacks will not see a * length exceeding INT64_MAX or the advertised h->exportsize. */ name = h->meta_contexts.ptr[i].name; total = cap = 0; if (cmd->offset <= h->exportsize) cap = h->exportsize - cmd->offset; /* Need to byte-swap the entries returned into the callback size * requested by the caller. The NBD protocol allows truncation as * long as progress is made; the client cannot tell the difference * between a server's truncation or if we truncate on a length we * don't like. We stop iterating on a zero-length extent (error * only if it is the first extent), on an extent beyond the * exportsize (unconditional error after truncating to * exportsize), and on an extent exceeding a callback length limit * (no error, and to simplify alignment, we truncate to 64M before * the limit); but we do not diagnose issues with the server's * length alignments, flag values, nor compliance with the REQ_ONE * command flag. */ for (i = 0, stop = false; i < h->bs_count && !stop; ++i) { if (type == NBD_REPLY_TYPE_BLOCK_STATUS) { orig_len = len = be32toh (h->bs_raw.narrow[i].length); flags = be32toh (h->bs_raw.narrow[i].status_flags); } else { orig_len = len = be64toh (h->bs_raw.wide[i].length); if (len > INT64_MAX) { /* Pick an aligned value rather than overflowing 64-bit * callback; this does not require an error. */ stop = true; len = INT64_MAX + 1ULL - MAX_REQUEST_SIZE; } if (len > UINT32_MAX && !cmd->cb.wide) { /* Pick an aligned value rather than overflowing 32-bit * callback; this does not require an error. */ stop = true; len = (uint32_t)-MAX_REQUEST_SIZE; } flags = be64toh (h->bs_raw.wide[i].status_flags); if (flags > UINT32_MAX && !cmd->cb.wide) { stop = true; if (i > 0) break; /* Skip this and later extents; we already made progress */ /* Expose this extent as an error; we made no progress */ cmd->error = cmd->error ? : EOVERFLOW; flags = (uint32_t)flags; } } assert (total <= cap); if (len > cap - total) { /* Truncate and expose this extent as an error */ len = cap - total; stop = true; cmd->error = cmd->error ? : EPROTO; } if (len == 0) { stop = true; if (i > 0) break; /* Skip this and later extents; we already made progress */ /* Expose this extent as an error; we made no progress */ cmd->error = cmd->error ? : EPROTO; } total += len; if (cmd->cb.wide) { h->bs_cooked.wide[i].length = len; h->bs_cooked.wide[i].flags = flags; } else { assert ((len | flags) <= UINT32_MAX); h->bs_cooked.narrow[i * 2] = len; h->bs_cooked.narrow[i * 2 + 1] = flags; } } /* Call the caller's extent function. Yes, our 32-bit public API * foolishly tracks the number of uint32_t instead of block * descriptors; see _block_desc_is_multiple_of_bs_entry above. */ if (stop) debug (h, "truncating server's response at unexpected extent length %" PRIu64 " and total %" PRIu64 " near extent %zu", orig_len, total, i); error = cmd->error; if (cmd->cb.wide) ret = CALL_CALLBACK (cmd->cb.fn.extent64, name, cmd->offset, h->bs_cooked.wide, i, &error); else ret = CALL_CALLBACK (cmd->cb.fn.extent32, name, cmd->offset, h->bs_cooked.narrow, i * 2, &error); if (ret == -1 && cmd->error == 0) cmd->error = error ? error : EPROTO; } return 0; } #line 6999 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES; r = enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.RECV_BS_ENTRIES", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.RESYNC: Ignore payload of an unexpected chunk reply */ static int enter_STATE_REPLY_CHUNK_REPLY_RESYNC ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 653 "generator/states-reply-chunk.c" struct command *cmd = h->reply_cmd; uint16_t type; uint64_t length; uint64_t offset = -1; assert (h->rbuf == NULL); switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (STATE_DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (STATE_READY); return 0; case 0: /* If this reply is to an unknown command, FINISH_COMMAND will * diagnose and ignore the server bug. Otherwise, ensure the * pending command sees a failure of EPROTO if it does not already * have an error. */ if (cmd == NULL) { SET_NEXT_STATE (STATE_REPLY_FINISH_COMMAND); return 0; } type = be16toh (h->sbuf.reply.hdr.structured.type); if (h->extended_headers) { length = be64toh (h->sbuf.reply.hdr.extended.length); offset = be64toh (h->sbuf.reply.hdr.extended.offset); if (offset != cmd->offset) debug (h, "unexpected reply offset %" PRIu64 " for cookie %" PRIu64 " and command %" PRIu32 ", this is probably a server bug", length, cmd->cookie, cmd->type); else offset = -1; } else length = be32toh (h->sbuf.reply.hdr.structured.length); if (offset == -1) debug (h, "unexpected reply type %u or payload length %" PRIu64 " for cookie %" PRIu64 " and command %" PRIu32 ", this is probably a server bug", type, length, cmd->cookie, cmd->type); if (cmd->error == 0) cmd->error = EPROTO; SET_NEXT_STATE (STATE_REPLY_CHUNK_REPLY_FINISH); } return 0; } #line 7079 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RESYNC ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_RESYNC; r = enter_STATE_REPLY_CHUNK_REPLY_RESYNC ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.RESYNC", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.CHUNK_REPLY.FINISH: Finish receiving a chunk reply */ static int enter_STATE_REPLY_CHUNK_REPLY_FINISH ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 700 "generator/states-reply-chunk.c" uint16_t flags; assert (h->payload_left == 0); flags = be16toh (h->sbuf.reply.hdr.structured.flags); if (flags & NBD_REPLY_FLAG_DONE) { SET_NEXT_STATE (STATE_REPLY_FINISH_COMMAND); } else { h->reply_cmd = NULL; SET_NEXT_STATE (STATE_READY); } return 0; } #line 7126 "lib/states.c" int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_FINISH ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_CHUNK_REPLY_FINISH; r = enter_STATE_REPLY_CHUNK_REPLY_FINISH ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.CHUNK_REPLY.FINISH", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* REPLY.FINISH_COMMAND: Finish receiving a command */ static int enter_STATE_REPLY_FINISH_COMMAND ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 246 "generator/states-reply.c" struct command *prev_cmd, *cmd; uint64_t cookie; bool retire; /* NB: This works for both simple and structured replies because the * handle (our cookie) is stored at the same offset. See the * STATIC_ASSERT above in state REPLY.START that confirmed this. */ cookie = be64toh (h->sbuf.reply.hdr.cookie); /* Find the command amongst the commands in flight. */ for (cmd = h->cmds_in_flight, prev_cmd = NULL; cmd != NULL; prev_cmd = cmd, cmd = cmd->next) { if (cmd->cookie == cookie) break; } assert (h->reply_cmd == cmd); if (cmd == NULL) { debug (h, "skipped reply for unexpected cookie %" PRIu64 ", this is probably a bug in the server", cookie); SET_NEXT_STATE (STATE_READY); return 0; } retire = cmd->type == NBD_CMD_DISC; h->reply_cmd = NULL; /* Notify the user */ if (CALLBACK_IS_NOT_NULL (cmd->cb.completion)) { int error = cmd->error; int r; assert (cmd->type != NBD_CMD_DISC); r = CALL_CALLBACK (cmd->cb.completion, &error); switch (r) { case -1: if (error) cmd->error = error; break; case 1: retire = true; break; } } /* Move it to the end of the cmds_done list. */ if (prev_cmd != NULL) prev_cmd->next = cmd->next; else h->cmds_in_flight = cmd->next; cmd->next = NULL; if (retire) nbd_internal_retire_and_free_command (cmd); else { if (h->cmds_done_tail != NULL) h->cmds_done_tail = h->cmds_done_tail->next = cmd; else { assert (h->cmds_done == NULL); h->cmds_done = h->cmds_done_tail = cmd; } } h->in_flight--; assert (h->in_flight >= 0); SET_NEXT_STATE (STATE_READY); return 0; } #line 7227 "lib/states.c" int nbd_internal_enter_STATE_REPLY_FINISH_COMMAND ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_REPLY_FINISH_COMMAND; r = enter_STATE_REPLY_FINISH_COMMAND ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "REPLY.FINISH_COMMAND", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* DEAD: Connection is in an unrecoverable error state, can only be closed */ static int enter_STATE_DEAD ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 193 "generator/states.c" const char *err = nbd_get_error (); /* The caller should have used set_error() before reaching here */ assert (err != NULL); debug (h, "handle dead: %s", err); abort_option (h); nbd_internal_abort_commands (h, &h->cmds_to_issue); nbd_internal_abort_commands (h, &h->cmds_in_flight); h->in_flight = 0; if (h->sock) { h->sock->ops->close (h->sock); h->sock = NULL; } return -1; } #line 7277 "lib/states.c" int nbd_internal_enter_STATE_DEAD ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_DEAD; r = enter_STATE_DEAD ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "DEAD", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } /* CLOSED: Connection is closed */ static int enter_STATE_CLOSED ( struct nbd_handle *h, enum state *next_state, bool *blocked ) { #line 210 "generator/states.c" abort_option (h); nbd_internal_abort_commands (h, &h->cmds_to_issue); nbd_internal_abort_commands (h, &h->cmds_in_flight); h->in_flight = 0; if (h->sock) { h->sock->ops->close (h->sock); h->sock = NULL; } return 0; } #line 7321 "lib/states.c" int nbd_internal_enter_STATE_CLOSED ( struct nbd_handle *h, bool *blocked ) { int r; enum state next; next = STATE_CLOSED; r = enter_STATE_CLOSED ( h, &next, blocked ); if (get_next_state (h) != next) { #ifdef LIBNBD_STATE_VERBOSE debug (h, "transition: %s -> %s", "CLOSED", nbd_internal_state_short_string (next)); #endif set_next_state (h, next); } return r; } libnbd-1.20.3/lib/states-run.c0000444000175000017500000021453614603303744011544 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator generator/states*.c * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include "libnbd.h" #include "internal.h" /* Run the state machine based on an external event until it would block. */ int nbd_internal_run (struct nbd_handle *h, enum external_event ev) { int r; bool blocked; /* Validate and handle the external event. */ switch (get_next_state (h)) { case STATE_START: switch (ev) { case cmd_create: goto ok; case cmd_connect_sockaddr: set_next_state (h, STATE_CONNECT_START); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "CmdConnectSockAddr", "START", "CONNECT.START"); #endif goto ok; case cmd_connect_tcp: set_next_state (h, STATE_CONNECT_TCP_START); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "CmdConnectTCP", "START", "CONNECT_TCP.START"); #endif goto ok; case cmd_connect_command: set_next_state (h, STATE_CONNECT_COMMAND_START); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "CmdConnectCommand", "START", "CONNECT_COMMAND.START"); #endif goto ok; case cmd_connect_sa: set_next_state (h, STATE_CONNECT_SA_START); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "CmdConnectSA", "START", "CONNECT_SA.START"); #endif goto ok; case cmd_connect_socket: set_next_state (h, STATE_MAGIC_START); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "CmdConnectSocket", "START", "MAGIC.START"); #endif goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_CONNECT_START: switch (ev) { case notify_write: set_next_state (h, STATE_CONNECT_CONNECTING); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "NotifyWrite", "CONNECT.START", "CONNECT.CONNECTING"); #endif goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_CONNECT_CONNECTING: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_CONNECT_TCP_START: break; case STATE_CONNECT_TCP_CONNECT: switch (ev) { case notify_write: set_next_state (h, STATE_CONNECT_TCP_CONNECTING); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "NotifyWrite", "CONNECT_TCP.CONNECT", "CONNECT_TCP.CONNECTING"); #endif goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_CONNECT_TCP_CONNECTING: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_CONNECT_TCP_NEXT_ADDRESS: break; case STATE_CONNECT_COMMAND_START: break; case STATE_CONNECT_SA_START: break; case STATE_MAGIC_START: break; case STATE_MAGIC_RECV_MAGIC: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_MAGIC_CHECK_MAGIC: break; case STATE_OLDSTYLE_START: break; case STATE_OLDSTYLE_RECV_REMAINING: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_OLDSTYLE_CHECK: break; case STATE_NEWSTYLE_START: break; case STATE_NEWSTYLE_RECV_GFLAGS: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_CHECK_GFLAGS: break; case STATE_NEWSTYLE_SEND_CFLAGS: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_STARTTLS_START: break; case STATE_NEWSTYLE_OPT_STARTTLS_SEND: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE: break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START: break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START: break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_META_CONTEXT_START: break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY: break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY: break; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_GO_START: break; case STATE_NEWSTYLE_OPT_GO_SEND: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORT: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_GO_SEND_INFO: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_GO_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_START: break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_LIST_START: break; case STATE_NEWSTYLE_OPT_LIST_SEND: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY: break; case STATE_NEWSTYLE_PREPARE_OPT_ABORT: break; case STATE_NEWSTYLE_SEND_OPT_ABORT: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN: switch (ev) { case notify_write: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_NEWSTYLE_FINISHED: break; case STATE_NEGOTIATING: switch (ev) { case cmd_issue: set_next_state (h, STATE_NEWSTYLE_START); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "CmdIssue", "NEGOTIATING", "NEWSTYLE.START"); #endif goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_READY: switch (ev) { case cmd_issue: set_next_state (h, STATE_ISSUE_COMMAND_START); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "CmdIssue", "READY", "ISSUE_COMMAND.START"); #endif goto ok; case notify_read: set_next_state (h, STATE_REPLY_START); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "NotifyRead", "READY", "REPLY.START"); #endif goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_ISSUE_COMMAND_START: break; case STATE_ISSUE_COMMAND_SEND_REQUEST: switch (ev) { case notify_write: goto ok; case notify_read: set_next_state (h, STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "NotifyRead", "ISSUE_COMMAND.SEND_REQUEST", "ISSUE_COMMAND.PAUSE_SEND_REQUEST"); #endif goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST: break; case STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD: break; case STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD: switch (ev) { case notify_write: goto ok; case notify_read: set_next_state (h, STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "NotifyRead", "ISSUE_COMMAND.SEND_WRITE_PAYLOAD", "ISSUE_COMMAND.PAUSE_WRITE_PAYLOAD"); #endif goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD: break; case STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN: switch (ev) { case notify_write: goto ok; case notify_read: set_next_state (h, STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN); #ifdef LIBNBD_STATE_VERBOSE debug (h, "event %s: %s -> %s", "NotifyRead", "ISSUE_COMMAND.SEND_WRITE_SHUTDOWN", "ISSUE_COMMAND.PAUSE_WRITE_SHUTDOWN"); #endif goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN: break; case STATE_ISSUE_COMMAND_FINISH: break; case STATE_REPLY_START: switch (ev) { case notify_read: goto ok; default: ; /* nothing, silence GCC warning */ } break; case STATE_REPLY_RECV_REPLY: break; case STATE_REPLY_CHECK_REPLY_MAGIC: break; case STATE_REPLY_RECV_STRUCTURED_REMAINING: break; case STATE_REPLY_SIMPLE_REPLY_START: break; case STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD: break; case STATE_REPLY_CHUNK_REPLY_START: break; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR: break; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE: break; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL: break; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA: break; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA: break; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE: break; case STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER: break; case STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES: break; case STATE_REPLY_CHUNK_REPLY_RESYNC: break; case STATE_REPLY_CHUNK_REPLY_FINISH: break; case STATE_REPLY_FINISH_COMMAND: break; case STATE_DEAD: break; case STATE_CLOSED: break; } set_error (EINVAL, "external event %d is invalid in state %s", ev, nbd_internal_state_short_string (get_next_state (h))); return -1; ok: do { blocked = true; /* Run a single step. */ switch (get_next_state (h)) { case STATE_START: r = nbd_internal_enter_STATE_START (h, &blocked); break; case STATE_CONNECT_START: r = nbd_internal_enter_STATE_CONNECT_START (h, &blocked); break; case STATE_CONNECT_CONNECTING: r = nbd_internal_enter_STATE_CONNECT_CONNECTING (h, &blocked); break; case STATE_CONNECT_TCP_START: r = nbd_internal_enter_STATE_CONNECT_TCP_START (h, &blocked); break; case STATE_CONNECT_TCP_CONNECT: r = nbd_internal_enter_STATE_CONNECT_TCP_CONNECT (h, &blocked); break; case STATE_CONNECT_TCP_CONNECTING: r = nbd_internal_enter_STATE_CONNECT_TCP_CONNECTING (h, &blocked); break; case STATE_CONNECT_TCP_NEXT_ADDRESS: r = nbd_internal_enter_STATE_CONNECT_TCP_NEXT_ADDRESS (h, &blocked); break; case STATE_CONNECT_COMMAND_START: r = nbd_internal_enter_STATE_CONNECT_COMMAND_START (h, &blocked); break; case STATE_CONNECT_SA_START: r = nbd_internal_enter_STATE_CONNECT_SA_START (h, &blocked); break; case STATE_MAGIC_START: r = nbd_internal_enter_STATE_MAGIC_START (h, &blocked); break; case STATE_MAGIC_RECV_MAGIC: r = nbd_internal_enter_STATE_MAGIC_RECV_MAGIC (h, &blocked); break; case STATE_MAGIC_CHECK_MAGIC: r = nbd_internal_enter_STATE_MAGIC_CHECK_MAGIC (h, &blocked); break; case STATE_OLDSTYLE_START: r = nbd_internal_enter_STATE_OLDSTYLE_START (h, &blocked); break; case STATE_OLDSTYLE_RECV_REMAINING: r = nbd_internal_enter_STATE_OLDSTYLE_RECV_REMAINING (h, &blocked); break; case STATE_OLDSTYLE_CHECK: r = nbd_internal_enter_STATE_OLDSTYLE_CHECK (h, &blocked); break; case STATE_NEWSTYLE_START: r = nbd_internal_enter_STATE_NEWSTYLE_START (h, &blocked); break; case STATE_NEWSTYLE_RECV_GFLAGS: r = nbd_internal_enter_STATE_NEWSTYLE_RECV_GFLAGS (h, &blocked); break; case STATE_NEWSTYLE_CHECK_GFLAGS: r = nbd_internal_enter_STATE_NEWSTYLE_CHECK_GFLAGS (h, &blocked); break; case STATE_NEWSTYLE_SEND_CFLAGS: r = nbd_internal_enter_STATE_NEWSTYLE_SEND_CFLAGS (h, &blocked); break; case STATE_NEWSTYLE_OPT_STARTTLS_START: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_START (h, &blocked); break; case STATE_NEWSTYLE_OPT_STARTTLS_SEND: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_SEND (h, &blocked); break; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD (h, &blocked); break; case STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ (h, &blocked); break; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE (h, &blocked); break; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START (h, &blocked); break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND (h, &blocked); break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD (h, &blocked); break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_START: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_START (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD (h, &blocked); break; case STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_GO_START: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_START (h, &blocked); break; case STATE_NEWSTYLE_OPT_GO_SEND: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND (h, &blocked); break; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN (h, &blocked); break; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORT: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORT (h, &blocked); break; case STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS (h, &blocked); break; case STATE_NEWSTYLE_OPT_GO_SEND_INFO: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_INFO (h, &blocked); break; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD (h, &blocked); break; case STATE_NEWSTYLE_OPT_GO_CHECK_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_CHECK_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_START: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_START (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_LIST_START: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_START (h, &blocked); break; case STATE_NEWSTYLE_OPT_LIST_SEND: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_SEND (h, &blocked); break; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY (h, &blocked); break; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD (h, &blocked); break; case STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY: r = nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY (h, &blocked); break; case STATE_NEWSTYLE_PREPARE_OPT_ABORT: r = nbd_internal_enter_STATE_NEWSTYLE_PREPARE_OPT_ABORT (h, &blocked); break; case STATE_NEWSTYLE_SEND_OPT_ABORT: r = nbd_internal_enter_STATE_NEWSTYLE_SEND_OPT_ABORT (h, &blocked); break; case STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN: r = nbd_internal_enter_STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN (h, &blocked); break; case STATE_NEWSTYLE_FINISHED: r = nbd_internal_enter_STATE_NEWSTYLE_FINISHED (h, &blocked); break; case STATE_NEGOTIATING: r = nbd_internal_enter_STATE_NEGOTIATING (h, &blocked); break; case STATE_READY: r = nbd_internal_enter_STATE_READY (h, &blocked); break; case STATE_ISSUE_COMMAND_START: r = nbd_internal_enter_STATE_ISSUE_COMMAND_START (h, &blocked); break; case STATE_ISSUE_COMMAND_SEND_REQUEST: r = nbd_internal_enter_STATE_ISSUE_COMMAND_SEND_REQUEST (h, &blocked); break; case STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST: r = nbd_internal_enter_STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST (h, &blocked); break; case STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD: r = nbd_internal_enter_STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD (h, &blocked); break; case STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD: r = nbd_internal_enter_STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD (h, &blocked); break; case STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD: r = nbd_internal_enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD (h, &blocked); break; case STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN: r = nbd_internal_enter_STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN (h, &blocked); break; case STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN: r = nbd_internal_enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN (h, &blocked); break; case STATE_ISSUE_COMMAND_FINISH: r = nbd_internal_enter_STATE_ISSUE_COMMAND_FINISH (h, &blocked); break; case STATE_REPLY_START: r = nbd_internal_enter_STATE_REPLY_START (h, &blocked); break; case STATE_REPLY_RECV_REPLY: r = nbd_internal_enter_STATE_REPLY_RECV_REPLY (h, &blocked); break; case STATE_REPLY_CHECK_REPLY_MAGIC: r = nbd_internal_enter_STATE_REPLY_CHECK_REPLY_MAGIC (h, &blocked); break; case STATE_REPLY_RECV_STRUCTURED_REMAINING: r = nbd_internal_enter_STATE_REPLY_RECV_STRUCTURED_REMAINING (h, &blocked); break; case STATE_REPLY_SIMPLE_REPLY_START: r = nbd_internal_enter_STATE_REPLY_SIMPLE_REPLY_START (h, &blocked); break; case STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD: r = nbd_internal_enter_STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_START: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_START (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_RESYNC: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RESYNC (h, &blocked); break; case STATE_REPLY_CHUNK_REPLY_FINISH: r = nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_FINISH (h, &blocked); break; case STATE_REPLY_FINISH_COMMAND: r = nbd_internal_enter_STATE_REPLY_FINISH_COMMAND (h, &blocked); break; case STATE_DEAD: r = nbd_internal_enter_STATE_DEAD (h, &blocked); break; case STATE_CLOSED: r = nbd_internal_enter_STATE_CLOSED (h, &blocked); break; default: abort (); /* Should never happen, but keeps GCC happy. */ } if (r == -1) { assert (nbd_get_error () != NULL); return -1; } } while (!blocked); return 0; } /* Returns whether in the given state read or write would be valid. * NB: is_locked = false, may_set_error = false. */ int nbd_internal_aio_get_direction (enum state state) { int r = 0; switch (state) { case STATE_START: break; case STATE_CONNECT_START: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_CONNECT_CONNECTING: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_CONNECT_TCP_START: break; case STATE_CONNECT_TCP_CONNECT: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_CONNECT_TCP_CONNECTING: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_CONNECT_TCP_NEXT_ADDRESS: break; case STATE_CONNECT_COMMAND_START: break; case STATE_CONNECT_SA_START: break; case STATE_MAGIC_START: break; case STATE_MAGIC_RECV_MAGIC: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_MAGIC_CHECK_MAGIC: break; case STATE_OLDSTYLE_START: break; case STATE_OLDSTYLE_RECV_REMAINING: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_OLDSTYLE_CHECK: break; case STATE_NEWSTYLE_START: break; case STATE_NEWSTYLE_RECV_GFLAGS: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_CHECK_GFLAGS: break; case STATE_NEWSTYLE_SEND_CFLAGS: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_STARTTLS_START: break; case STATE_NEWSTYLE_OPT_STARTTLS_SEND: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE: break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START: break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START: break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_META_CONTEXT_START: break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY: break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY: break; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_GO_START: break; case STATE_NEWSTYLE_OPT_GO_SEND: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORT: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_GO_SEND_INFO: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_GO_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_START: break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY: break; case STATE_NEWSTYLE_OPT_LIST_START: break; case STATE_NEWSTYLE_OPT_LIST_SEND: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY: break; case STATE_NEWSTYLE_PREPARE_OPT_ABORT: break; case STATE_NEWSTYLE_SEND_OPT_ABORT: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN: r |= LIBNBD_AIO_DIRECTION_WRITE; break; case STATE_NEWSTYLE_FINISHED: break; case STATE_NEGOTIATING: break; case STATE_READY: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_ISSUE_COMMAND_START: break; case STATE_ISSUE_COMMAND_SEND_REQUEST: r |= LIBNBD_AIO_DIRECTION_WRITE; r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST: break; case STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD: break; case STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD: r |= LIBNBD_AIO_DIRECTION_WRITE; r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD: break; case STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN: r |= LIBNBD_AIO_DIRECTION_WRITE; r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN: break; case STATE_ISSUE_COMMAND_FINISH: break; case STATE_REPLY_START: r |= LIBNBD_AIO_DIRECTION_READ; break; case STATE_REPLY_RECV_REPLY: break; case STATE_REPLY_CHECK_REPLY_MAGIC: break; case STATE_REPLY_RECV_STRUCTURED_REMAINING: break; case STATE_REPLY_SIMPLE_REPLY_START: break; case STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD: break; case STATE_REPLY_CHUNK_REPLY_START: break; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR: break; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE: break; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL: break; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA: break; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA: break; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE: break; case STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER: break; case STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES: break; case STATE_REPLY_CHUNK_REPLY_RESYNC: break; case STATE_REPLY_CHUNK_REPLY_FINISH: break; case STATE_REPLY_FINISH_COMMAND: break; case STATE_DEAD: break; case STATE_CLOSED: break; } return r; } /* Other functions associated with the state machine. */ const char * nbd_internal_state_short_string (enum state state) { switch (state) { case STATE_START: return "START"; case STATE_CONNECT_START: return "CONNECT.START"; case STATE_CONNECT_CONNECTING: return "CONNECT.CONNECTING"; case STATE_CONNECT_TCP_START: return "CONNECT_TCP.START"; case STATE_CONNECT_TCP_CONNECT: return "CONNECT_TCP.CONNECT"; case STATE_CONNECT_TCP_CONNECTING: return "CONNECT_TCP.CONNECTING"; case STATE_CONNECT_TCP_NEXT_ADDRESS: return "CONNECT_TCP.NEXT_ADDRESS"; case STATE_CONNECT_COMMAND_START: return "CONNECT_COMMAND.START"; case STATE_CONNECT_SA_START: return "CONNECT_SA.START"; case STATE_MAGIC_START: return "MAGIC.START"; case STATE_MAGIC_RECV_MAGIC: return "MAGIC.RECV_MAGIC"; case STATE_MAGIC_CHECK_MAGIC: return "MAGIC.CHECK_MAGIC"; case STATE_OLDSTYLE_START: return "OLDSTYLE.START"; case STATE_OLDSTYLE_RECV_REMAINING: return "OLDSTYLE.RECV_REMAINING"; case STATE_OLDSTYLE_CHECK: return "OLDSTYLE.CHECK"; case STATE_NEWSTYLE_START: return "NEWSTYLE.START"; case STATE_NEWSTYLE_RECV_GFLAGS: return "NEWSTYLE.RECV_GFLAGS"; case STATE_NEWSTYLE_CHECK_GFLAGS: return "NEWSTYLE.CHECK_GFLAGS"; case STATE_NEWSTYLE_SEND_CFLAGS: return "NEWSTYLE.SEND_CFLAGS"; case STATE_NEWSTYLE_OPT_STARTTLS_START: return "NEWSTYLE.OPT_STARTTLS.START"; case STATE_NEWSTYLE_OPT_STARTTLS_SEND: return "NEWSTYLE.OPT_STARTTLS.SEND"; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY: return "NEWSTYLE.OPT_STARTTLS.RECV_REPLY"; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_STARTTLS.RECV_REPLY_PAYLOAD"; case STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY: return "NEWSTYLE.OPT_STARTTLS.CHECK_REPLY"; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ: return "NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_READ"; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE: return "NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_WRITE"; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE: return "NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_DONE"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START: return "NEWSTYLE.OPT_EXTENDED_HEADERS.START"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND: return "NEWSTYLE.OPT_EXTENDED_HEADERS.SEND"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY: return "NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY_PAYLOAD"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY: return "NEWSTYLE.OPT_EXTENDED_HEADERS.CHECK_REPLY"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START: return "NEWSTYLE.OPT_STRUCTURED_REPLY.START"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND: return "NEWSTYLE.OPT_STRUCTURED_REPLY.SEND"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY: return "NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY_PAYLOAD"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY: return "NEWSTYLE.OPT_STRUCTURED_REPLY.CHECK_REPLY"; case STATE_NEWSTYLE_OPT_META_CONTEXT_START: return "NEWSTYLE.OPT_META_CONTEXT.START"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND: return "NEWSTYLE.OPT_META_CONTEXT.SEND"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN: return "NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAMELEN"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME: return "NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAME"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES: return "NEWSTYLE.OPT_META_CONTEXT.SEND_NRQUERIES"; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY: return "NEWSTYLE.OPT_META_CONTEXT.PREPARE_NEXT_QUERY"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN: return "NEWSTYLE.OPT_META_CONTEXT.SEND_QUERYLEN"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY: return "NEWSTYLE.OPT_META_CONTEXT.SEND_QUERY"; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY: return "NEWSTYLE.OPT_META_CONTEXT.PREPARE_FOR_REPLY"; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY: return "NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY"; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY_PAYLOAD"; case STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY: return "NEWSTYLE.OPT_META_CONTEXT.CHECK_REPLY"; case STATE_NEWSTYLE_OPT_GO_START: return "NEWSTYLE.OPT_GO.START"; case STATE_NEWSTYLE_OPT_GO_SEND: return "NEWSTYLE.OPT_GO.SEND"; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN: return "NEWSTYLE.OPT_GO.SEND_EXPORTNAMELEN"; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORT: return "NEWSTYLE.OPT_GO.SEND_EXPORT"; case STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS: return "NEWSTYLE.OPT_GO.SEND_NRINFOS"; case STATE_NEWSTYLE_OPT_GO_SEND_INFO: return "NEWSTYLE.OPT_GO.SEND_INFO"; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY: return "NEWSTYLE.OPT_GO.RECV_REPLY"; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_GO.RECV_REPLY_PAYLOAD"; case STATE_NEWSTYLE_OPT_GO_CHECK_REPLY: return "NEWSTYLE.OPT_GO.CHECK_REPLY"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_START: return "NEWSTYLE.OPT_EXPORT_NAME.START"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND: return "NEWSTYLE.OPT_EXPORT_NAME.SEND"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT: return "NEWSTYLE.OPT_EXPORT_NAME.SEND_EXPORT"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY: return "NEWSTYLE.OPT_EXPORT_NAME.RECV_REPLY"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY: return "NEWSTYLE.OPT_EXPORT_NAME.CHECK_REPLY"; case STATE_NEWSTYLE_OPT_LIST_START: return "NEWSTYLE.OPT_LIST.START"; case STATE_NEWSTYLE_OPT_LIST_SEND: return "NEWSTYLE.OPT_LIST.SEND"; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY: return "NEWSTYLE.OPT_LIST.RECV_REPLY"; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_LIST.RECV_REPLY_PAYLOAD"; case STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY: return "NEWSTYLE.OPT_LIST.CHECK_REPLY"; case STATE_NEWSTYLE_PREPARE_OPT_ABORT: return "NEWSTYLE.PREPARE_OPT_ABORT"; case STATE_NEWSTYLE_SEND_OPT_ABORT: return "NEWSTYLE.SEND_OPT_ABORT"; case STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN: return "NEWSTYLE.SEND_OPTION_SHUTDOWN"; case STATE_NEWSTYLE_FINISHED: return "NEWSTYLE.FINISHED"; case STATE_NEGOTIATING: return "NEGOTIATING"; case STATE_READY: return "READY"; case STATE_ISSUE_COMMAND_START: return "ISSUE_COMMAND.START"; case STATE_ISSUE_COMMAND_SEND_REQUEST: return "ISSUE_COMMAND.SEND_REQUEST"; case STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST: return "ISSUE_COMMAND.PAUSE_SEND_REQUEST"; case STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD: return "ISSUE_COMMAND.PREPARE_WRITE_PAYLOAD"; case STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD: return "ISSUE_COMMAND.SEND_WRITE_PAYLOAD"; case STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD: return "ISSUE_COMMAND.PAUSE_WRITE_PAYLOAD"; case STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN: return "ISSUE_COMMAND.SEND_WRITE_SHUTDOWN"; case STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN: return "ISSUE_COMMAND.PAUSE_WRITE_SHUTDOWN"; case STATE_ISSUE_COMMAND_FINISH: return "ISSUE_COMMAND.FINISH"; case STATE_REPLY_START: return "REPLY.START"; case STATE_REPLY_RECV_REPLY: return "REPLY.RECV_REPLY"; case STATE_REPLY_CHECK_REPLY_MAGIC: return "REPLY.CHECK_REPLY_MAGIC"; case STATE_REPLY_RECV_STRUCTURED_REMAINING: return "REPLY.RECV_STRUCTURED_REMAINING"; case STATE_REPLY_SIMPLE_REPLY_START: return "REPLY.SIMPLE_REPLY.START"; case STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD: return "REPLY.SIMPLE_REPLY.RECV_READ_PAYLOAD"; case STATE_REPLY_CHUNK_REPLY_START: return "REPLY.CHUNK_REPLY.START"; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR: return "REPLY.CHUNK_REPLY.RECV_ERROR"; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE: return "REPLY.CHUNK_REPLY.RECV_ERROR_MESSAGE"; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL: return "REPLY.CHUNK_REPLY.RECV_ERROR_TAIL"; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA: return "REPLY.CHUNK_REPLY.RECV_OFFSET_DATA"; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA: return "REPLY.CHUNK_REPLY.RECV_OFFSET_DATA_DATA"; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE: return "REPLY.CHUNK_REPLY.RECV_OFFSET_HOLE"; case STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER: return "REPLY.CHUNK_REPLY.RECV_BS_HEADER"; case STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES: return "REPLY.CHUNK_REPLY.RECV_BS_ENTRIES"; case STATE_REPLY_CHUNK_REPLY_RESYNC: return "REPLY.CHUNK_REPLY.RESYNC"; case STATE_REPLY_CHUNK_REPLY_FINISH: return "REPLY.CHUNK_REPLY.FINISH"; case STATE_REPLY_FINISH_COMMAND: return "REPLY.FINISH_COMMAND"; case STATE_DEAD: return "DEAD"; case STATE_CLOSED: return "CLOSED"; } /* This function is only used for debug messages, and * this should never happen. */ return "UNKNOWN!"; } const char * nbd_unlocked_connection_state (struct nbd_handle *h) { switch (get_next_state (h)) { case STATE_START: return "START" ": " "Handle after being initially created"; case STATE_CONNECT_START: return "CONNECT.START" ": " "Initial call to connect(2) on the socket"; case STATE_CONNECT_CONNECTING: return "CONNECT.CONNECTING" ": " "Connecting to the remote server"; case STATE_CONNECT_TCP_START: return "CONNECT_TCP.START" ": " "Connect to a remote TCP server"; case STATE_CONNECT_TCP_CONNECT: return "CONNECT_TCP.CONNECT" ": " "Initial call to connect(2) on a TCP socket"; case STATE_CONNECT_TCP_CONNECTING: return "CONNECT_TCP.CONNECTING" ": " "Connecting to the remote server over a TCP socket"; case STATE_CONNECT_TCP_NEXT_ADDRESS: return "CONNECT_TCP.NEXT_ADDRESS" ": " "Connecting to the next address over a TCP socket"; case STATE_CONNECT_COMMAND_START: return "CONNECT_COMMAND.START" ": " "Connect to a subprocess"; case STATE_CONNECT_SA_START: return "CONNECT_SA.START" ": " "Connect to a subprocess with systemd socket activation"; case STATE_MAGIC_START: return "MAGIC.START" ": " "Prepare to receive the magic identification from remote"; case STATE_MAGIC_RECV_MAGIC: return "MAGIC.RECV_MAGIC" ": " "Receive initial magic identification from remote"; case STATE_MAGIC_CHECK_MAGIC: return "MAGIC.CHECK_MAGIC" ": " "Check magic and version sent by remote"; case STATE_OLDSTYLE_START: return "OLDSTYLE.START" ": " "Prepare to receive remainder of oldstyle header"; case STATE_OLDSTYLE_RECV_REMAINING: return "OLDSTYLE.RECV_REMAINING" ": " "Receive remainder of oldstyle header"; case STATE_OLDSTYLE_CHECK: return "OLDSTYLE.CHECK" ": " "Check oldstyle header"; case STATE_NEWSTYLE_START: return "NEWSTYLE.START" ": " "Prepare to receive newstyle gflags from remote"; case STATE_NEWSTYLE_RECV_GFLAGS: return "NEWSTYLE.RECV_GFLAGS" ": " "Receive newstyle gflags from remote"; case STATE_NEWSTYLE_CHECK_GFLAGS: return "NEWSTYLE.CHECK_GFLAGS" ": " "Check global flags sent by remote"; case STATE_NEWSTYLE_SEND_CFLAGS: return "NEWSTYLE.SEND_CFLAGS" ": " "Send newstyle client flags to remote"; case STATE_NEWSTYLE_OPT_STARTTLS_START: return "NEWSTYLE.OPT_STARTTLS.START" ": " "Try to send newstyle NBD_OPT_STARTTLS to upgrade to TLS"; case STATE_NEWSTYLE_OPT_STARTTLS_SEND: return "NEWSTYLE.OPT_STARTTLS.SEND" ": " "Send newstyle NBD_OPT_STARTTLS to upgrade to TLS"; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY: return "NEWSTYLE.OPT_STARTTLS.RECV_REPLY" ": " "Receive newstyle NBD_OPT_STARTTLS reply"; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_STARTTLS.RECV_REPLY_PAYLOAD" ": " "Receive any newstyle NBD_OPT_STARTTLS reply payload"; case STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY: return "NEWSTYLE.OPT_STARTTLS.CHECK_REPLY" ": " "Check newstyle NBD_OPT_STARTTLS reply"; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ: return "NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_READ" ": " "TLS handshake (reading)"; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE: return "NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_WRITE" ": " "TLS handshake (writing)"; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE: return "NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_DONE" ": " "TLS handshake complete"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START: return "NEWSTYLE.OPT_EXTENDED_HEADERS.START" ": " "Try to negotiate newstyle NBD_OPT_EXTENDED_HEADERS"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND: return "NEWSTYLE.OPT_EXTENDED_HEADERS.SEND" ": " "Send newstyle NBD_OPT_EXTENDED_HEADERS negotiation request"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY: return "NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY" ": " "Receive newstyle NBD_OPT_EXTENDED_HEADERS option reply"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY_PAYLOAD" ": " "Receive any newstyle NBD_OPT_EXTENDED_HEADERS reply payload"; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY: return "NEWSTYLE.OPT_EXTENDED_HEADERS.CHECK_REPLY" ": " "Check newstyle NBD_OPT_EXTENDED_HEADERS option reply"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START: return "NEWSTYLE.OPT_STRUCTURED_REPLY.START" ": " "Try to negotiate newstyle NBD_OPT_STRUCTURED_REPLY"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND: return "NEWSTYLE.OPT_STRUCTURED_REPLY.SEND" ": " "Send newstyle NBD_OPT_STRUCTURED_REPLY negotiation request"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY: return "NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY" ": " "Receive newstyle NBD_OPT_STRUCTURED_REPLY option reply"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY_PAYLOAD" ": " "Receive any newstyle NBD_OPT_STRUCTURED_REPLY reply payload"; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY: return "NEWSTYLE.OPT_STRUCTURED_REPLY.CHECK_REPLY" ": " "Check newstyle NBD_OPT_STRUCTURED_REPLY option reply"; case STATE_NEWSTYLE_OPT_META_CONTEXT_START: return "NEWSTYLE.OPT_META_CONTEXT.START" ": " "Try to negotiate newstyle NBD_OPT_SET_META_CONTEXT"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND: return "NEWSTYLE.OPT_META_CONTEXT.SEND" ": " "Send newstyle NBD_OPT_SET_META_CONTEXT"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN: return "NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAMELEN" ": " "Send newstyle NBD_OPT_SET_META_CONTEXT export name length"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME: return "NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAME" ": " "Send newstyle NBD_OPT_SET_META_CONTEXT export name"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES: return "NEWSTYLE.OPT_META_CONTEXT.SEND_NRQUERIES" ": " "Send newstyle NBD_OPT_SET_META_CONTEXT number of queries"; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY: return "NEWSTYLE.OPT_META_CONTEXT.PREPARE_NEXT_QUERY" ": " "Prepare to send newstyle NBD_OPT_SET_META_CONTEXT query"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN: return "NEWSTYLE.OPT_META_CONTEXT.SEND_QUERYLEN" ": " "Send newstyle NBD_OPT_SET_META_CONTEXT query length"; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY: return "NEWSTYLE.OPT_META_CONTEXT.SEND_QUERY" ": " "Send newstyle NBD_OPT_SET_META_CONTEXT query"; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY: return "NEWSTYLE.OPT_META_CONTEXT.PREPARE_FOR_REPLY" ": " "Prepare to receive newstyle NBD_OPT_SET_META_CONTEXT option reply"; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY: return "NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY" ": " "Receive newstyle NBD_OPT_SET_META_CONTEXT option reply"; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY_PAYLOAD" ": " "Receive newstyle NBD_OPT_SET_META_CONTEXT option reply payload"; case STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY: return "NEWSTYLE.OPT_META_CONTEXT.CHECK_REPLY" ": " "Check newstyle NBD_OPT_SET_META_CONTEXT option reply"; case STATE_NEWSTYLE_OPT_GO_START: return "NEWSTYLE.OPT_GO.START" ": " "Try to send newstyle NBD_OPT_GO to end handshake"; case STATE_NEWSTYLE_OPT_GO_SEND: return "NEWSTYLE.OPT_GO.SEND" ": " "Send newstyle NBD_OPT_GO to end handshake"; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN: return "NEWSTYLE.OPT_GO.SEND_EXPORTNAMELEN" ": " "Send newstyle NBD_OPT_GO export name length"; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORT: return "NEWSTYLE.OPT_GO.SEND_EXPORT" ": " "Send newstyle NBD_OPT_GO export name"; case STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS: return "NEWSTYLE.OPT_GO.SEND_NRINFOS" ": " "Send newstyle NBD_OPT_GO number of infos"; case STATE_NEWSTYLE_OPT_GO_SEND_INFO: return "NEWSTYLE.OPT_GO.SEND_INFO" ": " "Send newstyle NBD_OPT_GO request for NBD_INFO_BLOCK_SIZE"; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY: return "NEWSTYLE.OPT_GO.RECV_REPLY" ": " "Receive newstyle NBD_OPT_GO reply"; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_GO.RECV_REPLY_PAYLOAD" ": " "Receive newstyle NBD_OPT_GO reply payload"; case STATE_NEWSTYLE_OPT_GO_CHECK_REPLY: return "NEWSTYLE.OPT_GO.CHECK_REPLY" ": " "Check newstyle NBD_OPT_GO reply"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_START: return "NEWSTYLE.OPT_EXPORT_NAME.START" ": " "Try to send newstyle NBD_OPT_EXPORT_NAME to end handshake"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND: return "NEWSTYLE.OPT_EXPORT_NAME.SEND" ": " "Send newstyle NBD_OPT_EXPORT_NAME to end handshake"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT: return "NEWSTYLE.OPT_EXPORT_NAME.SEND_EXPORT" ": " "Send newstyle NBD_OPT_EXPORT_NAME export name"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY: return "NEWSTYLE.OPT_EXPORT_NAME.RECV_REPLY" ": " "Receive newstyle NBD_OPT_EXPORT_NAME reply"; case STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY: return "NEWSTYLE.OPT_EXPORT_NAME.CHECK_REPLY" ": " "Check newstyle NBD_OPT_EXPORT_NAME reply"; case STATE_NEWSTYLE_OPT_LIST_START: return "NEWSTYLE.OPT_LIST.START" ": " "Start listing exports if in list mode."; case STATE_NEWSTYLE_OPT_LIST_SEND: return "NEWSTYLE.OPT_LIST.SEND" ": " "Send newstyle NBD_OPT_LIST to begin listing exports"; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY: return "NEWSTYLE.OPT_LIST.RECV_REPLY" ": " "Receive NBD_REP_SERVER reply"; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD: return "NEWSTYLE.OPT_LIST.RECV_REPLY_PAYLOAD" ": " "Receive NBD_REP_SERVER reply payload"; case STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY: return "NEWSTYLE.OPT_LIST.CHECK_REPLY" ": " "Check NBD_REP_SERVER reply"; case STATE_NEWSTYLE_PREPARE_OPT_ABORT: return "NEWSTYLE.PREPARE_OPT_ABORT" ": " "Prepare to send NBD_OPT_ABORT"; case STATE_NEWSTYLE_SEND_OPT_ABORT: return "NEWSTYLE.SEND_OPT_ABORT" ": " "Send NBD_OPT_ABORT to end negotiation"; case STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN: return "NEWSTYLE.SEND_OPTION_SHUTDOWN" ": " "Sending write shutdown notification to the remote server"; case STATE_NEWSTYLE_FINISHED: return "NEWSTYLE.FINISHED" ": " "Finish off newstyle negotiation"; case STATE_NEGOTIATING: return "NEGOTIATING" ": " "Connection is ready to negotiate an NBD option"; case STATE_READY: return "READY" ": " "Connection is ready to process NBD commands"; case STATE_ISSUE_COMMAND_START: return "ISSUE_COMMAND.START" ": " "Begin issuing a command to the remote server"; case STATE_ISSUE_COMMAND_SEND_REQUEST: return "ISSUE_COMMAND.SEND_REQUEST" ": " "Sending a request to the remote server"; case STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST: return "ISSUE_COMMAND.PAUSE_SEND_REQUEST" ": " "Interrupt send request to receive an earlier command's reply"; case STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD: return "ISSUE_COMMAND.PREPARE_WRITE_PAYLOAD" ": " "Prepare the write payload to send to the remote server"; case STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD: return "ISSUE_COMMAND.SEND_WRITE_PAYLOAD" ": " "Sending the write payload to the remote server"; case STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD: return "ISSUE_COMMAND.PAUSE_WRITE_PAYLOAD" ": " "Interrupt write payload to receive an earlier command's reply"; case STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN: return "ISSUE_COMMAND.SEND_WRITE_SHUTDOWN" ": " "Sending write shutdown notification to the remote server"; case STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN: return "ISSUE_COMMAND.PAUSE_WRITE_SHUTDOWN" ": " "Interrupt write shutdown to receive an earlier command's reply"; case STATE_ISSUE_COMMAND_FINISH: return "ISSUE_COMMAND.FINISH" ": " "Finish issuing a command"; case STATE_REPLY_START: return "REPLY.START" ": " "Prepare to receive a reply from the remote server"; case STATE_REPLY_RECV_REPLY: return "REPLY.RECV_REPLY" ": " "Receive a reply from the remote server"; case STATE_REPLY_CHECK_REPLY_MAGIC: return "REPLY.CHECK_REPLY_MAGIC" ": " "Check if the reply has expected magic"; case STATE_REPLY_RECV_STRUCTURED_REMAINING: return "REPLY.RECV_STRUCTURED_REMAINING" ": " "Receiving the remaining part of a structured reply header"; case STATE_REPLY_SIMPLE_REPLY_START: return "REPLY.SIMPLE_REPLY.START" ": " "Parse a simple reply from the server"; case STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD: return "REPLY.SIMPLE_REPLY.RECV_READ_PAYLOAD" ": " "Receiving the read payload for a simple reply"; case STATE_REPLY_CHUNK_REPLY_START: return "REPLY.CHUNK_REPLY.START" ": " "Start parsing a chunk reply payload from the server"; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR: return "REPLY.CHUNK_REPLY.RECV_ERROR" ": " "Receive a chunk reply error header"; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE: return "REPLY.CHUNK_REPLY.RECV_ERROR_MESSAGE" ": " "Receive a chunk reply error message"; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL: return "REPLY.CHUNK_REPLY.RECV_ERROR_TAIL" ": " "Receive a chunk reply error tail"; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA: return "REPLY.CHUNK_REPLY.RECV_OFFSET_DATA" ": " "Receive a chunk reply offset-data header"; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA: return "REPLY.CHUNK_REPLY.RECV_OFFSET_DATA_DATA" ": " "Receive a chunk reply offset-data block of data"; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE: return "REPLY.CHUNK_REPLY.RECV_OFFSET_HOLE" ": " "Receive a chunk reply offset-hole header"; case STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER: return "REPLY.CHUNK_REPLY.RECV_BS_HEADER" ": " "Receive header of a chunk reply block-status payload"; case STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES: return "REPLY.CHUNK_REPLY.RECV_BS_ENTRIES" ": " "Receive entries array of chunk reply block-status payload"; case STATE_REPLY_CHUNK_REPLY_RESYNC: return "REPLY.CHUNK_REPLY.RESYNC" ": " "Ignore payload of an unexpected chunk reply"; case STATE_REPLY_CHUNK_REPLY_FINISH: return "REPLY.CHUNK_REPLY.FINISH" ": " "Finish receiving a chunk reply"; case STATE_REPLY_FINISH_COMMAND: return "REPLY.FINISH_COMMAND" ": " "Finish receiving a command"; case STATE_DEAD: return "DEAD" ": " "Connection is in an unrecoverable error state, can only be closed"; case STATE_CLOSED: return "CLOSED" ": " "Connection is closed"; } return NULL; } /* Map a state to its group name. */ enum state_group nbd_internal_state_group (enum state state) { switch (state) { case STATE_START: return GROUP_TOP; case STATE_CONNECT_START: return GROUP_CONNECT; case STATE_CONNECT_CONNECTING: return GROUP_CONNECT; case STATE_CONNECT_TCP_START: return GROUP_CONNECT_TCP; case STATE_CONNECT_TCP_CONNECT: return GROUP_CONNECT_TCP; case STATE_CONNECT_TCP_CONNECTING: return GROUP_CONNECT_TCP; case STATE_CONNECT_TCP_NEXT_ADDRESS: return GROUP_CONNECT_TCP; case STATE_CONNECT_COMMAND_START: return GROUP_CONNECT_COMMAND; case STATE_CONNECT_SA_START: return GROUP_CONNECT_SA; case STATE_MAGIC_START: return GROUP_MAGIC; case STATE_MAGIC_RECV_MAGIC: return GROUP_MAGIC; case STATE_MAGIC_CHECK_MAGIC: return GROUP_MAGIC; case STATE_OLDSTYLE_START: return GROUP_OLDSTYLE; case STATE_OLDSTYLE_RECV_REMAINING: return GROUP_OLDSTYLE; case STATE_OLDSTYLE_CHECK: return GROUP_OLDSTYLE; case STATE_NEWSTYLE_START: return GROUP_NEWSTYLE; case STATE_NEWSTYLE_RECV_GFLAGS: return GROUP_NEWSTYLE; case STATE_NEWSTYLE_CHECK_GFLAGS: return GROUP_NEWSTYLE; case STATE_NEWSTYLE_SEND_CFLAGS: return GROUP_NEWSTYLE; case STATE_NEWSTYLE_OPT_STARTTLS_START: return GROUP_NEWSTYLE_OPT_STARTTLS; case STATE_NEWSTYLE_OPT_STARTTLS_SEND: return GROUP_NEWSTYLE_OPT_STARTTLS; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY: return GROUP_NEWSTYLE_OPT_STARTTLS; case STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD: return GROUP_NEWSTYLE_OPT_STARTTLS; case STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY: return GROUP_NEWSTYLE_OPT_STARTTLS; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ: return GROUP_NEWSTYLE_OPT_STARTTLS; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE: return GROUP_NEWSTYLE_OPT_STARTTLS; case STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE: return GROUP_NEWSTYLE_OPT_STARTTLS; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START: return GROUP_NEWSTYLE_OPT_EXTENDED_HEADERS; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND: return GROUP_NEWSTYLE_OPT_EXTENDED_HEADERS; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY: return GROUP_NEWSTYLE_OPT_EXTENDED_HEADERS; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD: return GROUP_NEWSTYLE_OPT_EXTENDED_HEADERS; case STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY: return GROUP_NEWSTYLE_OPT_EXTENDED_HEADERS; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START: return GROUP_NEWSTYLE_OPT_STRUCTURED_REPLY; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND: return GROUP_NEWSTYLE_OPT_STRUCTURED_REPLY; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY: return GROUP_NEWSTYLE_OPT_STRUCTURED_REPLY; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD: return GROUP_NEWSTYLE_OPT_STRUCTURED_REPLY; case STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY: return GROUP_NEWSTYLE_OPT_STRUCTURED_REPLY; case STATE_NEWSTYLE_OPT_META_CONTEXT_START: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY: return GROUP_NEWSTYLE_OPT_META_CONTEXT; case STATE_NEWSTYLE_OPT_GO_START: return GROUP_NEWSTYLE_OPT_GO; case STATE_NEWSTYLE_OPT_GO_SEND: return GROUP_NEWSTYLE_OPT_GO; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN: return GROUP_NEWSTYLE_OPT_GO; case STATE_NEWSTYLE_OPT_GO_SEND_EXPORT: return GROUP_NEWSTYLE_OPT_GO; case STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS: return GROUP_NEWSTYLE_OPT_GO; case STATE_NEWSTYLE_OPT_GO_SEND_INFO: return GROUP_NEWSTYLE_OPT_GO; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY: return GROUP_NEWSTYLE_OPT_GO; case STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD: return GROUP_NEWSTYLE_OPT_GO; case STATE_NEWSTYLE_OPT_GO_CHECK_REPLY: return GROUP_NEWSTYLE_OPT_GO; case STATE_NEWSTYLE_OPT_EXPORT_NAME_START: return GROUP_NEWSTYLE_OPT_EXPORT_NAME; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND: return GROUP_NEWSTYLE_OPT_EXPORT_NAME; case STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT: return GROUP_NEWSTYLE_OPT_EXPORT_NAME; case STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY: return GROUP_NEWSTYLE_OPT_EXPORT_NAME; case STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY: return GROUP_NEWSTYLE_OPT_EXPORT_NAME; case STATE_NEWSTYLE_OPT_LIST_START: return GROUP_NEWSTYLE_OPT_LIST; case STATE_NEWSTYLE_OPT_LIST_SEND: return GROUP_NEWSTYLE_OPT_LIST; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY: return GROUP_NEWSTYLE_OPT_LIST; case STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD: return GROUP_NEWSTYLE_OPT_LIST; case STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY: return GROUP_NEWSTYLE_OPT_LIST; case STATE_NEWSTYLE_PREPARE_OPT_ABORT: return GROUP_NEWSTYLE; case STATE_NEWSTYLE_SEND_OPT_ABORT: return GROUP_NEWSTYLE; case STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN: return GROUP_NEWSTYLE; case STATE_NEWSTYLE_FINISHED: return GROUP_NEWSTYLE; case STATE_NEGOTIATING: return GROUP_TOP; case STATE_READY: return GROUP_TOP; case STATE_ISSUE_COMMAND_START: return GROUP_ISSUE_COMMAND; case STATE_ISSUE_COMMAND_SEND_REQUEST: return GROUP_ISSUE_COMMAND; case STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST: return GROUP_ISSUE_COMMAND; case STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD: return GROUP_ISSUE_COMMAND; case STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD: return GROUP_ISSUE_COMMAND; case STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD: return GROUP_ISSUE_COMMAND; case STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN: return GROUP_ISSUE_COMMAND; case STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN: return GROUP_ISSUE_COMMAND; case STATE_ISSUE_COMMAND_FINISH: return GROUP_ISSUE_COMMAND; case STATE_REPLY_START: return GROUP_REPLY; case STATE_REPLY_RECV_REPLY: return GROUP_REPLY; case STATE_REPLY_CHECK_REPLY_MAGIC: return GROUP_REPLY; case STATE_REPLY_RECV_STRUCTURED_REMAINING: return GROUP_REPLY; case STATE_REPLY_SIMPLE_REPLY_START: return GROUP_REPLY_SIMPLE_REPLY; case STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD: return GROUP_REPLY_SIMPLE_REPLY; case STATE_REPLY_CHUNK_REPLY_START: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_RESYNC: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_CHUNK_REPLY_FINISH: return GROUP_REPLY_CHUNK_REPLY; case STATE_REPLY_FINISH_COMMAND: return GROUP_REPLY; case STATE_DEAD: return GROUP_TOP; case STATE_CLOSED: return GROUP_TOP; default: abort (); /* Should never happen, but keeps GCC happy. */ } } /* Map a state group to its parent group. */ enum state_group nbd_internal_state_group_parent (enum state_group group) { switch (group) { case GROUP_TOP: return GROUP_TOP; case GROUP_CONNECT: return GROUP_TOP; case GROUP_CONNECT_TCP: return GROUP_TOP; case GROUP_CONNECT_COMMAND: return GROUP_TOP; case GROUP_CONNECT_SA: return GROUP_TOP; case GROUP_MAGIC: return GROUP_TOP; case GROUP_OLDSTYLE: return GROUP_TOP; case GROUP_NEWSTYLE: return GROUP_TOP; case GROUP_NEWSTYLE_OPT_STARTTLS: return GROUP_NEWSTYLE; case GROUP_NEWSTYLE_OPT_EXTENDED_HEADERS: return GROUP_NEWSTYLE; case GROUP_NEWSTYLE_OPT_STRUCTURED_REPLY: return GROUP_NEWSTYLE; case GROUP_NEWSTYLE_OPT_META_CONTEXT: return GROUP_NEWSTYLE; case GROUP_NEWSTYLE_OPT_GO: return GROUP_NEWSTYLE; case GROUP_NEWSTYLE_OPT_EXPORT_NAME: return GROUP_NEWSTYLE; case GROUP_NEWSTYLE_OPT_LIST: return GROUP_NEWSTYLE; case GROUP_ISSUE_COMMAND: return GROUP_TOP; case GROUP_REPLY: return GROUP_TOP; case GROUP_REPLY_SIMPLE_REPLY: return GROUP_REPLY; case GROUP_REPLY_CHUNK_REPLY: return GROUP_REPLY; default: abort (); /* Should never happen, but keeps GCC happy. */ } }; libnbd-1.20.3/lib/states.h0000444000175000017500000006677714603303744010763 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator generator/states*.c * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ enum state { /* START: Handle after being initially created */ STATE_START, /* CONNECT.START: Initial call to connect(2) on the socket */ STATE_CONNECT_START, /* CONNECT.CONNECTING: Connecting to the remote server */ STATE_CONNECT_CONNECTING, /* CONNECT_TCP.START: Connect to a remote TCP server */ STATE_CONNECT_TCP_START, /* CONNECT_TCP.CONNECT: Initial call to connect(2) on a TCP socket */ STATE_CONNECT_TCP_CONNECT, /* CONNECT_TCP.CONNECTING: Connecting to the remote server over a TCP socket */ STATE_CONNECT_TCP_CONNECTING, /* CONNECT_TCP.NEXT_ADDRESS: Connecting to the next address over a TCP socket */ STATE_CONNECT_TCP_NEXT_ADDRESS, /* CONNECT_COMMAND.START: Connect to a subprocess */ STATE_CONNECT_COMMAND_START, /* CONNECT_SA.START: Connect to a subprocess with systemd socket activation */ STATE_CONNECT_SA_START, /* MAGIC.START: Prepare to receive the magic identification from remote */ STATE_MAGIC_START, /* MAGIC.RECV_MAGIC: Receive initial magic identification from remote */ STATE_MAGIC_RECV_MAGIC, /* MAGIC.CHECK_MAGIC: Check magic and version sent by remote */ STATE_MAGIC_CHECK_MAGIC, /* OLDSTYLE.START: Prepare to receive remainder of oldstyle header */ STATE_OLDSTYLE_START, /* OLDSTYLE.RECV_REMAINING: Receive remainder of oldstyle header */ STATE_OLDSTYLE_RECV_REMAINING, /* OLDSTYLE.CHECK: Check oldstyle header */ STATE_OLDSTYLE_CHECK, /* NEWSTYLE.START: Prepare to receive newstyle gflags from remote */ STATE_NEWSTYLE_START, /* NEWSTYLE.RECV_GFLAGS: Receive newstyle gflags from remote */ STATE_NEWSTYLE_RECV_GFLAGS, /* NEWSTYLE.CHECK_GFLAGS: Check global flags sent by remote */ STATE_NEWSTYLE_CHECK_GFLAGS, /* NEWSTYLE.SEND_CFLAGS: Send newstyle client flags to remote */ STATE_NEWSTYLE_SEND_CFLAGS, /* NEWSTYLE.OPT_STARTTLS.START: Try to send newstyle NBD_OPT_STARTTLS to * upgrade to TLS */ STATE_NEWSTYLE_OPT_STARTTLS_START, /* NEWSTYLE.OPT_STARTTLS.SEND: Send newstyle NBD_OPT_STARTTLS to upgrade to * TLS */ STATE_NEWSTYLE_OPT_STARTTLS_SEND, /* NEWSTYLE.OPT_STARTTLS.RECV_REPLY: Receive newstyle NBD_OPT_STARTTLS reply */ STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY, /* NEWSTYLE.OPT_STARTTLS.RECV_REPLY_PAYLOAD: Receive any newstyle * NBD_OPT_STARTTLS reply payload */ STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD, /* NEWSTYLE.OPT_STARTTLS.CHECK_REPLY: Check newstyle NBD_OPT_STARTTLS reply */ STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY, /* NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_READ: TLS handshake (reading) */ STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ, /* NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_WRITE: TLS handshake (writing) */ STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE, /* NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_DONE: TLS handshake complete */ STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE, /* NEWSTYLE.OPT_EXTENDED_HEADERS.START: Try to negotiate newstyle * NBD_OPT_EXTENDED_HEADERS */ STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START, /* NEWSTYLE.OPT_EXTENDED_HEADERS.SEND: Send newstyle NBD_OPT_EXTENDED_HEADERS * negotiation request */ STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND, /* NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY: Receive newstyle * NBD_OPT_EXTENDED_HEADERS option reply */ STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY, /* NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY_PAYLOAD: Receive any newstyle * NBD_OPT_EXTENDED_HEADERS reply payload */ STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD, /* NEWSTYLE.OPT_EXTENDED_HEADERS.CHECK_REPLY: Check newstyle * NBD_OPT_EXTENDED_HEADERS option reply */ STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY, /* NEWSTYLE.OPT_STRUCTURED_REPLY.START: Try to negotiate newstyle * NBD_OPT_STRUCTURED_REPLY */ STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START, /* NEWSTYLE.OPT_STRUCTURED_REPLY.SEND: Send newstyle NBD_OPT_STRUCTURED_REPLY * negotiation request */ STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND, /* NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY: Receive newstyle * NBD_OPT_STRUCTURED_REPLY option reply */ STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY, /* NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY_PAYLOAD: Receive any newstyle * NBD_OPT_STRUCTURED_REPLY reply payload */ STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD, /* NEWSTYLE.OPT_STRUCTURED_REPLY.CHECK_REPLY: Check newstyle * NBD_OPT_STRUCTURED_REPLY option reply */ STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY, /* NEWSTYLE.OPT_META_CONTEXT.START: Try to negotiate newstyle * NBD_OPT_SET_META_CONTEXT */ STATE_NEWSTYLE_OPT_META_CONTEXT_START, /* NEWSTYLE.OPT_META_CONTEXT.SEND: Send newstyle NBD_OPT_SET_META_CONTEXT */ STATE_NEWSTYLE_OPT_META_CONTEXT_SEND, /* NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAMELEN: Send newstyle * NBD_OPT_SET_META_CONTEXT export name length */ STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN, /* NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAME: Send newstyle * NBD_OPT_SET_META_CONTEXT export name */ STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME, /* NEWSTYLE.OPT_META_CONTEXT.SEND_NRQUERIES: Send newstyle * NBD_OPT_SET_META_CONTEXT number of queries */ STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES, /* NEWSTYLE.OPT_META_CONTEXT.PREPARE_NEXT_QUERY: Prepare to send newstyle * NBD_OPT_SET_META_CONTEXT query */ STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY, /* NEWSTYLE.OPT_META_CONTEXT.SEND_QUERYLEN: Send newstyle * NBD_OPT_SET_META_CONTEXT query length */ STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN, /* NEWSTYLE.OPT_META_CONTEXT.SEND_QUERY: Send newstyle * NBD_OPT_SET_META_CONTEXT query */ STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY, /* NEWSTYLE.OPT_META_CONTEXT.PREPARE_FOR_REPLY: Prepare to receive newstyle * NBD_OPT_SET_META_CONTEXT option reply */ STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY, /* NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY: Receive newstyle * NBD_OPT_SET_META_CONTEXT option reply */ STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY, /* NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY_PAYLOAD: Receive newstyle * NBD_OPT_SET_META_CONTEXT option reply payload */ STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD, /* NEWSTYLE.OPT_META_CONTEXT.CHECK_REPLY: Check newstyle * NBD_OPT_SET_META_CONTEXT option reply */ STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY, /* NEWSTYLE.OPT_GO.START: Try to send newstyle NBD_OPT_GO to end handshake */ STATE_NEWSTYLE_OPT_GO_START, /* NEWSTYLE.OPT_GO.SEND: Send newstyle NBD_OPT_GO to end handshake */ STATE_NEWSTYLE_OPT_GO_SEND, /* NEWSTYLE.OPT_GO.SEND_EXPORTNAMELEN: Send newstyle NBD_OPT_GO export name * length */ STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN, /* NEWSTYLE.OPT_GO.SEND_EXPORT: Send newstyle NBD_OPT_GO export name */ STATE_NEWSTYLE_OPT_GO_SEND_EXPORT, /* NEWSTYLE.OPT_GO.SEND_NRINFOS: Send newstyle NBD_OPT_GO number of infos */ STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS, /* NEWSTYLE.OPT_GO.SEND_INFO: Send newstyle NBD_OPT_GO request for * NBD_INFO_BLOCK_SIZE */ STATE_NEWSTYLE_OPT_GO_SEND_INFO, /* NEWSTYLE.OPT_GO.RECV_REPLY: Receive newstyle NBD_OPT_GO reply */ STATE_NEWSTYLE_OPT_GO_RECV_REPLY, /* NEWSTYLE.OPT_GO.RECV_REPLY_PAYLOAD: Receive newstyle NBD_OPT_GO reply * payload */ STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD, /* NEWSTYLE.OPT_GO.CHECK_REPLY: Check newstyle NBD_OPT_GO reply */ STATE_NEWSTYLE_OPT_GO_CHECK_REPLY, /* NEWSTYLE.OPT_EXPORT_NAME.START: Try to send newstyle NBD_OPT_EXPORT_NAME to * end handshake */ STATE_NEWSTYLE_OPT_EXPORT_NAME_START, /* NEWSTYLE.OPT_EXPORT_NAME.SEND: Send newstyle NBD_OPT_EXPORT_NAME to end * handshake */ STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND, /* NEWSTYLE.OPT_EXPORT_NAME.SEND_EXPORT: Send newstyle NBD_OPT_EXPORT_NAME * export name */ STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT, /* NEWSTYLE.OPT_EXPORT_NAME.RECV_REPLY: Receive newstyle NBD_OPT_EXPORT_NAME * reply */ STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY, /* NEWSTYLE.OPT_EXPORT_NAME.CHECK_REPLY: Check newstyle NBD_OPT_EXPORT_NAME * reply */ STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY, /* NEWSTYLE.OPT_LIST.START: Start listing exports if in list mode. */ STATE_NEWSTYLE_OPT_LIST_START, /* NEWSTYLE.OPT_LIST.SEND: Send newstyle NBD_OPT_LIST to begin listing exports */ STATE_NEWSTYLE_OPT_LIST_SEND, /* NEWSTYLE.OPT_LIST.RECV_REPLY: Receive NBD_REP_SERVER reply */ STATE_NEWSTYLE_OPT_LIST_RECV_REPLY, /* NEWSTYLE.OPT_LIST.RECV_REPLY_PAYLOAD: Receive NBD_REP_SERVER reply payload */ STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD, /* NEWSTYLE.OPT_LIST.CHECK_REPLY: Check NBD_REP_SERVER reply */ STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY, /* NEWSTYLE.PREPARE_OPT_ABORT: Prepare to send NBD_OPT_ABORT */ STATE_NEWSTYLE_PREPARE_OPT_ABORT, /* NEWSTYLE.SEND_OPT_ABORT: Send NBD_OPT_ABORT to end negotiation */ STATE_NEWSTYLE_SEND_OPT_ABORT, /* NEWSTYLE.SEND_OPTION_SHUTDOWN: Sending write shutdown notification to the * remote server */ STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN, /* NEWSTYLE.FINISHED: Finish off newstyle negotiation */ STATE_NEWSTYLE_FINISHED, /* NEGOTIATING: Connection is ready to negotiate an NBD option */ STATE_NEGOTIATING, /* READY: Connection is ready to process NBD commands */ STATE_READY, /* ISSUE_COMMAND.START: Begin issuing a command to the remote server */ STATE_ISSUE_COMMAND_START, /* ISSUE_COMMAND.SEND_REQUEST: Sending a request to the remote server */ STATE_ISSUE_COMMAND_SEND_REQUEST, /* ISSUE_COMMAND.PAUSE_SEND_REQUEST: Interrupt send request to receive an * earlier command's reply */ STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST, /* ISSUE_COMMAND.PREPARE_WRITE_PAYLOAD: Prepare the write payload to send to * the remote server */ STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD, /* ISSUE_COMMAND.SEND_WRITE_PAYLOAD: Sending the write payload to the remote * server */ STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD, /* ISSUE_COMMAND.PAUSE_WRITE_PAYLOAD: Interrupt write payload to receive an * earlier command's reply */ STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD, /* ISSUE_COMMAND.SEND_WRITE_SHUTDOWN: Sending write shutdown notification to * the remote server */ STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN, /* ISSUE_COMMAND.PAUSE_WRITE_SHUTDOWN: Interrupt write shutdown to receive an * earlier command's reply */ STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN, /* ISSUE_COMMAND.FINISH: Finish issuing a command */ STATE_ISSUE_COMMAND_FINISH, /* REPLY.START: Prepare to receive a reply from the remote server */ STATE_REPLY_START, /* REPLY.RECV_REPLY: Receive a reply from the remote server */ STATE_REPLY_RECV_REPLY, /* REPLY.CHECK_REPLY_MAGIC: Check if the reply has expected magic */ STATE_REPLY_CHECK_REPLY_MAGIC, /* REPLY.RECV_STRUCTURED_REMAINING: Receiving the remaining part of a * structured reply header */ STATE_REPLY_RECV_STRUCTURED_REMAINING, /* REPLY.SIMPLE_REPLY.START: Parse a simple reply from the server */ STATE_REPLY_SIMPLE_REPLY_START, /* REPLY.SIMPLE_REPLY.RECV_READ_PAYLOAD: Receiving the read payload for a * simple reply */ STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD, /* REPLY.CHUNK_REPLY.START: Start parsing a chunk reply payload from the * server */ STATE_REPLY_CHUNK_REPLY_START, /* REPLY.CHUNK_REPLY.RECV_ERROR: Receive a chunk reply error header */ STATE_REPLY_CHUNK_REPLY_RECV_ERROR, /* REPLY.CHUNK_REPLY.RECV_ERROR_MESSAGE: Receive a chunk reply error message */ STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE, /* REPLY.CHUNK_REPLY.RECV_ERROR_TAIL: Receive a chunk reply error tail */ STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL, /* REPLY.CHUNK_REPLY.RECV_OFFSET_DATA: Receive a chunk reply offset-data * header */ STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA, /* REPLY.CHUNK_REPLY.RECV_OFFSET_DATA_DATA: Receive a chunk reply offset-data * block of data */ STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA, /* REPLY.CHUNK_REPLY.RECV_OFFSET_HOLE: Receive a chunk reply offset-hole * header */ STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE, /* REPLY.CHUNK_REPLY.RECV_BS_HEADER: Receive header of a chunk reply * block-status payload */ STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER, /* REPLY.CHUNK_REPLY.RECV_BS_ENTRIES: Receive entries array of chunk reply * block-status payload */ STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES, /* REPLY.CHUNK_REPLY.RESYNC: Ignore payload of an unexpected chunk reply */ STATE_REPLY_CHUNK_REPLY_RESYNC, /* REPLY.CHUNK_REPLY.FINISH: Finish receiving a chunk reply */ STATE_REPLY_CHUNK_REPLY_FINISH, /* REPLY.FINISH_COMMAND: Finish receiving a command */ STATE_REPLY_FINISH_COMMAND, /* DEAD: Connection is in an unrecoverable error state, can only be closed */ STATE_DEAD, /* CLOSED: Connection is closed */ STATE_CLOSED, }; /* These correspond to the external events in generator/generator. */ enum external_event { notify_read, notify_write, cmd_create, cmd_connect_sockaddr, cmd_connect_tcp, cmd_connect_command, cmd_connect_sa, cmd_connect_socket, cmd_issue, }; /* State groups. */ enum state_group { GROUP_TOP, GROUP_CONNECT, GROUP_CONNECT_TCP, GROUP_CONNECT_COMMAND, GROUP_CONNECT_SA, GROUP_MAGIC, GROUP_OLDSTYLE, GROUP_NEWSTYLE, GROUP_NEWSTYLE_OPT_STARTTLS, GROUP_NEWSTYLE_OPT_EXTENDED_HEADERS, GROUP_NEWSTYLE_OPT_STRUCTURED_REPLY, GROUP_NEWSTYLE_OPT_META_CONTEXT, GROUP_NEWSTYLE_OPT_GO, GROUP_NEWSTYLE_OPT_EXPORT_NAME, GROUP_NEWSTYLE_OPT_LIST, GROUP_ISSUE_COMMAND, GROUP_REPLY, GROUP_REPLY_SIMPLE_REPLY, GROUP_REPLY_CHUNK_REPLY, }; /* State transitions defined in states.c. */ extern int nbd_internal_enter_STATE_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_CONNECT_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_CONNECT_CONNECTING ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_CONNECT_TCP_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_CONNECT_TCP_CONNECT ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_CONNECT_TCP_CONNECTING ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_CONNECT_TCP_NEXT_ADDRESS ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_CONNECT_COMMAND_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_CONNECT_SA_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_MAGIC_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_MAGIC_RECV_MAGIC ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_MAGIC_CHECK_MAGIC ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_OLDSTYLE_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_OLDSTYLE_RECV_REMAINING ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_OLDSTYLE_CHECK ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_RECV_GFLAGS ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_CHECK_GFLAGS ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_SEND_CFLAGS ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_SEND ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_READ ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_WRITE ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STARTTLS_TLS_HANDSHAKE_DONE ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_SEND ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXTENDED_HEADERS_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_SEND ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_STRUCTURED_REPLY_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAMELEN ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_EXPORTNAME ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_NRQUERIES ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_NEXT_QUERY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERYLEN ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_SEND_QUERY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_PREPARE_FOR_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_META_CONTEXT_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORTNAMELEN ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_EXPORT ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_NRINFOS ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_SEND_INFO ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_GO_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_SEND_EXPORT ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_RECV_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_EXPORT_NAME_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_SEND ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_RECV_REPLY_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_OPT_LIST_CHECK_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_PREPARE_OPT_ABORT ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_SEND_OPT_ABORT ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_SEND_OPTION_SHUTDOWN ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEWSTYLE_FINISHED ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_NEGOTIATING ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_READY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_ISSUE_COMMAND_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_ISSUE_COMMAND_SEND_REQUEST ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_ISSUE_COMMAND_PAUSE_SEND_REQUEST ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_ISSUE_COMMAND_PREPARE_WRITE_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_ISSUE_COMMAND_SEND_WRITE_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_ISSUE_COMMAND_SEND_WRITE_SHUTDOWN ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_ISSUE_COMMAND_PAUSE_WRITE_SHUTDOWN ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_ISSUE_COMMAND_FINISH ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_RECV_REPLY ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHECK_REPLY_MAGIC ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_RECV_STRUCTURED_REMAINING ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_SIMPLE_REPLY_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_SIMPLE_REPLY_RECV_READ_PAYLOAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_START ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_MESSAGE ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_ERROR_TAIL ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_DATA_DATA ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_OFFSET_HOLE ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_HEADER ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_RESYNC ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_CHUNK_REPLY_FINISH ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_REPLY_FINISH_COMMAND ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_DEAD ( struct nbd_handle *h, bool *blocked ); extern int nbd_internal_enter_STATE_CLOSED ( struct nbd_handle *h, bool *blocked ); libnbd-1.20.3/lib/unlocked.h0000444000175000017500000006121314603303744011240 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_UNLOCKED_H #define LIBNBD_UNLOCKED_H extern int nbd_unlocked_set_debug ( struct nbd_handle *h, bool debug ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_debug ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_debug_callback ( struct nbd_handle *h, nbd_debug_callback *debug_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_clear_debug_callback ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern uint64_t nbd_unlocked_stats_bytes_sent ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern uint64_t nbd_unlocked_stats_chunks_sent ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern uint64_t nbd_unlocked_stats_bytes_received ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern uint64_t nbd_unlocked_stats_chunks_received ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_handle_name ( struct nbd_handle *h, const char *handle_name ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern char * nbd_unlocked_get_handle_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); extern uintptr_t nbd_unlocked_set_private_data ( struct nbd_handle *h, uintptr_t private_data ) LIBNBD_ATTRIBUTE_NONNULL (1); extern uintptr_t nbd_unlocked_get_private_data ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_export_name ( struct nbd_handle *h, const char *export_name ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern char * nbd_unlocked_get_export_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_request_block_size ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_request_block_size ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_full_info ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_full_info ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern char * nbd_unlocked_get_canonical_export_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); extern char * nbd_unlocked_get_export_description ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_tls ( struct nbd_handle *h, int tls ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_tls ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_tls_negotiated ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_tls_certificates ( struct nbd_handle *h, const char *dir ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_set_tls_verify_peer ( struct nbd_handle *h, bool verify ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_tls_verify_peer ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_tls_username ( struct nbd_handle *h, const char *username ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern char * nbd_unlocked_get_tls_username ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_tls_psk_file ( struct nbd_handle *h, const char *filename ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_set_request_extended_headers ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_request_extended_headers ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_extended_headers_negotiated ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_request_structured_replies ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_request_structured_replies ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_structured_replies_negotiated ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_request_meta_context ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_request_meta_context ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_handshake_flags ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern uint32_t nbd_unlocked_get_handshake_flags ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_pread_initialize ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_pread_initialize ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_strict_mode ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern uint32_t nbd_unlocked_get_strict_mode ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_opt_mode ( struct nbd_handle *h, bool enable ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_get_opt_mode ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_go ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_abort ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_starttls ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_extended_headers ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_structured_reply ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_list ( struct nbd_handle *h, nbd_list_callback *list_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_info ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_list_meta_context ( struct nbd_handle *h, nbd_context_callback *context_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_list_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback *context_callback ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_opt_set_meta_context ( struct nbd_handle *h, nbd_context_callback *context_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_opt_set_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback *context_callback ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_add_meta_context ( struct nbd_handle *h, const char *name ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern ssize_t nbd_unlocked_get_nr_meta_contexts ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern char * nbd_unlocked_get_meta_context ( struct nbd_handle *h, size_t i ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_clear_meta_contexts ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_uri_allow_transports ( struct nbd_handle *h, uint32_t mask ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_uri_allow_tls ( struct nbd_handle *h, int tls ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_set_uri_allow_local_file ( struct nbd_handle *h, bool allow ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_connect_uri ( struct nbd_handle *h, const char *uri ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_connect_unix ( struct nbd_handle *h, const char *unixsocket ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_connect_vsock ( struct nbd_handle *h, uint32_t cid, uint32_t port ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_connect_tcp ( struct nbd_handle *h, const char *hostname, const char *port ) LIBNBD_ATTRIBUTE_NONNULL (1, 2, 3); extern int nbd_unlocked_connect_socket ( struct nbd_handle *h, int sock ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_connect_command ( struct nbd_handle *h, char **argv ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_connect_systemd_socket_activation ( struct nbd_handle *h, char **argv ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_set_socket_activation_name ( struct nbd_handle *h, const char *socket_name ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern char * nbd_unlocked_get_socket_activation_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_is_read_only ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_flush ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_fua ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_is_rotational ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_trim ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_zero ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_fast_zero ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_block_status_payload ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_df ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_multi_conn ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_cache ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_can_meta_context ( struct nbd_handle *h, const char *metacontext ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern const char * nbd_unlocked_get_protocol ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_get_size ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_get_block_size ( struct nbd_handle *h, int size_type ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_pread ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_pread_structured ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback *chunk_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_pwrite ( struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_shutdown ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_flush ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_trim ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_cache ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_zero ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_block_status ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback *extent_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_block_status_64 ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback *extent64_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_block_status_filter ( struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback *extent64_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 4); extern int nbd_unlocked_poll ( struct nbd_handle *h, int timeout ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_poll2 ( struct nbd_handle *h, int fd, int timeout ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_connect ( struct nbd_handle *h, const struct sockaddr *addr, socklen_t addrlen ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_aio_connect_uri ( struct nbd_handle *h, const char *uri ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_aio_connect_unix ( struct nbd_handle *h, const char *unixsocket ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_aio_connect_vsock ( struct nbd_handle *h, uint32_t cid, uint32_t port ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_connect_tcp ( struct nbd_handle *h, const char *hostname, const char *port ) LIBNBD_ATTRIBUTE_NONNULL (1, 2, 3); extern int nbd_unlocked_aio_connect_socket ( struct nbd_handle *h, int sock ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_connect_command ( struct nbd_handle *h, char **argv ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_aio_connect_systemd_socket_activation ( struct nbd_handle *h, char **argv ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_aio_opt_go ( struct nbd_handle *h, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_opt_abort ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_opt_starttls ( struct nbd_handle *h, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_opt_extended_headers ( struct nbd_handle *h, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_opt_structured_reply ( struct nbd_handle *h, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_opt_list ( struct nbd_handle *h, nbd_list_callback *list_callback, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_opt_info ( struct nbd_handle *h, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_opt_list_meta_context ( struct nbd_handle *h, nbd_context_callback *context_callback, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_opt_list_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback *context_callback, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_aio_opt_set_meta_context ( struct nbd_handle *h, nbd_context_callback *context_callback, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_opt_set_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback *context_callback, nbd_completion_callback *completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int64_t nbd_unlocked_aio_pread ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int64_t nbd_unlocked_aio_pread_structured ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback *chunk_callback, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int64_t nbd_unlocked_aio_pwrite ( struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); extern int nbd_unlocked_aio_disconnect ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_aio_flush ( struct nbd_handle *h, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_aio_trim ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_aio_cache ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_aio_zero ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_aio_block_status ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback *extent_callback, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_aio_block_status_64 ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback *extent64_callback, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_aio_block_status_filter ( struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback *extent64_callback, nbd_completion_callback *completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 4); extern int nbd_unlocked_aio_get_fd ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern unsigned nbd_unlocked_aio_get_direction ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_notify_read ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_notify_write ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_is_created ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_is_connecting ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_is_negotiating ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_is_ready ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_is_processing ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_is_dead ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_is_closed ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_command_completed ( struct nbd_handle *h, uint64_t cookie ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int64_t nbd_unlocked_aio_peek_command_completed ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_aio_in_flight ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern const char * nbd_unlocked_connection_state ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern const char * nbd_unlocked_get_package_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern const char * nbd_unlocked_get_version ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_kill_subprocess ( struct nbd_handle *h, int signum ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_supports_tls ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_supports_vsock ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern int nbd_unlocked_supports_uri ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); extern char * nbd_unlocked_get_uri ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); #endif /* LIBNBD_UNLOCKED_H */ libnbd-1.20.3/lib/uri.c0000644000175000017500000004302314636623470010236 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_LINUX_VM_SOCKETS_H #include #elif HAVE_SYS_VSOCK_H #include #endif #include "internal.h" #include "vector.h" #ifdef HAVE_LIBXML2 #include /* Connect to an NBD URI. */ int nbd_unlocked_connect_uri (struct nbd_handle *h, const char *uri) { if (nbd_unlocked_aio_connect_uri (h, uri) == -1) return -1; return nbd_internal_wait_until_connected (h); } struct uri_query { char *name; char *value; }; DEFINE_VECTOR_TYPE (uri_query_list, struct uri_query); /* Parse the query_raw substring of a URI into a list of decoded queries. * Return 0 on success or -1 on error. */ static int parse_uri_queries (const char *query_raw, uri_query_list *list) { /* Borrows from libvirt's viruri.c:virURIParseParams() */ const char *end, *eq; const char *query = query_raw; size_t i; if (!query || !*query) return 0; while (*query) { struct uri_query q = {0}; /* Find the next separator, or end of the string. */ end = strchr (query, '&'); if (!end) end = strchr (query, ';'); if (!end) end = query + strlen (query); /* Find the first '=' character between here and end. */ eq = strchr (query, '='); if (eq && eq >= end) eq = NULL; if (end == query) { /* Empty section (eg. "&&"). */ goto next; } else if (!eq) { /* If there is no '=' character, then we have just "name" * and consistent with CGI.pm we assume value is "". */ q.name = xmlURIUnescapeString (query, end - query, NULL); if (!q.name) goto error; } else if (eq+1 == end) { /* Or if we have "name=" here (works around annoying * problem when calling xmlURIUnescapeString with len = 0). */ q.name = xmlURIUnescapeString (query, eq - query, NULL); if (!q.name) goto error; } else if (query == eq) { /* If the '=' character is at the beginning then we have * "=value" and consistent with CGI.pm we _ignore_ this. */ goto next; } else { /* Otherwise it's "name=value". */ q.name = xmlURIUnescapeString (query, eq - query, NULL); if (!q.name) goto error; q.value = xmlURIUnescapeString (eq+1, end - (eq+1), NULL); if (!q.value) { free (q.name); goto error; } } if (!q.value) { q.value = strdup (""); if (!q.value) { free (q.name); goto error; } } /* Append to the list of queries. */ if (uri_query_list_append (list, q) == -1) { free (q.name); free (q.value); goto error; } next: query = end; if (*query) query++; /* skip '&' separator */ } return 0; error: for (i = 0; i < list->len; ++i) { free (list->ptr[i].name); free (list->ptr[i].value); } uri_query_list_reset (list); return -1; } /* Similar to nbdkit_parse_bool */ int parse_bool (const char *param, const char *value) { if (!strcmp (value, "1") || !strcasecmp (value, "true") || !strcasecmp (value, "t") || !strcasecmp (value, "yes") || !strcasecmp (value, "y") || !strcasecmp (value, "on")) return 1; if (!strcmp (value, "0") || !strcasecmp (value, "false") || !strcasecmp (value, "f") || !strcasecmp (value, "no") || !strcasecmp (value, "n") || !strcasecmp (value, "off")) return 0; set_error (EINVAL, "could not parse %s parameter, expecting %s=true|false", param, param); return -1; } int nbd_unlocked_aio_connect_uri (struct nbd_handle *h, const char *raw_uri) { xmlURIPtr uri = NULL; enum { tcp, unix_sock, vsock } transport; bool tls, socket_required; uri_query_list queries = empty_vector; int i, r; int ret = -1; const char *unixsocket = NULL; uri = xmlParseURI (raw_uri); if (!uri) { set_error (EINVAL, "unable to parse URI: %s", raw_uri); goto cleanup; } if (parse_uri_queries (uri->query_raw, &queries) == -1) { set_error (EINVAL, "unable to parse URI queries: %s", uri->query_raw); goto cleanup; } /* Scheme. */ if (uri->scheme) { if (strcasecmp (uri->scheme, "nbd") == 0) { transport = tcp; tls = false; socket_required = false; } else if (strcasecmp (uri->scheme, "nbds") == 0) { transport = tcp; tls = true; socket_required = false; } else if (strcasecmp (uri->scheme, "nbd+unix") == 0) { transport = unix_sock; tls = false; socket_required = true; } else if (strcasecmp (uri->scheme, "nbds+unix") == 0) { transport = unix_sock; tls = true; socket_required = true; } else if (strcasecmp (uri->scheme, "nbd+vsock") == 0) { transport = vsock; tls = false; socket_required = false; } else if (strcasecmp (uri->scheme, "nbds+vsock") == 0) { transport = vsock; tls = true; socket_required = false; } else { set_error (EINVAL, "unknown NBD URI scheme: %s", uri->scheme); goto cleanup; } } else { const char *explanation = NULL; if (raw_uri[0] == '/' && (h->uri_allow_transports & LIBNBD_ALLOW_TRANSPORT_UNIX) != 0) explanation = "to open a local socket use \"nbd+unix://?socket=PATH\""; else if (strncasecmp (raw_uri, "localhost", 9) == 0 && (h->uri_allow_transports & LIBNBD_ALLOW_TRANSPORT_TCP) != 0) explanation = "to open a local port use \"nbd://localhost\" or " "\"nbd://localhost:PORT\""; set_error (EINVAL, "NBD URI does not have a scheme: valid NBD URIs should " "start with a scheme like nbd://, nbds:// or nbd+unix://" "%s%s", explanation ? ": " : "", explanation ? explanation : ""); goto cleanup; } /* Insist on the scheme://[authority][/absname][?queries] form. */ if (strncmp (raw_uri + strlen (uri->scheme), "://", 3)) { set_error (EINVAL, "URI must begin with '%s://'", uri->scheme); goto cleanup; } /* Check the transport is allowed. */ if ((transport == tcp && (h->uri_allow_transports & LIBNBD_ALLOW_TRANSPORT_TCP) == 0) || (transport == unix_sock && (h->uri_allow_transports & LIBNBD_ALLOW_TRANSPORT_UNIX) == 0) || (transport == vsock && (h->uri_allow_transports & LIBNBD_ALLOW_TRANSPORT_VSOCK) == 0)) { set_error (EPERM, "URI transport %s is not permitted", uri->scheme); goto cleanup; } /* Check TLS is allowed. */ if ((tls && h->uri_allow_tls == LIBNBD_TLS_DISABLE) || (!tls && h->uri_allow_tls == LIBNBD_TLS_REQUIRE)) { set_error (EPERM, "URI TLS setting %s is not permitted", uri->scheme); goto cleanup; } /* Parse the socket parameter. */ for (i = 0; i < queries.len; i++) { if (strcasecmp (queries.ptr[i].name, "socket") == 0) unixsocket = queries.ptr[i].value; } if (socket_required && !unixsocket) { set_error (EINVAL, "cannot parse socket parameter from NBD URI " "(did you mean to use \"%s:///?socket=...\"?)", uri->scheme); goto cleanup; } else if (!socket_required && unixsocket) { set_error (EINVAL, "socket parameter is incompatible with \"%s:\" " "(did you mean to use \"%s+unix:///?socket=...\"?)", uri->scheme, !tls ? "nbd" : "nbds"); goto cleanup; } /* TLS */ if (tls && nbd_unlocked_set_tls (h, LIBNBD_TLS_REQUIRE) == -1) goto cleanup; /* Look for some tls-* parameters. */ for (i = 0; i < queries.len; i++) { if (strcasecmp (queries.ptr[i].name, "tls-certificates") == 0) { if (! h->uri_allow_local_file) { set_error (EPERM, "local file access (tls-certificates) is not allowed, " "call nbd_set_uri_allow_local_file to enable this"); goto cleanup; } if (nbd_unlocked_set_tls_certificates (h, queries.ptr[i].value) == -1) goto cleanup; } else if (strcasecmp (queries.ptr[i].name, "tls-psk-file") == 0) { if (! h->uri_allow_local_file) { set_error (EPERM, "local file access (tls-psk-file) is not allowed, " "call nbd_set_uri_allow_local_file to enable this"); goto cleanup; } if (nbd_unlocked_set_tls_psk_file (h, queries.ptr[i].value) == -1) goto cleanup; } else if (strcasecmp (queries.ptr[i].name, "tls-verify-peer") == 0) { int v = parse_bool ("tls-verify-peer", queries.ptr[i].value); if (v == -1) goto cleanup; if (nbd_unlocked_set_tls_verify_peer (h, v) == -1) goto cleanup; } } /* Username. */ if (uri->user && nbd_unlocked_set_tls_username (h, uri->user) == -1) goto cleanup; /* Export name. */ if (uri->path) { /* Since we require scheme://authority above, any path is absolute */ assert (uri->path[0] == '/'); r = nbd_unlocked_set_export_name (h, &uri->path[1]); } else r = nbd_unlocked_set_export_name (h, ""); if (r == -1) goto cleanup; switch (transport) { case tcp: { /* TCP */ char port_str[32]; char *server; size_t server_len; snprintf (port_str, sizeof port_str, "%d", uri->port > 0 ? uri->port : 10809); /* If the uri->server field is NULL, substitute "localhost". This * would be unusual and probably doesn't happen in reality. XXX */ server = uri->server ? : "localhost"; server_len = strlen (server); /* For a literal IPv6 address, the uri->server field will contain * "[addr]" and we must remove the brackets before passing it to * getaddrinfo in the state machine. */ if (server_len >= 2 && server[0] == '[' && server[server_len-1] == ']') { server_len -= 2; server++; server[server_len] = '\0'; } if (nbd_unlocked_aio_connect_tcp (h, server, port_str) == -1) goto cleanup; break; } case unix_sock: /* Unix domain socket */ if (nbd_unlocked_aio_connect_unix (h, unixsocket) == -1) goto cleanup; break; case vsock: { /* AF_VSOCK */ uint32_t cid, svm_port; /* Server, if present, must be the numeric CID. Else we * assume the host (2). */ if (uri->server && strcmp (uri->server, "") != 0) { /* This doesn't deal with overflow, but that seems unlikely to * matter because you'll end up with a CID one way or another. */ if (sscanf (uri->server, "%" SCNu32, &cid) != 1) { set_error (EINVAL, "cannot parse vsock CID from NBD URI: %s", uri->server); goto cleanup; } } else cid = 2; /* For unknown reasons libxml2 sets uri->port = -1 if the * authority field is not present at all. So we must check that * uri->port > 0. This prevents us from using certain very large * port numbers, but that's not an issue that matters in practice. */ svm_port = uri->port > 0 ? (uint32_t)uri->port : 10809; if (nbd_unlocked_aio_connect_vsock (h, cid, svm_port) == -1) goto cleanup; break; } } ret = 0; cleanup: for (i = 0; i < queries.len; ++i) { free (queries.ptr[i].name); free (queries.ptr[i].value); } free (queries.ptr); xmlFreeURI (uri); return ret; } /* This is best effort. If we didn't save enough information when * connecting then return NULL but try to set errno and the error * string to something useful. */ static int append_query_params (char **query_params, const char *key, const char *value) LIBNBD_ATTRIBUTE_NONNULL (1, 2, 3); char * nbd_unlocked_get_uri (struct nbd_handle *h) { xmlURI uri = { 0 }; bool using_tls; char *server = NULL; char *query_params = NULL; char *path = NULL; char *ret = NULL; if (h->tls == 2) /* TLS == require */ using_tls = true; else if (h->tls_negotiated) using_tls = true; else using_tls = false; /* First set uri.scheme and uri.server. */ /* We have a defined hostname and/or port number (nbd_connect_tcp). */ if (h->hostname && h->port) { int r; uri.scheme = using_tls ? "nbds" : "nbd"; /* We must try to guess here if the hostname is really an IPv6 * numeric address. Regular hostnames or IPv4 addresses wouldn't * contain ':'. */ if (strchr (h->hostname, ':') == NULL) r = asprintf (&server, "%s:%s", h->hostname, h->port); else r = asprintf (&server, "[%s]:%s", h->hostname, h->port); if (r == -1) { set_error (errno, "asprintf"); goto out; } uri.server = server; } /* We have a sockaddr (nbd_connect, nbd_connect_unix, nbd_connect_vsock). */ else if (h->connaddrlen > 0) { switch (h->connaddr.ss_family) { case AF_INET: case AF_INET6: { int r, err; char host[NI_MAXHOST]; char serv[NI_MAXSERV]; uri.scheme = using_tls ? "nbds" : "nbd"; err = getnameinfo ((struct sockaddr *)&h->connaddr, h->connaddrlen, host, sizeof host, serv, sizeof serv, NI_NUMERICHOST | NI_NUMERICSERV); if (err != 0) { set_error (0, "getnameinfo: %s", gai_strerror (err)); goto out; } if (h->connaddr.ss_family == AF_INET) r = asprintf (&server, "%s:%s", host, serv); else /* AF_INET6 */ r = asprintf (&server, "[%s]:%s", host, serv); if (r == -1) { set_error (errno, "asprintf"); goto out; } uri.server = server; break; } case AF_UNIX: { struct sockaddr_un *sun = (struct sockaddr_un *)&h->connaddr; if (sun->sun_path[0] == '\0') { /* Unix domain sockets in the abstract namespace are in theory * supported in NBD URIs, but libxml2 cannot handle them so * libnbd cannot use them here or in nbd_connect_uri. */ set_error (EPROTONOSUPPORT, "Unix domain sockets in the " "abstract namespace are not yet supported"); goto out; } uri.scheme = using_tls ? "nbds+unix" : "nbd+unix"; if (append_query_params (&query_params, "socket", sun->sun_path) == -1) goto out; /* You have to set this otherwise xmlSaveUri generates bogus * URIs "nbd+unix:/?socket=..." */ uri.server = ""; break; } #if HAVE_STRUCT_SOCKADDR_VM case AF_VSOCK: { struct sockaddr_vm *svm = (struct sockaddr_vm *)&h->connaddr; uri.scheme = using_tls ? "nbds+vsock" : "nbd+vsock"; if (asprintf (&server, "%u:%u", svm->svm_cid, svm->svm_port) == -1) { set_error (errno, "asprintf"); goto out; } uri.server = server; break; } #endif default: set_error (EAFNOSUPPORT, "address family %d not supported", h->connaddr.ss_family); goto out; } } /* Not enough information (nbd_connect_socket). */ else { set_error (EINVAL, "cannot construct a URI for this connection type"); goto out; } /* Set other uri.* fields. */ if (h->tls_username) uri.user = h->tls_username; if (h->export_name) { if (asprintf (&path, "/%s", h->export_name) == -1) { set_error (errno, "asprintf"); goto out; } uri.path = path; } if (h->tls_certificates) { if (append_query_params (&query_params, "tls-certificates", h->tls_certificates) == -1) goto out; } if (h->tls_psk_file) { if (append_query_params (&query_params, "tls-psk-file", h->tls_psk_file) == -1) goto out; } uri.query_raw = query_params; /* Construct the final URI and return it. */ ret = (char *)xmlSaveUri (&uri); if (ret == NULL) set_error (errno, "xmlSaveUri failed"); out: free (server); free (query_params); free (path); return ret; } static int append_query_params (char **query_params, const char *key, const char *value) { char *old_query_params = *query_params; if (asprintf (query_params, "%s%s%s=%s", old_query_params ? : "", old_query_params ? "&" : "", key, value) == -1) { set_error (errno, "asprintf"); return -1; } free (old_query_params); return 0; } #else /* !HAVE_LIBXML2 */ #define NOT_SUPPORTED_ERROR \ "libnbd was compiled without libxml2 support, so we do not support NBD URI" int nbd_unlocked_connect_uri (struct nbd_handle *h, const char *uri) { set_error (ENOTSUP, NOT_SUPPORTED_ERROR); return -1; } int nbd_unlocked_aio_connect_uri (struct nbd_handle *h, const char *raw_uri) { set_error (ENOTSUP, NOT_SUPPORTED_ERROR); return -1; } char * nbd_unlocked_get_uri (struct nbd_handle *h) { set_error (ENOTSUP, NOT_SUPPORTED_ERROR); return NULL; } #endif /* !HAVE_LIBXML2 */ libnbd-1.20.3/lib/utils.c0000644000175000017500000005512314616437241010600 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include "array-size.h" #include "checked-overflow.h" #include "minmax.h" #include "internal.h" void nbd_internal_hexdump (const void *data, size_t len, FILE *fp) { size_t i, j; for (i = 0; i < len; i += 16) { fprintf (fp, "%04zx: ", i); for (j = i; j < MIN (i+16, len); ++j) fprintf (fp, "%02x ", ((const unsigned char *)data)[j]); for (; j < i+16; ++j) fprintf (fp, " "); fprintf (fp, "|"); for (j = i; j < MIN (i+16, len); ++j) if (isprint (((const char *)data)[j])) fprintf (fp, "%c", ((const char *)data)[j]); else fprintf (fp, "."); for (; j < i+16; ++j) fprintf (fp, " "); fprintf (fp, "|\n"); } } /* Replace a string_vector with a deep copy of in (including final NULL). */ int nbd_internal_copy_string_list (string_vector *v, char **in) { size_t i; assert (in); assert (v->ptr == NULL); for (i = 0; in[i] != NULL; ++i) { char *copy = strdup (in[i]); if (copy == NULL) return -1; if (string_vector_append (v, copy) == -1) { free (copy); return -1; } } return string_vector_append (v, NULL); } /* Store argv into h, or diagnose an error on failure. */ int nbd_internal_set_argv (struct nbd_handle *h, char **argv) { /* This should never be NULL. The generator adds code to each * StringList call in lib/api.c to check this and return an error. */ assert (argv); /* Because this function is only called from functions that take * argv-style lists of strings (such as nbd_connect_command) we can * check here that the command name is present. */ if (argv[0] == NULL) { set_error (EINVAL, "missing command name in argv list"); return -1; } string_vector_empty (&h->argv); if (nbd_internal_copy_string_list (&h->argv, argv) == -1) { set_error (errno, "realloc"); return -1; } return 0; } /* Copy queries (defaulting to h->request_meta_contexts) into h->querylist. * Set an error on failure. */ int nbd_internal_set_querylist (struct nbd_handle *h, char **queries) { string_vector_empty (&h->querylist); if (queries) { if (nbd_internal_copy_string_list (&h->querylist, queries) == -1) { set_error (errno, "realloc"); return -1; } /* Drop trailing NULL */ assert (h->querylist.len > 0); string_vector_remove (&h->querylist, h->querylist.len - 1); } else { size_t i; for (i = 0; i < h->request_meta_contexts.len; ++i) { char *copy = strdup (h->request_meta_contexts.ptr[i]); if (copy == NULL) { set_error (errno, "strdup"); return -1; } if (string_vector_append (&h->querylist, copy) == -1) { set_error (errno, "realloc"); free (copy); return -1; } } } return 0; } /* Like sprintf ("%ld", v), but safe to use between fork and exec. Do * not use this function in any other context. * * The caller must supply a scratch buffer which is at least 32 bytes * long (else the function will call abort()). Note that the returned * string does not point to the start of this buffer. */ const char * nbd_internal_fork_safe_itoa (long v, char *buf, size_t bufsize) { unsigned long uv = v; size_t i = bufsize - 1; bool neg = false; if (bufsize < 32) abort (); buf[i--] = '\0'; if (v < 0) { neg = true; uv = -uv; } if (uv == 0) buf[i--] = '0'; else { while (uv) { buf[i--] = '0' + (uv % 10); uv /= 10; } } if (neg) buf[i--] = '-'; i++; return &buf[i]; } #if defined (__GNUC__) #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wunused-result" #endif /* "Best effort" function for writing out a list of NUL-terminated strings to a * file descriptor (without the NUL-terminators). The list is terminated with * (char *)NULL. Partial writes, and EINTR and EAGAIN failures are handled * internally. No value is returned; only call this function for writing * diagnostic data on error paths, when giving up on a higher-level action * anyway. * * No more than 16 strings, excluding the NULL terminator, will be written. (As * of POSIX Issue 7 + TC2, _XOPEN_IOV_MAX is 16.) * * The function is supposed to remain async-signal-safe. * * (The va_*() macros, while not marked async-signal-safe in Issue 7 + TC2, are * considered such, per , which * is binding for Issue 7 implementations via the Interpretations Track. * * Furthermore, writev(), while also not marked async-signal-safe in Issue 7 + * TC2, is considered such, per * , which is slated for * inclusion in Issue 7 TC3 (if there's going to be a TC3), and in Issue 8.) */ static void __attribute__ ((sentinel)) xwritel (int fildes, ...) { /* Open-code the current value of _XOPEN_IOV_MAX, in order to contain stack * footprint, should _XOPEN_IOV_MAX grow in the future. */ struct iovec iovec[16], *filled, *end, *pos; va_list ap; char *arg; /* Translate the variable argument list to IO vectors. Note that we cast away * const-ness intentionally. */ filled = iovec; end = iovec + ARRAY_SIZE (iovec); va_start (ap, fildes); while (filled < end && (arg = va_arg (ap, char *)) != NULL) *filled++ = (struct iovec){ .iov_base = arg, .iov_len = strlen (arg) }; va_end (ap); /* Write out the IO vectors. */ pos = iovec; while (pos < filled) { ssize_t written; /* Skip any empty vectors at the front. */ if (pos->iov_len == 0) { ++pos; continue; } /* Write out the vectors. */ do written = writev (fildes, pos, filled - pos); while (written == -1 && (errno == EINTR || errno == EAGAIN)); if (written == -1) return; /* Consume the vectors that have been written out (fully, or in part). Note * that "written" is positive here. */ do { size_t advance; advance = MIN (written, pos->iov_len); /* Note that "advance" is positive here iff "pos->iov_len" is positive. */ pos->iov_base = (char *)pos->iov_base + advance; pos->iov_len -= advance; written -= advance; /* At least one of "written" and "pos->iov_len" is zero here. */ if (pos->iov_len == 0) ++pos; } while (written > 0); } } /* Fork-safe version of perror. ONLY use this after fork and before * exec, the rest of the time use set_error(). */ void nbd_internal_fork_safe_perror (const char *s) { const int err = errno; const char *m = NULL; char buf[32]; #ifdef HAVE_STRERRORDESC_NP m = strerrordesc_np (errno); #else #if HAVE_SYS_ERRLIST /* NB Don't use #ifdef */ m = errno >= 0 && errno < sys_nerr ? sys_errlist[errno] : NULL; #endif #endif if (!m) m = nbd_internal_fork_safe_itoa (errno, buf, sizeof buf); xwritel (STDERR_FILENO, s, ": ", m, "\n", (char *)NULL); /* Restore original errno in case it was disturbed by the system * calls above. */ errno = err; } #if defined (__GNUC__) #pragma GCC diagnostic pop #endif /* nbd_internal_printable_* functions are used by the API code to * print debug messages when we trace calls in and out of libnbd. The * calls should attempt to convert the parameter into something * printable. * * They cannot fail, but it's OK if they return NULL. * * Caller frees the result. */ char * nbd_internal_printable_buffer (const void *buf, size_t count) { char *s = NULL; size_t len = 0, truncated; FILE *fp; fp = open_memstream (&s, &len); if (fp == NULL) return NULL; /* If the buffer is very long, truncate it to 1 sector. */ if (count > 512) { truncated = count - 512; count = 512; } else truncated = 0; fprintf (fp, "\n"); nbd_internal_hexdump (buf, count, fp); if (truncated) fprintf (fp, "[... %zu more bytes truncated ...]\n", truncated); fclose (fp); return s; } static void printable_string (const char *str, FILE *fp) { size_t i, n, truncated; if (str == NULL) { fprintf (fp, "NULL"); return; } n = strlen (str); if (n > 512) { truncated = n - 512; n = 512; } else truncated = 0; fprintf (fp, "\""); for (i = 0; i < n; ++i) { if (isprint (str[i])) fputc (str[i], fp); else fprintf (fp, "\\x%02x", str[i]); } if (truncated) fprintf (fp, "[... %zu more bytes truncated ...]", truncated); fprintf (fp, "\""); } char * nbd_internal_printable_string (const char *str) { char *s = NULL; size_t len = 0; FILE *fp; fp = open_memstream (&s, &len); if (fp == NULL) return NULL; printable_string (str, fp); fclose (fp); return s; } char * nbd_internal_printable_string_list (char **list) { char *s = NULL; size_t len = 0; FILE *fp; fp = open_memstream (&s, &len); if (fp == NULL) return NULL; if (list == NULL) fprintf (fp, "NULL"); else { size_t i; fprintf (fp, "["); for (i = 0; list[i] != NULL; ++i) { if (i > 0) fprintf (fp, ", "); printable_string (list[i], fp); } fprintf (fp, "]"); } fclose (fp); return s; } int nbd_internal_socket (int domain, int type, int protocol, bool nonblock) { int fd; /* So far we do not know about any platform that has SOCK_CLOEXEC and * lacks SOCK_NONBLOCK at the same time. * * The workaround for missing SOCK_CLOEXEC introduces a race which * cannot be fixed until support for SOCK_CLOEXEC is added (or other * fix is implemented). */ #ifndef SOCK_CLOEXEC int flags; #else type |= SOCK_CLOEXEC; if (nonblock) type |= SOCK_NONBLOCK; #endif fd = socket (domain, type, protocol); #ifndef SOCK_CLOEXEC if (fd == -1) return -1; if (fcntl (fd, F_SETFD, FD_CLOEXEC) == -1) { close (fd); return -1; } if (nonblock) { flags = fcntl (fd, F_GETFL, 0); if (flags == -1 || fcntl (fd, F_SETFL, flags|O_NONBLOCK) == -1) { close (fd); return -1; } } #endif return fd; } int nbd_internal_socketpair (int domain, int type, int protocol, int *fds) { int ret; /* * Same as with nbd_internal_socket() this workaround for missing * SOCK_CLOEXEC introduces a race which cannot be fixed until support * for SOCK_CLOEXEC is added (or other fix is implemented). */ #ifndef SOCK_CLOEXEC size_t i; #else type |= SOCK_CLOEXEC; #endif ret = socketpair (domain, type, protocol, fds); #ifndef SOCK_CLOEXEC if (ret == 0) { for (i = 0; i < 2; i++) { if (fcntl (fds[i], F_SETFD, FD_CLOEXEC) == -1) { close (fds[0]); close (fds[1]); return -1; } } } #endif return ret; } void nbd_internal_fork_safe_assert (int result, const char *file, long line, const char *func, const char *assertion) { const char *line_out; char line_buf[32]; if (result) return; line_out = nbd_internal_fork_safe_itoa (line, line_buf, sizeof line_buf); xwritel (STDERR_FILENO, file, ":", line_out, ": ", func, ": Assertion `", assertion, "' failed.\n", (char *)NULL); abort (); } /* Returns the value of the PATH environment variable -- falling back to * confstr(_CS_PATH) if PATH is absent -- as a dynamically allocated string. On * failure, sets "errno" and returns NULL. */ static char * LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (free) get_path (void) { char *path; bool env_path_found; size_t path_size, path_size2; /* Note: per POSIX, here we should lock the environment, even just for * getenv(). However, glibc and any other high-quality libc will not be * modifying "environ" during getenv(), and no sane application should modify * the environment after launching threads. */ path = getenv ("PATH"); if ((env_path_found = (path != NULL))) path = strdup (path); /* This is where we'd unlock the environment. */ if (env_path_found) { /* This handles out-of-memory as well. */ return path; } errno = 0; path_size = confstr (_CS_PATH, NULL, 0); if (path_size == 0) { /* If _CS_PATH does not have a configuration-defined value, just store * ENOENT to "errno". */ if (errno == 0) errno = ENOENT; return NULL; } path = malloc (path_size); if (path == NULL) return NULL; path_size2 = confstr (_CS_PATH, path, path_size); assert (path_size2 == path_size); return path; } /* nbd_internal_execvpe_init() and nbd_internal_fork_safe_execvpe() together * present an execvp() alternative that is async-signal-safe. * * nbd_internal_execvpe_init() may only be called before fork(), for filling in * the caller-allocated, uninitialized "ctx" structure. If * nbd_internal_execvpe_init() succeeds, then fork() may be called. * Subsequently, in the child process, nbd_internal_fork_safe_execvpe() may be * called with the inherited "ctx" structure, while in the parent process, * nbd_internal_execvpe_uninit() must be called to uninitialize (evacuate) the * "ctx" structure. * * On failure, "ctx" will not have been modified, "errno" is set, and -1 is * returned. Failures include: * * - Errors forwarded from underlying functions such as strdup(), confstr(), * malloc(), string_vector_append(). * * - ENOENT: "file" is an empty string. * * - ENOENT: "file" does not contain a "/" character, the PATH * environment variable is not set, and confstr() doesn't associate a * configuration-defined value with _CS_PATH. * * - ENOENT: "file" does not contain a "/" character, and: (a) the PATH * environment variable is set to the empty string, or (b) PATH is not * set, and confstr() outputs the empty string for _CS_PATH. * * - EOVERFLOW: the sizes or counts of necessary objects could not be expressed. * * - EINVAL: "num_args" is less than 2. * * On success, the "ctx" structure will have been filled in, and 0 is returned. * * - "pathnames" member: * * - All strings pointed-to by elements of the "pathnames" string_vector * member are owned by "pathnames". * * - If "file" contains a "/" character, then the sole entry in * "pathnames" is a copy of "file". * * - If "file" does not contain a "/" character: * * Let "system path" be defined as the value of the PATH environment * variable, if the latter exists, and as the value output by confstr() for * _CS_PATH otherwise. Per the ENOENT specifications above, "system path" is * a non-empty string. Let "system path" further be of the form * * [n = 1] * * or * * ::...: [n >= 2] * * where for each 0 <= i < n, does not contain the ":" * character. In the (n = 1) case, is never empty (see ENOENT * above), while in the (n >= 2) case, any individual may or may * not be empty. * * The "pathnames" string_vector member has n elements; for each 0 <= i < n, * element i is of the form * * suffix(curdir())file * * where * * curdir(x) := "." if x = "" * curdir(x) := x otherwise * * and * * suffix(x) := x if "x" ends with a "/" * suffix(x) := x "/" otherwise * * This transformation implements the POSIX XBD / PATH environment variable * semantics, creating candidate pathnames for execution by * nbd_internal_fork_safe_execvpe(). nbd_internal_fork_safe_execvpe() will * iterate over the candidate pathnames with execve() until execve() * succeeds, or fails with an error that is due to neither pathname * resolution, nor the candidate not being a regular file, nor the candidate * lacking execution permission. * * - The "sh_argv" array member will have at least (num_args + 1) elements * allocated, and none populated. * * (The minimum value of "num_args" is 2 -- see EINVAL above. According to * POSIX, "[t]he argument /arg0/ should point to a filename string that is * associated with the process being started by one of the /exec/ functions", * plus "num_args" includes the null pointer that terminates the argument * list.) * * This allocation is made in anticipation of execve() failing for a * particular candidate inside nbd_internal_fork_safe_execvpe() with ENOEXEC * ("[t]he new process image file has the appropriate access permission but * has an unrecognized format"). While that failure terminates the iteration, * the failed call * * execve (pathnames[i], * { argv[0], argv[1], ..., NULL }, // (num_args >= 2) elements * { envp[0], envp[1], ..., NULL }) * * must be repeated as * * execve (, * { argv[0], pathnames[i], // ((num_args + 1) >= 3) argv[1], ..., NULL }, // elements * { envp[0], envp[1], ..., NULL }) * * for emulating execvp(). The allocation in the "sh_argv" member makes it * possible just to *link* the original "argv" elements and the "pathnames[i]" * candidate into the right positions. * * (POSIX leaves the shell pathname unspecified; "/bin/sh" should be good * enough.) * * The shell *binary* will see itself being executed under the name "argv[0]", * will receive "pathnames[i]" as the pathname of the shell *script* to read * and interpret ("command_file" in POSIX terminology), will expose * "pathnames[i]" as the positional parameter $0 to the script, and will * forward "argv[1]" and the rest to the script as positional parameters $1 * and onward. */ int nbd_internal_execvpe_init (struct execvpe *ctx, const char *file, size_t num_args) { int rc; char *sys_path; string_vector pathnames; char *pathname; size_t num_sh_args; char **sh_argv; size_t sh_argv_bytes; rc = -1; if (file[0] == '\0') { errno = ENOENT; return rc; } /* First phase. */ sys_path = NULL; pathnames = (string_vector)empty_vector; if (strchr (file, '/') == NULL) { size_t file_len; const char *sys_path_element, *scan; bool finish; sys_path = get_path (); if (sys_path == NULL) return rc; if (sys_path[0] == '\0') { errno = ENOENT; goto free_sys_path; } pathname = NULL; file_len = strlen (file); sys_path_element = sys_path; scan = sys_path; do { assert (sys_path_element <= scan); finish = (*scan == '\0'); if (finish || *scan == ':') { const char *sys_path_copy_start; size_t sys_path_copy_size; size_t sep_copy_size; size_t pathname_size; char *p; if (scan == sys_path_element) { sys_path_copy_start = "."; sys_path_copy_size = 1; } else { sys_path_copy_start = sys_path_element; sys_path_copy_size = scan - sys_path_element; } assert (sys_path_copy_size >= 1); sep_copy_size = (sys_path_copy_start[sys_path_copy_size - 1] != '/'); if (ADD_OVERFLOW (sys_path_copy_size, sep_copy_size, &pathname_size) || ADD_OVERFLOW (pathname_size, file_len, &pathname_size) || ADD_OVERFLOW (pathname_size, 1u, &pathname_size)) { errno = EOVERFLOW; goto empty_pathnames; } pathname = malloc (pathname_size); if (pathname == NULL) goto empty_pathnames; p = pathname; memcpy (p, sys_path_copy_start, sys_path_copy_size); p += sys_path_copy_size; memcpy (p, "/", sep_copy_size); p += sep_copy_size; memcpy (p, file, file_len); p += file_len; *p++ = '\0'; if (string_vector_append (&pathnames, pathname) == -1) goto empty_pathnames; /* Ownership transferred. */ pathname = NULL; sys_path_element = scan + 1; } ++scan; } while (!finish); } else { pathname = strdup (file); if (pathname == NULL) return rc; if (string_vector_append (&pathnames, pathname) == -1) goto empty_pathnames; /* Ownership transferred. */ pathname = NULL; } /* Second phase. */ if (num_args < 2) { errno = EINVAL; goto empty_pathnames; } if (ADD_OVERFLOW (num_args, 1u, &num_sh_args) || MUL_OVERFLOW (num_sh_args, sizeof *sh_argv, &sh_argv_bytes)) { errno = EOVERFLOW; goto empty_pathnames; } sh_argv = malloc (sh_argv_bytes); if (sh_argv == NULL) goto empty_pathnames; /* Commit. */ ctx->pathnames = pathnames; ctx->sh_argv = sh_argv; ctx->num_sh_args = num_sh_args; rc = 0; /* Fall through, for freeing temporaries. */ empty_pathnames: if (rc == -1) { free (pathname); string_vector_empty (&pathnames); } free_sys_path: free (sys_path); return rc; } void nbd_internal_execvpe_uninit (struct execvpe *ctx) { free (ctx->sh_argv); ctx->num_sh_args = 0; string_vector_empty (&ctx->pathnames); } int nbd_internal_fork_safe_execvpe (struct execvpe *ctx, const string_vector *argv, char * const *envp) { size_t pathname_idx; NBD_INTERNAL_FORK_SAFE_ASSERT (ctx->pathnames.len > 0); pathname_idx = 0; do { (void)execve (ctx->pathnames.ptr[pathname_idx], argv->ptr, envp); if (errno != EACCES && errno != ELOOP && errno != ENAMETOOLONG && errno != ENOENT && errno != ENOTDIR) break; ++pathname_idx; } while (pathname_idx < ctx->pathnames.len); if (errno == ENOEXEC) { char **sh_argp; size_t argv_idx; NBD_INTERNAL_FORK_SAFE_ASSERT (ctx->num_sh_args >= argv->len); NBD_INTERNAL_FORK_SAFE_ASSERT (ctx->num_sh_args - argv->len == 1); sh_argp = ctx->sh_argv; *sh_argp++ = argv->ptr[0]; *sh_argp++ = ctx->pathnames.ptr[pathname_idx]; for (argv_idx = 1; argv_idx < argv->len; ++argv_idx) *sh_argp++ = argv->ptr[argv_idx]; (void)execve ("/bin/sh", ctx->sh_argv, envp); } return -1; } libnbd-1.20.3/lib/test-fork-safe-assert.c0000644000175000017500000000336014525371754013572 /* nbd client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #ifdef HAVE_PRCTL #include #endif #include #undef NDEBUG #include "internal.h" /* Define these to verify that NBD_INTERNAL_FORK_SAFE_ASSERT() properly * stringifies the expression passed to it. */ #define TRUE 1 #define FALSE 0 int main (void) { struct rlimit rlimit; /* The standard approach for disabling core dumping. Has no effect on Linux if * /proc/sys/kernel/core_pattern starts with a pipe (|) symbol. */ if (getrlimit (RLIMIT_CORE, &rlimit) == -1) { perror ("getrlimit"); return EXIT_FAILURE; } rlimit.rlim_cur = 0; if (setrlimit (RLIMIT_CORE, &rlimit) == -1) { perror ("setrlimit"); return EXIT_FAILURE; } #ifdef HAVE_PRCTL if (prctl (PR_SET_DUMPABLE, 0, 0, 0, 0) == -1) { perror ("prctl"); return EXIT_FAILURE; } #endif NBD_INTERNAL_FORK_SAFE_ASSERT (TRUE); NBD_INTERNAL_FORK_SAFE_ASSERT (FALSE); return 0; } libnbd-1.20.3/lib/test-fork-safe-execvpe.c0000644000175000017500000000610114525371754013724 /* nbd client library in userspace * Copyright (C) 2013-2023 Red Hat Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include "internal.h" extern char **environ; /* This is a perror() replacement that makes the error message more * machine-readable, for a select few error numbers. Do not use it as a general * error() replacement, only upon nbd_internal_execvpe_init() and * nbd_internal_fork_safe_execvpe() failure. */ static void xperror (const char *s) { const char *err; if (s != NULL && *s != '\0') (void)fprintf (stderr, "%s: ", s); switch (errno) { case EACCES: err = "EACCES"; break; case ELOOP: err = "ELOOP"; break; case ENOENT: err = "ENOENT"; break; case ENOTDIR: err = "ENOTDIR"; break; default: err = strerror (errno); } (void)fprintf (stderr, "%s\n", err); } int main (int argc, char **argv) { struct execvpe ctx; const char *prog_file; string_vector prog_argv; size_t i; if (argc < 3) { fprintf (stderr, "%1$s: usage: %1$s program-to-exec argv0 ...\n", argv[0]); return EXIT_FAILURE; } prog_file = argv[1]; /* For the argv of the program to execute, we need to drop our argv[0] (= our * own name) and argv[1] (= the program we need to execute), and to tack on a * terminating null pointer. Note that "argc" does not include the terminating * NULL. */ prog_argv = (string_vector)empty_vector; if (string_vector_reserve (&prog_argv, argc - 2 + 1) == -1) { perror ("string_vector_reserve"); return EXIT_FAILURE; } for (i = 2; i < argc; ++i) (void)string_vector_append (&prog_argv, argv[i]); (void)string_vector_append (&prog_argv, NULL); if (nbd_internal_execvpe_init (&ctx, prog_file, prog_argv.len) == -1) { xperror ("nbd_internal_execvpe_init"); goto reset_prog_argv; } /* Print out the generated candidates. */ for (i = 0; i < ctx.pathnames.len; ++i) (void)fprintf (stdout, "%s\n", ctx.pathnames.ptr[i]); if (fflush (stdout) == EOF) { perror ("fflush"); goto uninit_execvpe; } (void)nbd_internal_fork_safe_execvpe (&ctx, &prog_argv, environ); xperror ("nbd_internal_fork_safe_execvpe"); /* fall through */ uninit_execvpe: nbd_internal_execvpe_uninit (&ctx); reset_prog_argv: string_vector_reset (&prog_argv); return EXIT_FAILURE; } libnbd-1.20.3/lib/libnbd.syms0000444000175000017500000001262014603303744011430 # NBD client library in userspace # WARNING: THIS FILE IS GENERATED FROM # generator/generator # ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. # # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Public symbols in libnbd 1.0: LIBNBD_1.0 { global: nbd_create; nbd_close; nbd_get_errno; nbd_get_error; nbd_set_debug; nbd_get_debug; nbd_set_debug_callback; nbd_clear_debug_callback; nbd_set_handle_name; nbd_get_handle_name; nbd_set_export_name; nbd_get_export_name; nbd_set_tls; nbd_get_tls; nbd_set_tls_certificates; nbd_set_tls_verify_peer; nbd_get_tls_verify_peer; nbd_set_tls_username; nbd_get_tls_username; nbd_set_tls_psk_file; nbd_add_meta_context; nbd_connect_uri; nbd_connect_unix; nbd_connect_tcp; nbd_connect_command; nbd_is_read_only; nbd_can_flush; nbd_can_fua; nbd_is_rotational; nbd_can_trim; nbd_can_zero; nbd_can_df; nbd_can_multi_conn; nbd_can_cache; nbd_can_meta_context; nbd_get_size; nbd_pread; nbd_pread_structured; nbd_pwrite; nbd_shutdown; nbd_flush; nbd_trim; nbd_cache; nbd_zero; nbd_block_status; nbd_poll; nbd_aio_connect; nbd_aio_connect_uri; nbd_aio_connect_unix; nbd_aio_connect_tcp; nbd_aio_connect_command; nbd_aio_pread; nbd_aio_pread_structured; nbd_aio_pwrite; nbd_aio_disconnect; nbd_aio_flush; nbd_aio_trim; nbd_aio_cache; nbd_aio_zero; nbd_aio_block_status; nbd_aio_get_fd; nbd_aio_get_direction; nbd_aio_notify_read; nbd_aio_notify_write; nbd_aio_is_created; nbd_aio_is_connecting; nbd_aio_is_ready; nbd_aio_is_processing; nbd_aio_is_dead; nbd_aio_is_closed; nbd_aio_command_completed; nbd_aio_peek_command_completed; nbd_aio_in_flight; nbd_connection_state; nbd_get_package_name; nbd_get_version; nbd_kill_subprocess; nbd_supports_tls; nbd_supports_uri; # Everything else is hidden. local: *; }; # Public symbols in libnbd 1.2: LIBNBD_1.2 { global: nbd_get_tls_negotiated; nbd_set_request_structured_replies; nbd_get_request_structured_replies; nbd_get_structured_replies_negotiated; nbd_set_handshake_flags; nbd_get_handshake_flags; nbd_set_uri_allow_transports; nbd_set_uri_allow_tls; nbd_set_uri_allow_local_file; nbd_connect_vsock; nbd_connect_socket; nbd_connect_systemd_socket_activation; nbd_can_fast_zero; nbd_get_protocol; nbd_aio_connect_vsock; nbd_aio_connect_socket; nbd_aio_connect_systemd_socket_activation; } LIBNBD_1.0; # Public symbols in libnbd 1.4: LIBNBD_1.4 { global: nbd_set_full_info; nbd_get_full_info; nbd_get_canonical_export_name; nbd_get_export_description; nbd_set_opt_mode; nbd_get_opt_mode; nbd_opt_go; nbd_opt_abort; nbd_opt_list; nbd_opt_info; nbd_get_block_size; nbd_aio_opt_go; nbd_aio_opt_abort; nbd_aio_opt_list; nbd_aio_opt_info; nbd_aio_is_negotiating; } LIBNBD_1.2; # Public symbols in libnbd 1.6: LIBNBD_1.6 { global: nbd_set_strict_mode; nbd_get_strict_mode; nbd_opt_list_meta_context; nbd_get_nr_meta_contexts; nbd_get_meta_context; nbd_clear_meta_contexts; nbd_aio_opt_list_meta_context; } LIBNBD_1.4; # Public symbols in libnbd 1.8: LIBNBD_1.8 { global: nbd_set_private_data; nbd_get_private_data; nbd_get_uri; } LIBNBD_1.6; # Public symbols in libnbd 1.12: LIBNBD_1.12 { global: nbd_set_request_block_size; nbd_get_request_block_size; nbd_set_pread_initialize; nbd_get_pread_initialize; } LIBNBD_1.8; # Public symbols in libnbd 1.16: LIBNBD_1.16 { global: nbd_stats_bytes_sent; nbd_stats_chunks_sent; nbd_stats_bytes_received; nbd_stats_chunks_received; nbd_set_request_meta_context; nbd_get_request_meta_context; nbd_opt_starttls; nbd_opt_structured_reply; nbd_opt_list_meta_context_queries; nbd_opt_set_meta_context; nbd_opt_set_meta_context_queries; nbd_set_socket_activation_name; nbd_get_socket_activation_name; nbd_poll2; nbd_aio_opt_starttls; nbd_aio_opt_structured_reply; nbd_aio_opt_list_meta_context_queries; nbd_aio_opt_set_meta_context; nbd_aio_opt_set_meta_context_queries; nbd_supports_vsock; } LIBNBD_1.12; # Public symbols in libnbd 1.18: LIBNBD_1.18 { global: nbd_set_request_extended_headers; nbd_get_request_extended_headers; nbd_get_extended_headers_negotiated; nbd_opt_extended_headers; nbd_can_block_status_payload; nbd_block_status_64; nbd_block_status_filter; nbd_aio_opt_extended_headers; nbd_aio_block_status_64; nbd_aio_block_status_filter; } LIBNBD_1.16; libnbd-1.20.3/lib/test-fork-safe-assert.sh0000755000175000017500000000224214525371754013763 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA set +e ./test-fork-safe-assert 2>test-fork-safe-assert.err exit_status=$? set -e test $exit_status -gt 128 signal_name=$(kill -l $exit_status) test "x$signal_name" = xABRT || test "x$signal_name" = xSIGABRT ptrn="^test-fork-safe-assert\\.c:[0-9]+: main: Assertion \`FALSE' failed\\.\$" grep -E -q -- "$ptrn" test-fork-safe-assert.err grep -v -q "\`TRUE'" test-fork-safe-assert.err libnbd-1.20.3/lib/test-fork-safe-execvpe.sh0000755000175000017500000002455114553021743014117 #!/usr/bin/env bash # nbd client library in userspace # Copyright (C) 2013-2023 Red Hat Inc. # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e # The "realpath" utility is not in POSIX, but Linux, FreeBSD and # OpenBSD all have it. requires "$REALPATH" / # Determine the absolute pathname of the execvpe helper binary. bname=$(basename -- "$0" .sh) dname=$(dirname -- "$0") if ! execvpe=$($REALPATH -- "$dname/$bname"); then # Work around . For example, # Alpine Linux in the libnbd CI uses BusyBox. execvpe=$($REALPATH "$dname/$bname") fi # This is an elaborate way to control the PATH variable around the $execvpe # helper binary as narrowly as possible. # # If $1 is "_", then the $execvpe helper binary is invoked with PATH unset. # Otherwise, the binary is invoked with PATH set to $1. # # $2 and onward are passed to $execvpe; $2 becomes "program-to-exec" for the # helper and $3 becomes argv[0] for the program executed by the helper. # # (Outside of the "run" function below, "run0" should only ever be called for # working around BusyBox. (Alpine Linux in the libnbd CI uses BusyBox.) # BusyBox's utilities "expr", "sh" etc. are just symlinks to the central # "busybox" binary executable, and that executable keys its behavior off the # name under which it is invoked -- that is, $3 here. See # .) # # The command itself (including the PATH setting) is written to "cmd" (for error # reporting purposes only); the standard output and error are saved in "out" and # "err" respectively; the exit status is written to "status". This function # should never fail; if it does, then that's a bug in this unit test script, or # the disk is full etc. run0() { local pathctl=$1 local exit_status shift 1 if test _ = "$pathctl"; then printf 'unset PATH; %s %s\n' "$execvpe" "$*" >cmd set +e ( unset PATH "$execvpe" "$@" >out 2>err ) exit_status=$? set -e else printf 'PATH=%s %s %s\n' "$pathctl" "$execvpe" "$*" >cmd set +e PATH=$pathctl "$execvpe" "$@" >out 2>err exit_status=$? set -e fi printf '%d\n' $exit_status >status } # Does the same as "run0", but $2 becomes *both* "program-to-exec" for the the # $execvpe helper binary *and* argv[0] for the program executed by the helper. run() { local pathctl=$1 local program=$2 shift 1 run0 "$pathctl" "$program" "$@" } # After "run" returns, the following three functions can verify the result. # # Check if the helper binary failed in nbd_internal_execvpe_init(). # # $1 is the error number (a macro name such as ENOENT) that's expected of # nbd_internal_execvpe_init(). init_fail() { local expected_error="nbd_internal_execvpe_init: $1" local cmd=$(< cmd) local err=$(< err) local status=$(< status) if test 0 -eq "$status"; then printf "'%s' should have failed\\n" "$cmd" >&2 return 1 fi if test x"$err" != x"$expected_error"; then printf "'%s' should have failed with '%s', got '%s'\\n" \ "$cmd" "$expected_error" "$err" >&2 return 1 fi } # Check if the helper binary failed in nbd_internal_fork_safe_execvpe(). # # $1 is the output (the list of candidate pathnames) that # nbd_internal_execvpe_init() is expected to produce; with inner # characters replaced with characters, and the last stripped. # # $2 is the error number (a macro name such as ENOENT) that's expected of # nbd_internal_fork_safe_execvpe(). execve_fail() { local expected_output=$1 local expected_error="nbd_internal_fork_safe_execvpe: $2" local cmd=$(< cmd) local out=$(< out) local err=$(< err) local status=$(< status) if test 0 -eq "$status"; then printf "'%s' should have failed\\n" "$cmd" >&2 return 1 fi if test x"$err" != x"$expected_error"; then printf "'%s' should have failed with '%s', got '%s'\\n" \ "$cmd" "$expected_error" "$err" >&2 return 1 fi out=${out//$'\n'/,} if test x"$out" != x"$expected_output"; then printf "'%s' should have output '%s', got '%s'\\n" \ "$cmd" "$expected_output" "$out" >&2 return 1 fi } # Check if the helper binary and the program executed by it succeeded. # # $1 is the output (the list of candidate pathnames) that # nbd_internal_execvpe_init() is expected to produce, followed by any output # expected of the program that's executed by the helper; with inner # characters replaced with characters, and the last stripped. success() { local expected_output=$1 local cmd=$(< cmd) local out=$(< out) local status=$(< status) if test 0 -ne "$status"; then printf "'%s' should have succeeded\\n" "$cmd" >&2 return 1 fi out=${out//$'\n'/,} if test x"$out" != x"$expected_output"; then printf "'%s' should have output '%s', got '%s'\\n" \ "$cmd" "$expected_output" "$out" >&2 return 1 fi } # Create a temporary directory and change the working directory to it. tmpd=$(mktemp -d) cleanup_fn rm -r -- "$tmpd" cd "$tmpd" # If the "file" parameter of execvpe() is an empty string, then we must fail -- # in nbd_internal_execvpe_init() -- regardless of PATH. run _ ""; init_fail ENOENT run "" ""; init_fail ENOENT run . ""; init_fail ENOENT # Create subdirectories for triggering non-fatal internal error conditions of # execvpe(). (Almost) every subdirectory will contain one entry, called "f". # # Create a directory that's empty. mkdir empty # Create a directory with a named pipe (FIFO) in it. mkdir fifo mkfifo fifo/f # Create a directory with a directory in it. mkdir subdir mkdir subdir/f # Create a directory with a non-executable file in it. mkdir nxregf touch nxregf/f # Create a symlink loop. ln -s symlink symlink # Create a directory with a (most likely) binary executable in it. mkdir bin expr_pathname=$(command -p -v expr) cp -- "$expr_pathname" bin/f # Create a directory with an executable shell script that does not contain a # shebang (#!). The script will print $0 and $1, and not depend on PATH for it. mkdir sh printf "command -p printf '%%s %%s\\\\n' \"\$0\" \"\$1\"\\n" >sh/f chmod u+x sh/f # In the tests below, invoke each "f" such that the "file" parameter of # execvpe() contain a character. # # Therefore, PATH does not matter. Set it to the empty string. (Which in this # implementation would cause nbd_internal_execvpe_init() to fail with ENOENT, if # the "file" parameter didn't contain a .) run "" empty/f; execve_fail empty/f ENOENT run "" fifo/f; execve_fail fifo/f EACCES run "" subdir/f; execve_fail subdir/f EACCES run "" nxregf/f; execve_fail nxregf/f EACCES run "" nxregf/f/; execve_fail nxregf/f/ ENOTDIR run "" symlink/f; execve_fail symlink/f ELOOP # This runs "expr 1 + 1". run0 "" bin/f expr 1 + 1; success bin/f,2 # This triggers the ENOEXEC branch in nbd_internal_fork_safe_execvpe(). # nbd_internal_fork_safe_execvpe() will first try # # execve("sh/f", {"sh/f", "arg1", NULL}, envp) # # hitting ENOEXEC. Then it will successfully call # # execve("/bin/sh", {"sh/f", "sh/f", "arg1", NULL}, envp) # # The shell script will get "sh/f" for $0 and "arg1" for $1, and print those # out. run0 "" sh/f sh arg1; success sh/f,"sh/f arg1" # In the tests below, the "file" parameter of execvpe() will not contain a # character. # # Show that PATH matters that way -- first, trigger an ENOENT in # nbd_internal_execvpe_init() by setting PATH to the empty string. run "" expr 1 + 1; init_fail ENOENT # Fall back to confstr(_CS_PATH) in nbd_internal_execvpe_init(), by unsetting # PATH. Verify the generated candidates by invoking "getconf PATH" here, and # appending "/expr" to each prefix. expected_output=$( path=$(command -p getconf PATH) IFS=: for p in $path; do printf '%s/%s\n' $p expr done command -p expr 1 + 1 ) run _ expr 1 + 1; success "${expected_output//$'\n'/,}" # Continue with tests where the "file" parameter of execvpe() does not contain a # character, but now set PATH to explicit prefix lists. # # Show that, if the last candidate fails execve() with an error number that # would not be fatal otherwise, we do get that error number. run empty:fifo:subdir:nxregf:symlink f execve_fail empty/f,fifo/f,subdir/f,nxregf/f,symlink/f ELOOP # Put a single prefix in PATH, such that it leads to a successful execution. # This exercises two things at the same time: (a) that # nbd_internal_execvpe_init() produces *one* candidate (i.e., that no is # seen), and (b) that nbd_internal_fork_safe_execvpe() succeeds for the *last* # candidate. Repeat the test with "expr" (called "f" under "bin") and the shell # script (called "f" under "sh", triggering the ENOEXEC branch). run0 bin f expr 1 + 1; success bin/f,2 run0 sh f sh arg1; success sh/f,"sh/f arg1" # Demonstrate that the order of candidates matters. The first invocation finds # "expr" (called "f" under "bin"), the second invocation finds the shell script # under "sh" (triggering the ENOEXEC branch). run0 empty:bin:sh f expr 1 + 1; success empty/f,bin/f,sh/f,2 run0 empty:sh:bin f sh arg1; success empty/f,sh/f,bin/f,"sh/f arg1" # Check the expansion of zero-length prefixes in PATH to ".", plus the # (non-)insertion of the "/" separator. run a/: f; execve_fail a/f,./f ENOENT run :a/ f; execve_fail ./f,a/f ENOENT run : f; execve_fail ./f,./f ENOENT pushd bin run0 : f expr 1 + 1; success ./f,./f,2 popd run :a/:::b/: f; execve_fail ./f,a/f,./f,./f,b/f,./f ENOENT libnbd-1.20.3/m4/0000755000175000017500000000000014675532654007131 5libnbd-1.20.3/m4/ac_c_compile_flags.m40000644000175000017500000000302014525371754013053 # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. # Originally from: # https://github.com/WinterMute/prboom/blob/master/autotools/ac_c_compile_flags.m4 # RWMJ: I adapted it to add the extra parameters and fixed a few bugs. # AC_C_COMPILE_FLAGS(VAR, FLAGS TO TEST, [CFLAGS_FOR_TEST = $CFLAGS]) # ---------------------------------------------------------- # Check if compiler flag $2 is supported, if so add it to $1. # Extra CFLAGS for the test can be passed in $3. AC_DEFUN([AC_C_COMPILE_FLAGS],[ CFLAGS_FOR_TEST="m4_default([$3], [$CFLAGS])" for flag in $2 do AC_MSG_CHECKING(whether the compiler supports $flag) SAVED_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS_FOR_TEST $flag" AC_COMPILE_IFELSE([AC_LANG_PROGRAM() ],[ AC_MSG_RESULT(yes) $1="${$1} $flag" ],[AC_MSG_RESULT(no)]) CFLAGS="$SAVED_CFLAGS" done ]) libnbd-1.20.3/m4/ax_pthread.m40000644000175000017500000005403414525371754011434 # =========================================================================== # https://www.gnu.org/software/autoconf-archive/ax_pthread.html # =========================================================================== # # SYNOPSIS # # AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) # # DESCRIPTION # # This macro figures out how to build C programs using POSIX threads. It # sets the PTHREAD_LIBS output variable to the threads library and linker # flags, and the PTHREAD_CFLAGS output variable to any special C compiler # flags that are needed. (The user can also force certain compiler # flags/libs to be tested by setting these environment variables.) # # Also sets PTHREAD_CC and PTHREAD_CXX to any special C compiler that is # needed for multi-threaded programs (defaults to the value of CC # respectively CXX otherwise). (This is necessary on e.g. AIX to use the # special cc_r/CC_r compiler alias.) # # NOTE: You are assumed to not only compile your program with these flags, # but also to link with them as well. For example, you might link with # $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS # $PTHREAD_CXX $CXXFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS # # If you are only building threaded programs, you may wish to use these # variables in your default LIBS, CFLAGS, and CC: # # LIBS="$PTHREAD_LIBS $LIBS" # CFLAGS="$CFLAGS $PTHREAD_CFLAGS" # CXXFLAGS="$CXXFLAGS $PTHREAD_CFLAGS" # CC="$PTHREAD_CC" # CXX="$PTHREAD_CXX" # # In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant # has a nonstandard name, this macro defines PTHREAD_CREATE_JOINABLE to # that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX). # # Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the # PTHREAD_PRIO_INHERIT symbol is defined when compiling with # PTHREAD_CFLAGS. # # ACTION-IF-FOUND is a list of shell commands to run if a threads library # is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it # is not found. If ACTION-IF-FOUND is not specified, the default action # will define HAVE_PTHREAD. # # Please let the authors know if this macro fails on any platform, or if # you have any other suggestions or comments. This macro was based on work # by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help # from M. Frigo), as well as ac_pthread and hb_pthread macros posted by # Alejandro Forero Cuervo to the autoconf macro repository. We are also # grateful for the helpful feedback of numerous users. # # Updated for Autoconf 2.68 by Daniel Richard G. # # LICENSE # # Copyright (c) 2008 Steven G. Johnson # Copyright (c) 2011 Daniel Richard G. # Copyright (c) 2019 Marc Stevens # # This program is free software: you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation, either version 3 of the License, or (at your # option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General # Public License for more details. # # You should have received a copy of the GNU General Public License along # with this program. If not, see . # # As a special exception, the respective Autoconf Macro's copyright owner # gives unlimited permission to copy, distribute and modify the configure # scripts that are the output of Autoconf when processing the Macro. You # need not follow the terms of the GNU General Public License when using # or distributing such scripts, even though portions of the text of the # Macro appear in them. The GNU General Public License (GPL) does govern # all other use of the material that constitutes the Autoconf Macro. # # This special exception to the GPL applies to versions of the Autoconf # Macro released by the Autoconf Archive. 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Don't try to run-time override # by AR_FLAGS because that was never working and AR_FLAGS is about to die. _LT_DECL([], [AR_FLAGS], [\@S|@{ARFLAGS-"\@S|@lt_ar_flags"}], [Flags to create an archive]) AC_CACHE_CHECK([for archiver @FILE support], [lt_cv_ar_at_file], [lt_cv_ar_at_file=no AC_COMPILE_IFELSE([AC_LANG_PROGRAM], [echo conftest.$ac_objext > conftest.lst lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&AS_MESSAGE_LOG_FD' AC_TRY_EVAL([lt_ar_try]) if test 0 -eq "$ac_status"; then # Ensure the archiver fails upon bogus file names. rm -f conftest.$ac_objext libconftest.a AC_TRY_EVAL([lt_ar_try]) if test 0 -ne "$ac_status"; then lt_cv_ar_at_file=@ fi fi rm -f conftest.* libconftest.a ]) ]) if test no = "$lt_cv_ar_at_file"; then archiver_list_spec= else archiver_list_spec=$lt_cv_ar_at_file fi _LT_DECL([], [archiver_list_spec], [1], [How to feed a file listing to the archiver]) ])# _LT_PROG_AR # _LT_CMD_OLD_ARCHIVE # ------------------- m4_defun([_LT_CMD_OLD_ARCHIVE], [_LT_PROG_AR AC_CHECK_TOOL(STRIP, strip, :) test -z "$STRIP" && STRIP=: _LT_DECL([], [STRIP], [1], [A symbol stripping program]) AC_CHECK_TOOL(RANLIB, ranlib, :) test -z "$RANLIB" && RANLIB=: _LT_DECL([], [RANLIB], [1], [Commands used to install an old-style archive]) # Determine commands to create old-style static archives. old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs' old_postinstall_cmds='chmod 644 $oldlib' old_postuninstall_cmds= if test -n "$RANLIB"; then case $host_os in bitrig* | openbsd*) old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib" ;; *) old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib" ;; esac old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib" fi case $host_os in darwin*) lock_old_archive_extraction=yes ;; *) lock_old_archive_extraction=no ;; esac _LT_DECL([], [old_postinstall_cmds], [2]) _LT_DECL([], [old_postuninstall_cmds], [2]) _LT_TAGDECL([], [old_archive_cmds], [2], [Commands used to build an old-style archive]) _LT_DECL([], [lock_old_archive_extraction], [0], [Whether to use a lock for old archive extraction]) ])# _LT_CMD_OLD_ARCHIVE # _LT_COMPILER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS, # [OUTPUT-FILE], [ACTION-SUCCESS], [ACTION-FAILURE]) # ---------------------------------------------------------------- # Check whether the given compiler option works AC_DEFUN([_LT_COMPILER_OPTION], [m4_require([_LT_FILEUTILS_DEFAULTS])dnl m4_require([_LT_DECL_SED])dnl AC_CACHE_CHECK([$1], [$2], [$2=no m4_if([$4], , [ac_outfile=conftest.$ac_objext], [ac_outfile=$4]) echo "$lt_simple_compile_test_code" > conftest.$ac_ext lt_compiler_flag="$3" ## exclude from sc_useless_quotes_in_assignment # Insert the option either (1) after the last *FLAGS variable, or # (2) before a word containing "conftest.", or (3) at the end. # Note that $ac_compile itself does not contain backslashes and begins # with a dollar sign (not a hyphen), so the echo should work correctly. # The option is referenced via a variable to avoid confusing sed. lt_compile=`echo "$ac_compile" | $SED \ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \ -e 's:$: $lt_compiler_flag:'` (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD) (eval "$lt_compile" 2>conftest.err) ac_status=$? cat conftest.err >&AS_MESSAGE_LOG_FD echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD if (exit $ac_status) && test -s "$ac_outfile"; then # The compiler can only warn and ignore the option if not recognized # So say no if there are warnings other than the usual output. $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then $2=yes fi fi $RM conftest* ]) if test yes = "[$]$2"; then m4_if([$5], , :, [$5]) else m4_if([$6], , :, [$6]) fi ])# _LT_COMPILER_OPTION # Old name: AU_ALIAS([AC_LIBTOOL_COMPILER_OPTION], [_LT_COMPILER_OPTION]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LIBTOOL_COMPILER_OPTION], []) # _LT_LINKER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS, # [ACTION-SUCCESS], [ACTION-FAILURE]) # ---------------------------------------------------- # Check whether the given linker option works AC_DEFUN([_LT_LINKER_OPTION], [m4_require([_LT_FILEUTILS_DEFAULTS])dnl m4_require([_LT_DECL_SED])dnl AC_CACHE_CHECK([$1], [$2], [$2=no save_LDFLAGS=$LDFLAGS LDFLAGS="$LDFLAGS $3" echo "$lt_simple_link_test_code" > conftest.$ac_ext if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then # The linker can only warn and ignore the option if not recognized # So say no if there are warnings if test -s conftest.err; then # Append any errors to the config.log. cat conftest.err 1>&AS_MESSAGE_LOG_FD $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 if diff conftest.exp conftest.er2 >/dev/null; then $2=yes fi else $2=yes fi fi $RM -r conftest* LDFLAGS=$save_LDFLAGS ]) if test yes = "[$]$2"; then m4_if([$4], , :, [$4]) else m4_if([$5], , :, [$5]) fi ])# _LT_LINKER_OPTION # Old name: AU_ALIAS([AC_LIBTOOL_LINKER_OPTION], [_LT_LINKER_OPTION]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LIBTOOL_LINKER_OPTION], []) # LT_CMD_MAX_LEN #--------------- AC_DEFUN([LT_CMD_MAX_LEN], [AC_REQUIRE([AC_CANONICAL_HOST])dnl # find the maximum length of command line arguments AC_MSG_CHECKING([the maximum length of command line arguments]) AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl i=0 teststring=ABCD case $build_os in msdosdjgpp*) # On DJGPP, this test can blow up pretty badly due to problems in libc # (any single argument exceeding 2000 bytes causes a buffer overrun # during glob expansion). Even if it were fixed, the result of this # check would be larger than it should be. lt_cv_sys_max_cmd_len=12288; # 12K is about right ;; gnu*) # Under GNU Hurd, this test is not required because there is # no limit to the length of command line arguments. # Libtool will interpret -1 as no limit whatsoever lt_cv_sys_max_cmd_len=-1; ;; cygwin* | mingw* | cegcc*) # On Win9x/ME, this test blows up -- it succeeds, but takes # about 5 minutes as the teststring grows exponentially. # Worse, since 9x/ME are not pre-emptively multitasking, # you end up with a "frozen" computer, even though with patience # the test eventually succeeds (with a max line length of 256k). # Instead, let's just punt: use the minimum linelength reported by # all of the supported platforms: 8192 (on NT/2K/XP). lt_cv_sys_max_cmd_len=8192; ;; mint*) # On MiNT this can take a long time and run out of memory. lt_cv_sys_max_cmd_len=8192; ;; amigaos*) # On AmigaOS with pdksh, this test takes hours, literally. # So we just punt and use a minimum line length of 8192. lt_cv_sys_max_cmd_len=8192; ;; bitrig* | darwin* | dragonfly* | freebsd* | midnightbsd* | netbsd* | openbsd*) # This has been around since 386BSD, at least. Likely further. if test -x /sbin/sysctl; then lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax` elif test -x /usr/sbin/sysctl; then lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax` else lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs fi # And add a safety zone lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` ;; interix*) # We know the value 262144 and hardcode it with a safety zone (like BSD) lt_cv_sys_max_cmd_len=196608 ;; os2*) # The test takes a long time on OS/2. lt_cv_sys_max_cmd_len=8192 ;; osf*) # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not # nice to cause kernel panics so lets avoid the loop below. # First set a reasonable default. lt_cv_sys_max_cmd_len=16384 # if test -x /sbin/sysconfig; then case `/sbin/sysconfig -q proc exec_disable_arg_limit` in *1*) lt_cv_sys_max_cmd_len=-1 ;; esac fi ;; sco3.2v5*) lt_cv_sys_max_cmd_len=102400 ;; sysv5* | sco5v6* | sysv4.2uw2*) kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null` if test -n "$kargmax"; then lt_cv_sys_max_cmd_len=`echo $kargmax | $SED 's/.*[[ ]]//'` else lt_cv_sys_max_cmd_len=32768 fi ;; *) lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null` if test -n "$lt_cv_sys_max_cmd_len" && \ test undefined != "$lt_cv_sys_max_cmd_len"; then lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` else # Make teststring a little bigger before we do anything with it. # a 1K string should be a reasonable start. for i in 1 2 3 4 5 6 7 8; do teststring=$teststring$teststring done SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}} # If test is not a shell built-in, we'll probably end up computing a # maximum length that is only half of the actual maximum length, but # we can't tell. while { test X`env echo "$teststring$teststring" 2>/dev/null` \ = "X$teststring$teststring"; } >/dev/null 2>&1 && test 17 != "$i" # 1/2 MB should be enough do i=`expr $i + 1` teststring=$teststring$teststring done # Only check the string length outside the loop. lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1` teststring= # Add a significant safety factor because C++ compilers can tack on # massive amounts of additional arguments before passing them to the # linker. It appears as though 1/2 is a usable value. lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2` fi ;; esac ]) if test -n "$lt_cv_sys_max_cmd_len"; then AC_MSG_RESULT($lt_cv_sys_max_cmd_len) else AC_MSG_RESULT(none) fi max_cmd_len=$lt_cv_sys_max_cmd_len _LT_DECL([], [max_cmd_len], [0], [What is the maximum length of a command?]) ])# LT_CMD_MAX_LEN # Old name: AU_ALIAS([AC_LIBTOOL_SYS_MAX_CMD_LEN], [LT_CMD_MAX_LEN]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN], []) # _LT_HEADER_DLFCN # ---------------- m4_defun([_LT_HEADER_DLFCN], [AC_CHECK_HEADERS([dlfcn.h], [], [], [AC_INCLUDES_DEFAULT])dnl ])# _LT_HEADER_DLFCN # _LT_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE, # ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING) # ---------------------------------------------------------------- m4_defun([_LT_TRY_DLOPEN_SELF], [m4_require([_LT_HEADER_DLFCN])dnl if test yes = "$cross_compiling"; then : [$4] else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF [#line $LINENO "configure" #include "confdefs.h" #if HAVE_DLFCN_H #include #endif #include #ifdef RTLD_GLOBAL # define LT_DLGLOBAL RTLD_GLOBAL #else # ifdef DL_GLOBAL # define LT_DLGLOBAL DL_GLOBAL # else # define LT_DLGLOBAL 0 # endif #endif /* We may have to define LT_DLLAZY_OR_NOW in the command line if we find out it does not work in some platform. */ #ifndef LT_DLLAZY_OR_NOW # ifdef RTLD_LAZY # define LT_DLLAZY_OR_NOW RTLD_LAZY # else # ifdef DL_LAZY # define LT_DLLAZY_OR_NOW DL_LAZY # else # ifdef RTLD_NOW # define LT_DLLAZY_OR_NOW RTLD_NOW # else # ifdef DL_NOW # define LT_DLLAZY_OR_NOW DL_NOW # else # define LT_DLLAZY_OR_NOW 0 # endif # endif # endif # endif #endif /* When -fvisibility=hidden is used, assume the code has been annotated correspondingly for the symbols needed. */ #if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)) int fnord () __attribute__((visibility("default"))); #endif int fnord () { return 42; } int main () { void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW); int status = $lt_dlunknown; if (self) { if (dlsym (self,"fnord")) status = $lt_dlno_uscore; else { if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore; else puts (dlerror ()); } /* dlclose (self); */ } else puts (dlerror ()); return status; }] _LT_EOF if AC_TRY_EVAL(ac_link) && test -s "conftest$ac_exeext" 2>/dev/null; then (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null lt_status=$? case x$lt_status in x$lt_dlno_uscore) $1 ;; x$lt_dlneed_uscore) $2 ;; x$lt_dlunknown|x*) $3 ;; esac else : # compilation failed $3 fi fi rm -fr conftest* ])# _LT_TRY_DLOPEN_SELF # LT_SYS_DLOPEN_SELF # ------------------ AC_DEFUN([LT_SYS_DLOPEN_SELF], [m4_require([_LT_HEADER_DLFCN])dnl if test yes != "$enable_dlopen"; then enable_dlopen=unknown enable_dlopen_self=unknown enable_dlopen_self_static=unknown else lt_cv_dlopen=no lt_cv_dlopen_libs= case $host_os in beos*) lt_cv_dlopen=load_add_on lt_cv_dlopen_libs= lt_cv_dlopen_self=yes ;; mingw* | pw32* | cegcc*) lt_cv_dlopen=LoadLibrary lt_cv_dlopen_libs= ;; cygwin*) lt_cv_dlopen=dlopen lt_cv_dlopen_libs= ;; darwin*) # if libdl is installed we need to link against it AC_CHECK_LIB([dl], [dlopen], [lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-ldl],[ lt_cv_dlopen=dyld lt_cv_dlopen_libs= lt_cv_dlopen_self=yes ]) ;; tpf*) # Don't try to run any link tests for TPF. We know it's impossible # because TPF is a cross-compiler, and we know how we open DSOs. lt_cv_dlopen=dlopen lt_cv_dlopen_libs= lt_cv_dlopen_self=no ;; *) AC_CHECK_FUNC([shl_load], [lt_cv_dlopen=shl_load], [AC_CHECK_LIB([dld], [shl_load], [lt_cv_dlopen=shl_load lt_cv_dlopen_libs=-ldld], [AC_CHECK_FUNC([dlopen], [lt_cv_dlopen=dlopen], [AC_CHECK_LIB([dl], [dlopen], [lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-ldl], [AC_CHECK_LIB([svld], [dlopen], [lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-lsvld], [AC_CHECK_LIB([dld], [dld_link], [lt_cv_dlopen=dld_link lt_cv_dlopen_libs=-ldld]) ]) ]) ]) ]) ]) ;; esac if test no = "$lt_cv_dlopen"; then enable_dlopen=no else enable_dlopen=yes fi case $lt_cv_dlopen in dlopen) save_CPPFLAGS=$CPPFLAGS test yes = "$ac_cv_header_dlfcn_h" && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H" save_LDFLAGS=$LDFLAGS wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\" save_LIBS=$LIBS LIBS="$lt_cv_dlopen_libs $LIBS" AC_CACHE_CHECK([whether a program can dlopen itself], lt_cv_dlopen_self, [dnl _LT_TRY_DLOPEN_SELF( lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes, lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross) ]) if test yes = "$lt_cv_dlopen_self"; then wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\" AC_CACHE_CHECK([whether a statically linked program can dlopen itself], lt_cv_dlopen_self_static, [dnl _LT_TRY_DLOPEN_SELF( lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=no, lt_cv_dlopen_self_static=cross) ]) fi CPPFLAGS=$save_CPPFLAGS LDFLAGS=$save_LDFLAGS LIBS=$save_LIBS ;; esac case $lt_cv_dlopen_self in yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;; *) enable_dlopen_self=unknown ;; esac case $lt_cv_dlopen_self_static in yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;; *) enable_dlopen_self_static=unknown ;; esac fi _LT_DECL([dlopen_support], [enable_dlopen], [0], [Whether dlopen is supported]) _LT_DECL([dlopen_self], [enable_dlopen_self], [0], [Whether dlopen of programs is supported]) _LT_DECL([dlopen_self_static], [enable_dlopen_self_static], [0], [Whether dlopen of statically linked programs is supported]) ])# LT_SYS_DLOPEN_SELF # Old name: AU_ALIAS([AC_LIBTOOL_DLOPEN_SELF], [LT_SYS_DLOPEN_SELF]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LIBTOOL_DLOPEN_SELF], []) # _LT_COMPILER_C_O([TAGNAME]) # --------------------------- # Check to see if options -c and -o are simultaneously supported by compiler. # This macro does not hard code the compiler like AC_PROG_CC_C_O. m4_defun([_LT_COMPILER_C_O], [m4_require([_LT_DECL_SED])dnl m4_require([_LT_FILEUTILS_DEFAULTS])dnl m4_require([_LT_TAG_COMPILER])dnl AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext], [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)], [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=no $RM -r conftest 2>/dev/null mkdir conftest cd conftest mkdir out echo "$lt_simple_compile_test_code" > conftest.$ac_ext lt_compiler_flag="-o out/conftest2.$ac_objext" # Insert the option either (1) after the last *FLAGS variable, or # (2) before a word containing "conftest.", or (3) at the end. # Note that $ac_compile itself does not contain backslashes and begins # with a dollar sign (not a hyphen), so the echo should work correctly. lt_compile=`echo "$ac_compile" | $SED \ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \ -e 's:$: $lt_compiler_flag:'` (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD) (eval "$lt_compile" 2>out/conftest.err) ac_status=$? cat out/conftest.err >&AS_MESSAGE_LOG_FD echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD if (exit $ac_status) && test -s out/conftest2.$ac_objext then # The compiler can only warn and ignore the option if not recognized # So say no if there are warnings $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2 if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then _LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes fi fi chmod u+w . 2>&AS_MESSAGE_LOG_FD $RM conftest* # SGI C++ compiler will create directory out/ii_files/ for # template instantiation test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files $RM out/* && rmdir out cd .. $RM -r conftest $RM conftest* ]) _LT_TAGDECL([compiler_c_o], [lt_cv_prog_compiler_c_o], [1], [Does compiler simultaneously support -c and -o options?]) ])# _LT_COMPILER_C_O # _LT_COMPILER_FILE_LOCKS([TAGNAME]) # ---------------------------------- # Check to see if we can do hard links to lock some files if needed m4_defun([_LT_COMPILER_FILE_LOCKS], [m4_require([_LT_ENABLE_LOCK])dnl m4_require([_LT_FILEUTILS_DEFAULTS])dnl _LT_COMPILER_C_O([$1]) hard_links=nottested if test no = "$_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)" && test no != "$need_locks"; then # do not overwrite the value of need_locks provided by the user AC_MSG_CHECKING([if we can lock with hard links]) hard_links=yes $RM conftest* ln conftest.a conftest.b 2>/dev/null && hard_links=no touch conftest.a ln conftest.a conftest.b 2>&5 || hard_links=no ln conftest.a conftest.b 2>/dev/null && hard_links=no AC_MSG_RESULT([$hard_links]) if test no = "$hard_links"; then AC_MSG_WARN(['$CC' does not support '-c -o', so 'make -j' may be unsafe]) need_locks=warn fi else need_locks=no fi _LT_DECL([], [need_locks], [1], [Must we lock files when doing compilation?]) ])# _LT_COMPILER_FILE_LOCKS # _LT_CHECK_OBJDIR # ---------------- m4_defun([_LT_CHECK_OBJDIR], [AC_CACHE_CHECK([for objdir], [lt_cv_objdir], [rm -f .libs 2>/dev/null mkdir .libs 2>/dev/null if test -d .libs; then lt_cv_objdir=.libs else # MS-DOS does not allow filenames that begin with a dot. lt_cv_objdir=_libs fi rmdir .libs 2>/dev/null]) objdir=$lt_cv_objdir _LT_DECL([], [objdir], [0], [The name of the directory that contains temporary libtool files])dnl m4_pattern_allow([LT_OBJDIR])dnl AC_DEFINE_UNQUOTED([LT_OBJDIR], "$lt_cv_objdir/", [Define to the sub-directory where libtool stores uninstalled libraries.]) ])# _LT_CHECK_OBJDIR # _LT_LINKER_HARDCODE_LIBPATH([TAGNAME]) # -------------------------------------- # Check hardcoding attributes. m4_defun([_LT_LINKER_HARDCODE_LIBPATH], [AC_MSG_CHECKING([how to hardcode library paths into programs]) _LT_TAGVAR(hardcode_action, $1)= if test -n "$_LT_TAGVAR(hardcode_libdir_flag_spec, $1)" || test -n "$_LT_TAGVAR(runpath_var, $1)" || test yes = "$_LT_TAGVAR(hardcode_automatic, $1)"; then # We can hardcode non-existent directories. if test no != "$_LT_TAGVAR(hardcode_direct, $1)" && # If the only mechanism to avoid hardcoding is shlibpath_var, we # have to relink, otherwise we might link with an installed library # when we should be linking with a yet-to-be-installed one ## test no != "$_LT_TAGVAR(hardcode_shlibpath_var, $1)" && test no != "$_LT_TAGVAR(hardcode_minus_L, $1)"; then # Linking always hardcodes the temporary library directory. _LT_TAGVAR(hardcode_action, $1)=relink else # We can link without hardcoding, and we can hardcode nonexisting dirs. _LT_TAGVAR(hardcode_action, $1)=immediate fi else # We cannot hardcode anything, or else we can only hardcode existing # directories. _LT_TAGVAR(hardcode_action, $1)=unsupported fi AC_MSG_RESULT([$_LT_TAGVAR(hardcode_action, $1)]) if test relink = "$_LT_TAGVAR(hardcode_action, $1)" || test yes = "$_LT_TAGVAR(inherit_rpath, $1)"; then # Fast installation is not supported enable_fast_install=no elif test yes = "$shlibpath_overrides_runpath" || test no = "$enable_shared"; 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What could be older than Ultrix?!! ;)] # Character class describing NM global symbol codes. symcode='[[BCDEGRST]]' # Regexp to match symbols that can be accessed directly from C. sympat='\([[_A-Za-z]][[_A-Za-z0-9]]*\)' # Define system-specific variables. case $host_os in aix*) symcode='[[BCDT]]' ;; cygwin* | mingw* | pw32* | cegcc*) symcode='[[ABCDGISTW]]' ;; hpux*) if test ia64 = "$host_cpu"; then symcode='[[ABCDEGRST]]' fi ;; irix* | nonstopux*) symcode='[[BCDEGRST]]' ;; osf*) symcode='[[BCDEGQRST]]' ;; solaris*) symcode='[[BDRT]]' ;; sco3.2v5*) symcode='[[DT]]' ;; sysv4.2uw2*) symcode='[[DT]]' ;; sysv5* | sco5v6* | unixware* | OpenUNIX*) symcode='[[ABDT]]' ;; sysv4) symcode='[[DFNSTU]]' ;; esac # If we're using GNU nm, then use its standard symbol codes. case `$NM -V 2>&1` in *GNU* | *'with BFD'*) symcode='[[ABCDGIRSTW]]' ;; esac if test "$lt_cv_nm_interface" = "MS dumpbin"; then # Gets list of data symbols to import. lt_cv_sys_global_symbol_to_import="$SED -n -e 's/^I .* \(.*\)$/\1/p'" # Adjust the below global symbol transforms to fixup imported variables. lt_cdecl_hook=" -e 's/^I .* \(.*\)$/extern __declspec(dllimport) char \1;/p'" lt_c_name_hook=" -e 's/^I .* \(.*\)$/ {\"\1\", (void *) 0},/p'" lt_c_name_lib_hook="\ -e 's/^I .* \(lib.*\)$/ {\"\1\", (void *) 0},/p'\ -e 's/^I .* \(.*\)$/ {\"lib\1\", (void *) 0},/p'" else # Disable hooks by default. lt_cv_sys_global_symbol_to_import= lt_cdecl_hook= lt_c_name_hook= lt_c_name_lib_hook= fi # Transform an extracted symbol line into a proper C declaration. # Some systems (esp. on ia64) link data and code symbols differently, # so use this general approach. lt_cv_sys_global_symbol_to_cdecl="$SED -n"\ $lt_cdecl_hook\ " -e 's/^T .* \(.*\)$/extern int \1();/p'"\ " -e 's/^$symcode$symcode* .* \(.*\)$/extern char \1;/p'" # Transform an extracted symbol line into symbol name and symbol address lt_cv_sys_global_symbol_to_c_name_address="$SED -n"\ $lt_c_name_hook\ " -e 's/^: \(.*\) .*$/ {\"\1\", (void *) 0},/p'"\ " -e 's/^$symcode$symcode* .* \(.*\)$/ {\"\1\", (void *) \&\1},/p'" # Transform an extracted symbol line into symbol name with lib prefix and # symbol address. lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="$SED -n"\ $lt_c_name_lib_hook\ " -e 's/^: \(.*\) .*$/ {\"\1\", (void *) 0},/p'"\ " -e 's/^$symcode$symcode* .* \(lib.*\)$/ {\"\1\", (void *) \&\1},/p'"\ " -e 's/^$symcode$symcode* .* \(.*\)$/ {\"lib\1\", (void *) \&\1},/p'" # Handle CRLF in mingw tool chain opt_cr= case $build_os in mingw*) opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp ;; esac # Try without a prefix underscore, then with it. for ac_symprfx in "" "_"; do # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol. symxfrm="\\1 $ac_symprfx\\2 \\2" # Write the raw and C identifiers. if test "$lt_cv_nm_interface" = "MS dumpbin"; then # Fake it for dumpbin and say T for any non-static function, # D for any global variable and I for any imported variable. # Also find C++ and __fastcall symbols from MSVC++ or ICC, # which start with @ or ?. lt_cv_sys_global_symbol_pipe="$AWK ['"\ " {last_section=section; section=\$ 3};"\ " /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\ " /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\ " /^ *Symbol name *: /{split(\$ 0,sn,\":\"); si=substr(sn[2],2)};"\ " /^ *Type *: code/{print \"T\",si,substr(si,length(prfx))};"\ " /^ *Type *: data/{print \"I\",si,substr(si,length(prfx))};"\ " \$ 0!~/External *\|/{next};"\ " / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\ " {if(hide[section]) next};"\ " {f=\"D\"}; \$ 0~/\(\).*\|/{f=\"T\"};"\ " {split(\$ 0,a,/\||\r/); split(a[2],s)};"\ " s[1]~/^[@?]/{print f,s[1],s[1]; next};"\ " s[1]~prfx {split(s[1],t,\"@\"); print f,t[1],substr(t[1],length(prfx))}"\ " ' prfx=^$ac_symprfx]" else lt_cv_sys_global_symbol_pipe="$SED -n -e 's/^.*[[ ]]\($symcode$symcode*\)[[ ]][[ ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'" fi lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | $SED '/ __gnu_lto/d'" # Check to see that the pipe works correctly. pipe_works=no rm -f conftest* cat > conftest.$ac_ext <<_LT_EOF #ifdef __cplusplus extern "C" { #endif char nm_test_var; void nm_test_func(void); void nm_test_func(void){} #ifdef __cplusplus } #endif int main(){nm_test_var='a';nm_test_func();return(0);} _LT_EOF if AC_TRY_EVAL(ac_compile); then # Now try to grab the symbols. nlist=conftest.nm if AC_TRY_EVAL(NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) && test -s "$nlist"; then # Try sorting and uniquifying the output. if sort "$nlist" | uniq > "$nlist"T; then mv -f "$nlist"T "$nlist" else rm -f "$nlist"T fi # Make sure that we snagged all the symbols we need. if $GREP ' nm_test_var$' "$nlist" >/dev/null; then if $GREP ' nm_test_func$' "$nlist" >/dev/null; then cat <<_LT_EOF > conftest.$ac_ext /* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ #if defined _WIN32 || defined __CYGWIN__ || defined _WIN32_WCE /* DATA imports from DLLs on WIN32 can't be const, because runtime relocations are performed -- see ld's documentation on pseudo-relocs. */ # define LT@&t@_DLSYM_CONST #elif defined __osf__ /* This system does not cope well with relocations in const data. */ # define LT@&t@_DLSYM_CONST #else # define LT@&t@_DLSYM_CONST const #endif #ifdef __cplusplus extern "C" { #endif _LT_EOF # Now generate the symbol file. eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext' cat <<_LT_EOF >> conftest.$ac_ext /* The mapping between symbol names and symbols. */ LT@&t@_DLSYM_CONST struct { const char *name; void *address; } lt__PROGRAM__LTX_preloaded_symbols[[]] = { { "@PROGRAM@", (void *) 0 }, _LT_EOF $SED "s/^$symcode$symcode* .* \(.*\)$/ {\"\1\", (void *) \&\1},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext cat <<\_LT_EOF >> conftest.$ac_ext {0, (void *) 0} }; /* This works around a problem in FreeBSD linker */ #ifdef FREEBSD_WORKAROUND static const void *lt_preloaded_setup() { return lt__PROGRAM__LTX_preloaded_symbols; } #endif #ifdef __cplusplus } #endif _LT_EOF # Now try linking the two files. mv conftest.$ac_objext conftstm.$ac_objext lt_globsym_save_LIBS=$LIBS lt_globsym_save_CFLAGS=$CFLAGS LIBS=conftstm.$ac_objext CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)" if AC_TRY_EVAL(ac_link) && test -s conftest$ac_exeext; then pipe_works=yes fi LIBS=$lt_globsym_save_LIBS CFLAGS=$lt_globsym_save_CFLAGS else echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD fi else echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD fi else echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD fi else echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD cat conftest.$ac_ext >&5 fi rm -rf conftest* conftst* # Do not use the global_symbol_pipe unless it works. if test yes = "$pipe_works"; then break else lt_cv_sys_global_symbol_pipe= fi done ]) if test -z "$lt_cv_sys_global_symbol_pipe"; then lt_cv_sys_global_symbol_to_cdecl= fi if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then AC_MSG_RESULT(failed) else AC_MSG_RESULT(ok) fi # Response file support. if test "$lt_cv_nm_interface" = "MS dumpbin"; then nm_file_list_spec='@' elif $NM --help 2>/dev/null | grep '[[@]]FILE' >/dev/null; then nm_file_list_spec='@' fi _LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1], [Take the output of nm and produce a listing of raw symbols and C names]) _LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1], [Transform the output of nm in a proper C declaration]) _LT_DECL([global_symbol_to_import], [lt_cv_sys_global_symbol_to_import], [1], [Transform the output of nm into a list of symbols to manually relocate]) _LT_DECL([global_symbol_to_c_name_address], [lt_cv_sys_global_symbol_to_c_name_address], [1], [Transform the output of nm in a C name address pair]) _LT_DECL([global_symbol_to_c_name_address_lib_prefix], [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1], [Transform the output of nm in a C name address pair when lib prefix is needed]) _LT_DECL([nm_interface], [lt_cv_nm_interface], [1], [The name lister interface]) _LT_DECL([], [nm_file_list_spec], [1], [Specify filename containing input files for $NM]) ]) # _LT_CMD_GLOBAL_SYMBOLS # _LT_COMPILER_PIC([TAGNAME]) # --------------------------- m4_defun([_LT_COMPILER_PIC], [m4_require([_LT_TAG_COMPILER])dnl _LT_TAGVAR(lt_prog_compiler_wl, $1)= _LT_TAGVAR(lt_prog_compiler_pic, $1)= _LT_TAGVAR(lt_prog_compiler_static, $1)= m4_if([$1], [CXX], [ # C++ specific cases for pic, static, wl, etc. if test yes = "$GXX"; then _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' case $host_os in aix*) # All AIX code is PIC. if test ia64 = "$host_cpu"; then # AIX 5 now supports IA64 processor _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' fi _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' ;; amigaos*) case $host_cpu in powerpc) # see comment about AmigaOS4 .so support _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' ;; m68k) # FIXME: we need at least 68020 code to build shared libraries, but # adding the '-m68020' flag to GCC prevents building anything better, # like '-m68040'. _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4' ;; esac ;; beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*) # PIC is the default for these OSes. ;; mingw* | cygwin* | os2* | pw32* | cegcc*) # This hack is so that the source file can tell whether it is being # built for inclusion in a dll (and should export symbols for example). # Although the cygwin gcc ignores -fPIC, still need this for old-style # (--disable-auto-import) libraries m4_if([$1], [GCJ], [], [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) case $host_os in os2*) _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-static' ;; esac ;; darwin* | rhapsody*) # PIC is the default on this platform # Common symbols not allowed in MH_DYLIB files _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common' ;; *djgpp*) # DJGPP does not support shared libraries at all _LT_TAGVAR(lt_prog_compiler_pic, $1)= ;; haiku*) # PIC is the default for Haiku. # The "-static" flag exists, but is broken. _LT_TAGVAR(lt_prog_compiler_static, $1)= ;; interix[[3-9]]*) # Interix 3.x gcc -fpic/-fPIC options generate broken code. # Instead, we relocate shared libraries at runtime. ;; sysv4*MP*) if test -d /usr/nec; then _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic fi ;; hpux*) # PIC is the default for 64-bit PA HP-UX, but not for 32-bit # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag # sets the default TLS model and affects inlining. case $host_cpu in hppa*64*) ;; *) _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' ;; esac ;; *qnx* | *nto*) # QNX uses GNU C++, but need to define -shared option too, otherwise # it will coredump. _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' ;; *) _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' ;; esac else case $host_os in aix[[4-9]]*) # All AIX code is PIC. if test ia64 = "$host_cpu"; then # AIX 5 now supports IA64 processor _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' else _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp' fi ;; chorus*) case $cc_basename in cxch68*) # Green Hills C++ Compiler # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a" ;; esac ;; mingw* | cygwin* | os2* | pw32* | cegcc*) # This hack is so that the source file can tell whether it is being # built for inclusion in a dll (and should export symbols for example). m4_if([$1], [GCJ], [], [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) ;; dgux*) case $cc_basename in ec++*) _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' ;; ghcx*) # Green Hills C++ Compiler _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' ;; *) ;; esac ;; freebsd* | dragonfly* | midnightbsd*) # FreeBSD uses GNU C++ ;; hpux9* | hpux10* | hpux11*) case $cc_basename in CC*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-a ${wl}archive' if test ia64 != "$host_cpu"; then _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z' fi ;; aCC*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-a ${wl}archive' case $host_cpu in hppa*64*|ia64*) # +Z the default ;; *) _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z' ;; esac ;; *) ;; esac ;; interix*) # This is c89, which is MS Visual C++ (no shared libs) # Anyone wants to do a port? ;; irix5* | irix6* | nonstopux*) case $cc_basename in CC*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' # CC pic flag -KPIC is the default. ;; *) ;; esac ;; linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) case $cc_basename in KCC*) # KAI C++ Compiler _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' ;; ecpc* ) # old Intel C++ for x86_64, which still supported -KPIC. _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' ;; icpc* ) # Intel C++, used to be incompatible with GCC. # ICC 10 doesn't accept -KPIC any more. _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' ;; pgCC* | pgcpp*) # Portland Group C++ compiler _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; cxx*) # Compaq C++ # Make sure the PIC flag is empty. It appears that all Alpha # Linux and Compaq Tru64 Unix objects are PIC. _LT_TAGVAR(lt_prog_compiler_pic, $1)= _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' ;; xlc* | xlC* | bgxl[[cC]]* | mpixl[[cC]]*) # IBM XL 8.0, 9.0 on PPC and BlueGene _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic' _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink' ;; *) case `$CC -V 2>&1 | $SED 5q` in *Sun\ C*) # Sun C++ 5.9 _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ' ;; esac ;; esac ;; lynxos*) ;; m88k*) ;; mvs*) case $cc_basename in cxx*) _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall' ;; *) ;; esac ;; netbsd*) ;; *qnx* | *nto*) # QNX uses GNU C++, but need to define -shared option too, otherwise # it will coredump. _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' ;; osf3* | osf4* | osf5*) case $cc_basename in KCC*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,' ;; RCC*) # Rational C++ 2.4.1 _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' ;; cxx*) # Digital/Compaq C++ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' # Make sure the PIC flag is empty. It appears that all Alpha # Linux and Compaq Tru64 Unix objects are PIC. _LT_TAGVAR(lt_prog_compiler_pic, $1)= _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' ;; *) ;; esac ;; psos*) ;; solaris*) case $cc_basename in CC* | sunCC*) # Sun C++ 4.2, 5.x and Centerline C++ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ' ;; gcx*) # Green Hills C++ Compiler _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC' ;; *) ;; esac ;; sunos4*) case $cc_basename in CC*) # Sun C++ 4.x _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; lcc*) # Lucid _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' ;; *) ;; esac ;; sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*) case $cc_basename in CC*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; esac ;; tandem*) case $cc_basename in NCC*) # NonStop-UX NCC 3.20 _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' ;; *) ;; esac ;; vxworks*) ;; *) _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no ;; esac fi ], [ if test yes = "$GCC"; then _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' case $host_os in aix*) # All AIX code is PIC. if test ia64 = "$host_cpu"; then # AIX 5 now supports IA64 processor _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' fi _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' ;; amigaos*) case $host_cpu in powerpc) # see comment about AmigaOS4 .so support _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' ;; m68k) # FIXME: we need at least 68020 code to build shared libraries, but # adding the '-m68020' flag to GCC prevents building anything better, # like '-m68040'. _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4' ;; esac ;; beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*) # PIC is the default for these OSes. ;; mingw* | cygwin* | pw32* | os2* | cegcc*) # This hack is so that the source file can tell whether it is being # built for inclusion in a dll (and should export symbols for example). # Although the cygwin gcc ignores -fPIC, still need this for old-style # (--disable-auto-import) libraries m4_if([$1], [GCJ], [], [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) case $host_os in os2*) _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-static' ;; esac ;; darwin* | rhapsody*) # PIC is the default on this platform # Common symbols not allowed in MH_DYLIB files _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common' ;; haiku*) # PIC is the default for Haiku. # The "-static" flag exists, but is broken. _LT_TAGVAR(lt_prog_compiler_static, $1)= ;; hpux*) # PIC is the default for 64-bit PA HP-UX, but not for 32-bit # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag # sets the default TLS model and affects inlining. case $host_cpu in hppa*64*) # +Z the default ;; *) _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' ;; esac ;; interix[[3-9]]*) # Interix 3.x gcc -fpic/-fPIC options generate broken code. # Instead, we relocate shared libraries at runtime. ;; msdosdjgpp*) # Just because we use GCC doesn't mean we suddenly get shared libraries # on systems that don't support them. _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no enable_shared=no ;; *nto* | *qnx*) # QNX uses GNU C++, but need to define -shared option too, otherwise # it will coredump. _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' ;; sysv4*MP*) if test -d /usr/nec; then _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic fi ;; *) _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' ;; esac case $cc_basename in nvcc*) # Cuda Compiler Driver 2.2 _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Xlinker ' if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then _LT_TAGVAR(lt_prog_compiler_pic, $1)="-Xcompiler $_LT_TAGVAR(lt_prog_compiler_pic, $1)" fi ;; esac else # PORTME Check for flag to pass linker flags through the system compiler. case $host_os in aix*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' if test ia64 = "$host_cpu"; then # AIX 5 now supports IA64 processor _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' else _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp' fi ;; darwin* | rhapsody*) # PIC is the default on this platform # Common symbols not allowed in MH_DYLIB files _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common' case $cc_basename in nagfor*) # NAG Fortran compiler _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,-Wl,,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; esac ;; mingw* | cygwin* | pw32* | os2* | cegcc*) # This hack is so that the source file can tell whether it is being # built for inclusion in a dll (and should export symbols for example). m4_if([$1], [GCJ], [], [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) case $host_os in os2*) _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-static' ;; esac ;; hpux9* | hpux10* | hpux11*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but # not for PA HP-UX. case $host_cpu in hppa*64*|ia64*) # +Z the default ;; *) _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z' ;; esac # Is there a better lt_prog_compiler_static that works with the bundled CC? _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-a ${wl}archive' ;; irix5* | irix6* | nonstopux*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' # PIC (with -KPIC) is the default. _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' ;; linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) case $cc_basename in # old Intel for x86_64, which still supported -KPIC. ecc*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' ;; # icc used to be incompatible with GCC. # ICC 10 doesn't accept -KPIC any more. icc* | ifort*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' ;; # Lahey Fortran 8.1. lf95*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared' _LT_TAGVAR(lt_prog_compiler_static, $1)='--static' ;; nagfor*) # NAG Fortran compiler _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,-Wl,,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; tcc*) # Fabrice Bellard et al's Tiny C Compiler _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' ;; pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*) # Portland Group compilers (*not* the Pentium gcc compiler, # which looks to be a dead project) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; ccc*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' # All Alpha code is PIC. _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' ;; xl* | bgxl* | bgf* | mpixl*) # IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic' _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink' ;; *) case `$CC -V 2>&1 | $SED 5q` in *Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [[1-7]].* | *Sun*Fortran*\ 8.[[0-3]]*) # Sun Fortran 8.3 passes all unrecognized flags to the linker _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' _LT_TAGVAR(lt_prog_compiler_wl, $1)='' ;; *Sun\ F* | *Sun*Fortran*) _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ' ;; *Sun\ C*) # Sun C 5.9 _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' ;; *Intel*\ [[CF]]*Compiler*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' ;; *Portland\ Group*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; esac ;; esac ;; newsos6) _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; 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then _LT_TAGVAR(lt_prog_compiler_pic, $1)='-Kconform_pic' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' fi ;; sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; unicos*) _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no ;; uts4*) _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' ;; *) _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no ;; esac fi ]) case $host_os in # For platforms that do not support PIC, -DPIC is meaningless: *djgpp*) _LT_TAGVAR(lt_prog_compiler_pic, $1)= ;; *) _LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])" ;; esac AC_CACHE_CHECK([for $compiler option to produce PIC], [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)], [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_prog_compiler_pic, $1)]) _LT_TAGVAR(lt_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_cv_prog_compiler_pic, $1) # # Check to make sure the PIC flag actually works. # if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; 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Moving up from 0x10000000 also allows more sbrk(2) space. _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='$SED "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' ;; gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu) tmp_diet=no if test linux-dietlibc = "$host_os"; then case $cc_basename in diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn) esac fi if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \ && test no = "$tmp_diet" then tmp_addflag=' $pic_flag' tmp_sharedflag='-shared' case $cc_basename,$host_cpu in pgcc*) # Portland Group C compiler _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' tmp_addflag=' $pic_flag' ;; pgf77* | pgf90* | pgf95* | pgfortran*) # Portland Group f77 and f90 compilers _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' tmp_addflag=' $pic_flag -Mnomain' ;; ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64 tmp_addflag=' -i_dynamic' ;; efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64 tmp_addflag=' -i_dynamic -nofor_main' ;; ifc* | ifort*) # Intel Fortran compiler tmp_addflag=' -nofor_main' ;; lf95*) # Lahey Fortran 8.1 _LT_TAGVAR(whole_archive_flag_spec, $1)= tmp_sharedflag='--shared' ;; nagfor*) # NAGFOR 5.3 tmp_sharedflag='-Wl,-shared' ;; xl[[cC]]* | bgxl[[cC]]* | mpixl[[cC]]*) # IBM XL C 8.0 on PPC (deal with xlf below) tmp_sharedflag='-qmkshrobj' tmp_addflag= ;; nvcc*) # Cuda Compiler Driver 2.2 _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' _LT_TAGVAR(compiler_needs_object, $1)=yes ;; esac case `$CC -V 2>&1 | $SED 5q` in *Sun\ C*) # Sun C 5.9 _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' _LT_TAGVAR(compiler_needs_object, $1)=yes tmp_sharedflag='-G' ;; *Sun\ F*) # Sun Fortran 8.3 tmp_sharedflag='-G' ;; esac _LT_TAGVAR(archive_cmds, $1)='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' if test yes = "$supports_anon_versioning"; then _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~ cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~ echo "local: *; };" >> $output_objdir/$libname.ver~ $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-version-script $wl$output_objdir/$libname.ver -o $lib' fi case $cc_basename in tcc*) _LT_TAGVAR(export_dynamic_flag_spec, $1)='-rdynamic' ;; xlf* | bgf* | bgxlf* | mpixlf*) # IBM XL Fortran 10.1 on PPC cannot create shared libs itself _LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive' _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib' if test yes = "$supports_anon_versioning"; then _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~ cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~ echo "local: *; };" >> $output_objdir/$libname.ver~ $LD -shared $libobjs $deplibs $linker_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib' fi ;; esac else _LT_TAGVAR(ld_shlibs, $1)=no fi ;; netbsd*) if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib' wlarc= else _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' fi ;; solaris*) if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then _LT_TAGVAR(ld_shlibs, $1)=no cat <<_LT_EOF 1>&2 *** Warning: The releases 2.8.* of the GNU linker cannot reliably *** create shared libraries on Solaris systems. Therefore, libtool *** is disabling shared libraries support. We urge you to upgrade GNU *** binutils to release 2.9.1 or newer. Another option is to modify *** your PATH or compiler configuration so that the native linker is *** used, and then restart. _LT_EOF elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' else _LT_TAGVAR(ld_shlibs, $1)=no fi ;; sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*) case `$LD -v 2>&1` in *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.1[[0-5]].*) _LT_TAGVAR(ld_shlibs, $1)=no cat <<_LT_EOF 1>&2 *** Warning: Releases of the GNU linker prior to 2.16.91.0.3 cannot *** reliably create shared libraries on SCO systems. Therefore, libtool *** is disabling shared libraries support. We urge you to upgrade GNU *** binutils to release 2.16.91.0.3 or newer. Another option is to modify *** your PATH or compiler configuration so that the native linker is *** used, and then restart. _LT_EOF ;; *) # For security reasons, it is highly recommended that you always # use absolute paths for naming shared libraries, and exclude the # DT_RUNPATH tag from executables and libraries. But doing so # requires that you compile everything twice, which is a pain. if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' else _LT_TAGVAR(ld_shlibs, $1)=no fi ;; esac ;; sunos4*) _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags' wlarc= _LT_TAGVAR(hardcode_direct, $1)=yes _LT_TAGVAR(hardcode_shlibpath_var, $1)=no ;; *) if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' else _LT_TAGVAR(ld_shlibs, $1)=no fi ;; esac if test no = "$_LT_TAGVAR(ld_shlibs, $1)"; then runpath_var= _LT_TAGVAR(hardcode_libdir_flag_spec, $1)= _LT_TAGVAR(export_dynamic_flag_spec, $1)= _LT_TAGVAR(whole_archive_flag_spec, $1)= fi else # PORTME fill in a description of your system's linker (not GNU ld) case $host_os in aix3*) _LT_TAGVAR(allow_undefined_flag, $1)=unsupported _LT_TAGVAR(always_export_symbols, $1)=yes _LT_TAGVAR(archive_expsym_cmds, $1)='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname' # Note: this linker hardcodes the directories in LIBPATH if there # are no directories specified by -L. _LT_TAGVAR(hardcode_minus_L, $1)=yes if test yes = "$GCC" && test -z "$lt_prog_compiler_static"; then # Neither direct hardcoding nor static linking is supported with a # broken collect2. _LT_TAGVAR(hardcode_direct, $1)=unsupported fi ;; aix[[4-9]]*) if test ia64 = "$host_cpu"; then # On IA64, the linker does run time linking by default, so we don't # have to do anything special. aix_use_runtimelinking=no exp_sym_flag='-Bexport' no_entry_flag= else # If we're using GNU nm, then we don't want the "-C" option. # -C means demangle to GNU nm, but means don't demangle to AIX nm. # Without the "-l" option, or with the "-B" option, AIX nm treats # weak defined symbols like other global defined symbols, whereas # GNU nm marks them as "W". # While the 'weak' keyword is ignored in the Export File, we need # it in the Import File for the 'aix-soname' feature, so we have # to replace the "-B" option with "-P" for AIX nm. if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { if (\$ 2 == "W") { print \$ 3 " weak" } else { print \$ 3 } } }'\'' | sort -u > $export_symbols' else _LT_TAGVAR(export_symbols_cmds, $1)='`func_echo_all $NM | $SED -e '\''s/B\([[^B]]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && ([substr](\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols' fi aix_use_runtimelinking=no # Test if we are trying to use run time linking or normal # AIX style linking. If -brtl is somewhere in LDFLAGS, we # have runtime linking enabled, and use it for executables. # For shared libraries, we enable/disable runtime linking # depending on the kind of the shared library created - # when "with_aix_soname,aix_use_runtimelinking" is: # "aix,no" lib.a(lib.so.V) shared, rtl:no, for executables # "aix,yes" lib.so shared, rtl:yes, for executables # lib.a static archive # "both,no" lib.so.V(shr.o) shared, rtl:yes # lib.a(lib.so.V) shared, rtl:no, for executables # "both,yes" lib.so.V(shr.o) shared, rtl:yes, for executables # lib.a(lib.so.V) shared, rtl:no # "svr4,*" lib.so.V(shr.o) shared, rtl:yes, for executables # lib.a static archive case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*) for ld_flag in $LDFLAGS; do if (test x-brtl = "x$ld_flag" || test x-Wl,-brtl = "x$ld_flag"); then aix_use_runtimelinking=yes break fi done if test svr4,no = "$with_aix_soname,$aix_use_runtimelinking"; then # With aix-soname=svr4, we create the lib.so.V shared archives only, # so we don't have lib.a shared libs to link our executables. # We have to force runtime linking in this case. aix_use_runtimelinking=yes LDFLAGS="$LDFLAGS -Wl,-brtl" fi ;; esac exp_sym_flag='-bexport' no_entry_flag='-bnoentry' fi # When large executables or shared objects are built, AIX ld can # have problems creating the table of contents. If linking a library # or program results in "error TOC overflow" add -mminimal-toc to # CXXFLAGS/CFLAGS for g++/gcc. 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The following line is correct: shared_flag='-G' else if test yes = "$aix_use_runtimelinking"; then shared_flag='$wl-G' else shared_flag='$wl-bM:SRE' fi shared_flag_aix='$wl-bM:SRE' shared_flag_svr4='$wl-G' fi fi _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-bexpall' # It seems that -bexpall does not export symbols beginning with # underscore (_), so it is better to generate a list of symbols to export. _LT_TAGVAR(always_export_symbols, $1)=yes if test aix,yes = "$with_aix_soname,$aix_use_runtimelinking"; then # Warning - without using the other runtime loading flags (-brtl), # -berok will link without error, but may produce a broken library. _LT_TAGVAR(allow_undefined_flag, $1)='-berok' # Determine the default libpath from the value encoded in an # empty executable. _LT_SYS_MODULE_PATH_AIX([$1]) _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-blibpath:$libdir:'"$aix_libpath" _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs $wl'$no_entry_flag' $compiler_flags `if test -n "$allow_undefined_flag"; then func_echo_all "$wl$allow_undefined_flag"; else :; fi` $wl'$exp_sym_flag:\$export_symbols' '$shared_flag else if test ia64 = "$host_cpu"; then _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R $libdir:/usr/lib:/lib' _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs" _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\$wl$no_entry_flag"' $compiler_flags $wl$allow_undefined_flag '"\$wl$exp_sym_flag:\$export_symbols" else # Determine the default libpath from the value encoded in an # empty executable. _LT_SYS_MODULE_PATH_AIX([$1]) _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-blibpath:$libdir:'"$aix_libpath" # Warning - without using the other run time loading flags, # -berok will link without error, but may produce a broken library. _LT_TAGVAR(no_undefined_flag, $1)=' $wl-bernotok' _LT_TAGVAR(allow_undefined_flag, $1)=' $wl-berok' if test yes = "$with_gnu_ld"; then # We only use this code for GNU lds that support --whole-archive. _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive$convenience $wl--no-whole-archive' else # Exported symbols can be pulled into shared objects from archives _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience' fi _LT_TAGVAR(archive_cmds_need_lc, $1)=yes _LT_TAGVAR(archive_expsym_cmds, $1)='$RM -r $output_objdir/$realname.d~$MKDIR $output_objdir/$realname.d' # -brtl affects multiple linker settings, -berok does not and is overridden later compiler_flags_filtered='`func_echo_all "$compiler_flags " | $SED -e "s%-brtl\\([[, ]]\\)%-berok\\1%g"`' if test svr4 != "$with_aix_soname"; then # This is similar to how AIX traditionally builds its shared libraries. _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$CC '$shared_flag_aix' -o $output_objdir/$realname.d/$soname $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$realname.d/$soname' fi if test aix != "$with_aix_soname"; then _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$CC '$shared_flag_svr4' -o $output_objdir/$realname.d/$shared_archive_member_spec.o $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$STRIP -e $output_objdir/$realname.d/$shared_archive_member_spec.o~( func_echo_all "#! $soname($shared_archive_member_spec.o)"; if test shr_64 = "$shared_archive_member_spec"; then func_echo_all "# 64"; else func_echo_all "# 32"; fi; cat $export_symbols ) > $output_objdir/$realname.d/$shared_archive_member_spec.imp~$AR $AR_FLAGS $output_objdir/$soname $output_objdir/$realname.d/$shared_archive_member_spec.o $output_objdir/$realname.d/$shared_archive_member_spec.imp' else # used by -dlpreopen to get the symbols _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$MV $output_objdir/$realname.d/$soname $output_objdir' fi _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$RM -r $output_objdir/$realname.d' fi fi ;; amigaos*) case $host_cpu in powerpc) # see comment about AmigaOS4 .so support _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='' ;; m68k) _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)' _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' _LT_TAGVAR(hardcode_minus_L, $1)=yes ;; esac ;; bsdi[[45]]*) _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic ;; cygwin* | mingw* | pw32* | cegcc*) # When not using gcc, we currently assume that we are using # Microsoft Visual C++ or Intel C++ Compiler. # hardcode_libdir_flag_spec is actually meaningless, as there is # no search path for DLLs. case $cc_basename in cl* | icl*) # Native MSVC or ICC _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' ' _LT_TAGVAR(allow_undefined_flag, $1)=unsupported _LT_TAGVAR(always_export_symbols, $1)=yes _LT_TAGVAR(file_list_spec, $1)='@' # Tell ltmain to make .lib files, not .a files. libext=lib # Tell ltmain to make .dll files, not .so files. shrext_cmds=.dll # FIXME: Setting linknames here is a bad hack. _LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~linknames=' _LT_TAGVAR(archive_expsym_cmds, $1)='if _LT_DLL_DEF_P([$export_symbols]); then cp "$export_symbols" "$output_objdir/$soname.def"; echo "$tool_output_objdir$soname.def" > "$output_objdir/$soname.exp"; else $SED -e '\''s/^/-link -EXPORT:/'\'' < $export_symbols > $output_objdir/$soname.exp; fi~ $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~ linknames=' # The linker will not automatically build a static lib if we build a DLL. # _LT_TAGVAR(old_archive_from_new_cmds, $1)='true' _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*' _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1,DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols' # Don't use ranlib _LT_TAGVAR(old_postinstall_cmds, $1)='chmod 644 $oldlib' _LT_TAGVAR(postlink_cmds, $1)='lt_outputfile="@OUTPUT@"~ lt_tool_outputfile="@TOOL_OUTPUT@"~ case $lt_outputfile in *.exe|*.EXE) ;; *) lt_outputfile=$lt_outputfile.exe lt_tool_outputfile=$lt_tool_outputfile.exe ;; esac~ if test : != "$MANIFEST_TOOL" && test -f "$lt_outputfile.manifest"; then $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1; $RM "$lt_outputfile.manifest"; fi' ;; *) # Assume MSVC and ICC wrapper _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' ' _LT_TAGVAR(allow_undefined_flag, $1)=unsupported # Tell ltmain to make .lib files, not .a files. libext=lib # Tell ltmain to make .dll files, not .so files. shrext_cmds=.dll # FIXME: Setting linknames here is a bad hack. _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames=' # The linker will automatically build a .lib file if we build a DLL. _LT_TAGVAR(old_archive_from_new_cmds, $1)='true' # FIXME: Should let the user specify the lib program. _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs' _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes ;; esac ;; darwin* | rhapsody*) _LT_DARWIN_LINKER_FEATURES($1) ;; dgux*) _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' _LT_TAGVAR(hardcode_shlibpath_var, $1)=no ;; # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor # support. 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solaris*) _LT_TAGVAR(no_undefined_flag, $1)=' -z defs' if test yes = "$GCC"; then wlarc='$wl' _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $wl-z ${wl}text $wl-h $wl$soname -o $lib $libobjs $deplibs $compiler_flags' _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ $CC -shared $pic_flag $wl-z ${wl}text $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp' else case `$CC -V 2>&1` in *"Compilers 5.0"*) wlarc='' _LT_TAGVAR(archive_cmds, $1)='$LD -G$allow_undefined_flag -h $soname -o $lib $libobjs $deplibs $linker_flags' _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ $LD -G$allow_undefined_flag -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp' ;; *) wlarc='$wl' _LT_TAGVAR(archive_cmds, $1)='$CC -G$allow_undefined_flag -h $soname -o $lib $libobjs $deplibs $compiler_flags' _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ $CC -G$allow_undefined_flag -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp' ;; esac fi _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir' _LT_TAGVAR(hardcode_shlibpath_var, $1)=no case $host_os in solaris2.[[0-5]] | solaris2.[[0-5]].*) ;; *) # The compiler driver will combine and reorder linker options, # but understands '-z linker_flag'. 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(KAI) C++ Compiler # KCC will only create a shared library if the output file # ends with ".so" (or ".sl" for HP-UX), so rename the library # to its proper name (with version) after linking. _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\$tempext\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\$tempext\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib $wl-retain-symbols-file,$export_symbols; mv \$templib $lib' # Commands to make compiler produce verbose output that lists # what "hidden" libraries, object files and flags are used when # linking a shared library. # # There doesn't appear to be a way to prevent this compiler from # explicitly linking system object files so we need to strip them # from the output so that they don't get included in the library # dependencies. output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; rm -f libconftest$shared_ext; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"' _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic' # Archives containing C++ object files must be created using # "CC -Bstatic", where "CC" is the KAI C++ compiler. _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' ;; icpc* | ecpc* ) # Intel C++ with_gnu_ld=yes # version 8.0 and above of icpc choke on multiply defined symbols # if we add $predep_objects and $postdep_objects, however 7.1 and # earlier do not add the objects themselves. case `$CC -V 2>&1` in *"Version 7."*) _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' ;; *) # Version 8.0 or newer tmp_idyn= case $host_cpu in ia64*) tmp_idyn=' -i_dynamic';; esac _LT_TAGVAR(archive_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' ;; esac _LT_TAGVAR(archive_cmds_need_lc, $1)=no _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic' _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive$convenience $wl--no-whole-archive' ;; pgCC* | pgcpp*) # Portland Group C++ compiler case `$CC -V` in *pgCC\ [[1-5]].* | *pgcpp\ [[1-5]].*) _LT_TAGVAR(prelink_cmds, $1)='tpldir=Template.dir~ rm -rf $tpldir~ $CC --prelink_objects --instantiation_dir $tpldir $objs $libobjs $compile_deplibs~ compile_command="$compile_command `find $tpldir -name \*.o | sort | $NL2SP`"' _LT_TAGVAR(old_archive_cmds, $1)='tpldir=Template.dir~ rm -rf $tpldir~ $CC --prelink_objects --instantiation_dir $tpldir $oldobjs$old_deplibs~ $AR $AR_FLAGS $oldlib$oldobjs$old_deplibs `find $tpldir -name \*.o | sort | $NL2SP`~ $RANLIB $oldlib' _LT_TAGVAR(archive_cmds, $1)='tpldir=Template.dir~ rm -rf $tpldir~ $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~ $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='tpldir=Template.dir~ rm -rf $tpldir~ $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~ $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' ;; *) # Version 6 and above use weak symbols _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' ;; esac _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl--rpath $wl$libdir' _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic' _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' ;; cxx*) # Compaq C++ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib $wl-retain-symbols-file $wl$export_symbols' runpath_var=LD_RUN_PATH _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir' _LT_TAGVAR(hardcode_libdir_separator, $1)=: # Commands to make compiler produce verbose output that lists # what "hidden" libraries, object files and flags are used when # linking a shared library. # # There doesn't appear to be a way to prevent this compiler from # explicitly linking system object files so we need to strip them # from the output so that they don't get included in the library # dependencies. output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld"`; 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Jones dnl Copyright © 2009 Stefano Zacchiroli dnl Copyright © 2000-2005 Olivier Andrieu dnl Copyright © 2000-2005 Jean-Christophe Filliâtre dnl Copyright © 2000-2005 Georges Mariano dnl dnl For documentation, please read the ocaml.m4 man page. 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"$ac_site_file" \ || { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;} as_fn_error $? "failed to load site script $ac_site_file See 'config.log' for more details" "$LINENO" 5; } fi done if test -r "$cache_file"; then # Some versions of bash will fail to source /dev/null (special files # actually), so we avoid doing that. DJGPP emulates it as a regular file. if test /dev/null != "$cache_file" && test -f "$cache_file"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5 printf "%s\n" "$as_me: loading cache $cache_file" >&6;} case $cache_file in [\\/]* | ?:[\\/]* ) . "$cache_file";; *) . "./$cache_file";; esac fi else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5 printf "%s\n" "$as_me: creating cache $cache_file" >&6;} >$cache_file fi as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H" # Test code for whether the C compiler supports C89 (global declarations) ac_c_conftest_c89_globals=' /* Does the compiler advertise C89 conformance? Do not test the value of __STDC__, because some compilers set it to 0 while being otherwise adequately conformant. */ #if !defined __STDC__ # error "Compiler does not advertise C89 conformance" #endif #include #include struct stat; /* Most of the following tests are stolen from RCS 5.7 src/conf.sh. */ struct buf { int x; }; struct buf * (*rcsopen) (struct buf *, struct stat *, int); static char *e (char **p, int i) { return p[i]; } static char *f (char * (*g) (char **, int), char **p, ...) { char *s; va_list v; va_start (v,p); s = g (p, va_arg (v,int)); va_end (v); return s; } /* C89 style stringification. */ #define noexpand_stringify(a) #a const char *stringified = noexpand_stringify(arbitrary+token=sequence); /* C89 style token pasting. Exercises some of the corner cases that e.g. old MSVC gets wrong, but not very hard. */ #define noexpand_concat(a,b) a##b #define expand_concat(a,b) noexpand_concat(a,b) extern int vA; extern int vbee; #define aye A #define bee B int *pvA = &expand_concat(v,aye); int *pvbee = &noexpand_concat(v,bee); /* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has function prototypes and stuff, but not \xHH hex character constants. These do not provoke an error unfortunately, instead are silently treated as an "x". The following induces an error, until -std is added to get proper ANSI mode. Curiously \x00 != x always comes out true, for an array size at least. It is necessary to write \x00 == 0 to get something that is true only with -std. */ int osf4_cc_array ['\''\x00'\'' == 0 ? 1 : -1]; /* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters inside strings and character constants. */ #define FOO(x) '\''x'\'' int xlc6_cc_array[FOO(a) == '\''x'\'' ? 1 : -1]; int test (int i, double x); struct s1 {int (*f) (int a);}; struct s2 {int (*f) (double a);}; int pairnames (int, char **, int *(*)(struct buf *, struct stat *, int), int, int);' # Test code for whether the C compiler supports C89 (body of main). ac_c_conftest_c89_main=' ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]); ' # Test code for whether the C compiler supports C99 (global declarations) ac_c_conftest_c99_globals=' /* Does the compiler advertise C99 conformance? */ #if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L # error "Compiler does not advertise C99 conformance" #endif // See if C++-style comments work. #include extern int puts (const char *); extern int printf (const char *, ...); extern int dprintf (int, const char *, ...); extern void *malloc (size_t); extern void free (void *); // Check varargs macros. These examples are taken from C99 6.10.3.5. // dprintf is used instead of fprintf to avoid needing to declare // FILE and stderr. #define debug(...) dprintf (2, __VA_ARGS__) #define showlist(...) puts (#__VA_ARGS__) #define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__)) static void test_varargs_macros (void) { int x = 1234; int y = 5678; debug ("Flag"); debug ("X = %d\n", x); showlist (The first, second, and third items.); report (x>y, "x is %d but y is %d", x, y); } // Check long long types. #define BIG64 18446744073709551615ull #define BIG32 4294967295ul #define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0) #if !BIG_OK #error "your preprocessor is broken" #endif #if BIG_OK #else #error "your preprocessor is broken" #endif static long long int bignum = -9223372036854775807LL; static unsigned long long int ubignum = BIG64; struct incomplete_array { int datasize; double data[]; }; struct named_init { int number; const wchar_t *name; double average; }; typedef const char *ccp; static inline int test_restrict (ccp restrict text) { // Iterate through items via the restricted pointer. // Also check for declarations in for loops. for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i) continue; return 0; } // Check varargs and va_copy. static bool test_varargs (const char *format, ...) { va_list args; va_start (args, format); va_list args_copy; va_copy (args_copy, args); const char *str = ""; int number = 0; float fnumber = 0; while (*format) { switch (*format++) { case '\''s'\'': // string str = va_arg (args_copy, const char *); break; case '\''d'\'': // int number = va_arg (args_copy, int); break; case '\''f'\'': // float fnumber = va_arg (args_copy, double); break; default: break; } } va_end (args_copy); va_end (args); return *str && number && fnumber; } ' # Test code for whether the C compiler supports C99 (body of main). ac_c_conftest_c99_main=' // Check bool. _Bool success = false; success |= (argc != 0); // Check restrict. if (test_restrict ("String literal") == 0) success = true; char *restrict newvar = "Another string"; // Check varargs. success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234); test_varargs_macros (); // Check flexible array members. struct incomplete_array *ia = malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10)); ia->datasize = 10; for (int i = 0; i < ia->datasize; ++i) ia->data[i] = i * 1.234; // Work around memory leak warnings. free (ia); // Check named initializers. struct named_init ni = { .number = 34, .name = L"Test wide string", .average = 543.34343, }; ni.number = 58; int dynamic_array[ni.number]; dynamic_array[0] = argv[0][0]; dynamic_array[ni.number - 1] = 543; // work around unused variable warnings ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\'' || dynamic_array[ni.number - 1] != 543); ' # Test code for whether the C compiler supports C11 (global declarations) ac_c_conftest_c11_globals=' /* Does the compiler advertise C11 conformance? */ #if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L # error "Compiler does not advertise C11 conformance" #endif // Check _Alignas. char _Alignas (double) aligned_as_double; char _Alignas (0) no_special_alignment; extern char aligned_as_int; char _Alignas (0) _Alignas (int) aligned_as_int; // Check _Alignof. enum { int_alignment = _Alignof (int), int_array_alignment = _Alignof (int[100]), char_alignment = _Alignof (char) }; _Static_assert (0 < -_Alignof (int), "_Alignof is signed"); // Check _Noreturn. int _Noreturn does_not_return (void) { for (;;) continue; } // Check _Static_assert. struct test_static_assert { int x; _Static_assert (sizeof (int) <= sizeof (long int), "_Static_assert does not work in struct"); long int y; }; // Check UTF-8 literals. #define u8 syntax error! char const utf8_literal[] = u8"happens to be ASCII" "another string"; // Check duplicate typedefs. typedef long *long_ptr; typedef long int *long_ptr; typedef long_ptr long_ptr; // Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1. struct anonymous { union { struct { int i; int j; }; struct { int k; long int l; } w; }; int m; } v1; ' # Test code for whether the C compiler supports C11 (body of main). ac_c_conftest_c11_main=' _Static_assert ((offsetof (struct anonymous, i) == offsetof (struct anonymous, w.k)), "Anonymous union alignment botch"); v1.i = 2; v1.w.k = 5; ok |= v1.i != 5; ' # Test code for whether the C compiler supports C11 (complete). ac_c_conftest_c11_program="${ac_c_conftest_c89_globals} ${ac_c_conftest_c99_globals} ${ac_c_conftest_c11_globals} int main (int argc, char **argv) { int ok = 0; ${ac_c_conftest_c89_main} ${ac_c_conftest_c99_main} ${ac_c_conftest_c11_main} return ok; } " # Test code for whether the C compiler supports C99 (complete). ac_c_conftest_c99_program="${ac_c_conftest_c89_globals} ${ac_c_conftest_c99_globals} int main (int argc, char **argv) { int ok = 0; ${ac_c_conftest_c89_main} ${ac_c_conftest_c99_main} return ok; } " # Test code for whether the C compiler supports C89 (complete). ac_c_conftest_c89_program="${ac_c_conftest_c89_globals} int main (int argc, char **argv) { int ok = 0; ${ac_c_conftest_c89_main} return ok; } " as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H" as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H" as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H" as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H" as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H" as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H" as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H" as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H" as_fn_append ac_header_c_list " wchar.h wchar_h HAVE_WCHAR_H" as_fn_append ac_header_c_list " minix/config.h minix_config_h HAVE_MINIX_CONFIG_H" # Test code for whether the C++ compiler supports C++98 (global declarations) ac_cxx_conftest_cxx98_globals=' // Does the compiler advertise C++98 conformance? #if !defined __cplusplus || __cplusplus < 199711L # error "Compiler does not advertise C++98 conformance" #endif // These inclusions are to reject old compilers that // lack the unsuffixed header files. #include #include // and are *not* freestanding headers in C++98. extern void assert (int); namespace std { extern int strcmp (const char *, const char *); } // Namespaces, exceptions, and templates were all added after "C++ 2.0". using std::exception; using std::strcmp; namespace { void test_exception_syntax() { try { throw "test"; } catch (const char *s) { // Extra parentheses suppress a warning when building autoconf itself, // due to lint rules shared with more typical C programs. assert (!(strcmp) (s, "test")); } } template struct test_template { T const val; explicit test_template(T t) : val(t) {} template T add(U u) { return static_cast(u) + val; } }; } // anonymous namespace ' # Test code for whether the C++ compiler supports C++98 (body of main) ac_cxx_conftest_cxx98_main=' assert (argc); assert (! argv[0]); { test_exception_syntax (); test_template tt (2.0); assert (tt.add (4) == 6.0); assert (true && !false); } ' # Test code for whether the C++ compiler supports C++11 (global declarations) ac_cxx_conftest_cxx11_globals=' // Does the compiler advertise C++ 2011 conformance? #if !defined __cplusplus || __cplusplus < 201103L # error "Compiler does not advertise C++11 conformance" #endif namespace cxx11test { constexpr int get_val() { return 20; } struct testinit { int i; double d; }; class delegate { public: delegate(int n) : n(n) {} delegate(): delegate(2354) {} virtual int getval() { return this->n; }; protected: int n; }; class overridden : public delegate { public: overridden(int n): delegate(n) {} virtual int getval() override final { return this->n * 2; } }; class nocopy { public: nocopy(int i): i(i) {} nocopy() = default; nocopy(const nocopy&) = delete; nocopy & operator=(const nocopy&) = delete; private: int i; }; // for testing lambda expressions template Ret eval(Fn f, Ret v) { return f(v); } // for testing variadic templates and trailing return types template auto sum(V first) -> V { return first; } template auto sum(V first, Args... rest) -> V { return first + sum(rest...); } } ' # Test code for whether the C++ compiler supports C++11 (body of main) ac_cxx_conftest_cxx11_main=' { // Test auto and decltype auto a1 = 6538; auto a2 = 48573953.4; auto a3 = "String literal"; int total = 0; for (auto i = a3; *i; ++i) { total += *i; } decltype(a2) a4 = 34895.034; } { // Test constexpr short sa[cxx11test::get_val()] = { 0 }; } { // Test initializer lists cxx11test::testinit il = { 4323, 435234.23544 }; } { // Test range-based for int array[] = {9, 7, 13, 15, 4, 18, 12, 10, 5, 3, 14, 19, 17, 8, 6, 20, 16, 2, 11, 1}; for (auto &x : array) { x += 23; } } { // Test lambda expressions using cxx11test::eval; assert (eval ([](int x) { return x*2; }, 21) == 42); double d = 2.0; assert (eval ([&](double x) { return d += x; }, 3.0) == 5.0); assert (d == 5.0); assert (eval ([=](double x) mutable { return d += x; }, 4.0) == 9.0); assert (d == 5.0); } { // Test use of variadic templates using cxx11test::sum; auto a = sum(1); auto b = sum(1, 2); auto c = sum(1.0, 2.0, 3.0); } { // Test constructor delegation cxx11test::delegate d1; cxx11test::delegate d2(); cxx11test::delegate d3(45); } { // Test override and final cxx11test::overridden o1(55464); } { // Test nullptr char *c = nullptr; } { // Test template brackets test_template<::test_template> v(test_template(12)); } { // Unicode literals char const *utf8 = u8"UTF-8 string \u2500"; char16_t const *utf16 = u"UTF-8 string \u2500"; char32_t const *utf32 = U"UTF-32 string \u2500"; } ' # Test code for whether the C compiler supports C++11 (complete). ac_cxx_conftest_cxx11_program="${ac_cxx_conftest_cxx98_globals} ${ac_cxx_conftest_cxx11_globals} int main (int argc, char **argv) { int ok = 0; ${ac_cxx_conftest_cxx98_main} ${ac_cxx_conftest_cxx11_main} return ok; } " # Test code for whether the C compiler supports C++98 (complete). ac_cxx_conftest_cxx98_program="${ac_cxx_conftest_cxx98_globals} int main (int argc, char **argv) { int ok = 0; ${ac_cxx_conftest_cxx98_main} return ok; } " # Auxiliary files required by this configure script. ac_aux_files="config.guess config.sub ltmain.sh missing install-sh compile" # Locations in which to look for auxiliary files. ac_aux_dir_candidates="${srcdir}${PATH_SEPARATOR}${srcdir}/..${PATH_SEPARATOR}${srcdir}/../.." # Search for a directory containing all of the required auxiliary files, # $ac_aux_files, from the $PATH-style list $ac_aux_dir_candidates. # If we don't find one directory that contains all the files we need, # we report the set of missing files from the *first* directory in # $ac_aux_dir_candidates and give up. ac_missing_aux_files="" ac_first_candidate=: printf "%s\n" "$as_me:${as_lineno-$LINENO}: looking for aux files: $ac_aux_files" >&5 as_save_IFS=$IFS; 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CC="$CC -DFTYPE=ino_t" if ac_fn_c_try_compile "$LINENO" then : else case e in #( e) CC="$CC -D_FILE_OFFSET_BITS=64" if ac_fn_c_try_compile "$LINENO" then : ac_opt='-D_FILE_OFFSET_BITS=64' fi rm -f core conftest.err conftest.$ac_objext conftest.beam ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam fi ac_cv_sys_largefile_opts=$ac_opt ac_opt_found=yes fi rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext test $ac_opt_found = no || break done CC="$ac_save_CC" test $ac_opt_found = yes || ac_cv_sys_largefile_opts="support not detected" ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_largefile_opts" >&5 printf "%s\n" "$ac_cv_sys_largefile_opts" >&6; } ac_have_largefile=yes case $ac_cv_sys_largefile_opts in #( "none needed") : ;; #( "supported through gnulib") : ;; #( "support not detected") : ac_have_largefile=no ;; #( "-D_FILE_OFFSET_BITS=64") : printf "%s\n" "#define _FILE_OFFSET_BITS 64" >>confdefs.h ;; #( "-D_LARGE_FILES=1") : printf "%s\n" "#define _LARGE_FILES 1" >>confdefs.h ;; #( "-n32") : CC="$CC -n32" ;; #( *) : as_fn_error $? "internal error: bad value for \$ac_cv_sys_largefile_opts" "$LINENO" 5 ;; esac if test "$enable_year2038" != no then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option for timestamps after 2038" >&5 printf %s "checking for $CC option for timestamps after 2038... 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" >&6; } if test ${ac_cv_path_EGREP+y} then : printf %s "(cached) " >&6 else case e in #( e) if echo a | $GREP -E '(a|b)' >/dev/null 2>&1 then ac_cv_path_EGREP="$GREP -E" else if test -z "$EGREP"; then ac_path_EGREP_found=false # Loop through the user's path and test for each of PROGNAME-LIST as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_prog in egrep do for ac_exec_ext in '' $ac_executable_extensions; do ac_path_EGREP="$as_dir$ac_prog$ac_exec_ext" as_fn_executable_p "$ac_path_EGREP" || continue # Check for GNU ac_path_EGREP and select it if it is found. # Check for GNU $ac_path_EGREP case `"$ac_path_EGREP" --version 2>&1` in #( *GNU*) ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;; #( *) ac_count=0 printf %s 0123456789 >"conftest.in" while : do cat "conftest.in" "conftest.in" >"conftest.tmp" mv "conftest.tmp" "conftest.in" cp "conftest.in" "conftest.nl" printf "%s\n" 'EGREP' >> "conftest.nl" "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break as_fn_arith $ac_count + 1 && ac_count=$as_val if test $ac_count -gt ${ac_path_EGREP_max-0}; then # Best one so far, save it but keep looking for a better one ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_max=$ac_count fi # 10*(2^10) chars as input seems more than enough test $ac_count -gt 10 && break done rm -f conftest.in conftest.tmp conftest.nl conftest.out;; esac $ac_path_EGREP_found && break 3 done done done IFS=$as_save_IFS if test -z "$ac_cv_path_EGREP"; then as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 fi else ac_cv_path_EGREP=$EGREP fi fi ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5 printf "%s\n" "$ac_cv_path_EGREP" >&6; } EGREP="$ac_cv_path_EGREP" EGREP_TRADITIONAL=$EGREP ac_cv_path_EGREP_TRADITIONAL=$EGREP { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fgrep" >&5 printf %s "checking for fgrep... " >&6; } if test ${ac_cv_path_FGREP+y} then : printf %s "(cached) " >&6 else case e in #( e) if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1 then ac_cv_path_FGREP="$GREP -F" else if test -z "$FGREP"; then ac_path_FGREP_found=false # Loop through the user's path and test for each of PROGNAME-LIST as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_prog in fgrep do for ac_exec_ext in '' $ac_executable_extensions; do ac_path_FGREP="$as_dir$ac_prog$ac_exec_ext" as_fn_executable_p "$ac_path_FGREP" || continue # Check for GNU ac_path_FGREP and select it if it is found. # Check for GNU $ac_path_FGREP case `"$ac_path_FGREP" --version 2>&1` in #( *GNU*) ac_cv_path_FGREP="$ac_path_FGREP" ac_path_FGREP_found=:;; #( *) ac_count=0 printf %s 0123456789 >"conftest.in" while : do cat "conftest.in" "conftest.in" >"conftest.tmp" mv "conftest.tmp" "conftest.in" cp "conftest.in" "conftest.nl" printf "%s\n" 'FGREP' >> "conftest.nl" "$ac_path_FGREP" FGREP < "conftest.nl" >"conftest.out" 2>/dev/null || break diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break as_fn_arith $ac_count + 1 && ac_count=$as_val if test $ac_count -gt ${ac_path_FGREP_max-0}; then # Best one so far, save it but keep looking for a better one ac_cv_path_FGREP="$ac_path_FGREP" ac_path_FGREP_max=$ac_count fi # 10*(2^10) chars as input seems more than enough test $ac_count -gt 10 && break done rm -f conftest.in conftest.tmp conftest.nl conftest.out;; esac $ac_path_FGREP_found && break 3 done done done IFS=$as_save_IFS if test -z "$ac_cv_path_FGREP"; then as_fn_error $? "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 fi else ac_cv_path_FGREP=$FGREP fi fi ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_FGREP" >&5 printf "%s\n" "$ac_cv_path_FGREP" >&6; } FGREP="$ac_cv_path_FGREP" test -z "$GREP" && GREP=grep # Check whether --with-gnu-ld was given. if test ${with_gnu_ld+y} then : withval=$with_gnu_ld; test no = "$withval" || with_gnu_ld=yes else case e in #( e) with_gnu_ld=no ;; esac fi ac_prog=ld if test yes = "$GCC"; then # Check if gcc -print-prog-name=ld gives a path. { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ld used by $CC" >&5 printf %s "checking for ld used by $CC... " >&6; } case $host in *-*-mingw*) # gcc leaves a trailing carriage return, which upsets mingw ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; *) ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; esac case $ac_prog in # Accept absolute paths. [\\/]* | ?:[\\/]*) re_direlt='/[^/][^/]*/\.\./' # Canonicalize the pathname of ld ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'` while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"` done test -z "$LD" && LD=$ac_prog ;; "") # If it fails, then pretend we aren't using GCC. ac_prog=ld ;; *) # If it is relative, then search for the first ld in PATH. with_gnu_ld=unknown ;; esac elif test yes = "$with_gnu_ld"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5 printf %s "checking for GNU ld... " >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5 printf %s "checking for non-GNU ld... " >&6; } fi if test ${lt_cv_path_LD+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -z "$LD"; then lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR for ac_dir in $PATH; do IFS=$lt_save_ifs test -z "$ac_dir" && ac_dir=. if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then lt_cv_path_LD=$ac_dir/$ac_prog # Check to see if the program is GNU ld. I'd rather use --version, # but apparently some variants of GNU ld only accept -v. # Break only if it was the GNU/non-GNU ld that we prefer. case `"$lt_cv_path_LD" -v 2>&1 &5 printf "%s\n" "$LD" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi test -z "$LD" && as_fn_error $? "no acceptable ld found in \$PATH" "$LINENO" 5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5 printf %s "checking if the linker ($LD) is GNU ld... " >&6; } if test ${lt_cv_prog_gnu_ld+y} then : printf %s "(cached) " >&6 else case e in #( e) # I'd rather use --version here, but apparently some GNU lds only accept -v. case `$LD -v 2>&1 &5 printf "%s\n" "$lt_cv_prog_gnu_ld" >&6; } with_gnu_ld=$lt_cv_prog_gnu_ld { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for BSD- or MS-compatible name lister (nm)" >&5 printf %s "checking for BSD- or MS-compatible name lister (nm)... " >&6; } if test ${lt_cv_path_NM+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$NM"; then # Let the user override the test. lt_cv_path_NM=$NM else lt_nm_to_check=${ac_tool_prefix}nm if test -n "$ac_tool_prefix" && test "$build" = "$host"; then lt_nm_to_check="$lt_nm_to_check nm" fi for lt_tmp_nm in $lt_nm_to_check; do lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do IFS=$lt_save_ifs test -z "$ac_dir" && ac_dir=. tmp_nm=$ac_dir/$lt_tmp_nm if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext"; then # Check to see if the nm accepts a BSD-compat flag. # Adding the 'sed 1q' prevents false positives on HP-UX, which says: # nm: unknown option "B" ignored # Tru64's nm complains that /dev/null is an invalid object file # MSYS converts /dev/null to NUL, MinGW nm treats NUL as empty case $build_os in mingw*) lt_bad_file=conftest.nm/nofile ;; *) lt_bad_file=/dev/null ;; esac case `"$tmp_nm" -B $lt_bad_file 2>&1 | $SED '1q'` in *$lt_bad_file* | *'Invalid file or object type'*) lt_cv_path_NM="$tmp_nm -B" break 2 ;; *) case `"$tmp_nm" -p /dev/null 2>&1 | $SED '1q'` in */dev/null*) lt_cv_path_NM="$tmp_nm -p" break 2 ;; *) lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but continue # so that we can try to find one that supports BSD flags ;; esac ;; esac fi done IFS=$lt_save_ifs done : ${lt_cv_path_NM=no} fi ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_NM" >&5 printf "%s\n" "$lt_cv_path_NM" >&6; } if test no != "$lt_cv_path_NM"; then NM=$lt_cv_path_NM else # Didn't find any BSD compatible name lister, look for dumpbin. if test -n "$DUMPBIN"; then : # Let the user override the test. else if test -n "$ac_tool_prefix"; then for ac_prog in dumpbin "link -dump" do # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. set dummy $ac_tool_prefix$ac_prog; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_DUMPBIN+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$DUMPBIN"; then ac_cv_prog_DUMPBIN="$DUMPBIN" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_DUMPBIN="$ac_tool_prefix$ac_prog" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi DUMPBIN=$ac_cv_prog_DUMPBIN if test -n "$DUMPBIN"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $DUMPBIN" >&5 printf "%s\n" "$DUMPBIN" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi test -n "$DUMPBIN" && break done fi if test -z "$DUMPBIN"; then ac_ct_DUMPBIN=$DUMPBIN for ac_prog in dumpbin "link -dump" do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_DUMPBIN+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_DUMPBIN"; then ac_cv_prog_ac_ct_DUMPBIN="$ac_ct_DUMPBIN" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_DUMPBIN="$ac_prog" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_DUMPBIN=$ac_cv_prog_ac_ct_DUMPBIN if test -n "$ac_ct_DUMPBIN"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DUMPBIN" >&5 printf "%s\n" "$ac_ct_DUMPBIN" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi test -n "$ac_ct_DUMPBIN" && break done if test "x$ac_ct_DUMPBIN" = x; then DUMPBIN=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac DUMPBIN=$ac_ct_DUMPBIN fi fi case `$DUMPBIN -symbols -headers /dev/null 2>&1 | $SED '1q'` in *COFF*) DUMPBIN="$DUMPBIN -symbols -headers" ;; *) DUMPBIN=: ;; esac fi if test : != "$DUMPBIN"; then NM=$DUMPBIN fi fi test -z "$NM" && NM=nm { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5 printf %s "checking the name lister ($NM) interface... " >&6; } if test ${lt_cv_nm_interface+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_nm_interface="BSD nm" echo "int some_variable = 0;" > conftest.$ac_ext (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&5) (eval "$ac_compile" 2>conftest.err) cat conftest.err >&5 (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&5) (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out) cat conftest.err >&5 (eval echo "\"\$as_me:$LINENO: output\"" >&5) cat conftest.out >&5 if $GREP 'External.*some_variable' conftest.out > /dev/null; then lt_cv_nm_interface="MS dumpbin" fi rm -f conftest* ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5 printf "%s\n" "$lt_cv_nm_interface" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5 printf %s "checking whether ln -s works... " >&6; } LN_S=$as_ln_s if test "$LN_S" = "ln -s"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no, using $LN_S" >&5 printf "%s\n" "no, using $LN_S" >&6; } fi # find the maximum length of command line arguments { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5 printf %s "checking the maximum length of command line arguments... " >&6; } if test ${lt_cv_sys_max_cmd_len+y} then : printf %s "(cached) " >&6 else case e in #( e) i=0 teststring=ABCD case $build_os in msdosdjgpp*) # On DJGPP, this test can blow up pretty badly due to problems in libc # (any single argument exceeding 2000 bytes causes a buffer overrun # during glob expansion). Even if it were fixed, the result of this # check would be larger than it should be. lt_cv_sys_max_cmd_len=12288; # 12K is about right ;; gnu*) # Under GNU Hurd, this test is not required because there is # no limit to the length of command line arguments. # Libtool will interpret -1 as no limit whatsoever lt_cv_sys_max_cmd_len=-1; ;; cygwin* | mingw* | cegcc*) # On Win9x/ME, this test blows up -- it succeeds, but takes # about 5 minutes as the teststring grows exponentially. # Worse, since 9x/ME are not pre-emptively multitasking, # you end up with a "frozen" computer, even though with patience # the test eventually succeeds (with a max line length of 256k). # Instead, let's just punt: use the minimum linelength reported by # all of the supported platforms: 8192 (on NT/2K/XP). lt_cv_sys_max_cmd_len=8192; ;; mint*) # On MiNT this can take a long time and run out of memory. lt_cv_sys_max_cmd_len=8192; ;; amigaos*) # On AmigaOS with pdksh, this test takes hours, literally. # So we just punt and use a minimum line length of 8192. lt_cv_sys_max_cmd_len=8192; ;; bitrig* | darwin* | dragonfly* | freebsd* | midnightbsd* | netbsd* | openbsd*) # This has been around since 386BSD, at least. Likely further. if test -x /sbin/sysctl; then lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax` elif test -x /usr/sbin/sysctl; then lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax` else lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs fi # And add a safety zone lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` ;; interix*) # We know the value 262144 and hardcode it with a safety zone (like BSD) lt_cv_sys_max_cmd_len=196608 ;; os2*) # The test takes a long time on OS/2. lt_cv_sys_max_cmd_len=8192 ;; osf*) # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not # nice to cause kernel panics so lets avoid the loop below. # First set a reasonable default. lt_cv_sys_max_cmd_len=16384 # if test -x /sbin/sysconfig; then case `/sbin/sysconfig -q proc exec_disable_arg_limit` in *1*) lt_cv_sys_max_cmd_len=-1 ;; esac fi ;; sco3.2v5*) lt_cv_sys_max_cmd_len=102400 ;; sysv5* | sco5v6* | sysv4.2uw2*) kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null` if test -n "$kargmax"; then lt_cv_sys_max_cmd_len=`echo $kargmax | $SED 's/.*[ ]//'` else lt_cv_sys_max_cmd_len=32768 fi ;; *) lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null` if test -n "$lt_cv_sys_max_cmd_len" && \ test undefined != "$lt_cv_sys_max_cmd_len"; then lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` else # Make teststring a little bigger before we do anything with it. # a 1K string should be a reasonable start. for i in 1 2 3 4 5 6 7 8; do teststring=$teststring$teststring done SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}} # If test is not a shell built-in, we'll probably end up computing a # maximum length that is only half of the actual maximum length, but # we can't tell. while { test X`env echo "$teststring$teststring" 2>/dev/null` \ = "X$teststring$teststring"; } >/dev/null 2>&1 && test 17 != "$i" # 1/2 MB should be enough do i=`expr $i + 1` teststring=$teststring$teststring done # Only check the string length outside the loop. lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1` teststring= # Add a significant safety factor because C++ compilers can tack on # massive amounts of additional arguments before passing them to the # linker. It appears as though 1/2 is a usable value. lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2` fi ;; esac ;; esac fi if test -n "$lt_cv_sys_max_cmd_len"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_max_cmd_len" >&5 printf "%s\n" "$lt_cv_sys_max_cmd_len" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none" >&5 printf "%s\n" "none" >&6; } fi max_cmd_len=$lt_cv_sys_max_cmd_len : ${CP="cp -f"} : ${MV="mv -f"} : ${RM="rm -f"} if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then lt_unset=unset else lt_unset=false fi # test EBCDIC or ASCII case `echo X|tr X '\101'` in A) # ASCII based system # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr lt_SP2NL='tr \040 \012' lt_NL2SP='tr \015\012 \040\040' ;; *) # EBCDIC based system lt_SP2NL='tr \100 \n' lt_NL2SP='tr \r\n \100\100' ;; esac { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to $host format" >&5 printf %s "checking how to convert $build file names to $host format... " >&6; } if test ${lt_cv_to_host_file_cmd+y} then : printf %s "(cached) " >&6 else case e in #( e) case $host in *-*-mingw* ) case $build in *-*-mingw* ) # actually msys lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32 ;; *-*-cygwin* ) lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32 ;; * ) # otherwise, assume *nix lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32 ;; esac ;; *-*-cygwin* ) case $build in *-*-mingw* ) # actually msys lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin ;; *-*-cygwin* ) lt_cv_to_host_file_cmd=func_convert_file_noop ;; * ) # otherwise, assume *nix lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin ;; esac ;; * ) # unhandled hosts (and "normal" native builds) lt_cv_to_host_file_cmd=func_convert_file_noop ;; esac ;; esac fi to_host_file_cmd=$lt_cv_to_host_file_cmd { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_host_file_cmd" >&5 printf "%s\n" "$lt_cv_to_host_file_cmd" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to toolchain format" >&5 printf %s "checking how to convert $build file names to toolchain format... " >&6; } if test ${lt_cv_to_tool_file_cmd+y} then : printf %s "(cached) " >&6 else case e in #( e) #assume ordinary cross tools, or native build. lt_cv_to_tool_file_cmd=func_convert_file_noop case $host in *-*-mingw* ) case $build in *-*-mingw* ) # actually msys lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32 ;; esac ;; esac ;; esac fi to_tool_file_cmd=$lt_cv_to_tool_file_cmd { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_tool_file_cmd" >&5 printf "%s\n" "$lt_cv_to_tool_file_cmd" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5 printf %s "checking for $LD option to reload object files... " >&6; } if test ${lt_cv_ld_reload_flag+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_ld_reload_flag='-r' ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_reload_flag" >&5 printf "%s\n" "$lt_cv_ld_reload_flag" >&6; } reload_flag=$lt_cv_ld_reload_flag case $reload_flag in "" | " "*) ;; *) reload_flag=" $reload_flag" ;; esac reload_cmds='$LD$reload_flag -o $output$reload_objs' case $host_os in cygwin* | mingw* | pw32* | cegcc*) if test yes != "$GCC"; then reload_cmds=false fi ;; darwin*) if test yes = "$GCC"; then reload_cmds='$LTCC $LTCFLAGS -nostdlib $wl-r -o $output$reload_objs' else reload_cmds='$LD$reload_flag -o $output$reload_objs' fi ;; esac if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}file", so it can be a program name with args. set dummy ${ac_tool_prefix}file; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_FILECMD+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$FILECMD"; then ac_cv_prog_FILECMD="$FILECMD" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_FILECMD="${ac_tool_prefix}file" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi FILECMD=$ac_cv_prog_FILECMD if test -n "$FILECMD"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $FILECMD" >&5 printf "%s\n" "$FILECMD" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_FILECMD"; then ac_ct_FILECMD=$FILECMD # Extract the first word of "file", so it can be a program name with args. set dummy file; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_FILECMD+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_FILECMD"; then ac_cv_prog_ac_ct_FILECMD="$ac_ct_FILECMD" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_FILECMD="file" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_FILECMD=$ac_cv_prog_ac_ct_FILECMD if test -n "$ac_ct_FILECMD"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_FILECMD" >&5 printf "%s\n" "$ac_ct_FILECMD" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_FILECMD" = x; then FILECMD=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac FILECMD=$ac_ct_FILECMD fi else FILECMD="$ac_cv_prog_FILECMD" fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args. set dummy ${ac_tool_prefix}objdump; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OBJDUMP+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OBJDUMP"; then ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OBJDUMP=$ac_cv_prog_OBJDUMP if test -n "$OBJDUMP"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5 printf "%s\n" "$OBJDUMP" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OBJDUMP"; then ac_ct_OBJDUMP=$OBJDUMP # Extract the first word of "objdump", so it can be a program name with args. set dummy objdump; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OBJDUMP+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OBJDUMP"; then ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OBJDUMP="objdump" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP if test -n "$ac_ct_OBJDUMP"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5 printf "%s\n" "$ac_ct_OBJDUMP" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OBJDUMP" = x; then OBJDUMP="false" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OBJDUMP=$ac_ct_OBJDUMP fi else OBJDUMP="$ac_cv_prog_OBJDUMP" fi test -z "$OBJDUMP" && OBJDUMP=objdump { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5 printf %s "checking how to recognize dependent libraries... " >&6; } if test ${lt_cv_deplibs_check_method+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_file_magic_cmd='$MAGIC_CMD' lt_cv_file_magic_test_file= lt_cv_deplibs_check_method='unknown' # Need to set the preceding variable on all platforms that support # interlibrary dependencies. # 'none' -- dependencies not supported. # 'unknown' -- same as none, but documents that we really don't know. # 'pass_all' -- all dependencies passed with no checks. # 'test_compile' -- check by making test program. # 'file_magic [[regex]]' -- check by looking for files in library path # that responds to the $file_magic_cmd with a given extended regex. # If you have 'file' or equivalent on your system and you're not sure # whether 'pass_all' will *always* work, you probably want this one. case $host_os in aix[4-9]*) lt_cv_deplibs_check_method=pass_all ;; beos*) lt_cv_deplibs_check_method=pass_all ;; bsdi[45]*) lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)' lt_cv_file_magic_cmd='$FILECMD -L' lt_cv_file_magic_test_file=/shlib/libc.so ;; cygwin*) # func_win32_libid is a shell function defined in ltmain.sh lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL' lt_cv_file_magic_cmd='func_win32_libid' ;; mingw* | pw32*) # Base MSYS/MinGW do not provide the 'file' command needed by # func_win32_libid shell function, so use a weaker test based on 'objdump', # unless we find 'file', for example because we are cross-compiling. if ( file / ) >/dev/null 2>&1; then lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL' lt_cv_file_magic_cmd='func_win32_libid' else # Keep this pattern in sync with the one in func_win32_libid. lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' lt_cv_file_magic_cmd='$OBJDUMP -f' fi ;; cegcc*) # use the weaker test based on 'objdump'. See mingw*. lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?' lt_cv_file_magic_cmd='$OBJDUMP -f' ;; darwin* | rhapsody*) lt_cv_deplibs_check_method=pass_all ;; freebsd* | dragonfly* | midnightbsd*) if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then case $host_cpu in i*86 ) # Not sure whether the presence of OpenBSD here was a mistake. # Let's accept both of them until this is cleared up. lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library' lt_cv_file_magic_cmd=$FILECMD lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*` ;; esac else lt_cv_deplibs_check_method=pass_all fi ;; haiku*) lt_cv_deplibs_check_method=pass_all ;; hpux10.20* | hpux11*) lt_cv_file_magic_cmd=$FILECMD case $host_cpu in ia64*) lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64' lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so ;; hppa*64*) lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]' lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl ;; *) lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|PA-RISC[0-9]\.[0-9]) shared library' lt_cv_file_magic_test_file=/usr/lib/libc.sl ;; esac ;; interix[3-9]*) # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|\.a)$' ;; irix5* | irix6* | nonstopux*) case $LD in *-32|*"-32 ") libmagic=32-bit;; *-n32|*"-n32 ") libmagic=N32;; *-64|*"-64 ") libmagic=64-bit;; *) libmagic=never-match;; esac lt_cv_deplibs_check_method=pass_all ;; # This must be glibc/ELF. linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) lt_cv_deplibs_check_method=pass_all ;; netbsd*) if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$' else lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|_pic\.a)$' fi ;; newos6*) lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)' lt_cv_file_magic_cmd=$FILECMD lt_cv_file_magic_test_file=/usr/lib/libnls.so ;; *nto* | *qnx*) lt_cv_deplibs_check_method=pass_all ;; openbsd* | bitrig*) if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|\.so|_pic\.a)$' else lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$' fi ;; osf3* | osf4* | osf5*) lt_cv_deplibs_check_method=pass_all ;; rdos*) lt_cv_deplibs_check_method=pass_all ;; solaris*) lt_cv_deplibs_check_method=pass_all ;; sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) lt_cv_deplibs_check_method=pass_all ;; sysv4 | sysv4.3*) case $host_vendor in motorola) lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]' lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*` ;; ncr) lt_cv_deplibs_check_method=pass_all ;; sequent) lt_cv_file_magic_cmd='/bin/file' lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )' ;; sni) lt_cv_file_magic_cmd='/bin/file' lt_cv_deplibs_check_method="file_magic ELF [0-9][0-9]*-bit [LM]SB dynamic lib" lt_cv_file_magic_test_file=/lib/libc.so ;; siemens) lt_cv_deplibs_check_method=pass_all ;; pc) lt_cv_deplibs_check_method=pass_all ;; esac ;; tpf*) lt_cv_deplibs_check_method=pass_all ;; os2*) lt_cv_deplibs_check_method=pass_all ;; esac ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5 printf "%s\n" "$lt_cv_deplibs_check_method" >&6; } file_magic_glob= want_nocaseglob=no if test "$build" = "$host"; then case $host_os in mingw* | pw32*) if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then want_nocaseglob=yes else file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[\1]\/[\1]\/g;/g"` fi ;; esac fi file_magic_cmd=$lt_cv_file_magic_cmd deplibs_check_method=$lt_cv_deplibs_check_method test -z "$deplibs_check_method" && deplibs_check_method=unknown if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args. set dummy ${ac_tool_prefix}dlltool; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_DLLTOOL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$DLLTOOL"; then ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi DLLTOOL=$ac_cv_prog_DLLTOOL if test -n "$DLLTOOL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $DLLTOOL" >&5 printf "%s\n" "$DLLTOOL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_DLLTOOL"; then ac_ct_DLLTOOL=$DLLTOOL # Extract the first word of "dlltool", so it can be a program name with args. set dummy dlltool; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_DLLTOOL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_DLLTOOL"; then ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_DLLTOOL="dlltool" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL if test -n "$ac_ct_DLLTOOL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5 printf "%s\n" "$ac_ct_DLLTOOL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_DLLTOOL" = x; then DLLTOOL="false" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac DLLTOOL=$ac_ct_DLLTOOL fi else DLLTOOL="$ac_cv_prog_DLLTOOL" fi test -z "$DLLTOOL" && DLLTOOL=dlltool { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to associate runtime and link libraries" >&5 printf %s "checking how to associate runtime and link libraries... " >&6; } if test ${lt_cv_sharedlib_from_linklib_cmd+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_sharedlib_from_linklib_cmd='unknown' case $host_os in cygwin* | mingw* | pw32* | cegcc*) # two different shell functions defined in ltmain.sh; # decide which one to use based on capabilities of $DLLTOOL case `$DLLTOOL --help 2>&1` in *--identify-strict*) lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib ;; *) lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback ;; esac ;; *) # fallback: assume linklib IS sharedlib lt_cv_sharedlib_from_linklib_cmd=$ECHO ;; esac ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sharedlib_from_linklib_cmd" >&5 printf "%s\n" "$lt_cv_sharedlib_from_linklib_cmd" >&6; } sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO if test -n "$ac_tool_prefix"; then for ac_prog in ar do # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. set dummy $ac_tool_prefix$ac_prog; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_AR+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$AR"; then ac_cv_prog_AR="$AR" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_AR="$ac_tool_prefix$ac_prog" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi AR=$ac_cv_prog_AR if test -n "$AR"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AR" >&5 printf "%s\n" "$AR" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi test -n "$AR" && break done fi if test -z "$AR"; then ac_ct_AR=$AR for ac_prog in ar do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_AR+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_AR"; then ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_AR="$ac_prog" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_AR=$ac_cv_prog_ac_ct_AR if test -n "$ac_ct_AR"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5 printf "%s\n" "$ac_ct_AR" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi test -n "$ac_ct_AR" && break done if test "x$ac_ct_AR" = x; then AR="false" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac AR=$ac_ct_AR fi fi : ${AR=ar} # Use ARFLAGS variable as AR's operation code to sync the variable naming with # Automake. If both AR_FLAGS and ARFLAGS are specified, AR_FLAGS should have # higher priority because thats what people were doing historically (setting # ARFLAGS for automake and AR_FLAGS for libtool). FIXME: Make the AR_FLAGS # variable obsoleted/removed. test ${AR_FLAGS+y} || AR_FLAGS=${ARFLAGS-cr} lt_ar_flags=$AR_FLAGS # Make AR_FLAGS overridable by 'make ARFLAGS='. Don't try to run-time override # by AR_FLAGS because that was never working and AR_FLAGS is about to die. { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for archiver @FILE support" >&5 printf %s "checking for archiver @FILE support... " >&6; } if test ${lt_cv_ar_at_file+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_ar_at_file=no cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO" then : echo conftest.$ac_objext > conftest.lst lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&5' { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5 (eval $lt_ar_try) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } if test 0 -eq "$ac_status"; then # Ensure the archiver fails upon bogus file names. rm -f conftest.$ac_objext libconftest.a { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5 (eval $lt_ar_try) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } if test 0 -ne "$ac_status"; then lt_cv_ar_at_file=@ fi fi rm -f conftest.* libconftest.a fi rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ar_at_file" >&5 printf "%s\n" "$lt_cv_ar_at_file" >&6; } if test no = "$lt_cv_ar_at_file"; then archiver_list_spec= else archiver_list_spec=$lt_cv_ar_at_file fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args. set dummy ${ac_tool_prefix}strip; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_STRIP+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$STRIP"; then ac_cv_prog_STRIP="$STRIP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_STRIP="${ac_tool_prefix}strip" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi STRIP=$ac_cv_prog_STRIP if test -n "$STRIP"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5 printf "%s\n" "$STRIP" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_STRIP"; then ac_ct_STRIP=$STRIP # Extract the first word of "strip", so it can be a program name with args. set dummy strip; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_STRIP+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_STRIP"; then ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_STRIP="strip" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP if test -n "$ac_ct_STRIP"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5 printf "%s\n" "$ac_ct_STRIP" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_STRIP" = x; then STRIP=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac STRIP=$ac_ct_STRIP fi else STRIP="$ac_cv_prog_STRIP" fi test -z "$STRIP" && STRIP=: if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args. set dummy ${ac_tool_prefix}ranlib; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_RANLIB+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$RANLIB"; then ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi RANLIB=$ac_cv_prog_RANLIB if test -n "$RANLIB"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5 printf "%s\n" "$RANLIB" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_RANLIB"; then ac_ct_RANLIB=$RANLIB # Extract the first word of "ranlib", so it can be a program name with args. set dummy ranlib; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_RANLIB+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_RANLIB"; then ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_RANLIB="ranlib" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB if test -n "$ac_ct_RANLIB"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5 printf "%s\n" "$ac_ct_RANLIB" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_RANLIB" = x; then RANLIB=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac RANLIB=$ac_ct_RANLIB fi else RANLIB="$ac_cv_prog_RANLIB" fi test -z "$RANLIB" && RANLIB=: # Determine commands to create old-style static archives. old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs' old_postinstall_cmds='chmod 644 $oldlib' old_postuninstall_cmds= if test -n "$RANLIB"; then case $host_os in bitrig* | openbsd*) old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib" ;; *) old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib" ;; esac old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib" fi case $host_os in darwin*) lock_old_archive_extraction=yes ;; *) lock_old_archive_extraction=no ;; esac # If no C compiler was specified, use CC. LTCC=${LTCC-"$CC"} # If no C compiler flags were specified, use CFLAGS. LTCFLAGS=${LTCFLAGS-"$CFLAGS"} # Allow CC to be a program name with arguments. compiler=$CC # Check for command to grab the raw symbol name followed by C symbol from nm. { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5 printf %s "checking command to parse $NM output from $compiler object... " >&6; } if test ${lt_cv_sys_global_symbol_pipe+y} then : printf %s "(cached) " >&6 else case e in #( e) # These are sane defaults that work on at least a few old systems. # [They come from Ultrix. What could be older than Ultrix?!! ;)] # Character class describing NM global symbol codes. symcode='[BCDEGRST]' # Regexp to match symbols that can be accessed directly from C. sympat='\([_A-Za-z][_A-Za-z0-9]*\)' # Define system-specific variables. case $host_os in aix*) symcode='[BCDT]' ;; cygwin* | mingw* | pw32* | cegcc*) symcode='[ABCDGISTW]' ;; hpux*) if test ia64 = "$host_cpu"; then symcode='[ABCDEGRST]' fi ;; irix* | nonstopux*) symcode='[BCDEGRST]' ;; osf*) symcode='[BCDEGQRST]' ;; solaris*) symcode='[BDRT]' ;; sco3.2v5*) symcode='[DT]' ;; sysv4.2uw2*) symcode='[DT]' ;; sysv5* | sco5v6* | unixware* | OpenUNIX*) symcode='[ABDT]' ;; sysv4) symcode='[DFNSTU]' ;; esac # If we're using GNU nm, then use its standard symbol codes. case `$NM -V 2>&1` in *GNU* | *'with BFD'*) symcode='[ABCDGIRSTW]' ;; esac if test "$lt_cv_nm_interface" = "MS dumpbin"; then # Gets list of data symbols to import. lt_cv_sys_global_symbol_to_import="$SED -n -e 's/^I .* \(.*\)$/\1/p'" # Adjust the below global symbol transforms to fixup imported variables. lt_cdecl_hook=" -e 's/^I .* \(.*\)$/extern __declspec(dllimport) char \1;/p'" lt_c_name_hook=" -e 's/^I .* \(.*\)$/ {\"\1\", (void *) 0},/p'" lt_c_name_lib_hook="\ -e 's/^I .* \(lib.*\)$/ {\"\1\", (void *) 0},/p'\ -e 's/^I .* \(.*\)$/ {\"lib\1\", (void *) 0},/p'" else # Disable hooks by default. lt_cv_sys_global_symbol_to_import= lt_cdecl_hook= lt_c_name_hook= lt_c_name_lib_hook= fi # Transform an extracted symbol line into a proper C declaration. # Some systems (esp. on ia64) link data and code symbols differently, # so use this general approach. lt_cv_sys_global_symbol_to_cdecl="$SED -n"\ $lt_cdecl_hook\ " -e 's/^T .* \(.*\)$/extern int \1();/p'"\ " -e 's/^$symcode$symcode* .* \(.*\)$/extern char \1;/p'" # Transform an extracted symbol line into symbol name and symbol address lt_cv_sys_global_symbol_to_c_name_address="$SED -n"\ $lt_c_name_hook\ " -e 's/^: \(.*\) .*$/ {\"\1\", (void *) 0},/p'"\ " -e 's/^$symcode$symcode* .* \(.*\)$/ {\"\1\", (void *) \&\1},/p'" # Transform an extracted symbol line into symbol name with lib prefix and # symbol address. lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="$SED -n"\ $lt_c_name_lib_hook\ " -e 's/^: \(.*\) .*$/ {\"\1\", (void *) 0},/p'"\ " -e 's/^$symcode$symcode* .* \(lib.*\)$/ {\"\1\", (void *) \&\1},/p'"\ " -e 's/^$symcode$symcode* .* \(.*\)$/ {\"lib\1\", (void *) \&\1},/p'" # Handle CRLF in mingw tool chain opt_cr= case $build_os in mingw*) opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp ;; esac # Try without a prefix underscore, then with it. for ac_symprfx in "" "_"; do # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol. symxfrm="\\1 $ac_symprfx\\2 \\2" # Write the raw and C identifiers. if test "$lt_cv_nm_interface" = "MS dumpbin"; then # Fake it for dumpbin and say T for any non-static function, # D for any global variable and I for any imported variable. # Also find C++ and __fastcall symbols from MSVC++ or ICC, # which start with @ or ?. lt_cv_sys_global_symbol_pipe="$AWK '"\ " {last_section=section; section=\$ 3};"\ " /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\ " /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\ " /^ *Symbol name *: /{split(\$ 0,sn,\":\"); si=substr(sn[2],2)};"\ " /^ *Type *: code/{print \"T\",si,substr(si,length(prfx))};"\ " /^ *Type *: data/{print \"I\",si,substr(si,length(prfx))};"\ " \$ 0!~/External *\|/{next};"\ " / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\ " {if(hide[section]) next};"\ " {f=\"D\"}; \$ 0~/\(\).*\|/{f=\"T\"};"\ " {split(\$ 0,a,/\||\r/); split(a[2],s)};"\ " s[1]~/^[@?]/{print f,s[1],s[1]; next};"\ " s[1]~prfx {split(s[1],t,\"@\"); print f,t[1],substr(t[1],length(prfx))}"\ " ' prfx=^$ac_symprfx" else lt_cv_sys_global_symbol_pipe="$SED -n -e 's/^.*[ ]\($symcode$symcode*\)[ ][ ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'" fi lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | $SED '/ __gnu_lto/d'" # Check to see that the pipe works correctly. pipe_works=no rm -f conftest* cat > conftest.$ac_ext <<_LT_EOF #ifdef __cplusplus extern "C" { #endif char nm_test_var; void nm_test_func(void); void nm_test_func(void){} #ifdef __cplusplus } #endif int main(){nm_test_var='a';nm_test_func();return(0);} _LT_EOF if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then # Now try to grab the symbols. nlist=conftest.nm if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist\""; } >&5 (eval $NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } && test -s "$nlist"; then # Try sorting and uniquifying the output. if sort "$nlist" | uniq > "$nlist"T; then mv -f "$nlist"T "$nlist" else rm -f "$nlist"T fi # Make sure that we snagged all the symbols we need. if $GREP ' nm_test_var$' "$nlist" >/dev/null; then if $GREP ' nm_test_func$' "$nlist" >/dev/null; then cat <<_LT_EOF > conftest.$ac_ext /* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ #if defined _WIN32 || defined __CYGWIN__ || defined _WIN32_WCE /* DATA imports from DLLs on WIN32 can't be const, because runtime relocations are performed -- see ld's documentation on pseudo-relocs. */ # define LT_DLSYM_CONST #elif defined __osf__ /* This system does not cope well with relocations in const data. */ # define LT_DLSYM_CONST #else # define LT_DLSYM_CONST const #endif #ifdef __cplusplus extern "C" { #endif _LT_EOF # Now generate the symbol file. eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext' cat <<_LT_EOF >> conftest.$ac_ext /* The mapping between symbol names and symbols. */ LT_DLSYM_CONST struct { const char *name; void *address; } lt__PROGRAM__LTX_preloaded_symbols[] = { { "@PROGRAM@", (void *) 0 }, _LT_EOF $SED "s/^$symcode$symcode* .* \(.*\)$/ {\"\1\", (void *) \&\1},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext cat <<\_LT_EOF >> conftest.$ac_ext {0, (void *) 0} }; /* This works around a problem in FreeBSD linker */ #ifdef FREEBSD_WORKAROUND static const void *lt_preloaded_setup() { return lt__PROGRAM__LTX_preloaded_symbols; } #endif #ifdef __cplusplus } #endif _LT_EOF # Now try linking the two files. mv conftest.$ac_objext conftstm.$ac_objext lt_globsym_save_LIBS=$LIBS lt_globsym_save_CFLAGS=$CFLAGS LIBS=conftstm.$ac_objext CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag" if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5 (eval $ac_link) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } && test -s conftest$ac_exeext; then pipe_works=yes fi LIBS=$lt_globsym_save_LIBS CFLAGS=$lt_globsym_save_CFLAGS else echo "cannot find nm_test_func in $nlist" >&5 fi else echo "cannot find nm_test_var in $nlist" >&5 fi else echo "cannot run $lt_cv_sys_global_symbol_pipe" >&5 fi else echo "$progname: failed program was:" >&5 cat conftest.$ac_ext >&5 fi rm -rf conftest* conftst* # Do not use the global_symbol_pipe unless it works. if test yes = "$pipe_works"; then break else lt_cv_sys_global_symbol_pipe= fi done ;; esac fi if test -z "$lt_cv_sys_global_symbol_pipe"; then lt_cv_sys_global_symbol_to_cdecl= fi if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: failed" >&5 printf "%s\n" "failed" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: ok" >&5 printf "%s\n" "ok" >&6; } fi # Response file support. if test "$lt_cv_nm_interface" = "MS dumpbin"; then nm_file_list_spec='@' elif $NM --help 2>/dev/null | grep '[@]FILE' >/dev/null; then nm_file_list_spec='@' fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sysroot" >&5 printf %s "checking for sysroot... " >&6; } # Check whether --with-sysroot was given. if test ${with_sysroot+y} then : withval=$with_sysroot; else case e in #( e) with_sysroot=no ;; esac fi lt_sysroot= case $with_sysroot in #( yes) if test yes = "$GCC"; then lt_sysroot=`$CC --print-sysroot 2>/dev/null` fi ;; #( /*) lt_sysroot=`echo "$with_sysroot" | $SED -e "$sed_quote_subst"` ;; #( no|'') ;; #( *) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_sysroot" >&5 printf "%s\n" "$with_sysroot" >&6; } as_fn_error $? "The sysroot must be an absolute path." "$LINENO" 5 ;; esac { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: ${lt_sysroot:-no}" >&5 printf "%s\n" "${lt_sysroot:-no}" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a working dd" >&5 printf %s "checking for a working dd... " >&6; } if test ${ac_cv_path_lt_DD+y} then : printf %s "(cached) " >&6 else case e in #( e) printf 0123456789abcdef0123456789abcdef >conftest.i cat conftest.i conftest.i >conftest2.i : ${lt_DD:=$DD} if test -z "$lt_DD"; then ac_path_lt_DD_found=false # Loop through the user's path and test for each of PROGNAME-LIST as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_prog in dd do for ac_exec_ext in '' $ac_executable_extensions; do ac_path_lt_DD="$as_dir$ac_prog$ac_exec_ext" as_fn_executable_p "$ac_path_lt_DD" || continue if "$ac_path_lt_DD" bs=32 count=1 conftest.out 2>/dev/null; then cmp -s conftest.i conftest.out \ && ac_cv_path_lt_DD="$ac_path_lt_DD" ac_path_lt_DD_found=: fi $ac_path_lt_DD_found && break 3 done done done IFS=$as_save_IFS if test -z "$ac_cv_path_lt_DD"; then : fi else ac_cv_path_lt_DD=$lt_DD fi rm -f conftest.i conftest2.i conftest.out ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_lt_DD" >&5 printf "%s\n" "$ac_cv_path_lt_DD" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to truncate binary pipes" >&5 printf %s "checking how to truncate binary pipes... " >&6; } if test ${lt_cv_truncate_bin+y} then : printf %s "(cached) " >&6 else case e in #( e) printf 0123456789abcdef0123456789abcdef >conftest.i cat conftest.i conftest.i >conftest2.i lt_cv_truncate_bin= if "$ac_cv_path_lt_DD" bs=32 count=1 conftest.out 2>/dev/null; then cmp -s conftest.i conftest.out \ && lt_cv_truncate_bin="$ac_cv_path_lt_DD bs=4096 count=1" fi rm -f conftest.i conftest2.i conftest.out test -z "$lt_cv_truncate_bin" && lt_cv_truncate_bin="$SED -e 4q" ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_truncate_bin" >&5 printf "%s\n" "$lt_cv_truncate_bin" >&6; } # Calculate cc_basename. Skip known compiler wrappers and cross-prefix. func_cc_basename () { for cc_temp in $*""; do case $cc_temp in compile | *[\\/]compile | ccache | *[\\/]ccache ) ;; distcc | *[\\/]distcc | purify | *[\\/]purify ) ;; \-*) ;; *) break;; esac done func_cc_basename_result=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"` } # Check whether --enable-libtool-lock was given. if test ${enable_libtool_lock+y} then : enableval=$enable_libtool_lock; fi test no = "$enable_libtool_lock" || enable_libtool_lock=yes # Some flags need to be propagated to the compiler or linker for good # libtool support. case $host in ia64-*-hpux*) # Find out what ABI is being produced by ac_compile, and set mode # options accordingly. echo 'int i;' > conftest.$ac_ext if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then case `$FILECMD conftest.$ac_objext` in *ELF-32*) HPUX_IA64_MODE=32 ;; *ELF-64*) HPUX_IA64_MODE=64 ;; esac fi rm -rf conftest* ;; *-*-irix6*) # Find out what ABI is being produced by ac_compile, and set linker # options accordingly. echo '#line '$LINENO' "configure"' > conftest.$ac_ext if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then if test yes = "$lt_cv_prog_gnu_ld"; then case `$FILECMD conftest.$ac_objext` in *32-bit*) LD="${LD-ld} -melf32bsmip" ;; *N32*) LD="${LD-ld} -melf32bmipn32" ;; *64-bit*) LD="${LD-ld} -melf64bmip" ;; esac else case `$FILECMD conftest.$ac_objext` in *32-bit*) LD="${LD-ld} -32" ;; *N32*) LD="${LD-ld} -n32" ;; *64-bit*) LD="${LD-ld} -64" ;; esac fi fi rm -rf conftest* ;; mips64*-*linux*) # Find out what ABI is being produced by ac_compile, and set linker # options accordingly. echo '#line '$LINENO' "configure"' > conftest.$ac_ext if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then emul=elf case `$FILECMD conftest.$ac_objext` in *32-bit*) emul="${emul}32" ;; *64-bit*) emul="${emul}64" ;; esac case `$FILECMD conftest.$ac_objext` in *MSB*) emul="${emul}btsmip" ;; *LSB*) emul="${emul}ltsmip" ;; esac case `$FILECMD conftest.$ac_objext` in *N32*) emul="${emul}n32" ;; esac LD="${LD-ld} -m $emul" fi rm -rf conftest* ;; x86_64-*kfreebsd*-gnu|x86_64-*linux*|powerpc*-*linux*| \ s390*-*linux*|s390*-*tpf*|sparc*-*linux*) # Find out what ABI is being produced by ac_compile, and set linker # options accordingly. Note that the listed cases only cover the # situations where additional linker options are needed (such as when # doing 32-bit compilation for a host where ld defaults to 64-bit, or # vice versa); the common cases where no linker options are needed do # not appear in the list. echo 'int i;' > conftest.$ac_ext if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then case `$FILECMD conftest.o` in *32-bit*) case $host in x86_64-*kfreebsd*-gnu) LD="${LD-ld} -m elf_i386_fbsd" ;; x86_64-*linux*) case `$FILECMD conftest.o` in *x86-64*) LD="${LD-ld} -m elf32_x86_64" ;; *) LD="${LD-ld} -m elf_i386" ;; esac ;; powerpc64le-*linux*) LD="${LD-ld} -m elf32lppclinux" ;; powerpc64-*linux*) LD="${LD-ld} -m elf32ppclinux" ;; s390x-*linux*) LD="${LD-ld} -m elf_s390" ;; sparc64-*linux*) LD="${LD-ld} -m elf32_sparc" ;; esac ;; *64-bit*) case $host in x86_64-*kfreebsd*-gnu) LD="${LD-ld} -m elf_x86_64_fbsd" ;; x86_64-*linux*) LD="${LD-ld} -m elf_x86_64" ;; powerpcle-*linux*) LD="${LD-ld} -m elf64lppc" ;; powerpc-*linux*) LD="${LD-ld} -m elf64ppc" ;; s390*-*linux*|s390*-*tpf*) LD="${LD-ld} -m elf64_s390" ;; sparc*-*linux*) LD="${LD-ld} -m elf64_sparc" ;; esac ;; esac fi rm -rf conftest* ;; *-*-sco3.2v5*) # On SCO OpenServer 5, we need -belf to get full-featured binaries. SAVE_CFLAGS=$CFLAGS CFLAGS="$CFLAGS -belf" { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5 printf %s "checking whether the C compiler needs -belf... " >&6; } if test ${lt_cv_cc_needs_belf+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' ac_compiler_gnu=$ac_cv_c_compiler_gnu cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : lt_cv_cc_needs_belf=yes else case e in #( e) lt_cv_cc_needs_belf=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' ac_compiler_gnu=$ac_cv_c_compiler_gnu ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_cc_needs_belf" >&5 printf "%s\n" "$lt_cv_cc_needs_belf" >&6; } if test yes != "$lt_cv_cc_needs_belf"; then # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf CFLAGS=$SAVE_CFLAGS fi ;; *-*solaris*) # Find out what ABI is being produced by ac_compile, and set linker # options accordingly. echo 'int i;' > conftest.$ac_ext if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then case `$FILECMD conftest.o` in *64-bit*) case $lt_cv_prog_gnu_ld in yes*) case $host in i?86-*-solaris*|x86_64-*-solaris*) LD="${LD-ld} -m elf_x86_64" ;; sparc*-*-solaris*) LD="${LD-ld} -m elf64_sparc" ;; esac # GNU ld 2.21 introduced _sol2 emulations. Use them if available. if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then LD=${LD-ld}_sol2 fi ;; *) if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then LD="${LD-ld} -64" fi ;; esac ;; esac fi rm -rf conftest* ;; esac need_locks=$enable_libtool_lock if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}mt", so it can be a program name with args. set dummy ${ac_tool_prefix}mt; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_MANIFEST_TOOL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$MANIFEST_TOOL"; then ac_cv_prog_MANIFEST_TOOL="$MANIFEST_TOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_MANIFEST_TOOL="${ac_tool_prefix}mt" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi MANIFEST_TOOL=$ac_cv_prog_MANIFEST_TOOL if test -n "$MANIFEST_TOOL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MANIFEST_TOOL" >&5 printf "%s\n" "$MANIFEST_TOOL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_MANIFEST_TOOL"; then ac_ct_MANIFEST_TOOL=$MANIFEST_TOOL # Extract the first word of "mt", so it can be a program name with args. set dummy mt; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_MANIFEST_TOOL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_MANIFEST_TOOL"; then ac_cv_prog_ac_ct_MANIFEST_TOOL="$ac_ct_MANIFEST_TOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_MANIFEST_TOOL="mt" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_MANIFEST_TOOL=$ac_cv_prog_ac_ct_MANIFEST_TOOL if test -n "$ac_ct_MANIFEST_TOOL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MANIFEST_TOOL" >&5 printf "%s\n" "$ac_ct_MANIFEST_TOOL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_MANIFEST_TOOL" = x; then MANIFEST_TOOL=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac MANIFEST_TOOL=$ac_ct_MANIFEST_TOOL fi else MANIFEST_TOOL="$ac_cv_prog_MANIFEST_TOOL" fi test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $MANIFEST_TOOL is a manifest tool" >&5 printf %s "checking if $MANIFEST_TOOL is a manifest tool... " >&6; } if test ${lt_cv_path_mainfest_tool+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_path_mainfest_tool=no echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&5 $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out cat conftest.err >&5 if $GREP 'Manifest Tool' conftest.out > /dev/null; then lt_cv_path_mainfest_tool=yes fi rm -f conftest* ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_mainfest_tool" >&5 printf "%s\n" "$lt_cv_path_mainfest_tool" >&6; } if test yes != "$lt_cv_path_mainfest_tool"; then MANIFEST_TOOL=: fi case $host_os in rhapsody* | darwin*) if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}dsymutil", so it can be a program name with args. set dummy ${ac_tool_prefix}dsymutil; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_DSYMUTIL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$DSYMUTIL"; then ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi DSYMUTIL=$ac_cv_prog_DSYMUTIL if test -n "$DSYMUTIL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5 printf "%s\n" "$DSYMUTIL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_DSYMUTIL"; then ac_ct_DSYMUTIL=$DSYMUTIL # Extract the first word of "dsymutil", so it can be a program name with args. set dummy dsymutil; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_DSYMUTIL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_DSYMUTIL"; then ac_cv_prog_ac_ct_DSYMUTIL="$ac_ct_DSYMUTIL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_DSYMUTIL="dsymutil" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_DSYMUTIL=$ac_cv_prog_ac_ct_DSYMUTIL if test -n "$ac_ct_DSYMUTIL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DSYMUTIL" >&5 printf "%s\n" "$ac_ct_DSYMUTIL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_DSYMUTIL" = x; then DSYMUTIL=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac DSYMUTIL=$ac_ct_DSYMUTIL fi else DSYMUTIL="$ac_cv_prog_DSYMUTIL" fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}nmedit", so it can be a program name with args. set dummy ${ac_tool_prefix}nmedit; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_NMEDIT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$NMEDIT"; then ac_cv_prog_NMEDIT="$NMEDIT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi NMEDIT=$ac_cv_prog_NMEDIT if test -n "$NMEDIT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $NMEDIT" >&5 printf "%s\n" "$NMEDIT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_NMEDIT"; then ac_ct_NMEDIT=$NMEDIT # Extract the first word of "nmedit", so it can be a program name with args. set dummy nmedit; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_NMEDIT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_NMEDIT"; then ac_cv_prog_ac_ct_NMEDIT="$ac_ct_NMEDIT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_NMEDIT="nmedit" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_NMEDIT=$ac_cv_prog_ac_ct_NMEDIT if test -n "$ac_ct_NMEDIT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NMEDIT" >&5 printf "%s\n" "$ac_ct_NMEDIT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_NMEDIT" = x; then NMEDIT=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac NMEDIT=$ac_ct_NMEDIT fi else NMEDIT="$ac_cv_prog_NMEDIT" fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}lipo", so it can be a program name with args. set dummy ${ac_tool_prefix}lipo; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_LIPO+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$LIPO"; then ac_cv_prog_LIPO="$LIPO" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_LIPO="${ac_tool_prefix}lipo" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi LIPO=$ac_cv_prog_LIPO if test -n "$LIPO"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LIPO" >&5 printf "%s\n" "$LIPO" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_LIPO"; then ac_ct_LIPO=$LIPO # Extract the first word of "lipo", so it can be a program name with args. set dummy lipo; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_LIPO+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_LIPO"; then ac_cv_prog_ac_ct_LIPO="$ac_ct_LIPO" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_LIPO="lipo" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_LIPO=$ac_cv_prog_ac_ct_LIPO if test -n "$ac_ct_LIPO"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_LIPO" >&5 printf "%s\n" "$ac_ct_LIPO" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_LIPO" = x; then LIPO=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac LIPO=$ac_ct_LIPO fi else LIPO="$ac_cv_prog_LIPO" fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}otool", so it can be a program name with args. set dummy ${ac_tool_prefix}otool; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OTOOL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OTOOL"; then ac_cv_prog_OTOOL="$OTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OTOOL="${ac_tool_prefix}otool" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OTOOL=$ac_cv_prog_OTOOL if test -n "$OTOOL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OTOOL" >&5 printf "%s\n" "$OTOOL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OTOOL"; then ac_ct_OTOOL=$OTOOL # Extract the first word of "otool", so it can be a program name with args. set dummy otool; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OTOOL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OTOOL"; then ac_cv_prog_ac_ct_OTOOL="$ac_ct_OTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OTOOL="otool" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OTOOL=$ac_cv_prog_ac_ct_OTOOL if test -n "$ac_ct_OTOOL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL" >&5 printf "%s\n" "$ac_ct_OTOOL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OTOOL" = x; then OTOOL=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OTOOL=$ac_ct_OTOOL fi else OTOOL="$ac_cv_prog_OTOOL" fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}otool64", so it can be a program name with args. set dummy ${ac_tool_prefix}otool64; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OTOOL64+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OTOOL64"; then ac_cv_prog_OTOOL64="$OTOOL64" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OTOOL64=$ac_cv_prog_OTOOL64 if test -n "$OTOOL64"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OTOOL64" >&5 printf "%s\n" "$OTOOL64" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OTOOL64"; then ac_ct_OTOOL64=$OTOOL64 # Extract the first word of "otool64", so it can be a program name with args. set dummy otool64; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OTOOL64+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OTOOL64"; then ac_cv_prog_ac_ct_OTOOL64="$ac_ct_OTOOL64" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OTOOL64="otool64" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OTOOL64=$ac_cv_prog_ac_ct_OTOOL64 if test -n "$ac_ct_OTOOL64"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL64" >&5 printf "%s\n" "$ac_ct_OTOOL64" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OTOOL64" = x; then OTOOL64=":" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OTOOL64=$ac_ct_OTOOL64 fi else OTOOL64="$ac_cv_prog_OTOOL64" fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5 printf %s "checking for -single_module linker flag... " >&6; } if test ${lt_cv_apple_cc_single_mod+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_apple_cc_single_mod=no if test -z "$LT_MULTI_MODULE"; then # By default we will add the -single_module flag. You can override # by either setting the environment variable LT_MULTI_MODULE # non-empty at configure time, or by adding -multi_module to the # link flags. rm -rf libconftest.dylib* echo "int foo(void){return 1;}" > conftest.c echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \ -dynamiclib -Wl,-single_module conftest.c" >&5 $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \ -dynamiclib -Wl,-single_module conftest.c 2>conftest.err _lt_result=$? # If there is a non-empty error log, and "single_module" # appears in it, assume the flag caused a linker warning if test -s conftest.err && $GREP single_module conftest.err; then cat conftest.err >&5 # Otherwise, if the output was created with a 0 exit code from # the compiler, it worked. elif test -f libconftest.dylib && test 0 = "$_lt_result"; then lt_cv_apple_cc_single_mod=yes else cat conftest.err >&5 fi rm -rf libconftest.dylib* rm -f conftest.* fi ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5 printf "%s\n" "$lt_cv_apple_cc_single_mod" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5 printf %s "checking for -exported_symbols_list linker flag... " >&6; } if test ${lt_cv_ld_exported_symbols_list+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_ld_exported_symbols_list=no save_LDFLAGS=$LDFLAGS echo "_main" > conftest.sym LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : lt_cv_ld_exported_symbols_list=yes else case e in #( e) lt_cv_ld_exported_symbols_list=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LDFLAGS=$save_LDFLAGS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5 printf "%s\n" "$lt_cv_ld_exported_symbols_list" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for -force_load linker flag" >&5 printf %s "checking for -force_load linker flag... " >&6; } if test ${lt_cv_ld_force_load+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_ld_force_load=no cat > conftest.c << _LT_EOF int forced_loaded() { return 2;} _LT_EOF echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&5 $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&5 echo "$AR $AR_FLAGS libconftest.a conftest.o" >&5 $AR $AR_FLAGS libconftest.a conftest.o 2>&5 echo "$RANLIB libconftest.a" >&5 $RANLIB libconftest.a 2>&5 cat > conftest.c << _LT_EOF int main() { return 0;} _LT_EOF echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&5 $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err _lt_result=$? if test -s conftest.err && $GREP force_load conftest.err; then cat conftest.err >&5 elif test -f conftest && test 0 = "$_lt_result" && $GREP forced_load conftest >/dev/null 2>&1; then lt_cv_ld_force_load=yes else cat conftest.err >&5 fi rm -f conftest.err libconftest.a conftest conftest.c rm -rf conftest.dSYM ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_force_load" >&5 printf "%s\n" "$lt_cv_ld_force_load" >&6; } case $host_os in rhapsody* | darwin1.[012]) _lt_dar_allow_undefined='$wl-undefined ${wl}suppress' ;; darwin1.*) _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;; darwin*) case $MACOSX_DEPLOYMENT_TARGET,$host in 10.[012],*|,*powerpc*-darwin[5-8]*) _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;; *) _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;; esac ;; esac if test yes = "$lt_cv_apple_cc_single_mod"; then _lt_dar_single_mod='$single_module' fi if test yes = "$lt_cv_ld_exported_symbols_list"; then _lt_dar_export_syms=' $wl-exported_symbols_list,$output_objdir/$libname-symbols.expsym' else _lt_dar_export_syms='~$NMEDIT -s $output_objdir/$libname-symbols.expsym $lib' fi if test : != "$DSYMUTIL" && test no = "$lt_cv_ld_force_load"; then _lt_dsymutil='~$DSYMUTIL $lib || :' else _lt_dsymutil= fi ;; esac # func_munge_path_list VARIABLE PATH # ----------------------------------- # VARIABLE is name of variable containing _space_ separated list of # directories to be munged by the contents of PATH, which is string # having a format: # "DIR[:DIR]:" # string "DIR[ DIR]" will be prepended to VARIABLE # ":DIR[:DIR]" # string "DIR[ DIR]" will be appended to VARIABLE # "DIRP[:DIRP]::[DIRA:]DIRA" # string "DIRP[ DIRP]" will be prepended to VARIABLE and string # "DIRA[ DIRA]" will be appended to VARIABLE # "DIR[:DIR]" # VARIABLE will be replaced by "DIR[ DIR]" func_munge_path_list () { case x$2 in x) ;; *:) eval $1=\"`$ECHO $2 | $SED 's/:/ /g'` \$$1\" ;; x:*) eval $1=\"\$$1 `$ECHO $2 | $SED 's/:/ /g'`\" ;; *::*) eval $1=\"\$$1\ `$ECHO $2 | $SED -e 's/.*:://' -e 's/:/ /g'`\" eval $1=\"`$ECHO $2 | $SED -e 's/::.*//' -e 's/:/ /g'`\ \$$1\" ;; *) eval $1=\"`$ECHO $2 | $SED 's/:/ /g'`\" ;; esac } ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default " if test "x$ac_cv_header_dlfcn_h" = xyes then : printf "%s\n" "#define HAVE_DLFCN_H 1" >>confdefs.h fi # Set options enable_dlopen=no enable_win32_dll=no # Check whether --enable-shared was given. if test ${enable_shared+y} then : enableval=$enable_shared; p=${PACKAGE-default} case $enableval in yes) enable_shared=yes ;; no) enable_shared=no ;; *) enable_shared=no # Look at the argument we got. We use all the common list separators. lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, for pkg in $enableval; do IFS=$lt_save_ifs if test "X$pkg" = "X$p"; then enable_shared=yes fi done IFS=$lt_save_ifs ;; esac else case e in #( e) enable_shared=yes ;; esac fi # Check whether --enable-static was given. if test ${enable_static+y} then : enableval=$enable_static; p=${PACKAGE-default} case $enableval in yes) enable_static=yes ;; no) enable_static=no ;; *) enable_static=no # Look at the argument we got. We use all the common list separators. lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, for pkg in $enableval; do IFS=$lt_save_ifs if test "X$pkg" = "X$p"; then enable_static=yes fi done IFS=$lt_save_ifs ;; esac else case e in #( e) enable_static=yes ;; esac fi # Check whether --with-pic was given. if test ${with_pic+y} then : withval=$with_pic; lt_p=${PACKAGE-default} case $withval in yes|no) pic_mode=$withval ;; *) pic_mode=default # Look at the argument we got. We use all the common list separators. lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, for lt_pkg in $withval; do IFS=$lt_save_ifs if test "X$lt_pkg" = "X$lt_p"; then pic_mode=yes fi done IFS=$lt_save_ifs ;; esac else case e in #( e) pic_mode=default ;; esac fi # Check whether --enable-fast-install was given. if test ${enable_fast_install+y} then : enableval=$enable_fast_install; p=${PACKAGE-default} case $enableval in yes) enable_fast_install=yes ;; no) enable_fast_install=no ;; *) enable_fast_install=no # Look at the argument we got. We use all the common list separators. lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, for pkg in $enableval; do IFS=$lt_save_ifs if test "X$pkg" = "X$p"; then enable_fast_install=yes fi done IFS=$lt_save_ifs ;; esac else case e in #( e) enable_fast_install=yes ;; esac fi shared_archive_member_spec= case $host,$enable_shared in power*-*-aix[5-9]*,yes) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking which variant of shared library versioning to provide" >&5 printf %s "checking which variant of shared library versioning to provide... " >&6; } # Check whether --with-aix-soname was given. if test ${with_aix_soname+y} then : withval=$with_aix_soname; case $withval in aix|svr4|both) ;; *) as_fn_error $? "Unknown argument to --with-aix-soname" "$LINENO" 5 ;; esac lt_cv_with_aix_soname=$with_aix_soname else case e in #( e) if test ${lt_cv_with_aix_soname+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_with_aix_soname=aix ;; esac fi with_aix_soname=$lt_cv_with_aix_soname ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_aix_soname" >&5 printf "%s\n" "$with_aix_soname" >&6; } if test aix != "$with_aix_soname"; then # For the AIX way of multilib, we name the shared archive member # based on the bitwidth used, traditionally 'shr.o' or 'shr_64.o', # and 'shr.imp' or 'shr_64.imp', respectively, for the Import File. # Even when GNU compilers ignore OBJECT_MODE but need '-maix64' flag, # the AIX toolchain works better with OBJECT_MODE set (default 32). if test 64 = "${OBJECT_MODE-32}"; then shared_archive_member_spec=shr_64 else shared_archive_member_spec=shr fi fi ;; *) with_aix_soname=aix ;; esac # This can be used to rebuild libtool when needed LIBTOOL_DEPS=$ltmain # Always use our own libtool. LIBTOOL='$(SHELL) $(top_builddir)/libtool' test -z "$LN_S" && LN_S="ln -s" if test -n "${ZSH_VERSION+set}"; then setopt NO_GLOB_SUBST fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for objdir" >&5 printf %s "checking for objdir... " >&6; } if test ${lt_cv_objdir+y} then : printf %s "(cached) " >&6 else case e in #( e) rm -f .libs 2>/dev/null mkdir .libs 2>/dev/null if test -d .libs; then lt_cv_objdir=.libs else # MS-DOS does not allow filenames that begin with a dot. lt_cv_objdir=_libs fi rmdir .libs 2>/dev/null ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_objdir" >&5 printf "%s\n" "$lt_cv_objdir" >&6; } objdir=$lt_cv_objdir printf "%s\n" "#define LT_OBJDIR \"$lt_cv_objdir/\"" >>confdefs.h case $host_os in aix3*) # AIX sometimes has problems with the GCC collect2 program. For some # reason, if we set the COLLECT_NAMES environment variable, the problems # vanish in a puff of smoke. if test set != "${COLLECT_NAMES+set}"; then COLLECT_NAMES= export COLLECT_NAMES fi ;; esac # Global variables: ofile=libtool can_build_shared=yes # All known linkers require a '.a' archive for static linking (except MSVC and # ICC, which need '.lib'). libext=a with_gnu_ld=$lt_cv_prog_gnu_ld old_CC=$CC old_CFLAGS=$CFLAGS # Set sane defaults for various variables test -z "$CC" && CC=cc test -z "$LTCC" && LTCC=$CC test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS test -z "$LD" && LD=ld test -z "$ac_objext" && ac_objext=o func_cc_basename $compiler cc_basename=$func_cc_basename_result # Only perform the check for file, if the check method requires it test -z "$MAGIC_CMD" && MAGIC_CMD=file case $deplibs_check_method in file_magic*) if test "$file_magic_cmd" = '$MAGIC_CMD'; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ${ac_tool_prefix}file" >&5 printf %s "checking for ${ac_tool_prefix}file... " >&6; } if test ${lt_cv_path_MAGIC_CMD+y} then : printf %s "(cached) " >&6 else case e in #( e) case $MAGIC_CMD in [\\/*] | ?:[\\/]*) lt_cv_path_MAGIC_CMD=$MAGIC_CMD # Let the user override the test with a path. ;; *) lt_save_MAGIC_CMD=$MAGIC_CMD lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR ac_dummy="/usr/bin$PATH_SEPARATOR$PATH" for ac_dir in $ac_dummy; do IFS=$lt_save_ifs test -z "$ac_dir" && ac_dir=. if test -f "$ac_dir/${ac_tool_prefix}file"; then lt_cv_path_MAGIC_CMD=$ac_dir/"${ac_tool_prefix}file" if test -n "$file_magic_test_file"; then case $deplibs_check_method in "file_magic "*) file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"` MAGIC_CMD=$lt_cv_path_MAGIC_CMD if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null | $EGREP "$file_magic_regex" > /dev/null; then : else cat <<_LT_EOF 1>&2 *** Warning: the command libtool uses to detect shared libraries, *** $file_magic_cmd, produces output that libtool cannot recognize. *** The result is that libtool may fail to recognize shared libraries *** as such. This will affect the creation of libtool libraries that *** depend on shared libraries, but programs linked with such libtool *** libraries will work regardless of this problem. Nevertheless, you *** may want to report the problem to your system manager and/or to *** bug-libtool@gnu.org _LT_EOF fi ;; esac fi break fi done IFS=$lt_save_ifs MAGIC_CMD=$lt_save_MAGIC_CMD ;; esac ;; esac fi MAGIC_CMD=$lt_cv_path_MAGIC_CMD if test -n "$MAGIC_CMD"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5 printf "%s\n" "$MAGIC_CMD" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test -z "$lt_cv_path_MAGIC_CMD"; then if test -n "$ac_tool_prefix"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for file" >&5 printf %s "checking for file... " >&6; } if test ${lt_cv_path_MAGIC_CMD+y} then : printf %s "(cached) " >&6 else case e in #( e) case $MAGIC_CMD in [\\/*] | ?:[\\/]*) lt_cv_path_MAGIC_CMD=$MAGIC_CMD # Let the user override the test with a path. ;; *) lt_save_MAGIC_CMD=$MAGIC_CMD lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR ac_dummy="/usr/bin$PATH_SEPARATOR$PATH" for ac_dir in $ac_dummy; do IFS=$lt_save_ifs test -z "$ac_dir" && ac_dir=. if test -f "$ac_dir/file"; then lt_cv_path_MAGIC_CMD=$ac_dir/"file" if test -n "$file_magic_test_file"; then case $deplibs_check_method in "file_magic "*) file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"` MAGIC_CMD=$lt_cv_path_MAGIC_CMD if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null | $EGREP "$file_magic_regex" > /dev/null; then : else cat <<_LT_EOF 1>&2 *** Warning: the command libtool uses to detect shared libraries, *** $file_magic_cmd, produces output that libtool cannot recognize. *** The result is that libtool may fail to recognize shared libraries *** as such. This will affect the creation of libtool libraries that *** depend on shared libraries, but programs linked with such libtool *** libraries will work regardless of this problem. Nevertheless, you *** may want to report the problem to your system manager and/or to *** bug-libtool@gnu.org _LT_EOF fi ;; esac fi break fi done IFS=$lt_save_ifs MAGIC_CMD=$lt_save_MAGIC_CMD ;; esac ;; esac fi MAGIC_CMD=$lt_cv_path_MAGIC_CMD if test -n "$MAGIC_CMD"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5 printf "%s\n" "$MAGIC_CMD" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi else MAGIC_CMD=: fi fi fi ;; esac # Use C for the default configuration in the libtool script lt_save_CC=$CC ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' ac_compiler_gnu=$ac_cv_c_compiler_gnu # Source file extension for C test sources. ac_ext=c # Object file extension for compiled C test sources. objext=o objext=$objext # Code to be used in simple compile tests lt_simple_compile_test_code="int some_variable = 0;" # Code to be used in simple link tests lt_simple_link_test_code='int main(){return(0);}' # If no C compiler was specified, use CC. LTCC=${LTCC-"$CC"} # If no C compiler flags were specified, use CFLAGS. LTCFLAGS=${LTCFLAGS-"$CFLAGS"} # Allow CC to be a program name with arguments. compiler=$CC # Save the default compiler, since it gets overwritten when the other # tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP. compiler_DEFAULT=$CC # save warnings/boilerplate of simple test code ac_outfile=conftest.$ac_objext echo "$lt_simple_compile_test_code" >conftest.$ac_ext eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err _lt_compiler_boilerplate=`cat conftest.err` $RM conftest* ac_outfile=conftest.$ac_objext echo "$lt_simple_link_test_code" >conftest.$ac_ext eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err _lt_linker_boilerplate=`cat conftest.err` $RM -r conftest* ## CAVEAT EMPTOR: ## There is no encapsulation within the following macros, do not change ## the running order or otherwise move them around unless you know exactly ## what you are doing... if test -n "$compiler"; then lt_prog_compiler_no_builtin_flag= if test yes = "$GCC"; then case $cc_basename in nvcc*) lt_prog_compiler_no_builtin_flag=' -Xcompiler -fno-builtin' ;; *) lt_prog_compiler_no_builtin_flag=' -fno-builtin' ;; esac { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -fno-rtti -fno-exceptions" >&5 printf %s "checking if $compiler supports -fno-rtti -fno-exceptions... " >&6; } if test ${lt_cv_prog_compiler_rtti_exceptions+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_prog_compiler_rtti_exceptions=no ac_outfile=conftest.$ac_objext echo "$lt_simple_compile_test_code" > conftest.$ac_ext lt_compiler_flag="-fno-rtti -fno-exceptions" ## exclude from sc_useless_quotes_in_assignment # Insert the option either (1) after the last *FLAGS variable, or # (2) before a word containing "conftest.", or (3) at the end. # Note that $ac_compile itself does not contain backslashes and begins # with a dollar sign (not a hyphen), so the echo should work correctly. # The option is referenced via a variable to avoid confusing sed. lt_compile=`echo "$ac_compile" | $SED \ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \ -e 's:$: $lt_compiler_flag:'` (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5) (eval "$lt_compile" 2>conftest.err) ac_status=$? cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 if (exit $ac_status) && test -s "$ac_outfile"; then # The compiler can only warn and ignore the option if not recognized # So say no if there are warnings other than the usual output. $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then lt_cv_prog_compiler_rtti_exceptions=yes fi fi $RM conftest* ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_rtti_exceptions" >&5 printf "%s\n" "$lt_cv_prog_compiler_rtti_exceptions" >&6; } if test yes = "$lt_cv_prog_compiler_rtti_exceptions"; then lt_prog_compiler_no_builtin_flag="$lt_prog_compiler_no_builtin_flag -fno-rtti -fno-exceptions" else : fi fi lt_prog_compiler_wl= lt_prog_compiler_pic= lt_prog_compiler_static= if test yes = "$GCC"; then lt_prog_compiler_wl='-Wl,' lt_prog_compiler_static='-static' case $host_os in aix*) # All AIX code is PIC. if test ia64 = "$host_cpu"; then # AIX 5 now supports IA64 processor lt_prog_compiler_static='-Bstatic' fi lt_prog_compiler_pic='-fPIC' ;; amigaos*) case $host_cpu in powerpc) # see comment about AmigaOS4 .so support lt_prog_compiler_pic='-fPIC' ;; m68k) # FIXME: we need at least 68020 code to build shared libraries, but # adding the '-m68020' flag to GCC prevents building anything better, # like '-m68040'. lt_prog_compiler_pic='-m68020 -resident32 -malways-restore-a4' ;; esac ;; beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*) # PIC is the default for these OSes. ;; mingw* | cygwin* | pw32* | os2* | cegcc*) # This hack is so that the source file can tell whether it is being # built for inclusion in a dll (and should export symbols for example). # Although the cygwin gcc ignores -fPIC, still need this for old-style # (--disable-auto-import) libraries lt_prog_compiler_pic='-DDLL_EXPORT' case $host_os in os2*) lt_prog_compiler_static='$wl-static' ;; esac ;; darwin* | rhapsody*) # PIC is the default on this platform # Common symbols not allowed in MH_DYLIB files lt_prog_compiler_pic='-fno-common' ;; haiku*) # PIC is the default for Haiku. # The "-static" flag exists, but is broken. lt_prog_compiler_static= ;; hpux*) # PIC is the default for 64-bit PA HP-UX, but not for 32-bit # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag # sets the default TLS model and affects inlining. case $host_cpu in hppa*64*) # +Z the default ;; *) lt_prog_compiler_pic='-fPIC' ;; esac ;; interix[3-9]*) # Interix 3.x gcc -fpic/-fPIC options generate broken code. # Instead, we relocate shared libraries at runtime. ;; msdosdjgpp*) # Just because we use GCC doesn't mean we suddenly get shared libraries # on systems that don't support them. lt_prog_compiler_can_build_shared=no enable_shared=no ;; *nto* | *qnx*) # QNX uses GNU C++, but need to define -shared option too, otherwise # it will coredump. lt_prog_compiler_pic='-fPIC -shared' ;; sysv4*MP*) if test -d /usr/nec; then lt_prog_compiler_pic=-Kconform_pic fi ;; *) lt_prog_compiler_pic='-fPIC' ;; esac case $cc_basename in nvcc*) # Cuda Compiler Driver 2.2 lt_prog_compiler_wl='-Xlinker ' if test -n "$lt_prog_compiler_pic"; then lt_prog_compiler_pic="-Xcompiler $lt_prog_compiler_pic" fi ;; esac else # PORTME Check for flag to pass linker flags through the system compiler. case $host_os in aix*) lt_prog_compiler_wl='-Wl,' if test ia64 = "$host_cpu"; then # AIX 5 now supports IA64 processor lt_prog_compiler_static='-Bstatic' else lt_prog_compiler_static='-bnso -bI:/lib/syscalls.exp' fi ;; darwin* | rhapsody*) # PIC is the default on this platform # Common symbols not allowed in MH_DYLIB files lt_prog_compiler_pic='-fno-common' case $cc_basename in nagfor*) # NAG Fortran compiler lt_prog_compiler_wl='-Wl,-Wl,,' lt_prog_compiler_pic='-PIC' lt_prog_compiler_static='-Bstatic' ;; esac ;; mingw* | cygwin* | pw32* | os2* | cegcc*) # This hack is so that the source file can tell whether it is being # built for inclusion in a dll (and should export symbols for example). lt_prog_compiler_pic='-DDLL_EXPORT' case $host_os in os2*) lt_prog_compiler_static='$wl-static' ;; esac ;; hpux9* | hpux10* | hpux11*) lt_prog_compiler_wl='-Wl,' # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but # not for PA HP-UX. case $host_cpu in hppa*64*|ia64*) # +Z the default ;; *) lt_prog_compiler_pic='+Z' ;; esac # Is there a better lt_prog_compiler_static that works with the bundled CC? lt_prog_compiler_static='$wl-a ${wl}archive' ;; irix5* | irix6* | nonstopux*) lt_prog_compiler_wl='-Wl,' # PIC (with -KPIC) is the default. lt_prog_compiler_static='-non_shared' ;; linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) case $cc_basename in # old Intel for x86_64, which still supported -KPIC. ecc*) lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='-KPIC' lt_prog_compiler_static='-static' ;; # icc used to be incompatible with GCC. # ICC 10 doesn't accept -KPIC any more. icc* | ifort*) lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='-fPIC' lt_prog_compiler_static='-static' ;; # Lahey Fortran 8.1. lf95*) lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='--shared' lt_prog_compiler_static='--static' ;; nagfor*) # NAG Fortran compiler lt_prog_compiler_wl='-Wl,-Wl,,' lt_prog_compiler_pic='-PIC' lt_prog_compiler_static='-Bstatic' ;; tcc*) # Fabrice Bellard et al's Tiny C Compiler lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='-fPIC' lt_prog_compiler_static='-static' ;; pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*) # Portland Group compilers (*not* the Pentium gcc compiler, # which looks to be a dead project) lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='-fpic' lt_prog_compiler_static='-Bstatic' ;; ccc*) lt_prog_compiler_wl='-Wl,' # All Alpha code is PIC. lt_prog_compiler_static='-non_shared' ;; xl* | bgxl* | bgf* | mpixl*) # IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='-qpic' lt_prog_compiler_static='-qstaticlink' ;; *) case `$CC -V 2>&1 | $SED 5q` in *Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [1-7].* | *Sun*Fortran*\ 8.[0-3]*) # Sun Fortran 8.3 passes all unrecognized flags to the linker lt_prog_compiler_pic='-KPIC' lt_prog_compiler_static='-Bstatic' lt_prog_compiler_wl='' ;; *Sun\ F* | *Sun*Fortran*) lt_prog_compiler_pic='-KPIC' lt_prog_compiler_static='-Bstatic' lt_prog_compiler_wl='-Qoption ld ' ;; *Sun\ C*) # Sun C 5.9 lt_prog_compiler_pic='-KPIC' lt_prog_compiler_static='-Bstatic' lt_prog_compiler_wl='-Wl,' ;; *Intel*\ [CF]*Compiler*) lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='-fPIC' lt_prog_compiler_static='-static' ;; *Portland\ Group*) lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='-fpic' lt_prog_compiler_static='-Bstatic' ;; esac ;; esac ;; newsos6) lt_prog_compiler_pic='-KPIC' lt_prog_compiler_static='-Bstatic' ;; *nto* | *qnx*) # QNX uses GNU C++, but need to define -shared option too, otherwise # it will coredump. lt_prog_compiler_pic='-fPIC -shared' ;; osf3* | osf4* | osf5*) lt_prog_compiler_wl='-Wl,' # All OSF/1 code is PIC. lt_prog_compiler_static='-non_shared' ;; rdos*) lt_prog_compiler_static='-non_shared' ;; solaris*) lt_prog_compiler_pic='-KPIC' lt_prog_compiler_static='-Bstatic' case $cc_basename in f77* | f90* | f95* | sunf77* | sunf90* | sunf95*) lt_prog_compiler_wl='-Qoption ld ';; *) lt_prog_compiler_wl='-Wl,';; esac ;; sunos4*) lt_prog_compiler_wl='-Qoption ld ' lt_prog_compiler_pic='-PIC' lt_prog_compiler_static='-Bstatic' ;; sysv4 | sysv4.2uw2* | sysv4.3*) lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='-KPIC' lt_prog_compiler_static='-Bstatic' ;; sysv4*MP*) if test -d /usr/nec; then lt_prog_compiler_pic='-Kconform_pic' lt_prog_compiler_static='-Bstatic' fi ;; sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*) lt_prog_compiler_wl='-Wl,' lt_prog_compiler_pic='-KPIC' lt_prog_compiler_static='-Bstatic' ;; unicos*) lt_prog_compiler_wl='-Wl,' lt_prog_compiler_can_build_shared=no ;; uts4*) lt_prog_compiler_pic='-pic' lt_prog_compiler_static='-Bstatic' ;; *) lt_prog_compiler_can_build_shared=no ;; esac fi case $host_os in # For platforms that do not support PIC, -DPIC is meaningless: *djgpp*) lt_prog_compiler_pic= ;; *) lt_prog_compiler_pic="$lt_prog_compiler_pic -DPIC" ;; esac { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5 printf %s "checking for $compiler option to produce PIC... " >&6; } if test ${lt_cv_prog_compiler_pic+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_prog_compiler_pic=$lt_prog_compiler_pic ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic" >&5 printf "%s\n" "$lt_cv_prog_compiler_pic" >&6; } lt_prog_compiler_pic=$lt_cv_prog_compiler_pic # # Check to make sure the PIC flag actually works. # if test -n "$lt_prog_compiler_pic"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic works" >&5 printf %s "checking if $compiler PIC flag $lt_prog_compiler_pic works... " >&6; } if test ${lt_cv_prog_compiler_pic_works+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_prog_compiler_pic_works=no ac_outfile=conftest.$ac_objext echo "$lt_simple_compile_test_code" > conftest.$ac_ext lt_compiler_flag="$lt_prog_compiler_pic -DPIC" ## exclude from sc_useless_quotes_in_assignment # Insert the option either (1) after the last *FLAGS variable, or # (2) before a word containing "conftest.", or (3) at the end. # Note that $ac_compile itself does not contain backslashes and begins # with a dollar sign (not a hyphen), so the echo should work correctly. # The option is referenced via a variable to avoid confusing sed. lt_compile=`echo "$ac_compile" | $SED \ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \ -e 's:$: $lt_compiler_flag:'` (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5) (eval "$lt_compile" 2>conftest.err) ac_status=$? cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 if (exit $ac_status) && test -s "$ac_outfile"; then # The compiler can only warn and ignore the option if not recognized # So say no if there are warnings other than the usual output. $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then lt_cv_prog_compiler_pic_works=yes fi fi $RM conftest* ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic_works" >&5 printf "%s\n" "$lt_cv_prog_compiler_pic_works" >&6; } if test yes = "$lt_cv_prog_compiler_pic_works"; then case $lt_prog_compiler_pic in "" | " "*) ;; *) lt_prog_compiler_pic=" $lt_prog_compiler_pic" ;; esac else lt_prog_compiler_pic= lt_prog_compiler_can_build_shared=no fi fi # # Check to make sure the static flag actually works. # wl=$lt_prog_compiler_wl eval lt_tmp_static_flag=\"$lt_prog_compiler_static\" { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $compiler static flag $lt_tmp_static_flag works" >&5 printf %s "checking if $compiler static flag $lt_tmp_static_flag works... " >&6; } if test ${lt_cv_prog_compiler_static_works+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_prog_compiler_static_works=no save_LDFLAGS=$LDFLAGS LDFLAGS="$LDFLAGS $lt_tmp_static_flag" echo "$lt_simple_link_test_code" > conftest.$ac_ext if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then # The linker can only warn and ignore the option if not recognized # So say no if there are warnings if test -s conftest.err; then # Append any errors to the config.log. cat conftest.err 1>&5 $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 if diff conftest.exp conftest.er2 >/dev/null; then lt_cv_prog_compiler_static_works=yes fi else lt_cv_prog_compiler_static_works=yes fi fi $RM -r conftest* LDFLAGS=$save_LDFLAGS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_static_works" >&5 printf "%s\n" "$lt_cv_prog_compiler_static_works" >&6; } if test yes = "$lt_cv_prog_compiler_static_works"; then : else lt_prog_compiler_static= fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5 printf %s "checking if $compiler supports -c -o file.$ac_objext... " >&6; } if test ${lt_cv_prog_compiler_c_o+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_prog_compiler_c_o=no $RM -r conftest 2>/dev/null mkdir conftest cd conftest mkdir out echo "$lt_simple_compile_test_code" > conftest.$ac_ext lt_compiler_flag="-o out/conftest2.$ac_objext" # Insert the option either (1) after the last *FLAGS variable, or # (2) before a word containing "conftest.", or (3) at the end. # Note that $ac_compile itself does not contain backslashes and begins # with a dollar sign (not a hyphen), so the echo should work correctly. lt_compile=`echo "$ac_compile" | $SED \ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \ -e 's:$: $lt_compiler_flag:'` (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5) (eval "$lt_compile" 2>out/conftest.err) ac_status=$? cat out/conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 if (exit $ac_status) && test -s out/conftest2.$ac_objext then # The compiler can only warn and ignore the option if not recognized # So say no if there are warnings $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2 if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then lt_cv_prog_compiler_c_o=yes fi fi chmod u+w . 2>&5 $RM conftest* # SGI C++ compiler will create directory out/ii_files/ for # template instantiation test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files $RM out/* && rmdir out cd .. $RM -r conftest $RM conftest* ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5 printf "%s\n" "$lt_cv_prog_compiler_c_o" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5 printf %s "checking if $compiler supports -c -o file.$ac_objext... " >&6; } if test ${lt_cv_prog_compiler_c_o+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_prog_compiler_c_o=no $RM -r conftest 2>/dev/null mkdir conftest cd conftest mkdir out echo "$lt_simple_compile_test_code" > conftest.$ac_ext lt_compiler_flag="-o out/conftest2.$ac_objext" # Insert the option either (1) after the last *FLAGS variable, or # (2) before a word containing "conftest.", or (3) at the end. # Note that $ac_compile itself does not contain backslashes and begins # with a dollar sign (not a hyphen), so the echo should work correctly. lt_compile=`echo "$ac_compile" | $SED \ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \ -e 's:$: $lt_compiler_flag:'` (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5) (eval "$lt_compile" 2>out/conftest.err) ac_status=$? cat out/conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 if (exit $ac_status) && test -s out/conftest2.$ac_objext then # The compiler can only warn and ignore the option if not recognized # So say no if there are warnings $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2 if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then lt_cv_prog_compiler_c_o=yes fi fi chmod u+w . 2>&5 $RM conftest* # SGI C++ compiler will create directory out/ii_files/ for # template instantiation test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files $RM out/* && rmdir out cd .. $RM -r conftest $RM conftest* ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5 printf "%s\n" "$lt_cv_prog_compiler_c_o" >&6; } hard_links=nottested if test no = "$lt_cv_prog_compiler_c_o" && test no != "$need_locks"; then # do not overwrite the value of need_locks provided by the user { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we can lock with hard links" >&5 printf %s "checking if we can lock with hard links... " >&6; } hard_links=yes $RM conftest* ln conftest.a conftest.b 2>/dev/null && hard_links=no touch conftest.a ln conftest.a conftest.b 2>&5 || hard_links=no ln conftest.a conftest.b 2>/dev/null && hard_links=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $hard_links" >&5 printf "%s\n" "$hard_links" >&6; } if test no = "$hard_links"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: '$CC' does not support '-c -o', so 'make -j' may be unsafe" >&5 printf "%s\n" "$as_me: WARNING: '$CC' does not support '-c -o', so 'make -j' may be unsafe" >&2;} need_locks=warn fi else need_locks=no fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the $compiler linker ($LD) supports shared libraries" >&5 printf %s "checking whether the $compiler linker ($LD) supports shared libraries... " >&6; } runpath_var= allow_undefined_flag= always_export_symbols=no archive_cmds= archive_expsym_cmds= compiler_needs_object=no enable_shared_with_static_runtimes=no export_dynamic_flag_spec= export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols' hardcode_automatic=no hardcode_direct=no hardcode_direct_absolute=no hardcode_libdir_flag_spec= hardcode_libdir_separator= hardcode_minus_L=no hardcode_shlibpath_var=unsupported inherit_rpath=no link_all_deplibs=unknown module_cmds= module_expsym_cmds= old_archive_from_new_cmds= old_archive_from_expsyms_cmds= thread_safe_flag_spec= whole_archive_flag_spec= # include_expsyms should be a list of space-separated symbols to be *always* # included in the symbol list include_expsyms= # exclude_expsyms can be an extended regexp of symbols to exclude # it will be wrapped by ' (' and ')$', so one must not match beginning or # end of line. Example: 'a|bc|.*d.*' will exclude the symbols 'a' and 'bc', # as well as any symbol that contains 'd'. exclude_expsyms='_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*' # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out # platforms (ab)use it in PIC code, but their linkers get confused if # the symbol is explicitly referenced. Since portable code cannot # rely on this symbol name, it's probably fine to never include it in # preloaded symbol tables. # Exclude shared library initialization/finalization symbols. extract_expsyms_cmds= case $host_os in cygwin* | mingw* | pw32* | cegcc*) # FIXME: the MSVC++ and ICC port hasn't been tested in a loooong time # When not using gcc, we currently assume that we are using # Microsoft Visual C++ or Intel C++ Compiler. if test yes != "$GCC"; then with_gnu_ld=no fi ;; interix*) # we just hope/assume this is gcc and not c89 (= MSVC++ or ICC) with_gnu_ld=yes ;; openbsd* | bitrig*) with_gnu_ld=no ;; esac ld_shlibs=yes # On some targets, GNU ld is compatible enough with the native linker # that we're better off using the native interface for both. lt_use_gnu_ld_interface=no if test yes = "$with_gnu_ld"; then case $host_os in aix*) # The AIX port of GNU ld has always aspired to compatibility # with the native linker. However, as the warning in the GNU ld # block says, versions before 2.19.5* couldn't really create working # shared libraries, regardless of the interface used. case `$LD -v 2>&1` in *\ \(GNU\ Binutils\)\ 2.19.5*) ;; *\ \(GNU\ Binutils\)\ 2.[2-9]*) ;; *\ \(GNU\ Binutils\)\ [3-9]*) ;; *) lt_use_gnu_ld_interface=yes ;; esac ;; *) lt_use_gnu_ld_interface=yes ;; esac fi if test yes = "$lt_use_gnu_ld_interface"; then # If archive_cmds runs LD, not CC, wlarc should be empty wlarc='$wl' # Set some defaults for GNU ld with shared library support. These # are reset later if shared libraries are not supported. 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then lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` fi fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext if test -z "$lt_cv_aix_libpath_"; then lt_cv_aix_libpath_=/usr/lib:/lib fi ;; esac fi aix_libpath=$lt_cv_aix_libpath_ fi hardcode_libdir_flag_spec='$wl-blibpath:$libdir:'"$aix_libpath" archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs $wl'$no_entry_flag' $compiler_flags `if test -n "$allow_undefined_flag"; then func_echo_all "$wl$allow_undefined_flag"; else :; fi` $wl'$exp_sym_flag:\$export_symbols' '$shared_flag else if test ia64 = "$host_cpu"; then hardcode_libdir_flag_spec='$wl-R $libdir:/usr/lib:/lib' allow_undefined_flag="-z nodefs" archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\$wl$no_entry_flag"' $compiler_flags $wl$allow_undefined_flag '"\$wl$exp_sym_flag:\$export_symbols" else # Determine the default libpath from the value encoded in an # empty executable. if test set = "${lt_cv_aix_libpath+set}"; then aix_libpath=$lt_cv_aix_libpath else if test ${lt_cv_aix_libpath_+y} then : printf %s "(cached) " >&6 else case e in #( e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : lt_aix_libpath_sed=' /Import File Strings/,/^$/ { /^0/ { s/^0 *\([^ ]*\) *$/\1/ p } }' lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` # Check for a 64-bit object if we didn't find anything. if test -z "$lt_cv_aix_libpath_"; then lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` fi fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext if test -z "$lt_cv_aix_libpath_"; then lt_cv_aix_libpath_=/usr/lib:/lib fi ;; esac fi aix_libpath=$lt_cv_aix_libpath_ fi hardcode_libdir_flag_spec='$wl-blibpath:$libdir:'"$aix_libpath" # Warning - without using the other run time loading flags, # -berok will link without error, but may produce a broken library. no_undefined_flag=' $wl-bernotok' allow_undefined_flag=' $wl-berok' if test yes = "$with_gnu_ld"; then # We only use this code for GNU lds that support --whole-archive. whole_archive_flag_spec='$wl--whole-archive$convenience $wl--no-whole-archive' else # Exported symbols can be pulled into shared objects from archives whole_archive_flag_spec='$convenience' fi archive_cmds_need_lc=yes archive_expsym_cmds='$RM -r $output_objdir/$realname.d~$MKDIR $output_objdir/$realname.d' # -brtl affects multiple linker settings, -berok does not and is overridden later compiler_flags_filtered='`func_echo_all "$compiler_flags " | $SED -e "s%-brtl\\([, ]\\)%-berok\\1%g"`' if test svr4 != "$with_aix_soname"; then # This is similar to how AIX traditionally builds its shared libraries. archive_expsym_cmds="$archive_expsym_cmds"'~$CC '$shared_flag_aix' -o $output_objdir/$realname.d/$soname $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$realname.d/$soname' fi if test aix != "$with_aix_soname"; then archive_expsym_cmds="$archive_expsym_cmds"'~$CC '$shared_flag_svr4' -o $output_objdir/$realname.d/$shared_archive_member_spec.o $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$STRIP -e $output_objdir/$realname.d/$shared_archive_member_spec.o~( func_echo_all "#! $soname($shared_archive_member_spec.o)"; if test shr_64 = "$shared_archive_member_spec"; then func_echo_all "# 64"; else func_echo_all "# 32"; fi; cat $export_symbols ) > $output_objdir/$realname.d/$shared_archive_member_spec.imp~$AR $AR_FLAGS $output_objdir/$soname $output_objdir/$realname.d/$shared_archive_member_spec.o $output_objdir/$realname.d/$shared_archive_member_spec.imp' else # used by -dlpreopen to get the symbols archive_expsym_cmds="$archive_expsym_cmds"'~$MV $output_objdir/$realname.d/$soname $output_objdir' fi archive_expsym_cmds="$archive_expsym_cmds"'~$RM -r $output_objdir/$realname.d' fi fi ;; amigaos*) case $host_cpu in powerpc) # see comment about AmigaOS4 .so support archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' archive_expsym_cmds='' ;; m68k) archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)' hardcode_libdir_flag_spec='-L$libdir' hardcode_minus_L=yes ;; esac ;; bsdi[45]*) export_dynamic_flag_spec=-rdynamic ;; cygwin* | mingw* | pw32* | cegcc*) # When not using gcc, we currently assume that we are using # Microsoft Visual C++ or Intel C++ Compiler. # hardcode_libdir_flag_spec is actually meaningless, as there is # no search path for DLLs. case $cc_basename in cl* | icl*) # Native MSVC or ICC hardcode_libdir_flag_spec=' ' allow_undefined_flag=unsupported always_export_symbols=yes file_list_spec='@' # Tell ltmain to make .lib files, not .a files. libext=lib # Tell ltmain to make .dll files, not .so files. shrext_cmds=.dll # FIXME: Setting linknames here is a bad hack. archive_cmds='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~linknames=' archive_expsym_cmds='if test DEF = "`$SED -n -e '\''s/^[ ]*//'\'' -e '\''/^\(;.*\)*$/d'\'' -e '\''s/^\(EXPORTS\|LIBRARY\)\([ ].*\)*$/DEF/p'\'' -e q $export_symbols`" ; then cp "$export_symbols" "$output_objdir/$soname.def"; echo "$tool_output_objdir$soname.def" > "$output_objdir/$soname.exp"; else $SED -e '\''s/^/-link -EXPORT:/'\'' < $export_symbols > $output_objdir/$soname.exp; fi~ $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~ linknames=' # The linker will not automatically build a static lib if we build a DLL. # _LT_TAGVAR(old_archive_from_new_cmds, )='true' enable_shared_with_static_runtimes=yes exclude_expsyms='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*' export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1,DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols' # Don't use ranlib old_postinstall_cmds='chmod 644 $oldlib' postlink_cmds='lt_outputfile="@OUTPUT@"~ lt_tool_outputfile="@TOOL_OUTPUT@"~ case $lt_outputfile in *.exe|*.EXE) ;; *) lt_outputfile=$lt_outputfile.exe lt_tool_outputfile=$lt_tool_outputfile.exe ;; esac~ if test : != "$MANIFEST_TOOL" && test -f "$lt_outputfile.manifest"; then $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1; $RM "$lt_outputfile.manifest"; fi' ;; *) # Assume MSVC and ICC wrapper hardcode_libdir_flag_spec=' ' allow_undefined_flag=unsupported # Tell ltmain to make .lib files, not .a files. libext=lib # Tell ltmain to make .dll files, not .so files. shrext_cmds=.dll # FIXME: Setting linknames here is a bad hack. archive_cmds='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames=' # The linker will automatically build a .lib file if we build a DLL. old_archive_from_new_cmds='true' # FIXME: Should let the user specify the lib program. old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs' enable_shared_with_static_runtimes=yes ;; esac ;; darwin* | rhapsody*) archive_cmds_need_lc=no hardcode_direct=no hardcode_automatic=yes hardcode_shlibpath_var=unsupported if test yes = "$lt_cv_ld_force_load"; then whole_archive_flag_spec='`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience $wl-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`' else whole_archive_flag_spec='' fi link_all_deplibs=yes allow_undefined_flag=$_lt_dar_allow_undefined case $cc_basename in ifort*|nagfor*) _lt_dar_can_shared=yes ;; *) _lt_dar_can_shared=$GCC ;; esac if test yes = "$_lt_dar_can_shared"; then output_verbose_link_cmd=func_echo_all archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dsymutil" module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dsymutil" archive_expsym_cmds="$SED 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil" module_expsym_cmds="$SED -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil" else ld_shlibs=no fi ;; dgux*) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_libdir_flag_spec='-L$libdir' hardcode_shlibpath_var=no ;; # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor # support. Future versions do this automatically, but an explicit c++rt0.o # does not break anything, and helps significantly (at the cost of a little # extra space). freebsd2.2*) archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o' hardcode_libdir_flag_spec='-R$libdir' hardcode_direct=yes hardcode_shlibpath_var=no ;; # Unfortunately, older versions of FreeBSD 2 do not have this feature. freebsd2.*) archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' hardcode_direct=yes hardcode_minus_L=yes hardcode_shlibpath_var=no ;; # FreeBSD 3 and greater uses gcc -shared to do shared libraries. freebsd* | dragonfly* | midnightbsd*) archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' hardcode_libdir_flag_spec='-R$libdir' hardcode_direct=yes hardcode_shlibpath_var=no ;; hpux9*) if test yes = "$GCC"; then archive_cmds='$RM $output_objdir/$soname~$CC -shared $pic_flag $wl+b $wl$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib' else archive_cmds='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib' fi hardcode_libdir_flag_spec='$wl+b $wl$libdir' hardcode_libdir_separator=: hardcode_direct=yes # hardcode_minus_L: Not really in the search PATH, # but as the default location of the library. hardcode_minus_L=yes export_dynamic_flag_spec='$wl-E' ;; hpux10*) if test yes,no = "$GCC,$with_gnu_ld"; then archive_cmds='$CC -shared $pic_flag $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags' else archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' fi if test no = "$with_gnu_ld"; then hardcode_libdir_flag_spec='$wl+b $wl$libdir' hardcode_libdir_separator=: hardcode_direct=yes hardcode_direct_absolute=yes export_dynamic_flag_spec='$wl-E' # hardcode_minus_L: Not really in the search PATH, # but as the default location of the library. hardcode_minus_L=yes fi ;; hpux11*) if test yes,no = "$GCC,$with_gnu_ld"; then case $host_cpu in hppa*64*) archive_cmds='$CC -shared $wl+h $wl$soname -o $lib $libobjs $deplibs $compiler_flags' ;; ia64*) archive_cmds='$CC -shared $pic_flag $wl+h $wl$soname $wl+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags' ;; *) archive_cmds='$CC -shared $pic_flag $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags' ;; esac else case $host_cpu in hppa*64*) archive_cmds='$CC -b $wl+h $wl$soname -o $lib $libobjs $deplibs $compiler_flags' ;; ia64*) archive_cmds='$CC -b $wl+h $wl$soname $wl+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags' ;; *) # Older versions of the 11.00 compiler do not understand -b yet # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $CC understands -b" >&5 printf %s "checking if $CC understands -b... " >&6; } if test ${lt_cv_prog_compiler__b+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_prog_compiler__b=no save_LDFLAGS=$LDFLAGS LDFLAGS="$LDFLAGS -b" echo "$lt_simple_link_test_code" > conftest.$ac_ext if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then # The linker can only warn and ignore the option if not recognized # So say no if there are warnings if test -s conftest.err; then # Append any errors to the config.log. cat conftest.err 1>&5 $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 if diff conftest.exp conftest.er2 >/dev/null; then lt_cv_prog_compiler__b=yes fi else lt_cv_prog_compiler__b=yes fi fi $RM -r conftest* LDFLAGS=$save_LDFLAGS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler__b" >&5 printf "%s\n" "$lt_cv_prog_compiler__b" >&6; } if test yes = "$lt_cv_prog_compiler__b"; then archive_cmds='$CC -b $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags' else archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' fi ;; esac fi if test no = "$with_gnu_ld"; then hardcode_libdir_flag_spec='$wl+b $wl$libdir' hardcode_libdir_separator=: case $host_cpu in hppa*64*|ia64*) hardcode_direct=no hardcode_shlibpath_var=no ;; *) hardcode_direct=yes hardcode_direct_absolute=yes export_dynamic_flag_spec='$wl-E' # hardcode_minus_L: Not really in the search PATH, # but as the default location of the library. hardcode_minus_L=yes ;; esac fi ;; irix5* | irix6* | nonstopux*) if test yes = "$GCC"; then archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' # Try to use the -exported_symbol ld option, if it does not # work, assume that -exports_file does not work either and # implicitly export all symbols. # This should be the same for all languages, so no per-tag cache variable. { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the $host_os linker accepts -exported_symbol" >&5 printf %s "checking whether the $host_os linker accepts -exported_symbol... " >&6; } if test ${lt_cv_irix_exported_symbol+y} then : printf %s "(cached) " >&6 else case e in #( e) save_LDFLAGS=$LDFLAGS LDFLAGS="$LDFLAGS -shared $wl-exported_symbol ${wl}foo $wl-update_registry $wl/dev/null" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int foo (void) { return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : lt_cv_irix_exported_symbol=yes else case e in #( e) lt_cv_irix_exported_symbol=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LDFLAGS=$save_LDFLAGS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_irix_exported_symbol" >&5 printf "%s\n" "$lt_cv_irix_exported_symbol" >&6; } if test yes = "$lt_cv_irix_exported_symbol"; then archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations $wl-exports_file $wl$export_symbols -o $lib' fi else archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -exports_file $export_symbols -o $lib' fi archive_cmds_need_lc='no' hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' hardcode_libdir_separator=: inherit_rpath=yes link_all_deplibs=yes ;; linux*) case $cc_basename in tcc*) # Fabrice Bellard et al's Tiny C Compiler ld_shlibs=yes archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' ;; esac ;; netbsd*) if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out else archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF fi hardcode_libdir_flag_spec='-R$libdir' hardcode_direct=yes hardcode_shlibpath_var=no ;; newsos6) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_direct=yes hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' hardcode_libdir_separator=: hardcode_shlibpath_var=no ;; *nto* | *qnx*) ;; openbsd* | bitrig*) if test -f /usr/libexec/ld.so; then hardcode_direct=yes hardcode_shlibpath_var=no hardcode_direct_absolute=yes if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' archive_expsym_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags $wl-retain-symbols-file,$export_symbols' hardcode_libdir_flag_spec='$wl-rpath,$libdir' export_dynamic_flag_spec='$wl-E' else archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' hardcode_libdir_flag_spec='$wl-rpath,$libdir' fi else ld_shlibs=no fi ;; os2*) hardcode_libdir_flag_spec='-L$libdir' hardcode_minus_L=yes allow_undefined_flag=unsupported shrext_cmds=.dll archive_cmds='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ $ECHO EXPORTS >> $output_objdir/$libname.def~ emxexp $libobjs | $SED /"_DLL_InitTerm"/d >> $output_objdir/$libname.def~ $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ emximp -o $lib $output_objdir/$libname.def' archive_expsym_cmds='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ $ECHO EXPORTS >> $output_objdir/$libname.def~ prefix_cmds="$SED"~ if test EXPORTS = "`$SED 1q $export_symbols`"; then prefix_cmds="$prefix_cmds -e 1d"; fi~ prefix_cmds="$prefix_cmds -e \"s/^\(.*\)$/_\1/g\""~ cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~ $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ emximp -o $lib $output_objdir/$libname.def' old_archive_From_new_cmds='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def' enable_shared_with_static_runtimes=yes file_list_spec='@' ;; osf3*) if test yes = "$GCC"; then allow_undefined_flag=' $wl-expect_unresolved $wl\*' archive_cmds='$CC -shared$allow_undefined_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' else allow_undefined_flag=' -expect_unresolved \*' archive_cmds='$CC -shared$allow_undefined_flag $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' fi archive_cmds_need_lc='no' hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' hardcode_libdir_separator=: ;; osf4* | osf5*) # as osf3* with the addition of -msym flag if test yes = "$GCC"; then allow_undefined_flag=' $wl-expect_unresolved $wl\*' archive_cmds='$CC -shared$allow_undefined_flag $pic_flag $libobjs $deplibs $compiler_flags $wl-msym $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' else allow_undefined_flag=' -expect_unresolved \*' archive_cmds='$CC -shared$allow_undefined_flag $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' archive_expsym_cmds='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~ $CC -shared$allow_undefined_flag $wl-input $wl$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib~$RM $lib.exp' # Both c and cxx compiler support -rpath directly hardcode_libdir_flag_spec='-rpath $libdir' fi archive_cmds_need_lc='no' hardcode_libdir_separator=: ;; 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The import file would start with # the line '#! .'. This would cause the generated library to # depend on '.', always an invalid library. This was fixed in # development snapshots of GCC prior to 3.0. case $host_os in aix4 | aix4.[01] | aix4.[01].*) if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)' echo ' yes ' echo '#endif'; } | $CC -E - | $GREP yes > /dev/null; then : else can_build_shared=no fi ;; esac # Using Import Files as archive members, it is possible to support # filename-based versioning of shared library archives on AIX. While # this would work for both with and without runtime linking, it will # prevent static linking of such archives. So we do filename-based # shared library versioning with .so extension only, which is used # when both runtime linking and shared linking is enabled. # Unfortunately, runtime linking may impact performance, so we do # not want this to be the default eventually. Also, we use the # versioned .so libs for executables only if there is the -brtl # linker flag in LDFLAGS as well, or --with-aix-soname=svr4 only. # To allow for filename-based versioning support, we need to create # libNAME.so.V as an archive file, containing: # *) an Import File, referring to the versioned filename of the # archive as well as the shared archive member, telling the # bitwidth (32 or 64) of that shared object, and providing the # list of exported symbols of that shared object, eventually # decorated with the 'weak' keyword # *) the shared object with the F_LOADONLY flag set, to really avoid # it being seen by the linker. # At run time we better use the real file rather than another symlink, # but for link time we create the symlink libNAME.so -> libNAME.so.V case $with_aix_soname,$aix_use_runtimelinking in # AIX (on Power*) has no versioning support, so currently we cannot hardcode correct # soname into executable. Probably we can add versioning support to # collect2, so additional links can be useful in future. aix,yes) # traditional libtool dynamic_linker='AIX unversionable lib.so' # If using run time linking (on AIX 4.2 or later) use lib.so # instead of lib.a to let people know that these are not # typical AIX shared libraries. library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' ;; aix,no) # traditional AIX only dynamic_linker='AIX lib.a(lib.so.V)' # We preserve .a as extension for shared libraries through AIX4.2 # and later when we are not doing run time linking. library_names_spec='$libname$release.a $libname.a' soname_spec='$libname$release$shared_ext$major' ;; svr4,*) # full svr4 only dynamic_linker="AIX lib.so.V($shared_archive_member_spec.o)" library_names_spec='$libname$release$shared_ext$major $libname$shared_ext' # We do not specify a path in Import Files, so LIBPATH fires. shlibpath_overrides_runpath=yes ;; *,yes) # both, prefer svr4 dynamic_linker="AIX lib.so.V($shared_archive_member_spec.o), lib.a(lib.so.V)" library_names_spec='$libname$release$shared_ext$major $libname$shared_ext' # unpreferred sharedlib libNAME.a needs extra handling postinstall_cmds='test -n "$linkname" || linkname="$realname"~func_stripname "" ".so" "$linkname"~$install_shared_prog "$dir/$func_stripname_result.$libext" "$destdir/$func_stripname_result.$libext"~test -z "$tstripme" || test -z "$striplib" || $striplib "$destdir/$func_stripname_result.$libext"' postuninstall_cmds='for n in $library_names $old_library; do :; done~func_stripname "" ".so" "$n"~test "$func_stripname_result" = "$n" || func_append rmfiles " $odir/$func_stripname_result.$libext"' # We do not specify a path in Import Files, so LIBPATH fires. shlibpath_overrides_runpath=yes ;; *,no) # both, prefer aix dynamic_linker="AIX lib.a(lib.so.V), lib.so.V($shared_archive_member_spec.o)" library_names_spec='$libname$release.a $libname.a' soname_spec='$libname$release$shared_ext$major' # unpreferred sharedlib libNAME.so.V and symlink libNAME.so need extra handling postinstall_cmds='test -z "$dlname" || $install_shared_prog $dir/$dlname $destdir/$dlname~test -z "$tstripme" || test -z "$striplib" || $striplib $destdir/$dlname~test -n "$linkname" || linkname=$realname~func_stripname "" ".a" "$linkname"~(cd "$destdir" && $LN_S -f $dlname $func_stripname_result.so)' postuninstall_cmds='test -z "$dlname" || func_append rmfiles " $odir/$dlname"~for n in $old_library $library_names; do :; done~func_stripname "" ".a" "$n"~func_append rmfiles " $odir/$func_stripname_result.so"' ;; esac shlibpath_var=LIBPATH fi ;; amigaos*) case $host_cpu in powerpc) # Since July 2007 AmigaOS4 officially supports .so libraries. # When compiling the executable, add -use-dynld -Lsobjs: to the compileline. library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' ;; m68k) library_names_spec='$libname.ixlibrary $libname.a' # Create ${libname}_ixlibrary.a entries in /sys/libs. finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done' ;; esac ;; beos*) library_names_spec='$libname$shared_ext' dynamic_linker="$host_os ld.so" shlibpath_var=LIBRARY_PATH ;; bsdi[45]*) version_type=linux # correct to gnu/linux during the next big refactor need_version=no library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir' shlibpath_var=LD_LIBRARY_PATH sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib" sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib" # the default ld.so.conf also contains /usr/contrib/lib and # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow # libtool to hard-code these into programs ;; cygwin* | mingw* | pw32* | cegcc*) version_type=windows shrext_cmds=.dll need_version=no need_lib_prefix=no case $GCC,$cc_basename in yes,*) # gcc library_names_spec='$libname.dll.a' # DLL is installed to $(libdir)/../bin by postinstall_cmds postinstall_cmds='base_file=`basename \$file`~ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; echo \$dlname'\''`~ dldir=$destdir/`dirname \$dlpath`~ test -d \$dldir || mkdir -p \$dldir~ $install_prog $dir/$dlname \$dldir/$dlname~ chmod a+x \$dldir/$dlname~ if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then eval '\''$striplib \$dldir/$dlname'\'' || exit \$?; fi' postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~ dlpath=$dir/\$dldll~ $RM \$dlpath' shlibpath_overrides_runpath=yes case $host_os in cygwin*) # Cygwin DLLs use 'cyg' prefix rather than 'lib' soname_spec='`echo $libname | $SED -e 's/^lib/cyg/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api" ;; mingw* | cegcc*) # MinGW DLLs use traditional 'lib' prefix soname_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' ;; pw32*) # pw32 DLLs use 'pw' prefix rather than 'lib' library_names_spec='`echo $libname | $SED -e 's/^lib/pw/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' ;; esac dynamic_linker='Win32 ld.exe' ;; *,cl* | *,icl*) # Native MSVC or ICC libname_spec='$name' soname_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' library_names_spec='$libname.dll.lib' case $build_os in mingw*) sys_lib_search_path_spec= lt_save_ifs=$IFS IFS=';' for lt_path in $LIB do IFS=$lt_save_ifs # Let DOS variable expansion print the short 8.3 style file name. lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"` sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path" done IFS=$lt_save_ifs # Convert to MSYS style. sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'` ;; cygwin*) # Convert to unix form, then to dos form, then back to unix form # but this time dos style (no spaces!) so that the unix form looks # like /cygdrive/c/PROGRA~1:/cygdr... sys_lib_search_path_spec=`cygpath --path --unix "$LIB"` sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null` sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"` ;; *) sys_lib_search_path_spec=$LIB if $ECHO "$sys_lib_search_path_spec" | $GREP ';[c-zC-Z]:/' >/dev/null; then # It is most probably a Windows format PATH. sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'` else sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"` fi # FIXME: find the short name or the path components, as spaces are # common. (e.g. "Program Files" -> "PROGRA~1") ;; esac # DLL is installed to $(libdir)/../bin by postinstall_cmds postinstall_cmds='base_file=`basename \$file`~ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; echo \$dlname'\''`~ dldir=$destdir/`dirname \$dlpath`~ test -d \$dldir || mkdir -p \$dldir~ $install_prog $dir/$dlname \$dldir/$dlname' postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~ dlpath=$dir/\$dldll~ $RM \$dlpath' shlibpath_overrides_runpath=yes dynamic_linker='Win32 link.exe' ;; *) # Assume MSVC and ICC wrapper library_names_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext $libname.lib' dynamic_linker='Win32 ld.exe' ;; esac # FIXME: first we should search . and the directory the executable is in shlibpath_var=PATH ;; darwin* | rhapsody*) dynamic_linker="$host_os dyld" version_type=darwin need_lib_prefix=no need_version=no library_names_spec='$libname$release$major$shared_ext $libname$shared_ext' soname_spec='$libname$release$major$shared_ext' shlibpath_overrides_runpath=yes shlibpath_var=DYLD_LIBRARY_PATH shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`' sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib" sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib' ;; dgux*) version_type=linux # correct to gnu/linux during the next big refactor need_lib_prefix=no need_version=no library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' shlibpath_var=LD_LIBRARY_PATH ;; freebsd* | dragonfly* | midnightbsd*) # DragonFly does not have aout. When/if they implement a new # versioning mechanism, adjust this. if test -x /usr/bin/objformat; then objformat=`/usr/bin/objformat` else case $host_os in freebsd[23].*) objformat=aout ;; *) objformat=elf ;; esac fi version_type=freebsd-$objformat case $version_type in freebsd-elf*) library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' need_version=no need_lib_prefix=no ;; freebsd-*) library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' need_version=yes ;; esac shlibpath_var=LD_LIBRARY_PATH case $host_os in freebsd2.*) shlibpath_overrides_runpath=yes ;; freebsd3.[01]* | freebsdelf3.[01]*) shlibpath_overrides_runpath=yes hardcode_into_libs=yes ;; freebsd3.[2-9]* | freebsdelf3.[2-9]* | \ freebsd4.[0-5] | freebsdelf4.[0-5] | freebsd4.1.1 | freebsdelf4.1.1) shlibpath_overrides_runpath=no hardcode_into_libs=yes ;; *) # from 4.6 on, and DragonFly shlibpath_overrides_runpath=yes hardcode_into_libs=yes ;; esac ;; haiku*) version_type=linux # correct to gnu/linux during the next big refactor need_lib_prefix=no need_version=no dynamic_linker="$host_os runtime_loader" library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' shlibpath_var=LIBRARY_PATH shlibpath_overrides_runpath=no sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/system/lib' hardcode_into_libs=yes ;; hpux9* | hpux10* | hpux11*) # Give a soname corresponding to the major version so that dld.sl refuses to # link against other versions. version_type=sunos need_lib_prefix=no need_version=no case $host_cpu in ia64*) shrext_cmds='.so' hardcode_into_libs=yes dynamic_linker="$host_os dld.so" shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes # Unless +noenvvar is specified. library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' if test 32 = "$HPUX_IA64_MODE"; then sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib" sys_lib_dlsearch_path_spec=/usr/lib/hpux32 else sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64" sys_lib_dlsearch_path_spec=/usr/lib/hpux64 fi ;; hppa*64*) shrext_cmds='.sl' hardcode_into_libs=yes dynamic_linker="$host_os dld.sl" shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH shlibpath_overrides_runpath=yes # Unless +noenvvar is specified. library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64" sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec ;; *) shrext_cmds='.sl' dynamic_linker="$host_os dld.sl" shlibpath_var=SHLIB_PATH shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' ;; esac # HP-UX runs *really* slowly unless shared libraries are mode 555, ... postinstall_cmds='chmod 555 $lib' # or fails outright, so override atomically: install_override_mode=555 ;; interix[3-9]*) version_type=linux # correct to gnu/linux during the next big refactor need_lib_prefix=no need_version=no library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=no hardcode_into_libs=yes ;; irix5* | irix6* | nonstopux*) case $host_os in nonstopux*) version_type=nonstopux ;; *) if test yes = "$lt_cv_prog_gnu_ld"; then version_type=linux # correct to gnu/linux during the next big refactor else version_type=irix fi ;; esac need_lib_prefix=no need_version=no soname_spec='$libname$release$shared_ext$major' library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$release$shared_ext $libname$shared_ext' case $host_os in irix5* | nonstopux*) libsuff= shlibsuff= ;; *) case $LD in # libtool.m4 will add one of these switches to LD *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ") libsuff= shlibsuff= libmagic=32-bit;; *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ") libsuff=32 shlibsuff=N32 libmagic=N32;; *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ") libsuff=64 shlibsuff=64 libmagic=64-bit;; *) libsuff= shlibsuff= libmagic=never-match;; esac ;; esac shlibpath_var=LD_LIBRARY${shlibsuff}_PATH shlibpath_overrides_runpath=no sys_lib_search_path_spec="/usr/lib$libsuff /lib$libsuff /usr/local/lib$libsuff" sys_lib_dlsearch_path_spec="/usr/lib$libsuff /lib$libsuff" hardcode_into_libs=yes ;; # No shared lib support for Linux oldld, aout, or coff. linux*oldld* | linux*aout* | linux*coff*) dynamic_linker=no ;; linux*android*) version_type=none # Android doesn't support versioned libraries. need_lib_prefix=no need_version=no library_names_spec='$libname$release$shared_ext' soname_spec='$libname$release$shared_ext' finish_cmds= shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes # This implies no fast_install, which is unacceptable. # Some rework will be needed to allow for fast_install # before this can be enabled. hardcode_into_libs=yes dynamic_linker='Android linker' # Don't embed -rpath directories since the linker doesn't support them. hardcode_libdir_flag_spec='-L$libdir' ;; # This must be glibc/ELF. linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) version_type=linux # correct to gnu/linux during the next big refactor need_lib_prefix=no need_version=no library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=no # Some binutils ld are patched to set DT_RUNPATH if test ${lt_cv_shlibpath_overrides_runpath+y} then : printf %s "(cached) " >&6 else case e in #( e) lt_cv_shlibpath_overrides_runpath=no save_LDFLAGS=$LDFLAGS save_libdir=$libdir eval "libdir=/foo; wl=\"$lt_prog_compiler_wl\"; \ LDFLAGS=\"\$LDFLAGS $hardcode_libdir_flag_spec\"" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : if ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null then : lt_cv_shlibpath_overrides_runpath=yes fi fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LDFLAGS=$save_LDFLAGS libdir=$save_libdir ;; esac fi shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath # This implies no fast_install, which is unacceptable. # Some rework will be needed to allow for fast_install # before this can be enabled. hardcode_into_libs=yes # Add ABI-specific directories to the system library path. sys_lib_dlsearch_path_spec="/lib64 /usr/lib64 /lib /usr/lib" # Ideally, we could use ldconfig to report *all* directores which are # searched for libraries, however this is still not possible. Aside from not # being certain /sbin/ldconfig is available, command # 'ldconfig -N -X -v | grep ^/' on 64bit Fedora does not report /usr/lib64, # even though it is searched at run-time. Try to do the best guess by # appending ld.so.conf contents (and includes) to the search path. if test -f /etc/ld.so.conf; then lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '` sys_lib_dlsearch_path_spec="$sys_lib_dlsearch_path_spec $lt_ld_extra" fi # We used to test for /lib/ld.so.1 and disable shared libraries on # powerpc, because MkLinux only supported shared libraries with the # GNU dynamic linker. Since this was broken with cross compilers, # most powerpc-linux boxes support dynamic linking these days and # people can always --disable-shared, the test was removed, and we # assume the GNU/Linux dynamic linker is in use. dynamic_linker='GNU/Linux ld.so' ;; netbsd*) version_type=sunos need_lib_prefix=no need_version=no if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir' dynamic_linker='NetBSD (a.out) ld.so' else library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' dynamic_linker='NetBSD ld.elf_so' fi shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes hardcode_into_libs=yes ;; newsos6) version_type=linux # correct to gnu/linux during the next big refactor library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes ;; *nto* | *qnx*) version_type=qnx need_lib_prefix=no need_version=no library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=no hardcode_into_libs=yes dynamic_linker='ldqnx.so' ;; openbsd* | bitrig*) version_type=sunos sys_lib_dlsearch_path_spec=/usr/lib need_lib_prefix=no if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then need_version=no else need_version=yes fi library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes ;; os2*) libname_spec='$name' version_type=windows shrext_cmds=.dll need_version=no need_lib_prefix=no # OS/2 can only load a DLL with a base name of 8 characters or less. soname_spec='`test -n "$os2dllname" && libname="$os2dllname"; v=$($ECHO $release$versuffix | tr -d .-); n=$($ECHO $libname | cut -b -$((8 - ${#v})) | tr . _); $ECHO $n$v`$shared_ext' library_names_spec='${libname}_dll.$libext' dynamic_linker='OS/2 ld.exe' shlibpath_var=BEGINLIBPATH sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib" sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec postinstall_cmds='base_file=`basename \$file`~ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; $ECHO \$dlname'\''`~ dldir=$destdir/`dirname \$dlpath`~ test -d \$dldir || mkdir -p \$dldir~ $install_prog $dir/$dlname \$dldir/$dlname~ chmod a+x \$dldir/$dlname~ if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then eval '\''$striplib \$dldir/$dlname'\'' || exit \$?; fi' postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; $ECHO \$dlname'\''`~ dlpath=$dir/\$dldll~ $RM \$dlpath' ;; osf3* | osf4* | osf5*) version_type=osf need_lib_prefix=no need_version=no soname_spec='$libname$release$shared_ext$major' library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' shlibpath_var=LD_LIBRARY_PATH sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib" sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec ;; rdos*) dynamic_linker=no ;; solaris*) version_type=linux # correct to gnu/linux during the next big refactor need_lib_prefix=no need_version=no library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes hardcode_into_libs=yes # ldd complains unless libraries are executable postinstall_cmds='chmod +x $lib' ;; sunos4*) version_type=sunos library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes if test yes = "$with_gnu_ld"; then need_lib_prefix=no fi need_version=yes ;; sysv4 | sysv4.3*) version_type=linux # correct to gnu/linux during the next big refactor library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' shlibpath_var=LD_LIBRARY_PATH case $host_vendor in sni) shlibpath_overrides_runpath=no need_lib_prefix=no runpath_var=LD_RUN_PATH ;; siemens) need_lib_prefix=no ;; motorola) need_lib_prefix=no need_version=no shlibpath_overrides_runpath=no sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib' ;; esac ;; sysv4*MP*) if test -d /usr/nec; then version_type=linux # correct to gnu/linux during the next big refactor library_names_spec='$libname$shared_ext.$versuffix $libname$shared_ext.$major $libname$shared_ext' soname_spec='$libname$shared_ext.$major' shlibpath_var=LD_LIBRARY_PATH fi ;; sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) version_type=sco need_lib_prefix=no need_version=no library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes hardcode_into_libs=yes if test yes = "$with_gnu_ld"; then sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib' else sys_lib_search_path_spec='/usr/ccs/lib /usr/lib' case $host_os in sco3.2v5*) sys_lib_search_path_spec="$sys_lib_search_path_spec /lib" ;; esac fi sys_lib_dlsearch_path_spec='/usr/lib' ;; tpf*) # TPF is a cross-target only. Preferred cross-host = GNU/Linux. version_type=linux # correct to gnu/linux during the next big refactor need_lib_prefix=no need_version=no library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=no hardcode_into_libs=yes ;; uts4*) version_type=linux # correct to gnu/linux during the next big refactor library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' soname_spec='$libname$release$shared_ext$major' shlibpath_var=LD_LIBRARY_PATH ;; *) dynamic_linker=no ;; esac { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5 printf "%s\n" "$dynamic_linker" >&6; } test no = "$dynamic_linker" && can_build_shared=no variables_saved_for_relink="PATH $shlibpath_var $runpath_var" if test yes = "$GCC"; then variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH" fi if test set = "${lt_cv_sys_lib_search_path_spec+set}"; then sys_lib_search_path_spec=$lt_cv_sys_lib_search_path_spec fi if test set = "${lt_cv_sys_lib_dlsearch_path_spec+set}"; then sys_lib_dlsearch_path_spec=$lt_cv_sys_lib_dlsearch_path_spec fi # remember unaugmented sys_lib_dlsearch_path content for libtool script decls... configure_time_dlsearch_path=$sys_lib_dlsearch_path_spec # ... but it needs LT_SYS_LIBRARY_PATH munging for other configure-time code func_munge_path_list sys_lib_dlsearch_path_spec "$LT_SYS_LIBRARY_PATH" # to be used as default LT_SYS_LIBRARY_PATH value in generated libtool configure_time_lt_sys_library_path=$LT_SYS_LIBRARY_PATH { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5 printf %s "checking how to hardcode library paths into programs... " >&6; } hardcode_action= if test -n "$hardcode_libdir_flag_spec" || test -n "$runpath_var" || test yes = "$hardcode_automatic"; then # We can hardcode non-existent directories. if test no != "$hardcode_direct" && # If the only mechanism to avoid hardcoding is shlibpath_var, we # have to relink, otherwise we might link with an installed library # when we should be linking with a yet-to-be-installed one ## test no != "$_LT_TAGVAR(hardcode_shlibpath_var, )" && test no != "$hardcode_minus_L"; then # Linking always hardcodes the temporary library directory. hardcode_action=relink else # We can link without hardcoding, and we can hardcode nonexisting dirs. hardcode_action=immediate fi else # We cannot hardcode anything, or else we can only hardcode existing # directories. hardcode_action=unsupported fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $hardcode_action" >&5 printf "%s\n" "$hardcode_action" >&6; } if test relink = "$hardcode_action" || test yes = "$inherit_rpath"; then # Fast installation is not supported enable_fast_install=no elif test yes = "$shlibpath_overrides_runpath" || test no = "$enable_shared"; then # Fast installation is not necessary enable_fast_install=needless fi if test yes != "$enable_dlopen"; then enable_dlopen=unknown enable_dlopen_self=unknown enable_dlopen_self_static=unknown else lt_cv_dlopen=no lt_cv_dlopen_libs= case $host_os in beos*) lt_cv_dlopen=load_add_on lt_cv_dlopen_libs= lt_cv_dlopen_self=yes ;; mingw* | pw32* | cegcc*) lt_cv_dlopen=LoadLibrary lt_cv_dlopen_libs= ;; cygwin*) lt_cv_dlopen=dlopen lt_cv_dlopen_libs= ;; darwin*) # if libdl is installed we need to link against it { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5 printf %s "checking for dlopen in -ldl... " >&6; } if test ${ac_cv_lib_dl_dlopen+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-ldl $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char dlopen (void); int main (void) { return dlopen (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_dl_dlopen=yes else case e in #( e) ac_cv_lib_dl_dlopen=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5 printf "%s\n" "$ac_cv_lib_dl_dlopen" >&6; } if test "x$ac_cv_lib_dl_dlopen" = xyes then : lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-ldl else case e in #( e) lt_cv_dlopen=dyld lt_cv_dlopen_libs= lt_cv_dlopen_self=yes ;; esac fi ;; tpf*) # Don't try to run any link tests for TPF. We know it's impossible # because TPF is a cross-compiler, and we know how we open DSOs. lt_cv_dlopen=dlopen lt_cv_dlopen_libs= lt_cv_dlopen_self=no ;; *) ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load" if test "x$ac_cv_func_shl_load" = xyes then : lt_cv_dlopen=shl_load else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5 printf %s "checking for shl_load in -ldld... " >&6; } if test ${ac_cv_lib_dld_shl_load+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-ldld $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char shl_load (void); int main (void) { return shl_load (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_dld_shl_load=yes else case e in #( e) ac_cv_lib_dld_shl_load=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5 printf "%s\n" "$ac_cv_lib_dld_shl_load" >&6; } if test "x$ac_cv_lib_dld_shl_load" = xyes then : lt_cv_dlopen=shl_load lt_cv_dlopen_libs=-ldld else case e in #( e) ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen" if test "x$ac_cv_func_dlopen" = xyes then : lt_cv_dlopen=dlopen else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5 printf %s "checking for dlopen in -ldl... " >&6; } if test ${ac_cv_lib_dl_dlopen+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-ldl $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char dlopen (void); int main (void) { return dlopen (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_dl_dlopen=yes else case e in #( e) ac_cv_lib_dl_dlopen=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5 printf "%s\n" "$ac_cv_lib_dl_dlopen" >&6; } if test "x$ac_cv_lib_dl_dlopen" = xyes then : lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-ldl else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5 printf %s "checking for dlopen in -lsvld... " >&6; } if test ${ac_cv_lib_svld_dlopen+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-lsvld $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char dlopen (void); int main (void) { return dlopen (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_svld_dlopen=yes else case e in #( e) ac_cv_lib_svld_dlopen=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5 printf "%s\n" "$ac_cv_lib_svld_dlopen" >&6; } if test "x$ac_cv_lib_svld_dlopen" = xyes then : lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-lsvld else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5 printf %s "checking for dld_link in -ldld... " >&6; } if test ${ac_cv_lib_dld_dld_link+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-ldld $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char dld_link (void); int main (void) { return dld_link (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_dld_dld_link=yes else case e in #( e) ac_cv_lib_dld_dld_link=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5 printf "%s\n" "$ac_cv_lib_dld_dld_link" >&6; } if test "x$ac_cv_lib_dld_dld_link" = xyes then : lt_cv_dlopen=dld_link lt_cv_dlopen_libs=-ldld fi ;; esac fi ;; esac fi ;; esac fi ;; esac fi ;; esac fi ;; esac if test no = "$lt_cv_dlopen"; then enable_dlopen=no else enable_dlopen=yes fi case $lt_cv_dlopen in dlopen) save_CPPFLAGS=$CPPFLAGS test yes = "$ac_cv_header_dlfcn_h" && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H" save_LDFLAGS=$LDFLAGS wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\" save_LIBS=$LIBS LIBS="$lt_cv_dlopen_libs $LIBS" { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5 printf %s "checking whether a program can dlopen itself... " >&6; } if test ${lt_cv_dlopen_self+y} then : printf %s "(cached) " >&6 else case e in #( e) if test yes = "$cross_compiling"; then : lt_cv_dlopen_self=cross else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF #line $LINENO "configure" #include "confdefs.h" #if HAVE_DLFCN_H #include #endif #include #ifdef RTLD_GLOBAL # define LT_DLGLOBAL RTLD_GLOBAL #else # ifdef DL_GLOBAL # define LT_DLGLOBAL DL_GLOBAL # else # define LT_DLGLOBAL 0 # endif #endif /* We may have to define LT_DLLAZY_OR_NOW in the command line if we find out it does not work in some platform. */ #ifndef LT_DLLAZY_OR_NOW # ifdef RTLD_LAZY # define LT_DLLAZY_OR_NOW RTLD_LAZY # else # ifdef DL_LAZY # define LT_DLLAZY_OR_NOW DL_LAZY # else # ifdef RTLD_NOW # define LT_DLLAZY_OR_NOW RTLD_NOW # else # ifdef DL_NOW # define LT_DLLAZY_OR_NOW DL_NOW # else # define LT_DLLAZY_OR_NOW 0 # endif # endif # endif # endif #endif /* When -fvisibility=hidden is used, assume the code has been annotated correspondingly for the symbols needed. */ #if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)) int fnord () __attribute__((visibility("default"))); #endif int fnord () { return 42; } int main () { void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW); int status = $lt_dlunknown; if (self) { if (dlsym (self,"fnord")) status = $lt_dlno_uscore; else { if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore; else puts (dlerror ()); } /* dlclose (self); */ } else puts (dlerror ()); return status; } _LT_EOF if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5 (eval $ac_link) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } && test -s "conftest$ac_exeext" 2>/dev/null; then (./conftest; exit; ) >&5 2>/dev/null lt_status=$? case x$lt_status in x$lt_dlno_uscore) lt_cv_dlopen_self=yes ;; x$lt_dlneed_uscore) lt_cv_dlopen_self=yes ;; x$lt_dlunknown|x*) lt_cv_dlopen_self=no ;; esac else : # compilation failed lt_cv_dlopen_self=no fi fi rm -fr conftest* ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self" >&5 printf "%s\n" "$lt_cv_dlopen_self" >&6; } if test yes = "$lt_cv_dlopen_self"; then wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\" { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5 printf %s "checking whether a statically linked program can dlopen itself... " >&6; } if test ${lt_cv_dlopen_self_static+y} then : printf %s "(cached) " >&6 else case e in #( e) if test yes = "$cross_compiling"; then : lt_cv_dlopen_self_static=cross else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF #line $LINENO "configure" #include "confdefs.h" #if HAVE_DLFCN_H #include #endif #include #ifdef RTLD_GLOBAL # define LT_DLGLOBAL RTLD_GLOBAL #else # ifdef DL_GLOBAL # define LT_DLGLOBAL DL_GLOBAL # else # define LT_DLGLOBAL 0 # endif #endif /* We may have to define LT_DLLAZY_OR_NOW in the command line if we find out it does not work in some platform. */ #ifndef LT_DLLAZY_OR_NOW # ifdef RTLD_LAZY # define LT_DLLAZY_OR_NOW RTLD_LAZY # else # ifdef DL_LAZY # define LT_DLLAZY_OR_NOW DL_LAZY # else # ifdef RTLD_NOW # define LT_DLLAZY_OR_NOW RTLD_NOW # else # ifdef DL_NOW # define LT_DLLAZY_OR_NOW DL_NOW # else # define LT_DLLAZY_OR_NOW 0 # endif # endif # endif # endif #endif /* When -fvisibility=hidden is used, assume the code has been annotated correspondingly for the symbols needed. */ #if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)) int fnord () __attribute__((visibility("default"))); #endif int fnord () { return 42; } int main () { void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW); int status = $lt_dlunknown; if (self) { if (dlsym (self,"fnord")) status = $lt_dlno_uscore; else { if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore; else puts (dlerror ()); } /* dlclose (self); */ } else puts (dlerror ()); return status; } _LT_EOF if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5 (eval $ac_link) 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } && test -s "conftest$ac_exeext" 2>/dev/null; then (./conftest; exit; ) >&5 2>/dev/null lt_status=$? case x$lt_status in x$lt_dlno_uscore) lt_cv_dlopen_self_static=yes ;; x$lt_dlneed_uscore) lt_cv_dlopen_self_static=yes ;; x$lt_dlunknown|x*) lt_cv_dlopen_self_static=no ;; esac else : # compilation failed lt_cv_dlopen_self_static=no fi fi rm -fr conftest* ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self_static" >&5 printf "%s\n" "$lt_cv_dlopen_self_static" >&6; } fi CPPFLAGS=$save_CPPFLAGS LDFLAGS=$save_LDFLAGS LIBS=$save_LIBS ;; esac case $lt_cv_dlopen_self in yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;; *) enable_dlopen_self=unknown ;; esac case $lt_cv_dlopen_self_static in yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;; *) enable_dlopen_self_static=unknown ;; esac fi striplib= old_striplib= { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5 printf %s "checking whether stripping libraries is possible... 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"no acceptable sed could be found in \$PATH" "$LINENO" 5 fi else ac_cv_path_SED=$SED fi ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5 printf "%s\n" "$ac_cv_path_SED" >&6; } SED="$ac_cv_path_SED" rm -f conftest.sed for ac_prog in grealpath realpath do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... 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" >&6; } if test ${ac_cv_prog_CC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_CC="${ac_tool_prefix}gcc" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi CC=$ac_cv_prog_CC if test -n "$CC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 printf "%s\n" "$CC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_CC"; then ac_ct_CC=$CC # Extract the first word of "gcc", so it can be a program name with args. set dummy gcc; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_CC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_CC"; then ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_CC="gcc" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_CC=$ac_cv_prog_ac_ct_CC if test -n "$ac_ct_CC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 printf "%s\n" "$ac_ct_CC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_CC" = x; then CC="" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac CC=$ac_ct_CC fi else CC="$ac_cv_prog_CC" fi if test -z "$CC"; then if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args. set dummy ${ac_tool_prefix}cc; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_CC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_CC="${ac_tool_prefix}cc" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi CC=$ac_cv_prog_CC if test -n "$CC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 printf "%s\n" "$CC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi fi if test -z "$CC"; then # Extract the first word of "cc", so it can be a program name with args. set dummy cc; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_CC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else ac_prog_rejected=no as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then if test "$as_dir$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then ac_prog_rejected=yes continue fi ac_cv_prog_CC="cc" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS if test $ac_prog_rejected = yes; then # We found a bogon in the path, so make sure we never use it. set dummy $ac_cv_prog_CC shift if test $# != 0; then # We chose a different compiler from the bogus one. # However, it has the same basename, so the bogon will be chosen # first if we set CC to just the basename; use the full file name. shift ac_cv_prog_CC="$as_dir$ac_word${1+' '}$@" fi fi fi ;; esac fi CC=$ac_cv_prog_CC if test -n "$CC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 printf "%s\n" "$CC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$CC"; then if test -n "$ac_tool_prefix"; then for ac_prog in cl.exe do # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. set dummy $ac_tool_prefix$ac_prog; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_CC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_CC="$ac_tool_prefix$ac_prog" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi CC=$ac_cv_prog_CC if test -n "$CC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 printf "%s\n" "$CC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi test -n "$CC" && break done fi if test -z "$CC"; then ac_ct_CC=$CC for ac_prog in cl.exe do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_CC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_CC"; then ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_CC="$ac_prog" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_CC=$ac_cv_prog_ac_ct_CC if test -n "$ac_ct_CC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 printf "%s\n" "$ac_ct_CC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi test -n "$ac_ct_CC" && break done if test "x$ac_ct_CC" = x; then CC="" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac CC=$ac_ct_CC fi fi fi if test -z "$CC"; then if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}clang", so it can be a program name with args. set dummy ${ac_tool_prefix}clang; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_CC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_CC="${ac_tool_prefix}clang" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi CC=$ac_cv_prog_CC if test -n "$CC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 printf "%s\n" "$CC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_CC"; then ac_ct_CC=$CC # Extract the first word of "clang", so it can be a program name with args. set dummy clang; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_CC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_CC"; then ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_CC="clang" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_CC=$ac_cv_prog_ac_ct_CC if test -n "$ac_ct_CC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 printf "%s\n" "$ac_ct_CC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_CC" = x; then CC="" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac CC=$ac_ct_CC fi else CC="$ac_cv_prog_CC" fi fi test -z "$CC" && { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;} as_fn_error $? "no acceptable C compiler found in \$PATH See 'config.log' for more details" "$LINENO" 5; } # Provide some information about the compiler. printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5 set X $ac_compile ac_compiler=$2 for ac_option in --version -v -V -qversion -version; do { { ac_try="$ac_compiler $ac_option >&5" case "(($ac_try" in *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; *) ac_try_echo=$ac_try;; esac eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" printf "%s\n" "$ac_try_echo"; } >&5 (eval "$ac_compiler $ac_option >&5") 2>conftest.err ac_status=$? if test -s conftest.err; then sed '10a\ ... rest of stderr output deleted ... 10q' conftest.err >conftest.er1 cat conftest.er1 >&5 fi rm -f conftest.er1 conftest.err printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } done { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports GNU C" >&5 printf %s "checking whether the compiler supports GNU C... " >&6; } if test ${ac_cv_c_compiler_gnu+y} then : printf %s "(cached) " >&6 else case e in #( e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { #ifndef __GNUC__ choke me #endif ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO" then : ac_compiler_gnu=yes else case e in #( e) ac_compiler_gnu=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ac_cv_c_compiler_gnu=$ac_compiler_gnu ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5 printf "%s\n" "$ac_cv_c_compiler_gnu" >&6; } ac_compiler_gnu=$ac_cv_c_compiler_gnu if test $ac_compiler_gnu = yes; then GCC=yes else GCC= fi ac_test_CFLAGS=${CFLAGS+y} ac_save_CFLAGS=$CFLAGS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5 printf %s "checking whether $CC accepts -g... " >&6; } if test ${ac_cv_prog_cc_g+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_save_c_werror_flag=$ac_c_werror_flag ac_c_werror_flag=yes ac_cv_prog_cc_g=no CFLAGS="-g" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO" then : ac_cv_prog_cc_g=yes else case e in #( e) CFLAGS="" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO" then : else case e in #( e) ac_c_werror_flag=$ac_save_c_werror_flag CFLAGS="-g" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO" then : ac_cv_prog_cc_g=yes fi rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ac_c_werror_flag=$ac_save_c_werror_flag ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5 printf "%s\n" "$ac_cv_prog_cc_g" >&6; } if test $ac_test_CFLAGS; then CFLAGS=$ac_save_CFLAGS elif test $ac_cv_prog_cc_g = yes; then if test "$GCC" = yes; then CFLAGS="-g -O2" else CFLAGS="-g" fi else if test "$GCC" = yes; then CFLAGS="-O2" else CFLAGS= fi fi ac_prog_cc_stdc=no if test x$ac_prog_cc_stdc = xno then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C11 features" >&5 printf %s "checking for $CC option to enable C11 features... " >&6; } if test ${ac_cv_prog_cc_c11+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_cv_prog_cc_c11=no ac_save_CC=$CC cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ $ac_c_conftest_c11_program _ACEOF for ac_arg in '' -std=gnu11 do CC="$ac_save_CC $ac_arg" if ac_fn_c_try_compile "$LINENO" then : ac_cv_prog_cc_c11=$ac_arg fi rm -f core conftest.err conftest.$ac_objext conftest.beam test "x$ac_cv_prog_cc_c11" != "xno" && break done rm -f conftest.$ac_ext CC=$ac_save_CC ;; esac fi if test "x$ac_cv_prog_cc_c11" = xno then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 printf "%s\n" "unsupported" >&6; } else case e in #( e) if test "x$ac_cv_prog_cc_c11" = x then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 printf "%s\n" "none needed" >&6; } else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5 printf "%s\n" "$ac_cv_prog_cc_c11" >&6; } CC="$CC $ac_cv_prog_cc_c11" ;; esac fi ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11 ac_prog_cc_stdc=c11 ;; esac fi fi if test x$ac_prog_cc_stdc = xno then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5 printf %s "checking for $CC option to enable C99 features... " >&6; } if test ${ac_cv_prog_cc_c99+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_cv_prog_cc_c99=no ac_save_CC=$CC cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ $ac_c_conftest_c99_program _ACEOF for ac_arg in '' -std=gnu99 -std=c99 -c99 -qlanglvl=extc1x -qlanglvl=extc99 -AC99 -D_STDC_C99= do CC="$ac_save_CC $ac_arg" if ac_fn_c_try_compile "$LINENO" then : ac_cv_prog_cc_c99=$ac_arg fi rm -f core conftest.err conftest.$ac_objext conftest.beam test "x$ac_cv_prog_cc_c99" != "xno" && break done rm -f conftest.$ac_ext CC=$ac_save_CC ;; esac fi if test "x$ac_cv_prog_cc_c99" = xno then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 printf "%s\n" "unsupported" >&6; } else case e in #( e) if test "x$ac_cv_prog_cc_c99" = x then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 printf "%s\n" "none needed" >&6; } else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5 printf "%s\n" "$ac_cv_prog_cc_c99" >&6; } CC="$CC $ac_cv_prog_cc_c99" ;; esac fi ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99 ac_prog_cc_stdc=c99 ;; esac fi fi if test x$ac_prog_cc_stdc = xno then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5 printf %s "checking for $CC option to enable C89 features... 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Now check whether nonexistent headers # can be detected and how. cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include _ACEOF if ac_fn_c_try_cpp "$LINENO" then : # Broken: success on invalid input. continue else case e in #( e) # Passes both tests. ac_preproc_ok=: break ;; esac fi rm -f conftest.err conftest.i conftest.$ac_ext done # Because of 'break', _AC_PREPROC_IFELSE's cleaning code was skipped. rm -f conftest.i conftest.err conftest.$ac_ext if $ac_preproc_ok then : break fi done ac_cv_prog_CPP=$CPP ;; esac fi CPP=$ac_cv_prog_CPP else ac_cv_prog_CPP=$CPP fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5 printf "%s\n" "$CPP" >&6; } ac_preproc_ok=false for ac_c_preproc_warn_flag in '' yes do # Use a header file that comes with gcc, so configuring glibc # with a fresh cross-compiler works. # On the NeXT, cc -E runs the code through the compiler's parser, # not just through cpp. "Syntax error" is here to catch this case. cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include Syntax error _ACEOF if ac_fn_c_try_cpp "$LINENO" then : else case e in #( e) # Broken: fails on valid input. continue ;; esac fi rm -f conftest.err conftest.i conftest.$ac_ext # OK, works on sane cases. Now check whether nonexistent headers # can be detected and how. cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include _ACEOF if ac_fn_c_try_cpp "$LINENO" then : # Broken: success on invalid input. continue else case e in #( e) # Passes both tests. ac_preproc_ok=: break ;; esac fi rm -f conftest.err conftest.i conftest.$ac_ext done # Because of 'break', _AC_PREPROC_IFELSE's cleaning code was skipped. rm -f conftest.i conftest.err conftest.$ac_ext if $ac_preproc_ok then : else case e in #( e) { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;} as_fn_error $? "C preprocessor \"$CPP\" fails sanity check See 'config.log' for more details" "$LINENO" 5; } ;; esac fi ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' ac_compiler_gnu=$ac_cv_c_compiler_gnu if test "$ac_prog_cc_stdc" != no; then printf "%s\n" "#define PROTOTYPES 1" >>confdefs.h printf "%s\n" "#define __PROTOTYPES 1" >>confdefs.h fi test "x$U" != "x" && as_fn_error $? "Compiler not ANSI compliant" "$LINENO" 5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for egrep -e" >&5 printf %s "checking for egrep -e... 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Items with a "," contain both # C compiler flags (before ",") and linker flags (after ","). Other items # starting with a "-" are C compiler flags, and remaining items are # library names, except for "none" which indicates that we try without # any flags at all, and "pthread-config" which is a program returning # the flags for the Pth emulation library. ax_pthread_flags="pthreads none -Kthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" # The ordering *is* (sometimes) important. Some notes on the # individual items follow: # pthreads: AIX (must check this before -lpthread) # none: in case threads are in libc; should be tried before -Kthread and # other compiler flags to prevent continual compiler warnings # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h) # -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64 # (Note: HP C rejects this with "bad form for `-t' option") # -pthreads: Solaris/gcc (Note: HP C also rejects) # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it # doesn't hurt to check since this sometimes defines pthreads and # -D_REENTRANT too), HP C (must be checked before -lpthread, which # is present but should not be used directly; and before -mthreads, # because the compiler interprets this as "-mt" + "-hreads") # -mthreads: Mingw32/gcc, Lynx/gcc # pthread: Linux, etcetera # --thread-safe: KAI C++ # pthread-config: use pthread-config program (for GNU Pth library) case $host_os in freebsd*) # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) # lthread: LinuxThreads port on FreeBSD (also preferred to -pthread) ax_pthread_flags="-kthread lthread $ax_pthread_flags" ;; hpux*) # From the cc(1) man page: "[-mt] Sets various -D flags to enable # multi-threading and also sets -lpthread." ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags" ;; openedition*) # IBM z/OS requires a feature-test macro to be defined in order to # enable POSIX threads at all, so give the user a hint if this is # not set. (We don't define these ourselves, as they can affect # other portions of the system API in unpredictable ways.) cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ # if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS) AX_PTHREAD_ZOS_MISSING # endif _ACEOF if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | $EGREP_TRADITIONAL "AX_PTHREAD_ZOS_MISSING" >/dev/null 2>&1 then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support." >&5 printf "%s\n" "$as_me: WARNING: IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support." >&2;} fi rm -rf conftest* ;; solaris*) # On Solaris (at least, for some versions), libc contains stubbed # (non-functional) versions of the pthreads routines, so link-based # tests will erroneously succeed. (N.B.: The stubs are missing # pthread_cleanup_push, or rather a function called by this macro, # so we could check for that, but who knows whether they'll stub # that too in a future libc.) So we'll check first for the # standard Solaris way of linking pthreads (-mt -lpthread). ax_pthread_flags="-mt,-lpthread pthread $ax_pthread_flags" ;; esac # Are we compiling with Clang? { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC is Clang" >&5 printf %s "checking whether $CC is Clang... " >&6; } if test ${ax_cv_PTHREAD_CLANG+y} then : printf %s "(cached) " >&6 else case e in #( e) ax_cv_PTHREAD_CLANG=no # Note that Autoconf sets GCC=yes for Clang as well as GCC if test "x$GCC" = "xyes"; then cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Note: Clang 2.7 lacks __clang_[a-z]+__ */ # if defined(__clang__) && defined(__llvm__) AX_PTHREAD_CC_IS_CLANG # endif _ACEOF if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | $EGREP_TRADITIONAL "AX_PTHREAD_CC_IS_CLANG" >/dev/null 2>&1 then : ax_cv_PTHREAD_CLANG=yes fi rm -rf conftest* fi ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_CLANG" >&5 printf "%s\n" "$ax_cv_PTHREAD_CLANG" >&6; } ax_pthread_clang="$ax_cv_PTHREAD_CLANG" # GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC) # Note that for GCC and Clang -pthread generally implies -lpthread, # except when -nostdlib is passed. # This is problematic using libtool to build C++ shared libraries with pthread: # [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25460 # [2] https://bugzilla.redhat.com/show_bug.cgi?id=661333 # [3] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=468555 # To solve this, first try -pthread together with -lpthread for GCC if test "x$GCC" = "xyes" then : ax_pthread_flags="-pthread,-lpthread -pthread -pthreads $ax_pthread_flags" fi # Clang takes -pthread (never supported any other flag), but we'll try with -lpthread first if test "x$ax_pthread_clang" = "xyes" then : ax_pthread_flags="-pthread,-lpthread -pthread" fi # The presence of a feature test macro requesting re-entrant function # definitions is, on some systems, a strong hint that pthreads support is # correctly enabled case $host_os in darwin* | hpux* | linux* | osf* | solaris*) ax_pthread_check_macro="_REENTRANT" ;; aix*) ax_pthread_check_macro="_THREAD_SAFE" ;; *) ax_pthread_check_macro="--" ;; esac if test "x$ax_pthread_check_macro" = "x--" then : ax_pthread_check_cond=0 else case e in #( e) ax_pthread_check_cond="!defined($ax_pthread_check_macro)" ;; esac fi if test "x$ax_pthread_ok" = "xno"; then for ax_pthread_try_flag in $ax_pthread_flags; do case $ax_pthread_try_flag in none) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthreads work without any flags" >&5 printf %s "checking whether pthreads work without any flags... " >&6; } ;; *,*) PTHREAD_CFLAGS=`echo $ax_pthread_try_flag | sed "s/^\(.*\),\(.*\)$/\1/"` PTHREAD_LIBS=`echo $ax_pthread_try_flag | sed "s/^\(.*\),\(.*\)$/\2/"` { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthreads work with \"$PTHREAD_CFLAGS\" and \"$PTHREAD_LIBS\"" >&5 printf %s "checking whether pthreads work with \"$PTHREAD_CFLAGS\" and \"$PTHREAD_LIBS\"... " >&6; } ;; -*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthreads work with $ax_pthread_try_flag" >&5 printf %s "checking whether pthreads work with $ax_pthread_try_flag... " >&6; } PTHREAD_CFLAGS="$ax_pthread_try_flag" ;; pthread-config) # Extract the first word of "pthread-config", so it can be a program name with args. set dummy pthread-config; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ax_pthread_config+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ax_pthread_config"; then ac_cv_prog_ax_pthread_config="$ax_pthread_config" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ax_pthread_config="yes" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS test -z "$ac_cv_prog_ax_pthread_config" && ac_cv_prog_ax_pthread_config="no" fi ;; esac fi ax_pthread_config=$ac_cv_prog_ax_pthread_config if test -n "$ax_pthread_config"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_pthread_config" >&5 printf "%s\n" "$ax_pthread_config" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ax_pthread_config" = "xno" then : continue fi PTHREAD_CFLAGS="`pthread-config --cflags`" PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" ;; *) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for the pthreads library -l$ax_pthread_try_flag" >&5 printf %s "checking for the pthreads library -l$ax_pthread_try_flag... " >&6; } PTHREAD_LIBS="-l$ax_pthread_try_flag" ;; esac ax_pthread_save_CFLAGS="$CFLAGS" ax_pthread_save_LIBS="$LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" LIBS="$PTHREAD_LIBS $LIBS" # Check for various functions. We must include pthread.h, # since some functions may be macros. (On the Sequent, we # need a special flag -Kthread to make this header compile.) # We check for pthread_join because it is in -lpthread on IRIX # while pthread_create is in libc. We check for pthread_attr_init # due to DEC craziness with -lpthreads. We check for # pthread_cleanup_push because it is one of the few pthread # functions on Solaris that doesn't have a non-functional libc stub. # We try pthread_create on general principles. cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include # if $ax_pthread_check_cond # error "$ax_pthread_check_macro must be defined" # endif static void *some_global = NULL; static void routine(void *a) { /* To avoid any unused-parameter or unused-but-set-parameter warning. */ some_global = a; } static void *start_routine(void *a) { return a; } int main (void) { pthread_t th; pthread_attr_t attr; pthread_create(&th, 0, start_routine, 0); pthread_join(th, 0); pthread_attr_init(&attr); pthread_cleanup_push(routine, 0); pthread_cleanup_pop(0) /* ; */ ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ax_pthread_ok=yes fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext CFLAGS="$ax_pthread_save_CFLAGS" LIBS="$ax_pthread_save_LIBS" { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_pthread_ok" >&5 printf "%s\n" "$ax_pthread_ok" >&6; } if test "x$ax_pthread_ok" = "xyes" then : break fi PTHREAD_LIBS="" PTHREAD_CFLAGS="" done fi # Clang needs special handling, because older versions handle the -pthread # option in a rather... idiosyncratic way if test "x$ax_pthread_clang" = "xyes"; then # Clang takes -pthread; it has never supported any other flag # (Note 1: This will need to be revisited if a system that Clang # supports has POSIX threads in a separate library. This tends not # to be the way of modern systems, but it's conceivable.) # (Note 2: On some systems, notably Darwin, -pthread is not needed # to get POSIX threads support; the API is always present and # active. We could reasonably leave PTHREAD_CFLAGS empty. But # -pthread does define _REENTRANT, and while the Darwin headers # ignore this macro, third-party headers might not.) # However, older versions of Clang make a point of warning the user # that, in an invocation where only linking and no compilation is # taking place, the -pthread option has no effect ("argument unused # during compilation"). They expect -pthread to be passed in only # when source code is being compiled. # # Problem is, this is at odds with the way Automake and most other # C build frameworks function, which is that the same flags used in # compilation (CFLAGS) are also used in linking. Many systems # supported by AX_PTHREAD require exactly this for POSIX threads # support, and in fact it is often not straightforward to specify a # flag that is used only in the compilation phase and not in # linking. Such a scenario is extremely rare in practice. # # Even though use of the -pthread flag in linking would only print # a warning, this can be a nuisance for well-run software projects # that build with -Werror. So if the active version of Clang has # this misfeature, we search for an option to squash it. { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether Clang needs flag to prevent \"argument unused\" warning when linking with -pthread" >&5 printf %s "checking whether Clang needs flag to prevent \"argument unused\" warning when linking with -pthread... " >&6; } if test ${ax_cv_PTHREAD_CLANG_NO_WARN_FLAG+y} then : printf %s "(cached) " >&6 else case e in #( e) ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown # Create an alternate version of $ac_link that compiles and # links in two steps (.c -> .o, .o -> exe) instead of one # (.c -> exe), because the warning occurs only in the second # step ax_pthread_save_ac_link="$ac_link" ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g' ax_pthread_link_step=`printf "%s\n" "$ac_link" | sed "$ax_pthread_sed"` ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)" ax_pthread_save_CFLAGS="$CFLAGS" for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do if test "x$ax_pthread_try" = "xunknown" then : break fi CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS" ac_link="$ax_pthread_save_ac_link" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main(void){return 0;} _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_link="$ax_pthread_2step_ac_link" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main(void){return 0;} _ACEOF if ac_fn_c_try_link "$LINENO" then : break fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext done ac_link="$ax_pthread_save_ac_link" CFLAGS="$ax_pthread_save_CFLAGS" if test "x$ax_pthread_try" = "x" then : ax_pthread_try=no fi ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try" ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" >&5 printf "%s\n" "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" >&6; } case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in no | unknown) ;; *) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;; esac fi # $ax_pthread_clang = yes # Various other checks: if test "x$ax_pthread_ok" = "xyes"; then ax_pthread_save_CFLAGS="$CFLAGS" ax_pthread_save_LIBS="$LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" LIBS="$PTHREAD_LIBS $LIBS" # Detect AIX lossage: JOINABLE attribute is called UNDETACHED. { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for joinable pthread attribute" >&5 printf %s "checking for joinable pthread attribute... " >&6; } if test ${ax_cv_PTHREAD_JOINABLE_ATTR+y} then : printf %s "(cached) " >&6 else case e in #( e) ax_cv_PTHREAD_JOINABLE_ATTR=unknown for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include int main (void) { int attr = $ax_pthread_attr; return attr /* ; */ ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext done ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_JOINABLE_ATTR" >&5 printf "%s\n" "$ax_cv_PTHREAD_JOINABLE_ATTR" >&6; } if test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \ test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \ test "x$ax_pthread_joinable_attr_defined" != "xyes" then : printf "%s\n" "#define PTHREAD_CREATE_JOINABLE $ax_cv_PTHREAD_JOINABLE_ATTR" >>confdefs.h ax_pthread_joinable_attr_defined=yes fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether more special flags are required for pthreads" >&5 printf %s "checking whether more special flags are required for pthreads... " >&6; } if test ${ax_cv_PTHREAD_SPECIAL_FLAGS+y} then : printf %s "(cached) " >&6 else case e in #( e) ax_cv_PTHREAD_SPECIAL_FLAGS=no case $host_os in solaris*) ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS" ;; esac ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_SPECIAL_FLAGS" >&5 printf "%s\n" "$ax_cv_PTHREAD_SPECIAL_FLAGS" >&6; } if test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \ test "x$ax_pthread_special_flags_added" != "xyes" then : PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS" ax_pthread_special_flags_added=yes fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for PTHREAD_PRIO_INHERIT" >&5 printf %s "checking for PTHREAD_PRIO_INHERIT... " >&6; } if test ${ax_cv_PTHREAD_PRIO_INHERIT+y} then : printf %s "(cached) " >&6 else case e in #( e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include int main (void) { int i = PTHREAD_PRIO_INHERIT; return i; ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ax_cv_PTHREAD_PRIO_INHERIT=yes else case e in #( e) ax_cv_PTHREAD_PRIO_INHERIT=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_PTHREAD_PRIO_INHERIT" >&5 printf "%s\n" "$ax_cv_PTHREAD_PRIO_INHERIT" >&6; } if test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \ test "x$ax_pthread_prio_inherit_defined" != "xyes" then : printf "%s\n" "#define HAVE_PTHREAD_PRIO_INHERIT 1" >>confdefs.h ax_pthread_prio_inherit_defined=yes fi CFLAGS="$ax_pthread_save_CFLAGS" LIBS="$ax_pthread_save_LIBS" # More AIX lossage: compile with *_r variant if test "x$GCC" != "xyes"; then case $host_os in aix*) case "x/$CC" in #( x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6) : #handle absolute path differently from PATH based program lookup case "x$CC" in #( x/*) : if as_fn_executable_p ${CC}_r then : PTHREAD_CC="${CC}_r" fi if test "x${CXX}" != "x" then : if as_fn_executable_p ${CXX}_r then : PTHREAD_CXX="${CXX}_r" fi fi ;; #( *) : for ac_prog in ${CC}_r do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... 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esac fi shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath # This implies no fast_install, which is unacceptable. # Some rework will be needed to allow for fast_install # before this can be enabled. hardcode_into_libs=yes # Add ABI-specific directories to the system library path. sys_lib_dlsearch_path_spec="/lib64 /usr/lib64 /lib /usr/lib" # Ideally, we could use ldconfig to report *all* directores which are # searched for libraries, however this is still not possible. 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esac fi sys_lib_dlsearch_path_spec='/usr/lib' ;; tpf*) # TPF is a cross-target only. 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WARNINGS_CFLAGS="-Wall -Werror" CFLAGS_FOR_TEST="$CFLAGS -Werror" for flag in -Wvla -Wframe-larger-than=5000 -Wstack-usage=10000 do { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports $flag" >&5 printf %s "checking whether the compiler supports $flag... 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"cannot make $CC report undeclared builtins See 'config.log' for more details" "$LINENO" 5; } ;; #( 'none needed') : ac_c_undeclared_builtin_options='' ;; #( *) : ac_c_undeclared_builtin_options=$ac_cv_c_undeclared_builtin_options ;; esac as_ac_Symbol=`printf "%s\n" "ac_cv_have_decl___builtin_add_overflow(int, int, int *)" | sed "$as_sed_sh"` ac_fn_check_decl "$LINENO" "__builtin_add_overflow(int, int, int *)" "$as_ac_Symbol" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS" if eval test \"x\$"$as_ac_Symbol"\" = x"yes" then : ac_have_decl=1 else case e in #( e) ac_have_decl=0 ;; esac fi printf "%s\n" "#define HAVE_DECL___BUILTIN_ADD_OVERFLOW $ac_have_decl" >>confdefs.h as_ac_Symbol=`printf "%s\n" "ac_cv_have_decl___builtin_mul_overflow(int, int, int *)" | sed "$as_sed_sh"` ac_fn_check_decl "$LINENO" "__builtin_mul_overflow(int, int, int *)" "$as_ac_Symbol" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS" if eval test \"x\$"$as_ac_Symbol"\" = x"yes" then : ac_have_decl=1 else case e in #( e) ac_have_decl=0 ;; esac fi printf "%s\n" "#define HAVE_DECL___BUILTIN_MUL_OVERFLOW $ac_have_decl" >>confdefs.h { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if __auto_type is available in this compiler" >&5 printf %s "checking if __auto_type is available in this compiler... " >&6; } cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ static int test (int a) { __auto_type at = a; return at; } _ACEOF if ac_fn_c_try_compile "$LINENO" then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "%s\n" "#define HAVE_AUTO_TYPE 1" >>confdefs.h else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext # The cast to long int works around a bug in the HP C Compiler # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects # declarations like 'int a3[[(sizeof (unsigned char)) >= 0]];'. # This bug is HP SR number 8606223364. { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of long" >&5 printf %s "checking size of long... " >&6; } if test ${ac_cv_sizeof_long+y} then : printf %s "(cached) " >&6 else case e in #( e) if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long))" "ac_cv_sizeof_long" "$ac_includes_default" then : else case e in #( e) if test "$ac_cv_type_long" = yes; then { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;} as_fn_error 77 "cannot compute sizeof (long) See 'config.log' for more details" "$LINENO" 5; } else ac_cv_sizeof_long=0 fi ;; esac fi ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long" >&5 printf "%s\n" "$ac_cv_sizeof_long" >&6; } printf "%s\n" "#define SIZEOF_LONG $ac_cv_sizeof_long" >>confdefs.h ac_fn_c_check_header_compile "$LINENO" "byteswap.h" "ac_cv_header_byteswap_h" "$ac_includes_default" if test "x$ac_cv_header_byteswap_h" = xyes then : printf "%s\n" "#define HAVE_BYTESWAP_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "endian.h" "ac_cv_header_endian_h" "$ac_includes_default" if test "x$ac_cv_header_endian_h" = xyes then : printf "%s\n" "#define HAVE_ENDIAN_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "linux/fs.h" "ac_cv_header_linux_fs_h" "$ac_includes_default" if test "x$ac_cv_header_linux_fs_h" = xyes then : printf "%s\n" "#define HAVE_LINUX_FS_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "linux/userfaultfd.h" "ac_cv_header_linux_userfaultfd_h" "$ac_includes_default" if test "x$ac_cv_header_linux_userfaultfd_h" = xyes then : printf "%s\n" "#define HAVE_LINUX_USERFAULTFD_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "stdatomic.h" "ac_cv_header_stdatomic_h" "$ac_includes_default" if test "x$ac_cv_header_stdatomic_h" = xyes then : printf "%s\n" "#define HAVE_STDATOMIC_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "sys/disk.h" "ac_cv_header_sys_disk_h" "$ac_includes_default" if test "x$ac_cv_header_sys_disk_h" = xyes then : printf "%s\n" "#define HAVE_SYS_DISK_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "sys/disklabel.h" "ac_cv_header_sys_disklabel_h" "$ac_includes_default" if test "x$ac_cv_header_sys_disklabel_h" = xyes then : printf "%s\n" "#define HAVE_SYS_DISKLABEL_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "sys/endian.h" "ac_cv_header_sys_endian_h" "$ac_includes_default" if test "x$ac_cv_header_sys_endian_h" = xyes then : printf "%s\n" "#define HAVE_SYS_ENDIAN_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "sys/ioctl.h" "ac_cv_header_sys_ioctl_h" "$ac_includes_default" if test "x$ac_cv_header_sys_ioctl_h" = xyes then : printf "%s\n" "#define HAVE_SYS_IOCTL_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "sys/syscall.h" "ac_cv_header_sys_syscall_h" "$ac_includes_default" if test "x$ac_cv_header_sys_syscall_h" = xyes then : printf "%s\n" "#define HAVE_SYS_SYSCALL_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "linux/vm_sockets.h" "ac_cv_header_linux_vm_sockets_h" " #include " if test "x$ac_cv_header_linux_vm_sockets_h" = xyes then : printf "%s\n" "#define HAVE_LINUX_VM_SOCKETS_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "sys/vsock.h" "ac_cv_header_sys_vsock_h" " #include " if test "x$ac_cv_header_sys_vsock_h" = xyes then : printf "%s\n" "#define HAVE_SYS_VSOCK_H 1" >>confdefs.h fi ac_fn_c_check_type "$LINENO" "struct sockaddr_vm" "ac_cv_type_struct_sockaddr_vm" " #include #ifdef HAVE_LINUX_VM_SOCKETS_H #include #elif HAVE_SYS_VSOCK_H #include #endif #ifndef AF_VSOCK #error \"no vsock support\" #endif " if test "x$ac_cv_type_struct_sockaddr_vm" = xyes then : printf "%s\n" "#define HAVE_STRUCT_SOCKADDR_VM 1" >>confdefs.h fi ac_fn_c_check_func "$LINENO" "posix_fadvise" "ac_cv_func_posix_fadvise" if test "x$ac_cv_func_posix_fadvise" = xyes then : printf "%s\n" "#define HAVE_POSIX_FADVISE 1" >>confdefs.h fi ac_fn_c_check_func "$LINENO" "posix_memalign" "ac_cv_func_posix_memalign" if test "x$ac_cv_func_posix_memalign" = xyes then : printf "%s\n" "#define HAVE_POSIX_MEMALIGN 1" >>confdefs.h fi ac_fn_c_check_func "$LINENO" "prctl" "ac_cv_func_prctl" if test "x$ac_cv_func_prctl" = xyes then : printf "%s\n" "#define HAVE_PRCTL 1" >>confdefs.h fi ac_fn_c_check_func "$LINENO" "strcasestr" "ac_cv_func_strcasestr" if test "x$ac_cv_func_strcasestr" = xyes then : printf "%s\n" "#define HAVE_STRCASESTR 1" >>confdefs.h fi ac_fn_c_check_func "$LINENO" "strerrordesc_np" "ac_cv_func_strerrordesc_np" if test "x$ac_cv_func_strerrordesc_np" = xyes then : printf "%s\n" "#define HAVE_STRERRORDESC_NP 1" >>confdefs.h fi ac_fn_c_check_func "$LINENO" "valloc" "ac_cv_func_valloc" if test "x$ac_cv_func_valloc" = xyes then : printf "%s\n" "#define HAVE_VALLOC 1" >>confdefs.h fi ac_fn_check_decl "$LINENO" "sys_errlist" "ac_cv_have_decl_sys_errlist" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS" if test "x$ac_cv_have_decl_sys_errlist" = xyes then : ac_have_decl=1 else case e in #( e) ac_have_decl=0 ;; esac fi printf "%s\n" "#define HAVE_DECL_SYS_ERRLIST $ac_have_decl" >>confdefs.h { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5 printf %s "checking for dlopen in -ldl... " >&6; } if test ${ac_cv_lib_dl_dlopen+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-ldl $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char dlopen (void); int main (void) { return dlopen (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_dl_dlopen=yes else case e in #( e) ac_cv_lib_dl_dlopen=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5 printf "%s\n" "$ac_cv_lib_dl_dlopen" >&6; } if test "x$ac_cv_lib_dl_dlopen" = xyes then : have_libdl=yes else case e in #( e) have_libdl=no ;; esac fi for ac_header in dlfcn.h do : ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default" if test "x$ac_cv_header_dlfcn_h" = xyes then : printf "%s\n" "#define HAVE_DLFCN_H 1" >>confdefs.h have_dlfcn=yes else case e in #( e) have_dlfcn=no ;; esac fi done if test "x$have_libdl" = "xyes" && test "x$have_dlfcn" = "xyes"; then HAVE_LIBDL_TRUE= HAVE_LIBDL_FALSE='#' else HAVE_LIBDL_TRUE='#' HAVE_LIBDL_FALSE= fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if this is glibc >= 2.34" >&5 printf %s "checking if this is glibc >= 2.34... " >&6; } cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include #if !defined(__GLIBC__) || __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 34) #error "not glibc 2.34" #endif int main (void) { ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO" then : if (LD_PRELOAD=libc_malloc_debug.so.0 /bin/true) 2>&1 | grep .; then is_glibc_234='missing suitable libc_malloc_debug.so.0' else is_glibc_234=yes fi else case e in #( e) is_glibc_234=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $is_glibc_234" >&5 printf "%s\n" "$is_glibc_234" >&6; } if test "x$is_glibc_234" = "xyes"; then HAVE_GLIBC_234_TRUE= HAVE_GLIBC_234_FALSE='#' else HAVE_GLIBC_234_TRUE='#' HAVE_GLIBC_234_FALSE= fi # Check whether --with-gnutls was given. if test ${with_gnutls+y} then : withval=$with_gnutls; else case e in #( e) with_gnutls=check ;; esac fi if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args. set dummy ${ac_tool_prefix}pkg-config; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_path_PKG_CONFIG+y} then : printf %s "(cached) " >&6 else case e in #( e) case $PKG_CONFIG in [\\/]* | ?:[\\/]*) ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path. ;; *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_path_PKG_CONFIG="$as_dir$ac_word$ac_exec_ext" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS ;; esac ;; esac fi PKG_CONFIG=$ac_cv_path_PKG_CONFIG if test -n "$PKG_CONFIG"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5 printf "%s\n" "$PKG_CONFIG" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_path_PKG_CONFIG"; then ac_pt_PKG_CONFIG=$PKG_CONFIG # Extract the first word of "pkg-config", so it can be a program name with args. set dummy pkg-config; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_path_ac_pt_PKG_CONFIG+y} then : printf %s "(cached) " >&6 else case e in #( e) case $ac_pt_PKG_CONFIG in [\\/]* | ?:[\\/]*) ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path. ;; *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_path_ac_pt_PKG_CONFIG="$as_dir$ac_word$ac_exec_ext" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS ;; esac ;; esac fi ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG if test -n "$ac_pt_PKG_CONFIG"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5 printf "%s\n" "$ac_pt_PKG_CONFIG" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_pt_PKG_CONFIG" = x; then PKG_CONFIG="" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac PKG_CONFIG=$ac_pt_PKG_CONFIG fi else PKG_CONFIG="$ac_cv_path_PKG_CONFIG" fi fi if test -n "$PKG_CONFIG"; then _pkg_min_version=0.9.0 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5 printf %s "checking pkg-config is at least version $_pkg_min_version... " >&6; } if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } PKG_CONFIG="" fi fi if test "$with_gnutls" != "no" then : pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gnutls >= 3.5.18" >&5 printf %s "checking for gnutls >= 3.5.18... " >&6; } if test -n "$GNUTLS_CFLAGS"; then pkg_cv_GNUTLS_CFLAGS="$GNUTLS_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"gnutls >= 3.5.18\""; } >&5 ($PKG_CONFIG --exists --print-errors "gnutls >= 3.5.18") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_GNUTLS_CFLAGS=`$PKG_CONFIG --cflags "gnutls >= 3.5.18" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$GNUTLS_LIBS"; then pkg_cv_GNUTLS_LIBS="$GNUTLS_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"gnutls >= 3.5.18\""; } >&5 ($PKG_CONFIG --exists --print-errors "gnutls >= 3.5.18") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_GNUTLS_LIBS=`$PKG_CONFIG --libs "gnutls >= 3.5.18" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then GNUTLS_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "gnutls >= 3.5.18" 2>&1` else GNUTLS_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "gnutls >= 3.5.18" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$GNUTLS_PKG_ERRORS" >&5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: gnutls not found or < 3.5.18, TLS support will be disabled." >&5 printf "%s\n" "$as_me: WARNING: gnutls not found or < 3.5.18, TLS support will be disabled." >&2;} elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: gnutls not found or < 3.5.18, TLS support will be disabled." >&5 printf "%s\n" "$as_me: WARNING: gnutls not found or < 3.5.18, TLS support will be disabled." >&2;} else GNUTLS_CFLAGS=$pkg_cv_GNUTLS_CFLAGS GNUTLS_LIBS=$pkg_cv_GNUTLS_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "gnutls version is "; $PKG_CONFIG --modversion gnutls printf "%s\n" "#define HAVE_GNUTLS 1" >>confdefs.h fi fi if test "x$GNUTLS_LIBS" != "x"; then HAVE_GNUTLS_TRUE= HAVE_GNUTLS_FALSE='#' else HAVE_GNUTLS_TRUE='#' HAVE_GNUTLS_FALSE= fi if test "$GNUTLS_LIBS" != "" then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for default TLS session priority string" >&5 printf %s "checking for default TLS session priority string... " >&6; } # Check whether --with-tls-priority was given. if test ${with_tls_priority+y} then : withval=$with_tls_priority; tls_priority=$withval else case e in #( e) tls_priority=NORMAL ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $tls_priority" >&5 printf "%s\n" "$tls_priority" >&6; } printf "%s\n" "#define TLS_PRIORITY \"$tls_priority\"" >>confdefs.h # Check for working . This is only needed for # gnutls 3.7.9 and no other version (unfortunately used by Debian # 12 and others). In that release kTLS functionality was added to # incorrectly, before being moved to # in 3.8.0. breaks on # Windows, so we must make inclusion conditional. When we move # the minimum version of gnutls >= 3.8.0 we can get rid of this. old_CFLAGS="$CFLAGS" CFLAGS="$GNUTLS_CFLAGS $CFLAGS" ac_fn_c_check_header_compile "$LINENO" "gnutls/socket.h" "ac_cv_header_gnutls_socket_h" "$ac_includes_default" if test "x$ac_cv_header_gnutls_socket_h" = xyes then : printf "%s\n" "#define HAVE_GNUTLS_SOCKET_H 1" >>confdefs.h fi CFLAGS="$old_CFLAGS" # Check for APIs which may not be present. old_LIBS="$LIBS" LIBS="$GNUTLS_LIBS $LIBS" ac_fn_c_check_func "$LINENO" "gnutls_transport_is_ktls_enabled" "ac_cv_func_gnutls_transport_is_ktls_enabled" if test "x$ac_cv_func_gnutls_transport_is_ktls_enabled" = xyes then : printf "%s\n" "#define HAVE_GNUTLS_TRANSPORT_IS_KTLS_ENABLED 1" >>confdefs.h fi LIBS="$old_LIBS" fi # Extract the first word of "certtool", so it can be a program name with args. set dummy certtool; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_CERTTOOL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$CERTTOOL"; then ac_cv_prog_CERTTOOL="$CERTTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_CERTTOOL="certtool" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi CERTTOOL=$ac_cv_prog_CERTTOOL if test -n "$CERTTOOL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CERTTOOL" >&5 printf "%s\n" "$CERTTOOL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$CERTTOOL" != "x"; then HAVE_CERTTOOL_TRUE= HAVE_CERTTOOL_FALSE='#' else HAVE_CERTTOOL_TRUE='#' HAVE_CERTTOOL_FALSE= fi # Extract the first word of "psktool", so it can be a program name with args. set dummy psktool; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_PSKTOOL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$PSKTOOL"; then ac_cv_prog_PSKTOOL="$PSKTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_PSKTOOL="psktool" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi PSKTOOL=$ac_cv_prog_PSKTOOL if test -n "$PSKTOOL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PSKTOOL" >&5 printf "%s\n" "$PSKTOOL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$PSKTOOL" != "x"; then HAVE_PSKTOOL_TRUE= HAVE_PSKTOOL_FALSE='#' else HAVE_PSKTOOL_TRUE='#' HAVE_PSKTOOL_FALSE= fi # Check whether --with-libxml2 was given. if test ${with_libxml2+y} then : withval=$with_libxml2; else case e in #( e) with_libxml2=check ;; esac fi if test "$with_libxml2" != "no" then : pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for libxml-2.0" >&5 printf %s "checking for libxml-2.0... " >&6; } if test -n "$LIBXML2_CFLAGS"; then pkg_cv_LIBXML2_CFLAGS="$LIBXML2_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxml-2.0\""; } >&5 ($PKG_CONFIG --exists --print-errors "libxml-2.0") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_LIBXML2_CFLAGS=`$PKG_CONFIG --cflags "libxml-2.0" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$LIBXML2_LIBS"; then pkg_cv_LIBXML2_LIBS="$LIBXML2_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxml-2.0\""; } >&5 ($PKG_CONFIG --exists --print-errors "libxml-2.0") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_LIBXML2_LIBS=`$PKG_CONFIG --libs "libxml-2.0" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then LIBXML2_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "libxml-2.0" 2>&1` else LIBXML2_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "libxml-2.0" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$LIBXML2_PKG_ERRORS" >&5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: libxml2 not found, NBD URI support will be disabled." >&5 printf "%s\n" "$as_me: WARNING: libxml2 not found, NBD URI support will be disabled." >&2;} elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: libxml2 not found, NBD URI support will be disabled." >&5 printf "%s\n" "$as_me: WARNING: libxml2 not found, NBD URI support will be disabled." >&2;} else LIBXML2_CFLAGS=$pkg_cv_LIBXML2_CFLAGS LIBXML2_LIBS=$pkg_cv_LIBXML2_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "libxml2 version is "; $PKG_CONFIG --modversion libxml-2.0 printf "%s\n" "#define HAVE_LIBXML2 1" >>confdefs.h fi fi if test "x$LIBXML2_LIBS" != "x"; then HAVE_LIBXML2_TRUE= HAVE_LIBXML2_FALSE='#' else HAVE_LIBXML2_TRUE='#' HAVE_LIBXML2_FALSE= fi nbdkit_min_minor="12" ;# 1.12 nbdkit_plugins="file memory null pattern sh" # Extract the first word of "nbdkit", so it can be a program name with args. set dummy nbdkit; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_NBDKIT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$NBDKIT"; then ac_cv_prog_NBDKIT="$NBDKIT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_NBDKIT="nbdkit" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi NBDKIT=$ac_cv_prog_NBDKIT if test -n "$NBDKIT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $NBDKIT" >&5 printf "%s\n" "$NBDKIT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$NBDKIT" != "x" then : have_nbdkit_features=yes { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for nbdkit >= 1.$nbdkit_min_minor" >&5 printf %s "checking for nbdkit >= 1.$nbdkit_min_minor... " >&6; } nbdkit_minor="$( $NBDKIT --version | $SED 's/^nbdkit 1\.\([0-9]*\)\..*/\1/' )" if test $nbdkit_minor -ge $nbdkit_min_minor then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes (1.$nbdkit_minor)" >&5 printf "%s\n" "yes (1.$nbdkit_minor)" >&6; } printf "nbdkit version is "; $NBDKIT --version else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no (1.$nbdkit_minor)" >&5 printf "%s\n" "no (1.$nbdkit_minor)" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: nbdkit is too old, some tests will be disabled" >&5 printf "%s\n" "$as_me: WARNING: nbdkit is too old, some tests will be disabled" >&2;} have_nbdkit_features=no ;; esac fi for p in $nbdkit_plugins; do { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for nbdkit $p plugin" >&5 printf %s "checking for nbdkit $p plugin... " >&6; } if $NBDKIT $p --version >&5 2>&1 then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: nbdkit $p plugin is missing, some tests will be disabled" >&5 printf "%s\n" "$as_me: WARNING: nbdkit $p plugin is missing, some tests will be disabled" >&2;} have_nbdkit_features=no ;; esac fi done printf "%s\n" "#define NBDKIT \"$NBDKIT\"" >>confdefs.h fi if test "x$NBDKIT" != "x" && test "x$have_nbdkit_features" = "xyes"; then HAVE_NBDKIT_TRUE= HAVE_NBDKIT_FALSE='#' else HAVE_NBDKIT_TRUE='#' HAVE_NBDKIT_FALSE= fi # Extract the first word of "nbd-server", so it can be a program name with args. set dummy nbd-server; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_NBD_SERVER+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$NBD_SERVER"; then ac_cv_prog_NBD_SERVER="$NBD_SERVER" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_NBD_SERVER="nbd-server" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi NBD_SERVER=$ac_cv_prog_NBD_SERVER if test -n "$NBD_SERVER"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $NBD_SERVER" >&5 printf "%s\n" "$NBD_SERVER" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$NBD_SERVER" != "x"; then HAVE_NBD_SERVER_TRUE= HAVE_NBD_SERVER_FALSE='#' else HAVE_NBD_SERVER_TRUE='#' HAVE_NBD_SERVER_FALSE= fi if test "x$NBD_SERVER" != "x" then : printf "%s\n" "#define NBD_SERVER \"$NBD_SERVER\"" >>confdefs.h printf "nbd-server version is "; $NBD_SERVER --version | head -1 fi # Extract the first word of "qemu-nbd", so it can be a program name with args. set dummy qemu-nbd; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_QEMU_NBD+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$QEMU_NBD"; then ac_cv_prog_QEMU_NBD="$QEMU_NBD" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_QEMU_NBD="qemu-nbd" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi QEMU_NBD=$ac_cv_prog_QEMU_NBD if test -n "$QEMU_NBD"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $QEMU_NBD" >&5 printf "%s\n" "$QEMU_NBD" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$QEMU_NBD" != "x"; then HAVE_QEMU_NBD_TRUE= HAVE_QEMU_NBD_FALSE='#' else HAVE_QEMU_NBD_TRUE='#' HAVE_QEMU_NBD_FALSE= fi if test "x$QEMU_NBD" != "x" then : printf "%s\n" "#define QEMU_NBD \"$QEMU_NBD\"" >>confdefs.h printf "qemu-nbd version is "; $QEMU_NBD --version | head -1 fi # Extract the first word of "qemu-storage-daemon", so it can be a program name with args. set dummy qemu-storage-daemon; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_QEMU_STORAGE_DAEMON+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$QEMU_STORAGE_DAEMON"; then ac_cv_prog_QEMU_STORAGE_DAEMON="$QEMU_STORAGE_DAEMON" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_QEMU_STORAGE_DAEMON="qemu-storage-daemon" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi QEMU_STORAGE_DAEMON=$ac_cv_prog_QEMU_STORAGE_DAEMON if test -n "$QEMU_STORAGE_DAEMON"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $QEMU_STORAGE_DAEMON" >&5 printf "%s\n" "$QEMU_STORAGE_DAEMON" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$QEMU_STORAGE_DAEMON" != "x"; then HAVE_QEMU_STORAGE_DAEMON_TRUE= HAVE_QEMU_STORAGE_DAEMON_FALSE='#' else HAVE_QEMU_STORAGE_DAEMON_TRUE='#' HAVE_QEMU_STORAGE_DAEMON_FALSE= fi pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for glib-2.0" >&5 printf %s "checking for glib-2.0... " >&6; } if test -n "$GLIB_CFLAGS"; then pkg_cv_GLIB_CFLAGS="$GLIB_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"glib-2.0\""; } >&5 ($PKG_CONFIG --exists --print-errors "glib-2.0") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_GLIB_CFLAGS=`$PKG_CONFIG --cflags "glib-2.0" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$GLIB_LIBS"; then pkg_cv_GLIB_LIBS="$GLIB_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"glib-2.0\""; } >&5 ($PKG_CONFIG --exists --print-errors "glib-2.0") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_GLIB_LIBS=`$PKG_CONFIG --libs "glib-2.0" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then GLIB_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "glib-2.0" 2>&1` else GLIB_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "glib-2.0" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$GLIB_PKG_ERRORS" >&5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: glib2 not found, some examples will not be compiled" >&5 printf "%s\n" "$as_me: WARNING: glib2 not found, some examples will not be compiled" >&2;} elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: glib2 not found, some examples will not be compiled" >&5 printf "%s\n" "$as_me: WARNING: glib2 not found, some examples will not be compiled" >&2;} else GLIB_CFLAGS=$pkg_cv_GLIB_CFLAGS GLIB_LIBS=$pkg_cv_GLIB_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "glib2 version is "; $PKG_CONFIG --modversion glib-2.0 fi if test "x$GLIB_LIBS" != "x"; then HAVE_GLIB_TRUE= HAVE_GLIB_FALSE='#' else HAVE_GLIB_TRUE='#' HAVE_GLIB_FALSE= fi pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for libev" >&5 printf %s "checking for libev... " >&6; } if test -n "$LIBEV_CFLAGS"; then pkg_cv_LIBEV_CFLAGS="$LIBEV_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libev\""; } >&5 ($PKG_CONFIG --exists --print-errors "libev") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_LIBEV_CFLAGS=`$PKG_CONFIG --cflags "libev" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$LIBEV_LIBS"; then pkg_cv_LIBEV_LIBS="$LIBEV_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libev\""; } >&5 ($PKG_CONFIG --exists --print-errors "libev") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_LIBEV_LIBS=`$PKG_CONFIG --libs "libev" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then LIBEV_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "libev" 2>&1` else LIBEV_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "libev" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$LIBEV_PKG_ERRORS" >&5 for ac_header in ev.h do : ac_fn_c_check_header_compile "$LINENO" "ev.h" "ac_cv_header_ev_h" "$ac_includes_default" if test "x$ac_cv_header_ev_h" = xyes then : printf "%s\n" "#define HAVE_EV_H 1" >>confdefs.h { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ev_time in -lev" >&5 printf %s "checking for ev_time in -lev... " >&6; } if test ${ac_cv_lib_ev_ev_time+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-lev $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char ev_time (void); int main (void) { return ev_time (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_ev_ev_time=yes else case e in #( e) ac_cv_lib_ev_ev_time=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ev_ev_time" >&5 printf "%s\n" "$ac_cv_lib_ev_ev_time" >&6; } if test "x$ac_cv_lib_ev_ev_time" = xyes then : LIBEV_LIBS="-lev" else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: libev not found, some examples will not be compiled" >&5 printf "%s\n" "$as_me: WARNING: libev not found, some examples will not be compiled" >&2;} ;; esac fi else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: ev.h not found, some examples will not be compiled" >&5 printf "%s\n" "$as_me: WARNING: ev.h not found, some examples will not be compiled" >&2;} ;; esac fi done elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } for ac_header in ev.h do : ac_fn_c_check_header_compile "$LINENO" "ev.h" "ac_cv_header_ev_h" "$ac_includes_default" if test "x$ac_cv_header_ev_h" = xyes then : printf "%s\n" "#define HAVE_EV_H 1" >>confdefs.h { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ev_time in -lev" >&5 printf %s "checking for ev_time in -lev... " >&6; } if test ${ac_cv_lib_ev_ev_time+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-lev $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char ev_time (void); int main (void) { return ev_time (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_ev_ev_time=yes else case e in #( e) ac_cv_lib_ev_ev_time=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ev_ev_time" >&5 printf "%s\n" "$ac_cv_lib_ev_ev_time" >&6; } if test "x$ac_cv_lib_ev_ev_time" = xyes then : LIBEV_LIBS="-lev" else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: libev not found, some examples will not be compiled" >&5 printf "%s\n" "$as_me: WARNING: libev not found, some examples will not be compiled" >&2;} ;; esac fi else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: ev.h not found, some examples will not be compiled" >&5 printf "%s\n" "$as_me: WARNING: ev.h not found, some examples will not be compiled" >&2;} ;; esac fi done else LIBEV_CFLAGS=$pkg_cv_LIBEV_CFLAGS LIBEV_LIBS=$pkg_cv_LIBEV_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "libev version is "; $PKG_CONFIG --modversion libev fi if test "x$LIBEV_LIBS" != "x" then : old_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS $LIBEV_CFLAGS -Werror=strict-aliasing -O2" { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if the compiler is new enough for good aliasing rules" >&5 printf %s "checking if the compiler is new enough for good aliasing rules... " >&6; } cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include static void cb (struct ev_loop *l, ev_timer *t, int e) { } static ev_timer timer; int main (void) { ev_timer_init (&timer, cb, 0, .1); ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO" then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } LIBEV_CFLAGS="$LIBEV_CFLAGS -Wno-strict-aliasing" ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext CFLAGS="$old_CFLAGS" fi if test "x$LIBEV_LIBS" != "x"; then HAVE_LIBEV_TRUE= HAVE_LIBEV_FALSE='#' else HAVE_LIBEV_TRUE='#' HAVE_LIBEV_FALSE= fi # Check whether --enable-fuse was given. if test ${enable_fuse+y} then : enableval=$enable_fuse; else case e in #( e) enable_fuse=yes ;; esac fi if test "x$enable_fuse" != "xno" then : pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for fuse3" >&5 printf %s "checking for fuse3... " >&6; } if test -n "$FUSE_CFLAGS"; then pkg_cv_FUSE_CFLAGS="$FUSE_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"fuse3\""; } >&5 ($PKG_CONFIG --exists --print-errors "fuse3") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_FUSE_CFLAGS=`$PKG_CONFIG --cflags "fuse3" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$FUSE_LIBS"; then pkg_cv_FUSE_LIBS="$FUSE_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"fuse3\""; } >&5 ($PKG_CONFIG --exists --print-errors "fuse3") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_FUSE_LIBS=`$PKG_CONFIG --libs "fuse3" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then FUSE_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "fuse3" 2>&1` else FUSE_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "fuse3" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$FUSE_PKG_ERRORS" >&5 enable_fuse=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: FUSE 3 library and headers are missing, so optional nbdfuse program won't be built" >&5 printf "%s\n" "$as_me: WARNING: FUSE 3 library and headers are missing, so optional nbdfuse program won't be built" >&2;} elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } enable_fuse=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: FUSE 3 library and headers are missing, so optional nbdfuse program won't be built" >&5 printf "%s\n" "$as_me: WARNING: FUSE 3 library and headers are missing, so optional nbdfuse program won't be built" >&2;} else FUSE_CFLAGS=$pkg_cv_FUSE_CFLAGS FUSE_LIBS=$pkg_cv_FUSE_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "fuse3 version is "; $PKG_CONFIG --modversion fuse3 printf "%s\n" "#define HAVE_FUSE 1" >>confdefs.h fi fi if test "x$enable_fuse" != "xno"; then HAVE_FUSE_TRUE= HAVE_FUSE_FALSE='#' else HAVE_FUSE_TRUE='#' HAVE_FUSE_FALSE= fi # Check whether --enable-ublk was given. if test ${enable_ublk+y} then : enableval=$enable_ublk; else case e in #( e) enable_ublk=yes ;; esac fi if test "x$enable_ublk" != "xno" then : pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ublksrv" >&5 printf %s "checking for ublksrv... " >&6; } if test -n "$UBLKSRV_CFLAGS"; then pkg_cv_UBLKSRV_CFLAGS="$UBLKSRV_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ublksrv\""; } >&5 ($PKG_CONFIG --exists --print-errors "ublksrv") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_UBLKSRV_CFLAGS=`$PKG_CONFIG --cflags "ublksrv" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$UBLKSRV_LIBS"; then pkg_cv_UBLKSRV_LIBS="$UBLKSRV_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"ublksrv\""; } >&5 ($PKG_CONFIG --exists --print-errors "ublksrv") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_UBLKSRV_LIBS=`$PKG_CONFIG --libs "ublksrv" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then UBLKSRV_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "ublksrv" 2>&1` else UBLKSRV_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "ublksrv" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$UBLKSRV_PKG_ERRORS" >&5 enable_ublk=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: libublksrv (ublk server) library and headers are missing, so optional nbdublk program won't be built" >&5 printf "%s\n" "$as_me: WARNING: libublksrv (ublk server) library and headers are missing, so optional nbdublk program won't be built" >&2;} elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } enable_ublk=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: libublksrv (ublk server) library and headers are missing, so optional nbdublk program won't be built" >&5 printf "%s\n" "$as_me: WARNING: libublksrv (ublk server) library and headers are missing, so optional nbdublk program won't be built" >&2;} else UBLKSRV_CFLAGS=$pkg_cv_UBLKSRV_CFLAGS UBLKSRV_LIBS=$pkg_cv_UBLKSRV_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "ublksrv version is "; $PKG_CONFIG --modversion ublksrv printf "%s\n" "#define HAVE_UBLK 1" >>confdefs.h fi fi if test "x$enable_ublk" != "xno"; then HAVE_UBLK_TRUE= HAVE_UBLK_FALSE='#' else HAVE_UBLK_TRUE='#' HAVE_UBLK_FALSE= fi # Extract the first word of "perl", so it can be a program name with args. set dummy perl; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_PERL+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$PERL"; then ac_cv_prog_PERL="$PERL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_PERL="perl" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS test -z "$ac_cv_prog_PERL" && ac_cv_prog_PERL="no" fi ;; esac fi PERL=$ac_cv_prog_PERL if test -n "$PERL"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PERL" >&5 printf "%s\n" "$PERL" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$PERL" != "xno" then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if we have perl Pod::Man and Pod::Simple" >&5 printf %s "checking if we have perl Pod::Man and Pod::Simple... " >&6; } if $PERL -MPod::Man -MPod::Simple -e 1 >&5 2>&1 then : enable_pod=yes else case e in #( e) enable_pod=no ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $enable_pod" >&5 printf "%s\n" "$enable_pod" >&6; } fi if test "x$PERL" != "xno" && test "x$enable_pod" = "xyes"; then HAVE_POD_TRUE= HAVE_POD_FALSE='#' else HAVE_POD_TRUE='#' HAVE_POD_FALSE= fi PODWRAPPER="$PERL $(pwd)/podwrapper.pl" # Check whether --enable-libfuzzer was given. if test ${enable_libfuzzer+y} then : enableval=$enable_libfuzzer; else case e in #( e) enable_libfuzzer=no ;; esac fi if test "x$enable_libfuzzer" = "xyes"; then ENABLE_LIBFUZZER_TRUE= ENABLE_LIBFUZZER_FALSE='#' else ENABLE_LIBFUZZER_TRUE='#' ENABLE_LIBFUZZER_FALSE= fi # Check whether --with-bash-completions was given. if test ${with_bash_completions+y} then : withval=$with_bash_completions; fi if test "x$with_bash_completions" != xno then : pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for bash-completion >= 2.0" >&5 printf %s "checking for bash-completion >= 2.0... " >&6; } if test -n "$BASH_COMPLETION_CFLAGS"; then pkg_cv_BASH_COMPLETION_CFLAGS="$BASH_COMPLETION_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"bash-completion >= 2.0\""; } >&5 ($PKG_CONFIG --exists --print-errors "bash-completion >= 2.0") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_BASH_COMPLETION_CFLAGS=`$PKG_CONFIG --cflags "bash-completion >= 2.0" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$BASH_COMPLETION_LIBS"; then pkg_cv_BASH_COMPLETION_LIBS="$BASH_COMPLETION_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"bash-completion >= 2.0\""; } >&5 ($PKG_CONFIG --exists --print-errors "bash-completion >= 2.0") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_BASH_COMPLETION_LIBS=`$PKG_CONFIG --libs "bash-completion >= 2.0" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then BASH_COMPLETION_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "bash-completion >= 2.0" 2>&1` else BASH_COMPLETION_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "bash-completion >= 2.0" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$BASH_COMPLETION_PKG_ERRORS" >&5 bash_completion=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: bash-completion not installed" >&5 printf "%s\n" "$as_me: WARNING: bash-completion not installed" >&2;} elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } bash_completion=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: bash-completion not installed" >&5 printf "%s\n" "$as_me: WARNING: bash-completion not installed" >&2;} else BASH_COMPLETION_CFLAGS=$pkg_cv_BASH_COMPLETION_CFLAGS BASH_COMPLETION_LIBS=$pkg_cv_BASH_COMPLETION_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } bash_completion=yes { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for bash-completions directory" >&5 printf %s "checking for bash-completions directory... " >&6; } if test -n "$bashcompdir"; then pkg_cv_bashcompdir="$bashcompdir" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"bash-completion\""; } >&5 ($PKG_CONFIG --exists --print-errors "bash-completion") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_bashcompdir=`$PKG_CONFIG --variable="completionsdir" "bash-completion" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi bashcompdir=$pkg_cv_bashcompdir if test "x$bashcompdir" = x"" then : fi if test -z "$bashcompdir" then : bashcompdir="${sysconfdir}/bash_completion.d" fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $bashcompdir" >&5 printf "%s\n" "$bashcompdir" >&6; } fi fi if test "x$bash_completion" = xno && test "x$with_bash_completions" = xyes then : as_fn_error $? "bash-completions requested but required packages not found" "$LINENO" 5 fi if test "x$bash_completion" = "xyes"; then HAVE_BASH_COMPLETION_TRUE= HAVE_BASH_COMPLETION_FALSE='#' else HAVE_BASH_COMPLETION_TRUE='#' HAVE_BASH_COMPLETION_FALSE= fi # checking for ocamlc if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlc", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlc; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLC"; then ac_cv_prog_OCAMLC="$OCAMLC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLC="${ac_tool_prefix}ocamlc" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLC=$ac_cv_prog_OCAMLC if test -n "$OCAMLC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLC" >&5 printf "%s\n" "$OCAMLC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLC"; then ac_ct_OCAMLC=$OCAMLC # Extract the first word of "ocamlc", so it can be a program name with args. set dummy ocamlc; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLC"; then ac_cv_prog_ac_ct_OCAMLC="$ac_ct_OCAMLC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLC="ocamlc" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLC=$ac_cv_prog_ac_ct_OCAMLC if test -n "$ac_ct_OCAMLC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLC" >&5 printf "%s\n" "$ac_ct_OCAMLC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLC" = x; then OCAMLC="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLC=$ac_ct_OCAMLC fi else OCAMLC="$ac_cv_prog_OCAMLC" fi if test "$OCAMLC" != "no"; then OCAMLVERSION=`$OCAMLC -v | sed -n -e 's|.*version* *\(.*\)$|\1|p'` { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: OCaml version is $OCAMLVERSION" >&5 printf "%s\n" "OCaml version is $OCAMLVERSION" >&6; } # If OCAMLLIB is set, use it if test "$OCAMLLIB" = ""; then OCAMLLIB=`$OCAMLC -where 2>/dev/null || $OCAMLC -v|tail -1|cut -d ' ' -f 4` else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: OCAMLLIB previously set; preserving it." >&5 printf "%s\n" "OCAMLLIB previously set; preserving it." >&6; } fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: OCaml library path is $OCAMLLIB" >&5 printf "%s\n" "OCaml library path is $OCAMLLIB" >&6; } # checking for ocamlopt if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlopt", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlopt; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLOPT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLOPT"; then ac_cv_prog_OCAMLOPT="$OCAMLOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLOPT="${ac_tool_prefix}ocamlopt" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLOPT=$ac_cv_prog_OCAMLOPT if test -n "$OCAMLOPT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLOPT" >&5 printf "%s\n" "$OCAMLOPT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLOPT"; then ac_ct_OCAMLOPT=$OCAMLOPT # Extract the first word of "ocamlopt", so it can be a program name with args. set dummy ocamlopt; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLOPT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLOPT"; then ac_cv_prog_ac_ct_OCAMLOPT="$ac_ct_OCAMLOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLOPT="ocamlopt" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLOPT=$ac_cv_prog_ac_ct_OCAMLOPT if test -n "$ac_ct_OCAMLOPT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLOPT" >&5 printf "%s\n" "$ac_ct_OCAMLOPT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLOPT" = x; then OCAMLOPT="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLOPT=$ac_ct_OCAMLOPT fi else OCAMLOPT="$ac_cv_prog_OCAMLOPT" fi OCAMLBEST=byte if test "$OCAMLOPT" = "no"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: Cannot find ocamlopt; bytecode compilation only." >&5 printf "%s\n" "$as_me: WARNING: Cannot find ocamlopt; bytecode compilation only." >&2;} else TMPVERSION=`$OCAMLOPT -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' ` if test "$TMPVERSION" != "$OCAMLVERSION" ; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: versions differs from ocamlc; ocamlopt discarded." >&5 printf "%s\n" "versions differs from ocamlc; ocamlopt discarded." >&6; } OCAMLOPT=no else OCAMLBEST=opt fi fi # checking for ocamlc.opt if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlc.opt", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlc.opt; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLCDOTOPT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLCDOTOPT"; then ac_cv_prog_OCAMLCDOTOPT="$OCAMLCDOTOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLCDOTOPT="${ac_tool_prefix}ocamlc.opt" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLCDOTOPT=$ac_cv_prog_OCAMLCDOTOPT if test -n "$OCAMLCDOTOPT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLCDOTOPT" >&5 printf "%s\n" "$OCAMLCDOTOPT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLCDOTOPT"; then ac_ct_OCAMLCDOTOPT=$OCAMLCDOTOPT # Extract the first word of "ocamlc.opt", so it can be a program name with args. set dummy ocamlc.opt; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLCDOTOPT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLCDOTOPT"; then ac_cv_prog_ac_ct_OCAMLCDOTOPT="$ac_ct_OCAMLCDOTOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLCDOTOPT="ocamlc.opt" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLCDOTOPT=$ac_cv_prog_ac_ct_OCAMLCDOTOPT if test -n "$ac_ct_OCAMLCDOTOPT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLCDOTOPT" >&5 printf "%s\n" "$ac_ct_OCAMLCDOTOPT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLCDOTOPT" = x; then OCAMLCDOTOPT="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLCDOTOPT=$ac_ct_OCAMLCDOTOPT fi else OCAMLCDOTOPT="$ac_cv_prog_OCAMLCDOTOPT" fi if test "$OCAMLCDOTOPT" != "no"; then TMPVERSION=`$OCAMLCDOTOPT -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' ` if test "$TMPVERSION" != "$OCAMLVERSION" ; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: versions differs from ocamlc; ocamlc.opt discarded." >&5 printf "%s\n" "versions differs from ocamlc; ocamlc.opt discarded." >&6; } else OCAMLC=$OCAMLCDOTOPT fi fi # checking for ocamlopt.opt if test "$OCAMLOPT" != "no" ; then if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlopt.opt", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlopt.opt; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLOPTDOTOPT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLOPTDOTOPT"; then ac_cv_prog_OCAMLOPTDOTOPT="$OCAMLOPTDOTOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLOPTDOTOPT="${ac_tool_prefix}ocamlopt.opt" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLOPTDOTOPT=$ac_cv_prog_OCAMLOPTDOTOPT if test -n "$OCAMLOPTDOTOPT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLOPTDOTOPT" >&5 printf "%s\n" "$OCAMLOPTDOTOPT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLOPTDOTOPT"; then ac_ct_OCAMLOPTDOTOPT=$OCAMLOPTDOTOPT # Extract the first word of "ocamlopt.opt", so it can be a program name with args. set dummy ocamlopt.opt; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLOPTDOTOPT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLOPTDOTOPT"; then ac_cv_prog_ac_ct_OCAMLOPTDOTOPT="$ac_ct_OCAMLOPTDOTOPT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLOPTDOTOPT="ocamlopt.opt" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLOPTDOTOPT=$ac_cv_prog_ac_ct_OCAMLOPTDOTOPT if test -n "$ac_ct_OCAMLOPTDOTOPT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLOPTDOTOPT" >&5 printf "%s\n" "$ac_ct_OCAMLOPTDOTOPT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLOPTDOTOPT" = x; then OCAMLOPTDOTOPT="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLOPTDOTOPT=$ac_ct_OCAMLOPTDOTOPT fi else OCAMLOPTDOTOPT="$ac_cv_prog_OCAMLOPTDOTOPT" fi if test "$OCAMLOPTDOTOPT" != "no"; then TMPVERSION=`$OCAMLOPTDOTOPT -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' ` if test "$TMPVERSION" != "$OCAMLVERSION" ; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: version differs from ocamlc; ocamlopt.opt discarded." >&5 printf "%s\n" "version differs from ocamlc; ocamlopt.opt discarded." >&6; } else OCAMLOPT=$OCAMLOPTDOTOPT fi fi fi fi # checking for ocaml toplevel if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocaml", so it can be a program name with args. set dummy ${ac_tool_prefix}ocaml; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAML+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAML"; then ac_cv_prog_OCAML="$OCAML" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAML="${ac_tool_prefix}ocaml" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAML=$ac_cv_prog_OCAML if test -n "$OCAML"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAML" >&5 printf "%s\n" "$OCAML" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAML"; then ac_ct_OCAML=$OCAML # Extract the first word of "ocaml", so it can be a program name with args. set dummy ocaml; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAML+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAML"; then ac_cv_prog_ac_ct_OCAML="$ac_ct_OCAML" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAML="ocaml" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAML=$ac_cv_prog_ac_ct_OCAML if test -n "$ac_ct_OCAML"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAML" >&5 printf "%s\n" "$ac_ct_OCAML" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAML" = x; then OCAML="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAML=$ac_ct_OCAML fi else OCAML="$ac_cv_prog_OCAML" fi # checking for ocamldep if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamldep", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamldep; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLDEP+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLDEP"; then ac_cv_prog_OCAMLDEP="$OCAMLDEP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLDEP="${ac_tool_prefix}ocamldep" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLDEP=$ac_cv_prog_OCAMLDEP if test -n "$OCAMLDEP"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLDEP" >&5 printf "%s\n" "$OCAMLDEP" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLDEP"; then ac_ct_OCAMLDEP=$OCAMLDEP # Extract the first word of "ocamldep", so it can be a program name with args. set dummy ocamldep; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLDEP+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLDEP"; then ac_cv_prog_ac_ct_OCAMLDEP="$ac_ct_OCAMLDEP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLDEP="ocamldep" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLDEP=$ac_cv_prog_ac_ct_OCAMLDEP if test -n "$ac_ct_OCAMLDEP"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLDEP" >&5 printf "%s\n" "$ac_ct_OCAMLDEP" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLDEP" = x; then OCAMLDEP="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLDEP=$ac_ct_OCAMLDEP fi else OCAMLDEP="$ac_cv_prog_OCAMLDEP" fi # checking for ocamlmktop if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlmktop", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlmktop; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLMKTOP+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLMKTOP"; then ac_cv_prog_OCAMLMKTOP="$OCAMLMKTOP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLMKTOP="${ac_tool_prefix}ocamlmktop" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLMKTOP=$ac_cv_prog_OCAMLMKTOP if test -n "$OCAMLMKTOP"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLMKTOP" >&5 printf "%s\n" "$OCAMLMKTOP" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLMKTOP"; then ac_ct_OCAMLMKTOP=$OCAMLMKTOP # Extract the first word of "ocamlmktop", so it can be a program name with args. set dummy ocamlmktop; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLMKTOP+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLMKTOP"; then ac_cv_prog_ac_ct_OCAMLMKTOP="$ac_ct_OCAMLMKTOP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLMKTOP="ocamlmktop" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLMKTOP=$ac_cv_prog_ac_ct_OCAMLMKTOP if test -n "$ac_ct_OCAMLMKTOP"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLMKTOP" >&5 printf "%s\n" "$ac_ct_OCAMLMKTOP" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLMKTOP" = x; then OCAMLMKTOP="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLMKTOP=$ac_ct_OCAMLMKTOP fi else OCAMLMKTOP="$ac_cv_prog_OCAMLMKTOP" fi # checking for ocamlmklib if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlmklib", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlmklib; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLMKLIB+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLMKLIB"; then ac_cv_prog_OCAMLMKLIB="$OCAMLMKLIB" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLMKLIB="${ac_tool_prefix}ocamlmklib" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLMKLIB=$ac_cv_prog_OCAMLMKLIB if test -n "$OCAMLMKLIB"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLMKLIB" >&5 printf "%s\n" "$OCAMLMKLIB" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLMKLIB"; then ac_ct_OCAMLMKLIB=$OCAMLMKLIB # Extract the first word of "ocamlmklib", so it can be a program name with args. set dummy ocamlmklib; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLMKLIB+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLMKLIB"; then ac_cv_prog_ac_ct_OCAMLMKLIB="$ac_ct_OCAMLMKLIB" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLMKLIB="ocamlmklib" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLMKLIB=$ac_cv_prog_ac_ct_OCAMLMKLIB if test -n "$ac_ct_OCAMLMKLIB"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLMKLIB" >&5 printf "%s\n" "$ac_ct_OCAMLMKLIB" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLMKLIB" = x; then OCAMLMKLIB="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLMKLIB=$ac_ct_OCAMLMKLIB fi else OCAMLMKLIB="$ac_cv_prog_OCAMLMKLIB" fi # checking for ocamldoc if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamldoc", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamldoc; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLDOC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLDOC"; then ac_cv_prog_OCAMLDOC="$OCAMLDOC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLDOC="${ac_tool_prefix}ocamldoc" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLDOC=$ac_cv_prog_OCAMLDOC if test -n "$OCAMLDOC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLDOC" >&5 printf "%s\n" "$OCAMLDOC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLDOC"; then ac_ct_OCAMLDOC=$OCAMLDOC # Extract the first word of "ocamldoc", so it can be a program name with args. set dummy ocamldoc; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLDOC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLDOC"; then ac_cv_prog_ac_ct_OCAMLDOC="$ac_ct_OCAMLDOC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLDOC="ocamldoc" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLDOC=$ac_cv_prog_ac_ct_OCAMLDOC if test -n "$ac_ct_OCAMLDOC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLDOC" >&5 printf "%s\n" "$ac_ct_OCAMLDOC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLDOC" = x; then OCAMLDOC="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLDOC=$ac_ct_OCAMLDOC fi else OCAMLDOC="$ac_cv_prog_OCAMLDOC" fi # checking for ocamlbuild if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlbuild", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlbuild; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLBUILD+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLBUILD"; then ac_cv_prog_OCAMLBUILD="$OCAMLBUILD" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLBUILD="${ac_tool_prefix}ocamlbuild" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLBUILD=$ac_cv_prog_OCAMLBUILD if test -n "$OCAMLBUILD"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLBUILD" >&5 printf "%s\n" "$OCAMLBUILD" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLBUILD"; then ac_ct_OCAMLBUILD=$OCAMLBUILD # Extract the first word of "ocamlbuild", so it can be a program name with args. set dummy ocamlbuild; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLBUILD+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLBUILD"; then ac_cv_prog_ac_ct_OCAMLBUILD="$ac_ct_OCAMLBUILD" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLBUILD="ocamlbuild" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLBUILD=$ac_cv_prog_ac_ct_OCAMLBUILD if test -n "$ac_ct_OCAMLBUILD"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLBUILD" >&5 printf "%s\n" "$ac_ct_OCAMLBUILD" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLBUILD" = x; then OCAMLBUILD="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLBUILD=$ac_ct_OCAMLBUILD fi else OCAMLBUILD="$ac_cv_prog_OCAMLBUILD" fi # checking for ocamlfind if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ocamlfind", so it can be a program name with args. set dummy ${ac_tool_prefix}ocamlfind; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_OCAMLFIND+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$OCAMLFIND"; then ac_cv_prog_OCAMLFIND="$OCAMLFIND" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_OCAMLFIND="${ac_tool_prefix}ocamlfind" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi OCAMLFIND=$ac_cv_prog_OCAMLFIND if test -n "$OCAMLFIND"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLFIND" >&5 printf "%s\n" "$OCAMLFIND" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi fi if test -z "$ac_cv_prog_OCAMLFIND"; then ac_ct_OCAMLFIND=$OCAMLFIND # Extract the first word of "ocamlfind", so it can be a program name with args. set dummy ocamlfind; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_ac_ct_OCAMLFIND+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$ac_ct_OCAMLFIND"; then ac_cv_prog_ac_ct_OCAMLFIND="$ac_ct_OCAMLFIND" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_OCAMLFIND="ocamlfind" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi ;; esac fi ac_ct_OCAMLFIND=$ac_cv_prog_ac_ct_OCAMLFIND if test -n "$ac_ct_OCAMLFIND"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OCAMLFIND" >&5 printf "%s\n" "$ac_ct_OCAMLFIND" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$ac_ct_OCAMLFIND" = x; then OCAMLFIND="no" else case $cross_compiling:$ac_tool_warned in yes:) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OCAMLFIND=$ac_ct_OCAMLFIND fi else OCAMLFIND="$ac_cv_prog_OCAMLFIND" fi OCAML_WARN_ERROR="-warn-error +C+D+E+F+L+M+P+S+U+V+Y+Z+X+52-3" OCAML_FLAGS="-g -annot -safe-string" # Check whether --enable-ocaml was given. if test ${enable_ocaml+y} then : enableval=$enable_ocaml; else case e in #( e) enable_ocaml=yes ;; esac fi if test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes"; then HAVE_OCAML_TRUE= HAVE_OCAML_FALSE='#' else HAVE_OCAML_TRUE='#' HAVE_OCAML_FALSE= fi if test "x$OCAMLOPT" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes"; then HAVE_OCAMLOPT_TRUE= HAVE_OCAMLOPT_FALSE='#' else HAVE_OCAMLOPT_TRUE='#' HAVE_OCAMLOPT_FALSE= fi if test "x$OCAMLDOC" != "xno" && test "x$enable_ocaml" = "xyes"; then HAVE_OCAMLDOC_TRUE= HAVE_OCAMLDOC_FALSE='#' else HAVE_OCAMLDOC_TRUE='#' HAVE_OCAMLDOC_FALSE= fi if test "x$OCAMLC" != "xno"; then HAVE_OCAMLC_TRUE= HAVE_OCAMLC_FALSE='#' else HAVE_OCAMLC_TRUE='#' HAVE_OCAMLC_FALSE= fi if test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes" then : ocaml_ver_str=4.05 ocaml_min_major=4 ocaml_min_minor=5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if OCaml version >= $ocaml_ver_str" >&5 printf %s "checking if OCaml version >= $ocaml_ver_str... " >&6; } ocaml_major="`echo $OCAMLVERSION | $AWK -F. '{print $1}'`" ocaml_minor="`echo $OCAMLVERSION | $AWK -F. '{print $2}' | sed 's/^0//'`" if test "$ocaml_major" -ge $((ocaml_min_major+1)) || ( test "$ocaml_major" -eq $ocaml_min_major && test "$ocaml_minor" -ge $ocaml_min_minor ) then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes ($ocaml_major, $ocaml_minor)" >&5 printf "%s\n" "yes ($ocaml_major, $ocaml_minor)" >&6; } else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;} as_fn_error $? "OCaml compiler is not new enough. At least OCaml $ocaml_ver_str is required See 'config.log' for more details" "$LINENO" 5; } ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking what OCaml packages need to be linked in" >&5 printf %s "checking what OCaml packages need to be linked in... " >&6; } if test "$ocaml_major" -ge 5 then : OCAMLFIND_PACKAGES="unix" else case e in #( e) OCAMLFIND_PACKAGES="unix,bigarray" ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $OCAMLFIND_PACKAGES" >&5 printf "%s\n" "$OCAMLFIND_PACKAGES" >&6; } fi if test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes" then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for caml_alloc_custom_mem" >&5 printf %s "checking for caml_alloc_custom_mem... " >&6; } cat >conftest.c <<'EOF' #include int main () { char *p = (void *)caml_alloc_custom_mem; return 0; } EOF if $OCAMLC conftest.c >&5 2>&1 then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "%s\n" "#define HAVE_CAML_ALLOC_CUSTOM_MEM 1" >>confdefs.h else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } ;; esac fi rm -f conftest.c conftest.o fi if test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes" then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for caml_alloc_initialized_string" >&5 printf %s "checking for caml_alloc_initialized_string... " >&6; } cat >conftest.c <<'EOF' #include int main () { char *p = (void *)caml_alloc_initialized_string; return 0; } EOF if $OCAMLC conftest.c >&5 2>&1 then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "%s\n" "#define HAVE_CAML_ALLOC_INITIALIZED_STRING 1" >>confdefs.h else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } ;; esac fi rm -f conftest.c conftest.o fi if test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes" then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for caml_unix_get_sockaddr" >&5 printf %s "checking for caml_unix_get_sockaddr... " >&6; } cat >conftest.c <<'EOF' #include #include int main () { char *p = (void *)caml_unix_get_sockaddr; return 0; } EOF if $OCAMLC conftest.c >&5 2>&1 then : { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } printf "%s\n" "#define HAVE_CAML_UNIX_GET_SOCKADDR 1" >>confdefs.h else case e in #( e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } ;; esac fi rm -f conftest.c conftest.o fi PYTHON_PREFIX= PYTHON_VERSION= PYTHON_INSTALLDIR= # Check whether --enable-python was given. if test ${enable_python+y} then : enableval=$enable_python; else case e in #( e) enable_python=yes ;; esac fi if test "x$enable_python" != "xno" then : # Extract the first word of "python3", so it can be a program name with args. set dummy python3; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_PYTHON+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$PYTHON"; then ac_cv_prog_PYTHON="$PYTHON" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_PYTHON="python3" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS test -z "$ac_cv_prog_PYTHON" && ac_cv_prog_PYTHON="no" fi ;; esac fi PYTHON=$ac_cv_prog_PYTHON if test -n "$PYTHON"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PYTHON" >&5 printf "%s\n" "$PYTHON" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$PYTHON" != "xno"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking Python version" >&5 printf %s "checking Python version... " >&6; } PYTHON_VERSION_MAJOR=`$PYTHON -c "import sys; print (sys.version_info[0])"` PYTHON_VERSION_MINOR=`$PYTHON -c "import sys; print (sys.version_info[1])"` PYTHON_VERSION="$PYTHON_VERSION_MAJOR.$PYTHON_VERSION_MINOR" { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PYTHON_VERSION" >&5 printf "%s\n" "$PYTHON_VERSION" >&6; } # Debian: python-3.2.pc pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for python-\"$PYTHON_VERSION\"" >&5 printf %s "checking for python-\"$PYTHON_VERSION\"... " >&6; } if test -n "$PYTHON_CFLAGS"; then pkg_cv_PYTHON_CFLAGS="$PYTHON_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"python-\"\$PYTHON_VERSION\"\""; } >&5 ($PKG_CONFIG --exists --print-errors "python-"$PYTHON_VERSION"") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_PYTHON_CFLAGS=`$PKG_CONFIG --cflags "python-"$PYTHON_VERSION"" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$PYTHON_LIBS"; then pkg_cv_PYTHON_LIBS="$PYTHON_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"python-\"\$PYTHON_VERSION\"\""; } >&5 ($PKG_CONFIG --exists --print-errors "python-"$PYTHON_VERSION"") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_PYTHON_LIBS=`$PKG_CONFIG --libs "python-"$PYTHON_VERSION"" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then PYTHON_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "python-"$PYTHON_VERSION"" 2>&1` else PYTHON_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "python-"$PYTHON_VERSION"" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$PYTHON_PKG_ERRORS" >&5 pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for python" >&5 printf %s "checking for python... " >&6; } if test -n "$PYTHON_CFLAGS"; then pkg_cv_PYTHON_CFLAGS="$PYTHON_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"python\""; } >&5 ($PKG_CONFIG --exists --print-errors "python") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_PYTHON_CFLAGS=`$PKG_CONFIG --cflags "python" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$PYTHON_LIBS"; then pkg_cv_PYTHON_LIBS="$PYTHON_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"python\""; } >&5 ($PKG_CONFIG --exists --print-errors "python") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_PYTHON_LIBS=`$PKG_CONFIG --libs "python" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then PYTHON_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "python" 2>&1` else PYTHON_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "python" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$PYTHON_PKG_ERRORS" >&5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: python $PYTHON_VERSION not found" >&5 printf "%s\n" "$as_me: WARNING: python $PYTHON_VERSION not found" >&2;} elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: python $PYTHON_VERSION not found" >&5 printf "%s\n" "$as_me: WARNING: python $PYTHON_VERSION not found" >&2;} else PYTHON_CFLAGS=$pkg_cv_PYTHON_CFLAGS PYTHON_LIBS=$pkg_cv_PYTHON_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } have_python_module=1 printf "%s\n" "#define HAVE_PYTHON 1" >>confdefs.h fi elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } pkg_failed=no { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for python" >&5 printf %s "checking for python... " >&6; } if test -n "$PYTHON_CFLAGS"; then pkg_cv_PYTHON_CFLAGS="$PYTHON_CFLAGS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"python\""; } >&5 ($PKG_CONFIG --exists --print-errors "python") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_PYTHON_CFLAGS=`$PKG_CONFIG --cflags "python" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test -n "$PYTHON_LIBS"; then pkg_cv_PYTHON_LIBS="$PYTHON_LIBS" elif test -n "$PKG_CONFIG"; then if test -n "$PKG_CONFIG" && \ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"python\""; } >&5 ($PKG_CONFIG --exists --print-errors "python") 2>&5 ac_status=$? printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then pkg_cv_PYTHON_LIBS=`$PKG_CONFIG --libs "python" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes else pkg_failed=yes fi else pkg_failed=untried fi if test $pkg_failed = yes; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi if test $_pkg_short_errors_supported = yes; then PYTHON_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "python" 2>&1` else PYTHON_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "python" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$PYTHON_PKG_ERRORS" >&5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: python $PYTHON_VERSION not found" >&5 printf "%s\n" "$as_me: WARNING: python $PYTHON_VERSION not found" >&2;} elif test $pkg_failed = untried; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: python $PYTHON_VERSION not found" >&5 printf "%s\n" "$as_me: WARNING: python $PYTHON_VERSION not found" >&2;} else PYTHON_CFLAGS=$pkg_cv_PYTHON_CFLAGS PYTHON_LIBS=$pkg_cv_PYTHON_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } have_python_module=1 printf "%s\n" "#define HAVE_PYTHON 1" >>confdefs.h fi else PYTHON_CFLAGS=$pkg_cv_PYTHON_CFLAGS PYTHON_LIBS=$pkg_cv_PYTHON_LIBS { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5 printf "%s\n" "yes" >&6; } have_python_module=1 printf "%s\n" "#define HAVE_PYTHON 1" >>confdefs.h fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking Python prefix" >&5 printf %s "checking Python prefix... " >&6; } PYTHON_PREFIX=`$PYTHON -c "import sys; print (sys.prefix)"` { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PYTHON_PREFIX" >&5 printf "%s\n" "$PYTHON_PREFIX" >&6; } # Check whether --with-python-installdir was given. if test ${with_python_installdir+y} then : withval=$with_python_installdir; PYTHON_INSTALLDIR="$withval" { printf "%s\n" "$as_me:${as_lineno-$LINENO}: Python install dir $PYTHON_INSTALLDIR" >&5 printf "%s\n" "$as_me: Python install dir $PYTHON_INSTALLDIR" >&6;} else case e in #( e) PYTHON_INSTALLDIR=check ;; esac fi if test "x$PYTHON_INSTALLDIR" = "xcheck"; then PYTHON_INSTALLDIR= { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for Python site-packages path" >&5 printf %s "checking for Python site-packages path... " >&6; } if test -z "$PYTHON_INSTALLDIR"; then PYTHON_INSTALLDIR=`$PYTHON -c "import sysconfig; \ print (sysconfig.get_path('platlib'));"` fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PYTHON_INSTALLDIR" >&5 printf "%s\n" "$PYTHON_INSTALLDIR" >&6; } fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for Python extension suffix (PEP-3149)" >&5 printf %s "checking for Python extension suffix (PEP-3149)... " >&6; } if test -z "$PYTHON_EXT_SUFFIX"; then python_ext_suffix=`$PYTHON -c "import sysconfig; \ print (sysconfig.get_config_var('EXT_SUFFIX') or sysconfig.get_config_var('SO'))"` PYTHON_EXT_SUFFIX=$python_ext_suffix fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PYTHON_EXT_SUFFIX" >&5 printf "%s\n" "$PYTHON_EXT_SUFFIX" >&6; } fi fi if test "x$PYTHON" != "xno" && test "x$have_python_module" = "x1" ; then HAVE_PYTHON_TRUE= HAVE_PYTHON_FALSE='#' else HAVE_PYTHON_TRUE='#' HAVE_PYTHON_FALSE= fi # Check whether --enable-python-code-style was given. if test ${enable_python_code_style+y} then : enableval=$enable_python_code_style; enable_pycodestyle=$enableval else case e in #( e) enable_pycodestyle=no ;; esac fi if test "x$enable_pycodestyle" = "xyes"; then ENABLE_PYCODESTYLE_TRUE= ENABLE_PYCODESTYLE_FALSE='#' else ENABLE_PYCODESTYLE_TRUE='#' ENABLE_PYCODESTYLE_FALSE= fi # Check whether --enable-golang was given. if test ${enable_golang+y} then : enableval=$enable_golang; else case e in #( e) enable_golang=yes ;; esac fi if test "x$enable_golang" != "xno" then : # Extract the first word of "go", so it can be a program name with args. set dummy go; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_GOLANG+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$GOLANG"; then ac_cv_prog_GOLANG="$GOLANG" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_GOLANG="go" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS test -z "$ac_cv_prog_GOLANG" && ac_cv_prog_GOLANG="no" fi ;; esac fi GOLANG=$ac_cv_prog_GOLANG if test -n "$GOLANG"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $GOLANG" >&5 printf "%s\n" "$GOLANG" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi # Extract the first word of "gofmt", so it can be a program name with args. set dummy gofmt; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_GOFMT+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$GOFMT"; then ac_cv_prog_GOFMT="$GOFMT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_GOFMT="gofmt" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS test -z "$ac_cv_prog_GOFMT" && ac_cv_prog_GOFMT="no" fi ;; esac fi GOFMT=$ac_cv_prog_GOFMT if test -n "$GOFMT"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $GOFMT" >&5 printf "%s\n" "$GOFMT" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test "x$GOLANG" != "xno" then : $GOLANG version ||: { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $GOLANG major version" >&5 printf %s "checking for $GOLANG major version... " >&6; } GOLANG_MAJOR_VERSION=`$GOLANG version | $SED 's/.*go\([[:digit:]]*\).*/\1/g'` { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $GOLANG_MAJOR_VERSION" >&5 printf "%s\n" "$GOLANG_MAJOR_VERSION" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $GOLANG minor version" >&5 printf %s "checking for $GOLANG minor version... " >&6; } GOLANG_MINOR_VERSION=`$GOLANG version | $SED 's/.*go[[:digit:]]*\.\([[:digit:]]*\).*/\1/g'` { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $GOLANG_MINOR_VERSION" >&5 printf "%s\n" "$GOLANG_MINOR_VERSION" >&6; } { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if $GOLANG is usable" >&5 printf %s "checking if $GOLANG is usable... 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"$2" } feature () { feat="$1" shift if "$@"; then print "$feat" "yes" else print "$feat" "no" fi } echo "Optional library features:" echo feature "TLS support" test "x$HAVE_GNUTLS_TRUE" = "x" feature "NBD URI support" test "x$HAVE_LIBXML2_TRUE" = "x" feature "AF_VSOCK support" test "x$ac_cv_type_struct_sockaddr_vm" = "xyes" feature "FUSE support" test "x$HAVE_FUSE_TRUE" = "x" feature "ublk support" test "x$HAVE_UBLK_TRUE" = "x" feature "Manual pages" test "x$HAVE_POD_TRUE" = "x" feature "Bash tab completion" test "x$HAVE_BASH_COMPLETION_TRUE" = "x" echo echo "Language bindings:" echo feature "Go" test "x$HAVE_GOLANG_TRUE" = "x" feature "OCaml" test "x$HAVE_OCAML_TRUE" = "x" feature "Python" test "x$HAVE_PYTHON_TRUE" = "x" feature "Rust" test "x$HAVE_RUST_TRUE" = "x" echo echo "Server interoperability testing:" echo feature "qemu-nbd" test "x$HAVE_QEMU_NBD_TRUE" = "x" feature "qemu-storage-daemon" test "x$HAVE_QEMU_STORAGE_DAEMON_TRUE" = "x" feature "nbdkit" test "x$HAVE_NBDKIT_TRUE" = "x" feature "nbd-server" test "x$HAVE_NBD_SERVER_TRUE" = "x" echo echo "Examples:" echo feature "glib example" test "x$GLIB_LIBS" != "x" feature "libev example" test "x$LIBEV_LIBS" != "x" echo echo "If any optional component is configured ‘no’ when you expected ‘yes’" echo "then you should check the preceding messages and README." echo echo "Please report bugs back to the mailing list:" echo "https://lists.libguestfs.org" echo echo "Next you should type 'make' to build the package," echo "then 'make check' to run the tests." libnbd-1.20.3/configure.ac0000644000175000017500000007313714675532445011030 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA AC_INIT([libnbd],[1.20.3]) AC_CONFIG_MACRO_DIR([m4]) m4_ifdef([AC_USE_SYSTEM_EXTENSIONS],[], [m4_define([AC_USE_SYSTEM_EXTENSIONS],[])]) AC_USE_SYSTEM_EXTENSIONS AC_SYS_LARGEFILE dnl NB: Do not [quote] this parameter. AM_INIT_AUTOMAKE(foreign subdir-objects) LT_INIT AC_CANONICAL_HOST AC_PROG_LN_S AC_PROG_SED dnl Check for some commands used by the tests which should be the GNU dnl coreutils variants. On macOS these are prefixed with 'g' or 'gnu'. AC_CHECK_PROGS([REALPATH],[grealpath realpath],[realpath]) dnl Check for basic C environment. AC_PROG_CC AC_PROG_INSTALL AC_PROG_CPP AC_C_PROTOTYPES test "x$U" != "x" && AC_MSG_ERROR([Compiler not ANSI compliant]) AM_PROG_CC_C_O AX_PTHREAD dnl Defines WORDS_BIGENDIAN on big endian platforms. AC_C_BIGENDIAN dnl Check for C++ (optional, we just use this to test the header dnl can be included from C++ code). AC_PROG_CXX dnl The C++ compiler test is pretty useless because even if it fails dnl it sets CXX=g++. So test the compiler actually works. AC_MSG_CHECKING([if the C++ compiler really really works]) AS_IF([$CXX --version >&AS_MESSAGE_LOG_FD 2>&1],[have_cxx=yes],[have_cxx=no]) AC_MSG_RESULT([$have_cxx]) AM_CONDITIONAL([HAVE_CXX], [test "$have_cxx" = "yes"]) AC_ARG_ENABLE([gcc-warnings], [AS_HELP_STRING([--enable-gcc-warnings], [turn on lots of GCC warnings (for developers)])], [case $enableval in yes|no) ;; *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;; esac gcc_warnings=$enableval], [gcc_warnings=no] ) if test "x$gcc_warnings" = "xyes"; then # Enable normal GCC warnings and a few more: # - Warn about variable length arrays on stack. # - Warn about large stack frames (since we may be used from threads). WARNINGS_CFLAGS="-Wall -Werror" AC_C_COMPILE_FLAGS([WARNINGS_CFLAGS], [-Wvla -Wframe-larger-than=5000 -Wstack-usage=10000], [$CFLAGS -Werror]) AC_SUBST([WARNINGS_CFLAGS]) fi dnl Check for __builtin_*_overflow. We need the dummy parameters dnl else detection doesn't work correctly for some reason. AC_CHECK_DECLS([__builtin_add_overflow(int, int, int *), __builtin_mul_overflow(int, int, int *)], [], [], []) dnl Check for __auto_type (GCC extension). AC_MSG_CHECKING([if __auto_type is available in this compiler]) AC_COMPILE_IFELSE([ AC_LANG_SOURCE([[ static int test (int a) { __auto_type at = a; return at; } ]]) ],[ AC_MSG_RESULT([yes]) AC_DEFINE([HAVE_AUTO_TYPE],[1],[__auto_type is available]) ],[ AC_MSG_RESULT([no]) ] ) dnl Check sizeof long. AC_CHECK_SIZEOF(long) dnl Check for other headers, all optional. AC_CHECK_HEADERS([\ byteswap.h \ endian.h \ linux/fs.h \ linux/userfaultfd.h \ stdatomic.h \ sys/disk.h \ sys/disklabel.h \ sys/endian.h \ sys/ioctl.h \ sys/syscall.h]) AC_CHECK_HEADERS([linux/vm_sockets.h sys/vsock.h], [], [], [[ #include ]]) AC_CHECK_TYPES([struct sockaddr_vm], [], [], [[ #include #ifdef HAVE_LINUX_VM_SOCKETS_H #include #elif HAVE_SYS_VSOCK_H #include #endif #ifndef AF_VSOCK #error "no vsock support" #endif ]]) dnl Check for various libc functions, all optional. dnl dnl posix_fadvise helps to optimise linear reads and writes. dnl dnl When /proc/sys/kernel/core_pattern starts with a pipe (|) symbol, Linux dnl ignores "ulimit -c" and (equivalent) setrlimit(RLIMIT_CORE) actions, for dnl disabling core dumping. Only prctl() can be used then, for that purpose. dnl dnl strerrordesc_np (glibc only) is preferred over sys_errlist: dnl https://lists.fedoraproject.org/archives/list/glibc@lists.fedoraproject.org/thread/WJHGG2OO7ABNAYICGA5WQZ2Q34Q2FEHU/ AC_CHECK_FUNCS([\ posix_fadvise \ posix_memalign \ prctl \ strcasestr \ strerrordesc_np \ valloc]) dnl Check for sys_errlist (optional). AC_CHECK_DECLS([sys_errlist]) dnl Check for libdl/dlopen (optional - only used to test if the library dnl can be used with libdl). AC_CHECK_LIB([dl],[dlopen],[have_libdl=yes],[have_libdl=no]) AC_CHECK_HEADERS([dlfcn.h],[have_dlfcn=yes],[have_dlfcn=no]) AM_CONDITIONAL([HAVE_LIBDL], [test "x$have_libdl" = "xyes" && test "x$have_dlfcn" = "xyes"]) dnl Does this platform support libc_malloc_debug.so.0 (glibc >= 2.34)? AC_MSG_CHECKING([if this is glibc >= 2.34]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #if !defined(__GLIBC__) || __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 34) #error "not glibc 2.34" #endif ]])], [if (LD_PRELOAD=libc_malloc_debug.so.0 /bin/true) 2>&1 | grep .; then is_glibc_234='missing suitable libc_malloc_debug.so.0' else is_glibc_234=yes fi], [is_glibc_234=no] ) AC_MSG_RESULT([$is_glibc_234]) AM_CONDITIONAL([HAVE_GLIBC_234], [test "x$is_glibc_234" = "xyes"]) dnl Check for GnuTLS (optional, for TLS support). AC_ARG_WITH([gnutls], [AS_HELP_STRING([--without-gnutls], [disable use of gnutls @<:@default=check@:>@])], [], [with_gnutls=check]) AS_IF([test "$with_gnutls" != "no"],[ PKG_CHECK_MODULES([GNUTLS], [gnutls >= 3.5.18], [ printf "gnutls version is "; $PKG_CONFIG --modversion gnutls AC_SUBST([GNUTLS_CFLAGS]) AC_SUBST([GNUTLS_LIBS]) AC_DEFINE([HAVE_GNUTLS],[1],[gnutls found at compile time.]) ], [ AC_MSG_WARN([gnutls not found or < 3.5.18, TLS support will be disabled.]) ]) ]) AM_CONDITIONAL([HAVE_GNUTLS], [test "x$GNUTLS_LIBS" != "x"]) AS_IF([test "$GNUTLS_LIBS" != ""],[ AC_MSG_CHECKING([for default TLS session priority string]) AC_ARG_WITH([tls-priority], [AS_HELP_STRING([--with-tls-priority=...], [default TLS session priority string @<:@default=NORMAL@:>@])], [tls_priority=$withval], [tls_priority=NORMAL]) AC_MSG_RESULT([$tls_priority]) AC_DEFINE_UNQUOTED([TLS_PRIORITY],["$tls_priority"], [Default TLS session priority string]) # Check for working . This is only needed for # gnutls 3.7.9 and no other version (unfortunately used by Debian # 12 and others). In that release kTLS functionality was added to # incorrectly, before being moved to # in 3.8.0. breaks on # Windows, so we must make inclusion conditional. When we move # the minimum version of gnutls >= 3.8.0 we can get rid of this. old_CFLAGS="$CFLAGS" CFLAGS="$GNUTLS_CFLAGS $CFLAGS" AC_CHECK_HEADERS([gnutls/socket.h]) CFLAGS="$old_CFLAGS" # Check for APIs which may not be present. old_LIBS="$LIBS" LIBS="$GNUTLS_LIBS $LIBS" AC_CHECK_FUNCS([\ gnutls_transport_is_ktls_enabled \ ]) LIBS="$old_LIBS" ]) dnl certtool (part of GnuTLS) for testing TLS with certificates. AC_CHECK_PROG([CERTTOOL], [certtool], [certtool]) AM_CONDITIONAL([HAVE_CERTTOOL], [test "x$CERTTOOL" != "x"]) dnl psktool (part of GnuTLS) for testing Pre-Shared Keys (PSK). AC_CHECK_PROG([PSKTOOL], [psktool], [psktool]) AM_CONDITIONAL([HAVE_PSKTOOL], [test "x$PSKTOOL" != "x"]) dnl Check for libxml2 (optional, for NBD URI support) AC_ARG_WITH([libxml2], [AS_HELP_STRING([--without-libxml2], [disable use of libxml2 for URI support @<:@default=check@:>@])], [], [with_libxml2=check]) AS_IF([test "$with_libxml2" != "no"],[ PKG_CHECK_MODULES([LIBXML2], [libxml-2.0], [ printf "libxml2 version is "; $PKG_CONFIG --modversion libxml-2.0 AC_SUBST([LIBXML2_CFLAGS]) AC_SUBST([LIBXML2_LIBS]) AC_DEFINE([HAVE_LIBXML2],[1],[libxml2 found at compile time.]) ], [ AC_MSG_WARN([libxml2 not found, NBD URI support will be disabled.]) ]) ]) AM_CONDITIONAL([HAVE_LIBXML2], [test "x$LIBXML2_LIBS" != "x"]) dnl nbdkit and some plugins are only needed to run the test suite. dnl dnl List the minimum version and plugins which are used by C code, dnl because shell script tests can use 'requires' tests. nbdkit_min_minor="12" ;# 1.12 nbdkit_plugins="file memory null pattern sh" AC_CHECK_PROG([NBDKIT], [nbdkit], [nbdkit]) AS_IF([test "x$NBDKIT" != "x"], [ have_nbdkit_features=yes AC_MSG_CHECKING([for nbdkit >= 1.$nbdkit_min_minor]) nbdkit_minor="$( $NBDKIT --version | $SED 's/^nbdkit 1\.\(@<:@0-9@:>@*\)\..*/\1/' )" AS_IF([test $nbdkit_minor -ge $nbdkit_min_minor],[ AC_MSG_RESULT([yes (1.$nbdkit_minor)]) printf "nbdkit version is "; $NBDKIT --version ],[ AC_MSG_RESULT([no (1.$nbdkit_minor)]) AC_MSG_WARN([nbdkit is too old, some tests will be disabled]) have_nbdkit_features=no ]) for p in $nbdkit_plugins; do AC_MSG_CHECKING([for nbdkit $p plugin]) AS_IF([$NBDKIT $p --version >&AS_MESSAGE_LOG_FD 2>&1], [ AC_MSG_RESULT([yes]) ],[ AC_MSG_RESULT([no]) AC_MSG_WARN([nbdkit $p plugin is missing, some tests will be disabled]) have_nbdkit_features=no ]) done AC_DEFINE_UNQUOTED([NBDKIT],["$NBDKIT"], [The name of nbdkit server (optional)]) ]) AM_CONDITIONAL([HAVE_NBDKIT], [test "x$NBDKIT" != "x" && test "x$have_nbdkit_features" = "xyes"]) dnl nbd-server, qemu-nbd and qemu-storage-daemon for interop testing. AC_CHECK_PROG([NBD_SERVER], [nbd-server], [nbd-server]) AM_CONDITIONAL([HAVE_NBD_SERVER], [test "x$NBD_SERVER" != "x"]) AS_IF([test "x$NBD_SERVER" != "x"], [ AC_DEFINE_UNQUOTED([NBD_SERVER],["$NBD_SERVER"], [The name of nbd-server (optional)]) printf "nbd-server version is "; $NBD_SERVER --version | head -1 ]) AC_CHECK_PROG([QEMU_NBD], [qemu-nbd], [qemu-nbd]) AM_CONDITIONAL([HAVE_QEMU_NBD], [test "x$QEMU_NBD" != "x"]) AS_IF([test "x$QEMU_NBD" != "x"], [ AC_DEFINE_UNQUOTED([QEMU_NBD],["$QEMU_NBD"], [The name of qemu-nbd (optional)]) printf "qemu-nbd version is "; $QEMU_NBD --version | head -1 ]) AC_CHECK_PROG([QEMU_STORAGE_DAEMON], [qemu-storage-daemon], [qemu-storage-daemon]) AM_CONDITIONAL([HAVE_QEMU_STORAGE_DAEMON], [test "x$QEMU_STORAGE_DAEMON" != "x"]) dnl glib2 main loop for examples that interoperate with the glib main loop. PKG_CHECK_MODULES([GLIB], [glib-2.0], [ printf "glib2 version is "; $PKG_CONFIG --modversion glib-2.0 AC_SUBST([GLIB_CFLAGS]) AC_SUBST([GLIB_LIBS]) ],[ AC_MSG_WARN([glib2 not found, some examples will not be compiled]) ]) AM_CONDITIONAL([HAVE_GLIB], [test "x$GLIB_LIBS" != "x"]) dnl libev support for examples that interoperate with libev event loop. PKG_CHECK_MODULES([LIBEV], [libev], [ printf "libev version is "; $PKG_CONFIG --modversion libev AC_SUBST([LIBEV_CFLAGS]) AC_SUBST([LIBEV_LIBS]) ],[ dnl no pkg-config for libev, searching manually: AC_CHECK_HEADERS([ev.h], [ AC_CHECK_LIB([ev], [ev_time], [ AC_SUBST([LIBEV_LIBS], ["-lev"]) ], [ AC_MSG_WARN([libev not found, some examples will not be compiled]) ]) ],[ AC_MSG_WARN([ev.h not found, some examples will not be compiled]) ]) ]) AS_IF([test "x$LIBEV_LIBS" != "x"], [ old_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS $LIBEV_CFLAGS -Werror=strict-aliasing -O2" AC_MSG_CHECKING([if the compiler is new enough for good aliasing rules]) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([ #include static void cb (struct ev_loop *l, ev_timer *t, int e) { } static ev_timer timer; ], [ ev_timer_init (&timer, cb, 0, .1); ]) ], [ AC_MSG_RESULT([yes]) ], [ AC_MSG_RESULT([no]) LIBEV_CFLAGS="$LIBEV_CFLAGS -Wno-strict-aliasing" ]) CFLAGS="$old_CFLAGS" ]) AM_CONDITIONAL([HAVE_LIBEV], [test "x$LIBEV_LIBS" != "x"]) dnl FUSE 3 is optional to build the nbdfuse program. AC_ARG_ENABLE([fuse], AS_HELP_STRING([--disable-fuse], [disable FUSE (nbdfuse) support]), [], [enable_fuse=yes]) AS_IF([test "x$enable_fuse" != "xno"],[ PKG_CHECK_MODULES([FUSE],[fuse3],[ printf "fuse3 version is "; $PKG_CONFIG --modversion fuse3 AC_SUBST([FUSE_CFLAGS]) AC_SUBST([FUSE_LIBS]) AC_DEFINE([HAVE_FUSE],[1],[Define to 1 if you have FUSE.]) ],[ enable_fuse=no AC_MSG_WARN([FUSE 3 library and headers are missing, so optional nbdfuse program won't be built]) ]) ]) AM_CONDITIONAL([HAVE_FUSE],[test "x$enable_fuse" != "xno"]) dnl libublksrv is optional to build the nbdublk program. AC_ARG_ENABLE([ublk], AS_HELP_STRING([--disable-ublk], [disable ublk (nbdublk) support]), [], [enable_ublk=yes]) AS_IF([test "x$enable_ublk" != "xno"],[ PKG_CHECK_MODULES([UBLKSRV],[ublksrv],[ printf "ublksrv version is "; $PKG_CONFIG --modversion ublksrv AC_SUBST([UBLKSRV_CFLAGS]) AC_SUBST([UBLKSRV_LIBS]) AC_DEFINE([HAVE_UBLK],[1],[Define to 1 if you have ublk.]) ],[ enable_ublk=no AC_MSG_WARN([libublksrv (ublk server) library and headers are missing, so optional nbdublk program won't be built]) ]) ]) AM_CONDITIONAL([HAVE_UBLK],[test "x$enable_ublk" != "xno"]) dnl Check we have enough to run podwrapper. AC_CHECK_PROG([PERL],[perl],[perl],[no]) AS_IF([test "x$PERL" != "xno"],[ AC_MSG_CHECKING([if we have perl Pod::Man and Pod::Simple]) AS_IF([$PERL -MPod::Man -MPod::Simple -e 1 >&AS_MESSAGE_LOG_FD 2>&1],[ enable_pod=yes ],[ enable_pod=no ]) AC_MSG_RESULT([$enable_pod]) ]) AM_CONDITIONAL([HAVE_POD], [test "x$PERL" != "xno" && test "x$enable_pod" = "xyes"]) dnl Define the path to the podwrapper program. PODWRAPPER="$PERL $(pwd)/podwrapper.pl" AC_SUBST([PODWRAPPER]) dnl Build the libFuzzer test. See fuzzing/README. AC_ARG_ENABLE([libfuzzer], [AS_HELP_STRING([--enable-libfuzzer], [build the libFuzzer test (for developers)])], [], [enable_libfuzzer=no]) AM_CONDITIONAL([ENABLE_LIBFUZZER],[test "x$enable_libfuzzer" = "xyes"]) dnl Bash completion. AC_ARG_WITH([bash-completions], [AS_HELP_STRING([--without-bash-completions], [disable installing bash completions @<:@default=check@:>@])]) AS_IF([test "x$with_bash_completions" != xno], [ PKG_CHECK_MODULES([BASH_COMPLETION], [bash-completion >= 2.0], [ bash_completion=yes AC_MSG_CHECKING([for bash-completions directory]) m4_ifdef([PKG_CHECK_VAR],[ PKG_CHECK_VAR(bashcompdir, [bash-completion], [completionsdir]) ]) AS_IF([test -z "$bashcompdir"], [ bashcompdir="${sysconfdir}/bash_completion.d" ]) AC_MSG_RESULT([$bashcompdir]) AC_SUBST([bashcompdir]) ],[ bash_completion=no AC_MSG_WARN([bash-completion not installed]) ]) ]) AS_IF([test "x$bash_completion" = xno && test "x$with_bash_completions" = xyes], [ AC_MSG_ERROR([bash-completions requested but required packages not found]) ]) AM_CONDITIONAL([HAVE_BASH_COMPLETION],[test "x$bash_completion" = "xyes"]) dnl OCaml >= 4.05, required for running the generator when building dnl from git, or optional unless you want to build the OCaml bindings. AC_PROG_OCAML AC_PROG_FINDLIB dnl Flags we want to pass to every OCaml compiler call. OCAML_WARN_ERROR="-warn-error +C+D+E+F+L+M+P+S+U+V+Y+Z+X+52-3" AC_SUBST([OCAML_WARN_ERROR]) OCAML_FLAGS="-g -annot -safe-string" AC_SUBST([OCAML_FLAGS]) dnl Note this only disables the OCaml bindings. AC_ARG_ENABLE([ocaml], AS_HELP_STRING([--disable-ocaml], [disable OCaml language bindings]), [], [enable_ocaml=yes]) AM_CONDITIONAL([HAVE_OCAML], [test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes"]) AM_CONDITIONAL([HAVE_OCAMLOPT], [test "x$OCAMLOPT" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes"]) AM_CONDITIONAL([HAVE_OCAMLDOC], [test "x$OCAMLDOC" != "xno" && test "x$enable_ocaml" = "xyes"]) dnl HAVE_OCAMLC can be used to detect if we are able to run the dnl generator. We should NOT require ocamlfind for this. AM_CONDITIONAL([HAVE_OCAMLC], [test "x$OCAMLC" != "xno"]) dnl OCaml if present should be >= 4.05 AS_IF([test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes"],[ ocaml_ver_str=4.05 ocaml_min_major=4 ocaml_min_minor=5 AC_MSG_CHECKING([if OCaml version >= $ocaml_ver_str]) ocaml_major="`echo $OCAMLVERSION | $AWK -F. '{print $1}'`" ocaml_minor="`echo $OCAMLVERSION | $AWK -F. '{print $2}' | sed 's/^0//'`" AS_IF([test "$ocaml_major" -ge $((ocaml_min_major+1)) || ( test "$ocaml_major" -eq $ocaml_min_major && test "$ocaml_minor" -ge $ocaml_min_minor )],[ AC_MSG_RESULT([yes ($ocaml_major, $ocaml_minor)]) ],[ AC_MSG_RESULT([no]) AC_MSG_FAILURE([OCaml compiler is not new enough. At least OCaml $ocaml_ver_str is required]) ]) dnl Which packages do we need to link to OCaml code? dnl In OCaml >= 5, bigarray is part of the stdlib. AC_MSG_CHECKING([what OCaml packages need to be linked in]) AS_IF([test "$ocaml_major" -ge 5],[ OCAMLFIND_PACKAGES="unix" ],[ OCAMLFIND_PACKAGES="unix,bigarray" ]) AC_MSG_RESULT([$OCAMLFIND_PACKAGES]) AC_SUBST([OCAMLFIND_PACKAGES]) ]) dnl Check if OCaml has caml_alloc_custom_mem (added in OCaml 4.08). AS_IF([test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes"],[ AC_MSG_CHECKING([for caml_alloc_custom_mem]) cat >conftest.c <<'EOF' #include int main () { char *p = (void *)caml_alloc_custom_mem; return 0; } EOF AS_IF([$OCAMLC conftest.c >&AS_MESSAGE_LOG_FD 2>&1],[ AC_MSG_RESULT([yes]) AC_DEFINE([HAVE_CAML_ALLOC_CUSTOM_MEM],[1], [caml_alloc_custom_mem found at compile time.]) ],[ AC_MSG_RESULT([no]) ]) rm -f conftest.c conftest.o ]) dnl Check if OCaml has caml_alloc_initialized_string (added in OCaml 4.06). AS_IF([test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes"],[ AC_MSG_CHECKING([for caml_alloc_initialized_string]) cat >conftest.c <<'EOF' #include int main () { char *p = (void *)caml_alloc_initialized_string; return 0; } EOF AS_IF([$OCAMLC conftest.c >&AS_MESSAGE_LOG_FD 2>&1],[ AC_MSG_RESULT([yes]) AC_DEFINE([HAVE_CAML_ALLOC_INITIALIZED_STRING],[1], [caml_alloc_initialized_string found at compile time.]) ],[ AC_MSG_RESULT([no]) ]) rm -f conftest.c conftest.o ]) dnl Check if OCaml has caml_unix_get_sockaddr dnl (added in OCaml 4.14, previously called 'get_sockaddr'). AS_IF([test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && \ test "x$enable_ocaml" = "xyes"],[ AC_MSG_CHECKING([for caml_unix_get_sockaddr]) cat >conftest.c <<'EOF' #include #include int main () { char *p = (void *)caml_unix_get_sockaddr; return 0; } EOF AS_IF([$OCAMLC conftest.c >&AS_MESSAGE_LOG_FD 2>&1],[ AC_MSG_RESULT([yes]) AC_DEFINE([HAVE_CAML_UNIX_GET_SOCKADDR],[1], [caml_unix_get_sockaddr found at compile time.]) ],[ AC_MSG_RESULT([no]) ]) rm -f conftest.c conftest.o ]) dnl Python, optional for the Python bindings and shell. PYTHON_PREFIX= PYTHON_VERSION= PYTHON_INSTALLDIR= AC_ARG_ENABLE([python], AS_HELP_STRING([--disable-python], [disable Python 3 language bindings]), [], [enable_python=yes]) AS_IF([test "x$enable_python" != "xno"],[ AC_CHECK_PROG([PYTHON],[python3],[python3],[no]) if test "x$PYTHON" != "xno"; then AC_MSG_CHECKING([Python version]) PYTHON_VERSION_MAJOR=`$PYTHON -c "import sys; print (sys.version_info@<:@0@:>@)"` PYTHON_VERSION_MINOR=`$PYTHON -c "import sys; print (sys.version_info@<:@1@:>@)"` PYTHON_VERSION="$PYTHON_VERSION_MAJOR.$PYTHON_VERSION_MINOR" AC_MSG_RESULT([$PYTHON_VERSION]) # Debian: python-3.2.pc PKG_CHECK_MODULES([PYTHON], [python-"$PYTHON_VERSION"],[ have_python_module=1 AC_SUBST([PYTHON_CFLAGS]) AC_SUBST([PYTHON_LIBS]) AC_SUBST([PYTHON_VERSION]) AC_DEFINE([HAVE_PYTHON],[1],[Python library found at compile time]) ],[ PKG_CHECK_MODULES([PYTHON], [python],[ have_python_module=1 AC_SUBST([PYTHON_CFLAGS]) AC_SUBST([PYTHON_LIBS]) AC_SUBST([PYTHON_VERSION]) AC_DEFINE([HAVE_PYTHON],[1],[Python library found at compile time]) ],[ AC_MSG_WARN([python $PYTHON_VERSION not found]) ]) ]) AC_MSG_CHECKING([Python prefix]) PYTHON_PREFIX=`$PYTHON -c "import sys; print (sys.prefix)"` AC_MSG_RESULT([$PYTHON_PREFIX]) AC_ARG_WITH([python-installdir], [AS_HELP_STRING([--with-python-installdir=...], [directory to install python modules @<:@default=check@:>@])], [PYTHON_INSTALLDIR="$withval" AC_MSG_NOTICE([Python install dir $PYTHON_INSTALLDIR])], [PYTHON_INSTALLDIR=check]) if test "x$PYTHON_INSTALLDIR" = "xcheck"; then PYTHON_INSTALLDIR= AC_MSG_CHECKING([for Python site-packages path]) if test -z "$PYTHON_INSTALLDIR"; then PYTHON_INSTALLDIR=`$PYTHON -c "import sysconfig; \ print (sysconfig.get_path('platlib'));"` fi AC_MSG_RESULT([$PYTHON_INSTALLDIR]) fi AC_MSG_CHECKING([for Python extension suffix (PEP-3149)]) if test -z "$PYTHON_EXT_SUFFIX"; then python_ext_suffix=`$PYTHON -c "import sysconfig; \ print (sysconfig.get_config_var('EXT_SUFFIX') or sysconfig.get_config_var('SO'))"` PYTHON_EXT_SUFFIX=$python_ext_suffix fi AC_MSG_RESULT([$PYTHON_EXT_SUFFIX]) fi AC_SUBST(PYTHON_PREFIX) AC_SUBST(PYTHON_VERSION) AC_SUBST(PYTHON_INSTALLDIR) AC_SUBST(PYTHON_EXT_SUFFIX) ]) AM_CONDITIONAL([HAVE_PYTHON], [test "x$PYTHON" != "xno" && test "x$have_python_module" = "x1" ]) dnl Use --enable-python-code-style to enable flake8 tests. AC_ARG_ENABLE([python-code-style], [AS_HELP_STRING([--enable-python-code-style], [enable Python code style (flake8) checks (for developers)])], [enable_pycodestyle=$enableval], [enable_pycodestyle=no]) AM_CONDITIONAL([ENABLE_PYCODESTYLE],[test "x$enable_pycodestyle" = "xyes"]) dnl Golang. AC_ARG_ENABLE([golang], AS_HELP_STRING([--disable-golang], [disable Go language bindings]), [], [enable_golang=yes]) AS_IF([test "x$enable_golang" != "xno"],[ AC_CHECK_PROG([GOLANG],[go],[go],[no]) AC_CHECK_PROG([GOFMT],[gofmt],[gofmt],[no]) AS_IF([test "x$GOLANG" != "xno"],[ $GOLANG version ||: AC_MSG_CHECKING([for $GOLANG major version]) [GOLANG_MAJOR_VERSION=`$GOLANG version | $SED 's/.*go\([[:digit:]]*\).*/\1/g'`] AC_MSG_RESULT([$GOLANG_MAJOR_VERSION]) AC_SUBST([GOLANG_MAJOR_VERSION]) AC_MSG_CHECKING([for $GOLANG minor version]) [GOLANG_MINOR_VERSION=`$GOLANG version | $SED 's/.*go[[:digit:]]*\.\([[:digit:]]*\).*/\1/g'`] AC_MSG_RESULT([$GOLANG_MINOR_VERSION]) AC_SUBST([GOLANG_MINOR_VERSION]) AC_MSG_CHECKING([if $GOLANG is usable]) AS_IF([ ( cd $srcdir/golang/configure && $GOLANG run . 2>&AS_MESSAGE_LOG_FD 1>&2 && $GOLANG mod tidy 2>&AS_MESSAGE_LOG_FD 1>&2 ) ],[ AC_MSG_RESULT([yes]) ],[ AC_MSG_RESULT([no]) AC_MSG_WARN([golang ($GOLANG) is installed but not usable]) GOLANG=no ]) ]) ],[GOLANG=no]) AM_CONDITIONAL([HAVE_GOLANG],[test "x$GOLANG" != "xno"]) dnl Rust. AC_ARG_ENABLE([rust], AS_HELP_STRING([--disable-rust], [disable Rust language bindings]), [], [enable_rust=yes]) AS_IF([test "x$enable_rust" != "xno"],[ AC_CHECK_PROG([CARGO],[cargo],[cargo],[no]) AS_IF([test "x$CARGO" != "xno"],[ printf "cargo version is "; $CARGO --version ]) AC_CHECK_PROG([RUSTFMT],[rustfmt],[rustfmt],[no]) AS_IF([test "x$RUSTFMT" != "xno"],[ printf "rustfmt version is "; $RUSTFMT --version ]) AS_IF([test "x$CARGO" != "xno"],[ AC_MSG_CHECKING([if $CARGO is usable]) AS_IF([ ( cd $srcdir/rust/cargo_test && $CARGO test 2>&AS_MESSAGE_LOG_FD 1>&2 && $CARGO doc 2>&AS_MESSAGE_LOG_FD 1>&2 ) ],[ AC_MSG_RESULT([yes]) ],[ AC_MSG_RESULT([no]) AC_MSG_WARN([Rust ($CARGO) is installed but not usable]) CARGO=no ]) ]) ],[CARGO=no]) AM_CONDITIONAL([HAVE_RUST],[test "x$CARGO" != "xno"]) AC_MSG_CHECKING([for how to mark DSO non-deletable at runtime]) NODELETE= `$LD --help 2>&1 | grep -- "-z nodelete" >/dev/null` && \ NODELETE="-Wl,-z -Wl,nodelete" AC_MSG_RESULT([$NODELETE]) AC_SUBST([NODELETE]) AC_MSG_CHECKING([for how to set DSO symbol versions]) case $host_os in darwin*) VERSION_SCRIPT= ;; *) VERSION_SCRIPT="-Wl,--version-script=${srcdir}/libnbd.syms" ;; esac AC_MSG_RESULT([$VERSION_SCRIPT]) AC_SUBST([VERSION_SCRIPT]) dnl Produce output files. AC_CONFIG_HEADERS([config.h]) AC_CONFIG_FILES([podwrapper.pl], [chmod +x,-w podwrapper.pl]) AC_CONFIG_FILES([python/run-python-tests], [chmod +x,-w python/run-python-tests]) AC_CONFIG_FILES([run], [chmod +x,-w run]) AC_CONFIG_FILES([rust/run-tests.sh], [chmod +x,-w rust/run-tests.sh]) AC_CONFIG_FILES([sh/nbdsh], [chmod +x,-w sh/nbdsh]) AC_CONFIG_FILES([Makefile bash-completion/Makefile common/include/Makefile common/utils/Makefile copy/Makefile docs/Makefile dump/Makefile examples/Makefile fuse/Makefile fuzzing/Makefile generator/Makefile generator/config.ml golang/Makefile golang/examples/Makefile include/Makefile info/Makefile interop/Makefile interop/nbd-server.conf interop/nbd-server-tls.conf lib/Makefile lib/libnbd.pc lib/local/libnbd.pc ocaml/Makefile ocaml/META ocaml/examples/Makefile ocaml/tests/Makefile ocaml/tests/ocaml_test_config.ml python/Makefile rust/Makefile sh/Makefile tests/Makefile tests/functions.sh ublk/Makefile valgrind/Makefile]) AC_OUTPUT dnl Summary. echo echo echo "----------------------------------------------------------------------" echo "Thank you for downloading $PACKAGE_STRING" echo echo "This is how we have configured the optional components for you today:" echo print () { printf ' %.40s %s\n' \ "$1 ........................................" "$2" } feature () { feat="$1" shift if "$@"; then print "$feat" "yes" else print "$feat" "no" fi } echo "Optional library features:" echo feature "TLS support" test "x$HAVE_GNUTLS_TRUE" = "x" feature "NBD URI support" test "x$HAVE_LIBXML2_TRUE" = "x" feature "AF_VSOCK support" test "x$ac_cv_type_struct_sockaddr_vm" = "xyes" feature "FUSE support" test "x$HAVE_FUSE_TRUE" = "x" feature "ublk support" test "x$HAVE_UBLK_TRUE" = "x" feature "Manual pages" test "x$HAVE_POD_TRUE" = "x" feature "Bash tab completion" test "x$HAVE_BASH_COMPLETION_TRUE" = "x" echo echo "Language bindings:" echo feature "Go" test "x$HAVE_GOLANG_TRUE" = "x" feature "OCaml" test "x$HAVE_OCAML_TRUE" = "x" feature "Python" test "x$HAVE_PYTHON_TRUE" = "x" feature "Rust" test "x$HAVE_RUST_TRUE" = "x" echo echo "Server interoperability testing:" echo feature "qemu-nbd" test "x$HAVE_QEMU_NBD_TRUE" = "x" feature "qemu-storage-daemon" test "x$HAVE_QEMU_STORAGE_DAEMON_TRUE" = "x" feature "nbdkit" test "x$HAVE_NBDKIT_TRUE" = "x" feature "nbd-server" test "x$HAVE_NBD_SERVER_TRUE" = "x" echo echo "Examples:" echo feature "glib example" test "x$GLIB_LIBS" != "x" feature "libev example" test "x$LIBEV_LIBS" != "x" echo echo "If any optional component is configured ‘no’ when you expected ‘yes’" echo "then you should check the preceding messages and README." echo echo "Please report bugs back to the mailing list:" echo "https://lists.libguestfs.org" echo echo "Next you should type 'make' to build the package," echo "then 'make check' to run the tests." libnbd-1.20.3/aclocal.m40000644000175000017500000015377614675532454010412 # generated automatically by aclocal 1.16.5 -*- Autoconf -*- # Copyright (C) 1996-2021 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])]) m4_ifndef([AC_AUTOCONF_VERSION], [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.72],, [m4_warning([this file was generated for autoconf 2.72. You have another version of autoconf. It may work, but is not guaranteed to. If you have problems, you may need to regenerate the build system entirely. To do so, use the procedure documented by the package, typically 'autoreconf'.])]) # pkg.m4 - Macros to locate and use pkg-config. -*- Autoconf -*- # serial 12 (pkg-config-0.29.2) dnl Copyright © 2004 Scott James Remnant . dnl Copyright © 2012-2015 Dan Nicholson dnl dnl This program is free software; you can redistribute it and/or modify dnl it under the terms of the GNU General Public License as published by dnl the Free Software Foundation; either version 2 of the License, or dnl (at your option) any later version. dnl dnl This program is distributed in the hope that it will be useful, but dnl WITHOUT ANY WARRANTY; without even the implied warranty of dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU dnl General Public License for more details. dnl dnl You should have received a copy of the GNU General Public License dnl along with this program; if not, write to the Free Software dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA dnl 02111-1307, USA. dnl dnl As a special exception to the GNU General Public License, if you dnl distribute this file as part of a program that contains a dnl configuration script generated by Autoconf, you may include it under dnl the same distribution terms that you use for the rest of that dnl program. dnl PKG_PREREQ(MIN-VERSION) dnl ----------------------- dnl Since: 0.29 dnl dnl Verify that the version of the pkg-config macros are at least dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's dnl installed version of pkg-config, this checks the developer's version dnl of pkg.m4 when generating configure. dnl dnl To ensure that this macro is defined, also add: dnl m4_ifndef([PKG_PREREQ], dnl [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])]) dnl dnl See the "Since" comment for each macro you use to see what version dnl of the macros you require. m4_defun([PKG_PREREQ], [m4_define([PKG_MACROS_VERSION], [0.29.2]) m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1, [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])]) ])dnl PKG_PREREQ dnl PKG_PROG_PKG_CONFIG([MIN-VERSION]) dnl ---------------------------------- dnl Since: 0.16 dnl dnl Search for the pkg-config tool and set the PKG_CONFIG variable to dnl first found in the path. Checks that the version of pkg-config found dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is dnl used since that's the first version where most current features of dnl pkg-config existed. AC_DEFUN([PKG_PROG_PKG_CONFIG], [m4_pattern_forbid([^_?PKG_[A-Z_]+$]) m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$]) m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$]) AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) fi if test -n "$PKG_CONFIG"; then _pkg_min_version=m4_default([$1], [0.9.0]) AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) PKG_CONFIG="" fi fi[]dnl ])dnl PKG_PROG_PKG_CONFIG dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) dnl ------------------------------------------------------------------- dnl Since: 0.18 dnl dnl Check to see whether a particular set of modules exists. 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AC_DEFUN([PKG_INSTALLDIR], [m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])]) m4_pushdef([pkg_description], [pkg-config installation directory @<:@]pkg_default[@:>@]) AC_ARG_WITH([pkgconfigdir], [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],, [with_pkgconfigdir=]pkg_default) AC_SUBST([pkgconfigdir], [$with_pkgconfigdir]) m4_popdef([pkg_default]) m4_popdef([pkg_description]) ])dnl PKG_INSTALLDIR dnl PKG_NOARCH_INSTALLDIR([DIRECTORY]) dnl -------------------------------- dnl Since: 0.27 dnl dnl Substitutes the variable noarch_pkgconfigdir as the location where a dnl module should install arch-independent pkg-config .pc files. By dnl default the directory is $datadir/pkgconfig, but the default can be dnl changed by passing DIRECTORY. The user can override through the dnl --with-noarch-pkgconfigdir parameter. 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This macro is provided for backward compatibility; new code need not use it. */ #undef STDC_HEADERS /* Default TLS session priority string */ #undef TLS_PRIORITY /* Enable extensions on AIX, Interix, z/OS. */ #ifndef _ALL_SOURCE # undef _ALL_SOURCE #endif /* Enable general extensions on macOS. */ #ifndef _DARWIN_C_SOURCE # undef _DARWIN_C_SOURCE #endif /* Enable general extensions on Solaris. */ #ifndef __EXTENSIONS__ # undef __EXTENSIONS__ #endif /* Enable GNU extensions on systems that have them. */ #ifndef _GNU_SOURCE # undef _GNU_SOURCE #endif /* Enable X/Open compliant socket functions that do not require linking with -lxnet on HP-UX 11.11. */ #ifndef _HPUX_ALT_XOPEN_SOCKET_API # undef _HPUX_ALT_XOPEN_SOCKET_API #endif /* Identify the host operating system as Minix. This macro does not affect the system headers' behavior. A future release of Autoconf may stop defining this macro. */ #ifndef _MINIX # undef _MINIX #endif /* Enable general extensions on NetBSD. Enable NetBSD compatibility extensions on Minix. */ #ifndef _NETBSD_SOURCE # undef _NETBSD_SOURCE #endif /* Enable OpenBSD compatibility extensions on NetBSD. Oddly enough, this does nothing on OpenBSD. */ #ifndef _OPENBSD_SOURCE # undef _OPENBSD_SOURCE #endif /* Define to 1 if needed for POSIX-compatible behavior. */ #ifndef _POSIX_SOURCE # undef _POSIX_SOURCE #endif /* Define to 2 if needed for POSIX-compatible behavior. */ #ifndef _POSIX_1_SOURCE # undef _POSIX_1_SOURCE #endif /* Enable POSIX-compatible threading on Solaris. */ #ifndef _POSIX_PTHREAD_SEMANTICS # undef _POSIX_PTHREAD_SEMANTICS #endif /* Enable extensions specified by ISO/IEC TS 18661-5:2014. */ #ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__ # undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__ #endif /* Enable extensions specified by ISO/IEC TS 18661-1:2014. */ #ifndef __STDC_WANT_IEC_60559_BFP_EXT__ # undef __STDC_WANT_IEC_60559_BFP_EXT__ #endif /* Enable extensions specified by ISO/IEC TS 18661-2:2015. */ #ifndef __STDC_WANT_IEC_60559_DFP_EXT__ # undef __STDC_WANT_IEC_60559_DFP_EXT__ #endif /* Enable extensions specified by C23 Annex F. */ #ifndef __STDC_WANT_IEC_60559_EXT__ # undef __STDC_WANT_IEC_60559_EXT__ #endif /* Enable extensions specified by ISO/IEC TS 18661-4:2015. */ #ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__ # undef __STDC_WANT_IEC_60559_FUNCS_EXT__ #endif /* Enable extensions specified by C23 Annex H and ISO/IEC TS 18661-3:2015. */ #ifndef __STDC_WANT_IEC_60559_TYPES_EXT__ # undef __STDC_WANT_IEC_60559_TYPES_EXT__ #endif /* Enable extensions specified by ISO/IEC TR 24731-2:2010. */ #ifndef __STDC_WANT_LIB_EXT2__ # undef __STDC_WANT_LIB_EXT2__ #endif /* Enable extensions specified by ISO/IEC 24747:2009. */ #ifndef __STDC_WANT_MATH_SPEC_FUNCS__ # undef __STDC_WANT_MATH_SPEC_FUNCS__ #endif /* Enable extensions on HP NonStop. */ #ifndef _TANDEM_SOURCE # undef _TANDEM_SOURCE #endif /* Enable X/Open extensions. Define to 500 only if necessary to make mbstate_t available. */ #ifndef _XOPEN_SOURCE # undef _XOPEN_SOURCE #endif /* Version number of package */ #undef VERSION /* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most significant byte first (like Motorola and SPARC, unlike Intel). */ #if defined AC_APPLE_UNIVERSAL_BUILD # if defined __BIG_ENDIAN__ # define WORDS_BIGENDIAN 1 # endif #else # ifndef WORDS_BIGENDIAN # undef WORDS_BIGENDIAN # endif #endif /* Number of bits in a file offset, on hosts where this is settable. */ #undef _FILE_OFFSET_BITS /* Define to 1 on platforms where this makes off_t a 64-bit type. */ #undef _LARGE_FILES /* Number of bits in time_t, on hosts where this is settable. */ #undef _TIME_BITS /* Define to 1 on platforms where this makes time_t a 64-bit type. */ #undef __MINGW_USE_VC2005_COMPAT /* Define like PROTOTYPES; this can be used by system headers. */ #undef __PROTOTYPES libnbd-1.20.3/podwrapper.pl.in0000755000175000017500000004425514675532326011667 #!/usr/bin/env perl # podwrapper.pl # @configure_input@ # Copyright Red Hat # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # # * Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # * Neither the name of Red Hat nor the names of its contributors may be # used to endorse or promote products derived from this software without # specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. use warnings; use strict; #use Carp; #$SIG{ __DIE__ } = sub { Carp::confess( @_ ) }; use Pod::Usage; use Getopt::Long; use Pod::Man; use Pod::Simple; use Pod::Simple::Text; use Pod::Simple::XHTML; use File::Basename; # https://www.redhat.com/archives/libguestfs/2013-May/thread.html#00088 eval { $Text::Wrap::huge = "overflow" }; # All man page names must match this function. sub validate_name_field { local $_ = shift; $_ =~ m/^libnbd/ || $_ =~ m/^nbd/; } # The license for man pages in this package - see LICENSE below. my $package_license = "lgplv2plus"; =head1 NAME podwrapper.pl - generate documentation from POD input files =head1 SYNOPSIS EXTRA_DIST = foo.pod if HAVE_POD man_MANS = foo.1 CLEANFILES += $(man_MANS) foo.1: foo.pod $(PODWRAPPER) --section 1 --man $@ \ --html $(top_builddir)/html/$@.html \ $< endif HAVE_POD =head1 DESCRIPTION podwrapper.pl is a Perl script that generates various output formats from POD input files that this project uses for most documentation. You must specify one input file, and one or more output formats. The output options are I<--man>, I<--html> and I<--text> (see below). In C files, use a variation of the boilerplate shown in the L section above. For information about the POD format, see L. =head1 OPTIONS =over 4 =cut my $help; =item B<--help> Display brief help. =cut my $allow_long_lines; =item B<--allow-long-lines> Allow lines longer than 76 characters in the input. Use this if the man page is not written by hand. =cut my $html; =item B<--html> output.html Write a web page to F. If this option is not given, then no web page output is produced. =cut my @inserts; =item B<--insert> filename:__PATTERN__ In the input file, replace the literal text C<__PATTERN__> with the replacement file F. You can give this option multiple times. The contents of F are treated as POD. Compare and contrast with I<--verbatim>. Although it is conventional to use C<__...__> (double underscores) for patterns, in fact you can use any string as the pattern. =cut my $man; =item B<--man> output.n Write a man page to F (C is the manual section number). If this option is not given, then no man page output is produced. =cut my $name; =item B<--name> NAME Set the name of the man page. If not set, defaults to the basename of the input file. =cut my @replaces; =item B<--replace> __PATTERN__:CONTENT In the input file, replace the literal text C<__PATTERN__> with the literal replacement string . You can give this option multiple times. Although it is conventional to use C<__...__> (double underscores) for patterns, in fact you can use any string as the pattern. =cut my $section; =item B<--section> N Set the section of the man page (a number such as C<1> for command line utilities or C<3> for C API documentation). If not set, defaults to C<1>. =cut my $text; =item B<--text> output.txt Write a text file to F. If this option is not given, then no text output is produced. =cut my @verbatims; =item B<--verbatim> filename:__PATTERN__ In the input file, replace the literal text C<__PATTERN__> with the replacement file F. You can give this option multiple times. The contents of F are inserted as verbatim text, and are I interpreted as POD. Compare and contrast with I<--insert>. Although it is conventional to use C<__...__> (double underscores) for patterns, in fact you can use any string as the pattern. =cut # Clean up the program name. my $progname = $0; $progname =~ s{.*/}{}; # Parse options. GetOptions ("help|?" => \$help, "allow-long-lines" => \$allow_long_lines, "html=s" => \$html, "insert=s" => \@inserts, "man=s" => \$man, "name=s" => \$name, "replace=s" => \@replaces, "section=s" => \$section, "text=s" => \$text, "verbatim=s" => \@verbatims, ) or pod2usage (2); pod2usage (1) if $help; die "$progname: missing argument: podwrapper input.pod\n" unless @ARGV == 1; my $input = $ARGV[0]; # There should be at least one output. die "$progname: $input: no output format specified. Use --man and/or --html and/or --text.\n" unless defined $man || defined $html || defined $text; # Default for $name and $section. $name = basename ($input, ".pod") unless defined $name; $section = 1 unless defined $section; # Note that these @...@ are substituted by ./configure. my $abs_top_srcdir = "@abs_top_srcdir@"; my $abs_top_builddir = "@abs_top_builddir@"; my $package_name = "@PACKAGE_NAME@"; my $package_version = "@PACKAGE_VERSION@"; die "$progname: ./configure substitutions were not performed" unless $abs_top_srcdir && $abs_top_builddir && $package_name && $package_version; # Create a stable date (thanks Hilko Bengen). my $date; my $filename = "$abs_top_srcdir/.git"; if (!$date && -d $filename) { local $ENV{GIT_DIR} = $filename; $date = `git show -O/dev/null -s --format=format:%cs`; } if (!$date) { my ($day, $month, $year) = (gmtime($ENV{SOURCE_DATE_EPOCH} || time))[3,4,5]; $date = sprintf ("%04d-%02d-%02d", $year+1900, $month+1, $day); } # Create a release string. my $release = "$package_name-$package_version"; #print "input=$input\n"; #print "name=$name\n"; #print "section=$section\n"; #print "date=$date\n"; # Read the input. my $content = read_whole_file ($input); # Perform @inserts. foreach (@inserts) { my @a = split /:/, $_, 2; die "$progname: $input: no colon in parameter of --insert\n" unless @a >= 2; my $replacement = read_whole_file ($a[0]); my $oldcontent = $content; $content =~ s/$a[1]/$replacement/ge; die "$progname: $input: could not find pattern '$a[1]' in input file\n" if $content eq $oldcontent; } # Turn external links to this man page into simple cross-section links. $content =~ s,\QL<$name($section)/\E,L= 2; my $oldcontent = $content; $content =~ s/$a[0]/$a[1]/g; die "$progname: $input: could not find pattern '$a[0]' in input file\n" if $content eq $oldcontent; } # Perform @verbatims. foreach (@verbatims) { my @a = split /:/, $_, 2; die "$progname: $input: no colon in parameter of --verbatim\n" unless @a >= 2; my $replacement = read_verbatim_file ($a[0]); my $oldcontent = $content; $content =~ s/$a[1]/$replacement/ge; die "$progname: $input: could not find pattern '$a[1]' in input file\n" if $content eq $oldcontent; } # Check the content is valid UTF8. die "$progname: $input: is not valid utf8" unless utf8::is_utf8 ($content); # There should be no =encoding line present in the content. die "$progname: $input: =encoding must not be present in input\n" if $content =~ /^=encoding/m; # Don't permit trailing whitespace. die "$progname: $input: trailing whitespace in input\n" if $content =~ /[ \t]$/m; # We may add an encoding line, but this breaks RHEL 6-era Pod::Simple # with the error "Cannot decode string with wide characters". $content =~ s/^=(.*)/\n=encoding utf8\n\n=$1/m if $] >= 5.011; # Perl >= 5.11 # Verify sections present / not present. die "$progname: $input: missing NAME section\n" if $content !~ /^=head1 NAME/m; die "$progname: $input: missing DESCRIPTION section\n" if $content !~ /^=head1 DESCRIPTION/m; die "$progname: $input: missing AUTHOR or AUTHORS section\n" unless $content =~ /^=head1 AUTHOR/m; die "$progname: $input: missing SEE ALSO section\n" unless $content =~ /^=head1 SEE ALSO/m; die "$progname: $input: missing COPYRIGHT section\n" unless $content =~ /^=head1 COPYRIGHT/m; die "$progname: $input: BUGS is now added automatically, do not add it to the POD file\n" if $content =~ /^=head1 (REPORTING )?BUGS/m; die "$progname: $input: LICENSE is now added automatically, do not add it to the POD file\n" if $content =~ /^=head1 LICENSE/m; # Check NAME section conformity. my @lines = split /\n/, $content; my @name; foreach (@lines) { push @name, $_ if /^=head1 NAME/../^=head1 (?!NAME)/ } shift @name; # remove =head1 and empty line shift @name; # from beginning and end pop @name; pop @name; die "$progname: $input: empty NAME section\n" unless @name >= 1; die "$progname: $input: NAME doesn't start with $package_name\n" unless validate_name_field ($name[0]); die "$progname: $input: NAME doesn't match man page name\n" unless $name[0] =~ /\b$name\b.* - /; die "$progname: $input: NAME does not conform with Linux man pages standard\n" if $name[0] !~ m/- [a-z]/ || $name[@name-1] =~ m/\.$/; unless ($allow_long_lines) { # Check no over-long lines in the input. (As a special exception # this is permitted in verbatim sections or if the line contains a # URL). foreach (@lines) { die "$progname: $input: line too long:\n$_\n" if length $_ > 76 && substr ($_, 0, 1) ne ' ' && ! m/https?:/; } } # Check for bare URLs. They should probably be replaced by L<> links. # (Allow them in verbatim sections) # Older Perl did not support variable length lookbehind, hence the # eval here. my $re = eval ' qr/(? link\n" } } } # Add standard LICENSE section at the end. my $license_lgplv2plus = "\ This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA "; my $license_bsd = "\ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: =over 4 =item * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. =item * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. =item * Neither the name of Red Hat nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. =back THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. "; $content .= "\n=head1 LICENSE\n"; $content .= eval "\$license_$package_license"; # Check cross-references to other nbdkit man pages exist. my @xrefs = $content =~ /L<(nbd_.*?\([1-9]\))>/g; foreach (@xrefs) { # All documentation in section 3. if (m/^nbd_(.*)\(3\)$/) { my $name = $1; die "$progname: $input: cannot find cross reference for $_\n" unless -f "$abs_top_srcdir/docs/nbd_$name.pod" || -f "$abs_top_srcdir/docs/nbd_$name.3"; } else { die "$progname: $input: cannot find cross-reference for $_\n" } } # Output man page. SUBMAN: { package Podwrapper::Man; use vars qw(@ISA $VERSION); @ISA = qw(Pod::Man); $VERSION = $package_version; # Override the L<> method. sub cmd_l { my ($self, $attrs, $text) = @_; return $text; } } if ($man) { my $parser = Podwrapper::Man->new ( name => $name, release => $release, section => $section, center => uc $package_name, date => $date, stderr => 1, utf8 => 1 ); my $output; $parser->no_errata_section (1); $parser->complain_stderr (1); $parser->output_string (\$output); $parser->parse_string_document ($content) or die "$progname: could not parse input document"; open OUT, ">$man" or die "$progname: $man: $!"; print OUT $output or die "$progname: $man: $!"; close OUT or die "$progname: $man: $!"; if ($parser->any_errata_seen) { unlink $man; die "$input: errors or warnings in this POD file, see messages above\n" } #print "$progname: wrote $man\n"; } # Output HTML. SUBHTML: { # Subclass Pod::Simple::XHTML. See the documentation. package Podwrapper::XHTML; use vars qw(@ISA $VERSION); @ISA = qw(Pod::Simple::XHTML); $VERSION = $package_version; # Note this also allows links to related projects because they all # appear together under the http://libguestfs.org website. sub is_a_local_page { local $_ = shift; return 1 if /^Sys::Guestfs/; return 0 if /^virt-install/; return 1 if /^virt-/; return 1 if /^libguestf/; return 1 if /^guestf/; return 1 if /^guestmount/; return 1 if /^guestunmount/; return 1 if /^hivex/; return 1 if /^supermin/; return 1 if /^libnbd/; return 0 if /^nbd-server\(/ || /^nbd-client\(/; return 1 if /^nbd/; return 0; } sub resolve_man_page_link { my $self = shift; my $name = $_[0]; # eg. "foobar(3)", can be undef my $anchor = $_[1]; # eg. "SYNOPSIS", can be undef my $r = ""; if (defined $name) { return $self->SUPER::resolve_man_page_link (@_) unless is_a_local_page ($name); $name =~ s/\((.*)\)$/.$1/; $r .= "$name.html"; } $r .= "#" . $self->idify ($anchor, 1) if defined $anchor; $r; } } if ($html) { mkdir "$abs_top_builddir/html"; my $parser = Podwrapper::XHTML->new; my $output; $parser->no_errata_section (1); $parser->complain_stderr (1); $parser->force_title ($name[0]); # from @name above $parser->output_string (\$output); # Added in Pod::Simple 3.16, 2011-03-14. eval { $parser->html_charset ("UTF-8") }; $parser->html_css ("pod.css"); $parser->index (1); $parser->parse_string_document ($content); # Hack for Perl 5.16. $output =~ s{/>pod.css<}{/>\n<}; open OUT, ">$html" or die "$progname: $html: $!"; print OUT $output or die "$progname: $html: $!"; close OUT or die "$progname: $html: $!"; if ($parser->any_errata_seen) { unlink $html; die "$input: errors or warnings in this POD file, see messages above\n" } #print "$progname: wrote $html\n"; } # Output text. if ($text) { my $parser = Pod::Simple::Text->new; my $output; $parser->no_errata_section (1); $parser->complain_stderr (1); $parser->output_string (\$output); $parser->parse_string_document ($content); open OUT, ">$text" or die "$progname: $text: $!"; binmode OUT, ":utf8"; print OUT $output or die "$progname: $text: $!"; close OUT or die "$progname: $text: $!"; if ($parser->any_errata_seen) { unlink $text; die "$input: errors or warnings in this POD file, see messages above\n" } #print "$progname: wrote $text\n"; } sub read_whole_file { my $input = shift; local $/ = undef; open FILE, "<:encoding(UTF-8)", $input or die "$progname: $input: $!"; $_ = ; close FILE; $_; } sub read_verbatim_file { my $input = shift; my @r = (); open FILE, "<:encoding(UTF-8)", $input or die "$progname: $input: $!"; while () { chomp; if (length) { push @r, " $_" } else { push @r, "" } } close FILE; return join ("\n", @r) . "\n"; } =head1 SEE ALSO L, L. =head1 AUTHOR Richard W.M. Jones. =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/run.in0000755000175000017500000001151214525371754007664 #!/usr/bin/env bash # libnbd 'run' programs locally script # Copyright Red Hat # # @configure_input@ # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #---------------------------------------------------------------------- # With this script you can run libnbd programs without needing to # install libnbd first. You just have to do for example: # # ./run nbdsh # # or: # # ./run /path/to/my/libnbd/program # # or: # # ./run python # >>> import nbd # locally-compiled nbd module # # This works for any C program and most non-C bindings. # # You can also compile other projects against this uninstalled libnbd # tree if those projects are using pkgconf/pkg-config: # # ../libnbd/run ./configure # make #---------------------------------------------------------------------- # Function to intelligently prepend a path to an environment variable. # See http://stackoverflow.com/a/9631350 prepend() { eval $1="$2\${$1:+:\$$1}" } # Source and build directories (absolute paths so this works from any # directory). s="$(cd @abs_srcdir@ && pwd)" b="$(cd @abs_builddir@ && pwd)" # Set the PATH to contain all libnbd binaries. prepend PATH "$b/copy" prepend PATH "$b/dump" prepend PATH "$b/fuse" prepend PATH "$b/info" prepend PATH "$b/sh" prepend PATH "$b/ublk" export PATH # Set LD_LIBRARY_PATH and DYLD_LIBRARY_PATH to contain library. # For use of _DYLD_LIBRARY_PATH see sh/nbdsh. prepend LD_LIBRARY_PATH "$b/lib/.libs" prepend DYLD_LIBRARY_PATH "$b/lib/.libs" prepend _DYLD_LIBRARY_PATH "$b/lib/.libs" export LD_LIBRARY_PATH export DYLD_LIBRARY_PATH export _DYLD_LIBRARY_PATH # For Python. export PYTHON="@PYTHON@" prepend PYTHONPATH "$b/python/.libs" prepend PYTHONPATH "$b/python" prepend PYTHONPATH "$s/python" export PYTHONPATH # For OCaml. prepend CAML_LD_LIBRARY_PATH "$b/ocaml" export CAML_LD_LIBRARY_PATH # For golang. export GOLANG="@GOLANG@" if [ -z "$CGO_CFLAGS" ]; then CGO_CFLAGS="-I$s/include -I$b" else CGO_CFLAGS="$CGO_CFLAGS -I$s/include -I$b" fi export CGO_CFLAGS if [ -z "$CGO_LDFLAGS" ]; then CGO_LDFLAGS="-L$b/lib/.libs" else CGO_LDFLAGS="$CGO_LDFLAGS -L$b/lib/.libs" fi export CGO_LDFLAGS if [ -n "@GOLANG_MAJOR_VERSION@" ] && ( ( [ "@GOLANG_MAJOR_VERSION@" -eq 1 ] && [ "@GOLANG_MINOR_VERSION@" -ge 21 ] ) || [ "@GOLANG_MAJOR_VERSION@" -ge 2 ] ); then # cgocheck=1 "implements reasonably cheap dynamic checks" export GODEBUG=cgocheck=1,invalidptr=1 # cgocheck2 implements complete pointer checking. export GOEXPERIMENT=cgocheck2 else # golang <= 1.20 used this instead: export GODEBUG=cgocheck=2,invalidptr=1 fi # On failure, crash (giving us a useful core dump) instead of hiding that. export GOTRACEBACK=crash # Allow dependent packages to be compiled against local libnbd. prepend PKG_CONFIG_PATH "$b/lib/local" export PKG_CONFIG_PATH prepend OCAMLPATH "$b/ocaml" export OCAMLPATH # Do we have libtool? If we have it then we can use it to make # running valgrind simpler. However don't depend on it. if libtool --help >/dev/null 2>&1; then libtool="libtool --mode=execute" fi # Use valgrind? # # If we're running a binary then apply valgrind directly to it. # # If it's a shell script then we set $VG and the script must run any # valgrinded programs by using $VG explicitly (note this variable is # not set if not valgrinding). # # Unfortunately the obvious thing of running ‘file $1’ will not work # because of libtool, so we have to base this off the file extension. if [ "x$LIBNBD_VALGRIND" = "x1" ]; then _VG="valgrind --vgdb=no --leak-check=full --show-leak-kinds=all --error-exitcode=119 --suppressions=$b/valgrind/suppressions --trace-children=no --run-libc-freeres=no --num-callers=100" case "$1" in *.sh) VG="$libtool $_VG"; export VG ;; *) valgrind="$_VG" ;; esac # Don't invoke malloc debugging when we are valgrinding because # it duplicates work done by valgrind and might even hide issues. # # Originally this was a workaround for: # https://sourceware.org/bugzilla/show_bug.cgi?id=28256 unset GLIBC_TUNABLES fi # Avoid GNOME keyring stupidity export GNOME_KEYRING_CONTROL= export GNOME_KEYRING_PID= # Run the program. exec $libtool $valgrind "$@" libnbd-1.20.3/common-rules.mk0000644000175000017500000000233614525371754011502 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # common-rules.mk is included in every Makefile.am. # subdir-rules.mk is included only in subdirectories. # Convenient list terminator NULL = CLEANFILES = *~ $(generator_built): $(top_builddir)/generator/stamp-generator $(top_builddir)/generator/stamp-generator: \ $(wildcard $(top_srcdir)/generator/*.ml) \ $(wildcard $(top_srcdir)/generator/*.mli) \ $(wildcard $(top_srcdir)/generator/states*.c) $(MAKE) -C $(top_builddir)/generator stamp-generator libnbd-1.20.3/COPYING.LIB0000664000175000017500000006422714525371754010202 This is the general license covering libnbd. 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You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Also add information on how to contact you by electronic and paper mail. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the library, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the library `Frob' (a library for tweaking knobs) written by James Random Hacker. , 1 April 1990 Ty Coon, President of Vice That's all there is to it! libnbd-1.20.3/README.md0000644000175000017500000001347014675532262010010 ## NBD client library in userspace NBD — Network Block Device — is a protocol for accessing Block Devices (hard disks and disk-like things) over a Network. This is the NBD client library in userspace, a simple library for writing NBD clients. The key features are: * Synchronous API for ease of use. * Asynchronous API for writing non-blocking, multithreaded clients. You can mix both APIs freely. * High performance. * Minimal dependencies for the basic library. * Well-documented, stable API. * Bindings in several programming languages. * Shell (nbdsh) for command line and scripting. * Copying tool (nbdcopy) for high performance copying and streaming. * Hexdump tool (nbddump) to print NBD content. * Query tool (nbdinfo) to query NBD servers. * FUSE support (nbdfuse) to mount NBD in the local filesystem. * Linux ublk support (nbdublk) to create the userspace block device. For documentation, see the [docs](docs/) and [examples](examples/) subdirectories. ## License The software is Copyright Red Hat and licensed under the GNU Lesser General Public License version 2 or above (LGPLv2+). See the file [COPYING.LIB](COPYING.LIB) for details. The examples are under a very liberal license. ## Building from source To build from git: ``` autoreconf -i ./configure make make check ``` To build from tarball: ``` ./configure make make check ``` It is **not** normally recommended to use `make install` since it may partially overwrite any system-installed libnbd. It is better to run from the build directory using the [`./run` script](run.in), eg: ``` ./run nbdsh ``` You can install into a destdir (for packaging or moving to another machine) by doing: ``` make install DESTDIR=/var/tmp/some-directory ``` To run the tests under valgrind: ``` make check-valgrind ``` To run benchmarks: ``` make bench ``` Some tests require root permissions (and are therefore risky). If you want to run these tests, do: ``` sudo make check-root ``` On FreeBSD, OpenBSD and macOS which do not have GNU make by default you must use `gmake` instead of `make`. Requirements: * Linux, FreeBSD or OpenBSD. Other OSes may also work but we have only tested these three. * GCC or Clang * GNU make * bash Required for building from git, optional for building from tarballs: * OCaml (ocamlc, the bytecode compiler) is required to generate some source files, which is needed to build from git. However ocamlc is _not_ needed if building from the official tarballs from http://download.libguestfs.org/libnbd/ because those contain the generated files. Recommended - if not present, some features will be disabled: * GnuTLS is recommended for TLS support. If not available then you will not be able to access encrypted servers and some APIs related to TLS will always return an error. * libxml2 is recommended for NBD URI support. If not available then a few APIs related to URIs will always return an error, and the nbdinfo tool is not built. Optional: * Perl Pod::Man and Pod::Simple to generate the documentation. * OCaml >= 4.05 and ocamlfind are both needed to generate the OCaml bindings. * Python >= 3.3 to build the Python 3 bindings and NBD shell (nbdsh). * FUSE 3 to build the nbdfuse program. * Linux >= 6.0 and ublksrv library to build nbdublk program. * go and cgo >= 1.17, for compiling the golang bindings and tests. * cargo with a recent stable toolchain is required to build the Rust bindings. * bash-completion >= 1.99 for tab completion. Optional, only needed if running 'make dist' for a canonical tarball: * gofmt for canonical formatting of generated .go files. * rustfmt for canonical formatting of generated .rs files. Optional, only needed to run the test suite: * nbdkit >= 1.12, the nbdkit basic plugins and the nbdkit basic filters are recommended as they are needed to run the test suite. * nbdkit, nbd-server, qemu-nbd and qemu-storage-daemon if you want to do interoperability testing against these servers. * A C++ compiler is needed if you want to test that the library works from C++. * coreutils or standard Unix tools such as cmp, dd, stat, truncate. * libdl (dlopen, dlclose etc) to test this functionality. * qemu, qemu-io, qemu-img for interoperability testing. * certtool and psktool (part of GnuTLS) for testing TLS support. * valgrind if you want to run the tests under valgrind. * nbd-client and Linux nbd.ko for testing nbdcopy to/from devices. * flake8 to keep Python code formatted uniformly. * ss (from iproute) for TCP-based tests. * "sudo modprobe vsock_loopback" to run tests of AF_VSOCK (Linux-only). * libc_malloc_debug.so.0 (from glibc-utils) for enhanced testing of common malloc misuse. Optional, only needed to run some examples: * glib2 for examples that interoperate with the glib main loop. * libev for examples that interoperate with the libev library. ### Download tarballs Tarballs are available from: http://libguestfs.org/download/libnbd ## Developers Install the valgrind program and development headers. Use: ``` ./configure --enable-gcc-warnings --enable-python-code-style ``` When testing use: ``` make check make check-valgrind ``` Use the following one-time setup for nicer diffs of various files: ``` git config diff.ml.xfuncname '^(type|and|val|let) .*=' git config diff.ml-api.xfuncname '^(let .*=| "[^"]*", \{$)' git config diff.mli.xfuncname '^(type|and|val|module) ' git config diff.states.xfuncname '^([a-zA-Z_].*| [A-Z._0-9]*:$)' ``` For development ideas, see the [TODO](TODO) file. The upstream git repository is: https://gitlab.com/nbdkit/libnbd Patches are accepted either by email to the upstream mailing list: https://lists.libguestfs.org or by Merge Request on gitlab.com If you want to fuzz the library see [fuzzing/README](fuzzing/README). ## Other links * http://libguestfs.org/ * https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md * https://gitlab.com/nbdkit/nbdkit libnbd-1.20.3/TODO0000644000175000017500000000726714553005444007220 Explore if nbd_aio_notify_error is needed for faster response if server goes away. Bindings in other languages. - Latest attempt at adding Rust: https://www.redhat.com/archives/libguestfs/2019-August/msg00416.html Example code integrating with ppoll, pollfd, APR pollset (and others?). NBD resize extension. TLS should properly shut down the session (calling gnutls_bye). Potential deadlock with nbd_add_meta_context: if a client sends enough requests to the server that it blocks while writing, but the server replies to requests as they come in rather than waiting for the end of the client request, then the server can likewise block in writing replies that libnbd is not yet reading. Not an issue for existing servers that don't have enough contexts to reply with enough data to fill buffers, but could be an issue with qemu-nbd if it is taught to exports many dirty bitmaps simultaneously. Revamping the states-newstyle-meta-context.c state machine to let libnbd handle NBD_REP_META_CONTEXT while still writing queries could be hairy. Performance: Chart it over various buffer sizes and threads, as that should make it easier to identify systematic issues. Examine other fuzzers: https://gitlab.com/akihe/radamsa nbdcopy: - Enforce maximum block size. - Synchronous loop should be adjusted to take into account the NBD preferred block size, as was done for multi-thread loop. - Benchmark. - Better page cache usage, see nbdkit-file-plugin options fadvise=sequential cache=none. - Consider io_uring if there are performance bottlenecks. - Configurable retries in response to read or write failures. nbdfuse: - If you write beyond the end of the virtual file, it returns EIO. - Implement block_status. nbdinfo: - 'nbdinfo --map' needs --offset and --length parameters for mapping just a subset of the image - 'nbdinfo --map=context1 --map=context2' visiting two contexts in lock-step would be nice - 'nbdinfo --map' should consider probing all available contexts rather than just base:allocation Suggested API improvements: general: - synchronous APIs that have a timeout or can be cancelled connecting: - nbd_connect_tcp: allow control over whether IPv4 or IPv6 is desired - nbd_connect_uri: allow control over which features are enabled - nbd_connect_command: allow passing char **env - connection completed callback TLS: - should be individual APIs for setting each TLS file (set_tls_certificates can continue to exist) - TLS should have a way to pass in PIN or password to support encrypted keys - allow use of TLS memory APIs (gnutls_datum_t + gnutls_*_mem) - support PKCS11 URIs (RFC 7512) Easier server implementation testing: - a way to force NBD_OPT_EXPORT_NAME over NBD_OPT_GO - a way to send options before NBD_OPT_STARTTLS - a way to send unknown NBD_OPT or NBD_CMD subprocess - it should be possible to use nbd_close and never block, so maybe nbd_shutdown should wait for the subprocess or there should be another API to do this - capture error message when nbd_connect_command fails sockets - allow user to pass in their own socket functions, this would allow io_uring to be used OCaml: - Translate *error between OCaml Unix.error and C errno automatically using the functions in . This requires a change to the generator CBMutable (Int _) -> CBMutable (Errno _) which is quite a large change. Coding style: - consider replacing "#if defined (macro)" with "#if defined macro", or even just "#ifdef macro"; for shorter lines - investigate automatic code formatting tools (such a tool could be run in "check mode" in CI) Code sharing with nbdkit (header files, etc): - investigate a git submodule libnbd-1.20.3/compile0000755000175000017500000001635014603303676010103 #! /bin/sh # Wrapper for compilers which do not understand '-c -o'. scriptversion=2018-03-07.03; # UTC # Copyright (C) 1999-2021 Free Software Foundation, Inc. # Written by Tom Tromey . # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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The system name ranges from "MiNT" over "FreeMiNT" # to the lowercase version "mint" (or "freemint"). Finally # the system name "TOS" denotes a system which is actually not # MiNT. But MiNT is downward compatible to TOS, so this should # be no problem. atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) GUESS=m68k-atari-mint$UNAME_RELEASE ;; atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) GUESS=m68k-atari-mint$UNAME_RELEASE ;; *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) GUESS=m68k-atari-mint$UNAME_RELEASE ;; milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) GUESS=m68k-milan-mint$UNAME_RELEASE ;; hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) GUESS=m68k-hades-mint$UNAME_RELEASE ;; *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) GUESS=m68k-unknown-mint$UNAME_RELEASE ;; m68k:machten:*:*) GUESS=m68k-apple-machten$UNAME_RELEASE ;; powerpc:machten:*:*) GUESS=powerpc-apple-machten$UNAME_RELEASE ;; RISC*:Mach:*:*) GUESS=mips-dec-mach_bsd4.3 ;; RISC*:ULTRIX:*:*) GUESS=mips-dec-ultrix$UNAME_RELEASE ;; VAX*:ULTRIX*:*:*) GUESS=vax-dec-ultrix$UNAME_RELEASE ;; 2020:CLIX:*:* | 2430:CLIX:*:*) GUESS=clipper-intergraph-clix$UNAME_RELEASE ;; mips:*:*:UMIPS | mips:*:*:RISCos) set_cc_for_build sed 's/^ //' << EOF > "$dummy.c" #ifdef __cplusplus #include /* for printf() prototype */ int main (int argc, char *argv[]) { #else int main (argc, argv) int argc; char *argv[]; { #endif #if defined (host_mips) && defined (MIPSEB) #if defined (SYSTYPE_SYSV) printf ("mips-mips-riscos%ssysv\\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_SVR4) printf ("mips-mips-riscos%ssvr4\\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) printf ("mips-mips-riscos%sbsd\\n", argv[1]); exit (0); #endif #endif exit (-1); } EOF $CC_FOR_BUILD -o "$dummy" "$dummy.c" && dummyarg=`echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p'` && SYSTEM_NAME=`"$dummy" "$dummyarg"` && { echo "$SYSTEM_NAME"; exit; } GUESS=mips-mips-riscos$UNAME_RELEASE ;; Motorola:PowerMAX_OS:*:*) GUESS=powerpc-motorola-powermax ;; Motorola:*:4.3:PL8-*) GUESS=powerpc-harris-powermax ;; Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) GUESS=powerpc-harris-powermax ;; Night_Hawk:Power_UNIX:*:*) GUESS=powerpc-harris-powerunix ;; m88k:CX/UX:7*:*) GUESS=m88k-harris-cxux7 ;; m88k:*:4*:R4*) GUESS=m88k-motorola-sysv4 ;; m88k:*:3*:R3*) GUESS=m88k-motorola-sysv3 ;; AViiON:dgux:*:*) # DG/UX returns AViiON for all architectures UNAME_PROCESSOR=`/usr/bin/uname -p` if test "$UNAME_PROCESSOR" = mc88100 || test "$UNAME_PROCESSOR" = mc88110 then if test "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx || \ test "$TARGET_BINARY_INTERFACE"x = x then GUESS=m88k-dg-dgux$UNAME_RELEASE else GUESS=m88k-dg-dguxbcs$UNAME_RELEASE fi else GUESS=i586-dg-dgux$UNAME_RELEASE fi ;; M88*:DolphinOS:*:*) # DolphinOS (SVR3) GUESS=m88k-dolphin-sysv3 ;; M88*:*:R3*:*) # Delta 88k system running SVR3 GUESS=m88k-motorola-sysv3 ;; XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) GUESS=m88k-tektronix-sysv3 ;; Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) GUESS=m68k-tektronix-bsd ;; *:IRIX*:*:*) IRIX_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/g'` GUESS=mips-sgi-irix$IRIX_REL ;; ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. GUESS=romp-ibm-aix # uname -m gives an 8 hex-code CPU id ;; # Note that: echo "'`uname -s`'" gives 'AIX ' i*86:AIX:*:*) GUESS=i386-ibm-aix ;; ia64:AIX:*:*) if test -x /usr/bin/oslevel ; then IBM_REV=`/usr/bin/oslevel` else IBM_REV=$UNAME_VERSION.$UNAME_RELEASE fi GUESS=$UNAME_MACHINE-ibm-aix$IBM_REV ;; *:AIX:2:3) if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then set_cc_for_build sed 's/^ //' << EOF > "$dummy.c" #include main() { if (!__power_pc()) exit(1); puts("powerpc-ibm-aix3.2.5"); exit(0); } EOF if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` then GUESS=$SYSTEM_NAME else GUESS=rs6000-ibm-aix3.2.5 fi elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then GUESS=rs6000-ibm-aix3.2.4 else GUESS=rs6000-ibm-aix3.2 fi ;; *:AIX:*:[4567]) IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then IBM_ARCH=rs6000 else IBM_ARCH=powerpc fi if test -x /usr/bin/lslpp ; then IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | \ awk -F: '{ print $3 }' | sed s/[0-9]*$/0/` else IBM_REV=$UNAME_VERSION.$UNAME_RELEASE fi GUESS=$IBM_ARCH-ibm-aix$IBM_REV ;; *:AIX:*:*) GUESS=rs6000-ibm-aix ;; ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*) GUESS=romp-ibm-bsd4.4 ;; ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and GUESS=romp-ibm-bsd$UNAME_RELEASE # 4.3 with uname added to ;; # report: romp-ibm BSD 4.3 *:BOSX:*:*) GUESS=rs6000-bull-bosx ;; DPX/2?00:B.O.S.:*:*) GUESS=m68k-bull-sysv3 ;; 9000/[34]??:4.3bsd:1.*:*) GUESS=m68k-hp-bsd ;; hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) GUESS=m68k-hp-bsd4.4 ;; 9000/[34678]??:HP-UX:*:*) HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'` case $UNAME_MACHINE in 9000/31?) HP_ARCH=m68000 ;; 9000/[34]??) HP_ARCH=m68k ;; 9000/[678][0-9][0-9]) if test -x /usr/bin/getconf; then sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` case $sc_cpu_version in 523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0 528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1 532) # CPU_PA_RISC2_0 case $sc_kernel_bits in 32) HP_ARCH=hppa2.0n ;; 64) HP_ARCH=hppa2.0w ;; '') HP_ARCH=hppa2.0 ;; # HP-UX 10.20 esac ;; esac fi if test "$HP_ARCH" = ""; then set_cc_for_build sed 's/^ //' << EOF > "$dummy.c" #define _HPUX_SOURCE #include #include int main () { #if defined(_SC_KERNEL_BITS) long bits = sysconf(_SC_KERNEL_BITS); #endif long cpu = sysconf (_SC_CPU_VERSION); switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0"); break; case CPU_PA_RISC1_1: puts ("hppa1.1"); break; case CPU_PA_RISC2_0: #if defined(_SC_KERNEL_BITS) switch (bits) { case 64: puts ("hppa2.0w"); break; case 32: puts ("hppa2.0n"); break; default: puts ("hppa2.0"); break; } break; #else /* !defined(_SC_KERNEL_BITS) */ puts ("hppa2.0"); break; #endif default: puts ("hppa1.0"); break; } exit (0); } EOF (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null) && HP_ARCH=`"$dummy"` test -z "$HP_ARCH" && HP_ARCH=hppa fi ;; esac if test "$HP_ARCH" = hppa2.0w then set_cc_for_build # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler # generating 64-bit code. GNU and HP use different nomenclature: # # $ CC_FOR_BUILD=cc ./config.guess # => hppa2.0w-hp-hpux11.23 # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess # => hppa64-hp-hpux11.23 if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | grep -q __LP64__ then HP_ARCH=hppa2.0w else HP_ARCH=hppa64 fi fi GUESS=$HP_ARCH-hp-hpux$HPUX_REV ;; ia64:HP-UX:*:*) HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'` GUESS=ia64-hp-hpux$HPUX_REV ;; 3050*:HI-UX:*:*) set_cc_for_build sed 's/^ //' << EOF > "$dummy.c" #include int main () { long cpu = sysconf (_SC_CPU_VERSION); /* The order matters, because CPU_IS_HP_MC68K erroneously returns true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct results, however. */ if (CPU_IS_PA_RISC (cpu)) { switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; default: puts ("hppa-hitachi-hiuxwe2"); break; } } else if (CPU_IS_HP_MC68K (cpu)) puts ("m68k-hitachi-hiuxwe2"); else puts ("unknown-hitachi-hiuxwe2"); exit (0); } EOF $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` && { echo "$SYSTEM_NAME"; exit; } GUESS=unknown-hitachi-hiuxwe2 ;; 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*) GUESS=hppa1.1-hp-bsd ;; 9000/8??:4.3bsd:*:*) GUESS=hppa1.0-hp-bsd ;; *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) GUESS=hppa1.0-hp-mpeix ;; hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*) GUESS=hppa1.1-hp-osf ;; hp8??:OSF1:*:*) GUESS=hppa1.0-hp-osf ;; i*86:OSF1:*:*) if test -x /usr/sbin/sysversion ; then GUESS=$UNAME_MACHINE-unknown-osf1mk else GUESS=$UNAME_MACHINE-unknown-osf1 fi ;; parisc*:Lites*:*:*) GUESS=hppa1.1-hp-lites ;; C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) GUESS=c1-convex-bsd ;; C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) if getsysinfo -f scalar_acc then echo c32-convex-bsd else echo c2-convex-bsd fi exit ;; C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) GUESS=c34-convex-bsd ;; C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) GUESS=c38-convex-bsd ;; C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) GUESS=c4-convex-bsd ;; CRAY*Y-MP:*:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=ymp-cray-unicos$CRAY_REL ;; CRAY*[A-Z]90:*:*:*) echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \ | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ -e 's/\.[^.]*$/.X/' exit ;; CRAY*TS:*:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=t90-cray-unicos$CRAY_REL ;; CRAY*T3E:*:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=alphaev5-cray-unicosmk$CRAY_REL ;; CRAY*SV1:*:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=sv1-cray-unicos$CRAY_REL ;; *:UNICOS/mp:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=craynv-cray-unicosmp$CRAY_REL ;; F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz` FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` FUJITSU_REL=`echo "$UNAME_RELEASE" | sed -e 's/ /_/'` GUESS=${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL} ;; 5000:UNIX_System_V:4.*:*) FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` FUJITSU_REL=`echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'` GUESS=sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL} ;; i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) GUESS=$UNAME_MACHINE-pc-bsdi$UNAME_RELEASE ;; sparc*:BSD/OS:*:*) GUESS=sparc-unknown-bsdi$UNAME_RELEASE ;; *:BSD/OS:*:*) GUESS=$UNAME_MACHINE-unknown-bsdi$UNAME_RELEASE ;; arm:FreeBSD:*:*) UNAME_PROCESSOR=`uname -p` set_cc_for_build if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_PCS_VFP then FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabi else FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabihf fi ;; *:FreeBSD:*:*) UNAME_PROCESSOR=`/usr/bin/uname -p` case $UNAME_PROCESSOR in amd64) UNAME_PROCESSOR=x86_64 ;; i386) UNAME_PROCESSOR=i586 ;; esac FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL ;; i*:CYGWIN*:*) GUESS=$UNAME_MACHINE-pc-cygwin ;; *:MINGW64*:*) GUESS=$UNAME_MACHINE-pc-mingw64 ;; *:MINGW*:*) GUESS=$UNAME_MACHINE-pc-mingw32 ;; *:MSYS*:*) GUESS=$UNAME_MACHINE-pc-msys ;; i*:PW*:*) GUESS=$UNAME_MACHINE-pc-pw32 ;; *:SerenityOS:*:*) GUESS=$UNAME_MACHINE-pc-serenity ;; *:Interix*:*) case $UNAME_MACHINE in x86) GUESS=i586-pc-interix$UNAME_RELEASE ;; authenticamd | genuineintel | EM64T) GUESS=x86_64-unknown-interix$UNAME_RELEASE ;; IA64) GUESS=ia64-unknown-interix$UNAME_RELEASE ;; esac ;; i*:UWIN*:*) GUESS=$UNAME_MACHINE-pc-uwin ;; amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) GUESS=x86_64-pc-cygwin ;; prep*:SunOS:5.*:*) SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'` GUESS=powerpcle-unknown-solaris2$SUN_REL ;; *:GNU:*:*) # the GNU system GNU_ARCH=`echo "$UNAME_MACHINE" | sed -e 's,[-/].*$,,'` GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's,/.*$,,'` GUESS=$GNU_ARCH-unknown-$LIBC$GNU_REL ;; *:GNU/*:*:*) # other systems with GNU libc and userland GNU_SYS=`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"` GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_MACHINE-unknown-$GNU_SYS$GNU_REL-$LIBC ;; x86_64:[Mm]anagarm:*:*|i?86:[Mm]anagarm:*:*) GUESS="$UNAME_MACHINE-pc-managarm-mlibc" ;; *:[Mm]anagarm:*:*) GUESS="$UNAME_MACHINE-unknown-managarm-mlibc" ;; *:Minix:*:*) GUESS=$UNAME_MACHINE-unknown-minix ;; aarch64:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; aarch64_be:Linux:*:*) UNAME_MACHINE=aarch64_be GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; alpha:Linux:*:*) case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 2>/dev/null` in EV5) UNAME_MACHINE=alphaev5 ;; EV56) UNAME_MACHINE=alphaev56 ;; PCA56) UNAME_MACHINE=alphapca56 ;; PCA57) UNAME_MACHINE=alphapca56 ;; EV6) UNAME_MACHINE=alphaev6 ;; EV67) UNAME_MACHINE=alphaev67 ;; EV68*) UNAME_MACHINE=alphaev68 ;; esac objdump --private-headers /bin/sh | grep -q ld.so.1 if test "$?" = 0 ; then LIBC=gnulibc1 ; fi GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; arc:Linux:*:* | arceb:Linux:*:* | arc32:Linux:*:* | arc64:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; arm*:Linux:*:*) set_cc_for_build if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_EABI__ then GUESS=$UNAME_MACHINE-unknown-linux-$LIBC else if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_PCS_VFP then GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabi else GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabihf fi fi ;; avr32*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; cris:Linux:*:*) GUESS=$UNAME_MACHINE-axis-linux-$LIBC ;; crisv32:Linux:*:*) GUESS=$UNAME_MACHINE-axis-linux-$LIBC ;; e2k:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; frv:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; hexagon:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; i*86:Linux:*:*) GUESS=$UNAME_MACHINE-pc-linux-$LIBC ;; ia64:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; k1om:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; loongarch32:Linux:*:* | loongarch64:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; m32r*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; m68*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; mips:Linux:*:* | mips64:Linux:*:*) set_cc_for_build IS_GLIBC=0 test x"${LIBC}" = xgnu && IS_GLIBC=1 sed 's/^ //' << EOF > "$dummy.c" #undef CPU #undef mips #undef mipsel #undef mips64 #undef mips64el #if ${IS_GLIBC} && defined(_ABI64) LIBCABI=gnuabi64 #else #if ${IS_GLIBC} && defined(_ABIN32) LIBCABI=gnuabin32 #else LIBCABI=${LIBC} #endif #endif #if ${IS_GLIBC} && defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6 CPU=mipsisa64r6 #else #if ${IS_GLIBC} && !defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6 CPU=mipsisa32r6 #else #if defined(__mips64) CPU=mips64 #else CPU=mips #endif #endif #endif #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) MIPS_ENDIAN=el #else #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) MIPS_ENDIAN= #else MIPS_ENDIAN= #endif #endif EOF cc_set_vars=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU\|^MIPS_ENDIAN\|^LIBCABI'` eval "$cc_set_vars" test "x$CPU" != x && { echo "$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; } ;; mips64el:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; openrisc*:Linux:*:*) GUESS=or1k-unknown-linux-$LIBC ;; or32:Linux:*:* | or1k*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; padre:Linux:*:*) GUESS=sparc-unknown-linux-$LIBC ;; parisc64:Linux:*:* | hppa64:Linux:*:*) GUESS=hppa64-unknown-linux-$LIBC ;; parisc:Linux:*:* | hppa:Linux:*:*) # Look for CPU level case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in PA7*) GUESS=hppa1.1-unknown-linux-$LIBC ;; PA8*) GUESS=hppa2.0-unknown-linux-$LIBC ;; *) GUESS=hppa-unknown-linux-$LIBC ;; esac ;; ppc64:Linux:*:*) GUESS=powerpc64-unknown-linux-$LIBC ;; ppc:Linux:*:*) GUESS=powerpc-unknown-linux-$LIBC ;; ppc64le:Linux:*:*) GUESS=powerpc64le-unknown-linux-$LIBC ;; ppcle:Linux:*:*) GUESS=powerpcle-unknown-linux-$LIBC ;; riscv32:Linux:*:* | riscv32be:Linux:*:* | riscv64:Linux:*:* | riscv64be:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; s390:Linux:*:* | s390x:Linux:*:*) GUESS=$UNAME_MACHINE-ibm-linux-$LIBC ;; sh64*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; sh*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; sparc:Linux:*:* | sparc64:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; tile*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; vax:Linux:*:*) GUESS=$UNAME_MACHINE-dec-linux-$LIBC ;; x86_64:Linux:*:*) set_cc_for_build CPU=$UNAME_MACHINE LIBCABI=$LIBC if test "$CC_FOR_BUILD" != no_compiler_found; then ABI=64 sed 's/^ //' << EOF > "$dummy.c" #ifdef __i386__ ABI=x86 #else #ifdef __ILP32__ ABI=x32 #endif #endif EOF cc_set_abi=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^ABI' | sed 's, ,,g'` eval "$cc_set_abi" case $ABI in x86) CPU=i686 ;; x32) LIBCABI=${LIBC}x32 ;; esac fi GUESS=$CPU-pc-linux-$LIBCABI ;; xtensa*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; i*86:DYNIX/ptx:4*:*) # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. # earlier versions are messed up and put the nodename in both # sysname and nodename. GUESS=i386-sequent-sysv4 ;; i*86:UNIX_SV:4.2MP:2.*) # Unixware is an offshoot of SVR4, but it has its own version # number series starting with 2... # I am not positive that other SVR4 systems won't match this, # I just have to hope. -- rms. # Use sysv4.2uw... so that sysv4* matches it. GUESS=$UNAME_MACHINE-pc-sysv4.2uw$UNAME_VERSION ;; i*86:OS/2:*:*) # If we were able to find 'uname', then EMX Unix compatibility # is probably installed. GUESS=$UNAME_MACHINE-pc-os2-emx ;; i*86:XTS-300:*:STOP) GUESS=$UNAME_MACHINE-unknown-stop ;; i*86:atheos:*:*) GUESS=$UNAME_MACHINE-unknown-atheos ;; i*86:syllable:*:*) GUESS=$UNAME_MACHINE-pc-syllable ;; i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) GUESS=i386-unknown-lynxos$UNAME_RELEASE ;; i*86:*DOS:*:*) GUESS=$UNAME_MACHINE-pc-msdosdjgpp ;; i*86:*:4.*:*) UNAME_REL=`echo "$UNAME_RELEASE" | sed 's/\/MP$//'` if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then GUESS=$UNAME_MACHINE-univel-sysv$UNAME_REL else GUESS=$UNAME_MACHINE-pc-sysv$UNAME_REL fi ;; i*86:*:5:[678]*) # UnixWare 7.x, OpenUNIX and OpenServer 6. case `/bin/uname -X | grep "^Machine"` in *486*) UNAME_MACHINE=i486 ;; *Pentium) UNAME_MACHINE=i586 ;; *Pent*|*Celeron) UNAME_MACHINE=i686 ;; esac GUESS=$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} ;; i*86:*:3.2:*) if test -f /usr/options/cb.name; then UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ && UNAME_MACHINE=i586 (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ && UNAME_MACHINE=i686 (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ && UNAME_MACHINE=i686 GUESS=$UNAME_MACHINE-pc-sco$UNAME_REL else GUESS=$UNAME_MACHINE-pc-sysv32 fi ;; pc:*:*:*) # Left here for compatibility: # uname -m prints for DJGPP always 'pc', but it prints nothing about # the processor, so we play safe by assuming i586. # Note: whatever this is, it MUST be the same as what config.sub # prints for the "djgpp" host, or else GDB configure will decide that # this is a cross-build. GUESS=i586-pc-msdosdjgpp ;; Intel:Mach:3*:*) GUESS=i386-pc-mach3 ;; paragon:*:*:*) GUESS=i860-intel-osf1 ;; i860:*:4.*:*) # i860-SVR4 if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then GUESS=i860-stardent-sysv$UNAME_RELEASE # Stardent Vistra i860-SVR4 else # Add other i860-SVR4 vendors below as they are discovered. GUESS=i860-unknown-sysv$UNAME_RELEASE # Unknown i860-SVR4 fi ;; mini*:CTIX:SYS*5:*) # "miniframe" GUESS=m68010-convergent-sysv ;; mc68k:UNIX:SYSTEM5:3.51m) GUESS=m68k-convergent-sysv ;; M680?0:D-NIX:5.3:*) GUESS=m68k-diab-dnix ;; M68*:*:R3V[5678]*:*) test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) OS_REL='' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3"$OS_REL"; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;; 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4; exit; } ;; NCR*:*:4.2:* | MPRAS*:*:4.2:*) OS_REL='.3' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3"$OS_REL"; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;; m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) GUESS=m68k-unknown-lynxos$UNAME_RELEASE ;; mc68030:UNIX_System_V:4.*:*) GUESS=m68k-atari-sysv4 ;; TSUNAMI:LynxOS:2.*:*) GUESS=sparc-unknown-lynxos$UNAME_RELEASE ;; rs6000:LynxOS:2.*:*) GUESS=rs6000-unknown-lynxos$UNAME_RELEASE ;; PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) GUESS=powerpc-unknown-lynxos$UNAME_RELEASE ;; SM[BE]S:UNIX_SV:*:*) GUESS=mips-dde-sysv$UNAME_RELEASE ;; RM*:ReliantUNIX-*:*:*) GUESS=mips-sni-sysv4 ;; RM*:SINIX-*:*:*) GUESS=mips-sni-sysv4 ;; *:SINIX-*:*:*) if uname -p 2>/dev/null >/dev/null ; then UNAME_MACHINE=`(uname -p) 2>/dev/null` GUESS=$UNAME_MACHINE-sni-sysv4 else GUESS=ns32k-sni-sysv fi ;; PENTIUM:*:4.0*:*) # Unisys 'ClearPath HMP IX 4000' SVR4/MP effort # says GUESS=i586-unisys-sysv4 ;; *:UNIX_System_V:4*:FTX*) # From Gerald Hewes . # How about differentiating between stratus architectures? -djm GUESS=hppa1.1-stratus-sysv4 ;; *:*:*:FTX*) # From seanf@swdc.stratus.com. GUESS=i860-stratus-sysv4 ;; i*86:VOS:*:*) # From Paul.Green@stratus.com. GUESS=$UNAME_MACHINE-stratus-vos ;; *:VOS:*:*) # From Paul.Green@stratus.com. GUESS=hppa1.1-stratus-vos ;; mc68*:A/UX:*:*) GUESS=m68k-apple-aux$UNAME_RELEASE ;; news*:NEWS-OS:6*:*) GUESS=mips-sony-newsos6 ;; R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) if test -d /usr/nec; then GUESS=mips-nec-sysv$UNAME_RELEASE else GUESS=mips-unknown-sysv$UNAME_RELEASE fi ;; BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. GUESS=powerpc-be-beos ;; BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. GUESS=powerpc-apple-beos ;; BePC:BeOS:*:*) # BeOS running on Intel PC compatible. GUESS=i586-pc-beos ;; BePC:Haiku:*:*) # Haiku running on Intel PC compatible. GUESS=i586-pc-haiku ;; ppc:Haiku:*:*) # Haiku running on Apple PowerPC GUESS=powerpc-apple-haiku ;; *:Haiku:*:*) # Haiku modern gcc (not bound by BeOS compat) GUESS=$UNAME_MACHINE-unknown-haiku ;; SX-4:SUPER-UX:*:*) GUESS=sx4-nec-superux$UNAME_RELEASE ;; SX-5:SUPER-UX:*:*) GUESS=sx5-nec-superux$UNAME_RELEASE ;; SX-6:SUPER-UX:*:*) GUESS=sx6-nec-superux$UNAME_RELEASE ;; SX-7:SUPER-UX:*:*) GUESS=sx7-nec-superux$UNAME_RELEASE ;; SX-8:SUPER-UX:*:*) GUESS=sx8-nec-superux$UNAME_RELEASE ;; SX-8R:SUPER-UX:*:*) GUESS=sx8r-nec-superux$UNAME_RELEASE ;; SX-ACE:SUPER-UX:*:*) GUESS=sxace-nec-superux$UNAME_RELEASE ;; Power*:Rhapsody:*:*) GUESS=powerpc-apple-rhapsody$UNAME_RELEASE ;; *:Rhapsody:*:*) GUESS=$UNAME_MACHINE-apple-rhapsody$UNAME_RELEASE ;; arm64:Darwin:*:*) GUESS=aarch64-apple-darwin$UNAME_RELEASE ;; *:Darwin:*:*) UNAME_PROCESSOR=`uname -p` case $UNAME_PROCESSOR in unknown) UNAME_PROCESSOR=powerpc ;; esac if command -v xcode-select > /dev/null 2> /dev/null && \ ! xcode-select --print-path > /dev/null 2> /dev/null ; then # Avoid executing cc if there is no toolchain installed as # cc will be a stub that puts up a graphical alert # prompting the user to install developer tools. CC_FOR_BUILD=no_compiler_found else set_cc_for_build fi if test "$CC_FOR_BUILD" != no_compiler_found; then if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ grep IS_64BIT_ARCH >/dev/null then case $UNAME_PROCESSOR in i386) UNAME_PROCESSOR=x86_64 ;; powerpc) UNAME_PROCESSOR=powerpc64 ;; esac fi # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \ (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ grep IS_PPC >/dev/null then UNAME_PROCESSOR=powerpc fi elif test "$UNAME_PROCESSOR" = i386 ; then # uname -m returns i386 or x86_64 UNAME_PROCESSOR=$UNAME_MACHINE fi GUESS=$UNAME_PROCESSOR-apple-darwin$UNAME_RELEASE ;; *:procnto*:*:* | *:QNX:[0123456789]*:*) UNAME_PROCESSOR=`uname -p` if test "$UNAME_PROCESSOR" = x86; then UNAME_PROCESSOR=i386 UNAME_MACHINE=pc fi GUESS=$UNAME_PROCESSOR-$UNAME_MACHINE-nto-qnx$UNAME_RELEASE ;; *:QNX:*:4*) GUESS=i386-pc-qnx ;; NEO-*:NONSTOP_KERNEL:*:*) GUESS=neo-tandem-nsk$UNAME_RELEASE ;; NSE-*:NONSTOP_KERNEL:*:*) GUESS=nse-tandem-nsk$UNAME_RELEASE ;; NSR-*:NONSTOP_KERNEL:*:*) GUESS=nsr-tandem-nsk$UNAME_RELEASE ;; NSV-*:NONSTOP_KERNEL:*:*) GUESS=nsv-tandem-nsk$UNAME_RELEASE ;; NSX-*:NONSTOP_KERNEL:*:*) GUESS=nsx-tandem-nsk$UNAME_RELEASE ;; *:NonStop-UX:*:*) GUESS=mips-compaq-nonstopux ;; BS2000:POSIX*:*:*) GUESS=bs2000-siemens-sysv ;; DS/*:UNIX_System_V:*:*) GUESS=$UNAME_MACHINE-$UNAME_SYSTEM-$UNAME_RELEASE ;; *:Plan9:*:*) # "uname -m" is not consistent, so use $cputype instead. 386 # is converted to i386 for consistency with other x86 # operating systems. if test "${cputype-}" = 386; then UNAME_MACHINE=i386 elif test "x${cputype-}" != x; then UNAME_MACHINE=$cputype fi GUESS=$UNAME_MACHINE-unknown-plan9 ;; *:TOPS-10:*:*) GUESS=pdp10-unknown-tops10 ;; *:TENEX:*:*) GUESS=pdp10-unknown-tenex ;; KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) GUESS=pdp10-dec-tops20 ;; XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) GUESS=pdp10-xkl-tops20 ;; *:TOPS-20:*:*) GUESS=pdp10-unknown-tops20 ;; *:ITS:*:*) GUESS=pdp10-unknown-its ;; SEI:*:*:SEIUX) GUESS=mips-sei-seiux$UNAME_RELEASE ;; *:DragonFly:*:*) DRAGONFLY_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_MACHINE-unknown-dragonfly$DRAGONFLY_REL ;; *:*VMS:*:*) UNAME_MACHINE=`(uname -p) 2>/dev/null` case $UNAME_MACHINE in A*) GUESS=alpha-dec-vms ;; I*) GUESS=ia64-dec-vms ;; V*) GUESS=vax-dec-vms ;; esac ;; *:XENIX:*:SysV) GUESS=i386-pc-xenix ;; i*86:skyos:*:*) SKYOS_REL=`echo "$UNAME_RELEASE" | sed -e 's/ .*$//'` GUESS=$UNAME_MACHINE-pc-skyos$SKYOS_REL ;; i*86:rdos:*:*) GUESS=$UNAME_MACHINE-pc-rdos ;; i*86:Fiwix:*:*) GUESS=$UNAME_MACHINE-pc-fiwix ;; *:AROS:*:*) GUESS=$UNAME_MACHINE-unknown-aros ;; x86_64:VMkernel:*:*) GUESS=$UNAME_MACHINE-unknown-esx ;; amd64:Isilon\ OneFS:*:*) GUESS=x86_64-unknown-onefs ;; *:Unleashed:*:*) GUESS=$UNAME_MACHINE-unknown-unleashed$UNAME_RELEASE ;; esac # Do we have a guess based on uname results? if test "x$GUESS" != x; then echo "$GUESS" exit fi # No uname command or uname output not recognized. set_cc_for_build cat > "$dummy.c" < #include #endif #if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__) #if defined (vax) || defined (__vax) || defined (__vax__) || defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__) #include #if defined(_SIZE_T_) || defined(SIGLOST) #include #endif #endif #endif main () { #if defined (sony) #if defined (MIPSEB) /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed, I don't know.... */ printf ("mips-sony-bsd\n"); exit (0); #else #include printf ("m68k-sony-newsos%s\n", #ifdef NEWSOS4 "4" #else "" #endif ); exit (0); #endif #endif #if defined (NeXT) #if !defined (__ARCHITECTURE__) #define __ARCHITECTURE__ "m68k" #endif int version; version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`; if (version < 4) printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version); else printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version); exit (0); #endif #if defined (MULTIMAX) || defined (n16) #if defined (UMAXV) printf ("ns32k-encore-sysv\n"); exit (0); #else #if defined (CMU) printf ("ns32k-encore-mach\n"); exit (0); #else printf ("ns32k-encore-bsd\n"); exit (0); #endif #endif #endif #if defined (__386BSD__) printf ("i386-pc-bsd\n"); exit (0); #endif #if defined (sequent) #if defined (i386) printf ("i386-sequent-dynix\n"); exit (0); #endif #if defined (ns32000) printf ("ns32k-sequent-dynix\n"); exit (0); #endif #endif #if defined (_SEQUENT_) struct utsname un; uname(&un); if (strncmp(un.version, "V2", 2) == 0) { printf ("i386-sequent-ptx2\n"); exit (0); } if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */ printf ("i386-sequent-ptx1\n"); exit (0); } printf ("i386-sequent-ptx\n"); exit (0); #endif #if defined (vax) #if !defined (ultrix) #include #if defined (BSD) #if BSD == 43 printf ("vax-dec-bsd4.3\n"); exit (0); #else #if BSD == 199006 printf ("vax-dec-bsd4.3reno\n"); exit (0); #else printf ("vax-dec-bsd\n"); exit (0); #endif #endif #else printf ("vax-dec-bsd\n"); exit (0); #endif #else #if defined(_SIZE_T_) || defined(SIGLOST) struct utsname un; uname (&un); printf ("vax-dec-ultrix%s\n", un.release); exit (0); #else printf ("vax-dec-ultrix\n"); exit (0); #endif #endif #endif #if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__) #if defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__) #if defined(_SIZE_T_) || defined(SIGLOST) struct utsname *un; uname (&un); printf ("mips-dec-ultrix%s\n", un.release); exit (0); #else printf ("mips-dec-ultrix\n"); exit (0); #endif #endif #endif #if defined (alliant) && defined (i860) printf ("i860-alliant-bsd\n"); exit (0); #endif exit (1); } EOF $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=`"$dummy"` && { echo "$SYSTEM_NAME"; exit; } # Apollos put the system type in the environment. test -d /usr/apollo && { echo "$ISP-apollo-$SYSTYPE"; exit; } echo "$0: unable to guess system type" >&2 case $UNAME_MACHINE:$UNAME_SYSTEM in mips:Linux | mips64:Linux) # If we got here on MIPS GNU/Linux, output extra information. cat >&2 <&2 <&2 </dev/null || echo unknown` uname -r = `(uname -r) 2>/dev/null || echo unknown` uname -s = `(uname -s) 2>/dev/null || echo unknown` uname -v = `(uname -v) 2>/dev/null || echo unknown` /usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` /bin/uname -X = `(/bin/uname -X) 2>/dev/null` hostinfo = `(hostinfo) 2>/dev/null` /bin/universe = `(/bin/universe) 2>/dev/null` /usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` /bin/arch = `(/bin/arch) 2>/dev/null` /usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` /usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` UNAME_MACHINE = "$UNAME_MACHINE" UNAME_RELEASE = "$UNAME_RELEASE" UNAME_SYSTEM = "$UNAME_SYSTEM" UNAME_VERSION = "$UNAME_VERSION" EOF fi exit 1 # Local variables: # eval: (add-hook 'before-save-hook 'time-stamp) # time-stamp-start: "timestamp='" # time-stamp-format: "%:y-%02m-%02d" # time-stamp-end: "'" # End: libnbd-1.20.3/config.sub0000755000175000017500000010572414603303676010514 #!/usr/bin/sh # Configuration validation subroutine script. # Copyright 1992-2023 Free Software Foundation, Inc. # shellcheck disable=SC2006,SC2268 # see below for rationale timestamp='2023-06-23' # This file is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, see . # # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that # program. This Exception is an additional permission under section 7 # of the GNU General Public License, version 3 ("GPLv3"). # Please send patches to . # # Configuration subroutine to validate and canonicalize a configuration type. # Supply the specified configuration type as an argument. # If it is invalid, we print an error message on stderr and exit with code 1. # Otherwise, we print the canonical config type on stdout and succeed. # You can get the latest version of this script from: # https://git.savannah.gnu.org/cgit/config.git/plain/config.sub # This file is supposed to be the same for all GNU packages # and recognize all the CPU types, system types and aliases # that are meaningful with *any* GNU software. # Each package is responsible for reporting which valid configurations # it does not support. The user should be able to distinguish # a failure to support a valid configuration from a meaningless # configuration. # The goal of this file is to map all the various variations of a given # machine specification into a single specification in the form: # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM # or in some cases, the newer four-part form: # CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM # It is wrong to echo any other type of specification. # The "shellcheck disable" line above the timestamp inhibits complaints # about features and limitations of the classic Bourne shell that were # superseded or lifted in POSIX. However, this script identifies a wide # variety of pre-POSIX systems that do not have POSIX shells at all, and # even some reasonably current systems (Solaris 10 as case-in-point) still # have a pre-POSIX /bin/sh. me=`echo "$0" | sed -e 's,.*/,,'` usage="\ Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS Canonicalize a configuration name. Options: -h, --help print this help, then exit -t, --time-stamp print date of last modification, then exit -v, --version print version number, then exit Report bugs and patches to ." version="\ GNU config.sub ($timestamp) Copyright 1992-2023 Free Software Foundation, Inc. This is free software; see the source for copying conditions. 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See the # GNU General Public License for more details. # You should have received a copy of the GNU General Public License # along with this program. If not, see . # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Originally written by Alexandre Oliva . case $1 in '') echo "$0: No command. Try '$0 --help' for more information." 1>&2 exit 1; ;; -h | --h*) cat <<\EOF Usage: depcomp [--help] [--version] PROGRAM [ARGS] Run PROGRAMS ARGS to compile a file, generating dependencies as side-effects. Environment variables: depmode Dependency tracking mode. source Source file read by 'PROGRAMS ARGS'. object Object file output by 'PROGRAMS ARGS'. DEPDIR directory where to store dependencies. depfile Dependency file to output. tmpdepfile Temporary file to use when outputting dependencies. libtool Whether libtool is used (yes/no). Report bugs to . EOF exit $? ;; -v | --v*) echo "depcomp $scriptversion" exit $? ;; esac # Get the directory component of the given path, and save it in the # global variables '$dir'. Note that this directory component will # be either empty or ending with a '/' character. This is deliberate. set_dir_from () { case $1 in */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;; *) dir=;; esac } # Get the suffix-stripped basename of the given path, and save it the # global variable '$base'. set_base_from () { base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'` } # If no dependency file was actually created by the compiler invocation, # we still have to create a dummy depfile, to avoid errors with the # Makefile "include basename.Plo" scheme. make_dummy_depfile () { echo "#dummy" > "$depfile" } # Factor out some common post-processing of the generated depfile. # Requires the auxiliary global variable '$tmpdepfile' to be set. aix_post_process_depfile () { # If the compiler actually managed to produce a dependency file, # post-process it. if test -f "$tmpdepfile"; then # Each line is of the form 'foo.o: dependency.h'. # Do two passes, one to just change these to # $object: dependency.h # and one to simply output # dependency.h: # which is needed to avoid the deleted-header problem. { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile" sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile" } > "$depfile" rm -f "$tmpdepfile" else make_dummy_depfile fi } # A tabulation character. tab=' ' # A newline character. nl=' ' # Character ranges might be problematic outside the C locale. # These definitions help. upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ lower=abcdefghijklmnopqrstuvwxyz digits=0123456789 alpha=${upper}${lower} if test -z "$depmode" || test -z "$source" || test -z "$object"; then echo "depcomp: Variables source, object and depmode must be set" 1>&2 exit 1 fi # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po. depfile=${depfile-`echo "$object" | sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`} tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`} rm -f "$tmpdepfile" # Avoid interferences from the environment. gccflag= dashmflag= # Some modes work just like other modes, but use different flags. We # parameterize here, but still list the modes in the big case below, # to make depend.m4 easier to write. Note that we *cannot* use a case # here, because this file can only contain one case statement. if test "$depmode" = hp; then # HP compiler uses -M and no extra arg. gccflag=-M depmode=gcc fi if test "$depmode" = dashXmstdout; then # This is just like dashmstdout with a different argument. dashmflag=-xM depmode=dashmstdout fi cygpath_u="cygpath -u -f -" if test "$depmode" = msvcmsys; then # This is just like msvisualcpp but w/o cygpath translation. # Just convert the backslash-escaped backslashes to single forward # slashes to satisfy depend.m4 cygpath_u='sed s,\\\\,/,g' depmode=msvisualcpp fi if test "$depmode" = msvc7msys; then # This is just like msvc7 but w/o cygpath translation. # Just convert the backslash-escaped backslashes to single forward # slashes to satisfy depend.m4 cygpath_u='sed s,\\\\,/,g' depmode=msvc7 fi if test "$depmode" = xlc; then # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information. gccflag=-qmakedep=gcc,-MF depmode=gcc fi case "$depmode" in gcc3) ## gcc 3 implements dependency tracking that does exactly what ## we want. Yay! Note: for some reason libtool 1.4 doesn't like ## it if -MD -MP comes after the -MF stuff. Hmm. ## Unfortunately, FreeBSD c89 acceptance of flags depends upon ## the command line argument order; so add the flags where they ## appear in depend2.am. Note that the slowdown incurred here ## affects only configure: in makefiles, %FASTDEP% shortcuts this. for arg do case $arg in -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;; *) set fnord "$@" "$arg" ;; esac shift # fnord shift # $arg done "$@" stat=$? if test $stat -ne 0; then rm -f "$tmpdepfile" exit $stat fi mv "$tmpdepfile" "$depfile" ;; gcc) ## Note that this doesn't just cater to obsosete pre-3.x GCC compilers. ## but also to in-use compilers like IMB xlc/xlC and the HP C compiler. ## (see the conditional assignment to $gccflag above). ## There are various ways to get dependency output from gcc. Here's ## why we pick this rather obscure method: ## - Don't want to use -MD because we'd like the dependencies to end ## up in a subdir. Having to rename by hand is ugly. ## (We might end up doing this anyway to support other compilers.) ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like ## -MM, not -M (despite what the docs say). Also, it might not be ## supported by the other compilers which use the 'gcc' depmode. ## - Using -M directly means running the compiler twice (even worse ## than renaming). if test -z "$gccflag"; then gccflag=-MD, fi "$@" -Wp,"$gccflag$tmpdepfile" stat=$? if test $stat -ne 0; then rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" echo "$object : \\" > "$depfile" # The second -e expression handles DOS-style file names with drive # letters. sed -e 's/^[^:]*: / /' \ -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile" ## This next piece of magic avoids the "deleted header file" problem. ## The problem is that when a header file which appears in a .P file ## is deleted, the dependency causes make to die (because there is ## typically no way to rebuild the header). We avoid this by adding ## dummy dependencies for each header file. Too bad gcc doesn't do ## this for us directly. ## Some versions of gcc put a space before the ':'. 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IN NO EVENT SHALL THE # X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- # TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # # Except as contained in this notice, the name of the X Consortium shall not # be used in advertising or otherwise to promote the sale, use or other deal- # ings in this Software without prior written authorization from the X Consor- # tium. # # # FSF changes to this file are in the public domain. # # Calling this script install-sh is preferred over install.sh, to prevent # 'make' implicit rules from creating a file called install from it # when there is no Makefile. # # This script is compatible with the BSD install script, but was written # from scratch. tab=' ' nl=' ' IFS=" $tab$nl" # Set DOITPROG to "echo" to test this script. doit=${DOITPROG-} doit_exec=${doit:-exec} # Put in absolute file names if you don't have them in your path; # or use environment vars. chgrpprog=${CHGRPPROG-chgrp} chmodprog=${CHMODPROG-chmod} chownprog=${CHOWNPROG-chown} cmpprog=${CMPPROG-cmp} cpprog=${CPPROG-cp} mkdirprog=${MKDIRPROG-mkdir} mvprog=${MVPROG-mv} rmprog=${RMPROG-rm} stripprog=${STRIPPROG-strip} posix_mkdir= # Desired mode of installed file. mode=0755 # Create dirs (including intermediate dirs) using mode 755. # This is like GNU 'install' as of coreutils 8.32 (2020). mkdir_umask=22 backupsuffix= chgrpcmd= chmodcmd=$chmodprog chowncmd= mvcmd=$mvprog rmcmd="$rmprog -f" stripcmd= src= dst= dir_arg= dst_arg= copy_on_change=false is_target_a_directory=possibly usage="\ Usage: $0 [OPTION]... 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(umask $mkdir_umask && eval "\$doit_exec \$mkdirprog $prefixes") || test -d "$dstdir" || exit 1 obsolete_mkdir_used=true fi fi fi if test -n "$dir_arg"; then { test -z "$chowncmd" || $doit $chowncmd "$dst"; } && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } && { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false || test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1 else # Make a couple of temp file names in the proper directory. dsttmp=${dstdirslash}_inst.$$_ rmtmp=${dstdirslash}_rm.$$_ # Trap to clean up those temp files at exit. trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0 # Copy the file name to the temp name. (umask $cp_umask && { test -z "$stripcmd" || { # Create $dsttmp read-write so that cp doesn't create it read-only, # which would cause strip to fail. if test -z "$doit"; then : >"$dsttmp" # No need to fork-exec 'touch'. else $doit touch "$dsttmp" fi } } && $doit_exec $cpprog "$src" "$dsttmp") && # and set any options; do chmod last to preserve setuid bits. # # If any of these fail, we abort the whole thing. If we want to # ignore errors from any of these, just make sure not to ignore # errors from the above "$doit $cpprog $src $dsttmp" command. # { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } && { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } && # If -C, don't bother to copy if it wouldn't change the file. if $copy_on_change && old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` && new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` && set -f && set X $old && old=:$2:$4:$5:$6 && set X $new && new=:$2:$4:$5:$6 && set +f && test "$old" = "$new" && $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1 then rm -f "$dsttmp" else # If $backupsuffix is set, and the file being installed # already exists, attempt a backup. Don't worry if it fails, # e.g., if mv doesn't support -f. if test -n "$backupsuffix" && test -f "$dst"; then $doit $mvcmd -f "$dst" "$dst$backupsuffix" 2>/dev/null fi # Rename the file to the real destination. $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null || # The rename failed, perhaps because mv can't rename something else # to itself, or perhaps because mv is so ancient that it does not # support -f. { # Now remove or move aside any old file at destination location. # We try this two ways since rm can't unlink itself on some # systems and the destination file might be busy for other # reasons. In this case, the final cleanup might fail but the new # file should still install successfully. { test ! -f "$dst" || $doit $rmcmd "$dst" 2>/dev/null || { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null && { $doit $rmcmd "$rmtmp" 2>/dev/null; :; } } || { echo "$0: cannot unlink or rename $dst" >&2 (exit 1); exit 1 } } && # Now rename the file to the real destination. $doit $mvcmd "$dsttmp" "$dst" } fi || exit 1 trap '' 0 fi done # Local variables: # eval: (add-hook 'before-save-hook 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-time-zone: "UTC0" # time-stamp-end: "; # UTC" # End: libnbd-1.20.3/ltmain.sh0000644000175000017500000121201014603303675010334 #! /usr/bin/env sh ## DO NOT EDIT - This file generated from ./build-aux/ltmain.in ## by inline-source v2019-02-19.15 # libtool (GNU libtool) 2.4.7 # Provide generalized library-building support services. # Written by Gordon Matzigkeit , 1996 # Copyright (C) 1996-2019, 2021-2022 Free Software Foundation, Inc. # This is free software; see the source for copying conditions. There is NO # warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # GNU Libtool is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # As a special exception to the GNU General Public License, # if you distribute this file as part of a program or library that # is built using GNU Libtool, you may include this file under the # same distribution terms that you use for the rest of that program. # # GNU Libtool is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . PROGRAM=libtool PACKAGE=libtool VERSION=2.4.7 package_revision=2.4.7 ## ------ ## ## Usage. ## ## ------ ## # Run './libtool --help' for help with using this script from the # command line. ## ------------------------------- ## ## User overridable command paths. ## ## ------------------------------- ## # After configure completes, it has a better idea of some of the # shell tools we need than the defaults used by the functions shared # with bootstrap, so set those here where they can still be over- # ridden by the user, but otherwise take precedence. : ${AUTOCONF="autoconf"} : ${AUTOMAKE="automake"} ## -------------------------- ## ## Source external libraries. ## ## -------------------------- ## # Much of our low-level functionality needs to be sourced from external # libraries, which are installed to $pkgauxdir. # Set a version string for this script. scriptversion=2019-02-19.15; # UTC # General shell script boiler plate, and helper functions. # Written by Gary V. Vaughan, 2004 # This is free software. There is NO warranty; not even for # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # # Copyright (C) 2004-2019, 2021 Bootstrap Authors # # This file is dual licensed under the terms of the MIT license # , and GPL version 2 or later # . You must apply one of # these licenses when using or redistributing this software or any of # the files within it. See the URLs above, or the file `LICENSE` # included in the Bootstrap distribution for the full license texts. # Please report bugs or propose patches to: # ## ------ ## ## Usage. ## ## ------ ## # Evaluate this file near the top of your script to gain access to # the functions and variables defined here: # # . `echo "$0" | ${SED-sed} 's|[^/]*$||'`/build-aux/funclib.sh # # If you need to override any of the default environment variable # settings, do that before evaluating this file. ## -------------------- ## ## Shell normalisation. ## ## -------------------- ## # Some shells need a little help to be as Bourne compatible as possible. # Before doing anything else, make sure all that help has been provided! DUALCASE=1; export DUALCASE # for MKS sh if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : emulate sh NULLCMD=: # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which # is contrary to our usage. Disable this feature. alias -g '${1+"$@"}'='"$@"' setopt NO_GLOB_SUBST else case `(set -o) 2>/dev/null` in *posix*) set -o posix ;; esac fi # NLS nuisances: We save the old values in case they are required later. _G_user_locale= _G_safe_locale= for _G_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES do eval "if test set = \"\${$_G_var+set}\"; then save_$_G_var=\$$_G_var $_G_var=C export $_G_var _G_user_locale=\"$_G_var=\\\$save_\$_G_var; \$_G_user_locale\" _G_safe_locale=\"$_G_var=C; \$_G_safe_locale\" fi" done # These NLS vars are set unconditionally (bootstrap issue #24). Unset those # in case the environment reset is needed later and the $save_* variant is not # defined (see the code above). LC_ALL=C LANGUAGE=C export LANGUAGE LC_ALL # Make sure IFS has a sensible default sp=' ' nl=' ' IFS="$sp $nl" # There are apparently some retarded systems that use ';' as a PATH separator! if test "${PATH_SEPARATOR+set}" != set; then PATH_SEPARATOR=: (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || PATH_SEPARATOR=';' } fi # func_unset VAR # -------------- # Portably unset VAR. # In some shells, an 'unset VAR' statement leaves a non-zero return # status if VAR is already unset, which might be problematic if the # statement is used at the end of a function (thus poisoning its return # value) or when 'set -e' is active (causing even a spurious abort of # the script in this case). func_unset () { { eval $1=; (eval unset $1) >/dev/null 2>&1 && eval unset $1 || : ; } } # Make sure CDPATH doesn't cause `cd` commands to output the target dir. func_unset CDPATH # Make sure ${,E,F}GREP behave sanely. func_unset GREP_OPTIONS ## ------------------------- ## ## Locate command utilities. ## ## ------------------------- ## # func_executable_p FILE # ---------------------- # Check that FILE is an executable regular file. func_executable_p () { test -f "$1" && test -x "$1" } # func_path_progs PROGS_LIST CHECK_FUNC [PATH] # -------------------------------------------- # Search for either a program that responds to --version with output # containing "GNU", or else returned by CHECK_FUNC otherwise, by # trying all the directories in PATH with each of the elements of # PROGS_LIST. # # CHECK_FUNC should accept the path to a candidate program, and # set $func_check_prog_result if it truncates its output less than # $_G_path_prog_max characters. func_path_progs () { _G_progs_list=$1 _G_check_func=$2 _G_PATH=${3-"$PATH"} _G_path_prog_max=0 _G_path_prog_found=false _G_save_IFS=$IFS; IFS=${PATH_SEPARATOR-:} for _G_dir in $_G_PATH; do IFS=$_G_save_IFS test -z "$_G_dir" && _G_dir=. for _G_prog_name in $_G_progs_list; do for _exeext in '' .EXE; do _G_path_prog=$_G_dir/$_G_prog_name$_exeext func_executable_p "$_G_path_prog" || continue case `"$_G_path_prog" --version 2>&1` in *GNU*) func_path_progs_result=$_G_path_prog _G_path_prog_found=: ;; *) $_G_check_func $_G_path_prog func_path_progs_result=$func_check_prog_result ;; esac $_G_path_prog_found && break 3 done done done IFS=$_G_save_IFS test -z "$func_path_progs_result" && { echo "no acceptable sed could be found in \$PATH" >&2 exit 1 } } # We want to be able to use the functions in this file before configure # has figured out where the best binaries are kept, which means we have # to search for them ourselves - except when the results are already set # where we skip the searches. # Unless the user overrides by setting SED, search the path for either GNU # sed, or the sed that truncates its output the least. test -z "$SED" && { _G_sed_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/ for _G_i in 1 2 3 4 5 6 7; do _G_sed_script=$_G_sed_script$nl$_G_sed_script done echo "$_G_sed_script" 2>/dev/null | sed 99q >conftest.sed _G_sed_script= func_check_prog_sed () { _G_path_prog=$1 _G_count=0 printf 0123456789 >conftest.in while : do cat conftest.in conftest.in >conftest.tmp mv conftest.tmp conftest.in cp conftest.in conftest.nl echo '' >> conftest.nl "$_G_path_prog" -f conftest.sed conftest.out 2>/dev/null || break diff conftest.out conftest.nl >/dev/null 2>&1 || break _G_count=`expr $_G_count + 1` if test "$_G_count" -gt "$_G_path_prog_max"; then # Best one so far, save it but keep looking for a better one func_check_prog_result=$_G_path_prog _G_path_prog_max=$_G_count fi # 10*(2^10) chars as input seems more than enough test 10 -lt "$_G_count" && break done rm -f conftest.in conftest.tmp conftest.nl conftest.out } func_path_progs "sed gsed" func_check_prog_sed "$PATH:/usr/xpg4/bin" rm -f conftest.sed SED=$func_path_progs_result } # Unless the user overrides by setting GREP, search the path for either GNU # grep, or the grep that truncates its output the least. test -z "$GREP" && { func_check_prog_grep () { _G_path_prog=$1 _G_count=0 _G_path_prog_max=0 printf 0123456789 >conftest.in while : do cat conftest.in conftest.in >conftest.tmp mv conftest.tmp conftest.in cp conftest.in conftest.nl echo 'GREP' >> conftest.nl "$_G_path_prog" -e 'GREP$' -e '-(cannot match)-' conftest.out 2>/dev/null || break diff conftest.out conftest.nl >/dev/null 2>&1 || break _G_count=`expr $_G_count + 1` if test "$_G_count" -gt "$_G_path_prog_max"; then # Best one so far, save it but keep looking for a better one func_check_prog_result=$_G_path_prog _G_path_prog_max=$_G_count fi # 10*(2^10) chars as input seems more than enough test 10 -lt "$_G_count" && break done rm -f conftest.in conftest.tmp conftest.nl conftest.out } func_path_progs "grep ggrep" func_check_prog_grep "$PATH:/usr/xpg4/bin" GREP=$func_path_progs_result } ## ------------------------------- ## ## User overridable command paths. ## ## ------------------------------- ## # All uppercase variable names are used for environment variables. These # variables can be overridden by the user before calling a script that # uses them if a suitable command of that name is not already available # in the command search PATH. : ${CP="cp -f"} : ${ECHO="printf %s\n"} : ${EGREP="$GREP -E"} : ${FGREP="$GREP -F"} : ${LN_S="ln -s"} : ${MAKE="make"} : ${MKDIR="mkdir"} : ${MV="mv -f"} : ${RM="rm -f"} : ${SHELL="${CONFIG_SHELL-/bin/sh}"} ## -------------------- ## ## Useful sed snippets. ## ## -------------------- ## sed_dirname='s|/[^/]*$||' sed_basename='s|^.*/||' # Sed substitution that helps us do robust quoting. It backslashifies # metacharacters that are still active within double-quoted strings. sed_quote_subst='s|\([`"$\\]\)|\\\1|g' # Same as above, but do not quote variable references. sed_double_quote_subst='s/\(["`\\]\)/\\\1/g' # Sed substitution that turns a string into a regex matching for the # string literally. sed_make_literal_regex='s|[].[^$\\*\/]|\\&|g' # Sed substitution that converts a w32 file name or path # that contains forward slashes, into one that contains # (escaped) backslashes. A very naive implementation. sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g' # Re-'\' parameter expansions in output of sed_double_quote_subst that # were '\'-ed in input to the same. If an odd number of '\' preceded a # '$' in input to sed_double_quote_subst, that '$' was protected from # expansion. Since each input '\' is now two '\'s, look for any number # of runs of four '\'s followed by two '\'s and then a '$'. '\' that '$'. _G_bs='\\' _G_bs2='\\\\' _G_bs4='\\\\\\\\' _G_dollar='\$' sed_double_backslash="\ s/$_G_bs4/&\\ /g s/^$_G_bs2$_G_dollar/$_G_bs&/ s/\\([^$_G_bs]\\)$_G_bs2$_G_dollar/\\1$_G_bs2$_G_bs$_G_dollar/g s/\n//g" # require_check_ifs_backslash # --------------------------- # Check if we can use backslash as IFS='\' separator, and set # $check_ifs_backshlash_broken to ':' or 'false'. require_check_ifs_backslash=func_require_check_ifs_backslash func_require_check_ifs_backslash () { _G_save_IFS=$IFS IFS='\' _G_check_ifs_backshlash='a\\b' for _G_i in $_G_check_ifs_backshlash do case $_G_i in a) check_ifs_backshlash_broken=false ;; '') break ;; *) check_ifs_backshlash_broken=: break ;; esac done IFS=$_G_save_IFS require_check_ifs_backslash=: } ## ----------------- ## ## Global variables. ## ## ----------------- ## # Except for the global variables explicitly listed below, the following # functions in the '^func_' namespace, and the '^require_' namespace # variables initialised in the 'Resource management' section, sourcing # this file will not pollute your global namespace with anything # else. There's no portable way to scope variables in Bourne shell # though, so actually running these functions will sometimes place # results into a variable named after the function, and often use # temporary variables in the '^_G_' namespace. If you are careful to # avoid using those namespaces casually in your sourcing script, things # should continue to work as you expect. And, of course, you can freely # overwrite any of the functions or variables defined here before # calling anything to customize them. EXIT_SUCCESS=0 EXIT_FAILURE=1 EXIT_MISMATCH=63 # $? = 63 is used to indicate version mismatch to missing. EXIT_SKIP=77 # $? = 77 is used to indicate a skipped test to automake. # Allow overriding, eg assuming that you follow the convention of # putting '$debug_cmd' at the start of all your functions, you can get # bash to show function call trace with: # # debug_cmd='eval echo "${FUNCNAME[0]} $*" >&2' bash your-script-name debug_cmd=${debug_cmd-":"} exit_cmd=: # By convention, finish your script with: # # exit $exit_status # # so that you can set exit_status to non-zero if you want to indicate # something went wrong during execution without actually bailing out at # the point of failure. exit_status=$EXIT_SUCCESS # Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh # is ksh but when the shell is invoked as "sh" and the current value of # the _XPG environment variable is not equal to 1 (one), the special # positional parameter $0, within a function call, is the name of the # function. progpath=$0 # The name of this program. progname=`$ECHO "$progpath" |$SED "$sed_basename"` # Make sure we have an absolute progpath for reexecution: case $progpath in [\\/]*|[A-Za-z]:\\*) ;; *[\\/]*) progdir=`$ECHO "$progpath" |$SED "$sed_dirname"` progdir=`cd "$progdir" && pwd` progpath=$progdir/$progname ;; *) _G_IFS=$IFS IFS=${PATH_SEPARATOR-:} for progdir in $PATH; do IFS=$_G_IFS test -x "$progdir/$progname" && break done IFS=$_G_IFS test -n "$progdir" || progdir=`pwd` progpath=$progdir/$progname ;; esac ## ----------------- ## ## Standard options. ## ## ----------------- ## # The following options affect the operation of the functions defined # below, and should be set appropriately depending on run-time para- # meters passed on the command line. opt_dry_run=false opt_quiet=false opt_verbose=false # Categories 'all' and 'none' are always available. Append any others # you will pass as the first argument to func_warning from your own # code. warning_categories= # By default, display warnings according to 'opt_warning_types'. Set # 'warning_func' to ':' to elide all warnings, or func_fatal_error to # treat the next displayed warning as a fatal error. warning_func=func_warn_and_continue # Set to 'all' to display all warnings, 'none' to suppress all # warnings, or a space delimited list of some subset of # 'warning_categories' to display only the listed warnings. opt_warning_types=all ## -------------------- ## ## Resource management. ## ## -------------------- ## # This section contains definitions for functions that each ensure a # particular resource (a file, or a non-empty configuration variable for # example) is available, and if appropriate to extract default values # from pertinent package files. Call them using their associated # 'require_*' variable to ensure that they are executed, at most, once. # # It's entirely deliberate that calling these functions can set # variables that don't obey the namespace limitations obeyed by the rest # of this file, in order that that they be as useful as possible to # callers. # require_term_colors # ------------------- # Allow display of bold text on terminals that support it. require_term_colors=func_require_term_colors func_require_term_colors () { $debug_cmd test -t 1 && { # COLORTERM and USE_ANSI_COLORS environment variables take # precedence, because most terminfo databases neglect to describe # whether color sequences are supported. test -n "${COLORTERM+set}" && : ${USE_ANSI_COLORS="1"} if test 1 = "$USE_ANSI_COLORS"; then # Standard ANSI escape sequences tc_reset='' tc_bold=''; tc_standout='' tc_red=''; tc_green='' tc_blue=''; tc_cyan='' else # Otherwise trust the terminfo database after all. test -n "`tput sgr0 2>/dev/null`" && { tc_reset=`tput sgr0` test -n "`tput bold 2>/dev/null`" && tc_bold=`tput bold` tc_standout=$tc_bold test -n "`tput smso 2>/dev/null`" && tc_standout=`tput smso` test -n "`tput setaf 1 2>/dev/null`" && tc_red=`tput setaf 1` test -n "`tput setaf 2 2>/dev/null`" && tc_green=`tput setaf 2` test -n "`tput setaf 4 2>/dev/null`" && tc_blue=`tput setaf 4` test -n "`tput setaf 5 2>/dev/null`" && tc_cyan=`tput setaf 5` } fi } require_term_colors=: } ## ----------------- ## ## Function library. ## ## ----------------- ## # This section contains a variety of useful functions to call in your # scripts. Take note of the portable wrappers for features provided by # some modern shells, which will fall back to slower equivalents on # less featureful shells. # func_append VAR VALUE # --------------------- # Append VALUE onto the existing contents of VAR. # We should try to minimise forks, especially on Windows where they are # unreasonably slow, so skip the feature probes when bash or zsh are # being used: if test set = "${BASH_VERSION+set}${ZSH_VERSION+set}"; then : ${_G_HAVE_ARITH_OP="yes"} : ${_G_HAVE_XSI_OPS="yes"} # The += operator was introduced in bash 3.1 case $BASH_VERSION in [12].* | 3.0 | 3.0*) ;; *) : ${_G_HAVE_PLUSEQ_OP="yes"} ;; esac fi # _G_HAVE_PLUSEQ_OP # Can be empty, in which case the shell is probed, "yes" if += is # useable or anything else if it does not work. test -z "$_G_HAVE_PLUSEQ_OP" \ && (eval 'x=a; x+=" b"; test "a b" = "$x"') 2>/dev/null \ && _G_HAVE_PLUSEQ_OP=yes if test yes = "$_G_HAVE_PLUSEQ_OP" then # This is an XSI compatible shell, allowing a faster implementation... eval 'func_append () { $debug_cmd eval "$1+=\$2" }' else # ...otherwise fall back to using expr, which is often a shell builtin. func_append () { $debug_cmd eval "$1=\$$1\$2" } fi # func_append_quoted VAR VALUE # ---------------------------- # Quote VALUE and append to the end of shell variable VAR, separated # by a space. if test yes = "$_G_HAVE_PLUSEQ_OP"; then eval 'func_append_quoted () { $debug_cmd func_quote_arg pretty "$2" eval "$1+=\\ \$func_quote_arg_result" }' else func_append_quoted () { $debug_cmd func_quote_arg pretty "$2" eval "$1=\$$1\\ \$func_quote_arg_result" } fi # func_append_uniq VAR VALUE # -------------------------- # Append unique VALUE onto the existing contents of VAR, assuming # entries are delimited by the first character of VALUE. For example: # # func_append_uniq options " --another-option option-argument" # # will only append to $options if " --another-option option-argument " # is not already present somewhere in $options already (note spaces at # each end implied by leading space in second argument). func_append_uniq () { $debug_cmd eval _G_current_value='`$ECHO $'$1'`' _G_delim=`expr "$2" : '\(.\)'` case $_G_delim$_G_current_value$_G_delim in *"$2$_G_delim"*) ;; *) func_append "$@" ;; esac } # func_arith TERM... # ------------------ # Set func_arith_result to the result of evaluating TERMs. test -z "$_G_HAVE_ARITH_OP" \ && (eval 'test 2 = $(( 1 + 1 ))') 2>/dev/null \ && _G_HAVE_ARITH_OP=yes if test yes = "$_G_HAVE_ARITH_OP"; then eval 'func_arith () { $debug_cmd func_arith_result=$(( $* )) }' else func_arith () { $debug_cmd func_arith_result=`expr "$@"` } fi # func_basename FILE # ------------------ # Set func_basename_result to FILE with everything up to and including # the last / stripped. if test yes = "$_G_HAVE_XSI_OPS"; then # If this shell supports suffix pattern removal, then use it to avoid # forking. Hide the definitions single quotes in case the shell chokes # on unsupported syntax... _b='func_basename_result=${1##*/}' _d='case $1 in */*) func_dirname_result=${1%/*}$2 ;; * ) func_dirname_result=$3 ;; esac' else # ...otherwise fall back to using sed. _b='func_basename_result=`$ECHO "$1" |$SED "$sed_basename"`' _d='func_dirname_result=`$ECHO "$1" |$SED "$sed_dirname"` if test "X$func_dirname_result" = "X$1"; then func_dirname_result=$3 else func_append func_dirname_result "$2" fi' fi eval 'func_basename () { $debug_cmd '"$_b"' }' # func_dirname FILE APPEND NONDIR_REPLACEMENT # ------------------------------------------- # Compute the dirname of FILE. If nonempty, add APPEND to the result, # otherwise set result to NONDIR_REPLACEMENT. eval 'func_dirname () { $debug_cmd '"$_d"' }' # func_dirname_and_basename FILE APPEND NONDIR_REPLACEMENT # -------------------------------------------------------- # Perform func_basename and func_dirname in a single function # call: # dirname: Compute the dirname of FILE. If nonempty, # add APPEND to the result, otherwise set result # to NONDIR_REPLACEMENT. # value returned in "$func_dirname_result" # basename: Compute filename of FILE. # value retuned in "$func_basename_result" # For efficiency, we do not delegate to the functions above but instead # duplicate the functionality here. eval 'func_dirname_and_basename () { $debug_cmd '"$_b"' '"$_d"' }' # func_echo ARG... # ---------------- # Echo program name prefixed message. func_echo () { $debug_cmd _G_message=$* func_echo_IFS=$IFS IFS=$nl for _G_line in $_G_message; do IFS=$func_echo_IFS $ECHO "$progname: $_G_line" done IFS=$func_echo_IFS } # func_echo_all ARG... # -------------------- # Invoke $ECHO with all args, space-separated. func_echo_all () { $ECHO "$*" } # func_echo_infix_1 INFIX ARG... # ------------------------------ # Echo program name, followed by INFIX on the first line, with any # additional lines not showing INFIX. func_echo_infix_1 () { $debug_cmd $require_term_colors _G_infix=$1; shift _G_indent=$_G_infix _G_prefix="$progname: $_G_infix: " _G_message=$* # Strip color escape sequences before counting printable length for _G_tc in "$tc_reset" "$tc_bold" "$tc_standout" "$tc_red" "$tc_green" "$tc_blue" "$tc_cyan" do test -n "$_G_tc" && { _G_esc_tc=`$ECHO "$_G_tc" | $SED "$sed_make_literal_regex"` _G_indent=`$ECHO "$_G_indent" | $SED "s|$_G_esc_tc||g"` } done _G_indent="$progname: "`echo "$_G_indent" | $SED 's|.| |g'`" " ## exclude from sc_prohibit_nested_quotes func_echo_infix_1_IFS=$IFS IFS=$nl for _G_line in $_G_message; do IFS=$func_echo_infix_1_IFS $ECHO "$_G_prefix$tc_bold$_G_line$tc_reset" >&2 _G_prefix=$_G_indent done IFS=$func_echo_infix_1_IFS } # func_error ARG... # ----------------- # Echo program name prefixed message to standard error. func_error () { $debug_cmd $require_term_colors func_echo_infix_1 " $tc_standout${tc_red}error$tc_reset" "$*" >&2 } # func_fatal_error ARG... # ----------------------- # Echo program name prefixed message to standard error, and exit. func_fatal_error () { $debug_cmd func_error "$*" exit $EXIT_FAILURE } # func_grep EXPRESSION FILENAME # ----------------------------- # Check whether EXPRESSION matches any line of FILENAME, without output. func_grep () { $debug_cmd $GREP "$1" "$2" >/dev/null 2>&1 } # func_len STRING # --------------- # Set func_len_result to the length of STRING. STRING may not # start with a hyphen. test -z "$_G_HAVE_XSI_OPS" \ && (eval 'x=a/b/c; test 5aa/bb/cc = "${#x}${x%%/*}${x%/*}${x#*/}${x##*/}"') 2>/dev/null \ && _G_HAVE_XSI_OPS=yes if test yes = "$_G_HAVE_XSI_OPS"; then eval 'func_len () { $debug_cmd func_len_result=${#1} }' else func_len () { $debug_cmd func_len_result=`expr "$1" : ".*" 2>/dev/null || echo $max_cmd_len` } fi # func_mkdir_p DIRECTORY-PATH # --------------------------- # Make sure the entire path to DIRECTORY-PATH is available. func_mkdir_p () { $debug_cmd _G_directory_path=$1 _G_dir_list= if test -n "$_G_directory_path" && test : != "$opt_dry_run"; then # Protect directory names starting with '-' case $_G_directory_path in -*) _G_directory_path=./$_G_directory_path ;; esac # While some portion of DIR does not yet exist... while test ! -d "$_G_directory_path"; do # ...make a list in topmost first order. Use a colon delimited # list incase some portion of path contains whitespace. _G_dir_list=$_G_directory_path:$_G_dir_list # If the last portion added has no slash in it, the list is done case $_G_directory_path in */*) ;; *) break ;; esac # ...otherwise throw away the child directory and loop _G_directory_path=`$ECHO "$_G_directory_path" | $SED -e "$sed_dirname"` done _G_dir_list=`$ECHO "$_G_dir_list" | $SED 's|:*$||'` func_mkdir_p_IFS=$IFS; IFS=: for _G_dir in $_G_dir_list; do IFS=$func_mkdir_p_IFS # mkdir can fail with a 'File exist' error if two processes # try to create one of the directories concurrently. Don't # stop in that case! $MKDIR "$_G_dir" 2>/dev/null || : done IFS=$func_mkdir_p_IFS # Bail out if we (or some other process) failed to create a directory. test -d "$_G_directory_path" || \ func_fatal_error "Failed to create '$1'" fi } # func_mktempdir [BASENAME] # ------------------------- # Make a temporary directory that won't clash with other running # libtool processes, and avoids race conditions if possible. If # given, BASENAME is the basename for that directory. func_mktempdir () { $debug_cmd _G_template=${TMPDIR-/tmp}/${1-$progname} if test : = "$opt_dry_run"; then # Return a directory name, but don't create it in dry-run mode _G_tmpdir=$_G_template-$$ else # If mktemp works, use that first and foremost _G_tmpdir=`mktemp -d "$_G_template-XXXXXXXX" 2>/dev/null` if test ! -d "$_G_tmpdir"; then # Failing that, at least try and use $RANDOM to avoid a race _G_tmpdir=$_G_template-${RANDOM-0}$$ func_mktempdir_umask=`umask` umask 0077 $MKDIR "$_G_tmpdir" umask $func_mktempdir_umask fi # If we're not in dry-run mode, bomb out on failure test -d "$_G_tmpdir" || \ func_fatal_error "cannot create temporary directory '$_G_tmpdir'" fi $ECHO "$_G_tmpdir" } # func_normal_abspath PATH # ------------------------ # Remove doubled-up and trailing slashes, "." path components, # and cancel out any ".." path components in PATH after making # it an absolute path. func_normal_abspath () { $debug_cmd # These SED scripts presuppose an absolute path with a trailing slash. _G_pathcar='s|^/\([^/]*\).*$|\1|' _G_pathcdr='s|^/[^/]*||' _G_removedotparts=':dotsl s|/\./|/|g t dotsl s|/\.$|/|' _G_collapseslashes='s|/\{1,\}|/|g' _G_finalslash='s|/*$|/|' # Start from root dir and reassemble the path. func_normal_abspath_result= func_normal_abspath_tpath=$1 func_normal_abspath_altnamespace= case $func_normal_abspath_tpath in "") # Empty path, that just means $cwd. func_stripname '' '/' "`pwd`" func_normal_abspath_result=$func_stripname_result return ;; # The next three entries are used to spot a run of precisely # two leading slashes without using negated character classes; # we take advantage of case's first-match behaviour. ///*) # Unusual form of absolute path, do nothing. ;; //*) # Not necessarily an ordinary path; POSIX reserves leading '//' # and for example Cygwin uses it to access remote file shares # over CIFS/SMB, so we conserve a leading double slash if found. func_normal_abspath_altnamespace=/ ;; /*) # Absolute path, do nothing. ;; *) # Relative path, prepend $cwd. func_normal_abspath_tpath=`pwd`/$func_normal_abspath_tpath ;; esac # Cancel out all the simple stuff to save iterations. We also want # the path to end with a slash for ease of parsing, so make sure # there is one (and only one) here. func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \ -e "$_G_removedotparts" -e "$_G_collapseslashes" -e "$_G_finalslash"` while :; do # Processed it all yet? if test / = "$func_normal_abspath_tpath"; then # If we ascended to the root using ".." the result may be empty now. if test -z "$func_normal_abspath_result"; then func_normal_abspath_result=/ fi break fi func_normal_abspath_tcomponent=`$ECHO "$func_normal_abspath_tpath" | $SED \ -e "$_G_pathcar"` func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \ -e "$_G_pathcdr"` # Figure out what to do with it case $func_normal_abspath_tcomponent in "") # Trailing empty path component, ignore it. ;; ..) # Parent dir; strip last assembled component from result. func_dirname "$func_normal_abspath_result" func_normal_abspath_result=$func_dirname_result ;; *) # Actual path component, append it. func_append func_normal_abspath_result "/$func_normal_abspath_tcomponent" ;; esac done # Restore leading double-slash if one was found on entry. func_normal_abspath_result=$func_normal_abspath_altnamespace$func_normal_abspath_result } # func_notquiet ARG... # -------------------- # Echo program name prefixed message only when not in quiet mode. func_notquiet () { $debug_cmd $opt_quiet || func_echo ${1+"$@"} # A bug in bash halts the script if the last line of a function # fails when set -e is in force, so we need another command to # work around that: : } # func_relative_path SRCDIR DSTDIR # -------------------------------- # Set func_relative_path_result to the relative path from SRCDIR to DSTDIR. func_relative_path () { $debug_cmd func_relative_path_result= func_normal_abspath "$1" func_relative_path_tlibdir=$func_normal_abspath_result func_normal_abspath "$2" func_relative_path_tbindir=$func_normal_abspath_result # Ascend the tree starting from libdir while :; do # check if we have found a prefix of bindir case $func_relative_path_tbindir in $func_relative_path_tlibdir) # found an exact match func_relative_path_tcancelled= break ;; $func_relative_path_tlibdir*) # found a matching prefix func_stripname "$func_relative_path_tlibdir" '' "$func_relative_path_tbindir" func_relative_path_tcancelled=$func_stripname_result if test -z "$func_relative_path_result"; then func_relative_path_result=. fi break ;; *) func_dirname $func_relative_path_tlibdir func_relative_path_tlibdir=$func_dirname_result if test -z "$func_relative_path_tlibdir"; then # Have to descend all the way to the root! func_relative_path_result=../$func_relative_path_result func_relative_path_tcancelled=$func_relative_path_tbindir break fi func_relative_path_result=../$func_relative_path_result ;; esac done # Now calculate path; take care to avoid doubling-up slashes. func_stripname '' '/' "$func_relative_path_result" func_relative_path_result=$func_stripname_result func_stripname '/' '/' "$func_relative_path_tcancelled" if test -n "$func_stripname_result"; then func_append func_relative_path_result "/$func_stripname_result" fi # Normalisation. If bindir is libdir, return '.' else relative path. if test -n "$func_relative_path_result"; then func_stripname './' '' "$func_relative_path_result" func_relative_path_result=$func_stripname_result fi test -n "$func_relative_path_result" || func_relative_path_result=. : } # func_quote_portable EVAL ARG # ---------------------------- # Internal function to portably implement func_quote_arg. Note that we still # keep attention to performance here so we as much as possible try to avoid # calling sed binary (so far O(N) complexity as long as func_append is O(1)). func_quote_portable () { $debug_cmd $require_check_ifs_backslash func_quote_portable_result=$2 # one-time-loop (easy break) while true do if $1; then func_quote_portable_result=`$ECHO "$2" | $SED \ -e "$sed_double_quote_subst" -e "$sed_double_backslash"` break fi # Quote for eval. case $func_quote_portable_result in *[\\\`\"\$]*) # Fallback to sed for $func_check_bs_ifs_broken=:, or when the string # contains the shell wildcard characters. case $check_ifs_backshlash_broken$func_quote_portable_result in :*|*[\[\*\?]*) func_quote_portable_result=`$ECHO "$func_quote_portable_result" \ | $SED "$sed_quote_subst"` break ;; esac func_quote_portable_old_IFS=$IFS for _G_char in '\' '`' '"' '$' do # STATE($1) PREV($2) SEPARATOR($3) set start "" "" func_quote_portable_result=dummy"$_G_char$func_quote_portable_result$_G_char"dummy IFS=$_G_char for _G_part in $func_quote_portable_result do case $1 in quote) func_append func_quote_portable_result "$3$2" set quote "$_G_part" "\\$_G_char" ;; start) set first "" "" func_quote_portable_result= ;; first) set quote "$_G_part" "" ;; esac done done IFS=$func_quote_portable_old_IFS ;; *) ;; esac break done func_quote_portable_unquoted_result=$func_quote_portable_result case $func_quote_portable_result in # double-quote args containing shell metacharacters to delay # word splitting, command substitution and variable expansion # for a subsequent eval. # many bourne shells cannot handle close brackets correctly # in scan sets, so we specify it separately. *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"") func_quote_portable_result=\"$func_quote_portable_result\" ;; esac } # func_quotefast_eval ARG # ----------------------- # Quote one ARG (internal). This is equivalent to 'func_quote_arg eval ARG', # but optimized for speed. Result is stored in $func_quotefast_eval. if test xyes = `(x=; printf -v x %q yes; echo x"$x") 2>/dev/null`; then printf -v _GL_test_printf_tilde %q '~' if test '\~' = "$_GL_test_printf_tilde"; then func_quotefast_eval () { printf -v func_quotefast_eval_result %q "$1" } else # Broken older Bash implementations. Make those faster too if possible. func_quotefast_eval () { case $1 in '~'*) func_quote_portable false "$1" func_quotefast_eval_result=$func_quote_portable_result ;; *) printf -v func_quotefast_eval_result %q "$1" ;; esac } fi else func_quotefast_eval () { func_quote_portable false "$1" func_quotefast_eval_result=$func_quote_portable_result } fi # func_quote_arg MODEs ARG # ------------------------ # Quote one ARG to be evaled later. MODEs argument may contain zero or more # specifiers listed below separated by ',' character. This function returns two # values: # i) func_quote_arg_result # double-quoted (when needed), suitable for a subsequent eval # ii) func_quote_arg_unquoted_result # has all characters that are still active within double # quotes backslashified. Available only if 'unquoted' is specified. # # Available modes: # ---------------- # 'eval' (default) # - escape shell special characters # 'expand' # - the same as 'eval'; but do not quote variable references # 'pretty' # - request aesthetic output, i.e. '"a b"' instead of 'a\ b'. This might # be used later in func_quote to get output like: 'echo "a b"' instead # of 'echo a\ b'. This is slower than default on some shells. # 'unquoted' # - produce also $func_quote_arg_unquoted_result which does not contain # wrapping double-quotes. # # Examples for 'func_quote_arg pretty,unquoted string': # # string | *_result | *_unquoted_result # ------------+-----------------------+------------------- # " | \" | \" # a b | "a b" | a b # "a b" | "\"a b\"" | \"a b\" # * | "*" | * # z="${x-$y}" | "z=\"\${x-\$y}\"" | z=\"\${x-\$y}\" # # Examples for 'func_quote_arg pretty,unquoted,expand string': # # string | *_result | *_unquoted_result # --------------+---------------------+-------------------- # z="${x-$y}" | "z=\"${x-$y}\"" | z=\"${x-$y}\" func_quote_arg () { _G_quote_expand=false case ,$1, in *,expand,*) _G_quote_expand=: ;; esac case ,$1, in *,pretty,*|*,expand,*|*,unquoted,*) func_quote_portable $_G_quote_expand "$2" func_quote_arg_result=$func_quote_portable_result func_quote_arg_unquoted_result=$func_quote_portable_unquoted_result ;; *) # Faster quote-for-eval for some shells. func_quotefast_eval "$2" func_quote_arg_result=$func_quotefast_eval_result ;; esac } # func_quote MODEs ARGs... # ------------------------ # Quote all ARGs to be evaled later and join them into single command. See # func_quote_arg's description for more info. func_quote () { $debug_cmd _G_func_quote_mode=$1 ; shift func_quote_result= while test 0 -lt $#; do func_quote_arg "$_G_func_quote_mode" "$1" if test -n "$func_quote_result"; then func_append func_quote_result " $func_quote_arg_result" else func_append func_quote_result "$func_quote_arg_result" fi shift done } # func_stripname PREFIX SUFFIX NAME # --------------------------------- # strip PREFIX and SUFFIX from NAME, and store in func_stripname_result. # PREFIX and SUFFIX must not contain globbing or regex special # characters, hashes, percent signs, but SUFFIX may contain a leading # dot (in which case that matches only a dot). if test yes = "$_G_HAVE_XSI_OPS"; then eval 'func_stripname () { $debug_cmd # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are # positional parameters, so assign one to ordinary variable first. func_stripname_result=$3 func_stripname_result=${func_stripname_result#"$1"} func_stripname_result=${func_stripname_result%"$2"} }' else func_stripname () { $debug_cmd case $2 in .*) func_stripname_result=`$ECHO "$3" | $SED -e "s%^$1%%" -e "s%\\\\$2\$%%"`;; *) func_stripname_result=`$ECHO "$3" | $SED -e "s%^$1%%" -e "s%$2\$%%"`;; esac } fi # func_show_eval CMD [FAIL_EXP] # ----------------------------- # Unless opt_quiet is true, then output CMD. Then, if opt_dryrun is # not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP # is given, then evaluate it. func_show_eval () { $debug_cmd _G_cmd=$1 _G_fail_exp=${2-':'} func_quote_arg pretty,expand "$_G_cmd" eval "func_notquiet $func_quote_arg_result" $opt_dry_run || { eval "$_G_cmd" _G_status=$? if test 0 -ne "$_G_status"; then eval "(exit $_G_status); $_G_fail_exp" fi } } # func_show_eval_locale CMD [FAIL_EXP] # ------------------------------------ # Unless opt_quiet is true, then output CMD. Then, if opt_dryrun is # not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP # is given, then evaluate it. Use the saved locale for evaluation. func_show_eval_locale () { $debug_cmd _G_cmd=$1 _G_fail_exp=${2-':'} $opt_quiet || { func_quote_arg expand,pretty "$_G_cmd" eval "func_echo $func_quote_arg_result" } $opt_dry_run || { eval "$_G_user_locale $_G_cmd" _G_status=$? eval "$_G_safe_locale" if test 0 -ne "$_G_status"; then eval "(exit $_G_status); $_G_fail_exp" fi } } # func_tr_sh # ---------- # Turn $1 into a string suitable for a shell variable name. # Result is stored in $func_tr_sh_result. All characters # not in the set a-zA-Z0-9_ are replaced with '_'. Further, # if $1 begins with a digit, a '_' is prepended as well. func_tr_sh () { $debug_cmd case $1 in [0-9]* | *[!a-zA-Z0-9_]*) func_tr_sh_result=`$ECHO "$1" | $SED -e 's/^\([0-9]\)/_\1/' -e 's/[^a-zA-Z0-9_]/_/g'` ;; * ) func_tr_sh_result=$1 ;; esac } # func_verbose ARG... # ------------------- # Echo program name prefixed message in verbose mode only. func_verbose () { $debug_cmd $opt_verbose && func_echo "$*" : } # func_warn_and_continue ARG... # ----------------------------- # Echo program name prefixed warning message to standard error. func_warn_and_continue () { $debug_cmd $require_term_colors func_echo_infix_1 "${tc_red}warning$tc_reset" "$*" >&2 } # func_warning CATEGORY ARG... # ---------------------------- # Echo program name prefixed warning message to standard error. Warning # messages can be filtered according to CATEGORY, where this function # elides messages where CATEGORY is not listed in the global variable # 'opt_warning_types'. func_warning () { $debug_cmd # CATEGORY must be in the warning_categories list! case " $warning_categories " in *" $1 "*) ;; *) func_internal_error "invalid warning category '$1'" ;; esac _G_category=$1 shift case " $opt_warning_types " in *" $_G_category "*) $warning_func ${1+"$@"} ;; esac } # func_sort_ver VER1 VER2 # ----------------------- # 'sort -V' is not generally available. # Note this deviates from the version comparison in automake # in that it treats 1.5 < 1.5.0, and treats 1.4.4a < 1.4-p3a # but this should suffice as we won't be specifying old # version formats or redundant trailing .0 in bootstrap.conf. # If we did want full compatibility then we should probably # use m4_version_compare from autoconf. func_sort_ver () { $debug_cmd printf '%s\n%s\n' "$1" "$2" \ | sort -t. -k 1,1n -k 2,2n -k 3,3n -k 4,4n -k 5,5n -k 6,6n -k 7,7n -k 8,8n -k 9,9n } # func_lt_ver PREV CURR # --------------------- # Return true if PREV and CURR are in the correct order according to # func_sort_ver, otherwise false. Use it like this: # # func_lt_ver "$prev_ver" "$proposed_ver" || func_fatal_error "..." func_lt_ver () { $debug_cmd test "x$1" = x`func_sort_ver "$1" "$2" | $SED 1q` } # Local variables: # mode: shell-script # sh-indentation: 2 # eval: (add-hook 'before-save-hook 'time-stamp) # time-stamp-pattern: "10/scriptversion=%:y-%02m-%02d.%02H; # UTC" # time-stamp-time-zone: "UTC" # End: #! /bin/sh # A portable, pluggable option parser for Bourne shell. # Written by Gary V. Vaughan, 2010 # This is free software. There is NO warranty; not even for # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # # Copyright (C) 2010-2019, 2021 Bootstrap Authors # # This file is dual licensed under the terms of the MIT license # , and GPL version 2 or later # . You must apply one of # these licenses when using or redistributing this software or any of # the files within it. See the URLs above, or the file `LICENSE` # included in the Bootstrap distribution for the full license texts. # Please report bugs or propose patches to: # # Set a version string for this script. scriptversion=2019-02-19.15; # UTC ## ------ ## ## Usage. ## ## ------ ## # This file is a library for parsing options in your shell scripts along # with assorted other useful supporting features that you can make use # of too. # # For the simplest scripts you might need only: # # #!/bin/sh # . relative/path/to/funclib.sh # . relative/path/to/options-parser # scriptversion=1.0 # func_options ${1+"$@"} # eval set dummy "$func_options_result"; shift # ...rest of your script... # # In order for the '--version' option to work, you will need to have a # suitably formatted comment like the one at the top of this file # starting with '# Written by ' and ending with '# Copyright'. # # For '-h' and '--help' to work, you will also need a one line # description of your script's purpose in a comment directly above the # '# Written by ' line, like the one at the top of this file. # # The default options also support '--debug', which will turn on shell # execution tracing (see the comment above debug_cmd below for another # use), and '--verbose' and the func_verbose function to allow your script # to display verbose messages only when your user has specified # '--verbose'. # # After sourcing this file, you can plug in processing for additional # options by amending the variables from the 'Configuration' section # below, and following the instructions in the 'Option parsing' # section further down. ## -------------- ## ## Configuration. ## ## -------------- ## # You should override these variables in your script after sourcing this # file so that they reflect the customisations you have added to the # option parser. # The usage line for option parsing errors and the start of '-h' and # '--help' output messages. You can embed shell variables for delayed # expansion at the time the message is displayed, but you will need to # quote other shell meta-characters carefully to prevent them being # expanded when the contents are evaled. usage='$progpath [OPTION]...' # Short help message in response to '-h' and '--help'. Add to this or # override it after sourcing this library to reflect the full set of # options your script accepts. usage_message="\ --debug enable verbose shell tracing -W, --warnings=CATEGORY report the warnings falling in CATEGORY [all] -v, --verbose verbosely report processing --version print version information and exit -h, --help print short or long help message and exit " # Additional text appended to 'usage_message' in response to '--help'. long_help_message=" Warning categories include: 'all' show all warnings 'none' turn off all the warnings 'error' warnings are treated as fatal errors" # Help message printed before fatal option parsing errors. fatal_help="Try '\$progname --help' for more information." ## ------------------------- ## ## Hook function management. ## ## ------------------------- ## # This section contains functions for adding, removing, and running hooks # in the main code. A hook is just a list of function names that can be # run in order later on. # func_hookable FUNC_NAME # ----------------------- # Declare that FUNC_NAME will run hooks added with # 'func_add_hook FUNC_NAME ...'. func_hookable () { $debug_cmd func_append hookable_fns " $1" } # func_add_hook FUNC_NAME HOOK_FUNC # --------------------------------- # Request that FUNC_NAME call HOOK_FUNC before it returns. FUNC_NAME must # first have been declared "hookable" by a call to 'func_hookable'. func_add_hook () { $debug_cmd case " $hookable_fns " in *" $1 "*) ;; *) func_fatal_error "'$1' does not accept hook functions." ;; esac eval func_append ${1}_hooks '" $2"' } # func_remove_hook FUNC_NAME HOOK_FUNC # ------------------------------------ # Remove HOOK_FUNC from the list of hook functions to be called by # FUNC_NAME. func_remove_hook () { $debug_cmd eval ${1}_hooks='`$ECHO "\$'$1'_hooks" |$SED "s| '$2'||"`' } # func_propagate_result FUNC_NAME_A FUNC_NAME_B # --------------------------------------------- # If the *_result variable of FUNC_NAME_A _is set_, assign its value to # *_result variable of FUNC_NAME_B. func_propagate_result () { $debug_cmd func_propagate_result_result=: if eval "test \"\${${1}_result+set}\" = set" then eval "${2}_result=\$${1}_result" else func_propagate_result_result=false fi } # func_run_hooks FUNC_NAME [ARG]... # --------------------------------- # Run all hook functions registered to FUNC_NAME. # It's assumed that the list of hook functions contains nothing more # than a whitespace-delimited list of legal shell function names, and # no effort is wasted trying to catch shell meta-characters or preserve # whitespace. func_run_hooks () { $debug_cmd case " $hookable_fns " in *" $1 "*) ;; *) func_fatal_error "'$1' does not support hook functions." ;; esac eval _G_hook_fns=\$$1_hooks; shift for _G_hook in $_G_hook_fns; do func_unset "${_G_hook}_result" eval $_G_hook '${1+"$@"}' func_propagate_result $_G_hook func_run_hooks if $func_propagate_result_result; then eval set dummy "$func_run_hooks_result"; shift fi done } ## --------------- ## ## Option parsing. ## ## --------------- ## # In order to add your own option parsing hooks, you must accept the # full positional parameter list from your hook function. You may remove # or edit any options that you action, and then pass back the remaining # unprocessed options in '_result', escaped # suitably for 'eval'. # # The '_result' variable is automatically unset # before your hook gets called; for best performance, only set the # *_result variable when necessary (i.e. don't call the 'func_quote' # function unnecessarily because it can be an expensive operation on some # machines). # # Like this: # # my_options_prep () # { # $debug_cmd # # # Extend the existing usage message. # usage_message=$usage_message' # -s, --silent don'\''t print informational messages # ' # # No change in '$@' (ignored completely by this hook). Leave # # my_options_prep_result variable intact. # } # func_add_hook func_options_prep my_options_prep # # # my_silent_option () # { # $debug_cmd # # args_changed=false # # # Note that, for efficiency, we parse as many options as we can # # recognise in a loop before passing the remainder back to the # # caller on the first unrecognised argument we encounter. # while test $# -gt 0; do # opt=$1; shift # case $opt in # --silent|-s) opt_silent=: # args_changed=: # ;; # # Separate non-argument short options: # -s*) func_split_short_opt "$_G_opt" # set dummy "$func_split_short_opt_name" \ # "-$func_split_short_opt_arg" ${1+"$@"} # shift # args_changed=: # ;; # *) # Make sure the first unrecognised option "$_G_opt" # # is added back to "$@" in case we need it later, # # if $args_changed was set to 'true'. # set dummy "$_G_opt" ${1+"$@"}; shift; break ;; # esac # done # # # Only call 'func_quote' here if we processed at least one argument. # if $args_changed; then # func_quote eval ${1+"$@"} # my_silent_option_result=$func_quote_result # fi # } # func_add_hook func_parse_options my_silent_option # # # my_option_validation () # { # $debug_cmd # # $opt_silent && $opt_verbose && func_fatal_help "\ # '--silent' and '--verbose' options are mutually exclusive." # } # func_add_hook func_validate_options my_option_validation # # You'll also need to manually amend $usage_message to reflect the extra # options you parse. It's preferable to append if you can, so that # multiple option parsing hooks can be added safely. # func_options_finish [ARG]... # ---------------------------- # Finishing the option parse loop (call 'func_options' hooks ATM). func_options_finish () { $debug_cmd func_run_hooks func_options ${1+"$@"} func_propagate_result func_run_hooks func_options_finish } # func_options [ARG]... # --------------------- # All the functions called inside func_options are hookable. See the # individual implementations for details. func_hookable func_options func_options () { $debug_cmd _G_options_quoted=false for my_func in options_prep parse_options validate_options options_finish do func_unset func_${my_func}_result func_unset func_run_hooks_result eval func_$my_func '${1+"$@"}' func_propagate_result func_$my_func func_options if $func_propagate_result_result; then eval set dummy "$func_options_result"; shift _G_options_quoted=: fi done $_G_options_quoted || { # As we (func_options) are top-level options-parser function and # nobody quoted "$@" for us yet, we need to do it explicitly for # caller. func_quote eval ${1+"$@"} func_options_result=$func_quote_result } } # func_options_prep [ARG]... # -------------------------- # All initialisations required before starting the option parse loop. # Note that when calling hook functions, we pass through the list of # positional parameters. If a hook function modifies that list, and # needs to propagate that back to rest of this script, then the complete # modified list must be put in 'func_run_hooks_result' before returning. func_hookable func_options_prep func_options_prep () { $debug_cmd # Option defaults: opt_verbose=false opt_warning_types= func_run_hooks func_options_prep ${1+"$@"} func_propagate_result func_run_hooks func_options_prep } # func_parse_options [ARG]... # --------------------------- # The main option parsing loop. func_hookable func_parse_options func_parse_options () { $debug_cmd _G_parse_options_requote=false # this just eases exit handling while test $# -gt 0; do # Defer to hook functions for initial option parsing, so they # get priority in the event of reusing an option name. func_run_hooks func_parse_options ${1+"$@"} func_propagate_result func_run_hooks func_parse_options if $func_propagate_result_result; then eval set dummy "$func_parse_options_result"; shift # Even though we may have changed "$@", we passed the "$@" array # down into the hook and it quoted it for us (because we are in # this if-branch). No need to quote it again. _G_parse_options_requote=false fi # Break out of the loop if we already parsed every option. test $# -gt 0 || break # We expect that one of the options parsed in this function matches # and thus we remove _G_opt from "$@" and need to re-quote. _G_match_parse_options=: _G_opt=$1 shift case $_G_opt in --debug|-x) debug_cmd='set -x' func_echo "enabling shell trace mode" >&2 $debug_cmd ;; --no-warnings|--no-warning|--no-warn) set dummy --warnings none ${1+"$@"} shift ;; --warnings|--warning|-W) if test $# = 0 && func_missing_arg $_G_opt; then _G_parse_options_requote=: break fi case " $warning_categories $1" in *" $1 "*) # trailing space prevents matching last $1 above func_append_uniq opt_warning_types " $1" ;; *all) opt_warning_types=$warning_categories ;; *none) opt_warning_types=none warning_func=: ;; *error) opt_warning_types=$warning_categories warning_func=func_fatal_error ;; *) func_fatal_error \ "unsupported warning category: '$1'" ;; esac shift ;; --verbose|-v) opt_verbose=: ;; --version) func_version ;; -\?|-h) func_usage ;; --help) func_help ;; # Separate optargs to long options (plugins may need this): --*=*) func_split_equals "$_G_opt" set dummy "$func_split_equals_lhs" \ "$func_split_equals_rhs" ${1+"$@"} shift ;; # Separate optargs to short options: -W*) func_split_short_opt "$_G_opt" set dummy "$func_split_short_opt_name" \ "$func_split_short_opt_arg" ${1+"$@"} shift ;; # Separate non-argument short options: -\?*|-h*|-v*|-x*) func_split_short_opt "$_G_opt" set dummy "$func_split_short_opt_name" \ "-$func_split_short_opt_arg" ${1+"$@"} shift ;; --) _G_parse_options_requote=: ; break ;; -*) func_fatal_help "unrecognised option: '$_G_opt'" ;; *) set dummy "$_G_opt" ${1+"$@"}; shift _G_match_parse_options=false break ;; esac if $_G_match_parse_options; then _G_parse_options_requote=: fi done if $_G_parse_options_requote; then # save modified positional parameters for caller func_quote eval ${1+"$@"} func_parse_options_result=$func_quote_result fi } # func_validate_options [ARG]... # ------------------------------ # Perform any sanity checks on option settings and/or unconsumed # arguments. func_hookable func_validate_options func_validate_options () { $debug_cmd # Display all warnings if -W was not given. test -n "$opt_warning_types" || opt_warning_types=" $warning_categories" func_run_hooks func_validate_options ${1+"$@"} func_propagate_result func_run_hooks func_validate_options # Bail if the options were screwed! $exit_cmd $EXIT_FAILURE } ## ----------------- ## ## Helper functions. ## ## ----------------- ## # This section contains the helper functions used by the rest of the # hookable option parser framework in ascii-betical order. # func_fatal_help ARG... # ---------------------- # Echo program name prefixed message to standard error, followed by # a help hint, and exit. func_fatal_help () { $debug_cmd eval \$ECHO \""Usage: $usage"\" eval \$ECHO \""$fatal_help"\" func_error ${1+"$@"} exit $EXIT_FAILURE } # func_help # --------- # Echo long help message to standard output and exit. func_help () { $debug_cmd func_usage_message $ECHO "$long_help_message" exit 0 } # func_missing_arg ARGNAME # ------------------------ # Echo program name prefixed message to standard error and set global # exit_cmd. func_missing_arg () { $debug_cmd func_error "Missing argument for '$1'." exit_cmd=exit } # func_split_equals STRING # ------------------------ # Set func_split_equals_lhs and func_split_equals_rhs shell variables # after splitting STRING at the '=' sign. test -z "$_G_HAVE_XSI_OPS" \ && (eval 'x=a/b/c; test 5aa/bb/cc = "${#x}${x%%/*}${x%/*}${x#*/}${x##*/}"') 2>/dev/null \ && _G_HAVE_XSI_OPS=yes if test yes = "$_G_HAVE_XSI_OPS" then # This is an XSI compatible shell, allowing a faster implementation... eval 'func_split_equals () { $debug_cmd func_split_equals_lhs=${1%%=*} func_split_equals_rhs=${1#*=} if test "x$func_split_equals_lhs" = "x$1"; then func_split_equals_rhs= fi }' else # ...otherwise fall back to using expr, which is often a shell builtin. func_split_equals () { $debug_cmd func_split_equals_lhs=`expr "x$1" : 'x\([^=]*\)'` func_split_equals_rhs= test "x$func_split_equals_lhs=" = "x$1" \ || func_split_equals_rhs=`expr "x$1" : 'x[^=]*=\(.*\)$'` } fi #func_split_equals # func_split_short_opt SHORTOPT # ----------------------------- # Set func_split_short_opt_name and func_split_short_opt_arg shell # variables after splitting SHORTOPT after the 2nd character. if test yes = "$_G_HAVE_XSI_OPS" then # This is an XSI compatible shell, allowing a faster implementation... eval 'func_split_short_opt () { $debug_cmd func_split_short_opt_arg=${1#??} func_split_short_opt_name=${1%"$func_split_short_opt_arg"} }' else # ...otherwise fall back to using expr, which is often a shell builtin. func_split_short_opt () { $debug_cmd func_split_short_opt_name=`expr "x$1" : 'x\(-.\)'` func_split_short_opt_arg=`expr "x$1" : 'x-.\(.*\)$'` } fi #func_split_short_opt # func_usage # ---------- # Echo short help message to standard output and exit. func_usage () { $debug_cmd func_usage_message $ECHO "Run '$progname --help |${PAGER-more}' for full usage" exit 0 } # func_usage_message # ------------------ # Echo short help message to standard output. func_usage_message () { $debug_cmd eval \$ECHO \""Usage: $usage"\" echo $SED -n 's|^# || /^Written by/{ x;p;x } h /^Written by/q' < "$progpath" echo eval \$ECHO \""$usage_message"\" } # func_version # ------------ # Echo version message to standard output and exit. # The version message is extracted from the calling file's header # comments, with leading '# ' stripped: # 1. First display the progname and version # 2. Followed by the header comment line matching /^# Written by / # 3. Then a blank line followed by the first following line matching # /^# Copyright / # 4. Immediately followed by any lines between the previous matches, # except lines preceding the intervening completely blank line. # For example, see the header comments of this file. func_version () { $debug_cmd printf '%s\n' "$progname $scriptversion" $SED -n ' /^# Written by /!b s|^# ||; p; n :fwd2blnk /./ { n b fwd2blnk } p; n :holdwrnt s|^# || s|^# *$|| /^Copyright /!{ /./H n b holdwrnt } s|\((C)\)[ 0-9,-]*[ ,-]\([1-9][0-9]* \)|\1 \2| G s|\(\n\)\n*|\1|g p; q' < "$progpath" exit $? } # Local variables: # mode: shell-script # sh-indentation: 2 # eval: (add-hook 'before-save-hook 'time-stamp) # time-stamp-pattern: "30/scriptversion=%:y-%02m-%02d.%02H; # UTC" # time-stamp-time-zone: "UTC" # End: # Set a version string. scriptversion='(GNU libtool) 2.4.7' # func_echo ARG... # ---------------- # Libtool also displays the current mode in messages, so override # funclib.sh func_echo with this custom definition. func_echo () { $debug_cmd _G_message=$* func_echo_IFS=$IFS IFS=$nl for _G_line in $_G_message; do IFS=$func_echo_IFS $ECHO "$progname${opt_mode+: $opt_mode}: $_G_line" done IFS=$func_echo_IFS } # func_warning ARG... # ------------------- # Libtool warnings are not categorized, so override funclib.sh # func_warning with this simpler definition. func_warning () { $debug_cmd $warning_func ${1+"$@"} } ## ---------------- ## ## Options parsing. ## ## ---------------- ## # Hook in the functions to make sure our own options are parsed during # the option parsing loop. usage='$progpath [OPTION]... [MODE-ARG]...' # Short help message in response to '-h'. usage_message="Options: --config show all configuration variables --debug enable verbose shell tracing -n, --dry-run display commands without modifying any files --features display basic configuration information and exit --mode=MODE use operation mode MODE --no-warnings equivalent to '-Wnone' --preserve-dup-deps don't remove duplicate dependency libraries --quiet, --silent don't print informational messages --tag=TAG use configuration variables from tag TAG -v, --verbose print more informational messages than default --version print version information -W, --warnings=CATEGORY report the warnings falling in CATEGORY [all] -h, --help, --help-all print short, long, or detailed help message " # Additional text appended to 'usage_message' in response to '--help'. func_help () { $debug_cmd func_usage_message $ECHO "$long_help_message MODE must be one of the following: clean remove files from the build directory compile compile a source file into a libtool object execute automatically set library path, then run a program finish complete the installation of libtool libraries install install libraries or executables link create a library or an executable uninstall remove libraries from an installed directory MODE-ARGS vary depending on the MODE. When passed as first option, '--mode=MODE' may be abbreviated as 'MODE' or a unique abbreviation of that. Try '$progname --help --mode=MODE' for a more detailed description of MODE. When reporting a bug, please describe a test case to reproduce it and include the following information: host-triplet: $host shell: $SHELL compiler: $LTCC compiler flags: $LTCFLAGS linker: $LD (gnu? $with_gnu_ld) version: $progname (GNU libtool) 2.4.7 automake: `($AUTOMAKE --version) 2>/dev/null |$SED 1q` autoconf: `($AUTOCONF --version) 2>/dev/null |$SED 1q` Report bugs to . GNU libtool home page: . General help using GNU software: ." exit 0 } # func_lo2o OBJECT-NAME # --------------------- # Transform OBJECT-NAME from a '.lo' suffix to the platform specific # object suffix. lo2o=s/\\.lo\$/.$objext/ o2lo=s/\\.$objext\$/.lo/ if test yes = "$_G_HAVE_XSI_OPS"; then eval 'func_lo2o () { case $1 in *.lo) func_lo2o_result=${1%.lo}.$objext ;; * ) func_lo2o_result=$1 ;; esac }' # func_xform LIBOBJ-OR-SOURCE # --------------------------- # Transform LIBOBJ-OR-SOURCE from a '.o' or '.c' (or otherwise) # suffix to a '.lo' libtool-object suffix. eval 'func_xform () { func_xform_result=${1%.*}.lo }' else # ...otherwise fall back to using sed. func_lo2o () { func_lo2o_result=`$ECHO "$1" | $SED "$lo2o"` } func_xform () { func_xform_result=`$ECHO "$1" | $SED 's|\.[^.]*$|.lo|'` } fi # func_fatal_configuration ARG... # ------------------------------- # Echo program name prefixed message to standard error, followed by # a configuration failure hint, and exit. func_fatal_configuration () { func_fatal_error ${1+"$@"} \ "See the $PACKAGE documentation for more information." \ "Fatal configuration error." } # func_config # ----------- # Display the configuration for all the tags in this script. func_config () { re_begincf='^# ### BEGIN LIBTOOL' re_endcf='^# ### END LIBTOOL' # Default configuration. $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath" # Now print the configurations for the tags. for tagname in $taglist; do $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath" done exit $? } # func_features # ------------- # Display the features supported by this script. func_features () { echo "host: $host" if test yes = "$build_libtool_libs"; then echo "enable shared libraries" else echo "disable shared libraries" fi if test yes = "$build_old_libs"; then echo "enable static libraries" else echo "disable static libraries" fi exit $? } # func_enable_tag TAGNAME # ----------------------- # Verify that TAGNAME is valid, and either flag an error and exit, or # enable the TAGNAME tag. We also add TAGNAME to the global $taglist # variable here. func_enable_tag () { # Global variable: tagname=$1 re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$" re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$" sed_extractcf=/$re_begincf/,/$re_endcf/p # Validate tagname. case $tagname in *[!-_A-Za-z0-9,/]*) func_fatal_error "invalid tag name: $tagname" ;; esac # Don't test for the "default" C tag, as we know it's # there but not specially marked. case $tagname in CC) ;; *) if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then taglist="$taglist $tagname" # Evaluate the configuration. Be careful to quote the path # and the sed script, to avoid splitting on whitespace, but # also don't use non-portable quotes within backquotes within # quotes we have to do it in 2 steps: extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"` eval "$extractedcf" else func_error "ignoring unknown tag $tagname" fi ;; esac } # func_check_version_match # ------------------------ # Ensure that we are using m4 macros, and libtool script from the same # release of libtool. func_check_version_match () { if test "$package_revision" != "$macro_revision"; then if test "$VERSION" != "$macro_version"; then if test -z "$macro_version"; then cat >&2 <<_LT_EOF $progname: Version mismatch error. This is $PACKAGE $VERSION, but the $progname: definition of this LT_INIT comes from an older release. $progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION $progname: and run autoconf again. _LT_EOF else cat >&2 <<_LT_EOF $progname: Version mismatch error. This is $PACKAGE $VERSION, but the $progname: definition of this LT_INIT comes from $PACKAGE $macro_version. $progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION $progname: and run autoconf again. _LT_EOF fi else cat >&2 <<_LT_EOF $progname: Version mismatch error. This is $PACKAGE $VERSION, revision $package_revision, $progname: but the definition of this LT_INIT comes from revision $macro_revision. $progname: You should recreate aclocal.m4 with macros from revision $package_revision $progname: of $PACKAGE $VERSION and run autoconf again. _LT_EOF fi exit $EXIT_MISMATCH fi } # libtool_options_prep [ARG]... # ----------------------------- # Preparation for options parsed by libtool. libtool_options_prep () { $debug_mode # Option defaults: opt_config=false opt_dlopen= opt_dry_run=false opt_help=false opt_mode= opt_preserve_dup_deps=false opt_quiet=false nonopt= preserve_args= _G_rc_lt_options_prep=: # Shorthand for --mode=foo, only valid as the first argument case $1 in clean|clea|cle|cl) shift; set dummy --mode clean ${1+"$@"}; shift ;; compile|compil|compi|comp|com|co|c) shift; set dummy --mode compile ${1+"$@"}; shift ;; execute|execut|execu|exec|exe|ex|e) shift; set dummy --mode execute ${1+"$@"}; shift ;; finish|finis|fini|fin|fi|f) shift; set dummy --mode finish ${1+"$@"}; shift ;; install|instal|insta|inst|ins|in|i) shift; set dummy --mode install ${1+"$@"}; shift ;; link|lin|li|l) shift; set dummy --mode link ${1+"$@"}; shift ;; uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u) shift; set dummy --mode uninstall ${1+"$@"}; shift ;; *) _G_rc_lt_options_prep=false ;; esac if $_G_rc_lt_options_prep; then # Pass back the list of options. func_quote eval ${1+"$@"} libtool_options_prep_result=$func_quote_result fi } func_add_hook func_options_prep libtool_options_prep # libtool_parse_options [ARG]... # --------------------------------- # Provide handling for libtool specific options. libtool_parse_options () { $debug_cmd _G_rc_lt_parse_options=false # Perform our own loop to consume as many options as possible in # each iteration. while test $# -gt 0; do _G_match_lt_parse_options=: _G_opt=$1 shift case $_G_opt in --dry-run|--dryrun|-n) opt_dry_run=: ;; --config) func_config ;; --dlopen|-dlopen) opt_dlopen="${opt_dlopen+$opt_dlopen }$1" shift ;; --preserve-dup-deps) opt_preserve_dup_deps=: ;; --features) func_features ;; --finish) set dummy --mode finish ${1+"$@"}; shift ;; --help) opt_help=: ;; --help-all) opt_help=': help-all' ;; --mode) test $# = 0 && func_missing_arg $_G_opt && break opt_mode=$1 case $1 in # Valid mode arguments: clean|compile|execute|finish|install|link|relink|uninstall) ;; # Catch anything else as an error *) func_error "invalid argument for $_G_opt" exit_cmd=exit break ;; esac shift ;; --no-silent|--no-quiet) opt_quiet=false func_append preserve_args " $_G_opt" ;; --no-warnings|--no-warning|--no-warn) opt_warning=false func_append preserve_args " $_G_opt" ;; --no-verbose) opt_verbose=false func_append preserve_args " $_G_opt" ;; --silent|--quiet) opt_quiet=: opt_verbose=false func_append preserve_args " $_G_opt" ;; --tag) test $# = 0 && func_missing_arg $_G_opt && break opt_tag=$1 func_append preserve_args " $_G_opt $1" func_enable_tag "$1" shift ;; --verbose|-v) opt_quiet=false opt_verbose=: func_append preserve_args " $_G_opt" ;; # An option not handled by this hook function: *) set dummy "$_G_opt" ${1+"$@"} ; shift _G_match_lt_parse_options=false break ;; esac $_G_match_lt_parse_options && _G_rc_lt_parse_options=: done if $_G_rc_lt_parse_options; then # save modified positional parameters for caller func_quote eval ${1+"$@"} libtool_parse_options_result=$func_quote_result fi } func_add_hook func_parse_options libtool_parse_options # libtool_validate_options [ARG]... # --------------------------------- # Perform any sanity checks on option settings and/or unconsumed # arguments. libtool_validate_options () { # save first non-option argument if test 0 -lt $#; then nonopt=$1 shift fi # preserve --debug test : = "$debug_cmd" || func_append preserve_args " --debug" # Keeping compiler generated duplicates in $postdeps and $predeps is not # harmful, and is necessary in a majority of systems that use it to satisfy # symbol dependencies. opt_duplicate_compiler_generated_deps=: $opt_help || { # Sanity checks first: func_check_version_match test yes != "$build_libtool_libs" \ && test yes != "$build_old_libs" \ && func_fatal_configuration "not configured to build any kind of library" # Darwin sucks eval std_shrext=\"$shrext_cmds\" # Only execute mode is allowed to have -dlopen flags. if test -n "$opt_dlopen" && test execute != "$opt_mode"; then func_error "unrecognized option '-dlopen'" $ECHO "$help" 1>&2 exit $EXIT_FAILURE fi # Change the help message to a mode-specific one. generic_help=$help help="Try '$progname --help --mode=$opt_mode' for more information." } # Pass back the unparsed argument list func_quote eval ${1+"$@"} libtool_validate_options_result=$func_quote_result } func_add_hook func_validate_options libtool_validate_options # Process options as early as possible so that --help and --version # can return quickly. func_options ${1+"$@"} eval set dummy "$func_options_result"; shift ## ----------- ## ## Main. ## ## ----------- ## magic='%%%MAGIC variable%%%' magic_exe='%%%MAGIC EXE variable%%%' # Global variables. extracted_archives= extracted_serial=0 # If this variable is set in any of the actions, the command in it # will be execed at the end. This prevents here-documents from being # left over by shells. exec_cmd= # A function that is used when there is no print builtin or printf. func_fallback_echo () { eval 'cat <<_LTECHO_EOF $1 _LTECHO_EOF' } # func_generated_by_libtool # True iff stdin has been generated by Libtool. This function is only # a basic sanity check; it will hardly flush out determined imposters. func_generated_by_libtool_p () { $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1 } # func_lalib_p file # True iff FILE is a libtool '.la' library or '.lo' object file. # This function is only a basic sanity check; it will hardly flush out # determined imposters. func_lalib_p () { test -f "$1" && $SED -e 4q "$1" 2>/dev/null | func_generated_by_libtool_p } # func_lalib_unsafe_p file # True iff FILE is a libtool '.la' library or '.lo' object file. # This function implements the same check as func_lalib_p without # resorting to external programs. To this end, it redirects stdin and # closes it afterwards, without saving the original file descriptor. # As a safety measure, use it only where a negative result would be # fatal anyway. Works if 'file' does not exist. func_lalib_unsafe_p () { lalib_p=no if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then for lalib_p_l in 1 2 3 4 do read lalib_p_line case $lalib_p_line in \#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;; esac done exec 0<&5 5<&- fi test yes = "$lalib_p" } # func_ltwrapper_script_p file # True iff FILE is a libtool wrapper script # This function is only a basic sanity check; it will hardly flush out # determined imposters. func_ltwrapper_script_p () { test -f "$1" && $lt_truncate_bin < "$1" 2>/dev/null | func_generated_by_libtool_p } # func_ltwrapper_executable_p file # True iff FILE is a libtool wrapper executable # This function is only a basic sanity check; it will hardly flush out # determined imposters. func_ltwrapper_executable_p () { func_ltwrapper_exec_suffix= case $1 in *.exe) ;; *) func_ltwrapper_exec_suffix=.exe ;; esac $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1 } # func_ltwrapper_scriptname file # Assumes file is an ltwrapper_executable # uses $file to determine the appropriate filename for a # temporary ltwrapper_script. func_ltwrapper_scriptname () { func_dirname_and_basename "$1" "" "." func_stripname '' '.exe' "$func_basename_result" func_ltwrapper_scriptname_result=$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper } # func_ltwrapper_p file # True iff FILE is a libtool wrapper script or wrapper executable # This function is only a basic sanity check; it will hardly flush out # determined imposters. func_ltwrapper_p () { func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1" } # func_execute_cmds commands fail_cmd # Execute tilde-delimited COMMANDS. # If FAIL_CMD is given, eval that upon failure. # FAIL_CMD may read-access the current command in variable CMD! func_execute_cmds () { $debug_cmd save_ifs=$IFS; IFS='~' for cmd in $1; do IFS=$sp$nl eval cmd=\"$cmd\" IFS=$save_ifs func_show_eval "$cmd" "${2-:}" done IFS=$save_ifs } # func_source file # Source FILE, adding directory component if necessary. # Note that it is not necessary on cygwin/mingw to append a dot to # FILE even if both FILE and FILE.exe exist: automatic-append-.exe # behavior happens only for exec(3), not for open(2)! Also, sourcing # 'FILE.' does not work on cygwin managed mounts. func_source () { $debug_cmd case $1 in */* | *\\*) . "$1" ;; *) . "./$1" ;; esac } # func_resolve_sysroot PATH # Replace a leading = in PATH with a sysroot. Store the result into # func_resolve_sysroot_result func_resolve_sysroot () { func_resolve_sysroot_result=$1 case $func_resolve_sysroot_result in =*) func_stripname '=' '' "$func_resolve_sysroot_result" func_resolve_sysroot_result=$lt_sysroot$func_stripname_result ;; esac } # func_replace_sysroot PATH # If PATH begins with the sysroot, replace it with = and # store the result into func_replace_sysroot_result. func_replace_sysroot () { case $lt_sysroot:$1 in ?*:"$lt_sysroot"*) func_stripname "$lt_sysroot" '' "$1" func_replace_sysroot_result='='$func_stripname_result ;; *) # Including no sysroot. func_replace_sysroot_result=$1 ;; esac } # func_infer_tag arg # Infer tagged configuration to use if any are available and # if one wasn't chosen via the "--tag" command line option. # Only attempt this if the compiler in the base compile # command doesn't match the default compiler. # arg is usually of the form 'gcc ...' func_infer_tag () { $debug_cmd if test -n "$available_tags" && test -z "$tagname"; then CC_quoted= for arg in $CC; do func_append_quoted CC_quoted "$arg" done CC_expanded=`func_echo_all $CC` CC_quoted_expanded=`func_echo_all $CC_quoted` case $@ in # Blanks in the command may have been stripped by the calling shell, # but not from the CC environment variable when configure was run. " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \ " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) ;; # Blanks at the start of $base_compile will cause this to fail # if we don't check for them as well. *) for z in $available_tags; do if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then # Evaluate the configuration. eval "`$SED -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`" CC_quoted= for arg in $CC; do # Double-quote args containing other shell metacharacters. func_append_quoted CC_quoted "$arg" done CC_expanded=`func_echo_all $CC` CC_quoted_expanded=`func_echo_all $CC_quoted` case "$@ " in " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \ " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) # The compiler in the base compile command matches # the one in the tagged configuration. # Assume this is the tagged configuration we want. tagname=$z break ;; esac fi done # If $tagname still isn't set, then no tagged configuration # was found and let the user know that the "--tag" command # line option must be used. if test -z "$tagname"; then func_echo "unable to infer tagged configuration" func_fatal_error "specify a tag with '--tag'" # else # func_verbose "using $tagname tagged configuration" fi ;; esac fi } # func_write_libtool_object output_name pic_name nonpic_name # Create a libtool object file (analogous to a ".la" file), # but don't create it if we're doing a dry run. func_write_libtool_object () { write_libobj=$1 if test yes = "$build_libtool_libs"; then write_lobj=\'$2\' else write_lobj=none fi if test yes = "$build_old_libs"; then write_oldobj=\'$3\' else write_oldobj=none fi $opt_dry_run || { cat >${write_libobj}T </dev/null` if test "$?" -eq 0 && test -n "$func_convert_core_file_wine_to_w32_tmp"; then func_convert_core_file_wine_to_w32_result=`$ECHO "$func_convert_core_file_wine_to_w32_tmp" | $SED -e "$sed_naive_backslashify"` else func_convert_core_file_wine_to_w32_result= fi fi } # end: func_convert_core_file_wine_to_w32 # func_convert_core_path_wine_to_w32 ARG # Helper function used by path conversion functions when $build is *nix, and # $host is mingw, cygwin, or some other w32 environment. Relies on a correctly # configured wine environment available, with the winepath program in $build's # $PATH. Assumes ARG has no leading or trailing path separator characters. # # ARG is path to be converted from $build format to win32. # Result is available in $func_convert_core_path_wine_to_w32_result. # Unconvertible file (directory) names in ARG are skipped; if no directory names # are convertible, then the result may be empty. func_convert_core_path_wine_to_w32 () { $debug_cmd # unfortunately, winepath doesn't convert paths, only file names func_convert_core_path_wine_to_w32_result= if test -n "$1"; then oldIFS=$IFS IFS=: for func_convert_core_path_wine_to_w32_f in $1; do IFS=$oldIFS func_convert_core_file_wine_to_w32 "$func_convert_core_path_wine_to_w32_f" if test -n "$func_convert_core_file_wine_to_w32_result"; then if test -z "$func_convert_core_path_wine_to_w32_result"; then func_convert_core_path_wine_to_w32_result=$func_convert_core_file_wine_to_w32_result else func_append func_convert_core_path_wine_to_w32_result ";$func_convert_core_file_wine_to_w32_result" fi fi done IFS=$oldIFS fi } # end: func_convert_core_path_wine_to_w32 # func_cygpath ARGS... # Wrapper around calling the cygpath program via LT_CYGPATH. This is used when # when (1) $build is *nix and Cygwin is hosted via a wine environment; or (2) # $build is MSYS and $host is Cygwin, or (3) $build is Cygwin. In case (1) or # (2), returns the Cygwin file name or path in func_cygpath_result (input # file name or path is assumed to be in w32 format, as previously converted # from $build's *nix or MSYS format). In case (3), returns the w32 file name # or path in func_cygpath_result (input file name or path is assumed to be in # Cygwin format). Returns an empty string on error. # # ARGS are passed to cygpath, with the last one being the file name or path to # be converted. # # Specify the absolute *nix (or w32) name to cygpath in the LT_CYGPATH # environment variable; do not put it in $PATH. func_cygpath () { $debug_cmd if test -n "$LT_CYGPATH" && test -f "$LT_CYGPATH"; then func_cygpath_result=`$LT_CYGPATH "$@" 2>/dev/null` if test "$?" -ne 0; then # on failure, ensure result is empty func_cygpath_result= fi else func_cygpath_result= func_error "LT_CYGPATH is empty or specifies non-existent file: '$LT_CYGPATH'" fi } #end: func_cygpath # func_convert_core_msys_to_w32 ARG # Convert file name or path ARG from MSYS format to w32 format. Return # result in func_convert_core_msys_to_w32_result. func_convert_core_msys_to_w32 () { $debug_cmd # awkward: cmd appends spaces to result func_convert_core_msys_to_w32_result=`( cmd //c echo "$1" ) 2>/dev/null | $SED -e 's/[ ]*$//' -e "$sed_naive_backslashify"` } #end: func_convert_core_msys_to_w32 # func_convert_file_check ARG1 ARG2 # Verify that ARG1 (a file name in $build format) was converted to $host # format in ARG2. Otherwise, emit an error message, but continue (resetting # func_to_host_file_result to ARG1). func_convert_file_check () { $debug_cmd if test -z "$2" && test -n "$1"; then func_error "Could not determine host file name corresponding to" func_error " '$1'" func_error "Continuing, but uninstalled executables may not work." # Fallback: func_to_host_file_result=$1 fi } # end func_convert_file_check # func_convert_path_check FROM_PATHSEP TO_PATHSEP FROM_PATH TO_PATH # Verify that FROM_PATH (a path in $build format) was converted to $host # format in TO_PATH. Otherwise, emit an error message, but continue, resetting # func_to_host_file_result to a simplistic fallback value (see below). func_convert_path_check () { $debug_cmd if test -z "$4" && test -n "$3"; then func_error "Could not determine the host path corresponding to" func_error " '$3'" func_error "Continuing, but uninstalled executables may not work." # Fallback. This is a deliberately simplistic "conversion" and # should not be "improved". See libtool.info. if test "x$1" != "x$2"; then lt_replace_pathsep_chars="s|$1|$2|g" func_to_host_path_result=`echo "$3" | $SED -e "$lt_replace_pathsep_chars"` else func_to_host_path_result=$3 fi fi } # end func_convert_path_check # func_convert_path_front_back_pathsep FRONTPAT BACKPAT REPL ORIG # Modifies func_to_host_path_result by prepending REPL if ORIG matches FRONTPAT # and appending REPL if ORIG matches BACKPAT. func_convert_path_front_back_pathsep () { $debug_cmd case $4 in $1 ) func_to_host_path_result=$3$func_to_host_path_result ;; esac case $4 in $2 ) func_append func_to_host_path_result "$3" ;; esac } # end func_convert_path_front_back_pathsep ################################################## # $build to $host FILE NAME CONVERSION FUNCTIONS # ################################################## # invoked via '$to_host_file_cmd ARG' # # In each case, ARG is the path to be converted from $build to $host format. # Result will be available in $func_to_host_file_result. # func_to_host_file ARG # Converts the file name ARG from $build format to $host format. Return result # in func_to_host_file_result. func_to_host_file () { $debug_cmd $to_host_file_cmd "$1" } # end func_to_host_file # func_to_tool_file ARG LAZY # converts the file name ARG from $build format to toolchain format. Return # result in func_to_tool_file_result. If the conversion in use is listed # in (the comma separated) LAZY, no conversion takes place. func_to_tool_file () { $debug_cmd case ,$2, in *,"$to_tool_file_cmd",*) func_to_tool_file_result=$1 ;; *) $to_tool_file_cmd "$1" func_to_tool_file_result=$func_to_host_file_result ;; esac } # end func_to_tool_file # func_convert_file_noop ARG # Copy ARG to func_to_host_file_result. func_convert_file_noop () { func_to_host_file_result=$1 } # end func_convert_file_noop # func_convert_file_msys_to_w32 ARG # Convert file name ARG from (mingw) MSYS to (mingw) w32 format; automatic # conversion to w32 is not available inside the cwrapper. Returns result in # func_to_host_file_result. func_convert_file_msys_to_w32 () { $debug_cmd func_to_host_file_result=$1 if test -n "$1"; then func_convert_core_msys_to_w32 "$1" func_to_host_file_result=$func_convert_core_msys_to_w32_result fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_msys_to_w32 # func_convert_file_cygwin_to_w32 ARG # Convert file name ARG from Cygwin to w32 format. Returns result in # func_to_host_file_result. func_convert_file_cygwin_to_w32 () { $debug_cmd func_to_host_file_result=$1 if test -n "$1"; then # because $build is cygwin, we call "the" cygpath in $PATH; no need to use # LT_CYGPATH in this case. func_to_host_file_result=`cygpath -m "$1"` fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_cygwin_to_w32 # func_convert_file_nix_to_w32 ARG # Convert file name ARG from *nix to w32 format. Requires a wine environment # and a working winepath. Returns result in func_to_host_file_result. func_convert_file_nix_to_w32 () { $debug_cmd func_to_host_file_result=$1 if test -n "$1"; then func_convert_core_file_wine_to_w32 "$1" func_to_host_file_result=$func_convert_core_file_wine_to_w32_result fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_nix_to_w32 # func_convert_file_msys_to_cygwin ARG # Convert file name ARG from MSYS to Cygwin format. Requires LT_CYGPATH set. # Returns result in func_to_host_file_result. func_convert_file_msys_to_cygwin () { $debug_cmd func_to_host_file_result=$1 if test -n "$1"; then func_convert_core_msys_to_w32 "$1" func_cygpath -u "$func_convert_core_msys_to_w32_result" func_to_host_file_result=$func_cygpath_result fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_msys_to_cygwin # func_convert_file_nix_to_cygwin ARG # Convert file name ARG from *nix to Cygwin format. Requires Cygwin installed # in a wine environment, working winepath, and LT_CYGPATH set. Returns result # in func_to_host_file_result. func_convert_file_nix_to_cygwin () { $debug_cmd func_to_host_file_result=$1 if test -n "$1"; then # convert from *nix to w32, then use cygpath to convert from w32 to cygwin. func_convert_core_file_wine_to_w32 "$1" func_cygpath -u "$func_convert_core_file_wine_to_w32_result" func_to_host_file_result=$func_cygpath_result fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_nix_to_cygwin ############################################# # $build to $host PATH CONVERSION FUNCTIONS # ############################################# # invoked via '$to_host_path_cmd ARG' # # In each case, ARG is the path to be converted from $build to $host format. # The result will be available in $func_to_host_path_result. # # Path separators are also converted from $build format to $host format. If # ARG begins or ends with a path separator character, it is preserved (but # converted to $host format) on output. # # All path conversion functions are named using the following convention: # file name conversion function : func_convert_file_X_to_Y () # path conversion function : func_convert_path_X_to_Y () # where, for any given $build/$host combination the 'X_to_Y' value is the # same. If conversion functions are added for new $build/$host combinations, # the two new functions must follow this pattern, or func_init_to_host_path_cmd # will break. # func_init_to_host_path_cmd # Ensures that function "pointer" variable $to_host_path_cmd is set to the # appropriate value, based on the value of $to_host_file_cmd. to_host_path_cmd= func_init_to_host_path_cmd () { $debug_cmd if test -z "$to_host_path_cmd"; then func_stripname 'func_convert_file_' '' "$to_host_file_cmd" to_host_path_cmd=func_convert_path_$func_stripname_result fi } # func_to_host_path ARG # Converts the path ARG from $build format to $host format. Return result # in func_to_host_path_result. func_to_host_path () { $debug_cmd func_init_to_host_path_cmd $to_host_path_cmd "$1" } # end func_to_host_path # func_convert_path_noop ARG # Copy ARG to func_to_host_path_result. func_convert_path_noop () { func_to_host_path_result=$1 } # end func_convert_path_noop # func_convert_path_msys_to_w32 ARG # Convert path ARG from (mingw) MSYS to (mingw) w32 format; automatic # conversion to w32 is not available inside the cwrapper. Returns result in # func_to_host_path_result. func_convert_path_msys_to_w32 () { $debug_cmd func_to_host_path_result=$1 if test -n "$1"; then # Remove leading and trailing path separator characters from ARG. MSYS # behavior is inconsistent here; cygpath turns them into '.;' and ';.'; # and winepath ignores them completely. func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_convert_core_msys_to_w32 "$func_to_host_path_tmp1" func_to_host_path_result=$func_convert_core_msys_to_w32_result func_convert_path_check : ";" \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" fi } # end func_convert_path_msys_to_w32 # func_convert_path_cygwin_to_w32 ARG # Convert path ARG from Cygwin to w32 format. Returns result in # func_to_host_file_result. func_convert_path_cygwin_to_w32 () { $debug_cmd func_to_host_path_result=$1 if test -n "$1"; then # See func_convert_path_msys_to_w32: func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_to_host_path_result=`cygpath -m -p "$func_to_host_path_tmp1"` func_convert_path_check : ";" \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" fi } # end func_convert_path_cygwin_to_w32 # func_convert_path_nix_to_w32 ARG # Convert path ARG from *nix to w32 format. Requires a wine environment and # a working winepath. Returns result in func_to_host_file_result. func_convert_path_nix_to_w32 () { $debug_cmd func_to_host_path_result=$1 if test -n "$1"; then # See func_convert_path_msys_to_w32: func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1" func_to_host_path_result=$func_convert_core_path_wine_to_w32_result func_convert_path_check : ";" \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" fi } # end func_convert_path_nix_to_w32 # func_convert_path_msys_to_cygwin ARG # Convert path ARG from MSYS to Cygwin format. Requires LT_CYGPATH set. # Returns result in func_to_host_file_result. func_convert_path_msys_to_cygwin () { $debug_cmd func_to_host_path_result=$1 if test -n "$1"; then # See func_convert_path_msys_to_w32: func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_convert_core_msys_to_w32 "$func_to_host_path_tmp1" func_cygpath -u -p "$func_convert_core_msys_to_w32_result" func_to_host_path_result=$func_cygpath_result func_convert_path_check : : \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" : "$1" fi } # end func_convert_path_msys_to_cygwin # func_convert_path_nix_to_cygwin ARG # Convert path ARG from *nix to Cygwin format. Requires Cygwin installed in a # a wine environment, working winepath, and LT_CYGPATH set. Returns result in # func_to_host_file_result. func_convert_path_nix_to_cygwin () { $debug_cmd func_to_host_path_result=$1 if test -n "$1"; then # Remove leading and trailing path separator characters from # ARG. msys behavior is inconsistent here, cygpath turns them # into '.;' and ';.', and winepath ignores them completely. func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1" func_cygpath -u -p "$func_convert_core_path_wine_to_w32_result" func_to_host_path_result=$func_cygpath_result func_convert_path_check : : \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" : "$1" fi } # end func_convert_path_nix_to_cygwin # func_dll_def_p FILE # True iff FILE is a Windows DLL '.def' file. # Keep in sync with _LT_DLL_DEF_P in libtool.m4 func_dll_def_p () { $debug_cmd func_dll_def_p_tmp=`$SED -n \ -e 's/^[ ]*//' \ -e '/^\(;.*\)*$/d' \ -e 's/^\(EXPORTS\|LIBRARY\)\([ ].*\)*$/DEF/p' \ -e q \ "$1"` test DEF = "$func_dll_def_p_tmp" } # func_mode_compile arg... func_mode_compile () { $debug_cmd # Get the compilation command and the source file. base_compile= srcfile=$nonopt # always keep a non-empty value in "srcfile" suppress_opt=yes suppress_output= arg_mode=normal libobj= later= pie_flag= for arg do case $arg_mode in arg ) # do not "continue". Instead, add this to base_compile lastarg=$arg arg_mode=normal ;; target ) libobj=$arg arg_mode=normal continue ;; normal ) # Accept any command-line options. case $arg in -o) test -n "$libobj" && \ func_fatal_error "you cannot specify '-o' more than once" arg_mode=target continue ;; -pie | -fpie | -fPIE) func_append pie_flag " $arg" continue ;; -shared | -static | -prefer-pic | -prefer-non-pic) func_append later " $arg" continue ;; -no-suppress) suppress_opt=no continue ;; -Xcompiler) arg_mode=arg # the next one goes into the "base_compile" arg list continue # The current "srcfile" will either be retained or ;; # replaced later. I would guess that would be a bug. -Wc,*) func_stripname '-Wc,' '' "$arg" args=$func_stripname_result lastarg= save_ifs=$IFS; IFS=, for arg in $args; do IFS=$save_ifs func_append_quoted lastarg "$arg" done IFS=$save_ifs func_stripname ' ' '' "$lastarg" lastarg=$func_stripname_result # Add the arguments to base_compile. func_append base_compile " $lastarg" continue ;; *) # Accept the current argument as the source file. # The previous "srcfile" becomes the current argument. # lastarg=$srcfile srcfile=$arg ;; esac # case $arg ;; esac # case $arg_mode # Aesthetically quote the previous argument. func_append_quoted base_compile "$lastarg" done # for arg case $arg_mode in arg) func_fatal_error "you must specify an argument for -Xcompile" ;; target) func_fatal_error "you must specify a target with '-o'" ;; *) # Get the name of the library object. test -z "$libobj" && { func_basename "$srcfile" libobj=$func_basename_result } ;; esac # Recognize several different file suffixes. # If the user specifies -o file.o, it is replaced with file.lo case $libobj in *.[cCFSifmso] | \ *.ada | *.adb | *.ads | *.asm | \ *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \ *.[fF][09]? | *.for | *.java | *.go | *.obj | *.sx | *.cu | *.cup) func_xform "$libobj" libobj=$func_xform_result ;; esac case $libobj in *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;; *) func_fatal_error "cannot determine name of library object from '$libobj'" ;; esac func_infer_tag $base_compile for arg in $later; do case $arg in -shared) test yes = "$build_libtool_libs" \ || func_fatal_configuration "cannot build a shared library" build_old_libs=no continue ;; -static) build_libtool_libs=no build_old_libs=yes continue ;; -prefer-pic) pic_mode=yes continue ;; -prefer-non-pic) pic_mode=no continue ;; esac done func_quote_arg pretty "$libobj" test "X$libobj" != "X$func_quote_arg_result" \ && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"' &()|`$[]' \ && func_warning "libobj name '$libobj' may not contain shell special characters." func_dirname_and_basename "$obj" "/" "" objname=$func_basename_result xdir=$func_dirname_result lobj=$xdir$objdir/$objname test -z "$base_compile" && \ func_fatal_help "you must specify a compilation command" # Delete any leftover library objects. if test yes = "$build_old_libs"; then removelist="$obj $lobj $libobj ${libobj}T" else removelist="$lobj $libobj ${libobj}T" fi # On Cygwin there's no "real" PIC flag so we must build both object types case $host_os in cygwin* | mingw* | pw32* | os2* | cegcc*) pic_mode=default ;; esac if test no = "$pic_mode" && test pass_all != "$deplibs_check_method"; then # non-PIC code in shared libraries is not supported pic_mode=default fi # Calculate the filename of the output object if compiler does # not support -o with -c if test no = "$compiler_c_o"; then output_obj=`$ECHO "$srcfile" | $SED 's%^.*/%%; s%\.[^.]*$%%'`.$objext lockfile=$output_obj.lock else output_obj= need_locks=no lockfile= fi # Lock this critical section if it is needed # We use this script file to make the link, it avoids creating a new file if test yes = "$need_locks"; then until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do func_echo "Waiting for $lockfile to be removed" sleep 2 done elif test warn = "$need_locks"; then if test -f "$lockfile"; then $ECHO "\ *** ERROR, $lockfile exists and contains: `cat $lockfile 2>/dev/null` This indicates that another process is trying to use the same temporary object file, and libtool could not work around it because your compiler does not support '-c' and '-o' together. If you repeat this compilation, it may succeed, by chance, but you had better avoid parallel builds (make -j) in this platform, or get a better compiler." $opt_dry_run || $RM $removelist exit $EXIT_FAILURE fi func_append removelist " $output_obj" $ECHO "$srcfile" > "$lockfile" fi $opt_dry_run || $RM $removelist func_append removelist " $lockfile" trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15 func_to_tool_file "$srcfile" func_convert_file_msys_to_w32 srcfile=$func_to_tool_file_result func_quote_arg pretty "$srcfile" qsrcfile=$func_quote_arg_result # Only build a PIC object if we are building libtool libraries. if test yes = "$build_libtool_libs"; then # Without this assignment, base_compile gets emptied. fbsd_hideous_sh_bug=$base_compile if test no != "$pic_mode"; then command="$base_compile $qsrcfile $pic_flag" else # Don't build PIC code command="$base_compile $qsrcfile" fi func_mkdir_p "$xdir$objdir" if test -z "$output_obj"; then # Place PIC objects in $objdir func_append command " -o $lobj" fi func_show_eval_locale "$command" \ 'test -n "$output_obj" && $RM $removelist; exit $EXIT_FAILURE' if test warn = "$need_locks" && test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then $ECHO "\ *** ERROR, $lockfile contains: `cat $lockfile 2>/dev/null` but it should contain: $srcfile This indicates that another process is trying to use the same temporary object file, and libtool could not work around it because your compiler does not support '-c' and '-o' together. If you repeat this compilation, it may succeed, by chance, but you had better avoid parallel builds (make -j) in this platform, or get a better compiler." $opt_dry_run || $RM $removelist exit $EXIT_FAILURE fi # Just move the object if needed, then go on to compile the next one if test -n "$output_obj" && test "X$output_obj" != "X$lobj"; then func_show_eval '$MV "$output_obj" "$lobj"' \ 'error=$?; $opt_dry_run || $RM $removelist; exit $error' fi # Allow error messages only from the first compilation. if test yes = "$suppress_opt"; then suppress_output=' >/dev/null 2>&1' fi fi # Only build a position-dependent object if we build old libraries. if test yes = "$build_old_libs"; then if test yes != "$pic_mode"; then # Don't build PIC code command="$base_compile $qsrcfile$pie_flag" else command="$base_compile $qsrcfile $pic_flag" fi if test yes = "$compiler_c_o"; then func_append command " -o $obj" fi # Suppress compiler output if we already did a PIC compilation. func_append command "$suppress_output" func_show_eval_locale "$command" \ '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' if test warn = "$need_locks" && test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then $ECHO "\ *** ERROR, $lockfile contains: `cat $lockfile 2>/dev/null` but it should contain: $srcfile This indicates that another process is trying to use the same temporary object file, and libtool could not work around it because your compiler does not support '-c' and '-o' together. If you repeat this compilation, it may succeed, by chance, but you had better avoid parallel builds (make -j) in this platform, or get a better compiler." $opt_dry_run || $RM $removelist exit $EXIT_FAILURE fi # Just move the object if needed if test -n "$output_obj" && test "X$output_obj" != "X$obj"; then func_show_eval '$MV "$output_obj" "$obj"' \ 'error=$?; $opt_dry_run || $RM $removelist; exit $error' fi fi $opt_dry_run || { func_write_libtool_object "$libobj" "$objdir/$objname" "$objname" # Unlock the critical section if it was locked if test no != "$need_locks"; then removelist=$lockfile $RM "$lockfile" fi } exit $EXIT_SUCCESS } $opt_help || { test compile = "$opt_mode" && func_mode_compile ${1+"$@"} } func_mode_help () { # We need to display help for each of the modes. case $opt_mode in "") # Generic help is extracted from the usage comments # at the start of this file. func_help ;; clean) $ECHO \ "Usage: $progname [OPTION]... --mode=clean RM [RM-OPTION]... FILE... Remove files from the build directory. RM is the name of the program to use to delete files associated with each FILE (typically '/bin/rm'). RM-OPTIONS are options (such as '-f') to be passed to RM. If FILE is a libtool library, object or program, all the files associated with it are deleted. Otherwise, only FILE itself is deleted using RM." ;; compile) $ECHO \ "Usage: $progname [OPTION]... --mode=compile COMPILE-COMMAND... SOURCEFILE Compile a source file into a libtool library object. This mode accepts the following additional options: -o OUTPUT-FILE set the output file name to OUTPUT-FILE -no-suppress do not suppress compiler output for multiple passes -prefer-pic try to build PIC objects only -prefer-non-pic try to build non-PIC objects only -shared do not build a '.o' file suitable for static linking -static only build a '.o' file suitable for static linking -Wc,FLAG -Xcompiler FLAG pass FLAG directly to the compiler COMPILE-COMMAND is a command to be used in creating a 'standard' object file from the given SOURCEFILE. The output file name is determined by removing the directory component from SOURCEFILE, then substituting the C source code suffix '.c' with the library object suffix, '.lo'." ;; execute) $ECHO \ "Usage: $progname [OPTION]... --mode=execute COMMAND [ARGS]... Automatically set library path, then run a program. This mode accepts the following additional options: -dlopen FILE add the directory containing FILE to the library path This mode sets the library path environment variable according to '-dlopen' flags. If any of the ARGS are libtool executable wrappers, then they are translated into their corresponding uninstalled binary, and any of their required library directories are added to the library path. Then, COMMAND is executed, with ARGS as arguments." ;; finish) $ECHO \ "Usage: $progname [OPTION]... --mode=finish [LIBDIR]... Complete the installation of libtool libraries. Each LIBDIR is a directory that contains libtool libraries. The commands that this mode executes may require superuser privileges. Use the '--dry-run' option if you just want to see what would be executed." ;; install) $ECHO \ "Usage: $progname [OPTION]... --mode=install INSTALL-COMMAND... Install executables or libraries. INSTALL-COMMAND is the installation command. The first component should be either the 'install' or 'cp' program. The following components of INSTALL-COMMAND are treated specially: -inst-prefix-dir PREFIX-DIR Use PREFIX-DIR as a staging area for installation The rest of the components are interpreted as arguments to that command (only BSD-compatible install options are recognized)." ;; link) $ECHO \ "Usage: $progname [OPTION]... --mode=link LINK-COMMAND... Link object files or libraries together to form another library, or to create an executable program. LINK-COMMAND is a command using the C compiler that you would use to create a program from several object files. The following components of LINK-COMMAND are treated specially: -all-static do not do any dynamic linking at all -avoid-version do not add a version suffix if possible -bindir BINDIR specify path to binaries directory (for systems where libraries must be found in the PATH setting at runtime) -dlopen FILE '-dlpreopen' FILE if it cannot be dlopened at runtime -dlpreopen FILE link in FILE and add its symbols to lt_preloaded_symbols -export-dynamic allow symbols from OUTPUT-FILE to be resolved with dlsym(3) -export-symbols SYMFILE try to export only the symbols listed in SYMFILE -export-symbols-regex REGEX try to export only the symbols matching REGEX -LLIBDIR search LIBDIR for required installed libraries -lNAME OUTPUT-FILE requires the installed library libNAME -module build a library that can dlopened -no-fast-install disable the fast-install mode -no-install link a not-installable executable -no-undefined declare that a library does not refer to external symbols -o OUTPUT-FILE create OUTPUT-FILE from the specified objects -objectlist FILE use a list of object files found in FILE to specify objects -os2dllname NAME force a short DLL name on OS/2 (no effect on other OSes) -precious-files-regex REGEX don't remove output files matching REGEX -release RELEASE specify package release information -rpath LIBDIR the created library will eventually be installed in LIBDIR -R[ ]LIBDIR add LIBDIR to the runtime path of programs and libraries -shared only do dynamic linking of libtool libraries -shrext SUFFIX override the standard shared library file extension -static do not do any dynamic linking of uninstalled libtool libraries -static-libtool-libs do not do any dynamic linking of libtool libraries -version-info CURRENT[:REVISION[:AGE]] specify library version info [each variable defaults to 0] -weak LIBNAME declare that the target provides the LIBNAME interface -Wc,FLAG -Xcompiler FLAG pass linker-specific FLAG directly to the compiler -Wa,FLAG -Xassembler FLAG pass linker-specific FLAG directly to the assembler -Wl,FLAG -Xlinker FLAG pass linker-specific FLAG directly to the linker -XCClinker FLAG pass link-specific FLAG to the compiler driver (CC) All other options (arguments beginning with '-') are ignored. Every other argument is treated as a filename. Files ending in '.la' are treated as uninstalled libtool libraries, other files are standard or library object files. If the OUTPUT-FILE ends in '.la', then a libtool library is created, only library objects ('.lo' files) may be specified, and '-rpath' is required, except when creating a convenience library. If OUTPUT-FILE ends in '.a' or '.lib', then a standard library is created using 'ar' and 'ranlib', or on Windows using 'lib'. If OUTPUT-FILE ends in '.lo' or '.$objext', then a reloadable object file is created, otherwise an executable program is created." ;; uninstall) $ECHO \ "Usage: $progname [OPTION]... --mode=uninstall RM [RM-OPTION]... FILE... Remove libraries from an installation directory. RM is the name of the program to use to delete files associated with each FILE (typically '/bin/rm'). RM-OPTIONS are options (such as '-f') to be passed to RM. If FILE is a libtool library, all the files associated with it are deleted. Otherwise, only FILE itself is deleted using RM." ;; *) func_fatal_help "invalid operation mode '$opt_mode'" ;; esac echo $ECHO "Try '$progname --help' for more information about other modes." } # Now that we've collected a possible --mode arg, show help if necessary if $opt_help; then if test : = "$opt_help"; then func_mode_help else { func_help noexit for opt_mode in compile link execute install finish uninstall clean; do func_mode_help done } | $SED -n '1p; 2,$s/^Usage:/ or: /p' { func_help noexit for opt_mode in compile link execute install finish uninstall clean; do echo func_mode_help done } | $SED '1d /^When reporting/,/^Report/{ H d } $x /information about other modes/d /more detailed .*MODE/d s/^Usage:.*--mode=\([^ ]*\) .*/Description of \1 mode:/' fi exit $? fi # func_mode_execute arg... func_mode_execute () { $debug_cmd # The first argument is the command name. cmd=$nonopt test -z "$cmd" && \ func_fatal_help "you must specify a COMMAND" # Handle -dlopen flags immediately. for file in $opt_dlopen; do test -f "$file" \ || func_fatal_help "'$file' is not a file" dir= case $file in *.la) func_resolve_sysroot "$file" file=$func_resolve_sysroot_result # Check to see that this really is a libtool archive. func_lalib_unsafe_p "$file" \ || func_fatal_help "'$lib' is not a valid libtool archive" # Read the libtool library. dlname= library_names= func_source "$file" # Skip this library if it cannot be dlopened. if test -z "$dlname"; then # Warn if it was a shared library. test -n "$library_names" && \ func_warning "'$file' was not linked with '-export-dynamic'" continue fi func_dirname "$file" "" "." dir=$func_dirname_result if test -f "$dir/$objdir/$dlname"; then func_append dir "/$objdir" else if test ! -f "$dir/$dlname"; then func_fatal_error "cannot find '$dlname' in '$dir' or '$dir/$objdir'" fi fi ;; *.lo) # Just add the directory containing the .lo file. func_dirname "$file" "" "." dir=$func_dirname_result ;; *) func_warning "'-dlopen' is ignored for non-libtool libraries and objects" continue ;; esac # Get the absolute pathname. absdir=`cd "$dir" && pwd` test -n "$absdir" && dir=$absdir # Now add the directory to shlibpath_var. if eval "test -z \"\$$shlibpath_var\""; then eval "$shlibpath_var=\"\$dir\"" else eval "$shlibpath_var=\"\$dir:\$$shlibpath_var\"" fi done # This variable tells wrapper scripts just to set shlibpath_var # rather than running their programs. libtool_execute_magic=$magic # Check if any of the arguments is a wrapper script. args= for file do case $file in -* | *.la | *.lo ) ;; *) # Do a test to see if this is really a libtool program. if func_ltwrapper_script_p "$file"; then func_source "$file" # Transform arg to wrapped name. file=$progdir/$program elif func_ltwrapper_executable_p "$file"; then func_ltwrapper_scriptname "$file" func_source "$func_ltwrapper_scriptname_result" # Transform arg to wrapped name. file=$progdir/$program fi ;; esac # Quote arguments (to preserve shell metacharacters). func_append_quoted args "$file" done if $opt_dry_run; then # Display what would be done. if test -n "$shlibpath_var"; then eval "\$ECHO \"\$shlibpath_var=\$$shlibpath_var\"" echo "export $shlibpath_var" fi $ECHO "$cmd$args" exit $EXIT_SUCCESS else if test -n "$shlibpath_var"; then # Export the shlibpath_var. eval "export $shlibpath_var" fi # Restore saved environment variables for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES do eval "if test \"\${save_$lt_var+set}\" = set; then $lt_var=\$save_$lt_var; export $lt_var else $lt_unset $lt_var fi" done # Now prepare to actually exec the command. exec_cmd=\$cmd$args fi } test execute = "$opt_mode" && func_mode_execute ${1+"$@"} # func_mode_finish arg... func_mode_finish () { $debug_cmd libs= libdirs= admincmds= for opt in "$nonopt" ${1+"$@"} do if test -d "$opt"; then func_append libdirs " $opt" elif test -f "$opt"; then if func_lalib_unsafe_p "$opt"; then func_append libs " $opt" else func_warning "'$opt' is not a valid libtool archive" fi else func_fatal_error "invalid argument '$opt'" fi done if test -n "$libs"; then if test -n "$lt_sysroot"; then sysroot_regex=`$ECHO "$lt_sysroot" | $SED "$sed_make_literal_regex"` sysroot_cmd="s/\([ ']\)$sysroot_regex/\1/g;" else sysroot_cmd= fi # Remove sysroot references if $opt_dry_run; then for lib in $libs; do echo "removing references to $lt_sysroot and '=' prefixes from $lib" done else tmpdir=`func_mktempdir` for lib in $libs; do $SED -e "$sysroot_cmd s/\([ ']-[LR]\)=/\1/g; s/\([ ']\)=/\1/g" $lib \ > $tmpdir/tmp-la mv -f $tmpdir/tmp-la $lib done ${RM}r "$tmpdir" fi fi if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then for libdir in $libdirs; do if test -n "$finish_cmds"; then # Do each command in the finish commands. func_execute_cmds "$finish_cmds" 'admincmds="$admincmds '"$cmd"'"' fi if test -n "$finish_eval"; then # Do the single finish_eval. eval cmds=\"$finish_eval\" $opt_dry_run || eval "$cmds" || func_append admincmds " $cmds" fi done fi # Exit here if they wanted silent mode. $opt_quiet && exit $EXIT_SUCCESS if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then echo "----------------------------------------------------------------------" echo "Libraries have been installed in:" for libdir in $libdirs; do $ECHO " $libdir" done echo echo "If you ever happen to want to link against installed libraries" echo "in a given directory, LIBDIR, you must either use libtool, and" echo "specify the full pathname of the library, or use the '-LLIBDIR'" echo "flag during linking and do at least one of the following:" if test -n "$shlibpath_var"; then echo " - add LIBDIR to the '$shlibpath_var' environment variable" echo " during execution" fi if test -n "$runpath_var"; then echo " - add LIBDIR to the '$runpath_var' environment variable" echo " during linking" fi if test -n "$hardcode_libdir_flag_spec"; then libdir=LIBDIR eval flag=\"$hardcode_libdir_flag_spec\" $ECHO " - use the '$flag' linker flag" fi if test -n "$admincmds"; then $ECHO " - have your system administrator run these commands:$admincmds" fi if test -f /etc/ld.so.conf; then echo " - have your system administrator add LIBDIR to '/etc/ld.so.conf'" fi echo echo "See any operating system documentation about shared libraries for" case $host in solaris2.[6789]|solaris2.1[0-9]) echo "more information, such as the ld(1), crle(1) and ld.so(8) manual" echo "pages." ;; *) echo "more information, such as the ld(1) and ld.so(8) manual pages." ;; esac echo "----------------------------------------------------------------------" fi exit $EXIT_SUCCESS } test finish = "$opt_mode" && func_mode_finish ${1+"$@"} # func_mode_install arg... func_mode_install () { $debug_cmd # There may be an optional sh(1) argument at the beginning of # install_prog (especially on Windows NT). if test "$SHELL" = "$nonopt" || test /bin/sh = "$nonopt" || # Allow the use of GNU shtool's install command. case $nonopt in *shtool*) :;; *) false;; esac then # Aesthetically quote it. func_quote_arg pretty "$nonopt" install_prog="$func_quote_arg_result " arg=$1 shift else install_prog= arg=$nonopt fi # The real first argument should be the name of the installation program. # Aesthetically quote it. func_quote_arg pretty "$arg" func_append install_prog "$func_quote_arg_result" install_shared_prog=$install_prog case " $install_prog " in *[\\\ /]cp\ *) install_cp=: ;; *) install_cp=false ;; esac # We need to accept at least all the BSD install flags. dest= files= opts= prev= install_type= isdir=false stripme= no_mode=: for arg do arg2= if test -n "$dest"; then func_append files " $dest" dest=$arg continue fi case $arg in -d) isdir=: ;; -f) if $install_cp; then :; else prev=$arg fi ;; -g | -m | -o) prev=$arg ;; -s) stripme=" -s" continue ;; -*) ;; *) # If the previous option needed an argument, then skip it. if test -n "$prev"; then if test X-m = "X$prev" && test -n "$install_override_mode"; then arg2=$install_override_mode no_mode=false fi prev= else dest=$arg continue fi ;; esac # Aesthetically quote the argument. func_quote_arg pretty "$arg" func_append install_prog " $func_quote_arg_result" if test -n "$arg2"; then func_quote_arg pretty "$arg2" fi func_append install_shared_prog " $func_quote_arg_result" done test -z "$install_prog" && \ func_fatal_help "you must specify an install program" test -n "$prev" && \ func_fatal_help "the '$prev' option requires an argument" if test -n "$install_override_mode" && $no_mode; then if $install_cp; then :; else func_quote_arg pretty "$install_override_mode" func_append install_shared_prog " -m $func_quote_arg_result" fi fi if test -z "$files"; then if test -z "$dest"; then func_fatal_help "no file or destination specified" else func_fatal_help "you must specify a destination" fi fi # Strip any trailing slash from the destination. func_stripname '' '/' "$dest" dest=$func_stripname_result # Check to see that the destination is a directory. test -d "$dest" && isdir=: if $isdir; then destdir=$dest destname= else func_dirname_and_basename "$dest" "" "." destdir=$func_dirname_result destname=$func_basename_result # Not a directory, so check to see that there is only one file specified. set dummy $files; shift test "$#" -gt 1 && \ func_fatal_help "'$dest' is not a directory" fi case $destdir in [\\/]* | [A-Za-z]:[\\/]*) ;; *) for file in $files; do case $file in *.lo) ;; *) func_fatal_help "'$destdir' must be an absolute directory name" ;; esac done ;; esac # This variable tells wrapper scripts just to set variables rather # than running their programs. libtool_install_magic=$magic staticlibs= future_libdirs= current_libdirs= for file in $files; do # Do each installation. case $file in *.$libext) # Do the static libraries later. func_append staticlibs " $file" ;; *.la) func_resolve_sysroot "$file" file=$func_resolve_sysroot_result # Check to see that this really is a libtool archive. func_lalib_unsafe_p "$file" \ || func_fatal_help "'$file' is not a valid libtool archive" library_names= old_library= relink_command= func_source "$file" # Add the libdir to current_libdirs if it is the destination. if test "X$destdir" = "X$libdir"; then case "$current_libdirs " in *" $libdir "*) ;; *) func_append current_libdirs " $libdir" ;; esac else # Note the libdir as a future libdir. case "$future_libdirs " in *" $libdir "*) ;; *) func_append future_libdirs " $libdir" ;; esac fi func_dirname "$file" "/" "" dir=$func_dirname_result func_append dir "$objdir" if test -n "$relink_command"; then # Determine the prefix the user has applied to our future dir. inst_prefix_dir=`$ECHO "$destdir" | $SED -e "s%$libdir\$%%"` # Don't allow the user to place us outside of our expected # location b/c this prevents finding dependent libraries that # are installed to the same prefix. # At present, this check doesn't affect windows .dll's that # are installed into $libdir/../bin (currently, that works fine) # but it's something to keep an eye on. test "$inst_prefix_dir" = "$destdir" && \ func_fatal_error "error: cannot install '$file' to a directory not ending in $libdir" if test -n "$inst_prefix_dir"; then # Stick the inst_prefix_dir data into the link command. relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"` else relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%%"` fi func_warning "relinking '$file'" func_show_eval "$relink_command" \ 'func_fatal_error "error: relink '\''$file'\'' with the above command before installing it"' fi # See the names of the shared library. set dummy $library_names; shift if test -n "$1"; then realname=$1 shift srcname=$realname test -n "$relink_command" && srcname=${realname}T # Install the shared library and build the symlinks. func_show_eval "$install_shared_prog $dir/$srcname $destdir/$realname" \ 'exit $?' tstripme=$stripme case $host_os in cygwin* | mingw* | pw32* | cegcc*) case $realname in *.dll.a) tstripme= ;; esac ;; os2*) case $realname in *_dll.a) tstripme= ;; esac ;; esac if test -n "$tstripme" && test -n "$striplib"; then func_show_eval "$striplib $destdir/$realname" 'exit $?' fi if test "$#" -gt 0; then # Delete the old symlinks, and create new ones. # Try 'ln -sf' first, because the 'ln' binary might depend on # the symlink we replace! Solaris /bin/ln does not understand -f, # so we also need to try rm && ln -s. for linkname do test "$linkname" != "$realname" \ && func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })" done fi # Do each command in the postinstall commands. lib=$destdir/$realname func_execute_cmds "$postinstall_cmds" 'exit $?' fi # Install the pseudo-library for information purposes. func_basename "$file" name=$func_basename_result instname=$dir/${name}i func_show_eval "$install_prog $instname $destdir/$name" 'exit $?' # Maybe install the static library, too. test -n "$old_library" && func_append staticlibs " $dir/$old_library" ;; *.lo) # Install (i.e. copy) a libtool object. # Figure out destination file name, if it wasn't already specified. if test -n "$destname"; then destfile=$destdir/$destname else func_basename "$file" destfile=$func_basename_result destfile=$destdir/$destfile fi # Deduce the name of the destination old-style object file. case $destfile in *.lo) func_lo2o "$destfile" staticdest=$func_lo2o_result ;; *.$objext) staticdest=$destfile destfile= ;; *) func_fatal_help "cannot copy a libtool object to '$destfile'" ;; esac # Install the libtool object if requested. test -n "$destfile" && \ func_show_eval "$install_prog $file $destfile" 'exit $?' # Install the old object if enabled. if test yes = "$build_old_libs"; then # Deduce the name of the old-style object file. func_lo2o "$file" staticobj=$func_lo2o_result func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?' fi exit $EXIT_SUCCESS ;; *) # Figure out destination file name, if it wasn't already specified. if test -n "$destname"; then destfile=$destdir/$destname else func_basename "$file" destfile=$func_basename_result destfile=$destdir/$destfile fi # If the file is missing, and there is a .exe on the end, strip it # because it is most likely a libtool script we actually want to # install stripped_ext= case $file in *.exe) if test ! -f "$file"; then func_stripname '' '.exe' "$file" file=$func_stripname_result stripped_ext=.exe fi ;; esac # Do a test to see if this is really a libtool program. case $host in *cygwin* | *mingw*) if func_ltwrapper_executable_p "$file"; then func_ltwrapper_scriptname "$file" wrapper=$func_ltwrapper_scriptname_result else func_stripname '' '.exe' "$file" wrapper=$func_stripname_result fi ;; *) wrapper=$file ;; esac if func_ltwrapper_script_p "$wrapper"; then notinst_deplibs= relink_command= func_source "$wrapper" # Check the variables that should have been set. test -z "$generated_by_libtool_version" && \ func_fatal_error "invalid libtool wrapper script '$wrapper'" finalize=: for lib in $notinst_deplibs; do # Check to see that each library is installed. libdir= if test -f "$lib"; then func_source "$lib" fi libfile=$libdir/`$ECHO "$lib" | $SED 's%^.*/%%g'` if test -n "$libdir" && test ! -f "$libfile"; then func_warning "'$lib' has not been installed in '$libdir'" finalize=false fi done relink_command= func_source "$wrapper" outputname= if test no = "$fast_install" && test -n "$relink_command"; then $opt_dry_run || { if $finalize; then tmpdir=`func_mktempdir` func_basename "$file$stripped_ext" file=$func_basename_result outputname=$tmpdir/$file # Replace the output file specification. relink_command=`$ECHO "$relink_command" | $SED 's%@OUTPUT@%'"$outputname"'%g'` $opt_quiet || { func_quote_arg expand,pretty "$relink_command" eval "func_echo $func_quote_arg_result" } if eval "$relink_command"; then : else func_error "error: relink '$file' with the above command before installing it" $opt_dry_run || ${RM}r "$tmpdir" continue fi file=$outputname else func_warning "cannot relink '$file'" fi } else # Install the binary that we compiled earlier. file=`$ECHO "$file$stripped_ext" | $SED "s%\([^/]*\)$%$objdir/\1%"` fi fi # remove .exe since cygwin /usr/bin/install will append another # one anyway case $install_prog,$host in */usr/bin/install*,*cygwin*) case $file:$destfile in *.exe:*.exe) # this is ok ;; *.exe:*) destfile=$destfile.exe ;; *:*.exe) func_stripname '' '.exe' "$destfile" destfile=$func_stripname_result ;; esac ;; esac func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?' $opt_dry_run || if test -n "$outputname"; then ${RM}r "$tmpdir" fi ;; esac done for file in $staticlibs; do func_basename "$file" name=$func_basename_result # Set up the ranlib parameters. oldlib=$destdir/$name func_to_tool_file "$oldlib" func_convert_file_msys_to_w32 tool_oldlib=$func_to_tool_file_result func_show_eval "$install_prog \$file \$oldlib" 'exit $?' if test -n "$stripme" && test -n "$old_striplib"; then func_show_eval "$old_striplib $tool_oldlib" 'exit $?' fi # Do each command in the postinstall commands. func_execute_cmds "$old_postinstall_cmds" 'exit $?' done test -n "$future_libdirs" && \ func_warning "remember to run '$progname --finish$future_libdirs'" if test -n "$current_libdirs"; then # Maybe just do a dry run. $opt_dry_run && current_libdirs=" -n$current_libdirs" exec_cmd='$SHELL "$progpath" $preserve_args --finish$current_libdirs' else exit $EXIT_SUCCESS fi } test install = "$opt_mode" && func_mode_install ${1+"$@"} # func_generate_dlsyms outputname originator pic_p # Extract symbols from dlprefiles and create ${outputname}S.o with # a dlpreopen symbol table. func_generate_dlsyms () { $debug_cmd my_outputname=$1 my_originator=$2 my_pic_p=${3-false} my_prefix=`$ECHO "$my_originator" | $SED 's%[^a-zA-Z0-9]%_%g'` my_dlsyms= if test -n "$dlfiles$dlprefiles" || test no != "$dlself"; then if test -n "$NM" && test -n "$global_symbol_pipe"; then my_dlsyms=${my_outputname}S.c else func_error "not configured to extract global symbols from dlpreopened files" fi fi if test -n "$my_dlsyms"; then case $my_dlsyms in "") ;; *.c) # Discover the nlist of each of the dlfiles. nlist=$output_objdir/$my_outputname.nm func_show_eval "$RM $nlist ${nlist}S ${nlist}T" # Parse the name list into a source file. func_verbose "creating $output_objdir/$my_dlsyms" $opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\ /* $my_dlsyms - symbol resolution table for '$my_outputname' dlsym emulation. */ /* Generated by $PROGRAM (GNU $PACKAGE) $VERSION */ #ifdef __cplusplus extern \"C\" { #endif #if defined __GNUC__ && (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4)) || (__GNUC__ > 4)) #pragma GCC diagnostic ignored \"-Wstrict-prototypes\" #endif /* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ #if defined _WIN32 || defined __CYGWIN__ || defined _WIN32_WCE /* DATA imports from DLLs on WIN32 can't be const, because runtime relocations are performed -- see ld's documentation on pseudo-relocs. */ # define LT_DLSYM_CONST #elif defined __osf__ /* This system does not cope well with relocations in const data. */ # define LT_DLSYM_CONST #else # define LT_DLSYM_CONST const #endif #define STREQ(s1, s2) (strcmp ((s1), (s2)) == 0) /* External symbol declarations for the compiler. */\ " if test yes = "$dlself"; then func_verbose "generating symbol list for '$output'" $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist" # Add our own program objects to the symbol list. progfiles=`$ECHO "$objs$old_deplibs" | $SP2NL | $SED "$lo2o" | $NL2SP` for progfile in $progfiles; do func_to_tool_file "$progfile" func_convert_file_msys_to_w32 func_verbose "extracting global C symbols from '$func_to_tool_file_result'" $opt_dry_run || eval "$NM $func_to_tool_file_result | $global_symbol_pipe >> '$nlist'" done if test -n "$exclude_expsyms"; then $opt_dry_run || { eval '$EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T' eval '$MV "$nlist"T "$nlist"' } fi if test -n "$export_symbols_regex"; then $opt_dry_run || { eval '$EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T' eval '$MV "$nlist"T "$nlist"' } fi # Prepare the list of exported symbols if test -z "$export_symbols"; then export_symbols=$output_objdir/$outputname.exp $opt_dry_run || { $RM $export_symbols eval "$SED -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"' case $host in *cygwin* | *mingw* | *cegcc* ) eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"' ;; esac } else $opt_dry_run || { eval "$SED -e 's/\([].[*^$]\)/\\\\\1/g' -e 's/^/ /' -e 's/$/$/'"' < "$export_symbols" > "$output_objdir/$outputname.exp"' eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T' eval '$MV "$nlist"T "$nlist"' case $host in *cygwin* | *mingw* | *cegcc* ) eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' eval 'cat "$nlist" >> "$output_objdir/$outputname.def"' ;; esac } fi fi for dlprefile in $dlprefiles; do func_verbose "extracting global C symbols from '$dlprefile'" func_basename "$dlprefile" name=$func_basename_result case $host in *cygwin* | *mingw* | *cegcc* ) # if an import library, we need to obtain dlname if func_win32_import_lib_p "$dlprefile"; then func_tr_sh "$dlprefile" eval "curr_lafile=\$libfile_$func_tr_sh_result" dlprefile_dlbasename= if test -n "$curr_lafile" && func_lalib_p "$curr_lafile"; then # Use subshell, to avoid clobbering current variable values dlprefile_dlname=`source "$curr_lafile" && echo "$dlname"` if test -n "$dlprefile_dlname"; then func_basename "$dlprefile_dlname" dlprefile_dlbasename=$func_basename_result else # no lafile. user explicitly requested -dlpreopen . $sharedlib_from_linklib_cmd "$dlprefile" dlprefile_dlbasename=$sharedlib_from_linklib_result fi fi $opt_dry_run || { if test -n "$dlprefile_dlbasename"; then eval '$ECHO ": $dlprefile_dlbasename" >> "$nlist"' else func_warning "Could not compute DLL name from $name" eval '$ECHO ": $name " >> "$nlist"' fi func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe | $SED -e '/I __imp/d' -e 's/I __nm_/D /;s/_nm__//' >> '$nlist'" } else # not an import lib $opt_dry_run || { eval '$ECHO ": $name " >> "$nlist"' func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'" } fi ;; *) $opt_dry_run || { eval '$ECHO ": $name " >> "$nlist"' func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'" } ;; esac done $opt_dry_run || { # Make sure we have at least an empty file. test -f "$nlist" || : > "$nlist" if test -n "$exclude_expsyms"; then $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T $MV "$nlist"T "$nlist" fi # Try sorting and uniquifying the output. if $GREP -v "^: " < "$nlist" | if sort -k 3 /dev/null 2>&1; then sort -k 3 else sort +2 fi | uniq > "$nlist"S; then : else $GREP -v "^: " < "$nlist" > "$nlist"S fi if test -f "$nlist"S; then eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"' else echo '/* NONE */' >> "$output_objdir/$my_dlsyms" fi func_show_eval '$RM "${nlist}I"' if test -n "$global_symbol_to_import"; then eval "$global_symbol_to_import"' < "$nlist"S > "$nlist"I' fi echo >> "$output_objdir/$my_dlsyms" "\ /* The mapping between symbol names and symbols. */ typedef struct { const char *name; void *address; } lt_dlsymlist; extern LT_DLSYM_CONST lt_dlsymlist lt_${my_prefix}_LTX_preloaded_symbols[];\ " if test -s "$nlist"I; then echo >> "$output_objdir/$my_dlsyms" "\ static void lt_syminit(void) { LT_DLSYM_CONST lt_dlsymlist *symbol = lt_${my_prefix}_LTX_preloaded_symbols; for (; symbol->name; ++symbol) {" $SED 's/.*/ if (STREQ (symbol->name, \"&\")) symbol->address = (void *) \&&;/' < "$nlist"I >> "$output_objdir/$my_dlsyms" echo >> "$output_objdir/$my_dlsyms" "\ } }" fi echo >> "$output_objdir/$my_dlsyms" "\ LT_DLSYM_CONST lt_dlsymlist lt_${my_prefix}_LTX_preloaded_symbols[] = { {\"$my_originator\", (void *) 0}," if test -s "$nlist"I; then echo >> "$output_objdir/$my_dlsyms" "\ {\"@INIT@\", (void *) <_syminit}," fi case $need_lib_prefix in no) eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms" ;; *) eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms" ;; esac echo >> "$output_objdir/$my_dlsyms" "\ {0, (void *) 0} }; /* This works around a problem in FreeBSD linker */ #ifdef FREEBSD_WORKAROUND static const void *lt_preloaded_setup() { return lt_${my_prefix}_LTX_preloaded_symbols; } #endif #ifdef __cplusplus } #endif\ " } # !$opt_dry_run pic_flag_for_symtable= case "$compile_command " in *" -static "*) ;; *) case $host in # compiling the symbol table file with pic_flag works around # a FreeBSD bug that causes programs to crash when -lm is # linked before any other PIC object. But we must not use # pic_flag when linking with -static. The problem exists in # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1. *-*-freebsd2.*|*-*-freebsd3.0*|*-*-freebsdelf3.0*) pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;; *-*-hpux*) pic_flag_for_symtable=" $pic_flag" ;; *) $my_pic_p && pic_flag_for_symtable=" $pic_flag" ;; esac ;; esac symtab_cflags= for arg in $LTCFLAGS; do case $arg in -pie | -fpie | -fPIE) ;; *) func_append symtab_cflags " $arg" ;; esac done # Now compile the dynamic symbol file. func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?' # Clean up the generated files. func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T" "${nlist}I"' # Transform the symbol file into the correct name. symfileobj=$output_objdir/${my_outputname}S.$objext case $host in *cygwin* | *mingw* | *cegcc* ) if test -f "$output_objdir/$my_outputname.def"; then compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` else compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"` finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"` fi ;; *) compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"` finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"` ;; esac ;; *) func_fatal_error "unknown suffix for '$my_dlsyms'" ;; esac else # We keep going just in case the user didn't refer to # lt_preloaded_symbols. The linker will fail if global_symbol_pipe # really was required. # Nullify the symbol file. compile_command=`$ECHO "$compile_command" | $SED "s% @SYMFILE@%%"` finalize_command=`$ECHO "$finalize_command" | $SED "s% @SYMFILE@%%"` fi } # func_cygming_gnu_implib_p ARG # This predicate returns with zero status (TRUE) if # ARG is a GNU/binutils-style import library. Returns # with nonzero status (FALSE) otherwise. func_cygming_gnu_implib_p () { $debug_cmd func_to_tool_file "$1" func_convert_file_msys_to_w32 func_cygming_gnu_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $EGREP ' (_head_[A-Za-z0-9_]+_[ad]l*|[A-Za-z0-9_]+_[ad]l*_iname)$'` test -n "$func_cygming_gnu_implib_tmp" } # func_cygming_ms_implib_p ARG # This predicate returns with zero status (TRUE) if # ARG is an MS-style import library. Returns # with nonzero status (FALSE) otherwise. func_cygming_ms_implib_p () { $debug_cmd func_to_tool_file "$1" func_convert_file_msys_to_w32 func_cygming_ms_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $GREP '_NULL_IMPORT_DESCRIPTOR'` test -n "$func_cygming_ms_implib_tmp" } # func_win32_libid arg # return the library type of file 'arg' # # Need a lot of goo to handle *both* DLLs and import libs # Has to be a shell function in order to 'eat' the argument # that is supplied when $file_magic_command is called. # Despite the name, also deal with 64 bit binaries. func_win32_libid () { $debug_cmd win32_libid_type=unknown win32_fileres=`file -L $1 2>/dev/null` case $win32_fileres in *ar\ archive\ import\ library*) # definitely import win32_libid_type="x86 archive import" ;; *ar\ archive*) # could be an import, or static # Keep the egrep pattern in sync with the one in _LT_CHECK_MAGIC_METHOD. if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null | $EGREP 'file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' >/dev/null; then case $nm_interface in "MS dumpbin") if func_cygming_ms_implib_p "$1" || func_cygming_gnu_implib_p "$1" then win32_nmres=import else win32_nmres= fi ;; *) func_to_tool_file "$1" func_convert_file_msys_to_w32 win32_nmres=`eval $NM -f posix -A \"$func_to_tool_file_result\" | $SED -n -e ' 1,100{ / I /{ s|.*|import| p q } }'` ;; esac case $win32_nmres in import*) win32_libid_type="x86 archive import";; *) win32_libid_type="x86 archive static";; esac fi ;; *DLL*) win32_libid_type="x86 DLL" ;; *executable*) # but shell scripts are "executable" too... case $win32_fileres in *MS\ Windows\ PE\ Intel*) win32_libid_type="x86 DLL" ;; esac ;; esac $ECHO "$win32_libid_type" } # func_cygming_dll_for_implib ARG # # Platform-specific function to extract the # name of the DLL associated with the specified # import library ARG. # Invoked by eval'ing the libtool variable # $sharedlib_from_linklib_cmd # Result is available in the variable # $sharedlib_from_linklib_result func_cygming_dll_for_implib () { $debug_cmd sharedlib_from_linklib_result=`$DLLTOOL --identify-strict --identify "$1"` } # func_cygming_dll_for_implib_fallback_core SECTION_NAME LIBNAMEs # # The is the core of a fallback implementation of a # platform-specific function to extract the name of the # DLL associated with the specified import library LIBNAME. # # SECTION_NAME is either .idata$6 or .idata$7, depending # on the platform and compiler that created the implib. # # Echos the name of the DLL associated with the # specified import library. func_cygming_dll_for_implib_fallback_core () { $debug_cmd match_literal=`$ECHO "$1" | $SED "$sed_make_literal_regex"` $OBJDUMP -s --section "$1" "$2" 2>/dev/null | $SED '/^Contents of section '"$match_literal"':/{ # Place marker at beginning of archive member dllname section s/.*/====MARK====/ p d } # These lines can sometimes be longer than 43 characters, but # are always uninteresting /:[ ]*file format pe[i]\{,1\}-/d /^In archive [^:]*:/d # Ensure marker is printed /^====MARK====/p # Remove all lines with less than 43 characters /^.\{43\}/!d # From remaining lines, remove first 43 characters s/^.\{43\}//' | $SED -n ' # Join marker and all lines until next marker into a single line /^====MARK====/ b para H $ b para b :para x s/\n//g # Remove the marker s/^====MARK====// # Remove trailing dots and whitespace s/[\. \t]*$// # Print /./p' | # we now have a list, one entry per line, of the stringified # contents of the appropriate section of all members of the # archive that possess that section. Heuristic: eliminate # all those that have a first or second character that is # a '.' (that is, objdump's representation of an unprintable # character.) This should work for all archives with less than # 0x302f exports -- but will fail for DLLs whose name actually # begins with a literal '.' or a single character followed by # a '.'. # # Of those that remain, print the first one. $SED -e '/^\./d;/^.\./d;q' } # func_cygming_dll_for_implib_fallback ARG # Platform-specific function to extract the # name of the DLL associated with the specified # import library ARG. # # This fallback implementation is for use when $DLLTOOL # does not support the --identify-strict option. # Invoked by eval'ing the libtool variable # $sharedlib_from_linklib_cmd # Result is available in the variable # $sharedlib_from_linklib_result func_cygming_dll_for_implib_fallback () { $debug_cmd if func_cygming_gnu_implib_p "$1"; then # binutils import library sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$7' "$1"` elif func_cygming_ms_implib_p "$1"; then # ms-generated import library sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$6' "$1"` else # unknown sharedlib_from_linklib_result= fi } # func_extract_an_archive dir oldlib func_extract_an_archive () { $debug_cmd f_ex_an_ar_dir=$1; shift f_ex_an_ar_oldlib=$1 if test yes = "$lock_old_archive_extraction"; then lockfile=$f_ex_an_ar_oldlib.lock until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do func_echo "Waiting for $lockfile to be removed" sleep 2 done fi func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" \ 'stat=$?; rm -f "$lockfile"; exit $stat' if test yes = "$lock_old_archive_extraction"; then $opt_dry_run || rm -f "$lockfile" fi if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then : else func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib" fi } # func_extract_archives gentop oldlib ... func_extract_archives () { $debug_cmd my_gentop=$1; shift my_oldlibs=${1+"$@"} my_oldobjs= my_xlib= my_xabs= my_xdir= for my_xlib in $my_oldlibs; do # Extract the objects. case $my_xlib in [\\/]* | [A-Za-z]:[\\/]*) my_xabs=$my_xlib ;; *) my_xabs=`pwd`"/$my_xlib" ;; esac func_basename "$my_xlib" my_xlib=$func_basename_result my_xlib_u=$my_xlib while :; do case " $extracted_archives " in *" $my_xlib_u "*) func_arith $extracted_serial + 1 extracted_serial=$func_arith_result my_xlib_u=lt$extracted_serial-$my_xlib ;; *) break ;; esac done extracted_archives="$extracted_archives $my_xlib_u" my_xdir=$my_gentop/$my_xlib_u func_mkdir_p "$my_xdir" case $host in *-darwin*) func_verbose "Extracting $my_xabs" # Do not bother doing anything if just a dry run $opt_dry_run || { darwin_orig_dir=`pwd` cd $my_xdir || exit $? darwin_archive=$my_xabs darwin_curdir=`pwd` func_basename "$darwin_archive" darwin_base_archive=$func_basename_result darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true` if test -n "$darwin_arches"; then darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'` darwin_arch= func_verbose "$darwin_base_archive has multiple architectures $darwin_arches" for darwin_arch in $darwin_arches; do func_mkdir_p "unfat-$$/$darwin_base_archive-$darwin_arch" $LIPO -thin $darwin_arch -output "unfat-$$/$darwin_base_archive-$darwin_arch/$darwin_base_archive" "$darwin_archive" cd "unfat-$$/$darwin_base_archive-$darwin_arch" func_extract_an_archive "`pwd`" "$darwin_base_archive" cd "$darwin_curdir" $RM "unfat-$$/$darwin_base_archive-$darwin_arch/$darwin_base_archive" done # $darwin_arches ## Okay now we've a bunch of thin objects, gotta fatten them up :) darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$sed_basename" | sort -u` darwin_file= darwin_files= for darwin_file in $darwin_filelist; do darwin_files=`find unfat-$$ -name $darwin_file -print | sort | $NL2SP` $LIPO -create -output "$darwin_file" $darwin_files done # $darwin_filelist $RM -rf unfat-$$ cd "$darwin_orig_dir" else cd $darwin_orig_dir func_extract_an_archive "$my_xdir" "$my_xabs" fi # $darwin_arches } # !$opt_dry_run ;; *) func_extract_an_archive "$my_xdir" "$my_xabs" ;; esac my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | sort | $NL2SP` done func_extract_archives_result=$my_oldobjs } # func_emit_wrapper [arg=no] # # Emit a libtool wrapper script on stdout. # Don't directly open a file because we may want to # incorporate the script contents within a cygwin/mingw # wrapper executable. Must ONLY be called from within # func_mode_link because it depends on a number of variables # set therein. # # ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR # variable will take. If 'yes', then the emitted script # will assume that the directory where it is stored is # the $objdir directory. This is a cygwin/mingw-specific # behavior. func_emit_wrapper () { func_emit_wrapper_arg1=${1-no} $ECHO "\ #! $SHELL # $output - temporary wrapper script for $objdir/$outputname # Generated by $PROGRAM (GNU $PACKAGE) $VERSION # # The $output program cannot be directly executed until all the libtool # libraries that it depends on are installed. # # This wrapper script should never be moved out of the build directory. # If it is, it will not operate correctly. # Sed substitution that helps us do robust quoting. It backslashifies # metacharacters that are still active within double-quoted strings. sed_quote_subst='$sed_quote_subst' # Be Bourne compatible if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then emulate sh NULLCMD=: # Zsh 3.x and 4.x performs word splitting on \${1+\"\$@\"}, which # is contrary to our usage. Disable this feature. alias -g '\${1+\"\$@\"}'='\"\$@\"' setopt NO_GLOB_SUBST else case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac fi BIN_SH=xpg4; export BIN_SH # for Tru64 DUALCASE=1; export DUALCASE # for MKS sh # The HP-UX ksh and POSIX shell print the target directory to stdout # if CDPATH is set. (unset CDPATH) >/dev/null 2>&1 && unset CDPATH relink_command=\"$relink_command\" # This environment variable determines our operation mode. if test \"\$libtool_install_magic\" = \"$magic\"; then # install mode needs the following variables: generated_by_libtool_version='$macro_version' notinst_deplibs='$notinst_deplibs' else # When we are sourced in execute mode, \$file and \$ECHO are already set. if test \"\$libtool_execute_magic\" != \"$magic\"; then file=\"\$0\"" func_quote_arg pretty "$ECHO" qECHO=$func_quote_arg_result $ECHO "\ # A function that is used when there is no print builtin or printf. func_fallback_echo () { eval 'cat <<_LTECHO_EOF \$1 _LTECHO_EOF' } ECHO=$qECHO fi # Very basic option parsing. These options are (a) specific to # the libtool wrapper, (b) are identical between the wrapper # /script/ and the wrapper /executable/ that is used only on # windows platforms, and (c) all begin with the string "--lt-" # (application programs are unlikely to have options that match # this pattern). # # There are only two supported options: --lt-debug and # --lt-dump-script. There is, deliberately, no --lt-help. # # The first argument to this parsing function should be the # script's $0 value, followed by "$@". lt_option_debug= func_parse_lt_options () { lt_script_arg0=\$0 shift for lt_opt do case \"\$lt_opt\" in --lt-debug) lt_option_debug=1 ;; --lt-dump-script) lt_dump_D=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%/[^/]*$%%'\` test \"X\$lt_dump_D\" = \"X\$lt_script_arg0\" && lt_dump_D=. lt_dump_F=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%^.*/%%'\` cat \"\$lt_dump_D/\$lt_dump_F\" exit 0 ;; --lt-*) \$ECHO \"Unrecognized --lt- option: '\$lt_opt'\" 1>&2 exit 1 ;; esac done # Print the debug banner immediately: if test -n \"\$lt_option_debug\"; then echo \"$outputname:$output:\$LINENO: libtool wrapper (GNU $PACKAGE) $VERSION\" 1>&2 fi } # Used when --lt-debug. Prints its arguments to stdout # (redirection is the responsibility of the caller) func_lt_dump_args () { lt_dump_args_N=1; for lt_arg do \$ECHO \"$outputname:$output:\$LINENO: newargv[\$lt_dump_args_N]: \$lt_arg\" lt_dump_args_N=\`expr \$lt_dump_args_N + 1\` done } # Core function for launching the target application func_exec_program_core () { " case $host in # Backslashes separate directories on plain windows *-*-mingw | *-*-os2* | *-cegcc*) $ECHO "\ if test -n \"\$lt_option_debug\"; then \$ECHO \"$outputname:$output:\$LINENO: newargv[0]: \$progdir\\\\\$program\" 1>&2 func_lt_dump_args \${1+\"\$@\"} 1>&2 fi exec \"\$progdir\\\\\$program\" \${1+\"\$@\"} " ;; *) $ECHO "\ if test -n \"\$lt_option_debug\"; then \$ECHO \"$outputname:$output:\$LINENO: newargv[0]: \$progdir/\$program\" 1>&2 func_lt_dump_args \${1+\"\$@\"} 1>&2 fi exec \"\$progdir/\$program\" \${1+\"\$@\"} " ;; esac $ECHO "\ \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2 exit 1 } # A function to encapsulate launching the target application # Strips options in the --lt-* namespace from \$@ and # launches target application with the remaining arguments. func_exec_program () { case \" \$* \" in *\\ --lt-*) for lt_wr_arg do case \$lt_wr_arg in --lt-*) ;; *) set x \"\$@\" \"\$lt_wr_arg\"; shift;; esac shift done ;; esac func_exec_program_core \${1+\"\$@\"} } # Parse options func_parse_lt_options \"\$0\" \${1+\"\$@\"} # Find the directory that this script lives in. thisdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*$%%'\` test \"x\$thisdir\" = \"x\$file\" && thisdir=. # Follow symbolic links until we get to the real thisdir. file=\`ls -ld \"\$file\" | $SED -n 's/.*-> //p'\` while test -n \"\$file\"; do destdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*\$%%'\` # If there was a directory component, then change thisdir. if test \"x\$destdir\" != \"x\$file\"; then case \"\$destdir\" in [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;; *) thisdir=\"\$thisdir/\$destdir\" ;; esac fi file=\`\$ECHO \"\$file\" | $SED 's%^.*/%%'\` file=\`ls -ld \"\$thisdir/\$file\" | $SED -n 's/.*-> //p'\` done # Usually 'no', except on cygwin/mingw when embedded into # the cwrapper. WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_arg1 if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then # special case for '.' if test \"\$thisdir\" = \".\"; then thisdir=\`pwd\` fi # remove .libs from thisdir case \"\$thisdir\" in *[\\\\/]$objdir ) thisdir=\`\$ECHO \"\$thisdir\" | $SED 's%[\\\\/][^\\\\/]*$%%'\` ;; $objdir ) thisdir=. ;; esac fi # Try to get the absolute directory name. absdir=\`cd \"\$thisdir\" && pwd\` test -n \"\$absdir\" && thisdir=\"\$absdir\" " if test yes = "$fast_install"; then $ECHO "\ program=lt-'$outputname'$exeext progdir=\"\$thisdir/$objdir\" if test ! -f \"\$progdir/\$program\" || { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | $SED 1q\`; \\ test \"X\$file\" != \"X\$progdir/\$program\"; }; then file=\"\$\$-\$program\" if test ! -d \"\$progdir\"; then $MKDIR \"\$progdir\" else $RM \"\$progdir/\$file\" fi" $ECHO "\ # relink executable if necessary if test -n \"\$relink_command\"; then if relink_command_output=\`eval \$relink_command 2>&1\`; then : else \$ECHO \"\$relink_command_output\" >&2 $RM \"\$progdir/\$file\" exit 1 fi fi $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null || { $RM \"\$progdir/\$program\"; $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; } $RM \"\$progdir/\$file\" fi" else $ECHO "\ program='$outputname' progdir=\"\$thisdir/$objdir\" " fi $ECHO "\ if test -f \"\$progdir/\$program\"; then" # fixup the dll searchpath if we need to. # # Fix the DLL searchpath if we need to. Do this before prepending # to shlibpath, because on Windows, both are PATH and uninstalled # libraries must come first. if test -n "$dllsearchpath"; then $ECHO "\ # Add the dll search path components to the executable PATH PATH=$dllsearchpath:\$PATH " fi # Export our shlibpath_var if we have one. if test yes = "$shlibpath_overrides_runpath" && test -n "$shlibpath_var" && test -n "$temp_rpath"; then $ECHO "\ # Add our own library path to $shlibpath_var $shlibpath_var=\"$temp_rpath\$$shlibpath_var\" # Some systems cannot cope with colon-terminated $shlibpath_var # The second colon is a workaround for a bug in BeOS R4 sed $shlibpath_var=\`\$ECHO \"\$$shlibpath_var\" | $SED 's/::*\$//'\` export $shlibpath_var " fi $ECHO "\ if test \"\$libtool_execute_magic\" != \"$magic\"; then # Run the actual program with our arguments. func_exec_program \${1+\"\$@\"} fi else # The program doesn't exist. \$ECHO \"\$0: error: '\$progdir/\$program' does not exist\" 1>&2 \$ECHO \"This script is just a wrapper for \$program.\" 1>&2 \$ECHO \"See the $PACKAGE documentation for more information.\" 1>&2 exit 1 fi fi\ " } # func_emit_cwrapperexe_src # emit the source code for a wrapper executable on stdout # Must ONLY be called from within func_mode_link because # it depends on a number of variable set therein. func_emit_cwrapperexe_src () { cat < #include #ifdef _MSC_VER # include # include # include #else # include # include # ifdef __CYGWIN__ # include # endif #endif #include #include #include #include #include #include #include #include #define STREQ(s1, s2) (strcmp ((s1), (s2)) == 0) /* declarations of non-ANSI functions */ #if defined __MINGW32__ # ifdef __STRICT_ANSI__ int _putenv (const char *); # endif #elif defined __CYGWIN__ # ifdef __STRICT_ANSI__ char *realpath (const char *, char *); int putenv (char *); int setenv (const char *, const char *, int); # endif /* #elif defined other_platform || defined ... */ #endif /* portability defines, excluding path handling macros */ #if defined _MSC_VER # define setmode _setmode # define stat _stat # define chmod _chmod # define getcwd _getcwd # define putenv _putenv # define S_IXUSR _S_IEXEC #elif defined __MINGW32__ # define setmode _setmode # define stat _stat # define chmod _chmod # define getcwd _getcwd # define putenv _putenv #elif defined __CYGWIN__ # define HAVE_SETENV # define FOPEN_WB "wb" /* #elif defined other platforms ... */ #endif #if defined PATH_MAX # define LT_PATHMAX PATH_MAX #elif defined MAXPATHLEN # define LT_PATHMAX MAXPATHLEN #else # define LT_PATHMAX 1024 #endif #ifndef S_IXOTH # define S_IXOTH 0 #endif #ifndef S_IXGRP # define S_IXGRP 0 #endif /* path handling portability macros */ #ifndef DIR_SEPARATOR # define DIR_SEPARATOR '/' # define PATH_SEPARATOR ':' #endif #if defined _WIN32 || defined __MSDOS__ || defined __DJGPP__ || \ defined __OS2__ # define HAVE_DOS_BASED_FILE_SYSTEM # define FOPEN_WB "wb" # ifndef DIR_SEPARATOR_2 # define DIR_SEPARATOR_2 '\\' # endif # ifndef PATH_SEPARATOR_2 # define PATH_SEPARATOR_2 ';' # endif #endif #ifndef DIR_SEPARATOR_2 # define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR) #else /* DIR_SEPARATOR_2 */ # define IS_DIR_SEPARATOR(ch) \ (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2)) #endif /* DIR_SEPARATOR_2 */ #ifndef PATH_SEPARATOR_2 # define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR) #else /* PATH_SEPARATOR_2 */ # define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2) #endif /* PATH_SEPARATOR_2 */ #ifndef FOPEN_WB # define FOPEN_WB "w" #endif #ifndef _O_BINARY # define _O_BINARY 0 #endif #define XMALLOC(type, num) ((type *) xmalloc ((num) * sizeof(type))) #define XFREE(stale) do { \ if (stale) { free (stale); stale = 0; } \ } while (0) #if defined LT_DEBUGWRAPPER static int lt_debug = 1; #else static int lt_debug = 0; #endif const char *program_name = "libtool-wrapper"; /* in case xstrdup fails */ void *xmalloc (size_t num); char *xstrdup (const char *string); const char *base_name (const char *name); char *find_executable (const char *wrapper); char *chase_symlinks (const char *pathspec); int make_executable (const char *path); int check_executable (const char *path); char *strendzap (char *str, const char *pat); void lt_debugprintf (const char *file, int line, const char *fmt, ...); void lt_fatal (const char *file, int line, const char *message, ...); static const char *nonnull (const char *s); static const char *nonempty (const char *s); void lt_setenv (const char *name, const char *value); char *lt_extend_str (const char *orig_value, const char *add, int to_end); void lt_update_exe_path (const char *name, const char *value); void lt_update_lib_path (const char *name, const char *value); char **prepare_spawn (char **argv); void lt_dump_script (FILE *f); EOF cat <= 0) && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))) return 1; else return 0; } int make_executable (const char *path) { int rval = 0; struct stat st; lt_debugprintf (__FILE__, __LINE__, "(make_executable): %s\n", nonempty (path)); if ((!path) || (!*path)) return 0; if (stat (path, &st) >= 0) { rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR); } return rval; } /* Searches for the full path of the wrapper. Returns newly allocated full path name if found, NULL otherwise Does not chase symlinks, even on platforms that support them. */ char * find_executable (const char *wrapper) { int has_slash = 0; const char *p; const char *p_next; /* static buffer for getcwd */ char tmp[LT_PATHMAX + 1]; size_t tmp_len; char *concat_name; lt_debugprintf (__FILE__, __LINE__, "(find_executable): %s\n", nonempty (wrapper)); if ((wrapper == NULL) || (*wrapper == '\0')) return NULL; /* Absolute path? */ #if defined HAVE_DOS_BASED_FILE_SYSTEM if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':') { concat_name = xstrdup (wrapper); if (check_executable (concat_name)) return concat_name; XFREE (concat_name); } else { #endif if (IS_DIR_SEPARATOR (wrapper[0])) { concat_name = xstrdup (wrapper); if (check_executable (concat_name)) return concat_name; XFREE (concat_name); } #if defined HAVE_DOS_BASED_FILE_SYSTEM } #endif for (p = wrapper; *p; p++) if (*p == '/') { has_slash = 1; break; } if (!has_slash) { /* no slashes; search PATH */ const char *path = getenv ("PATH"); if (path != NULL) { for (p = path; *p; p = p_next) { const char *q; size_t p_len; for (q = p; *q; q++) if (IS_PATH_SEPARATOR (*q)) break; p_len = (size_t) (q - p); p_next = (*q == '\0' ? q : q + 1); if (p_len == 0) { /* empty path: current directory */ if (getcwd (tmp, LT_PATHMAX) == NULL) lt_fatal (__FILE__, __LINE__, "getcwd failed: %s", nonnull (strerror (errno))); tmp_len = strlen (tmp); concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); memcpy (concat_name, tmp, tmp_len); concat_name[tmp_len] = '/'; strcpy (concat_name + tmp_len + 1, wrapper); } else { concat_name = XMALLOC (char, p_len + 1 + strlen (wrapper) + 1); memcpy (concat_name, p, p_len); concat_name[p_len] = '/'; strcpy (concat_name + p_len + 1, wrapper); } if (check_executable (concat_name)) return concat_name; XFREE (concat_name); } } /* not found in PATH; assume curdir */ } /* Relative path | not found in path: prepend cwd */ if (getcwd (tmp, LT_PATHMAX) == NULL) lt_fatal (__FILE__, __LINE__, "getcwd failed: %s", nonnull (strerror (errno))); tmp_len = strlen (tmp); concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); memcpy (concat_name, tmp, tmp_len); concat_name[tmp_len] = '/'; strcpy (concat_name + tmp_len + 1, wrapper); if (check_executable (concat_name)) return concat_name; XFREE (concat_name); return NULL; } char * chase_symlinks (const char *pathspec) { #ifndef S_ISLNK return xstrdup (pathspec); #else char buf[LT_PATHMAX]; struct stat s; char *tmp_pathspec = xstrdup (pathspec); char *p; int has_symlinks = 0; while (strlen (tmp_pathspec) && !has_symlinks) { lt_debugprintf (__FILE__, __LINE__, "checking path component for symlinks: %s\n", tmp_pathspec); if (lstat (tmp_pathspec, &s) == 0) { if (S_ISLNK (s.st_mode) != 0) { has_symlinks = 1; break; } /* search backwards for last DIR_SEPARATOR */ p = tmp_pathspec + strlen (tmp_pathspec) - 1; while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) p--; if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) { /* no more DIR_SEPARATORS left */ break; } *p = '\0'; } else { lt_fatal (__FILE__, __LINE__, "error accessing file \"%s\": %s", tmp_pathspec, nonnull (strerror (errno))); } } XFREE (tmp_pathspec); if (!has_symlinks) { return xstrdup (pathspec); } tmp_pathspec = realpath (pathspec, buf); if (tmp_pathspec == 0) { lt_fatal (__FILE__, __LINE__, "could not follow symlinks for %s", pathspec); } return xstrdup (tmp_pathspec); #endif } char * strendzap (char *str, const char *pat) { size_t len, patlen; assert (str != NULL); assert (pat != NULL); len = strlen (str); patlen = strlen (pat); if (patlen <= len) { str += len - patlen; if (STREQ (str, pat)) *str = '\0'; } return str; } void lt_debugprintf (const char *file, int line, const char *fmt, ...) { va_list args; if (lt_debug) { (void) fprintf (stderr, "%s:%s:%d: ", program_name, file, line); va_start (args, fmt); (void) vfprintf (stderr, fmt, args); va_end (args); } } static void lt_error_core (int exit_status, const char *file, int line, const char *mode, const char *message, va_list ap) { fprintf (stderr, "%s:%s:%d: %s: ", program_name, file, line, mode); vfprintf (stderr, message, ap); fprintf (stderr, ".\n"); if (exit_status >= 0) exit (exit_status); } void lt_fatal (const char *file, int line, const char *message, ...) { va_list ap; va_start (ap, message); lt_error_core (EXIT_FAILURE, file, line, "FATAL", message, ap); va_end (ap); } static const char * nonnull (const char *s) { return s ? s : "(null)"; } static const char * nonempty (const char *s) { return (s && !*s) ? "(empty)" : nonnull (s); } void lt_setenv (const char *name, const char *value) { lt_debugprintf (__FILE__, __LINE__, "(lt_setenv) setting '%s' to '%s'\n", nonnull (name), nonnull (value)); { #ifdef HAVE_SETENV /* always make a copy, for consistency with !HAVE_SETENV */ char *str = xstrdup (value); setenv (name, str, 1); #else size_t len = strlen (name) + 1 + strlen (value) + 1; char *str = XMALLOC (char, len); sprintf (str, "%s=%s", name, value); if (putenv (str) != EXIT_SUCCESS) { XFREE (str); } #endif } } char * lt_extend_str (const char *orig_value, const char *add, int to_end) { char *new_value; if (orig_value && *orig_value) { size_t orig_value_len = strlen (orig_value); size_t add_len = strlen (add); new_value = XMALLOC (char, add_len + orig_value_len + 1); if (to_end) { strcpy (new_value, orig_value); strcpy (new_value + orig_value_len, add); } else { strcpy (new_value, add); strcpy (new_value + add_len, orig_value); } } else { new_value = xstrdup (add); } return new_value; } void lt_update_exe_path (const char *name, const char *value) { lt_debugprintf (__FILE__, __LINE__, "(lt_update_exe_path) modifying '%s' by prepending '%s'\n", nonnull (name), nonnull (value)); if (name && *name && value && *value) { char *new_value = lt_extend_str (getenv (name), value, 0); /* some systems can't cope with a ':'-terminated path #' */ size_t len = strlen (new_value); while ((len > 0) && IS_PATH_SEPARATOR (new_value[len-1])) { new_value[--len] = '\0'; } lt_setenv (name, new_value); XFREE (new_value); } } void lt_update_lib_path (const char *name, const char *value) { lt_debugprintf (__FILE__, __LINE__, "(lt_update_lib_path) modifying '%s' by prepending '%s'\n", nonnull (name), nonnull (value)); if (name && *name && value && *value) { char *new_value = lt_extend_str (getenv (name), value, 0); lt_setenv (name, new_value); XFREE (new_value); } } EOF case $host_os in mingw*) cat <<"EOF" /* Prepares an argument vector before calling spawn(). Note that spawn() does not by itself call the command interpreter (getenv ("COMSPEC") != NULL ? getenv ("COMSPEC") : ({ OSVERSIONINFO v; v.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); GetVersionEx(&v); v.dwPlatformId == VER_PLATFORM_WIN32_NT; }) ? "cmd.exe" : "command.com"). Instead it simply concatenates the arguments, separated by ' ', and calls CreateProcess(). We must quote the arguments since Win32 CreateProcess() interprets characters like ' ', '\t', '\\', '"' (but not '<' and '>') in a special way: - Space and tab are interpreted as delimiters. They are not treated as delimiters if they are surrounded by double quotes: "...". - Unescaped double quotes are removed from the input. Their only effect is that within double quotes, space and tab are treated like normal characters. - Backslashes not followed by double quotes are not special. - But 2*n+1 backslashes followed by a double quote become n backslashes followed by a double quote (n >= 0): \" -> " \\\" -> \" \\\\\" -> \\" */ #define SHELL_SPECIAL_CHARS "\"\\ \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037" #define SHELL_SPACE_CHARS " \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037" char ** prepare_spawn (char **argv) { size_t argc; char **new_argv; size_t i; /* Count number of arguments. */ for (argc = 0; argv[argc] != NULL; argc++) ; /* Allocate new argument vector. */ new_argv = XMALLOC (char *, argc + 1); /* Put quoted arguments into the new argument vector. */ for (i = 0; i < argc; i++) { const char *string = argv[i]; if (string[0] == '\0') new_argv[i] = xstrdup ("\"\""); else if (strpbrk (string, SHELL_SPECIAL_CHARS) != NULL) { int quote_around = (strpbrk (string, SHELL_SPACE_CHARS) != NULL); size_t length; unsigned int backslashes; const char *s; char *quoted_string; char *p; length = 0; backslashes = 0; if (quote_around) length++; for (s = string; *s != '\0'; s++) { char c = *s; if (c == '"') length += backslashes + 1; length++; if (c == '\\') backslashes++; else backslashes = 0; } if (quote_around) length += backslashes + 1; quoted_string = XMALLOC (char, length + 1); p = quoted_string; backslashes = 0; if (quote_around) *p++ = '"'; for (s = string; *s != '\0'; s++) { char c = *s; if (c == '"') { unsigned int j; for (j = backslashes + 1; j > 0; j--) *p++ = '\\'; } *p++ = c; if (c == '\\') backslashes++; else backslashes = 0; } if (quote_around) { unsigned int j; for (j = backslashes; j > 0; j--) *p++ = '\\'; *p++ = '"'; } *p = '\0'; new_argv[i] = quoted_string; } else new_argv[i] = (char *) string; } new_argv[argc] = NULL; return new_argv; } EOF ;; esac cat <<"EOF" void lt_dump_script (FILE* f) { EOF func_emit_wrapper yes | $SED -n -e ' s/^\(.\{79\}\)\(..*\)/\1\ \2/ h s/\([\\"]\)/\\\1/g s/$/\\n/ s/\([^\n]*\).*/ fputs ("\1", f);/p g D' cat <<"EOF" } EOF } # end: func_emit_cwrapperexe_src # func_win32_import_lib_p ARG # True if ARG is an import lib, as indicated by $file_magic_cmd func_win32_import_lib_p () { $debug_cmd case `eval $file_magic_cmd \"\$1\" 2>/dev/null | $SED -e 10q` in *import*) : ;; *) false ;; esac } # func_suncc_cstd_abi # !!ONLY CALL THIS FOR SUN CC AFTER $compile_command IS FULLY EXPANDED!! # Several compiler flags select an ABI that is incompatible with the # Cstd library. Avoid specifying it if any are in CXXFLAGS. func_suncc_cstd_abi () { $debug_cmd case " $compile_command " in *" -compat=g "*|*\ -std=c++[0-9][0-9]\ *|*" -library=stdcxx4 "*|*" -library=stlport4 "*) suncc_use_cstd_abi=no ;; *) suncc_use_cstd_abi=yes ;; esac } # func_mode_link arg... func_mode_link () { $debug_cmd case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) # It is impossible to link a dll without this setting, and # we shouldn't force the makefile maintainer to figure out # what system we are compiling for in order to pass an extra # flag for every libtool invocation. # allow_undefined=no # FIXME: Unfortunately, there are problems with the above when trying # to make a dll that has undefined symbols, in which case not # even a static library is built. For now, we need to specify # -no-undefined on the libtool link line when we can be certain # that all symbols are satisfied, otherwise we get a static library. allow_undefined=yes ;; *) allow_undefined=yes ;; esac libtool_args=$nonopt base_compile="$nonopt $@" compile_command=$nonopt finalize_command=$nonopt compile_rpath= finalize_rpath= compile_shlibpath= finalize_shlibpath= convenience= old_convenience= deplibs= old_deplibs= compiler_flags= linker_flags= dllsearchpath= lib_search_path=`pwd` inst_prefix_dir= new_inherited_linker_flags= avoid_version=no bindir= dlfiles= dlprefiles= dlself=no export_dynamic=no export_symbols= export_symbols_regex= generated= libobjs= ltlibs= module=no no_install=no objs= os2dllname= non_pic_objects= precious_files_regex= prefer_static_libs=no preload=false prev= prevarg= release= rpath= xrpath= perm_rpath= temp_rpath= thread_safe=no vinfo= vinfo_number=no weak_libs= single_module=$wl-single_module func_infer_tag $base_compile # We need to know -static, to get the right output filenames. for arg do case $arg in -shared) test yes != "$build_libtool_libs" \ && func_fatal_configuration "cannot build a shared library" build_old_libs=no break ;; -all-static | -static | -static-libtool-libs) case $arg in -all-static) if test yes = "$build_libtool_libs" && test -z "$link_static_flag"; then func_warning "complete static linking is impossible in this configuration" fi if test -n "$link_static_flag"; then dlopen_self=$dlopen_self_static fi prefer_static_libs=yes ;; -static) if test -z "$pic_flag" && test -n "$link_static_flag"; then dlopen_self=$dlopen_self_static fi prefer_static_libs=built ;; -static-libtool-libs) if test -z "$pic_flag" && test -n "$link_static_flag"; then dlopen_self=$dlopen_self_static fi prefer_static_libs=yes ;; esac build_libtool_libs=no build_old_libs=yes break ;; esac done # See if our shared archives depend on static archives. test -n "$old_archive_from_new_cmds" && build_old_libs=yes # Go through the arguments, transforming them on the way. while test "$#" -gt 0; do arg=$1 shift func_quote_arg pretty,unquoted "$arg" qarg=$func_quote_arg_unquoted_result func_append libtool_args " $func_quote_arg_result" # If the previous option needs an argument, assign it. if test -n "$prev"; then case $prev in output) func_append compile_command " @OUTPUT@" func_append finalize_command " @OUTPUT@" ;; esac case $prev in bindir) bindir=$arg prev= continue ;; dlfiles|dlprefiles) $preload || { # Add the symbol object into the linking commands. func_append compile_command " @SYMFILE@" func_append finalize_command " @SYMFILE@" preload=: } case $arg in *.la | *.lo) ;; # We handle these cases below. force) if test no = "$dlself"; then dlself=needless export_dynamic=yes fi prev= continue ;; self) if test dlprefiles = "$prev"; then dlself=yes elif test dlfiles = "$prev" && test yes != "$dlopen_self"; then dlself=yes else dlself=needless export_dynamic=yes fi prev= continue ;; *) if test dlfiles = "$prev"; then func_append dlfiles " $arg" else func_append dlprefiles " $arg" fi prev= continue ;; esac ;; expsyms) export_symbols=$arg test -f "$arg" \ || func_fatal_error "symbol file '$arg' does not exist" prev= continue ;; expsyms_regex) export_symbols_regex=$arg prev= continue ;; framework) case $host in *-*-darwin*) case "$deplibs " in *" $qarg.ltframework "*) ;; *) func_append deplibs " $qarg.ltframework" # this is fixed later ;; esac ;; esac prev= continue ;; inst_prefix) inst_prefix_dir=$arg prev= continue ;; mllvm) # Clang does not use LLVM to link, so we can simply discard any # '-mllvm $arg' options when doing the link step. prev= continue ;; objectlist) if test -f "$arg"; then save_arg=$arg moreargs= for fil in `cat "$save_arg"` do # func_append moreargs " $fil" arg=$fil # A libtool-controlled object. # Check to see that this really is a libtool object. if func_lalib_unsafe_p "$arg"; then pic_object= non_pic_object= # Read the .lo file func_source "$arg" if test -z "$pic_object" || test -z "$non_pic_object" || test none = "$pic_object" && test none = "$non_pic_object"; then func_fatal_error "cannot find name of object for '$arg'" fi # Extract subdirectory from the argument. func_dirname "$arg" "/" "" xdir=$func_dirname_result if test none != "$pic_object"; then # Prepend the subdirectory the object is found in. pic_object=$xdir$pic_object if test dlfiles = "$prev"; then if test yes = "$build_libtool_libs" && test yes = "$dlopen_support"; then func_append dlfiles " $pic_object" prev= continue else # If libtool objects are unsupported, then we need to preload. prev=dlprefiles fi fi # CHECK ME: I think I busted this. -Ossama if test dlprefiles = "$prev"; then # Preload the old-style object. func_append dlprefiles " $pic_object" prev= fi # A PIC object. func_append libobjs " $pic_object" arg=$pic_object fi # Non-PIC object. if test none != "$non_pic_object"; then # Prepend the subdirectory the object is found in. non_pic_object=$xdir$non_pic_object # A standard non-PIC object func_append non_pic_objects " $non_pic_object" if test -z "$pic_object" || test none = "$pic_object"; then arg=$non_pic_object fi else # If the PIC object exists, use it instead. # $xdir was prepended to $pic_object above. non_pic_object=$pic_object func_append non_pic_objects " $non_pic_object" fi else # Only an error if not doing a dry-run. if $opt_dry_run; then # Extract subdirectory from the argument. func_dirname "$arg" "/" "" xdir=$func_dirname_result func_lo2o "$arg" pic_object=$xdir$objdir/$func_lo2o_result non_pic_object=$xdir$func_lo2o_result func_append libobjs " $pic_object" func_append non_pic_objects " $non_pic_object" else func_fatal_error "'$arg' is not a valid libtool object" fi fi done else func_fatal_error "link input file '$arg' does not exist" fi arg=$save_arg prev= continue ;; os2dllname) os2dllname=$arg prev= continue ;; precious_regex) precious_files_regex=$arg prev= continue ;; release) release=-$arg prev= continue ;; rpath | xrpath) # We need an absolute path. case $arg in [\\/]* | [A-Za-z]:[\\/]*) ;; *) func_fatal_error "only absolute run-paths are allowed" ;; esac if test rpath = "$prev"; then case "$rpath " in *" $arg "*) ;; *) func_append rpath " $arg" ;; esac else case "$xrpath " in *" $arg "*) ;; *) func_append xrpath " $arg" ;; esac fi prev= continue ;; shrext) shrext_cmds=$arg prev= continue ;; weak) func_append weak_libs " $arg" prev= continue ;; xassembler) func_append compiler_flags " -Xassembler $qarg" prev= func_append compile_command " -Xassembler $qarg" func_append finalize_command " -Xassembler $qarg" continue ;; xcclinker) func_append linker_flags " $qarg" func_append compiler_flags " $qarg" prev= func_append compile_command " $qarg" func_append finalize_command " $qarg" continue ;; xcompiler) func_append compiler_flags " $qarg" prev= func_append compile_command " $qarg" func_append finalize_command " $qarg" continue ;; xlinker) func_append linker_flags " $qarg" func_append compiler_flags " $wl$qarg" prev= func_append compile_command " $wl$qarg" func_append finalize_command " $wl$qarg" continue ;; *) eval "$prev=\"\$arg\"" prev= continue ;; esac fi # test -n "$prev" prevarg=$arg case $arg in -all-static) if test -n "$link_static_flag"; then # See comment for -static flag below, for more details. func_append compile_command " $link_static_flag" func_append finalize_command " $link_static_flag" fi continue ;; -allow-undefined) # FIXME: remove this flag sometime in the future. func_fatal_error "'-allow-undefined' must not be used because it is the default" ;; -avoid-version) avoid_version=yes continue ;; -bindir) prev=bindir continue ;; -dlopen) prev=dlfiles continue ;; -dlpreopen) prev=dlprefiles continue ;; -export-dynamic) export_dynamic=yes continue ;; -export-symbols | -export-symbols-regex) if test -n "$export_symbols" || test -n "$export_symbols_regex"; then func_fatal_error "more than one -exported-symbols argument is not allowed" fi if test X-export-symbols = "X$arg"; then prev=expsyms else prev=expsyms_regex fi continue ;; -framework) prev=framework continue ;; -inst-prefix-dir) prev=inst_prefix continue ;; # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:* # so, if we see these flags be careful not to treat them like -L -L[A-Z][A-Z]*:*) case $with_gcc/$host in no/*-*-irix* | /*-*-irix*) func_append compile_command " $arg" func_append finalize_command " $arg" ;; esac continue ;; -L*) func_stripname "-L" '' "$arg" if test -z "$func_stripname_result"; then if test "$#" -gt 0; then func_fatal_error "require no space between '-L' and '$1'" else func_fatal_error "need path for '-L' option" fi fi func_resolve_sysroot "$func_stripname_result" dir=$func_resolve_sysroot_result # We need an absolute path. case $dir in [\\/]* | [A-Za-z]:[\\/]*) ;; *) absdir=`cd "$dir" && pwd` test -z "$absdir" && \ func_fatal_error "cannot determine absolute directory name of '$dir'" dir=$absdir ;; esac case "$deplibs " in *" -L$dir "* | *" $arg "*) # Will only happen for absolute or sysroot arguments ;; *) # Preserve sysroot, but never include relative directories case $dir in [\\/]* | [A-Za-z]:[\\/]* | =*) func_append deplibs " $arg" ;; *) func_append deplibs " -L$dir" ;; esac func_append lib_search_path " $dir" ;; esac case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) testbindir=`$ECHO "$dir" | $SED 's*/lib$*/bin*'` case :$dllsearchpath: in *":$dir:"*) ;; ::) dllsearchpath=$dir;; *) func_append dllsearchpath ":$dir";; esac case :$dllsearchpath: in *":$testbindir:"*) ;; ::) dllsearchpath=$testbindir;; *) func_append dllsearchpath ":$testbindir";; esac ;; esac continue ;; -l*) if test X-lc = "X$arg" || test X-lm = "X$arg"; then case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc* | *-*-haiku*) # These systems don't actually have a C or math library (as such) continue ;; *-*-os2*) # These systems don't actually have a C library (as such) test X-lc = "X$arg" && continue ;; *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig* | *-*-midnightbsd*) # Do not include libc due to us having libc/libc_r. test X-lc = "X$arg" && continue ;; *-*-rhapsody* | *-*-darwin1.[012]) # Rhapsody C and math libraries are in the System framework func_append deplibs " System.ltframework" continue ;; *-*-sco3.2v5* | *-*-sco5v6*) # Causes problems with __ctype test X-lc = "X$arg" && continue ;; *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*) # Compiler inserts libc in the correct place for threads to work test X-lc = "X$arg" && continue ;; esac elif test X-lc_r = "X$arg"; then case $host in *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig* | *-*-midnightbsd*) # Do not include libc_r directly, use -pthread flag. continue ;; esac fi func_append deplibs " $arg" continue ;; -mllvm) prev=mllvm continue ;; -module) module=yes continue ;; # Tru64 UNIX uses -model [arg] to determine the layout of C++ # classes, name mangling, and exception handling. # Darwin uses the -arch flag to determine output architecture. -model|-arch|-isysroot|--sysroot) func_append compiler_flags " $arg" func_append compile_command " $arg" func_append finalize_command " $arg" prev=xcompiler continue ;; # Solaris ld rejects as of 11.4. Refer to Oracle bug 22985199. -pthread) case $host in *solaris2*) ;; *) case "$new_inherited_linker_flags " in *" $arg "*) ;; * ) func_append new_inherited_linker_flags " $arg" ;; esac ;; esac continue ;; -mt|-mthreads|-kthread|-Kthread|-pthreads|--thread-safe \ |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*) func_append compiler_flags " $arg" func_append compile_command " $arg" func_append finalize_command " $arg" case "$new_inherited_linker_flags " in *" $arg "*) ;; * ) func_append new_inherited_linker_flags " $arg" ;; esac continue ;; -multi_module) single_module=$wl-multi_module continue ;; -no-fast-install) fast_install=no continue ;; -no-install) case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*) # The PATH hackery in wrapper scripts is required on Windows # and Darwin in order for the loader to find any dlls it needs. func_warning "'-no-install' is ignored for $host" func_warning "assuming '-no-fast-install' instead" fast_install=no ;; *) no_install=yes ;; esac continue ;; -no-undefined) allow_undefined=no continue ;; -objectlist) prev=objectlist continue ;; -os2dllname) prev=os2dllname continue ;; -o) prev=output ;; -precious-files-regex) prev=precious_regex continue ;; -release) prev=release continue ;; -rpath) prev=rpath continue ;; -R) prev=xrpath continue ;; -R*) func_stripname '-R' '' "$arg" dir=$func_stripname_result # We need an absolute path. case $dir in [\\/]* | [A-Za-z]:[\\/]*) ;; =*) func_stripname '=' '' "$dir" dir=$lt_sysroot$func_stripname_result ;; *) func_fatal_error "only absolute run-paths are allowed" ;; esac case "$xrpath " in *" $dir "*) ;; *) func_append xrpath " $dir" ;; esac continue ;; -shared) # The effects of -shared are defined in a previous loop. continue ;; -shrext) prev=shrext continue ;; -static | -static-libtool-libs) # The effects of -static are defined in a previous loop. # We used to do the same as -all-static on platforms that # didn't have a PIC flag, but the assumption that the effects # would be equivalent was wrong. It would break on at least # Digital Unix and AIX. continue ;; -thread-safe) thread_safe=yes continue ;; -version-info) prev=vinfo continue ;; -version-number) prev=vinfo vinfo_number=yes continue ;; -weak) prev=weak continue ;; -Wc,*) func_stripname '-Wc,' '' "$arg" args=$func_stripname_result arg= save_ifs=$IFS; IFS=, for flag in $args; do IFS=$save_ifs func_quote_arg pretty "$flag" func_append arg " $func_quote_arg_result" func_append compiler_flags " $func_quote_arg_result" done IFS=$save_ifs func_stripname ' ' '' "$arg" arg=$func_stripname_result ;; -Wl,*) func_stripname '-Wl,' '' "$arg" args=$func_stripname_result arg= save_ifs=$IFS; IFS=, for flag in $args; do IFS=$save_ifs func_quote_arg pretty "$flag" func_append arg " $wl$func_quote_arg_result" func_append compiler_flags " $wl$func_quote_arg_result" func_append linker_flags " $func_quote_arg_result" done IFS=$save_ifs func_stripname ' ' '' "$arg" arg=$func_stripname_result ;; -Xassembler) prev=xassembler continue ;; -Xcompiler) prev=xcompiler continue ;; -Xlinker) prev=xlinker continue ;; -XCClinker) prev=xcclinker continue ;; # -msg_* for osf cc -msg_*) func_quote_arg pretty "$arg" arg=$func_quote_arg_result ;; # Flags to be passed through unchanged, with rationale: # -64, -mips[0-9] enable 64-bit mode for the SGI compiler # -r[0-9][0-9]* specify processor for the SGI compiler # -xarch=*, -xtarget=* enable 64-bit mode for the Sun compiler # +DA*, +DD* enable 64-bit mode for the HP compiler # -q* compiler args for the IBM compiler # -m*, -t[45]*, -txscale* architecture-specific flags for GCC # -F/path path to uninstalled frameworks, gcc on darwin # -p, -pg, --coverage, -fprofile-* profiling flags for GCC # -fstack-protector* stack protector flags for GCC # @file GCC response files # -tp=* Portland pgcc target processor selection # --sysroot=* for sysroot support # -O*, -g*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization # -specs=* GCC specs files # -stdlib=* select c++ std lib with clang # -fsanitize=* Clang/GCC memory and address sanitizer # -fuse-ld=* Linker select flags for GCC # -Wa,* Pass flags directly to the assembler -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \ -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \ -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*| \ -specs=*|-fsanitize=*|-fuse-ld=*|-Wa,*) func_quote_arg pretty "$arg" arg=$func_quote_arg_result func_append compile_command " $arg" func_append finalize_command " $arg" func_append compiler_flags " $arg" continue ;; -Z*) if test os2 = "`expr $host : '.*\(os2\)'`"; then # OS/2 uses -Zxxx to specify OS/2-specific options compiler_flags="$compiler_flags $arg" func_append compile_command " $arg" func_append finalize_command " $arg" case $arg in -Zlinker | -Zstack) prev=xcompiler ;; esac continue else # Otherwise treat like 'Some other compiler flag' below func_quote_arg pretty "$arg" arg=$func_quote_arg_result fi ;; # Some other compiler flag. -* | +*) func_quote_arg pretty "$arg" arg=$func_quote_arg_result ;; *.$objext) # A standard object. func_append objs " $arg" ;; *.lo) # A libtool-controlled object. # Check to see that this really is a libtool object. if func_lalib_unsafe_p "$arg"; then pic_object= non_pic_object= # Read the .lo file func_source "$arg" if test -z "$pic_object" || test -z "$non_pic_object" || test none = "$pic_object" && test none = "$non_pic_object"; then func_fatal_error "cannot find name of object for '$arg'" fi # Extract subdirectory from the argument. func_dirname "$arg" "/" "" xdir=$func_dirname_result test none = "$pic_object" || { # Prepend the subdirectory the object is found in. pic_object=$xdir$pic_object if test dlfiles = "$prev"; then if test yes = "$build_libtool_libs" && test yes = "$dlopen_support"; then func_append dlfiles " $pic_object" prev= continue else # If libtool objects are unsupported, then we need to preload. prev=dlprefiles fi fi # CHECK ME: I think I busted this. -Ossama if test dlprefiles = "$prev"; then # Preload the old-style object. func_append dlprefiles " $pic_object" prev= fi # A PIC object. func_append libobjs " $pic_object" arg=$pic_object } # Non-PIC object. if test none != "$non_pic_object"; then # Prepend the subdirectory the object is found in. non_pic_object=$xdir$non_pic_object # A standard non-PIC object func_append non_pic_objects " $non_pic_object" if test -z "$pic_object" || test none = "$pic_object"; then arg=$non_pic_object fi else # If the PIC object exists, use it instead. # $xdir was prepended to $pic_object above. non_pic_object=$pic_object func_append non_pic_objects " $non_pic_object" fi else # Only an error if not doing a dry-run. if $opt_dry_run; then # Extract subdirectory from the argument. func_dirname "$arg" "/" "" xdir=$func_dirname_result func_lo2o "$arg" pic_object=$xdir$objdir/$func_lo2o_result non_pic_object=$xdir$func_lo2o_result func_append libobjs " $pic_object" func_append non_pic_objects " $non_pic_object" else func_fatal_error "'$arg' is not a valid libtool object" fi fi ;; *.$libext) # An archive. func_append deplibs " $arg" func_append old_deplibs " $arg" continue ;; *.la) # A libtool-controlled library. func_resolve_sysroot "$arg" if test dlfiles = "$prev"; then # This library was specified with -dlopen. func_append dlfiles " $func_resolve_sysroot_result" prev= elif test dlprefiles = "$prev"; then # The library was specified with -dlpreopen. func_append dlprefiles " $func_resolve_sysroot_result" prev= else func_append deplibs " $func_resolve_sysroot_result" fi continue ;; # Some other compiler argument. *) # Unknown arguments in both finalize_command and compile_command need # to be aesthetically quoted because they are evaled later. func_quote_arg pretty "$arg" arg=$func_quote_arg_result ;; esac # arg # Now actually substitute the argument into the commands. if test -n "$arg"; then func_append compile_command " $arg" func_append finalize_command " $arg" fi done # argument parsing loop test -n "$prev" && \ func_fatal_help "the '$prevarg' option requires an argument" if test yes = "$export_dynamic" && test -n "$export_dynamic_flag_spec"; then eval arg=\"$export_dynamic_flag_spec\" func_append compile_command " $arg" func_append finalize_command " $arg" fi oldlibs= # calculate the name of the file, without its directory func_basename "$output" outputname=$func_basename_result libobjs_save=$libobjs if test -n "$shlibpath_var"; then # get the directories listed in $shlibpath_var eval shlib_search_path=\`\$ECHO \"\$$shlibpath_var\" \| \$SED \'s/:/ /g\'\` else shlib_search_path= fi eval sys_lib_search_path=\"$sys_lib_search_path_spec\" eval sys_lib_dlsearch_path=\"$sys_lib_dlsearch_path_spec\" # Definition is injected by LT_CONFIG during libtool generation. func_munge_path_list sys_lib_dlsearch_path "$LT_SYS_LIBRARY_PATH" func_dirname "$output" "/" "" output_objdir=$func_dirname_result$objdir func_to_tool_file "$output_objdir/" tool_output_objdir=$func_to_tool_file_result # Create the object directory. func_mkdir_p "$output_objdir" # Determine the type of output case $output in "") func_fatal_help "you must specify an output file" ;; *.$libext) linkmode=oldlib ;; *.lo | *.$objext) linkmode=obj ;; *.la) linkmode=lib ;; *) linkmode=prog ;; # Anything else should be a program. esac specialdeplibs= libs= # Find all interdependent deplibs by searching for libraries # that are linked more than once (e.g. -la -lb -la) for deplib in $deplibs; do if $opt_preserve_dup_deps; then case "$libs " in *" $deplib "*) func_append specialdeplibs " $deplib" ;; esac fi func_append libs " $deplib" done if test lib = "$linkmode"; then libs="$predeps $libs $compiler_lib_search_path $postdeps" # Compute libraries that are listed more than once in $predeps # $postdeps and mark them as special (i.e., whose duplicates are # not to be eliminated). pre_post_deps= if $opt_duplicate_compiler_generated_deps; then for pre_post_dep in $predeps $postdeps; do case "$pre_post_deps " in *" $pre_post_dep "*) func_append specialdeplibs " $pre_post_deps" ;; esac func_append pre_post_deps " $pre_post_dep" done fi pre_post_deps= fi deplibs= newdependency_libs= newlib_search_path= need_relink=no # whether we're linking any uninstalled libtool libraries notinst_deplibs= # not-installed libtool libraries notinst_path= # paths that contain not-installed libtool libraries case $linkmode in lib) passes="conv dlpreopen link" for file in $dlfiles $dlprefiles; do case $file in *.la) ;; *) func_fatal_help "libraries can '-dlopen' only libtool libraries: $file" ;; esac done ;; prog) compile_deplibs= finalize_deplibs= alldeplibs=false newdlfiles= newdlprefiles= passes="conv scan dlopen dlpreopen link" ;; *) passes="conv" ;; esac for pass in $passes; do # The preopen pass in lib mode reverses $deplibs; put it back here # so that -L comes before libs that need it for instance... if test lib,link = "$linkmode,$pass"; then ## FIXME: Find the place where the list is rebuilt in the wrong ## order, and fix it there properly tmp_deplibs= for deplib in $deplibs; do tmp_deplibs="$deplib $tmp_deplibs" done deplibs=$tmp_deplibs fi if test lib,link = "$linkmode,$pass" || test prog,scan = "$linkmode,$pass"; then libs=$deplibs deplibs= fi if test prog = "$linkmode"; then case $pass in dlopen) libs=$dlfiles ;; dlpreopen) libs=$dlprefiles ;; link) libs="$deplibs %DEPLIBS% $dependency_libs" ;; esac fi if test lib,dlpreopen = "$linkmode,$pass"; then # Collect and forward deplibs of preopened libtool libs for lib in $dlprefiles; do # Ignore non-libtool-libs dependency_libs= func_resolve_sysroot "$lib" case $lib in *.la) func_source "$func_resolve_sysroot_result" ;; esac # Collect preopened libtool deplibs, except any this library # has declared as weak libs for deplib in $dependency_libs; do func_basename "$deplib" deplib_base=$func_basename_result case " $weak_libs " in *" $deplib_base "*) ;; *) func_append deplibs " $deplib" ;; esac done done libs=$dlprefiles fi if test dlopen = "$pass"; then # Collect dlpreopened libraries save_deplibs=$deplibs deplibs= fi for deplib in $libs; do lib= found=false case $deplib in -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \ |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*) if test prog,link = "$linkmode,$pass"; then compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else func_append compiler_flags " $deplib" if test lib = "$linkmode"; then case "$new_inherited_linker_flags " in *" $deplib "*) ;; * ) func_append new_inherited_linker_flags " $deplib" ;; esac fi fi continue ;; -l*) if test lib != "$linkmode" && test prog != "$linkmode"; then func_warning "'-l' is ignored for archives/objects" continue fi func_stripname '-l' '' "$deplib" name=$func_stripname_result if test lib = "$linkmode"; then searchdirs="$newlib_search_path $lib_search_path $compiler_lib_search_dirs $sys_lib_search_path $shlib_search_path" else searchdirs="$newlib_search_path $lib_search_path $sys_lib_search_path $shlib_search_path" fi for searchdir in $searchdirs; do for search_ext in .la $std_shrext .so .a; do # Search the libtool library lib=$searchdir/lib$name$search_ext if test -f "$lib"; then if test .la = "$search_ext"; then found=: else found=false fi break 2 fi done done if $found; then # deplib is a libtool library # If $allow_libtool_libs_with_static_runtimes && $deplib is a stdlib, # We need to do some special things here, and not later. if test yes = "$allow_libtool_libs_with_static_runtimes"; then case " $predeps $postdeps " in *" $deplib "*) if func_lalib_p "$lib"; then library_names= old_library= func_source "$lib" for l in $old_library $library_names; do ll=$l done if test "X$ll" = "X$old_library"; then # only static version available found=false func_dirname "$lib" "" "." ladir=$func_dirname_result lib=$ladir/$old_library if test prog,link = "$linkmode,$pass"; then compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else deplibs="$deplib $deplibs" test lib = "$linkmode" && newdependency_libs="$deplib $newdependency_libs" fi continue fi fi ;; *) ;; esac fi else # deplib doesn't seem to be a libtool library if test prog,link = "$linkmode,$pass"; then compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else deplibs="$deplib $deplibs" test lib = "$linkmode" && newdependency_libs="$deplib $newdependency_libs" fi continue fi ;; # -l *.ltframework) if test prog,link = "$linkmode,$pass"; then compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else deplibs="$deplib $deplibs" if test lib = "$linkmode"; then case "$new_inherited_linker_flags " in *" $deplib "*) ;; * ) func_append new_inherited_linker_flags " $deplib" ;; esac fi fi continue ;; -L*) case $linkmode in lib) deplibs="$deplib $deplibs" test conv = "$pass" && continue newdependency_libs="$deplib $newdependency_libs" func_stripname '-L' '' "$deplib" func_resolve_sysroot "$func_stripname_result" func_append newlib_search_path " $func_resolve_sysroot_result" ;; prog) if test conv = "$pass"; then deplibs="$deplib $deplibs" continue fi if test scan = "$pass"; then deplibs="$deplib $deplibs" else compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" fi func_stripname '-L' '' "$deplib" func_resolve_sysroot "$func_stripname_result" func_append newlib_search_path " $func_resolve_sysroot_result" ;; *) func_warning "'-L' is ignored for archives/objects" ;; esac # linkmode continue ;; # -L -R*) if test link = "$pass"; then func_stripname '-R' '' "$deplib" func_resolve_sysroot "$func_stripname_result" dir=$func_resolve_sysroot_result # Make sure the xrpath contains only unique directories. case "$xrpath " in *" $dir "*) ;; *) func_append xrpath " $dir" ;; esac fi deplibs="$deplib $deplibs" continue ;; *.la) func_resolve_sysroot "$deplib" lib=$func_resolve_sysroot_result ;; *.$libext) if test conv = "$pass"; then deplibs="$deplib $deplibs" continue fi case $linkmode in lib) # Linking convenience modules into shared libraries is allowed, # but linking other static libraries is non-portable. case " $dlpreconveniencelibs " in *" $deplib "*) ;; *) valid_a_lib=false case $deplibs_check_method in match_pattern*) set dummy $deplibs_check_method; shift match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"` if eval "\$ECHO \"$deplib\"" 2>/dev/null | $SED 10q \ | $EGREP "$match_pattern_regex" > /dev/null; then valid_a_lib=: fi ;; pass_all) valid_a_lib=: ;; esac if $valid_a_lib; then echo $ECHO "*** Warning: Linking the shared library $output against the" $ECHO "*** static library $deplib is not portable!" deplibs="$deplib $deplibs" else echo $ECHO "*** Warning: Trying to link with static lib archive $deplib." echo "*** I have the capability to make that library automatically link in when" echo "*** you link to this library. But I can only do this if you have a" echo "*** shared version of the library, which you do not appear to have" echo "*** because the file extensions .$libext of this argument makes me believe" echo "*** that it is just a static archive that I should not use here." fi ;; esac continue ;; prog) if test link != "$pass"; then deplibs="$deplib $deplibs" else compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" fi continue ;; esac # linkmode ;; # *.$libext *.lo | *.$objext) if test conv = "$pass"; then deplibs="$deplib $deplibs" elif test prog = "$linkmode"; then if test dlpreopen = "$pass" || test yes != "$dlopen_support" || test no = "$build_libtool_libs"; then # If there is no dlopen support or we're linking statically, # we need to preload. func_append newdlprefiles " $deplib" compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else func_append newdlfiles " $deplib" fi fi continue ;; %DEPLIBS%) alldeplibs=: continue ;; esac # case $deplib $found || test -f "$lib" \ || func_fatal_error "cannot find the library '$lib' or unhandled argument '$deplib'" # Check to see that this really is a libtool archive. func_lalib_unsafe_p "$lib" \ || func_fatal_error "'$lib' is not a valid libtool archive" func_dirname "$lib" "" "." ladir=$func_dirname_result dlname= dlopen= dlpreopen= libdir= library_names= old_library= inherited_linker_flags= # If the library was installed with an old release of libtool, # it will not redefine variables installed, or shouldnotlink installed=yes shouldnotlink=no avoidtemprpath= # Read the .la file func_source "$lib" # Convert "-framework foo" to "foo.ltframework" if test -n "$inherited_linker_flags"; then tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'` for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do case " $new_inherited_linker_flags " in *" $tmp_inherited_linker_flag "*) ;; *) func_append new_inherited_linker_flags " $tmp_inherited_linker_flag";; esac done fi dependency_libs=`$ECHO " $dependency_libs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` if test lib,link = "$linkmode,$pass" || test prog,scan = "$linkmode,$pass" || { test prog != "$linkmode" && test lib != "$linkmode"; }; then test -n "$dlopen" && func_append dlfiles " $dlopen" test -n "$dlpreopen" && func_append dlprefiles " $dlpreopen" fi if test conv = "$pass"; then # Only check for convenience libraries deplibs="$lib $deplibs" if test -z "$libdir"; then if test -z "$old_library"; then func_fatal_error "cannot find name of link library for '$lib'" fi # It is a libtool convenience library, so add in its objects. func_append convenience " $ladir/$objdir/$old_library" func_append old_convenience " $ladir/$objdir/$old_library" elif test prog != "$linkmode" && test lib != "$linkmode"; then func_fatal_error "'$lib' is not a convenience library" fi tmp_libs= for deplib in $dependency_libs; do deplibs="$deplib $deplibs" if $opt_preserve_dup_deps; then case "$tmp_libs " in *" $deplib "*) func_append specialdeplibs " $deplib" ;; esac fi func_append tmp_libs " $deplib" done continue fi # $pass = conv # Get the name of the library we link against. linklib= if test -n "$old_library" && { test yes = "$prefer_static_libs" || test built,no = "$prefer_static_libs,$installed"; }; then linklib=$old_library else for l in $old_library $library_names; do linklib=$l done fi if test -z "$linklib"; then func_fatal_error "cannot find name of link library for '$lib'" fi # This library was specified with -dlopen. if test dlopen = "$pass"; then test -z "$libdir" \ && func_fatal_error "cannot -dlopen a convenience library: '$lib'" if test -z "$dlname" || test yes != "$dlopen_support" || test no = "$build_libtool_libs" then # If there is no dlname, no dlopen support or we're linking # statically, we need to preload. We also need to preload any # dependent libraries so libltdl's deplib preloader doesn't # bomb out in the load deplibs phase. func_append dlprefiles " $lib $dependency_libs" else func_append newdlfiles " $lib" fi continue fi # $pass = dlopen # We need an absolute path. case $ladir in [\\/]* | [A-Za-z]:[\\/]*) abs_ladir=$ladir ;; *) abs_ladir=`cd "$ladir" && pwd` if test -z "$abs_ladir"; then func_warning "cannot determine absolute directory name of '$ladir'" func_warning "passing it literally to the linker, although it might fail" abs_ladir=$ladir fi ;; esac func_basename "$lib" laname=$func_basename_result # Find the relevant object directory and library name. if test yes = "$installed"; then if test ! -f "$lt_sysroot$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then func_warning "library '$lib' was moved." dir=$ladir absdir=$abs_ladir libdir=$abs_ladir else dir=$lt_sysroot$libdir absdir=$lt_sysroot$libdir fi test yes = "$hardcode_automatic" && avoidtemprpath=yes else if test ! -f "$ladir/$objdir/$linklib" && test -f "$abs_ladir/$linklib"; then dir=$ladir absdir=$abs_ladir # Remove this search path later func_append notinst_path " $abs_ladir" else dir=$ladir/$objdir absdir=$abs_ladir/$objdir # Remove this search path later func_append notinst_path " $abs_ladir" fi fi # $installed = yes func_stripname 'lib' '.la' "$laname" name=$func_stripname_result # This library was specified with -dlpreopen. if test dlpreopen = "$pass"; then if test -z "$libdir" && test prog = "$linkmode"; then func_fatal_error "only libraries may -dlpreopen a convenience library: '$lib'" fi case $host in # special handling for platforms with PE-DLLs. *cygwin* | *mingw* | *cegcc* ) # Linker will automatically link against shared library if both # static and shared are present. Therefore, ensure we extract # symbols from the import library if a shared library is present # (otherwise, the dlopen module name will be incorrect). We do # this by putting the import library name into $newdlprefiles. # We recover the dlopen module name by 'saving' the la file # name in a special purpose variable, and (later) extracting the # dlname from the la file. if test -n "$dlname"; then func_tr_sh "$dir/$linklib" eval "libfile_$func_tr_sh_result=\$abs_ladir/\$laname" func_append newdlprefiles " $dir/$linklib" else func_append newdlprefiles " $dir/$old_library" # Keep a list of preopened convenience libraries to check # that they are being used correctly in the link pass. test -z "$libdir" && \ func_append dlpreconveniencelibs " $dir/$old_library" fi ;; * ) # Prefer using a static library (so that no silly _DYNAMIC symbols # are required to link). if test -n "$old_library"; then func_append newdlprefiles " $dir/$old_library" # Keep a list of preopened convenience libraries to check # that they are being used correctly in the link pass. test -z "$libdir" && \ func_append dlpreconveniencelibs " $dir/$old_library" # Otherwise, use the dlname, so that lt_dlopen finds it. elif test -n "$dlname"; then func_append newdlprefiles " $dir/$dlname" else func_append newdlprefiles " $dir/$linklib" fi ;; esac fi # $pass = dlpreopen if test -z "$libdir"; then # Link the convenience library if test lib = "$linkmode"; then deplibs="$dir/$old_library $deplibs" elif test prog,link = "$linkmode,$pass"; then compile_deplibs="$dir/$old_library $compile_deplibs" finalize_deplibs="$dir/$old_library $finalize_deplibs" else deplibs="$lib $deplibs" # used for prog,scan pass fi continue fi if test prog = "$linkmode" && test link != "$pass"; then func_append newlib_search_path " $ladir" deplibs="$lib $deplibs" linkalldeplibs=false if test no != "$link_all_deplibs" || test -z "$library_names" || test no = "$build_libtool_libs"; then linkalldeplibs=: fi tmp_libs= for deplib in $dependency_libs; do case $deplib in -L*) func_stripname '-L' '' "$deplib" func_resolve_sysroot "$func_stripname_result" func_append newlib_search_path " $func_resolve_sysroot_result" ;; esac # Need to link against all dependency_libs? if $linkalldeplibs; then deplibs="$deplib $deplibs" else # Need to hardcode shared library paths # or/and link against static libraries newdependency_libs="$deplib $newdependency_libs" fi if $opt_preserve_dup_deps; then case "$tmp_libs " in *" $deplib "*) func_append specialdeplibs " $deplib" ;; esac fi func_append tmp_libs " $deplib" done # for deplib continue fi # $linkmode = prog... if test prog,link = "$linkmode,$pass"; then if test -n "$library_names" && { { test no = "$prefer_static_libs" || test built,yes = "$prefer_static_libs,$installed"; } || test -z "$old_library"; }; then # We need to hardcode the library path if test -n "$shlibpath_var" && test -z "$avoidtemprpath"; then # Make sure the rpath contains only unique directories. case $temp_rpath: in *"$absdir:"*) ;; *) func_append temp_rpath "$absdir:" ;; esac fi # Hardcode the library path. # Skip directories that are in the system default run-time # search path. case " $sys_lib_dlsearch_path " in *" $absdir "*) ;; *) case "$compile_rpath " in *" $absdir "*) ;; *) func_append compile_rpath " $absdir" ;; esac ;; esac case " $sys_lib_dlsearch_path " in *" $libdir "*) ;; *) case "$finalize_rpath " in *" $libdir "*) ;; *) func_append finalize_rpath " $libdir" ;; esac ;; esac fi # $linkmode,$pass = prog,link... if $alldeplibs && { test pass_all = "$deplibs_check_method" || { test yes = "$build_libtool_libs" && test -n "$library_names"; }; }; then # We only need to search for static libraries continue fi fi link_static=no # Whether the deplib will be linked statically use_static_libs=$prefer_static_libs if test built = "$use_static_libs" && test yes = "$installed"; then use_static_libs=no fi if test -n "$library_names" && { test no = "$use_static_libs" || test -z "$old_library"; }; then case $host in *cygwin* | *mingw* | *cegcc* | *os2*) # No point in relinking DLLs because paths are not encoded func_append notinst_deplibs " $lib" need_relink=no ;; *) if test no = "$installed"; then func_append notinst_deplibs " $lib" need_relink=yes fi ;; esac # This is a shared library # Warn about portability, can't link against -module's on some # systems (darwin). Don't bleat about dlopened modules though! dlopenmodule= for dlpremoduletest in $dlprefiles; do if test "X$dlpremoduletest" = "X$lib"; then dlopenmodule=$dlpremoduletest break fi done if test -z "$dlopenmodule" && test yes = "$shouldnotlink" && test link = "$pass"; then echo if test prog = "$linkmode"; then $ECHO "*** Warning: Linking the executable $output against the loadable module" else $ECHO "*** Warning: Linking the shared library $output against the loadable module" fi $ECHO "*** $linklib is not portable!" fi if test lib = "$linkmode" && test yes = "$hardcode_into_libs"; then # Hardcode the library path. # Skip directories that are in the system default run-time # search path. case " $sys_lib_dlsearch_path " in *" $absdir "*) ;; *) case "$compile_rpath " in *" $absdir "*) ;; *) func_append compile_rpath " $absdir" ;; esac ;; esac case " $sys_lib_dlsearch_path " in *" $libdir "*) ;; *) case "$finalize_rpath " in *" $libdir "*) ;; *) func_append finalize_rpath " $libdir" ;; esac ;; esac fi if test -n "$old_archive_from_expsyms_cmds"; then # figure out the soname set dummy $library_names shift realname=$1 shift libname=`eval "\\$ECHO \"$libname_spec\""` # use dlname if we got it. it's perfectly good, no? if test -n "$dlname"; then soname=$dlname elif test -n "$soname_spec"; then # bleh windows case $host in *cygwin* | mingw* | *cegcc* | *os2*) func_arith $current - $age major=$func_arith_result versuffix=-$major ;; esac eval soname=\"$soname_spec\" else soname=$realname fi # Make a new name for the extract_expsyms_cmds to use soroot=$soname func_basename "$soroot" soname=$func_basename_result func_stripname 'lib' '.dll' "$soname" newlib=libimp-$func_stripname_result.a # If the library has no export list, then create one now if test -f "$output_objdir/$soname-def"; then : else func_verbose "extracting exported symbol list from '$soname'" func_execute_cmds "$extract_expsyms_cmds" 'exit $?' fi # Create $newlib if test -f "$output_objdir/$newlib"; then :; else func_verbose "generating import library for '$soname'" func_execute_cmds "$old_archive_from_expsyms_cmds" 'exit $?' fi # make sure the library variables are pointing to the new library dir=$output_objdir linklib=$newlib fi # test -n "$old_archive_from_expsyms_cmds" if test prog = "$linkmode" || test relink != "$opt_mode"; then add_shlibpath= add_dir= add= lib_linked=yes case $hardcode_action in immediate | unsupported) if test no = "$hardcode_direct"; then add=$dir/$linklib case $host in *-*-sco3.2v5.0.[024]*) add_dir=-L$dir ;; *-*-sysv4*uw2*) add_dir=-L$dir ;; *-*-sysv5OpenUNIX* | *-*-sysv5UnixWare7.[01].[10]* | \ *-*-unixware7*) add_dir=-L$dir ;; *-*-darwin* ) # if the lib is a (non-dlopened) module then we cannot # link against it, someone is ignoring the earlier warnings if /usr/bin/file -L $add 2> /dev/null | $GREP ": [^:]* bundle" >/dev/null; then if test "X$dlopenmodule" != "X$lib"; then $ECHO "*** Warning: lib $linklib is a module, not a shared library" if test -z "$old_library"; then echo echo "*** And there doesn't seem to be a static archive available" echo "*** The link will probably fail, sorry" else add=$dir/$old_library fi elif test -n "$old_library"; then add=$dir/$old_library fi fi esac elif test no = "$hardcode_minus_L"; then case $host in *-*-sunos*) add_shlibpath=$dir ;; esac add_dir=-L$dir add=-l$name elif test no = "$hardcode_shlibpath_var"; then add_shlibpath=$dir add=-l$name else lib_linked=no fi ;; relink) if test yes = "$hardcode_direct" && test no = "$hardcode_direct_absolute"; then add=$dir/$linklib elif test yes = "$hardcode_minus_L"; then add_dir=-L$absdir # Try looking first in the location we're being installed to. if test -n "$inst_prefix_dir"; then case $libdir in [\\/]*) func_append add_dir " -L$inst_prefix_dir$libdir" ;; esac fi add=-l$name elif test yes = "$hardcode_shlibpath_var"; then add_shlibpath=$dir add=-l$name else lib_linked=no fi ;; *) lib_linked=no ;; esac if test yes != "$lib_linked"; then func_fatal_configuration "unsupported hardcode properties" fi if test -n "$add_shlibpath"; then case :$compile_shlibpath: in *":$add_shlibpath:"*) ;; *) func_append compile_shlibpath "$add_shlibpath:" ;; esac fi if test prog = "$linkmode"; then test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs" test -n "$add" && compile_deplibs="$add $compile_deplibs" else test -n "$add_dir" && deplibs="$add_dir $deplibs" test -n "$add" && deplibs="$add $deplibs" if test yes != "$hardcode_direct" && test yes != "$hardcode_minus_L" && test yes = "$hardcode_shlibpath_var"; then case :$finalize_shlibpath: in *":$libdir:"*) ;; *) func_append finalize_shlibpath "$libdir:" ;; esac fi fi fi if test prog = "$linkmode" || test relink = "$opt_mode"; then add_shlibpath= add_dir= add= # Finalize command for both is simple: just hardcode it. if test yes = "$hardcode_direct" && test no = "$hardcode_direct_absolute"; then add=$libdir/$linklib elif test yes = "$hardcode_minus_L"; then add_dir=-L$libdir add=-l$name elif test yes = "$hardcode_shlibpath_var"; then case :$finalize_shlibpath: in *":$libdir:"*) ;; *) func_append finalize_shlibpath "$libdir:" ;; esac add=-l$name elif test yes = "$hardcode_automatic"; then if test -n "$inst_prefix_dir" && test -f "$inst_prefix_dir$libdir/$linklib"; then add=$inst_prefix_dir$libdir/$linklib else add=$libdir/$linklib fi else # We cannot seem to hardcode it, guess we'll fake it. add_dir=-L$libdir # Try looking first in the location we're being installed to. if test -n "$inst_prefix_dir"; then case $libdir in [\\/]*) func_append add_dir " -L$inst_prefix_dir$libdir" ;; esac fi add=-l$name fi if test prog = "$linkmode"; then test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs" test -n "$add" && finalize_deplibs="$add $finalize_deplibs" else test -n "$add_dir" && deplibs="$add_dir $deplibs" test -n "$add" && deplibs="$add $deplibs" fi fi elif test prog = "$linkmode"; then # Here we assume that one of hardcode_direct or hardcode_minus_L # is not unsupported. This is valid on all known static and # shared platforms. if test unsupported != "$hardcode_direct"; then test -n "$old_library" && linklib=$old_library compile_deplibs="$dir/$linklib $compile_deplibs" finalize_deplibs="$dir/$linklib $finalize_deplibs" else compile_deplibs="-l$name -L$dir $compile_deplibs" finalize_deplibs="-l$name -L$dir $finalize_deplibs" fi elif test yes = "$build_libtool_libs"; then # Not a shared library if test pass_all != "$deplibs_check_method"; then # We're trying link a shared library against a static one # but the system doesn't support it. # Just print a warning and add the library to dependency_libs so # that the program can be linked against the static library. echo $ECHO "*** Warning: This system cannot link to static lib archive $lib." echo "*** I have the capability to make that library automatically link in when" echo "*** you link to this library. But I can only do this if you have a" echo "*** shared version of the library, which you do not appear to have." if test yes = "$module"; then echo "*** But as you try to build a module library, libtool will still create " echo "*** a static module, that should work as long as the dlopening application" echo "*** is linked with the -dlopen flag to resolve symbols at runtime." if test -z "$global_symbol_pipe"; then echo echo "*** However, this would only work if libtool was able to extract symbol" echo "*** lists from a program, using 'nm' or equivalent, but libtool could" echo "*** not find such a program. So, this module is probably useless." echo "*** 'nm' from GNU binutils and a full rebuild may help." fi if test no = "$build_old_libs"; then build_libtool_libs=module build_old_libs=yes else build_libtool_libs=no fi fi else deplibs="$dir/$old_library $deplibs" link_static=yes fi fi # link shared/static library? if test lib = "$linkmode"; then if test -n "$dependency_libs" && { test yes != "$hardcode_into_libs" || test yes = "$build_old_libs" || test yes = "$link_static"; }; then # Extract -R from dependency_libs temp_deplibs= for libdir in $dependency_libs; do case $libdir in -R*) func_stripname '-R' '' "$libdir" temp_xrpath=$func_stripname_result case " $xrpath " in *" $temp_xrpath "*) ;; *) func_append xrpath " $temp_xrpath";; esac;; *) func_append temp_deplibs " $libdir";; esac done dependency_libs=$temp_deplibs fi func_append newlib_search_path " $absdir" # Link against this library test no = "$link_static" && newdependency_libs="$abs_ladir/$laname $newdependency_libs" # ... and its dependency_libs tmp_libs= for deplib in $dependency_libs; do newdependency_libs="$deplib $newdependency_libs" case $deplib in -L*) func_stripname '-L' '' "$deplib" func_resolve_sysroot "$func_stripname_result";; *) func_resolve_sysroot "$deplib" ;; esac if $opt_preserve_dup_deps; then case "$tmp_libs " in *" $func_resolve_sysroot_result "*) func_append specialdeplibs " $func_resolve_sysroot_result" ;; esac fi func_append tmp_libs " $func_resolve_sysroot_result" done if test no != "$link_all_deplibs"; then # Add the search paths of all dependency libraries for deplib in $dependency_libs; do path= case $deplib in -L*) path=$deplib ;; *.la) func_resolve_sysroot "$deplib" deplib=$func_resolve_sysroot_result func_dirname "$deplib" "" "." dir=$func_dirname_result # We need an absolute path. case $dir in [\\/]* | [A-Za-z]:[\\/]*) absdir=$dir ;; *) absdir=`cd "$dir" && pwd` if test -z "$absdir"; then func_warning "cannot determine absolute directory name of '$dir'" absdir=$dir fi ;; esac if $GREP "^installed=no" $deplib > /dev/null; then case $host in *-*-darwin*) depdepl= eval deplibrary_names=`$SED -n -e 's/^library_names=\(.*\)$/\1/p' $deplib` if test -n "$deplibrary_names"; then for tmp in $deplibrary_names; do depdepl=$tmp done if test -f "$absdir/$objdir/$depdepl"; then depdepl=$absdir/$objdir/$depdepl darwin_install_name=`$OTOOL -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'` if test -z "$darwin_install_name"; then darwin_install_name=`$OTOOL64 -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'` fi func_append compiler_flags " $wl-dylib_file $wl$darwin_install_name:$depdepl" func_append linker_flags " -dylib_file $darwin_install_name:$depdepl" path= fi fi ;; *) path=-L$absdir/$objdir ;; esac else eval libdir=`$SED -n -e 's/^libdir=\(.*\)$/\1/p' $deplib` test -z "$libdir" && \ func_fatal_error "'$deplib' is not a valid libtool archive" test "$absdir" != "$libdir" && \ func_warning "'$deplib' seems to be moved" path=-L$absdir fi ;; esac case " $deplibs " in *" $path "*) ;; *) deplibs="$path $deplibs" ;; esac done fi # link_all_deplibs != no fi # linkmode = lib done # for deplib in $libs if test link = "$pass"; then if test prog = "$linkmode"; then compile_deplibs="$new_inherited_linker_flags $compile_deplibs" finalize_deplibs="$new_inherited_linker_flags $finalize_deplibs" else compiler_flags="$compiler_flags "`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` fi fi dependency_libs=$newdependency_libs if test dlpreopen = "$pass"; then # Link the dlpreopened libraries before other libraries for deplib in $save_deplibs; do deplibs="$deplib $deplibs" done fi if test dlopen != "$pass"; then test conv = "$pass" || { # Make sure lib_search_path contains only unique directories. lib_search_path= for dir in $newlib_search_path; do case "$lib_search_path " in *" $dir "*) ;; *) func_append lib_search_path " $dir" ;; esac done newlib_search_path= } if test prog,link = "$linkmode,$pass"; then vars="compile_deplibs finalize_deplibs" else vars=deplibs fi for var in $vars dependency_libs; do # Add libraries to $var in reverse order eval tmp_libs=\"\$$var\" new_libs= for deplib in $tmp_libs; do # FIXME: Pedantically, this is the right thing to do, so # that some nasty dependency loop isn't accidentally # broken: #new_libs="$deplib $new_libs" # Pragmatically, this seems to cause very few problems in # practice: case $deplib in -L*) new_libs="$deplib $new_libs" ;; -R*) ;; *) # And here is the reason: when a library appears more # than once as an explicit dependence of a library, or # is implicitly linked in more than once by the # compiler, it is considered special, and multiple # occurrences thereof are not removed. Compare this # with having the same library being listed as a # dependency of multiple other libraries: in this case, # we know (pedantically, we assume) the library does not # need to be listed more than once, so we keep only the # last copy. This is not always right, but it is rare # enough that we require users that really mean to play # such unportable linking tricks to link the library # using -Wl,-lname, so that libtool does not consider it # for duplicate removal. case " $specialdeplibs " in *" $deplib "*) new_libs="$deplib $new_libs" ;; *) case " $new_libs " in *" $deplib "*) ;; *) new_libs="$deplib $new_libs" ;; esac ;; esac ;; esac done tmp_libs= for deplib in $new_libs; do case $deplib in -L*) case " $tmp_libs " in *" $deplib "*) ;; *) func_append tmp_libs " $deplib" ;; esac ;; *) func_append tmp_libs " $deplib" ;; esac done eval $var=\"$tmp_libs\" done # for var fi # Add Sun CC postdeps if required: test CXX = "$tagname" && { case $host_os in linux*) case `$CC -V 2>&1 | $SED 5q` in *Sun\ C*) # Sun C++ 5.9 func_suncc_cstd_abi if test no != "$suncc_use_cstd_abi"; then func_append postdeps ' -library=Cstd -library=Crun' fi ;; esac ;; solaris*) func_cc_basename "$CC" case $func_cc_basename_result in CC* | sunCC*) func_suncc_cstd_abi if test no != "$suncc_use_cstd_abi"; then func_append postdeps ' -library=Cstd -library=Crun' fi ;; esac ;; esac } # Last step: remove runtime libs from dependency_libs # (they stay in deplibs) tmp_libs= for i in $dependency_libs; do case " $predeps $postdeps $compiler_lib_search_path " in *" $i "*) i= ;; esac if test -n "$i"; then func_append tmp_libs " $i" fi done dependency_libs=$tmp_libs done # for pass if test prog = "$linkmode"; then dlfiles=$newdlfiles fi if test prog = "$linkmode" || test lib = "$linkmode"; then dlprefiles=$newdlprefiles fi case $linkmode in oldlib) if test -n "$dlfiles$dlprefiles" || test no != "$dlself"; then func_warning "'-dlopen' is ignored for archives" fi case " $deplibs" in *\ -l* | *\ -L*) func_warning "'-l' and '-L' are ignored for archives" ;; esac test -n "$rpath" && \ func_warning "'-rpath' is ignored for archives" test -n "$xrpath" && \ func_warning "'-R' is ignored for archives" test -n "$vinfo" && \ func_warning "'-version-info/-version-number' is ignored for archives" test -n "$release" && \ func_warning "'-release' is ignored for archives" test -n "$export_symbols$export_symbols_regex" && \ func_warning "'-export-symbols' is ignored for archives" # Now set the variables for building old libraries. build_libtool_libs=no oldlibs=$output func_append objs "$old_deplibs" ;; lib) # Make sure we only generate libraries of the form 'libNAME.la'. case $outputname in lib*) func_stripname 'lib' '.la' "$outputname" name=$func_stripname_result eval shared_ext=\"$shrext_cmds\" eval libname=\"$libname_spec\" ;; *) test no = "$module" \ && func_fatal_help "libtool library '$output' must begin with 'lib'" if test no != "$need_lib_prefix"; then # Add the "lib" prefix for modules if required func_stripname '' '.la' "$outputname" name=$func_stripname_result eval shared_ext=\"$shrext_cmds\" eval libname=\"$libname_spec\" else func_stripname '' '.la' "$outputname" libname=$func_stripname_result fi ;; esac if test -n "$objs"; then if test pass_all != "$deplibs_check_method"; then func_fatal_error "cannot build libtool library '$output' from non-libtool objects on this host:$objs" else echo $ECHO "*** Warning: Linking the shared library $output against the non-libtool" $ECHO "*** objects $objs is not portable!" func_append libobjs " $objs" fi fi test no = "$dlself" \ || func_warning "'-dlopen self' is ignored for libtool libraries" set dummy $rpath shift test 1 -lt "$#" \ && func_warning "ignoring multiple '-rpath's for a libtool library" install_libdir=$1 oldlibs= if test -z "$rpath"; then if test yes = "$build_libtool_libs"; then # Building a libtool convenience library. # Some compilers have problems with a '.al' extension so # convenience libraries should have the same extension an # archive normally would. oldlibs="$output_objdir/$libname.$libext $oldlibs" build_libtool_libs=convenience build_old_libs=yes fi test -n "$vinfo" && \ func_warning "'-version-info/-version-number' is ignored for convenience libraries" test -n "$release" && \ func_warning "'-release' is ignored for convenience libraries" else # Parse the version information argument. save_ifs=$IFS; IFS=: set dummy $vinfo 0 0 0 shift IFS=$save_ifs test -n "$7" && \ func_fatal_help "too many parameters to '-version-info'" # convert absolute version numbers to libtool ages # this retains compatibility with .la files and attempts # to make the code below a bit more comprehensible case $vinfo_number in yes) number_major=$1 number_minor=$2 number_revision=$3 # # There are really only two kinds -- those that # use the current revision as the major version # and those that subtract age and use age as # a minor version. But, then there is irix # that has an extra 1 added just for fun # case $version_type in # correct linux to gnu/linux during the next big refactor darwin|freebsd-elf|linux|midnightbsd-elf|osf|windows|none) func_arith $number_major + $number_minor current=$func_arith_result age=$number_minor revision=$number_revision ;; freebsd-aout|qnx|sunos) current=$number_major revision=$number_minor age=0 ;; irix|nonstopux) func_arith $number_major + $number_minor current=$func_arith_result age=$number_minor revision=$number_minor lt_irix_increment=no ;; esac ;; no) current=$1 revision=$2 age=$3 ;; esac # Check that each of the things are valid numbers. case $current in 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;; *) func_error "CURRENT '$current' must be a nonnegative integer" func_fatal_error "'$vinfo' is not valid version information" ;; esac case $revision in 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;; *) func_error "REVISION '$revision' must be a nonnegative integer" func_fatal_error "'$vinfo' is not valid version information" ;; esac case $age in 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;; *) func_error "AGE '$age' must be a nonnegative integer" func_fatal_error "'$vinfo' is not valid version information" ;; esac if test "$age" -gt "$current"; then func_error "AGE '$age' is greater than the current interface number '$current'" func_fatal_error "'$vinfo' is not valid version information" fi # Calculate the version variables. major= versuffix= verstring= case $version_type in none) ;; darwin) # Like Linux, but with the current version available in # verstring for coding it into the library header func_arith $current - $age major=.$func_arith_result versuffix=$major.$age.$revision # Darwin ld doesn't like 0 for these options... func_arith $current + 1 minor_current=$func_arith_result xlcverstring="$wl-compatibility_version $wl$minor_current $wl-current_version $wl$minor_current.$revision" verstring="-compatibility_version $minor_current -current_version $minor_current.$revision" # On Darwin other compilers case $CC in nagfor*) verstring="$wl-compatibility_version $wl$minor_current $wl-current_version $wl$minor_current.$revision" ;; *) verstring="-compatibility_version $minor_current -current_version $minor_current.$revision" ;; esac ;; freebsd-aout) major=.$current versuffix=.$current.$revision ;; freebsd-elf | midnightbsd-elf) func_arith $current - $age major=.$func_arith_result versuffix=$major.$age.$revision ;; irix | nonstopux) if test no = "$lt_irix_increment"; then func_arith $current - $age else func_arith $current - $age + 1 fi major=$func_arith_result case $version_type in nonstopux) verstring_prefix=nonstopux ;; *) verstring_prefix=sgi ;; esac verstring=$verstring_prefix$major.$revision # Add in all the interfaces that we are compatible with. loop=$revision while test 0 -ne "$loop"; do func_arith $revision - $loop iface=$func_arith_result func_arith $loop - 1 loop=$func_arith_result verstring=$verstring_prefix$major.$iface:$verstring done # Before this point, $major must not contain '.'. major=.$major versuffix=$major.$revision ;; linux) # correct to gnu/linux during the next big refactor func_arith $current - $age major=.$func_arith_result versuffix=$major.$age.$revision ;; osf) func_arith $current - $age major=.$func_arith_result versuffix=.$current.$age.$revision verstring=$current.$age.$revision # Add in all the interfaces that we are compatible with. loop=$age while test 0 -ne "$loop"; do func_arith $current - $loop iface=$func_arith_result func_arith $loop - 1 loop=$func_arith_result verstring=$verstring:$iface.0 done # Make executables depend on our current version. func_append verstring ":$current.0" ;; qnx) major=.$current versuffix=.$current ;; sco) major=.$current versuffix=.$current ;; sunos) major=.$current versuffix=.$current.$revision ;; windows) # Use '-' rather than '.', since we only want one # extension on DOS 8.3 file systems. func_arith $current - $age major=$func_arith_result versuffix=-$major ;; *) func_fatal_configuration "unknown library version type '$version_type'" ;; esac # Clear the version info if we defaulted, and they specified a release. if test -z "$vinfo" && test -n "$release"; then major= case $version_type in darwin) # we can't check for "0.0" in archive_cmds due to quoting # problems, so we reset it completely verstring= ;; *) verstring=0.0 ;; esac if test no = "$need_version"; then versuffix= else versuffix=.0.0 fi fi # Remove version info from name if versioning should be avoided if test yes,no = "$avoid_version,$need_version"; then major= versuffix= verstring= fi # Check to see if the archive will have undefined symbols. if test yes = "$allow_undefined"; then if test unsupported = "$allow_undefined_flag"; then if test yes = "$build_old_libs"; then func_warning "undefined symbols not allowed in $host shared libraries; building static only" build_libtool_libs=no else func_fatal_error "can't build $host shared library unless -no-undefined is specified" fi fi else # Don't allow undefined symbols. allow_undefined_flag=$no_undefined_flag fi fi func_generate_dlsyms "$libname" "$libname" : func_append libobjs " $symfileobj" test " " = "$libobjs" && libobjs= if test relink != "$opt_mode"; then # Remove our outputs, but don't remove object files since they # may have been created when compiling PIC objects. removelist= tempremovelist=`$ECHO "$output_objdir/*"` for p in $tempremovelist; do case $p in *.$objext | *.gcno) ;; $output_objdir/$outputname | $output_objdir/$libname.* | $output_objdir/$libname$release.*) if test -n "$precious_files_regex"; then if $ECHO "$p" | $EGREP -e "$precious_files_regex" >/dev/null 2>&1 then continue fi fi func_append removelist " $p" ;; *) ;; esac done test -n "$removelist" && \ func_show_eval "${RM}r \$removelist" fi # Now set the variables for building old libraries. if test yes = "$build_old_libs" && test convenience != "$build_libtool_libs"; then func_append oldlibs " $output_objdir/$libname.$libext" # Transform .lo files to .o files. oldobjs="$objs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.$libext$/d; $lo2o" | $NL2SP` fi # Eliminate all temporary directories. #for path in $notinst_path; do # lib_search_path=`$ECHO "$lib_search_path " | $SED "s% $path % %g"` # deplibs=`$ECHO "$deplibs " | $SED "s% -L$path % %g"` # dependency_libs=`$ECHO "$dependency_libs " | $SED "s% -L$path % %g"` #done if test -n "$xrpath"; then # If the user specified any rpath flags, then add them. temp_xrpath= for libdir in $xrpath; do func_replace_sysroot "$libdir" func_append temp_xrpath " -R$func_replace_sysroot_result" case "$finalize_rpath " in *" $libdir "*) ;; *) func_append finalize_rpath " $libdir" ;; esac done if test yes != "$hardcode_into_libs" || test yes = "$build_old_libs"; then dependency_libs="$temp_xrpath $dependency_libs" fi fi # Make sure dlfiles contains only unique files that won't be dlpreopened old_dlfiles=$dlfiles dlfiles= for lib in $old_dlfiles; do case " $dlprefiles $dlfiles " in *" $lib "*) ;; *) func_append dlfiles " $lib" ;; esac done # Make sure dlprefiles contains only unique files old_dlprefiles=$dlprefiles dlprefiles= for lib in $old_dlprefiles; do case "$dlprefiles " in *" $lib "*) ;; *) func_append dlprefiles " $lib" ;; esac done if test yes = "$build_libtool_libs"; then if test -n "$rpath"; then case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc* | *-*-haiku*) # these systems don't actually have a c library (as such)! ;; *-*-rhapsody* | *-*-darwin1.[012]) # Rhapsody C library is in the System framework func_append deplibs " System.ltframework" ;; *-*-netbsd*) # Don't link with libc until the a.out ld.so is fixed. ;; *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-midnightbsd*) # Do not include libc due to us having libc/libc_r. ;; *-*-sco3.2v5* | *-*-sco5v6*) # Causes problems with __ctype ;; *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*) # Compiler inserts libc in the correct place for threads to work ;; *) # Add libc to deplibs on all other systems if necessary. if test yes = "$build_libtool_need_lc"; then func_append deplibs " -lc" fi ;; esac fi # Transform deplibs into only deplibs that can be linked in shared. name_save=$name libname_save=$libname release_save=$release versuffix_save=$versuffix major_save=$major # I'm not sure if I'm treating the release correctly. I think # release should show up in the -l (ie -lgmp5) so we don't want to # add it in twice. Is that correct? release= versuffix= major= newdeplibs= droppeddeps=no case $deplibs_check_method in pass_all) # Don't check for shared/static. Everything works. # This might be a little naive. We might want to check # whether the library exists or not. But this is on # osf3 & osf4 and I'm not really sure... Just # implementing what was already the behavior. newdeplibs=$deplibs ;; test_compile) # This code stresses the "libraries are programs" paradigm to its # limits. Maybe even breaks it. We compile a program, linking it # against the deplibs as a proxy for the library. Then we can check # whether they linked in statically or dynamically with ldd. $opt_dry_run || $RM conftest.c cat > conftest.c </dev/null` $nocaseglob else potential_libs=`ls $i/$libnameglob[.-]* 2>/dev/null` fi for potent_lib in $potential_libs; do # Follow soft links. if ls -lLd "$potent_lib" 2>/dev/null | $GREP " -> " >/dev/null; then continue fi # The statement above tries to avoid entering an # endless loop below, in case of cyclic links. # We might still enter an endless loop, since a link # loop can be closed while we follow links, # but so what? potlib=$potent_lib while test -h "$potlib" 2>/dev/null; do potliblink=`ls -ld $potlib | $SED 's/.* -> //'` case $potliblink in [\\/]* | [A-Za-z]:[\\/]*) potlib=$potliblink;; *) potlib=`$ECHO "$potlib" | $SED 's|[^/]*$||'`"$potliblink";; esac done if eval $file_magic_cmd \"\$potlib\" 2>/dev/null | $SED -e 10q | $EGREP "$file_magic_regex" > /dev/null; then func_append newdeplibs " $a_deplib" a_deplib= break 2 fi done done fi if test -n "$a_deplib"; then droppeddeps=yes echo $ECHO "*** Warning: linker path does not have real file for library $a_deplib." echo "*** I have the capability to make that library automatically link in when" echo "*** you link to this library. But I can only do this if you have a" echo "*** shared version of the library, which you do not appear to have" echo "*** because I did check the linker path looking for a file starting" if test -z "$potlib"; then $ECHO "*** with $libname but no candidates were found. (...for file magic test)" else $ECHO "*** with $libname and none of the candidates passed a file format test" $ECHO "*** using a file magic. Last file checked: $potlib" fi fi ;; *) # Add a -L argument. func_append newdeplibs " $a_deplib" ;; esac done # Gone through all deplibs. ;; match_pattern*) set dummy $deplibs_check_method; shift match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"` for a_deplib in $deplibs; do case $a_deplib in -l*) func_stripname -l '' "$a_deplib" name=$func_stripname_result if test yes = "$allow_libtool_libs_with_static_runtimes"; then case " $predeps $postdeps " in *" $a_deplib "*) func_append newdeplibs " $a_deplib" a_deplib= ;; esac fi if test -n "$a_deplib"; then libname=`eval "\\$ECHO \"$libname_spec\""` for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do potential_libs=`ls $i/$libname[.-]* 2>/dev/null` for potent_lib in $potential_libs; do potlib=$potent_lib # see symlink-check above in file_magic test if eval "\$ECHO \"$potent_lib\"" 2>/dev/null | $SED 10q | \ $EGREP "$match_pattern_regex" > /dev/null; then func_append newdeplibs " $a_deplib" a_deplib= break 2 fi done done fi if test -n "$a_deplib"; then droppeddeps=yes echo $ECHO "*** Warning: linker path does not have real file for library $a_deplib." echo "*** I have the capability to make that library automatically link in when" echo "*** you link to this library. But I can only do this if you have a" echo "*** shared version of the library, which you do not appear to have" echo "*** because I did check the linker path looking for a file starting" if test -z "$potlib"; then $ECHO "*** with $libname but no candidates were found. (...for regex pattern test)" else $ECHO "*** with $libname and none of the candidates passed a file format test" $ECHO "*** using a regex pattern. Last file checked: $potlib" fi fi ;; *) # Add a -L argument. func_append newdeplibs " $a_deplib" ;; esac done # Gone through all deplibs. ;; none | unknown | *) newdeplibs= tmp_deplibs=`$ECHO " $deplibs" | $SED 's/ -lc$//; s/ -[LR][^ ]*//g'` if test yes = "$allow_libtool_libs_with_static_runtimes"; then for i in $predeps $postdeps; do # can't use Xsed below, because $i might contain '/' tmp_deplibs=`$ECHO " $tmp_deplibs" | $SED "s|$i||"` done fi case $tmp_deplibs in *[!\ \ ]*) echo if test none = "$deplibs_check_method"; then echo "*** Warning: inter-library dependencies are not supported in this platform." else echo "*** Warning: inter-library dependencies are not known to be supported." fi echo "*** All declared inter-library dependencies are being dropped." droppeddeps=yes ;; esac ;; esac versuffix=$versuffix_save major=$major_save release=$release_save libname=$libname_save name=$name_save case $host in *-*-rhapsody* | *-*-darwin1.[012]) # On Rhapsody replace the C library with the System framework newdeplibs=`$ECHO " $newdeplibs" | $SED 's/ -lc / System.ltframework /'` ;; esac if test yes = "$droppeddeps"; then if test yes = "$module"; then echo echo "*** Warning: libtool could not satisfy all declared inter-library" $ECHO "*** dependencies of module $libname. Therefore, libtool will create" echo "*** a static module, that should work as long as the dlopening" echo "*** application is linked with the -dlopen flag." if test -z "$global_symbol_pipe"; then echo echo "*** However, this would only work if libtool was able to extract symbol" echo "*** lists from a program, using 'nm' or equivalent, but libtool could" echo "*** not find such a program. So, this module is probably useless." echo "*** 'nm' from GNU binutils and a full rebuild may help." fi if test no = "$build_old_libs"; then oldlibs=$output_objdir/$libname.$libext build_libtool_libs=module build_old_libs=yes else build_libtool_libs=no fi else echo "*** The inter-library dependencies that have been dropped here will be" echo "*** automatically added whenever a program is linked with this library" echo "*** or is declared to -dlopen it." if test no = "$allow_undefined"; then echo echo "*** Since this library must not contain undefined symbols," echo "*** because either the platform does not support them or" echo "*** it was explicitly requested with -no-undefined," echo "*** libtool will only create a static version of it." if test no = "$build_old_libs"; then oldlibs=$output_objdir/$libname.$libext build_libtool_libs=module build_old_libs=yes else build_libtool_libs=no fi fi fi fi # Done checking deplibs! deplibs=$newdeplibs fi # Time to change all our "foo.ltframework" stuff back to "-framework foo" case $host in *-*-darwin*) newdeplibs=`$ECHO " $newdeplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` new_inherited_linker_flags=`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` deplibs=`$ECHO " $deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` ;; esac # move library search paths that coincide with paths to not yet # installed libraries to the beginning of the library search list new_libs= for path in $notinst_path; do case " $new_libs " in *" -L$path/$objdir "*) ;; *) case " $deplibs " in *" -L$path/$objdir "*) func_append new_libs " -L$path/$objdir" ;; esac ;; esac done for deplib in $deplibs; do case $deplib in -L*) case " $new_libs " in *" $deplib "*) ;; *) func_append new_libs " $deplib" ;; esac ;; *) func_append new_libs " $deplib" ;; esac done deplibs=$new_libs # All the library-specific variables (install_libdir is set above). library_names= old_library= dlname= # Test again, we may have decided not to build it any more if test yes = "$build_libtool_libs"; then # Remove $wl instances when linking with ld. # FIXME: should test the right _cmds variable. case $archive_cmds in *\$LD\ *) wl= ;; esac if test yes = "$hardcode_into_libs"; then # Hardcode the library paths hardcode_libdirs= dep_rpath= rpath=$finalize_rpath test relink = "$opt_mode" || rpath=$compile_rpath$rpath for libdir in $rpath; do if test -n "$hardcode_libdir_flag_spec"; then if test -n "$hardcode_libdir_separator"; then func_replace_sysroot "$libdir" libdir=$func_replace_sysroot_result if test -z "$hardcode_libdirs"; then hardcode_libdirs=$libdir else # Just accumulate the unique libdirs. case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) ;; *) func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" ;; esac fi else eval flag=\"$hardcode_libdir_flag_spec\" func_append dep_rpath " $flag" fi elif test -n "$runpath_var"; then case "$perm_rpath " in *" $libdir "*) ;; *) func_append perm_rpath " $libdir" ;; esac fi done # Substitute the hardcoded libdirs into the rpath. if test -n "$hardcode_libdir_separator" && test -n "$hardcode_libdirs"; then libdir=$hardcode_libdirs eval "dep_rpath=\"$hardcode_libdir_flag_spec\"" fi if test -n "$runpath_var" && test -n "$perm_rpath"; then # We should set the runpath_var. rpath= for dir in $perm_rpath; do func_append rpath "$dir:" done eval "$runpath_var='$rpath\$$runpath_var'; export $runpath_var" fi test -n "$dep_rpath" && deplibs="$dep_rpath $deplibs" fi shlibpath=$finalize_shlibpath test relink = "$opt_mode" || shlibpath=$compile_shlibpath$shlibpath if test -n "$shlibpath"; then eval "$shlibpath_var='$shlibpath\$$shlibpath_var'; export $shlibpath_var" fi # Get the real and link names of the library. eval shared_ext=\"$shrext_cmds\" eval library_names=\"$library_names_spec\" set dummy $library_names shift realname=$1 shift if test -n "$soname_spec"; then eval soname=\"$soname_spec\" else soname=$realname fi if test -z "$dlname"; then dlname=$soname fi lib=$output_objdir/$realname linknames= for link do func_append linknames " $link" done # Use standard objects if they are pic test -z "$pic_flag" && libobjs=`$ECHO "$libobjs" | $SP2NL | $SED "$lo2o" | $NL2SP` test "X$libobjs" = "X " && libobjs= delfiles= if test -n "$export_symbols" && test -n "$include_expsyms"; then $opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp" export_symbols=$output_objdir/$libname.uexp func_append delfiles " $export_symbols" fi orig_export_symbols= case $host_os in cygwin* | mingw* | cegcc*) if test -n "$export_symbols" && test -z "$export_symbols_regex"; then # exporting using user supplied symfile func_dll_def_p "$export_symbols" || { # and it's NOT already a .def file. Must figure out # which of the given symbols are data symbols and tag # them as such. So, trigger use of export_symbols_cmds. # export_symbols gets reassigned inside the "prepare # the list of exported symbols" if statement, so the # include_expsyms logic still works. orig_export_symbols=$export_symbols export_symbols= always_export_symbols=yes } fi ;; esac # Prepare the list of exported symbols if test -z "$export_symbols"; then if test yes = "$always_export_symbols" || test -n "$export_symbols_regex"; then func_verbose "generating symbol list for '$libname.la'" export_symbols=$output_objdir/$libname.exp $opt_dry_run || $RM $export_symbols cmds=$export_symbols_cmds save_ifs=$IFS; IFS='~' for cmd1 in $cmds; do IFS=$save_ifs # Take the normal branch if the nm_file_list_spec branch # doesn't work or if tool conversion is not needed. case $nm_file_list_spec~$to_tool_file_cmd in *~func_convert_file_noop | *~func_convert_file_msys_to_w32 | ~*) try_normal_branch=yes eval cmd=\"$cmd1\" func_len " $cmd" len=$func_len_result ;; *) try_normal_branch=no ;; esac if test yes = "$try_normal_branch" \ && { test "$len" -lt "$max_cmd_len" \ || test "$max_cmd_len" -le -1; } then func_show_eval "$cmd" 'exit $?' skipped_export=false elif test -n "$nm_file_list_spec"; then func_basename "$output" output_la=$func_basename_result save_libobjs=$libobjs save_output=$output output=$output_objdir/$output_la.nm func_to_tool_file "$output" libobjs=$nm_file_list_spec$func_to_tool_file_result func_append delfiles " $output" func_verbose "creating $NM input file list: $output" for obj in $save_libobjs; do func_to_tool_file "$obj" $ECHO "$func_to_tool_file_result" done > "$output" eval cmd=\"$cmd1\" func_show_eval "$cmd" 'exit $?' output=$save_output libobjs=$save_libobjs skipped_export=false else # The command line is too long to execute in one step. func_verbose "using reloadable object file for export list..." skipped_export=: # Break out early, otherwise skipped_export may be # set to false by a later but shorter cmd. break fi done IFS=$save_ifs if test -n "$export_symbols_regex" && test : != "$skipped_export"; then func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"' func_show_eval '$MV "${export_symbols}T" "$export_symbols"' fi fi fi if test -n "$export_symbols" && test -n "$include_expsyms"; then tmp_export_symbols=$export_symbols test -n "$orig_export_symbols" && tmp_export_symbols=$orig_export_symbols $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"' fi if test : != "$skipped_export" && test -n "$orig_export_symbols"; then # The given exports_symbols file has to be filtered, so filter it. func_verbose "filter symbol list for '$libname.la' to tag DATA exports" # FIXME: $output_objdir/$libname.filter potentially contains lots of # 's' commands, which not all seds can handle. GNU sed should be fine # though. Also, the filter scales superlinearly with the number of # global variables. join(1) would be nice here, but unfortunately # isn't a blessed tool. $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter func_append delfiles " $export_symbols $output_objdir/$libname.filter" export_symbols=$output_objdir/$libname.def $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols fi tmp_deplibs= for test_deplib in $deplibs; do case " $convenience " in *" $test_deplib "*) ;; *) func_append tmp_deplibs " $test_deplib" ;; esac done deplibs=$tmp_deplibs if test -n "$convenience"; then if test -n "$whole_archive_flag_spec" && test yes = "$compiler_needs_object" && test -z "$libobjs"; then # extract the archives, so we have objects to list. # TODO: could optimize this to just extract one archive. whole_archive_flag_spec= fi if test -n "$whole_archive_flag_spec"; then save_libobjs=$libobjs eval libobjs=\"\$libobjs $whole_archive_flag_spec\" test "X$libobjs" = "X " && libobjs= else gentop=$output_objdir/${outputname}x func_append generated " $gentop" func_extract_archives $gentop $convenience func_append libobjs " $func_extract_archives_result" test "X$libobjs" = "X " && libobjs= fi fi if test yes = "$thread_safe" && test -n "$thread_safe_flag_spec"; then eval flag=\"$thread_safe_flag_spec\" func_append linker_flags " $flag" fi # Make a backup of the uninstalled library when relinking if test relink = "$opt_mode"; then $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}U && $MV $realname ${realname}U)' || exit $? fi # Do each of the archive commands. if test yes = "$module" && test -n "$module_cmds"; then if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then eval test_cmds=\"$module_expsym_cmds\" cmds=$module_expsym_cmds else eval test_cmds=\"$module_cmds\" cmds=$module_cmds fi else if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then eval test_cmds=\"$archive_expsym_cmds\" cmds=$archive_expsym_cmds else eval test_cmds=\"$archive_cmds\" cmds=$archive_cmds fi fi if test : != "$skipped_export" && func_len " $test_cmds" && len=$func_len_result && test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then : else # The command line is too long to link in one step, link piecewise # or, if using GNU ld and skipped_export is not :, use a linker # script. # Save the value of $output and $libobjs because we want to # use them later. If we have whole_archive_flag_spec, we # want to use save_libobjs as it was before # whole_archive_flag_spec was expanded, because we can't # assume the linker understands whole_archive_flag_spec. # This may have to be revisited, in case too many # convenience libraries get linked in and end up exceeding # the spec. if test -z "$convenience" || test -z "$whole_archive_flag_spec"; then save_libobjs=$libobjs fi save_output=$output func_basename "$output" output_la=$func_basename_result # Clear the reloadable object creation command queue and # initialize k to one. test_cmds= concat_cmds= objlist= last_robj= k=1 if test -n "$save_libobjs" && test : != "$skipped_export" && test yes = "$with_gnu_ld"; then output=$output_objdir/$output_la.lnkscript func_verbose "creating GNU ld script: $output" echo 'INPUT (' > $output for obj in $save_libobjs do func_to_tool_file "$obj" $ECHO "$func_to_tool_file_result" >> $output done echo ')' >> $output func_append delfiles " $output" func_to_tool_file "$output" output=$func_to_tool_file_result elif test -n "$save_libobjs" && test : != "$skipped_export" && test -n "$file_list_spec"; then output=$output_objdir/$output_la.lnk func_verbose "creating linker input file list: $output" : > $output set x $save_libobjs shift firstobj= if test yes = "$compiler_needs_object"; then firstobj="$1 " shift fi for obj do func_to_tool_file "$obj" $ECHO "$func_to_tool_file_result" >> $output done func_append delfiles " $output" func_to_tool_file "$output" output=$firstobj\"$file_list_spec$func_to_tool_file_result\" else if test -n "$save_libobjs"; then func_verbose "creating reloadable object files..." output=$output_objdir/$output_la-$k.$objext eval test_cmds=\"$reload_cmds\" func_len " $test_cmds" len0=$func_len_result len=$len0 # Loop over the list of objects to be linked. for obj in $save_libobjs do func_len " $obj" func_arith $len + $func_len_result len=$func_arith_result if test -z "$objlist" || test "$len" -lt "$max_cmd_len"; then func_append objlist " $obj" else # The command $test_cmds is almost too long, add a # command to the queue. if test 1 -eq "$k"; then # The first file doesn't have a previous command to add. reload_objs=$objlist eval concat_cmds=\"$reload_cmds\" else # All subsequent reloadable object files will link in # the last one created. reload_objs="$objlist $last_robj" eval concat_cmds=\"\$concat_cmds~$reload_cmds~\$RM $last_robj\" fi last_robj=$output_objdir/$output_la-$k.$objext func_arith $k + 1 k=$func_arith_result output=$output_objdir/$output_la-$k.$objext objlist=" $obj" func_len " $last_robj" func_arith $len0 + $func_len_result len=$func_arith_result fi done # Handle the remaining objects by creating one last # reloadable object file. All subsequent reloadable object # files will link in the last one created. test -z "$concat_cmds" || concat_cmds=$concat_cmds~ reload_objs="$objlist $last_robj" eval concat_cmds=\"\$concat_cmds$reload_cmds\" if test -n "$last_robj"; then eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\" fi func_append delfiles " $output" else output= fi ${skipped_export-false} && { func_verbose "generating symbol list for '$libname.la'" export_symbols=$output_objdir/$libname.exp $opt_dry_run || $RM $export_symbols libobjs=$output # Append the command to create the export file. test -z "$concat_cmds" || concat_cmds=$concat_cmds~ eval concat_cmds=\"\$concat_cmds$export_symbols_cmds\" if test -n "$last_robj"; then eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\" fi } test -n "$save_libobjs" && func_verbose "creating a temporary reloadable object file: $output" # Loop through the commands generated above and execute them. save_ifs=$IFS; IFS='~' for cmd in $concat_cmds; do IFS=$save_ifs $opt_quiet || { func_quote_arg expand,pretty "$cmd" eval "func_echo $func_quote_arg_result" } $opt_dry_run || eval "$cmd" || { lt_exit=$? # Restore the uninstalled library and exit if test relink = "$opt_mode"; then ( cd "$output_objdir" && \ $RM "${realname}T" && \ $MV "${realname}U" "$realname" ) fi exit $lt_exit } done IFS=$save_ifs if test -n "$export_symbols_regex" && ${skipped_export-false}; then func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"' func_show_eval '$MV "${export_symbols}T" "$export_symbols"' fi fi ${skipped_export-false} && { if test -n "$export_symbols" && test -n "$include_expsyms"; then tmp_export_symbols=$export_symbols test -n "$orig_export_symbols" && tmp_export_symbols=$orig_export_symbols $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"' fi if test -n "$orig_export_symbols"; then # The given exports_symbols file has to be filtered, so filter it. func_verbose "filter symbol list for '$libname.la' to tag DATA exports" # FIXME: $output_objdir/$libname.filter potentially contains lots of # 's' commands, which not all seds can handle. GNU sed should be fine # though. Also, the filter scales superlinearly with the number of # global variables. join(1) would be nice here, but unfortunately # isn't a blessed tool. $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter func_append delfiles " $export_symbols $output_objdir/$libname.filter" export_symbols=$output_objdir/$libname.def $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols fi } libobjs=$output # Restore the value of output. output=$save_output if test -n "$convenience" && test -n "$whole_archive_flag_spec"; then eval libobjs=\"\$libobjs $whole_archive_flag_spec\" test "X$libobjs" = "X " && libobjs= fi # Expand the library linking commands again to reset the # value of $libobjs for piecewise linking. # Do each of the archive commands. if test yes = "$module" && test -n "$module_cmds"; then if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then cmds=$module_expsym_cmds else cmds=$module_cmds fi else if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then cmds=$archive_expsym_cmds else cmds=$archive_cmds fi fi fi if test -n "$delfiles"; then # Append the command to remove temporary files to $cmds. eval cmds=\"\$cmds~\$RM $delfiles\" fi # Add any objects from preloaded convenience libraries if test -n "$dlprefiles"; then gentop=$output_objdir/${outputname}x func_append generated " $gentop" func_extract_archives $gentop $dlprefiles func_append libobjs " $func_extract_archives_result" test "X$libobjs" = "X " && libobjs= fi save_ifs=$IFS; IFS='~' for cmd in $cmds; do IFS=$sp$nl eval cmd=\"$cmd\" IFS=$save_ifs $opt_quiet || { func_quote_arg expand,pretty "$cmd" eval "func_echo $func_quote_arg_result" } $opt_dry_run || eval "$cmd" || { lt_exit=$? # Restore the uninstalled library and exit if test relink = "$opt_mode"; then ( cd "$output_objdir" && \ $RM "${realname}T" && \ $MV "${realname}U" "$realname" ) fi exit $lt_exit } done IFS=$save_ifs # Restore the uninstalled library and exit if test relink = "$opt_mode"; then $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname)' || exit $? if test -n "$convenience"; then if test -z "$whole_archive_flag_spec"; then func_show_eval '${RM}r "$gentop"' fi fi exit $EXIT_SUCCESS fi # Create links to the real library. for linkname in $linknames; do if test "$realname" != "$linkname"; then func_show_eval '(cd "$output_objdir" && $RM "$linkname" && $LN_S "$realname" "$linkname")' 'exit $?' fi done # If -module or -export-dynamic was specified, set the dlname. if test yes = "$module" || test yes = "$export_dynamic"; then # On all known operating systems, these are identical. dlname=$soname fi fi ;; obj) if test -n "$dlfiles$dlprefiles" || test no != "$dlself"; then func_warning "'-dlopen' is ignored for objects" fi case " $deplibs" in *\ -l* | *\ -L*) func_warning "'-l' and '-L' are ignored for objects" ;; esac test -n "$rpath" && \ func_warning "'-rpath' is ignored for objects" test -n "$xrpath" && \ func_warning "'-R' is ignored for objects" test -n "$vinfo" && \ func_warning "'-version-info' is ignored for objects" test -n "$release" && \ func_warning "'-release' is ignored for objects" case $output in *.lo) test -n "$objs$old_deplibs" && \ func_fatal_error "cannot build library object '$output' from non-libtool objects" libobj=$output func_lo2o "$libobj" obj=$func_lo2o_result ;; *) libobj= obj=$output ;; esac # Delete the old objects. $opt_dry_run || $RM $obj $libobj # Objects from convenience libraries. This assumes # single-version convenience libraries. Whenever we create # different ones for PIC/non-PIC, this we'll have to duplicate # the extraction. reload_conv_objs= gentop= # if reload_cmds runs $LD directly, get rid of -Wl from # whole_archive_flag_spec and hope we can get by with turning comma # into space. case $reload_cmds in *\$LD[\ \$]*) wl= ;; esac if test -n "$convenience"; then if test -n "$whole_archive_flag_spec"; then eval tmp_whole_archive_flags=\"$whole_archive_flag_spec\" test -n "$wl" || tmp_whole_archive_flags=`$ECHO "$tmp_whole_archive_flags" | $SED 's|,| |g'` reload_conv_objs=$reload_objs\ $tmp_whole_archive_flags else gentop=$output_objdir/${obj}x func_append generated " $gentop" func_extract_archives $gentop $convenience reload_conv_objs="$reload_objs $func_extract_archives_result" fi fi # If we're not building shared, we need to use non_pic_objs test yes = "$build_libtool_libs" || libobjs=$non_pic_objects # Create the old-style object. reload_objs=$objs$old_deplibs' '`$ECHO "$libobjs" | $SP2NL | $SED "/\.$libext$/d; /\.lib$/d; $lo2o" | $NL2SP`' '$reload_conv_objs output=$obj func_execute_cmds "$reload_cmds" 'exit $?' # Exit if we aren't doing a library object file. if test -z "$libobj"; then if test -n "$gentop"; then func_show_eval '${RM}r "$gentop"' fi exit $EXIT_SUCCESS fi test yes = "$build_libtool_libs" || { if test -n "$gentop"; then func_show_eval '${RM}r "$gentop"' fi # Create an invalid libtool object if no PIC, so that we don't # accidentally link it into a program. # $show "echo timestamp > $libobj" # $opt_dry_run || eval "echo timestamp > $libobj" || exit $? exit $EXIT_SUCCESS } if test -n "$pic_flag" || test default != "$pic_mode"; then # Only do commands if we really have different PIC objects. reload_objs="$libobjs $reload_conv_objs" output=$libobj func_execute_cmds "$reload_cmds" 'exit $?' fi if test -n "$gentop"; then func_show_eval '${RM}r "$gentop"' fi exit $EXIT_SUCCESS ;; prog) case $host in *cygwin*) func_stripname '' '.exe' "$output" output=$func_stripname_result.exe;; esac test -n "$vinfo" && \ func_warning "'-version-info' is ignored for programs" test -n "$release" && \ func_warning "'-release' is ignored for programs" $preload \ && test unknown,unknown,unknown = "$dlopen_support,$dlopen_self,$dlopen_self_static" \ && func_warning "'LT_INIT([dlopen])' not used. Assuming no dlopen support." case $host in *-*-rhapsody* | *-*-darwin1.[012]) # On Rhapsody replace the C library is the System framework compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's/ -lc / System.ltframework /'` finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's/ -lc / System.ltframework /'` ;; esac case $host in *-*-darwin*) # Don't allow lazy linking, it breaks C++ global constructors # But is supposedly fixed on 10.4 or later (yay!). if test CXX = "$tagname"; then case ${MACOSX_DEPLOYMENT_TARGET-10.0} in 10.[0123]) func_append compile_command " $wl-bind_at_load" func_append finalize_command " $wl-bind_at_load" ;; esac fi # Time to change all our "foo.ltframework" stuff back to "-framework foo" compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` ;; esac # move library search paths that coincide with paths to not yet # installed libraries to the beginning of the library search list new_libs= for path in $notinst_path; do case " $new_libs " in *" -L$path/$objdir "*) ;; *) case " $compile_deplibs " in *" -L$path/$objdir "*) func_append new_libs " -L$path/$objdir" ;; esac ;; esac done for deplib in $compile_deplibs; do case $deplib in -L*) case " $new_libs " in *" $deplib "*) ;; *) func_append new_libs " $deplib" ;; esac ;; *) func_append new_libs " $deplib" ;; esac done compile_deplibs=$new_libs func_append compile_command " $compile_deplibs" func_append finalize_command " $finalize_deplibs" if test -n "$rpath$xrpath"; then # If the user specified any rpath flags, then add them. for libdir in $rpath $xrpath; do # This is the magic to use -rpath. case "$finalize_rpath " in *" $libdir "*) ;; *) func_append finalize_rpath " $libdir" ;; esac done fi # Now hardcode the library paths rpath= hardcode_libdirs= for libdir in $compile_rpath $finalize_rpath; do if test -n "$hardcode_libdir_flag_spec"; then if test -n "$hardcode_libdir_separator"; then if test -z "$hardcode_libdirs"; then hardcode_libdirs=$libdir else # Just accumulate the unique libdirs. case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) ;; *) func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" ;; esac fi else eval flag=\"$hardcode_libdir_flag_spec\" func_append rpath " $flag" fi elif test -n "$runpath_var"; then case "$perm_rpath " in *" $libdir "*) ;; *) func_append perm_rpath " $libdir" ;; esac fi case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) testbindir=`$ECHO "$libdir" | $SED -e 's*/lib$*/bin*'` case :$dllsearchpath: in *":$libdir:"*) ;; ::) dllsearchpath=$libdir;; *) func_append dllsearchpath ":$libdir";; esac case :$dllsearchpath: in *":$testbindir:"*) ;; ::) dllsearchpath=$testbindir;; *) func_append dllsearchpath ":$testbindir";; esac ;; esac done # Substitute the hardcoded libdirs into the rpath. if test -n "$hardcode_libdir_separator" && test -n "$hardcode_libdirs"; then libdir=$hardcode_libdirs eval rpath=\" $hardcode_libdir_flag_spec\" fi compile_rpath=$rpath rpath= hardcode_libdirs= for libdir in $finalize_rpath; do if test -n "$hardcode_libdir_flag_spec"; then if test -n "$hardcode_libdir_separator"; then if test -z "$hardcode_libdirs"; then hardcode_libdirs=$libdir else # Just accumulate the unique libdirs. case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) ;; *) func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" ;; esac fi else eval flag=\"$hardcode_libdir_flag_spec\" func_append rpath " $flag" fi elif test -n "$runpath_var"; then case "$finalize_perm_rpath " in *" $libdir "*) ;; *) func_append finalize_perm_rpath " $libdir" ;; esac fi done # Substitute the hardcoded libdirs into the rpath. if test -n "$hardcode_libdir_separator" && test -n "$hardcode_libdirs"; then libdir=$hardcode_libdirs eval rpath=\" $hardcode_libdir_flag_spec\" fi finalize_rpath=$rpath if test -n "$libobjs" && test yes = "$build_old_libs"; then # Transform all the library objects into standard objects. compile_command=`$ECHO "$compile_command" | $SP2NL | $SED "$lo2o" | $NL2SP` finalize_command=`$ECHO "$finalize_command" | $SP2NL | $SED "$lo2o" | $NL2SP` fi func_generate_dlsyms "$outputname" "@PROGRAM@" false # template prelinking step if test -n "$prelink_cmds"; then func_execute_cmds "$prelink_cmds" 'exit $?' fi wrappers_required=: case $host in *cegcc* | *mingw32ce*) # Disable wrappers for cegcc and mingw32ce hosts, we are cross compiling anyway. wrappers_required=false ;; *cygwin* | *mingw* ) test yes = "$build_libtool_libs" || wrappers_required=false ;; *) if test no = "$need_relink" || test yes != "$build_libtool_libs"; then wrappers_required=false fi ;; esac $wrappers_required || { # Replace the output file specification. compile_command=`$ECHO "$compile_command" | $SED 's%@OUTPUT@%'"$output"'%g'` link_command=$compile_command$compile_rpath # We have no uninstalled library dependencies, so finalize right now. exit_status=0 func_show_eval "$link_command" 'exit_status=$?' if test -n "$postlink_cmds"; then func_to_tool_file "$output" postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` func_execute_cmds "$postlink_cmds" 'exit $?' fi # Delete the generated files. if test -f "$output_objdir/${outputname}S.$objext"; then func_show_eval '$RM "$output_objdir/${outputname}S.$objext"' fi exit $exit_status } if test -n "$compile_shlibpath$finalize_shlibpath"; then compile_command="$shlibpath_var=\"$compile_shlibpath$finalize_shlibpath\$$shlibpath_var\" $compile_command" fi if test -n "$finalize_shlibpath"; then finalize_command="$shlibpath_var=\"$finalize_shlibpath\$$shlibpath_var\" $finalize_command" fi compile_var= finalize_var= if test -n "$runpath_var"; then if test -n "$perm_rpath"; then # We should set the runpath_var. rpath= for dir in $perm_rpath; do func_append rpath "$dir:" done compile_var="$runpath_var=\"$rpath\$$runpath_var\" " fi if test -n "$finalize_perm_rpath"; then # We should set the runpath_var. rpath= for dir in $finalize_perm_rpath; do func_append rpath "$dir:" done finalize_var="$runpath_var=\"$rpath\$$runpath_var\" " fi fi if test yes = "$no_install"; then # We don't need to create a wrapper script. link_command=$compile_var$compile_command$compile_rpath # Replace the output file specification. link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output"'%g'` # Delete the old output file. $opt_dry_run || $RM $output # Link the executable and exit func_show_eval "$link_command" 'exit $?' if test -n "$postlink_cmds"; then func_to_tool_file "$output" postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` func_execute_cmds "$postlink_cmds" 'exit $?' fi exit $EXIT_SUCCESS fi case $hardcode_action,$fast_install in relink,*) # Fast installation is not supported link_command=$compile_var$compile_command$compile_rpath relink_command=$finalize_var$finalize_command$finalize_rpath func_warning "this platform does not like uninstalled shared libraries" func_warning "'$output' will be relinked during installation" ;; *,yes) link_command=$finalize_var$compile_command$finalize_rpath relink_command=`$ECHO "$compile_var$compile_command$compile_rpath" | $SED 's%@OUTPUT@%\$progdir/\$file%g'` ;; *,no) link_command=$compile_var$compile_command$compile_rpath relink_command=$finalize_var$finalize_command$finalize_rpath ;; *,needless) link_command=$finalize_var$compile_command$finalize_rpath relink_command= ;; esac # Replace the output file specification. link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output_objdir/$outputname"'%g'` # Delete the old output files. $opt_dry_run || $RM $output $output_objdir/$outputname $output_objdir/lt-$outputname func_show_eval "$link_command" 'exit $?' if test -n "$postlink_cmds"; 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and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA edition = "2021" max_width = 80 libnbd-1.20.3/SECURITY0000644000175000017500000000123314552714244007711 If you think you've found a serious or potential security bug that you don't want to report on a public mailing list, then send email to both and . Make it clear in the email Subject line that it's a serious or security-related bug in libnbd. You can also sign and/or encrypt messages using our GPG public keys available on the usual keyservers, or online here: https://download.libguestfs.org/libguestfs.keyring For information about past security issues, see docs/libnbd-security.pod, or the libnbd-security(1) man page if you have installed libnbd, also available online here: http://libguestfs.org/libnbd-security.3.html libnbd-1.20.3/generator/0000755000175000017500000000000014675532654010577 5libnbd-1.20.3/generator/Makefile.am0000644000175000017500000000720714540346632012547 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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@target_alias@ top_build_prefix = @top_build_prefix@ top_builddir = @top_builddir@ top_srcdir = @top_srcdir@ # Convenient list terminator NULL = CLEANFILES = *~ *.annot *.cmi *.cmo generator # In tests, include $(MALLOC_CHECKS) in TESTS_ENVIRONMENT to find some # use-after-free and uninitialized read problems when using glibc. # This doesn't affect other libc. random = $(shell bash -c 'echo $$(( 1 + (RANDOM & 255) ))') @HAVE_GLIBC_234_FALSE@MALLOC_CHECKS = \ @HAVE_GLIBC_234_FALSE@ MALLOC_CHECK_=1 \ @HAVE_GLIBC_234_FALSE@ MALLOC_PERTURB_=$(random) \ @HAVE_GLIBC_234_FALSE@ $(NULL) @HAVE_GLIBC_234_TRUE@MALLOC_CHECKS = \ @HAVE_GLIBC_234_TRUE@ LD_PRELOAD="$${LD_PRELOAD:+"$$LD_PRELOAD:"}libc_malloc_debug.so.0" \ @HAVE_GLIBC_234_TRUE@ GLIBC_TUNABLES=glibc.malloc.check=1:glibc.malloc.perturb=$(random) \ @HAVE_GLIBC_234_TRUE@ $(NULL) DISTCLEANFILES = stamp-generator # Note: These are not source files. 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\ fi; \ done check-am: all-am check: check-am all-am: Makefile installdirs: install: install-am install-exec: install-exec-am install-data: install-data-am uninstall: uninstall-am install-am: all-am @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am installcheck: installcheck-am install-strip: if test -z '$(STRIP)'; then \ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \ install; \ else \ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \ "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \ fi mostlyclean-generic: clean-generic: -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES) distclean-generic: -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES) -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES) -test -z "$(DISTCLEANFILES)" || rm -f $(DISTCLEANFILES) maintainer-clean-generic: @echo "This command is intended for maintainers to use" @echo "it deletes files that may require special tools to rebuild." clean: clean-am clean-am: clean-generic clean-libtool mostlyclean-am distclean: distclean-am -rm -f Makefile distclean-am: clean-am distclean-generic dvi: dvi-am dvi-am: html: html-am html-am: info: info-am info-am: install-data-am: install-dvi: install-dvi-am install-dvi-am: install-exec-am: install-html: install-html-am install-html-am: install-info: install-info-am install-info-am: install-man: install-pdf: install-pdf-am install-pdf-am: install-ps: install-ps-am install-ps-am: installcheck-am: maintainer-clean: maintainer-clean-am -rm -f Makefile maintainer-clean-am: distclean-am maintainer-clean-generic mostlyclean: mostlyclean-am mostlyclean-am: mostlyclean-generic mostlyclean-libtool pdf: pdf-am pdf-am: ps: ps-am ps-am: uninstall-am: .MAKE: install-am install-strip .PHONY: all all-am check check-am clean clean-generic clean-libtool \ cscopelist-am ctags-am distclean distclean-generic \ distclean-libtool distdir dvi dvi-am html html-am info info-am \ install install-am install-data install-data-am install-dvi \ install-dvi-am install-exec install-exec-am install-html \ install-html-am install-info install-info-am install-man \ install-pdf install-pdf-am install-ps install-ps-am \ install-strip installcheck installcheck-am installdirs \ maintainer-clean maintainer-clean-generic mostlyclean \ mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ tags-am uninstall uninstall-am .PRECIOUS: Makefile $(generator_built): $(top_builddir)/generator/stamp-generator $(top_builddir)/generator/stamp-generator: \ $(wildcard $(top_srcdir)/generator/*.ml) \ $(wildcard $(top_srcdir)/generator/*.mli) \ $(wildcard $(top_srcdir)/generator/states*.c) $(MAKE) -C $(top_builddir)/generator stamp-generator %.cmi: %.mli $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ %.cmo: %.ml $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ @HAVE_OCAMLOPT_TRUE@%.cmx: %.ml @HAVE_OCAMLOPT_TRUE@ $(OCAMLFIND) ocamlopt $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ $(top_builddir)/podwrapper.pl: $(top_srcdir)/podwrapper.pl.in $(MAKE) -C $(top_builddir) podwrapper.pl @HAVE_OCAMLC_TRUE@stamp-generator: generator $(states_code) $(examples_code) @HAVE_OCAMLC_TRUE@ rm -f $@ # We must run this from the source directory since these # files are distributed in the tarball. @HAVE_OCAMLC_TRUE@ cd $(top_srcdir) && \ @HAVE_OCAMLC_TRUE@ OCAMLRUNPARAM=b $(abs_top_builddir)/generator/generator @HAVE_OCAMLC_TRUE@ touch $@ @HAVE_OCAMLC_TRUE@generator: $(sources) @HAVE_OCAMLC_TRUE@ $(OCAMLC) $(OCAML_FLAGS) $(OCAML_WARN_ERROR) -I $(srcdir) -I . \ @HAVE_OCAMLC_TRUE@ -I +str str.cma -I +unix unix.cma $(sources) -o $@ @HAVE_OCAMLC_FALSE@stamp-generator: @HAVE_OCAMLC_FALSE@ @rm -f $@ @HAVE_OCAMLC_FALSE@ @if [ -f $(top_srcdir)/lib/states.c ]; then \ @HAVE_OCAMLC_FALSE@ echo "No ocamlc (OCaml bytecode compiler), skipping the generator."; \ @HAVE_OCAMLC_FALSE@ touch $@; \ @HAVE_OCAMLC_FALSE@ else \ @HAVE_OCAMLC_FALSE@ echo; \ @HAVE_OCAMLC_FALSE@ echo " *** *** ***"; \ @HAVE_OCAMLC_FALSE@ echo; \ @HAVE_OCAMLC_FALSE@ echo "Generated files are missing from your build."; \ @HAVE_OCAMLC_FALSE@ echo; \ @HAVE_OCAMLC_FALSE@ echo "Install the OCaml bytecode compiler (the program called ‘ocamlc’)"; \ @HAVE_OCAMLC_FALSE@ echo "and rerun ./configure && make"; \ @HAVE_OCAMLC_FALSE@ echo; \ @HAVE_OCAMLC_FALSE@ echo "OR build from the tarballs at https://download.libguestfs.org/libnbd/"; \ @HAVE_OCAMLC_FALSE@ echo "which include generated files."; \ @HAVE_OCAMLC_FALSE@ echo; \ @HAVE_OCAMLC_FALSE@ echo " *** *** ***"; \ @HAVE_OCAMLC_FALSE@ echo; \ @HAVE_OCAMLC_FALSE@ exit 1; \ @HAVE_OCAMLC_FALSE@ fi # Tell versions [3.59,3.63) of GNU make to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: libnbd-1.20.3/generator/config.ml.in0000644000175000017500000000177314525371754012727 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: utilities * Copyright Red Hat * @configure_input@ * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) let gofmt = match "@GOFMT@" with "" | "no" -> None | s -> Some s let rustfmt = match "@RUSTFMT@" with "" | "no" -> None | s -> Some s libnbd-1.20.3/generator/README.state-machine.md0000644000175000017500000000462114525371754014516 ## The state machine Each state has some associated C code which is called when the state is entered, or when the state is re-entered because of an external event. That code is in [generator/states*.c](states.c). Each handle starts in the top level START state. When you enter a state, the associated C code for that state runs. If the C code calls `SET_NEXT_STATE` and returns 0 then the connection enters the next state without blocking. If the C code calls `SET_NEXT_STATE_AND_BLOCK` and returns 0 then the connection blocks, but will resume with the code for the next state on the next external event. If the C code does *not* call either macro but returns 0, the state machine is blocked and will not be re-entered until an external event happens (see below), where the same C code will be executed again on re-entry. If the C code returns -1 after using `set_error()`, then the state machine blocks and the caller should report failure; the next external event will resume the state machine according to whether `SET_NEXT_STATE` was used. There are various end states such as `CLOSED` and `DEAD`. These are not special in relation to the above state transition rules, it's just that they have no way to move to another state. However, the `DEAD` state expects that `set_error()` was used in the previous state, and will return -1 itself after performing cleanup actions; the earlier state that wants to transition to `DEAD` should return 0 rather than -1, so as not to bypass this cleanup. An external event is something like the file descriptor being ready to read or write, or the main program calling a function such as `nbd_aio_connect`. Possible external events, and the next state resulting, are listed in the states table in [generator/state_machine.ml](state_machine.ml). An empty string `""` for an external event’s next state means the same state is re-entered. The same C code for the state will be run again. States can be grouped hierarchically. States can be referred to by an absolute path from the top level, such as `".DEAD"`, or by a relative path from the current level, such as `"CONNECT"` (another state at the same level), `"REPLY.START"` (a state in a sub-group), or `"^FINISH_COMMAND"` (a state in the level above the current one). When entering a group you must enter at the START state. When leaving a group and going to a higher level in the state tree there is no restriction on the next state. libnbd-1.20.3/generator/states.c0000644000175000017500000001316114525371754012164 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* This isn't "real" C code. It is read by the generator, parsed, and * put into generated files. Also it won't make much sense unless you * read the generator state machine and documentation in * generator/README.state-machine.md first. */ #include #include #include #include #include #include #include #include #include #include "minmax.h" #include "internal.h" /* Uncomment this to dump received protocol packets to stderr. */ /*#define DUMP_PACKETS 1*/ static int recv_into_rbuf (struct nbd_handle *h) { ssize_t r; void *rbuf; size_t rlen; /* As a special case h->rbuf is allowed to be NULL, meaning * throw away the data. * * When building with DUMP_PACKETS, it's worth debugging even * discarded packets; this makes our stack frame larger, but * DUMP_PACKETS is already for developers. Otherwise, we share a * single static sink buffer across all nbd handles; we don't care * about thread-safety issues with two clients discarding data at * the same time, because we never read the sink. */ #ifdef DUMP_PACKETS char sink[1024]; #else static char sink[BUFSIZ]; #endif if (h->rlen == 0) return 0; /* move to next state */ if (h->rbuf) { rbuf = h->rbuf; rlen = h->rlen; } else { rbuf = sink; rlen = MIN (h->rlen, sizeof sink); } r = h->sock->ops->recv (h, h->sock, rbuf, rlen); if (r == -1) { if (errno == EAGAIN || errno == EWOULDBLOCK) return 1; /* more data */ /* sock->ops->recv called set_error already. */ return -1; } if (r == 0) { set_error (0, "recv: server disconnected unexpectedly"); return -1; } #ifdef DUMP_PACKETS nbd_internal_hexdump (rbuf, r, stderr); #endif h->bytes_received += r; if (h->rbuf) h->rbuf = (char *)h->rbuf + r; h->rlen -= r; if (h->rlen == 0) return 0; /* move to next state */ else return 1; /* more data */ } static int send_from_wbuf (struct nbd_handle *h) { ssize_t r; if (h->wlen == 0) goto next_state; r = h->sock->ops->send (h, h->sock, h->wbuf, h->wlen, h->wflags); if (r == -1) { if (errno == EAGAIN || errno == EWOULDBLOCK) return 1; /* more data */ /* sock->ops->send called set_error already. */ return -1; } h->bytes_sent += r; h->wbuf = (char *)h->wbuf + r; h->wlen -= r; if (h->wlen == 0) goto next_state; else return 1; /* more data */ next_state: h->wflags = 0; /* reset this when moving to next state */ return 0; /* move to next state */ } /* Forcefully fail any in-flight option */ static void abort_option (struct nbd_handle *h) { int err = nbd_get_errno () ? : ENOTCONN; CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); } /* Forcefully fail any remaining in-flight commands in list */ void nbd_internal_abort_commands (struct nbd_handle *h, struct command **list) { struct command *next, *cmd; for (cmd = *list, *list = NULL; cmd != NULL; cmd = next) { bool retire = cmd->type == NBD_CMD_DISC; next = cmd->next; if (CALLBACK_IS_NOT_NULL (cmd->cb.completion)) { int error = cmd->error ? cmd->error : ENOTCONN; int r; assert (cmd->type != NBD_CMD_DISC); r = CALL_CALLBACK (cmd->cb.completion, &error); switch (r) { case -1: if (error) cmd->error = error; break; case 1: retire = true; break; } } if (cmd->error == 0) cmd->error = ENOTCONN; if (retire) nbd_internal_retire_and_free_command (cmd); else { cmd->next = NULL; if (h->cmds_done_tail) h->cmds_done_tail->next = cmd; else { assert (h->cmds_done == NULL); h->cmds_done = cmd; } h->cmds_done_tail = cmd; } } } STATE_MACHINE { READY: if (h->cmds_to_issue) SET_NEXT_STATE (%ISSUE_COMMAND.START); else { assert (h->sock); if (h->sock->ops->pending && h->sock->ops->pending (h->sock)) SET_NEXT_STATE (%REPLY.START); } return 0; DEAD: const char *err = nbd_get_error (); /* The caller should have used set_error() before reaching here */ assert (err != NULL); debug (h, "handle dead: %s", err); abort_option (h); nbd_internal_abort_commands (h, &h->cmds_to_issue); nbd_internal_abort_commands (h, &h->cmds_in_flight); h->in_flight = 0; if (h->sock) { h->sock->ops->close (h->sock); h->sock = NULL; } return -1; CLOSED: abort_option (h); nbd_internal_abort_commands (h, &h->cmds_to_issue); nbd_internal_abort_commands (h, &h->cmds_in_flight); h->in_flight = 0; if (h->sock) { h->sock->ops->close (h->sock); h->sock = NULL; } return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-connect.c0000644000175000017500000002226014616437241013606 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machines related to connecting to the server. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern char **environ; /* Disable Nagle's algorithm on the socket, but don't fail. */ static void disable_nagle (int sock) { const int flag = 1; setsockopt (sock, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof flag); } /* Disable SIGPIPE on FreeBSD & MacOS. * * Does nothing on other platforms, but if those platforms have * MSG_NOSIGNAL then we will set that when writing. (FreeBSD has both.) */ static void disable_sigpipe (int sock) { #ifdef SO_NOSIGPIPE const int flag = 1; setsockopt (sock, SOL_SOCKET, SO_NOSIGPIPE, &flag, sizeof flag); #endif } STATE_MACHINE { CONNECT.START: sa_family_t family; int fd, r; assert (!h->sock); family = h->connaddr.ss_family; fd = nbd_internal_socket (family, SOCK_STREAM, 0, true); if (fd == -1) { SET_NEXT_STATE (%.DEAD); set_error (errno, "socket"); return 0; } h->sock = nbd_internal_socket_create (fd); if (!h->sock) { SET_NEXT_STATE (%.DEAD); return 0; } disable_nagle (fd); disable_sigpipe (fd); r = connect (fd, (struct sockaddr *)&h->connaddr, h->connaddrlen); if (r == 0 || (r == -1 && errno == EINPROGRESS)) return 0; assert (r == -1); #ifdef __linux__ if (errno == EAGAIN && family == AF_UNIX) { /* This can happen on Linux when connecting to a Unix domain * socket, if the server's backlog is full. Unfortunately there * is nothing good we can do on the client side when this happens * since any solution would involve sleeping or busy-waiting. The * only solution is on the server side, increasing the backlog. * But at least improve the error message. * https://bugzilla.redhat.com/1925045 */ SET_NEXT_STATE (%.DEAD); set_error (errno, "connect: server backlog overflowed, " "see https://bugzilla.redhat.com/1925045"); return 0; } #endif SET_NEXT_STATE (%.DEAD); set_error (errno, "connect"); return 0; CONNECT.CONNECTING: int status; socklen_t len = sizeof status; if (getsockopt (h->sock->ops->get_fd (h->sock), SOL_SOCKET, SO_ERROR, &status, &len) == -1) { SET_NEXT_STATE (%.DEAD); set_error (errno, "getsockopt: SO_ERROR"); return 0; } /* This checks the status of the original connect call. */ if (status == 0) { SET_NEXT_STATE (%^MAGIC.START); return 0; } else { SET_NEXT_STATE (%.DEAD); set_error (status, "connect"); return 0; } CONNECT_TCP.START: int r; assert (h->hostname != NULL); assert (h->port != NULL); if (h->result) { freeaddrinfo (h->result); h->result = NULL; } h->connect_errno = 0; memset (&h->hints, 0, sizeof h->hints); h->hints.ai_family = AF_UNSPEC; h->hints.ai_socktype = SOCK_STREAM; h->hints.ai_flags = 0; h->hints.ai_protocol = 0; /* XXX Unfortunately getaddrinfo blocks. getaddrinfo_a isn't * portable and in any case isn't an alternative because it can't be * integrated into a main loop. */ r = getaddrinfo (h->hostname, h->port, &h->hints, &h->result); if (r != 0) { SET_NEXT_STATE (%^START); set_error (0, "getaddrinfo: hostname \"%s\" port \"%s\": %s", h->hostname, h->port, gai_strerror (r)); return -1; } h->rp = h->result; SET_NEXT_STATE (%CONNECT); return 0; CONNECT_TCP.CONNECT: int fd; assert (!h->sock); if (h->rp == NULL) { /* We tried all the results from getaddrinfo without success. * Save errno from most recent connect(2) call. XXX */ SET_NEXT_STATE (%^START); set_error (h->connect_errno, "connect: %s:%s: could not connect to remote host", h->hostname, h->port); return -1; } fd = nbd_internal_socket (h->rp->ai_family, h->rp->ai_socktype, h->rp->ai_protocol, true); if (fd == -1) { SET_NEXT_STATE (%NEXT_ADDRESS); return 0; } h->sock = nbd_internal_socket_create (fd); if (!h->sock) { SET_NEXT_STATE (%.DEAD); return 0; } disable_nagle (fd); disable_sigpipe (fd); if (connect (fd, h->rp->ai_addr, h->rp->ai_addrlen) == -1) { if (errno != EINPROGRESS) { if (h->connect_errno == 0) h->connect_errno = errno; SET_NEXT_STATE (%NEXT_ADDRESS); return 0; } } SET_NEXT_STATE (%CONNECTING); return 0; CONNECT_TCP.CONNECTING: int status; socklen_t len = sizeof status; if (getsockopt (h->sock->ops->get_fd (h->sock), SOL_SOCKET, SO_ERROR, &status, &len) == -1) { SET_NEXT_STATE (%.DEAD); set_error (errno, "getsockopt: SO_ERROR"); return 0; } /* This checks the status of the original connect call. */ if (status == 0) SET_NEXT_STATE (%^MAGIC.START); else { if (h->connect_errno == 0) h->connect_errno = status; SET_NEXT_STATE (%NEXT_ADDRESS); } return 0; CONNECT_TCP.NEXT_ADDRESS: if (h->sock) { h->sock->ops->close (h->sock); h->sock = NULL; } if (h->rp) h->rp = h->rp->ai_next; SET_NEXT_STATE (%CONNECT); return 0; CONNECT_COMMAND.START: enum state next; bool parentfd_transferred; int sv[2]; int flags; struct socket *sock; struct execvpe execvpe_ctx; pid_t pid; assert (!h->sock); assert (h->argv.ptr); assert (h->argv.ptr[0]); next = %.DEAD; parentfd_transferred = false; if (nbd_internal_socketpair (AF_UNIX, SOCK_STREAM, 0, sv) == -1) { set_error (errno, "socketpair"); goto done; } /* A process is effectively in an unusable state if any of STDIN_FILENO * (fd#0), STDOUT_FILENO (fd#1) and STDERR_FILENO (fd#2) don't exist. If they * exist however, then the socket pair created above will not intersect with * the fd set { 0, 1, 2 }. This is relevant for the child-side dup2() logic * below. */ assert (sv[0] > STDERR_FILENO); assert (sv[1] > STDERR_FILENO); /* Only the parent-side end of the socket pair must be set to non-blocking, * because the child may not be expecting a non-blocking socket. */ flags = fcntl (sv[0], F_GETFL, 0); if (flags == -1 || fcntl (sv[0], F_SETFL, flags|O_NONBLOCK) == -1) { set_error (errno, "fcntl"); goto close_socket_pair; } sock = nbd_internal_socket_create (sv[0]); if (!sock) /* nbd_internal_socket_create() calls set_error() internally */ goto close_socket_pair; parentfd_transferred = true; if (nbd_internal_execvpe_init (&execvpe_ctx, h->argv.ptr[0], h->argv.len) == -1) { set_error (errno, "nbd_internal_execvpe_init"); goto close_high_level_socket; } pid = fork (); if (pid == -1) { set_error (errno, "fork"); goto uninit_execvpe; } if (pid == 0) { /* child - run command */ if (close (sv[0]) == -1) { nbd_internal_fork_safe_perror ("close"); _exit (126); } if (dup2 (sv[1], STDIN_FILENO) == -1 || dup2 (sv[1], STDOUT_FILENO) == -1) { nbd_internal_fork_safe_perror ("dup2"); _exit (126); } NBD_INTERNAL_FORK_SAFE_ASSERT (sv[1] != STDIN_FILENO); NBD_INTERNAL_FORK_SAFE_ASSERT (sv[1] != STDOUT_FILENO); if (close (sv[1]) == -1) { nbd_internal_fork_safe_perror ("close"); _exit (126); } /* Restore SIGPIPE back to SIG_DFL. */ if (signal (SIGPIPE, SIG_DFL) == SIG_ERR) { nbd_internal_fork_safe_perror ("signal"); _exit (126); } (void)nbd_internal_fork_safe_execvpe (&execvpe_ctx, &h->argv, environ); nbd_internal_fork_safe_perror (h->argv.ptr[0]); if (errno == ENOENT) _exit (127); else _exit (126); } /* Parent -- we're done; commit. */ h->pid = pid; h->sock = sock; /* The sockets are connected already, we can jump directly to * receiving the server magic. */ next = %^MAGIC.START; /* fall through, for releasing the temporaries */ uninit_execvpe: nbd_internal_execvpe_uninit (&execvpe_ctx); close_high_level_socket: if (next == %.DEAD) sock->ops->close (sock); close_socket_pair: assert (next == %.DEAD || parentfd_transferred); if (!parentfd_transferred) close (sv[0]); close (sv[1]); done: SET_NEXT_STATE (next); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-connect-socket-activation.c0000644000175000017500000002536114525371754017245 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine related to connecting with systemd socket activation. */ #include #include #include #include #include #include #include #include #include #include "internal.h" #include "compiler-macros.h" #include "unique-name.h" #include "array-size.h" #include "checked-overflow.h" /* This is baked into the systemd socket activation API. */ #define FIRST_SOCKET_ACTIVATION_FD 3 /* Describes a systemd socket activation environment variable. */ struct sact_var { const char *prefix; /* variable name and equal sign */ size_t prefix_len; const char *value; size_t value_len; }; /* Determine the length of a string, using "sizeof" whenever possible. * * Do not use this macro on an argument that has side effects, as no guarantees * are given regarding the number of times the argument may be evaluated. * TYPE_IS_ARRAY(s) itself may contribute a different number of evaluations * dependent on whether "s" has variably modified type, and then the conditional * operator either evaluates "sizeof s" (which contributes 0 or 1 evaluations, * dependent on whether "s" has variably modified type) or strlen(s) (which * contributes 1 evaluation). Also note that the argument of the "sizeof" * operator is *only* parenthesized because "s" is a macro parameter here. */ #define STRLEN1(s) ((TYPE_IS_ARRAY (s) ? sizeof (s) - 1 : strlen (s))) /* Push a new element to an array of "sact_var" structures. * * "vars" is the array to extend. "num_vars" (of type (size_t *)) points to the * number of elements that the array, on input, contains; (*num_vars) is * increased by one on output. "prefix" and "value" serve as the values for * setting the fields in the new element. "ofs" (of type (size_t *)) may be * NULL; if it isn't, then on output, (*ofs) is set to the input value of * (*num_vars): the offset of the just-pushed element. * * Avoid arguments with side-effects here as well. */ #define SACT_VAR_PUSH(vars, num_vars, prefix, value, ofs) \ SACT_VAR_PUSH1 ((vars), (num_vars), (prefix), (value), (ofs), \ NBDKIT_UNIQUE_NAME (_ofs)) #define SACT_VAR_PUSH1(vars, num_vars, prefix, value, ofs, ofs1) \ do { \ size_t *ofs1; \ \ assert (*(num_vars) < ARRAY_SIZE (vars)); \ ofs1 = (ofs); \ if (ofs1 != NULL) \ *ofs1 = *(num_vars); \ (vars)[(*(num_vars))++] = (struct sact_var){ (prefix), STRLEN1 (prefix), \ (value), STRLEN1 (value) }; \ } while (0) extern char **environ; /* Prepare environment for calling execvp when doing systemd socket activation. * Takes the current environment and copies it. Removes any existing socket * activation variables and replaces them with new ones. Variables in "sact_var" * will be placed at the front of "env", preserving the order from "sact_var". */ static int prepare_socket_activation_environment (string_vector *env, const struct sact_var *sact_var, size_t num_vars) { const struct sact_var *var_end; char *new_var; const struct sact_var *var; size_t i; *env = (string_vector)empty_vector; /* Set the exclusive limit for loops over "sact_var". */ var_end = sact_var + num_vars; /* New environment variable being constructed for "env". */ new_var = NULL; /* Copy "sact_var" to the front of "env". */ for (var = sact_var; var < var_end; ++var) { size_t new_var_size; char *p; /* Calculate the size of the "NAME=value" string. */ if (ADD_OVERFLOW (var->prefix_len, var->value_len, &new_var_size) || ADD_OVERFLOW (new_var_size, 1u, &new_var_size)) { errno = EOVERFLOW; goto err; } /* Allocate and format "NAME=value". */ new_var = malloc (new_var_size); if (new_var == NULL) goto err; p = new_var; memcpy (p, var->prefix, var->prefix_len); p += var->prefix_len; memcpy (p, var->value, var->value_len); p += var->value_len; *p++ = '\0'; /* Push "NAME=value" to the vector. */ if (string_vector_append (env, new_var) == -1) goto err; /* Ownership transferred. */ new_var = NULL; } /* Append the current environment to "env", but remove "sact_var". */ for (i = 0; environ[i] != NULL; ++i) { for (var = sact_var; var < var_end; ++var) { if (strncmp (environ[i], var->prefix, var->prefix_len) == 0) break; } /* Drop known socket activation variable from the current environment. */ if (var < var_end) continue; new_var = strdup (environ[i]); if (new_var == NULL) goto err; if (string_vector_append (env, new_var) == -1) goto err; /* Ownership transferred. */ new_var = NULL; } /* The environ must be NULL-terminated. */ if (string_vector_append (env, NULL) == -1) goto err; return 0; err: set_error (errno, "malloc"); free (new_var); string_vector_empty (env); return -1; } STATE_MACHINE { CONNECT_SA.START: enum state next; char *tmpdir; char *sockpath; int s; struct sockaddr_un addr; struct execvpe execvpe_ctx; size_t num_vars; struct sact_var sact_var[3]; size_t pid_ofs; string_vector env; pid_t pid; assert (!h->sock); assert (h->argv.ptr); assert (h->argv.ptr[0]); next = %.DEAD; /* Use /tmp instead of TMPDIR because we must ensure the path is * short enough to store in the sockaddr_un. On some platforms this * may cause problems so we may need to revisit it. XXX */ tmpdir = strdup ("/tmp/libnbdXXXXXX"); if (tmpdir == NULL) { set_error (errno, "strdup"); goto done; } if (mkdtemp (tmpdir) == NULL) { set_error (errno, "mkdtemp"); goto free_tmpdir; } if (asprintf (&sockpath, "%s/sock", tmpdir) == -1) { set_error (errno, "asprintf"); goto rmdir_tmpdir; } s = nbd_internal_socket (AF_UNIX, SOCK_STREAM, 0, false); if (s == -1) { set_error (errno, "socket"); goto free_sockpath; } addr.sun_family = AF_UNIX; memcpy (addr.sun_path, sockpath, strlen (sockpath) + 1); if (bind (s, (struct sockaddr *)&addr, sizeof addr) == -1) { set_error (errno, "bind: %s", sockpath); goto close_socket; } if (listen (s, SOMAXCONN) == -1) { set_error (errno, "listen"); goto unlink_sockpath; } if (nbd_internal_execvpe_init (&execvpe_ctx, h->argv.ptr[0], h->argv.len) == -1) { set_error (errno, "nbd_internal_execvpe_init"); goto unlink_sockpath; } num_vars = 0; SACT_VAR_PUSH (sact_var, &num_vars, "LISTEN_PID=", "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", &pid_ofs); SACT_VAR_PUSH (sact_var, &num_vars, "LISTEN_FDS=", "1", NULL); /* Push LISTEN_FDNAMES unconditionally. This ensures we overwrite any * inherited LISTEN_FDNAMES. If "h->sact_name" is NULL, then push * "LISTEN_FDNAMES=unknown"; it will have the same effect on the child process * as unsetting LISTEN_FDNAMES would (with LISTEN_FDS being set to 1): * . */ SACT_VAR_PUSH (sact_var, &num_vars, "LISTEN_FDNAMES=", h->sact_name == NULL ? "unknown" : h->sact_name, NULL); if (prepare_socket_activation_environment (&env, sact_var, num_vars) == -1) /* prepare_socket_activation_environment() calls set_error() internally */ goto uninit_execvpe; pid = fork (); if (pid == -1) { set_error (errno, "fork"); goto empty_env; } if (pid == 0) { /* child - run command */ if (s != FIRST_SOCKET_ACTIVATION_FD) { if (dup2 (s, FIRST_SOCKET_ACTIVATION_FD) == -1) { nbd_internal_fork_safe_perror ("dup2"); _exit (126); } if (close (s) == -1) { nbd_internal_fork_safe_perror ("close"); _exit (126); } } else { /* We must unset CLOEXEC on the fd. (dup2 above does this * implicitly because CLOEXEC is set on the fd, not on the * socket). */ int flags = fcntl (s, F_GETFD, 0); if (flags == -1) { nbd_internal_fork_safe_perror ("fcntl: F_GETFD"); _exit (126); } if (fcntl (s, F_SETFD, (int)(flags & ~(unsigned)FD_CLOEXEC)) == -1) { nbd_internal_fork_safe_perror ("fcntl: F_SETFD"); _exit (126); } } char buf[32]; const char *v = nbd_internal_fork_safe_itoa (getpid (), buf, sizeof buf); NBD_INTERNAL_FORK_SAFE_ASSERT (strlen (v) <= sact_var[pid_ofs].value_len); strcpy (env.ptr[pid_ofs] + sact_var[pid_ofs].prefix_len, v); /* Restore SIGPIPE back to SIG_DFL. */ if (signal (SIGPIPE, SIG_DFL) == SIG_ERR) { nbd_internal_fork_safe_perror ("signal"); _exit (126); } (void)nbd_internal_fork_safe_execvpe (&execvpe_ctx, &h->argv, env.ptr); nbd_internal_fork_safe_perror (h->argv.ptr[0]); if (errno == ENOENT) _exit (127); else _exit (126); } /* Parent -- we're done; commit. */ h->sact_tmpdir = tmpdir; h->sact_sockpath = sockpath; h->pid = pid; h->connaddrlen = sizeof addr; memcpy (&h->connaddr, &addr, h->connaddrlen); next = %^CONNECT.START; /* fall through, for releasing the temporaries */ empty_env: string_vector_empty (&env); uninit_execvpe: nbd_internal_execvpe_uninit (&execvpe_ctx); unlink_sockpath: if (next == %.DEAD) unlink (sockpath); close_socket: close (s); free_sockpath: if (next == %.DEAD) free (sockpath); rmdir_tmpdir: if (next == %.DEAD) rmdir (tmpdir); free_tmpdir: if (next == %.DEAD) free (tmpdir); done: SET_NEXT_STATE (next); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-issue-command.c0000644000175000017500000001054014525371754014724 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for issuing commands (requests) to the server. */ STATE_MACHINE { ISSUE_COMMAND.START: struct command *cmd; assert (h->cmds_to_issue != NULL); cmd = h->cmds_to_issue; /* Were we interrupted by reading a reply to an earlier command? If * so, we can only get back here after a non-blocking jaunt through * the REPLY engine, which means we are unlikely to be unblocked for * writes yet; we want to advance back to the correct state but * without trying a send_from_wbuf that will likely return 1. */ if (h->in_write_shutdown) SET_NEXT_STATE_AND_BLOCK (%SEND_WRITE_SHUTDOWN); else if (h->wlen) { if (h->in_write_payload) SET_NEXT_STATE_AND_BLOCK (%SEND_WRITE_PAYLOAD); else SET_NEXT_STATE_AND_BLOCK (%SEND_REQUEST); return 0; } /* These fields are coincident between req.compact and req.extended */ h->req.compact.flags = htobe16 (cmd->flags); h->req.compact.type = htobe16 (cmd->type); h->req.compact.cookie = htobe64 (cmd->cookie); h->req.compact.offset = htobe64 (cmd->offset); if (h->extended_headers) { h->req.extended.magic = htobe32 (NBD_EXTENDED_REQUEST_MAGIC); h->req.extended.count = htobe64 (cmd->count); h->wlen = sizeof (h->req.extended); } else { assert (cmd->count <= UINT32_MAX); h->req.compact.magic = htobe32 (NBD_REQUEST_MAGIC); h->req.compact.count = htobe32 (cmd->count); h->wlen = sizeof (h->req.compact); } h->chunks_sent++; h->wbuf = &h->req; if (cmd->type == NBD_CMD_WRITE || cmd->next) h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND_REQUEST); return 0; ISSUE_COMMAND.SEND_REQUEST: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%PREPARE_WRITE_PAYLOAD); } return 0; ISSUE_COMMAND.PAUSE_SEND_REQUEST: assert (h->wlen); assert (h->cmds_to_issue != NULL); h->in_write_payload = false; SET_NEXT_STATE (%^REPLY.START); return 0; ISSUE_COMMAND.PREPARE_WRITE_PAYLOAD: struct command *cmd; assert (h->cmds_to_issue != NULL); cmd = h->cmds_to_issue; assert (cmd->cookie == be64toh (h->req.compact.cookie)); if (cmd->type == NBD_CMD_WRITE || (h->extended_headers && cmd->type == NBD_CMD_BLOCK_STATUS && cmd->flags & NBD_CMD_FLAG_PAYLOAD_LEN)) { h->wbuf = cmd->data; h->wlen = cmd->count; if (cmd->next && cmd->count < 64 * 1024) h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND_WRITE_PAYLOAD); } else if (cmd->type == NBD_CMD_DISC) { h->in_write_shutdown = true; SET_NEXT_STATE (%SEND_WRITE_SHUTDOWN); } else SET_NEXT_STATE (%FINISH); return 0; ISSUE_COMMAND.SEND_WRITE_PAYLOAD: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%FINISH); } return 0; ISSUE_COMMAND.PAUSE_WRITE_PAYLOAD: assert (h->wlen); assert (h->cmds_to_issue != NULL); h->in_write_payload = true; SET_NEXT_STATE (%^REPLY.START); return 0; ISSUE_COMMAND.SEND_WRITE_SHUTDOWN: if (h->sock->ops->shut_writes (h, h->sock)) SET_NEXT_STATE (%FINISH); return 0; ISSUE_COMMAND.PAUSE_WRITE_SHUTDOWN: assert (h->in_write_shutdown); SET_NEXT_STATE (%^REPLY.START); return 0; ISSUE_COMMAND.FINISH: struct command *cmd; assert (!h->wlen); assert (h->cmds_to_issue != NULL); cmd = h->cmds_to_issue; assert (cmd->cookie == be64toh (h->req.compact.cookie)); h->cmds_to_issue = cmd->next; if (h->cmds_to_issue_tail == cmd) h->cmds_to_issue_tail = NULL; cmd->next = h->cmds_in_flight; h->cmds_in_flight = cmd; SET_NEXT_STATE (%.READY); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-magic.c0000644000175000017500000000354614615703717013246 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for parsing the initial magic number from the server. */ STATE_MACHINE { MAGIC.START: h->rbuf = &h->sbuf; h->rlen = 16; SET_NEXT_STATE (%RECV_MAGIC); return 0; MAGIC.RECV_MAGIC: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK_MAGIC); } return 0; MAGIC.CHECK_MAGIC: uint64_t version; if (be64toh (h->sbuf.new_handshake.nbdmagic) != NBD_MAGIC) { SET_NEXT_STATE (%.DEAD); set_error (0, "handshake: server did not send expected NBD magic"); return 0; } version = be64toh (h->sbuf.new_handshake.version); if (version == NBD_NEW_VERSION) { assert (h->opt_current == 0); h->chunks_received++; SET_NEXT_STATE (%.NEWSTYLE.START); } else if (version == NBD_OLD_VERSION) { h->chunks_received++; SET_NEXT_STATE (%.OLDSTYLE.START); } else { SET_NEXT_STATE (%.DEAD); set_error (0, "handshake: server is not either an oldstyle or " "fixed newstyle NBD server"); return 0; } return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-newstyle-opt-export-name.c0000644000175000017500000000476714525371754017105 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for ending newstyle handshake with NBD_OPT_EXPORT_NAME. */ STATE_MACHINE { NEWSTYLE.OPT_EXPORT_NAME.START: h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_EXPORT_NAME); h->sbuf.option.optlen = htobe32 (strlen (h->export_name)); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND); return 0; NEWSTYLE.OPT_EXPORT_NAME.SEND: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->wbuf = h->export_name; h->wlen = strlen (h->export_name); SET_NEXT_STATE (%SEND_EXPORT); } return 0; NEWSTYLE.OPT_EXPORT_NAME.SEND_EXPORT: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.export_name_reply; if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_NO_ZEROES) != 0) h->rlen -= sizeof h->sbuf.export_name_reply.zeroes; SET_NEXT_STATE (%RECV_REPLY); } return 0; NEWSTYLE.OPT_EXPORT_NAME.RECV_REPLY: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK_REPLY); } return 0; NEWSTYLE.OPT_EXPORT_NAME.CHECK_REPLY: uint64_t exportsize; uint16_t eflags; int err = 0; exportsize = be64toh (h->sbuf.export_name_reply.exportsize); eflags = be16toh (h->sbuf.export_name_reply.eflags); if (nbd_internal_set_size_and_flags (h, exportsize, eflags) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } nbd_internal_set_payload (h); SET_NEXT_STATE (%^FINISHED); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-newstyle-opt-extended-headers.c0000644000175000017500000000635614525371754020053 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for negotiating NBD_OPT_EXTENDED_HEADERS. */ STATE_MACHINE { NEWSTYLE.OPT_EXTENDED_HEADERS.START: assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_EXTENDED_HEADERS) assert (h->opt_mode); else { assert (CALLBACK_IS_NULL (h->opt_cb.completion)); if (!h->request_eh || !h->request_sr) { SET_NEXT_STATE (%^OPT_STRUCTURED_REPLY.START); return 0; } } h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_EXTENDED_HEADERS); h->sbuf.option.optlen = htobe32 (0); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; SET_NEXT_STATE (%SEND); return 0; NEWSTYLE.OPT_EXTENDED_HEADERS.SEND: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.or.option_reply; SET_NEXT_STATE (%RECV_REPLY); } return 0; NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: if (prepare_for_reply_payload (h, NBD_OPT_EXTENDED_HEADERS) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } SET_NEXT_STATE (%RECV_REPLY_PAYLOAD); } return 0; NEWSTYLE.OPT_EXTENDED_HEADERS.RECV_REPLY_PAYLOAD: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK_REPLY); } return 0; NEWSTYLE.OPT_EXTENDED_HEADERS.CHECK_REPLY: uint32_t reply; int err = ENOTSUP; reply = be32toh (h->sbuf.or.option_reply.reply); switch (reply) { case NBD_REP_ACK: debug (h, "negotiated extended headers on this connection"); h->extended_headers = true; /* Extended headers trump structured replies, so skip ahead. */ h->structured_replies = true; err = 0; break; case NBD_REP_ERR_INVALID: err = EINVAL; /* fallthrough */ default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } if (h->extended_headers) debug (h, "extended headers already negotiated"); else debug (h, "extended headers are not supported by this server"); break; } /* Next option. */ if (h->opt_current == NBD_OPT_EXTENDED_HEADERS) SET_NEXT_STATE (%.NEGOTIATING); else SET_NEXT_STATE (%^OPT_STRUCTURED_REPLY.START); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-newstyle-opt-list.c0000644000175000017500000001004214525371754015600 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for sending NBD_OPT_LIST to list exports. * * This is only reached via nbd_opt_list during opt_mode. */ STATE_MACHINE { NEWSTYLE.OPT_LIST.START: assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); assert (h->opt_mode && h->opt_current == NBD_OPT_LIST); assert (CALLBACK_IS_NOT_NULL (h->opt_cb.fn.list)); h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_LIST); h->sbuf.option.optlen = 0; h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof (h->sbuf.option); SET_NEXT_STATE (%SEND); return 0; NEWSTYLE.OPT_LIST.SEND: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof (h->sbuf.or.option_reply); SET_NEXT_STATE (%RECV_REPLY); } return 0; NEWSTYLE.OPT_LIST.RECV_REPLY: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: if (prepare_for_reply_payload (h, NBD_OPT_LIST) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } SET_NEXT_STATE (%RECV_REPLY_PAYLOAD); } return 0; NEWSTYLE.OPT_LIST.RECV_REPLY_PAYLOAD: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK_REPLY); } return 0; NEWSTYLE.OPT_LIST.CHECK_REPLY: const size_t maxpayload = sizeof h->sbuf.or.payload.server; uint32_t reply; uint32_t len; char *tmp; int err; reply = be32toh (h->sbuf.or.option_reply.reply); len = be32toh (h->sbuf.or.option_reply.replylen); switch (reply) { case NBD_REP_SERVER: /* Got one export. */ if (len >= maxpayload) debug (h, "skipping too large export name reply"); else { uint32_t elen; const char *name; const char *desc; /* server.str is oversized for trailing NUL byte convenience */ h->sbuf.or.payload.server.str[len - 4] = '\0'; elen = be32toh (h->sbuf.or.payload.server.server.export_name_len); if (elen > len - 4 || elen > NBD_MAX_STRING || len - 4 - elen > NBD_MAX_STRING) { set_error (0, "invalid export length"); SET_NEXT_STATE (%.DEAD); return 0; } if (elen == len + 4) { tmp = NULL; name = h->sbuf.or.payload.server.str; desc = ""; } else { tmp = strndup (h->sbuf.or.payload.server.str, elen); if (tmp == NULL) { set_error (errno, "strdup"); SET_NEXT_STATE (%.DEAD); return 0; } name = tmp; desc = h->sbuf.or.payload.server.str + elen; } CALL_CALLBACK (h->opt_cb.fn.list, name, desc); free (tmp); } /* Wait for more replies. */ h->rbuf = &h->sbuf; h->rlen = sizeof (h->sbuf.or.option_reply); SET_NEXT_STATE (%RECV_REPLY); return 0; case NBD_REP_ACK: /* Finished receiving the list. */ err = 0; break; default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } err = ENOTSUP; set_error (err, "unexpected response, possibly the server does not " "support listing exports"); break; } CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); SET_NEXT_STATE (%.NEGOTIATING); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-newstyle-opt-go.c0000644000175000017500000002227014525371754015240 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for ending fixed newstyle handshake with NBD_OPT_GO. */ STATE_MACHINE { NEWSTYLE.OPT_GO.START: uint16_t nrinfos = 0; nbd_internal_reset_size_and_flags (h); if (h->request_block_size) nrinfos++; if (h->full_info) nrinfos += 2; assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_INFO) assert (h->opt_mode); else if (!h->opt_current) { assert (!h->opt_mode); assert (CALLBACK_IS_NULL (h->opt_cb.completion)); h->opt_current = NBD_OPT_GO; } h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (h->opt_current); h->sbuf.option.optlen = htobe32 (/* exportnamelen */ 4 + strlen (h->export_name) + sizeof nrinfos + 2 * nrinfos); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND); return 0; NEWSTYLE.OPT_GO.SEND: const uint32_t exportnamelen = strlen (h->export_name); switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->sbuf.len = htobe32 (exportnamelen); h->wbuf = &h->sbuf; h->wlen = 4; h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND_EXPORTNAMELEN); } return 0; NEWSTYLE.OPT_GO.SEND_EXPORTNAMELEN: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->wbuf = h->export_name; h->wlen = strlen (h->export_name); h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND_EXPORT); } return 0; NEWSTYLE.OPT_GO.SEND_EXPORT: uint16_t nrinfos = 0; if (h->request_block_size) nrinfos++; if (h->full_info) nrinfos += 2; switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->sbuf.nrinfos = htobe16 (nrinfos); h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.nrinfos; SET_NEXT_STATE (%SEND_NRINFOS); } return 0; NEWSTYLE.OPT_GO.SEND_NRINFOS: uint16_t nrinfos = 0; switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: if (h->request_block_size) h->sbuf.info[nrinfos++] = htobe16 (NBD_INFO_BLOCK_SIZE); if (h->full_info) { h->sbuf.info[nrinfos++] = htobe16 (NBD_INFO_NAME); h->sbuf.info[nrinfos++] = htobe16 (NBD_INFO_DESCRIPTION); } h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.info[0] * nrinfos; SET_NEXT_STATE (%SEND_INFO); } return 0; NEWSTYLE.OPT_GO.SEND_INFO: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.or.option_reply; SET_NEXT_STATE (%RECV_REPLY); } return 0; NEWSTYLE.OPT_GO.RECV_REPLY: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: if (prepare_for_reply_payload (h, h->opt_current) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } SET_NEXT_STATE (%RECV_REPLY_PAYLOAD); } return 0; NEWSTYLE.OPT_GO.RECV_REPLY_PAYLOAD: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK_REPLY); } return 0; NEWSTYLE.OPT_GO.CHECK_REPLY: uint32_t reply; uint32_t len; const size_t maxpayload = sizeof h->sbuf.or.payload; int err; reply = be32toh (h->sbuf.or.option_reply.reply); len = be32toh (h->sbuf.or.option_reply.replylen); switch (reply) { case NBD_REP_INFO: if (len > maxpayload) { /* See prepare_for_reply_payload, used in RECV_REPLY */ assert (h->rbuf == NULL); debug (h, "skipping large NBD_REP_INFO"); } else { uint16_t info; uint64_t exportsize; uint16_t eflags; uint32_t min, pref, max; assert (len >= sizeof h->sbuf.or.payload.export.info); info = be16toh (h->sbuf.or.payload.export.info); switch (info) { case NBD_INFO_EXPORT: if (len != sizeof h->sbuf.or.payload.export) { SET_NEXT_STATE (%.DEAD); set_error (0, "handshake: incorrect NBD_INFO_EXPORT option reply " "length"); return 0; } exportsize = be64toh (h->sbuf.or.payload.export.exportsize); eflags = be16toh (h->sbuf.or.payload.export.eflags); if (nbd_internal_set_size_and_flags (h, exportsize, eflags) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } break; case NBD_INFO_BLOCK_SIZE: if (len != sizeof h->sbuf.or.payload.block_size) { SET_NEXT_STATE (%.DEAD); set_error (0, "handshake: incorrect NBD_INFO_BLOCK_SIZE option " "reply length"); return 0; } min = be32toh (h->sbuf.or.payload.block_size.minimum); pref = be32toh (h->sbuf.or.payload.block_size.preferred); max = be32toh (h->sbuf.or.payload.block_size.maximum); if (nbd_internal_set_block_size (h, min, pref, max) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } break; case NBD_INFO_NAME: if (len > sizeof h->sbuf.or.payload.name_desc.info + NBD_MAX_STRING || len < sizeof h->sbuf.or.payload.name_desc.info) { SET_NEXT_STATE (%.DEAD); set_error (0, "handshake: incorrect NBD_INFO_NAME option reply " "length"); return 0; } free (h->canonical_name); h->canonical_name = strndup (h->sbuf.or.payload.name_desc.str, len - 2); if (h->canonical_name == NULL) { SET_NEXT_STATE (%.DEAD); set_error (errno, "strndup"); return 0; } break; case NBD_INFO_DESCRIPTION: if (len > sizeof h->sbuf.or.payload.name_desc.info + NBD_MAX_STRING || len < sizeof h->sbuf.or.payload.name_desc.info) { SET_NEXT_STATE (%.DEAD); set_error (0, "handshake: incorrect NBD_INFO_DESCRIPTION option " "reply length"); return 0; } free (h->description); h->description = strndup (h->sbuf.or.payload.name_desc.str, len - 2); if (h->description == NULL) { SET_NEXT_STATE (%.DEAD); set_error (errno, "strndup"); return 0; } break; default: debug (h, "skipping unknown NBD_REP_INFO type %d", be16toh (h->sbuf.or.payload.export.info)); break; } } /* Server is allowed to send any number of NBD_REP_INFO, read next one. */ h->rbuf = &h->sbuf; h->rlen = sizeof (h->sbuf.or.option_reply); SET_NEXT_STATE (%RECV_REPLY); return 0; case NBD_REP_ERR_UNSUP: if (h->opt_current == NBD_OPT_GO) { debug (h, "server is confused by NBD_OPT_GO, continuing anyway"); SET_NEXT_STATE (%^OPT_EXPORT_NAME.START); return 0; } /* fallthrough */ default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } /* Decode expected known errors into a nicer string */ switch (reply) { case NBD_REP_ERR_UNSUP: assert (h->opt_current == NBD_OPT_INFO); set_error (ENOTSUP, "handshake: server lacks NBD_OPT_INFO support"); break; case NBD_REP_ERR_POLICY: case NBD_REP_ERR_PLATFORM: set_error (0, "handshake: server policy prevents NBD_OPT_GO"); break; case NBD_REP_ERR_INVALID: case NBD_REP_ERR_TOO_BIG: set_error (EINVAL, "handshake: server rejected NBD_OPT_GO as invalid"); break; case NBD_REP_ERR_TLS_REQD: set_error (ENOTSUP, "handshake: server requires TLS encryption first"); break; case NBD_REP_ERR_UNKNOWN: set_error (ENOENT, "handshake: server has no export named '%s'", h->export_name); break; case NBD_REP_ERR_SHUTDOWN: set_error (ESHUTDOWN, "handshake: server is shutting down"); break; case NBD_REP_ERR_BLOCK_SIZE_REQD: set_error (EINVAL, "handshake: server requires specific block sizes"); break; default: set_error (0, "handshake: unknown reply from NBD_OPT_GO: 0x%" PRIx32, reply); } nbd_internal_reset_size_and_flags (h); h->meta_valid = false; err = nbd_get_errno () ? : ENOTSUP; break; case NBD_REP_ACK: nbd_internal_set_payload (h); err = 0; break; } if (err == 0 && h->opt_current == NBD_OPT_GO) SET_NEXT_STATE (%^FINISHED); else if (h->opt_mode) SET_NEXT_STATE (%.NEGOTIATING); else SET_NEXT_STATE (%^PREPARE_OPT_ABORT); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-newstyle-opt-meta-context.c0000644000175000017500000002247614565712165017252 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for negotiating NBD_OPT_SET/LIST_META_CONTEXT. */ STATE_MACHINE { NEWSTYLE.OPT_META_CONTEXT.START: size_t i; uint32_t len, opt; /* This state group is reached from: * h->opt_mode == false (h->opt_current == 0): * nbd_connect_*() * -> conditionally use SET, next state OPT_GO for NBD_OPT_GO * h->opt_mode == true (h->opt_current matches calling API): * nbd_opt_info() * -> conditionally use SET, next state OPT_GO for NBD_OPT_INFO * nbd_opt_go() * -> conditionally use SET, next state OPT_GO for NBD_OPT_GO * nbd_opt_list_meta_context() * -> unconditionally use LIST, next state NEGOTIATING * nbd_opt_set_meta_context() * -> unconditionally use SET, next state NEGOTIATING * * If SET is conditional, we skip it if h->request_meta is false, if * structured replies were not negotiated, or if no contexts to request. * SET then manipulates h->meta_contexts, and sets h->meta_valid on * success, while LIST is stateless. * If OPT_GO is later successful, it populates h->exportsize and friends, * and also sets h->meta_valid if h->request_meta but we skipped SET here. * There is a callback if and only if the command is unconditional. */ assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_LIST_META_CONTEXT) { assert (h->opt_mode); assert (CALLBACK_IS_NOT_NULL (h->opt_cb.fn.context)); opt = h->opt_current; } else { if (h->opt_current == NBD_OPT_SET_META_CONTEXT) assert (CALLBACK_IS_NOT_NULL (h->opt_cb.fn.context)); else assert (CALLBACK_IS_NULL (h->opt_cb.fn.context)); opt = NBD_OPT_SET_META_CONTEXT; if (h->request_meta || h->opt_current == opt) { for (i = 0; i < h->meta_contexts.len; ++i) free (h->meta_contexts.ptr[i].name); meta_vector_reset (&h->meta_contexts); h->meta_valid = false; } } if (opt != h->opt_current) { if (!h->request_meta || !h->structured_replies || h->request_meta_contexts.len == 0) { SET_NEXT_STATE (%^OPT_GO.START); return 0; } if (nbd_internal_set_querylist (h, NULL) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } } /* Calculate the length of the option request data. */ len = 4 /* exportname len */ + strlen (h->export_name) + 4 /* nr queries */; for (i = 0; i < h->querylist.len; ++i) len += 4 /* length of query */ + strlen (h->querylist.ptr[i]); h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (opt); h->sbuf.option.optlen = htobe32 (len); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof (h->sbuf.option); h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND); return 0; NEWSTYLE.OPT_META_CONTEXT.SEND: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->sbuf.len = htobe32 (strlen (h->export_name)); h->wbuf = &h->sbuf.len; h->wlen = sizeof h->sbuf.len; h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND_EXPORTNAMELEN); } return 0; NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAMELEN: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->wbuf = h->export_name; h->wlen = strlen (h->export_name); h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND_EXPORTNAME); } return 0; NEWSTYLE.OPT_META_CONTEXT.SEND_EXPORTNAME: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->sbuf.nrqueries = htobe32 (h->querylist.len); h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.nrqueries; h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND_NRQUERIES); } return 0; NEWSTYLE.OPT_META_CONTEXT.SEND_NRQUERIES: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->querynum = 0; SET_NEXT_STATE (%PREPARE_NEXT_QUERY); } return 0; NEWSTYLE.OPT_META_CONTEXT.PREPARE_NEXT_QUERY: if (h->querynum >= h->querylist.len) { /* end of list of requested meta contexts */ SET_NEXT_STATE (%PREPARE_FOR_REPLY); return 0; } const char *query = h->querylist.ptr[h->querynum]; h->sbuf.len = htobe32 (strlen (query)); h->wbuf = &h->sbuf.len; h->wlen = sizeof h->sbuf.len; h->wflags = MSG_MORE; SET_NEXT_STATE (%SEND_QUERYLEN); return 0; NEWSTYLE.OPT_META_CONTEXT.SEND_QUERYLEN: const char *query = h->querylist.ptr[h->querynum]; switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->wbuf = query; h->wlen = strlen (query); SET_NEXT_STATE (%SEND_QUERY); } return 0; NEWSTYLE.OPT_META_CONTEXT.SEND_QUERY: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->querynum++; SET_NEXT_STATE (%PREPARE_NEXT_QUERY); } return 0; NEWSTYLE.OPT_META_CONTEXT.PREPARE_FOR_REPLY: h->rbuf = &h->sbuf.or.option_reply; h->rlen = sizeof h->sbuf.or.option_reply; SET_NEXT_STATE (%RECV_REPLY); return 0; NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY: uint32_t opt; if (h->opt_current == NBD_OPT_LIST_META_CONTEXT) opt = h->opt_current; else opt = NBD_OPT_SET_META_CONTEXT; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: if (prepare_for_reply_payload (h, opt) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } SET_NEXT_STATE (%RECV_REPLY_PAYLOAD); } return 0; NEWSTYLE.OPT_META_CONTEXT.RECV_REPLY_PAYLOAD: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK_REPLY); } return 0; NEWSTYLE.OPT_META_CONTEXT.CHECK_REPLY: uint32_t reply; uint32_t len; const size_t maxpayload = sizeof h->sbuf.or.payload.context; struct meta_context meta_context; uint32_t opt; int err = 0; if (h->opt_current == NBD_OPT_LIST_META_CONTEXT) opt = h->opt_current; else opt = NBD_OPT_SET_META_CONTEXT; reply = be32toh (h->sbuf.or.option_reply.reply); len = be32toh (h->sbuf.or.option_reply.replylen); switch (reply) { case NBD_REP_ACK: /* End of list of replies. */ if (opt == NBD_OPT_SET_META_CONTEXT) h->meta_valid = true; if (opt == h->opt_current) { SET_NEXT_STATE (%.NEGOTIATING); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); } else SET_NEXT_STATE (%^OPT_GO.START); break; case NBD_REP_META_CONTEXT: /* A context. */ if (len > maxpayload) debug (h, "skipping too large meta context"); else { assert (len > sizeof h->sbuf.or.payload.context.context.context_id); meta_context.context_id = be32toh (h->sbuf.or.payload.context.context.context_id); /* String payload is not NUL-terminated. */ meta_context.name = strndup (h->sbuf.or.payload.context.str, len - sizeof meta_context.context_id); if (meta_context.name == NULL) { set_error (errno, "strdup"); SET_NEXT_STATE (%.DEAD); return 0; } debug (h, "negotiated %s with context ID %" PRIu32, meta_context.name, meta_context.context_id); if (CALLBACK_IS_NOT_NULL (h->opt_cb.fn.context)) CALL_CALLBACK (h->opt_cb.fn.context, meta_context.name); if (opt == NBD_OPT_LIST_META_CONTEXT) free (meta_context.name); else if (meta_vector_append (&h->meta_contexts, meta_context) == -1) { set_error (errno, "realloc"); free (meta_context.name); SET_NEXT_STATE (%.DEAD); return 0; } } SET_NEXT_STATE (%PREPARE_FOR_REPLY); break; default: /* Anything else is an error, report it for explicit LIST/SET, ignore it * for automatic progress (nbd_connect_*, nbd_opt_info, nbd_opt_go). */ if (handle_reply_error (h) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } if (opt == h->opt_current) { /* XXX Should we decode specific expected errors, like * REP_ERR_UNKNOWN to ENOENT or REP_ERR_TOO_BIG to ERANGE? */ err = ENOTSUP; set_error (err, "unexpected response, possibly the server does not " "support meta contexts"); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); SET_NEXT_STATE (%.NEGOTIATING); } else { /* Treat ignored error as success only if list is still empty */ if (opt == NBD_OPT_SET_META_CONTEXT) h->meta_valid = h->meta_contexts.len == 0; debug (h, "handshake: ignoring unexpected error from " "NBD_OPT_SET_META_CONTEXT (%" PRIu32 ")", reply); SET_NEXT_STATE (%^OPT_GO.START); } break; } return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-newstyle-opt-starttls.c0000644000175000017500000001244714525371754016520 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for sending NBD_OPT_STARTTLS. */ STATE_MACHINE { NEWSTYLE.OPT_STARTTLS.START: assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_STARTTLS) assert (h->opt_mode); else { /* If TLS was not requested we skip this option and go to the next one. */ if (h->tls == LIBNBD_TLS_DISABLE) { SET_NEXT_STATE (%^OPT_EXTENDED_HEADERS.START); return 0; } assert (CALLBACK_IS_NULL (h->opt_cb.completion)); } h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_STARTTLS); h->sbuf.option.optlen = 0; h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof (h->sbuf.option); SET_NEXT_STATE (%SEND); return 0; NEWSTYLE.OPT_STARTTLS.SEND: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof (h->sbuf.or.option_reply); SET_NEXT_STATE (%RECV_REPLY); } return 0; NEWSTYLE.OPT_STARTTLS.RECV_REPLY: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: if (prepare_for_reply_payload (h, NBD_OPT_STARTTLS) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } SET_NEXT_STATE (%RECV_REPLY_PAYLOAD); } return 0; NEWSTYLE.OPT_STARTTLS.RECV_REPLY_PAYLOAD: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK_REPLY); } return 0; NEWSTYLE.OPT_STARTTLS.CHECK_REPLY: uint32_t reply; struct socket *new_sock; int err = ENOTSUP; reply = be32toh (h->sbuf.or.option_reply.reply); switch (reply) { case NBD_REP_ACK: if (h->tls_negotiated) { set_error (EPROTO, "handshake: unable to support server accepting TLS twice"); SET_NEXT_STATE (%.DEAD); return 0; } nbd_internal_reset_size_and_flags (h); h->structured_replies = false; h->extended_headers = false; h->meta_valid = false; new_sock = nbd_internal_crypto_create_session (h, h->sock); if (new_sock == NULL) { SET_NEXT_STATE (%.DEAD); return 0; } h->sock = new_sock; if (nbd_internal_crypto_is_reading (h)) SET_NEXT_STATE (%TLS_HANDSHAKE_READ); else SET_NEXT_STATE (%TLS_HANDSHAKE_WRITE); return 0; case NBD_REP_ERR_INVALID: err = EINVAL; /* fallthrough */ default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } /* Server refused to upgrade to TLS. If h->tls is not 'require' (2) * then we can continue unencrypted. */ if (h->tls == LIBNBD_TLS_REQUIRE) { SET_NEXT_STATE (%^PREPARE_OPT_ABORT); set_error (ENOTSUP, "handshake: server refused TLS, " "but handle TLS setting is 'require' (2)"); return 0; } debug (h, "server refused TLS (%s)", reply == NBD_REP_ERR_POLICY ? "policy" : reply == NBD_REP_ERR_INVALID ? "invalid request" : "not supported"); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); if (h->opt_current == NBD_OPT_STARTTLS) SET_NEXT_STATE (%.NEGOTIATING); else { debug (h, "continuing with unencrypted connection"); SET_NEXT_STATE (%^OPT_EXTENDED_HEADERS.START); } return 0; } return 0; NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_READ: int r; r = nbd_internal_crypto_handshake (h); if (r == -1) { SET_NEXT_STATE (%.DEAD); return 0; } if (r == 0) { SET_NEXT_STATE (%TLS_HANDSHAKE_DONE); return 0; } /* Continue handshake. */ if (nbd_internal_crypto_is_reading (h)) SET_NEXT_STATE (%TLS_HANDSHAKE_READ); else SET_NEXT_STATE (%TLS_HANDSHAKE_WRITE); return 0; NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_WRITE: int r; r = nbd_internal_crypto_handshake (h); if (r == -1) { SET_NEXT_STATE (%.DEAD); return 0; } if (r == 0) { SET_NEXT_STATE (%TLS_HANDSHAKE_DONE); return 0; } /* Continue handshake. */ if (nbd_internal_crypto_is_reading (h)) SET_NEXT_STATE (%TLS_HANDSHAKE_READ); else SET_NEXT_STATE (%TLS_HANDSHAKE_WRITE); return 0; NEWSTYLE.OPT_STARTTLS.TLS_HANDSHAKE_DONE: int err = 0; /* Finished handshake. */ h->tls_negotiated = true; nbd_internal_crypto_debug_tls_enabled (h); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); /* Continue with option negotiation. */ if (h->opt_current == NBD_OPT_STARTTLS) SET_NEXT_STATE (%.NEGOTIATING); else SET_NEXT_STATE (%^OPT_EXTENDED_HEADERS.START); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-newstyle-opt-structured-reply.c0000644000175000017500000000634214525371754020172 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for negotiating NBD_OPT_STRUCTURED_REPLY. */ STATE_MACHINE { NEWSTYLE.OPT_STRUCTURED_REPLY.START: assert (h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE); if (h->opt_current == NBD_OPT_STRUCTURED_REPLY) assert (h->opt_mode); else { assert (CALLBACK_IS_NULL (h->opt_cb.completion)); if (!h->request_sr || h->structured_replies) { if (h->opt_mode) SET_NEXT_STATE (%.NEGOTIATING); else SET_NEXT_STATE (%^OPT_META_CONTEXT.START); return 0; } } h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_STRUCTURED_REPLY); h->sbuf.option.optlen = htobe32 (0); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; SET_NEXT_STATE (%SEND); return 0; NEWSTYLE.OPT_STRUCTURED_REPLY.SEND: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.or.option_reply; SET_NEXT_STATE (%RECV_REPLY); } return 0; NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: if (prepare_for_reply_payload (h, NBD_OPT_STRUCTURED_REPLY) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } SET_NEXT_STATE (%RECV_REPLY_PAYLOAD); } return 0; NEWSTYLE.OPT_STRUCTURED_REPLY.RECV_REPLY_PAYLOAD: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK_REPLY); } return 0; NEWSTYLE.OPT_STRUCTURED_REPLY.CHECK_REPLY: uint32_t reply; int err = ENOTSUP; reply = be32toh (h->sbuf.or.option_reply.reply); switch (reply) { case NBD_REP_ACK: debug (h, "negotiated structured replies on this connection"); h->structured_replies = true; err = 0; break; case NBD_REP_ERR_INVALID: case NBD_REP_ERR_EXT_HEADER_REQD: err = EINVAL; /* fallthrough */ default: if (handle_reply_error (h) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } if (h->structured_replies) debug (h, "structured replies already negotiated"); else debug (h, "structured replies are not supported by this server"); break; } /* Next option. */ if (h->opt_mode) SET_NEXT_STATE (%.NEGOTIATING); else SET_NEXT_STATE (%^OPT_META_CONTEXT.START); CALL_CALLBACK (h->opt_cb.completion, &err); nbd_internal_free_option (h); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-newstyle.c0000644000175000017500000001625614615704024014032 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include "internal.h" /* Common code for parsing a reply to NBD_OPT_*. */ static int prepare_for_reply_payload (struct nbd_handle *h, uint32_t opt) { const size_t maxpayload = sizeof h->sbuf.or.payload; uint64_t magic; uint32_t option; uint32_t reply; uint32_t len; magic = be64toh (h->sbuf.or.option_reply.magic); option = be32toh (h->sbuf.or.option_reply.option); reply = be32toh (h->sbuf.or.option_reply.reply); len = be32toh (h->sbuf.or.option_reply.replylen); if (magic != NBD_REP_MAGIC || option != opt) { set_error (0, "handshake: invalid option reply magic or option"); return -1; } /* Validate lengths that the state machine depends on. */ switch (reply) { case NBD_REP_ACK: if (len != 0) { set_error (0, "handshake: invalid NBD_REP_ACK option reply length"); return -1; } break; case NBD_REP_INFO: /* Can't enforce an upper bound, thanks to unknown INFOs */ if (len < sizeof h->sbuf.or.payload.export.info) { set_error (0, "handshake: NBD_REP_INFO reply length too small"); return -1; } break; case NBD_REP_META_CONTEXT: if (len <= sizeof h->sbuf.or.payload.context.context || len > sizeof h->sbuf.or.payload.context) { set_error (0, "handshake: invalid NBD_REP_META_CONTEXT reply length"); return -1; } break; } /* Read the following payload if it is short enough to fit in the * static buffer. If it's too long, skip it. */ len = be32toh (h->sbuf.or.option_reply.replylen); if (len > MAX_REQUEST_SIZE) { set_error (0, "handshake: invalid option reply length"); return -1; } else if (len <= maxpayload) h->rbuf = &h->sbuf.or.payload; else h->rbuf = NULL; h->rlen = len; return 0; } /* Check an unexpected server reply. If it is an error, log any * message from the server and return 0; otherwise, return -1. */ static int handle_reply_error (struct nbd_handle *h) { uint32_t len; uint32_t reply; len = be32toh (h->sbuf.or.option_reply.replylen); reply = be32toh (h->sbuf.or.option_reply.reply); if (!NBD_REP_IS_ERR (reply)) { set_error (0, "handshake: unexpected option reply type %d", reply); return -1; } assert (NBD_MAX_STRING < sizeof h->sbuf.or.payload); if (len > NBD_MAX_STRING) { set_error (0, "handshake: option error string too long"); return -1; } if (len > 0) debug (h, "handshake: server error message: %.*s", (int)len, h->sbuf.or.payload.err_msg); return 0; } /* State machine for parsing the fixed newstyle handshake. */ STATE_MACHINE { NEWSTYLE.START: if (h->opt_mode) { /* NEWSTYLE can be entered multiple times, from MAGIC.CHECK_MAGIC * (h->opt_current is 0, run through OPT_STRUCTURED_REPLY for * opt_mode, or OPT_GO otherwise) and during various nbd_opt_* * calls during NEGOTIATING (h->opt_current is set, run just the * states needed). Each previous state has informed us what we * still need to do. */ switch (h->opt_current) { case NBD_OPT_GO: case NBD_OPT_INFO: if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) SET_NEXT_STATE (%OPT_EXPORT_NAME.START); else SET_NEXT_STATE (%OPT_META_CONTEXT.START); return 0; case NBD_OPT_LIST: SET_NEXT_STATE (%OPT_LIST.START); return 0; case NBD_OPT_ABORT: if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { SET_NEXT_STATE (%.DEAD); set_error (ENOTSUP, "handshake: server is not using fixed newstyle"); return 0; } SET_NEXT_STATE (%PREPARE_OPT_ABORT); return 0; case NBD_OPT_LIST_META_CONTEXT: case NBD_OPT_SET_META_CONTEXT: SET_NEXT_STATE (%OPT_META_CONTEXT.START); return 0; case NBD_OPT_STRUCTURED_REPLY: SET_NEXT_STATE (%OPT_STRUCTURED_REPLY.START); return 0; case NBD_OPT_EXTENDED_HEADERS: SET_NEXT_STATE (%OPT_EXTENDED_HEADERS.START); return 0; case NBD_OPT_STARTTLS: SET_NEXT_STATE (%OPT_STARTTLS.START); return 0; case 0: break; default: abort (); } } assert (h->opt_current == 0); h->rbuf = &h->sbuf; h->rlen = sizeof h->sbuf.gflags; SET_NEXT_STATE (%RECV_GFLAGS); return 0; NEWSTYLE.RECV_GFLAGS: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK_GFLAGS); } return 0; NEWSTYLE.CHECK_GFLAGS: uint32_t cflags; h->gflags &= be16toh (h->sbuf.gflags); if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0 && h->tls == LIBNBD_TLS_REQUIRE) { SET_NEXT_STATE (%.DEAD); set_error (ENOTSUP, "handshake: server is not using fixed newstyle, " "but handle TLS setting is 'require' (2)"); return 0; } if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) h->protocol = "newstyle"; else h->protocol = "newstyle-fixed"; cflags = h->gflags; h->sbuf.cflags = htobe32 (cflags); h->wbuf = &h->sbuf; h->wlen = 4; SET_NEXT_STATE (%SEND_CFLAGS); return 0; NEWSTYLE.SEND_CFLAGS: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: /* Start sending options. */ if ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) == 0) { if (h->opt_mode) SET_NEXT_STATE (%.NEGOTIATING); else SET_NEXT_STATE (%OPT_EXPORT_NAME.START); } else SET_NEXT_STATE (%OPT_STARTTLS.START); } return 0; NEWSTYLE.PREPARE_OPT_ABORT: assert ((h->gflags & LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE) != 0); h->sbuf.option.version = htobe64 (NBD_NEW_VERSION); h->sbuf.option.option = htobe32 (NBD_OPT_ABORT); h->sbuf.option.optlen = htobe32 (0); h->chunks_sent++; h->wbuf = &h->sbuf; h->wlen = sizeof h->sbuf.option; SET_NEXT_STATE (%SEND_OPT_ABORT); return 0; NEWSTYLE.SEND_OPT_ABORT: switch (send_from_wbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%SEND_OPTION_SHUTDOWN); } return 0; NEWSTYLE.SEND_OPTION_SHUTDOWN: /* We don't care if the server replies to NBD_OPT_ABORT. However, * unless we are in opt mode, we want to preserve the error message * from a failed OPT_GO by moving to DEAD instead. */ if (h->sock->ops->shut_writes (h, h->sock)) { if (h->opt_mode) SET_NEXT_STATE (%.CLOSED); else SET_NEXT_STATE (%.DEAD); } return 0; NEWSTYLE.FINISHED: SET_NEXT_STATE (%.READY); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-oldstyle.c0000644000175000017500000000455714525371754014032 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for parsing the oldstyle handshake. */ STATE_MACHINE { OLDSTYLE.START: /* We've already read the first 16 bytes of the handshake, we must * now read the remainder. */ h->rbuf = &h->sbuf.old_handshake; h->rlen = sizeof h->sbuf.old_handshake; h->rbuf = (char *)h->rbuf + 16; h->rlen -= 16; SET_NEXT_STATE (%RECV_REMAINING); return 0; OLDSTYLE.RECV_REMAINING: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 0: SET_NEXT_STATE (%CHECK); } return 0; OLDSTYLE.CHECK: uint64_t exportsize; uint16_t gflags, eflags; /* We already checked the magic and version in MAGIC.CHECK_MAGIC. */ exportsize = be64toh (h->sbuf.old_handshake.exportsize); gflags = be16toh (h->sbuf.old_handshake.gflags); eflags = be16toh (h->sbuf.old_handshake.eflags); /* Server is unable to upgrade to TLS. If h->tls is not 'require' (2) * then we can continue unencrypted. */ if (h->tls == LIBNBD_TLS_REQUIRE) { SET_NEXT_STATE (%.DEAD); set_error (ENOTSUP, "handshake: server is oldstyle, " "but handle TLS setting is 'require' (2)"); return 0; } h->gflags = gflags; debug (h, "gflags: 0x%" PRIx16, gflags); if (gflags) { set_error (0, "handshake: oldstyle server should not set gflags"); SET_NEXT_STATE (%.DEAD); return 0; } if (nbd_internal_set_size_and_flags (h, exportsize, eflags) == -1) { SET_NEXT_STATE (%.DEAD); return 0; } nbd_internal_set_payload (h); h->protocol = "oldstyle"; SET_NEXT_STATE (%.READY); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-reply-chunk.c0000644000175000017500000005572614525371754014440 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for parsing structured reply chunk payloads from the server. */ #include #include #include #include "minmax.h" /* Structured reply must be completely inside the bounds of the * requesting command. */ static bool structured_reply_in_bounds (uint64_t offset, uint32_t length, const struct command *cmd) { if (offset < cmd->offset || offset >= cmd->offset + cmd->count || offset + length > cmd->offset + cmd->count) { set_error (0, "range of structured reply is out of bounds, " "offset=%" PRIu64 ", cmd->offset=%" PRIu64 ", " "length=%" PRIu32 ", cmd->count=%" PRIu64 ": " "this is likely to be a bug in the NBD server", offset, cmd->offset, length, cmd->count); return false; } return true; } /* Return true if payload length of block status reply is valid. */ static bool bs_reply_length_ok (uint16_t type, uint32_t length) { size_t prefix_len; size_t extent_len; if (type == NBD_REPLY_TYPE_BLOCK_STATUS) { prefix_len = sizeof (struct nbd_chunk_block_status_32); extent_len = sizeof (struct nbd_block_descriptor_32); } else { assert (type == NBD_REPLY_TYPE_BLOCK_STATUS_EXT); prefix_len = sizeof (struct nbd_chunk_block_status_64); extent_len = sizeof (struct nbd_block_descriptor_64); } /* At least one descriptor is needed after id prefix */ if (length < prefix_len + extent_len) return false; /* There must be an integral number of extents */ length -= prefix_len; if (length % extent_len != 0) return false; return true; } STATE_MACHINE { REPLY.CHUNK_REPLY.START: struct command *cmd = h->reply_cmd; uint16_t flags, type; uint64_t length; uint64_t offset = -1; flags = be16toh (h->sbuf.reply.hdr.structured.flags); type = be16toh (h->sbuf.reply.hdr.structured.type); if (h->extended_headers) { length = be64toh (h->sbuf.reply.hdr.extended.length); offset = be64toh (h->sbuf.reply.hdr.extended.offset); } else length = be32toh (h->sbuf.reply.hdr.structured.length); /* Reject a server that replies with too much information, but don't * reject a single structured reply to NBD_CMD_READ on the largest * size we were willing to send. The most likely culprit is a server * that replies with block status with way too many extents, but any * oversized reply is going to take long enough to resync that it is * not worth keeping the connection alive. */ if (length > MAX_REQUEST_SIZE + sizeof h->sbuf.reply.payload.offset_data) { set_error (0, "invalid server reply length %" PRIu64, length); SET_NEXT_STATE (%.DEAD); return 0; } /* Skip an unexpected structured reply, including to an unknown cookie. */ if (cmd == NULL || !h->structured_replies || (h->extended_headers && offset != cmd->offset)) goto resync; h->payload_left = length; switch (type) { case NBD_REPLY_TYPE_NONE: if (length != 0 || !(flags & NBD_REPLY_FLAG_DONE)) goto resync; SET_NEXT_STATE (%FINISH); break; case NBD_REPLY_TYPE_OFFSET_DATA: /* The spec states that 0-length requests are unspecified, but * 0-length replies are broken. Still, it's easy enough to support * them as an extension, so we use < instead of <=. */ if (cmd->type != NBD_CMD_READ || length < sizeof h->sbuf.reply.payload.offset_data) goto resync; h->rbuf = &h->sbuf.reply.payload.offset_data; h->rlen = sizeof h->sbuf.reply.payload.offset_data; h->payload_left -= h->rlen; SET_NEXT_STATE (%RECV_OFFSET_DATA); break; case NBD_REPLY_TYPE_OFFSET_HOLE: if (cmd->type != NBD_CMD_READ || length != sizeof h->sbuf.reply.payload.offset_hole) goto resync; h->rbuf = &h->sbuf.reply.payload.offset_hole; h->rlen = sizeof h->sbuf.reply.payload.offset_hole; h->payload_left -= h->rlen; SET_NEXT_STATE (%RECV_OFFSET_HOLE); break; case NBD_REPLY_TYPE_BLOCK_STATUS: case NBD_REPLY_TYPE_BLOCK_STATUS_EXT: if (cmd->type != NBD_CMD_BLOCK_STATUS || !h->meta_valid || h->meta_contexts.len == 0 || !bs_reply_length_ok (type, length)) goto resync; ASSERT_MEMBER_ALIAS (struct command_cb, fn.extent32, fn.extent64); assert (CALLBACK_IS_NOT_NULL (cmd->cb.fn.extent32)); if (h->extended_headers != (type == NBD_REPLY_TYPE_BLOCK_STATUS_EXT)) { debug (h, "wrong block status reply type detected, " "this is probably a server bug"); if (cmd->error == 0) cmd->error = EPROTO; } /* Start by reading the context ID. */ h->rbuf = &h->sbuf.reply.payload; if (type == NBD_REPLY_TYPE_BLOCK_STATUS) h->rlen = sizeof h->sbuf.reply.payload.bs_hdr_32; else h->rlen = sizeof h->sbuf.reply.payload.bs_hdr_64; SET_NEXT_STATE (%RECV_BS_HEADER); break; default: if (NBD_REPLY_TYPE_IS_ERR (type)) { /* Any payload shorter than uint32_t cannot even carry an errno * value; anything longer, even if it is not long enough to be * compliant, will favor the wire error over EPROTO during more * length checks in RECV_ERROR_MESSAGE and RECV_ERROR_TAIL. */ if (length < sizeof h->sbuf.reply.payload.error.error.error) goto resync; h->rbuf = &h->sbuf.reply.payload.error.error; h->rlen = MIN (length, sizeof h->sbuf.reply.payload.error.error); SET_NEXT_STATE (%RECV_ERROR); } else goto resync; break; } return 0; resync: h->rbuf = NULL; h->rlen = h->payload_left; h->payload_left = 0; SET_NEXT_STATE (%RESYNC); return 0; REPLY.CHUNK_REPLY.RECV_ERROR: struct command *cmd = h->reply_cmd; uint32_t length, msglen, error; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: length = h->payload_left; h->payload_left -= MIN (length, sizeof h->sbuf.reply.payload.error.error); assert (length >= sizeof h->sbuf.reply.payload.error.error.error); assert (cmd); if (length < sizeof h->sbuf.reply.payload.error.error) goto resync; msglen = be16toh (h->sbuf.reply.payload.error.error.len); if (msglen > h->payload_left || msglen > sizeof h->sbuf.reply.payload.error.msg) goto resync; h->rbuf = h->sbuf.reply.payload.error.msg; h->rlen = msglen; h->payload_left -= h->rlen; SET_NEXT_STATE (%RECV_ERROR_MESSAGE); } return 0; resync: /* Favor the error packet's errno over RESYNC's EPROTO. */ error = be32toh (h->sbuf.reply.payload.error.error.error); if (cmd->error == 0) cmd->error = nbd_internal_errno_of_nbd_error (error); h->rbuf = NULL; h->rlen = h->payload_left; h->payload_left = 0; SET_NEXT_STATE (%RESYNC); return 0; REPLY.CHUNK_REPLY.RECV_ERROR_MESSAGE: uint32_t msglen; uint16_t type; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: msglen = be16toh (h->sbuf.reply.payload.error.error.len); type = be16toh (h->sbuf.reply.hdr.structured.type); if (msglen) debug (h, "structured error server message: %.*s", (int)msglen, h->sbuf.reply.payload.error.msg); /* Special case two specific errors; silently ignore tail for all others */ h->rbuf = NULL; h->rlen = h->payload_left; switch (type) { case NBD_REPLY_TYPE_ERROR: if (h->payload_left != 0) debug (h, "ignoring unexpected slop after error message, " "the server may have a bug"); break; case NBD_REPLY_TYPE_ERROR_OFFSET: if (h->payload_left != sizeof h->sbuf.reply.payload.error.offset) debug (h, "unable to safely extract error offset, " "the server may have a bug"); else h->rbuf = &h->sbuf.reply.payload.error.offset; break; } h->payload_left = 0; SET_NEXT_STATE (%RECV_ERROR_TAIL); } return 0; REPLY.CHUNK_REPLY.RECV_ERROR_TAIL: struct command *cmd = h->reply_cmd; uint32_t error; uint16_t type; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: error = be32toh (h->sbuf.reply.payload.error.error.error); type = be16toh (h->sbuf.reply.hdr.structured.type); assert (cmd); /* guaranteed by CHECK */ /* The spec requires the server to send a non-zero error */ error = nbd_internal_errno_of_nbd_error (error); if (error == 0) { debug (h, "server forgot to set error; using EPROTO"); error = EPROTO; } /* Sanity check that any error offset is in range, then invoke * user callback if present. Ignore the offset if it was bogus. */ if (type == NBD_REPLY_TYPE_ERROR_OFFSET && h->rbuf) { uint64_t offset = be64toh (h->sbuf.reply.payload.error.offset); if (structured_reply_in_bounds (offset, 0, cmd) && cmd->type == NBD_CMD_READ && CALLBACK_IS_NOT_NULL (cmd->cb.fn.chunk)) { int scratch = error; /* Different from successful reads: inform the callback about the * current error rather than any earlier one. If the callback fails * without setting errno, then use the server's error below. */ if (CALL_CALLBACK (cmd->cb.fn.chunk, (char *)cmd->data + (offset - cmd->offset), 0, offset, LIBNBD_READ_ERROR, &scratch) == -1) if (cmd->error == 0) cmd->error = scratch; } else debug (h, "no use for error offset %" PRIu64, offset); } /* Preserve first error encountered */ if (cmd->error == 0) cmd->error = error; SET_NEXT_STATE (%FINISH); } return 0; REPLY.CHUNK_REPLY.RECV_OFFSET_DATA: struct command *cmd = h->reply_cmd; uint64_t offset; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: offset = be64toh (h->sbuf.reply.payload.offset_data.offset); assert (cmd); /* guaranteed by CHECK */ assert (cmd->data && cmd->type == NBD_CMD_READ); /* Is the data within bounds? */ if (! structured_reply_in_bounds (offset, h->payload_left, cmd)) { SET_NEXT_STATE (%.DEAD); return 0; } if (cmd->data_seen <= cmd->count) cmd->data_seen += h->payload_left; /* Now this is the byte offset in the read buffer. */ offset -= cmd->offset; /* Set up to receive the data directly to the user buffer. */ h->rbuf = (char *)cmd->data + offset; h->rlen = h->payload_left; SET_NEXT_STATE (%RECV_OFFSET_DATA_DATA); } return 0; REPLY.CHUNK_REPLY.RECV_OFFSET_DATA_DATA: struct command *cmd = h->reply_cmd; uint64_t offset; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: offset = be64toh (h->sbuf.reply.payload.offset_data.offset); assert (cmd); /* guaranteed by CHECK */ if (CALLBACK_IS_NOT_NULL (cmd->cb.fn.chunk)) { int error = cmd->error; if (CALL_CALLBACK (cmd->cb.fn.chunk, (char *)cmd->data + (offset - cmd->offset), h->payload_left, offset, LIBNBD_READ_DATA, &error) == -1) if (cmd->error == 0) cmd->error = error ? error : EPROTO; } h->payload_left = 0; SET_NEXT_STATE (%FINISH); } return 0; REPLY.CHUNK_REPLY.RECV_OFFSET_HOLE: struct command *cmd = h->reply_cmd; uint64_t offset; uint32_t length; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: offset = be64toh (h->sbuf.reply.payload.offset_hole.offset); length = be32toh (h->sbuf.reply.payload.offset_hole.length); assert (cmd); /* guaranteed by CHECK */ assert (cmd->data && cmd->type == NBD_CMD_READ); /* Is the data within bounds? */ if (! structured_reply_in_bounds (offset, length, cmd)) { SET_NEXT_STATE (%.DEAD); return 0; } if (cmd->data_seen <= cmd->count) cmd->data_seen += length; /* Now this is the byte offset in the read buffer. */ offset -= cmd->offset; /* The spec states that 0-length requests are unspecified, but * 0-length replies are broken. Still, it's easy enough to support * them as an extension, and this works even when length == 0. */ if (!cmd->initialized) memset ((char *)cmd->data + offset, 0, length); if (CALLBACK_IS_NOT_NULL (cmd->cb.fn.chunk)) { int error = cmd->error; if (CALL_CALLBACK (cmd->cb.fn.chunk, (char *)cmd->data + offset, length, cmd->offset + offset, LIBNBD_READ_HOLE, &error) == -1) if (cmd->error == 0) cmd->error = error ? error : EPROTO; } SET_NEXT_STATE (%FINISH); } return 0; REPLY.CHUNK_REPLY.RECV_BS_HEADER: struct command *cmd = h->reply_cmd; uint16_t type; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: type = be16toh (h->sbuf.reply.hdr.structured.type); assert (cmd); /* guaranteed by CHECK */ assert (cmd->type == NBD_CMD_BLOCK_STATUS); assert (bs_reply_length_ok (type, h->payload_left)); STATIC_ASSERT (sizeof (struct nbd_block_descriptor_32) == 2 * sizeof *h->bs_cooked.narrow, _block_desc_is_multiple_of_bs_entry); ASSERT_MEMBER_ALIAS (union chunk_payload, bs_hdr_32.context_id, bs_hdr_64.context_id); if (type == NBD_REPLY_TYPE_BLOCK_STATUS) { h->payload_left -= sizeof h->sbuf.reply.payload.bs_hdr_32; assert (h->payload_left % sizeof *h->bs_raw.narrow == 0); h->bs_count = h->payload_left / sizeof *h->bs_raw.narrow; } else { assert (type == NBD_REPLY_TYPE_BLOCK_STATUS_EXT); h->payload_left -= sizeof h->sbuf.reply.payload.bs_hdr_64; assert (h->payload_left % sizeof *h->bs_raw.wide == 0); h->bs_count = h->payload_left / sizeof *h->bs_raw.wide; if (h->bs_count != be32toh (h->sbuf.reply.payload.bs_hdr_64.count)) { h->rbuf = NULL; h->rlen = h->payload_left; h->payload_left = 0; SET_NEXT_STATE (%RESYNC); return 0; } } free (h->bs_raw.storage); free (h->bs_cooked.storage); h->bs_raw.storage = malloc (h->payload_left); if (cmd->cb.wide) h->bs_cooked.storage = malloc (h->bs_count * sizeof *h->bs_cooked.wide); else h->bs_cooked.storage = malloc (2 * h->bs_count * sizeof *h->bs_cooked.narrow); if (h->bs_raw.storage == NULL || h->bs_cooked.storage == NULL) { SET_NEXT_STATE (%.DEAD); set_error (errno, "malloc"); free (h->bs_raw.storage); free (h->bs_cooked.storage); h->bs_raw.storage = NULL; h->bs_cooked.storage = NULL; return 0; } h->rbuf = h->bs_raw.storage; h->rlen = h->payload_left; h->payload_left = 0; SET_NEXT_STATE (%RECV_BS_ENTRIES); } return 0; REPLY.CHUNK_REPLY.RECV_BS_ENTRIES: struct command *cmd = h->reply_cmd; uint16_t type; size_t i; uint32_t context_id; int error; const char *name; uint64_t orig_len, len, flags; uint64_t total, cap; bool stop; int ret; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: type = be16toh (h->sbuf.reply.hdr.structured.type); assert (cmd); /* guaranteed by CHECK */ assert (cmd->type == NBD_CMD_BLOCK_STATUS); assert (CALLBACK_IS_NOT_NULL (cmd->cb.fn.extent32)); assert (h->bs_count && h->bs_raw.storage); assert (h->meta_valid); /* Look up the context ID. Depends on ASSERT_MEMBER_ALIAS above. */ context_id = be32toh (h->sbuf.reply.payload.bs_hdr_32.context_id); for (i = 0; i < h->meta_contexts.len; ++i) if (context_id == h->meta_contexts.ptr[i].context_id) break; SET_NEXT_STATE (%FINISH); if (i == h->meta_contexts.len) { /* Emit a debug message, but ignore it. */ debug (h, "server sent unexpected meta context ID %" PRIu32, context_id); break; } /* Be careful to avoid arithmetic overflow, even when the user * disabled LIBNBD_STRICT_BOUNDS to pass a suspect offset, or the * server returns suspect lengths or advertised exportsize larger * than 63 bits. We guarantee that callbacks will not see a * length exceeding INT64_MAX or the advertised h->exportsize. */ name = h->meta_contexts.ptr[i].name; total = cap = 0; if (cmd->offset <= h->exportsize) cap = h->exportsize - cmd->offset; /* Need to byte-swap the entries returned into the callback size * requested by the caller. The NBD protocol allows truncation as * long as progress is made; the client cannot tell the difference * between a server's truncation or if we truncate on a length we * don't like. We stop iterating on a zero-length extent (error * only if it is the first extent), on an extent beyond the * exportsize (unconditional error after truncating to * exportsize), and on an extent exceeding a callback length limit * (no error, and to simplify alignment, we truncate to 64M before * the limit); but we do not diagnose issues with the server's * length alignments, flag values, nor compliance with the REQ_ONE * command flag. */ for (i = 0, stop = false; i < h->bs_count && !stop; ++i) { if (type == NBD_REPLY_TYPE_BLOCK_STATUS) { orig_len = len = be32toh (h->bs_raw.narrow[i].length); flags = be32toh (h->bs_raw.narrow[i].status_flags); } else { orig_len = len = be64toh (h->bs_raw.wide[i].length); if (len > INT64_MAX) { /* Pick an aligned value rather than overflowing 64-bit * callback; this does not require an error. */ stop = true; len = INT64_MAX + 1ULL - MAX_REQUEST_SIZE; } if (len > UINT32_MAX && !cmd->cb.wide) { /* Pick an aligned value rather than overflowing 32-bit * callback; this does not require an error. */ stop = true; len = (uint32_t)-MAX_REQUEST_SIZE; } flags = be64toh (h->bs_raw.wide[i].status_flags); if (flags > UINT32_MAX && !cmd->cb.wide) { stop = true; if (i > 0) break; /* Skip this and later extents; we already made progress */ /* Expose this extent as an error; we made no progress */ cmd->error = cmd->error ? : EOVERFLOW; flags = (uint32_t)flags; } } assert (total <= cap); if (len > cap - total) { /* Truncate and expose this extent as an error */ len = cap - total; stop = true; cmd->error = cmd->error ? : EPROTO; } if (len == 0) { stop = true; if (i > 0) break; /* Skip this and later extents; we already made progress */ /* Expose this extent as an error; we made no progress */ cmd->error = cmd->error ? : EPROTO; } total += len; if (cmd->cb.wide) { h->bs_cooked.wide[i].length = len; h->bs_cooked.wide[i].flags = flags; } else { assert ((len | flags) <= UINT32_MAX); h->bs_cooked.narrow[i * 2] = len; h->bs_cooked.narrow[i * 2 + 1] = flags; } } /* Call the caller's extent function. Yes, our 32-bit public API * foolishly tracks the number of uint32_t instead of block * descriptors; see _block_desc_is_multiple_of_bs_entry above. */ if (stop) debug (h, "truncating server's response at unexpected extent length %" PRIu64 " and total %" PRIu64 " near extent %zu", orig_len, total, i); error = cmd->error; if (cmd->cb.wide) ret = CALL_CALLBACK (cmd->cb.fn.extent64, name, cmd->offset, h->bs_cooked.wide, i, &error); else ret = CALL_CALLBACK (cmd->cb.fn.extent32, name, cmd->offset, h->bs_cooked.narrow, i * 2, &error); if (ret == -1 && cmd->error == 0) cmd->error = error ? error : EPROTO; } return 0; REPLY.CHUNK_REPLY.RESYNC: struct command *cmd = h->reply_cmd; uint16_t type; uint64_t length; uint64_t offset = -1; assert (h->rbuf == NULL); switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: /* If this reply is to an unknown command, FINISH_COMMAND will * diagnose and ignore the server bug. Otherwise, ensure the * pending command sees a failure of EPROTO if it does not already * have an error. */ if (cmd == NULL) { SET_NEXT_STATE (%^FINISH_COMMAND); return 0; } type = be16toh (h->sbuf.reply.hdr.structured.type); if (h->extended_headers) { length = be64toh (h->sbuf.reply.hdr.extended.length); offset = be64toh (h->sbuf.reply.hdr.extended.offset); if (offset != cmd->offset) debug (h, "unexpected reply offset %" PRIu64 " for cookie %" PRIu64 " and command %" PRIu32 ", this is probably a server bug", length, cmd->cookie, cmd->type); else offset = -1; } else length = be32toh (h->sbuf.reply.hdr.structured.length); if (offset == -1) debug (h, "unexpected reply type %u or payload length %" PRIu64 " for cookie %" PRIu64 " and command %" PRIu32 ", this is probably a server bug", type, length, cmd->cookie, cmd->type); if (cmd->error == 0) cmd->error = EPROTO; SET_NEXT_STATE (%FINISH); } return 0; REPLY.CHUNK_REPLY.FINISH: uint16_t flags; assert (h->payload_left == 0); flags = be16toh (h->sbuf.reply.hdr.structured.flags); if (flags & NBD_REPLY_FLAG_DONE) { SET_NEXT_STATE (%^FINISH_COMMAND); } else { h->reply_cmd = NULL; SET_NEXT_STATE (%.READY); } return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-reply-simple.c0000644000175000017500000000662114525371754014607 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* State machine for parsing simple replies from the server. */ STATE_MACHINE { REPLY.SIMPLE_REPLY.START: struct command *cmd = h->reply_cmd; uint32_t error; error = be32toh (h->sbuf.reply.hdr.simple.error); if (cmd == NULL) { /* Unexpected reply. If error was set or we have structured * replies, we know there should be no payload, so the next byte * on the wire (if any) will be another reply, and we can let * FINISH_COMMAND diagnose/ignore the server bug. If not, we lack * context to know whether the server thinks it was responding to * NBD_CMD_READ, so it is safer to move to DEAD now than to risk * consuming a server's potential data payload as a reply stream * (even though we would be likely to produce a magic number * mismatch on the next pass that would also move us to DEAD). */ if (error || h->structured_replies) SET_NEXT_STATE (%^FINISH_COMMAND); else { uint64_t cookie = be64toh (h->sbuf.reply.hdr.simple.cookie); SET_NEXT_STATE (%.DEAD); set_error (EPROTO, "no matching cookie %" PRIu64 " found for server reply, " "this is probably a server bug", cookie); } return 0; } /* Although a server with structured replies negotiated is in error * for using a simple reply to NBD_CMD_READ, we can cope with the * packet, but diagnose it by failing the read with EPROTO. */ if (cmd->type == NBD_CMD_READ && h->structured_replies) { debug (h, "server sent unexpected simple reply for read"); if (cmd->error == 0) cmd->error = EPROTO; } error = nbd_internal_errno_of_nbd_error (error); if (cmd->error == 0) cmd->error = error; if (error == 0 && cmd->type == NBD_CMD_READ) { h->rbuf = cmd->data; h->rlen = cmd->count; cmd->data_seen += cmd->count; SET_NEXT_STATE (%RECV_READ_PAYLOAD); } else { SET_NEXT_STATE (%^FINISH_COMMAND); } return 0; REPLY.SIMPLE_REPLY.RECV_READ_PAYLOAD: struct command *cmd = h->reply_cmd; switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: /* guaranteed by START */ assert (cmd); if (CALLBACK_IS_NOT_NULL (cmd->cb.fn.chunk)) { int error = cmd->error; if (CALL_CALLBACK (cmd->cb.fn.chunk, cmd->data, cmd->count, cmd->offset, LIBNBD_READ_DATA, &error) == -1) cmd->error = error ? error : EPROTO; } SET_NEXT_STATE (%^FINISH_COMMAND); } return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/states-reply.c0000644000175000017500000002466714525371754013332 /* nbd client library in userspace: state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #define ASSERT_MEMBER_ALIAS(type, member_a, member_b) \ STATIC_ASSERT (offsetof (type, member_a) == offsetof (type, member_b) && \ sizeof ((type *)NULL)->member_a == \ sizeof ((type *)NULL)->member_b, member_alias) /* State machine for receiving reply messages from the server. * * Note that we never block while in this sub-group. If there is * insufficient data to finish parsing a reply, requiring us to block * until POLLIN, we instead track where in the state machine we left * off, then return to READY to actually block. Then, on entry to * REPLY.START, we can tell if this is the start of a new reply (rlen * is 0, stay put), a continuation of the preamble (reply_state is * STATE_START, resume with RECV_REPLY), or a continuation from any * other location (reply_state contains the state to jump to). */ static void save_reply_state (struct nbd_handle *h) { assert (h->rlen); assert (h->reply_state == STATE_START); h->reply_state = get_next_state (h); assert (h->reply_state != STATE_START); } STATE_MACHINE { REPLY.START: /* If rlen is non-zero, we are resuming an earlier reply cycle. */ if (h->rlen > 0) { if (h->reply_state != STATE_START) { assert (nbd_internal_is_state_processing (h->reply_state)); SET_NEXT_STATE (h->reply_state); h->reply_state = STATE_START; } else SET_NEXT_STATE (%RECV_REPLY); return 0; } /* This state is entered when a read notification is received in the * READY state. Therefore we know the socket is readable here. * Reading a zero length now would indicate that the socket has been * closed by the server and so we should jump to the CLOSED state. * However recv_into_rbuf will fail in this case, so test it as a * special case. */ ssize_t r; /* With extended headers, there is only one size to read, so we can * do it all in one syscall. But for older structured replies, we * don't know if we have a simple or structured reply until we read * the magic number, requiring a two-part read with * CHECK_REPLY_MAGIC below. This works because the structured_reply * header is larger, and because the last member of a simple reply, * cookie, is coincident between all three structs (intentional * design decisions in the NBD spec when structured and extended * replies were added). */ ASSERT_MEMBER_ALIAS (union reply_header, simple.magic, magic); ASSERT_MEMBER_ALIAS (union reply_header, simple.cookie, cookie); ASSERT_MEMBER_ALIAS (union reply_header, structured.magic, magic); ASSERT_MEMBER_ALIAS (union reply_header, structured.cookie, cookie); ASSERT_MEMBER_ALIAS (union reply_header, extended.magic, magic); ASSERT_MEMBER_ALIAS (union reply_header, extended.cookie, cookie); assert (h->reply_cmd == NULL); assert (h->rlen == 0); h->rbuf = &h->sbuf.reply.hdr; if (h->extended_headers) h->rlen = sizeof h->sbuf.reply.hdr.extended; else h->rlen = sizeof h->sbuf.reply.hdr.simple; r = h->sock->ops->recv (h, h->sock, h->rbuf, h->rlen); if (r == -1) { /* In theory this should never happen because when we enter this * state we should have notification that the socket is ready to * read. However it can in fact happen when using TLS in * conjunction with a slow, remote server. If it does happen, * ignore it - we will reenter this same state again next time the * socket is ready to read. */ if (errno == EAGAIN || errno == EWOULDBLOCK) return 0; /* sock->ops->recv called set_error already. */ SET_NEXT_STATE (%.DEAD); return 0; } if (r == 0) { SET_NEXT_STATE (%.CLOSED); return 0; } #ifdef DUMP_PACKETS nbd_internal_hexdump (h->rbuf, r, stderr); #endif h->bytes_received += r; h->rbuf = (char *)h->rbuf + r; h->rlen -= r; SET_NEXT_STATE (%RECV_REPLY); return 0; REPLY.RECV_REPLY: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: SET_NEXT_STATE (%.READY); /* Special case: if we have a short read, but got at least far * enough to decode the magic number, we can check if the server * is matching our expectations. This lets us avoid deadlocking if * we are blocked waiting for a 32-byte extended reply, while a * buggy server only sent a shorter simple or structured reply. * Magic number checks here must be repeated in CHECK_REPLY_MAGIC, * since we do not always encounter a short read. */ if (h->extended_headers && (char *)h->rbuf >= (char *)&h->sbuf.reply.hdr + sizeof h->sbuf.reply.hdr.magic) { uint32_t magic = be32toh (h->sbuf.reply.hdr.magic); if (magic != NBD_EXTENDED_REPLY_MAGIC) { SET_NEXT_STATE (%.DEAD); /* We've probably lost synchronization. */ set_error (0, "invalid or unexpected reply magic 0x%" PRIx32, magic); } } return 0; case 0: SET_NEXT_STATE (%CHECK_REPLY_MAGIC); } return 0; REPLY.CHECK_REPLY_MAGIC: struct command *cmd; uint32_t magic; uint64_t cookie; magic = be32toh (h->sbuf.reply.hdr.magic); switch (magic) { case NBD_SIMPLE_REPLY_MAGIC: if (h->extended_headers) /* Server is non-compliant, and we've already read more bytes * than a simple header contains; no recovery possible */ goto invalid; /* All other payload checks handled in the simple payload engine */ SET_NEXT_STATE (%SIMPLE_REPLY.START); break; case NBD_STRUCTURED_REPLY_MAGIC: if (h->extended_headers) /* Server is non-compliant, and we've already read more bytes * than a structured header contains; no recovery possible */ goto invalid; /* We've only read the bytes that fill hdr.simple. But * hdr.structured is longer, so prepare to read the remaining * bytes. We depend on the memory aliasing in union sbuf to * overlay the two reply types. */ STATIC_ASSERT (sizeof h->sbuf.reply.hdr.simple == offsetof (struct nbd_structured_reply, length), simple_structured_overlap); assert (h->rbuf == (char *)&h->sbuf + sizeof h->sbuf.reply.hdr.simple); h->rlen = sizeof h->sbuf.reply.hdr.structured; h->rlen -= sizeof h->sbuf.reply.hdr.simple; SET_NEXT_STATE (%RECV_STRUCTURED_REMAINING); break; case NBD_EXTENDED_REPLY_MAGIC: if (!h->extended_headers) /* Server is non-compliant. We could continue reading bytes up * to the length of an extended reply to regain sync, but old * servers are unlikely to send this magic, so it's just as easy * to punt. */ goto invalid; /* All other payload checks handled in the chunk payload engine */ SET_NEXT_STATE (%CHUNK_REPLY.START); break; default: goto invalid; } /* NB: This works for all three reply types, even though we haven't * finished reading a structured header yet, because the cookie is * stored at the same offset. See the ASSERT_MEMBER_ALIAS above in * state REPLY.START that confirmed this. */ h->chunks_received++; cookie = be64toh (h->sbuf.reply.hdr.cookie); /* Find the command amongst the commands in flight. If the server sends * a reply for an unknown cookie, FINISH will diagnose that later. */ for (cmd = h->cmds_in_flight; cmd != NULL; cmd = cmd->next) { if (cmd->cookie == cookie) break; } h->reply_cmd = cmd; return 0; invalid: SET_NEXT_STATE (%.DEAD); /* We've probably lost synchronization. */ set_error (0, "invalid or unexpected reply magic 0x%" PRIx32, magic); #if 0 /* uncomment to see desynchronized data */ nbd_internal_hexdump (&h->sbuf.reply.hdr.simple, sizeof (h->sbuf.reply.hdr.simple), stderr); #endif return 0; REPLY.RECV_STRUCTURED_REMAINING: switch (recv_into_rbuf (h)) { case -1: SET_NEXT_STATE (%.DEAD); return 0; case 1: save_reply_state (h); SET_NEXT_STATE (%.READY); return 0; case 0: SET_NEXT_STATE (%CHUNK_REPLY.START); } return 0; REPLY.FINISH_COMMAND: struct command *prev_cmd, *cmd; uint64_t cookie; bool retire; /* NB: This works for both simple and structured replies because the * handle (our cookie) is stored at the same offset. See the * STATIC_ASSERT above in state REPLY.START that confirmed this. */ cookie = be64toh (h->sbuf.reply.hdr.cookie); /* Find the command amongst the commands in flight. */ for (cmd = h->cmds_in_flight, prev_cmd = NULL; cmd != NULL; prev_cmd = cmd, cmd = cmd->next) { if (cmd->cookie == cookie) break; } assert (h->reply_cmd == cmd); if (cmd == NULL) { debug (h, "skipped reply for unexpected cookie %" PRIu64 ", this is probably a bug in the server", cookie); SET_NEXT_STATE (%.READY); return 0; } retire = cmd->type == NBD_CMD_DISC; h->reply_cmd = NULL; /* Notify the user */ if (CALLBACK_IS_NOT_NULL (cmd->cb.completion)) { int error = cmd->error; int r; assert (cmd->type != NBD_CMD_DISC); r = CALL_CALLBACK (cmd->cb.completion, &error); switch (r) { case -1: if (error) cmd->error = error; break; case 1: retire = true; break; } } /* Move it to the end of the cmds_done list. */ if (prev_cmd != NULL) prev_cmd->next = cmd->next; else h->cmds_in_flight = cmd->next; cmd->next = NULL; if (retire) nbd_internal_retire_and_free_command (cmd); else { if (h->cmds_done_tail != NULL) h->cmds_done_tail = h->cmds_done_tail->next = cmd; else { assert (h->cmds_done == NULL); h->cmds_done = h->cmds_done_tail = cmd; } } h->in_flight--; assert (h->in_flight >= 0); SET_NEXT_STATE (%.READY); return 0; } /* END STATE MACHINE */ libnbd-1.20.3/generator/config.mli0000644000175000017500000000162614525371754012470 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: utilities * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) val gofmt : string option val rustfmt : string option libnbd-1.20.3/generator/config.ml0000644000175000017500000000204514675532466012320 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: utilities * Copyright Red Hat * generator/config.ml. Generated from config.ml.in by configure. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) let gofmt = match "gofmt" with "" | "no" -> None | s -> Some s let rustfmt = match "rustfmt" with "" | "no" -> None | s -> Some s libnbd-1.20.3/generator/utils.mli0000644000175000017500000000545414560164043012354 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: utilities * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Helper functions. *) type comment_style = | CStyle | CPlusPlusStyle | HashStyle | OCamlStyle | HaskellStyle | PODCommentStyle type chan = NoOutput | OutChannel of out_channel | Buffer of Buffer.t type location = string * int (** source location: file, line number *) val failwithf : ('a, unit, string, 'b) format4 -> 'a val filter_map : ('a -> 'b option) -> 'a list -> 'b list val group_by : ('a * 'b) list -> ('a * 'b list) list val uniq : ?cmp:('a -> 'a -> int) -> 'a list -> 'a list val is_prefix : string -> string -> bool val find : string -> string -> int val split : string -> string -> string * string val nsplit : string -> string -> string list val char_mem : char -> string -> bool val span : string -> string -> int val cspan : string -> string -> int val string_starts_with : prefix:string -> string -> bool val array_find_map : ('a -> 'b option) -> 'a array -> 'b option val option_map : ('a -> 'b) -> 'a option -> 'b option val quote : string -> string val spaces : int -> string val macro_name : string -> string val files_equal : string -> string -> bool val generate_header : ?extra_sources:string list -> ?copyright:string -> comment_style -> unit (** Type of code formatter. *) type formatter = | Gofmt | Rustfmt (** Redirect stdout to a file. Possibly formatting the code. *) val output_to : ?formatter:formatter option -> string -> (unit -> 'a) -> unit val pr : ('a, unit, string, unit) format4 -> 'a val pr_wrap : ?maxcol:int -> char -> (unit -> 'a) -> unit val pr_wrap_cstr : ?maxcol:int -> (unit -> 'a) -> unit val pr_wrap_c_comment : ?maxcol:int -> (unit -> 'a) -> unit val output_lineno : unit -> int val output_column : unit -> int val noloc : location val string_of_location : location -> string val line_directive_of_location : location -> string type cache_key = string type cache_value = string list val pod2text : cache_key -> cache_value (* Convert C function name to upper-camel-case name. *) val camel_case : string -> string libnbd-1.20.3/generator/utils.ml0000644000175000017500000004264714560164004012205 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: utilities * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Printf open Unix type location = string * int let noloc = ("", 0) let failwithf fs = ksprintf failwith fs let rec filter_map f = function | [] -> [] | x :: xs -> match f x with | Some y -> y :: filter_map f xs | None -> filter_map f xs (* group_by [1, "foo"; 2, "bar"; 2, "baz"; 2, "biz"; 3, "boo"; 4, "fizz"] * - : (int * string list) list = * [(1, ["foo"]); (2, ["bar"; "baz"; "biz"]); (3, ["boo"]); (4, ["fizz"])] *) let rec group_by = function | [] -> [] | (day1, x1) :: (day2, x2) :: rest when day1 = day2 -> let rest = group_by ((day2, x2) :: rest) in let day, xs = List.hd rest in (day, x1 :: xs) :: List.tl rest | (day, x) :: rest -> (day, [x]) :: group_by rest let uniq ?(cmp = compare) xs = let rec loop acc = function | [] -> acc | [x] -> x :: acc | x :: (y :: _ as xs) when cmp x y = 0 -> loop acc xs | x :: (y :: _ as xs) -> loop (x :: acc) xs in List.rev (loop [] xs) let is_prefix str prefix = let n = String.length prefix in String.length str >= n && String.sub str 0 n = prefix let rec find s sub = let len = String.length s in let sublen = String.length sub in let rec loop i = if i <= len-sublen then ( let rec loop2 j = if j < sublen then ( if s.[i+j] = sub.[j] then loop2 (j+1) else -1 ) else i (* found *) in let r = loop2 0 in if r = -1 then loop (i+1) else r ) else -1 (* not found *) in loop 0 let rec split sep str = let len = String.length sep in let seplen = String.length str in let i = find str sep in if i = -1 then str, "" else ( String.sub str 0 i, String.sub str (i + len) (seplen - i - len) ) and nsplit sep str = if find str sep = -1 then [str] else ( let s1, s2 = split sep str in s1 :: nsplit sep s2 ) let char_mem c str = String.contains str c let span str accept = let len = String.length str in let rec loop i = if i >= len then len else if char_mem (String.unsafe_get str i) accept then loop (i+1) else i in loop 0 let cspan str reject = let len = String.length str in let rec loop i = if i >= len then len else if char_mem (String.unsafe_get str i) reject then i else loop (i+1) in loop 0 (* String.starts_with was added in OCaml 4.13 so we include this for * earlier versions of OCaml. *) let string_starts_with ~prefix s = let len_s = String.length s and len_pre = String.length prefix in let rec aux i = if i = len_pre then true else if String.unsafe_get s i <> String.unsafe_get prefix i then false else aux (i + 1) in len_s >= len_pre && aux 0 (* Array.find_map was added in OCaml 4.13 *) let array_find_map f a = let n = Array.length a in let rec loop i = if i = n then None else match f (Array.unsafe_get a i) with | None -> loop (succ i) | Some _ as r -> r in loop 0 (* Option module was added in OCaml 4.08 *) let option_map f o = match o with None -> None | Some v -> Some (f v) (* Current output line and column. *) let lineno = ref 1 and col = ref 0 type chan = NoOutput | OutChannel of out_channel | Buffer of Buffer.t let chan = ref NoOutput let pr fs = ksprintf ( fun str -> (* Maintain the current output row & column. This only * works for 7 bit ASCII but that's enough for what we need * this for. *) for i = 0 to String.length str - 1 do if String.unsafe_get str i = '\n' then ( col := 0; incr lineno ) else incr col done; match !chan with | NoOutput -> failwithf "use ‘output_to’ to set output" | OutChannel chan -> output_string chan str | Buffer b -> Buffer.add_string b str ) fs let spaces n = String.make n ' ' (* Convert s to macro name by changing '-' to '_' and eliding ':'. *) let macro_name s = let underscore = Str.global_replace (Str.regexp_string "-") "_" s in Str.global_replace (Str.regexp ":") "" underscore (* Save the current output channel and replace it with a temporary buffer while * running ‘code’. Return the buffer. *) let pr_buf code = let old_chan = !chan in let wrapping_col = !col in let b = Buffer.create 1024 in chan := Buffer b; let exn = try code (); None with exn -> Some exn in chan := old_chan; col := wrapping_col; match exn with None -> b | Some exn -> raise exn (* Wrap the output at maxcol, breaking up lines when a 'c' character * occurs. For example: * foobar = a, b, c, d, e, f, g * └── pr_wrap ',' ──┘ * becomes: * foobar = a, b, c, * d, e, f, * g *) let pr_wrap ?(maxcol = 76) c code = (* Save the current output channel and replace it with a * temporary buffer while running ‘code’. Then we wrap the * buffer and write it to the restored channel. *) let b = pr_buf code in let wrapping_col = !col in let lines = nsplit "\n" (Buffer.contents b) in match lines with | [] -> () | line :: rest -> let fields = nsplit (String.make 1 c) line in let maybe_wrap field = (* Note that here we break even if we'd fill ‘maxcol‘ precisely; * that's because... *) if !col > wrapping_col && !col + String.length field >= maxcol then ( pr "\n%s" (spaces wrapping_col); match span field " \t" with | 0 -> field | i -> String.sub field i (String.length field - i) ) else field in let rec loop = function | [] -> () | f :: [] -> let f = maybe_wrap f in pr "%s" f; | f :: fs -> let f = maybe_wrap f in (* ... here we append the separator. *) pr "%s%c" f c; loop fs in loop fields; (* There should really only be one line in the buffer, but * if there are multiple apply wrapping to only the first one. *) pr "%s" (String.concat "\n" rest) (* Wrap the C string literal output at ‘maxcol’, breaking up lines when a space * character occurs. For example: * foobar = "a b c d e f g h i j k" * └── pr_wrap_cstr ───┘ * becomes: * foobar = "a b c d " * "e f g h " * "i j k" * * Note that: * - ‘code’ MUST NOT produce the surrounding quotes, * - ‘code’ MUST NOT produce multiple lines, * - ‘code’ MUST do its own quoting, * - space characters produced by ‘code’ cannot be escaped from wrapping. *) let pr_wrap_cstr ?(maxcol = 76) code = (* Just before entering ‘pr_wrap_cstr’, a leading quote must have been * produced. *) let wrapping_col = !col - 1 in assert (wrapping_col >= 0); let b = pr_buf code in let lines = nsplit "\n" (Buffer.contents b) in match lines with | [] -> () | line :: [] -> let fields = nsplit " " line in let nfields = List.length fields in let indent = spaces wrapping_col in List.iteri (fun i field -> (* Append a space character to each field except the last. *) let f = if i < nfields - 1 then field ^ " " else field in (* Terminate the string literal, insert a line break, and start a * properly indented new string literal, before printing the field, if * (a) the field is not the first one in this string literal, and (b) * printing the field plus a literal-terminating quote would not fit * in ‘maxcol’. * * Note that this way, the literal-terminating quote will always fit * in ‘maxcol’, except when the *sole* field in the literal is too * long. *) if !col > wrapping_col + 1 && !col + (String.length f) + 1 > maxcol then pr "\"\n%s\"" indent; (* Print the field. *) pr "%s" f ) fields | _ -> assert false (* Wrap a string as a (potentially multi-line) C comment. Two things to note: * - the function produces both the starting slash-star and the ending * star-slash, * - newline characters in the input are not allowed. *) let pr_wrap_c_comment ?(maxcol = 80) code = (* The comment delimiters. *) let start = "/* " and sep = " * " and stop = " */" (* Format the comment into a buffer, and append a space character, for forcing * a nonspace -> space transition at the end of the comment, provided the * comment ends with a nonspace. Note that trailing spaces will be swallowed * anyway, as only nonspace -> space transitions produce output. *) and comment = pr_buf (fun () -> code (); pr " ") (* Capture the current column / indentation. *) and indent = spaces !col (* Whether we're currently scanning spaces. We start the loop under the * assumption "scanning spaces" because a space -> nonspace transition does * not try to output anything. *) and scanning_spaces = ref true (* The "buffers" for accumulating spaces and nonspaces. *) and spaces_start = ref 0 and nonspaces_start = ref 0 (* Whether we've needed to insert at least one line break. *) and multiline = ref false in pr "%s" start; for i = 0 to Buffer.length comment - 1 do let ch = Buffer.nth comment i in (* Newlines are invalid... *) assert (ch <> '\n'); match !scanning_spaces, ch with | true, ' ' -> () | true, _ -> (* Space -> nonspace transition. *) scanning_spaces := false; nonspaces_start := i | false, ' ' -> (* Nonspace -> space transition. If the buffered spaces: * * nonspaces_start - spaces_start * * plus the buffered nonspaces: * * i - nonspaces_start * * fit on the current line, then print both buffers. (Note that the sum * of those addends is just (i - spaces_start).) * * Otherwise, insert a line break and a comment line separator, and only * print the nonspaces. *) if !col + (i - !spaces_start) <= maxcol then pr "%s" (Buffer.sub comment !spaces_start (i - !spaces_start)) else ( pr "\n%s%s%s" indent sep (Buffer.sub comment !nonspaces_start (i - !nonspaces_start)); multiline := true ); scanning_spaces := true; spaces_start := i | false, _ -> () done; (* If the comment has fit on a single line, and we've got room left for the * terminator, then place the terminator on the same line. Otherwise, break * the terminator to a new line. *) if not !multiline && !col + String.length stop <= maxcol then pr "%s" stop else pr "\n%s%s" indent stop let output_lineno () = !lineno let output_column () = !col let string_of_location (file, lineno) = sprintf "%s:%d" file lineno let line_directive_of_location (file, lineno) = sprintf "#line %d \"%s\"" lineno file type comment_style = | CStyle | CPlusPlusStyle | HashStyle | OCamlStyle | HaskellStyle | PODCommentStyle let generate_header ?(extra_sources = []) ?(copyright = "Red Hat") comment_style = let inputs = "generator/generator" :: extra_sources in let c = match comment_style with | CStyle -> pr "/* "; " *" | CPlusPlusStyle -> pr "// "; "//" | HashStyle -> pr "# "; "#" | OCamlStyle -> pr "(* "; " *" | HaskellStyle -> pr "{- "; " " | PODCommentStyle -> pr "=begin comment\n\n "; "" in pr "NBD client library in userspace\n"; pr "%s WARNING: THIS FILE IS GENERATED FROM\n" c; pr "%s %s\n" c (String.concat " " inputs); pr "%s ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST.\n" c; pr "%s\n" c; pr "%s Copyright %s\n" c copyright; pr "%s\n" c; pr "%s This library is free software; you can redistribute it and/or\n" c; pr "%s modify it under the terms of the GNU Lesser General Public\n" c; pr "%s License as published by the Free Software Foundation; either\n" c; pr "%s version 2 of the License, or (at your option) any later version.\n" c; pr "%s\n" c; pr "%s This library is distributed in the hope that it will be useful,\n" c; pr "%s but WITHOUT ANY WARRANTY; without even the implied warranty of\n" c; pr "%s MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n" c; pr "%s Lesser General Public License for more details.\n" c; pr "%s\n" c; pr "%s You should have received a copy of the GNU Lesser General Public\n" c; pr "%s License along with this library; if not, write to the Free Software\n" c; pr "%s Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n" c; (match comment_style with | CStyle -> pr " */\n" | CPlusPlusStyle | HashStyle -> () | OCamlStyle -> pr " *)\n" | HaskellStyle -> pr "-}\n" | PODCommentStyle -> pr "\n=end comment\n" ); pr "\n" let quote = Filename.quote let files_equal n1 n2 = let cmd = sprintf "cmp -s %s %s" (quote n1) (quote n2) in match Sys.command cmd with | 0 -> true | 1 -> false | i -> failwithf "%s: failed with error code %d" cmd i type formatter = | Gofmt | Rustfmt let output_to ?(formatter = None) filename k = lineno := 1; col := 0; let filename_new = filename ^ ".new" in let c = open_out filename_new in chan := OutChannel c; k (); close_out c; chan := NoOutput; (match formatter with | Some Gofmt -> (match Config.gofmt with | Some gofmt -> (let cmd = sprintf "%s -w %s" gofmt filename_new in match system cmd with | WEXITED 0 -> () | WEXITED i -> failwithf "gofmt failed with exit code %d" i | WSIGNALED i | WSTOPPED i -> failwithf "gofmt was killed or stopped by signal %d" i ) | None -> () ) | Some Rustfmt -> (match Config.rustfmt with | Some rustfmt -> (let cmd = sprintf "%s %s" rustfmt filename_new in match system cmd with | WEXITED 0 -> () | WEXITED i -> failwithf "rustfmt failed with exit code %d" i | WSIGNALED i | WSTOPPED i -> failwithf "rustfmt was killed or stopped by signal %d" i ) | None -> () ) | None -> ()); (* Is the new file different from the current file? *) if Sys.file_exists filename && files_equal filename filename_new then unlink filename_new (* same, so skip it *) else ( (* different, overwrite old one *) (try chmod filename 0o644 with Unix_error _ -> ()); rename filename_new filename; chmod filename 0o444; printf "written %s\n%!" filename; ) (* Convert POD fragments into plain text. * * For man pages and Perl documentation we can simply use the POD * directly, and that is the best solution. However for other * programming languages we have to convert the POD fragments to * plain text by running it through pod2text. * * The problem is that pod2text is very slow so we must cache * the converted fragments to disk. * * Increment the version in the filename whenever the cache * type changes. *) type cache_key = string (* longdesc *) type cache_value = string list (* list of plain text lines *) let (cache : (cache_key, cache_value) Hashtbl.t), save_cache = let cachefile = "generator/generator-cache.v1" in let cache = try let chan = open_in cachefile in let ret = input_value chan in close_in chan; ret with _ -> printf "Regenerating the cache, this could take a little while ...\n%!"; Hashtbl.create 13 in let save_cache () = let chan = open_out cachefile in output_value chan cache; close_out chan in cache, save_cache let pod2text longdesc = let key : cache_key = longdesc in try Hashtbl.find cache key with Not_found -> let filename, chan = Filename.open_temp_file "pod2text" ".tmp" in fprintf chan "=encoding utf8\n\n"; fprintf chan "=head1 NAME\n\n%s\n" longdesc; close_out chan; let cmd = sprintf "pod2text -w 60 %s" (quote filename) in let chan = open_process_in cmd in let lines = ref [] in let rec loop i = let line = input_line chan in if i = 1 then (* discard first line of output *) loop (i+1) else ( lines := line :: !lines; loop (i+1) ) in let lines : cache_value = try loop 1 with End_of_file -> List.rev !lines in unlink filename; (match close_process_in chan with | WEXITED 0 -> () | WEXITED i -> failwithf "pod2text: process exited with non-zero status (%d)" i | WSIGNALED i | WSTOPPED i -> failwithf "pod2text: process signalled or stopped by signal %d" i ); Hashtbl.add cache key lines; save_cache (); lines let camel_case name = let xs = nsplit "_" name in List.fold_left ( fun a x -> a ^ String.uppercase_ascii (Str.first_chars x 1) ^ String.lowercase_ascii (Str.string_after x 1) ) "" xs libnbd-1.20.3/generator/state_machine.mli0000644000175000017500000000635714525371754014035 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: state machine definition * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* For explanation see generator/README.state-machine.md *) type external_event = | NotifyRead (** fd becomes ready to read *) | NotifyWrite (** fd becomes ready to write *) | CmdCreate (** [nbd_create] function called *) | CmdConnectSockAddr (** [nbd_aio_connect] function called *) | CmdConnectTCP (** [nbd_aio_connect_tcp] *) | CmdConnectCommand (** [nbd_aio_connect_command] *) | CmdConnectSA (** [nbd_aio_connect_systemd_socket_activation]*) | CmdConnectSocket (** [nbd_aio_connect_socket] *) | CmdIssue (** issuing an NBD command *) val all_external_events : external_event list val string_of_external_event : external_event -> string type state = { (** The state name (without prefix). If this has the special name "START" then it is the start state of the current group. Each group can only have one start state. *) name : string; comment : string; (** comment about the state *) (** Possible transitions from this state to a next state. The external events are coded into the state table below. The internal transitions are parsed out of the C code. *) external_events : (external_event * string) list; (** After flattening the state machine, the generator fills in the extra fields in [state.parsed]. *) mutable parsed : parsed_state; } and parsed_state = { (** The hierarchy group prefix. For states in the top level state machine this is an empty list. For states in the next level down this is a single element, and so on. *) prefix : string list; (** Hierarchical state name, like "NEWSTYLE.OPT_STARTTLS.CHECK_REPLY" for use in debug messages etc. *) display_name : string; (** The STATE_* enum used in the generated C code. *) state_enum : string; (** The C code implementing this state. *) loc : Utils.location; code : string; (** Internal transitions, parsed out of the C code. *) internal_transitions : state list; (** External events after resolving them to the destination states. *) events : (external_event * state) list; } (** The type of the hierarchical state machine. *) type state_machine = state_group list and state_group = | Group of string * state_machine (** string is name/prefix of the group *) | State of state val state_machine : state_machine libnbd-1.20.3/generator/state_machine.ml0000644000175000017500000005661714525371754013670 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: state machine definition * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* For explanation see generator/README.state-machine.md *) open Printf type external_event = | NotifyRead | NotifyWrite | CmdCreate | CmdConnectSockAddr | CmdConnectTCP | CmdConnectCommand | CmdConnectSA | CmdConnectSocket | CmdIssue let all_external_events = [NotifyRead; NotifyWrite; CmdCreate; CmdConnectSockAddr; CmdConnectTCP; CmdConnectCommand; CmdConnectSA; CmdConnectSocket; CmdIssue] let string_of_external_event = function | NotifyRead -> "NotifyRead" | NotifyWrite -> "NotifyWrite" | CmdCreate -> "CmdCreate" | CmdConnectSockAddr -> "CmdConnectSockAddr" | CmdConnectTCP -> "CmdConnectTCP" | CmdConnectCommand -> "CmdConnectCommand" | CmdConnectSA -> "CmdConnectSA" | CmdConnectSocket -> "CmdConnectSocket" | CmdIssue -> "CmdIssue" type state = { name : string; comment : string; external_events : (external_event * string) list; mutable parsed : parsed_state; } and parsed_state = { prefix : string list; display_name : string; state_enum : string; loc : Utils.location; code : string; internal_transitions : state list; events : (external_event * state) list; } let default_state = { name = ""; comment = ""; external_events = []; parsed = { prefix = []; display_name = ""; state_enum = ""; loc = Utils.noloc; code = ""; internal_transitions = []; events = [] } } type state_machine = state_group list and state_group = | Group of string * state_machine | State of state (* Top level state machine. *) let rec state_machine = [ State { default_state with name = "START"; comment = "Handle after being initially created"; external_events = [ CmdCreate, ""; CmdConnectSockAddr, "CONNECT.START"; CmdConnectTCP, "CONNECT_TCP.START"; CmdConnectCommand, "CONNECT_COMMAND.START"; CmdConnectSA, "CONNECT_SA.START"; CmdConnectSocket, "MAGIC.START" ]; }; Group ("CONNECT", connect_state_machine); Group ("CONNECT_TCP", connect_tcp_state_machine); Group ("CONNECT_COMMAND", connect_command_state_machine); Group ("CONNECT_SA", connect_sa_state_machine); Group ("MAGIC", magic_state_machine); Group ("OLDSTYLE", oldstyle_state_machine); Group ("NEWSTYLE", newstyle_state_machine); State { default_state with name = "NEGOTIATING"; comment = "Connection is ready to negotiate an NBD option"; external_events = [ CmdIssue, "NEWSTYLE.START" ]; }; (* Implementation: generator/states.c *) State { default_state with name = "READY"; comment = "Connection is ready to process NBD commands"; external_events = [ CmdIssue, "ISSUE_COMMAND.START"; NotifyRead, "REPLY.START" ]; }; Group ("ISSUE_COMMAND", issue_command_state_machine); Group ("REPLY", reply_state_machine); (* Implementation: generator/states.c *) State { default_state with name = "DEAD"; comment = "Connection is in an unrecoverable error state, can only be closed"; }; (* Implementation: generator/states.c *) State { default_state with name = "CLOSED"; comment = "Connection is closed"; }; ] (* State machine implementing [nbd_aio_connect]. * Implementation: generator/states-connect.c *) and connect_state_machine = [ State { default_state with name = "START"; comment = "Initial call to connect(2) on the socket"; external_events = [ NotifyWrite, "CONNECTING" ]; }; State { default_state with name = "CONNECTING"; comment = "Connecting to the remote server"; external_events = [ NotifyWrite, "" ]; }; ] (* State machine implementing [nbd_aio_connect_tcp]. * Implementation: generator/states-connect.c *) and connect_tcp_state_machine = [ State { default_state with name = "START"; comment = "Connect to a remote TCP server"; external_events = []; }; State { default_state with name = "CONNECT"; comment = "Initial call to connect(2) on a TCP socket"; external_events = [ NotifyWrite, "CONNECTING" ]; }; State { default_state with name = "CONNECTING"; comment = "Connecting to the remote server over a TCP socket"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "NEXT_ADDRESS"; comment = "Connecting to the next address over a TCP socket"; external_events = []; }; ] (* State machine implementing [nbd_aio_connect_command]. * Implementation: generator/states-connect.c *) and connect_command_state_machine = [ State { default_state with name = "START"; comment = "Connect to a subprocess"; external_events = []; }; ] (* State machine implementing [nbd_aio_connect_systemd_socket_activation]. *) and connect_sa_state_machine = [ State { default_state with name = "START"; comment = "Connect to a subprocess with systemd socket activation"; external_events = []; }; ] (* Parse initial magic string from the server. * Implementation: generator/states-magic.c *) and magic_state_machine = [ State { default_state with name = "START"; comment = "Prepare to receive the magic identification from remote"; external_events = []; }; State { default_state with name = "RECV_MAGIC"; comment = "Receive initial magic identification from remote"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK_MAGIC"; comment = "Check magic and version sent by remote"; }; ] (* Oldstyle handshake. * Implementation: generator/states-oldstyle.c *) and oldstyle_state_machine = [ State { default_state with name = "START"; comment = "Prepare to receive remainder of oldstyle header"; external_events = []; }; State { default_state with name = "RECV_REMAINING"; comment = "Receive remainder of oldstyle header"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK"; comment = "Check oldstyle header"; external_events = []; }; ] (* Fixed newstyle handshake. * Implementation: generator/states-newstyle.c *) and newstyle_state_machine = [ State { default_state with name = "START"; comment = "Prepare to receive newstyle gflags from remote"; external_events = []; }; State { default_state with name = "RECV_GFLAGS"; comment = "Receive newstyle gflags from remote"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK_GFLAGS"; comment = "Check global flags sent by remote"; }; State { default_state with name = "SEND_CFLAGS"; comment = "Send newstyle client flags to remote"; external_events = [ NotifyWrite, "" ]; }; (* Options. These state groups are always entered unconditionally, * in this order. The START state in each group will check if the * state needs to run and skip to the next state in the list if not. * When opt_mode is set, control is returned to the user in state * NEGOTIATING after OPT_STRUCTURED_REPLY or any failed OPT_GO. *) Group ("OPT_STARTTLS", newstyle_opt_starttls_state_machine); Group ("OPT_EXTENDED_HEADERS", newstyle_opt_extended_headers_state_machine); Group ("OPT_STRUCTURED_REPLY", newstyle_opt_structured_reply_state_machine); Group ("OPT_META_CONTEXT", newstyle_opt_meta_context_state_machine); Group ("OPT_GO", newstyle_opt_go_state_machine); Group ("OPT_EXPORT_NAME", newstyle_opt_export_name_state_machine); (* Options that can be used during negotiation, when opt_mode is enabled. *) Group ("OPT_LIST", newstyle_opt_list_state_machine); (* When NBD_OPT_GO fails, or when opt_mode is enabled, option parsing * can be cleanly ended without moving through the %READY state. *) State { default_state with name = "PREPARE_OPT_ABORT"; comment = "Prepare to send NBD_OPT_ABORT"; external_events = []; }; State { default_state with name = "SEND_OPT_ABORT"; comment = "Send NBD_OPT_ABORT to end negotiation"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_OPTION_SHUTDOWN"; comment = "Sending write shutdown notification to the remote server"; external_events = [ NotifyWrite, "" ]; }; (* When option parsing has successfully finished negotiation * it will jump to this state for final steps before moving to * the %READY state. *) State { default_state with name = "FINISHED"; comment = "Finish off newstyle negotiation"; }; ] (* Fixed newstyle NBD_OPT_STARTTLS option. * Implementation: generator/states-newstyle-opt-starttls.c *) and newstyle_opt_starttls_state_machine = [ State { default_state with name = "START"; comment = "Try to send newstyle NBD_OPT_STARTTLS to upgrade to TLS"; external_events = []; }; State { default_state with name = "SEND"; comment = "Send newstyle NBD_OPT_STARTTLS to upgrade to TLS"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "RECV_REPLY"; comment = "Receive newstyle NBD_OPT_STARTTLS reply"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "RECV_REPLY_PAYLOAD"; comment = "Receive any newstyle NBD_OPT_STARTTLS reply payload"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK_REPLY"; comment = "Check newstyle NBD_OPT_STARTTLS reply"; external_events = []; }; State { default_state with name = "TLS_HANDSHAKE_READ"; comment = "TLS handshake (reading)"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "TLS_HANDSHAKE_WRITE"; comment = "TLS handshake (writing)"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "TLS_HANDSHAKE_DONE"; comment = "TLS handshake complete"; external_events = []; }; ] (* Fixed newstyle NBD_OPT_LIST option. * Implementation: generator/states-newstyle-opt-list.c *) and newstyle_opt_list_state_machine = [ State { default_state with name = "START"; comment = "Start listing exports if in list mode."; external_events = []; }; State { default_state with name = "SEND"; comment = "Send newstyle NBD_OPT_LIST to begin listing exports"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "RECV_REPLY"; comment = "Receive NBD_REP_SERVER reply"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "RECV_REPLY_PAYLOAD"; comment = "Receive NBD_REP_SERVER reply payload"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK_REPLY"; comment = "Check NBD_REP_SERVER reply"; external_events = []; }; ] (* Fixed newstyle NBD_OPT_EXTENDED_HEADERS option. * Implementation: generator/states-newstyle-opt-extended-headers.c *) and newstyle_opt_extended_headers_state_machine = [ State { default_state with name = "START"; comment = "Try to negotiate newstyle NBD_OPT_EXTENDED_HEADERS"; external_events = []; }; State { default_state with name = "SEND"; comment = "Send newstyle NBD_OPT_EXTENDED_HEADERS negotiation request"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "RECV_REPLY"; comment = "Receive newstyle NBD_OPT_EXTENDED_HEADERS option reply"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "RECV_REPLY_PAYLOAD"; comment = "Receive any newstyle NBD_OPT_EXTENDED_HEADERS reply payload"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK_REPLY"; comment = "Check newstyle NBD_OPT_EXTENDED_HEADERS option reply"; external_events = []; }; ] (* Fixed newstyle NBD_OPT_STRUCTURED_REPLY option. * Implementation: generator/states-newstyle-opt-structured-reply.c *) and newstyle_opt_structured_reply_state_machine = [ State { default_state with name = "START"; comment = "Try to negotiate newstyle NBD_OPT_STRUCTURED_REPLY"; external_events = []; }; State { default_state with name = "SEND"; comment = "Send newstyle NBD_OPT_STRUCTURED_REPLY negotiation request"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "RECV_REPLY"; comment = "Receive newstyle NBD_OPT_STRUCTURED_REPLY option reply"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "RECV_REPLY_PAYLOAD"; comment = "Receive any newstyle NBD_OPT_STRUCTURED_REPLY reply payload"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK_REPLY"; comment = "Check newstyle NBD_OPT_STRUCTURED_REPLY option reply"; external_events = []; }; ] (* Fixed newstyle NBD_OPT_SET/LIST_META_CONTEXT option. * Implementation: generator/states-newstyle-opt-meta-context.c *) and newstyle_opt_meta_context_state_machine = [ State { default_state with name = "START"; comment = "Try to negotiate newstyle NBD_OPT_SET_META_CONTEXT"; external_events = []; }; State { default_state with name = "SEND"; comment = "Send newstyle NBD_OPT_SET_META_CONTEXT"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_EXPORTNAMELEN"; comment = "Send newstyle NBD_OPT_SET_META_CONTEXT export name length"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_EXPORTNAME"; comment = "Send newstyle NBD_OPT_SET_META_CONTEXT export name"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_NRQUERIES"; comment = "Send newstyle NBD_OPT_SET_META_CONTEXT number of queries"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "PREPARE_NEXT_QUERY"; comment = "Prepare to send newstyle NBD_OPT_SET_META_CONTEXT query"; external_events = []; }; State { default_state with name = "SEND_QUERYLEN"; comment = "Send newstyle NBD_OPT_SET_META_CONTEXT query length"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_QUERY"; comment = "Send newstyle NBD_OPT_SET_META_CONTEXT query"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "PREPARE_FOR_REPLY"; comment = "Prepare to receive newstyle NBD_OPT_SET_META_CONTEXT option reply"; external_events = []; }; State { default_state with name = "RECV_REPLY"; comment = "Receive newstyle NBD_OPT_SET_META_CONTEXT option reply"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "RECV_REPLY_PAYLOAD"; comment = "Receive newstyle NBD_OPT_SET_META_CONTEXT option reply payload"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK_REPLY"; comment = "Check newstyle NBD_OPT_SET_META_CONTEXT option reply"; external_events = []; }; ] (* Fixed newstyle NBD_OPT_GO option. * Implementation: generator/states-newstyle-opt-go.c *) and newstyle_opt_go_state_machine = [ State { default_state with name = "START"; comment = "Try to send newstyle NBD_OPT_GO to end handshake"; external_events = []; }; State { default_state with name = "SEND"; comment = "Send newstyle NBD_OPT_GO to end handshake"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_EXPORTNAMELEN"; comment = "Send newstyle NBD_OPT_GO export name length"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_EXPORT"; comment = "Send newstyle NBD_OPT_GO export name"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_NRINFOS"; comment = "Send newstyle NBD_OPT_GO number of infos"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_INFO"; comment = "Send newstyle NBD_OPT_GO request for NBD_INFO_BLOCK_SIZE"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "RECV_REPLY"; comment = "Receive newstyle NBD_OPT_GO reply"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "RECV_REPLY_PAYLOAD"; comment = "Receive newstyle NBD_OPT_GO reply payload"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK_REPLY"; comment = "Check newstyle NBD_OPT_GO reply"; external_events = []; }; ] (* Newstyle NBD_OPT_EXPORT_NAME option. * Implementation: generator/states-newstyle-opt-export-name.c *) and newstyle_opt_export_name_state_machine = [ State { default_state with name = "START"; comment = "Try to send newstyle NBD_OPT_EXPORT_NAME to end handshake"; external_events = []; }; State { default_state with name = "SEND"; comment = "Send newstyle NBD_OPT_EXPORT_NAME to end handshake"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "SEND_EXPORT"; comment = "Send newstyle NBD_OPT_EXPORT_NAME export name"; external_events = [ NotifyWrite, "" ]; }; State { default_state with name = "RECV_REPLY"; comment = "Receive newstyle NBD_OPT_EXPORT_NAME reply"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "CHECK_REPLY"; comment = "Check newstyle NBD_OPT_EXPORT_NAME reply"; external_events = []; }; ] (* Sending a command to the server. * Implementation: generator/states-issue-command.c *) and issue_command_state_machine = [ State { default_state with name = "START"; comment = "Begin issuing a command to the remote server"; external_events = []; }; State { default_state with name = "SEND_REQUEST"; comment = "Sending a request to the remote server"; external_events = [ NotifyWrite, ""; NotifyRead, "PAUSE_SEND_REQUEST" ]; }; State { default_state with name = "PAUSE_SEND_REQUEST"; comment = "Interrupt send request to receive an earlier command's reply"; external_events = []; }; State { default_state with name = "PREPARE_WRITE_PAYLOAD"; comment = "Prepare the write payload to send to the remote server"; external_events = []; }; State { default_state with name = "SEND_WRITE_PAYLOAD"; comment = "Sending the write payload to the remote server"; external_events = [ NotifyWrite, ""; NotifyRead, "PAUSE_WRITE_PAYLOAD" ]; }; State { default_state with name = "PAUSE_WRITE_PAYLOAD"; comment = "Interrupt write payload to receive an earlier command's reply"; external_events = []; }; State { default_state with name = "SEND_WRITE_SHUTDOWN"; comment = "Sending write shutdown notification to the remote server"; external_events = [ NotifyWrite, ""; NotifyRead, "PAUSE_WRITE_SHUTDOWN" ]; }; State { default_state with name = "PAUSE_WRITE_SHUTDOWN"; comment = "Interrupt write shutdown to receive an earlier command's reply"; external_events = []; }; State { default_state with name = "FINISH"; comment = "Finish issuing a command"; external_events = []; }; ] (* Receiving a reply from the server. * Implementation: generator/states-reply.c *) and reply_state_machine = [ State { default_state with name = "START"; comment = "Prepare to receive a reply from the remote server"; external_events = [ NotifyRead, "" ]; }; State { default_state with name = "RECV_REPLY"; comment = "Receive a reply from the remote server"; external_events = []; }; State { default_state with name = "CHECK_REPLY_MAGIC"; comment = "Check if the reply has expected magic"; external_events = []; }; State { default_state with name = "RECV_STRUCTURED_REMAINING"; comment = "Receiving the remaining part of a structured reply header"; external_events = []; }; Group ("SIMPLE_REPLY", simple_reply_state_machine); Group ("CHUNK_REPLY", chunk_reply_state_machine); State { default_state with name = "FINISH_COMMAND"; comment = "Finish receiving a command"; external_events = []; }; ] (* Receiving a simple reply from the server. * Implementation: generator/states-reply-simple.c *) and simple_reply_state_machine = [ State { default_state with name = "START"; comment = "Parse a simple reply from the server"; external_events = []; }; State { default_state with name = "RECV_READ_PAYLOAD"; comment = "Receiving the read payload for a simple reply"; external_events = []; }; ] (* Receiving a structured reply payload from the server. * Implementation: generator/states-reply-chunk.c *) and chunk_reply_state_machine = [ State { default_state with name = "START"; comment = "Start parsing a chunk reply payload from the server"; external_events = []; }; State { default_state with name = "RECV_ERROR"; comment = "Receive a chunk reply error header"; external_events = [] }; State { default_state with name = "RECV_ERROR_MESSAGE"; comment = "Receive a chunk reply error message"; external_events = []; }; State { default_state with name = "RECV_ERROR_TAIL"; comment = "Receive a chunk reply error tail"; external_events = []; }; State { default_state with name = "RECV_OFFSET_DATA"; comment = "Receive a chunk reply offset-data header"; external_events = []; }; State { default_state with name = "RECV_OFFSET_DATA_DATA"; comment = "Receive a chunk reply offset-data block of data"; external_events = []; }; State { default_state with name = "RECV_OFFSET_HOLE"; comment = "Receive a chunk reply offset-hole header"; external_events = []; }; State { default_state with name = "RECV_BS_HEADER"; comment = "Receive header of a chunk reply block-status payload"; external_events = []; }; State { default_state with name = "RECV_BS_ENTRIES"; comment = "Receive entries array of chunk reply block-status payload"; external_events = []; }; State { default_state with name = "RESYNC"; comment = "Ignore payload of an unexpected chunk reply"; external_events = []; }; State { default_state with name = "FINISH"; comment = "Finish receiving a chunk reply"; external_events = []; }; ] libnbd-1.20.3/generator/API.mli0000644000175000017500000002065714527200744011631 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: the API * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) type call = { args : arg list; (** parameters (except handle) *) optargs : optarg list; (** optional parameters (not optional in C) *) ret : ret; (** return value *) shortdesc : string; (** short description *) longdesc : string; (** long description *) example : string option; (** path to example code (under top_srcdir) *) see_also : link list; (** "SEE ALSO" section in man page *) (** List of permitted states for making this call. [[]] = Any state. *) permitted_states : permitted_state list; (** Most functions must take a lock. The only known exceptions are: - functions which return a constant (eg. [nbd_supports_uri]) - functions which {b only} read from the atomic [get_public_state] and do nothing else with the handle. *) is_locked : bool; (** Most functions can call set_error. For functions which are {b guaranteed} never to do that we can save a bit of time by setting this to false. *) may_set_error : bool; (** There are two types of asynchronous functions, those with a completion callback and those which change state when completed. This field tells if the function is asynchronous and in that case how one can check if it has completed. *) async_kind : async_kind option; (** A flag telling if the call may do something with the file descriptor. Some bindings needs exclusive access to the file descriptor and can not allow the user to call [aio_notify_read] or [aio_notify_write], neither directly nor indirectly from another call. So all calls that might trigger any of these functions to be called, including all synchronous commands like [pread] or [connect], should set this to [true]. *) modifies_fd : bool; (** The first stable version that the symbol appeared in, for example (1, 2) if the symbol was added in development cycle 1.1.x and thus the first stable version was 1.2. This is filled in by the generator, add new calls to the first_version table instead. *) mutable first_version : int * int; } and arg = | Bool of string (** bool *) | BytesIn of string * string (** byte array + size passed in to the function *) | BytesOut of string * string(** byte array + size specified by caller, written by the function *) | BytesPersistIn of string * string (** same as above, but buffer persists *) | BytesPersistOut of string * string | Closure of closure (** function pointer + void *opaque *) | Enum of string * enum (** enum/union type, int in C *) | Extent64 of string (** extent descriptor, with 63-bit size and 64-bit flags; struct nbd_extent in C, tuple or pair in other languages *) | Fd of string (** file descriptor *) | Flags of string * flags (** flags, uint32_t in C *) | Int of string (** small int *) | Int64 of string (** 64 bit signed int *) | Path of string (** filename or path *) | SizeT of string (** like size_t, for counting array elements *) | SockAddrAndLen of string * string (** struct sockaddr * + socklen_t *) | String of string (** string, cannot be NULL *) | StringList of string (** argv-style NULL-terminated array of strings *) | UInt of string (** small unsigned int *) | UInt32 of string (** 32 bit unsigned int *) | UInt64 of string (** 64 bit unsigned int *) | UIntPtr of string (** uintptr_t in C, same as UInt in non-C *) and optarg = | OClosure of closure (** optional closure *) | OFlags of string * flags * string list option (** optional flags, uint32_t in C, and valid subset *) and ret = | RBool (** return a boolean, or error *) | RStaticString (** return a static string (must be located in .text section), NULL for error *) | RErr (** return 0 = ok, -1 = error *) | RFd (** return a file descriptor, or error *) | RInt (** return a small int, -1 = error *) | RInt64 (** 64 bit int, -1 = error *) | RCookie (** 64 bit command cookie (>= 1), -1 = error *) | RSizeT (** return a count like ssize_t, -1 = error *) | RString (** return a newly allocated string, caller frees, NULL for error *) | RUInt (** return a bitmask, no error possible *) | RUIntPtr (** uintptr_t in C, same as RUInt in non-C *) | RUInt64 (** 64 bit int, no error possible *) | REnum of enum (** return an enum, no error possible *) | RFlags of flags (** return bitmask of flags, no error possible *) and closure = { cbname : string; (** name of callback function *) cbargs : cbarg list; (** all closures return int for now *) } and cbarg = | CBArrayAndLen of arg * string (** array + number of entries *) | CBBytesIn of string * string (** like BytesIn *) | CBInt of string (** like Int *) | CBInt64 of string (** like Int64 *) | CBMutable of arg (** mutable argument, eg. int* *) | CBString of string (** like String *) | CBUInt of string (** like UInt *) | CBUInt64 of string (** like UInt64 *) and enum = { enum_prefix : string; (** prefix of each enum variant *) enums : (string * int) list (** enum names and their values in C *) } and flags = { flag_prefix : string; (** prefix of each flag name *) guard : string option; (** additional gating for checking valid flags *) flags : (string * int) list; (** flag names and their values in C *) _unused : unit (** silence warning 23 when using 'defaults with' *) } and permitted_state = | Created (** can be called in the START state *) | Connecting (** can be called when connecting/handshaking *) | Negotiating (** can be called when handshaking in opt_mode *) | Connected (** when connected and READY or processing, but not including CLOSED or DEAD *) | Closed | Dead (** can be called when the handle is CLOSED or DEAD *) and async_kind = (** The asynchronous call has a completion callback. *) | WithCompletionCallback (** The asynchronous call is completed when the given handle call returns the given boolean value. Might for instance be ("aio_is_connected", false). *) | ChangesState of string * bool and link = | Link of string (** link to L *) | SectionLink of string (** link to L *) | MainPageLink (** link to L *) | ExternalLink of string * int (** link to L *) | URLLink of string (** link to L *) val handle_calls : (string * call) list (** List of API calls. The string is the name of the call. *) val first_version : (string * (int * int)) list (** The first stable version that the symbol appeared in, for example (1, 2) if the symbol was added in development cycle 1.1.x and thus the first stable version was 1.2. *) val all_closures : closure list val all_enums : enum list val all_flags : flags list val all_permitted_states : permitted_state list val constants : (string * int) list val metadata_namespaces : (string * (string * (string * int) list) list) list val extract_links : string -> link list (** Extract links from POD text. *) val pod_of_link : link -> string val verify_link : link -> unit val sort_uniq_links : link list -> link list libnbd-1.20.3/generator/API.ml0000644000175000017500000054314314675532361011467 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: the API * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Printf open Utils type call = { args : arg list; optargs : optarg list; ret : ret; shortdesc : string; longdesc : string; example : string option; see_also : link list; permitted_states : permitted_state list; is_locked : bool; may_set_error : bool; async_kind : async_kind option; modifies_fd: bool; mutable first_version : int * int; } and arg = | Bool of string | BytesIn of string * string | BytesOut of string * string | BytesPersistIn of string * string | BytesPersistOut of string * string | Closure of closure | Enum of string * enum | Extent64 of string | Fd of string | Flags of string * flags | Int of string | Int64 of string | Path of string | SizeT of string | SockAddrAndLen of string * string | String of string | StringList of string | UInt of string | UInt32 of string | UInt64 of string | UIntPtr of string and optarg = | OClosure of closure | OFlags of string * flags * string list option and ret = | RBool | RStaticString | RErr | RFd | RInt | RInt64 | RCookie | RSizeT | RString | RUInt | RUIntPtr | RUInt64 | REnum of enum | RFlags of flags and closure = { cbname : string; cbargs : cbarg list; } and cbarg = | CBArrayAndLen of arg * string | CBBytesIn of string * string | CBInt of string | CBInt64 of string | CBMutable of arg | CBString of string | CBUInt of string | CBUInt64 of string and enum = { enum_prefix : string; enums : (string * int) list } and flags = { flag_prefix : string; guard : string option; flags : (string * int) list; _unused : unit } and permitted_state = | Created | Connecting | Negotiating | Connected | Closed | Dead and async_kind = | WithCompletionCallback | ChangesState of string * bool and link = | Link of string | SectionLink of string | MainPageLink | ExternalLink of string * int | URLLink of string let blocking_connect_call_description = "\n This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but L can be used for manual control over option negotiation performed before transmission phase." let async_connect_call_description = "\n You can check if the connection attempt is still underway by calling L. If L is enabled, the connection is ready for manual option negotiation once L returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once L returns true." let strict_call_description = "\n By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast." let non_blocking_test_call_description = "\n This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake." let all_permitted_states = [ Created; Connecting; Negotiating; Connected; Closed; Dead ] (* Closures. *) let chunk_closure = { cbname = "chunk"; cbargs = [ CBBytesIn ("subbuf", "count"); CBUInt64 "offset"; CBUInt "status"; CBMutable (Int "error") ] } let completion_closure = { cbname = "completion"; cbargs = [ CBMutable (Int "error") ] } let debug_closure = { cbname = "debug"; cbargs = [ CBString "context"; CBString "msg" ] } let extent_closure = { cbname = "extent"; cbargs = [ CBString "metacontext"; CBUInt64 "offset"; CBArrayAndLen (UInt32 "entries", "nr_entries"); CBMutable (Int "error") ] } let extent64_closure = { cbname = "extent64"; cbargs = [ CBString "metacontext"; CBUInt64 "offset"; CBArrayAndLen (Extent64 "entries", "nr_entries"); CBMutable (Int "error") ] } let list_closure = { cbname = "list"; cbargs = [ CBString "name"; CBString "description" ] } let context_closure = { cbname = "context"; cbargs = [ CBString "name" ] } let all_closures = [ chunk_closure; completion_closure; debug_closure; extent_closure; extent64_closure; list_closure; context_closure ] (* Enums. *) let tls_enum = { enum_prefix = "TLS"; enums = [ "DISABLE", 0; "ALLOW", 1; "REQUIRE", 2; ] } let block_size_enum = { enum_prefix = "SIZE"; enums = [ "MINIMUM", 0; "PREFERRED", 1; "MAXIMUM", 2; "PAYLOAD", 3; ] } let all_enums = [ tls_enum; block_size_enum ] (* Flags. See also Constants below. *) let default_flags = { flag_prefix = ""; guard = None; flags = []; _unused = () } let cmd_flags = { default_flags with flag_prefix = "CMD_FLAG"; guard = Some "((h->strict & LIBNBD_STRICT_FLAGS) || flags > UINT16_MAX)"; flags = [ "FUA", 1 lsl 0; "NO_HOLE", 1 lsl 1; "DF", 1 lsl 2; "REQ_ONE", 1 lsl 3; "FAST_ZERO", 1 lsl 4; "PAYLOAD_LEN", 1 lsl 5; ] } let handshake_flags = { default_flags with flag_prefix = "HANDSHAKE_FLAG"; flags = [ "FIXED_NEWSTYLE", 1 lsl 0; "NO_ZEROES", 1 lsl 1; ] } let strict_flags = { default_flags with flag_prefix = "STRICT"; flags = [ "COMMANDS", 1 lsl 0; "FLAGS", 1 lsl 1; "BOUNDS", 1 lsl 2; "ZERO_SIZE", 1 lsl 3; "ALIGN", 1 lsl 4; "PAYLOAD", 1 lsl 5; "AUTO_FLAG", 1 lsl 6; ] } let allow_transport_flags = { default_flags with flag_prefix = "ALLOW_TRANSPORT"; flags = [ "TCP", 1 lsl 0; "UNIX", 1 lsl 1; "VSOCK", 1 lsl 2; ] } let shutdown_flags = { default_flags with flag_prefix = "SHUTDOWN"; flags = [ "ABANDON_PENDING", 1 lsl 16; ] } let all_flags = [ cmd_flags; handshake_flags; strict_flags; allow_transport_flags; shutdown_flags ] let default_call = { args = []; optargs = []; ret = RErr; shortdesc = ""; longdesc = ""; example = None; see_also = []; permitted_states = []; is_locked = true; may_set_error = true; async_kind = None; modifies_fd = false; first_version = (0, 0) } (* Calls. * * The first parameter [struct nbd_handle *nbd] is implicit. *) let handle_calls = [ "set_debug", { default_call with args = [ Bool "debug" ]; ret = RErr; shortdesc = "set or clear the debug flag"; longdesc = "\ Set or clear the debug flag. When debugging is enabled, debugging messages from the library are printed to stderr, unless a debugging callback has been defined too (see L) in which case they are sent to that function. This flag defaults to false on newly created handles, except if C is set in the environment in which case it defaults to true."; see_also = [Link "set_handle_name"; Link "set_debug_callback"]; }; "get_debug", { default_call with args = []; ret = RBool; may_set_error = false; shortdesc = "return the state of the debug flag"; longdesc = "\ Return the state of the debug flag on this handle."; see_also = [Link "set_debug"]; }; "set_debug_callback", { default_call with args = [ Closure debug_closure ]; ret = RErr; shortdesc = "set the debug callback"; longdesc = "\ Set the debug callback. This function is called when the library emits debug messages, when debugging is enabled on a handle. The callback parameters are C passed to this function, the name of the libnbd function emitting the debug message (C), and the message itself (C). If no debug callback is set on a handle then messages are printed on C. The callback should not call C APIs on the same handle since it can be called while holding the handle lock and will cause a deadlock."; }; "clear_debug_callback", { default_call with args = []; ret = RErr; shortdesc = "clear the debug callback"; longdesc = "\ Remove the debug callback if one was previously associated with the handle (with L). If no callback was associated this does nothing."; }; "stats_bytes_sent", { default_call with args = []; ret = RUInt64; may_set_error = false; shortdesc = "statistics of bytes sent over connection so far"; longdesc = "\ Return the number of bytes that the client has sent to the server. This tracks the plaintext bytes utilized by the NBD protocol; it may differ from the number of bytes actually sent over the connection, particularly when TLS is in use."; see_also = [Link "stats_chunks_sent"; Link "stats_bytes_received"; Link "stats_chunks_received"]; }; "stats_chunks_sent", { default_call with args = []; ret = RUInt64; may_set_error = false; shortdesc = "statistics of chunks sent over connection so far"; longdesc = "\ Return the number of chunks that the client has sent to the server, where a chunk is a group of bytes delineated by a magic number that cannot be further subdivided without breaking the protocol. This number does not necessarily relate to the number of API calls made, nor to the number of TCP packets sent over the connection."; see_also = [Link "stats_bytes_sent"; Link "stats_bytes_received"; Link "stats_chunks_received"; Link "set_strict_mode"]; }; "stats_bytes_received", { default_call with args = []; ret = RUInt64; may_set_error = false; shortdesc = "statistics of bytes received over connection so far"; longdesc = "\ Return the number of bytes that the client has received from the server. This tracks the plaintext bytes utilized by the NBD protocol; it may differ from the number of bytes actually received over the connection, particularly when TLS is in use."; see_also = [Link "stats_chunks_received"; Link "stats_bytes_sent"; Link "stats_chunks_sent"]; }; "stats_chunks_received", { default_call with args = []; ret = RUInt64; may_set_error = false; shortdesc = "statistics of chunks received over connection so far"; longdesc = "\ Return the number of chunks that the client has received from the server, where a chunk is a group of bytes delineated by a magic number that cannot be further subdivided without breaking the protocol. This number does not necessarily relate to the number of API calls made, nor to the number of TCP packets received over the connection."; see_also = [Link "stats_bytes_received"; Link "stats_bytes_sent"; Link "stats_chunks_sent"; Link "get_structured_replies_negotiated"]; }; "set_handle_name", { default_call with args = [ String "handle_name" ]; ret = RErr; shortdesc = "set the handle name"; longdesc = "\ Handles have a name which is unique within the current process. The handle name is used in debug output. Handle names are normally generated automatically and have the form C<\"nbd1\">, C<\"nbd2\">, etc., but you can optionally use this call to give the handles a name which is meaningful for your application to make debugging output easier to understand."; see_also = [Link "get_handle_name"]; }; "get_handle_name", { default_call with args = []; ret = RString; shortdesc = "get the handle name"; longdesc = "\ Get the name of the handle. If it was previously set by calling L then this returns the name that was set. Otherwise it will return a generic name like C<\"nbd1\">, C<\"nbd2\">, etc."; see_also = [Link "set_handle_name"]; }; "set_private_data", { default_call with args = [ UIntPtr "private_data" ]; ret = RUIntPtr; is_locked = false; may_set_error = false; shortdesc = "set the per-handle private data"; longdesc = "\ Handles contain a private data field for applications to use for any purpose. When calling libnbd from C, the type of this field is C so it can be used to store an unsigned integer or a pointer. In non-C bindings it can be used to store an unsigned integer. This function sets the value of this field and returns the old value (or 0 if it was not previously set)."; see_also = [Link "get_private_data"]; }; "get_private_data", { default_call with args = []; ret = RUIntPtr; is_locked = false; may_set_error = false; shortdesc = "get the per-handle private data"; longdesc = "\ Return the value of the private data field set previously by a call to L (or 0 if it was not previously set)."; see_also = [Link "set_private_data"]; }; "set_export_name", { default_call with args = [ String "export_name" ]; ret = RErr; permitted_states = [ Created; Negotiating ]; shortdesc = "set the export name"; longdesc = "\ For servers which require an export name or can serve different content on different exports, set the C to connect to. The default is the empty string C<\"\">. This is only relevant when connecting to servers using the newstyle protocol as the oldstyle protocol did not support export names. The NBD protocol limits export names to 4096 bytes, but servers may not support the full length. The encoding of export names is always UTF-8. When option mode is not in use, the export name must be set before beginning a connection. However, when L has enabled option mode, it is possible to change the export name prior to L. In particular, the use of L during negotiation can be used to determine a name the server is likely to accept, and L can be used to learn details about an export before connecting. This call may be skipped if using L to connect to a URI that includes an export name."; see_also = [Link "get_export_name"; Link "connect_uri"; Link "set_opt_mode"; Link "opt_go"; Link "opt_list"; Link "opt_info"]; }; "get_export_name", { default_call with args = []; ret = RString; shortdesc = "get the export name"; longdesc = "\ Get the export name associated with the handle. This is the name that libnbd requests; see L for determining if the server has a different canonical name for the given export (most common when requesting the default export name of an empty string C<\"\">)"; see_also = [Link "set_export_name"; Link "connect_uri"; Link "get_canonical_export_name"]; }; "set_request_block_size", { default_call with args = [Bool "request"]; ret = RErr; permitted_states = [ Created; Negotiating ]; shortdesc = "control whether NBD_OPT_GO requests block size"; longdesc = "\ By default, when connecting to an export, libnbd requests that the server report any block size restrictions. The NBD protocol states that a server may supply block sizes regardless of whether the client requests them, and libnbd will report those block sizes (see L); conversely, if a client does not request block sizes, the server may reject the connection instead of dealing with a client sending unaligned requests. This function makes it possible to test server behavior by emulating older clients. Note that even when block size is requested, the server is not obligated to provide any. Furthermore, if block sizes are provided (whether or not the client requested them), libnbd enforces alignment to those sizes unless L is used to bypass client-side safety checks."; see_also = [Link "get_request_block_size"; Link "set_full_info"; Link "get_block_size"; Link "set_strict_mode"]; }; "get_request_block_size", { default_call with args = []; ret = RBool; permitted_states = []; shortdesc = "see if NBD_OPT_GO requests block size"; longdesc = "\ Return the state of the block size request flag on this handle."; see_also = [Link "set_request_block_size"]; }; "set_full_info", { default_call with args = [Bool "request"]; ret = RErr; permitted_states = [ Created; Negotiating ]; shortdesc = "control whether NBD_OPT_GO requests extra details"; longdesc = "\ By default, when connecting to an export, libnbd only requests the details it needs to service data operations. The NBD protocol says that a server can supply optional information, such as a canonical name of the export (see L) or a description of the export (see L), but that a hint from the client makes it more likely for this extra information to be provided. This function controls whether libnbd will provide that hint. Note that even when full info is requested, the server is not obligated to reply with all information that libnbd requested. Similarly, libnbd will ignore any optional server information that libnbd has not yet been taught to recognize. Furthermore, the hint to request block sizes is independently controlled via L."; see_also = [Link "get_full_info"; Link "get_canonical_export_name"; Link "get_export_description"; Link "set_request_block_size"]; }; "get_full_info", { default_call with args = []; ret = RBool; permitted_states = []; shortdesc = "see if NBD_OPT_GO requests extra details"; longdesc = "\ Return the state of the full info request flag on this handle."; see_also = [Link "set_full_info"]; }; "get_canonical_export_name", { default_call with args = []; ret = RString; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "return the canonical export name, if the server has one"; longdesc = "\ The NBD protocol permits a server to report an optional canonical export name, which may differ from the client's request (as set by L or L). This function accesses any name returned by the server; it may be the same as the client request, but is more likely to differ when the client requested a connection to the default export name (an empty string C<\"\">). Some servers are unlikely to report a canonical name unless the client specifically hinted about wanting it, via L."; example = Some "examples/server-flags.c"; see_also = [Link "set_full_info"; Link "get_export_name"; Link "opt_info"]; }; "get_export_description", { default_call with args = []; ret = RString; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "return the export description, if the server has one"; longdesc = "\ The NBD protocol permits a server to report an optional export description. This function reports any description returned by the server. Some servers are unlikely to report a description unless the client specifically hinted about wanting it, via L. For L, a description is set with I<-D>."; example = Some "examples/server-flags.c"; see_also = [Link "set_full_info"; Link "opt_info"]; }; "set_tls", { default_call with args = [Enum ("tls", tls_enum)]; ret = RErr; permitted_states = [ Created ]; shortdesc = "enable or require TLS (authentication and encryption)"; longdesc = "\ Enable or require TLS (authenticated and encrypted connections) to the NBD server. The possible settings are: =over 4 =item C Disable TLS. (The default setting, unless using L with a URI that requires TLS). This setting is also necessary if you use L and want to interact in plaintext with a server that implements the NBD protocol's C mode, prior to enabling TLS with L. Most NBD servers with TLS support prefer the NBD protocol's C mode, so this sort of manual interaction tends to be useful mainly during integration testing. =item C Enable TLS if possible. This option is insecure (or best effort) in that in some cases it will fall back to an unencrypted and/or unauthenticated connection if TLS could not be established. Use C below if the connection must be encrypted. Some servers will drop the connection if TLS fails so fallback may not be possible. =item C Require an encrypted and authenticated TLS connection. Always fail to connect if the connection is not encrypted and authenticated. =back As well as calling this you may also need to supply the path to the certificates directory (L), the username (L) and/or the Pre-Shared Keys (PSK) file (L). For now, when using L, any URI query parameters related to TLS are not handled automatically. Setting the level higher than zero will fail if libnbd was not compiled against gnutls; you can test whether this is the case with L."; example = Some "examples/encryption.c"; see_also = [SectionLink "ENCRYPTION AND AUTHENTICATION"; Link "get_tls"; Link "get_tls_negotiated"; Link "opt_starttls"]; }; "get_tls", { default_call with args = []; ret = REnum tls_enum; may_set_error = false; shortdesc = "get the TLS request setting"; longdesc = "\ Get the TLS request setting. B If you want to find out if TLS was actually negotiated on a particular connection use L instead."; see_also = [Link "set_tls"; Link "get_tls_negotiated"]; }; "get_tls_negotiated", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "find out if TLS was negotiated on a connection"; longdesc = "\ After connecting you may call this to find out if the connection is using TLS. This is normally useful only if you set the TLS request mode to C (see L), because in this mode we try to use TLS but fall back to unencrypted if it was not available. This function will tell you if TLS was negotiated or not. In C mode (the most secure) the connection would have failed if TLS could not be negotiated. With C mode, TLS is not tried automatically; but if the NBD server uses the less-common C mode, this function reports whether a manual L enabled TLS or if the connection is still plaintext."; see_also = [Link "set_tls"; Link "get_tls"; Link "opt_starttls"]; }; "set_tls_certificates", { default_call with args = [Path "dir"]; ret = RErr; permitted_states = [ Created ]; shortdesc = "set the path to the TLS certificates directory"; longdesc = "\ Set the path to the TLS certificates directory. If not set and TLS is used then a compiled in default is used. For root this is C. For non-root this is C<$HOME/.pki/libnbd> and C<$HOME/.config/pki/libnbd>. If none of these directories can be found then the system trusted CAs are used. This function may be called regardless of whether TLS is supported, but will have no effect unless L is also used to request or require TLS."; see_also = [Link "set_tls"]; }; (* Can't implement this because we need a way to return string that can be NULL. "get_tls_certificates", { default_call with args = []; ret = RString; shortdesc = "get the current TLS certificates directory"; longdesc = "\ Get the current TLS directory."; see_also = [Link "set_tls_certificates"]; }; *) "set_tls_verify_peer", { default_call with args = [Bool "verify"]; ret = RErr; permitted_states = [ Created ]; shortdesc = "set whether we verify the identity of the server"; longdesc = "\ Set this flag to control whether libnbd will verify the identity of the server from the server's certificate and the certificate authority. This defaults to true when connecting to TCP servers using TLS certificate authentication, and false otherwise. This function may be called regardless of whether TLS is supported, but will have no effect unless L is also used to request or require TLS."; see_also = [Link "set_tls"; Link "get_tls_verify_peer"]; }; "get_tls_verify_peer", { default_call with args = []; ret = RBool; may_set_error = false; shortdesc = "get whether we verify the identity of the server"; longdesc = "\ Get the verify peer flag."; see_also = [Link "set_tls_verify_peer"]; }; "set_tls_username", { default_call with args = [String "username"]; ret = RErr; permitted_states = [ Created ]; shortdesc = "set the TLS username"; longdesc = "\ Set the TLS client username. This is used if authenticating with PSK over TLS is enabled. If not set then the local username is used. This function may be called regardless of whether TLS is supported, but will have no effect unless L is also used to request or require TLS."; example = Some "examples/encryption.c"; see_also = [Link "get_tls_username"; Link "set_tls"]; }; "get_tls_username", { default_call with args = []; ret = RString; shortdesc = "get the current TLS username"; longdesc = "\ Get the current TLS username."; see_also = [Link "set_tls_username"]; }; "set_tls_psk_file", { default_call with args = [Path "filename"]; ret = RErr; permitted_states = [ Created ]; shortdesc = "set the TLS Pre-Shared Keys (PSK) filename"; longdesc = "\ Set the TLS Pre-Shared Keys (PSK) filename. This is used if trying to authenticate to the server using with a pre-shared key. There is no default so if this is not set then PSK authentication cannot be used to connect to the server. This function may be called regardless of whether TLS is supported, but will have no effect unless L is also used to request or require TLS."; example = Some "examples/encryption.c"; see_also = [Link "set_tls"]; }; (* Can't implement this because we need a way to return string that can be NULL. "get_tls_psk_file", { default_call with args = []; ret = RString; shortdesc = "get the current TLS PSK filename"; longdesc = "\ Get the current TLS PSK filename."; see_also = [Link "set_tls_psk_file"]; }; *) "set_request_extended_headers", { default_call with args = [Bool "request"]; ret = RErr; permitted_states = [ Created ]; shortdesc = "control use of extended headers"; longdesc = "\ By default, libnbd tries to negotiate extended headers with the server, as this protocol extension permits the use of 64-bit zero, trim, and block status actions. However, for integration testing, it can be useful to clear this flag rather than find a way to alter the server to fail the negotiation request. For backwards compatibility, the setting of this knob is ignored if L is also set to false, since the use of extended headers implies structured replies."; see_also = [Link "get_request_extended_headers"; Link "opt_extended_headers"; Link "set_handshake_flags"; Link "set_strict_mode"; Link "get_extended_headers_negotiated"; Link "zero"; Link "trim"; Link "cache"; Link "block_status_64"; Link "set_request_structured_replies"]; }; "get_request_extended_headers", { default_call with args = []; ret = RBool; may_set_error = false; shortdesc = "see if extended headers are attempted"; longdesc = "\ Return the state of the request extended headers flag on this handle. B If you want to find out if extended headers were actually negotiated on a particular connection use L instead."; see_also = [Link "set_request_extended_headers"; Link "get_extended_headers_negotiated"; Link "get_request_extended_headers"]; }; "get_extended_headers_negotiated", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "see if extended headers are in use"; longdesc = "\ After connecting you may call this to find out if the connection is using extended headers. Note that this setting is sticky; this can return true even after a second L returns false because the server detected a duplicate request. When extended headers are not in use, commands are limited to a 32-bit length, even when the libnbd API uses a 64-bit parameter to express the length. But even when extended headers are supported, the server may enforce other limits, visible through L. Note that when extended headers are negotiated, you should prefer the use of L instead of L if any of the meta contexts you requested via L might return 64-bit status values; however, all of the well-known meta contexts covered by current C constants only return 32-bit status."; see_also = [Link "set_request_extended_headers"; Link "get_request_extended_headers"; Link "zero"; Link "trim"; Link "cache"; Link "block_status_64"; Link "get_block_size"; Link "get_protocol"; Link "get_structured_replies_negotiated"]; }; "set_request_structured_replies", { default_call with args = [Bool "request"]; ret = RErr; permitted_states = [ Created ]; shortdesc = "control use of structured replies"; longdesc = "\ By default, libnbd tries to negotiate structured replies with the server, as this protocol extension must be in use before L or L can return true. However, for integration testing, it can be useful to clear this flag rather than find a way to alter the server to fail the negotiation request. It is also useful to set this to false prior to using L if it is desired to control when to send L during negotiation. Note that setting this knob to false also disables any automatic request for extended headers."; see_also = [Link "get_request_structured_replies"; Link "set_handshake_flags"; Link "set_strict_mode"; Link "opt_structured_reply"; Link "get_structured_replies_negotiated"; Link "can_meta_context"; Link "can_df"; Link "set_request_extended_headers"]; }; "get_request_structured_replies", { default_call with args = []; ret = RBool; may_set_error = false; shortdesc = "see if structured replies are attempted"; longdesc = "\ Return the state of the request structured replies flag on this handle. B If you want to find out if structured replies were actually negotiated on a particular connection use L instead."; see_also = [Link "set_request_structured_replies"; Link "get_structured_replies_negotiated"; Link "get_request_extended_headers"]; }; "get_structured_replies_negotiated", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "see if structured replies are in use"; longdesc = "\ After connecting you may call this to find out if the connection is using structured replies. Note that this setting is sticky; this can return true even after a second L returns false because the server detected a duplicate request. Note that if the connection negotiates extended headers, this function returns true (as extended headers imply structured replies) even if no explicit request for structured replies was attempted."; see_also = [Link "set_request_structured_replies"; Link "get_request_structured_replies"; Link "opt_structured_reply"; Link "opt_extended_headers"; Link "get_protocol"; Link "get_extended_headers_negotiated"]; }; "set_request_meta_context", { default_call with args = [Bool "request"]; ret = RErr; permitted_states = [ Created; Negotiating ]; shortdesc = "control whether connect automatically requests meta contexts"; longdesc = "\ This function controls whether the act of connecting to an export (all C calls when L is false, or L and L when option mode is enabled) will also try to issue NBD_OPT_SET_META_CONTEXT when the server supports structured replies or extended headers and any contexts were registered by L. The default setting is true; however the extra step of negotiating meta contexts is not always desirable: performing both info and go on the same export works without needing to re-negotiate contexts on the second call; integration testing of other servers may benefit from manual invocation of L at other times in the negotiation sequence; and even when using just L, it can be faster to collect the server's results by relying on the callback function passed to L than a series of post-process calls to L. Note that this control has no effect if the server does not negotiate structured replies or extended headers, or if the client did not request any contexts via L. Setting this control to false may cause L to fail."; see_also = [Link "set_opt_mode"; Link "opt_go"; Link "opt_info"; Link "opt_list_meta_context"; Link "opt_set_meta_context"; Link "get_structured_replies_negotiated"; Link "get_request_meta_context"; Link "can_meta_context"]; }; "get_request_meta_context", { default_call with args = []; ret = RBool; permitted_states = []; shortdesc = "see if connect automatically requests meta contexts"; longdesc = "\ Return the state of the automatic meta context request flag on this handle."; see_also = [Link "set_request_meta_context"]; }; "set_handshake_flags", { default_call with args = [ Flags ("flags", handshake_flags) ]; ret = RErr; permitted_states = [ Created ]; shortdesc = "control use of handshake flags"; longdesc = "\ By default, libnbd tries to negotiate all possible handshake flags that are also supported by the server, since omitting a handshake flag can prevent the use of other functionality such as TLS encryption or structured replies. However, for integration testing, it can be useful to reduce the set of flags supported by the client to test that a particular server can handle various clients that were compliant to older versions of the NBD specification. The C argument is a bitmask, including zero or more of the following handshake flags: =over 4 =item C = 1 The server gracefully handles unknown option requests from the client, rather than disconnecting. Without this flag, a client cannot safely request to use extensions such as TLS encryption or structured replies, as the request may cause an older server to drop the connection. =item C = 2 If the client is forced to use C instead of the preferred C, this flag allows the server to send fewer all-zero padding bytes over the connection. =back For convenience, the constant C is available to describe all flags supported by this build of libnbd. Future NBD extensions may add further flags, which in turn may be enabled by default in newer libnbd. As such, when attempting to disable only one specific bit, it is wiser to first call L and modify that value, rather than blindly setting a constant value."; see_also = [Link "get_handshake_flags"; Link "set_request_structured_replies"]; }; "get_handshake_flags", { default_call with args = []; ret = RFlags handshake_flags; may_set_error = false; shortdesc = "see which handshake flags are supported"; longdesc = "\ Return the state of the handshake flags on this handle. When the handle has not yet completed a connection (see L), this returns the flags that the client is willing to use, provided the server also advertises those flags. After the connection is ready (see L), this returns the flags that were actually agreed on between the server and client. If the NBD protocol defines new handshake flags, then the return value from a newer library version may include bits that were undefined at the time of compilation."; see_also = [Link "set_handshake_flags"; Link "get_protocol"; Link "set_strict_mode"; Link "aio_is_created"; Link "aio_is_ready"]; }; "set_pread_initialize", { default_call with args = [Bool "request"]; ret = RErr; shortdesc = "control whether libnbd pre-initializes read buffers"; longdesc = "\ By default, libnbd will pre-initialize the contents of a buffer passed to calls such as L to all zeroes prior to checking for any other errors, so that even if a client application passed in an uninitialized buffer but fails to check for errors, it will not result in a potential security risk caused by an accidental leak of prior heap contents (see CVE-2022-0485 in L for an example of a security hole in an application built against an earlier version of libnbd that lacked consistent pre-initialization). However, for a client application that has audited that an uninitialized buffer is never dereferenced, or which performs its own pre-initialization, libnbd's sanitization efforts merely pessimize performance (although the time spent in pre-initialization may pale in comparison to time spent waiting on network packets). Calling this function with C set to false tells libnbd to skip the buffer initialization step in read commands."; see_also = [Link "get_pread_initialize"; Link "set_strict_mode"; Link "pread"; Link "pread_structured"; Link "aio_pread"; Link "aio_pread_structured"]; }; "get_pread_initialize", { default_call with args = []; ret = RBool; may_set_error = false; shortdesc = "see whether libnbd pre-initializes read buffers"; longdesc = "\ Return whether libnbd performs a pre-initialization of a buffer passed to L and similar to all zeroes, as set by L."; see_also = [Link "set_pread_initialize"; Link "set_strict_mode"; Link "pread"; Link "pread_structured"; Link "aio_pread"; Link "aio_pread_structured"]; }; "set_strict_mode", { default_call with args = [ Flags ("flags", strict_flags) ]; ret = RErr; shortdesc = "control how strictly to follow NBD protocol"; longdesc = "\ By default, libnbd tries to detect requests that would trigger undefined behavior in the NBD protocol, and rejects them client side without causing any network traffic, rather than risking undefined server behavior. However, for integration testing, it can be handy to relax the strictness of libnbd, to coerce it into sending such requests over the network for testing the robustness of the server in dealing with such traffic. The C argument is a bitmask, including zero or more of the following strictness flags: =over 4 =item C = 0x1 If set, this flag rejects client requests that do not comply with the set of advertised server flags (for example, attempting a write on a read-only server, or attempting to use C when L returned false). If clear, this flag relies on the server to reject unexpected commands. =item C = 0x2 If set, this flag rejects client requests that attempt to set a command flag not recognized by libnbd (those outside of C), or a flag not normally associated with a command (such as using C on a read command). If clear, all flags are sent on to the server, even if sending such a flag may cause the server to change its reply in a manner that confuses libnbd, perhaps causing deadlock or ending the connection. Flags that are known by libnbd as associated with a given command (such as C for L gated by L) are controlled by C instead; and C is managed automatically by libnbd unless C is disabled. Note that the NBD protocol only supports 16 bits of command flags, even though the libnbd API uses C; bits outside of the range permitted by the protocol are always a client-side error. =item C = 0x4 If set, this flag rejects client requests that would exceed the export bounds without sending any traffic to the server. If clear, this flag relies on the server to detect out-of-bounds requests. =item C = 0x8 If set, this flag rejects client requests with length 0. If clear, this permits zero-length requests to the server, which may produce undefined results. =item C = 0x10 If set, and the server provided minimum block sizes (see C for L), this flag rejects client requests that do not have length and offset aligned to the server's minimum requirements. If clear, unaligned requests are sent to the server, where it is up to the server whether to honor or reject the request. =item C = 0x20 If set, the client refuses to send a command to the server with more than libnbd's outgoing payload maximum (see C for L), whether or not the server advertised a block size maximum. If clear, oversize requests up to 64MiB may be attempted, although requests larger than 32MiB are liable to cause some servers to disconnect. =item C = 0x40 If set, commands that accept the C flag (such as L and C) ignore the presence or absence of that flag from the caller, instead sending the value over the wire that matches the server's expectations based on whether extended headers were negotiated when the connection was made. If clear, the caller takes on the responsibility for whether the payload length flag is set or clear during the affected command, which can be useful during integration testing but is more likely to lead to undefined behavior. =back For convenience, the constant C is available to describe all strictness flags supported by this build of libnbd. Future versions of libnbd may add further flags, which are likely to be enabled by default for additional client-side filtering. As such, when attempting to relax only one specific bit while keeping remaining checks at the client side, it is wiser to first call L and modify that value, rather than blindly setting a constant value."; see_also = [Link "get_strict_mode"; Link "set_handshake_flags"; Link "stats_bytes_sent"; Link "stats_bytes_received"]; }; "get_strict_mode", { default_call with args = []; ret = RFlags strict_flags; may_set_error = false; shortdesc = "see which strictness flags are in effect"; longdesc = "\ Return flags indicating which protocol strictness items are being enforced locally by libnbd rather than the server. The return value from a newer library version may include bits that were undefined at the time of compilation."; see_also = [Link "set_strict_mode"]; }; "set_opt_mode", { default_call with args = [Bool "enable"]; ret = RErr; permitted_states = [ Created ]; shortdesc = "control option mode, for pausing during option negotiation"; longdesc = "\ Set this flag to true in order to request that a connection command C will pause for negotiation options rather than proceeding all the way to the ready state, when communicating with a newstyle server. This setting has no effect when connecting to an oldstyle server. Note that libnbd defaults to attempting C, C, and C before letting you control remaining negotiation steps; if you need control over these steps as well, first set L to C, and L or L to false, before starting the connection attempt. When option mode is enabled, you have fine-grained control over which options are negotiated, compared to the default of the server negotiating everything on your behalf using settings made before starting the connection. To leave the mode and proceed on to the ready state, you must use L successfully; a failed L returns to the negotiating state to allow a change of export name before trying again. You may also use L or L to end the connection without finishing negotiation."; example = Some "examples/list-exports.c"; see_also = [Link "get_opt_mode"; Link "aio_is_negotiating"; Link "opt_abort"; Link "opt_go"; Link "opt_list"; Link "opt_info"; Link "opt_list_meta_context"; Link "opt_set_meta_context"; Link "opt_starttls"; Link "opt_structured_reply"; Link "set_tls"; Link "set_request_structured_replies"; Link "aio_connect"; Link "shutdown"]; }; "get_opt_mode", { default_call with args = []; ret = RBool; may_set_error = false; shortdesc = "return whether option mode was enabled"; longdesc = "\ Return true if option negotiation mode was enabled on this handle."; see_also = [Link "set_opt_mode"]; }; "opt_go", { default_call with args = []; ret = RErr; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "end negotiation and move on to using an export"; longdesc = "\ Request that the server finish negotiation and move on to serving the export previously specified by the most recent L or L. This can only be used if L enabled option mode. By default, libnbd will automatically request all meta contexts registered by L as part of this call; but this can be suppressed with L, particularly if L was used earlier in the negotiation sequence. If this fails, the server may still be in negotiation, where it is possible to attempt another option such as a different export name; although older servers will instead have killed the connection."; example = Some "examples/list-exports.c"; see_also = [Link "set_opt_mode"; Link "aio_opt_go"; Link "opt_abort"; Link "set_export_name"; Link "connect_uri"; Link "opt_info"; Link "add_meta_context"; Link "set_request_meta_context"; Link "opt_set_meta_context"]; }; "opt_abort", { default_call with args = []; ret = RErr; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "end negotiation and close the connection"; longdesc = "\ Request that the server finish negotiation, gracefully if possible, then close the connection. This can only be used if L enabled option mode."; example = Some "examples/list-exports.c"; see_also = [Link "set_opt_mode"; Link "aio_opt_abort"; Link "opt_go"]; }; "opt_starttls", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "request the server to initiate TLS"; longdesc = "\ Request that the server initiate a secure TLS connection, by sending C. This can only be used if L enabled option mode; furthermore, if you use L to request anything other than the default of C, then libnbd will have already attempted a TLS connection prior to allowing you control over option negotiation. This command is disabled if L reports false. This function is mainly useful for integration testing of corner cases in server handling; in particular, misuse of this function when coupled with a server that is not careful about resetting stateful commands such as L could result in a security hole (see CVE-2021-3716 against nbdkit, for example). Thus, when security is a concern, you should instead prefer to use L with C and let libnbd negotiate TLS automatically. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection, which can include when the server rejects credentials supplied during the TLS handshake). Note that the NBD protocol documents that requesting TLS after it is already enabled is a client error; most servers will gracefully fail a second request, but that does not downgrade a TLS session that has already been established, as reported by L."; see_also = [Link "set_opt_mode"; Link "aio_opt_starttls"; Link "set_tls"; Link "get_tls_negotiated"; Link "supports_tls"] }; "opt_extended_headers", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "request the server to enable extended headers"; longdesc = "\ Request that the server use extended headers, by sending C. This can only be used if L enabled option mode; furthermore, libnbd defaults to automatically requesting this unless you use L or L prior to connecting. This function is mainly useful for integration testing of corner cases in server handling. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection). Note that some servers fail a second request as redundant; libnbd assumes that once one request has succeeded, then extended headers are supported (as visible by L) regardless if later calls to this function return false. If this function returns true, the use of structured replies is implied."; see_also = [Link "set_opt_mode"; Link "aio_opt_extended_headers"; Link "opt_go"; Link "set_request_extended_headers"; Link "set_request_structured_replies"] }; "opt_structured_reply", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "request the server to enable structured replies"; longdesc = "\ Request that the server use structured replies, by sending C. This can only be used if L enabled option mode; furthermore, libnbd defaults to automatically requesting this unless you use L prior to connecting. This function is mainly useful for integration testing of corner cases in server handling. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection). Note that some servers fail a second request as redundant; libnbd assumes that once one request has succeeded, then structured replies are supported (as visible by L) regardless if later calls to this function return false. Similarly, a server may fail this request if extended headers are already negotiated, since extended headers take priority."; see_also = [Link "set_opt_mode"; Link "aio_opt_structured_reply"; Link "opt_go"; Link "set_request_structured_replies"] }; "opt_list", { default_call with args = [ Closure list_closure ]; ret = RInt; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "request the server to list all exports during negotiation"; longdesc = "\ Request that the server list all exports that it supports. This can only be used if L enabled option mode. The C function is called once per advertised export, with any C passed to this function, and with C and C supplied by the server. Many servers omit descriptions, in which case C will be an empty string. Remember that it is not safe to call L from within the context of the callback function; rather, your code must copy any C needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of exports that were advertised by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list to avoid being an information leak, may encounter a failure after delivering partial results, or may refuse to answer more than one query per connection in the interest of avoiding negotiation that does not resolve. Thus, this function may succeed even when no exports are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of exports that might be advertised, so client code should be aware that a server may send a lengthy list. For L you will need to allow clients to make list requests by adding C to the C<[generic]> section of F. For L, a description is set with I<-D>."; example = Some "examples/list-exports.c"; see_also = [Link "set_opt_mode"; Link "aio_opt_list"; Link "opt_go"; Link "set_export_name"]; }; "opt_info", { default_call with args = []; ret = RErr; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "request the server for information about an export"; longdesc = "\ Request that the server supply information about the export name previously specified by the most recent L or L. This can only be used if L enabled option mode. If successful, functions like L and L will report details about that export. If L is set (the default) and structured replies or extended headers were negotiated, it is also valid to use L after this call. However, it may be more efficient to clear that setting and manually utilize L with its callback approach, for learning which contexts an export supports. In general, if L is called next, that call will likely succeed with the details remaining the same, although this is not guaranteed by all servers. Not all servers understand this request, and even when it is understood, the server might fail the request even when a corresponding L would succeed."; see_also = [Link "set_opt_mode"; Link "aio_opt_info"; Link "opt_go"; Link "set_export_name"; Link "set_request_meta_context"; Link "opt_list_meta_context"]; }; "opt_list_meta_context", { default_call with args = [ Closure context_closure ]; ret = RInt; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "list available meta contexts, using implicit query list"; longdesc = "\ Request that the server list available meta contexts associated with the export previously specified by the most recent L or L, and with a list of queries from prior calls to L (see L if you want to supply an explicit query list instead). This can only be used if L enabled option mode. The NBD protocol allows a client to decide how many queries to ask the server. Rather than taking that list of queries as a parameter to this function, libnbd reuses the current list of requested meta contexts as set by L; you can use L to set up a different list of queries. When the list is empty, a server will typically reply with all contexts that it supports; when the list is non-empty, the server will reply only with supported contexts that match the client's request. Note that a reply by the server might be encoded to represent several feasible contexts within one string, rather than multiple strings per actual context name that would actually succeed during L; so it is still necessary to use L after connecting to see which contexts are actually supported. The C function is called once per server reply, with any C passed to this function, and with C supplied by the server. Remember that it is not safe to call L from within the context of the callback function; rather, your code must copy any C needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of replies that might be advertised, so client code should be aware that a server may send a lengthy list."; see_also = [Link "set_opt_mode"; Link "aio_opt_list_meta_context"; Link "opt_list_meta_context_queries"; Link "add_meta_context"; Link "clear_meta_contexts"; Link "opt_go"; Link "set_export_name"; Link "opt_set_meta_context"]; }; "opt_list_meta_context_queries", { default_call with args = [ StringList "queries"; Closure context_closure ]; ret = RInt; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "list available meta contexts, using explicit query list"; longdesc = "\ Request that the server list available meta contexts associated with the export previously specified by the most recent L or L, and with an explicit list of queries provided as a parameter (see L if you want to reuse an implicit query list instead). This can only be used if L enabled option mode. The NBD protocol allows a client to decide how many queries to ask the server. For this function, the list is explicit in the C parameter. When the list is empty, a server will typically reply with all contexts that it supports; when the list is non-empty, the server will reply only with supported contexts that match the client's request. Note that a reply by the server might be encoded to represent several feasible contexts within one string, rather than multiple strings per actual context name that would actually succeed during L; so it is still necessary to use L after connecting to see which contexts are actually supported. The C function is called once per server reply, with any C passed to this function, and with C supplied by the server. Remember that it is not safe to call L from within the context of the callback function; rather, your code must copy any C needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of replies that might be advertised, so client code should be aware that a server may send a lengthy list."; see_also = [Link "set_opt_mode"; Link "aio_opt_list_meta_context_queries"; Link "opt_list_meta_context"; Link "opt_go"; Link "set_export_name"]; }; "opt_set_meta_context", { default_call with args = [ Closure context_closure ]; ret = RInt; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "select specific meta contexts, using implicit query list"; longdesc = "\ Request that the server supply all recognized meta contexts registered through prior calls to L, in conjunction with the export previously specified by the most recent L or L. This can only be used if L enabled option mode. Normally, this function is redundant, as L automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with L to bypass the automatic context request normally performed by L. The NBD protocol allows a client to decide how many queries to ask the server. Rather than taking that list of queries as a parameter to this function, libnbd reuses the current list of requested meta contexts as set by L; you can use L to set up a different list of queries (see L to pass an explicit list of contexts instead). Since this function is primarily designed for testing servers, libnbd does not prevent the use of this function on an empty list or when L has disabled structured replies, in order to see how a server behaves. The C function is called once per server reply, with any C passed to this function, and with C supplied by the server. Additionally, each server name will remain visible through L until the next attempt at L or L, as well as L or L that trigger an automatic meta context request. Remember that it is not safe to call any C APIs from within the context of the callback function. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list."; see_also = [Link "set_opt_mode"; Link "aio_opt_set_meta_context"; Link "add_meta_context"; Link "clear_meta_contexts"; Link "opt_set_meta_context_queries"; Link "opt_go"; Link "set_export_name"; Link "opt_list_meta_context"; Link "set_request_meta_context"; Link "can_meta_context"]; }; "opt_set_meta_context_queries", { default_call with args = [ StringList "queries"; Closure context_closure ]; ret = RInt; permitted_states = [ Negotiating ]; modifies_fd = true; shortdesc = "select specific meta contexts, using explicit query list"; longdesc = "\ Request that the server supply all recognized meta contexts passed in through C, in conjunction with the export previously specified by the most recent L or L. This can only be used if L enabled option mode. Normally, this function is redundant, as L automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with L to bypass the automatic context request normally performed by L. The NBD protocol allows a client to decide how many queries to ask the server. This function takes an explicit list of queries; to instead reuse an implicit list, see L. Since this function is primarily designed for testing servers, libnbd does not prevent the use of this function on an empty list or when L has disabled structured replies, in order to see how a server behaves. The C function is called once per server reply, with any C passed to this function, and with C supplied by the server. Additionally, each server name will remain visible through L until the next attempt at L or L, as well as L or L that trigger an automatic meta context request. Remember that it is not safe to call any C APIs from within the context of the callback function. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list."; see_also = [Link "set_opt_mode"; Link "aio_opt_set_meta_context_queries"; Link "opt_set_meta_context"; Link "opt_go"; Link "set_export_name"; Link "opt_list_meta_context_queries"; Link "set_request_meta_context"; Link "can_meta_context"]; }; "add_meta_context", { default_call with args = [ String "name" ]; ret = RErr; permitted_states = [ Created; Negotiating ]; shortdesc = "ask server to negotiate metadata context"; longdesc = "\ During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as C<\"base:allocation\">) which describe information returned by the L command (for C<\"base:allocation\"> this is whether blocks of data are allocated, zero or sparse). This call adds one metadata context to the list to be negotiated. You can call it as many times as needed. The list is initially empty when the handle is created; you can check the contents of the list with L and L, or clear it with L. The NBD protocol limits meta context names to 4096 bytes, but servers may not support the full length. The encoding of meta context names is always UTF-8. Not all servers support all metadata contexts. To learn if a context was actually negotiated, call L after connecting. The single parameter is the name of the metadata context, for example C. Blibnbd.hE> includes defined constants beginning with C for some well-known contexts, but you are free to pass in other contexts. Other metadata contexts are server-specific, but include C<\"qemu:dirty-bitmap:...\"> and C<\"qemu:allocation-depth\"> for qemu-nbd (see qemu-nbd I<-B> and I<-A> options)."; see_also = [Link "block_status_64"; Link "can_meta_context"; Link "get_nr_meta_contexts"; Link "get_meta_context"; Link "clear_meta_contexts"]; }; "get_nr_meta_contexts", { default_call with args = []; ret = RSizeT; shortdesc = "return the current number of requested meta contexts"; longdesc = "\ During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as C<\"base:allocation\">) which describe information returned by the L command (for C<\"base:allocation\"> this is whether blocks of data are allocated, zero or sparse). This command returns how many meta contexts have been added to the list to request from the server via L. The server is not obligated to honor all of the requests; to see what it actually supports, see L."; see_also = [Link "block_status_64"; Link "can_meta_context"; Link "add_meta_context"; Link "get_meta_context"; Link "clear_meta_contexts"]; }; "get_meta_context", { default_call with args = [ SizeT "i" ]; ret = RString; shortdesc = "return the i'th meta context request"; longdesc = "\ During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as C<\"base:allocation\">) which describe information returned by the L command (for C<\"base:allocation\"> this is whether blocks of data are allocated, zero or sparse). This command returns the i'th meta context request, as added by L, and bounded by L."; see_also = [Link "block_status_64"; Link "can_meta_context"; Link "add_meta_context"; Link "get_nr_meta_contexts"; Link "clear_meta_contexts"]; }; "clear_meta_contexts", { default_call with args = []; ret = RErr; permitted_states = [ Created; Negotiating ]; shortdesc = "reset the list of requested meta contexts"; longdesc = "\ During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as C<\"base:allocation\">) which describe information returned by the L command (for C<\"base:allocation\"> this is whether blocks of data are allocated, zero or sparse). This command resets the list of meta contexts to request back to an empty list, for re-population by further use of L. It is primarily useful when option negotiation mode is selected (see L), for altering the list of attempted contexts between subsequent export queries."; see_also = [Link "block_status_64"; Link "can_meta_context"; Link "add_meta_context"; Link "get_nr_meta_contexts"; Link "get_meta_context"; Link "set_opt_mode"]; }; "set_uri_allow_transports", { default_call with args = [ Flags ("mask", allow_transport_flags) ]; ret = RErr; permitted_states = [ Created ]; shortdesc = "set the allowed transports in NBD URIs"; longdesc = "\ Set which transports are allowed to appear in NBD URIs. The default is to allow any transport. The C parameter may contain any of the following flags ORed together: =over 4 =item C = 0x1 =item C = 0x2 =item C = 0x4 =back For convenience, the constant C is available to describe all transports recognized by this build of libnbd. A future version of the library may add new flags."; see_also = [Link "connect_uri"; Link "set_uri_allow_tls"]; }; "set_uri_allow_tls", { default_call with args = [ Enum ("tls", tls_enum) ]; ret = RErr; permitted_states = [ Created ]; shortdesc = "set the allowed TLS settings in NBD URIs"; longdesc = "\ Set which TLS settings are allowed to appear in NBD URIs. The default is to allow either non-TLS or TLS URIs. The C parameter can be: =over 4 =item C TLS URIs are not permitted, ie. a URI such as C will be rejected. =item C This is the default. TLS may be used or not, depending on whether the URI uses C or C. =item C TLS URIs are required. All URIs must use C. =back"; see_also = [Link "connect_uri"; Link "set_uri_allow_transports"]; }; "set_uri_allow_local_file", { default_call with args = [ Bool "allow" ]; ret = RErr; permitted_states = [ Created ]; shortdesc = "set the allowed transports in NBD URIs"; longdesc = "\ Allow NBD URIs to reference local files. This is I by default. Currently this setting only controls whether the C parameter in NBD URIs is allowed."; see_also = [Link "connect_uri"]; }; "connect_uri", { default_call with args = [ String "uri" ]; ret = RErr; permitted_states = [ Created ]; modifies_fd = true; shortdesc = "connect to NBD URI"; longdesc = "\ Connect (synchronously) to an NBD server and export by specifying the NBD URI. NBD URIs are a standard way to specify a network block device endpoint, using a syntax like C<\"nbd://example.com\"> which is convenient, well defined and future proof. This call works by parsing the URI parameter and calling L and L and other calls as needed, followed by L, L or L. " ^ blocking_connect_call_description ^ " =head2 Example URIs supported =over 4 =item C Connect over TCP, unencrypted, to C port 10809. =item C Connect over TCP with TLS, to C port 10809. If the server does not support TLS then this will fail. =item C Connect over the Unix domain socket F to an NBD server running locally. The export name is set to C (note without any leading C character). =item C Connect over a Unix domain socket, enabling TLS and setting the path to a directory containing certificates and keys. =item C In this scenario libnbd is running in a virtual machine. Connect over C to an NBD server running on the hypervisor. =back =head2 Supported URI formats The following schemes are supported in the current version of libnbd: =over 4 =item C Connect over TCP without using TLS. =item C Connect over TCP. TLS is required and the connection will fail if the server does not support TLS. =item C =item C Connect over a Unix domain socket, without or with TLS respectively. The C parameter is required. =item C =item C Connect over the C transport, without or with TLS respectively. You can use L to see if this build of libnbd supports C. =back The authority part of the URI (C<[username@][servername][:port]>) is parsed depending on the transport. For TCP it specifies the server to connect to and optional port number. For C<+unix> it should not be present. For C<+vsock> the server name is the numeric CID (eg. C<2> to connect to the host), and the optional port number may be present. If the C is present it is used for TLS authentication. For all transports, an export name may be present, parsed in accordance with the NBD URI specification. Finally the query part of the URI can contain: =over 4 =item BF Specifies the Unix domain socket to connect on. Must be present for the C<+unix> transport and must not be present for the other transports. =item BF Set the certificates directory. See L. Note this is not allowed by default - see next section. =item BF Set the PSK file. See L. Note this is not allowed by default - see next section. =item B Do not verify the server certificate. See L. The default is C. =back =head2 Disable URI features For security reasons you might want to disable certain URI features. Pre-filtering URIs is error-prone and should not be attempted. Instead use the libnbd APIs below to control what can appear in URIs. Note you must call these functions on the same handle before calling L or L. =over 4 =item TCP, Unix domain socket or C transports Default: all allowed To select which transports are allowed call L. =item TLS Default: both non-TLS and TLS connections allowed To force TLS off or on in URIs call L. =item Connect to Unix domain socket in the local filesystem Default: allowed To prevent this you must disable the C<+unix> transport using L. =item Read from local files Default: denied To allow URIs to contain references to local files (eg. for parameters like C) call L. =back =head2 Overriding the export name It is possible to override the export name portion of a URI by using L to enable option mode, then using L and L as part of subsequent negotiation. =head2 Optional features This call will fail if libnbd was not compiled with libxml2; you can test whether this is the case with L. Support for URIs that require TLS will fail if libnbd was not compiled with gnutls; you can test whether this is the case with L. =head2 Constructing a URI from an existing connection See L."; example = Some "examples/connect-uri.c"; see_also = [URLLink "https://github.com/NetworkBlockDevice/nbd/blob/master/doc/uri.md"; Link "aio_connect_uri"; Link "set_export_name"; Link "set_tls"; Link "set_opt_mode"; Link "get_uri"; Link "supports_vsock"; Link "supports_uri"]; }; "connect_unix", { default_call with args = [ Path "unixsocket" ]; ret = RErr; permitted_states = [ Created ]; modifies_fd = true; shortdesc = "connect to NBD server over a Unix domain socket"; longdesc = "\ Connect (synchronously) over the named Unix domain socket (C) to an NBD server running on the same machine. " ^ blocking_connect_call_description; example = Some "examples/fetch-first-sector.c"; see_also = [Link "aio_connect_unix"; Link "set_opt_mode"]; }; "connect_vsock", { default_call with args = [ UInt32 "cid"; UInt32 "port" ]; ret = RErr; permitted_states = [ Created ]; modifies_fd = true; shortdesc = "connect to NBD server over AF_VSOCK protocol"; longdesc = "\ Connect (synchronously) over the C protocol from a virtual machine to an NBD server, usually running on the host. The C and C parameters specify the server address. Usually C should be C<2> (to connect to the host), and C might be C<10809> or another port number assigned to you by the host administrator. Not all systems support C; to determine if libnbd was built on a system with vsock support, see L. " ^ blocking_connect_call_description; see_also = [Link "aio_connect_vsock"; Link "set_opt_mode"; Link "supports_vsock"]; }; "connect_tcp", { default_call with args = [ String "hostname"; String "port" ]; ret = RErr; permitted_states = [ Created ]; modifies_fd = true; shortdesc = "connect to NBD server over a TCP port"; longdesc = "\ Connect (synchronously) to the NBD server listening on C. The C may be a port name such as C<\"nbd\">, or it may be a port number as a string such as C<\"10809\">. " ^ blocking_connect_call_description; see_also = [Link "aio_connect_tcp"; Link "set_opt_mode"]; }; "connect_socket", { default_call with args = [ Fd "sock" ]; ret = RErr; permitted_states = [ Created ]; modifies_fd = true; shortdesc = "connect directly to a connected socket"; longdesc = "\ Pass a connected socket C through which libnbd will talk to the NBD server. The caller is responsible for creating and connecting this socket by some method, before passing it to libnbd. If this call returns without error then socket ownership is passed to libnbd. Libnbd will close the socket when the handle is closed. The caller must not use the socket in any way. " ^ blocking_connect_call_description; see_also = [Link "aio_connect_socket"; Link "connect_command"; Link "set_opt_mode"; ExternalLink ("socket", 7)]; }; "connect_command", { default_call with args = [ StringList "argv" ]; ret = RErr; permitted_states = [ Created ]; modifies_fd = true; shortdesc = "connect to NBD server command"; longdesc = "\ Run the command as a subprocess and connect to it over stdin/stdout. This is for use with NBD servers which can behave like inetd clients, such as L using the I<-s>/I<--single> flag, and L with port number set to 0. To run L, use L instead. =head2 Subprocess Libnbd will fork the C command and pass the NBD socket to it using file descriptors 0 and 1 (stdin/stdout): ┌─────────┬─────────┐ ┌────────────────┐ │ program │ libnbd │ │ NBD server │ │ │ │ │ (argv) │ │ │ socket ╍╍╍╍╍╍╍╍▶ stdin/stdout │ └─────────┴─────────┘ └────────────────┘ When the NBD handle is closed the server subprocess is killed. " ^ blocking_connect_call_description; see_also = [Link "aio_connect_command"; Link "connect_systemd_socket_activation"; Link "kill_subprocess"; Link "set_opt_mode"]; example = Some "examples/connect-command.c"; }; "connect_systemd_socket_activation", { default_call with args = [ StringList "argv" ]; ret = RErr; permitted_states = [ Created ]; modifies_fd = true; shortdesc = "connect using systemd socket activation"; longdesc = "\ Run the command as a subprocess and connect to it using systemd socket activation. This is especially useful for running L as a subprocess of libnbd, for example to use it to open qcow2 files. To run nbdkit as a subprocess, this function can be used, or L. To run L as a subprocess, this function cannot be used, you must use L. =head2 Socket activation Libnbd will fork the C command and pass an NBD socket to it using special C environment variables (as defined by the systemd socket activation protocol). ┌─────────┬─────────┐ ┌───────────────┐ │ program │ libnbd │ │ qemu-nbd or │ │ │ │ │ other server │ │ │ socket ╍╍╍╍╍╍╍╍▶ │ └─────────┴─────────┘ └───────────────┘ When the NBD handle is closed the server subprocess is killed. =head3 Socket name The socket activation protocol lets you optionally give the socket a name. If used, the name is passed to the NBD server using the C environment variable. To provide a socket name, call L before calling the connect function. " ^ blocking_connect_call_description; see_also = [Link "aio_connect_systemd_socket_activation"; Link "connect_command"; Link "kill_subprocess"; Link "set_opt_mode"; Link "set_socket_activation_name"; Link "get_socket_activation_name"; ExternalLink ("qemu-nbd", 1); URLLink "http://0pointer.de/blog/projects/socket-activation.html"]; example = Some "examples/open-qcow2.c"; }; "set_socket_activation_name", { default_call with args = [ String "socket_name" ]; ret = RErr; permitted_states = [ Created ]; shortdesc = "set the socket activation name"; longdesc = "\ When running an NBD server using L you can optionally name the socket. Call this function before connecting to the server. Some servers such as L can use this information to associate the socket with a name used on the command line, but most servers will ignore it. The name is passed through the C environment variable. The parameter C can be a short alphanumeric string. If it is set to the empty string (also the default when the handle is created) then the name C will be seen by the server."; see_also = [Link "connect_systemd_socket_activation"; Link "get_socket_activation_name"]; }; "get_socket_activation_name", { default_call with args = []; ret = RString; shortdesc = "get the socket activation name"; longdesc = "\ Return the socket name used when you call L on the same handle. By default this will return the empty string meaning that the server will see the name C."; see_also = [Link "connect_systemd_socket_activation"; Link "set_socket_activation_name"]; }; "is_read_only", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "is the NBD export read-only?"; longdesc = "\ Returns true if the NBD export is read-only; writes and write-like operations will fail." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"]; example = Some "examples/server-flags.c"; }; "can_flush", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support the flush command?"; longdesc = "\ Returns true if the server supports the flush command (see L, L). Returns false if the server does not." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"; Link "flush"; Link "aio_flush"]; example = Some "examples/server-flags.c"; }; "can_fua", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support the FUA flag?"; longdesc = "\ Returns true if the server supports the FUA flag on certain commands (see L)." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"; Link "pwrite"; Link "zero"; Link "trim"]; example = Some "examples/server-flags.c"; }; "is_rotational", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "is the NBD disk rotational (like a disk)?"; longdesc = "\ Returns true if the disk exposed over NBD is rotational (like a traditional floppy or hard disk). Returns false if the disk has no penalty for random access (like an SSD or RAM disk)." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"]; example = Some "examples/server-flags.c"; }; "can_trim", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support the trim command?"; longdesc = "\ Returns true if the server supports the trim command (see L, L). Returns false if the server does not." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"; Link "trim"; Link "aio_trim"]; example = Some "examples/server-flags.c"; }; "can_zero", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support the zero command?"; longdesc = "\ Returns true if the server supports the zero command (see L, L). Returns false if the server does not." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"; Link "zero"; Link "aio_zero"; Link "can_fast_zero"]; example = Some "examples/server-flags.c"; }; "can_fast_zero", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support the fast zero flag?"; longdesc = "\ Returns true if the server supports the use of the C flag to the zero command (see L, L). Returns false if the server does not." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"; Link "zero"; Link "aio_zero"; Link "can_zero"]; example = Some "examples/server-flags.c"; }; "can_block_status_payload", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support the block status payload flag?"; longdesc = "\ Returns true if the server supports the use of the C flag to allow filtering of the block status command (see L). Returns false if the server does not. Note that this will never return true if L is false." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"; Link "get_extended_headers_negotiated"; Link "block_status_filter"]; example = Some "examples/server-flags.c"; }; "can_df", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support the don't fragment flag to pread?"; longdesc = "\ Returns true if the server supports structured reads with an ability to request a non-fragmented read (see L, L). Returns false if the server either lacks structured reads or if it does not support a non-fragmented read request." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"; Link "pread_structured"; Link "aio_pread_structured"]; example = Some "examples/server-flags.c"; }; "can_multi_conn", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support multi-conn?"; longdesc = "\ Returns true if the server supports multi-conn. Returns false if the server does not. It is not safe to open multiple handles connecting to the same server if you will write to the server and the server does not advertise multi-conn support. The safe way to check for this is to open one connection, check this flag is true, then open further connections as required." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; SectionLink "Multi-conn"; Link "opt_info"]; example = Some "examples/server-flags.c"; }; "can_cache", { default_call with args = []; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support the cache command?"; longdesc = "\ Returns true if the server supports the cache command (see L, L). Returns false if the server does not." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"; Link "cache"; Link "aio_cache"]; example = Some "examples/server-flags.c"; }; "can_meta_context", { default_call with args = [String "metacontext"]; ret = RBool; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "does the server support a specific meta context?"; longdesc = "\ Returns true if the server supports the given meta context (see L). Returns false if the server does not. It is possible for this command to fail if meta contexts were requested but there is a missing or failed attempt at NBD_OPT_SET_META_CONTEXT during option negotiation. If the server supports block status filtering (see L, this function must return true for any filter name passed to L. The single parameter is the name of the metadata context, for example C. Blibnbd.hE> includes defined constants for well-known namespace contexts beginning with C, but you are free to pass in other contexts." ^ non_blocking_test_call_description; see_also = [SectionLink "Flag calls"; Link "opt_info"; Link "add_meta_context"; Link "block_status_64"; Link "aio_block_status_64"; Link "set_request_meta_context"; Link "opt_set_meta_context"]; }; "get_protocol", { default_call with args = []; ret = RStaticString; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "return the NBD protocol variant"; longdesc = "\ Return the NBD protocol variant in use on the connection. At the moment this returns one of the strings C<\"oldstyle\">, C<\"newstyle\"> or C<\"newstyle-fixed\">. Other strings might be returned in the future. Most modern NBD servers use C<\"newstyle-fixed\">. " ^ non_blocking_test_call_description; see_also = [Link "get_handshake_flags"; Link "get_structured_replies_negotiated"; Link "get_tls_negotiated"; Link "get_block_size"]; }; "get_size", { default_call with args = []; ret = RInt64; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "return the export size"; longdesc = "\ Returns the size in bytes of the NBD export. Note that this call fails with C for an unlikely server that advertises a size which cannot fit in a 64-bit signed integer. L I<--size> option is a way to access this API from shell scripts." ^ non_blocking_test_call_description; see_also = [SectionLink "Size of the export"; Link "opt_info"]; example = Some "examples/get-size.c"; }; "get_block_size", { default_call with args = [Enum ("size_type", block_size_enum)]; ret = RInt64; permitted_states = [ Negotiating; Connected; Closed ]; shortdesc = "return a specific server block size constraint"; longdesc = "\ Returns a specific block size constraint advertised by the server. If zero is returned it means the server did not advertise a constraint. Constraints are hints. Servers differ in their behaviour as to whether they enforce constraints or not. The C parameter selects which constraint to read. It can be one of: =over 4 =item C = 0 If non-zero, this will be a power of 2 between 1 and 64k; any client request that is not aligned in length or offset to this size is likely to fail with C. The image size will generally also be a multiple of this value (if not, the final few bytes are inaccessible while obeying alignment constraints). If zero (meaning no information was returned by the server), it is safest to assume a minimum block size of 512, although many servers support a minimum block size of 1. If the server provides a constraint, then libnbd defaults to honoring that constraint client-side unless C is cleared in C. =item C = 1 If non-zero, this is a power of 2 representing the preferred size for efficient I/O. Smaller requests may incur overhead such as read-modify-write cycles that will not be present when using I/O that is a multiple of this value. This value may be larger than the size of the export. If zero (meaning no information was returned by the server), using 4k as a preferred block size tends to give decent performance. =item C = 2 If non-zero, this represents the maximum length that the server is willing to handle during L or L. Other functions like L may still be able to use larger sizes. Note that this function returns what the server advertised, but libnbd itself imposes a maximum of 64M. If zero (meaning no information was returned by the server), some NBD servers will abruptly disconnect if a transaction sends or receives more than 32M of data. =item C = 3 This value is not advertised by the server, but rather represents the maximum outgoing payload size for a given connection that libnbd will enforce unless C is cleared in C. It is always non-zero: never smaller than 1M, never larger than 64M, and matches C when possible. =back Future NBD extensions may result in additional C values. Note that by default, libnbd requests all available block sizes, but that a server may differ in what sizes it chooses to report if L alters whether the client requests sizes. " ^ non_blocking_test_call_description; see_also = [Link "get_protocol"; Link "set_request_block_size"; Link "get_size"; Link "opt_info"] }; "pread", { default_call with args = [ BytesOut ("buf", "count"); UInt64 "offset" ]; (* We could silently accept flag DF, but it really only makes sense * with callbacks, because otherwise there is no observable change * except that the server may fail where it would otherwise succeed. *) optargs = [ OFlags ("flags", cmd_flags, Some []) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "read from the NBD server"; longdesc = "\ Issue a read command to the NBD server for the range starting at C and ending at C + C - 1. NBD can only read all or nothing using this call. The call returns when the data has been read fully into C or there is an error. See also L, if finer visibility is required into the server's replies, or if you want to use C. Note that libnbd currently enforces a maximum read buffer of 64MiB, even if the server would permit a larger buffer in a single transaction; attempts to exceed this will result in an C error. The server may enforce a smaller limit, which can be learned with L. The C parameter must be C<0> for now (it exists for future NBD protocol extensions). Note that if this command fails, and L returns true, then libnbd sanitized C, but it is unspecified whether the contents of C will read as zero or as partial results from the server. If L returns false, then libnbd did not sanitize C, and the contents are undefined on failure." ^ strict_call_description; see_also = [Link "aio_pread"; Link "pread_structured"; Link "get_block_size"; Link "set_strict_mode"; Link "set_pread_initialize"]; example = Some "examples/fetch-first-sector.c"; }; "pread_structured", { default_call with args = [ BytesOut ("buf", "count"); UInt64 "offset"; Closure chunk_closure ]; optargs = [ OFlags ("flags", cmd_flags, Some ["DF"]) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "read from the NBD server"; longdesc = "\ Issue a read command to the NBD server for the range starting at C and ending at C + C - 1. The server's response may be subdivided into chunks which may arrive out of order before reassembly into the original buffer; the C callback is used for notification after each chunk arrives, and may perform additional sanity checking on the server's reply. The callback cannot call C APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns C<-1>, and no earlier error has been detected, then the overall read command will fail with any non-zero value stored into the callback's C parameter (with a default of C); but any further chunks will still invoke the callback. The C function is called once per chunk of data received, with the C passed to this function. The C and C parameters represent the subset of the original buffer which has just been populated by results from the server (in C, C always points within the original C; but this guarantee may not extend to other language bindings). The C parameter represents the absolute offset at which C begins within the image (note that this is not the relative offset of C within the original buffer C). Changes to C on output are ignored unless the callback fails. The input meaning of the C parameter is controlled by the C parameter, which is one of =over 4 =item C = 1 C was populated with C bytes of data. On input, C contains the errno value of any earlier detected error, or zero. =item C = 2 C represents a hole, and contains C NUL bytes. On input, C contains the errno value of any earlier detected error, or zero. =item C = 3 C is 0, so C is unusable. On input, C contains the errno value reported by the server as occurring while reading that C, regardless if any earlier error has been detected. =back Future NBD extensions may permit other values for C, but those will not be returned to a client that has not opted in to requesting such extensions. If the server is non-compliant, it is possible for the C function to be called more times than you expect or with C 0 for C or C. It is also possible that the C function is not called at all (in particular, C is used only when an error is associated with a particular offset, and not when the server reports a generic error), but you are guaranteed that the callback was called at least once if the overall read succeeds. Libnbd does not validate that the server obeyed the requirement that a read call must not have overlapping chunks and must not succeed without enough chunks to cover the entire request. Note that libnbd currently enforces a maximum read buffer of 64MiB, even if the server would permit a larger buffer in a single transaction; attempts to exceed this will result in an C error. The server may enforce a smaller limit, which can be learned with L. The C parameter may be C<0> for no flags, or may contain C meaning that the server should not reply with more than one fragment (if that is supported - some servers cannot do this, see L). Libnbd does not validate that the server actually obeys the flag. Note that if this command fails, and L returns true, then libnbd sanitized C, but it is unspecified whether the contents of C will read as zero or as partial results from the server. If L returns false, then libnbd did not sanitize C, and the contents are undefined on failure." ^ strict_call_description; see_also = [Link "can_df"; Link "pread"; Link "aio_pread_structured"; Link "get_block_size"; Link "set_strict_mode"; Link "set_pread_initialize"; Link "set_request_block_size"]; }; "pwrite", { default_call with args = [ BytesIn ("buf", "count"); UInt64 "offset" ]; optargs = [ OFlags ("flags", cmd_flags, Some ["FUA"; "PAYLOAD_LEN"]) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "write to the NBD server"; longdesc = "\ Issue a write command to the NBD server, writing the data in C to the range starting at C and ending at C + C - 1. NBD can only write all or nothing using this call. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if L is true. Note that libnbd defaults to enforcing a maximum write buffer of the lesser of 64MiB or any maximum payload size advertised by the server; attempts to exceed this will generally result in a client-side C error, rather than a server-side disconnection. The actual limit can be learned with L. The C parameter may be C<0> for no flags, or may contain C meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see L). For convenience, unless C was used to disable C, libnbd ignores the presence or absence of the flag C in C, while correctly using the flag over the wire according to whether extended headers were negotiated." ^ strict_call_description; see_also = [Link "can_fua"; Link "is_read_only"; Link "aio_pwrite"; Link "get_block_size"; Link "set_strict_mode"]; example = Some "examples/reads-and-writes.c"; }; "shutdown", { default_call with args = []; optargs = [ OFlags ("flags", shutdown_flags, None) ]; ret = RErr; permitted_states = [ Negotiating; Connected ]; modifies_fd = true; shortdesc = "disconnect from the NBD server"; longdesc = "\ Issue the disconnect command to the NBD server. This is a nice way to tell the server we are going away, but from the client's point of view has no advantage over abruptly closing the connection (see L). This function works whether or not the handle is ready for transmission of commands. If more fine-grained control is needed, see L and L. The C argument is a bitmask, including zero or more of the following shutdown flags: =over 4 =item C = 0x10000 If there are any pending requests which have not yet been sent to the server (see L), abandon them without sending them to the server, rather than the usual practice of issuing those commands before informing the server of the intent to disconnect. =back For convenience, the constant C is available to describe all shutdown flags recognized by this build of libnbd. A future version of the library may add new flags."; see_also = [Link "close"; Link "aio_disconnect"; Link "aio_opt_abort"]; example = Some "examples/reads-and-writes.c"; }; "flush", { default_call with args = []; optargs = [ OFlags ("flags", cmd_flags, Some []) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "send flush command to the NBD server"; longdesc = "\ Issue the flush command to the NBD server. The function should return when all write commands which have completed have been committed to permanent storage on the server. Note this will generally return an error if L is false. The C parameter must be C<0> for now (it exists for future NBD protocol extensions)." ^ strict_call_description; see_also = [Link "can_flush"; Link "aio_flush"; Link "set_strict_mode"]; }; "trim", { default_call with args = [ UInt64 "count"; UInt64 "offset" ]; optargs = [ OFlags ("flags", cmd_flags, Some ["FUA"]) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "send trim command to the NBD server"; longdesc = "\ Issue a trim command to the NBD server, which if supported by the server causes a hole to be punched in the backing store starting at C and ending at C + C - 1. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if L is false or L is true. Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum trim size, although a future extension may add a constraint visible in L. The C parameter may be C<0> for no flags, or may contain C meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see L)." ^ strict_call_description; see_also = [Link "can_fua"; Link "can_trim"; Link "is_read_only"; Link "aio_trim"; Link "set_strict_mode"]; }; "cache", { default_call with args = [ UInt64 "count"; UInt64 "offset" ]; optargs = [ OFlags ("flags", cmd_flags, Some []) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "send cache (prefetch) command to the NBD server"; longdesc = "\ Issue the cache (prefetch) command to the NBD server, which if supported by the server causes data to be prefetched into faster storage by the server, speeding up a subsequent L call. The server can also silently ignore this command. Note this will generally return an error if L is false. Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum cache size, although a future extension may add a constraint visible in L. The C parameter must be C<0> for now (it exists for future NBD protocol extensions)." ^ strict_call_description; see_also = [Link "can_cache"; Link "aio_cache"; Link "set_strict_mode"]; }; "zero", { default_call with args = [ UInt64 "count"; UInt64 "offset" ]; optargs = [ OFlags ("flags", cmd_flags, Some ["FUA"; "NO_HOLE"; "FAST_ZERO"]) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "send write zeroes command to the NBD server"; longdesc = "\ Issue a write zeroes command to the NBD server, which if supported by the server causes a zeroes to be written efficiently starting at C and ending at C + C - 1. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if L is false or L is true. Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum zero size, although a future extension may add a constraint visible in L. Also, some servers may permit a larger zero request only when the C is in use. The C parameter may be C<0> for no flags, or may contain C meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see L), C meaning that the server should favor writing actual allocated zeroes over punching a hole, and/or C meaning that the server must fail quickly if writing zeroes is no faster than a normal write (if that is supported - some servers cannot do this, see L)." ^ strict_call_description; see_also = [Link "can_fua"; Link "can_zero"; Link "is_read_only"; Link "can_fast_zero"; Link "aio_zero"; Link "set_strict_mode"]; }; "block_status", { default_call with args = [ UInt64 "count"; UInt64 "offset"; Closure extent_closure ]; optargs = [ OFlags ("flags", cmd_flags, Some ["REQ_ONE"]) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "send block status command, with 32-bit callback"; longdesc = "\ Issue the block status command to the NBD server. If supported by the server, this causes metadata context information about blocks beginning from the specified offset to be returned. The C parameter is a hint: the server may choose to return less status, or the final block may extend beyond the requested range. If multiple contexts are supported, the number of blocks and cumulative length of those blocks need not be identical between contexts. Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum block status size, although a future extension may add a constraint visible in L. Furthermore, this function is inherently limited to 32-bit values. If the server replies with a larger extent, the length of that extent will be truncated to just below 32 bits and any further extents from the server will be ignored. If the server replies with a status value larger than 32 bits (only possible when extended headers are in use), the callback function will be passed an C error. To get the full extent information from a server that supports 64-bit extents, you must use L. Depending on which metadata contexts were enabled before connecting (see L) and which are supported by the server (see L) this call returns information about extents by calling back to the C function. The callback cannot call C APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns C<-1>, and no earlier error has been detected, then the overall block status command will fail with any non-zero value stored into the callback's C parameter (with a default of C); but any further contexts will still invoke the callback. The C function is called once per type of metadata available, with the C passed to this function. The C parameter is a string such as C<\"base:allocation\">. The C array is an array of pairs of integers with the first entry in each pair being the length (in bytes) of the block and the second entry being a status/flags field which is specific to the metadata context. The number of pairs passed to the function is C. The NBD protocol document in the section about C describes the meaning of this array; for contexts known to libnbd, Blibnbd.hE> contains constants beginning with C that may help decipher the values. On entry to the callback, the C parameter contains the errno value of any previously detected error, but even if an earlier error was detected, the current C and C are valid. It is possible for the extent function to be called more times than you expect (if the server is buggy), so always check the C field to ensure you are receiving the data you expect. It is also possible that the extent function is not called at all, even for metadata contexts that you requested. This indicates either that the server doesn't support the context or for some other reason cannot return the data. The C parameter may be C<0> for no flags, or may contain C meaning that the server should return only one extent per metadata context where that extent does not exceed C bytes; however, libnbd does not validate that the server obeyed the flag." ^ strict_call_description; see_also = [Link "block_status_64"; Link "add_meta_context"; Link "can_meta_context"; Link "aio_block_status"; Link "set_strict_mode"]; }; "block_status_64", { default_call with args = [ UInt64 "count"; UInt64 "offset"; Closure extent64_closure ]; optargs = [ OFlags ("flags", cmd_flags, Some ["REQ_ONE"]) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "send block status command, with 64-bit callback"; longdesc = "\ Issue the block status command to the NBD server. If supported by the server, this causes metadata context information about blocks beginning from the specified offset to be returned. The C parameter is a hint: the server may choose to return less status, or the final block may extend beyond the requested range. When multiple contexts are supported, the number of blocks and cumulative length of those blocks need not be identical between contexts; this command generally returns the status of all negotiated contexts, while some servers also support a filtered request (see L, L). Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum block status size, although a future extension may add a constraint visible in L. Depending on which metadata contexts were enabled before connecting (see L) and which are supported by the server (see L) this call returns information about extents by calling back to the C function. The callback cannot call C APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns C<-1>, and no earlier error has been detected, then the overall block status command will fail with any non-zero value stored into the callback's C parameter (with a default of C); but any further contexts will still invoke the callback. The C function is called once per type of metadata available, with the C passed to this function. The C parameter is a string such as C<\"base:allocation\">. The C array is an array of B structs, containing length (in bytes) of the block and a status/flags field which is specific to the metadata context. The number of array entries passed to the function is C. The NBD protocol document in the section about C describes the meaning of this array; for contexts known to libnbd, Blibnbd.hE> contains constants beginning with C that may help decipher the values. On entry to the callback, the C parameter contains the errno value of any previously detected error. It is possible for the extent function to be called more times than you expect (if the server is buggy), so always check the C field to ensure you are receiving the data you expect. It is also possible that the extent function is not called at all, even for metadata contexts that you requested. This indicates either that the server doesn't support the context or for some other reason cannot return the data. The C parameter may be C<0> for no flags, or may contain C meaning that the server should return only one extent per metadata context where that extent does not exceed C bytes; however, libnbd does not validate that the server obeyed the flag." ^ strict_call_description; see_also = [Link "block_status"; Link "block_status_filter"; Link "add_meta_context"; Link "can_meta_context"; Link "aio_block_status_64"; Link "set_strict_mode"]; }; "block_status_filter", { default_call with args = [ UInt64 "count"; UInt64 "offset"; StringList "contexts"; Closure extent64_closure ]; optargs = [ OFlags ("flags", cmd_flags, Some ["REQ_ONE"; "PAYLOAD_LEN"]) ]; ret = RErr; permitted_states = [ Connected ]; modifies_fd = true; shortdesc = "send filtered block status command, with 64-bit callback"; longdesc = "\ Issue a filtered block status command to the NBD server. If supported by the server (see L), this causes metadata context information about blocks beginning from the specified offset to be returned, and with the result limited to just the contexts specified in C. Note that all strings in C must be supported by L. All other parameters to this function have the same semantics as in L; except that for convenience, unless was used to disable C, libnbd ignores the presence or absence of the flag C in C, while correctly using the flag over the wire." ^ strict_call_description; see_also = [Link "block_status_64"; Link "can_block_status_payload"; Link "can_meta_context"; Link "aio_block_status_filter"; Link "set_strict_mode"]; }; "poll", { default_call with args = [ Int "timeout" ]; ret = RInt; modifies_fd = true; shortdesc = "poll the handle once"; longdesc = "\ This is a simple implementation of L which is used internally by synchronous API calls. On success, it returns C<0> if the C (in milliseconds) occurs, or C<1> if the poll completed and the state machine progressed. Set C to C<-1> to block indefinitely (but be careful that eventual action is actually expected - for example, if the connection is established but there are no commands in flight, using an infinite timeout will permanently block). This function is mainly useful as an example of how you might integrate libnbd with your own main loop, rather than being intended as something you would use."; example = Some "examples/aio-connect-read.c"; see_also = [ Link "poll2" ]; }; "poll2", { default_call with args = [Fd "fd"; Int "timeout" ]; ret = RInt; modifies_fd = true; shortdesc = "poll the handle once, with fd"; longdesc = "\ This is the same as L, but an additional file descriptor parameter is passed. The additional fd is also polled (using C). One use for this is to wait for an L."; see_also = [ Link "poll" ]; }; "aio_connect", { default_call with args = [ SockAddrAndLen ("addr", "addrlen") ]; ret = RErr; permitted_states = [ Created ]; async_kind = Some (ChangesState ("aio_is_connecting", false)); shortdesc = "connect to the NBD server"; longdesc = "\ Begin connecting to the NBD server. The C and C parameters specify the address of the socket to connect to. " ^ async_connect_call_description; see_also = [ Link "set_opt_mode"; ]; }; "aio_connect_uri", { default_call with args = [ String "uri" ]; ret = RErr; permitted_states = [ Created ]; async_kind = Some (ChangesState ("aio_is_connecting", false)); shortdesc = "connect to an NBD URI"; longdesc = "\ Begin connecting to the NBD URI C. Parameters behave as documented in L. " ^ async_connect_call_description; see_also = [ Link "connect_uri"; Link "set_opt_mode"; URLLink "https://github.com/NetworkBlockDevice/nbd/blob/master/doc/uri.md"] }; "aio_connect_unix", { default_call with args = [ Path "unixsocket" ]; ret = RErr; permitted_states = [ Created ]; async_kind = Some (ChangesState ("aio_is_connecting", false)); shortdesc = "connect to the NBD server over a Unix domain socket"; longdesc = "\ Begin connecting to the NBD server over Unix domain socket (C). Parameters behave as documented in L. " ^ async_connect_call_description; example = Some "examples/aio-connect-read.c"; see_also = [ Link "connect_unix"; Link "set_opt_mode" ]; }; "aio_connect_vsock", { default_call with args = [ UInt32 "cid"; UInt32 "port" ]; ret = RErr; permitted_states = [ Created ]; async_kind = Some (ChangesState ("aio_is_connecting", false)); shortdesc = "connect to the NBD server over AF_VSOCK socket"; longdesc = "\ Begin connecting to the NBD server over the C protocol to the server C. Parameters behave as documented in L. " ^ async_connect_call_description; see_also = [ Link "connect_vsock"; Link "set_opt_mode" ]; }; "aio_connect_tcp", { default_call with args = [ String "hostname"; String "port" ]; ret = RErr; permitted_states = [ Created ]; async_kind = Some (ChangesState ("aio_is_connecting", false)); shortdesc = "connect to the NBD server over a TCP port"; longdesc = "\ Begin connecting to the NBD server listening on C. Parameters behave as documented in L. " ^ async_connect_call_description; see_also = [ Link "connect_tcp"; Link "set_opt_mode" ]; }; "aio_connect_socket", { default_call with args = [ Fd "sock" ]; ret = RErr; permitted_states = [ Created ]; async_kind = Some (ChangesState ("aio_is_connecting", false)); shortdesc = "connect directly to a connected socket"; longdesc = "\ Begin connecting to the connected socket C. Parameters behave as documented in L. " ^ async_connect_call_description; see_also = [ Link "connect_socket"; Link "set_opt_mode" ]; }; "aio_connect_command", { default_call with args = [ StringList "argv" ]; ret = RErr; permitted_states = [ Created ]; async_kind = Some (ChangesState ("aio_is_connecting", false)); shortdesc = "connect to the NBD server"; longdesc = "\ Run the command as a subprocess and begin connecting to it over stdin/stdout. Parameters behave as documented in L. " ^ async_connect_call_description; see_also = [ Link "connect_command"; Link "set_opt_mode" ]; }; "aio_connect_systemd_socket_activation", { default_call with args = [ StringList "argv" ]; ret = RErr; permitted_states = [ Created ]; async_kind = Some (ChangesState ("aio_is_connecting", false)); shortdesc = "connect using systemd socket activation"; longdesc = "\ Run the command as a subprocess and begin connecting to it using systemd socket activation. Parameters behave as documented in L. " ^ async_connect_call_description; see_also = [ Link "connect_systemd_socket_activation"; Link "set_opt_mode" ]; }; "aio_opt_go", { default_call with args = []; optargs = [ OClosure completion_closure ]; ret = RErr; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "end negotiation and move on to using an export"; longdesc = "\ Request that the server finish negotiation and move on to serving the export previously specified by the most recent L or L. This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that directly detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback; however it is also possible to indirectly detect an error when L returns true."; see_also = [Link "set_opt_mode"; Link "opt_go"]; }; "aio_opt_abort", { default_call with args = []; ret = RErr; permitted_states = [ Negotiating ]; async_kind = Some (ChangesState ("aio_is_connecting", false)); shortdesc = "end negotiation and close the connection"; longdesc = "\ Request that the server finish negotiation, gracefully if possible, then close the connection. This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false."; see_also = [Link "set_opt_mode"; Link "opt_abort"]; }; "aio_opt_starttls", { default_call with args = []; optargs = [ OClosure completion_closure ]; ret = RErr; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "request the server to initiate TLS"; longdesc = "\ Request that the server initiate a secure TLS connection, by sending C. This behaves like the synchronous counterpart L, except that it does not wait for the server's response. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback."; see_also = [Link "set_opt_mode"; Link "opt_starttls"]; }; "aio_opt_extended_headers", { default_call with args = []; optargs = [ OClosure completion_closure ]; ret = RErr; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "request the server to enable extended headers"; longdesc = "\ Request that the server use extended headers, by sending C. This behaves like the synchronous counterpart L, except that it does not wait for the server's response. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback."; see_also = [Link "set_opt_mode"; Link "opt_extended_headers"]; }; "aio_opt_structured_reply", { default_call with args = []; optargs = [ OClosure completion_closure ]; ret = RErr; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "request the server to enable structured replies"; longdesc = "\ Request that the server use structured replies, by sending C. This behaves like the synchronous counterpart L, except that it does not wait for the server's response. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback."; see_also = [Link "set_opt_mode"; Link "opt_structured_reply"]; }; "aio_opt_list", { default_call with args = [ Closure list_closure ]; optargs = [ OClosure completion_closure ]; ret = RErr; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "request the server to list all exports during negotiation"; longdesc = "\ Request that the server list all exports that it supports. This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback."; see_also = [Link "set_opt_mode"; Link "opt_list"]; }; "aio_opt_info", { default_call with args = []; optargs = [ OClosure completion_closure ]; ret = RErr; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "request the server for information about an export"; longdesc = "\ Request that the server supply information about the export name previously specified by the most recent L or L. This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback."; see_also = [Link "set_opt_mode"; Link "opt_info"; Link "is_read_only"]; }; "aio_opt_list_meta_context", { default_call with args = [ Closure context_closure ]; ret = RInt; optargs = [ OClosure completion_closure ]; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "request list of available meta contexts, using implicit query"; longdesc = "\ Request that the server list available meta contexts associated with the export previously specified by the most recent L or L, and with a list of queries from prior calls to L (see L if you want to supply an explicit query list instead). This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback."; see_also = [Link "set_opt_mode"; Link "opt_list_meta_context"; Link "aio_opt_list_meta_context_queries"]; }; "aio_opt_list_meta_context_queries", { default_call with args = [ StringList "queries"; Closure context_closure ]; ret = RInt; optargs = [ OClosure completion_closure ]; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "request list of available meta contexts, using explicit query"; longdesc = "\ Request that the server list available meta contexts associated with the export previously specified by the most recent L or L, and with an explicit list of queries provided as a parameter (see L if you want to reuse an implicit query list instead). This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback."; see_also = [Link "set_opt_mode"; Link "opt_list_meta_context_queries"; Link "aio_opt_list_meta_context"]; }; "aio_opt_set_meta_context", { default_call with args = [ Closure context_closure ]; ret = RInt; optargs = [ OClosure completion_closure ]; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "select specific meta contexts, with implicit query list"; longdesc = "\ Request that the server supply all recognized meta contexts registered through prior calls to L, in conjunction with the export previously specified by the most recent L or L. This can only be used if L enabled option mode. Normally, this function is redundant, as L automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with L to bypass the automatic context request normally performed by L. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback."; see_also = [Link "set_opt_mode"; Link "opt_set_meta_context"; Link "aio_opt_set_meta_context_queries"]; }; "aio_opt_set_meta_context_queries", { default_call with args = [ StringList "queries"; Closure context_closure ]; ret = RInt; optargs = [ OClosure completion_closure ]; permitted_states = [ Negotiating ]; async_kind = Some WithCompletionCallback; shortdesc = "select specific meta contexts, with explicit query list"; longdesc = "\ Request that the server supply all recognized meta contexts passed in through C, in conjunction with the export previously specified by the most recent L or L. This can only be used if L enabled option mode. Normally, this function is redundant, as L automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with L to bypass the automatic context request normally performed by L. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback."; see_also = [Link "set_opt_mode"; Link "opt_set_meta_context_queries"; Link "aio_opt_set_meta_context"]; }; "aio_pread", { default_call with args = [ BytesPersistOut ("buf", "count"); UInt64 "offset" ]; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some []) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "read from the NBD server"; longdesc = "\ Issue a read command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Note that you must ensure C is valid until the command has completed. Furthermore, if the C parameter to C is set or if L reports failure, and if L returns true, then libnbd sanitized C, but it is unspecified whether the contents of C will read as zero or as partial results from the server. If L returns false, then libnbd did not sanitize C, and the contents are undefined on failure. Other parameters behave as documented in L." ^ strict_call_description; example = Some "examples/aio-connect-read.c"; see_also = [SectionLink "Issuing asynchronous commands"; Link "aio_pread_structured"; Link "pread"; Link "set_strict_mode"; Link "set_pread_initialize"]; }; "aio_pread_structured", { default_call with args = [ BytesPersistOut ("buf", "count"); UInt64 "offset"; Closure chunk_closure ]; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some ["DF"]) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "read from the NBD server"; longdesc = "\ Issue a read command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Note that you must ensure C is valid until the command has completed. Furthermore, if the C parameter to C is set or if L reports failure, and if L returns true, then libnbd sanitized C, but it is unspecified whether the contents of C will read as zero or as partial results from the server. If L returns false, then libnbd did not sanitize C, and the contents are undefined on failure. Other parameters behave as documented in L." ^ strict_call_description; see_also = [SectionLink "Issuing asynchronous commands"; Link "aio_pread"; Link "pread_structured"; Link "set_strict_mode"; Link "set_pread_initialize"]; }; "aio_pwrite", { default_call with args = [ BytesPersistIn ("buf", "count"); UInt64 "offset" ]; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some ["FUA"; "PAYLOAD_LEN"]) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "write to the NBD server"; longdesc = "\ Issue a write command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Note that you must ensure C is valid until the command has completed. Other parameters behave as documented in L." ^ strict_call_description; see_also = [SectionLink "Issuing asynchronous commands"; Link "is_read_only"; Link "pwrite"; Link "set_strict_mode"]; }; "aio_disconnect", { default_call with args = []; optargs = [ OFlags ("flags", cmd_flags, Some []) ]; ret = RErr; permitted_states = [ Connected ]; async_kind = Some (ChangesState ("aio_is_closed", true)); shortdesc = "disconnect from the NBD server"; longdesc = "\ Issue the disconnect command to the NBD server. This is not a normal command because NBD servers are not obliged to send a reply. Instead you should wait for L to become true on the connection. Once this command is issued, you cannot issue any further commands. Although libnbd does not prevent you from issuing this command while still waiting on the replies to previous commands, the NBD protocol recommends that you wait until there are no other commands in flight (see L), to give the server a better chance at a clean shutdown. The C parameter must be C<0> for now (it exists for future NBD protocol extensions). There is no direct synchronous counterpart; however, L will call this function if appropriate."; see_also = [Link "aio_in_flight"]; }; "aio_flush", { default_call with args = []; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some []) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "send flush command to the NBD server"; longdesc = "\ Issue the flush command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L." ^ strict_call_description; see_also = [SectionLink "Issuing asynchronous commands"; Link "can_flush"; Link "flush"; Link "set_strict_mode"]; }; "aio_trim", { default_call with args = [ UInt64 "count"; UInt64 "offset" ]; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some ["FUA"]) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "send trim command to the NBD server"; longdesc = "\ Issue a trim command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L." ^ strict_call_description; see_also = [SectionLink "Issuing asynchronous commands"; Link "can_trim"; Link "trim"; Link "set_strict_mode"]; }; "aio_cache", { default_call with args = [ UInt64 "count"; UInt64 "offset" ]; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some []) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "send cache (prefetch) command to the NBD server"; longdesc = "\ Issue the cache (prefetch) command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L." ^ strict_call_description; see_also = [SectionLink "Issuing asynchronous commands"; Link "can_cache"; Link "cache"; Link "set_strict_mode"]; }; "aio_zero", { default_call with args = [ UInt64 "count"; UInt64 "offset" ]; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some ["FUA"; "NO_HOLE"; "FAST_ZERO"]) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "send write zeroes command to the NBD server"; longdesc = "\ Issue a write zeroes command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L." ^ strict_call_description; see_also = [SectionLink "Issuing asynchronous commands"; Link "can_zero"; Link "can_fast_zero"; Link "zero"; Link "set_strict_mode"]; }; "aio_block_status", { default_call with args = [ UInt64 "count"; UInt64 "offset"; Closure extent_closure ]; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some ["REQ_ONE"]) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "send block status command, with 32-bit callback"; longdesc = "\ Send the block status command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L. This function is inherently limited to 32-bit values. If the server replies with a larger extent, the length of that extent will be truncated to just below 32 bits and any further extents from the server will be ignored. If the server replies with a status value larger than 32 bits (only possible when extended headers are in use), the callback function will be passed an C error. To get the full extent information from a server that supports 64-bit extents, you must use L. " ^ strict_call_description; see_also = [SectionLink "Issuing asynchronous commands"; Link "aio_block_status_64"; Link "can_meta_context"; Link "block_status"; Link "set_strict_mode"]; }; "aio_block_status_64", { default_call with args = [ UInt64 "count"; UInt64 "offset"; Closure extent64_closure ]; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some ["REQ_ONE"]) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "send block status command, with 64-bit callback"; longdesc = "\ Send the block status command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L." ^ strict_call_description; see_also = [SectionLink "Issuing asynchronous commands"; Link "aio_block_status"; Link "can_meta_context"; Link "block_status_64"; Link "set_strict_mode"]; }; "aio_block_status_filter", { default_call with args = [ UInt64 "count"; UInt64 "offset"; StringList "contexts"; Closure extent64_closure ]; optargs = [ OClosure completion_closure; OFlags ("flags", cmd_flags, Some ["REQ_ONE"; "PAYLOAD_LEN"]) ]; ret = RCookie; permitted_states = [ Connected ]; async_kind = Some WithCompletionCallback; shortdesc = "send filtered block status command to the NBD server"; longdesc = "\ Send a filtered block status command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L." ^ strict_call_description; see_also = [SectionLink "Issuing asynchronous commands"; Link "aio_block_status_64"; Link "block_status_filter"; Link "can_meta_context"; Link "can_block_status_payload"; Link "set_strict_mode"]; }; "aio_get_fd", { default_call with args = []; ret = RFd; shortdesc = "return file descriptor associated with this connection"; longdesc = "\ Return the underlying file descriptor associated with this connection. You can use this to check if the file descriptor is ready for reading or writing and call L or L. See also L. Do not do anything else with the file descriptor."; see_also = [Link "aio_get_direction"]; }; "aio_get_direction", { default_call with args = []; ret = RUInt; is_locked = false; may_set_error = false; shortdesc = "return the read or write direction"; longdesc = "\ Return the current direction of this connection, which means whether we are next expecting to read data from the server, write data to the server, or both. It returns =over 4 =item 0 We are not expected to interact with the server file descriptor from the current state. It is not worth attempting to use L; if the connection is not dead, then state machine progress must instead come from some other means such as L. =item C = 1 We are expected next to read from the server. If using L you would set C. If C returns C or C you would then call L. Note that once libnbd reaches L, this direction is returned even when there are no commands in flight (see L). In a single-threaded use of libnbd, it is not worth polling until after issuing a command, as otherwise the server will never wake up the poll. In a multi-threaded scenario, you can have one thread begin a polling loop prior to any commands, but any other thread that issues a command will need a way to kick the polling thread out of poll in case issuing the command changes the needed polling direction. Possible ways to do this include polling for activity on a pipe-to-self, or using L to send a signal that is masked except during L. =item C = 2 We are expected next to write to the server. If using L you would set C. If C returns C you would then call L. =item C = 3 We are expected next to either read or write to the server. If using L you would set C. If only one of C or C is returned, then see above. However, if both are returned, it is better to call only L, as processing the server's reply may change the state of the connection and invalidate the need to write more commands. =back"; see_also = [Link "aio_in_flight"]; }; "aio_notify_read", { default_call with args = []; ret = RErr; modifies_fd = true; shortdesc = "notify that the connection is readable"; longdesc = "\ Send notification to the state machine that the connection is readable. Typically this is called after your main loop has detected that the file descriptor associated with this connection is readable."; }; "aio_notify_write", { default_call with args = []; ret = RErr; modifies_fd = true; shortdesc = "notify that the connection is writable"; longdesc = "\ Send notification to the state machine that the connection is writable. Typically this is called after your main loop has detected that the file descriptor associated with this connection is writable."; }; "aio_is_created", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "check if the connection has just been created"; longdesc = "\ Return true if this connection has just been created. This is the state before the handle has started connecting to a server. In this state the handle can start to be connected by calling functions such as L."; }; "aio_is_connecting", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "check if the connection is connecting or handshaking"; longdesc = "\ Return true if this connection is connecting to the server or in the process of handshaking and negotiating options which happens before the handle becomes ready to issue commands (see L)."; see_also = [Link "aio_is_ready"]; }; "aio_is_negotiating", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "check if connection is ready to send handshake option"; longdesc = "\ Return true if this connection is ready to start another option negotiation command while handshaking with the server. An option command will move back to the connecting state (see L). Note that this state cannot be reached unless requested by L, and even then it only works with newstyle servers; an oldstyle server will skip straight to L."; see_also = [Link "aio_is_connecting"; Link "aio_is_ready"; Link "set_opt_mode"]; }; "aio_is_ready", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "check if the connection is in the ready state"; longdesc = "\ Return true if this connection is connected to the NBD server, the handshake has completed, and the connection is idle or waiting for a reply. In this state the handle is ready to issue commands."; }; "aio_is_processing", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "check if the connection is processing a command"; longdesc = "\ Return true if this connection is connected to the NBD server, the handshake has completed, and the connection is processing commands (either writing out a request or reading a reply). Note the ready state (L) is not included. In the ready state commands may be I (the I is processing them), but libnbd is not processing them."; }; "aio_is_dead", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "check if the connection is dead"; longdesc = "\ Return true if the connection has encountered a fatal error and is dead. In this state the handle may only be closed. There is no way to recover a handle from the dead state."; }; "aio_is_closed", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "check if the connection is closed"; longdesc = "\ Return true if the connection has closed. There is no way to reconnect a closed connection. Instead you must close the whole handle."; }; "aio_command_completed", { default_call with args = [UInt64 "cookie"]; ret = RBool; shortdesc = "check if the command completed"; longdesc = "\ Return true if the command completed. If this function returns true then the command was successful and it has been retired. Return false if the command is still in flight. This can also fail with an error in case the command failed (in this case the command is also retired). A command is retired either via this command, or by using a completion callback which returns C<1>. The C parameter is the positive unique 64 bit cookie for the command, as returned by a call such as L."; }; "aio_peek_command_completed", { default_call with args = []; ret = RInt64; shortdesc = "check if any command has completed"; longdesc = "\ Return the unique positive 64 bit cookie of the first non-retired but completed command, C<0> if there are in-flight commands but none of them are awaiting retirement, or C<-1> on error including when there are no in-flight commands. Any cookie returned by this function must still be passed to L to actually retire the command and learn whether the command was successful."; }; "aio_in_flight", { default_call with args = []; ret = RInt; permitted_states = [ Connected; Closed; Dead ]; (* XXX is_locked = false ? *) shortdesc = "check how many aio commands are still in flight"; longdesc = "\ Return the number of in-flight aio commands that are still awaiting a response from the server before they can be retired. If this returns a non-zero value when requesting a disconnect from the server (see L and L), libnbd does not try to wait for those commands to complete gracefully; if the server strands commands while shutting down, L will report those commands as failed with a status of C."; example = Some "examples/aio-connect-read.c"; see_also = [Link "aio_disconnect"]; }; "connection_state", { default_call with args = []; ret = RStaticString; shortdesc = "return string describing the state of the connection"; longdesc = "\ Returns a descriptive string for the state of the connection. This can be used for debugging or troubleshooting, but you should not rely on the state of connections since it may change in future versions."; }; "get_package_name", { default_call with args = []; ret = RStaticString; is_locked = false; may_set_error = false; shortdesc = "return the name of the library"; longdesc = "\ Returns the name of the library, always C<\"libnbd\"> unless the library was modified with another name at compile time."; see_also = [Link "get_version"]; }; "get_version", { default_call with args = []; ret = RStaticString; is_locked = false; may_set_error = false; shortdesc = "return the version of the library"; longdesc = "\ Return the version of libnbd. This is returned as a string in the form C<\"major.minor.release\"> where each of major, minor and release is a small positive integer. For example: minor ↓ \"1.0.3\" ↑ ↑ major release =over 4 =item major = 0 The major number was C<0> for the early experimental versions of libnbd where we still had an unstable API. =item major = 1 The major number is C<1> for the versions of libnbd with a long-term stable API and ABI. It is not anticipated that major will be any number other than C<1>. =item minor = 0, 2, ... (even) The minor number is even for stable releases. =item minor = 1, 3, ... (odd) The minor number is odd for development versions. Note that new APIs added in a development version remain experimental and subject to change in that branch until they appear in a stable release. =item release The release number is incremented for each release along a particular branch. =back"; see_also = [Link "get_package_name"]; }; "kill_subprocess", { default_call with args = [ Int "signum" ]; ret = RErr; shortdesc = "kill server running as a subprocess"; longdesc = "\ This call may be used to kill the server running as a subprocess that was previously created using L. You do not need to use this call. It is only needed if the server does not exit when the socket is closed. The C parameter is the optional signal number to send (see L). If C is C<0> then C is sent."; see_also = [ExternalLink ("signal", 7); Link "connect_command"]; }; "supports_tls", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "true if libnbd was compiled with support for TLS"; longdesc = "\ Returns true if libnbd was compiled with gnutls which is required to support TLS encryption, or false if not."; see_also = [Link "set_tls"]; }; "supports_vsock", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "true if libnbd was compiled with support for AF_VSOCK"; longdesc = "\ Returns true if libnbd was compiled with support for the C family of sockets, or false if not. Note that on the Linux operating system, this returns true if there is compile-time support, but you may still need runtime support for some aspects of AF_VSOCK usage; for example, use of C as the server name requires that the I kernel module is loaded."; see_also = [Link "connect_vsock"; Link "connect_uri"]; }; "supports_uri", { default_call with args = []; ret = RBool; is_locked = false; may_set_error = false; shortdesc = "true if libnbd was compiled with support for NBD URIs"; longdesc = "\ Returns true if libnbd was compiled with libxml2 which is required to support NBD URIs, or false if not."; see_also = [Link "connect_uri"; Link "aio_connect_uri"; Link "get_uri"]; }; "get_uri", { default_call with args = []; ret = RString; permitted_states = [ Connecting; Negotiating; Connected; Closed; Dead ]; shortdesc = "construct an NBD URI for a connection"; longdesc = "\ This makes a best effort attempt to construct an NBD URI which could be used to connect back to the same server (using L). In some cases there is not enough information in the handle to successfully create a URI (eg. if you connected with L). In such cases the call returns C and further diagnostic information is available via L and L as usual. Even if a URI is returned it is not guaranteed to work, and it may not be optimal. L I<--uri> option is a way to access this API from shell scripts."; see_also = [Link "connect_uri"; Link "aio_connect_uri"; Link "supports_uri"]; }; ] (* The first stable version that the symbol appeared in, for * example (1, 2) if the symbol was added in development cycle * 1.1.x and thus the first stable version was 1.2. *) let first_version = [ "set_debug", (1, 0); "get_debug", (1, 0); "set_debug_callback", (1, 0); "clear_debug_callback", (1, 0); "set_handle_name", (1, 0); "get_handle_name", (1, 0); "set_export_name", (1, 0); "get_export_name", (1, 0); "set_tls", (1, 0); "get_tls", (1, 0); "set_tls_certificates", (1, 0); "set_tls_verify_peer", (1, 0); "get_tls_verify_peer", (1, 0); "set_tls_username", (1, 0); "get_tls_username", (1, 0); "set_tls_psk_file", (1, 0); "add_meta_context", (1, 0); "connect_uri", (1, 0); "connect_unix", (1, 0); "connect_tcp", (1, 0); "connect_command", (1, 0); "is_read_only", (1, 0); "can_flush", (1, 0); "can_fua", (1, 0); "is_rotational", (1, 0); "can_trim", (1, 0); "can_zero", (1, 0); "can_df", (1, 0); "can_multi_conn", (1, 0); "can_cache", (1, 0); "can_meta_context", (1, 0); "get_size", (1, 0); "pread", (1, 0); "pread_structured", (1, 0); "pwrite", (1, 0); "shutdown", (1, 0); "flush", (1, 0); "trim", (1, 0); "cache", (1, 0); "zero", (1, 0); "block_status", (1, 0); "poll", (1, 0); "aio_connect", (1, 0); "aio_connect_uri", (1, 0); "aio_connect_unix", (1, 0); "aio_connect_tcp", (1, 0); "aio_connect_command", (1, 0); "aio_pread", (1, 0); "aio_pread_structured", (1, 0); "aio_pwrite", (1, 0); "aio_disconnect", (1, 0); "aio_flush", (1, 0); "aio_trim", (1, 0); "aio_cache", (1, 0); "aio_zero", (1, 0); "aio_block_status", (1, 0); "aio_get_fd", (1, 0); "aio_get_direction", (1, 0); "aio_notify_read", (1, 0); "aio_notify_write", (1, 0); "aio_is_created", (1, 0); "aio_is_connecting", (1, 0); "aio_is_ready", (1, 0); "aio_is_processing", (1, 0); "aio_is_dead", (1, 0); "aio_is_closed", (1, 0); "aio_command_completed", (1, 0); "aio_peek_command_completed", (1, 0); "aio_in_flight", (1, 0); "connection_state", (1, 0); "get_package_name", (1, 0); "get_version", (1, 0); "kill_subprocess", (1, 0); "supports_tls", (1, 0); "supports_uri", (1, 0); (* Added in 1.1.x development cycle, will be stable and supported in 1.2. *) "can_fast_zero", (1, 2); "set_request_structured_replies", (1, 2); "get_request_structured_replies", (1, 2); "get_structured_replies_negotiated", (1, 2); "get_tls_negotiated", (1, 2); "get_protocol", (1, 2); "set_handshake_flags", (1, 2); "get_handshake_flags", (1, 2); "connect_systemd_socket_activation", (1, 2); "aio_connect_systemd_socket_activation", (1, 2); "connect_socket", (1, 2); "aio_connect_socket", (1, 2); "connect_vsock", (1, 2); "aio_connect_vsock", (1, 2); "set_uri_allow_transports", (1, 2); "set_uri_allow_tls", (1, 2); "set_uri_allow_local_file", (1, 2); (* Added in 1.3.x development cycle, will be stable and supported in 1.4. *) "get_block_size", (1, 4); "set_full_info", (1, 4); "get_full_info", (1, 4); "get_canonical_export_name", (1, 4); "get_export_description", (1, 4); "set_opt_mode", (1, 4); "get_opt_mode", (1, 4); "aio_is_negotiating", (1, 4); "opt_go", (1, 4); "opt_abort", (1, 4); "opt_list", (1, 4); "opt_info", (1, 4); "aio_opt_go", (1, 4); "aio_opt_abort", (1, 4); "aio_opt_list", (1, 4); "aio_opt_info", (1, 4); (* Added in 1.5.x development cycle, will be stable and supported in 1.6. *) "set_strict_mode", (1, 6); "get_strict_mode", (1, 6); "get_nr_meta_contexts", (1, 6); "get_meta_context", (1, 6); "clear_meta_contexts", (1, 6); "opt_list_meta_context", (1, 6); "aio_opt_list_meta_context", (1, 6); (* Added in 1.7.x development cycle, will be stable and supported in 1.8. *) "set_private_data", (1, 8); "get_private_data", (1, 8); "get_uri", (1, 8); (* Added in 1.11.x development cycle, will be stable and supported in 1.12. *) "set_pread_initialize", (1, 12); "get_pread_initialize", (1, 12); "set_request_block_size", (1, 12); "get_request_block_size", (1, 12); (* Added in 1.15.x development cycle, will be stable and supported in 1.16. *) "poll2", (1, 16); "supports_vsock", (1, 16); "stats_bytes_sent", (1, 16); "stats_chunks_sent", (1, 16); "stats_bytes_received", (1, 16); "stats_chunks_received", (1, 16); "opt_list_meta_context_queries", (1, 16); "aio_opt_list_meta_context_queries", (1, 16); "set_request_meta_context", (1, 16); "get_request_meta_context", (1, 16); "opt_set_meta_context", (1, 16); "opt_set_meta_context_queries", (1, 16); "aio_opt_set_meta_context", (1, 16); "aio_opt_set_meta_context_queries", (1, 16); "opt_structured_reply", (1, 16); "aio_opt_structured_reply", (1, 16); "opt_starttls", (1, 16); "aio_opt_starttls", (1, 16); "set_socket_activation_name", (1, 16); "get_socket_activation_name", (1, 16); (* Added in 1.17.x development cycle, will be stable and supported in 1.18. *) "block_status_64", (1, 18); "aio_block_status_64", (1, 18); "set_request_extended_headers", (1, 18); "get_request_extended_headers", (1, 18); "get_extended_headers_negotiated", (1, 18); "opt_extended_headers", (1, 18); "aio_opt_extended_headers", (1, 18); "can_block_status_payload", (1, 18); "block_status_filter", (1, 18); "aio_block_status_filter", (1, 18); (* These calls are proposed for a future version of libnbd, but * have not been added to any released version so far. "get_tls_certificates", (1, ??); "get_tls_psk_file", (1, ??); *) ] (* Constants, etc. See also Enums and Flags above. *) let constants = [ "AIO_DIRECTION_READ", 1; "AIO_DIRECTION_WRITE", 2; "AIO_DIRECTION_BOTH", 3; "READ_DATA", 1; "READ_HOLE", 2; "READ_ERROR", 3; ] let metadata_namespaces = [ "base", [ "allocation", [ "STATE_HOLE", 1 lsl 0; "STATE_ZERO", 1 lsl 1; ] ]; "qemu", [ "dirty-bitmap:", [ "STATE_DIRTY", 1 lsl 0; ]; "allocation-depth", []; ]; ] let pod_of_link = function | Link page -> sprintf "L" page | SectionLink anchor -> sprintf "L" anchor | MainPageLink -> "L" | ExternalLink (page, section) -> sprintf "L<%s(%d)>" page section | URLLink url -> sprintf "L<%s>" url let verify_link = let pages = List.map fst handle_calls in function | Link "create" | Link "close" | Link "get_error" | Link "get_errno" -> () | Link page -> if not (List.mem page pages) then failwithf "verify_link: page nbd_%s does not exist" page | SectionLink _ -> (* XXX Could search libnbd(3) for headings. *) () | MainPageLink -> () | ExternalLink (page, section) -> () | URLLink url -> (* XXX Could check URL is well formed. *) () let sort_uniq_links links = let score = function | Link page -> 0, page | SectionLink anchor -> 1, anchor | MainPageLink -> 2, "" | ExternalLink (page, section) -> 3, sprintf "%s(%d)" page section | URLLink url -> 4, url in let cmp link1 link2 = compare (score link1) (score link2) in List.sort_uniq cmp links let extract_links = let link_rex = Str.regexp "L<\\([a-z0-9_]+\\)(\\([0-9]\\))>" in fun pod -> let rec loop acc i = let i = try Some (Str.search_forward link_rex pod i) with Not_found -> None in match i with | None -> acc | Some i -> let page = Str.matched_group 1 pod in let section = int_of_string (Str.matched_group 2 pod) in let link = if is_prefix page "nbd_" then ( let n = String.length page in Link (String.sub page 4 (n-4)) ) else if page = "libnbd" && section = 3 then MainPageLink else ExternalLink (page, section) in let acc = link :: acc in loop acc (i+1) in loop [] 0 (* Check the API definition. *) let () = (* Check functions using may_set_error. *) List.iter ( function (* !may_set_error is incompatible with permitted_states != [] * because an incorrect state will result in set_error being * called by the generated wrapper. *) | name, { permitted_states = (_::_); may_set_error = false } -> failwithf "%s: if may_set_error is false, permitted_states must be empty (any permitted state)" name (* may_set_error = true is incompatible with RUInt*, REnum, and RFlags * because these calls cannot return an error indication. *) | name, { ret = RUInt; may_set_error = true } | name, { ret = RUIntPtr; may_set_error = true } | name, { ret = RUInt64; may_set_error = true } | name, { ret = REnum _; may_set_error = true } | name, { ret = RFlags _; may_set_error = true } -> failwithf "%s: if ret is RUInt/REnum/RFlags, may_set_error must be false" name (* !may_set_error is incompatible with certain parameters because * we have to do a NULL-check on those which may return an error. * Refer to generator/C.ml:generator_lib_api_c. *) | name, { args; may_set_error = false } when List.exists (function | Closure _ | Enum _ | Flags _ | BytesIn _ | BytesOut _ | BytesPersistIn _ | BytesPersistOut _ | SockAddrAndLen _ | Path _ | String _ | StringList _-> true | _ -> false) args -> failwithf "%s: if args contains any non-null pointer parameter, may_set_error must be false" name (* !may_set_error is incompatible with certain optargs too. *) | name, { optargs; may_set_error = false } when List.exists (function | OFlags _ -> true | _ -> false) optargs -> failwithf "%s: if optargs contains an OFlags parameter, may_set_error must be false" name | _ -> () ) handle_calls; (* first_version must be (0, 0) in handle_calls (we will modify it). *) List.iter ( function | (_, { first_version = (0, 0) }) -> () | (name, _) -> failwithf "%s: first_version field must not be set in handle_calls table" name ) handle_calls; (* Check every entry in first_version corresponds 1-1 with handle_calls. *) let () = let fv_names = List.sort compare (List.map fst first_version) in let hc_names = List.sort compare (List.map fst handle_calls) in if fv_names <> hc_names then ( eprintf "first_version names:\n"; List.iter (eprintf "\t%s\n") fv_names; eprintf "handle_calls names:\n"; List.iter (eprintf "\t%s\n") hc_names; failwithf "first_version and handle_calls are not a 1-1 mapping. You probably forgot to add a new API to the first_version table." ) in (* Check and update first_version field in handle_calls. *) List.iter ( function | (name, entry) -> let major, minor = List.assoc name first_version in (* First stable version must be 1.x where x is even. *) if major <> 1 then failwithf "%s: first_version must be 1.x" name; if minor mod 2 <> 0 then failwithf "%s: first_version must refer to a stable release" name; entry.first_version <- (major, minor) ) handle_calls; (* Because of the way we use completion free callbacks to * free persistent buffers in non-C languages, any function * with a BytesPersistIn/Out parameter must have only one. * And it must have an OClosure completion optarg. *) List.iter ( fun (name, { args; optargs }) -> let is_persistent_buffer_arg = function | BytesPersistIn _ | BytesPersistOut _ -> true | _ -> false and is_oclosure_completion = function | OClosure { cbname = "completion" } -> true | _ -> false in if List.exists is_persistent_buffer_arg args then ( let bpargs = List.filter is_persistent_buffer_arg args in if List.length bpargs >= 2 then failwithf "%s: multiple BytesPersistIn/Out params not supported" name; if not (List.exists is_oclosure_completion optargs) then failwithf "%s: functions with BytesPersistIn/Out arg must have completion callback" name ) ) handle_calls libnbd-1.20.3/generator/state_machine_generator.mli0000644000175000017500000000177514525371754016102 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generate the code for the state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) val generate_lib_states_h : unit -> unit val generate_lib_states_c : unit -> unit val generate_lib_states_run_c : unit -> unit libnbd-1.20.3/generator/state_machine_generator.ml0000644000175000017500000004525114525371754015726 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generate the code for the state machine * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open State_machine open Utils let c_string_of_external_event = function | NotifyRead -> "notify_read" | NotifyWrite -> "notify_write" | CmdCreate -> "cmd_create" | CmdConnectSockAddr -> "cmd_connect_sockaddr" | CmdConnectTCP -> "cmd_connect_tcp" | CmdConnectCommand -> "cmd_connect_command" | CmdConnectSA -> "cmd_connect_sa" | CmdConnectSocket -> "cmd_connect_socket" | CmdIssue -> "cmd_issue" (* Find a state in the state machine hierarchy by path. The [path] * parameter is a list like [["READY"]] or [["MAGIC"; "START"]]. *) let find_state path = let rec find sm = function | [] -> raise Not_found | [n] -> (* Find a state leaf node. *) let rec loop = function | [] -> raise Not_found | State ({ name } as ret) :: _ when n = name -> ret | _ :: rest -> loop rest in loop sm | g :: path -> (* Find a state machine group. *) let rec loop = function | [] -> raise Not_found | Group (name, group) :: _ when g = name -> find group path | _ :: rest -> loop rest in loop sm in try (find state_machine path : state) with Not_found -> failwithf "find_state: ‘%s’ not found" (String.concat "." path) let dot_rex = Str.regexp "\\." (* Resolve a stringified path to a state. * * [prefix] parameter is the current prefix. We resolve paths * relative to this. * * Stringified paths can be: * ["STATE"] => state relative to current level * ["GROUP.STATE"] => state below group at current level (to any depth) * [".TOP"] => state at the top level * ["^UP"] => state at a level above this one *) let rec resolve_state prefix str = let len = String.length str in if len >= 1 && String.sub str 0 1 = "." then resolve_state [] (String.sub str 1 (len-1)) else if len >= 1 && String.sub str 0 1 = "^" then ( let parent = match List.rev prefix with | [] -> failwithf "resolve_state: %s (^) used from top level group" str | _ :: rest -> List.rev rest in resolve_state parent (String.sub str 1 (len-1)) ) else ( let path = Str.split_delim dot_rex str in find_state (prefix @ path) ) (* Flatten the state machine hierarchy. This sets the [parsed.prefix], * [parsed.state_enum], [parsed.events] fields in the state. *) let states : state list = let rec flatten prefix = function | [] -> [] | State st :: rest -> st.parsed <- { st.parsed with prefix = prefix; display_name = ( match prefix with | [] -> st.name | prefix -> String.concat "." prefix ^ "." ^ st.name ); state_enum = ( let path = String.concat "" (List.map ((^) "_") prefix) in "STATE" ^ path ^ "_" ^ st.name ); events = ( List.map ( fun (ev, str) -> (* In external_events, * special string [""] means current state. *) if str = "" then ev, st else ev, resolve_state prefix str ) st.external_events ) }; st :: flatten prefix rest | Group (name, group) :: rest -> let states = flatten (prefix @ [name]) group in states @ flatten prefix rest in flatten [] state_machine (* Read and parse the state machine C code. *) let state_machine_prologue = let parse_states_file filename = let chan = open_in filename in let lines = ref [] in let lineno = ref 1 in (try while true do let line = input_line chan in let loc : location = filename, !lineno in incr lineno; lines := (loc, line) :: !lines done with End_of_file -> ()); close_in chan; (* Note this list is initially in reverse order. *) let lines = !lines in (* The last line in the file must have a particular form, check * and remove. *) if List.length lines = 0 || snd (List.hd lines) <> "} /* END STATE MACHINE */" then failwithf "%s: unexpected file ending" filename; let lines = List.tl lines in let lines = List.rev lines in (* Find the start of the state machine and split the list into * the prologue and the list of state code fragments. *) let rec loop acc = function | [] -> failwithf "%s: could not find state machine" filename | (_, "STATE_MACHINE {") :: lines -> ((filename, 1), acc), lines | (_, line) :: lines -> loop (acc ^ line ^ "\n") lines in let prologue, lines = loop "" lines in let statecodes = ref [] in let curr_state = ref None in let rex = Str.regexp "^ \\([A-Z0-9][A-Z0-9_\\.]*\\):$" in List.iter ( fun (loc, line) -> if Str.string_match rex line 0 then ( (* new case *) (match !curr_state with | None -> () | Some state -> statecodes := state :: !statecodes); curr_state := Some (Str.matched_group 1 line, "", loc); ) else ( (match !curr_state with | None -> failwithf "%s: missing label" (string_of_location loc) | Some (name, code, loc) -> curr_state := Some (name, code ^ "\n" ^ line, loc) ) ); ) lines; (match !curr_state with | None -> () | Some state -> statecodes := state :: !statecodes); let statecodes = List.rev !statecodes in prologue, statecodes in (* Read all the input files, called [generator/states*.c] *) let files = List.sort compare (Array.to_list (Sys.readdir "generator")) in let files = List.filter ( fun filename -> let len = String.length filename in len >= 8 && String.sub filename 0 6 = "states" && String.sub filename (len-2) 2 = ".c" ) files in let files = List.map ((^) "generator/") files in let files = List.map parse_states_file files in (* Mash together the prologues and the state codes. *) let prologue = String.concat "" ( List.map ( fun ((loc, prologue), _) -> line_directive_of_location loc ^ "\n" ^ prologue ^ "\n" ) files ) in let statecodes = List.concat (List.map snd files) in (* Resolve the state names in the code to paths. *) let statecodes = List.map ( fun (name, code, loc) -> let path = Str.split_delim dot_rex name in let state = find_state path in state, code, loc ) statecodes in (* Parse the state code fragments to get internal state * transitions, marked by "%STATE". *) let rex = Str.regexp "%\\([\\^\\.]*[A-Z0-9][A-Z0-9_\\.]*\\)" in List.iter ( fun (state, code, loc) -> let code = Str.full_split rex code in let code = List.map ( function | Str.Delim str -> Str.Delim (String.sub str 1 (String.length str - 1)) | (Str.Text _) as c -> c ) code in (* Create the list of internal transitions. *) state.parsed <- { state.parsed with internal_transitions = ( filter_map ( function | Str.Delim str -> let next_state = resolve_state state.parsed.prefix str in Some next_state | Str.Text _ -> None ) code ) }; (* Create the final C code fragment. *) state.parsed <- { state.parsed with loc = loc; code = String.concat "" ( List.map ( function | Str.Delim str -> let next_state = resolve_state state.parsed.prefix str in next_state.parsed.state_enum | Str.Text text -> text ) code ) } ) statecodes; prologue (* Verify state transitions are permitted. *) let () = let verify_state_transition from_state to_state = let from_prefix = from_state.parsed.prefix and to_prefix = to_state.parsed.prefix in (* Going from state to state within the same group is always allowed. *) if from_prefix = to_prefix then () (* Going upwards to any state is always allowed. *) else if List.length from_prefix > List.length to_prefix then () (* When going downwards (even into an adjacent tree) you must * always enter a group at the START state. *) else if to_state.name <> "START" then ( failwithf "non-permitted state transition: %s.%s -> %s.%s" (String.concat "." from_prefix) from_state.name (String.concat "." to_prefix) to_state.name ) in List.iter ( fun ({ parsed = { internal_transitions; events } } as state) -> List.iter (verify_state_transition state) internal_transitions; List.iter (fun (_, next_state) -> verify_state_transition state next_state) events ) states (* Write the state machine code. *) let generate_lib_states_h () = generate_header ~extra_sources:["generator/states*.c"] CStyle; pr "enum state {\n"; List.iter ( fun ({ comment; parsed = { display_name; state_enum } }) -> pr " "; pr_wrap_c_comment (fun () -> pr "%s: %s" display_name comment); pr "\n"; pr " %s,\n" state_enum; pr "\n"; ) states; pr "};\n"; pr "\n"; pr "/* These correspond to the external events in generator/generator. */\n"; pr "enum external_event {\n"; List.iter ( fun e -> pr " %s,\n" (c_string_of_external_event e) ) all_external_events; pr "};\n"; pr "\n"; pr "/* State groups. */\n"; pr "enum state_group {\n"; pr " GROUP_TOP,\n"; let rec loop prefix = function | [] -> () | State _ :: rest -> loop prefix rest | Group (name, group) :: rest -> let enum = "GROUP" ^ String.concat "" (List.map ((^) "_") prefix) ^ "_" ^ name in pr " %s,\n" enum; loop (prefix @ [name]) group; loop prefix rest in loop [] state_machine; pr "};\n"; pr "\n"; pr "/* State transitions defined in states.c. */\n"; List.iter ( fun { parsed = { state_enum } } -> pr "extern int nbd_internal_enter_%s (\n" state_enum; pr " struct nbd_handle *h, bool *blocked\n"; pr " );\n" ) states let generate_lib_states_c () = generate_header ~extra_sources:["generator/states*.c"] CStyle; pr "%s\n" state_machine_prologue; pr "\n"; pr "#define SET_NEXT_STATE(s) (*blocked = false, *next_state = (s))\n"; pr "#define SET_NEXT_STATE_AND_BLOCK(s) (*next_state = (s))\n"; (* The state machine C code fragments. *) List.iter ( fun { comment; parsed = { display_name; state_enum; loc; code } } -> pr "\n"; pr_wrap_c_comment (fun () -> pr "%s: %s" display_name comment); pr "\n"; pr "static int\n"; pr "enter_%s (\n" state_enum; pr " struct nbd_handle *h, enum state *next_state, bool *blocked\n"; pr ")\n"; pr "{\n"; if code <> "" then ( pr "%s\n" (line_directive_of_location loc); pr "%s\n" code ) else pr " return 0;\n"; pr "}\n"; pr "\n"; let output_loc = "lib/states.c", output_lineno () + 1 in pr "%s\n" (line_directive_of_location output_loc); pr "int\n"; pr "nbd_internal_enter_%s (\n" state_enum; pr " struct nbd_handle *h, bool *blocked\n"; pr ")\n"; pr "{\n"; pr " int r;\n"; pr " enum state next;\n"; pr "\n"; pr " next = %s;\n" state_enum; pr " r = enter_%s (\n" state_enum; pr " h, &next, blocked\n"; pr " );\n"; pr " if (get_next_state (h) != next) {\n"; pr "#ifdef LIBNBD_STATE_VERBOSE\n"; pr " debug (h, \"transition: %%s -> %%s\",\n"; pr " \"%s\",\n" display_name; pr " nbd_internal_state_short_string (next));\n"; pr "#endif\n"; pr " set_next_state (h, next);\n"; pr " }\n"; pr " return r;\n"; pr "}\n"; ) states let generate_lib_states_run_c () = generate_header ~extra_sources:["generator/states*.c"] CStyle; pr "#include \n"; pr "\n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "\n"; pr "#include \"libnbd.h\"\n"; pr "#include \"internal.h\"\n"; pr "\n"; pr "/* Run the state machine based on an external event until it would block. */\n"; pr "int\n"; pr "nbd_internal_run (struct nbd_handle *h, enum external_event ev)\n"; pr "{\n"; pr " int r;\n"; pr " bool blocked;\n"; pr "\n"; pr " /* Validate and handle the external event. */\n"; pr " switch (get_next_state (h))\n"; pr " {\n"; List.iter ( fun ({ parsed = { display_name; state_enum; events } } as state) -> pr " case %s:\n" state_enum; if events <> [] then ( pr " switch (ev)\n"; pr " {\n"; List.iter ( fun (e, next_state) -> pr " case %s:\n" (c_string_of_external_event e); if state != next_state then ( pr " set_next_state (h, %s);\n" next_state.parsed.state_enum; pr "#ifdef LIBNBD_STATE_VERBOSE\n"; pr " debug ("; let print_debug_args () = pr "h, \"event %%s: %%s -> %%s\", "; pr "\"%s\", \"%s\", \"%s\");" (string_of_external_event e) display_name next_state.parsed.display_name; in pr_wrap ',' print_debug_args; pr "\n"; pr "#endif\n" ); pr " goto ok;\n"; ) events; pr " default: ; /* nothing, silence GCC warning */\n"; pr " }\n"; ); pr " break;\n"; ) states; pr " }\n"; pr "\n"; pr " set_error (EINVAL, \"external event %%d is invalid in state %%s\",\n"; pr " ev, nbd_internal_state_short_string (get_next_state (h)));\n"; pr " return -1;\n"; pr "\n"; pr " ok:\n"; pr " do {\n"; pr " blocked = true;\n"; pr "\n"; pr " /* Run a single step. */\n"; pr " switch (get_next_state (h))\n"; pr " {\n"; List.iter ( fun { parsed = { state_enum } } -> pr " case %s:\n" state_enum; pr " r = nbd_internal_enter_%s (h, &blocked);\n" state_enum; pr " break;\n" ) states; pr " default:\n"; pr " abort (); /* Should never happen, but keeps GCC happy. */\n"; pr " }\n"; pr "\n"; pr " if (r == -1) {\n"; pr " assert (nbd_get_error () != NULL);\n"; pr " return -1;\n"; pr " }\n"; pr " } while (!blocked);\n"; pr " return 0;\n"; pr "}\n"; pr "\n"; pr "/* Returns whether in the given state read or write would be valid.\n"; pr " * NB: is_locked = false, may_set_error = false.\n"; pr " */\n"; pr "int\n"; pr "nbd_internal_aio_get_direction (enum state state)\n"; pr "{\n"; pr " int r = 0;\n"; pr "\n"; pr " switch (state)\n"; pr " {\n"; List.iter ( fun ({ parsed = { state_enum; events } }) -> pr " case %s:\n" state_enum; List.iter ( fun (e, _) -> match e with | NotifyRead -> pr " r |= LIBNBD_AIO_DIRECTION_READ;\n" | NotifyWrite -> pr " r |= LIBNBD_AIO_DIRECTION_WRITE;\n" | CmdCreate | CmdConnectSockAddr | CmdConnectTCP | CmdConnectCommand | CmdConnectSA | CmdConnectSocket | CmdIssue -> () ) events; pr " break;\n"; ) states; pr " }\n"; pr "\n"; pr " return r;\n"; pr "}\n"; pr "\n"; pr "/* Other functions associated with the state machine. */\n"; pr "const char *\n"; pr "nbd_internal_state_short_string (enum state state)\n"; pr "{\n"; pr " switch (state)\n"; pr " {\n"; List.iter ( fun ({ parsed = { display_name; state_enum } }) -> pr " case %s:\n" state_enum; pr " return \"%s\";\n" display_name ) states; pr " }\n"; pr "\n"; pr " /* This function is only used for debug messages, and\n"; pr " * this should never happen.\n"; pr " */\n"; pr " return \"UNKNOWN!\";\n"; pr "}\n"; pr "\n"; pr "const char *\n"; pr "nbd_unlocked_connection_state (struct nbd_handle *h)\n"; pr "{\n"; pr " switch (get_next_state (h))\n"; pr " {\n"; List.iter ( fun ({ comment; parsed = { display_name; state_enum } }) -> pr " case %s:\n" state_enum; pr " return \"%s\" \": \"\n" display_name; pr " \"%s\";\n" comment; pr "\n"; ) states; pr " }\n"; pr "\n"; pr " return NULL;\n"; pr "}\n"; pr "\n"; pr "/* Map a state to its group name. */\n"; pr "enum state_group\n"; pr "nbd_internal_state_group (enum state state)\n"; pr "{\n"; pr " switch (state) {\n"; List.iter ( fun ({ parsed = { prefix; state_enum } }) -> pr " case %s:\n" state_enum; if prefix = [] then pr " return GROUP_TOP;\n" else pr " return GROUP%s;\n" (String.concat "" (List.map ((^) "_") prefix)) ) states; pr " default:\n"; pr " abort (); /* Should never happen, but keeps GCC happy. */\n"; pr " }\n"; pr "}\n"; pr "\n"; pr "/* Map a state group to its parent group. */\n"; pr "enum state_group\n"; pr "nbd_internal_state_group_parent (enum state_group group)\n"; pr "{\n"; pr " switch (group) {\n"; pr " case GROUP_TOP:\n"; pr " return GROUP_TOP;\n"; let rec loop prefix = function | [] -> () | State _ :: rest -> loop prefix rest | Group (name, group) :: rest -> let enum = "GROUP" ^ String.concat "" (List.map ((^) "_") prefix) ^ "_" ^ name in pr " case %s:\n" enum; if prefix = [] then pr " return GROUP_TOP;\n" else ( let parent = "GROUP" ^ String.concat "" (List.map ((^) "_") prefix) in pr " return %s;\n" parent ); loop (prefix @ [name]) group; loop prefix rest in loop [] state_machine; pr " default:\n"; pr " abort (); /* Should never happen, but keeps GCC happy. */\n"; pr " }\n"; pr "};\n" libnbd-1.20.3/generator/C.mli0000644000175000017500000000374014527200623011370 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generate the C API and documentation * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) type closure_style = Direct | AddressOf | Pointer type parens_style = NoParens | ParensSameLine | ParensNewLineWithIndent of int val generate_lib_libnbd_syms : unit -> unit val generate_include_libnbd_h : unit -> unit val generate_lib_unlocked_h : unit -> unit val generate_lib_api_c : unit -> unit val name_of_arg : API.arg -> string list val name_of_optarg : API.optarg -> string val arg_attr_nonnull : API.arg -> bool list val optarg_attr_nonnull : API.optarg -> bool list val print_arg_list : ?wrap:bool -> ?maxcol:int -> ?handle:bool -> ?types:bool -> ?parens:parens_style -> ?closure_style:closure_style -> API.arg list -> API.optarg list -> unit val print_cbarg_list : ?wrap:bool -> ?maxcol:int -> ?types:bool -> ?parens:bool -> API.cbarg list -> unit val print_call : ?wrap:bool -> ?maxcol:int -> ?closure_style:closure_style -> string -> API.arg list -> API.optarg list -> API.ret -> unit val errcode_of_ret : API.ret -> string option val type_of_ret : API.ret -> string libnbd-1.20.3/generator/C.ml0000644000175000017500000007350614560164272011234 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generate the C API and documentation * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Printf open API open Utils type closure_style = Direct | AddressOf | Pointer type parens_style = NoParens | ParensSameLine | ParensNewLineWithIndent of int let generate_lib_libnbd_syms () = generate_header HashStyle; (* Sort and group the calls by first_version, and emit them in order. *) let cmp (_, {first_version = a}) (_, {first_version = b}) = compare a b in let calls = List.sort cmp handle_calls in let extract ((_, {first_version}) as call) = first_version, call in let calls = List.map extract calls in let calls = group_by calls in let prev = ref None in List.iter ( fun ((major, minor), calls) -> pr "# Public symbols in libnbd %d.%d:\n" major minor; pr "LIBNBD_%d.%d {\n" major minor; pr " global:\n"; if (major, minor) = (1, 0) then ( pr " nbd_create;\n"; pr " nbd_close;\n"; pr " nbd_get_errno;\n"; pr " nbd_get_error;\n" ); List.iter (fun (name, _) -> pr " nbd_%s;\n" name) calls; (match !prev with | None -> pr " # Everything else is hidden.\n"; pr " local: *;\n"; | Some _ -> () ); pr "}"; (match !prev with | None -> () | Some (old_major, old_minor) -> pr " LIBNBD_%d.%d" old_major old_minor ); pr ";\n"; pr "\n"; prev := Some (major, minor) ) calls let errcode_of_ret = function | RBool | RErr | RFd | RInt | RInt64 | RCookie | RSizeT -> Some "-1" | RStaticString | RString -> Some "NULL" | RUInt | RUIntPtr | RUInt64 | REnum _ | RFlags _ -> None (* errors not possible *) let type_of_ret = function | RBool | RErr | RFd | RInt | REnum _ -> "int" | RInt64 | RCookie -> "int64_t" | RSizeT -> "ssize_t" | RStaticString -> "const char *" | RString -> "char *" | RUInt -> "unsigned" | RUIntPtr -> "uintptr_t" | RUInt64 -> "uint64_t" | RFlags _ -> "uint32_t" let name_of_arg = function | Bool n -> [n] | BytesIn (n, len) -> [n; len] | BytesOut (n, len) -> [n; len] | BytesPersistIn (n, len) -> [n; len] | BytesPersistOut (n, len) -> [n; len] | Closure { cbname } -> [ sprintf "%s_callback" cbname; sprintf "%s_user_data" cbname ] | Enum (n, _) -> [n] | Extent64 _ -> assert false (* only used in extent64_closure *) | Fd n -> [n] | Flags (n, _) -> [n] | Int n -> [n] | Int64 n -> [n] | Path n -> [n] | SizeT n -> [n] | SockAddrAndLen (n, len) -> [n; len] | String n -> [n] | StringList n -> [n] | UInt n -> [n] | UInt32 n -> [n] | UInt64 n -> [n] | UIntPtr n -> [n] let name_of_optarg = function | OClosure { cbname } -> cbname | OFlags (n, _, _) -> n (* Map function arguments to __attribute__((nonnull)) annotations. * Because a single arg may map to multiple C parameters this * returns a list. Note: true => add attribute nonnull. *) let arg_attr_nonnull = function (* BytesIn/Out are passed using a non-null pointer, and size_t *) | BytesIn _ | BytesOut _ | BytesPersistIn _ | BytesPersistOut _ -> [ true; false ] (* sockaddr is also non-null pointer, and length *) | SockAddrAndLen (n, len) -> [ true; false ] (* strings should be marked as non-null *) | Path _ | String _ -> [ true ] (* list of strings should be marked as non-null *) | StringList n -> [ true ] (* numeric and other non-pointer types are not able to be null *) | Bool _ | Closure _ | Enum _ | Fd _ | Flags _ | Int _ | Int64 _ | SizeT _ | UInt _ | UInt32 _ | UInt64 _ | UIntPtr _ -> [ false ] | Extent64 _ -> assert false (* only used in extent64_closure *) let optarg_attr_nonnull (OClosure _ | OFlags _) = [ false ] let rec print_arg_list ?(wrap = false) ?maxcol ?handle ?types ?(parens = ParensSameLine) ?closure_style args optargs = (match parens with | NoParens -> () | ParensSameLine -> pr "(" | ParensNewLineWithIndent indent -> pr "(\n%s" (spaces (indent + 2)) ); if wrap then pr_wrap ?maxcol ',' (fun () -> print_arg_list' ?handle ?types ?closure_style args optargs) else print_arg_list' ?handle ?types ?closure_style args optargs; (match parens with | NoParens -> () | ParensSameLine -> pr ")" | ParensNewLineWithIndent indent -> pr "\n%s)" (spaces indent) ) and print_arg_list' ?(handle = false) ?(types = true) ?(closure_style = Direct) args optargs = let comma = ref false in if handle then ( comma := true; if types then pr "struct nbd_handle *"; pr "h" ); List.iter ( fun arg -> if !comma then pr ", "; comma := true; match arg with | Bool n -> if types then pr "bool "; pr "%s" n | BytesIn (n, len) | BytesPersistIn (n, len) -> if types then pr "const void *"; pr "%s, " n; if types then pr "size_t "; pr "%s" len | BytesOut (n, len) | BytesPersistOut (n, len) -> if types then pr "void *"; pr "%s, " n; if types then pr "size_t "; pr "%s" len | Closure { cbname; cbargs } -> if types then pr "nbd_%s_callback " cbname; let mark = match closure_style with | Direct -> "" | AddressOf -> "&" | Pointer -> "*" in pr "%s%s_callback" mark cbname | Enum (n, _) -> if types then pr "int "; pr "%s" n | Extent64 _ -> assert false (* only used in extent64_closure *) | Flags (n, _) -> if types then pr "uint32_t "; pr "%s" n | Fd n | Int n -> if types then pr "int "; pr "%s" n | Int64 n -> if types then pr "int64_t "; pr "%s" n | SizeT n -> if types then pr "size_t "; pr "%s" n | Path n | String n -> if types then pr "const char *"; pr "%s" n | StringList n -> if types then pr "char **"; pr "%s" n | SockAddrAndLen (n, len) -> if types then pr "const struct sockaddr *"; pr "%s, " n; if types then pr "socklen_t "; pr "%s" len | UInt n -> if types then pr "unsigned "; pr "%s" n | UInt32 n -> if types then pr "uint32_t "; pr "%s" n | UInt64 n -> if types then pr "uint64_t "; pr "%s" n | UIntPtr n -> if types then pr "uintptr_t "; pr "%s" n ) args; List.iter ( fun optarg -> if !comma then pr ", "; comma := true; match optarg with | OClosure { cbname; cbargs } -> if types then pr "nbd_%s_callback " cbname; let mark = match closure_style with | Direct -> "" | AddressOf -> "&" | Pointer -> "*" in pr "%s%s_callback" mark cbname | OFlags (n, _, _) -> if types then pr "uint32_t "; pr "%s" n ) optargs let print_call ?wrap ?maxcol ?closure_style name args optargs ret = pr "%s " (type_of_ret ret); let designator_column = output_column () in pr "nbd_%s " name; print_arg_list ~handle:true ?wrap ?maxcol ~parens:(ParensNewLineWithIndent designator_column) ?closure_style args optargs let print_fndecl ?wrap ?closure_style name args optargs ret = pr "extern "; print_call ?wrap ?closure_style name args optargs ret; (* For RString, note that the caller must free() the argument. * Since this is used in a public header, we must use gcc's spelling * of __builtin_free in case bare free is defined as a macro. *) (match ret with | RString -> pr "\n LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free)"; | _ -> () ); (* Output __attribute__((nonnull)) for the function parameters: * eg. struct nbd_handle *, int, char * * => [ true, false, true ] * => LIBNBD_ATTRIBUTE_NONNULL (1, 3) * => __attribute__ ((nonnull (1, 3))) *) let nns : bool list = [ true ] (* struct nbd_handle * *) @ List.flatten (List.map arg_attr_nonnull args) @ List.flatten (List.map optarg_attr_nonnull optargs) in let nns = List.mapi (fun i b -> (i+1, b)) nns in let nns = filter_map (fun (i, b) -> if b then Some i else None) nns in let nns : string list = List.map string_of_int nns in pr "\n LIBNBD_ATTRIBUTE_NONNULL (%s);\n" (String.concat ", " nns) let rec print_cbarg_list ?(wrap = false) ?maxcol ?types ?(parens = true) cbargs = if parens then pr "("; if wrap then pr_wrap ?maxcol ',' (fun () -> print_cbarg_list' ?types cbargs) else print_cbarg_list' ?types cbargs; if parens then pr ")" and print_cbarg_list' ?(types = true) cbargs = if types then pr "void *"; pr "user_data"; List.iter ( fun cbarg -> pr ", "; match cbarg with | CBArrayAndLen (UInt32 n, len) -> if types then pr "uint32_t *"; pr "%s, " n; if types then pr "size_t "; pr "%s" len | CBArrayAndLen (Extent64 n, len) -> if types then pr "nbd_extent *"; pr "%s, " n; if types then pr "size_t "; pr "%s" len | CBArrayAndLen _ -> assert false | CBBytesIn (n, len) -> if types then pr "const void *"; pr "%s, " n; if types then pr "size_t "; pr "%s" len | CBInt n -> if types then pr "int "; pr "%s" n | CBInt64 n -> if types then pr "int64_t "; pr "%s" n | CBMutable (Int n) -> if types then pr "int *"; pr "%s" n | CBMutable arg -> assert false | CBString n -> if types then pr "const char *"; pr "%s" n | CBUInt n -> if types then pr "unsigned "; pr "%s" n | CBUInt64 n -> if types then pr "uint64_t "; pr "%s" n ) cbargs (* Callback structs/typedefs in *) let print_closure_structs () = pr "/* These are used for callback parameters. They are passed\n"; pr " * by value not by reference. See CALLBACKS in libnbd(3).\n"; pr " */\n"; List.iter ( fun { cbname; cbargs } -> pr "typedef struct {\n"; pr " int (*callback) "; print_cbarg_list ~wrap:true cbargs; pr ";\n"; pr " void *user_data;\n"; pr " void (*free) (void *user_data);\n"; pr "} nbd_%s_callback;\n" cbname; pr "#define LIBNBD_HAVE_NBD_%s_CALLBACK 1\n" (String.uppercase_ascii cbname); pr "\n" ) all_closures; pr "/* Note NBD_NULL_* are only generated for callbacks which are\n"; pr " * optional. (See OClosure in the generator).\n"; pr " */\n"; let oclosures = let optargs = List.map (fun (_, { optargs }) -> optargs) handle_calls in let optargs = List.flatten optargs in let optargs = filter_map (function OClosure cb -> Some cb | _ -> None) optargs in List.sort_uniq compare optargs in List.iter ( fun { cbname } -> pr "#define NBD_NULL_%s ((nbd_%s_callback) { .callback = NULL })\n" (String.uppercase_ascii cbname) cbname; ) oclosures; pr "\n" let print_fndecl_and_define ?wrap name args optargs ret = let name_upper = String.uppercase_ascii name in print_fndecl ?wrap name args optargs ret; pr "#define LIBNBD_HAVE_NBD_%s 1\n" name_upper; pr "\n" let print_ns_ctxt ns ns_upper ctxt = let ctxt_macro = macro_name ctxt in let ctxt_upper = String.uppercase_ascii ctxt_macro in pr "#define LIBNBD_CONTEXT_%s_%s \"%s:%s\"\n" ns_upper ctxt_upper ns ctxt let print_ns_ctxt_bits ns ctxt consts = if consts <> [] then ( pr "\n"; pr "/* \"%s:%s\" context related constants */\n" ns ctxt; List.iter (fun (n, i) -> pr "#define LIBNBD_%-30s %d\n" n i) consts ) let print_ns ns ctxts = let ns_upper = String.uppercase_ascii ns in pr "/* \"%s\" namespace */\n" ns; pr "#define LIBNBD_NAMESPACE_%s \"%s:\"\n" ns_upper ns; pr "\n"; pr "/* \"%s\" namespace contexts */\n" ns; List.iter ( fun (ctxt, _) -> print_ns_ctxt ns ns_upper ctxt ) ctxts; List.iter ( fun (ctxt, consts) -> print_ns_ctxt_bits ns ctxt consts ) ctxts; pr "\n" let generate_include_libnbd_h () = generate_header CStyle; pr "#ifndef LIBNBD_H\n"; pr "#define LIBNBD_H\n"; pr "\n"; pr "/* This is the public interface to libnbd, a client library for\n"; pr " * accessing Network Block Device (NBD) servers.\n"; pr " *\n"; pr " * Please read the libnbd(3) manual page to\n"; pr " * find out how to use this library.\n"; pr " */\n"; pr "\n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "\n"; pr "#ifdef __cplusplus\n"; pr "extern \"C\" {\n"; pr "#endif\n"; pr "\n"; pr "#if defined (__GNUC__)\n"; pr "#define LIBNBD_GCC_VERSION \\\n"; pr " (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)\n"; pr "#endif\n"; pr "\n"; pr "#ifndef LIBNBD_ATTRIBUTE_NONNULL\n"; pr "#if defined (__GNUC__) && LIBNBD_GCC_VERSION >= 120000 /* gcc >= 12.0 */\n"; pr "#define LIBNBD_ATTRIBUTE_NONNULL(...) \\\n"; pr " __attribute__ ((__nonnull__ (__VA_ARGS__)))\n"; pr "#else\n"; pr "#define LIBNBD_ATTRIBUTE_NONNULL(...)\n"; pr "#endif\n"; pr "#endif /* ! defined LIBNBD_ATTRIBUTE_NONNULL */\n"; pr "\n"; pr "#if defined (__GNUC__) && LIBNBD_GCC_VERSION >= 120000 /* gcc >= 12.0 */\n"; pr "#define LIBNBD_ATTRIBUTE_ALLOC_DEALLOC(fn) \\\n"; pr " __attribute__ ((__malloc__, __malloc__ (fn, 1)))\n"; pr "#else\n"; pr "#define LIBNBD_ATTRIBUTE_ALLOC_DEALLOC(fn)\n"; pr "#endif\n"; pr "\n"; pr "struct nbd_handle;\n"; pr "\n"; List.iter ( fun { enum_prefix; enums } -> List.iter ( fun (enum, i) -> let enum = sprintf "LIBNBD_%s_%s" enum_prefix enum in pr "#define %-40s %d\n" enum i ) enums; pr "\n" ) all_enums; List.iter ( fun { flag_prefix; flags } -> let mask = ref 0 in List.iter ( fun (flag, i) -> let flag = sprintf "LIBNBD_%s_%s" flag_prefix flag in pr "#define %-40s 0x%02xU\n" flag i; mask := !mask lor i ) flags; let flag = sprintf "LIBNBD_%s_MASK" flag_prefix in pr "#define %-40s 0x%02xU\n" flag !mask; pr "\n" ) all_flags; List.iter ( fun (n, i) -> let n = sprintf "LIBNBD_%s" n in pr "#define %-40s %d\n" n i ) constants; pr "\n"; pr "extern void nbd_close (struct nbd_handle *h); /* h can be NULL */\n"; pr "#define LIBNBD_HAVE_NBD_CLOSE 1\n"; pr "\n"; pr "extern struct nbd_handle *nbd_create (void)\n"; pr " LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (nbd_close);\n"; pr "#define LIBNBD_HAVE_NBD_CREATE 1\n"; pr "\n"; pr "extern const char *nbd_get_error (void);\n"; pr "#define LIBNBD_HAVE_NBD_GET_ERROR 1\n"; pr "\n"; pr "extern int nbd_get_errno (void);\n"; pr "#define LIBNBD_HAVE_NBD_GET_ERRNO 1\n"; pr "\n"; pr "/* This is used in the callback for nbd_block_status_64.\n"; pr " */\n"; pr "typedef struct {\n"; pr " uint64_t length; /* Will not exceed INT64_MAX */\n"; pr " uint64_t flags;\n"; pr "} nbd_extent;\n"; pr "\n"; print_closure_structs (); List.iter ( fun (name, { args; optargs; ret }) -> print_fndecl_and_define ~wrap:true name args optargs ret ) handle_calls; List.iter ( fun (ns, ctxts) -> print_ns ns ctxts ) metadata_namespaces; pr "#ifdef __cplusplus\n"; pr "}\n"; pr "#endif\n"; pr "\n"; pr "#endif /* LIBNBD_H */\n" let generate_lib_unlocked_h () = generate_header CStyle; pr "#ifndef LIBNBD_UNLOCKED_H\n"; pr "#define LIBNBD_UNLOCKED_H\n"; pr "\n"; List.iter ( fun (name, { args; optargs; ret }) -> print_fndecl ~wrap:true ~closure_style:Pointer ("unlocked_" ^ name) args optargs ret ) handle_calls; pr "\n"; pr "#endif /* LIBNBD_UNLOCKED_H */\n" let permitted_state_text ?(fold=false) permitted_states = assert (permitted_states <> []); let sep = if fold then ", or\n" else ", or " in String.concat sep (List.map ( function | Created -> "newly created" | Connecting -> "connecting" | Negotiating -> "negotiating" | Connected -> "connected with the server" | Closed -> "shut down" | Dead -> "dead" ) permitted_states ) (* Generate wrappers around each API call which are a place to * grab the thread mutex (lock) and do logging. *) let generate_lib_api_c () = (* Print the wrapper added around all API calls. *) let rec print_wrapper (name, {args; optargs; ret; permitted_states; is_locked; may_set_error}) = if permitted_states <> [] then ( pr "static inline bool\n"; pr "%s_in_permitted_state (struct nbd_handle *h)\n" name; pr "{\n"; pr " const enum state state = get_public_state (h);\n"; pr "\n"; let or_nl_indent = " ||\n " in let tests = List.map ( function | Created -> "nbd_internal_is_state_created (state)" | Connecting -> "nbd_internal_is_state_connecting (state)" | Negotiating -> "nbd_internal_is_state_negotiating (state)" | Connected -> "nbd_internal_is_state_ready (state)" ^ or_nl_indent ^ "nbd_internal_is_state_processing (state)" | Closed -> "nbd_internal_is_state_closed (state)" | Dead -> "nbd_internal_is_state_dead (state)" ) permitted_states in pr " if (!(%s)) {\n" (String.concat or_nl_indent tests); pr " set_error (nbd_internal_is_state_created (state) ? ENOTCONN : EINVAL,\n"; pr " \"invalid state: %%s: the handle must be %%s\",\n"; pr " nbd_internal_state_short_string (state),\n"; pr " \""; pr_wrap_cstr (fun () -> pr "%s" (permitted_state_text permitted_states)); pr "\");\n"; pr " return false;\n"; pr " }\n"; pr " return true;\n"; pr "}\n"; pr "\n" ); let need_out_label = ref false in let ret_c_type = type_of_ret ret and errcode = errcode_of_ret ret in pr "%s\n" ret_c_type; pr "nbd_%s " name; print_arg_list ~wrap:true ~handle:true ~parens:(ParensNewLineWithIndent 0) args optargs; pr "\n"; pr "{\n"; if permitted_states <> [] then pr " bool p;\n"; pr " %s ret;\n" ret_c_type; pr "\n"; pr " assert (h->magic == NBD_HANDLE_MAGIC);\n"; if may_set_error then ( pr " nbd_internal_set_error_context (\"nbd_%s\");\n" name; pr "\n"; ) else pr " /* This function must not call set_error. */\n"; (* Lock the handle. *) if is_locked then pr " pthread_mutex_lock (&h->lock);\n"; print_trace_enter name args optargs may_set_error; pr "\n"; (* Sanitize read buffers before any error is possible. *) List.iter ( function | BytesOut (n, count) | BytesPersistOut (n, count) -> pr " if (h->pread_initialize)\n"; pr " memset (%s, 0, %s);\n" n count | _ -> () ) args; (* Check current state is permitted for this call. *) if permitted_states <> [] then ( let value = match errcode with | Some value -> value | None -> assert false in pr " p = %s_in_permitted_state (h);\n" name; pr " if (unlikely (!p)) {\n"; pr " ret = %s;\n" value; pr " goto out;\n"; pr " }\n"; need_out_label := true ); (* Check parameters are valid. *) let print_flags_check n { flag_prefix; flags; guard } subset = let value = match errcode with | Some value -> value | None -> assert false in let mask = match subset with | Some [] -> "0" | Some subset -> let v = ref 0 in List.iter ( fun (flag, i) -> if List.mem flag subset then v := !v lor i ) flags; sprintf "0x%x" !v | None -> "LIBNBD_" ^ flag_prefix ^ "_MASK" in let guard = match guard with | Some value -> " &&\n " ^ value | None -> "" in pr " if (unlikely ((%s & ~%s) != 0)%s) {\n" n mask guard; pr " set_error (EINVAL, \"%%s: invalid value for flag: 0x%%x\",\n"; pr " \"%s\", %s);\n" n n; pr " ret = %s;\n" value; pr " goto out;\n"; pr " }\n"; need_out_label := true in List.iter ( function | Closure { cbname } -> let value = match errcode with | Some value -> value | None -> assert false in pr " if (CALLBACK_IS_NULL (%s_callback)) {\n" cbname; pr " set_error (EFAULT, \"%%s cannot be NULL\", \"%s\");\n" cbname; pr " ret = %s;\n" value; pr " goto out;\n"; pr " }\n"; need_out_label := true | Enum (n, { enum_prefix; enums }) -> let value = match errcode with | Some value -> value | None -> assert false in pr " switch (%s) {\n" n; List.iter ( fun (enum, _) -> pr " case LIBNBD_%s_%s:\n" enum_prefix enum ) enums; pr " break;\n"; pr " default:\n"; pr " set_error (EINVAL, \"%%s: invalid value for parameter: %%d\",\n"; pr " \"%s\", %s);\n" n n; pr " ret = %s;\n" value; pr " goto out;\n"; pr " }\n"; need_out_label := true | Flags (n, flags) -> print_flags_check n flags None | BytesIn (n, _) | BytesOut (n, _) | BytesPersistIn (n, _) | BytesPersistOut (n, _) | SockAddrAndLen (n, _) | Path n | String n | StringList n -> let value = match errcode with | Some value -> value | None -> assert false in pr " if (%s == NULL) {\n" n; pr " set_error (EFAULT, \"%%s cannot be NULL\", \"%s\");\n" n; pr " ret = %s;\n" value; pr " goto out;\n"; pr " }\n"; need_out_label := true | _ -> () ) args; List.iter ( function | OClosure _ -> () | OFlags (n, flags, subset) -> print_flags_check n flags subset ) optargs; (* Make the call. *) pr " ret = nbd_unlocked_%s " name; print_arg_list ~wrap:true ~types:false ~handle:true ~closure_style:AddressOf args optargs; pr ";\n"; pr "\n"; if !need_out_label then pr " out:\n"; print_trace_leave name ret may_set_error; pr "\n"; (* Finish any closures not transferred to state machine. *) List.iter ( function | Closure { cbname } -> pr " FREE_CALLBACK (%s_callback);\n" cbname | _ -> () ) args; List.iter ( function | OClosure { cbname } -> pr " FREE_CALLBACK (%s_callback);\n" cbname | OFlags _ -> () ) optargs; if is_locked then ( pr " if (h->public_state != get_next_state (h))\n"; pr " h->public_state = get_next_state (h);\n"; pr " pthread_mutex_unlock (&h->lock);\n" ); pr " return ret;\n"; pr "}\n"; pr "\n" (* Print the trace when we enter a call with debugging enabled. *) and print_trace_enter name args optargs may_set_error = pr " if_debug (h) {\n"; List.iter ( function | BytesIn (n, count) | BytesPersistIn (n, count) -> pr " char *%s_printable =\n" n; pr " nbd_internal_printable_buffer (%s, %s);\n" n count | Path n | String n -> pr " char *%s_printable =\n" n; pr " nbd_internal_printable_string (%s);\n" n | StringList n -> pr " char *%s_printable =\n" n; pr " nbd_internal_printable_string_list (%s);\n" n | BytesOut _ | BytesPersistOut _ | Bool _ | Closure _ | Enum _ | Flags _ | Fd _ | Int _ | Int64 _ | SizeT _ | SockAddrAndLen _ | UInt _ | UInt32 _ | UInt64 _ | UIntPtr _ -> () | Extent64 _ -> assert false (* only used in extent64_closure *) ) args; let indent = if may_set_error then ( pr " debug (h,\n"; spaces 11 ) else ( pr " debug_direct (h, \"nbd_%s\",\n" name; spaces 18 ) in pr "%s\"" indent; let print_format_string () = pr "enter:"; List.iter ( function | Bool n -> pr " %s=%%s" n | BytesOut (n, count) | BytesPersistOut (n, count) -> pr " %s= %s=%%zu" n count | BytesIn (n, count) | BytesPersistIn (n, count) -> pr " %s=\\\"%%s\\\" %s=%%zu" n count | Closure { cbname } -> pr " %s=%%s" cbname | Enum (n, _) -> pr " %s=%%d" n | Extent64 _ -> assert false (* only used in extent64_closure *) | Flags (n, _) -> pr " %s=0x%%x" n | Fd n | Int n -> pr " %s=%%d" n | Int64 n -> pr " %s=%%\"PRIi64\"" n | SizeT n -> pr " %s=%%zu" n | SockAddrAndLen (n, len) -> pr " %s= %s=%%d" n len | Path n | String n -> pr " %s=%%s" n | StringList n -> pr " %s=%%s" n | UInt n -> pr " %s=%%u" n | UInt32 n -> pr " %s=%%\"PRIu32\"" n | UInt64 n -> pr " %s=%%\"PRIu64\"" n | UIntPtr n -> pr " %s=%%\"PRIuPTR\"" n ) args; List.iter ( function | OClosure { cbname } -> pr " %s=%%s" cbname | OFlags (n, _, _) -> pr " %s=0x%%x" n ) optargs in pr_wrap_cstr print_format_string; pr "\""; let num_args = List.length args and num_optargs = List.length optargs in let num_allargs = num_args + num_optargs in if num_allargs > 0 then pr ",\n%s" indent; let print_args () = List.iteri ( fun i arg -> (match arg with | Bool n -> pr "%s ? \"true\" : \"false\"" n | BytesOut (n, count) | BytesPersistOut (n, count) -> pr "%s" count | BytesIn (n, count) | BytesPersistIn (n, count) -> pr "%s_printable ? %s_printable : \"\", %s" n n count | Closure _ -> pr "\"\"" | Enum (n, _) -> pr "%s" n | Extent64 _ -> assert false (* only used in extent64_closure *) | Flags (n, _) -> pr "%s" n | Fd n | Int n | Int64 n | SizeT n -> pr "%s" n | SockAddrAndLen (_, len) -> pr "(int) %s" len | Path n | String n | StringList n -> pr "%s_printable ? %s_printable : \"\"" n n | UInt n | UInt32 n | UInt64 n | UIntPtr n -> pr "%s" n ); if i < num_allargs - 1 then pr ", " ) args; List.iteri ( fun i optarg -> (match optarg with | OClosure { cbname } -> pr "CALLBACK_IS_NULL (%s_callback) ? \"\" : \"NULL\"" cbname | OFlags (n, _, _) -> pr "%s" n ); if num_args + i < num_allargs - 1 then pr ", " ) optargs in pr_wrap ',' print_args; pr ");\n"; List.iter ( function | BytesIn (n, _) | BytesPersistIn (n, _) | Path n | String n | StringList n -> pr " free (%s_printable);\n" n | BytesOut _ | BytesPersistOut _ | Bool _ | Closure _ | Enum _ | Flags _ | Fd _ | Int _ | Int64 _ | SizeT _ | SockAddrAndLen _ | UInt _ | UInt32 _ | UInt64 _ | UIntPtr _ -> () | Extent64 _ -> assert false (* only used in extent64_closure *) ) args; pr " }\n" (* Print the trace when we leave a call with debugging enabled. *) and print_trace_leave name ret may_set_error = pr " if_debug (h) {\n"; if may_set_error then ( (match errcode_of_ret ret with | Some r -> pr " if (ret == %s)\n" r; | None -> assert false ); pr " debug (h, \"leave: error=\\\"%%s\\\"\", nbd_get_error ());\n"; pr " else {\n"; (match ret with | RString -> pr " char *ret_printable =\n"; pr " nbd_internal_printable_string (ret);\n" | _ -> () ); pr " debug (" ) else pr " debug_direct ("; let print_args () = if may_set_error then pr "h, \"leave: ret=" else pr "h, \"nbd_%s\", \"leave: ret=" name; (match ret with | RBool | RErr | RFd | RInt | REnum _ -> pr "%%d\", ret" | RInt64 | RCookie -> pr "%%\" PRIi64, ret" | RSizeT -> pr "%%zd\", ret" | RString -> pr "%%s\", ret_printable ? ret_printable : \"\"" | RStaticString -> pr "%%s\", ret" | RUInt | RFlags _ -> pr "%%u\", ret" | RUIntPtr -> pr "%%\" PRIuPTR, ret" | RUInt64 -> pr "%%\" PRIu64, ret" ) in pr_wrap ',' print_args; pr ");\n"; if may_set_error then ( (match ret with | RString -> pr " free (ret_printable);\n" | _ -> () ); pr " }\n"; ); pr " }\n" in generate_header CStyle; pr "#include \n"; pr "\n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "\n"; pr "#include \n"; pr "\n"; pr "/* GCC will remove NULL checks from this file for any parameter\n"; pr " * annotated with attribute((nonnull)). See RHBZ#1041336. To\n"; pr " * avoid this, disable the attribute when including libnbd.h.\n"; pr " */\n"; pr "#define LIBNBD_ATTRIBUTE_NONNULL(...)\n"; pr "\n"; pr "#include \"libnbd.h\"\n"; pr "#include \"internal.h\"\n"; pr "\n"; List.iter print_wrapper handle_calls libnbd-1.20.3/generator/docs.mli0000644000175000017500000000211314527200427012131 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generate the C API and documentation * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) val generate_docs_Makefile_inc : unit -> unit val generate_docs_api_links_pod : unit -> unit val generate_docs_api_flag_links_pod : unit -> unit val generate_docs_nbd_pod : string -> API.call -> unit -> unit libnbd-1.20.3/generator/docs.ml0000644000175000017500000002075114527212175011773 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generate the C API and documentation * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Printf open API open Utils (* We generate a fragment of Makefile.am containing the list * of generated functions, used in rules for building the manual * pages. We exploit GNU make's sinclude to use this file without * upsetting automake. *) let generate_docs_Makefile_inc () = generate_header HashStyle; pr "api_built += \\\n"; List.iter ( fun (name, _) -> pr "\tnbd_%s \\\n" name; ) handle_calls; pr "\t$(NULL)\n" let generate_docs_api_links_pod () = let pages = List.map (fun (name, _) -> sprintf "nbd_%s(3)" name) handle_calls in let pages = "nbd_create(3)" :: "nbd_close(3)" :: "nbd_get_error(3)" :: "nbd_get_errno(3)" :: pages in let pages = List.sort compare pages in List.iteri ( fun i page -> if i > 0 then pr ",\n"; pr "L<%s>" page ) pages; pr ".\n" let generate_docs_api_flag_links_pod () = let pages = filter_map ( fun (name, _) -> if is_prefix name "is_" || is_prefix name "can_" then Some (sprintf "nbd_%s(3)" name) else None ) handle_calls in let pages = List.sort compare pages in List.iteri ( fun i page -> if i > 0 then pr ",\n"; pr "L<%s>" page ) pages; pr ".\n" let print_docs_closure { cbname; cbargs } = pr " typedef struct {\n"; pr " int (*callback) "; C.print_cbarg_list ~wrap:true ~maxcol:60 cbargs; pr ";\n"; pr " void *user_data;\n"; pr " void (*free) (void *user_data);\n"; pr " } nbd_%s_callback;\n" cbname let generate_docs_nbd_pod name { args; optargs; ret; shortdesc; longdesc; example; see_also; permitted_states; may_set_error; first_version = (major, minor) } () = pr "=head1 NAME\n"; pr "\n"; pr "nbd_%s -" name; (* Don't use pr_wrap here because it leaves trailing whitespace. *) let words = nsplit " " shortdesc in List.iter ( fun word -> if output_column () + String.length word > 70 then pr "\n%s" word else pr " %s" word ) words; pr "\n"; pr "\n"; pr "=head1 SYNOPSIS\n"; pr "\n"; pr " #include \n"; pr "\n"; List.iter ( function | Closure cb -> print_docs_closure cb; pr "\n" | _ -> () ) args; List.iter ( function | OClosure cb -> print_docs_closure cb; pr "\n" | _ -> () ) optargs; pr " "; C.print_call ~wrap:true ~maxcol:60 name args optargs ret; pr ";\n"; pr "\n"; pr "=head1 DESCRIPTION\n"; pr "\n"; pr "%s\n" longdesc; pr "\n"; pr "=head1 RETURN VALUE\n"; pr "\n"; let errcode = C.errcode_of_ret ret in (match ret with | RBool -> pr "This call returns a boolean value.\n" | RStaticString -> pr "This call returns a statically allocated string, valid for the\n"; pr "lifetime of the process or until libnbd is unloaded by\n"; pr "L. You B try to free the string.\n" | RErr -> pr "If the call is successful the function returns C<0>.\n" | RFd -> pr "This call returns a file descriptor.\n" | RInt -> pr "This call returns an integer E C<0>.\n"; | RInt64 -> pr "This call returns a 64 bit signed integer E C<0>.\n"; | RCookie -> pr "This call returns the 64 bit cookie of the command.\n"; pr "The cookie is E C<1>.\n"; pr "Cookies are unique (per libnbd handle, not globally).\n" | RSizeT -> pr "This call returns an integer size E C<0>.\n"; | RString -> pr "This call returns a string. The caller must free the\n"; pr "returned string to avoid a memory leak.\n"; | RUInt -> pr "This call returns a bitmask.\n"; | RUIntPtr -> pr "This call returns a C.\n"; | RUInt64 -> pr "This call returns a counter.\n"; | REnum { enum_prefix } -> pr "This call returns one of the LIBNBD_%s_* values.\n" enum_prefix; | RFlags { flag_prefix } -> pr "This call returns a bitmask of LIBNBD_%s_* values.\n" flag_prefix; ); pr "\n"; pr "=head1 ERRORS\n"; pr "\n"; if may_set_error then ( let value = match errcode with | Some value -> value | None -> assert false in pr "On error C<%s> is returned.\n" value; pr "\n"; pr "Refer to L\n"; pr "for how to get further details of the error.\n" ) else pr "This function does not fail.\n"; pr "\n"; pr "The following parameters must not be NULL: C"; List.iter ( fun arg -> let nns = C.arg_attr_nonnull arg in if List.mem true nns then pr ", C<%s>" (List.hd (C.name_of_arg arg)) ) args; List.iter ( fun arg -> let nns = C.optarg_attr_nonnull arg in if List.mem true nns then pr ", C<%s>" (C.name_of_optarg arg) ) optargs; pr ".\n"; pr "For more information see L.\n"; pr "\n"; if permitted_states <> [] then ( pr "=head1 HANDLE STATE\n"; pr "\n"; pr "nbd_%s\ncan be called when the handle is in the following %s:\n" name (if List.length permitted_states = 1 then "state" else "states"); pr "\n"; pr " ┌─────────────────────────────────────┬─────────────────────────┐\n"; let row ps description = let permitted = List.mem ps permitted_states in pr " │ %-35s │ %s %-20s │\n" description (if permitted then "✅" else "❌") (if permitted then "allowed" else "error") in List.iter ( fun ps -> match ps with | Created -> row ps "Handle created, before connecting" | Connecting -> row ps "Connecting" | Negotiating -> row ps "Connecting & handshaking (opt_mode)" | Connected -> row ps "Connected to the server" | Closed -> row ps "Connection shut down" | Dead -> row ps "Handle dead" ) all_permitted_states; pr " └─────────────────────────────────────┴─────────────────────────┘\n"; pr "\n" ); pr "=head1 VERSION\n"; pr "\n"; pr "This function first appeared in libnbd %d.%d.\n" major minor; pr "\n"; pr "If you need to test if this function is available at compile time\n"; pr "check if the following macro is defined:\n"; pr "\n"; pr " #define LIBNBD_HAVE_NBD_%s 1\n" (String.uppercase_ascii name); pr "\n"; (match example with | None -> () | Some filename -> pr "=head1 EXAMPLE\n"; pr "\n"; pr "This example is also available as F<%s>\n" filename; pr "in the libnbd source code.\n"; pr "\n"; let chan = open_in filename in (try while true do let line = input_line chan in let len = String.length line in if len > 60 then failwithf "%s: %s: line too long in example" name filename; if len = 0 then pr "\n" else pr " %s\n" line done with End_of_file -> () ); close_in chan; pr "\n" ); let () = pr "=head1 SEE ALSO\n"; pr "\n"; let other_links = extract_links longdesc in let std_links = [MainPageLink; Link "create"] in let links = see_also @ other_links @ std_links in let links = sort_uniq_links links in List.iter verify_link links; let links = List.map pod_of_link links in let comma = ref false in List.iter ( fun pod -> if !comma then pr ",\n"; comma := true; pr "%s" pod ) links; pr ".\n\n" in pr "\ =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat " libnbd-1.20.3/generator/Python.mli0000644000175000017500000000203114525371754012473 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: Python bindings * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) val generate_python_methods_h : unit -> unit val generate_python_libnbdmod_c : unit -> unit val generate_python_methods_c : unit -> unit val generate_python_nbd_py : unit -> unit libnbd-1.20.3/generator/Python.ml0000644000175000017500000007301614525371754012335 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: Python bindings * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Printf open API open Utils let generate_python_methods_h () = generate_header CStyle; pr "#ifndef LIBNBD_METHODS_H\n"; pr "#define LIBNBD_METHODS_H\n"; pr "\n"; pr "#define PY_SSIZE_T_CLEAN 1\n"; pr "#include \n"; pr "\n"; pr "#include \n"; pr "\n"; pr "\ extern char **nbd_internal_py_get_string_list (PyObject *); extern void nbd_internal_py_free_string_list (char **); extern int nbd_internal_py_get_sockaddr (PyObject *, struct sockaddr_storage *, socklen_t *); extern PyObject *nbd_internal_py_get_aio_view (PyObject *, int); extern int nbd_internal_py_init_aio_buffer (PyObject *); extern PyObject *nbd_internal_py_get_nbd_buffer_type (void); extern PyObject *nbd_internal_py_wrap_errptr (int); extern PyObject *nbd_internal_py_get_subview (PyObject *, const char *, size_t); static inline struct nbd_handle * get_handle (PyObject *obj) { assert (obj); assert (obj != Py_None); return PyCapsule_GetPointer(obj, \"nbd_handle\"); } /* nbd.Error exception. */ extern PyObject *nbd_internal_py_Error; static inline void raise_exception () { PyObject *args = Py_BuildValue (\"si\", nbd_get_error (), nbd_get_errno ()); if (args != NULL) { PyErr_SetObject (nbd_internal_py_Error, args); Py_DECREF (args); } } "; List.iter ( fun name -> pr "extern PyObject *nbd_internal_py_%s (\n" name; pr " PyObject *self, PyObject *args\n"; pr " );\n" ) ([ "create"; "close"; "display_version"; "alloc_aio_buffer"; "aio_buffer_is_zero" ] @ List.map fst handle_calls); pr "\n"; pr "#endif /* LIBNBD_METHODS_H */\n" let generate_python_libnbdmod_c () = generate_header CStyle; pr "#include \n"; pr "\n"; pr "#define PY_SSIZE_T_CLEAN 1\n"; pr "#include \n"; pr "\n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "\n"; pr "#include \n"; pr "\n"; pr "#include \"methods.h\"\n"; pr "\n"; pr "static PyMethodDef methods[] = {\n"; List.iter ( fun name -> pr " {\n"; pr " \"%s\",\n" name; pr " nbd_internal_py_%s,\n" name; pr " METH_VARARGS,\n"; pr " NULL\n"; pr " },\n" ) ([ "create"; "close"; "display_version"; "alloc_aio_buffer"; "aio_buffer_is_zero" ] @ List.map fst handle_calls); pr " { NULL, NULL, 0, NULL }\n"; pr "};\n"; pr "\n"; pr "\ static struct PyModuleDef moduledef = { PyModuleDef_HEAD_INIT, \"libnbdmod\", /* m_name */ \"libnbd module\", /* m_doc */ -1, /* m_size */ methods, /* m_methods */ NULL, /* m_reload */ NULL, /* m_traverse */ NULL, /* m_clear */ NULL, /* m_free */ }; /* nbd.Error exception. */ PyObject *nbd_internal_py_Error; extern PyMODINIT_FUNC PyInit_libnbdmod (void); PyMODINIT_FUNC PyInit_libnbdmod (void) { PyObject *mod; mod = PyModule_Create (&moduledef); if (mod == NULL) return NULL; nbd_internal_py_Error = PyErr_NewException (\"nbd.Error\", NULL, NULL); if (PyModule_AddObject (mod, \"Error\", nbd_internal_py_Error) < 0) { Py_XDECREF (nbd_internal_py_Error); Py_DECREF (mod); return NULL; } return mod; } " (* Functions with a Closure parameter are special because we * have to generate wrapper functions which translate the * callbacks back to Python. *) let print_python_closure_wrapper { cbname; cbargs } = pr "/* Wrapper for %s callback. */\n" cbname; pr "static int\n"; pr "%s_wrapper " cbname; C.print_cbarg_list ~wrap:true cbargs; pr "\n"; pr "{\n"; pr " const struct user_data *data = user_data;\n"; pr " int ret = -1;\n"; pr "\n"; pr " PyGILState_STATE py_save = PyGILState_Ensure ();\n"; pr " PyObject *py_args, *py_ret;\n"; List.iter ( function | CBArrayAndLen ((UInt32 n | Extent64 n), _) | CBBytesIn (n, _) | CBMutable (Int n) -> pr " PyObject *py_%s = NULL;\n" n | _ -> () ) cbargs; pr "\n"; List.iter ( function | CBArrayAndLen (UInt32 n, len) -> pr " py_%s = PyList_New (%s);\n" n len; pr " if (!py_%s) { PyErr_PrintEx (0); goto out; }\n" n; pr " size_t i_%s;\n" n; pr " for (i_%s = 0; i_%s < %s; ++i_%s) {\n" n n len n; pr " PyObject *py_e_%s = PyLong_FromUnsignedLong (%s[i_%s]);\n" n n n; pr " if (!py_e_%s) { PyErr_PrintEx (0); goto out; }\n" n; pr " PyList_SET_ITEM (py_%s, i_%s, py_e_%s);\n" n n n; pr " }\n" | CBArrayAndLen (Extent64 n, len) -> pr " py_%s = PyList_New (%s);\n" n len; pr " if (!py_%s) { PyErr_PrintEx (0); goto out; }\n" n; pr " size_t i_%s;\n" n; pr " for (i_%s = 0; i_%s < %s; ++i_%s) {\n" n n len n; pr " PyObject *py_e_%s = Py_BuildValue (" n; pr_wrap ',' (fun () -> pr "\"KK\", %s[i_%s].length, %s[i_%s].flags" n n n n); pr ");\n"; pr " if (!py_e_%s) { PyErr_PrintEx (0); goto out; }\n" n; pr " PyList_SET_ITEM (py_%s, i_%s, py_e_%s);\n" n n n; pr " }\n" | CBBytesIn (n, len) -> pr " py_%s = nbd_internal_py_get_subview (data->view, %s, %s);\n" n n len; pr " if (!py_%s) { PyErr_PrintEx (0); goto out; }\n" n | CBInt _ | CBInt64 _ -> () | CBMutable (Int n) -> pr " py_%s = nbd_internal_py_wrap_errptr (*%s);\n" n n; pr " if (!py_%s) { PyErr_PrintEx (0); goto out; }\n" n; | CBString _ | CBUInt _ | CBUInt64 _ -> () | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs; pr "\n"; let params = List.map ( function | CBArrayAndLen ((UInt32 n | Extent64 n), _) -> "O", sprintf "py_%s" n | CBBytesIn (n, _) -> "O", sprintf "py_%s" n | CBInt n -> "i", n | CBInt64 n -> "L", n | CBMutable (Int n) -> "O", sprintf "py_%s" n | CBString n -> "s", n | CBUInt n -> "I", n | CBUInt64 n -> "K", n | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs in pr " py_args = Py_BuildValue ("; pr_wrap ',' (fun () -> pr "\"("; List.iter ( function | n, _ -> pr "%s" n ) params; pr ")\""; List.iter ( function | _, n -> pr ", %s" n ) params); pr ");\n"; pr " if (!py_args) { PyErr_PrintEx (0); goto out; }\n"; pr "\n"; pr " py_ret = PyObject_CallObject (data->fn, py_args);\n"; pr "\n"; pr " Py_DECREF (py_args);\n"; pr "\n"; pr " if (py_ret != NULL) {\n"; pr " if (PyLong_Check (py_ret))\n"; pr " ret = PyLong_AsLong (py_ret);\n"; pr " else\n"; pr " /* If it's not a long, just assume it's 0. */\n"; pr " ret = 0;\n"; pr " Py_DECREF (py_ret);\n"; pr " }\n"; pr " else {\n"; pr " /* Special case failed assertions to be fatal. */\n"; pr " if (PyErr_ExceptionMatches (PyExc_AssertionError)) {\n"; pr " PyErr_Print ();\n"; pr " abort ();\n"; pr " }\n"; pr " PyErr_PrintEx (0); /* print exception */\n"; pr " };\n"; pr "\n"; pr " out:\n"; List.iter ( function | CBArrayAndLen ((UInt32 n | Extent64 n), _) -> pr " Py_XDECREF (py_%s);\n" n | CBBytesIn (n, _) -> pr " Py_XDECREF (py_%s);\n" n | CBMutable (Int n) -> pr " if (py_%s) {\n" n; pr " PyObject *py_%s_ret = PyObject_GetAttrString (py_%s, \"value\");\n" n n; pr " *%s = PyLong_AsLong (py_%s_ret);\n" n n; pr " Py_DECREF (py_%s_ret);\n" n; pr " Py_DECREF (py_%s);\n" n; pr " }\n" | CBInt _ | CBInt64 _ | CBString _ | CBUInt _ | CBUInt64 _ -> () | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs; pr " PyGILState_Release (py_save);\n"; pr " return ret;\n"; pr "}\n"; pr "\n" (* Generate the Python binding. *) let print_python_binding name { args; optargs; ret; may_set_error } = pr "PyObject *\n"; pr "nbd_internal_py_%s (" name; pr_wrap ',' (fun () -> pr "PyObject *self, PyObject *args"); pr ")\n"; pr "{\n"; pr " PyObject *py_h;\n"; pr " struct nbd_handle *h;\n"; pr " %s ret;\n" (C.type_of_ret ret); pr " PyObject *py_ret = NULL;\n"; List.iter ( function | Bool n -> pr " int %s;\n" n | BytesIn (n, _) -> pr " Py_buffer %s = { .obj = NULL };\n" n | BytesOut (n, count) -> pr " PyObject *%s = NULL;\n" n; pr " Py_ssize_t %s;\n" count | BytesPersistIn (n, _) | BytesPersistOut (n, _) -> pr " PyObject *%s; /* Buffer-like object or nbd.Buffer */\n" n; pr " PyObject *%s_view = NULL; /* PyMemoryView of %s */\n" n n; pr " Py_buffer *py_%s; /* buffer of %s_view */\n" n n | Closure { cbname } -> pr " struct user_data *%s_user_data = NULL;\n" cbname; pr " PyObject *py_%s_fn;\n" cbname; pr " nbd_%s_callback %s = { " cbname cbname; pr_wrap ',' (fun () -> pr ".callback = %s_wrapper, .free = free_user_data" cbname); pr " };\n" | Enum (n, _) -> pr " int %s;\n" n | Extent64 _ -> assert false (* only used in extent64_closure *) | Flags (n, _) -> pr " uint32_t %s_u32;\n" n; pr " unsigned int %s; /* really uint32_t */\n" n | Fd n | Int n -> pr " int %s;\n" n | Int64 n -> pr " int64_t %s_i64;\n" n; pr " long long %s; /* really int64_t */\n" n | Path n -> pr " PyObject *py_%s = NULL;\n" n; pr " char *%s = NULL;\n" n | SizeT n -> pr " Py_ssize_t %s;\n" n | SockAddrAndLen (n, _) -> pr " PyObject *%s;\n" n; pr " struct sockaddr_storage %s_sa;\n" n; pr " socklen_t %s_len;\n" n; | String n -> pr " const char *%s;\n" n | StringList n -> pr " PyObject *py_%s;\n" n; pr " char **%s = NULL;\n" n | UInt n | UIntPtr n -> pr " unsigned int %s;\n" n | UInt32 n -> pr " uint32_t %s_u32;\n" n; pr " unsigned int %s; /* really uint32_t */\n" n | UInt64 n -> pr " uint64_t %s_u64;\n" n; pr " unsigned long long %s; /* really uint64_t */\n" n ) args; List.iter ( function | OClosure { cbname } -> pr " struct user_data *%s_user_data = NULL;\n" cbname; pr " PyObject *py_%s_fn;\n" cbname; pr " nbd_%s_callback %s = { " cbname cbname; pr_wrap ',' (fun () -> pr ".callback = %s_wrapper, .free = free_user_data" cbname); pr " };\n" | OFlags (n, _, _) -> pr " uint32_t %s_u32;\n" n; pr " unsigned int %s; /* really uint32_t */\n" n ) optargs; pr "\n"; (* Parse the Python parameters. *) let params = List.map ( function | Bool n -> "p", sprintf "&%s" n, n | BytesIn (n, _) -> "y*", sprintf "&%s" n, sprintf "%s.buf, %s.len" n n | BytesOut (n, count) -> "n", sprintf "&%s" count, sprintf "PyByteArray_AS_STRING (%s), %s" n count | BytesPersistIn (n, _) | BytesPersistOut (n, _) -> "O", sprintf "&%s" n, sprintf "py_%s->buf, py_%s->len" n n | Closure { cbname } -> "O", sprintf "&py_%s_fn" cbname, cbname | Enum (n, _) -> "i", sprintf "&%s" n, n | Extent64 _ -> assert false (* only used in extent64_closure *) | Flags (n, _) -> "I", sprintf "&%s" n, sprintf "%s_u32" n | Fd n | Int n -> "i", sprintf "&%s" n, n | Int64 n -> "L", sprintf "&%s" n, sprintf "%s_i64" n | Path n -> "O&", sprintf "PyUnicode_FSConverter, &py_%s" n, n | SizeT n -> "n", sprintf "&%s" n, sprintf "(size_t)%s" n | SockAddrAndLen (n, _) -> "O", sprintf "&%s" n, sprintf "(struct sockaddr *)&%s_sa, %s_len" n n | String n -> "s", sprintf "&%s" n, n | StringList n -> "O", sprintf "&py_%s" n, n | UInt n | UIntPtr n -> "I", sprintf "&%s" n, n | UInt32 n -> "I", sprintf "&%s" n, sprintf "%s_u32" n | UInt64 n -> "K", sprintf "&%s" n, sprintf "%s_u64" n ) args in let optparams = List.map ( function | OClosure { cbname } -> "O", sprintf "&py_%s_fn" cbname, cbname | OFlags (n, _, _) -> "I", sprintf "&%s" n, sprintf "%s_u32" n ) optargs in let params = params @ optparams in pr " if (!PyArg_ParseTuple ("; pr_wrap ',' (fun () -> pr "args, \"O"; List.iter ( function | n, _, _ -> pr "%s" n ) params; pr ":nbd_%s\", &py_h" name; List.iter ( function | _, n, _ -> pr ", %s" n ) params); pr "))\n"; pr " goto out;\n"; (* Two passes over parameters. Any 'goto err' must be in first pass. *) pr " h = get_handle (py_h);\n"; pr " if (!h) goto out;\n"; List.iter ( function | OClosure { cbname } -> pr " %s.user_data = %s_user_data = alloc_user_data ();\n" cbname cbname; pr " if (%s_user_data == NULL) goto out;\n" cbname; pr " if (py_%s_fn != Py_None) {\n" cbname; pr " if (!PyCallable_Check (py_%s_fn)) {\n" cbname; pr " PyErr_SetString (PyExc_TypeError,\n"; pr " \"callback parameter %s is not callable\");\n" cbname; pr " goto out;\n"; pr " }\n"; pr " /* Increment refcount since pointer may be saved by libnbd. */\n"; pr " Py_INCREF (py_%s_fn);\n" cbname; pr " %s_user_data->fn = py_%s_fn;\n" cbname cbname; pr " }\n"; pr " else\n"; pr " %s.callback = NULL; /* we're not going to call it */\n" cbname | OFlags (n, _, _) -> pr " %s_u32 = %s;\n" n n ) optargs; List.iter ( function | Bool _ -> () | BytesIn _ -> () | BytesOut (n, count) -> pr " %s = PyByteArray_FromStringAndSize (NULL, %s);\n" n count; pr " if (%s == NULL) goto out;\n" n | BytesPersistIn (n, _) -> pr " %s_view = nbd_internal_py_get_aio_view (%s, PyBUF_READ);\n" n n; pr " if (!%s_view) goto out;\n" n; pr " py_%s = PyMemoryView_GET_BUFFER (%s_view);\n" n n; pr " completion_user_data->view = %s_view;\n" n | BytesPersistOut (n, _) -> pr " %s_view = nbd_internal_py_get_aio_view (%s, PyBUF_WRITE);\n" n n; pr " if (!%s_view) goto out;\n" n; pr " py_%s = PyMemoryView_GET_BUFFER (%s_view);\n" n n; pr " completion_user_data->view = %s_view;\n" n | Closure { cbname } -> pr " %s.user_data = %s_user_data = alloc_user_data ();\n" cbname cbname; pr " if (%s_user_data == NULL) goto out;\n" cbname; pr " if (!PyCallable_Check (py_%s_fn)) {\n" cbname; pr " PyErr_SetString (PyExc_TypeError,\n"; pr " \"callback parameter %s is not callable\");\n" cbname; pr " goto out;\n"; pr " }\n"; pr " /* Increment refcount since pointer may be saved by libnbd. */\n"; pr " Py_INCREF (py_%s_fn);\n" cbname; pr " %s_user_data->fn = py_%s_fn;\n" cbname cbname; if cbname = "chunk" then ( pr " chunk_user_data->view = nbd_internal_py_get_aio_view (buf, PyBUF_WRITE);\n"; pr " if (!chunk_user_data->view) goto out;\n" ) | Enum _ -> () | Extent64 _ -> assert false (* only used in extent64_closure *) | Flags (n, _) -> pr " %s_u32 = %s;\n" n n | Fd _ | Int _ -> () | Int64 n -> pr " %s_i64 = %s;\n" n n | Path n -> pr " %s = PyBytes_AS_STRING (py_%s);\n" n n; pr " assert (%s != NULL);\n" n | SizeT n -> () | SockAddrAndLen (n, _) -> pr " if (nbd_internal_py_get_sockaddr (%s, &%s_sa, &%s_len) == -1)\n" n n n; pr " goto out;\n" | String _ -> () | StringList n -> pr " %s = nbd_internal_py_get_string_list (py_%s);\n" n n; pr " if (!%s) goto out;\n" n | UInt _ | UIntPtr _ -> () | UInt32 n -> pr " %s_u32 = %s;\n" n n | UInt64 n -> pr " %s_u64 = %s;\n" n n ) args; pr "\n"; (* Second pass, and call the underlying C function. *) List.iter ( function | BytesPersistOut (n, _) -> pr " if (nbd_internal_py_init_aio_buffer (%s) < 0) goto out;\n" n | _ -> () ) args; pr " Py_BEGIN_ALLOW_THREADS;\n"; pr " ret = nbd_%s (" name; pr_wrap ',' (fun () -> pr "h"; List.iter ( function | _, _, n -> pr ", %s" n ) params); pr ");\n"; pr " Py_END_ALLOW_THREADS;\n"; List.iter ( function | Closure { cbname } -> pr " %s_user_data = NULL;\n" cbname | _ -> () ) args; List.iter ( function | OClosure { cbname } -> pr " %s_user_data = NULL;\n" cbname | _ -> () ) optargs; if may_set_error then ( pr " if (ret == %s) {\n" (match C.errcode_of_ret ret with Some s -> s | None -> assert false); pr " raise_exception ();\n"; pr " goto out;\n"; pr " }\n" ); (* Convert the result back to a Python object and return it. *) let use_ret = ref true in List.iter ( function | BytesOut (n, _) -> pr " py_ret = %s;\n" n; pr " %s = NULL;\n" n; use_ret := false | _ -> () ) args; if !use_ret then ( match ret with | RBool -> pr " py_ret = ret ? Py_True : Py_False;\n"; pr " Py_INCREF (py_ret);\n" | RStaticString -> pr " py_ret = PyUnicode_FromString (ret);\n" | RErr -> pr " py_ret = Py_None;\n"; pr " Py_INCREF (py_ret);\n" | RFd | RInt | REnum _ | RFlags _ | RSizeT | RUInt | RUIntPtr -> pr " py_ret = PyLong_FromLong (ret);\n" | RInt64 | RUInt64 | RCookie -> pr " py_ret = PyLong_FromLongLong (ret);\n" | RString -> pr " py_ret = PyUnicode_FromString (ret);\n"; pr " free (ret);\n" ); pr "\n"; pr " out:\n"; List.iter ( function | Bool _ -> () | BytesIn (n, _) -> pr " if (%s.obj)\n" n; pr " PyBuffer_Release (&%s);\n" n | BytesOut (n, _) -> pr " Py_XDECREF (%s);\n" n | BytesPersistIn (n, _) | BytesPersistOut (n, _) -> () | Closure { cbname } -> pr " free_user_data (%s_user_data);\n" cbname | Enum _ -> () | Extent64 _ -> assert false (* only used in extent64_closure *) | Flags _ -> () | Fd _ | Int _ -> () | Int64 _ -> () | Path n -> pr " Py_XDECREF (py_%s);\n" n | SizeT _ -> () | SockAddrAndLen _ -> () | String n -> () | StringList n -> pr " nbd_internal_py_free_string_list (%s);\n" n | UInt _ -> () | UInt32 _ -> () | UInt64 _ -> () | UIntPtr _ -> () ) args; List.iter ( function | OClosure { cbname } -> pr " free_user_data (%s_user_data);\n" cbname | OFlags _ -> () ) optargs; pr " return py_ret;\n"; pr "}\n"; pr "\n" let generate_python_methods_c () = generate_header CStyle; pr "#define PY_SSIZE_T_CLEAN 1\n"; pr "#include \n"; pr "\n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "\n"; pr "#include \n"; pr "\n"; pr "#include \n"; pr "\n"; pr "/* This is passed to *_wrapper as the user_data pointer\n"; pr " * and freed in the free_user_data function below.\n"; pr " */\n"; pr "struct user_data {\n"; pr " PyObject *fn; /* Optional pointer to Python function. */\n"; pr " PyObject *view; /* Optional PyMemoryView of persistent buffer. */\n"; pr "};\n"; pr "\n"; pr "static struct user_data *\n"; pr "alloc_user_data (void)\n"; pr "{\n"; pr " struct user_data *data = calloc (1, sizeof *data);\n"; pr " if (data == NULL) {\n"; pr " PyErr_NoMemory ();\n"; pr " return NULL;\n"; pr " }\n"; pr " return data;\n"; pr "}\n"; pr "\n"; pr "static void\n"; pr "free_user_data (void *user_data)\n"; pr "{\n"; pr " struct user_data *data = user_data;\n"; pr "\n"; pr " if (data) {\n"; pr " PyGILState_STATE py_save = PyGILState_Ensure ();\n"; pr " Py_XDECREF (data->fn);\n"; pr " Py_XDECREF (data->view);\n"; pr " PyGILState_Release (py_save);\n"; pr " free (data);\n"; pr " }\n"; pr "}\n"; pr "\n"; List.iter print_python_closure_wrapper all_closures; List.iter ( fun (name, fn) -> print_python_binding name fn ) handle_calls let py_fn_rex = Str.regexp "L" let py_const_rex = Str.regexp "C" let generate_python_nbd_py () = generate_header HashStyle; pr "\ ''' Python bindings for libnbd import nbd h = nbd.NBD() h.connect_tcp(\"localhost\", \"nbd\") buf = h.pread(512, 0) Read the libnbd(3) man page to find out how to use the API. ''' import contextlib import libnbdmod # Re-export Error exception as nbd.Error, adding some methods. from libnbdmod import Error Error.__doc__ = ''' Exception thrown when the underlying libnbd call fails. This exception has three properties to query the error. Use the .string property to return a printable string containing the error message. Use the .errnum property for the associated numeric error value (which may be 0 if the error did not correspond to a system call failure), or the .errno property to return a string containing the Python errno name if one is known (which may be None if the numeric value does not correspond to a known errno name). ''' Error.string = property(lambda self: self.args[0]) def _errno(self): import errno try: return errno.errorcode[self.args[1]] except KeyError: return None Error.errno = property(_errno) Error.errnum = property(lambda self: self.args[1]) def _str(self): if self.errno: return \"%%s (%%s)\" %% (self.string, self.errno) else: return \"%%s\" %% self.string Error.__str__ = _str class ClosedHandle(ValueError): '''This exception is thrown when any method is called on an nbd handle after you have called h.close() on the same handle.''' pass @contextlib.contextmanager def nbd(): ''' This is a context manager function. Python will close the handle automatically even if the body throws an exception: with nbd.nbd() as h: # use the handle 'h' ''' h = NBD() yield h h.close() "; List.iter ( fun { enum_prefix; enums } -> List.iter ( fun (enum, i) -> let enum = sprintf "%s_%s" enum_prefix enum in pr "%s = %d\n" enum i ) enums; pr "\n" ) all_enums; List.iter ( fun { flag_prefix; flags } -> let mask = ref 0 in List.iter ( fun (flag, i) -> let flag = sprintf "%s_%s" flag_prefix flag in pr "%s = 0x%02x\n" flag i; mask := !mask lor i ) flags; pr "%s_MASK = 0x%02x\n" flag_prefix !mask; pr "\n" ) all_flags; List.iter (fun (n, i) -> pr "%s = %d\n" n i) constants; List.iter ( fun (ns, ctxts) -> let ns_upper = String.uppercase_ascii ns in pr "NAMESPACE_%s = \"%s:\"\n" ns_upper ns; List.iter ( fun (ctxt, consts) -> let ctxt_macro = macro_name ctxt in let ctxt_upper = String.uppercase_ascii ctxt_macro in pr "%s = \"%s:%s\"\n" (sprintf "CONTEXT_%s_%s" ns_upper ctxt_upper) ns ctxt; List.iter (fun (n, i) -> pr "%s = %d\n" n i) consts ) ctxts; ) metadata_namespaces; pr "\ class Buffer(object): '''Asynchronous I/O persistent buffer''' def __init__(self, len): '''Allocate an uninitialized AIO buffer used for nbd.aio_pread.''' self._o = libnbdmod.alloc_aio_buffer(len) @classmethod def from_buffer(cls, buf): '''Create an AIO buffer that shares an existing buffer-like object. Because the buffer is shared, changes to the original are visible to nbd.aio_pwrite, and changes in nbd.aio_pread are visible to the original. ''' self = cls(0) # Ensure that buf is already buffer-like with memoryview(buf): self._o = buf self._init = True return self @classmethod def from_bytearray(cls, ba): '''Create an AIO buffer from a bytearray or other buffer-like object. If ba is not a buffer, it is tried as the parameter to the bytearray constructor. Otherwise, ba is copied. Either way, the resulting AIO buffer is independent from the original. ''' return cls.from_buffer(bytearray(ba)) def to_buffer(self): '''Return a shared view of the AIO buffer contents. This exposes the underlying buffer; changes to the buffer are visible to nbd.aio_pwrite, and changes from nbd.aio_pread are visible in the buffer. ''' if not hasattr(self, '_init'): self._o = bytearray(len(self._o)) self._init = True return self._o def to_bytearray(self): '''Copy an AIO buffer into a bytearray. This copies the contents of an AIO buffer to a new bytearray, which remains independent from the original. ''' if not hasattr(self, '_init'): return bytearray(len(self._o)) return bytearray(self._o) def size(self): '''Return the size of an AIO buffer.''' return len(self) def __len__(self): '''Return the size of an AIO buffer.''' return len(self._o) def is_zero(self, offset=0, size=-1): '''Returns true if and only if all bytes in the buffer are zeroes. Note that although a freshly allocated buffer is uninitialized, this will report it as all zeroes, as it will be force-initialized to zero before any code that can access the buffer's contents. By default this tests the whole buffer, but you can restrict the test to a sub-range of the buffer using the optional offset and size parameters. If size = -1 then we check from offset to the end of the buffer. If size = 0, the function always returns true. If size > 0, we check the interval [offset..offset+size-1]. ''' return libnbdmod.aio_buffer_is_zero(self._o, offset, size, hasattr(self, '_init')) class NBD(object): '''NBD handle''' def __init__(self): '''Create a new NBD handle.''' self._o = libnbdmod.create() def __del__(self): '''Close the NBD handle and underlying connection.''' if self._o: libnbdmod.close(self._o) self._o = None def _check_not_closed(self): if not self._o: raise ClosedHandle(\"libnbd: method called on closed handle\") def close(self): '''Explicitly close the NBD handle and underlying connection. The handle is closed implicitly when its reference count goes to zero (eg. when it goes out of scope or the program ends). This call is only needed if you want to force the handle to close now. After calling this, the program must not call any method on the handle (except the implicit call to __del__ which happens when the final reference is cleaned up). ''' self._check_not_closed() libnbdmod.close(self._o) self._o = None "; List.iter ( fun (name, { args; optargs; shortdesc; longdesc }) -> let args = List.map ( function | Bool n -> n, None | BytesIn (n, _) -> n, None | BytesOut (_, count) -> count, None | BytesPersistIn (n, _) -> n, None | BytesPersistOut (n, _) -> n, None | Closure { cbname } -> cbname, None | Enum (n, _) -> n, None | Extent64 _ -> assert false (* only used in extent64_closure *) | Flags (n, _) -> n, None | Fd n | Int n -> n, None | Int64 n -> n, None | Path n -> n, None | SizeT n -> n, None | SockAddrAndLen (n, _) -> n, None | String n -> n, None | StringList n -> n, None | UInt n -> n, None | UInt32 n -> n, None | UInt64 n -> n, None | UIntPtr n -> n, None ) args in let optargs = List.map ( function | OClosure { cbname } -> cbname, Some "None" | OFlags (n, _, _) -> n, Some "0" ) optargs in let args = args @ optargs in pr " def %s(" name; pr_wrap ',' (fun () -> pr "self"; List.iter ( function | n, None -> pr ", %s" n | n, Some default -> pr ", %s=%s" n default ) args); pr "):\n"; let longdesc = Str.global_replace py_fn_rex "C" longdesc in let longdesc = Str.global_replace py_const_rex "C<\\1>" longdesc in let longdesc = pod2text longdesc in pr " u'''▶ %s\n\n%s'''\n" shortdesc (String.concat "\n" longdesc); pr " self._check_not_closed()\n"; pr " return libnbdmod.%s(" name; pr_wrap ',' (fun () -> pr "self._o"; List.iter ( function | n, _ -> pr ", %s" n ) args); pr ")\n"; pr "\n" ) handle_calls; (* For nbdsh. *) pr "\ package_name = NBD().get_package_name() __version__ = NBD().get_version() if __name__ == \"__main__\": import nbdsh nbdsh.shell() " libnbd-1.20.3/generator/OCaml.mli0000644000175000017500000000173314525371754012215 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generator * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) val generate_ocaml_nbd_mli : unit -> unit val generate_ocaml_nbd_ml : unit -> unit val generate_ocaml_nbd_c : unit -> unit libnbd-1.20.3/generator/OCaml.ml0000644000175000017500000007170614600007160012030 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generator * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* OCaml bindings. * * Note we always pass the parameters as: optargs, handle, args. *) open Printf open API open Utils (* String representation of args and return value. *) let rec ocaml_fundecl_to_string args optargs ret = let optargs = List.map ocaml_optarg_to_string optargs in let args = List.map ocaml_arg_to_string args in let ret = ocaml_ret_to_string ret in String.concat " -> " (optargs @ ["t"] @ args @ [ret]) (* String representation of a single OCaml arg. *) and ocaml_arg_to_string = function | Bool _ -> "bool" | BytesIn _ -> "bytes" | BytesPersistIn _ -> "Buffer.t" | BytesOut _ -> "bytes" | BytesPersistOut _ -> "Buffer.t" | Closure { cbargs } -> sprintf "(%s)" (ocaml_closuredecl_to_string cbargs) | Enum (_, { enum_prefix }) -> sprintf "%s.t" enum_prefix | Extent64 _ -> "extent" | Fd _ -> "Unix.file_descr" | Flags (_, { flag_prefix }) -> sprintf "%s.t list" flag_prefix | Int _ -> "int" | Int64 _ -> "int64" | Path _ -> "string" | SockAddrAndLen _ -> "Unix.sockaddr" | SizeT _ -> "int" (* OCaml int type is always sufficient for counting *) | String _ -> "string" | StringList _ -> "string list" | UInt _ | UIntPtr _ -> "int" | UInt32 _ -> "int64 (* uint32_t *)" (* widening due to lack of uint32_t in OCaml *) | UInt64 _ -> "int64" and ocaml_ret_to_string = function | RBool -> "bool" | RStaticString -> "string" | RErr -> "unit" | RFd -> "Unix.file_descr" | RInt -> "int" | RInt64 -> "int64" | RCookie -> "cookie" | RSizeT -> "int" | RString -> "string" | RUInt | RUIntPtr -> "int" | RUInt64 -> "int64" | REnum { enum_prefix } -> enum_prefix ^ ".t" | RFlags { flag_prefix } -> flag_prefix ^ ".t list" and ocaml_optarg_to_string = function | OClosure { cbname; cbargs } -> sprintf "?%s:(%s)" cbname (ocaml_closuredecl_to_string cbargs) | OFlags (n, { flag_prefix }, _) -> sprintf "?%s:%s.t list" n flag_prefix and ocaml_closuredecl_to_string cbargs = let cbargs = List.map ocaml_cbarg_to_string cbargs in String.concat " -> " (cbargs @ ["int"]) and ocaml_cbarg_to_string = function | CBArrayAndLen (arg, _) -> sprintf "%s array" (ocaml_arg_to_string arg) | CBBytesIn _ -> "bytes" | CBInt _ -> "int" | CBInt64 _ -> "int64" | CBMutable arg -> sprintf "%s ref" (ocaml_arg_to_string arg) | CBString _ -> "string" | CBUInt _ -> "int" | CBUInt64 _ -> "int64" let ocaml_name_of_arg = function | Bool n -> n | BytesIn (n, len) -> n | BytesOut (n, len) -> n | BytesPersistIn (n, len) -> n | BytesPersistOut (n, len) -> n | Closure { cbname } -> cbname | Enum (n, _) -> n | Extent64 _ -> assert false (* only used in extent64_closure *) | Fd n -> n | Flags (n, _) -> n | Int n -> n | Int64 n -> n | Path n -> n | SizeT n -> n | SockAddrAndLen (n, len) -> n | String n -> n | StringList n -> n | UInt n -> n | UInt32 n -> n | UInt64 n -> n | UIntPtr n -> n let ocaml_name_of_optarg = function | OClosure { cbname } -> cbname | OFlags (n, _, _) -> n let num_params args optargs = List.length optargs + 1 (* handle *) + List.length args let generate_ocaml_nbd_mli () = generate_header OCamlStyle; pr "\ (** OCaml bindings for libnbd. For full documentation see libnbd-ocaml(3) and libnbd(3). For examples written in OCaml see the libnbd source code [ocaml/examples] subdirectory. *) exception Error of string * Unix.error option (** Exception thrown when an API call fails. The string is the error message, and the int is the {!Unix.error} (if available). *) exception Closed of string (** Exception thrown if you call a closed handle. *) type cookie = int64 type extent = int64 * int64 (** Length and flags of an extent in {!block_status_64} callback. *) "; List.iter ( fun { enum_prefix; enums } -> pr "module %s : sig\n" enum_prefix; pr " type t =\n"; List.iter ( fun (enum, _) -> pr " | %s\n" enum ) enums; pr " | UNKNOWN of int\n"; pr "end\n"; pr "\n" ) all_enums; List.iter ( fun { flag_prefix; flags } -> pr "module %s : sig\n" flag_prefix; pr " type t =\n"; List.iter ( fun (flag, _) -> pr " | %s\n" flag ) flags; pr " | UNKNOWN of int\n"; pr "\n"; pr " val mask : t list\n"; pr "end\n"; pr "\n" ) all_flags; List.iter ( fun (n, _) -> pr "val %s : int32\n" (String.lowercase_ascii n) ) constants; List.iter ( fun (ns, ctxts) -> pr "val namespace_%s : string\n" ns; List.iter ( fun (ctxt, consts) -> pr "val context_%s_%s : string\n" ns (macro_name ctxt); List.iter (fun (n, _) -> pr "val %s : int32\n" (String.lowercase_ascii n) ) consts ) ctxts; ) metadata_namespaces; pr "\n"; pr "\ module Buffer : sig type t = (char, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t (** A buffer that persists across calls, used in {!aio_pread}, {!aio_pwrite} and similar. In libnbd ≤ 1.18 this was a specially implemented type. This was inefficient as zero copy was not possible. In libnbd ≥ 1.20 this is just an alias for a {!Bigarray}, so you can use functions from {!Bigarray.Array1} directly if you prefer. This also allows zero copy. This type is compatible with the {{:https://v3.ocaml.org/p/bigstring/latest}[bigstring]} and {{:https://v3.ocaml.org/p/bigstringaf/latest}[bigstringaf]} libraries. *) val alloc : int -> t (** Allocate an uninitialized buffer. The parameter is the size in bytes. In libnbd ≥ 1.20 this is an alias for {!Bigarray.Array1.create}. *) val to_bytes : t -> bytes (** Copy buffer to an OCaml [bytes] object. In libnbd ≥ 1.20 you can read from the bigarray directly to avoid copying if you want. *) val to_string : t -> string (** Same as {!to_bytes} but returns a [string] instead. *) val of_bytes : bytes -> t (** Copy an OCaml [bytes] object to a newly allocated buffer. In libnbd ≥ 1.20 you can write to the bigarray directly to avoid copying if you want. *) val of_string : string -> t (** Same as {!of_bytes} but takes a [string] instead. *) val size : t -> int (** Return the size of the buffer. In libnbd ≥ 1.20 this is an alias for {!Bigarray.Array1.dim}. *) end (** Persistent buffer used in AIO calls. *) val errno_of_unix_error : Unix.error -> int (** Return the raw C errno corresponding to a {!Unix.error}. This can be used in callbacks to update the [int ref] parameter. *) type t (** The handle. *) val create : unit -> t (** Create a new handle. *) val close : t -> unit (** Close a handle. Handles can also be closed by the garbage collector when they become unreachable. This call is used only if you want to force the handle to close now and reclaim resources immediately. *) val with_handle : (t -> 'a) -> 'a (** Wrapper around {!create}. It calls the function parameter with a newly created handle, and ensures that {!close} is always called even if the function throws an exception. Use this when it is essential that the handle is closed in order to free up external resources in a timely manner; for example if running the server as a subprocess and you want to ensure that the subprocess is always killed; or if you need to disconnect from the server before continuing with another operation. *) "; List.iter ( fun (name, { args; optargs; ret; shortdesc; longdesc }) -> pr "val %s : %s\n" name (ocaml_fundecl_to_string args optargs ret); pr "(** [NBD.%s t" name; List.iter (fun arg -> arg |> ocaml_name_of_optarg |> pr " ?%s") optargs; List.iter (fun arg -> arg |> ocaml_name_of_arg |> pr " %s") args; pr "]\n"; pr "\n"; pr " %s\n" shortdesc; pr "\n"; pr "%s" (String.concat "\n" (pod2text longdesc)); pr "*)\n"; pr "\n"; ) handle_calls let generate_ocaml_nbd_ml () = generate_header OCamlStyle; pr "\ exception Error of string * Unix.error option exception Closed of string type cookie = int64 type extent = int64 * int64 (* Give the exceptions names so that they can be raised from the C code. *) let () = Callback.register_exception \"nbd_internal_ocaml_error\" (Error (\"\", None)); Callback.register_exception \"nbd_internal_ocaml_closed\" (Closed \"\") "; List.iter ( fun { enum_prefix; enums } -> pr "module %s = struct\n" enum_prefix; pr " type t =\n"; List.iter ( fun (enum, _) -> pr " | %s\n" enum ) enums; pr " | UNKNOWN of int\n"; pr "end\n"; pr "\n" ) all_enums; List.iter ( fun { flag_prefix; flags } -> pr "module %s = struct\n" flag_prefix; pr " type t =\n"; List.iter ( fun (flag, _) -> pr " | %s\n" flag ) flags; pr " | UNKNOWN of int\n"; pr "\n"; pr " let mask = [\n"; List.iter ( fun (flag, _) -> pr " %s;\n" flag ) flags; pr " ]\n"; pr "end\n"; pr "\n" ) all_flags; List.iter ( fun (n, i) -> pr "let %s = %d_l\n" (String.lowercase_ascii n) i ) constants; List.iter ( fun (ns, ctxts) -> pr "let namespace_%s = \"%s:\"\n" ns ns; List.iter ( fun (ctxt, consts) -> pr "let context_%s_%s = \"%s:%s\"\n" ns (macro_name ctxt) ns ctxt; List.iter (fun (n, i) -> pr "let %s = %d_l\n" (String.lowercase_ascii n) i ) consts ) ctxts; ) metadata_namespaces; pr "\n"; pr "\ module Buffer = struct type t = (char, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t let alloc = Bigarray.Array1.create Bigarray.Char Bigarray.c_layout let size = Bigarray.Array1.dim external to_bytes : t -> bytes = \"nbd_internal_ocaml_buffer_to_bytes\" external to_string : t -> string = \"nbd_internal_ocaml_buffer_to_bytes\" external _of_bytes : bytes -> t -> unit = \"nbd_internal_ocaml_buffer_of_bytes\" external _of_string : string -> t -> unit = \"nbd_internal_ocaml_buffer_of_bytes\" let of_bytes b = let buf = alloc (Bytes.length b) in _of_bytes b buf; buf let of_string s = let buf = alloc (String.length s) in _of_string s buf; buf end external errno_of_unix_error : Unix.error -> int = \"nbd_internal_code_of_unix_error\" [@@noalloc] type t external _create : unit -> t = \"nbd_internal_ocaml_nbd_create\" external close : t -> unit = \"nbd_internal_ocaml_nbd_close\" let create () = let nbd = _create () in Gc.finalise close nbd; nbd let with_handle f = let nbd = create () in try let r = f nbd in close nbd; r with exn -> close nbd; raise exn "; List.iter ( fun (name, { args; optargs; ret }) -> pr "external %s : %s\n" name (ocaml_fundecl_to_string args optargs ret); pr " = "; (* In OCaml, argument lists longer than 5 elements require * special handling in the C bindings. *) if num_params args optargs > 5 then pr "\"nbd_internal_ocaml_nbd_%s_byte\" " name; pr "\"nbd_internal_ocaml_nbd_%s\"\n" name ) handle_calls let print_ocaml_enum_val { enum_prefix; enums } = pr "/* Convert OCaml %s.t to int. */\n" enum_prefix; pr "static int\n"; pr "%s_val (value v)\n" enum_prefix; pr "{\n"; pr " /* NB: No allocation in this function, don't need to use\n"; pr " * CAML* wrappers.\n"; pr " */\n"; pr " int r = 0;\n"; pr "\n"; pr " if (Is_long (v)) {\n"; pr " /* Int_val (v) is the index of the enum in the type\n"; pr " * (eg. v = 0 => enum = %s.%s).\n" enum_prefix (fst (List.hd enums)); pr " * Convert it to the C representation.\n"; pr " */\n"; pr " switch (Int_val (v)) {\n"; List.iteri ( fun i (enum, _) -> pr " case %d: r = LIBNBD_%s_%s; break;\n" i enum_prefix enum ) enums; pr " default: abort ();\n"; pr " }\n"; pr " }\n"; pr " else\n"; pr " r = Int_val (Field (v, 0)); /* UNKNOWN of int */\n"; pr "\n"; pr " return r;\n"; pr "}\n"; pr "\n"; if List.exists ( function | _, { ret = REnum { enum_prefix = prefix } } -> (prefix = enum_prefix) | _ -> false ) handle_calls then ( pr "/* Convert int to OCaml %s.t. */\n" enum_prefix; pr "static value\n"; pr "Val_%s (int i)\n" enum_prefix; pr "{\n"; pr " CAMLparam0 ();\n"; pr " CAMLlocal1 (rv);\n"; pr "\n"; pr " switch (i) {\n"; List.iteri ( fun i (enum, _) -> pr " case LIBNBD_%s_%s: rv = Val_int (%d); break;\n" enum_prefix enum i ) enums; pr " default:\n"; pr " rv = caml_alloc (1, 0); /* UNKNOWN of int */\n"; pr " Store_field (rv, 0, Val_int (i));\n"; pr " }\n"; pr "\n"; pr " CAMLreturn (rv);\n"; pr "}\n"; pr "\n" ) let print_ocaml_flag_val { flag_prefix; flags } = pr "/* Convert OCaml %s.t list to uint32_t bitmask. */\n" flag_prefix; pr "static uint32_t\n"; pr "%s_val (value v)\n" flag_prefix; pr "{\n"; pr " /* NB: No allocation in this function, don't need to use\n"; pr " * CAML* wrappers.\n"; pr " */\n"; pr " value i;\n"; pr " unsigned bit;\n"; pr " uint32_t r = 0;\n"; pr "\n"; pr " for (; v != Val_emptylist; v = Field (v, 1)) {\n"; pr " i = Field (v, 0);\n"; pr " /* i contains either the index of the flag in the type,\n"; pr " * or UNKNOWN of int containing the bit position.\n"; pr " * (eg. i = 0 => flag = %s.%s).\n" flag_prefix (fst (List.hd flags)); pr " * Convert it to the C representation.\n"; pr " */\n"; pr " if (Is_long (i)) {\n"; pr " switch (Int_val (i)) {\n"; List.iteri ( fun i (flag, _) -> pr " case %d: r |= LIBNBD_%s_%s; break;\n" i flag_prefix flag ) flags; pr " default: abort ();\n"; pr " }\n"; pr " }\n"; pr " else {\n"; pr " bit = Int_val (Field (i, 0)); /* UNKNOWN of int */\n"; pr " if (bit > 31)\n"; pr " caml_invalid_argument (\"bitmask value out of range\");\n"; pr " else\n"; pr " r |= 1u << bit;\n"; pr " }\n"; pr " }\n"; pr "\n"; pr " return r;\n"; pr "}\n"; pr "\n"; if List.exists ( function | _, { ret = RFlags { flag_prefix = prefix } } -> (prefix = flag_prefix) | _ -> false ) handle_calls then ( pr "/* Convert uint32_t bitmask to OCaml %s.t list. */\n" flag_prefix; pr "static value\n"; pr "Val_%s (unsigned flags)\n" flag_prefix; pr "{\n"; pr " CAMLparam0 ();\n"; pr " CAMLlocal3 (cdr, rv, v);\n"; pr " int i;\n"; pr "\n"; pr " rv = Val_emptylist;\n"; pr " for (i = 31; i >= 0; i--) {\n"; pr " if (flags & (1 << i)) {\n"; pr " switch (1 << i) {\n"; List.iteri ( fun i (flag, _) -> pr " case LIBNBD_%s_%s: v = Val_int (%d); break;\n" flag_prefix flag i; ) flags; pr " default:\n"; pr " v = caml_alloc (1, 0); /* UNKNOWN of int */\n"; pr " Store_field (v, 0, Val_int (i));\n"; pr " }\n"; pr "\n"; pr " cdr = rv;\n"; pr " rv = caml_alloc (2, 0);\n"; pr " Store_field (rv, 0, v);\n"; pr " Store_field (rv, 1, cdr);\n"; pr " }\n"; pr " }\n"; pr "\n"; pr " CAMLreturn (rv);\n"; pr "}\n"; pr "\n" ) let print_ocaml_closure_wrapper { cbname; cbargs } = let argnames = List.map ( function | CBArrayAndLen ((UInt32 n | Extent64 n), _) | CBBytesIn (n, _) | CBInt n | CBInt64 n | CBMutable (Int n) | CBString n | CBUInt n | CBUInt64 n -> n ^ "v" | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs in pr "/* Wrapper for %s callback. */\n" cbname; pr "static int\n"; pr "%s_wrapper_locked " cbname; C.print_cbarg_list ~wrap:true cbargs; pr "\n"; pr "{\n"; pr " CAMLparam0 ();\n"; assert (List.length argnames <= 5); pr " CAMLlocal%d (%s);\n" (List.length argnames) (String.concat ", " argnames); pr " CAMLlocal2 (exn, rv);\n"; pr " const struct user_data *data = user_data;\n"; pr " int r;\n"; pr " value args[%d];\n" (List.length argnames); pr "\n"; List.iter ( function | CBArrayAndLen (UInt32 n, count) -> pr " %sv = " n; let fncol = output_column () in let indent = spaces fncol in pr "nbd_internal_ocaml_alloc_i64_from_u32_array (\n"; pr "%s %s,\n" indent n; pr "%s %s\n" indent count; pr "%s);\n" indent | CBArrayAndLen (Extent64 n, count) -> pr " %sv = " n; let fncol = output_column () in let indent = spaces fncol in pr "nbd_internal_ocaml_alloc_extent64_array (\n"; pr "%s %s,\n" indent n; pr "%s %s\n" indent count; pr "%s);\n" indent | CBBytesIn (n, len) -> pr " %sv = caml_alloc_initialized_string (%s, %s);\n" n len n | CBInt n | CBUInt n -> pr " %sv = Val_int (%s);\n" n n | CBInt64 n -> pr " %sv = caml_copy_int64 (%s);\n" n n | CBString n -> pr " %sv = caml_copy_string (%s);\n" n n | CBUInt64 n -> pr " %sv = caml_copy_int64 (%s);\n" n n | CBMutable (Int n) -> pr " %sv = caml_alloc_tuple (1);\n" n; pr " Store_field (%sv, 0, Val_int (*%s));\n" n n | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs; List.iteri (fun i n -> pr " args[%d] = %s;\n" i n) argnames; pr " rv = caml_callbackN_exn (data->fnv, %d, args);\n" (List.length argnames); List.iter ( function | CBArrayAndLen ((UInt32 _ | Extent64 _), _) | CBBytesIn _ | CBInt _ | CBInt64 _ | CBString _ | CBUInt _ | CBUInt64 _ -> () | CBMutable (Int n) -> pr " *%s = Int_val (Field (%sv, 0));\n" n n | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs; pr " if (Is_exception_result (rv)) {\n"; pr " nbd_internal_ocaml_exception_in_wrapper (\"%s\", rv);\n" cbname; pr " CAMLreturnT (int, -1);\n"; pr " }\n"; pr "\n"; pr " r = Int_val (rv);\n"; pr " assert (r >= 0);\n"; pr " CAMLreturnT (int, r);\n"; pr "}\n"; pr "\n"; pr "static int\n"; pr "%s_wrapper " cbname; C.print_cbarg_list ~wrap:true cbargs; pr "\n"; pr "{\n"; pr " int ret = 0;\n"; pr "\n"; pr " caml_leave_blocking_section ();\n"; pr " ret = %s_wrapper_locked " cbname; C.print_cbarg_list ~wrap:true ~types:false cbargs; pr ";\n"; pr " caml_enter_blocking_section ();\n"; pr " return ret;\n"; pr "}\n"; pr "\n" let print_ocaml_binding (name, { args; optargs; ret }) = (* Get the names of all the value arguments including the handle. *) let values = List.map ocaml_name_of_optarg optargs @ ["h"] @ List.map ocaml_name_of_arg args in let values = List.map (fun v -> v ^ "v") values in (* Create the binding. *) pr "value\n"; let params = List.map (sprintf "value %s") values in let params = String.concat ", " params in pr "nbd_internal_ocaml_nbd_%s (" name; pr_wrap ',' (fun () -> pr "%s" params); pr ")\n"; pr "{\n"; (* CAMLparam can only take up to 5 parameters. Further parameters * have to be passed in groups of 5 to CAMLxparam calls. *) (match values with | p1 :: p2 :: p3 :: p4 :: p5 :: rest -> pr " CAMLparam5 (%s);\n" (String.concat ", " [p1; p2; p3; p4; p5]); let rec loop = function | [] -> () | p1 :: p2 :: p3 :: p4 :: p5 :: rest -> pr " CAMLxparam5 (%s);\n" (String.concat ", " [p1; p2; p3; p4; p5]); loop rest | rest -> pr " CAMLxparam%d (%s);\n" (List.length rest) (String.concat ", " rest) in loop rest | ps -> pr " CAMLparam%d (%s);\n" (List.length ps) (String.concat ", " ps) ); pr " CAMLlocal1 (rv);\n"; pr "\n"; pr " struct nbd_handle *h = NBD_val (hv);\n"; pr " if (h == NULL)\n"; pr " nbd_internal_ocaml_raise_closed (\n"; pr " \"NBD.%s\"\n" name; pr " );\n"; pr "\n"; List.iter ( function | OClosure { cbname } -> pr " nbd_%s_callback %s_callback = {0};\n" cbname cbname; pr " struct user_data *%s_user_data = alloc_user_data ();\n" cbname; pr " if (%sv != Val_int (0)) { /* Some closure */\n" cbname; pr " /* The function may save a reference to the closure, so we\n"; pr " * must treat it as a possible GC root.\n"; pr " */\n"; pr " %s_user_data->fnv = Field (%sv, 0);\n" cbname cbname; pr " caml_register_generational_global_root (&%s_user_data->fnv);\n" cbname; pr " %s_callback.callback = %s_wrapper;\n" cbname cbname; pr " }\n"; pr " %s_callback.user_data = %s_user_data;\n" cbname cbname; pr " %s_callback.free = free_user_data;\n" cbname; | OFlags (n, { flag_prefix }, _) -> pr " uint32_t %s;\n" n; pr " if (%sv != Val_int (0)) /* Some [ list of %s.t ] */\n" n flag_prefix; pr " %s = %s_val (Field (%sv, 0));\n" n flag_prefix n; pr " else /* None */\n"; pr " %s = 0;\n" n ) optargs; List.iter ( function | Bool n -> pr " bool %s = Bool_val (%sv);\n" n n | BytesIn (n, count) -> pr " const void *%s = Bytes_val (%sv);\n" n n; pr " size_t %s = caml_string_length (%sv);\n" count n | BytesPersistIn (n, count) -> pr " struct caml_ba_array *%s_ba = Caml_ba_array_val (%sv);\n" n n; pr " const void *%s = (const void *) %s_ba->data;\n" n n; pr " size_t %s = %s_ba->dim[0];\n" count n | BytesOut (n, count) -> pr " void *%s = Bytes_val (%sv);\n" n n; pr " size_t %s = caml_string_length (%sv);\n" count n | BytesPersistOut (n, count) -> pr " struct caml_ba_array *%s_ba = Caml_ba_array_val (%sv);\n" n n; pr " void *%s = (void *) %s_ba->data;\n" n n; pr " size_t %s = %s_ba->dim[0];\n" count n | Closure { cbname } -> pr " nbd_%s_callback %s_callback;\n" cbname cbname; pr " struct user_data *%s_user_data = alloc_user_data ();\n" cbname; pr " /* The function may save a reference to the closure, so we\n"; pr " * must treat it as a possible GC root.\n"; pr " */\n"; pr " %s_user_data->fnv = %sv;\n" cbname cbname; pr " caml_register_generational_global_root (&%s_user_data->fnv);\n" cbname; pr " %s_callback.callback = %s_wrapper;\n" cbname cbname; pr " %s_callback.user_data = %s_user_data;\n" cbname cbname; pr " %s_callback.free = free_user_data;\n" cbname | Enum (n, { enum_prefix }) -> pr " int %s = %s_val (%sv);\n" n enum_prefix n | Extent64 _ -> assert false (* only used in extent64_closure *) | Fd n -> pr " /* OCaml Unix.file_descr is just an int, at least on Unix. */\n"; pr " int %s = Int_val (%sv);\n" n n | Flags (n, { flag_prefix }) -> pr " uint32_t %s = %s_val (%sv);\n" n flag_prefix n | Int n -> pr " int %s = Int_val (%sv);\n" n n | Int64 n -> pr " int64_t %s = Int64_val (%sv);\n" n n | Path n | String n -> pr " const char *%s = String_val (%sv);\n" n n | SizeT n -> pr " size_t %s = Int_val (%sv);\n" n n | SockAddrAndLen (n, len) -> pr " struct sockaddr_storage %s_storage;\n" n; pr " struct sockaddr *%s = (struct sockaddr *)&%s_storage;\n" n n; pr " socklen_t %s;\n" len; pr " nbd_internal_unix_sockaddr_to_sa (%sv, &%s_storage, &%s);\n" n n len | StringList n -> pr " char **%s = (char **)nbd_internal_ocaml_string_list (%sv);\n" n n | UInt n | UIntPtr n -> pr " unsigned %s = Int_val (%sv);\n" n n | UInt32 n -> pr " int64_t %s64 = Int64_val (%sv);\n" n n; pr " if (%s64 < 0 || (uint64_t)%s64 > UINT32_MAX)\n" n n; pr " caml_invalid_argument (\"'%s' out of range\");\n" n; pr " uint32_t %s = (uint32_t)%s64;\n" n n; | UInt64 n -> pr " uint64_t %s = Int64_val (%sv);\n" n n ) args; (* If there is a BytesPersistIn/Out parameter then we need to * register it as a global root and save that into the * completion_callback.user_data so the root is removed on * command completion. *) List.iter ( function | BytesPersistIn (n, _) | BytesPersistOut (n, _) -> pr " completion_user_data->bufv = %sv;\n" n; pr " caml_register_generational_global_root (&completion_user_data->bufv);\n" | _ -> () ) args; let ret_c_type = C.type_of_ret ret and errcode = C.errcode_of_ret ret in pr " %s r;\n" ret_c_type; pr "\n"; pr " caml_enter_blocking_section ();\n"; pr " r = nbd_%s " name; C.print_arg_list ~wrap:true ~handle:true ~types:false args optargs; pr ";\n"; pr " caml_leave_blocking_section ();\n"; pr "\n"; (match errcode with | Some code -> pr " if (r == %s)\n" code; pr " nbd_internal_ocaml_raise_error ();\n"; pr "\n" | None -> () ); (match ret with | RBool -> pr " rv = Val_bool (r);\n" | RErr -> pr " rv = Val_unit;\n" | RFd | RInt | RSizeT | RUInt | RUIntPtr -> pr " rv = Val_int (r);\n" | REnum { enum_prefix } -> pr " rv = Val_%s (r);\n" enum_prefix | RFlags { flag_prefix } -> pr " rv = Val_%s (r);\n" flag_prefix | RInt64 | RCookie | RUInt64 -> pr " rv = caml_copy_int64 (r);\n" | RStaticString -> pr " rv = caml_copy_string (r);\n" | RString -> pr " rv = caml_copy_string (r);\n"; pr " free (r);\n" ); (* Any parameters which need to be freed. *) List.iter ( function | StringList n -> pr " free (%s);\n" n | Bool _ | BytesIn _ | BytesPersistIn _ | BytesOut _ | BytesPersistOut _ | Closure _ | Enum _ | Fd _ | Flags _ | Int _ | Int64 _ | Path _ | SizeT _ | String _ | SockAddrAndLen _ | UInt _ | UInt32 _ | UInt64 _ | UIntPtr _ -> () | Extent64 _ -> assert false (* only used in extent64_closure *) ) args; pr " CAMLreturn (rv);\n"; pr "}\n"; pr "\n"; let num_args = num_params args optargs in if num_args > 5 then ( pr "/* Byte-code compat function because this method has > 5 parameters.\n"; pr " */\n"; pr "value\n"; pr "nbd_internal_ocaml_nbd_%s_byte (value *argv, int argn)\n" name; pr "{\n"; pr " return nbd_internal_ocaml_nbd_%s (" name; let print_args () = for i = 0 to num_args - 1 do if i > 0 then pr ", "; pr "argv[%d]" i done in pr_wrap ',' print_args; pr ");\n"; pr "}\n"; pr "\n" ) let generate_ocaml_nbd_c () = generate_header CStyle; pr "#include \n"; pr "\n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "\n"; pr "#include \n"; pr "\n"; pr "#include \"nbd-c.h\"\n"; pr "\n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "#include \n"; pr "\n"; pr "#pragma GCC diagnostic ignored \"-Wmissing-prototypes\"\n"; pr "\n"; pr "/* This is passed to *_wrapper as the user_data pointer\n"; pr " * and freed in the free_user_data function below.\n"; pr " */\n"; pr "struct user_data {\n"; pr " value fnv; /* Optional GC root pointing to OCaml function. */\n"; pr " value bufv; /* Optional GC root pointing to persistent buffer. */\n"; pr "};\n"; pr "\n"; pr "static struct user_data *\n"; pr "alloc_user_data (void)\n"; pr "{\n"; pr " struct user_data *data = calloc (1, sizeof *data);\n"; pr " if (data == NULL)\n"; pr " caml_raise_out_of_memory ();\n"; pr " return data;\n"; pr "}\n"; pr "\n"; pr "static void\n"; pr "free_user_data (void *user_data)\n"; pr "{\n"; pr " struct user_data *data = user_data;\n"; pr "\n"; pr " if (data->fnv != 0)\n"; pr " caml_remove_generational_global_root (&data->fnv);\n"; pr " if (data->bufv != 0)\n"; pr " caml_remove_generational_global_root (&data->bufv);\n"; pr " free (data);\n"; pr "}\n"; pr "\n"; List.iter print_ocaml_closure_wrapper all_closures; List.iter print_ocaml_enum_val all_enums; List.iter print_ocaml_flag_val all_flags; List.iter print_ocaml_binding handle_calls libnbd-1.20.3/generator/GoLang.mli0000644000175000017500000000174714525371754012376 (* nbd client library in userspace: generator * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) val generate_golang_bindings_go : unit -> unit val generate_golang_closures_go : unit -> unit val generate_golang_wrappers_go : unit -> unit val generate_golang_wrappers_h : unit -> unit libnbd-1.20.3/generator/GoLang.ml0000644000175000017500000005563014525371754012225 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generator * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Go language bindings. * * These are designed so they can be shipped separately and should * interwork with older or newer versions of libnbd (to some extent). * This means we cannot use and must be careful to use * #ifdef LIBNBD_HAVE_* from *) open Printf open API open Utils let go_name_of_arg = function | Bool n -> n | BytesIn (n, len) -> n | BytesOut (n, len) -> n | BytesPersistIn (n, len) -> n | BytesPersistOut (n, len) -> n | Closure { cbname } -> cbname | Enum (n, _) -> n | Extent64 _ -> assert false (* only used in extent64_closure *) | Fd n -> n | Flags (n, _) -> n | Int n -> n | Int64 n -> n | Path n -> n | SizeT n -> n | SockAddrAndLen (n, len) -> n | String n -> n | StringList n -> n | UInt n -> n | UInt32 n -> n | UInt64 n -> n | UIntPtr n -> n let go_arg_type = function | Bool _ -> "bool" | BytesIn _ -> "[]byte" | BytesPersistIn _ -> "AioBuffer" | BytesOut _ -> "[]byte" | BytesPersistOut _ -> "AioBuffer" | Closure { cbname } -> sprintf "%sCallback" (camel_case cbname) | Enum (_, { enum_prefix }) -> camel_case enum_prefix | Extent64 _ -> assert false (* only used in extent64_closure *) | Fd _ -> "int" | Flags (_, { flag_prefix }) -> camel_case flag_prefix | Int _ -> "int" | Int64 _ -> "int64" | Path _ -> "string" | SizeT _ -> "int" | SockAddrAndLen _ -> "string" | String _ -> "string" | StringList _ -> "[]string" | UInt _ -> "uint" | UInt32 _ -> "uint32" | UInt64 _ -> "uint64" | UIntPtr _ -> "uint" let go_name_of_optarg = function | OClosure { cbname } -> sprintf "%sCallback" (camel_case cbname) | OFlags (n, _, _) -> String.capitalize_ascii n let go_ret_type = function (* RErr returns only the error, with no return value. *) | RErr -> None | RBool -> Some "bool" | RStaticString -> Some "*string" | RFd -> Some "int" | RInt -> Some "uint" | RInt64 -> Some "uint64" | RCookie -> Some "uint64" | RSizeT -> Some "uint" | RString -> Some "*string" (* RUInt | RUIntPtr | RUInt64 returns (type, error) for consistency, but the * error is always nil unless h is closed *) | RUInt -> Some "uint" | RUIntPtr -> Some "uint" | RUInt64 -> Some "uint64" | REnum { enum_prefix } -> Some (camel_case enum_prefix) | RFlags { flag_prefix } -> Some (camel_case flag_prefix) let go_ret_error = function | RErr -> None | RBool -> Some "false" | RStaticString | RString -> Some "nil" | RFd | RInt | RInt64 | RCookie | RSizeT | RUInt | RUIntPtr | RUInt64 | REnum _ | RFlags _ -> Some "0" let go_ret_c_errcode = function | RBool -> Some "-1" | RStaticString -> Some "nil" | RErr | RFd | RInt | RInt64 | RCookie | RSizeT -> Some "-1" | RString -> Some "nil" | RUInt | RUIntPtr | RUInt64 | REnum _ | RFlags _ -> None (* We need a wrapper around every function (except Close) to * handle errors because cgo calls are sequence points and * could result in us being rescheduled on another thread, * but libnbd error handling means we must call nbd_get_error * etc from the same thread. *) let print_wrapper (name, { args; optargs; ret }) = let ret_c_type = C.type_of_ret ret and errcode = C.errcode_of_ret ret in let ucname = String.uppercase_ascii name in pr "%s\n" ret_c_type; pr "_nbd_%s_wrapper (struct error *err,\n" name; pr " "; C.print_arg_list ~wrap:true ~handle:true ~parens:NoParens args optargs; pr ")\n"; pr "{\n"; pr "#ifdef LIBNBD_HAVE_NBD_%s\n" ucname; pr " %s ret;\n" ret_c_type; pr "\n"; pr " ret = nbd_%s " name; C.print_arg_list ~wrap:true ~handle:true ~types:false args optargs; pr ";\n"; (match errcode with | None -> () | Some errcode -> pr " if (ret == %s)\n" errcode; pr " save_error (err);\n"; ); pr " return ret;\n"; pr "#else // !LIBNBD_HAVE_NBD_%s\n" ucname; pr " missing_function (err, \"%s\");\n" name; (match errcode with | None -> () | Some errcode -> pr " return %s;\n" errcode ); pr "#endif\n"; pr "}\n"; pr "\n" (* C wrappers around callbacks. *) let print_callback_wrapper { cbname; cbargs } = pr "int\n"; pr "_nbd_%s_callback_wrapper " cbname; C.print_cbarg_list ~wrap:true cbargs; pr "\n"; pr "{\n"; pr " return %s_callback ((long)" cbname; C.print_cbarg_list ~types:false ~parens:false cbargs; pr ");\n"; pr "}\n"; pr "\n"; pr "void\n"; pr "_nbd_%s_callback_free (void *user_data)\n" cbname; pr "{\n"; pr " long *p = user_data;\n"; pr " extern void freeCallbackId (long);\n"; pr " freeCallbackId (*p);\n"; pr " free (p);\n"; pr "}\n"; pr "\n" let print_binding (name, { args; optargs; ret; shortdesc }) = let cname = camel_case name in pr "\n"; (* Tedious method of passing optional arguments in golang. *) if optargs <> [] then ( pr "/* Struct carrying optional arguments for %s. */\n" cname; pr "type %sOptargs struct {\n" cname; List.iter ( fun optarg -> let fname = go_name_of_optarg optarg in pr " /* %s field is ignored unless %sSet == true. */\n" fname fname; pr " %sSet bool\n" fname; pr " %s " fname; (match optarg with | OClosure { cbname } -> pr "%sCallback" (camel_case cbname) | OFlags (_, {flag_prefix}, _) -> pr "%s" (camel_case flag_prefix) ); pr "\n" ) optargs; pr "}\n"; pr "\n"; ); (* Define the golang function which calls the C wrapper. *) pr "/* %s: %s */\n" cname shortdesc; pr "func (h *Libnbd) %s(" cname; let comma = ref false in List.iter ( fun arg -> if !comma then pr ", "; comma := true; pr "%s %s" (go_name_of_arg arg) (go_arg_type arg) ) args; if optargs <> [] then ( if !comma then pr ", "; comma := true; pr "optargs *%sOptargs" cname ); pr ") "; (match go_ret_type ret with | None -> pr "error" | Some t -> pr "(%s, error)" t ); pr " {\n"; pr " if h.h == nil {\n"; (match go_ret_error ret with | None -> pr " return closed_handle_error(\"%s\")\n" name | Some v -> pr " return %s, closed_handle_error(\"%s\")\n" v name ); pr " }\n"; pr "\n"; pr " var c_err C.struct_error\n"; List.iter ( function | Bool n -> pr " c_%s := C.bool(%s)\n" n n | BytesIn (n, len) -> pr " c_%s := unsafe.Pointer(&%s[0])\n" n n; pr " c_%s := C.size_t(len(%s))\n" len n; | BytesOut (n, len) -> pr " c_%s := unsafe.Pointer(&%s[0])\n" n n; pr " c_%s := C.size_t(len(%s))\n" len n; | BytesPersistIn (n, len) -> pr " c_%s := %s.P\n" n n; pr " c_%s := C.size_t(%s.Size)\n" len n; | BytesPersistOut (n, len) -> pr " c_%s := %s.P\n" n n; pr " c_%s := C.size_t(%s.Size)\n" len n; | Closure { cbname } -> pr " var c_%s C.nbd_%s_callback\n" cbname cbname; pr " c_%s.callback = (*[0]byte)(C._nbd_%s_callback_wrapper)\n" cbname cbname; pr " c_%s.free = (*[0]byte)(C._nbd_%s_callback_free)\n" cbname cbname; pr " %s_cbid := registerCallbackId(%s)\n" cbname cbname; pr " c_%s.user_data = C.alloc_cbid(C.long(%s_cbid))\n" cbname cbname | Enum (n, _) -> pr " c_%s := C.int(%s)\n" n n | Extent64 _ -> assert false (* only used in extent64_closure *) | Fd n -> pr " c_%s := C.int(%s)\n" n n | Flags (n, _) -> pr " c_%s := C.uint32_t(%s)\n" n n | Int n -> pr " c_%s := C.int(%s)\n" n n | Int64 n -> pr " c_%s := C.int64_t(%s)\n" n n | Path n -> pr " c_%s := C.CString(%s)\n" n n; pr " defer C.free(unsafe.Pointer(c_%s))\n" n | SizeT n -> pr " c_%s := C.size_t(%s)\n" n n | SockAddrAndLen (n, len) -> pr " panic(\"SockAddrAndLen not supported\")\n"; pr " var c_%s *C.struct_sockaddr\n" n; pr " var c_%s C.uint\n" len | String n -> pr " c_%s := C.CString(%s)\n" n n; pr " defer C.free(unsafe.Pointer(c_%s))\n" n | StringList n -> pr " c_%s := arg_string_list(%s)\n" n n; pr " defer free_string_list(c_%s)\n" n | UInt n -> pr " c_%s := C.uint(%s)\n" n n | UInt32 n -> pr " c_%s := C.uint32_t(%s)\n" n n | UInt64 n -> pr " c_%s := C.uint64_t(%s)\n" n n | UIntPtr n -> pr " c_%s := C.uintptr_t(%s)\n" n n ) args; if optargs <> [] then ( List.iter ( function | OClosure { cbname } -> pr " var c_%s C.nbd_%s_callback\n" cbname cbname | OFlags (n, _, _) -> pr " var c_%s C.uint32_t\n" n ) optargs; pr " if optargs != nil {\n"; List.iter ( fun optarg -> pr " if optargs.%sSet {\n" (go_name_of_optarg optarg); (match optarg with | OClosure { cbname } -> pr " c_%s.callback = (*[0]byte)(C._nbd_%s_callback_wrapper)\n" cbname cbname; pr " c_%s.free = (*[0]byte)(C._nbd_%s_callback_free)\n" cbname cbname; pr " %s_cbid := registerCallbackId(optargs.%s)\n" cbname (go_name_of_optarg optarg); pr " c_%s.user_data = C.alloc_cbid(C.long(%s_cbid))\n" cbname cbname | OFlags (n, _, _) -> pr " c_%s = C.uint32_t(optargs.%s)\n" n (go_name_of_optarg optarg); ); pr " }\n"; ) optargs; pr " }\n"; ); pr "\n"; pr " ret := C._nbd_%s_wrapper(&c_err, h.h" name; List.iter ( function | Bool n -> pr ", c_%s" n | BytesIn (n, len) -> pr ", c_%s, c_%s" n len | BytesOut (n, len) -> pr ", c_%s, c_%s" n len | BytesPersistIn (n, len) -> pr ", c_%s, c_%s" n len | BytesPersistOut (n, len) -> pr ", c_%s, c_%s" n len | Closure { cbname } -> pr ", c_%s" cbname | Enum (n, _) -> pr ", c_%s" n | Extent64 _ -> assert false (* only used in extent64_closure *) | Fd n -> pr ", c_%s" n | Flags (n, _) -> pr ", c_%s" n | Int n -> pr ", c_%s" n | Int64 n -> pr ", c_%s" n | Path n -> pr ", c_%s" n | SizeT n -> pr ", c_%s" n | SockAddrAndLen (n, len) -> pr ", c_%s, c_%s" n len | String n -> pr ", c_%s" n | StringList n -> pr ", &c_%s[0]" n | UInt n | UIntPtr n -> pr ", c_%s" n | UInt32 n -> pr ", c_%s" n | UInt64 n -> pr ", c_%s" n ) args; List.iter ( function | OClosure { cbname} -> pr ", c_%s" cbname | OFlags (n, _, _) -> pr ", c_%s" n ) optargs; pr ")\n"; (* This ensures that we keep the handle alive until the C * function has completed, in case all other references * to the handle have disappeared and the finalizer would run. *) pr " runtime.KeepAlive(h.h)\n"; let errcode = go_ret_c_errcode ret in (match errcode with | None -> () | Some errcode -> pr " if ret == %s {\n" errcode; pr " err := get_error(\"%s\", c_err)\n" name; pr " C.free_error(&c_err)\n"; (match go_ret_error ret with | None -> pr " return err\n" | Some v -> pr " return %s, err\n" v ); pr " }\n"; ); (match ret with | RErr -> pr " return nil\n" | RBool -> pr " return int(ret) != 0, nil\n" | RStaticString -> pr " /* ret is statically allocated, do not free it. */\n"; pr " r := C.GoString(ret)\n"; pr " return &r, nil\n" | RFd -> pr " return int(ret), nil\n" | RInt -> pr " return uint(ret), nil\n" | RInt64 -> pr " return uint64(ret), nil\n" | RCookie -> pr " return uint64(ret), nil\n" | RSizeT -> pr " return uint(ret), nil\n" | RString -> pr " r := C.GoString(ret)\n"; pr " C.free(unsafe.Pointer(ret))\n"; pr " return &r, nil\n" | RUInt -> pr " return uint(ret), nil\n" | RUIntPtr -> pr " return uint(ret), nil\n" | RUInt64 -> pr " return uint64(ret), nil\n" | REnum { enum_prefix } -> pr " return %s(ret), nil\n" (camel_case enum_prefix) | RFlags { flag_prefix } -> pr " return %s(ret), nil\n" (camel_case flag_prefix) ); pr "}\n" let generate_golang_bindings_go () = generate_header CStyle; pr "\ package libnbd /* #cgo pkg-config: libnbd #cgo CFLAGS: -D_GNU_SOURCE=1 #include #include #include #include \"libnbd.h\" #include \"wrappers.h\" // There must be no blank line between end comment and import! // https://github.com/golang/go/issues/9733 */ import \"C\" import ( \"runtime\" \"unsafe\" ) /* Enums. */ "; List.iter ( fun { enum_prefix; enums } -> pr "type %s int\n" (camel_case enum_prefix); pr "\n"; pr "const (\n"; List.iter ( fun (enum, v) -> pr " %s_%s = %s(%d)\n" enum_prefix enum (camel_case enum_prefix) v ) enums; pr ")\n"; pr "\n" ) all_enums; pr "\ /* Flags. */ "; List.iter ( fun { flag_prefix; flags } -> let flag_type = camel_case flag_prefix in let mask = ref 0 in pr "type %s uint32\n" flag_type; pr "\n"; pr "const (\n"; List.iter ( fun (flag, v) -> pr " %s_%s = %s(0x%02x)\n" flag_prefix flag flag_type v; mask := !mask lor v ) flags; pr " %s_MASK = %s(0x%02x)\n" flag_prefix flag_type !mask; pr ")\n"; pr "\n" ) all_flags; pr "\ /* Constants. */ const ( "; List.iter ( fun (n, v) -> pr " %s uint32 = %d\n" n v ) constants; List.iter ( fun (ns, ctxts) -> let ns_upper = String.uppercase_ascii ns in pr " /* Meta-context namespace \"%s\" */\n" ns; pr " NAMESPACE_%s = \"%s:\"\n" ns_upper ns; List.iter ( fun (ctxt, consts) -> let ctxt_macro = String.uppercase_ascii (macro_name ctxt) in pr " CONTEXT_%s_%s = \"%s:%s\"\n" ns_upper ctxt_macro ns ctxt; if consts <> [] then pr " /* Defined bits in \"%s:%s\" */\n" ns ctxt; List.iter (fun (n, v) -> pr " %s uint32 = %d\n" n v ) consts ) ctxts; ) metadata_namespaces; pr ")\n"; (* Bindings. *) List.iter print_binding handle_calls let generate_golang_closures_go () = generate_header CStyle; pr "\ package libnbd /* #cgo pkg-config: libnbd #cgo CFLAGS: -D_GNU_SOURCE=1 #include #include \"libnbd.h\" #include \"wrappers.h\" */ import \"C\" import \"unsafe\" /* Closures. */ func copy_uint32_array(entries *C.uint32_t, count C.size_t) []uint32 { ret := make([]uint32, count) s := unsafe.Slice(entries, count) for i, item := range s { ret[i] = uint32(item) } return ret } func copy_extent_array(entries *C.nbd_extent, count C.size_t) []LibnbdExtent { ret := make([]LibnbdExtent, count) s := unsafe.Slice(entries, count) for i, item := range s { ret[i].Length = uint64(item.length) ret[i].Flags = uint64(item.flags) } return ret } "; List.iter ( fun { cbname; cbargs } -> let uname = camel_case cbname in pr "\n"; pr "type %sCallback func(" uname; let comma = ref false in List.iter ( fun cbarg -> if !comma then pr ", "; comma := true; match cbarg with | CBArrayAndLen (UInt32 n, _) -> pr "%s []uint32" n; | CBArrayAndLen (Extent64 n, _) -> pr "%s []LibnbdExtent" n; | CBBytesIn (n, len) -> pr "%s []byte" n; | CBInt n -> pr "%s int" n | CBUInt n -> pr "%s uint" n | CBInt64 n -> pr "%s int64" n | CBString n -> pr "%s string" n | CBUInt64 n -> pr "%s uint64" n | CBMutable (Int n) -> pr "%s *int" n | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs; pr ") int\n"; pr "\n"; pr "//export %s_callback\n" cbname; pr "func %s_callback(callbackid *C.long" cbname; List.iter ( fun cbarg -> pr ", "; match cbarg with | CBArrayAndLen (UInt32 n, count) -> pr "%s *C.uint32_t, %s C.size_t" n count | CBArrayAndLen (Extent64 n, count) -> pr "%s *C.nbd_extent, %s C.size_t" n count | CBBytesIn (n, len) -> pr "%s unsafe.Pointer, %s C.size_t" n len | CBInt n -> pr "%s C.int" n | CBUInt n -> pr "%s C.uint" n | CBInt64 n -> pr "%s C.int64_t" n | CBString n -> pr "%s *C.char" n | CBUInt64 n -> pr "%s C.uint64_t" n | CBMutable (Int n) -> pr "%s *C.int" n | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs; pr ") C.int {\n"; pr " callbackFunc := getCallbackId(int(*callbackid))\n"; pr " callback, ok := callbackFunc.(%sCallback)\n" uname; pr " if !ok {\n"; pr " panic(\"inappropriate callback type\")\n"; pr " }\n"; (* Deal with mutable int by creating a local variable * and passing a pointer to it to the callback. *) List.iter ( fun cbarg -> match cbarg with | CBMutable (Int n) -> pr " go_%s := int(*%s)\n" n n | _ -> () ) cbargs; pr " ret := callback("; let comma = ref false in List.iter ( fun cbarg -> if !comma then pr ", "; comma := true; match cbarg with | CBArrayAndLen (UInt32 n, count) -> pr "copy_uint32_array(%s, %s)" n count | CBArrayAndLen (Extent64 n, count) -> pr "copy_extent_array(%s, %s)" n count | CBBytesIn (n, len) -> pr "C.GoBytes(%s, C.int(%s))" n len | CBInt n -> pr "int(%s)" n | CBUInt n -> pr "uint(%s)" n | CBInt64 n -> pr "int64(%s)" n | CBString n -> pr "C.GoString(%s)" n | CBUInt64 n -> pr "uint64(%s)" n | CBMutable (Int n) -> pr "&go_%s" n | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs; pr ")\n"; List.iter ( fun cbarg -> match cbarg with | CBMutable (Int n) -> pr " *%s = C.int(go_%s)\n" n n | _ -> () ) cbargs; pr " return C.int(ret)\n"; pr "}\n" ) all_closures let generate_golang_wrappers_go () = generate_header CStyle; pr "\ package libnbd /* #cgo pkg-config: libnbd #cgo CFLAGS: -D_GNU_SOURCE=1 #include #include #include #include \"libnbd.h\" #include \"wrappers.h\" "; (* Wrappers. *) List.iter print_wrapper handle_calls; (* Callback wrappers. *) List.iter print_callback_wrapper all_closures; pr "\ // There must be no blank line between end comment and import! // https://github.com/golang/go/issues/9733 */ import \"C\" " let generate_golang_wrappers_h () = generate_header CStyle; pr "\ #ifndef LIBNBD_GOLANG_WRAPPERS_H #define LIBNBD_GOLANG_WRAPPERS_H #include #include #include #include #include \"libnbd.h\" /* When calling callbacks we pass the callback ID (a golang int / * C.long) in the void *user_data field. We need to create a block * to store the callback number. This must be freed by C.free(vp) */ static inline void * alloc_cbid (long i) { long *p = malloc (sizeof (long)); assert (p != NULL); *p = i; return p; } /* save_error is called from the same thread to make a copy * of the error which can later be retrieve from golang code * possibly running in a different thread. */ struct error { char *error; int errnum; }; static inline void save_error (struct error *err) { err->error = strdup (nbd_get_error ()); err->errnum = nbd_get_errno (); } static inline void free_error (struct error *err) { free (err->error); } /* If you mix old C library and new bindings then some C * functions may not be defined. They return ENOTSUP. */ static inline void missing_function (struct error *err, const char *fn) { asprintf (&err->error, \"%%s: \" \"function missing because golang bindings were compiled \" \"against an old version of the C library\", fn); err->errnum = ENOTSUP; } "; (* Function decl for each wrapper. *) List.iter ( fun (name, { args; optargs; ret }) -> let ret_c_type = C.type_of_ret ret in pr "%s _nbd_%s_wrapper (struct error *err,\n" ret_c_type name; pr " "; C.print_arg_list ~wrap:true ~handle:true ~parens:NoParens args optargs; pr ");\n"; ) handle_calls; pr "\n"; (* Function decl for each callback wrapper. *) List.iter ( fun { cbname; cbargs } -> (* * It would be nice to do this, but it basically means we have * to guess the prototype that golang will generate for a * golang exported function. Also golang doesn't bother with * const-correctness. pr "extern int %s_callback (long callbackid" cbname; List.iter ( fun cbarg -> pr ", "; match cbarg with | CBArrayAndLen (UInt32 n, count) -> pr "uint32_t *%s, size_t %s" n count | CBArrayAndLen (Extent64 n, count) -> pr "nbd_extent *%s, size_t %s" n count | CBBytesIn (n, len) -> pr "void *%s, size_t %s" n len | CBInt n -> pr "int %s" n | CBUInt n -> pr "unsigned int %s" n | CBInt64 n -> pr "int64_t %s" n | CBString n -> pr "char *%s" n | CBUInt64 n -> pr "uint64_t *%s" n | CBMutable (Int n) -> pr "int *%s" n | CBArrayAndLen _ | CBMutable _ -> assert false ) cbargs; pr ");\n"; pr "\n"; * So instead we do this: *) pr "extern int %s_callback ();\n" cbname; pr "\n"; pr "int _nbd_%s_callback_wrapper " cbname; C.print_cbarg_list ~wrap:true cbargs; pr ";\n"; pr "void _nbd_%s_callback_free (void *user_data);\n" cbname; pr "\n"; ) all_closures; pr "\ #endif /* LIBNBD_GOLANG_WRAPPERS_H */ " libnbd-1.20.3/generator/RustSys.mli0000644000175000017500000000154114525371754012653 (* nbd client library in userspace: generator * Copyright Tage Johansson * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) val generate_rust_sys_bindings : unit -> unit libnbd-1.20.3/generator/RustSys.ml0000644000175000017500000001307414525371754012506 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generator * Copyright Tage Johansson * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Low level Rust bindings for the libnbd-sys crate. *) open Printf open API open Utils (** A list of the argument types corresponding to an [arg]. *) let arg_types : arg -> string list = function | Bool n -> [ "bool" ] | Int n | Fd n | Enum (n, _) -> [ "c_int" ] | UInt n -> [ "c_uint" ] | UIntPtr n -> [ "uintptr_t" ] | SizeT n -> [ "size_t" ] | UInt32 n | Flags (n, _) -> [ "u32" ] | Int64 n -> [ "i64" ] | UInt64 n -> [ "u64" ] | String n | Path n -> [ "*const c_char" ] | SockAddrAndLen (n1, n2) -> [ "*const sockaddr"; "socklen_t" ] | StringList n -> [ "*mut *mut c_char" ] | BytesIn (n1, n2) | BytesPersistIn (n1, n2) -> [ "*const c_void"; "usize" ] | BytesOut (n1, n2) | BytesPersistOut (n1, n2) -> [ "*mut c_void"; "usize" ] | Closure { cbname } -> [ sprintf "nbd_%s_callback" cbname ] | Extent64 (_) -> [ "nbd_extent" ] (** The type of an optional argument. *) let optarg_type : optarg -> string = function | OClosure { cbname } -> sprintf "nbd_%s_callback" cbname | OFlags _ -> "u32" (** The types of arguments corresponding to a [cbarg]. *) let cbarg_types : cbarg -> string list = function | CBInt n -> arg_types (Int n) | CBUInt n -> arg_types (UInt n) | CBInt64 n -> arg_types (Int64 n) | CBUInt64 n -> arg_types (UInt64 n) | CBString n -> arg_types (String n) | CBBytesIn (n1, n2) -> arg_types (BytesIn (n1, n2)) | CBMutable arg -> arg_types arg |> List.map (fun x -> "*mut " ^ x) | CBArrayAndLen (elem, _) -> let elem_type = match arg_types elem with | [ x ] -> x | _ -> failwith "Bad array element type" in [ sprintf "*mut %s" elem_type; "usize" ] (** Get a return type. *) let ret_type : ret -> string = function | RBool -> "c_int" | RStaticString -> "*const c_char" | RInt | RErr | RFd | REnum _ -> "c_int" | RInt64 | RCookie -> "i64" | RSizeT -> "isize" | RString -> "*mut c_char" | RUInt -> "c_uint" | RUInt64 -> "u64" | RUIntPtr -> "uintptr_t" | RFlags _ -> "u32" (** The names of all arguments corresponding to an [arg]. *) let arg_names : arg -> string list = function | Bool n | Int n | UInt n | UIntPtr n | UInt32 n | Int64 n | UInt64 n | SizeT n | String n | StringList n | Path n | Fd n | Enum (n, _) | Flags (n, _) | Closure { cbname = n } -> [ n ] | SockAddrAndLen (n1, n2) | BytesIn (n1, n2) | BytesPersistIn (n1, n2) | BytesOut (n1, n2) | BytesPersistOut (n1, n2) -> [ n1; n2 ] | Extent64 _ -> assert false (* only used in extent64_closure *) (** The name of an optional argument. *) let optarg_name : optarg -> string = function | OClosure { cbname = name } | OFlags (name, _, _) -> name (** Print the struct for a closure. *) let print_closure_struct { cbname; cbargs } = pr "#[repr(C)]\n"; pr "#[derive(Debug, Clone, Copy)]\n"; pr "pub struct nbd_%s_callback {\n" cbname; pr " pub callback: \n"; pr " Option c_int>,\n" (cbargs |> List.map cbarg_types |> List.flatten |> String.concat ", "); pr " pub user_data: *mut c_void,\n"; pr " pub free: Option,\n"; pr "}\n" (** Print an "extern definition" for a handle call. *) let print_handle_call (name, call) = let args_names = (call.args |> List.map arg_names |> List.flatten) @ (call.optargs |> List.map optarg_name) in let args_types = (call.args |> List.map arg_types |> List.flatten) @ (call.optargs |> List.map optarg_type) in pr "pub fn nbd_%s(handle: *mut nbd_handle, %s) -> %s;\n" name (List.map2 (fun n ty -> sprintf "%s: %s" n ty) args_names args_types |> String.concat ", ") (ret_type call.ret) (** Print a definition of "nbd_handle" and "nbd_extent" types. *) let print_types () = pr "#[repr(C)]\n"; pr "#[derive(Debug, Clone, Copy)]\n"; pr "pub struct nbd_handle {\n"; pr " _unused: [u8; 0],\n"; pr "}\n"; pr "\n"; pr "#[repr(C)]\n"; pr "#[derive(Debug, Clone, Copy)]\n"; pr "pub struct nbd_extent {\n"; pr " length: u64,\n"; pr " flags: u64,\n"; pr "}\n"; pr "\n" (** Print some more "extern definitions". *) let print_more_defs () = pr "extern \"C\" {\n"; pr "pub fn nbd_get_error() -> *const c_char;\n"; pr "pub fn nbd_get_errno() -> c_int;\n"; pr "pub fn nbd_create() -> *mut nbd_handle;\n"; pr "pub fn nbd_close(h: *mut nbd_handle);\n"; pr "}\n"; pr "\n" let print_imports () = pr "use libc::*;\n"; pr "use std::ffi::c_void;\n"; pr "\n" let generate_rust_sys_bindings () = generate_header CStyle ~copyright:"Tage Johansson"; pr "\n"; print_imports (); print_types (); print_more_defs (); all_closures |> List.iter print_closure_struct; pr "extern \"C\" {\n"; handle_calls |> List.iter print_handle_call; pr "}\n\n" libnbd-1.20.3/generator/Rust.mli0000644000175000017500000000173414525371754012160 (* nbd client library in userspace: generator * Copyright Tage Johansson * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Print all flag-structs, enums, constants and handle calls in Rust code. *) val generate_rust_bindings : unit -> unit val generate_rust_async_bindings : unit -> unit libnbd-1.20.3/generator/Rust.ml0000644000175000017500000010212614675532370012003 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generator * Copyright Tage Johansson * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Rust language bindings. *) open Printf open API open Utils (* The type for a set of names. *) module NameSet = Set.Make (String) (* List of handle calls which should not be part of the public API. This could for instance be `set_debug` and `set_debug_callback` which are handled separately by the log crate *) let hidden_handle_calls : NameSet.t = NameSet.of_list [ "get_debug"; "set_debug"; "set_debug_callback"; "clear_debug_callback" ] let print_rust_constant (name, value) = pr "pub const %s: u32 = %d;\n" name value let print_rust_enum enum = pr "#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]\n"; pr "#[repr(isize)]"; pr "pub enum %s {\n" (camel_case enum.enum_prefix); List.iter (fun (name, num) -> pr " %s = %d,\n" (camel_case name) num) enum.enums; pr "}\n\n" (* Print a Rust struct for a set of flags. *) let print_rust_flags { flag_prefix; flags } = pr "bitflags! {\n"; pr " #[repr(C)]\n"; pr " #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]\n"; pr " pub struct %s: u32 {\n" (camel_case flag_prefix); List.iter (fun (name, value) -> pr " const %s = %d;\n" name value) flags; pr " }\n"; pr "}\n\n" (* Convert a string to upper snake case. *) let rec to_upper_snake_case s = let s = String.uppercase_ascii s in let s = explode s in let s = filter_map ( function |'-' -> Some "_" | ':' -> None | ch -> Some (String.make 1 ch) ) s in String.concat "" s (* Split a string into a list of chars. In later OCaml we could * use Seq here, but that didn't exist in OCaml 4.05. *) and explode str = let r = ref [] in for i = 0 to String.length str - 1 do let c = String.unsafe_get str i in r := c :: !r; done; List.rev !r (* Print metadata namespaces. *) let print_metadata_namespace (ns, ctxts) = pr "pub const NAMESPACE_%s: &[u8] = b\"%s:\";\n" (to_upper_snake_case ns) ns; ctxts |> List.iter (fun (ctxt, consts) -> let s = ns ^ ":" ^ ctxt in pr "pub const CONTEXT_%s_%s: &[u8] = b\"%s\";\n" (to_upper_snake_case ns) (to_upper_snake_case ctxt) s; consts |> List.iter (fun (n, i) -> pr "pub const %s: u32 = %d;\n" (to_upper_snake_case n) i)) (* Get the name of a rust argument. *) let rust_arg_name : arg -> string = function | Bool n | Int n | UInt n | UIntPtr n | UInt32 n | Int64 n | UInt64 n | SizeT n | String n | StringList n | Path n | Fd n | Enum (n, _) | Extent64 n | Flags (n, _) | SockAddrAndLen (n, _) | BytesIn (n, _) | BytesPersistIn (n, _) | BytesOut (n, _) | BytesPersistOut (n, _) | Closure { cbname = n } -> n (* Get the name of a rust optional argument. *) let rust_optarg_name : optarg -> string = function | OClosure { cbname = n } | OFlags (n, _, _) -> n (* Get the name of a Rust closure argument. *) let rust_cbarg_name : cbarg -> string = function | CBInt n | CBUInt n | CBInt64 n | CBUInt64 n | CBString n | CBBytesIn (n, _) -> n | CBArrayAndLen (arg, _) | CBMutable arg -> rust_arg_name arg (* Get the Rust type for an argument. *) let rec rust_arg_type : arg -> string = function | Bool _ -> "bool" | Int _ -> "c_int" | UInt _ -> "c_uint" | UIntPtr _ -> "usize" | UInt32 _ -> "u32" | Int64 _ -> "i64" | UInt64 _ -> "u64" | SizeT _ -> "usize" | String _ -> "impl Into>" | SockAddrAndLen _ -> "SocketAddr" | StringList _ -> "impl IntoIterator>" | Path _ -> "impl Into" | Enum (_, { enum_prefix = name }) | Flags (_, { flag_prefix = name }) -> camel_case name | Fd _ -> "OwnedFd" | BytesIn _ -> "&[u8]" | BytesOut _ -> "&mut [u8]" | BytesPersistIn _ -> "&'static [u8]" | BytesPersistOut _ -> "&'static mut [u8]" | Closure { cbargs } -> "impl " ^ rust_closure_trait cbargs | Extent64 _ -> "NbdExtent" (* Get the Rust closure trait for a callback, That is `Fn*(...) -> ...)`. *) and rust_closure_trait ?(lifetime = Some "'static") cbargs : string = let rust_cbargs = String.concat ", " (List.map rust_cbarg_type cbargs) and lifetime_constraint = match lifetime with None -> "" | Some x -> " + " ^ x in "FnMut(" ^ rust_cbargs ^ ") -> c_int + Send + Sync" ^ lifetime_constraint (* Get the Rust type for a callback argument. *) and rust_cbarg_type : cbarg -> string = function | CBInt n -> rust_arg_type (Int n) | CBUInt n -> rust_arg_type (UInt n) | CBInt64 n -> rust_arg_type (Int64 n) | CBUInt64 n -> rust_arg_type (UInt64 n) | CBString n -> "&[u8]" | CBBytesIn (n1, n2) -> rust_arg_type (BytesIn (n1, n2)) | CBArrayAndLen (elem, _) -> "&[" ^ rust_arg_type elem ^ "]" | CBMutable arg -> "&mut " ^ rust_arg_type arg (* Get the type of a rust optional argument. *) let rust_optarg_type : optarg -> string = function | OClosure x -> sprintf "Option<%s>" (rust_arg_type (Closure x)) | OFlags (name, flags, _) -> sprintf "Option<%s>" (rust_arg_type (Flags (name, flags))) (* Given an argument, produce a list of names for arguments in FFI functions corresponding to that argument. Most arguments will just produce one name for one FFI argument, but for example [BytesIn] requires two separate FFI arguments hence a list is produced. *) let ffi_arg_names : arg -> string list = function | Bool n | Int n | UInt n | UIntPtr n | UInt32 n | Int64 n | UInt64 n | SizeT n | String n | StringList n | Path n | Fd n | Enum (n, _) | Flags (n, _) | Closure { cbname = n } -> [ n ^ "_ffi" ] | SockAddrAndLen (n1, n2) | BytesIn (n1, n2) | BytesPersistIn (n1, n2) | BytesOut (n1, n2) | BytesPersistOut (n1, n2) -> [ n1 ^ "_ffi"; n2 ^ "_ffi" ] | Extent64 _ -> assert false (* only used in extent64_closure *) let ffi_optarg_name : optarg -> string = function | OClosure { cbname = name } | OFlags (name, _, _) -> name ^ "_ffi" (* Given a closure argument, produce a list of names used by FFI functions for that particular argument. Most closure arguments will just produce one FFI argument, but for instance [CBArrayAndLen] will produce two, hence we return a list. *) let ffi_cbarg_names : cbarg -> string list = function | CBInt n | CBUInt n | CBInt64 n | CBUInt64 n | CBString n -> [ n ^ "_ffi" ] | CBBytesIn (n1, n2) -> [ n1 ^ "_ffi"; n2 ^ "_ffi" ] | CBArrayAndLen (arg, len) -> [ rust_arg_name arg ^ "_ffi"; len ^ "_ffi" ] | CBMutable arg -> [ rust_arg_name arg ^ "_ffi" ] (* Given a closure argument, produce a list of types used by FFI functions for that particular argument. Most closure arguments will just produce one FFI argument, but for instance [CBArrayAndLen] will produce two, hence we return a list. *) let ffi_cbarg_types : cbarg -> string list = function | CBInt _ -> [ "c_int" ] | CBUInt _ -> [ "c_uint" ] | CBInt64 _ -> [ "i64" ] | CBUInt64 _ -> [ "u64" ] | CBString _ -> [ "*const c_char" ] | CBBytesIn _ -> [ "*const c_void"; "usize" ] | CBArrayAndLen (UInt32 _, _) -> [ "*mut u32"; "usize" ] | CBArrayAndLen (Extent64 _, _) -> [ "*mut nbd_extent"; "usize" ] | CBArrayAndLen _ -> failwith "generator/Rust.ml: in ffi_cbarg_types: Unsupported type of array \ element." | CBMutable (Int _) -> [ "*mut c_int" ] | CBMutable _ -> failwith "generator/Rust.ml: in ffi_cbarg_types: Unsupported type of mutable \ argument." (* Return type for a Rust function. *) let rust_ret_type call : string = let core_type = match call.ret with | RBool -> "bool" | RStaticString -> "&'static [u8]" | RErr -> "()" | RFd -> "RawFd" | RInt -> "c_uint" | RInt64 -> "u64" | RCookie -> "Cookie" | RSizeT -> "usize" | RString -> "Vec" | RUInt -> "c_uint" | RUIntPtr -> "usize" | RUInt64 -> "u64" | REnum { enum_prefix = name } | RFlags { flag_prefix = name } -> camel_case name in if call.may_set_error then sprintf "Result<%s>" core_type else core_type (* Given an argument ([arg : arg]), print Rust code for variable declarations for all FFI arguments corresponding to [arg]. That is, for each `` in [ffi_arg_names arg], print `let = <...>;`. Assuming that a variable with name [rust_arg_name arg] and type [rust_arg_type arg] exists in scope. *) let rust_arg_to_ffi arg = let rust_name = rust_arg_name arg in let ffi_names = ffi_arg_names arg in match arg with | Bool _ | Int _ | UInt _ | UIntPtr _ | UInt32 _ | Int64 _ | UInt64 _ | SizeT _ -> let ffi_name = match ffi_names with [ x ] -> x | _ -> assert false in pr "let %s = %s;\n" ffi_name rust_name | Enum _ -> let ffi_name = match ffi_names with [ x ] -> x | _ -> assert false in pr "let %s = %s as c_int;\n" ffi_name rust_name | Flags _ -> let ffi_name = match ffi_names with [ x ] -> x | _ -> assert false in pr "let %s = %s.bits();\n" ffi_name rust_name | SockAddrAndLen _ -> let ffi_addr_name, ffi_len_name = match ffi_names with [ x; y ] -> (x, y) | _ -> assert false in pr "let %s_os = OsSocketAddr::from(%s);\n" rust_name rust_name; pr "let %s = %s_os.as_ptr();\n" ffi_addr_name rust_name; pr "let %s = %s_os.len();\n" ffi_len_name rust_name | String _ -> let ffi_name = match ffi_names with [ x ] -> x | _ -> assert false in pr "let %s_buf = CString::new(%s.into()).map_err(|e| Error::from(e))?;\n" rust_name rust_name; pr "let %s = %s_buf.as_ptr();\n" ffi_name rust_name | Path _ -> let ffi_name = match ffi_names with [ x ] -> x | _ -> assert false in pr "let %s_buf = " rust_name; pr "CString::new(%s.into().into_os_string().into_vec())" rust_name; pr ".map_err(|e| Error::from(e))?;\n"; pr "let %s = %s_buf.as_ptr();\n" ffi_name rust_name | StringList _ -> let ffi_name = match ffi_names with [ x ] -> x | _ -> assert false in (* Create a `Vec` with the arguments as `CString`s. This will copy every string and thereby require some extra heap allocations. *) pr "let %s_c_strs: Vec = " ffi_name; pr "%s.into_iter()" rust_name; pr ".map(|x| CString::new(x.as_ref())"; pr ".map_err(|e| Error::from(e.to_string())))"; pr ".collect::>>()?;\n"; (* Create a vector of pointers to all of these `CString`s. For some reason, the C API hasn't marked the pointers as const, so we use `cast_mut` and `as_mut_ptr` here even though the strings shouldn't be modified. *) pr "let mut %s_ptrs: Vec<*mut c_char> = \n" ffi_name; pr " %s_c_strs.iter().map(|x| x.as_ptr().cast_mut()).collect();\n" ffi_name; (* Add a null pointer to mark the end of the list. *) pr "%s_ptrs.push(ptr::null_mut());\n" ffi_name; pr "let %s = %s_ptrs.as_mut_ptr();\n" ffi_name ffi_name | BytesIn _ | BytesPersistIn _ -> let ffi_buf_name, ffi_len_name = match ffi_names with [ x; y ] -> (x, y) | _ -> assert false in pr "let %s = %s.as_ptr() as *const c_void;\n" ffi_buf_name rust_name; pr "let %s = %s.len();\n" ffi_len_name rust_name | BytesOut _ | BytesPersistOut _ -> let ffi_buf_name, ffi_len_name = match ffi_names with [ x; y ] -> (x, y) | _ -> assert false in pr "let %s = %s.as_mut_ptr() as *mut c_void;\n" ffi_buf_name rust_name; pr "let %s = %s.len();\n" ffi_len_name rust_name | Fd _ -> let ffi_name = match ffi_names with [ x ] -> x | _ -> assert false in pr "let %s = %s.as_raw_fd();\n" ffi_name rust_name | Closure _ -> let ffi_name = match ffi_names with [ x ] -> x | _ -> assert false in pr "let %s = unsafe { crate::bindings::%s_to_raw(%s) };\n" ffi_name rust_name rust_name | Extent64 _ -> assert false (* only used in extent64_closure *) (* Same as [rust_arg_to_ffi] but for optional arguments. *) let rust_optarg_to_ffi arg = let rust_name = rust_optarg_name arg in let ffi_name = ffi_optarg_name arg in match arg with | OClosure { cbname } -> pr "let %s = match %s {\n" ffi_name rust_name; pr " Some(f) => unsafe { crate::bindings::%s_to_raw(f) },\n" rust_name; pr " None => sys::nbd_%s_callback { " cbname; pr "callback: None, "; pr "free: None, "; pr "user_data: ptr::null_mut() "; pr "},\n"; pr "};\n" | OFlags (_, { flag_prefix }, _) -> let flags_type = camel_case flag_prefix in pr "let %s = %s.unwrap_or(%s::empty()).bits();\n" ffi_name rust_name flags_type (* Given a closure argument ([x : cbarg]), print Rust code to create a variable with name [rust_cbarg_name x] of type [rust_cbarg_type x]. Assuming that variables with names from [ffi_cbarg_names x] exists in scope. *) let ffi_cbargs_to_rust cbarg = let ffi_names = ffi_cbarg_names cbarg in pr "let %s: %s = " (rust_cbarg_name cbarg) (rust_cbarg_type cbarg); (match (cbarg, ffi_names) with | (CBInt _ | CBUInt _ | CBInt64 _ | CBUInt64 _), [ ffi_name ] -> pr "%s" ffi_name | CBString _, [ ffi_name ] -> pr "CStr::from_ptr(%s).to_bytes()" ffi_name | CBBytesIn _, [ ffi_buf_name; ffi_len_name ] -> pr "slice::from_raw_parts(%s as *const u8, %s)" ffi_buf_name ffi_len_name | CBArrayAndLen (UInt32 _, _), [ ffi_arr_name; ffi_len_name ] -> pr "slice::from_raw_parts(%s, %s)" ffi_arr_name ffi_len_name | CBArrayAndLen (Extent64 _, _), [ ffi_arr_name; ffi_len_name ] -> pr "slice::from_raw_parts(%s as *const NbdExtent, %s)" ffi_arr_name ffi_len_name | CBArrayAndLen _, [ _; _ ] -> failwith "generator/Rust.ml: in ffi_cbargs_to_rust: Unsupported type of array \ element." | CBMutable (Int _), [ ffi_name ] -> pr "%s.as_mut().unwrap()" ffi_name | CBMutable _, [ _ ] -> failwith "generator/Rust.ml: in ffi_cbargs_to_rust: Unsupported type of \ mutable argument." | _, _ -> failwith "generator/Rust.ml: In ffi_cbargs_to_rust: bad number of ffi \ arguments."); pr ";\n" (* Print Rust code for converting a return value from an FFI call to a Rusty return value. In other words, given [x : ret], this functions print a Rust expression with type [rust_ret_type x], with a free variable [ffi_ret] with the return value from the FFI call. *) let ffi_ret_to_rust call = let ret_type = rust_ret_type call in let pure_expr = match call.ret with | RBool -> "ffi_ret != 0" | RErr -> "()" | RInt -> "TryInto::::try_into(ffi_ret).unwrap()" | RInt64 -> "TryInto::::try_into(ffi_ret).unwrap()" | RSizeT -> "TryInto::::try_into(ffi_ret).unwrap()" | RCookie -> "Cookie(ffi_ret.try_into().unwrap())" | RFd -> "ffi_ret as RawFd" | RStaticString -> "unsafe { CStr::from_ptr(ffi_ret) }.to_bytes()" | RString -> "{ let res = \n" ^ " unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes();\n" ^ "unsafe { libc::free(ffi_ret.cast()); }\n" ^ "res }" | RFlags { flag_prefix } -> sprintf "%s::from_bits(ffi_ret).unwrap()" ret_type | RUInt | RUIntPtr | RUInt64 -> sprintf "ffi_ret as %s" ret_type | REnum _ -> (* We know that each enum is represented by an isize, hence this transmute is safe. *) sprintf "unsafe { mem::transmute::(ffi_ret as isize) }" ret_type in if call.may_set_error then ( (match call.ret with | RBool | RErr | RInt | RFd | RInt64 | RCookie | RSizeT -> pr "if ffi_ret < 0 {\n"; pr " Err(unsafe { Error::get_error(self.raw_handle()) })\n"; pr "}\n" | RStaticString | RString -> pr "if ffi_ret.is_null() {\n"; pr " Err(unsafe { Error::get_error(self.raw_handle()) })\n"; pr "}\n" | RUInt | RUIntPtr | RUInt64 | REnum _ | RFlags _ -> failwith "In ffi_ret_to_rust: Return type cannot be an error."); pr "else { Ok(%s) }\n" pure_expr) else pr "%s\n" pure_expr (* This function prints a rust function which converts a rust closure to a (`repr(C)`) struct containing the function pointer, a `*mut c_void` for the closure data, and a free function for the closure data. This struct is what will be sent to a C function taking the closure as an argument. In fact, the struct itself is generated by rust-bindgen. *) let print_rust_closure_to_raw_fn { cbname; cbargs } = let closure_trait = rust_closure_trait cbargs ~lifetime:None in let ffi_cbargs_names = List.flatten (List.map ffi_cbarg_names cbargs) in let ffi_cbargs_types = List.flatten (List.map ffi_cbarg_types cbargs) in let rust_cbargs_names = List.map rust_cbarg_name cbargs in pr "pub(crate) unsafe fn %s_to_raw(f: F) -> sys::nbd_%s_callback\n" cbname cbname; pr " where F: %s\n" closure_trait; pr "{\n"; pr " unsafe extern \"C\" fn call_closure(data: *mut c_void, %s) -> \ c_int\n" (String.concat ", " (List.map2 (sprintf "%s: %s") ffi_cbargs_names ffi_cbargs_types)); pr " where F: %s\n" closure_trait; pr " {\n"; pr " let callback_ptr = data as *mut F;\n"; pr " let callback = &mut *callback_ptr;\n"; List.iter ffi_cbargs_to_rust cbargs; pr " callback(%s)\n" (String.concat ", " rust_cbargs_names); pr " }\n"; pr " let callback_data = Box::into_raw(Box::new(f));\n"; pr " sys::nbd_%s_callback {\n" cbname; pr " callback: Some(call_closure::),\n"; pr " user_data: callback_data as *mut _,\n"; pr " free: Some(utils::drop_data::),\n"; pr " }\n"; pr "}\n"; pr "\n" (* Print the comment for a rust function for a handle call. *) let rec print_rust_handle_call_comment name call = (* Print comments. *) if call.shortdesc <> "" then pr "/// %s\n" (String.concat "\n/// " (String.split_on_char '\n' call.shortdesc)); if call.longdesc <> "" then ( (* If a short comment was printed, print a blank comment line before the long description. *) if call.shortdesc <> "" then pr "/// \n"; let md = longdesc_to_markdown name call.longdesc in List.iter (pr "/// %s\n") md ) (* Convert POD to rustdoc markdown. *) and longdesc_to_markdown name longdesc = (* Replace any POD <> expression *) let content = Str.global_substitute (Str.regexp {|[A-Z]<[^>]+?>|}) (fun s -> let expr = Str.matched_string s in let len = String.length expr in let c = expr.[0] and content = String.sub expr 2 (len-3) in match c with | 'C' -> sprintf "`%s`" content (* C<...> becomes `...` *) | 'B' -> sprintf "%s" content | 'I' | 'F' -> sprintf "%s" content | 'E' -> sprintf "&%s;" content | 'L' -> let len = String.length content in if string_starts_with ~prefix:"nbd_" content then ( let n = String.sub content 4 (len - 7) in if n <> "get_error" && n <> "get_errno" && n <> "close" then sprintf "[%s](Handle::%s)" n n else sprintf "`%s`" n ) else if string_starts_with ~prefix:"http://" content || string_starts_with ~prefix:"https://" content then sprintf "[%s](%s)" content content else (* external manual page - how to link XXX *) sprintf "%s" content | _ -> failwithf "rust: API documentation for %s contains '%s' which cannot be converted to Rust markdown" name expr ) longdesc in (* Split input into lines for rest of the processing. *) let lines = nsplit "\n" content in (* Surround any group of lines starting with whitespace with ```text *) let lines = List.map (fun line -> string_starts_with ~prefix:" " line, line) lines in let (lines : (bool * string list) list) = group_by lines in let lines = List.map (function | true (* verbatim *), lines -> [ "```text" ] @ lines @ [ "```" ] | false, lines -> lines ) lines in let lines = List.flatten lines in (* Replace any = directives *) filter_map ( fun s -> (* This is a very approximate way to translate bullet lists. *) if string_starts_with ~prefix:"=over" s || string_starts_with ~prefix:"=back" s then None else if string_starts_with ~prefix:"=item" s then ( let len = String.length s in let s' = String.sub s 5 (len-5) in Some ("-" ^ s') ) else if string_starts_with ~prefix:"=head" s then ( let i = int_of_string (String.make 1 s.[5]) in let len = String.length s in let s' = String.sub s 6 (len-6) in Some (String.make i '#' ^ s') ) else if string_starts_with ~prefix:"=" s then failwithf "rust: API documentation for %s contains '%s' which cannot be converted to Rust markdown" name s else Some s ) lines (* Print a Rust expression which converts Rust like arguments to FFI like arguments, makes a call on the raw FFI handle, and converts the return value to a Rusty type. The expression assumes that variables with name `rust_arg_name arg` for all `arg` in `call.args` exists in scope. *) let print_ffi_call name handle call = let ffi_args_names = List.flatten (List.map ffi_arg_names call.args) @ List.map ffi_optarg_name call.optargs in pr "{\n"; pr " // Convert all arguments to FFI-like types.\n"; List.iter rust_arg_to_ffi call.args; List.iter rust_optarg_to_ffi call.optargs; pr "\n"; pr " // Call the FFI-function.\n"; pr " let ffi_ret = unsafe { sys::nbd_%s(%s, %s) };\n" name handle (String.concat ", " ffi_args_names); pr "\n"; pr " // Convert the result to something more rusty.\n"; ffi_ret_to_rust call; pr "}\n" (* Print the Rust function for a handle call. Note that this is a "method" on the `Handle` struct. So the printed Rust function should be in an `impl Handle {` block. *) let print_rust_handle_method (name, call) = let rust_args_names = List.map rust_arg_name call.args @ List.map rust_optarg_name call.optargs and rust_args_types = List.map rust_arg_type call.args @ List.map rust_optarg_type call.optargs in let rust_args = String.concat ", " (List.map2 (sprintf "%s: %s") rust_args_names rust_args_types) in print_rust_handle_call_comment name call; (* Print visibility modifier. *) if NameSet.mem name hidden_handle_calls then ( (* If this is hidden to the public API, it might be used only if some feature * is active, and we don't want a unused-warning. *) pr "#[allow(unused)]\n"; pr "pub(crate) ") else pr "pub "; pr "fn %s(&self, %s) -> %s\n" name rust_args (rust_ret_type call); print_ffi_call name "self.handle" call; pr "\n" let print_rust_imports () = pr "use bitflags::bitflags;\n"; pr "use crate::{*, types::*};\n"; pr "use os_socketaddr::OsSocketAddr;\n"; pr "use std::ffi::*;\n"; pr "use std::mem;\n"; pr "use std::net::SocketAddr;\n"; pr "use std::os::fd::{AsRawFd, OwnedFd, RawFd};\n"; pr "use std::os::unix::prelude::*;\n"; pr "use std::path::PathBuf;\n"; pr "use std::ptr;\n"; pr "use std::slice;\n"; pr "use libnbd_sys::nbd_extent;\n"; pr "\n" let generate_rust_bindings () = generate_header CStyle ~copyright:"Tage Johansson"; pr "\n"; print_rust_imports (); List.iter print_rust_constant constants; pr "\n"; List.iter print_rust_enum all_enums; List.iter print_rust_flags all_flags; List.iter print_metadata_namespace metadata_namespaces; List.iter print_rust_closure_to_raw_fn all_closures; pr "impl Handle {\n"; List.iter print_rust_handle_method handle_calls; pr "}\n\n" (*********************************************************) (* The rest of the file concerns the asynchronous API. *) (* *) (* See the comments in rust/src/async_handle.rs for more *) (* information about how it works. *) (*********************************************************) let excluded_handle_calls : NameSet.t = NameSet.of_list @@ [ "aio_get_fd"; "aio_get_direction"; "clear_debug_callback"; "get_debug"; "set_debug"; "set_debug_callback"; ] @ (handle_calls |> List.filter (fun (_, { modifies_fd }) -> modifies_fd) |> List.map (fun (name, _) -> name)) (* A mapping with names as keys. *) module NameMap = Map.Make (String) (* Strip "aio_" from the beginning of a string. *) let strip_aio name : string = if string_starts_with ~prefix:"aio_" name then String.sub name 4 (String.length name - 4) else failwithf "Asynchronous call %s must begin with aio_" name (* A map with all asynchronous handle calls. The keys are names with "aio_" stripped, the values are a tuple with the actual name (with "aio_"), the [call] and the [async_kind]. *) let async_handle_calls : (string * call * async_kind) NameMap.t = handle_calls |> List.filter (fun (n, _) -> not (NameSet.mem n excluded_handle_calls)) |> filter_map (fun (name, call) -> call.async_kind |> option_map (fun async_kind -> (strip_aio name, (name, call, async_kind)))) |> List.fold_left (fun m (k, v) -> NameMap.add k v m) NameMap.empty (* A mapping with all synchronous (not asynchronous) handle calls. Excluded are also all synchronous calls that have an asynchronous counterpart. So if "foo" is the name of a handle call and an asynchronous call "aio_foo" exists, then "foo" will not be in this map. *) let sync_handle_calls : call NameMap.t = handle_calls |> List.filter (fun (n, _) -> not (NameSet.mem n excluded_handle_calls)) |> List.filter (fun (n, _) -> not (NameMap.mem n async_handle_calls)) |> List.fold_left (fun m (k, v) -> NameMap.add k v m) NameMap.empty (* Get the Rust type for an argument in the asynchronous API. Like [rust_arg_type] but no static lifetime on some buffers. *) let rust_async_arg_type : arg -> string = function | BytesPersistIn _ -> "&[u8]" | BytesPersistOut _ -> "&mut [u8]" | x -> rust_arg_type x (* Get the Rust type for an optional argument in the asynchronous API. Like [rust_optarg_type] but no static lifetime on some closures. *) let rust_async_optarg_type : optarg -> string = function | OClosure x -> sprintf "Option<%s>" (rust_async_arg_type (Closure x)) | x -> rust_optarg_type x (* A string of the argument list for a method on the handle, with both mandatory and optional arguments. *) let rust_async_handle_call_args { args; optargs } : string = let rust_args_names = List.map rust_arg_name args @ List.map rust_optarg_name optargs and rust_args_types = List.map rust_async_arg_type args @ List.map rust_async_optarg_type optargs in String.concat ", " (List.map2 (sprintf "%s: %s") rust_args_names rust_args_types) (* Print the Rust function for a synchronous handle call. *) let print_rust_sync_handle_call name call = print_rust_handle_call_comment name call; pr "pub fn %s(&self, %s) -> %s\n" name (rust_async_handle_call_args call) (rust_ret_type call); print_ffi_call name "self.data.handle.handle" call; pr "\n" (* Print the Rust function for an asynchronous handle call with a completion callback. (Note that "callback" might be abbreviated with "cb" in the following code. *) let print_rust_async_handle_call_with_completion_cb name aio_name call = (* An array of all optional arguments. Useful because we need to deal with the index of the completion callback. *) let optargs = Array.of_list call.optargs in (* The index of the completion callback in [optargs] *) let completion_cb_index = array_find_map (fun (i, optarg) -> match optarg with | OClosure { cbname } -> if cbname = "completion" then Some i else None | _ -> None) (Array.mapi (fun x y -> (x, y)) optargs) in let completion_cb_index = match completion_cb_index with | Some x -> x | None -> failwithf "The handle call %s is claimed to have a completion callback among \ its optional arguments by the async_kind field, but that does not \ seem to be the case." aio_name in let optargs_before_completion_cb = Array.to_list (Array.sub optargs 0 completion_cb_index) and optargs_after_completion_cb = Array.to_list (Array.sub optargs (completion_cb_index + 1) (Array.length optargs - (completion_cb_index + 1))) in (* All optional arguments excluding the completion callback. *) let optargs_without_completion_cb = optargs_before_completion_cb @ optargs_after_completion_cb in print_rust_handle_call_comment name call; pr "pub async fn %s(&self, %s) -> SharedResult<()> {\n" name (rust_async_handle_call_args { call with optargs = optargs_without_completion_cb }); pr " // A oneshot channel to notify when the call is completed.\n"; pr " let (ret_tx, ret_rx) = oneshot::channel::>();\n"; pr " let (ccb_tx, mut ccb_rx) = oneshot::channel::();\n"; (* Completion callback: *) pr " let %s = Some(utils::fn_once_to_fn_mut(|err: &mut i32| {\n" (rust_optarg_name (Array.get optargs completion_cb_index)); pr " ccb_tx.send(*err).ok();\n"; pr " 1\n"; pr " }));\n"; (* End of completion callback. *) print_ffi_call aio_name "self.data.handle.handle" call; pr "?;\n"; pr " let mut ret_tx = Some(ret_tx);\n"; pr " let completion_predicate = \n"; pr " move |_handle: &Handle, res: &SharedResult<()>| {\n"; pr " let ret = match res {\n"; pr " Err(e) if e.is_fatal() => res.clone(),\n"; pr " _ => {\n"; pr " let Ok(errno) = ccb_rx.try_recv() else { return false; };\n"; pr " if errno == 0 {\n"; pr " Ok(())\n"; pr " } else {\n"; pr " if let Err(e) = res {\n"; pr " Err(e.clone())\n"; pr " } else {\n"; pr " Err(Arc::new("; pr " Error::Recoverable(ErrorKind::from_errno(errno))))\n"; pr " }\n"; pr " }\n"; pr " },\n"; pr " };\n"; pr " ret_tx.take().unwrap().send(ret).ok();\n"; pr " true\n"; pr " };\n"; pr " self.add_command(completion_predicate)?;\n"; pr " ret_rx.await.unwrap()\n"; pr "}\n\n" (* Print a Rust function for an asynchronous handle call which signals completion by changing state. The predicate is a call like "aio_is_connecting" which should get the value (like false) for the call to be complete. *) let print_rust_async_handle_call_changing_state name aio_name call (predicate, value) = let value = if value then "true" else "false" in print_rust_handle_call_comment name call; pr "pub async fn %s(&self, %s) -> SharedResult<()>\n" name (rust_async_handle_call_args call); pr "{\n"; print_ffi_call aio_name "self.data.handle.handle" call; pr "?;\n"; pr " let (ret_tx, ret_rx) = oneshot::channel::>();\n"; pr " let mut ret_tx = Some(ret_tx);\n"; pr " let completion_predicate = \n"; pr " move |handle: &Handle, res: &SharedResult<()>| {\n"; pr " let ret = if let Err(_) = res {\n"; pr " res.clone()\n"; pr " } else {\n"; pr " if handle.%s() != %s { return false; }\n" predicate value; pr " else { Ok(()) }\n"; pr " };\n"; pr " ret_tx.take().unwrap().send(ret).ok();\n"; pr " true\n"; pr " };\n"; pr " self.add_command(completion_predicate)?;\n"; pr " ret_rx.await.unwrap()\n"; pr "}\n\n" (* Print an impl with all handle calls. *) let print_rust_async_handle_impls () = pr "impl AsyncHandle {\n"; NameMap.iter print_rust_sync_handle_call sync_handle_calls; async_handle_calls |> NameMap.iter (fun name (aio_name, call, async_kind) -> match async_kind with | WithCompletionCallback -> print_rust_async_handle_call_with_completion_cb name aio_name call | ChangesState (predicate, value) -> print_rust_async_handle_call_changing_state name aio_name call (predicate, value)); pr "}\n\n" let print_rust_async_imports () = pr "use crate::{*, types::*};\n"; pr "use os_socketaddr::OsSocketAddr;\n"; pr "use std::ffi::*;\n"; pr "use std::mem;\n"; pr "use std::net::SocketAddr;\n"; pr "use std::os::fd::{AsRawFd, OwnedFd};\n"; pr "use std::os::unix::prelude::*;\n"; pr "use std::path::PathBuf;\n"; pr "use std::ptr;\n"; pr "use std::sync::Arc;\n"; pr "use tokio::sync::oneshot;\n"; pr "\n" let generate_rust_async_bindings () = generate_header CStyle ~copyright:"Tage Johansson"; pr "\n"; print_rust_async_imports (); print_rust_async_handle_impls () libnbd-1.20.3/generator/generator.ml0000644000175000017500000000573714527200427013035 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* nbd client library in userspace: generator * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Unix open Printf open State_machine open State_machine_generator open Utils let () = if not (Sys.file_exists "lib/handle.c") then failwith "Wrong directory! Don't run this script by hand." (* Write the output files. *) let () = output_to "lib/states.h" State_machine_generator.generate_lib_states_h; output_to "lib/states.c" State_machine_generator.generate_lib_states_c; output_to "lib/states-run.c" State_machine_generator.generate_lib_states_run_c; output_to "lib/libnbd.syms" C.generate_lib_libnbd_syms; output_to "include/libnbd.h" C.generate_include_libnbd_h; output_to "lib/unlocked.h" C.generate_lib_unlocked_h; output_to "lib/api.c" C.generate_lib_api_c; output_to "docs/Makefile.inc" Docs.generate_docs_Makefile_inc; output_to "docs/api-links.pod" Docs.generate_docs_api_links_pod; output_to "docs/api-flag-links.pod" Docs.generate_docs_api_flag_links_pod; List.iter ( fun (name, call) -> output_to (sprintf "docs/nbd_%s.pod" name) (Docs.generate_docs_nbd_pod name call) ) API.handle_calls; output_to "python/methods.h" Python.generate_python_methods_h; output_to "python/libnbdmod.c" Python.generate_python_libnbdmod_c; output_to "python/methods.c" Python.generate_python_methods_c; output_to "python/nbd.py" Python.generate_python_nbd_py; output_to "ocaml/NBD.mli" OCaml.generate_ocaml_nbd_mli; output_to "ocaml/NBD.ml" OCaml.generate_ocaml_nbd_ml; output_to "ocaml/nbd-c.c" OCaml.generate_ocaml_nbd_c; output_to ~formatter:(Some Gofmt) "golang/bindings.go" GoLang.generate_golang_bindings_go; output_to ~formatter:(Some Gofmt) "golang/closures.go" GoLang.generate_golang_closures_go; output_to ~formatter:(Some Gofmt) "golang/wrappers.go" GoLang.generate_golang_wrappers_go; output_to "golang/wrappers.h" GoLang.generate_golang_wrappers_h; output_to ~formatter:(Some Rustfmt) "rust/libnbd-sys/src/generated.rs" RustSys.generate_rust_sys_bindings; output_to ~formatter:(Some Rustfmt) "rust/src/bindings.rs" Rust.generate_rust_bindings; output_to ~formatter:(Some Rustfmt) "rust/src/async_bindings.rs" Rust.generate_rust_async_bindings; libnbd-1.20.3/subdir-rules.mk0000644000175000017500000000337614525371754011507 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. include $(top_srcdir)/common-rules.mk %.cmi: %.mli $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ %.cmo: %.ml $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ if HAVE_OCAMLOPT %.cmx: %.ml $(OCAMLFIND) ocamlopt $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ endif $(top_builddir)/podwrapper.pl: $(top_srcdir)/podwrapper.pl.in $(MAKE) -C $(top_builddir) podwrapper.pl # In tests, include $(MALLOC_CHECKS) in TESTS_ENVIRONMENT to find some # use-after-free and uninitialized read problems when using glibc. # This doesn't affect other libc. random = $(shell bash -c 'echo $$(( 1 + (RANDOM & 255) ))') if HAVE_GLIBC_234 MALLOC_CHECKS = \ LD_PRELOAD="$${LD_PRELOAD:+"$$LD_PRELOAD:"}libc_malloc_debug.so.0" \ GLIBC_TUNABLES=glibc.malloc.check=1:glibc.malloc.perturb=$(random) \ $(NULL) else MALLOC_CHECKS = \ MALLOC_CHECK_=1 \ MALLOC_PERTURB_=$(random) \ $(NULL) endif libnbd-1.20.3/include/0000755000175000017500000000000014675532654010234 5libnbd-1.20.3/include/Makefile.am0000644000175000017500000000167614525371754012216 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk generator_built = libnbd.h EXTRA_DIST = $(generator_built) BUILT_SOURCES = $(generator_built) include_HEADERS = \ libnbd.h \ $(NULL) libnbd-1.20.3/include/libnbd.h0000444000175000017500000010747614603303744011557 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_H #define LIBNBD_H /* This is the public interface to libnbd, a client library for * accessing Network Block Device (NBD) servers. * * Please read the libnbd(3) manual page to * find out how to use this library. */ #include #include #include #ifdef __cplusplus extern "C" { #endif #if defined (__GNUC__) #define LIBNBD_GCC_VERSION \ (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) #endif #ifndef LIBNBD_ATTRIBUTE_NONNULL #if defined (__GNUC__) && LIBNBD_GCC_VERSION >= 120000 /* gcc >= 12.0 */ #define LIBNBD_ATTRIBUTE_NONNULL(...) \ __attribute__ ((__nonnull__ (__VA_ARGS__))) #else #define LIBNBD_ATTRIBUTE_NONNULL(...) #endif #endif /* ! defined LIBNBD_ATTRIBUTE_NONNULL */ #if defined (__GNUC__) && LIBNBD_GCC_VERSION >= 120000 /* gcc >= 12.0 */ #define LIBNBD_ATTRIBUTE_ALLOC_DEALLOC(fn) \ __attribute__ ((__malloc__, __malloc__ (fn, 1))) #else #define LIBNBD_ATTRIBUTE_ALLOC_DEALLOC(fn) #endif struct nbd_handle; #define LIBNBD_TLS_DISABLE 0 #define LIBNBD_TLS_ALLOW 1 #define LIBNBD_TLS_REQUIRE 2 #define LIBNBD_SIZE_MINIMUM 0 #define LIBNBD_SIZE_PREFERRED 1 #define LIBNBD_SIZE_MAXIMUM 2 #define LIBNBD_SIZE_PAYLOAD 3 #define LIBNBD_CMD_FLAG_FUA 0x01U #define LIBNBD_CMD_FLAG_NO_HOLE 0x02U #define LIBNBD_CMD_FLAG_DF 0x04U #define LIBNBD_CMD_FLAG_REQ_ONE 0x08U #define LIBNBD_CMD_FLAG_FAST_ZERO 0x10U #define LIBNBD_CMD_FLAG_PAYLOAD_LEN 0x20U #define LIBNBD_CMD_FLAG_MASK 0x3fU #define LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE 0x01U #define LIBNBD_HANDSHAKE_FLAG_NO_ZEROES 0x02U #define LIBNBD_HANDSHAKE_FLAG_MASK 0x03U #define LIBNBD_STRICT_COMMANDS 0x01U #define LIBNBD_STRICT_FLAGS 0x02U #define LIBNBD_STRICT_BOUNDS 0x04U #define LIBNBD_STRICT_ZERO_SIZE 0x08U #define LIBNBD_STRICT_ALIGN 0x10U #define LIBNBD_STRICT_PAYLOAD 0x20U #define LIBNBD_STRICT_AUTO_FLAG 0x40U #define LIBNBD_STRICT_MASK 0x7fU #define LIBNBD_ALLOW_TRANSPORT_TCP 0x01U #define LIBNBD_ALLOW_TRANSPORT_UNIX 0x02U #define LIBNBD_ALLOW_TRANSPORT_VSOCK 0x04U #define LIBNBD_ALLOW_TRANSPORT_MASK 0x07U #define LIBNBD_SHUTDOWN_ABANDON_PENDING 0x10000U #define LIBNBD_SHUTDOWN_MASK 0x10000U #define LIBNBD_AIO_DIRECTION_READ 1 #define LIBNBD_AIO_DIRECTION_WRITE 2 #define LIBNBD_AIO_DIRECTION_BOTH 3 #define LIBNBD_READ_DATA 1 #define LIBNBD_READ_HOLE 2 #define LIBNBD_READ_ERROR 3 extern void nbd_close (struct nbd_handle *h); /* h can be NULL */ #define LIBNBD_HAVE_NBD_CLOSE 1 extern struct nbd_handle *nbd_create (void) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (nbd_close); #define LIBNBD_HAVE_NBD_CREATE 1 extern const char *nbd_get_error (void); #define LIBNBD_HAVE_NBD_GET_ERROR 1 extern int nbd_get_errno (void); #define LIBNBD_HAVE_NBD_GET_ERRNO 1 /* This is used in the callback for nbd_block_status_64. */ typedef struct { uint64_t length; /* Will not exceed INT64_MAX */ uint64_t flags; } nbd_extent; /* These are used for callback parameters. They are passed * by value not by reference. See CALLBACKS in libnbd(3). */ typedef struct { int (*callback) (void *user_data, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error); void *user_data; void (*free) (void *user_data); } nbd_chunk_callback; #define LIBNBD_HAVE_NBD_CHUNK_CALLBACK 1 typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; #define LIBNBD_HAVE_NBD_COMPLETION_CALLBACK 1 typedef struct { int (*callback) (void *user_data, const char *context, const char *msg); void *user_data; void (*free) (void *user_data); } nbd_debug_callback; #define LIBNBD_HAVE_NBD_DEBUG_CALLBACK 1 typedef struct { int (*callback) (void *user_data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error); void *user_data; void (*free) (void *user_data); } nbd_extent_callback; #define LIBNBD_HAVE_NBD_EXTENT_CALLBACK 1 typedef struct { int (*callback) (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error); void *user_data; void (*free) (void *user_data); } nbd_extent64_callback; #define LIBNBD_HAVE_NBD_EXTENT64_CALLBACK 1 typedef struct { int (*callback) (void *user_data, const char *name, const char *description); void *user_data; void (*free) (void *user_data); } nbd_list_callback; #define LIBNBD_HAVE_NBD_LIST_CALLBACK 1 typedef struct { int (*callback) (void *user_data, const char *name); void *user_data; void (*free) (void *user_data); } nbd_context_callback; #define LIBNBD_HAVE_NBD_CONTEXT_CALLBACK 1 /* Note NBD_NULL_* are only generated for callbacks which are * optional. (See OClosure in the generator). */ #define NBD_NULL_COMPLETION ((nbd_completion_callback) { .callback = NULL }) extern int nbd_set_debug ( struct nbd_handle *h, bool debug ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_DEBUG 1 extern int nbd_get_debug ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_DEBUG 1 extern int nbd_set_debug_callback ( struct nbd_handle *h, nbd_debug_callback debug_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_DEBUG_CALLBACK 1 extern int nbd_clear_debug_callback ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CLEAR_DEBUG_CALLBACK 1 extern uint64_t nbd_stats_bytes_sent ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_STATS_BYTES_SENT 1 extern uint64_t nbd_stats_chunks_sent ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_STATS_CHUNKS_SENT 1 extern uint64_t nbd_stats_bytes_received ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_STATS_BYTES_RECEIVED 1 extern uint64_t nbd_stats_chunks_received ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_STATS_CHUNKS_RECEIVED 1 extern int nbd_set_handle_name ( struct nbd_handle *h, const char *handle_name ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_SET_HANDLE_NAME 1 extern char * nbd_get_handle_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_HANDLE_NAME 1 extern uintptr_t nbd_set_private_data ( struct nbd_handle *h, uintptr_t private_data ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_PRIVATE_DATA 1 extern uintptr_t nbd_get_private_data ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_PRIVATE_DATA 1 extern int nbd_set_export_name ( struct nbd_handle *h, const char *export_name ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_SET_EXPORT_NAME 1 extern char * nbd_get_export_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_EXPORT_NAME 1 extern int nbd_set_request_block_size ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_REQUEST_BLOCK_SIZE 1 extern int nbd_get_request_block_size ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_REQUEST_BLOCK_SIZE 1 extern int nbd_set_full_info ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_FULL_INFO 1 extern int nbd_get_full_info ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_FULL_INFO 1 extern char * nbd_get_canonical_export_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_CANONICAL_EXPORT_NAME 1 extern char * nbd_get_export_description ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION 1 extern int nbd_set_tls ( struct nbd_handle *h, int tls ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_TLS 1 extern int nbd_get_tls ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_TLS 1 extern int nbd_get_tls_negotiated ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_TLS_NEGOTIATED 1 extern int nbd_set_tls_certificates ( struct nbd_handle *h, const char *dir ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_SET_TLS_CERTIFICATES 1 extern int nbd_set_tls_verify_peer ( struct nbd_handle *h, bool verify ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_TLS_VERIFY_PEER 1 extern int nbd_get_tls_verify_peer ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_TLS_VERIFY_PEER 1 extern int nbd_set_tls_username ( struct nbd_handle *h, const char *username ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_SET_TLS_USERNAME 1 extern char * nbd_get_tls_username ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_TLS_USERNAME 1 extern int nbd_set_tls_psk_file ( struct nbd_handle *h, const char *filename ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_SET_TLS_PSK_FILE 1 extern int nbd_set_request_extended_headers ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_REQUEST_EXTENDED_HEADERS 1 extern int nbd_get_request_extended_headers ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_REQUEST_EXTENDED_HEADERS 1 extern int nbd_get_extended_headers_negotiated ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_EXTENDED_HEADERS_NEGOTIATED 1 extern int nbd_set_request_structured_replies ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_REQUEST_STRUCTURED_REPLIES 1 extern int nbd_get_request_structured_replies ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_REQUEST_STRUCTURED_REPLIES 1 extern int nbd_get_structured_replies_negotiated ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_STRUCTURED_REPLIES_NEGOTIATED 1 extern int nbd_set_request_meta_context ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_REQUEST_META_CONTEXT 1 extern int nbd_get_request_meta_context ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_REQUEST_META_CONTEXT 1 extern int nbd_set_handshake_flags ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_HANDSHAKE_FLAGS 1 extern uint32_t nbd_get_handshake_flags ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_HANDSHAKE_FLAGS 1 extern int nbd_set_pread_initialize ( struct nbd_handle *h, bool request ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_PREAD_INITIALIZE 1 extern int nbd_get_pread_initialize ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_PREAD_INITIALIZE 1 extern int nbd_set_strict_mode ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_STRICT_MODE 1 extern uint32_t nbd_get_strict_mode ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_STRICT_MODE 1 extern int nbd_set_opt_mode ( struct nbd_handle *h, bool enable ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_OPT_MODE 1 extern int nbd_get_opt_mode ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_OPT_MODE 1 extern int nbd_opt_go ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_OPT_GO 1 extern int nbd_opt_abort ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_OPT_ABORT 1 extern int nbd_opt_starttls ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_OPT_STARTTLS 1 extern int nbd_opt_extended_headers ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_OPT_EXTENDED_HEADERS 1 extern int nbd_opt_structured_reply ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_OPT_STRUCTURED_REPLY 1 extern int nbd_opt_list ( struct nbd_handle *h, nbd_list_callback list_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_OPT_LIST 1 extern int nbd_opt_info ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_OPT_INFO 1 extern int nbd_opt_list_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_OPT_LIST_META_CONTEXT 1 extern int nbd_opt_list_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_OPT_LIST_META_CONTEXT_QUERIES 1 extern int nbd_opt_set_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_OPT_SET_META_CONTEXT 1 extern int nbd_opt_set_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_OPT_SET_META_CONTEXT_QUERIES 1 extern int nbd_add_meta_context ( struct nbd_handle *h, const char *name ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_ADD_META_CONTEXT 1 extern ssize_t nbd_get_nr_meta_contexts ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_NR_META_CONTEXTS 1 extern char * nbd_get_meta_context ( struct nbd_handle *h, size_t i ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_META_CONTEXT 1 extern int nbd_clear_meta_contexts ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CLEAR_META_CONTEXTS 1 extern int nbd_set_uri_allow_transports ( struct nbd_handle *h, uint32_t mask ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_URI_ALLOW_TRANSPORTS 1 extern int nbd_set_uri_allow_tls ( struct nbd_handle *h, int tls ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_URI_ALLOW_TLS 1 extern int nbd_set_uri_allow_local_file ( struct nbd_handle *h, bool allow ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SET_URI_ALLOW_LOCAL_FILE 1 extern int nbd_connect_uri ( struct nbd_handle *h, const char *uri ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_CONNECT_URI 1 extern int nbd_connect_unix ( struct nbd_handle *h, const char *unixsocket ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_CONNECT_UNIX 1 extern int nbd_connect_vsock ( struct nbd_handle *h, uint32_t cid, uint32_t port ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CONNECT_VSOCK 1 extern int nbd_connect_tcp ( struct nbd_handle *h, const char *hostname, const char *port ) LIBNBD_ATTRIBUTE_NONNULL (1, 2, 3); #define LIBNBD_HAVE_NBD_CONNECT_TCP 1 extern int nbd_connect_socket ( struct nbd_handle *h, int sock ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CONNECT_SOCKET 1 extern int nbd_connect_command ( struct nbd_handle *h, char **argv ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_CONNECT_COMMAND 1 extern int nbd_connect_systemd_socket_activation ( struct nbd_handle *h, char **argv ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_CONNECT_SYSTEMD_SOCKET_ACTIVATION 1 extern int nbd_set_socket_activation_name ( struct nbd_handle *h, const char *socket_name ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_SET_SOCKET_ACTIVATION_NAME 1 extern char * nbd_get_socket_activation_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_SOCKET_ACTIVATION_NAME 1 extern int nbd_is_read_only ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_IS_READ_ONLY 1 extern int nbd_can_flush ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CAN_FLUSH 1 extern int nbd_can_fua ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CAN_FUA 1 extern int nbd_is_rotational ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_IS_ROTATIONAL 1 extern int nbd_can_trim ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CAN_TRIM 1 extern int nbd_can_zero ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CAN_ZERO 1 extern int nbd_can_fast_zero ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CAN_FAST_ZERO 1 extern int nbd_can_block_status_payload ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD 1 extern int nbd_can_df ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CAN_DF 1 extern int nbd_can_multi_conn ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CAN_MULTI_CONN 1 extern int nbd_can_cache ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CAN_CACHE 1 extern int nbd_can_meta_context ( struct nbd_handle *h, const char *metacontext ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_CAN_META_CONTEXT 1 extern const char * nbd_get_protocol ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_PROTOCOL 1 extern int64_t nbd_get_size ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_SIZE 1 extern int64_t nbd_get_block_size ( struct nbd_handle *h, int size_type ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_BLOCK_SIZE 1 extern int nbd_pread ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_PREAD 1 extern int nbd_pread_structured ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_PREAD_STRUCTURED 1 extern int nbd_pwrite ( struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_PWRITE 1 extern int nbd_shutdown ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SHUTDOWN 1 extern int nbd_flush ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_FLUSH 1 extern int nbd_trim ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_TRIM 1 extern int nbd_cache ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CACHE 1 extern int nbd_zero ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_ZERO 1 extern int nbd_block_status ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_BLOCK_STATUS 1 extern int nbd_block_status_64 ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_BLOCK_STATUS_64 1 extern int nbd_block_status_filter ( struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 4); #define LIBNBD_HAVE_NBD_BLOCK_STATUS_FILTER 1 extern int nbd_poll ( struct nbd_handle *h, int timeout ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_POLL 1 extern int nbd_poll2 ( struct nbd_handle *h, int fd, int timeout ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_POLL2 1 extern int nbd_aio_connect ( struct nbd_handle *h, const struct sockaddr *addr, socklen_t addrlen ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_CONNECT 1 extern int nbd_aio_connect_uri ( struct nbd_handle *h, const char *uri ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_CONNECT_URI 1 extern int nbd_aio_connect_unix ( struct nbd_handle *h, const char *unixsocket ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_CONNECT_UNIX 1 extern int nbd_aio_connect_vsock ( struct nbd_handle *h, uint32_t cid, uint32_t port ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_CONNECT_VSOCK 1 extern int nbd_aio_connect_tcp ( struct nbd_handle *h, const char *hostname, const char *port ) LIBNBD_ATTRIBUTE_NONNULL (1, 2, 3); #define LIBNBD_HAVE_NBD_AIO_CONNECT_TCP 1 extern int nbd_aio_connect_socket ( struct nbd_handle *h, int sock ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_CONNECT_SOCKET 1 extern int nbd_aio_connect_command ( struct nbd_handle *h, char **argv ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_CONNECT_COMMAND 1 extern int nbd_aio_connect_systemd_socket_activation ( struct nbd_handle *h, char **argv ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_CONNECT_SYSTEMD_SOCKET_ACTIVATION 1 extern int nbd_aio_opt_go ( struct nbd_handle *h, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_OPT_GO 1 extern int nbd_aio_opt_abort ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_OPT_ABORT 1 extern int nbd_aio_opt_starttls ( struct nbd_handle *h, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_OPT_STARTTLS 1 extern int nbd_aio_opt_extended_headers ( struct nbd_handle *h, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_OPT_EXTENDED_HEADERS 1 extern int nbd_aio_opt_structured_reply ( struct nbd_handle *h, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_OPT_STRUCTURED_REPLY 1 extern int nbd_aio_opt_list ( struct nbd_handle *h, nbd_list_callback list_callback, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_OPT_LIST 1 extern int nbd_aio_opt_info ( struct nbd_handle *h, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_OPT_INFO 1 extern int nbd_aio_opt_list_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_OPT_LIST_META_CONTEXT 1 extern int nbd_aio_opt_list_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_OPT_LIST_META_CONTEXT_QUERIES 1 extern int nbd_aio_opt_set_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_OPT_SET_META_CONTEXT 1 extern int nbd_aio_opt_set_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_OPT_SET_META_CONTEXT_QUERIES 1 extern int64_t nbd_aio_pread ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_PREAD 1 extern int64_t nbd_aio_pread_structured ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_PREAD_STRUCTURED 1 extern int64_t nbd_aio_pwrite ( struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 2); #define LIBNBD_HAVE_NBD_AIO_PWRITE 1 extern int nbd_aio_disconnect ( struct nbd_handle *h, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_DISCONNECT 1 extern int64_t nbd_aio_flush ( struct nbd_handle *h, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_FLUSH 1 extern int64_t nbd_aio_trim ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_TRIM 1 extern int64_t nbd_aio_cache ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_CACHE 1 extern int64_t nbd_aio_zero ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_ZERO 1 extern int64_t nbd_aio_block_status ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS 1 extern int64_t nbd_aio_block_status_64 ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS_64 1 extern int64_t nbd_aio_block_status_filter ( struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags ) LIBNBD_ATTRIBUTE_NONNULL (1, 4); #define LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS_FILTER 1 extern int nbd_aio_get_fd ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_GET_FD 1 extern unsigned nbd_aio_get_direction ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_GET_DIRECTION 1 extern int nbd_aio_notify_read ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_NOTIFY_READ 1 extern int nbd_aio_notify_write ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_NOTIFY_WRITE 1 extern int nbd_aio_is_created ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_IS_CREATED 1 extern int nbd_aio_is_connecting ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_IS_CONNECTING 1 extern int nbd_aio_is_negotiating ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_IS_NEGOTIATING 1 extern int nbd_aio_is_ready ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_IS_READY 1 extern int nbd_aio_is_processing ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_IS_PROCESSING 1 extern int nbd_aio_is_dead ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_IS_DEAD 1 extern int nbd_aio_is_closed ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_IS_CLOSED 1 extern int nbd_aio_command_completed ( struct nbd_handle *h, uint64_t cookie ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_COMMAND_COMPLETED 1 extern int64_t nbd_aio_peek_command_completed ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_PEEK_COMMAND_COMPLETED 1 extern int nbd_aio_in_flight ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_AIO_IN_FLIGHT 1 extern const char * nbd_connection_state ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_CONNECTION_STATE 1 extern const char * nbd_get_package_name ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_PACKAGE_NAME 1 extern const char * nbd_get_version ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_VERSION 1 extern int nbd_kill_subprocess ( struct nbd_handle *h, int signum ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_KILL_SUBPROCESS 1 extern int nbd_supports_tls ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SUPPORTS_TLS 1 extern int nbd_supports_vsock ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SUPPORTS_VSOCK 1 extern int nbd_supports_uri ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_SUPPORTS_URI 1 extern char * nbd_get_uri ( struct nbd_handle *h ) LIBNBD_ATTRIBUTE_ALLOC_DEALLOC (__builtin_free) LIBNBD_ATTRIBUTE_NONNULL (1); #define LIBNBD_HAVE_NBD_GET_URI 1 /* "base" namespace */ #define LIBNBD_NAMESPACE_BASE "base:" /* "base" namespace contexts */ #define LIBNBD_CONTEXT_BASE_ALLOCATION "base:allocation" /* "base:allocation" context related constants */ #define LIBNBD_STATE_HOLE 1 #define LIBNBD_STATE_ZERO 2 /* "qemu" namespace */ #define LIBNBD_NAMESPACE_QEMU "qemu:" /* "qemu" namespace contexts */ #define LIBNBD_CONTEXT_QEMU_DIRTY_BITMAP "qemu:dirty-bitmap:" #define LIBNBD_CONTEXT_QEMU_ALLOCATION_DEPTH "qemu:allocation-depth" /* "qemu:dirty-bitmap:" context related constants */ #define LIBNBD_STATE_DIRTY 1 #ifdef __cplusplus } #endif #endif /* LIBNBD_H */ libnbd-1.20.3/include/Makefile.in0000644000175000017500000005501614675532455012227 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # common-rules.mk is included in every Makefile.am. # subdir-rules.mk is included only in subdirectories. 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used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #undef NDEBUG /* Keep test strong even for nbdkit built without assertions */ #include #include "array-size.h" #include "static-assert.h" struct st { const char *s; int i; }; static const char *s0[] __attribute__ ((__unused__)) = { }; static const char *s1[] __attribute__ ((__unused__)) = { "a" }; static const char *s3[] __attribute__ ((__unused__)) = { "a", "b", "c" }; static const char *s4[4] __attribute__ ((__unused__)) = { "a", "b", "c", "d" }; static int i0[] __attribute__ ((__unused__)) = { }; static int i1[] __attribute__ ((__unused__)) = { 1 }; static int i3[] __attribute__ ((__unused__)) = { 1, 2, 3 }; static int i4[4] __attribute__ ((__unused__)) = { 1, 2, 3, 4 }; static struct st st0[] __attribute__ ((__unused__)) = { }; static struct st st1[] __attribute__ ((__unused__)) = { { "a", 1 } }; static struct st st3[] __attribute__ ((__unused__)) = { { "a", 1 }, { "b", 2 }, { "c", 3 } }; static struct st st4[4] __attribute__ ((__unused__)) = { { "a", 1 }, { "b", 2 }, { "c", 3 }, { "d", 4 } }; static struct st st4_0[4] __attribute__ ((__unused__)); int main (void) { STATIC_ASSERT (ARRAY_SIZE (s0) == 0, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (s1) == 1, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (s3) == 3, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (s4) == 4, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (i0) == 0, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (i1) == 1, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (i3) == 3, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (i4) == 4, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (st0) == 0, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (st1) == 1, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (st3) == 3, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (st4) == 4, _array_size_macro_works); STATIC_ASSERT (ARRAY_SIZE (st4_0) == 4, _array_size_macro_works); /* You can uncomment this to test the negative case. Unfortunately * it's difficult to automate this test. */ #if 0 int *p = i4; STATIC_ASSERT (ARRAY_SIZE (p) == 4, _array_size_macro_is_applied_to_array); #endif exit (EXIT_SUCCESS); } libnbd-1.20.3/common/include/array-size.h0000644000175000017500000000327714525371754013710 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_ARRAY_SIZE_H #define NBDKIT_ARRAY_SIZE_H #include "compiler-macros.h" #define ARRAY_SIZE(a) \ ((sizeof (a) / sizeof ((a)[0])) + BUILD_BUG_UNLESS_TRUE (TYPE_IS_ARRAY (a))) #endif /* NBDKIT_ARRAY_SIZE_H */ libnbd-1.20.3/common/include/test-ascii-ctype.c0000644000175000017500000000621314525371754014775 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #undef NDEBUG /* Keep test strong even for nbdkit built without assertions */ #include #include "ascii-ctype.h" int main (void) { assert (ascii_isspace (' ')); assert (ascii_isspace ('\t')); assert (ascii_isspace ('\n')); assert (! ascii_isspace ('a')); assert (ascii_isalpha ('a')); assert (ascii_isalpha ('Z')); assert (ascii_isalpha ('z')); assert (! ascii_isalpha (' ')); assert (! ascii_isalpha ('0')); { const char *s = "Ä"; assert (! ascii_isalpha (s[0])); } { const char *s = "®"; assert (! ascii_isalpha (s[0])); } assert (ascii_isdigit ('0')); assert (ascii_isdigit ('9')); { const char *s = "Ø"; assert (! ascii_isdigit (s[0])); } /* U+00D8 */ { const char *s = "9"; assert (! ascii_isdigit (s[0])); } /* U+FF19 */ assert (ascii_islower ('a')); assert (ascii_islower ('z')); assert (! ascii_islower ('Z')); { const char *s = "Ä"; assert (! ascii_islower (s[0])); } assert (ascii_isupper ('A')); assert (ascii_isupper ('Z')); assert (! ascii_isupper ('z')); { const char *s = "Ä"; assert (! ascii_isupper (s[0])); } assert (ascii_tolower ('A') == 'a'); assert (ascii_tolower ('Z') == 'z'); assert (ascii_tolower ('a') == 'a'); assert (ascii_tolower ('z') == 'z'); assert (ascii_tolower ('0') == '0'); { const char *s = "Ä"; assert (ascii_tolower (s[0]) == s[0]); } assert (ascii_toupper ('a') == 'A'); assert (ascii_toupper ('z') == 'Z'); assert (ascii_toupper ('A') == 'A'); assert (ascii_toupper ('Z') == 'Z'); assert (ascii_toupper ('0') == '0'); { const char *s = "à"; assert (ascii_toupper (s[0]) == s[0]); } exit (EXIT_SUCCESS); } libnbd-1.20.3/common/include/ascii-ctype.h0000644000175000017500000000607014525371754014026 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Normal ctype functions are affected by the current locale. For * example isupper() might recognize Ä in some but not all locales. * These functions match only 7 bit ASCII characters. */ #ifndef NBDKIT_ASCII_CTYPE_H #define NBDKIT_ASCII_CTYPE_H #define ascii_isalnum(c) (ascii_isalpha (c) || ascii_isdigit (c)) #define ascii_isalpha(c) \ (((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z')) #define ascii_isdigit(c) \ ((c) >= '0' && (c) <= '9') #define ascii_isspace(c) \ ((c) == '\t' || (c) == '\n' || (c) == '\f' || (c) == '\r' || (c) == ' ') #define ascii_isupper(c) \ ((c) >= 'A' && (c) <= 'Z') #define ascii_islower(c) \ ((c) >= 'a' && (c) <= 'z') /* See also hexdigit.h */ #define ascii_isxdigit(c) \ ((c) == '0' || (c) == '1' || (c) == '2' || (c) == '3' || (c) == '4' || \ (c) == '5' || (c) == '6' || (c) == '7' || (c) == '8' || (c) == '9' || \ (c) == 'a' || (c) == 'b' || (c) == 'c' || \ (c) == 'd' || (c) == 'e' || (c) == 'f' || \ (c) == 'A' || (c) == 'B' || (c) == 'C' || \ (c) == 'D' || (c) == 'E' || (c) == 'F') #define ascii_tolower(c) \ (ascii_isupper ((c)) ? (c) + 32 : (c)) #define ascii_toupper(c) \ (ascii_islower ((c)) ? (c) - 32 : (c)) #define ascii_isprint(c) ((c) >= 32 && (c) <= 126) #endif /* NBDKIT_ASCII_CTYPE_H */ libnbd-1.20.3/common/include/test-byte-swapping.c0000644000175000017500000000670614525371754015363 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #undef NDEBUG /* Keep test strong even for nbdkit built without assertions */ #include #include "byte-swapping.h" /* Little-endian test strings. */ static uint8_t le16[] = { 0x34, 0x12 }; static uint8_t le32[] = { 0x78, 0x56, 0x34, 0x12 }; static uint8_t le64[] = { 0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12 }; /* Big-endian test strings. */ static uint8_t be16[] = { 0x12, 0x34 }; static uint8_t be32[] = { 0x12, 0x34, 0x56, 0x78 }; static uint8_t be64[] = { 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0 }; int main (void) { uint16_t i16; uint32_t i32; uint64_t i64; memcpy (&i16, le16, 2); assert (le16toh (i16) == 0x1234); memcpy (&i32, le32, 4); assert (le32toh (i32) == 0x12345678); memcpy (&i64, le64, 8); assert (le64toh (i64) == 0x123456789abcdef0); memcpy (&i16, be16, 2); assert (be16toh (i16) == 0x1234); memcpy (&i32, be32, 4); assert (be32toh (i32) == 0x12345678); memcpy (&i64, be64, 8); assert (be64toh (i64) == 0x123456789abcdef0); i16 = htole16 (0x1234); assert (memcmp (&i16, le16, 2) == 0); i32 = htole32 (0x12345678); assert (memcmp (&i32, le32, 4) == 0); i64 = htole64 (0x123456789abcdef0); assert (memcmp (&i64, le64, 8) == 0); i16 = htobe16 (0x1234); assert (memcmp (&i16, be16, 2) == 0); i32 = htobe32 (0x12345678); assert (memcmp (&i32, be32, 4) == 0); i64 = htobe64 (0x123456789abcdef0); assert (memcmp (&i64, be64, 8) == 0); memcpy (&i16, le16, 2); i16 = bswap_16 (i16); assert (memcmp (&i16, be16, 2) == 0); i16 = bswap_16 (i16); assert (memcmp (&i16, le16, 2) == 0); memcpy (&i32, le32, 4); i32 = bswap_32 (i32); assert (memcmp (&i32, be32, 4) == 0); i32 = bswap_32 (i32); assert (memcmp (&i32, le32, 4) == 0); memcpy (&i64, le64, 8); i64 = bswap_64 (i64); assert (memcmp (&i64, be64, 8) == 0); i64 = bswap_64 (i64); assert (memcmp (&i64, le64, 8) == 0); exit (EXIT_SUCCESS); } libnbd-1.20.3/common/include/byte-swapping.h0000644000175000017500000001001614525371754014400 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* The job of this header is to define macros (or functions) called * things like 'htobe32' and 'le64toh' which byte swap N-bit integers * between host representation, and little and big endian. Also * bswap_16, bswap_32 and bswap_64 which simply swap endianness. * * The core code and plugins in nbdkit uses these names and relies on * this header to provide the platform-specific implementation. On * GNU/Linux these are defined in and but * other platforms have other requirements. */ #ifndef NBDKIT_BYTE_SWAPPING_H #define NBDKIT_BYTE_SWAPPING_H #ifdef HAVE_BYTESWAP_H #include #endif #ifdef HAVE_ENDIAN_H #include #endif #ifdef HAVE_SYS_ENDIAN_H #include #endif #ifdef __HAIKU__ #include #define htobe16(x) B_HOST_TO_BENDIAN_INT16 (x) #define htole16(x) B_HOST_TO_LENDIAN_INT16 (x) #define be16toh(x) B_BENDIAN_TO_HOST_INT16 (x) #define le16toh(x) B_LENDIAN_TO_HOST_INT16 (x) #define htobe32(x) B_HOST_TO_BENDIAN_INT32 (x) #define htole32(x) B_HOST_TO_LENDIAN_INT32 (x) #define be32toh(x) B_BENDIAN_TO_HOST_INT32 (x) #define le32toh(x) B_LENDIAN_TO_HOST_INT32 (x) #define htobe64(x) B_HOST_TO_BENDIAN_INT64 (x) #define htole64(x) B_HOST_TO_LENDIAN_INT64 (x) #define be64toh(x) B_BENDIAN_TO_HOST_INT64 (x) #define le64toh(x) B_LENDIAN_TO_HOST_INT64 (x) #endif /* If we didn't define bswap_16, bswap_32 and bswap_64 already above, * create macros. GCC >= 4.8 and Clang have builtins. */ #ifndef bswap_16 #define bswap_16 __builtin_bswap16 #endif #ifndef bswap_32 #define bswap_32 __builtin_bswap32 #endif #ifndef bswap_64 #define bswap_64 __builtin_bswap64 #endif /* If we didn't define htobe* above then define them in terms of * bswap_* macros. */ #ifndef htobe32 # ifndef WORDS_BIGENDIAN /* little endian */ # define htobe16(x) bswap_16 (x) # define htole16(x) (x) # define be16toh(x) bswap_16 (x) # define le16toh(x) (x) # define htobe32(x) bswap_32 (x) # define htole32(x) (x) # define be32toh(x) bswap_32 (x) # define le32toh(x) (x) # define htobe64(x) bswap_64 (x) # define htole64(x) (x) # define be64toh(x) bswap_64 (x) # define le64toh(x) (x) # else /* big endian */ # define htobe16(x) (x) # define htole16(x) bswap_16 (x) # define be16toh(x) (x) # define le16toh(x) bswap_16 (x) # define htobe32(x) (x) # define htole32(x) bswap_32 (x) # define be32toh(x) (x) # define le32toh(x) bswap_32 (x) # define htobe64(x) (x) # define htole64(x) bswap_64 (x) # define be64toh(x) (x) # define le64toh(x) bswap_64 (x) # endif #endif #endif /* NBDKIT_BYTE_SWAPPING_H */ libnbd-1.20.3/common/include/test-checked-overflow.c0000644000175000017500000001726714616437241016020 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #undef NDEBUG /* Keep test strong even for nbdkit built without assertions */ #include #include "checked-overflow.h" #define TEST_ADD(a, b, result, expected_overflow, expected_result) \ do { \ bool actual_overflow; \ \ actual_overflow = ADD_OVERFLOW_FALLBACK ((a), (b), (result)); \ assert (actual_overflow == (expected_overflow)); \ assert (*(result) == (expected_result)); \ actual_overflow = ADD_OVERFLOW_FALLBACK ((b), (a), (result)); \ assert (actual_overflow == (expected_overflow)); \ assert (*(result) == (expected_result)); \ } while (0) #define TEST_MUL(a, b, result, expected_overflow, expected_result) \ do { \ bool actual_overflow; \ \ actual_overflow = MUL_OVERFLOW_FALLBACK ((a), (b), (result)); \ assert (actual_overflow == (expected_overflow)); \ assert (*(result) == (expected_result)); \ actual_overflow = MUL_OVERFLOW_FALLBACK ((b), (a), (result)); \ assert (actual_overflow == (expected_overflow)); \ assert (*(result) == (expected_result)); \ } while (0) /* Define these const-qualified objects because the UINTN_MAX object-like * macros in have "post integer promotion" types. Therefore, * UINT16_MAX and UINT8_MAX most commonly have type "int". And that trips the * signedness check in ADD_OVERFLOW_FALLBACK(). */ static const uintmax_t umax_max = UINTMAX_MAX; static const uint64_t u64_max = UINT64_MAX; static const uint32_t u32_max = UINT32_MAX; static const uint16_t u16_max = UINT16_MAX; static const uint8_t u8_max = UINT8_MAX; static const size_t size_max = SIZE_MAX; int main (void) { union { uintmax_t umax; uint64_t u64; uint32_t u32; uint16_t u16; uint8_t u8; size_t sz; } result; bool overflow; /* "max + 0" and "0 + max" evaluate to "max", without overflow. */ TEST_ADD (umax_max, 0u, &result.umax, false, umax_max); TEST_ADD (u64_max, 0u, &result.u64, false, u64_max); TEST_ADD (u32_max, 0u, &result.u32, false, u32_max); TEST_ADD (u16_max, 0u, &result.u16, false, u16_max); TEST_ADD (u8_max, 0u, &result.u8, false, u8_max); TEST_ADD (size_max, 0u, &result.sz, false, size_max); /* "max + 1" and "1 + max" overflow to zero. */ TEST_ADD (umax_max, 1u, &result.umax, true, 0); TEST_ADD (u64_max, 1u, &result.u64, true, 0); TEST_ADD (u32_max, 1u, &result.u32, true, 0); TEST_ADD (u16_max, 1u, &result.u16, true, 0); TEST_ADD (u8_max, 1u, &result.u8, true, 0); TEST_ADD (size_max, 1u, &result.sz, true, 0); /* Adding umax_max (i.e., all-bits-one) amounts (with overflow) to * subtracting one. */ TEST_ADD (umax_max, umax_max, &result.umax, true, umax_max - 1); TEST_ADD (u64_max, umax_max, &result.u64, true, u64_max - 1); TEST_ADD (u32_max, umax_max, &result.u32, true, u32_max - 1); TEST_ADD (u16_max, umax_max, &result.u16, true, u16_max - 1); TEST_ADD (u8_max, umax_max, &result.u8, true, u8_max - 1); TEST_ADD (size_max, umax_max, &result.sz, true, size_max - 1); /* "max * 0" and "0 * max" evaluate to 0, without overflow. */ TEST_MUL (umax_max, 0u, &result.umax, false, 0); TEST_MUL (u64_max, 0u, &result.u64, false, 0); TEST_MUL (u32_max, 0u, &result.u32, false, 0); TEST_MUL (u16_max, 0u, &result.u16, false, 0); TEST_MUL (u8_max, 0u, &result.u8, false, 0); TEST_MUL (size_max, 0u, &result.sz, false, 0); /* "max * 1" and "1 * max" evaluate to "max", without overflow. */ TEST_MUL (umax_max, 1u, &result.umax, false, umax_max); TEST_MUL (u64_max, 1u, &result.u64, false, u64_max); TEST_MUL (u32_max, 1u, &result.u32, false, u32_max); TEST_MUL (u16_max, 1u, &result.u16, false, u16_max); TEST_MUL (u8_max, 1u, &result.u8, false, u8_max); TEST_MUL (size_max, 1u, &result.sz, false, size_max); /* "max * 2" and "2 * max" evaluate (with overflow) to "max - 1". */ TEST_MUL (umax_max, 2u, &result.umax, true, umax_max - 1); TEST_MUL (u64_max, 2u, &result.u64, true, u64_max - 1); TEST_MUL (u32_max, 2u, &result.u32, true, u32_max - 1); TEST_MUL (u16_max, 2u, &result.u16, true, u16_max - 1); TEST_MUL (u8_max, 2u, &result.u8, true, u8_max - 1); TEST_MUL (size_max, 2u, &result.sz, true, size_max - 1); /* factor 255 -> 3 5 17 * factor 65535 -> 3 5 17 257 * factor 4294967295 -> 3 5 17 257 65537 * factor 18446744073709551615 -> 3 5 17 257 641 65537 6700417 * * Note: every time we double the width, we multiply the previous maximum * 0xF...F with 0x10...01: * * 0xF (= 3 * 5) * 0x11 (= 17) = 0xFF * 0xFF * 0x101 (= 257) = 0xFFFF * 0xFFFF * 0x10001 (= 65537) = 0xFFFFFFFF * 0xFFFFFFFF * 0x100000001 (= 641 * 6700417) = 0xFFFFFFFFFFFFFFFF * * Perform the above multiplications, advacing with prime factors. */ overflow = MUL_OVERFLOW_FALLBACK (3u, 5u, &result.u8); assert (!overflow); assert (result.u8 == 0xF); overflow = MUL_OVERFLOW_FALLBACK (result.u8, 17u, &result.u8); assert (!overflow); assert (result.u8 == UINT8_MAX); overflow = MUL_OVERFLOW_FALLBACK (result.u8, 257u, &result.u16); assert (!overflow); assert (result.u16 == UINT16_MAX); overflow = MUL_OVERFLOW_FALLBACK (result.u16, 65537ul, &result.u32); assert (!overflow); assert (result.u32 == UINT32_MAX); overflow = MUL_OVERFLOW_FALLBACK (result.u32, 641u, &result.u64); assert (!overflow); overflow = MUL_OVERFLOW_FALLBACK (result.u64, 6700417ul, &result.u64); assert (!overflow); assert (result.u64 == UINT64_MAX); return 0; } libnbd-1.20.3/common/include/checked-overflow.h0000644000175000017500000002107214525371754015042 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* This header file defines macros and functions for checking overflow in * common integer arithmetic operations. * * The macros use: * - the "statement expression" GCC extension, * - the "typeof" GCC extension, * - the __builtin_add_overflow() and __builtin_mul_overflow() GCC/Clang * built-ins. * * If either built-in is unavailable, the corresponding macro replaces it with * a call to an inline C function. */ #ifndef NBDKIT_CHECKED_OVERFLOW_H #define NBDKIT_CHECKED_OVERFLOW_H #if !defined (__GNUC__) && !defined (__clang__) #error "this file may need to be ported to your compiler" #endif #include #include #include "static-assert.h" #include "unique-name.h" /* Add "a" and "b", both of (possibly different) unsigned integer types, and * store the sum in "*r", which must also have some unsigned integer type. * * Each macro argument is evaluated exactly once, as long as it does not have * variably modified type. * * The macro evaluates to "false" if "*r" can represent the mathematical sum. * Otherwise, the macro evaluates to "true", and the low order bits of the * mathematical sum are stored to "*r". */ #if HAVE_DECL___BUILTIN_ADD_OVERFLOW #define ADD_OVERFLOW(a, b, r) ADD_OVERFLOW_BUILTIN ((a), (b), (r)) #else #define ADD_OVERFLOW(a, b, r) ADD_OVERFLOW_FALLBACK ((a), (b), (r)) #endif /* Multiply "a" and "b", both of (possibly different) unsigned integer types, * and store the product in "*r", which must also have some unsigned integer * type. * * Each macro argument is evaluated exactly once, as long as it does not have * variably modified type. * * The macro evaluates to "false" if "*r" can represent the mathematical * product. Otherwise, the macro evaluates to "true", and the low order bits of * the mathematical product are stored to "*r". */ #if HAVE_DECL___BUILTIN_MUL_OVERFLOW #define MUL_OVERFLOW(a, b, r) MUL_OVERFLOW_BUILTIN ((a), (b), (r)) #else #define MUL_OVERFLOW(a, b, r) MUL_OVERFLOW_FALLBACK ((a), (b), (r)) #endif /* The ADD_OVERFLOW_BUILTIN and MUL_OVERFLOW_BUILTIN function-like macros * enforce the unsignedness of all their operands even though the underlying * compiler built-ins, __builtin_add_overflow() and __builtin_mul_overflow(), * don't depend on that. The explanation is that the fallback implementation * does depend on the unsignedness of all operands, and the codebase should * seamlessly build regardless of the built-in vs. fallback choice. * * Each macro argument is evaluated exactly once, as long as it does not have * variably modified type. */ #if HAVE_DECL___BUILTIN_ADD_OVERFLOW #define ADD_OVERFLOW_BUILTIN(a, b, r) \ ({ \ STATIC_ASSERT_UNSIGNED_INT (a); \ STATIC_ASSERT_UNSIGNED_INT (b); \ STATIC_ASSERT_UNSIGNED_INT (*(r)); \ __builtin_add_overflow ((a), (b), (r)); \ }) #endif #if HAVE_DECL___BUILTIN_MUL_OVERFLOW #define MUL_OVERFLOW_BUILTIN(a, b, r) \ ({ \ STATIC_ASSERT_UNSIGNED_INT (a); \ STATIC_ASSERT_UNSIGNED_INT (b); \ STATIC_ASSERT_UNSIGNED_INT (*(r)); \ __builtin_mul_overflow ((a), (b), (r)); \ }) #endif /* The fallback macros call inline C functions. The unsignedness of all * operands is enforced in order to keep the conversion to uintmax_t * value-preserving, and to keep the conversion back from uintmax_t independent * of the C language implementation. * * Each macro argument is evaluated exactly once, as long as it does not have * variably modified type. * * The fallback macros and the inline C functions are defined regardless of * HAVE_DECL___BUILTIN_ADD_OVERFLOW and HAVE_DECL___BUILTIN_MUL_OVERFLOW so * that the test suite can always test the fallback. */ #define ADD_OVERFLOW_FALLBACK(a, b, r) \ ADD_OVERFLOW_FALLBACK_1 ((a), (b), (r), \ NBDKIT_UNIQUE_NAME (_overflow), \ NBDKIT_UNIQUE_NAME (_tmp)) #define ADD_OVERFLOW_FALLBACK_1(a, b, r, overflow, tmp) \ ({ \ bool overflow; \ uintmax_t tmp; \ \ STATIC_ASSERT_UNSIGNED_INT (a); \ STATIC_ASSERT_UNSIGNED_INT (b); \ STATIC_ASSERT_UNSIGNED_INT (*(r)); \ overflow = check_add_overflow ((a), (b), \ (typeof (*(r)))-1, \ &tmp); \ *(r) = tmp; \ overflow; \ }) #define MUL_OVERFLOW_FALLBACK(a, b, r) \ MUL_OVERFLOW_FALLBACK_1 ((a), (b), (r), \ NBDKIT_UNIQUE_NAME (_overflow), \ NBDKIT_UNIQUE_NAME (_tmp)) #define MUL_OVERFLOW_FALLBACK_1(a, b, r, overflow, tmp) \ ({ \ bool overflow; \ uintmax_t tmp; \ \ STATIC_ASSERT_UNSIGNED_INT (a); \ STATIC_ASSERT_UNSIGNED_INT (b); \ STATIC_ASSERT_UNSIGNED_INT (*(r)); \ overflow = check_mul_overflow ((a), (b), \ (typeof (*(r)))-1, \ &tmp); \ *(r) = tmp; \ overflow; \ }) /* Assert, at compile time, that the expression "x" has some unsigned integer * type. * * The expression "x" is not evaluated, unless it has variably modified type. */ #define STATIC_ASSERT_UNSIGNED_INT(x) \ STATIC_ASSERT ((typeof (x))-1 > 0, _x_has_uint_type) /* Assign the sum "a + b" to "*r", using uintmax_t modular arithmetic. * * Return true iff the addition overflows or the result exceeds "max". */ static inline bool check_add_overflow (uintmax_t a, uintmax_t b, uintmax_t max, uintmax_t *r) { bool in_range; *r = a + b; in_range = a <= UINTMAX_MAX - b && *r <= max; return !in_range; } /* Assign the product "a * b" to "*r", using uintmax_t modular arithmetic. * * Return true iff the multiplication overflows or the result exceeds "max". */ static inline bool check_mul_overflow (uintmax_t a, uintmax_t b, uintmax_t max, uintmax_t *r) { bool in_range; *r = a * b; in_range = b == 0 || (a <= UINTMAX_MAX / b && *r <= max); return !in_range; } #endif /* NBDKIT_CHECKED_OVERFLOW_H */ libnbd-1.20.3/common/include/test-human-size.c0000644000175000017500000001030014616437241014626 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include #include "array-size.h" #include "human-size.h" #include "human-size-test-cases.h" /* defines 'pairs' below */ static unsigned errors = 0; /* Test the human_size_parse function. */ static void test1 (void) { size_t i; for (i = 0; i < ARRAY_SIZE (pairs); i++) { const char *error = NULL, *pstr = NULL; int64_t r; r = human_size_parse (pairs[i].str, &error, &pstr); if (r != pairs[i].res) { fprintf (stderr, "Wrong parse for %s, got %" PRId64 ", expected %" PRId64 "\n", pairs[i].str, r, pairs[i].res); errors++; } if (r == -1) { if (error == NULL || pstr == NULL) { fprintf (stderr, "Wrong error message handling for %s\n", pairs[i].str); errors++; } } } } /* Test the human_size function. */ static void test2_run (uint64_t bytes, const char *expected, bool expected_human_flag) { char actual[HUMAN_SIZE_LONGEST]; bool actual_human_flag; human_size (actual, bytes, &actual_human_flag); if (strcmp (actual, expected) == 0 && actual_human_flag == expected_human_flag) { printf ("test-human-size: %" PRIu64 " -> \"%s\" (%s) OK\n", bytes, actual, actual_human_flag ? "true" : "false"); fflush (stdout); } else { fprintf (stderr, "test-human-size: error: test case %" PRIu64 " " "expected \"%s\" (%s) " "but returned \"%s\" (%s)\n", bytes, expected, expected_human_flag ? "true" : "false", actual, actual_human_flag ? "true" : "false"); errors++; } } static void test2 (void) { test2_run (0, "0", false); test2_run (1, "1", false); test2_run (512, "512", false); test2_run (1023, "1023", false); test2_run (1024, "1K", true); test2_run (1025, "1025", false); test2_run (2047, "2047", false); test2_run (2048, "2K", true); test2_run (3 * 1024, "3K", true); test2_run (1023 * 1024, "1023K", true); test2_run (1048575, "1048575", false); test2_run (1048576, "1M", true); test2_run (1048577, "1048577", false); test2_run (UINT64_C (1073741824), "1G", true); test2_run (UINT64_C (1099511627776), "1T", true); test2_run (UINT64_C (1099511627777), "1099511627777", false); test2_run (UINT64_C (1099511627776) + 1024, "1073741825K", true); test2_run (UINT64_C (1125899906842624), "1P", true); test2_run ((uint64_t)INT64_MAX+1, "8E", true); test2_run (UINT64_MAX-1023, "18014398509481983K", true); test2_run (UINT64_MAX, "18446744073709551615", false); } int main (int argc, char *argv[]) { test1 (); test2 (); exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE); } libnbd-1.20.3/common/include/human-size.h0000644000175000017500000001233014616437241013663 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_HUMAN_SIZE_H #define NBDKIT_HUMAN_SIZE_H #include #include #include #include /* Attempt to parse a string with a possible scaling suffix, such as * "2M". Disk sizes cannot usefully exceed off_t (which is signed) * and cannot be negative. * * On error, returns -1 and sets *error and *pstr. You can form a * final error message by appending ": ". */ static inline int64_t human_size_parse (const char *str, const char **error, const char **pstr) { int64_t size; char *end; uint64_t scale = 1; /* XXX Should we also parse things like '1.5M'? */ /* XXX Should we allow hex? If so, hex cannot use scaling suffixes, * because some of them are valid hex digits. */ errno = 0; size = strtoimax (str, &end, 10); if (str == end) { *error = "could not parse size string"; *pstr = str; return -1; } if (size < 0) { *error = "size cannot be negative"; *pstr = str; return -1; } if (errno) { *error = "size exceeds maximum value"; *pstr = str; return -1; } switch (*end) { /* No suffix */ case '\0': end--; /* Safe, since we already filtered out empty string */ break; /* Powers of 1024 */ case 'e': case 'E': scale *= 1024; /* fallthru */ case 'p': case 'P': scale *= 1024; /* fallthru */ case 't': case 'T': scale *= 1024; /* fallthru */ case 'g': case 'G': scale *= 1024; /* fallthru */ case 'm': case 'M': scale *= 1024; /* fallthru */ case 'k': case 'K': scale *= 1024; /* fallthru */ case 'b': case 'B': break; /* "sectors", ie. units of 512 bytes, even if that's not the real * sector size */ case 's': case 'S': scale = 512; break; default: *error = "could not parse size: unknown suffix"; *pstr = end; return -1; } /* XXX Maybe we should support 'MiB' as a synonym for 'M'; and 'MB' * for powers of 1000, for similarity to GNU tools. But for now, * anything beyond 'M' is dropped. */ if (end[1]) { *error = "could not parse size: unknown suffix"; *pstr = end; return -1; } if (INT64_MAX / scale < size) { *error = "could not parse size: size * scale overflows"; *pstr = str; return -1; } return size * scale; } /* If you allocate a buffer of at least this length in bytes and pass * it as the first parameter to human_size, then it will not overrun. */ #define HUMAN_SIZE_LONGEST 64 /* Convert bytes to a human-readable string. * * This is roughly the opposite of nbdkit_parse_size. It will convert * multiples of powers of 1024 to the appropriate human size with the * right extension like 'M' or 'G'. Anything that cannot be converted * is returned as bytes. The *human flag is set to true if the output * was abbreviated to a human-readable size, or false if it is just * bytes. * * If buf == NULL, a buffer is allocated and returned. In this case * the returned buffer must be freed. * * buf may also be allocated by the caller, in which case it must be * at least HUMAN_SIZE_LONGEST bytes. * * On error the function returns an error and sets errno. */ static inline char * human_size (char *buf, uint64_t bytes, bool *human) { static const char ext[] = "EPTGMK"; size_t i; if (buf == NULL) { buf = malloc (HUMAN_SIZE_LONGEST); if (buf == NULL) return NULL; } /* Work out which extension to use, if any. */ i = 6; while (bytes && (bytes & 1023) == 0) { bytes >>= 10; i--; } /* Set the flag to true if we're going to add a human-readable extension. */ if (human) *human = ext[i] != '\0'; snprintf (buf, HUMAN_SIZE_LONGEST, "%" PRIu64 "%.1s", bytes, &ext[i]); return buf; } #endif /* NBDKIT_HUMAN_SIZE_H */ libnbd-1.20.3/common/include/human-size-test-cases.h0000644000175000017500000000700614525371754015745 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_HUMAN_SIZE_TEST_CASES_H #define NBDKIT_HUMAN_SIZE_TEST_CASES_H #include /* Just some common test cases shared (in nbdkit) between * common/include/test-human-size.c and server/test-public.c */ static struct pair { const char *str; int64_t res; } pairs[] = { /* Bogus strings */ { "", -1 }, { "0x0", -1 }, { "garbage", -1 }, { "0garbage", -1 }, { "8E", -1 }, { "8192P", -1 }, /* Strings leading to overflow */ { "9223372036854775808", -1 }, /* INT_MAX + 1 */ { "18446744073709551614", -1 }, /* UINT64_MAX - 1 */ { "18446744073709551615", -1 }, /* UINT64_MAX */ { "18446744073709551616", -1 }, /* UINT64_MAX + 1 */ { "999999999999999999999999", -1 }, /* Strings representing negative values */ { "-1", -1 }, { "-2", -1 }, { "-9223372036854775809", -1 }, /* INT64_MIN - 1 */ { "-9223372036854775808", -1 }, /* INT64_MIN */ { "-9223372036854775807", -1 }, /* INT64_MIN + 1 */ { "-18446744073709551616", -1 }, /* -UINT64_MAX - 1 */ { "-18446744073709551615", -1 }, /* -UINT64_MAX */ { "-18446744073709551614", -1 }, /* -UINT64_MAX + 1 */ /* Strings we may want to support in the future */ { "M", -1 }, { "1MB", -1 }, { "1MiB", -1 }, { "1.5M", -1 }, /* Valid strings */ { "-0", 0 }, { "0", 0 }, { "+0", 0 }, { " 08", 8 }, { "1", 1 }, { "+1", 1 }, { "1234567890", 1234567890 }, { "+1234567890", 1234567890 }, { "9223372036854775807", INT64_MAX }, { "1s", 512 }, { "2S", 1024 }, { "1b", 1 }, { "1B", 1 }, { "1k", 1024 }, { "1K", 1024 }, { "1m", 1024 * 1024 }, { "1M", 1024 * 1024 }, { "+1M", 1024 * 1024 }, { "1g", 1024 * 1024 * 1024 }, { "1G", 1024 * 1024 * 1024 }, { "1t", 1024LL * 1024 * 1024 * 1024 }, { "1T", 1024LL * 1024 * 1024 * 1024 }, { "1p", 1024LL * 1024 * 1024 * 1024 * 1024 }, { "1P", 1024LL * 1024 * 1024 * 1024 * 1024 }, { "8191p", 1024LL * 1024 * 1024 * 1024 * 1024 * 8191 }, { "1e", 1024LL * 1024 * 1024 * 1024 * 1024 * 1024 }, { "1E", 1024LL * 1024 * 1024 * 1024 * 1024 * 1024 }, }; #endif /* NBDKIT_HUMAN_SIZE_TEST_CASES_H */ libnbd-1.20.3/common/include/test-isaligned.c0000644000175000017500000000406014525371754014520 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #undef NDEBUG /* Keep test strong even for nbdkit built without assertions */ #include #include "isaligned.h" int main (void) { uint64_t i; for (i = 1; i <= 0x80000000; i <<= 1) { assert (IS_ALIGNED (0, i)); assert (IS_ALIGNED (i, i)); assert (IS_ALIGNED (i*2, i)); assert (IS_ALIGNED (i*3, i)); assert (IS_ALIGNED (i*4, i)); if (i > 1) { assert (! IS_ALIGNED (i-1, i)); assert (! IS_ALIGNED (i/2, i)); } } exit (EXIT_SUCCESS); } libnbd-1.20.3/common/include/isaligned.h0000644000175000017500000000351314525371754013552 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_ISALIGNED_H #define NBDKIT_ISALIGNED_H #include #include "ispowerof2.h" /* Return true if size is a multiple of align. align must be power of 2. */ #define IS_ALIGNED(size, align) ({ \ assert (is_power_of_2 ((align))); \ !((size) & ((align) - 1)); \ }) #endif /* NBDKIT_ISALIGNED_H */ libnbd-1.20.3/common/include/test-ispowerof2.c0000644000175000017500000000463614525371754014671 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #undef NDEBUG /* Keep test strong even for nbdkit built without assertions */ #include #include "ispowerof2.h" int main (void) { uint64_t i; assert (! is_power_of_2 (0)); /* is_power_of_2 is only defined for unsigned long type, which is * 32 bit on 32 bit platforms. We need to store i in a 64 bit type * so the loops don't wrap around. */ for (i = 1; i <= 0x80000000; i <<= 1) assert (is_power_of_2 (i)); for (i = 4; i <= 0x80000000; i <<= 1) assert (! is_power_of_2 (i-1)); /* Check log_2_bits on some known values. */ assert (log_2_bits (1) == 0); assert (log_2_bits (512) == 9); assert (log_2_bits (4096) == 12); assert (log_2_bits (0x80000000) == 31); #if SIZEOF_LONG == 8 assert (log_2_bits (0x100000000) == 32); assert (log_2_bits (0x8000000000000000) == 63); #endif exit (EXIT_SUCCESS); } libnbd-1.20.3/common/include/ispowerof2.h0000644000175000017500000000421014525371754013705 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_ISPOWEROF2_H #define NBDKIT_ISPOWEROF2_H #include /* Returns true if v is a power of 2. * * Uses the algorithm described at * http://graphics.stanford.edu/~seander/bithacks.html#DetermineIfPowerOf2 */ static inline bool is_power_of_2 (unsigned long v) { return v && ((v & (v - 1)) == 0); } /* Calculate log2(v) which is the size of the equivalent bit shift * for a power of 2. For example log_2_bits (512) == 9. * * Note this is undefined for v == 0. * * __builtin_clzl is available in GCC and clang. */ static inline int log_2_bits (unsigned long v) { return SIZEOF_LONG*8 - __builtin_clzl (v) - 1; } #endif /* NBDKIT_ISPOWEROF2_H */ libnbd-1.20.3/common/include/test-iszero.c0000644000175000017500000000407014525371754014075 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #undef NDEBUG /* Keep test strong even for nbdkit built without assertions */ #include #include "iszero.h" int main (void) { char *buf; size_t i, j; buf = malloc (256); if (buf == NULL) { perror ("malloc"); exit (EXIT_FAILURE); } memset (buf, 0, 256); for (j = 0; j <= 16; ++j) { for (i = 0; i <= 16; ++i) assert (is_zero (&buf[j], i)); for (i = 0; i <= 16; ++i) assert (is_zero (&buf[j], 256-j-i)); } free (buf); exit (EXIT_SUCCESS); } libnbd-1.20.3/common/include/iszero.h0000644000175000017500000000427514525371754013134 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_ISZERO_H #define NBDKIT_ISZERO_H #include #include /* Return true iff the buffer is all zero bytes. * * The clever approach here was suggested by Eric Blake. See: * https://www.redhat.com/archives/libguestfs/2017-April/msg00171.html * https://rusty.ozlabs.org/?p=560 * * See also: * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69908 */ static inline bool __attribute__ ((__nonnull__ (1))) is_zero (const char *buffer, size_t size) { size_t i; const size_t limit = size < 16 ? size : 16; for (i = 0; i < limit; ++i) if (buffer[i]) return false; if (size != limit) return ! memcmp (buffer, buffer + 16, size - 16); return true; } #endif /* NBDKIT_ISZERO_H */ libnbd-1.20.3/common/include/test-minmax.c0000644000175000017500000001444314525371754014060 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #undef NDEBUG /* Keep test strong even for nbdkit built without assertions */ #include #include #include "minmax.h" #define SIGNED_TEST(var, min, max) \ MIN_SIGNED_TEST (var, min, max) \ MAX_SIGNED_TEST (var, min, max) #define MIN_SIGNED_TEST(var, min, max) \ var = 0; \ assert (MIN (0, var) == 0); \ var = 1; \ assert (MIN (0, var) == 0); \ var = -1; \ assert (MIN (0, var) == -1); \ var = 1; \ assert (MIN (var, 0) == 0); \ var = 1; \ assert (MIN (var, 1) == 1); \ var = -1; \ assert (MIN (var, 0) == -1); \ var = min; \ assert (MIN (var, min) == min); \ var = max; \ assert (MIN (var, max) == max); \ var = min; \ assert (MIN (var, max) == min); \ assert (MIN (0, min) == min); #define MAX_SIGNED_TEST(var, min, max) \ var = 0; \ assert (MAX (0, var) == 0); \ var = 1; \ assert (MAX (0, var) == 1); \ var = -1; \ assert (MAX (0, var) == 0); \ var = 1; \ assert (MAX (var, 0) == 1); \ var = 1; \ assert (MAX (var, 1) == 1); \ var = -1; \ assert (MAX (var, 0) == 0); \ var = min; \ assert (MAX (var, min) == min); \ var = max; \ assert (MAX (var, max) == max); \ var = min; \ assert (MAX (var, max) == max); \ assert (MAX (0, min) == 0); #define UNSIGNED_TEST(var, max) \ MIN_UNSIGNED_TEST (var, max) \ MAX_UNSIGNED_TEST (var, max) #define MIN_UNSIGNED_TEST(var, max) \ var = 0; \ assert (MIN (0, var) == 0); \ var = 1; \ assert (MIN (0, var) == 0); \ var = 1; \ assert (MIN (var, 0) == 0); \ var = 1; \ assert (MIN (var, 1) == 1); \ var = max; \ assert (MIN (var, max) == max); #define MAX_UNSIGNED_TEST(var, max) \ var = 0; \ assert (MAX (0, var) == 0); \ var = 1; \ assert (MAX (0, var) == 1); \ var = 1; \ assert (MAX (var, 0) == 1); \ var = 1; \ assert (MAX (var, 1) == 1); \ var = max; \ assert (MAX (var, max) == max); int main (void) { signed char sc; int i; int8_t i8; int16_t i16; int32_t i32; int64_t i64; unsigned char uc; unsigned u; uint8_t u8; uint16_t u16; uint32_t u32; uint64_t u64; float f; double d; SIGNED_TEST (sc, SCHAR_MIN, SCHAR_MAX); SIGNED_TEST (i, INT_MIN, INT_MAX); SIGNED_TEST (i8, INT8_MIN, INT8_MAX); SIGNED_TEST (i16, INT16_MIN, INT16_MAX); SIGNED_TEST (i32, INT32_MIN, INT32_MAX); SIGNED_TEST (i64, INT64_MIN, INT64_MAX); UNSIGNED_TEST (uc, UCHAR_MAX); UNSIGNED_TEST (u, UINT_MAX); UNSIGNED_TEST (u8, UINT8_MAX); UNSIGNED_TEST (u16, UINT16_MAX); UNSIGNED_TEST (u32, UINT32_MAX); UNSIGNED_TEST (u64, UINT64_MAX); /* Note that FLT_MIN and DBL_MIN are the closest positive normalized * numbers to 0.0, not the min. */ SIGNED_TEST (f, -FLT_MAX, FLT_MAX); SIGNED_TEST (d, -DBL_MAX, DBL_MAX); /* Test that MIN and MAX can be nested. This is really a compile * test, but we do check the answer. */ assert (MIN (MIN (1, 2), 3) == 1); assert (MAX (MIN (1, 2), 3) == 3); assert (MIN (MAX (1, 2), 3) == 2); assert (MAX (MAX (1, 4), 3) == 4); assert (MIN (3, MIN (1, 2)) == 1); assert (MAX (3, MIN (1, 2)) == 3); assert (MIN (3, MAX (1, 2)) == 2); assert (MAX (3, MAX (1, 4)) == 4); assert (MIN (MIN (1, MIN (2, 3)), 4) == 1); assert (MAX (MAX (1, MAX (2, 3)), 4) == 4); exit (EXIT_SUCCESS); } libnbd-1.20.3/common/include/minmax.h0000644000175000017500000000570714525371754013113 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_MINMAX_H #define NBDKIT_MINMAX_H #include /* Safe MIN and MAX macros. These evaluate each parameter once. They * work for any comparable type. * * __auto_type is a GCC extension, added in GCC 4.9 in 2014, and to * Clang in 2015. The fallback uses typeof which was added a very * long time ago. Note that OpenBSD lacks __auto_type so the fallback * is required. */ #include "unique-name.h" #undef MIN #define MIN(x, y) \ MIN_1 ((x), (y), NBDKIT_UNIQUE_NAME (_x), NBDKIT_UNIQUE_NAME (_y)) #undef MAX #define MAX(x, y) \ MAX_1 ((x), (y), NBDKIT_UNIQUE_NAME (_x), NBDKIT_UNIQUE_NAME (_y)) #ifdef HAVE_AUTO_TYPE #define MIN_1(x, y, _x, _y) ({ \ __auto_type _x = (x); \ __auto_type _y = (y); \ _x < _y ? _x : _y; \ }) #define MAX_1(x, y, _x, _y) ({ \ __auto_type _x = (x); \ __auto_type _y = (y); \ _x > _y ? _x : _y; \ }) #else #define MIN_1(x, y, _x, _y) ({ \ typeof (x) _x = (x); \ typeof (y) _y = (y); \ _x < _y ? _x : _y; \ }) #define MAX_1(x, y, _x, _y) ({ \ typeof (x) _x = (x); \ typeof (y) _y = (y); \ _x > _y ? _x : _y; \ }) #endif #endif /* NBDKIT_MINMAX_H */ libnbd-1.20.3/common/include/ansi-colours.h0000644000175000017500000000624214525371754014233 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_ANSI_COLOURS_H #define NBDKIT_ANSI_COLOURS_H #include /* For the ansi_* functions, the main program should declare this * variable, and initialize it in main() / option parsing. See * libnbd.git/dump/dump.c for an example of how to initialize it. */ extern bool colour; /* Restore the terminal colours to the default. * * As well as doing this before normal exit, you should also set a * signal handler which calls this and fflush(fp). See * libnbd.git/dump/dump.c for an example. */ static inline void ansi_restore (FILE *fp) { if (colour) fputs ("\033[0m", fp); } /* Set the terminal colour. */ static inline void ansi_colour (const char *c, FILE *fp) { if (colour) fprintf (fp, "\033[%sm", c); } #define ANSI_FG_BOLD_BLACK "1;30" #define ANSI_FG_BLUE "22;34" #define ANSI_FG_BRIGHT_BLUE "1;34" #define ANSI_FG_BRIGHT_CYAN "1;36" #define ANSI_FG_BRIGHT_GREEN "1;32" #define ANSI_FG_BRIGHT_MAGENTA "1;35" #define ANSI_FG_BRIGHT_RED "1;31" #define ANSI_FG_BRIGHT_WHITE "1;37" #define ANSI_FG_BRIGHT_YELLOW "1;33" #define ANSI_FG_CYAN "22;36" #define ANSI_FG_GREEN "22;32" #define ANSI_FG_GREY "22;90" #define ANSI_FG_MAGENTA "22;35" #define ANSI_FG_RED "22;31" #define ANSI_FG_YELLOW "22;33" #define ANSI_BG_BLACK "40" #define ANSI_BG_LIGHT_GREY "47" #define ANSI_BG_GREY "100" /* Unconditional versions of above (don't depend on global ‘colour’). */ static inline void ansi_force_restore (FILE *fp) { fputs ("\033[0m", fp); } static inline void ansi_force_colour (const char *c, FILE *fp) { fprintf (fp, "\033[%sm", c); } #endif /* NBDKIT_ANSI_COLOURS_H */ libnbd-1.20.3/common/include/compiler-macros.h0000644000175000017500000000734314525371754014714 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_COMPILER_MACROS_H #define NBDKIT_COMPILER_MACROS_H #ifndef __cplusplus /* BUILD_BUG_UNLESS_TRUE(1) => 0 * BUILD_BUG_UNLESS_TRUE(0) => compile-time failure * * It works by constructing a struct which has an impossible * (negative-sized) bitfield in the false case. Anonymous bitfields * are permitted in C99 and above. * * The Linux kernel calls this BUILD_BUG_ON_ZERO(!cond) which is a * confusing name. It has the same semantics except cond is negated. */ #define BUILD_BUG_STRUCT_SIZE(cond) \ (sizeof (struct { int: (cond) ? 1 : -1; })) #define BUILD_BUG_UNLESS_TRUE(cond) \ (BUILD_BUG_STRUCT_SIZE (cond) - BUILD_BUG_STRUCT_SIZE (cond)) /* Each of TYPE_IS_POINTER() and TYPE_IS_ARRAY() produces a build failure if it * is invoked with an object that has neither pointer-to-object type nor array * type. * * C99 6.5.2.1 constrains one of the operands of the subscript operator to have * pointer-to-object type, and the other operand to have integer type. In the * replacement text of TYPE_IS_POINTER(), we use [0] as subscript (providing the * integer operand), therefore the macro argument (p) is constrained to have * pointer-to-object type. * * If TYPE_IS_POINTER() is invoked with a pointer that has pointer-to-object * type, the constraint is directly satisfied, and TYPE_IS_POINTER() evaluates, * at compile time, to 1. * * If TYPE_IS_POINTER() is invoked with an array, the constraint of the * subscript operator is satisfied again -- because the array argument "decays" * to a pointer to the array's initial element (C99 6.3.2p3) --, and * TYPE_IS_POINTER() evaluates, at compile time, to 0. * * If TYPE_IS_POINTER() is invoked with an argument having any other type, then * the subscript operator constraint is not satisfied, and C99 5.1.1.3p1 * requires the emission of a diagnostic message -- the build breaks. Therefore, * TYPE_IS_ARRAY() can be defined simply as the logical negation of * TYPE_IS_POINTER(). */ #define TYPE_IS_POINTER(p) \ (__builtin_types_compatible_p (typeof (p), typeof (&(p)[0]))) #define TYPE_IS_ARRAY(a) (!TYPE_IS_POINTER (a)) #else /* __cplusplus */ #define BUILD_BUG_UNLESS_TRUE(cond) 0 #define TYPE_IS_POINTER(p) 1 #define TYPE_IS_ARRAY(a) 1 #endif /* __cplusplus */ #endif /* NBDKIT_COMPILER_MACROS_H */ libnbd-1.20.3/common/include/rounding.h0000644000175000017500000000424414525371754013442 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_ROUNDING_H #define NBDKIT_ROUNDING_H #include #include "ispowerof2.h" /* Round up i to next multiple of n (n must be a power of 2). */ #define ROUND_UP(i, n) ({ \ assert (is_power_of_2 (n)); \ ((i) + (n) - 1) & -((typeof (i))(n)); \ }) /* Round down i to next multiple of n (n must be a power of 2). */ #define ROUND_DOWN(i, n) ({ \ assert (is_power_of_2 (n)); \ (i) & -((typeof (i))(n)); \ }) /* Return n / d, rounding the result up to the next integer. */ #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) #endif /* NBDKIT_ROUNDING_H */ libnbd-1.20.3/common/include/static-assert.h0000644000175000017500000000411314525371754014376 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_STATIC_ASSERT_H #define NBDKIT_STATIC_ASSERT_H #include "unique-name.h" /* Assert "expression" at compile time. If "expression" evaluates to zero (at * compile time), produce a compiler error message that includes * "expectation_id". */ #define STATIC_ASSERT(expression, expectation_id) \ do { \ typedef char NBDKIT_UNIQUE_NAME (expectation_id)[(expression) ? 1 : -1] \ __attribute__ ((__unused__)); \ } while (0) #endif /* NBDKIT_STATIC_ASSERT_H */ libnbd-1.20.3/common/include/unique-name.h0000644000175000017500000000351114525371754014035 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef NBDKIT_UNIQUE_NAME_H #define NBDKIT_UNIQUE_NAME_H /* https://stackoverflow.com/a/1597129 * https://stackoverflow.com/a/12711226 */ #define XXUNIQUE_NAME(name, counter) name ## counter #define XUNIQUE_NAME(name, counter) XXUNIQUE_NAME (name, counter) #define NBDKIT_UNIQUE_NAME(name) XUNIQUE_NAME (name, __COUNTER__) #endif /* NBDKIT_UNIQUE_NAME_H */ libnbd-1.20.3/common/utils/0000755000175000017500000000000014675532654011241 5libnbd-1.20.3/common/utils/Makefile.am0000644000175000017500000000421314616437241013204 # nbdkit # Copyright Red Hat # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # # * Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # * Neither the name of Red Hat nor the names of its contributors may be # used to endorse or promote products derived from this software without # specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. include $(top_srcdir)/common-rules.mk noinst_LTLIBRARIES = libutils.la libutils_la_SOURCES = \ const-string-vector.h \ device-size.c \ device-size.h \ nbdkit-string.h \ string-vector.h \ vector.c \ vector.h \ version.c \ version.h \ $(NULL) libutils_la_CPPFLAGS = \ -I$(top_srcdir)/include \ -I$(top_srcdir)/common/include \ $(NULL) libutils_la_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) libutils_la_LIBADD = \ $(NULL) # Unit tests. 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IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Extensible list of const strings. The implementation uses vector.h. */ #ifndef CONST_STRING_VECTOR_H #define CONST_STRING_VECTOR_H #include "vector.h" DEFINE_VECTOR_TYPE (const_string_vector, const char *); #endif /* CONST_STRING_VECTOR_H */ libnbd-1.20.3/common/utils/device-size.c0000644000175000017500000001364014616437241013527 /* nbdkit * Copyright Red Hat * * This is based on code from util-linux/lib/blkdev.c which is * distributed under a compatible license. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_SYS_IOCTL_H #include #endif #ifdef HAVE_SYS_DISK_H #include /* for Darwin and FreeBSD */ #endif #ifdef HAVE_SYS_DISKLABEL_H #include /* for FreeBSD */ #endif #ifdef HAVE_LINUX_FS_H #include /* for BLKGETSIZE{64,} on Linux */ #endif #include "device-size.h" static int64_t find_size_by_seeking (int fd); static long valid_offset (int fd, int64_t offset); /* Calculate the size of file or block device 'fd'. * * If 'statbuf' is non-NULL, it should contain the result of a * previous call to fstat(2). Otherwise, this function may need to * call fstat. It may need to seek on the file descriptor or use * ioctl. * * NB: In general this function requires O_RDONLY/O_RDWR access to * block devices, because otherwise the find_size_by_seeking method * doesn't work. * * On error, sets errno and returns -1. */ int64_t device_size (int fd, const struct stat *statbuf_from_caller) { const struct stat *sb; struct stat statbuf; #if defined(DKIOCGETBLOCKCOUNT) || defined(BLKGETSIZE64) uint64_t u64; #endif if (statbuf_from_caller != NULL) sb = statbuf_from_caller; else { if (fstat (fd, &statbuf) == -1) return -1; sb = &statbuf; } /* Assume st_size works for regular files. */ if (S_ISREG (sb->st_mode)) return sb->st_size; /* Error for anything else which is not a block device. */ else if (!S_ISBLK (sb->st_mode)) { errno = ENOTBLK; return -1; } /* Apple Darwin */ #ifdef DKIOCGETBLOCKCOUNT if (ioctl (fd, DKIOCGETBLOCKCOUNT, &u64) >= 0) { u64 <<= 9; return u64; } #endif /* Linux */ #ifdef BLKGETSIZE64 if (ioctl (fd, BLKGETSIZE64, &u64) >= 0) return u64; #endif #ifdef BLKGETSIZE unsigned long ul; if (ioctl (fd, BLKGETSIZE, &ul) >= 0) return (uint64_t)ul << 9; #endif /* FreeBSD */ #ifdef DIOCGMEDIASIZE off_t off; if (ioctl (fd, DIOCGMEDIASIZE, &off) >= 0) return off; #endif /* Fall back to seeking. */ return find_size_by_seeking (fd); } /* The two functions below were copied from util-linux and it's not * obvious what it does or how it works, so ... * * The aim of this function is to be a fallback to find the size of a * block device by seeking to the end. We used to use lseek(SEEK_END) * for this, but that isn't portable to some BSDs. * * It starts by setting [low, high] to [0, 1024] and checking if the * high offset (1024) is valid, where "valid" means is seekable and * you can read a byte from that offset. If valid, it tries again * with [1024, 2048], [2048, 4096], doubling each time. * * When the high offset is no longer valid, we enter the second loop * with a [low, high] range where we know the end of the disk must be * >= low and < high. The second loop does a binary search to find * the end of the disk. */ static int64_t find_size_by_seeking (int fd) { int64_t high, low = 0; /* Find range. */ for (high = 1024; valid_offset (fd, high); ) { if (high == INT64_MAX) { errno = EFBIG; return -1; } low = high; if (high >= INT64_MAX/2) high = INT64_MAX; else high *= 2; } /* Binary search in >= low, < high. */ while (low < high - 1) { int64_t mid = (low + high) / 2; if (valid_offset (fd, mid)) low = mid; else high = mid; } /* This is in the original code, but what is it for? I initially * thought it was meant to reset the seek offset to 0, but it * actually sets it to 1. Is that a mistake? Or does it do * something else? XXX */ valid_offset (fd, 0); /* Return the size, which is last offset + 1. */ return low + 1; } static long valid_offset (int fd, int64_t offset) { char ch; ssize_t r; if (lseek (fd, offset, SEEK_SET) < 0) return 0; /* The original code in util-linux just checks for < 1, but that's * wrong. If the file descriptor is not open for reading * (ie. O_WRONLY) then this fails with EBADF, resulting in * calculating an apparent size of 1. Assert fail if we see EBADF * here as it's a programming error. */ r = read (fd, &ch, 1); assert (r != -1 || errno != EBADF); if (r < 1) return 0; return 1; } libnbd-1.20.3/common/utils/device-size.h0000644000175000017500000000175314616437241013536 /* nbd client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_DEVICE_SIZE_H #define LIBNBD_DEVICE_SIZE_H #include #include extern int64_t device_size (int fd, const struct stat *statbuf); #endif /* LIBNBD_DEVICE_SIZE_H */ libnbd-1.20.3/common/utils/nbdkit-string.h0000644000175000017500000000324314525371754014107 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Extensible string. The implementation uses vector.h. */ #ifndef NBDKIT_STRING_H #define NBDKIT_STRING_H #include "vector.h" DEFINE_VECTOR_TYPE (string, char); #endif /* NBDKIT_STRING_H */ libnbd-1.20.3/common/utils/string-vector.h0000644000175000017500000000327514525371754014143 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Extensible list of strings. The implementation uses vector.h. */ #ifndef STRING_VECTOR_H #define STRING_VECTOR_H #include "vector.h" DEFINE_POINTER_VECTOR_TYPE (string_vector, char *); #endif /* STRING_VECTOR_H */ libnbd-1.20.3/common/utils/vector.c0000644000175000017500000001170014571634150012613 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include #include "checked-overflow.h" #include "vector.h" static int calculate_capacity (struct generic_vector *v, size_t n, size_t itemsize, size_t *newcap_r, size_t *newbytes_r, bool exactly) { size_t reqcap, reqbytes, newcap, newbytes, t; /* New capacity requested. We must allocate this minimum (or fail). * reqcap = v->cap + n * reqbytes = reqcap * itemsize */ if (ADD_OVERFLOW (v->cap, n, &reqcap) || MUL_OVERFLOW (reqcap, itemsize, &reqbytes)) { errno = ENOMEM; return -1; } /* However for the sake of optimization, scale buffer by 3/2 so that * repeated reservations don't call realloc often. * newcap = v->cap + (v->cap + 1) / 2 * newbytes = newcap * itemsize */ if (exactly || ADD_OVERFLOW (v->cap, 1u, &t) || ADD_OVERFLOW (v->cap, t/2, &newcap) || MUL_OVERFLOW (newcap, itemsize, &newbytes) || newbytes < reqbytes) { /* If that either overflows or is less than the minimum requested, * fall back to the requested capacity. */ newcap = reqcap; newbytes = reqbytes; } *newcap_r = newcap; *newbytes_r = newbytes; return 0; } int generic_vector_reserve (struct generic_vector *v, size_t n, size_t itemsize, bool exactly) { void *newptr; size_t newcap, newbytes; if (calculate_capacity (v, n, itemsize, &newcap, &newbytes, exactly) == -1) return -1; newptr = realloc (v->ptr, newbytes); if (newptr == NULL) return -1; v->ptr = newptr; v->cap = newcap; return 0; } /* Always allocates a buffer which is page aligned (both base and size). */ int generic_vector_reserve_page_aligned (struct generic_vector *v, size_t n, size_t itemsize) { #ifdef HAVE_POSIX_MEMALIGN int r; #endif void *newptr; size_t newcap, newbytes; long pagesize; size_t extra, extra_items; pagesize = sysconf (_SC_PAGESIZE); assert (pagesize > 1); assert (pagesize % itemsize == 0); if (calculate_capacity (v, n, itemsize, &newcap, &newbytes, true) == -1) return -1; /* If the new size (in bytes) is not a full page then we have to * round up to the next page. */ extra = newbytes & (pagesize - 1); if (extra > 0) { extra_items = (pagesize - extra) / itemsize; if (ADD_OVERFLOW (newcap, extra_items, &newcap) || ADD_OVERFLOW (newbytes, extra_items * itemsize, &newbytes)) { errno = ENOMEM; return -1; } } #ifdef HAVE_POSIX_MEMALIGN if ((r = posix_memalign (&newptr, pagesize, newbytes)) != 0) { errno = r; return -1; } #elif HAVE_VALLOC newptr = valloc (newbytes); if (newptr == NULL) return -1; #else #error "this platform does not have posix_memalign or valloc" #endif /* How much to copy here? * * vector_reserve always makes the buffer larger so we don't have to * deal with the case of a shrinking buffer. * * Like the underlying realloc we do not have to zero the newly * reserved elements. * * However (like realloc) we have to copy the existing elements even * those that are not allocated and only reserved (between 'len' and * 'cap'). * * The spec of vector is not clear on the last two points, but * existing code depends on this undocumented behaviour. */ memcpy (newptr, v->ptr, v->cap * itemsize); free (v->ptr); v->ptr = newptr; v->cap = newcap; return 0; } libnbd-1.20.3/common/utils/vector.h0000644000175000017500000003546414571633326012641 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Simple implementation of a vector. It can be cheaply appended, and * more expensively inserted. There are two main use-cases we * consider: lists of strings (either with a defined length, or * NULL-terminated), and lists of numbers. It is generic so could be * used for lists of anything (eg. structs) where being able to append * easily is important. */ #ifndef NBDKIT_VECTOR_H #define NBDKIT_VECTOR_H #include #include #include #include "compiler-macros.h" #include "static-assert.h" #ifdef __clang__ #pragma clang diagnostic ignored "-Wunused-function" #pragma clang diagnostic ignored "-Wduplicate-decl-specifier" #endif /* Use of this macro defines a new type called ‘name’ containing an * extensible vector of ‘type’ elements. For example: * * DEFINE_VECTOR_TYPE (string_vector, char *); * * defines a new type called ‘string_vector’ as a vector of ‘char *’. * You can create variables of this type: * * string_vector names = empty_vector; * * or * * string_vector names; * names = (string_vector)empty_vector; * * where ‘names.ptr[]’ will be an array of strings and ‘names.len’ * will be the number of strings. There are no get/set accessors. To * iterate over the strings you can use the ‘.ptr’ field directly: * * for (size_t i = 0; i < names.len; ++i) * printf ("%s\n", names.ptr[i]); * * Initializing with ‘empty_vector’, or assigning the compound literal * ‘(string_vector)empty_vector’, sets ‘.ptr = NULL’ and ‘.len = 0’. * * DEFINE_VECTOR_TYPE also defines utility functions. For the full * list see the definition below, but useful functions include: * * ‘name’_append (eg. ‘string_vector_append’) * - Append a new element at the end. This operation is cheap. * * ‘name’_insert (eg. ‘string_vector_insert’) * - Insert a new element at the beginning, middle or end. This * operation is more expensive because existing elements may need * to be copied around. * * Both functions extend the vector if required, and so both may fail * (returning -1) which you must check for. */ #define DEFINE_VECTOR_TYPE(name, type) \ struct name { \ type *ptr; /* Pointer to array of items. */ \ size_t len; /* Number of valid items in the array. */ \ size_t cap; /* Maximum number of items. */ \ }; \ typedef struct name name; \ \ /* Reserve n elements at the end of the vector. Note space is \ * allocated and capacity is increased, but the vector length is \ * not increased and the new elements are not initialized. \ */ \ static inline int __attribute__ ((__unused__)) \ name##_reserve (name *v, size_t n) \ { \ return generic_vector_reserve ((struct generic_vector *)v, n, \ sizeof (type), false); \ } \ \ /* Same as _reserve, but reserve exactly this number of elements \ * without any overhead. Useful if you know ahead of time that you \ * will never need to extend the vector. \ */ \ static inline int __attribute__ ((__unused__)) \ name##_reserve_exactly (name *v, size_t n) \ { \ return generic_vector_reserve ((struct generic_vector *)v, \ n, sizeof (type), true); \ } \ \ /* Same as _reserve, but the allocation will be page aligned. Note \ * that the machine page size must be divisible by sizeof (type). \ */ \ static inline int __attribute__ ((__unused__)) \ name##_reserve_page_aligned (name *v, size_t n) \ { \ return generic_vector_reserve_page_aligned ((struct generic_vector *)v, \ n, sizeof (type)); \ } \ \ /* Insert at i'th element. i=0 => beginning i=len => append */ \ static inline int __attribute__ ((__unused__)) \ name##_insert (name *v, type elem, size_t i) \ { \ assert (i <= v->len); \ if (v->len >= v->cap) { \ if (name##_reserve (v, 1) == -1) return -1; \ } \ memmove (&v->ptr[i+1], &v->ptr[i], (v->len-i) * sizeof (elem)); \ v->ptr[i] = elem; \ v->len++; \ return 0; \ } \ \ /* Append a new element to the end of the vector. */ \ static inline int __attribute__ ((__unused__)) \ name##_append (name *v, type elem) \ { \ return name##_insert (v, elem, v->len); \ } \ \ /* Remove i'th element. i=0 => beginning i=len-1 => end */ \ static inline void __attribute__ ((__unused__)) \ name##_remove (name *v, size_t i) \ { \ assert (i < v->len); \ memmove (&v->ptr[i], &v->ptr[i+1], (v->len-i-1) * sizeof (type)); \ v->len--; \ } \ \ /* Remove all elements and deallocate the vector. */ \ static inline void __attribute__ ((__unused__)) \ name##_reset (name *v) \ { \ free (v->ptr); \ v->ptr = NULL; \ v->len = v->cap = 0; \ } \ \ /* Iterate over the vector, calling f() on each element. */ \ static inline void __attribute__ ((__unused__)) \ name##_iter (name *v, void (*f) (type elem)) \ { \ size_t i; \ for (i = 0; i < v->len; ++i) \ f (v->ptr[i]); \ } \ \ /* Sort the elements of the vector. */ \ static inline void __attribute__ ((__unused__)) \ name##_sort (name *v, \ int (*compare) (const type *p1, const type *p2)) \ { \ qsort (v->ptr, v->len, sizeof (type), (void *)compare); \ } \ \ /* Search for an exactly matching element in the vector using a \ * binary search. Returns a pointer to the element or NULL. \ */ \ static inline type * __attribute__ ((__unused__)) \ name##_search (const name *v, const void *key, \ int (*compare) (const void *key, const type *v)) \ { \ return bsearch (key, v->ptr, v->len, sizeof (type), \ (void *)compare); \ } \ \ /* Make a new vector with the same elements. */ \ static inline int __attribute__ ((__unused__)) \ name##_duplicate (name *v, name *copy) \ { \ /* Note it's allowed for v and copy to be the same pointer. */ \ type *vptr = v->ptr; \ type *newptr; \ size_t len = v->len * sizeof (type); \ \ newptr = malloc (len); \ if (newptr == NULL) return -1; \ memcpy (newptr, vptr, len); \ copy->ptr = newptr; \ copy->len = copy->cap = v->len; \ return 0; \ } \ \ /* End with duplicate declaration, so callers must supply ';'. */ \ struct name #define empty_vector { .ptr = NULL, .len = 0, .cap = 0 } /* This macro should only be used if: * - the vector contains pointers, and * - the pointed-to objects are: * - neither const- nor volatile-qualified, and * - allocated with malloc() or equivalent. */ #define ADD_VECTOR_EMPTY_METHOD(name) \ /* Call free() on each element of the vector, then reset the vector. \ */ \ static inline void __attribute__ ((__unused__)) \ name##_empty (name *v) \ { \ size_t i; \ for (i = 0; i < v->len; ++i) { \ STATIC_ASSERT (TYPE_IS_POINTER (v->ptr[i]), \ _vector_contains_pointers); \ free (v->ptr[i]); \ } \ name##_reset (v); \ } \ \ /* Force callers to supply ';'. */ \ struct name /* Convenience macro tying together DEFINE_VECTOR_TYPE() and * ADD_VECTOR_EMPTY_METHOD(). Inherit and forward the requirement for a * trailing semicolon from ADD_VECTOR_EMPTY_METHOD() to the caller. */ #define DEFINE_POINTER_VECTOR_TYPE(name, type) \ DEFINE_VECTOR_TYPE (name, type); \ ADD_VECTOR_EMPTY_METHOD (name) struct generic_vector { void *ptr; size_t len; size_t cap; }; extern int generic_vector_reserve (struct generic_vector *v, size_t n, size_t itemsize, bool exactly); extern int generic_vector_reserve_page_aligned (struct generic_vector *v, size_t n, size_t itemsize); #endif /* NBDKIT_VECTOR_H */ libnbd-1.20.3/common/utils/version.c0000644000175000017500000000315514525371754013012 /* nbd client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include "libnbd.h" #include "version.h" void display_version (const char *program_name) { struct nbd_handle *nbd; const char *package_name = NULL; const char *version = NULL; /* The program name and the version of the binary. */ printf ("%s %s\n", program_name, PACKAGE_VERSION); /* Flush to make sure it is printed, even if the code below crashes * for any reason. */ fflush (stdout); /* Now try to get the name and version of libnbd from the shared * library, but try not to fail. */ nbd = nbd_create (); if (nbd) { package_name = nbd_get_package_name (nbd); version = nbd_get_version (nbd); } if (version) { printf ("%s %s\n", package_name ? package_name : PACKAGE_NAME, version); fflush (stdout); } nbd_close (nbd); } libnbd-1.20.3/common/utils/version.h0000644000175000017500000000234114525371754013013 /* nbd client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_VERSION_H #define LIBNBD_VERSION_H /* This function is used in the command line utilities to display the * version of the tool and the library. It can be that the library * version is different (because of dynamic linking) but that would * usually indicate a packaging error. program_name should be the * program name, eg. "nbdcopy". */ extern void display_version (const char *program_name); #endif /* LIBNBD_INTERNAL_H */ libnbd-1.20.3/common/utils/test-vector.c0000644000175000017500000001531714571634150013600 /* nbdkit * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include #undef NDEBUG /* Keep test strong even for nbdkit built without assertions */ #include #include "bench.h" #include "const-string-vector.h" #include "nbdkit-string.h" #include "string-vector.h" #include "vector.h" #define APPENDS 1000000 DEFINE_VECTOR_TYPE (int64_vector, int64_t); DEFINE_VECTOR_TYPE (uint32_vector, uint32_t); static int compare (const int64_t *a, const int64_t *b) { return (*a > *b) - (*a < *b); } static void test_int64_vector (void) { int64_vector v = empty_vector; size_t i; int64_t tmp, *p; for (i = 0; i < 10; ++i) { int r = int64_vector_insert (&v, i, 0); assert (r == 0); } for (i = 0; i < 10; ++i) assert (v.ptr[i] == 9 - i); int64_vector_sort (&v, compare); for (i = 0; i < 10; ++i) assert (v.ptr[i] == i); int64_vector_remove (&v, 1); assert (v.len == 9); assert (v.ptr[1] == 2); tmp = 10; p = int64_vector_search (&v, &tmp, (void *)compare); assert (p == NULL); tmp = 8; p = int64_vector_search (&v, &tmp, (void *)compare); assert (p == &v.ptr[7]); free (v.ptr); } static void test_string_concat (string *s, const char *append) { const size_t len = strlen (append); size_t i; int r; r = string_reserve (s, len); assert (r == 0); /* The contract is that after calling string_reserve with 'n', we * can append up to 'n' items to the vector without failing. */ for (i = 0; i < len; ++i) { r = string_append (s, append[i]); assert (r == 0); } } static void test_string (void) { string s = empty_vector; int r; char nul = 0; test_string_concat (&s, "hello"); test_string_concat (&s, " world"); r = string_append (&s, nul); assert (r == 0); assert (strcmp (s.ptr, "hello world") == 0); assert (s.len == 12); /* hello + space + world + \0 */ free (s.ptr); } /* Same as above, but using string_reserve_exactly. */ static void test_string_concat_exactly (string *s, const char *append) { const size_t len = strlen (append); size_t i; int r; r = string_reserve_exactly (s, len); assert (r == 0); /* The contract is that after calling string_reserve with 'n', we * can append up to 'n' items to the vector without failing. */ for (i = 0; i < len; ++i) { r = string_append (s, append[i]); assert (r == 0); } } static void test_string_exactly (void) { string s = empty_vector; int r; char nul = 0; test_string_concat_exactly (&s, "hello"); test_string_concat_exactly (&s, " world"); r = string_append (&s, nul); assert (r == 0); assert (strcmp (s.ptr, "hello world") == 0); assert (s.len == 12); /* hello + space + world + \0 */ free (s.ptr); } static void test_string_vector (void) { string_vector v = empty_vector; size_t i; int r; for (i = 0; i < 10; ++i) { char *s; r = asprintf (&s, "number %zu", i); assert (r >= 0); r = string_vector_append (&v, s); assert (r == 0); } /* NULL-terminate the strings. */ r = string_vector_append (&v, NULL); assert (r == 0); /* Now print them. */ for (i = 0; v.ptr[i] != NULL; ++i) printf ("%s\n", v.ptr[i]); assert (i == 10); string_vector_empty (&v); } static void test_const_string_vector (void) { const_string_vector v = empty_vector; size_t i; int r; r = const_string_vector_append (&v, "abc"); assert (r >= 0); r = const_string_vector_append (&v, "def"); assert (r >= 0); r = const_string_vector_append (&v, "ghi"); assert (r >= 0); r = const_string_vector_append (&v, "jkl"); assert (r >= 0); /* NULL-terminate the strings. */ r = const_string_vector_append (&v, NULL); assert (r == 0); /* Now print them. */ for (i = 0; v.ptr[i] != NULL; ++i) printf ("%s\n", v.ptr[i]); assert (i == 4); const_string_vector_reset (&v); } /* Test size_t overflow. */ static void test_overflow (void) { string s = empty_vector; int r; /* It should be impossible to reserve SIZE_MAX - epsilon. */ r = string_reserve (&s, SIZE_MAX - 10000); assert (r == -1); assert (errno == ENOMEM); } static void bench_reserve (void) { uint32_vector v = empty_vector; struct bench b; uint32_t i; bench_start (&b); uint32_vector_reserve (&v, APPENDS); for (i = 0; i < APPENDS; i++) { uint32_vector_append (&v, i); } bench_stop (&b); assert (v.ptr[APPENDS-1] == APPENDS-1); free (v.ptr); printf ("bench_reserve: %d appends in %.6f s\n", APPENDS, bench_sec (&b)); } static void bench_append (void) { uint32_vector v = empty_vector; struct bench b; uint32_t i; bench_start (&b); for (i = 0; i < APPENDS; i++) { uint32_vector_append (&v, i); } bench_stop (&b); assert (v.ptr[APPENDS - 1] == APPENDS - 1); free (v.ptr); printf ("bench_append: %d appends in %.6f s\n", APPENDS, bench_sec (&b)); } int main (int argc, char *argv[]) { const char *s; bool bench; s = getenv ("LIBNBD_BENCH"); bench = s && strcmp (s, "1") == 0; if (!bench) { /* Do normal tests. */ test_int64_vector (); test_string (); test_string_exactly (); test_string_vector (); test_const_string_vector (); test_overflow (); } else { /* Do benchmarks. */ bench_reserve (); bench_append (); } return 0; } libnbd-1.20.3/common/utils/bench.h0000644000175000017500000000421014525371754012402 /* libnbd * Copyright Red Hat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef LIBNBD_BENCH_H #define LIBNBD_BENCH_H #include #define MICROSECONDS 1000000 struct bench { struct timeval start, stop; }; static inline void bench_start (struct bench *b) { gettimeofday (&b->start, NULL); } static inline void bench_stop (struct bench *b) { gettimeofday (&b->stop, NULL); } static inline double bench_sec (struct bench *b) { struct timeval dt; dt.tv_sec = b->stop.tv_sec - b->start.tv_sec; dt.tv_usec = b->stop.tv_usec - b->start.tv_usec; if (dt.tv_usec < 0) { dt.tv_sec -= 1; dt.tv_usec += MICROSECONDS; } return ((double)dt.tv_sec * MICROSECONDS + dt.tv_usec) / MICROSECONDS; } #endif /* LIBNBD_BENCH_H */ libnbd-1.20.3/test-driver0000755000175000017500000001141714603303676010722 #! /bin/sh # test-driver - basic testsuite driver script. scriptversion=2018-03-07.03; # UTC # Copyright (C) 2011-2021 Free Software Foundation, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # This file is maintained in Automake, please report # bugs to or send patches to # . # Make unconditional expansion of undefined variables an error. 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See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA api_built += \ nbd_set_debug \ nbd_get_debug \ nbd_set_debug_callback \ nbd_clear_debug_callback \ nbd_stats_bytes_sent \ nbd_stats_chunks_sent \ nbd_stats_bytes_received \ nbd_stats_chunks_received \ nbd_set_handle_name \ nbd_get_handle_name \ nbd_set_private_data \ nbd_get_private_data \ nbd_set_export_name \ nbd_get_export_name \ nbd_set_request_block_size \ nbd_get_request_block_size \ nbd_set_full_info \ nbd_get_full_info \ nbd_get_canonical_export_name \ nbd_get_export_description \ nbd_set_tls \ nbd_get_tls \ nbd_get_tls_negotiated \ nbd_set_tls_certificates \ nbd_set_tls_verify_peer \ nbd_get_tls_verify_peer \ nbd_set_tls_username \ nbd_get_tls_username \ nbd_set_tls_psk_file \ nbd_set_request_extended_headers \ nbd_get_request_extended_headers \ nbd_get_extended_headers_negotiated \ nbd_set_request_structured_replies \ nbd_get_request_structured_replies \ nbd_get_structured_replies_negotiated \ nbd_set_request_meta_context \ nbd_get_request_meta_context \ nbd_set_handshake_flags \ nbd_get_handshake_flags \ nbd_set_pread_initialize \ nbd_get_pread_initialize \ nbd_set_strict_mode \ nbd_get_strict_mode \ nbd_set_opt_mode \ nbd_get_opt_mode \ nbd_opt_go \ nbd_opt_abort \ nbd_opt_starttls \ nbd_opt_extended_headers \ nbd_opt_structured_reply \ nbd_opt_list \ nbd_opt_info \ nbd_opt_list_meta_context \ nbd_opt_list_meta_context_queries \ nbd_opt_set_meta_context \ nbd_opt_set_meta_context_queries \ nbd_add_meta_context \ nbd_get_nr_meta_contexts \ nbd_get_meta_context \ nbd_clear_meta_contexts \ nbd_set_uri_allow_transports \ nbd_set_uri_allow_tls \ nbd_set_uri_allow_local_file \ nbd_connect_uri \ nbd_connect_unix \ nbd_connect_vsock \ nbd_connect_tcp \ nbd_connect_socket \ nbd_connect_command \ nbd_connect_systemd_socket_activation \ nbd_set_socket_activation_name \ nbd_get_socket_activation_name \ nbd_is_read_only \ nbd_can_flush \ nbd_can_fua \ nbd_is_rotational \ nbd_can_trim \ nbd_can_zero \ nbd_can_fast_zero \ nbd_can_block_status_payload \ nbd_can_df \ nbd_can_multi_conn \ nbd_can_cache \ nbd_can_meta_context \ nbd_get_protocol \ nbd_get_size \ nbd_get_block_size \ nbd_pread \ nbd_pread_structured \ nbd_pwrite \ nbd_shutdown \ nbd_flush \ nbd_trim \ nbd_cache \ nbd_zero \ nbd_block_status \ nbd_block_status_64 \ nbd_block_status_filter \ nbd_poll \ nbd_poll2 \ nbd_aio_connect \ nbd_aio_connect_uri \ nbd_aio_connect_unix \ nbd_aio_connect_vsock \ nbd_aio_connect_tcp \ nbd_aio_connect_socket \ nbd_aio_connect_command \ nbd_aio_connect_systemd_socket_activation \ nbd_aio_opt_go \ nbd_aio_opt_abort \ nbd_aio_opt_starttls \ nbd_aio_opt_extended_headers \ nbd_aio_opt_structured_reply \ nbd_aio_opt_list \ nbd_aio_opt_info \ nbd_aio_opt_list_meta_context \ nbd_aio_opt_list_meta_context_queries \ nbd_aio_opt_set_meta_context \ nbd_aio_opt_set_meta_context_queries \ nbd_aio_pread \ nbd_aio_pread_structured \ nbd_aio_pwrite \ nbd_aio_disconnect \ nbd_aio_flush \ nbd_aio_trim \ nbd_aio_cache \ nbd_aio_zero \ nbd_aio_block_status \ nbd_aio_block_status_64 \ nbd_aio_block_status_filter \ nbd_aio_get_fd \ nbd_aio_get_direction \ nbd_aio_notify_read \ nbd_aio_notify_write \ nbd_aio_is_created \ nbd_aio_is_connecting \ nbd_aio_is_negotiating \ nbd_aio_is_ready \ nbd_aio_is_processing \ nbd_aio_is_dead \ nbd_aio_is_closed \ nbd_aio_command_completed \ nbd_aio_peek_command_completed \ nbd_aio_in_flight \ nbd_connection_state \ nbd_get_package_name \ nbd_get_version \ nbd_kill_subprocess \ nbd_supports_tls \ nbd_supports_vsock \ nbd_supports_uri \ nbd_get_uri \ $(NULL) libnbd-1.20.3/docs/api-links.pod0000444000175000017500000001036214603303744012037 L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L. libnbd-1.20.3/docs/api-flag-links.pod0000444000175000017500000000043314603303744012744 L, L, L, L, L, L, L, L, L, L, L, L. libnbd-1.20.3/docs/nbd_set_debug.pod0000444000175000017500000000240714603303744012735 =head1 NAME nbd_set_debug - set or clear the debug flag =head1 SYNOPSIS #include int nbd_set_debug ( struct nbd_handle *h, bool debug ); =head1 DESCRIPTION Set or clear the debug flag. When debugging is enabled, debugging messages from the library are printed to stderr, unless a debugging callback has been defined too (see L) in which case they are sent to that function. This flag defaults to false on newly created handles, except if C is set in the environment in which case it defaults to true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_DEBUG 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_debug.pod0000444000175000017500000000144714603303744012724 =head1 NAME nbd_get_debug - return the state of the debug flag =head1 SYNOPSIS #include int nbd_get_debug ( struct nbd_handle *h ); =head1 DESCRIPTION Return the state of the debug flag on this handle. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_DEBUG 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_debug_callback.pod0000444000175000017500000000311114603303744014542 =head1 NAME nbd_set_debug_callback - set the debug callback =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *context, const char *msg); void *user_data; void (*free) (void *user_data); } nbd_debug_callback; int nbd_set_debug_callback ( struct nbd_handle *h, nbd_debug_callback debug_callback ); =head1 DESCRIPTION Set the debug callback. This function is called when the library emits debug messages, when debugging is enabled on a handle. The callback parameters are C passed to this function, the name of the libnbd function emitting the debug message (C), and the message itself (C). If no debug callback is set on a handle then messages are printed on C. The callback should not call C APIs on the same handle since it can be called while holding the handle lock and will cause a deadlock. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_DEBUG_CALLBACK 1 =head1 SEE ALSO L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_clear_debug_callback.pod0000444000175000017500000000203214603303744015036 =head1 NAME nbd_clear_debug_callback - clear the debug callback =head1 SYNOPSIS #include int nbd_clear_debug_callback ( struct nbd_handle *h ); =head1 DESCRIPTION Remove the debug callback if one was previously associated with the handle (with L). If no callback was associated this does nothing. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CLEAR_DEBUG_CALLBACK 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_stats_bytes_sent.pod0000444000175000017500000000212614603303744014367 =head1 NAME nbd_stats_bytes_sent - statistics of bytes sent over connection so far =head1 SYNOPSIS #include uint64_t nbd_stats_bytes_sent ( struct nbd_handle *h ); =head1 DESCRIPTION Return the number of bytes that the client has sent to the server. This tracks the plaintext bytes utilized by the NBD protocol; it may differ from the number of bytes actually sent over the connection, particularly when TLS is in use. =head1 RETURN VALUE This call returns a counter. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_STATS_BYTES_SENT 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_stats_chunks_sent.pod0000444000175000017500000000232014603303744014530 =head1 NAME nbd_stats_chunks_sent - statistics of chunks sent over connection so far =head1 SYNOPSIS #include uint64_t nbd_stats_chunks_sent ( struct nbd_handle *h ); =head1 DESCRIPTION Return the number of chunks that the client has sent to the server, where a chunk is a group of bytes delineated by a magic number that cannot be further subdivided without breaking the protocol. This number does not necessarily relate to the number of API calls made, nor to the number of TCP packets sent over the connection. =head1 RETURN VALUE This call returns a counter. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_STATS_CHUNKS_SENT 1 =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_stats_bytes_received.pod0000444000175000017500000000215414603303744015205 =head1 NAME nbd_stats_bytes_received - statistics of bytes received over connection so far =head1 SYNOPSIS #include uint64_t nbd_stats_bytes_received ( struct nbd_handle *h ); =head1 DESCRIPTION Return the number of bytes that the client has received from the server. This tracks the plaintext bytes utilized by the NBD protocol; it may differ from the number of bytes actually received over the connection, particularly when TLS is in use. =head1 RETURN VALUE This call returns a counter. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_STATS_BYTES_RECEIVED 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_stats_chunks_received.pod0000444000175000017500000000237014603303744015352 =head1 NAME nbd_stats_chunks_received - statistics of chunks received over connection so far =head1 SYNOPSIS #include uint64_t nbd_stats_chunks_received ( struct nbd_handle *h ); =head1 DESCRIPTION Return the number of chunks that the client has received from the server, where a chunk is a group of bytes delineated by a magic number that cannot be further subdivided without breaking the protocol. This number does not necessarily relate to the number of API calls made, nor to the number of TCP packets received over the connection. =head1 RETURN VALUE This call returns a counter. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_STATS_CHUNKS_RECEIVED 1 =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_handle_name.pod0000444000175000017500000000235414603303744014103 =head1 NAME nbd_set_handle_name - set the handle name =head1 SYNOPSIS #include int nbd_set_handle_name ( struct nbd_handle *h, const char *handle_name ); =head1 DESCRIPTION Handles have a name which is unique within the current process. The handle name is used in debug output. Handle names are normally generated automatically and have the form C<"nbd1">, C<"nbd2">, etc., but you can optionally use this call to give the handles a name which is meaningful for your application to make debugging output easier to understand. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_HANDLE_NAME 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_handle_name.pod0000444000175000017500000000214114603303744014061 =head1 NAME nbd_get_handle_name - get the handle name =head1 SYNOPSIS #include char * nbd_get_handle_name ( struct nbd_handle *h ); =head1 DESCRIPTION Get the name of the handle. If it was previously set by calling L then this returns the name that was set. Otherwise it will return a generic name like C<"nbd1">, C<"nbd2">, etc. =head1 RETURN VALUE This call returns a string. The caller must free the returned string to avoid a memory leak. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_HANDLE_NAME 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_private_data.pod0000444000175000017500000000226014603303744014307 =head1 NAME nbd_set_private_data - set the per-handle private data =head1 SYNOPSIS #include uintptr_t nbd_set_private_data ( struct nbd_handle *h, uintptr_t private_data ); =head1 DESCRIPTION Handles contain a private data field for applications to use for any purpose. When calling libnbd from C, the type of this field is C so it can be used to store an unsigned integer or a pointer. In non-C bindings it can be used to store an unsigned integer. This function sets the value of this field and returns the old value (or 0 if it was not previously set). =head1 RETURN VALUE This call returns a C. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.8. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_PRIVATE_DATA 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_private_data.pod0000444000175000017500000000164514603303744014301 =head1 NAME nbd_get_private_data - get the per-handle private data =head1 SYNOPSIS #include uintptr_t nbd_get_private_data ( struct nbd_handle *h ); =head1 DESCRIPTION Return the value of the private data field set previously by a call to L (or 0 if it was not previously set). =head1 RETURN VALUE This call returns a C. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.8. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_PRIVATE_DATA 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_export_name.pod0000444000175000017500000000560114603303744014167 =head1 NAME nbd_set_export_name - set the export name =head1 SYNOPSIS #include int nbd_set_export_name ( struct nbd_handle *h, const char *export_name ); =head1 DESCRIPTION For servers which require an export name or can serve different content on different exports, set the C to connect to. The default is the empty string C<"">. This is only relevant when connecting to servers using the newstyle protocol as the oldstyle protocol did not support export names. The NBD protocol limits export names to 4096 bytes, but servers may not support the full length. The encoding of export names is always UTF-8. When option mode is not in use, the export name must be set before beginning a connection. However, when L has enabled option mode, it is possible to change the export name prior to L. In particular, the use of L during negotiation can be used to determine a name the server is likely to accept, and L can be used to learn details about an export before connecting. This call may be skipped if using L to connect to a URI that includes an export name. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_set_export_name can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_EXPORT_NAME 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_export_name.pod0000444000175000017500000000236214603303744014154 =head1 NAME nbd_get_export_name - get the export name =head1 SYNOPSIS #include char * nbd_get_export_name ( struct nbd_handle *h ); =head1 DESCRIPTION Get the export name associated with the handle. This is the name that libnbd requests; see L for determining if the server has a different canonical name for the given export (most common when requesting the default export name of an empty string C<"">) =head1 RETURN VALUE This call returns a string. The caller must free the returned string to avoid a memory leak. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_EXPORT_NAME 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_request_block_size.pod0000444000175000017500000000534014603303744015542 =head1 NAME nbd_set_request_block_size - control whether NBD_OPT_GO requests block size =head1 SYNOPSIS #include int nbd_set_request_block_size ( struct nbd_handle *h, bool request ); =head1 DESCRIPTION By default, when connecting to an export, libnbd requests that the server report any block size restrictions. The NBD protocol states that a server may supply block sizes regardless of whether the client requests them, and libnbd will report those block sizes (see L); conversely, if a client does not request block sizes, the server may reject the connection instead of dealing with a client sending unaligned requests. This function makes it possible to test server behavior by emulating older clients. Note that even when block size is requested, the server is not obligated to provide any. Furthermore, if block sizes are provided (whether or not the client requested them), libnbd enforces alignment to those sizes unless L is used to bypass client-side safety checks. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_request_block_size can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.12. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_REQUEST_BLOCK_SIZE 1 =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_request_block_size.pod0000444000175000017500000000167614603303744015536 =head1 NAME nbd_get_request_block_size - see if NBD_OPT_GO requests block size =head1 SYNOPSIS #include int nbd_get_request_block_size ( struct nbd_handle *h ); =head1 DESCRIPTION Return the state of the block size request flag on this handle. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.12. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_REQUEST_BLOCK_SIZE 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_full_info.pod0000444000175000017500000000534214603303744013625 =head1 NAME nbd_set_full_info - control whether NBD_OPT_GO requests extra details =head1 SYNOPSIS #include int nbd_set_full_info ( struct nbd_handle *h, bool request ); =head1 DESCRIPTION By default, when connecting to an export, libnbd only requests the details it needs to service data operations. The NBD protocol says that a server can supply optional information, such as a canonical name of the export (see L) or a description of the export (see L), but that a hint from the client makes it more likely for this extra information to be provided. This function controls whether libnbd will provide that hint. Note that even when full info is requested, the server is not obligated to reply with all information that libnbd requested. Similarly, libnbd will ignore any optional server information that libnbd has not yet been taught to recognize. Furthermore, the hint to request block sizes is independently controlled via L. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_full_info can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_FULL_INFO 1 =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_full_info.pod0000444000175000017500000000163314603303744013610 =head1 NAME nbd_get_full_info - see if NBD_OPT_GO requests extra details =head1 SYNOPSIS #include int nbd_get_full_info ( struct nbd_handle *h ); =head1 DESCRIPTION Return the state of the full info request flag on this handle. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_FULL_INFO 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_canonical_export_name.pod0000444000175000017500000001203314615733025016161 =head1 NAME nbd_get_canonical_export_name - return the canonical export name, if the server has one =head1 SYNOPSIS #include char * nbd_get_canonical_export_name ( struct nbd_handle *h ); =head1 DESCRIPTION The NBD protocol permits a server to report an optional canonical export name, which may differ from the client's request (as set by L or L). This function accesses any name returned by the server; it may be the same as the client request, but is more likely to differ when the client requested a connection to the default export name (an empty string C<"">). Some servers are unlikely to report a canonical name unless the client specifically hinted about wanting it, via L. =head1 RETURN VALUE This call returns a string. The caller must free the returned string to avoid a memory leak. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_get_canonical_export_name can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_CANONICAL_EXPORT_NAME 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_export_description.pod0000444000175000017500000001134714615733025015564 =head1 NAME nbd_get_export_description - return the export description, if the server has one =head1 SYNOPSIS #include char * nbd_get_export_description ( struct nbd_handle *h ); =head1 DESCRIPTION The NBD protocol permits a server to report an optional export description. This function reports any description returned by the server. Some servers are unlikely to report a description unless the client specifically hinted about wanting it, via L. For L, a description is set with I<-D>. =head1 RETURN VALUE This call returns a string. The caller must free the returned string to avoid a memory leak. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_get_export_description can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_tls.pod0000444000175000017500000001516414603303744012455 =head1 NAME nbd_set_tls - enable or require TLS (authentication and encryption) =head1 SYNOPSIS #include int nbd_set_tls ( struct nbd_handle *h, int tls ); =head1 DESCRIPTION Enable or require TLS (authenticated and encrypted connections) to the NBD server. The possible settings are: =over 4 =item C Disable TLS. (The default setting, unless using L with a URI that requires TLS). This setting is also necessary if you use L and want to interact in plaintext with a server that implements the NBD protocol's C mode, prior to enabling TLS with L. Most NBD servers with TLS support prefer the NBD protocol's C mode, so this sort of manual interaction tends to be useful mainly during integration testing. =item C Enable TLS if possible. This option is insecure (or best effort) in that in some cases it will fall back to an unencrypted and/or unauthenticated connection if TLS could not be established. Use C below if the connection must be encrypted. Some servers will drop the connection if TLS fails so fallback may not be possible. =item C Require an encrypted and authenticated TLS connection. Always fail to connect if the connection is not encrypted and authenticated. =back As well as calling this you may also need to supply the path to the certificates directory (L), the username (L) and/or the Pre-Shared Keys (PSK) file (L). For now, when using L, any URI query parameters related to TLS are not handled automatically. Setting the level higher than zero will fail if libnbd was not compiled against gnutls; you can test whether this is the case with L. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_tls can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_TLS 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* An example showing how to connect to a server which is * using TLS encryption. * * This requires nbdkit, and psktool from gnutls. * * Both libnbd and nbdkit support TLS-PSK which is a * simpler-to-deploy form of encryption. (Of course * certificate-based encryption is also supported, but * it’s harder to make a self-contained example). */ #include #include #include #include #include #define TMPDIR "/tmp/XXXXXX" #define KEYS "keys.psk" #define USERNAME "alice" static char dir[] = TMPDIR; static char keys[] = TMPDIR "/" KEYS; static char cmd[] = "psktool -u " USERNAME " -p " TMPDIR "/" KEYS; /* Remove the temporary keys file when the program * exits. */ static void cleanup_keys (void) { unlink (keys); rmdir (dir); } /* Create the temporary keys file to share with the * server. */ static void create_keys (void) { size_t i; if (mkdtemp (dir) == NULL) { perror ("mkdtemp"); exit (EXIT_FAILURE); } i = strlen (cmd) - strlen (TMPDIR) - strlen (KEYS) - 1; memcpy (&cmd[i], dir, strlen (TMPDIR)); memcpy (keys, dir, strlen (TMPDIR)); if (system (cmd) != 0) { fprintf (stderr, "psktool command failed\n"); exit (EXIT_FAILURE); } atexit (cleanup_keys); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; create_keys (); /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Enable TLS in the client. */ if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Enable TLS-PSK and pass the keys filename. */ if (nbd_set_tls_psk_file (nbd, keys) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set the local username for authentication. */ if (nbd_set_tls_username (nbd, USERNAME) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run nbdkit as a subprocess, enabling and requiring * TLS-PSK encryption. */ char *args[] = { "nbdkit", "-s", "--exit-with-parent", "--tls", "require", "--tls-psk", keys, "pattern", "size=1M", NULL }; if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* TLS connections must be shut down. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_tls.pod0000444000175000017500000000166514603303744012442 =head1 NAME nbd_get_tls - get the TLS request setting =head1 SYNOPSIS #include int nbd_get_tls ( struct nbd_handle *h ); =head1 DESCRIPTION Get the TLS request setting. B If you want to find out if TLS was actually negotiated on a particular connection use L instead. =head1 RETURN VALUE This call returns one of the LIBNBD_TLS_* values. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_TLS 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_tls_negotiated.pod0000444000175000017500000000500114603303744014631 =head1 NAME nbd_get_tls_negotiated - find out if TLS was negotiated on a connection =head1 SYNOPSIS #include int nbd_get_tls_negotiated ( struct nbd_handle *h ); =head1 DESCRIPTION After connecting you may call this to find out if the connection is using TLS. This is normally useful only if you set the TLS request mode to C (see L), because in this mode we try to use TLS but fall back to unencrypted if it was not available. This function will tell you if TLS was negotiated or not. In C mode (the most secure) the connection would have failed if TLS could not be negotiated. With C mode, TLS is not tried automatically; but if the NBD server uses the less-common C mode, this function reports whether a manual L enabled TLS or if the connection is still plaintext. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_get_tls_negotiated can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_TLS_NEGOTIATED 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_tls_certificates.pod0000444000175000017500000000443414603303744015200 =head1 NAME nbd_set_tls_certificates - set the path to the TLS certificates directory =head1 SYNOPSIS #include int nbd_set_tls_certificates ( struct nbd_handle *h, const char *dir ); =head1 DESCRIPTION Set the path to the TLS certificates directory. If not set and TLS is used then a compiled in default is used. For root this is C. For non-root this is C<$HOME/.pki/libnbd> and C<$HOME/.config/pki/libnbd>. If none of these directories can be found then the system trusted CAs are used. This function may be called regardless of whether TLS is supported, but will have no effect unless L is also used to request or require TLS. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_set_tls_certificates can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_TLS_CERTIFICATES 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_tls_verify_peer.pod0000444000175000017500000000436714603303744015057 =head1 NAME nbd_set_tls_verify_peer - set whether we verify the identity of the server =head1 SYNOPSIS #include int nbd_set_tls_verify_peer ( struct nbd_handle *h, bool verify ); =head1 DESCRIPTION Set this flag to control whether libnbd will verify the identity of the server from the server's certificate and the certificate authority. This defaults to true when connecting to TCP servers using TLS certificate authentication, and false otherwise. This function may be called regardless of whether TLS is supported, but will have no effect unless L is also used to request or require TLS. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_tls_verify_peer can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_TLS_VERIFY_PEER 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_tls_verify_peer.pod0000444000175000017500000000150414603303744015031 =head1 NAME nbd_get_tls_verify_peer - get whether we verify the identity of the server =head1 SYNOPSIS #include int nbd_get_tls_verify_peer ( struct nbd_handle *h ); =head1 DESCRIPTION Get the verify peer flag. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_TLS_VERIFY_PEER 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_tls_username.pod0000444000175000017500000001206414603303744014350 =head1 NAME nbd_set_tls_username - set the TLS username =head1 SYNOPSIS #include int nbd_set_tls_username ( struct nbd_handle *h, const char *username ); =head1 DESCRIPTION Set the TLS client username. This is used if authenticating with PSK over TLS is enabled. If not set then the local username is used. This function may be called regardless of whether TLS is supported, but will have no effect unless L is also used to request or require TLS. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_set_tls_username can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_TLS_USERNAME 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* An example showing how to connect to a server which is * using TLS encryption. * * This requires nbdkit, and psktool from gnutls. * * Both libnbd and nbdkit support TLS-PSK which is a * simpler-to-deploy form of encryption. (Of course * certificate-based encryption is also supported, but * it’s harder to make a self-contained example). */ #include #include #include #include #include #define TMPDIR "/tmp/XXXXXX" #define KEYS "keys.psk" #define USERNAME "alice" static char dir[] = TMPDIR; static char keys[] = TMPDIR "/" KEYS; static char cmd[] = "psktool -u " USERNAME " -p " TMPDIR "/" KEYS; /* Remove the temporary keys file when the program * exits. */ static void cleanup_keys (void) { unlink (keys); rmdir (dir); } /* Create the temporary keys file to share with the * server. */ static void create_keys (void) { size_t i; if (mkdtemp (dir) == NULL) { perror ("mkdtemp"); exit (EXIT_FAILURE); } i = strlen (cmd) - strlen (TMPDIR) - strlen (KEYS) - 1; memcpy (&cmd[i], dir, strlen (TMPDIR)); memcpy (keys, dir, strlen (TMPDIR)); if (system (cmd) != 0) { fprintf (stderr, "psktool command failed\n"); exit (EXIT_FAILURE); } atexit (cleanup_keys); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; create_keys (); /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Enable TLS in the client. */ if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Enable TLS-PSK and pass the keys filename. */ if (nbd_set_tls_psk_file (nbd, keys) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set the local username for authentication. */ if (nbd_set_tls_username (nbd, USERNAME) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run nbdkit as a subprocess, enabling and requiring * TLS-PSK encryption. */ char *args[] = { "nbdkit", "-s", "--exit-with-parent", "--tls", "require", "--tls-psk", keys, "pattern", "size=1M", NULL }; if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* TLS connections must be shut down. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_tls_username.pod0000444000175000017500000000170014603303744014327 =head1 NAME nbd_get_tls_username - get the current TLS username =head1 SYNOPSIS #include char * nbd_get_tls_username ( struct nbd_handle *h ); =head1 DESCRIPTION Get the current TLS username. =head1 RETURN VALUE This call returns a string. The caller must free the returned string to avoid a memory leak. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_TLS_USERNAME 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_tls_psk_file.pod0000444000175000017500000001222214603303744014321 =head1 NAME nbd_set_tls_psk_file - set the TLS Pre-Shared Keys (PSK) filename =head1 SYNOPSIS #include int nbd_set_tls_psk_file ( struct nbd_handle *h, const char *filename ); =head1 DESCRIPTION Set the TLS Pre-Shared Keys (PSK) filename. This is used if trying to authenticate to the server using with a pre-shared key. There is no default so if this is not set then PSK authentication cannot be used to connect to the server. This function may be called regardless of whether TLS is supported, but will have no effect unless L is also used to request or require TLS. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_set_tls_psk_file can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_TLS_PSK_FILE 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* An example showing how to connect to a server which is * using TLS encryption. * * This requires nbdkit, and psktool from gnutls. * * Both libnbd and nbdkit support TLS-PSK which is a * simpler-to-deploy form of encryption. (Of course * certificate-based encryption is also supported, but * it’s harder to make a self-contained example). */ #include #include #include #include #include #define TMPDIR "/tmp/XXXXXX" #define KEYS "keys.psk" #define USERNAME "alice" static char dir[] = TMPDIR; static char keys[] = TMPDIR "/" KEYS; static char cmd[] = "psktool -u " USERNAME " -p " TMPDIR "/" KEYS; /* Remove the temporary keys file when the program * exits. */ static void cleanup_keys (void) { unlink (keys); rmdir (dir); } /* Create the temporary keys file to share with the * server. */ static void create_keys (void) { size_t i; if (mkdtemp (dir) == NULL) { perror ("mkdtemp"); exit (EXIT_FAILURE); } i = strlen (cmd) - strlen (TMPDIR) - strlen (KEYS) - 1; memcpy (&cmd[i], dir, strlen (TMPDIR)); memcpy (keys, dir, strlen (TMPDIR)); if (system (cmd) != 0) { fprintf (stderr, "psktool command failed\n"); exit (EXIT_FAILURE); } atexit (cleanup_keys); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; create_keys (); /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Enable TLS in the client. */ if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Enable TLS-PSK and pass the keys filename. */ if (nbd_set_tls_psk_file (nbd, keys) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set the local username for authentication. */ if (nbd_set_tls_username (nbd, USERNAME) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run nbdkit as a subprocess, enabling and requiring * TLS-PSK encryption. */ char *args[] = { "nbdkit", "-s", "--exit-with-parent", "--tls", "require", "--tls-psk", keys, "pattern", "size=1M", NULL }; if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* TLS connections must be shut down. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_request_extended_headers.pod0000444000175000017500000000513214603303744016710 =head1 NAME nbd_set_request_extended_headers - control use of extended headers =head1 SYNOPSIS #include int nbd_set_request_extended_headers ( struct nbd_handle *h, bool request ); =head1 DESCRIPTION By default, libnbd tries to negotiate extended headers with the server, as this protocol extension permits the use of 64-bit zero, trim, and block status actions. However, for integration testing, it can be useful to clear this flag rather than find a way to alter the server to fail the negotiation request. For backwards compatibility, the setting of this knob is ignored if L is also set to false, since the use of extended headers implies structured replies. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_request_extended_headers can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_REQUEST_EXTENDED_HEADERS 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_request_extended_headers.pod0000444000175000017500000000217614603303744016701 =head1 NAME nbd_get_request_extended_headers - see if extended headers are attempted =head1 SYNOPSIS #include int nbd_get_request_extended_headers ( struct nbd_handle *h ); =head1 DESCRIPTION Return the state of the request extended headers flag on this handle. B If you want to find out if extended headers were actually negotiated on a particular connection use L instead. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_REQUEST_EXTENDED_HEADERS 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_extended_headers_negotiated.pod0000444000175000017500000000601114603303744017324 =head1 NAME nbd_get_extended_headers_negotiated - see if extended headers are in use =head1 SYNOPSIS #include int nbd_get_extended_headers_negotiated ( struct nbd_handle *h ); =head1 DESCRIPTION After connecting you may call this to find out if the connection is using extended headers. Note that this setting is sticky; this can return true even after a second L returns false because the server detected a duplicate request. When extended headers are not in use, commands are limited to a 32-bit length, even when the libnbd API uses a 64-bit parameter to express the length. But even when extended headers are supported, the server may enforce other limits, visible through L. Note that when extended headers are negotiated, you should prefer the use of L instead of L if any of the meta contexts you requested via L might return 64-bit status values; however, all of the well-known meta contexts covered by current C constants only return 32-bit status. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_get_extended_headers_negotiated can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_EXTENDED_HEADERS_NEGOTIATED 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_request_structured_replies.pod0000444000175000017500000000527714603303744017356 =head1 NAME nbd_set_request_structured_replies - control use of structured replies =head1 SYNOPSIS #include int nbd_set_request_structured_replies ( struct nbd_handle *h, bool request ); =head1 DESCRIPTION By default, libnbd tries to negotiate structured replies with the server, as this protocol extension must be in use before L or L can return true. However, for integration testing, it can be useful to clear this flag rather than find a way to alter the server to fail the negotiation request. It is also useful to set this to false prior to using L if it is desired to control when to send L during negotiation. Note that setting this knob to false also disables any automatic request for extended headers. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_request_structured_replies can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_REQUEST_STRUCTURED_REPLIES 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_request_structured_replies.pod0000444000175000017500000000221714603303744017331 =head1 NAME nbd_get_request_structured_replies - see if structured replies are attempted =head1 SYNOPSIS #include int nbd_get_request_structured_replies ( struct nbd_handle *h ); =head1 DESCRIPTION Return the state of the request structured replies flag on this handle. B If you want to find out if structured replies were actually negotiated on a particular connection use L instead. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_REQUEST_STRUCTURED_REPLIES 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_structured_replies_negotiated.pod0000444000175000017500000000473514603303744017773 =head1 NAME nbd_get_structured_replies_negotiated - see if structured replies are in use =head1 SYNOPSIS #include int nbd_get_structured_replies_negotiated ( struct nbd_handle *h ); =head1 DESCRIPTION After connecting you may call this to find out if the connection is using structured replies. Note that this setting is sticky; this can return true even after a second L returns false because the server detected a duplicate request. Note that if the connection negotiates extended headers, this function returns true (as extended headers imply structured replies) even if no explicit request for structured replies was attempted. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_get_structured_replies_negotiated can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_STRUCTURED_REPLIES_NEGOTIATED 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_request_meta_context.pod0000444000175000017500000000652014603303744016111 =head1 NAME nbd_set_request_meta_context - control whether connect automatically requests meta contexts =head1 SYNOPSIS #include int nbd_set_request_meta_context ( struct nbd_handle *h, bool request ); =head1 DESCRIPTION This function controls whether the act of connecting to an export (all C calls when L is false, or L and L when option mode is enabled) will also try to issue NBD_OPT_SET_META_CONTEXT when the server supports structured replies or extended headers and any contexts were registered by L. The default setting is true; however the extra step of negotiating meta contexts is not always desirable: performing both info and go on the same export works without needing to re-negotiate contexts on the second call; integration testing of other servers may benefit from manual invocation of L at other times in the negotiation sequence; and even when using just L, it can be faster to collect the server's results by relying on the callback function passed to L than a series of post-process calls to L. Note that this control has no effect if the server does not negotiate structured replies or extended headers, or if the client did not request any contexts via L. Setting this control to false may cause L to fail. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_request_meta_context can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_REQUEST_META_CONTEXT 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_request_meta_context.pod0000444000175000017500000000174014603303744016074 =head1 NAME nbd_get_request_meta_context - see if connect automatically requests meta contexts =head1 SYNOPSIS #include int nbd_get_request_meta_context ( struct nbd_handle *h ); =head1 DESCRIPTION Return the state of the automatic meta context request flag on this handle. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_REQUEST_META_CONTEXT 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_handshake_flags.pod0000444000175000017500000000654714603303744014762 =head1 NAME nbd_set_handshake_flags - control use of handshake flags =head1 SYNOPSIS #include int nbd_set_handshake_flags ( struct nbd_handle *h, uint32_t flags ); =head1 DESCRIPTION By default, libnbd tries to negotiate all possible handshake flags that are also supported by the server, since omitting a handshake flag can prevent the use of other functionality such as TLS encryption or structured replies. However, for integration testing, it can be useful to reduce the set of flags supported by the client to test that a particular server can handle various clients that were compliant to older versions of the NBD specification. The C argument is a bitmask, including zero or more of the following handshake flags: =over 4 =item C = 1 The server gracefully handles unknown option requests from the client, rather than disconnecting. Without this flag, a client cannot safely request to use extensions such as TLS encryption or structured replies, as the request may cause an older server to drop the connection. =item C = 2 If the client is forced to use C instead of the preferred C, this flag allows the server to send fewer all-zero padding bytes over the connection. =back For convenience, the constant C is available to describe all flags supported by this build of libnbd. Future NBD extensions may add further flags, which in turn may be enabled by default in newer libnbd. As such, when attempting to disable only one specific bit, it is wiser to first call L and modify that value, rather than blindly setting a constant value. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_handshake_flags can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_HANDSHAKE_FLAGS 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_handshake_flags.pod0000444000175000017500000000273614603303744014742 =head1 NAME nbd_get_handshake_flags - see which handshake flags are supported =head1 SYNOPSIS #include uint32_t nbd_get_handshake_flags ( struct nbd_handle *h ); =head1 DESCRIPTION Return the state of the handshake flags on this handle. When the handle has not yet completed a connection (see L), this returns the flags that the client is willing to use, provided the server also advertises those flags. After the connection is ready (see L), this returns the flags that were actually agreed on between the server and client. If the NBD protocol defines new handshake flags, then the return value from a newer library version may include bits that were undefined at the time of compilation. =head1 RETURN VALUE This call returns a bitmask of LIBNBD_HANDSHAKE_FLAG_* values. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_HANDSHAKE_FLAGS 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_pread_initialize.pod0000444000175000017500000000377414603303744015173 =head1 NAME nbd_set_pread_initialize - control whether libnbd pre-initializes read buffers =head1 SYNOPSIS #include int nbd_set_pread_initialize ( struct nbd_handle *h, bool request ); =head1 DESCRIPTION By default, libnbd will pre-initialize the contents of a buffer passed to calls such as L to all zeroes prior to checking for any other errors, so that even if a client application passed in an uninitialized buffer but fails to check for errors, it will not result in a potential security risk caused by an accidental leak of prior heap contents (see CVE-2022-0485 in L for an example of a security hole in an application built against an earlier version of libnbd that lacked consistent pre-initialization). However, for a client application that has audited that an uninitialized buffer is never dereferenced, or which performs its own pre-initialization, libnbd's sanitization efforts merely pessimize performance (although the time spent in pre-initialization may pale in comparison to time spent waiting on network packets). Calling this function with C set to false tells libnbd to skip the buffer initialization step in read commands. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.12. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_PREAD_INITIALIZE 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_pread_initialize.pod0000444000175000017500000000211214603303744015140 =head1 NAME nbd_get_pread_initialize - see whether libnbd pre-initializes read buffers =head1 SYNOPSIS #include int nbd_get_pread_initialize ( struct nbd_handle *h ); =head1 DESCRIPTION Return whether libnbd performs a pre-initialization of a buffer passed to L and similar to all zeroes, as set by L. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.12. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_PREAD_INITIALIZE 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_strict_mode.pod0000444000175000017500000001235014603303744014161 =head1 NAME nbd_set_strict_mode - control how strictly to follow NBD protocol =head1 SYNOPSIS #include int nbd_set_strict_mode ( struct nbd_handle *h, uint32_t flags ); =head1 DESCRIPTION By default, libnbd tries to detect requests that would trigger undefined behavior in the NBD protocol, and rejects them client side without causing any network traffic, rather than risking undefined server behavior. However, for integration testing, it can be handy to relax the strictness of libnbd, to coerce it into sending such requests over the network for testing the robustness of the server in dealing with such traffic. The C argument is a bitmask, including zero or more of the following strictness flags: =over 4 =item C = 0x1 If set, this flag rejects client requests that do not comply with the set of advertised server flags (for example, attempting a write on a read-only server, or attempting to use C when L returned false). If clear, this flag relies on the server to reject unexpected commands. =item C = 0x2 If set, this flag rejects client requests that attempt to set a command flag not recognized by libnbd (those outside of C), or a flag not normally associated with a command (such as using C on a read command). If clear, all flags are sent on to the server, even if sending such a flag may cause the server to change its reply in a manner that confuses libnbd, perhaps causing deadlock or ending the connection. Flags that are known by libnbd as associated with a given command (such as C for L gated by L) are controlled by C instead; and C is managed automatically by libnbd unless C is disabled. Note that the NBD protocol only supports 16 bits of command flags, even though the libnbd API uses C; bits outside of the range permitted by the protocol are always a client-side error. =item C = 0x4 If set, this flag rejects client requests that would exceed the export bounds without sending any traffic to the server. If clear, this flag relies on the server to detect out-of-bounds requests. =item C = 0x8 If set, this flag rejects client requests with length 0. If clear, this permits zero-length requests to the server, which may produce undefined results. =item C = 0x10 If set, and the server provided minimum block sizes (see C for L), this flag rejects client requests that do not have length and offset aligned to the server's minimum requirements. If clear, unaligned requests are sent to the server, where it is up to the server whether to honor or reject the request. =item C = 0x20 If set, the client refuses to send a command to the server with more than libnbd's outgoing payload maximum (see C for L), whether or not the server advertised a block size maximum. If clear, oversize requests up to 64MiB may be attempted, although requests larger than 32MiB are liable to cause some servers to disconnect. =item C = 0x40 If set, commands that accept the C flag (such as L and C) ignore the presence or absence of that flag from the caller, instead sending the value over the wire that matches the server's expectations based on whether extended headers were negotiated when the connection was made. If clear, the caller takes on the responsibility for whether the payload length flag is set or clear during the affected command, which can be useful during integration testing but is more likely to lead to undefined behavior. =back For convenience, the constant C is available to describe all strictness flags supported by this build of libnbd. Future versions of libnbd may add further flags, which are likely to be enabled by default for additional client-side filtering. As such, when attempting to relax only one specific bit while keeping remaining checks at the client side, it is wiser to first call L and modify that value, rather than blindly setting a constant value. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.6. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_STRICT_MODE 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_strict_mode.pod0000444000175000017500000000203214603303744014141 =head1 NAME nbd_get_strict_mode - see which strictness flags are in effect =head1 SYNOPSIS #include uint32_t nbd_get_strict_mode ( struct nbd_handle *h ); =head1 DESCRIPTION Return flags indicating which protocol strictness items are being enforced locally by libnbd rather than the server. The return value from a newer library version may include bits that were undefined at the time of compilation. =head1 RETURN VALUE This call returns a bitmask of LIBNBD_STRICT_* values. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.6. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_STRICT_MODE 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_opt_mode.pod0000444000175000017500000001701414615733025013457 =head1 NAME nbd_set_opt_mode - control option mode, for pausing during option negotiation =head1 SYNOPSIS #include int nbd_set_opt_mode ( struct nbd_handle *h, bool enable ); =head1 DESCRIPTION Set this flag to true in order to request that a connection command C will pause for negotiation options rather than proceeding all the way to the ready state, when communicating with a newstyle server. This setting has no effect when connecting to an oldstyle server. Note that libnbd defaults to attempting C, C, and C before letting you control remaining negotiation steps; if you need control over these steps as well, first set L to C, and L or L to false, before starting the connection attempt. When option mode is enabled, you have fine-grained control over which options are negotiated, compared to the default of the server negotiating everything on your behalf using settings made before starting the connection. To leave the mode and proceed on to the ready state, you must use L successfully; a failed L returns to the negotiating state to allow a change of export name before trying again. You may also use L or L to end the connection without finishing negotiation. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_opt_mode can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_OPT_MODE 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to list NBD exports. * * To test this with qemu-nbd: * $ qemu-nbd -x "hello" -t -k /tmp/sock disk.img * $ ./run examples/list-exports /tmp/sock * [0] hello * Which export to connect to (-1 to quit)? 0 * Connecting to hello ... * /tmp/sock: hello: size = 2048 bytes * * To test this with nbdkit (requires 1.22): * $ nbdkit -U /tmp/sock sh - <<\EOF * case $1 in * list_exports) echo NAMES; echo foo; echo foobar ;; * open) echo "$3" ;; * get_size) echo "$2" | wc -c ;; * pread) echo "$2" | dd bs=1 skip=$4 count=$3 ;; * *) exit 2 ;; * esac * EOF * $ ./run examples/list-exports /tmp/sock * [0] foo * [1] foobar * Which export to connect to (-1 to quit)? 1 * Connecting to foobar ... * /tmp/sock: foobar: size = 7 bytes */ #include #include #include #include #include #include #include #include struct export_list { int i; char **names; }; /* Callback function for nbd_opt_list */ static int list_one (void *opaque, const char *name, const char *description) { struct export_list *l = opaque; char **names; printf ("[%d] %s\n", l->i, name); if (*description) printf (" (%s)\n", description); names = realloc (l->names, (l->i + 1) * sizeof *names); if (!names) { perror ("realloc"); exit (EXIT_FAILURE); } names[l->i] = strdup (name); if (!names[l->i]) { perror ("strdup"); exit (EXIT_FAILURE); } l->names = names; l->i++; return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int i; const char *name; int64_t size; struct export_list list = { 0 }; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set opt mode. */ nbd_set_opt_mode (nbd, true); /* Connect to the NBD server over a * Unix domain socket. If we did not * end up in option mode, then a * listing is not possible. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_negotiating (nbd)) { fprintf (stderr, "Server does not support " "listing exports.\n"); exit (EXIT_FAILURE); } /* Print the export list. */ if (nbd_opt_list (nbd, (nbd_list_callback) { .callback = list_one, .user_data = &list, }) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Display the list of exports. */ printf ("Which export to connect to? "); if (scanf ("%d", &i) != 1) exit (EXIT_FAILURE); if (i == -1) { if (nbd_opt_abort (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } if (i < 0 || i >= list.i) { fprintf (stderr, "index %d out of range", i); exit (EXIT_FAILURE); } name = list.names[i]; printf ("Connecting to %s ...\n", name); /* Resume connecting to the chosen export. */ if (nbd_set_export_name (nbd, name) == -1 || nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_ready (nbd)) { fprintf (stderr, "server closed early\n"); exit (EXIT_FAILURE); } /* Read the size in bytes and print it. */ size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("%s: %s: size = %" PRIi64 " bytes\n", argv[1], name, size); /* Close the libnbd handle. */ nbd_close (nbd); for (i = 0; i < list.i; i++) free (list.names[i]); free (list.names); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_opt_mode.pod0000444000175000017500000000150714603303744013441 =head1 NAME nbd_get_opt_mode - return whether option mode was enabled =head1 SYNOPSIS #include int nbd_get_opt_mode ( struct nbd_handle *h ); =head1 DESCRIPTION Return true if option negotiation mode was enabled on this handle. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_OPT_MODE 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_go.pod0000444000175000017500000001545614615733025012275 =head1 NAME nbd_opt_go - end negotiation and move on to using an export =head1 SYNOPSIS #include int nbd_opt_go ( struct nbd_handle *h ); =head1 DESCRIPTION Request that the server finish negotiation and move on to serving the export previously specified by the most recent L or L. This can only be used if L enabled option mode. By default, libnbd will automatically request all meta contexts registered by L as part of this call; but this can be suppressed with L, particularly if L was used earlier in the negotiation sequence. If this fails, the server may still be in negotiation, where it is possible to attempt another option such as a different export name; although older servers will instead have killed the connection. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_opt_go can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_GO 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to list NBD exports. * * To test this with qemu-nbd: * $ qemu-nbd -x "hello" -t -k /tmp/sock disk.img * $ ./run examples/list-exports /tmp/sock * [0] hello * Which export to connect to (-1 to quit)? 0 * Connecting to hello ... * /tmp/sock: hello: size = 2048 bytes * * To test this with nbdkit (requires 1.22): * $ nbdkit -U /tmp/sock sh - <<\EOF * case $1 in * list_exports) echo NAMES; echo foo; echo foobar ;; * open) echo "$3" ;; * get_size) echo "$2" | wc -c ;; * pread) echo "$2" | dd bs=1 skip=$4 count=$3 ;; * *) exit 2 ;; * esac * EOF * $ ./run examples/list-exports /tmp/sock * [0] foo * [1] foobar * Which export to connect to (-1 to quit)? 1 * Connecting to foobar ... * /tmp/sock: foobar: size = 7 bytes */ #include #include #include #include #include #include #include #include struct export_list { int i; char **names; }; /* Callback function for nbd_opt_list */ static int list_one (void *opaque, const char *name, const char *description) { struct export_list *l = opaque; char **names; printf ("[%d] %s\n", l->i, name); if (*description) printf (" (%s)\n", description); names = realloc (l->names, (l->i + 1) * sizeof *names); if (!names) { perror ("realloc"); exit (EXIT_FAILURE); } names[l->i] = strdup (name); if (!names[l->i]) { perror ("strdup"); exit (EXIT_FAILURE); } l->names = names; l->i++; return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int i; const char *name; int64_t size; struct export_list list = { 0 }; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set opt mode. */ nbd_set_opt_mode (nbd, true); /* Connect to the NBD server over a * Unix domain socket. If we did not * end up in option mode, then a * listing is not possible. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_negotiating (nbd)) { fprintf (stderr, "Server does not support " "listing exports.\n"); exit (EXIT_FAILURE); } /* Print the export list. */ if (nbd_opt_list (nbd, (nbd_list_callback) { .callback = list_one, .user_data = &list, }) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Display the list of exports. */ printf ("Which export to connect to? "); if (scanf ("%d", &i) != 1) exit (EXIT_FAILURE); if (i == -1) { if (nbd_opt_abort (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } if (i < 0 || i >= list.i) { fprintf (stderr, "index %d out of range", i); exit (EXIT_FAILURE); } name = list.names[i]; printf ("Connecting to %s ...\n", name); /* Resume connecting to the chosen export. */ if (nbd_set_export_name (nbd, name) == -1 || nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_ready (nbd)) { fprintf (stderr, "server closed early\n"); exit (EXIT_FAILURE); } /* Read the size in bytes and print it. */ size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("%s: %s: size = %" PRIi64 " bytes\n", argv[1], name, size); /* Close the libnbd handle. */ nbd_close (nbd); for (i = 0; i < list.i; i++) free (list.names[i]); free (list.names); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_abort.pod0000444000175000017500000001413314615733025012766 =head1 NAME nbd_opt_abort - end negotiation and close the connection =head1 SYNOPSIS #include int nbd_opt_abort ( struct nbd_handle *h ); =head1 DESCRIPTION Request that the server finish negotiation, gracefully if possible, then close the connection. This can only be used if L enabled option mode. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_opt_abort can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_ABORT 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to list NBD exports. * * To test this with qemu-nbd: * $ qemu-nbd -x "hello" -t -k /tmp/sock disk.img * $ ./run examples/list-exports /tmp/sock * [0] hello * Which export to connect to (-1 to quit)? 0 * Connecting to hello ... * /tmp/sock: hello: size = 2048 bytes * * To test this with nbdkit (requires 1.22): * $ nbdkit -U /tmp/sock sh - <<\EOF * case $1 in * list_exports) echo NAMES; echo foo; echo foobar ;; * open) echo "$3" ;; * get_size) echo "$2" | wc -c ;; * pread) echo "$2" | dd bs=1 skip=$4 count=$3 ;; * *) exit 2 ;; * esac * EOF * $ ./run examples/list-exports /tmp/sock * [0] foo * [1] foobar * Which export to connect to (-1 to quit)? 1 * Connecting to foobar ... * /tmp/sock: foobar: size = 7 bytes */ #include #include #include #include #include #include #include #include struct export_list { int i; char **names; }; /* Callback function for nbd_opt_list */ static int list_one (void *opaque, const char *name, const char *description) { struct export_list *l = opaque; char **names; printf ("[%d] %s\n", l->i, name); if (*description) printf (" (%s)\n", description); names = realloc (l->names, (l->i + 1) * sizeof *names); if (!names) { perror ("realloc"); exit (EXIT_FAILURE); } names[l->i] = strdup (name); if (!names[l->i]) { perror ("strdup"); exit (EXIT_FAILURE); } l->names = names; l->i++; return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int i; const char *name; int64_t size; struct export_list list = { 0 }; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set opt mode. */ nbd_set_opt_mode (nbd, true); /* Connect to the NBD server over a * Unix domain socket. If we did not * end up in option mode, then a * listing is not possible. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_negotiating (nbd)) { fprintf (stderr, "Server does not support " "listing exports.\n"); exit (EXIT_FAILURE); } /* Print the export list. */ if (nbd_opt_list (nbd, (nbd_list_callback) { .callback = list_one, .user_data = &list, }) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Display the list of exports. */ printf ("Which export to connect to? "); if (scanf ("%d", &i) != 1) exit (EXIT_FAILURE); if (i == -1) { if (nbd_opt_abort (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } if (i < 0 || i >= list.i) { fprintf (stderr, "index %d out of range", i); exit (EXIT_FAILURE); } name = list.names[i]; printf ("Connecting to %s ...\n", name); /* Resume connecting to the chosen export. */ if (nbd_set_export_name (nbd, name) == -1 || nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_ready (nbd)) { fprintf (stderr, "server closed early\n"); exit (EXIT_FAILURE); } /* Read the size in bytes and print it. */ size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("%s: %s: size = %" PRIi64 " bytes\n", argv[1], name, size); /* Close the libnbd handle. */ nbd_close (nbd); for (i = 0; i < list.i; i++) free (list.names[i]); free (list.names); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_starttls.pod0000444000175000017500000000652514603303744013543 =head1 NAME nbd_opt_starttls - request the server to initiate TLS =head1 SYNOPSIS #include int nbd_opt_starttls ( struct nbd_handle *h ); =head1 DESCRIPTION Request that the server initiate a secure TLS connection, by sending C. This can only be used if L enabled option mode; furthermore, if you use L to request anything other than the default of C, then libnbd will have already attempted a TLS connection prior to allowing you control over option negotiation. This command is disabled if L reports false. This function is mainly useful for integration testing of corner cases in server handling; in particular, misuse of this function when coupled with a server that is not careful about resetting stateful commands such as L could result in a security hole (see CVE-2021-3716 against nbdkit, for example). Thus, when security is a concern, you should instead prefer to use L with C and let libnbd negotiate TLS automatically. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection, which can include when the server rejects credentials supplied during the TLS handshake). Note that the NBD protocol documents that requesting TLS after it is already enabled is a client error; most servers will gracefully fail a second request, but that does not downgrade a TLS session that has already been established, as reported by L. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_opt_starttls can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_STARTTLS 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_extended_headers.pod0000444000175000017500000000561714603303744015157 =head1 NAME nbd_opt_extended_headers - request the server to enable extended headers =head1 SYNOPSIS #include int nbd_opt_extended_headers ( struct nbd_handle *h ); =head1 DESCRIPTION Request that the server use extended headers, by sending C. This can only be used if L enabled option mode; furthermore, libnbd defaults to automatically requesting this unless you use L or L prior to connecting. This function is mainly useful for integration testing of corner cases in server handling. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection). Note that some servers fail a second request as redundant; libnbd assumes that once one request has succeeded, then extended headers are supported (as visible by L) regardless if later calls to this function return false. If this function returns true, the use of structured replies is implied. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_opt_extended_headers can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_EXTENDED_HEADERS 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_structured_reply.pod0000444000175000017500000000557214603303744015303 =head1 NAME nbd_opt_structured_reply - request the server to enable structured replies =head1 SYNOPSIS #include int nbd_opt_structured_reply ( struct nbd_handle *h ); =head1 DESCRIPTION Request that the server use structured replies, by sending C. This can only be used if L enabled option mode; furthermore, libnbd defaults to automatically requesting this unless you use L prior to connecting. This function is mainly useful for integration testing of corner cases in server handling. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection). Note that some servers fail a second request as redundant; libnbd assumes that once one request has succeeded, then structured replies are supported (as visible by L) regardless if later calls to this function return false. Similarly, a server may fail this request if extended headers are already negotiated, since extended headers take priority. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_opt_structured_reply can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_STRUCTURED_REPLY 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_list.pod0000444000175000017500000001746014615733025012640 =head1 NAME nbd_opt_list - request the server to list all exports during negotiation =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name, const char *description); void *user_data; void (*free) (void *user_data); } nbd_list_callback; int nbd_opt_list ( struct nbd_handle *h, nbd_list_callback list_callback ); =head1 DESCRIPTION Request that the server list all exports that it supports. This can only be used if L enabled option mode. The C function is called once per advertised export, with any C passed to this function, and with C and C supplied by the server. Many servers omit descriptions, in which case C will be an empty string. Remember that it is not safe to call L from within the context of the callback function; rather, your code must copy any C needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of exports that were advertised by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list to avoid being an information leak, may encounter a failure after delivering partial results, or may refuse to answer more than one query per connection in the interest of avoiding negotiation that does not resolve. Thus, this function may succeed even when no exports are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of exports that might be advertised, so client code should be aware that a server may send a lengthy list. For L you will need to allow clients to make list requests by adding C to the C<[generic]> section of F. For L, a description is set with I<-D>. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_opt_list can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_LIST 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to list NBD exports. * * To test this with qemu-nbd: * $ qemu-nbd -x "hello" -t -k /tmp/sock disk.img * $ ./run examples/list-exports /tmp/sock * [0] hello * Which export to connect to (-1 to quit)? 0 * Connecting to hello ... * /tmp/sock: hello: size = 2048 bytes * * To test this with nbdkit (requires 1.22): * $ nbdkit -U /tmp/sock sh - <<\EOF * case $1 in * list_exports) echo NAMES; echo foo; echo foobar ;; * open) echo "$3" ;; * get_size) echo "$2" | wc -c ;; * pread) echo "$2" | dd bs=1 skip=$4 count=$3 ;; * *) exit 2 ;; * esac * EOF * $ ./run examples/list-exports /tmp/sock * [0] foo * [1] foobar * Which export to connect to (-1 to quit)? 1 * Connecting to foobar ... * /tmp/sock: foobar: size = 7 bytes */ #include #include #include #include #include #include #include #include struct export_list { int i; char **names; }; /* Callback function for nbd_opt_list */ static int list_one (void *opaque, const char *name, const char *description) { struct export_list *l = opaque; char **names; printf ("[%d] %s\n", l->i, name); if (*description) printf (" (%s)\n", description); names = realloc (l->names, (l->i + 1) * sizeof *names); if (!names) { perror ("realloc"); exit (EXIT_FAILURE); } names[l->i] = strdup (name); if (!names[l->i]) { perror ("strdup"); exit (EXIT_FAILURE); } l->names = names; l->i++; return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int i; const char *name; int64_t size; struct export_list list = { 0 }; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set opt mode. */ nbd_set_opt_mode (nbd, true); /* Connect to the NBD server over a * Unix domain socket. If we did not * end up in option mode, then a * listing is not possible. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_negotiating (nbd)) { fprintf (stderr, "Server does not support " "listing exports.\n"); exit (EXIT_FAILURE); } /* Print the export list. */ if (nbd_opt_list (nbd, (nbd_list_callback) { .callback = list_one, .user_data = &list, }) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Display the list of exports. */ printf ("Which export to connect to? "); if (scanf ("%d", &i) != 1) exit (EXIT_FAILURE); if (i == -1) { if (nbd_opt_abort (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } if (i < 0 || i >= list.i) { fprintf (stderr, "index %d out of range", i); exit (EXIT_FAILURE); } name = list.names[i]; printf ("Connecting to %s ...\n", name); /* Resume connecting to the chosen export. */ if (nbd_set_export_name (nbd, name) == -1 || nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_ready (nbd)) { fprintf (stderr, "server closed early\n"); exit (EXIT_FAILURE); } /* Read the size in bytes and print it. */ size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("%s: %s: size = %" PRIi64 " bytes\n", argv[1], name, size); /* Close the libnbd handle. */ nbd_close (nbd); for (i = 0; i < list.i; i++) free (list.names[i]); free (list.names); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_info.pod0000444000175000017500000000601314603303744012606 =head1 NAME nbd_opt_info - request the server for information about an export =head1 SYNOPSIS #include int nbd_opt_info ( struct nbd_handle *h ); =head1 DESCRIPTION Request that the server supply information about the export name previously specified by the most recent L or L. This can only be used if L enabled option mode. If successful, functions like L and L will report details about that export. If L is set (the default) and structured replies or extended headers were negotiated, it is also valid to use L after this call. However, it may be more efficient to clear that setting and manually utilize L with its callback approach, for learning which contexts an export supports. In general, if L is called next, that call will likely succeed with the details remaining the same, although this is not guaranteed by all servers. Not all servers understand this request, and even when it is understood, the server might fail the request even when a corresponding L would succeed. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_opt_info can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_INFO 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_list_meta_context.pod0000444000175000017500000001111314603303744015375 =head1 NAME nbd_opt_list_meta_context - list available meta contexts, using implicit query list =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name); void *user_data; void (*free) (void *user_data); } nbd_context_callback; int nbd_opt_list_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback ); =head1 DESCRIPTION Request that the server list available meta contexts associated with the export previously specified by the most recent L or L, and with a list of queries from prior calls to L (see L if you want to supply an explicit query list instead). This can only be used if L enabled option mode. The NBD protocol allows a client to decide how many queries to ask the server. Rather than taking that list of queries as a parameter to this function, libnbd reuses the current list of requested meta contexts as set by L; you can use L to set up a different list of queries. When the list is empty, a server will typically reply with all contexts that it supports; when the list is non-empty, the server will reply only with supported contexts that match the client's request. Note that a reply by the server might be encoded to represent several feasible contexts within one string, rather than multiple strings per actual context name that would actually succeed during L; so it is still necessary to use L after connecting to see which contexts are actually supported. The C function is called once per server reply, with any C passed to this function, and with C supplied by the server. Remember that it is not safe to call L from within the context of the callback function; rather, your code must copy any C needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of replies that might be advertised, so client code should be aware that a server may send a lengthy list. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_opt_list_meta_context can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.6. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_LIST_META_CONTEXT 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_list_meta_context_queries.pod0000444000175000017500000001057714603303744017147 =head1 NAME nbd_opt_list_meta_context_queries - list available meta contexts, using explicit query list =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name); void *user_data; void (*free) (void *user_data); } nbd_context_callback; int nbd_opt_list_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback ); =head1 DESCRIPTION Request that the server list available meta contexts associated with the export previously specified by the most recent L or L, and with an explicit list of queries provided as a parameter (see L if you want to reuse an implicit query list instead). This can only be used if L enabled option mode. The NBD protocol allows a client to decide how many queries to ask the server. For this function, the list is explicit in the C parameter. When the list is empty, a server will typically reply with all contexts that it supports; when the list is non-empty, the server will reply only with supported contexts that match the client's request. Note that a reply by the server might be encoded to represent several feasible contexts within one string, rather than multiple strings per actual context name that would actually succeed during L; so it is still necessary to use L after connecting to see which contexts are actually supported. The C function is called once per server reply, with any C passed to this function, and with C supplied by the server. Remember that it is not safe to call L from within the context of the callback function; rather, your code must copy any C needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of replies that might be advertised, so client code should be aware that a server may send a lengthy list. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_opt_list_meta_context_queries can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_LIST_META_CONTEXT_QUERIES 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_set_meta_context.pod0000444000175000017500000001154414603303744015225 =head1 NAME nbd_opt_set_meta_context - select specific meta contexts, using implicit query list =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name); void *user_data; void (*free) (void *user_data); } nbd_context_callback; int nbd_opt_set_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback ); =head1 DESCRIPTION Request that the server supply all recognized meta contexts registered through prior calls to L, in conjunction with the export previously specified by the most recent L or L. This can only be used if L enabled option mode. Normally, this function is redundant, as L automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with L to bypass the automatic context request normally performed by L. The NBD protocol allows a client to decide how many queries to ask the server. Rather than taking that list of queries as a parameter to this function, libnbd reuses the current list of requested meta contexts as set by L; you can use L to set up a different list of queries (see L to pass an explicit list of contexts instead). Since this function is primarily designed for testing servers, libnbd does not prevent the use of this function on an empty list or when L has disabled structured replies, in order to see how a server behaves. The C function is called once per server reply, with any C passed to this function, and with C supplied by the server. Additionally, each server name will remain visible through L until the next attempt at L or L, as well as L or L that trigger an automatic meta context request. Remember that it is not safe to call any C APIs from within the context of the callback function. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_opt_set_meta_context can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_SET_META_CONTEXT 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_opt_set_meta_context_queries.pod0000444000175000017500000001112114603303744016751 =head1 NAME nbd_opt_set_meta_context_queries - select specific meta contexts, using explicit query list =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name); void *user_data; void (*free) (void *user_data); } nbd_context_callback; int nbd_opt_set_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback ); =head1 DESCRIPTION Request that the server supply all recognized meta contexts passed in through C, in conjunction with the export previously specified by the most recent L or L. This can only be used if L enabled option mode. Normally, this function is redundant, as L automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with L to bypass the automatic context request normally performed by L. The NBD protocol allows a client to decide how many queries to ask the server. This function takes an explicit list of queries; to instead reuse an implicit list, see L. Since this function is primarily designed for testing servers, libnbd does not prevent the use of this function on an empty list or when L has disabled structured replies, in order to see how a server behaves. The C function is called once per server reply, with any C passed to this function, and with C supplied by the server. Additionally, each server name will remain visible through L until the next attempt at L or L, as well as L or L that trigger an automatic meta context request. Remember that it is not safe to call any C APIs from within the context of the callback function. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_opt_set_meta_context_queries can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_OPT_SET_META_CONTEXT_QUERIES 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_add_meta_context.pod0000444000175000017500000000642214603303744014277 =head1 NAME nbd_add_meta_context - ask server to negotiate metadata context =head1 SYNOPSIS #include int nbd_add_meta_context ( struct nbd_handle *h, const char *name ); =head1 DESCRIPTION During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as C<"base:allocation">) which describe information returned by the L command (for C<"base:allocation"> this is whether blocks of data are allocated, zero or sparse). This call adds one metadata context to the list to be negotiated. You can call it as many times as needed. The list is initially empty when the handle is created; you can check the contents of the list with L and L, or clear it with L. The NBD protocol limits meta context names to 4096 bytes, but servers may not support the full length. The encoding of meta context names is always UTF-8. Not all servers support all metadata contexts. To learn if a context was actually negotiated, call L after connecting. The single parameter is the name of the metadata context, for example C. Blibnbd.hE> includes defined constants beginning with C for some well-known contexts, but you are free to pass in other contexts. Other metadata contexts are server-specific, but include C<"qemu:dirty-bitmap:..."> and C<"qemu:allocation-depth"> for qemu-nbd (see qemu-nbd I<-B> and I<-A> options). =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_add_meta_context can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_ADD_META_CONTEXT 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_nr_meta_contexts.pod0000444000175000017500000000310514603303744015203 =head1 NAME nbd_get_nr_meta_contexts - return the current number of requested meta contexts =head1 SYNOPSIS #include ssize_t nbd_get_nr_meta_contexts ( struct nbd_handle *h ); =head1 DESCRIPTION During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as C<"base:allocation">) which describe information returned by the L command (for C<"base:allocation"> this is whether blocks of data are allocated, zero or sparse). This command returns how many meta contexts have been added to the list to request from the server via L. The server is not obligated to honor all of the requests; to see what it actually supports, see L. =head1 RETURN VALUE This call returns an integer size E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.6. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_NR_META_CONTEXTS 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_meta_context.pod0000444000175000017500000000276214603303744014331 =head1 NAME nbd_get_meta_context - return the i'th meta context request =head1 SYNOPSIS #include char * nbd_get_meta_context ( struct nbd_handle *h, size_t i ); =head1 DESCRIPTION During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as C<"base:allocation">) which describe information returned by the L command (for C<"base:allocation"> this is whether blocks of data are allocated, zero or sparse). This command returns the i'th meta context request, as added by L, and bounded by L. =head1 RETURN VALUE This call returns a string. The caller must free the returned string to avoid a memory leak. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.6. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_META_CONTEXT 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_clear_meta_contexts.pod0000444000175000017500000000507114603303744015017 =head1 NAME nbd_clear_meta_contexts - reset the list of requested meta contexts =head1 SYNOPSIS #include int nbd_clear_meta_contexts ( struct nbd_handle *h ); =head1 DESCRIPTION During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as C<"base:allocation">) which describe information returned by the L command (for C<"base:allocation"> this is whether blocks of data are allocated, zero or sparse). This command resets the list of meta contexts to request back to an empty list, for re-population by further use of L. It is primarily useful when option negotiation mode is selected (see L), for altering the list of attempted contexts between subsequent export queries. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_clear_meta_contexts can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.6. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CLEAR_META_CONTEXTS 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_uri_allow_transports.pod0000444000175000017500000000455114603303744016145 =head1 NAME nbd_set_uri_allow_transports - set the allowed transports in NBD URIs =head1 SYNOPSIS #include int nbd_set_uri_allow_transports ( struct nbd_handle *h, uint32_t mask ); =head1 DESCRIPTION Set which transports are allowed to appear in NBD URIs. The default is to allow any transport. The C parameter may contain any of the following flags ORed together: =over 4 =item C = 0x1 =item C = 0x2 =item C = 0x4 =back For convenience, the constant C is available to describe all transports recognized by this build of libnbd. A future version of the library may add new flags. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_uri_allow_transports can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_URI_ALLOW_TRANSPORTS 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_uri_allow_tls.pod0000444000175000017500000000445214603303744014530 =head1 NAME nbd_set_uri_allow_tls - set the allowed TLS settings in NBD URIs =head1 SYNOPSIS #include int nbd_set_uri_allow_tls ( struct nbd_handle *h, int tls ); =head1 DESCRIPTION Set which TLS settings are allowed to appear in NBD URIs. The default is to allow either non-TLS or TLS URIs. The C parameter can be: =over 4 =item C TLS URIs are not permitted, ie. a URI such as C will be rejected. =item C This is the default. TLS may be used or not, depending on whether the URI uses C or C. =item C TLS URIs are required. All URIs must use C. =back =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_uri_allow_tls can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_URI_ALLOW_TLS 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_uri_allow_local_file.pod0000444000175000017500000000377014603303744016021 =head1 NAME nbd_set_uri_allow_local_file - set the allowed transports in NBD URIs =head1 SYNOPSIS #include int nbd_set_uri_allow_local_file ( struct nbd_handle *h, bool allow ); =head1 DESCRIPTION Allow NBD URIs to reference local files. This is I by default. Currently this setting only controls whether the C parameter in NBD URIs is allowed. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_set_uri_allow_local_file can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_URI_ALLOW_LOCAL_FILE 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_connect_uri.pod0000444000175000017500000002304514636624347013320 =head1 NAME nbd_connect_uri - connect to NBD URI =head1 SYNOPSIS #include int nbd_connect_uri ( struct nbd_handle *h, const char *uri ); =head1 DESCRIPTION Connect (synchronously) to an NBD server and export by specifying the NBD URI. NBD URIs are a standard way to specify a network block device endpoint, using a syntax like C<"nbd://example.com"> which is convenient, well defined and future proof. This call works by parsing the URI parameter and calling L and L and other calls as needed, followed by L, L or L. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but L can be used for manual control over option negotiation performed before transmission phase. =head2 Example URIs supported =over 4 =item C Connect over TCP, unencrypted, to C port 10809. =item C Connect over TCP with TLS, to C port 10809. If the server does not support TLS then this will fail. =item C Connect over the Unix domain socket F to an NBD server running locally. The export name is set to C (note without any leading C character). =item C Connect over a Unix domain socket, enabling TLS and setting the path to a directory containing certificates and keys. =item C In this scenario libnbd is running in a virtual machine. Connect over C to an NBD server running on the hypervisor. =back =head2 Supported URI formats The following schemes are supported in the current version of libnbd: =over 4 =item C Connect over TCP without using TLS. =item C Connect over TCP. TLS is required and the connection will fail if the server does not support TLS. =item C =item C Connect over a Unix domain socket, without or with TLS respectively. The C parameter is required. =item C =item C Connect over the C transport, without or with TLS respectively. You can use L to see if this build of libnbd supports C. =back The authority part of the URI (C<[username@][servername][:port]>) is parsed depending on the transport. For TCP it specifies the server to connect to and optional port number. For C<+unix> it should not be present. For C<+vsock> the server name is the numeric CID (eg. C<2> to connect to the host), and the optional port number may be present. If the C is present it is used for TLS authentication. For all transports, an export name may be present, parsed in accordance with the NBD URI specification. Finally the query part of the URI can contain: =over 4 =item BF Specifies the Unix domain socket to connect on. Must be present for the C<+unix> transport and must not be present for the other transports. =item BF Set the certificates directory. See L. Note this is not allowed by default - see next section. =item BF Set the PSK file. See L. Note this is not allowed by default - see next section. =item B Do not verify the server certificate. See L. The default is C. =back =head2 Disable URI features For security reasons you might want to disable certain URI features. Pre-filtering URIs is error-prone and should not be attempted. Instead use the libnbd APIs below to control what can appear in URIs. Note you must call these functions on the same handle before calling L or L. =over 4 =item TCP, Unix domain socket or C transports Default: all allowed To select which transports are allowed call L. =item TLS Default: both non-TLS and TLS connections allowed To force TLS off or on in URIs call L. =item Connect to Unix domain socket in the local filesystem Default: allowed To prevent this you must disable the C<+unix> transport using L. =item Read from local files Default: denied To allow URIs to contain references to local files (eg. for parameters like C) call L. =back =head2 Overriding the export name It is possible to override the export name portion of a URI by using L to enable option mode, then using L and L as part of subsequent negotiation. =head2 Optional features This call will fail if libnbd was not compiled with libxml2; you can test whether this is the case with L. Support for URIs that require TLS will fail if libnbd was not compiled with gnutls; you can test whether this is the case with L. =head2 Constructing a URI from an existing connection See L. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_connect_uri can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CONNECT_URI 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server using the server's NBD URI. * * To test this with a recent version of nbdkit * that supports the '$uri' syntax, do: * * nbdkit -U - random 1M \ * --run './connect-uri $uri' * * To test connecting to a remote NBD server * listening on port 10809, do: * * ./connect-uri nbd://remote/ */ #include #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *s; int64_t size; if (argc != 2) { fprintf (stderr, "usage: %s URI\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information * (for nbd_get_canonical_export_name below) */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD URI. */ printf ("connecting to %s ...\n", argv[1]); fflush (stdout); if (nbd_connect_uri (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("connected\n"); /* Print the URI, export name, size and other info. */ printf ("requested URI: %s\n", argv[1]); s = nbd_get_uri (nbd); printf ("generated URI: %s\n", s ? s : "NULL"); free (s); size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("size: %" PRIi64 "\n", size); s = nbd_get_export_name (nbd); printf ("requested export name: %s\n", s ? s : "NULL"); free (s); #if LIBNBD_HAVE_NBD_GET_CANONICAL_EXPORT_NAME s = nbd_get_canonical_export_name (nbd); printf ("canonical export name: %s\n", s ? s : "NULL"); free (s); #endif #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION s = nbd_get_export_description (nbd); printf ("export description: %s\n", s ? s : "NULL"); free (s); #endif /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_connect_unix.pod0000444000175000017500000000741314603303744013472 =head1 NAME nbd_connect_unix - connect to NBD server over a Unix domain socket =head1 SYNOPSIS #include int nbd_connect_unix ( struct nbd_handle *h, const char *unixsocket ); =head1 DESCRIPTION Connect (synchronously) over the named Unix domain socket (C) to an NBD server running on the same machine. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but L can be used for manual control over option negotiation performed before transmission phase. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_connect_unix can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CONNECT_UNIX 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD server * and fetch and print the first sector (usually the * boot sector or partition table or filesystem * superblock). * * You can test it with nbdkit like this: * * nbdkit -U - floppy . \ * --run './fetch-first-sector $unixsocket' * * The nbdkit floppy plugin creates an MBR disk so the * first sector is the partition table. */ #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; FILE *pp; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector synchronously. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Close the libnbd handle. */ nbd_close (nbd); /* Print the first sector. */ pp = popen ("hexdump -C", "w"); if (pp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (buf, sizeof buf, 1, pp); pclose (pp); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_connect_vsock.pod0000444000175000017500000000506214603303744013632 =head1 NAME nbd_connect_vsock - connect to NBD server over AF_VSOCK protocol =head1 SYNOPSIS #include int nbd_connect_vsock ( struct nbd_handle *h, uint32_t cid, uint32_t port ); =head1 DESCRIPTION Connect (synchronously) over the C protocol from a virtual machine to an NBD server, usually running on the host. The C and C parameters specify the server address. Usually C should be C<2> (to connect to the host), and C might be C<10809> or another port number assigned to you by the host administrator. Not all systems support C; to determine if libnbd was built on a system with vsock support, see L. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but L can be used for manual control over option negotiation performed before transmission phase. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_connect_vsock can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CONNECT_VSOCK 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_connect_tcp.pod0000444000175000017500000000441414603303744013273 =head1 NAME nbd_connect_tcp - connect to NBD server over a TCP port =head1 SYNOPSIS #include int nbd_connect_tcp ( struct nbd_handle *h, const char *hostname, const char *port ); =head1 DESCRIPTION Connect (synchronously) to the NBD server listening on C. The C may be a port name such as C<"nbd">, or it may be a port number as a string such as C<"10809">. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but L can be used for manual control over option negotiation performed before transmission phase. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C, C. For more information see L. =head1 HANDLE STATE nbd_connect_tcp can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CONNECT_TCP 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_connect_socket.pod0000444000175000017500000000471614603303744014002 =head1 NAME nbd_connect_socket - connect directly to a connected socket =head1 SYNOPSIS #include int nbd_connect_socket ( struct nbd_handle *h, int sock ); =head1 DESCRIPTION Pass a connected socket C through which libnbd will talk to the NBD server. The caller is responsible for creating and connecting this socket by some method, before passing it to libnbd. If this call returns without error then socket ownership is passed to libnbd. Libnbd will close the socket when the handle is closed. The caller must not use the socket in any way. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but L can be used for manual control over option negotiation performed before transmission phase. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_connect_socket can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CONNECT_SOCKET 1 =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_connect_command.pod0000444000175000017500000001206014603303744014117 =head1 NAME nbd_connect_command - connect to NBD server command =head1 SYNOPSIS #include int nbd_connect_command ( struct nbd_handle *h, char **argv ); =head1 DESCRIPTION Run the command as a subprocess and connect to it over stdin/stdout. This is for use with NBD servers which can behave like inetd clients, such as L using the I<-s>/I<--single> flag, and L with port number set to 0. To run L, use L instead. =head2 Subprocess Libnbd will fork the C command and pass the NBD socket to it using file descriptors 0 and 1 (stdin/stdout): ┌─────────┬─────────┐ ┌────────────────┐ │ program │ libnbd │ │ NBD server │ │ │ │ │ (argv) │ │ │ socket ╍╍╍╍╍╍╍╍▶ stdin/stdout │ └─────────┴─────────┘ └────────────────┘ When the NBD handle is closed the server subprocess is killed. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but L can be used for manual control over option negotiation performed before transmission phase. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_connect_command can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CONNECT_COMMAND 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to run an NBD server * (nbdkit) as a subprocess of libnbd. */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char wbuf[512], rbuf[512]; size_t i; /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run nbdkit as a subprocess. */ char *args[] = { "nbdkit", /* You must use ‘-s’ (which tells nbdkit to serve * a single connection on stdin/stdout). */ "-s", /* It is recommended to use ‘--exit-with-parent’ * to ensure nbdkit is always cleaned up even * if the main program crashes. */ "--exit-with-parent", /* Use this to enable nbdkit debugging. */ "-v", /* The nbdkit plugin name - this is a RAM disk. */ "memory", "size=1M", /* Use NULL to terminate the arg list. */ NULL }; if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Write some random data to the first sector. */ for (i = 0; i < sizeof wbuf; ++i) wbuf[i] = i % 13; if (nbd_pwrite (nbd, wbuf, sizeof wbuf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector back. */ if (nbd_pread (nbd, rbuf, sizeof rbuf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Close the libnbd handle. */ nbd_close (nbd); /* What was read must be exactly the same as what * was written. */ if (memcmp (rbuf, wbuf, sizeof rbuf) != 0) { fprintf (stderr, "FAILED: " "read data did not match written data\n"); exit (EXIT_FAILURE); } exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_connect_systemd_socket_activation.pod0000444000175000017500000001223414603303744017765 =head1 NAME nbd_connect_systemd_socket_activation - connect using systemd socket activation =head1 SYNOPSIS #include int nbd_connect_systemd_socket_activation ( struct nbd_handle *h, char **argv ); =head1 DESCRIPTION Run the command as a subprocess and connect to it using systemd socket activation. This is especially useful for running L as a subprocess of libnbd, for example to use it to open qcow2 files. To run nbdkit as a subprocess, this function can be used, or L. To run L as a subprocess, this function cannot be used, you must use L. =head2 Socket activation Libnbd will fork the C command and pass an NBD socket to it using special C environment variables (as defined by the systemd socket activation protocol). ┌─────────┬─────────┐ ┌───────────────┐ │ program │ libnbd │ │ qemu-nbd or │ │ │ │ │ other server │ │ │ socket ╍╍╍╍╍╍╍╍▶ │ └─────────┴─────────┘ └───────────────┘ When the NBD handle is closed the server subprocess is killed. =head3 Socket name The socket activation protocol lets you optionally give the socket a name. If used, the name is passed to the NBD server using the C environment variable. To provide a socket name, call L before calling the connect function. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but L can be used for manual control over option negotiation performed before transmission phase. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_connect_systemd_socket_activation can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CONNECT_SYSTEMD_SOCKET_ACTIVATION 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to use qemu-nbd * to open a local qcow2 file. */ #include #include #include #include int main (int argc, const char *argv[]) { const char *filename; struct nbd_handle *nbd; char buf[512]; FILE *fp; if (argc != 2) { fprintf (stderr, "open-qcow2 file.qcow2\n"); exit (EXIT_FAILURE); } filename = argv[1]; /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run qemu-nbd as a subprocess using * systemd socket activation. */ char *args[] = { "qemu-nbd", "-f", "qcow2", (char *)filename, NULL }; if (nbd_connect_systemd_socket_activation (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector and print it. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } fp = popen ("hexdump -C", "w"); if (fp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (buf, sizeof buf, 1, fp); pclose (fp); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_set_socket_activation_name.pod0000444000175000017500000000477714603303744016374 =head1 NAME nbd_set_socket_activation_name - set the socket activation name =head1 SYNOPSIS #include int nbd_set_socket_activation_name ( struct nbd_handle *h, const char *socket_name ); =head1 DESCRIPTION When running an NBD server using L you can optionally name the socket. Call this function before connecting to the server. Some servers such as L can use this information to associate the socket with a name used on the command line, but most servers will ignore it. The name is passed through the C environment variable. The parameter C can be a short alphanumeric string. If it is set to the empty string (also the default when the handle is created) then the name C will be seen by the server. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_set_socket_activation_name can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SET_SOCKET_ACTIVATION_NAME 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_socket_activation_name.pod0000444000175000017500000000231014603303744016335 =head1 NAME nbd_get_socket_activation_name - get the socket activation name =head1 SYNOPSIS #include char * nbd_get_socket_activation_name ( struct nbd_handle *h ); =head1 DESCRIPTION Return the socket name used when you call L on the same handle. By default this will return the empty string meaning that the server will see the name C. =head1 RETURN VALUE This call returns a string. The caller must free the returned string to avoid a memory leak. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_SOCKET_ACTIVATION_NAME 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_is_read_only.pod0000444000175000017500000001074214615733025013446 =head1 NAME nbd_is_read_only - is the NBD export read-only? =head1 SYNOPSIS #include int nbd_is_read_only ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the NBD export is read-only; writes and write-like operations will fail. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_is_read_only can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_IS_READ_ONLY 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_flush.pod0000444000175000017500000001107214615733025012736 =head1 NAME nbd_can_flush - does the server support the flush command? =head1 SYNOPSIS #include int nbd_can_flush ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the server supports the flush command (see L, L). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_can_flush can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_FLUSH 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_fua.pod0000444000175000017500000001101514615733025012365 =head1 NAME nbd_can_fua - does the server support the FUA flag? =head1 SYNOPSIS #include int nbd_can_fua ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the server supports the FUA flag on certain commands (see L). This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_can_fua can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_FUA 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_is_rotational.pod0000444000175000017500000001112314615733025013640 =head1 NAME nbd_is_rotational - is the NBD disk rotational (like a disk)? =head1 SYNOPSIS #include int nbd_is_rotational ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the disk exposed over NBD is rotational (like a traditional floppy or hard disk). Returns false if the disk has no penalty for random access (like an SSD or RAM disk). This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_is_rotational can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_IS_ROTATIONAL 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_trim.pod0000444000175000017500000001106014615733025012565 =head1 NAME nbd_can_trim - does the server support the trim command? =head1 SYNOPSIS #include int nbd_can_trim ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the server supports the trim command (see L, L). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_can_trim can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_TRIM 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_zero.pod0000444000175000017500000001111114615733025012566 =head1 NAME nbd_can_zero - does the server support the zero command? =head1 SYNOPSIS #include int nbd_can_zero ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the server supports the zero command (see L, L). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_can_zero can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_ZERO 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_fast_zero.pod0000444000175000017500000001121614615733025013611 =head1 NAME nbd_can_fast_zero - does the server support the fast zero flag? =head1 SYNOPSIS #include int nbd_can_fast_zero ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the server supports the use of the C flag to the zero command (see L, L). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_can_fast_zero can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_FAST_ZERO 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_block_status_payload.pod0000444000175000017500000001151614615733025016026 =head1 NAME nbd_can_block_status_payload - does the server support the block status payload flag? =head1 SYNOPSIS #include int nbd_can_block_status_payload ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the server supports the use of the C flag to allow filtering of the block status command (see L). Returns false if the server does not. Note that this will never return true if L is false. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_can_block_status_payload can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_df.pod0000444000175000017500000001134614615733025012212 =head1 NAME nbd_can_df - does the server support the don't fragment flag to pread? =head1 SYNOPSIS #include int nbd_can_df ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the server supports structured reads with an ability to request a non-fragmented read (see L, L). Returns false if the server either lacks structured reads or if it does not support a non-fragmented read request. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_can_df can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_DF 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_multi_conn.pod0000444000175000017500000001144414615733025013767 =head1 NAME nbd_can_multi_conn - does the server support multi-conn? =head1 SYNOPSIS #include int nbd_can_multi_conn ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the server supports multi-conn. Returns false if the server does not. It is not safe to open multiple handles connecting to the same server if you will write to the server and the server does not advertise multi-conn support. The safe way to check for this is to open one connection, check this flag is true, then open further connections as required. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_can_multi_conn can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_MULTI_CONN 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_cache.pod0000444000175000017500000001107214615733025012660 =head1 NAME nbd_can_cache - does the server support the cache command? =head1 SYNOPSIS #include int nbd_can_cache ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if the server supports the cache command (see L, L). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_can_cache can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_CACHE 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_can_meta_context.pod0000444000175000017500000000562014603303744014307 =head1 NAME nbd_can_meta_context - does the server support a specific meta context? =head1 SYNOPSIS #include int nbd_can_meta_context ( struct nbd_handle *h, const char *metacontext ); =head1 DESCRIPTION Returns true if the server supports the given meta context (see L). Returns false if the server does not. It is possible for this command to fail if meta contexts were requested but there is a missing or failed attempt at NBD_OPT_SET_META_CONTEXT during option negotiation. If the server supports block status filtering (see L, this function must return true for any filter name passed to L. The single parameter is the name of the metadata context, for example C. Blibnbd.hE> includes defined constants for well-known namespace contexts beginning with C, but you are free to pass in other contexts. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_can_meta_context can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CAN_META_CONTEXT 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_protocol.pod0000444000175000017500000000457314603303744013502 =head1 NAME nbd_get_protocol - return the NBD protocol variant =head1 SYNOPSIS #include const char * nbd_get_protocol ( struct nbd_handle *h ); =head1 DESCRIPTION Return the NBD protocol variant in use on the connection. At the moment this returns one of the strings C<"oldstyle">, C<"newstyle"> or C<"newstyle-fixed">. Other strings might be returned in the future. Most modern NBD servers use C<"newstyle-fixed">. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a statically allocated string, valid for the lifetime of the process or until libnbd is unloaded by L. You B try to free the string. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_get_protocol can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_PROTOCOL 1 =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_size.pod0000444000175000017500000000666214603303744012614 =head1 NAME nbd_get_size - return the export size =head1 SYNOPSIS #include int64_t nbd_get_size ( struct nbd_handle *h ); =head1 DESCRIPTION Returns the size in bytes of the NBD export. Note that this call fails with C for an unlikely server that advertises a size which cannot fit in a 64-bit signed integer. L I<--size> option is a way to access this API from shell scripts. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a 64 bit signed integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_get_size can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_SIZE 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD * server and read the size of the disk. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './get-size $unixsocket' */ #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t size; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the size in bytes and print it. */ size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("%s: size = %" PRIi64 " bytes\n", argv[1], size); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_block_size.pod0000444000175000017500000001117114603303744013755 =head1 NAME nbd_get_block_size - return a specific server block size constraint =head1 SYNOPSIS #include int64_t nbd_get_block_size ( struct nbd_handle *h, int size_type ); =head1 DESCRIPTION Returns a specific block size constraint advertised by the server. If zero is returned it means the server did not advertise a constraint. Constraints are hints. Servers differ in their behaviour as to whether they enforce constraints or not. The C parameter selects which constraint to read. It can be one of: =over 4 =item C = 0 If non-zero, this will be a power of 2 between 1 and 64k; any client request that is not aligned in length or offset to this size is likely to fail with C. The image size will generally also be a multiple of this value (if not, the final few bytes are inaccessible while obeying alignment constraints). If zero (meaning no information was returned by the server), it is safest to assume a minimum block size of 512, although many servers support a minimum block size of 1. If the server provides a constraint, then libnbd defaults to honoring that constraint client-side unless C is cleared in C. =item C = 1 If non-zero, this is a power of 2 representing the preferred size for efficient I/O. Smaller requests may incur overhead such as read-modify-write cycles that will not be present when using I/O that is a multiple of this value. This value may be larger than the size of the export. If zero (meaning no information was returned by the server), using 4k as a preferred block size tends to give decent performance. =item C = 2 If non-zero, this represents the maximum length that the server is willing to handle during L or L. Other functions like L may still be able to use larger sizes. Note that this function returns what the server advertised, but libnbd itself imposes a maximum of 64M. If zero (meaning no information was returned by the server), some NBD servers will abruptly disconnect if a transaction sends or receives more than 32M of data. =item C = 3 This value is not advertised by the server, but rather represents the maximum outgoing payload size for a given connection that libnbd will enforce unless C is cleared in C. It is always non-zero: never smaller than 1M, never larger than 64M, and matches C when possible. =back Future NBD extensions may result in additional C values. Note that by default, libnbd requests all available block sizes, but that a server may differ in what sizes it chooses to report if L alters whether the client requests sizes. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. =head1 RETURN VALUE This call returns a 64 bit signed integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_get_block_size can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_BLOCK_SIZE 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_pread.pod0000444000175000017500000001164014603303744012066 =head1 NAME nbd_pread - read from the NBD server =head1 SYNOPSIS #include int nbd_pread ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, uint32_t flags ); =head1 DESCRIPTION Issue a read command to the NBD server for the range starting at C and ending at C + C - 1. NBD can only read all or nothing using this call. The call returns when the data has been read fully into C or there is an error. See also L, if finer visibility is required into the server's replies, or if you want to use C. Note that libnbd currently enforces a maximum read buffer of 64MiB, even if the server would permit a larger buffer in a single transaction; attempts to exceed this will result in an C error. The server may enforce a smaller limit, which can be learned with L. The C parameter must be C<0> for now (it exists for future NBD protocol extensions). Note that if this command fails, and L returns true, then libnbd sanitized C, but it is unspecified whether the contents of C will read as zero or as partial results from the server. If L returns false, then libnbd did not sanitize C, and the contents are undefined on failure. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_pread can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_PREAD 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to connect to an NBD server * and fetch and print the first sector (usually the * boot sector or partition table or filesystem * superblock). * * You can test it with nbdkit like this: * * nbdkit -U - floppy . \ * --run './fetch-first-sector $unixsocket' * * The nbdkit floppy plugin creates an MBR disk so the * first sector is the partition table. */ #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; FILE *pp; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector synchronously. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Close the libnbd handle. */ nbd_close (nbd); /* Print the first sector. */ pp = popen ("hexdump -C", "w"); if (pp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (buf, sizeof buf, 1, pp); pclose (pp); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_pread_structured.pod0000444000175000017500000001463514603303744014361 =head1 NAME nbd_pread_structured - read from the NBD server =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error); void *user_data; void (*free) (void *user_data); } nbd_chunk_callback; int nbd_pread_structured ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, uint32_t flags ); =head1 DESCRIPTION Issue a read command to the NBD server for the range starting at C and ending at C + C - 1. The server's response may be subdivided into chunks which may arrive out of order before reassembly into the original buffer; the C callback is used for notification after each chunk arrives, and may perform additional sanity checking on the server's reply. The callback cannot call C APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns C<-1>, and no earlier error has been detected, then the overall read command will fail with any non-zero value stored into the callback's C parameter (with a default of C); but any further chunks will still invoke the callback. The C function is called once per chunk of data received, with the C passed to this function. The C and C parameters represent the subset of the original buffer which has just been populated by results from the server (in C, C always points within the original C; but this guarantee may not extend to other language bindings). The C parameter represents the absolute offset at which C begins within the image (note that this is not the relative offset of C within the original buffer C). Changes to C on output are ignored unless the callback fails. The input meaning of the C parameter is controlled by the C parameter, which is one of =over 4 =item C = 1 C was populated with C bytes of data. On input, C contains the errno value of any earlier detected error, or zero. =item C = 2 C represents a hole, and contains C NUL bytes. On input, C contains the errno value of any earlier detected error, or zero. =item C = 3 C is 0, so C is unusable. On input, C contains the errno value reported by the server as occurring while reading that C, regardless if any earlier error has been detected. =back Future NBD extensions may permit other values for C, but those will not be returned to a client that has not opted in to requesting such extensions. If the server is non-compliant, it is possible for the C function to be called more times than you expect or with C 0 for C or C. It is also possible that the C function is not called at all (in particular, C is used only when an error is associated with a particular offset, and not when the server reports a generic error), but you are guaranteed that the callback was called at least once if the overall read succeeds. Libnbd does not validate that the server obeyed the requirement that a read call must not have overlapping chunks and must not succeed without enough chunks to cover the entire request. Note that libnbd currently enforces a maximum read buffer of 64MiB, even if the server would permit a larger buffer in a single transaction; attempts to exceed this will result in an C error. The server may enforce a smaller limit, which can be learned with L. The C parameter may be C<0> for no flags, or may contain C meaning that the server should not reply with more than one fragment (if that is supported - some servers cannot do this, see L). Libnbd does not validate that the server actually obeys the flag. Note that if this command fails, and L returns true, then libnbd sanitized C, but it is unspecified whether the contents of C will read as zero or as partial results from the server. If L returns false, then libnbd did not sanitize C, and the contents are undefined on failure. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_pread_structured can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_PREAD_STRUCTURED 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_pwrite.pod0000444000175000017500000001415014615733025012306 =head1 NAME nbd_pwrite - write to the NBD server =head1 SYNOPSIS #include int nbd_pwrite ( struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, uint32_t flags ); =head1 DESCRIPTION Issue a write command to the NBD server, writing the data in C to the range starting at C and ending at C + C - 1. NBD can only write all or nothing using this call. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if L is true. Note that libnbd defaults to enforcing a maximum write buffer of the lesser of 64MiB or any maximum payload size advertised by the server; attempts to exceed this will generally result in a client-side C error, rather than a server-side disconnection. The actual limit can be learned with L. The C parameter may be C<0> for no flags, or may contain C meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see L). For convenience, unless C was used to disable C, libnbd ignores the presence or absence of the flag C in C, while correctly using the flag over the wire according to whether extended headers were negotiated. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_pwrite can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_PWRITE 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to do synchronous reads * and writes randomly over the first megabyte of an * NBD server. Note this will destroy any existing * content on the NBD server. * * To test it with nbdkit and a RAM disk: * * nbdkit -U - memory 1M \ * --run './simple-reads-and-writes $unixsocket' */ #include #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; size_t i; int64_t exportsize; uint64_t offset; srand (time (NULL)); if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Get the size of the disk and check * it's large enough. */ exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (exportsize >= sizeof buf); /* Check that the server is writable. */ if (nbd_is_read_only (nbd) == 1) { fprintf (stderr, "%s: " "error: this NBD export is read-only\n", argv[0]); exit (EXIT_FAILURE); } for (i = 0; i < sizeof buf; ++i) buf[i] = rand (); /* 1000 writes. */ for (i = 0; i < 1000; ++i) { offset = rand () % (exportsize - sizeof buf); if (nbd_pwrite (nbd, buf, sizeof buf, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* 1000 reads and writes. */ for (i = 0; i < 1000; ++i) { offset = rand () % (exportsize - sizeof buf); if (nbd_pread (nbd, buf, sizeof buf, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } offset = rand () % (exportsize - sizeof buf); if (nbd_pwrite (nbd, buf, sizeof buf, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Sends a graceful shutdown to the server. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_shutdown.pod0000444000175000017500000001302414615733025012646 =head1 NAME nbd_shutdown - disconnect from the NBD server =head1 SYNOPSIS #include int nbd_shutdown ( struct nbd_handle *h, uint32_t flags ); =head1 DESCRIPTION Issue the disconnect command to the NBD server. This is a nice way to tell the server we are going away, but from the client's point of view has no advantage over abruptly closing the connection (see L). This function works whether or not the handle is ready for transmission of commands. If more fine-grained control is needed, see L and L. The C argument is a bitmask, including zero or more of the following shutdown flags: =over 4 =item C = 0x10000 If there are any pending requests which have not yet been sent to the server (see L), abandon them without sending them to the server, rather than the usual practice of issuing those commands before informing the server of the intent to disconnect. =back For convenience, the constant C is available to describe all shutdown flags recognized by this build of libnbd. A future version of the library may add new flags. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_shutdown can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SHUTDOWN 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to do synchronous reads * and writes randomly over the first megabyte of an * NBD server. Note this will destroy any existing * content on the NBD server. * * To test it with nbdkit and a RAM disk: * * nbdkit -U - memory 1M \ * --run './simple-reads-and-writes $unixsocket' */ #include #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; size_t i; int64_t exportsize; uint64_t offset; srand (time (NULL)); if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Get the size of the disk and check * it's large enough. */ exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (exportsize >= sizeof buf); /* Check that the server is writable. */ if (nbd_is_read_only (nbd) == 1) { fprintf (stderr, "%s: " "error: this NBD export is read-only\n", argv[0]); exit (EXIT_FAILURE); } for (i = 0; i < sizeof buf; ++i) buf[i] = rand (); /* 1000 writes. */ for (i = 0; i < 1000; ++i) { offset = rand () % (exportsize - sizeof buf); if (nbd_pwrite (nbd, buf, sizeof buf, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* 1000 reads and writes. */ for (i = 0; i < 1000; ++i) { offset = rand () % (exportsize - sizeof buf); if (nbd_pread (nbd, buf, sizeof buf, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } offset = rand () % (exportsize - sizeof buf); if (nbd_pwrite (nbd, buf, sizeof buf, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Sends a graceful shutdown to the server. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_flush.pod0000444000175000017500000000465414603303744012123 =head1 NAME nbd_flush - send flush command to the NBD server =head1 SYNOPSIS #include int nbd_flush ( struct nbd_handle *h, uint32_t flags ); =head1 DESCRIPTION Issue the flush command to the NBD server. The function should return when all write commands which have completed have been committed to permanent storage on the server. Note this will generally return an error if L is false. The C parameter must be C<0> for now (it exists for future NBD protocol extensions). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_flush can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_FLUSH 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_trim.pod0000444000175000017500000000636414603303744011755 =head1 NAME nbd_trim - send trim command to the NBD server =head1 SYNOPSIS #include int nbd_trim ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ); =head1 DESCRIPTION Issue a trim command to the NBD server, which if supported by the server causes a hole to be punched in the backing store starting at C and ending at C + C - 1. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if L is false or L is true. Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum trim size, although a future extension may add a constraint visible in L. The C parameter may be C<0> for no flags, or may contain C meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see L). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_trim can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_TRIM 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_cache.pod0000444000175000017500000000600714603303744012037 =head1 NAME nbd_cache - send cache (prefetch) command to the NBD server =head1 SYNOPSIS #include int nbd_cache ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ); =head1 DESCRIPTION Issue the cache (prefetch) command to the NBD server, which if supported by the server causes data to be prefetched into faster storage by the server, speeding up a subsequent L call. The server can also silently ignore this command. Note this will generally return an error if L is false. Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum cache size, although a future extension may add a constraint visible in L. The C parameter must be C<0> for now (it exists for future NBD protocol extensions). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_cache can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CACHE 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_zero.pod0000444000175000017500000000731314603303744011754 =head1 NAME nbd_zero - send write zeroes command to the NBD server =head1 SYNOPSIS #include int nbd_zero ( struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags ); =head1 DESCRIPTION Issue a write zeroes command to the NBD server, which if supported by the server causes a zeroes to be written efficiently starting at C and ending at C + C - 1. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if L is false or L is true. Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum zero size, although a future extension may add a constraint visible in L. Also, some servers may permit a larger zero request only when the C is in use. The C parameter may be C<0> for no flags, or may contain C meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see L), C meaning that the server should favor writing actual allocated zeroes over punching a hole, and/or C meaning that the server must fail quickly if writing zeroes is no faster than a normal write (if that is supported - some servers cannot do this, see L). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_zero can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_ZERO 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_block_status.pod0000444000175000017500000001433514603303744013474 =head1 NAME nbd_block_status - send block status command, with 32-bit callback =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error); void *user_data; void (*free) (void *user_data); } nbd_extent_callback; int nbd_block_status ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, uint32_t flags ); =head1 DESCRIPTION Issue the block status command to the NBD server. If supported by the server, this causes metadata context information about blocks beginning from the specified offset to be returned. The C parameter is a hint: the server may choose to return less status, or the final block may extend beyond the requested range. If multiple contexts are supported, the number of blocks and cumulative length of those blocks need not be identical between contexts. Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum block status size, although a future extension may add a constraint visible in L. Furthermore, this function is inherently limited to 32-bit values. If the server replies with a larger extent, the length of that extent will be truncated to just below 32 bits and any further extents from the server will be ignored. If the server replies with a status value larger than 32 bits (only possible when extended headers are in use), the callback function will be passed an C error. To get the full extent information from a server that supports 64-bit extents, you must use L. Depending on which metadata contexts were enabled before connecting (see L) and which are supported by the server (see L) this call returns information about extents by calling back to the C function. The callback cannot call C APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns C<-1>, and no earlier error has been detected, then the overall block status command will fail with any non-zero value stored into the callback's C parameter (with a default of C); but any further contexts will still invoke the callback. The C function is called once per type of metadata available, with the C passed to this function. The C parameter is a string such as C<"base:allocation">. The C array is an array of pairs of integers with the first entry in each pair being the length (in bytes) of the block and the second entry being a status/flags field which is specific to the metadata context. The number of pairs passed to the function is C. The NBD protocol document in the section about C describes the meaning of this array; for contexts known to libnbd, Blibnbd.hE> contains constants beginning with C that may help decipher the values. On entry to the callback, the C parameter contains the errno value of any previously detected error, but even if an earlier error was detected, the current C and C are valid. It is possible for the extent function to be called more times than you expect (if the server is buggy), so always check the C field to ensure you are receiving the data you expect. It is also possible that the extent function is not called at all, even for metadata contexts that you requested. This indicates either that the server doesn't support the context or for some other reason cannot return the data. The C parameter may be C<0> for no flags, or may contain C meaning that the server should return only one extent per metadata context where that extent does not exceed C bytes; however, libnbd does not validate that the server obeyed the flag. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_block_status can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_BLOCK_STATUS 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_block_status_64.pod0000444000175000017500000001354714603303744014011 =head1 NAME nbd_block_status_64 - send block status command, with 64-bit callback =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error); void *user_data; void (*free) (void *user_data); } nbd_extent64_callback; int nbd_block_status_64 ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, uint32_t flags ); =head1 DESCRIPTION Issue the block status command to the NBD server. If supported by the server, this causes metadata context information about blocks beginning from the specified offset to be returned. The C parameter is a hint: the server may choose to return less status, or the final block may extend beyond the requested range. When multiple contexts are supported, the number of blocks and cumulative length of those blocks need not be identical between contexts; this command generally returns the status of all negotiated contexts, while some servers also support a filtered request (see L, L). Note that not all servers can support a C of 4GiB or larger; L indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum block status size, although a future extension may add a constraint visible in L. Depending on which metadata contexts were enabled before connecting (see L) and which are supported by the server (see L) this call returns information about extents by calling back to the C function. The callback cannot call C APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns C<-1>, and no earlier error has been detected, then the overall block status command will fail with any non-zero value stored into the callback's C parameter (with a default of C); but any further contexts will still invoke the callback. The C function is called once per type of metadata available, with the C passed to this function. The C parameter is a string such as C<"base:allocation">. The C array is an array of B structs, containing length (in bytes) of the block and a status/flags field which is specific to the metadata context. The number of array entries passed to the function is C. The NBD protocol document in the section about C describes the meaning of this array; for contexts known to libnbd, Blibnbd.hE> contains constants beginning with C that may help decipher the values. On entry to the callback, the C parameter contains the errno value of any previously detected error. It is possible for the extent function to be called more times than you expect (if the server is buggy), so always check the C field to ensure you are receiving the data you expect. It is also possible that the extent function is not called at all, even for metadata contexts that you requested. This indicates either that the server doesn't support the context or for some other reason cannot return the data. The C parameter may be C<0> for no flags, or may contain C meaning that the server should return only one extent per metadata context where that extent does not exceed C bytes; however, libnbd does not validate that the server obeyed the flag. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_block_status_64 can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_BLOCK_STATUS_64 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_poll.pod0000444000175000017500000001157414603303744011747 =head1 NAME nbd_poll - poll the handle once =head1 SYNOPSIS #include int nbd_poll ( struct nbd_handle *h, int timeout ); =head1 DESCRIPTION This is a simple implementation of L which is used internally by synchronous API calls. On success, it returns C<0> if the C (in milliseconds) occurs, or C<1> if the poll completed and the state machine progressed. Set C to C<-1> to block indefinitely (but be careful that eventual action is actually expected - for example, if the connection is established but there are no commands in flight, using an infinite timeout will permanently block). This function is mainly useful as an example of how you might integrate libnbd with your own main loop, rather than being intended as something you would use. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_POLL 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to use the AIO (asynchronous) low * level API to connect to a server and read the disk. * * Here are a few ways to try this example: * * nbdkit -U - linuxdisk . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - floppy . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - pattern size=1M \ * --run './aio-connect-read $unixsocket' */ #include #include #include #include #include #include #include #define NR_SECTORS 32 #define SECTOR_SIZE 512 struct data { uint64_t offset; char sector[SECTOR_SIZE]; }; static int hexdump (void *user_data, int *error) { struct data *data = user_data; FILE *pp; if (*error) { errno = *error; perror ("failed to read"); exit (EXIT_FAILURE); } printf ("sector at offset 0x%" PRIx64 ":\n", data->offset); pp = popen ("hexdump -C", "w"); if (pp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (data->sector, SECTOR_SIZE, 1, pp); pclose (pp); printf ("\n"); /* Returning 1 from the callback automatically retires * the command. */ return 1; } static struct data data[NR_SECTORS]; int main (int argc, char *argv[]) { struct nbd_handle *nbd; size_t i; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a Unix domain socket. * This only starts the connection. */ if (nbd_aio_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Wait for the connection to complete. The use of * nbd_poll here is only as an example. You could also * integrate this with poll(2), glib or another main * loop. Read libnbd(3) and the source file lib/poll.c. */ while (!nbd_aio_is_ready (nbd)) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } assert (nbd_get_size (nbd) >= NR_SECTORS * SECTOR_SIZE); /* Issue read commands for the first NR sectors. */ for (i = 0; i < NR_SECTORS; ++i) { data[i].offset = i * SECTOR_SIZE; /* The callback (hexdump) is called when the command * completes. The buffer must continue to exist while * the command is running. */ if (nbd_aio_pread (nbd, data[i].sector, SECTOR_SIZE, data[i].offset, (nbd_completion_callback) { .callback = hexdump, .user_data = &data[i], }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Run the main loop until all the commands have * completed and retired. Again the use of nbd_poll * here is only as an example. */ while (nbd_aio_in_flight (nbd) > 0) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_block_status_filter.pod0000444000175000017500000000657414603303744015047 =head1 NAME nbd_block_status_filter - send filtered block status command, with 64-bit callback =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error); void *user_data; void (*free) (void *user_data); } nbd_extent64_callback; int nbd_block_status_filter ( struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, uint32_t flags ); =head1 DESCRIPTION Issue a filtered block status command to the NBD server. If supported by the server (see L), this causes metadata context information about blocks beginning from the specified offset to be returned, and with the result limited to just the contexts specified in C. Note that all strings in C must be supported by L. All other parameters to this function have the same semantics as in L; except that for convenience, unless was used to disable C, libnbd ignores the presence or absence of the flag C in C, while correctly using the flag over the wire. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_block_status_filter can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_BLOCK_STATUS_FILTER 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_poll2.pod0000444000175000017500000000203614603303744012022 =head1 NAME nbd_poll2 - poll the handle once, with fd =head1 SYNOPSIS #include int nbd_poll2 ( struct nbd_handle *h, int fd, int timeout ); =head1 DESCRIPTION This is the same as L, but an additional file descriptor parameter is passed. The additional fd is also polled (using C). One use for this is to wait for an L. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_POLL2 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_connect.pod0000444000175000017500000000457714603303744013267 =head1 NAME nbd_aio_connect - connect to the NBD server =head1 SYNOPSIS #include int nbd_aio_connect ( struct nbd_handle *h, const struct sockaddr *addr, socklen_t addrlen ); =head1 DESCRIPTION Begin connecting to the NBD server. The C and C parameters specify the address of the socket to connect to. You can check if the connection attempt is still underway by calling L. If L is enabled, the connection is ready for manual option negotiation once L returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once L returns true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_connect can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_CONNECT 1 =head1 SEE ALSO L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_connect_uri.pod0000444000175000017500000000464714603303744014144 =head1 NAME nbd_aio_connect_uri - connect to an NBD URI =head1 SYNOPSIS #include int nbd_aio_connect_uri ( struct nbd_handle *h, const char *uri ); =head1 DESCRIPTION Begin connecting to the NBD URI C. Parameters behave as documented in L. You can check if the connection attempt is still underway by calling L. If L is enabled, the connection is ready for manual option negotiation once L returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once L returns true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_connect_uri can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_CONNECT_URI 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_connect_unix.pod0000444000175000017500000001356614603303744014330 =head1 NAME nbd_aio_connect_unix - connect to the NBD server over a Unix domain socket =head1 SYNOPSIS #include int nbd_aio_connect_unix ( struct nbd_handle *h, const char *unixsocket ); =head1 DESCRIPTION Begin connecting to the NBD server over Unix domain socket (C). Parameters behave as documented in L. You can check if the connection attempt is still underway by calling L. If L is enabled, the connection is ready for manual option negotiation once L returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once L returns true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_connect_unix can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_CONNECT_UNIX 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to use the AIO (asynchronous) low * level API to connect to a server and read the disk. * * Here are a few ways to try this example: * * nbdkit -U - linuxdisk . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - floppy . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - pattern size=1M \ * --run './aio-connect-read $unixsocket' */ #include #include #include #include #include #include #include #define NR_SECTORS 32 #define SECTOR_SIZE 512 struct data { uint64_t offset; char sector[SECTOR_SIZE]; }; static int hexdump (void *user_data, int *error) { struct data *data = user_data; FILE *pp; if (*error) { errno = *error; perror ("failed to read"); exit (EXIT_FAILURE); } printf ("sector at offset 0x%" PRIx64 ":\n", data->offset); pp = popen ("hexdump -C", "w"); if (pp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (data->sector, SECTOR_SIZE, 1, pp); pclose (pp); printf ("\n"); /* Returning 1 from the callback automatically retires * the command. */ return 1; } static struct data data[NR_SECTORS]; int main (int argc, char *argv[]) { struct nbd_handle *nbd; size_t i; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a Unix domain socket. * This only starts the connection. */ if (nbd_aio_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Wait for the connection to complete. The use of * nbd_poll here is only as an example. You could also * integrate this with poll(2), glib or another main * loop. Read libnbd(3) and the source file lib/poll.c. */ while (!nbd_aio_is_ready (nbd)) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } assert (nbd_get_size (nbd) >= NR_SECTORS * SECTOR_SIZE); /* Issue read commands for the first NR sectors. */ for (i = 0; i < NR_SECTORS; ++i) { data[i].offset = i * SECTOR_SIZE; /* The callback (hexdump) is called when the command * completes. The buffer must continue to exist while * the command is running. */ if (nbd_aio_pread (nbd, data[i].sector, SECTOR_SIZE, data[i].offset, (nbd_completion_callback) { .callback = hexdump, .user_data = &data[i], }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Run the main loop until all the commands have * completed and retired. Again the use of nbd_poll * here is only as an example. */ while (nbd_aio_in_flight (nbd) > 0) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_connect_vsock.pod0000444000175000017500000000467714603303744014475 =head1 NAME nbd_aio_connect_vsock - connect to the NBD server over AF_VSOCK socket =head1 SYNOPSIS #include int nbd_aio_connect_vsock ( struct nbd_handle *h, uint32_t cid, uint32_t port ); =head1 DESCRIPTION Begin connecting to the NBD server over the C protocol to the server C. Parameters behave as documented in L. You can check if the connection attempt is still underway by calling L. If L is enabled, the connection is ready for manual option negotiation once L returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once L returns true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_connect_vsock can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_CONNECT_VSOCK 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_connect_tcp.pod0000444000175000017500000000467314603303744014132 =head1 NAME nbd_aio_connect_tcp - connect to the NBD server over a TCP port =head1 SYNOPSIS #include int nbd_aio_connect_tcp ( struct nbd_handle *h, const char *hostname, const char *port ); =head1 DESCRIPTION Begin connecting to the NBD server listening on C. Parameters behave as documented in L. You can check if the connection attempt is still underway by calling L. If L is enabled, the connection is ready for manual option negotiation once L returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once L returns true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C, C. For more information see L. =head1 HANDLE STATE nbd_aio_connect_tcp can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_CONNECT_TCP 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_connect_socket.pod0000444000175000017500000000457514603303744014635 =head1 NAME nbd_aio_connect_socket - connect directly to a connected socket =head1 SYNOPSIS #include int nbd_aio_connect_socket ( struct nbd_handle *h, int sock ); =head1 DESCRIPTION Begin connecting to the connected socket C. Parameters behave as documented in L. You can check if the connection attempt is still underway by calling L. If L is enabled, the connection is ready for manual option negotiation once L returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once L returns true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_connect_socket can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_CONNECT_SOCKET 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_connect_command.pod0000444000175000017500000000464114603303744014755 =head1 NAME nbd_aio_connect_command - connect to the NBD server =head1 SYNOPSIS #include int nbd_aio_connect_command ( struct nbd_handle *h, char **argv ); =head1 DESCRIPTION Run the command as a subprocess and begin connecting to it over stdin/stdout. Parameters behave as documented in L. You can check if the connection attempt is still underway by calling L. If L is enabled, the connection is ready for manual option negotiation once L returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once L returns true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_connect_command can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_CONNECT_COMMAND 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_connect_systemd_socket_activation.pod0000444000175000017500000000505114603303744020614 =head1 NAME nbd_aio_connect_systemd_socket_activation - connect using systemd socket activation =head1 SYNOPSIS #include int nbd_aio_connect_systemd_socket_activation ( struct nbd_handle *h, char **argv ); =head1 DESCRIPTION Run the command as a subprocess and begin connecting to it using systemd socket activation. Parameters behave as documented in L. You can check if the connection attempt is still underway by calling L. If L is enabled, the connection is ready for manual option negotiation once L returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once L returns true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_connect_systemd_socket_activation can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ✅ allowed │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.2. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_CONNECT_SYSTEMD_SOCKET_ACTIVATION 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_go.pod0000444000175000017500000000557614603303744013125 =head1 NAME nbd_aio_opt_go - end negotiation and move on to using an export =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_go ( struct nbd_handle *h, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server finish negotiation and move on to serving the export previously specified by the most recent L or L. This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that directly detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback; however it is also possible to indirectly detect an error when L returns true. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_go can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_GO 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_abort.pod0000444000175000017500000000411414603303744013612 =head1 NAME nbd_aio_opt_abort - end negotiation and close the connection =head1 SYNOPSIS #include int nbd_aio_opt_abort ( struct nbd_handle *h ); =head1 DESCRIPTION Request that the server finish negotiation, gracefully if possible, then close the connection. This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_abort can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_ABORT 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_starttls.pod0000444000175000017500000000527014603303744014367 =head1 NAME nbd_aio_opt_starttls - request the server to initiate TLS =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_starttls ( struct nbd_handle *h, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server initiate a secure TLS connection, by sending C. This behaves like the synchronous counterpart L, except that it does not wait for the server's response. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_starttls can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_STARTTLS 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_extended_headers.pod0000444000175000017500000000535714603303744016010 =head1 NAME nbd_aio_opt_extended_headers - request the server to enable extended headers =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_extended_headers ( struct nbd_handle *h, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server use extended headers, by sending C. This behaves like the synchronous counterpart L, except that it does not wait for the server's response. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_extended_headers can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_EXTENDED_HEADERS 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_structured_reply.pod0000444000175000017500000000536314603303744016131 =head1 NAME nbd_aio_opt_structured_reply - request the server to enable structured replies =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_structured_reply ( struct nbd_handle *h, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server use structured replies, by sending C. This behaves like the synchronous counterpart L, except that it does not wait for the server's response. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_structured_reply can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_STRUCTURED_REPLY 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_list.pod0000444000175000017500000000551714603303744013466 =head1 NAME nbd_aio_opt_list - request the server to list all exports during negotiation =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name, const char *description); void *user_data; void (*free) (void *user_data); } nbd_list_callback; typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_list ( struct nbd_handle *h, nbd_list_callback list_callback, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server list all exports that it supports. This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_list can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_LIST 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_info.pod0000444000175000017500000000540714603303744013444 =head1 NAME nbd_aio_opt_info - request the server for information about an export =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_info ( struct nbd_handle *h, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server supply information about the export name previously specified by the most recent L or L. This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_info can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_INFO 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_list_meta_context.pod0000444000175000017500000000640214603303744016232 =head1 NAME nbd_aio_opt_list_meta_context - request list of available meta contexts, using implicit query =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name); void *user_data; void (*free) (void *user_data); } nbd_context_callback; typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_list_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server list available meta contexts associated with the export previously specified by the most recent L or L, and with a list of queries from prior calls to L (see L if you want to supply an explicit query list instead). This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_list_meta_context can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.6. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_LIST_META_CONTEXT 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_list_meta_context_queries.pod0000444000175000017500000000641514603303744017773 =head1 NAME nbd_aio_opt_list_meta_context_queries - request list of available meta contexts, using explicit query =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name); void *user_data; void (*free) (void *user_data); } nbd_context_callback; typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_list_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server list available meta contexts associated with the export previously specified by the most recent L or L, and with an explicit list of queries provided as a parameter (see L if you want to reuse an implicit query list instead). This can only be used if L enabled option mode. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_list_meta_context_queries can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_LIST_META_CONTEXT_QUERIES 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_set_meta_context.pod0000444000175000017500000000722314603303744016054 =head1 NAME nbd_aio_opt_set_meta_context - select specific meta contexts, with implicit query list =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name); void *user_data; void (*free) (void *user_data); } nbd_context_callback; typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_set_meta_context ( struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server supply all recognized meta contexts registered through prior calls to L, in conjunction with the export previously specified by the most recent L or L. This can only be used if L enabled option mode. Normally, this function is redundant, as L automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with L to bypass the automatic context request normally performed by L. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_set_meta_context can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_SET_META_CONTEXT 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_opt_set_meta_context_queries.pod0000444000175000017500000000722514603303744017613 =head1 NAME nbd_aio_opt_set_meta_context_queries - select specific meta contexts, with explicit query list =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *name); void *user_data; void (*free) (void *user_data); } nbd_context_callback; typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int nbd_aio_opt_set_meta_context_queries ( struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback ); =head1 DESCRIPTION Request that the server supply all recognized meta contexts passed in through C, in conjunction with the export previously specified by the most recent L or L. This can only be used if L enabled option mode. Normally, this function is redundant, as L automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with L to bypass the automatic context request normally performed by L. To determine when the request completes, wait for L to return false. Or supply the optional C which will be invoked as described in L, except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_opt_set_meta_context_queries can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ❌ error │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_OPT_SET_META_CONTEXT_QUERIES 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_pread.pod0000444000175000017500000001552314603303744012722 =head1 NAME nbd_aio_pread - read from the NBD server =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_pread ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Issue a read command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Note that you must ensure C is valid until the command has completed. Furthermore, if the C parameter to C is set or if L reports failure, and if L returns true, then libnbd sanitized C, but it is unspecified whether the contents of C will read as zero or as partial results from the server. If L returns false, then libnbd did not sanitize C, and the contents are undefined on failure. Other parameters behave as documented in L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_pread can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_PREAD 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to use the AIO (asynchronous) low * level API to connect to a server and read the disk. * * Here are a few ways to try this example: * * nbdkit -U - linuxdisk . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - floppy . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - pattern size=1M \ * --run './aio-connect-read $unixsocket' */ #include #include #include #include #include #include #include #define NR_SECTORS 32 #define SECTOR_SIZE 512 struct data { uint64_t offset; char sector[SECTOR_SIZE]; }; static int hexdump (void *user_data, int *error) { struct data *data = user_data; FILE *pp; if (*error) { errno = *error; perror ("failed to read"); exit (EXIT_FAILURE); } printf ("sector at offset 0x%" PRIx64 ":\n", data->offset); pp = popen ("hexdump -C", "w"); if (pp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (data->sector, SECTOR_SIZE, 1, pp); pclose (pp); printf ("\n"); /* Returning 1 from the callback automatically retires * the command. */ return 1; } static struct data data[NR_SECTORS]; int main (int argc, char *argv[]) { struct nbd_handle *nbd; size_t i; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a Unix domain socket. * This only starts the connection. */ if (nbd_aio_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Wait for the connection to complete. The use of * nbd_poll here is only as an example. You could also * integrate this with poll(2), glib or another main * loop. Read libnbd(3) and the source file lib/poll.c. */ while (!nbd_aio_is_ready (nbd)) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } assert (nbd_get_size (nbd) >= NR_SECTORS * SECTOR_SIZE); /* Issue read commands for the first NR sectors. */ for (i = 0; i < NR_SECTORS; ++i) { data[i].offset = i * SECTOR_SIZE; /* The callback (hexdump) is called when the command * completes. The buffer must continue to exist while * the command is running. */ if (nbd_aio_pread (nbd, data[i].sector, SECTOR_SIZE, data[i].offset, (nbd_completion_callback) { .callback = hexdump, .user_data = &data[i], }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Run the main loop until all the commands have * completed and retired. Again the use of nbd_poll * here is only as an example. */ while (nbd_aio_in_flight (nbd) > 0) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_pread_structured.pod0000444000175000017500000000737114603303744015210 =head1 NAME nbd_aio_pread_structured - read from the NBD server =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error); void *user_data; void (*free) (void *user_data); } nbd_chunk_callback; typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_pread_structured ( struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Issue a read command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Note that you must ensure C is valid until the command has completed. Furthermore, if the C parameter to C is set or if L reports failure, and if L returns true, then libnbd sanitized C, but it is unspecified whether the contents of C will read as zero or as partial results from the server. If L returns false, then libnbd did not sanitize C, and the contents are undefined on failure. Other parameters behave as documented in L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_pread_structured can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_PREAD_STRUCTURED 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_pwrite.pod0000444000175000017500000000562714603303744013145 =head1 NAME nbd_aio_pwrite - write to the NBD server =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_pwrite ( struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Issue a write command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Note that you must ensure C is valid until the command has completed. Other parameters behave as documented in L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_pwrite can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_PWRITE 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_disconnect.pod0000444000175000017500000000514014603303744013752 =head1 NAME nbd_aio_disconnect - disconnect from the NBD server =head1 SYNOPSIS #include int nbd_aio_disconnect ( struct nbd_handle *h, uint32_t flags ); =head1 DESCRIPTION Issue the disconnect command to the NBD server. This is not a normal command because NBD servers are not obliged to send a reply. Instead you should wait for L to become true on the connection. Once this command is issued, you cannot issue any further commands. Although libnbd does not prevent you from issuing this command while still waiting on the replies to previous commands, the NBD protocol recommends that you wait until there are no other commands in flight (see L), to give the server a better chance at a clean shutdown. The C parameter must be C<0> for now (it exists for future NBD protocol extensions). There is no direct synchronous counterpart; however, L will call this function if appropriate. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_disconnect can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_DISCONNECT 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_flush.pod0000444000175000017500000000541614603303744012750 =head1 NAME nbd_aio_flush - send flush command to the NBD server =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_flush ( struct nbd_handle *h, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Issue the flush command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_flush can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_FLUSH 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_trim.pod0000444000175000017500000000545714603303744012607 =head1 NAME nbd_aio_trim - send trim command to the NBD server =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_trim ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Issue a trim command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_trim can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_TRIM 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_cache.pod0000444000175000017500000000552014603303744012666 =head1 NAME nbd_aio_cache - send cache (prefetch) command to the NBD server =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_cache ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Issue the cache (prefetch) command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_cache can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_CACHE 1 =head1 SEE ALSO L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_zero.pod0000444000175000017500000000553014603303744012603 =head1 NAME nbd_aio_zero - send write zeroes command to the NBD server =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_zero ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Issue a write zeroes command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_zero can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_ZERO 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_block_status.pod0000444000175000017500000000736414603303744014330 =head1 NAME nbd_aio_block_status - send block status command, with 32-bit callback =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error); void *user_data; void (*free) (void *user_data); } nbd_extent_callback; typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_block_status ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Send the block status command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L. This function is inherently limited to 32-bit values. If the server replies with a larger extent, the length of that extent will be truncated to just below 32 bits and any further extents from the server will be ignored. If the server replies with a status value larger than 32 bits (only possible when extended headers are in use), the callback function will be passed an C error. To get the full extent information from a server that supports 64-bit extents, you must use L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_block_status can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_block_status_64.pod0000444000175000017500000000640314603303744014632 =head1 NAME nbd_aio_block_status_64 - send block status command, with 64-bit callback =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error); void *user_data; void (*free) (void *user_data); } nbd_extent64_callback; typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_block_status_64 ( struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Send the block status command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_block_status_64 can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS_64 1 =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_block_status_filter.pod0000444000175000017500000000655414603303744015675 =head1 NAME nbd_aio_block_status_filter - send filtered block status command to the NBD server =head1 SYNOPSIS #include typedef struct { int (*callback) (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error); void *user_data; void (*free) (void *user_data); } nbd_extent64_callback; typedef struct { int (*callback) (void *user_data, int *error); void *user_data; void (*free) (void *user_data); } nbd_completion_callback; int64_t nbd_aio_block_status_filter ( struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags ); =head1 DESCRIPTION Send a filtered block status command to the NBD server. To check if the command completed, call L. Or supply the optional C which will be invoked as described in L. Other parameters behave as documented in L. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The L function can be used to alter which scenarios should await a server reply rather than failing fast. =head1 RETURN VALUE This call returns the 64 bit cookie of the command. The cookie is E C<1>. Cookies are unique (per libnbd handle, not globally). =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C, C. For more information see L. =head1 HANDLE STATE nbd_aio_block_status_filter can be called when the handle is in the following state: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ❌ error │ │ Handle dead │ ❌ error │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.18. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS_FILTER 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_get_fd.pod0000444000175000017500000000232214603303744013050 =head1 NAME nbd_aio_get_fd - return file descriptor associated with this connection =head1 SYNOPSIS #include int nbd_aio_get_fd ( struct nbd_handle *h ); =head1 DESCRIPTION Return the underlying file descriptor associated with this connection. You can use this to check if the file descriptor is ready for reading or writing and call L or L. See also L. Do not do anything else with the file descriptor. =head1 RETURN VALUE This call returns a file descriptor. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_GET_FD 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_get_direction.pod0000444000175000017500000000571214603303744014445 =head1 NAME nbd_aio_get_direction - return the read or write direction =head1 SYNOPSIS #include unsigned nbd_aio_get_direction ( struct nbd_handle *h ); =head1 DESCRIPTION Return the current direction of this connection, which means whether we are next expecting to read data from the server, write data to the server, or both. It returns =over 4 =item 0 We are not expected to interact with the server file descriptor from the current state. It is not worth attempting to use L; if the connection is not dead, then state machine progress must instead come from some other means such as L. =item C = 1 We are expected next to read from the server. If using L you would set C. If C returns C or C you would then call L. Note that once libnbd reaches L, this direction is returned even when there are no commands in flight (see L). In a single-threaded use of libnbd, it is not worth polling until after issuing a command, as otherwise the server will never wake up the poll. In a multi-threaded scenario, you can have one thread begin a polling loop prior to any commands, but any other thread that issues a command will need a way to kick the polling thread out of poll in case issuing the command changes the needed polling direction. Possible ways to do this include polling for activity on a pipe-to-self, or using L to send a signal that is masked except during L. =item C = 2 We are expected next to write to the server. If using L you would set C. If C returns C you would then call L. =item C = 3 We are expected next to either read or write to the server. If using L you would set C. If only one of C or C is returned, then see above. However, if both are returned, it is better to call only L, as processing the server's reply may change the state of the connection and invalidate the need to write more commands. =back =head1 RETURN VALUE This call returns a bitmask. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_GET_DIRECTION 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_notify_read.pod0000444000175000017500000000204314603303744014123 =head1 NAME nbd_aio_notify_read - notify that the connection is readable =head1 SYNOPSIS #include int nbd_aio_notify_read ( struct nbd_handle *h ); =head1 DESCRIPTION Send notification to the state machine that the connection is readable. Typically this is called after your main loop has detected that the file descriptor associated with this connection is readable. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_NOTIFY_READ 1 =head1 SEE ALSO L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_notify_write.pod0000444000175000017500000000204614603303744014345 =head1 NAME nbd_aio_notify_write - notify that the connection is writable =head1 SYNOPSIS #include int nbd_aio_notify_write ( struct nbd_handle *h ); =head1 DESCRIPTION Send notification to the state machine that the connection is writable. Typically this is called after your main loop has detected that the file descriptor associated with this connection is writable. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_NOTIFY_WRITE 1 =head1 SEE ALSO L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_is_created.pod0000444000175000017500000000176714603303744013736 =head1 NAME nbd_aio_is_created - check if the connection has just been created =head1 SYNOPSIS #include int nbd_aio_is_created ( struct nbd_handle *h ); =head1 DESCRIPTION Return true if this connection has just been created. This is the state before the handle has started connecting to a server. In this state the handle can start to be connected by calling functions such as L. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_IS_CREATED 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_is_connecting.pod0000444000175000017500000000176314603303744014452 =head1 NAME nbd_aio_is_connecting - check if the connection is connecting or handshaking =head1 SYNOPSIS #include int nbd_aio_is_connecting ( struct nbd_handle *h ); =head1 DESCRIPTION Return true if this connection is connecting to the server or in the process of handshaking and negotiating options which happens before the handle becomes ready to issue commands (see L). =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_IS_CONNECTING 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_is_negotiating.pod0000444000175000017500000000236614603303744014633 =head1 NAME nbd_aio_is_negotiating - check if connection is ready to send handshake option =head1 SYNOPSIS #include int nbd_aio_is_negotiating ( struct nbd_handle *h ); =head1 DESCRIPTION Return true if this connection is ready to start another option negotiation command while handshaking with the server. An option command will move back to the connecting state (see L). Note that this state cannot be reached unless requested by L, and even then it only works with newstyle servers; an oldstyle server will skip straight to L. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.4. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_IS_NEGOTIATING 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_is_ready.pod0000444000175000017500000000167014603303744013424 =head1 NAME nbd_aio_is_ready - check if the connection is in the ready state =head1 SYNOPSIS #include int nbd_aio_is_ready ( struct nbd_handle *h ); =head1 DESCRIPTION Return true if this connection is connected to the NBD server, the handshake has completed, and the connection is idle or waiting for a reply. In this state the handle is ready to issue commands. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_IS_READY 1 =head1 SEE ALSO L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_is_processing.pod0000444000175000017500000000221414603303744014467 =head1 NAME nbd_aio_is_processing - check if the connection is processing a command =head1 SYNOPSIS #include int nbd_aio_is_processing ( struct nbd_handle *h ); =head1 DESCRIPTION Return true if this connection is connected to the NBD server, the handshake has completed, and the connection is processing commands (either writing out a request or reading a reply). Note the ready state (L) is not included. In the ready state commands may be I (the I is processing them), but libnbd is not processing them. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_IS_PROCESSING 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_is_dead.pod0000444000175000017500000000162214603303744013212 =head1 NAME nbd_aio_is_dead - check if the connection is dead =head1 SYNOPSIS #include int nbd_aio_is_dead ( struct nbd_handle *h ); =head1 DESCRIPTION Return true if the connection has encountered a fatal error and is dead. In this state the handle may only be closed. There is no way to recover a handle from the dead state. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_IS_DEAD 1 =head1 SEE ALSO L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_is_closed.pod0000444000175000017500000000156114603303744013570 =head1 NAME nbd_aio_is_closed - check if the connection is closed =head1 SYNOPSIS #include int nbd_aio_is_closed ( struct nbd_handle *h ); =head1 DESCRIPTION Return true if the connection has closed. There is no way to reconnect a closed connection. Instead you must close the whole handle. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_IS_CLOSED 1 =head1 SEE ALSO L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_command_completed.pod0000444000175000017500000000256514603303744015303 =head1 NAME nbd_aio_command_completed - check if the command completed =head1 SYNOPSIS #include int nbd_aio_command_completed ( struct nbd_handle *h, uint64_t cookie ); =head1 DESCRIPTION Return true if the command completed. If this function returns true then the command was successful and it has been retired. Return false if the command is still in flight. This can also fail with an error in case the command failed (in this case the command is also retired). A command is retired either via this command, or by using a completion callback which returns C<1>. The C parameter is the positive unique 64 bit cookie for the command, as returned by a call such as L. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_COMMAND_COMPLETED 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_peek_command_completed.pod0000444000175000017500000000247014603303744016302 =head1 NAME nbd_aio_peek_command_completed - check if any command has completed =head1 SYNOPSIS #include int64_t nbd_aio_peek_command_completed ( struct nbd_handle *h ); =head1 DESCRIPTION Return the unique positive 64 bit cookie of the first non-retired but completed command, C<0> if there are in-flight commands but none of them are awaiting retirement, or C<-1> on error including when there are no in-flight commands. Any cookie returned by this function must still be passed to L to actually retire the command and learn whether the command was successful. =head1 RETURN VALUE This call returns a 64 bit signed integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_PEEK_COMMAND_COMPLETED 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_aio_in_flight.pod0000444000175000017500000001334514603303744013572 =head1 NAME nbd_aio_in_flight - check how many aio commands are still in flight =head1 SYNOPSIS #include int nbd_aio_in_flight ( struct nbd_handle *h ); =head1 DESCRIPTION Return the number of in-flight aio commands that are still awaiting a response from the server before they can be retired. If this returns a non-zero value when requesting a disconnect from the server (see L and L), libnbd does not try to wait for those commands to complete gracefully; if the server strands commands while shutting down, L will report those commands as failed with a status of C. =head1 RETURN VALUE This call returns an integer E C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_aio_in_flight can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ❌ error │ │ Connecting & handshaking (opt_mode) │ ❌ error │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ✅ allowed │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_AIO_IN_FLIGHT 1 =head1 EXAMPLE This example is also available as F in the libnbd source code. /* This example shows how to use the AIO (asynchronous) low * level API to connect to a server and read the disk. * * Here are a few ways to try this example: * * nbdkit -U - linuxdisk . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - floppy . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - pattern size=1M \ * --run './aio-connect-read $unixsocket' */ #include #include #include #include #include #include #include #define NR_SECTORS 32 #define SECTOR_SIZE 512 struct data { uint64_t offset; char sector[SECTOR_SIZE]; }; static int hexdump (void *user_data, int *error) { struct data *data = user_data; FILE *pp; if (*error) { errno = *error; perror ("failed to read"); exit (EXIT_FAILURE); } printf ("sector at offset 0x%" PRIx64 ":\n", data->offset); pp = popen ("hexdump -C", "w"); if (pp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (data->sector, SECTOR_SIZE, 1, pp); pclose (pp); printf ("\n"); /* Returning 1 from the callback automatically retires * the command. */ return 1; } static struct data data[NR_SECTORS]; int main (int argc, char *argv[]) { struct nbd_handle *nbd; size_t i; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a Unix domain socket. * This only starts the connection. */ if (nbd_aio_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Wait for the connection to complete. The use of * nbd_poll here is only as an example. You could also * integrate this with poll(2), glib or another main * loop. Read libnbd(3) and the source file lib/poll.c. */ while (!nbd_aio_is_ready (nbd)) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } assert (nbd_get_size (nbd) >= NR_SECTORS * SECTOR_SIZE); /* Issue read commands for the first NR sectors. */ for (i = 0; i < NR_SECTORS; ++i) { data[i].offset = i * SECTOR_SIZE; /* The callback (hexdump) is called when the command * completes. The buffer must continue to exist while * the command is running. */ if (nbd_aio_pread (nbd, data[i].sector, SECTOR_SIZE, data[i].offset, (nbd_completion_callback) { .callback = hexdump, .user_data = &data[i], }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Run the main loop until all the commands have * completed and retired. Again the use of nbd_poll * here is only as an example. */ while (nbd_aio_in_flight (nbd) > 0) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_connection_state.pod0000444000175000017500000000231614603303744014332 =head1 NAME nbd_connection_state - return string describing the state of the connection =head1 SYNOPSIS #include const char * nbd_connection_state ( struct nbd_handle *h ); =head1 DESCRIPTION Returns a descriptive string for the state of the connection. This can be used for debugging or troubleshooting, but you should not rely on the state of connections since it may change in future versions. =head1 RETURN VALUE This call returns a statically allocated string, valid for the lifetime of the process or until libnbd is unloaded by L. You B try to free the string. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_CONNECTION_STATE 1 =head1 SEE ALSO L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_package_name.pod0000444000175000017500000000204414603303744014223 =head1 NAME nbd_get_package_name - return the name of the library =head1 SYNOPSIS #include const char * nbd_get_package_name ( struct nbd_handle *h ); =head1 DESCRIPTION Returns the name of the library, always C<"libnbd"> unless the library was modified with another name at compile time. =head1 RETURN VALUE This call returns a statically allocated string, valid for the lifetime of the process or until libnbd is unloaded by L. You B try to free the string. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_PACKAGE_NAME 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_version.pod0000444000175000017500000000355514603303744013325 =head1 NAME nbd_get_version - return the version of the library =head1 SYNOPSIS #include const char * nbd_get_version ( struct nbd_handle *h ); =head1 DESCRIPTION Return the version of libnbd. This is returned as a string in the form C<"major.minor.release"> where each of major, minor and release is a small positive integer. For example: minor ↓ "1.0.3" ↑ ↑ major release =over 4 =item major = 0 The major number was C<0> for the early experimental versions of libnbd where we still had an unstable API. =item major = 1 The major number is C<1> for the versions of libnbd with a long-term stable API and ABI. It is not anticipated that major will be any number other than C<1>. =item minor = 0, 2, ... (even) The minor number is even for stable releases. =item minor = 1, 3, ... (odd) The minor number is odd for development versions. Note that new APIs added in a development version remain experimental and subject to change in that branch until they appear in a stable release. =item release The release number is incremented for each release along a particular branch. =back =head1 RETURN VALUE This call returns a statically allocated string, valid for the lifetime of the process or until libnbd is unloaded by L. You B try to free the string. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_VERSION 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_kill_subprocess.pod0000444000175000017500000000237014603303744014176 =head1 NAME nbd_kill_subprocess - kill server running as a subprocess =head1 SYNOPSIS #include int nbd_kill_subprocess ( struct nbd_handle *h, int signum ); =head1 DESCRIPTION This call may be used to kill the server running as a subprocess that was previously created using L. You do not need to use this call. It is only needed if the server does not exit when the socket is closed. The C parameter is the optional signal number to send (see L). If C is C<0> then C is sent. =head1 RETURN VALUE If the call is successful the function returns C<0>. =head1 ERRORS On error C<-1> is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_KILL_SUBPROCESS 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_supports_tls.pod0000444000175000017500000000156714603303744013563 =head1 NAME nbd_supports_tls - true if libnbd was compiled with support for TLS =head1 SYNOPSIS #include int nbd_supports_tls ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if libnbd was compiled with gnutls which is required to support TLS encryption, or false if not. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SUPPORTS_TLS 1 =head1 SEE ALSO L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_supports_vsock.pod0000444000175000017500000000227414603303744014102 =head1 NAME nbd_supports_vsock - true if libnbd was compiled with support for AF_VSOCK =head1 SYNOPSIS #include int nbd_supports_vsock ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if libnbd was compiled with support for the C family of sockets, or false if not. Note that on the Linux operating system, this returns true if there is compile-time support, but you may still need runtime support for some aspects of AF_VSOCK usage; for example, use of C as the server name requires that the I kernel module is loaded. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.16. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SUPPORTS_VSOCK 1 =head1 SEE ALSO L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_supports_uri.pod0000444000175000017500000000165114603303744013552 =head1 NAME nbd_supports_uri - true if libnbd was compiled with support for NBD URIs =head1 SYNOPSIS #include int nbd_supports_uri ( struct nbd_handle *h ); =head1 DESCRIPTION Returns true if libnbd was compiled with libxml2 which is required to support NBD URIs, or false if not. =head1 RETURN VALUE This call returns a boolean value. =head1 ERRORS This function does not fail. The following parameters must not be NULL: C. For more information see L. =head1 VERSION This function first appeared in libnbd 1.0. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_SUPPORTS_URI 1 =head1 SEE ALSO L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_get_uri.pod0000444000175000017500000000501014603303744012423 =head1 NAME nbd_get_uri - construct an NBD URI for a connection =head1 SYNOPSIS #include char * nbd_get_uri ( struct nbd_handle *h ); =head1 DESCRIPTION This makes a best effort attempt to construct an NBD URI which could be used to connect back to the same server (using L). In some cases there is not enough information in the handle to successfully create a URI (eg. if you connected with L). In such cases the call returns C and further diagnostic information is available via L and L as usual. Even if a URI is returned it is not guaranteed to work, and it may not be optimal. L I<--uri> option is a way to access this API from shell scripts. =head1 RETURN VALUE This call returns a string. The caller must free the returned string to avoid a memory leak. =head1 ERRORS On error C is returned. Refer to L for how to get further details of the error. The following parameters must not be NULL: C. For more information see L. =head1 HANDLE STATE nbd_get_uri can be called when the handle is in the following states: ┌─────────────────────────────────────┬─────────────────────────┐ │ Handle created, before connecting │ ❌ error │ │ Connecting │ ✅ allowed │ │ Connecting & handshaking (opt_mode) │ ✅ allowed │ │ Connected to the server │ ✅ allowed │ │ Connection shut down │ ✅ allowed │ │ Handle dead │ ✅ allowed │ └─────────────────────────────────────┴─────────────────────────┘ =head1 VERSION This function first appeared in libnbd 1.8. If you need to test if this function is available at compile time check if the following macro is defined: #define LIBNBD_HAVE_NBD_GET_URI 1 =head1 SEE ALSO L, L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd.pod0000644000175000017500000011723014675532302011411 =head1 NAME libnbd - network block device (NBD) client library in userspace =head1 SYNOPSIS #include struct nbd_handle *nbd; char buf[512]; if ((nbd = nbd_create ()) == NULL || nbd_connect_tcp (nbd, "server.example.com", "nbd") == -1 || nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } nbd_close (nbd); =for paragraph cc prog.c -o prog -lnbd or: cc prog.c -o prog `pkg-config libnbd --cflags --libs` =head1 DESCRIPTION Network Block Device (NBD) is a network protocol for accessing block devices over the network. Block devices are hard disks and things that behave like hard disks such as disk images and virtual machines. Libnbd is a client library for the NBD protocol which can access most of the features of NBD while being simple to use and powerful. This manual page gives an overview of libnbd, using C as an example, but the library is available from other programming languages. =over 4 =item L, L, etc. Each manual page covers one function from the C API in detail. There is a full list in section L below. =item L Using the API from OCaml. =item L Using the API from Go. =item L Using the API from Rust. =item L Using the NBD shell (nbdsh) for command line and Python scripting. =back =head1 HANDLES To use the API at all you must first open a handle by calling L (or its equivalent in other languages): struct nbd_handle *nbd; nbd = nbd_create (); This creates and returns a handle, which is associated with one connection to an NBD server, initially not connected. Each handle is a complex state machine which can be in states such as created, connected to a remote server, handshaking, idle and ready to issue commands, or busy sending or receiving commands. Handles have a name used in debugging messages. The name is normally generated (C, C etc) but you can set a friendly name with L. Also there is a private field in the handle for use by the application, see L. When you have finished with the handle you must call L which closes the underlying socket (if necessary) and frees up all associated resources. =head1 SYNCHRONOUS VS ASYNCHRONOUS API There are two levels of API available. A simple high level synchronous API lets you give the handle high level instructions like “connect to the server”, “read a block”, “write a block”, etc. Each of these functions will run to completion, blocking the current thread before returning. A more complicated low level non-blocking asynchronous API is also available where you can integrate with L or another main loop. You can freely mix the two APIs on the same handle. You can also call APIs on a single handle from multiple threads. Single API calls on the handle are atomic — they either take a lock on the handle while they run or are careful to access handle fields atomically. Libnbd does B create its own threads. =head1 USING THE SYNCHRONOUS (“HIGH LEVEL”) API This is the simplest way to use the API, with the possible drawback that each libnbd function blocks until it is finished. Create a handle and connect to the server: struct nbd_handle *nbd; nbd = nbd_create (); if (!nbd) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } if (nbd_connect_tcp (nbd, "server.example.com", "nbd") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } Read the first sector (512 bytes) from the NBD export: char buf[512]; if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } Close the handle: nbd_close (nbd); You can call the high level API from multiple threads, but each libnbd API call takes a lock on the handle and so commands will not run in parallel. =head1 USING THE ASYNCHRONOUS (“LOW LEVEL”) API The low level API is useful if you want to use libnbd in non-blocking code; or if you want to issue commands in parallel from multiple threads; or if you need more control especially over having multiple commands in-flight on a single connection. To use the low level API you will need to integrate with L or another “main loop” such as the GLib main event loop. =head2 Issuing asynchronous commands Use the C variants to issue commands asynchronously (without waiting for the command to complete before returning). For example the asynchronous variant of L is: int64_t cookie; cookie = nbd_aio_pread (nbd, buf, sizeof buf, NBD_NULL_COMPLETION, 0); if (cookie == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } There are several things to note here: =over 4 =item * This only starts the command. The command is (usually) still in flight when the call returns success, where you must rely on subsequent API calls for learning the final command outcome and trigger any remaining callbacks. However, you must also be able to handle the case where system load allows the state machine to advance far enough to invoke callbacks before the asynchronous API returns. =item * A buffer (C) has been assigned to collect the result of the read, but it is not guaranteed to be filled with data until the command has completed (see examples below). The buffer must not be freed until the command has finished running. =item * You can issue multiple commands on the same handle at the same time. =item * A cookie is returned which identifies this command in subsequent calls. The cookie is unique (per libnbd handle) and E 1. =item * You may register a function which is called when the command completes, see L below. In this case we have specified a null completion callback. If a completion callback is specified, it will only be called if the asynchronous command was successfully submitted (if the asynchronous API itself returns an error, there is nothing further to be completed). =back =head2 Socket and direction Each libnbd handle has an associated socket (once it has started connecting). You can read the file descriptor of the socket using: int fd = nbd_aio_get_fd (nbd); The socket is non-blocking. Between calls into libnbd it is in the "would block" condition. You can find out if libnbd is expecting to read or write from the socket next by calling: int dir = nbd_aio_get_direction (nbd); which returns one of C, C or C (= C). And so to set up the next call to L or other main loop you must translate this to C, C or C (or whatever mechanism your main loop uses). =head2 Notifying libnbd when an event happens When you detect (eg. using L) that a read or write event has happened on the socket, you must then tell libnbd about it. You have to check the direction I (since it may have been changed by another thread), and notify libnbd: int r = 0; dir = nbd_aio_get_direction (nbd); if ((dir & LIBNBD_AIO_DIRECTION_READ) && a_read_event_occurred ()) r = nbd_aio_notify_read (nbd); else if ((dir & LIBNBD_AIO_DIRECTION_WRITE) && a_write_event_occurred ()) r = nbd_aio_notify_write (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); // ... } The notify calls move the state machine along, reading and writing from the socket possibly multiple times, until the socket would block again, at which point they return control to the caller. =head2 Simple implementation with L In fact if you want to use L on a single handle, a simple implementation has already been written called L. It is also useful to examine how this is implemented (F in the libnbd source code) because that will tell you how to integrate libnbd with more complex main loops. Some examples of using L follow. As with the high level API, it all starts by creating a handle: struct nbd_handle *nbd; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } To connect to the server asynchronously, we start the connection using L and then enter our main loop to check for events until the connection becomes ready: int fd; struct sockaddr_un addr; socklen_t len; /* some code to set up addr, then ... */ if (nbd_aio_connect (nbd, &addr, len) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } while (! nbd_aio_is_ready (nbd)) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } } To read data asynchronously, start an asynchronous read command, which returns a 64 bit command cookie, and enter the main loop until the command has completed: int64_t cookie; char buf[512]; cookie = nbd_aio_pread (nbd, buf, sizeof buf, offset, NBD_NULL_COMPLETION, 0); if (cookie == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } while (! nbd_aio_command_completed (nbd, cookie)) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } } For almost all high level synchronous calls (eg. L) there is a low level asynchronous equivalent (eg. L) for starting a command. =head2 glib2 integration See L =head2 libev integration See L =head1 ERROR HANDLING When any API call returns an error (C<-1> or C depending on the API), an error message and sometimes an errno value are available. You can retrieve the error message and/or errno of the most recently failed call using L and L. For example: if (nbd_connect_tcp (nbd, "remote", "nbd") == -1) { fprintf (stderr, "failed to connect to remote server: %s (errno = %d)\n", nbd_get_error (), nbd_get_errno ()); } These functions use thread-local storage to return the most recent error in the current thread. This is why you don't need to pass the handle to these calls. They even work if L returns C when there is no handle at all. For this reason you cannot call them from a different thread. You should call them immediately after the failed API call, from the same thread. Furthermore the error string returned by L is only valid until the next libnbd API call in the current thread, so if you need to keep the string you must copy it (eg. using L). =head2 Errno For some errors, a system call error number (see L) is available. You can find the error number by calling L. It works the same way as L with respect to threads. Even when a call returns an error, L might return C<0>. This does I mean there was no error. It means no additional errno information is available for this error. The error number is often the raw error returned by a system call that failed. It can also be used to indicate special conditions. The most common cases are: =over 4 =item C Invalid parameters or state for the current libnbd call. (This can also indicate that requests are not aligned to L). =item C The libnbd call is not available in this build of libnbd (eg. when using a TLS API if the library was compiled without TLS support). =item C The library ran out of memory while performing some operation. =item C A request is too large, for example if you try to read too many bytes in a single L call. =item C A pointer parameter was C when it should be non-NULL. See the section below. =back =head2 Non-NULL parameters Almost all libnbd functions when called from C take one or more pointer parameters that must not be C. For example, the handle parameter, strings and buffers should usually not be C. If a C is passed as one of these parameters, libnbd attempts to return an error with L returning C. However it may cause other compiler-related warnings and even undefined behaviour, so you should try to avoid this programming mistake. =head1 DEBUGGING MESSAGES Libnbd can print lots of debugging messages, useful if you have a problem with the library. Either enable debugging after creating the handle: nbd = nbd_create (); nbd_set_debug (nbd, true); or set the C environment variable which will enable debugging by default on all new handles. Debugging messages are sent to stderr by default, but you can redirect them to a logging system using L. =head1 CONNECTING TO LOCAL OR REMOTE NBD SERVERS There are several ways to connect to NBD servers, and you can even run a server from libnbd. Normally you would connect to a server which is already running, over a local Unix domain socket or a remote TCP connection. The high level API calls are: nbd_connect_unix (nbd, "socket"); nbd_connect_tcp (nbd, "localhost", "nbd"); For L the third parameter is the port name or number, which can either be a name from F or the port number as a string (eg. C<"10809">). =head2 Connecting to an NBD URI libnbd supports the L. The format of URIs is documented in L. You can connect to a URI as in these examples (using the high level API): nbd_connect_uri (nbd, "nbd://example.com/"); =for paragraph nbd_connect_uri (nbd, "nbds+unix:///export?socket=/tmp/nbd.sock"); This feature is implemented by calling other libnbd APIs to set up the export name, TLS parameters, and finally connect over a Unix domain socket or TCP. URI support is an optional feature of the library, requiring libxml2 at compile time. The L and L calls will raise an error (with L returning C) if it was not built with this feature, and you can also test for it explicitly using L. =head2 Connecting to a subprocess Some NBD servers — notably L with the I<-s> parameter, and L with the port parameter set to 0 — can also accept a single NBD connection on stdin/stdout. You can run these servers as a subprocess of your main program using L. This example creates a 1G writable RAM disk: char *argv[] = { "nbdkit", "-s", "--exit-with-parent", "memory", "1G", NULL }; nbd_connect_command (nbd, argv); When the handle is closed the nbdkit subprocess is killed, which in this case means the RAM disk is discarded, so this is useful for testing. =head2 Connecting to a subprocess using systemd socket activation Some NBD servers — notably L and L — support systemd socket activation allowing libnbd to pass a socket to the subprocess. This works very similarly to L described above, but you must use L instead. =head2 Connecting to any socket If none of the other nbd_connect* methods are suitable you can create a connected socket yourself and pass it to L. One use for this is in fuzzing where we use L to create the socket, then fork, then have the test harness in the child process connected to libnbd over the socket pair (see: L). Another use is to connect libnbd to an address family that it does not support natively, such as XDP or IB. =head1 CONTROLLING NEGOTIATION By default, when beginning a connection, libnbd will handle all negotiation with the server, using only the configuration (eg. L or L) that was requested before the connection attempt; this phase continues until L no longer returns true, at which point, either data commands are ready to use or else the connection has failed with an error. But there are scenarios in which it is useful to also control the handshaking commands sent during negotiation, such as asking the server for a list of available exports prior to selecting which one to use. This is done by calling L before connecting; then after requesting a connection, the state machine will pause at L at any point that the user can decide which handshake command to send next. Note that the negotiation state is only reachable from newstyle servers; oldstyle servers cannot negotiate and will progress all the way to the ready state. When the negotiating state is reached, you can initiate option commands such as L or their asynchronous equivalents, as well as alter configuration such as export name that previously had to be set before connection. Since the NBD protocol does not allow parallel negotiating commands, no cookie is involved, and you can track completion of each command when the state is no longer L. If L fails but the connection is still live, you will be back in negotiation state, where you can request a different export name and try again. Exiting the negotiation state is only possible with a successful L which moves to the data phase, or L which performs a clean shutdown of the connection by skipping the data phase. =head1 EXPORTS AND FLAGS It is possible for NBD servers to serve different content on different “exports”. For this you must pass the right export name to the server. Call this API before connecting: nbd_set_export_name (nbd, "export"); Note that there are some servers (like L E 1.14) which ignore this, and other servers (like L) which require it to be set correctly but cannot serve different content. These APIs are also available after a successful L during the negotiation phase, if you used L prior to connecting. =head2 Flag calls After connecting the server will send back a set of flags describing the export, such as whether it is writable and if it can support flush to permanent storage. These flags can be accessed from libnbd using APIs such as: int is_read_only = nbd_is_read_only (nbd); int can_flush = nbd_can_flush (nbd); Flag calls are: __API_FLAG_LINKS__ =head2 Size of the export To get the size of the export in bytes, use L: int64_t size = nbd_get_size (nbd); =head2 Block size constraints Some NBD servers cannot handle requests at any byte boundary. They might, for example, require all requests to be aligned to 512 byte sectors. Also some servers advertise a preferred block size. This is not a requirement, but is the minimum block size that can be accessed efficiently (usually without triggering expensive read-modify-write cycles inside the server). These are referred to as block size constraints and can be queried by calling L. Pay attention in particular to the C constraint as some servers will fail requests which are smaller or not aligned to this block size with C ("Invalid argument") errors. For information on the server side, see L. For definitive information about block size constraints, read L. =head2 Newstyle and oldstyle servers Libnbd can connect to both the simpler, old NBD protocol (before 2011) referred to now as C<"oldstyle">, or modern C<"newstyle-fixed"> servers. ("newstyle" was only briefly available.) To find out the protocol used by the server, call L. =head1 DATA COMMANDS You can read and write data from the NBD server using L and L or their asynchronous equivalents. All data commands support a C argument (mandatory in C, but optional in languages where it can default to 0). For convenience, the constant C is defined with the set of flags currently recognized by libnbd, where future NBD protocol extensions may result in additional flags being supported; but in general, specific data commands only accept a subset of known flags. Libnbd defaults to performing some client-side sanity checking in each of its data commands; for example, attempts to write to a server that has advertised a read-only connection are rejected. It is possible to override aspects of this checking by using L. Some servers also support: =over 4 =item trim/discard If L returns true, L can be used to “punch holes” in the backing storage of the disk on the server. Normally (although not in every case) the holes read back as zeroes but take up no space. =item zeroing If L returns true, L can be used to efficiently zero parts of the disk without having to send large amounts of zero bytes over the network (as would be necessary if using L). This is slightly different from trimming because the backing storage is still allocated. For some storage types this can make future writes more efficient and/or less likely to fail because of out of space errors. =item flushing Some servers can commit data to permanent storage and tell you that this has happened reliably. There are two export flags associated with this: L and L. The L call (available if L returns true) flushes all pending writes to disk and does not complete until that operation has finished. It is similar to using L on POSIX systems. A more efficient way to achieve this is to set the flag C on write-like calls (like write, trim and zero). This flag means the call will not complete until committed to permanent storage, but it does not involve flushing the entire disk. =item prefetching Some servers can prefetch data, making subsequent reads faster. The L call (available if L returns true) is used to prefetch. =item block status Some servers are able to provide information about the various extents within the image, via the notion of one or more meta contexts. The most common meta context is "base:allocation" (available in libnbd.h as C), which can be used to learn which portions of a file are allocated or read as zero. Other contexts may be available; for example, L can expose a meta context "qemu:dirty-bitmap:NAME" for tracking which portions of a file are tracked by a qcow2 dirty bitmap. In order to utilize block status, the client must call L prior to connecting, for each meta context in which it is interested, then check L after connection to see which contexts the server actually supports. If a context is supported, the client can then use L with a callback function that will receive an array of structs describing consecutive extents within a context. Each struct gives the length of the extent, then a bitmask description of that extent (for the "base:allocation" context, the bitmask may include C for unallocated portions of the file, and/or C for portions of the file known to read as zero). There is a full example of requesting meta context and using block status available at L =back =head1 PERFORMANCE =head2 Issuing multiple in-flight requests NBD servers which properly implement the specification can handle multiple data requests in flight over the same connection at the same time. Libnbd supports this when using the low level API. To use it you simply issue more requests as needed (eg. using calls like L, L) without waiting for previous commands to complete. You need to be careful that requests in flight do not overlap with disk offsets of other write-like commands in flight — an overlapping read may see indeterminate data, and an overlapping write may even cause disk corruption where the resulting disk contents do not match either of the two writes. Each request is identified by a unique 64 bit cookie (assigned by libnbd), allowing libnbd and callers to match replies to requests. Replies may arrive out of order. A request that is rejected client-side for failing a sanity check (such as attempting to write to a read-only server, see L) will fail rather than returning a cookie, although closure cleanup is still performed. Although in theory you can have an indefinite number of requests in flight at the same time, in practice it's a good idea to limit them to some number. Libnbd will queue commands in the handle even if it cannot write them to the server, so this limit is largely to prevent a backlog of commands from consuming too much memory. It is suggested to start with a limit of 64 requests in flight (per NBD connection), and measure how adjusting the limit up and down affects performance for your local configuration. There is a full example using multiple in-flight requests available at L =head2 Multi-conn Some NBD servers advertise “multi-conn” which means that it is safe to make multiple connections to the server and load-balance commands across all of the connections. To do this you should open a single connection first and test for this feature using L. Without error handling it would look like this: struct nbd_handle *nbd[4]; size_t i; bool supports_multi_conn; nbd[0] = nbd_create (); nbd_connect_tcp (nbd[0], "server", "10809"); supports_multi_conn = nbd_can_multi_conn (nbd[0]) > 0; If multi-conn is supported then you can open further connections: if (supports_multi_conn) { for (i = 1; i <= 3; ++i) { nbd[i] = nbd_create (); nbd_connect_tcp (nbd[i], "server", "10809"); } } If you are issuing multiple in-flight requests (see above) and limiting the number, then the limit should be applied to each individual NBD connection. =head1 ENCRYPTION AND AUTHENTICATION The NBD protocol and libnbd supports TLS (sometimes incorrectly called “SSL”) for encryption of the data stream and authentication of clients and servers. Libnbd defaults to TLS I for maximum interoperability. To enable it on a handle you must call L before connecting. To allow TLS, but fall back to unencrypted: nbd_set_tls (nbd, LIBNBD_TLS_ALLOW); Use L to find out if TLS negotiation was successful. Avoid C if man-in-the-middle attacks are a concern. The most secure mode is to require TLS and fail to connect if the server does not support it: nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE); It may also be necessary to verify that the server’s identity is correct. For some servers it may be necessary to verify to the server that the client is permitted to connect. This can be done using either X.509 certificates, or TLS Pre-Shared Keys (PSK). Certificates are more secure. PSK is far more convenient, but you must have an existing secure channel to distribute the keys. =head2 Setting up X.509 using system certificate authorities (CAs) This is the default if you don’t call any other C functions. In this case the server must have a public (eg. HTTPS) certificate which can be verified against the CAs registered on your system (eg. under F). To disable server name verification — which opens you up to a potential Man-In-The-Middle (MITM) attack — use: nbd_set_tls_verify_peer (nbd, false); =head2 Setting up an X.509 certificate authority (CA) You can set up your own CA and register clients and servers with it, issuing client and server certificates which will reliably authenticate your clients and servers to each other. Doing this is described in detail in the L manual. The only differences for libnbd are: =over 4 =item * Non-root certificates must be placed in C<$HOME/.pki/libnbd/> or C<$HOME/.config/pki/libnbd/> =item * Libnbd reads F and F (instead of F and F). =back Once you have set up the directory containing the certificates, call: nbd_set_tls_certificates (nbd, "/path/to/directory"); =head2 Setting up Pre-Shared Keys (PSK) TLS Pre-Shared Keys are a much more convenient method of setting up TLS, and more appropriate for NBD, but you should have an existing secure method available to distribute the keys. They are therefore ideal if you want to set up an NBD service as an adjunct to an existing secure REST API. Use L to create a file of C pairs: psktool -u username -p keys.psk and pass this path to libnbd: nbd_set_tls_psk_file (nbd, "keys.psk"); If necessary you may need to set the client username (otherwise libnbd will use your login name): nbd_set_tls_username (nbd, "username"); =head1 CALLBACKS Some libnbd calls take callbacks (eg. L, L). Libnbd can call these functions while processing. In the C API these libnbd calls take a structure which contains the function pointer and an optional opaque C pointer: nbd_aio_pread (nbd, buf, sizeof buf, offset, (nbd_completion_callback) { .callback = my_fn, .user_data = my_data }, 0); For optional callbacks, if you don't want the callback, either set C<.callback> to C or use the equivalent macros (such as C) defined in C: nbd_aio_pread (nbd, buf, sizeof buf, offset, NBD_NULL_COMPLETION, 0); From other languages the structure and opaque pointer are not needed because you can use closures to achieve the same effect. =head2 Callback lifetimes You can associate an optional free function with callbacks. Libnbd will call this function when the callback will not be called again by libnbd, including in the case where the API fails. This can be used to free associated C. For example: void *my_data = malloc (...); nbd_aio_pread_structured (nbd, buf, sizeof buf, offset, (nbd_chunk_callback) { .callback = my_fn, .user_data = my_data, .free = free }, NBD_NULL_COMPLETION, 0); will call L once on C after the point where it is known that the S> function can no longer be called, regardless of how many times C was actually called. If both a mid-command and completion callback are supplied, the functions will be reached in this order: mid-function callbacks, completion callback, mid-function free, and finally completion free. The free function is only accessible in the C API as it is not needed in garbage collected programming languages. =head2 Callbacks with C<.callback=NULL> and C<.free!=NULL> It is possible to register a callback like this: ... (nbd_completion_callback) { .callback = NULL, .user_data = my_data, .free = free }, ... The meaning of this is that the callback is never called, but the free function is still called after the last time the callback would have been called. This is useful for applying generic freeing actions when asynchronous commands are retired. =head2 Callbacks and locking The callbacks are invoked at a point where the libnbd lock is held, typically during a call to C, C, C, or other call that can advance libnbd's state machine. Depending on system load, it is even possible for a callback to be reached before completion of the C call that specified the callback. As such, it is unsafe for the callback to call any C APIs on the same nbd object, as it would cause deadlock. =head2 Completion callbacks All of the asychronous commands have an optional completion callback function that is used if the call to the asynchronous API reports success. The completion callback is invoked when the submitted command is eventually marked complete, after any mid-command callbacks have finished, and before any free functions. The completion callback is not reached if the asynchronous API itself fails, while free callbacks are reached regardless of the result of the initial asynchronous API. When the completion callback returns C<1>, the command is automatically retired (there is no need to call L); for any other return value, the command still needs to be manually retired (otherwise, the command will tie up resources until L is eventually reached). =head2 Callbacks with C parameter Some of the high-level commands (L, L) involve the use of a callback function invoked by the state machine at appropriate points in the server's reply before the overall command is complete. These callback functions, along with all of the completion callbacks, include a parameter C which is a pointer containing the value of any error detected so far. If a callback function fails and wants to change the resulting error of the overall command visible later in the API sequence, it should assign back into C and return C<-1> in the C API. Assignments into C are ignored for any other return value; similarly, assigning C<0> into C does not have an effect. In other language bindings, reporting callback errors is generally done by raising an exception rather than by return value. Note that a mid-command callback might never be reached, such as if libnbd detects that the command was invalid to send (see L) or if the server reports a failure that concludes the command. It is safe for a mid-command callback to ignore non-zero C: all the other parameters to the mid-command callback will still be valid (corresponding to the current portion of the server's reply), and the overall command will still fail (at the completion callback or L for an asynchronous command, or as the result of the overall synchronous command). Returing C<-1> from a mid-command callback does not prevent that callback from being reached again, if the server sends more mid-command replies that warrant another use of that callback. A mid-command callback may be reached more times than expected if the server is non-compliant. On the other hand, if a completion callback is supplied (only possible with asynchronous commands), it will not be called if the initial API call fails (such as attempting an asynchronous command in the wrong state - there is nothing to be completed since the command was not queued), but will otherwise be called exactly once, and the completion callback must not ignore the value pointed to by C. In particular, the content of a buffer passed to L or L is undefined if C<*error> is non-zero on entry to the completion callback. It is recommended that if you choose to use automatic command retirement (where the completion callback returns C<1> to avoid needing to call L later), your completion function should return C<1> on all control paths, even when handling errors (note that with automatic retirement, assigning into C is pointless as there is no later API to see that value). =head1 STATISTICS COUNTERS Libnbd tracks several statistics counters, useful for tracking how much traffic was sent over the connection. The counters track the number of plaintext bytes sent and received by the NBD protocol (not necessarily the number of bytes sent over the socket, particularly when TLS is enabled), as well as the number of protocol chunks (a group of bytes delineated by a magic number, and not the same as the number of TCP packets). printf ("bytes: sent=%" PRIu64 " received=%" PRIu64, nbd_stats_bytes_sent (nbd), nbd_stats_bytes_received (nbd)); printf ("chunks: sent=%" PRIu64 " received=%" PRIu64, nbd_stats_chunks_sent (nbd), nbd_stats_chunks_received (nbd)); =head1 SIGNALS Libnbd does not install signal handlers. It attempts to disable C when writing to the NBD socket using the C flag of L, or the C socket option, on platforms that support those. On some old Linux or newer non-Linux platforms the main program may wish to register a signal handler to ignore SIGPIPE: signal (SIGPIPE, SIG_IGN); =head1 COMPILING YOUR PROGRAM On most systems, C programs that use libnbd can be compiled like this: cc prog.c -o prog -lnbd To detect if the libnbd library and header file is installed, the preferred method is to use L or L: pkg-config libnbd --exists || fail libnbd is required In case the library or header file are not installed in the usual system locations, you can compile your program like this, using pkg-config to detect the proper location of libnbd: cc prog.c -o prog `pkg-config libnbd --cflags --libs` To compile an external project against a built copy of the libnbd source tree which hasn't been installed, see the F<./run> script. =head2 Autoconf projects External projects which use autoconf and need to check if libnbd is installed should use the C macro in F like this: PKG_CHECK_MODULES([LIBNBD], [libnbd]) This will define C<@LIBNBD_CFLAGS@> and C<@LIBNBD_LIBS@> which you will need to add to your F. =head2 CMake projects For CMake projects use: find_package(PkgConfig REQUIRED) pkg_check_modules(LIBNBD REQUIRED libnbd) target_link_libraries(prog ${LIBNBD_LIBRARIES}) target_include_directories(prog PUBLIC ${LIBNBD_INCLUDE_DIRS}) target_compile_options(prog PUBLIC ${LIBNBD_CFLAGS_OTHER}) =head2 Meson projects For meson projects use: nbd_dep = dependency('libnbd') executable('prog', 'prog.c', dependencies : [nbd_dep]) =head1 ENVIRONMENT VARIABLES =over 4 =item C Used in some situations to find TLS certificates. See L. =item C If this is set to the exact string C<1> when the handle is created then debugging is enabled. See L above. =item C The default TLS username. See L. =back =head1 SEE ALSO =head2 C API __API_LINKS__ =head2 Servers L, L, L. =head2 Encryption tools L, L, L. =head2 Standards L, L. =head2 Release notes L, L, L, L, L, L, L, L, L, L. =head2 Other L, L, L, L, L, L, L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.2.pod0000644000175000017500000001006714525371754014461 =head1 NAME libnbd-release-notes-1.2 - release notes for libnbd 1.2 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.2. This describes the major changes since 1.0. libnbd 1.2.0 was released on 14th November 2019. =head2 Security Two security problems were found during development of libnbd 1.2. Both were backported to the 1.0 stable branch. Upgrading is highly advisable. =head3 CVE-2019-14842 protocol downgrade attack when using C See the full announcement and links to mitigation, tests and fixes here: L =head3 remote code execution vulnerability See the full announcement here: L =head2 New APIs =over 4 =item L Test support by the server for fast zeroing (Eric Blake). =item L =item L Connect to a local connected socket which you create in your main program using your own chosen method. =item L =item L Connect to local processes that support systemd socket activation. =item L =item L Used to connect to servers over C. =item L =item L =item L =item L =item L Can be used when testing NBD servers to avoid various NBD features (Eric Blake). =item L Get the NBD protocol variant that the server supports. =item L Did we actually negotiate a TLS connection? =item L =item L =item L These can be used to filter NBD URIs before calling L. =back =head2 New features New tool L lets you create a loop-mounted file backed by an NBD server without needing root. C is now a supported protocol (thanks Stefan Hajnoczi and Stefano Garzarella). Support for the C flag (Eric Blake). Allow disabling certain protocol features, to make it easier to test servers (Eric Blake). Stack-allocated Variable Length Arrays (VLAs) are now banned throughout the library, making the library easier to consume from threads and other small stack situations. Reproducible builds (Chris Lamb). Support for filtering potentially dangerous or undesirable NBD URI features. =head2 Documentation Many improvements to the generated manual pages, including: =over 4 =item * Separate C and C sections for each API function. =item * Example code. =item * Relevant links can be added to the C section. =item * Link to NBD URI specification where relevant, and improve documentation around what URIs libnbd supports. =item * Document libnbd version number scheme. =item * Document limits on export name length, encoding etc. =back New L man page listing past security issues and remediations (Eric Blake). =head2 Tools L has a new I<--base-allocation> option which can be used to request C metadata context. New L I<--uri> (I<-u>) option to connect to URIs. =head2 Tests You can now fuzz libnbd using either American Fuzzy Lop or clang’s libFuzzer. Add unit tests for L (Eric Blake). Improved interop testing with various NBD servers and features. =head2 Other improvements and bug fixes L now tries to return the correct L from the underlying L call when that fails. The F header file is now shared between libnbd and nbdkit. Better fork-safety in C APIs. The code was analyzed with Coverity and various problems identified and fixed. =head1 SEE ALSO L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.4.pod0000644000175000017500000001030414525371754014455 =head1 NAME libnbd-release-notes-1.4 - release notes for libnbd 1.4 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.4. This describes the major changes since 1.2. libnbd 1.4.0 was released on 25 August 2020. =head2 Security There were no security issues found in this release. If you find a security issue, please read F in the source (online here: L). To find out about previous security issues in libnbd, see L. =head2 New APIs =over 4 =item L =item L =item L libnbd 1.4 adds a new “negotiating” state during NBD handshaking. For backwards compatibility programs must request this before starting the connection by calling L. You can find out if the connection is in this state by calling L. For an in-depth description of how this extra state can be used to negotiate server options, see L. =item L =item L During the negotiating state, abort the connection. =item L =item L During the negotiating state, complete the handshake. =item L =item L During the negotiating state, request full information about the server export. =item L =item L During the negotiating state, request the list of exports that the server provides. =item L Return the minimum, preferred or maximum block size constraints for requests sent to the server. =item L Return the canonical export name that the server defaults to. This information may only be available if you call L before connecting. =item L Return the optional text description of the current export. This information may only be available if you call L before connecting. =item L =item L Enable extended information about exports from the server. =back Thanks: Eric Blake for all of the new APIs. =head2 New features Bindings are now available in the Go programming language. FreeBSD and OpenBSD are now fully supported platforms. Bash tab completion is available for all of the command line tools. =head2 Documentation Verbatim text in man pages that wrapped over several lines is now typeset correctly. Links within the documentation have been enhanced, and are now checked for correctness. =head2 Tools New L tool lets you copy between an NBD server and a local file, or stream to and from an NBD server. New L tool lets you print extended information about an NBD server’s exports (Eric Blake). =head2 Tests Test sockets are created in F (instead of the local directory). This stops the test suite from failing if the local directory path is longer than the Unix domain socket maximum path length. =head2 Other improvements and bug fixes Trace messages have been improved: long strings are truncated, strings with non-printable characters are escaped, and lists of strings are printed. The generator was split from a large single script into several small files. To build from git the OCaml bytecode compiler (L) is now required instead of the interpreter (L). Long login names are supported in L. The handle name in L is now set to C (instead of a randomly generated name). Compatibility with OCaml 4.10.0 and 4.11.0. Python AIO buffer adds a new C method allowing Python clients to do sparsification when copying. Compatibility with Python 3.9. External C programs can now be compiled against libnbd’s build directory using C<../libnbd/run ./configure>. Honggfuzz can be used as another external fuzzing option. Fix compilation with glibc 2.32 which deprecates C. Many examples added or extended to demonstrate uses of the new APIs (Eric Blake). =head1 SEE ALSO L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.6.pod0000644000175000017500000000700514525371754014463 =head1 NAME libnbd-release-notes-1.6 - release notes for libnbd 1.6 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.6. This describes the major changes since 1.4. libnbd 1.6.0 was released on B<7 January 2021>. =head2 Security There were no security issues found in this release. If you find a security issue, please read F in the source (online here: L). To find out about previous security issues in libnbd, see L. =head2 New APIs =over 4 =item L =item L This API allows you to control how libnbd handles requests from the program that it thinks would trigger undefined behaviour in the server (such as sending unknown commands, zero-sized or out-of-bounds requests, etc). Normally libnbd is very strict and will prevent you from sending such requests, but you can use this API to relax these restrictions, leaving it up to the server to handle or reject them. Some servers may crash if you do this. =item L =item L =item L These APIs allow you to review or clear the requested metadata contexts. =item L =item L Request that the server lists available metadata contexts. You can only use this in opt mode. =back Thanks: Eric Blake for all of the new APIs. =head2 Enhancements to existing APIs L new flag C drops any commands in flight which have not been sent to the server yet (Eric Blake). All APIs which have flag (bitmask) parameters now define a C constant allowing you to tell which bits represent valid flags at compilation time (Eric Blake). =head2 New features The performance of the L tool has been greatly improved. Also it supports numerous new features. New L I<--map> option showing the allocated and sparse extents of an NBD server. This can also show other information such as dirty bitmaps. =begin comment =head2 Documentation =end comment =head2 Tools L can now mount the NBD export on top of any regular file, it does not have to mount over a directory. L now produces a nice error message if the URI in the I<-u> option or the command in the I<-c> option is wrong (Eric Blake). New L I<--opt-mode> option which requests opt mode on the handle before connecting. L I<--list> option now shows the supported metadata contexts of the server (Eric Blake). The output of L is now usually printed atomically, ie. it will either print the complete output or an error message, but not partial output followed by an error. L can now decode C metacontext (Eric Blake). =begin comment =head2 Tests =end comment =head2 Other improvements and bug fixes Multiple improvements to handling of NBD protocol (Eric Blake). Fix handling of booleans in Python bindings (Eric Blake). Fix handling of flags parameters in OCaml bindings (Eric Blake). Python style fixes (Eric Blake). Fix multiple memory leaks (Eric Blake). OCaml bindings now include ocamldoc-generated documentation, if ocamldoc is installed at build time. The "vector" library from nbdkit is now used by libnbd, simplifying places where we used to use L. =head1 SEE ALSO L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.8.pod0000644000175000017500000001145314525371754014467 =head1 NAME libnbd-release-notes-1.8 - release notes for libnbd 1.8 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.8. This describes the major changes since 1.6. libnbd 1.8.0 was released on B<7 June 2021>. libnbd is now hosted on gitlab: L =head2 Security If you find a security issue, please read F in the source (online here: L). To find out about previous security issues in libnbd, see L. There was one security bug found in libnbd during this release cycle. =head3 CVE-2021-20286 denial of service when using L See the full announcement here: L (Found and fixed by Eric Blake). =head2 New APIs =over 4 =item L =item L These calls allow you to store either an unsigned integer or a pointer in the handle for the application to use for its own purposes. =item L This call constructs an NBD URI which can be used to connect back to the same server (using L or from other tools that support the NBD URI standard). =back =head2 Enhancements to existing APIs Numeric IPv6 URIs (like C) are now supported. libnbd gives a better error message if the server backlog overflows (thanks Xin Long, Lukas Doktor, Eric Blake, Martin Kletzander). =head2 New features Continuous integration (CI) tests now run on every commit and merge request to the upstream repository (Martin Kletzander). =head2 Tools A great deal of work has been done to improve the performance of L (Nir Soffer, Eric Blake). On Linux, nbdcopy now uses readahead when reading from files, and takes steps to preserve the host page cache. nbdcopy new I<--request-size> option to allow controlling the size of requests made to NBD servers. Adjusting this can affect performance (Nir Soffer). nbdcopy now supports C pseudo-target, where it discards the output. This is useful for benchmarking. nbdcopy new I<-v> flag to enable libnbd and other debugging. L I<--list> (which lists all exports of a server) no longer exits early if one of the exports is inaccessible or there is a recoverable error (Eric Blake). nbdinfo now prints the URI of each export in the output making it easier to connect back to each export. L is now multithreaded and supports issuing parallel NBD commands on a single connection as well as multi-conn, and other enhancements have been made. This resulted in around 50% performance improvement when tested with fio. nbdfuse now supports nbdcopy-style C<[ CMD ]>, eg: nbdfuse dir/ramdisk [ nbdkit memory 1G ] nbdfuse now supports trimming. Also it supports fast zeroing, but this requires a forthcoming kernel patch before it will work. nbdfuse sets the virtual file permissions appropriately if the NBD export is read-only. nbdfuse new I<-v> flag to enable libnbd and other debugging. =head2 Tests Added a test of interoperability with L. Note that qemu-storage-daemon was broken in qemu 6.0.0 so this test can fail unless you update to a fixed version (thanks Stefan Hajnoczi, Daniel Berrangé). Added a test of nbdcopy with TLS which was previously untested. Python code style tests are now opt-in using ./configure --enable-python-code-style More tests should now run on FreeBSD and not be skipped. nbdfuse tests now ensure that errors from NBD are transmitted through FUSE back to the local client. C and C are only enabled when running the tests, not when running libnbd programs from the build directory. This makes it easier to do benchmarks. =head2 Other improvements and bug fixes The minimum C compiler is now ISO C99 (previously ANSI C90). FUSE 3 (instead of FUSE 2) is now required to build nbdfuse. The library tries harder not to leak thread-local storage memory on dlclose or exit. (Because of the design of Linux it is not always possible to avoid this, especially in multithreaded programs.) Fix the progress bar in L. UTF-8 export names are now processed and displayed properly by L. The I<--help> output of nbdcopy, nbdfuse and nbdinfo now displays a brief summary of all options and has some examples. The generator now only requires ocamlc, not ocamlfind (Abhay Raj Singh). Golang bindings now use and require golang modules. =head2 Documentation Document using libnbd with the Meson build system. Added Python examples. Add example of how to integrate libnbd with libev (Nir Soffer). =head1 SEE ALSO L. =head1 AUTHORS Eric Blake Richard W.M. Jones Martin Kletzander Nir Soffer =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.10.pod0000644000175000017500000000670714675532320014540 =head1 NAME libnbd-release-notes-1.10 - release notes for libnbd 1.10 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.10. This describes the major changes since 1.8. libnbd 1.10.0 was released on B<23 September 2021>. =head2 Security There were no security bugs found in libnbd during this release cycle. If you find a security issue, please read F in the source (online here: L). To find out about previous security issues in libnbd, see L. =head2 New APIs No new APIs were added in 1.10. =head2 Enhancements to existing APIs L no longer returns service names (eg. C<"nbd://localhost:nbd">). Instead it always returns raw port numbers for portability. L now supports C> query parameter, making it much easier to connect to servers using TLS with X.509 certificates. Also error messages from this API have been improved in the case of some common URI user errors. Python C implements support for C sockets. Fix invalid use of C in Go bindings. =head2 Tools L now uses a default request size of 256K (instead of 32M). This default performs better in most cases. L has a new I<--map --totals> mode which displays a summary of the map. Also new I<--can> and I<--is> options let you test export properties (eg. I<--is read-only>). L I<--map> option uses "data" instead of "allocated" because of ambiguity about what "allocated" means (Eric Blake, Nir Soffer). L shows the export size in both bytes and human units (like C<"1K">). The machine-parsable JSON output has not changed. L now supports efficient zeroing. Note this requires Linux kernel E 5.14. L has new option I<-n> which avoids creating the implicit handle C. Also new option I<-v> which enables debugging. Also the initial help banner is now context sensitive giving more relevant information depending on how nbdsh was invoked. =head2 Tests CI tests were greatly enhanced and many platform-specific fixes were made. To view the latest CI tests and results see: L (Martin Kletzander). Tests now use the new C feature, replacing C on glibc E 2.34 (thanks Eric Blake, Siddhesh Poyarekar). =head2 Other improvements and bug fixes The L progress bar should be displayed more accurately in multithreaded mode. =head2 Documentation C and C documentation has been revised and improved. More consistent option styling is used throughout the documentation. F has been unified (almost) with the copy in nbdkit. =head2 Build F now uses spaces consistently, and has been modernized to support the latest autotools (Eric Blake). We now warn about large stack frames, and a few places which used large stack frames have been fixed. Continue fuzzing using AFL++. Updated the fuzzing documentation. Fix building from git with I<--disable-ocaml>. As long as only C is installed, the generator should still be built and run (Martin Kletzander). =head1 SEE ALSO L. =head1 AUTHORS =begin comment git shortlog -s v1.8.0.. =end comment =over 4 =item Anson Lo =item Eric Blake =item Martin Kletzander =item Richard W.M. Jones =back =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.12.pod0000644000175000017500000001007514525371754014541 =head1 NAME libnbd-release-notes-1.12 - release notes for libnbd 1.12 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.12. This describes the major changes since 1.10. libnbd 1.12.0 was released on B<24 February 2022>. =head2 Security =over 4 =item CVE-2022-0485 Silent data corruption when using L. See the full announcement here: L =back If you find a security issue, please read F in the source (online here: L). To find out about previous security issues in libnbd, see L. =head2 New APIs =over 4 =item get_pread_initialize =item set_pread_initialize Control whether libnbd clears the pread buffer to avoid leaking memory contents if the client does not properly handle errors. These were added as part of the fix for CVE-2022-0485 (Eric Blake). =item get_request_block_size =item set_request_block_size Control whether libnbd requests block size constraints from the server during negotiation (Eric Blake). =back =head2 Enhancements to existing APIs Error messages about incorrect URIs in L have been improved to make common mistakes clearer for the user. =head2 Tools New syntax: C allowing you to query the properties of an NBD server directly. L new I<--queue-size> option to control the maximum size of the internal buffer (Nir Soffer). L now names the source and destination handles to make it easier to understand debug output. =head2 Tests Adopt libvirt-ci's F (Martin Kletzander). Fix the OCaml extents example (thanks Laszlo Ersek). Golang benchmarks were added to the test suite (Nir Soffer). The large F test was split into about a dozen separate tests. Also this adds a new test for checking server-side block size constraint error policy which was missing before. =head2 Other improvements and bug fixes New OCaml C helper which ensures that C is always called even if the inner code throws an exception. The OCaml bindings now consistently use the correct types for buffer sizes everywhere (Laszlo Ersek). Several improvements and fixes to the golang bindings and tests. The golang bindings have been relicensed to LGPLv2+ like the rest of the library and are now published as a golang module at L (Nir Soffer). The Python bindings no longer crash if you pass C in place of a buffer parameter. In addition some memory leaks were fixed (Eric Blake). Various memory leaks have been fixed when using the optional strict_mode settings (Eric Blake). The performance of the internal vector library has been improved greatly and overflow is now handled correctly (Nir Soffer, Laszlo Ersek and Eric Blake). Add C and C Golang examples (Nir Soffer). Error handling was reviewed and fixed across many of the example programs and documentation (Eric Blake, Nir Soffer). Simplify and optimize handling of the extents callback in Golang (Nir Soffer). Golang AioBuffer was enhanced, making it safer to use, faster and adding documentation (Nir Soffer). =head2 Documentation Document the limits on lengths and sizes of parameters to various APIs (Eric Blake). =head2 Build You can now build programs that use the OCaml bindings of libnbd against the libnbd build directory instead of requiring libnbd to be installed (Laszlo Ersek). Compatibility with OCaml 4.13. Line locations in the state machine should be more accurate when stepping through with a debugger like gdb. F<.editorconfig> file can be used to help code formatting, see L (Nir Soffer, Eric Blake). C and C macros can be nested (thanks Eric Blake). =head1 SEE ALSO L. =head1 AUTHORS =begin comment git shortlog -s v1.10.0.. =end comment =over 4 =item Eric Blake =item Laszlo Ersek =item Martin Kletzander =item Nir Soffer =item Richard W.M. Jones =back =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.14.pod0000644000175000017500000000571114525371754014544 =head1 NAME libnbd-release-notes-1.14 - release notes for libnbd 1.14 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.14. This describes the major changes since 1.12. libnbd 1.14.0 was released on B<1 August 2022>. =head2 Security No security issues were found in this release. If you find a security issue, please read F in the source (online here: L). To find out about previous security issues in libnbd, see L. =head2 New APIs No new APIs were added in this release. =head2 Enhancements to existing APIs Optimizations to L (Eric Blake). Many performance enhancements in the Python bindings: C now avoids an extra memory allocation and copy. Buffers can now be passed to C. New methods C allow control over copying and sharing C. Any buffer-like object can be used in C. C now works. Improve error messages when the wrong types are passed to several APIs. Fix usage of C. (Eric Blake) Golang C now calls panic on invalid usage (Nir Soffer). In golang tests, use C so we get full core dumps on failures. kTLS should now work (transparently) when available in the kernel and GnuTLS. Use of kTLS will be indicated in debug output. (Daiki Ueno, František Krenželok) =head2 Tools New L tool which can efficiently hexdump the contents of an NBD server. L now obeys the NBD server minimum/preferred block size when copying, which should make it more efficient and avoids issues with some qemu-nbd configurations where the minimum block size must be obeyed for correct operation. =head2 Tests New tests for C URI support. =head2 Other improvements and bug fixes Fixed rare TLS deadlock when reading from slow servers, and support for clean shutdown when connecting to qemu-nbd over TLS (thanks Michael Ablassmeier). The library now uses the GnuTLS flag C (if available) which ensures that TLS connections should not cause the main program to exit with C in certain cases of server failure. (Libnbd has long used C on non-TLS connections which has a similar effect.) Various enhancements to fuzzing were made, including support for AFL++ clang-LTO mode, ASAN, allowing seed test cases to be captured, and extended testing of APIs. Tests were fixed so they should pass on RHEL 7 and FreeBSD. =head2 Documentation No changes in this release. =head2 Build C macro added to simplify static array sizing (thanks Laszlo Ersek). Various errors found by Coverity were fixed. =head1 SEE ALSO L. =head1 AUTHORS =begin comment git shortlog -s v1.12.0.. =end comment =over 4 =item Eric Blake =item Nir Soffer =item Richard W.M. Jones =back =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.16.pod0000644000175000017500000001350414525371754014545 =head1 NAME libnbd-release-notes-1.16 - release notes for libnbd 1.16 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.16. This describes the major changes since 1.14. libnbd 1.16.0 was released on B<18 April 2023>. =head2 Security No security issues were found in this release. If you find a security issue, please read F in the source (online here: L). To find out about previous security issues in libnbd, see L. =head2 New APIs New API L can be used to test if the client has vsock support (Eric Blake). New API L which allows an extra file descriptor to be passed in (Ming Lei). New L, L, L and L APIs which expose the number of bytes and messages sent and received on the current connection (Eric Blake). New L and L APIs allow you to query the available meta contexts interactively with the server during the negotiation phase of the protocol (Eric Blake). New L lets you control whether the meta context is set during negotiation. This can make certain operations faster, especially C. (Eric Blake) New L, L, L and L APIs let you request meta contexts when using L (Eric Blake). New L and L APIs let you fine-tune when structured replies are requested during the negotiation phase (Eric Blake). New L and L APIs let you fine-tune when STARTTLS is negotiated (Eric Blake). New L and L APIs which allow you to name the socket used for socket activation. Certain servers such as qemu-storage-daemon will use this name on the command line and in scripts. (Thanks Laszlo Ersek). =head2 Enhancements to existing APIs L called with NULL argv parameter previously crashed, but now returns an error (Eric Blake). L can now be called without having negotiated structured replies (Eric Blake). L has a new C flag which can be used to control whether send oversize messages, in order to test servers (Eric Blake). C API pointer parameters that cannot be NULL are now annotated with C (if the compiler supports it) so that you will get a compile time warning if they are used improperly (thanks Eric Blake). C APIs which allocate are now marked with C and similar attributions to improve static analysis of programs using libnbd (Eric Blake). C APIs expressing flag values now use unsigned types, removing some undefined corner-cases with bitwise math on signed ints. This change is API and ABI backwards compatible. (Eric Blake) =head2 Tools New L program which is used to create a Linux FNE>> block device from an NBD server (thanks Ming Lei). L now has colorized output (use I<--no-color> to disable). nbdinfo has new I<--is tls> and I<--can structured-reply> options to let you test for these features on the server (Eric Blake). L now writes progress messages to stderr (previously they were written to F). This makes it consistent with other tools like dd. (Eric Blake). L options I<-c> and I<-u> can now be interleaved, making it easier to toggle optional URI features (Eric Blake). =head2 Language bindings Documentation for the OCaml bindings now includes parameter names. The OCaml bindings now return OCaml error values in exceptions instead of raw C errno numbers. OCaml bindings now support L which uses the sockaddr type directly. The Python bindings now have an explicit C method. Letting the handle go out of scope still works for closing the handle, but now you have the choice to explicitly close the handle before it goes out of scope. If you try to use the handle after closing it, a new C exception will be thrown. The Python bindings now provide a contextlib decorated function, so you can write the more natural S> =head2 Tests Wider CI coverage (Eric Blake). =head2 Other improvements and bug fixes The state machine can now cope with and recover from some bad structured reply messages and unknown cookies sent by the server (Eric Blake). The library is now annotated with C<-z nodelete>, preventing it from being "really" unloaded when you call dlclose(3). This is the only way to prevent a crash in multi-threaded code. See commit 368e3d0d5a887 for details. Improve debugging when the handle enters the C<%DEAD> state. The library is now much more POSIX-compliant and resilient when running subcommands, no longer relying on quirks of the glibc implementation of execvp and other non-async-signal-safe functions (Laszlo Ersek). Source files reformatted to use E 80 columns (Laszlo Ersek). =begin comment =head2 Documentation =end comment =head2 Build Fix build on Alpine Linux + musl which declares C but does not define the associated structures (Eric Blake). Python distutils, deprecated in Python E 3.10, has been replaced by sysconfig (thanks Miro Hrončok). =head1 SEE ALSO L. =head1 AUTHORS =begin comment git shortlog -s v1.14.0.. =end comment =over 4 =item Daniel P. Berrangé =item Eric Blake =item Laszlo Ersek =item Ming Lei =item Richard W.M. Jones =back =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.18.pod0000644000175000017500000001274114525371754014551 =head1 NAME libnbd-release-notes-1.18 - release notes for libnbd 1.18 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.18. This describes the major changes since 1.16. libnbd 1.18.0 was released on B<27 September 2023>. =head2 Security Eric Blake found a case where a server could cause libnbd to crash, although not in the normal libnbd configuration. For more information see the announcement here: L Eric Blake found an issue with L where a server that returns a size E S<(uint64_t)INT64_MAX> and E S<(uint64_t)-1> would cause nbd_get_size to return a negative number (which is not C<-1> and so callers may or may not treat it as an error). While no client code in libnbd itself is affected by this, it could affect external clients. libnbd E 1.16.5 now returns an error (C<-1>) and sets nbd_get_errno to C in this case. This was assigned CVE-2023-5215 (low severity). See the announcement here: L During routine fuzzing we found several security problems which had been introduced during this development cycle and have subsequently been fixed. Stable (even numbered) releases of libnbd should not be vulnerable; do not use the development (odd numbered) releases in production. If you find a security issue, please read F in the source (online here: L). To find out about previous security issues in libnbd, see L. =head2 New APIs =over 4 =item L =item L Make a 64 bit block status request, see L below (Eric Blake). =item L =item L Send filtered block status command, see L below (Eric Blake). =item L Find out if the server supports filtered block status command (Eric Blake). =item L =item L =item L =item L =item L Set/get whether we request extended headers from the server, and find out if we negotiated extended headers, see L below (Eric Blake). =back =head2 Enhancements to existing APIs C<"qemu:"> meta-context constants (eg. C<"qemu:dirty-bitmap"> as C) are now available through the C, Golang, OCaml and Python language bindings (Eric Blake). L now works correctly when in opt mode (Eric Blake). L adds C which allows the client to test how servers behave when the payload length flag is adjusted (Eric Blake). =head2 Protocol libnbd now supports NBD 64 bit "extended headers" and extent sizes. In practice this allows certain requests such as zeroing very large sections of the disk to be implemented much more efficiently, with servers that support this (Eric Blake). libnbd now supports filtered block status requests (Eric Blake). =head2 Tools L, L and L have been expanded to use and report NBD 64 bit / extended header support when the server supports it (Eric Blake). nbdinfo I<--has> can be used as an alias for I<--can>, eg. S> (Eric Blake). nbdinfo makes the export size output optional, for servers which send an oversized one (Eric Blake). nbdcopy now supports "human sizes" for some parameters, eg. S>. =head2 Language bindings New Rust bindings. There is a basic API for ordinary use, and an asynch API implemented using Tokio. S 1.69> is required. (Tage Johansson, supported by sponsorship from Google Summer of Code 2023, additional review and fixes by Eric Blake). OCaml 5 is now supported. Golang 1.21 is now supported. The minimum version is now 1.17 (Eric Blake). Use C to format Golang bindings (Eric Blake). Use C when converting C arrays to Golang slices (Eric Blake). All language bindings support NBD 64 bit / extended headers, and examples of how to use this feature are available (Eric Blake). =head2 Tests Fix a couple of race conditions in tests where we did not fully consume stdin in L pwrite method (Eric Blake). Fuzzing now disables client-side strictness checks, enabling a wider range of inputs to be fuzzed (Eric Blake). =head2 Other improvements and bug fixes Consistently wrap source code at 80 columns (Laszlo Ersek). Debug messages no longer print the very verbose state transitions inside the state machine as these are not usually useful. You can reenable this by defining C<-DLIBNBD_STATE_VERBOSE=1> at compile time. Completion C<.callback> methods are now always called exactly once, and documentation is clearer on when this happens (Eric Blake). =head2 Documentation C has a new I<--replace> parameter which makes it easier to use C-substitutions in documentation. =head2 Build Automake's C option is now used (Eric Blake). Multiple, ongoing fixes to the CI tests (Eric Blake). =head1 SEE ALSO L. =head1 AUTHORS =begin comment git shortlog -s v1.16.0.. =end comment =over 4 =item Eric Blake =item Laszlo Ersek =item Richard W.M. Jones =item Tage Johansson =back =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-release-notes-1.20.pod0000644000175000017500000000712314615664533014540 =head1 NAME libnbd-release-notes-1.20 - release notes for libnbd 1.20 =head1 DESCRIPTION These are the release notes for libnbd stable release 1.20. This describes the major changes since 1.18. libnbd 1.20.0 was released on B<5 April 2024>. =head2 Security Fuzzing found and Eric Blake fixed an assertion which could be triggered by connecting to a malicious server. This was assigned CVE-2023-5871 (low severity). See the announcement here: L If you find a security issue, please read F in the source (online here: L). To find out about previous security issues in libnbd, see L. =begin comment =head2 New APIs =end comment =head2 Enhancements to existing APIs L now correctly supports case insensitive URIs. =head2 Protocol Improve interop with L which supports structured replies but not meta context (Eric Blake). =head2 Tools L adds support for I<--isnt>, I<--cannot>, I<--hasnt>, which lets you check if features of an NBD server are I supported. L adds support for I<--uri> which just prints the canonical URI of the server. L now prints human sizes for block size constraints (Eric Blake). =head2 Language bindings New L manual page added, providing an overview for writing Rust programs using libnbd. Rust documentation has been improved by using a custom translator from our own documentation format (Perl POD) to rustdoc. Some Rust compiler warnings were fixed (Eric Blake). OCaml bindings now support zero-copy in AIO pread and pwrite functions. This change is backwards compatible with existing code. (Thanks Nicolas Ojeda Bar, Anil Madhavapeddy, Simon Cruanes). OCaml bindings now use C (OCaml-level finalizers instead of C-level finalizers) which improves compatibility in OCaml 5.1.1 and above (Guillaume Munch-Maccagnoni). OCaml E 4.05 is formally required and checked in F<./configure>. Previously we did not specify a minimum version of OCaml, but in practice versions older than 4.05 probably didn't work. =head2 Tests Fuzzing approach was changed to use asynchronous commands. This improves speed of fuzzing greatly and should find more issues. Multiple CI fixes (Eric Blake). Respect the user's choice of qemu-nbd, nbdkit and other binaries from (eg) S>. Previously we would often test against binaries found on the path even if the user had specified other binaries to use. =head2 Other improvements and bug fixes L now gracefully disconnects from the server in error cases, improving output (Eric Blake). C now contains a magic value which is checked on entry to libnbd, which should identify mistakes where programs calling libnbd pass in an incorrect pointer. =head2 Documentation An example was added of how to use userfaultfd to mmap an NBD-backed drive. See F in the libnbd sources. Documentation of acceptable handle states in the man pages has been improved. =head2 Build F is a contributed configure test for libnbd (Bruno Haible). C<./configure --with-bash-completions> will now fail if the required bash-completions package is not installed. =head1 SEE ALSO L. =head1 AUTHORS =begin comment git shortlog -s v1.18.0.. =end comment =over 4 =item Eric Blake =item Richard W.M. Jones =item Thomas Weißschuh =back =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/libnbd-security.pod0000644000175000017500000000372414663403427013262 =head1 NAME libnbd-security - information about past security issues in libnbd =head1 DESCRIPTION This page details past security issues found in libnbd. For how to report new security issues, see the C file in the top level source directory, also available online here: L =head2 CVE-2019-14842 protocol downgrade attack when using C See the full announcement and links to mitigation, tests and fixes here: L =head2 remote code execution vulnerability See the full announcement here: L =head2 CVE-2021-20286 denial of service when using L See the full announcement here: L =head2 CVE-2022-0485 silent data corruption when using L See the full announcement here: L =head2 integration testing denial of service with block status See the full announcement here: L =head2 CVE-2023-5215 negative size result from nbd_get_size(3) See the full announcement here: L =head2 CVE-2023-5871 assertion failure for 64-bit flags passed to nbd_block_status(3) See the full announcement here: L =head2 CVE-2024-7383 multiple flaws in TLS server certificate checking See the full announcement here: L =head1 SEE ALSO L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_create.pod0000644000175000017500000000504214675532310012241 =head1 NAME nbd_create, nbd_close, nbd_get_error, nbd_get_errno - create libnbd handles and fetch errors =head1 SYNOPSIS #include =for paragraph struct nbd_handle *nbd; =for paragraph struct nbd_handle *nbd_create (void); =for paragraph void nbd_close (struct nbd_handle *nbd); =for paragraph const char *nbd_get_error (void); =for paragraph int nbd_get_errno (void); =head1 DESCRIPTION B is an opaque structure which describes an NBD client handle and the connection to an NBD server. =head2 Creating a libnbd handle B creates a new handle. It returns a pointer to the opaque handle structure. On error this returns C. See L for how to get further details of the error. =head2 Closing a handle B closes the handle, closing and freeing any associated resources. The final status of any command that has not been retired (whether by L or by a low-level completion callback returning C<1>) is lost. This function is not safe to call while any other thread is still using any C API on the same handle. This function can block in the case where we wait for a subprocess (eg. one created with L). =head2 Getting the latest error message in the thread B returns the most recent error message in the current thread. The error message is only valid if called immediately after the failing call, from the same thread. The error string returned will be freed up next time any libnbd API is called from the same thread, so if you need to keep it you must make a copy. This should never return C provided there was an error returned from the immediately preceding libnbd call in the current thread. B returns the most recent C in the current thread. Not all errors have corresponding errnos, so even if there has been an error this may return C<0>. Error codes are the standard ones from Cerrno.hE>. See L for more discussion of how error handling works in libnbd. =head1 EXAMPLE #include main () { struct nbd_handle *nbd; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); nbd_close (nbd); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } =head1 VERSION These functions were all present in libnbd 1.0. =head1 SEE ALSO L, L. =head1 AUTHORS Eric Blake Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/docs/nbd_close.30000644000175000017500000000002614525371754011467 .so man3/nbd_create.3 libnbd-1.20.3/docs/nbd_get_error.30000644000175000017500000000002614525371754012352 .so man3/nbd_create.3 libnbd-1.20.3/docs/nbd_get_errno.30000644000175000017500000000002614525371754012346 .so man3/nbd_create.3 libnbd-1.20.3/examples/0000755000175000017500000000000014675532654010427 5libnbd-1.20.3/examples/Makefile.am0000644000175000017500000001276314527170501012375 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk EXTRA_DIST = LICENSE-FOR-EXAMPLES noinst_PROGRAMS = \ aio-connect-read \ batched-read-write \ connect-command \ connect-uri \ encryption \ fetch-first-sector \ get-size \ list-exports \ open-qcow2 \ reads-and-writes \ server-flags \ strict-structured-reads \ threaded-reads-and-writes \ userfault-map \ $(NULL) aio_connect_read_SOURCES = \ aio-connect-read.c \ $(NULL) aio_connect_read_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) aio_connect_read_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) aio_connect_read_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) batched_read_write_SOURCES = \ batched-read-write.c \ $(NULL) batched_read_write_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) batched_read_write_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) batched_read_write_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) connect_command_SOURCES = \ connect-command.c \ $(NULL) connect_command_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) connect_command_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) connect_command_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) connect_uri_SOURCES = \ connect-uri.c \ $(NULL) connect_uri_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) connect_uri_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) connect_uri_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) encryption_SOURCES = \ encryption.c \ $(NULL) encryption_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) encryption_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) encryption_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) fetch_first_sector_SOURCES = \ fetch-first-sector.c \ $(NULL) fetch_first_sector_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) fetch_first_sector_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) fetch_first_sector_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) get_size_SOURCES = \ get-size.c \ $(NULL) get_size_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) get_size_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) get_size_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) list_exports_SOURCES = \ list-exports.c \ $(NULL) list_exports_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) list_exports_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) list_exports_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) open_qcow2_SOURCES = \ open-qcow2.c \ $(NULL) open_qcow2_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) open_qcow2_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) open_qcow2_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) reads_and_writes_SOURCES = \ reads-and-writes.c \ $(NULL) reads_and_writes_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) reads_and_writes_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) reads_and_writes_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) server_flags_SOURCES = \ server-flags.c \ $(NULL) server_flags_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) server_flags_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) server_flags_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) strict_structured_reads_SOURCES = \ strict-structured-reads.c \ $(NULL) strict_structured_reads_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) strict_structured_reads_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) strict_structured_reads_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(NULL) threaded_reads_and_writes_SOURCES = \ threaded-reads-and-writes.c \ $(NULL) threaded_reads_and_writes_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) threaded_reads_and_writes_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(PTHREAD_CFLAGS) \ $(NULL) threaded_reads_and_writes_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(PTHREAD_LIBS) \ $(NULL) # This userfaultfd example only works on Linux >= 4.11. However # creating an autoconf conditional to express this is difficult, so on # other platforms this will still compile but the program will just # print an error. userfault_map_SOURCES = \ userfault-map.c \ $(NULL) userfault_map_CPPFLAGS = \ -I$(top_srcdir) -I$(top_builddir) -I$(top_srcdir)/include \ $(NULL) userfault_map_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(PTHREAD_CFLAGS) \ $(NULL) userfault_map_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(PTHREAD_LIBS) \ $(NULL) if HAVE_GLIB noinst_PROGRAMS += \ glib-main-loop glib_main_loop_SOURCES = \ glib-main-loop.c \ $(NULL) glib_main_loop_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) glib_main_loop_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(GLIB_CFLAGS) \ $(NULL) glib_main_loop_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GLIB_LIBS) \ $(NULL) endif if HAVE_LIBEV noinst_PROGRAMS += \ copy-libev copy_libev_SOURCES = \ copy-libev.c \ $(NULL) copy_libev_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) copy_libev_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(LIBEV_CFLAGS) \ $(NULL) copy_libev_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(LIBEV_LIBS) \ $(NULL) endif libnbd-1.20.3/examples/Makefile.in0000644000175000017500000023533614675532455012427 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # common-rules.mk is included in every Makefile.am. # subdir-rules.mk is included only in subdirectories. 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$(generator_built): $(top_builddir)/generator/stamp-generator $(top_builddir)/generator/stamp-generator: \ $(wildcard $(top_srcdir)/generator/*.ml) \ $(wildcard $(top_srcdir)/generator/*.mli) \ $(wildcard $(top_srcdir)/generator/states*.c) $(MAKE) -C $(top_builddir)/generator stamp-generator %.cmi: %.mli $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ %.cmo: %.ml $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ @HAVE_OCAMLOPT_TRUE@%.cmx: %.ml @HAVE_OCAMLOPT_TRUE@ $(OCAMLFIND) ocamlopt $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ $(top_builddir)/podwrapper.pl: $(top_srcdir)/podwrapper.pl.in $(MAKE) -C $(top_builddir) podwrapper.pl # Tell versions [3.59,3.63) of GNU make to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: libnbd-1.20.3/examples/aio-connect-read.c0000644000175000017500000000633214525371754013623 /* This example shows how to use the AIO (asynchronous) low * level API to connect to a server and read the disk. * * Here are a few ways to try this example: * * nbdkit -U - linuxdisk . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - floppy . \ * --run './aio-connect-read $unixsocket' * * nbdkit -U - pattern size=1M \ * --run './aio-connect-read $unixsocket' */ #include #include #include #include #include #include #include #define NR_SECTORS 32 #define SECTOR_SIZE 512 struct data { uint64_t offset; char sector[SECTOR_SIZE]; }; static int hexdump (void *user_data, int *error) { struct data *data = user_data; FILE *pp; if (*error) { errno = *error; perror ("failed to read"); exit (EXIT_FAILURE); } printf ("sector at offset 0x%" PRIx64 ":\n", data->offset); pp = popen ("hexdump -C", "w"); if (pp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (data->sector, SECTOR_SIZE, 1, pp); pclose (pp); printf ("\n"); /* Returning 1 from the callback automatically retires * the command. */ return 1; } static struct data data[NR_SECTORS]; int main (int argc, char *argv[]) { struct nbd_handle *nbd; size_t i; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a Unix domain socket. * This only starts the connection. */ if (nbd_aio_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Wait for the connection to complete. The use of * nbd_poll here is only as an example. You could also * integrate this with poll(2), glib or another main * loop. Read libnbd(3) and the source file lib/poll.c. */ while (!nbd_aio_is_ready (nbd)) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } assert (nbd_get_size (nbd) >= NR_SECTORS * SECTOR_SIZE); /* Issue read commands for the first NR sectors. */ for (i = 0; i < NR_SECTORS; ++i) { data[i].offset = i * SECTOR_SIZE; /* The callback (hexdump) is called when the command * completes. The buffer must continue to exist while * the command is running. */ if (nbd_aio_pread (nbd, data[i].sector, SECTOR_SIZE, data[i].offset, (nbd_completion_callback) { .callback = hexdump, .user_data = &data[i], }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Run the main loop until all the commands have * completed and retired. Again the use of nbd_poll * here is only as an example. */ while (nbd_aio_in_flight (nbd) > 0) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/batched-read-write.c0000664000175000017500000001261414525371754014150 /* Example usage with nbdkit: * * nbdkit -U - --filter=noparallel memory 2M \ * --run './batched-read-write $unixsocket' * * This will attempt to batch a large aio read request immediately * followed by a large aio write request, prior to waiting for any * command replies from the server. A naive client that does not check * for available read data related to the first command while trying * to write data for the second command, coupled with a server that * only processes commands serially, would cause deadlock (both * processes fill up their write buffers waiting for a reader); thus, * this tests that libnbd is smart enough to always respond to replies * for in-flight requests even when it has batched up other commands * to write. * * To run it against a remote server over TCP: * * ./batched-read-write hostname port * or * ./batched-read-write nbd://hostname:port */ #include #include #include #include #include #include #include #include #include #include #include #include /* The single NBD handle. */ static struct nbd_handle *nbd; /* Buffers used for the test. */ static char *in, *out; static int64_t packetsize; static int try_deadlock (void *arg) { struct pollfd fds[1]; size_t i; int64_t cookies[2], done; unsigned dir; int r; /* Issue commands. */ cookies[0] = nbd_aio_pread (nbd, in, packetsize, 0, NBD_NULL_COMPLETION, 0); if (cookies[0] == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } cookies[1] = nbd_aio_pwrite (nbd, out, packetsize, packetsize, NBD_NULL_COMPLETION, 0); if (cookies[1] == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } /* Now wait for commands to retire, or for deadlock to occur */ while (nbd_aio_in_flight (nbd) > 0) { if (nbd_aio_is_dead (nbd) || nbd_aio_is_closed (nbd)) { fprintf (stderr, "connection is dead or closed\n"); goto error; } fds[0].fd = nbd_aio_get_fd (nbd); fds[0].events = 0; fds[0].revents = 0; dir = nbd_aio_get_direction (nbd); if ((dir & LIBNBD_AIO_DIRECTION_READ) != 0) fds[0].events |= POLLIN; if ((dir & LIBNBD_AIO_DIRECTION_WRITE) != 0) fds[0].events |= POLLOUT; if (poll (fds, 1, -1) == -1) { perror ("poll"); goto error; } if ((dir & LIBNBD_AIO_DIRECTION_READ) != 0 && (fds[0].revents & POLLIN) != 0) nbd_aio_notify_read (nbd); else if ((dir & LIBNBD_AIO_DIRECTION_WRITE) != 0 && (fds[0].revents & POLLOUT) != 0) nbd_aio_notify_write (nbd); /* If a command is ready to retire, retire it. */ while ((done = nbd_aio_peek_command_completed (nbd)) > 0) { for (i = 0; i < sizeof cookies / sizeof cookies[0]; ++i) { if (cookies[i] == done) { r = nbd_aio_command_completed (nbd, cookies[i]); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } assert (r == 1); cookies[i] = 0; } } } } assert (nbd_aio_in_flight (nbd) == 0); printf ("finished OK\n"); return 0; error: fprintf (stderr, "failed\n"); return -1; } static void alarm_handler (int sig) { fprintf (stderr, "alarm fired; deadlock probably occurred\n"); _exit (EXIT_FAILURE); } int main (int argc, char *argv[]) { int64_t exportsize; if (argc < 2 || argc > 3) { fprintf (stderr, "%s uri | socket | hostname port\n", argv[0]); exit (EXIT_FAILURE); } nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect synchronously as this is simpler. */ if (argc == 2) { if (strstr (argv[1], "://")) { if (nbd_connect_uri (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } else if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } else { if (nbd_connect_tcp (nbd, argv[1], argv[2]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } if (nbd_is_read_only (nbd) == 1) { fprintf (stderr, "%s: error: this NBD export is read-only\n", argv[0]); exit (EXIT_FAILURE); } exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } packetsize = exportsize / 2; if (packetsize > 2 * 1024 * 1024) packetsize = 2 * 1024 * 1024; in = malloc (packetsize); out = malloc (packetsize); if (!in || !out) { fprintf (stderr, "insufficient memory\n"); exit (EXIT_FAILURE); } /* Attempt to be non-destructive, by writing what file already contains */ if (nbd_pread (nbd, out, packetsize, packetsize, 0) == -1) { fprintf (stderr, "sync read failed: %s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* When not debugging, set an alarm, in case this test deadlocks * instead of succeeding */ if (nbd_get_debug (nbd) < 1) { signal (SIGALRM, alarm_handler); alarm (10); } if (try_deadlock (NULL) == -1) exit (EXIT_FAILURE); if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); return EXIT_SUCCESS; } libnbd-1.20.3/examples/connect-command.c0000664000175000017500000000350414525371754013560 /* This example shows how to run an NBD server * (nbdkit) as a subprocess of libnbd. */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char wbuf[512], rbuf[512]; size_t i; /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run nbdkit as a subprocess. */ char *args[] = { "nbdkit", /* You must use ‘-s’ (which tells nbdkit to serve * a single connection on stdin/stdout). */ "-s", /* It is recommended to use ‘--exit-with-parent’ * to ensure nbdkit is always cleaned up even * if the main program crashes. */ "--exit-with-parent", /* Use this to enable nbdkit debugging. */ "-v", /* The nbdkit plugin name - this is a RAM disk. */ "memory", "size=1M", /* Use NULL to terminate the arg list. */ NULL }; if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Write some random data to the first sector. */ for (i = 0; i < sizeof wbuf; ++i) wbuf[i] = i % 13; if (nbd_pwrite (nbd, wbuf, sizeof wbuf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector back. */ if (nbd_pread (nbd, rbuf, sizeof rbuf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Close the libnbd handle. */ nbd_close (nbd); /* What was read must be exactly the same as what * was written. */ if (memcmp (rbuf, wbuf, sizeof rbuf) != 0) { fprintf (stderr, "FAILED: " "read data did not match written data\n"); exit (EXIT_FAILURE); } exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/connect-uri.c0000644000175000017500000000424314616437241012733 /* This example shows how to connect to an NBD * server using the server's NBD URI. * * To test this with a recent version of nbdkit * that supports the '$uri' syntax, do: * * nbdkit -U - random 1M \ * --run './connect-uri $uri' * * To test connecting to a remote NBD server * listening on port 10809, do: * * ./connect-uri nbd://remote/ */ #include #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *s; int64_t size; if (argc != 2) { fprintf (stderr, "usage: %s URI\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information * (for nbd_get_canonical_export_name below) */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD URI. */ printf ("connecting to %s ...\n", argv[1]); fflush (stdout); if (nbd_connect_uri (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("connected\n"); /* Print the URI, export name, size and other info. */ printf ("requested URI: %s\n", argv[1]); s = nbd_get_uri (nbd); printf ("generated URI: %s\n", s ? s : "NULL"); free (s); size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("size: %" PRIi64 "\n", size); s = nbd_get_export_name (nbd); printf ("requested export name: %s\n", s ? s : "NULL"); free (s); #if LIBNBD_HAVE_NBD_GET_CANONICAL_EXPORT_NAME s = nbd_get_canonical_export_name (nbd); printf ("canonical export name: %s\n", s ? s : "NULL"); free (s); #endif #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION s = nbd_get_export_description (nbd); printf ("export description: %s\n", s ? s : "NULL"); free (s); #endif /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/copy-libev.c0000644000175000017500000004421614616437241012562 /* This example shows you how to make libnbd interoperate with the * libev event loop. For more information about libvev see: * * http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod * * To build it you need the libev-devel pacakge. * * To run it: * * SRC=/tmp/src.sock * DST=/tmp/dst.sock * nbdkit -r pattern size=1G -U $SRC * nbdkit memory size=1g -U $DST * ./copy-libev nbd+unix:///?socket=$SRC nbd+unix:///?socket=$DST * * To debug it: * * COPY_LIBEV_DEBUG=1 ./copy-ev ... */ #include #include #include #include #include #include #include #include #include #include #include /* These values depend on the enviroment tested. * * For shared storage using direct I/O: * * MAX_REQUESTS 16 * REQUEST_SIZE (1024 * 1024) * * For nbdkit memory plugin: * * MAX_REQUESTS 8 * REQUEST_SIZE (128 * 1024) */ #define MAX_REQUESTS 16 #define REQUEST_SIZE (1024 * 1024) #define EXTENTS_SIZE (128 * 1024 * 1024) #define GIB (1024 * 1024 * 1024) #define MIN(a,b) (a) < (b) ? (a) : (b) #define PROG "copy-libev" #define DEBUG(fmt, ...) \ do { \ if (debug) \ fprintf (stderr, PROG ": " fmt "\n", ## __VA_ARGS__); \ } while (0) #define FAIL(fmt, ...) \ do { \ fprintf (stderr, PROG ": " fmt "\n", ## __VA_ARGS__); \ exit (EXIT_FAILURE); \ } while (0) struct connection { ev_io watcher; struct nbd_handle *nbd; bool can_zero; bool can_extents; }; enum request_state { IDLE, /* Not used yet. */ EXTENTS, /* Getting extents from source. */ READ, /* Read from source. */ WRITE, /* Write to destiation. */ ZERO, /* Write zeroes to destiation. */ SLEEP /* Waiting for extents completion. */ }; static const char *state_names[] = { "idle", "extents", "read", "write", "zero", "sleep" }; struct request { ev_timer watcher; /* For starting on next loop iteration. */ int64_t offset; size_t length; bool zero; unsigned char *data; size_t index; ev_tstamp started; enum request_state state; }; struct extent { uint64_t length; bool zero; }; static struct ev_loop *loop; static ev_prepare prepare; static struct connection src; static struct connection dst; static struct request requests[MAX_REQUESTS]; /* List of extents received from source server. */ static struct extent *extents; static size_t extents_len; static size_t extents_pos; /* Set when we start asynchronous block status request. */ static bool extents_in_progress; static int64_t size; static int64_t offset; static int64_t written; static bool debug; static ev_tstamp started; static ev_timer progress; static inline void start_request_soon (struct request *r); static void start_request_cb (struct ev_loop *loop, ev_timer *w, int revents); static void start_request (struct request *r); static void start_read (struct request *r); static void start_write (struct request *r); static void start_zero (struct request *r); static int read_completed (void *user_data, int *error); static int request_completed (void *user_data, int *error); /* Return true iff data is all zero bytes. * * Based on Rusty Russell's memeqzero: * https://rusty.ozlabs.org/?p=560 */ static bool is_buf_zero (const unsigned char *data, size_t len) { const unsigned char *p = data; size_t i; for (i = 0; i < 16; i++) { if (len == 0) return true; if (*p) return false; p++; len--; } return memcmp (data, p, len) == 0; } static inline const char * request_state (struct request *r) { return state_names[r->state]; } static inline int get_fd (struct connection *c) { return nbd_aio_get_fd (c->nbd); } static inline int get_events (struct connection *c) { unsigned dir = nbd_aio_get_direction (c->nbd); switch (dir) { case LIBNBD_AIO_DIRECTION_READ: return EV_READ; case LIBNBD_AIO_DIRECTION_WRITE: return EV_WRITE; case LIBNBD_AIO_DIRECTION_BOTH: return EV_READ | EV_WRITE; default: return 0; } } static int extent_callback (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { struct request *r = user_data; if (strcmp (metacontext, LIBNBD_CONTEXT_BASE_ALLOCATION) != 0) { DEBUG ("Unexpected meta context: %s", metacontext); return 1; } if (*error) { DEBUG ("r%zu: extent callback for %s failed: %s", r->index, LIBNBD_CONTEXT_BASE_ALLOCATION, strerror (*error)); return 1; } extents_len = nr_entries; extents = malloc (extents_len * sizeof *extents); if (extents == NULL) FAIL ("Cannot allocated extents: %s", strerror (errno)); /* Copy libnbd entries to extents array. */ for (int i = 0; i < extents_len; i++) { extents[i].length = entries[i].length; /* Libnbd exposes both ZERO and HOLE flags. We care only about * ZERO status, meaning we can copy this extent using efficinet * zero method. */ extents[i].zero = (entries[i].flags & LIBNBD_STATE_ZERO) != 0; } DEBUG ("r%zu: received %zu extents for %s", r->index, extents_len, metacontext); return 1; } static inline void put_to_sleep (struct request *r) { DEBUG ("r%zu: sleeping", r->index); r->state = SLEEP; } static void wake_up_requests () { /* Start requests on the next loop iteration to avoid a deadlock if * this is called from source nbd callback, and we need to start a * read. */ for (int i = 0; i < MAX_REQUESTS; i++) { struct request *r = &requests[i]; if (r->state == SLEEP) { DEBUG ("r%zu: woke up time=%.6f", r->index, ev_now (loop) - r->started); start_request_soon (r); } } } static int extents_completed (void *user_data, int *error) { struct request *r = (struct request *)user_data; DEBUG ("r%zu: extents completed time=%.6f", r->index, ev_now (loop) - r->started); extents_in_progress = false; /* * If extents failed (*error != 0), the extent callback was not * called, or called with an error, so we did not allocate new * extents array. */ if (extents == NULL) { DEBUG ("r%zu: received no extents, disabling extents", r->index); src.can_extents = false; } /* Start the request to process recvievd extents. This must be done on the * next loop iteration, to avoid deadlock if we need to start a read. */ start_request_soon (r); /* Also wake up requests waiting for extents completion */ wake_up_requests (); return 1; } static bool start_extents (struct request *r) { size_t count = MIN (EXTENTS_SIZE, size - offset); int64_t cookie; DEBUG ("r%zu: start extents offset=%" PRIi64 " count=%zu", r->index, offset, count); cookie = nbd_aio_block_status_64 ( src.nbd, count, offset, (nbd_extent64_callback) { .callback=extent_callback, .user_data=r }, (nbd_completion_callback) { .callback=extents_completed, .user_data=r }, 0); if (cookie == -1) { DEBUG ("Cannot get extents: %s", nbd_get_error ()); src.can_extents = false; return false; } r->state = EXTENTS; extents_in_progress = true; return true; } /* Return next extent to process. */ static void next_extent (struct request *r) { uint32_t limit; uint32_t length = 0; bool is_zero; assert (extents); is_zero = extents[extents_pos].zero; /* Zero can be much faster, so try to zero entire extent. */ if (is_zero && dst.can_zero) limit = MIN (EXTENTS_SIZE, size - offset); else limit = MIN (REQUEST_SIZE, size - offset); while (length < limit) { DEBUG ("e%zu: offset=%" PRIi64 " len=%" PRIu64 " zero=%d", extents_pos, offset, extents[extents_pos].length, is_zero); /* If this extent is too large, steal some data from it to * complete the request. */ if (length + extents[extents_pos].length > limit) { uint32_t stolen = limit - length; extents[extents_pos].length -= stolen; length += stolen; break; } /* Consume the entire extent and start looking at the next one. */ length += extents[extents_pos].length; extents[extents_pos].length = 0; if (extents_pos + 1 == extents_len) break; extents_pos++; /* If next extent is different, we are done. */ if (extents[extents_pos].zero != is_zero) break; } assert (length > 0 && length <= limit); r->offset = offset; r->length = length; r->zero = is_zero; DEBUG ("r%zu: extent offset=%" PRIi64 " len=%zu zero=%d", r->index, r->offset, r->length, r->zero); offset += length; if (extents_pos + 1 == extents_len && extents[extents_pos].length == 0) { /* Processed all extents, clear extents. */ DEBUG ("r%zu: consumed all extents offset=%" PRIi64, r->index, offset); free (extents); extents = NULL; extents_pos = 0; extents_len = 0; } } static inline void start_request_soon (struct request *r) { r->state = IDLE; ev_timer_init (&r->watcher, start_request_cb, 0, 0); ev_timer_start (loop, &r->watcher); } static void start_request_cb (struct ev_loop *loop, ev_timer *w, int revents) { struct request *r = (struct request *)w; start_request (r); } /* Start async copy or zero request. */ static void start_request (struct request *r) { /* Cancel the request if we are done. */ if (offset == size) return; r->started = ev_now (loop); /* If needed, get more extents from server. */ if (src.can_extents && extents == NULL) { if (extents_in_progress) { put_to_sleep (r); return; } if (start_extents (r)) return; } if (src.can_extents) { /* Handle the next extent. */ next_extent (r); if (r->zero) { if (dst.can_zero) { start_zero (r); } else { memset (r->data, 0, r->length); start_write (r); } } else { start_read (r); } } else { /* Extents not available. */ r->length = MIN (REQUEST_SIZE, size - offset); r->offset = offset; start_read (r); offset += r->length; } } static void start_read (struct request *r) { int64_t cookie; r->state = READ; DEBUG ("r%zu: start read offset=%" PRIi64 " len=%zu", r->index, r->offset, r->length); cookie = nbd_aio_pread ( src.nbd, r->data, r->length, r->offset, (nbd_completion_callback) { .callback=read_completed, .user_data=r }, 0); if (cookie == -1) FAIL ("Cannot start read: %s", nbd_get_error ()); } static int read_completed (void *user_data, int *error) { struct request *r = (struct request *)user_data; if (*error) FAIL ("r%zu: read failed: %s", r->index, strerror (*error)); DEBUG ("r%zu: read completed offset=%" PRIi64 " len=%zu", r->index, r->offset, r->length); if (dst.can_zero && is_buf_zero (r->data, r->length)) start_zero (r); else start_write (r); return 1; } static void start_write (struct request *r) { int64_t cookie; r->state = WRITE; DEBUG ("r%zu: start write offset=%" PRIi64 " len=%zu", r->index, r->offset, r->length); cookie = nbd_aio_pwrite ( dst.nbd, r->data, r->length, r->offset, (nbd_completion_callback) { .callback=request_completed, .user_data=r }, 0); if (cookie == -1) FAIL ("Cannot start write: %s", nbd_get_error ()); } static void start_zero (struct request *r) { int64_t cookie; r->state = ZERO; DEBUG ("r%zu: start zero offset=%" PRIi64 " len=%zu", r->index, r->offset, r->length); cookie = nbd_aio_zero ( dst.nbd, r->length, r->offset, (nbd_completion_callback) { .callback=request_completed, .user_data=r }, 0); if (cookie == -1) FAIL ("Cannot start zero: %s", nbd_get_error ()); } /* Called when async copy or zero request completed. */ static int request_completed (void *user_data, int *error) { struct request *r = (struct request *)user_data; if (*error) FAIL ("r%zu: %s failed: %s", r->index, request_state (r), strerror (*error)); written += r->length; DEBUG ("r%zu: %s completed offset=%" PRIi64 " len=%zu, time=%.6f", r->index, request_state (r), r->offset, r->length, ev_now (loop) - r->started); if (written == size) { /* The last write completed. Stop all watchers and break out * from the event loop. */ ev_io_stop (loop, &src.watcher); ev_io_stop (loop, &dst.watcher); ev_prepare_stop (loop, &prepare); ev_break (loop, EVBREAK_ALL); } /* If we have more work, start a new request on the next loop * iteration, to avoid deadlock if we need to start a zero or write. */ if (offset < size) start_request_soon (r); return 1; } /* Notify libnbd about io events. */ static void io_cb (struct ev_loop *loop, ev_io *w, int revents) { struct connection *c = (struct connection *)w; /* Based on lib/poll.c, we need to prefer read over write, and avoid * invoking both notify_read() and notify_write(), since notify_read() may * change the state of the handle. */ if (revents & EV_READ) nbd_aio_notify_read (c->nbd); else if (revents & EV_WRITE) nbd_aio_notify_write (c->nbd); } static void progress_cb (struct ev_loop *loop, ev_timer *w, int revents) { ev_tstamp duration = ev_now (loop) - started; printf ("[ %6.2f%% ] %.2f GiB, %.2f seconds, %.2f GiB/s %c", (double) written / size * 100, (double) size / GIB, duration, (double) written / GIB / duration, revents ? '\r' : '\n'); fflush (stdout); } static void start_progress () { started = ev_now (loop); ev_timer_init (&progress, progress_cb, 0, 0.1); ev_timer_start (loop, &progress); } static void finish_progress () { ev_now_update (loop); progress_cb (loop, &progress, 0); } static inline void update_watcher (struct connection *c) { int events = get_events (c); if (events != c->watcher.events) { ev_io_stop (loop, &c->watcher); ev_io_set (&c->watcher, get_fd (c), events); ev_io_start (loop, &c->watcher); } } /* Update watchers events based on libnbd handle state. */ static void prepare_cb (struct ev_loop *loop, ev_prepare *w, int revents) { update_watcher (&src); update_watcher (&dst); } int main (int argc, char *argv[]) { int i; loop = EV_DEFAULT; if (argc != 3) FAIL ("Usage: %s src-uri dst-uri", PROG); start_progress (); src.nbd = nbd_create (); if (src.nbd == NULL) FAIL ("Cannot create source: %s", nbd_get_error ()); dst.nbd = nbd_create (); if (dst.nbd == NULL) FAIL ("Cannot create destination: %s", nbd_get_error ()); debug = getenv ("COPY_LIBEV_DEBUG") != NULL; /* Configure soruce to report extents. */ if (nbd_add_meta_context (src.nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) FAIL ("Cannot add base:allocation: %s", nbd_get_error ()); /* Connecting is fast, so use the syncronous API. */ if (nbd_connect_uri (src.nbd, argv[1])) FAIL ("Cannot connect to source: %s", nbd_get_error ()); src.can_extents = nbd_can_meta_context ( src.nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) > 0; if (nbd_connect_uri (dst.nbd, argv[2])) FAIL ("Cannot connect to destination: %s", nbd_get_error ()); size = nbd_get_size (src.nbd); if (size > nbd_get_size (dst.nbd)) FAIL ("Destinatio is not large enough\n"); /* Check destination server capabilities. */ dst.can_zero = nbd_can_zero (dst.nbd) > 0; /* Start the copy "loop". When request completes, it starts the * next request, until entire image was copied. */ for (i = 0; i < MAX_REQUESTS; i++) { struct request *r = &requests[i]; r->index = i; /* * Clear the buffer before starting the copy, so if we fail to * handle a read error we will not write uninitilized data to * the destination server, which may leak sensitive data to * remote host. */ r->data = calloc (1, REQUEST_SIZE); if (r->data == NULL) FAIL ("Cannot allocate buffer: %s", strerror (errno)); start_request (r); } /* Start watching events on src and dst handles. */ ev_io_init (&src.watcher, io_cb, get_fd (&src), get_events (&src)); ev_io_start (loop, &src.watcher); ev_io_init (&dst.watcher, io_cb, get_fd (&dst), get_events (&dst)); ev_io_start (loop, &dst.watcher); /* Register a prepare watcher for updating src and dst events once * before the event loop waits for new events. */ ev_prepare_init (&prepare, prepare_cb); ev_prepare_start (loop, &prepare); /* Run the event loop. The call will return when entire image was * copied. */ ev_run (loop, 0); /* Copy completed - flush data to storage. */ DEBUG ("flush"); if (nbd_flush (dst.nbd, 0)) FAIL ("Cannot flush: %s", nbd_get_error ()); /* We don't care about errors here since data was flushed. */ nbd_shutdown (dst.nbd, 0); nbd_close (dst.nbd); nbd_shutdown (src.nbd, 0); nbd_close (src.nbd); /* We can free requests data here, but it is not really needed. */ finish_progress (); return 0; } libnbd-1.20.3/examples/encryption.c0000664000175000017500000000537014525371754012710 /* An example showing how to connect to a server which is * using TLS encryption. * * This requires nbdkit, and psktool from gnutls. * * Both libnbd and nbdkit support TLS-PSK which is a * simpler-to-deploy form of encryption. (Of course * certificate-based encryption is also supported, but * it’s harder to make a self-contained example). */ #include #include #include #include #include #define TMPDIR "/tmp/XXXXXX" #define KEYS "keys.psk" #define USERNAME "alice" static char dir[] = TMPDIR; static char keys[] = TMPDIR "/" KEYS; static char cmd[] = "psktool -u " USERNAME " -p " TMPDIR "/" KEYS; /* Remove the temporary keys file when the program * exits. */ static void cleanup_keys (void) { unlink (keys); rmdir (dir); } /* Create the temporary keys file to share with the * server. */ static void create_keys (void) { size_t i; if (mkdtemp (dir) == NULL) { perror ("mkdtemp"); exit (EXIT_FAILURE); } i = strlen (cmd) - strlen (TMPDIR) - strlen (KEYS) - 1; memcpy (&cmd[i], dir, strlen (TMPDIR)); memcpy (keys, dir, strlen (TMPDIR)); if (system (cmd) != 0) { fprintf (stderr, "psktool command failed\n"); exit (EXIT_FAILURE); } atexit (cleanup_keys); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; create_keys (); /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Enable TLS in the client. */ if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Enable TLS-PSK and pass the keys filename. */ if (nbd_set_tls_psk_file (nbd, keys) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set the local username for authentication. */ if (nbd_set_tls_username (nbd, USERNAME) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run nbdkit as a subprocess, enabling and requiring * TLS-PSK encryption. */ char *args[] = { "nbdkit", "-s", "--exit-with-parent", "--tls", "require", "--tls-psk", keys, "pattern", "size=1M", NULL }; if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* TLS connections must be shut down. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/fetch-first-sector.c0000664000175000017500000000264414525371754014232 /* This example shows how to connect to an NBD server * and fetch and print the first sector (usually the * boot sector or partition table or filesystem * superblock). * * You can test it with nbdkit like this: * * nbdkit -U - floppy . \ * --run './fetch-first-sector $unixsocket' * * The nbdkit floppy plugin creates an MBR disk so the * first sector is the partition table. */ #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; FILE *pp; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector synchronously. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Close the libnbd handle. */ nbd_close (nbd); /* Print the first sector. */ pp = popen ("hexdump -C", "w"); if (pp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (buf, sizeof buf, 1, pp); pclose (pp); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/get-size.c0000664000175000017500000000217714525371754012247 /* This example shows how to connect to an NBD * server and read the size of the disk. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './get-size $unixsocket' */ #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t size; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the size in bytes and print it. */ size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("%s: size = %" PRIi64 " bytes\n", argv[1], size); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/glib-main-loop.c0000644000175000017500000003152314525371754013321 /* This example shows you how to make libnbd interoperate with the * glib main loop. For more information about glib main loop see: * * https://developer.gnome.org/glib/stable/glib-The-Main-Event-Loop.html * * To run it, simply do: * * ./examples/glib-main-loop * * For debugging, do: * * LIBNBD_DEBUG=1 ./examples/glib-main-loop */ #include #include #include #include #include #include #include #include struct NBDSource; typedef void (*connecting_callback_t) (struct NBDSource *); typedef void (*connected_callback_t) (struct NBDSource *); /* This is the derived GSource type. */ struct NBDSource { /* The base type. This MUST be the first element in this struct. */ GSource source; /* The underlying libnbd handle. */ struct nbd_handle *nbd; bool debug; /* true if handle has debug set */ /* The poll file descriptor. We store the value here as well as in * the GSource so we can see if it changes. */ int fd; gpointer tag; /* You can optionally register callbacks to be called when the * handle changes state: * * connected_callback is called once when the handle moves from * connecting to connected (ready) state. */ connected_callback_t connected_callback; bool called_connected_callback; /* Arbitrary pointer for use by caller. */ gpointer user_data; }; /* Print debug statements when debugging is set for the handle. */ #define DEBUG(source, fs, ...) \ do { \ if ((source)->debug) \ fprintf (stderr, "glib: debug: " fs "\n", ## __VA_ARGS__); \ } while (0) /* These are the GSource functions for libnbd handles. */ static inline int events_from_nbd (struct nbd_handle *nbd) { unsigned dir = nbd_aio_get_direction (nbd); int r = 0; if ((dir & LIBNBD_AIO_DIRECTION_READ) != 0) r |= G_IO_IN; if ((dir & LIBNBD_AIO_DIRECTION_WRITE) != 0) r |= G_IO_OUT; return r; } static gboolean prepare (GSource *sp, gint *timeout_) { struct NBDSource *source = (struct NBDSource *)sp; int new_fd; int events; /* The poll file descriptor can change or become invalid at any * time. */ new_fd = nbd_aio_get_fd (source->nbd); if (source->fd != new_fd) { if (source->tag != NULL) { g_source_remove_unix_fd ((GSource *)source, source->tag); source->fd = -1; source->tag = NULL; } if (new_fd >= 0) { source->fd = new_fd; source->tag = g_source_add_unix_fd ((GSource *)source, new_fd, 0); } } if (!source->tag) return FALSE; events = events_from_nbd (source->nbd); g_source_modify_unix_fd ((GSource *)source, source->tag, events); *timeout_ = -1; DEBUG (source, "prepare: events = 0x%x%s%s", events, events & G_IO_IN ? " G_IO_IN" : "", events & G_IO_OUT ? " G_IO_OUT" : ""); if (source->connected_callback && !source->called_connected_callback && nbd_aio_is_ready (source->nbd)) { DEBUG (source, "calling connected_callback"); source->connected_callback (source); source->called_connected_callback = true; } return FALSE; } static gboolean check (GSource *sp) { struct NBDSource *source = (struct NBDSource *)sp; unsigned dir; int revents; if (!source->tag) return FALSE; revents = g_source_query_unix_fd ((GSource *)source, source->tag); dir = nbd_aio_get_direction (source->nbd); DEBUG (source, "check: direction = 0x%x%s%s, revents = 0x%x%s%s", dir, dir & LIBNBD_AIO_DIRECTION_READ ? " READ" : "", dir & LIBNBD_AIO_DIRECTION_WRITE ? " WRITE" : "", revents, revents & G_IO_IN ? " G_IO_IN" : "", revents & G_IO_OUT ? " G_IO_OUT" : ""); if ((revents & G_IO_IN) != 0 && (dir & LIBNBD_AIO_DIRECTION_READ) != 0) return TRUE; if ((revents & G_IO_OUT) != 0 && (dir & LIBNBD_AIO_DIRECTION_WRITE) != 0) return TRUE; return FALSE; } static gboolean dispatch (GSource *sp, GSourceFunc callback, gpointer user_data) { struct NBDSource *source = (struct NBDSource *)sp; int revents; int r; revents = g_source_query_unix_fd ((GSource *)source, source->tag); DEBUG (source, "dispatch: revents = 0x%x%s%s", revents, revents & G_IO_IN ? " G_IO_IN" : "", revents & G_IO_OUT ? " G_IO_OUT" : ""); r = 0; if ((revents & G_IO_IN) != 0) r = nbd_aio_notify_read (source->nbd); else if ((revents & G_IO_OUT) != 0) r = nbd_aio_notify_write (source->nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); return G_SOURCE_REMOVE; } return G_SOURCE_CONTINUE; } static void finalize (GSource *sp) { struct NBDSource *source = (struct NBDSource *)sp; DEBUG (source, "finalize"); assert (nbd_aio_in_flight (source->nbd) == 0); assert (nbd_aio_peek_command_completed (source->nbd) == -1); nbd_close (source->nbd); } GSourceFuncs nbd_source_funcs = { .prepare = prepare, .check = check, .dispatch = dispatch, .finalize = finalize, }; /* Create a libnbd GSource from a libnbd handle. * * Note that the return value is also a ‘GSource *’, you just have to * cast the return value if you need a GSource pointer. */ static struct NBDSource * create_libnbd_gsource (struct nbd_handle *nbd) { struct NBDSource *source; source = (struct NBDSource *)g_source_new (&nbd_source_funcs, sizeof *source); source->nbd = nbd; source->debug = nbd_get_debug (nbd); source->fd = -1; return source; } /*----------------------------------------------------------------------*/ /* The rest of this file is an example showing how to use the GSource * defined above to control two nbdkit subprocesses, copying from one * to the other in parallel. */ /* Source and destination nbdkit instances. */ static struct NBDSource *gssrc, *gsdest; #define SIZE (1024*1024*1024) static const char *src_args[] = { "nbdkit", "-s", "--exit-with-parent", "-r", "pattern", "size=1G", NULL }; static const char *dest_args[] = { "nbdkit", "-s", "--exit-with-parent", "memory", "size=1G", NULL }; /* The list of buffers waiting to be written. Note that the source * server can answer requests out of order so these buffers may not be * sorted by offset. */ #define MAX_BUFFERS 16 #define BUFFER_SIZE 65536 enum buffer_state { BUFFER_UNUSED = 0, BUFFER_READING, BUFFER_READ_COMPLETED, BUFFER_WRITING, }; struct buffer { uint64_t offset; enum buffer_state state; char *data; }; static struct buffer buffers[MAX_BUFFERS]; static size_t nr_buffers; static bool finished, reader_paused; static GMainLoop *loop; static void connected (struct NBDSource *source); static gboolean read_data (gpointer user_data); static int finished_read (void *vp, int *error); static gboolean write_data (gpointer user_data); static int finished_write (void *vp, int *error); int main (int argc, char *argv[]) { struct nbd_handle *src, *dest; GMainContext *loopctx = NULL; /* Create the main loop. */ loop = g_main_loop_new (loopctx, FALSE); /* Create the two NBD handles and nbdkit instances. */ src = nbd_create (); if (!src) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } dest = nbd_create (); if (!dest) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Create the GSource main loop sources from each handle. */ gssrc = create_libnbd_gsource (src); gsdest = create_libnbd_gsource (dest); loopctx = g_main_loop_get_context (loop); g_source_attach ((GSource *)gssrc, loopctx); g_source_attach ((GSource *)gsdest, loopctx); /* Make sure we get called back when each handle connects. */ gssrc->connected_callback = connected; gsdest->connected_callback = connected; /* Asynchronously start each handle connecting. */ if (nbd_aio_connect_command (src, (char **)src_args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_connect_command (dest, (char **)dest_args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run the main loop until quit. */ g_main_loop_run (loop); exit (EXIT_SUCCESS); } /* This is called back when either handle becomes connected. By * counting the number of times this happens (there are two handles) * we can tell when both handles have finished connecting. */ static void connected (struct NBDSource *source) { static int count = 0; count++; if (count == 2) { DEBUG (source, "both handles are connected"); /* Now that both handles are connected, we can begin copying. * Register an idle handler that will repeatedly read from the * source. */ g_idle_add (read_data, NULL); } } /* This idle callback reads data from the source nbdkit until the ring * is full. */ static gboolean read_data (gpointer user_data) { static uint64_t posn = 0; size_t i; if (gssrc == NULL) return FALSE; /* Finished reading from the source nbdkit? */ if (posn >= SIZE) { DEBUG (gssrc, "read_data: finished reading from source"); finished = true; return FALSE; } /* Find a free buffer. */ for (i = 0; i < MAX_BUFFERS; ++i) if (buffers[i].state == BUFFER_UNUSED) goto found; /* If too many read requests are in flight, return FALSE so this * idle callback is unregistered. It will be registered by the * write callback when nr_buffers decreases. */ assert (nr_buffers == MAX_BUFFERS); DEBUG (gssrc, "read_data: buffer full, pausing reads from source"); reader_paused = true; return FALSE; found: /* Begin reading into the new buffer. */ assert (buffers[i].data == NULL); buffers[i].data = g_new (char, BUFFER_SIZE); buffers[i].state = BUFFER_READING; buffers[i].offset = posn; nr_buffers++; posn += BUFFER_SIZE; if (nbd_aio_pread (gssrc->nbd, buffers[i].data, BUFFER_SIZE, buffers[i].offset, (nbd_completion_callback) { .callback = finished_read, .user_data = &buffers[i] }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } return TRUE; } /* This callback is called from libnbd when any read command finishes. */ static int finished_read (void *vp, int *error) { struct buffer *buffer = vp; if (gssrc == NULL) return 1; /* Nothing we can do, auto-retire the callback */ if (*error) { fprintf (stderr, "finished_read: read failed: %s\n", strerror (*error)); exit (EXIT_FAILURE); } DEBUG (gssrc, "finished_read: read completed"); assert (buffer->state == BUFFER_READING); buffer->state = BUFFER_READ_COMPLETED; /* Create a writer idle handler. */ g_idle_add (write_data, buffer); return 1; } /* This idle callback schedules a write. */ static gboolean write_data (gpointer user_data) { struct buffer *buffer = user_data; if (gsdest == NULL) return FALSE; assert (buffer->state == BUFFER_READ_COMPLETED); buffer->state = BUFFER_WRITING; if (nbd_aio_pwrite (gsdest->nbd, buffer->data, BUFFER_SIZE, buffer->offset, (nbd_completion_callback) { .callback = finished_write, .user_data = buffer }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* We always unregister this idle handler because the read side * creates a new idle handler for every buffer that has to be * written. */ return FALSE; } /* This callback is called from libnbd when any write command finishes. */ static int finished_write (void *vp, int *error) { struct buffer *buffer = vp; if (gsdest == NULL) return 1; /* Nothing we can do, auto-retire the callback */ if (*error) { fprintf (stderr, "finished_write: write failed: %s\n", strerror (*error)); exit (EXIT_FAILURE); } DEBUG (gsdest, "finished_write: write completed"); assert (buffer->state == BUFFER_WRITING); g_free (buffer->data); buffer->data = NULL; buffer->state = BUFFER_UNUSED; nr_buffers--; /* If the number of buffers was MAX_BUFFERS and has now gone down to * MAX_BUFFERS-1 then we need to restart the read handler. */ if (nr_buffers == MAX_BUFFERS-1 && reader_paused) { DEBUG (gsdest, "finished_write: restarting reader"); g_idle_add (read_data, NULL); reader_paused = false; } /* If the reader has finished and there are no more buffers then we * have done. */ if (finished && nr_buffers == 0) { DEBUG (gsdest, "finished_write: all finished"); g_source_remove (g_source_get_id ((GSource *)gssrc)); g_source_unref ((GSource *)gssrc); gssrc = NULL; g_source_remove (g_source_get_id ((GSource *)gsdest)); g_source_unref ((GSource *)gsdest); gsdest = NULL; g_main_loop_quit (loop); } return 1; } libnbd-1.20.3/examples/list-exports.c0000644000175000017500000000761014616437241013163 /* This example shows how to list NBD exports. * * To test this with qemu-nbd: * $ qemu-nbd -x "hello" -t -k /tmp/sock disk.img * $ ./run examples/list-exports /tmp/sock * [0] hello * Which export to connect to (-1 to quit)? 0 * Connecting to hello ... * /tmp/sock: hello: size = 2048 bytes * * To test this with nbdkit (requires 1.22): * $ nbdkit -U /tmp/sock sh - <<\EOF * case $1 in * list_exports) echo NAMES; echo foo; echo foobar ;; * open) echo "$3" ;; * get_size) echo "$2" | wc -c ;; * pread) echo "$2" | dd bs=1 skip=$4 count=$3 ;; * *) exit 2 ;; * esac * EOF * $ ./run examples/list-exports /tmp/sock * [0] foo * [1] foobar * Which export to connect to (-1 to quit)? 1 * Connecting to foobar ... * /tmp/sock: foobar: size = 7 bytes */ #include #include #include #include #include #include #include #include struct export_list { int i; char **names; }; /* Callback function for nbd_opt_list */ static int list_one (void *opaque, const char *name, const char *description) { struct export_list *l = opaque; char **names; printf ("[%d] %s\n", l->i, name); if (*description) printf (" (%s)\n", description); names = realloc (l->names, (l->i + 1) * sizeof *names); if (!names) { perror ("realloc"); exit (EXIT_FAILURE); } names[l->i] = strdup (name); if (!names[l->i]) { perror ("strdup"); exit (EXIT_FAILURE); } l->names = names; l->i++; return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int i; const char *name; int64_t size; struct export_list list = { 0 }; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set opt mode. */ nbd_set_opt_mode (nbd, true); /* Connect to the NBD server over a * Unix domain socket. If we did not * end up in option mode, then a * listing is not possible. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_negotiating (nbd)) { fprintf (stderr, "Server does not support " "listing exports.\n"); exit (EXIT_FAILURE); } /* Print the export list. */ if (nbd_opt_list (nbd, (nbd_list_callback) { .callback = list_one, .user_data = &list, }) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Display the list of exports. */ printf ("Which export to connect to? "); if (scanf ("%d", &i) != 1) exit (EXIT_FAILURE); if (i == -1) { if (nbd_opt_abort (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } if (i < 0 || i >= list.i) { fprintf (stderr, "index %d out of range", i); exit (EXIT_FAILURE); } name = list.names[i]; printf ("Connecting to %s ...\n", name); /* Resume connecting to the chosen export. */ if (nbd_set_export_name (nbd, name) == -1 || nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_ready (nbd)) { fprintf (stderr, "server closed early\n"); exit (EXIT_FAILURE); } /* Read the size in bytes and print it. */ size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("%s: %s: size = %" PRIi64 " bytes\n", argv[1], name, size); /* Close the libnbd handle. */ nbd_close (nbd); for (i = 0; i < list.i; i++) free (list.names[i]); free (list.names); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/open-qcow2.c0000644000175000017500000000246014525371754012503 /* This example shows how to use qemu-nbd * to open a local qcow2 file. */ #include #include #include #include int main (int argc, const char *argv[]) { const char *filename; struct nbd_handle *nbd; char buf[512]; FILE *fp; if (argc != 2) { fprintf (stderr, "open-qcow2 file.qcow2\n"); exit (EXIT_FAILURE); } filename = argv[1]; /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run qemu-nbd as a subprocess using * systemd socket activation. */ char *args[] = { "qemu-nbd", "-f", "qcow2", (char *)filename, NULL }; if (nbd_connect_systemd_socket_activation (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Read the first sector and print it. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } fp = popen ("hexdump -C", "w"); if (fp == NULL) { perror ("popen: hexdump"); exit (EXIT_FAILURE); } fwrite (buf, sizeof buf, 1, fp); pclose (fp); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/reads-and-writes.c0000644000175000017500000000477614616437241013671 /* This example shows how to do synchronous reads * and writes randomly over the first megabyte of an * NBD server. Note this will destroy any existing * content on the NBD server. * * To test it with nbdkit and a RAM disk: * * nbdkit -U - memory 1M \ * --run './simple-reads-and-writes $unixsocket' */ #include #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; size_t i; int64_t exportsize; uint64_t offset; srand (time (NULL)); if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Get the size of the disk and check * it's large enough. */ exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (exportsize >= sizeof buf); /* Check that the server is writable. */ if (nbd_is_read_only (nbd) == 1) { fprintf (stderr, "%s: " "error: this NBD export is read-only\n", argv[0]); exit (EXIT_FAILURE); } for (i = 0; i < sizeof buf; ++i) buf[i] = rand (); /* 1000 writes. */ for (i = 0; i < 1000; ++i) { offset = rand () % (exportsize - sizeof buf); if (nbd_pwrite (nbd, buf, sizeof buf, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* 1000 reads and writes. */ for (i = 0; i < 1000; ++i) { offset = rand () % (exportsize - sizeof buf); if (nbd_pread (nbd, buf, sizeof buf, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } offset = rand () % (exportsize - sizeof buf); if (nbd_pwrite (nbd, buf, sizeof buf, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* Sends a graceful shutdown to the server. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/server-flags.c0000644000175000017500000000452114616437241013104 /* This example shows how to connect to an NBD * server and print the export flags. * * You can test it with nbdkit like this: * * nbdkit -U - memory 1M \ * --run './server-flags $unixsocket' */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *str; int flag; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request full information. */ #if LIBNBD_HAVE_NBD_SET_FULL_INFO /* Added in 1.4 */ if (nbd_set_full_info (nbd, true) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to the NBD server over a * Unix domain socket. */ if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* See if the server provided extra details, * using functions added in 1.4 */ #if LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION str = nbd_get_canonical_export_name (nbd); if (str) printf ("canonical_name = %s\n", str); free (str); str = nbd_get_export_description (nbd); if (str) printf ("description = %s\n", str); free (str); #endif /* Read and print the flags. */ #define PRINT_FLAG(flag_fn) \ flag = flag_fn (nbd); \ if (flag == -1) { \ fprintf (stderr, "%s\n", nbd_get_error ()); \ exit (EXIT_FAILURE); \ } \ printf (#flag_fn " = %s\n", \ flag ? "true" : "false"); PRINT_FLAG (nbd_can_cache); PRINT_FLAG (nbd_can_df); PRINT_FLAG (nbd_can_flush); PRINT_FLAG (nbd_can_fua); PRINT_FLAG (nbd_can_multi_conn); PRINT_FLAG (nbd_can_trim); PRINT_FLAG (nbd_can_zero); #if LIBNBD_HAVE_NBD_CAN_FAST_ZERO /* Added in 1.2 */ PRINT_FLAG (nbd_can_fast_zero); #endif #if LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD /* Added in 1.18 */ PRINT_FLAG (nbd_can_block_status_payload); #endif PRINT_FLAG (nbd_is_read_only); PRINT_FLAG (nbd_is_rotational); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/strict-structured-reads.c0000644000175000017500000001674414616437241015324 /* Example usage with qemu-nbd: * * sock=`mktemp -u` * qemu-nbd -f $format -k $sock -r image * ./strict-structured-reads $sock * * Example usage with nbdkit (but less useful while nbdkit can't send holes): * * nbdkit -U- sparse-random 1G --run './strict-structured-reads "$unixsocket"' * * This will perform read randomly over the image and check that all * structured replies comply with the NBD spec (chunks may be out of * order or interleaved, but no read succeeds unless chunks cover the * entire region, with no overlapping or zero-length chunks). */ #include #include #include #include #include #include #include #include #include /* A linked list of ranges still not seen. */ struct range { uint64_t first; uint64_t last; struct range *next; }; /* Per-read data. */ struct data { uint64_t offset; size_t count; uint32_t flags; size_t chunks; struct range *remaining; }; #define MAX_BUF (2 * 1024 * 1024) static char buf[MAX_BUF]; /* Various statistics */ static int total_data_chunks; static int64_t total_data_bytes; static int total_hole_chunks; static int64_t total_hole_bytes; static int total_chunks; static int total_df_reads; static int total_reads; static int64_t total_bytes; static int total_success; static int read_chunk (void *opaque, const void *bufv, size_t count, uint64_t offset, unsigned status, int *error) { struct data *data = opaque; struct range *r, **prev; /* libnbd guarantees this: */ assert (offset >= data->offset); assert (offset + count <= data->offset + data->count); switch (status) { case LIBNBD_READ_DATA: total_data_chunks++; total_data_bytes += count; break; case LIBNBD_READ_HOLE: total_hole_chunks++; total_hole_bytes += count; break; case LIBNBD_READ_ERROR: assert (count == 0); count = 1; /* Ensure no further chunks visit that offset */ break; default: goto error; } data->chunks++; if (count == 0) { fprintf (stderr, "buggy server: chunk must have non-zero size\n"); goto error; } /* Find element in remaining, or the server is in error */ for (prev = &data->remaining, r = *prev; r; prev = &r->next, r = r->next) { if (offset >= r->first) break; } if (r == NULL || offset + count > r->last) { /* we fail to detect double errors reported at the same offset, * but at least the read is already going to fail. */ if (status == LIBNBD_READ_ERROR) return 0; fprintf (stderr, "buggy server: chunk with overlapping range\n"); goto error; } /* Resize or split r to track new remaining bytes */ if (offset == r->first) { if (offset + count == r->last) { *prev = r->next; free (r); } else r->first += count; } else if (offset + count == r->last) { r->last -= count; } else { struct range *n = malloc (sizeof *n); assert (n); n->next = r->next; r->next = n; n->last = r->last; r->last = offset - r->first; n->first = offset + count; } return 0; error: *error = EPROTO; return -1; } static int read_verify (void *opaque, int *error) { int ret = 0; struct data *data = opaque; ret = -1; total_reads++; total_chunks += data->chunks; if (*error) goto cleanup; assert (data->chunks > 0); if (data->flags & LIBNBD_CMD_FLAG_DF) { total_df_reads++; if (data->chunks > 1) { fprintf (stderr, "buggy server: too many chunks for DF flag\n"); *error = EPROTO; goto cleanup; } } if (data->remaining && !*error) { fprintf (stderr, "buggy server: not enough chunks on success\n"); *error = EPROTO; goto cleanup; } total_bytes += data->count; total_success++; ret = 0; cleanup: while (data->remaining) { struct range *r = data->remaining; data->remaining = r->next; free (r); } return ret; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; size_t i; int64_t exportsize; int64_t maxsize = MAX_BUF; srand (time (NULL)); if (argc != 2) { fprintf (stderr, "%s socket|uri\n", argv[0]); exit (EXIT_FAILURE); } nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (strstr (argv[1], "://")) { if (nbd_connect_uri (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } else if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (exportsize < 512) { fprintf (stderr, "image is too small for useful testing\n"); exit (EXIT_FAILURE); } if (exportsize <= maxsize) maxsize = exportsize - 1; /* Queue up 1000 parallel reads. We are reusing the same buffer, * which is not safe in real life, but okay here because we aren't * validating contents, only server behavior. */ for (i = 0; i < 1000; ++i) { uint32_t flags = 0; struct data *d = malloc (sizeof *d); struct range *r = malloc (sizeof *r); uint64_t offset; nbd_chunk_callback chunk_callback = { .callback = read_chunk, .user_data = d }; nbd_completion_callback completion_callback = { .callback = read_verify, .user_data = d, .free = free }; assert (d && r); offset = rand () % (exportsize - maxsize); if (rand () & 1) flags = LIBNBD_CMD_FLAG_DF; *r = (struct range) { .first = offset, .last = offset + maxsize, }; *d = (struct data) { .offset = offset, .count = maxsize, .flags = flags, .remaining = r, }; if (nbd_aio_pread_structured (nbd, buf, sizeof buf, offset, chunk_callback, completion_callback, flags) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } while (nbd_aio_in_flight (nbd) > 0) { int64_t cookie = nbd_aio_peek_command_completed (nbd); if (cookie == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (cookie == 0) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } else nbd_aio_command_completed (nbd, cookie); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } printf ("traffic:\n"); printf (" bytes sent: %10" PRIu64 "\n", nbd_stats_bytes_sent (nbd)); printf (" bytes received: %10" PRIu64 "\n", nbd_stats_bytes_received (nbd)); printf (" chunks sent: %10" PRIu64 "\n", nbd_stats_chunks_sent (nbd)); printf (" chunks received: %10" PRIu64 "\n", nbd_stats_chunks_received (nbd)); printf ("totals:\n"); printf (" data chunks: %10d\n", total_data_chunks); printf (" data bytes: %10" PRId64 "\n", total_data_bytes); printf (" hole chunks: %10d\n", total_hole_chunks); printf (" hole bytes: %10" PRId64 "\n", total_hole_bytes); printf (" all chunks: %10d\n", total_chunks); printf (" df reads: %10d\n", total_df_reads); printf (" reads: %10d\n", total_reads); printf (" bytes read: %10" PRId64 "\n", total_bytes); printf (" compliant: %10d\n", total_success); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/examples/threaded-reads-and-writes.c0000644000175000017500000002134714525371754015445 /* Example usage with nbdkit: * * nbdkit -U - memory 100M --run './threaded-reads-and-writes $unixsocket' * * This will read and write randomly over the first megabyte of the * plugin using multi-conn, multiple threads and multiple requests in * flight on each thread. * * To run it against a remote server over TCP: * * ./threaded-reads-and-writes hostname port * or * ./threaded-reads-and-writes nbd://hostname:port */ #include #include #include #include #include #include #include #include #include #include #include #include static int64_t exportsize; /* Number of simultaneous connections to the NBD server. This is also * the number of threads, because each thread manages one connection. * Note that some servers only support a limited number of * simultaneous connections, and/or have a configurable thread pool * internally, and if you exceed those limits then something will * break. */ #define NR_MULTI_CONN 8 /* Number of commands that can be "in flight" at the same time on each * connection. (Therefore the total number of requests in flight may * be up to NR_MULTI_CONN * MAX_IN_FLIGHT). See libnbd(3) section * "Issuing multiple in-flight requests". */ #define MAX_IN_FLIGHT 64 /* The size of large reads and writes, must be > 512. */ #define BUFFER_SIZE (1024*1024) /* Number of commands we issue (per thread). */ #define NR_CYCLES 10000 struct thread_status { size_t i; /* Thread index, 0 .. NR_MULTI_CONN-1 */ int argc; /* Command line parameters. */ char **argv; int status; /* Return status. */ unsigned requests; /* Total number of requests made. */ unsigned most_in_flight; /* Most requests seen in flight. */ }; static void *start_thread (void *arg); int main (int argc, char *argv[]) { struct nbd_handle *nbd; pthread_t threads[NR_MULTI_CONN]; struct thread_status status[NR_MULTI_CONN]; size_t i; int err; unsigned requests, most_in_flight, errors; srand (time (NULL)); if (argc < 2 || argc > 3) { fprintf (stderr, "%s uri | socket | hostname port\n", argv[0]); exit (EXIT_FAILURE); } nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect first to check if the server supports writes and multi-conn. */ if (argc == 2) { if (strstr (argv[1], "://")) { if (nbd_connect_uri (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } else if (nbd_connect_unix (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } else { if (nbd_connect_tcp (nbd, argv[1], argv[2]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } else if (exportsize <= BUFFER_SIZE) { fprintf (stderr, "export too small, must be larger than %d\n", BUFFER_SIZE); exit (EXIT_FAILURE); } if (nbd_is_read_only (nbd) == 1) { fprintf (stderr, "%s: error: this NBD export is read-only\n", argv[0]); exit (EXIT_FAILURE); } #if NR_MULTI_CONN > 1 if (nbd_can_multi_conn (nbd) == 0) { fprintf (stderr, "%s: error: " "this NBD export does not support multi-conn\n", argv[0]); exit (EXIT_FAILURE); } #endif nbd_close (nbd); /* Start the worker threads, one per connection. */ for (i = 0; i < NR_MULTI_CONN; ++i) { status[i].i = i; status[i].argc = argc; status[i].argv = argv; status[i].status = 0; status[i].requests = 0; status[i].most_in_flight = 0; err = pthread_create (&threads[i], NULL, start_thread, &status[i]); if (err != 0) { errno = err; perror ("pthread_create"); exit (EXIT_FAILURE); } } /* Wait for the threads to exit. */ errors = 0; requests = 0; most_in_flight = 0; for (i = 0; i < NR_MULTI_CONN; ++i) { err = pthread_join (threads[i], NULL); if (err != 0) { errno = err; perror ("pthread_join"); exit (EXIT_FAILURE); } if (status[i].status != 0) { fprintf (stderr, "thread %zu failed with status %d\n", i, status[i].status); errors++; } requests += status[i].requests; if (status[i].most_in_flight > most_in_flight) most_in_flight = status[i].most_in_flight; } /* Make sure the number of requests that were required matches what * we expect. */ assert (requests == NR_MULTI_CONN * NR_CYCLES); printf ("most requests seen in flight = %u (per thread) " "vs MAX_IN_FLIGHT = %d\n", most_in_flight, MAX_IN_FLIGHT); exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE); } static void * start_thread (void *arg) { struct nbd_handle *nbd; struct pollfd fds[1]; struct thread_status *status = arg; char *buf; size_t i, j; uint64_t offset; int64_t cookie; int64_t cookies[MAX_IN_FLIGHT]; size_t in_flight; /* counts number of requests in flight */ unsigned dir; int r, cmd; size_t size; assert (512 < BUFFER_SIZE); buf = malloc (BUFFER_SIZE); if (buf == NULL) { perror ("malloc"); exit (EXIT_FAILURE); } nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (status->argc == 2) { if (strstr (status->argv[1], "://")) { if (nbd_connect_uri (nbd, status->argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } else if (nbd_connect_unix (nbd, status->argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } else { if (nbd_connect_tcp (nbd, status->argv[1], status->argv[2]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } for (i = 0; i < BUFFER_SIZE; ++i) buf[i] = rand (); /* Issue commands. */ in_flight = 0; i = NR_CYCLES; while (i > 0 || in_flight > 0) { if (nbd_aio_is_dead (nbd) || nbd_aio_is_closed (nbd)) { fprintf (stderr, "thread %zu: connection is dead or closed\n", status->i); goto error; } /* If we want to issue another request, do so. Note that we reuse * the same buffer for multiple in-flight requests. It doesn't * matter here because we're just trying to write random stuff, * but that would be Very Bad in a real application. * Simulate a mix of large and small requests. */ while (i > 0 && in_flight < MAX_IN_FLIGHT) { size = (rand () & 1) ? BUFFER_SIZE : 512; offset = rand () % (exportsize - size); cmd = rand () & 1; if (cmd == 0) cookie = nbd_aio_pwrite (nbd, buf, size, offset, NBD_NULL_COMPLETION, 0); else cookie = nbd_aio_pread (nbd, buf, size, offset, NBD_NULL_COMPLETION, 0); if (cookie == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } cookies[in_flight] = cookie; i--; in_flight++; if (in_flight > status->most_in_flight) status->most_in_flight = in_flight; } fds[0].fd = nbd_aio_get_fd (nbd); fds[0].events = 0; fds[0].revents = 0; dir = nbd_aio_get_direction (nbd); if ((dir & LIBNBD_AIO_DIRECTION_READ) != 0) fds[0].events |= POLLIN; if ((dir & LIBNBD_AIO_DIRECTION_WRITE) != 0) fds[0].events |= POLLOUT; if (poll (fds, 1, -1) == -1) { perror ("poll"); goto error; } if ((dir & LIBNBD_AIO_DIRECTION_READ) != 0 && (fds[0].revents & POLLIN) != 0) nbd_aio_notify_read (nbd); else if ((dir & LIBNBD_AIO_DIRECTION_WRITE) != 0 && (fds[0].revents & POLLOUT) != 0) nbd_aio_notify_write (nbd); /* If a command is ready to retire, retire it. */ for (j = 0; j < in_flight; ++j) { r = nbd_aio_command_completed (nbd, cookies[j]); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } if (r) { memmove (&cookies[j], &cookies[j+1], sizeof (cookies[0]) * (in_flight - j - 1)); j--; in_flight--; status->requests++; } } } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); printf ("thread %zu: finished OK\n", status->i); free (buf); status->status = 0; pthread_exit (status); error: free (buf); fprintf (stderr, "thread %zu: failed\n", status->i); status->status = -1; pthread_exit (status); } libnbd-1.20.3/examples/userfault-map.c0000644000175000017500000001715014525371754013300 /* This example shows how to memory map a drive using userfaultfd(2) * to map in pages which are read from the remote disk using libnbd. * * Because it is an example, we just compute a simple histogram over * the data to prove it works, but a real program could do something * else with the memory-mapped drive. A real program also ought to * handle userfaultfd events in parallel, and use nbd_aio_* operations * to better utilise the NBD socket. * * It requires Linux >= 4.11. On other platforms it will print an * error instead. * * To try out this example with nbdkit: * * nbdkit -U - random 1M --run './userfault-map $uri' * * (set LIBNBD_DEBUG=1 for more detail) */ #include "config.h" /* For HAVE_* macros below */ #include #include #include #include #include #include #ifdef HAVE_SYS_SYSCALL_H #include #endif #if !defined(HAVE_SYS_SYSCALL_H) || \ !defined(HAVE_LINUX_USERFAULTFD_H) || \ !defined(__NR_userfaultfd) int main (int argc, char *argv[]) { fprintf (stderr, "%s: This program requires Linux >= 4.11\n", argv[0]); exit (EXIT_FAILURE); } #else /* Here we can assume this is Linux so we don't need to use autoconf * portability macros. */ #include #include #include #include #include #include #include #include #include static struct nbd_handle *nbd; /* libnbd handle. */ static int fd; /* Userfault file descriptor. */ static long page_size; /* Machine page size. */ static int64_t size; /* Size in bytes. */ static int64_t size_aligned; /* Rounded up to next page size boundary. */ static void *memory; /* Memory mapped drive. */ /* Background thread which handles userfaultfd events. */ static pthread_t thread; static pthread_barrier_t barrier; static void *handle_event (void *); static void histogram (char *, size_t); int main (int argc, char *argv[]) { struct uffdio_api uffdio_api; struct uffdio_register uffdio_register; int err; if (argc != 2) { fprintf (stderr, "%s NBDURI\n", argv[0]); exit (EXIT_FAILURE); } /* Check we can use userfaultfd. */ page_size = sysconf (_SC_PAGESIZE); if (page_size == -1) { perror ("sysconf"); exit (EXIT_FAILURE); } assert (page_size > 0); fd = syscall (__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK); if (fd == -1) { perror ("userfaultfd"); exit (EXIT_FAILURE); } uffdio_api.api = UFFD_API; uffdio_api.features = 0; if (ioctl (fd, UFFDIO_API, &uffdio_api) == -1) { perror ("ioctl: UFFDIO_API"); exit (EXIT_FAILURE); } if (uffdio_api.api != UFFD_API) { fprintf (stderr, "%s: unsupported userfaultfd API %lld != %lld\n", argv[0], uffdio_api.api, UFFD_API); exit (EXIT_FAILURE); } /* Create the libnbd handle. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_uri (nbd, argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } size_aligned = (size + page_size - 1) & -page_size; printf ("%s: connected to the NBD server\n", argv[0]); printf ("remote size (bytes): %" PRIi64 "\n", size); printf ("allocation size (page aligned): %" PRIi64 "\n", size_aligned); fflush (stdout); /* mmap enough anonymous memory. */ memory = mmap (NULL, size_aligned, PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); if (memory == MAP_FAILED) { perror ("mmap"); exit (EXIT_FAILURE); } /* Register the memory with userfaultfd. */ uffdio_register.range.start = (unsigned long) memory; uffdio_register.range.len = size_aligned; uffdio_register.mode = UFFDIO_REGISTER_MODE_MISSING; if (ioctl (fd, UFFDIO_REGISTER, &uffdio_register) == -1) { perror ("ioctl: UFFDIO_REGISTER"); exit (EXIT_FAILURE); } #if 0 if ((uffdio_register.ioctls & UFFD_API_RANGE_IOCTLS) != UFFD_API_RANGE_IOCTLS) { fprintf (stderr, "%s: unexpected userfaultfd ioctl range returned\n", argv[0]); exit (EXIT_FAILURE); } #endif /* We need a background thread to handle userfaultfd events. */ err = pthread_barrier_init (&barrier, NULL, 2); if (err != 0) { errno = err; perror ("pthread_barrier_init"); exit (EXIT_FAILURE); } err = pthread_create (&thread, NULL, handle_event, NULL); if (err != 0) { errno = err; perror ("pthread_create"); exit (EXIT_FAILURE); } /* Wait for the background thread to start. */ pthread_barrier_wait (&barrier); pthread_barrier_destroy (&barrier); /* Prove you can pass the pointer to another function that works on * memory buffers. */ printf ("Calculating byte histogram over drive ...\n"); fflush (stdout); histogram (memory, size); /* Destroy the background thread. */ printf ("Clean up and exit ...\n"); fflush (stdout); pthread_cancel (thread); /* Close the libnbd handle. */ nbd_close (nbd); exit (EXIT_SUCCESS); } static void * handle_event (void *vp) { char *buf; int oldstate; pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, &oldstate); buf = malloc (page_size); if (buf == NULL) { perror ("malloc"); exit (EXIT_FAILURE); } /* Ready to serve requests. */ pthread_barrier_wait (&barrier); for (;;) { struct uffd_msg msg; struct pollfd pollfd[1]; int r; uintptr_t addr; uint64_t offset; size_t len; struct uffdio_copy uffdio_copy; pollfd[0].fd = fd; pollfd[0].events = POLLIN; r = poll (pollfd, 1, -1); if (r == -1) { perror ("poll"); exit (EXIT_FAILURE); } if (r == 0) continue; if ((pollfd[0].revents & POLLERR) != 0) { fprintf (stderr, "poll: unexpected POLLERR returned\n"); exit (EXIT_FAILURE); } if ((pollfd[0].revents & POLLIN) != 0) { r = read (fd, &msg, sizeof msg); if (r == -1) { if (errno == EAGAIN || errno == EWOULDBLOCK) continue; perror ("read"); exit (EXIT_FAILURE); } if (r != sizeof msg) { fprintf (stderr, "read: unexpected size of message\n"); exit (EXIT_FAILURE); } if (msg.event & UFFD_EVENT_PAGEFAULT) { /* Finally, handle the page fault ... */ addr = msg.arg.pagefault.address; /* Read the data from the remote server. */ offset = addr - (uintptr_t) memory; len = page_size; if (offset + page_size > size) { len -= offset + page_size - size; memset (buf, 0, page_size); } if (nbd_pread (nbd, buf, len, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Atomically write the result to the memory map. We can't * use memcpy here as explained in AA's talk. */ uffdio_copy.src = (uintptr_t)buf; uffdio_copy.dst = addr; uffdio_copy.len = page_size; uffdio_copy.mode = 0; if (ioctl (fd, UFFDIO_COPY, &uffdio_copy) == -1) { perror ("ioctl: UFFDIO_COPY"); exit (EXIT_FAILURE); } } } } } static void histogram (char *buf, size_t len) { size_t i; int count[256] = { 0 }; for (i = 0; i < len; ++i) count[(int)buf[i]]++; printf ("number of zero bytes found in input = %d / %zu\n", count[0], len); } #endif /* platform supports userfaultfd */ libnbd-1.20.3/examples/LICENSE-FOR-EXAMPLES0000644000175000017500000000342014525371754013207 The files in the examples/ directory are licensed under this very permissive BSD license. This means that you can copy, use, adapt and modify them without any significant restrictions. You can also combine them with proprietary code or include them in code that is distributed under other open source licenses. ---------------------------------------------------------------------- libnbd examples Copyright Red Hat Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Red Hat nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. 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SysV at least) may be exceeded. .NOEXPORT: libnbd-1.20.3/valgrind/glibc.suppressions0000644000175000017500000000252414525371754014115 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # bindtextdomain leaks. { glibc_1 Memcheck:Leak ... fun:bindtextdomain } # pthread_exit. { glibc_2a Memcheck:Leak ... fun:pthread_exit } { glibc_2b Memcheck:Leak ... fun:dlopen@@* } # Allow thread-local storage from pthread_create to leak. { glibc_3 Memcheck:Leak fun:calloc ... fun:_dl_allocate_tls } # Same as above, but for glibc 2.34. { glibc_4 Memcheck:Leak fun:malloc ... fun:allocate_dtv_entry } # This is another leak from pthread_create added in glibc 2.34. { glibc_5 Memcheck:Leak fun:malloc ... fun:__printf_chk } libnbd-1.20.3/valgrind/gnutls.suppressions0000644000175000017500000000163414525371754014352 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # gnutls_x509_trust_list_add_system_trust leaks everything. { gnutls_1 Memcheck:Leak ... fun:gnutls_x509_trust_list_add_system_trust } libnbd-1.20.3/valgrind/libnbd.suppressions0000644000175000017500000000213514525371754014265 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # It's not properly guaranteed that the per-thread error context is or # can always be freed in multi-threaded programs that call exit before # all threads have shut down (even if all handles are closed). So # suppress this error. { libnbd_1 Memcheck:Leak fun:calloc ... fun:nbd_internal_set_error_context fun:nbd_create } libnbd-1.20.3/valgrind/ocaml.suppressions0000644000175000017500000000435014525371754014127 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # OCaml, by design, doesn't bother to free the major heap before # calling exit. Ignore that leak. { ocaml_heap_leak Memcheck:Leak ... fun:caml_alloc_for_heap } # On the other hand, these seem to be a real bugs in OCaml: { ocaml_heap_leak_2 Memcheck:Leak fun:malloc fun:caml_thread_new_descriptor fun:caml_thread_new } { ocaml_heap_leak_3 Memcheck:Leak fun:malloc fun:caml_thread_new_descriptor fun:caml_thread_initialize } { ocaml_heap_leak_4 Memcheck:Leak ... fun:pthread_create* ... fun:caml_thread_new } { ocaml_heap_leak_5 Memcheck:Leak fun:malloc fun:caml_stat_alloc } { ocaml_heap_leak_6 Memcheck:Leak fun:malloc ... fun:caml_build_primitive_table } # Add for OCaml 4.10. { ocaml_heap_leak_7 Memcheck:Leak fun:malloc ... fun:caml_init_domain } { ocaml_heap_leak_8 Memcheck:Leak fun:malloc ... fun:caml_init_atom_table } # This one seems to be a real leak, starting in OCaml 4.13 { caml_setup_stack_overflow_detection Memcheck:Leak ... fun:caml_setup_stack_overflow_detection } # Valgrind bug affecting OCaml 4.14 # https://bugs.kde.org/show_bug.cgi?id=455711 { caml_terminate_signals_uninitialized_sigaltstack Memcheck:Param sigaltstack(ss) fun:sigaltstack fun:caml_terminate_signals } { caml_stop_stack_overflow_detection_uninitialized_sigaltstack Memcheck:Param sigaltstack(ss) fun:sigaltstack fun:caml_stop_stack_overflow_detection } libnbd-1.20.3/tests/0000755000175000017500000000000014675532654007753 5libnbd-1.20.3/tests/Makefile.am0000644000175000017500000005672714616437241011737 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk CLEANFILES += *.pid EXTRA_DIST = \ aio-parallel.sh \ aio-parallel-tls.sh \ aio-parallel-load.sh \ aio-parallel-load-tls.sh \ code-asserts.sh \ code-bool.sh \ code-errno.sh \ code-inttypes.sh \ code-stdint.sh \ connect-uri-nbd-vsock.sh \ eflags-plugin.sh \ functions.sh.in \ make-pki.sh \ meta-base-allocation.sh \ opt-info.sh \ opt-list.sh \ synch-parallel.sh \ synch-parallel-tls.sh \ $(NULL) check_DATA = check_PROGRAMS = TESTS = # Make sure that $srcdir is available to tests. # Enable debug in all tests. TESTS_ENVIRONMENT = \ LIBNBD_DEBUG=1 \ $(MALLOC_CHECKS) \ srcdir=$(srcdir) \ $(NULL) # Use the ./run script so we're always using the local library and tools. LOG_COMPILER = $(top_builddir)/run # Common flags. # Note there is no such thing as "AM_LDADD". AM_CPPFLAGS = \ -I$(top_srcdir)/include \ $(NULL) AM_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) AM_CXXFLAGS = \ $(WARNINGS_CFLAGS) \ $(NULL) #---------------------------------------------------------------------- # The following tests do not need an NBD server. check_PROGRAMS += \ compile-header-only \ compile-c \ compile-iso-c99 \ close-null \ debug \ debug-environment \ get-version \ export-name \ private-data \ $(NULL) TESTS += \ code-asserts.sh \ code-bool.sh \ code-errno.sh \ code-inttypes.sh \ code-stdint.sh \ compile-header-only \ compile-c \ compile-iso-c99 \ close-null \ debug \ debug-environment \ get-version \ export-name \ private-data \ $(NULL) # Even though we have a compile.c, we do not want make to create a 'compile' .PHONY: compile compile_header_only_SOURCES = compile-header-only.c compile_header_only_LDADD = $(top_builddir)/lib/libnbd.la compile_c_SOURCES = compile-c.c compile_c_LDADD = $(top_builddir)/lib/libnbd.la compile_iso_c99_SOURCES = compile-iso-c99.c compile_iso_c99_CPPFLAGS = \ $(AM_CPPFLAGS) \ -std=c99 -pedantic \ $(NULL) compile_iso_c99_LDADD = $(top_builddir)/lib/libnbd.la close_null_SOURCES = close-null.c close_null_LDADD = $(top_builddir)/lib/libnbd.la debug_SOURCES = debug.c debug_LDADD = $(top_builddir)/lib/libnbd.la debug_environment_SOURCES = debug-environment.c debug_environment_LDADD = $(top_builddir)/lib/libnbd.la get_version_SOURCES = get-version.c get_version_LDADD = $(top_builddir)/lib/libnbd.la export_name_SOURCES = export-name.c export_name_LDADD = $(top_builddir)/lib/libnbd.la private_data_SOURCES = private-data.c private_data_LDADD = $(top_builddir)/lib/libnbd.la if HAVE_CXX check_PROGRAMS += compile-cxx TESTS += compile-cxx compile_cxx_SOURCES = compile-cxx.cpp compile_cxx_LDADD = $(top_builddir)/lib/libnbd.la endif HAVE_CXX if HAVE_LIBDL check_PROGRAMS += dlopen TESTS += dlopen dlopen_SOURCES = dlopen.c dlopen_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DLIBRARY=\"$(top_builddir)/lib/.libs/libnbd.so.0\" \ $(NULL) dlopen_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) dlopen_LDADD = -ldl $(PTHREAD_LIBS) endif #---------------------------------------------------------------------- # The following tests require nbdkit as an NBD server to test against. if HAVE_NBDKIT check_PROGRAMS += \ errors-enum \ errors-bitmask \ errors-not-connected \ errors-name-too-long \ errors-poll-no-fd \ errors-connect-null \ errors-connect-twice \ errors-not-negotiating \ errors-not-negotiating-aio \ errors-notify-not-blocked \ errors-bad-cookie \ errors-pread-structured \ errors-multiple-disconnects \ errors-server-invalid-offset \ errors-client-oversize \ errors-server-oversize \ errors-client-unadvertised-cmd \ errors-server-unadvertised-cmd \ errors-client-unaligned \ errors-server-unaligned \ errors-client-unknown-flags \ errors-server-unknown-flags \ errors-client-zerosize \ errors-server-zerosize \ server-death \ shutdown-flags \ shutdown-opt-mode \ get-size \ read-only-flag \ read-write-flag \ can-flush-flag \ can-not-flush-flag \ can-fua-flag \ can-not-fua-flag \ is-rotational-flag \ is-not-rotational-flag \ can-trim-flag \ can-not-trim-flag \ can-zero-flag \ can-not-zero-flag \ can-fast-zero-flag \ can-not-fast-zero-flag \ can-df-flag \ can-not-df-flag \ can-multi-conn-flag \ can-not-multi-conn-flag \ can-cache-flag \ can-not-cache-flag \ oldstyle \ newstyle-limited \ opt-abort \ opt-list \ opt-info \ opt-list-meta \ opt-list-meta-queries \ opt-set-meta \ opt-set-meta-queries \ opt-structured-twice \ connect-systemd-socket-activation \ connect-unix \ connect-tcp \ connect-tcp6 \ aio-connect \ aio-connect-port \ aio-parallel \ aio-parallel-load \ synch-parallel \ meta-base-allocation \ closure-lifetimes \ pread-initialize \ socket-activation-name \ pwrite-extended \ $(NULL) TESTS += \ errors-enum \ errors-bitmask \ errors-not-connected \ errors-name-too-long \ errors-poll-no-fd \ errors-connect-null \ errors-connect-twice \ errors-not-negotiating \ errors-not-negotiating-aio \ errors-notify-not-blocked \ errors-bad-cookie \ errors-pread-structured \ errors-multiple-disconnects \ errors-server-invalid-offset \ errors-client-oversize \ errors-server-oversize \ errors-client-unadvertised-cmd \ errors-server-unadvertised-cmd \ errors-client-unaligned \ errors-server-unaligned \ errors-client-unknown-flags \ errors-server-unknown-flags \ errors-client-zerosize \ errors-server-zerosize \ server-death \ shutdown-flags \ shutdown-opt-mode \ get-size \ read-only-flag \ read-write-flag \ can-flush-flag \ can-not-flush-flag \ can-fua-flag \ can-not-fua-flag \ is-rotational-flag \ is-not-rotational-flag \ can-trim-flag \ can-not-trim-flag \ can-zero-flag \ can-not-zero-flag \ can-fast-zero-flag \ can-not-fast-zero-flag \ can-df-flag \ can-not-df-flag \ can-multi-conn-flag \ can-not-multi-conn-flag \ can-cache-flag \ can-not-cache-flag \ oldstyle \ newstyle-limited \ opt-abort \ opt-list \ opt-info \ opt-list-meta \ opt-list-meta-queries \ opt-set-meta \ opt-set-meta-queries \ opt-structured-twice \ connect-systemd-socket-activation \ connect-unix \ connect-tcp \ connect-tcp6 \ aio-connect \ aio-parallel.sh \ aio-parallel-load.sh \ synch-parallel.sh \ meta-base-allocation \ closure-lifetimes \ pread-initialize \ socket-activation-name \ $(NULL) # This test is compiled but not run because it requires a fixed port: # aio-connect-port errors_enum_SOURCES = errors-enum.c errors_enum_LDADD = $(top_builddir)/lib/libnbd.la errors_bitmask_SOURCES = errors-bitmask.c errors_bitmask_LDADD = $(top_builddir)/lib/libnbd.la errors_not_connected_SOURCES = errors-not-connected.c errors_not_connected_LDADD = $(top_builddir)/lib/libnbd.la errors_name_too_long_SOURCES = errors-name-too-long.c errors_name_too_long_LDADD = $(top_builddir)/lib/libnbd.la errors_poll_no_fd_SOURCES = errors-poll-no-fd.c errors_poll_no_fd_LDADD = $(top_builddir)/lib/libnbd.la errors_connect_null_SOURCES = errors-connect-null.c errors_connect_null_LDADD = $(top_builddir)/lib/libnbd.la errors_connect_twice_SOURCES = errors-connect-twice.c errors_connect_twice_LDADD = $(top_builddir)/lib/libnbd.la errors_not_negotiating_SOURCES = errors-not-negotiating.c errors_not_negotiating_LDADD = $(top_builddir)/lib/libnbd.la errors_not_negotiating_aio_SOURCES = errors-not-negotiating-aio.c errors_not_negotiating_aio_LDADD = $(top_builddir)/lib/libnbd.la errors_notify_not_blocked_SOURCES = errors-notify-not-blocked.c errors_notify_not_blocked_LDADD = $(top_builddir)/lib/libnbd.la errors_bad_cookie_SOURCES = errors-bad-cookie.c errors_bad_cookie_LDADD = $(top_builddir)/lib/libnbd.la errors_pread_structured_SOURCES = errors-pread-structured.c errors_pread_structured_LDADD = $(top_builddir)/lib/libnbd.la errors_multiple_disconnects_SOURCES = errors-multiple-disconnects.c errors_multiple_disconnects_LDADD = $(top_builddir)/lib/libnbd.la errors_server_invalid_offset_SOURCES = errors-server-invalid-offset.c errors_server_invalid_offset_LDADD = $(top_builddir)/lib/libnbd.la errors_client_oversize_SOURCES = \ errors-client-oversize.c \ requires.c \ requires.h \ $(NULL) errors_client_oversize_LDADD = $(top_builddir)/lib/libnbd.la errors_server_oversize_SOURCES = \ errors-server-oversize.c \ requires.c \ requires.h \ $(NULL) errors_server_oversize_LDADD = $(top_builddir)/lib/libnbd.la errors_client_unadvertised_cmd_SOURCES = errors-client-unadvertised-cmd.c \ requires.c requires.h errors_client_unadvertised_cmd_LDADD = $(top_builddir)/lib/libnbd.la errors_server_unadvertised_cmd_SOURCES = errors-server-unadvertised-cmd.c \ requires.c requires.h errors_server_unadvertised_cmd_LDADD = $(top_builddir)/lib/libnbd.la errors_client_unaligned_SOURCES = errors-client-unaligned.c \ requires.c requires.h errors_client_unaligned_LDADD = $(top_builddir)/lib/libnbd.la errors_server_unaligned_SOURCES = errors-server-unaligned.c \ requires.c requires.h errors_server_unaligned_LDADD = $(top_builddir)/lib/libnbd.la errors_client_unknown_flags_SOURCES = errors-client-unknown-flags.c errors_client_unknown_flags_LDADD = $(top_builddir)/lib/libnbd.la errors_server_unknown_flags_SOURCES = errors-server-unknown-flags.c errors_server_unknown_flags_LDADD = $(top_builddir)/lib/libnbd.la errors_client_zerosize_SOURCES = errors-client-zerosize.c errors_client_zerosize_LDADD = $(top_builddir)/lib/libnbd.la errors_server_zerosize_SOURCES = errors-server-zerosize.c errors_server_zerosize_LDADD = $(top_builddir)/lib/libnbd.la server_death_SOURCES = server-death.c server_death_LDADD = $(top_builddir)/lib/libnbd.la shutdown_flags_SOURCES = shutdown-flags.c shutdown_flags_LDADD = $(top_builddir)/lib/libnbd.la shutdown_opt_mode_SOURCES = shutdown-opt-mode.c shutdown_opt_mode_LDADD = $(top_builddir)/lib/libnbd.la get_size_SOURCES = get-size.c get_size_LDADD = $(top_builddir)/lib/libnbd.la read_only_flag_SOURCES = read-only-flag.c read_only_flag_LDADD = $(top_builddir)/lib/libnbd.la read_write_flag_SOURCES = read-write-flag.c read_write_flag_LDADD = $(top_builddir)/lib/libnbd.la can_flush_flag_SOURCES = eflags.c requires.c requires.h can_flush_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_flush \ $(NULL) can_flush_flag_LDADD = $(top_builddir)/lib/libnbd.la can_not_flush_flag_SOURCES = eflags.c requires.c requires.h can_not_flush_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_flush -Dvalue=false \ $(NULL) can_not_flush_flag_LDADD = $(top_builddir)/lib/libnbd.la can_fua_flag_SOURCES = eflags.c requires.c requires.h can_fua_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_fua -Dvalue=native \ $(NULL) can_fua_flag_LDADD = $(top_builddir)/lib/libnbd.la can_not_fua_flag_SOURCES = eflags.c requires.c requires.h can_not_fua_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_fua -Dvalue=none \ $(NULL) can_not_fua_flag_LDADD = $(top_builddir)/lib/libnbd.la is_rotational_flag_SOURCES = eflags.c requires.c requires.h is_rotational_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=is_rotational \ $(NULL) is_rotational_flag_LDADD = $(top_builddir)/lib/libnbd.la is_not_rotational_flag_SOURCES = eflags.c requires.c requires.h is_not_rotational_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=is_rotational -Dvalue=false \ $(NULL) is_not_rotational_flag_LDADD = $(top_builddir)/lib/libnbd.la can_trim_flag_SOURCES = eflags.c requires.c requires.h can_trim_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_trim \ $(NULL) can_trim_flag_LDADD = $(top_builddir)/lib/libnbd.la can_not_trim_flag_SOURCES = eflags.c requires.c requires.h can_not_trim_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_trim -Dvalue=false \ $(NULL) can_not_trim_flag_LDADD = $(top_builddir)/lib/libnbd.la can_zero_flag_SOURCES = eflags.c requires.c requires.h can_zero_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_zero \ $(NULL) can_zero_flag_LDADD = $(top_builddir)/lib/libnbd.la can_not_zero_flag_SOURCES = eflags.c requires.c requires.h can_not_zero_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_zero -Dvalue=false \ -Dfilter='"--filter=nozero"' \ $(NULL) can_not_zero_flag_LDADD = $(top_builddir)/lib/libnbd.la can_fast_zero_flag_SOURCES = eflags.c requires.c requires.h can_fast_zero_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_fast_zero \ -Drequirement='"has_can_fast_zero=1"' \ $(NULL) can_fast_zero_flag_LDADD = $(top_builddir)/lib/libnbd.la can_not_fast_zero_flag_SOURCES = eflags.c requires.c requires.h can_not_fast_zero_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_fast_zero -Dvalue=false \ -Drequirement='"has_can_fast_zero=1"' \ $(NULL) can_not_fast_zero_flag_LDADD = $(top_builddir)/lib/libnbd.la can_df_flag_SOURCES = eflags.c requires.c requires.h can_df_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_df \ $(NULL) can_df_flag_LDADD = $(top_builddir)/lib/libnbd.la can_not_df_flag_SOURCES = eflags.c requires.c requires.h can_not_df_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_df -Dvalue=false -Dno_sr \ $(NULL) can_not_df_flag_LDADD = $(top_builddir)/lib/libnbd.la can_multi_conn_flag_SOURCES = eflags.c requires.c requires.h can_multi_conn_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_multi_conn \ $(NULL) can_multi_conn_flag_LDADD = $(top_builddir)/lib/libnbd.la can_not_multi_conn_flag_SOURCES = eflags.c requires.c requires.h can_not_multi_conn_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_multi_conn -Dvalue=false \ $(NULL) can_not_multi_conn_flag_LDADD = $(top_builddir)/lib/libnbd.la can_cache_flag_SOURCES = eflags.c requires.c requires.h can_cache_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_cache -Dvalue=native \ -Drequirement='"has_can_cache=1"' \ $(NULL) can_cache_flag_LDADD = $(top_builddir)/lib/libnbd.la can_not_cache_flag_SOURCES = eflags.c requires.c requires.h can_not_cache_flag_CPPFLAGS = \ $(AM_CPPFLAGS) \ -Dflag=can_cache -Dvalue=none \ -Drequirement='"has_can_cache=1"' \ $(NULL) can_not_cache_flag_LDADD = $(top_builddir)/lib/libnbd.la oldstyle_SOURCES = oldstyle.c oldstyle_LDADD = $(top_builddir)/lib/libnbd.la newstyle_limited_SOURCES = newstyle-limited.c requires.c requires.h newstyle_limited_LDADD = $(top_builddir)/lib/libnbd.la opt_abort_SOURCES = opt-abort.c opt_abort_LDADD = $(top_builddir)/lib/libnbd.la opt_list_SOURCES = opt-list.c requires.c requires.h opt_list_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DSCRIPT='"$(abs_srcdir)/opt-list.sh"' \ $(NULL) opt_list_LDADD = $(top_builddir)/lib/libnbd.la opt_info_SOURCES = opt-info.c opt_info_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DSCRIPT='"$(abs_srcdir)/opt-info.sh"' \ $(NULL) opt_info_LDADD = $(top_builddir)/lib/libnbd.la opt_list_meta_SOURCES = opt-list-meta.c opt_list_meta_LDADD = $(top_builddir)/lib/libnbd.la opt_list_meta_queries_SOURCES = opt-list-meta-queries.c opt_list_meta_queries_LDADD = $(top_builddir)/lib/libnbd.la opt_set_meta_SOURCES = opt-set-meta.c requires.c requires.h opt_set_meta_CPPFLAGS = \ $(AM_CPPFLAGS) \ -I$(top_srcdir)/common/include \ $(NULL) opt_set_meta_LDADD = $(top_builddir)/lib/libnbd.la opt_set_meta_queries_SOURCES = opt-set-meta-queries.c opt_set_meta_queries_LDADD = $(top_builddir)/lib/libnbd.la opt_structured_twice_SOURCES = opt-structured-twice.c opt_structured_twice_LDADD = $(top_builddir)/lib/libnbd.la connect_systemd_socket_activation_SOURCES = \ connect-systemd-socket-activation.c \ requires.c \ requires.h \ $(NULL) connect_systemd_socket_activation_LDADD = $(top_builddir)/lib/libnbd.la connect_unix_SOURCES = connect-unix.c connect_unix_LDADD = $(top_builddir)/lib/libnbd.la connect_tcp_SOURCES = \ connect-tcp.c \ pick-a-port.c \ pick-a-port.h \ requires.c \ requires.h \ $(NULL) connect_tcp_LDADD = $(top_builddir)/lib/libnbd.la connect_tcp6_SOURCES = \ connect-tcp6.c \ pick-a-port.c \ pick-a-port.h \ requires.c \ requires.h \ $(NULL) connect_tcp6_LDADD = $(top_builddir)/lib/libnbd.la aio_connect_SOURCES = \ aio-connect.c \ pick-a-port.c \ pick-a-port.h \ requires.c \ requires.h \ $(NULL) aio_connect_LDADD = $(top_builddir)/lib/libnbd.la aio_connect_port_SOURCES = aio-connect-port.c aio_connect_port_LDADD = $(top_builddir)/lib/libnbd.la aio_parallel_SOURCES = aio-parallel.c aio_parallel_CPPFLAGS = \ $(AM_CPPFLAGS) \ -I$(top_srcdir)/common/include \ $(NULL) aio_parallel_LDADD = $(top_builddir)/lib/libnbd.la $(PTHREAD_LIBS) aio_parallel_load_SOURCES = aio-parallel-load.c aio_parallel_load_LDADD = $(top_builddir)/lib/libnbd.la $(PTHREAD_LIBS) synch_parallel_SOURCES = synch-parallel.c synch_parallel_CPPFLAGS = \ $(AM_CPPFLAGS) \ -I$(top_srcdir)/common/include \ $(NULL) synch_parallel_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) synch_parallel_LDADD = $(top_builddir)/lib/libnbd.la $(PTHREAD_LIBS) meta_base_allocation_SOURCES = meta-base-allocation.c meta_base_allocation_LDADD = $(top_builddir)/lib/libnbd.la closure_lifetimes_SOURCES = closure-lifetimes.c closure_lifetimes_LDADD = $(top_builddir)/lib/libnbd.la pread_initialize_SOURCES = pread-initialize.c pread_initialize_LDADD = $(top_builddir)/lib/libnbd.la socket_activation_name_SOURCES = \ socket-activation-name.c \ requires.c \ requires.h socket_activation_name_LDADD = $(top_builddir)/lib/libnbd.la pwrite_extended_SOURCES = pwrite-extended.c pwrite_extended_LDADD = $(top_builddir)/lib/libnbd.la #---------------------------------------------------------------------- # Testing TLS support. if HAVE_GNUTLS if HAVE_CERTTOOL check_PROGRAMS += connect-tls-certs check_DATA += pki/stamp-pki TESTS += connect-tls-certs connect_tls_certs_SOURCES = connect-tls.c requires.c requires.h connect_tls_certs_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DCERTS=1 \ $(NULL) connect_tls_certs_LDADD = $(top_builddir)/lib/libnbd.la pki/stamp-pki: $(srcdir)/make-pki.sh rm -rf pki pki-t SRCDIR=$(srcdir) CERTTOOL=$(CERTTOOL) $(srcdir)/make-pki.sh pki-t mv pki-t pki touch pki/stamp-pki endif HAVE_CERTTOOL if HAVE_PSKTOOL check_PROGRAMS += \ connect-tls-psk \ opt-starttls \ aio-parallel-tls \ aio-parallel-load-tls \ synch-parallel-tls \ $(NULL) TESTS += \ connect-tls-psk \ opt-starttls \ aio-parallel-tls.sh \ aio-parallel-load-tls.sh \ synch-parallel-tls.sh \ $(NULL) check_DATA += keys.psk connect_tls_psk_SOURCES = connect-tls.c requires.c requires.h connect_tls_psk_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DPSK=1 \ $(NULL) connect_tls_psk_LDADD = $(top_builddir)/lib/libnbd.la opt_starttls_SOURCES = opt-starttls.c requires.c requires.h opt_starttls_LDADD = $(top_builddir)/lib/libnbd.la aio_parallel_tls_SOURCES = aio-parallel.c aio_parallel_tls_CPPFLAGS = \ $(AM_CPPFLAGS) \ -I$(top_srcdir)/common/include \ -DTLS=1 \ $(NULL) aio_parallel_tls_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) aio_parallel_tls_LDADD = $(top_builddir)/lib/libnbd.la $(PTHREAD_LIBS) aio_parallel_load_tls_SOURCES = aio-parallel-load.c aio_parallel_load_tls_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DTLS=1 \ $(NULL) aio_parallel_load_tls_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) aio_parallel_load_tls_LDADD = $(top_builddir)/lib/libnbd.la $(PTHREAD_LIBS) synch_parallel_tls_SOURCES = synch-parallel.c synch_parallel_tls_CPPFLAGS = \ $(AM_CPPFLAGS) \ -I$(top_srcdir)/common/include \ -DTLS=1 \ $(NULL) synch_parallel_tls_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) synch_parallel_tls_LDADD = $(top_builddir)/lib/libnbd.la $(PTHREAD_LIBS) keys.psk: rm -f $@ $@-t $(PSKTOOL) -u alice -p $@-t mv $@-t $@ endif HAVE_PSKTOOL endif HAVE_GNUTLS #---------------------------------------------------------------------- # Testing URIs. check_PROGRAMS += \ connect-uri-nbd \ connect-uri-nbd-unix \ connect-uri-nbd-unix-uppercase \ $(NULL) TESTS += \ connect-uri-nbd \ connect-uri-nbd-unix \ connect-uri-nbd-unix-uppercase \ connect-uri-nbd-vsock.sh \ $(NULL) connect_uri_nbd_SOURCES = \ connect-uri.c \ requires.c requires.h pick-a-port.c pick-a-port.h \ $(NULL) connect_uri_nbd_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DDEFINE_STR_AS_PORT=1 \ -DSERVER_PARAMS='"-p", str' \ -DURI='"nbd://localhost:%s/", str' \ $(NULL) connect_uri_nbd_CFLAGS = $(AM_CFLAGS) connect_uri_nbd_LDADD = $(top_builddir)/lib/libnbd.la connect_uri_nbd_unix_SOURCES = \ connect-uri.c \ requires.c requires.h pick-a-port.c pick-a-port.h \ $(NULL) connect_uri_nbd_unix_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DDEFINE_STR_AS_UNIX_SOCKET=1 \ -DSERVER_PARAMS='"-U", str' \ -DURI='"nbd+unix:///?socket=%s", str' \ $(NULL) connect_uri_nbd_unix_LDADD = $(top_builddir)/lib/libnbd.la connect_uri_nbd_unix_uppercase_SOURCES = \ connect-uri.c \ requires.c requires.h pick-a-port.c pick-a-port.h \ $(NULL) connect_uri_nbd_unix_uppercase_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DDEFINE_STR_AS_UNIX_SOCKET=1 \ -DSERVER_PARAMS='"-U", str' \ -DURI='"NBD+UNIX:///?SOCKET=%s", str' \ $(NULL) connect_uri_nbd_unix_uppercase_LDADD = $(top_builddir)/lib/libnbd.la if HAVE_GNUTLS if HAVE_CERTTOOL check_PROGRAMS += \ connect-uri-nbds-certs \ connect-uri-nbds-unix-certs \ $(NULL) TESTS += \ connect-uri-nbds-certs \ connect-uri-nbds-unix-certs \ $(NULL) connect_uri_nbds_certs_SOURCES = \ connect-uri.c \ requires.c requires.h pick-a-port.c pick-a-port.h \ $(NULL) connect_uri_nbds_certs_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DDEFINE_STR_AS_PORT=1 \ -DSERVER_PARAMS='"-p", str, "--tls=require", "--tls-verify-peer", "--tls-certificates=pki"' \ -DREQUIRES_NBDKIT_TLS_VERIFY_PEER=1 \ -DURI='"nbds://localhost:%s/?tls-certificates=pki", str' \ $(NULL) connect_uri_nbds_certs_LDADD = $(top_builddir)/lib/libnbd.la connect_uri_nbds_unix_certs_SOURCES = \ connect-uri.c \ requires.c requires.h pick-a-port.c pick-a-port.h \ $(NULL) connect_uri_nbds_unix_certs_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DDEFINE_STR_AS_UNIX_SOCKET=1 \ -DSERVER_PARAMS='"-U", str, "--tls=require", "--tls-verify-peer", "--tls-certificates=pki"' \ -DREQUIRES_NBDKIT_TLS_VERIFY_PEER=1 \ -DURI='"nbds+unix://alice@/?tls-certificates=pki&socket=%s", str' \ $(NULL) connect_uri_nbds_unix_certs_LDADD = $(top_builddir)/lib/libnbd.la endif HAVE_CERTTOOL if HAVE_PSKTOOL check_PROGRAMS += \ connect-uri-nbds-psk \ connect-uri-nbds-unix-psk \ $(NULL) TESTS += \ connect-uri-nbds-psk \ connect-uri-nbds-unix-psk \ $(NULL) connect_uri_nbds_psk_SOURCES = \ connect-uri.c \ requires.c requires.h pick-a-port.c pick-a-port.h \ $(NULL) connect_uri_nbds_psk_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DDEFINE_STR_AS_PORT=1 \ -DSERVER_PARAMS='"-p", str, "--tls=require", "--tls-verify-peer", "--tls-psk=keys.psk"' \ -DREQUIRES_NBDKIT_TLS_VERIFY_PEER=1 \ -DURI='"nbds://alice@localhost:%s/?tls-psk-file=keys.psk", str' \ $(NULL) connect_uri_nbds_psk_LDADD = $(top_builddir)/lib/libnbd.la connect_uri_nbds_unix_psk_SOURCES = \ connect-uri.c \ requires.c requires.h pick-a-port.c pick-a-port.h \ $(NULL) connect_uri_nbds_unix_psk_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DDEFINE_STR_AS_UNIX_SOCKET=1 \ -DSERVER_PARAMS='"-U", str, "--tls=require", "--tls-verify-peer", "--tls-psk=keys.psk"' \ -DREQUIRES_NBDKIT_TLS_VERIFY_PEER=1 \ -DURI='"nbds+unix://alice@/?tls-psk-file=keys.psk&socket=%s", str' \ $(NULL) connect_uri_nbds_unix_psk_LDADD = $(top_builddir)/lib/libnbd.la endif HAVE_PSKTOOL endif HAVE_GNUTLS # Keys are expensive to recreate, so only delete them when we do # ‘make distclean’. DISTCLEANFILES = keys.psk distclean-local: distclean-local-tls distclean-local-tls: rm -rf pki endif HAVE_NBDKIT check-valgrind: LIBNBD_VALGRIND=1 $(MAKE) check libnbd-1.20.3/tests/Makefile.in0000644000175000017500000132255214675532455011751 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # common-rules.mk is included in every Makefile.am. # subdir-rules.mk is included only in subdirectories. 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#---------------------------------------------------------------------- # The following tests require nbdkit as an NBD server to test against. @HAVE_NBDKIT_TRUE@am__append_5 = \ @HAVE_NBDKIT_TRUE@ errors-enum \ @HAVE_NBDKIT_TRUE@ errors-bitmask \ @HAVE_NBDKIT_TRUE@ errors-not-connected \ @HAVE_NBDKIT_TRUE@ errors-name-too-long \ @HAVE_NBDKIT_TRUE@ errors-poll-no-fd \ @HAVE_NBDKIT_TRUE@ errors-connect-null \ @HAVE_NBDKIT_TRUE@ errors-connect-twice \ @HAVE_NBDKIT_TRUE@ errors-not-negotiating \ @HAVE_NBDKIT_TRUE@ errors-not-negotiating-aio \ @HAVE_NBDKIT_TRUE@ errors-notify-not-blocked \ @HAVE_NBDKIT_TRUE@ errors-bad-cookie \ @HAVE_NBDKIT_TRUE@ errors-pread-structured \ @HAVE_NBDKIT_TRUE@ errors-multiple-disconnects \ @HAVE_NBDKIT_TRUE@ errors-server-invalid-offset \ @HAVE_NBDKIT_TRUE@ errors-client-oversize \ @HAVE_NBDKIT_TRUE@ errors-server-oversize \ @HAVE_NBDKIT_TRUE@ errors-client-unadvertised-cmd \ @HAVE_NBDKIT_TRUE@ errors-server-unadvertised-cmd \ @HAVE_NBDKIT_TRUE@ errors-client-unaligned \ @HAVE_NBDKIT_TRUE@ errors-server-unaligned \ @HAVE_NBDKIT_TRUE@ errors-client-unknown-flags \ @HAVE_NBDKIT_TRUE@ errors-server-unknown-flags \ @HAVE_NBDKIT_TRUE@ errors-client-zerosize \ @HAVE_NBDKIT_TRUE@ errors-server-zerosize \ @HAVE_NBDKIT_TRUE@ server-death \ @HAVE_NBDKIT_TRUE@ shutdown-flags \ @HAVE_NBDKIT_TRUE@ shutdown-opt-mode \ @HAVE_NBDKIT_TRUE@ get-size \ @HAVE_NBDKIT_TRUE@ read-only-flag \ @HAVE_NBDKIT_TRUE@ read-write-flag \ @HAVE_NBDKIT_TRUE@ can-flush-flag \ @HAVE_NBDKIT_TRUE@ can-not-flush-flag \ @HAVE_NBDKIT_TRUE@ can-fua-flag \ @HAVE_NBDKIT_TRUE@ can-not-fua-flag \ @HAVE_NBDKIT_TRUE@ is-rotational-flag \ @HAVE_NBDKIT_TRUE@ is-not-rotational-flag \ @HAVE_NBDKIT_TRUE@ can-trim-flag \ @HAVE_NBDKIT_TRUE@ can-not-trim-flag \ @HAVE_NBDKIT_TRUE@ can-zero-flag \ @HAVE_NBDKIT_TRUE@ can-not-zero-flag \ @HAVE_NBDKIT_TRUE@ can-fast-zero-flag \ @HAVE_NBDKIT_TRUE@ can-not-fast-zero-flag \ @HAVE_NBDKIT_TRUE@ can-df-flag \ @HAVE_NBDKIT_TRUE@ can-not-df-flag \ @HAVE_NBDKIT_TRUE@ can-multi-conn-flag \ @HAVE_NBDKIT_TRUE@ can-not-multi-conn-flag \ @HAVE_NBDKIT_TRUE@ can-cache-flag \ @HAVE_NBDKIT_TRUE@ can-not-cache-flag \ @HAVE_NBDKIT_TRUE@ oldstyle \ @HAVE_NBDKIT_TRUE@ newstyle-limited \ @HAVE_NBDKIT_TRUE@ opt-abort \ @HAVE_NBDKIT_TRUE@ opt-list \ @HAVE_NBDKIT_TRUE@ opt-info \ @HAVE_NBDKIT_TRUE@ opt-list-meta \ @HAVE_NBDKIT_TRUE@ opt-list-meta-queries \ @HAVE_NBDKIT_TRUE@ opt-set-meta \ @HAVE_NBDKIT_TRUE@ opt-set-meta-queries \ @HAVE_NBDKIT_TRUE@ opt-structured-twice \ @HAVE_NBDKIT_TRUE@ connect-systemd-socket-activation \ @HAVE_NBDKIT_TRUE@ connect-unix \ @HAVE_NBDKIT_TRUE@ connect-tcp \ @HAVE_NBDKIT_TRUE@ connect-tcp6 \ @HAVE_NBDKIT_TRUE@ aio-connect \ @HAVE_NBDKIT_TRUE@ aio-connect-port \ @HAVE_NBDKIT_TRUE@ aio-parallel \ @HAVE_NBDKIT_TRUE@ aio-parallel-load \ @HAVE_NBDKIT_TRUE@ synch-parallel \ @HAVE_NBDKIT_TRUE@ meta-base-allocation \ @HAVE_NBDKIT_TRUE@ closure-lifetimes \ @HAVE_NBDKIT_TRUE@ pread-initialize \ @HAVE_NBDKIT_TRUE@ socket-activation-name \ @HAVE_NBDKIT_TRUE@ pwrite-extended \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@am__append_6 = \ @HAVE_NBDKIT_TRUE@ errors-enum \ @HAVE_NBDKIT_TRUE@ errors-bitmask \ @HAVE_NBDKIT_TRUE@ errors-not-connected \ @HAVE_NBDKIT_TRUE@ errors-name-too-long \ @HAVE_NBDKIT_TRUE@ errors-poll-no-fd \ @HAVE_NBDKIT_TRUE@ errors-connect-null \ @HAVE_NBDKIT_TRUE@ errors-connect-twice \ @HAVE_NBDKIT_TRUE@ errors-not-negotiating \ @HAVE_NBDKIT_TRUE@ errors-not-negotiating-aio \ @HAVE_NBDKIT_TRUE@ errors-notify-not-blocked \ @HAVE_NBDKIT_TRUE@ errors-bad-cookie \ @HAVE_NBDKIT_TRUE@ errors-pread-structured \ @HAVE_NBDKIT_TRUE@ errors-multiple-disconnects \ @HAVE_NBDKIT_TRUE@ errors-server-invalid-offset \ @HAVE_NBDKIT_TRUE@ errors-client-oversize \ @HAVE_NBDKIT_TRUE@ errors-server-oversize \ @HAVE_NBDKIT_TRUE@ errors-client-unadvertised-cmd \ @HAVE_NBDKIT_TRUE@ errors-server-unadvertised-cmd \ @HAVE_NBDKIT_TRUE@ errors-client-unaligned \ @HAVE_NBDKIT_TRUE@ errors-server-unaligned \ @HAVE_NBDKIT_TRUE@ errors-client-unknown-flags \ @HAVE_NBDKIT_TRUE@ errors-server-unknown-flags \ @HAVE_NBDKIT_TRUE@ errors-client-zerosize \ @HAVE_NBDKIT_TRUE@ errors-server-zerosize \ @HAVE_NBDKIT_TRUE@ server-death \ @HAVE_NBDKIT_TRUE@ shutdown-flags \ @HAVE_NBDKIT_TRUE@ shutdown-opt-mode \ @HAVE_NBDKIT_TRUE@ get-size \ @HAVE_NBDKIT_TRUE@ read-only-flag \ @HAVE_NBDKIT_TRUE@ read-write-flag \ @HAVE_NBDKIT_TRUE@ can-flush-flag \ @HAVE_NBDKIT_TRUE@ can-not-flush-flag \ @HAVE_NBDKIT_TRUE@ can-fua-flag \ @HAVE_NBDKIT_TRUE@ can-not-fua-flag \ @HAVE_NBDKIT_TRUE@ is-rotational-flag \ @HAVE_NBDKIT_TRUE@ is-not-rotational-flag \ @HAVE_NBDKIT_TRUE@ can-trim-flag \ @HAVE_NBDKIT_TRUE@ can-not-trim-flag \ @HAVE_NBDKIT_TRUE@ can-zero-flag \ @HAVE_NBDKIT_TRUE@ can-not-zero-flag \ @HAVE_NBDKIT_TRUE@ can-fast-zero-flag \ @HAVE_NBDKIT_TRUE@ can-not-fast-zero-flag \ @HAVE_NBDKIT_TRUE@ can-df-flag \ @HAVE_NBDKIT_TRUE@ can-not-df-flag \ @HAVE_NBDKIT_TRUE@ can-multi-conn-flag \ @HAVE_NBDKIT_TRUE@ can-not-multi-conn-flag \ @HAVE_NBDKIT_TRUE@ can-cache-flag \ @HAVE_NBDKIT_TRUE@ can-not-cache-flag \ @HAVE_NBDKIT_TRUE@ oldstyle \ @HAVE_NBDKIT_TRUE@ newstyle-limited \ @HAVE_NBDKIT_TRUE@ opt-abort \ @HAVE_NBDKIT_TRUE@ opt-list \ @HAVE_NBDKIT_TRUE@ opt-info \ @HAVE_NBDKIT_TRUE@ opt-list-meta \ @HAVE_NBDKIT_TRUE@ opt-list-meta-queries \ @HAVE_NBDKIT_TRUE@ opt-set-meta \ @HAVE_NBDKIT_TRUE@ opt-set-meta-queries \ @HAVE_NBDKIT_TRUE@ opt-structured-twice \ @HAVE_NBDKIT_TRUE@ connect-systemd-socket-activation \ @HAVE_NBDKIT_TRUE@ connect-unix \ @HAVE_NBDKIT_TRUE@ connect-tcp \ @HAVE_NBDKIT_TRUE@ connect-tcp6 \ @HAVE_NBDKIT_TRUE@ aio-connect \ @HAVE_NBDKIT_TRUE@ aio-parallel.sh \ @HAVE_NBDKIT_TRUE@ aio-parallel-load.sh \ @HAVE_NBDKIT_TRUE@ synch-parallel.sh \ @HAVE_NBDKIT_TRUE@ meta-base-allocation \ @HAVE_NBDKIT_TRUE@ closure-lifetimes \ @HAVE_NBDKIT_TRUE@ pread-initialize \ @HAVE_NBDKIT_TRUE@ socket-activation-name \ @HAVE_NBDKIT_TRUE@ $(NULL) #---------------------------------------------------------------------- # Testing TLS support. @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@am__append_7 = connect-tls-certs @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@am__append_8 = pki/stamp-pki @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@am__append_9 = connect-tls-certs @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@am__append_10 = \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ connect-tls-psk \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ opt-starttls \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ aio-parallel-tls \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ aio-parallel-load-tls \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ synch-parallel-tls \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ $(NULL) @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@am__append_11 = \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ connect-tls-psk \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ opt-starttls \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ aio-parallel-tls.sh \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ aio-parallel-load-tls.sh \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ synch-parallel-tls.sh \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ $(NULL) @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@am__append_12 = keys.psk #---------------------------------------------------------------------- # Testing URIs. @HAVE_NBDKIT_TRUE@am__append_13 = \ @HAVE_NBDKIT_TRUE@ connect-uri-nbd \ @HAVE_NBDKIT_TRUE@ connect-uri-nbd-unix \ @HAVE_NBDKIT_TRUE@ connect-uri-nbd-unix-uppercase \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@am__append_14 = \ @HAVE_NBDKIT_TRUE@ connect-uri-nbd \ @HAVE_NBDKIT_TRUE@ connect-uri-nbd-unix \ @HAVE_NBDKIT_TRUE@ connect-uri-nbd-unix-uppercase \ @HAVE_NBDKIT_TRUE@ connect-uri-nbd-vsock.sh \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@am__append_15 = \ @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ connect-uri-nbds-certs \ @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ connect-uri-nbds-unix-certs \ @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@am__append_16 = \ @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ connect-uri-nbds-certs \ @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ connect-uri-nbds-unix-certs \ @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@am__append_17 = \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ connect-uri-nbds-psk \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ connect-uri-nbds-unix-psk \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ $(NULL) @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@am__append_18 = \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ connect-uri-nbds-psk \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ connect-uri-nbds-unix-psk \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ $(NULL) subdir = tests ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 am__aclocal_m4_deps = $(top_srcdir)/m4/ac_c_compile_flags.m4 \ $(top_srcdir)/m4/ax_pthread.m4 $(top_srcdir)/m4/libtool.m4 \ $(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \ $(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \ $(top_srcdir)/m4/ocaml.m4 $(top_srcdir)/configure.ac am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ $(ACLOCAL_M4) DIST_COMMON = $(srcdir)/Makefile.am $(am__DIST_COMMON) mkinstalldirs = $(install_sh) -d CONFIG_HEADER = $(top_builddir)/config.h CONFIG_CLEAN_FILES = functions.sh CONFIG_CLEAN_VPATH_FILES = am__EXEEXT_1 = @HAVE_CXX_TRUE@am__EXEEXT_2 = compile-cxx$(EXEEXT) @HAVE_LIBDL_TRUE@am__EXEEXT_3 = dlopen$(EXEEXT) @HAVE_NBDKIT_TRUE@am__EXEEXT_4 = errors-enum$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-bitmask$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-not-connected$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-name-too-long$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-poll-no-fd$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-connect-null$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-connect-twice$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-not-negotiating$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-not-negotiating-aio$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-notify-not-blocked$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-bad-cookie$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-pread-structured$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-multiple-disconnects$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-server-invalid-offset$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-client-oversize$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-server-oversize$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-client-unadvertised-cmd$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-server-unadvertised-cmd$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-client-unaligned$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-server-unaligned$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-client-unknown-flags$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-server-unknown-flags$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-client-zerosize$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ errors-server-zerosize$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ server-death$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ shutdown-flags$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ shutdown-opt-mode$(EXEEXT) get-size$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ read-only-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ read-write-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-flush-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-not-flush-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-fua-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-not-fua-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ is-rotational-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ is-not-rotational-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-trim-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-not-trim-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-zero-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-not-zero-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-fast-zero-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-not-fast-zero-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-df-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-not-df-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-multi-conn-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-not-multi-conn-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-cache-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ can-not-cache-flag$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ oldstyle$(EXEEXT) newstyle-limited$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ opt-abort$(EXEEXT) opt-list$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ opt-info$(EXEEXT) opt-list-meta$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ opt-list-meta-queries$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ opt-set-meta$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ opt-set-meta-queries$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ opt-structured-twice$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ connect-systemd-socket-activation$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ connect-unix$(EXEEXT) connect-tcp$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ connect-tcp6$(EXEEXT) aio-connect$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ aio-connect-port$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ aio-parallel$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ aio-parallel-load$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ synch-parallel$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ meta-base-allocation$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ closure-lifetimes$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ pread-initialize$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ socket-activation-name$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ pwrite-extended$(EXEEXT) $(am__EXEEXT_1) @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@am__EXEEXT_5 = connect-tls-certs$(EXEEXT) @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@am__EXEEXT_6 = connect-tls-psk$(EXEEXT) \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ opt-starttls$(EXEEXT) \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ aio-parallel-tls$(EXEEXT) \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ aio-parallel-load-tls$(EXEEXT) \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ synch-parallel-tls$(EXEEXT) \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ $(am__EXEEXT_1) @HAVE_NBDKIT_TRUE@am__EXEEXT_7 = connect-uri-nbd$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ connect-uri-nbd-unix$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ connect-uri-nbd-unix-uppercase$(EXEEXT) \ @HAVE_NBDKIT_TRUE@ $(am__EXEEXT_1) @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@am__EXEEXT_8 = connect-uri-nbds-certs$(EXEEXT) \ @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ connect-uri-nbds-unix-certs$(EXEEXT) \ @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ $(am__EXEEXT_1) @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@am__EXEEXT_9 = connect-uri-nbds-psk$(EXEEXT) \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ connect-uri-nbds-unix-psk$(EXEEXT) \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ $(am__EXEEXT_1) am__aio_connect_SOURCES_DIST = aio-connect.c pick-a-port.c \ pick-a-port.h requires.c requires.h am__objects_1 = @HAVE_NBDKIT_TRUE@am_aio_connect_OBJECTS = aio-connect.$(OBJEXT) \ @HAVE_NBDKIT_TRUE@ pick-a-port.$(OBJEXT) requires.$(OBJEXT) \ @HAVE_NBDKIT_TRUE@ $(am__objects_1) aio_connect_OBJECTS = $(am_aio_connect_OBJECTS) @HAVE_NBDKIT_TRUE@aio_connect_DEPENDENCIES = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la AM_V_lt = $(am__v_lt_@AM_V@) am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@) am__v_lt_0 = --silent am__v_lt_1 = am__aio_connect_port_SOURCES_DIST = aio-connect-port.c @HAVE_NBDKIT_TRUE@am_aio_connect_port_OBJECTS = \ @HAVE_NBDKIT_TRUE@ aio-connect-port.$(OBJEXT) aio_connect_port_OBJECTS = $(am_aio_connect_port_OBJECTS) @HAVE_NBDKIT_TRUE@aio_connect_port_DEPENDENCIES = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la am__aio_parallel_SOURCES_DIST = aio-parallel.c @HAVE_NBDKIT_TRUE@am_aio_parallel_OBJECTS = \ @HAVE_NBDKIT_TRUE@ aio_parallel-aio-parallel.$(OBJEXT) aio_parallel_OBJECTS = $(am_aio_parallel_OBJECTS) am__DEPENDENCIES_1 = @HAVE_NBDKIT_TRUE@aio_parallel_DEPENDENCIES = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBDKIT_TRUE@ $(am__DEPENDENCIES_1) am__aio_parallel_load_SOURCES_DIST = aio-parallel-load.c @HAVE_NBDKIT_TRUE@am_aio_parallel_load_OBJECTS = \ @HAVE_NBDKIT_TRUE@ aio-parallel-load.$(OBJEXT) aio_parallel_load_OBJECTS = $(am_aio_parallel_load_OBJECTS) @HAVE_NBDKIT_TRUE@aio_parallel_load_DEPENDENCIES = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBDKIT_TRUE@ $(am__DEPENDENCIES_1) am__aio_parallel_load_tls_SOURCES_DIST = aio-parallel-load.c @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@am_aio_parallel_load_tls_OBJECTS = aio_parallel_load_tls-aio-parallel-load.$(OBJEXT) aio_parallel_load_tls_OBJECTS = $(am_aio_parallel_load_tls_OBJECTS) @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@aio_parallel_load_tls_DEPENDENCIES = $(top_builddir)/lib/libnbd.la \ @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ $(am__DEPENDENCIES_1) aio_parallel_load_tls_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC \ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \ 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-f ./$(DEPDIR)/can_fast_zero_flag-eflags.Po -rm -f ./$(DEPDIR)/can_fast_zero_flag-requires.Po -rm -f ./$(DEPDIR)/can_flush_flag-eflags.Po -rm -f ./$(DEPDIR)/can_flush_flag-requires.Po -rm -f ./$(DEPDIR)/can_fua_flag-eflags.Po -rm -f ./$(DEPDIR)/can_fua_flag-requires.Po -rm -f ./$(DEPDIR)/can_multi_conn_flag-eflags.Po -rm -f ./$(DEPDIR)/can_multi_conn_flag-requires.Po -rm -f ./$(DEPDIR)/can_not_cache_flag-eflags.Po -rm -f ./$(DEPDIR)/can_not_cache_flag-requires.Po -rm -f ./$(DEPDIR)/can_not_df_flag-eflags.Po -rm -f ./$(DEPDIR)/can_not_df_flag-requires.Po -rm -f ./$(DEPDIR)/can_not_fast_zero_flag-eflags.Po -rm -f ./$(DEPDIR)/can_not_fast_zero_flag-requires.Po -rm -f ./$(DEPDIR)/can_not_flush_flag-eflags.Po -rm -f ./$(DEPDIR)/can_not_flush_flag-requires.Po -rm -f ./$(DEPDIR)/can_not_fua_flag-eflags.Po -rm -f ./$(DEPDIR)/can_not_fua_flag-requires.Po -rm -f ./$(DEPDIR)/can_not_multi_conn_flag-eflags.Po -rm -f ./$(DEPDIR)/can_not_multi_conn_flag-requires.Po -rm -f ./$(DEPDIR)/can_not_trim_flag-eflags.Po -rm -f ./$(DEPDIR)/can_not_trim_flag-requires.Po -rm -f ./$(DEPDIR)/can_not_zero_flag-eflags.Po -rm -f ./$(DEPDIR)/can_not_zero_flag-requires.Po -rm -f ./$(DEPDIR)/can_trim_flag-eflags.Po -rm -f ./$(DEPDIR)/can_trim_flag-requires.Po -rm -f ./$(DEPDIR)/can_zero_flag-eflags.Po -rm -f ./$(DEPDIR)/can_zero_flag-requires.Po -rm -f ./$(DEPDIR)/close-null.Po -rm -f ./$(DEPDIR)/closure-lifetimes.Po -rm -f ./$(DEPDIR)/compile-c.Po -rm -f ./$(DEPDIR)/compile-cxx.Po -rm -f ./$(DEPDIR)/compile-header-only.Po -rm -f ./$(DEPDIR)/compile_iso_c99-compile-iso-c99.Po -rm -f ./$(DEPDIR)/connect-systemd-socket-activation.Po -rm -f ./$(DEPDIR)/connect-tcp.Po -rm -f ./$(DEPDIR)/connect-tcp6.Po -rm -f ./$(DEPDIR)/connect-unix.Po -rm -f ./$(DEPDIR)/connect_tls_certs-connect-tls.Po -rm -f ./$(DEPDIR)/connect_tls_certs-requires.Po -rm -f ./$(DEPDIR)/connect_tls_psk-connect-tls.Po -rm -f ./$(DEPDIR)/connect_tls_psk-requires.Po -rm -f ./$(DEPDIR)/connect_uri_nbd-connect-uri.Po -rm -f ./$(DEPDIR)/connect_uri_nbd-pick-a-port.Po -rm -f ./$(DEPDIR)/connect_uri_nbd-requires.Po -rm -f ./$(DEPDIR)/connect_uri_nbd_unix-connect-uri.Po -rm -f ./$(DEPDIR)/connect_uri_nbd_unix-pick-a-port.Po -rm -f ./$(DEPDIR)/connect_uri_nbd_unix-requires.Po -rm -f ./$(DEPDIR)/connect_uri_nbd_unix_uppercase-connect-uri.Po -rm -f ./$(DEPDIR)/connect_uri_nbd_unix_uppercase-pick-a-port.Po -rm -f ./$(DEPDIR)/connect_uri_nbd_unix_uppercase-requires.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_certs-connect-uri.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_certs-pick-a-port.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_certs-requires.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_psk-connect-uri.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_psk-pick-a-port.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_psk-requires.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_unix_certs-connect-uri.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_unix_certs-pick-a-port.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_unix_certs-requires.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_unix_psk-connect-uri.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_unix_psk-pick-a-port.Po -rm -f ./$(DEPDIR)/connect_uri_nbds_unix_psk-requires.Po -rm -f ./$(DEPDIR)/debug-environment.Po -rm -f ./$(DEPDIR)/debug.Po -rm -f ./$(DEPDIR)/dlopen-dlopen.Po -rm -f ./$(DEPDIR)/errors-bad-cookie.Po -rm -f ./$(DEPDIR)/errors-bitmask.Po -rm -f ./$(DEPDIR)/errors-client-oversize.Po -rm -f ./$(DEPDIR)/errors-client-unadvertised-cmd.Po -rm -f ./$(DEPDIR)/errors-client-unaligned.Po -rm -f ./$(DEPDIR)/errors-client-unknown-flags.Po -rm -f ./$(DEPDIR)/errors-client-zerosize.Po -rm -f ./$(DEPDIR)/errors-connect-null.Po -rm -f ./$(DEPDIR)/errors-connect-twice.Po -rm -f ./$(DEPDIR)/errors-enum.Po -rm -f ./$(DEPDIR)/errors-multiple-disconnects.Po -rm -f ./$(DEPDIR)/errors-name-too-long.Po -rm -f ./$(DEPDIR)/errors-not-connected.Po -rm -f ./$(DEPDIR)/errors-not-negotiating-aio.Po -rm -f ./$(DEPDIR)/errors-not-negotiating.Po 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-f ./$(DEPDIR)/opt-starttls.Po -rm -f ./$(DEPDIR)/opt-structured-twice.Po -rm -f ./$(DEPDIR)/opt_info-opt-info.Po -rm -f ./$(DEPDIR)/opt_list-opt-list.Po -rm -f ./$(DEPDIR)/opt_list-requires.Po -rm -f ./$(DEPDIR)/opt_set_meta-opt-set-meta.Po -rm -f ./$(DEPDIR)/opt_set_meta-requires.Po -rm -f ./$(DEPDIR)/pick-a-port.Po -rm -f ./$(DEPDIR)/pread-initialize.Po -rm -f ./$(DEPDIR)/private-data.Po -rm -f ./$(DEPDIR)/pwrite-extended.Po -rm -f ./$(DEPDIR)/read-only-flag.Po -rm -f ./$(DEPDIR)/read-write-flag.Po -rm -f ./$(DEPDIR)/requires.Po -rm -f ./$(DEPDIR)/server-death.Po -rm -f ./$(DEPDIR)/shutdown-flags.Po -rm -f ./$(DEPDIR)/shutdown-opt-mode.Po -rm -f ./$(DEPDIR)/socket-activation-name.Po -rm -f ./$(DEPDIR)/synch_parallel-synch-parallel.Po -rm -f ./$(DEPDIR)/synch_parallel_tls-synch-parallel.Po -rm -f Makefile maintainer-clean-am: distclean-am maintainer-clean-generic mostlyclean: mostlyclean-am mostlyclean-am: mostlyclean-compile mostlyclean-generic \ mostlyclean-libtool pdf: pdf-am pdf-am: ps: ps-am ps-am: uninstall-am: .MAKE: check-am install-am install-strip .PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-TESTS \ check-am clean clean-checkPROGRAMS clean-generic clean-libtool \ cscopelist-am ctags ctags-am distclean distclean-compile \ distclean-generic distclean-libtool distclean-local \ distclean-tags distdir dvi dvi-am html html-am info info-am \ install install-am install-data install-data-am install-dvi \ install-dvi-am install-exec install-exec-am install-html \ install-html-am install-info install-info-am install-man \ install-pdf install-pdf-am install-ps install-ps-am \ install-strip installcheck installcheck-am installdirs \ maintainer-clean maintainer-clean-generic mostlyclean \ mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ pdf pdf-am ps ps-am recheck tags tags-am uninstall \ uninstall-am .PRECIOUS: Makefile $(generator_built): $(top_builddir)/generator/stamp-generator $(top_builddir)/generator/stamp-generator: \ $(wildcard $(top_srcdir)/generator/*.ml) \ $(wildcard $(top_srcdir)/generator/*.mli) \ $(wildcard $(top_srcdir)/generator/states*.c) $(MAKE) -C $(top_builddir)/generator stamp-generator %.cmi: %.mli $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ %.cmo: %.ml $(OCAMLFIND) ocamlc $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ @HAVE_OCAMLOPT_TRUE@%.cmx: %.ml @HAVE_OCAMLOPT_TRUE@ $(OCAMLFIND) ocamlopt $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@ $(top_builddir)/podwrapper.pl: $(top_srcdir)/podwrapper.pl.in $(MAKE) -C $(top_builddir) podwrapper.pl # Even though we have a compile.c, we do not want make to create a 'compile' .PHONY: compile @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@pki/stamp-pki: $(srcdir)/make-pki.sh @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ rm -rf pki pki-t @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ SRCDIR=$(srcdir) CERTTOOL=$(CERTTOOL) $(srcdir)/make-pki.sh pki-t @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ mv pki-t pki @HAVE_CERTTOOL_TRUE@@HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@ touch pki/stamp-pki @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@keys.psk: @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ rm -f $@ $@-t @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ $(PSKTOOL) -u alice -p $@-t @HAVE_GNUTLS_TRUE@@HAVE_NBDKIT_TRUE@@HAVE_PSKTOOL_TRUE@ mv $@-t $@ @HAVE_NBDKIT_TRUE@distclean-local: distclean-local-tls @HAVE_NBDKIT_TRUE@distclean-local-tls: @HAVE_NBDKIT_TRUE@ rm -rf pki check-valgrind: LIBNBD_VALGRIND=1 $(MAKE) check # Tell versions [3.59,3.63) of GNU make to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: libnbd-1.20.3/tests/functions.sh.in0000644000175000017500000001452014600043406012622 # nbdkit # Common functions used by the tests. # @configure_input@ # Copyright Red Hat # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # # * Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # * Neither the name of Red Hat nor the names of its contributors may be # used to endorse or promote products derived from this software without # specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # Various variables defined by autoconf that test scripts might want # to use. abs_top_srcdir="@abs_top_srcdir@" NBDKIT="@NBDKIT@" PYTHON="@PYTHON@" QEMU_NBD="@QEMU_NBD@" QEMU_STORAGE_DAEMON="@QEMU_STORAGE_DAEMON@" REALPATH="@REALPATH@" # cleanup_fn cmd [args] # # Run the command ‘cmd [args]’ when the test script exits. This is # run in all cases when the script exits, so is a reliable way to # clean up test files, external processes etc. Cleanup hooks are run # in the order of registration. # # Examples: # cleanup_fn rm -f test.out # cleanup_fn kill $pid _cleanup_hook_count=0 cleanup_fn () { local _hook=_cleanup_hook$((_cleanup_hook_count++)) declare -ag $_hook eval $_hook'=("$@")' } _run_cleanup_hooks () { local _status=$? _i set +e trap '' INT QUIT TERM EXIT ERR echo $0: run cleanup hooks: exit code $_status for (( _i = 0; _i < $_cleanup_hook_count; ++_i )); do eval '"${_cleanup_hook'$_i'[@]}"' done exit $_status } trap _run_cleanup_hooks INT QUIT TERM EXIT ERR # requires program [args] # # Check that ‘program [args]’ works. If not, skip the test. # For example to check that qemu-img is available, do: # # requires qemu-img --version requires () { ( "$@" ) /dev/null 2>&1 || { echo "$0: ‘$*’ failed with error code $?" echo "$0: test prerequisite is missing or not working" exit 77 } } # Opposite of requires - the test must not succeed. requires_not () { if ( "$@" ) /dev/null 2>&1 ; then echo "$0: test prerequisite is missing or not working" exit 77 fi } # Test host kernel is Linux and minimum version. # # It's usually better to test features rather than using this, but # there are cases where testing features of the current kernel is too # hard. requires_linux_kernel_version () { local kver local min="$1" # Test the host kernel is Linux. requires test "$(uname -s)" = "Linux" # Test that it's the minimum version. # https://stackoverflow.com/a/24067243 requires cut --version requires sort -V /dev/null kver=$(uname -r | cut -d. -f1-2) requires test "$(printf "$kver\n$min" | sort -V | head -n 1)" = "$min" } # requires_fuse # # Check for fusermount3 and accessibility of /dev/fuse. That is not the best # way to check that it is going to work, but so far it is enough. requires_fuse () { requires test -r /dev/fuse requires fusermount3 --version } # requires_caps # # Check for linux capabilities. Parameters are in the form of "cap_name", e.g. # requires_caps cap_net_admin cap_chown # # This should be coupled with requires_root as it will not fail when capsh # utility from libcapng is not installed or the capabilities are not found in # /proc//status (to future-proof this against non-Linux platforms). requires_caps () { test -r /proc/$$/status || return 0 type capsh 2>/dev/null >&2 || return 0 local cap_eff local cap_str cap_eff="$(sed -n 's/CapEff:\s*\([^0-9a-fA-F]*\)/\1/p' /proc/$$/status)" test -z "$cap_eff" && return 0 cap_str=$(capsh --decode="$cap_eff") while test "$#" -gt 0; do if [[ ! "$cap_str" =~ [,=]$1(,|$) ]]; then echo "$0: test skipped because of missing capability: $1" exit 77 fi shift done } # Tests that use the vsock interface will fail if vsock is not # supported. On Linux you have to load the kernel module # vsock_loopback. See also # https://bugzilla.redhat.com/show_bug.cgi?id=2069558 requires_vsock_support () { if ! grep -q ^AF_VSOCK /proc/net/protocols || ! lsmod | grep -q ^vsock_loopback; then echo "$0: test skipped because AF_VSOCK is not supported." exit 77 fi } # Tests that run under check-root should use this. requires_root () { if test $(id -u) -ne 0; then echo "$0: test skipped because not running as root" echo "$0: use ‘sudo make check-root’ to run these tests" exit 77 fi } # pick_unused_port # # Picks and returns an "unused" port, setting the global variable # $port. # # This is inherently racy so we only use it where it's absolutely # necessary (eg. testing TLS because qemu cannot do TLS over a Unix # domain socket). pick_unused_port () { requires ss --version # Start at a random port to make it less likely that two parallel # tests will conflict. port=$(( 50000 + (RANDOM%15000) )) while ss -ltn | grep -sqE ":$port\b"; do ((port++)) if [ $port -eq 65000 ]; then port=50000; fi done echo picked unused port $port } # Wait for a server to start up and write a PID file. wait_for_pidfile () { local binary=$1 local pid=$2 for i in {1..60}; do if test -f $pid; then break fi sleep 1 done if ! test -f $pid; then echo "$0: $binary did not start up" exit 1 fi } libnbd-1.20.3/tests/aio-connect.c0000644000175000017500000000634014553312746012232 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test connecting to an IPv4 TCP port using nbd_aio_connect. */ #include #include #include #include #include #include #include #include #include #include #include "pick-a-port.h" #define PIDFILE "aio-connect.pid" int main (int argc, char *argv[]) { struct nbd_handle *nbd; int port = pick_a_port (); char port_str[16]; pid_t pid; size_t i; struct sockaddr_in addr; char *actual_uri, *expected_uri; unlink (PIDFILE); snprintf (port_str, sizeof port_str, "%d", port); pid = fork (); if (pid == -1) { perror ("fork"); exit (EXIT_FAILURE); } if (pid == 0) { execlp (NBDKIT, "nbdkit", "-f", "-p", port_str, "-P", PIDFILE, "--exit-with-parent", "null", NULL); perror ("nbdkit"); _exit (EXIT_FAILURE); } /* Wait for nbdkit to start listening. */ for (i = 0; i < 60; ++i) { if (access (PIDFILE, F_OK) == 0) break; sleep (1); } unlink (PIDFILE); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_supports_uri (nbd) != 1) { fprintf (stderr, "skip: compiled without URI support\n"); exit (77); } addr.sin_family = AF_INET; addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); addr.sin_port = htons (port); if (nbd_aio_connect (nbd, (struct sockaddr *)&addr, sizeof addr) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Wait until we have connected. */ while (!nbd_aio_is_ready (nbd)) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* libnbd should be able to construct a URI for this connection. */ if (asprintf (&expected_uri, "nbd://127.0.0.1:%s/", port_str) == -1) { perror ("asprintf"); exit (EXIT_FAILURE); } actual_uri = nbd_get_uri (nbd); if (actual_uri == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (strcmp (actual_uri, expected_uri) != 0) { fprintf (stderr, "%s: actual URI %s != expected URI %s\n", argv[0], actual_uri, expected_uri); exit (EXIT_FAILURE); } free (actual_uri); free (expected_uri); if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/pick-a-port.c0000644000175000017500000000361214525371754012163 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Pick an unused TCP port at random. * This is inherently racy so it's only best effort. */ #include #include #include #include #include #include #include #include "requires.h" #include "pick-a-port.h" static int port_is_used (int port) { char command[80]; int r; snprintf (command, sizeof command, "ss -ltn | grep -sqE ':%d\\b'", port); r = system (command); if (WIFEXITED (r) && WEXITSTATUS (r) == 0 /* used */) return 1; else /* Anything else, assume unused. */ return 0; } int pick_a_port (void) { int port; /* This requires the 'ss' utility, else we skip the whole test. */ requires ("ss --version"); /* Start from a random port number to make it less likely that two * parallel tests will conflict. */ srand (time (NULL) + getpid ()); port = 32768 + (rand () & 32767); /* Keep going until we find an unused port. */ while (port_is_used (port)) { port++; if (port == 65536) port = 32768; } printf ("picked unused port %d\n", port); fflush (stdout); return port; } libnbd-1.20.3/tests/pick-a-port.h0000644000175000017500000000163014525371754012166 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_PICK_A_PORT #define LIBNBD_PICK_A_PORT extern int pick_a_port (void); #endif /* LIBNBD_PICK_A_PORT */ libnbd-1.20.3/tests/requires.c0000644000175000017500000000700214675532407011671 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Check for a requirement or skip the test. */ #include #include #include #include #include #include "requires.h" void requires (const char *cmd) { printf ("requires %s\n", cmd); fflush (stdout); if (system (cmd) != 0) { printf ("Test skipped because prerequisite is missing or not working.\n"); exit (77); } } void requires_not (const char *cmd) { printf ("requires_not %s\n", cmd); fflush (stdout); if (system (cmd) == 0) { printf ("Test skipped because prerequisite is missing or not working.\n"); exit (77); } } void requires_not_exists (const char *filename) { printf ("requires_not_exists %s\n", filename); fflush (stdout); if (access (filename, F_OK) == 0) { printf ("Test skipped because file '%s' exists.\n", filename); exit (77); } } #ifdef QEMU_NBD /* Check qemu-nbd was compiled with support for TLS. */ void requires_qemu_nbd_tls_support (void) { char cmd[256]; /* Note the qemu-nbd command will fail in some way. We're only * interested in the error message that it prints. */ snprintf (cmd, sizeof cmd, "! " QEMU_NBD " --object tls-creds-x509,id=tls0 2>&1 \\\n" " | grep -sq 'TLS credentials support requires GNUTLS'\n"); requires (cmd); } /* Check qemu-nbd supports PSK (version 3.0.0 and above). */ void requires_qemu_nbd_tls_psk_support (void) { char cmd[256]; /* Note the qemu-nbd command will fail in some way. We're only * interested in the error message that it prints. */ snprintf (cmd, sizeof cmd, "! " QEMU_NBD " --object tls-creds-psk,id=tls0 / 2>&1 \\\n" " | grep -sq 'invalid object type'\n"); requires (cmd); } #else /* !QEMU_NBD */ void requires_qemu_nbd_tls_support (void) { fprintf (stderr, "qemu-nbd not available at compile time\n"); exit (77); } void requires_qemu_nbd_tls_psk_support (void) { fprintf (stderr, "qemu-nbd not available at compile time\n"); exit (77); } #endif #ifdef NBD_SERVER /* On some distros, nbd-server is built without support for syslog * which prevents use of inetd mode. Instead nbd-server will exit with * this error: * * Error: inetd mode requires syslog * Exiting. * * https://listman.redhat.com/archives/libguestfs/2022-January/msg00003.html */ void requires_nbd_server_supports_inetd (void) { char cmd[256]; snprintf (cmd, sizeof cmd, "\"%s\" --version", NBD_SERVER); requires (cmd); snprintf (cmd, sizeof cmd, "grep 'inetd mode requires syslog' \"$(command -v \"%s\")\"", NBD_SERVER); requires_not (cmd); } #else /* !NBD_SERVER */ void requires_nbd_server_supports_inetd (void) { fprintf (stderr, "nbd-server not available at compile time\n"); exit (77); } #endif libnbd-1.20.3/tests/requires.h0000644000175000017500000000232614675532407011702 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_REQUIRES #define LIBNBD_REQUIRES extern void requires (const char *cmd); extern void requires_not (const char *cmd); extern void requires_not_exists (const char *filename); /* Some specific tests using the requires() mechanism. */ extern void requires_qemu_nbd_tls_support (void); extern void requires_qemu_nbd_tls_psk_support (void); extern void requires_nbd_server_supports_inetd (void); #endif /* LIBNBD_REQUIRES */ libnbd-1.20.3/tests/aio-connect-port.c0000644000175000017500000000654714553312727013224 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test connecting to a fixed IPv4 TCP port (2000) using * nbd_aio_connect. This test is compiled but not normally run * because of the requirement for the fixed port number. * * See also: * https://listman.redhat.com/archives/libguestfs/2021-June/msg00205.html */ #include #include #include #include #include #include #include #include #include #include #define PIDFILE "aio-connect-port.pid" int main (int argc, char *argv[]) { struct nbd_handle *nbd; int port = 2000; const char *port_str = "2000"; pid_t pid; size_t i; struct sockaddr_in addr; char *actual_uri, *expected_uri; unlink (PIDFILE); pid = fork (); if (pid == -1) { perror ("fork"); exit (EXIT_FAILURE); } if (pid == 0) { execlp (NBDKIT, "nbdkit", "-f", "-p", port_str, "-P", PIDFILE, "--exit-with-parent", "null", NULL); perror ("nbdkit"); _exit (EXIT_FAILURE); } /* Wait for nbdkit to start listening. */ for (i = 0; i < 60; ++i) { if (access (PIDFILE, F_OK) == 0) break; sleep (1); } unlink (PIDFILE); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_supports_uri (nbd) != 1) { fprintf (stderr, "skip: compiled without URI support\n"); exit (77); } addr.sin_family = AF_INET; addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); addr.sin_port = htons (port); if (nbd_aio_connect (nbd, (struct sockaddr *)&addr, sizeof addr) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Wait until we have connected. */ while (!nbd_aio_is_ready (nbd)) { if (nbd_poll (nbd, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } /* libnbd should be able to construct a URI for this connection. */ if (asprintf (&expected_uri, "nbd://127.0.0.1:%s/", port_str) == -1) { perror ("asprintf"); exit (EXIT_FAILURE); } actual_uri = nbd_get_uri (nbd); if (actual_uri == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (strcmp (actual_uri, expected_uri) != 0) { fprintf (stderr, "%s: actual URI %s != expected URI %s\n", argv[0], actual_uri, expected_uri); exit (EXIT_FAILURE); } free (actual_uri); free (expected_uri); if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/aio-parallel.c0000644000175000017500000002402214525371754012375 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test asynchronous IO parallel data integrity. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "byte-swapping.h" /* We keep a shadow of the RAM disk so we can check integrity of the data. */ static char *ramdisk; /* Size of read and write buffer. */ #define BUFFERSIZE 16384 /* This is also defined in aio-parallel.sh and checked here. */ #define EXPORTSIZE (64*1024*1024) /* How long (seconds) that the test will run for. */ #define RUN_TIME 10 /* Number of threads and connections. */ #define NR_MULTI_CONN 8 /* Number of commands in flight per connection. */ #define MAX_IN_FLIGHT 64 #if BUFFERSIZE >= EXPORTSIZE / NR_MULTI_CONN / MAX_IN_FLIGHT #error "EXPORTSIZE too small" #endif /* Unix socket. */ static const char *unixsocket; struct thread_status { size_t i; /* Thread index, 0 .. NR_MULTI_CONN-1 */ time_t end_time; /* Threads run until this end time. */ /* Area assigned to this thread and command in flight. */ uint64_t offset[MAX_IN_FLIGHT], length[MAX_IN_FLIGHT]; int status; /* Return status. */ unsigned requests; /* Total number of requests made. */ unsigned most_in_flight; /* Most requests seen in flight. */ uint64_t bytes_sent, bytes_received; /* Bytes sent and received by thread. */ }; static void *start_thread (void *arg); static pthread_t threads[NR_MULTI_CONN]; static struct thread_status status[NR_MULTI_CONN]; int main (int argc, char *argv[]) { uint64_t i, j; time_t t; int err; unsigned requests, most_in_flight, errors; uint64_t bytes_sent, bytes_received; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } unixsocket = argv[1]; /* Get the current time and the end time. */ time (&t); t += RUN_TIME; srand (t + getpid ()); /* Initialize the RAM disk with the initial data from * nbdkit-pattern-filter. */ ramdisk = malloc (EXPORTSIZE); if (ramdisk == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } for (i = 0; i < EXPORTSIZE; i += 8) { uint64_t d = htobe64 (i); memcpy (&ramdisk[i], &d, sizeof d); } /* Start the worker threads, one per connection. */ for (i = 0; i < NR_MULTI_CONN; ++i) { status[i].i = i; status[i].end_time = t; for (j = 0; j < MAX_IN_FLIGHT; ++j) { status[i].offset[j] = (i * MAX_IN_FLIGHT + j) * EXPORTSIZE / NR_MULTI_CONN / MAX_IN_FLIGHT; status[i].length[j] = EXPORTSIZE / NR_MULTI_CONN / MAX_IN_FLIGHT; } status[i].status = 0; status[i].requests = 0; status[i].most_in_flight = 0; status[i].bytes_sent = status[i].bytes_received = 0; err = pthread_create (&threads[i], NULL, start_thread, &status[i]); if (err != 0) { errno = err; perror ("pthread_create"); exit (EXIT_FAILURE); } } /* Wait for the threads to exit. */ errors = 0; requests = 0; most_in_flight = 0; bytes_sent = bytes_received = 0; for (i = 0; i < NR_MULTI_CONN; ++i) { err = pthread_join (threads[i], NULL); if (err != 0) { errno = err; perror ("pthread_join"); exit (EXIT_FAILURE); } if (status[i].status != 0) { fprintf (stderr, "thread %" PRIu64 " failed with status %d\n", i, status[i].status); errors++; } requests += status[i].requests; if (status[i].most_in_flight > most_in_flight) most_in_flight = status[i].most_in_flight; bytes_sent += status[i].bytes_sent; bytes_received += status[i].bytes_received; } free (ramdisk); /* Print some stats. */ printf ("TLS: %s\n", #ifdef TLS "enabled" #else "disabled" #endif ); printf ("multi-conn: %d\n", NR_MULTI_CONN); printf ("max in flight permitted (per connection): %d\n", MAX_IN_FLIGHT); printf ("bytes sent: %" PRIu64 " (%g Mbytes/s)\n", bytes_sent, (double) bytes_sent / RUN_TIME / 1000000); printf ("bytes received: %" PRIu64 " (%g Mbytes/s)\n", bytes_received, (double) bytes_received / RUN_TIME / 1000000); printf ("I/O requests: %u (%g IOPS)\n", requests, (double) requests / RUN_TIME); printf ("max requests in flight: %u\n", most_in_flight); exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE); } struct command { char buf[BUFFERSIZE]; int64_t offset; /* -1 = slot not used */ int64_t cookie; int cmd; }; static struct command commands[NR_MULTI_CONN][MAX_IN_FLIGHT]; static void * start_thread (void *arg) { struct pollfd fds[1]; struct thread_status *status = arg; struct nbd_handle *nbd; size_t i; int64_t offset, cookie; char *buf; unsigned dir; int r, cmd; time_t t; bool expired = false; for (i = 0; i < MAX_IN_FLIGHT; ++i) commands[status->i][i].offset = -1; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #ifdef TLS /* Require TLS on the handle and fail if not available or if the * handshake fails. */ if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_tls_username (nbd, "alice") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_tls_psk_file (nbd, "keys.psk") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to nbdkit. */ if (nbd_connect_unix (nbd, unixsocket) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (nbd_get_size (nbd) == EXPORTSIZE); assert (nbd_can_multi_conn (nbd) > 0); assert (nbd_is_read_only (nbd) == 0); /* Issue commands. */ assert (nbd_aio_in_flight (nbd) == 0); while (!expired || nbd_aio_in_flight (nbd) > 0) { if (nbd_aio_is_dead (nbd) || nbd_aio_is_closed (nbd)) { fprintf (stderr, "thread %zu: connection is dead or closed\n", status->i); goto error; } /* Run until the timer expires. */ time (&t); if (t > status->end_time) { expired = true; if (nbd_aio_in_flight (nbd) <= 0) break; } /* If we can issue another request, do so. */ while (!expired && nbd_aio_in_flight (nbd) < MAX_IN_FLIGHT) { /* Find a free command slot. */ for (i = 0; i < MAX_IN_FLIGHT; ++i) if (commands[status->i][i].offset == -1) break; assert (i < MAX_IN_FLIGHT); buf = commands[status->i][i].buf; offset = status->offset[i] + (rand () % (status->length[i] - BUFFERSIZE)); cmd = rand () & 1; if (cmd == 0) { cookie = nbd_aio_pwrite (nbd, buf, BUFFERSIZE, offset, NBD_NULL_COMPLETION, 0); status->bytes_sent += BUFFERSIZE; memcpy (&ramdisk[offset], buf, BUFFERSIZE); } else { cookie = nbd_aio_pread (nbd, buf, BUFFERSIZE, offset, NBD_NULL_COMPLETION, 0); status->bytes_received += BUFFERSIZE; } if (cookie == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } commands[status->i][i].offset = offset; commands[status->i][i].cookie = cookie; commands[status->i][i].cmd = cmd; if (nbd_aio_in_flight (nbd) > status->most_in_flight) status->most_in_flight = nbd_aio_in_flight (nbd); } fds[0].fd = nbd_aio_get_fd (nbd); fds[0].events = 0; fds[0].revents = 0; dir = nbd_aio_get_direction (nbd); if ((dir & LIBNBD_AIO_DIRECTION_READ) != 0) fds[0].events |= POLLIN; if ((dir & LIBNBD_AIO_DIRECTION_WRITE) != 0) fds[0].events |= POLLOUT; if (poll (fds, 1, -1) == -1) { perror ("poll"); goto error; } if ((dir & LIBNBD_AIO_DIRECTION_READ) != 0 && (fds[0].revents & POLLIN) != 0) nbd_aio_notify_read (nbd); else if ((dir & LIBNBD_AIO_DIRECTION_WRITE) != 0 && (fds[0].revents & POLLOUT) != 0) nbd_aio_notify_write (nbd); /* If a command is ready to retire, retire it. */ for (i = 0; i < MAX_IN_FLIGHT; ++i) { if (commands[status->i][i].offset >= 0) { offset = commands[status->i][i].offset; cookie = commands[status->i][i].cookie; cmd = commands[status->i][i].cmd; buf = commands[status->i][i].buf; r = nbd_aio_command_completed (nbd, cookie); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } if (r) { if (cmd == 1 && memcmp (&ramdisk[offset], buf, BUFFERSIZE) != 0) { fprintf (stderr, "thread %zu: DATA INTEGRITY ERROR!\n", status->i); goto error; } commands[status->i][i].offset = -1; status->requests++; } } } } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } nbd_close (nbd); printf ("thread %zu: finished OK\n", status->i); status->status = 0; pthread_exit (status); error: fprintf (stderr, "thread %zu: failed\n", status->i); status->status = -1; pthread_exit (status); } libnbd-1.20.3/tests/aio-parallel-load.c0000644000175000017500000002222114525371754013311 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test an asynchronous random load. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* This is also defined in aio-parallel-load.sh and checked here. */ #define EXPORTSIZE (64*1024*1024) /* How long (seconds) that the test will run for. */ #define RUN_TIME 10 /* Number of threads and connections. */ #define NR_MULTI_CONN 8 /* Number of commands in flight per connection. */ #define MAX_IN_FLIGHT 64 /* Unix socket or uri. */ static const char *connection; struct thread_status { size_t i; /* Thread index, 0 .. NR_MULTI_CONN-1 */ time_t end_time; /* Threads run until this end time. */ size_t buf_size; /* Size of requests. */ int status; /* Return status. */ unsigned requests; /* Total number of requests made. */ unsigned most_in_flight; /* Most requests seen in flight. */ uint64_t bytes_sent, bytes_received; /* Bytes sent and received by thread. */ }; /* There's a single shared buffer for all requests, which is not * realistic, but this test is not about data integrity but the * protocol handling under load. */ static char *buf; static void *start_thread (void *arg); int main (int argc, char *argv[]) { pthread_t threads[NR_MULTI_CONN]; struct thread_status status[NR_MULTI_CONN]; size_t i; time_t t; int err; unsigned requests, most_in_flight, errors; uint64_t bytes_sent, bytes_received; size_t buf_size; if (argc < 2 || argc > 3) { fprintf (stderr, "%s socket [buf-size]\n", argv[0]); exit (EXIT_FAILURE); } connection = argv[1]; if (argc == 3) { char *end; errno = 0; buf_size = strtoul (argv[2], &end, 0); if (errno || argv[2] == end || buf_size == 0 || buf_size >= EXPORTSIZE) { fprintf (stderr, "invalid buf-size %s, must be positive integer < %d\n", argv[2], EXPORTSIZE); exit (EXIT_FAILURE); } } else buf_size = 64 * 1024; buf = malloc (buf_size); if (!buf) { perror ("malloc"); exit (EXIT_FAILURE); } /* Get the current time and the end time. */ time (&t); t += RUN_TIME; /* Initialize the buffer with random data. */ srand (t + getpid ()); for (i = 0; i < buf_size; ++i) buf[i] = rand (); /* Start the worker threads, one per connection. */ for (i = 0; i < NR_MULTI_CONN; ++i) { status[i].i = i; status[i].end_time = t; status[i].buf_size = buf_size; status[i].status = 0; status[i].requests = 0; status[i].most_in_flight = 0; status[i].bytes_sent = status[i].bytes_received = 0; err = pthread_create (&threads[i], NULL, start_thread, &status[i]); if (err != 0) { errno = err; perror ("pthread_create"); exit (EXIT_FAILURE); } } /* Wait for the threads to exit. */ errors = 0; requests = 0; most_in_flight = 0; bytes_sent = bytes_received = 0; for (i = 0; i < NR_MULTI_CONN; ++i) { err = pthread_join (threads[i], NULL); if (err != 0) { errno = err; perror ("pthread_join"); exit (EXIT_FAILURE); } if (status[i].status != 0) { fprintf (stderr, "thread %zu failed with status %d\n", i, status[i].status); errors++; } requests += status[i].requests; if (status[i].most_in_flight > most_in_flight) most_in_flight = status[i].most_in_flight; bytes_sent += status[i].bytes_sent; bytes_received += status[i].bytes_received; } /* Print some stats. */ printf ("TLS: %s\n", #ifdef TLS "enabled" #else "disabled" #endif ); printf ("multi-conn: %d\n", NR_MULTI_CONN); printf ("max in flight permitted (per connection): %d\n", MAX_IN_FLIGHT); printf ("bytes sent: %" PRIu64 " (%g Mbytes/s)\n", bytes_sent, (double) bytes_sent / RUN_TIME / 1000000); printf ("bytes received: %" PRIu64 " (%g Mbytes/s)\n", bytes_received, (double) bytes_received / RUN_TIME / 1000000); printf ("I/O requests: %u (%g IOPS)\n", requests, (double) requests / RUN_TIME); printf ("max requests in flight: %u\n", most_in_flight); exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE); } static void * start_thread (void *arg) { struct pollfd fds[1]; struct thread_status *status = arg; size_t buf_size = status->buf_size; struct nbd_handle *nbd; size_t i; uint64_t offset; int64_t cookie; int64_t cookies[MAX_IN_FLIGHT] = { 0 }; unsigned dir; int r, cmd; time_t t; bool expired = false; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #ifdef TLS /* Require TLS on the handle and fail if not available or if the * handshake fails. */ if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_tls_username (nbd, "alice") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_tls_psk_file (nbd, "keys.psk") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to nbdkit. */ if (strstr (connection, "://")) { if (nbd_connect_uri (nbd, connection) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } else if (nbd_connect_unix (nbd, connection) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (nbd_get_size (nbd) == EXPORTSIZE); assert (nbd_can_multi_conn (nbd) > 0); assert (nbd_is_read_only (nbd) == 0); /* Issue commands. */ assert (nbd_aio_in_flight (nbd) == 0); while (!expired || nbd_aio_in_flight (nbd) > 0) { if (nbd_aio_is_dead (nbd) || nbd_aio_is_closed (nbd)) { fprintf (stderr, "thread %zu: connection is dead or closed\n", status->i); goto error; } /* Run until the timer expires. */ time (&t); if (t > status->end_time) { expired = true; if (nbd_aio_in_flight (nbd) <= 0) break; } /* If we can issue another request, do so. */ while (!expired && nbd_aio_in_flight (nbd) < MAX_IN_FLIGHT) { offset = rand () % (EXPORTSIZE - buf_size); cmd = rand () & 1; if (cmd == 0) { cookie = nbd_aio_pwrite (nbd, buf, buf_size, offset, NBD_NULL_COMPLETION, 0); status->bytes_sent += buf_size; } else { cookie = nbd_aio_pread (nbd, buf, buf_size, offset, NBD_NULL_COMPLETION, 0); status->bytes_received += buf_size; } if (cookie == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } for (i = 0; i < MAX_IN_FLIGHT; i++) { if (cookies[i] == 0) { cookies[i] = cookie; break; } } if (nbd_aio_in_flight (nbd) > status->most_in_flight) status->most_in_flight = nbd_aio_in_flight (nbd); } fds[0].fd = nbd_aio_get_fd (nbd); fds[0].events = 0; fds[0].revents = 0; dir = nbd_aio_get_direction (nbd); if ((dir & LIBNBD_AIO_DIRECTION_READ) != 0) fds[0].events |= POLLIN; if ((dir & LIBNBD_AIO_DIRECTION_WRITE) != 0) fds[0].events |= POLLOUT; if (poll (fds, 1, -1) == -1) { perror ("poll"); goto error; } if ((dir & LIBNBD_AIO_DIRECTION_READ) != 0 && (fds[0].revents & POLLIN) != 0) nbd_aio_notify_read (nbd); else if ((dir & LIBNBD_AIO_DIRECTION_WRITE) != 0 && (fds[0].revents & POLLOUT) != 0) nbd_aio_notify_write (nbd); /* If a command is ready to retire, retire it. */ for (i = 0; i < MAX_IN_FLIGHT; ++i) { if (cookies[i] == 0) continue; r = nbd_aio_command_completed (nbd, cookies[i]); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } if (r) { cookies[i] = 0; status->requests++; } } } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } nbd_close (nbd); printf ("thread %zu: finished OK\n", status->i); status->status = 0; pthread_exit (status); error: fprintf (stderr, "thread %zu: failed\n", status->i); status->status = -1; pthread_exit (status); } libnbd-1.20.3/tests/eflags.c0000644000175000017500000000612414553313206011264 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Simple end-to-end test of flags. */ #include #include #include #include #include #include "requires.h" #ifndef value #define value true #endif #define native 2 #define none 3 /* https://stackoverflow.com/a/1489985 */ #define XNBD_FLAG_FUNCTION(f) nbd_ ## f #define NBD_FLAG_FUNCTION(f) XNBD_FLAG_FUNCTION (f) #define XSTR(x) #x #define STR(x) XSTR (x) int main (int argc, char *argv[]) { struct nbd_handle *nbd; int r, expected; char plugin_path[256]; char key_param[32]; #ifdef requirement requires (NBDKIT " --dump-plugin sh | grep -q " requirement); #endif snprintf (plugin_path, sizeof plugin_path, "%s/eflags-plugin.sh", getenv ("srcdir") ? : "."); snprintf (key_param, sizeof key_param, "key=%s", STR (flag)); char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", #ifdef filter filter, #endif "sh", plugin_path, key_param, #if value == true "print=", "rc=0", #elif value == false "print=", "rc=3", #elif value == native "print=native", "rc=0", #elif value == none "print=none", "rc=0", #else #error "unknown value" #endif NULL }; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #ifdef no_sr if (nbd_set_request_structured_replies (nbd, false) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #if value == true expected = 1; #elif value == false expected = 0; #elif value == native /* can_fua=native should return true */ expected = 1; #elif value == none /* can_fua=none should return false */ expected = 0; #else #error "unknown value" #endif if ((r = NBD_FLAG_FUNCTION (flag) (nbd)) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != expected) { fprintf (stderr, "%s: test failed: unexpected %s flag: " "actual=%d, expected=%d\n", argv[0], STR (flag), r, expected); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/close-null.c0000644000175000017500000000201614525371754012107 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Check that nbd_close (NULL) works. */ #include #include #include #include int main (int argc, char *argv[]) { /* This should be ignored. */ nbd_close (NULL); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/closure-lifetimes.c0000644000175000017500000001551614616437241013471 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test closure lifetimes. */ #include #include #include #include #include #include static char *nbdkit[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "null", "size=512", NULL }; static char *nbdkit_delay[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "--filter=delay", "null", "size=512", "delay-read=10", NULL }; static unsigned debug_fn_called; static unsigned debug_fn_freed; static unsigned read_cb_called; static unsigned read_cb_freed; static unsigned block_status_cb_called; static unsigned block_status_cb_freed; static unsigned completion_cb_called; static unsigned completion_cb_freed; static int debug_fn (void *opaque, const char *context, const char *msg) { debug_fn_called++; return 0; } static void debug_fn_free (void *opaque) { debug_fn_freed++; } static int read_cb (void *opaque, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error) { assert (!read_cb_freed); assert (!completion_cb_called); read_cb_called++; return 0; } static void read_cb_free (void *opaque) { assert (!completion_cb_freed); read_cb_freed++; } static int block_status_cb (void *opaque, const char *meta, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error) { assert (!block_status_cb_freed); assert (!completion_cb_called); block_status_cb_called++; return 0; } static void block_status_cb_free (void *opaque) { assert (!completion_cb_freed); block_status_cb_freed++; } static int completion_cb (void *opaque, int *error) { assert (!completion_cb_freed); completion_cb_called++; return 0; } static void completion_cb_free (void *opaque) { completion_cb_freed++; } #define NBD_ERROR \ do { \ fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); \ exit (EXIT_FAILURE); \ } while (0) int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t cookie; char buf[512]; nbd_debug_callback debug_callback = { .callback = debug_fn, .free = debug_fn_free }; nbd_chunk_callback chunk_callback = { .callback = read_cb, .free = read_cb_free }; nbd_extent_callback extent_callback = { .callback = block_status_cb, .free = block_status_cb_free }; nbd_completion_callback completion_callback = { .callback = completion_cb, .free = completion_cb_free }; /* Check debug functions are freed when a new debug function is * registered, and when the handle is closed. */ nbd = nbd_create (); if (nbd == NULL) NBD_ERROR; nbd_set_debug_callback (nbd, debug_callback); assert (debug_fn_freed == 0); nbd_set_debug_callback (nbd, debug_callback); assert (debug_fn_freed == 1); debug_fn_freed = 0; nbd_close (nbd); assert (debug_fn_freed == 1); /* Test command callbacks are freed when the command is retired. */ nbd = nbd_create (); if (nbd == NULL) NBD_ERROR; if (nbd_connect_command (nbd, nbdkit) == -1) NBD_ERROR; cookie = nbd_aio_pread_structured (nbd, buf, sizeof buf, 0, chunk_callback, completion_callback, 0); if (cookie == -1) NBD_ERROR; /* read_cb_called is indeterminate at this point, as state machine * progress may vary based on task schduling and network speed factors. */ assert (completion_cb_called == 0); assert (read_cb_freed == 0); assert (completion_cb_freed == 0); while (!nbd_aio_command_completed (nbd, cookie)) { if (nbd_poll (nbd, -1) == -1) NBD_ERROR; } assert (read_cb_called == 1); assert (completion_cb_called == 1); assert (read_cb_freed == 1); assert (completion_cb_freed == 1); nbd_kill_subprocess (nbd, 0); nbd_close (nbd); /* Test command callbacks are freed if the handle is closed without * running the commands. */ read_cb_called = read_cb_freed = completion_cb_called = completion_cb_freed = 0; nbd = nbd_create (); if (nbd == NULL) NBD_ERROR; if (nbd_connect_command (nbd, nbdkit_delay) == -1) NBD_ERROR; cookie = nbd_aio_pread_structured (nbd, buf, sizeof buf, 0, chunk_callback, completion_callback, 0); if (cookie == -1) NBD_ERROR; nbd_kill_subprocess (nbd, 0); nbd_close (nbd); /* read_cb_called is indeterminate based on timing of kill. */ assert (completion_cb_called == 1); assert (read_cb_freed == 1); assert (completion_cb_freed == 1); /* Test command callbacks are freed if the command fails client-side, * whether from calling in wrong state or because of no server support. */ block_status_cb_called = block_status_cb_freed = completion_cb_called = completion_cb_freed = 0; nbd = nbd_create (); if (nbd == NULL) NBD_ERROR; /* Intentionally omit a call to: * nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION); */ cookie = nbd_aio_block_status (nbd, sizeof buf, 0, extent_callback, completion_callback, 0); if (cookie != -1) { fprintf (stderr, "%s: Expecting block_status failure\n", argv[0]); exit (EXIT_FAILURE); } assert (block_status_cb_called == 0); assert (completion_cb_called == 0); assert (block_status_cb_freed == 1); assert (completion_cb_freed == 1); block_status_cb_called = block_status_cb_freed = completion_cb_called = completion_cb_freed = 0; if (nbd_connect_command (nbd, nbdkit) == -1) NBD_ERROR; cookie = nbd_aio_block_status (nbd, sizeof buf, 0, extent_callback, completion_callback, 0); if (cookie != -1) { fprintf (stderr, "%s: Expecting block_status failure\n", argv[0]); exit (EXIT_FAILURE); } assert (block_status_cb_called == 0); assert (completion_cb_called == 0); assert (block_status_cb_freed == 1); assert (completion_cb_freed == 1); nbd_kill_subprocess (nbd, 0); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/compile-c.c0000644000175000017500000000215414525371754011705 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Compile, open and close a handle. */ #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/compile-cxx.cpp0000644000175000017500000000242514525371754012626 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test compilation with C++. */ #ifndef __cplusplus #error "this test should be compiled with a C++ compiler" #endif #include #include #include using namespace std; int main () { struct nbd_handle *nbd; nbd = nbd_create (); if (nbd == NULL) { cerr << nbd_get_error () << endl; exit (EXIT_FAILURE); } cout << nbd_get_package_name (nbd) << " " << nbd_get_version (nbd) << endl; nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/compile-header-only.c0000644000175000017500000000165114525371754013673 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Check that does not require any other headers. */ #include int main (int argc, char *argv[]) { return 0; } libnbd-1.20.3/tests/compile-iso-c99.c0000644000175000017500000000222714525371754012660 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test that (only simple) programs can be compiled by an ISO C99 * compiler. */ #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/connect-systemd-socket-activation.c0000644000175000017500000000331114553313053016562 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test connecting using systemd socket activation. */ #include #include #include #include #include #include "requires.h" int main (int argc, char *argv[]) { char *args[] = { NBDKIT, "-f", "memory", "size=1m", NULL }; struct nbd_handle *nbd; char *uri = NULL; int result = EXIT_FAILURE; requires (NBDKIT " --version"); requires (NBDKIT " memory --version"); printf ("Connecting via systemd socket activation...\n"); nbd = nbd_create (); if (nbd == NULL) goto out; if (nbd_connect_systemd_socket_activation (nbd, args) == -1) goto out; /* Libnbd creates unix socket internally, but this is not documented yet. */ uri = nbd_get_uri (nbd); printf ("Connected to %s\n", uri); result = EXIT_SUCCESS; out: if (result == EXIT_FAILURE) fprintf (stderr, "%s\n", nbd_get_error ()); free (uri); nbd_close (nbd); exit (result); } libnbd-1.20.3/tests/connect-tcp.c0000644000175000017500000000536114553313070012241 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test connecting to a TCP port. */ #include #include #include #include #include #include #include #include "pick-a-port.h" #define PIDFILE "connect-tcp.pid" int main (int argc, char *argv[]) { struct nbd_handle *nbd; int port = pick_a_port (); char port_str[16]; pid_t pid; size_t i; char *actual_uri, *expected_uri; unlink (PIDFILE); snprintf (port_str, sizeof port_str, "%d", port); pid = fork (); if (pid == -1) { perror ("fork"); exit (EXIT_FAILURE); } if (pid == 0) { execlp (NBDKIT, "nbdkit", "-f", "-p", port_str, "-P", PIDFILE, "--exit-with-parent", "null", NULL); perror ("nbdkit"); _exit (EXIT_FAILURE); } /* Wait for nbdkit to start listening. */ for (i = 0; i < 60; ++i) { if (access (PIDFILE, F_OK) == 0) break; sleep (1); } unlink (PIDFILE); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_tcp (nbd, "localhost", port_str) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_supports_uri (nbd) == 1) { /* libnbd should be able to construct a URI for this connection. */ if (asprintf (&expected_uri, "nbd://localhost:%s/", port_str) == -1) { perror ("asprintf"); exit (EXIT_FAILURE); } actual_uri = nbd_get_uri (nbd); if (actual_uri == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (strcmp (actual_uri, expected_uri) != 0) { fprintf (stderr, "%s: actual URI %s != expected URI %s\n", argv[0], actual_uri, expected_uri); exit (EXIT_FAILURE); } free (actual_uri); free (expected_uri); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/connect-tcp6.c0000644000175000017500000000545014553313106012326 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test connecting to a TCP port over IPv6. * This is mainly a test of URIs. */ #include #include #include #include #include #include #include #include "pick-a-port.h" #include "requires.h" #define PIDFILE "connect-tcp6.pid" int main (int argc, char *argv[]) { struct nbd_handle *nbd; int port = pick_a_port (); char port_str[16]; pid_t pid; size_t i; char uri[64], *get_uri; /* Check the host supports IPv6. */ requires ("ip -o -6 addr show scope host | grep inet6"); unlink (PIDFILE); snprintf (port_str, sizeof port_str, "%d", port); snprintf (uri, sizeof uri, "nbd://[::1]:%d/", port); pid = fork (); if (pid == -1) { perror ("fork"); exit (EXIT_FAILURE); } if (pid == 0) { execlp (NBDKIT, "nbdkit", "-fv", "-p", port_str, "-P", PIDFILE, "--exit-with-parent", "null", NULL); perror ("nbdkit"); _exit (EXIT_FAILURE); } /* Wait for nbdkit to start listening. */ for (i = 0; i < 60; ++i) { if (access (PIDFILE, F_OK) == 0) break; sleep (1); } unlink (PIDFILE); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_supports_uri (nbd) != 1) { fprintf (stderr, "skip: compiled without URI support\n"); exit (77); } if (nbd_connect_uri (nbd, uri) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* libnbd should be able to construct a URI for this connection. */ get_uri = nbd_get_uri (nbd); if (get_uri == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (strcmp (uri, get_uri) != 0) { fprintf (stderr, "%s: actual URI %s != expected URI %s\n", argv[0], uri, get_uri); exit (EXIT_FAILURE); } free (get_uri); if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/connect-tls.c0000644000175000017500000000563414553313127012263 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test connecting over TLS to nbdkit. */ #include #include #include #include #include #include #include #include #include #include "requires.h" int main (int argc, char *argv[]) { struct nbd_handle *nbd; char buf[512]; int64_t actual_size; /* Check --tls-verify-peer option is supported. */ requires (NBDKIT " --tls-verify-peer -U - null --run 'exit 0'"); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Require TLS on the handle and fail if not available or if the * handshake fails. */ if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_tls_username (nbd, "alice") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #if CERTS if (nbd_set_tls_certificates (nbd, "pki") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #elif PSK if (nbd_set_tls_psk_file (nbd, "keys.psk") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Run nbdkit as a subprocess. */ char *args[] = { NBDKIT, "-s", "--exit-with-parent", "--tls=require", "--tls-verify-peer", #if CERTS "--tls-certificates=pki", #elif PSK "--tls-psk=keys.psk", #endif "pattern", "size=1M", NULL }; if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } actual_size = nbd_get_size (nbd); if (actual_size != 1024 * 1024) { fprintf (stderr, "%s: actual size %" PRIi64 " != expected size", argv[0], actual_size); exit (EXIT_FAILURE); } if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/connect-unix.c0000644000175000017500000000543214553313141012434 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test connecting over a Unix domain socket. */ #include #include #include #include #include #include #include #define PIDFILE "connect-unix.pid" int main (int argc, char *argv[]) { char socket[] = "/tmp/connect-unix-sock-XXXXXX"; struct nbd_handle *nbd; pid_t pid; size_t i; char *actual_uri, *expected_uri; if (mkstemp (socket) == -1) { perror (socket); exit (EXIT_FAILURE); } unlink (socket); unlink (PIDFILE); pid = fork (); if (pid == -1) { perror ("fork"); exit (EXIT_FAILURE); } if (pid == 0) { execlp (NBDKIT, "nbdkit", "-f", "-U", socket, "-P", PIDFILE, "--exit-with-parent", "null", NULL); perror ("nbdkit"); _exit (EXIT_FAILURE); } /* Wait for nbdkit to start listening. */ for (i = 0; i < 60; ++i) { if (access (PIDFILE, F_OK) == 0) break; sleep (1); } unlink (PIDFILE); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_unix (nbd, socket) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_supports_uri (nbd) == 1) { /* libnbd should be able to construct a URI for this connection. */ if (asprintf (&expected_uri, "nbd+unix:///?socket=%s", socket) == -1) { perror ("asprintf"); exit (EXIT_FAILURE); } actual_uri = nbd_get_uri (nbd); if (actual_uri == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (strcmp (actual_uri, expected_uri) != 0) { fprintf (stderr, "%s: actual URI %s != expected URI %s\n", argv[0], actual_uri, expected_uri); exit (EXIT_FAILURE); } free (actual_uri); free (expected_uri); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); unlink (socket); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/connect-uri.c0000644000175000017500000001464514616437241012266 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test connecting over an NBD URI. */ #include #include #include #include #include #include #include #include #include #include #include "pick-a-port.h" #include "requires.h" #ifdef DEFINE_STR_AS_UNIX_SOCKET static char str[] = "/tmp/nbdXXXXXX"; static void unlink_unix_socket (void) { unlink (str); } #endif #ifdef DEFINE_STR_AS_PORT static char str[] = "12345"; #endif static int compare_uris (const char *uri1, const char *uri2); int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *s; char *pidfile; pid_t pid; size_t i; char *get_uri; char *uri; /* If SERVER_PARAMS contains --tls-verify-peer we must make sure * that nbdkit supports that option. */ #ifdef REQUIRES_NBDKIT_TLS_VERIFY_PEER requires (NBDKIT " --tls-verify-peer -U - null --run 'exit 0'"); #endif #ifdef DEFINE_STR_AS_UNIX_SOCKET int fd = mkstemp (str); if (fd == -1 || close (fd) == -1) { perror (str); exit (EXIT_FAILURE); } /* We have to remove the temporary file first, since we will create * a socket in its place, and ensure the socket is removed on exit. */ unlink_unix_socket (); atexit (unlink_unix_socket); #endif #ifdef DEFINE_STR_AS_PORT int port = pick_a_port (); snprintf (str, sizeof str, "%d", port); #endif if (asprintf (&uri, URI) == -1) { perror ("asprintf"); exit (EXIT_FAILURE); } /* Generate a PID file (for nbdkit -P) derived from the basename of * the current binary, which is unique for each test. */ s = strrchr (argv[0], '/'); if (s) s++; else s = argv[0]; if (asprintf (&pidfile, "%s.pid", s) == -1) { perror ("asprintf"); exit (EXIT_FAILURE); } if (strstr (pidfile, "connect") == NULL) abort (); unlink (pidfile); pid = fork (); if (pid == -1) { perror ("fork"); exit (EXIT_FAILURE); } if (pid == 0) { execlp (NBDKIT, "nbdkit", "-f", "-v", "--exit-with-parent", // "-D", "nbdkit.tls.log=99", "-P", pidfile, SERVER_PARAMS, "null", NULL); perror ("nbdkit"); _exit (EXIT_FAILURE); } /* Wait for nbdkit to start listening. */ for (i = 0; i < 60; ++i) { if (access (pidfile, F_OK) == 0) break; sleep (1); } unlink (pidfile); free (pidfile); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_supports_uri (nbd) != 1) { fprintf (stderr, "skip: compiled without URI support\n"); exit (77); } nbd_set_uri_allow_local_file (nbd, true); if (nbd_connect_uri (nbd, uri) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Check we negotiated the right kind of connection. */ if (strncmp (uri, "nbds", 4) == 0) { if (! nbd_get_tls_negotiated (nbd)) { fprintf (stderr, "%s: failed to negotiate a TLS connection\n", argv[0]); exit (EXIT_FAILURE); } } /* Usually the URI returned by nbd_get_uri should be the same as the * one passed to nbd_connect_uri, or at least it will be in our test * cases. */ get_uri = nbd_get_uri (nbd); if (get_uri == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (compare_uris (uri, get_uri) != 0) { fprintf (stderr, "%s: connect URI %s != get URI %s\n", argv[0], uri, get_uri); exit (EXIT_FAILURE); } free (get_uri); if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); free (uri); exit (EXIT_SUCCESS); } #ifdef HAVE_STRCASESTR #define case_insensitive_substring(s1, s2) (strcasestr ((s1), (s2)) != NULL) #else static int case_insensitive_substring (const char *haystack, const char *needle) { /* strcasestr was implemented first in GNU libc, and later added to * FreeBSD and OpenBSD. However it is not in POSIX so far. * * Don't use this as a general replacement for strcasestr. It's not * unicode safe, nor efficient, so only suitable for this test. */ char *s1 = strdup (haystack); char *s2 = strdup (needle); size_t i, n; int r; if (!s1 || !s2) abort (); n = strlen (s1); for (i = 0; i < n; ++i) s1[i] = tolower (s1[i]); n = strlen (s2); for (i = 0; i < n; ++i) s2[i] = tolower (s2[i]); r = strstr (s1, s2) != NULL; free (s1); free (s2); return r; } #endif /* Naive comparison of two URIs, enough to get the tests to pass but * it does not take into account things like quoting. The difference * between the URI we set and the one we read back is the order of * query fields. */ static int compare_uris (const char *uri1, const char *uri2) { size_t n; int r; /* Compare the parts before the query fields. */ n = strcspn (uri1, "?"); r = strncasecmp (uri1, uri2, n); if (r != 0) return r; if (strlen (uri1) == n) return 0; uri1 += n + 1; uri2 += n + 1; /* Compare each query field in the first URI and ensure it appears * in the second URI. Note the first URI is the one we passed to * libnbd, we're not worried about extra fields in the second URI. */ while (*uri1) { char *q; n = strcspn (uri1, "&"); q = strndup (uri1, n); if (q == NULL) { perror ("strndup"); exit (EXIT_FAILURE); } if (case_insensitive_substring (uri2, q)) r = 0; else { fprintf (stderr, "error: compare_uris: query string '%s' does not appear " "in returned URI\n", q); r = 1; } free (q); if (r != 0) return r; if (strlen (uri1) == n) return 0; uri1 += n + 1; } return 0; } libnbd-1.20.3/tests/debug.c0000644000175000017500000000332514525371754011124 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test setting and reading the debug flag. */ #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; int r; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_set_debug (nbd, true); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_get_debug (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (r == 1); r = nbd_set_debug (nbd, false); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_get_debug (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (r == 0); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/debug-environment.c0000644000175000017500000000316214525371754013465 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Check that LIBNBD_DEBUG=0|1 affects the debug flag. */ #include #include #include #include #include static int get_debug_flag (void) { struct nbd_handle *nbd; int r; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_get_debug (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); return r; } int main (int argc, char *argv[]) { setenv ("LIBNBD_DEBUG", "1", 1); assert (get_debug_flag () == 1); setenv ("LIBNBD_DEBUG", "0", 1); assert (get_debug_flag () == 0); setenv ("LIBNBD_DEBUG", "", 1); assert (get_debug_flag () == 0); unsetenv ("LIBNBD_DEBUG"); assert (get_debug_flag () == 0); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/dlopen.c0000644000175000017500000001017214525371754011315 /* libnbd * Copyright Red Hat * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ /* Test the library can be loaded and unloaded using dlopen etc. * * We do this from a thread because of this problem identified in * libvirt: * https://lists.nongnu.org/archive/html/qemu-block/2021-04/msg00828.html */ #include #include #include #include #include #include #include #include /* Define these so we don't have to include . */ struct nbd_handle; typedef struct nbd_handle *(*nbd_create_t) (void); typedef void (*nbd_close_t) (struct nbd_handle *h); typedef const char *(*nbd_get_error_t) (void); typedef char *(*nbd_get_handle_name_t) (struct nbd_handle *h); typedef int64_t (*nbd_get_size_t) (struct nbd_handle *h); #ifndef LIBRARY #error "-DLIBRARY was not defined" #endif static const char *progname; static void *thread_start (void *arg); static void *read_symbol (void *lib, const char *symbol); int main (int argc, char *argv[]) { pthread_t thread; int r; progname = argv[0]; if (access (LIBRARY, X_OK) == -1) { fprintf (stderr, "%s: test skipped because %s cannot be accessed: %m\n", progname, LIBRARY); exit (77); } r = pthread_create (&thread, NULL, thread_start, NULL); if (r != 0) { errno = r; fprintf (stderr, "%s: pthread_create failed: %m\n", progname); exit (EXIT_FAILURE); } r = pthread_join (thread, NULL); if (r != 0) { errno = r; fprintf (stderr, "%s: pthread_join failed: %m\n", progname); exit (EXIT_FAILURE); } exit (EXIT_SUCCESS); } static void * thread_start (void *arg) { void *lib; nbd_create_t nbd_create; nbd_close_t nbd_close; nbd_get_error_t nbd_get_error; nbd_get_handle_name_t nbd_get_handle_name; nbd_get_size_t nbd_get_size; struct nbd_handle *h; char *name; lib = dlopen (LIBRARY, RTLD_LAZY); if (lib == NULL) { fprintf (stderr, "%s: could not open %s: %s", progname, LIBRARY, dlerror ()); exit (EXIT_FAILURE); } nbd_create = read_symbol (lib, "nbd_create"); nbd_close = read_symbol (lib, "nbd_close"); nbd_get_error = read_symbol (lib, "nbd_get_error"); nbd_get_handle_name = read_symbol (lib, "nbd_get_handle_name"); nbd_get_size = read_symbol (lib, "nbd_get_size"); /* Create a handle and try out some operations. */ h = nbd_create (); if (h == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } name = nbd_get_handle_name (h); printf ("handle name = \"%s\"\n", name); free (name); /* This deliberately is an error because I want to check that we * don't try to free the thread-local error string by calling a * function in the dlclosed (unmapped) library. */ if (nbd_get_size (h) != -1) { fprintf (stderr, "%s: expected nbd_get_size to return an error\n", progname); exit (EXIT_FAILURE); } printf ("expected error string = \"%s\"\n", nbd_get_error ()); nbd_close (h); if (dlclose (lib) != 0) { fprintf (stderr, "%s: could not close %s: %s\n", progname, LIBRARY, dlerror ()); exit (EXIT_FAILURE); } return NULL; } static void * read_symbol (void *lib, const char *symbol) { void *symval; const char *err; dlerror (); /* Clear error indicator. */ symval = dlsym (lib, symbol); if ((err = dlerror ()) != NULL) { fprintf (stderr, "could not read symbol: %s: %s\n", symbol, err); exit (EXIT_FAILURE); } return symval; } libnbd-1.20.3/tests/errors-bad-cookie.c0000644000175000017500000000474014553313217013336 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include static char *progname; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Check for status of a bogus cookie */ if (nbd_aio_command_completed (nbd, 0) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_command_completed on bogus cookie did not fail\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_command_completed: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-bitmask.c0000644000175000017500000000345714525371754013010 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include static char *progname; int main (int argc, char *argv[]) { struct nbd_handle *nbd; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Attempt to set a bitmask with an unknown bit. */ if (nbd_set_handshake_flags (nbd, LIBNBD_HANDSHAKE_FLAG_MASK + 1) != -1) { fprintf (stderr, "%s: test failed: " "nbd_set_handshake_flags did not reject invalid bitmask\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_get_handshake_flags (nbd) != LIBNBD_HANDSHAKE_FLAG_MASK) { fprintf (stderr, "%s: test failed: " "nbd_get_handshake_flags not left at default value\n", argv[0]); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-client-oversize.c0000644000175000017500000000654514553313237014472 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include "requires.h" #define MAXSIZE 68157440 /* 65M, oversize on purpose */ static char *progname; static char buf[MAXSIZE]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "68157440", "--filter=blocksize-policy", "blocksize-maximum=32M", "blocksize-error-policy=error", NULL }; progname = argv[0]; requires (NBDKIT " --version --filter=blocksize-policy null"); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Check that oversized requests are rejected */ if (nbd_pread (nbd, buf, MAXSIZE, 0, 0) != -1) { fprintf (stderr, "%s: test failed: " "nbd_pread did not fail with oversize request\n", argv[0]); exit (EXIT_FAILURE); } check (ERANGE, "nbd_pread: "); if (nbd_aio_pwrite (nbd, buf, MAXSIZE, 0, NBD_NULL_COMPLETION, 0) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_pwrite did not fail with oversize request\n", argv[0]); exit (EXIT_FAILURE); } check (ERANGE, "nbd_aio_pwrite: "); if (nbd_aio_pwrite (nbd, buf, 33*1024*1024, 0, NBD_NULL_COMPLETION, 0) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_pwrite did not fail with oversize request\n", argv[0]); exit (EXIT_FAILURE); } check (ERANGE, "nbd_aio_pwrite: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-client-unadvertised-cmd.c0000644000175000017500000000551614616437241016061 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include #include "requires.h" static char *progname; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "eval", "get_size=echo 512", "can_write=exit 0", NULL }; uint32_t strict; progname = argv[0]; requires (NBDKIT " --version eval"); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Use unadvertised command, client-side */ strict = nbd_get_strict_mode (nbd) | LIBNBD_STRICT_COMMANDS; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_trim (nbd, 512, 0, NBD_NULL_COMPLETION, 0) != -1) { fprintf (stderr, "%s: test failed: " "unpermitted nbd_aio_trim did not fail\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_trim: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-client-unaligned.c0000644000175000017500000000562014616437241014565 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include #include "requires.h" static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1024", "--filter=blocksize-policy", "blocksize-minimum=512", NULL }; uint32_t strict; progname = argv[0]; requires (NBDKIT " --version --filter=blocksize-policy null"); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Send an unaligned read, client-side */ strict = nbd_get_strict_mode (nbd) | LIBNBD_STRICT_ALIGN; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_pread (nbd, buf, 1, 1, NBD_NULL_COMPLETION, 0) != -1) { fprintf (stderr, "%s: test failed: " "unaligned nbd_aio_pread did not fail\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_pread: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-client-unknown-flags.c0000644000175000017500000000620414616437241015407 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; uint32_t strict; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Use in-range unknown command flags, client-side */ strict = nbd_get_strict_mode (nbd) | LIBNBD_STRICT_FLAGS; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_pread (nbd, buf, 512, 0, NBD_NULL_COMPLETION, LIBNBD_CMD_FLAG_MASK + 1) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_pread did not fail with bogus flags\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_pread: "); /* Use out-of-range unknown command flags, client-side */ if (nbd_aio_pread (nbd, buf, 512, 0, NBD_NULL_COMPLETION, 0x10000) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_pread did not fail with bogus flags\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_pread: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-client-zerosize.c0000644000175000017500000000537414616437241014477 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; uint32_t strict; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Send a zero-sized read, client-side */ strict = nbd_get_strict_mode (nbd) | LIBNBD_STRICT_ZERO_SIZE; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_pread (nbd, buf, 0, 0, NBD_NULL_COMPLETION, 0) != -1) { fprintf (stderr, "%s: test failed: " "zero-size nbd_aio_pread did not fail\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_pread: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-connect-null.c0000644000175000017500000000516314525371754013753 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include /* GCC will warn that we are passing NULL (or worse), so to do this * test we must remove the header file attribute. */ #define LIBNBD_ATTRIBUTE_NONNULL(...) #include static char *progname; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NULL }; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to an invalid command. */ if (nbd_connect_command (nbd, NULL) != -1) { fprintf (stderr, "%s: test failed: " "nbd_connect_command did not reject NULL argv\n", argv[0]); exit (EXIT_FAILURE); } check (EFAULT, "nbd_connect_command: "); if (nbd_connect_command (nbd, (char **)cmd) != -1) { fprintf (stderr, "%s: test failed: " "nbd_connect_command did not reject empty argv\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_connect_command: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-connect-twice.c0000644000175000017500000000471714553313333014106 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include static char *progname; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to a working server, then try to connect again. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_command (nbd, (char **)cmd) != -1) { fprintf (stderr, "%s: test failed: " "nbd_connect_command did not reject repeat attempt\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_connect_command: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-enum.c0000644000175000017500000000334114525371754012312 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include static char *progname; int main (int argc, char *argv[]) { struct nbd_handle *nbd; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Attempt to set an enum to garbage. */ if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE + 1) != -1) { fprintf (stderr, "%s: test failed: " "nbd_set_tls did not reject invalid enum\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_get_tls (nbd) != LIBNBD_TLS_DISABLE) { fprintf (stderr, "%s: test failed: " "nbd_get_tls not left at default value\n", argv[0]); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-multiple-disconnects.c0000644000175000017500000001453714553313355015516 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #define MAXSIZE (65 * 1024 * 1024) /* Oversize on purpose */ static char *progname; static char buf[MAXSIZE]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } static char script[] = "/tmp/libnbd-errors-scriptXXXXXX"; static char witness[] = "/tmp/libnbd-errors-witnessXXXXXX"; static int script_fd = -1, witness_fd = -1; static void cleanup (void) { if (script_fd != -1) { if (script_fd >= 0) close (script_fd); unlink (script); } if (witness_fd >= 0) { close (witness_fd); unlink (witness); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; /* We will connect to a custom nbdkit sh plugin which always fails * on reads (with a precise spelling required for older nbdkit), and * which delays responding to writes until a witness file no longer * exists. */ const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "sh", script, NULL }; progname = argv[0]; if (atexit (cleanup) != 0) { perror ("atexit"); exit (EXIT_FAILURE); } if ((script_fd = mkstemp (script)) == -1) { perror ("mkstemp"); exit (EXIT_FAILURE); } if ((witness_fd = mkstemp (witness)) == -1) { perror ("mkstemp"); exit (EXIT_FAILURE); } if (dprintf (script_fd, "case $1 in\n" " get_size) echo 128m || exit 1 ;;\n" " thread_model) echo serialize_all_requests; exit 0 ;;\n" " # XXX require 512-alignment, with new enough nbdkit\n" " pread) printf 'ENOMEM ' >&2; exit 1 ;;\n" " can_write) exit 0 ;;\n" " pwrite)\n" " while test -e %s; do sleep 1; done\n" " exit 0;;\n" " *) exit 2 ;;\n" "esac\n", witness) < 0) { perror ("dprintf"); exit (EXIT_FAILURE); } if (fchmod (script_fd, 0700) == -1) { perror ("fchmod"); exit (EXIT_FAILURE); } if (close (script_fd) == -1) { /* Unlinked later during atexit */ perror ("close"); exit (EXIT_FAILURE); } script_fd = -2; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Send a read that the nbdkit sh plugin will fail. */ if (nbd_pread (nbd, buf, 512, 0, 0) != -1) { fprintf (stderr, "%s: test failed: " "nbd_pread did not report server failure\n", argv[0]); exit (EXIT_FAILURE); } check (ENOMEM, "nbd_pread: "); /* Queue up two write commands so large that we block on POLLIN (the * first might not block when under load, such as valgrind, but the * second definitely will, since the nbdkit sh plugin reads only one * command at a time and stalls on the first), then queue multiple * disconnects. */ if (nbd_aio_pwrite (nbd, buf, 2 * 1024 * 1024, 0, NBD_NULL_COMPLETION, 0) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_pwrite (nbd, buf, 2 * 1024 * 1024, 0, NBD_NULL_COMPLETION, 0) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if ((nbd_aio_get_direction (nbd) & LIBNBD_AIO_DIRECTION_WRITE) == 0) { fprintf (stderr, "%s: test failed: " "expect to be blocked on write\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_aio_disconnect (nbd, 0) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_disconnect (nbd, 0) != -1) { fprintf (stderr, "%s: test failed: " "no diagnosis that nbd_aio_disconnect prevents new commands\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_disconnect: "); /* Unblock the nbdkit sh plugin */ if (close (witness_fd) == -1) { perror ("close"); exit (EXIT_FAILURE); } witness_fd = -1; if (unlink (witness) == -1) { perror ("unlink"); exit (EXIT_FAILURE); } /* Flush the queue (whether this one fails is a race with how fast * the server shuts down, so don't enforce status), then try to send * another command while CLOSED/DEAD */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s: ignoring %s\n", argv[0], nbd_get_error ()); } else fprintf (stderr, "%s: shutdown completed successfully\n", argv[0]); if (nbd_pread (nbd, buf, 512, 0, 0) != -1) { fprintf (stderr, "%s: test failed: " "nbd_pread did not fail on non-connected handle\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_pread: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-name-too-long.c0000644000175000017500000000440214525371754014021 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include static char *progname; static char buf[16384]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Request a name that is too long. */ memset (buf, 'a', 4999); buf[4999] = '\0'; if (nbd_set_export_name (nbd, buf) != -1) { fprintf (stderr, "%s: test failed: " "nbd_set_export_name did not reject large name\n", argv[0]); exit (EXIT_FAILURE); } check (ENAMETOOLONG, "nbd_set_export_name: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-not-connected.c0000644000175000017500000000521414525371754014107 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include static char *progname; static char buf[16384]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Issue a connected command when not connected. pread_initialize defaults * to set. */ if (nbd_get_pread_initialize (nbd) != 1) { fprintf (stderr, "%s: test failed: " "nbd_get_pread_initialize gave unexpected result\n", argv[0]); exit (EXIT_FAILURE); } buf[0] = '1'; if (nbd_pread (nbd, buf, 512, 0, 0) != -1) { fprintf (stderr, "%s: test failed: " "nbd_pread did not fail on non-connected handle\n", argv[0]); exit (EXIT_FAILURE); } check (ENOTCONN, "nbd_pread: "); if (buf[0] != '\0') { fprintf (stderr, "%s: test failed: " "nbd_pread did not sanitize buffer on error\n", argv[0]); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-not-negotiating.c0000644000175000017500000000472414553313404014447 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include static char *progname; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* nbd_opt_abort can only be called during negotiation. */ if (nbd_opt_abort (nbd) != -1) { fprintf (stderr, "%s: test failed: " "nbd_opt_abort did not reject attempt in wrong state\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_opt_abort: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-not-negotiating-aio.c0000644000175000017500000001121514616437241015214 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include static char *progname; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } struct progress { int id; bool call_freed; bool comp_freed; }; static int list_call (void *user_data, const char *name, const char *description) { struct progress *p = user_data; fprintf (stderr, "%s: list callback should not be reached, iter %d\n", progname, p->id); exit (EXIT_FAILURE); } static void list_free (void *user_data) { struct progress *p = user_data; if (p->comp_freed) { fprintf (stderr, "%s: list free called too late, iter %d\n", progname, p->id); exit (EXIT_FAILURE); } p->call_freed = true; } static int comp_call (void *user_data, int *error) { struct progress *p = user_data; fprintf (stderr, "%s: list callback should not be reached, iter %d\n", progname, p->id); exit (EXIT_FAILURE); } static void comp_free (void *user_data) { struct progress *p = user_data; if (!p->call_freed) { fprintf (stderr, "%s: completion free called too early, iter %d\n", progname, p->id); exit (EXIT_FAILURE); } p->comp_freed = true; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; struct progress p; nbd_list_callback list_cb = { .callback = list_call, .user_data = &p, .free = list_free }; nbd_completion_callback comp_cb = { .callback = comp_call, .user_data = &p, .free = comp_free }; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Too early to try nbd_aio_opt_*. */ p = (struct progress) { .id = 0 }; if (nbd_aio_opt_list (nbd, list_cb, comp_cb) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_opt_list did not reject attempt in wrong state\n", argv[0]); exit (EXIT_FAILURE); } check (ENOTCONN, "nbd_aio_opt_list: "); if (!p.call_freed || !p.comp_freed) { fprintf (stderr, "%s: test failed: " "nbd_aio_opt_list did not call .free callbacks\n", argv[0]); exit (EXIT_FAILURE); } /* Connect to the server without requesting negotiation mode. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Too late to try nbd_aio_opt_*. */ p = (struct progress) { .id = 1 }; if (nbd_aio_opt_list (nbd, list_cb, comp_cb) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_opt_list did not reject attempt in wrong state\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_opt_list: "); if (!p.call_freed || !p.comp_freed) { fprintf (stderr, "%s: test failed: " "nbd_aio_opt_list did not call .free callbacks\n", argv[0]); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-notify-not-blocked.c0000644000175000017500000000476014553313422015050 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include static char *progname; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Try to notify that writes are ready when we aren't blocked on POLLOUT */ if (nbd_aio_notify_write (nbd) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_notify_write in wrong state did not fail\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_notify_write: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-poll-no-fd.c0000644000175000017500000000451514525371754013321 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include static char *progname; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Poll while there is no fd. */ if (nbd_aio_get_fd (nbd) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_get_fd did not fail prior to connection\n", argv[0]); } check (EINVAL, "nbd_aio_get_fd: "); if (nbd_poll (nbd, 1000) != -1) { fprintf (stderr, "%s: test failed: " "nbd_poll did not fail prior to connection\n", argv[0]); } check (EINVAL, "nbd_poll: "); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-pread-structured.c0000644000175000017500000000717714616437241014651 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } static bool chunk_clean; /* whether check_chunk has been called */ static bool completion_clean; /* whether check_completion has been called */ static void check_chunk (void *data) { if (chunk_clean) { fprintf (stderr, "%s: test failed: " "chunk callback invoked multiple times\n", progname); exit (EXIT_FAILURE); } chunk_clean = true; } static void check_completion (void *data) { if (completion_clean) { fprintf (stderr, "%s: test failed: " "completion callback invoked multiple times\n", progname); exit (EXIT_FAILURE); } completion_clean = true; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* We guarantee callbacks will be freed even on all error paths. */ if (nbd_aio_pread_structured (nbd, buf, 512, -1, (nbd_chunk_callback) { .free = check_chunk, }, (nbd_completion_callback) { .free = check_completion, }, 0) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_pread_structured did not fail with bogus offset\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_pread_structured: "); if (!chunk_clean || !completion_clean) { fprintf (stderr, "%s: test failed: " "callbacks not freed on nbd_aio_pread_structured failure\n", argv[0]); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-server-invalid-offset.c0000644000175000017500000000660714616437241015567 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } static void check_server_fail (struct nbd_handle *h, int64_t cookie, const char *cmd, int experr) { int r; if (cookie == -1) { fprintf (stderr, "%s: test failed: %s not sent to server\n", progname, cmd); exit (EXIT_FAILURE); } while ((r = nbd_aio_command_completed (h, cookie)) == 0) { if (nbd_poll (h, -1) == -1) { fprintf (stderr, "%s: test failed: poll failed while awaiting %s: %s\n", progname, cmd, nbd_get_error ()); exit (EXIT_FAILURE); } } if (r != -1) { fprintf (stderr, "%s: test failed: %s did not fail at server\n", progname, cmd); exit (EXIT_FAILURE); } check (experr, "nbd_aio_command_completed: "); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; uint32_t strict; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Read from an invalid offset, server-side */ strict = nbd_get_strict_mode (nbd) & ~LIBNBD_STRICT_BOUNDS; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } check_server_fail (nbd, nbd_aio_pread (nbd, buf, 512, -1, NBD_NULL_COMPLETION, 0), "nbd_aio_pread with bogus offset", EINVAL); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-server-oversize.c0000644000175000017500000001113714616437241014515 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include #include #include "requires.h" #define MAXSIZE 68157440 /* 65M, oversize on purpose */ static char *progname; static char buf[MAXSIZE]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } static void check_server_fail (struct nbd_handle *h, int64_t cookie, const char *cmd, int experr) { int r; if (cookie == -1) { fprintf (stderr, "%s: test failed: %s not sent to server\n", progname, cmd); exit (EXIT_FAILURE); } while ((r = nbd_aio_command_completed (h, cookie)) == 0) { if (nbd_poll (h, -1) == -1) { fprintf (stderr, "%s: test failed: poll failed while awaiting %s: %s\n", progname, cmd, nbd_get_error ()); exit (EXIT_FAILURE); } } if (r != -1) { fprintf (stderr, "%s: test failed: %s did not fail at server\n", progname, cmd); exit (EXIT_FAILURE); } check (experr, "nbd_aio_command_completed: "); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "eval", "get_size= echo 68157440", "block_size= echo 1 512 16M", "pread= echo EIO >&2; exit 1", "pwrite= if test $3 -gt $((32*1024*1024)); then\n" " exit 6\n" /* Hard disconnect */ " elif test $3 -gt $((16*1024*1024)); then\n" " echo EOVERFLOW >&2; exit 1\n" " fi\n" " cat >/dev/null", NULL, }; uint32_t strict; progname = argv[0]; requires ("max=$(" NBDKIT " --dump-plugin eval | " "sed -n '/^max_known_status=/ s///p') && test \"$max\" -ge 6"); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Check the advertised max sizes. */ printf ("server block size maximum: %" PRId64 "\n", nbd_get_block_size (nbd, LIBNBD_SIZE_MAXIMUM)); printf ("libnbd payload size maximum: %" PRId64 "\n", nbd_get_block_size (nbd, LIBNBD_SIZE_PAYLOAD)); /* Disable client-side safety check */ strict = nbd_get_strict_mode (nbd) & ~LIBNBD_STRICT_PAYLOAD; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Handle graceful server rejection of oversize request */ check_server_fail (nbd, nbd_aio_pwrite (nbd, buf, 17*1024*1024, 0, NBD_NULL_COMPLETION, 0), "17M nbd_aio_pwrite", EINVAL); /* Handle abrupt server rejection of oversize request */ check_server_fail (nbd, nbd_aio_pwrite (nbd, buf, 33*1024*1024, 0, NBD_NULL_COMPLETION, 0), "33M nbd_aio_pwrite", ENOTCONN); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-server-unadvertised-cmd.c0000644000175000017500000000667114616437241016114 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include #include "requires.h" static char *progname; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } static void check_server_fail (struct nbd_handle *h, int64_t cookie, const char *cmd, int experr) { int r; if (cookie == -1) { fprintf (stderr, "%s: test failed: %s not sent to server\n", progname, cmd); exit (EXIT_FAILURE); } while ((r = nbd_aio_command_completed (h, cookie)) == 0) { if (nbd_poll (h, -1) == -1) { fprintf (stderr, "%s: test failed: poll failed while awaiting %s: %s\n", progname, cmd, nbd_get_error ()); exit (EXIT_FAILURE); } } if (r != -1) { fprintf (stderr, "%s: test failed: %s did not fail at server\n", progname, cmd); exit (EXIT_FAILURE); } check (experr, "nbd_aio_command_completed: "); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "eval", "get_size=echo 512", "can_write=exit 0", NULL }; uint32_t strict; progname = argv[0]; requires (NBDKIT " --version eval"); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Use unadvertised command, server-side */ strict = nbd_get_strict_mode (nbd) & ~LIBNBD_STRICT_COMMANDS; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } check_server_fail (nbd, nbd_aio_trim (nbd, 512, 0, NBD_NULL_COMPLETION, 0), "unadvertised nbd_aio_trim", EINVAL); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-server-unaligned.c0000644000175000017500000001015114616437241014610 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include #include "requires.h" static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } static void check_server_fail (struct nbd_handle *h, int64_t cookie, const char *cmd, int experr) { int r; if (cookie == -1) { fprintf (stderr, "%s: test failed: %s not sent to server\n", progname, cmd); exit (EXIT_FAILURE); } while ((r = nbd_aio_command_completed (h, cookie)) == 0) { if (nbd_poll (h, -1) == -1) { fprintf (stderr, "%s: test failed: poll failed while awaiting %s: %s\n", progname, cmd, nbd_get_error ()); exit (EXIT_FAILURE); } } if (r != -1) { fprintf (stderr, "%s: test failed: %s did not fail at server\n", progname, cmd); exit (EXIT_FAILURE); } check (experr, "nbd_aio_command_completed: "); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1024", "--filter=blocksize-policy", "blocksize-minimum=512", "blocksize-error-policy=error", NULL }; uint32_t strict; progname = argv[0]; requires (NBDKIT " --version --filter=blocksize-policy null"); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* For debugging purposes, print the block size constraints exported * by nbdkit. */ printf ("server block size minimum: %" PRId64 "\n", nbd_get_block_size (nbd, LIBNBD_SIZE_MINIMUM)); printf ("server block size preferred: %" PRId64 "\n", nbd_get_block_size (nbd, LIBNBD_SIZE_PREFERRED)); printf ("server block size maximum: %" PRId64 "\n", nbd_get_block_size (nbd, LIBNBD_SIZE_MAXIMUM)); printf ("libnbd payload size maximum: %" PRId64 "\n", nbd_get_block_size (nbd, LIBNBD_SIZE_PAYLOAD)); fflush (stdout); /* Send an unaligned read, server-side */ strict = nbd_get_strict_mode (nbd) & ~LIBNBD_STRICT_ALIGN; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } check_server_fail (nbd, nbd_aio_pread (nbd, buf, 1, 1, NBD_NULL_COMPLETION, 0), "unaligned nbd_aio_pread", EINVAL); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-server-unknown-flags.c0000644000175000017500000000666514616437241015452 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } static void check_server_fail (struct nbd_handle *h, int64_t cookie, const char *cmd, int experr) { int r; if (cookie == -1) { fprintf (stderr, "%s: test failed: %s not sent to server\n", progname, cmd); exit (EXIT_FAILURE); } while ((r = nbd_aio_command_completed (h, cookie)) == 0) { if (nbd_poll (h, -1) == -1) { fprintf (stderr, "%s: test failed: poll failed while awaiting %s: %s\n", progname, cmd, nbd_get_error ()); exit (EXIT_FAILURE); } } if (r != -1) { fprintf (stderr, "%s: test failed: %s did not fail at server\n", progname, cmd); exit (EXIT_FAILURE); } check (experr, "nbd_aio_command_completed: "); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; uint32_t strict; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Use in-range unknown command flags, server-side */ strict = nbd_get_strict_mode (nbd) & ~LIBNBD_STRICT_FLAGS; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } check_server_fail (nbd, nbd_aio_pread (nbd, buf, 512, 0, NBD_NULL_COMPLETION, LIBNBD_CMD_FLAG_MASK + 1), "nbd_aio_pread with bogus flag", EINVAL); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/errors-server-zerosize.c0000644000175000017500000000657214616437241014530 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately provoke some errors and check the error messages from * nbd_get_error etc look reasonable. */ #include #include #include #include #include #include #include #include #include static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } static void check_server_fail (struct nbd_handle *h, int64_t cookie, const char *cmd, int experr) { int r; if (cookie == -1) { fprintf (stderr, "%s: test failed: %s not sent to server\n", progname, cmd); exit (EXIT_FAILURE); } while ((r = nbd_aio_command_completed (h, cookie)) == 0) { if (nbd_poll (h, -1) == -1) { fprintf (stderr, "%s: test failed: poll failed while awaiting %s: %s\n", progname, cmd, nbd_get_error ()); exit (EXIT_FAILURE); } } if (r != -1) { fprintf (stderr, "%s: test failed: %s did not fail at server\n", progname, cmd); exit (EXIT_FAILURE); } check (experr, "nbd_aio_command_completed: "); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; uint32_t strict; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Send a zero-sized read, server-side */ strict = nbd_get_strict_mode (nbd) & ~LIBNBD_STRICT_ZERO_SIZE; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } check_server_fail (nbd, nbd_aio_pread (nbd, buf, 0, 0, NBD_NULL_COMPLETION, 0), "zero-size nbd_aio_pread", EINVAL); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/export-name.c0000644000175000017500000000322714525371754012276 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test setting and reading the export name. */ #include #include #include #include #include #include static void check_export_name (struct nbd_handle *nbd, const char *str) { char *r; if (nbd_set_export_name (nbd, str) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_get_export_name (nbd); if (r == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (strcmp (str, r) == 0); free (r); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } check_export_name (nbd, "/"); check_export_name (nbd, "123"); check_export_name (nbd, ""); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/get-size.c0000644000175000017500000000452714553313562011564 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Simple test which connects to nbdkit and reads the size. * Essentially testing the newstyle handshake. */ #include #include #include #include #include #include #include #define SIZE 123456789 #define XSTR(s) #s #define STR(s) XSTR (s) int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t r; /* -n forces newstyle even if someone is still using nbdkit < 1.3 */ char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-n", "-v", "null", "size=" STR (SIZE), NULL }; const char *s; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Even ancient versions of nbdkit only supported newstyle-fixed. */ s = nbd_get_protocol (nbd); if (strcmp (s, "newstyle-fixed") != 0) { fprintf (stderr, "incorrect protocol \"%s\", expected \"newstyle-fixed\"\n", s); exit (EXIT_FAILURE); } if ((r = nbd_get_size (nbd)) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != SIZE) { fprintf (stderr, "%s: test failed: incorrect size, " "actual %" PRIi64 ", expected %d", argv[0], r, SIZE); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/get-version.c0000644000175000017500000000303614525371754012277 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Read the package and version from the handle. */ #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *s; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } s = nbd_get_package_name (nbd); if (s == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (strcmp (s, PACKAGE_NAME) == 0); s = nbd_get_version (nbd); if (s == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (strcmp (s, PACKAGE_VERSION) == 0); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/meta-base-allocation.c0000644000175000017500000002260214553313572014011 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test metadata context "base:allocation". */ #include #include #include #include #include #include #include #include #include #define BOGUS_CONTEXT "x-libnbd:nosuch" static int check_extent32 (void *data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error); static int check_extent64 (void *data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error); int main (int argc, char *argv[]) { struct nbd_handle *nbd; char plugin_path[256]; int id; nbd_extent_callback extent32_callback = { .callback = check_extent32, .user_data = &id }; nbd_extent64_callback extent64_callback = { .callback = check_extent64, .user_data = &id }; int r; const char *s; char *tmp; snprintf (plugin_path, sizeof plugin_path, "%s/meta-base-allocation.sh", getenv ("srcdir") ? : "."); char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "sh", plugin_path, NULL }; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* No contexts requested by default */ if ((r = nbd_get_nr_meta_contexts (nbd)) != 0) { fprintf (stderr, "unexpected number of contexts: %d\n", r); exit (EXIT_FAILURE); } /* Clearing an empty list is not fatal */ if (nbd_clear_meta_contexts (nbd) != 0) { fprintf (stderr, "unable to clear requested contexts\n"); exit (EXIT_FAILURE); } /* Negotiate metadata context "base:allocation" with the server. * This is supported in nbdkit >= 1.12. */ if (nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Also request negotiation of a bogus context, which should not * fail here nor affect block status later. */ if (nbd_add_meta_context (nbd, BOGUS_CONTEXT) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Test that we can read back what we have requested */ if ((r = nbd_get_nr_meta_contexts (nbd)) != 2) { fprintf (stderr, "unexpected number of contexts: %d\n", r); exit (EXIT_FAILURE); } tmp = nbd_get_meta_context (nbd, 1); if (tmp == NULL) { fprintf (stderr, "unable to read back requested context 1: %s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (strcmp (tmp, BOGUS_CONTEXT) != 0) { fprintf (stderr, "read back wrong context: %s\n", tmp); exit (EXIT_FAILURE); } free (tmp); if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Protocol should be "newstyle-fixed", with structured replies. */ s = nbd_get_protocol (nbd); if (strcmp (s, "newstyle-fixed") != 0) { fprintf (stderr, "incorrect protocol \"%s\", expected \"newstyle-fixed\"\n", s); exit (EXIT_FAILURE); } if ((r = nbd_get_structured_replies_negotiated (nbd)) != 1) { fprintf (stderr, "incorrect structured replies %d, expected 1\n", r); exit (EXIT_FAILURE); } switch (nbd_can_meta_context (nbd, BOGUS_CONTEXT)) { case -1: fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); case 0: break; default: fprintf (stderr, "unexpected status for nbd_can_meta_context\n"); exit (EXIT_FAILURE); } switch (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) { case -1: fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); case 1: break; default: fprintf (stderr, "unexpected status for nbd_can_meta_context\n"); exit (EXIT_FAILURE); } /* Read the block status. */ id = 1; if (nbd_block_status (nbd, 65536, 0, extent32_callback, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_block_status_64 (nbd, 65536, 0, extent64_callback, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } id = 2; if (nbd_block_status (nbd, 1024, 32768-512, extent32_callback, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_block_status_64 (nbd, 1024, 32768-512, extent64_callback, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } id = 3; if (nbd_block_status (nbd, 1024, 32768-512, extent32_callback, LIBNBD_CMD_FLAG_REQ_ONE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_block_status_64 (nbd, 1024, 32768-512, extent64_callback, LIBNBD_CMD_FLAG_REQ_ONE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } static int check_extent32 (void *data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error) { size_t i; int id; id = * (int *)data; printf ("extent: id=%d, metacontext=%s, offset=%" PRIu64 ", " "nr_entries=%zu, error=%d\n", id, metacontext, offset, nr_entries, *error); assert (*error == 0); if (strcmp (metacontext, LIBNBD_CONTEXT_BASE_ALLOCATION) == 0) { for (i = 0; i < nr_entries; i += 2) { printf ("\t%zu\tlength=%" PRIu32 ", status=%" PRIu32 "\n", i, entries[i], entries[i+1]); } fflush (stdout); switch (id) { case 1: assert (nr_entries == 10); assert (entries[0] == 8192); assert (entries[1] == 0); assert (entries[2] == 8192); assert (entries[3] == LIBNBD_STATE_HOLE); assert (entries[4] == 16384); assert (entries[5] == (LIBNBD_STATE_HOLE| LIBNBD_STATE_ZERO)); assert (entries[6] == 16384); assert (entries[7] == LIBNBD_STATE_ZERO); assert (entries[8] == 16384); assert (entries[9] == 0); break; case 2: assert (nr_entries == 4); assert (entries[0] == 512); assert (entries[1] == (LIBNBD_STATE_HOLE| LIBNBD_STATE_ZERO)); assert (entries[2] == 16384); assert (entries[3] == LIBNBD_STATE_ZERO); break; case 3: assert (nr_entries == 2); assert (entries[0] == 512); assert (entries[1] == (LIBNBD_STATE_HOLE| LIBNBD_STATE_ZERO)); break; default: abort (); } } else fprintf (stderr, "warning: ignored unexpected meta context %s\n", metacontext); return 0; } static int check_extent64 (void *data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { size_t i; int id; id = * (int *)data; printf ("extent: id=%d, metacontext=%s, offset=%" PRIu64 ", " "nr_entries=%zu, error=%d\n", id, metacontext, offset, nr_entries, *error); assert (*error == 0); if (strcmp (metacontext, LIBNBD_CONTEXT_BASE_ALLOCATION) == 0) { for (i = 0; i < nr_entries; i++) { printf ("\t%zu\tlength=%" PRIu64 ", status=%" PRIu64 "\n", i, entries[i].length, entries[i].flags); } fflush (stdout); switch (id) { case 1: assert (nr_entries == 5); assert (entries[0].length == 8192); assert (entries[0].flags == 0); assert (entries[1].length == 8192); assert (entries[1].flags == LIBNBD_STATE_HOLE); assert (entries[2].length == 16384); assert (entries[2].flags == (LIBNBD_STATE_HOLE|LIBNBD_STATE_ZERO)); assert (entries[3].length == 16384); assert (entries[3].flags == LIBNBD_STATE_ZERO); assert (entries[4].length == 16384); assert (entries[4].flags == 0); break; case 2: assert (nr_entries == 2); assert (entries[0].length == 512); assert (entries[0].flags == (LIBNBD_STATE_HOLE|LIBNBD_STATE_ZERO)); assert (entries[1].length == 16384); assert (entries[1].flags == LIBNBD_STATE_ZERO); break; case 3: assert (nr_entries == 1); assert (entries[0].length == 512); assert (entries[0].flags == (LIBNBD_STATE_HOLE|LIBNBD_STATE_ZERO)); break; default: abort (); } } else fprintf (stderr, "warning: ignored unexpected meta context %s\n", metacontext); return 0; } libnbd-1.20.3/tests/newstyle-limited.c0000644000175000017500000002544714616437241013341 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test interoperability with newstyle (not newstyle-fixed) servers. */ #include #include #include #include #include #include #include #include #include #include "requires.h" #define SIZE 65536 #define XSTR(s) #s #define STR(s) XSTR (s) static char wbuf[512] = { 1, 2, 3, 4 }, rbuf[512]; static const char *progname; static int pread_cb (void *data, const void *buf, size_t count, uint64_t offset, unsigned status, int *error) { int *calls; calls = data; ++*calls; if (buf != rbuf || count != sizeof rbuf) { fprintf (stderr, "%s: callback called with wrong buffer\n", progname); exit (EXIT_FAILURE); } if (offset != 2 * sizeof rbuf) { fprintf (stderr, "%s: callback called with wrong offset\n", progname); exit (EXIT_FAILURE); } if (*error != 0) { fprintf (stderr, "%s: callback called with unexpected error\n", progname); exit (EXIT_FAILURE); } if (status != LIBNBD_READ_DATA) { fprintf (stderr, "%s: callback called with wrong status\n", progname); exit (EXIT_FAILURE); } if (memcmp (rbuf, wbuf, sizeof rbuf) != 0) { fprintf (stderr, "%s: DATA INTEGRITY ERROR!\n", progname); exit (EXIT_FAILURE); } if (*calls > 1) { *error = ECONNREFUSED; /* Something NBD servers can't send */ return -1; } return 0; } static int list_cb (void *opaque, const char *name, const char *description) { /* This callback is unreachable; plain newstyle can't do OPT_LIST */ fprintf (stderr, "%s: list callback mistakenly reached", progname); exit (EXIT_FAILURE); } static bool list_freed = false; static void free_list_cb (void *opaque) { if (list_freed) { fprintf (stderr, "%s: list callback mistakenly freed twice", progname); exit (EXIT_FAILURE); } list_freed = true; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t r; char *args[] = { NBDKIT, "-s", "--mask-handshake", "0", "--exit-with-parent", "-v", "eval", "list_exports=printf a\\nb\\n", "get_size=echo " STR (SIZE), "open=if [ \"$3\" != a ]; then exit 1; fi\n" " truncate --size=" STR (SIZE) " $tmpdir/a", "pread=dd bs=1 skip=$4 count=$3 if=$tmpdir/a || exit 1", "pwrite=dd bs=1 conv=notrunc seek=$4 of=$tmpdir/a || exit 1", "can_write=exit 0", NULL }; int calls = 0; nbd_chunk_callback chunk_callback = { .callback = pread_cb, .user_data = &calls }; const char *s; progname = argv[0]; /* Quick check that nbdkit is new enough */ requires (NBDKIT " eval --dump-plugin | grep -q has_list_exports=1"); /* Initial sanity check that we can't require TLS */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_set_export_name (nbd, "a"); if (nbd_supports_tls (nbd)) { if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_command (nbd, args) != -1) { fprintf (stderr, "%s\n", "expected failure"); exit (EXIT_FAILURE); } } nbd_close (nbd); /* Next try. Requesting opt_mode works, but opt_go is the only * option that can succeed (via NBD_OPT_EXPORT_NAME); opt_abort is * special-cased but moves to DEAD rather than CLOSED. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_negotiating (nbd)) { fprintf (stderr, "unexpected state after negotiating\n"); exit (EXIT_FAILURE); } if (nbd_opt_list (nbd, (nbd_list_callback) { .callback = list_cb, .free = free_list_cb }) != -1) { fprintf (stderr, "nbd_opt_list: expected failure\n"); exit (EXIT_FAILURE); } if (!list_freed) { fprintf (stderr, "nbd_opt_list: list closure memory leak\n"); exit (EXIT_FAILURE); } if (nbd_get_errno () != ENOTSUP) { fprintf (stderr, "%s: wrong errno value after failed opt_list\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_opt_info (nbd) != -1) { fprintf (stderr, "nbd_opt_info: expected failure\n"); exit (EXIT_FAILURE); } if (nbd_get_errno () != ENOTSUP) { fprintf (stderr, "%s: wrong errno value after failed opt_info\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_opt_abort (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!nbd_aio_is_dead (nbd)) { fprintf (stderr, "unexpected state after opt_abort\n"); exit (EXIT_FAILURE); } nbd_close (nbd); /* And another try: an incorrect export name kills the connection, * rather than allowing a second try. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, args) == -1 || nbd_set_export_name (nbd, "b") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_opt_go (nbd) != -1) { fprintf (stderr, "%s\n", "expected failure"); exit (EXIT_FAILURE); } if (!nbd_aio_is_dead (nbd)) { fprintf (stderr, "unexpected state after failed export\n"); exit (EXIT_FAILURE); } nbd_close (nbd); /* Now for a working connection. Protocol should be "newstyle", * with no structured replies and no meta contexts. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_export_name (nbd, "a") == -1 || nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_is_ready (nbd) != true) { fprintf (stderr, "unexpected state after connection\n"); exit (EXIT_FAILURE); } s = nbd_get_protocol (nbd); if (strcmp (s, "newstyle") != 0) { fprintf (stderr, "incorrect protocol \"%s\", expected \"newstyle\"\n", s); exit (EXIT_FAILURE); } if ((r = nbd_get_structured_replies_negotiated (nbd)) != 0) { fprintf (stderr, "incorrect structured replies %" PRId64 ", expected 0\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "incorrect meta context %" PRId64 ", expected 0\n", r); exit (EXIT_FAILURE); } if ((r = nbd_get_size (nbd)) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != SIZE) { fprintf (stderr, "%s: test failed: incorrect size, " "actual %" PRIi64 ", expected %d", argv[0], r, SIZE); exit (EXIT_FAILURE); } nbd_close (nbd); /* Repeat a working connection, but with explicit nbd_opt_go. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_export_name (nbd, "a") == -1 || nbd_set_opt_mode (nbd, true) == -1 || nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_is_negotiating (nbd) != true) { fprintf (stderr, "unexpected state after connection\n"); exit (EXIT_FAILURE); } if (nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_is_ready (nbd) != true) { fprintf (stderr, "unexpected state after opt_go\n"); exit (EXIT_FAILURE); } s = nbd_get_protocol (nbd); if (strcmp (s, "newstyle") != 0) { fprintf (stderr, "incorrect protocol \"%s\", expected \"newstyle\"\n", s); exit (EXIT_FAILURE); } if ((r = nbd_get_structured_replies_negotiated (nbd)) != 0) { fprintf (stderr, "incorrect structured replies %" PRId64 ", expected 0\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "incorrect meta context %" PRId64 ", expected 0\n", r); exit (EXIT_FAILURE); } if ((r = nbd_get_size (nbd)) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != SIZE) { fprintf (stderr, "%s: test failed: incorrect size, " "actual %" PRIi64 ", expected %d", argv[0], r, SIZE); exit (EXIT_FAILURE); } /* Plain I/O */ if (nbd_pwrite (nbd, wbuf, sizeof wbuf, 2 * sizeof wbuf, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_pread (nbd, rbuf, sizeof rbuf, 2 * sizeof rbuf, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (memcmp (rbuf, wbuf, sizeof rbuf) != 0) { fprintf (stderr, "%s: DATA INTEGRITY ERROR!\n", argv[0]); exit (EXIT_FAILURE); } /* Test again for callback operation. */ memset (rbuf, 0, sizeof rbuf); if (nbd_pread_structured (nbd, rbuf, sizeof rbuf, 2 * sizeof rbuf, chunk_callback, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (calls != 1) { fprintf (stderr, "%s: callback called wrong number of times\n", argv[0]); exit (EXIT_FAILURE); } if (memcmp (rbuf, wbuf, sizeof rbuf) != 0) { fprintf (stderr, "%s: DATA INTEGRITY ERROR!\n", argv[0]); exit (EXIT_FAILURE); } /* Also test that callback errors are reflected correctly. */ if (nbd_pread_structured (nbd, rbuf, sizeof rbuf, 2 * sizeof rbuf, chunk_callback, 0) != -1) { fprintf (stderr, "%s: expected failure from callback\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_get_errno () != ECONNREFUSED) { fprintf (stderr, "%s: wrong errno value after failed callback\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/oldstyle.c0000644000175000017500000001407414616437241011673 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test interoperability with oldstyle servers. */ #include #include #include #include #include #include #include #include #include #define SIZE 65536 #define XSTR(s) #s #define STR(s) XSTR (s) static char wbuf[512] = { 1, 2, 3, 4 }, rbuf[512]; static const char *progname; static int pread_cb (void *data, const void *buf, size_t count, uint64_t offset, unsigned status, int *error) { int *calls; calls = data; ++*calls; if (buf != rbuf || count != sizeof rbuf) { fprintf (stderr, "%s: callback called with wrong buffer\n", progname); exit (EXIT_FAILURE); } if (offset != 2 * sizeof rbuf) { fprintf (stderr, "%s: callback called with wrong offset\n", progname); exit (EXIT_FAILURE); } if (*error != 0) { fprintf (stderr, "%s: callback called with unexpected error\n", progname); exit (EXIT_FAILURE); } if (status != LIBNBD_READ_DATA) { fprintf (stderr, "%s: callback called with wrong status\n", progname); exit (EXIT_FAILURE); } if (memcmp (rbuf, wbuf, sizeof rbuf) != 0) { fprintf (stderr, "%s: DATA INTEGRITY ERROR!\n", progname); exit (EXIT_FAILURE); } if (*calls > 1) { *error = ECONNREFUSED; /* Something NBD servers can't send */ return -1; } return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t r; char *args[] = { NBDKIT, "-s", "-o", "--exit-with-parent", "-v", "memory", "size=" STR (SIZE), NULL }; int calls = 0; nbd_chunk_callback chunk_callback = { .callback = pread_cb, .user_data = &calls }; const char *s; progname = argv[0]; /* Initial sanity check that we can't require TLS */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_supports_tls (nbd)) { if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_command (nbd, args) != -1) { fprintf (stderr, "%s\n", "expected failure"); exit (EXIT_FAILURE); } } nbd_close (nbd); /* Now for a working connection. Requesting an export name and opt_mode * have no effects. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1 || nbd_set_export_name (nbd, "ignored") == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Protocol should be "oldstyle", with no structured replies or meta * contexts. */ if (nbd_aio_is_ready (nbd) != true) { fprintf (stderr, "unexpected state after connection\n"); exit (EXIT_FAILURE); } s = nbd_get_protocol (nbd); if (strcmp (s, "oldstyle") != 0) { fprintf (stderr, "incorrect protocol \"%s\", expected \"oldstyle\"\n", s); exit (EXIT_FAILURE); } if ((r = nbd_get_structured_replies_negotiated (nbd)) != 0) { fprintf (stderr, "incorrect structured replies %" PRId64 ", expected 0\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "incorrect meta context %" PRId64 ", expected 0\n", r); exit (EXIT_FAILURE); } if ((r = nbd_get_size (nbd)) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != SIZE) { fprintf (stderr, "%s: test failed: incorrect size, " "actual %" PRIi64 ", expected %d", argv[0], r, SIZE); exit (EXIT_FAILURE); } /* Plain I/O */ if (nbd_pwrite (nbd, wbuf, sizeof wbuf, 2 * sizeof wbuf, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_pread (nbd, rbuf, sizeof rbuf, 2 * sizeof rbuf, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (memcmp (rbuf, wbuf, sizeof rbuf) != 0) { fprintf (stderr, "%s: DATA INTEGRITY ERROR!\n", argv[0]); exit (EXIT_FAILURE); } /* Test again for callback operation. */ memset (rbuf, 0, sizeof rbuf); if (nbd_pread_structured (nbd, rbuf, sizeof rbuf, 2 * sizeof rbuf, chunk_callback, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (calls != 1) { fprintf (stderr, "%s: callback called wrong number of times\n", argv[0]); exit (EXIT_FAILURE); } if (memcmp (rbuf, wbuf, sizeof rbuf) != 0) { fprintf (stderr, "%s: DATA INTEGRITY ERROR!\n", argv[0]); exit (EXIT_FAILURE); } /* Also test that callback errors are reflected correctly. */ if (nbd_pread_structured (nbd, rbuf, sizeof rbuf, 2 * sizeof rbuf, chunk_callback, 0) != -1) { fprintf (stderr, "%s: expected failure from callback\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_get_errno () != ECONNREFUSED) { fprintf (stderr, "%s: wrong errno value after failed callback\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/opt-abort.c0000644000175000017500000000547214616437241011745 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test behavior of nbd_opt_abort. */ #include #include #include #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t r; const char *s; char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "null", NULL }; /* Get into negotiating state. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Protocol should be "newstyle-fixed", with structured replies already * negotiated. */ if (nbd_aio_is_negotiating (nbd) != true) { fprintf (stderr, "unexpected state after connection\n"); exit (EXIT_FAILURE); } s = nbd_get_protocol (nbd); if (strcmp (s, "newstyle-fixed") != 0) { fprintf (stderr, "incorrect protocol \"%s\", expected \"newstyle-fixed\"\n", s); exit (EXIT_FAILURE); } if ((r = nbd_get_structured_replies_negotiated (nbd)) != 1) { fprintf (stderr, "incorrect structured replies %" PRId64 ", expected 1\n", r); exit (EXIT_FAILURE); } /* Quitting negotiation should be graceful. */ if (nbd_opt_abort (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_is_closed (nbd) != true) { fprintf (stderr, "unexpected state after abort\n"); exit (EXIT_FAILURE); } /* As negotiation never finished, we have no size. */ if ((r = nbd_get_size (nbd)) != -1) { fprintf (stderr, "%s: test failed: incorrect size, " "actual %" PRIi64 ", expected -1", argv[0], r); exit (EXIT_FAILURE); } if ((r = nbd_get_errno ()) != EINVAL) { fprintf (stderr, "%s: test failed: unexpected errno, " "actual %" PRIi64 ", expected %d EINVAL", argv[0], r, EINVAL); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/opt-info.c0000644000175000017500000002100514616437241011557 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test behavior of nbd_opt_info. */ /* See also unit test 230 in the various language ports. */ #include #include #include #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t r; char *s; char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "sh", SCRIPT, NULL }; /* Get into negotiating state. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, args) == -1 || nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* No size, flags, or meta-contexts yet */ if (nbd_get_size (nbd) != -1) { fprintf (stderr, "expecting error for get_size\n"); exit (EXIT_FAILURE); } if (nbd_is_read_only (nbd) != -1) { fprintf (stderr, "expecting error for is_read_only\n"); exit (EXIT_FAILURE); } if (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) != -1) { fprintf (stderr, "expecting error for can_meta_context\n"); exit (EXIT_FAILURE); } /* info with no prior name gets info on "" */ if (nbd_opt_info (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_get_size (nbd)) != 0) { fprintf (stderr, "expecting size of 0, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } if ((r = nbd_is_read_only (nbd)) != 1) { fprintf (stderr, "expecting read-only export, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 1) { fprintf (stderr, "expecting can_meta_context true, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } /* changing export wipes out prior info */ if (nbd_set_export_name (nbd, "b") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_get_size (nbd) != -1) { fprintf (stderr, "expecting error for get_size\n"); exit (EXIT_FAILURE); } if (nbd_is_read_only (nbd) != -1) { fprintf (stderr, "expecting error for is_read_only\n"); exit (EXIT_FAILURE); } if (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) != -1) { fprintf (stderr, "expecting error for can_meta_context\n"); exit (EXIT_FAILURE); } /* info on something not present fails */ if (nbd_set_export_name (nbd, "a") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_opt_info (nbd) != -1) { fprintf (stderr, "expecting error for opt_info\n"); exit (EXIT_FAILURE); } /* info for a different export, with automatic meta_context disabled */ if (nbd_set_export_name (nbd, "b") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_request_meta_context (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_opt_info (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* idempotent name change is no-op */ if (nbd_set_export_name (nbd, "b") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_get_size (nbd)) != 1) { fprintf (stderr, "expecting size of 1, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } if ((r = nbd_is_read_only (nbd)) != 0) { fprintf (stderr, "expecting read-write export, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } if (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) != -1) { fprintf (stderr, "expecting error for can_meta_context\n"); exit (EXIT_FAILURE); } if (nbd_set_request_meta_context (nbd, 1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* go on something not present */ if (nbd_set_export_name (nbd, "a") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_opt_go (nbd) != -1) { fprintf (stderr, "expecting error for opt_go\n"); exit (EXIT_FAILURE); } if (nbd_get_size (nbd) != -1) { fprintf (stderr, "expecting error for get_size\n"); exit (EXIT_FAILURE); } if (nbd_is_read_only (nbd) != -1) { fprintf (stderr, "expecting error for is_read_only\n"); exit (EXIT_FAILURE); } if (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) != -1) { fprintf (stderr, "expecting error for can_meta_context\n"); exit (EXIT_FAILURE); } /* go on a valid export */ if (nbd_set_export_name (nbd, "good") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_get_size (nbd)) != 4) { fprintf (stderr, "expecting size of 4, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } if ((r = nbd_is_read_only (nbd)) != 1) { fprintf (stderr, "expecting read-only export, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 1) { fprintf (stderr, "expecting can_meta_context true, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } /* now info is no longer valid, but does not wipe data */ if (nbd_set_export_name (nbd, "a") != -1) { fprintf (stderr, "expecting error for set_export_name\n"); exit (EXIT_FAILURE); } if ((s = nbd_get_export_name (nbd)) == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (strcmp (s, "good") != 0) { fprintf (stderr, "expecting export name 'good', got '%s'\n", s); exit (EXIT_FAILURE); } free (s); if (nbd_opt_info (nbd) != -1) { fprintf (stderr, "expecting error for opt_info\n"); exit (EXIT_FAILURE); } if ((r = nbd_get_size (nbd)) != 4) { fprintf (stderr, "expecting size of 4, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 1) { fprintf (stderr, "expecting can_meta_context true, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } nbd_shutdown (nbd, 0); nbd_close (nbd); /* Another connection. This time, check that SET_META triggered by opt_info * persists through nbd_opt_go with set_request_meta_context disabled. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, args) == -1 || nbd_add_meta_context (nbd, "x-unexpected:bogus") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) != -1) { fprintf (stderr, "expecting error for can_meta_context\n"); exit (EXIT_FAILURE); } if (nbd_opt_info (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "expecting can_meta_context false, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } if (nbd_set_request_meta_context (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Adding to the request list now won't matter */ if (nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) != 0) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "expecting can_meta_context false, got %" PRId64 "\n", r); exit (EXIT_FAILURE); } nbd_shutdown (nbd, 0); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/opt-list.c0000644000175000017500000001427414616437241011611 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test behavior of nbd_opt_list. */ #include #include #include #include #include #include #include #include #include #include "requires.h" struct progress { int id; int visit; bool freed; }; static int check (void *user_data, const char *name, const char *description) { struct progress *p = user_data; if (p->freed) { fprintf (stderr, "use after free callback"); exit (EXIT_FAILURE); } if (*description) { fprintf (stderr, "unexpected description for id %d visit %d: %s\n", p->id, p->visit, description); exit (EXIT_FAILURE); } switch (p->id) { case 0: fprintf (stderr, "callback shouldn't be reached when server has error\n"); exit (EXIT_FAILURE); case 1: switch (p->visit) { case 0: if (strcmp (name, "a") != 0) { fprintf (stderr, "unexpected name '%s', expecting 'a'\n", name); exit (EXIT_FAILURE); } break; case 1: if (strcmp (name, "b") != 0) { fprintf (stderr, "unexpected name '%s', expecting 'b'\n", name); exit (EXIT_FAILURE); } break; default: fprintf (stderr, "callback reached too many times\n"); exit (EXIT_FAILURE); } break; case 2: fprintf (stderr, "callback shouldn't be reached when list is empty\n"); exit (EXIT_FAILURE); case 3: if (p->visit != 0) { fprintf (stderr, "callback reached too many times\n"); exit (EXIT_FAILURE); } if (strcmp (name, "a") != 0) { fprintf (stderr, "unexpected name '%s', expecting 'a'\n", name); exit (EXIT_FAILURE); } break; default: fprintf (stderr, "callback reached with unexpected id %d\n", p->id); exit (EXIT_FAILURE); } p->visit++; return 0; } static void cb_free (void *user_data) { struct progress *p = user_data; if (p->freed) { fprintf (stderr, "too many free callbacks"); exit (EXIT_FAILURE); } p->freed = true; } static struct nbd_handle* prepare (int i) { char mode[] = "mode=X"; char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "sh", SCRIPT, mode, NULL }; struct nbd_handle *nbd; /* Get into negotiating state. */ mode[5] = '0' + i; nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } return nbd; } static void cleanup (struct nbd_handle *nbd) { nbd_opt_abort (nbd); nbd_close (nbd); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t r; struct progress p; /* Quick check that nbdkit is new enough */ requires (NBDKIT " sh --dump-plugin | grep -q has_list_exports=1"); /* First pass: server fails NBD_OPT_LIST. */ nbd = prepare (0); p = (struct progress) { .id = 0 }; r = nbd_opt_list (nbd, (nbd_list_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r != -1) { fprintf (stderr, "expected error after opt_list\n"); exit (EXIT_FAILURE); } if (p.visit != 0) { fprintf (stderr, "callback called unexpectedly\n"); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } cleanup (nbd); /* Second pass: server advertises 'a' and 'b'. */ nbd = prepare (1); p = (struct progress) { .id = 1 }; r = nbd_opt_list (nbd, (nbd_list_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } else if (r != 2 || p.visit != r) { fprintf (stderr, "wrong number of exports, got %" PRId64 " expecting 2\n", r); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } cleanup (nbd); /* Third pass: server advertises empty list. */ nbd = prepare (2); p = (struct progress) { .id = 2 }; r = nbd_opt_list (nbd, (nbd_list_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } else if (r != 0 || p.visit != r) { fprintf (stderr, "wrong number of exports, got %" PRId64 " expecting 0\n", r); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } cleanup (nbd); /* Final pass: server advertises 'a'. */ nbd = prepare (3); p = (struct progress) { .id = 3 }; r = nbd_opt_list (nbd, (nbd_list_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } else if (r != 1 || p.visit != r) { fprintf (stderr, "wrong number of exports, got %" PRId64 " expecting 1\n", r); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } cleanup (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/opt-list-meta.c0000644000175000017500000002535514553313662012537 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test behavior of nbd_opt_list_meta_context. */ /* See also unit test 240 in the various language ports. */ #include #include #include #include #include #include #include #include #include struct progress { int count; bool seen; bool freed; }; static int check (void *user_data, const char *name) { struct progress *p = user_data; if (p->freed) { fprintf (stderr, "use after free callback"); exit (EXIT_FAILURE); } p->count++; if (strcmp (name, LIBNBD_CONTEXT_BASE_ALLOCATION) == 0) p->seen = true; return 0; } static void cb_free (void *user_data) { struct progress *p = user_data; if (p->freed) { fprintf (stderr, "too many free callbacks"); exit (EXIT_FAILURE); } p->freed = true; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int r; struct progress p; char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "memory", "size=1M", NULL }; int max; char *tmp; uint64_t bytes; /* Get into negotiating state. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* First pass: empty query should give at least "base:allocation". */ p = (struct progress) { .count = 0 }; r = nbd_opt_list_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != p.count) { fprintf (stderr, "inconsistent return value %d, expected %d\n", r, p.count); exit (EXIT_FAILURE); } if (r < 1 || !p.seen) { fprintf (stderr, "server did not reply with base:allocation\n"); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } max = p.count; /* Second pass: bogus query has no response. */ p = (struct progress) { .count = 0 }; r = nbd_add_meta_context (nbd, "x-nosuch:"); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_opt_list_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 0 || p.count != 0 || p.seen) { fprintf (stderr, "expecting no contexts, got %d\n", r); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } /* Third pass: specific query should have one match. */ p = (struct progress) { .count = 0 }; r = nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_get_nr_meta_contexts (nbd) != 2) { fprintf (stderr, "expecting 2 meta requests\n"); exit (EXIT_FAILURE); } tmp = nbd_get_meta_context (nbd, 1); if (!tmp) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (strcmp (tmp, LIBNBD_CONTEXT_BASE_ALLOCATION) != 0) { fprintf (stderr, "expecting base:allocation, got %s\n", tmp); exit (EXIT_FAILURE); } free (tmp); r = nbd_opt_list_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1 || p.count != 1 || !p.seen) { fprintf (stderr, "expecting exactly one context, got %d\n", r); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } /* Fourth pass: nbd_opt_list_meta_context is stateless, so it should * not wipe status learned during nbd_opt_info(). */ r = nbd_get_size (nbd); if (r != -1) { fprintf (stderr, "expecting get_size to fail, got %d\n", r); exit (EXIT_FAILURE); } r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION); if (r != -1) { fprintf (stderr, "expecting can_meta_context to fail, got %d\n", r); exit (EXIT_FAILURE); } if (nbd_opt_info (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_get_size (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1024*1024) { fprintf (stderr, "expecting get_size of 1M, got %d\n", r); exit (EXIT_FAILURE); } r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "expecting can_meta_context to succeed, got %d\n", r); exit (EXIT_FAILURE); } if (nbd_clear_meta_contexts (nbd) == -1 || nbd_add_meta_context (nbd, "x-nosuch:") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } p = (struct progress) { .count = 0 }; r = nbd_opt_list_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 0 || p.count != 0 || p.seen) { fprintf (stderr, "expecting no contexts, got %d\n", r); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } r = nbd_get_size (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1048576) { fprintf (stderr, "expecting get_size of 1M, got %d\n", r); exit (EXIT_FAILURE); } r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "expecting can_meta_context to succeed, got %d\n", r); exit (EXIT_FAILURE); } /* Final pass: "base:" query should get at least "base:allocation" */ p = (struct progress) { .count = 0 }; r = nbd_add_meta_context (nbd, "base:"); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_opt_list_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r < 1 || r > max || r != p.count || !p.seen) { fprintf (stderr, "expecting at least one context, got %d\n", r); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } nbd_opt_abort (nbd); nbd_close (nbd); /* Repeat but this time without structured replies. Deal gracefully * with older servers that don't allow the attempt. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_set_request_structured_replies (nbd, false) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } bytes = nbd_stats_bytes_sent (nbd); p = (struct progress) { .count = 0 }; r = nbd_opt_list_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { if (nbd_stats_bytes_sent (nbd) == bytes) { fprintf (stderr, "bug: client failed to send request\n"); exit (EXIT_FAILURE); } fprintf (stdout, "ignoring failure from old server: %s\n", nbd_get_error ()); } else { if (r != p.count) { fprintf (stderr, "inconsistent return value %d, expected %d\n", r, p.count); exit (EXIT_FAILURE); } if (r < 1 || !p.seen) { fprintf (stderr, "server did not reply with base:allocation\n"); exit (EXIT_FAILURE); } } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } /* Now enable structured replies, and a retry should pass. */ r = nbd_opt_structured_reply (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "expecting structured replies to be supported\n"); exit (EXIT_FAILURE); } p = (struct progress) { .count = 0 }; r = nbd_opt_list_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p, .free = cb_free}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != p.count) { fprintf (stderr, "inconsistent return value %d, expected %d\n", r, p.count); exit (EXIT_FAILURE); } if (r < 1 || !p.seen) { fprintf (stderr, "server did not reply with base:allocation\n"); exit (EXIT_FAILURE); } if (!p.freed) { fprintf (stderr, "callback not freed by libnbd\n"); exit (EXIT_FAILURE); } nbd_opt_abort (nbd); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/opt-list-meta-queries.c0000644000175000017500000001064214553313652014202 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test behavior of nbd_opt_list_meta_context_queries. */ /* See also unit test 245 in the various language ports. */ #include #include #include #include #include #include #include #include /* GCC will warn that we are passing NULL (or worse), so to do this * test we must remove the header file attribute. */ #define LIBNBD_ATTRIBUTE_NONNULL(...) #include struct progress { int count; bool seen; }; static int check (void *user_data, const char *name) { struct progress *p = user_data; p->count++; if (strcmp (name, LIBNBD_CONTEXT_BASE_ALLOCATION) == 0) p->seen = true; return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int r; struct progress p; char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "memory", "size=1M", NULL }; nbd_context_callback ctx = { .callback = check, .user_data = &p}; /* Get into negotiating state. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* C-only test: We document that a NULL list is undefined behavior, but * that we try to make it fail with EFAULT. By disabling attributes * above, we are able to check that the generated EFAULT code works. */ p = (struct progress) { .count = 0 }; r = nbd_opt_list_meta_context_queries (nbd, NULL, ctx); if (r != -1 || nbd_get_errno () != EFAULT) { fprintf (stderr, "expected EFAULT for NULL query list\n"); exit (EXIT_FAILURE); } if (p.count != 0 || p.seen) { fprintf (stderr, "unexpected use of callback on failure\n"); exit (EXIT_FAILURE); } /* First pass: empty query should give at least "base:allocation". * The explicit query overrides a non-empty nbd_add_meta_context. */ p = (struct progress) { .count = 0 }; if (nbd_add_meta_context (nbd, "x-nosuch:") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } { char *empty[] = { NULL }; r = nbd_opt_list_meta_context_queries (nbd, empty, ctx); } if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != p.count) { fprintf (stderr, "inconsistent return value %d, expected %d\n", r, p.count); exit (EXIT_FAILURE); } if (r < 1 || !p.seen) { fprintf (stderr, "server did not reply with base:allocation\n"); exit (EXIT_FAILURE); } /* Second pass: bogus query has no response. */ p = (struct progress) { .count = 0 }; r = nbd_clear_meta_contexts (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } { char *nosuch[] = { "x-nosuch:", NULL }; r = nbd_opt_list_meta_context_queries (nbd, nosuch, ctx); } if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 0 || p.count != 0 || p.seen) { fprintf (stderr, "expecting no contexts, got %d\n", r); exit (EXIT_FAILURE); } /* Third pass: specific query should have one match. */ p = (struct progress) { .count = 0 }; { char *pair[] = { "x-nosuch:", LIBNBD_CONTEXT_BASE_ALLOCATION, NULL }; r = nbd_opt_list_meta_context_queries (nbd, pair, ctx); } if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1 || p.count != 1 || !p.seen) { fprintf (stderr, "expecting exactly one context, got %d\n", r); exit (EXIT_FAILURE); } nbd_opt_abort (nbd); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/opt-set-meta.c0000644000175000017500000002203514553313726012350 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test behavior of nbd_opt_set_meta_context. */ /* See also unit test 250 in the various language ports. */ #include #include #include #include #include #include #include #include #include #include "array-size.h" #include "requires.h" struct progress { int count; bool seen; }; static int check (void *user_data, const char *name) { struct progress *p = user_data; p->count++; if (strcmp (name, LIBNBD_CONTEXT_BASE_ALLOCATION) == 0) p->seen = true; return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int r; struct progress p; /* Leave room for --no-sr in second process */ char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "memory", "size=1M", NULL, NULL }; /* First process, delay structured replies. Get into negotiating state. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_set_request_structured_replies (nbd, false) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* No contexts negotiated yet; can_meta should be error if any requested */ if ((r = nbd_get_structured_replies_negotiated (nbd)) != 0) { fprintf (stderr, "structured replies got %d, expected 0\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "can_meta_context got %d, expected 0\n", r); exit (EXIT_FAILURE); } if (nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != -1) { fprintf (stderr, "can_meta_context got %d, expected -1\n", r); exit (EXIT_FAILURE); } /* SET cannot succeed until SR is negotiated. */ p = (struct progress) { .count = 0 }; r = nbd_opt_set_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p}); if (r != -1 || p.count || p.seen) { fprintf (stderr, "expecting failure of set without SR\n"); exit (EXIT_FAILURE); } r = nbd_opt_structured_reply (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "expecting server support for SR\n"); exit (EXIT_FAILURE); } if ((r = nbd_get_structured_replies_negotiated (nbd)) != 1) { fprintf (stderr, "structured replies got %d, expected 1\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != -1) { fprintf (stderr, "can_meta_context got %d, expected -1\n", r); exit (EXIT_FAILURE); } /* nbdkit does not match wildcard for SET, even though it does for LIST */ if (nbd_clear_meta_contexts (nbd) == -1 || nbd_add_meta_context (nbd, "base:") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } p = (struct progress) { .count = 0 }; r = nbd_opt_set_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != p.count || r != 0 || p.seen) { fprintf (stderr, "inconsistent return value %d, expected %d\n", r, p.count); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "can_meta_context got %d, expected 0\n", r); exit (EXIT_FAILURE); } /* Negotiating with no contexts is not an error, but selects nothing */ r = nbd_clear_meta_contexts (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } p = (struct progress) { .count = 0 }; r = nbd_opt_set_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 0 || p.count || p.seen) { fprintf (stderr, "expecting set_meta to select nothing\n"); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "can_meta_context got %d, expected 0\n", r); exit (EXIT_FAILURE); } /* Request 2 with expectation of 1; with set_request_meta_context off */ if (nbd_add_meta_context (nbd, "x-nosuch:context") == -1 || nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1 || nbd_set_request_meta_context (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } p = (struct progress) { .count = 0 }; r = nbd_opt_set_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p}); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1 || p.count != 1 || !p.seen) { fprintf (stderr, "expecting one context, got %d\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 1) { fprintf (stderr, "can_meta_context got %d, expected 1\n", r); exit (EXIT_FAILURE); } /* Transition to transmission phase; our last set should remain active */ if (nbd_clear_meta_contexts (nbd) == -1 || nbd_add_meta_context (nbd, "x-nosuch:context") == -1 || nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 1) { fprintf (stderr, "can_meta_context got %d, expected 1\n", r); exit (EXIT_FAILURE); } /* Now too late to set; but should not lose earlier state */ p = (struct progress) { .count = 0 }; r = nbd_opt_set_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p}); if (r != -1 || p.count || p.seen) { fprintf (stderr, "expecting set_meta failure\n"); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 1) { fprintf (stderr, "can_meta_context got %d, expected 1\n", r); exit (EXIT_FAILURE); } nbd_shutdown (nbd, 0); nbd_close (nbd); /* Second process, this time without structured replies server-side. * This part of the test is C-only, because it depends on nbdkit 1.14 * or newer with its --no-sr kill switch. */ requires (NBDKIT " --no-sr --help"); args[ARRAY_SIZE (args) - 2] = "--no-sr"; nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_get_structured_replies_negotiated (nbd)) != 0) { fprintf (stderr, "structured replies got %d, expected 0\n", r); exit (EXIT_FAILURE); } /* Expect server-side failure here */ p = (struct progress) { .count = 0 }; r = nbd_opt_set_meta_context (nbd, (nbd_context_callback) { .callback = check, .user_data = &p}); if (r != -1 || p.count || p.seen) { fprintf (stderr, "expecting set_meta failure\n"); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != -1) { fprintf (stderr, "can_meta_context got %d, expected -1\n", r); exit (EXIT_FAILURE); } /* Even though can_meta fails after failed SET, it returns 0 after go */ if (nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "can_meta_context got %d, expected 0\n", r); exit (EXIT_FAILURE); } nbd_shutdown (nbd, 0); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/opt-set-meta-queries.c0000644000175000017500000001223514553313712014017 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test behavior of nbd_opt_set_meta_context_queries. */ /* See also unit test 255 in the various language ports. */ #include #include #include #include #include #include #include #include /* GCC will warn that we are passing NULL (or worse), so to do this * test we must remove the header file attribute. */ #define LIBNBD_ATTRIBUTE_NONNULL(...) #include struct progress { int count; bool seen; }; static int check (void *user_data, const char *name) { struct progress *p = user_data; p->count++; if (strcmp (name, LIBNBD_CONTEXT_BASE_ALLOCATION) == 0) p->seen = true; return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int r; struct progress p; char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "memory", "size=1M", NULL }; nbd_context_callback ctx = { .callback = check, .user_data = &p}; /* Get into negotiating state. */ nbd = nbd_create (); if (nbd == NULL || nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* C-only test: We document that a NULL list is undefined behavior, but * that we try to make it fail with EFAULT. By disabling attributes * above, we are able to check that the generated EFAULT code works. */ p = (struct progress) { .count = 0 }; r = nbd_opt_set_meta_context_queries (nbd, NULL, ctx); if (r != -1 || nbd_get_errno () != EFAULT) { fprintf (stderr, "expected EFAULT for NULL query list\n"); exit (EXIT_FAILURE); } if (p.count != 0 || p.seen) { fprintf (stderr, "unexpected use of callback on failure\n"); exit (EXIT_FAILURE); } /* nbdkit does not match wildcard for SET, even though it does for LIST */ p = (struct progress) { .count = 0 }; { char *base[] = { "base:", NULL }; r = nbd_opt_set_meta_context_queries (nbd, base, ctx); } if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != p.count || r != 0 || p.seen) { fprintf (stderr, "inconsistent return value %d, expected %d\n", r, p.count); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "can_meta_context got %d, expected 0\n", r); exit (EXIT_FAILURE); } /* Negotiating with no contexts is not an error, but selects nothing. * An explicit empty list overrides a non-empty implicit list. */ if (nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } p = (struct progress) { .count = 0 }; { char *empty[] = { NULL }; r = nbd_opt_set_meta_context_queries (nbd, empty, ctx); } if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 0 || p.count || p.seen) { fprintf (stderr, "expecting set_meta to select nothing\n"); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 0) { fprintf (stderr, "can_meta_context got %d, expected 0\n", r); exit (EXIT_FAILURE); } /* Request 2 with expectation of 1. */ p = (struct progress) { .count = 0 }; { char *pair[] = { "x-nosuch:context", LIBNBD_CONTEXT_BASE_ALLOCATION, NULL }; r = nbd_opt_set_meta_context_queries (nbd, pair, ctx); } if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1 || p.count != 1 || !p.seen) { fprintf (stderr, "expecting one context, got %d\n", r); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 1) { fprintf (stderr, "can_meta_context got %d, expected 1\n", r); exit (EXIT_FAILURE); } /* Transition to transmission phase with with set_request_meta_context off, * our last set should remain active */ if (nbd_set_request_meta_context (nbd, 0) == -1 || nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) != 1) { fprintf (stderr, "can_meta_context got %d, expected 1\n", r); exit (EXIT_FAILURE); } nbd_shutdown (nbd, 0); nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/opt-starttls.c0000644000175000017500000002151614616437241012513 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test nbd_opt_starttls to nbdkit in various tls modes. */ #include #include #include #include #include #include #include #include #include #include #include "requires.h" struct expected { int first_opt_sr; int64_t first_size; int first_opt_meta; int first_can_meta; int first_opt_tls; int first_get_sr; int second_opt_sr; int second_can_meta; int second_opt_meta; int second_opt_tls; int get_tls; int second_get_sr; int third_can_meta; int64_t second_size; }; static int meta (void *user_data, const char *name) { return 0; } #define check(got, exp) do_check (#got, got, exp) static void do_check (const char *act, int64_t got, int64_t exp) { fprintf (stderr, "trying %s\n", act); if (got == -1) fprintf (stderr, "%s\n", nbd_get_error ()); else fprintf (stderr, "succeeded, result %" PRId64 "\n", got); if (exp == -2 ? got < 0 : got != exp) { fprintf (stderr, "got %" PRId64 ", but expected %" PRId64 "\n", got, exp); exit (EXIT_FAILURE); } } static void do_test (const char *server_tls, struct expected exp) { struct nbd_handle *nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_opt_mode (nbd, true) == -1 || nbd_set_request_structured_replies (nbd, false) == -1 || nbd_set_request_meta_context (nbd, false) == -1 || nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1 || nbd_set_tls_username (nbd, "alice") == -1 || nbd_set_tls_psk_file (nbd, "keys.psk") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Run nbdkit as a subprocess. */ const char *args[] = { NBDKIT, "-sv", "--exit-with-parent", server_tls, "--tls-verify-peer", "--tls-psk=keys.psk", "--filter=tls-fallback", "pattern", "size=1M", "tlsreadme=fallback", NULL }; if (nbd_connect_command (nbd, (char **)args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } check (nbd_opt_structured_reply (nbd), exp.first_opt_sr); check (nbd_opt_info (nbd), exp.first_size > 0 ? 0 : -1); check (nbd_get_size (nbd), exp.first_size); check (nbd_opt_set_meta_context (nbd, (nbd_context_callback) {.callback = meta}), exp.first_opt_meta); check (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION), exp.first_can_meta); check (nbd_opt_starttls (nbd), exp.first_opt_tls); check (nbd_get_structured_replies_negotiated (nbd), exp.first_get_sr); /* When SR is already active, nbdkit 1.30.10 returns true, while * 1.33.2 returns false because the second SR request is redundant. * check() special-cases the value of -2 to cope with this. */ check (nbd_opt_structured_reply (nbd), exp.second_opt_sr); check (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION), exp.second_can_meta); check (nbd_opt_set_meta_context (nbd, (nbd_context_callback) {.callback = meta}), exp.second_opt_meta); check (nbd_opt_starttls (nbd), exp.second_opt_tls); check (nbd_get_tls_negotiated (nbd), exp.get_tls); check (nbd_get_structured_replies_negotiated (nbd), exp.second_get_sr); check (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION), exp.third_can_meta); check (nbd_opt_info (nbd), 0); check (nbd_get_size (nbd), exp.second_size); check (nbd_opt_abort (nbd), 0); nbd_close (nbd); } int main (int argc, char *argv[]) { /* Check --tls-verify-peer option is supported. */ requires (NBDKIT " --tls-verify-peer -U - null --run 'exit 0'"); /* Check for nbdkit tls-fallback filter. */ requires (NBDKIT " --filter=tls-fallback null --dump-plugin"); /* Reject nbdkit 1.33.1 and older where --tls=require chokes on * early NBD_OPT_INFO. nbdkit does not have a nice witness for this, * so just try to provoke the bug manually (a working server will * gracefully fail both nbd_opt; a buggy one will lose sync and move * us to DEAD during our handling of the second one). */ { const char *args[] = { NBDKIT, "-sv", "--exit-with-parent", "--tls=require", "--tls-psk=keys.psk", "null", "size=1M", NULL }; struct nbd_handle *nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_supports_tls (nbd) != 1) { fprintf (stderr, "SKIP: missing TLS support in libnbd\n"); exit (77); } if (nbd_set_opt_mode (nbd, true) == -1 || nbd_connect_command (nbd, (char **)args) == -1 || nbd_opt_info (nbd) != -1 || nbd_opt_info (nbd) != -1 || nbd_aio_is_dead (nbd) == 1) { fprintf (stderr, "SKIP: nbdkit botches OPT_INFO before STARTTLS\n"); exit (77); } nbd_close (nbd); } /* Behavior of a server with no TLS support */ do_test ("--tls=no", (struct expected) { .first_opt_sr = 1, /* Structured reply succeeds */ .first_size = 512, /* Sees the tls-fallback safe size */ .first_opt_meta = 1, /* Requesting meta context works */ .first_can_meta = 1, /* Context is negotiated */ .first_opt_tls = 0, /* Server lacks TLS, but connection stays up */ .first_get_sr = 1, /* Structured reply still good */ .second_opt_sr = -2, /* Second SR is redundant, version-dependent */ .second_can_meta = 1, /* Context still negotiated */ .second_opt_meta = 1, /* Second meta request works */ .second_opt_tls = 0, /* Server still lacks TLS */ .get_tls = 0, /* Final state of TLS - not secure */ .second_get_sr = 1, /* Structured reply still good */ .third_can_meta = 1, /* Meta context still works */ .second_size = 512, /* Still the tls-fallback safe size */ }); /* Behavior of a server with opportunistic TLS support */ do_test ("--tls=on", (struct expected) { .first_opt_sr = 1, /* Structured reply succeeds */ .first_opt_meta = 1, /* Requesting meta context works */ .first_can_meta = 1, /* Context is negotiated */ .first_size = 512, /* Sees the tls-fallback safe size */ .first_opt_tls = 1, /* Server takes TLS */ .first_get_sr = 0, /* Structured reply wiped by TLS */ .second_opt_sr = 1, /* Server accepts second SR */ .second_can_meta = -1, /* Contexts not requested since TLS */ .second_opt_meta = 1, /* Requesting meta context works */ .second_opt_tls = 0, /* Server rejects second TLS as redundant */ .get_tls = 1, /* Final state of TLS - secure */ .second_get_sr = 1, /* Structured reply still good */ .third_can_meta = 1, /* Meta context still works */ .second_size = 1024*1024, /* Sees the actual size */ }); /* Behavior of a server that requires TLS support */ do_test ("--tls=require", (struct expected) { .first_opt_sr = 0, /* Structured reply fails without TLS first */ .first_opt_meta = -1, /* Meta context fails without TLS first */ .first_can_meta = -1, /* Context requires successful request */ .first_size = -1, /* Cannot request info */ .first_opt_tls = 1, /* Server takes TLS */ .first_get_sr = 0, /* Structured reply hasn't been requested */ .second_opt_sr = 1, /* Server accepts second SR */ .second_can_meta = -1, /* Contexts not requested since TLS */ .second_opt_meta = 1, /* Requesting meta context works */ .second_opt_tls = 0, /* Server rejects second TLS as redundant */ .get_tls = 1, /* Final state of TLS - secure */ .second_get_sr = 1, /* Structured reply still good */ .third_can_meta = 1, /* Meta context still works */ .second_size = 1024*1024, /* Sees the actual size */ }); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/opt-structured-twice.c0000644000175000017500000001052514616437241014146 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Demonstrate low-level use of nbd_opt_structured_reply(). */ #include #include #include #include #include #include #include #include #include #include static int check_extent (void *data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error) { /* If we got here, structured replies were negotiated. */ bool *seen = data; *seen = true; return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; int r; bool extents_worked = false; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server in opt mode, without structured replies. */ if (nbd_set_opt_mode (nbd, true) == -1 || nbd_set_request_structured_replies (nbd, false) == -1 || nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_get_structured_replies_negotiated (nbd); if (r == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 0) { fprintf (stderr, "%s: not expecting structured replies yet\n", argv[0]); exit (EXIT_FAILURE); } /* First request should succeed. */ r = nbd_opt_structured_reply (nbd); if (r == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "%s: expecting structured replies\n", argv[0]); exit (EXIT_FAILURE); } r = nbd_get_structured_replies_negotiated (nbd); if (r == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "%s: expecting structured replies\n", argv[0]); exit (EXIT_FAILURE); } /* nbdkit 1.32 allows a second request, nbdkit 1.34 diagnoses it. */ r = nbd_opt_structured_reply (nbd); if (r == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } printf ("%s: server's response to second request: %s\n", argv[0], r ? "accepted" : "rejected"); /* Regardless of whether second request passed, structured replies were * negotiated, so we should be able to do block status. */ r = nbd_get_structured_replies_negotiated (nbd); if (r == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "%s: expecting structured replies\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) == -1 || nbd_opt_go (nbd) == -1 || (r = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION)) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "%s: expecting base:allocation support\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_block_status (nbd, 65536, 0, (nbd_extent_callback) { .callback = check_extent, .user_data = &extents_worked }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (!extents_worked) { fprintf (stderr, "%s: expecting block_status success\n", argv[0]); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/pread-initialize.c0000644000175000017500000000617214616437241013266 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Check pread_initialize setting. */ #include #include #include #include #include #include #include #include #include #include static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; uint32_t strict; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Read from an invalid offset, client-side. When pread_initialize is off, * libnbd should not have touched our buffer. */ if (nbd_set_pread_initialize (nbd, false) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } buf[0] = '1'; strict = nbd_get_strict_mode (nbd) | LIBNBD_STRICT_BOUNDS; if (nbd_set_strict_mode (nbd, strict) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_pread (nbd, buf, 512, -1, NBD_NULL_COMPLETION, 0) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_pread did not fail with bogus offset\n", argv[0]); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_pread: "); if (buf[0] != '1') { fprintf (stderr, "%s: test failed: " "nbd_pread incorrectly sanitized buffer on client-side error\n", argv[0]); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/private-data.c0000644000175000017500000000423614525371754012421 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test the private data field. */ #include #include #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd1, *nbd2; nbd1 = nbd_create (); if (nbd1 == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd2 = nbd_create (); if (nbd2 == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Check the field initially reads as zero. */ assert (nbd_get_private_data (nbd1) == 0); assert (nbd_get_private_data (nbd2) == 0); /* Set and read back the field. */ assert (nbd_set_private_data (nbd1, 42) == 0); assert (nbd_get_private_data (nbd1) == 42); /* Setting the field in one handle shouldn't affect the other. */ assert (nbd_set_private_data (nbd2, 999) == 0); assert (nbd_get_private_data (nbd1) == 42); assert (nbd_get_private_data (nbd2) == 999); assert (nbd_set_private_data (nbd1, 43) == 42); assert (nbd_get_private_data (nbd2) == 999); assert (nbd_set_private_data (nbd2, 998) == 999); assert (nbd_get_private_data (nbd1) == 43); /* Check that (in C) we can store and retrieve a pointer. */ nbd_set_private_data (nbd1, (uintptr_t)&nbd_close); assert (nbd_get_private_data (nbd1) == (uintptr_t)&nbd_close); nbd_close (nbd2); nbd_close (nbd1); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/pwrite-extended.c0000644000175000017500000000643114616437241013142 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Check behavior of pwrite with PAYLOAD_LEN flag for extended headers. */ #include #include #include #include #include #include #include #include #include static char *progname; static char buf[512]; static void check (int experr, const char *prefix) { const char *msg = nbd_get_error (); int errnum = nbd_get_errno (); fprintf (stderr, "error: \"%s\"\n", msg); fprintf (stderr, "errno: %d (%s)\n", errnum, strerror (errnum)); if (strncmp (msg, prefix, strlen (prefix)) != 0) { fprintf (stderr, "%s: test failed: missing context prefix: %s\n", progname, msg); exit (EXIT_FAILURE); } if (errnum != experr) { fprintf (stderr, "%s: test failed: " "expected errno = %d (%s), but got %d\n", progname, experr, strerror (experr), errnum); exit (EXIT_FAILURE); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd[] = { NBDKIT, "-s", "-v", "--exit-with-parent", "memory", "1048576", NULL }; uint32_t strict; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } /* FIXME: future API addition to test if server negotiated extended mode. * Until then, strict flags must ignore the PAYLOAD_LEN flag for pwrite, * even though it is rejected for other commands. */ strict = nbd_get_strict_mode (nbd); if (!(strict & LIBNBD_STRICT_FLAGS)) { fprintf (stderr, "%s: test failed: " "nbd_get_strict_mode did not have expected flag set\n", progname); exit (EXIT_FAILURE); } if (nbd_aio_pread (nbd, buf, 512, 0, NBD_NULL_COMPLETION, LIBNBD_CMD_FLAG_PAYLOAD_LEN) != -1) { fprintf (stderr, "%s: test failed: " "nbd_aio_pread did not fail with unexpected flag\n", progname); exit (EXIT_FAILURE); } check (EINVAL, "nbd_aio_pread: "); if (nbd_aio_pwrite (nbd, buf, 512, 0, NBD_NULL_COMPLETION, LIBNBD_CMD_FLAG_PAYLOAD_LEN) == -1 || nbd_aio_pwrite (nbd, buf, 512, 0, NBD_NULL_COMPLETION, 0) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/read-only-flag.c0000644000175000017500000000337114553314031012622 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Simple end-to-end test of nbdkit -r / nbd_is_read_only. */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; int r; char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-r", "-v", "null", NULL }; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_is_read_only (nbd)) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "%s: test failed: unexpected read-only flag\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/read-write-flag.c0000644000175000017500000000335014553314041012771 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Simple end-to-end test of nbdkit without -r / nbd_is_read_only. */ #include #include #include #include int main (int argc, char *argv[]) { struct nbd_handle *nbd; int r; char *args[] = { NBDKIT, "-s", "--exit-with-parent", "-v", "null", NULL }; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_command (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if ((r = nbd_is_read_only (nbd)) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 0) { fprintf (stderr, "%s: test failed: unexpected read-only flag\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/server-death.c0000644000175000017500000001305114616437241012417 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately disconnect while stranding commands, to check their status. */ #include #include #include #include #include #include #include #include #include static bool trim_retired; static const char *progname; static int callback (void *ignored, int *error) { if (*error != ENOTCONN) { fprintf (stderr, "%s: unexpected error in trim callback: %s\n", progname, strerror (*error)); return 0; } trim_retired = 1; return 1; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int err; const char *msg; char buf[512]; int64_t cookie; int r; const char *cmd[] = { NBDKIT, "-s", "--exit-with-parent", "--filter=delay", "memory", "size=1m", "delay-read=15", "delay-trim=15", NULL }; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to a slow server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Issue a read and trim that should not complete yet. Set up the * trim to auto-retire via callback. */ if ((cookie = nbd_aio_pread (nbd, buf, sizeof buf, 0, NBD_NULL_COMPLETION, 0)) == -1) { fprintf (stderr, "%s: test failed: nbd_aio_pread: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_trim (nbd, sizeof buf, 0, (nbd_completion_callback) { .callback = callback }, 0) == -1) { fprintf (stderr, "%s: test failed: nbd_aio_trim: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_peek_command_completed (nbd) != 0) { fprintf (stderr, "%s: test failed: nbd_aio_peek_command_completed\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_aio_command_completed (nbd, cookie) != 0) { fprintf (stderr, "%s: test failed: nbd_aio_command_completed\n", argv[0]); exit (EXIT_FAILURE); } /* Kill the server forcefully (SIGINT is not always strong enough, * as nbdkit waits for pending transactions to finish before * actually exiting), although it's a race whether our signal * arrives while nbdkit has a pending transaction. */ if (nbd_kill_subprocess (nbd, SIGKILL) == -1) { fprintf (stderr, "%s: test failed: nbd_kill_subprocess: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* This part is somewhat racy depending on how fast we run before * the server process exits - depending on load and timing, nbd_poll * may succeed or fail, and we may transition to either CLOSED (the * state machine saw a clean EOF) or DEAD (the state machine saw a * stranded transaction or POLLERR). */ while ((r = nbd_poll (nbd, 1000)) == 1) if (nbd_aio_is_dead (nbd) || nbd_aio_is_closed (nbd)) break; if (!(nbd_aio_is_dead (nbd) || nbd_aio_is_closed (nbd))) { fprintf (stderr, "%s: test failed: server death not detected\n", argv[0]); exit (EXIT_FAILURE); } /* Detection of the dead server completes all remaining in-flight commands */ if (nbd_aio_in_flight (nbd) != 0) { fprintf (stderr, "%s: test failed: nbd_aio_in_flight\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_aio_peek_command_completed (nbd) != cookie) { fprintf (stderr, "%s: test failed: nbd_aio_peek_command_completed\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_aio_command_completed (nbd, cookie) != -1) { fprintf (stderr, "%s: test failed: nbd_aio_command_completed\n", argv[0]); exit (EXIT_FAILURE); } msg = nbd_get_error (); err = nbd_get_errno (); printf ("error: \"%s\"\n", msg); printf ("errno: %d (%s)\n", err, strerror (err)); if (err != ENOTCONN) { fprintf (stderr, "%s: test failed: unexpected errno %d (%s)\n", argv[0], err, strerror (err)); exit (EXIT_FAILURE); } /* With all commands retired, no further command should be pending */ if (!trim_retired) { fprintf (stderr, "%s: test failed: nbd_aio_trim_callback not retired\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_aio_peek_command_completed (nbd) != -1) { fprintf (stderr, "%s: test failed: nbd_aio_peek_command_completed\n", argv[0]); exit (EXIT_FAILURE); } msg = nbd_get_error (); err = nbd_get_errno (); printf ("error: \"%s\"\n", msg); printf ("errno: %d (%s)\n", err, strerror (err)); if (err != EINVAL) { fprintf (stderr, "%s: test failed: unexpected errno %d (%s)\n", argv[0], err, strerror (err)); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/shutdown-flags.c0000644000175000017500000001241714616437241013000 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Deliberately shutdown while stranding commands, to check their status. */ #include #include #include #include #include #include #include #include #include static bool write_retired; static const char *progname; static int callback (void *ignored, int *error) { if (*error != ENOTCONN) { fprintf (stderr, "%s: unexpected error in pwrite callback: %s\n", progname, strerror (*error)); return 0; } write_retired = 1; return 1; } static char buf[2 * 1024 * 1024]; int main (int argc, char *argv[]) { struct nbd_handle *nbd; int err; const char *msg; int64_t cookie; const char *cmd[] = { NBDKIT, "-s", "--exit-with-parent", "memory", "size=2m", NULL }; progname = argv[0]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to a server. */ if (nbd_connect_command (nbd, (char **)cmd) == -1) { fprintf (stderr, "%s: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Pause the server from reading, so that our first request will * exceed the buffer and force the second request to be stuck client * side (without stopping the server, we would be racing on whether * we hit a block on writes based on whether the server can read * faster than we can fill the pipe). */ if (nbd_kill_subprocess (nbd, SIGSTOP) == -1) { fprintf (stderr, "%s: test failed: nbd_kill_subprocess: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Issue back-to-back write requests, both large enough to block. Set up * the second to auto-retire via callback. */ if ((cookie = nbd_aio_pwrite (nbd, buf, sizeof buf, 0, NBD_NULL_COMPLETION, 0)) == -1) { fprintf (stderr, "%s: test failed: first nbd_aio_pwrite: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_pwrite (nbd, buf, sizeof buf, 0, (nbd_completion_callback) { .callback = callback }, 0) == -1) { fprintf (stderr, "%s: test failed: second nbd_aio_pwrite: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } /* Resume the server; but now our state machine remains blocked * until we notify or otherwise poll it. */ if (nbd_kill_subprocess (nbd, SIGCONT) == -1) { fprintf (stderr, "%s: test failed: nbd_kill_subprocess: %s\n", argv[0], nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_peek_command_completed (nbd) != 0) { fprintf (stderr, "%s: test failed: nbd_aio_peek_command_completed\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_aio_command_completed (nbd, cookie) != 0) { fprintf (stderr, "%s: test failed: nbd_aio_command_completed\n", argv[0]); exit (EXIT_FAILURE); } /* Send an immediate shutdown. This will abort the second write, as * well as kick the state machine to finish the first. */ if (nbd_shutdown (nbd, LIBNBD_SHUTDOWN_ABANDON_PENDING) == -1) { fprintf (stderr, "%s: test failed: nbd_shutdown\n", argv[0]); exit (EXIT_FAILURE); } /* All in-flight commands should now be completed. But whether the * first write succeeded or failed depends on the server, so we * merely retire it without checking status. */ if (nbd_aio_in_flight (nbd) != 0) { fprintf (stderr, "%s: test failed: nbd_aio_in_flight\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_aio_peek_command_completed (nbd) != cookie) { fprintf (stderr, "%s: test failed: nbd_aio_peek_command_completed\n", argv[0]); exit (EXIT_FAILURE); } nbd_aio_command_completed (nbd, cookie); /* With all commands retired, no further command should be pending */ if (!write_retired) { fprintf (stderr, "%s: test failed: second nbd_aio_pwrite not retired\n", argv[0]); exit (EXIT_FAILURE); } if (nbd_aio_peek_command_completed (nbd) != -1) { fprintf (stderr, "%s: test failed: nbd_aio_peek_command_completed\n", argv[0]); exit (EXIT_FAILURE); } msg = nbd_get_error (); err = nbd_get_errno (); printf ("error: \"%s\"\n", msg); printf ("errno: %d (%s)\n", err, strerror (err)); if (err != EINVAL) { fprintf (stderr, "%s: test failed: unexpected errno %d (%s)\n", argv[0], err, strerror (err)); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/shutdown-opt-mode.c0000644000175000017500000001135014616437241013423 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test shutdown in relation to opt mode. */ #include #include #include #include #include #include #include #include static const char *progname; int main (int argc, char *argv[]) { struct nbd_handle *nbd; const char *cmd_old[] = { NBDKIT, "--oldstyle", "-s", "--exit-with-parent", "memory", "size=2m", NULL }; const char *cmd_new[] = { NBDKIT, "-s", "--exit-with-parent", "memory", "size=2m", NULL }; progname = argv[0]; /* Part 1: Request opt mode. With oldstyle, it is not possible. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_opt_mode (nbd, true) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_command (nbd, (char **)cmd_old) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_is_ready (nbd) != 1) { fprintf (stderr, "%s: unexpected state\n", progname); exit (EXIT_FAILURE); } /* opt_abort fails, because we aren't in option negotiation. */ if (nbd_opt_abort (nbd) != -1) { fprintf (stderr, "%s: unexpected success of nbd_opt_abort\n", progname); exit (EXIT_FAILURE); } if (nbd_get_errno () != EINVAL) { fprintf (stderr, "%s: test failed: unexpected errno: %s\n", progname, strerror (nbd_get_errno ())); exit (EXIT_FAILURE); } /* Shutdown will succeed, since opt mode was not possible. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); /* Part 2: Request opt mode. With newstyle, it succeeds. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_opt_mode (nbd, true) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_command (nbd, (char **)cmd_new) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_is_negotiating (nbd) != 1) { fprintf (stderr, "%s: unexpected state\n", progname); exit (EXIT_FAILURE); } /* Disconnect fails, because we are in wrong mode. */ if (nbd_aio_disconnect (nbd, 0) != -1) { fprintf (stderr, "%s: test failed: nbd_aio_disconnect unexpectedly worked\n", progname); exit (EXIT_FAILURE); } if (nbd_get_errno () != EINVAL) { fprintf (stderr, "%s: test failed: unexpected errno: %s\n", progname, strerror (nbd_get_errno ())); exit (EXIT_FAILURE); } /* But we can manually call nbd_opt_abort, which closes gracefully. */ if (nbd_opt_abort (nbd) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_is_closed (nbd) != 1) { fprintf (stderr, "%s: unexpected state\n", progname); exit (EXIT_FAILURE); } nbd_close (nbd); /* Part 3: Shutdown works by default, regardless of opt mode */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_opt_mode (nbd, true) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_command (nbd, (char **)cmd_new) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_aio_is_negotiating (nbd) != 1) { fprintf (stderr, "%s: unexpected state\n", progname); exit (EXIT_FAILURE); } /* Shutdown succeeds; it does more than just aio_disconnect. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/socket-activation-name.c0000644000175000017500000000703214553314127014372 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test nbd_{set,get}_socket_activation_name API. */ #undef NDEBUG #include #include #include #include #include #include #include #include #include "requires.h" #define DEBUG_FILE "socket-activation-name.out" int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *r; /* Test that this version of nbdkit supports -D nbdkit.environ=1 * added in nbdkit 1.35.2. * * As a side-effect, also checks we have nbdkit, the null plugin and * a working grep command, all needed below. */ requires ("libnbd_sentinel=42 " NBDKIT " -v -D nbdkit.environ=1 null --run true 2>&1 | " "grep -sq 'debug.*libnbd_sentinel=42'"); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Check firstly that it defaults to empty string. */ r = nbd_get_socket_activation_name (nbd); assert (r != NULL); assert (strcmp (r, "") == 0); free (r); /* Run external nbdkit and check the LISTEN_FDNAMES environment * variable is set to "unknown". We need to capture the debug * output of nbdkit, hence the journey through the shell. */ unlink (DEBUG_FILE); char *cmd[] = { "sh", "-c", "exec 2> " DEBUG_FILE "\n" "exec " NBDKIT " --exit-with-parent -v -D nbdkit.environ=1 null 1024\n", NULL }; if (nbd_connect_systemd_socket_activation (nbd, cmd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Check the size is expected so we know we managed to connect to nbdkit. */ assert (nbd_get_size (nbd) == 1024); nbd_close (nbd); /* nbdkit doesn't know anything about socket activation names, but * the LISTEN_FDNAMES environment variable should appear in the * debug output. */ assert (system ("grep 'debug.*LISTEN_FDNAMES=unknown' " DEBUG_FILE) == 0); unlink (DEBUG_FILE); /* Test again with a specific name. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Check we can set it to something and read that back. */ assert (nbd_set_socket_activation_name (nbd, "hello") == 0); r = nbd_get_socket_activation_name (nbd); assert (r != NULL); assert (strcmp (r, "hello") == 0); free (r); /* Run external nbdkit again (same command as above). */ if (nbd_connect_systemd_socket_activation (nbd, cmd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (nbd_get_size (nbd) == 1024); nbd_close (nbd); /* Check LISTEN_FDNAMES was set to the known value. */ assert (system ("grep 'debug.*LISTEN_FDNAMES=hello' " DEBUG_FILE) == 0); unlink (DEBUG_FILE); exit (EXIT_SUCCESS); } libnbd-1.20.3/tests/synch-parallel.c0000644000175000017500000001564014525371754012757 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test synchronous parallel high level API requests on different * handles. There should be no shared state between the handles so * this should run at full speed (albeit with us only having a single * command per thread in flight). */ #include #include #include #include #include #include #include #include #include #include #include #include #include "byte-swapping.h" /* We keep a shadow of the RAM disk so we can check integrity of the data. */ static char *ramdisk; /* This is also defined in synch-parallel.sh and checked here. */ #define EXPORTSIZE (8*1024*1024) /* How long (seconds) that the test will run for. */ #define RUN_TIME 10 /* Number of threads. */ #define NR_THREADS 8 /* Unix socket. */ static const char *unixsocket; struct thread_status { size_t i; /* Thread index, 0 .. NR_THREADS-1 */ time_t end_time; /* Threads run until this end time. */ uint64_t offset, length; /* Area assigned to this thread. */ int status; /* Return status. */ unsigned requests; /* Total number of requests made. */ uint64_t bytes_sent, bytes_received; /* Bytes sent and received by thread. */ }; static void *start_thread (void *arg); int main (int argc, char *argv[]) { pthread_t threads[NR_THREADS]; struct thread_status status[NR_THREADS]; size_t i; time_t t; int err; unsigned requests, errors; uint64_t bytes_sent, bytes_received; if (argc != 2) { fprintf (stderr, "%s socket\n", argv[0]); exit (EXIT_FAILURE); } unixsocket = argv[1]; /* Get the current time and the end time. */ time (&t); t += RUN_TIME; srand (t + getpid ()); /* Initialize the RAM disk with the initial data from * nbdkit-pattern-filter. */ ramdisk = malloc (EXPORTSIZE); if (ramdisk == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } for (i = 0; i < EXPORTSIZE; i += 8) { uint64_t d = htobe64 (i); memcpy (&ramdisk[i], &d, sizeof d); } /* Start the worker threads. */ for (i = 0; i < NR_THREADS; ++i) { status[i].i = i; status[i].end_time = t; status[i].offset = i * EXPORTSIZE / NR_THREADS; status[i].length = EXPORTSIZE / NR_THREADS; status[i].status = 0; status[i].requests = 0; status[i].bytes_sent = status[i].bytes_received = 0; err = pthread_create (&threads[i], NULL, start_thread, &status[i]); if (err != 0) { errno = err; perror ("pthread_create"); exit (EXIT_FAILURE); } } /* Wait for the threads to exit. */ errors = 0; requests = 0; bytes_sent = bytes_received = 0; for (i = 0; i < NR_THREADS; ++i) { err = pthread_join (threads[i], NULL); if (err != 0) { errno = err; perror ("pthread_join"); exit (EXIT_FAILURE); } if (status[i].status != 0) { fprintf (stderr, "thread %zu failed with status %d\n", i, status[i].status); errors++; } requests += status[i].requests; bytes_sent += status[i].bytes_sent; bytes_received += status[i].bytes_received; } free (ramdisk); /* Print some stats. */ printf ("TLS: %s\n", #ifdef TLS "enabled" #else "disabled" #endif ); printf ("bytes sent: %" PRIu64 " (%g Mbytes/s)\n", bytes_sent, (double) bytes_sent / RUN_TIME / 1000000); printf ("bytes received: %" PRIu64 " (%g Mbytes/s)\n", bytes_received, (double) bytes_received / RUN_TIME / 1000000); printf ("I/O requests: %u (%g IOPS)\n", requests, (double) requests / RUN_TIME); exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE); } #define BUFFER_SIZE 16384 static void * start_thread (void *arg) { struct thread_status *status = arg; struct nbd_handle *nbd; char *buf; int cmd; uint64_t offset; time_t t; buf = calloc (BUFFER_SIZE, 1); if (buf == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #ifdef TLS /* Require TLS on the handle and fail if not available or if the * handshake fails. */ if (nbd_set_tls (nbd, LIBNBD_TLS_REQUIRE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_tls_username (nbd, "alice") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_tls_psk_file (nbd, "keys.psk") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Connect to nbdkit. */ if (nbd_connect_unix (nbd, unixsocket) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (nbd_get_size (nbd) == EXPORTSIZE); assert (nbd_can_multi_conn (nbd) > 0); assert (nbd_is_read_only (nbd) == 0); /* Issue commands. */ while (1) { /* Run until the timer expires. */ time (&t); if (t > status->end_time) break; /* Issue a synchronous read or write command. */ offset = status->offset + (rand () % (status->length - BUFFER_SIZE)); cmd = rand () & 1; if (cmd == 0) { if (nbd_pwrite (nbd, buf, BUFFER_SIZE, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } status->bytes_sent += BUFFER_SIZE; memcpy (&ramdisk[offset], buf, BUFFER_SIZE); } else { if (nbd_pread (nbd, buf, BUFFER_SIZE, offset, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } status->bytes_received += BUFFER_SIZE; if (memcmp (&ramdisk[offset], buf, BUFFER_SIZE) != 0) { fprintf (stderr, "thread %zu: DATA INTEGRITY ERROR!\n", status->i); goto error; } } status->requests++; } printf ("thread %zu: finished OK\n", status->i); if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto error; } nbd_close (nbd); free (buf); status->status = 0; pthread_exit (status); error: free (buf); fprintf (stderr, "thread %zu: failed\n", status->i); status->status = -1; pthread_exit (status); } libnbd-1.20.3/tests/aio-parallel.sh0000755000175000017500000000173014560173044012560 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test AIO parallel data integrity. source ./functions.sh set -e set -x $NBDKIT -U - \ --filter=cow \ pattern size=64M \ --run '$VG ./aio-parallel $unixsocket' libnbd-1.20.3/tests/aio-parallel-tls.sh0000755000175000017500000000211714560173104013355 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test AIO parallel data integrity. source ./functions.sh set -e set -x requires $NBDKIT --tls-verify-peer -U - null --run 'exit 0' $NBDKIT -U - --tls=require --tls-verify-peer --tls-psk=keys.psk \ --filter=cow \ pattern size=64M \ --run '$VG ./aio-parallel-tls $unixsocket' libnbd-1.20.3/tests/aio-parallel-load.sh0000755000175000017500000000165614560173055013506 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test AIO random load. source ./functions.sh set -e set -x $NBDKIT -U - memory size=64M \ --run './aio-parallel-load $unixsocket' libnbd-1.20.3/tests/aio-parallel-load-tls.sh0000755000175000017500000000206014560173064014274 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test AIO random load. source ./functions.sh set -e set -x requires $NBDKIT --tls-verify-peer -U - null --run 'exit 0' $NBDKIT -U - --tls=require --tls-verify-peer --tls-psk=keys.psk \ memory size=64M \ --run '$VG ./aio-parallel-load-tls $unixsocket' libnbd-1.20.3/tests/code-asserts.sh0000755000175000017500000000260114616437241012614 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Check that code which uses assert(3) includes source ./functions.sh set -e # Check we're running from the git checkout and have git grep. requires test -d "$abs_top_srcdir/.git" requires git --version requires git grep --help requires grep --version cd $abs_top_srcdir fail=0 for f in $( git ls-files '*.[ch]' | grep -v generator/states ); do wc="$( < $f grep -E '\bassert.?\(' | wc -l )" if [ "$wc" -ge 1 ]; then if ! grep -sqF "" $f; then echo "$f uses assert(3) but does not include " fail=1 fi fi done exit $fail libnbd-1.20.3/tests/code-bool.sh0000755000175000017500000000274614616437241012075 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Check that code which uses bool/true/false includes source ./functions.sh set -e # Check we're running from the git checkout and have git grep. requires test -d "$abs_top_srcdir/.git" requires git --version requires git grep --help requires grep --version cd $abs_top_srcdir fail=0 for f in $( git ls-files '*.[ch]' | grep -v generator/states ); do wc="$( < $f grep -E '\b(bool|true|false)\b' | grep -Fv '/*' | grep -Ev '^ \*' | grep -Ev '"' | wc -l )" if [ "$wc" -ge 1 ]; then if ! grep -sqF "" $f; then echo "$f uses bool/true/false but does not include " fail=1 fi fi done exit $fail libnbd-1.20.3/tests/code-errno.sh0000755000175000017500000000257114616437241012263 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Check that code which uses errno(3) includes source ./functions.sh set -e # Check we're running from the git checkout and have git grep. requires test -d "$abs_top_srcdir/.git" requires git --version requires git grep --help cd $abs_top_srcdir fail=0 for f in $( git ls-files '*.[ch]' | grep -v generator/states ); do wc="$( < $f grep -E '\berrno\b' | grep -Ev '/\*.*errno' | wc -l )" if [ "$wc" -ge 1 ]; then if ! grep -sqF "" $f; then echo "$f uses errno(3) but does not include " fail=1 fi fi done exit $fail libnbd-1.20.3/tests/code-inttypes.sh0000755000175000017500000000265214616437241013015 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Check that code which uses PRI* or SCN* macros includes source ./functions.sh set -e # Check we're running from the git checkout and have git grep. requires test -d "$abs_top_srcdir/.git" requires git --version requires git grep --help requires grep --version cd $abs_top_srcdir fail=0 for f in $( git ls-files '*.[ch]' | grep -v generator/states ); do wc="$( < $f grep -E '\b(PRI|SCN)[iu]' | wc -l )" if [ "$wc" -ge 1 ]; then if ! grep -sqF "" $f; then echo "$f uses PRI* or SCN* macros but does not include " fail=1 fi fi done exit $fail libnbd-1.20.3/tests/code-stdint.sh0000755000175000017500000000266014616437241012442 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Check that code which uses standard C int types includes source ./functions.sh set -e # Check we're running from the git checkout and have git grep. requires test -d "$abs_top_srcdir/.git" requires git --version requires git grep --help requires grep --version cd $abs_top_srcdir fail=0 for f in $( git ls-files '*.[ch]' | grep -v generator/states ); do wc="$( < $f grep -E '\b(u?int(8|16|32|64)_t)\b' | wc -l )" if [ "$wc" -ge 1 ]; then if ! grep -sqF "" $f; then echo "$f uses standard C int types but does not include " fail=1 fi fi done exit $fail libnbd-1.20.3/tests/connect-uri-nbd-vsock.sh0000755000175000017500000000407514560173132014333 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test nbd+vsock:// URIs source ./functions.sh set -e set -x # vsock loopback support was only added in Linux kernel 5.6 and # requires a particular kernel module to be loaded. requires_linux_kernel_version 5.6 requires_vsock_support # This test requires nbdkit >= 1.16 which added the --vsock option. requires $NBDKIT --version minor=$( $NBDKIT --dump-config | grep ^version_minor | cut -d= -f2 ) requires test $minor -ge 16 requires $NBDKIT pattern --version # Check we built nbdinfo (this implicitly checks we have libxml2). requires nbdinfo --version # Because vsock ports are 32 bits, we can basically pick one at random # and be sure that it's not used. However we must pick one >= 1024 # because the ports below this are privileged. #port=$(( 1024 + $RANDOM + ($RANDOM << 16) )) # # We would do that, but libxml2 is broken, see: # https://mail.gnome.org/archives/xml/2020-October/msg00001.html # https://mail.gnome.org/archives/xml/2020-October/msg00002.html port=$(( 1024 + $RANDOM + ($RANDOM << 11) )) # Form the NBD URI. Don't rely on nbdkit $uri support since it didn't # always support vsock, and anyway we want to test libnbd here. # 1 == VMADDR_CID_LOCAL export our_uri="nbd+vsock://1:$port" $NBDKIT --vsock --port $port \ pattern size=8M \ --run 'nbdinfo "$our_uri"' libnbd-1.20.3/tests/eflags-plugin.sh0000755000175000017500000000337114525371754012767 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # This nbdkit plugin is used to test flags support in the libnbd # library. See tests/eflags.c key=`cat $tmpdir/key` print=`cat $tmpdir/print` rc=`cat $tmpdir/rc` if [ "$1" = "$key" ]; then if [ -n "$print" ]; then echo "$print"; fi exit "$rc" fi case "$1" in thread_model) echo parallel ;; config) case "$2" in key|print|rc) echo "$3" > $tmpdir/$2 ;; *) echo "unknown config key: $2" >&2 exit 1 ;; esac ;; get_size) echo 1M ;; pread) dd if=/dev/zero count=$3 iflag=count_bytes ;; can_write) # We have to answer this with true, otherwise the plugin will # be read-only and methods like can_trim will never be called. exit 0 ;; can_zero) # We have to default to answering this with true before # can_fast_zero has an effect. exit 0 ;; *) exit 2 ;; esac libnbd-1.20.3/tests/make-pki.sh0000755000175000017500000000644014525371754011730 #!/usr/bin/env bash # libnbd # Copyright Red Hat # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # # * Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # * Neither the name of Red Hat nor the names of its contributors may be # used to endorse or promote products derived from this software without # specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. set -e # This creates the PKI files for the TLS tests. if [ -z "$SRCDIR" ] || [ ! -f "$SRCDIR/connect-tls.c" ]; then echo "$0: script is being run from the wrong directory." echo "Don't try to run this script by hand." exit 1 fi if [ -z "$CERTTOOL" ]; then echo "$0: \$CERTTOOL was not set." echo "Don't try to run this script by hand." exit 1 fi if [ -z "$1" ]; then echo "$0: Output directory not set." echo "Don't try to run this script by hand." exit 1 fi mkdir -p $1 # Create the CA. $CERTTOOL --generate-privkey > $1/ca-key.pem chmod 0600 $1/ca-key.pem cat > $1/ca.info < $1/server-key.pem chmod 0600 $1/server-key.pem cat > $1/server.info < $1/client-key.pem chmod 0600 $1/client-key.pem cat > $1/client.info <&2 exit 1 fi echo "$3" ;; get_size) printf %s "$2" | wc -c ;; can_write) if test "$2" != b; then exit 3; fi ;; pread) printf %s "$2" | dd bs=1 count=$3 skip=$4 ;; pwrite) dd of=/dev/null ;; *) exit 2 ;; esac libnbd-1.20.3/tests/opt-list.sh0000755000175000017500000000262314525371754012004 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # This is used to test nbd_opt_list in various language bindings. # See tests/opt-list.c and test 220 in language bindings. case "$1" in config) if [ "$2" != mode ]; then echo EINVAL >&2; exit 1; fi echo "$3" > "$tmpdir/mode" ;; list_exports) read i < "$tmpdir/mode" case $i in 0) echo EINVAL listing not supported >&2; exit 1 ;; 1) echo NAMES; echo a; echo b ;; 2) echo NAMES ;; *) echo NAMES; echo a ;; esac ;; get_size) echo 512 ;; pread) dd bs=1 if=/dev/zero count=$3 ;; *) exit 2 ;; esac libnbd-1.20.3/tests/synch-parallel.sh0000755000175000017500000000175514560173204013141 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test synchronous parallel high level API requests. source ./functions.sh set -e set -x $NBDKIT -U - \ --filter=cow \ pattern size=8M \ --run '$VG ./synch-parallel $unixsocket' libnbd-1.20.3/tests/synch-parallel-tls.sh0000755000175000017500000000213514560173222013732 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test synchronous parallel high level API requests. source ./functions.sh set -e set -x requires $NBDKIT --tls-verify-peer -U - null --run 'exit 0' $NBDKIT -U - --tls=require --tls-verify-peer --tls-psk=keys.psk \ --filter=cow \ pattern size=8M \ --run './synch-parallel-tls $unixsocket' libnbd-1.20.3/python/0000755000175000017500000000000014675532654010132 5libnbd-1.20.3/python/examples/0000755000175000017500000000000014675532654011750 5libnbd-1.20.3/python/examples/LICENSE-FOR-EXAMPLES0000644000175000017500000000343614525371754014537 The files in the python/examples/ directory are licensed under this very permissive BSD license. This means that you can copy, use, adapt and modify them without any significant restrictions. You can also combine them with proprietary code or include them in code that is distributed under other open source licenses. ---------------------------------------------------------------------- libnbd python examples Copyright Red Hat Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Red Hat nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. libnbd-1.20.3/python/examples/checksum.py0000755000175000017500000000314714525371754014050 #!/usr/bin/python3 # This example can be used to compute the checksum of each # block in a disk image. eg: # # $ ./checksum.py disk.qcow2 # block @ 0 (size 1073741824) sha1 587b1dec5c55d2a2845e18c08bd135135396eb52 # # The disk image can be in any format that is supported by qemu-nbd. # You can change the block size and checksum (hash) type using command # line parameters. import argparse import hashlib import nbd p = argparse.ArgumentParser( description="Compute checksums of blocks in a disk image") p.add_argument('filename', metavar='FILENAME', help='disk image') p.add_argument('--format', dest='format', help='disk image format, eg. qcow2 or raw') p.add_argument('--blocksize', dest='blocksize', type=int, default=1024*1024*1024, help='block size') p.add_argument('--hash', dest='hash', default='sha1', help='hash to use, eg. sha1, sha256, etc.') arg = p.parse_args() max_read = 32*1024*1024 h = nbd.NBD() # Set up the qemu-nbd command line. cmd = ["qemu-nbd", "--read-only", "--persistent", arg.filename] if arg.format is not None: cmd += ["-f", arg.format] h.connect_systemd_socket_activation(cmd) size = h.get_size() offset = 0 while offset < size: hh = hashlib.new(arg.hash) start = offset got = 0 while offset < size and got < arg.blocksize: c = min(max_read, arg.blocksize - got) c = min(c, size-offset) hh.update(h.pread(c, offset)) got += c offset += c print("block @ %d (size %d)" % (start, got), end=" ") print("%s %s" % (arg.hash, hh.hexdigest())) h.shutdown() libnbd-1.20.3/python/t/0000755000175000017500000000000014675532654010375 5libnbd-1.20.3/python/t/010-import.py0000644000175000017500000000141214525371754012471 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd assert id(nbd) libnbd-1.20.3/python/t/100-handle.py0000644000175000017500000000141114525371754012411 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd h = nbd.NBD() libnbd-1.20.3/python/t/105-with-handle.py0000644000175000017500000000150114525371754013367 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd with nbd.nbd() as h: assert h.get_handle_name().startswith("nbd") libnbd-1.20.3/python/t/110-defaults.py0000644000175000017500000000225514525371754012775 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd h = nbd.NBD() assert h.get_export_name() == "" assert h.get_full_info() is False assert h.get_tls() == nbd.TLS_DISABLE assert h.get_request_extended_headers() is True assert h.get_request_structured_replies() is True assert h.get_request_meta_context() is True assert h.get_request_block_size() is True assert h.get_pread_initialize() is True assert h.get_handshake_flags() == nbd.HANDSHAKE_FLAG_MASK assert h.get_opt_mode() is False libnbd-1.20.3/python/t/120-set-non-defaults.py0000644000175000017500000000336514525371754014362 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd h = nbd.NBD() h.set_export_name("name") assert h.get_export_name() == "name" h.set_full_info(True) assert h.get_full_info() is True try: h.set_tls(nbd.TLS_REQUIRE + 1) assert False except nbd.Error: pass assert h.get_tls() == nbd.TLS_DISABLE if h.supports_tls(): h.set_tls(nbd.TLS_ALLOW) assert h.get_tls() == nbd.TLS_ALLOW h.set_request_extended_headers(False) assert h.get_request_extended_headers() is False h.set_request_structured_replies(False) assert h.get_request_structured_replies() is False h.set_request_meta_context(False) assert h.get_request_meta_context() is False h.set_request_block_size(False) assert h.get_request_block_size() is False h.set_pread_initialize(False) assert h.get_pread_initialize() is False try: h.set_handshake_flags(nbd.HANDSHAKE_FLAG_MASK + 1) assert False except nbd.Error: assert h.get_handshake_flags() == nbd.HANDSHAKE_FLAG_MASK h.set_handshake_flags(0) assert h.get_handshake_flags() == 0 h.set_opt_mode(True) assert h.get_opt_mode() is True libnbd-1.20.3/python/t/140-explicit-close.py0000644000175000017500000000342114525371754014111 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import gc import re import nbd # Catch debug messages so we know when the handle was really closed. messages = [] def f(context, msg): global messages messages.append(msg) # Open the handle and then explicitly close it. h = nbd.NBD() h.set_debug(True) h.set_debug_callback(f) h.close() # Check the messages so we know the handle was closed. matches = [msg for msg in messages if re.match("closing", msg)] assert len(matches) == 1 # Check that an exception is raised if we use any method on h. try: h.set_export_name("test") assert False except nbd.ClosedHandle: # Expected. pass except Exception as exn: print("unexpected exception: %r" % exn) assert False try: h.close() assert False except nbd.ClosedHandle: # Expected. pass except Exception as exn: print("unexpected exception: %r" % exn) assert False gc.collect() # Check there are no more closing handle messages (which is probably # impossible). matches = [msg for msg in messages if re.match("closing", msg)] assert len(matches) == 1 libnbd-1.20.3/python/t/200-connect-command.py0000644000175000017500000000160114553477231014223 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") h = nbd.NBD() h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "null"]) libnbd-1.20.3/python/t/210-opt-abort.py0000644000175000017500000000220714553477241013072 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import errno import os nbdkit = os.getenv("NBDKIT", "nbdkit") h = nbd.NBD() h.set_opt_mode(True) h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "null"]) assert h.get_protocol() == "newstyle-fixed" assert h.get_structured_replies_negotiated() h.opt_abort() assert h.aio_is_closed() try: h.get_size() assert False except nbd.Error as ex: assert ex.errnum == errno.EINVAL libnbd-1.20.3/python/t/220-opt-list.py0000644000175000017500000000420614553476471012744 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os from contextlib import contextmanager nbdkit = os.getenv("NBDKIT", "nbdkit") # Require new-enough nbdkit if os.system(nbdkit + " sh --dump-plugin | grep -q has_list_exports=1"): print("skipping: " + nbdkit + " too old for this test") exit(0) script = "%s/../tests/opt-list.sh" % os.getenv("srcdir", ".") exports = [] @contextmanager def conn(mode): global exports exports = [] h = nbd.NBD() try: h.set_opt_mode(True) h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "sh", script, "mode=%d" % mode]) yield h finally: h.opt_abort() h = None def f(user_data, name, desc): global exports assert user_data == 42 assert desc == "" exports.append(name) # First pass: server fails NBD_OPT_LIST with conn(0) as h: try: h.opt_list(lambda *args: f(42, *args)) assert False except nbd.Error: pass assert exports == [] # Second pass: server advertises 'a' and 'b' with conn(1) as h: assert h.opt_list(lambda *args: f(42, *args)) == 2 assert exports == ["a", "b"] # Third pass: server advertises empty list with conn(2) as h: assert h.opt_list(lambda *args: f(42, *args)) == 0 assert exports == [] # Final pass: server advertises 'a' with conn(3) as h: assert h.opt_list(lambda *args: f(42, *args)) == 1 assert exports == ["a"] libnbd-1.20.3/python/t/230-opt-info.py0000644000175000017500000000642414553476513012726 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") script = "%s/../tests/opt-info.sh" % os.getenv("srcdir", ".") def must_fail(f, *args, **kwds): try: f(*args, **kwds) assert False except nbd.Error: pass h = nbd.NBD() h.set_opt_mode(True) h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "sh", script]) h.add_meta_context(nbd.CONTEXT_BASE_ALLOCATION) # No size, flags, or meta-contexts yet must_fail(h.get_size) must_fail(h.is_read_only) must_fail(h.can_meta_context, nbd.CONTEXT_BASE_ALLOCATION) # info with no prior name gets info on "" h.opt_info() assert h.get_size() == 0 assert h.is_read_only() is True assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True # changing export wipes out prior info h.set_export_name("b") must_fail(h.get_size) must_fail(h.is_read_only) must_fail(h.can_meta_context, nbd.CONTEXT_BASE_ALLOCATION) # info on something not present fails h.set_export_name("a") must_fail(h.opt_info) # info for a different export, with automatic meta_context disabled h.set_export_name("b") h.set_request_meta_context(False) h.opt_info() # idempotent name change is no-op h.set_export_name("b") assert h.get_size() == 1 assert h.is_read_only() is False must_fail(h.can_meta_context, nbd.CONTEXT_BASE_ALLOCATION) h.set_request_meta_context(True) # go on something not present h.set_export_name("a") must_fail(h.opt_go) must_fail(h.get_size) must_fail(h.is_read_only) must_fail(h.can_meta_context, nbd.CONTEXT_BASE_ALLOCATION) # go on a valid export h.set_export_name("good") h.opt_go() assert h.get_size() == 4 assert h.is_read_only() is True assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True # now info is no longer valid, but does not wipe data must_fail(h.set_export_name, "a") assert h.get_export_name() == "good" must_fail(h.opt_info) assert h.get_size() == 4 assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True h.shutdown() # Another connection. This time, check that SET_META triggered by opt_info # persists through nbd_opt_go with set_request_meta_context disabled. h = nbd.NBD() h.set_opt_mode(True) h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "sh", script]) h.add_meta_context("x-unexpected:bogus") must_fail(h.can_meta_context, nbd.CONTEXT_BASE_ALLOCATION) h.opt_info() assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is False h.set_request_meta_context(False) # Adding to the request list now won't matter h.add_meta_context(nbd.CONTEXT_BASE_ALLOCATION) h.opt_go() assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is False h.shutdown() libnbd-1.20.3/python/t/240-opt-list-meta.py0000644000175000017500000000724614553477250013675 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") count = 0 seen = False def f(user_data, name): global count global seen assert user_data == 42 count = count + 1 if name == nbd.CONTEXT_BASE_ALLOCATION: seen = True def must_fail(f, *args, **kwds): try: f(*args, **kwds) assert False except nbd.Error: pass # Get into negotiating state. h = nbd.NBD() h.set_opt_mode(True) h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "memory", "size=1M"]) # First pass: empty query should give at least "base:allocation". count = 0 seen = False r = h.opt_list_meta_context(lambda *args: f(42, *args)) assert r == count assert r >= 1 assert seen is True max = count # Second pass: bogus query has no response. count = 0 seen = False h.add_meta_context("x-nosuch:") r = h.opt_list_meta_context(lambda *args: f(42, *args)) assert r == 0 assert r == count assert seen is False # Third pass: specific query should have one match. count = 0 seen = False h.add_meta_context(nbd.CONTEXT_BASE_ALLOCATION) assert h.get_nr_meta_contexts() == 2 assert h.get_meta_context(1) == nbd.CONTEXT_BASE_ALLOCATION r = h.opt_list_meta_context(lambda *args: f(42, *args)) assert r == 1 assert count == 1 assert seen is True # Fourth pass: opt_list_meta_context is stateless, so it should # not wipe status learned during opt_info count = 0 seen = False must_fail(h.can_meta_context, nbd.CONTEXT_BASE_ALLOCATION) must_fail(h.get_size) h.opt_info() assert h.get_size() == 1024*1024 assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True h.clear_meta_contexts() h.add_meta_context("x-nosuch:") r = h.opt_list_meta_context(lambda *args: f(42, *args)) assert r == 0 assert count == 0 assert seen is False assert h.get_size() == 1048576 assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True # Final pass: "base:" query should get at least "base:allocation" count = 0 seen = False h.add_meta_context("base:") r = h.opt_list_meta_context(lambda *args: f(42, *args)) assert r >= 1 assert r <= max assert r == count assert seen is True h.opt_abort() # Repeat but this time without structured replies. Deal gracefully # with older servers that don't allow the attempt. h = nbd.NBD() h.set_opt_mode(True) h.set_request_structured_replies(False) h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "memory", "size=1M"]) bytes = h.stats_bytes_sent() try: count = 0 seen = False r = h.opt_list_meta_context(lambda *args: f(42, *args)) assert r == count assert r >= 1 assert seen is True except nbd.Error as ex: assert h.stats_bytes_sent() > bytes print("ignoring failure from old server: %s" % ex.string) # Now enable structured replies, and a retry should pass. r = h.opt_structured_reply() assert r is True count = 0 seen = False r = h.opt_list_meta_context(lambda *args: f(42, *args)) assert r == count assert r >= 1 assert seen is True h.opt_abort() libnbd-1.20.3/python/t/245-opt-list-meta-queries.py0000644000175000017500000000371314553477257015357 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") count = 0 seen = False def f(user_data, name): global count global seen assert user_data == 42 count = count + 1 if name == nbd.CONTEXT_BASE_ALLOCATION: seen = True # Get into negotiating state. h = nbd.NBD() h.set_opt_mode(True) h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "memory", "size=1M"]) # First pass: empty query should give at least "base:allocation". # The explicit query overrides a non-empty nbd_add_meta_context. count = 0 seen = False h.add_meta_context("x-nosuch:") r = h.opt_list_meta_context_queries([], lambda *args: f(42, *args)) assert r == count assert r >= 1 assert seen is True # Second pass: bogus query has no response. count = 0 seen = False h.clear_meta_contexts() r = h.opt_list_meta_context_queries(["x-nosuch:"], lambda *args: f(42, *args)) assert r == 0 assert r == count assert seen is False # Third pass: specific query should have one match. count = 0 seen = False r = h.opt_list_meta_context_queries(["x-nosuch:", nbd.CONTEXT_BASE_ALLOCATION], lambda *args: f(42, *args)) assert r == 1 assert count == 1 assert seen is True h.opt_abort() libnbd-1.20.3/python/t/250-opt-set-meta.py0000644000175000017500000000656714553477264013530 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") count = 0 seen = False def f(user_data, name): global count global seen assert user_data == 42 count = count + 1 if name == nbd.CONTEXT_BASE_ALLOCATION: seen = True def must_fail(f, *args, **kwds): try: f(*args, **kwds) assert False except nbd.Error: pass # Get into negotiating state without structured replies. h = nbd.NBD() h.set_opt_mode(True) h.set_request_structured_replies(False) h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "memory", "size=1M"]) # No contexts negotiated yet; can_meta should be error if any requested assert h.get_structured_replies_negotiated() is False assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is False h.add_meta_context(nbd.CONTEXT_BASE_ALLOCATION) must_fail(h.can_meta_context, nbd.CONTEXT_BASE_ALLOCATION) # SET cannot succeed until SR is negotiated. count = 0 seen = False must_fail(h.opt_set_meta_context, lambda *args: f(42, *args)) assert count == 0 assert seen is False assert h.opt_structured_reply() is True assert h.get_structured_replies_negotiated() is True must_fail(h.can_meta_context, nbd.CONTEXT_BASE_ALLOCATION) # nbdkit does not match wildcard for SET, even though it does for LIST count = 0 seen = False h.clear_meta_contexts() h.add_meta_context("base:") r = h.opt_set_meta_context(lambda *args: f(42, *args)) assert r == count assert r == 0 assert seen is False assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is False # Negotiating with no contexts is not an error, but selects nothing count = 0 seen = False h.clear_meta_contexts() r = h.opt_set_meta_context(lambda *args: f(42, *args)) assert r == 0 assert r == count assert seen is False assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is False # Request 2 with expectation of 1; with set_request_meta_context off count = 0 seen = False h.add_meta_context("x-nosuch:context") h.add_meta_context(nbd.CONTEXT_BASE_ALLOCATION) h.set_request_meta_context(False) r = h.opt_set_meta_context(lambda *args: f(42, *args)) assert r == 1 assert count == 1 assert seen is True assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True # Transition to transmission phase; our last set should remain active h.clear_meta_contexts() h.add_meta_context("x-nosuch:context") h.opt_go() assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True # Now too late to set; but should not lose earlier state count = 0 seen = False must_fail(h.opt_set_meta_context, lambda *args: f(42, *args)) assert count == 0 assert seen is False assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True h.shutdown() libnbd-1.20.3/python/t/255-opt-set-meta-queries.py0000644000175000017500000000444414553477275015202 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") count = 0 seen = False def f(user_data, name): global count global seen assert user_data == 42 count = count + 1 if name == nbd.CONTEXT_BASE_ALLOCATION: seen = True # Get into negotiating state. h = nbd.NBD() h.set_opt_mode(True) h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "memory", "size=1M"]) # nbdkit does not match wildcard for SET, even though it does for LIST count = 0 seen = False r = h.opt_set_meta_context_queries(["base:"], lambda *args: f(42, *args)) assert r == count assert r == 0 assert seen is False assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is False # Negotiating with no contexts is not an error, but selects nothing. # An explicit empty list overrides a non-empty implicit list. count = 0 seen = False h.add_meta_context(nbd.CONTEXT_BASE_ALLOCATION) r = h.opt_set_meta_context_queries([], lambda *args: f(42, *args)) assert r == 0 assert r == count assert seen is False assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is False # Request 2 with expectation of 1. count = 0 seen = False r = h.opt_set_meta_context_queries( ["x-nosuch:context", nbd.CONTEXT_BASE_ALLOCATION], lambda *args: f(42, *args)) assert r == 1 assert count == 1 assert seen is True assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True # Transition to transmission phase; our last set should remain active h.set_request_meta_context(False) h.opt_go() assert h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) is True h.shutdown() libnbd-1.20.3/python/t/300-get-size.py0000644000175000017500000000175714553477304012723 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") expected = 1048576 h = nbd.NBD() h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "null", "size=%d" % expected]) actual = h.get_size() assert actual == expected libnbd-1.20.3/python/t/400-pread.py0000644000175000017500000001030414553477313012254 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") h = nbd.NBD() h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "pattern", "size=512"]) buf = h.pread(512, 0) print("%r" % buf) assert buf == (b'\x00\x00\x00\x00\x00\x00\x00\x00' + b'\x00\x00\x00\x00\x00\x00\x00\x08' + b'\x00\x00\x00\x00\x00\x00\x00\x10' + b'\x00\x00\x00\x00\x00\x00\x00\x18' + b'\x00\x00\x00\x00\x00\x00\x00 ' + b'\x00\x00\x00\x00\x00\x00\x00(' + b'\x00\x00\x00\x00\x00\x00\x000' + b'\x00\x00\x00\x00\x00\x00\x008' + b'\x00\x00\x00\x00\x00\x00\x00@' + b'\x00\x00\x00\x00\x00\x00\x00H' + b'\x00\x00\x00\x00\x00\x00\x00P' + b'\x00\x00\x00\x00\x00\x00\x00X' + b'\x00\x00\x00\x00\x00\x00\x00`' + b'\x00\x00\x00\x00\x00\x00\x00h' + b'\x00\x00\x00\x00\x00\x00\x00p' + b'\x00\x00\x00\x00\x00\x00\x00x' + b'\x00\x00\x00\x00\x00\x00\x00\x80' + b'\x00\x00\x00\x00\x00\x00\x00\x88' + b'\x00\x00\x00\x00\x00\x00\x00\x90' + b'\x00\x00\x00\x00\x00\x00\x00\x98' + b'\x00\x00\x00\x00\x00\x00\x00\xa0' + b'\x00\x00\x00\x00\x00\x00\x00\xa8' + b'\x00\x00\x00\x00\x00\x00\x00\xb0' + b'\x00\x00\x00\x00\x00\x00\x00\xb8' + b'\x00\x00\x00\x00\x00\x00\x00\xc0' + b'\x00\x00\x00\x00\x00\x00\x00\xc8' + b'\x00\x00\x00\x00\x00\x00\x00\xd0' + b'\x00\x00\x00\x00\x00\x00\x00\xd8' + b'\x00\x00\x00\x00\x00\x00\x00\xe0' + b'\x00\x00\x00\x00\x00\x00\x00\xe8' + b'\x00\x00\x00\x00\x00\x00\x00\xf0' + b'\x00\x00\x00\x00\x00\x00\x00\xf8' + b'\x00\x00\x00\x00\x00\x00\x01\x00' + b'\x00\x00\x00\x00\x00\x00\x01\x08' + b'\x00\x00\x00\x00\x00\x00\x01\x10' + b'\x00\x00\x00\x00\x00\x00\x01\x18' + b'\x00\x00\x00\x00\x00\x00\x01 ' + b'\x00\x00\x00\x00\x00\x00\x01(' + b'\x00\x00\x00\x00\x00\x00\x010' + b'\x00\x00\x00\x00\x00\x00\x018' + b'\x00\x00\x00\x00\x00\x00\x01@' + b'\x00\x00\x00\x00\x00\x00\x01H' + b'\x00\x00\x00\x00\x00\x00\x01P' + b'\x00\x00\x00\x00\x00\x00\x01X' + b'\x00\x00\x00\x00\x00\x00\x01`' + b'\x00\x00\x00\x00\x00\x00\x01h' + b'\x00\x00\x00\x00\x00\x00\x01p' + b'\x00\x00\x00\x00\x00\x00\x01x' + b'\x00\x00\x00\x00\x00\x00\x01\x80' + b'\x00\x00\x00\x00\x00\x00\x01\x88' + b'\x00\x00\x00\x00\x00\x00\x01\x90' + b'\x00\x00\x00\x00\x00\x00\x01\x98' + b'\x00\x00\x00\x00\x00\x00\x01\xa0' + b'\x00\x00\x00\x00\x00\x00\x01\xa8' + b'\x00\x00\x00\x00\x00\x00\x01\xb0' + b'\x00\x00\x00\x00\x00\x00\x01\xb8' + b'\x00\x00\x00\x00\x00\x00\x01\xc0' + b'\x00\x00\x00\x00\x00\x00\x01\xc8' + b'\x00\x00\x00\x00\x00\x00\x01\xd0' + b'\x00\x00\x00\x00\x00\x00\x01\xd8' + b'\x00\x00\x00\x00\x00\x00\x01\xe0' + b'\x00\x00\x00\x00\x00\x00\x01\xe8' + b'\x00\x00\x00\x00\x00\x00\x01\xf0' + b'\x00\x00\x00\x00\x00\x00\x01\xf8') libnbd-1.20.3/python/t/405-pread-structured.py0000644000175000017500000000434614553477325014477 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import errno import sys from array import array import os nbdkit = os.getenv("NBDKIT", "nbdkit") h = nbd.NBD() h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "pattern", "size=512"]) # The nbdkit pattern plugin exposes 64-bit numbers in bigendian order arr = array('q', range(0, 512, 8)) if sys.byteorder == 'little': arr.byteswap() expected = memoryview(arr).cast('B') stash = None def f(user_data, buf2, offset, s, err): assert err.value == 0 err.value = errno.EPROTO if user_data != 42: raise ValueError('unexpected user_data') assert buf2 == expected try: buf2[0] = 1 assert False except TypeError: pass assert offset == 0 assert s == nbd.READ_DATA global stash stash = buf2 buf = h.pread_structured(512, 0, lambda *args: f(42, *args)) print("%r" % buf) assert buf == expected # The callback can stash its slice; as long as that is live, we can't # resize buf but can view changes in buf through the slice try: buf.pop() assert False except BufferError: pass buf[0] ^= 1 assert buf == stash stash = None buf.pop() # Tests of error handling buf = h.pread_structured(512, 0, lambda *args: f(42, *args), nbd.CMD_FLAG_DF) print("%r" % buf) assert buf == expected try: buf = h.pread_structured(512, 0, lambda *args: f(43, *args), nbd.CMD_FLAG_DF) assert False except nbd.Error as ex: assert ex.errnum == errno.EPROTO libnbd-1.20.3/python/t/410-pwrite.py0000644000175000017500000000235414553477342012504 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") buf1 = bytearray(512) buf1[10] = 1 buf1[510] = 0x55 buf1[511] = 0xAA datafile = "410-pwrite.data" with open(datafile, "wb") as f: f.truncate(512) h = nbd.NBD() h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "file", datafile]) h.pwrite(buf1, 0, nbd.CMD_FLAG_FUA) buf2 = h.pread(512, 0) assert buf1 == buf2 with open(datafile, "rb") as f: content = f.read() assert buf1 == content os.unlink(datafile) libnbd-1.20.3/python/t/460-block-status.py0000644000175000017500000000326714553477350013615 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") script = "%s/../tests/meta-base-allocation.sh" % os.getenv("srcdir", ".") h = nbd.NBD() h.add_meta_context("base:allocation") h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "sh", script]) entries = [] def f(user_data, metacontext, offset, e, err): global entries assert user_data == 42 assert err.value == 0 if metacontext != "base:allocation": return entries = e h.block_status(65536, 0, lambda *args: f(42, *args)) assert entries == [8192, 0, 8192, 1, 16384, 3, 16384, 2, 16384, 0] h.block_status(1024, 32256, lambda *args: f(42, *args)) print("entries = %r" % entries) assert entries == [512, 3, 16384, 2] h.block_status(1024, 32256, lambda *args: f(42, *args), nbd.CMD_FLAG_REQ_ONE) print("entries = %r" % entries) assert entries == [512, 3] libnbd-1.20.3/python/t/465-block-status-64.py0000644000175000017500000000336314553477427014053 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") script = "%s/../tests/meta-base-allocation.sh" % os.getenv("srcdir", ".") h = nbd.NBD() h.add_meta_context("base:allocation") h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "sh", script]) entries = [] def f(user_data, metacontext, offset, e, err): global entries assert user_data == 42 assert err.value == 0 if metacontext != "base:allocation": return entries = e h.block_status_64(65536, 0, lambda *args: f(42, *args)) print("entries = %r" % entries) assert entries == [(8192, 0), (8192, 1), (16384, 3), (16384, 2), (16384, 0)] h.block_status_64(1024, 32256, lambda *args: f(42, *args)) print("entries = %r" % entries) assert entries == [(512, 3), (16384, 2)] h.block_status_64(1024, 32256, lambda *args: f(42, *args), nbd.CMD_FLAG_REQ_ONE) print("entries = %r" % entries) assert entries == [(512, 3)] libnbd-1.20.3/python/t/500-aio-pread.py0000644000175000017500000000413514553477360013032 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import sys from array import array import os nbdkit = os.getenv("NBDKIT", "nbdkit") h = nbd.NBD() h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "pattern", "size=1024"]) buf = nbd.Buffer(512) cookie = h.aio_pread(buf, 0) while not h.aio_command_completed(cookie): h.poll(-1) buf1 = buf.to_bytearray() # Prove that .to_bytearray() defaults to copying, even if buf is reused cookie = h.aio_pread(buf, 512) while not h.aio_command_completed(cookie): h.poll(-1) buf2 = buf.to_bytearray() print("%r" % buf1) # The nbdkit pattern plugin exposes 64-bit numbers in bigendian order arr = array('q', range(0, 1024, 8)) if sys.byteorder == 'little': arr.byteswap() assert buf1 == memoryview(arr).cast('B')[:512] assert buf2 == memoryview(arr).cast('B')[512:] # It is also possible to read directly into any writeable buffer-like object. # However, aio.Buffer(n) with h.set_pread_initialize(False) may be faster, # because it skips python's pre-initialization of bytearray(n). try: h.aio_pread(bytes(512), 0) assert False except BufferError: pass buf3 = bytearray(512) cookie = h.aio_pread(buf3, 0) # While the read is pending, the buffer cannot be resized try: buf3.pop() assert False except BufferError: pass while not h.aio_command_completed(cookie): h.poll(-1) buf3.append(buf3.pop()) assert buf3 == buf1 libnbd-1.20.3/python/t/505-aio-pread-callback.py0000644000175000017500000000675414553477367014611 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import errno import sys from array import array import os nbdkit = os.getenv("NBDKIT", "nbdkit") h = nbd.NBD() h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "pattern", "size=512"]) # The nbdkit pattern plugin exposes 64-bit numbers in bigendian order arr = array('q', range(0, 512, 8)) if sys.byteorder == 'little': arr.byteswap() expected = memoryview(arr).cast('B') stash = None def chunk(user_data, buf2, offset, s, err): print("in chunk, user_data %d" % user_data) assert err.value == 0 err.value = errno.EPROTO if user_data != 42: raise ValueError('unexpected user_data') assert buf2 == expected assert offset == 0 assert s == nbd.READ_DATA global stash stash = buf2 def callback(user_data, err): print("in callback, user_data %d,%d" % user_data) if user_data[0] == 42: assert err.value == 0 else: assert err.value == errno.EPROTO err.value = errno.ENOMEM if user_data[1] != 42: raise ValueError('unexpected user_data') # First try: succeed in both callbacks buf = bytearray(512) cookie = h.aio_pread_structured(buf, 0, lambda *args: chunk(42, *args), lambda *args: callback((42, 42), *args)) while not h.aio_command_completed(cookie): h.poll(-1) print("%r" % buf) assert buf == expected # The callback can stash its slice; as long as that is live, we can't # resize buf but can view changes in buf through the slice try: buf.pop() assert False except BufferError: pass buf[0] ^= 1 assert buf == stash stash = None buf.pop() # Second try: fail only during callback buf = nbd.Buffer(512) cookie = h.aio_pread_structured(buf, 0, lambda *args: chunk(42, *args), lambda *args: callback((42, 43), *args)) try: while not h.aio_command_completed(cookie): h.poll(-1) assert False except nbd.Error as ex: assert ex.errnum == errno.ENOMEM # Third try: fail during both buf = nbd.Buffer(512) cookie = h.aio_pread_structured(buf, 0, lambda *args: chunk(43, *args), lambda *args: callback((43, 43), *args)) try: while not h.aio_command_completed(cookie): h.poll(-1) assert False except nbd.Error as ex: assert ex.errnum == errno.ENOMEM # Fourth try: fail only during chunk buf = nbd.Buffer(512) cookie = h.aio_pread_structured(buf, 0, lambda *args: chunk(43, *args), lambda *args: callback((43, 42), *args)) try: while not h.aio_command_completed(cookie): h.poll(-1) assert False except nbd.Error as ex: assert ex.errnum == errno.EPROTO libnbd-1.20.3/python/t/510-aio-pwrite.py0000644000175000017500000000443614553477376013265 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") buf = bytearray(512) buf[10] = 1 buf[510] = 0x55 buf[511] = 0xAA datafile = "510-pwrite.data" with open(datafile, "wb") as f: f.truncate(512) h = nbd.NBD() h.connect_command([nbdkit, "-s", "--exit-with-parent", "-v", "file", datafile]) buf1 = nbd.Buffer.from_bytearray(buf) cookie = h.aio_pwrite(buf1, 0, flags=nbd.CMD_FLAG_FUA) while not h.aio_command_completed(cookie): h.poll(-1) buf2 = nbd.Buffer(512) cookie = h.aio_pread(buf2, 0) while not h.aio_command_completed(cookie): h.poll(-1) assert buf == buf2.to_bytearray() # Check that .from_bytearray() defaults to copying buf[511] = 0x55 assert buf != buf1.to_bytearray() buf[511] = 0xAA assert buf == buf1.to_bytearray() with open(datafile, "rb") as f: content = f.read() assert buf == content # Also check that an uninitialized buffer doesn't leak heap contents buf3 = nbd.Buffer(512) cookie = h.aio_pwrite(buf3, 0, flags=nbd.CMD_FLAG_FUA) while not h.aio_command_completed(cookie): h.poll(-1) with open(datafile, "rb") as f: content = f.read() assert nbd.Buffer.from_bytearray(content).is_zero() # It is also possible to write any buffer-like object. # While the write is pending, the buffer cannot be resized cookie = h.aio_pwrite(buf, 0, flags=nbd.CMD_FLAG_FUA) try: buf.pop() assert False except BufferError: pass while not h.aio_command_completed(cookie): h.poll(-1) buf.append(buf.pop()) with open(datafile, "rb") as f: content = f.read() assert buf == content os.unlink(datafile) libnbd-1.20.3/python/t/580-aio-is-zero.py0000644000175000017500000000527314525371754013342 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # This tests the nbd.Buffer is_zero method. We can do this entirely # without using the NBD protocol. import nbd # Simplest case: A Buffer initialized with zeros should be zero. ba = bytearray(2**20) buf = nbd.Buffer.from_bytearray(ba) assert buf.size() == 2**20 assert len(buf) == 2**20 assert buf.is_zero() is True # The above buffer is 2**20 (= 1MB), slices of it should also be zero. for i in range(0, 7): assert buf.is_zero(i * 2**17, 2**17) is True # Alternative initializations buf = nbd.Buffer.from_bytearray(1024) assert buf.size() == 1024 assert buf.is_zero() is True buf = nbd.Buffer.from_bytearray(b"\0" * 1024) assert buf.size() == 1024 assert buf.is_zero() is True # A Buffer initialized with non-zeroes should not be zero. ba = bytearray(b'\xff') * 2**20 buf = nbd.Buffer.from_bytearray(ba) assert buf.is_zero() is False # Slices should not be zero. for i in range(0, 15): assert buf.is_zero(i * 2**16, 2**16) is False # Alternative initializations buf = nbd.Buffer.from_bytearray(b"Hello world") assert buf.size() == len(b"Hello world") assert buf.is_zero() is False buf = nbd.Buffer.from_bytearray([0x31, 0x32, 0x33]) assert buf.to_bytearray() == b"123" assert buf.is_zero() is False # Buffer with a block of non-zeroes and block of zeroes. ba = bytearray(b'\xff') * 2**20 + bytearray(2**20) buf = nbd.Buffer.from_bytearray(ba) assert buf.is_zero() is False assert buf.is_zero(0, 2**20) is False assert buf.is_zero(2**20) is True assert buf.is_zero(2**19) is False assert buf.is_zero(2**20, 2**19) is True assert buf.is_zero(2**20-1, 1) is False assert buf.is_zero(2**20, 1) is True assert buf.is_zero(0, 1) is False assert buf.is_zero(2**21-1, 1) is True # A buffer created with only a size is generally uninitialized until # used with aio_pread; but it will be zeroed if accessed prematurely buf = nbd.Buffer(1024) assert buf.size() == 1024 assert len(buf) == 1024 assert buf.is_zero() is True assert nbd.Buffer.from_bytearray(buf.to_bytearray()).is_zero() libnbd-1.20.3/python/t/585-aio-buffer-share.py0000644000175000017500000000312514525371754014322 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # This tests various nbd.Buffer methods. We can do this entirely # without using the NBD protocol. import nbd # Use of to/from_bytearray always creates copies ba = bytearray(512) buf = nbd.Buffer.from_bytearray(ba) ba.append(1) assert len(ba) == 513 assert len(buf) == 512 assert buf.is_zero() is True assert buf.to_bytearray() is not ba # Use of to/from_buffer shares the same buffer buf = nbd.Buffer.from_buffer(ba) assert buf.is_zero() is False assert len(buf) == 513 ba.pop() assert buf.is_zero() is True assert len(buf) == 512 assert buf.to_buffer() is ba # Even though nbd.Buffer(n) start uninitialized, we sanitize before exporting. # This test cheats and examines the private member ._init buf = nbd.Buffer(512) assert buf.is_zero() is True assert hasattr(buf, '_init') is False assert buf.to_buffer() == bytearray(512) assert hasattr(buf, '_init') is True libnbd-1.20.3/python/t/590-aio-copy.py0000644000175000017500000001141214553477023012712 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import select import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") disk_size = 512 * 1024 * 1024 bs = 65536 max_reads_in_flight = 16 bytes_read = 0 bytes_written = 0 def asynch_copy(src, dst): size = src.get_size() # This is our reading position in the source. soff = 0 writes = [] # This callback is called when any pread from the source # has completed. def read_completed(buf, offset, error): if error.value != 0: raise RuntimeError(f"read: {os.strerror(error.value)}") global bytes_read bytes_read += buf.size() wr = (buf, offset) writes.append(wr) # By returning 1 here we auto-retire the pread command. return 1 # This callback is called when any pwrite to the destination # has completed. def write_completed(buf, error): if error.value != 0: raise RuntimeError(f"write: {os.strerror(error.value)}") global bytes_written bytes_written += buf.size() # By returning 1 here we auto-retire the pwrite command. return 1 # The main loop which runs until we have finished reading and # there are no more commands in flight. while (soff < size or src.aio_in_flight() > 0 or dst.aio_in_flight() > 0 or len(writes) > 0): # If we're able to submit more reads from the source # then do so now. if soff < size and src.aio_in_flight() < max_reads_in_flight: bufsize = min(bs, size - soff) buf = nbd.Buffer(bufsize) # NB: Python lambdas are BROKEN. # https://stackoverflow.com/questions/2295290 src.aio_pread(buf, soff, lambda err, buf=buf, soff=soff: read_completed(buf, soff, err)) soff += bufsize # If there are any write commands waiting to be issued # to the destination, send them now. for buf, offset in writes: # See above link about broken Python lambdas. dst.aio_pwrite(buf, offset, lambda err, buf=buf: write_completed(buf, err)) writes = [] poll = select.poll() sfd = src.aio_get_fd() dfd = dst.aio_get_fd() sevents = 0 devents = 0 if src.aio_get_direction() & nbd.AIO_DIRECTION_READ: sevents += select.POLLIN if src.aio_get_direction() & nbd.AIO_DIRECTION_WRITE: sevents += select.POLLOUT if dst.aio_get_direction() & nbd.AIO_DIRECTION_READ: devents += select.POLLIN if dst.aio_get_direction() & nbd.AIO_DIRECTION_WRITE: devents += select.POLLOUT poll.register(sfd, sevents) poll.register(dfd, devents) for (fd, revents) in poll.poll(): # The direction of each handle can change since we # slept in the select. if fd == sfd and revents & select.POLLIN and \ src.aio_get_direction() & nbd.AIO_DIRECTION_READ: src.aio_notify_read() elif fd == sfd and revents & select.POLLOUT and \ src.aio_get_direction() & nbd.AIO_DIRECTION_WRITE: src.aio_notify_write() elif fd == dfd and revents & select.POLLIN and \ dst.aio_get_direction() & nbd.AIO_DIRECTION_READ: dst.aio_notify_read() elif fd == dfd and revents & select.POLLOUT and \ dst.aio_get_direction() & nbd.AIO_DIRECTION_WRITE: dst.aio_notify_write() src = nbd.NBD() src.set_handle_name("src") dst = nbd.NBD() dst.set_handle_name("dst") src.connect_command([nbdkit, "-s", "--exit-with-parent", "-r", "pattern", "size=%d" % disk_size]) dst.connect_command([nbdkit, "-s", "--exit-with-parent", "memory", "size=%d" % disk_size]) asynch_copy(src, dst) print("bytes read: %d written: %d size: %d" % (bytes_read, bytes_written, disk_size)) assert bytes_read == disk_size assert bytes_written == disk_size libnbd-1.20.3/python/t/600-debug-callback.py0000644000175000017500000000216314553477405014011 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") h = nbd.NBD() messages = [] def f(id, context, msg): global messages assert id == 42 messages.append(msg) h.set_debug_callback(lambda *args: f(42, *args)) h.connect_command([nbdkit, "-s", "--exit-with-parent", "null"]) h.shutdown() # Try to trigger garbage collection of h h = None print("%r" % messages) libnbd-1.20.3/python/t/610-exception.py0000644000175000017500000000211514525371754013164 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd h = nbd.NBD() try: # This will always throw an exception because the handle is not # connected. h.pread(0, 0) except nbd.Error as ex: print("string = %s" % ex.string) print("errno = %s" % ex.errno) print("errnum = %d" % ex.errnum) exit(0) # If we reach here then we didn't catch the exception above. exit(1) libnbd-1.20.3/python/t/620-stats.py0000644000175000017500000000434714553477412012335 # libnbd Python bindings # Copyright Red Hat # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import nbd import os nbdkit = os.getenv("NBDKIT", "nbdkit") h = nbd.NBD() # Pre-connection, stats start out at 0 bs0 = h.stats_bytes_sent() cs0 = h.stats_chunks_sent() br0 = h.stats_bytes_received() cr0 = h.stats_chunks_received() assert bs0 == 0 assert cs0 == 0 assert br0 == 0 assert cr0 == 0 # Connection performs handshaking, which increments stats. # The number of bytes/chunks here may grow over time as more features get # automatically negotiated, so merely check that they are non-zero. h.connect_command([nbdkit, "-s", "--exit-with-parent", "null"]) bs1 = h.stats_bytes_sent() cs1 = h.stats_chunks_sent() br1 = h.stats_bytes_received() cr1 = h.stats_chunks_received() assert cs1 > 0 assert bs1 > cs1 assert cr1 > 0 assert br1 > cr1 # A flush command should be one chunk out, one chunk back (even if # structured replies are in use) h.flush() bs2 = h.stats_bytes_sent() cs2 = h.stats_chunks_sent() br2 = h.stats_bytes_received() cr2 = h.stats_chunks_received() assert bs2 == bs1 + 28 assert cs2 == cs1 + 1 assert br2 == br1 + 16 # assumes nbdkit uses simple reply assert cr2 == cr1 + 1 # Stats are still readable after the connection closes; we don't know if # the server sent reply bytes to our NBD_CMD_DISC, so don't insist on it. h.shutdown() bs3 = h.stats_bytes_sent() cs3 = h.stats_chunks_sent() br3 = h.stats_bytes_received() cr3 = h.stats_chunks_received() assert bs3 > bs2 assert cs3 == cs2 + 1 assert br3 >= br2 assert cr3 == cr2 + (br3 > br2) # Try to trigger garbage collection of h h = None libnbd-1.20.3/python/Makefile.am0000644000175000017500000000404014553475113012073 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # common-rules.mk is included in every Makefile.am. # subdir-rules.mk is included only in subdirectories. 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you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA source ../tests/functions.sh set -e set -x # This is used as an environment variable by some of the tests so they # can locate static files in the source dir. export srcdir="@srcdir@" # Export $NBDKIT shell variable (set in tests/functions.sh) so the # tests may use it. export NBDKIT shopt -s nullglob for f in "@srcdir@"/t/*.py; do basename "$f" $PYTHON "$f" done libnbd-1.20.3/python/handle.c0000644000175000017500000001227714525371754011456 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* These are the hand-written Python module bindings. The majority of * bindings are generated, see python/methods.c */ #include #define PY_SSIZE_T_CLEAN 1 #include #if PY_MAJOR_VERSION == 2 #error \ These bindings will not work with Python 2. \ Recompile using Python 3 or use ./configure --disable-python. #endif #include #include #include #include #include "iszero.h" #include "version.h" #include "methods.h" static inline PyObject * put_handle (struct nbd_handle *h) { assert (h); return PyCapsule_New (h, "nbd_handle", NULL); } PyObject * nbd_internal_py_create (PyObject *self, PyObject *args) { struct nbd_handle *h; if (!PyArg_ParseTuple (args, ":nbd_create")) return NULL; h = nbd_create (); if (h == NULL) { PyErr_SetString (PyExc_RuntimeError, nbd_get_error ()); return NULL; } return put_handle (h); } PyObject * nbd_internal_py_close (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; if (!PyArg_ParseTuple (args, "O:nbd_close", &py_h)) return NULL; h = get_handle (py_h); nbd_close (h); Py_INCREF (Py_None); return Py_None; } /* A wrapper around common/utils/version.c:display_version, used when * you do "nbdsh --version". */ PyObject * nbd_internal_py_display_version (PyObject *self, PyObject *args) { const char *program_name; if (!PyArg_ParseTuple (args, "s:display_version", &program_name)) return NULL; display_version (program_name); Py_INCREF (Py_None); return Py_None; } /* Return new reference to MemoryView wrapping buffer or aio_buffer contents. * buffertype is PyBUF_READ or PyBUF_WRITE, for how the buffer will be used * (remember, aio_pwrite READS the buffer, aio_pread WRITES into the buffer). */ PyObject * nbd_internal_py_get_aio_view (PyObject *object, int buffertype) { PyObject *buffer = NULL; if (PyObject_CheckBuffer (object)) buffer = object; else if (PyObject_IsInstance (object, nbd_internal_py_get_nbd_buffer_type ())) { buffer = PyObject_GetAttrString (object, "_o"); if (buffertype == PyBUF_READ && ! PyObject_HasAttrString (object, "_init")) { assert (PyByteArray_Check (buffer)); memset (PyByteArray_AS_STRING (buffer), 0, PyByteArray_GET_SIZE (buffer)); if (PyObject_SetAttrString (object, "_init", Py_True) < 0) return NULL; } } if (buffer) return PyMemoryView_GetContiguous (buffer, buffertype, 'A'); PyErr_SetString (PyExc_TypeError, "aio_buffer: expecting buffer or nbd.Buffer instance"); return NULL; } int nbd_internal_py_init_aio_buffer (PyObject *object) { if (PyObject_IsInstance (object, nbd_internal_py_get_nbd_buffer_type ())) return PyObject_SetAttrString (object, "_init", Py_True); return 0; } /* Allocate an uninitialized persistent buffer used for nbd_aio_pread. */ PyObject * nbd_internal_py_alloc_aio_buffer (PyObject *self, PyObject *args) { Py_ssize_t len; if (!PyArg_ParseTuple (args, "n:nbd_internal_py_alloc_aio_buffer", &len)) return NULL; /* Constructing bytearray(len) in python zeroes the memory; doing it this * way gives uninitialized memory. This correctly flags negative len. */ return PyByteArray_FromStringAndSize (NULL, len); } PyObject * nbd_internal_py_aio_buffer_is_zero (PyObject *self, PyObject *args) { Py_buffer buf; Py_ssize_t offset, size; int init; PyObject *ret = NULL; if (!PyArg_ParseTuple (args, "y*nnp:nbd_internal_py_aio_buffer_is_zero", &buf, &offset, &size, &init)) return NULL; if (size == 0) { ret = Py_True; goto out; } /* Check the bounds of the offset. */ if (offset < 0 || offset > buf.len) { PyErr_SetString (PyExc_IndexError, "offset out of range"); goto out; } /* Compute or check the length. */ if (size == -1) size = buf.len - offset; else if (size < 0) { PyErr_SetString (PyExc_IndexError, "size cannot be negative, " "except -1 to mean to the end of the buffer"); goto out; } else if ((size_t)offset + size > buf.len) { PyErr_SetString (PyExc_IndexError, "size out of range"); goto out; } if (!init || is_zero (buf.buf + offset, size)) ret = Py_True; else ret = Py_False; out: PyBuffer_Release (&buf); Py_XINCREF (ret); return ret; } libnbd-1.20.3/python/libnbdmod.c0000444000175000017500000004173714603303744012145 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #define PY_SSIZE_T_CLEAN 1 #include #include #include #include #include #include "methods.h" static PyMethodDef methods[] = { { "create", nbd_internal_py_create, METH_VARARGS, NULL }, { "close", nbd_internal_py_close, METH_VARARGS, NULL }, { "display_version", nbd_internal_py_display_version, METH_VARARGS, NULL }, { "alloc_aio_buffer", nbd_internal_py_alloc_aio_buffer, METH_VARARGS, NULL }, { "aio_buffer_is_zero", nbd_internal_py_aio_buffer_is_zero, METH_VARARGS, NULL }, { "set_debug", nbd_internal_py_set_debug, METH_VARARGS, NULL }, { "get_debug", nbd_internal_py_get_debug, METH_VARARGS, NULL }, { "set_debug_callback", nbd_internal_py_set_debug_callback, METH_VARARGS, NULL }, { "clear_debug_callback", nbd_internal_py_clear_debug_callback, METH_VARARGS, NULL }, { "stats_bytes_sent", nbd_internal_py_stats_bytes_sent, METH_VARARGS, NULL }, { "stats_chunks_sent", nbd_internal_py_stats_chunks_sent, METH_VARARGS, NULL }, { "stats_bytes_received", nbd_internal_py_stats_bytes_received, METH_VARARGS, NULL }, { "stats_chunks_received", nbd_internal_py_stats_chunks_received, METH_VARARGS, NULL }, { "set_handle_name", nbd_internal_py_set_handle_name, METH_VARARGS, NULL }, { "get_handle_name", nbd_internal_py_get_handle_name, METH_VARARGS, NULL }, { "set_private_data", nbd_internal_py_set_private_data, METH_VARARGS, NULL }, { "get_private_data", nbd_internal_py_get_private_data, METH_VARARGS, NULL }, { "set_export_name", nbd_internal_py_set_export_name, METH_VARARGS, NULL }, { "get_export_name", nbd_internal_py_get_export_name, METH_VARARGS, NULL }, { "set_request_block_size", nbd_internal_py_set_request_block_size, METH_VARARGS, NULL }, { "get_request_block_size", nbd_internal_py_get_request_block_size, METH_VARARGS, NULL }, { "set_full_info", nbd_internal_py_set_full_info, METH_VARARGS, NULL }, { "get_full_info", nbd_internal_py_get_full_info, METH_VARARGS, NULL }, { "get_canonical_export_name", nbd_internal_py_get_canonical_export_name, METH_VARARGS, NULL }, { "get_export_description", nbd_internal_py_get_export_description, METH_VARARGS, NULL }, { "set_tls", nbd_internal_py_set_tls, METH_VARARGS, NULL }, { "get_tls", nbd_internal_py_get_tls, METH_VARARGS, NULL }, { "get_tls_negotiated", nbd_internal_py_get_tls_negotiated, METH_VARARGS, NULL }, { "set_tls_certificates", nbd_internal_py_set_tls_certificates, METH_VARARGS, NULL }, { "set_tls_verify_peer", nbd_internal_py_set_tls_verify_peer, METH_VARARGS, NULL }, { "get_tls_verify_peer", nbd_internal_py_get_tls_verify_peer, METH_VARARGS, NULL }, { "set_tls_username", nbd_internal_py_set_tls_username, METH_VARARGS, NULL }, { "get_tls_username", nbd_internal_py_get_tls_username, METH_VARARGS, NULL }, { "set_tls_psk_file", nbd_internal_py_set_tls_psk_file, METH_VARARGS, NULL }, { "set_request_extended_headers", nbd_internal_py_set_request_extended_headers, METH_VARARGS, NULL }, { "get_request_extended_headers", nbd_internal_py_get_request_extended_headers, METH_VARARGS, NULL }, { "get_extended_headers_negotiated", nbd_internal_py_get_extended_headers_negotiated, METH_VARARGS, NULL }, { "set_request_structured_replies", nbd_internal_py_set_request_structured_replies, METH_VARARGS, NULL }, { "get_request_structured_replies", nbd_internal_py_get_request_structured_replies, METH_VARARGS, NULL }, { "get_structured_replies_negotiated", nbd_internal_py_get_structured_replies_negotiated, METH_VARARGS, NULL }, { "set_request_meta_context", nbd_internal_py_set_request_meta_context, METH_VARARGS, NULL }, { "get_request_meta_context", nbd_internal_py_get_request_meta_context, METH_VARARGS, NULL }, { "set_handshake_flags", nbd_internal_py_set_handshake_flags, METH_VARARGS, NULL }, { "get_handshake_flags", nbd_internal_py_get_handshake_flags, METH_VARARGS, NULL }, { "set_pread_initialize", nbd_internal_py_set_pread_initialize, METH_VARARGS, NULL }, { "get_pread_initialize", nbd_internal_py_get_pread_initialize, METH_VARARGS, NULL }, { "set_strict_mode", nbd_internal_py_set_strict_mode, METH_VARARGS, NULL }, { "get_strict_mode", nbd_internal_py_get_strict_mode, METH_VARARGS, NULL }, { "set_opt_mode", nbd_internal_py_set_opt_mode, METH_VARARGS, NULL }, { "get_opt_mode", nbd_internal_py_get_opt_mode, METH_VARARGS, NULL }, { "opt_go", nbd_internal_py_opt_go, METH_VARARGS, NULL }, { "opt_abort", nbd_internal_py_opt_abort, METH_VARARGS, NULL }, { "opt_starttls", nbd_internal_py_opt_starttls, METH_VARARGS, NULL }, { "opt_extended_headers", nbd_internal_py_opt_extended_headers, METH_VARARGS, NULL }, { "opt_structured_reply", nbd_internal_py_opt_structured_reply, METH_VARARGS, NULL }, { "opt_list", nbd_internal_py_opt_list, METH_VARARGS, NULL }, { "opt_info", nbd_internal_py_opt_info, METH_VARARGS, NULL }, { "opt_list_meta_context", nbd_internal_py_opt_list_meta_context, METH_VARARGS, NULL }, { "opt_list_meta_context_queries", nbd_internal_py_opt_list_meta_context_queries, METH_VARARGS, NULL }, { "opt_set_meta_context", nbd_internal_py_opt_set_meta_context, METH_VARARGS, NULL }, { "opt_set_meta_context_queries", nbd_internal_py_opt_set_meta_context_queries, METH_VARARGS, NULL }, { "add_meta_context", nbd_internal_py_add_meta_context, METH_VARARGS, NULL }, { "get_nr_meta_contexts", nbd_internal_py_get_nr_meta_contexts, METH_VARARGS, NULL }, { "get_meta_context", nbd_internal_py_get_meta_context, METH_VARARGS, NULL }, { "clear_meta_contexts", nbd_internal_py_clear_meta_contexts, METH_VARARGS, NULL }, { "set_uri_allow_transports", nbd_internal_py_set_uri_allow_transports, METH_VARARGS, NULL }, { "set_uri_allow_tls", nbd_internal_py_set_uri_allow_tls, METH_VARARGS, NULL }, { "set_uri_allow_local_file", nbd_internal_py_set_uri_allow_local_file, METH_VARARGS, NULL }, { "connect_uri", nbd_internal_py_connect_uri, METH_VARARGS, NULL }, { "connect_unix", nbd_internal_py_connect_unix, METH_VARARGS, NULL }, { "connect_vsock", nbd_internal_py_connect_vsock, METH_VARARGS, NULL }, { "connect_tcp", nbd_internal_py_connect_tcp, METH_VARARGS, NULL }, { "connect_socket", nbd_internal_py_connect_socket, METH_VARARGS, NULL }, { "connect_command", nbd_internal_py_connect_command, METH_VARARGS, NULL }, { "connect_systemd_socket_activation", nbd_internal_py_connect_systemd_socket_activation, METH_VARARGS, NULL }, { "set_socket_activation_name", nbd_internal_py_set_socket_activation_name, METH_VARARGS, NULL }, { "get_socket_activation_name", nbd_internal_py_get_socket_activation_name, METH_VARARGS, NULL }, { "is_read_only", nbd_internal_py_is_read_only, METH_VARARGS, NULL }, { "can_flush", nbd_internal_py_can_flush, METH_VARARGS, NULL }, { "can_fua", nbd_internal_py_can_fua, METH_VARARGS, NULL }, { "is_rotational", nbd_internal_py_is_rotational, METH_VARARGS, NULL }, { "can_trim", nbd_internal_py_can_trim, METH_VARARGS, NULL }, { "can_zero", nbd_internal_py_can_zero, METH_VARARGS, NULL }, { "can_fast_zero", nbd_internal_py_can_fast_zero, METH_VARARGS, NULL }, { "can_block_status_payload", nbd_internal_py_can_block_status_payload, METH_VARARGS, NULL }, { "can_df", nbd_internal_py_can_df, METH_VARARGS, NULL }, { "can_multi_conn", nbd_internal_py_can_multi_conn, METH_VARARGS, NULL }, { "can_cache", nbd_internal_py_can_cache, METH_VARARGS, NULL }, { "can_meta_context", nbd_internal_py_can_meta_context, METH_VARARGS, NULL }, { "get_protocol", nbd_internal_py_get_protocol, METH_VARARGS, NULL }, { "get_size", nbd_internal_py_get_size, METH_VARARGS, NULL }, { "get_block_size", nbd_internal_py_get_block_size, METH_VARARGS, NULL }, { "pread", nbd_internal_py_pread, METH_VARARGS, NULL }, { "pread_structured", nbd_internal_py_pread_structured, METH_VARARGS, NULL }, { "pwrite", nbd_internal_py_pwrite, METH_VARARGS, NULL }, { "shutdown", nbd_internal_py_shutdown, METH_VARARGS, NULL }, { "flush", nbd_internal_py_flush, METH_VARARGS, NULL }, { "trim", nbd_internal_py_trim, METH_VARARGS, NULL }, { "cache", nbd_internal_py_cache, METH_VARARGS, NULL }, { "zero", nbd_internal_py_zero, METH_VARARGS, NULL }, { "block_status", nbd_internal_py_block_status, METH_VARARGS, NULL }, { "block_status_64", nbd_internal_py_block_status_64, METH_VARARGS, NULL }, { "block_status_filter", nbd_internal_py_block_status_filter, METH_VARARGS, NULL }, { "poll", nbd_internal_py_poll, METH_VARARGS, NULL }, { "poll2", nbd_internal_py_poll2, METH_VARARGS, NULL }, { "aio_connect", nbd_internal_py_aio_connect, METH_VARARGS, NULL }, { "aio_connect_uri", nbd_internal_py_aio_connect_uri, METH_VARARGS, NULL }, { "aio_connect_unix", nbd_internal_py_aio_connect_unix, METH_VARARGS, NULL }, { "aio_connect_vsock", nbd_internal_py_aio_connect_vsock, METH_VARARGS, NULL }, { "aio_connect_tcp", nbd_internal_py_aio_connect_tcp, METH_VARARGS, NULL }, { "aio_connect_socket", nbd_internal_py_aio_connect_socket, METH_VARARGS, NULL }, { "aio_connect_command", nbd_internal_py_aio_connect_command, METH_VARARGS, NULL }, { "aio_connect_systemd_socket_activation", nbd_internal_py_aio_connect_systemd_socket_activation, METH_VARARGS, NULL }, { "aio_opt_go", nbd_internal_py_aio_opt_go, METH_VARARGS, NULL }, { "aio_opt_abort", nbd_internal_py_aio_opt_abort, METH_VARARGS, NULL }, { "aio_opt_starttls", nbd_internal_py_aio_opt_starttls, METH_VARARGS, NULL }, { "aio_opt_extended_headers", nbd_internal_py_aio_opt_extended_headers, METH_VARARGS, NULL }, { "aio_opt_structured_reply", nbd_internal_py_aio_opt_structured_reply, METH_VARARGS, NULL }, { "aio_opt_list", nbd_internal_py_aio_opt_list, METH_VARARGS, NULL }, { "aio_opt_info", nbd_internal_py_aio_opt_info, METH_VARARGS, NULL }, { "aio_opt_list_meta_context", nbd_internal_py_aio_opt_list_meta_context, METH_VARARGS, NULL }, { "aio_opt_list_meta_context_queries", nbd_internal_py_aio_opt_list_meta_context_queries, METH_VARARGS, NULL }, { "aio_opt_set_meta_context", nbd_internal_py_aio_opt_set_meta_context, METH_VARARGS, NULL }, { "aio_opt_set_meta_context_queries", nbd_internal_py_aio_opt_set_meta_context_queries, METH_VARARGS, NULL }, { "aio_pread", nbd_internal_py_aio_pread, METH_VARARGS, NULL }, { "aio_pread_structured", nbd_internal_py_aio_pread_structured, METH_VARARGS, NULL }, { "aio_pwrite", nbd_internal_py_aio_pwrite, METH_VARARGS, NULL }, { "aio_disconnect", nbd_internal_py_aio_disconnect, METH_VARARGS, NULL }, { "aio_flush", nbd_internal_py_aio_flush, METH_VARARGS, NULL }, { "aio_trim", nbd_internal_py_aio_trim, METH_VARARGS, NULL }, { "aio_cache", nbd_internal_py_aio_cache, METH_VARARGS, NULL }, { "aio_zero", nbd_internal_py_aio_zero, METH_VARARGS, NULL }, { "aio_block_status", nbd_internal_py_aio_block_status, METH_VARARGS, NULL }, { "aio_block_status_64", nbd_internal_py_aio_block_status_64, METH_VARARGS, NULL }, { "aio_block_status_filter", nbd_internal_py_aio_block_status_filter, METH_VARARGS, NULL }, { "aio_get_fd", nbd_internal_py_aio_get_fd, METH_VARARGS, NULL }, { "aio_get_direction", nbd_internal_py_aio_get_direction, METH_VARARGS, NULL }, { "aio_notify_read", nbd_internal_py_aio_notify_read, METH_VARARGS, NULL }, { "aio_notify_write", nbd_internal_py_aio_notify_write, METH_VARARGS, NULL }, { "aio_is_created", nbd_internal_py_aio_is_created, METH_VARARGS, NULL }, { "aio_is_connecting", nbd_internal_py_aio_is_connecting, METH_VARARGS, NULL }, { "aio_is_negotiating", nbd_internal_py_aio_is_negotiating, METH_VARARGS, NULL }, { "aio_is_ready", nbd_internal_py_aio_is_ready, METH_VARARGS, NULL }, { "aio_is_processing", nbd_internal_py_aio_is_processing, METH_VARARGS, NULL }, { "aio_is_dead", nbd_internal_py_aio_is_dead, METH_VARARGS, NULL }, { "aio_is_closed", nbd_internal_py_aio_is_closed, METH_VARARGS, NULL }, { "aio_command_completed", nbd_internal_py_aio_command_completed, METH_VARARGS, NULL }, { "aio_peek_command_completed", nbd_internal_py_aio_peek_command_completed, METH_VARARGS, NULL }, { "aio_in_flight", nbd_internal_py_aio_in_flight, METH_VARARGS, NULL }, { "connection_state", nbd_internal_py_connection_state, METH_VARARGS, NULL }, { "get_package_name", nbd_internal_py_get_package_name, METH_VARARGS, NULL }, { "get_version", nbd_internal_py_get_version, METH_VARARGS, NULL }, { "kill_subprocess", nbd_internal_py_kill_subprocess, METH_VARARGS, NULL }, { "supports_tls", nbd_internal_py_supports_tls, METH_VARARGS, NULL }, { "supports_vsock", nbd_internal_py_supports_vsock, METH_VARARGS, NULL }, { "supports_uri", nbd_internal_py_supports_uri, METH_VARARGS, NULL }, { "get_uri", nbd_internal_py_get_uri, METH_VARARGS, NULL }, { NULL, NULL, 0, NULL } }; static struct PyModuleDef moduledef = { PyModuleDef_HEAD_INIT, "libnbdmod", /* m_name */ "libnbd module", /* m_doc */ -1, /* m_size */ methods, /* m_methods */ NULL, /* m_reload */ NULL, /* m_traverse */ NULL, /* m_clear */ NULL, /* m_free */ }; /* nbd.Error exception. */ PyObject *nbd_internal_py_Error; extern PyMODINIT_FUNC PyInit_libnbdmod (void); PyMODINIT_FUNC PyInit_libnbdmod (void) { PyObject *mod; mod = PyModule_Create (&moduledef); if (mod == NULL) return NULL; nbd_internal_py_Error = PyErr_NewException ("nbd.Error", NULL, NULL); if (PyModule_AddObject (mod, "Error", nbd_internal_py_Error) < 0) { Py_XDECREF (nbd_internal_py_Error); Py_DECREF (mod); return NULL; } return mod; } libnbd-1.20.3/python/methods.c0000444000175000017500000040127514603303744011653 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #define PY_SSIZE_T_CLEAN 1 #include #include #include #include #include #include #include /* This is passed to *_wrapper as the user_data pointer * and freed in the free_user_data function below. */ struct user_data { PyObject *fn; /* Optional pointer to Python function. */ PyObject *view; /* Optional PyMemoryView of persistent buffer. */ }; static struct user_data * alloc_user_data (void) { struct user_data *data = calloc (1, sizeof *data); if (data == NULL) { PyErr_NoMemory (); return NULL; } return data; } static void free_user_data (void *user_data) { struct user_data *data = user_data; if (data) { PyGILState_STATE py_save = PyGILState_Ensure (); Py_XDECREF (data->fn); Py_XDECREF (data->view); PyGILState_Release (py_save); free (data); } } /* Wrapper for chunk callback. */ static int chunk_wrapper (void *user_data, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error) { const struct user_data *data = user_data; int ret = -1; PyGILState_STATE py_save = PyGILState_Ensure (); PyObject *py_args, *py_ret; PyObject *py_subbuf = NULL; PyObject *py_error = NULL; py_subbuf = nbd_internal_py_get_subview (data->view, subbuf, count); if (!py_subbuf) { PyErr_PrintEx (0); goto out; } py_error = nbd_internal_py_wrap_errptr (*error); if (!py_error) { PyErr_PrintEx (0); goto out; } py_args = Py_BuildValue ("(OKIO)", py_subbuf, offset, status, py_error); if (!py_args) { PyErr_PrintEx (0); goto out; } py_ret = PyObject_CallObject (data->fn, py_args); Py_DECREF (py_args); if (py_ret != NULL) { if (PyLong_Check (py_ret)) ret = PyLong_AsLong (py_ret); else /* If it's not a long, just assume it's 0. */ ret = 0; Py_DECREF (py_ret); } else { /* Special case failed assertions to be fatal. */ if (PyErr_ExceptionMatches (PyExc_AssertionError)) { PyErr_Print (); abort (); } PyErr_PrintEx (0); /* print exception */ }; out: Py_XDECREF (py_subbuf); if (py_error) { PyObject *py_error_ret = PyObject_GetAttrString (py_error, "value"); *error = PyLong_AsLong (py_error_ret); Py_DECREF (py_error_ret); Py_DECREF (py_error); } PyGILState_Release (py_save); return ret; } /* Wrapper for completion callback. */ static int completion_wrapper (void *user_data, int *error) { const struct user_data *data = user_data; int ret = -1; PyGILState_STATE py_save = PyGILState_Ensure (); PyObject *py_args, *py_ret; PyObject *py_error = NULL; py_error = nbd_internal_py_wrap_errptr (*error); if (!py_error) { PyErr_PrintEx (0); goto out; } py_args = Py_BuildValue ("(O)", py_error); if (!py_args) { PyErr_PrintEx (0); goto out; } py_ret = PyObject_CallObject (data->fn, py_args); Py_DECREF (py_args); if (py_ret != NULL) { if (PyLong_Check (py_ret)) ret = PyLong_AsLong (py_ret); else /* If it's not a long, just assume it's 0. */ ret = 0; Py_DECREF (py_ret); } else { /* Special case failed assertions to be fatal. */ if (PyErr_ExceptionMatches (PyExc_AssertionError)) { PyErr_Print (); abort (); } PyErr_PrintEx (0); /* print exception */ }; out: if (py_error) { PyObject *py_error_ret = PyObject_GetAttrString (py_error, "value"); *error = PyLong_AsLong (py_error_ret); Py_DECREF (py_error_ret); Py_DECREF (py_error); } PyGILState_Release (py_save); return ret; } /* Wrapper for debug callback. */ static int debug_wrapper (void *user_data, const char *context, const char *msg) { const struct user_data *data = user_data; int ret = -1; PyGILState_STATE py_save = PyGILState_Ensure (); PyObject *py_args, *py_ret; py_args = Py_BuildValue ("(ss)", context, msg); if (!py_args) { PyErr_PrintEx (0); goto out; } py_ret = PyObject_CallObject (data->fn, py_args); Py_DECREF (py_args); if (py_ret != NULL) { if (PyLong_Check (py_ret)) ret = PyLong_AsLong (py_ret); else /* If it's not a long, just assume it's 0. */ ret = 0; Py_DECREF (py_ret); } else { /* Special case failed assertions to be fatal. */ if (PyErr_ExceptionMatches (PyExc_AssertionError)) { PyErr_Print (); abort (); } PyErr_PrintEx (0); /* print exception */ }; out: PyGILState_Release (py_save); return ret; } /* Wrapper for extent callback. */ static int extent_wrapper (void *user_data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error) { const struct user_data *data = user_data; int ret = -1; PyGILState_STATE py_save = PyGILState_Ensure (); PyObject *py_args, *py_ret; PyObject *py_entries = NULL; PyObject *py_error = NULL; py_entries = PyList_New (nr_entries); if (!py_entries) { PyErr_PrintEx (0); goto out; } size_t i_entries; for (i_entries = 0; i_entries < nr_entries; ++i_entries) { PyObject *py_e_entries = PyLong_FromUnsignedLong (entries[i_entries]); if (!py_e_entries) { PyErr_PrintEx (0); goto out; } PyList_SET_ITEM (py_entries, i_entries, py_e_entries); } py_error = nbd_internal_py_wrap_errptr (*error); if (!py_error) { PyErr_PrintEx (0); goto out; } py_args = Py_BuildValue ("(sKOO)", metacontext, offset, py_entries, py_error); if (!py_args) { PyErr_PrintEx (0); goto out; } py_ret = PyObject_CallObject (data->fn, py_args); Py_DECREF (py_args); if (py_ret != NULL) { if (PyLong_Check (py_ret)) ret = PyLong_AsLong (py_ret); else /* If it's not a long, just assume it's 0. */ ret = 0; Py_DECREF (py_ret); } else { /* Special case failed assertions to be fatal. */ if (PyErr_ExceptionMatches (PyExc_AssertionError)) { PyErr_Print (); abort (); } PyErr_PrintEx (0); /* print exception */ }; out: Py_XDECREF (py_entries); if (py_error) { PyObject *py_error_ret = PyObject_GetAttrString (py_error, "value"); *error = PyLong_AsLong (py_error_ret); Py_DECREF (py_error_ret); Py_DECREF (py_error); } PyGILState_Release (py_save); return ret; } /* Wrapper for extent64 callback. */ static int extent64_wrapper (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { const struct user_data *data = user_data; int ret = -1; PyGILState_STATE py_save = PyGILState_Ensure (); PyObject *py_args, *py_ret; PyObject *py_entries = NULL; PyObject *py_error = NULL; py_entries = PyList_New (nr_entries); if (!py_entries) { PyErr_PrintEx (0); goto out; } size_t i_entries; for (i_entries = 0; i_entries < nr_entries; ++i_entries) { PyObject *py_e_entries = Py_BuildValue ("KK", entries[i_entries].length, entries[i_entries].flags); if (!py_e_entries) { PyErr_PrintEx (0); goto out; } PyList_SET_ITEM (py_entries, i_entries, py_e_entries); } py_error = nbd_internal_py_wrap_errptr (*error); if (!py_error) { PyErr_PrintEx (0); goto out; } py_args = Py_BuildValue ("(sKOO)", metacontext, offset, py_entries, py_error); if (!py_args) { PyErr_PrintEx (0); goto out; } py_ret = PyObject_CallObject (data->fn, py_args); Py_DECREF (py_args); if (py_ret != NULL) { if (PyLong_Check (py_ret)) ret = PyLong_AsLong (py_ret); else /* If it's not a long, just assume it's 0. */ ret = 0; Py_DECREF (py_ret); } else { /* Special case failed assertions to be fatal. */ if (PyErr_ExceptionMatches (PyExc_AssertionError)) { PyErr_Print (); abort (); } PyErr_PrintEx (0); /* print exception */ }; out: Py_XDECREF (py_entries); if (py_error) { PyObject *py_error_ret = PyObject_GetAttrString (py_error, "value"); *error = PyLong_AsLong (py_error_ret); Py_DECREF (py_error_ret); Py_DECREF (py_error); } PyGILState_Release (py_save); return ret; } /* Wrapper for list callback. */ static int list_wrapper (void *user_data, const char *name, const char *description) { const struct user_data *data = user_data; int ret = -1; PyGILState_STATE py_save = PyGILState_Ensure (); PyObject *py_args, *py_ret; py_args = Py_BuildValue ("(ss)", name, description); if (!py_args) { PyErr_PrintEx (0); goto out; } py_ret = PyObject_CallObject (data->fn, py_args); Py_DECREF (py_args); if (py_ret != NULL) { if (PyLong_Check (py_ret)) ret = PyLong_AsLong (py_ret); else /* If it's not a long, just assume it's 0. */ ret = 0; Py_DECREF (py_ret); } else { /* Special case failed assertions to be fatal. */ if (PyErr_ExceptionMatches (PyExc_AssertionError)) { PyErr_Print (); abort (); } PyErr_PrintEx (0); /* print exception */ }; out: PyGILState_Release (py_save); return ret; } /* Wrapper for context callback. */ static int context_wrapper (void *user_data, const char *name) { const struct user_data *data = user_data; int ret = -1; PyGILState_STATE py_save = PyGILState_Ensure (); PyObject *py_args, *py_ret; py_args = Py_BuildValue ("(s)", name); if (!py_args) { PyErr_PrintEx (0); goto out; } py_ret = PyObject_CallObject (data->fn, py_args); Py_DECREF (py_args); if (py_ret != NULL) { if (PyLong_Check (py_ret)) ret = PyLong_AsLong (py_ret); else /* If it's not a long, just assume it's 0. */ ret = 0; Py_DECREF (py_ret); } else { /* Special case failed assertions to be fatal. */ if (PyErr_ExceptionMatches (PyExc_AssertionError)) { PyErr_Print (); abort (); } PyErr_PrintEx (0); /* print exception */ }; out: PyGILState_Release (py_save); return ret; } PyObject * nbd_internal_py_set_debug (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int debug; if (!PyArg_ParseTuple (args, "Op:nbd_set_debug", &py_h, &debug)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_debug (h, debug); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_debug (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_debug", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_debug (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_debug_callback (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *debug_user_data = NULL; PyObject *py_debug_fn; nbd_debug_callback debug = { .callback = debug_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OO:nbd_set_debug_callback", &py_h, &py_debug_fn)) goto out; h = get_handle (py_h); if (!h) goto out; debug.user_data = debug_user_data = alloc_user_data (); if (debug_user_data == NULL) goto out; if (!PyCallable_Check (py_debug_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter debug is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_debug_fn); debug_user_data->fn = py_debug_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_debug_callback (h, debug); Py_END_ALLOW_THREADS; debug_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: free_user_data (debug_user_data); return py_ret; } PyObject * nbd_internal_py_clear_debug_callback (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_clear_debug_callback", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_clear_debug_callback (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_stats_bytes_sent (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; uint64_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_stats_bytes_sent", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_stats_bytes_sent (h); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLongLong (ret); out: return py_ret; } PyObject * nbd_internal_py_stats_chunks_sent (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; uint64_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_stats_chunks_sent", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_stats_chunks_sent (h); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLongLong (ret); out: return py_ret; } PyObject * nbd_internal_py_stats_bytes_received (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; uint64_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_stats_bytes_received", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_stats_bytes_received (h); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLongLong (ret); out: return py_ret; } PyObject * nbd_internal_py_stats_chunks_received (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; uint64_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_stats_chunks_received", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_stats_chunks_received (h); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLongLong (ret); out: return py_ret; } PyObject * nbd_internal_py_set_handle_name (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *handle_name; if (!PyArg_ParseTuple (args, "Os:nbd_set_handle_name", &py_h, &handle_name)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_handle_name (h, handle_name); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_handle_name (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_handle_name", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_handle_name (h); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); free (ret); out: return py_ret; } PyObject * nbd_internal_py_set_private_data (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; uintptr_t ret; PyObject *py_ret = NULL; unsigned int private_data; if (!PyArg_ParseTuple (args, "OI:nbd_set_private_data", &py_h, &private_data)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_private_data (h, private_data); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_get_private_data (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; uintptr_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_private_data", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_private_data (h); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_set_export_name (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *export_name; if (!PyArg_ParseTuple (args, "Os:nbd_set_export_name", &py_h, &export_name)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_export_name (h, export_name); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_export_name (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_export_name", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_export_name (h); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); free (ret); out: return py_ret; } PyObject * nbd_internal_py_set_request_block_size (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int request; if (!PyArg_ParseTuple (args, "Op:nbd_set_request_block_size", &py_h, &request)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_request_block_size (h, request); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_request_block_size (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_request_block_size", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_request_block_size (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_full_info (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int request; if (!PyArg_ParseTuple (args, "Op:nbd_set_full_info", &py_h, &request)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_full_info (h, request); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_full_info (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_full_info", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_full_info (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_canonical_export_name (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_canonical_export_name", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_canonical_export_name (h); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); free (ret); out: return py_ret; } PyObject * nbd_internal_py_get_export_description (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_export_description", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_export_description (h); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); free (ret); out: return py_ret; } PyObject * nbd_internal_py_set_tls (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int tls; if (!PyArg_ParseTuple (args, "Oi:nbd_set_tls", &py_h, &tls)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_tls (h, tls); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_tls (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_tls", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_tls (h); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_get_tls_negotiated (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_tls_negotiated", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_tls_negotiated (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_tls_certificates (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_dir = NULL; char *dir = NULL; if (!PyArg_ParseTuple (args, "OO&:nbd_set_tls_certificates", &py_h, PyUnicode_FSConverter, &py_dir)) goto out; h = get_handle (py_h); if (!h) goto out; dir = PyBytes_AS_STRING (py_dir); assert (dir != NULL); Py_BEGIN_ALLOW_THREADS; ret = nbd_set_tls_certificates (h, dir); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: Py_XDECREF (py_dir); return py_ret; } PyObject * nbd_internal_py_set_tls_verify_peer (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int verify; if (!PyArg_ParseTuple (args, "Op:nbd_set_tls_verify_peer", &py_h, &verify)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_tls_verify_peer (h, verify); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_tls_verify_peer (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_tls_verify_peer", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_tls_verify_peer (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_tls_username (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *username; if (!PyArg_ParseTuple (args, "Os:nbd_set_tls_username", &py_h, &username)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_tls_username (h, username); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_tls_username (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_tls_username", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_tls_username (h); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); free (ret); out: return py_ret; } PyObject * nbd_internal_py_set_tls_psk_file (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_filename = NULL; char *filename = NULL; if (!PyArg_ParseTuple (args, "OO&:nbd_set_tls_psk_file", &py_h, PyUnicode_FSConverter, &py_filename)) goto out; h = get_handle (py_h); if (!h) goto out; filename = PyBytes_AS_STRING (py_filename); assert (filename != NULL); Py_BEGIN_ALLOW_THREADS; ret = nbd_set_tls_psk_file (h, filename); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: Py_XDECREF (py_filename); return py_ret; } PyObject * nbd_internal_py_set_request_extended_headers (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int request; if (!PyArg_ParseTuple (args, "Op:nbd_set_request_extended_headers", &py_h, &request)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_request_extended_headers (h, request); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_request_extended_headers (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_request_extended_headers", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_request_extended_headers (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_extended_headers_negotiated (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_extended_headers_negotiated", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_extended_headers_negotiated (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_request_structured_replies (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int request; if (!PyArg_ParseTuple (args, "Op:nbd_set_request_structured_replies", &py_h, &request)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_request_structured_replies (h, request); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_request_structured_replies (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_request_structured_replies", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_request_structured_replies (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_structured_replies_negotiated (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_structured_replies_negotiated", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_structured_replies_negotiated (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_request_meta_context (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int request; if (!PyArg_ParseTuple (args, "Op:nbd_set_request_meta_context", &py_h, &request)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_request_meta_context (h, request); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_request_meta_context (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_request_meta_context", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_request_meta_context (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_handshake_flags (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OI:nbd_set_handshake_flags", &py_h, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_handshake_flags (h, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_handshake_flags (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; uint32_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_handshake_flags", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_handshake_flags (h); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_set_pread_initialize (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int request; if (!PyArg_ParseTuple (args, "Op:nbd_set_pread_initialize", &py_h, &request)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_pread_initialize (h, request); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_pread_initialize (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_pread_initialize", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_pread_initialize (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_strict_mode (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OI:nbd_set_strict_mode", &py_h, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_strict_mode (h, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_strict_mode (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; uint32_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_strict_mode", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_strict_mode (h); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_set_opt_mode (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int enable; if (!PyArg_ParseTuple (args, "Op:nbd_set_opt_mode", &py_h, &enable)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_opt_mode (h, enable); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_opt_mode (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_opt_mode", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_opt_mode (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_opt_go (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_opt_go", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_go (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_opt_abort (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_opt_abort", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_abort (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_opt_starttls (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_opt_starttls", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_starttls (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_opt_extended_headers (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_opt_extended_headers", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_extended_headers (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_opt_structured_reply (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_opt_structured_reply", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_structured_reply (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_opt_list (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *list_user_data = NULL; PyObject *py_list_fn; nbd_list_callback list = { .callback = list_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OO:nbd_opt_list", &py_h, &py_list_fn)) goto out; h = get_handle (py_h); if (!h) goto out; list.user_data = list_user_data = alloc_user_data (); if (list_user_data == NULL) goto out; if (!PyCallable_Check (py_list_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter list is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_list_fn); list_user_data->fn = py_list_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_list (h, list); Py_END_ALLOW_THREADS; list_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: free_user_data (list_user_data); return py_ret; } PyObject * nbd_internal_py_opt_info (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_opt_info", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_info (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_opt_list_meta_context (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *context_user_data = NULL; PyObject *py_context_fn; nbd_context_callback context = { .callback = context_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OO:nbd_opt_list_meta_context", &py_h, &py_context_fn)) goto out; h = get_handle (py_h); if (!h) goto out; context.user_data = context_user_data = alloc_user_data (); if (context_user_data == NULL) goto out; if (!PyCallable_Check (py_context_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter context is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_context_fn); context_user_data->fn = py_context_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_list_meta_context (h, context); Py_END_ALLOW_THREADS; context_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: free_user_data (context_user_data); return py_ret; } PyObject * nbd_internal_py_opt_list_meta_context_queries (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_queries; char **queries = NULL; struct user_data *context_user_data = NULL; PyObject *py_context_fn; nbd_context_callback context = { .callback = context_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OOO:nbd_opt_list_meta_context_queries", &py_h, &py_queries, &py_context_fn)) goto out; h = get_handle (py_h); if (!h) goto out; queries = nbd_internal_py_get_string_list (py_queries); if (!queries) goto out; context.user_data = context_user_data = alloc_user_data (); if (context_user_data == NULL) goto out; if (!PyCallable_Check (py_context_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter context is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_context_fn); context_user_data->fn = py_context_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_list_meta_context_queries (h, queries, context); Py_END_ALLOW_THREADS; context_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: nbd_internal_py_free_string_list (queries); free_user_data (context_user_data); return py_ret; } PyObject * nbd_internal_py_opt_set_meta_context (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *context_user_data = NULL; PyObject *py_context_fn; nbd_context_callback context = { .callback = context_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OO:nbd_opt_set_meta_context", &py_h, &py_context_fn)) goto out; h = get_handle (py_h); if (!h) goto out; context.user_data = context_user_data = alloc_user_data (); if (context_user_data == NULL) goto out; if (!PyCallable_Check (py_context_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter context is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_context_fn); context_user_data->fn = py_context_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_set_meta_context (h, context); Py_END_ALLOW_THREADS; context_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: free_user_data (context_user_data); return py_ret; } PyObject * nbd_internal_py_opt_set_meta_context_queries (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_queries; char **queries = NULL; struct user_data *context_user_data = NULL; PyObject *py_context_fn; nbd_context_callback context = { .callback = context_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OOO:nbd_opt_set_meta_context_queries", &py_h, &py_queries, &py_context_fn)) goto out; h = get_handle (py_h); if (!h) goto out; queries = nbd_internal_py_get_string_list (py_queries); if (!queries) goto out; context.user_data = context_user_data = alloc_user_data (); if (context_user_data == NULL) goto out; if (!PyCallable_Check (py_context_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter context is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_context_fn); context_user_data->fn = py_context_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_opt_set_meta_context_queries (h, queries, context); Py_END_ALLOW_THREADS; context_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: nbd_internal_py_free_string_list (queries); free_user_data (context_user_data); return py_ret; } PyObject * nbd_internal_py_add_meta_context (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *name; if (!PyArg_ParseTuple (args, "Os:nbd_add_meta_context", &py_h, &name)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_add_meta_context (h, name); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_nr_meta_contexts (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; ssize_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_nr_meta_contexts", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_nr_meta_contexts (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_get_meta_context (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; char * ret; PyObject *py_ret = NULL; Py_ssize_t i; if (!PyArg_ParseTuple (args, "On:nbd_get_meta_context", &py_h, &i)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_meta_context (h, (size_t)i); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); free (ret); out: return py_ret; } PyObject * nbd_internal_py_clear_meta_contexts (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_clear_meta_contexts", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_clear_meta_contexts (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_uri_allow_transports (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint32_t mask_u32; unsigned int mask; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OI:nbd_set_uri_allow_transports", &py_h, &mask)) goto out; h = get_handle (py_h); if (!h) goto out; mask_u32 = mask; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_uri_allow_transports (h, mask_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_uri_allow_tls (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int tls; if (!PyArg_ParseTuple (args, "Oi:nbd_set_uri_allow_tls", &py_h, &tls)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_uri_allow_tls (h, tls); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_set_uri_allow_local_file (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int allow; if (!PyArg_ParseTuple (args, "Op:nbd_set_uri_allow_local_file", &py_h, &allow)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_uri_allow_local_file (h, allow); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_connect_uri (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *uri; if (!PyArg_ParseTuple (args, "Os:nbd_connect_uri", &py_h, &uri)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_connect_uri (h, uri); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_connect_unix (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_unixsocket = NULL; char *unixsocket = NULL; if (!PyArg_ParseTuple (args, "OO&:nbd_connect_unix", &py_h, PyUnicode_FSConverter, &py_unixsocket)) goto out; h = get_handle (py_h); if (!h) goto out; unixsocket = PyBytes_AS_STRING (py_unixsocket); assert (unixsocket != NULL); Py_BEGIN_ALLOW_THREADS; ret = nbd_connect_unix (h, unixsocket); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: Py_XDECREF (py_unixsocket); return py_ret; } PyObject * nbd_internal_py_connect_vsock (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint32_t cid_u32; unsigned int cid; /* really uint32_t */ uint32_t port_u32; unsigned int port; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OII:nbd_connect_vsock", &py_h, &cid, &port)) goto out; h = get_handle (py_h); if (!h) goto out; cid_u32 = cid; port_u32 = port; Py_BEGIN_ALLOW_THREADS; ret = nbd_connect_vsock (h, cid_u32, port_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_connect_tcp (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *hostname; const char *port; if (!PyArg_ParseTuple (args, "Oss:nbd_connect_tcp", &py_h, &hostname, &port)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_connect_tcp (h, hostname, port); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_connect_socket (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int sock; if (!PyArg_ParseTuple (args, "Oi:nbd_connect_socket", &py_h, &sock)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_connect_socket (h, sock); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_connect_command (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_argv; char **argv = NULL; if (!PyArg_ParseTuple (args, "OO:nbd_connect_command", &py_h, &py_argv)) goto out; h = get_handle (py_h); if (!h) goto out; argv = nbd_internal_py_get_string_list (py_argv); if (!argv) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_connect_command (h, argv); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: nbd_internal_py_free_string_list (argv); return py_ret; } PyObject * nbd_internal_py_connect_systemd_socket_activation (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_argv; char **argv = NULL; if (!PyArg_ParseTuple (args, "OO:nbd_connect_systemd_socket_activation", &py_h, &py_argv)) goto out; h = get_handle (py_h); if (!h) goto out; argv = nbd_internal_py_get_string_list (py_argv); if (!argv) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_connect_systemd_socket_activation (h, argv); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: nbd_internal_py_free_string_list (argv); return py_ret; } PyObject * nbd_internal_py_set_socket_activation_name (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *socket_name; if (!PyArg_ParseTuple (args, "Os:nbd_set_socket_activation_name", &py_h, &socket_name)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_set_socket_activation_name (h, socket_name); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_socket_activation_name (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_socket_activation_name", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_socket_activation_name (h); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); free (ret); out: return py_ret; } PyObject * nbd_internal_py_is_read_only (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_is_read_only", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_is_read_only (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_flush (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_can_flush", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_flush (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_fua (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_can_fua", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_fua (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_is_rotational (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_is_rotational", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_is_rotational (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_trim (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_can_trim", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_trim (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_zero (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_can_zero", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_zero (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_fast_zero (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_can_fast_zero", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_fast_zero (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_block_status_payload (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_can_block_status_payload", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_block_status_payload (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_df (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_can_df", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_df (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_multi_conn (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_can_multi_conn", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_multi_conn (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_cache (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_can_cache", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_cache (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_can_meta_context (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *metacontext; if (!PyArg_ParseTuple (args, "Os:nbd_can_meta_context", &py_h, &metacontext)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_can_meta_context (h, metacontext); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_protocol (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; const char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_protocol", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_protocol (h); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); out: return py_ret; } PyObject * nbd_internal_py_get_size (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_size", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_size (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: return py_ret; } PyObject * nbd_internal_py_get_block_size (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; int size_type; if (!PyArg_ParseTuple (args, "Oi:nbd_get_block_size", &py_h, &size_type)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_block_size (h, size_type); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: return py_ret; } PyObject * nbd_internal_py_pread (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *buf = NULL; Py_ssize_t count; uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OnKI:nbd_pread", &py_h, &count, &offset, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; buf = PyByteArray_FromStringAndSize (NULL, count); if (buf == NULL) goto out; offset_u64 = offset; Py_BEGIN_ALLOW_THREADS; ret = nbd_pread (h, PyByteArray_AS_STRING (buf), count, offset_u64, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = buf; buf = NULL; out: Py_XDECREF (buf); return py_ret; } PyObject * nbd_internal_py_pread_structured (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *buf = NULL; Py_ssize_t count; uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *chunk_user_data = NULL; PyObject *py_chunk_fn; nbd_chunk_callback chunk = { .callback = chunk_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OnKOI:nbd_pread_structured", &py_h, &count, &offset, &py_chunk_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; buf = PyByteArray_FromStringAndSize (NULL, count); if (buf == NULL) goto out; offset_u64 = offset; chunk.user_data = chunk_user_data = alloc_user_data (); if (chunk_user_data == NULL) goto out; if (!PyCallable_Check (py_chunk_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter chunk is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_chunk_fn); chunk_user_data->fn = py_chunk_fn; chunk_user_data->view = nbd_internal_py_get_aio_view (buf, PyBUF_WRITE); if (!chunk_user_data->view) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_pread_structured (h, PyByteArray_AS_STRING (buf), count, offset_u64, chunk, flags_u32); Py_END_ALLOW_THREADS; chunk_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = buf; buf = NULL; out: Py_XDECREF (buf); free_user_data (chunk_user_data); return py_ret; } PyObject * nbd_internal_py_pwrite (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; Py_buffer buf = { .obj = NULL }; uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "Oy*KI:nbd_pwrite", &py_h, &buf, &offset, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; offset_u64 = offset; Py_BEGIN_ALLOW_THREADS; ret = nbd_pwrite (h, buf.buf, buf.len, offset_u64, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: if (buf.obj) PyBuffer_Release (&buf); return py_ret; } PyObject * nbd_internal_py_shutdown (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OI:nbd_shutdown", &py_h, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; Py_BEGIN_ALLOW_THREADS; ret = nbd_shutdown (h, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_flush (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OI:nbd_flush", &py_h, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; Py_BEGIN_ALLOW_THREADS; ret = nbd_flush (h, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_trim (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKI:nbd_trim", &py_h, &count, &offset, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; count_u64 = count; offset_u64 = offset; Py_BEGIN_ALLOW_THREADS; ret = nbd_trim (h, count_u64, offset_u64, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_cache (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKI:nbd_cache", &py_h, &count, &offset, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; count_u64 = count; offset_u64 = offset; Py_BEGIN_ALLOW_THREADS; ret = nbd_cache (h, count_u64, offset_u64, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_zero (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKI:nbd_zero", &py_h, &count, &offset, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; count_u64 = count; offset_u64 = offset; Py_BEGIN_ALLOW_THREADS; ret = nbd_zero (h, count_u64, offset_u64, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_block_status (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *extent_user_data = NULL; PyObject *py_extent_fn; nbd_extent_callback extent = { .callback = extent_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKOI:nbd_block_status", &py_h, &count, &offset, &py_extent_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; count_u64 = count; offset_u64 = offset; extent.user_data = extent_user_data = alloc_user_data (); if (extent_user_data == NULL) goto out; if (!PyCallable_Check (py_extent_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter extent is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_extent_fn); extent_user_data->fn = py_extent_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_block_status (h, count_u64, offset_u64, extent, flags_u32); Py_END_ALLOW_THREADS; extent_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: free_user_data (extent_user_data); return py_ret; } PyObject * nbd_internal_py_block_status_64 (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *extent64_user_data = NULL; PyObject *py_extent64_fn; nbd_extent64_callback extent64 = { .callback = extent64_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKOI:nbd_block_status_64", &py_h, &count, &offset, &py_extent64_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; count_u64 = count; offset_u64 = offset; extent64.user_data = extent64_user_data = alloc_user_data (); if (extent64_user_data == NULL) goto out; if (!PyCallable_Check (py_extent64_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter extent64 is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_extent64_fn); extent64_user_data->fn = py_extent64_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_block_status_64 (h, count_u64, offset_u64, extent64, flags_u32); Py_END_ALLOW_THREADS; extent64_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: free_user_data (extent64_user_data); return py_ret; } PyObject * nbd_internal_py_block_status_filter (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ PyObject *py_contexts; char **contexts = NULL; struct user_data *extent64_user_data = NULL; PyObject *py_extent64_fn; nbd_extent64_callback extent64 = { .callback = extent64_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKOOI:nbd_block_status_filter", &py_h, &count, &offset, &py_contexts, &py_extent64_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; count_u64 = count; offset_u64 = offset; contexts = nbd_internal_py_get_string_list (py_contexts); if (!contexts) goto out; extent64.user_data = extent64_user_data = alloc_user_data (); if (extent64_user_data == NULL) goto out; if (!PyCallable_Check (py_extent64_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter extent64 is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_extent64_fn); extent64_user_data->fn = py_extent64_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_block_status_filter (h, count_u64, offset_u64, contexts, extent64, flags_u32); Py_END_ALLOW_THREADS; extent64_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: nbd_internal_py_free_string_list (contexts); free_user_data (extent64_user_data); return py_ret; } PyObject * nbd_internal_py_poll (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int timeout; if (!PyArg_ParseTuple (args, "Oi:nbd_poll", &py_h, &timeout)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_poll (h, timeout); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_poll2 (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int fd; int timeout; if (!PyArg_ParseTuple (args, "Oii:nbd_poll2", &py_h, &fd, &timeout)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_poll2 (h, fd, timeout); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_aio_connect (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *addr; struct sockaddr_storage addr_sa; socklen_t addr_len; if (!PyArg_ParseTuple (args, "OO:nbd_aio_connect", &py_h, &addr)) goto out; h = get_handle (py_h); if (!h) goto out; if (nbd_internal_py_get_sockaddr (addr, &addr_sa, &addr_len) == -1) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_connect (h, (struct sockaddr *)&addr_sa, addr_len); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_connect_uri (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *uri; if (!PyArg_ParseTuple (args, "Os:nbd_aio_connect_uri", &py_h, &uri)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_connect_uri (h, uri); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_connect_unix (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_unixsocket = NULL; char *unixsocket = NULL; if (!PyArg_ParseTuple (args, "OO&:nbd_aio_connect_unix", &py_h, PyUnicode_FSConverter, &py_unixsocket)) goto out; h = get_handle (py_h); if (!h) goto out; unixsocket = PyBytes_AS_STRING (py_unixsocket); assert (unixsocket != NULL); Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_connect_unix (h, unixsocket); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: Py_XDECREF (py_unixsocket); return py_ret; } PyObject * nbd_internal_py_aio_connect_vsock (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint32_t cid_u32; unsigned int cid; /* really uint32_t */ uint32_t port_u32; unsigned int port; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OII:nbd_aio_connect_vsock", &py_h, &cid, &port)) goto out; h = get_handle (py_h); if (!h) goto out; cid_u32 = cid; port_u32 = port; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_connect_vsock (h, cid_u32, port_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_connect_tcp (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; const char *hostname; const char *port; if (!PyArg_ParseTuple (args, "Oss:nbd_aio_connect_tcp", &py_h, &hostname, &port)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_connect_tcp (h, hostname, port); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_connect_socket (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int sock; if (!PyArg_ParseTuple (args, "Oi:nbd_aio_connect_socket", &py_h, &sock)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_connect_socket (h, sock); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_connect_command (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_argv; char **argv = NULL; if (!PyArg_ParseTuple (args, "OO:nbd_aio_connect_command", &py_h, &py_argv)) goto out; h = get_handle (py_h); if (!h) goto out; argv = nbd_internal_py_get_string_list (py_argv); if (!argv) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_connect_command (h, argv); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: nbd_internal_py_free_string_list (argv); return py_ret; } PyObject * nbd_internal_py_aio_connect_systemd_socket_activation (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_argv; char **argv = NULL; if (!PyArg_ParseTuple (args, "OO:nbd_aio_connect_systemd_socket_activation", &py_h, &py_argv)) goto out; h = get_handle (py_h); if (!h) goto out; argv = nbd_internal_py_get_string_list (py_argv); if (!argv) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_connect_systemd_socket_activation (h, argv); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: nbd_internal_py_free_string_list (argv); return py_ret; } PyObject * nbd_internal_py_aio_opt_go (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OO:nbd_aio_opt_go", &py_h, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_go (h, completion); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_opt_abort (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_opt_abort", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_abort (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_opt_starttls (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OO:nbd_aio_opt_starttls", &py_h, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_starttls (h, completion); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_opt_extended_headers (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OO:nbd_aio_opt_extended_headers", &py_h, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_extended_headers (h, completion); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_opt_structured_reply (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OO:nbd_aio_opt_structured_reply", &py_h, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_structured_reply (h, completion); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_opt_list (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *list_user_data = NULL; PyObject *py_list_fn; nbd_list_callback list = { .callback = list_wrapper, .free = free_user_data }; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OOO:nbd_aio_opt_list", &py_h, &py_list_fn, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ list.user_data = list_user_data = alloc_user_data (); if (list_user_data == NULL) goto out; if (!PyCallable_Check (py_list_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter list is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_list_fn); list_user_data->fn = py_list_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_list (h, list, completion); Py_END_ALLOW_THREADS; list_user_data = NULL; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: free_user_data (list_user_data); free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_opt_info (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OO:nbd_aio_opt_info", &py_h, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_info (h, completion); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_opt_list_meta_context (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *context_user_data = NULL; PyObject *py_context_fn; nbd_context_callback context = { .callback = context_wrapper, .free = free_user_data }; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OOO:nbd_aio_opt_list_meta_context", &py_h, &py_context_fn, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ context.user_data = context_user_data = alloc_user_data (); if (context_user_data == NULL) goto out; if (!PyCallable_Check (py_context_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter context is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_context_fn); context_user_data->fn = py_context_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_list_meta_context (h, context, completion); Py_END_ALLOW_THREADS; context_user_data = NULL; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: free_user_data (context_user_data); free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_opt_list_meta_context_queries (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_queries; char **queries = NULL; struct user_data *context_user_data = NULL; PyObject *py_context_fn; nbd_context_callback context = { .callback = context_wrapper, .free = free_user_data }; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OOOO:nbd_aio_opt_list_meta_context_queries", &py_h, &py_queries, &py_context_fn, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ queries = nbd_internal_py_get_string_list (py_queries); if (!queries) goto out; context.user_data = context_user_data = alloc_user_data (); if (context_user_data == NULL) goto out; if (!PyCallable_Check (py_context_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter context is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_context_fn); context_user_data->fn = py_context_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_list_meta_context_queries (h, queries, context, completion); Py_END_ALLOW_THREADS; context_user_data = NULL; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: nbd_internal_py_free_string_list (queries); free_user_data (context_user_data); free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_opt_set_meta_context (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; struct user_data *context_user_data = NULL; PyObject *py_context_fn; nbd_context_callback context = { .callback = context_wrapper, .free = free_user_data }; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OOO:nbd_aio_opt_set_meta_context", &py_h, &py_context_fn, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ context.user_data = context_user_data = alloc_user_data (); if (context_user_data == NULL) goto out; if (!PyCallable_Check (py_context_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter context is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_context_fn); context_user_data->fn = py_context_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_set_meta_context (h, context, completion); Py_END_ALLOW_THREADS; context_user_data = NULL; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: free_user_data (context_user_data); free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_opt_set_meta_context_queries (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; PyObject *py_queries; char **queries = NULL; struct user_data *context_user_data = NULL; PyObject *py_context_fn; nbd_context_callback context = { .callback = context_wrapper, .free = free_user_data }; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; if (!PyArg_ParseTuple (args, "OOOO:nbd_aio_opt_set_meta_context_queries", &py_h, &py_queries, &py_context_fn, &py_completion_fn)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ queries = nbd_internal_py_get_string_list (py_queries); if (!queries) goto out; context.user_data = context_user_data = alloc_user_data (); if (context_user_data == NULL) goto out; if (!PyCallable_Check (py_context_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter context is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_context_fn); context_user_data->fn = py_context_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_opt_set_meta_context_queries (h, queries, context, completion); Py_END_ALLOW_THREADS; context_user_data = NULL; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: nbd_internal_py_free_string_list (queries); free_user_data (context_user_data); free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_pread (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; PyObject *buf; /* Buffer-like object or nbd.Buffer */ PyObject *buf_view = NULL; /* PyMemoryView of buf */ Py_buffer *py_buf; /* buffer of buf_view */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OOKOI:nbd_aio_pread", &py_h, &buf, &offset, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; buf_view = nbd_internal_py_get_aio_view (buf, PyBUF_WRITE); if (!buf_view) goto out; py_buf = PyMemoryView_GET_BUFFER (buf_view); completion_user_data->view = buf_view; offset_u64 = offset; if (nbd_internal_py_init_aio_buffer (buf) < 0) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_pread (h, py_buf->buf, py_buf->len, offset_u64, completion, flags_u32); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_pread_structured (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; PyObject *buf; /* Buffer-like object or nbd.Buffer */ PyObject *buf_view = NULL; /* PyMemoryView of buf */ Py_buffer *py_buf; /* buffer of buf_view */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *chunk_user_data = NULL; PyObject *py_chunk_fn; nbd_chunk_callback chunk = { .callback = chunk_wrapper, .free = free_user_data }; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OOKOOI:nbd_aio_pread_structured", &py_h, &buf, &offset, &py_chunk_fn, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; buf_view = nbd_internal_py_get_aio_view (buf, PyBUF_WRITE); if (!buf_view) goto out; py_buf = PyMemoryView_GET_BUFFER (buf_view); completion_user_data->view = buf_view; offset_u64 = offset; chunk.user_data = chunk_user_data = alloc_user_data (); if (chunk_user_data == NULL) goto out; if (!PyCallable_Check (py_chunk_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter chunk is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_chunk_fn); chunk_user_data->fn = py_chunk_fn; chunk_user_data->view = nbd_internal_py_get_aio_view (buf, PyBUF_WRITE); if (!chunk_user_data->view) goto out; if (nbd_internal_py_init_aio_buffer (buf) < 0) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_pread_structured (h, py_buf->buf, py_buf->len, offset_u64, chunk, completion, flags_u32); Py_END_ALLOW_THREADS; chunk_user_data = NULL; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: free_user_data (chunk_user_data); free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_pwrite (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; PyObject *buf; /* Buffer-like object or nbd.Buffer */ PyObject *buf_view = NULL; /* PyMemoryView of buf */ Py_buffer *py_buf; /* buffer of buf_view */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OOKOI:nbd_aio_pwrite", &py_h, &buf, &offset, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; buf_view = nbd_internal_py_get_aio_view (buf, PyBUF_READ); if (!buf_view) goto out; py_buf = PyMemoryView_GET_BUFFER (buf_view); completion_user_data->view = buf_view; offset_u64 = offset; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_pwrite (h, py_buf->buf, py_buf->len, offset_u64, completion, flags_u32); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_disconnect (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OI:nbd_aio_disconnect", &py_h, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; flags_u32 = flags; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_disconnect (h, flags_u32); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_flush (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OOI:nbd_aio_flush", &py_h, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_flush (h, completion, flags_u32); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_trim (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKOI:nbd_aio_trim", &py_h, &count, &offset, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; count_u64 = count; offset_u64 = offset; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_trim (h, count_u64, offset_u64, completion, flags_u32); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_cache (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKOI:nbd_aio_cache", &py_h, &count, &offset, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; count_u64 = count; offset_u64 = offset; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_cache (h, count_u64, offset_u64, completion, flags_u32); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_zero (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKOI:nbd_aio_zero", &py_h, &count, &offset, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; count_u64 = count; offset_u64 = offset; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_zero (h, count_u64, offset_u64, completion, flags_u32); Py_END_ALLOW_THREADS; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_block_status (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *extent_user_data = NULL; PyObject *py_extent_fn; nbd_extent_callback extent = { .callback = extent_wrapper, .free = free_user_data }; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKOOI:nbd_aio_block_status", &py_h, &count, &offset, &py_extent_fn, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; count_u64 = count; offset_u64 = offset; extent.user_data = extent_user_data = alloc_user_data (); if (extent_user_data == NULL) goto out; if (!PyCallable_Check (py_extent_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter extent is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_extent_fn); extent_user_data->fn = py_extent_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_block_status (h, count_u64, offset_u64, extent, completion, flags_u32); Py_END_ALLOW_THREADS; extent_user_data = NULL; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: free_user_data (extent_user_data); free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_block_status_64 (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ struct user_data *extent64_user_data = NULL; PyObject *py_extent64_fn; nbd_extent64_callback extent64 = { .callback = extent64_wrapper, .free = free_user_data }; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKOOI:nbd_aio_block_status_64", &py_h, &count, &offset, &py_extent64_fn, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; count_u64 = count; offset_u64 = offset; extent64.user_data = extent64_user_data = alloc_user_data (); if (extent64_user_data == NULL) goto out; if (!PyCallable_Check (py_extent64_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter extent64 is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_extent64_fn); extent64_user_data->fn = py_extent64_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_block_status_64 (h, count_u64, offset_u64, extent64, completion, flags_u32); Py_END_ALLOW_THREADS; extent64_user_data = NULL; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: free_user_data (extent64_user_data); free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_block_status_filter (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; uint64_t count_u64; unsigned long long count; /* really uint64_t */ uint64_t offset_u64; unsigned long long offset; /* really uint64_t */ PyObject *py_contexts; char **contexts = NULL; struct user_data *extent64_user_data = NULL; PyObject *py_extent64_fn; nbd_extent64_callback extent64 = { .callback = extent64_wrapper, .free = free_user_data }; struct user_data *completion_user_data = NULL; PyObject *py_completion_fn; nbd_completion_callback completion = { .callback = completion_wrapper, .free = free_user_data }; uint32_t flags_u32; unsigned int flags; /* really uint32_t */ if (!PyArg_ParseTuple (args, "OKKOOOI:nbd_aio_block_status_filter", &py_h, &count, &offset, &py_contexts, &py_extent64_fn, &py_completion_fn, &flags)) goto out; h = get_handle (py_h); if (!h) goto out; completion.user_data = completion_user_data = alloc_user_data (); if (completion_user_data == NULL) goto out; if (py_completion_fn != Py_None) { if (!PyCallable_Check (py_completion_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter completion is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_completion_fn); completion_user_data->fn = py_completion_fn; } else completion.callback = NULL; /* we're not going to call it */ flags_u32 = flags; count_u64 = count; offset_u64 = offset; contexts = nbd_internal_py_get_string_list (py_contexts); if (!contexts) goto out; extent64.user_data = extent64_user_data = alloc_user_data (); if (extent64_user_data == NULL) goto out; if (!PyCallable_Check (py_extent64_fn)) { PyErr_SetString (PyExc_TypeError, "callback parameter extent64 is not callable"); goto out; } /* Increment refcount since pointer may be saved by libnbd. */ Py_INCREF (py_extent64_fn); extent64_user_data->fn = py_extent64_fn; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_block_status_filter (h, count_u64, offset_u64, contexts, extent64, completion, flags_u32); Py_END_ALLOW_THREADS; extent64_user_data = NULL; completion_user_data = NULL; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: nbd_internal_py_free_string_list (contexts); free_user_data (extent64_user_data); free_user_data (completion_user_data); return py_ret; } PyObject * nbd_internal_py_aio_get_fd (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_get_fd", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_get_fd (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_aio_get_direction (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; unsigned ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_get_direction", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_get_direction (h); Py_END_ALLOW_THREADS; py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_aio_notify_read (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_notify_read", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_notify_read (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_notify_write (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_notify_write", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_notify_write (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_is_created (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_is_created", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_is_created (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_is_connecting (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_is_connecting", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_is_connecting (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_is_negotiating (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_is_negotiating", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_is_negotiating (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_is_ready (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_is_ready", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_is_ready (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_is_processing (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_is_processing", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_is_processing (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_is_dead (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_is_dead", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_is_dead (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_is_closed (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_is_closed", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_is_closed (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_command_completed (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; uint64_t cookie_u64; unsigned long long cookie; /* really uint64_t */ if (!PyArg_ParseTuple (args, "OK:nbd_aio_command_completed", &py_h, &cookie)) goto out; h = get_handle (py_h); if (!h) goto out; cookie_u64 = cookie; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_command_completed (h, cookie_u64); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_aio_peek_command_completed (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int64_t ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_peek_command_completed", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_peek_command_completed (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLongLong (ret); out: return py_ret; } PyObject * nbd_internal_py_aio_in_flight (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_aio_in_flight", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_aio_in_flight (h); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = PyLong_FromLong (ret); out: return py_ret; } PyObject * nbd_internal_py_connection_state (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; const char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_connection_state", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_connection_state (h); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); out: return py_ret; } PyObject * nbd_internal_py_get_package_name (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; const char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_package_name", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_package_name (h); Py_END_ALLOW_THREADS; py_ret = PyUnicode_FromString (ret); out: return py_ret; } PyObject * nbd_internal_py_get_version (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; const char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_version", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_version (h); Py_END_ALLOW_THREADS; py_ret = PyUnicode_FromString (ret); out: return py_ret; } PyObject * nbd_internal_py_kill_subprocess (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; int signum; if (!PyArg_ParseTuple (args, "Oi:nbd_kill_subprocess", &py_h, &signum)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_kill_subprocess (h, signum); Py_END_ALLOW_THREADS; if (ret == -1) { raise_exception (); goto out; } py_ret = Py_None; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_supports_tls (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_supports_tls", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_supports_tls (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_supports_vsock (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_supports_vsock", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_supports_vsock (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_supports_uri (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; int ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_supports_uri", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_supports_uri (h); Py_END_ALLOW_THREADS; py_ret = ret ? Py_True : Py_False; Py_INCREF (py_ret); out: return py_ret; } PyObject * nbd_internal_py_get_uri (PyObject *self, PyObject *args) { PyObject *py_h; struct nbd_handle *h; char * ret; PyObject *py_ret = NULL; if (!PyArg_ParseTuple (args, "O:nbd_get_uri", &py_h)) goto out; h = get_handle (py_h); if (!h) goto out; Py_BEGIN_ALLOW_THREADS; ret = nbd_get_uri (h); Py_END_ALLOW_THREADS; if (ret == NULL) { raise_exception (); goto out; } py_ret = PyUnicode_FromString (ret); free (ret); out: return py_ret; } libnbd-1.20.3/python/methods.h0000444000175000017500000005130214603303744011650 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_METHODS_H #define LIBNBD_METHODS_H #define PY_SSIZE_T_CLEAN 1 #include #include extern char **nbd_internal_py_get_string_list (PyObject *); extern void nbd_internal_py_free_string_list (char **); extern int nbd_internal_py_get_sockaddr (PyObject *, struct sockaddr_storage *, socklen_t *); extern PyObject *nbd_internal_py_get_aio_view (PyObject *, int); extern int nbd_internal_py_init_aio_buffer (PyObject *); extern PyObject *nbd_internal_py_get_nbd_buffer_type (void); extern PyObject *nbd_internal_py_wrap_errptr (int); extern PyObject *nbd_internal_py_get_subview (PyObject *, const char *, size_t); static inline struct nbd_handle * get_handle (PyObject *obj) { assert (obj); assert (obj != Py_None); return PyCapsule_GetPointer(obj, "nbd_handle"); } /* nbd.Error exception. */ extern PyObject *nbd_internal_py_Error; static inline void raise_exception () { PyObject *args = Py_BuildValue ("si", nbd_get_error (), nbd_get_errno ()); if (args != NULL) { PyErr_SetObject (nbd_internal_py_Error, args); Py_DECREF (args); } } extern PyObject *nbd_internal_py_create ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_close ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_display_version ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_alloc_aio_buffer ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_buffer_is_zero ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_debug ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_debug ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_debug_callback ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_clear_debug_callback ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_stats_bytes_sent ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_stats_chunks_sent ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_stats_bytes_received ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_stats_chunks_received ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_handle_name ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_handle_name ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_private_data ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_private_data ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_export_name ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_export_name ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_request_block_size ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_request_block_size ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_full_info ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_full_info ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_canonical_export_name ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_export_description ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_tls ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_tls ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_tls_negotiated ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_tls_certificates ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_tls_verify_peer ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_tls_verify_peer ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_tls_username ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_tls_username ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_tls_psk_file ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_request_extended_headers ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_request_extended_headers ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_extended_headers_negotiated ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_request_structured_replies ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_request_structured_replies ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_structured_replies_negotiated ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_request_meta_context ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_request_meta_context ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_handshake_flags ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_handshake_flags ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_pread_initialize ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_pread_initialize ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_strict_mode ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_strict_mode ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_opt_mode ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_opt_mode ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_go ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_abort ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_starttls ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_extended_headers ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_structured_reply ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_list ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_info ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_list_meta_context ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_list_meta_context_queries ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_set_meta_context ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_opt_set_meta_context_queries ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_add_meta_context ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_nr_meta_contexts ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_meta_context ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_clear_meta_contexts ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_uri_allow_transports ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_uri_allow_tls ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_uri_allow_local_file ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_connect_uri ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_connect_unix ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_connect_vsock ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_connect_tcp ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_connect_socket ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_connect_command ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_connect_systemd_socket_activation ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_set_socket_activation_name ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_socket_activation_name ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_is_read_only ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_flush ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_fua ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_is_rotational ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_trim ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_zero ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_fast_zero ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_block_status_payload ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_df ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_multi_conn ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_cache ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_can_meta_context ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_protocol ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_size ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_block_size ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_pread ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_pread_structured ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_pwrite ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_shutdown ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_flush ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_trim ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_cache ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_zero ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_block_status ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_block_status_64 ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_block_status_filter ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_poll ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_poll2 ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_connect ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_connect_uri ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_connect_unix ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_connect_vsock ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_connect_tcp ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_connect_socket ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_connect_command ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_connect_systemd_socket_activation ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_go ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_abort ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_starttls ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_extended_headers ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_structured_reply ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_list ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_info ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_list_meta_context ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_list_meta_context_queries ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_set_meta_context ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_opt_set_meta_context_queries ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_pread ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_pread_structured ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_pwrite ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_disconnect ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_flush ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_trim ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_cache ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_zero ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_block_status ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_block_status_64 ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_block_status_filter ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_get_fd ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_get_direction ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_notify_read ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_notify_write ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_is_created ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_is_connecting ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_is_negotiating ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_is_ready ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_is_processing ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_is_dead ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_is_closed ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_command_completed ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_peek_command_completed ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_aio_in_flight ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_connection_state ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_package_name ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_version ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_kill_subprocess ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_supports_tls ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_supports_vsock ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_supports_uri ( PyObject *self, PyObject *args ); extern PyObject *nbd_internal_py_get_uri ( PyObject *self, PyObject *args ); #endif /* LIBNBD_METHODS_H */ libnbd-1.20.3/python/utils.c0000644000175000017500000001314014525371754011351 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Miscellaneous helper functions for Python. */ #include #define PY_SSIZE_T_CLEAN 1 #include #include #include #include #include #include #include #include "methods.h" /* These two functions are used when parsing argv parameters. */ char ** nbd_internal_py_get_string_list (PyObject *obj) { size_t i, len; char **r; assert (obj); if (!PyList_Check (obj)) { PyErr_SetString (PyExc_TypeError, "expecting a list parameter"); return NULL; } Py_ssize_t slen = PyList_Size (obj); if (slen == -1) { PyErr_SetString (PyExc_RuntimeError, "get_string_list: PyList_Size failure"); return NULL; } len = (size_t)slen; r = malloc (sizeof (char *) * (len+1)); if (r == NULL) { PyErr_NoMemory (); return NULL; } for (i = 0; i < len; ++i) { PyObject *bytes = PyUnicode_AsUTF8String (PyList_GetItem (obj, i)); if (!bytes) goto err; r[i] = strdup (PyBytes_AS_STRING (bytes)); Py_DECREF (bytes); if (r[i] == NULL) { PyErr_NoMemory (); goto err; } } r[len] = NULL; return r; err: while (i--) free (r[i]); free (r); return NULL; } void nbd_internal_py_free_string_list (char **argv) { size_t i; if (!argv) return; for (i = 0; argv[i] != NULL; ++i) free (argv[i]); free (argv); } /* Convert a Python object into a struct sockaddr, according to the * general rules described here: * https://docs.python.org/3/library/socket.html * * There is a function in cpython called getsockaddrarg which roughly * does the same thing, but in cpython they know the socket family * already (which we do not). In any case that function cannot be * called directly. */ int nbd_internal_py_get_sockaddr (PyObject *addr, struct sockaddr_storage *ss, socklen_t *len) { memset (ss, 0, sizeof *ss); if (PyUnicode_Check (addr)) { /* AF_UNIX */ struct sockaddr_un *sun = (struct sockaddr_un *)ss; const char *unixsocket; size_t namelen; sun->sun_family = AF_UNIX; unixsocket = PyUnicode_AsUTF8 (addr); if (!unixsocket) goto err; namelen = strlen (unixsocket); if (namelen > sizeof sun->sun_path) { PyErr_SetString (PyExc_RuntimeError, "get_sockaddr: Unix domain socket name too long"); return -1; } memcpy (sun->sun_path, unixsocket, namelen); *len = sizeof *sun; return 0; } #if 0 else if (PyTuple_Check (addr)) { Py_ssize_t n = PyTuple_Size (addr); switch (n) { case 2: /* AF_INET */ /* XXX TODO */ break; case 4: /* AF_INET6 */ /* XXX TODO */ break; default: goto err; } } #endif else { err: PyErr_SetString (PyExc_TypeError, "get_sockaddr: unknown address type"); return -1; } } /* Obtain the type object for nbd.Buffer */ PyObject * nbd_internal_py_get_nbd_buffer_type (void) { static PyObject *type; if (!type) { PyObject *modname = PyUnicode_FromString ("nbd"); PyObject *module = PyImport_Import (modname); assert (module); type = PyObject_GetAttrString (module, "Buffer"); assert (type); Py_DECREF (modname); Py_DECREF (module); } return type; } /* Helper to package callback *error into modifiable PyObject */ PyObject * nbd_internal_py_wrap_errptr (int err) { static PyObject *py_ctypes_mod; if (!py_ctypes_mod) { PyObject *py_modname = PyUnicode_FromString ("ctypes"); if (!py_modname) return NULL; py_ctypes_mod = PyImport_Import (py_modname); Py_DECREF (py_modname); if (!py_ctypes_mod) return NULL; } return PyObject_CallMethod (py_ctypes_mod, "c_int", "i", err); } /* Helper to compute view.toreadonly()[start:end] in chunk callback */ PyObject * nbd_internal_py_get_subview (PyObject *view, const char *subbuf, size_t count) { Py_buffer *orig; const char *base; PyObject *start, *end, *slice; PyObject *ret; assert (PyMemoryView_Check (view)); orig = PyMemoryView_GET_BUFFER (view); assert (PyBuffer_IsContiguous (orig, 'A')); base = orig->buf; assert (subbuf >= base && count <= orig->len && subbuf + count <= base + orig->len); start = PyLong_FromLong (subbuf - base); if (!start) return NULL; end = PyLong_FromLong (subbuf - base + count); if (!end) { Py_DECREF (start); return NULL; } slice = PySlice_New (start, end, NULL); Py_DECREF (start); Py_DECREF (end); if (!slice) return NULL; ret = PyObject_GetItem (view, slice); Py_DECREF (slice); /* memoryview.toreadonly() was only added in Python 3.8. * PyMemoryView_GetContiguous (ret, PyBuf_READ, 'A') doesn't force readonly. * So we mess around directly with the Py_buffer. */ if (ret) PyMemoryView_GET_BUFFER (ret)->readonly = 1; return ret; } libnbd-1.20.3/python/.flake80000644000175000017500000000030214525371754011214 [flake8] # Print the source code generating the error/warning in question. show_source = True # Count the number of occurrences of each error/warning code and print a report. statistics = True libnbd-1.20.3/python/nbd.py0000444000175000017500000047221614636624347011177 # NBD client library in userspace # WARNING: THIS FILE IS GENERATED FROM # generator/generator # ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. # # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ''' Python bindings for libnbd import nbd h = nbd.NBD() h.connect_tcp("localhost", "nbd") buf = h.pread(512, 0) Read the libnbd(3) man page to find out how to use the API. ''' import contextlib import libnbdmod # Re-export Error exception as nbd.Error, adding some methods. from libnbdmod import Error Error.__doc__ = ''' Exception thrown when the underlying libnbd call fails. This exception has three properties to query the error. Use the .string property to return a printable string containing the error message. Use the .errnum property for the associated numeric error value (which may be 0 if the error did not correspond to a system call failure), or the .errno property to return a string containing the Python errno name if one is known (which may be None if the numeric value does not correspond to a known errno name). ''' Error.string = property(lambda self: self.args[0]) def _errno(self): import errno try: return errno.errorcode[self.args[1]] except KeyError: return None Error.errno = property(_errno) Error.errnum = property(lambda self: self.args[1]) def _str(self): if self.errno: return "%s (%s)" % (self.string, self.errno) else: return "%s" % self.string Error.__str__ = _str class ClosedHandle(ValueError): '''This exception is thrown when any method is called on an nbd handle after you have called h.close() on the same handle.''' pass @contextlib.contextmanager def nbd(): ''' This is a context manager function. Python will close the handle automatically even if the body throws an exception: with nbd.nbd() as h: # use the handle 'h' ''' h = NBD() yield h h.close() TLS_DISABLE = 0 TLS_ALLOW = 1 TLS_REQUIRE = 2 SIZE_MINIMUM = 0 SIZE_PREFERRED = 1 SIZE_MAXIMUM = 2 SIZE_PAYLOAD = 3 CMD_FLAG_FUA = 0x01 CMD_FLAG_NO_HOLE = 0x02 CMD_FLAG_DF = 0x04 CMD_FLAG_REQ_ONE = 0x08 CMD_FLAG_FAST_ZERO = 0x10 CMD_FLAG_PAYLOAD_LEN = 0x20 CMD_FLAG_MASK = 0x3f HANDSHAKE_FLAG_FIXED_NEWSTYLE = 0x01 HANDSHAKE_FLAG_NO_ZEROES = 0x02 HANDSHAKE_FLAG_MASK = 0x03 STRICT_COMMANDS = 0x01 STRICT_FLAGS = 0x02 STRICT_BOUNDS = 0x04 STRICT_ZERO_SIZE = 0x08 STRICT_ALIGN = 0x10 STRICT_PAYLOAD = 0x20 STRICT_AUTO_FLAG = 0x40 STRICT_MASK = 0x7f ALLOW_TRANSPORT_TCP = 0x01 ALLOW_TRANSPORT_UNIX = 0x02 ALLOW_TRANSPORT_VSOCK = 0x04 ALLOW_TRANSPORT_MASK = 0x07 SHUTDOWN_ABANDON_PENDING = 0x10000 SHUTDOWN_MASK = 0x10000 AIO_DIRECTION_READ = 1 AIO_DIRECTION_WRITE = 2 AIO_DIRECTION_BOTH = 3 READ_DATA = 1 READ_HOLE = 2 READ_ERROR = 3 NAMESPACE_BASE = "base:" CONTEXT_BASE_ALLOCATION = "base:allocation" STATE_HOLE = 1 STATE_ZERO = 2 NAMESPACE_QEMU = "qemu:" CONTEXT_QEMU_DIRTY_BITMAP = "qemu:dirty-bitmap:" STATE_DIRTY = 1 CONTEXT_QEMU_ALLOCATION_DEPTH = "qemu:allocation-depth" class Buffer(object): '''Asynchronous I/O persistent buffer''' def __init__(self, len): '''Allocate an uninitialized AIO buffer used for nbd.aio_pread.''' self._o = libnbdmod.alloc_aio_buffer(len) @classmethod def from_buffer(cls, buf): '''Create an AIO buffer that shares an existing buffer-like object. Because the buffer is shared, changes to the original are visible to nbd.aio_pwrite, and changes in nbd.aio_pread are visible to the original. ''' self = cls(0) # Ensure that buf is already buffer-like with memoryview(buf): self._o = buf self._init = True return self @classmethod def from_bytearray(cls, ba): '''Create an AIO buffer from a bytearray or other buffer-like object. If ba is not a buffer, it is tried as the parameter to the bytearray constructor. Otherwise, ba is copied. Either way, the resulting AIO buffer is independent from the original. ''' return cls.from_buffer(bytearray(ba)) def to_buffer(self): '''Return a shared view of the AIO buffer contents. This exposes the underlying buffer; changes to the buffer are visible to nbd.aio_pwrite, and changes from nbd.aio_pread are visible in the buffer. ''' if not hasattr(self, '_init'): self._o = bytearray(len(self._o)) self._init = True return self._o def to_bytearray(self): '''Copy an AIO buffer into a bytearray. This copies the contents of an AIO buffer to a new bytearray, which remains independent from the original. ''' if not hasattr(self, '_init'): return bytearray(len(self._o)) return bytearray(self._o) def size(self): '''Return the size of an AIO buffer.''' return len(self) def __len__(self): '''Return the size of an AIO buffer.''' return len(self._o) def is_zero(self, offset=0, size=-1): '''Returns true if and only if all bytes in the buffer are zeroes. Note that although a freshly allocated buffer is uninitialized, this will report it as all zeroes, as it will be force-initialized to zero before any code that can access the buffer's contents. By default this tests the whole buffer, but you can restrict the test to a sub-range of the buffer using the optional offset and size parameters. If size = -1 then we check from offset to the end of the buffer. If size = 0, the function always returns true. If size > 0, we check the interval [offset..offset+size-1]. ''' return libnbdmod.aio_buffer_is_zero(self._o, offset, size, hasattr(self, '_init')) class NBD(object): '''NBD handle''' def __init__(self): '''Create a new NBD handle.''' self._o = libnbdmod.create() def __del__(self): '''Close the NBD handle and underlying connection.''' if self._o: libnbdmod.close(self._o) self._o = None def _check_not_closed(self): if not self._o: raise ClosedHandle("libnbd: method called on closed handle") def close(self): '''Explicitly close the NBD handle and underlying connection. The handle is closed implicitly when its reference count goes to zero (eg. when it goes out of scope or the program ends). This call is only needed if you want to force the handle to close now. After calling this, the program must not call any method on the handle (except the implicit call to __del__ which happens when the final reference is cleaned up). ''' self._check_not_closed() libnbdmod.close(self._o) self._o = None def set_debug(self, debug): u'''▶ set or clear the debug flag Set or clear the debug flag. When debugging is enabled, debugging messages from the library are printed to stderr, unless a debugging callback has been defined too (see "nbd.set_debug_callback") in which case they are sent to that function. This flag defaults to false on newly created handles, except if "LIBNBD_DEBUG=1" is set in the environment in which case it defaults to true. ''' self._check_not_closed() return libnbdmod.set_debug(self._o, debug) def get_debug(self): u'''▶ return the state of the debug flag Return the state of the debug flag on this handle. ''' self._check_not_closed() return libnbdmod.get_debug(self._o) def set_debug_callback(self, debug): u'''▶ set the debug callback Set the debug callback. This function is called when the library emits debug messages, when debugging is enabled on a handle. The callback parameters are "user_data" passed to this function, the name of the libnbd function emitting the debug message ("context"), and the message itself ("msg"). If no debug callback is set on a handle then messages are printed on "stderr". The callback should not call "nbd_*" APIs on the same handle since it can be called while holding the handle lock and will cause a deadlock. ''' self._check_not_closed() return libnbdmod.set_debug_callback(self._o, debug) def clear_debug_callback(self): u'''▶ clear the debug callback Remove the debug callback if one was previously associated with the handle (with "nbd.set_debug_callback"). If no callback was associated this does nothing. ''' self._check_not_closed() return libnbdmod.clear_debug_callback(self._o) def stats_bytes_sent(self): u'''▶ statistics of bytes sent over connection so far Return the number of bytes that the client has sent to the server. This tracks the plaintext bytes utilized by the NBD protocol; it may differ from the number of bytes actually sent over the connection, particularly when TLS is in use. ''' self._check_not_closed() return libnbdmod.stats_bytes_sent(self._o) def stats_chunks_sent(self): u'''▶ statistics of chunks sent over connection so far Return the number of chunks that the client has sent to the server, where a chunk is a group of bytes delineated by a magic number that cannot be further subdivided without breaking the protocol. This number does not necessarily relate to the number of API calls made, nor to the number of TCP packets sent over the connection. ''' self._check_not_closed() return libnbdmod.stats_chunks_sent(self._o) def stats_bytes_received(self): u'''▶ statistics of bytes received over connection so far Return the number of bytes that the client has received from the server. This tracks the plaintext bytes utilized by the NBD protocol; it may differ from the number of bytes actually received over the connection, particularly when TLS is in use. ''' self._check_not_closed() return libnbdmod.stats_bytes_received(self._o) def stats_chunks_received(self): u'''▶ statistics of chunks received over connection so far Return the number of chunks that the client has received from the server, where a chunk is a group of bytes delineated by a magic number that cannot be further subdivided without breaking the protocol. This number does not necessarily relate to the number of API calls made, nor to the number of TCP packets received over the connection. ''' self._check_not_closed() return libnbdmod.stats_chunks_received(self._o) def set_handle_name(self, handle_name): u'''▶ set the handle name Handles have a name which is unique within the current process. The handle name is used in debug output. Handle names are normally generated automatically and have the form "nbd1", "nbd2", etc., but you can optionally use this call to give the handles a name which is meaningful for your application to make debugging output easier to understand. ''' self._check_not_closed() return libnbdmod.set_handle_name(self._o, handle_name) def get_handle_name(self): u'''▶ get the handle name Get the name of the handle. If it was previously set by calling "nbd.set_handle_name" then this returns the name that was set. Otherwise it will return a generic name like "nbd1", "nbd2", etc. ''' self._check_not_closed() return libnbdmod.get_handle_name(self._o) def set_private_data(self, private_data): u'''▶ set the per-handle private data Handles contain a private data field for applications to use for any purpose. When calling libnbd from C, the type of this field is "uintptr_t" so it can be used to store an unsigned integer or a pointer. In non-C bindings it can be used to store an unsigned integer. This function sets the value of this field and returns the old value (or 0 if it was not previously set). ''' self._check_not_closed() return libnbdmod.set_private_data(self._o, private_data) def get_private_data(self): u'''▶ get the per-handle private data Return the value of the private data field set previously by a call to "nbd.set_private_data" (or 0 if it was not previously set). ''' self._check_not_closed() return libnbdmod.get_private_data(self._o) def set_export_name(self, export_name): u'''▶ set the export name For servers which require an export name or can serve different content on different exports, set the "export_name" to connect to. The default is the empty string "". This is only relevant when connecting to servers using the newstyle protocol as the oldstyle protocol did not support export names. The NBD protocol limits export names to 4096 bytes, but servers may not support the full length. The encoding of export names is always UTF-8. When option mode is not in use, the export name must be set before beginning a connection. However, when "nbd.set_opt_mode" has enabled option mode, it is possible to change the export name prior to "nbd.opt_go". In particular, the use of "nbd.opt_list" during negotiation can be used to determine a name the server is likely to accept, and "nbd.opt_info" can be used to learn details about an export before connecting. This call may be skipped if using "nbd.connect_uri" to connect to a URI that includes an export name. ''' self._check_not_closed() return libnbdmod.set_export_name(self._o, export_name) def get_export_name(self): u'''▶ get the export name Get the export name associated with the handle. This is the name that libnbd requests; see "nbd.get_canonical_export_name" for determining if the server has a different canonical name for the given export (most common when requesting the default export name of an empty string "") ''' self._check_not_closed() return libnbdmod.get_export_name(self._o) def set_request_block_size(self, request): u'''▶ control whether NBD_OPT_GO requests block size By default, when connecting to an export, libnbd requests that the server report any block size restrictions. The NBD protocol states that a server may supply block sizes regardless of whether the client requests them, and libnbd will report those block sizes (see "nbd.get_block_size"); conversely, if a client does not request block sizes, the server may reject the connection instead of dealing with a client sending unaligned requests. This function makes it possible to test server behavior by emulating older clients. Note that even when block size is requested, the server is not obligated to provide any. Furthermore, if block sizes are provided (whether or not the client requested them), libnbd enforces alignment to those sizes unless "nbd.set_strict_mode" is used to bypass client-side safety checks. ''' self._check_not_closed() return libnbdmod.set_request_block_size(self._o, request) def get_request_block_size(self): u'''▶ see if NBD_OPT_GO requests block size Return the state of the block size request flag on this handle. ''' self._check_not_closed() return libnbdmod.get_request_block_size(self._o) def set_full_info(self, request): u'''▶ control whether NBD_OPT_GO requests extra details By default, when connecting to an export, libnbd only requests the details it needs to service data operations. The NBD protocol says that a server can supply optional information, such as a canonical name of the export (see "nbd.get_canonical_export_name") or a description of the export (see "nbd.get_export_description"), but that a hint from the client makes it more likely for this extra information to be provided. This function controls whether libnbd will provide that hint. Note that even when full info is requested, the server is not obligated to reply with all information that libnbd requested. Similarly, libnbd will ignore any optional server information that libnbd has not yet been taught to recognize. Furthermore, the hint to request block sizes is independently controlled via "nbd.set_request_block_size". ''' self._check_not_closed() return libnbdmod.set_full_info(self._o, request) def get_full_info(self): u'''▶ see if NBD_OPT_GO requests extra details Return the state of the full info request flag on this handle. ''' self._check_not_closed() return libnbdmod.get_full_info(self._o) def get_canonical_export_name(self): u'''▶ return the canonical export name, if the server has one The NBD protocol permits a server to report an optional canonical export name, which may differ from the client's request (as set by "nbd.set_export_name" or "nbd.connect_uri"). This function accesses any name returned by the server; it may be the same as the client request, but is more likely to differ when the client requested a connection to the default export name (an empty string ""). Some servers are unlikely to report a canonical name unless the client specifically hinted about wanting it, via "nbd.set_full_info". ''' self._check_not_closed() return libnbdmod.get_canonical_export_name(self._o) def get_export_description(self): u'''▶ return the export description, if the server has one The NBD protocol permits a server to report an optional export description. This function reports any description returned by the server. Some servers are unlikely to report a description unless the client specifically hinted about wanting it, via "nbd.set_full_info". For qemu-nbd(8), a description is set with *-D*. ''' self._check_not_closed() return libnbdmod.get_export_description(self._o) def set_tls(self, tls): u'''▶ enable or require TLS (authentication and encryption) Enable or require TLS (authenticated and encrypted connections) to the NBD server. The possible settings are: "TLS_DISABLE" Disable TLS. (The default setting, unless using "nbd.connect_uri" with a URI that requires TLS). This setting is also necessary if you use "nbd.set_opt_mode" and want to interact in plaintext with a server that implements the NBD protocol's "SELECTIVETLS" mode, prior to enabling TLS with "nbd.opt_starttls". Most NBD servers with TLS support prefer the NBD protocol's "FORCEDTLS" mode, so this sort of manual interaction tends to be useful mainly during integration testing. "TLS_ALLOW" Enable TLS if possible. This option is insecure (or best effort) in that in some cases it will fall back to an unencrypted and/or unauthenticated connection if TLS could not be established. Use "TLS_REQUIRE" below if the connection must be encrypted. Some servers will drop the connection if TLS fails so fallback may not be possible. "TLS_REQUIRE" Require an encrypted and authenticated TLS connection. Always fail to connect if the connection is not encrypted and authenticated. As well as calling this you may also need to supply the path to the certificates directory ("nbd.set_tls_certificates"), the username ("nbd.set_tls_username") and/or the Pre-Shared Keys (PSK) file ("nbd.set_tls_psk_file"). For now, when using "nbd.connect_uri", any URI query parameters related to TLS are not handled automatically. Setting the level higher than zero will fail if libnbd was not compiled against gnutls; you can test whether this is the case with "nbd.supports_tls". ''' self._check_not_closed() return libnbdmod.set_tls(self._o, tls) def get_tls(self): u'''▶ get the TLS request setting Get the TLS request setting. Note: If you want to find out if TLS was actually negotiated on a particular connection use "nbd.get_tls_negotiated" instead. ''' self._check_not_closed() return libnbdmod.get_tls(self._o) def get_tls_negotiated(self): u'''▶ find out if TLS was negotiated on a connection After connecting you may call this to find out if the connection is using TLS. This is normally useful only if you set the TLS request mode to "TLS_ALLOW" (see "nbd.set_tls"), because in this mode we try to use TLS but fall back to unencrypted if it was not available. This function will tell you if TLS was negotiated or not. In "TLS_REQUIRE" mode (the most secure) the connection would have failed if TLS could not be negotiated. With "TLS_DISABLE" mode, TLS is not tried automatically; but if the NBD server uses the less-common "SELECTIVETLS" mode, this function reports whether a manual "nbd.opt_starttls" enabled TLS or if the connection is still plaintext. ''' self._check_not_closed() return libnbdmod.get_tls_negotiated(self._o) def set_tls_certificates(self, dir): u'''▶ set the path to the TLS certificates directory Set the path to the TLS certificates directory. If not set and TLS is used then a compiled in default is used. For root this is "/etc/pki/libnbd/". For non-root this is "$HOME/.pki/libnbd" and "$HOME/.config/pki/libnbd". If none of these directories can be found then the system trusted CAs are used. This function may be called regardless of whether TLS is supported, but will have no effect unless "nbd.set_tls" is also used to request or require TLS. ''' self._check_not_closed() return libnbdmod.set_tls_certificates(self._o, dir) def set_tls_verify_peer(self, verify): u'''▶ set whether we verify the identity of the server Set this flag to control whether libnbd will verify the identity of the server from the server's certificate and the certificate authority. This defaults to true when connecting to TCP servers using TLS certificate authentication, and false otherwise. This function may be called regardless of whether TLS is supported, but will have no effect unless "nbd.set_tls" is also used to request or require TLS. ''' self._check_not_closed() return libnbdmod.set_tls_verify_peer(self._o, verify) def get_tls_verify_peer(self): u'''▶ get whether we verify the identity of the server Get the verify peer flag. ''' self._check_not_closed() return libnbdmod.get_tls_verify_peer(self._o) def set_tls_username(self, username): u'''▶ set the TLS username Set the TLS client username. This is used if authenticating with PSK over TLS is enabled. If not set then the local username is used. This function may be called regardless of whether TLS is supported, but will have no effect unless "nbd.set_tls" is also used to request or require TLS. ''' self._check_not_closed() return libnbdmod.set_tls_username(self._o, username) def get_tls_username(self): u'''▶ get the current TLS username Get the current TLS username. ''' self._check_not_closed() return libnbdmod.get_tls_username(self._o) def set_tls_psk_file(self, filename): u'''▶ set the TLS Pre-Shared Keys (PSK) filename Set the TLS Pre-Shared Keys (PSK) filename. This is used if trying to authenticate to the server using with a pre-shared key. There is no default so if this is not set then PSK authentication cannot be used to connect to the server. This function may be called regardless of whether TLS is supported, but will have no effect unless "nbd.set_tls" is also used to request or require TLS. ''' self._check_not_closed() return libnbdmod.set_tls_psk_file(self._o, filename) def set_request_extended_headers(self, request): u'''▶ control use of extended headers By default, libnbd tries to negotiate extended headers with the server, as this protocol extension permits the use of 64-bit zero, trim, and block status actions. However, for integration testing, it can be useful to clear this flag rather than find a way to alter the server to fail the negotiation request. For backwards compatibility, the setting of this knob is ignored if "nbd.set_request_structured_replies" is also set to false, since the use of extended headers implies structured replies. ''' self._check_not_closed() return libnbdmod.set_request_extended_headers(self._o, request) def get_request_extended_headers(self): u'''▶ see if extended headers are attempted Return the state of the request extended headers flag on this handle. Note: If you want to find out if extended headers were actually negotiated on a particular connection use "nbd.get_extended_headers_negotiated" instead. ''' self._check_not_closed() return libnbdmod.get_request_extended_headers(self._o) def get_extended_headers_negotiated(self): u'''▶ see if extended headers are in use After connecting you may call this to find out if the connection is using extended headers. Note that this setting is sticky; this can return true even after a second "nbd.opt_extended_headers" returns false because the server detected a duplicate request. When extended headers are not in use, commands are limited to a 32-bit length, even when the libnbd API uses a 64-bit parameter to express the length. But even when extended headers are supported, the server may enforce other limits, visible through "nbd.get_block_size". Note that when extended headers are negotiated, you should prefer the use of "nbd.block_status_64" instead of "nbd.block_status" if any of the meta contexts you requested via "nbd.add_meta_context" might return 64-bit status values; however, all of the well-known meta contexts covered by current "LIBNBD_CONTEXT_*" constants only return 32-bit status. ''' self._check_not_closed() return libnbdmod.get_extended_headers_negotiated(self._o) def set_request_structured_replies(self, request): u'''▶ control use of structured replies By default, libnbd tries to negotiate structured replies with the server, as this protocol extension must be in use before "nbd.can_meta_context" or "nbd.can_df" can return true. However, for integration testing, it can be useful to clear this flag rather than find a way to alter the server to fail the negotiation request. It is also useful to set this to false prior to using "nbd.set_opt_mode" if it is desired to control when to send "nbd.opt_structured_reply" during negotiation. Note that setting this knob to false also disables any automatic request for extended headers. ''' self._check_not_closed() return libnbdmod.set_request_structured_replies(self._o, request) def get_request_structured_replies(self): u'''▶ see if structured replies are attempted Return the state of the request structured replies flag on this handle. Note: If you want to find out if structured replies were actually negotiated on a particular connection use "nbd.get_structured_replies_negotiated" instead. ''' self._check_not_closed() return libnbdmod.get_request_structured_replies(self._o) def get_structured_replies_negotiated(self): u'''▶ see if structured replies are in use After connecting you may call this to find out if the connection is using structured replies. Note that this setting is sticky; this can return true even after a second "nbd.opt_structured_reply" returns false because the server detected a duplicate request. Note that if the connection negotiates extended headers, this function returns true (as extended headers imply structured replies) even if no explicit request for structured replies was attempted. ''' self._check_not_closed() return libnbdmod.get_structured_replies_negotiated(self._o) def set_request_meta_context(self, request): u'''▶ control whether connect automatically requests meta contexts This function controls whether the act of connecting to an export (all "nbd_connect_*" calls when "nbd.set_opt_mode" is false, or "nbd.opt_go" and "nbd.opt_info" when option mode is enabled) will also try to issue NBD_OPT_SET_META_CONTEXT when the server supports structured replies or extended headers and any contexts were registered by "nbd.add_meta_context". The default setting is true; however the extra step of negotiating meta contexts is not always desirable: performing both info and go on the same export works without needing to re-negotiate contexts on the second call; integration testing of other servers may benefit from manual invocation of "nbd.opt_set_meta_context" at other times in the negotiation sequence; and even when using just "nbd.opt_info", it can be faster to collect the server's results by relying on the callback function passed to "nbd.opt_list_meta_context" than a series of post-process calls to "nbd.can_meta_context". Note that this control has no effect if the server does not negotiate structured replies or extended headers, or if the client did not request any contexts via "nbd.add_meta_context". Setting this control to false may cause "nbd.block_status" to fail. ''' self._check_not_closed() return libnbdmod.set_request_meta_context(self._o, request) def get_request_meta_context(self): u'''▶ see if connect automatically requests meta contexts Return the state of the automatic meta context request flag on this handle. ''' self._check_not_closed() return libnbdmod.get_request_meta_context(self._o) def set_handshake_flags(self, flags): u'''▶ control use of handshake flags By default, libnbd tries to negotiate all possible handshake flags that are also supported by the server, since omitting a handshake flag can prevent the use of other functionality such as TLS encryption or structured replies. However, for integration testing, it can be useful to reduce the set of flags supported by the client to test that a particular server can handle various clients that were compliant to older versions of the NBD specification. The "flags" argument is a bitmask, including zero or more of the following handshake flags: "HANDSHAKE_FLAG_FIXED_NEWSTYLE" = 1 The server gracefully handles unknown option requests from the client, rather than disconnecting. Without this flag, a client cannot safely request to use extensions such as TLS encryption or structured replies, as the request may cause an older server to drop the connection. "HANDSHAKE_FLAG_NO_ZEROES" = 2 If the client is forced to use "NBD_OPT_EXPORT_NAME" instead of the preferred "NBD_OPT_GO", this flag allows the server to send fewer all-zero padding bytes over the connection. For convenience, the constant "HANDSHAKE_FLAG_MASK" is available to describe all flags supported by this build of libnbd. Future NBD extensions may add further flags, which in turn may be enabled by default in newer libnbd. As such, when attempting to disable only one specific bit, it is wiser to first call "nbd.get_handshake_flags" and modify that value, rather than blindly setting a constant value. ''' self._check_not_closed() return libnbdmod.set_handshake_flags(self._o, flags) def get_handshake_flags(self): u'''▶ see which handshake flags are supported Return the state of the handshake flags on this handle. When the handle has not yet completed a connection (see "nbd.aio_is_created"), this returns the flags that the client is willing to use, provided the server also advertises those flags. After the connection is ready (see "nbd.aio_is_ready"), this returns the flags that were actually agreed on between the server and client. If the NBD protocol defines new handshake flags, then the return value from a newer library version may include bits that were undefined at the time of compilation. ''' self._check_not_closed() return libnbdmod.get_handshake_flags(self._o) def set_pread_initialize(self, request): u'''▶ control whether libnbd pre-initializes read buffers By default, libnbd will pre-initialize the contents of a buffer passed to calls such as "nbd.pread" to all zeroes prior to checking for any other errors, so that even if a client application passed in an uninitialized buffer but fails to check for errors, it will not result in a potential security risk caused by an accidental leak of prior heap contents (see CVE-2022-0485 in libnbd-security(3) for an example of a security hole in an application built against an earlier version of libnbd that lacked consistent pre-initialization). However, for a client application that has audited that an uninitialized buffer is never dereferenced, or which performs its own pre-initialization, libnbd's sanitization efforts merely pessimize performance (although the time spent in pre-initialization may pale in comparison to time spent waiting on network packets). Calling this function with "request" set to false tells libnbd to skip the buffer initialization step in read commands. ''' self._check_not_closed() return libnbdmod.set_pread_initialize(self._o, request) def get_pread_initialize(self): u'''▶ see whether libnbd pre-initializes read buffers Return whether libnbd performs a pre-initialization of a buffer passed to "nbd.pread" and similar to all zeroes, as set by "nbd.set_pread_initialize". ''' self._check_not_closed() return libnbdmod.get_pread_initialize(self._o) def set_strict_mode(self, flags): u'''▶ control how strictly to follow NBD protocol By default, libnbd tries to detect requests that would trigger undefined behavior in the NBD protocol, and rejects them client side without causing any network traffic, rather than risking undefined server behavior. However, for integration testing, it can be handy to relax the strictness of libnbd, to coerce it into sending such requests over the network for testing the robustness of the server in dealing with such traffic. The "flags" argument is a bitmask, including zero or more of the following strictness flags: "STRICT_COMMANDS" = 0x1 If set, this flag rejects client requests that do not comply with the set of advertised server flags (for example, attempting a write on a read-only server, or attempting to use "CMD_FLAG_FUA" when "nbd.can_fua" returned false). If clear, this flag relies on the server to reject unexpected commands. "STRICT_FLAGS" = 0x2 If set, this flag rejects client requests that attempt to set a command flag not recognized by libnbd (those outside of "CMD_FLAG_MASK"), or a flag not normally associated with a command (such as using "CMD_FLAG_FUA" on a read command). If clear, all flags are sent on to the server, even if sending such a flag may cause the server to change its reply in a manner that confuses libnbd, perhaps causing deadlock or ending the connection. Flags that are known by libnbd as associated with a given command (such as "CMD_FLAG_DF" for "nbd.pread_structured" gated by "nbd.can_df") are controlled by "STRICT_COMMANDS" instead; and "CMD_FLAG_PAYLOAD_LEN" is managed automatically by libnbd unless "STRICT_AUTO_FLAG" is disabled. Note that the NBD protocol only supports 16 bits of command flags, even though the libnbd API uses "uint32_t"; bits outside of the range permitted by the protocol are always a client-side error. "STRICT_BOUNDS" = 0x4 If set, this flag rejects client requests that would exceed the export bounds without sending any traffic to the server. If clear, this flag relies on the server to detect out-of-bounds requests. "STRICT_ZERO_SIZE" = 0x8 If set, this flag rejects client requests with length 0. If clear, this permits zero-length requests to the server, which may produce undefined results. "STRICT_ALIGN" = 0x10 If set, and the server provided minimum block sizes (see "SIZE_MINIMUM" for "nbd.get_block_size"), this flag rejects client requests that do not have length and offset aligned to the server's minimum requirements. If clear, unaligned requests are sent to the server, where it is up to the server whether to honor or reject the request. "STRICT_PAYLOAD" = 0x20 If set, the client refuses to send a command to the server with more than libnbd's outgoing payload maximum (see "SIZE_PAYLOAD" for "nbd.get_block_size"), whether or not the server advertised a block size maximum. If clear, oversize requests up to 64MiB may be attempted, although requests larger than 32MiB are liable to cause some servers to disconnect. "STRICT_AUTO_FLAG" = 0x40 If set, commands that accept the "CMD_FLAG_PAYLOAD_LEN" flag (such as "nbd.pwrite" and nbd_block_status_filter(3)) ignore the presence or absence of that flag from the caller, instead sending the value over the wire that matches the server's expectations based on whether extended headers were negotiated when the connection was made. If clear, the caller takes on the responsibility for whether the payload length flag is set or clear during the affected command, which can be useful during integration testing but is more likely to lead to undefined behavior. For convenience, the constant "STRICT_MASK" is available to describe all strictness flags supported by this build of libnbd. Future versions of libnbd may add further flags, which are likely to be enabled by default for additional client-side filtering. As such, when attempting to relax only one specific bit while keeping remaining checks at the client side, it is wiser to first call "nbd.get_strict_mode" and modify that value, rather than blindly setting a constant value. ''' self._check_not_closed() return libnbdmod.set_strict_mode(self._o, flags) def get_strict_mode(self): u'''▶ see which strictness flags are in effect Return flags indicating which protocol strictness items are being enforced locally by libnbd rather than the server. The return value from a newer library version may include bits that were undefined at the time of compilation. ''' self._check_not_closed() return libnbdmod.get_strict_mode(self._o) def set_opt_mode(self, enable): u'''▶ control option mode, for pausing during option negotiation Set this flag to true in order to request that a connection command "nbd_connect_*" will pause for negotiation options rather than proceeding all the way to the ready state, when communicating with a newstyle server. This setting has no effect when connecting to an oldstyle server. Note that libnbd defaults to attempting "NBD_OPT_STARTTLS", "NBD_OPT_EXTENDED_HEADERS", and "NBD_OPT_STRUCTURED_REPLY" before letting you control remaining negotiation steps; if you need control over these steps as well, first set "nbd.set_tls" to "TLS_DISABLE", and "nbd.set_request_extended_headers" or "nbd.set_request_structured_replies" to false, before starting the connection attempt. When option mode is enabled, you have fine-grained control over which options are negotiated, compared to the default of the server negotiating everything on your behalf using settings made before starting the connection. To leave the mode and proceed on to the ready state, you must use "nbd.opt_go" successfully; a failed "nbd.opt_go" returns to the negotiating state to allow a change of export name before trying again. You may also use "nbd.opt_abort" or "nbd.shutdown" to end the connection without finishing negotiation. ''' self._check_not_closed() return libnbdmod.set_opt_mode(self._o, enable) def get_opt_mode(self): u'''▶ return whether option mode was enabled Return true if option negotiation mode was enabled on this handle. ''' self._check_not_closed() return libnbdmod.get_opt_mode(self._o) def opt_go(self): u'''▶ end negotiation and move on to using an export Request that the server finish negotiation and move on to serving the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri". This can only be used if "nbd.set_opt_mode" enabled option mode. By default, libnbd will automatically request all meta contexts registered by "nbd.add_meta_context" as part of this call; but this can be suppressed with "nbd.set_request_meta_context", particularly if "nbd.opt_set_meta_context" was used earlier in the negotiation sequence. If this fails, the server may still be in negotiation, where it is possible to attempt another option such as a different export name; although older servers will instead have killed the connection. ''' self._check_not_closed() return libnbdmod.opt_go(self._o) def opt_abort(self): u'''▶ end negotiation and close the connection Request that the server finish negotiation, gracefully if possible, then close the connection. This can only be used if "nbd.set_opt_mode" enabled option mode. ''' self._check_not_closed() return libnbdmod.opt_abort(self._o) def opt_starttls(self): u'''▶ request the server to initiate TLS Request that the server initiate a secure TLS connection, by sending "NBD_OPT_STARTTLS". This can only be used if "nbd.set_opt_mode" enabled option mode; furthermore, if you use "nbd.set_tls" to request anything other than the default of "TLS_DISABLE", then libnbd will have already attempted a TLS connection prior to allowing you control over option negotiation. This command is disabled if "nbd.supports_tls" reports false. This function is mainly useful for integration testing of corner cases in server handling; in particular, misuse of this function when coupled with a server that is not careful about resetting stateful commands such as "nbd.opt_structured_reply" could result in a security hole (see CVE-2021-3716 against nbdkit, for example). Thus, when security is a concern, you should instead prefer to use "nbd.set_tls" with "TLS_REQUIRE" and let libnbd negotiate TLS automatically. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection, which can include when the server rejects credentials supplied during the TLS handshake). Note that the NBD protocol documents that requesting TLS after it is already enabled is a client error; most servers will gracefully fail a second request, but that does not downgrade a TLS session that has already been established, as reported by "nbd.get_tls_negotiated". ''' self._check_not_closed() return libnbdmod.opt_starttls(self._o) def opt_extended_headers(self): u'''▶ request the server to enable extended headers Request that the server use extended headers, by sending "NBD_OPT_EXTENDED_HEADERS". This can only be used if "nbd.set_opt_mode" enabled option mode; furthermore, libnbd defaults to automatically requesting this unless you use "nbd.set_request_extended_headers" or "nbd.set_request_structured_replies" prior to connecting. This function is mainly useful for integration testing of corner cases in server handling. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection). Note that some servers fail a second request as redundant; libnbd assumes that once one request has succeeded, then extended headers are supported (as visible by "nbd.get_extended_headers_negotiated") regardless if later calls to this function return false. If this function returns true, the use of structured replies is implied. ''' self._check_not_closed() return libnbdmod.opt_extended_headers(self._o) def opt_structured_reply(self): u'''▶ request the server to enable structured replies Request that the server use structured replies, by sending "NBD_OPT_STRUCTURED_REPLY". This can only be used if "nbd.set_opt_mode" enabled option mode; furthermore, libnbd defaults to automatically requesting this unless you use "nbd.set_request_structured_replies" prior to connecting. This function is mainly useful for integration testing of corner cases in server handling. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection). Note that some servers fail a second request as redundant; libnbd assumes that once one request has succeeded, then structured replies are supported (as visible by "nbd.get_structured_replies_negotiated") regardless if later calls to this function return false. Similarly, a server may fail this request if extended headers are already negotiated, since extended headers take priority. ''' self._check_not_closed() return libnbdmod.opt_structured_reply(self._o) def opt_list(self, list): u'''▶ request the server to list all exports during negotiation Request that the server list all exports that it supports. This can only be used if "nbd.set_opt_mode" enabled option mode. The "list" function is called once per advertised export, with any "user_data" passed to this function, and with "name" and "description" supplied by the server. Many servers omit descriptions, in which case "description" will be an empty string. Remember that it is not safe to call "nbd.set_export_name" from within the context of the callback function; rather, your code must copy any "name" needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of exports that were advertised by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list to avoid being an information leak, may encounter a failure after delivering partial results, or may refuse to answer more than one query per connection in the interest of avoiding negotiation that does not resolve. Thus, this function may succeed even when no exports are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of exports that might be advertised, so client code should be aware that a server may send a lengthy list. For nbd-server(1) you will need to allow clients to make list requests by adding "allowlist=true" to the "[generic]" section of /etc/nbd-server/config. For qemu-nbd(8), a description is set with *-D*. ''' self._check_not_closed() return libnbdmod.opt_list(self._o, list) def opt_info(self): u'''▶ request the server for information about an export Request that the server supply information about the export name previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri". This can only be used if "nbd.set_opt_mode" enabled option mode. If successful, functions like "nbd.is_read_only" and "nbd.get_size" will report details about that export. If "nbd.set_request_meta_context" is set (the default) and structured replies or extended headers were negotiated, it is also valid to use "nbd.can_meta_context" after this call. However, it may be more efficient to clear that setting and manually utilize "nbd.opt_list_meta_context" with its callback approach, for learning which contexts an export supports. In general, if "nbd.opt_go" is called next, that call will likely succeed with the details remaining the same, although this is not guaranteed by all servers. Not all servers understand this request, and even when it is understood, the server might fail the request even when a corresponding "nbd.opt_go" would succeed. ''' self._check_not_closed() return libnbdmod.opt_info(self._o) def opt_list_meta_context(self, context): u'''▶ list available meta contexts, using implicit query list Request that the server list available meta contexts associated with the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri", and with a list of queries from prior calls to "nbd.add_meta_context" (see "nbd.opt_list_meta_context_queries" if you want to supply an explicit query list instead). This can only be used if "nbd.set_opt_mode" enabled option mode. The NBD protocol allows a client to decide how many queries to ask the server. Rather than taking that list of queries as a parameter to this function, libnbd reuses the current list of requested meta contexts as set by "nbd.add_meta_context"; you can use "nbd.clear_meta_contexts" to set up a different list of queries. When the list is empty, a server will typically reply with all contexts that it supports; when the list is non-empty, the server will reply only with supported contexts that match the client's request. Note that a reply by the server might be encoded to represent several feasible contexts within one string, rather than multiple strings per actual context name that would actually succeed during "nbd.opt_go"; so it is still necessary to use "nbd.can_meta_context" after connecting to see which contexts are actually supported. The "context" function is called once per server reply, with any "user_data" passed to this function, and with "name" supplied by the server. Remember that it is not safe to call "nbd.add_meta_context" from within the context of the callback function; rather, your code must copy any "name" needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of replies that might be advertised, so client code should be aware that a server may send a lengthy list. ''' self._check_not_closed() return libnbdmod.opt_list_meta_context(self._o, context) def opt_list_meta_context_queries(self, queries, context): u'''▶ list available meta contexts, using explicit query list Request that the server list available meta contexts associated with the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri", and with an explicit list of queries provided as a parameter (see "nbd.opt_list_meta_context" if you want to reuse an implicit query list instead). This can only be used if "nbd.set_opt_mode" enabled option mode. The NBD protocol allows a client to decide how many queries to ask the server. For this function, the list is explicit in the "queries" parameter. When the list is empty, a server will typically reply with all contexts that it supports; when the list is non-empty, the server will reply only with supported contexts that match the client's request. Note that a reply by the server might be encoded to represent several feasible contexts within one string, rather than multiple strings per actual context name that would actually succeed during "nbd.opt_go"; so it is still necessary to use "nbd.can_meta_context" after connecting to see which contexts are actually supported. The "context" function is called once per server reply, with any "user_data" passed to this function, and with "name" supplied by the server. Remember that it is not safe to call "nbd.add_meta_context" from within the context of the callback function; rather, your code must copy any "name" needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of replies that might be advertised, so client code should be aware that a server may send a lengthy list. ''' self._check_not_closed() return libnbdmod.opt_list_meta_context_queries(self._o, queries, context) def opt_set_meta_context(self, context): u'''▶ select specific meta contexts, using implicit query list Request that the server supply all recognized meta contexts registered through prior calls to "nbd.add_meta_context", in conjunction with the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri". This can only be used if "nbd.set_opt_mode" enabled option mode. Normally, this function is redundant, as "nbd.opt_go" automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with "nbd.set_request_meta_context" to bypass the automatic context request normally performed by "nbd.opt_go". The NBD protocol allows a client to decide how many queries to ask the server. Rather than taking that list of queries as a parameter to this function, libnbd reuses the current list of requested meta contexts as set by "nbd.add_meta_context"; you can use "nbd.clear_meta_contexts" to set up a different list of queries (see "nbd.opt_set_meta_context_queries" to pass an explicit list of contexts instead). Since this function is primarily designed for testing servers, libnbd does not prevent the use of this function on an empty list or when "nbd.set_request_structured_replies" has disabled structured replies, in order to see how a server behaves. The "context" function is called once per server reply, with any "user_data" passed to this function, and with "name" supplied by the server. Additionally, each server name will remain visible through "nbd.can_meta_context" until the next attempt at "nbd.set_export_name" or "nbd.opt_set_meta_context", as well as "nbd.opt_go" or "nbd.opt_info" that trigger an automatic meta context request. Remember that it is not safe to call any "nbd_*" APIs from within the context of the callback function. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. ''' self._check_not_closed() return libnbdmod.opt_set_meta_context(self._o, context) def opt_set_meta_context_queries(self, queries, context): u'''▶ select specific meta contexts, using explicit query list Request that the server supply all recognized meta contexts passed in through "queries", in conjunction with the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri". This can only be used if "nbd.set_opt_mode" enabled option mode. Normally, this function is redundant, as "nbd.opt_go" automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with "nbd.set_request_meta_context" to bypass the automatic context request normally performed by "nbd.opt_go". The NBD protocol allows a client to decide how many queries to ask the server. This function takes an explicit list of queries; to instead reuse an implicit list, see "nbd.opt_set_meta_context". Since this function is primarily designed for testing servers, libnbd does not prevent the use of this function on an empty list or when "nbd.set_request_structured_replies" has disabled structured replies, in order to see how a server behaves. The "context" function is called once per server reply, with any "user_data" passed to this function, and with "name" supplied by the server. Additionally, each server name will remain visible through "nbd.can_meta_context" until the next attempt at "nbd.set_export_name" or "nbd.opt_set_meta_context", as well as "nbd.opt_go" or "nbd.opt_info" that trigger an automatic meta context request. Remember that it is not safe to call any "nbd_*" APIs from within the context of the callback function. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. ''' self._check_not_closed() return libnbdmod.opt_set_meta_context_queries(self._o, queries, context) def add_meta_context(self, name): u'''▶ ask server to negotiate metadata context During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as "base:allocation") which describe information returned by the "nbd.block_status_64" command (for "base:allocation" this is whether blocks of data are allocated, zero or sparse). This call adds one metadata context to the list to be negotiated. You can call it as many times as needed. The list is initially empty when the handle is created; you can check the contents of the list with "nbd.get_nr_meta_contexts" and "nbd.get_meta_context", or clear it with "nbd.clear_meta_contexts". The NBD protocol limits meta context names to 4096 bytes, but servers may not support the full length. The encoding of meta context names is always UTF-8. Not all servers support all metadata contexts. To learn if a context was actually negotiated, call "nbd.can_meta_context" after connecting. The single parameter is the name of the metadata context, for example "CONTEXT_BASE_ALLOCATION". includes defined constants beginning with "CONTEXT_" for some well-known contexts, but you are free to pass in other contexts. Other metadata contexts are server-specific, but include "qemu:dirty-bitmap:..." and "qemu:allocation-depth" for qemu-nbd (see qemu-nbd *-B* and *-A* options). ''' self._check_not_closed() return libnbdmod.add_meta_context(self._o, name) def get_nr_meta_contexts(self): u'''▶ return the current number of requested meta contexts During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as "base:allocation") which describe information returned by the "nbd.block_status_64" command (for "base:allocation" this is whether blocks of data are allocated, zero or sparse). This command returns how many meta contexts have been added to the list to request from the server via "nbd.add_meta_context". The server is not obligated to honor all of the requests; to see what it actually supports, see "nbd.can_meta_context". ''' self._check_not_closed() return libnbdmod.get_nr_meta_contexts(self._o) def get_meta_context(self, i): u'''▶ return the i'th meta context request During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as "base:allocation") which describe information returned by the "nbd.block_status_64" command (for "base:allocation" this is whether blocks of data are allocated, zero or sparse). This command returns the i'th meta context request, as added by "nbd.add_meta_context", and bounded by "nbd.get_nr_meta_contexts". ''' self._check_not_closed() return libnbdmod.get_meta_context(self._o, i) def clear_meta_contexts(self): u'''▶ reset the list of requested meta contexts During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as "base:allocation") which describe information returned by the "nbd.block_status_64" command (for "base:allocation" this is whether blocks of data are allocated, zero or sparse). This command resets the list of meta contexts to request back to an empty list, for re-population by further use of "nbd.add_meta_context". It is primarily useful when option negotiation mode is selected (see "nbd.set_opt_mode"), for altering the list of attempted contexts between subsequent export queries. ''' self._check_not_closed() return libnbdmod.clear_meta_contexts(self._o) def set_uri_allow_transports(self, mask): u'''▶ set the allowed transports in NBD URIs Set which transports are allowed to appear in NBD URIs. The default is to allow any transport. The "mask" parameter may contain any of the following flags ORed together: "ALLOW_TRANSPORT_TCP" = 0x1 "ALLOW_TRANSPORT_UNIX" = 0x2 "ALLOW_TRANSPORT_VSOCK" = 0x4 For convenience, the constant "ALLOW_TRANSPORT_MASK" is available to describe all transports recognized by this build of libnbd. A future version of the library may add new flags. ''' self._check_not_closed() return libnbdmod.set_uri_allow_transports(self._o, mask) def set_uri_allow_tls(self, tls): u'''▶ set the allowed TLS settings in NBD URIs Set which TLS settings are allowed to appear in NBD URIs. The default is to allow either non-TLS or TLS URIs. The "tls" parameter can be: "TLS_DISABLE" TLS URIs are not permitted, ie. a URI such as "nbds://..." will be rejected. "TLS_ALLOW" This is the default. TLS may be used or not, depending on whether the URI uses "nbds" or "nbd". "TLS_REQUIRE" TLS URIs are required. All URIs must use "nbds". ''' self._check_not_closed() return libnbdmod.set_uri_allow_tls(self._o, tls) def set_uri_allow_local_file(self, allow): u'''▶ set the allowed transports in NBD URIs Allow NBD URIs to reference local files. This is *disabled* by default. Currently this setting only controls whether the "tls-psk-file" parameter in NBD URIs is allowed. ''' self._check_not_closed() return libnbdmod.set_uri_allow_local_file(self._o, allow) def connect_uri(self, uri): u'''▶ connect to NBD URI Connect (synchronously) to an NBD server and export by specifying the NBD URI. NBD URIs are a standard way to specify a network block device endpoint, using a syntax like "nbd://example.com" which is convenient, well defined and future proof. This call works by parsing the URI parameter and calling "nbd.set_export_name" and "nbd.set_tls" and other calls as needed, followed by "nbd.connect_tcp", "nbd.connect_unix" or "nbd.connect_vsock". This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but "nbd.set_opt_mode" can be used for manual control over option negotiation performed before transmission phase. Example URIs supported "nbd://example.com" Connect over TCP, unencrypted, to "example.com" port 10809. "nbds://example.com" Connect over TCP with TLS, to "example.com" port 10809. If the server does not support TLS then this will fail. "nbd+unix:///foo?socket=/tmp/nbd.sock" Connect over the Unix domain socket /tmp/nbd.sock to an NBD server running locally. The export name is set to "foo" (note without any leading "/" character). "nbds+unix://alice@/?socket=/tmp/nbd.sock&tls-certificat es=certs" Connect over a Unix domain socket, enabling TLS and setting the path to a directory containing certificates and keys. "nbd+vsock:///" In this scenario libnbd is running in a virtual machine. Connect over "AF_VSOCK" to an NBD server running on the hypervisor. Supported URI formats The following schemes are supported in the current version of libnbd: "nbd:" Connect over TCP without using TLS. "nbds:" Connect over TCP. TLS is required and the connection will fail if the server does not support TLS. "nbd+unix:" "nbds+unix:" Connect over a Unix domain socket, without or with TLS respectively. The "socket" parameter is required. "nbd+vsock:" "nbds+vsock:" Connect over the "AF_VSOCK" transport, without or with TLS respectively. You can use "nbd.supports_vsock" to see if this build of libnbd supports "AF_VSOCK". The authority part of the URI ("[username@][servername][:port]") is parsed depending on the transport. For TCP it specifies the server to connect to and optional port number. For "+unix" it should not be present. For "+vsock" the server name is the numeric CID (eg. 2 to connect to the host), and the optional port number may be present. If the "username" is present it is used for TLS authentication. For all transports, an export name may be present, parsed in accordance with the NBD URI specification. Finally the query part of the URI can contain: socket=SOCKET Specifies the Unix domain socket to connect on. Must be present for the "+unix" transport and must not be present for the other transports. tls-certificates=DIR Set the certificates directory. See "nbd.set_tls_certificates". Note this is not allowed by default - see next section. tls-psk-file=PSKFILE Set the PSK file. See "nbd.set_tls_psk_file". Note this is not allowed by default - see next section. tls-verify-peer=false Do not verify the server certificate. See "nbd.set_tls_verify_peer". The default is "true". Disable URI features For security reasons you might want to disable certain URI features. Pre-filtering URIs is error-prone and should not be attempted. Instead use the libnbd APIs below to control what can appear in URIs. Note you must call these functions on the same handle before calling "nbd.connect_uri" or "nbd.aio_connect_uri". TCP, Unix domain socket or "AF_VSOCK" transports Default: all allowed To select which transports are allowed call "nbd.set_uri_allow_transports". TLS Default: both non-TLS and TLS connections allowed To force TLS off or on in URIs call "nbd.set_uri_allow_tls". Connect to Unix domain socket in the local filesystem Default: allowed To prevent this you must disable the "+unix" transport using "nbd.set_uri_allow_transports". Read from local files Default: denied To allow URIs to contain references to local files (eg. for parameters like "tls-psk-file") call "nbd.set_uri_allow_local_file". Overriding the export name It is possible to override the export name portion of a URI by using "nbd.set_opt_mode" to enable option mode, then using "nbd.set_export_name" and "nbd.opt_go" as part of subsequent negotiation. Optional features This call will fail if libnbd was not compiled with libxml2; you can test whether this is the case with "nbd.supports_uri". Support for URIs that require TLS will fail if libnbd was not compiled with gnutls; you can test whether this is the case with "nbd.supports_tls". Constructing a URI from an existing connection See "nbd.get_uri". ''' self._check_not_closed() return libnbdmod.connect_uri(self._o, uri) def connect_unix(self, unixsocket): u'''▶ connect to NBD server over a Unix domain socket Connect (synchronously) over the named Unix domain socket ("unixsocket") to an NBD server running on the same machine. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but "nbd.set_opt_mode" can be used for manual control over option negotiation performed before transmission phase. ''' self._check_not_closed() return libnbdmod.connect_unix(self._o, unixsocket) def connect_vsock(self, cid, port): u'''▶ connect to NBD server over AF_VSOCK protocol Connect (synchronously) over the "AF_VSOCK" protocol from a virtual machine to an NBD server, usually running on the host. The "cid" and "port" parameters specify the server address. Usually "cid" should be 2 (to connect to the host), and "port" might be 10809 or another port number assigned to you by the host administrator. Not all systems support "AF_VSOCK"; to determine if libnbd was built on a system with vsock support, see "nbd.supports_vsock". This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but "nbd.set_opt_mode" can be used for manual control over option negotiation performed before transmission phase. ''' self._check_not_closed() return libnbdmod.connect_vsock(self._o, cid, port) def connect_tcp(self, hostname, port): u'''▶ connect to NBD server over a TCP port Connect (synchronously) to the NBD server listening on "hostname:port". The "port" may be a port name such as "nbd", or it may be a port number as a string such as "10809". This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but "nbd.set_opt_mode" can be used for manual control over option negotiation performed before transmission phase. ''' self._check_not_closed() return libnbdmod.connect_tcp(self._o, hostname, port) def connect_socket(self, sock): u'''▶ connect directly to a connected socket Pass a connected socket "sock" through which libnbd will talk to the NBD server. The caller is responsible for creating and connecting this socket by some method, before passing it to libnbd. If this call returns without error then socket ownership is passed to libnbd. Libnbd will close the socket when the handle is closed. The caller must not use the socket in any way. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but "nbd.set_opt_mode" can be used for manual control over option negotiation performed before transmission phase. ''' self._check_not_closed() return libnbdmod.connect_socket(self._o, sock) def connect_command(self, argv): u'''▶ connect to NBD server command Run the command as a subprocess and connect to it over stdin/stdout. This is for use with NBD servers which can behave like inetd clients, such as nbdkit(1) using the *-s*/*--single* flag, and nbd-server(1) with port number set to 0. To run qemu-nbd(1), use "nbd.connect_systemd_socket_activation" instead. Subprocess Libnbd will fork the "argv" command and pass the NBD socket to it using file descriptors 0 and 1 (stdin/stdout): ┌─────────┬─────────┐ ┌────────────────┐ │ program │ libnbd │ │ NBD server │ │ │ │ │ (argv) │ │ │ socket ╍╍╍╍╍╍╍╍▶ stdin/stdout │ └─────────┴─────────┘ └────────────────┘ When the NBD handle is closed the server subprocess is killed. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but "nbd.set_opt_mode" can be used for manual control over option negotiation performed before transmission phase. ''' self._check_not_closed() return libnbdmod.connect_command(self._o, argv) def connect_systemd_socket_activation(self, argv): u'''▶ connect using systemd socket activation Run the command as a subprocess and connect to it using systemd socket activation. This is especially useful for running qemu-nbd(1) as a subprocess of libnbd, for example to use it to open qcow2 files. To run nbdkit as a subprocess, this function can be used, or "nbd.connect_command". To run nbd-server(1) as a subprocess, this function cannot be used, you must use "nbd.connect_command". Socket activation Libnbd will fork the "argv" command and pass an NBD socket to it using special "LISTEN_*" environment variables (as defined by the systemd socket activation protocol). ┌─────────┬─────────┐ ┌───────────────┐ │ program │ libnbd │ │ qemu-nbd or │ │ │ │ │ other server │ │ │ socket ╍╍╍╍╍╍╍╍▶ │ └─────────┴─────────┘ └───────────────┘ When the NBD handle is closed the server subprocess is killed. Socket name The socket activation protocol lets you optionally give the socket a name. If used, the name is passed to the NBD server using the "LISTEN_FDNAMES" environment variable. To provide a socket name, call "nbd.set_socket_activation_name" before calling the connect function. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but "nbd.set_opt_mode" can be used for manual control over option negotiation performed before transmission phase. ''' self._check_not_closed() return libnbdmod.connect_systemd_socket_activation(self._o, argv) def set_socket_activation_name(self, socket_name): u'''▶ set the socket activation name When running an NBD server using "nbd.connect_systemd_socket_activation" you can optionally name the socket. Call this function before connecting to the server. Some servers such as qemu-storage-daemon(1) can use this information to associate the socket with a name used on the command line, but most servers will ignore it. The name is passed through the "LISTEN_FDNAMES" environment variable. The parameter "socket_name" can be a short alphanumeric string. If it is set to the empty string (also the default when the handle is created) then the name "unknown" will be seen by the server. ''' self._check_not_closed() return libnbdmod.set_socket_activation_name(self._o, socket_name) def get_socket_activation_name(self): u'''▶ get the socket activation name Return the socket name used when you call "nbd.connect_systemd_socket_activation" on the same handle. By default this will return the empty string meaning that the server will see the name "unknown". ''' self._check_not_closed() return libnbdmod.get_socket_activation_name(self._o) def is_read_only(self): u'''▶ is the NBD export read-only? Returns true if the NBD export is read-only; writes and write-like operations will fail. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.is_read_only(self._o) def can_flush(self): u'''▶ does the server support the flush command? Returns true if the server supports the flush command (see "nbd.flush", "nbd.aio_flush"). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_flush(self._o) def can_fua(self): u'''▶ does the server support the FUA flag? Returns true if the server supports the FUA flag on certain commands (see "nbd.pwrite"). This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_fua(self._o) def is_rotational(self): u'''▶ is the NBD disk rotational (like a disk)? Returns true if the disk exposed over NBD is rotational (like a traditional floppy or hard disk). Returns false if the disk has no penalty for random access (like an SSD or RAM disk). This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.is_rotational(self._o) def can_trim(self): u'''▶ does the server support the trim command? Returns true if the server supports the trim command (see "nbd.trim", "nbd.aio_trim"). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_trim(self._o) def can_zero(self): u'''▶ does the server support the zero command? Returns true if the server supports the zero command (see "nbd.zero", "nbd.aio_zero"). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_zero(self._o) def can_fast_zero(self): u'''▶ does the server support the fast zero flag? Returns true if the server supports the use of the "CMD_FLAG_FAST_ZERO" flag to the zero command (see "nbd.zero", "nbd.aio_zero"). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_fast_zero(self._o) def can_block_status_payload(self): u'''▶ does the server support the block status payload flag? Returns true if the server supports the use of the "CMD_FLAG_PAYLOAD_LEN" flag to allow filtering of the block status command (see "nbd.block_status_filter"). Returns false if the server does not. Note that this will never return true if "nbd.get_extended_headers_negotiated" is false. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_block_status_payload(self._o) def can_df(self): u'''▶ does the server support the don't fragment flag to pread? Returns true if the server supports structured reads with an ability to request a non-fragmented read (see "nbd.pread_structured", "nbd.aio_pread_structured"). Returns false if the server either lacks structured reads or if it does not support a non-fragmented read request. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_df(self._o) def can_multi_conn(self): u'''▶ does the server support multi-conn? Returns true if the server supports multi-conn. Returns false if the server does not. It is not safe to open multiple handles connecting to the same server if you will write to the server and the server does not advertise multi-conn support. The safe way to check for this is to open one connection, check this flag is true, then open further connections as required. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_multi_conn(self._o) def can_cache(self): u'''▶ does the server support the cache command? Returns true if the server supports the cache command (see "nbd.cache", "nbd.aio_cache"). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_cache(self._o) def can_meta_context(self, metacontext): u'''▶ does the server support a specific meta context? Returns true if the server supports the given meta context (see "nbd.add_meta_context"). Returns false if the server does not. It is possible for this command to fail if meta contexts were requested but there is a missing or failed attempt at NBD_OPT_SET_META_CONTEXT during option negotiation. If the server supports block status filtering (see "nbd.can_block_status_payload", this function must return true for any filter name passed to "nbd.block_status_filter". The single parameter is the name of the metadata context, for example "CONTEXT_BASE_ALLOCATION". includes defined constants for well-known namespace contexts beginning with "CONTEXT_", but you are free to pass in other contexts. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.can_meta_context(self._o, metacontext) def get_protocol(self): u'''▶ return the NBD protocol variant Return the NBD protocol variant in use on the connection. At the moment this returns one of the strings "oldstyle", "newstyle" or "newstyle-fixed". Other strings might be returned in the future. Most modern NBD servers use "newstyle-fixed". This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.get_protocol(self._o) def get_size(self): u'''▶ return the export size Returns the size in bytes of the NBD export. Note that this call fails with "EOVERFLOW" for an unlikely server that advertises a size which cannot fit in a 64-bit signed integer. nbdinfo(1) *--size* option is a way to access this API from shell scripts. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.get_size(self._o) def get_block_size(self, size_type): u'''▶ return a specific server block size constraint Returns a specific block size constraint advertised by the server. If zero is returned it means the server did not advertise a constraint. Constraints are hints. Servers differ in their behaviour as to whether they enforce constraints or not. The "size_type" parameter selects which constraint to read. It can be one of: "SIZE_MINIMUM" = 0 If non-zero, this will be a power of 2 between 1 and 64k; any client request that is not aligned in length or offset to this size is likely to fail with "EINVAL". The image size will generally also be a multiple of this value (if not, the final few bytes are inaccessible while obeying alignment constraints). If zero (meaning no information was returned by the server), it is safest to assume a minimum block size of 512, although many servers support a minimum block size of 1. If the server provides a constraint, then libnbd defaults to honoring that constraint client-side unless "STRICT_ALIGN" is cleared in nbd_set_strict_mode(3). "SIZE_PREFERRED" = 1 If non-zero, this is a power of 2 representing the preferred size for efficient I/O. Smaller requests may incur overhead such as read-modify-write cycles that will not be present when using I/O that is a multiple of this value. This value may be larger than the size of the export. If zero (meaning no information was returned by the server), using 4k as a preferred block size tends to give decent performance. "SIZE_MAXIMUM" = 2 If non-zero, this represents the maximum length that the server is willing to handle during "nbd.pread" or "nbd.pwrite". Other functions like "nbd.zero" may still be able to use larger sizes. Note that this function returns what the server advertised, but libnbd itself imposes a maximum of 64M. If zero (meaning no information was returned by the server), some NBD servers will abruptly disconnect if a transaction sends or receives more than 32M of data. "SIZE_PAYLOAD" = 3 This value is not advertised by the server, but rather represents the maximum outgoing payload size for a given connection that libnbd will enforce unless "STRICT_PAYLOAD" is cleared in nbd_set_strict_mode(3). It is always non-zero: never smaller than 1M, never larger than 64M, and matches "SIZE_MAXIMUM" when possible. Future NBD extensions may result in additional "size_type" values. Note that by default, libnbd requests all available block sizes, but that a server may differ in what sizes it chooses to report if "nbd.set_request_block_size" alters whether the client requests sizes. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. ''' self._check_not_closed() return libnbdmod.get_block_size(self._o, size_type) def pread(self, count, offset, flags=0): u'''▶ read from the NBD server Issue a read command to the NBD server for the range starting at "offset" and ending at "offset" + "count" - 1. NBD can only read all or nothing using this call. The call returns when the data has been read fully into "buf" or there is an error. See also "nbd.pread_structured", if finer visibility is required into the server's replies, or if you want to use "CMD_FLAG_DF". Note that libnbd currently enforces a maximum read buffer of 64MiB, even if the server would permit a larger buffer in a single transaction; attempts to exceed this will result in an "ERANGE" error. The server may enforce a smaller limit, which can be learned with "nbd.get_block_size". The "flags" parameter must be 0 for now (it exists for future NBD protocol extensions). Note that if this command fails, and "nbd.get_pread_initialize" returns true, then libnbd sanitized "buf", but it is unspecified whether the contents of "buf" will read as zero or as partial results from the server. If "nbd.get_pread_initialize" returns false, then libnbd did not sanitize "buf", and the contents are undefined on failure. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.pread(self._o, count, offset, flags) def pread_structured(self, count, offset, chunk, flags=0): u'''▶ read from the NBD server Issue a read command to the NBD server for the range starting at "offset" and ending at "offset" + "count" - 1. The server's response may be subdivided into chunks which may arrive out of order before reassembly into the original buffer; the "chunk" callback is used for notification after each chunk arrives, and may perform additional sanity checking on the server's reply. The callback cannot call "nbd_*" APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns -1, and no earlier error has been detected, then the overall read command will fail with any non-zero value stored into the callback's "error" parameter (with a default of "EPROTO"); but any further chunks will still invoke the callback. The "chunk" function is called once per chunk of data received, with the "user_data" passed to this function. The "subbuf" and "count" parameters represent the subset of the original buffer which has just been populated by results from the server (in C, "subbuf" always points within the original "buf"; but this guarantee may not extend to other language bindings). The "offset" parameter represents the absolute offset at which "subbuf" begins within the image (note that this is not the relative offset of "subbuf" within the original buffer "buf"). Changes to "error" on output are ignored unless the callback fails. The input meaning of the "error" parameter is controlled by the "status" parameter, which is one of "READ_DATA" = 1 "subbuf" was populated with "count" bytes of data. On input, "error" contains the errno value of any earlier detected error, or zero. "READ_HOLE" = 2 "subbuf" represents a hole, and contains "count" NUL bytes. On input, "error" contains the errno value of any earlier detected error, or zero. "READ_ERROR" = 3 "count" is 0, so "subbuf" is unusable. On input, "error" contains the errno value reported by the server as occurring while reading that "offset", regardless if any earlier error has been detected. Future NBD extensions may permit other values for "status", but those will not be returned to a client that has not opted in to requesting such extensions. If the server is non-compliant, it is possible for the "chunk" function to be called more times than you expect or with "count" 0 for "READ_DATA" or "READ_HOLE". It is also possible that the "chunk" function is not called at all (in particular, "READ_ERROR" is used only when an error is associated with a particular offset, and not when the server reports a generic error), but you are guaranteed that the callback was called at least once if the overall read succeeds. Libnbd does not validate that the server obeyed the requirement that a read call must not have overlapping chunks and must not succeed without enough chunks to cover the entire request. Note that libnbd currently enforces a maximum read buffer of 64MiB, even if the server would permit a larger buffer in a single transaction; attempts to exceed this will result in an "ERANGE" error. The server may enforce a smaller limit, which can be learned with "nbd.get_block_size". The "flags" parameter may be 0 for no flags, or may contain "CMD_FLAG_DF" meaning that the server should not reply with more than one fragment (if that is supported - some servers cannot do this, see "nbd.can_df"). Libnbd does not validate that the server actually obeys the flag. Note that if this command fails, and "nbd.get_pread_initialize" returns true, then libnbd sanitized "buf", but it is unspecified whether the contents of "buf" will read as zero or as partial results from the server. If "nbd.get_pread_initialize" returns false, then libnbd did not sanitize "buf", and the contents are undefined on failure. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.pread_structured(self._o, count, offset, chunk, flags) def pwrite(self, buf, offset, flags=0): u'''▶ write to the NBD server Issue a write command to the NBD server, writing the data in "buf" to the range starting at "offset" and ending at "offset" + "count" - 1. NBD can only write all or nothing using this call. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if "nbd.is_read_only" is true. Note that libnbd defaults to enforcing a maximum write buffer of the lesser of 64MiB or any maximum payload size advertised by the server; attempts to exceed this will generally result in a client-side "ERANGE" error, rather than a server-side disconnection. The actual limit can be learned with "nbd.get_block_size". The "flags" parameter may be 0 for no flags, or may contain "CMD_FLAG_FUA" meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see "nbd.can_fua"). For convenience, unless nbd_set_strict_flags(3) was used to disable "STRICT_AUTO_FLAG", libnbd ignores the presence or absence of the flag "CMD_FLAG_PAYLOAD_LEN" in "flags", while correctly using the flag over the wire according to whether extended headers were negotiated. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.pwrite(self._o, buf, offset, flags) def shutdown(self, flags=0): u'''▶ disconnect from the NBD server Issue the disconnect command to the NBD server. This is a nice way to tell the server we are going away, but from the client's point of view has no advantage over abruptly closing the connection (see "nbd.close"). This function works whether or not the handle is ready for transmission of commands. If more fine-grained control is needed, see "nbd.aio_opt_abort" and "nbd.aio_disconnect". The "flags" argument is a bitmask, including zero or more of the following shutdown flags: "SHUTDOWN_ABANDON_PENDING" = 0x10000 If there are any pending requests which have not yet been sent to the server (see "nbd.aio_in_flight"), abandon them without sending them to the server, rather than the usual practice of issuing those commands before informing the server of the intent to disconnect. For convenience, the constant "SHUTDOWN_MASK" is available to describe all shutdown flags recognized by this build of libnbd. A future version of the library may add new flags. ''' self._check_not_closed() return libnbdmod.shutdown(self._o, flags) def flush(self, flags=0): u'''▶ send flush command to the NBD server Issue the flush command to the NBD server. The function should return when all write commands which have completed have been committed to permanent storage on the server. Note this will generally return an error if "nbd.can_flush" is false. The "flags" parameter must be 0 for now (it exists for future NBD protocol extensions). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.flush(self._o, flags) def trim(self, count, offset, flags=0): u'''▶ send trim command to the NBD server Issue a trim command to the NBD server, which if supported by the server causes a hole to be punched in the backing store starting at "offset" and ending at "offset" + "count" - 1. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if "nbd.can_trim" is false or "nbd.is_read_only" is true. Note that not all servers can support a "count" of 4GiB or larger; "nbd.get_extended_headers_negotiated" indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum trim size, although a future extension may add a constraint visible in "nbd.get_block_size". The "flags" parameter may be 0 for no flags, or may contain "CMD_FLAG_FUA" meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see "nbd.can_fua"). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.trim(self._o, count, offset, flags) def cache(self, count, offset, flags=0): u'''▶ send cache (prefetch) command to the NBD server Issue the cache (prefetch) command to the NBD server, which if supported by the server causes data to be prefetched into faster storage by the server, speeding up a subsequent "nbd.pread" call. The server can also silently ignore this command. Note this will generally return an error if "nbd.can_cache" is false. Note that not all servers can support a "count" of 4GiB or larger; "nbd.get_extended_headers_negotiated" indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum cache size, although a future extension may add a constraint visible in "nbd.get_block_size". The "flags" parameter must be 0 for now (it exists for future NBD protocol extensions). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.cache(self._o, count, offset, flags) def zero(self, count, offset, flags=0): u'''▶ send write zeroes command to the NBD server Issue a write zeroes command to the NBD server, which if supported by the server causes a zeroes to be written efficiently starting at "offset" and ending at "offset" + "count" - 1. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if "nbd.can_zero" is false or "nbd.is_read_only" is true. Note that not all servers can support a "count" of 4GiB or larger; "nbd.get_extended_headers_negotiated" indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum zero size, although a future extension may add a constraint visible in "nbd.get_block_size". Also, some servers may permit a larger zero request only when the "CMD_FLAG_FAST_ZERO" is in use. The "flags" parameter may be 0 for no flags, or may contain "CMD_FLAG_FUA" meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see "nbd.can_fua"), "CMD_FLAG_NO_HOLE" meaning that the server should favor writing actual allocated zeroes over punching a hole, and/or "CMD_FLAG_FAST_ZERO" meaning that the server must fail quickly if writing zeroes is no faster than a normal write (if that is supported - some servers cannot do this, see "nbd.can_fast_zero"). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.zero(self._o, count, offset, flags) def block_status(self, count, offset, extent, flags=0): u'''▶ send block status command, with 32-bit callback Issue the block status command to the NBD server. If supported by the server, this causes metadata context information about blocks beginning from the specified offset to be returned. The "count" parameter is a hint: the server may choose to return less status, or the final block may extend beyond the requested range. If multiple contexts are supported, the number of blocks and cumulative length of those blocks need not be identical between contexts. Note that not all servers can support a "count" of 4GiB or larger; "nbd.get_extended_headers_negotiated" indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum block status size, although a future extension may add a constraint visible in "nbd.get_block_size". Furthermore, this function is inherently limited to 32-bit values. If the server replies with a larger extent, the length of that extent will be truncated to just below 32 bits and any further extents from the server will be ignored. If the server replies with a status value larger than 32 bits (only possible when extended headers are in use), the callback function will be passed an "EOVERFLOW" error. To get the full extent information from a server that supports 64-bit extents, you must use "nbd.block_status_64". Depending on which metadata contexts were enabled before connecting (see "nbd.add_meta_context") and which are supported by the server (see "nbd.can_meta_context") this call returns information about extents by calling back to the "extent" function. The callback cannot call "nbd_*" APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns -1, and no earlier error has been detected, then the overall block status command will fail with any non-zero value stored into the callback's "error" parameter (with a default of "EPROTO"); but any further contexts will still invoke the callback. The "extent" function is called once per type of metadata available, with the "user_data" passed to this function. The "metacontext" parameter is a string such as "base:allocation". The "entries" array is an array of pairs of integers with the first entry in each pair being the length (in bytes) of the block and the second entry being a status/flags field which is specific to the metadata context. The number of pairs passed to the function is "nr_entries/2". The NBD protocol document in the section about "NBD_REPLY_TYPE_BLOCK_STATUS" describes the meaning of this array; for contexts known to libnbd, contains constants beginning with "STATE_" that may help decipher the values. On entry to the callback, the "error" parameter contains the errno value of any previously detected error, but even if an earlier error was detected, the current "metacontext" and "entries" are valid. It is possible for the extent function to be called more times than you expect (if the server is buggy), so always check the "metacontext" field to ensure you are receiving the data you expect. It is also possible that the extent function is not called at all, even for metadata contexts that you requested. This indicates either that the server doesn't support the context or for some other reason cannot return the data. The "flags" parameter may be 0 for no flags, or may contain "CMD_FLAG_REQ_ONE" meaning that the server should return only one extent per metadata context where that extent does not exceed "count" bytes; however, libnbd does not validate that the server obeyed the flag. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.block_status(self._o, count, offset, extent, flags) def block_status_64(self, count, offset, extent64, flags=0): u'''▶ send block status command, with 64-bit callback Issue the block status command to the NBD server. If supported by the server, this causes metadata context information about blocks beginning from the specified offset to be returned. The "count" parameter is a hint: the server may choose to return less status, or the final block may extend beyond the requested range. When multiple contexts are supported, the number of blocks and cumulative length of those blocks need not be identical between contexts; this command generally returns the status of all negotiated contexts, while some servers also support a filtered request (see "nbd.can_block_status_payload", "nbd.block_status_filter"). Note that not all servers can support a "count" of 4GiB or larger; "nbd.get_extended_headers_negotiated" indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum block status size, although a future extension may add a constraint visible in "nbd.get_block_size". Depending on which metadata contexts were enabled before connecting (see "nbd.add_meta_context") and which are supported by the server (see "nbd.can_meta_context") this call returns information about extents by calling back to the "extent64" function. The callback cannot call "nbd_*" APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns -1, and no earlier error has been detected, then the overall block status command will fail with any non-zero value stored into the callback's "error" parameter (with a default of "EPROTO"); but any further contexts will still invoke the callback. The "extent64" function is called once per type of metadata available, with the "user_data" passed to this function. The "metacontext" parameter is a string such as "base:allocation". The "entries" array is an array of nbd_extent structs, containing length (in bytes) of the block and a status/flags field which is specific to the metadata context. The number of array entries passed to the function is "nr_entries". The NBD protocol document in the section about "NBD_REPLY_TYPE_BLOCK_STATUS" describes the meaning of this array; for contexts known to libnbd, contains constants beginning with "STATE_" that may help decipher the values. On entry to the callback, the "error" parameter contains the errno value of any previously detected error. It is possible for the extent function to be called more times than you expect (if the server is buggy), so always check the "metacontext" field to ensure you are receiving the data you expect. It is also possible that the extent function is not called at all, even for metadata contexts that you requested. This indicates either that the server doesn't support the context or for some other reason cannot return the data. The "flags" parameter may be 0 for no flags, or may contain "CMD_FLAG_REQ_ONE" meaning that the server should return only one extent per metadata context where that extent does not exceed "count" bytes; however, libnbd does not validate that the server obeyed the flag. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.block_status_64(self._o, count, offset, extent64, flags) def block_status_filter(self, count, offset, contexts, extent64, flags=0): u'''▶ send filtered block status command, with 64-bit callback Issue a filtered block status command to the NBD server. If supported by the server (see "nbd.can_block_status_payload"), this causes metadata context information about blocks beginning from the specified offset to be returned, and with the result limited to just the contexts specified in "filter". Note that all strings in "filter" must be supported by "nbd.can_meta_context". All other parameters to this function have the same semantics as in "nbd.block_status_64"; except that for convenience, unless was used to disable "STRICT_AUTO_FLAG", libnbd ignores the presence or absence of the flag "CMD_FLAG_PAYLOAD_LEN" in "flags", while correctly using the flag over the wire. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.block_status_filter(self._o, count, offset, contexts, extent64, flags) def poll(self, timeout): u'''▶ poll the handle once This is a simple implementation of poll(2) which is used internally by synchronous API calls. On success, it returns 0 if the "timeout" (in milliseconds) occurs, or 1 if the poll completed and the state machine progressed. Set "timeout" to -1 to block indefinitely (but be careful that eventual action is actually expected - for example, if the connection is established but there are no commands in flight, using an infinite timeout will permanently block). This function is mainly useful as an example of how you might integrate libnbd with your own main loop, rather than being intended as something you would use. ''' self._check_not_closed() return libnbdmod.poll(self._o, timeout) def poll2(self, fd, timeout): u'''▶ poll the handle once, with fd This is the same as "nbd.poll", but an additional file descriptor parameter is passed. The additional fd is also polled (using "POLLIN"). One use for this is to wait for an eventfd(2). ''' self._check_not_closed() return libnbdmod.poll2(self._o, fd, timeout) def aio_connect(self, addr): u'''▶ connect to the NBD server Begin connecting to the NBD server. The "addr" and "addrlen" parameters specify the address of the socket to connect to. You can check if the connection attempt is still underway by calling "nbd.aio_is_connecting". If "nbd.set_opt_mode" is enabled, the connection is ready for manual option negotiation once "nbd.aio_is_negotiating" returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once "nbd.aio_is_ready" returns true. ''' self._check_not_closed() return libnbdmod.aio_connect(self._o, addr) def aio_connect_uri(self, uri): u'''▶ connect to an NBD URI Begin connecting to the NBD URI "uri". Parameters behave as documented in "nbd.connect_uri". You can check if the connection attempt is still underway by calling "nbd.aio_is_connecting". If "nbd.set_opt_mode" is enabled, the connection is ready for manual option negotiation once "nbd.aio_is_negotiating" returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once "nbd.aio_is_ready" returns true. ''' self._check_not_closed() return libnbdmod.aio_connect_uri(self._o, uri) def aio_connect_unix(self, unixsocket): u'''▶ connect to the NBD server over a Unix domain socket Begin connecting to the NBD server over Unix domain socket ("unixsocket"). Parameters behave as documented in "nbd.connect_unix". You can check if the connection attempt is still underway by calling "nbd.aio_is_connecting". If "nbd.set_opt_mode" is enabled, the connection is ready for manual option negotiation once "nbd.aio_is_negotiating" returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once "nbd.aio_is_ready" returns true. ''' self._check_not_closed() return libnbdmod.aio_connect_unix(self._o, unixsocket) def aio_connect_vsock(self, cid, port): u'''▶ connect to the NBD server over AF_VSOCK socket Begin connecting to the NBD server over the "AF_VSOCK" protocol to the server "cid:port". Parameters behave as documented in "nbd.connect_vsock". You can check if the connection attempt is still underway by calling "nbd.aio_is_connecting". If "nbd.set_opt_mode" is enabled, the connection is ready for manual option negotiation once "nbd.aio_is_negotiating" returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once "nbd.aio_is_ready" returns true. ''' self._check_not_closed() return libnbdmod.aio_connect_vsock(self._o, cid, port) def aio_connect_tcp(self, hostname, port): u'''▶ connect to the NBD server over a TCP port Begin connecting to the NBD server listening on "hostname:port". Parameters behave as documented in "nbd.connect_tcp". You can check if the connection attempt is still underway by calling "nbd.aio_is_connecting". If "nbd.set_opt_mode" is enabled, the connection is ready for manual option negotiation once "nbd.aio_is_negotiating" returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once "nbd.aio_is_ready" returns true. ''' self._check_not_closed() return libnbdmod.aio_connect_tcp(self._o, hostname, port) def aio_connect_socket(self, sock): u'''▶ connect directly to a connected socket Begin connecting to the connected socket "fd". Parameters behave as documented in "nbd.connect_socket". You can check if the connection attempt is still underway by calling "nbd.aio_is_connecting". If "nbd.set_opt_mode" is enabled, the connection is ready for manual option negotiation once "nbd.aio_is_negotiating" returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once "nbd.aio_is_ready" returns true. ''' self._check_not_closed() return libnbdmod.aio_connect_socket(self._o, sock) def aio_connect_command(self, argv): u'''▶ connect to the NBD server Run the command as a subprocess and begin connecting to it over stdin/stdout. Parameters behave as documented in "nbd.connect_command". You can check if the connection attempt is still underway by calling "nbd.aio_is_connecting". If "nbd.set_opt_mode" is enabled, the connection is ready for manual option negotiation once "nbd.aio_is_negotiating" returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once "nbd.aio_is_ready" returns true. ''' self._check_not_closed() return libnbdmod.aio_connect_command(self._o, argv) def aio_connect_systemd_socket_activation(self, argv): u'''▶ connect using systemd socket activation Run the command as a subprocess and begin connecting to it using systemd socket activation. Parameters behave as documented in "nbd.connect_systemd_socket_activation". You can check if the connection attempt is still underway by calling "nbd.aio_is_connecting". If "nbd.set_opt_mode" is enabled, the connection is ready for manual option negotiation once "nbd.aio_is_negotiating" returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once "nbd.aio_is_ready" returns true. ''' self._check_not_closed() return libnbdmod.aio_connect_systemd_socket_activation(self._o, argv) def aio_opt_go(self, completion=None): u'''▶ end negotiation and move on to using an export Request that the server finish negotiation and move on to serving the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri". This can only be used if "nbd.set_opt_mode" enabled option mode. To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that directly detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback; however it is also possible to indirectly detect an error when "nbd.aio_is_negotiating" returns true. ''' self._check_not_closed() return libnbdmod.aio_opt_go(self._o, completion) def aio_opt_abort(self): u'''▶ end negotiation and close the connection Request that the server finish negotiation, gracefully if possible, then close the connection. This can only be used if "nbd.set_opt_mode" enabled option mode. To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. ''' self._check_not_closed() return libnbdmod.aio_opt_abort(self._o) def aio_opt_starttls(self, completion=None): u'''▶ request the server to initiate TLS Request that the server initiate a secure TLS connection, by sending "NBD_OPT_STARTTLS". This behaves like the synchronous counterpart "nbd.opt_starttls", except that it does not wait for the server's response. To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. ''' self._check_not_closed() return libnbdmod.aio_opt_starttls(self._o, completion) def aio_opt_extended_headers(self, completion=None): u'''▶ request the server to enable extended headers Request that the server use extended headers, by sending "NBD_OPT_EXTENDED_HEADERS". This behaves like the synchronous counterpart "nbd.opt_extended_headers", except that it does not wait for the server's response. To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. ''' self._check_not_closed() return libnbdmod.aio_opt_extended_headers(self._o, completion) def aio_opt_structured_reply(self, completion=None): u'''▶ request the server to enable structured replies Request that the server use structured replies, by sending "NBD_OPT_STRUCTURED_REPLY". This behaves like the synchronous counterpart "nbd.opt_structured_reply", except that it does not wait for the server's response. To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. ''' self._check_not_closed() return libnbdmod.aio_opt_structured_reply(self._o, completion) def aio_opt_list(self, list, completion=None): u'''▶ request the server to list all exports during negotiation Request that the server list all exports that it supports. This can only be used if "nbd.set_opt_mode" enabled option mode. To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. ''' self._check_not_closed() return libnbdmod.aio_opt_list(self._o, list, completion) def aio_opt_info(self, completion=None): u'''▶ request the server for information about an export Request that the server supply information about the export name previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri". This can only be used if "nbd.set_opt_mode" enabled option mode. To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. ''' self._check_not_closed() return libnbdmod.aio_opt_info(self._o, completion) def aio_opt_list_meta_context(self, context, completion=None): u'''▶ request list of available meta contexts, using implicit query Request that the server list available meta contexts associated with the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri", and with a list of queries from prior calls to "nbd.add_meta_context" (see "nbd.aio_opt_list_meta_context_queries" if you want to supply an explicit query list instead). This can only be used if "nbd.set_opt_mode" enabled option mode. To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. ''' self._check_not_closed() return libnbdmod.aio_opt_list_meta_context(self._o, context, completion) def aio_opt_list_meta_context_queries(self, queries, context, completion=None): u'''▶ request list of available meta contexts, using explicit query Request that the server list available meta contexts associated with the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri", and with an explicit list of queries provided as a parameter (see "nbd.aio_opt_list_meta_context" if you want to reuse an implicit query list instead). This can only be used if "nbd.set_opt_mode" enabled option mode. To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. ''' self._check_not_closed() return libnbdmod.aio_opt_list_meta_context_queries(self._o, queries, context, completion) def aio_opt_set_meta_context(self, context, completion=None): u'''▶ select specific meta contexts, with implicit query list Request that the server supply all recognized meta contexts registered through prior calls to "nbd.add_meta_context", in conjunction with the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri". This can only be used if "nbd.set_opt_mode" enabled option mode. Normally, this function is redundant, as "nbd.opt_go" automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with "nbd.set_request_meta_context" to bypass the automatic context request normally performed by "nbd.opt_go". To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. ''' self._check_not_closed() return libnbdmod.aio_opt_set_meta_context(self._o, context, completion) def aio_opt_set_meta_context_queries(self, queries, context, completion=None): u'''▶ select specific meta contexts, with explicit query list Request that the server supply all recognized meta contexts passed in through "queries", in conjunction with the export previously specified by the most recent "nbd.set_export_name" or "nbd.connect_uri". This can only be used if "nbd.set_opt_mode" enabled option mode. Normally, this function is redundant, as "nbd.opt_go" automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with "nbd.set_request_meta_context" to bypass the automatic context request normally performed by "nbd.opt_go". To determine when the request completes, wait for "nbd.aio_is_connecting" to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. ''' self._check_not_closed() return libnbdmod.aio_opt_set_meta_context_queries(self._o, queries, context, completion) def aio_pread(self, buf, offset, completion=None, flags=0): u'''▶ read from the NBD server Issue a read command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Note that you must ensure "buf" is valid until the command has completed. Furthermore, if the "error" parameter to "completion_callback" is set or if "nbd.aio_command_completed" reports failure, and if "nbd.get_pread_initialize" returns true, then libnbd sanitized "buf", but it is unspecified whether the contents of "buf" will read as zero or as partial results from the server. If "nbd.get_pread_initialize" returns false, then libnbd did not sanitize "buf", and the contents are undefined on failure. Other parameters behave as documented in "nbd.pread". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_pread(self._o, buf, offset, completion, flags) def aio_pread_structured(self, buf, offset, chunk, completion=None, flags=0): u'''▶ read from the NBD server Issue a read command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Note that you must ensure "buf" is valid until the command has completed. Furthermore, if the "error" parameter to "completion_callback" is set or if "nbd.aio_command_completed" reports failure, and if "nbd.get_pread_initialize" returns true, then libnbd sanitized "buf", but it is unspecified whether the contents of "buf" will read as zero or as partial results from the server. If "nbd.get_pread_initialize" returns false, then libnbd did not sanitize "buf", and the contents are undefined on failure. Other parameters behave as documented in "nbd.pread_structured". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_pread_structured(self._o, buf, offset, chunk, completion, flags) def aio_pwrite(self, buf, offset, completion=None, flags=0): u'''▶ write to the NBD server Issue a write command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Note that you must ensure "buf" is valid until the command has completed. Other parameters behave as documented in "nbd.pwrite". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_pwrite(self._o, buf, offset, completion, flags) def aio_disconnect(self, flags=0): u'''▶ disconnect from the NBD server Issue the disconnect command to the NBD server. This is not a normal command because NBD servers are not obliged to send a reply. Instead you should wait for "nbd.aio_is_closed" to become true on the connection. Once this command is issued, you cannot issue any further commands. Although libnbd does not prevent you from issuing this command while still waiting on the replies to previous commands, the NBD protocol recommends that you wait until there are no other commands in flight (see "nbd.aio_in_flight"), to give the server a better chance at a clean shutdown. The "flags" parameter must be 0 for now (it exists for future NBD protocol extensions). There is no direct synchronous counterpart; however, "nbd.shutdown" will call this function if appropriate. ''' self._check_not_closed() return libnbdmod.aio_disconnect(self._o, flags) def aio_flush(self, completion=None, flags=0): u'''▶ send flush command to the NBD server Issue the flush command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in "nbd.flush". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_flush(self._o, completion, flags) def aio_trim(self, count, offset, completion=None, flags=0): u'''▶ send trim command to the NBD server Issue a trim command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in "nbd.trim". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_trim(self._o, count, offset, completion, flags) def aio_cache(self, count, offset, completion=None, flags=0): u'''▶ send cache (prefetch) command to the NBD server Issue the cache (prefetch) command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in "nbd.cache". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_cache(self._o, count, offset, completion, flags) def aio_zero(self, count, offset, completion=None, flags=0): u'''▶ send write zeroes command to the NBD server Issue a write zeroes command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in "nbd.zero". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_zero(self._o, count, offset, completion, flags) def aio_block_status(self, count, offset, extent, completion=None, flags=0): u'''▶ send block status command, with 32-bit callback Send the block status command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in "nbd.block_status". This function is inherently limited to 32-bit values. If the server replies with a larger extent, the length of that extent will be truncated to just below 32 bits and any further extents from the server will be ignored. If the server replies with a status value larger than 32 bits (only possible when extended headers are in use), the callback function will be passed an "EOVERFLOW" error. To get the full extent information from a server that supports 64-bit extents, you must use "nbd.aio_block_status_64". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_block_status(self._o, count, offset, extent, completion, flags) def aio_block_status_64(self, count, offset, extent64, completion=None, flags=0): u'''▶ send block status command, with 64-bit callback Send the block status command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in "nbd.block_status_64". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_block_status_64(self._o, count, offset, extent64, completion, flags) def aio_block_status_filter(self, count, offset, contexts, extent64, completion=None, flags=0): u'''▶ send filtered block status command to the NBD server Send a filtered block status command to the NBD server. To check if the command completed, call "nbd.aio_command_completed". Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in "nbd.block_status_filter". By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The "nbd.set_strict_mode" function can be used to alter which scenarios should await a server reply rather than failing fast. ''' self._check_not_closed() return libnbdmod.aio_block_status_filter(self._o, count, offset, contexts, extent64, completion, flags) def aio_get_fd(self): u'''▶ return file descriptor associated with this connection Return the underlying file descriptor associated with this connection. You can use this to check if the file descriptor is ready for reading or writing and call "nbd.aio_notify_read" or "nbd.aio_notify_write". See also "nbd.aio_get_direction". Do not do anything else with the file descriptor. ''' self._check_not_closed() return libnbdmod.aio_get_fd(self._o) def aio_get_direction(self): u'''▶ return the read or write direction Return the current direction of this connection, which means whether we are next expecting to read data from the server, write data to the server, or both. It returns 0 We are not expected to interact with the server file descriptor from the current state. It is not worth attempting to use poll(2); if the connection is not dead, then state machine progress must instead come from some other means such as "nbd.aio_connect". "AIO_DIRECTION_READ" = 1 We are expected next to read from the server. If using poll(2) you would set "events = POLLIN". If "revents" returns "POLLIN" or "POLLHUP" you would then call "nbd.aio_notify_read". Note that once libnbd reaches "nbd.aio_is_ready", this direction is returned even when there are no commands in flight (see "nbd.aio_in_flight"). In a single-threaded use of libnbd, it is not worth polling until after issuing a command, as otherwise the server will never wake up the poll. In a multi-threaded scenario, you can have one thread begin a polling loop prior to any commands, but any other thread that issues a command will need a way to kick the polling thread out of poll in case issuing the command changes the needed polling direction. Possible ways to do this include polling for activity on a pipe-to-self, or using pthread_kill(3) to send a signal that is masked except during ppoll(2). "AIO_DIRECTION_WRITE" = 2 We are expected next to write to the server. If using poll(2) you would set "events = POLLOUT". If "revents" returns "POLLOUT" you would then call "nbd.aio_notify_write". "AIO_DIRECTION_BOTH" = 3 We are expected next to either read or write to the server. If using poll(2) you would set "events = POLLIN|POLLOUT". If only one of "POLLIN" or "POLLOUT" is returned, then see above. However, if both are returned, it is better to call only "nbd.aio_notify_read", as processing the server's reply may change the state of the connection and invalidate the need to write more commands. ''' self._check_not_closed() return libnbdmod.aio_get_direction(self._o) def aio_notify_read(self): u'''▶ notify that the connection is readable Send notification to the state machine that the connection is readable. Typically this is called after your main loop has detected that the file descriptor associated with this connection is readable. ''' self._check_not_closed() return libnbdmod.aio_notify_read(self._o) def aio_notify_write(self): u'''▶ notify that the connection is writable Send notification to the state machine that the connection is writable. Typically this is called after your main loop has detected that the file descriptor associated with this connection is writable. ''' self._check_not_closed() return libnbdmod.aio_notify_write(self._o) def aio_is_created(self): u'''▶ check if the connection has just been created Return true if this connection has just been created. This is the state before the handle has started connecting to a server. In this state the handle can start to be connected by calling functions such as "nbd.aio_connect". ''' self._check_not_closed() return libnbdmod.aio_is_created(self._o) def aio_is_connecting(self): u'''▶ check if the connection is connecting or handshaking Return true if this connection is connecting to the server or in the process of handshaking and negotiating options which happens before the handle becomes ready to issue commands (see "nbd.aio_is_ready"). ''' self._check_not_closed() return libnbdmod.aio_is_connecting(self._o) def aio_is_negotiating(self): u'''▶ check if connection is ready to send handshake option Return true if this connection is ready to start another option negotiation command while handshaking with the server. An option command will move back to the connecting state (see "nbd.aio_is_connecting"). Note that this state cannot be reached unless requested by "nbd.set_opt_mode", and even then it only works with newstyle servers; an oldstyle server will skip straight to "nbd.aio_is_ready". ''' self._check_not_closed() return libnbdmod.aio_is_negotiating(self._o) def aio_is_ready(self): u'''▶ check if the connection is in the ready state Return true if this connection is connected to the NBD server, the handshake has completed, and the connection is idle or waiting for a reply. In this state the handle is ready to issue commands. ''' self._check_not_closed() return libnbdmod.aio_is_ready(self._o) def aio_is_processing(self): u'''▶ check if the connection is processing a command Return true if this connection is connected to the NBD server, the handshake has completed, and the connection is processing commands (either writing out a request or reading a reply). Note the ready state ("nbd.aio_is_ready") is not included. In the ready state commands may be *in flight* (the *server* is processing them), but libnbd is not processing them. ''' self._check_not_closed() return libnbdmod.aio_is_processing(self._o) def aio_is_dead(self): u'''▶ check if the connection is dead Return true if the connection has encountered a fatal error and is dead. In this state the handle may only be closed. There is no way to recover a handle from the dead state. ''' self._check_not_closed() return libnbdmod.aio_is_dead(self._o) def aio_is_closed(self): u'''▶ check if the connection is closed Return true if the connection has closed. There is no way to reconnect a closed connection. Instead you must close the whole handle. ''' self._check_not_closed() return libnbdmod.aio_is_closed(self._o) def aio_command_completed(self, cookie): u'''▶ check if the command completed Return true if the command completed. If this function returns true then the command was successful and it has been retired. Return false if the command is still in flight. This can also fail with an error in case the command failed (in this case the command is also retired). A command is retired either via this command, or by using a completion callback which returns 1. The "cookie" parameter is the positive unique 64 bit cookie for the command, as returned by a call such as "nbd.aio_pread". ''' self._check_not_closed() return libnbdmod.aio_command_completed(self._o, cookie) def aio_peek_command_completed(self): u'''▶ check if any command has completed Return the unique positive 64 bit cookie of the first non-retired but completed command, 0 if there are in-flight commands but none of them are awaiting retirement, or -1 on error including when there are no in-flight commands. Any cookie returned by this function must still be passed to "nbd.aio_command_completed" to actually retire the command and learn whether the command was successful. ''' self._check_not_closed() return libnbdmod.aio_peek_command_completed(self._o) def aio_in_flight(self): u'''▶ check how many aio commands are still in flight Return the number of in-flight aio commands that are still awaiting a response from the server before they can be retired. If this returns a non-zero value when requesting a disconnect from the server (see "nbd.aio_disconnect" and "nbd.shutdown"), libnbd does not try to wait for those commands to complete gracefully; if the server strands commands while shutting down, "nbd.aio_command_completed" will report those commands as failed with a status of "ENOTCONN". ''' self._check_not_closed() return libnbdmod.aio_in_flight(self._o) def connection_state(self): u'''▶ return string describing the state of the connection Returns a descriptive string for the state of the connection. This can be used for debugging or troubleshooting, but you should not rely on the state of connections since it may change in future versions. ''' self._check_not_closed() return libnbdmod.connection_state(self._o) def get_package_name(self): u'''▶ return the name of the library Returns the name of the library, always "libnbd" unless the library was modified with another name at compile time. ''' self._check_not_closed() return libnbdmod.get_package_name(self._o) def get_version(self): u'''▶ return the version of the library Return the version of libnbd. This is returned as a string in the form "major.minor.release" where each of major, minor and release is a small positive integer. For example: minor ↓ "1.0.3" ↑ ↑ major release major = 0 The major number was 0 for the early experimental versions of libnbd where we still had an unstable API. major = 1 The major number is 1 for the versions of libnbd with a long-term stable API and ABI. It is not anticipated that major will be any number other than 1. minor = 0, 2, ... (even) The minor number is even for stable releases. minor = 1, 3, ... (odd) The minor number is odd for development versions. Note that new APIs added in a development version remain experimental and subject to change in that branch until they appear in a stable release. release The release number is incremented for each release along a particular branch. ''' self._check_not_closed() return libnbdmod.get_version(self._o) def kill_subprocess(self, signum): u'''▶ kill server running as a subprocess This call may be used to kill the server running as a subprocess that was previously created using "nbd.connect_command". You do not need to use this call. It is only needed if the server does not exit when the socket is closed. The "signum" parameter is the optional signal number to send (see signal(7)). If "signum" is 0 then "SIGTERM" is sent. ''' self._check_not_closed() return libnbdmod.kill_subprocess(self._o, signum) def supports_tls(self): u'''▶ true if libnbd was compiled with support for TLS Returns true if libnbd was compiled with gnutls which is required to support TLS encryption, or false if not. ''' self._check_not_closed() return libnbdmod.supports_tls(self._o) def supports_vsock(self): u'''▶ true if libnbd was compiled with support for AF_VSOCK Returns true if libnbd was compiled with support for the "AF_VSOCK" family of sockets, or false if not. Note that on the Linux operating system, this returns true if there is compile-time support, but you may still need runtime support for some aspects of AF_VSOCK usage; for example, use of "VMADDR_CID_LOCAL" as the server name requires that the *vsock_loopback* kernel module is loaded. ''' self._check_not_closed() return libnbdmod.supports_vsock(self._o) def supports_uri(self): u'''▶ true if libnbd was compiled with support for NBD URIs Returns true if libnbd was compiled with libxml2 which is required to support NBD URIs, or false if not. ''' self._check_not_closed() return libnbdmod.supports_uri(self._o) def get_uri(self): u'''▶ construct an NBD URI for a connection This makes a best effort attempt to construct an NBD URI which could be used to connect back to the same server (using "nbd.connect_uri"). In some cases there is not enough information in the handle to successfully create a URI (eg. if you connected with "nbd.connect_socket"). In such cases the call returns "NULL" and further diagnostic information is available via "nbd.get_errno" and "nbd.get_error" as usual. Even if a URI is returned it is not guaranteed to work, and it may not be optimal. nbdinfo(1) *--uri* option is a way to access this API from shell scripts. ''' self._check_not_closed() return libnbdmod.get_uri(self._o) package_name = NBD().get_package_name() __version__ = NBD().get_version() if __name__ == "__main__": import nbdsh nbdsh.shell() libnbd-1.20.3/python/nbdsh.py0000644000175000017500000001526214525371754011524 # NBD client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import traceback # The NBD shell. def shell(): import argparse import code import os import sys import libnbdmod import nbd description = '''Network Block Device (NBD) shell''' epilog = '''Please read the nbdsh(1) manual page for full usage.''' parser = argparse.ArgumentParser(prog='nbdsh', description=description, epilog=epilog) # Allow intermixing of various options for replay in command-line order: # each option registered with this Action subclass will append a tuple # to a single list of snippets class SnippetAction(argparse.Action): def __init__(self, option_strings, dest, nargs=None, default=argparse.SUPPRESS, **kwargs): if nargs not in [0, None]: raise ValueError("nargs must be 0 or None") super().__init__(option_strings, dest, nargs=nargs, default=default, **kwargs) def __call__(self, parser, namespace, values, option_string=None): dest = self.dest if dest != 'command': setattr(namespace, 'need_handle', getattr(namespace, 'need_handle') + 1) elif values == '-': dest = 'stdin' snippets = getattr(namespace, 'snippets')[:] snippets.append((dest, values)) setattr(namespace, 'snippets', snippets) parser.set_defaults(need_handle=0, snippets=[]) short_options = [] long_options = [] parser.add_argument('--base-allocation', action=SnippetAction, nargs=0, help='request the "base:allocation" meta context') long_options.append("--base-allocation") parser.add_argument('-c', '--command', action=SnippetAction, help="run a Python statement " "(may be used multiple times)") short_options.append("-c") long_options.append("--command") parser.add_argument('-n', action='store_true', help="do not create the implicit handle 'h'") short_options.append("-n") parser.add_argument('--opt-mode', action=SnippetAction, nargs=0, help='request opt mode during connection') long_options.append("--opt-mode") parser.add_argument('-u', '--uri', action=SnippetAction, help="connect to NBD URI") short_options.append("-u") long_options.append("--uri") # For back-compat, provide --connect as an undocumented synonym to --uri parser.add_argument('--connect', dest='uri', action=SnippetAction, help=argparse.SUPPRESS) parser.add_argument('-v', '--verbose', action='store_true', help="enable verbose debugging") short_options.append("-v") long_options.append("--verbose") parser.add_argument('-V', '--version', action='store_true', help="display version information") short_options.append("-V") long_options.append("--version") # These hidden options are used by bash tab completion. parser.add_argument("--short-options", action='store_true', help=argparse.SUPPRESS) parser.add_argument("--long-options", action='store_true', help=argparse.SUPPRESS) args = parser.parse_args() # It's an error if -n is passed with certain other options. if args.n and args.need_handle: print("error: -n option cannot be used with " + "--base-allocation, --opt-mode or --uri", file=sys.stderr) exit(1) # Handle the informational options which exit. if args.version: libnbdmod.display_version("nbdsh") exit(0) if args.short_options: short_options.sort() print("\n".join(short_options)) exit(0) if args.long_options: long_options.sort() print("\n".join(long_options)) exit(0) # If verbose, set LIBNBD_DEBUG=1 if args.verbose: os.environ["LIBNBD_DEBUG"] = "1" # Create the handle. if not args.n: h = nbd.NBD() h.set_handle_name("nbdsh") # Run all snippets # https://stackoverflow.com/a/11754346 d = dict(locals(), **globals()) do_snippet = { "command": lambda arg: exec(arg, d, d), "stdin": lambda arg: exec(sys.stdin.read(), d, d), "base_allocation": lambda arg: h.add_meta_context( nbd.CONTEXT_BASE_ALLOCATION), "opt_mode": lambda arg: h.set_opt_mode(True), "uri": lambda arg: h.connect_uri(arg), } try: for (act, arg) in args.snippets: do_snippet[act](arg) except nbd.Error as ex: if nbd.NBD().get_debug(): traceback.print_exc() else: print("nbdsh: command line script failed: %s" % ex.string, file=sys.stderr) sys.exit(1) # If there are no explicit -c or --command parameters, go interactive. if len(args.snippets) - args.need_handle == 0: sys.ps1 = "nbd> " code.interact(banner=make_banner(args), local=locals(), exitmsg='') def make_banner(args): lines = [] def line(x): lines.append(x) def blank(): line("") def example(ex, desc): line("%-34s # %s" % (ex, desc)) blank() line("Welcome to nbdsh, the shell for interacting with") line("Network Block Device (NBD) servers.") blank() if not args.n: line("The ‘nbd’ module has already been imported and there") line("is an open NBD handle called ‘h’.") blank() else: line("The ‘nbd’ module has already been imported.") blank() example("h = nbd.NBD()", "Create a new handle.") example("h.get_size()", "Get size of the remote disk.") example("buf = h.pread(512, 0)", "Read the first sector.") example("exit() or Ctrl-D", "Quit the shell") example("help(nbd)", "Display documentation") blank() return "\n".join(lines) libnbd-1.20.3/python/pycodestyle.sh0000755000175000017500000000172314525371754012754 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires flake8 --version d="$abs_top_srcdir"/python test -f "$d"/nbd.py flake8 "$d"/nbd.py "$d"/nbdsh.py "$d"/examples/*.py "$d"/t/*.py libnbd-1.20.3/python/test-aio-connect-unix.sh0000755000175000017500000000210514553476147014543 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $PYTHON --version $NBDKIT -U - null --run '$PYTHON -c " import nbd import sys h = nbd.NBD() addr = sys.argv[1] h.aio_connect(addr) while h.aio_is_connecting(): h.poll(1) assert h.aio_is_ready() " "$unixsocket"' libnbd-1.20.3/sh/0000755000175000017500000000000014675532654007223 5libnbd-1.20.3/sh/examples/0000755000175000017500000000000014675532654011041 5libnbd-1.20.3/sh/examples/LICENSE-FOR-EXAMPLES0000644000175000017500000000342314525371754013624 The files in the sh/examples/ directory are licensed under this very permissive BSD license. This means that you can copy, use, adapt and modify them without any significant restrictions. You can also combine them with proprietary code or include them in code that is distributed under other open source licenses. ---------------------------------------------------------------------- libnbd examples Copyright Red Hat Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Red Hat nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. libnbd-1.20.3/sh/examples/hexdump.sh0000775000175000017500000000026514525371754012773 nbdsh -c - <<'EOF' from subprocess import * h.connect_uri("nbd://localhost") bootsect = h.pread(512, 0) p = Popen("hexdump -C", shell=True, stdin=PIPE) p.stdin.write(bootsect) EOF libnbd-1.20.3/sh/Makefile.am0000644000175000017500000000347314525371754011202 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk EXTRA_DIST = \ nbdsh.pod \ examples/LICENSE-FOR-EXAMPLES \ examples/hexdump.sh \ test-context.sh \ test-error.sh \ test-help.sh \ test-long-options.sh \ test-implicit-handle.sh \ test-pattern.sh \ test-short-options.sh \ test-verbose.sh \ test-version.sh \ $(NULL) if HAVE_PYTHON bin_SCRIPTS = nbdsh if HAVE_POD man_MANS = nbdsh.1 CLEANFILES += $(man_MANS) nbdsh.1: nbdsh.pod $(top_builddir)/podwrapper.pl $(PODWRAPPER) --section=1 --man $@ \ --html $(top_builddir)/html/$@.html \ --verbatim $(srcdir)/examples/hexdump.sh:__EXAMPLES_HEXDUMP__ \ $< endif HAVE_POD TESTS_ENVIRONMENT = \ LIBNBD_DEBUG=1 \ NBDKIT_DEBUG=1 \ $(MALLOC_CHECKS) \ EXPECTED_VERSION=$(VERSION) \ $(NULL) LOG_COMPILER = $(top_builddir)/run TESTS = \ test-help.sh \ test-version.sh \ test-verbose.sh \ test-short-options.sh \ test-long-options.sh \ test-implicit-handle.sh \ test-error.sh \ $(NULL) if HAVE_NBDKIT TESTS += \ test-context.sh \ test-pattern.sh \ $(NULL) endif HAVE_NBDKIT endif HAVE_PYTHON libnbd-1.20.3/sh/Makefile.in0000644000175000017500000011615614675532455011221 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # macOS's System Integrity Protection (SIP) misfeature removes the # DYLD_LIBRARY_PATH environment variable when passed to Apple (only) # binaries such as /bin/sh above. We must restore it here. Confine # this hack to Darwin only so it doesn't cause potential security # issues on normal platforms. case "@host_os@" in darwin*) if test -z "$DYLD_LIBRARY_PATH" && test -n "$_DYLD_LIBRARY_PATH"; then DYLD_LIBRARY_PATH="$_DYLD_LIBRARY_PATH" export DYLD_LIBRARY_PATH fi ;; esac # Test if /bin/sh supports exec -a option (only supported in bash 4.2 # and above, and not part of POSIX). if /bin/sh -c 'exec -a test true' 2>/dev/null; then exec -a nbdsh @PYTHON@ -mnbd "$@" else exec @PYTHON@ -mnbd "$@" fi libnbd-1.20.3/sh/nbdsh.pod0000644000175000017500000000754514525371754010754 =head1 NAME nbdsh - network block device (NBD) shell =head1 SYNOPSIS $ nbdsh Welcome to nbdsh, the shell for interacting with Network Block Device (NBD) servers. The ‘nbd’ module has already been imported and there is an open NBD handle called ‘h’. nbd> h.connect_command(["nbdkit", "-s", "memory", "1G"]) nbd> h.get_size() 1073741824 nbd> buf = b"hello, world" nbd> h.pwrite(buf, 0) nbd> exit() =head1 DESCRIPTION nbdsh is a Python-based client shell for accessing Network Block Device (NBD) servers. For documentation about the libnbd API please open the shell and type: help(nbd) =head1 EXAMPLES =head2 Print the size of an NBD export The I<-u> option connects to an NBD URI. The I<-c> option lets you execute single Python statements from the command line. Combining these two options lets you print the size in bytes of an NBD export: $ nbdsh -u nbd://localhost -c 'print(h.get_size())' 1073741824 =head2 Hexdump the boot sector of an NBD export Using I<-c -> you can feed a whole Python program to the standard input of nbdsh: __EXAMPLES_HEXDUMP__ =head1 OPTIONS =over 4 =item B<-h> =item B<--help> Display brief command line help and exit. =item B<--base-allocation> Request the use of the "base:allocation" meta context, which is the most common context used with L. This is equivalent to calling S> in the shell prior to connecting, and works even when combined with C<--uri> (while attempting the same with C<-c> would be too late). =item B<-c> 'COMMAND ...' =item B<--command> 'COMMAND ...' Instead of starting an interactive shell, run a command. This option can be specified multiple times in order to run multiple commands. =item B<-c -> =item B<--command -> Read standard input and execute it as a command. =item B<-n> Do not create the implicit handle C. =item B<--opt-mode> Request that option mode be enabled, which gives fine-grained control over option negotiation after initially contacting the server but prior to actually using the export. This is equivalent to calling S> in the shell prior to connecting, and works even when combined with C<--uri> (while attempting the same with C<-c> would be too late). =item B<-u> URI =item B<--uri> URI Connect to the given L. This is equivalent to the S> command in the shell. Note that the connection is created prior to processing any C<-c> commands, which prevents the use of configuration commands such as SNAMEC<)>> from the command line when mixed with this option. The options C<--opt-mode> and C<--base-allocation> can be used to make this situation easier to manage. =item B<-v> =item B<--verbose> Enable verbose libnbd messages. This has the same effect as setting the environment variable C =item B<-V> =item B<--version> Display the package name and version and exit. =back =head1 NOTES =head2 nbdsh examples There are some example nbdsh scripts in the libnbd source repository under F or see L. =head2 Using libnbd directly from Python nbdsh is convenient for command line scripting, but you do not have to use it. Instead you can write an ordinary Python program or module which imports the C module: #!/usr/bin/python3 import nbd h = nbd.NBD() h.connect_uri("nbd://localhost") There are some example Python scripts in the libnbd source repository under F or see L. =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/sh/test-context.sh0000755000175000017500000000662714553261420012137 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test effects of nbdsh --base-allocation fail=0 . ../tests/functions.sh requires nbdsh -c 'exit(not h.supports_uri())' # Without --base-allocation, no meta context is requested output=$($NBDKIT -U - null --run 'nbdsh \ -u "nbd+unix://?socket=$unixsocket" \ -c "print(h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION))"') if test "x$output" != xFalse; then echo "$0: unexpected output: $output" fail=1 fi # Can also use manual -c to request context before -u output=$($NBDKIT -U - null --run 'nbdsh \ -c "h.add_meta_context(nbd.CONTEXT_BASE_ALLOCATION)" \ -u "nbd+unix://?socket=$unixsocket" \ -c "print(h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION))" ') if test "x$output" != xTrue; then echo "$0: unexpected output: $output" fail=1 fi # With --base-allocation (and a server that supports it), meta context works. output=$($NBDKIT -U - null --run 'nbdsh \ --base-allocation --uri "nbd+unix://?socket=$unixsocket" \ --command "print(h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION))"') if test "x$output" != xTrue; then echo "$0: unexpected output: $output" fail=1 fi # Again, but with abbreviated option names output=$($NBDKIT -U - null --run 'nbdsh \ --b -u "nbd+unix://?socket=$unixsocket" \ -c "print(h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION))"') if test "x$output" != xTrue; then echo "$0: unexpected output: $output" fail=1 fi if [[ $($NBDKIT --help) =~ --no-sr ]]; then # meta context depends on server cooperation output=$($NBDKIT -U - --no-sr null --run 'nbdsh \ --base-allocation -u "nbd+unix://?socket=$unixsocket" \ -c "print(h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION))"') if test "x$output" != xFalse; then echo "$0: unexpected output: $output" fail=1 fi else echo "$0: $NBDKIT lacks --no-sr" fi # Test interaction with opt mode output=$($NBDKIT -U - null --run 'nbdsh \ --opt-mode --base-allocation -u "nbd+unix://?socket=$unixsocket" \ -c " try: h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION) assert False except nbd.Error: pass " \ -c "h.opt_go()" \ -c "print(h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION))"') if test "x$output" != xTrue; then echo "$0: unexpected output: $output" fail=1 fi # And with --opt-mode, we can get away without --base-allocation output=$($NBDKIT -U - null --run 'nbdsh \ --opt-mode -u "nbd+unix://?socket=$unixsocket" \ -c "h.add_meta_context(nbd.CONTEXT_BASE_ALLOCATION)" \ -c "h.opt_go()" \ -c "print(h.can_meta_context(nbd.CONTEXT_BASE_ALLOCATION))"') if test "x$output" != xTrue; then echo "$0: unexpected output: $output" fail=1 fi exit $fail libnbd-1.20.3/sh/test-error.sh0000755000175000017500000000445114525371754011610 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test how nbdsh handles errors . ../tests/functions.sh set -xe fail=0 out=test-error.out err=test-error.err files="$out $err" cleanup_fn rm -f $files rm -f $files # Test behavior with unknown option. No python trace should be present. nbdsh --no-such >$out 2>$err && fail=1 test ! -s $out cat $err grep Traceback $err && fail=1 grep '^nbdsh: .*unrecognized.*no-such' $err # Triggering nbd.Error non-interactively (via -c) prints the error. The # output includes the python trace when debugging is enabled (our default # when run under 'make check', but set explicitly here to make sure). LIBNBD_DEBUG=1 nbdsh -c 'h.is_read_only()' >$out 2>$err && fail=1 test ! -s $out cat $err grep Traceback $err grep 'in is_read_only' $err grep '^nbd\.Error: nbd_is_read_only: ' $err # Without debugging, the error is succinct. LIBNBD_DEBUG=0 nbdsh -c 'h.is_read_only()' >$out 2>$err && fail=1 test ! -s $out cat $err grep Traceback $err && fail=1 grep '^nbdsh: command line script failed: nbd_is_read_only: ' $err # --verbose overrides environment to request debugging. LIBNBD_DEBUG=0 nbdsh --verbose -c 'h.is_read_only()' >$out 2>$err && fail=1 test ! -s $out cat $err grep Traceback $err grep 'in is_read_only' $err grep '^nbd\.Error: nbd_is_read_only: ' $err # Test behavior when -u fails; since it triggers nbd.Error, it should # be succinct without debug. LIBNBD_DEBUG=0 nbdsh -u 'nbd+unix:///?socket=/nosuchsock' >$out 2>$err && fail=1 test ! -s $out cat $err grep Traceback $err && fail=1 grep '^nbdsh: .*nbd_connect_uri: ' $err exit $fail libnbd-1.20.3/sh/test-help.sh0000755000175000017500000000210014525371754011374 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdsh --help looks sane. fail=0 output=$(nbdsh --help) if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi if [[ ! ( "$output" =~ "usage:" && "$output" =~ "manual page" ) ]]; then echo "$0: unexpected output" fail=1 fi echo "$output" exit $fail libnbd-1.20.3/sh/test-long-options.sh0000755000175000017500000000215714525371754013110 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdsh --long-options looks sane. . ../tests/functions.sh set -e set -x output=test-long-options.out cleanup_fn rm -f $output $VG nbdsh --long-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- --command $output grep -- --uri $output grep -- --version $output libnbd-1.20.3/sh/test-implicit-handle.sh0000755000175000017500000000216414525371754013521 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test the implicit handle (h) and the -n option. . ../tests/functions.sh set -e $VG nbdsh -c ' assert h is not None assert isinstance(h, nbd.NBD) assert isinstance(h.get_debug(), bool) ' $VG nbdsh -n -c ' try: h except NameError: exit(0) else: import sys print("h should not be defined", file=sys.stderr) exit(1) ' libnbd-1.20.3/sh/test-pattern.sh0000755000175000017500000000256214553440043012122 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test interaction with nbdkit, and for correct global handling over -c. . ../tests/functions.sh requires $NBDKIT --exit-with-parent --version requires nbdsh -c 'exit(not h.supports_uri())' sock=$(mktemp -u /tmp/libnbd-test-nbdsh.XXXXXX) pidfile=test-pattern.pid cleanup_fn rm -f $sock $pidfile $NBDKIT -v -P $pidfile --exit-with-parent -U $sock pattern size=1m & wait_for_pidfile $NBDKIT $pidfile nbdsh -u "nbd+unix://?socket=$sock" \ -c ' def size(): return h.get_size() ' \ -c 'assert 1024*1024 == size()' \ -c 'assert h.pread(8, 8) == b"\x00\x00\x00\x00\x00\x00\x00\x08"' libnbd-1.20.3/sh/test-short-options.sh0000755000175000017500000000214114525371754013301 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdsh --short-options looks sane. . ../tests/functions.sh set -e set -x output=test-short-options.out cleanup_fn rm -f $output $VG nbdsh --short-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- -c $output grep -- -u $output grep -- -V $output libnbd-1.20.3/sh/test-verbose.sh0000755000175000017500000000173214525371754012123 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdsh --verbose looks sane. . ../tests/functions.sh set -e unset LIBNBD_DEBUG $VG nbdsh -c 'assert h.get_debug() == False' $VG nbdsh -v -c 'assert h.get_debug() == True' libnbd-1.20.3/sh/test-version.sh0000755000175000017500000000211614525371754012140 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdsh --version looks sane. fail=0 output=$($VG nbdsh --version) if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi if [ "$output" != "nbdsh $EXPECTED_VERSION libnbd $EXPECTED_VERSION" ]; then echo "$0: unexpected output" fail=1 fi echo "$output" exit $fail libnbd-1.20.3/info/0000755000175000017500000000000014675532654007544 5libnbd-1.20.3/info/Makefile.am0000644000175000017500000000546014574541740011517 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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libnbd-1.20.3/info/nbdinfo.h0000644000175000017500000000337314574541740011254 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef NBDINFO_H #define NBDINFO_H #include #include #include extern const char *progname; extern struct nbd_handle *nbd; extern FILE *fp; extern bool list_all; extern bool probe_content; extern bool json_output; extern const char *can; extern bool cannot; extern const char *map; extern bool size_only; extern bool totals; extern bool uri_only; void do_connect (struct nbd_handle *); bool uri_is_meaningful (void); /* can.c */ extern int can_exit_code; extern void do_can (void); /* list.c */ extern void collect_exports (void); extern bool list_all_exports (void); extern void free_exports (void); /* map.c */ extern void do_map (void); /* show.c */ extern bool show_one_export (struct nbd_handle *nbd, const char *desc, bool first, bool last); /* size.c */ extern void do_size (void); /* uri.c */ extern void do_uri (void); /* utils.c */ extern void print_json_string (const char *); #endif /* NBDINFO_H */ libnbd-1.20.3/info/can.c0000644000175000017500000001010114574542103010346 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Handle --can and --cannot flags (and synonyms). */ #include #include #include #include #include #include #include "nbdinfo.h" int can_exit_code; void do_can (void) { int feature; assert (can); if (strcasecmp (can, "connect") == 0 || strcasecmp (can, "read") == 0) feature = 1; else if (strcasecmp (can, "tls") == 0) feature = nbd_get_tls_negotiated (nbd); else if (strcasecmp (can, "sr") == 0 || strcasecmp (can, "structured") == 0 || strcasecmp (can, "structured reply") == 0 || strcasecmp (can, "structured-reply") == 0 || strcasecmp (can, "structured_reply") == 0 || strcasecmp (can, "structured replies") == 0 || strcasecmp (can, "structured-replies") == 0 || strcasecmp (can, "structured_replies") == 0) feature = nbd_get_structured_replies_negotiated (nbd); else if (strcasecmp (can, "eh") == 0 || strcasecmp (can, "extended header") == 0 || strcasecmp (can, "extended-header") == 0 || strcasecmp (can, "extended_header") == 0 || strcasecmp (can, "extended headers") == 0 || strcasecmp (can, "extended-headers") == 0 || strcasecmp (can, "extended_headers") == 0) feature = nbd_get_extended_headers_negotiated (nbd); else if (strcasecmp (can, "readonly") == 0 || strcasecmp (can, "read-only") == 0 || strcasecmp (can, "read_only") == 0) feature = nbd_is_read_only (nbd); else if (strcasecmp (can, "write") == 0) { feature = nbd_is_read_only (nbd); if (feature >= 0) feature = !feature; } else if (strcasecmp (can, "rotational") == 0) feature = nbd_is_rotational (nbd); else if (strcasecmp (can, "block status payload") == 0 || strcasecmp (can, "block-status-payload") == 0 || strcasecmp (can, "block_status_payload") == 0) feature = nbd_can_block_status_payload (nbd); else if (strcasecmp (can, "cache") == 0) feature = nbd_can_cache (nbd); else if (strcasecmp (can, "df") == 0) feature = nbd_can_df (nbd); else if (strcasecmp (can, "fastzero") == 0 || strcasecmp (can, "fast-zero") == 0 || strcasecmp (can, "fast_zero") == 0) feature = nbd_can_fast_zero (nbd); else if (strcasecmp (can, "flush") == 0) feature = nbd_can_flush (nbd); else if (strcasecmp (can, "fua") == 0) feature = nbd_can_fua (nbd); else if (strcasecmp (can, "multiconn") == 0 || strcasecmp (can, "multi-conn") == 0 || strcasecmp (can, "multi_conn") == 0) feature = nbd_can_multi_conn (nbd); else if (strcasecmp (can, "trim") == 0) feature = nbd_can_trim (nbd); else if (strcasecmp (can, "zero") == 0) feature = nbd_can_zero (nbd); else { const char *what = !cannot ? "--can/--is/--has" : "--cannot/--isnt/--hasnt"; fprintf (stderr, "%s: unknown %s option: %s\n", progname, what, can); exit (EXIT_FAILURE); } if (feature == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } /* If cannot, negate the result. */ if (cannot) feature = !feature; /* Translate the feature bool into an exit code. This is used in main(). */ can_exit_code = feature ? EXIT_SUCCESS : 2; } libnbd-1.20.3/info/list.c0000644000175000017500000000634714525371754010611 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include "vector.h" #include "nbdinfo.h" struct export { char *name; char *desc; }; DEFINE_VECTOR_TYPE (exports, struct export); static exports export_list = empty_vector; static int collect_export (void *opaque, const char *name, const char *desc) { struct export e; e.name = strdup (name); e.desc = strdup (desc); if (e.name == NULL || e.desc == NULL || exports_append (&export_list, e) == -1) { perror ("malloc"); exit (EXIT_FAILURE); } return 0; } void collect_exports (void) { if (nbd_opt_list (nbd, (nbd_list_callback) {.callback = collect_export}) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } } void free_exports (void) { size_t i; for (i = 0; i < export_list.len; ++i) { free (export_list.ptr[i].name); free (export_list.ptr[i].desc); } free (export_list.ptr); } bool list_all_exports (void) { size_t i; bool list_okay = true; if (export_list.len == 0 && json_output) fprintf (fp, "\"exports\": []\n"); for (i = 0; i < export_list.len; ++i) { const char *name = export_list.ptr[i].name; struct nbd_handle *nbd2; if (probe_content) { /* Connect to the original URI, but using opt mode to alter the export. */ nbd2 = nbd_create (); if (nbd2 == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } nbd_set_uri_allow_local_file (nbd2, true); /* Allow ?tls-psk-file. */ nbd_set_opt_mode (nbd2, true); nbd_set_request_meta_context (nbd2, false); nbd_set_full_info (nbd2, true); do_connect (nbd2); if (nbd_set_export_name (nbd2, name) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } } else { /* ! probe_content */ if (nbd_set_export_name (nbd, name) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } nbd2 = nbd; } /* List the metadata of this export. */ if (!show_one_export (nbd2, export_list.ptr[i].desc, i == 0, i + 1 == export_list.len)) list_okay = false; if (probe_content) { nbd_shutdown (nbd2, 0); nbd_close (nbd2); } } return list_okay; } libnbd-1.20.3/info/main.c0000644000175000017500000003324714574561036010557 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include "ansi-colours.h" #include "version.h" #include "nbdinfo.h" const char *progname; struct nbd_handle *nbd; FILE *fp; /* output file descriptor */ bool colour; /* --colour / --no-colour option */ bool list_all = false; /* --list option */ bool probe_content = false; /* --content / --no-content option */ bool json_output = false; /* --json option */ const char *can = NULL; /* --is/--can option */ bool cannot = false; /* --can option is negated */ const char *map = NULL; /* --map option */ bool size_only = false; /* --size option */ bool totals = false; /* --totals option */ bool uri_only = false; /* --uri option */ /* See do_connect () */ static enum { MODE_URI = 1, MODE_SQUARE_BRACKET } mode; static char **args; static void __attribute__ ((noreturn)) usage (FILE *fp, int exitcode) { fprintf (fp, "\n" "Display information and metadata about NBD servers and exports:\n" "\n" " nbdinfo [--json] NBD-URI | [ CMD ARGS ... ]\n" " nbdinfo --size [--json] NBD-URI | [ CMD ARGS ... ]\n" " nbdinfo --uri [--json] NBD-URI\n" " nbdinfo --is read-only|rotational NBD-URI | [ CMD ARGS ... ]\n" " nbdinfo --isnt read-only|rotational NBD-URI | [ CMD ARGS ... ]\n" " nbdinfo --can cache|connect|... NBD-URI | [ CMD ARGS ... ]\n" " nbdinfo --cannot cache|connect|... NBD-URI | [ CMD ARGS ... ]\n" " nbdinfo --map [--totals] [--json] NBD-URI | [ CMD ARGS ... ]\n" " nbdinfo -L|--list [--json] NBD-URI | [ CMD ARGS ... ]\n" "\n" "Other options:\n" "\n" " nbdinfo --help\n" " nbdinfo --version\n" "\n" "Examples:\n" "\n" " nbdinfo nbd://localhost\n" " nbdinfo \"nbd+unix:///?socket=/tmp/unixsock\"\n" " nbdinfo --size nbd://example.com\n" " nbdinfo --uri nbd://example.com\n" " nbdinfo --can connect nbd://example.com\n" " nbdinfo --is read-only nbd://example.com\n" " nbdinfo --map nbd://example.com\n" " nbdinfo --json nbd://example.com\n" " nbdinfo --list nbd://example.com\n" " nbdinfo --map -- [ qemu-nbd -r -f qcow2 file.qcow2 ]\n" "\n" "Please read the nbdinfo(1) manual page for full usage.\n" "\n" ); exit (exitcode); } void clean_shutdown (void) { /* If we are connected but detect an error, try to give the server * notice that we are done talking. Ignore failures, as this is * only a courtesy measure. */ if (nbd) nbd_shutdown (nbd, 0); } int main (int argc, char *argv[]) { enum { HELP_OPTION = CHAR_MAX + 1, LONG_OPTIONS, SHORT_OPTIONS, COLOUR_OPTION, NO_COLOUR_OPTION, CONTENT_OPTION, NO_CONTENT_OPTION, JSON_OPTION, CAN_OPTION, CANNOT_OPTION, MAP_OPTION, SIZE_OPTION, TOTALS_OPTION, URI_OPTION, }; const char *short_options = "LV"; const struct option long_options[] = { { "help", no_argument, NULL, HELP_OPTION }, { "can", required_argument, NULL, CAN_OPTION }, { "cannot", required_argument, NULL, CANNOT_OPTION }, { "can-not", required_argument, NULL, CANNOT_OPTION }, { "cant", required_argument, NULL, CANNOT_OPTION }, { "color", no_argument, NULL, COLOUR_OPTION }, { "colors", no_argument, NULL, COLOUR_OPTION }, { "colour", no_argument, NULL, COLOUR_OPTION }, { "colours", no_argument, NULL, COLOUR_OPTION }, { "no-color", no_argument, NULL, NO_COLOUR_OPTION }, { "no-colors", no_argument, NULL, NO_COLOUR_OPTION }, { "no-colour", no_argument, NULL, NO_COLOUR_OPTION }, { "no-colours", no_argument, NULL, NO_COLOUR_OPTION }, { "content", no_argument, NULL, CONTENT_OPTION }, { "no-content", no_argument, NULL, NO_CONTENT_OPTION }, { "has", required_argument, NULL, CAN_OPTION }, { "hasnot", required_argument, NULL, CANNOT_OPTION }, { "has-not", required_argument, NULL, CANNOT_OPTION }, { "hasnt", required_argument, NULL, CANNOT_OPTION }, { "have", required_argument, NULL, CAN_OPTION }, { "havent", required_argument, NULL, CANNOT_OPTION }, { "havenot", required_argument, NULL, CANNOT_OPTION }, { "have-not", required_argument, NULL, CANNOT_OPTION }, { "is", required_argument, NULL, CAN_OPTION }, { "isnot", required_argument, NULL, CANNOT_OPTION }, { "is-not", required_argument, NULL, CANNOT_OPTION }, { "isnt", required_argument, NULL, CANNOT_OPTION }, { "json", no_argument, NULL, JSON_OPTION }, { "list", no_argument, NULL, 'L' }, { "long-options", no_argument, NULL, LONG_OPTIONS }, { "map", optional_argument, NULL, MAP_OPTION }, { "short-options", no_argument, NULL, SHORT_OPTIONS }, { "size", no_argument, NULL, SIZE_OPTION }, { "total", no_argument, NULL, TOTALS_OPTION }, { "totals", no_argument, NULL, TOTALS_OPTION }, { "uri", no_argument, NULL, URI_OPTION }, { "version", no_argument, NULL, 'V' }, { NULL } }; size_t i; char *output = NULL; size_t output_len = 0; bool content_flag = false, no_content_flag = false; bool list_okay = true; progname = argv[0]; colour = isatty (STDOUT_FILENO); for (;;) { int c = getopt_long (argc, argv, short_options, long_options, NULL); if (c == -1) break; switch (c) { case HELP_OPTION: usage (stdout, EXIT_SUCCESS); case LONG_OPTIONS: for (i = 0; long_options[i].name != NULL; ++i) { if (strcmp (long_options[i].name, "long-options") != 0 && strcmp (long_options[i].name, "short-options") != 0) printf ("--%s\n", long_options[i].name); } exit (EXIT_SUCCESS); case SHORT_OPTIONS: for (i = 0; short_options[i]; ++i) { if (short_options[i] != ':' && short_options[i] != '+') printf ("-%c\n", short_options[i]); } exit (EXIT_SUCCESS); case JSON_OPTION: json_output = true; break; case COLOUR_OPTION: colour = true; break; case NO_COLOUR_OPTION: colour = false; break; case CONTENT_OPTION: content_flag = true; break; case NO_CONTENT_OPTION: no_content_flag = true; break; case CAN_OPTION: can = optarg; break; case CANNOT_OPTION: can = optarg; cannot = true; break; case MAP_OPTION: map = optarg ? optarg : "base:allocation"; break; case SIZE_OPTION: size_only = true; break; case TOTALS_OPTION: totals = true; break; case URI_OPTION: uri_only = true; break; case 'L': list_all = true; break; case 'V': display_version ("nbdinfo"); exit (EXIT_SUCCESS); default: usage (stderr, EXIT_FAILURE); } } /* Is it a URI or subprocess? */ if (argc - optind >= 3 && strcmp (argv[optind], "[") == 0 && strcmp (argv[argc-1], "]") == 0) { mode = MODE_SQUARE_BRACKET; argv[argc-1] = NULL; args = &argv[optind+1]; } else if (argc - optind == 1) { mode = MODE_URI; args = &argv[optind]; } else { usage (stderr, EXIT_FAILURE); } /* You cannot combine certain options. */ if (!!list_all + !!can + !!map + !!size_only + !!uri_only > 1) { fprintf (stderr, "%s: you cannot use --can, --cannot, --list, --map, --size " "and --uri together.\n", progname); exit (EXIT_FAILURE); } if (content_flag && no_content_flag) { fprintf (stderr, "%s: you cannot use %s and %s together.\n", progname, "--content", "--no-content"); exit (EXIT_FAILURE); } if (totals && !map) { fprintf (stderr, "%s: you must use --totals only with --map option.\n", progname); exit (EXIT_FAILURE); } /* Work out if we should probe content. */ probe_content = !list_all; if (content_flag) probe_content = true; if (no_content_flag) probe_content = false; if (can) probe_content = false; if (map) probe_content = false; /* Try to write output atomically. We spool output into a * memstream, pointed to by fp, and write it all at once at the end. * On error nothing should be printed on stdout. */ fp = open_memstream (&output, &output_len); if (fp == NULL) { fprintf (stderr, "%s: ", progname); perror ("open_memstream"); exit (EXIT_FAILURE); } /* Open the NBD side. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } atexit (clean_shutdown); nbd_set_uri_allow_local_file (nbd, true); /* Allow ?tls-psk-file. */ /* Set optional modes in the handle. */ nbd_set_opt_mode (nbd, true); if (!can && !map && !size_only && !uri_only) nbd_set_full_info (nbd, true); if (map) nbd_add_meta_context (nbd, map); /* Connect to the server. */ do_connect (nbd); /* In --list mode, during negotiation we collect the list of exports. */ if (list_all) /* --list */ collect_exports (); if (size_only) /* --size (!list_all) */ do_size (); else if (uri_only) /* --uri (!list_all) */ do_uri (); else if (can) /* --can/--cannot (!list_all) */ do_can (); else if (map) /* --map (!list_all) */ do_map (); else { /* not --size, --uri, --is or --map */ const char *protocol; int tls_negotiated; int sr_negotiated; int eh_negotiated; /* Print per-connection fields. */ protocol = nbd_get_protocol (nbd); tls_negotiated = nbd_get_tls_negotiated (nbd); sr_negotiated = nbd_get_structured_replies_negotiated (nbd); eh_negotiated = nbd_get_extended_headers_negotiated (nbd); if (!json_output) { if (protocol) { ansi_colour (ANSI_FG_GREY, fp); fprintf (fp, "protocol: %s", protocol); if (tls_negotiated >= 0) fprintf (fp, " %s TLS", tls_negotiated ? "with" : "without"); if (eh_negotiated >= 0 && sr_negotiated >= 0) fprintf (fp, ", using %s packets", eh_negotiated ? "extended" : sr_negotiated ? "structured" : "simple"); fprintf (fp, "\n"); ansi_restore (fp); } } else { fprintf (fp, "{\n"); if (protocol) { fprintf (fp, "\"protocol\": "); print_json_string (protocol); fprintf (fp, ",\n"); } if (tls_negotiated >= 0) fprintf (fp, "\"TLS\": %s,\n", tls_negotiated ? "true" : "false"); if (sr_negotiated >= 0) fprintf (fp, "\"structured\": %s,\n", sr_negotiated ? "true" : "false"); if (eh_negotiated >= 0) fprintf (fp, "\"extended\": %s,\n", eh_negotiated ? "true" : "false"); } if (!list_all) list_okay = show_one_export (nbd, NULL, true, true); else list_okay = list_all_exports (); if (json_output) fprintf (fp, "}\n"); } free_exports (); nbd_shutdown (nbd, 0); nbd_close (nbd); nbd = NULL; /* Close the output stream and copy it to the real stdout. */ if (fclose (fp) == EOF) { fprintf (stderr, "%s: ", progname); perror ("fclose"); exit (EXIT_FAILURE); } if (fputs (output, stdout) == EOF) { fprintf (stderr, "%s: ", progname); perror ("puts"); exit (EXIT_FAILURE); } free (output); if (can) exit (can_exit_code); exit (list_okay ? EXIT_SUCCESS : EXIT_FAILURE); } /* Connect the handle to the server. */ void do_connect (struct nbd_handle *nbd) { int r; switch (mode) { case MODE_URI: /* NBD-URI */ r = nbd_connect_uri (nbd, args[0]); break; case MODE_SQUARE_BRACKET: /* [ CMD ARGS ... ] */ r = nbd_connect_systemd_socket_activation (nbd, args); break; default: abort (); } if (r == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } /* If we are in opt mode, request info on the original export name. * However, ignoring failure at this time is okay, as later code * may want to try an alternate export name. */ if (nbd_aio_is_negotiating (nbd)) nbd_opt_info (nbd); } /* The URI field in output is not meaningful unless there's a * persistent NBD server running, that is to say that nbdinfo was * invoked with a URI (not a [ subprocess ]). If this returns false * it suppresses the uri: field in output. */ bool uri_is_meaningful (void) { return mode == MODE_URI; } libnbd-1.20.3/info/map.c0000644000175000017500000002345414565712165010410 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include "ansi-colours.h" #include "minmax.h" #include "vector.h" #include "nbdinfo.h" DEFINE_VECTOR_TYPE (extent_vector, nbd_extent); static void print_extents (extent_vector *entries); static void print_totals (extent_vector *entries, int64_t size); static int extent_callback (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error); void do_map (void) { size_t i; int64_t size; extent_vector entries = empty_vector; uint64_t offset, align, max_len; size_t prev_entries_size; /* Map mode requires switching over to transmission phase. */ if (nbd_aio_is_negotiating (nbd) && nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } /* Did we get the requested map? */ if (nbd_can_meta_context (nbd, map) < 1) { fprintf (stderr, "%s: --map: server does not support metadata context \"%s\"\n", progname, map); exit (EXIT_FAILURE); } align = nbd_get_block_size (nbd, LIBNBD_SIZE_MINIMUM) ?: 512; max_len = UINT32_MAX - align + 1; size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_get_extended_headers_negotiated (nbd) == 1) max_len = size; for (offset = 0; offset < size;) { prev_entries_size = entries.len; if (nbd_block_status_64 (nbd, MIN (size - offset, max_len), offset, (nbd_extent64_callback) { .callback = extent_callback, .user_data = &entries }, 0) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } /* We expect extent_callback to add at least one extent to entries. */ if (prev_entries_size == entries.len) { fprintf (stderr, "%s: --map: server did not return any extents\n", progname); exit (EXIT_FAILURE); } for (i = prev_entries_size; i < entries.len; i++) offset += entries.ptr[i].length; } if (!totals) print_extents (&entries); else print_totals (&entries, size); free (entries.ptr); } /* Callback handling --map. */ static void print_one_extent (uint64_t offset, uint64_t len, uint64_t type); static void extent_description (const char *metacontext, uint64_t type, char **descr, bool *free_descr, const char **fg, const char **bg); static int extent_callback (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { extent_vector *list = user_data; size_t i; if (strcmp (metacontext, map) != 0) return 0; /* Just append the entries we got to the list. They are printed in * print_extents below. */ for (i = 0; i < nr_entries; ++i) { if (extent_vector_append (list, entries[i]) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } } return 0; } static void print_extents (extent_vector *entries) { size_t i, j; uint64_t offset = 0; /* end of last extent printed + 1 */ size_t last = 0; /* last entry printed + 1 */ if (json_output) fprintf (fp, "[\n"); for (i = 0; i < entries->len; i++) { uint64_t type = entries->ptr[last].flags; /* If we're coalescing and the current type is different from the * previous one then we should print everything up to this entry. */ if (last != i && entries->ptr[i].flags != type) { uint64_t len; /* Calculate the length of the coalesced extent. */ for (j = last, len = 0; j < i; j++) len += entries->ptr[j].length; print_one_extent (offset, len, type); offset += len; last = i; } } /* Print the last extent if there is one. */ if (last != i) { uint64_t type = entries->ptr[last].flags; uint64_t len; for (j = last, len = 0; j < i; j++) len += entries->ptr[j].length; print_one_extent (offset, len, type); } if (json_output) fprintf (fp, "\n]\n"); } static void print_one_extent (uint64_t offset, uint64_t len, uint64_t type) { static bool comma = false; char *descr; bool free_descr; const char *fg, *bg; extent_description (map, type, &descr, &free_descr, &fg, &bg); if (!json_output) { if (fg) ansi_colour (fg, fp); if (bg) ansi_colour (bg, fp); fprintf (fp, "%10" PRIu64 " " "%10" PRIu64 " " "%3" PRIu64, offset, len, type); if (descr) fprintf (fp, " %s", descr); if (fg || bg) ansi_restore (fp); fprintf (fp, "\n"); } else { if (comma) fprintf (fp, ",\n"); fprintf (fp, "{ \"offset\": %" PRIu64 ", " "\"length\": %" PRIu64 ", " "\"type\": %" PRIu64, offset, len, type); if (descr) { fprintf (fp, ", \"description\": "); print_json_string (descr); } fprintf (fp, "}"); comma = true; } if (free_descr) free (descr); } /* --map --totals suboption */ static void print_totals (extent_vector *entries, int64_t size) { uint64_t type; bool comma = false; /* This is necessary to avoid a divide by zero below, but if the * size of the export is zero then we know we will not print any * information below so return quickly. */ if (size == 0) { if (json_output) fprintf (fp, "[]\n"); return; } if (json_output) fprintf (fp, "[\n"); /* In the outer loop assume we have already printed all entries with * entry type < type. Count all instances of type and at the same * time find the next type that exists > type. */ type = 0; for (;;) { uint64_t next_type = 0; uint64_t c = 0; size_t i; for (i = 0; i < entries->len; i++) { uint64_t t = entries->ptr[i].flags; if (t == type) c += entries->ptr[i].length; else if (type < t && (next_type == 0 || t < next_type)) next_type = t; } if (c > 0) { char *descr; bool free_descr; const char *fg, *bg; double percent = 100.0 * c / size; extent_description (map, type, &descr, &free_descr, &fg, &bg); if (!json_output) { if (fg) ansi_colour (fg, fp); if (bg) ansi_colour (bg, fp); fprintf (fp, "%10" PRIu64 " %5.1f%% %3" PRIu64, c, percent, type); if (descr) fprintf (fp, " %s", descr); if (fg || bg) ansi_restore (fp); fprintf (fp, "\n"); } else { if (comma) fprintf (fp, ",\n"); fprintf (fp, "{ \"size\": %" PRIu64 ", " "\"percent\": %g, " "\"type\": %" PRIu64, c, percent, type); if (descr) { fprintf (fp, ", \"description\": "); print_json_string (descr); } fprintf (fp, " }"); comma = true; } if (free_descr) free (descr); } if (next_type == 0) break; type = next_type; } if (json_output) fprintf (fp, "\n]\n"); } static void extent_description (const char *metacontext, uint64_t type, char **descr, bool *free_descr, const char **fg, const char **bg) { if (strcmp (metacontext, "base:allocation") == 0) { switch (type) { case 0: *descr = "data"; *free_descr = false; *fg = ANSI_FG_BOLD_BLACK; *bg = NULL; return; case 1: *descr = "hole"; *free_descr = false; *fg = *bg = NULL; return; case 2: *descr = "zero"; *free_descr = false; *fg = *bg = NULL; return; case 3: *descr = "hole,zero"; *free_descr = false; *fg = *bg = NULL; return; } } else if (strncmp (metacontext, "qemu:dirty-bitmap:", 18) == 0) { switch (type) { case 0: *descr = "clean"; *free_descr = false; *fg = ANSI_FG_GREEN; *bg = NULL; return; case 1: *descr = "dirty"; *free_descr = false; *fg = ANSI_FG_RED; *bg = NULL; return; } } else if (strcmp (metacontext, "qemu:allocation-depth") == 0) { switch (type) { case 0: *descr = "absent"; *free_descr = false; *fg = *bg = NULL; return; case 1: *descr = "local"; *free_descr = false; *fg = ANSI_FG_BRIGHT_WHITE; *bg = ANSI_BG_BLACK; return; default: if (asprintf (descr, "backing depth %" PRIu64, type) == -1) { perror ("asprintf"); exit (EXIT_FAILURE); } *free_descr = true; *fg = NULL; *bg = ANSI_BG_LIGHT_GREY; return; } } /* Don't know - description field will be omitted. */ *descr = NULL; *free_descr = false; *fg = NULL; *bg = NULL; } libnbd-1.20.3/info/show.c0000644000175000017500000003072114572302405010574 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include "ansi-colours.h" #include "human-size.h" #include "string-vector.h" #include "nbdinfo.h" static void show_boolean (const char *name, bool cond); static void show_size (const char *name, int64_t size); static int collect_context (void *opaque, const char *name); static char *get_content (struct nbd_handle *, int64_t size); /* NB: Don't use global nbd handle since this can be called indirectly * from list_all_exports with a newly created handle. */ bool show_one_export (struct nbd_handle *nbd, const char *desc, bool first, bool last) { int64_t i, size; char size_str[HUMAN_SIZE_LONGEST] = "unavailable"; bool human_size_flag = false; char *export_name = NULL; char *export_desc = NULL; char *content = NULL; char *uri = NULL; int is_rotational, is_read_only; int can_cache, can_df, can_fast_zero, can_flush, can_fua, can_multi_conn, can_trim, can_zero, can_block_status_payload; int64_t block_minimum, block_preferred, block_maximum; string_vector contexts = empty_vector; bool show_context = false; /* Collect the metadata we are going to display. If opt_info works, * great; if not (such as for legacy newstyle), we have to go all * the way with opt_go. If we fail to connect (such as a server * advertising something it later refuses to serve), return rather * than exit, to allow output on the rest of the list. */ nbd_set_request_meta_context (nbd, false); if (nbd_aio_is_negotiating (nbd) && nbd_opt_info (nbd) == -1 && nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s: %s", progname, nbd_get_error ()); char *e = nbd_get_export_name (nbd); if (e) { if (e[0] == '\0') fprintf (stderr, " for the default export"); else fprintf (stderr, " for export: %s", e); } free (e); fprintf (stderr, "\n"); if (!list_all) fprintf (stderr, "%s: suggestion: " "to list all exports on the server, use --list\n", progname); return false; } size = nbd_get_size (nbd); if (size >= 0) human_size (size_str, size, &human_size_flag); if (uri_is_meaningful ()) uri = nbd_get_uri (nbd); /* Prefer the server's version of the name, if available */ export_name = nbd_get_canonical_export_name (nbd); if (export_name == NULL) export_name = nbd_get_export_name (nbd); if (export_name == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } /* Get description if list didn't already give us one */ if (!desc) desc = export_desc = nbd_get_export_description (nbd); is_rotational = nbd_is_rotational (nbd); is_read_only = nbd_is_read_only (nbd); can_cache = nbd_can_cache (nbd); can_df = nbd_can_df (nbd); can_fast_zero = nbd_can_fast_zero (nbd); can_flush = nbd_can_flush (nbd); can_fua = nbd_can_fua (nbd); can_multi_conn = nbd_can_multi_conn (nbd); can_trim = nbd_can_trim (nbd); can_zero = nbd_can_zero (nbd); can_block_status_payload = nbd_can_block_status_payload (nbd); block_minimum = nbd_get_block_size (nbd, LIBNBD_SIZE_MINIMUM); block_preferred = nbd_get_block_size (nbd, LIBNBD_SIZE_PREFERRED); block_maximum = nbd_get_block_size (nbd, LIBNBD_SIZE_MAXIMUM); if (nbd_opt_list_meta_context (nbd, (nbd_context_callback) {.callback = collect_context, .user_data = &contexts}) != -1) show_context = true; /* Get content last, as it moves the connection out of negotiating */ if (size >= 0) content = get_content (nbd, size); if (!json_output) { ansi_colour (ANSI_FG_BOLD_BLACK, fp); fprintf (fp, "export="); /* Might as well use the JSON function to get an escaped string here ... */ print_json_string (export_name); fprintf (fp, ":\n"); if (desc && *desc) fprintf (fp, "\tdescription: %s\n", desc); if (size >= 0) { if (human_size_flag) fprintf (fp, "\texport-size: %" PRIi64 " (%s)\n", size, size_str); else fprintf (fp, "\texport-size: %" PRIi64 "\n", size); } else fprintf (fp, "\texport-size: %s\n", size_str); if (content) fprintf (fp, "\tcontent: %s\n", content); if (uri) fprintf (fp, "\turi: %s\n", uri); ansi_restore (fp); ansi_colour (ANSI_FG_GREY, fp); if (show_context) { fprintf (fp, "\tcontexts:\n"); for (i = 0; i < contexts.len; ++i) fprintf (fp, "\t\t%s\n", contexts.ptr[i]); } if (is_rotational >= 0) fprintf (fp, "\t%s: %s\n", "is_rotational", is_rotational ? "true" : "false"); ansi_restore (fp); if (is_read_only >= 0) fprintf (fp, "\t%s: %s\n", "is_read_only", is_read_only ? "true" : "false"); if (can_block_status_payload >= 0) show_boolean ("can_block_status_payload", can_block_status_payload); if (can_cache >= 0) show_boolean ("can_cache", can_cache); if (can_df >= 0) show_boolean ("can_df", can_df); if (can_fast_zero >= 0) show_boolean ("can_fast_zero", can_fast_zero); if (can_flush >= 0) show_boolean ("can_flush", can_flush); if (can_fua >= 0) show_boolean ("can_fua", can_fua); if (can_multi_conn >= 0) show_boolean ("can_multi_conn", can_multi_conn); if (can_trim >= 0) show_boolean ("can_trim", can_trim); if (can_zero >= 0) show_boolean ("can_zero", can_zero); show_size ("block_size_minimum", block_minimum); show_size ("block_size_preferred", block_preferred); show_size ("block_size_maximum", block_maximum); } else { if (first) fprintf (fp, "\"exports\": [\n"); fprintf (fp, "\t{\n"); fprintf (fp, "\t\"export-name\": "); print_json_string (export_name); fprintf (fp, ",\n"); if (desc && *desc) { fprintf (fp, "\t\"description\": "); print_json_string (desc); fprintf (fp, ",\n"); } if (content) { fprintf (fp, "\t\"content\": "); print_json_string (content); fprintf (fp, ",\n"); } if (uri) { fprintf (fp, "\t\"uri\": "); print_json_string (uri); fprintf (fp, ",\n"); } if (show_context) { fprintf (fp, "\t\"contexts\": [\n"); for (i = 0; i < contexts.len; ++i) { fprintf (fp, "\t\t"); print_json_string (contexts.ptr[i]); if (i+1 != contexts.len) fputc (',', fp); fputc ('\n', fp); } fprintf (fp, "\t],\n"); } if (is_rotational >= 0) fprintf (fp, "\t\"%s\": %s,\n", "is_rotational", is_rotational ? "true" : "false"); if (is_read_only >= 0) fprintf (fp, "\t\"%s\": %s,\n", "is_read_only", is_read_only ? "true" : "false"); if (can_block_status_payload >= 0) fprintf (fp, "\t\"%s\": %s,\n", "can_block_status_payload", can_block_status_payload ? "true" : "false"); if (can_cache >= 0) fprintf (fp, "\t\"%s\": %s,\n", "can_cache", can_cache ? "true" : "false"); if (can_df >= 0) fprintf (fp, "\t\"%s\": %s,\n", "can_df", can_df ? "true" : "false"); if (can_fast_zero >= 0) fprintf (fp, "\t\"%s\": %s,\n", "can_fast_zero", can_fast_zero ? "true" : "false"); if (can_flush >= 0) fprintf (fp, "\t\"%s\": %s,\n", "can_flush", can_flush ? "true" : "false"); if (can_fua >= 0) fprintf (fp, "\t\"%s\": %s,\n", "can_fua", can_fua ? "true" : "false"); if (can_multi_conn >= 0) fprintf (fp, "\t\"%s\": %s,\n", "can_multi_conn", can_multi_conn ? "true" : "false"); if (can_trim >= 0) fprintf (fp, "\t\"%s\": %s,\n", "can_trim", can_trim ? "true" : "false"); if (can_zero >= 0) fprintf (fp, "\t\"%s\": %s,\n", "can_zero", can_zero ? "true" : "false"); if (block_minimum > 0) fprintf (fp, "\t\"%s\": %" PRId64 ",\n", "block_size_minimum", block_minimum); if (block_preferred > 0) fprintf (fp, "\t\"%s\": %" PRId64 ",\n", "block_size_preferred", block_preferred); if (block_maximum > 0) fprintf (fp, "\t\"%s\": %" PRId64 ",\n", "block_size_maximum", block_maximum); /* Put this one at the end because of the stupid comma thing in JSON. */ if (size >= 0) fprintf (fp, "\t\"export-size\": %" PRIi64 ",\n", size); fprintf (fp, "\t\"export-size-str\": \"%s\"\n", size_str); if (last) fprintf (fp, "\t} ]\n"); else fprintf (fp, "\t},\n"); } string_vector_empty (&contexts); free (content); free (export_name); free (export_desc); free (uri); return true; } /* Used for displaying booleans in non-JSON output. */ static void show_boolean (const char *name, bool cond) { if (cond) ansi_colour (ANSI_FG_GREEN, fp); else ansi_colour (ANSI_FG_RED, fp); fprintf (fp, "\t%s: %s\n", name, cond ? "true" : "false"); ansi_restore (fp); } /* Used for displaying sizes in non-JSON output. */ void show_size (const char *name, int64_t size) { char size_str[HUMAN_SIZE_LONGEST]; bool human_size_flag = false; if (size > 0) { human_size (size_str, size, &human_size_flag); if (human_size_flag) fprintf (fp, "\t%s: %" PRId64 " (%s)\n", name, size, size_str); else fprintf (fp, "\t%s: %" PRId64 "\n", name, size); } } static int collect_context (void *opaque, const char *name) { string_vector *contexts = opaque; char *copy; copy = strdup (name); if (copy == NULL || string_vector_append (contexts, copy) == -1) { perror ("malloc"); exit (EXIT_FAILURE); } return 0; } /* Run the file(1) command on the first part of the export and save * the output. * * If file(1) doesn't work just return NULL because this is * best-effort. This function will exit with an error on things which * shouldn't fail, such as out of memory or creating local files. * * Must be called late, and only once per connection, as this kicks * the connection from negotiating to ready. */ static char * get_content (struct nbd_handle *nbd, int64_t size) { static char buf[8192]; char template[] = "/tmp/XXXXXX"; int fd = -1; FILE *fp = NULL; char *cmd = NULL; char *ret = NULL; ssize_t r; size_t len = 0; if (!probe_content) return NULL; if (nbd_aio_is_negotiating (nbd)) { if (nbd_opt_go (nbd) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } /* nbd-server 3.25 only reports accurate size to NBD_OPT_GO and 0 * to NBD_OPT_INFO; this hack won't fix what we report for size, * but improves what we report for contents. */ if (size == 0) { size = nbd_get_size (nbd); if (size == -1) size = 0; } } /* Write the first part of the NBD export to a temporary file. */ fd = mkstemp (template); if (fd == -1) { perror ("mkstemp"); exit (EXIT_FAILURE); } if (size > sizeof buf) size = sizeof buf; if (size && nbd_pread (nbd, buf, size, 0, 0) == -1) goto out; if (write (fd, buf, size) == -1) { perror ("write"); exit (EXIT_FAILURE); } close (fd); fd = -1; /* Run the file command. */ if (asprintf (&cmd, "file -b %s", template) == -1) { perror ("asprintf"); exit (EXIT_FAILURE); } fp = popen (cmd, "r"); if (fp == NULL) goto out; r = getline (&ret, &len, fp); if (r == -1) { free(ret); ret = NULL; goto out; } /* Remove trailing \n. */ if (r > 0 && ret[r-1] == '\n') ret[r-1] = '\0'; out: if (fd >= 0) close (fd); unlink (template); if (fp) pclose (fp); free (cmd); return ret; /* caller frees */ } libnbd-1.20.3/info/size.c0000644000175000017500000000222014616437241010565 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include "nbdinfo.h" void do_size (void) { int64_t size; size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } fprintf (fp, "%" PRIi64 "\n", size); } libnbd-1.20.3/info/uri.c0000644000175000017500000000227714573555463010437 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include "nbdinfo.h" void do_uri (void) { char *uri; uri = nbd_get_uri (nbd); if (uri == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } if (!json_output) fputs (uri, fp); else print_json_string (uri); fputc ('\n', fp); free (uri); } libnbd-1.20.3/info/utils.c0000644000175000017500000000235714525371754010773 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include "nbdinfo.h" void print_json_string (const char *str) { const unsigned char *s = (const unsigned char *)str; fputc ('"', fp); for (; *s; s++) { switch (*s) { case '\\': case '"': fputc ('\\', fp); fputc (*s, fp); break; default: if (*s < ' ') fprintf (fp, "\\u%04x", *s); else fputc (*s, fp); } } fputc ('"', fp); } libnbd-1.20.3/info/info-can.sh0000755000175000017500000000775314574541740011523 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires bash -c "$NBDKIT sh --dump-plugin | grep has_can_cache=1" # --is read-only and --can write are tested in info-is-read-only.sh # --is tls is tested in info-uri-nbds.sh and info-can-connect.sh # --can connect is tested in info-can-connect.sh # --can read is tested in info-can-read.sh # --can zero is tested in info-can-zero.sh # --cannot is tested in info-cannot.sh # --can df is hard to test. nbdkit newstyle probably always sets this # and oldstyle never, but that feels like depending a bit too much on # the implementation. # --can block-status-payload is not supported by nbdkit yet. Testing # is done during interop/block-status-payload.sh with new-enough qemu. # --has structured-reply is not a per-export setting, but rather # something set on the server as a whole. $NBDKIT -v -U - sh - \ --run '$VG nbdinfo --has structured-reply "nbd+unix:///?socket=$unixsocket"' <<'EOF' case "$1" in get_size) echo 1024 ;; pread) ;; *) exit 2 ;; esac EOF st=0 $NBDKIT -v -U - --no-sr sh - \ --run '$VG nbdinfo --has structured-reply "nbd+unix:///?socket=$unixsocket"' <<'EOF' || st=$? case "$1" in get_size) echo 1024 ;; pread) ;; *) exit 2 ;; esac EOF test $st = 2 # --has extended-headers cannot be positively tested until nbdkit gains # --no-eh support. Otherwise, it is similar to --has structured-reply. no_eh= if $NBDKIT --no-eh --help >/dev/null 2>/dev/null; then no_eh=--no-eh $NBDKIT -v -U - sh - \ --run '$VG nbdinfo --has extended-headers "nbd+unix:///?socket=$unixsocket"' <<'EOF' case "$1" in get_size) echo 1024 ;; pread) ;; *) exit 2 ;; esac EOF fi st=0 $NBDKIT -v -U - $no_eh sh - \ --run '$VG nbdinfo --has extended-headers "nbd+unix:///?socket=$unixsocket"' <<'EOF' || st=$? case "$1" in get_size) echo 1024 ;; pread) ;; *) exit 2 ;; esac EOF test $st = 2 # --can cache and --can fua require special handling because in # nbdkit-sh-plugin we must print "native" or "none". Also the can_fua # flag is only sent if the export is writable (hence can_write below). for flag in cache fua; do export flag $NBDKIT -v -U - sh - \ --run '$VG nbdinfo --can $flag "nbd+unix:///?socket=$unixsocket"' <<'EOF' case "$1" in get_size) echo 1024 ;; pread) ;; can_write) ;; can_$flag) echo native ;; *) exit 2 ;; esac EOF st=0 $NBDKIT -v -U - sh - \ --run '$VG nbdinfo --can $flag "nbd+unix:///?socket=$unixsocket"' <<'EOF' || st=$? case "$1" in get_size) echo 1024 ;; pread) ;; can_write) ;; can_$flag) echo none ;; *) exit 2 ;; esac EOF test $st = 2 done # These ones are normal booleans. for flag in fast_zero flush multi_conn trim ; do export flag $NBDKIT -v -U - sh - \ --run '$VG nbdinfo --can $flag "nbd+unix:///?socket=$unixsocket"' <<'EOF' case "$1" in get_size) echo 1024 ;; pread) ;; can_write) ;; can_$flag) exit 0 ;; *) exit 2 ;; esac EOF st=0 $NBDKIT -v -U - sh - \ --run '$VG nbdinfo --can $flag "nbd+unix:///?socket=$unixsocket"' <<'EOF' || st=$? case "$1" in get_size) echo 1024 ;; pread) ;; can_write) ;; can_$flag) exit 3 ;; *) exit 2 ;; esac EOF test $st = 2 done libnbd-1.20.3/info/info-can-connect.sh0000755000175000017500000000224714553260626013141 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x # --can connect always returns true. requires $NBDKIT --no-sr null --version $NBDKIT -v -U - null \ --run '$VG nbdinfo --can connect "nbd+unix:///?socket=$unixsocket"' # --is tls is false for unencrypted connections. st=0 $NBDKIT -v -U - null \ --run '$VG nbdinfo --is tls "nbd+unix:///?socket=$unixsocket"' || st=$? test $st = 2 libnbd-1.20.3/info/info-can-read.sh0000755000175000017500000000175514553260636012427 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x # --can read always returns true. requires $NBDKIT null --version $NBDKIT -v -U - null \ --run '$VG nbdinfo --can read "nbd+unix:///?socket=$unixsocket"' libnbd-1.20.3/info/info-can-zero.sh0000755000175000017500000000233114553260653012461 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x # nbdkit emulates zeroing so we have to use the nozero filter to test # the negative case below. requires $NBDKIT null --version requires $NBDKIT null --filter=nozero --version $NBDKIT -v -U - null \ --run '$VG nbdinfo --can zero "nbd+unix:///?socket=$unixsocket"' $NBDKIT -v -U - null \ --filter=nozero \ --run '! $VG nbdinfo --can zero "nbd+unix:///?socket=$unixsocket"' libnbd-1.20.3/info/info-cannot.sh0000755000175000017500000000253614574543424012237 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version # Read-only nbdkit should not be writable. $NBDKIT -v -U - -r memory 1M \ --run '$VG nbdinfo --cannot write "nbd+unix:///?socket=$unixsocket"' # Writable nbdkit isn't read-only. $NBDKIT -v -U - memory 1M \ --run '$VG nbdinfo --isnt read-only "nbd+unix:///?socket=$unixsocket"' # Oldstyle NBD protocol doesn't support extended headers. $NBDKIT -v -U - -o memory 1M \ --run '$VG nbdinfo --hasnt extended-headers "nbd+unix:///?socket=$unixsocket"' libnbd-1.20.3/info/info-cmd-json.sh0000755000175000017500000000227214553260742012460 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version requires jq --version out=info-cmd-json.out cleanup_fn rm -f $out $VG nbdinfo --json -- [ $NBDKIT -r memory size=1M ] > $out jq . < $out test $( jq -r '.protocol' < $out ) != "newstyle" test $( jq -r '.exports[0]."export-size"' < $out ) != "null" test $( jq -r '.exports[0].is_read_only' < $out ) = "true" libnbd-1.20.3/info/info-cmd-map-totals.sh0000755000175000017500000000252214553260756013573 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT -U - null --run 'test "$uri" != ""' requires tr --version out=info-cmd-map-totals.out cleanup_fn rm -f $out rm -f $out # The sparse allocator used by nbdkit-data-plugin uses a 32K page # size, and extents are always aligned with this. $VG nbdinfo --map --totals [ $NBDKIT data data='1 @131072 2' size=1M ] > $out cat $out if [ "$(tr -s ' ' < $out)" != " 65536 6.2% 0 data 983040 93.8% 3 hole,zero" ]; then echo "$0: unexpected output from nbdinfo --map" exit 1 fi libnbd-1.20.3/info/info-cmd-size.sh0000755000175000017500000000204314553260764012461 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version out=info-cmd-size.out cleanup_fn rm -f $out $VG nbdinfo --size [ $NBDKIT memory size=$((512*1024*1024)) ] > $out test "$(cat $out)" -eq $((512*1024*1024)) libnbd-1.20.3/info/info-is-read-only.sh0000755000175000017500000000246514553261007013250 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x # Test --is read-only and --can write. requires $NBDKIT --version requires $NBDKIT null --version $NBDKIT -U - -r null \ --run '$VG nbdinfo --is read-only "nbd+unix:///?socket=$unixsocket"' $NBDKIT -U - -r null \ --run '! $VG nbdinfo --can write "nbd+unix:///?socket=$unixsocket"' $NBDKIT -U - null \ --run '$VG nbdinfo --can write "nbd+unix:///?socket=$unixsocket"' $NBDKIT -U - null \ --run '! $VG nbdinfo --is read-only "nbd+unix:///?socket=$unixsocket"' libnbd-1.20.3/info/info-list.sh0000755000175000017500000000342614553261103011713 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --filter=exportname memory --version out=info-list.out cleanup_fn rm -f $out rm -f $out # Test twice, once with an export name not on the list,... $NBDKIT -U - -e nosuch --filter=exportname memory 1M \ exportname=hello exportname=goodbye \ exportname-strict=true exportname-list=explicit exportdesc=fixed:world \ --run '$VG nbdinfo --list "$uri"' > $out cat $out grep 'export="hello":' $out grep 'description: world' $out grep 'export-size: 1048576' $out sed -n '/contexts:/ { N; p; q; }' $out | grep . # ...and again with the export name included $NBDKIT -U - -e hello --filter=exportname memory 1M \ exportname=hello exportname=goodbye \ exportname-strict=true exportname-list=explicit exportdesc=fixed:world \ --run '$VG nbdinfo --list "$uri"' > $out cat $out grep 'export="hello":' $out grep 'description: world' $out grep 'export-size: 1048576' $out sed -n '/contexts:/ { N; p; q; }' $out | grep . libnbd-1.20.3/info/info-list-json.sh0000755000175000017500000000372514553261037012672 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --filter=exportname memory --version requires jq --version out=info-list-json.out cleanup_fn rm -f $out rm -f $out # Test twice, once with an export name not on the list,... $NBDKIT -U - -e nosuch --filter=exportname memory 1M \ exportname=hello exportname=goodbye \ exportname-strict=true exportname-list=explicit exportdesc=fixed:world \ --run '$VG nbdinfo --list --json "$uri"' > $out jq . < $out grep '"export-name": "hello"' $out grep '"description": "world"' $out grep '"export-size": 1048576' $out test $( jq -r '.exports[0].contexts[] | select(. == "base:allocation")' \ < $out ) = "base:allocation" # ...and again with the export name included $NBDKIT -U - -e hello --filter=exportname memory 1M \ exportname=hello exportname=goodbye \ exportname-strict=true exportname-list=explicit exportdesc=fixed:world \ --run '$VG nbdinfo --list --json "$uri"' > $out jq . < $out grep '"export-name": "hello"' $out grep '"description": "world"' $out grep '"export-size": 1048576' $out test $( jq -r '.exports[0].contexts[] | select(. == "base:allocation")' \ < $out ) = "base:allocation" libnbd-1.20.3/info/info-list-qemu.sh0000755000175000017500000000320414553252605012661 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $QEMU_NBD --pid-file=test.pid --version requires truncate --version img=info-list-qemu.img out=info-list-qemu.out pid=info-list-qemu.pid sock=$(mktemp -u /tmp/libnbd-test-info.XXXXXX) cleanup_fn rm -f $img $out $pid $sock rm -f $img $out $pid $sock truncate -s 1M $img $QEMU_NBD -t --socket=$sock --pid-file=$pid -x "hello" -D "world" $img & cleanup_fn kill $! wait_for_pidfile $QEMU_NBD $pid # Test twice, once with an export name not on the list,... $VG nbdinfo "nbd+unix://?socket=$sock" --list > $out cat $out grep 'export="hello":' $out grep 'description: world' $out grep 'export-size: 1048576' $out # ...and again with the export name included $VG nbdinfo "nbd+unix:///hello?socket=$sock" --list > $out cat $out grep 'export="hello":' $out grep 'description: world' $out grep 'export-size: 1048576' $out libnbd-1.20.3/info/info-list-json-qemu.sh0000755000175000017500000000332714553252572013641 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $QEMU_NBD --pid-file=test.pid --version requires truncate --version requires jq --version img=info-list-json-qemu.img out=info-list-json-qemu.out pid=info-list-json-qemu.pid sock=$(mktemp -u /tmp/libnbd-test-info.XXXXXX) cleanup_fn rm -f $img $out $pid $sock rm -f $img $out $pid $sock truncate -s 1M $img $QEMU_NBD -t --socket=$sock --pid-file=$pid -x "hello" -D "world" $img & cleanup_fn kill $! wait_for_pidfile $QEMU_NBD $pid # Test twice, once with an export name not on the list,... $VG nbdinfo "nbd+unix://?socket=$sock" --list --json > $out jq . < $out grep '"export-name": "hello"' $out grep '"description": "world"' $out grep '"export-size": 1048576' $out # ...and again with the export name included $VG nbdinfo "nbd+unix:///hello?socket=$sock" --list --json > $out jq . < $out grep '"export-name": "hello"' $out grep '"description": "world"' $out grep '"export-size": 1048576' $out libnbd-1.20.3/info/info-list-uris.sh0000755000175000017500000000343014553261060012670 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT file --version case $($NBDKIT file --version 2>&1) in *1.34.[012]* ) echo "$0: skipping known double-free bug in $NBDKIT file dir=" exit 77 esac # This test requires nbdkit >= 1.22. minor=$( $NBDKIT --dump-config | grep ^version_minor | cut -d= -f2 ) requires test $minor -ge 22 out=info-list-uris.out cleanup_fn rm -f $out # nbdinfo --list is not very stable in the particular case where # exports come and go while it is running. This happens if we set the # directory to be the current directory since other tests create # temporary files here. So point this to a more stable directory. $NBDKIT -U - file dir=$srcdir/../examples \ --run '$VG nbdinfo --list "$uri"' > $out cat $out # We expect to see URIs corresponding to some well-known files # (ie. exports) in the examples directory. grep "uri: nbd+unix:///LICENSE-FOR-EXAMPLES?socket=" $out grep "uri: nbd+unix:///get-size.c?socket=" $out libnbd-1.20.3/info/info-json.sh0000755000175000017500000000254314553261016011713 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version requires $NBDKIT -U - null --run 'test "$uri" != ""' requires jq --version out=info-json.out cleanup_fn rm -f $out $NBDKIT -U - -r memory size=1M --run '$VG nbdinfo --json "$uri"' > $out jq . < $out test $( jq -r '.protocol' < $out ) != "newstyle" test $( jq -r '.exports[0]."export-size"' < $out ) != "null" test $( jq -r '.exports[0].is_read_only' < $out ) = "true" test $( jq -r '.exports[0].contexts[] | select(. == "base:allocation")' \ < $out ) = "base:allocation" libnbd-1.20.3/info/info-oldstyle.sh0000755000175000017500000000211214553261225012573 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version out=info-oldstyle.out cleanup_fn rm -f $out $NBDKIT --oldstyle -U - memory size=1M \ --run '$VG nbdinfo "nbd+unix:///?socket=$unixsocket"' > $out cat $out grep "protocol: oldstyle" $out libnbd-1.20.3/info/info-packets.sh0000755000175000017500000000322514553261243012374 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT --no-sr memory --version out=info-packets.out cleanup_fn rm -f $out # Older nbdkit does not support extended headers; --no-eh is a reliable # witness of whether nbdkit is new enough. no_eh= if $NBDKIT --no-eh --help >/dev/null 2>/dev/null; then no_eh=--no-eh fi $NBDKIT --no-sr -U - memory size=1M \ --run '$VG nbdinfo "nbd+unix:///?socket=$unixsocket"' > $out cat $out grep "protocol: .*using simple packets" $out $NBDKIT $no_eh -U - memory size=1M \ --run '$VG nbdinfo "nbd+unix:///?socket=$unixsocket"' > $out cat $out grep "protocol: .*using structured packets" $out if test x != "x$no_eh"; then $NBDKIT -U - memory size=1M \ --run '$VG nbdinfo "nbd+unix:///?socket=$unixsocket"' > $out cat $out grep "protocol: .*using extended packets" $out fi libnbd-1.20.3/info/info-null.sh0000755000175000017500000000211514553261216011711 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT null --version requires $NBDKIT -U - null --run 'test "$uri" != ""' out=info-null.out cleanup_fn rm -f $out $NBDKIT -U - null \ --run '$VG nbdinfo --list "$uri"' > $out cat $out grep 'export-size: 0$' $out libnbd-1.20.3/info/info-size.sh0000755000175000017500000000212414553261251011710 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version out=info-size.out cleanup_fn rm -f $out $NBDKIT -U - memory size=$((512*1024*1024)) \ --run '$VG nbdinfo --size "nbd+unix:///?socket=$unixsocket"' > $out test "$(cat $out)" -eq $((512*1024*1024)) libnbd-1.20.3/info/info-text.sh0000755000175000017500000000244114553261262011726 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version # This test requires nbdkit >= 1.12. minor=$( $NBDKIT --dump-config | grep ^version_minor | cut -d= -f2 ) requires test $minor -ge 12 out=info-text.out cleanup_fn rm -f $out $NBDKIT -U - memory size=1M \ --run '$VG nbdinfo "nbd+unix:///?socket=$unixsocket"' > $out cat $out grep "export-size: $((1024*1024))" $out grep "uri: nbd+unix:///?socket=" $out sed -n '/contexts:/ { N; p; q; }' $out | grep . libnbd-1.20.3/info/info-uri.sh0000755000175000017500000000234514573057745011557 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # This tests the --uri parameter. # # Note that 'info-uri-quoting.sh' is a more thorough test of the URI # feature in general (eg. of quoting). . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version out=info-uri2.out cleanup_fn rm -f $out $NBDKIT -U - memory size=$((512*1024*1024)) \ --run '$VG nbdinfo --uri "nbd+unix:///?socket=$unixsocket"' > $out cat $out grep '^nbd+unix:///?socket=' $out libnbd-1.20.3/info/info-uri-json.sh0000755000175000017500000000217614573057745012530 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # This tests --uri + --json. . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version out=info-uri-json.out cleanup_fn rm -f $out $NBDKIT -U - memory size=$((512*1024*1024)) \ --run '$VG nbdinfo --uri --json "nbd+unix:///?socket=$unixsocket"' > $out cat $out grep '^"nbd+unix:///?socket=' $out libnbd-1.20.3/info/info-uri-nbds.sh0000755000175000017500000000353414553261300012462 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test nbds:// URIs on the command line and in output. . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT null --version requires $NBDKIT --tls-verify-peer -U - null --run 'exit 0' requires jq --version # Requires that the test certificates were created. pki=../tests/pki requires test -f $pki/stamp-pki d=info-uri-nbds.d out=info-uri-nbds.out rm -f $out rm -rf $d cleanup_fn rm -f $out cleanup_fn rm -rf $d # Run nbdkit with TLS. # # nbdkit does not add tls-certificates to the $uri it generates # (because there's not really a good way to know if the resulting URI # would be valid) so we need to construct a URI here. export pki $NBDKIT -U - --tls=require --tls-verify-peer --tls-certificates=$pki \ null size=1M \ --run '$VG nbdinfo --json "nbds+unix:///?socket=$unixsocket&tls-certificates=$pki" && $VG nbdinfo --is tls "nbds+unix:///?socket=$unixsocket&tls-certificates=$pki"' > $out cat $out jq . < $out [[ $( jq -r '.exports[0] | .uri' < $out ) =~ \ ^nbds\+unix:///\?socket=.*\&tls-certificates=$pki ]] libnbd-1.20.3/info/info-uri-quoting.sh0000755000175000017500000000415014573057745013237 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Tests various aspects of the .uri field. . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT file --version case $($NBDKIT file --version 2>&1) in *1.34.[012]* ) echo "$0: skipping known double-free bug in $NBDKIT file dir=" exit 77 esac requires $NBDKIT -U - null --run 'test "$uri" != ""' requires jq --version # This test requires nbdkit >= 1.22. minor=$( $NBDKIT --dump-config | grep ^version_minor | cut -d= -f2 ) requires test $minor -ge 22 d=info-uri.d out=info-uri.out rm -f $out rm -rf $d cleanup_fn rm -f $out cleanup_fn rm -rf $d # Create a test directory containing various known files. mkdir $d touch $d/"%%" ;# requires percent-escaping touch $d/"hello world" ;# requires escaping touch $d/"リソース" ;# tests UTF-8 support, broken in earlier nbdinfo $NBDKIT -U - -r file dir=$d --run '$VG nbdinfo --json --list "$uri"' > $out cat $out jq . < $out [[ $( jq -r '.exports[] | select(."export-name" == "%%") | .uri' < $out ) \ =~ ^nbd\+unix:///%25%25\?socket= ]] [[ $( jq -r '.exports[] | select(."export-name" == "hello world") | .uri' < $out ) \ =~ ^nbd\+unix:///hello(%20|\+)world\?socket= ]] [[ $( jq -r '.exports[] | select(."export-name" == "リソース") | .uri' < $out ) \ =~ ^nbd\+unix:///%E3%83%AA%E3%82%BD%E3%83%BC%E3%82%B9\?socket= ]] libnbd-1.20.3/info/info-description.sh0000755000175000017500000000225614553260775013301 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --filter=exportname memory --version out=info-description.out cleanup_fn rm -f $out rm -f $out $NBDKIT -U - --filter=exportname memory 1M \ default-export=hello exportdesc=fixed:world \ --run '$VG nbdinfo "$uri"' > $out cat $out grep 'export="hello":' $out grep 'description: world' $out grep 'export-size: 1048576' $out libnbd-1.20.3/info/info-description-qemu.sh0000755000175000017500000000262514553252521014234 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $QEMU_NBD --pid-file=test.pid --version requires truncate --version img=info-description-qemu.img out=info-description-qemu.out pid=info-description-qemu.pid sock=$(mktemp -u /tmp/libnbd-test-info.XXXXXX) cleanup_fn rm -f $img $out $pid $sock rm -f $img $out $pid $sock truncate -s 1M $img $QEMU_NBD -f raw -t --socket=$sock --pid-file=$pid -x "hello" -D "world" $img & cleanup_fn kill $! wait_for_pidfile $QEMU_NBD $pid $VG nbdinfo "nbd+unix:///hello?socket=$sock" > $out cat $out grep 'export="hello":' $out grep 'description: world' $out grep 'export-size: 1048576' $out libnbd-1.20.3/info/info-map-base-allocation.sh0000755000175000017500000000262014553261166014554 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT -U - null --run 'test "$uri" != ""' requires tr --version out=info-base-allocation.out cleanup_fn rm -f $out rm -f $out # The sparse allocator used by nbdkit-data-plugin uses a 32K page # size, and extents are always aligned with this. $NBDKIT -U - data data='1 @131072 2' size=1M \ --run '$VG nbdinfo --map "$uri"' > $out cat $out if [ "$(tr -s ' ' < $out)" != " 0 32768 0 data 32768 98304 3 hole,zero 131072 32768 0 data 163840 884736 3 hole,zero" ]; then echo "$0: unexpected output from nbdinfo --map" exit 1 fi libnbd-1.20.3/info/info-map-base-allocation-json.sh0000755000175000017500000000313514553261116015520 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT -U - null --run 'test "$uri" != ""' requires jq --version out=info-base-allocation-json.out cleanup_fn rm -f $out rm -f $out # The sparse allocator used by nbdkit-data-plugin uses a 32K page # size, and extents are always aligned with this. $NBDKIT -U - data data='1 @131072 2' size=1M \ --run '$VG nbdinfo --map --json "$uri"' > $out cat $out jq . < $out test $( jq -r '.[0].offset' < $out ) -eq 0 test $( jq -r '.[0].length' < $out ) -eq 32768 test $( jq -r '.[0].type' < $out ) -eq 0 test $( jq -r '.[0].description' < $out ) = "data" test $( jq -r '.[3].offset' < $out ) -eq 163840 test $( jq -r '.[3].length' < $out ) -eq 884736 test $( jq -r '.[3].type' < $out ) -eq 3 test $( jq -r '.[3].description' < $out ) = "hole,zero" libnbd-1.20.3/info/info-map-base-allocation-large.sh0000755000175000017500000000274214553261131015641 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT -U - null --run 'test "$uri" != ""' requires tr --version out=info-base-allocation-large.out cleanup_fn rm -f $out rm -f $out # The sparse allocator used by nbdkit-data-plugin uses a 32K page # size, and extents are always aligned with this. $NBDKIT -U - data data='1 @131072 2 @6442450944 3' size=8G \ --run '$VG nbdinfo --map "$uri"' > $out cat $out if [ "$(tr -s ' ' < $out)" != " 0 32768 0 data 32768 98304 3 hole,zero 131072 32768 0 data 163840 6442287104 3 hole,zero 6442450944 32768 0 data 6442483712 2147450880 3 hole,zero" ]; then echo "$0: unexpected output from nbdinfo --map" exit 1 fi libnbd-1.20.3/info/info-map-base-allocation-weird.sh0000755000175000017500000000301614553261145015661 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT -U - null --run 'test "$uri" != ""' requires $NBDKIT sh --version requires tr --version out=info-base-allocation-weird.out cleanup_fn rm -f $out rm -f $out # This is a "weird" server that returns extents that are all 1 byte. $NBDKIT -U - sh - \ --run '$VG nbdinfo --map "$uri"' > $out <<'EOF' case "$1" in get_size) echo 32 ;; pread) dd if=/dev/zero count=$3 iflag=count_bytes ;; can_extents) exit 0 ;; extents) echo $4 1 `[ $4 -ge 16 ] && [ $4 -le 19 ]; echo $?`;; *) exit 2 ;; esac EOF cat $out if [ "$(tr -s ' ' < $out)" != " 0 16 1 hole 16 4 0 data 20 12 1 hole" ]; then echo "$0: unexpected output from nbdinfo --map" exit 1 fi libnbd-1.20.3/info/info-map-base-allocation-zero.sh0000755000175000017500000000220614553261155015527 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT -U - null --run 'test "$uri" != ""' out=info-base-allocation-zero.out cleanup_fn rm -f $out rm -f $out $NBDKIT -U - null --run '$VG nbdinfo --map "$uri"' > $out cat $out if [ "$(cat $out)" != "" ]; then echo "$0: unexpected output from nbdinfo --map" exit 1 fi libnbd-1.20.3/info/info-map-qemu-dirty-bitmap.sh0000755000175000017500000000377514553252635015106 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Attempt to test using nbdinfo --map=qemu:dirty-bitmap. # See also interop/dirty-bitmap.{c,sh} . ../tests/functions.sh set -e set -x requires qemu-img bitmap --help requires qemu-io --version requires $QEMU_NBD -B test --pid-file=test.pid --version requires tr --version f=info-map-qemu-dirty-bitmap.qcow2 out=info-map-qemu-dirty-bitmap.out cleanup_fn rm -f $f $out rm -f $f $out # Create file with intentionally different written areas vs. dirty areas qemu-img create -f qcow2 $f 1M qemu-io -f qcow2 -c 'w 0 64k' $f qemu-img bitmap --add --enable -f qcow2 $f bitmap0 qemu-io -f qcow2 -c 'w 64k 64k' -c 'w -z 512k 64k' $f # We have to run qemu-nbd and attempt to clean it up afterwards. sock=$(mktemp -u /tmp/libnbd-test-info.XXXXXX) pid=info-map-qemu-dirty-bitmap.pid cleanup_fn rm -f $sock $pid rm -f $sock $pid $QEMU_NBD -t --socket=$sock --pid-file=$pid -f qcow2 -B bitmap0 $f & cleanup_fn kill $! wait_for_pidfile $QEMU_NBD $pid $VG nbdinfo --map=qemu:dirty-bitmap:bitmap0 "nbd+unix://?socket=$sock" > $out cat $out if [ "$(tr -s ' ' < $out)" != " 0 65536 0 clean 65536 65536 1 dirty 131072 393216 0 clean 524288 65536 1 dirty 589824 458752 0 clean" ]; then echo "$0: unexpected output from nbdinfo --map" exit 1 fi libnbd-1.20.3/info/info-map-qemu-allocation-depth.sh0000755000175000017500000000452114553252621015711 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Attempt to test using nbdinfo --map=qemu:dirty-bitmap. # See also interop/dirty-bitmap.{c,sh} . ../tests/functions.sh set -e set -x requires qemu-img --version requires qemu-io --version requires $QEMU_NBD -A --pid-file=test.pid --version requires tr --version base=info-map-qemu-allocation-depth f1=$base.1.qcow2 f2=$base.2.qcow2 f3=$base.3.qcow2 f4=$base.4.qcow2 out=$base.out cleanup_fn rm -f $f1 $f2 $f3 $f4 $out rm -f $f1 $f2 $f3 $f4 $out # Create chain of files: # f1: XXXX---- # f2: --XXXX-- # f3: -XX--XX- # f4: -X---X-- # depth: 41233120 qemu-img create -f qcow2 $f1 8M qemu-io -f qcow2 -c 'w 0 4M' $f1 qemu-img create -f qcow2 -b $f1 -F qcow2 $f2 qemu-io -f qcow2 -c 'w 2M 4M' $f2 qemu-img create -f qcow2 -b $f2 -F qcow2 $f3 qemu-io -f qcow2 -c 'w 1M 2M' -c 'w 5M 2M' $f3 qemu-img create -f qcow2 -b $f3 -F qcow2 $f4 qemu-io -f qcow2 -c 'w 1M 1M' -c 'w 5M 1M' $f4 # We have to run qemu-nbd and attempt to clean it up afterwards. sock=$(mktemp -u /tmp/libnbd-test-info.XXXXXX) pid=$base.pid cleanup_fn rm -f $sock $pid rm -f $sock $pid $QEMU_NBD -t --socket=$sock --pid-file=$pid -f qcow2 -A $f4 & cleanup_fn kill $! wait_for_pidfile $QEMU_NBD $pid $VG nbdinfo --map=qemu:allocation-depth "nbd+unix://?socket=$sock" > $out cat $out if [ "$(tr -s ' ' < $out)" != "\ 0 1048576 4 backing depth 4 1048576 1048576 1 local 2097152 1048576 2 backing depth 2 3145728 2097152 3 backing depth 3 5242880 1048576 1 local 6291456 1048576 2 backing depth 2 7340032 1048576 0 absent" ]; then echo "$0: unexpected output from nbdinfo --map" exit 1 fi libnbd-1.20.3/info/info-map-totals.sh0000755000175000017500000000255014553261207013023 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT -U - null --run 'test "$uri" != ""' requires tr --version out=info-map-totals.out cleanup_fn rm -f $out rm -f $out # The sparse allocator used by nbdkit-data-plugin uses a 32K page # size, and extents are always aligned with this. $NBDKIT -U - data data='1 @131072 2' size=1M \ --run '$VG nbdinfo --map --totals "$uri"' > $out cat $out if [ "$(tr -s ' ' < $out)" != " 65536 6.2% 0 data 983040 93.8% 3 hole,zero" ]; then echo "$0: unexpected output from nbdinfo --map" exit 1 fi libnbd-1.20.3/info/info-map-totals-json.sh0000755000175000017500000000314114553261176013774 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT -U - null --run 'test "$uri" != ""' requires jq --version out=info-map-totals-json.out cleanup_fn rm -f $out rm -f $out # The sparse allocator used by nbdkit-data-plugin uses a 32K page # size, and extents are always aligned with this. $NBDKIT -U - data data='1 @131072 2' size=1M \ --run '$VG nbdinfo --map --totals --json "$uri"' > $out cat $out jq . < $out test $( jq -r '.[0].size' < $out ) -eq 65536 test $( jq -r '.[0].percent' < $out ) = "6.25" test $( jq -r '.[0].type' < $out ) -eq 0 test $( jq -r '.[0].description' < $out ) = "data" test $( jq -r '.[1].size' < $out ) -eq 983040 test $( jq -r '.[1].percent' < $out ) = "93.75" test $( jq -r '.[1].type' < $out ) -eq 3 test $( jq -r '.[1].description' < $out ) = "hole,zero" libnbd-1.20.3/info/info-atomic-output.sh0000755000175000017500000000221314525371754013560 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x # Eval plugin was added in 1.18. # --run $uri option was added in 1.14. # So checking for the eval plugin is sufficient. requires nbdkit eval --version out=info-atomic-output.out cleanup_fn rm -f $out nbdkit -U - eval open='echo EIO fail >&2; exit 1' \ --run '$VG nbdinfo --size "$uri"' > $out ||: test ! -s $out libnbd-1.20.3/info/nbdinfo.pod0000644000175000017500000003120514574543325011603 =head1 NAME nbdinfo - display information and metadata about NBD servers and exports =head1 SYNOPSIS nbdinfo [--json] NBD C is an NBD URI or subprocess: NBD := nbd://... | nbd+unix:// (or other URI formats) | [ CMD ARGS ... ] =for paragraph nbdinfo --size [--json] NBD =for paragraph nbdinfo --uri [--json] NBD =for paragraph nbdinfo --is read-only|rotational NBD nbdinfo --isnt read-only|rotational NBD =for paragraph nbdinfo --can cache|connect|... NBD nbdinfo --cannot cache|connect|... NBD =for paragraph nbdinfo --map [--totals] [--json] NBD =for paragraph nbdinfo -L|--list [--json] NBD =for paragraph nbdinfo --help =for paragraph nbdinfo --version =head1 DESCRIPTION nbdinfo displays information and metadata about an NBD server. The single required parameter can be the NBD URI of the server (see L): $ nbdinfo nbd://localhost protocol: newstyle-fixed without TLS, using structured packets export="": export-size: 1048576 (1M) content: data uri: nbd://localhost:10809/ is_rotational: false is_read_only: false can_cache: true can_df: true can_fast_zero: true can_flush: true can_fua: true can_multi_conn: true can_trim: true can_zero: true block_size_minimum: 1 block_size_preferred: 4096 (4K) block_size_maximum: 33554432 (32M) For an NBD server on a local Unix domain socket you would use a command such as this (with similar output to above): $ nbdinfo "nbd+unix:///?socket=/tmp/unixsock" Or you can run the NBD server as a subprocess (see section L below): $ nbdinfo -- [ qemu-nbd -r -f qcow2 file.qcow2 ] =head2 JSON output To display the output as JSON (eg. for scripting with L) add the I<--json> parameter: $ nbdinfo --json nbd://localhost | jq . { "protocol": "newstyle-fixed", "TLS": false, "structured": true, "extended": false, "exports": [ { "export-name": "", "content": "DOS/MBR boot sector; partition 1 : ID=0xc, start-CHS (0x3ff,254,63), end-CHS (0x3ff,254,63), startsector 2048, 4148704 sectors", "uri": "nbd://localhost:10809/", "is_rotational": false, "is_read_only": true, "can_cache": true, "can_df": true, "can_fast_zero": false, "can_flush": false, "can_fua": false, "can_multi_conn": true, "can_trim": false, "can_zero": false, "block_size_minimum": 1, "block_size_preferred": 4096, "block_size_maximum": 33554432, "export-size": 2125119488, "export-size-str": "2075312K" } ] } =head2 Size To display only the size in bytes of the NBD export (useful for scripting) use the I<--size> parameter: $ nbdinfo --size nbd://localhost 1048576 =for paragraph $ nbdinfo --size [ nbdkit null 1M ] 1048576 =head2 URI To display the canonical URI: $ nbdinfo --uri nbd://localhost nbd://localhost:10809/ =head2 Test for flags Use one of the I<--can>, I<--is> or I<--has> options below to test NBD flags. The command does not print anything. Instead it exits with success (S) if true, or failure (S) if false. (Other exit codes indicate an error querying the flag). I<--cannot>, I<--isnt> and I<--hasnt> negate the test. You can use it in shell scripts like this: if nbdinfo --is read-only nbd://localhost || nbdinfo --cannot trim nbd://localhost then error "the device must support writing and trimming" fi =over 4 =item nbdinfo --is read-only URI Test if the server export is read-only. =item nbdinfo --can write URI For convenience this is the opposite of I<--is read-only>. =item nbdinfo --can read URI All NBD servers must support read, so this always exits with success (unless there is a failure connecting to the URI). =item nbdinfo --can connect URI Test if we can connect to the NBD URI. =item nbdinfo --is tls URI Test if the NBD URI connection is using TLS. =item nbdinfo --has structured-reply URI Test if server has support for structured replies (a prerequisite for supporting block status commands). =item nbdinfo --has extended-headers URI Test if server supports extended headers (a prerequisite for supporting 64-bit commands; implies structured replies as well). =item nbdinfo --is rotational URI Test if the server export is backed by something which behaves like a rotating disk: accessing nearby blocks may be faster than random access and requests should be sorted to improve performance. Many servers do not or cannot report this accurately. =item nbdinfo --can block-status-payload URI Test if the server export has support for passing a client payload to limit the response to a block status command. =item nbdinfo --can cache URI =item nbdinfo --can df URI =item nbdinfo --can fast-zero URI =item nbdinfo --can flush URI =item nbdinfo --can fua URI =item nbdinfo --can multi-conn URI =item nbdinfo --can trim URI =item nbdinfo --can zero URI Test other properties of the NBD server export. =back In fact I<--can>/I<--is>/I<--has>, and I<--cannot>/I<--isnt>/I<--hasnt> are synonyms, you can use them interchangeably. =head2 Map To show a map of which areas of the disk are allocated and sparse, use the I<--map> option: $ nbdinfo --map nbd://localhost/ 0 1048576 0 data 1048576 1048576 3 hole,zero The fields are: start, size, type, description (optional). The type field is an integer showing the raw value from the NBD protocol. For some maps nbdinfo knows how to translate the type into a printable description. To get parseable JSON output, add I<--json>: $ nbdinfo --map --json nbd://localhost/ [{ "offset": 0, "length": 1048576, "type": 0, "description": "data" }, { "offset": 1048576, "length": 1048576, "type": 3, "description": "hole,zero" }] By default this shows the C<"base:allocation"> map, but you can show other maps too: $ nbdinfo --map=qemu:dirty-bitmap:bitmap nbd://localhost/ 0 1048576 1 dirty For more information on NBD maps, see I in the NBD protocol. =head2 Map totals Using S> performs the same operation as I<--map> but displays a summary of the total size of each type of allocation, in bytes and as a percentage (of the virtual size of the export). This is useful for estimating how much real storage is used on the server, or might be required when copying a sparse image with L. In the example below, half (50.0%) of the disk is allocated data and half is unallocated: $ nbdinfo --map --totals nbd://localhost/ 1048576 50.0% 0 data 1048576 50.0% 3 hole,zero The fields are: total size in bytes, percentage of the virtual size, type, description (optional). You can also get the same information in parseable form using I<--json>: $ nbdinfo --map --totals --json nbd://localhost/ [{ "size": 1048576, "percent": 50, "type": 0, "description": "data" }, { "size": 1048576, "percent": 50, "type": 3, "description": "hole,zero" }] As with the I<--map> option, by default this shows the C<"base:allocation"> map, but you can show the summary for other maps. =head2 List all exports To list all the exports available on an NBD server use the I<--list> (I<-L>) option. To get parseable JSON output, add I<--json>. For example: $ nbdkit file dir=. --run 'nbdinfo --list "$uri"' protocol: newstyle-fixed without TLS export="Fedora-Workstation-Live-x86_64-29-1.2.iso": export-size: 1931476992 (1842M) uri: nbd://localhost:10809/Fedora-Workstation-Live-x86_64-29-1.2.iso [...] export="debian-10.4.0-amd64-DVD-1.iso": export-size: 3955556352 (3862848K) uri: nbd://localhost:10809/debian-10.4.0-amd64-DVD-1.iso [...] =head2 Subprocess nbdinfo can also run an NBD server as a subprocess. This requires an NBD server which understands systemd socket activation, such as L or L. All the usual nbdinfo modes can be used. For example, to give general information or display the map of a qcow2 file: nbdinfo -- [ qemu-nbd -r -f qcow2 file.qcow2 ] =for paragraph nbdinfo --map -- [ qemu-nbd -r -f qcow2 file.qcow2 ] Note that S> are separate parameters, and must be surrounded by spaces. C<--> separates nbdinfo parameters from subprocess parameters. =head2 Alternative tools You could use S> (see L) to query a single export from an NBD server. S> (see L) can list NBD exports. L or the L API can be used for more complex queries. =head1 OPTIONS =over 4 =item B<--help> Display brief command line help and exit. =item B<--can block-status-payload> =item B<--can cache> =item B<--can connect> =item B<--can df> =item B<--can fast-zero> =item B<--can flush> =item B<--can fua> =item B<--can multi-conn> =item B<--can read> =item B<--can trim> =item B<--can write> =item B<--can zero> Test properties of the NBD server export. The command does not print anything. Instead it exits with success (S) if true, or failure (S) if false. (Other exit codes indicate an error querying the flag). For further information see the L and the following libnbd functions: L, L, L, L, L, L, L, L, L, L. =item B<--cannot> flag Test the negation of flag. =item B<--color> =item B<--colour> =item B<--no-color> =item B<--no-colour> Enable or disable ANSI colours in output. By default we use colours if the output seems to be a terminal, and disable them if not. =item B<--content> =item B<--no-content> Mostly the information displayed comes from the metadata sent by the NBD server during the handshake. However nbdinfo also downloads a small amount of data from the beginning of the export to try to probe the content with L. When I using I<--list>, the default is I<--content>, ie. probing the content. To prevent content probing, use I<--no-content>. When using I<--list>, the default is I<--no-content> (since downloading from each export is expensive). To enable content probing use I<--list --content>. =item B<--has extended-headers> =item B<--has structured-reply> Test properties of the NBD server connection. The command does not print anything. Instead it exits with success (S) if true, or failure (S) if false. (Other exit codes indicate an error querying the flag). For further information see the L and the following libnbd functions: L, L. =item B<--hasnt> flag Test the negation of flag. =item B<--is read-only> =item B<--is rotational> =item B<--is tls> Test if the NBD server export is read-only and rotational, or whether the connection itself is using TLS. The command does not print anything. Instead it exits with success (S) if true, or failure (S) if false. (Other exit codes indicate an error querying the flag). For further information see the L and the following libnbd functions: L, L, L. =item B<--isnt> flag Test the negation of flag. =item B<--json> The output is displayed in JSON format. =item B<-L> =item B<--list> List all the exports on an NBD server. The export name in the NBD URI is ignored. =item B<--map> =item B<--map=>MAP Display the map (usually whether parts of the disk are allocated or sparse) of the given export. This displays the C<"base:allocation"> map by default, you can choose a different map with the optional parameter. See the L section above. =item B<--map> B<--totals> =item B<--map=>MAP B<--totals> The same as I<--map>, but displays a summary of the total size of each type of allocation. See the L section above. =item B<--size> Display only the size in bytes of the export. =item B<--uri> Display only the canonical URI. If combined with I<--json> then the output is a JSON-quoted string. =item B<-V> =item B<--version> Display the package name and version and exit. =back =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Richard W.M. Jones Eric Blake =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/info/test-long-options.sh0000755000175000017500000000216014525371754013423 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdinfo --long-options looks sane. . ../tests/functions.sh set -e set -x output=test-long-options.out cleanup_fn rm -f $output $VG nbdinfo --long-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- --list $output grep -- --map $output grep -- --version $output libnbd-1.20.3/info/test-short-options.sh0000755000175000017500000000212214525371754013621 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdinfo --short-options looks sane. . ../tests/functions.sh set -e set -x output=test-short-options.out cleanup_fn rm -f $output $VG nbdinfo --short-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- -L $output grep -- -V $output libnbd-1.20.3/info/test-version.sh0000755000175000017500000000212414525371754012460 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdinfo --version looks sane. fail=0 output=$($VG nbdinfo --version) if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi if [ "$output" != "nbdinfo $EXPECTED_VERSION libnbd $EXPECTED_VERSION" ]; then echo "$0: unexpected output" fail=1 fi echo "$output" exit $fail libnbd-1.20.3/copy/0000755000175000017500000000000014675532654007563 5libnbd-1.20.3/copy/Makefile.am0000644000175000017500000000742514525371754011543 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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@HAVE_LIBXML2_TRUE@check-root: @HAVE_LIBXML2_TRUE@ $(MAKE) check -j1 TESTS="$(ROOT_TESTS)" # Tell versions [3.59,3.63) of GNU make to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: libnbd-1.20.3/copy/nbdcopy.h0000644000175000017500000002130114616437241011276 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef NBDCOPY_H #define NBDCOPY_H #include #include #include #include #include #include "vector.h" #define MIN_REQUEST_SIZE 4096 #define MAX_REQUEST_SIZE (32 * 1024 * 1024) /* This must be a multiple of MAX_REQUEST_SIZE. Larger is better up * to a point, but it reduces the effectiveness of threads if the work * ranges are large compared to the virtual file size. */ #define THREAD_WORK_SIZE (128 * 1024 * 1024) /* Abstracts the input (src) and output (dst) parameters on the * command line. */ struct rw { struct rw_ops *ops; /* Operations. */ const char *name; /* Printable name, for error messages etc. */ int64_t size; /* May be -1 for streams. */ uint64_t preferred; /* Preferred block size. */ /* Followed by private data for the particular subtype. */ }; /* Source and destination. */ extern struct rw *src, *dst; typedef enum { READING, WRITING } direction; /* Create subtypes. */ extern struct rw *file_create (const char *name, int fd, const struct stat *statbuf, direction d); extern struct rw *nbd_rw_create_uri (const char *name, const char *uri, direction d); extern struct rw *nbd_rw_create_subprocess (const char **argv, size_t argc, direction d); extern struct rw *null_create (const char *name); extern struct rw *pipe_create (const char *name, int fd); /* Underlying data buffers. */ struct buffer { char *data; /* Pointer to base address of allocation. */ unsigned refs; /* Reference count. */ }; /* Slice used to share whole or part of underlying buffers. */ struct slice { size_t len; /* Length of slice. */ size_t base; /* Start of slice relative to buffer. */ struct buffer *buffer; /* Underlying allocation (may be shared * or NULL). */ }; #define slice_ptr(slice) ((slice).buffer->data + (slice).base) /* Worker state used by multi-threaded copying. */ struct worker { pthread_t thread; size_t index; /* The number of bytes queued for in flight read and write requests. * Tracking this allows issuing many small requests, but limiting the * number of large requests. */ size_t queue_size; }; /* Commands for asynchronous operations in flight. * * We don't store the command type (read/write/zero/etc) because it is * implicit in the function being called and because commands * naturally change from read -> write/zero/etc as they progress. * * slice.buffer may be NULL for commands (like zero) that have no * associated data. * * A separate set of commands, slices and buffers is maintained per * thread so no locking is necessary. */ struct command { uint64_t offset; /* Offset relative to start of disk. */ struct slice slice; /* Data slice. */ struct worker *worker; /* The worker owning this command. */ }; /* List of extents for rw->ops->get_extents. */ struct extent { uint64_t offset; uint64_t length; bool zero; }; DEFINE_VECTOR_TYPE (extent_list, struct extent); /* The operations struct hides some of the differences between local * file, NBD and pipes from the copying code. * * All these functions exit on error so they do not have to return * error indications. */ struct rw_ops { /* Debug string. */ const char *ops_name; /* Close the connection and free up associated resources. */ void (*close) (struct rw *rw); /* Return true if this is a read-only connection. */ bool (*is_read_only) (struct rw *rw); /* For source only, does it support reading extents? */ bool (*can_extents) (struct rw *rw); /* Return true if the connection can do multi-conn. This is true * for files, false for streams, and passed through for NBD. */ bool (*can_multi_conn) (struct rw *rw); /* For multi-conn capable backends, before copying we must call this * to begin multi-conn. For NBD this means opening the additional * connections. */ void (*start_multi_conn) (struct rw *rw); /* Truncate, only called on output files. This callback can be NULL * for types that don't support this. */ void (*truncate) (struct rw *rw, int64_t size); /* Flush pending writes to permanent storage. */ void (*flush) (struct rw *rw); /* Synchronous I/O operations. * * synch_read may not return the requested length of data (eg. for * pipes) and returns 0 at end of file. */ size_t (*synch_read) (struct rw *rw, void *data, size_t len, uint64_t offset); void (*synch_write) (struct rw *rw, const void *data, size_t len, uint64_t offset); /* Synchronously zero. If not possible, returns false. */ bool (*synch_zero) (struct rw *rw, uint64_t offset, uint64_t count, bool allocate); /* Asynchronous I/O operations. These start the operation and call * 'cb' on completion. 'cb' will return 1, for auto-retiring with * asynchronous libnbd calls. * * The file_ops versions are actually implemented synchronously, but * still call 'cb'. * * These always read/write the full amount. These functions cannot * be called on pipes because pipes force --synchronous mode. */ void (*asynch_read) (struct rw *rw, struct command *command, nbd_completion_callback cb); void (*asynch_write) (struct rw *rw, struct command *command, nbd_completion_callback cb); /* Asynchronously zero. command->slice.buffer is not used. If not possible, * returns false. 'cb' must be called only if returning true. */ bool (*asynch_zero) (struct rw *rw, struct command *command, nbd_completion_callback cb, bool allocate); /* Number of asynchronous commands in flight for a particular thread. */ unsigned (*in_flight) (struct rw *rw, size_t index); /* Get polling file descriptor and direction, and notify read/write. * For sources which cannot be polled (such as files and pipes) * get_polling_fd returns fd == -1 (NOT an error), and the * asynch_notify_* functions are no-ops. */ void (*get_polling_fd) (struct rw *rw, size_t index, int *fd_rtn, int *direction_rtn); void (*asynch_notify_read) (struct rw *rw, size_t index); void (*asynch_notify_write) (struct rw *rw, size_t index); /* Read base:allocation extents metadata for a region of the source. * For local files the same information is read from the kernel. * * Note that qemu-img fetches extents for the entire disk up front, * and we want to avoid doing that because it had very negative * behaviour for certain sources (ie. VDDK). */ void (*get_extents) (struct rw *rw, size_t index, uint64_t offset, uint64_t count, extent_list *ret); }; extern void default_get_extents (struct rw *rw, size_t index, uint64_t offset, uint64_t count, extent_list *ret); extern void get_polling_fd_not_supported (struct rw *rw, size_t index, int *fd_rtn, int *direction_rtn); extern void asynch_notify_read_write_not_supported (struct rw *rw, size_t index); extern bool allocated; extern unsigned connections; extern bool target_is_zero; extern bool extents; extern bool flush; extern unsigned max_requests; extern bool progress; extern int progress_fd; extern unsigned request_size; extern unsigned queue_size; extern unsigned sparse_size; extern bool synchronous; extern unsigned threads; extern bool verbose; extern const char *prog; extern void progress_bar (off_t pos, int64_t size); extern void synch_copying (void); extern void multi_thread_copying (void); #endif /* NBDCOPY_H */ libnbd-1.20.3/copy/file-ops.c0000644000175000017500000004554714616437241011373 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_SYS_IOCTL_H #include #endif #ifdef HAVE_LINUX_FS_H #include /* For BLKZEROOUT */ #endif #include "device-size.h" #include "isaligned.h" #include "ispowerof2.h" #include "rounding.h" #include "nbdcopy.h" /* Define PAGE_CACHE_MAPPING if we are going to attempt page cache * mapping. This feature tries not to disturb the page cache when * reading a file. Only do this on Linux systems where we understand * how the page cache behaves. Since we need to mmap the whole file, * also restrict this to 64 bit systems. */ #ifdef __linux__ #ifdef __SIZEOF_POINTER__ #if __SIZEOF_POINTER__ == 8 #define PAGE_CACHE_MAPPING 1 #endif #endif #endif /* Define EVICT_WRITES if we are going to evict the page cache after * writing a new file. */ #ifdef __linux__ #define EVICT_WRITES 1 #endif #ifdef PAGE_CACHE_MAPPING DEFINE_VECTOR_TYPE (byte_vector, uint8_t); #endif static struct rw_ops file_ops; struct rw_file { struct rw rw; int fd; bool is_block; bool seek_hole_supported; int sector_size; /* We try to use the most eficient zeroing first. If an efficent zero * method is not available, we disable the flag so next time we use * the working method. */ bool can_punch_hole, can_zero_range, can_fallocate, can_zeroout; #ifdef PAGE_CACHE_MAPPING byte_vector cached_pages; #endif }; #ifdef PAGE_CACHE_MAPPING static long page_size; static void page_size_init (void) __attribute__ ((constructor)); static void page_size_init (void) { page_size = sysconf (_SC_PAGE_SIZE); assert (page_size > 0); assert (is_power_of_2 (page_size)); } /* Load the page cache map for a particular file into * rwf->cached_pages. Only used when reading files. This doesn't * fail: if a system call fails then rwf->cached_pages.len will be * zero which is handled in page_cache_evict. */ static inline void page_cache_map (struct rw_file *rwf) { void *ptr; if (rwf->rw.size == 0) return; ptr = mmap (NULL, rwf->rw.size, PROT_READ, MAP_PRIVATE, rwf->fd, 0); if (ptr == (void *)-1) return; const size_t veclen = ROUND_UP (rwf->rw.size, page_size) / page_size; if (byte_vector_reserve_exactly (&rwf->cached_pages, veclen) == -1) goto out; if (mincore (ptr, rwf->rw.size, rwf->cached_pages.ptr) == -1) goto out; rwf->cached_pages.len = veclen; out: munmap (ptr, rwf->rw.size); } /* Test if a single page of the file was cached before nbdcopy ran. * Valid only if we mapped the cached pages. */ static inline bool page_was_cached (struct rw_file *rwf, uint64_t offset) { uint64_t page = offset / page_size; assert (page < rwf->cached_pages.len); return (rwf->cached_pages.ptr[page] & 1) != 0; } /* Evict file contents from the page cache if they were not present in * the page cache before. */ static inline void page_cache_evict (struct rw_file *rwf, uint64_t orig_offset, size_t orig_len) { uint64_t offset, n; size_t len; /* If we didn't manage to map the input file for any reason, assume * that pages were mapped so we will not evict them: essentially fall * back to doing nothing. */ if (rwf->cached_pages.len == 0) return; /* Only bother with whole pages. */ offset = ROUND_UP (orig_offset, page_size); if (orig_len < offset - orig_offset) return; len = orig_len - (offset - orig_offset); len = ROUND_DOWN (len, page_size); while (len > 0) { n = page_size; if (! page_was_cached (rwf, offset)) { /* Try to evict runs of pages in one go. */ while (len-n > 0 && ! page_was_cached (rwf, offset+n)) n += page_size; posix_fadvise (rwf->fd, offset, n, POSIX_FADV_DONTNEED); } offset += n; len -= n; } } #endif /* PAGE_CACHE_MAPPING */ #ifdef EVICT_WRITES /* Prepare to evict file contents from the page cache when writing. * We cannot do this directly (as for reads above) because we have to * wait for Linux to finish writing the pages to disk. Therefore the * strategy is to (1) tell Linux to begin writing asynchronously and * (2) evict the previous pages, which have hopefully been written * already by the time we get here. We have to maintain window(s) per * thread. * * For more information see https://stackoverflow.com/a/3756466 and * the links to Linus's advice from that entry. */ /* Increasing the number of windows gives better performance since * writes are given more time to make it to disk before we have to * pause to do the page cache eviction. But a larger number of * windows means less success overall since (a) more page cache is * used as the program runs, and (b) we don't evict any writes which * are still pending when the program exits. */ #define NR_WINDOWS 8 struct write_window { uint64_t offset; size_t len; }; static inline void evict_writes (struct rw_file *rwf, uint64_t offset, size_t len) { static __thread struct write_window window[NR_WINDOWS]; /* Evict the oldest window from the page cache. */ if (window[0].len > 0) { sync_file_range (rwf->fd, window[0].offset, window[0].len, SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE| SYNC_FILE_RANGE_WAIT_AFTER); posix_fadvise (rwf->fd, window[0].offset, window[0].len, POSIX_FADV_DONTNEED); } /* Move the Nth window to N-1. */ memmove (&window[0], &window[1], sizeof window[0] * (NR_WINDOWS-1)); /* Set up the current window and tell Linux to start writing it out * to disk (asynchronously). */ sync_file_range (rwf->fd, offset, len, SYNC_FILE_RANGE_WRITE); window[NR_WINDOWS-1].offset = offset; window[NR_WINDOWS-1].len = len; } #endif /* EVICT_WRITES */ static bool seek_hole_supported (int fd) { #ifndef SEEK_HOLE return false; #else off_t r = lseek (fd, 0, SEEK_HOLE); return r >= 0; #endif } struct rw * file_create (const char *name, int fd, const struct stat *statbuf, direction d) { struct rw_file *rwf; bool is_block; uint64_t preferred; is_block = S_ISBLK (statbuf->st_mode); assert (is_block || S_ISREG (statbuf->st_mode)); rwf = calloc (1, sizeof *rwf); if (rwf == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } rwf->rw.ops = &file_ops; rwf->rw.name = name; rwf->fd = fd; rwf->is_block = is_block; if (is_block) { unsigned int blkioopt; #ifdef BLKIOOPT if (ioctl (fd, BLKIOOPT, &blkioopt) == -1) { fprintf (stderr, "warning: cannot get optimal I/O size: %s: %m", name); blkioopt = 4096; } #else blkioopt = 4096; #endif preferred = blkioopt; } else { preferred = statbuf->st_blksize; } if (preferred > 0 && is_power_of_2 (preferred)) rwf->rw.preferred = preferred; else rwf->rw.preferred = 4096; if (is_block) { /* Block device - ignore size passed in. */ rwf->rw.size = device_size (fd, statbuf); if (rwf->rw.size == -1) { perror ("device_size"); exit (EXIT_FAILURE); } /* Since device_size may seek, reset the seek position. */ if (lseek (fd, 0, SEEK_SET) == -1) { perror ("lseek"); exit (EXIT_FAILURE); } rwf->seek_hole_supported = seek_hole_supported (fd); rwf->sector_size = 4096; #ifdef BLKSSZGET if (ioctl (fd, BLKSSZGET, &rwf->sector_size)) fprintf (stderr, "warning: cannot get sector size: %s: %m", name); #endif /* Possible efficient zero methods for block device. */ #ifdef FALLOC_FL_PUNCH_HOLE rwf->can_punch_hole = true; #endif #ifdef FALLOC_FL_ZERO_RANGE rwf->can_zero_range = true; #endif #ifdef BLKZEROOUT rwf->can_zeroout = true; #endif } else { /* Regular file. */ rwf->rw.size = statbuf->st_size; rwf->seek_hole_supported = seek_hole_supported (fd); /* Possible efficient zero methods for regular file. */ #ifdef FALLOC_FL_PUNCH_HOLE rwf->can_punch_hole = true; #endif #ifdef FALLOC_FL_ZERO_RANGE rwf->can_zero_range = true; #endif rwf->can_fallocate = true; } /* Set the POSIX_FADV_SEQUENTIAL flag on the file descriptor, but * don't fail. */ #if defined (HAVE_POSIX_FADVISE) && defined (POSIX_FADV_SEQUENTIAL) posix_fadvise (fd, 0, 0, POSIX_FADV_SEQUENTIAL); #endif #if PAGE_CACHE_MAPPING if (d == READING) page_cache_map (rwf); #endif return &rwf->rw; } static void file_close (struct rw *rw) { struct rw_file *rwf = (struct rw_file *)rw; if (close (rwf->fd) == -1) { fprintf (stderr, "%s: close: %m\n", rw->name); exit (EXIT_FAILURE); } #ifdef PAGE_CACHE_MAPPING byte_vector_reset (&rwf->cached_pages); #endif free (rw); } static void file_truncate (struct rw *rw, int64_t size) { struct rw_file *rwf = (struct rw_file *)rw; /* If the destination is an ordinary file then the original file * size doesn't matter. Truncate it to the source size. But * truncate it to zero first so the file is completely empty and * sparse. */ if (rwf->is_block) return; if (ftruncate (rwf->fd, 0) == -1 || ftruncate (rwf->fd, size) == -1) { fprintf (stderr, "%s: truncate: %m\n", rw->name); exit (EXIT_FAILURE); } rwf->rw.size = size; /* We can assume the target is zero. */ target_is_zero = true; } static void file_flush (struct rw *rw) { struct rw_file *rwf = (struct rw_file *)rw; if (fsync (rwf->fd) == -1) { perror (rw->name); exit (EXIT_FAILURE); } } static bool file_is_read_only (struct rw *rw) { /* Permissions are hard, and this is only used as an early check * before the copy. Proceed with the copy and fail if it fails. */ return false; } static bool file_can_extents (struct rw *rw) { #ifdef SEEK_HOLE return true; #else return false; #endif } static bool file_can_multi_conn (struct rw *rw) { return true; } static void file_start_multi_conn (struct rw *rw) { /* Don't need to do anything for files since we can read/write on a * single file descriptor. */ } static size_t file_synch_read (struct rw *rw, void *data, size_t len, uint64_t offset) { struct rw_file *rwf = (struct rw_file *)rw; #ifdef PAGE_CACHE_MAPPING const uint64_t orig_offset = offset; const size_t orig_len = len; #endif size_t n = 0; ssize_t r; while (len > 0) { r = pread (rwf->fd, data, len, offset); if (r == -1) { perror (rw->name); exit (EXIT_FAILURE); } if (r == 0) return n; data = (char *)data + r; offset += r; len -= r; n += r; } #if PAGE_CACHE_MAPPING page_cache_evict (rwf, orig_offset, orig_len); #endif return n; } static void file_synch_write (struct rw *rw, const void *data, size_t len, uint64_t offset) { struct rw_file *rwf = (struct rw_file *)rw; #ifdef EVICT_WRITES const uint64_t orig_offset = offset; const size_t orig_len = len; #endif ssize_t r; while (len > 0) { r = pwrite (rwf->fd, data, len, offset); if (r == -1) { perror (rw->name); exit (EXIT_FAILURE); } data = (char *)data + r; offset += r; len -= r; } #if EVICT_WRITES evict_writes (rwf, orig_offset, orig_len); #endif } static inline bool is_not_supported (int err) { return err == ENOTSUP || err == EOPNOTSUPP; } static bool file_punch_hole (int fd, uint64_t offset, uint64_t count) { #ifdef FALLOC_FL_PUNCH_HOLE int r; r = fallocate (fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, offset, count); if (r == -1) { if (is_not_supported (errno)) return false; perror ("fallocate: FALLOC_FL_PUNCH_HOLE"); exit (EXIT_FAILURE); } return true; #endif return false; } static bool file_zero_range (int fd, uint64_t offset, uint64_t count) { #ifdef FALLOC_FL_ZERO_RANGE int r; r = fallocate (fd, FALLOC_FL_ZERO_RANGE, offset, count); if (r == -1) { if (is_not_supported (errno)) return false; perror ("fallocate: FALLOC_FL_ZERO_RANGE"); exit (EXIT_FAILURE); } return true; #endif return false; } static bool file_zeroout (int fd, uint64_t offset, uint64_t count) { #ifdef BLKZEROOUT int r; uint64_t range[2] = {offset, count}; r = ioctl (fd, BLKZEROOUT, &range); if (r == -1) { if (errno == ENOTTY) return false; perror ("ioctl: BLKZEROOUT"); exit (EXIT_FAILURE); } return true; #endif return false; } static bool file_synch_zero (struct rw *rw, uint64_t offset, uint64_t count, bool allocate) { struct rw_file *rwf = (struct rw_file *)rw; /* The first call will try several options, discovering the * capabilities of the underlying storage, and disabling non working * options. The next calls will try only what works. * * If we don't need to allocate try to punch a hole. This works for * both files and block devices with modern kernels. */ if (!allocate && rwf->can_punch_hole) { if (file_punch_hole (rwf->fd, offset, count)) return true; rwf->can_punch_hole = false; } /* Try to zero the range. This works for both files and block devices * with modern kernels. */ if (rwf->can_zero_range) { if (file_zero_range (rwf->fd, offset, count)) return true; rwf->can_zero_range = false; } /* If we can punch a hole and fallocate, we can combine both * operations. This is expected to be more efficient than actually * writing zeroes. This works only for files. */ if (rwf->can_punch_hole && rwf->can_fallocate) { if (file_punch_hole (rwf->fd, offset, count)) { #ifdef __linux__ if (fallocate (rwf->fd, 0, offset, count)) return true; #endif rwf->can_fallocate = false; } else { rwf->can_punch_hole = false; } } /* Finally try BLKZEROOUT. This works only for block device if offset * and count are aligned to device sector size. */ else if (rwf->can_zeroout && IS_ALIGNED (offset | count, rwf->sector_size)) { if (file_zeroout (rwf->fd, offset, count)) return true; rwf->can_zeroout = false; } return false; } static void file_asynch_read (struct rw *rw, struct command *command, nbd_completion_callback cb) { int dummy = 0; file_synch_read (rw, slice_ptr (command->slice), command->slice.len, command->offset); /* file_synch_read called exit() on error */ cb.callback (cb.user_data, &dummy); } static void file_asynch_write (struct rw *rw, struct command *command, nbd_completion_callback cb) { int dummy = 0; file_synch_write (rw, slice_ptr (command->slice), command->slice.len, command->offset); /* file_synch_write called exit() on error */ cb.callback (cb.user_data, &dummy); } static bool file_asynch_zero (struct rw *rw, struct command *command, nbd_completion_callback cb, bool allocate) { int dummy = 0; if (!file_synch_zero (rw, command->offset, command->slice.len, allocate)) return false; cb.callback (cb.user_data, &dummy); return true; } static unsigned file_in_flight (struct rw *rw, size_t index) { return 0; } static void file_get_extents (struct rw *rw, size_t index, uint64_t offset, uint64_t count, extent_list *ret) { ret->len = 0; #ifdef SEEK_HOLE struct rw_file *rwf = (struct rw_file *)rw; static pthread_mutex_t lseek_lock = PTHREAD_MUTEX_INITIALIZER; if (rwf->seek_hole_supported) { uint64_t end = offset + count; int fd = rwf->fd; off_t pos; struct extent e; size_t last; pthread_mutex_lock (&lseek_lock); /* This loop is taken pretty much verbatim from nbdkit-file-plugin. */ do { pos = lseek (fd, offset, SEEK_DATA); if (pos == -1) { if (errno == ENXIO) pos = end; else { perror ("lseek: SEEK_DATA"); pthread_mutex_unlock (&lseek_lock); exit (EXIT_FAILURE); } } /* We know there is a hole from offset to pos-1. */ if (pos > offset) { e.offset = offset; e.length = pos - offset; e.zero = true; if (extent_list_append (ret, e) == -1) { perror ("realloc"); pthread_mutex_unlock (&lseek_lock); exit (EXIT_FAILURE); } } offset = pos; if (offset >= end) break; pos = lseek (fd, offset, SEEK_HOLE); if (pos == -1) { perror ("lseek: SEEK_HOLE"); pthread_mutex_unlock (&lseek_lock); exit (EXIT_FAILURE); } /* We know there is allocated data from offset to pos-1. */ if (pos > offset) { e.offset = offset; e.length = pos - offset; e.zero = false; if (extent_list_append (ret, e) == -1) { perror ("realloc"); pthread_mutex_unlock (&lseek_lock); exit (EXIT_FAILURE); } } offset = pos; } while (offset < end); /* The last extent may extend beyond the request bounds. We must * truncate it. */ assert (ret->len > 0); last = ret->len - 1; assert (ret->ptr[last].offset <= end); if (ret->ptr[last].offset + ret->ptr[last].length > end) { uint64_t d = ret->ptr[last].offset + ret->ptr[last].length - end; ret->ptr[last].length -= d; assert (ret->ptr[last].offset + ret->ptr[last].length == end); } pthread_mutex_unlock (&lseek_lock); return; } #endif /* Otherwise return the default extent covering the whole range. */ default_get_extents (rw, index, offset, count, ret); } static struct rw_ops file_ops = { .ops_name = "file_ops", .close = file_close, .is_read_only = file_is_read_only, .can_extents = file_can_extents, .can_multi_conn = file_can_multi_conn, .start_multi_conn = file_start_multi_conn, .truncate = file_truncate, .flush = file_flush, .synch_read = file_synch_read, .synch_write = file_synch_write, .synch_zero = file_synch_zero, .asynch_read = file_asynch_read, .asynch_write = file_asynch_write, .asynch_zero = file_asynch_zero, .in_flight = file_in_flight, .get_polling_fd = get_polling_fd_not_supported, .asynch_notify_read = asynch_notify_read_write_not_supported, .asynch_notify_write = asynch_notify_read_write_not_supported, .get_extents = file_get_extents, }; libnbd-1.20.3/copy/main.c0000644000175000017500000004461014616437241010567 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_SYS_IOCTL_H #include #endif #include #include #include "ispowerof2.h" #include "human-size.h" #include "minmax.h" #include "version.h" #include "nbdcopy.h" bool allocated; /* --allocated flag */ unsigned connections = 4; /* --connections */ bool target_is_zero; /* --target-is-zero flag */ bool extents = true; /* ! --no-extents flag */ bool flush; /* --flush flag */ unsigned max_requests = 64; /* --requests */ bool progress; /* -p flag */ int progress_fd = -1; /* --progress=FD */ unsigned queue_size = 16<<20; /* --queue-size */ unsigned request_size = 1<<18; /* --request-size */ unsigned sparse_size = 4096; /* --sparse */ bool synchronous; /* --synchronous flag */ unsigned threads; /* --threads */ struct rw *src, *dst; /* The source and destination. */ bool verbose; /* --verbose flag */ const char *prog; /* program name (== basename argv[0]) */ static bool is_nbd_uri (const char *s); static struct rw *open_local (const char *filename, direction d); static void print_rw (struct rw *rw, const char *prefix, FILE *fp); static void __attribute__ ((noreturn)) usage (FILE *fp, int exitcode) { fprintf (fp, "\n" "Copy to and from an NBD server:\n" "\n" " nbdcopy [--allocated] [-C N|--connections=N]\n" " [--destination-is-zero|--target-is-zero] [--flush]\n" " [--no-extents] [-p|--progress|--progress=FD]\n" " [--queue-size=N] [--request-size=N] [-R N|--requests=N]\n" " [-S N|--sparse=N] [--synchronous] [-T N|--threads=N] \n" " [-v|--verbose]\n" " SOURCE DESTINATION\n" "\n" " SOURCE, DESTINATION := - | FILE | DEVICE | NBD-URI | [ CMD ARGS ... ]\n" " DESTINATION += null:\n" "\n" "Other options:\n" "\n" " nbdcopy --help\n" " nbdcopy -V|--version\n" "\n" "Examples:\n" "\n" " nbdcopy nbd://example.com local.img\n" " nbdcopy local.img nbd://example.com\n" " nbdcopy nbd://example.com - | file -\n" " cat disk1 disk2 | nbdcopy -- - [ qemu-nbd -f qcow2 output.qcow2 ]\n" "\n" "Please read the nbdcopy(1) manual page for full usage.\n" "\n" ); exit (exitcode); } int main (int argc, char *argv[]) { enum { HELP_OPTION = CHAR_MAX + 1, LONG_OPTIONS, SHORT_OPTIONS, ALLOCATED_OPTION, TARGET_IS_ZERO_OPTION, FLUSH_OPTION, NO_EXTENTS_OPTION, QUEUE_SIZE_OPTION, REQUEST_SIZE_OPTION, SYNCHRONOUS_OPTION, }; const char *short_options = "C:pR:S:T:vV"; const struct option long_options[] = { { "help", no_argument, NULL, HELP_OPTION }, { "long-options", no_argument, NULL, LONG_OPTIONS }, { "allocated", no_argument, NULL, ALLOCATED_OPTION }, { "connections", required_argument, NULL, 'C' }, { "destination-is-zero", no_argument, NULL, TARGET_IS_ZERO_OPTION }, { "flush", no_argument, NULL, FLUSH_OPTION }, { "no-extents", no_argument, NULL, NO_EXTENTS_OPTION }, { "progress", optional_argument, NULL, 'p' }, { "queue-size", required_argument, NULL, QUEUE_SIZE_OPTION }, { "request-size", required_argument, NULL, REQUEST_SIZE_OPTION }, { "requests", required_argument, NULL, 'R' }, { "short-options", no_argument, NULL, SHORT_OPTIONS }, { "sparse", required_argument, NULL, 'S' }, { "synchronous", no_argument, NULL, SYNCHRONOUS_OPTION }, { "target-is-zero", no_argument, NULL, TARGET_IS_ZERO_OPTION }, { "threads", required_argument, NULL, 'T' }, { "verbose", no_argument, NULL, 'v' }, { "version", no_argument, NULL, 'V' }, { NULL } }; int c; size_t i; int64_t i64; const char *error, *pstr; /* Set prog to basename argv[0]. */ prog = strrchr (argv[0], '/'); if (prog == NULL) prog = argv[0]; else prog++; for (;;) { c = getopt_long (argc, argv, short_options, long_options, NULL); if (c == -1) break; switch (c) { case HELP_OPTION: usage (stdout, EXIT_SUCCESS); case LONG_OPTIONS: for (i = 0; long_options[i].name != NULL; ++i) { if (strcmp (long_options[i].name, "long-options") != 0 && strcmp (long_options[i].name, "short-options") != 0) printf ("--%s\n", long_options[i].name); } exit (EXIT_SUCCESS); case SHORT_OPTIONS: for (i = 0; short_options[i]; ++i) { if (short_options[i] != ':' && short_options[i] != '+') printf ("-%c\n", short_options[i]); } exit (EXIT_SUCCESS); case ALLOCATED_OPTION: allocated = true; break; case TARGET_IS_ZERO_OPTION: target_is_zero = true; break; case FLUSH_OPTION: flush = true; break; case NO_EXTENTS_OPTION: extents = false; break; case SYNCHRONOUS_OPTION: synchronous = true; break; case 'C': if (sscanf (optarg, "%u", &connections) != 1 || connections == 0) { fprintf (stderr, "%s: --connections: could not parse: %s\n", prog, optarg); exit (EXIT_FAILURE); } break; case 'p': progress = true; if (optarg) { if (sscanf (optarg, "%d", &progress_fd) != 1 || progress_fd < 0) { fprintf (stderr, "%s: --progress: could not parse: %s\n", prog, optarg); exit (EXIT_FAILURE); } } break; case QUEUE_SIZE_OPTION: i64 = human_size_parse (optarg, &error, &pstr); if (i64 == -1) { fprintf (stderr, "%s: --queue-size: %s: %s\n", prog, error, pstr); exit (EXIT_FAILURE); } if (i64 > UINT_MAX) { fprintf (stderr, "%s: --queue-size is too large: %s\n", prog, optarg); exit (EXIT_FAILURE); } queue_size = i64; break; case REQUEST_SIZE_OPTION: i64 = human_size_parse (optarg, &error, &pstr); if (i64 == -1) { fprintf (stderr, "%s: --request-size: %s: %s\n", prog, error, pstr); exit (EXIT_FAILURE); } if (i64 < MIN_REQUEST_SIZE || i64 > MAX_REQUEST_SIZE || !is_power_of_2 (i64)) { fprintf (stderr, "%s: --request-size: must be a power of 2 within %d-%d: %s\n", prog, MIN_REQUEST_SIZE, MAX_REQUEST_SIZE, optarg); exit (EXIT_FAILURE); } STATIC_ASSERT (MAX_REQUEST_SIZE <= UINT_MAX, max_request_size_too_large); request_size = i64; break; case 'R': if (sscanf (optarg, "%u", &max_requests) != 1 || max_requests == 0) { fprintf (stderr, "%s: --requests: could not parse: %s\n", prog, optarg); exit (EXIT_FAILURE); } break; case 'S': i64 = human_size_parse (optarg, &error, &pstr); if (i64 == -1) { fprintf (stderr, "%s: --sparse: %s: %s\n", prog, error, pstr); exit (EXIT_FAILURE); } if (i64 != 0 && (i64 < 512 || i64 > UINT_MAX || !is_power_of_2 (i64))) { fprintf (stderr, "%s: --sparse: must be a power of 2, " "between %u-%u: %s\n", prog, 512, UINT_MAX, optarg); exit (EXIT_FAILURE); } sparse_size = i64; break; case 'T': if (sscanf (optarg, "%u", &threads) != 1) { fprintf (stderr, "%s: --threads: could not parse: %s\n", prog, optarg); exit (EXIT_FAILURE); } break; case 'v': verbose = true; break; case 'V': display_version ("nbdcopy"); exit (EXIT_SUCCESS); default: usage (stderr, EXIT_FAILURE); } } /* The remaining parameters describe the SOURCE and DESTINATION and * may either be -, filenames, NBD URIs, null: or [ ... ] sequences. */ if (optind > argc - 2) usage (stderr, EXIT_FAILURE); if (strcmp (argv[optind], "[") == 0) { /* Source is [...] */ for (i = optind+1; i < argc; ++i) if (strcmp (argv[i], "]") == 0) goto found1; usage (stderr, EXIT_FAILURE); found1: connections = 1; /* multi-conn not supported */ src = nbd_rw_create_subprocess ((const char **)&argv[optind+1], i-optind-1, false); optind = i+1; } else { /* Source is not [...]. */ const char *src_name = argv[optind++]; if (! is_nbd_uri (src_name)) src = open_local (src_name, READING); else src = nbd_rw_create_uri (src_name, src_name, READING); } if (optind >= argc) usage (stderr, EXIT_FAILURE); if (strcmp (argv[optind], "[") == 0) { /* Destination is [...] */ for (i = optind+1; i < argc; ++i) if (strcmp (argv[i], "]") == 0) goto found2; usage (stderr, EXIT_FAILURE); found2: connections = 1; /* multi-conn not supported */ dst = nbd_rw_create_subprocess ((const char **)&argv[optind+1], i-optind-1, true); optind = i+1; } else { /* Destination is not [...] */ const char *dst_name = argv[optind++]; if (strcmp (dst_name, "null:") == 0) dst = null_create (dst_name); else if (! is_nbd_uri (dst_name)) dst = open_local (dst_name, WRITING); else dst = nbd_rw_create_uri (dst_name, dst_name, WRITING); } /* There must be no extra parameters. */ if (optind != argc) usage (stderr, EXIT_FAILURE); /* Check we've created src and dst and set the expected fields. */ assert (src != NULL); assert (dst != NULL); assert (src->ops != NULL); assert (src->name != NULL); assert (dst->ops != NULL); assert (dst->name != NULL); assert (src->preferred > 0 && is_power_of_2 (src->preferred)); assert (dst->preferred > 0 && is_power_of_2 (dst->preferred)); /* Obviously this is not going to work if the destination is * read-only, so fail early with a nice error message. */ if (dst->ops->is_read_only (dst)) { fprintf (stderr, "%s: %s: " "the destination is read-only, cannot write to it\n", prog, dst->name); exit (EXIT_FAILURE); } /* If multi-conn is not supported, force connections to 1. */ if (! src->ops->can_multi_conn (src) || ! dst->ops->can_multi_conn (dst)) connections = 1; /* Calculate the number of threads from the number of connections. */ if (threads == 0) { long t; #ifdef _SC_NPROCESSORS_ONLN t = sysconf (_SC_NPROCESSORS_ONLN); if (t <= 0) { perror ("could not get number of cores online"); t = 1; } #else t = 1; #endif assert (t <= UINT_MAX); threads = t; } if (synchronous) connections = 1; if (connections < threads) threads = connections; if (threads < connections) connections = threads; /* request_size must always be at least as large as the preferred * size of source & destination. */ request_size = MAX (request_size, src->preferred); request_size = MAX (request_size, dst->preferred); assert (request_size > 0); assert (request_size <= MAX_REQUEST_SIZE); assert (request_size <= THREAD_WORK_SIZE); assert (is_power_of_2 (request_size)); /* Adapt queue to size to request size if needed. */ if (request_size > queue_size) queue_size = request_size; /* Sparse size (if using) must not be smaller than the destination * preferred size, otherwise we end up creating too small requests. */ if (sparse_size > 0 && sparse_size < dst->preferred) sparse_size = dst->preferred; assert (sparse_size == 0 || is_power_of_2 (sparse_size)); /* Truncate the destination to the same size as the source. Only * has an effect on regular files. */ if (dst->ops->truncate) dst->ops->truncate (dst, src->size); /* Check if the source is bigger than the destination, since that * would truncate (ie. lose) data. Copying from smaller to larger * is OK. */ if (src->size >= 0 && dst->size >= 0 && src->size > dst->size) { fprintf (stderr, "%s: error: destination size (%" PRIi64 ") is smaller than source size (%" PRIi64 ")\n", prog, dst->size, src->size); exit (EXIT_FAILURE); } /* Since we have constructed the final src and dst structures here, * print them out in verbose mode, and also various useful internal * settings. */ if (verbose) { print_rw (src, "nbdcopy: src", stderr); print_rw (dst, "nbdcopy: dst", stderr); fprintf (stderr, "nbdcopy: connections=%u requests=%u threads=%u " "synchronous=%s\n", connections, max_requests, threads, synchronous ? "true" : "false"); } /* If multi-conn is enabled on either side, then at this point we * need to ask the backend to open the extra connections. */ if (connections > 1) { assert (threads == connections); if (src->ops->can_multi_conn (src)) src->ops->start_multi_conn (src); if (dst->ops->can_multi_conn (dst)) dst->ops->start_multi_conn (dst); } /* If the source is NBD and we couldn't negotiate meta * base:allocation then turn off extents. */ if (! src->ops->can_extents (src)) extents = false; /* Always set the progress bar to 0% at the start of the copy. */ progress_bar (0, 1); /* Start copying. */ if (synchronous) synch_copying (); else multi_thread_copying (); /* Always set the progress bar to 100% at the end of the copy. */ progress_bar (1, 1); /* Shut down the source side. */ src->ops->close (src); /* Shut down the destination side. */ if (flush) dst->ops->flush (dst); dst->ops->close (dst); exit (EXIT_SUCCESS); } /* Return true if the parameter is an NBD URI. */ static bool is_nbd_uri (const char *s) { return strncmp (s, "nbd:", 4) == 0 || strncmp (s, "nbds:", 5) == 0 || strncmp (s, "nbd+unix:", 9) == 0 || strncmp (s, "nbds+unix:", 10) == 0 || strncmp (s, "nbd+vsock:", 10) == 0 || strncmp (s, "nbds+vsock:", 11) == 0; } /* Open a local (non-NBD) file, ie. a file, device, or "-" for stdio. * Returns the struct rw * which the caller must close. * * “writing” is true if this is the destination parameter. * “rw->u.local.stat” and “rw->size” return the file stat and size, * but size can be returned as -1 if we don't know the size (if it's a * pipe or stdio). */ static struct rw * open_local (const char *filename, direction d) { int flags, fd; struct stat stat; if (strcmp (filename, "-") == 0) { synchronous = true; fd = d == WRITING ? STDOUT_FILENO : STDIN_FILENO; if (d == WRITING && isatty (fd)) { fprintf (stderr, "%s: refusing to write to tty\n", prog); exit (EXIT_FAILURE); } } else { /* If it's a block device and we're writing we don't want to turn * it into a truncated regular file by accident, so try to open * without O_CREAT first. * * A note about O_RDWR (instead of O_WRONLY): We may later call * device_size on this device. It might need to do seeking and * reading to determine the device size (although not on Linux). * Therefore we do in fact need read permission, even though * nbdcopy itself will only write to the block device. */ flags = d == WRITING ? O_RDWR : O_RDONLY; fd = open (filename, flags); if (fd == -1) { if (d == WRITING) { /* Try again, with more flags. */ flags |= O_TRUNC|O_CREAT|O_EXCL; fd = open (filename, flags, 0644); } if (fd == -1) { fprintf (stderr, "%s: %s: %m\n", prog, filename); exit (EXIT_FAILURE); } } } if (fstat (fd, &stat) == -1) { fprintf (stderr, "%s: %s: %m\n", prog, filename); exit (EXIT_FAILURE); } /* Regular file or block device. */ if (S_ISREG (stat.st_mode) || S_ISBLK (stat.st_mode)) return file_create (filename, fd, &stat, d); /* Probably stdin/stdout, a pipe or a socket. */ else { synchronous = true; /* Force synchronous mode for pipes. */ return pipe_create (filename, fd); } } /* Print an rw struct, used in --verbose mode. */ static void print_rw (struct rw *rw, const char *prefix, FILE *fp) { char buf[HUMAN_SIZE_LONGEST]; fprintf (fp, "%s: %s \"%s\"\n", prefix, rw->ops->ops_name, rw->name); fprintf (fp, "%s: size=%" PRIi64 " (%s), preferred block size=%" PRIu64 "\n", prefix, rw->size, human_size (buf, rw->size, NULL), rw->preferred); } /* Default implementation of rw->ops->get_extents for backends which * don't/can't support extents. Also used for the --no-extents case. */ void default_get_extents (struct rw *rw, size_t index, uint64_t offset, uint64_t count, extent_list *ret) { struct extent e; ret->len = 0; e.offset = offset; e.length = count; e.zero = false; if (extent_list_append (ret, e) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } } /* Implementations of get_polling_fd and asynch_notify_* for backends * which don't support polling. */ void get_polling_fd_not_supported (struct rw *rw, size_t index, int *fd_rtn, int *direction_rtn) { /* Not an error, this causes poll to ignore the fd. */ *fd_rtn = -1; *direction_rtn = LIBNBD_AIO_DIRECTION_READ; } void asynch_notify_read_write_not_supported (struct rw *rw, size_t index) { /* nothing */ } libnbd-1.20.3/copy/multi-thread-copying.c0000644000175000017500000004761214525371754013722 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "iszero.h" #include "minmax.h" #include "rounding.h" #include "nbdcopy.h" /* Threads pick up work in units of THREAD_WORK_SIZE starting at the * next_offset. The lock protects next_offset. */ static uint64_t next_offset = 0; static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; static bool get_next_offset (uint64_t *offset, uint64_t *count) { bool r = false; /* returning false means no more work */ pthread_mutex_lock (&lock); if (next_offset < src->size) { *offset = next_offset; /* Work out how large this range is. The last range may be * smaller than THREAD_WORK_SIZE. */ *count = src->size - *offset; if (*count > THREAD_WORK_SIZE) *count = THREAD_WORK_SIZE; next_offset += THREAD_WORK_SIZE; r = true; /* there is more work */ /* XXX This means the progress bar "runs fast" since it shows the * progress issuing commands, not necessarily progress performing * the commands. We might move this into a callback, but those * are called from threads and not necessarily in monotonic order * so the progress bar would move erratically. */ progress_bar (*offset, src->size); } pthread_mutex_unlock (&lock); return r; } static void *worker_thread (void *wp); void multi_thread_copying (void) { struct worker *workers; size_t i; int err; /* Some invariants that should be true if the main program called us * correctly. */ assert (threads > 0); assert (threads == connections); /* if (src.ops == &nbd_ops) assert (src.u.nbd.handles.size == connections); if (dst.ops == &nbd_ops) assert (dst.u.nbd.handles.size == connections); */ assert (src->size != -1); workers = calloc (threads, sizeof *workers); if (workers == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } /* Start the worker threads. */ for (i = 0; i < threads; ++i) { workers[i].index = i; err = pthread_create (&workers[i].thread, NULL, worker_thread, &workers[i]); if (err != 0) { errno = err; perror ("pthread_create"); exit (EXIT_FAILURE); } } /* Wait until all worker threads exit. */ for (i = 0; i < threads; ++i) { err = pthread_join (workers[i].thread, NULL); if (err != 0) { errno = err; perror ("pthread_join"); exit (EXIT_FAILURE); } } free (workers); } static void wait_for_request_slots (struct worker *worker); static unsigned in_flight (size_t index); static void poll_both_ends (size_t index); static int finished_read (void *vp, int *error); static int finished_command (void *vp, int *error); static void free_command (struct command *command); static void fill_dst_range_with_zeroes (struct command *command); static struct command *create_command (uint64_t offset, size_t len, bool zero, struct worker *worker); /* Tracking worker queue size. * * The queue size is increased when starting a read command. * * The queue size is decreased when a read command is converted to zero * subcommand in finished_read(), or when a write command completes in * finished_command(). * * Zero commands are not considered in the queue size since they have no * payload. */ static inline void increase_queue_size (struct worker *worker, size_t len) { assert (worker->queue_size < queue_size); worker->queue_size += len; } static inline void decrease_queue_size (struct worker *worker, size_t len) { assert (worker->queue_size >= len); worker->queue_size -= len; } /* Using the extents map 'exts', check if the region * [offset..offset+len-1] intersects only with zero extents. * * The invariant for '*i' is always an extent which starts before or * equal to the current offset. */ static bool only_zeroes (const extent_list exts, size_t *i, uint64_t offset, unsigned len) { size_t j; /* Invariant. */ assert (*i < exts.len); assert (exts.ptr[*i].offset <= offset); /* Update the invariant. Search for the last possible extent in the * list which is <= offset. */ for (j = *i + 1; j < exts.len; ++j) { if (exts.ptr[j].offset <= offset) *i = j; else break; } /* Check invariant again. */ assert (*i < exts.len); assert (exts.ptr[*i].offset <= offset); /* If *i is not the last extent, then the next extent starts * strictly beyond our current offset. */ assert (*i == exts.len - 1 || exts.ptr[*i + 1].offset > offset); /* Search forward, look for any non-zero extents overlapping the region. */ for (j = *i; j < exts.len; ++j) { uint64_t start, end; /* [start..end-1] is the current extent. */ start = exts.ptr[j].offset; end = exts.ptr[j].offset + exts.ptr[j].length; assert (end > offset); if (start >= offset + len) break; /* Non-zero extent covering this region => test failed. */ if (!exts.ptr[j].zero) return false; } return true; } /* There are 'threads' worker threads, each copying work ranges from * src to dst until there are no more work ranges. */ static void * worker_thread (void *wp) { struct worker *w = wp; uint64_t offset, count; extent_list exts = empty_vector; while (get_next_offset (&offset, &count)) { struct command *command; size_t extent_index; bool is_zeroing = false; uint64_t zeroing_start = 0; /* initialized to avoid bogus GCC warning */ assert (0 < count && count <= THREAD_WORK_SIZE); if (extents) src->ops->get_extents (src, w->index, offset, count, &exts); else default_get_extents (src, w->index, offset, count, &exts); extent_index = 0; // index into extents array used to optimize only_zeroes while (count) { const size_t len = MIN (count, request_size); if (only_zeroes (exts, &extent_index, offset, len)) { /* The source is zero so we can proceed directly to skipping, * fast zeroing, or writing zeroes at the destination. Defer * zeroing so we can send it as a single large command. */ if (!is_zeroing) { is_zeroing = true; zeroing_start = offset; } } else /* data */ { /* If we were in the middle of deferred zeroing, do it now. */ if (is_zeroing) { /* Note that offset-zeroing_start can never exceed * THREAD_WORK_SIZE, so there is no danger of overflowing * size_t. */ command = create_command (zeroing_start, offset-zeroing_start, true, w); fill_dst_range_with_zeroes (command); is_zeroing = false; } /* Issue the asynchronous read command. */ command = create_command (offset, len, false, w); wait_for_request_slots (w); /* NOTE: Must increase the queue size after waiting. */ increase_queue_size (w, len); /* Begin the asynch read operation. */ src->ops->asynch_read (src, command, (nbd_completion_callback) { .callback = finished_read, .user_data = command, }); } offset += len; count -= len; } /* while (count) */ /* If we were in the middle of deferred zeroing, do it now. */ if (is_zeroing) { /* Note that offset-zeroing_start can never exceed * THREAD_WORK_SIZE, so there is no danger of overflowing * size_t. */ command = create_command (zeroing_start, offset - zeroing_start, true, w); fill_dst_range_with_zeroes (command); //is_zeroing = false; } } /* Wait for in flight NBD requests to finish. */ while (in_flight (w->index) > 0) poll_both_ends (w->index); free (exts.ptr); return NULL; } /* If the number of requests or queued bytes in flight exceed limits, * then poll until enough requests finish. This enforces the user * --requests and --queue-size options. * * NB: Unfortunately it's not possible to call this from a callback, * since it will deadlock trying to grab the libnbd handle lock. This * means that although the worker thread calls this and enforces the * limit, when we split up requests into subrequests (eg. doing * sparseness detection) we will probably exceed the user request * limit. XXX */ static void wait_for_request_slots (struct worker *worker) { while (in_flight (worker->index) >= max_requests || worker->queue_size >= queue_size) poll_both_ends (worker->index); } /* Count the number of asynchronous commands in flight. */ static unsigned in_flight (size_t index) { return src->ops->in_flight (src, index) + dst->ops->in_flight (dst, index); } /* Poll (optional) NBD src and NBD dst, moving the state machine(s) * along. This is a lightly modified nbd_poll. */ static void poll_both_ends (size_t index) { struct pollfd fds[2]; int r, direction; memset (fds, 0, sizeof fds); /* Note: if polling is not supported, this function will * set fd == -1 which poll ignores. */ src->ops->get_polling_fd (src, index, &fds[0].fd, &direction); if (fds[0].fd >= 0) { switch (direction) { case LIBNBD_AIO_DIRECTION_READ: fds[0].events = POLLIN; break; case LIBNBD_AIO_DIRECTION_WRITE: fds[0].events = POLLOUT; break; case LIBNBD_AIO_DIRECTION_BOTH: fds[0].events = POLLIN|POLLOUT; break; } } dst->ops->get_polling_fd (dst, index, &fds[1].fd, &direction); if (fds[1].fd >= 0) { switch (direction) { case LIBNBD_AIO_DIRECTION_READ: fds[1].events = POLLIN; break; case LIBNBD_AIO_DIRECTION_WRITE: fds[1].events = POLLOUT; break; case LIBNBD_AIO_DIRECTION_BOTH: fds[1].events = POLLIN|POLLOUT; break; } } r = poll (fds, 2, -1); if (r == -1) { perror ("poll"); exit (EXIT_FAILURE); } if (r == 0) return; if (fds[0].fd >= 0) { if ((fds[0].revents & (POLLIN | POLLHUP)) != 0) src->ops->asynch_notify_read (src, index); else if ((fds[0].revents & POLLOUT) != 0) src->ops->asynch_notify_write (src, index); else if ((fds[0].revents & (POLLERR | POLLNVAL)) != 0) { errno = ENOTCONN; perror (src->name); exit (EXIT_FAILURE); } } if (fds[1].fd >= 0) { if ((fds[1].revents & (POLLIN | POLLHUP)) != 0) dst->ops->asynch_notify_read (dst, index); else if ((fds[1].revents & POLLOUT) != 0) dst->ops->asynch_notify_write (dst, index); else if ((fds[1].revents & (POLLERR | POLLNVAL)) != 0) { errno = ENOTCONN; perror (dst->name); exit (EXIT_FAILURE); } } } /* Create a new buffer. */ static struct buffer* create_buffer (size_t len) { struct buffer *buffer; buffer = calloc (1, sizeof *buffer); if (buffer == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } buffer->data = malloc (len); if (buffer->data == NULL) { perror ("malloc"); exit (EXIT_FAILURE); } buffer->refs = 1; return buffer; } /* Create a new command for read or zero. */ static struct command * create_command (uint64_t offset, size_t len, bool zero, struct worker *worker) { struct command *command; command = calloc (1, sizeof *command); if (command == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } command->offset = offset; command->slice.len = len; if (!zero) command->slice.buffer = create_buffer (len); command->worker = worker; return command; } /* Create a sub-command of an existing command. This creates a slice * referencing the buffer of the existing command without copying. */ static struct command * create_subcommand (struct command *command, uint64_t offset, size_t len, bool zero) { const uint64_t end = command->offset + command->slice.len; struct command *newcommand; assert (command->offset <= offset && offset < end); assert (offset + len <= end); newcommand = calloc (1, sizeof *newcommand); if (newcommand == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } newcommand->offset = offset; newcommand->slice.len = len; if (!zero) { newcommand->slice.buffer = command->slice.buffer; newcommand->slice.buffer->refs++; newcommand->slice.base = offset - command->offset; } newcommand->worker = command->worker; return newcommand; } /* Callback called when src has finished one read command. This * initiates a write. */ static int finished_read (void *vp, int *error) { struct command *command = vp; if (*error) { fprintf (stderr, "%s: read at offset %" PRId64 " failed: %s\n", prog, command->offset, strerror (*error)); exit (EXIT_FAILURE); } if (allocated || sparse_size == 0) { /* If sparseness detection (see below) is turned off then we write * the whole command. */ dst->ops->asynch_write (dst, command, (nbd_completion_callback) { .callback = finished_command, .user_data = command, }); } else { /* Sparseness detection. */ const uint64_t start = command->offset; const uint64_t end = start + command->slice.len; uint64_t last_offset = start; bool last_is_zero = false; uint64_t i; struct command *newcommand; /* Iterate over whole blocks in the command, starting on a block * boundary. */ for (i = MIN (ROUND_UP (start, sparse_size), end); i + sparse_size <= end; i += sparse_size) { if (is_zero (slice_ptr (command->slice) + i-start, sparse_size)) { /* It's a zero range. If the last was a zero too then we do * nothing here which coalesces. Otherwise write the last data * and start a new zero range. */ if (!last_is_zero) { /* Write the last data (if any). */ if (i - last_offset > 0) { newcommand = create_subcommand (command, last_offset, i - last_offset, false); dst->ops->asynch_write (dst, newcommand, (nbd_completion_callback) { .callback = finished_command, .user_data = newcommand, }); } /* Start the new zero range. */ last_offset = i; last_is_zero = true; } } else { /* It's data. If the last was data too, do nothing => * coalesce. Otherwise write the last zero range and start a * new data. */ if (last_is_zero) { /* Write the last zero range (if any). */ if (i - last_offset > 0) { newcommand = create_subcommand (command, last_offset, i - last_offset, true); decrease_queue_size (command->worker, newcommand->slice.len); fill_dst_range_with_zeroes (newcommand); } /* Start the new data. */ last_offset = i; last_is_zero = false; } } } /* for i */ /* Write the last_offset up to i. */ if (i - last_offset > 0) { if (!last_is_zero) { newcommand = create_subcommand (command, last_offset, i - last_offset, false); dst->ops->asynch_write (dst, newcommand, (nbd_completion_callback) { .callback = finished_command, .user_data = newcommand, }); } else { newcommand = create_subcommand (command, last_offset, i - last_offset, true); decrease_queue_size (command->worker, newcommand->slice.len); fill_dst_range_with_zeroes (newcommand); } } /* There may be an unaligned tail, so write that. */ if (end - i > 0) { newcommand = create_subcommand (command, i, end - i, false); dst->ops->asynch_write (dst, newcommand, (nbd_completion_callback) { .callback = finished_command, .user_data = newcommand, }); } /* Free the original command since it has been split into * subcommands and the original is no longer needed. */ free_command (command); } return 1; /* auto-retires the command */ } /* Fill a range in dst with zeroes. This is called from the copying * loop when we see a zero range in the source. Depending on the * command line flags this could mean: * * --destination-is-zero: * do nothing * * --allocated: write zeroes allocating space using an efficient * zeroing command or writing a command of zeroes * * (neither flag) write zeroes punching a hole using an efficient * zeroing command or fallback to writing a command * of zeroes. * * This takes over ownership of the command and frees it eventually. */ static void fill_dst_range_with_zeroes (struct command *command) { char *data; size_t data_size; if (target_is_zero) goto free_and_return; /* Try efficient zeroing. */ if (dst->ops->asynch_zero (dst, command, (nbd_completion_callback) { .callback = finished_command, .user_data = command, }, allocated)) return; /* Fall back to loop writing zeroes. This is going to be slow * anyway, so do it synchronously. XXX */ data_size = MIN (request_size, command->slice.len); data = calloc (1, data_size); if (!data) { perror ("calloc"); exit (EXIT_FAILURE); } while (command->slice.len > 0) { size_t len = command->slice.len; if (len > data_size) len = data_size; dst->ops->synch_write (dst, data, len, command->offset); command->slice.len -= len; command->offset += len; } free (data); free_and_return: free_command (command); } static int finished_command (void *vp, int *error) { struct command *command = vp; if (*error) { fprintf (stderr, "%s: write at offset %" PRId64 " failed: %s\n", prog, command->offset, strerror (*error)); exit (EXIT_FAILURE); } if (command->slice.buffer) decrease_queue_size (command->worker, command->slice.len); free_command (command); return 1; /* auto-retires the command */ } static void free_command (struct command *command) { if (command == NULL) return; struct buffer *buffer = command->slice.buffer; if (buffer != NULL) { if (--buffer->refs == 0) { free (buffer->data); free (buffer); } } free (command); } libnbd-1.20.3/copy/nbd-ops.c0000644000175000017500000003460714616437241011212 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include "nbdcopy.h" #include "const-string-vector.h" #include "ispowerof2.h" #include "vector.h" static struct rw_ops nbd_ops; DEFINE_VECTOR_TYPE (handles, struct nbd_handle *); struct rw_nbd { struct rw rw; /* Because of multi-conn we have to remember enough state in this * handle in order to be able to open another connection with the * same parameters after nbd_rw_create* has been called once. */ enum { CREATE_URI, CREATE_SUBPROCESS } create_t; const char *uri; /* For CREATE_URI */ const_string_vector argv; /* For CREATE_SUBPROCESS */ direction d; handles handles; /* One handle per connection. */ bool can_zero; /* Cached nbd_can_zero. */ }; static void open_one_nbd_handle (struct rw_nbd *rwn) { struct nbd_handle *nbd; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s: %s\n", prog, nbd_get_error ()); exit (EXIT_FAILURE); } nbd_set_debug (nbd, verbose); /* Set the handle name for debugging. We could use rwn->rw.name * here but it is usually set to the lengthy NBD URI * (eg. "nbd://localhost:10809") which makes debug messages very * long. */ if (verbose) { char *name; const size_t index = rwn->handles.len; if (asprintf (&name, "%s%zu", rwn->d == READING ? "src" : "dst", index) == -1) { perror ("asprintf"); exit (EXIT_FAILURE); } nbd_set_handle_name (nbd, name); free (name); } if (extents && rwn->d == READING && nbd_add_meta_context (nbd, "base:allocation") == -1) { fprintf (stderr, "%s: %s\n", prog, nbd_get_error ()); exit (EXIT_FAILURE); } switch (rwn->create_t) { case CREATE_URI: nbd_set_uri_allow_local_file (nbd, true); /* Allow ?tls-psk-file. */ if (nbd_connect_uri (nbd, rwn->uri) == -1) { fprintf (stderr, "%s: %s: %s\n", prog, rwn->uri, nbd_get_error ()); exit (EXIT_FAILURE); } break; case CREATE_SUBPROCESS: if (nbd_connect_systemd_socket_activation (nbd, (char **)rwn->argv.ptr) == -1) { fprintf (stderr, "%s: %s: %s\n", prog, rwn->argv.ptr[0], nbd_get_error ()); exit (EXIT_FAILURE); } } /* Cache these. We assume with multi-conn that each handle will act * the same way. */ if (rwn->handles.len == 0) { int64_t block_size; rwn->can_zero = nbd_can_zero (nbd) > 0; rwn->rw.size = nbd_get_size (nbd); if (rwn->rw.size == -1) { fprintf (stderr, "%s: %s: %s\n", prog, rwn->rw.name, nbd_get_error ()); exit (EXIT_FAILURE); } block_size = nbd_get_block_size (nbd, LIBNBD_SIZE_PREFERRED); if (block_size == -1) { fprintf (stderr, "%s: %s: %s\n", prog, rwn->rw.name, nbd_get_error ()); exit (EXIT_FAILURE); } if (block_size > 0 && is_power_of_2 (block_size)) rwn->rw.preferred = block_size; else rwn->rw.preferred = 4096; } if (handles_append (&rwn->handles, nbd) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } } struct rw * nbd_rw_create_uri (const char *name, const char *uri, direction d) { struct rw_nbd *rwn = calloc (1, sizeof *rwn); if (rwn == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } rwn->rw.ops = &nbd_ops; rwn->rw.name = name; rwn->create_t = CREATE_URI; rwn->uri = uri; rwn->d = d; open_one_nbd_handle (rwn); return &rwn->rw; } struct rw * nbd_rw_create_subprocess (const char **argv, size_t argc, direction d) { size_t i; struct rw_nbd *rwn = calloc (1, sizeof *rwn); if (rwn == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } rwn->rw.ops = &nbd_ops; rwn->rw.name = argv[0]; rwn->create_t = CREATE_SUBPROCESS; rwn->d = d; /* We have to copy the args so we can null-terminate them. */ for (i = 0; i < argc; ++i) { if (const_string_vector_append (&rwn->argv, argv[i]) == -1) goto error; } if (const_string_vector_append (&rwn->argv, NULL) == -1) goto error; open_one_nbd_handle (rwn); return &rwn->rw; error: perror ("realloc"); exit (EXIT_FAILURE); } static void nbd_ops_close (struct rw *rw) { struct rw_nbd *rwn = (struct rw_nbd *)rw; size_t i; for (i = 0; i < rwn->handles.len; ++i) { if (nbd_shutdown (rwn->handles.ptr[i], 0) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (rwn->handles.ptr[i]); } handles_reset (&rwn->handles); const_string_vector_reset (&rwn->argv); free (rw); } static void nbd_ops_flush (struct rw *rw) { struct rw_nbd *rwn = (struct rw_nbd *)rw; size_t i; for (i = 0; i < rwn->handles.len; ++i) { if (nbd_flush (rwn->handles.ptr[i], 0) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } } } static bool nbd_ops_is_read_only (struct rw *rw) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (rwn->handles.len > 0) return nbd_is_read_only (rwn->handles.ptr[0]); else return false; } static bool nbd_ops_can_extents (struct rw *rw) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (rwn->handles.len > 0) return nbd_can_meta_context (rwn->handles.ptr[0], "base:allocation") > 0; else return false; } static bool nbd_ops_can_multi_conn (struct rw *rw) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (rwn->handles.len > 0) return nbd_can_multi_conn (rwn->handles.ptr[0]); else return false; } static void nbd_ops_start_multi_conn (struct rw *rw) { struct rw_nbd *rwn = (struct rw_nbd *)rw; size_t i; for (i = 1; i < connections; ++i) open_one_nbd_handle (rwn); assert (rwn->handles.len == connections); } static size_t nbd_ops_synch_read (struct rw *rw, void *data, size_t len, uint64_t offset) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (len > rw->size - offset) len = rw->size - offset; if (len == 0) return 0; if (nbd_pread (rwn->handles.ptr[0], data, len, offset, 0) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } return len; } static void nbd_ops_synch_write (struct rw *rw, const void *data, size_t len, uint64_t offset) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (nbd_pwrite (rwn->handles.ptr[0], data, len, offset, 0) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } } static bool nbd_ops_synch_zero (struct rw *rw, uint64_t offset, uint64_t count, bool allocate) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (!rwn->can_zero) return false; if (nbd_zero (rwn->handles.ptr[0], count, offset, allocate ? LIBNBD_CMD_FLAG_NO_HOLE : 0) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } return true; } static void nbd_ops_asynch_read (struct rw *rw, struct command *command, nbd_completion_callback cb) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (nbd_aio_pread (rwn->handles.ptr[command->worker->index], slice_ptr (command->slice), command->slice.len, command->offset, cb, 0) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } } static void nbd_ops_asynch_write (struct rw *rw, struct command *command, nbd_completion_callback cb) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (nbd_aio_pwrite (rwn->handles.ptr[command->worker->index], slice_ptr (command->slice), command->slice.len, command->offset, cb, 0) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } } static bool nbd_ops_asynch_zero (struct rw *rw, struct command *command, nbd_completion_callback cb, bool allocate) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (!rwn->can_zero) return false; assert (command->slice.len <= UINT32_MAX); if (nbd_aio_zero (rwn->handles.ptr[command->worker->index], command->slice.len, command->offset, cb, allocate ? LIBNBD_CMD_FLAG_NO_HOLE : 0) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } return true; } static unsigned nbd_ops_in_flight (struct rw *rw, size_t index) { struct rw_nbd *rwn = (struct rw_nbd *)rw; /* Since the commands are auto-retired in the callbacks we don't * need to count "done" commands. */ return nbd_aio_in_flight (rwn->handles.ptr[index]); } static void nbd_ops_get_polling_fd (struct rw *rw, size_t index, int *fd, int *direction) { struct rw_nbd *rwn = (struct rw_nbd *)rw; struct nbd_handle *nbd; nbd = rwn->handles.ptr[index]; *fd = nbd_aio_get_fd (nbd); if (*fd == -1) goto error; *direction = nbd_aio_get_direction (nbd); if (*direction == -1) goto error; return; error: fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } static void nbd_ops_asynch_notify_read (struct rw *rw, size_t index) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (nbd_aio_notify_read (rwn->handles.ptr[index]) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } } static void nbd_ops_asynch_notify_write (struct rw *rw, size_t index) { struct rw_nbd *rwn = (struct rw_nbd *)rw; if (nbd_aio_notify_write (rwn->handles.ptr[index]) == -1) { fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } } /* Get the extents. * * This is done synchronously, but that's fine because commands from * the previous work range in flight continue to run, it's difficult * to (sanely) start new work until we have the full list of extents, * and in almost every case the remote NBD server can answer our * request for extents in a single round trip. */ static int add_extent (void *vp, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error); static void nbd_ops_get_extents (struct rw *rw, size_t index, uint64_t offset, uint64_t count, extent_list *ret) { struct rw_nbd *rwn = (struct rw_nbd *)rw; extent_list exts = empty_vector; struct nbd_handle *nbd; nbd = rwn->handles.ptr[index]; ret->len = 0; while (count > 0) { const uint64_t old_offset = offset; size_t i; exts.len = 0; if (nbd_block_status_64 (nbd, count, offset, (nbd_extent64_callback) { .user_data = &exts, .callback = add_extent }, 0) == -1) { /* XXX We could call default_get_extents, but unclear if it's * the right thing to do if the server is returning errors. */ fprintf (stderr, "%s: %s\n", rw->name, nbd_get_error ()); exit (EXIT_FAILURE); } /* Copy the extents returned into the final list (ret). */ for (i = 0; i < exts.len; ++i) { assert (exts.ptr[i].offset == offset); if (exts.ptr[i].offset + exts.ptr[i].length > offset + count) { uint64_t d = exts.ptr[i].offset + exts.ptr[i].length - offset - count; exts.ptr[i].length -= d; assert (exts.ptr[i].offset + exts.ptr[i].length == offset + count); } if (exts.ptr[i].length == 0) continue; if (extent_list_append (ret, exts.ptr[i]) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } offset += exts.ptr[i].length; count -= exts.ptr[i].length; } /* The server should always make progress. */ if (offset == old_offset) { fprintf (stderr, "%s: NBD server is broken: it is not returning extent " "information.\n" "Try nbdcopy --no-extents as a workaround.\n", rw->name); exit (EXIT_FAILURE); } } free (exts.ptr); } static int add_extent (void *vp, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { extent_list *ret = vp; size_t i; if (strcmp (metacontext, "base:allocation") != 0 || *error) return 0; for (i = 0; i < nr_entries; i++) { struct extent e; e.offset = offset; e.length = entries[i].length; /* Note we deliberately don't care about the HOLE flag. There is * no need to read extent that reads as zeroes. We will convert * to it to a hole or allocated extents based on the command line * arguments. */ e.zero = (entries[i].flags & LIBNBD_STATE_ZERO) != 0; if (extent_list_append (ret, e) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } offset += entries[i].length; } return 0; } static struct rw_ops nbd_ops = { .ops_name = "nbd_ops", .close = nbd_ops_close, .is_read_only = nbd_ops_is_read_only, .can_extents = nbd_ops_can_extents, .can_multi_conn = nbd_ops_can_multi_conn, .start_multi_conn = nbd_ops_start_multi_conn, .flush = nbd_ops_flush, .synch_read = nbd_ops_synch_read, .synch_write = nbd_ops_synch_write, .synch_zero = nbd_ops_synch_zero, .asynch_read = nbd_ops_asynch_read, .asynch_write = nbd_ops_asynch_write, .asynch_zero = nbd_ops_asynch_zero, .in_flight = nbd_ops_in_flight, .get_polling_fd = nbd_ops_get_polling_fd, .asynch_notify_read = nbd_ops_asynch_notify_read, .asynch_notify_write = nbd_ops_asynch_notify_write, .get_extents = nbd_ops_get_extents, }; libnbd-1.20.3/copy/null-ops.c0000644000175000017500000000720014616437241011406 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include "nbdcopy.h" /* This sinks writes and aborts on any read-like operations. It * should be faster than using /dev/null because it "supports" fast * zeroing. */ static struct rw_ops null_ops; struct rw_null { struct rw rw; }; struct rw * null_create (const char *name) { struct rw_null *rw = calloc (1, sizeof *rw); if (rw == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } rw->rw.ops = &null_ops; rw->rw.name = name; rw->rw.size = INT64_MAX; rw->rw.preferred = 4096; return &rw->rw; } static void null_close (struct rw *rw) { free (rw); } static void null_flush (struct rw *rw) { /* nothing */ } static bool null_is_read_only (struct rw *rw) { return false; } static bool null_can_extents (struct rw *rw) { return false; } static bool null_can_multi_conn (struct rw *rw) { return true; } static void null_start_multi_conn (struct rw *rw) { /* nothing */ } static size_t null_synch_read (struct rw *rw, void *data, size_t len, uint64_t offset) { abort (); } static void null_synch_write (struct rw *rw, const void *data, size_t len, uint64_t offset) { /* nothing */ } static bool null_synch_zero (struct rw *rw, uint64_t offset, uint64_t count, bool allocate) { return true; } static void null_asynch_read (struct rw *rw, struct command *command, nbd_completion_callback cb) { abort (); } static void null_asynch_write (struct rw *rw, struct command *command, nbd_completion_callback cb) { int dummy = 0; cb.callback (cb.user_data, &dummy); } static bool null_asynch_zero (struct rw *rw, struct command *command, nbd_completion_callback cb, bool allocate) { int dummy = 0; cb.callback (cb.user_data, &dummy); return true; } static unsigned null_in_flight (struct rw *rw, size_t index) { return 0; } static void null_get_extents (struct rw *rw, size_t index, uint64_t offset, uint64_t count, extent_list *ret) { abort (); } static struct rw_ops null_ops = { .ops_name = "null_ops", .close = null_close, .is_read_only = null_is_read_only, .can_extents = null_can_extents, .can_multi_conn = null_can_multi_conn, .start_multi_conn = null_start_multi_conn, .flush = null_flush, .synch_read = null_synch_read, .synch_write = null_synch_write, .synch_zero = null_synch_zero, .asynch_read = null_asynch_read, .asynch_write = null_asynch_write, .asynch_zero = null_asynch_zero, .in_flight = null_in_flight, .get_polling_fd = get_polling_fd_not_supported, .asynch_notify_read = asynch_notify_read_write_not_supported, .asynch_notify_write = asynch_notify_read_write_not_supported, .get_extents = null_get_extents, }; libnbd-1.20.3/copy/pipe-ops.c0000644000175000017500000001061714616437241011377 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include "nbdcopy.h" static struct rw_ops pipe_ops; struct rw_pipe { struct rw rw; int fd; }; struct rw * pipe_create (const char *name, int fd) { struct rw_pipe *rwp = calloc (1, sizeof *rwp); if (rwp == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } /* Set size == -1 which means don't know. */ rwp->rw.ops = &pipe_ops; rwp->rw.name = name; rwp->rw.size = -1; rwp->rw.preferred = 4096; rwp->fd = fd; return &rwp->rw; } static void pipe_close (struct rw *rw) { struct rw_pipe *rwp = (struct rw_pipe *)rw; if (close (rwp->fd) == -1) { fprintf (stderr, "%s: close: %m\n", rw->name); exit (EXIT_FAILURE); } } static void pipe_flush (struct rw *rw) { /* We don't need to do anything here as the close will return an * error if the pipe could not be flushed. */ } static bool pipe_is_read_only (struct rw *rw) { return false; } static bool pipe_can_extents (struct rw *rw) { return false; } static bool pipe_can_multi_conn (struct rw *rw) { return false; } static void pipe_start_multi_conn (struct rw *rw) { /* Should never be called. */ abort (); } static size_t pipe_synch_read (struct rw *rw, void *data, size_t len, uint64_t offset) { struct rw_pipe *rwp = (struct rw_pipe *)rw; ssize_t r; r = read (rwp->fd, data, len); if (r == -1) { perror (rw->name); exit (EXIT_FAILURE); } return r; } static void pipe_synch_write (struct rw *rw, const void *data, size_t len, uint64_t offset) { struct rw_pipe *rwp = (struct rw_pipe *)rw; while (len > 0) { ssize_t r = write (rwp->fd, data, len); if (r == -1) { perror (rw->name); exit (EXIT_FAILURE); } data = (char *)data + r; len -= r; } } static bool pipe_synch_zero (struct rw *rw, uint64_t offset, uint64_t count, bool allocate) { return false; /* not supported by pipes */ } static void pipe_asynch_read (struct rw *rw, struct command *command, nbd_completion_callback cb) { abort (); /* See comment below. */ } static void pipe_asynch_write (struct rw *rw, struct command *command, nbd_completion_callback cb) { abort (); /* See comment below. */ } static bool pipe_asynch_zero (struct rw *rw, struct command *command, nbd_completion_callback cb, bool allocate) { return false; /* not supported by pipes */ } static unsigned pipe_in_flight (struct rw *rw, size_t index) { return 0; } static struct rw_ops pipe_ops = { .ops_name = "pipe_ops", .close = pipe_close, .is_read_only = pipe_is_read_only, .can_extents = pipe_can_extents, .can_multi_conn = pipe_can_multi_conn, .start_multi_conn = pipe_start_multi_conn, .flush = pipe_flush, .synch_read = pipe_synch_read, .synch_write = pipe_synch_write, .synch_zero = pipe_synch_zero, /* Asynch pipe read/write operations are not defined. These should * never be called because pipes/streams/sockets force synchronous * mode. Because calling a NULL pointer screws up the stack trace * when we're not using frame pointers, these are defined to * functions that call abort(). */ .asynch_read = pipe_asynch_read, .asynch_write = pipe_asynch_write, .asynch_zero = pipe_asynch_zero, .in_flight = pipe_in_flight, .get_polling_fd = get_polling_fd_not_supported, .asynch_notify_read = asynch_notify_read_write_not_supported, .asynch_notify_write = asynch_notify_read_write_not_supported, .get_extents = default_get_extents, }; libnbd-1.20.3/copy/progress.c0000644000175000017500000000572314525371754011516 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include "array-size.h" #include "nbdcopy.h" /* Display the progress bar. */ static void do_progress_bar (off_t pos, int64_t size) { /* Note the spinner is covered with the cursor which usually makes * it appear inverse video. */ static const char *spinner[] = { "▝", "▐", "▗", "▃", "▖", "▍", "▘", "▀" }; static const char *spinner_100 = "█"; static int spinpos = 0; double frac = (double) pos / size; char msg[80]; size_t n, i; if (frac < 0) frac = 0; else if (frac > 1) frac = 1; if (frac == 1) { snprintf (msg, sizeof msg, "%s 100%% [****************************************]\n", spinner_100); progress = false; /* Don't print any more progress bar messages. */ } else { snprintf (msg, sizeof msg, "%s %3d%% [----------------------------------------]\r", spinner[spinpos], (int)(100*frac)); n = strcspn (msg, "-"); for (i = 0; i < 40*frac; ++i) msg[n+i] = '*'; spinpos = (spinpos+1) % ARRAY_SIZE (spinner); } #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wunused-result" write (fileno (stderr), msg, strlen (msg)); #pragma GCC diagnostic pop } /* Machine-readable progress bar used with --progress-fd. */ static void do_progress_bar_fd (off_t pos, int64_t size) { double frac = (double) pos / size; char msg[80]; if (frac < 0) frac = 0; else if (frac > 1) frac = 1; if (frac == 1) snprintf (msg, sizeof msg, "100/100\n"); else snprintf (msg, sizeof msg, "%d/100\n", (int)(100*frac)); #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wunused-result" write (progress_fd, msg, strlen (msg)); #pragma GCC diagnostic pop } void progress_bar (off_t pos, int64_t size) { static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; if (!progress) return; if (size == 0) return; pthread_mutex_lock (&lock); if (progress_fd == -1) do_progress_bar (pos, size); else do_progress_bar_fd (pos, size); pthread_mutex_unlock (&lock); } libnbd-1.20.3/copy/synch-copying.c0000644000175000017500000000622314616437241012433 /* NBD client library in userspace. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include "nbdcopy.h" void synch_copying (void) { uint64_t offset = 0; unsigned char *buf; buf = malloc (request_size); if (buf == NULL) { perror ("malloc"); exit (EXIT_FAILURE); } /* If the source size is unknown then we copy data and cannot use * extent information. */ if (src->size == -1) { size_t r; while ((r = src->ops->synch_read (src, buf, request_size, offset)) > 0) { dst->ops->synch_write (dst, buf, r, offset); offset += r; progress_bar (offset, src->size); } } /* Otherwise we know how much we're copying, so we can copy in whole * blocks and use extent information to optimize the case. */ else { while (offset < src->size) { extent_list exts = empty_vector; uint64_t count = src->size - offset; size_t i, r; if (count > request_size) count = request_size; if (extents) src->ops->get_extents (src, 0, offset, count, &exts); else default_get_extents (src, 0, offset, count, &exts); for (i = 0; i < exts.len; ++i) { assert (exts.ptr[i].length <= count); if (exts.ptr[i].zero) { if (!dst->ops->synch_zero (dst, offset, exts.ptr[i].length, false) && !dst->ops->synch_zero (dst, offset, exts.ptr[i].length, true)) { /* If efficient zeroing (punching a hole or allocating * space) are possible, write zeroes the hard way. */ memset (buf, 0, exts.ptr[i].length); dst->ops->synch_write (dst, buf, exts.ptr[i].length, offset); } offset += exts.ptr[i].length; } else /* data */ { r = src->ops->synch_read (src, buf, exts.ptr[i].length, offset); /* These cases should never happen unless the file is * truncated underneath us. */ if (r == 0 || r < exts.ptr[i].length) { fprintf (stderr, "%s: unexpected end of file\n", src->name); exit (EXIT_FAILURE); } dst->ops->synch_write (dst, buf, r, offset); offset += r; progress_bar (offset, src->size); } } free (exts.ptr); } /* while */ } free (buf); } libnbd-1.20.3/copy/copy-block-to-nbd.sh0000755000175000017500000000271414553440063013254 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires_root requires_caps cap_sys_admin requires $NBDKIT --exit-with-parent --version requires test -r /sys/module/nbd requires nbd-client --version # /dev/nbd0 must not be in use. requires_not nbd-client -c /dev/nbd0 pidfile=copy-block-to-nbd.pid sock=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) cleanup_fn rm -f $pidfile $sock cleanup_fn nbd-client -d /dev/nbd0 # Run an nbdkit server to act as the backing for /dev/nbd0. $NBDKIT --exit-with-parent -f -v -P $pidfile -U $sock pattern size=5M & wait_for_pidfile $NBDKIT $pidfile nbd-client -unix $sock /dev/nbd0 -b 512 $VG nbdcopy -- /dev/nbd0 [ $NBDKIT --exit-with-parent -v memory 5M ] libnbd-1.20.3/copy/copy-file-to-file.sh0000755000175000017500000000263614525371754013271 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires cmp --version requires dd --version requires dd oflag=seek_bytes $out1 cat $out1 qemu-img check $file2 > $out2 cat $out2 ! grep " 0.00% compressed clusters" $out1 grep " 0.00% compressed clusters" $out2 # Logical content of the files should be identical. qemu-img compare -f qcow2 $file1 -F qcow2 $file2 libnbd-1.20.3/copy/copy-nbd-to-block.sh0000755000175000017500000000312014616437241013250 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires_root requires_caps cap_sys_admin requires $NBDKIT --exit-with-parent --version requires test -r /sys/module/nbd requires nbd-client --version # /dev/nbd0 must not be in use. requires_not nbd-client -c /dev/nbd0 pidfile=copy-nbd-to-block.pid sock=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) cleanup_fn rm -f $pidfile $sock cleanup_fn nbd-client -d /dev/nbd0 # Run an nbdkit server to act as the backing for /dev/nbd0. $NBDKIT --exit-with-parent -f -v -P $pidfile -U $sock memory 5M & wait_for_pidfile $NBDKIT $pidfile nbd-client -unix $sock /dev/nbd0 -b 512 $VG nbdcopy -v -- [ $NBDKIT --exit-with-parent -v pattern size=5M ] /dev/nbd0 # Check that /dev/nbd0 is still a block device and we didn't # accidentally overwrite it with a regular file. test -b /dev/nbd0 libnbd-1.20.3/copy/copy-nbd-to-file.sh0000755000175000017500000000302514553254215013077 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --exit-with-parent --version requires hexdump -C /dev/null requires stat --version file=copy-nbd-to-file.file cleanup_fn rm -f $file $VG nbdcopy -- [ $NBDKIT --exit-with-parent -v \ data data='0x55 0xAA @268435454 0xAA 0x55' ] $file if [ "$(stat -c %s $file)" -ne $(( 256 * 1024 * 1024 )) ]; then echo "$0: incorrect amount of data copied" exit 1 fi # Test the data is as expected. test "$(hexdump -C $file)" = \ '00000000 55 aa 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |U...............| 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0ffffff0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 aa 55 |...............U| 10000000' libnbd-1.20.3/copy/copy-nbd-to-hexdump.sh0000755000175000017500000000401114553254237013632 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --exit-with-parent --version requires hexdump -C /dev/null # This test requires nbdkit >= 1.22. minor=$( $NBDKIT --dump-config | grep ^version_minor | cut -d= -f2 ) requires test $minor -ge 22 file=copy-nbd-to-hexdump.file cleanup_fn rm -f $file $VG nbdcopy -- [ $NBDKIT --exit-with-parent \ data data=' ( "Hello" )*2000 ' size=8192 \ ] - | hexdump -C | tail > $file cat $file # Test the data is as expected. test "$(cat $file)" = \ '00001f70 6c 6f 48 65 6c 6c 6f 48 65 6c 6c 6f 48 65 6c 6c |loHelloHelloHell| 00001f80 6f 48 65 6c 6c 6f 48 65 6c 6c 6f 48 65 6c 6c 6f |oHelloHelloHello| 00001f90 48 65 6c 6c 6f 48 65 6c 6c 6f 48 65 6c 6c 6f 48 |HelloHelloHelloH| 00001fa0 65 6c 6c 6f 48 65 6c 6c 6f 48 65 6c 6c 6f 48 65 |elloHelloHelloHe| 00001fb0 6c 6c 6f 48 65 6c 6c 6f 48 65 6c 6c 6f 48 65 6c |lloHelloHelloHel| 00001fc0 6c 6f 48 65 6c 6c 6f 48 65 6c 6c 6f 48 65 6c 6c |loHelloHelloHell| 00001fd0 6f 48 65 6c 6c 6f 48 65 6c 6c 6f 48 65 6c 6c 6f |oHelloHelloHello| 00001fe0 48 65 6c 6c 6f 48 65 6c 6c 6f 48 65 6c 6c 6f 48 |HelloHelloHelloH| 00001ff0 65 6c 6c 6f 48 65 6c 6c 6f 48 65 6c 6c 6f 48 65 |elloHelloHelloHe| 00002000' libnbd-1.20.3/copy/copy-nbd-to-nbd.sh0000755000175000017500000000353314553437426012736 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --exit-with-parent --version requires cmp /dev/null /dev/null requires hexdump -C /dev/null pidfile1=copy-nbd-to-nbd.pid1 pidfile2=copy-nbd-to-nbd.pid2 file1=copy-nbd-to-nbd.file1 file2=copy-nbd-to-nbd.file2 sock1=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) sock2=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) cleanup_fn rm -f $pidfile1 $pidfile2 $file1 $file2 $sock1 $sock2 $NBDKIT --exit-with-parent -f -v -P $pidfile1 -U $sock1 pattern size=10M & wait_for_pidfile $NBDKIT $pidfile1 $NBDKIT --exit-with-parent -f -v -P $pidfile2 -U $sock2 memory size=10M & wait_for_pidfile $NBDKIT $pidfile2 $VG nbdcopy "nbd+unix:///?socket=$sock1" "nbd+unix:///?socket=$sock2" # Download the file from both servers and check they are the same. $VG nbdcopy "nbd+unix:///?socket=$sock1" $file1 $VG nbdcopy "nbd+unix:///?socket=$sock2" $file2 ls -l $file1 $file2 cmp $file1 $file2 # Test the data is at least non-zero. test "$(hexdump -C $file1 | head -1)" = "00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 |................|" libnbd-1.20.3/copy/copy-nbd-to-nbd2.sh0000755000175000017500000000210214553254265013005 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT sparse-random --version # This plugin self-compares the written data with the read data so we # don't need to do any comparison ourselves. $NBDKIT -U - sparse-random 10G --run '$VG nbdcopy "$uri" "$uri"' libnbd-1.20.3/copy/copy-nbd-to-null.sh0000755000175000017500000000230114553437444013135 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --exit-with-parent --version requires cmp /dev/null /dev/null pidfile=copy-nbd-to-null.pid file=copy-nbd-to-null.file sock=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) cleanup_fn rm -f $pidfile $file $sock $NBDKIT --exit-with-parent -f -v -P $pidfile -U $sock pattern size=10M & wait_for_pidfile $NBDKIT $pidfile $VG nbdcopy "nbd+unix:///?socket=$sock" null: libnbd-1.20.3/copy/copy-nbd-to-small-block-error.sh0000755000175000017500000000355314616437241015517 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires_root requires_caps cap_sys_admin requires $NBDKIT --exit-with-parent --version requires test -r /sys/module/nbd requires nbd-client --version # /dev/nbd0 must not be in use. requires_not nbd-client -c /dev/nbd0 pidfile1=copy-nbd-to-small-block-error.pid1 pidfile2=copy-nbd-to-small-block-error.pid2 sock1=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) sock2=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) cleanup_fn rm -f $pidfile1 $pidfile2 $sock1 $sock2 cleanup_fn nbd-client -d /dev/nbd0 $NBDKIT --exit-with-parent -f -v -P $pidfile1 -U $sock1 pattern size=10M & wait_for_pidfile $NBDKIT $pidfile1 $NBDKIT --exit-with-parent -f -v -P $pidfile2 -U $sock2 memory size=5M & wait_for_pidfile $NBDKIT $pidfile2 nbd-client -unix $sock2 /dev/nbd0 -b 512 # The source is larger than the destination device so we expect this # test to fail. In the log you should see: # nbdcopy: error: destination size (...) is smaller than source size (...) if nbdcopy -v "nbd+unix:///?socket=$sock1" /dev/nbd0; then echo "$0: expected this test to fail" exit 1 fi libnbd-1.20.3/copy/copy-nbd-to-small-nbd-error.sh0000755000175000017500000000352414553254330015162 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --exit-with-parent --version pidfile1=copy-nbd-to-nbd-error.pid1 pidfile2=copy-nbd-to-nbd-error.pid2 sock1=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) sock2=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) cleanup_fn rm -f $pidfile1 $pidfile2 $sock1 $sock2 $NBDKIT --exit-with-parent -f -v -P $pidfile1 -U $sock1 pattern size=10M & # Wait for the pidfile to appear. for i in {1..60}; do if test -f $pidfile1; then break fi sleep 1 done if ! test -f $pidfile1; then echo "$0: $NBDKIT did not start up" exit 1 fi # Since this is too small, we expect nbdcopy below to give an error. $NBDKIT --exit-with-parent -f -v -P $pidfile2 -U $sock2 memory size=1M & # Wait for the pidfile to appear. for i in {1..60}; do if test -f $pidfile2; then break fi sleep 1 done if ! test -f $pidfile2; then echo "$0: $NBDKIT did not start up" exit 1 fi if $VG nbdcopy "nbd+unix:///?socket=$sock1" "nbd+unix:///?socket=$sock2"; then echo "$0: expected this test to fail" exit 1 fi libnbd-1.20.3/copy/copy-nbd-to-sparse-file.sh0000755000175000017500000000311614553254342014374 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires cmp --version requires dd --version requires dd oflag=seek_bytes $file if [ "$(stat -c %s $file)" -ne $(( 10 * 1024 * 1024 )) ]; then echo "$0: incorrect amount of data copied" exit 1 fi libnbd-1.20.3/copy/copy-nbd-error.sh0000755000175000017500000000722414565712165012704 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Tests several scenarios of handling NBD server errors # Serves as a regression test for the CVE-2022-0485 fix. . ../tests/functions.sh set -e set -x requires $NBDKIT --exit-with-parent --version requires $NBDKIT --filter=noextents null --version requires $NBDKIT --filter=error pattern --version requires $NBDKIT --filter=nozero memory --version fail=0 # Failure to negotiate block status should not be fatal, but merely downgrade # to reading the entire image as if data if $NBDKIT --help | grep 'no-meta-contexts'; then echo "Testing early extents failures on source" $VG nbdcopy -- [ $NBDKIT --exit-with-parent -v --no-meta-contexts \ pattern 5M ] null: || fail=1 fi # Failure to get block status should not be fatal, but merely downgrade to # reading the entire image as if data echo "Testing late extents failures on source" $VG nbdcopy -- [ $NBDKIT --exit-with-parent -v --filter=error pattern 5M \ error-extents-rate=1 ] null: || fail=1 # Failure to read should be fatal echo "Testing read failures on non-sparse source" $VG nbdcopy -- [ $NBDKIT --exit-with-parent -v --filter=error pattern 5M \ error-pread-rate=0.5 ] null: && fail=1 # However, reliable block status on a sparse image can avoid the need to read echo "Testing read failures on sparse source" $VG nbdcopy -- [ $NBDKIT --exit-with-parent -v --filter=error null 5M \ error-pread-rate=1 ] null: || fail=1 # Failure to write data should be fatal echo "Testing write data failures on arbitrary destination" $VG nbdcopy -- [ $NBDKIT --exit-with-parent -v pattern 5M ] \ [ $NBDKIT --exit-with-parent -v --filter=error --filter=noextents \ memory 5M error-pwrite-rate=0.5 ] && fail=1 # However, writing zeroes can bypass the need for normal writes echo "Testing write data failures from sparse source" $VG nbdcopy -- [ $NBDKIT --exit-with-parent -v null 5M ] \ [ $NBDKIT --exit-with-parent -v --filter=error --filter=noextents \ memory 5M error-pwrite-rate=1 ] || fail=1 # Failure to write zeroes should be fatal echo "Testing write zero failures on arbitrary destination" $VG nbdcopy -- [ $NBDKIT --exit-with-parent -v null 5M ] \ [ $NBDKIT --exit-with-parent -v --filter=error memory 5M \ error-zero-rate=1 ] && fail=1 # However, assuming/learning destination is zero can skip need to write echo "Testing write failures on pre-zeroed destination" $VG nbdcopy --destination-is-zero -- \ [ $NBDKIT --exit-with-parent -v null 5M ] \ [ $NBDKIT --exit-with-parent -v --filter=error memory 5M \ error-pwrite-rate=1 error-zero-rate=1 ] || fail=1 # Likewise, when write zero is not advertised, fallback to normal write works echo "Testing write zeroes to destination without zero support" $VG nbdcopy -- [ $NBDKIT --exit-with-parent -v null 5M ] \ [ $NBDKIT --exit-with-parent -v --filter=nozero --filter=error memory 5M \ error-zero-rate=1 ] || fail=1 exit $fail libnbd-1.20.3/copy/copy-progress-bar.sh0000755000175000017500000000252714525371754013422 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires dd if=/dev/null of=/dev/null requires test -r /dev/urandom file=copy-progress-bar.file file2=copy-progress-bar.file2 file3=copy-progress-bar.file3 cleanup_fn rm -f $file $file2 $file3 dd if=/dev/urandom of=$file bs=512 count=1 # Check that a regular progress bar works. # This writes to stderr $VG nbdcopy --progress $file $file2 # Check that a machine-readable progress bar works. exec 3>$file3 $VG nbdcopy --progress=3 $file $file2 exec 3>&- cat $file3 # 100/100 must always be printed. grep "100/100" $file3 libnbd-1.20.3/copy/copy-sparse.sh0000755000175000017500000000617714525371754012316 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires nbdkit --version requires nbdkit --exit-with-parent --version requires nbdkit data --version requires nbdkit eval --version out=copy-sparse.out cleanup_fn rm -f $out # Copy from a sparse data disk to an nbdkit-eval-plugin instance which # is logging everything. This allows us to see exactly what nbdcopy # is writing, to ensure it is writing and zeroing the target as # expected. Force request size to match nbdkit default sparse # allocator block size (32K). $VG nbdcopy -S 0 --request-size=32768 -- \ [ nbdkit --exit-with-parent data data=' 1 @1073741823 1 @4294967295 1 @4294967296 1 ' ] \ [ nbdkit --exit-with-parent eval \ get_size=' echo 7E ' \ pwrite=" cat >/dev/null; echo \$@ >> $out " \ trim=" echo \$@ >> $out " \ zero=" echo \$@ >> $out " ] # Order of the output could vary because requests are sent in # parallel. LC_ALL=C sort -k1,1 -k2,2n -k3,3n -o $out $out echo Output: cat $out # Check the output matches expected. if [ "$(cat $out)" != "pwrite 1 4294967296 pwrite 32768 0 pwrite 32768 1073709056 pwrite 32768 4294934528 zero 134184960 32768 may_trim zero 134184960 939524096 may_trim zero 134184960 4160749568 may_trim zero 134217728 134217728 may_trim zero 134217728 268435456 may_trim zero 134217728 402653184 may_trim zero 134217728 536870912 may_trim zero 134217728 671088640 may_trim zero 134217728 805306368 may_trim zero 134217728 1073741824 may_trim zero 134217728 1207959552 may_trim zero 134217728 1342177280 may_trim zero 134217728 1476395008 may_trim zero 134217728 1610612736 may_trim zero 134217728 1744830464 may_trim zero 134217728 1879048192 may_trim zero 134217728 2013265920 may_trim zero 134217728 2147483648 may_trim zero 134217728 2281701376 may_trim zero 134217728 2415919104 may_trim zero 134217728 2550136832 may_trim zero 134217728 2684354560 may_trim zero 134217728 2818572288 may_trim zero 134217728 2952790016 may_trim zero 134217728 3087007744 may_trim zero 134217728 3221225472 may_trim zero 134217728 3355443200 may_trim zero 134217728 3489660928 may_trim zero 134217728 3623878656 may_trim zero 134217728 3758096384 may_trim zero 134217728 3892314112 may_trim zero 134217728 4026531840 may_trim" ]; then echo "$0: output does not match expected" exit 1 fi libnbd-1.20.3/copy/copy-sparse-allocated.sh0000755000175000017500000000475014553254377014241 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Adapted from copy-sparse.sh. . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT --exit-with-parent --version requires $NBDKIT data --version requires $NBDKIT eval --version out=copy-sparse-allocated.out cleanup_fn rm -f $out $VG nbdcopy --allocated --request-size=32K -- \ [ $NBDKIT --exit-with-parent data data=' 1 @1073741823 1 @4294967295 1 @4294967296 1 ' ] \ [ $NBDKIT --exit-with-parent eval \ get_size=' echo 7E ' \ pwrite=" cat >/dev/null; echo \$@ >> $out " \ trim=" echo \$@ >> $out " \ zero=" echo \$@ >> $out " ] sort -o $out $out echo Output: cat $out if [ "$(cat $out)" != "pwrite 1 4294967296 pwrite 32768 0 pwrite 32768 1073709056 pwrite 32768 4294934528 zero 134184960 32768 zero 134184960 4160749568 zero 134184960 939524096 zero 134217728 1073741824 zero 134217728 1207959552 zero 134217728 134217728 zero 134217728 1342177280 zero 134217728 1476395008 zero 134217728 1610612736 zero 134217728 1744830464 zero 134217728 1879048192 zero 134217728 2013265920 zero 134217728 2147483648 zero 134217728 2281701376 zero 134217728 2415919104 zero 134217728 2550136832 zero 134217728 268435456 zero 134217728 2684354560 zero 134217728 2818572288 zero 134217728 2952790016 zero 134217728 3087007744 zero 134217728 3221225472 zero 134217728 3355443200 zero 134217728 3489660928 zero 134217728 3623878656 zero 134217728 3758096384 zero 134217728 3892314112 zero 134217728 402653184 zero 134217728 4026531840 zero 134217728 536870912 zero 134217728 671088640 zero 134217728 805306368" ]; then echo "$0: output does not match expected" exit 1 fi libnbd-1.20.3/copy/copy-sparse-no-extents.sh0000755000175000017500000000514014553254421014375 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Adapted from copy-sparse.sh # # This test depends on the nbdkit default sparse block size (32K). . ../tests/functions.sh set -e set -x # Skip this test under valgrind, it takes too long. if [ "x$LIBNBD_VALGRIND" = "x1" ]; then echo "$0: test skipped under valgrind" exit 77 fi requires $NBDKIT --version requires $NBDKIT --exit-with-parent --version requires $NBDKIT data --version requires $NBDKIT eval --version out=copy-sparse-no-extents.out cleanup_fn rm -f $out $VG nbdcopy --request-size=32M --no-extents -S 0 -- \ [ $NBDKIT --exit-with-parent data data=' 1 @1073741823 1 ' ] \ [ $NBDKIT --exit-with-parent eval \ get_size=' echo 7E ' \ pwrite=" cat >/dev/null; echo \$@ >> $out " \ trim=" echo \$@ >> $out " \ zero=" echo \$@ >> $out " ] LC_ALL=C sort -k1,1 -k2,2n -k3,3n -o $out $out echo Output: cat $out if [ "$(cat $out)" != "pwrite 33554432 0 pwrite 33554432 33554432 pwrite 33554432 67108864 pwrite 33554432 100663296 pwrite 33554432 134217728 pwrite 33554432 167772160 pwrite 33554432 201326592 pwrite 33554432 234881024 pwrite 33554432 268435456 pwrite 33554432 301989888 pwrite 33554432 335544320 pwrite 33554432 369098752 pwrite 33554432 402653184 pwrite 33554432 436207616 pwrite 33554432 469762048 pwrite 33554432 503316480 pwrite 33554432 536870912 pwrite 33554432 570425344 pwrite 33554432 603979776 pwrite 33554432 637534208 pwrite 33554432 671088640 pwrite 33554432 704643072 pwrite 33554432 738197504 pwrite 33554432 771751936 pwrite 33554432 805306368 pwrite 33554432 838860800 pwrite 33554432 872415232 pwrite 33554432 905969664 pwrite 33554432 939524096 pwrite 33554432 973078528 pwrite 33554432 1006632960 pwrite 33554432 1040187392" ]; then echo "$0: output does not match expected" exit 1 fi libnbd-1.20.3/copy/copy-sparse-request-size.sh0000755000175000017500000000505014553254442014734 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Adapted from copy-sparse-no-extents.sh # # This test depends on the nbdkit default sparse block size (32K). . ../tests/functions.sh set -e set -x # Skip this test under valgrind, it takes too long. if [ "x$LIBNBD_VALGRIND" = "x1" ]; then echo "$0: test skipped under valgrind" exit 77 fi requires $NBDKIT --version requires $NBDKIT --exit-with-parent --version requires $NBDKIT data --version requires $NBDKIT eval --version out=copy-sparse-request-size.out cleanup_fn rm -f $out $VG nbdcopy --no-extents -S 0 --request-size=1M -- \ [ $NBDKIT --exit-with-parent data data=' 1 @33554431 1 ' ] \ [ $NBDKIT --exit-with-parent eval \ get_size=' echo 33554432 ' \ pwrite=" cat >/dev/null; echo \$@ >> $out " \ trim=" echo \$@ >> $out " \ zero=" echo \$@ >> $out " ] LC_ALL=C sort -k1,1 -k2,2n -k3,3n -o $out $out echo Output: cat $out if [ "$(cat $out)" != "pwrite 1048576 0 pwrite 1048576 1048576 pwrite 1048576 2097152 pwrite 1048576 3145728 pwrite 1048576 4194304 pwrite 1048576 5242880 pwrite 1048576 6291456 pwrite 1048576 7340032 pwrite 1048576 8388608 pwrite 1048576 9437184 pwrite 1048576 10485760 pwrite 1048576 11534336 pwrite 1048576 12582912 pwrite 1048576 13631488 pwrite 1048576 14680064 pwrite 1048576 15728640 pwrite 1048576 16777216 pwrite 1048576 17825792 pwrite 1048576 18874368 pwrite 1048576 19922944 pwrite 1048576 20971520 pwrite 1048576 22020096 pwrite 1048576 23068672 pwrite 1048576 24117248 pwrite 1048576 25165824 pwrite 1048576 26214400 pwrite 1048576 27262976 pwrite 1048576 28311552 pwrite 1048576 29360128 pwrite 1048576 30408704 pwrite 1048576 31457280 pwrite 1048576 32505856" ]; then echo "$0: output does not match expected" exit 1 fi libnbd-1.20.3/copy/copy-sparse-to-stream.sh0000755000175000017500000000276314553254453014221 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Stream from a sparse NBD source. The NBD source uses a bandwidth # limiter so this will be very slow unless nbdcopy correctly handles # extents. . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT --exit-with-parent --version requires $NBDKIT data --version requires $NBDKIT --version --filter=rate null # Copy rate is 512Kbps. nbdcopy should only need to copy two 32Kbyte # extents (2 * 32 * 8 = 512) so this should not take longer than a # second. But if nbdcopy is ignoring extents it will take much, much # longer. $VG nbdcopy -- \ [ $NBDKIT --exit-with-parent \ data data=' 1 @1073741823 1 ' \ --filter=rate rate=512K \ ] \ - >/dev/null libnbd-1.20.3/copy/copy-stdin-to-nbd.sh0000755000175000017500000000200614553254464013305 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --exit-with-parent --version requires dd if=/dev/null of=/dev/null dd if=/dev/zero bs=1M count=10 | $VG nbdcopy -- - [ $NBDKIT --exit-with-parent -v memory size=10M ] libnbd-1.20.3/copy/copy-stdin-to-null.sh0000755000175000017500000000164514525371754013525 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires dd if=/dev/null of=/dev/null dd if=/dev/zero bs=1M count=10 | $VG nbdcopy - null: libnbd-1.20.3/copy/copy-tls.sh0000755000175000017500000000444414553437530011612 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Check that TLS to/from NBD servers works. It should be transparent # as far as nbdcopy code is concerned, but using nbdcopy and TLS # together stresses the library in unusual ways. . ../tests/functions.sh set -e set -x requires test "x$PSKTOOL" != "x" requires $NBDKIT --exit-with-parent --version requires bash -c "$NBDKIT --dump-config | grep tls=yes" requires cmp /dev/null /dev/null requires hexdump -C /dev/null pskfile=copy-tls.psk pidfile1=copy-tls.pid1 pidfile2=copy-tls.pid2 file1=copy-tls.file1 file2=copy-tls.file2 sock1=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) sock2=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) cleanup_fn rm -f $pskfile $pidfile1 $pidfile2 $file1 $file2 $sock1 $sock2 $PSKTOOL -u alice -p $pskfile $NBDKIT --exit-with-parent -f -v -P $pidfile1 -U $sock1 \ --tls=require --tls-psk=$pskfile \ pattern size=100M & uri1="nbds+unix://alice@/?socket=$sock1&tls-psk-file=$pskfile" wait_for_pidfile $NBDKIT $pidfile1 $NBDKIT --exit-with-parent -f -v -P $pidfile2 -U $sock2 \ --tls=require --tls-psk=$pskfile \ memory size=100M & uri2="nbds+unix://alice@/?socket=$sock2&tls-psk-file=$pskfile" wait_for_pidfile $NBDKIT $pidfile2 $VG nbdcopy "$uri1" "$uri2" # Download the file from both servers and check they are the same. $VG nbdcopy "$uri1" $file1 $VG nbdcopy "$uri2" $file2 ls -l $file1 $file2 cmp $file1 $file2 # Test the data is at least non-zero. test "$(hexdump -C $file1 | head -1)" = "00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 |................|" libnbd-1.20.3/copy/copy-zero-to-nbd.sh0000755000175000017500000000220514553437545013147 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --exit-with-parent --version pidfile=copy-zero-to-nbd.pid sock=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX) cleanup_fn rm -f $pidfile $sock $NBDKIT --exit-with-parent -f -v -P $pidfile -U $sock memory size=10M & wait_for_pidfile $NBDKIT $pidfile $VG nbdcopy -p /dev/null "nbd+unix:///?socket=$sock" libnbd-1.20.3/copy/copy-zero-to-null.sh0000755000175000017500000000155014525371754013356 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x $VG nbdcopy -p /dev/null null: libnbd-1.20.3/copy/nbdcopy.pod0000644000175000017500000002423014564077241011637 =head1 NAME nbdcopy - copy to and from an NBD server =head1 SYNOPSIS nbdcopy [--allocated] [-C N|--connections=N] [--destination-is-zero|--target-is-zero] [--flush] [--no-extents] [-p|--progress|--progress=FD] [--queue-size=N] [--request-size=N] [-R N|--requests=N] [-S N|--sparse=N] [--synchronous] [-T N|--threads=N] [-v|--verbose] SOURCE DESTINATION =for paragraph SOURCE, DESTINATION := - | FILE | DEVICE | NBD-URI | [ CMD ARGS ... ] DESTINATION += null: =for paragraph nbdcopy --help =for paragraph nbdcopy -V|--version =head1 EXAMPLES =head2 nbdcopy nbd://example.com local.img This copies everything from the NBD server at C to a local file called F. =head2 nbdcopy nbd://example.com - | file - This streams the first part of the disk on the NBD server at C into the L command. Note here that C<-> means to stream to stdout (and therefore into the pipe to the file command). L is another way to detect the content on an NBD server. =head2 nbdcopy -p /dev/sdX "nbd+unix:///?socket=/tmp/unixsock" Copy the full local hard disk C to the NBD server listening on the Unix domain socket F. Because of the I<-p> option this will print a progress bar. =head2 nbdcopy nbd://server1 nbd://server2 Copy a full disk from one NBD server to another. =head2 nbdcopy -- [ qemu-nbd -r -f qcow2 https://example.com/disk.qcow2 ] - Run L as a subprocess to open URL C, which is then streamed to stdout (C<->), converted to blocks of raw format data. Note C<--> to prevent qemu-nbd flags from being interpreted as nbdcopy flags. =head2 cat disk1 disk2 | nbdcopy -- - [ qemu-nbd -f qcow2 output.qcow2 ] Concatenate two raw-format disk images into the qcow2 file F. The output file has to be precreated. =head2 nbdcopy nbd://server null: Read the contents of the NBD server as fast as possible and throw it away (write it to a virtual null device). This is useful for benchmarking NBD servers and/or nbdcopy. =head1 DESCRIPTION nbdcopy copies to and from an NBD server. It can upload a local file to an NBD server, or download the contents of an NBD server to a local file, device or stdin/stdout. It can also copy between NBD servers. The local file can be a file, a block device (eg. C), or C<-> which means stream in from stdin or stream out to stdout. The NBD server can be specified using an NBD URI (like C). The NBD server can be local or remote, and encryption can be used if libnbd was built with encryption support. Alternately you can use square brackets around a L or L command to run the NBD server as a subprocess of nbdcopy. The destination may be the special word C to throw away the output. For more complex copying operations including converting between disk formats use C, see L. =head1 OPTIONS =over 4 =item B<--help> Display brief command line help and exit. =item B<--allocated> Normally nbdcopy tries to create sparse output (with holes) if the destination supports that. It does this in two ways: either using extent information from the source to copy holes (see I<--no-extents>), or by detecting runs of zeroes (see I<-S>). If you use I<--allocated> then nbdcopy creates a fully allocated, non-sparse output on the destination. =item B<-C> N =item B<--connections=>N Set the maximum number of NBD connections ("multi-conn"). By default nbdcopy will try to use multi-conn with up to 4 connections if the NBD server supports it. If copying between NBD servers then nbdcopy cannot use multi-conn if either of the servers does not support it. =item B<--destination-is-zero> =item B<--target-is-zero> Assume the destination is already zeroed. This allows nbdcopy to skip copying blocks of zeroes from the source to the destination. This is not safe unless the destination device is already zeroed. (I<--target-is-zero> is provided for compatibility with L.) =item B<--flush> Flush writes to ensure that everything is written to persistent storage before nbdcopy exits. =item B<--no-extents> Normally nbdcopy uses extent metadata to skip over parts of the source disk which contain holes. If you use this flag, nbdcopy ignores extent information and reads everything, which is usually slower. You might use this flag in two situations: the source NBD server has incorrect metadata information; or the source has very slow extent querying so it's faster to simply read all of the data. =item B<-p> =item B<--progress> Display a progress bar. =item B<--progress=>FD Write a progress bar to the file descriptor C (a number) in a format which is easily parsable by other programs. nbdcopy will periodically write the string C<"N/100\n"> (where N is an integer between 0 and 100) to the file descriptor. To get nbdcopy to write the progress bar to a file you can use the following shell commands: exec 3>/tmp/progress nbdcopy --progress=3 ... exec 3>&- =item B<--queue-size=>N Set the maximum number of bytes to queue for in flight requests. The default value is 16 MiB, allowing up to 64 256k requests per NBD connection. If you use larger B<--request-size> you may want to increase this value. =item B<--request-size=>N Set the maximum request size in bytes. The maximum value is 32 MiB, specified by the NBD protocol. =item B<-R> N =item B<--requests=>N Set the maximum number of requests in flight per NBD connection. =item B<-S> N =item B<--sparse=>N Detect all zero blocks of size N (bytes) and make them sparse on the output. You can also turn off sparse detection using S>. The default is 4096 bytes, or the destination preferred block size, whichever is larger. =item B<--synchronous> Force synchronous copying using the L synchronous ("high level") API. This is slow but may be necessary for some broken NBD servers which cannot handle multiple requests in flight. This mode is also used when streaming to and from stdio, pipes and sockets. =item B<-T> N =item B<--threads=>N Use up to N threads for copying. By default this is set to the number of processor cores available. Note I<--threads=0> means autodetect and I<--threads=1> means use a single thread. =item B<-v> =item B<--verbose> Verbose output. This enables debug in libnbd (see L) as well as printing other useful information. =item B<-V> =item B<--version> Display the package name and version and exit. =back =head1 MULTI-CONN, THREADS, REQUESTS IN FLIGHT The three options I<--connections>, I<--threads> and I<--requests> are related and control the amount of parallelism available. The defaults should ensure a reasonable amount of parallelism if possible and you don’t need to adjust them, but this section tries to describe what is going on. Firstly if either side of the copy is streaming to or from stdio, a pipe, or a socket, or if you use the I<--synchronous> option, then nbdcopy works in synchronous mode with no parallelism, and nothing else in this section applies. The I<--connections=N> option controls NBD multi-conn (see L), opening up to N connections to the NBD server (or to both NBD servers if copying between NBD servers). This defaults to 4. The NBD servers must support and advertise multi-conn. For L availability of multi-conn can depend on the plugin. You can use L to find out if a particular NBD server is advertising multi-conn. If the NBD server doesn’t advertise multi-conn then only one connection will be opened regardless of the I<--connections> flag. When copying between two NBD servers, the number of connections is limited to the minimum multi-conn supported on both sides. For the purposes of this calculation, you can consider local files and block devices as supporting infinite multi-conn. When you run an NBD server as a subprocess (using the S> syntax) multi-conn cannot be used. The I<--threads=N> option allows nbdcopy to start up to N threads (defaulting to the number of cores). However nbdcopy cannot use more threads than the number of NBD connections. The I<--requests=N> option controls the maximum number of requests in flight on each NBD connection. This enables the NBD server to process requests in parallel even when multi-conn isn’t available or when using a single thread. The default is chosen to allow a reasonable amount of parallelism without using too much memory. Because of this parallelism, nbdcopy does not read or write blocks in order. If for some reason you require that blocks are copied in strict order then you must use I<--synchronous>. =head1 RUNNING NBD SERVER AS A SUBPROCESS Instead of connecting to an already running server using an NBD URI, you can run an NBD server as a subprocess using: nbdcopy -- [ CMD ARGS ... ] ... This requires the server to support systemd socket activation, which both L and L support (see also L). C<[> and C<]> must be separate command line parameters. You will usually need to use C<--> to stop nbdcopy from misinterpreting NBD server flags as nbdcopy flags. Both the source and destination may be subprocesses. nbdcopy cleans up the subprocess on exit. Some examples follow. =head2 nbdcopy -- [ qemu-nbd -f qcow2 disk.qcow2 ] - | hexdump -C In this example, L is run as a subprocess. The subprocess opens F and exposes it as NBD to nbdcopy. nbdcopy streams this to stdout (C<->) into the pipe which is read by L. (See also L) =head2 nbdcopy -- [ qemu-nbd -f qcow2 disk.qcow2 ] [ nbdkit memory 1G ] Two subprocesses are created, L as the source and L as the destination. The qcow2 file is converted to raw and stored temporarily in the RAM disk (L). When nbdcopy exits both servers are killed and the RAM disk goes away, so this command has no overall effect, but is useful for testing. =head1 SEE ALSO L, L, L, L, L, L, L, L. =head1 AUTHORS Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/copy/test-long-options.sh0000755000175000017500000000217114525371754013444 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdcopy --long-options looks sane. . ../tests/functions.sh set -e set -x output=test-long-options.out cleanup_fn rm -f $output $VG nbdcopy --long-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- --allocated $output grep -- --threads $output grep -- --version $output libnbd-1.20.3/copy/test-short-options.sh0000755000175000017500000000214514525371754013645 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdcopy --short-options looks sane. . ../tests/functions.sh set -e set -x output=test-short-options.out cleanup_fn rm -f $output $VG nbdcopy --short-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- -C $output grep -- -R $output grep -- -V $output libnbd-1.20.3/copy/test-verbose.sh0000755000175000017500000000232214553254537012457 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdcopy -v/--verbose looks sane. . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT memory --version file=test-verbose.out cleanup_fn rm -f $file $VG nbdcopy -v -- [ $NBDKIT memory size=1M ] null: 2>$file cat $file # Check some known strings appear in the output. grep '^nbdcopy: src: nbd_ops' $file grep '^nbdcopy: src: size=1048576 (1M)' $file grep '^nbdcopy: dst: null_ops' $file libnbd-1.20.3/copy/test-version.sh0000755000175000017500000000212414525371754012477 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdcopy --version looks sane. fail=0 output=$($VG nbdcopy --version) if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi if [ "$output" != "nbdcopy $EXPECTED_VERSION libnbd $EXPECTED_VERSION" ]; then echo "$0: unexpected output" fail=1 fi echo "$output" exit $fail libnbd-1.20.3/dump/0000755000175000017500000000000014675532654007556 5libnbd-1.20.3/dump/Makefile.am0000644000175000017500000000354214525371754011532 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ansi-colours.h" #include "minmax.h" #include "rounding.h" #include "version.h" #include "vector.h" DEFINE_VECTOR_TYPE (uint64_vector, uint64_t); static const char *progname; static struct nbd_handle *nbd; bool colour; static uint64_t limit = UINT64_MAX; /* --length (unlimited by default) */ static int64_t size; /* actual size */ static bool can_meta_context; /* did we get extent data? */ /* See do_connect () */ static enum { MODE_URI = 1, MODE_SQUARE_BRACKET } mode; static char **args; /* Read buffer. */ static unsigned char buffer[16*1024*1024]; static void do_connect (void); static void do_dump (void); static void catch_signal (int); static void __attribute__ ((noreturn)) usage (FILE *fp, int exitcode) { fprintf (fp, "\n" "Hexdump the content of a disk over NBD:\n" "\n" " nbddump NBD-URI | [ CMD ARGS ... ]\n" "\n" "Other options:\n" "\n" " nbddump --help\n" " nbddump --version\n" "\n" "Examples:\n" "\n" " nbddump nbd://localhost\n" " nbddump -- [ qemu-nbd -r -f qcow2 file.qcow2 ]\n" "\n" "Please read the nbddump(1) manual page for full usage.\n" "\n" ); exit (exitcode); } int main (int argc, char *argv[]) { enum { HELP_OPTION = CHAR_MAX + 1, LONG_OPTIONS, SHORT_OPTIONS, COLOUR_OPTION, NO_COLOUR_OPTION, }; const char *short_options = "n:V"; const struct option long_options[] = { { "help", no_argument, NULL, HELP_OPTION }, { "long-options", no_argument, NULL, LONG_OPTIONS }, { "short-options", no_argument, NULL, SHORT_OPTIONS }, { "version", no_argument, NULL, 'V' }, { "color", no_argument, NULL, COLOUR_OPTION }, { "colors", no_argument, NULL, COLOUR_OPTION }, { "colour", no_argument, NULL, COLOUR_OPTION }, { "colours", no_argument, NULL, COLOUR_OPTION }, { "no-color", no_argument, NULL, NO_COLOUR_OPTION }, { "no-colors", no_argument, NULL, NO_COLOUR_OPTION }, { "no-colour", no_argument, NULL, NO_COLOUR_OPTION }, { "no-colours", no_argument, NULL, NO_COLOUR_OPTION }, { "length", required_argument, NULL, 'n' }, { "limit", required_argument, NULL, 'n' }, { NULL } }; int c; size_t i; progname = argv[0]; colour = isatty (STDOUT_FILENO); for (;;) { c = getopt_long (argc, argv, short_options, long_options, NULL); if (c == -1) break; switch (c) { case HELP_OPTION: usage (stdout, EXIT_SUCCESS); case LONG_OPTIONS: for (i = 0; long_options[i].name != NULL; ++i) { if (strcmp (long_options[i].name, "long-options") != 0 && strcmp (long_options[i].name, "short-options") != 0) printf ("--%s\n", long_options[i].name); } exit (EXIT_SUCCESS); case SHORT_OPTIONS: for (i = 0; short_options[i]; ++i) { if (short_options[i] != ':' && short_options[i] != '+') printf ("-%c\n", short_options[i]); } exit (EXIT_SUCCESS); case COLOUR_OPTION: colour = true; break; case NO_COLOUR_OPTION: colour = false; break; case 'n': /* XXX Allow human sizes here. */ if (sscanf (optarg, "%" SCNu64, &limit) != 1) { fprintf (stderr, "%s: could not parse --length option: %s\n", progname, optarg); exit (EXIT_FAILURE); } break; case 'V': display_version ("nbddump"); exit (EXIT_SUCCESS); default: usage (stderr, EXIT_FAILURE); } } /* Is it a URI or subprocess? */ if (argc - optind >= 3 && strcmp (argv[optind], "[") == 0 && strcmp (argv[argc-1], "]") == 0) { mode = MODE_SQUARE_BRACKET; argv[argc-1] = NULL; args = &argv[optind+1]; } else if (argc - optind == 1) { mode = MODE_URI; args = &argv[optind]; } else { usage (stderr, EXIT_FAILURE); } /* Open the NBD side. */ nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } nbd_set_uri_allow_local_file (nbd, true); /* Allow ?tls-psk-file. */ nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION); /* Connect to the server. */ do_connect (); can_meta_context = nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION) > 0; /* Get the size. */ size = nbd_get_size (nbd); if (size == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } /* Before dumping, make sure we restore the terminal on ^C etc. */ signal (SIGINT, catch_signal); signal (SIGQUIT, catch_signal); signal (SIGTERM, catch_signal); signal (SIGHUP, catch_signal); /* Dump the content. */ do_dump (); nbd_shutdown (nbd, 0); nbd_close (nbd); exit (EXIT_SUCCESS); } /* Connect the handle to the server. */ static void do_connect (void) { int r; switch (mode) { case MODE_URI: /* NBD-URI */ r = nbd_connect_uri (nbd, args[0]); break; case MODE_SQUARE_BRACKET: /* [ CMD ARGS ... ] */ r = nbd_connect_systemd_socket_activation (nbd, args); break; default: abort (); } if (r == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } } static void catch_signal (int sig) { printf ("\n"); ansi_restore (stdout); fflush (stdout); _exit (EXIT_FAILURE); } /* Read the extent map for the next block and return true if it is all * zeroes. This is conservative and returns false if we did not get * the full extent map from the server, or if the server doesn't * support base:allocation at all. */ static int extent_callback (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { uint64_vector *list = user_data; size_t i; if (strcmp (metacontext, LIBNBD_CONTEXT_BASE_ALLOCATION) != 0) return 0; /* Just append the entries we got to the list. */ for (i = 0; i < nr_entries; ++i) { if (uint64_vector_append (list, entries[i].length) == -1 || uint64_vector_append (list, entries[i].flags) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } } return 0; } static bool test_all_zeroes (uint64_t offset, size_t count) { uint64_vector entries = empty_vector; size_t i; uint64_t count_read; if (!can_meta_context) return false; /* Get the extent map for the block. Note the server doesn't need * to return all requested data here. If it does not then we return * false, causing the main code to do a full read. We could be * smarter and keep asking the server (XXX). */ if (nbd_block_status_64 (nbd, count, offset, (nbd_extent64_callback) { .callback = extent_callback, .user_data = &entries }, 0) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } count_read = 0; for (i = 0; i < entries.len; i += 2) { uint64_t len = entries.ptr[i]; uint64_t type = entries.ptr[i+1]; count_read += len; if (!(type & LIBNBD_STATE_ZERO)) /* not zero */ return false; } /* Did we read at least the whole range wanted? */ if (count_read < count) return false; /* If we got here, we read the whole range and it was all zeroes. */ return true; } /* Hexdump the NBD data. * * XXX In future we could do this all asynch (including writing to * stdout) which could make it very efficient. */ static void do_dump (void) { /* If --no-colour, don't use unicode in the output. */ const char *splat = colour ? "☆" : "*"; const char *pipe = colour ? "│" : "|"; const char *dot = colour ? "·" : "."; uint64_t offset = 0; uint64_t count = size > limit ? limit : size; size_t i, j; char last[16]; bool printed_splat = false, same; while (count) { size_t n = MIN (count, sizeof buffer); if (! test_all_zeroes (offset, n)) { if (nbd_pread (nbd, buffer, n, offset, 0) == -1) { fprintf (stderr, "%s: %s\n", progname, nbd_get_error ()); exit (EXIT_FAILURE); } } else { memset (buffer, 0, n); } /* Make sure a multiple of 16 bytes gets written to the buffer. */ if (n & 15) memset (&buffer[n], 0, 16 - (n & 15)); for (i = 0; i < n; i += 16) { /* Is this line the same as the last line? (Squashing) */ same = offset + i > 0 && /* first line is never squashed */ offset + i + 16 < size && /* last line is never squashed */ memcmp (&buffer[i], last, 16) == 0; if (same) { if (!printed_splat) { printf ("%s\n", splat); printed_splat = true; } continue; } printed_splat = false; memcpy (last, &buffer[i], 16); /* Save the current line. */ /* Print the offset. */ ansi_colour (ANSI_FG_GREEN, stdout); printf ("%010" PRIx64, offset + i); ansi_colour (ANSI_FG_GREY, stdout); printf (": "); /* Print the hex codes. */ for (j = i; j < MIN (i+16, n); ++j) { if (buffer[j]) ansi_colour (ANSI_FG_BRIGHT_BLUE, stdout); else ansi_colour (ANSI_FG_GREY, stdout); printf ("%02x ", buffer[j]); if ((j - i) == 7) printf (" "); } ansi_colour (ANSI_FG_GREY, stdout); for (; j < i+16; ++j) { printf (" "); if ((j - i) == 7) printf (" "); } /* Print the ASCII codes. */ printf ("%s", pipe); for (j = i; j < MIN (i+16, n); ++j) { char c = (char)buffer[j]; if (isalnum (c)) { ansi_colour (ANSI_FG_BRIGHT_RED, stdout); printf ("%c", c); } else if (isprint (c)) { ansi_colour (ANSI_FG_BRIGHT_MAGENTA, stdout); printf ("%c", c); } else { ansi_colour (ANSI_FG_GREY, stdout); printf ("%s", dot); } } ansi_colour (ANSI_FG_GREY, stdout); for (; j < i+16; ++j) printf (" "); printf ("%s\n", pipe); ansi_restore (stdout); } offset += n; count -= n; } } libnbd-1.20.3/dump/dump-data.sh0000755000175000017500000000446314553254574011715 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT data --dump-plugin requires $NBDKIT -U - null --run 'test "$uri" != ""' requires nbdsh -c 'exit(not h.supports_uri())' # This test requires nbdkit >= 1.22. minor=$( $NBDKIT --dump-config | grep ^version_minor | cut -d= -f2 ) requires test $minor -ge 22 output=dump-data.out rm -f $output cleanup_fn rm -f $output $NBDKIT -U - data data=' @32768 1 @65535 "hello, world!" @17825790 "spanning buffer boundary" @20000000 0 ' --run 'nbddump "$uri"' > $output cat $output if [ "$(cat $output)" != '0000000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0000008000: 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 0000008010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 000000fff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 68 |...............h| 0000010000: 65 6c 6c 6f 2c 20 77 6f 72 6c 64 21 00 00 00 00 |ello, world!....| 0000010010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00010ffff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 73 70 |..............sp| 0001100000: 61 6e 6e 69 6e 67 20 62 75 66 66 65 72 20 62 6f |anning buffer bo| 0001100010: 75 6e 64 61 72 79 00 00 00 00 00 00 00 00 00 00 |undary..........| 0001100020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0001312d00: 00 |. |' ]; then echo "$0: unexpected output from nbddump command" exit 1 fi libnbd-1.20.3/dump/dump-empty-qcow2.sh0000755000175000017500000000265514525371754013173 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $QEMU_NBD --version requires qemu-img --version file=dump-empty-qcow2.qcow2 output=dump-empty-qcow2.out rm -f $file $output cleanup_fn rm -f $file $output size=1G # Create a large, empty qcow2 file. qemu-img create -f qcow2 $file $size # Dump it and check the output. nbddump -- [ $QEMU_NBD -r -f qcow2 $file ] > $output cat $output if [ "$(cat $output)" != '0000000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 003ffffff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|' ]; then echo "$0: unexpected output from nbddump command" exit 1 fi libnbd-1.20.3/dump/dump-pattern.sh0000755000175000017500000000532414553254605012451 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires $NBDKIT --version requires $NBDKIT pattern --dump-plugin requires $NBDKIT -U - null --run 'test "$uri" != ""' requires nbdsh -c 'exit(not h.supports_uri())' output=dump-pattern.out rm -f $output cleanup_fn rm -f $output $NBDKIT -U - pattern size=299 --run 'nbddump "$uri"' > $output cat $output if [ "$(cat $output)" != '0000000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 |................| 0000000010: 00 00 00 00 00 00 00 10 00 00 00 00 00 00 00 18 |................| 0000000020: 00 00 00 00 00 00 00 20 00 00 00 00 00 00 00 28 |....... .......(| 0000000030: 00 00 00 00 00 00 00 30 00 00 00 00 00 00 00 38 |.......0.......8| 0000000040: 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00 48 |.......@.......H| 0000000050: 00 00 00 00 00 00 00 50 00 00 00 00 00 00 00 58 |.......P.......X| 0000000060: 00 00 00 00 00 00 00 60 00 00 00 00 00 00 00 68 |.......`.......h| 0000000070: 00 00 00 00 00 00 00 70 00 00 00 00 00 00 00 78 |.......p.......x| 0000000080: 00 00 00 00 00 00 00 80 00 00 00 00 00 00 00 88 |................| 0000000090: 00 00 00 00 00 00 00 90 00 00 00 00 00 00 00 98 |................| 00000000a0: 00 00 00 00 00 00 00 a0 00 00 00 00 00 00 00 a8 |................| 00000000b0: 00 00 00 00 00 00 00 b0 00 00 00 00 00 00 00 b8 |................| 00000000c0: 00 00 00 00 00 00 00 c0 00 00 00 00 00 00 00 c8 |................| 00000000d0: 00 00 00 00 00 00 00 d0 00 00 00 00 00 00 00 d8 |................| 00000000e0: 00 00 00 00 00 00 00 e0 00 00 00 00 00 00 00 e8 |................| 00000000f0: 00 00 00 00 00 00 00 f0 00 00 00 00 00 00 00 f8 |................| 0000000100: 00 00 00 00 00 00 01 00 00 00 00 00 00 00 01 08 |................| 0000000110: 00 00 00 00 00 00 01 10 00 00 00 00 00 00 01 18 |................| 0000000120: 00 00 00 00 00 00 01 20 00 00 00 |....... ... |' ]; then echo "$0: unexpected output from nbddump command" exit 1 fi libnbd-1.20.3/dump/nbddump.pod0000644000175000017500000000617714525371754011642 =head1 NAME nbddump - hexdump the content of a disk over NBD =head1 SYNOPSIS nbddump NBD C is an NBD URI or subprocess: NBD := nbd://... | nbd+unix:// (or other URI formats) | [ CMD ARGS ... ] =for paragraph nbddump --help =for paragraph nbddump --version =head1 DESCRIPTION nbddump prints the content of a disk from an NBD server using the usual hexdump format: $ nbddump nbd://localhost 0000: 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │················│ 0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │················│ ☆ 0100: 68 65 6c 6c 6f 2c 20 77 6f 72 6c 64 21 00 00 00 │hello, world!···│ 0110: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │················│ ☆ 1000: 00 00 00 21 │···! │ =head2 Output format The first field (before the C<:>) is the offset within the file, in hexadecimal. The second field shows the hex codes of bytes read from the file. The third field shows the ASCII equivalent characters (if printable). A splat character (C<☆>) indicates lines of repeated output which have been squashed. (Note this is not just for lines of zero bytes, but any case where the next line shown would be the same as the previous line.) =head2 Subprocess nbddump can also run an NBD server as a subprocess. This requires an NBD server which understands systemd socket activation, such as L or L. For example, to dump out a qcow2 file as raw data: $ nbddump -- [ qemu-nbd -r -f qcow2 file.qcow2 ] To dump out an empty floppy disk created by L: $ mkdir /var/tmp/empty $ nbddump -- [ nbdkit floppy /var/tmp/empty ] 0000: 00 00 00 4d 53 57 49 4e 34 2e 31 00 00 00 00 00 |...MSWIN4.1.....| 0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| ☆ 01b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fe |................| 01c0: ff ff 0c fe ff ff 00 08 00 00 80 00 00 00 00 00 |................| To dump out some test data using L: $ nbddump -- [ nbdkit data ' @0x1000 "hello!" ' ] 0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │················│ ☆ 1000: 68 65 6c 6c 6f 21 │hello! │ Note that S> are separate parameters, and must be surrounded by spaces. C<--> separates nbddump parameters from subprocess parameters. =head1 OPTIONS =over 4 =item B<--help> Display brief command line help and exit. =item B<--color> =item B<--colour> =item B<--no-color> =item B<--no-colour> Enable or disable ANSI colours in output. By default we use colours if the output seems to be a terminal, and disable them if not. =item B<--length=>N =item B<-n> N Dump up to I bytes and then stop. =item B<-V> =item B<--version> Display the package name and version and exit. =back =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/dump/test-long-options.sh0000755000175000017500000000213414525371754013436 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbddump --long-options looks sane. . ../tests/functions.sh set -e set -x output=test-long-options.out cleanup_fn rm -f $output $VG nbddump --long-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- --length $output grep -- --version $output libnbd-1.20.3/dump/test-short-options.sh0000755000175000017500000000212214525371754013633 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbddump --short-options looks sane. . ../tests/functions.sh set -e set -x output=test-short-options.out cleanup_fn rm -f $output $VG nbddump --short-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- -n $output grep -- -V $output libnbd-1.20.3/dump/test-version.sh0000755000175000017500000000212414525371754012472 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbddump --version looks sane. fail=0 output=$($VG nbddump --version) if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi if [ "$output" != "nbddump $EXPECTED_VERSION libnbd $EXPECTED_VERSION" ]; then echo "$0: unexpected output" fail=1 fi echo "$output" exit $fail libnbd-1.20.3/fuse/0000755000175000017500000000000014675532654007553 5libnbd-1.20.3/fuse/Makefile.am0000644000175000017500000000433514525371754011530 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* FUSE support. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "version.h" #include "nbdfuse.h" handles nbd = empty_vector; unsigned connections = 4; bool readonly; bool file_mode = false; struct timespec start_t; char *filename; uint64_t size; bool verbose = false; static char *mountpoint; static const char *pidfile; static char *fuse_options; static struct fuse *fuse; static struct fuse_session *fuse_session; enum mode { MODE_URI, /* URI */ MODE_COMMAND, /* --command */ MODE_FD, /* --fd */ MODE_SQUARE_BRACKET, /* [ CMD ], same as --socket-activation*/ MODE_SOCKET_ACTIVATION, /* --socket-activation */ MODE_TCP, /* --tcp */ MODE_UNIX, /* --unix */ MODE_VSOCK, /* --vsock */ }; static void __attribute__ ((noreturn)) usage (FILE *fp, int exitcode) { fprintf (fp, "\n" "Mount NBD server as a virtual file:\n" "\n" #ifdef HAVE_LIBXML2 " nbdfuse [-C N|--connections N] [-d] [-o FUSE-OPTION] [-P PIDFILE]\n" " [-r] [-s] [-v]\n" " MOUNTPOINT[/FILENAME] URI\n" "\n" "Other modes:\n" "\n" #endif " nbdfuse MOUNTPOINT[/FILENAME] [ CMD [ARGS ...] ]\n" " nbdfuse MOUNTPOINT[/FILENAME] --command CMD [ARGS ...]\n" " nbdfuse MOUNTPOINT[/FILENAME] --fd N\n" " nbdfuse MOUNTPOINT[/FILENAME] --tcp HOST PORT\n" " nbdfuse MOUNTPOINT[/FILENAME] --unix SOCKET\n" " nbdfuse MOUNTPOINT[/FILENAME] --vsock CID PORT\n" "\n" "To unmount:\n" "\n" " fusermount3 -u MOUNTPOINT\n" "\n" "Other options:\n" "\n" " nbdfuse --help\n" " nbdfuse --fuse-help\n" " nbdfuse -V|--version\n" "\n" "Please read the nbdfuse(1) manual page for full usage.\n" "\n" ); exit (exitcode); } static void fuse_help (const char *prog) { static struct fuse_operations null_operations; const char *tmp_argv[] = { prog, "--help", NULL }; fuse_main (2, (char **)tmp_argv, &null_operations, NULL); exit (EXIT_SUCCESS); } static bool is_directory (const char *path) { struct stat statbuf; if (stat (path, &statbuf) == -1) return false; return S_ISDIR (statbuf.st_mode); } static bool is_regular_file (const char *path) { struct stat statbuf; if (stat (path, &statbuf) == -1) return false; return S_ISREG (statbuf.st_mode); } /* Which modes support multi-conn? We cannot connect multiple times * to subprocesses (since we'd have to launch multiple subprocesses). */ static bool mode_is_multi_conn_compatible (enum mode mode) { switch (mode) { case MODE_COMMAND: case MODE_SQUARE_BRACKET: case MODE_SOCKET_ACTIVATION: case MODE_FD: return false; case MODE_URI: case MODE_TCP: case MODE_UNIX: case MODE_VSOCK: return true; default: abort (); } } static struct nbd_handle *create_and_connect (enum mode mode, int argc, char **argv); int main (int argc, char *argv[]) { enum mode mode = MODE_URI; enum { HELP_OPTION = CHAR_MAX + 1, FUSE_HELP_OPTION, LONG_OPTIONS, SHORT_OPTIONS, }; /* Note the "+" means we stop processing as soon as we get to the * first non-option argument (the mountpoint) and then we parse the * rest of the command line without getopt. */ const char *short_options = "+C:do:P:rsvV"; const struct option long_options[] = { { "fuse-help", no_argument, NULL, FUSE_HELP_OPTION }, { "help", no_argument, NULL, HELP_OPTION }, { "long-options", no_argument, NULL, LONG_OPTIONS }, { "connections", required_argument, NULL, 'C' }, { "pidfile", required_argument, NULL, 'P' }, { "pid-file", required_argument, NULL, 'P' }, { "readonly", no_argument, NULL, 'r' }, { "read-only", no_argument, NULL, 'r' }, { "short-options", no_argument, NULL, SHORT_OPTIONS }, { "verbose", no_argument, NULL, 'v' }, { "version", no_argument, NULL, 'V' }, { NULL } }; int c, r; size_t i; bool singlethread = false; struct nbd_handle *h; int64_t ssize; const char *s; struct fuse_args fuse_args = FUSE_ARGS_INIT (0, NULL); struct fuse_loop_config fuse_loop_config; FILE *fp; for (;;) { c = getopt_long (argc, argv, short_options, long_options, NULL); if (c == -1) break; switch (c) { case HELP_OPTION: usage (stdout, EXIT_SUCCESS); case FUSE_HELP_OPTION: fuse_help (argv[0]); exit (EXIT_SUCCESS); case LONG_OPTIONS: for (i = 0; long_options[i].name != NULL; ++i) { if (strcmp (long_options[i].name, "long-options") != 0 && strcmp (long_options[i].name, "short-options") != 0) printf ("--%s\n", long_options[i].name); } exit (EXIT_SUCCESS); case SHORT_OPTIONS: for (i = 0; short_options[i]; ++i) { if (short_options[i] != ':' && short_options[i] != '+') printf ("-%c\n", short_options[i]); } exit (EXIT_SUCCESS); case 'C': if (sscanf (optarg, "%u", &connections) != 1 || connections < 1 || connections > 1024) { fprintf (stderr, "%s: --connections option-argument must be an " "unsigned integer >= 1\n", argv[0]); exit (EXIT_FAILURE); } break; case 'o': fuse_opt_add_opt_escaped (&fuse_options, optarg); break; case 'P': pidfile = optarg; break; case 'r': readonly = true; break; case 's': singlethread = true; break; case 'v': case 'd': verbose = true; break; case 'V': display_version ("nbdfuse"); exit (EXIT_SUCCESS); default: usage (stderr, EXIT_FAILURE); } } /* There must be at least 2 parameters (mountpoint and * URI/--command/etc). */ if (argc - optind < 2) usage (stderr, EXIT_FAILURE); /* Parse and check the mountpoint. It might be MOUNTPOINT (file), * MOUNTPOINT (directory), or MOUNTPOINT/FILENAME. */ s = argv[optind++]; if (is_regular_file (s)) { /* MOUNTPOINT (file) */ const char *p; file_mode = true; mountpoint = strdup (s); if (mountpoint == NULL) { strdup_error: perror ("strdup"); exit (EXIT_FAILURE); } p = strrchr (s, '/'); if (!p) filename = strdup (s); else { if (strlen (p+1) == 0) goto mp_error; /* probably can't happen */ filename = strdup (p+1); } if (!filename) goto strdup_error; } else if (is_directory (s)) { /* MOUNTPOINT/nbd */ mountpoint = strdup (s); filename = strdup ("nbd"); if (mountpoint == NULL || filename == NULL) goto strdup_error; } else { /* MOUNTPOINT/FILENAME */ const char *p = strrchr (s, '/'); if (p == NULL) { mp_error: fprintf (stderr, "%s: %s: " "mountpoint must be \"directory\" or \"directory/filename\"\n", argv[0], s); exit (EXIT_FAILURE); } mountpoint = strndup (s, p-s); if (mountpoint == NULL) goto strdup_error; if (! is_directory (mountpoint)) goto mp_error; if (strlen (p+1) == 0) goto mp_error; filename = strdup (p+1); if (filename == NULL) goto strdup_error; } /* The next parameter is either a URI or a mode switch. */ if (strcmp (argv[optind], "--command") == 0 || strcmp (argv[optind], "--cmd") == 0) { mode = MODE_COMMAND; optind++; } else if (strcmp (argv[optind], "[") == 0) { mode = MODE_SQUARE_BRACKET; optind++; } else if (strcmp (argv[optind], "--socket-activation") == 0 || strcmp (argv[optind], "--systemd-socket-activation") == 0) { mode = MODE_SOCKET_ACTIVATION; optind++; } else if (strcmp (argv[optind], "--fd") == 0) { mode = MODE_FD; optind++; } else if (strcmp (argv[optind], "--tcp") == 0) { mode = MODE_TCP; optind++; } else if (strcmp (argv[optind], "--unix") == 0) { mode = MODE_UNIX; optind++; } else if (strcmp (argv[optind], "--vsock") == 0) { mode = MODE_VSOCK; optind++; } /* This is undocumented, but allow either URI or --uri URI. */ else if (strcmp (argv[optind], "--uri") == 0) { mode = MODE_URI; optind++; } else if (argv[optind][0] == '-') { fprintf (stderr, "%s: unknown mode: %s\n", argv[0], argv[optind]); usage (stderr, EXIT_FAILURE); } #ifndef HAVE_LIBXML2 if (mode == MODE_URI) { fprintf (stderr, "%s: URIs are not supported in this build of libnbd\n", argv[0]); exit (EXIT_FAILURE); } #endif /* Check there are enough parameters following given the mode. */ switch (mode) { case MODE_URI: case MODE_FD: case MODE_UNIX: if (argc - optind != 1) usage (stderr, EXIT_FAILURE); break; case MODE_TCP: case MODE_VSOCK: if (argc - optind != 2) usage (stderr, EXIT_FAILURE); break; case MODE_COMMAND: case MODE_SOCKET_ACTIVATION: if (argc - optind < 1) usage (stderr, EXIT_FAILURE); break; case MODE_SQUARE_BRACKET: if (argc - optind < 2 || strcmp (argv[argc-1], "]") != 0) usage (stderr, EXIT_FAILURE); break; } /* At this point we know the command line is valid, and so can start * opening FUSE and libnbd. */ /* Create the libnbd handle and connect to it. */ h = create_and_connect (mode, argc, argv); if (handles_append (&nbd, h) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } /* If the server supports multi-conn, and we are able to, try to * open more handles. */ if (connections > 1 && mode_is_multi_conn_compatible (mode) && nbd_can_multi_conn (nbd.ptr[0]) >= 1) { if (handles_reserve_exactly (&nbd, connections-1) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } for (i = 2; i <= connections; ++i) { h = create_and_connect (mode, argc, argv); handles_append (&nbd, h); /* reserved above, so can't fail */ } } connections = nbd.len; if (verbose) fprintf (stderr, "nbdfuse: connections=%u\n", connections); ssize = nbd_get_size (nbd.ptr[0]); if (ssize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } size = ssize; /* If the remote NBD server is readonly, then act as if the '-r' * flag was given on the nbdfuse command line. */ if (nbd_is_read_only (nbd.ptr[0]) > 0) readonly = true; /* Create the background threads which are used to dispatch NBD * operations. */ start_operations_threads (); /* This is just used to give an unchanging time when they stat in * the mountpoint. */ clock_gettime (CLOCK_REALTIME, &start_t); /* Create the FUSE args. */ if (fuse_opt_add_arg (&fuse_args, argv[0]) == -1) { fuse_opt_error: perror ("fuse_opt_add_arg"); exit (EXIT_FAILURE); } if (fuse_options) { if (fuse_opt_add_arg (&fuse_args, "-o") == -1 || fuse_opt_add_arg (&fuse_args, fuse_options) == -1) goto fuse_opt_error; } /* Create the FUSE mountpoint. */ fuse = fuse_new (&fuse_args, &nbdfuse_operations, sizeof nbdfuse_operations, NULL); if (!fuse) { perror ("fuse_new"); exit (EXIT_FAILURE); } fuse_opt_free_args (&fuse_args); fuse_session = fuse_get_session (fuse); fuse_set_signal_handlers (fuse_session); /* After successful fuse_mount we must be careful not to call * exit(2) in this program until we have unmounted the filesystem * below. */ if (fuse_mount (fuse, mountpoint) == -1) { perror ("fuse_mount"); exit (EXIT_FAILURE); } /* Ready to serve, write pidfile. */ if (pidfile) { fp = fopen (pidfile, "w"); if (fp) { fprintf (fp, "%ld", (long)getpid ()); fclose (fp); } } /* Enter the main loop. */ if (!singlethread) { memset (&fuse_loop_config, 0, sizeof fuse_loop_config); fuse_loop_config.clone_fd = 0; fuse_loop_config.max_idle_threads = 10; r = fuse_loop_mt (fuse, &fuse_loop_config); } else { r = fuse_loop (fuse); } if (r < 0) { errno = -r; perror ("fuse_loop"); } else if (r > 0) { fprintf (stderr, "%s: fuse_loop: fuse loop terminated by signal %d\n", argv[0], r); } /* Close FUSE. */ fuse_remove_signal_handlers (fuse_session); fuse_unmount (fuse); fuse_destroy (fuse); /* Close NBD handle(s). */ for (i = 0; i < nbd.len; ++i) nbd_close (nbd.ptr[i]); free (mountpoint); free (filename); free (fuse_options); exit (r == 0 ? EXIT_SUCCESS : EXIT_FAILURE); } /* Called from main() above to create an NBD handle and connect to it. * For multi-conn, this may be called several times. */ static struct nbd_handle * create_and_connect (enum mode mode, int argc, char **argv) { int fd; uint32_t cid, port; struct nbd_handle *h; /* Create the libnbd handle. */ h = nbd_create (); if (h == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_set_debug (h, verbose); /* Allow ?tls-psk-file and ?tls-certificates */ nbd_set_uri_allow_local_file (h, true); /* Connect to the NBD server synchronously. */ switch (mode) { case MODE_URI: if (nbd_connect_uri (h, argv[optind]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_COMMAND: if (nbd_connect_command (h, &argv[optind]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_SQUARE_BRACKET: /* This is the same as MODE_SOCKET_ACTIVATION but we must eat the * closing square bracket on the command line. */ assert (strcmp (argv[argc-1], "]") == 0); /* checked above */ argv[argc-1] = NULL; /*FALLTHROUGH*/ case MODE_SOCKET_ACTIVATION: if (nbd_connect_systemd_socket_activation (h, &argv[optind]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_FD: if (sscanf (argv[optind], "%d", &fd) != 1) { fprintf (stderr, "%s: could not parse file descriptor: %s\n\n", argv[0], argv[optind]); exit (EXIT_FAILURE); } if (nbd_connect_socket (h, fd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_TCP: if (nbd_connect_tcp (h, argv[optind], argv[optind+1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_UNIX: if (nbd_connect_unix (h, argv[optind]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_VSOCK: if (sscanf (argv[optind], "%" SCNu32, &cid) != 1) { fprintf (stderr, "%s: could not parse vsock cid: %s\n\n", argv[0], argv[optind]); exit (EXIT_FAILURE); } if (sscanf (argv[optind+1], "%" SCNu32, &port) != 1) { fprintf (stderr, "%s: could not parse vsock port: %s\n\n", argv[0], argv[optind]); exit (EXIT_FAILURE); } if (nbd_connect_vsock (h, cid, port) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; } return h; } libnbd-1.20.3/fuse/nbdfuse.h0000644000175000017500000000271514616437241011266 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_NBDFUSE_H #define LIBNBD_NBDFUSE_H #include #include #include /* Define fuse API version and include the header file in one place so * we can be sure to get the same API in all source files. */ #define FUSE_USE_VERSION 35 #include #include "vector.h" DEFINE_VECTOR_TYPE (handles, struct nbd_handle *); extern handles nbd; extern unsigned connections; extern bool readonly; extern bool file_mode; extern struct timespec start_t; extern char *filename; extern uint64_t size; extern bool verbose; extern struct fuse_operations nbdfuse_operations; extern void start_operations_threads (void); #endif /* LIBNBD_NBDFUSE_H */ libnbd-1.20.3/fuse/operations.c0000644000175000017500000003601114525371754012017 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* FUSE operations invoked by the kernel. * * Note these may be called in parallel from multiple threads, so any * shared state needs to be read-only or else protected by mutexes. * libnbd calls are OK. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_STDATOMIC_H #include #else /* Rely on ints being atomic enough on the platform. */ #define _Atomic /**/ #endif #include #include "nbdfuse.h" #include "minmax.h" #define MAX_REQUEST_SIZE (32 * 1024 * 1024) /* Number of seconds to wait for commands to complete when closing the file. */ #define RELEASE_TIMEOUT 5 #define DEBUG_OPERATION(name, fs, ...) \ do { \ if (verbose) \ fprintf (stderr, "nbdfuse: %s: " fs "\n", name, ##__VA_ARGS__); \ } while (0) /* NOTES ON THE THREAD MODEL * * Once nbdfuse is up and running there will be some number of FUSE * threads (controlled by fuse itself, see -o max_idle_threads) and a * static number of operations background threads. Under load there * should be more FUSE threads than operations threads -- things work * more efficiently when this is the case. * * The NBD commands are initiated by the FUSE threads (eg. by calling * functions like nbd_aio_pread). The FUSE thread then calls * wait_for_completion() which blocks the FUSE thread waiting for the * command to retire. * * Commands are distributed to operations threads (currently round- * robin, but we could be smarter about this). * * An operation thread handles a single NBD connection but possibly * multiple commands in flight. It is a loop which waits on a * condition for at least one command to be in flight, then loops * calling nbd_poll while there are commands in flight, then goes back * to waiting on the condition. */ static void *operations_thread (void *); static struct thread { size_t n; pthread_t thread; /* This counts the number of commands in flight. The condition is * used to allow the operations thread to process commands when * in_flight goes from 0 -> 1. This is roughly equivalent to * nbd_aio_in_flight, but we need to count it ourselves in order to * use the condition. */ _Atomic size_t in_flight; pthread_mutex_t in_flight_mutex; pthread_cond_t in_flight_cond; } *threads; static pthread_barrier_t barrier; void start_operations_threads (void) { size_t i; int err; /* This barrier is used to ensure all operations threads have * started up before we leave this function. */ err = pthread_barrier_init (&barrier, NULL, nbd.len + 1); if (err != 0) { errno = err; perror ("nbdfuse: pthread_barrier_init"); exit (EXIT_FAILURE); } threads = calloc (nbd.len, sizeof (struct thread)); if (threads == NULL) { perror ("calloc"); exit (EXIT_FAILURE); } for (i = 0; i < nbd.len; ++i) { threads[i].n = i; threads[i].in_flight = 0; if ((err = pthread_mutex_init (&threads[i].in_flight_mutex, NULL)) != 0 || (err = pthread_cond_init (&threads[i].in_flight_cond, NULL)) != 0) { errno = err; perror ("nbdfuse: mutex/cond init"); exit (EXIT_FAILURE); } err = pthread_create (&threads[i].thread, NULL, operations_thread, &threads[i]); if (err != 0) { errno = err; perror ("nbdfuse: pthread_create"); exit (EXIT_FAILURE); } } /* Wait on the barrier. */ pthread_barrier_wait (&barrier); pthread_barrier_destroy (&barrier); } struct completion { pthread_mutex_t mutex; pthread_cond_t cond; bool completed; struct thread *thread; } completion; static void * operations_thread (void *arg) { struct thread *thread = arg; size_t n = thread->n; struct nbd_handle *h = nbd.ptr[n]; /* Signal to the main thread that we have initialized. */ pthread_barrier_wait (&barrier); while (1) { /* Sleep until at least one command is in flight. */ pthread_mutex_lock (&thread->in_flight_mutex); while (thread->in_flight == 0) pthread_cond_wait (&thread->in_flight_cond, &thread->in_flight_mutex); pthread_mutex_unlock (&thread->in_flight_mutex); /* Dispatch work while there are commands in flight. */ while (thread->in_flight > 0) { if (nbd_poll (h, -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } } /*NOTREACHED*/ return NULL; } /* Completion callback - called from the operations thread when a * command completes. */ static int completion_callback (void *vp, int *error) { struct completion *completion = vp; pthread_mutex_lock (&completion->mutex); /* Mark the command as completed. */ completion->completed = true; pthread_cond_signal (&completion->cond); /* We have to decrement this here so that the caller (the operations * thread) does not reenter nbd_poll. */ assert (completion->thread->in_flight >= 1); completion->thread->in_flight--; pthread_mutex_unlock (&completion->mutex); /* Don't retire the command. We want to get the error indication in * the FUSE thread. */ return 0; } /* Report an NBD error and return -errno. */ static int report_nbd_error (void) { int err; fprintf (stderr, "%s\n", nbd_get_error ()); err = nbd_get_errno (); if (err != 0) return -err; else return -EIO; } /* Round-robin assignment of commands to operation threads (and * therefore to NBD handle "owned" by that thread). */ static size_t next_thread (void) { static _Atomic size_t n = 0; if (nbd.len == 1) return 0; else { size_t i = n++; return i % (nbd.len - 1); } } static int wait_for_completion (size_t index, struct completion *completion, int64_t cookie) { int r; /* Signal to the operations thread to start work, in case it is sleeping. */ pthread_mutex_lock (&threads[index].in_flight_mutex); threads[index].in_flight++; pthread_cond_signal (&threads[index].in_flight_cond); pthread_mutex_unlock (&threads[index].in_flight_mutex); /* Wait until the completion_callback sets the completed flag. * * We cannot call nbd_aio_command_completed yet because that can * lead to a possible deadlock where completion_callback holds the * NBD handle lock and we try to acquire it by calling * nbd_aio_command_completed. That is the reason for the * completion.completed flag. */ pthread_mutex_lock (&completion->mutex); while (!completion->completed) pthread_cond_wait (&completion->cond, &completion->mutex); pthread_mutex_unlock (&completion->mutex); /* nbd_aio_command_completed returns: * 0 => command still in flight (should be impossible) * 1 => completed successfully * -1 => error */ r = nbd_aio_command_completed (nbd.ptr[index], cookie); assert (r != 0); return r; } /* Wrap calls to any asynch command and check the error. */ #define CHECK_NBD_ASYNC_ERROR(CALL) \ do { \ size_t index = next_thread (); \ struct completion completion = \ { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, \ false, &threads[index] }; \ nbd_completion_callback cb = \ { .callback = completion_callback, .user_data = &completion }; \ struct nbd_handle *h = nbd.ptr[index]; \ int64_t cookie = (CALL); \ if (cookie == -1 || \ wait_for_completion (index, &completion, cookie) == -1) \ return report_nbd_error (); \ } while (0) /* Wraps calls to sync libnbd functions and check the error. */ //#define CHECK_NBD_SYNC_ERROR(CALL) // do { if ((CALL) == -1) return report_nbd_error (); } while (0) static int nbdfuse_getattr (const char *path, struct stat *statbuf, struct fuse_file_info *fi) { const int mode = readonly ? 0444 : 0666; DEBUG_OPERATION ("getattr", "path=%s", path); memset (statbuf, 0, sizeof *statbuf); /* We're probably making some Linux-specific assumptions here, but * this file is not usually compiled on non-Linux systems (perhaps * on OpenBSD?). XXX */ statbuf->st_atim = start_t; statbuf->st_mtim = start_t; statbuf->st_ctim = start_t; statbuf->st_uid = geteuid (); statbuf->st_gid = getegid (); if (file_mode || (path[0] == '/' && strcmp (path+1, filename) == 0)) { /* getattr "/filename" */ statbuf->st_mode = S_IFREG | mode; statbuf->st_nlink = 1; statbuf->st_size = size; } else if (strcmp (path, "/") == 0) { /* getattr "/" */ statbuf->st_mode = S_IFDIR | (mode & 0111); statbuf->st_nlink = 2; } else return -ENOENT; return 0; } static int nbdfuse_readdir (const char *path, void *buf, fuse_fill_dir_t filler, off_t offset, struct fuse_file_info *fi, enum fuse_readdir_flags flags) { DEBUG_OPERATION ("readdir", "path=%s", path); if (strcmp (path, "/") != 0) return -ENOENT; filler (buf, ".", NULL, 0, 0); filler (buf, "..", NULL, 0, 0); filler (buf, filename, NULL, 0, 0); return 0; } /* This function checks the O_RDONLY/O_RDWR flags passed to the * open(2) call, so we have to check the open mode is compatible with * the readonly flag. */ static int nbdfuse_open (const char *path, struct fuse_file_info *fi) { DEBUG_OPERATION ("open", "path=%s, flags=%d", path, fi->flags); if (!file_mode && (path[0] != '/' || strcmp (path+1, filename) != 0)) return -ENOENT; if (readonly && (fi->flags & O_ACCMODE) != O_RDONLY) return -EACCES; return 0; } static int nbdfuse_read (const char *path, char *buf, size_t count, off_t offset, struct fuse_file_info *fi) { DEBUG_OPERATION ("read", "path=%s, buf=%p, count=%zu, offset=%" PRIi64, path, buf, count, (int64_t)offset); if (!file_mode && (path[0] != '/' || strcmp (path+1, filename) != 0)) return -ENOENT; if (offset >= size) return 0; if (count > MAX_REQUEST_SIZE) count = MAX_REQUEST_SIZE; if (offset + count > size) count = size - offset; CHECK_NBD_ASYNC_ERROR (nbd_aio_pread (h, buf, count, offset, cb, 0)); return count; } static int nbdfuse_write (const char *path, const char *buf, size_t count, off_t offset, struct fuse_file_info *fi) { DEBUG_OPERATION ("write", "path=%s, buf=%p, count=%zu, offset=%" PRIi64, path, buf, count, (int64_t)offset); /* Probably shouldn't happen because of nbdfuse_open check. */ if (readonly) return -EACCES; if (!file_mode && (path[0] != '/' || strcmp (path+1, filename) != 0)) return -ENOENT; if (offset >= size) return 0; if (count > MAX_REQUEST_SIZE) count = MAX_REQUEST_SIZE; if (offset + count > size) count = size - offset; CHECK_NBD_ASYNC_ERROR (nbd_aio_pwrite (h, buf, count, offset, cb, 0)); return (int)count; } static int nbdfuse_fsync (const char *path, int datasync, struct fuse_file_info *fi) { DEBUG_OPERATION ("fsync", "path=%s, datasync=%d", path, datasync); if (readonly) return 0; /* If the server doesn't support flush then the operation is * silently ignored. */ if (nbd_can_flush (nbd.ptr[0])) CHECK_NBD_ASYNC_ERROR (nbd_aio_flush (h, cb, 0)); return 0; } #ifndef FALLOC_FL_PUNCH_HOLE # define FALLOC_FL_PUNCH_HOLE 0 #endif #ifndef FALLOC_FL_ZERO_RANGE # define FALLOC_FL_ZERO_RANGE 0 #endif /* Punch a hole or write zeros. */ static int nbdfuse_fallocate (const char *path, int mode, off_t offset, off_t len, struct fuse_file_info *fi) { DEBUG_OPERATION ("fallocate", "path=%s, mode=%d, " "offset=%" PRIi64 ", len=%" PRIi64, path, mode, (int64_t)offset, (int64_t)len); if (readonly) return -EACCES; if (mode & FALLOC_FL_PUNCH_HOLE) { if (!nbd_can_trim (nbd.ptr[0])) return -EOPNOTSUPP; /* Trim not supported. */ else { CHECK_NBD_ASYNC_ERROR (nbd_aio_trim (h, len, offset, cb, 0)); return 0; } } /* As of FUSE 35 this is not supported by the kernel module and it * always returns EOPNOTSUPP. */ else if (mode & FALLOC_FL_ZERO_RANGE) { /* If the backend doesn't support writing zeroes then we can * emulate it. */ if (!nbd_can_zero (nbd.ptr[0])) { static char zerobuf[4096]; while (len > 0) { off_t n = MIN (len, sizeof zerobuf); CHECK_NBD_ASYNC_ERROR (nbd_aio_pwrite (h, zerobuf, n, offset, cb, 0)); len -= n; } return 0; } else { CHECK_NBD_ASYNC_ERROR (nbd_aio_zero (h, len, offset, cb, 0)); return 0; } } else return -EOPNOTSUPP; } /* This is called when the filesystem is unmounted. */ static void nbdfuse_destroy (void *data) { time_t st; size_t i; DEBUG_OPERATION ("destroy", "(no parameters)"); /* Wait until there are no more commands in flight or until a * timeout is reached. */ time (&st); while (time (NULL) - st <= RELEASE_TIMEOUT) { for (i = 0; i < nbd.len; ++i) { if (threads[i].in_flight > 0) break; } if (i == nbd.len) /* no commands in flight */ break; /* Signal to the operations thread to work. */ for (i = 0; i < nbd.len; ++i) { pthread_mutex_lock (&threads[i].in_flight_mutex); pthread_cond_signal (&threads[i].in_flight_cond); pthread_mutex_unlock (&threads[i].in_flight_mutex); } sleep (1); } } struct fuse_operations nbdfuse_operations = { .getattr = nbdfuse_getattr, .readdir = nbdfuse_readdir, .open = nbdfuse_open, .read = nbdfuse_read, .write = nbdfuse_write, .fsync = nbdfuse_fsync, .fallocate = nbdfuse_fallocate, .destroy = nbdfuse_destroy, }; libnbd-1.20.3/fuse/nbdfuse.pod0000644000175000017500000002641014525371754011624 =head1 NAME nbdfuse - mount a network block device in the local filesystem =head1 SYNOPSIS nbdfuse [-C N|--connections N] [-d] [-o FUSE-OPTION] [-P PIDFILE] [-r] [-s] [-v|--verbose] MOUNTPOINT[/FILENAME] URI =for paragraph nbdfuse MOUNTPOINT[/FILENAME] [ CMD [ARGS ...] ] =for paragraph nbdfuse MOUNTPOINT[/FILENAME] --command CMD [ARGS ...] =for paragraph nbdfuse MOUNTPOINT[/FILENAME] --fd N =for paragraph nbdfuse MOUNTPOINT[/FILENAME] --tcp HOST PORT =for paragraph nbdfuse MOUNTPOINT[/FILENAME] --unix SOCKET =for paragraph nbdfuse MOUNTPOINT[/FILENAME] --vsock CID PORT To unmount: fusermount3 -u MOUNTPOINT Other options: nbdfuse --help =for paragraph nbdfuse --fuse-help =for paragraph nbdfuse -V|--version =head1 DESCRIPTION nbdfuse is used to mount a Network Block Device (NBD) in the local filesystem. The NBD virtual file is mounted at F (defaulting to F). Reads and writes to the virtual file are turned into reads and writes to the NBD device. In nbdfuse E 1.6 you can also create a "naked" mountpoint by mounting over any regular file called F (the existing contents of the file do not matter). The NBD server itself can be local or remote. The server can be specified as an NBD URI (like C), or as an NBD server running as a subprocess of nbdfuse (using S>), or in various other ways (see L). Use C to unmount the filesystem after you have used it. =head1 EXAMPLES =head2 Present a remote NBD server as a local file If there is a remote NBD server running on C at the default NBD port number (10809) then you can turn it into a local file by doing: $ mkdir dir $ nbdfuse dir nbd://example.com & $ ls -l dir/ total 0 -rw-rw-rw-. 1 nbd nbd 1073741824 Jan 1 10:10 nbd The file is called F and you can read and write to it as if it is a normal file. Note that writes to the file will write to the remote NBD server. After using it, unmount it: $ fusermount3 -u dir $ rmdir dir =head2 Use nbdkit to create a file backed by a temporary RAM disk Using S> you can run an NBD server as a subprocess. In this example L is used to create a temporary file backed by a RAM disk: $ mkdir dir $ nbdfuse dir/ramdisk [ nbdkit --exit-with-parent memory 1G ] & $ ls -l dir/ total 0 -rw-rw-rw-. 1 nbd nbd 1073741824 Jan 1 10:10 ramdisk $ dd if=/dev/urandom bs=1M count=100 of=mp/ramdisk conv=notrunc,nocreat 100+0 records in 100+0 records out 104857600 bytes (105 MB, 100 MiB) copied, 2.08319 s, 50.3 MB/s When you have finished with the RAM disk, you can unmount it as below which will cause nbdkit to exit and the RAM disk contents to be discarded: $ fusermount3 -u dir $ rmdir dir =head2 Use qemu-nbd to read and modify a qcow2 file You can use L as a subprocess to open any file format which qemu understands: $ mkdir dir $ nbdfuse dir/file.raw [ qemu-nbd -f qcow2 file.qcow2 ] & $ ls -l dir/ total 0 -rw-rw-rw-. 1 nbd nbd 1073741824 Jan 1 10:10 file.raw File F is in raw format, backed by F. Any changes made to F are reflected into the qcow2 file. To unmount the file do: $ fusermount3 -u dir $ rmdir dir =head2 Use nbdkit to create a local file from a file on a web server L is able to both access and transparently uncompress remote disk images on web servers, so you can convert them into virtual files: $ mkdir dir $ nbdfuse dir/disk.iso \ [ nbdkit --exit-with-parent \ curl --filter=xz \ http://builder.libguestfs.org/fedora-30.xz ] & $ ls -l dir/ total 0 -rw-rw-rw-. 1 nbd nbd 6442450944 Jan 1 10:10 disk.iso $ file dir/disk.iso dir/disk.iso: DOS/MBR boot sector $ qemu-system-x86_64 -m 4G \ -drive file=dir/disk.iso,format=raw,if=virtio,snapshot=on $ fusermount3 -u dir In this example we have used the virtual file to boot qemu, but qemu can much more efficiently access NBD servers directly so in the real world that would be the preferred method. =head1 OPTIONS =over 4 =item B<--help> Display brief command line help and exit. =item B<-C> N =item B<--connections> N If multi-conn is used, use N connections to the server. The default is 4. Multi-conn is enabled by default when possible. Modes which run a subprocess, such as I<--command> are not able to use multi-conn. Mode I<--fd> also cannot use multi-conn. Also the server must advertise multi-conn (use L to query what the server supports). See L below. =item B<-C 1> =item B<--connections 1> Disable multi-conn. Only use a single connection to the NBD server. See L below. =item B<--fuse-help> Display FUSE options and exit. See I<-o> below. =item B<-o> FUSE-OPTION Pass extra options to FUSE. To get a list of all the extra options supported by FUSE, use I<--fuse-help>. Some potentially useful FUSE options: =over 4 =item B<-o> B Allow other users to see the filesystem. This option has no effect unless you enable it globally in F. =item B<-o> B Allow the kernel to cache files (reduces the number of reads that have to go through the L API). This is generally a good idea if you can afford the extra memory usage. =item B<-o> BN =item B<-o> BN Use these options to map UIDs and GIDs. =back =item B<-P> PIDFILE =item B<--pidfile> PIDFILE When nbdfuse is ready to serve, write the nbdfuse process ID (PID) to F. This can be used in scripts to wait until nbdfuse is ready. Note you mustn't try to kill nbdfuse. Use C to unmount the mountpoint which will cause nbdfuse to exit cleanly. =item B<-r> =item B<--readonly> Access the network block device read-only. The virtual file will have read-only permissions, and any writes will return errors. If the remote NBD server is read-only then this flag is added automatically. (Check C field in the output of L). =item B<-s> Use single-threaded FUSE operations. See L below. =item B<-v> =item B<--verbose> =item B<-d> Enable verbose messages to stderr. This enables libnbd debugging and other messages. The I<-d> option is an alias, used for compatibility with other FUSE programs. =item B<-V> =item B<--version> Display the package name and version and exit. =back =head1 MODES Modes are used to select the NBD server. Possible modes are: =over 4 =item nbdfuse MOUNTPOINT URI This mode uses an NBD URI (see L and L). For example this specifies a TLS-encrypted connection to C port C<10809>, with export name C: nbdfuse dir nbds://example.com/disk =item nbdfuse MOUNTPOINT B<[> CMD [ARGS ...] B<]> Run an NBD server as a subprocess. In this mode an NBD server can be run directly from the command line with nbdfuse communicating with the server over a socket. This requires that the NBD server supports systemd socket activation. See L above and L. =item nbdfuse MOUNTPOINT B<--command> CMD [ARGS ...] Select command mode. In this mode an NBD server can be run directly from the command line with nbdfuse communicating with the server over the server’s stdin/stdout. Normally you would use this with C. See L. =item nbdfuse MOUNTPOINT B<--fd> N Select file descriptor mode. In this mode a connected socket is passed to nbdfuse. nbdfuse connects to the socket on the numbered file descriptor. See also L. =item nbdfuse MOUNTPOINT B<--tcp> HOST PORT Select TCP mode. Connect to an NBD server on a host and port over an unencrypted TCP socket. See also L. =item nbdfuse MOUNTPOINT B<--unix> SOCKET Select Unix mode. Connect to an NBD server on a Unix domain socket. See also L. =item nbdfuse MOUNTPOINT B<--vsock> CID PORT Select vsock mode. Connect to an NBD server on a C socket. See also L. =back =head1 THREAD MODEL This section describes how the current version of nbdfuse works. Previous versions worked differently in the past, and future versions may work differently in the future. nbdfuse is always multithreaded. nbdfuse will try to open multiple network connections to the NBD server if possible (called "multi-conn"). This usually improves performance. Some things which I multi-conn are: =over 4 =item * using C<[ CMD ... ]> or I<--command> or I<--fd> modes =item * using I<-C 1> =item * the NBD server does not advertise multi-conn (check using L) =back You can control how many connections are made using the I<-C> flag. nbdfuse runs one thread per connection to service NBD commands (these are called "operation threads"). In addition, FUSE itself creates multiple threads to deal with requests coming from the F kernel module. The number of threads that FUSE can create is described in the FUSE documentation, but with many parallel accesses to the virtual file there may be many more FUSE threads created than operation threads, and this should lead to good performance. FUSE requests (like read, write or trim) are multiplexed on to the operation threads (= connections) at random. Each operation thread can handle multiple requests in parallel. Using the I<-s> flag causes FUSE the only run a single thread, but there may still be multiple operation threads. =head1 NOTES =head2 Loop mounting It is tempting (and possible) to loop mount the file. However this will be very slow and may sometimes deadlock. Better alternatives are to use L or L, or more securely L, L or L which can all access NBD servers. =head2 As a way to access NBD servers You can use this to access NBD servers, but it is usually better (and definitely much faster) to use L directly instead. To access NBD servers from the command line, look at L. To copy to and from an NBD server use L. =head1 COMPARISON TO OTHER TOOLS =head2 Compared to C This program is similar in concept to L (which turns NBD into F device nodes), except: =over 4 =item * nbd-client is faster because it uses a special kernel module =item * nbd-client requires root, but nbdfuse can be used by any user =item * nbdfuse virtual files can be mounted anywhere in the filesystem =item * nbdfuse uses libnbd to talk to the NBD server =item * nbdfuse requires FUSE support in the kernel =back =head2 Compared to C L can also attach itself to F device nodes. The differences from nbdfuse are similar to the list above. =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/fuse/test-errors.sh0000755000175000017500000000543214553254637012324 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that NBD errors are reported correctly. . ../tests/functions.sh set -e set -x requires_fuse requires dd --version requires dd iflag=count_bytes,skip_bytes &2 exit 1 else dd if=/dev/zero count=$3 iflag=count_bytes fi ;; *) exit 2 ;; esac EOF libnbd-1.20.3/fuse/test-file-mode.sh0000755000175000017500000000314414553437636012651 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test nbdfuse file mode (added in nbdkit 1.24). . ../tests/functions.sh set -e set -x requires_fuse requires $NBDKIT --exit-with-parent --version requires cmp --version requires dd --version if ! test -r /dev/urandom; then echo "$0: test skipped: /dev/urandom not readable" exit 77 fi pidfile=test-file-mode.pid mp=test-file-mode data=test-file-mode.data cleanup_fn fusermount3 -u $mp cleanup_fn rm -f $pidfile $mp $data touch $mp $VG nbdfuse -P $pidfile $mp \ --command $NBDKIT -s --exit-with-parent memory size=10M & wait_for_pidfile nbdfuse $pidfile dd if=/dev/urandom of=$data bs=1M count=10 # Use a weird block size when writing. It's a bit pointless because # something in the Linux/FUSE stack turns these into exact 4096 byte # writes. dd if=$data of=$mp bs=65519 conv=nocreat,notrunc cmp $data $mp libnbd-1.20.3/fuse/test-long-options.sh0000755000175000017500000000217214525371754013435 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdfuse --long-options looks sane. . ../tests/functions.sh set -e set -x output=test-long-options.out cleanup_fn rm -f $output $VG nbdfuse --long-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- --fuse-help $output grep -- --readonly $output grep -- --version $output libnbd-1.20.3/fuse/test-nbdkit-command.sh0000755000175000017500000000321614553437665013701 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test nbdfuse --command nbdkit. . ../tests/functions.sh set -e set -x requires_fuse requires $NBDKIT --exit-with-parent --version requires cmp --version requires dd --version if ! test -r /dev/urandom; then echo "$0: test skipped: /dev/urandom not readable" exit 77 fi pidfile=test-nbdkit-command.pid mp=test-nbdkit-command.d data=test-nbdkit-command.data cleanup_fn fusermount3 -u $mp cleanup_fn rm -rf $mp cleanup_fn rm -f $pidfile $data mkdir -p $mp $VG nbdfuse -P $pidfile $mp \ --command $NBDKIT -s --exit-with-parent memory size=10M & wait_for_pidfile nbdfuse $pidfile ls -al $mp dd if=/dev/urandom of=$data bs=1M count=10 # Use a weird block size when writing. It's a bit pointless because # something in the Linux/FUSE stack turns these into exact 4096 byte # writes. dd if=$data of=$mp/nbd bs=65519 conv=nocreat,notrunc cmp $data $mp/nbd libnbd-1.20.3/fuse/test-nbdkit-file-null.sh0000755000175000017500000000275014553437710014143 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test nbdfuse file mode + nbdkit-null-plugin. . ../tests/functions.sh set -e set -x requires_fuse requires $NBDKIT --exit-with-parent --version pidfile=test-nbdkit-file-null.pid mp=test-nbdkit-file-null rm -f $pidfile $mp cleanup_fn fusermount3 -u $mp cleanup_fn rm -f $pidfile $mp # Create the underlying file/mountpoint as non-zero sized. truncate -s 1024 $mp $VG nbdfuse -P $pidfile $mp [ $NBDKIT -r --exit-with-parent null ] & wait_for_pidfile nbdfuse $pidfile ls -l $mp test -f $mp # Check the size is zero. # Note the underlying file (created above) is non-zero sized. test ! -s $mp # This would be a good test, but access($mp, W_OK) succeeds. XXX # Check the file is read-only. #test ! -w $mp libnbd-1.20.3/fuse/test-nbdkit.sh0000755000175000017500000000317314553437724012263 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test nbdfuse [ nbdkit ] (using systemd socket activation). . ../tests/functions.sh set -e set -x requires_fuse requires $NBDKIT --exit-with-parent --version requires cmp --version requires dd --version if ! test -r /dev/urandom; then echo "$0: test skipped: /dev/urandom not readable" exit 77 fi pidfile=test-nbdkit.pid mp=test-nbdkit.d data=test-nbdkit.data cleanup_fn fusermount3 -u $mp cleanup_fn rm -rf $mp cleanup_fn rm -f $pidfile $data mkdir -p $mp $VG nbdfuse -P $pidfile $mp [ $NBDKIT --exit-with-parent memory size=10M ] & wait_for_pidfile nbdfuse $pidfile ls -al $mp dd if=/dev/urandom of=$data bs=1M count=10 # Use a weird block size when writing. It's a bit pointless because # something in the Linux/FUSE stack turns these into exact 4096 byte # writes. dd if=$data of=$mp/nbd bs=65519 conv=nocreat,notrunc cmp $data $mp/nbd libnbd-1.20.3/fuse/test-parallel.sh0000755000175000017500000000310614553437742012600 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test parallel reads and writes to the fuse file. . ../tests/functions.sh set -e set -x requires_fuse requires dd --version requires $NBDKIT --version requires $NBDKIT memory --version # Difficult to arrange for this test to be run this test under # valgrind, so don't bother. if [ "x$LIBNBD_VALGRIND" = "x1" ]; then echo "$0: test skipped under valgrind" exit 77 fi mp=test-parallel.d pidfile=test-parallel.pid cleanup_fn fusermount3 -u $mp cleanup_fn rm -rf $mp $pidfile mkdir $mp $VG nbdfuse -P $pidfile $mp [ $NBDKIT --exit-with-parent memory size=10M ] & wait_for_pidfile nbdfuse $pidfile ls -al $mp declare -a pids for f in 1 2 3 4; do dd if=$mp/nbd of=/dev/null & pids+=($!) ; done for f in 1 2 3 4; do dd if=/dev/zero of=$mp/nbd bs=1M count=10 & pids+=($!) ; done wait ${pids[@]} libnbd-1.20.3/fuse/test-pattern.sh0000755000175000017500000001015514553437760012463 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Use nbdkit-pattern-plugin to test we can read from the correct place # in the file, essentially a test of data integrity. . ../tests/functions.sh set -e set -x requires_fuse requires dd --version requires dd iflag=count_bytes,skip_bytes $out cat $out if [ "$(cat $out)" != '00000000 00 00 00 00 00 00 10 00 00 00 00 00 00 00 10 08 |................| 00000010 00 00 00 00 00 00 10 10 00 00 00 00 00 00 10 18 |................| 00000020 00 00 00 00 00 00 10 20 00 00 00 00 00 00 10 28 |....... .......(| 00000030 00 00 00 00 00 00 10 30 00 00 00 00 00 00 10 38 |.......0.......8| 00000040 00 00 00 00 00 00 10 40 00 00 00 00 00 00 10 48 |.......@.......H| 00000050 00 00 00 00 00 00 10 50 00 00 00 00 00 00 10 58 |.......P.......X| 00000060 00 00 00 00 00 00 10 60 00 00 00 00 00 00 10 68 |.......`.......h| 00000070 00 00 00 00 00 00 10 70 00 00 00 00 00 00 10 78 |.......p.......x| 00000080' ]; then echo "$0: error: pattern data did not match expected" exit 1 fi dd if=$mp/nbd skip=1000000 count=128 iflag=count_bytes,skip_bytes | hexdump -C > $out cat $out if [ "$(cat $out)" != '00000000 00 00 00 00 00 0f 42 40 00 00 00 00 00 0f 42 48 |......B@......BH| 00000010 00 00 00 00 00 0f 42 50 00 00 00 00 00 0f 42 58 |......BP......BX| 00000020 00 00 00 00 00 0f 42 60 00 00 00 00 00 0f 42 68 |......B`......Bh| 00000030 00 00 00 00 00 0f 42 70 00 00 00 00 00 0f 42 78 |......Bp......Bx| 00000040 00 00 00 00 00 0f 42 80 00 00 00 00 00 0f 42 88 |......B.......B.| 00000050 00 00 00 00 00 0f 42 90 00 00 00 00 00 0f 42 98 |......B.......B.| 00000060 00 00 00 00 00 0f 42 a0 00 00 00 00 00 0f 42 a8 |......B.......B.| 00000070 00 00 00 00 00 0f 42 b0 00 00 00 00 00 0f 42 b8 |......B.......B.| 00000080' ]; then echo "$0: error: pattern data did not match expected" exit 1 fi dd if=$mp/nbd skip=0 count=128 iflag=count_bytes,skip_bytes | hexdump -C > $out cat $out if [ "$(cat $out)" != '00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 |................| 00000010 00 00 00 00 00 00 00 10 00 00 00 00 00 00 00 18 |................| 00000020 00 00 00 00 00 00 00 20 00 00 00 00 00 00 00 28 |....... .......(| 00000030 00 00 00 00 00 00 00 30 00 00 00 00 00 00 00 38 |.......0.......8| 00000040 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00 48 |.......@.......H| 00000050 00 00 00 00 00 00 00 50 00 00 00 00 00 00 00 58 |.......P.......X| 00000060 00 00 00 00 00 00 00 60 00 00 00 00 00 00 00 68 |.......`.......h| 00000070 00 00 00 00 00 00 00 70 00 00 00 00 00 00 00 78 |.......p.......x| 00000080' ]; then echo "$0: error: pattern data did not match expected" exit 1 fi libnbd-1.20.3/fuse/test-qcow2.sh0000755000175000017500000000312414553440002012016 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # The nbdfuse documentation describes how you can use nbdfuse + # qemu-nbd to open qcow2 files. This claim is tested here. . ../tests/functions.sh set -e set -x requires_fuse requires $QEMU_NBD --version requires qemu-img --version requires cmp --version requires dd --version if ! test -r /dev/urandom; then echo "$0: test skipped: /dev/urandom not readable" exit 77 fi pidfile=test-qcow2.pid mp=test-qcow2.d data=test-qcow2.data qcow2=test-qcow2.qcow2 cleanup_fn fusermount3 -u $mp cleanup_fn rm -rf $mp cleanup_fn rm -f $pidfile $data $qcow2 dd if=/dev/urandom of=$data bs=1M count=1 qemu-img convert -f raw $data -O qcow2 $qcow2 rm -rf $mp mkdir -p $mp $VG nbdfuse -r -P $pidfile $mp [ $QEMU_NBD -f qcow2 --cache=writeback $qcow2 ] & wait_for_pidfile nbdfuse $pidfile ls -al $mp cmp $data $mp/nbd libnbd-1.20.3/fuse/test-short-options.sh0000755000175000017500000000214514525371754013635 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdfuse --short-options looks sane. . ../tests/functions.sh set -e set -x output=test-short-options.out cleanup_fn rm -f $output $VG nbdfuse --short-options > $output if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi cat $output grep -- -o $output grep -- -P $output grep -- -V $output libnbd-1.20.3/fuse/test-trim.sh0000755000175000017500000000452214553260534011753 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test trimming of files using nbdkit sh plugin. . ../tests/functions.sh set -e set -x requires_fuse requires fallocate --version requires dd --version requires $NBDKIT --version requires $NBDKIT sh --version # Difficult to arrange for this test to be run this test under # valgrind, so don't bother. if [ "x$LIBNBD_VALGRIND" = "x1" ]; then echo "$0: test skipped under valgrind" exit 77 fi mp=test-trim.d pidfile=test-trim.pid out=test-trim.out cleanup_fn fusermount3 -u $mp cleanup_fn rm -rf $mp $pidfile $out mkdir $mp export mp pidfile out prog="$0" $NBDKIT -U - \ sh - \ --run ' set -x # Run nbdfuse and connect to the nbdkit server. nbdfuse -P $pidfile $mp --unix $unixsocket & # Wait for the pidfile to appear. for i in {1..60}; do if test -f $pidfile; then break fi sleep 1 done if ! test -f $pidfile; then echo "$prog: nbdfuse PID file $pidfile was not created" exit 1 fi ls -al $mp # Fully allocate the disk. dd if=/dev/zero of=$mp/nbd bs=512 count=2 # Punch a hole in the second sector. fallocate -p -l 512 -o 512 $mp/nbd # We have to explicitly unmount it here else nbdfuse will # never exit and nbdkit will hang. fusermount3 -u $mp ' <<'EOF' # The nbdkit server script. case "$1" in get_size) echo 1024 ;; can_write) ;; can_trim) ;; can_zero) ;; pread) ;; pwrite) echo "$@" >> $out ;; trim) echo "$@" >> $out ;; zero) echo "$@" >> $out ;; *) exit 2 ;; esac EOF # What commands were sent to nbdkit? cat $out grep 'pwrite 512 0' $out grep 'pwrite 512 512' $out grep 'trim 512 512' $out libnbd-1.20.3/fuse/test-unix.sh0000755000175000017500000000350714553260564011770 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test nbdfuse --unix mode. . ../tests/functions.sh set -e set -x requires_fuse requires $NBDKIT --exit-with-parent --version # Difficult to arrange for this test to be run this test under # valgrind, so don't bother. if [ "x$LIBNBD_VALGRIND" = "x1" ]; then echo "$0: test skipped under valgrind" exit 77 fi mp=test-unix.d pidfile=test-unix.pid cleanup_fn fusermount3 -u $mp cleanup_fn rm -rf $mp $pidfile mkdir $mp # Run nbdkit with the null plugin using a Unix domain socket, then # connect nbdfuse to the socket using --unix. export mp pidfile prog="$0" $NBDKIT -U - null --run ' nbdfuse -P $pidfile $mp --unix "$unixsocket" & # Wait for the pidfile to appear. for i in {1..60}; do if test -f $pidfile; then break fi sleep 1 done if ! test -f $pidfile; then echo "$prog: nbdfuse PID file $pidfile was not created" exit 1 fi ls -al $mp # We have to explicitly unmount it here else nbdfuse will # never exit and nbdkit will hang. fusermount3 -u $mp ' libnbd-1.20.3/fuse/test-version.sh0000755000175000017500000000212414525371754012467 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test that nbdfuse --version looks sane. fail=0 output=$($VG nbdfuse --version) if [ $? != 0 ]; then echo "$0: unexpected exit status" fail=1 fi if [ "$output" != "nbdfuse $EXPECTED_VERSION libnbd $EXPECTED_VERSION" ]; then echo "$0: unexpected output" fail=1 fi echo "$output" exit $fail libnbd-1.20.3/fuse/test-zero.sh0000755000175000017500000000471414553260602011756 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test zeroing of files using nbdkit sh plugin. . ../tests/functions.sh set -e set -x # FALLOC_FL_ZERO_RANGE support was added to fuse.ko in Linux 5.14. requires_linux_kernel_version 5.14 requires_fuse requires fallocate --version requires dd --version requires $NBDKIT --version requires $NBDKIT sh --version # Difficult to arrange for this test to be run this test under # valgrind, so don't bother. if [ "x$LIBNBD_VALGRIND" = "x1" ]; then echo "$0: test skipped under valgrind" exit 77 fi mp=test-zero.d pidfile=test-zero.pid out=test-zero.out cleanup_fn fusermount3 -u $mp cleanup_fn rm -rf $mp $pidfile $out mkdir $mp export mp pidfile out prog="$0" $NBDKIT -U - \ sh - \ --run ' set -x # Run nbdfuse and connect to the nbdkit server. nbdfuse -P $pidfile $mp --unix $unixsocket & # Wait for the pidfile to appear. for i in {1..60}; do if test -f $pidfile; then break fi sleep 1 done if ! test -f $pidfile; then echo "$prog: nbdfuse PID file $pidfile was not created" exit 1 fi ls -al $mp # Fully allocate the disk. dd if=/dev/zero of=$mp/nbd bs=512 count=2 # Explicitly zero the second sector. fallocate -z -l 512 -o 512 $mp/nbd # We have to explicitly unmount it here else nbdfuse will # never exit and nbdkit will hang. fusermount3 -u $mp ' <<'EOF' # The nbdkit server script. case "$1" in get_size) echo 1024 ;; can_write) ;; can_trim) ;; can_zero) ;; can_fast_zero) ;; pread) ;; pwrite) echo "$@" >> $out ;; trim) echo "$@" >> $out ;; zero) echo "$@" >> $out ;; *) exit 2 ;; esac EOF # What commands were sent to nbdkit? cat $out grep 'pwrite 512 0' $out grep 'pwrite 512 512' $out grep 'zero 512 512' $out libnbd-1.20.3/ublk/0000755000175000017500000000000014675532654007546 5libnbd-1.20.3/ublk/Makefile.am0000644000175000017500000000324214525371754011517 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk EXTRA_DIST = \ nbdublk.pod \ $(NULL) TESTS_ENVIRONMENT = \ LIBNBD_DEBUG=1 \ $(MALLOC_CHECKS) \ EXPECTED_VERSION=$(VERSION) \ $(NULL) LOG_COMPILER = $(top_builddir)/run TESTS = if HAVE_UBLK bin_PROGRAMS = nbdublk nbdublk_SOURCES = \ nbdublk.c \ nbdublk.h \ tgt.c \ not.cpp \ $(NULL) nbdublk_CPPFLAGS = \ -I$(top_srcdir)/include \ -I$(top_srcdir)/common/include \ -I$(top_srcdir)/common/utils \ $(NULL) nbdublk_CFLAGS = $(WARNINGS_CFLAGS) $(UBLKSRV_CFLAGS) nbdublk_CXXFLAGS = $(WARNINGS_CFLAGS) $(UBLKSRV_CFLAGS) nbdublk_LDADD = \ $(top_builddir)/common/utils/libutils.la \ $(top_builddir)/lib/libnbd.la \ $(UBLKSRV_LIBS) \ $(NULL) if HAVE_POD man_MANS = \ nbdublk.1 \ $(NULL) nbdublk.1: nbdublk.pod $(top_builddir)/podwrapper.pl $(PODWRAPPER) --section=1 --man $@ \ --html $(top_builddir)/html/$@.html \ $< endif HAVE_POD endif HAVE_UBLK libnbd-1.20.3/ublk/Makefile.in0000644000175000017500000014370114675532455011540 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # common-rules.mk is included in every Makefile.am. # subdir-rules.mk is included only in subdirectories. 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you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* ublk support. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "nbdublk.h" #include "ispowerof2.h" #include "vector.h" #include "version.h" #define DEVICE_PREFIX "/dev/ublkb" #define DEVICE_PREFIX_LEN 10 handles nbd = empty_vector; unsigned connections = 4; bool readonly = false; bool rotational; bool can_fua; uint64_t size; uint64_t min_block_size; uint64_t pref_block_size; bool verbose = false; /* The single control device. This is a global so the signal handler * can attempt to stop the device. */ static struct ublksrv_ctrl_dev *dev; enum mode { MODE_URI, /* URI */ MODE_COMMAND, /* --command */ MODE_FD, /* --fd */ MODE_SQUARE_BRACKET, /* [ CMD ], same as --socket-activation*/ MODE_SOCKET_ACTIVATION, /* --socket-activation */ MODE_TCP, /* --tcp */ MODE_UNIX, /* --unix */ MODE_VSOCK, /* --vsock */ }; static void __attribute__ ((noreturn)) usage (FILE *fp, int exitcode) { fprintf (fp, "\n" "Mount NBD server as a virtual device:\n" "\n" #ifdef HAVE_LIBXML2 " nbdublk [-C N|--connections N] [-r] [-v|--verbose]\n" " " DEVICE_PREFIX " URI\n" "\n" "Other modes:\n" "\n" #endif " nbdublk " DEVICE_PREFIX " [ CMD [ARGS ...] ]\n" " nbdublk " DEVICE_PREFIX " --command CMD [ARGS ...]\n" " nbdublk " DEVICE_PREFIX " --fd N\n" " nbdublk " DEVICE_PREFIX " --tcp HOST PORT\n" " nbdublk " DEVICE_PREFIX " --unix SOCKET\n" " nbdublk " DEVICE_PREFIX " --vsock CID PORT\n" "\n" "You can also use just the device number or '-' to allocate one:\n" "\n" " nbdublk ...\n" " nbdublk - ...\n" "\n" "To unmount:\n" "\n" " ublk del -n \n" "\n" "Other options:\n" "\n" " nbdublk --help\n" " nbdublk -V|--version\n" "\n" "Please read the nbdublk(1) manual page for full usage.\n" "\n" ); exit (exitcode); } /* Which modes support multi-conn? We cannot connect multiple times * to subprocesses (since we'd have to launch multiple subprocesses). */ static bool mode_is_multi_conn_compatible (enum mode mode) { switch (mode) { case MODE_COMMAND: case MODE_SQUARE_BRACKET: case MODE_SOCKET_ACTIVATION: case MODE_FD: return false; case MODE_URI: case MODE_TCP: case MODE_UNIX: case MODE_VSOCK: return true; default: abort (); } } static struct nbd_handle *create_and_connect (enum mode mode, int argc, char **argv); static void signal_handler (int sig); int main (int argc, char *argv[]) { enum mode mode = MODE_URI; enum { HELP_OPTION = CHAR_MAX + 1, LONG_OPTIONS, SHORT_OPTIONS, }; /* Note the "+" means we stop processing as soon as we get to the * first non-option argument (the device) and then we parse the rest * of the command line without getopt. */ const char *short_options = "+C:rvV"; const struct option long_options[] = { { "help", no_argument, NULL, HELP_OPTION }, { "long-options", no_argument, NULL, LONG_OPTIONS }, { "connections", required_argument, NULL, 'C' }, { "readonly", no_argument, NULL, 'r' }, { "read-only", no_argument, NULL, 'r' }, { "short-options", no_argument, NULL, SHORT_OPTIONS }, { "verbose", no_argument, NULL, 'v' }, { "version", no_argument, NULL, 'V' }, { NULL } }; int c, r; size_t i; struct nbd_handle *h; int64_t rs; uint64_t max_block_size; const char *s; struct ublksrv_dev_data data = { .dev_id = -1 }; const struct ublksrv_ctrl_dev_info *dinfo; struct sigaction sa = { 0 }; for (;;) { c = getopt_long (argc, argv, short_options, long_options, NULL); if (c == -1) break; switch (c) { case HELP_OPTION: usage (stdout, EXIT_SUCCESS); case LONG_OPTIONS: for (i = 0; long_options[i].name != NULL; ++i) { if (strcmp (long_options[i].name, "long-options") != 0 && strcmp (long_options[i].name, "short-options") != 0) printf ("--%s\n", long_options[i].name); } exit (EXIT_SUCCESS); case SHORT_OPTIONS: for (i = 0; short_options[i]; ++i) { if (short_options[i] != ':' && short_options[i] != '+') printf ("-%c\n", short_options[i]); } exit (EXIT_SUCCESS); case 'C': if (sscanf (optarg, "%u", &connections) != 1 || connections < 1 || connections > 1024) { fprintf (stderr, "%s: --connections option-argument must be an " "unsigned integer >= 1\n", argv[0]); exit (EXIT_FAILURE); } break; case 'r': readonly = true; break; case 'v': verbose = true; break; case 'V': display_version ("nbdublk"); exit (EXIT_SUCCESS); default: usage (stderr, EXIT_FAILURE); } } /* There must be at least 2 parameters (device and * URI/--command/etc). */ if (argc - optind < 2) usage (stderr, EXIT_FAILURE); /* Parse and check the device name. */ s = argv[optind++]; /* /dev/ublkc */ if (strncmp (s, DEVICE_PREFIX, DEVICE_PREFIX_LEN) == 0) { if (sscanf (&s[DEVICE_PREFIX_LEN], "%u", &data.dev_id) != 1) { fprintf (stderr, "%s: could not parse ublk device name: %s\n", argv[0], s); exit (EXIT_FAILURE); } } else if (s[0] >= '0' && s[0] <= '9') { if (sscanf (s, "%u", &data.dev_id) != 1) { fprintf (stderr, "%s: could not parse ublk device name: %s\n", argv[0], s); exit (EXIT_FAILURE); } } else if (s[0] == '-') { data.dev_id = -1; /* autoallocate */ } else { fprintf (stderr, "%s: expecting device name %s\n", argv[0], DEVICE_PREFIX); exit (EXIT_FAILURE); } /* The next parameter is either a URI or a mode switch. */ if (strcmp (argv[optind], "--command") == 0 || strcmp (argv[optind], "--cmd") == 0) { mode = MODE_COMMAND; optind++; } else if (strcmp (argv[optind], "[") == 0) { mode = MODE_SQUARE_BRACKET; optind++; } else if (strcmp (argv[optind], "--socket-activation") == 0 || strcmp (argv[optind], "--systemd-socket-activation") == 0) { mode = MODE_SOCKET_ACTIVATION; optind++; } else if (strcmp (argv[optind], "--fd") == 0) { mode = MODE_FD; optind++; } else if (strcmp (argv[optind], "--tcp") == 0) { mode = MODE_TCP; optind++; } else if (strcmp (argv[optind], "--unix") == 0) { mode = MODE_UNIX; optind++; } else if (strcmp (argv[optind], "--vsock") == 0) { mode = MODE_VSOCK; optind++; } /* This is undocumented, but allow either URI or --uri URI. */ else if (strcmp (argv[optind], "--uri") == 0) { mode = MODE_URI; optind++; } else if (argv[optind][0] == '-') { fprintf (stderr, "%s: unknown mode: %s\n", argv[0], argv[optind]); usage (stderr, EXIT_FAILURE); } #ifndef HAVE_LIBXML2 if (mode == MODE_URI) { fprintf (stderr, "%s: URIs are not supported in this build of libnbd\n", argv[0]); exit (EXIT_FAILURE); } #endif /* Check there are enough parameters following given the mode. */ switch (mode) { case MODE_URI: case MODE_FD: case MODE_UNIX: if (argc - optind != 1) usage (stderr, EXIT_FAILURE); break; case MODE_TCP: case MODE_VSOCK: if (argc - optind != 2) usage (stderr, EXIT_FAILURE); break; case MODE_COMMAND: case MODE_SOCKET_ACTIVATION: if (argc - optind < 1) usage (stderr, EXIT_FAILURE); break; case MODE_SQUARE_BRACKET: if (argc - optind < 2 || strcmp (argv[argc-1], "]") != 0) usage (stderr, EXIT_FAILURE); break; } /* At this point we know the command line is valid. */ /* Create the libnbd handle and connect to it. */ h = create_and_connect (mode, argc, argv); if (handles_append (&nbd, h) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } /* If the server supports multi-conn, and we are able to, try to * open more handles. */ if (connections > 1 && mode_is_multi_conn_compatible (mode) && nbd_can_multi_conn (nbd.ptr[0]) >= 1) { if (handles_reserve (&nbd, connections-1) == -1) { perror ("realloc"); exit (EXIT_FAILURE); } for (i = 2; i <= connections; ++i) { h = create_and_connect (mode, argc, argv); handles_append (&nbd, h); /* reserved above, so can't fail */ } } connections = nbd.len; /* Get the size and preferred block sizes. */ rs = nbd_get_size (nbd.ptr[0]); if (rs == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } size = rs; rs = nbd_get_block_size (nbd.ptr[0], LIBNBD_SIZE_MAXIMUM); if (rs <= 0 || rs > 64 * 1024 * 1024) max_block_size = 64 * 1024 * 1024; else max_block_size = rs; if (!is_power_of_2 (max_block_size)) { fprintf (stderr, "%s: %s block size is not a power of two: %" PRIu64 "\n", argv[0], "maximum", max_block_size); exit (EXIT_FAILURE); } rs = nbd_get_block_size (nbd.ptr[0], LIBNBD_SIZE_PREFERRED); if (rs <= 0) pref_block_size = 4096; else pref_block_size = rs; if (!is_power_of_2 (pref_block_size)) { fprintf (stderr, "%s: %s block size is not a power of two: %" PRIu64 "\n", argv[0], "preferred", pref_block_size); exit (EXIT_FAILURE); } rs = nbd_get_block_size (nbd.ptr[0], LIBNBD_SIZE_MINIMUM); if (rs <= 0) min_block_size = 512; /* minimum that the kernel supports */ else min_block_size = rs; if (!is_power_of_2 (min_block_size)) { fprintf (stderr, "%s: %s block size is not a power of two: %" PRIu64 "\n", argv[0], "minimum", min_block_size); exit (EXIT_FAILURE); } /* If the remote NBD server is readonly, then act as if the '-r' * flag was given on the nbdublk command line. */ if (nbd_is_read_only (nbd.ptr[0]) > 0) readonly = true; rotational = nbd_is_rotational (nbd.ptr[0]) > 0; can_fua = nbd_can_fua (nbd.ptr[0]) > 0; if (verbose) fprintf (stderr, "%s: size: %" PRIu64 " connections: %u%s\n", argv[0], size, connections, readonly ? " readonly" : ""); /* Fill in other fields in 'data' struct. */ data.max_io_buf_bytes = max_block_size; data.nr_hw_queues = connections; data.queue_depth = 64; data.tgt_type = "nbd"; data.tgt_ops = &tgt_type; data.flags = 0; data.ublksrv_flags = UBLKSRV_F_NEED_EVENTFD; dev = ublksrv_ctrl_init (&data); if (!dev) { fprintf (stderr, "%s: ublksrv_ctrl_init: %m\n", argv[0]); exit (EXIT_FAILURE); } dinfo = ublksrv_ctrl_get_dev_info (dev); /* Register signal handlers to try to stop the device. */ sa.sa_handler = signal_handler; sigaction (SIGHUP, &sa, NULL); sigaction (SIGINT, &sa, NULL); sigaction (SIGTERM, &sa, NULL); sa.sa_handler = SIG_IGN; sigaction (SIGPIPE, &sa, NULL); r = ublksrv_ctrl_add_dev (dev); if (r < 0) { errno = -r; fprintf (stderr, "%s: ublksrv_ctrl_add_dev: "DEVICE_PREFIX "%d: %m\n", argv[0], dinfo->dev_id); ublksrv_ctrl_deinit (dev); exit (EXIT_FAILURE); } if (verbose) fprintf (stderr, "%s: created %s%d\n", argv[0], DEVICE_PREFIX, dinfo->dev_id); /* XXX nbdfuse creates a pid file. However I reason that you can * tell if the service is available when the block device is created * so a pid file is not necessary. May need to revisit this. */ if (start_daemon (dev) == -1) { ublksrv_ctrl_del_dev (dev); ublksrv_ctrl_deinit (dev); for (i = 0; i < nbd.len; ++i) nbd_close (nbd.ptr[i]); exit (EXIT_FAILURE); } /* Close ublk device. */ ublksrv_ctrl_del_dev (dev); ublksrv_ctrl_deinit (dev); /* Close NBD handle(s). */ for (i = 0; i < nbd.len; ++i) nbd_close (nbd.ptr[i]); exit (EXIT_SUCCESS); } /* Called from main() above to create an NBD handle and connect to it. * For multi-conn, this may be called several times. */ static struct nbd_handle * create_and_connect (enum mode mode, int argc, char **argv) { int fd; uint32_t cid, port; struct nbd_handle *h; /* Create the libnbd handle. */ h = nbd_create (); if (h == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_set_debug (h, verbose); /* Connect to the NBD server synchronously. */ switch (mode) { case MODE_URI: if (nbd_connect_uri (h, argv[optind]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_COMMAND: if (nbd_connect_command (h, &argv[optind]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_SQUARE_BRACKET: /* This is the same as MODE_SOCKET_ACTIVATION but we must eat the * closing square bracket on the command line. */ assert (strcmp (argv[argc-1], "]") == 0); /* checked above */ argv[argc-1] = NULL; /*FALLTHROUGH*/ case MODE_SOCKET_ACTIVATION: if (nbd_connect_systemd_socket_activation (h, &argv[optind]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_FD: if (sscanf (argv[optind], "%d", &fd) != 1) { fprintf (stderr, "%s: could not parse file descriptor: %s\n\n", argv[0], argv[optind]); exit (EXIT_FAILURE); } if (nbd_connect_socket (h, fd) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_TCP: if (nbd_connect_tcp (h, argv[optind], argv[optind+1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_UNIX: if (nbd_connect_unix (h, argv[optind]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; case MODE_VSOCK: if (sscanf (argv[optind], "%" SCNu32, &cid) != 1) { fprintf (stderr, "%s: could not parse vsock cid: %s\n\n", argv[0], argv[optind]); exit (EXIT_FAILURE); } if (sscanf (argv[optind+1], "%" SCNu32, &port) != 1) { fprintf (stderr, "%s: could not parse vsock port: %s\n\n", argv[0], argv[optind]); exit (EXIT_FAILURE); } if (nbd_connect_vsock (h, cid, port) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } break; } return h; } static void signal_handler (int sig) { /* XXX Racy, but not much else we can do. */ ublksrv_ctrl_stop_dev (dev); } libnbd-1.20.3/ublk/nbdublk.h0000644000175000017500000000256614616437241011260 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_NBDUBLK_H #define LIBNBD_NBDUBLK_H #include #include #include #include "vector.h" DEFINE_VECTOR_TYPE (handles, struct nbd_handle *); #define UBLKSRV_TGT_TYPE_NBD 0 extern handles nbd; extern unsigned connections; extern bool readonly; extern bool rotational; extern bool can_fua; extern char *filename; extern uint64_t size; extern uint64_t min_block_size; extern uint64_t pref_block_size; extern bool verbose; extern struct ublksrv_tgt_type tgt_type; extern int start_daemon (struct ublksrv_ctrl_dev *dev); #endif /* LIBNBD_NBDUBLK_H */ libnbd-1.20.3/ublk/tgt.c0000644000175000017500000003201514525371754010425 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #ifdef HAVE_STDATOMIC_H #include #else /* Rely on ints being atomic enough on the platform. */ #define _Atomic /**/ #endif #include #include #include #include #include "ispowerof2.h" #include "vector.h" #include "nbdublk.h" /* Thread model: * * There are two threads per NBD connection. One thread * ('io_uring_thread') handles the io_uring traffic. The other thread * ('nbd_work_thread') handles the NBD asynchronous commands for that * connection. * * The thread_info entry is shared between each pair of threads. */ struct thread_info { const struct ublksrv_dev *dev; size_t i; /* index into nbd.ptr[], also q_id */ pthread_t io_uring_thread; pthread_t nbd_work_thread; struct ublksrv_aio_ctx *aio_ctx; struct ublksrv_aio_list compl; }; DEFINE_VECTOR_TYPE (thread_infos, struct thread_info); static thread_infos thread_info; static pthread_barrier_t barrier; static char jbuf[4096]; static pthread_mutex_t jbuf_lock = PTHREAD_MUTEX_INITIALIZER; /* Command completion callback (called on the NBD thread). */ static int command_completed (void *vpdata, int *error) { struct ublksrv_aio *req = vpdata; int q_id = ublksrv_aio_qid (req->id); struct ublksrv_aio_list *compl = &thread_info.ptr[q_id].compl; if (verbose) fprintf (stderr, "%s: command_completed: tag=%d q_id=%u error=%d\n", "nbdublk", ublksrv_aio_tag (req->id), ublksrv_aio_qid (req->id), *error); /* If the command failed, override the normal result. */ if (*error != 0) req->res = *error; pthread_spin_lock (&compl->lock); aio_list_add (&compl->list, req); pthread_spin_unlock (&compl->lock); return 1; } static int aio_submitter (struct ublksrv_aio_ctx *ctx, struct ublksrv_aio *req) { const struct ublksrv_io_desc *iod = &req->io; const unsigned op = ublksrv_get_op (iod); const unsigned flags = ublksrv_get_flags (iod); const bool fua = flags & UBLK_IO_F_FUA; const bool alloc_zero = flags & UBLK_IO_F_NOUNMAP; /* else punch hole */ const size_t q_id = ublksrv_aio_qid (req->id); /* also NBD handle number */ struct nbd_handle *h = nbd.ptr[q_id]; uint32_t nbd_flags = 0; int64_t r; nbd_completion_callback cb; if (verbose) fprintf (stderr, "%s: handle_io_async: tag = %d q_id = %zu\n", "nbdublk", ublksrv_aio_tag (req->id), q_id); req->res = iod->nr_sectors << 9; cb.callback = command_completed; cb.user_data = req; cb.free = NULL; switch (op) { case UBLK_IO_OP_READ: r = nbd_aio_pread (h, (void *)iod->addr, iod->nr_sectors << 9, iod->start_sector << 9, cb, 0); if (r == -1) { fprintf (stderr, "%s: %s\n", "nbdublk", nbd_get_error ()); return -EINVAL; } break; case UBLK_IO_OP_WRITE: if (fua && can_fua) nbd_flags |= LIBNBD_CMD_FLAG_FUA; r = nbd_aio_pwrite (h, (const void *)iod->addr, iod->nr_sectors << 9, iod->start_sector << 9, cb, nbd_flags); if (r == -1) { fprintf (stderr, "%s: %s\n", "nbdublk", nbd_get_error ()); return -EINVAL; } break; case UBLK_IO_OP_FLUSH: r = nbd_aio_flush (h, cb, 0); if (r == -1) { fprintf (stderr, "%s: %s\n", "nbdublk", nbd_get_error ()); return -EINVAL; } break; case UBLK_IO_OP_DISCARD: if (fua && can_fua) nbd_flags |= LIBNBD_CMD_FLAG_FUA; r = nbd_aio_trim (h, iod->nr_sectors << 9, iod->start_sector << 9, cb, nbd_flags); if (r == -1) { fprintf (stderr, "%s: %s\n", "nbdublk", nbd_get_error ()); return -EINVAL; } break; case UBLK_IO_OP_WRITE_ZEROES: if (fua && can_fua) nbd_flags |= LIBNBD_CMD_FLAG_FUA; if (alloc_zero) nbd_flags |= LIBNBD_CMD_FLAG_NO_HOLE; r = nbd_aio_zero (h, iod->nr_sectors << 9, iod->start_sector << 9, cb, nbd_flags); if (r == -1) { fprintf (stderr, "%s: %s\n", "nbdublk", nbd_get_error ()); return -EINVAL; } break; default: fprintf (stderr, "%s: unknown operation %u\n", "nbdublk", op); return -ENOTSUP; } /* We would return 1 if the request was completed, but that doesn't * happen in any case above. */ return 0; } static void * nbd_work_thread (void *vpinfo) { struct thread_info *ti = vpinfo; struct nbd_handle *h = nbd.ptr[ti->i]; struct ublksrv_aio_ctx *aio_ctx = thread_info.ptr[ti->i].aio_ctx; struct ublksrv_aio_list *c = &thread_info.ptr[ti->i].compl; /* Signal to the main thread that we have initialized. */ pthread_barrier_wait (&barrier); while (!ublksrv_aio_ctx_dead (aio_ctx)) { struct aio_list compl; aio_list_init (&compl); ublksrv_aio_submit_worker (aio_ctx, aio_submitter, &compl); pthread_spin_lock (&c->lock); aio_list_splice (&c->list, &compl); pthread_spin_unlock (&c->lock); ublksrv_aio_complete_worker (aio_ctx, &compl); if (nbd_poll2 (h, ublksrv_aio_get_efd (aio_ctx), -1) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } return NULL; } static void * io_uring_thread (void *vpinfo) { struct thread_info *thread_info = vpinfo; const struct ublksrv_dev *dev = thread_info->dev; const struct ublksrv_ctrl_dev *cdev = ublksrv_get_ctrl_dev (dev); const struct ublksrv_ctrl_dev_info *dinfo = ublksrv_ctrl_get_dev_info (cdev); const unsigned dev_id = dinfo->dev_id; const size_t q_id = thread_info->i; const struct ublksrv_queue *q; int r; int tid = gettid (); pthread_mutex_lock (&jbuf_lock); ublksrv_json_write_queue_info (cdev, jbuf, sizeof jbuf, q_id, tid); pthread_mutex_unlock (&jbuf_lock); q = ublksrv_queue_init (dev, q_id, NULL); if (!q) { perror ("ublksrv_queue_init"); return NULL; } if (verbose) fprintf (stderr, "%s: ublk tid %d dev %d queue %d started\n", "nbdublk", tid, dev_id, q->q_id); for (;;) { r = ublksrv_process_io (q); if (r < 0) { if (r != -ENODEV) { /* ENODEV is expected when the device is deleted */ errno = -r; perror ("ublksrv_process_io"); } break; } } if (verbose) fprintf (stderr, "%s: ublk tid %d dev %d queue %d exited\n", "nbdublk", tid, dev_id, q->q_id); ublksrv_queue_deinit (q); return NULL; } static int set_parameters (struct ublksrv_ctrl_dev *ctrl_dev, const struct ublksrv_dev *dev) { const struct ublksrv_ctrl_dev_info *dinfo = ublksrv_ctrl_get_dev_info (ctrl_dev); const unsigned attrs = (readonly ? UBLK_ATTR_READ_ONLY : 0) | (rotational ? UBLK_ATTR_ROTATIONAL : 0) | (can_fua ? UBLK_ATTR_FUA : 0); struct ublk_params p = { .types = UBLK_PARAM_TYPE_BASIC, .basic = { .attrs = attrs, .logical_bs_shift = 9, .physical_bs_shift = 9, .io_opt_shift = log_2_bits (pref_block_size), .io_min_shift = log_2_bits (min_block_size), .max_sectors = dinfo->max_io_buf_bytes >> 9, .dev_sectors = dev->tgt.dev_size >> 9, }, .discard = { .max_discard_sectors = UINT_MAX >> 9, .max_discard_segments = 1, }, }; int r; pthread_mutex_lock (&jbuf_lock); ublksrv_json_write_params (&p, jbuf, sizeof jbuf); pthread_mutex_unlock (&jbuf_lock); r = ublksrv_ctrl_set_params (ctrl_dev, &p); if (r < 0) { errno = -r; perror ("ublksrv_ctrl_set_params"); return -1; } return 0; } int start_daemon (struct ublksrv_ctrl_dev *ctrl_dev) { const struct ublksrv_ctrl_dev_info *dinfo = ublksrv_ctrl_get_dev_info (ctrl_dev); const struct ublksrv_dev *dev; size_t i; int r; assert (dinfo->nr_hw_queues == connections); assert (nbd.len == connections); if (verbose) fprintf (stderr, "%s: starting daemon\n", "nbdublk"); /* This barrier is used to ensure all NBD work threads have started * up before we proceed to start the device. */ r = pthread_barrier_init (&barrier, NULL, nbd.len + 1); if (r != 0) { errno = r; perror ("nbdublk: pthread_barrier_init"); return -1; } /* Reserve space for the thread_info. */ if (thread_infos_reserve (&thread_info, nbd.len) == -1) { perror ("realloc"); return -1; } r = ublksrv_ctrl_get_affinity (ctrl_dev); if (r < 0) { errno = r; perror ("ublksrv_ctrl_get_affinity"); return -1; } dev = ublksrv_dev_init (ctrl_dev); if (!dev) { /* Annoyingly libublksrv logs some not very useful information to * syslog when this fails. */ fprintf (stderr, "%s: ublksrv_dev_init failed: " "there may be more information in syslog\n", "nbdublk"); return -1; } /* Create the threads. */ for (i = 0; i < nbd.len; ++i) { /* Note this cannot fail because of previous reserve. */ thread_infos_append (&thread_info, (struct thread_info) { .dev = dev, .i = i,}); thread_info.ptr[i].aio_ctx = ublksrv_aio_ctx_init (dev, 0); if (!thread_info.ptr[i].aio_ctx) { perror ("ublksrv_aio_ctx_init"); return -1; } ublksrv_aio_init_list (&thread_info.ptr[i].compl); r = pthread_create (&thread_info.ptr[i].io_uring_thread, NULL, io_uring_thread, &thread_info.ptr[i]); if (r != 0) goto bad_pthread; r = pthread_create (&thread_info.ptr[i].nbd_work_thread, NULL, nbd_work_thread, &thread_info.ptr[i]); if (r != 0) { bad_pthread: errno = r; perror ("nbdublk: pthread"); ublksrv_dev_deinit (dev); return -1; } } /* Wait on the barrier to ensure all NBD work threads are up. */ pthread_barrier_wait (&barrier); pthread_barrier_destroy (&barrier); if (set_parameters (ctrl_dev, dev) == -1) { ublksrv_dev_deinit (dev); return -1; } /* Start the device. */ r = ublksrv_ctrl_start_dev (ctrl_dev, getpid ()); if (r < 0) { errno = -r; perror ("ublksrv_ctrl_start_dev"); ublksrv_dev_deinit (dev); return -1; } ublksrv_ctrl_get_info (ctrl_dev); ublksrv_ctrl_dump (ctrl_dev, jbuf); /* Wait for io_uring threads to exit. */ for (i = 0; i < nbd.len; ++i) pthread_join (thread_info.ptr[i].io_uring_thread, NULL); for (i = 0; i < nbd.len; ++i) { ublksrv_aio_ctx_shutdown (thread_info.ptr[i].aio_ctx); pthread_join (thread_info.ptr[i].nbd_work_thread, NULL); ublksrv_aio_ctx_deinit (thread_info.ptr[i].aio_ctx); } ublksrv_dev_deinit (dev); //thread_infos_reset (&thread_info); return 0; } static int init_tgt (struct ublksrv_dev *dev, int type, int argc, char *argv[]) { const struct ublksrv_ctrl_dev *cdev = ublksrv_get_ctrl_dev (dev); const struct ublksrv_ctrl_dev_info *info = ublksrv_ctrl_get_dev_info (cdev); struct ublksrv_tgt_info *tgt = &dev->tgt; struct ublksrv_tgt_base_json tgt_json = { .type = type, .name = "nbd", }; if (verbose) fprintf (stderr, "%s: init_tgt: type = %d\n", "nbdublk", type); if (type != UBLKSRV_TGT_TYPE_NBD) return -1; tgt_json.dev_size = tgt->dev_size = size; tgt->tgt_ring_depth = info->queue_depth; tgt->nr_fds = 0; ublksrv_json_write_dev_info (ublksrv_get_ctrl_dev (dev), jbuf, sizeof jbuf); ublksrv_json_write_target_base_info (jbuf, sizeof jbuf, &tgt_json); return 0; } static void handle_event (const struct ublksrv_queue *q) { struct ublksrv_aio_ctx *aio_ctx = thread_info.ptr[q->q_id].aio_ctx; if (verbose) fprintf (stderr, "%s: handle_event: q_id = %d\n", "nbdublk", q->q_id); ublksrv_aio_handle_event (aio_ctx, q); } static int handle_io_async (const struct ublksrv_queue *q, const struct ublk_io_data *io) { struct ublksrv_aio_ctx *aio_ctx = thread_info.ptr[q->q_id].aio_ctx; const struct ublksrv_io_desc *iod = io->iod; struct ublksrv_aio *req = ublksrv_aio_alloc_req (aio_ctx, 0); req->io = *iod; req->id = ublksrv_aio_pid_tag (q->q_id, io->tag); if (verbose) fprintf (stderr, "%s: qid %d tag %d\n", "nbdublk", q->q_id, io->tag); ublksrv_aio_submit_req (aio_ctx, q, req); return 0; } struct ublksrv_tgt_type tgt_type = { .type = UBLKSRV_TGT_TYPE_NBD, .name = "nbd", .init_tgt = init_tgt, .handle_io_async = handle_io_async, .handle_event = handle_event, }; libnbd-1.20.3/ublk/not.cpp0000644000175000017500000000165514525371754010775 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include /* This file does nothing except to force nbdublk to be linked as a * C++ program because libublksrv requires it. */ libnbd-1.20.3/ublk/nbdublk.pod0000644000175000017500000001256214525371754011615 =head1 NAME nbdublk - connect network block device to a local device =head1 SYNOPSIS nbdublk [-C N|--connections N] [-r] [-v|--verbose] /dev/ublkb URI nbdublk [-C N|--connections N] [-r] [-v|--verbose] URI nbdublk [-C N|--connections N] [-r] [-v|--verbose] - URI =for paragraph nbdublk /dev/ublkb [ CMD [ARGS ...] ] =for paragraph nbdublk /dev/ublkb --command CMD [ARGS ...] =for paragraph nbdublk /dev/ublkb --fd N =for paragraph nbdublk /dev/ublkb --tcp HOST PORT =for paragraph nbdublk /dev/ublkb --unix SOCKET =for paragraph nbdublk /dev/ublkb --vsock CID PORT To list devices: ublk list To unmount: ublk del -n Other commands: nbdublk --help =for paragraph nbdublk -V|--version =for paragraph modprobe ublk_drv =head1 DESCRIPTION nbdublk is used to create a Linux device FNE>> from a network block device server. Reads and writes to the virtual device are turned into reads and writes to the NBD server. The first parameter is the Linux device name of the form FNE>> (for some number INE>), for example F, F, &c. You can just use the number on its own, or use C<-> to get ublk to allocate an unused device. The second and following parameters refer to the NBD server, which can be local or remote. The server can be specified as an NBD URI (like C), or as an NBD server running as a subprocess of nbdublk (using S>), or in various other ways (see L). Use L to list and delete devices. =head2 Requires Linux and root This program requires Linux E 6.0 and the C kernel module. You may need to load the kernel module and you usually have to run nbdublk as root. =head1 EXAMPLE Create an NBD ublk device connected to a remote NBD server: # nbdublk /dev/ublkb0 nbd://server List the device: # ublk list dev id 0: nr_hw_queues 4 queue_depth 64 block size 1 dev_capacity 0 max rq size 67108864 daemon pid 32382 flags 0x0 state LIVE You can then use C as a regular device. To disconnect the device use: # ublk del -n 0 =head1 OPTIONS =over 4 =item B<--help> Display brief command line help and exit. =item B<-C> N =item B<--connections> N If multi-conn is used, use N connections to the server. The default is 4. Multi-conn is enabled by default when possible. Modes which run a subprocess, such as I<--command> are not able to use multi-conn. Mode I<--fd> also cannot use multi-conn. Also the server must advertise multi-conn (use L to query what the server supports). =item B<-C 1> =item B<--connections 1> Disable multi-conn. Only use a single connection to the NBD server. See L below. =item B<-r> =item B<--readonly> Access the network block device read-only. The virtual file will have read-only permissions, and any writes will return errors. If the remote NBD server is read-only then this flag is added automatically. (Check C field in the output of L). =item B<-v> =item B<--verbose> Enable verbose messages to stderr. This enables libnbd debugging and other messages. =item B<-V> =item B<--version> Display the package name and version and exit. =back =head1 MODES Modes are used to select the NBD server. Possible modes are: =over 4 =item nbdublk DEVICE URI This mode uses an NBD URI (see L and L). For example this specifies a TLS-encrypted connection to C port C<10809>, with export name C: nbdublk /dev/ublkb0 nbds://example.com/disk =item nbdublk DEVICE B<[> CMD [ARGS ...] B<]> Run an NBD server as a subprocess. In this mode an NBD server can be run directly from the command line with nbdublk communicating with the server over a socket. This requires that the NBD server supports systemd socket activation. See L above and L. =item nbdublk DEVICE B<--command> CMD [ARGS ...] Select command mode. In this mode an NBD server can be run directly from the command line with nbdublk communicating with the server over the server’s stdin/stdout. Normally you would use this with C. See L. =item nbdublk DEVICE B<--fd> N Select file descriptor mode. In this mode a connected socket is passed to nbdublk. nbdublk connects to the socket on the numbered file descriptor. See also L. =item nbdublk DEVICE B<--tcp> HOST PORT Select TCP mode. Connect to an NBD server on a host and port over an unencrypted TCP socket. See also L. =item nbdublk DEVICE B<--unix> SOCKET Select Unix mode. Connect to an NBD server on a Unix domain socket. See also L. =item nbdublk DEVICE B<--vsock> CID PORT Select vsock mode. Connect to an NBD server on a C socket. See also L. =back =head1 SEE ALSO L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L, L. =head1 AUTHORS Richard W.M. Jones Ming Lei =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/ocaml/0000755000175000017500000000000014675532654007704 5libnbd-1.20.3/ocaml/Makefile.am0000644000175000017500000001134714600010333011633 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk generator_built = \ NBD.mli \ NBD.ml \ nbd-c.c \ $(NULL) EXTRA_DIST = \ $(generator_built) \ libnbd-ocaml.pod \ $(NULL) CLEANFILES += *.annot *.cmi *.cmo *.cmx *.o *.a *.so *.cma *.cmxa man_MANS = CLEANFILES += $(man_MANS) if HAVE_POD man_MANS += libnbd-ocaml.3 libnbd-ocaml.3: libnbd-ocaml.pod $(top_builddir)/podwrapper.pl $(PODWRAPPER) --section=3 --man $@ \ --html $(top_builddir)/html/$@.html \ $< endif HAVE_POD if HAVE_OCAML OCAMLFLAGS = $(OCAML_FLAGS) $(OCAML_WARN_ERROR) -ccopt '$(CFLAGS)' OCAMLPACKAGES = -package $(OCAMLFIND_PACKAGES) -I $(srcdir) -I $(builddir) noinst_DATA = mlnbd.cma META if HAVE_OCAMLOPT noinst_DATA += mlnbd.cmxa endif # Build the C part into a library, so that automake handles the C # compilation step for us. 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See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include "nbd-c.h" #include #include #include #include #include #include #include #pragma GCC diagnostic ignored "-Wmissing-prototypes" /* This is passed to *_wrapper as the user_data pointer * and freed in the free_user_data function below. */ struct user_data { value fnv; /* Optional GC root pointing to OCaml function. */ value bufv; /* Optional GC root pointing to persistent buffer. */ }; static struct user_data * alloc_user_data (void) { struct user_data *data = calloc (1, sizeof *data); if (data == NULL) caml_raise_out_of_memory (); return data; } static void free_user_data (void *user_data) { struct user_data *data = user_data; if (data->fnv != 0) caml_remove_generational_global_root (&data->fnv); if (data->bufv != 0) caml_remove_generational_global_root (&data->bufv); free (data); } /* Wrapper for chunk callback. */ static int chunk_wrapper_locked (void *user_data, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error) { CAMLparam0 (); CAMLlocal4 (subbufv, offsetv, statusv, errorv); CAMLlocal2 (exn, rv); const struct user_data *data = user_data; int r; value args[4]; subbufv = caml_alloc_initialized_string (count, subbuf); offsetv = caml_copy_int64 (offset); statusv = Val_int (status); errorv = caml_alloc_tuple (1); Store_field (errorv, 0, Val_int (*error)); args[0] = subbufv; args[1] = offsetv; args[2] = statusv; args[3] = errorv; rv = caml_callbackN_exn (data->fnv, 4, args); *error = Int_val (Field (errorv, 0)); if (Is_exception_result (rv)) { nbd_internal_ocaml_exception_in_wrapper ("chunk", rv); CAMLreturnT (int, -1); } r = Int_val (rv); assert (r >= 0); CAMLreturnT (int, r); } static int chunk_wrapper (void *user_data, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error) { int ret = 0; caml_leave_blocking_section (); ret = chunk_wrapper_locked (user_data, subbuf, count, offset, status, error); caml_enter_blocking_section (); return ret; } /* Wrapper for completion callback. */ static int completion_wrapper_locked (void *user_data, int *error) { CAMLparam0 (); CAMLlocal1 (errorv); CAMLlocal2 (exn, rv); const struct user_data *data = user_data; int r; value args[1]; errorv = caml_alloc_tuple (1); Store_field (errorv, 0, Val_int (*error)); args[0] = errorv; rv = caml_callbackN_exn (data->fnv, 1, args); *error = Int_val (Field (errorv, 0)); if (Is_exception_result (rv)) { nbd_internal_ocaml_exception_in_wrapper ("completion", rv); CAMLreturnT (int, -1); } r = Int_val (rv); assert (r >= 0); CAMLreturnT (int, r); } static int completion_wrapper (void *user_data, int *error) { int ret = 0; caml_leave_blocking_section (); ret = completion_wrapper_locked (user_data, error); caml_enter_blocking_section (); return ret; } /* Wrapper for debug callback. */ static int debug_wrapper_locked (void *user_data, const char *context, const char *msg) { CAMLparam0 (); CAMLlocal2 (contextv, msgv); CAMLlocal2 (exn, rv); const struct user_data *data = user_data; int r; value args[2]; contextv = caml_copy_string (context); msgv = caml_copy_string (msg); args[0] = contextv; args[1] = msgv; rv = caml_callbackN_exn (data->fnv, 2, args); if (Is_exception_result (rv)) { nbd_internal_ocaml_exception_in_wrapper ("debug", rv); CAMLreturnT (int, -1); } r = Int_val (rv); assert (r >= 0); CAMLreturnT (int, r); } static int debug_wrapper (void *user_data, const char *context, const char *msg) { int ret = 0; caml_leave_blocking_section (); ret = debug_wrapper_locked (user_data, context, msg); caml_enter_blocking_section (); return ret; } /* Wrapper for extent callback. */ static int extent_wrapper_locked (void *user_data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error) { CAMLparam0 (); CAMLlocal4 (metacontextv, offsetv, entriesv, errorv); CAMLlocal2 (exn, rv); const struct user_data *data = user_data; int r; value args[4]; metacontextv = caml_copy_string (metacontext); offsetv = caml_copy_int64 (offset); entriesv = nbd_internal_ocaml_alloc_i64_from_u32_array ( entries, nr_entries ); errorv = caml_alloc_tuple (1); Store_field (errorv, 0, Val_int (*error)); args[0] = metacontextv; args[1] = offsetv; args[2] = entriesv; args[3] = errorv; rv = caml_callbackN_exn (data->fnv, 4, args); *error = Int_val (Field (errorv, 0)); if (Is_exception_result (rv)) { nbd_internal_ocaml_exception_in_wrapper ("extent", rv); CAMLreturnT (int, -1); } r = Int_val (rv); assert (r >= 0); CAMLreturnT (int, r); } static int extent_wrapper (void *user_data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error) { int ret = 0; caml_leave_blocking_section (); ret = extent_wrapper_locked (user_data, metacontext, offset, entries, nr_entries, error); caml_enter_blocking_section (); return ret; } /* Wrapper for extent64 callback. */ static int extent64_wrapper_locked (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { CAMLparam0 (); CAMLlocal4 (metacontextv, offsetv, entriesv, errorv); CAMLlocal2 (exn, rv); const struct user_data *data = user_data; int r; value args[4]; metacontextv = caml_copy_string (metacontext); offsetv = caml_copy_int64 (offset); entriesv = nbd_internal_ocaml_alloc_extent64_array ( entries, nr_entries ); errorv = caml_alloc_tuple (1); Store_field (errorv, 0, Val_int (*error)); args[0] = metacontextv; args[1] = offsetv; args[2] = entriesv; args[3] = errorv; rv = caml_callbackN_exn (data->fnv, 4, args); *error = Int_val (Field (errorv, 0)); if (Is_exception_result (rv)) { nbd_internal_ocaml_exception_in_wrapper ("extent64", rv); CAMLreturnT (int, -1); } r = Int_val (rv); assert (r >= 0); CAMLreturnT (int, r); } static int extent64_wrapper (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { int ret = 0; caml_leave_blocking_section (); ret = extent64_wrapper_locked (user_data, metacontext, offset, entries, nr_entries, error); caml_enter_blocking_section (); return ret; } /* Wrapper for list callback. */ static int list_wrapper_locked (void *user_data, const char *name, const char *description) { CAMLparam0 (); CAMLlocal2 (namev, descriptionv); CAMLlocal2 (exn, rv); const struct user_data *data = user_data; int r; value args[2]; namev = caml_copy_string (name); descriptionv = caml_copy_string (description); args[0] = namev; args[1] = descriptionv; rv = caml_callbackN_exn (data->fnv, 2, args); if (Is_exception_result (rv)) { nbd_internal_ocaml_exception_in_wrapper ("list", rv); CAMLreturnT (int, -1); } r = Int_val (rv); assert (r >= 0); CAMLreturnT (int, r); } static int list_wrapper (void *user_data, const char *name, const char *description) { int ret = 0; caml_leave_blocking_section (); ret = list_wrapper_locked (user_data, name, description); caml_enter_blocking_section (); return ret; } /* Wrapper for context callback. */ static int context_wrapper_locked (void *user_data, const char *name) { CAMLparam0 (); CAMLlocal1 (namev); CAMLlocal2 (exn, rv); const struct user_data *data = user_data; int r; value args[1]; namev = caml_copy_string (name); args[0] = namev; rv = caml_callbackN_exn (data->fnv, 1, args); if (Is_exception_result (rv)) { nbd_internal_ocaml_exception_in_wrapper ("context", rv); CAMLreturnT (int, -1); } r = Int_val (rv); assert (r >= 0); CAMLreturnT (int, r); } static int context_wrapper (void *user_data, const char *name) { int ret = 0; caml_leave_blocking_section (); ret = context_wrapper_locked (user_data, name); caml_enter_blocking_section (); return ret; } /* Convert OCaml TLS.t to int. */ static int TLS_val (value v) { /* NB: No allocation in this function, don't need to use * CAML* wrappers. */ int r = 0; if (Is_long (v)) { /* Int_val (v) is the index of the enum in the type * (eg. v = 0 => enum = TLS.DISABLE). * Convert it to the C representation. */ switch (Int_val (v)) { case 0: r = LIBNBD_TLS_DISABLE; break; case 1: r = LIBNBD_TLS_ALLOW; break; case 2: r = LIBNBD_TLS_REQUIRE; break; default: abort (); } } else r = Int_val (Field (v, 0)); /* UNKNOWN of int */ return r; } /* Convert int to OCaml TLS.t. */ static value Val_TLS (int i) { CAMLparam0 (); CAMLlocal1 (rv); switch (i) { case LIBNBD_TLS_DISABLE: rv = Val_int (0); break; case LIBNBD_TLS_ALLOW: rv = Val_int (1); break; case LIBNBD_TLS_REQUIRE: rv = Val_int (2); break; default: rv = caml_alloc (1, 0); /* UNKNOWN of int */ Store_field (rv, 0, Val_int (i)); } CAMLreturn (rv); } /* Convert OCaml SIZE.t to int. */ static int SIZE_val (value v) { /* NB: No allocation in this function, don't need to use * CAML* wrappers. */ int r = 0; if (Is_long (v)) { /* Int_val (v) is the index of the enum in the type * (eg. v = 0 => enum = SIZE.MINIMUM). * Convert it to the C representation. */ switch (Int_val (v)) { case 0: r = LIBNBD_SIZE_MINIMUM; break; case 1: r = LIBNBD_SIZE_PREFERRED; break; case 2: r = LIBNBD_SIZE_MAXIMUM; break; case 3: r = LIBNBD_SIZE_PAYLOAD; break; default: abort (); } } else r = Int_val (Field (v, 0)); /* UNKNOWN of int */ return r; } /* Convert OCaml CMD_FLAG.t list to uint32_t bitmask. */ static uint32_t CMD_FLAG_val (value v) { /* NB: No allocation in this function, don't need to use * CAML* wrappers. */ value i; unsigned bit; uint32_t r = 0; for (; v != Val_emptylist; v = Field (v, 1)) { i = Field (v, 0); /* i contains either the index of the flag in the type, * or UNKNOWN of int containing the bit position. * (eg. i = 0 => flag = CMD_FLAG.FUA). * Convert it to the C representation. */ if (Is_long (i)) { switch (Int_val (i)) { case 0: r |= LIBNBD_CMD_FLAG_FUA; break; case 1: r |= LIBNBD_CMD_FLAG_NO_HOLE; break; case 2: r |= LIBNBD_CMD_FLAG_DF; break; case 3: r |= LIBNBD_CMD_FLAG_REQ_ONE; break; case 4: r |= LIBNBD_CMD_FLAG_FAST_ZERO; break; case 5: r |= LIBNBD_CMD_FLAG_PAYLOAD_LEN; break; default: abort (); } } else { bit = Int_val (Field (i, 0)); /* UNKNOWN of int */ if (bit > 31) caml_invalid_argument ("bitmask value out of range"); else r |= 1u << bit; } } return r; } /* Convert OCaml HANDSHAKE_FLAG.t list to uint32_t bitmask. */ static uint32_t HANDSHAKE_FLAG_val (value v) { /* NB: No allocation in this function, don't need to use * CAML* wrappers. */ value i; unsigned bit; uint32_t r = 0; for (; v != Val_emptylist; v = Field (v, 1)) { i = Field (v, 0); /* i contains either the index of the flag in the type, * or UNKNOWN of int containing the bit position. * (eg. i = 0 => flag = HANDSHAKE_FLAG.FIXED_NEWSTYLE). * Convert it to the C representation. */ if (Is_long (i)) { switch (Int_val (i)) { case 0: r |= LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE; break; case 1: r |= LIBNBD_HANDSHAKE_FLAG_NO_ZEROES; break; default: abort (); } } else { bit = Int_val (Field (i, 0)); /* UNKNOWN of int */ if (bit > 31) caml_invalid_argument ("bitmask value out of range"); else r |= 1u << bit; } } return r; } /* Convert uint32_t bitmask to OCaml HANDSHAKE_FLAG.t list. */ static value Val_HANDSHAKE_FLAG (unsigned flags) { CAMLparam0 (); CAMLlocal3 (cdr, rv, v); int i; rv = Val_emptylist; for (i = 31; i >= 0; i--) { if (flags & (1 << i)) { switch (1 << i) { case LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE: v = Val_int (0); break; case LIBNBD_HANDSHAKE_FLAG_NO_ZEROES: v = Val_int (1); break; default: v = caml_alloc (1, 0); /* UNKNOWN of int */ Store_field (v, 0, Val_int (i)); } cdr = rv; rv = caml_alloc (2, 0); Store_field (rv, 0, v); Store_field (rv, 1, cdr); } } CAMLreturn (rv); } /* Convert OCaml STRICT.t list to uint32_t bitmask. */ static uint32_t STRICT_val (value v) { /* NB: No allocation in this function, don't need to use * CAML* wrappers. */ value i; unsigned bit; uint32_t r = 0; for (; v != Val_emptylist; v = Field (v, 1)) { i = Field (v, 0); /* i contains either the index of the flag in the type, * or UNKNOWN of int containing the bit position. * (eg. i = 0 => flag = STRICT.COMMANDS). * Convert it to the C representation. */ if (Is_long (i)) { switch (Int_val (i)) { case 0: r |= LIBNBD_STRICT_COMMANDS; break; case 1: r |= LIBNBD_STRICT_FLAGS; break; case 2: r |= LIBNBD_STRICT_BOUNDS; break; case 3: r |= LIBNBD_STRICT_ZERO_SIZE; break; case 4: r |= LIBNBD_STRICT_ALIGN; break; case 5: r |= LIBNBD_STRICT_PAYLOAD; break; case 6: r |= LIBNBD_STRICT_AUTO_FLAG; break; default: abort (); } } else { bit = Int_val (Field (i, 0)); /* UNKNOWN of int */ if (bit > 31) caml_invalid_argument ("bitmask value out of range"); else r |= 1u << bit; } } return r; } /* Convert uint32_t bitmask to OCaml STRICT.t list. */ static value Val_STRICT (unsigned flags) { CAMLparam0 (); CAMLlocal3 (cdr, rv, v); int i; rv = Val_emptylist; for (i = 31; i >= 0; i--) { if (flags & (1 << i)) { switch (1 << i) { case LIBNBD_STRICT_COMMANDS: v = Val_int (0); break; case LIBNBD_STRICT_FLAGS: v = Val_int (1); break; case LIBNBD_STRICT_BOUNDS: v = Val_int (2); break; case LIBNBD_STRICT_ZERO_SIZE: v = Val_int (3); break; case LIBNBD_STRICT_ALIGN: v = Val_int (4); break; case LIBNBD_STRICT_PAYLOAD: v = Val_int (5); break; case LIBNBD_STRICT_AUTO_FLAG: v = Val_int (6); break; default: v = caml_alloc (1, 0); /* UNKNOWN of int */ Store_field (v, 0, Val_int (i)); } cdr = rv; rv = caml_alloc (2, 0); Store_field (rv, 0, v); Store_field (rv, 1, cdr); } } CAMLreturn (rv); } /* Convert OCaml ALLOW_TRANSPORT.t list to uint32_t bitmask. */ static uint32_t ALLOW_TRANSPORT_val (value v) { /* NB: No allocation in this function, don't need to use * CAML* wrappers. */ value i; unsigned bit; uint32_t r = 0; for (; v != Val_emptylist; v = Field (v, 1)) { i = Field (v, 0); /* i contains either the index of the flag in the type, * or UNKNOWN of int containing the bit position. * (eg. i = 0 => flag = ALLOW_TRANSPORT.TCP). * Convert it to the C representation. */ if (Is_long (i)) { switch (Int_val (i)) { case 0: r |= LIBNBD_ALLOW_TRANSPORT_TCP; break; case 1: r |= LIBNBD_ALLOW_TRANSPORT_UNIX; break; case 2: r |= LIBNBD_ALLOW_TRANSPORT_VSOCK; break; default: abort (); } } else { bit = Int_val (Field (i, 0)); /* UNKNOWN of int */ if (bit > 31) caml_invalid_argument ("bitmask value out of range"); else r |= 1u << bit; } } return r; } /* Convert OCaml SHUTDOWN.t list to uint32_t bitmask. */ static uint32_t SHUTDOWN_val (value v) { /* NB: No allocation in this function, don't need to use * CAML* wrappers. */ value i; unsigned bit; uint32_t r = 0; for (; v != Val_emptylist; v = Field (v, 1)) { i = Field (v, 0); /* i contains either the index of the flag in the type, * or UNKNOWN of int containing the bit position. * (eg. i = 0 => flag = SHUTDOWN.ABANDON_PENDING). * Convert it to the C representation. */ if (Is_long (i)) { switch (Int_val (i)) { case 0: r |= LIBNBD_SHUTDOWN_ABANDON_PENDING; break; default: abort (); } } else { bit = Int_val (Field (i, 0)); /* UNKNOWN of int */ if (bit > 31) caml_invalid_argument ("bitmask value out of range"); else r |= 1u << bit; } } return r; } value nbd_internal_ocaml_nbd_set_debug (value hv, value debugv) { CAMLparam2 (hv, debugv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_debug" ); bool debug = Bool_val (debugv); int r; caml_enter_blocking_section (); r = nbd_set_debug (h, debug); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_debug (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_debug" ); int r; caml_enter_blocking_section (); r = nbd_get_debug (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_debug_callback (value hv, value debugv) { CAMLparam2 (hv, debugv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_debug_callback" ); nbd_debug_callback debug_callback; struct user_data *debug_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ debug_user_data->fnv = debugv; caml_register_generational_global_root (&debug_user_data->fnv); debug_callback.callback = debug_wrapper; debug_callback.user_data = debug_user_data; debug_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_set_debug_callback (h, debug_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_clear_debug_callback (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.clear_debug_callback" ); int r; caml_enter_blocking_section (); r = nbd_clear_debug_callback (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_stats_bytes_sent (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.stats_bytes_sent" ); uint64_t r; caml_enter_blocking_section (); r = nbd_stats_bytes_sent (h); caml_leave_blocking_section (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_stats_chunks_sent (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.stats_chunks_sent" ); uint64_t r; caml_enter_blocking_section (); r = nbd_stats_chunks_sent (h); caml_leave_blocking_section (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_stats_bytes_received (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.stats_bytes_received" ); uint64_t r; caml_enter_blocking_section (); r = nbd_stats_bytes_received (h); caml_leave_blocking_section (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_stats_chunks_received (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.stats_chunks_received" ); uint64_t r; caml_enter_blocking_section (); r = nbd_stats_chunks_received (h); caml_leave_blocking_section (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_handle_name (value hv, value handle_namev) { CAMLparam2 (hv, handle_namev); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_handle_name" ); const char *handle_name = String_val (handle_namev); int r; caml_enter_blocking_section (); r = nbd_set_handle_name (h, handle_name); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_handle_name (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_handle_name" ); char * r; caml_enter_blocking_section (); r = nbd_get_handle_name (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); free (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_private_data (value hv, value private_datav) { CAMLparam2 (hv, private_datav); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_private_data" ); unsigned private_data = Int_val (private_datav); uintptr_t r; caml_enter_blocking_section (); r = nbd_set_private_data (h, private_data); caml_leave_blocking_section (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_private_data (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_private_data" ); uintptr_t r; caml_enter_blocking_section (); r = nbd_get_private_data (h); caml_leave_blocking_section (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_export_name (value hv, value export_namev) { CAMLparam2 (hv, export_namev); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_export_name" ); const char *export_name = String_val (export_namev); int r; caml_enter_blocking_section (); r = nbd_set_export_name (h, export_name); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_export_name (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_export_name" ); char * r; caml_enter_blocking_section (); r = nbd_get_export_name (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); free (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_request_block_size (value hv, value requestv) { CAMLparam2 (hv, requestv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_request_block_size" ); bool request = Bool_val (requestv); int r; caml_enter_blocking_section (); r = nbd_set_request_block_size (h, request); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_request_block_size (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_request_block_size" ); int r; caml_enter_blocking_section (); r = nbd_get_request_block_size (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_full_info (value hv, value requestv) { CAMLparam2 (hv, requestv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_full_info" ); bool request = Bool_val (requestv); int r; caml_enter_blocking_section (); r = nbd_set_full_info (h, request); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_full_info (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_full_info" ); int r; caml_enter_blocking_section (); r = nbd_get_full_info (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_canonical_export_name (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_canonical_export_name" ); char * r; caml_enter_blocking_section (); r = nbd_get_canonical_export_name (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); free (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_export_description (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_export_description" ); char * r; caml_enter_blocking_section (); r = nbd_get_export_description (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); free (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_tls (value hv, value tlsv) { CAMLparam2 (hv, tlsv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_tls" ); int tls = TLS_val (tlsv); int r; caml_enter_blocking_section (); r = nbd_set_tls (h, tls); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_tls (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_tls" ); int r; caml_enter_blocking_section (); r = nbd_get_tls (h); caml_leave_blocking_section (); rv = Val_TLS (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_tls_negotiated (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_tls_negotiated" ); int r; caml_enter_blocking_section (); r = nbd_get_tls_negotiated (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_tls_certificates (value hv, value dirv) { CAMLparam2 (hv, dirv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_tls_certificates" ); const char *dir = String_val (dirv); int r; caml_enter_blocking_section (); r = nbd_set_tls_certificates (h, dir); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_tls_verify_peer (value hv, value verifyv) { CAMLparam2 (hv, verifyv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_tls_verify_peer" ); bool verify = Bool_val (verifyv); int r; caml_enter_blocking_section (); r = nbd_set_tls_verify_peer (h, verify); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_tls_verify_peer (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_tls_verify_peer" ); int r; caml_enter_blocking_section (); r = nbd_get_tls_verify_peer (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_tls_username (value hv, value usernamev) { CAMLparam2 (hv, usernamev); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_tls_username" ); const char *username = String_val (usernamev); int r; caml_enter_blocking_section (); r = nbd_set_tls_username (h, username); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_tls_username (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_tls_username" ); char * r; caml_enter_blocking_section (); r = nbd_get_tls_username (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); free (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_tls_psk_file (value hv, value filenamev) { CAMLparam2 (hv, filenamev); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_tls_psk_file" ); const char *filename = String_val (filenamev); int r; caml_enter_blocking_section (); r = nbd_set_tls_psk_file (h, filename); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_request_extended_headers (value hv, value requestv) { CAMLparam2 (hv, requestv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_request_extended_headers" ); bool request = Bool_val (requestv); int r; caml_enter_blocking_section (); r = nbd_set_request_extended_headers (h, request); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_request_extended_headers (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_request_extended_headers" ); int r; caml_enter_blocking_section (); r = nbd_get_request_extended_headers (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_extended_headers_negotiated (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_extended_headers_negotiated" ); int r; caml_enter_blocking_section (); r = nbd_get_extended_headers_negotiated (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_request_structured_replies (value hv, value requestv) { CAMLparam2 (hv, requestv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_request_structured_replies" ); bool request = Bool_val (requestv); int r; caml_enter_blocking_section (); r = nbd_set_request_structured_replies (h, request); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_request_structured_replies (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_request_structured_replies" ); int r; caml_enter_blocking_section (); r = nbd_get_request_structured_replies (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_structured_replies_negotiated (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_structured_replies_negotiated" ); int r; caml_enter_blocking_section (); r = nbd_get_structured_replies_negotiated (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_request_meta_context (value hv, value requestv) { CAMLparam2 (hv, requestv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_request_meta_context" ); bool request = Bool_val (requestv); int r; caml_enter_blocking_section (); r = nbd_set_request_meta_context (h, request); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_request_meta_context (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_request_meta_context" ); int r; caml_enter_blocking_section (); r = nbd_get_request_meta_context (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_handshake_flags (value hv, value flagsv) { CAMLparam2 (hv, flagsv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_handshake_flags" ); uint32_t flags = HANDSHAKE_FLAG_val (flagsv); int r; caml_enter_blocking_section (); r = nbd_set_handshake_flags (h, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_handshake_flags (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_handshake_flags" ); uint32_t r; caml_enter_blocking_section (); r = nbd_get_handshake_flags (h); caml_leave_blocking_section (); rv = Val_HANDSHAKE_FLAG (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_pread_initialize (value hv, value requestv) { CAMLparam2 (hv, requestv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_pread_initialize" ); bool request = Bool_val (requestv); int r; caml_enter_blocking_section (); r = nbd_set_pread_initialize (h, request); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_pread_initialize (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_pread_initialize" ); int r; caml_enter_blocking_section (); r = nbd_get_pread_initialize (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_strict_mode (value hv, value flagsv) { CAMLparam2 (hv, flagsv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_strict_mode" ); uint32_t flags = STRICT_val (flagsv); int r; caml_enter_blocking_section (); r = nbd_set_strict_mode (h, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_strict_mode (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_strict_mode" ); uint32_t r; caml_enter_blocking_section (); r = nbd_get_strict_mode (h); caml_leave_blocking_section (); rv = Val_STRICT (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_opt_mode (value hv, value enablev) { CAMLparam2 (hv, enablev); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_opt_mode" ); bool enable = Bool_val (enablev); int r; caml_enter_blocking_section (); r = nbd_set_opt_mode (h, enable); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_opt_mode (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_opt_mode" ); int r; caml_enter_blocking_section (); r = nbd_get_opt_mode (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_go (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_go" ); int r; caml_enter_blocking_section (); r = nbd_opt_go (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_abort (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_abort" ); int r; caml_enter_blocking_section (); r = nbd_opt_abort (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_starttls (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_starttls" ); int r; caml_enter_blocking_section (); r = nbd_opt_starttls (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_extended_headers (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_extended_headers" ); int r; caml_enter_blocking_section (); r = nbd_opt_extended_headers (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_structured_reply (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_structured_reply" ); int r; caml_enter_blocking_section (); r = nbd_opt_structured_reply (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_list (value hv, value listv) { CAMLparam2 (hv, listv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_list" ); nbd_list_callback list_callback; struct user_data *list_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ list_user_data->fnv = listv; caml_register_generational_global_root (&list_user_data->fnv); list_callback.callback = list_wrapper; list_callback.user_data = list_user_data; list_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_opt_list (h, list_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_info (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_info" ); int r; caml_enter_blocking_section (); r = nbd_opt_info (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_list_meta_context (value hv, value contextv) { CAMLparam2 (hv, contextv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_list_meta_context" ); nbd_context_callback context_callback; struct user_data *context_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ context_user_data->fnv = contextv; caml_register_generational_global_root (&context_user_data->fnv); context_callback.callback = context_wrapper; context_callback.user_data = context_user_data; context_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_opt_list_meta_context (h, context_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_list_meta_context_queries (value hv, value queriesv, value contextv) { CAMLparam3 (hv, queriesv, contextv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_list_meta_context_queries" ); char **queries = (char **)nbd_internal_ocaml_string_list (queriesv); nbd_context_callback context_callback; struct user_data *context_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ context_user_data->fnv = contextv; caml_register_generational_global_root (&context_user_data->fnv); context_callback.callback = context_wrapper; context_callback.user_data = context_user_data; context_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_opt_list_meta_context_queries (h, queries, context_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); free (queries); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_set_meta_context (value hv, value contextv) { CAMLparam2 (hv, contextv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_set_meta_context" ); nbd_context_callback context_callback; struct user_data *context_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ context_user_data->fnv = contextv; caml_register_generational_global_root (&context_user_data->fnv); context_callback.callback = context_wrapper; context_callback.user_data = context_user_data; context_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_opt_set_meta_context (h, context_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_opt_set_meta_context_queries (value hv, value queriesv, value contextv) { CAMLparam3 (hv, queriesv, contextv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.opt_set_meta_context_queries" ); char **queries = (char **)nbd_internal_ocaml_string_list (queriesv); nbd_context_callback context_callback; struct user_data *context_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ context_user_data->fnv = contextv; caml_register_generational_global_root (&context_user_data->fnv); context_callback.callback = context_wrapper; context_callback.user_data = context_user_data; context_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_opt_set_meta_context_queries (h, queries, context_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); free (queries); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_add_meta_context (value hv, value namev) { CAMLparam2 (hv, namev); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.add_meta_context" ); const char *name = String_val (namev); int r; caml_enter_blocking_section (); r = nbd_add_meta_context (h, name); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_nr_meta_contexts (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_nr_meta_contexts" ); ssize_t r; caml_enter_blocking_section (); r = nbd_get_nr_meta_contexts (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_meta_context (value hv, value iv) { CAMLparam2 (hv, iv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_meta_context" ); size_t i = Int_val (iv); char * r; caml_enter_blocking_section (); r = nbd_get_meta_context (h, i); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); free (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_clear_meta_contexts (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.clear_meta_contexts" ); int r; caml_enter_blocking_section (); r = nbd_clear_meta_contexts (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_uri_allow_transports (value hv, value maskv) { CAMLparam2 (hv, maskv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_uri_allow_transports" ); uint32_t mask = ALLOW_TRANSPORT_val (maskv); int r; caml_enter_blocking_section (); r = nbd_set_uri_allow_transports (h, mask); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_uri_allow_tls (value hv, value tlsv) { CAMLparam2 (hv, tlsv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_uri_allow_tls" ); int tls = TLS_val (tlsv); int r; caml_enter_blocking_section (); r = nbd_set_uri_allow_tls (h, tls); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_uri_allow_local_file (value hv, value allowv) { CAMLparam2 (hv, allowv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_uri_allow_local_file" ); bool allow = Bool_val (allowv); int r; caml_enter_blocking_section (); r = nbd_set_uri_allow_local_file (h, allow); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_connect_uri (value hv, value uriv) { CAMLparam2 (hv, uriv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.connect_uri" ); const char *uri = String_val (uriv); int r; caml_enter_blocking_section (); r = nbd_connect_uri (h, uri); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_connect_unix (value hv, value unixsocketv) { CAMLparam2 (hv, unixsocketv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.connect_unix" ); const char *unixsocket = String_val (unixsocketv); int r; caml_enter_blocking_section (); r = nbd_connect_unix (h, unixsocket); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_connect_vsock (value hv, value cidv, value portv) { CAMLparam3 (hv, cidv, portv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.connect_vsock" ); int64_t cid64 = Int64_val (cidv); if (cid64 < 0 || (uint64_t)cid64 > UINT32_MAX) caml_invalid_argument ("'cid' out of range"); uint32_t cid = (uint32_t)cid64; int64_t port64 = Int64_val (portv); if (port64 < 0 || (uint64_t)port64 > UINT32_MAX) caml_invalid_argument ("'port' out of range"); uint32_t port = (uint32_t)port64; int r; caml_enter_blocking_section (); r = nbd_connect_vsock (h, cid, port); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_connect_tcp (value hv, value hostnamev, value portv) { CAMLparam3 (hv, hostnamev, portv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.connect_tcp" ); const char *hostname = String_val (hostnamev); const char *port = String_val (portv); int r; caml_enter_blocking_section (); r = nbd_connect_tcp (h, hostname, port); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_connect_socket (value hv, value sockv) { CAMLparam2 (hv, sockv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.connect_socket" ); /* OCaml Unix.file_descr is just an int, at least on Unix. */ int sock = Int_val (sockv); int r; caml_enter_blocking_section (); r = nbd_connect_socket (h, sock); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_connect_command (value hv, value argvv) { CAMLparam2 (hv, argvv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.connect_command" ); char **argv = (char **)nbd_internal_ocaml_string_list (argvv); int r; caml_enter_blocking_section (); r = nbd_connect_command (h, argv); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; free (argv); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_connect_systemd_socket_activation (value hv, value argvv) { CAMLparam2 (hv, argvv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.connect_systemd_socket_activation" ); char **argv = (char **)nbd_internal_ocaml_string_list (argvv); int r; caml_enter_blocking_section (); r = nbd_connect_systemd_socket_activation (h, argv); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; free (argv); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_set_socket_activation_name (value hv, value socket_namev) { CAMLparam2 (hv, socket_namev); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.set_socket_activation_name" ); const char *socket_name = String_val (socket_namev); int r; caml_enter_blocking_section (); r = nbd_set_socket_activation_name (h, socket_name); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_socket_activation_name (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_socket_activation_name" ); char * r; caml_enter_blocking_section (); r = nbd_get_socket_activation_name (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); free (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_is_read_only (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.is_read_only" ); int r; caml_enter_blocking_section (); r = nbd_is_read_only (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_flush (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_flush" ); int r; caml_enter_blocking_section (); r = nbd_can_flush (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_fua (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_fua" ); int r; caml_enter_blocking_section (); r = nbd_can_fua (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_is_rotational (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.is_rotational" ); int r; caml_enter_blocking_section (); r = nbd_is_rotational (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_trim (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_trim" ); int r; caml_enter_blocking_section (); r = nbd_can_trim (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_zero (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_zero" ); int r; caml_enter_blocking_section (); r = nbd_can_zero (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_fast_zero (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_fast_zero" ); int r; caml_enter_blocking_section (); r = nbd_can_fast_zero (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_block_status_payload (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_block_status_payload" ); int r; caml_enter_blocking_section (); r = nbd_can_block_status_payload (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_df (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_df" ); int r; caml_enter_blocking_section (); r = nbd_can_df (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_multi_conn (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_multi_conn" ); int r; caml_enter_blocking_section (); r = nbd_can_multi_conn (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_cache (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_cache" ); int r; caml_enter_blocking_section (); r = nbd_can_cache (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_can_meta_context (value hv, value metacontextv) { CAMLparam2 (hv, metacontextv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.can_meta_context" ); const char *metacontext = String_val (metacontextv); int r; caml_enter_blocking_section (); r = nbd_can_meta_context (h, metacontext); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_protocol (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_protocol" ); const char * r; caml_enter_blocking_section (); r = nbd_get_protocol (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_size (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_size" ); int64_t r; caml_enter_blocking_section (); r = nbd_get_size (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_block_size (value hv, value size_typev) { CAMLparam2 (hv, size_typev); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_block_size" ); int size_type = SIZE_val (size_typev); int64_t r; caml_enter_blocking_section (); r = nbd_get_block_size (h, size_type); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_pread (value flagsv, value hv, value bufv, value offsetv) { CAMLparam4 (flagsv, hv, bufv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.pread" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; void *buf = Bytes_val (bufv); size_t count = caml_string_length (bufv); uint64_t offset = Int64_val (offsetv); int r; caml_enter_blocking_section (); r = nbd_pread (h, buf, count, offset, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_pread_structured (value flagsv, value hv, value bufv, value offsetv, value chunkv) { CAMLparam5 (flagsv, hv, bufv, offsetv, chunkv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.pread_structured" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; void *buf = Bytes_val (bufv); size_t count = caml_string_length (bufv); uint64_t offset = Int64_val (offsetv); nbd_chunk_callback chunk_callback; struct user_data *chunk_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ chunk_user_data->fnv = chunkv; caml_register_generational_global_root (&chunk_user_data->fnv); chunk_callback.callback = chunk_wrapper; chunk_callback.user_data = chunk_user_data; chunk_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_pread_structured (h, buf, count, offset, chunk_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_pwrite (value flagsv, value hv, value bufv, value offsetv) { CAMLparam4 (flagsv, hv, bufv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.pwrite" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; const void *buf = Bytes_val (bufv); size_t count = caml_string_length (bufv); uint64_t offset = Int64_val (offsetv); int r; caml_enter_blocking_section (); r = nbd_pwrite (h, buf, count, offset, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_shutdown (value flagsv, value hv) { CAMLparam2 (flagsv, hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.shutdown" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of SHUTDOWN.t ] */ flags = SHUTDOWN_val (Field (flagsv, 0)); else /* None */ flags = 0; int r; caml_enter_blocking_section (); r = nbd_shutdown (h, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_flush (value flagsv, value hv) { CAMLparam2 (flagsv, hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.flush" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; int r; caml_enter_blocking_section (); r = nbd_flush (h, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_trim (value flagsv, value hv, value countv, value offsetv) { CAMLparam4 (flagsv, hv, countv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.trim" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); int r; caml_enter_blocking_section (); r = nbd_trim (h, count, offset, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_cache (value flagsv, value hv, value countv, value offsetv) { CAMLparam4 (flagsv, hv, countv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.cache" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); int r; caml_enter_blocking_section (); r = nbd_cache (h, count, offset, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_zero (value flagsv, value hv, value countv, value offsetv) { CAMLparam4 (flagsv, hv, countv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.zero" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); int r; caml_enter_blocking_section (); r = nbd_zero (h, count, offset, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_block_status (value flagsv, value hv, value countv, value offsetv, value extentv) { CAMLparam5 (flagsv, hv, countv, offsetv, extentv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.block_status" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); nbd_extent_callback extent_callback; struct user_data *extent_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ extent_user_data->fnv = extentv; caml_register_generational_global_root (&extent_user_data->fnv); extent_callback.callback = extent_wrapper; extent_callback.user_data = extent_user_data; extent_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_block_status (h, count, offset, extent_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_block_status_64 (value flagsv, value hv, value countv, value offsetv, value extent64v) { CAMLparam5 (flagsv, hv, countv, offsetv, extent64v); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.block_status_64" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); nbd_extent64_callback extent64_callback; struct user_data *extent64_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ extent64_user_data->fnv = extent64v; caml_register_generational_global_root (&extent64_user_data->fnv); extent64_callback.callback = extent64_wrapper; extent64_callback.user_data = extent64_user_data; extent64_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_block_status_64 (h, count, offset, extent64_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_block_status_filter (value flagsv, value hv, value countv, value offsetv, value contextsv, value extent64v) { CAMLparam5 (flagsv, hv, countv, offsetv, contextsv); CAMLxparam1 (extent64v); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.block_status_filter" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); char **contexts = (char **)nbd_internal_ocaml_string_list (contextsv); nbd_extent64_callback extent64_callback; struct user_data *extent64_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ extent64_user_data->fnv = extent64v; caml_register_generational_global_root (&extent64_user_data->fnv); extent64_callback.callback = extent64_wrapper; extent64_callback.user_data = extent64_user_data; extent64_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_block_status_filter (h, count, offset, contexts, extent64_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; free (contexts); CAMLreturn (rv); } /* Byte-code compat function because this method has > 5 parameters. */ value nbd_internal_ocaml_nbd_block_status_filter_byte (value *argv, int argn) { return nbd_internal_ocaml_nbd_block_status_filter (argv[0], argv[1], argv[2], argv[3], argv[4], argv[5]); } value nbd_internal_ocaml_nbd_poll (value hv, value timeoutv) { CAMLparam2 (hv, timeoutv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.poll" ); int timeout = Int_val (timeoutv); int r; caml_enter_blocking_section (); r = nbd_poll (h, timeout); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_poll2 (value hv, value fdv, value timeoutv) { CAMLparam3 (hv, fdv, timeoutv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.poll2" ); /* OCaml Unix.file_descr is just an int, at least on Unix. */ int fd = Int_val (fdv); int timeout = Int_val (timeoutv); int r; caml_enter_blocking_section (); r = nbd_poll2 (h, fd, timeout); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_connect (value hv, value addrv) { CAMLparam2 (hv, addrv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_connect" ); struct sockaddr_storage addr_storage; struct sockaddr *addr = (struct sockaddr *)&addr_storage; socklen_t addrlen; nbd_internal_unix_sockaddr_to_sa (addrv, &addr_storage, &addrlen); int r; caml_enter_blocking_section (); r = nbd_aio_connect (h, addr, addrlen); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_connect_uri (value hv, value uriv) { CAMLparam2 (hv, uriv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_connect_uri" ); const char *uri = String_val (uriv); int r; caml_enter_blocking_section (); r = nbd_aio_connect_uri (h, uri); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_connect_unix (value hv, value unixsocketv) { CAMLparam2 (hv, unixsocketv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_connect_unix" ); const char *unixsocket = String_val (unixsocketv); int r; caml_enter_blocking_section (); r = nbd_aio_connect_unix (h, unixsocket); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_connect_vsock (value hv, value cidv, value portv) { CAMLparam3 (hv, cidv, portv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_connect_vsock" ); int64_t cid64 = Int64_val (cidv); if (cid64 < 0 || (uint64_t)cid64 > UINT32_MAX) caml_invalid_argument ("'cid' out of range"); uint32_t cid = (uint32_t)cid64; int64_t port64 = Int64_val (portv); if (port64 < 0 || (uint64_t)port64 > UINT32_MAX) caml_invalid_argument ("'port' out of range"); uint32_t port = (uint32_t)port64; int r; caml_enter_blocking_section (); r = nbd_aio_connect_vsock (h, cid, port); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_connect_tcp (value hv, value hostnamev, value portv) { CAMLparam3 (hv, hostnamev, portv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_connect_tcp" ); const char *hostname = String_val (hostnamev); const char *port = String_val (portv); int r; caml_enter_blocking_section (); r = nbd_aio_connect_tcp (h, hostname, port); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_connect_socket (value hv, value sockv) { CAMLparam2 (hv, sockv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_connect_socket" ); /* OCaml Unix.file_descr is just an int, at least on Unix. */ int sock = Int_val (sockv); int r; caml_enter_blocking_section (); r = nbd_aio_connect_socket (h, sock); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_connect_command (value hv, value argvv) { CAMLparam2 (hv, argvv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_connect_command" ); char **argv = (char **)nbd_internal_ocaml_string_list (argvv); int r; caml_enter_blocking_section (); r = nbd_aio_connect_command (h, argv); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; free (argv); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_connect_systemd_socket_activation (value hv, value argvv) { CAMLparam2 (hv, argvv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_connect_systemd_socket_activation" ); char **argv = (char **)nbd_internal_ocaml_string_list (argvv); int r; caml_enter_blocking_section (); r = nbd_aio_connect_systemd_socket_activation (h, argv); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; free (argv); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_go (value completionv, value hv) { CAMLparam2 (completionv, hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_go" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_go (h, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_abort (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_abort" ); int r; caml_enter_blocking_section (); r = nbd_aio_opt_abort (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_starttls (value completionv, value hv) { CAMLparam2 (completionv, hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_starttls" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_starttls (h, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_extended_headers (value completionv, value hv) { CAMLparam2 (completionv, hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_extended_headers" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_extended_headers (h, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_structured_reply (value completionv, value hv) { CAMLparam2 (completionv, hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_structured_reply" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_structured_reply (h, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_list (value completionv, value hv, value listv) { CAMLparam3 (completionv, hv, listv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_list" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; nbd_list_callback list_callback; struct user_data *list_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ list_user_data->fnv = listv; caml_register_generational_global_root (&list_user_data->fnv); list_callback.callback = list_wrapper; list_callback.user_data = list_user_data; list_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_list (h, list_callback, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_info (value completionv, value hv) { CAMLparam2 (completionv, hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_info" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_info (h, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_list_meta_context (value completionv, value hv, value contextv) { CAMLparam3 (completionv, hv, contextv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_list_meta_context" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; nbd_context_callback context_callback; struct user_data *context_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ context_user_data->fnv = contextv; caml_register_generational_global_root (&context_user_data->fnv); context_callback.callback = context_wrapper; context_callback.user_data = context_user_data; context_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_list_meta_context (h, context_callback, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_list_meta_context_queries (value completionv, value hv, value queriesv, value contextv) { CAMLparam4 (completionv, hv, queriesv, contextv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_list_meta_context_queries" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; char **queries = (char **)nbd_internal_ocaml_string_list (queriesv); nbd_context_callback context_callback; struct user_data *context_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ context_user_data->fnv = contextv; caml_register_generational_global_root (&context_user_data->fnv); context_callback.callback = context_wrapper; context_callback.user_data = context_user_data; context_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_list_meta_context_queries (h, queries, context_callback, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); free (queries); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_set_meta_context (value completionv, value hv, value contextv) { CAMLparam3 (completionv, hv, contextv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_set_meta_context" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; nbd_context_callback context_callback; struct user_data *context_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ context_user_data->fnv = contextv; caml_register_generational_global_root (&context_user_data->fnv); context_callback.callback = context_wrapper; context_callback.user_data = context_user_data; context_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_set_meta_context (h, context_callback, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_opt_set_meta_context_queries (value completionv, value hv, value queriesv, value contextv) { CAMLparam4 (completionv, hv, queriesv, contextv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_opt_set_meta_context_queries" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; char **queries = (char **)nbd_internal_ocaml_string_list (queriesv); nbd_context_callback context_callback; struct user_data *context_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ context_user_data->fnv = contextv; caml_register_generational_global_root (&context_user_data->fnv); context_callback.callback = context_wrapper; context_callback.user_data = context_user_data; context_callback.free = free_user_data; int r; caml_enter_blocking_section (); r = nbd_aio_opt_set_meta_context_queries (h, queries, context_callback, completion_callback); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); free (queries); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_pread (value completionv, value flagsv, value hv, value bufv, value offsetv) { CAMLparam5 (completionv, flagsv, hv, bufv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_pread" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; struct caml_ba_array *buf_ba = Caml_ba_array_val (bufv); void *buf = (void *) buf_ba->data; size_t count = buf_ba->dim[0]; uint64_t offset = Int64_val (offsetv); completion_user_data->bufv = bufv; caml_register_generational_global_root (&completion_user_data->bufv); int64_t r; caml_enter_blocking_section (); r = nbd_aio_pread (h, buf, count, offset, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_pread_structured (value completionv, value flagsv, value hv, value bufv, value offsetv, value chunkv) { CAMLparam5 (completionv, flagsv, hv, bufv, offsetv); CAMLxparam1 (chunkv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_pread_structured" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; struct caml_ba_array *buf_ba = Caml_ba_array_val (bufv); void *buf = (void *) buf_ba->data; size_t count = buf_ba->dim[0]; uint64_t offset = Int64_val (offsetv); nbd_chunk_callback chunk_callback; struct user_data *chunk_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ chunk_user_data->fnv = chunkv; caml_register_generational_global_root (&chunk_user_data->fnv); chunk_callback.callback = chunk_wrapper; chunk_callback.user_data = chunk_user_data; chunk_callback.free = free_user_data; completion_user_data->bufv = bufv; caml_register_generational_global_root (&completion_user_data->bufv); int64_t r; caml_enter_blocking_section (); r = nbd_aio_pread_structured (h, buf, count, offset, chunk_callback, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } /* Byte-code compat function because this method has > 5 parameters. */ value nbd_internal_ocaml_nbd_aio_pread_structured_byte (value *argv, int argn) { return nbd_internal_ocaml_nbd_aio_pread_structured (argv[0], argv[1], argv[2], argv[3], argv[4], argv[5]); } value nbd_internal_ocaml_nbd_aio_pwrite (value completionv, value flagsv, value hv, value bufv, value offsetv) { CAMLparam5 (completionv, flagsv, hv, bufv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_pwrite" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; struct caml_ba_array *buf_ba = Caml_ba_array_val (bufv); const void *buf = (const void *) buf_ba->data; size_t count = buf_ba->dim[0]; uint64_t offset = Int64_val (offsetv); completion_user_data->bufv = bufv; caml_register_generational_global_root (&completion_user_data->bufv); int64_t r; caml_enter_blocking_section (); r = nbd_aio_pwrite (h, buf, count, offset, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_disconnect (value flagsv, value hv) { CAMLparam2 (flagsv, hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_disconnect" ); uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; int r; caml_enter_blocking_section (); r = nbd_aio_disconnect (h, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_flush (value completionv, value flagsv, value hv) { CAMLparam3 (completionv, flagsv, hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_flush" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; int64_t r; caml_enter_blocking_section (); r = nbd_aio_flush (h, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_trim (value completionv, value flagsv, value hv, value countv, value offsetv) { CAMLparam5 (completionv, flagsv, hv, countv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_trim" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); int64_t r; caml_enter_blocking_section (); r = nbd_aio_trim (h, count, offset, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_cache (value completionv, value flagsv, value hv, value countv, value offsetv) { CAMLparam5 (completionv, flagsv, hv, countv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_cache" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); int64_t r; caml_enter_blocking_section (); r = nbd_aio_cache (h, count, offset, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_zero (value completionv, value flagsv, value hv, value countv, value offsetv) { CAMLparam5 (completionv, flagsv, hv, countv, offsetv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_zero" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); int64_t r; caml_enter_blocking_section (); r = nbd_aio_zero (h, count, offset, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_block_status (value completionv, value flagsv, value hv, value countv, value offsetv, value extentv) { CAMLparam5 (completionv, flagsv, hv, countv, offsetv); CAMLxparam1 (extentv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_block_status" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); nbd_extent_callback extent_callback; struct user_data *extent_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ extent_user_data->fnv = extentv; caml_register_generational_global_root (&extent_user_data->fnv); extent_callback.callback = extent_wrapper; extent_callback.user_data = extent_user_data; extent_callback.free = free_user_data; int64_t r; caml_enter_blocking_section (); r = nbd_aio_block_status (h, count, offset, extent_callback, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } /* Byte-code compat function because this method has > 5 parameters. */ value nbd_internal_ocaml_nbd_aio_block_status_byte (value *argv, int argn) { return nbd_internal_ocaml_nbd_aio_block_status (argv[0], argv[1], argv[2], argv[3], argv[4], argv[5]); } value nbd_internal_ocaml_nbd_aio_block_status_64 (value completionv, value flagsv, value hv, value countv, value offsetv, value extent64v) { CAMLparam5 (completionv, flagsv, hv, countv, offsetv); CAMLxparam1 (extent64v); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_block_status_64" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); nbd_extent64_callback extent64_callback; struct user_data *extent64_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ extent64_user_data->fnv = extent64v; caml_register_generational_global_root (&extent64_user_data->fnv); extent64_callback.callback = extent64_wrapper; extent64_callback.user_data = extent64_user_data; extent64_callback.free = free_user_data; int64_t r; caml_enter_blocking_section (); r = nbd_aio_block_status_64 (h, count, offset, extent64_callback, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } /* Byte-code compat function because this method has > 5 parameters. */ value nbd_internal_ocaml_nbd_aio_block_status_64_byte (value *argv, int argn) { return nbd_internal_ocaml_nbd_aio_block_status_64 (argv[0], argv[1], argv[2], argv[3], argv[4], argv[5]); } value nbd_internal_ocaml_nbd_aio_block_status_filter (value completionv, value flagsv, value hv, value countv, value offsetv, value contextsv, value extent64v) { CAMLparam5 (completionv, flagsv, hv, countv, offsetv); CAMLxparam2 (contextsv, extent64v); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_block_status_filter" ); nbd_completion_callback completion_callback = {0}; struct user_data *completion_user_data = alloc_user_data (); if (completionv != Val_int (0)) { /* Some closure */ /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ completion_user_data->fnv = Field (completionv, 0); caml_register_generational_global_root (&completion_user_data->fnv); completion_callback.callback = completion_wrapper; } completion_callback.user_data = completion_user_data; completion_callback.free = free_user_data; uint32_t flags; if (flagsv != Val_int (0)) /* Some [ list of CMD_FLAG.t ] */ flags = CMD_FLAG_val (Field (flagsv, 0)); else /* None */ flags = 0; uint64_t count = Int64_val (countv); uint64_t offset = Int64_val (offsetv); char **contexts = (char **)nbd_internal_ocaml_string_list (contextsv); nbd_extent64_callback extent64_callback; struct user_data *extent64_user_data = alloc_user_data (); /* The function may save a reference to the closure, so we * must treat it as a possible GC root. */ extent64_user_data->fnv = extent64v; caml_register_generational_global_root (&extent64_user_data->fnv); extent64_callback.callback = extent64_wrapper; extent64_callback.user_data = extent64_user_data; extent64_callback.free = free_user_data; int64_t r; caml_enter_blocking_section (); r = nbd_aio_block_status_filter (h, count, offset, contexts, extent64_callback, completion_callback, flags); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); free (contexts); CAMLreturn (rv); } /* Byte-code compat function because this method has > 5 parameters. */ value nbd_internal_ocaml_nbd_aio_block_status_filter_byte (value *argv, int argn) { return nbd_internal_ocaml_nbd_aio_block_status_filter (argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6]); } value nbd_internal_ocaml_nbd_aio_get_fd (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_get_fd" ); int r; caml_enter_blocking_section (); r = nbd_aio_get_fd (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_get_direction (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_get_direction" ); unsigned r; caml_enter_blocking_section (); r = nbd_aio_get_direction (h); caml_leave_blocking_section (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_notify_read (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_notify_read" ); int r; caml_enter_blocking_section (); r = nbd_aio_notify_read (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_notify_write (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_notify_write" ); int r; caml_enter_blocking_section (); r = nbd_aio_notify_write (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_is_created (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_is_created" ); int r; caml_enter_blocking_section (); r = nbd_aio_is_created (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_is_connecting (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_is_connecting" ); int r; caml_enter_blocking_section (); r = nbd_aio_is_connecting (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_is_negotiating (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_is_negotiating" ); int r; caml_enter_blocking_section (); r = nbd_aio_is_negotiating (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_is_ready (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_is_ready" ); int r; caml_enter_blocking_section (); r = nbd_aio_is_ready (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_is_processing (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_is_processing" ); int r; caml_enter_blocking_section (); r = nbd_aio_is_processing (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_is_dead (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_is_dead" ); int r; caml_enter_blocking_section (); r = nbd_aio_is_dead (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_is_closed (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_is_closed" ); int r; caml_enter_blocking_section (); r = nbd_aio_is_closed (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_command_completed (value hv, value cookiev) { CAMLparam2 (hv, cookiev); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_command_completed" ); uint64_t cookie = Int64_val (cookiev); int r; caml_enter_blocking_section (); r = nbd_aio_command_completed (h, cookie); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_peek_command_completed (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_peek_command_completed" ); int64_t r; caml_enter_blocking_section (); r = nbd_aio_peek_command_completed (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = caml_copy_int64 (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_aio_in_flight (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.aio_in_flight" ); int r; caml_enter_blocking_section (); r = nbd_aio_in_flight (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_int (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_connection_state (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.connection_state" ); const char * r; caml_enter_blocking_section (); r = nbd_connection_state (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_package_name (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_package_name" ); const char * r; caml_enter_blocking_section (); r = nbd_get_package_name (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_version (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_version" ); const char * r; caml_enter_blocking_section (); r = nbd_get_version (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_kill_subprocess (value hv, value signumv) { CAMLparam2 (hv, signumv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.kill_subprocess" ); int signum = Int_val (signumv); int r; caml_enter_blocking_section (); r = nbd_kill_subprocess (h, signum); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_unit; CAMLreturn (rv); } value nbd_internal_ocaml_nbd_supports_tls (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.supports_tls" ); int r; caml_enter_blocking_section (); r = nbd_supports_tls (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_supports_vsock (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.supports_vsock" ); int r; caml_enter_blocking_section (); r = nbd_supports_vsock (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_supports_uri (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.supports_uri" ); int r; caml_enter_blocking_section (); r = nbd_supports_uri (h); caml_leave_blocking_section (); if (r == -1) nbd_internal_ocaml_raise_error (); rv = Val_bool (r); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_get_uri (value hv) { CAMLparam1 (hv); CAMLlocal1 (rv); struct nbd_handle *h = NBD_val (hv); if (h == NULL) nbd_internal_ocaml_raise_closed ( "NBD.get_uri" ); char * r; caml_enter_blocking_section (); r = nbd_get_uri (h); caml_leave_blocking_section (); if (r == NULL) nbd_internal_ocaml_raise_error (); rv = caml_copy_string (r); free (r); CAMLreturn (rv); } libnbd-1.20.3/ocaml/nbd-c.h0000644000175000017500000000617214577570472010767 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Various shared definitions for OCaml bindings. */ #ifndef LIBNBD_NBD_C_H #define LIBNBD_NBD_C_H #include #include #include #include #include #include #include /* Workaround for OCaml < 4.06.0 */ #ifndef Bytes_val #define Bytes_val(x) String_val (x) #endif /* Wrapper around caml_alloc_custom_mem for pre-2019 versions of OCaml. */ #ifndef HAVE_CAML_ALLOC_CUSTOM_MEM #define caml_alloc_custom_mem(ops, obj, size) \ caml_alloc_custom ((ops), (obj), 0, 1) #endif /* Replacement if caml_alloc_initialized_string is missing, added * to OCaml runtime in 2017. */ #ifndef HAVE_CAML_ALLOC_INITIALIZED_STRING static inline value caml_alloc_initialized_string (mlsize_t len, const char *p) { value sv = caml_alloc_string (len); memcpy (String_val (sv), p, len); return sv; } #endif extern void nbd_internal_ocaml_raise_error (void) Noreturn; extern void nbd_internal_ocaml_raise_closed (const char *func) Noreturn; extern const char **nbd_internal_ocaml_string_list (value); extern value nbd_internal_ocaml_alloc_i64_from_u32_array (uint32_t *, size_t); extern value nbd_internal_ocaml_alloc_extent64_array (nbd_extent *, size_t); extern void nbd_internal_unix_sockaddr_to_sa (value, struct sockaddr_storage *, socklen_t *); extern void nbd_internal_ocaml_exception_in_wrapper (const char *, value); /* Extract an NBD handle from an OCaml heap value. */ #define NBD_val(v) (*((struct nbd_handle **)Data_custom_val (v))) static struct custom_operations libnbd_custom_operations = { "libnbd_custom_operations", custom_finalize_default, custom_compare_default, custom_hash_default, custom_serialize_default, custom_deserialize_default, custom_compare_ext_default, }; /* Embed an NBD handle in an OCaml heap value. */ static inline value Val_nbd (struct nbd_handle *h) { CAMLparam0 (); CAMLlocal1 (rv); /* We don't have a good way to estimate the size of the C handle, * but on 2019-08-17, just the handle (not even including any linked * buffers or structures) was 4720 bytes. */ rv = caml_alloc_custom_mem (&libnbd_custom_operations, sizeof (struct nbd_handle *), 5000); NBD_val (rv) = h; CAMLreturn (rv); } #endif /* LIBNBD_NBD_C_H */ libnbd-1.20.3/ocaml/buffer.c0000644000175000017500000000341614616437241011234 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include "nbd-c.h" /* Copy an NBD persistent buffer to an OCaml bytes. */ value nbd_internal_ocaml_buffer_to_bytes (value bufv) { CAMLparam1 (bufv); CAMLlocal1 (rv); struct caml_ba_array *buf = Caml_ba_array_val (bufv); uint8_t *data = (uint8_t *)buf->data; size_t len = (size_t)buf->dim[0]; rv = caml_alloc_string (len); memcpy (Bytes_val (rv), data, len); CAMLreturn (rv); } /* Copy an OCaml bytes into an NBD persistent buffer. */ value nbd_internal_ocaml_buffer_of_bytes (value bytesv, value bufv) { CAMLparam2 (bytesv, bufv); struct caml_ba_array *buf = Caml_ba_array_val (bufv); uint8_t *data = (uint8_t *)buf->data; size_t len = (size_t)buf->dim[0]; memcpy (data, Bytes_val (bytesv), len); CAMLreturn (Val_unit); } libnbd-1.20.3/ocaml/handle.c0000644000175000017500000000307414536536161011220 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include "nbd-c.h" value nbd_internal_ocaml_nbd_create (value unitv) { CAMLparam1 (unitv); CAMLlocal1 (rv); struct nbd_handle *h; h = nbd_create (); if (h == NULL) nbd_internal_ocaml_raise_error (); rv = Val_nbd (h); CAMLreturn (rv); } value nbd_internal_ocaml_nbd_close (value hv) { CAMLparam1 (hv); struct nbd_handle *h = NBD_val (hv); if (h) { /* So we don't double-free. */ NBD_val (hv) = NULL; caml_enter_blocking_section (); nbd_close (h); caml_leave_blocking_section (); } CAMLreturn (Val_unit); } libnbd-1.20.3/ocaml/helpers.c0000644000175000017500000001232014616437241011417 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Miscellaneous helper functions used in the OCaml bindings. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "nbd-c.h" /* NB: @@noalloc function */ value nbd_internal_code_of_unix_error (value error) { return Val_int (code_of_unix_error (error)); } void nbd_internal_ocaml_raise_error (void) { CAMLparam0 (); CAMLlocal3 (sv, errv, ev); value v[2]; const char *msg; int err; msg = nbd_get_error (); err = nbd_get_errno (); if (msg) sv = caml_copy_string (msg); else sv = caml_copy_string ("no error message available"); /* Convert raw C errno to OCaml Unix.error, if available. */ if (err == 0) { errv = Val_int (0); /* None */ } else { ev = unix_error_of_code (err); errv = caml_alloc (1, 0); /* Some ev */ Field (errv, 0) = ev; } v[0] = sv; v[1] = errv; caml_raise_with_args (*caml_named_value ("nbd_internal_ocaml_error"), 2, v); CAMLnoreturn; } void nbd_internal_ocaml_raise_closed (const char *func) { CAMLparam0 (); CAMLlocal1 (sv); sv = caml_copy_string (func); caml_raise_with_arg (*caml_named_value ("nbd_internal_ocaml_closed"), sv); CAMLnoreturn; } /* The caller should free the array, but NOT the strings, since the * strings point to OCaml strings. */ const char ** nbd_internal_ocaml_string_list (value ssv) { CAMLparam1 (ssv); CAMLlocal1 (sv); size_t i, len; const char **r; sv = ssv; for (len = 0; sv != Val_emptylist; sv = Field (sv, 1)) len++; r = malloc (sizeof (const char *) * (len+1)); if (r == NULL) caml_raise_out_of_memory (); sv = ssv; for (i = 0; sv != Val_emptylist; sv = Field (sv, 1), i++) r[i] = String_val (Field (sv, 0)); r[len] = NULL; CAMLreturnT (const char **, r); } value nbd_internal_ocaml_alloc_i64_from_u32_array (uint32_t *a, size_t len) { CAMLparam0 (); CAMLlocal2 (v, rv); size_t i; rv = caml_alloc (len, 0); for (i = 0; i < len; ++i) { v = caml_copy_int64 (a[i]); Store_field (rv, i, v); } CAMLreturn (rv); } value nbd_internal_ocaml_alloc_extent64_array (nbd_extent *a, size_t len) { CAMLparam0 (); CAMLlocal3 (s, v, rv); size_t i; rv = caml_alloc (len, 0); for (i = 0; i < len; ++i) { s = caml_alloc (2, 0); assert (a[i].length <= INT64_MAX); /* API ensures size fits in 63 bits */ v = caml_copy_int64 (a[i].length); Store_field (s, 0, v); v = caml_copy_int64 (a[i].flags); Store_field (s, 1, v); Store_field (rv, i, s); } CAMLreturn (rv); } /* Convert a Unix.sockaddr to a C struct sockaddr. */ void nbd_internal_unix_sockaddr_to_sa (value sockaddrv, struct sockaddr_storage *ss, socklen_t *len) { CAMLparam1 (sockaddrv); union sock_addr_union saddr_u; socklen_param_type sl; /* this is really an int or socklen_t */ memset (ss, 0, sizeof *ss); #ifdef HAVE_CAML_UNIX_GET_SOCKADDR caml_unix_get_sockaddr (sockaddrv, &saddr_u, &sl); #else /* OCaml <= 4.14 exports this unnamespaced symbol. */ get_sockaddr (sockaddrv, &saddr_u, &sl); #endif assert (sl <= sizeof *ss); memcpy (ss, &saddr_u, sl); *len = sl; CAMLreturn0; } /* Common code when an exception is raised in an OCaml callback. * * We handle Assert_failure specially by abort()-ing. Other * exceptions are printed to make sure we don't lose information. */ void nbd_internal_ocaml_exception_in_wrapper (const char *cbname, value rv) { CAMLparam1 (rv); CAMLlocal1 (exn); const char *exn_name; char *s; exn = Extract_exception (rv); s = caml_format_exception (exn); fprintf (stderr, "libnbd: %s: uncaught OCaml exception: %s\n", cbname, s); free (s); /* For how we're getting the exception name, see: * https://github.com/libguestfs/libguestfs/blob/5d94be2583d557cfc7f8a8cfee7988abfa45a3f8/daemon/daemon-c.c#L40 */ if (Tag_val (Field (exn, 0)) == String_tag) exn_name = String_val (Field (exn, 0)); else exn_name = String_val (Field (Field (exn, 0), 0)); /* If the exception is fatal (like Assert_failure) then abort. */ if (exn_name && strcmp (exn_name, "Assert_failure") == 0) abort (); CAMLreturn0; } libnbd-1.20.3/ocaml/NBD.mli0000444000175000017500000044463314636624347010744 (* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (** OCaml bindings for libnbd. For full documentation see libnbd-ocaml(3) and libnbd(3). For examples written in OCaml see the libnbd source code [ocaml/examples] subdirectory. *) exception Error of string * Unix.error option (** Exception thrown when an API call fails. The string is the error message, and the int is the {!Unix.error} (if available). *) exception Closed of string (** Exception thrown if you call a closed handle. *) type cookie = int64 type extent = int64 * int64 (** Length and flags of an extent in {!block_status_64} callback. *) module TLS : sig type t = | DISABLE | ALLOW | REQUIRE | UNKNOWN of int end module SIZE : sig type t = | MINIMUM | PREFERRED | MAXIMUM | PAYLOAD | UNKNOWN of int end module CMD_FLAG : sig type t = | FUA | NO_HOLE | DF | REQ_ONE | FAST_ZERO | PAYLOAD_LEN | UNKNOWN of int val mask : t list end module HANDSHAKE_FLAG : sig type t = | FIXED_NEWSTYLE | NO_ZEROES | UNKNOWN of int val mask : t list end module STRICT : sig type t = | COMMANDS | FLAGS | BOUNDS | ZERO_SIZE | ALIGN | PAYLOAD | AUTO_FLAG | UNKNOWN of int val mask : t list end module ALLOW_TRANSPORT : sig type t = | TCP | UNIX | VSOCK | UNKNOWN of int val mask : t list end module SHUTDOWN : sig type t = | ABANDON_PENDING | UNKNOWN of int val mask : t list end val aio_direction_read : int32 val aio_direction_write : int32 val aio_direction_both : int32 val read_data : int32 val read_hole : int32 val read_error : int32 val namespace_base : string val context_base_allocation : string val state_hole : int32 val state_zero : int32 val namespace_qemu : string val context_qemu_dirty_bitmap : string val state_dirty : int32 val context_qemu_allocation_depth : string module Buffer : sig type t = (char, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t (** A buffer that persists across calls, used in {!aio_pread}, {!aio_pwrite} and similar. In libnbd ≤ 1.18 this was a specially implemented type. This was inefficient as zero copy was not possible. In libnbd ≥ 1.20 this is just an alias for a {!Bigarray}, so you can use functions from {!Bigarray.Array1} directly if you prefer. This also allows zero copy. This type is compatible with the {{:https://v3.ocaml.org/p/bigstring/latest}[bigstring]} and {{:https://v3.ocaml.org/p/bigstringaf/latest}[bigstringaf]} libraries. *) val alloc : int -> t (** Allocate an uninitialized buffer. The parameter is the size in bytes. In libnbd ≥ 1.20 this is an alias for {!Bigarray.Array1.create}. *) val to_bytes : t -> bytes (** Copy buffer to an OCaml [bytes] object. In libnbd ≥ 1.20 you can read from the bigarray directly to avoid copying if you want. *) val to_string : t -> string (** Same as {!to_bytes} but returns a [string] instead. *) val of_bytes : bytes -> t (** Copy an OCaml [bytes] object to a newly allocated buffer. In libnbd ≥ 1.20 you can write to the bigarray directly to avoid copying if you want. *) val of_string : string -> t (** Same as {!of_bytes} but takes a [string] instead. *) val size : t -> int (** Return the size of the buffer. In libnbd ≥ 1.20 this is an alias for {!Bigarray.Array1.dim}. *) end (** Persistent buffer used in AIO calls. *) val errno_of_unix_error : Unix.error -> int (** Return the raw C errno corresponding to a {!Unix.error}. This can be used in callbacks to update the [int ref] parameter. *) type t (** The handle. *) val create : unit -> t (** Create a new handle. *) val close : t -> unit (** Close a handle. Handles can also be closed by the garbage collector when they become unreachable. This call is used only if you want to force the handle to close now and reclaim resources immediately. *) val with_handle : (t -> 'a) -> 'a (** Wrapper around {!create}. It calls the function parameter with a newly created handle, and ensures that {!close} is always called even if the function throws an exception. Use this when it is essential that the handle is closed in order to free up external resources in a timely manner; for example if running the server as a subprocess and you want to ensure that the subprocess is always killed; or if you need to disconnect from the server before continuing with another operation. *) val set_debug : t -> bool -> unit (** [NBD.set_debug t debug] set or clear the debug flag Set or clear the debug flag. When debugging is enabled, debugging messages from the library are printed to stderr, unless a debugging callback has been defined too (see nbd_set_debug_callback(3)) in which case they are sent to that function. This flag defaults to false on newly created handles, except if "LIBNBD_DEBUG=1" is set in the environment in which case it defaults to true. *) val get_debug : t -> bool (** [NBD.get_debug t] return the state of the debug flag Return the state of the debug flag on this handle. *) val set_debug_callback : t -> (string -> string -> int) -> unit (** [NBD.set_debug_callback t debug] set the debug callback Set the debug callback. This function is called when the library emits debug messages, when debugging is enabled on a handle. The callback parameters are "user_data" passed to this function, the name of the libnbd function emitting the debug message ("context"), and the message itself ("msg"). If no debug callback is set on a handle then messages are printed on "stderr". The callback should not call "nbd_*" APIs on the same handle since it can be called while holding the handle lock and will cause a deadlock. *) val clear_debug_callback : t -> unit (** [NBD.clear_debug_callback t] clear the debug callback Remove the debug callback if one was previously associated with the handle (with nbd_set_debug_callback(3)). If no callback was associated this does nothing. *) val stats_bytes_sent : t -> int64 (** [NBD.stats_bytes_sent t] statistics of bytes sent over connection so far Return the number of bytes that the client has sent to the server. This tracks the plaintext bytes utilized by the NBD protocol; it may differ from the number of bytes actually sent over the connection, particularly when TLS is in use. *) val stats_chunks_sent : t -> int64 (** [NBD.stats_chunks_sent t] statistics of chunks sent over connection so far Return the number of chunks that the client has sent to the server, where a chunk is a group of bytes delineated by a magic number that cannot be further subdivided without breaking the protocol. This number does not necessarily relate to the number of API calls made, nor to the number of TCP packets sent over the connection. *) val stats_bytes_received : t -> int64 (** [NBD.stats_bytes_received t] statistics of bytes received over connection so far Return the number of bytes that the client has received from the server. This tracks the plaintext bytes utilized by the NBD protocol; it may differ from the number of bytes actually received over the connection, particularly when TLS is in use. *) val stats_chunks_received : t -> int64 (** [NBD.stats_chunks_received t] statistics of chunks received over connection so far Return the number of chunks that the client has received from the server, where a chunk is a group of bytes delineated by a magic number that cannot be further subdivided without breaking the protocol. This number does not necessarily relate to the number of API calls made, nor to the number of TCP packets received over the connection. *) val set_handle_name : t -> string -> unit (** [NBD.set_handle_name t handle_name] set the handle name Handles have a name which is unique within the current process. The handle name is used in debug output. Handle names are normally generated automatically and have the form "nbd1", "nbd2", etc., but you can optionally use this call to give the handles a name which is meaningful for your application to make debugging output easier to understand. *) val get_handle_name : t -> string (** [NBD.get_handle_name t] get the handle name Get the name of the handle. If it was previously set by calling nbd_set_handle_name(3) then this returns the name that was set. Otherwise it will return a generic name like "nbd1", "nbd2", etc. *) val set_private_data : t -> int -> int (** [NBD.set_private_data t private_data] set the per-handle private data Handles contain a private data field for applications to use for any purpose. When calling libnbd from C, the type of this field is "uintptr_t" so it can be used to store an unsigned integer or a pointer. In non-C bindings it can be used to store an unsigned integer. This function sets the value of this field and returns the old value (or 0 if it was not previously set). *) val get_private_data : t -> int (** [NBD.get_private_data t] get the per-handle private data Return the value of the private data field set previously by a call to nbd_set_private_data(3) (or 0 if it was not previously set). *) val set_export_name : t -> string -> unit (** [NBD.set_export_name t export_name] set the export name For servers which require an export name or can serve different content on different exports, set the "export_name" to connect to. The default is the empty string "". This is only relevant when connecting to servers using the newstyle protocol as the oldstyle protocol did not support export names. The NBD protocol limits export names to 4096 bytes, but servers may not support the full length. The encoding of export names is always UTF-8. When option mode is not in use, the export name must be set before beginning a connection. However, when nbd_set_opt_mode(3) has enabled option mode, it is possible to change the export name prior to nbd_opt_go(3). In particular, the use of nbd_opt_list(3) during negotiation can be used to determine a name the server is likely to accept, and nbd_opt_info(3) can be used to learn details about an export before connecting. This call may be skipped if using nbd_connect_uri(3) to connect to a URI that includes an export name. *) val get_export_name : t -> string (** [NBD.get_export_name t] get the export name Get the export name associated with the handle. This is the name that libnbd requests; see nbd_get_canonical_export_name(3) for determining if the server has a different canonical name for the given export (most common when requesting the default export name of an empty string "") *) val set_request_block_size : t -> bool -> unit (** [NBD.set_request_block_size t request] control whether NBD_OPT_GO requests block size By default, when connecting to an export, libnbd requests that the server report any block size restrictions. The NBD protocol states that a server may supply block sizes regardless of whether the client requests them, and libnbd will report those block sizes (see nbd_get_block_size(3)); conversely, if a client does not request block sizes, the server may reject the connection instead of dealing with a client sending unaligned requests. This function makes it possible to test server behavior by emulating older clients. Note that even when block size is requested, the server is not obligated to provide any. Furthermore, if block sizes are provided (whether or not the client requested them), libnbd enforces alignment to those sizes unless nbd_set_strict_mode(3) is used to bypass client-side safety checks. *) val get_request_block_size : t -> bool (** [NBD.get_request_block_size t] see if NBD_OPT_GO requests block size Return the state of the block size request flag on this handle. *) val set_full_info : t -> bool -> unit (** [NBD.set_full_info t request] control whether NBD_OPT_GO requests extra details By default, when connecting to an export, libnbd only requests the details it needs to service data operations. The NBD protocol says that a server can supply optional information, such as a canonical name of the export (see nbd_get_canonical_export_name(3)) or a description of the export (see nbd_get_export_description(3)), but that a hint from the client makes it more likely for this extra information to be provided. This function controls whether libnbd will provide that hint. Note that even when full info is requested, the server is not obligated to reply with all information that libnbd requested. Similarly, libnbd will ignore any optional server information that libnbd has not yet been taught to recognize. Furthermore, the hint to request block sizes is independently controlled via nbd_set_request_block_size(3). *) val get_full_info : t -> bool (** [NBD.get_full_info t] see if NBD_OPT_GO requests extra details Return the state of the full info request flag on this handle. *) val get_canonical_export_name : t -> string (** [NBD.get_canonical_export_name t] return the canonical export name, if the server has one The NBD protocol permits a server to report an optional canonical export name, which may differ from the client's request (as set by nbd_set_export_name(3) or nbd_connect_uri(3)). This function accesses any name returned by the server; it may be the same as the client request, but is more likely to differ when the client requested a connection to the default export name (an empty string ""). Some servers are unlikely to report a canonical name unless the client specifically hinted about wanting it, via nbd_set_full_info(3). *) val get_export_description : t -> string (** [NBD.get_export_description t] return the export description, if the server has one The NBD protocol permits a server to report an optional export description. This function reports any description returned by the server. Some servers are unlikely to report a description unless the client specifically hinted about wanting it, via nbd_set_full_info(3). For qemu-nbd(8), a description is set with *-D*. *) val set_tls : t -> TLS.t -> unit (** [NBD.set_tls t tls] enable or require TLS (authentication and encryption) Enable or require TLS (authenticated and encrypted connections) to the NBD server. The possible settings are: "LIBNBD_TLS_DISABLE" Disable TLS. (The default setting, unless using nbd_connect_uri(3) with a URI that requires TLS). This setting is also necessary if you use nbd_set_opt_mode(3) and want to interact in plaintext with a server that implements the NBD protocol's "SELECTIVETLS" mode, prior to enabling TLS with nbd_opt_starttls(3). Most NBD servers with TLS support prefer the NBD protocol's "FORCEDTLS" mode, so this sort of manual interaction tends to be useful mainly during integration testing. "LIBNBD_TLS_ALLOW" Enable TLS if possible. This option is insecure (or best effort) in that in some cases it will fall back to an unencrypted and/or unauthenticated connection if TLS could not be established. Use "LIBNBD_TLS_REQUIRE" below if the connection must be encrypted. Some servers will drop the connection if TLS fails so fallback may not be possible. "LIBNBD_TLS_REQUIRE" Require an encrypted and authenticated TLS connection. Always fail to connect if the connection is not encrypted and authenticated. As well as calling this you may also need to supply the path to the certificates directory (nbd_set_tls_certificates(3)), the username (nbd_set_tls_username(3)) and/or the Pre-Shared Keys (PSK) file (nbd_set_tls_psk_file(3)). For now, when using nbd_connect_uri(3), any URI query parameters related to TLS are not handled automatically. Setting the level higher than zero will fail if libnbd was not compiled against gnutls; you can test whether this is the case with nbd_supports_tls(3). *) val get_tls : t -> TLS.t (** [NBD.get_tls t] get the TLS request setting Get the TLS request setting. Note: If you want to find out if TLS was actually negotiated on a particular connection use nbd_get_tls_negotiated(3) instead. *) val get_tls_negotiated : t -> bool (** [NBD.get_tls_negotiated t] find out if TLS was negotiated on a connection After connecting you may call this to find out if the connection is using TLS. This is normally useful only if you set the TLS request mode to "LIBNBD_TLS_ALLOW" (see nbd_set_tls(3)), because in this mode we try to use TLS but fall back to unencrypted if it was not available. This function will tell you if TLS was negotiated or not. In "LIBNBD_TLS_REQUIRE" mode (the most secure) the connection would have failed if TLS could not be negotiated. With "LIBNBD_TLS_DISABLE" mode, TLS is not tried automatically; but if the NBD server uses the less-common "SELECTIVETLS" mode, this function reports whether a manual nbd_opt_starttls(3) enabled TLS or if the connection is still plaintext. *) val set_tls_certificates : t -> string -> unit (** [NBD.set_tls_certificates t dir] set the path to the TLS certificates directory Set the path to the TLS certificates directory. If not set and TLS is used then a compiled in default is used. For root this is "/etc/pki/libnbd/". For non-root this is "$HOME/.pki/libnbd" and "$HOME/.config/pki/libnbd". If none of these directories can be found then the system trusted CAs are used. This function may be called regardless of whether TLS is supported, but will have no effect unless nbd_set_tls(3) is also used to request or require TLS. *) val set_tls_verify_peer : t -> bool -> unit (** [NBD.set_tls_verify_peer t verify] set whether we verify the identity of the server Set this flag to control whether libnbd will verify the identity of the server from the server's certificate and the certificate authority. This defaults to true when connecting to TCP servers using TLS certificate authentication, and false otherwise. This function may be called regardless of whether TLS is supported, but will have no effect unless nbd_set_tls(3) is also used to request or require TLS. *) val get_tls_verify_peer : t -> bool (** [NBD.get_tls_verify_peer t] get whether we verify the identity of the server Get the verify peer flag. *) val set_tls_username : t -> string -> unit (** [NBD.set_tls_username t username] set the TLS username Set the TLS client username. This is used if authenticating with PSK over TLS is enabled. If not set then the local username is used. This function may be called regardless of whether TLS is supported, but will have no effect unless nbd_set_tls(3) is also used to request or require TLS. *) val get_tls_username : t -> string (** [NBD.get_tls_username t] get the current TLS username Get the current TLS username. *) val set_tls_psk_file : t -> string -> unit (** [NBD.set_tls_psk_file t filename] set the TLS Pre-Shared Keys (PSK) filename Set the TLS Pre-Shared Keys (PSK) filename. This is used if trying to authenticate to the server using with a pre-shared key. There is no default so if this is not set then PSK authentication cannot be used to connect to the server. This function may be called regardless of whether TLS is supported, but will have no effect unless nbd_set_tls(3) is also used to request or require TLS. *) val set_request_extended_headers : t -> bool -> unit (** [NBD.set_request_extended_headers t request] control use of extended headers By default, libnbd tries to negotiate extended headers with the server, as this protocol extension permits the use of 64-bit zero, trim, and block status actions. However, for integration testing, it can be useful to clear this flag rather than find a way to alter the server to fail the negotiation request. For backwards compatibility, the setting of this knob is ignored if nbd_set_request_structured_replies(3) is also set to false, since the use of extended headers implies structured replies. *) val get_request_extended_headers : t -> bool (** [NBD.get_request_extended_headers t] see if extended headers are attempted Return the state of the request extended headers flag on this handle. Note: If you want to find out if extended headers were actually negotiated on a particular connection use nbd_get_extended_headers_negotiated(3) instead. *) val get_extended_headers_negotiated : t -> bool (** [NBD.get_extended_headers_negotiated t] see if extended headers are in use After connecting you may call this to find out if the connection is using extended headers. Note that this setting is sticky; this can return true even after a second nbd_opt_extended_headers(3) returns false because the server detected a duplicate request. When extended headers are not in use, commands are limited to a 32-bit length, even when the libnbd API uses a 64-bit parameter to express the length. But even when extended headers are supported, the server may enforce other limits, visible through nbd_get_block_size(3). Note that when extended headers are negotiated, you should prefer the use of nbd_block_status_64(3) instead of nbd_block_status(3) if any of the meta contexts you requested via nbd_add_meta_context(3) might return 64-bit status values; however, all of the well-known meta contexts covered by current "LIBNBD_CONTEXT_*" constants only return 32-bit status. *) val set_request_structured_replies : t -> bool -> unit (** [NBD.set_request_structured_replies t request] control use of structured replies By default, libnbd tries to negotiate structured replies with the server, as this protocol extension must be in use before nbd_can_meta_context(3) or nbd_can_df(3) can return true. However, for integration testing, it can be useful to clear this flag rather than find a way to alter the server to fail the negotiation request. It is also useful to set this to false prior to using nbd_set_opt_mode(3) if it is desired to control when to send nbd_opt_structured_reply(3) during negotiation. Note that setting this knob to false also disables any automatic request for extended headers. *) val get_request_structured_replies : t -> bool (** [NBD.get_request_structured_replies t] see if structured replies are attempted Return the state of the request structured replies flag on this handle. Note: If you want to find out if structured replies were actually negotiated on a particular connection use nbd_get_structured_replies_negotiated(3) instead. *) val get_structured_replies_negotiated : t -> bool (** [NBD.get_structured_replies_negotiated t] see if structured replies are in use After connecting you may call this to find out if the connection is using structured replies. Note that this setting is sticky; this can return true even after a second nbd_opt_structured_reply(3) returns false because the server detected a duplicate request. Note that if the connection negotiates extended headers, this function returns true (as extended headers imply structured replies) even if no explicit request for structured replies was attempted. *) val set_request_meta_context : t -> bool -> unit (** [NBD.set_request_meta_context t request] control whether connect automatically requests meta contexts This function controls whether the act of connecting to an export (all "nbd_connect_*" calls when nbd_set_opt_mode(3) is false, or nbd_opt_go(3) and nbd_opt_info(3) when option mode is enabled) will also try to issue NBD_OPT_SET_META_CONTEXT when the server supports structured replies or extended headers and any contexts were registered by nbd_add_meta_context(3). The default setting is true; however the extra step of negotiating meta contexts is not always desirable: performing both info and go on the same export works without needing to re-negotiate contexts on the second call; integration testing of other servers may benefit from manual invocation of nbd_opt_set_meta_context(3) at other times in the negotiation sequence; and even when using just nbd_opt_info(3), it can be faster to collect the server's results by relying on the callback function passed to nbd_opt_list_meta_context(3) than a series of post-process calls to nbd_can_meta_context(3). Note that this control has no effect if the server does not negotiate structured replies or extended headers, or if the client did not request any contexts via nbd_add_meta_context(3). Setting this control to false may cause nbd_block_status(3) to fail. *) val get_request_meta_context : t -> bool (** [NBD.get_request_meta_context t] see if connect automatically requests meta contexts Return the state of the automatic meta context request flag on this handle. *) val set_handshake_flags : t -> HANDSHAKE_FLAG.t list -> unit (** [NBD.set_handshake_flags t flags] control use of handshake flags By default, libnbd tries to negotiate all possible handshake flags that are also supported by the server, since omitting a handshake flag can prevent the use of other functionality such as TLS encryption or structured replies. However, for integration testing, it can be useful to reduce the set of flags supported by the client to test that a particular server can handle various clients that were compliant to older versions of the NBD specification. The "flags" argument is a bitmask, including zero or more of the following handshake flags: "LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE" = 1 The server gracefully handles unknown option requests from the client, rather than disconnecting. Without this flag, a client cannot safely request to use extensions such as TLS encryption or structured replies, as the request may cause an older server to drop the connection. "LIBNBD_HANDSHAKE_FLAG_NO_ZEROES" = 2 If the client is forced to use "NBD_OPT_EXPORT_NAME" instead of the preferred "NBD_OPT_GO", this flag allows the server to send fewer all-zero padding bytes over the connection. For convenience, the constant "LIBNBD_HANDSHAKE_FLAG_MASK" is available to describe all flags supported by this build of libnbd. Future NBD extensions may add further flags, which in turn may be enabled by default in newer libnbd. As such, when attempting to disable only one specific bit, it is wiser to first call nbd_get_handshake_flags(3) and modify that value, rather than blindly setting a constant value. *) val get_handshake_flags : t -> HANDSHAKE_FLAG.t list (** [NBD.get_handshake_flags t] see which handshake flags are supported Return the state of the handshake flags on this handle. When the handle has not yet completed a connection (see nbd_aio_is_created(3)), this returns the flags that the client is willing to use, provided the server also advertises those flags. After the connection is ready (see nbd_aio_is_ready(3)), this returns the flags that were actually agreed on between the server and client. If the NBD protocol defines new handshake flags, then the return value from a newer library version may include bits that were undefined at the time of compilation. *) val set_pread_initialize : t -> bool -> unit (** [NBD.set_pread_initialize t request] control whether libnbd pre-initializes read buffers By default, libnbd will pre-initialize the contents of a buffer passed to calls such as nbd_pread(3) to all zeroes prior to checking for any other errors, so that even if a client application passed in an uninitialized buffer but fails to check for errors, it will not result in a potential security risk caused by an accidental leak of prior heap contents (see CVE-2022-0485 in libnbd-security(3) for an example of a security hole in an application built against an earlier version of libnbd that lacked consistent pre-initialization). However, for a client application that has audited that an uninitialized buffer is never dereferenced, or which performs its own pre-initialization, libnbd's sanitization efforts merely pessimize performance (although the time spent in pre-initialization may pale in comparison to time spent waiting on network packets). Calling this function with "request" set to false tells libnbd to skip the buffer initialization step in read commands. *) val get_pread_initialize : t -> bool (** [NBD.get_pread_initialize t] see whether libnbd pre-initializes read buffers Return whether libnbd performs a pre-initialization of a buffer passed to nbd_pread(3) and similar to all zeroes, as set by nbd_set_pread_initialize(3). *) val set_strict_mode : t -> STRICT.t list -> unit (** [NBD.set_strict_mode t flags] control how strictly to follow NBD protocol By default, libnbd tries to detect requests that would trigger undefined behavior in the NBD protocol, and rejects them client side without causing any network traffic, rather than risking undefined server behavior. However, for integration testing, it can be handy to relax the strictness of libnbd, to coerce it into sending such requests over the network for testing the robustness of the server in dealing with such traffic. The "flags" argument is a bitmask, including zero or more of the following strictness flags: "LIBNBD_STRICT_COMMANDS" = 0x1 If set, this flag rejects client requests that do not comply with the set of advertised server flags (for example, attempting a write on a read-only server, or attempting to use "LIBNBD_CMD_FLAG_FUA" when nbd_can_fua(3) returned false). If clear, this flag relies on the server to reject unexpected commands. "LIBNBD_STRICT_FLAGS" = 0x2 If set, this flag rejects client requests that attempt to set a command flag not recognized by libnbd (those outside of "LIBNBD_CMD_FLAG_MASK"), or a flag not normally associated with a command (such as using "LIBNBD_CMD_FLAG_FUA" on a read command). If clear, all flags are sent on to the server, even if sending such a flag may cause the server to change its reply in a manner that confuses libnbd, perhaps causing deadlock or ending the connection. Flags that are known by libnbd as associated with a given command (such as "LIBNBD_CMD_FLAG_DF" for nbd_pread_structured(3) gated by nbd_can_df(3)) are controlled by "LIBNBD_STRICT_COMMANDS" instead; and "LIBNBD_CMD_FLAG_PAYLOAD_LEN" is managed automatically by libnbd unless "LIBNBD_STRICT_AUTO_FLAG" is disabled. Note that the NBD protocol only supports 16 bits of command flags, even though the libnbd API uses "uint32_t"; bits outside of the range permitted by the protocol are always a client-side error. "LIBNBD_STRICT_BOUNDS" = 0x4 If set, this flag rejects client requests that would exceed the export bounds without sending any traffic to the server. If clear, this flag relies on the server to detect out-of-bounds requests. "LIBNBD_STRICT_ZERO_SIZE" = 0x8 If set, this flag rejects client requests with length 0. If clear, this permits zero-length requests to the server, which may produce undefined results. "LIBNBD_STRICT_ALIGN" = 0x10 If set, and the server provided minimum block sizes (see "LIBNBD_SIZE_MINIMUM" for nbd_get_block_size(3)), this flag rejects client requests that do not have length and offset aligned to the server's minimum requirements. If clear, unaligned requests are sent to the server, where it is up to the server whether to honor or reject the request. "LIBNBD_STRICT_PAYLOAD" = 0x20 If set, the client refuses to send a command to the server with more than libnbd's outgoing payload maximum (see "LIBNBD_SIZE_PAYLOAD" for nbd_get_block_size(3)), whether or not the server advertised a block size maximum. If clear, oversize requests up to 64MiB may be attempted, although requests larger than 32MiB are liable to cause some servers to disconnect. "LIBNBD_STRICT_AUTO_FLAG" = 0x40 If set, commands that accept the "LIBNBD_CMD_FLAG_PAYLOAD_LEN" flag (such as nbd_pwrite(3) and nbd_block_status_filter(3)) ignore the presence or absence of that flag from the caller, instead sending the value over the wire that matches the server's expectations based on whether extended headers were negotiated when the connection was made. If clear, the caller takes on the responsibility for whether the payload length flag is set or clear during the affected command, which can be useful during integration testing but is more likely to lead to undefined behavior. For convenience, the constant "LIBNBD_STRICT_MASK" is available to describe all strictness flags supported by this build of libnbd. Future versions of libnbd may add further flags, which are likely to be enabled by default for additional client-side filtering. As such, when attempting to relax only one specific bit while keeping remaining checks at the client side, it is wiser to first call nbd_get_strict_mode(3) and modify that value, rather than blindly setting a constant value. *) val get_strict_mode : t -> STRICT.t list (** [NBD.get_strict_mode t] see which strictness flags are in effect Return flags indicating which protocol strictness items are being enforced locally by libnbd rather than the server. The return value from a newer library version may include bits that were undefined at the time of compilation. *) val set_opt_mode : t -> bool -> unit (** [NBD.set_opt_mode t enable] control option mode, for pausing during option negotiation Set this flag to true in order to request that a connection command "nbd_connect_*" will pause for negotiation options rather than proceeding all the way to the ready state, when communicating with a newstyle server. This setting has no effect when connecting to an oldstyle server. Note that libnbd defaults to attempting "NBD_OPT_STARTTLS", "NBD_OPT_EXTENDED_HEADERS", and "NBD_OPT_STRUCTURED_REPLY" before letting you control remaining negotiation steps; if you need control over these steps as well, first set nbd_set_tls(3) to "LIBNBD_TLS_DISABLE", and nbd_set_request_extended_headers(3) or nbd_set_request_structured_replies(3) to false, before starting the connection attempt. When option mode is enabled, you have fine-grained control over which options are negotiated, compared to the default of the server negotiating everything on your behalf using settings made before starting the connection. To leave the mode and proceed on to the ready state, you must use nbd_opt_go(3) successfully; a failed nbd_opt_go(3) returns to the negotiating state to allow a change of export name before trying again. You may also use nbd_opt_abort(3) or nbd_shutdown(3) to end the connection without finishing negotiation. *) val get_opt_mode : t -> bool (** [NBD.get_opt_mode t] return whether option mode was enabled Return true if option negotiation mode was enabled on this handle. *) val opt_go : t -> unit (** [NBD.opt_go t] end negotiation and move on to using an export Request that the server finish negotiation and move on to serving the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3). This can only be used if nbd_set_opt_mode(3) enabled option mode. By default, libnbd will automatically request all meta contexts registered by nbd_add_meta_context(3) as part of this call; but this can be suppressed with nbd_set_request_meta_context(3), particularly if nbd_opt_set_meta_context(3) was used earlier in the negotiation sequence. If this fails, the server may still be in negotiation, where it is possible to attempt another option such as a different export name; although older servers will instead have killed the connection. *) val opt_abort : t -> unit (** [NBD.opt_abort t] end negotiation and close the connection Request that the server finish negotiation, gracefully if possible, then close the connection. This can only be used if nbd_set_opt_mode(3) enabled option mode. *) val opt_starttls : t -> bool (** [NBD.opt_starttls t] request the server to initiate TLS Request that the server initiate a secure TLS connection, by sending "NBD_OPT_STARTTLS". This can only be used if nbd_set_opt_mode(3) enabled option mode; furthermore, if you use nbd_set_tls(3) to request anything other than the default of "LIBNBD_TLS_DISABLE", then libnbd will have already attempted a TLS connection prior to allowing you control over option negotiation. This command is disabled if nbd_supports_tls(3) reports false. This function is mainly useful for integration testing of corner cases in server handling; in particular, misuse of this function when coupled with a server that is not careful about resetting stateful commands such as nbd_opt_structured_reply(3) could result in a security hole (see CVE-2021-3716 against nbdkit, for example). Thus, when security is a concern, you should instead prefer to use nbd_set_tls(3) with "LIBNBD_TLS_REQUIRE" and let libnbd negotiate TLS automatically. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection, which can include when the server rejects credentials supplied during the TLS handshake). Note that the NBD protocol documents that requesting TLS after it is already enabled is a client error; most servers will gracefully fail a second request, but that does not downgrade a TLS session that has already been established, as reported by nbd_get_tls_negotiated(3). *) val opt_extended_headers : t -> bool (** [NBD.opt_extended_headers t] request the server to enable extended headers Request that the server use extended headers, by sending "NBD_OPT_EXTENDED_HEADERS". This can only be used if nbd_set_opt_mode(3) enabled option mode; furthermore, libnbd defaults to automatically requesting this unless you use nbd_set_request_extended_headers(3) or nbd_set_request_structured_replies(3) prior to connecting. This function is mainly useful for integration testing of corner cases in server handling. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection). Note that some servers fail a second request as redundant; libnbd assumes that once one request has succeeded, then extended headers are supported (as visible by nbd_get_extended_headers_negotiated(3)) regardless if later calls to this function return false. If this function returns true, the use of structured replies is implied. *) val opt_structured_reply : t -> bool (** [NBD.opt_structured_reply t] request the server to enable structured replies Request that the server use structured replies, by sending "NBD_OPT_STRUCTURED_REPLY". This can only be used if nbd_set_opt_mode(3) enabled option mode; furthermore, libnbd defaults to automatically requesting this unless you use nbd_set_request_structured_replies(3) prior to connecting. This function is mainly useful for integration testing of corner cases in server handling. This function returns true if the server replies with success, false if the server replies with an error, and fails only if the server does not reply (such as for a loss of connection). Note that some servers fail a second request as redundant; libnbd assumes that once one request has succeeded, then structured replies are supported (as visible by nbd_get_structured_replies_negotiated(3)) regardless if later calls to this function return false. Similarly, a server may fail this request if extended headers are already negotiated, since extended headers take priority. *) val opt_list : t -> (string -> string -> int) -> int (** [NBD.opt_list t list] request the server to list all exports during negotiation Request that the server list all exports that it supports. This can only be used if nbd_set_opt_mode(3) enabled option mode. The "list" function is called once per advertised export, with any "user_data" passed to this function, and with "name" and "description" supplied by the server. Many servers omit descriptions, in which case "description" will be an empty string. Remember that it is not safe to call nbd_set_export_name(3) from within the context of the callback function; rather, your code must copy any "name" needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of exports that were advertised by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list to avoid being an information leak, may encounter a failure after delivering partial results, or may refuse to answer more than one query per connection in the interest of avoiding negotiation that does not resolve. Thus, this function may succeed even when no exports are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of exports that might be advertised, so client code should be aware that a server may send a lengthy list. For nbd-server(1) you will need to allow clients to make list requests by adding "allowlist=true" to the "[generic]" section of /etc/nbd-server/config. For qemu-nbd(8), a description is set with *-D*. *) val opt_info : t -> unit (** [NBD.opt_info t] request the server for information about an export Request that the server supply information about the export name previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3). This can only be used if nbd_set_opt_mode(3) enabled option mode. If successful, functions like nbd_is_read_only(3) and nbd_get_size(3) will report details about that export. If nbd_set_request_meta_context(3) is set (the default) and structured replies or extended headers were negotiated, it is also valid to use nbd_can_meta_context(3) after this call. However, it may be more efficient to clear that setting and manually utilize nbd_opt_list_meta_context(3) with its callback approach, for learning which contexts an export supports. In general, if nbd_opt_go(3) is called next, that call will likely succeed with the details remaining the same, although this is not guaranteed by all servers. Not all servers understand this request, and even when it is understood, the server might fail the request even when a corresponding nbd_opt_go(3) would succeed. *) val opt_list_meta_context : t -> (string -> int) -> int (** [NBD.opt_list_meta_context t context] list available meta contexts, using implicit query list Request that the server list available meta contexts associated with the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3), and with a list of queries from prior calls to nbd_add_meta_context(3) (see nbd_opt_list_meta_context_queries(3) if you want to supply an explicit query list instead). This can only be used if nbd_set_opt_mode(3) enabled option mode. The NBD protocol allows a client to decide how many queries to ask the server. Rather than taking that list of queries as a parameter to this function, libnbd reuses the current list of requested meta contexts as set by nbd_add_meta_context(3); you can use nbd_clear_meta_contexts(3) to set up a different list of queries. When the list is empty, a server will typically reply with all contexts that it supports; when the list is non-empty, the server will reply only with supported contexts that match the client's request. Note that a reply by the server might be encoded to represent several feasible contexts within one string, rather than multiple strings per actual context name that would actually succeed during nbd_opt_go(3); so it is still necessary to use nbd_can_meta_context(3) after connecting to see which contexts are actually supported. The "context" function is called once per server reply, with any "user_data" passed to this function, and with "name" supplied by the server. Remember that it is not safe to call nbd_add_meta_context(3) from within the context of the callback function; rather, your code must copy any "name" needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of replies that might be advertised, so client code should be aware that a server may send a lengthy list. *) val opt_list_meta_context_queries : t -> string list -> (string -> int) -> int (** [NBD.opt_list_meta_context_queries t queries context] list available meta contexts, using explicit query list Request that the server list available meta contexts associated with the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3), and with an explicit list of queries provided as a parameter (see nbd_opt_list_meta_context(3) if you want to reuse an implicit query list instead). This can only be used if nbd_set_opt_mode(3) enabled option mode. The NBD protocol allows a client to decide how many queries to ask the server. For this function, the list is explicit in the "queries" parameter. When the list is empty, a server will typically reply with all contexts that it supports; when the list is non-empty, the server will reply only with supported contexts that match the client's request. Note that a reply by the server might be encoded to represent several feasible contexts within one string, rather than multiple strings per actual context name that would actually succeed during nbd_opt_go(3); so it is still necessary to use nbd_can_meta_context(3) after connecting to see which contexts are actually supported. The "context" function is called once per server reply, with any "user_data" passed to this function, and with "name" supplied by the server. Remember that it is not safe to call nbd_add_meta_context(3) from within the context of the callback function; rather, your code must copy any "name" needed for later use after this function completes. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. Likewise, the NBD protocol does not specify an upper bound for the number of replies that might be advertised, so client code should be aware that a server may send a lengthy list. *) val opt_set_meta_context : t -> (string -> int) -> int (** [NBD.opt_set_meta_context t context] select specific meta contexts, using implicit query list Request that the server supply all recognized meta contexts registered through prior calls to nbd_add_meta_context(3), in conjunction with the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3). This can only be used if nbd_set_opt_mode(3) enabled option mode. Normally, this function is redundant, as nbd_opt_go(3) automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with nbd_set_request_meta_context(3) to bypass the automatic context request normally performed by nbd_opt_go(3). The NBD protocol allows a client to decide how many queries to ask the server. Rather than taking that list of queries as a parameter to this function, libnbd reuses the current list of requested meta contexts as set by nbd_add_meta_context(3); you can use nbd_clear_meta_contexts(3) to set up a different list of queries (see nbd_opt_set_meta_context_queries(3) to pass an explicit list of contexts instead). Since this function is primarily designed for testing servers, libnbd does not prevent the use of this function on an empty list or when nbd_set_request_structured_replies(3) has disabled structured replies, in order to see how a server behaves. The "context" function is called once per server reply, with any "user_data" passed to this function, and with "name" supplied by the server. Additionally, each server name will remain visible through nbd_can_meta_context(3) until the next attempt at nbd_set_export_name(3) or nbd_opt_set_meta_context(3), as well as nbd_opt_go(3) or nbd_opt_info(3) that trigger an automatic meta context request. Remember that it is not safe to call any "nbd_*" APIs from within the context of the callback function. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. *) val opt_set_meta_context_queries : t -> string list -> (string -> int) -> int (** [NBD.opt_set_meta_context_queries t queries context] select specific meta contexts, using explicit query list Request that the server supply all recognized meta contexts passed in through "queries", in conjunction with the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3). This can only be used if nbd_set_opt_mode(3) enabled option mode. Normally, this function is redundant, as nbd_opt_go(3) automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with nbd_set_request_meta_context(3) to bypass the automatic context request normally performed by nbd_opt_go(3). The NBD protocol allows a client to decide how many queries to ask the server. This function takes an explicit list of queries; to instead reuse an implicit list, see nbd_opt_set_meta_context(3). Since this function is primarily designed for testing servers, libnbd does not prevent the use of this function on an empty list or when nbd_set_request_structured_replies(3) has disabled structured replies, in order to see how a server behaves. The "context" function is called once per server reply, with any "user_data" passed to this function, and with "name" supplied by the server. Additionally, each server name will remain visible through nbd_can_meta_context(3) until the next attempt at nbd_set_export_name(3) or nbd_opt_set_meta_context(3), as well as nbd_opt_go(3) or nbd_opt_info(3) that trigger an automatic meta context request. Remember that it is not safe to call any "nbd_*" APIs from within the context of the callback function. At present, the return value of the callback is ignored, although a return of -1 should be avoided. For convenience, when this function succeeds, it returns the number of replies returned by the server. Not all servers understand this request, and even when it is understood, the server might intentionally send an empty list because it does not support the requested context, or may encounter a failure after delivering partial results. Thus, this function may succeed even when no contexts are reported, or may fail but have a non-empty list. *) val add_meta_context : t -> string -> unit (** [NBD.add_meta_context t name] ask server to negotiate metadata context During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as "base:allocation") which describe information returned by the nbd_block_status_64(3) command (for "base:allocation" this is whether blocks of data are allocated, zero or sparse). This call adds one metadata context to the list to be negotiated. You can call it as many times as needed. The list is initially empty when the handle is created; you can check the contents of the list with nbd_get_nr_meta_contexts(3) and nbd_get_meta_context(3), or clear it with nbd_clear_meta_contexts(3). The NBD protocol limits meta context names to 4096 bytes, but servers may not support the full length. The encoding of meta context names is always UTF-8. Not all servers support all metadata contexts. To learn if a context was actually negotiated, call nbd_can_meta_context(3) after connecting. The single parameter is the name of the metadata context, for example "LIBNBD_CONTEXT_BASE_ALLOCATION". includes defined constants beginning with "LIBNBD_CONTEXT_" for some well-known contexts, but you are free to pass in other contexts. Other metadata contexts are server-specific, but include "qemu:dirty-bitmap:..." and "qemu:allocation-depth" for qemu-nbd (see qemu-nbd *-B* and *-A* options). *) val get_nr_meta_contexts : t -> int (** [NBD.get_nr_meta_contexts t] return the current number of requested meta contexts During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as "base:allocation") which describe information returned by the nbd_block_status_64(3) command (for "base:allocation" this is whether blocks of data are allocated, zero or sparse). This command returns how many meta contexts have been added to the list to request from the server via nbd_add_meta_context(3). The server is not obligated to honor all of the requests; to see what it actually supports, see nbd_can_meta_context(3). *) val get_meta_context : t -> int -> string (** [NBD.get_meta_context t i] return the i'th meta context request During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as "base:allocation") which describe information returned by the nbd_block_status_64(3) command (for "base:allocation" this is whether blocks of data are allocated, zero or sparse). This command returns the i'th meta context request, as added by nbd_add_meta_context(3), and bounded by nbd_get_nr_meta_contexts(3). *) val clear_meta_contexts : t -> unit (** [NBD.clear_meta_contexts t] reset the list of requested meta contexts During connection libnbd can negotiate zero or more metadata contexts with the server. Metadata contexts are features (such as "base:allocation") which describe information returned by the nbd_block_status_64(3) command (for "base:allocation" this is whether blocks of data are allocated, zero or sparse). This command resets the list of meta contexts to request back to an empty list, for re-population by further use of nbd_add_meta_context(3). It is primarily useful when option negotiation mode is selected (see nbd_set_opt_mode(3)), for altering the list of attempted contexts between subsequent export queries. *) val set_uri_allow_transports : t -> ALLOW_TRANSPORT.t list -> unit (** [NBD.set_uri_allow_transports t mask] set the allowed transports in NBD URIs Set which transports are allowed to appear in NBD URIs. The default is to allow any transport. The "mask" parameter may contain any of the following flags ORed together: "LIBNBD_ALLOW_TRANSPORT_TCP" = 0x1 "LIBNBD_ALLOW_TRANSPORT_UNIX" = 0x2 "LIBNBD_ALLOW_TRANSPORT_VSOCK" = 0x4 For convenience, the constant "LIBNBD_ALLOW_TRANSPORT_MASK" is available to describe all transports recognized by this build of libnbd. A future version of the library may add new flags. *) val set_uri_allow_tls : t -> TLS.t -> unit (** [NBD.set_uri_allow_tls t tls] set the allowed TLS settings in NBD URIs Set which TLS settings are allowed to appear in NBD URIs. The default is to allow either non-TLS or TLS URIs. The "tls" parameter can be: "LIBNBD_TLS_DISABLE" TLS URIs are not permitted, ie. a URI such as "nbds://..." will be rejected. "LIBNBD_TLS_ALLOW" This is the default. TLS may be used or not, depending on whether the URI uses "nbds" or "nbd". "LIBNBD_TLS_REQUIRE" TLS URIs are required. All URIs must use "nbds". *) val set_uri_allow_local_file : t -> bool -> unit (** [NBD.set_uri_allow_local_file t allow] set the allowed transports in NBD URIs Allow NBD URIs to reference local files. This is *disabled* by default. Currently this setting only controls whether the "tls-psk-file" parameter in NBD URIs is allowed. *) val connect_uri : t -> string -> unit (** [NBD.connect_uri t uri] connect to NBD URI Connect (synchronously) to an NBD server and export by specifying the NBD URI. NBD URIs are a standard way to specify a network block device endpoint, using a syntax like "nbd://example.com" which is convenient, well defined and future proof. This call works by parsing the URI parameter and calling nbd_set_export_name(3) and nbd_set_tls(3) and other calls as needed, followed by nbd_connect_tcp(3), nbd_connect_unix(3) or nbd_connect_vsock(3). This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but nbd_set_opt_mode(3) can be used for manual control over option negotiation performed before transmission phase. Example URIs supported "nbd://example.com" Connect over TCP, unencrypted, to "example.com" port 10809. "nbds://example.com" Connect over TCP with TLS, to "example.com" port 10809. If the server does not support TLS then this will fail. "nbd+unix:///foo?socket=/tmp/nbd.sock" Connect over the Unix domain socket /tmp/nbd.sock to an NBD server running locally. The export name is set to "foo" (note without any leading "/" character). "nbds+unix://alice@/?socket=/tmp/nbd.sock&tls-certificat es=certs" Connect over a Unix domain socket, enabling TLS and setting the path to a directory containing certificates and keys. "nbd+vsock:///" In this scenario libnbd is running in a virtual machine. Connect over "AF_VSOCK" to an NBD server running on the hypervisor. Supported URI formats The following schemes are supported in the current version of libnbd: "nbd:" Connect over TCP without using TLS. "nbds:" Connect over TCP. TLS is required and the connection will fail if the server does not support TLS. "nbd+unix:" "nbds+unix:" Connect over a Unix domain socket, without or with TLS respectively. The "socket" parameter is required. "nbd+vsock:" "nbds+vsock:" Connect over the "AF_VSOCK" transport, without or with TLS respectively. You can use nbd_supports_vsock(3) to see if this build of libnbd supports "AF_VSOCK". The authority part of the URI ("[username@][servername][:port]") is parsed depending on the transport. For TCP it specifies the server to connect to and optional port number. For "+unix" it should not be present. For "+vsock" the server name is the numeric CID (eg. 2 to connect to the host), and the optional port number may be present. If the "username" is present it is used for TLS authentication. For all transports, an export name may be present, parsed in accordance with the NBD URI specification. Finally the query part of the URI can contain: socket=SOCKET Specifies the Unix domain socket to connect on. Must be present for the "+unix" transport and must not be present for the other transports. tls-certificates=DIR Set the certificates directory. See nbd_set_tls_certificates(3). Note this is not allowed by default - see next section. tls-psk-file=PSKFILE Set the PSK file. See nbd_set_tls_psk_file(3). Note this is not allowed by default - see next section. tls-verify-peer=false Do not verify the server certificate. See nbd_set_tls_verify_peer(3). The default is "true". Disable URI features For security reasons you might want to disable certain URI features. Pre-filtering URIs is error-prone and should not be attempted. Instead use the libnbd APIs below to control what can appear in URIs. Note you must call these functions on the same handle before calling nbd_connect_uri(3) or nbd_aio_connect_uri(3). TCP, Unix domain socket or "AF_VSOCK" transports Default: all allowed To select which transports are allowed call nbd_set_uri_allow_transports(3). TLS Default: both non-TLS and TLS connections allowed To force TLS off or on in URIs call nbd_set_uri_allow_tls(3). Connect to Unix domain socket in the local filesystem Default: allowed To prevent this you must disable the "+unix" transport using nbd_set_uri_allow_transports(3). Read from local files Default: denied To allow URIs to contain references to local files (eg. for parameters like "tls-psk-file") call nbd_set_uri_allow_local_file(3). Overriding the export name It is possible to override the export name portion of a URI by using nbd_set_opt_mode(3) to enable option mode, then using nbd_set_export_name(3) and nbd_opt_go(3) as part of subsequent negotiation. Optional features This call will fail if libnbd was not compiled with libxml2; you can test whether this is the case with nbd_supports_uri(3). Support for URIs that require TLS will fail if libnbd was not compiled with gnutls; you can test whether this is the case with nbd_supports_tls(3). Constructing a URI from an existing connection See nbd_get_uri(3). *) val connect_unix : t -> string -> unit (** [NBD.connect_unix t unixsocket] connect to NBD server over a Unix domain socket Connect (synchronously) over the named Unix domain socket ("unixsocket") to an NBD server running on the same machine. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but nbd_set_opt_mode(3) can be used for manual control over option negotiation performed before transmission phase. *) val connect_vsock : t -> int64 (* uint32_t *) -> int64 (* uint32_t *) -> unit (** [NBD.connect_vsock t cid port] connect to NBD server over AF_VSOCK protocol Connect (synchronously) over the "AF_VSOCK" protocol from a virtual machine to an NBD server, usually running on the host. The "cid" and "port" parameters specify the server address. Usually "cid" should be 2 (to connect to the host), and "port" might be 10809 or another port number assigned to you by the host administrator. Not all systems support "AF_VSOCK"; to determine if libnbd was built on a system with vsock support, see nbd_supports_vsock(3). This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but nbd_set_opt_mode(3) can be used for manual control over option negotiation performed before transmission phase. *) val connect_tcp : t -> string -> string -> unit (** [NBD.connect_tcp t hostname port] connect to NBD server over a TCP port Connect (synchronously) to the NBD server listening on "hostname:port". The "port" may be a port name such as "nbd", or it may be a port number as a string such as "10809". This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but nbd_set_opt_mode(3) can be used for manual control over option negotiation performed before transmission phase. *) val connect_socket : t -> Unix.file_descr -> unit (** [NBD.connect_socket t sock] connect directly to a connected socket Pass a connected socket "sock" through which libnbd will talk to the NBD server. The caller is responsible for creating and connecting this socket by some method, before passing it to libnbd. If this call returns without error then socket ownership is passed to libnbd. Libnbd will close the socket when the handle is closed. The caller must not use the socket in any way. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but nbd_set_opt_mode(3) can be used for manual control over option negotiation performed before transmission phase. *) val connect_command : t -> string list -> unit (** [NBD.connect_command t argv] connect to NBD server command Run the command as a subprocess and connect to it over stdin/stdout. This is for use with NBD servers which can behave like inetd clients, such as nbdkit(1) using the *-s*/*--single* flag, and nbd-server(1) with port number set to 0. To run qemu-nbd(1), use nbd_connect_systemd_socket_activation(3) instead. Subprocess Libnbd will fork the "argv" command and pass the NBD socket to it using file descriptors 0 and 1 (stdin/stdout): ┌─────────┬─────────┐ ┌────────────────┐ │ program │ libnbd │ │ NBD server │ │ │ │ │ (argv) │ │ │ socket ╍╍╍╍╍╍╍╍▶ stdin/stdout │ └─────────┴─────────┘ └────────────────┘ When the NBD handle is closed the server subprocess is killed. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but nbd_set_opt_mode(3) can be used for manual control over option negotiation performed before transmission phase. *) val connect_systemd_socket_activation : t -> string list -> unit (** [NBD.connect_systemd_socket_activation t argv] connect using systemd socket activation Run the command as a subprocess and connect to it using systemd socket activation. This is especially useful for running qemu-nbd(1) as a subprocess of libnbd, for example to use it to open qcow2 files. To run nbdkit as a subprocess, this function can be used, or nbd_connect_command(3). To run nbd-server(1) as a subprocess, this function cannot be used, you must use nbd_connect_command(3). Socket activation Libnbd will fork the "argv" command and pass an NBD socket to it using special "LISTEN_*" environment variables (as defined by the systemd socket activation protocol). ┌─────────┬─────────┐ ┌───────────────┐ │ program │ libnbd │ │ qemu-nbd or │ │ │ │ │ other server │ │ │ socket ╍╍╍╍╍╍╍╍▶ │ └─────────┴─────────┘ └───────────────┘ When the NBD handle is closed the server subprocess is killed. Socket name The socket activation protocol lets you optionally give the socket a name. If used, the name is passed to the NBD server using the "LISTEN_FDNAMES" environment variable. To provide a socket name, call nbd_set_socket_activation_name(3) before calling the connect function. This call returns when the connection has been made. By default, this proceeds all the way to transmission phase, but nbd_set_opt_mode(3) can be used for manual control over option negotiation performed before transmission phase. *) val set_socket_activation_name : t -> string -> unit (** [NBD.set_socket_activation_name t socket_name] set the socket activation name When running an NBD server using nbd_connect_systemd_socket_activation(3) you can optionally name the socket. Call this function before connecting to the server. Some servers such as qemu-storage-daemon(1) can use this information to associate the socket with a name used on the command line, but most servers will ignore it. The name is passed through the "LISTEN_FDNAMES" environment variable. The parameter "socket_name" can be a short alphanumeric string. If it is set to the empty string (also the default when the handle is created) then the name "unknown" will be seen by the server. *) val get_socket_activation_name : t -> string (** [NBD.get_socket_activation_name t] get the socket activation name Return the socket name used when you call nbd_connect_systemd_socket_activation(3) on the same handle. By default this will return the empty string meaning that the server will see the name "unknown". *) val is_read_only : t -> bool (** [NBD.is_read_only t] is the NBD export read-only? Returns true if the NBD export is read-only; writes and write-like operations will fail. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_flush : t -> bool (** [NBD.can_flush t] does the server support the flush command? Returns true if the server supports the flush command (see nbd_flush(3), nbd_aio_flush(3)). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_fua : t -> bool (** [NBD.can_fua t] does the server support the FUA flag? Returns true if the server supports the FUA flag on certain commands (see nbd_pwrite(3)). This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val is_rotational : t -> bool (** [NBD.is_rotational t] is the NBD disk rotational (like a disk)? Returns true if the disk exposed over NBD is rotational (like a traditional floppy or hard disk). Returns false if the disk has no penalty for random access (like an SSD or RAM disk). This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_trim : t -> bool (** [NBD.can_trim t] does the server support the trim command? Returns true if the server supports the trim command (see nbd_trim(3), nbd_aio_trim(3)). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_zero : t -> bool (** [NBD.can_zero t] does the server support the zero command? Returns true if the server supports the zero command (see nbd_zero(3), nbd_aio_zero(3)). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_fast_zero : t -> bool (** [NBD.can_fast_zero t] does the server support the fast zero flag? Returns true if the server supports the use of the "LIBNBD_CMD_FLAG_FAST_ZERO" flag to the zero command (see nbd_zero(3), nbd_aio_zero(3)). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_block_status_payload : t -> bool (** [NBD.can_block_status_payload t] does the server support the block status payload flag? Returns true if the server supports the use of the "LIBNBD_CMD_FLAG_PAYLOAD_LEN" flag to allow filtering of the block status command (see nbd_block_status_filter(3)). Returns false if the server does not. Note that this will never return true if nbd_get_extended_headers_negotiated(3) is false. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_df : t -> bool (** [NBD.can_df t] does the server support the don't fragment flag to pread? Returns true if the server supports structured reads with an ability to request a non-fragmented read (see nbd_pread_structured(3), nbd_aio_pread_structured(3)). Returns false if the server either lacks structured reads or if it does not support a non-fragmented read request. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_multi_conn : t -> bool (** [NBD.can_multi_conn t] does the server support multi-conn? Returns true if the server supports multi-conn. Returns false if the server does not. It is not safe to open multiple handles connecting to the same server if you will write to the server and the server does not advertise multi-conn support. The safe way to check for this is to open one connection, check this flag is true, then open further connections as required. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_cache : t -> bool (** [NBD.can_cache t] does the server support the cache command? Returns true if the server supports the cache command (see nbd_cache(3), nbd_aio_cache(3)). Returns false if the server does not. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val can_meta_context : t -> string -> bool (** [NBD.can_meta_context t metacontext] does the server support a specific meta context? Returns true if the server supports the given meta context (see nbd_add_meta_context(3)). Returns false if the server does not. It is possible for this command to fail if meta contexts were requested but there is a missing or failed attempt at NBD_OPT_SET_META_CONTEXT during option negotiation. If the server supports block status filtering (see nbd_can_block_status_payload(3), this function must return true for any filter name passed to nbd_block_status_filter(3). The single parameter is the name of the metadata context, for example "LIBNBD_CONTEXT_BASE_ALLOCATION". includes defined constants for well-known namespace contexts beginning with "LIBNBD_CONTEXT_", but you are free to pass in other contexts. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val get_protocol : t -> string (** [NBD.get_protocol t] return the NBD protocol variant Return the NBD protocol variant in use on the connection. At the moment this returns one of the strings "oldstyle", "newstyle" or "newstyle-fixed". Other strings might be returned in the future. Most modern NBD servers use "newstyle-fixed". This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val get_size : t -> int64 (** [NBD.get_size t] return the export size Returns the size in bytes of the NBD export. Note that this call fails with "EOVERFLOW" for an unlikely server that advertises a size which cannot fit in a 64-bit signed integer. nbdinfo(1) *--size* option is a way to access this API from shell scripts. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val get_block_size : t -> SIZE.t -> int64 (** [NBD.get_block_size t size_type] return a specific server block size constraint Returns a specific block size constraint advertised by the server. If zero is returned it means the server did not advertise a constraint. Constraints are hints. Servers differ in their behaviour as to whether they enforce constraints or not. The "size_type" parameter selects which constraint to read. It can be one of: "LIBNBD_SIZE_MINIMUM" = 0 If non-zero, this will be a power of 2 between 1 and 64k; any client request that is not aligned in length or offset to this size is likely to fail with "EINVAL". The image size will generally also be a multiple of this value (if not, the final few bytes are inaccessible while obeying alignment constraints). If zero (meaning no information was returned by the server), it is safest to assume a minimum block size of 512, although many servers support a minimum block size of 1. If the server provides a constraint, then libnbd defaults to honoring that constraint client-side unless "LIBNBD_STRICT_ALIGN" is cleared in nbd_set_strict_mode(3). "LIBNBD_SIZE_PREFERRED" = 1 If non-zero, this is a power of 2 representing the preferred size for efficient I/O. Smaller requests may incur overhead such as read-modify-write cycles that will not be present when using I/O that is a multiple of this value. This value may be larger than the size of the export. If zero (meaning no information was returned by the server), using 4k as a preferred block size tends to give decent performance. "LIBNBD_SIZE_MAXIMUM" = 2 If non-zero, this represents the maximum length that the server is willing to handle during nbd_pread(3) or nbd_pwrite(3). Other functions like nbd_zero(3) may still be able to use larger sizes. Note that this function returns what the server advertised, but libnbd itself imposes a maximum of 64M. If zero (meaning no information was returned by the server), some NBD servers will abruptly disconnect if a transaction sends or receives more than 32M of data. "LIBNBD_SIZE_PAYLOAD" = 3 This value is not advertised by the server, but rather represents the maximum outgoing payload size for a given connection that libnbd will enforce unless "LIBNBD_STRICT_PAYLOAD" is cleared in nbd_set_strict_mode(3). It is always non-zero: never smaller than 1M, never larger than 64M, and matches "LIBNBD_SIZE_MAXIMUM" when possible. Future NBD extensions may result in additional "size_type" values. Note that by default, libnbd requests all available block sizes, but that a server may differ in what sizes it chooses to report if nbd_set_request_block_size(3) alters whether the client requests sizes. This call does not block, because it returns data that is saved in the handle from the NBD protocol handshake. *) val pread : ?flags:CMD_FLAG.t list -> t -> bytes -> int64 -> unit (** [NBD.pread t ?flags buf offset] read from the NBD server Issue a read command to the NBD server for the range starting at "offset" and ending at "offset" + "count" - 1. NBD can only read all or nothing using this call. The call returns when the data has been read fully into "buf" or there is an error. See also nbd_pread_structured(3), if finer visibility is required into the server's replies, or if you want to use "LIBNBD_CMD_FLAG_DF". Note that libnbd currently enforces a maximum read buffer of 64MiB, even if the server would permit a larger buffer in a single transaction; attempts to exceed this will result in an "ERANGE" error. The server may enforce a smaller limit, which can be learned with nbd_get_block_size(3). The "flags" parameter must be 0 for now (it exists for future NBD protocol extensions). Note that if this command fails, and nbd_get_pread_initialize(3) returns true, then libnbd sanitized "buf", but it is unspecified whether the contents of "buf" will read as zero or as partial results from the server. If nbd_get_pread_initialize(3) returns false, then libnbd did not sanitize "buf", and the contents are undefined on failure. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val pread_structured : ?flags:CMD_FLAG.t list -> t -> bytes -> int64 -> (bytes -> int64 -> int -> int ref -> int) -> unit (** [NBD.pread_structured t ?flags buf offset chunk] read from the NBD server Issue a read command to the NBD server for the range starting at "offset" and ending at "offset" + "count" - 1. The server's response may be subdivided into chunks which may arrive out of order before reassembly into the original buffer; the "chunk" callback is used for notification after each chunk arrives, and may perform additional sanity checking on the server's reply. The callback cannot call "nbd_*" APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns -1, and no earlier error has been detected, then the overall read command will fail with any non-zero value stored into the callback's "error" parameter (with a default of "EPROTO"); but any further chunks will still invoke the callback. The "chunk" function is called once per chunk of data received, with the "user_data" passed to this function. The "subbuf" and "count" parameters represent the subset of the original buffer which has just been populated by results from the server (in C, "subbuf" always points within the original "buf"; but this guarantee may not extend to other language bindings). The "offset" parameter represents the absolute offset at which "subbuf" begins within the image (note that this is not the relative offset of "subbuf" within the original buffer "buf"). Changes to "error" on output are ignored unless the callback fails. The input meaning of the "error" parameter is controlled by the "status" parameter, which is one of "LIBNBD_READ_DATA" = 1 "subbuf" was populated with "count" bytes of data. On input, "error" contains the errno value of any earlier detected error, or zero. "LIBNBD_READ_HOLE" = 2 "subbuf" represents a hole, and contains "count" NUL bytes. On input, "error" contains the errno value of any earlier detected error, or zero. "LIBNBD_READ_ERROR" = 3 "count" is 0, so "subbuf" is unusable. On input, "error" contains the errno value reported by the server as occurring while reading that "offset", regardless if any earlier error has been detected. Future NBD extensions may permit other values for "status", but those will not be returned to a client that has not opted in to requesting such extensions. If the server is non-compliant, it is possible for the "chunk" function to be called more times than you expect or with "count" 0 for "LIBNBD_READ_DATA" or "LIBNBD_READ_HOLE". It is also possible that the "chunk" function is not called at all (in particular, "LIBNBD_READ_ERROR" is used only when an error is associated with a particular offset, and not when the server reports a generic error), but you are guaranteed that the callback was called at least once if the overall read succeeds. Libnbd does not validate that the server obeyed the requirement that a read call must not have overlapping chunks and must not succeed without enough chunks to cover the entire request. Note that libnbd currently enforces a maximum read buffer of 64MiB, even if the server would permit a larger buffer in a single transaction; attempts to exceed this will result in an "ERANGE" error. The server may enforce a smaller limit, which can be learned with nbd_get_block_size(3). The "flags" parameter may be 0 for no flags, or may contain "LIBNBD_CMD_FLAG_DF" meaning that the server should not reply with more than one fragment (if that is supported - some servers cannot do this, see nbd_can_df(3)). Libnbd does not validate that the server actually obeys the flag. Note that if this command fails, and nbd_get_pread_initialize(3) returns true, then libnbd sanitized "buf", but it is unspecified whether the contents of "buf" will read as zero or as partial results from the server. If nbd_get_pread_initialize(3) returns false, then libnbd did not sanitize "buf", and the contents are undefined on failure. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val pwrite : ?flags:CMD_FLAG.t list -> t -> bytes -> int64 -> unit (** [NBD.pwrite t ?flags buf offset] write to the NBD server Issue a write command to the NBD server, writing the data in "buf" to the range starting at "offset" and ending at "offset" + "count" - 1. NBD can only write all or nothing using this call. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if nbd_is_read_only(3) is true. Note that libnbd defaults to enforcing a maximum write buffer of the lesser of 64MiB or any maximum payload size advertised by the server; attempts to exceed this will generally result in a client-side "ERANGE" error, rather than a server-side disconnection. The actual limit can be learned with nbd_get_block_size(3). The "flags" parameter may be 0 for no flags, or may contain "LIBNBD_CMD_FLAG_FUA" meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see nbd_can_fua(3)). For convenience, unless nbd_set_strict_flags(3) was used to disable "LIBNBD_STRICT_AUTO_FLAG", libnbd ignores the presence or absence of the flag "LIBNBD_CMD_FLAG_PAYLOAD_LEN" in "flags", while correctly using the flag over the wire according to whether extended headers were negotiated. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val shutdown : ?flags:SHUTDOWN.t list -> t -> unit (** [NBD.shutdown t ?flags] disconnect from the NBD server Issue the disconnect command to the NBD server. This is a nice way to tell the server we are going away, but from the client's point of view has no advantage over abruptly closing the connection (see nbd_close(3)). This function works whether or not the handle is ready for transmission of commands. If more fine-grained control is needed, see nbd_aio_opt_abort(3) and nbd_aio_disconnect(3). The "flags" argument is a bitmask, including zero or more of the following shutdown flags: "LIBNBD_SHUTDOWN_ABANDON_PENDING" = 0x10000 If there are any pending requests which have not yet been sent to the server (see nbd_aio_in_flight(3)), abandon them without sending them to the server, rather than the usual practice of issuing those commands before informing the server of the intent to disconnect. For convenience, the constant "LIBNBD_SHUTDOWN_MASK" is available to describe all shutdown flags recognized by this build of libnbd. A future version of the library may add new flags. *) val flush : ?flags:CMD_FLAG.t list -> t -> unit (** [NBD.flush t ?flags] send flush command to the NBD server Issue the flush command to the NBD server. The function should return when all write commands which have completed have been committed to permanent storage on the server. Note this will generally return an error if nbd_can_flush(3) is false. The "flags" parameter must be 0 for now (it exists for future NBD protocol extensions). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val trim : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> unit (** [NBD.trim t ?flags count offset] send trim command to the NBD server Issue a trim command to the NBD server, which if supported by the server causes a hole to be punched in the backing store starting at "offset" and ending at "offset" + "count" - 1. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if nbd_can_trim(3) is false or nbd_is_read_only(3) is true. Note that not all servers can support a "count" of 4GiB or larger; nbd_get_extended_headers_negotiated(3) indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum trim size, although a future extension may add a constraint visible in nbd_get_block_size(3). The "flags" parameter may be 0 for no flags, or may contain "LIBNBD_CMD_FLAG_FUA" meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see nbd_can_fua(3)). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val cache : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> unit (** [NBD.cache t ?flags count offset] send cache (prefetch) command to the NBD server Issue the cache (prefetch) command to the NBD server, which if supported by the server causes data to be prefetched into faster storage by the server, speeding up a subsequent nbd_pread(3) call. The server can also silently ignore this command. Note this will generally return an error if nbd_can_cache(3) is false. Note that not all servers can support a "count" of 4GiB or larger; nbd_get_extended_headers_negotiated(3) indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum cache size, although a future extension may add a constraint visible in nbd_get_block_size(3). The "flags" parameter must be 0 for now (it exists for future NBD protocol extensions). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val zero : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> unit (** [NBD.zero t ?flags count offset] send write zeroes command to the NBD server Issue a write zeroes command to the NBD server, which if supported by the server causes a zeroes to be written efficiently starting at "offset" and ending at "offset" + "count" - 1. The call returns when the command has been acknowledged by the server, or there is an error. Note this will generally return an error if nbd_can_zero(3) is false or nbd_is_read_only(3) is true. Note that not all servers can support a "count" of 4GiB or larger; nbd_get_extended_headers_negotiated(3) indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum zero size, although a future extension may add a constraint visible in nbd_get_block_size(3). Also, some servers may permit a larger zero request only when the "LIBNBD_CMD_FLAG_FAST_ZERO" is in use. The "flags" parameter may be 0 for no flags, or may contain "LIBNBD_CMD_FLAG_FUA" meaning that the server should not return until the data has been committed to permanent storage (if that is supported - some servers cannot do this, see nbd_can_fua(3)), "LIBNBD_CMD_FLAG_NO_HOLE" meaning that the server should favor writing actual allocated zeroes over punching a hole, and/or "LIBNBD_CMD_FLAG_FAST_ZERO" meaning that the server must fail quickly if writing zeroes is no faster than a normal write (if that is supported - some servers cannot do this, see nbd_can_fast_zero(3)). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val block_status : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> (string -> int64 -> int64 (* uint32_t *) array -> int ref -> int) -> unit (** [NBD.block_status t ?flags count offset extent] send block status command, with 32-bit callback Issue the block status command to the NBD server. If supported by the server, this causes metadata context information about blocks beginning from the specified offset to be returned. The "count" parameter is a hint: the server may choose to return less status, or the final block may extend beyond the requested range. If multiple contexts are supported, the number of blocks and cumulative length of those blocks need not be identical between contexts. Note that not all servers can support a "count" of 4GiB or larger; nbd_get_extended_headers_negotiated(3) indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum block status size, although a future extension may add a constraint visible in nbd_get_block_size(3). Furthermore, this function is inherently limited to 32-bit values. If the server replies with a larger extent, the length of that extent will be truncated to just below 32 bits and any further extents from the server will be ignored. If the server replies with a status value larger than 32 bits (only possible when extended headers are in use), the callback function will be passed an "EOVERFLOW" error. To get the full extent information from a server that supports 64-bit extents, you must use nbd_block_status_64(3). Depending on which metadata contexts were enabled before connecting (see nbd_add_meta_context(3)) and which are supported by the server (see nbd_can_meta_context(3)) this call returns information about extents by calling back to the "extent" function. The callback cannot call "nbd_*" APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns -1, and no earlier error has been detected, then the overall block status command will fail with any non-zero value stored into the callback's "error" parameter (with a default of "EPROTO"); but any further contexts will still invoke the callback. The "extent" function is called once per type of metadata available, with the "user_data" passed to this function. The "metacontext" parameter is a string such as "base:allocation". The "entries" array is an array of pairs of integers with the first entry in each pair being the length (in bytes) of the block and the second entry being a status/flags field which is specific to the metadata context. The number of pairs passed to the function is "nr_entries/2". The NBD protocol document in the section about "NBD_REPLY_TYPE_BLOCK_STATUS" describes the meaning of this array; for contexts known to libnbd, contains constants beginning with "LIBNBD_STATE_" that may help decipher the values. On entry to the callback, the "error" parameter contains the errno value of any previously detected error, but even if an earlier error was detected, the current "metacontext" and "entries" are valid. It is possible for the extent function to be called more times than you expect (if the server is buggy), so always check the "metacontext" field to ensure you are receiving the data you expect. It is also possible that the extent function is not called at all, even for metadata contexts that you requested. This indicates either that the server doesn't support the context or for some other reason cannot return the data. The "flags" parameter may be 0 for no flags, or may contain "LIBNBD_CMD_FLAG_REQ_ONE" meaning that the server should return only one extent per metadata context where that extent does not exceed "count" bytes; however, libnbd does not validate that the server obeyed the flag. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val block_status_64 : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> (string -> int64 -> extent array -> int ref -> int) -> unit (** [NBD.block_status_64 t ?flags count offset extent64] send block status command, with 64-bit callback Issue the block status command to the NBD server. If supported by the server, this causes metadata context information about blocks beginning from the specified offset to be returned. The "count" parameter is a hint: the server may choose to return less status, or the final block may extend beyond the requested range. When multiple contexts are supported, the number of blocks and cumulative length of those blocks need not be identical between contexts; this command generally returns the status of all negotiated contexts, while some servers also support a filtered request (see nbd_can_block_status_payload(3), nbd_block_status_filter(3)). Note that not all servers can support a "count" of 4GiB or larger; nbd_get_extended_headers_negotiated(3) indicates which servers will parse a request larger than 32 bits. The NBD protocol does not yet have a way for a client to learn if the server will enforce an even smaller maximum block status size, although a future extension may add a constraint visible in nbd_get_block_size(3). Depending on which metadata contexts were enabled before connecting (see nbd_add_meta_context(3)) and which are supported by the server (see nbd_can_meta_context(3)) this call returns information about extents by calling back to the "extent64" function. The callback cannot call "nbd_*" APIs on the same handle since it holds the handle lock and will cause a deadlock. If the callback returns -1, and no earlier error has been detected, then the overall block status command will fail with any non-zero value stored into the callback's "error" parameter (with a default of "EPROTO"); but any further contexts will still invoke the callback. The "extent64" function is called once per type of metadata available, with the "user_data" passed to this function. The "metacontext" parameter is a string such as "base:allocation". The "entries" array is an array of nbd_extent structs, containing length (in bytes) of the block and a status/flags field which is specific to the metadata context. The number of array entries passed to the function is "nr_entries". The NBD protocol document in the section about "NBD_REPLY_TYPE_BLOCK_STATUS" describes the meaning of this array; for contexts known to libnbd, contains constants beginning with "LIBNBD_STATE_" that may help decipher the values. On entry to the callback, the "error" parameter contains the errno value of any previously detected error. It is possible for the extent function to be called more times than you expect (if the server is buggy), so always check the "metacontext" field to ensure you are receiving the data you expect. It is also possible that the extent function is not called at all, even for metadata contexts that you requested. This indicates either that the server doesn't support the context or for some other reason cannot return the data. The "flags" parameter may be 0 for no flags, or may contain "LIBNBD_CMD_FLAG_REQ_ONE" meaning that the server should return only one extent per metadata context where that extent does not exceed "count" bytes; however, libnbd does not validate that the server obeyed the flag. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val block_status_filter : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> string list -> (string -> int64 -> extent array -> int ref -> int) -> unit (** [NBD.block_status_filter t ?flags count offset contexts extent64] send filtered block status command, with 64-bit callback Issue a filtered block status command to the NBD server. If supported by the server (see nbd_can_block_status_payload(3)), this causes metadata context information about blocks beginning from the specified offset to be returned, and with the result limited to just the contexts specified in "filter". Note that all strings in "filter" must be supported by nbd_can_meta_context(3). All other parameters to this function have the same semantics as in nbd_block_status_64(3); except that for convenience, unless was used to disable "LIBNBD_STRICT_AUTO_FLAG", libnbd ignores the presence or absence of the flag "LIBNBD_CMD_FLAG_PAYLOAD_LEN" in "flags", while correctly using the flag over the wire. By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val poll : t -> int -> int (** [NBD.poll t timeout] poll the handle once This is a simple implementation of poll(2) which is used internally by synchronous API calls. On success, it returns 0 if the "timeout" (in milliseconds) occurs, or 1 if the poll completed and the state machine progressed. Set "timeout" to -1 to block indefinitely (but be careful that eventual action is actually expected - for example, if the connection is established but there are no commands in flight, using an infinite timeout will permanently block). This function is mainly useful as an example of how you might integrate libnbd with your own main loop, rather than being intended as something you would use. *) val poll2 : t -> Unix.file_descr -> int -> int (** [NBD.poll2 t fd timeout] poll the handle once, with fd This is the same as nbd_poll(3), but an additional file descriptor parameter is passed. The additional fd is also polled (using "POLLIN"). One use for this is to wait for an eventfd(2). *) val aio_connect : t -> Unix.sockaddr -> unit (** [NBD.aio_connect t addr] connect to the NBD server Begin connecting to the NBD server. The "addr" and "addrlen" parameters specify the address of the socket to connect to. You can check if the connection attempt is still underway by calling nbd_aio_is_connecting(3). If nbd_set_opt_mode(3) is enabled, the connection is ready for manual option negotiation once nbd_aio_is_negotiating(3) returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once nbd_aio_is_ready(3) returns true. *) val aio_connect_uri : t -> string -> unit (** [NBD.aio_connect_uri t uri] connect to an NBD URI Begin connecting to the NBD URI "uri". Parameters behave as documented in nbd_connect_uri(3). You can check if the connection attempt is still underway by calling nbd_aio_is_connecting(3). If nbd_set_opt_mode(3) is enabled, the connection is ready for manual option negotiation once nbd_aio_is_negotiating(3) returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once nbd_aio_is_ready(3) returns true. *) val aio_connect_unix : t -> string -> unit (** [NBD.aio_connect_unix t unixsocket] connect to the NBD server over a Unix domain socket Begin connecting to the NBD server over Unix domain socket ("unixsocket"). Parameters behave as documented in nbd_connect_unix(3). You can check if the connection attempt is still underway by calling nbd_aio_is_connecting(3). If nbd_set_opt_mode(3) is enabled, the connection is ready for manual option negotiation once nbd_aio_is_negotiating(3) returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once nbd_aio_is_ready(3) returns true. *) val aio_connect_vsock : t -> int64 (* uint32_t *) -> int64 (* uint32_t *) -> unit (** [NBD.aio_connect_vsock t cid port] connect to the NBD server over AF_VSOCK socket Begin connecting to the NBD server over the "AF_VSOCK" protocol to the server "cid:port". Parameters behave as documented in nbd_connect_vsock(3). You can check if the connection attempt is still underway by calling nbd_aio_is_connecting(3). If nbd_set_opt_mode(3) is enabled, the connection is ready for manual option negotiation once nbd_aio_is_negotiating(3) returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once nbd_aio_is_ready(3) returns true. *) val aio_connect_tcp : t -> string -> string -> unit (** [NBD.aio_connect_tcp t hostname port] connect to the NBD server over a TCP port Begin connecting to the NBD server listening on "hostname:port". Parameters behave as documented in nbd_connect_tcp(3). You can check if the connection attempt is still underway by calling nbd_aio_is_connecting(3). If nbd_set_opt_mode(3) is enabled, the connection is ready for manual option negotiation once nbd_aio_is_negotiating(3) returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once nbd_aio_is_ready(3) returns true. *) val aio_connect_socket : t -> Unix.file_descr -> unit (** [NBD.aio_connect_socket t sock] connect directly to a connected socket Begin connecting to the connected socket "fd". Parameters behave as documented in nbd_connect_socket(3). You can check if the connection attempt is still underway by calling nbd_aio_is_connecting(3). If nbd_set_opt_mode(3) is enabled, the connection is ready for manual option negotiation once nbd_aio_is_negotiating(3) returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once nbd_aio_is_ready(3) returns true. *) val aio_connect_command : t -> string list -> unit (** [NBD.aio_connect_command t argv] connect to the NBD server Run the command as a subprocess and begin connecting to it over stdin/stdout. Parameters behave as documented in nbd_connect_command(3). You can check if the connection attempt is still underway by calling nbd_aio_is_connecting(3). If nbd_set_opt_mode(3) is enabled, the connection is ready for manual option negotiation once nbd_aio_is_negotiating(3) returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once nbd_aio_is_ready(3) returns true. *) val aio_connect_systemd_socket_activation : t -> string list -> unit (** [NBD.aio_connect_systemd_socket_activation t argv] connect using systemd socket activation Run the command as a subprocess and begin connecting to it using systemd socket activation. Parameters behave as documented in nbd_connect_systemd_socket_activation(3). You can check if the connection attempt is still underway by calling nbd_aio_is_connecting(3). If nbd_set_opt_mode(3) is enabled, the connection is ready for manual option negotiation once nbd_aio_is_negotiating(3) returns true; otherwise, the connection attempt will include the NBD handshake, and is ready for use once nbd_aio_is_ready(3) returns true. *) val aio_opt_go : ?completion:(int ref -> int) -> t -> unit (** [NBD.aio_opt_go t ?completion] end negotiation and move on to using an export Request that the server finish negotiation and move on to serving the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3). This can only be used if nbd_set_opt_mode(3) enabled option mode. To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that directly detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback; however it is also possible to indirectly detect an error when nbd_aio_is_negotiating(3) returns true. *) val aio_opt_abort : t -> unit (** [NBD.aio_opt_abort t] end negotiation and close the connection Request that the server finish negotiation, gracefully if possible, then close the connection. This can only be used if nbd_set_opt_mode(3) enabled option mode. To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. *) val aio_opt_starttls : ?completion:(int ref -> int) -> t -> unit (** [NBD.aio_opt_starttls t ?completion] request the server to initiate TLS Request that the server initiate a secure TLS connection, by sending "NBD_OPT_STARTTLS". This behaves like the synchronous counterpart nbd_opt_starttls(3), except that it does not wait for the server's response. To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. *) val aio_opt_extended_headers : ?completion:(int ref -> int) -> t -> unit (** [NBD.aio_opt_extended_headers t ?completion] request the server to enable extended headers Request that the server use extended headers, by sending "NBD_OPT_EXTENDED_HEADERS". This behaves like the synchronous counterpart nbd_opt_extended_headers(3), except that it does not wait for the server's response. To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. *) val aio_opt_structured_reply : ?completion:(int ref -> int) -> t -> unit (** [NBD.aio_opt_structured_reply t ?completion] request the server to enable structured replies Request that the server use structured replies, by sending "NBD_OPT_STRUCTURED_REPLY". This behaves like the synchronous counterpart nbd_opt_structured_reply(3), except that it does not wait for the server's response. To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. *) val aio_opt_list : ?completion:(int ref -> int) -> t -> (string -> string -> int) -> unit (** [NBD.aio_opt_list t ?completion list] request the server to list all exports during negotiation Request that the server list all exports that it supports. This can only be used if nbd_set_opt_mode(3) enabled option mode. To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. *) val aio_opt_info : ?completion:(int ref -> int) -> t -> unit (** [NBD.aio_opt_info t ?completion] request the server for information about an export Request that the server supply information about the export name previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3). This can only be used if nbd_set_opt_mode(3) enabled option mode. To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. *) val aio_opt_list_meta_context : ?completion:(int ref -> int) -> t -> (string -> int) -> int (** [NBD.aio_opt_list_meta_context t ?completion context] request list of available meta contexts, using implicit query Request that the server list available meta contexts associated with the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3), and with a list of queries from prior calls to nbd_add_meta_context(3) (see nbd_aio_opt_list_meta_context_queries(3) if you want to supply an explicit query list instead). This can only be used if nbd_set_opt_mode(3) enabled option mode. To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. *) val aio_opt_list_meta_context_queries : ?completion:(int ref -> int) -> t -> string list -> (string -> int) -> int (** [NBD.aio_opt_list_meta_context_queries t ?completion queries context] request list of available meta contexts, using explicit query Request that the server list available meta contexts associated with the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3), and with an explicit list of queries provided as a parameter (see nbd_aio_opt_list_meta_context(3) if you want to reuse an implicit query list instead). This can only be used if nbd_set_opt_mode(3) enabled option mode. To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. *) val aio_opt_set_meta_context : ?completion:(int ref -> int) -> t -> (string -> int) -> int (** [NBD.aio_opt_set_meta_context t ?completion context] select specific meta contexts, with implicit query list Request that the server supply all recognized meta contexts registered through prior calls to nbd_add_meta_context(3), in conjunction with the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3). This can only be used if nbd_set_opt_mode(3) enabled option mode. Normally, this function is redundant, as nbd_opt_go(3) automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with nbd_set_request_meta_context(3) to bypass the automatic context request normally performed by nbd_opt_go(3). To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. *) val aio_opt_set_meta_context_queries : ?completion:(int ref -> int) -> t -> string list -> (string -> int) -> int (** [NBD.aio_opt_set_meta_context_queries t ?completion queries context] select specific meta contexts, with explicit query list Request that the server supply all recognized meta contexts passed in through "queries", in conjunction with the export previously specified by the most recent nbd_set_export_name(3) or nbd_connect_uri(3). This can only be used if nbd_set_opt_mode(3) enabled option mode. Normally, this function is redundant, as nbd_opt_go(3) automatically does the same task if structured replies or extended headers have already been negotiated. But manual control over meta context requests can be useful for fine-grained testing of how a server handles unusual negotiation sequences. Often, use of this function is coupled with nbd_set_request_meta_context(3) to bypass the automatic context request normally performed by nbd_opt_go(3). To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false. Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3), except that it is automatically retired regardless of return value. Note that detecting whether the server returns an error (as is done by the return value of the synchronous counterpart) is only possible with a completion callback. *) val aio_pread : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> Buffer.t -> int64 -> cookie (** [NBD.aio_pread t ?completion ?flags buf offset] read from the NBD server Issue a read command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Note that you must ensure "buf" is valid until the command has completed. Furthermore, if the "error" parameter to "completion_callback" is set or if nbd_aio_command_completed(3) reports failure, and if nbd_get_pread_initialize(3) returns true, then libnbd sanitized "buf", but it is unspecified whether the contents of "buf" will read as zero or as partial results from the server. If nbd_get_pread_initialize(3) returns false, then libnbd did not sanitize "buf", and the contents are undefined on failure. Other parameters behave as documented in nbd_pread(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_pread_structured : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> Buffer.t -> int64 -> (bytes -> int64 -> int -> int ref -> int) -> cookie (** [NBD.aio_pread_structured t ?completion ?flags buf offset chunk] read from the NBD server Issue a read command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Note that you must ensure "buf" is valid until the command has completed. Furthermore, if the "error" parameter to "completion_callback" is set or if nbd_aio_command_completed(3) reports failure, and if nbd_get_pread_initialize(3) returns true, then libnbd sanitized "buf", but it is unspecified whether the contents of "buf" will read as zero or as partial results from the server. If nbd_get_pread_initialize(3) returns false, then libnbd did not sanitize "buf", and the contents are undefined on failure. Other parameters behave as documented in nbd_pread_structured(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_pwrite : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> Buffer.t -> int64 -> cookie (** [NBD.aio_pwrite t ?completion ?flags buf offset] write to the NBD server Issue a write command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Note that you must ensure "buf" is valid until the command has completed. Other parameters behave as documented in nbd_pwrite(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_disconnect : ?flags:CMD_FLAG.t list -> t -> unit (** [NBD.aio_disconnect t ?flags] disconnect from the NBD server Issue the disconnect command to the NBD server. This is not a normal command because NBD servers are not obliged to send a reply. Instead you should wait for nbd_aio_is_closed(3) to become true on the connection. Once this command is issued, you cannot issue any further commands. Although libnbd does not prevent you from issuing this command while still waiting on the replies to previous commands, the NBD protocol recommends that you wait until there are no other commands in flight (see nbd_aio_in_flight(3)), to give the server a better chance at a clean shutdown. The "flags" parameter must be 0 for now (it exists for future NBD protocol extensions). There is no direct synchronous counterpart; however, nbd_shutdown(3) will call this function if appropriate. *) val aio_flush : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> cookie (** [NBD.aio_flush t ?completion ?flags] send flush command to the NBD server Issue the flush command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in nbd_flush(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_trim : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> cookie (** [NBD.aio_trim t ?completion ?flags count offset] send trim command to the NBD server Issue a trim command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in nbd_trim(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_cache : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> cookie (** [NBD.aio_cache t ?completion ?flags count offset] send cache (prefetch) command to the NBD server Issue the cache (prefetch) command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in nbd_cache(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_zero : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> cookie (** [NBD.aio_zero t ?completion ?flags count offset] send write zeroes command to the NBD server Issue a write zeroes command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in nbd_zero(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_block_status : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> (string -> int64 -> int64 (* uint32_t *) array -> int ref -> int) -> cookie (** [NBD.aio_block_status t ?completion ?flags count offset extent] send block status command, with 32-bit callback Send the block status command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in nbd_block_status(3). This function is inherently limited to 32-bit values. If the server replies with a larger extent, the length of that extent will be truncated to just below 32 bits and any further extents from the server will be ignored. If the server replies with a status value larger than 32 bits (only possible when extended headers are in use), the callback function will be passed an "EOVERFLOW" error. To get the full extent information from a server that supports 64-bit extents, you must use nbd_aio_block_status_64(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_block_status_64 : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> (string -> int64 -> extent array -> int ref -> int) -> cookie (** [NBD.aio_block_status_64 t ?completion ?flags count offset extent64] send block status command, with 64-bit callback Send the block status command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in nbd_block_status_64(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_block_status_filter : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> string list -> (string -> int64 -> extent array -> int ref -> int) -> cookie (** [NBD.aio_block_status_filter t ?completion ?flags count offset contexts extent64] send filtered block status command to the NBD server Send a filtered block status command to the NBD server. To check if the command completed, call nbd_aio_command_completed(3). Or supply the optional "completion_callback" which will be invoked as described in "Completion callbacks" in libnbd(3). Other parameters behave as documented in nbd_block_status_filter(3). By default, libnbd will reject attempts to use this function with parameters that are likely to result in server failure, such as requesting an unknown command flag. The nbd_set_strict_mode(3) function can be used to alter which scenarios should await a server reply rather than failing fast. *) val aio_get_fd : t -> Unix.file_descr (** [NBD.aio_get_fd t] return file descriptor associated with this connection Return the underlying file descriptor associated with this connection. You can use this to check if the file descriptor is ready for reading or writing and call nbd_aio_notify_read(3) or nbd_aio_notify_write(3). See also nbd_aio_get_direction(3). Do not do anything else with the file descriptor. *) val aio_get_direction : t -> int (** [NBD.aio_get_direction t] return the read or write direction Return the current direction of this connection, which means whether we are next expecting to read data from the server, write data to the server, or both. It returns 0 We are not expected to interact with the server file descriptor from the current state. It is not worth attempting to use poll(2); if the connection is not dead, then state machine progress must instead come from some other means such as nbd_aio_connect(3). "LIBNBD_AIO_DIRECTION_READ" = 1 We are expected next to read from the server. If using poll(2) you would set "events = POLLIN". If "revents" returns "POLLIN" or "POLLHUP" you would then call nbd_aio_notify_read(3). Note that once libnbd reaches nbd_aio_is_ready(3), this direction is returned even when there are no commands in flight (see nbd_aio_in_flight(3)). In a single-threaded use of libnbd, it is not worth polling until after issuing a command, as otherwise the server will never wake up the poll. In a multi-threaded scenario, you can have one thread begin a polling loop prior to any commands, but any other thread that issues a command will need a way to kick the polling thread out of poll in case issuing the command changes the needed polling direction. Possible ways to do this include polling for activity on a pipe-to-self, or using pthread_kill(3) to send a signal that is masked except during ppoll(2). "LIBNBD_AIO_DIRECTION_WRITE" = 2 We are expected next to write to the server. If using poll(2) you would set "events = POLLOUT". If "revents" returns "POLLOUT" you would then call nbd_aio_notify_write(3). "LIBNBD_AIO_DIRECTION_BOTH" = 3 We are expected next to either read or write to the server. If using poll(2) you would set "events = POLLIN|POLLOUT". If only one of "POLLIN" or "POLLOUT" is returned, then see above. However, if both are returned, it is better to call only nbd_aio_notify_read(3), as processing the server's reply may change the state of the connection and invalidate the need to write more commands. *) val aio_notify_read : t -> unit (** [NBD.aio_notify_read t] notify that the connection is readable Send notification to the state machine that the connection is readable. Typically this is called after your main loop has detected that the file descriptor associated with this connection is readable. *) val aio_notify_write : t -> unit (** [NBD.aio_notify_write t] notify that the connection is writable Send notification to the state machine that the connection is writable. Typically this is called after your main loop has detected that the file descriptor associated with this connection is writable. *) val aio_is_created : t -> bool (** [NBD.aio_is_created t] check if the connection has just been created Return true if this connection has just been created. This is the state before the handle has started connecting to a server. In this state the handle can start to be connected by calling functions such as nbd_aio_connect(3). *) val aio_is_connecting : t -> bool (** [NBD.aio_is_connecting t] check if the connection is connecting or handshaking Return true if this connection is connecting to the server or in the process of handshaking and negotiating options which happens before the handle becomes ready to issue commands (see nbd_aio_is_ready(3)). *) val aio_is_negotiating : t -> bool (** [NBD.aio_is_negotiating t] check if connection is ready to send handshake option Return true if this connection is ready to start another option negotiation command while handshaking with the server. An option command will move back to the connecting state (see nbd_aio_is_connecting(3)). Note that this state cannot be reached unless requested by nbd_set_opt_mode(3), and even then it only works with newstyle servers; an oldstyle server will skip straight to nbd_aio_is_ready(3). *) val aio_is_ready : t -> bool (** [NBD.aio_is_ready t] check if the connection is in the ready state Return true if this connection is connected to the NBD server, the handshake has completed, and the connection is idle or waiting for a reply. In this state the handle is ready to issue commands. *) val aio_is_processing : t -> bool (** [NBD.aio_is_processing t] check if the connection is processing a command Return true if this connection is connected to the NBD server, the handshake has completed, and the connection is processing commands (either writing out a request or reading a reply). Note the ready state (nbd_aio_is_ready(3)) is not included. In the ready state commands may be *in flight* (the *server* is processing them), but libnbd is not processing them. *) val aio_is_dead : t -> bool (** [NBD.aio_is_dead t] check if the connection is dead Return true if the connection has encountered a fatal error and is dead. In this state the handle may only be closed. There is no way to recover a handle from the dead state. *) val aio_is_closed : t -> bool (** [NBD.aio_is_closed t] check if the connection is closed Return true if the connection has closed. There is no way to reconnect a closed connection. Instead you must close the whole handle. *) val aio_command_completed : t -> int64 -> bool (** [NBD.aio_command_completed t cookie] check if the command completed Return true if the command completed. If this function returns true then the command was successful and it has been retired. Return false if the command is still in flight. This can also fail with an error in case the command failed (in this case the command is also retired). A command is retired either via this command, or by using a completion callback which returns 1. The "cookie" parameter is the positive unique 64 bit cookie for the command, as returned by a call such as nbd_aio_pread(3). *) val aio_peek_command_completed : t -> int64 (** [NBD.aio_peek_command_completed t] check if any command has completed Return the unique positive 64 bit cookie of the first non-retired but completed command, 0 if there are in-flight commands but none of them are awaiting retirement, or -1 on error including when there are no in-flight commands. Any cookie returned by this function must still be passed to nbd_aio_command_completed(3) to actually retire the command and learn whether the command was successful. *) val aio_in_flight : t -> int (** [NBD.aio_in_flight t] check how many aio commands are still in flight Return the number of in-flight aio commands that are still awaiting a response from the server before they can be retired. If this returns a non-zero value when requesting a disconnect from the server (see nbd_aio_disconnect(3) and nbd_shutdown(3)), libnbd does not try to wait for those commands to complete gracefully; if the server strands commands while shutting down, nbd_aio_command_completed(3) will report those commands as failed with a status of "ENOTCONN". *) val connection_state : t -> string (** [NBD.connection_state t] return string describing the state of the connection Returns a descriptive string for the state of the connection. This can be used for debugging or troubleshooting, but you should not rely on the state of connections since it may change in future versions. *) val get_package_name : t -> string (** [NBD.get_package_name t] return the name of the library Returns the name of the library, always "libnbd" unless the library was modified with another name at compile time. *) val get_version : t -> string (** [NBD.get_version t] return the version of the library Return the version of libnbd. This is returned as a string in the form "major.minor.release" where each of major, minor and release is a small positive integer. For example: minor ↓ "1.0.3" ↑ ↑ major release major = 0 The major number was 0 for the early experimental versions of libnbd where we still had an unstable API. major = 1 The major number is 1 for the versions of libnbd with a long-term stable API and ABI. It is not anticipated that major will be any number other than 1. minor = 0, 2, ... (even) The minor number is even for stable releases. minor = 1, 3, ... (odd) The minor number is odd for development versions. Note that new APIs added in a development version remain experimental and subject to change in that branch until they appear in a stable release. release The release number is incremented for each release along a particular branch. *) val kill_subprocess : t -> int -> unit (** [NBD.kill_subprocess t signum] kill server running as a subprocess This call may be used to kill the server running as a subprocess that was previously created using nbd_connect_command(3). You do not need to use this call. It is only needed if the server does not exit when the socket is closed. The "signum" parameter is the optional signal number to send (see signal(7)). If "signum" is 0 then "SIGTERM" is sent. *) val supports_tls : t -> bool (** [NBD.supports_tls t] true if libnbd was compiled with support for TLS Returns true if libnbd was compiled with gnutls which is required to support TLS encryption, or false if not. *) val supports_vsock : t -> bool (** [NBD.supports_vsock t] true if libnbd was compiled with support for AF_VSOCK Returns true if libnbd was compiled with support for the "AF_VSOCK" family of sockets, or false if not. Note that on the Linux operating system, this returns true if there is compile-time support, but you may still need runtime support for some aspects of AF_VSOCK usage; for example, use of "VMADDR_CID_LOCAL" as the server name requires that the *vsock_loopback* kernel module is loaded. *) val supports_uri : t -> bool (** [NBD.supports_uri t] true if libnbd was compiled with support for NBD URIs Returns true if libnbd was compiled with libxml2 which is required to support NBD URIs, or false if not. *) val get_uri : t -> string (** [NBD.get_uri t] construct an NBD URI for a connection This makes a best effort attempt to construct an NBD URI which could be used to connect back to the same server (using nbd_connect_uri(3)). In some cases there is not enough information in the handle to successfully create a URI (eg. if you connected with nbd_connect_socket(3)). In such cases the call returns "NULL" and further diagnostic information is available via nbd_get_errno(3) and nbd_get_error(3) as usual. Even if a URI is returned it is not guaranteed to work, and it may not be optimal. nbdinfo(1) *--uri* option is a way to access this API from shell scripts. *) libnbd-1.20.3/ocaml/NBD.ml0000444000175000017500000004746714603303752010563 (* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) exception Error of string * Unix.error option exception Closed of string type cookie = int64 type extent = int64 * int64 (* Give the exceptions names so that they can be raised from the C code. *) let () = Callback.register_exception "nbd_internal_ocaml_error" (Error ("", None)); Callback.register_exception "nbd_internal_ocaml_closed" (Closed "") module TLS = struct type t = | DISABLE | ALLOW | REQUIRE | UNKNOWN of int end module SIZE = struct type t = | MINIMUM | PREFERRED | MAXIMUM | PAYLOAD | UNKNOWN of int end module CMD_FLAG = struct type t = | FUA | NO_HOLE | DF | REQ_ONE | FAST_ZERO | PAYLOAD_LEN | UNKNOWN of int let mask = [ FUA; NO_HOLE; DF; REQ_ONE; FAST_ZERO; PAYLOAD_LEN; ] end module HANDSHAKE_FLAG = struct type t = | FIXED_NEWSTYLE | NO_ZEROES | UNKNOWN of int let mask = [ FIXED_NEWSTYLE; NO_ZEROES; ] end module STRICT = struct type t = | COMMANDS | FLAGS | BOUNDS | ZERO_SIZE | ALIGN | PAYLOAD | AUTO_FLAG | UNKNOWN of int let mask = [ COMMANDS; FLAGS; BOUNDS; ZERO_SIZE; ALIGN; PAYLOAD; AUTO_FLAG; ] end module ALLOW_TRANSPORT = struct type t = | TCP | UNIX | VSOCK | UNKNOWN of int let mask = [ TCP; UNIX; VSOCK; ] end module SHUTDOWN = struct type t = | ABANDON_PENDING | UNKNOWN of int let mask = [ ABANDON_PENDING; ] end let aio_direction_read = 1_l let aio_direction_write = 2_l let aio_direction_both = 3_l let read_data = 1_l let read_hole = 2_l let read_error = 3_l let namespace_base = "base:" let context_base_allocation = "base:allocation" let state_hole = 1_l let state_zero = 2_l let namespace_qemu = "qemu:" let context_qemu_dirty_bitmap = "qemu:dirty-bitmap:" let state_dirty = 1_l let context_qemu_allocation_depth = "qemu:allocation-depth" module Buffer = struct type t = (char, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t let alloc = Bigarray.Array1.create Bigarray.Char Bigarray.c_layout let size = Bigarray.Array1.dim external to_bytes : t -> bytes = "nbd_internal_ocaml_buffer_to_bytes" external to_string : t -> string = "nbd_internal_ocaml_buffer_to_bytes" external _of_bytes : bytes -> t -> unit = "nbd_internal_ocaml_buffer_of_bytes" external _of_string : string -> t -> unit = "nbd_internal_ocaml_buffer_of_bytes" let of_bytes b = let buf = alloc (Bytes.length b) in _of_bytes b buf; buf let of_string s = let buf = alloc (String.length s) in _of_string s buf; buf end external errno_of_unix_error : Unix.error -> int = "nbd_internal_code_of_unix_error" [@@noalloc] type t external _create : unit -> t = "nbd_internal_ocaml_nbd_create" external close : t -> unit = "nbd_internal_ocaml_nbd_close" let create () = let nbd = _create () in Gc.finalise close nbd; nbd let with_handle f = let nbd = create () in try let r = f nbd in close nbd; r with exn -> close nbd; raise exn external set_debug : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_debug" external get_debug : t -> bool = "nbd_internal_ocaml_nbd_get_debug" external set_debug_callback : t -> (string -> string -> int) -> unit = "nbd_internal_ocaml_nbd_set_debug_callback" external clear_debug_callback : t -> unit = "nbd_internal_ocaml_nbd_clear_debug_callback" external stats_bytes_sent : t -> int64 = "nbd_internal_ocaml_nbd_stats_bytes_sent" external stats_chunks_sent : t -> int64 = "nbd_internal_ocaml_nbd_stats_chunks_sent" external stats_bytes_received : t -> int64 = "nbd_internal_ocaml_nbd_stats_bytes_received" external stats_chunks_received : t -> int64 = "nbd_internal_ocaml_nbd_stats_chunks_received" external set_handle_name : t -> string -> unit = "nbd_internal_ocaml_nbd_set_handle_name" external get_handle_name : t -> string = "nbd_internal_ocaml_nbd_get_handle_name" external set_private_data : t -> int -> int = "nbd_internal_ocaml_nbd_set_private_data" external get_private_data : t -> int = "nbd_internal_ocaml_nbd_get_private_data" external set_export_name : t -> string -> unit = "nbd_internal_ocaml_nbd_set_export_name" external get_export_name : t -> string = "nbd_internal_ocaml_nbd_get_export_name" external set_request_block_size : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_request_block_size" external get_request_block_size : t -> bool = "nbd_internal_ocaml_nbd_get_request_block_size" external set_full_info : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_full_info" external get_full_info : t -> bool = "nbd_internal_ocaml_nbd_get_full_info" external get_canonical_export_name : t -> string = "nbd_internal_ocaml_nbd_get_canonical_export_name" external get_export_description : t -> string = "nbd_internal_ocaml_nbd_get_export_description" external set_tls : t -> TLS.t -> unit = "nbd_internal_ocaml_nbd_set_tls" external get_tls : t -> TLS.t = "nbd_internal_ocaml_nbd_get_tls" external get_tls_negotiated : t -> bool = "nbd_internal_ocaml_nbd_get_tls_negotiated" external set_tls_certificates : t -> string -> unit = "nbd_internal_ocaml_nbd_set_tls_certificates" external set_tls_verify_peer : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_tls_verify_peer" external get_tls_verify_peer : t -> bool = "nbd_internal_ocaml_nbd_get_tls_verify_peer" external set_tls_username : t -> string -> unit = "nbd_internal_ocaml_nbd_set_tls_username" external get_tls_username : t -> string = "nbd_internal_ocaml_nbd_get_tls_username" external set_tls_psk_file : t -> string -> unit = "nbd_internal_ocaml_nbd_set_tls_psk_file" external set_request_extended_headers : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_request_extended_headers" external get_request_extended_headers : t -> bool = "nbd_internal_ocaml_nbd_get_request_extended_headers" external get_extended_headers_negotiated : t -> bool = "nbd_internal_ocaml_nbd_get_extended_headers_negotiated" external set_request_structured_replies : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_request_structured_replies" external get_request_structured_replies : t -> bool = "nbd_internal_ocaml_nbd_get_request_structured_replies" external get_structured_replies_negotiated : t -> bool = "nbd_internal_ocaml_nbd_get_structured_replies_negotiated" external set_request_meta_context : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_request_meta_context" external get_request_meta_context : t -> bool = "nbd_internal_ocaml_nbd_get_request_meta_context" external set_handshake_flags : t -> HANDSHAKE_FLAG.t list -> unit = "nbd_internal_ocaml_nbd_set_handshake_flags" external get_handshake_flags : t -> HANDSHAKE_FLAG.t list = "nbd_internal_ocaml_nbd_get_handshake_flags" external set_pread_initialize : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_pread_initialize" external get_pread_initialize : t -> bool = "nbd_internal_ocaml_nbd_get_pread_initialize" external set_strict_mode : t -> STRICT.t list -> unit = "nbd_internal_ocaml_nbd_set_strict_mode" external get_strict_mode : t -> STRICT.t list = "nbd_internal_ocaml_nbd_get_strict_mode" external set_opt_mode : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_opt_mode" external get_opt_mode : t -> bool = "nbd_internal_ocaml_nbd_get_opt_mode" external opt_go : t -> unit = "nbd_internal_ocaml_nbd_opt_go" external opt_abort : t -> unit = "nbd_internal_ocaml_nbd_opt_abort" external opt_starttls : t -> bool = "nbd_internal_ocaml_nbd_opt_starttls" external opt_extended_headers : t -> bool = "nbd_internal_ocaml_nbd_opt_extended_headers" external opt_structured_reply : t -> bool = "nbd_internal_ocaml_nbd_opt_structured_reply" external opt_list : t -> (string -> string -> int) -> int = "nbd_internal_ocaml_nbd_opt_list" external opt_info : t -> unit = "nbd_internal_ocaml_nbd_opt_info" external opt_list_meta_context : t -> (string -> int) -> int = "nbd_internal_ocaml_nbd_opt_list_meta_context" external opt_list_meta_context_queries : t -> string list -> (string -> int) -> int = "nbd_internal_ocaml_nbd_opt_list_meta_context_queries" external opt_set_meta_context : t -> (string -> int) -> int = "nbd_internal_ocaml_nbd_opt_set_meta_context" external opt_set_meta_context_queries : t -> string list -> (string -> int) -> int = "nbd_internal_ocaml_nbd_opt_set_meta_context_queries" external add_meta_context : t -> string -> unit = "nbd_internal_ocaml_nbd_add_meta_context" external get_nr_meta_contexts : t -> int = "nbd_internal_ocaml_nbd_get_nr_meta_contexts" external get_meta_context : t -> int -> string = "nbd_internal_ocaml_nbd_get_meta_context" external clear_meta_contexts : t -> unit = "nbd_internal_ocaml_nbd_clear_meta_contexts" external set_uri_allow_transports : t -> ALLOW_TRANSPORT.t list -> unit = "nbd_internal_ocaml_nbd_set_uri_allow_transports" external set_uri_allow_tls : t -> TLS.t -> unit = "nbd_internal_ocaml_nbd_set_uri_allow_tls" external set_uri_allow_local_file : t -> bool -> unit = "nbd_internal_ocaml_nbd_set_uri_allow_local_file" external connect_uri : t -> string -> unit = "nbd_internal_ocaml_nbd_connect_uri" external connect_unix : t -> string -> unit = "nbd_internal_ocaml_nbd_connect_unix" external connect_vsock : t -> int64 (* uint32_t *) -> int64 (* uint32_t *) -> unit = "nbd_internal_ocaml_nbd_connect_vsock" external connect_tcp : t -> string -> string -> unit = "nbd_internal_ocaml_nbd_connect_tcp" external connect_socket : t -> Unix.file_descr -> unit = "nbd_internal_ocaml_nbd_connect_socket" external connect_command : t -> string list -> unit = "nbd_internal_ocaml_nbd_connect_command" external connect_systemd_socket_activation : t -> string list -> unit = "nbd_internal_ocaml_nbd_connect_systemd_socket_activation" external set_socket_activation_name : t -> string -> unit = "nbd_internal_ocaml_nbd_set_socket_activation_name" external get_socket_activation_name : t -> string = "nbd_internal_ocaml_nbd_get_socket_activation_name" external is_read_only : t -> bool = "nbd_internal_ocaml_nbd_is_read_only" external can_flush : t -> bool = "nbd_internal_ocaml_nbd_can_flush" external can_fua : t -> bool = "nbd_internal_ocaml_nbd_can_fua" external is_rotational : t -> bool = "nbd_internal_ocaml_nbd_is_rotational" external can_trim : t -> bool = "nbd_internal_ocaml_nbd_can_trim" external can_zero : t -> bool = "nbd_internal_ocaml_nbd_can_zero" external can_fast_zero : t -> bool = "nbd_internal_ocaml_nbd_can_fast_zero" external can_block_status_payload : t -> bool = "nbd_internal_ocaml_nbd_can_block_status_payload" external can_df : t -> bool = "nbd_internal_ocaml_nbd_can_df" external can_multi_conn : t -> bool = "nbd_internal_ocaml_nbd_can_multi_conn" external can_cache : t -> bool = "nbd_internal_ocaml_nbd_can_cache" external can_meta_context : t -> string -> bool = "nbd_internal_ocaml_nbd_can_meta_context" external get_protocol : t -> string = "nbd_internal_ocaml_nbd_get_protocol" external get_size : t -> int64 = "nbd_internal_ocaml_nbd_get_size" external get_block_size : t -> SIZE.t -> int64 = "nbd_internal_ocaml_nbd_get_block_size" external pread : ?flags:CMD_FLAG.t list -> t -> bytes -> int64 -> unit = "nbd_internal_ocaml_nbd_pread" external pread_structured : ?flags:CMD_FLAG.t list -> t -> bytes -> int64 -> (bytes -> int64 -> int -> int ref -> int) -> unit = "nbd_internal_ocaml_nbd_pread_structured" external pwrite : ?flags:CMD_FLAG.t list -> t -> bytes -> int64 -> unit = "nbd_internal_ocaml_nbd_pwrite" external shutdown : ?flags:SHUTDOWN.t list -> t -> unit = "nbd_internal_ocaml_nbd_shutdown" external flush : ?flags:CMD_FLAG.t list -> t -> unit = "nbd_internal_ocaml_nbd_flush" external trim : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> unit = "nbd_internal_ocaml_nbd_trim" external cache : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> unit = "nbd_internal_ocaml_nbd_cache" external zero : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> unit = "nbd_internal_ocaml_nbd_zero" external block_status : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> (string -> int64 -> int64 (* uint32_t *) array -> int ref -> int) -> unit = "nbd_internal_ocaml_nbd_block_status" external block_status_64 : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> (string -> int64 -> extent array -> int ref -> int) -> unit = "nbd_internal_ocaml_nbd_block_status_64" external block_status_filter : ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> string list -> (string -> int64 -> extent array -> int ref -> int) -> unit = "nbd_internal_ocaml_nbd_block_status_filter_byte" "nbd_internal_ocaml_nbd_block_status_filter" external poll : t -> int -> int = "nbd_internal_ocaml_nbd_poll" external poll2 : t -> Unix.file_descr -> int -> int = "nbd_internal_ocaml_nbd_poll2" external aio_connect : t -> Unix.sockaddr -> unit = "nbd_internal_ocaml_nbd_aio_connect" external aio_connect_uri : t -> string -> unit = "nbd_internal_ocaml_nbd_aio_connect_uri" external aio_connect_unix : t -> string -> unit = "nbd_internal_ocaml_nbd_aio_connect_unix" external aio_connect_vsock : t -> int64 (* uint32_t *) -> int64 (* uint32_t *) -> unit = "nbd_internal_ocaml_nbd_aio_connect_vsock" external aio_connect_tcp : t -> string -> string -> unit = "nbd_internal_ocaml_nbd_aio_connect_tcp" external aio_connect_socket : t -> Unix.file_descr -> unit = "nbd_internal_ocaml_nbd_aio_connect_socket" external aio_connect_command : t -> string list -> unit = "nbd_internal_ocaml_nbd_aio_connect_command" external aio_connect_systemd_socket_activation : t -> string list -> unit = "nbd_internal_ocaml_nbd_aio_connect_systemd_socket_activation" external aio_opt_go : ?completion:(int ref -> int) -> t -> unit = "nbd_internal_ocaml_nbd_aio_opt_go" external aio_opt_abort : t -> unit = "nbd_internal_ocaml_nbd_aio_opt_abort" external aio_opt_starttls : ?completion:(int ref -> int) -> t -> unit = "nbd_internal_ocaml_nbd_aio_opt_starttls" external aio_opt_extended_headers : ?completion:(int ref -> int) -> t -> unit = "nbd_internal_ocaml_nbd_aio_opt_extended_headers" external aio_opt_structured_reply : ?completion:(int ref -> int) -> t -> unit = "nbd_internal_ocaml_nbd_aio_opt_structured_reply" external aio_opt_list : ?completion:(int ref -> int) -> t -> (string -> string -> int) -> unit = "nbd_internal_ocaml_nbd_aio_opt_list" external aio_opt_info : ?completion:(int ref -> int) -> t -> unit = "nbd_internal_ocaml_nbd_aio_opt_info" external aio_opt_list_meta_context : ?completion:(int ref -> int) -> t -> (string -> int) -> int = "nbd_internal_ocaml_nbd_aio_opt_list_meta_context" external aio_opt_list_meta_context_queries : ?completion:(int ref -> int) -> t -> string list -> (string -> int) -> int = "nbd_internal_ocaml_nbd_aio_opt_list_meta_context_queries" external aio_opt_set_meta_context : ?completion:(int ref -> int) -> t -> (string -> int) -> int = "nbd_internal_ocaml_nbd_aio_opt_set_meta_context" external aio_opt_set_meta_context_queries : ?completion:(int ref -> int) -> t -> string list -> (string -> int) -> int = "nbd_internal_ocaml_nbd_aio_opt_set_meta_context_queries" external aio_pread : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> Buffer.t -> int64 -> cookie = "nbd_internal_ocaml_nbd_aio_pread" external aio_pread_structured : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> Buffer.t -> int64 -> (bytes -> int64 -> int -> int ref -> int) -> cookie = "nbd_internal_ocaml_nbd_aio_pread_structured_byte" "nbd_internal_ocaml_nbd_aio_pread_structured" external aio_pwrite : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> Buffer.t -> int64 -> cookie = "nbd_internal_ocaml_nbd_aio_pwrite" external aio_disconnect : ?flags:CMD_FLAG.t list -> t -> unit = "nbd_internal_ocaml_nbd_aio_disconnect" external aio_flush : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> cookie = "nbd_internal_ocaml_nbd_aio_flush" external aio_trim : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> cookie = "nbd_internal_ocaml_nbd_aio_trim" external aio_cache : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> cookie = "nbd_internal_ocaml_nbd_aio_cache" external aio_zero : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> cookie = "nbd_internal_ocaml_nbd_aio_zero" external aio_block_status : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> (string -> int64 -> int64 (* uint32_t *) array -> int ref -> int) -> cookie = "nbd_internal_ocaml_nbd_aio_block_status_byte" "nbd_internal_ocaml_nbd_aio_block_status" external aio_block_status_64 : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> (string -> int64 -> extent array -> int ref -> int) -> cookie = "nbd_internal_ocaml_nbd_aio_block_status_64_byte" "nbd_internal_ocaml_nbd_aio_block_status_64" external aio_block_status_filter : ?completion:(int ref -> int) -> ?flags:CMD_FLAG.t list -> t -> int64 -> int64 -> string list -> (string -> int64 -> extent array -> int ref -> int) -> cookie = "nbd_internal_ocaml_nbd_aio_block_status_filter_byte" "nbd_internal_ocaml_nbd_aio_block_status_filter" external aio_get_fd : t -> Unix.file_descr = "nbd_internal_ocaml_nbd_aio_get_fd" external aio_get_direction : t -> int = "nbd_internal_ocaml_nbd_aio_get_direction" external aio_notify_read : t -> unit = "nbd_internal_ocaml_nbd_aio_notify_read" external aio_notify_write : t -> unit = "nbd_internal_ocaml_nbd_aio_notify_write" external aio_is_created : t -> bool = "nbd_internal_ocaml_nbd_aio_is_created" external aio_is_connecting : t -> bool = "nbd_internal_ocaml_nbd_aio_is_connecting" external aio_is_negotiating : t -> bool = "nbd_internal_ocaml_nbd_aio_is_negotiating" external aio_is_ready : t -> bool = "nbd_internal_ocaml_nbd_aio_is_ready" external aio_is_processing : t -> bool = "nbd_internal_ocaml_nbd_aio_is_processing" external aio_is_dead : t -> bool = "nbd_internal_ocaml_nbd_aio_is_dead" external aio_is_closed : t -> bool = "nbd_internal_ocaml_nbd_aio_is_closed" external aio_command_completed : t -> int64 -> bool = "nbd_internal_ocaml_nbd_aio_command_completed" external aio_peek_command_completed : t -> int64 = "nbd_internal_ocaml_nbd_aio_peek_command_completed" external aio_in_flight : t -> int = "nbd_internal_ocaml_nbd_aio_in_flight" external connection_state : t -> string = "nbd_internal_ocaml_nbd_connection_state" external get_package_name : t -> string = "nbd_internal_ocaml_nbd_get_package_name" external get_version : t -> string = "nbd_internal_ocaml_nbd_get_version" external kill_subprocess : t -> int -> unit = "nbd_internal_ocaml_nbd_kill_subprocess" external supports_tls : t -> bool = "nbd_internal_ocaml_nbd_supports_tls" external supports_vsock : t -> bool = "nbd_internal_ocaml_nbd_supports_vsock" external supports_uri : t -> bool = "nbd_internal_ocaml_nbd_supports_uri" external get_uri : t -> string = "nbd_internal_ocaml_nbd_get_uri" libnbd-1.20.3/ocaml/libnbd-ocaml.pod0000644000175000017500000000444114525371754012652 =head1 NAME libnbd-ocaml - how to use libnbd from OCaml =head1 SYNOPSIS let nbd = NBD.create () in NBD.connect_uri nbd "nbd://localhost"; let size = NBD.get_size nbd in printf "%Ld\n" size; NBD.close () Alternate syntax which ensures that close is called even if an exception is thrown: let size = NBD.with_handle ( fun nbd -> NBD.connect_uri nbd "nbd://localhost"; NBD.get_size nbd ) in printf "%Ld\n" size To compile: ocamlopt -I +nbd mlnbd.cmxa prog.ml -o prog or using findlib: ocamlfind opt -package nbd -linkpkg prog.ml -o prog =head1 DESCRIPTION This manual page documents how to use libnbd to access Network Block Device (NBD) servers from the OCaml programming language. The OCaml bindings work very similarly to the C bindings so you should start by reading L. For OCaml API documentation see L. =head1 HANDLES Create a libnbd handle of type C by calling S>. You can either close the handle explicitly by calling C or it will be closed automatically when it is garbage collected. If you call any other method on a handle which you have explicitly closed then the API will throw an C exception. C can be used to make sure the handle is closed in a timely manner. See the example in the L above. =head1 ERRORS Libnbd errors are turned automatically into exceptions of type: NBD.Error (str, Unix.error option) The first exception parameter is a string which is the printable error message. The second is the OCaml C code, if available (see L). =head2 Callbacks with "int ref" error parameter Some callbacks take an error parameter of type C, corresponding to the C passed to those callbacks in C. See also: L If an error occurs during the callback you can update the C in the reference, setting it to a I. To convert an OCaml C into a C-compatible errno call C. =head1 EXAMPLES This directory contains examples written in OCaml: L =head1 SEE ALSO L, L. =head1 AUTHORS Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/ocaml/examples/0000755000175000017500000000000014675532654011522 5libnbd-1.20.3/ocaml/examples/Makefile.am0000644000175000017500000000354214577645565013511 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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This means that you can copy, use, adapt and modify them without any significant restrictions. You can also combine them with proprietary code or include them in code that is distributed under other open source licenses. ---------------------------------------------------------------------- libnbd examples Copyright Red Hat Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Red Hat nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. libnbd-1.20.3/ocaml/examples/asynch_copy.ml0000664000175000017500000000666714525371754014330 open Unix open Printf let (+^) = Int64.add let (-^) = Int64.sub let bs = 65536_L let max_reads_in_flight = 16 let dir_is_read dir = dir land (Int32.to_int NBD.aio_direction_read) <> 0 let dir_is_write dir = dir land (Int32.to_int NBD.aio_direction_write) <> 0 (* Copy between two libnbd handles using aynchronous I/O (AIO). *) let asynch_copy src dst = let size = NBD.get_size dst in (* This is our reading position in the source. *) let soff = ref 0_L in (* This callback is called when any pread from the source has * completed. (buf, size) contains the block of data. This * builds up a queue of write commands which are sent on the * next iteration of the loop. *) let writes = ref [] in let read_completed buf offset _ = (* Get ready to issue a write command. *) writes := (buf, offset) :: !writes; (* By returning 1 here we auto-retire the pread command. *) 1 in (* This callback is called when any pwrite to the destination * has completed. *) let write_completed buf _ = (* By returning 1 here we auto-retire the pwrite command. *) 1 in (* The main loop which runs until we have finished reading and * there are no more commands in flight. *) while !soff < size || NBD.aio_in_flight src > 0 || NBD.aio_in_flight dst > 0 do (* If we're able to submit more reads from the source then do so now. *) if !soff < size && NBD.aio_in_flight src < max_reads_in_flight then ( let bs = min bs (size -^ !soff) in let buf = NBD.Buffer.alloc (Int64.to_int bs) in ignore (NBD.aio_pread src buf !soff ~completion:(read_completed buf !soff)); soff := !soff +^ bs ); (* If there are any write commands waiting to be issued to * the destination, send them now. *) List.iter ( fun (buf, offset) -> (* Note the size of the write is implicitly stored in buf. *) ignore (NBD.aio_pwrite dst buf offset ~completion:(write_completed buf)) ) !writes; writes := []; let sfd = NBD.aio_get_fd src and dfd = NBD.aio_get_fd dst and sdir = NBD.aio_get_direction src and ddir = NBD.aio_get_direction dst in let rfds = if dir_is_read sdir then [sfd] else [] in let rfds = if dir_is_read ddir then dfd :: rfds else rfds in let wfds = if dir_is_write sdir then [sfd] else [] in let wfds = if dir_is_write ddir then dfd :: wfds else wfds in let rfds, wfds, _ = select rfds wfds [] (-1.0) in (* These can change since we slept in the select, so we must * check them again. *) let sdir = NBD.aio_get_direction src and ddir = NBD.aio_get_direction dst in if List.mem sfd rfds && dir_is_read sdir then NBD.aio_notify_read src else if List.mem sfd wfds && dir_is_write sdir then NBD.aio_notify_write src else if List.mem dfd rfds && dir_is_read ddir then NBD.aio_notify_read dst else if List.mem dfd wfds && dir_is_write ddir then NBD.aio_notify_write dst done let () = let src = NBD.create () in NBD.set_handle_name src "src"; let dst = NBD.create () in NBD.set_handle_name dst "dst"; NBD.connect_command src ["nbdkit"; "-s"; "--exit-with-parent"; "-r"; "pattern"; "size=512M"]; NBD.connect_command dst ["nbdkit"; "-s"; "--exit-with-parent"; "memory"; "size=512M"]; asynch_copy src dst (* This is a good way to find memory leaks or corruption. *) let () = Gc.compact () libnbd-1.20.3/ocaml/examples/extents.ml0000644000175000017500000000261714525371754013470 open Printf let () = NBD.with_handle ( fun nbd -> NBD.add_meta_context nbd "base:allocation"; NBD.connect_command nbd ["nbdkit"; "-s"; "--exit-with-parent"; "-r"; "sparse-random"; "8G"]; (* Read the extents and print them. *) let size = NBD.get_size nbd in let fetch_offset = ref 0_L in while !fetch_offset < size do let remaining = Int64.sub size !fetch_offset in let fetch_size = min remaining 0x8000_0000_L in NBD.block_status nbd fetch_size !fetch_offset ( fun meta _ entries err -> printf "nbd_block_status callback: meta=%s err=%d\n" meta !err; if meta = "base:allocation" then ( printf "index\t%16s %16s %s\n" "offset" "length" "flags"; for i = 0 to Array.length entries / 2 - 1 do let len = entries.(i*2) and flags = match entries.(i*2+1) with | 0_L -> "data" | 1_L -> "hole" | 2_L -> "zero" | 3_L -> "hole+zero" | unknown -> sprintf "unknown (%Ld)" unknown in printf "%d:\t%16Ld %16Ld %s\n" i !fetch_offset len flags; fetch_offset := Int64.add !fetch_offset len done; ); 0 ) (* NBD.block_status *) done ) libnbd-1.20.3/ocaml/examples/extents64.ml0000644000175000017500000000301414525371754013632 open Printf let () = NBD.with_handle ( fun nbd -> NBD.add_meta_context nbd "base:allocation"; NBD.connect_command nbd ["nbdkit"; "-s"; "--exit-with-parent"; "-r"; "sparse-random"; "8G"]; (* Read the extents and print them. *) let size = NBD.get_size nbd in let cap = match NBD.get_extended_headers_negotiated nbd with | true -> size | false -> 0x8000_0000_L in let fetch_offset = ref 0_L in while !fetch_offset < size do let remaining = Int64.sub size !fetch_offset in let fetch_size = min remaining cap in NBD.block_status_64 nbd fetch_size !fetch_offset ( fun meta _ entries err -> printf "nbd_block_status callback: meta=%s err=%d\n" meta !err; if meta = "base:allocation" then ( printf "index\t%16s %16s %s\n" "offset" "length" "flags"; for i = 0 to Array.length entries - 1 do let len = fst entries.(i) and flags = match snd entries.(i) with | 0_L -> "data" | 1_L -> "hole" | 2_L -> "zero" | 3_L -> "hole+zero" | unknown -> sprintf "unknown (%Ld)" unknown in printf "%d:\t%16Ld %16Ld %s\n" i !fetch_offset len flags; fetch_offset := Int64.add !fetch_offset len done; ); 0 ) (* NBD.block_status *) done ) libnbd-1.20.3/ocaml/examples/get_size.ml0000644000175000017500000000110014525371754013571 (* This example is similar to nbdinfo --size . It connects to an * NBD URI and queries the size of the default export. To try it out * do this from the top build directory: * * nbdkit -U - null 1G --run './run ocaml/examples/get_size.opt "$uri"' *) open Printf let () = if Array.length Sys.argv <> 2 then failwith "usage: get_size URI"; let uri = Sys.argv.(1) in NBD.with_handle ( fun nbd -> (* Connect to the NBD URI. *) NBD.connect_uri nbd uri; let size = NBD.get_size nbd in printf "uri = %s size = %Ld\n" uri size ) libnbd-1.20.3/ocaml/examples/open_qcow2.ml0000644000175000017500000000153014525371754014043 (* Open a qcow2 file using an external NBD server (qemu-nbd). *) open Printf let () = if Array.length Sys.argv <> 2 then failwith "usage: open_qcow2 file.qcow2"; let filename = Sys.argv.(1) in NBD.with_handle ( fun nbd -> (* Run qemu-nbd as a subprocess using * systemd socket activation. *) let args = [ "qemu-nbd"; "-f"; "qcow2"; filename ] in NBD.connect_systemd_socket_activation nbd args; (* Read the first sector of raw data. *) let buf = Bytes.create 512 and offset = 0_L in NBD.pread nbd buf offset; (* Hexdump it. *) let chan = Unix.open_process_out "hexdump -C" in output_bytes chan buf; ignore (Unix.close_process_out chan) (* The qemu-nbd server will exit when we close the * handle (implicitly closed by NBD.with_handle). *) ) libnbd-1.20.3/ocaml/examples/server_flags.ml0000644000175000017500000000306414525371754014455 (* This example is similar to nbdinfo . It connects to an * NBD URI and queries various flags and metadata of the default * export. * * To try it out do this from the top build directory: * * nbdkit -U - null 1G --filter=exportname exportdesc=fixed:foo \ * --run './run ocaml/examples/server_flags.opt "$uri"' *) open Printf let () = if Array.length Sys.argv <> 2 then failwith "usage: server_flags URI"; let uri = Sys.argv.(1) in NBD.with_handle ( fun nbd -> (* Request full export description during negotiation. *) NBD.set_full_info nbd true; (* Connect to the NBD URI. *) NBD.connect_uri nbd uri; (* Print export information. *) (try printf "canonical name = %S\n" (NBD.get_canonical_export_name nbd) with NBD.Error _ -> () ); (try printf "export description = %S\n" (NBD.get_export_description nbd) with NBD.Error _ -> () ); (* Print various flags. *) let print_flag name fn = try printf "%s = %b\n" name (fn nbd) with NBD.Error _ -> () in print_flag "can_cache" NBD.can_cache; print_flag "can_df" NBD.can_df; print_flag "can_fast_zero" NBD.can_fast_zero; print_flag "can_flush" NBD.can_flush; print_flag "can_fua" NBD.can_fua; print_flag "can_multi_conn" NBD.can_multi_conn; print_flag "can_trim" NBD.can_trim; print_flag "can_zero" NBD.can_zero; print_flag "is_read_only" NBD.is_read_only; print_flag "is_rotational" NBD.is_rotational; ) libnbd-1.20.3/ocaml/tests/0000755000175000017500000000000014675532654011046 5libnbd-1.20.3/ocaml/tests/Makefile.am0000644000175000017500000000647614577766553013047 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk CLEANFILES += *.annot *.cmi *.cmo *.cmx *.o *.a *.so *.bc *.opt ML_TESTS = \ test_010_import.ml \ test_100_handle.ml \ test_105_with_handle.ml \ test_110_defaults.ml \ test_120_set_non_defaults.ml \ test_130_private_data.ml \ test_140_explicit_close.ml \ test_200_connect_command.ml \ test_210_opt_abort.ml \ test_220_opt_list.ml \ test_230_opt_info.ml \ test_240_opt_list_meta.ml \ test_245_opt_list_meta_queries.ml \ test_250_opt_set_meta.ml \ test_255_opt_set_meta_queries.ml \ test_300_get_size.ml \ test_400_pread.ml \ test_405_pread_structured.ml \ test_410_pwrite.ml \ test_460_block_status.ml \ test_465_block_status_64.ml \ test_500_aio_pread.ml \ test_500_aio_pread_buffer_lifetime.ml \ test_500_aio_pread_old_buffer.ml \ test_505_aio_pread_structured_callback.ml \ test_505_aio_pread_structured_callback_old_buffer.ml \ test_510_aio_pwrite.ml \ test_510_aio_pwrite_old_buffer.ml \ test_580_aio_connect.ml \ test_590_aio_copy.ml \ test_600_debug_callback.ml \ test_610_exception.ml \ test_620_stats.ml \ $(NULL) EXTRA_DIST = \ $(ML_TESTS) \ ocaml_test_config.mli \ $(NULL) if HAVE_OCAML if HAVE_NBDKIT tests_bc = $(ML_TESTS:.ml=.bc) tests_opt = $(ML_TESTS:.ml=.opt) OCAMLFLAGS = $(OCAML_FLAGS) $(OCAML_WARN_ERROR) -ccopt '$(CFLAGS)' OCAMLPACKAGES = \ -package $(OCAMLFIND_PACKAGES) \ -I $(srcdir)/.. -I $(builddir)/.. -I $(srcdir) -I $(builddir) check_SCRIPTS = $(tests_bc) if HAVE_OCAMLOPT check_SCRIPTS += $(tests_opt) endif %.bc: %.cmo ../mlnbd.cma ocaml_test_config.cmo LD_LIBRARY_PATH=../../lib/.libs \ $(OCAMLFIND) ocamlc \ $(OCAMLFLAGS) $(OCAMLPACKAGES) -linkpkg \ mlnbd.cma ocaml_test_config.cmo $< -o $@ ocaml_test_config.cmo: ocaml_test_config.ml $(OCAMLFIND) ocamlc $(OCAMLFLAGS) -c $< -o $@ if HAVE_OCAMLOPT %.opt: %.cmx ../mlnbd.cmxa ocaml_test_config.cmx LD_LIBRARY_PATH=../../lib/.libs \ $(OCAMLFIND) ocamlopt \ $(OCAMLFLAGS) $(OCAMLPACKAGES) \ -cclib -L$(top_builddir)/lib/.libs -linkpkg \ mlnbd.cmxa ocaml_test_config.cmx $< -o $@ ocaml_test_config.cmx: ocaml_test_config.ml $(OCAMLFIND) ocamlopt $(OCAMLFLAGS) -c $< -o $@ endif TESTS_ENVIRONMENT = \ LIBNBD_DEBUG=1 \ $(MALLOC_CHECKS) \ OCAMLRUNPARAM=b \ $(NULL) LOG_COMPILER = $(top_builddir)/run TESTS = $(tests_bc) if HAVE_OCAMLOPT TESTS += $(tests_opt) endif endif HAVE_NBDKIT endif HAVE_OCAML check-valgrind: LIBNBD_VALGRIND=1 $(MAKE) check TESTS="$(tests_opt)" # Dependencies. #.depend: $(srcdir)/*.mli $(srcdir)/*.ml .depend: $(srcdir)/*.ml $(OCAMLFIND) ocamldep -I .. $(srcdir)/*.ml > $@ -include .depend libnbd-1.20.3/ocaml/tests/Makefile.in0000644000175000017500000016717014675532455013046 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) let nbdkit = "@NBDKIT@" (* Environment variable $srcdir is set by the test harness. *) let srcdir = try Sys.getenv "srcdir" with Not_found -> failwith "error: srcdir is not defined" (* Replacement for [Bytes.set_int64_be] (added in OCaml >= 4.08). *) let bytes_set_int64_be b i x = let x = ref x in for j = 0 to 7 do let c = Int64.shift_right_logical !x 56 in let c = Int64.to_int c in let c = Char.chr c in Bytes.set b (i+j) c; x := Int64.shift_left !x 8 done libnbd-1.20.3/ocaml/tests/test_010_import.ml0000644000175000017500000000160014525371754014242 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* nothing - just checks we can link with libnbd *) libnbd-1.20.3/ocaml/tests/test_100_handle.ml0000644000175000017500000000162714525371754014174 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) let () = let nbd = NBD.create () in ignore nbd let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_105_with_handle.ml0000644000175000017500000000235414525371754015232 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) exception Test let () = NBD.with_handle (fun nbd -> ()); (try ignore (NBD.with_handle (fun nbd -> raise Test)); assert false with Test -> () (* expected *) | exn -> failwith (Printexc.to_string exn) ); (* Were two handles created above? * XXX How to test if close was called twice? *) let h = NBD.get_handle_name (NBD.create ()) in assert (h = "nbd3") let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_110_defaults.ml0000644000175000017500000000315714525371754014551 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) let () = NBD.with_handle ( fun nbd -> let name = NBD.get_export_name nbd in assert (name = ""); let info = NBD.get_full_info nbd in assert (not info); let tls = NBD.get_tls nbd in assert (tls = NBD.TLS.DISABLE); let eh = NBD.get_request_extended_headers nbd in assert (eh = true); let sr = NBD.get_request_structured_replies nbd in assert sr; let meta = NBD.get_request_meta_context nbd in assert meta; let bs = NBD.get_request_block_size nbd in assert bs; let init = NBD.get_pread_initialize nbd in assert init; let flags = NBD.get_handshake_flags nbd in assert (flags = NBD.HANDSHAKE_FLAG.mask); let opt = NBD.get_opt_mode nbd in assert (not opt) ) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_120_set_non_defaults.ml0000644000175000017500000000477414525371754016305 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) let () = NBD.with_handle ( fun nbd -> NBD.set_export_name nbd "name"; let name = NBD.get_export_name nbd in assert (name = "name"); NBD.set_full_info nbd true; let info = NBD.get_full_info nbd in assert info; (try NBD.set_tls nbd (NBD.TLS.UNKNOWN 3); assert false with NBD.Error _ -> () ); let tls = NBD.get_tls nbd in assert (tls = NBD.TLS.DISABLE); if NBD.supports_tls nbd then ( NBD.set_tls nbd NBD.TLS.ALLOW; let tls = NBD.get_tls nbd in assert (tls = NBD.TLS.ALLOW); ); NBD.set_request_extended_headers nbd false; let eh = NBD.get_request_extended_headers nbd in assert (eh = false); NBD.set_request_structured_replies nbd false; let sr = NBD.get_request_structured_replies nbd in assert (not sr); NBD.set_request_meta_context nbd false; let meta = NBD.get_request_meta_context nbd in assert (not meta); NBD.set_request_block_size nbd false; let bs = NBD.get_request_block_size nbd in assert (not bs); NBD.set_pread_initialize nbd false; let init = NBD.get_pread_initialize nbd in assert (not init); (try NBD.set_handshake_flags nbd [ NBD.HANDSHAKE_FLAG.UNKNOWN 2 ]; assert false with NBD.Error _ -> () ); let flags = NBD.get_handshake_flags nbd in assert (flags = NBD.HANDSHAKE_FLAG.mask); NBD.set_handshake_flags nbd []; let flags = NBD.get_handshake_flags nbd in assert (flags = []); NBD.set_opt_mode nbd true; let opt = NBD.get_opt_mode nbd in assert opt ) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_130_private_data.ml0000644000175000017500000000201314525371754015375 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) let () = let nbd = NBD.create () in assert (NBD.get_private_data nbd == 0); assert (NBD.set_private_data nbd 42 == 0); assert (NBD.get_private_data nbd == 42) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_140_explicit_close.ml0000644000175000017500000000355114525371754015751 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Catch debug messages so we know when the handle was really closed. *) let messages = ref [] let f context msg = messages := msg :: !messages; 0 let () = (* Open the handle and then explicitly close it. *) let nbd = NBD.create () in NBD.set_debug nbd true; NBD.set_debug_callback nbd f; NBD.close nbd; (* Check the messages so we know the handle was closed. *) let closing_handle = (=) "closing handle" in assert (List.length (List.filter closing_handle !messages) = 1); (* Check that an exception is raised if we use any method on the handle. *) (try NBD.set_export_name nbd "test" with NBD.Closed _ -> (* expected *) () | exn -> failwith ("unexpected exception: " ^ Printexc.to_string exn) ); (try NBD.close nbd with NBD.Closed _ -> (* expected *) () | exn -> failwith ("unexpected exception: " ^ Printexc.to_string exn) ); Gc.full_major (); (* Check the messages so we know the handle was closed. *) assert (List.length (List.filter closing_handle !messages) = 1) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_200_connect_command.ml0000644000175000017500000000206214553500206016046 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config let () = NBD.with_handle ( fun nbd -> NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "null"] ) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_210_opt_abort.ml0000644000175000017500000000256114553500356014723 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config let () = let nbd = NBD.create () in NBD.set_opt_mode nbd true; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "null"]; let proto = NBD.get_protocol nbd in assert (proto = "newstyle-fixed"); let sr = NBD.get_structured_replies_negotiated nbd in assert sr; NBD.opt_abort nbd; let closed = NBD.aio_is_closed nbd in assert closed; try let _ = NBD.get_size nbd in assert false with NBD.Error (errstr, errno) -> () let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_220_opt_list.ml0000644000175000017500000000434314553501412014562 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf let script = sprintf "%s/../../tests/opt-list.sh" srcdir let exports = ref [] let f user_data name desc = assert (user_data = 42); assert (desc = ""); exports := !exports @ [name]; 0 let conn mode body expect = exports := []; let nbd = NBD.create () in NBD.set_opt_mode nbd true; let mode = sprintf "mode=%d" mode in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "sh"; script; mode]; body nbd; assert (!exports = expect); NBD.opt_abort nbd let () = (* Require new-enough nbdkit *) let cmd = "nbdkit sh --dump-plugin | grep -q has_list_exports=1" in if Sys.command cmd <> 0 then ( exit 77 ); (* First pass: server fails NBD_OPT_LIST *) conn 0 ( fun (nbd) -> try let _ = NBD.opt_list nbd (f 42) in assert false with NBD.Error (errstr, errno) -> () ) []; (* Second pass: server advertises 'a' and 'b' *) conn 1 ( fun (nbd) -> let count = NBD.opt_list nbd (f 42) in assert (count = 2); ) [ "a"; "b" ]; (* Third pass: server advertises empty list *) conn 2 ( fun (nbd) -> let count = NBD.opt_list nbd (f 42) in assert (count = 0); ) []; (* Final pass: server advertises 'a' *) conn 3 ( fun (nbd) -> let count = NBD.opt_list nbd (f 42) in assert (count = 1); ) [ "a" ] let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_230_opt_info.ml0000644000175000017500000001042114553501431014536 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf let script = sprintf "%s/../../tests/opt-info.sh" srcdir let fail_unary f nbd = try let _ = f nbd in assert false with NBD.Error (errstr, errno) -> () let fail_binary f nbd arg = try let _ = f nbd arg in assert false with NBD.Error (errstr, errno) -> () let () = let nbd = NBD.create () in NBD.set_opt_mode nbd true; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "sh"; script]; NBD.add_meta_context nbd NBD.context_base_allocation; (* No size, flags, or meta-contexts yet *) fail_unary NBD.get_size nbd; fail_unary NBD.is_read_only nbd; fail_binary NBD.can_meta_context nbd NBD.context_base_allocation; (* info with no prior name gets info on "" *) NBD.opt_info nbd; let size = NBD.get_size nbd in assert (size = 0L); let ro = NBD.is_read_only nbd in assert ro; let meta = NBD.can_meta_context nbd NBD.context_base_allocation in assert meta; (* changing export wipes out prior info *) NBD.set_export_name nbd "b"; fail_unary NBD.get_size nbd; fail_unary NBD.is_read_only nbd; fail_binary NBD.can_meta_context nbd NBD.context_base_allocation; (* info on something not present fails *) NBD.set_export_name nbd "a"; fail_unary NBD.opt_info nbd; (* info for a different export, with automatic meta_context disabled *) NBD.set_export_name nbd "b"; NBD.set_request_meta_context nbd false; NBD.opt_info nbd; (* idempotent name change is no-op *) NBD.set_export_name nbd "b"; let size = NBD.get_size nbd in assert (size = 1L); let ro = NBD.is_read_only nbd in assert (not ro); fail_binary NBD.can_meta_context nbd NBD.context_base_allocation; NBD.set_request_meta_context nbd true; (* go on something not present *) NBD.set_export_name nbd "a"; fail_unary NBD.opt_go nbd; fail_unary NBD.get_size nbd; fail_unary NBD.is_read_only nbd; fail_binary NBD.can_meta_context nbd NBD.context_base_allocation; (* go on a valid export *) NBD.set_export_name nbd "good"; NBD.opt_go nbd; let size = NBD.get_size nbd in assert (size = 4L); let ro = NBD.is_read_only nbd in assert ro; let meta = NBD.can_meta_context nbd NBD.context_base_allocation in assert meta; (* now info is no longer valid, but does not wipe data *) fail_binary NBD.set_export_name nbd "a"; let name = NBD.get_export_name nbd in assert (name = "good"); fail_unary NBD.opt_info nbd; let size = NBD.get_size nbd in assert (size = 4L); let meta = NBD.can_meta_context nbd NBD.context_base_allocation in assert meta; NBD.shutdown nbd; (* Another connection. This time, check that SET_META triggered by opt_info * persists through nbd_opt_go with set_request_meta_context disabled. *) let nbd = NBD.create () in NBD.set_opt_mode nbd true; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "sh"; script]; NBD.add_meta_context nbd "x-unexpected:bogus"; fail_binary NBD.can_meta_context nbd NBD.context_base_allocation; NBD.opt_info nbd; let meta = NBD.can_meta_context nbd NBD.context_base_allocation in assert (not meta); NBD.set_request_meta_context nbd false; (* Adding to the request list now won't matter *) NBD.add_meta_context nbd NBD.context_base_allocation; NBD.opt_go nbd; let meta = NBD.can_meta_context nbd NBD.context_base_allocation in assert (not meta); NBD.shutdown nbd let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_240_opt_list_meta.ml0000644000175000017500000001042514553500450015571 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf let count = ref 0 let seen = ref false let f user_data name = assert (user_data = 42); count := !count + 1; if name = NBD.context_base_allocation then seen := true; 0 let () = (* Get into negotiating state. *) let nbd = NBD.create () in NBD.set_opt_mode nbd true; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "memory"; "size=1M"]; (* First pass: empty query should give at least "base:allocation". *) count := 0; seen := false; let r = NBD.opt_list_meta_context nbd (f 42) in assert (r = !count); assert (r >= 1); assert !seen; let max = !count in (* Second pass: bogus query has no response. *) count := 0; seen := false; NBD.add_meta_context nbd "x-nosuch:"; let r = NBD.opt_list_meta_context nbd (f 42) in assert (r = 0); assert (r = !count); assert (not !seen); (* Third pass: specific query should have one match. *) count := 0; seen := false; NBD.add_meta_context nbd NBD.context_base_allocation; let c = NBD.get_nr_meta_contexts nbd in assert (c = 2); let n = NBD.get_meta_context nbd 1 in assert (n = NBD.context_base_allocation); let r = NBD.opt_list_meta_context nbd (f 42) in assert (r = 1); assert (r = !count); assert !seen; (* Fourth pass: opt_list_meta_context is stateless, so it should * not wipe status learned during opt_info *) count := 0; seen := false; (try let _ = NBD.can_meta_context nbd NBD.context_base_allocation in assert false with NBD.Error (errstr, errno) -> () ); (try let _ = NBD.get_size nbd in assert false with NBD.Error (errstr, errno) -> () ); NBD.opt_info nbd; let s = NBD.get_size nbd in assert (s = 1048576_L); let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert m; NBD.clear_meta_contexts nbd; NBD.add_meta_context nbd "x-nosuch:"; let r = NBD.opt_list_meta_context nbd (f 42) in assert (r = 0); assert (r = !count); assert (not !seen); let s = NBD.get_size nbd in assert (s = 1048576_L); let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert m; (* Final pass: "base:" query should get at least "base:allocation" *) count := 0; seen := false; NBD.add_meta_context nbd "base:"; let r = NBD.opt_list_meta_context nbd (f 42) in assert (r >= 1); assert (r <= max); assert (r = !count); assert !seen; NBD.opt_abort nbd; (* Repeat but this time without structured replies. Deal gracefully * with older servers that don't allow the attempt. *) let nbd = NBD.create () in NBD.set_opt_mode nbd true; NBD.set_request_structured_replies nbd false; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "memory"; "size=1M"]; let bytes = NBD.stats_bytes_sent nbd in (try count := 0; seen := false; let r = NBD.opt_list_meta_context nbd (f 42) in assert (r = !count); assert (r >= 1); assert !seen with NBD.Error (errstr, errno) -> assert (NBD.stats_bytes_sent nbd > bytes); printf "ignoring failure from old server %s\n" errstr ); (* Now enable structured replies, and a retry should pass. *) let sr = NBD.opt_structured_reply nbd in assert sr; count := 0; seen := false; let r = NBD.opt_list_meta_context nbd (f 42) in assert (r = !count); assert (r >= 1); assert !seen; NBD.opt_abort nbd let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_245_opt_list_meta_queries.ml0000644000175000017500000000411014553501152017325 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf let count = ref 0 let seen = ref false let f user_data name = assert (user_data = 42); count := !count + 1; if name = NBD.context_base_allocation then seen := true; 0 let () = (* Get into negotiating state. *) let nbd = NBD.create () in NBD.set_opt_mode nbd true; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "memory"; "size=1M"]; (* First pass: empty query should give at least "base:allocation". *) count := 0; seen := false; NBD.add_meta_context nbd "x-nosuch:"; let r = NBD.opt_list_meta_context_queries nbd [] (f 42) in assert (r = !count); assert (r >= 1); assert !seen; (* Second pass: bogus query has no response. *) count := 0; seen := false; NBD.clear_meta_contexts nbd; let r = NBD.opt_list_meta_context_queries nbd ["x-nosuch:"] (f 42) in assert (r = 0); assert (r = !count); assert (not !seen); (* Third pass: specific query should have one match. *) count := 0; seen := false; let r = NBD.opt_list_meta_context_queries nbd [ "x-nosuch:"; NBD.context_base_allocation ] (f 42) in assert (r = 1); assert (r = !count); assert !seen; NBD.opt_abort nbd let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_250_opt_set_meta.ml0000644000175000017500000001012214553500465015412 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config let count = ref 0 let seen = ref false let f user_data name = assert (user_data = 42); count := !count + 1; if name = NBD.context_base_allocation then seen := true; 0 let () = (* Get into negotiating state without structured replies. *) let nbd = NBD.create () in NBD.set_opt_mode nbd true; NBD.set_request_structured_replies nbd false; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "memory"; "size=1M"]; (* No contexts negotiated yet; can_meta should be error if any requested *) let sr = NBD.get_structured_replies_negotiated nbd in assert (not sr); let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert (not m); NBD.add_meta_context nbd NBD.context_base_allocation; (try let _ = NBD.can_meta_context nbd NBD.context_base_allocation in assert false with NBD.Error (errstr, errno) -> () ); (* SET cannot succeed until SR is negotiated. *) count := 0; seen := false; (try let _ = NBD.can_meta_context nbd NBD.context_base_allocation in assert false with NBD.Error (errstr, errno) -> () ); assert (!count = 0); assert (not !seen); let sr = NBD.opt_structured_reply nbd in assert sr; let sr = NBD.get_structured_replies_negotiated nbd in assert sr; (try let _ = NBD.can_meta_context nbd NBD.context_base_allocation in assert false with NBD.Error (errstr, errno) -> () ); (* nbdkit does not match wildcard for SET, even though it does for LIST *) count := 0; seen := false; NBD.clear_meta_contexts nbd; NBD.add_meta_context nbd "base:"; let r = NBD.opt_set_meta_context nbd (f 42) in assert (r = !count); assert (r = 0); assert (not !seen); let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert (not m); (* Negotiating with no contexts is not an error, but selects nothing *) count := 0; seen := false; NBD.clear_meta_contexts nbd; let r = NBD.opt_set_meta_context nbd (f 42) in assert (r = 0); assert (r = !count); assert (not !seen); let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert (not m); (* Request 2 with expectation of 1; with set_request_meta_context off *) count := 0; seen := false; NBD.add_meta_context nbd "x-nosuch:context"; NBD.add_meta_context nbd NBD.context_base_allocation; NBD.set_request_meta_context nbd false; let r = NBD.opt_set_meta_context nbd (f 42) in assert (r = 1); assert (r = !count); assert !seen; let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert m; (* Transition to transmission phase; our last set should remain active *) NBD.clear_meta_contexts nbd; NBD.add_meta_context nbd "x-nosuch:context"; NBD.opt_go nbd; let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert m; (* Now too late to set; but should not lose earlier state *) count := 0; seen := false; (try let _ = NBD.opt_set_meta_context nbd (f 42) in assert false with NBD.Error (errstr, errno) -> () ); assert (0 = !count); assert (not !seen); let s = NBD.get_size nbd in assert (s = 1048576_L); let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert m; NBD.shutdown nbd let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_255_opt_set_meta_queries.ml0000644000175000017500000000511214553500477017162 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config let count = ref 0 let seen = ref false let f user_data name = assert (user_data = 42); count := !count + 1; if name = NBD.context_base_allocation then seen := true; 0 let () = (* Get into negotiating state. *) let nbd = NBD.create () in NBD.set_opt_mode nbd true; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "memory"; "size=1M"]; (* nbdkit does not match wildcard for SET, even though it does for LIST *) count := 0; seen := false; let r = NBD.opt_set_meta_context_queries nbd ["base:"] (f 42) in assert (r = !count); assert (r = 0); assert (not !seen); let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert (not m); (* Negotiating with no contexts is not an error, but selects nothing. * An explicit empty list overrides a non-empty implicit list. *) count := 0; seen := false; NBD.add_meta_context nbd NBD.context_base_allocation; let r = NBD.opt_set_meta_context_queries nbd [] (f 42) in assert (r = 0); assert (r = !count); assert (not !seen); let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert (not m); (* Request 2 with expectation of 1. *) count := 0; seen := false; let r = NBD.opt_set_meta_context_queries nbd ["x-nosuch:context"; NBD.context_base_allocation] (f 42) in assert (r = 1); assert (r = !count); assert !seen; let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert m; (* Transition to transmission phase; our last set should remain active *) NBD.set_request_meta_context nbd false; NBD.opt_go nbd; let m = NBD.can_meta_context nbd NBD.context_base_allocation in assert m; NBD.shutdown nbd let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_300_get_size.ml0000644000175000017500000000224214553500511014530 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf let expected = 1048576_L let () = let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "null"; sprintf "size=%Ld" expected]; let actual = NBD.get_size nbd in assert (actual = expected) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_400_pread.ml0000644000175000017500000000272614560170636014033 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf let expected = let b = Bytes.create 512 in for i = 0 to 512/8-1 do let i64 = Int64.of_int (i*8) in bytes_set_int64_be b (i*8) i64 done; b let () = let buf = NBD.with_handle ( fun nbd -> NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "pattern"; "size=512"]; let buf = Bytes.create 512 in NBD.pread nbd buf 0_L; buf ) in printf "buf = %S\n" (Bytes.to_string buf); printf "expected = %S\n" (Bytes.to_string expected); assert (buf = expected) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_405_pread_structured.ml0000644000175000017500000000374214560170752016322 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf let expected = let b = Bytes.create 512 in for i = 0 to 512/8-1 do let i64 = Int64.of_int (i*8) in bytes_set_int64_be b (i*8) i64 done; b (* This can be any error, it's just used as a sentinel. *) let test_error = Unix.ENETDOWN let f user_data buf2 offset s err = assert (!err = 0); err := NBD.errno_of_unix_error test_error; if user_data <> 42 then invalid_arg "this should be turned into NBD.Error"; assert (buf2 = expected); assert (offset = 0_L); assert (s = Int32.to_int NBD.read_data); 0 let () = let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "pattern"; "size=512"]; let buf = Bytes.create 512 in NBD.pread_structured nbd buf 0_L (f 42); assert (buf = expected); let flags = let open NBD.CMD_FLAG in [DF] in NBD.pread_structured nbd buf 0_L (f 42) ~flags; assert (buf = expected); try NBD.pread_structured nbd buf 0_L (f 43) ~flags; assert false with | NBD.Error (_, Some errno) when errno = test_error -> () | NBD.Error (_, _) -> assert false let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_410_pwrite.ml0000644000175000017500000000323614553500554014246 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Unix let () = let buf1 = Bytes.make 512 '\000' in Bytes.set buf1 10 '\001'; Bytes.set buf1 510 '\x55'; Bytes.set buf1 511 '\xAA'; let datafile, chan = Filename.open_temp_file ~mode:[Open_binary] "410" ".data" in let fd = descr_of_out_channel chan in ftruncate fd 512; close_out chan; let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "file"; datafile]; let flags = let open NBD.CMD_FLAG in [FUA] in NBD.pwrite nbd buf1 0_L ~flags; let buf2 = Bytes.create 512 in NBD.pread nbd buf2 0_L; assert (buf1 = buf2); let fd = openfile datafile [O_RDONLY] 0 in let content = Bytes.create 512 in assert (512 = read fd content 0 512); close fd; assert (buf1 = content); unlink datafile let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_460_block_status.ml0000644000175000017500000000350514553501450015431 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf let script = sprintf "%s/../../tests/meta-base-allocation.sh" srcdir let entries = ref [||] let f user_data metacontext offset e err = assert (user_data = 42); assert (!err = 0); if metacontext = "base:allocation" then entries := e; 0 let () = let nbd = NBD.create () in NBD.add_meta_context nbd "base:allocation"; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "sh"; script]; NBD.block_status nbd 65536_L 0_L (f 42); assert (!entries = [| 8192_L; 0_L; 8192_L; 1_L; 16384_L; 3_L; 16384_L; 2_L; 16384_L; 0_L |]); NBD.block_status nbd 1024_L 32256_L (f 42); assert (!entries = [| 512_L; 3_L; 16384_L; 2_L |]); let flags = let open NBD.CMD_FLAG in [REQ_ONE] in NBD.block_status nbd 1024_L 32256_L (f 42) ~flags; assert (!entries = [| 512_L; 3_L |]) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_465_block_status_64.ml0000644000175000017500000000351614553501473015756 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf let script = sprintf "%s/../../tests/meta-base-allocation.sh" srcdir let entries = ref [||] let f user_data metacontext offset e err = assert (user_data = 42); assert (!err = 0); if metacontext = "base:allocation" then entries := e; 0 let () = let nbd = NBD.create () in NBD.add_meta_context nbd "base:allocation"; NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "sh"; script]; NBD.block_status_64 nbd 65536_L 0_L (f 42); assert (!entries = [| 8192_L, 0_L; 8192_L, 1_L; 16384_L, 3_L; 16384_L, 2_L; 16384_L, 0_L |]); NBD.block_status_64 nbd 1024_L 32256_L (f 42); assert (!entries = [| 512_L, 3_L; 16384_L, 2_L |]); let flags = let open NBD.CMD_FLAG in [REQ_ONE] in NBD.block_status_64 nbd 1024_L 32256_L (f 42) ~flags; assert (!entries = [| 512_L, 3_L |]) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_500_aio_pread.ml0000644000175000017500000000300414577571004014654 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config let expected = let b = Bytes.create 512 in for i = 0 to 512/8-1 do let i64 = Int64.of_int (i*8) in bytes_set_int64_be b (i*8) i64 done; Bytes.to_string b let () = let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "pattern"; "size=512"]; let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread nbd buf 0_L in while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; assert (NBD.Buffer.size buf = 512); assert (String.length expected = 512); for i = 0 to 511 do assert (buf.{i} = expected.[i]) done let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_500_aio_pread_buffer_lifetime.ml0000644000175000017500000000364014577767250020103 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Test lifetime of NBD.Buffer.t. *) open Ocaml_test_config let () = let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "pattern"; "size=32M"]; (* Choose a large read size so that it won't usually complete during * the call to aio_pread. *) let size = 16 * 1024 * 1024 in (* Allocate a temporary buffer but don't keep a reference to it. * The wrapper around aio_pread should register a root here * so that it won't be freed. *) let cookie = NBD.aio_pread nbd (NBD.Buffer.alloc size) 0_L in (* Hopefully the operation is still running, so the buffer is * still required. Let's run a full GC cycle now. If the * buffer is (incorrectly) freed here, we should crash or * valgrind will give an error. *) Gc.compact (); (* Complete the operation. The aio_pread completion callback * should unregister the root. *) while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; (* Run a GC cycle again. The buffer may now be freed. *) Gc.compact () libnbd-1.20.3/ocaml/tests/test_500_aio_pread_old_buffer.ml0000644000175000017500000000274114577571004017052 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Note: Uses the old NBD.Buffer.t from libnbd <= 1.18 *) open Ocaml_test_config let expected = let b = Bytes.create 512 in for i = 0 to 512/8-1 do let i64 = Int64.of_int (i*8) in bytes_set_int64_be b (i*8) i64 done; b let () = let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "pattern"; "size=512"]; let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread nbd buf 0_L in while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; let buf = NBD.Buffer.to_bytes buf in assert (buf = expected) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_505_aio_pread_structured_callback.ml0000644000175000017500000000702214577571004020765 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Printf (* These can be any two unique errors. They are just used as a sentinel. *) let test_error1 = Unix.ENETDOWN let test_error2 = Unix.ENETUNREACH let expected = let b = Bytes.create 512 in for i = 0 to 512/8-1 do let i64 = Int64.of_int (i*8) in bytes_set_int64_be b (i*8) i64 done; b let chunk user_data buf2 offset s err = assert (!err = 0); err := NBD.errno_of_unix_error test_error1; if user_data <> 42 then invalid_arg "this should be turned into NBD.Error"; assert (buf2 = expected); assert (offset = 0_L); assert (s = Int32.to_int NBD.read_data); 0 let callback user_data err = if fst user_data = 42 then assert (!err = 0) else assert (!err = NBD.errno_of_unix_error test_error1); err := NBD.errno_of_unix_error test_error2; if snd user_data <> 42 then invalid_arg "this should be turned into NBD.Error"; 0 let () = let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "pattern"; "size=512"]; (* First try: succeed in both callbacks *) let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread_structured nbd buf 0_L (chunk 42) ~completion:(callback (42, 42)) in while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; for i = 0 to 511 do assert (buf.{i} = Bytes.unsafe_get expected i) done; (* Second try: fail only during callback *) let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread_structured nbd buf 0_L (chunk 42) ~completion:(callback (42, 43)) in (try while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; assert false with | NBD.Error (_, Some errno) when errno = test_error2 -> () | NBD.Error (_, _) -> assert false ); (* Third try: fail during both *) let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread_structured nbd buf 0_L (chunk 44) ~completion:(callback (43, 43)) in (try while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; assert false with | NBD.Error (_, Some errno) when errno = test_error2 -> () | NBD.Error (_, _) -> assert false ); (* Fourth try: fail only during chunk *) let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread_structured nbd buf 0_L (chunk 43) ~completion:(callback (43, 42)) in (try while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; assert false with | NBD.Error (_, Some errno) when errno = test_error1 -> () | NBD.Error (_, _) -> assert false ) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_505_aio_pread_structured_callback_old_buffer.ml0000644000175000017500000000707714577571004023166 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Note: Uses the old NBD.Buffer.t from libnbd <= 1.18 *) open Ocaml_test_config open Printf (* These can be any two unique errors. They are just used as a sentinel. *) let test_error1 = Unix.ENETDOWN let test_error2 = Unix.ENETUNREACH let expected = let b = Bytes.create 512 in for i = 0 to 512/8-1 do let i64 = Int64.of_int (i*8) in bytes_set_int64_be b (i*8) i64 done; b let chunk user_data buf2 offset s err = assert (!err = 0); err := NBD.errno_of_unix_error test_error1; if user_data <> 42 then invalid_arg "this should be turned into NBD.Error"; assert (buf2 = expected); assert (offset = 0_L); assert (s = Int32.to_int NBD.read_data); 0 let callback user_data err = if fst user_data = 42 then assert (!err = 0) else assert (!err = NBD.errno_of_unix_error test_error1); err := NBD.errno_of_unix_error test_error2; if snd user_data <> 42 then invalid_arg "this should be turned into NBD.Error"; 0 let () = let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "pattern"; "size=512"]; (* First try: succeed in both callbacks *) let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread_structured nbd buf 0_L (chunk 42) ~completion:(callback (42, 42)) in while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; let buf = NBD.Buffer.to_bytes buf in assert (buf = expected); (* Second try: fail only during callback *) let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread_structured nbd buf 0_L (chunk 42) ~completion:(callback (42, 43)) in (try while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; assert false with | NBD.Error (_, Some errno) when errno = test_error2 -> () | NBD.Error (_, _) -> assert false ); (* Third try: fail during both *) let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread_structured nbd buf 0_L (chunk 44) ~completion:(callback (43, 43)) in (try while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; assert false with | NBD.Error (_, Some errno) when errno = test_error2 -> () | NBD.Error (_, _) -> assert false ); (* Fourth try: fail only during chunk *) let buf = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread_structured nbd buf 0_L (chunk 43) ~completion:(callback (43, 42)) in (try while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; assert false with | NBD.Error (_, Some errno) when errno = test_error1 -> () | NBD.Error (_, _) -> assert false ) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_510_aio_pwrite.ml0000644000175000017500000000404614577571004015103 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Unix let () = let buf = Bytes.make 512 '\000' in Bytes.set buf 10 '\001'; Bytes.set buf 510 '\x55'; Bytes.set buf 511 '\xAA'; let datafile, chan = Filename.open_temp_file ~mode:[Open_binary] "510" ".data" in let fd = descr_of_out_channel chan in ftruncate fd 512; close_out chan; let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "file"; datafile]; let buf1 = NBD.Buffer.of_bytes buf in let flags = let open NBD.CMD_FLAG in [FUA] in let cookie = NBD.aio_pwrite nbd buf1 0_L ~flags in while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; let buf2 = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread nbd buf2 0_L in while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; assert (NBD.Buffer.size buf2 = 512); assert (Bytes.length buf = 512); for i = 0 to 511 do assert (buf2.{i} = Bytes.unsafe_get buf i) done; let fd = openfile datafile [O_RDONLY] 0 in let content = Bytes.create 512 in assert (512 = read fd content 0 512); close fd; assert (buf = content); unlink datafile let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_510_aio_pwrite_old_buffer.ml0000644000175000017500000000376514577571004017301 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* Note: Uses the old NBD.Buffer.t from libnbd <= 1.18 *) open Ocaml_test_config open Unix let () = let buf = Bytes.make 512 '\000' in Bytes.set buf 10 '\001'; Bytes.set buf 510 '\x55'; Bytes.set buf 511 '\xAA'; let datafile, chan = Filename.open_temp_file ~mode:[Open_binary] "510" ".data" in let fd = descr_of_out_channel chan in ftruncate fd 512; close_out chan; let nbd = NBD.create () in NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "-v"; "file"; datafile]; let buf1 = NBD.Buffer.of_bytes buf in let flags = let open NBD.CMD_FLAG in [FUA] in let cookie = NBD.aio_pwrite nbd buf1 0_L ~flags in while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; let buf2 = NBD.Buffer.alloc 512 in let cookie = NBD.aio_pread nbd buf2 0_L in while not (NBD.aio_command_completed nbd cookie) do ignore (NBD.poll nbd (-1)) done; assert (buf = NBD.Buffer.to_bytes buf2); let fd = openfile datafile [O_RDONLY] 0 in let content = Bytes.create 512 in assert (512 = read fd content 0 512); close fd; assert (buf = content); unlink datafile let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_580_aio_connect.ml0000644000175000017500000000413214553500665015224 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) (* This test is unusual because we want to run it under nbdkit * rather than having the test run nbdkit as a subprocess. * * Therefore we detect if a $unixsocket parameter is passed * in Sys.argv. If not then we exec nbdkit: * nbdkit -U - ... --run '$argv0 \$unixsocket' * If the $unixsocket parameter is present then we run the test. *) open Ocaml_test_config open Unix open Printf let () = let argv0 = Sys.argv.(0) in match Array.length Sys.argv with | 1 -> (* exec nbdkit *) let runcmd = sprintf "%s $unixsocket" (Filename.quote argv0) in execvp nbdkit [| "nbdkit"; "-U"; "-"; "--exit-with-parent"; "-v"; "memory"; "size=512"; "--run"; runcmd |] | 2 -> (* run the test *) let unixsocket = Sys.argv.(1) in (* Connect to the subprocess using a Unix.sockaddr. *) NBD.with_handle ( fun nbd -> let sa = ADDR_UNIX unixsocket in NBD.aio_connect nbd sa; while NBD.aio_is_connecting nbd do ignore (NBD.poll nbd 1) done; assert (NBD.aio_is_ready nbd); assert (NBD.get_size nbd = 512_L) ) | _ -> failwith (sprintf "%s: unexpected test parameters" argv0) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_590_aio_copy.ml0000644000175000017500000001110314553500710014531 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config open Unix open Printf let (+^) = Int64.add let (-^) = Int64.sub let disk_size = 512 * 1024 * 1024 let bs = 65536_L let max_reads_in_flight = 16 let bytes_read = ref 0 let bytes_written = ref 0 let dir_is_read dir = dir land (Int32.to_int NBD.aio_direction_read) <> 0 let dir_is_write dir = dir land (Int32.to_int NBD.aio_direction_write) <> 0 (* Copy between two libnbd handles using aynchronous I/O (AIO). *) let asynch_copy src dst = let size = NBD.get_size dst in (* This is our reading position in the source. *) let soff = ref 0_L in (* This callback is called when any pread from the source has * completed. (buf, size) contains the block of data. This * builds up a queue of write commands which are sent on the * next iteration of the loop. *) let writes = ref [] in let read_completed buf offset err = assert (!err = 0); bytes_read := !bytes_read + NBD.Buffer.size buf; (* Get ready to issue a write command. *) writes := (buf, offset) :: !writes; (* By returning 1 here we auto-retire the pread command. *) 1 in (* This callback is called when any pwrite to the destination * has completed. *) let write_completed buf err = assert (!err = 0); bytes_written := !bytes_written + NBD.Buffer.size buf; (* By returning 1 here we auto-retire the pwrite command. *) 1 in (* The main loop which runs until we have finished reading and * there are no more commands in flight. *) while !soff < size || NBD.aio_in_flight src > 0 || NBD.aio_in_flight dst > 0 do (* If we're able to submit more reads from the source then do so now. *) if !soff < size && NBD.aio_in_flight src < max_reads_in_flight then ( let bs = min bs (size -^ !soff) in let buf = NBD.Buffer.alloc (Int64.to_int bs) in ignore (NBD.aio_pread src buf !soff ~completion:(read_completed buf !soff)); soff := !soff +^ bs ); (* If there are any write commands waiting to be issued to * the destination, send them now. *) List.iter ( fun (buf, offset) -> (* Note the size of the write is implicitly stored in buf. *) ignore (NBD.aio_pwrite dst buf offset ~completion:(write_completed buf)) ) !writes; writes := []; let sfd = NBD.aio_get_fd src and dfd = NBD.aio_get_fd dst and sdir = NBD.aio_get_direction src and ddir = NBD.aio_get_direction dst in let rfds = if dir_is_read sdir then [sfd] else [] in let rfds = if dir_is_read ddir then dfd :: rfds else rfds in let wfds = if dir_is_write sdir then [sfd] else [] in let wfds = if dir_is_write ddir then dfd :: wfds else wfds in let rfds, wfds, _ = select rfds wfds [] (-1.0) in (* These can change since we slept in the select, so we must * check them again. *) let sdir = NBD.aio_get_direction src and ddir = NBD.aio_get_direction dst in if List.mem sfd rfds && dir_is_read sdir then NBD.aio_notify_read src else if List.mem sfd wfds && dir_is_write sdir then NBD.aio_notify_write src else if List.mem dfd rfds && dir_is_read ddir then NBD.aio_notify_read dst else if List.mem dfd wfds && dir_is_write ddir then NBD.aio_notify_write dst done let () = let src = NBD.create () in NBD.set_handle_name src "src"; let dst = NBD.create () in NBD.set_handle_name dst "dst"; NBD.connect_command src [nbdkit; "-s"; "--exit-with-parent"; "-r"; "pattern"; sprintf "size=%d" disk_size]; NBD.connect_command dst [nbdkit; "-s"; "--exit-with-parent"; "memory"; sprintf "size=%d" disk_size]; asynch_copy src dst let () = assert (!bytes_read = disk_size); assert (!bytes_written = disk_size) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_600_debug_callback.ml0000644000175000017500000000233614553500725015637 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config let messages = ref [] let f id context msg = assert (id = 42); messages := !messages @ [msg]; 0 let () = let nbd = NBD.create () in NBD.set_debug_callback nbd (f 42); NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "null"]; NBD.shutdown nbd; print_endline "<<<"; List.iter print_endline !messages; print_endline ">>>" let () = Gc.compact () libnbd-1.20.3/ocaml/tests/test_610_exception.ml0000644000175000017500000000246514525371754014746 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Printf let () = let nbd = NBD.create () in try (* This will always throw an exception because the handle is not * connected. *) NBD.pread nbd (Bytes.create 512) 0_L with NBD.Error (errstr, errno) -> printf "string = %s\n" errstr; printf "errno = %s\n" (match errno with None -> "None" | Some err -> Unix.error_message err); Gc.compact (); exit 0 ;; (* If we reach here then we didn't catch the exception above. *) exit 1 libnbd-1.20.3/ocaml/tests/test_620_stats.ml0000644000175000017500000000533314553500742014074 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test case * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) open Ocaml_test_config let () = let nbd = NBD.create () in (* Pre-connection, stats start out at 0 *) let bs0 = NBD.stats_bytes_sent nbd in let cs0 = NBD.stats_chunks_sent nbd in let br0 = NBD.stats_bytes_received nbd in let cr0 = NBD.stats_chunks_received nbd in assert (bs0 = 0L); assert (cs0 = 0L); assert (br0 = 0L); assert (cr0 = 0L); (* Connection performs handshaking, which increments stats. * The number of bytes/chunks here may grow over time as more features get * automatically negotiated, so merely check that they are non-zero. *) NBD.connect_command nbd [nbdkit; "-s"; "--exit-with-parent"; "null"]; let bs1 = NBD.stats_bytes_sent nbd in let cs1 = NBD.stats_chunks_sent nbd in let br1 = NBD.stats_bytes_received nbd in let cr1 = NBD.stats_chunks_received nbd in assert (cs1 > 0L); assert (bs1 > cs1); assert (cr1 > 0L); assert (br1 > cr1); (* A flush command should be one chunk out, one chunk back (even if * structured replies are in use) *) NBD.flush nbd; let bs2 = NBD.stats_bytes_sent nbd in let cs2 = NBD.stats_chunks_sent nbd in let br2 = NBD.stats_bytes_received nbd in let cr2 = NBD.stats_chunks_received nbd in assert (bs2 = (Int64.add bs1 28L)); assert (cs2 = (Int64.succ cs1)); assert (br2 = (Int64.add br1 16L)); (* assumes nbdkit uses simple reply *) assert (cr2 = (Int64.succ cr1)); (* Stats are still readable after the connection closes; we don't know if * the server sent reply bytes to our NBD_CMD_DISC, so don't insist on it. *) NBD.shutdown nbd; let bs3 = NBD.stats_bytes_sent nbd in let cs3 = NBD.stats_chunks_sent nbd in let br3 = NBD.stats_bytes_received nbd in let cr3 = NBD.stats_chunks_received nbd in let fudge = if cr2 = cr3 then 0L else 1L in assert (bs3 > bs2); assert (cs3 = (Int64.succ cs2)); assert (br3 >= br2); assert (cr3 = (Int64.add cr2 fudge)) let () = Gc.compact () libnbd-1.20.3/ocaml/tests/ocaml_test_config.mli0000644000175000017500000000207614560170502015134 (* hey emacs, this is OCaml code: -*- tuareg -*- *) (* libnbd OCaml test configuration * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *) val nbdkit : string (** The expansion of [@NBDKIT@] from [./configure] *) val srcdir : string (** [$srcdir] from the environment *) val bytes_set_int64_be : bytes -> int -> int64 -> unit (** Replacement for [Bytes.set_int64_be] *) libnbd-1.20.3/golang/0000755000175000017500000000000014675532654010060 5libnbd-1.20.3/golang/configure/0000755000175000017500000000000014675532654012041 5libnbd-1.20.3/golang/configure/go.mod0000644000175000017500000000007614525371754013066 module libguestfs.org/configure // For unsafe.Slice. go 1.17 libnbd-1.20.3/golang/configure/test.go0000644000175000017500000000300714525371754013263 /* libnbd Go configuration test * Copyright Red Hat * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* This is called from ./configure to check that golang works * and is above the minimum required version. */ package main import ( "fmt" "runtime" "unsafe" ) func check_slice(arr *uint32, cnt int) []uint32 { /* Make sure unsafe.Slice() compiles, introduced in 1.17 */ return unsafe.Slice(arr, cnt) } func main() { fmt.Println(runtime.Version()) /* XXX Check for minimum runtime.Version() >= "go1.1.1" * Unfortunately go version numbers are not easy to parse. * They have the 3 formats "goX.Y.Z", "release.rN" or * "weekly.YYYY-MM-DD". The latter two formats are mostly * useless, and the first one is hard to parse. See also * cmpGoVersion in * http://web.archive.org/web/20130402235148/http://golang.org/src/cmd/go/get.go?m=text */ } libnbd-1.20.3/golang/Makefile.am0000644000175000017500000000505714525371754012037 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk source_files = \ aio_buffer.go \ bindings.go \ callbacks.go \ closures.go \ handle.go \ wrappers.go \ wrappers.h \ libnbd_010_load_test.go \ libnbd_020_aio_buffer_test.go \ libnbd_100_handle_test.go \ libnbd_110_defaults_test.go \ libnbd_120_set_non_defaults_test.go \ libnbd_200_connect_command_test.go \ libnbd_210_opt_abort_test.go \ libnbd_220_opt_list_test.go \ libnbd_230_opt_info_test.go \ libnbd_240_opt_list_meta_test.go \ libnbd_245_opt_list_meta_queries_test.go \ libnbd_250_opt_set_meta_test.go \ libnbd_255_opt_set_meta_queries_test.go \ libnbd_300_get_size_test.go \ libnbd_400_pread_test.go \ libnbd_405_pread_structured_test.go \ libnbd_410_pwrite_test.go \ libnbd_460_block_status_test.go \ libnbd_465_block_status_64_test.go \ libnbd_500_aio_pread_test.go \ libnbd_510_aio_pwrite_test.go \ libnbd_590_aio_copy_test.go \ libnbd_600_debug_callback_test.go \ libnbd_610_error_test.go \ libnbd_620_stats_test.go \ $(NULL) generator_built = \ bindings.go \ closures.go \ wrappers.go \ wrappers.h \ $(NULL) EXTRA_DIST = \ $(generator_built) \ .gitignore \ LICENSE \ README.md \ aio_buffer.go \ callbacks.go \ configure/go.mod \ configure/test.go \ go.mod \ handle.go \ libnbd-golang.pod \ libnbd_*_test.go \ make-dist.sh \ run-tests.sh \ $(NULL) if HAVE_POD man_MANS = libnbd-golang.3 CLEANFILES += $(man_MANS) libnbd-golang.3: libnbd-golang.pod $(top_builddir)/podwrapper.pl $(PODWRAPPER) --section=3 --man $@ \ --html $(top_builddir)/html/$@.html \ $< endif HAVE_POD if HAVE_GOLANG all-local: $(source_files) $(abs_top_builddir)/run $(GOLANG) build TESTS_ENVIRONMENT = \ LIBNBD_DEBUG=1 \ $(MALLOC_CHECKS) \ $(NULL) LOG_COMPILER = $(top_builddir)/run TESTS = run-tests.sh endif CLEANFILES += *~ libnbd-1.20.3/golang/Makefile.in0000644000175000017500000010642614675532455012055 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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Please see the manual to learn how to use this module: https://libguestfs.org/libnbd-golang.3.html This is part of libnbd, please check the project at: https://gitlab.com/nbdkit/libnbd ## License The software is Copyright Red Hat and licensed under the GNU Lesser General Public License version 2 or above (LGPLv2+). See the file `LICENSE` for details. libnbd-1.20.3/golang/bindings.go0000444000175000017500000027570514615661025012127 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd /* #cgo pkg-config: libnbd #cgo CFLAGS: -D_GNU_SOURCE=1 #include #include #include #include "libnbd.h" #include "wrappers.h" // There must be no blank line between end comment and import! // https://github.com/golang/go/issues/9733 */ import "C" import ( "runtime" "unsafe" ) /* Enums. */ type Tls int const ( TLS_DISABLE = Tls(0) TLS_ALLOW = Tls(1) TLS_REQUIRE = Tls(2) ) type Size int const ( SIZE_MINIMUM = Size(0) SIZE_PREFERRED = Size(1) SIZE_MAXIMUM = Size(2) SIZE_PAYLOAD = Size(3) ) /* Flags. */ type CmdFlag uint32 const ( CMD_FLAG_FUA = CmdFlag(0x01) CMD_FLAG_NO_HOLE = CmdFlag(0x02) CMD_FLAG_DF = CmdFlag(0x04) CMD_FLAG_REQ_ONE = CmdFlag(0x08) CMD_FLAG_FAST_ZERO = CmdFlag(0x10) CMD_FLAG_PAYLOAD_LEN = CmdFlag(0x20) CMD_FLAG_MASK = CmdFlag(0x3f) ) type HandshakeFlag uint32 const ( HANDSHAKE_FLAG_FIXED_NEWSTYLE = HandshakeFlag(0x01) HANDSHAKE_FLAG_NO_ZEROES = HandshakeFlag(0x02) HANDSHAKE_FLAG_MASK = HandshakeFlag(0x03) ) type Strict uint32 const ( STRICT_COMMANDS = Strict(0x01) STRICT_FLAGS = Strict(0x02) STRICT_BOUNDS = Strict(0x04) STRICT_ZERO_SIZE = Strict(0x08) STRICT_ALIGN = Strict(0x10) STRICT_PAYLOAD = Strict(0x20) STRICT_AUTO_FLAG = Strict(0x40) STRICT_MASK = Strict(0x7f) ) type AllowTransport uint32 const ( ALLOW_TRANSPORT_TCP = AllowTransport(0x01) ALLOW_TRANSPORT_UNIX = AllowTransport(0x02) ALLOW_TRANSPORT_VSOCK = AllowTransport(0x04) ALLOW_TRANSPORT_MASK = AllowTransport(0x07) ) type Shutdown uint32 const ( SHUTDOWN_ABANDON_PENDING = Shutdown(0x10000) SHUTDOWN_MASK = Shutdown(0x10000) ) /* Constants. */ const ( AIO_DIRECTION_READ uint32 = 1 AIO_DIRECTION_WRITE uint32 = 2 AIO_DIRECTION_BOTH uint32 = 3 READ_DATA uint32 = 1 READ_HOLE uint32 = 2 READ_ERROR uint32 = 3 /* Meta-context namespace "base" */ NAMESPACE_BASE = "base:" CONTEXT_BASE_ALLOCATION = "base:allocation" /* Defined bits in "base:allocation" */ STATE_HOLE uint32 = 1 STATE_ZERO uint32 = 2 /* Meta-context namespace "qemu" */ NAMESPACE_QEMU = "qemu:" CONTEXT_QEMU_DIRTY_BITMAP = "qemu:dirty-bitmap:" /* Defined bits in "qemu:dirty-bitmap:" */ STATE_DIRTY uint32 = 1 CONTEXT_QEMU_ALLOCATION_DEPTH = "qemu:allocation-depth" ) /* SetDebug: set or clear the debug flag */ func (h *Libnbd) SetDebug(debug bool) error { if h.h == nil { return closed_handle_error("set_debug") } var c_err C.struct_error c_debug := C.bool(debug) ret := C._nbd_set_debug_wrapper(&c_err, h.h, c_debug) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_debug", c_err) C.free_error(&c_err) return err } return nil } /* GetDebug: return the state of the debug flag */ func (h *Libnbd) GetDebug() (bool, error) { if h.h == nil { return false, closed_handle_error("get_debug") } var c_err C.struct_error ret := C._nbd_get_debug_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_debug", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SetDebugCallback: set the debug callback */ func (h *Libnbd) SetDebugCallback(debug DebugCallback) error { if h.h == nil { return closed_handle_error("set_debug_callback") } var c_err C.struct_error var c_debug C.nbd_debug_callback c_debug.callback = (*[0]byte)(C._nbd_debug_callback_wrapper) c_debug.free = (*[0]byte)(C._nbd_debug_callback_free) debug_cbid := registerCallbackId(debug) c_debug.user_data = C.alloc_cbid(C.long(debug_cbid)) ret := C._nbd_set_debug_callback_wrapper(&c_err, h.h, c_debug) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_debug_callback", c_err) C.free_error(&c_err) return err } return nil } /* ClearDebugCallback: clear the debug callback */ func (h *Libnbd) ClearDebugCallback() error { if h.h == nil { return closed_handle_error("clear_debug_callback") } var c_err C.struct_error ret := C._nbd_clear_debug_callback_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("clear_debug_callback", c_err) C.free_error(&c_err) return err } return nil } /* StatsBytesSent: statistics of bytes sent over connection so far */ func (h *Libnbd) StatsBytesSent() (uint64, error) { if h.h == nil { return 0, closed_handle_error("stats_bytes_sent") } var c_err C.struct_error ret := C._nbd_stats_bytes_sent_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) return uint64(ret), nil } /* StatsChunksSent: statistics of chunks sent over connection so far */ func (h *Libnbd) StatsChunksSent() (uint64, error) { if h.h == nil { return 0, closed_handle_error("stats_chunks_sent") } var c_err C.struct_error ret := C._nbd_stats_chunks_sent_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) return uint64(ret), nil } /* StatsBytesReceived: statistics of bytes received over connection so far */ func (h *Libnbd) StatsBytesReceived() (uint64, error) { if h.h == nil { return 0, closed_handle_error("stats_bytes_received") } var c_err C.struct_error ret := C._nbd_stats_bytes_received_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) return uint64(ret), nil } /* StatsChunksReceived: statistics of chunks received over connection so far */ func (h *Libnbd) StatsChunksReceived() (uint64, error) { if h.h == nil { return 0, closed_handle_error("stats_chunks_received") } var c_err C.struct_error ret := C._nbd_stats_chunks_received_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) return uint64(ret), nil } /* SetHandleName: set the handle name */ func (h *Libnbd) SetHandleName(handle_name string) error { if h.h == nil { return closed_handle_error("set_handle_name") } var c_err C.struct_error c_handle_name := C.CString(handle_name) defer C.free(unsafe.Pointer(c_handle_name)) ret := C._nbd_set_handle_name_wrapper(&c_err, h.h, c_handle_name) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_handle_name", c_err) C.free_error(&c_err) return err } return nil } /* GetHandleName: get the handle name */ func (h *Libnbd) GetHandleName() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_handle_name") } var c_err C.struct_error ret := C._nbd_get_handle_name_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_handle_name", c_err) C.free_error(&c_err) return nil, err } r := C.GoString(ret) C.free(unsafe.Pointer(ret)) return &r, nil } /* SetPrivateData: set the per-handle private data */ func (h *Libnbd) SetPrivateData(private_data uint) (uint, error) { if h.h == nil { return 0, closed_handle_error("set_private_data") } var c_err C.struct_error c_private_data := C.uintptr_t(private_data) ret := C._nbd_set_private_data_wrapper(&c_err, h.h, c_private_data) runtime.KeepAlive(h.h) return uint(ret), nil } /* GetPrivateData: get the per-handle private data */ func (h *Libnbd) GetPrivateData() (uint, error) { if h.h == nil { return 0, closed_handle_error("get_private_data") } var c_err C.struct_error ret := C._nbd_get_private_data_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) return uint(ret), nil } /* SetExportName: set the export name */ func (h *Libnbd) SetExportName(export_name string) error { if h.h == nil { return closed_handle_error("set_export_name") } var c_err C.struct_error c_export_name := C.CString(export_name) defer C.free(unsafe.Pointer(c_export_name)) ret := C._nbd_set_export_name_wrapper(&c_err, h.h, c_export_name) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_export_name", c_err) C.free_error(&c_err) return err } return nil } /* GetExportName: get the export name */ func (h *Libnbd) GetExportName() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_export_name") } var c_err C.struct_error ret := C._nbd_get_export_name_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_export_name", c_err) C.free_error(&c_err) return nil, err } r := C.GoString(ret) C.free(unsafe.Pointer(ret)) return &r, nil } /* SetRequestBlockSize: control whether NBD_OPT_GO requests block size */ func (h *Libnbd) SetRequestBlockSize(request bool) error { if h.h == nil { return closed_handle_error("set_request_block_size") } var c_err C.struct_error c_request := C.bool(request) ret := C._nbd_set_request_block_size_wrapper(&c_err, h.h, c_request) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_request_block_size", c_err) C.free_error(&c_err) return err } return nil } /* GetRequestBlockSize: see if NBD_OPT_GO requests block size */ func (h *Libnbd) GetRequestBlockSize() (bool, error) { if h.h == nil { return false, closed_handle_error("get_request_block_size") } var c_err C.struct_error ret := C._nbd_get_request_block_size_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_request_block_size", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SetFullInfo: control whether NBD_OPT_GO requests extra details */ func (h *Libnbd) SetFullInfo(request bool) error { if h.h == nil { return closed_handle_error("set_full_info") } var c_err C.struct_error c_request := C.bool(request) ret := C._nbd_set_full_info_wrapper(&c_err, h.h, c_request) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_full_info", c_err) C.free_error(&c_err) return err } return nil } /* GetFullInfo: see if NBD_OPT_GO requests extra details */ func (h *Libnbd) GetFullInfo() (bool, error) { if h.h == nil { return false, closed_handle_error("get_full_info") } var c_err C.struct_error ret := C._nbd_get_full_info_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_full_info", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* GetCanonicalExportName: return the canonical export name, if the server has one */ func (h *Libnbd) GetCanonicalExportName() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_canonical_export_name") } var c_err C.struct_error ret := C._nbd_get_canonical_export_name_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_canonical_export_name", c_err) C.free_error(&c_err) return nil, err } r := C.GoString(ret) C.free(unsafe.Pointer(ret)) return &r, nil } /* GetExportDescription: return the export description, if the server has one */ func (h *Libnbd) GetExportDescription() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_export_description") } var c_err C.struct_error ret := C._nbd_get_export_description_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_export_description", c_err) C.free_error(&c_err) return nil, err } r := C.GoString(ret) C.free(unsafe.Pointer(ret)) return &r, nil } /* SetTls: enable or require TLS (authentication and encryption) */ func (h *Libnbd) SetTls(tls Tls) error { if h.h == nil { return closed_handle_error("set_tls") } var c_err C.struct_error c_tls := C.int(tls) ret := C._nbd_set_tls_wrapper(&c_err, h.h, c_tls) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_tls", c_err) C.free_error(&c_err) return err } return nil } /* GetTls: get the TLS request setting */ func (h *Libnbd) GetTls() (Tls, error) { if h.h == nil { return 0, closed_handle_error("get_tls") } var c_err C.struct_error ret := C._nbd_get_tls_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) return Tls(ret), nil } /* GetTlsNegotiated: find out if TLS was negotiated on a connection */ func (h *Libnbd) GetTlsNegotiated() (bool, error) { if h.h == nil { return false, closed_handle_error("get_tls_negotiated") } var c_err C.struct_error ret := C._nbd_get_tls_negotiated_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_tls_negotiated", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SetTlsCertificates: set the path to the TLS certificates directory */ func (h *Libnbd) SetTlsCertificates(dir string) error { if h.h == nil { return closed_handle_error("set_tls_certificates") } var c_err C.struct_error c_dir := C.CString(dir) defer C.free(unsafe.Pointer(c_dir)) ret := C._nbd_set_tls_certificates_wrapper(&c_err, h.h, c_dir) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_tls_certificates", c_err) C.free_error(&c_err) return err } return nil } /* SetTlsVerifyPeer: set whether we verify the identity of the server */ func (h *Libnbd) SetTlsVerifyPeer(verify bool) error { if h.h == nil { return closed_handle_error("set_tls_verify_peer") } var c_err C.struct_error c_verify := C.bool(verify) ret := C._nbd_set_tls_verify_peer_wrapper(&c_err, h.h, c_verify) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_tls_verify_peer", c_err) C.free_error(&c_err) return err } return nil } /* GetTlsVerifyPeer: get whether we verify the identity of the server */ func (h *Libnbd) GetTlsVerifyPeer() (bool, error) { if h.h == nil { return false, closed_handle_error("get_tls_verify_peer") } var c_err C.struct_error ret := C._nbd_get_tls_verify_peer_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_tls_verify_peer", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SetTlsUsername: set the TLS username */ func (h *Libnbd) SetTlsUsername(username string) error { if h.h == nil { return closed_handle_error("set_tls_username") } var c_err C.struct_error c_username := C.CString(username) defer C.free(unsafe.Pointer(c_username)) ret := C._nbd_set_tls_username_wrapper(&c_err, h.h, c_username) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_tls_username", c_err) C.free_error(&c_err) return err } return nil } /* GetTlsUsername: get the current TLS username */ func (h *Libnbd) GetTlsUsername() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_tls_username") } var c_err C.struct_error ret := C._nbd_get_tls_username_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_tls_username", c_err) C.free_error(&c_err) return nil, err } r := C.GoString(ret) C.free(unsafe.Pointer(ret)) return &r, nil } /* SetTlsPskFile: set the TLS Pre-Shared Keys (PSK) filename */ func (h *Libnbd) SetTlsPskFile(filename string) error { if h.h == nil { return closed_handle_error("set_tls_psk_file") } var c_err C.struct_error c_filename := C.CString(filename) defer C.free(unsafe.Pointer(c_filename)) ret := C._nbd_set_tls_psk_file_wrapper(&c_err, h.h, c_filename) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_tls_psk_file", c_err) C.free_error(&c_err) return err } return nil } /* SetRequestExtendedHeaders: control use of extended headers */ func (h *Libnbd) SetRequestExtendedHeaders(request bool) error { if h.h == nil { return closed_handle_error("set_request_extended_headers") } var c_err C.struct_error c_request := C.bool(request) ret := C._nbd_set_request_extended_headers_wrapper(&c_err, h.h, c_request) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_request_extended_headers", c_err) C.free_error(&c_err) return err } return nil } /* GetRequestExtendedHeaders: see if extended headers are attempted */ func (h *Libnbd) GetRequestExtendedHeaders() (bool, error) { if h.h == nil { return false, closed_handle_error("get_request_extended_headers") } var c_err C.struct_error ret := C._nbd_get_request_extended_headers_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_request_extended_headers", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* GetExtendedHeadersNegotiated: see if extended headers are in use */ func (h *Libnbd) GetExtendedHeadersNegotiated() (bool, error) { if h.h == nil { return false, closed_handle_error("get_extended_headers_negotiated") } var c_err C.struct_error ret := C._nbd_get_extended_headers_negotiated_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_extended_headers_negotiated", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SetRequestStructuredReplies: control use of structured replies */ func (h *Libnbd) SetRequestStructuredReplies(request bool) error { if h.h == nil { return closed_handle_error("set_request_structured_replies") } var c_err C.struct_error c_request := C.bool(request) ret := C._nbd_set_request_structured_replies_wrapper(&c_err, h.h, c_request) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_request_structured_replies", c_err) C.free_error(&c_err) return err } return nil } /* GetRequestStructuredReplies: see if structured replies are attempted */ func (h *Libnbd) GetRequestStructuredReplies() (bool, error) { if h.h == nil { return false, closed_handle_error("get_request_structured_replies") } var c_err C.struct_error ret := C._nbd_get_request_structured_replies_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_request_structured_replies", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* GetStructuredRepliesNegotiated: see if structured replies are in use */ func (h *Libnbd) GetStructuredRepliesNegotiated() (bool, error) { if h.h == nil { return false, closed_handle_error("get_structured_replies_negotiated") } var c_err C.struct_error ret := C._nbd_get_structured_replies_negotiated_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_structured_replies_negotiated", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SetRequestMetaContext: control whether connect automatically requests meta contexts */ func (h *Libnbd) SetRequestMetaContext(request bool) error { if h.h == nil { return closed_handle_error("set_request_meta_context") } var c_err C.struct_error c_request := C.bool(request) ret := C._nbd_set_request_meta_context_wrapper(&c_err, h.h, c_request) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_request_meta_context", c_err) C.free_error(&c_err) return err } return nil } /* GetRequestMetaContext: see if connect automatically requests meta contexts */ func (h *Libnbd) GetRequestMetaContext() (bool, error) { if h.h == nil { return false, closed_handle_error("get_request_meta_context") } var c_err C.struct_error ret := C._nbd_get_request_meta_context_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_request_meta_context", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SetHandshakeFlags: control use of handshake flags */ func (h *Libnbd) SetHandshakeFlags(flags HandshakeFlag) error { if h.h == nil { return closed_handle_error("set_handshake_flags") } var c_err C.struct_error c_flags := C.uint32_t(flags) ret := C._nbd_set_handshake_flags_wrapper(&c_err, h.h, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_handshake_flags", c_err) C.free_error(&c_err) return err } return nil } /* GetHandshakeFlags: see which handshake flags are supported */ func (h *Libnbd) GetHandshakeFlags() (HandshakeFlag, error) { if h.h == nil { return 0, closed_handle_error("get_handshake_flags") } var c_err C.struct_error ret := C._nbd_get_handshake_flags_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) return HandshakeFlag(ret), nil } /* SetPreadInitialize: control whether libnbd pre-initializes read buffers */ func (h *Libnbd) SetPreadInitialize(request bool) error { if h.h == nil { return closed_handle_error("set_pread_initialize") } var c_err C.struct_error c_request := C.bool(request) ret := C._nbd_set_pread_initialize_wrapper(&c_err, h.h, c_request) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_pread_initialize", c_err) C.free_error(&c_err) return err } return nil } /* GetPreadInitialize: see whether libnbd pre-initializes read buffers */ func (h *Libnbd) GetPreadInitialize() (bool, error) { if h.h == nil { return false, closed_handle_error("get_pread_initialize") } var c_err C.struct_error ret := C._nbd_get_pread_initialize_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_pread_initialize", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SetStrictMode: control how strictly to follow NBD protocol */ func (h *Libnbd) SetStrictMode(flags Strict) error { if h.h == nil { return closed_handle_error("set_strict_mode") } var c_err C.struct_error c_flags := C.uint32_t(flags) ret := C._nbd_set_strict_mode_wrapper(&c_err, h.h, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_strict_mode", c_err) C.free_error(&c_err) return err } return nil } /* GetStrictMode: see which strictness flags are in effect */ func (h *Libnbd) GetStrictMode() (Strict, error) { if h.h == nil { return 0, closed_handle_error("get_strict_mode") } var c_err C.struct_error ret := C._nbd_get_strict_mode_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) return Strict(ret), nil } /* SetOptMode: control option mode, for pausing during option negotiation */ func (h *Libnbd) SetOptMode(enable bool) error { if h.h == nil { return closed_handle_error("set_opt_mode") } var c_err C.struct_error c_enable := C.bool(enable) ret := C._nbd_set_opt_mode_wrapper(&c_err, h.h, c_enable) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_opt_mode", c_err) C.free_error(&c_err) return err } return nil } /* GetOptMode: return whether option mode was enabled */ func (h *Libnbd) GetOptMode() (bool, error) { if h.h == nil { return false, closed_handle_error("get_opt_mode") } var c_err C.struct_error ret := C._nbd_get_opt_mode_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_opt_mode", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* OptGo: end negotiation and move on to using an export */ func (h *Libnbd) OptGo() error { if h.h == nil { return closed_handle_error("opt_go") } var c_err C.struct_error ret := C._nbd_opt_go_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_go", c_err) C.free_error(&c_err) return err } return nil } /* OptAbort: end negotiation and close the connection */ func (h *Libnbd) OptAbort() error { if h.h == nil { return closed_handle_error("opt_abort") } var c_err C.struct_error ret := C._nbd_opt_abort_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_abort", c_err) C.free_error(&c_err) return err } return nil } /* OptStarttls: request the server to initiate TLS */ func (h *Libnbd) OptStarttls() (bool, error) { if h.h == nil { return false, closed_handle_error("opt_starttls") } var c_err C.struct_error ret := C._nbd_opt_starttls_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_starttls", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* OptExtendedHeaders: request the server to enable extended headers */ func (h *Libnbd) OptExtendedHeaders() (bool, error) { if h.h == nil { return false, closed_handle_error("opt_extended_headers") } var c_err C.struct_error ret := C._nbd_opt_extended_headers_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_extended_headers", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* OptStructuredReply: request the server to enable structured replies */ func (h *Libnbd) OptStructuredReply() (bool, error) { if h.h == nil { return false, closed_handle_error("opt_structured_reply") } var c_err C.struct_error ret := C._nbd_opt_structured_reply_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_structured_reply", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* OptList: request the server to list all exports during negotiation */ func (h *Libnbd) OptList(list ListCallback) (uint, error) { if h.h == nil { return 0, closed_handle_error("opt_list") } var c_err C.struct_error var c_list C.nbd_list_callback c_list.callback = (*[0]byte)(C._nbd_list_callback_wrapper) c_list.free = (*[0]byte)(C._nbd_list_callback_free) list_cbid := registerCallbackId(list) c_list.user_data = C.alloc_cbid(C.long(list_cbid)) ret := C._nbd_opt_list_wrapper(&c_err, h.h, c_list) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_list", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* OptInfo: request the server for information about an export */ func (h *Libnbd) OptInfo() error { if h.h == nil { return closed_handle_error("opt_info") } var c_err C.struct_error ret := C._nbd_opt_info_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_info", c_err) C.free_error(&c_err) return err } return nil } /* OptListMetaContext: list available meta contexts, using implicit query list */ func (h *Libnbd) OptListMetaContext(context ContextCallback) (uint, error) { if h.h == nil { return 0, closed_handle_error("opt_list_meta_context") } var c_err C.struct_error var c_context C.nbd_context_callback c_context.callback = (*[0]byte)(C._nbd_context_callback_wrapper) c_context.free = (*[0]byte)(C._nbd_context_callback_free) context_cbid := registerCallbackId(context) c_context.user_data = C.alloc_cbid(C.long(context_cbid)) ret := C._nbd_opt_list_meta_context_wrapper(&c_err, h.h, c_context) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_list_meta_context", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* OptListMetaContextQueries: list available meta contexts, using explicit query list */ func (h *Libnbd) OptListMetaContextQueries(queries []string, context ContextCallback) (uint, error) { if h.h == nil { return 0, closed_handle_error("opt_list_meta_context_queries") } var c_err C.struct_error c_queries := arg_string_list(queries) defer free_string_list(c_queries) var c_context C.nbd_context_callback c_context.callback = (*[0]byte)(C._nbd_context_callback_wrapper) c_context.free = (*[0]byte)(C._nbd_context_callback_free) context_cbid := registerCallbackId(context) c_context.user_data = C.alloc_cbid(C.long(context_cbid)) ret := C._nbd_opt_list_meta_context_queries_wrapper(&c_err, h.h, &c_queries[0], c_context) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_list_meta_context_queries", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* OptSetMetaContext: select specific meta contexts, using implicit query list */ func (h *Libnbd) OptSetMetaContext(context ContextCallback) (uint, error) { if h.h == nil { return 0, closed_handle_error("opt_set_meta_context") } var c_err C.struct_error var c_context C.nbd_context_callback c_context.callback = (*[0]byte)(C._nbd_context_callback_wrapper) c_context.free = (*[0]byte)(C._nbd_context_callback_free) context_cbid := registerCallbackId(context) c_context.user_data = C.alloc_cbid(C.long(context_cbid)) ret := C._nbd_opt_set_meta_context_wrapper(&c_err, h.h, c_context) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_set_meta_context", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* OptSetMetaContextQueries: select specific meta contexts, using explicit query list */ func (h *Libnbd) OptSetMetaContextQueries(queries []string, context ContextCallback) (uint, error) { if h.h == nil { return 0, closed_handle_error("opt_set_meta_context_queries") } var c_err C.struct_error c_queries := arg_string_list(queries) defer free_string_list(c_queries) var c_context C.nbd_context_callback c_context.callback = (*[0]byte)(C._nbd_context_callback_wrapper) c_context.free = (*[0]byte)(C._nbd_context_callback_free) context_cbid := registerCallbackId(context) c_context.user_data = C.alloc_cbid(C.long(context_cbid)) ret := C._nbd_opt_set_meta_context_queries_wrapper(&c_err, h.h, &c_queries[0], c_context) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("opt_set_meta_context_queries", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* AddMetaContext: ask server to negotiate metadata context */ func (h *Libnbd) AddMetaContext(name string) error { if h.h == nil { return closed_handle_error("add_meta_context") } var c_err C.struct_error c_name := C.CString(name) defer C.free(unsafe.Pointer(c_name)) ret := C._nbd_add_meta_context_wrapper(&c_err, h.h, c_name) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("add_meta_context", c_err) C.free_error(&c_err) return err } return nil } /* GetNrMetaContexts: return the current number of requested meta contexts */ func (h *Libnbd) GetNrMetaContexts() (uint, error) { if h.h == nil { return 0, closed_handle_error("get_nr_meta_contexts") } var c_err C.struct_error ret := C._nbd_get_nr_meta_contexts_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_nr_meta_contexts", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* GetMetaContext: return the i'th meta context request */ func (h *Libnbd) GetMetaContext(i int) (*string, error) { if h.h == nil { return nil, closed_handle_error("get_meta_context") } var c_err C.struct_error c_i := C.size_t(i) ret := C._nbd_get_meta_context_wrapper(&c_err, h.h, c_i) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_meta_context", c_err) C.free_error(&c_err) return nil, err } r := C.GoString(ret) C.free(unsafe.Pointer(ret)) return &r, nil } /* ClearMetaContexts: reset the list of requested meta contexts */ func (h *Libnbd) ClearMetaContexts() error { if h.h == nil { return closed_handle_error("clear_meta_contexts") } var c_err C.struct_error ret := C._nbd_clear_meta_contexts_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("clear_meta_contexts", c_err) C.free_error(&c_err) return err } return nil } /* SetUriAllowTransports: set the allowed transports in NBD URIs */ func (h *Libnbd) SetUriAllowTransports(mask AllowTransport) error { if h.h == nil { return closed_handle_error("set_uri_allow_transports") } var c_err C.struct_error c_mask := C.uint32_t(mask) ret := C._nbd_set_uri_allow_transports_wrapper(&c_err, h.h, c_mask) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_uri_allow_transports", c_err) C.free_error(&c_err) return err } return nil } /* SetUriAllowTls: set the allowed TLS settings in NBD URIs */ func (h *Libnbd) SetUriAllowTls(tls Tls) error { if h.h == nil { return closed_handle_error("set_uri_allow_tls") } var c_err C.struct_error c_tls := C.int(tls) ret := C._nbd_set_uri_allow_tls_wrapper(&c_err, h.h, c_tls) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_uri_allow_tls", c_err) C.free_error(&c_err) return err } return nil } /* SetUriAllowLocalFile: set the allowed transports in NBD URIs */ func (h *Libnbd) SetUriAllowLocalFile(allow bool) error { if h.h == nil { return closed_handle_error("set_uri_allow_local_file") } var c_err C.struct_error c_allow := C.bool(allow) ret := C._nbd_set_uri_allow_local_file_wrapper(&c_err, h.h, c_allow) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_uri_allow_local_file", c_err) C.free_error(&c_err) return err } return nil } /* ConnectUri: connect to NBD URI */ func (h *Libnbd) ConnectUri(uri string) error { if h.h == nil { return closed_handle_error("connect_uri") } var c_err C.struct_error c_uri := C.CString(uri) defer C.free(unsafe.Pointer(c_uri)) ret := C._nbd_connect_uri_wrapper(&c_err, h.h, c_uri) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("connect_uri", c_err) C.free_error(&c_err) return err } return nil } /* ConnectUnix: connect to NBD server over a Unix domain socket */ func (h *Libnbd) ConnectUnix(unixsocket string) error { if h.h == nil { return closed_handle_error("connect_unix") } var c_err C.struct_error c_unixsocket := C.CString(unixsocket) defer C.free(unsafe.Pointer(c_unixsocket)) ret := C._nbd_connect_unix_wrapper(&c_err, h.h, c_unixsocket) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("connect_unix", c_err) C.free_error(&c_err) return err } return nil } /* ConnectVsock: connect to NBD server over AF_VSOCK protocol */ func (h *Libnbd) ConnectVsock(cid uint32, port uint32) error { if h.h == nil { return closed_handle_error("connect_vsock") } var c_err C.struct_error c_cid := C.uint32_t(cid) c_port := C.uint32_t(port) ret := C._nbd_connect_vsock_wrapper(&c_err, h.h, c_cid, c_port) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("connect_vsock", c_err) C.free_error(&c_err) return err } return nil } /* ConnectTcp: connect to NBD server over a TCP port */ func (h *Libnbd) ConnectTcp(hostname string, port string) error { if h.h == nil { return closed_handle_error("connect_tcp") } var c_err C.struct_error c_hostname := C.CString(hostname) defer C.free(unsafe.Pointer(c_hostname)) c_port := C.CString(port) defer C.free(unsafe.Pointer(c_port)) ret := C._nbd_connect_tcp_wrapper(&c_err, h.h, c_hostname, c_port) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("connect_tcp", c_err) C.free_error(&c_err) return err } return nil } /* ConnectSocket: connect directly to a connected socket */ func (h *Libnbd) ConnectSocket(sock int) error { if h.h == nil { return closed_handle_error("connect_socket") } var c_err C.struct_error c_sock := C.int(sock) ret := C._nbd_connect_socket_wrapper(&c_err, h.h, c_sock) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("connect_socket", c_err) C.free_error(&c_err) return err } return nil } /* ConnectCommand: connect to NBD server command */ func (h *Libnbd) ConnectCommand(argv []string) error { if h.h == nil { return closed_handle_error("connect_command") } var c_err C.struct_error c_argv := arg_string_list(argv) defer free_string_list(c_argv) ret := C._nbd_connect_command_wrapper(&c_err, h.h, &c_argv[0]) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("connect_command", c_err) C.free_error(&c_err) return err } return nil } /* ConnectSystemdSocketActivation: connect using systemd socket activation */ func (h *Libnbd) ConnectSystemdSocketActivation(argv []string) error { if h.h == nil { return closed_handle_error("connect_systemd_socket_activation") } var c_err C.struct_error c_argv := arg_string_list(argv) defer free_string_list(c_argv) ret := C._nbd_connect_systemd_socket_activation_wrapper(&c_err, h.h, &c_argv[0]) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("connect_systemd_socket_activation", c_err) C.free_error(&c_err) return err } return nil } /* SetSocketActivationName: set the socket activation name */ func (h *Libnbd) SetSocketActivationName(socket_name string) error { if h.h == nil { return closed_handle_error("set_socket_activation_name") } var c_err C.struct_error c_socket_name := C.CString(socket_name) defer C.free(unsafe.Pointer(c_socket_name)) ret := C._nbd_set_socket_activation_name_wrapper(&c_err, h.h, c_socket_name) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("set_socket_activation_name", c_err) C.free_error(&c_err) return err } return nil } /* GetSocketActivationName: get the socket activation name */ func (h *Libnbd) GetSocketActivationName() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_socket_activation_name") } var c_err C.struct_error ret := C._nbd_get_socket_activation_name_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_socket_activation_name", c_err) C.free_error(&c_err) return nil, err } r := C.GoString(ret) C.free(unsafe.Pointer(ret)) return &r, nil } /* IsReadOnly: is the NBD export read-only? */ func (h *Libnbd) IsReadOnly() (bool, error) { if h.h == nil { return false, closed_handle_error("is_read_only") } var c_err C.struct_error ret := C._nbd_is_read_only_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("is_read_only", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanFlush: does the server support the flush command? */ func (h *Libnbd) CanFlush() (bool, error) { if h.h == nil { return false, closed_handle_error("can_flush") } var c_err C.struct_error ret := C._nbd_can_flush_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_flush", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanFua: does the server support the FUA flag? */ func (h *Libnbd) CanFua() (bool, error) { if h.h == nil { return false, closed_handle_error("can_fua") } var c_err C.struct_error ret := C._nbd_can_fua_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_fua", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* IsRotational: is the NBD disk rotational (like a disk)? */ func (h *Libnbd) IsRotational() (bool, error) { if h.h == nil { return false, closed_handle_error("is_rotational") } var c_err C.struct_error ret := C._nbd_is_rotational_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("is_rotational", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanTrim: does the server support the trim command? */ func (h *Libnbd) CanTrim() (bool, error) { if h.h == nil { return false, closed_handle_error("can_trim") } var c_err C.struct_error ret := C._nbd_can_trim_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_trim", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanZero: does the server support the zero command? */ func (h *Libnbd) CanZero() (bool, error) { if h.h == nil { return false, closed_handle_error("can_zero") } var c_err C.struct_error ret := C._nbd_can_zero_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_zero", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanFastZero: does the server support the fast zero flag? */ func (h *Libnbd) CanFastZero() (bool, error) { if h.h == nil { return false, closed_handle_error("can_fast_zero") } var c_err C.struct_error ret := C._nbd_can_fast_zero_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_fast_zero", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanBlockStatusPayload: does the server support the block status payload flag? */ func (h *Libnbd) CanBlockStatusPayload() (bool, error) { if h.h == nil { return false, closed_handle_error("can_block_status_payload") } var c_err C.struct_error ret := C._nbd_can_block_status_payload_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_block_status_payload", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanDf: does the server support the don't fragment flag to pread? */ func (h *Libnbd) CanDf() (bool, error) { if h.h == nil { return false, closed_handle_error("can_df") } var c_err C.struct_error ret := C._nbd_can_df_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_df", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanMultiConn: does the server support multi-conn? */ func (h *Libnbd) CanMultiConn() (bool, error) { if h.h == nil { return false, closed_handle_error("can_multi_conn") } var c_err C.struct_error ret := C._nbd_can_multi_conn_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_multi_conn", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanCache: does the server support the cache command? */ func (h *Libnbd) CanCache() (bool, error) { if h.h == nil { return false, closed_handle_error("can_cache") } var c_err C.struct_error ret := C._nbd_can_cache_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_cache", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* CanMetaContext: does the server support a specific meta context? */ func (h *Libnbd) CanMetaContext(metacontext string) (bool, error) { if h.h == nil { return false, closed_handle_error("can_meta_context") } var c_err C.struct_error c_metacontext := C.CString(metacontext) defer C.free(unsafe.Pointer(c_metacontext)) ret := C._nbd_can_meta_context_wrapper(&c_err, h.h, c_metacontext) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("can_meta_context", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* GetProtocol: return the NBD protocol variant */ func (h *Libnbd) GetProtocol() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_protocol") } var c_err C.struct_error ret := C._nbd_get_protocol_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_protocol", c_err) C.free_error(&c_err) return nil, err } /* ret is statically allocated, do not free it. */ r := C.GoString(ret) return &r, nil } /* GetSize: return the export size */ func (h *Libnbd) GetSize() (uint64, error) { if h.h == nil { return 0, closed_handle_error("get_size") } var c_err C.struct_error ret := C._nbd_get_size_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_size", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* GetBlockSize: return a specific server block size constraint */ func (h *Libnbd) GetBlockSize(size_type Size) (uint64, error) { if h.h == nil { return 0, closed_handle_error("get_block_size") } var c_err C.struct_error c_size_type := C.int(size_type) ret := C._nbd_get_block_size_wrapper(&c_err, h.h, c_size_type) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("get_block_size", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for Pread. */ type PreadOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* Pread: read from the NBD server */ func (h *Libnbd) Pread(buf []byte, offset uint64, optargs *PreadOptargs) error { if h.h == nil { return closed_handle_error("pread") } var c_err C.struct_error c_buf := unsafe.Pointer(&buf[0]) c_count := C.size_t(len(buf)) c_offset := C.uint64_t(offset) var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_pread_wrapper(&c_err, h.h, c_buf, c_count, c_offset, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("pread", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for PreadStructured. */ type PreadStructuredOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* PreadStructured: read from the NBD server */ func (h *Libnbd) PreadStructured(buf []byte, offset uint64, chunk ChunkCallback, optargs *PreadStructuredOptargs) error { if h.h == nil { return closed_handle_error("pread_structured") } var c_err C.struct_error c_buf := unsafe.Pointer(&buf[0]) c_count := C.size_t(len(buf)) c_offset := C.uint64_t(offset) var c_chunk C.nbd_chunk_callback c_chunk.callback = (*[0]byte)(C._nbd_chunk_callback_wrapper) c_chunk.free = (*[0]byte)(C._nbd_chunk_callback_free) chunk_cbid := registerCallbackId(chunk) c_chunk.user_data = C.alloc_cbid(C.long(chunk_cbid)) var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_pread_structured_wrapper(&c_err, h.h, c_buf, c_count, c_offset, c_chunk, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("pread_structured", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for Pwrite. */ type PwriteOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* Pwrite: write to the NBD server */ func (h *Libnbd) Pwrite(buf []byte, offset uint64, optargs *PwriteOptargs) error { if h.h == nil { return closed_handle_error("pwrite") } var c_err C.struct_error c_buf := unsafe.Pointer(&buf[0]) c_count := C.size_t(len(buf)) c_offset := C.uint64_t(offset) var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_pwrite_wrapper(&c_err, h.h, c_buf, c_count, c_offset, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("pwrite", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for Shutdown. */ type ShutdownOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags Shutdown } /* Shutdown: disconnect from the NBD server */ func (h *Libnbd) Shutdown(optargs *ShutdownOptargs) error { if h.h == nil { return closed_handle_error("shutdown") } var c_err C.struct_error var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_shutdown_wrapper(&c_err, h.h, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("shutdown", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for Flush. */ type FlushOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* Flush: send flush command to the NBD server */ func (h *Libnbd) Flush(optargs *FlushOptargs) error { if h.h == nil { return closed_handle_error("flush") } var c_err C.struct_error var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_flush_wrapper(&c_err, h.h, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("flush", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for Trim. */ type TrimOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* Trim: send trim command to the NBD server */ func (h *Libnbd) Trim(count uint64, offset uint64, optargs *TrimOptargs) error { if h.h == nil { return closed_handle_error("trim") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_trim_wrapper(&c_err, h.h, c_count, c_offset, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("trim", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for Cache. */ type CacheOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* Cache: send cache (prefetch) command to the NBD server */ func (h *Libnbd) Cache(count uint64, offset uint64, optargs *CacheOptargs) error { if h.h == nil { return closed_handle_error("cache") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_cache_wrapper(&c_err, h.h, c_count, c_offset, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("cache", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for Zero. */ type ZeroOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* Zero: send write zeroes command to the NBD server */ func (h *Libnbd) Zero(count uint64, offset uint64, optargs *ZeroOptargs) error { if h.h == nil { return closed_handle_error("zero") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_zero_wrapper(&c_err, h.h, c_count, c_offset, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("zero", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for BlockStatus. */ type BlockStatusOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* BlockStatus: send block status command, with 32-bit callback */ func (h *Libnbd) BlockStatus(count uint64, offset uint64, extent ExtentCallback, optargs *BlockStatusOptargs) error { if h.h == nil { return closed_handle_error("block_status") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_extent C.nbd_extent_callback c_extent.callback = (*[0]byte)(C._nbd_extent_callback_wrapper) c_extent.free = (*[0]byte)(C._nbd_extent_callback_free) extent_cbid := registerCallbackId(extent) c_extent.user_data = C.alloc_cbid(C.long(extent_cbid)) var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_block_status_wrapper(&c_err, h.h, c_count, c_offset, c_extent, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("block_status", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for BlockStatus64. */ type BlockStatus64Optargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* BlockStatus64: send block status command, with 64-bit callback */ func (h *Libnbd) BlockStatus64(count uint64, offset uint64, extent64 Extent64Callback, optargs *BlockStatus64Optargs) error { if h.h == nil { return closed_handle_error("block_status_64") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_extent64 C.nbd_extent64_callback c_extent64.callback = (*[0]byte)(C._nbd_extent64_callback_wrapper) c_extent64.free = (*[0]byte)(C._nbd_extent64_callback_free) extent64_cbid := registerCallbackId(extent64) c_extent64.user_data = C.alloc_cbid(C.long(extent64_cbid)) var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_block_status_64_wrapper(&c_err, h.h, c_count, c_offset, c_extent64, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("block_status_64", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for BlockStatusFilter. */ type BlockStatusFilterOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* BlockStatusFilter: send filtered block status command, with 64-bit callback */ func (h *Libnbd) BlockStatusFilter(count uint64, offset uint64, contexts []string, extent64 Extent64Callback, optargs *BlockStatusFilterOptargs) error { if h.h == nil { return closed_handle_error("block_status_filter") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) c_contexts := arg_string_list(contexts) defer free_string_list(c_contexts) var c_extent64 C.nbd_extent64_callback c_extent64.callback = (*[0]byte)(C._nbd_extent64_callback_wrapper) c_extent64.free = (*[0]byte)(C._nbd_extent64_callback_free) extent64_cbid := registerCallbackId(extent64) c_extent64.user_data = C.alloc_cbid(C.long(extent64_cbid)) var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_block_status_filter_wrapper(&c_err, h.h, c_count, c_offset, &c_contexts[0], c_extent64, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("block_status_filter", c_err) C.free_error(&c_err) return err } return nil } /* Poll: poll the handle once */ func (h *Libnbd) Poll(timeout int) (uint, error) { if h.h == nil { return 0, closed_handle_error("poll") } var c_err C.struct_error c_timeout := C.int(timeout) ret := C._nbd_poll_wrapper(&c_err, h.h, c_timeout) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("poll", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* Poll2: poll the handle once, with fd */ func (h *Libnbd) Poll2(fd int, timeout int) (uint, error) { if h.h == nil { return 0, closed_handle_error("poll2") } var c_err C.struct_error c_fd := C.int(fd) c_timeout := C.int(timeout) ret := C._nbd_poll2_wrapper(&c_err, h.h, c_fd, c_timeout) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("poll2", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* AioConnect: connect to the NBD server */ func (h *Libnbd) AioConnect(addr string) error { if h.h == nil { return closed_handle_error("aio_connect") } var c_err C.struct_error panic("SockAddrAndLen not supported") var c_addr *C.struct_sockaddr var c_addrlen C.uint ret := C._nbd_aio_connect_wrapper(&c_err, h.h, c_addr, c_addrlen) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_connect", c_err) C.free_error(&c_err) return err } return nil } /* AioConnectUri: connect to an NBD URI */ func (h *Libnbd) AioConnectUri(uri string) error { if h.h == nil { return closed_handle_error("aio_connect_uri") } var c_err C.struct_error c_uri := C.CString(uri) defer C.free(unsafe.Pointer(c_uri)) ret := C._nbd_aio_connect_uri_wrapper(&c_err, h.h, c_uri) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_connect_uri", c_err) C.free_error(&c_err) return err } return nil } /* AioConnectUnix: connect to the NBD server over a Unix domain socket */ func (h *Libnbd) AioConnectUnix(unixsocket string) error { if h.h == nil { return closed_handle_error("aio_connect_unix") } var c_err C.struct_error c_unixsocket := C.CString(unixsocket) defer C.free(unsafe.Pointer(c_unixsocket)) ret := C._nbd_aio_connect_unix_wrapper(&c_err, h.h, c_unixsocket) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_connect_unix", c_err) C.free_error(&c_err) return err } return nil } /* AioConnectVsock: connect to the NBD server over AF_VSOCK socket */ func (h *Libnbd) AioConnectVsock(cid uint32, port uint32) error { if h.h == nil { return closed_handle_error("aio_connect_vsock") } var c_err C.struct_error c_cid := C.uint32_t(cid) c_port := C.uint32_t(port) ret := C._nbd_aio_connect_vsock_wrapper(&c_err, h.h, c_cid, c_port) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_connect_vsock", c_err) C.free_error(&c_err) return err } return nil } /* AioConnectTcp: connect to the NBD server over a TCP port */ func (h *Libnbd) AioConnectTcp(hostname string, port string) error { if h.h == nil { return closed_handle_error("aio_connect_tcp") } var c_err C.struct_error c_hostname := C.CString(hostname) defer C.free(unsafe.Pointer(c_hostname)) c_port := C.CString(port) defer C.free(unsafe.Pointer(c_port)) ret := C._nbd_aio_connect_tcp_wrapper(&c_err, h.h, c_hostname, c_port) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_connect_tcp", c_err) C.free_error(&c_err) return err } return nil } /* AioConnectSocket: connect directly to a connected socket */ func (h *Libnbd) AioConnectSocket(sock int) error { if h.h == nil { return closed_handle_error("aio_connect_socket") } var c_err C.struct_error c_sock := C.int(sock) ret := C._nbd_aio_connect_socket_wrapper(&c_err, h.h, c_sock) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_connect_socket", c_err) C.free_error(&c_err) return err } return nil } /* AioConnectCommand: connect to the NBD server */ func (h *Libnbd) AioConnectCommand(argv []string) error { if h.h == nil { return closed_handle_error("aio_connect_command") } var c_err C.struct_error c_argv := arg_string_list(argv) defer free_string_list(c_argv) ret := C._nbd_aio_connect_command_wrapper(&c_err, h.h, &c_argv[0]) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_connect_command", c_err) C.free_error(&c_err) return err } return nil } /* AioConnectSystemdSocketActivation: connect using systemd socket activation */ func (h *Libnbd) AioConnectSystemdSocketActivation(argv []string) error { if h.h == nil { return closed_handle_error("aio_connect_systemd_socket_activation") } var c_err C.struct_error c_argv := arg_string_list(argv) defer free_string_list(c_argv) ret := C._nbd_aio_connect_systemd_socket_activation_wrapper(&c_err, h.h, &c_argv[0]) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_connect_systemd_socket_activation", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for AioOptGo. */ type AioOptGoOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptGo: end negotiation and move on to using an export */ func (h *Libnbd) AioOptGo(optargs *AioOptGoOptargs) error { if h.h == nil { return closed_handle_error("aio_opt_go") } var c_err C.struct_error var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_go_wrapper(&c_err, h.h, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_go", c_err) C.free_error(&c_err) return err } return nil } /* AioOptAbort: end negotiation and close the connection */ func (h *Libnbd) AioOptAbort() error { if h.h == nil { return closed_handle_error("aio_opt_abort") } var c_err C.struct_error ret := C._nbd_aio_opt_abort_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_abort", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for AioOptStarttls. */ type AioOptStarttlsOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptStarttls: request the server to initiate TLS */ func (h *Libnbd) AioOptStarttls(optargs *AioOptStarttlsOptargs) error { if h.h == nil { return closed_handle_error("aio_opt_starttls") } var c_err C.struct_error var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_starttls_wrapper(&c_err, h.h, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_starttls", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for AioOptExtendedHeaders. */ type AioOptExtendedHeadersOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptExtendedHeaders: request the server to enable extended headers */ func (h *Libnbd) AioOptExtendedHeaders(optargs *AioOptExtendedHeadersOptargs) error { if h.h == nil { return closed_handle_error("aio_opt_extended_headers") } var c_err C.struct_error var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_extended_headers_wrapper(&c_err, h.h, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_extended_headers", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for AioOptStructuredReply. */ type AioOptStructuredReplyOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptStructuredReply: request the server to enable structured replies */ func (h *Libnbd) AioOptStructuredReply(optargs *AioOptStructuredReplyOptargs) error { if h.h == nil { return closed_handle_error("aio_opt_structured_reply") } var c_err C.struct_error var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_structured_reply_wrapper(&c_err, h.h, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_structured_reply", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for AioOptList. */ type AioOptListOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptList: request the server to list all exports during negotiation */ func (h *Libnbd) AioOptList(list ListCallback, optargs *AioOptListOptargs) error { if h.h == nil { return closed_handle_error("aio_opt_list") } var c_err C.struct_error var c_list C.nbd_list_callback c_list.callback = (*[0]byte)(C._nbd_list_callback_wrapper) c_list.free = (*[0]byte)(C._nbd_list_callback_free) list_cbid := registerCallbackId(list) c_list.user_data = C.alloc_cbid(C.long(list_cbid)) var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_list_wrapper(&c_err, h.h, c_list, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_list", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for AioOptInfo. */ type AioOptInfoOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptInfo: request the server for information about an export */ func (h *Libnbd) AioOptInfo(optargs *AioOptInfoOptargs) error { if h.h == nil { return closed_handle_error("aio_opt_info") } var c_err C.struct_error var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_info_wrapper(&c_err, h.h, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_info", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for AioOptListMetaContext. */ type AioOptListMetaContextOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptListMetaContext: request list of available meta contexts, using implicit query */ func (h *Libnbd) AioOptListMetaContext(context ContextCallback, optargs *AioOptListMetaContextOptargs) (uint, error) { if h.h == nil { return 0, closed_handle_error("aio_opt_list_meta_context") } var c_err C.struct_error var c_context C.nbd_context_callback c_context.callback = (*[0]byte)(C._nbd_context_callback_wrapper) c_context.free = (*[0]byte)(C._nbd_context_callback_free) context_cbid := registerCallbackId(context) c_context.user_data = C.alloc_cbid(C.long(context_cbid)) var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_list_meta_context_wrapper(&c_err, h.h, c_context, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_list_meta_context", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* Struct carrying optional arguments for AioOptListMetaContextQueries. */ type AioOptListMetaContextQueriesOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptListMetaContextQueries: request list of available meta contexts, using explicit query */ func (h *Libnbd) AioOptListMetaContextQueries(queries []string, context ContextCallback, optargs *AioOptListMetaContextQueriesOptargs) (uint, error) { if h.h == nil { return 0, closed_handle_error("aio_opt_list_meta_context_queries") } var c_err C.struct_error c_queries := arg_string_list(queries) defer free_string_list(c_queries) var c_context C.nbd_context_callback c_context.callback = (*[0]byte)(C._nbd_context_callback_wrapper) c_context.free = (*[0]byte)(C._nbd_context_callback_free) context_cbid := registerCallbackId(context) c_context.user_data = C.alloc_cbid(C.long(context_cbid)) var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_list_meta_context_queries_wrapper(&c_err, h.h, &c_queries[0], c_context, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_list_meta_context_queries", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* Struct carrying optional arguments for AioOptSetMetaContext. */ type AioOptSetMetaContextOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptSetMetaContext: select specific meta contexts, with implicit query list */ func (h *Libnbd) AioOptSetMetaContext(context ContextCallback, optargs *AioOptSetMetaContextOptargs) (uint, error) { if h.h == nil { return 0, closed_handle_error("aio_opt_set_meta_context") } var c_err C.struct_error var c_context C.nbd_context_callback c_context.callback = (*[0]byte)(C._nbd_context_callback_wrapper) c_context.free = (*[0]byte)(C._nbd_context_callback_free) context_cbid := registerCallbackId(context) c_context.user_data = C.alloc_cbid(C.long(context_cbid)) var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_set_meta_context_wrapper(&c_err, h.h, c_context, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_set_meta_context", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* Struct carrying optional arguments for AioOptSetMetaContextQueries. */ type AioOptSetMetaContextQueriesOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback } /* AioOptSetMetaContextQueries: select specific meta contexts, with explicit query list */ func (h *Libnbd) AioOptSetMetaContextQueries(queries []string, context ContextCallback, optargs *AioOptSetMetaContextQueriesOptargs) (uint, error) { if h.h == nil { return 0, closed_handle_error("aio_opt_set_meta_context_queries") } var c_err C.struct_error c_queries := arg_string_list(queries) defer free_string_list(c_queries) var c_context C.nbd_context_callback c_context.callback = (*[0]byte)(C._nbd_context_callback_wrapper) c_context.free = (*[0]byte)(C._nbd_context_callback_free) context_cbid := registerCallbackId(context) c_context.user_data = C.alloc_cbid(C.long(context_cbid)) var c_completion C.nbd_completion_callback if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } } ret := C._nbd_aio_opt_set_meta_context_queries_wrapper(&c_err, h.h, &c_queries[0], c_context, c_completion) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_opt_set_meta_context_queries", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* Struct carrying optional arguments for AioPread. */ type AioPreadOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioPread: read from the NBD server */ func (h *Libnbd) AioPread(buf AioBuffer, offset uint64, optargs *AioPreadOptargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_pread") } var c_err C.struct_error c_buf := buf.P c_count := C.size_t(buf.Size) c_offset := C.uint64_t(offset) var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_pread_wrapper(&c_err, h.h, c_buf, c_count, c_offset, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_pread", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for AioPreadStructured. */ type AioPreadStructuredOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioPreadStructured: read from the NBD server */ func (h *Libnbd) AioPreadStructured(buf AioBuffer, offset uint64, chunk ChunkCallback, optargs *AioPreadStructuredOptargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_pread_structured") } var c_err C.struct_error c_buf := buf.P c_count := C.size_t(buf.Size) c_offset := C.uint64_t(offset) var c_chunk C.nbd_chunk_callback c_chunk.callback = (*[0]byte)(C._nbd_chunk_callback_wrapper) c_chunk.free = (*[0]byte)(C._nbd_chunk_callback_free) chunk_cbid := registerCallbackId(chunk) c_chunk.user_data = C.alloc_cbid(C.long(chunk_cbid)) var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_pread_structured_wrapper(&c_err, h.h, c_buf, c_count, c_offset, c_chunk, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_pread_structured", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for AioPwrite. */ type AioPwriteOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioPwrite: write to the NBD server */ func (h *Libnbd) AioPwrite(buf AioBuffer, offset uint64, optargs *AioPwriteOptargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_pwrite") } var c_err C.struct_error c_buf := buf.P c_count := C.size_t(buf.Size) c_offset := C.uint64_t(offset) var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_pwrite_wrapper(&c_err, h.h, c_buf, c_count, c_offset, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_pwrite", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for AioDisconnect. */ type AioDisconnectOptargs struct { /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioDisconnect: disconnect from the NBD server */ func (h *Libnbd) AioDisconnect(optargs *AioDisconnectOptargs) error { if h.h == nil { return closed_handle_error("aio_disconnect") } var c_err C.struct_error var c_flags C.uint32_t if optargs != nil { if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_disconnect_wrapper(&c_err, h.h, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_disconnect", c_err) C.free_error(&c_err) return err } return nil } /* Struct carrying optional arguments for AioFlush. */ type AioFlushOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioFlush: send flush command to the NBD server */ func (h *Libnbd) AioFlush(optargs *AioFlushOptargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_flush") } var c_err C.struct_error var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_flush_wrapper(&c_err, h.h, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_flush", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for AioTrim. */ type AioTrimOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioTrim: send trim command to the NBD server */ func (h *Libnbd) AioTrim(count uint64, offset uint64, optargs *AioTrimOptargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_trim") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_trim_wrapper(&c_err, h.h, c_count, c_offset, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_trim", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for AioCache. */ type AioCacheOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioCache: send cache (prefetch) command to the NBD server */ func (h *Libnbd) AioCache(count uint64, offset uint64, optargs *AioCacheOptargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_cache") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_cache_wrapper(&c_err, h.h, c_count, c_offset, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_cache", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for AioZero. */ type AioZeroOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioZero: send write zeroes command to the NBD server */ func (h *Libnbd) AioZero(count uint64, offset uint64, optargs *AioZeroOptargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_zero") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_zero_wrapper(&c_err, h.h, c_count, c_offset, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_zero", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for AioBlockStatus. */ type AioBlockStatusOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioBlockStatus: send block status command, with 32-bit callback */ func (h *Libnbd) AioBlockStatus(count uint64, offset uint64, extent ExtentCallback, optargs *AioBlockStatusOptargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_block_status") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_extent C.nbd_extent_callback c_extent.callback = (*[0]byte)(C._nbd_extent_callback_wrapper) c_extent.free = (*[0]byte)(C._nbd_extent_callback_free) extent_cbid := registerCallbackId(extent) c_extent.user_data = C.alloc_cbid(C.long(extent_cbid)) var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_block_status_wrapper(&c_err, h.h, c_count, c_offset, c_extent, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_block_status", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for AioBlockStatus64. */ type AioBlockStatus64Optargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioBlockStatus64: send block status command, with 64-bit callback */ func (h *Libnbd) AioBlockStatus64(count uint64, offset uint64, extent64 Extent64Callback, optargs *AioBlockStatus64Optargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_block_status_64") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) var c_extent64 C.nbd_extent64_callback c_extent64.callback = (*[0]byte)(C._nbd_extent64_callback_wrapper) c_extent64.free = (*[0]byte)(C._nbd_extent64_callback_free) extent64_cbid := registerCallbackId(extent64) c_extent64.user_data = C.alloc_cbid(C.long(extent64_cbid)) var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_block_status_64_wrapper(&c_err, h.h, c_count, c_offset, c_extent64, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_block_status_64", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* Struct carrying optional arguments for AioBlockStatusFilter. */ type AioBlockStatusFilterOptargs struct { /* CompletionCallback field is ignored unless CompletionCallbackSet == true. */ CompletionCallbackSet bool CompletionCallback CompletionCallback /* Flags field is ignored unless FlagsSet == true. */ FlagsSet bool Flags CmdFlag } /* AioBlockStatusFilter: send filtered block status command to the NBD server */ func (h *Libnbd) AioBlockStatusFilter(count uint64, offset uint64, contexts []string, extent64 Extent64Callback, optargs *AioBlockStatusFilterOptargs) (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_block_status_filter") } var c_err C.struct_error c_count := C.uint64_t(count) c_offset := C.uint64_t(offset) c_contexts := arg_string_list(contexts) defer free_string_list(c_contexts) var c_extent64 C.nbd_extent64_callback c_extent64.callback = (*[0]byte)(C._nbd_extent64_callback_wrapper) c_extent64.free = (*[0]byte)(C._nbd_extent64_callback_free) extent64_cbid := registerCallbackId(extent64) c_extent64.user_data = C.alloc_cbid(C.long(extent64_cbid)) var c_completion C.nbd_completion_callback var c_flags C.uint32_t if optargs != nil { if optargs.CompletionCallbackSet { c_completion.callback = (*[0]byte)(C._nbd_completion_callback_wrapper) c_completion.free = (*[0]byte)(C._nbd_completion_callback_free) completion_cbid := registerCallbackId(optargs.CompletionCallback) c_completion.user_data = C.alloc_cbid(C.long(completion_cbid)) } if optargs.FlagsSet { c_flags = C.uint32_t(optargs.Flags) } } ret := C._nbd_aio_block_status_filter_wrapper(&c_err, h.h, c_count, c_offset, &c_contexts[0], c_extent64, c_completion, c_flags) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_block_status_filter", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* AioGetFd: return file descriptor associated with this connection */ func (h *Libnbd) AioGetFd() (int, error) { if h.h == nil { return 0, closed_handle_error("aio_get_fd") } var c_err C.struct_error ret := C._nbd_aio_get_fd_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_get_fd", c_err) C.free_error(&c_err) return 0, err } return int(ret), nil } /* AioGetDirection: return the read or write direction */ func (h *Libnbd) AioGetDirection() (uint, error) { if h.h == nil { return 0, closed_handle_error("aio_get_direction") } var c_err C.struct_error ret := C._nbd_aio_get_direction_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) return uint(ret), nil } /* AioNotifyRead: notify that the connection is readable */ func (h *Libnbd) AioNotifyRead() error { if h.h == nil { return closed_handle_error("aio_notify_read") } var c_err C.struct_error ret := C._nbd_aio_notify_read_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_notify_read", c_err) C.free_error(&c_err) return err } return nil } /* AioNotifyWrite: notify that the connection is writable */ func (h *Libnbd) AioNotifyWrite() error { if h.h == nil { return closed_handle_error("aio_notify_write") } var c_err C.struct_error ret := C._nbd_aio_notify_write_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_notify_write", c_err) C.free_error(&c_err) return err } return nil } /* AioIsCreated: check if the connection has just been created */ func (h *Libnbd) AioIsCreated() (bool, error) { if h.h == nil { return false, closed_handle_error("aio_is_created") } var c_err C.struct_error ret := C._nbd_aio_is_created_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_is_created", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* AioIsConnecting: check if the connection is connecting or handshaking */ func (h *Libnbd) AioIsConnecting() (bool, error) { if h.h == nil { return false, closed_handle_error("aio_is_connecting") } var c_err C.struct_error ret := C._nbd_aio_is_connecting_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_is_connecting", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* AioIsNegotiating: check if connection is ready to send handshake option */ func (h *Libnbd) AioIsNegotiating() (bool, error) { if h.h == nil { return false, closed_handle_error("aio_is_negotiating") } var c_err C.struct_error ret := C._nbd_aio_is_negotiating_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_is_negotiating", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* AioIsReady: check if the connection is in the ready state */ func (h *Libnbd) AioIsReady() (bool, error) { if h.h == nil { return false, closed_handle_error("aio_is_ready") } var c_err C.struct_error ret := C._nbd_aio_is_ready_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_is_ready", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* AioIsProcessing: check if the connection is processing a command */ func (h *Libnbd) AioIsProcessing() (bool, error) { if h.h == nil { return false, closed_handle_error("aio_is_processing") } var c_err C.struct_error ret := C._nbd_aio_is_processing_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_is_processing", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* AioIsDead: check if the connection is dead */ func (h *Libnbd) AioIsDead() (bool, error) { if h.h == nil { return false, closed_handle_error("aio_is_dead") } var c_err C.struct_error ret := C._nbd_aio_is_dead_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_is_dead", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* AioIsClosed: check if the connection is closed */ func (h *Libnbd) AioIsClosed() (bool, error) { if h.h == nil { return false, closed_handle_error("aio_is_closed") } var c_err C.struct_error ret := C._nbd_aio_is_closed_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_is_closed", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* AioCommandCompleted: check if the command completed */ func (h *Libnbd) AioCommandCompleted(cookie uint64) (bool, error) { if h.h == nil { return false, closed_handle_error("aio_command_completed") } var c_err C.struct_error c_cookie := C.uint64_t(cookie) ret := C._nbd_aio_command_completed_wrapper(&c_err, h.h, c_cookie) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_command_completed", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* AioPeekCommandCompleted: check if any command has completed */ func (h *Libnbd) AioPeekCommandCompleted() (uint64, error) { if h.h == nil { return 0, closed_handle_error("aio_peek_command_completed") } var c_err C.struct_error ret := C._nbd_aio_peek_command_completed_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_peek_command_completed", c_err) C.free_error(&c_err) return 0, err } return uint64(ret), nil } /* AioInFlight: check how many aio commands are still in flight */ func (h *Libnbd) AioInFlight() (uint, error) { if h.h == nil { return 0, closed_handle_error("aio_in_flight") } var c_err C.struct_error ret := C._nbd_aio_in_flight_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("aio_in_flight", c_err) C.free_error(&c_err) return 0, err } return uint(ret), nil } /* ConnectionState: return string describing the state of the connection */ func (h *Libnbd) ConnectionState() (*string, error) { if h.h == nil { return nil, closed_handle_error("connection_state") } var c_err C.struct_error ret := C._nbd_connection_state_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("connection_state", c_err) C.free_error(&c_err) return nil, err } /* ret is statically allocated, do not free it. */ r := C.GoString(ret) return &r, nil } /* GetPackageName: return the name of the library */ func (h *Libnbd) GetPackageName() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_package_name") } var c_err C.struct_error ret := C._nbd_get_package_name_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_package_name", c_err) C.free_error(&c_err) return nil, err } /* ret is statically allocated, do not free it. */ r := C.GoString(ret) return &r, nil } /* GetVersion: return the version of the library */ func (h *Libnbd) GetVersion() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_version") } var c_err C.struct_error ret := C._nbd_get_version_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_version", c_err) C.free_error(&c_err) return nil, err } /* ret is statically allocated, do not free it. */ r := C.GoString(ret) return &r, nil } /* KillSubprocess: kill server running as a subprocess */ func (h *Libnbd) KillSubprocess(signum int) error { if h.h == nil { return closed_handle_error("kill_subprocess") } var c_err C.struct_error c_signum := C.int(signum) ret := C._nbd_kill_subprocess_wrapper(&c_err, h.h, c_signum) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("kill_subprocess", c_err) C.free_error(&c_err) return err } return nil } /* SupportsTls: true if libnbd was compiled with support for TLS */ func (h *Libnbd) SupportsTls() (bool, error) { if h.h == nil { return false, closed_handle_error("supports_tls") } var c_err C.struct_error ret := C._nbd_supports_tls_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("supports_tls", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SupportsVsock: true if libnbd was compiled with support for AF_VSOCK */ func (h *Libnbd) SupportsVsock() (bool, error) { if h.h == nil { return false, closed_handle_error("supports_vsock") } var c_err C.struct_error ret := C._nbd_supports_vsock_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("supports_vsock", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* SupportsUri: true if libnbd was compiled with support for NBD URIs */ func (h *Libnbd) SupportsUri() (bool, error) { if h.h == nil { return false, closed_handle_error("supports_uri") } var c_err C.struct_error ret := C._nbd_supports_uri_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == -1 { err := get_error("supports_uri", c_err) C.free_error(&c_err) return false, err } return int(ret) != 0, nil } /* GetUri: construct an NBD URI for a connection */ func (h *Libnbd) GetUri() (*string, error) { if h.h == nil { return nil, closed_handle_error("get_uri") } var c_err C.struct_error ret := C._nbd_get_uri_wrapper(&c_err, h.h) runtime.KeepAlive(h.h) if ret == nil { err := get_error("get_uri", c_err) C.free_error(&c_err) return nil, err } r := C.GoString(ret) C.free(unsafe.Pointer(ret)) return &r, nil } libnbd-1.20.3/golang/closures.go0000444000175000017500000001135614615661025012157 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd /* #cgo pkg-config: libnbd #cgo CFLAGS: -D_GNU_SOURCE=1 #include #include "libnbd.h" #include "wrappers.h" */ import "C" import "unsafe" /* Closures. */ func copy_uint32_array(entries *C.uint32_t, count C.size_t) []uint32 { ret := make([]uint32, count) s := unsafe.Slice(entries, count) for i, item := range s { ret[i] = uint32(item) } return ret } func copy_extent_array(entries *C.nbd_extent, count C.size_t) []LibnbdExtent { ret := make([]LibnbdExtent, count) s := unsafe.Slice(entries, count) for i, item := range s { ret[i].Length = uint64(item.length) ret[i].Flags = uint64(item.flags) } return ret } type ChunkCallback func(subbuf []byte, offset uint64, status uint, error *int) int //export chunk_callback func chunk_callback(callbackid *C.long, subbuf unsafe.Pointer, count C.size_t, offset C.uint64_t, status C.uint, error *C.int) C.int { callbackFunc := getCallbackId(int(*callbackid)) callback, ok := callbackFunc.(ChunkCallback) if !ok { panic("inappropriate callback type") } go_error := int(*error) ret := callback(C.GoBytes(subbuf, C.int(count)), uint64(offset), uint(status), &go_error) *error = C.int(go_error) return C.int(ret) } type CompletionCallback func(error *int) int //export completion_callback func completion_callback(callbackid *C.long, error *C.int) C.int { callbackFunc := getCallbackId(int(*callbackid)) callback, ok := callbackFunc.(CompletionCallback) if !ok { panic("inappropriate callback type") } go_error := int(*error) ret := callback(&go_error) *error = C.int(go_error) return C.int(ret) } type DebugCallback func(context string, msg string) int //export debug_callback func debug_callback(callbackid *C.long, context *C.char, msg *C.char) C.int { callbackFunc := getCallbackId(int(*callbackid)) callback, ok := callbackFunc.(DebugCallback) if !ok { panic("inappropriate callback type") } ret := callback(C.GoString(context), C.GoString(msg)) return C.int(ret) } type ExtentCallback func(metacontext string, offset uint64, entries []uint32, error *int) int //export extent_callback func extent_callback(callbackid *C.long, metacontext *C.char, offset C.uint64_t, entries *C.uint32_t, nr_entries C.size_t, error *C.int) C.int { callbackFunc := getCallbackId(int(*callbackid)) callback, ok := callbackFunc.(ExtentCallback) if !ok { panic("inappropriate callback type") } go_error := int(*error) ret := callback(C.GoString(metacontext), uint64(offset), copy_uint32_array(entries, nr_entries), &go_error) *error = C.int(go_error) return C.int(ret) } type Extent64Callback func(metacontext string, offset uint64, entries []LibnbdExtent, error *int) int //export extent64_callback func extent64_callback(callbackid *C.long, metacontext *C.char, offset C.uint64_t, entries *C.nbd_extent, nr_entries C.size_t, error *C.int) C.int { callbackFunc := getCallbackId(int(*callbackid)) callback, ok := callbackFunc.(Extent64Callback) if !ok { panic("inappropriate callback type") } go_error := int(*error) ret := callback(C.GoString(metacontext), uint64(offset), copy_extent_array(entries, nr_entries), &go_error) *error = C.int(go_error) return C.int(ret) } type ListCallback func(name string, description string) int //export list_callback func list_callback(callbackid *C.long, name *C.char, description *C.char) C.int { callbackFunc := getCallbackId(int(*callbackid)) callback, ok := callbackFunc.(ListCallback) if !ok { panic("inappropriate callback type") } ret := callback(C.GoString(name), C.GoString(description)) return C.int(ret) } type ContextCallback func(name string) int //export context_callback func context_callback(callbackid *C.long, name *C.char) C.int { callbackFunc := getCallbackId(int(*callbackid)) callback, ok := callbackFunc.(ContextCallback) if !ok { panic("inappropriate callback type") } ret := callback(C.GoString(name)) return C.int(ret) } libnbd-1.20.3/golang/wrappers.go0000444000175000017500000016651314603303752012166 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd /* #cgo pkg-config: libnbd #cgo CFLAGS: -D_GNU_SOURCE=1 #include #include #include #include "libnbd.h" #include "wrappers.h" int _nbd_set_debug_wrapper (struct error *err, struct nbd_handle *h, bool debug) { #ifdef LIBNBD_HAVE_NBD_SET_DEBUG int ret; ret = nbd_set_debug (h, debug); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_DEBUG missing_function (err, "set_debug"); return -1; #endif } int _nbd_get_debug_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_DEBUG int ret; ret = nbd_get_debug (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_DEBUG missing_function (err, "get_debug"); return -1; #endif } int _nbd_set_debug_callback_wrapper (struct error *err, struct nbd_handle *h, nbd_debug_callback debug_callback) { #ifdef LIBNBD_HAVE_NBD_SET_DEBUG_CALLBACK int ret; ret = nbd_set_debug_callback (h, debug_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_DEBUG_CALLBACK missing_function (err, "set_debug_callback"); return -1; #endif } int _nbd_clear_debug_callback_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CLEAR_DEBUG_CALLBACK int ret; ret = nbd_clear_debug_callback (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CLEAR_DEBUG_CALLBACK missing_function (err, "clear_debug_callback"); return -1; #endif } uint64_t _nbd_stats_bytes_sent_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_STATS_BYTES_SENT uint64_t ret; ret = nbd_stats_bytes_sent (h); return ret; #else // !LIBNBD_HAVE_NBD_STATS_BYTES_SENT missing_function (err, "stats_bytes_sent"); #endif } uint64_t _nbd_stats_chunks_sent_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_STATS_CHUNKS_SENT uint64_t ret; ret = nbd_stats_chunks_sent (h); return ret; #else // !LIBNBD_HAVE_NBD_STATS_CHUNKS_SENT missing_function (err, "stats_chunks_sent"); #endif } uint64_t _nbd_stats_bytes_received_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_STATS_BYTES_RECEIVED uint64_t ret; ret = nbd_stats_bytes_received (h); return ret; #else // !LIBNBD_HAVE_NBD_STATS_BYTES_RECEIVED missing_function (err, "stats_bytes_received"); #endif } uint64_t _nbd_stats_chunks_received_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_STATS_CHUNKS_RECEIVED uint64_t ret; ret = nbd_stats_chunks_received (h); return ret; #else // !LIBNBD_HAVE_NBD_STATS_CHUNKS_RECEIVED missing_function (err, "stats_chunks_received"); #endif } int _nbd_set_handle_name_wrapper (struct error *err, struct nbd_handle *h, const char *handle_name) { #ifdef LIBNBD_HAVE_NBD_SET_HANDLE_NAME int ret; ret = nbd_set_handle_name (h, handle_name); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_HANDLE_NAME missing_function (err, "set_handle_name"); return -1; #endif } char * _nbd_get_handle_name_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_HANDLE_NAME char * ret; ret = nbd_get_handle_name (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_HANDLE_NAME missing_function (err, "get_handle_name"); return NULL; #endif } uintptr_t _nbd_set_private_data_wrapper (struct error *err, struct nbd_handle *h, uintptr_t private_data) { #ifdef LIBNBD_HAVE_NBD_SET_PRIVATE_DATA uintptr_t ret; ret = nbd_set_private_data (h, private_data); return ret; #else // !LIBNBD_HAVE_NBD_SET_PRIVATE_DATA missing_function (err, "set_private_data"); #endif } uintptr_t _nbd_get_private_data_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_PRIVATE_DATA uintptr_t ret; ret = nbd_get_private_data (h); return ret; #else // !LIBNBD_HAVE_NBD_GET_PRIVATE_DATA missing_function (err, "get_private_data"); #endif } int _nbd_set_export_name_wrapper (struct error *err, struct nbd_handle *h, const char *export_name) { #ifdef LIBNBD_HAVE_NBD_SET_EXPORT_NAME int ret; ret = nbd_set_export_name (h, export_name); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_EXPORT_NAME missing_function (err, "set_export_name"); return -1; #endif } char * _nbd_get_export_name_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_EXPORT_NAME char * ret; ret = nbd_get_export_name (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_EXPORT_NAME missing_function (err, "get_export_name"); return NULL; #endif } int _nbd_set_request_block_size_wrapper (struct error *err, struct nbd_handle *h, bool request) { #ifdef LIBNBD_HAVE_NBD_SET_REQUEST_BLOCK_SIZE int ret; ret = nbd_set_request_block_size (h, request); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_REQUEST_BLOCK_SIZE missing_function (err, "set_request_block_size"); return -1; #endif } int _nbd_get_request_block_size_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_REQUEST_BLOCK_SIZE int ret; ret = nbd_get_request_block_size (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_REQUEST_BLOCK_SIZE missing_function (err, "get_request_block_size"); return -1; #endif } int _nbd_set_full_info_wrapper (struct error *err, struct nbd_handle *h, bool request) { #ifdef LIBNBD_HAVE_NBD_SET_FULL_INFO int ret; ret = nbd_set_full_info (h, request); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_FULL_INFO missing_function (err, "set_full_info"); return -1; #endif } int _nbd_get_full_info_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_FULL_INFO int ret; ret = nbd_get_full_info (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_FULL_INFO missing_function (err, "get_full_info"); return -1; #endif } char * _nbd_get_canonical_export_name_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_CANONICAL_EXPORT_NAME char * ret; ret = nbd_get_canonical_export_name (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_CANONICAL_EXPORT_NAME missing_function (err, "get_canonical_export_name"); return NULL; #endif } char * _nbd_get_export_description_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION char * ret; ret = nbd_get_export_description (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_EXPORT_DESCRIPTION missing_function (err, "get_export_description"); return NULL; #endif } int _nbd_set_tls_wrapper (struct error *err, struct nbd_handle *h, int tls) { #ifdef LIBNBD_HAVE_NBD_SET_TLS int ret; ret = nbd_set_tls (h, tls); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_TLS missing_function (err, "set_tls"); return -1; #endif } int _nbd_get_tls_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_TLS int ret; ret = nbd_get_tls (h); return ret; #else // !LIBNBD_HAVE_NBD_GET_TLS missing_function (err, "get_tls"); #endif } int _nbd_get_tls_negotiated_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_TLS_NEGOTIATED int ret; ret = nbd_get_tls_negotiated (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_TLS_NEGOTIATED missing_function (err, "get_tls_negotiated"); return -1; #endif } int _nbd_set_tls_certificates_wrapper (struct error *err, struct nbd_handle *h, const char *dir) { #ifdef LIBNBD_HAVE_NBD_SET_TLS_CERTIFICATES int ret; ret = nbd_set_tls_certificates (h, dir); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_TLS_CERTIFICATES missing_function (err, "set_tls_certificates"); return -1; #endif } int _nbd_set_tls_verify_peer_wrapper (struct error *err, struct nbd_handle *h, bool verify) { #ifdef LIBNBD_HAVE_NBD_SET_TLS_VERIFY_PEER int ret; ret = nbd_set_tls_verify_peer (h, verify); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_TLS_VERIFY_PEER missing_function (err, "set_tls_verify_peer"); return -1; #endif } int _nbd_get_tls_verify_peer_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_TLS_VERIFY_PEER int ret; ret = nbd_get_tls_verify_peer (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_TLS_VERIFY_PEER missing_function (err, "get_tls_verify_peer"); return -1; #endif } int _nbd_set_tls_username_wrapper (struct error *err, struct nbd_handle *h, const char *username) { #ifdef LIBNBD_HAVE_NBD_SET_TLS_USERNAME int ret; ret = nbd_set_tls_username (h, username); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_TLS_USERNAME missing_function (err, "set_tls_username"); return -1; #endif } char * _nbd_get_tls_username_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_TLS_USERNAME char * ret; ret = nbd_get_tls_username (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_TLS_USERNAME missing_function (err, "get_tls_username"); return NULL; #endif } int _nbd_set_tls_psk_file_wrapper (struct error *err, struct nbd_handle *h, const char *filename) { #ifdef LIBNBD_HAVE_NBD_SET_TLS_PSK_FILE int ret; ret = nbd_set_tls_psk_file (h, filename); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_TLS_PSK_FILE missing_function (err, "set_tls_psk_file"); return -1; #endif } int _nbd_set_request_extended_headers_wrapper (struct error *err, struct nbd_handle *h, bool request) { #ifdef LIBNBD_HAVE_NBD_SET_REQUEST_EXTENDED_HEADERS int ret; ret = nbd_set_request_extended_headers (h, request); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_REQUEST_EXTENDED_HEADERS missing_function (err, "set_request_extended_headers"); return -1; #endif } int _nbd_get_request_extended_headers_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_REQUEST_EXTENDED_HEADERS int ret; ret = nbd_get_request_extended_headers (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_REQUEST_EXTENDED_HEADERS missing_function (err, "get_request_extended_headers"); return -1; #endif } int _nbd_get_extended_headers_negotiated_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_EXTENDED_HEADERS_NEGOTIATED int ret; ret = nbd_get_extended_headers_negotiated (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_EXTENDED_HEADERS_NEGOTIATED missing_function (err, "get_extended_headers_negotiated"); return -1; #endif } int _nbd_set_request_structured_replies_wrapper (struct error *err, struct nbd_handle *h, bool request) { #ifdef LIBNBD_HAVE_NBD_SET_REQUEST_STRUCTURED_REPLIES int ret; ret = nbd_set_request_structured_replies (h, request); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_REQUEST_STRUCTURED_REPLIES missing_function (err, "set_request_structured_replies"); return -1; #endif } int _nbd_get_request_structured_replies_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_REQUEST_STRUCTURED_REPLIES int ret; ret = nbd_get_request_structured_replies (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_REQUEST_STRUCTURED_REPLIES missing_function (err, "get_request_structured_replies"); return -1; #endif } int _nbd_get_structured_replies_negotiated_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_STRUCTURED_REPLIES_NEGOTIATED int ret; ret = nbd_get_structured_replies_negotiated (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_STRUCTURED_REPLIES_NEGOTIATED missing_function (err, "get_structured_replies_negotiated"); return -1; #endif } int _nbd_set_request_meta_context_wrapper (struct error *err, struct nbd_handle *h, bool request) { #ifdef LIBNBD_HAVE_NBD_SET_REQUEST_META_CONTEXT int ret; ret = nbd_set_request_meta_context (h, request); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_REQUEST_META_CONTEXT missing_function (err, "set_request_meta_context"); return -1; #endif } int _nbd_get_request_meta_context_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_REQUEST_META_CONTEXT int ret; ret = nbd_get_request_meta_context (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_REQUEST_META_CONTEXT missing_function (err, "get_request_meta_context"); return -1; #endif } int _nbd_set_handshake_flags_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_SET_HANDSHAKE_FLAGS int ret; ret = nbd_set_handshake_flags (h, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_HANDSHAKE_FLAGS missing_function (err, "set_handshake_flags"); return -1; #endif } uint32_t _nbd_get_handshake_flags_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_HANDSHAKE_FLAGS uint32_t ret; ret = nbd_get_handshake_flags (h); return ret; #else // !LIBNBD_HAVE_NBD_GET_HANDSHAKE_FLAGS missing_function (err, "get_handshake_flags"); #endif } int _nbd_set_pread_initialize_wrapper (struct error *err, struct nbd_handle *h, bool request) { #ifdef LIBNBD_HAVE_NBD_SET_PREAD_INITIALIZE int ret; ret = nbd_set_pread_initialize (h, request); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_PREAD_INITIALIZE missing_function (err, "set_pread_initialize"); return -1; #endif } int _nbd_get_pread_initialize_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_PREAD_INITIALIZE int ret; ret = nbd_get_pread_initialize (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_PREAD_INITIALIZE missing_function (err, "get_pread_initialize"); return -1; #endif } int _nbd_set_strict_mode_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_SET_STRICT_MODE int ret; ret = nbd_set_strict_mode (h, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_STRICT_MODE missing_function (err, "set_strict_mode"); return -1; #endif } uint32_t _nbd_get_strict_mode_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_STRICT_MODE uint32_t ret; ret = nbd_get_strict_mode (h); return ret; #else // !LIBNBD_HAVE_NBD_GET_STRICT_MODE missing_function (err, "get_strict_mode"); #endif } int _nbd_set_opt_mode_wrapper (struct error *err, struct nbd_handle *h, bool enable) { #ifdef LIBNBD_HAVE_NBD_SET_OPT_MODE int ret; ret = nbd_set_opt_mode (h, enable); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_OPT_MODE missing_function (err, "set_opt_mode"); return -1; #endif } int _nbd_get_opt_mode_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_OPT_MODE int ret; ret = nbd_get_opt_mode (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_OPT_MODE missing_function (err, "get_opt_mode"); return -1; #endif } int _nbd_opt_go_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_OPT_GO int ret; ret = nbd_opt_go (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_GO missing_function (err, "opt_go"); return -1; #endif } int _nbd_opt_abort_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_OPT_ABORT int ret; ret = nbd_opt_abort (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_ABORT missing_function (err, "opt_abort"); return -1; #endif } int _nbd_opt_starttls_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_OPT_STARTTLS int ret; ret = nbd_opt_starttls (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_STARTTLS missing_function (err, "opt_starttls"); return -1; #endif } int _nbd_opt_extended_headers_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_OPT_EXTENDED_HEADERS int ret; ret = nbd_opt_extended_headers (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_EXTENDED_HEADERS missing_function (err, "opt_extended_headers"); return -1; #endif } int _nbd_opt_structured_reply_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_OPT_STRUCTURED_REPLY int ret; ret = nbd_opt_structured_reply (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_STRUCTURED_REPLY missing_function (err, "opt_structured_reply"); return -1; #endif } int _nbd_opt_list_wrapper (struct error *err, struct nbd_handle *h, nbd_list_callback list_callback) { #ifdef LIBNBD_HAVE_NBD_OPT_LIST int ret; ret = nbd_opt_list (h, list_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_LIST missing_function (err, "opt_list"); return -1; #endif } int _nbd_opt_info_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_OPT_INFO int ret; ret = nbd_opt_info (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_INFO missing_function (err, "opt_info"); return -1; #endif } int _nbd_opt_list_meta_context_wrapper (struct error *err, struct nbd_handle *h, nbd_context_callback context_callback) { #ifdef LIBNBD_HAVE_NBD_OPT_LIST_META_CONTEXT int ret; ret = nbd_opt_list_meta_context (h, context_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_LIST_META_CONTEXT missing_function (err, "opt_list_meta_context"); return -1; #endif } int _nbd_opt_list_meta_context_queries_wrapper (struct error *err, struct nbd_handle *h, char **queries, nbd_context_callback context_callback) { #ifdef LIBNBD_HAVE_NBD_OPT_LIST_META_CONTEXT_QUERIES int ret; ret = nbd_opt_list_meta_context_queries (h, queries, context_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_LIST_META_CONTEXT_QUERIES missing_function (err, "opt_list_meta_context_queries"); return -1; #endif } int _nbd_opt_set_meta_context_wrapper (struct error *err, struct nbd_handle *h, nbd_context_callback context_callback) { #ifdef LIBNBD_HAVE_NBD_OPT_SET_META_CONTEXT int ret; ret = nbd_opt_set_meta_context (h, context_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_SET_META_CONTEXT missing_function (err, "opt_set_meta_context"); return -1; #endif } int _nbd_opt_set_meta_context_queries_wrapper (struct error *err, struct nbd_handle *h, char **queries, nbd_context_callback context_callback) { #ifdef LIBNBD_HAVE_NBD_OPT_SET_META_CONTEXT_QUERIES int ret; ret = nbd_opt_set_meta_context_queries (h, queries, context_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_OPT_SET_META_CONTEXT_QUERIES missing_function (err, "opt_set_meta_context_queries"); return -1; #endif } int _nbd_add_meta_context_wrapper (struct error *err, struct nbd_handle *h, const char *name) { #ifdef LIBNBD_HAVE_NBD_ADD_META_CONTEXT int ret; ret = nbd_add_meta_context (h, name); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_ADD_META_CONTEXT missing_function (err, "add_meta_context"); return -1; #endif } ssize_t _nbd_get_nr_meta_contexts_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_NR_META_CONTEXTS ssize_t ret; ret = nbd_get_nr_meta_contexts (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_NR_META_CONTEXTS missing_function (err, "get_nr_meta_contexts"); return -1; #endif } char * _nbd_get_meta_context_wrapper (struct error *err, struct nbd_handle *h, size_t i) { #ifdef LIBNBD_HAVE_NBD_GET_META_CONTEXT char * ret; ret = nbd_get_meta_context (h, i); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_META_CONTEXT missing_function (err, "get_meta_context"); return NULL; #endif } int _nbd_clear_meta_contexts_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CLEAR_META_CONTEXTS int ret; ret = nbd_clear_meta_contexts (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CLEAR_META_CONTEXTS missing_function (err, "clear_meta_contexts"); return -1; #endif } int _nbd_set_uri_allow_transports_wrapper (struct error *err, struct nbd_handle *h, uint32_t mask) { #ifdef LIBNBD_HAVE_NBD_SET_URI_ALLOW_TRANSPORTS int ret; ret = nbd_set_uri_allow_transports (h, mask); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_URI_ALLOW_TRANSPORTS missing_function (err, "set_uri_allow_transports"); return -1; #endif } int _nbd_set_uri_allow_tls_wrapper (struct error *err, struct nbd_handle *h, int tls) { #ifdef LIBNBD_HAVE_NBD_SET_URI_ALLOW_TLS int ret; ret = nbd_set_uri_allow_tls (h, tls); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_URI_ALLOW_TLS missing_function (err, "set_uri_allow_tls"); return -1; #endif } int _nbd_set_uri_allow_local_file_wrapper (struct error *err, struct nbd_handle *h, bool allow) { #ifdef LIBNBD_HAVE_NBD_SET_URI_ALLOW_LOCAL_FILE int ret; ret = nbd_set_uri_allow_local_file (h, allow); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_URI_ALLOW_LOCAL_FILE missing_function (err, "set_uri_allow_local_file"); return -1; #endif } int _nbd_connect_uri_wrapper (struct error *err, struct nbd_handle *h, const char *uri) { #ifdef LIBNBD_HAVE_NBD_CONNECT_URI int ret; ret = nbd_connect_uri (h, uri); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CONNECT_URI missing_function (err, "connect_uri"); return -1; #endif } int _nbd_connect_unix_wrapper (struct error *err, struct nbd_handle *h, const char *unixsocket) { #ifdef LIBNBD_HAVE_NBD_CONNECT_UNIX int ret; ret = nbd_connect_unix (h, unixsocket); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CONNECT_UNIX missing_function (err, "connect_unix"); return -1; #endif } int _nbd_connect_vsock_wrapper (struct error *err, struct nbd_handle *h, uint32_t cid, uint32_t port) { #ifdef LIBNBD_HAVE_NBD_CONNECT_VSOCK int ret; ret = nbd_connect_vsock (h, cid, port); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CONNECT_VSOCK missing_function (err, "connect_vsock"); return -1; #endif } int _nbd_connect_tcp_wrapper (struct error *err, struct nbd_handle *h, const char *hostname, const char *port) { #ifdef LIBNBD_HAVE_NBD_CONNECT_TCP int ret; ret = nbd_connect_tcp (h, hostname, port); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CONNECT_TCP missing_function (err, "connect_tcp"); return -1; #endif } int _nbd_connect_socket_wrapper (struct error *err, struct nbd_handle *h, int sock) { #ifdef LIBNBD_HAVE_NBD_CONNECT_SOCKET int ret; ret = nbd_connect_socket (h, sock); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CONNECT_SOCKET missing_function (err, "connect_socket"); return -1; #endif } int _nbd_connect_command_wrapper (struct error *err, struct nbd_handle *h, char **argv) { #ifdef LIBNBD_HAVE_NBD_CONNECT_COMMAND int ret; ret = nbd_connect_command (h, argv); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CONNECT_COMMAND missing_function (err, "connect_command"); return -1; #endif } int _nbd_connect_systemd_socket_activation_wrapper (struct error *err, struct nbd_handle *h, char **argv) { #ifdef LIBNBD_HAVE_NBD_CONNECT_SYSTEMD_SOCKET_ACTIVATION int ret; ret = nbd_connect_systemd_socket_activation (h, argv); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CONNECT_SYSTEMD_SOCKET_ACTIVATION missing_function (err, "connect_systemd_socket_activation"); return -1; #endif } int _nbd_set_socket_activation_name_wrapper (struct error *err, struct nbd_handle *h, const char *socket_name) { #ifdef LIBNBD_HAVE_NBD_SET_SOCKET_ACTIVATION_NAME int ret; ret = nbd_set_socket_activation_name (h, socket_name); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SET_SOCKET_ACTIVATION_NAME missing_function (err, "set_socket_activation_name"); return -1; #endif } char * _nbd_get_socket_activation_name_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_SOCKET_ACTIVATION_NAME char * ret; ret = nbd_get_socket_activation_name (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_SOCKET_ACTIVATION_NAME missing_function (err, "get_socket_activation_name"); return NULL; #endif } int _nbd_is_read_only_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_IS_READ_ONLY int ret; ret = nbd_is_read_only (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_IS_READ_ONLY missing_function (err, "is_read_only"); return -1; #endif } int _nbd_can_flush_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CAN_FLUSH int ret; ret = nbd_can_flush (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_FLUSH missing_function (err, "can_flush"); return -1; #endif } int _nbd_can_fua_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CAN_FUA int ret; ret = nbd_can_fua (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_FUA missing_function (err, "can_fua"); return -1; #endif } int _nbd_is_rotational_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_IS_ROTATIONAL int ret; ret = nbd_is_rotational (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_IS_ROTATIONAL missing_function (err, "is_rotational"); return -1; #endif } int _nbd_can_trim_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CAN_TRIM int ret; ret = nbd_can_trim (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_TRIM missing_function (err, "can_trim"); return -1; #endif } int _nbd_can_zero_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CAN_ZERO int ret; ret = nbd_can_zero (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_ZERO missing_function (err, "can_zero"); return -1; #endif } int _nbd_can_fast_zero_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CAN_FAST_ZERO int ret; ret = nbd_can_fast_zero (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_FAST_ZERO missing_function (err, "can_fast_zero"); return -1; #endif } int _nbd_can_block_status_payload_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD int ret; ret = nbd_can_block_status_payload (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_BLOCK_STATUS_PAYLOAD missing_function (err, "can_block_status_payload"); return -1; #endif } int _nbd_can_df_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CAN_DF int ret; ret = nbd_can_df (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_DF missing_function (err, "can_df"); return -1; #endif } int _nbd_can_multi_conn_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CAN_MULTI_CONN int ret; ret = nbd_can_multi_conn (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_MULTI_CONN missing_function (err, "can_multi_conn"); return -1; #endif } int _nbd_can_cache_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CAN_CACHE int ret; ret = nbd_can_cache (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_CACHE missing_function (err, "can_cache"); return -1; #endif } int _nbd_can_meta_context_wrapper (struct error *err, struct nbd_handle *h, const char *metacontext) { #ifdef LIBNBD_HAVE_NBD_CAN_META_CONTEXT int ret; ret = nbd_can_meta_context (h, metacontext); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CAN_META_CONTEXT missing_function (err, "can_meta_context"); return -1; #endif } const char * _nbd_get_protocol_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_PROTOCOL const char * ret; ret = nbd_get_protocol (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_PROTOCOL missing_function (err, "get_protocol"); return NULL; #endif } int64_t _nbd_get_size_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_SIZE int64_t ret; ret = nbd_get_size (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_SIZE missing_function (err, "get_size"); return -1; #endif } int64_t _nbd_get_block_size_wrapper (struct error *err, struct nbd_handle *h, int size_type) { #ifdef LIBNBD_HAVE_NBD_GET_BLOCK_SIZE int64_t ret; ret = nbd_get_block_size (h, size_type); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_BLOCK_SIZE missing_function (err, "get_block_size"); return -1; #endif } int _nbd_pread_wrapper (struct error *err, struct nbd_handle *h, void *buf, size_t count, uint64_t offset, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_PREAD int ret; ret = nbd_pread (h, buf, count, offset, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_PREAD missing_function (err, "pread"); return -1; #endif } int _nbd_pread_structured_wrapper (struct error *err, struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_PREAD_STRUCTURED int ret; ret = nbd_pread_structured (h, buf, count, offset, chunk_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_PREAD_STRUCTURED missing_function (err, "pread_structured"); return -1; #endif } int _nbd_pwrite_wrapper (struct error *err, struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_PWRITE int ret; ret = nbd_pwrite (h, buf, count, offset, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_PWRITE missing_function (err, "pwrite"); return -1; #endif } int _nbd_shutdown_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_SHUTDOWN int ret; ret = nbd_shutdown (h, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SHUTDOWN missing_function (err, "shutdown"); return -1; #endif } int _nbd_flush_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_FLUSH int ret; ret = nbd_flush (h, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_FLUSH missing_function (err, "flush"); return -1; #endif } int _nbd_trim_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_TRIM int ret; ret = nbd_trim (h, count, offset, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_TRIM missing_function (err, "trim"); return -1; #endif } int _nbd_cache_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_CACHE int ret; ret = nbd_cache (h, count, offset, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CACHE missing_function (err, "cache"); return -1; #endif } int _nbd_zero_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_ZERO int ret; ret = nbd_zero (h, count, offset, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_ZERO missing_function (err, "zero"); return -1; #endif } int _nbd_block_status_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_BLOCK_STATUS int ret; ret = nbd_block_status (h, count, offset, extent_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_BLOCK_STATUS missing_function (err, "block_status"); return -1; #endif } int _nbd_block_status_64_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_BLOCK_STATUS_64 int ret; ret = nbd_block_status_64 (h, count, offset, extent64_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_BLOCK_STATUS_64 missing_function (err, "block_status_64"); return -1; #endif } int _nbd_block_status_filter_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_BLOCK_STATUS_FILTER int ret; ret = nbd_block_status_filter (h, count, offset, contexts, extent64_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_BLOCK_STATUS_FILTER missing_function (err, "block_status_filter"); return -1; #endif } int _nbd_poll_wrapper (struct error *err, struct nbd_handle *h, int timeout) { #ifdef LIBNBD_HAVE_NBD_POLL int ret; ret = nbd_poll (h, timeout); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_POLL missing_function (err, "poll"); return -1; #endif } int _nbd_poll2_wrapper (struct error *err, struct nbd_handle *h, int fd, int timeout) { #ifdef LIBNBD_HAVE_NBD_POLL2 int ret; ret = nbd_poll2 (h, fd, timeout); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_POLL2 missing_function (err, "poll2"); return -1; #endif } int _nbd_aio_connect_wrapper (struct error *err, struct nbd_handle *h, const struct sockaddr *addr, socklen_t addrlen) { #ifdef LIBNBD_HAVE_NBD_AIO_CONNECT int ret; ret = nbd_aio_connect (h, addr, addrlen); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_CONNECT missing_function (err, "aio_connect"); return -1; #endif } int _nbd_aio_connect_uri_wrapper (struct error *err, struct nbd_handle *h, const char *uri) { #ifdef LIBNBD_HAVE_NBD_AIO_CONNECT_URI int ret; ret = nbd_aio_connect_uri (h, uri); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_CONNECT_URI missing_function (err, "aio_connect_uri"); return -1; #endif } int _nbd_aio_connect_unix_wrapper (struct error *err, struct nbd_handle *h, const char *unixsocket) { #ifdef LIBNBD_HAVE_NBD_AIO_CONNECT_UNIX int ret; ret = nbd_aio_connect_unix (h, unixsocket); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_CONNECT_UNIX missing_function (err, "aio_connect_unix"); return -1; #endif } int _nbd_aio_connect_vsock_wrapper (struct error *err, struct nbd_handle *h, uint32_t cid, uint32_t port) { #ifdef LIBNBD_HAVE_NBD_AIO_CONNECT_VSOCK int ret; ret = nbd_aio_connect_vsock (h, cid, port); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_CONNECT_VSOCK missing_function (err, "aio_connect_vsock"); return -1; #endif } int _nbd_aio_connect_tcp_wrapper (struct error *err, struct nbd_handle *h, const char *hostname, const char *port) { #ifdef LIBNBD_HAVE_NBD_AIO_CONNECT_TCP int ret; ret = nbd_aio_connect_tcp (h, hostname, port); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_CONNECT_TCP missing_function (err, "aio_connect_tcp"); return -1; #endif } int _nbd_aio_connect_socket_wrapper (struct error *err, struct nbd_handle *h, int sock) { #ifdef LIBNBD_HAVE_NBD_AIO_CONNECT_SOCKET int ret; ret = nbd_aio_connect_socket (h, sock); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_CONNECT_SOCKET missing_function (err, "aio_connect_socket"); return -1; #endif } int _nbd_aio_connect_command_wrapper (struct error *err, struct nbd_handle *h, char **argv) { #ifdef LIBNBD_HAVE_NBD_AIO_CONNECT_COMMAND int ret; ret = nbd_aio_connect_command (h, argv); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_CONNECT_COMMAND missing_function (err, "aio_connect_command"); return -1; #endif } int _nbd_aio_connect_systemd_socket_activation_wrapper (struct error *err, struct nbd_handle *h, char **argv) { #ifdef LIBNBD_HAVE_NBD_AIO_CONNECT_SYSTEMD_SOCKET_ACTIVATION int ret; ret = nbd_aio_connect_systemd_socket_activation (h, argv); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_CONNECT_SYSTEMD_SOCKET_ACTIVATION missing_function (err, "aio_connect_systemd_socket_activation"); return -1; #endif } int _nbd_aio_opt_go_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_GO int ret; ret = nbd_aio_opt_go (h, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_GO missing_function (err, "aio_opt_go"); return -1; #endif } int _nbd_aio_opt_abort_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_ABORT int ret; ret = nbd_aio_opt_abort (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_ABORT missing_function (err, "aio_opt_abort"); return -1; #endif } int _nbd_aio_opt_starttls_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_STARTTLS int ret; ret = nbd_aio_opt_starttls (h, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_STARTTLS missing_function (err, "aio_opt_starttls"); return -1; #endif } int _nbd_aio_opt_extended_headers_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_EXTENDED_HEADERS int ret; ret = nbd_aio_opt_extended_headers (h, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_EXTENDED_HEADERS missing_function (err, "aio_opt_extended_headers"); return -1; #endif } int _nbd_aio_opt_structured_reply_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_STRUCTURED_REPLY int ret; ret = nbd_aio_opt_structured_reply (h, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_STRUCTURED_REPLY missing_function (err, "aio_opt_structured_reply"); return -1; #endif } int _nbd_aio_opt_list_wrapper (struct error *err, struct nbd_handle *h, nbd_list_callback list_callback, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_LIST int ret; ret = nbd_aio_opt_list (h, list_callback, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_LIST missing_function (err, "aio_opt_list"); return -1; #endif } int _nbd_aio_opt_info_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_INFO int ret; ret = nbd_aio_opt_info (h, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_INFO missing_function (err, "aio_opt_info"); return -1; #endif } int _nbd_aio_opt_list_meta_context_wrapper (struct error *err, struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_LIST_META_CONTEXT int ret; ret = nbd_aio_opt_list_meta_context (h, context_callback, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_LIST_META_CONTEXT missing_function (err, "aio_opt_list_meta_context"); return -1; #endif } int _nbd_aio_opt_list_meta_context_queries_wrapper (struct error *err, struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_LIST_META_CONTEXT_QUERIES int ret; ret = nbd_aio_opt_list_meta_context_queries (h, queries, context_callback, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_LIST_META_CONTEXT_QUERIES missing_function (err, "aio_opt_list_meta_context_queries"); return -1; #endif } int _nbd_aio_opt_set_meta_context_wrapper (struct error *err, struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_SET_META_CONTEXT int ret; ret = nbd_aio_opt_set_meta_context (h, context_callback, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_SET_META_CONTEXT missing_function (err, "aio_opt_set_meta_context"); return -1; #endif } int _nbd_aio_opt_set_meta_context_queries_wrapper (struct error *err, struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback) { #ifdef LIBNBD_HAVE_NBD_AIO_OPT_SET_META_CONTEXT_QUERIES int ret; ret = nbd_aio_opt_set_meta_context_queries (h, queries, context_callback, completion_callback); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_OPT_SET_META_CONTEXT_QUERIES missing_function (err, "aio_opt_set_meta_context_queries"); return -1; #endif } int64_t _nbd_aio_pread_wrapper (struct error *err, struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_PREAD int64_t ret; ret = nbd_aio_pread (h, buf, count, offset, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_PREAD missing_function (err, "aio_pread"); return -1; #endif } int64_t _nbd_aio_pread_structured_wrapper (struct error *err, struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_PREAD_STRUCTURED int64_t ret; ret = nbd_aio_pread_structured (h, buf, count, offset, chunk_callback, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_PREAD_STRUCTURED missing_function (err, "aio_pread_structured"); return -1; #endif } int64_t _nbd_aio_pwrite_wrapper (struct error *err, struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_PWRITE int64_t ret; ret = nbd_aio_pwrite (h, buf, count, offset, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_PWRITE missing_function (err, "aio_pwrite"); return -1; #endif } int _nbd_aio_disconnect_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_DISCONNECT int ret; ret = nbd_aio_disconnect (h, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_DISCONNECT missing_function (err, "aio_disconnect"); return -1; #endif } int64_t _nbd_aio_flush_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_FLUSH int64_t ret; ret = nbd_aio_flush (h, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_FLUSH missing_function (err, "aio_flush"); return -1; #endif } int64_t _nbd_aio_trim_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_TRIM int64_t ret; ret = nbd_aio_trim (h, count, offset, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_TRIM missing_function (err, "aio_trim"); return -1; #endif } int64_t _nbd_aio_cache_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_CACHE int64_t ret; ret = nbd_aio_cache (h, count, offset, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_CACHE missing_function (err, "aio_cache"); return -1; #endif } int64_t _nbd_aio_zero_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_ZERO int64_t ret; ret = nbd_aio_zero (h, count, offset, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_ZERO missing_function (err, "aio_zero"); return -1; #endif } int64_t _nbd_aio_block_status_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS int64_t ret; ret = nbd_aio_block_status (h, count, offset, extent_callback, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS missing_function (err, "aio_block_status"); return -1; #endif } int64_t _nbd_aio_block_status_64_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS_64 int64_t ret; ret = nbd_aio_block_status_64 (h, count, offset, extent64_callback, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS_64 missing_function (err, "aio_block_status_64"); return -1; #endif } int64_t _nbd_aio_block_status_filter_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags) { #ifdef LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS_FILTER int64_t ret; ret = nbd_aio_block_status_filter (h, count, offset, contexts, extent64_callback, completion_callback, flags); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_BLOCK_STATUS_FILTER missing_function (err, "aio_block_status_filter"); return -1; #endif } int _nbd_aio_get_fd_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_GET_FD int ret; ret = nbd_aio_get_fd (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_GET_FD missing_function (err, "aio_get_fd"); return -1; #endif } unsigned _nbd_aio_get_direction_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_GET_DIRECTION unsigned ret; ret = nbd_aio_get_direction (h); return ret; #else // !LIBNBD_HAVE_NBD_AIO_GET_DIRECTION missing_function (err, "aio_get_direction"); #endif } int _nbd_aio_notify_read_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_NOTIFY_READ int ret; ret = nbd_aio_notify_read (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_NOTIFY_READ missing_function (err, "aio_notify_read"); return -1; #endif } int _nbd_aio_notify_write_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_NOTIFY_WRITE int ret; ret = nbd_aio_notify_write (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_NOTIFY_WRITE missing_function (err, "aio_notify_write"); return -1; #endif } int _nbd_aio_is_created_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_IS_CREATED int ret; ret = nbd_aio_is_created (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_IS_CREATED missing_function (err, "aio_is_created"); return -1; #endif } int _nbd_aio_is_connecting_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_IS_CONNECTING int ret; ret = nbd_aio_is_connecting (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_IS_CONNECTING missing_function (err, "aio_is_connecting"); return -1; #endif } int _nbd_aio_is_negotiating_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_IS_NEGOTIATING int ret; ret = nbd_aio_is_negotiating (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_IS_NEGOTIATING missing_function (err, "aio_is_negotiating"); return -1; #endif } int _nbd_aio_is_ready_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_IS_READY int ret; ret = nbd_aio_is_ready (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_IS_READY missing_function (err, "aio_is_ready"); return -1; #endif } int _nbd_aio_is_processing_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_IS_PROCESSING int ret; ret = nbd_aio_is_processing (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_IS_PROCESSING missing_function (err, "aio_is_processing"); return -1; #endif } int _nbd_aio_is_dead_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_IS_DEAD int ret; ret = nbd_aio_is_dead (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_IS_DEAD missing_function (err, "aio_is_dead"); return -1; #endif } int _nbd_aio_is_closed_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_IS_CLOSED int ret; ret = nbd_aio_is_closed (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_IS_CLOSED missing_function (err, "aio_is_closed"); return -1; #endif } int _nbd_aio_command_completed_wrapper (struct error *err, struct nbd_handle *h, uint64_t cookie) { #ifdef LIBNBD_HAVE_NBD_AIO_COMMAND_COMPLETED int ret; ret = nbd_aio_command_completed (h, cookie); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_COMMAND_COMPLETED missing_function (err, "aio_command_completed"); return -1; #endif } int64_t _nbd_aio_peek_command_completed_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_PEEK_COMMAND_COMPLETED int64_t ret; ret = nbd_aio_peek_command_completed (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_PEEK_COMMAND_COMPLETED missing_function (err, "aio_peek_command_completed"); return -1; #endif } int _nbd_aio_in_flight_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_AIO_IN_FLIGHT int ret; ret = nbd_aio_in_flight (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_AIO_IN_FLIGHT missing_function (err, "aio_in_flight"); return -1; #endif } const char * _nbd_connection_state_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_CONNECTION_STATE const char * ret; ret = nbd_connection_state (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_CONNECTION_STATE missing_function (err, "connection_state"); return NULL; #endif } const char * _nbd_get_package_name_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_PACKAGE_NAME const char * ret; ret = nbd_get_package_name (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_PACKAGE_NAME missing_function (err, "get_package_name"); return NULL; #endif } const char * _nbd_get_version_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_VERSION const char * ret; ret = nbd_get_version (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_VERSION missing_function (err, "get_version"); return NULL; #endif } int _nbd_kill_subprocess_wrapper (struct error *err, struct nbd_handle *h, int signum) { #ifdef LIBNBD_HAVE_NBD_KILL_SUBPROCESS int ret; ret = nbd_kill_subprocess (h, signum); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_KILL_SUBPROCESS missing_function (err, "kill_subprocess"); return -1; #endif } int _nbd_supports_tls_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_SUPPORTS_TLS int ret; ret = nbd_supports_tls (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SUPPORTS_TLS missing_function (err, "supports_tls"); return -1; #endif } int _nbd_supports_vsock_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_SUPPORTS_VSOCK int ret; ret = nbd_supports_vsock (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SUPPORTS_VSOCK missing_function (err, "supports_vsock"); return -1; #endif } int _nbd_supports_uri_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_SUPPORTS_URI int ret; ret = nbd_supports_uri (h); if (ret == -1) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_SUPPORTS_URI missing_function (err, "supports_uri"); return -1; #endif } char * _nbd_get_uri_wrapper (struct error *err, struct nbd_handle *h) { #ifdef LIBNBD_HAVE_NBD_GET_URI char * ret; ret = nbd_get_uri (h); if (ret == NULL) save_error (err); return ret; #else // !LIBNBD_HAVE_NBD_GET_URI missing_function (err, "get_uri"); return NULL; #endif } int _nbd_chunk_callback_wrapper (void *user_data, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error) { return chunk_callback ((long)user_data, subbuf, count, offset, status, error); } void _nbd_chunk_callback_free (void *user_data) { long *p = user_data; extern void freeCallbackId (long); freeCallbackId (*p); free (p); } int _nbd_completion_callback_wrapper (void *user_data, int *error) { return completion_callback ((long)user_data, error); } void _nbd_completion_callback_free (void *user_data) { long *p = user_data; extern void freeCallbackId (long); freeCallbackId (*p); free (p); } int _nbd_debug_callback_wrapper (void *user_data, const char *context, const char *msg) { return debug_callback ((long)user_data, context, msg); } void _nbd_debug_callback_free (void *user_data) { long *p = user_data; extern void freeCallbackId (long); freeCallbackId (*p); free (p); } int _nbd_extent_callback_wrapper (void *user_data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error) { return extent_callback ((long)user_data, metacontext, offset, entries, nr_entries, error); } void _nbd_extent_callback_free (void *user_data) { long *p = user_data; extern void freeCallbackId (long); freeCallbackId (*p); free (p); } int _nbd_extent64_callback_wrapper (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { return extent64_callback ((long)user_data, metacontext, offset, entries, nr_entries, error); } void _nbd_extent64_callback_free (void *user_data) { long *p = user_data; extern void freeCallbackId (long); freeCallbackId (*p); free (p); } int _nbd_list_callback_wrapper (void *user_data, const char *name, const char *description) { return list_callback ((long)user_data, name, description); } void _nbd_list_callback_free (void *user_data) { long *p = user_data; extern void freeCallbackId (long); freeCallbackId (*p); free (p); } int _nbd_context_callback_wrapper (void *user_data, const char *name) { return context_callback ((long)user_data, name); } void _nbd_context_callback_free (void *user_data) { long *p = user_data; extern void freeCallbackId (long); freeCallbackId (*p); free (p); } // There must be no blank line between end comment and import! // https://github.com/golang/go/issues/9733 */ import "C" libnbd-1.20.3/golang/wrappers.h0000444000175000017500000005053114603303752012000 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBNBD_GOLANG_WRAPPERS_H #define LIBNBD_GOLANG_WRAPPERS_H #include #include #include #include #include "libnbd.h" /* When calling callbacks we pass the callback ID (a golang int / * C.long) in the void *user_data field. We need to create a block * to store the callback number. This must be freed by C.free(vp) */ static inline void * alloc_cbid (long i) { long *p = malloc (sizeof (long)); assert (p != NULL); *p = i; return p; } /* save_error is called from the same thread to make a copy * of the error which can later be retrieve from golang code * possibly running in a different thread. */ struct error { char *error; int errnum; }; static inline void save_error (struct error *err) { err->error = strdup (nbd_get_error ()); err->errnum = nbd_get_errno (); } static inline void free_error (struct error *err) { free (err->error); } /* If you mix old C library and new bindings then some C * functions may not be defined. They return ENOTSUP. */ static inline void missing_function (struct error *err, const char *fn) { asprintf (&err->error, "%s: " "function missing because golang bindings were compiled " "against an old version of the C library", fn); err->errnum = ENOTSUP; } int _nbd_set_debug_wrapper (struct error *err, struct nbd_handle *h, bool debug); int _nbd_get_debug_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_debug_callback_wrapper (struct error *err, struct nbd_handle *h, nbd_debug_callback debug_callback); int _nbd_clear_debug_callback_wrapper (struct error *err, struct nbd_handle *h); uint64_t _nbd_stats_bytes_sent_wrapper (struct error *err, struct nbd_handle *h); uint64_t _nbd_stats_chunks_sent_wrapper (struct error *err, struct nbd_handle *h); uint64_t _nbd_stats_bytes_received_wrapper (struct error *err, struct nbd_handle *h); uint64_t _nbd_stats_chunks_received_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_handle_name_wrapper (struct error *err, struct nbd_handle *h, const char *handle_name); char * _nbd_get_handle_name_wrapper (struct error *err, struct nbd_handle *h); uintptr_t _nbd_set_private_data_wrapper (struct error *err, struct nbd_handle *h, uintptr_t private_data); uintptr_t _nbd_get_private_data_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_export_name_wrapper (struct error *err, struct nbd_handle *h, const char *export_name); char * _nbd_get_export_name_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_request_block_size_wrapper (struct error *err, struct nbd_handle *h, bool request); int _nbd_get_request_block_size_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_full_info_wrapper (struct error *err, struct nbd_handle *h, bool request); int _nbd_get_full_info_wrapper (struct error *err, struct nbd_handle *h); char * _nbd_get_canonical_export_name_wrapper (struct error *err, struct nbd_handle *h); char * _nbd_get_export_description_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_tls_wrapper (struct error *err, struct nbd_handle *h, int tls); int _nbd_get_tls_wrapper (struct error *err, struct nbd_handle *h); int _nbd_get_tls_negotiated_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_tls_certificates_wrapper (struct error *err, struct nbd_handle *h, const char *dir); int _nbd_set_tls_verify_peer_wrapper (struct error *err, struct nbd_handle *h, bool verify); int _nbd_get_tls_verify_peer_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_tls_username_wrapper (struct error *err, struct nbd_handle *h, const char *username); char * _nbd_get_tls_username_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_tls_psk_file_wrapper (struct error *err, struct nbd_handle *h, const char *filename); int _nbd_set_request_extended_headers_wrapper (struct error *err, struct nbd_handle *h, bool request); int _nbd_get_request_extended_headers_wrapper (struct error *err, struct nbd_handle *h); int _nbd_get_extended_headers_negotiated_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_request_structured_replies_wrapper (struct error *err, struct nbd_handle *h, bool request); int _nbd_get_request_structured_replies_wrapper (struct error *err, struct nbd_handle *h); int _nbd_get_structured_replies_negotiated_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_request_meta_context_wrapper (struct error *err, struct nbd_handle *h, bool request); int _nbd_get_request_meta_context_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_handshake_flags_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags); uint32_t _nbd_get_handshake_flags_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_pread_initialize_wrapper (struct error *err, struct nbd_handle *h, bool request); int _nbd_get_pread_initialize_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_strict_mode_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags); uint32_t _nbd_get_strict_mode_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_opt_mode_wrapper (struct error *err, struct nbd_handle *h, bool enable); int _nbd_get_opt_mode_wrapper (struct error *err, struct nbd_handle *h); int _nbd_opt_go_wrapper (struct error *err, struct nbd_handle *h); int _nbd_opt_abort_wrapper (struct error *err, struct nbd_handle *h); int _nbd_opt_starttls_wrapper (struct error *err, struct nbd_handle *h); int _nbd_opt_extended_headers_wrapper (struct error *err, struct nbd_handle *h); int _nbd_opt_structured_reply_wrapper (struct error *err, struct nbd_handle *h); int _nbd_opt_list_wrapper (struct error *err, struct nbd_handle *h, nbd_list_callback list_callback); int _nbd_opt_info_wrapper (struct error *err, struct nbd_handle *h); int _nbd_opt_list_meta_context_wrapper (struct error *err, struct nbd_handle *h, nbd_context_callback context_callback); int _nbd_opt_list_meta_context_queries_wrapper (struct error *err, struct nbd_handle *h, char **queries, nbd_context_callback context_callback); int _nbd_opt_set_meta_context_wrapper (struct error *err, struct nbd_handle *h, nbd_context_callback context_callback); int _nbd_opt_set_meta_context_queries_wrapper (struct error *err, struct nbd_handle *h, char **queries, nbd_context_callback context_callback); int _nbd_add_meta_context_wrapper (struct error *err, struct nbd_handle *h, const char *name); ssize_t _nbd_get_nr_meta_contexts_wrapper (struct error *err, struct nbd_handle *h); char * _nbd_get_meta_context_wrapper (struct error *err, struct nbd_handle *h, size_t i); int _nbd_clear_meta_contexts_wrapper (struct error *err, struct nbd_handle *h); int _nbd_set_uri_allow_transports_wrapper (struct error *err, struct nbd_handle *h, uint32_t mask); int _nbd_set_uri_allow_tls_wrapper (struct error *err, struct nbd_handle *h, int tls); int _nbd_set_uri_allow_local_file_wrapper (struct error *err, struct nbd_handle *h, bool allow); int _nbd_connect_uri_wrapper (struct error *err, struct nbd_handle *h, const char *uri); int _nbd_connect_unix_wrapper (struct error *err, struct nbd_handle *h, const char *unixsocket); int _nbd_connect_vsock_wrapper (struct error *err, struct nbd_handle *h, uint32_t cid, uint32_t port); int _nbd_connect_tcp_wrapper (struct error *err, struct nbd_handle *h, const char *hostname, const char *port); int _nbd_connect_socket_wrapper (struct error *err, struct nbd_handle *h, int sock); int _nbd_connect_command_wrapper (struct error *err, struct nbd_handle *h, char **argv); int _nbd_connect_systemd_socket_activation_wrapper (struct error *err, struct nbd_handle *h, char **argv); int _nbd_set_socket_activation_name_wrapper (struct error *err, struct nbd_handle *h, const char *socket_name); char * _nbd_get_socket_activation_name_wrapper (struct error *err, struct nbd_handle *h); int _nbd_is_read_only_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_flush_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_fua_wrapper (struct error *err, struct nbd_handle *h); int _nbd_is_rotational_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_trim_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_zero_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_fast_zero_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_block_status_payload_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_df_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_multi_conn_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_cache_wrapper (struct error *err, struct nbd_handle *h); int _nbd_can_meta_context_wrapper (struct error *err, struct nbd_handle *h, const char *metacontext); const char * _nbd_get_protocol_wrapper (struct error *err, struct nbd_handle *h); int64_t _nbd_get_size_wrapper (struct error *err, struct nbd_handle *h); int64_t _nbd_get_block_size_wrapper (struct error *err, struct nbd_handle *h, int size_type); int _nbd_pread_wrapper (struct error *err, struct nbd_handle *h, void *buf, size_t count, uint64_t offset, uint32_t flags); int _nbd_pread_structured_wrapper (struct error *err, struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, uint32_t flags); int _nbd_pwrite_wrapper (struct error *err, struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, uint32_t flags); int _nbd_shutdown_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags); int _nbd_flush_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags); int _nbd_trim_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags); int _nbd_cache_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags); int _nbd_zero_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, uint32_t flags); int _nbd_block_status_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, uint32_t flags); int _nbd_block_status_64_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, uint32_t flags); int _nbd_block_status_filter_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, uint32_t flags); int _nbd_poll_wrapper (struct error *err, struct nbd_handle *h, int timeout); int _nbd_poll2_wrapper (struct error *err, struct nbd_handle *h, int fd, int timeout); int _nbd_aio_connect_wrapper (struct error *err, struct nbd_handle *h, const struct sockaddr *addr, socklen_t addrlen); int _nbd_aio_connect_uri_wrapper (struct error *err, struct nbd_handle *h, const char *uri); int _nbd_aio_connect_unix_wrapper (struct error *err, struct nbd_handle *h, const char *unixsocket); int _nbd_aio_connect_vsock_wrapper (struct error *err, struct nbd_handle *h, uint32_t cid, uint32_t port); int _nbd_aio_connect_tcp_wrapper (struct error *err, struct nbd_handle *h, const char *hostname, const char *port); int _nbd_aio_connect_socket_wrapper (struct error *err, struct nbd_handle *h, int sock); int _nbd_aio_connect_command_wrapper (struct error *err, struct nbd_handle *h, char **argv); int _nbd_aio_connect_systemd_socket_activation_wrapper (struct error *err, struct nbd_handle *h, char **argv); int _nbd_aio_opt_go_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback); int _nbd_aio_opt_abort_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_opt_starttls_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback); int _nbd_aio_opt_extended_headers_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback); int _nbd_aio_opt_structured_reply_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback); int _nbd_aio_opt_list_wrapper (struct error *err, struct nbd_handle *h, nbd_list_callback list_callback, nbd_completion_callback completion_callback); int _nbd_aio_opt_info_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback); int _nbd_aio_opt_list_meta_context_wrapper (struct error *err, struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback); int _nbd_aio_opt_list_meta_context_queries_wrapper (struct error *err, struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback); int _nbd_aio_opt_set_meta_context_wrapper (struct error *err, struct nbd_handle *h, nbd_context_callback context_callback, nbd_completion_callback completion_callback); int _nbd_aio_opt_set_meta_context_queries_wrapper (struct error *err, struct nbd_handle *h, char **queries, nbd_context_callback context_callback, nbd_completion_callback completion_callback); int64_t _nbd_aio_pread_wrapper (struct error *err, struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags); int64_t _nbd_aio_pread_structured_wrapper (struct error *err, struct nbd_handle *h, void *buf, size_t count, uint64_t offset, nbd_chunk_callback chunk_callback, nbd_completion_callback completion_callback, uint32_t flags); int64_t _nbd_aio_pwrite_wrapper (struct error *err, struct nbd_handle *h, const void *buf, size_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags); int _nbd_aio_disconnect_wrapper (struct error *err, struct nbd_handle *h, uint32_t flags); int64_t _nbd_aio_flush_wrapper (struct error *err, struct nbd_handle *h, nbd_completion_callback completion_callback, uint32_t flags); int64_t _nbd_aio_trim_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags); int64_t _nbd_aio_cache_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags); int64_t _nbd_aio_zero_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_completion_callback completion_callback, uint32_t flags); int64_t _nbd_aio_block_status_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent_callback extent_callback, nbd_completion_callback completion_callback, uint32_t flags); int64_t _nbd_aio_block_status_64_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags); int64_t _nbd_aio_block_status_filter_wrapper (struct error *err, struct nbd_handle *h, uint64_t count, uint64_t offset, char **contexts, nbd_extent64_callback extent64_callback, nbd_completion_callback completion_callback, uint32_t flags); int _nbd_aio_get_fd_wrapper (struct error *err, struct nbd_handle *h); unsigned _nbd_aio_get_direction_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_notify_read_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_notify_write_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_is_created_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_is_connecting_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_is_negotiating_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_is_ready_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_is_processing_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_is_dead_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_is_closed_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_command_completed_wrapper (struct error *err, struct nbd_handle *h, uint64_t cookie); int64_t _nbd_aio_peek_command_completed_wrapper (struct error *err, struct nbd_handle *h); int _nbd_aio_in_flight_wrapper (struct error *err, struct nbd_handle *h); const char * _nbd_connection_state_wrapper (struct error *err, struct nbd_handle *h); const char * _nbd_get_package_name_wrapper (struct error *err, struct nbd_handle *h); const char * _nbd_get_version_wrapper (struct error *err, struct nbd_handle *h); int _nbd_kill_subprocess_wrapper (struct error *err, struct nbd_handle *h, int signum); int _nbd_supports_tls_wrapper (struct error *err, struct nbd_handle *h); int _nbd_supports_vsock_wrapper (struct error *err, struct nbd_handle *h); int _nbd_supports_uri_wrapper (struct error *err, struct nbd_handle *h); char * _nbd_get_uri_wrapper (struct error *err, struct nbd_handle *h); extern int chunk_callback (); int _nbd_chunk_callback_wrapper (void *user_data, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error); void _nbd_chunk_callback_free (void *user_data); extern int completion_callback (); int _nbd_completion_callback_wrapper (void *user_data, int *error); void _nbd_completion_callback_free (void *user_data); extern int debug_callback (); int _nbd_debug_callback_wrapper (void *user_data, const char *context, const char *msg); void _nbd_debug_callback_free (void *user_data); extern int extent_callback (); int _nbd_extent_callback_wrapper (void *user_data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error); void _nbd_extent_callback_free (void *user_data); extern int extent64_callback (); int _nbd_extent64_callback_wrapper (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error); void _nbd_extent64_callback_free (void *user_data); extern int list_callback (); int _nbd_list_callback_wrapper (void *user_data, const char *name, const char *description); void _nbd_list_callback_free (void *user_data); extern int context_callback (); int _nbd_context_callback_wrapper (void *user_data, const char *name); void _nbd_context_callback_free (void *user_data); #endif /* LIBNBD_GOLANG_WRAPPERS_H */ libnbd-1.20.3/golang/.gitignore0000644000175000017500000000006314525371754011763 /bindings.go /closures.go /wrappers.go /wrappers.h libnbd-1.20.3/golang/LICENSE0000644000175000017500000006364214525371754011014 GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 Copyright (C) 1991, 1999 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. 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Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the library `Frob' (a library for tweaking knobs) written by James Random Hacker. , 1 April 1990 Ty Coon, President of Vice That's all there is to it! libnbd-1.20.3/golang/aio_buffer.go0000644000175000017500000000544414525371754012433 /* libnbd golang AIO buffer. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd /* #cgo pkg-config: libnbd #cgo CFLAGS: -D_GNU_SOURCE=1 #include #include #include "libnbd.h" #include "wrappers.h" */ import "C" import "unsafe" /* Asynchronous I/O buffer. */ type AioBuffer struct { P unsafe.Pointer Size uint } // MakeAioBuffer makes a new buffer backed by an uninitialized C allocated // array. func MakeAioBuffer(size uint) AioBuffer { return AioBuffer{C.malloc(C.ulong(size)), size} } // MakeAioBuffer makes a new buffer backed by a C allocated array. The // underlying buffer is set to zero. func MakeAioBufferZero(size uint) AioBuffer { return AioBuffer{C.calloc(C.ulong(1), C.ulong(size)), size} } // FromBytes makes a new buffer backed by a C allocated array, initialized by // copying the given Go slice. func FromBytes(buf []byte) AioBuffer { ret := MakeAioBuffer(uint(len(buf))) copy(ret.Slice(), buf) return ret } // Free deallocates the underlying C allocated array. Using the buffer after // Free() will panic. func (b *AioBuffer) Free() { if b.P != nil { C.free(b.P) b.P = nil } } // Bytes copies the underlying C array to Go allocated memory and return a // slice. Modifying the returned slice does not modify the underlying buffer // backing array. func (b *AioBuffer) Bytes() []byte { if b.P == nil { panic("Using AioBuffer after Free()") } return C.GoBytes(b.P, C.int(b.Size)) } // Slice creates a slice backed by the underlying C array. The slice can be // used to access or modify the contents of the underlying array. The slice // must not be used after caling Free(). func (b *AioBuffer) Slice() []byte { if b.P == nil { panic("Using AioBuffer after Free()") } return unsafe.Slice((*byte)(b.P), b.Size) } // Get returns a pointer to a byte in the underlying C array. The pointer can // be used to modify the underlying array. The pointer must not be used after // calling Free(). func (b *AioBuffer) Get(i uint) *byte { if b.P == nil { panic("Using AioBuffer after Free()") } return (*byte)(unsafe.Pointer(uintptr(b.P) + uintptr(i))) } libnbd-1.20.3/golang/callbacks.go0000644000175000017500000000711714525371754012250 /* * This file is part of the libvirt-go project * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * Copyright (c) 2013 Alex Zorin * Copyright Red Hat * */ package libnbd // Helpers functions to register a Go callback function to a C // function. For a simple example, look at how SetErrorFunc works in // error.go. // // - Create a struct that will contain at least the Go callback to // invoke (errorContext). // // - Create an exported Golang function whose job will be to retrieve // the context and execute the callback in it // (connErrCallback). Such a function should receive a callback ID // and will use it to retrive the context. // // - Create a CGO function similar to the above function but with the // appropriate signature to be registered as a callback in C code // (connErrCallbackHelper). Notably, it will have a void* argument // that should be cast to long to retrieve the callback ID. It // should be just a thin wrapper to transform the opaque argument to // a callback ID. // // - Create a CGO function which will be a wrapper around the C // function to register the callback (virConnSetErrorFuncWrapper). Its // only role is to transform a callback ID (long) to an opaque (void*) // and call the C function. // // - When setting up a callback (SetErrorFunc), register the struct from first step // with registerCallbackId and invoke the CGO function from the // previous step with the appropriate ID. // // - When unregistering the callback, don't forget to call freecallbackId. // // If you need to associate some additional data with the connection, // look at saveConnectionData, getConnectionData and // releaseConnectionData. import "C" import ( "sync" ) const firstGoCallbackId int = 100 // help catch some additional errors during test var goCallbackLock sync.RWMutex var goCallbacks = make(map[int]interface{}) var nextGoCallbackId int = firstGoCallbackId //export freeCallbackId func freeCallbackId(goCallbackId int) { goCallbackLock.Lock() delete(goCallbacks, goCallbackId) goCallbackLock.Unlock() } func getCallbackId(goCallbackId int) interface{} { goCallbackLock.RLock() ctx := goCallbacks[goCallbackId] goCallbackLock.RUnlock() if ctx == nil { // If this happens there must be a bug in libvirt panic("Callback arrived after freeCallbackId was called") } return ctx } func registerCallbackId(ctx interface{}) int { goCallbackLock.Lock() goCallBackId := nextGoCallbackId nextGoCallbackId++ for goCallbacks[nextGoCallbackId] != nil { nextGoCallbackId++ } goCallbacks[goCallBackId] = ctx goCallbackLock.Unlock() return goCallBackId } libnbd-1.20.3/golang/go.mod0000644000175000017500000000007314525371754011102 module libguestfs.org/libnbd // For unsafe.Slice. go 1.17 libnbd-1.20.3/golang/handle.go0000644000175000017500000000634014525371754011561 /* libnbd golang handle. * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd /* #cgo pkg-config: libnbd #cgo CFLAGS: -D_GNU_SOURCE=1 #include #include #include "libnbd.h" #include "wrappers.h" static struct nbd_handle * _nbd_create_wrapper (struct error *err) { struct nbd_handle *ret; ret = nbd_create (); if (ret == NULL) save_error (err); return ret; } */ import "C" import ( "fmt" "runtime" "syscall" "unsafe" ) /* Handle. */ type Libnbd struct { h *C.struct_nbd_handle } /* Convert handle to string (just for debugging). */ func (h *Libnbd) String() string { return "&Libnbd{}" } /* Used for block status callback. */ type LibnbdExtent struct { Length uint64 // length of the extent Flags uint64 // flags describing properties of the extent } /* All functions (except Close) return ([result,] LibnbdError). */ type LibnbdError struct { Op string // operation which failed Errmsg string // string (nbd_get_error) Errno syscall.Errno // errno (nbd_get_errno) } func (e *LibnbdError) String() string { if e.Errno != 0 { return fmt.Sprintf("%s: %s", e.Op, e.Errmsg) } else { return fmt.Sprintf("%s: %s: %s", e.Op, e.Errmsg, e.Errno) } } /* Implement the error interface */ func (e *LibnbdError) Error() string { return e.String() } func get_error(op string, c_err C.struct_error) *LibnbdError { errmsg := C.GoString(c_err.error) errno := syscall.Errno(c_err.errnum) return &LibnbdError{Op: op, Errmsg: errmsg, Errno: errno} } func closed_handle_error(op string) *LibnbdError { return &LibnbdError{Op: op, Errmsg: "handle is closed", Errno: syscall.Errno(0)} } /* Create a new handle. */ func Create() (*Libnbd, error) { var c_err C.struct_error c_h := C._nbd_create_wrapper(&c_err) if c_h == nil { err := get_error("create", c_err) C.free_error(&c_err) return nil, err } h := &Libnbd{h: c_h} // Finalizers aren't guaranteed to run, but try having one anyway ... runtime.SetFinalizer(h, (*Libnbd).Close) return h, nil } /* Close the handle. */ func (h *Libnbd) Close() *LibnbdError { if h.h == nil { return closed_handle_error("close") } C.nbd_close(h.h) h.h = nil return nil } /* Functions for translating between NULL-terminated lists of * C strings and golang []string. */ func arg_string_list(xs []string) []*C.char { r := make([]*C.char, 1+len(xs)) for i, x := range xs { r[i] = C.CString(x) } r[len(xs)] = nil return r } func free_string_list(argv []*C.char) { for i := 0; argv[i] != nil; i++ { C.free(unsafe.Pointer(argv[i])) } } libnbd-1.20.3/golang/libnbd-golang.pod0000644000175000017500000000224014525371754013175 =head1 NAME libnbd-golang - how to use libnbd from Go =head1 SYNOPSIS import "libguestfs.org/libnbd" h, err := libnbd.Create() if err != nil { panic(err) } defer h.Close() uri := "nbd://localhost" err = h.ConnectUri(uri) if err != nil { panic(err) } size, err := h.GetSize() if err != nil { panic(err) } fmt.Printf("size of %s = %d\n", uri, size) =head1 DESCRIPTION This manual page documents how to use libnbd to access Network Block Device (NBD) servers from the Go programming language. The Go bindings work very similarly to the C bindings so you should start by reading L. =head1 HANDLES Create a libnbd handle of type C by calling C. You can either close the handle explicitly by a deferred call to C or it will be closed automatically when it is garbage collected. =head1 ERRORS Most calls return either a single C or a pair C<(ret, LibnbdError)>. =head1 EXAMPLES This directory contains examples written in Go: L =head1 SEE ALSO L. =head1 AUTHORS Richard W.M. Jones =head1 COPYRIGHT Copyright Red Hat libnbd-1.20.3/golang/libnbd_010_load_test.go0000644000175000017500000000163014525371754014173 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" func Test010Load(t *testing.T) { /* Nothing - just test that the library can be linked to. */ } libnbd-1.20.3/golang/libnbd_020_aio_buffer_test.go0000644000175000017500000001237714525371754015370 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import ( "bytes" "testing" ) func TestAioBuffer(t *testing.T) { /* Create a buffer with uninitialized backing array. */ buf := MakeAioBuffer(uint(32)) defer buf.Free() /* Initialize backing array contents. */ s := buf.Slice() for i := uint(0); i < buf.Size; i++ { s[i] = 0 } /* Create a slice by copying the backing array contents into Go memory. */ b := buf.Bytes() zeroes := make([]byte, 32) if !bytes.Equal(b, zeroes) { t.Fatalf("Expected %v, got %v", zeroes, buf.Bytes()) } /* Modifying returned slice does not modify the buffer. */ for i := 0; i < len(b); i++ { b[i] = 42 } /* Bytes() still returns zeroes. */ if !bytes.Equal(buf.Bytes(), zeroes) { t.Fatalf("Expected %v, got %v", zeroes, buf.Bytes()) } /* Creating a slice without copying the underlying buffer. */ s = buf.Slice() if !bytes.Equal(s, zeroes) { t.Fatalf("Expected %v, got %v", zeroes, s) } /* Modifying the slice modifies the underlying buffer. */ for i := 0; i < len(s); i++ { s[i] = 42 } if !bytes.Equal(buf.Slice(), s) { t.Fatalf("Expected %v, got %v", s, buf.Slice()) } /* Create another buffer from Go slice. */ buf2 := FromBytes(zeroes) defer buf2.Free() if !bytes.Equal(buf2.Bytes(), zeroes) { t.Fatalf("Expected %v, got %v", zeroes, buf2.Bytes()) } /* Crated a zeroed buffer. */ buf3 := MakeAioBufferZero(uint(32)) defer buf.Free() if !bytes.Equal(buf3.Bytes(), zeroes) { t.Fatalf("Expected %v, got %v", zeroes, buf2.Bytes()) } } func TestAioBufferFree(t *testing.T) { buf := MakeAioBuffer(uint(32)) /* Free the underlying C array. */ buf.Free() /* And clear the pointer. */ if buf.P != nil { t.Fatal("Dangling pointer after Free()") } /* Additional Free does nothing. */ buf.Free() } func TestAioBufferBytesAfterFree(t *testing.T) { buf := MakeAioBuffer(uint(32)) buf.Free() defer func() { if r := recover(); r == nil { t.Fatal("Did not recover from panic calling Bytes() after Free()") } }() buf.Bytes() } func TestAioBufferSliceAfterFree(t *testing.T) { buf := MakeAioBuffer(uint(32)) buf.Free() defer func() { if r := recover(); r == nil { t.Fatal("Did not recover from panic calling Bytes() after Free()") } }() s := buf.Slice() s[0] = 42 } func TestAioBufferGetAfterFree(t *testing.T) { buf := MakeAioBuffer(uint(32)) buf.Free() defer func() { if r := recover(); r == nil { t.Fatal("Did not recover from panic calling Get() after Free()") } }() *buf.Get(0) = 42 } // Typical buffer size. const bufferSize uint = 256 * 1024 // Benchmark creating an uninitialized buffer. func BenchmarkMakeAioBuffer(b *testing.B) { for i := 0; i < b.N; i++ { buf := MakeAioBuffer(bufferSize) buf.Free() } } // Benchmark creating zeroed buffer. func BenchmarkMakeAioBufferZero(b *testing.B) { for i := 0; i < b.N; i++ { buf := MakeAioBufferZero(bufferSize) buf.Free() } } // Benchmark zeroing a buffer. func BenchmarkAioBufferZero(b *testing.B) { for i := 0; i < b.N; i++ { buf := MakeAioBuffer(bufferSize) s := buf.Slice() for i := uint(0); i < bufferSize; i++ { s[i] = 0 } buf.Free() } } // Benchmark creating a buffer by copying a Go slice. func BenchmarkFromBytes(b *testing.B) { for i := 0; i < b.N; i++ { zeroes := make([]byte, bufferSize) buf := FromBytes(zeroes) buf.Free() } } // Benchmark creating a slice by copying the contents. func BenchmarkAioBufferBytes(b *testing.B) { buf := MakeAioBuffer(bufferSize) defer buf.Free() var r int b.ResetTimer() for i := 0; i < b.N; i++ { r += len(buf.Bytes()) } } // Benchmark creating a slice without copying the underlying buffer. func BenchmarkAioBufferSlice(b *testing.B) { buf := MakeAioBuffer(bufferSize) defer buf.Free() var r int b.ResetTimer() for i := 0; i < b.N; i++ { r += len(buf.Slice()) } } var data = make([]byte, bufferSize) // Benchmark copying into same buffer, used as baseline for CopyMake and // CopyMakeZero benchmarks. func BenchmarkAioBufferCopyBaseline(b *testing.B) { buf := MakeAioBufferZero(bufferSize) defer buf.Free() b.ResetTimer() for i := 0; i < b.N; i++ { copy(buf.Slice(), data) } } // Benchmark overhead of making a new buffer per read. func BenchmarkAioBufferCopyMake(b *testing.B) { for i := 0; i < b.N; i++ { buf := MakeAioBuffer(bufferSize) copy(buf.Slice(), data) buf.Free() } } // Benchmark overhead of making a new zero buffer per read. func BenchmarkAioBufferCopyMakeZero(b *testing.B) { for i := 0; i < b.N; i++ { buf := MakeAioBufferZero(bufferSize) copy(buf.Slice(), data) buf.Free() } } libnbd-1.20.3/golang/libnbd_100_handle_test.go0000644000175000017500000000167614525371754014521 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" func Test100Handle(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } h.Close() } libnbd-1.20.3/golang/libnbd_110_defaults_test.go0000644000175000017500000000527114525371754015071 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" func Test110Defaults(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() name, err := h.GetExportName() if err != nil { t.Fatalf("could not get export name: %s", err) } if *name != "" { t.Fatalf("unexpected export name: %s", *name) } info, err := h.GetFullInfo() if err != nil { t.Fatalf("could not get full info state: %s", err) } if info != false { t.Fatalf("unexpected full info state") } tls, err := h.GetTls() if err != nil { t.Fatalf("could not get tls state: %s", err) } if tls != TLS_DISABLE { t.Fatalf("unexpected tls state") } eh, err := h.GetRequestExtendedHeaders() if err != nil { t.Fatalf("could not get extended headers state: %s", err) } if eh != true { t.Fatalf("unexpected extended headers state") } sr, err := h.GetRequestStructuredReplies() if err != nil { t.Fatalf("could not get structured replies state: %s", err) } if sr != true { t.Fatalf("unexpected structured replies state") } meta, err := h.GetRequestMetaContext() if err != nil { t.Fatalf("could not get meta context state: %s", err) } if meta != true { t.Fatalf("unexpected meta context state") } bs, err := h.GetRequestBlockSize() if err != nil { t.Fatalf("could not get block size state: %s", err) } if bs != true { t.Fatalf("unexpected block size state") } init, err := h.GetPreadInitialize() if err != nil { t.Fatalf("could not get pread initialize state: %s", err) } if init != true { t.Fatalf("unexpected pread initialize state") } flags, err := h.GetHandshakeFlags() if err != nil { t.Fatalf("could not get handshake flags: %s", err) } if flags != HANDSHAKE_FLAG_MASK { t.Fatalf("unexpected handshake flags") } opt, err := h.GetOptMode() if err != nil { t.Fatalf("could not get opt mode state: %s", err) } if opt != false { t.Fatalf("unexpected opt mode state") } } libnbd-1.20.3/golang/libnbd_120_set_non_defaults_test.go0000644000175000017500000001066314525371754016620 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" func Test120SetNonDefaults(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetExportName("name") if err != nil { t.Fatalf("could not set export name: %s", err) } name, err := h.GetExportName() if err != nil { t.Fatalf("could not get export name: %s", err) } if *name != "name" { t.Fatalf("unexpected export name: %s", *name) } err = h.SetFullInfo(true) if err != nil { t.Fatalf("could not set full info state: %s", err) } info, err := h.GetFullInfo() if err != nil { t.Fatalf("could not get full info state: %s", err) } if info != true { t.Fatalf("unexpected full info state") } err = h.SetTls(TLS_REQUIRE + 1) if err == nil { t.Fatalf("expect failure for out-of-range enum") } tls, err := h.GetTls() if err != nil { t.Fatalf("could not get tls state: %s", err) } if tls != TLS_DISABLE { t.Fatalf("unexpected tls state") } support, err := h.SupportsTls() if err != nil { t.Fatalf("could not check if tls is supported: %s", err) } if support { err = h.SetTls(TLS_ALLOW) if err != nil { t.Fatalf("could not set tls state: %s", err) } tls, err = h.GetTls() if err != nil { t.Fatalf("could not get tls state: %s", err) } if tls != TLS_ALLOW { t.Fatalf("unexpected tls state") } } err = h.SetRequestExtendedHeaders(false) if err != nil { t.Fatalf("could not set extended headers state: %s", err) } eh, err := h.GetRequestExtendedHeaders() if err != nil { t.Fatalf("could not get extended headers state: %s", err) } if eh != false { t.Fatalf("unexpected extended headers state") } err = h.SetRequestStructuredReplies(false) if err != nil { t.Fatalf("could not set structured replies state: %s", err) } sr, err := h.GetRequestStructuredReplies() if err != nil { t.Fatalf("could not get structured replies state: %s", err) } if sr != false { t.Fatalf("unexpected structured replies state") } err = h.SetRequestMetaContext(false) if err != nil { t.Fatalf("could not set meta context state: %s", err) } meta, err := h.GetRequestMetaContext() if err != nil { t.Fatalf("could not get meta context state: %s", err) } if meta != false { t.Fatalf("unexpected meta context state") } err = h.SetRequestBlockSize(false) if err != nil { t.Fatalf("could not set block size state: %s", err) } bs, err := h.GetRequestBlockSize() if err != nil { t.Fatalf("could not get block size state: %s", err) } if bs != false { t.Fatalf("unexpected block size state") } err = h.SetPreadInitialize(false) if err != nil { t.Fatalf("could not set pread initialize state: %s", err) } init, err := h.GetPreadInitialize() if err != nil { t.Fatalf("could not get pread initialize state: %s", err) } if init != false { t.Fatalf("unexpected pread initialize state") } err = h.SetHandshakeFlags(HANDSHAKE_FLAG_MASK + 1) if err == nil { t.Fatalf("expect failure for out-of-range flags") } flags, err := h.GetHandshakeFlags() if err != nil { t.Fatalf("could not get handshake flags: %s", err) } if flags != HANDSHAKE_FLAG_MASK { t.Fatalf("unexpected handshake flags") } err = h.SetHandshakeFlags(0) if err != nil { t.Fatalf("could not set handshake flags: %s", err) } flags, err = h.GetHandshakeFlags() if err != nil { t.Fatalf("could not get handshake flags: %s", err) } if flags != 0 { t.Fatalf("unexpected handshake flags") } err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode state: %s", err) } opt, err := h.GetOptMode() if err != nil { t.Fatalf("could not get opt mode state: %s", err) } if opt != true { t.Fatalf("unexpected opt mode state") } } libnbd-1.20.3/golang/libnbd_200_connect_command_test.go0000644000175000017500000000214614525371754016407 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" func Test200ConnectCommand(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "null", }) if err != nil { t.Fatalf("could not connect: %s", err) } } libnbd-1.20.3/golang/libnbd_210_opt_abort_test.go0000644000175000017500000000366414525371754015260 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" func Test210OptAbort(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode: %s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "null", }) if err != nil { t.Fatalf("could not connect: %s", err) } proto, err := h.GetProtocol() if err != nil { t.Fatalf("could not get correct protocol: %s", err) } else if *proto != "newstyle-fixed" { t.Fatalf("wrong protocol detected: %s", *proto) } sr, err := h.GetStructuredRepliesNegotiated() if err != nil { t.Fatalf("could not determine structured replies: %s", err) } else if !sr { t.Fatalf("structured replies not negotiated") } err = h.OptAbort() if err != nil { t.Fatalf("could not abort option mode: %s", err) } closed, err := h.AioIsClosed() if err != nil { t.Fatalf("could not determine state after opt_abort: %s", err) } else if !closed { t.Fatalf("wrong state after opt_abort") } _, err = h.GetSize() if err == nil { t.Fatalf("getting a size should not be possible") } } libnbd-1.20.3/golang/libnbd_220_opt_list_test.go0000644000175000017500000000616314525371754015122 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import ( "fmt" "os" "os/exec" "testing" ) var exports []string func conn(mode int, t *testing.T, body func(*Libnbd)) { srcdir := os.Getenv("abs_top_srcdir") script := srcdir + "/tests/opt-list.sh" h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode: %s", err) } mode_str := fmt.Sprintf("mode=%d", mode) err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script, mode_str, }) if err != nil { t.Fatalf("could not connect: %s", err) } exports = make([]string, 0, 4) body(h) h.OptAbort() } func listf(name string, desc string) int { if desc != "" { panic("expected empty description") } exports = append(exports, name) return 0 } func Test220OptList(t *testing.T) { /* Require new-enough nbdkit */ cmd := exec.Command("/bin/sh", "-c", "nbdkit sh --dump-plugin | grep -q has_list_exports=1") err := cmd.Run() if err != nil { t.Skip("Skipping: nbdkit too old for this test") } /* First pass: server fails NBD_OPT_LIST */ conn(0, t, func(h *Libnbd) { _, err = h.OptList(listf) if err == nil { t.Fatalf("expected error") } if len(exports) != 0 { t.Fatalf("exports should be empty") } }) /* Second pass: server advertises 'a' and 'b' */ conn(1, t, func(h *Libnbd) { count, err := h.OptList(listf) if err != nil { t.Fatalf("could not request opt_list: %s", err) } if count != 2 { t.Fatalf("unexpected count after opt_list") } if len(exports) != 2 || exports[0] != "a" || exports[1] != "b" { t.Fatalf("unexpected exports contents after opt_list") } }) /* Third pass: server advertises empty list */ conn(2, t, func(h *Libnbd) { count, err := h.OptList(listf) if err != nil { t.Fatalf("could not request opt_list: %s", err) } if count != 0 { t.Fatalf("unexpected count after opt_list") } if len(exports) != 0 { t.Fatalf("exports should be empty") } }) /* Final pass: server advertises 'a' */ conn(3, t, func(h *Libnbd) { count, err := h.OptList(listf) if err != nil { t.Fatalf("could not request opt_list: %s", err) } if count != 1 { t.Fatalf("unexpected count after opt_list") } if len(exports) != 1 || exports[0] != "a" { t.Fatalf("unexpected exports contents after opt_list") } }) } libnbd-1.20.3/golang/libnbd_230_opt_info_test.go0000644000175000017500000001641314525371754015102 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import ( "os" "testing" ) func Test230OptInfo(t *testing.T) { srcdir := os.Getenv("abs_top_srcdir") script := srcdir + "/tests/opt-info.sh" h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode: %s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script, }) if err != nil { t.Fatalf("could not connect: %s", err) } err = h.AddMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not add meta context: %s", err) } /* No size, flags, or meta-contexts yet */ _, err = h.GetSize() if err == nil { t.Fatalf("expected error") } _, err = h.IsReadOnly() if err == nil { t.Fatalf("expected error") } _, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err == nil { t.Fatalf("expected error") } /* info with no prior name gets info on "" */ err = h.OptInfo() if err != nil { t.Fatalf("opt_info failed unexpectedly: %s", err) } size, err := h.GetSize() if err != nil { t.Fatalf("size failed unexpectedly: %s", err) } if size != 0 { t.Fatalf("unexpected size") } ro, err := h.IsReadOnly() if err != nil { t.Fatalf("readonly failed unexpectedly: %s", err) } if !ro { t.Fatalf("unexpected readonly") } meta, err := h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("can_meta failed unexpectedly: %s", err) } if !meta { t.Fatalf("unexpected meta context") } /* changing export wipes out prior info */ err = h.SetExportName("b") if err != nil { t.Fatalf("set export name failed unexpectedly: %s", err) } _, err = h.GetSize() if err == nil { t.Fatalf("expected error") } _, err = h.IsReadOnly() if err == nil { t.Fatalf("expected error") } _, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err == nil { t.Fatalf("expected error") } /* info on something not present fails */ err = h.SetExportName("a") if err != nil { t.Fatalf("set export name failed unexpectedly: %s", err) } err = h.OptInfo() if err == nil { t.Fatalf("expected error") } /* info for a different export, with automatic meta_context disabled */ err = h.SetExportName("b") if err != nil { t.Fatalf("set export name failed unexpectedly: %s", err) } err = h.SetRequestMetaContext(false) if err != nil { t.Fatalf("set request meta context failed unexpectedly: %s", err) } err = h.OptInfo() if err != nil { t.Fatalf("opt_info failed unexpectedly: %s", err) } /* idempotent name change is no-op */ err = h.SetExportName("b") if err != nil { t.Fatalf("set export name failed unexpectedly: %s", err) } size, err = h.GetSize() if err != nil { t.Fatalf("size failed unexpectedly: %s", err) } if size != 1 { t.Fatalf("unexpected size") } ro, err = h.IsReadOnly() if err != nil { t.Fatalf("readonly failed unexpectedly: %s", err) } if ro { t.Fatalf("unexpected readonly") } _, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err == nil { t.Fatalf("expected error") } err = h.SetRequestMetaContext(true) if err != nil { t.Fatalf("set request meta context failed unexpectedly: %s", err) } /* go on something not present */ err = h.SetExportName("a") if err != nil { t.Fatalf("set export name failed unexpectedly: %s", err) } err = h.OptGo() if err == nil { t.Fatalf("expected error") } _, err = h.GetSize() if err == nil { t.Fatalf("expected error") } _, err = h.IsReadOnly() if err == nil { t.Fatalf("expected error") } _, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err == nil { t.Fatalf("expected error") } /* go on a valid export */ err = h.SetExportName("good") if err != nil { t.Fatalf("set export name failed unexpectedly: %s", err) } err = h.OptGo() if err != nil { t.Fatalf("opt_go failed unexpectedly: %s", err) } size, err = h.GetSize() if err != nil { t.Fatalf("size failed unexpectedly: %s", err) } if size != 4 { t.Fatalf("unexpected size") } ro, err = h.IsReadOnly() if err != nil { t.Fatalf("readonly failed unexpectedly: %s", err) } if !ro { t.Fatalf("unexpected readonly") } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("can_meta failed unexpectedly: %s", err) } if !meta { t.Fatalf("unexpected meta context") } /* now info is no longer valid, but does not wipe data */ err = h.SetExportName("a") if err == nil { t.Fatalf("expected error") } name, err := h.GetExportName() if err != nil { t.Fatalf("get export name failed unexpectedly: %s", err) } if *name != "good" { t.Fatalf("wrong name returned") } err = h.OptInfo() if err == nil { t.Fatalf("expected error") } size, err = h.GetSize() if err != nil { t.Fatalf("size failed unexpectedly: %s", err) } if size != 4 { t.Fatalf("unexpected size") } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("can_meta failed unexpectedly: %s", err) } if !meta { t.Fatalf("unexpected meta context") } h.Shutdown(nil) /* Another cnonection. This time, check that SET_META triggered by OptInfo * persists through OptGo with SetRequestMetaContext disabled. */ h, err = Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode: %s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script, }) if err != nil { t.Fatalf("could not connect: %s", err) } err = h.AddMetaContext("x-unexpected:bogus") if err != nil { t.Fatalf("could not add meta context: %s", err) } _, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err == nil { t.Fatalf("expected error") } err = h.OptInfo() if err != nil { t.Fatalf("opt_info failed unexpectedly: %s", err) } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("can_meta failed unexpectedly: %s", err) } if meta { t.Fatalf("unexpected meta context") } err = h.SetRequestMetaContext(false) if err != nil { t.Fatalf("set request meta context failed unexpectedly: %s", err) } /* Adding to the request list now won't matter */ err = h.AddMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not add meta context: %s", err) } err = h.OptGo() if err != nil { t.Fatalf("opt_go failed unexpectedly: %s", err) } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("can_meta failed unexpectedly: %s", err) } if meta { t.Fatalf("unexpected meta context") } h.Shutdown(nil) } libnbd-1.20.3/golang/libnbd_240_opt_list_meta_test.go0000644000175000017500000001644714525371754016140 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import ( "fmt" "testing" ) var list_count uint var list_seen bool func listmetaf(user_data int, name string) int { if user_data != 42 { panic("expected user_data == 42") } list_count++ if name == CONTEXT_BASE_ALLOCATION { list_seen = true } return 0 } func Test240OptListMeta(t *testing.T) { /* Get into negotiating state. */ h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode: %s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", }) if err != nil { t.Fatalf("could not connect: %s", err) } /* First pass: empty query should give at least "base:allocation". */ list_count = 0 list_seen = false r, err := h.OptListMetaContext(func(name string) int { return listmetaf(42, name) }) if err != nil { t.Fatalf("could not request opt_list_meta_context: %s", err) } if r != list_count || r < 1 || !list_seen { t.Fatalf("unexpected count after opt_list_meta_context") } max := list_count /* Second pass: bogus query has no response. */ list_count = 0 list_seen = false err = h.AddMetaContext("x-nosuch:") if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } r, err = h.OptListMetaContext(func(name string) int { return listmetaf(42, name) }) if err != nil { t.Fatalf("could not request opt_list_meta_context: %s", err) } if r != 0 || r != list_count || list_seen { t.Fatalf("unexpected count after opt_list_meta_context") } /* Third pass: specific query should have one match. */ list_count = 0 list_seen = false err = h.AddMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } r, err = h.GetNrMetaContexts() if err != nil { t.Fatalf("could not request get_nr_meta_contexts: %s", err) } if r != 2 { t.Fatalf("wrong number of meta_contexts: %d", r) } tmp, err := h.GetMetaContext(1) if err != nil { t.Fatalf("could not request get_meta_context: %s", err) } if *tmp != CONTEXT_BASE_ALLOCATION { t.Fatalf("wrong result of get_meta_context: %s", *tmp) } r, err = h.OptListMetaContext(func(name string) int { return listmetaf(42, name) }) if err != nil { t.Fatalf("could not request opt_list_meta_context: %s", err) } if r != 1 || r != list_count || !list_seen { t.Fatalf("unexpected count after opt_list_meta_context") } /* Fourth pass: opt_list_meta_context is stateless, so it should * not wipe status learned during opt_info */ list_count = 0 list_seen = false _, err = h.GetSize() if err == nil { t.Fatalf("expected error") } _, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err == nil { t.Fatalf("expected error") } err = h.OptInfo() if err != nil { t.Fatalf("opt_info failed unexpectedly: %s", err) } size, err := h.GetSize() if err != nil { t.Fatalf("get_size failed unexpectedly: %s", err) } if size != 1048576 { t.Fatalf("get_size gave wrong size") } meta, err := h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("can_meta_context failed unexpectedly: %s", err) } if !meta { t.Fatalf("unexpected count after can_meta_context") } err = h.ClearMetaContexts() if err != nil { t.Fatalf("could not request clear_meta_contexts: %s", err) } err = h.AddMetaContext("x-nosuch:") if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } r, err = h.OptListMetaContext(func(name string) int { return listmetaf(42, name) }) if err != nil { t.Fatalf("could not request opt_list_meta_context: %s", err) } if r != 0 || r != list_count || list_seen { t.Fatalf("unexpected count after opt_list_meta_context") } size, err = h.GetSize() if err != nil { t.Fatalf("get_size failed unexpectedly: %s", err) } if size != 1048576 { t.Fatalf("get_size gave wrong size") } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("can_meta_context failed unexpectedly: %s", err) } if !meta { t.Fatalf("unexpected count after can_meta_context") } err = h.ClearMetaContexts() /* Final pass: "base:" query should get at least "base:allocation" */ list_count = 0 list_seen = false err = h.AddMetaContext(NAMESPACE_BASE) if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } r, err = h.OptListMetaContext(func(name string) int { return listmetaf(42, name) }) if err != nil { t.Fatalf("could not request opt_list_meta_context: %s", err) } if r < 1 || r > max || r != list_count || !list_seen { t.Fatalf("unexpected count after opt_list_meta_context") } err = h.OptAbort() if err != nil { t.Fatalf("could not request opt_abort: %s", err) } /* Repeat but this time without structured replies. Deal gracefully * with older servers that don't allow the attempt. */ h, err = Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode: %s", err) } err = h.SetRequestStructuredReplies(false) if err != nil { t.Fatalf("could not set request structured replies: %s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", }) if err != nil { t.Fatalf("could not connect: %s", err) } bytes, err := h.StatsBytesSent() if err != nil { t.Fatalf("could not collect stats: %s", err) } list_count = 0 list_seen = false r, err = h.OptListMetaContext(func(name string) int { return listmetaf(42, name) }) if err != nil { bytes2, err2 := h.StatsBytesSent() if err2 != nil { t.Fatalf("could not collect stats: %s", err2) } if bytes2 <= bytes { t.Fatalf("unexpected bytes sent after opt_list_meta_context") } fmt.Printf("ignoring failure from old server: %s", err) } else if r < 1 || r != list_count || !list_seen { t.Fatalf("unexpected count after opt_list_meta_context") } /* Now enable structured replies, and a retry should pass. */ sr, err := h.OptStructuredReply() if err != nil { t.Fatalf("could not request opt_structured_reply: %s", err) } if !sr { t.Fatalf("structured replies not enabled: %s", err) } list_count = 0 list_seen = false r, err = h.OptListMetaContext(func(name string) int { return listmetaf(42, name) }) if err != nil { t.Fatalf("could not request opt_list_meta_context: %s", err) } if r < 1 || r != list_count || !list_seen { t.Fatalf("unexpected count after opt_list_meta_context") } err = h.OptAbort() if err != nil { t.Fatalf("could not request opt_abort: %s", err) } } libnbd-1.20.3/golang/libnbd_245_opt_list_meta_queries_test.go0000644000175000017500000000620114525371754017665 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" var listq_count uint var listq_seen bool func listmetaqf(user_data int, name string) int { if user_data != 42 { panic("expected user_data == 42") } listq_count++ if name == CONTEXT_BASE_ALLOCATION { listq_seen = true } return 0 } func Test245OptListMetaQueries(t *testing.T) { /* Get into negotiating state. */ h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode: %s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", }) if err != nil { t.Fatalf("could not connect: %s", err) } /* First pass: empty query should give at least "base:allocation". * The explicit query overrides a non-empty nbd_add_meta_context. */ listq_count = 0 listq_seen = false err = h.AddMetaContext("x-nosuch:") if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } r, err := h.OptListMetaContextQueries([]string{}, func(name string) int { return listmetaqf(42, name) }) if err != nil { t.Fatalf("could not request opt_list_meta_context_queries: %s", err) } if r != listq_count || r < 1 || !listq_seen { t.Fatalf("unexpected count after opt_list_meta_context_queries") } /* Second pass: bogus query has no response. */ listq_count = 0 listq_seen = false err = h.ClearMetaContexts() if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } r, err = h.OptListMetaContextQueries([]string{"x-nosuch:"}, func(name string) int { return listmetaqf(42, name) }) if err != nil { t.Fatalf("could not request opt_list_meta_context_queries: %s", err) } if r != 0 || r != listq_count || listq_seen { t.Fatalf("unexpected count after opt_list_meta_context_queries") } /* Third pass: specific query should have one match. */ listq_count = 0 listq_seen = false r, err = h.OptListMetaContextQueries([]string{ "x-nosuch:", CONTEXT_BASE_ALLOCATION}, func(name string) int { return listmetaqf(42, name) }) if err != nil { t.Fatalf("could not request opt_list_meta_context_queries: %s", err) } if r != 1 || r != listq_count || !listq_seen { t.Fatalf("unexpected count after opt_list_meta_context_queries") } err = h.OptAbort() if err != nil { t.Fatalf("could not request opt_abort: %s", err) } } libnbd-1.20.3/golang/libnbd_250_opt_set_meta_test.go0000644000175000017500000001464514525371754015757 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" var set_count uint var set_seen bool func setmetaf(user_data int, name string) int { if user_data != 42 { panic("expected user_data == 42") } set_count++ if name == CONTEXT_BASE_ALLOCATION { set_seen = true } return 0 } func Test250OptSetMeta(t *testing.T) { /* Get into negotiating state without structured replies. */ h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode: %s", err) } err = h.SetRequestStructuredReplies(false) if err != nil { t.Fatalf("could not set opt mode: %s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", }) if err != nil { t.Fatalf("could not connect: %s", err) } /* No contexts negotiated yet; CanMeta should be error if any requested */ sr, err := h.GetStructuredRepliesNegotiated() if err != nil { t.Fatalf("could not check structured replies negotiated: %s", err) } if sr { t.Fatalf("unexpected structured replies state") } meta, err := h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not check can meta context: %s", err) } if meta { t.Fatalf("unexpected can meta context state") } err = h.AddMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } _, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err == nil { t.Fatalf("expected error") } /* SET cannot succeed until SR is negotiated. */ set_count = 0 set_seen = false _, err = h.OptSetMetaContext(func(name string) int { return setmetaf(42, name) }) if err == nil { t.Fatalf("expected error") } if set_count != 0 || set_seen { t.Fatalf("unexpected set_count after opt_set_meta_context") } sr, err = h.OptStructuredReply() if err != nil { t.Fatalf("could not trigger opt_structured_reply: %s", err) } if !sr { t.Fatalf("unexpected structured replies state") } sr, err = h.GetStructuredRepliesNegotiated() if err != nil { t.Fatalf("could not check structured replies negotiated: %s", err) } if !sr { t.Fatalf("unexpected structured replies state") } _, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err == nil { t.Fatalf("expected error") } /* nbdkit does not match wildcard for SET, even though it does for LIST */ set_count = 0 set_seen = false err = h.ClearMetaContexts() if err != nil { t.Fatalf("could not request clear_meta_contexts: %s", err) } err = h.AddMetaContext("base:") if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } r, err := h.OptSetMetaContext(func(name string) int { return setmetaf(42, name) }) if err != nil { t.Fatalf("could not request opt_set_meta_context: %s", err) } if r != set_count || r != 0 || set_seen { t.Fatalf("unexpected set_count after opt_set_meta_context") } /* Negotiating with no contexts is not an error, but selects nothing */ set_count = 0 set_seen = false err = h.ClearMetaContexts() if err != nil { t.Fatalf("could not request clear_meta_contexts: %s", err) } r, err = h.OptSetMetaContext(func(name string) int { return setmetaf(42, name) }) if err != nil { t.Fatalf("could not request opt_set_meta_context: %s", err) } if r != set_count || r != 0 || set_seen { t.Fatalf("unexpected set_count after opt_set_meta_context") } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not check can meta context: %s", err) } if meta { t.Fatalf("unexpected can meta context state") } /* Request 2 with expectation of 1; with SetRequestMetaContext off */ set_count = 0 set_seen = false err = h.AddMetaContext("x-nosuch:context") if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } err = h.AddMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } err = h.SetRequestMetaContext(false) if err != nil { t.Fatalf("could not set_request_meta_context: %s", err) } r, err = h.OptSetMetaContext(func(name string) int { return setmetaf(42, name) }) if err != nil { t.Fatalf("could not request opt_set_meta_context: %s", err) } if r != 1 || r != set_count || !set_seen { t.Fatalf("unexpected set_count after opt_set_meta_context") } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not check can meta context: %s", err) } if !meta { t.Fatalf("unexpected can meta context state") } /* Transition to transmission phase; our last set should remain active */ err = h.ClearMetaContexts() if err != nil { t.Fatalf("could not request clear_meta_contexts: %s", err) } err = h.AddMetaContext("x-nosuch:context") if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } err = h.OptGo() if err != nil { t.Fatalf("could not request opt_go: %s", err) } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not check can meta context: %s", err) } if !meta { t.Fatalf("unexpected can meta context state") } /* Now too late to set; but should not lose earlier state */ set_count = 0 set_seen = false _, err = h.OptSetMetaContext(func(name string) int { return setmetaf(42, name) }) if err == nil { t.Fatalf("expected error") } if set_count != 0 || set_seen { t.Fatalf("unexpected set_count after opt_set_meta_context") } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not check can meta context: %s", err) } if !meta { t.Fatalf("unexpected can meta context state") } err = h.Shutdown(nil) if err != nil { t.Fatalf("could not request shutdown: %s", err) } } libnbd-1.20.3/golang/libnbd_255_opt_set_meta_queries_test.go0000644000175000017500000000762114525371754017515 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" var setq_count uint var setq_seen bool func setmetaqf(user_data int, name string) int { if user_data != 42 { panic("expected user_data == 42") } setq_count++ if name == CONTEXT_BASE_ALLOCATION { setq_seen = true } return 0 } func Test255OptSetMetaQueries(t *testing.T) { /* Get into negotiating state. */ h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetOptMode(true) if err != nil { t.Fatalf("could not set opt mode: %s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", }) if err != nil { t.Fatalf("could not connect: %s", err) } /* nbdkit does not match wildcard for SET, even though it does for LIST */ setq_count = 0 setq_seen = false r, err := h.OptSetMetaContextQueries([]string{"base:"}, func(name string) int { return setmetaqf(42, name) }) if err != nil { t.Fatalf("could not request opt_set_meta_context_queries: %s", err) } if r != setq_count || r != 0 || setq_seen { t.Fatalf("unexpected count after opt_set_meta_context_queries") } /* Negotiating with no contexts is not an error, but selects nothing. * An explicit empty list overrides a non-empty implicit list. */ setq_count = 0 setq_seen = false err = h.AddMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not request add_meta_context: %s", err) } r, err = h.OptSetMetaContextQueries([]string{}, func(name string) int { return setmetaqf(42, name) }) if err != nil { t.Fatalf("could not request opt_set_meta_context_queries: %s", err) } if r != setq_count || r != 0 || setq_seen { t.Fatalf("unexpected set_count after opt_set_meta_context_queries") } meta, err := h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not check can meta context: %s", err) } if meta { t.Fatalf("unexpected can meta context state") } /* Request 2 with expectation of 1; with SetRequestMetaContext off */ setq_count = 0 setq_seen = false r, err = h.OptSetMetaContextQueries([]string{ "x-nosuch:context", CONTEXT_BASE_ALLOCATION}, func(name string) int { return setmetaqf(42, name) }) if err != nil { t.Fatalf("could not request opt_set_meta_context_queries: %s", err) } if r != 1 || r != setq_count || !setq_seen { t.Fatalf("unexpected set_count after opt_set_meta_context_queries") } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not check can meta context: %s", err) } if !meta { t.Fatalf("unexpected can meta context state") } /* Transition to transmission phase; our last set should remain active */ err = h.SetRequestMetaContext(false) if err != nil { t.Fatalf("could not set_request_meta_context: %s", err) } err = h.OptGo() if err != nil { t.Fatalf("could not request opt_go: %s", err) } meta, err = h.CanMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("could not check can meta context: %s", err) } if !meta { t.Fatalf("unexpected can meta context state") } err = h.Shutdown(nil) if err != nil { t.Fatalf("could not request shutdown: %s", err) } } libnbd-1.20.3/golang/libnbd_300_get_size_test.go0000644000175000017500000000251114525371754015066 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "fmt" import "testing" func Test300GetSize(t *testing.T) { expected := uint64(1048576) h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "null", fmt.Sprintf("size=%d", expected), }) if err != nil { t.Fatalf("could not connect: %s", err) } actual, err := h.GetSize() if err != nil { t.Fatalf("%s", err) } if actual != expected { t.Fatalf("actual %d != expected %d", actual, expected) } } libnbd-1.20.3/golang/libnbd_400_pread_test.go0000644000175000017500000000272414525371754014357 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "bytes" import "encoding/binary" import "testing" func Test400PRead(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "pattern", "size=512", }) if err != nil { t.Fatalf("could not connect: %s", err) } buf := make([]byte, 512) err = h.Pread(buf, 0, nil) if err != nil { t.Fatalf("%s", err) } // Expected data. expected := make([]byte, 512) for i := 0; i < 512; i += 8 { binary.BigEndian.PutUint64(expected[i:i+8], uint64(i)) } if !bytes.Equal(buf, expected) { t.Fatalf("did not read expected data") } } libnbd-1.20.3/golang/libnbd_405_pread_structured_test.go0000644000175000017500000000474714525371754016657 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "bytes" import "encoding/binary" import "fmt" import "testing" var expected405 = make([]byte, 512) func psf(user_data int, buf2 []byte, offset uint64, status uint, error *int) int { if user_data != 42 { panic("expected user_data == 42") } if *error != 0 { panic("expected *error == 0") } if offset != 0 { panic("expected offset == 0") } if status != uint(READ_DATA) { panic("expected status == READ_DATA") } if !bytes.Equal(buf2, expected405) { fmt.Printf("buf2 = %s\nexpected = %s\n", buf2, expected405) panic("expected sub-buffer == expected pattern") } return 0 } func Test405PReadStructured(t *testing.T) { // Expected data. for i := 0; i < 512; i += 8 { binary.BigEndian.PutUint64(expected405[i:i+8], uint64(i)) } h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "pattern", "size=512", }) if err != nil { t.Fatalf("could not connect: %s", err) } buf := make([]byte, 512) err = h.PreadStructured(buf, 0, func(buf2 []byte, offset uint64, status uint, error *int) int { return psf(42, buf2, offset, status, error) }, nil) if err != nil { t.Fatalf("%s", err) } if !bytes.Equal(buf, expected405) { t.Fatalf("did not read expected data") } var optargs PreadStructuredOptargs optargs.FlagsSet = true optargs.Flags = CMD_FLAG_DF wrap := func(buf2 []byte, offset uint64, status uint, error *int) int { return psf(42, buf2, offset, status, error) } err = h.PreadStructured(buf, 0, wrap, &optargs) if err != nil { t.Fatalf("%s", err) } if !bytes.Equal(buf, expected405) { t.Fatalf("did not read expected data") } } libnbd-1.20.3/golang/libnbd_410_pwrite_test.go0000644000175000017500000000300514525371754014570 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "bytes" import "testing" func Test410PWrite(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=512", }) if err != nil { t.Fatalf("could not connect: %s", err) } /* Write a pattern and read it back. */ buf := make([]byte, 512) for i := 0; i < 512; i += 2 { buf[i] = 0x55 buf[i+1] = 0xAA } err = h.Pwrite(buf, 0, nil) if err != nil { t.Fatalf("%s", err) } buf2 := make([]byte, 512) err = h.Pread(buf2, 0, nil) if err != nil { t.Fatalf("%s", err) } if !bytes.Equal(buf, buf2) { t.Fatalf("did not read back same data as written") } } libnbd-1.20.3/golang/libnbd_460_block_status_test.go0000644000175000017500000000521414525371754015764 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import ( "fmt" "os" "strings" "testing" ) var entries []uint32 func mcf(metacontext string, offset uint64, e []uint32, error *int) int { if *error != 0 { panic("expected *error == 0") } if metacontext == CONTEXT_BASE_ALLOCATION { entries = e } return 0 } // Seriously WTF? func mc_compare(a1 []uint32, a2 []uint32) bool { if len(a1) != len(a2) { return false } for i := 0; i < len(a1); i++ { if a1[i] != a2[i] { return false } } return true } // Like, WTF, again? func mc_to_string(a []uint32) string { ss := make([]string, len(a)) for i := 0; i < len(a); i++ { ss[i] = fmt.Sprint(a[i]) } return strings.Join(ss, ", ") } func Test460BlockStatus(t *testing.T) { srcdir := os.Getenv("abs_top_srcdir") script := srcdir + "/tests/meta-base-allocation.sh" h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.AddMetaContext(CONTEXT_BASE_ALLOCATION) if err != nil { t.Fatalf("%s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script, }) if err != nil { t.Fatalf("%s", err) } err = h.BlockStatus(65536, 0, mcf, nil) if err != nil { t.Fatalf("%s", err) } if !mc_compare(entries, []uint32{ 8192, 0, 8192, 1, 16384, 3, 16384, 2, 16384, 0, }) { t.Fatalf("unexpected entries (1): %s", mc_to_string(entries)) } err = h.BlockStatus(1024, 32256, mcf, nil) if err != nil { t.Fatalf("%s", err) } if !mc_compare(entries, []uint32{ 512, 3, 16384, 2, }) { t.Fatalf("unexpected entries (2): %s", mc_to_string(entries)) } var optargs BlockStatusOptargs optargs.FlagsSet = true optargs.Flags = CMD_FLAG_REQ_ONE err = h.BlockStatus(1024, 32256, mcf, &optargs) if err != nil { t.Fatalf("%s", err) } if !mc_compare(entries, []uint32{512, 3}) { t.Fatalf("unexpected entries (3): %s", mc_to_string(entries)) } } libnbd-1.20.3/golang/libnbd_465_block_status_64_test.go0000644000175000017500000000534514525371754016307 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import ( "fmt" "os" "strings" "testing" ) var entries64 []LibnbdExtent func mcf64(metacontext string, offset uint64, e []LibnbdExtent, error *int) int { if *error != 0 { panic("expected *error == 0") } if metacontext == "base:allocation" { entries64 = e } return 0 } // Seriously WTF? func mc64_compare(a1 []LibnbdExtent, a2 []LibnbdExtent) bool { if len(a1) != len(a2) { return false } for i := 0; i < len(a1); i++ { if a1[i] != a2[i] { return false } } return true } func mc64_to_string(a []LibnbdExtent) string { ss := make([]string, len(a)) for i := 0; i < len(a); i++ { ss[i] = fmt.Sprintf("%#v", a[i]) } return strings.Join(ss, ", ") } func Test465BlockStatus64(t *testing.T) { srcdir := os.Getenv("abs_top_srcdir") script := srcdir + "/tests/meta-base-allocation.sh" h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.AddMetaContext("base:allocation") if err != nil { t.Fatalf("%s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script, }) if err != nil { t.Fatalf("%s", err) } err = h.BlockStatus64(65536, 0, mcf64, nil) if err != nil { t.Fatalf("%s", err) } if !mc64_compare(entries64, []LibnbdExtent{ {8192, 0}, {8192, 1}, {16384, 3}, {16384, 2}, {16384, 0}, }) { t.Fatalf("unexpected entries (1): %s", mc64_to_string(entries64)) } err = h.BlockStatus64(1024, 32256, mcf64, nil) if err != nil { t.Fatalf("%s", err) } if !mc64_compare(entries64, []LibnbdExtent{ {512, 3}, {16384, 2}, }) { t.Fatalf("unexpected entries (2): %s", mc64_to_string(entries64)) } var optargs BlockStatus64Optargs optargs.FlagsSet = true optargs.Flags = CMD_FLAG_REQ_ONE err = h.BlockStatus64(1024, 32256, mcf64, &optargs) if err != nil { t.Fatalf("%s", err) } if !mc64_compare(entries64, []LibnbdExtent{{512, 3}}) { t.Fatalf("unexpected entries (3): %s", mc64_to_string(entries64)) } } libnbd-1.20.3/golang/libnbd_500_aio_pread_test.go0000644000175000017500000000324014525371754015202 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "bytes" import "encoding/binary" import "testing" func Test500AioPRead(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "pattern", "size=512", }) if err != nil { t.Fatalf("could not connect: %s", err) } buf := MakeAioBuffer(512) defer buf.Free() var cookie uint64 cookie, err = h.AioPread(buf, 0, nil) if err != nil { t.Fatalf("%s", err) } for { var b bool b, err = h.AioCommandCompleted(cookie) if err != nil { t.Fatalf("%s", err) } if b { break } h.Poll(-1) } // Expected data. expected := make([]byte, 512) for i := 0; i < 512; i += 8 { binary.BigEndian.PutUint64(expected[i:i+8], uint64(i)) } if !bytes.Equal(buf.Slice(), expected) { t.Fatalf("did not read expected data") } } libnbd-1.20.3/golang/libnbd_510_aio_pwrite_test.go0000644000175000017500000000350514525371754015426 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "bytes" import "testing" func Test510AioPWrite(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=512", }) if err != nil { t.Fatalf("could not connect: %s", err) } /* Write a pattern and read it back. */ buf := MakeAioBuffer(512) defer buf.Free() s := buf.Slice() for i := 0; i < 512; i += 2 { s[i] = 0x55 s[i+1] = 0xAA } var cookie uint64 cookie, err = h.AioPwrite(buf, 0, nil) if err != nil { t.Fatalf("%s", err) } for { var b bool b, err = h.AioCommandCompleted(cookie) if err != nil { t.Fatalf("%s", err) } if b { break } h.Poll(-1) } /* We already tested aio_pread, let's just read the data back in the regular synchronous way. */ buf2 := make([]byte, 512) err = h.Pread(buf2, 0, nil) if err != nil { t.Fatalf("%s", err) } if !bytes.Equal(buf.Slice(), buf2) { t.Fatalf("did not read back same data as written") } } libnbd-1.20.3/golang/libnbd_590_aio_copy_test.go0000644000175000017500000001361614525371754015102 //go:build linux // +build linux /* ^ Only test this on Linux. syscall.Select is buggy on BSD because * it doesn't return the number of file descriptors. See: * https://github.com/golang/go/issues/34458 */ /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "fmt" import "syscall" import "testing" var disk_size = uint(512 * 1024 * 1024) var bs = uint64(65536) var max_reads_in_flight = uint(16) var bytes_read = uint(0) var bytes_written = uint(0) /* Functions to handle FdSet. * * XXX These probably only work on 64 bit platforms. */ func fdset_set(set *syscall.FdSet, fd int) { (*set).Bits[fd/64] |= 1 << (uintptr(fd) % 64) } func fdset_test(set *syscall.FdSet, fd int) bool { return (*set).Bits[fd/64]&(1<<(uintptr(fd)%64)) != 0 } /* Functions to test socket direction. */ func dir_is_read(h *Libnbd) bool { dir, _ := h.AioGetDirection() return (uint32(dir) & AIO_DIRECTION_READ) != 0 } func dir_is_write(h *Libnbd) bool { dir, _ := h.AioGetDirection() return (uint32(dir) & AIO_DIRECTION_WRITE) != 0 } /* Queue of writes. */ type wbuf struct { buf AioBuffer offset uint64 } var writes []wbuf /* Called whenever any asynchronous pread command from * the source has completed. */ func read_completed(buf AioBuffer, offset uint64) int { bytes_read += buf.Size /* Move the AIO buffer to the write queue. */ writes = append(writes, wbuf{buf, offset}) /* Returning 1 means the command is automatically retired. */ return 1 } /* Called whenever any asynchronous pwrite command to the * destination has completed. */ func write_completed(buf AioBuffer) int { bytes_written += buf.Size /* Now we have to manually free the AIO buffer. */ buf.Free() /* Returning 1 means the command is automatically retired. */ return 1 } /* Copy between two libnbd handles using aynchronous I/O (AIO). */ func asynch_copy(t *testing.T, src *Libnbd, dst *Libnbd) { size, _ := dst.GetSize() /* This is our reading position in the source. */ soff := uint64(0) for { /* Number of commands in flight on source and dest handles. */ src_in_flight, _ := src.AioInFlight() dst_in_flight, _ := dst.AioInFlight() /* We're finished when we've read everything from the source and there are no commands in flight. */ if soff >= size && src_in_flight == 0 && dst_in_flight == 0 { break } /* If we're able to submit more reads from the source then do it now. */ if soff < size && src_in_flight < max_reads_in_flight { n := bs if n > size-soff { n = size - soff } buf := MakeAioBuffer(uint(n)) soff_copy := soff var optargs AioPreadOptargs optargs.CompletionCallbackSet = true optargs.CompletionCallback = func(error *int) int { if *error != 0 { err := syscall.Errno(*error).Error() panic(err) } return read_completed(buf, soff_copy) } src.AioPread(buf, soff, &optargs) soff += n } /* If there are any write commands waiting to be issued, send them now. */ for _, wb := range writes { var optargs AioPwriteOptargs optargs.CompletionCallbackSet = true optargs.CompletionCallback = func(error *int) int { if *error != 0 { err := syscall.Errno(*error).Error() panic(err) } return write_completed(wb.buf) } dst.AioPwrite(wb.buf, wb.offset, &optargs) } writes = writes[:0] /* Now poll the file descriptors. */ nfd := 1 sfd, err := src.AioGetFd() if err != nil { t.Fatalf("src.AioGetFd: %s", err) } if sfd >= nfd { nfd = sfd + 1 } dfd, err := dst.AioGetFd() if err != nil { t.Fatalf("dst.AioGetFd: %s", err) } if dfd >= nfd { nfd = dfd + 1 } var rfds syscall.FdSet if dir_is_read(src) { fdset_set(&rfds, sfd) } if dir_is_read(dst) { fdset_set(&rfds, dfd) } var wfds syscall.FdSet if dir_is_write(src) { fdset_set(&wfds, sfd) } if dir_is_write(dst) { fdset_set(&wfds, dfd) } for { _, err = syscall.Select(nfd, &rfds, &wfds, nil, nil) if err != syscall.EINTR { break } } if err != nil { t.Fatalf("select: %s", err) } if fdset_test(&rfds, sfd) && dir_is_read(src) { src.AioNotifyRead() } else if fdset_test(&wfds, sfd) && dir_is_write(src) { src.AioNotifyWrite() } else if fdset_test(&rfds, dfd) && dir_is_read(dst) { dst.AioNotifyRead() } else if fdset_test(&wfds, dfd) && dir_is_write(dst) { dst.AioNotifyWrite() } } } func Test590AioCopy(t *testing.T) { src, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer src.Close() src.SetHandleName("src") var dst *Libnbd dst, err = Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer dst.Close() dst.SetHandleName("dst") err = src.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "-r", "pattern", fmt.Sprintf("size=%d", disk_size), }) if err != nil { t.Fatalf("could not connect: %s", err) } err = dst.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "memory", fmt.Sprintf("size=%d", disk_size), }) if err != nil { t.Fatalf("could not connect: %s", err) } asynch_copy(t, src, dst) if bytes_read != disk_size { t.Fatalf("bytes_read != disk_size") } if bytes_written != disk_size { t.Fatalf("bytes_written != disk_size") } } libnbd-1.20.3/golang/libnbd_600_debug_callback_test.go0000644000175000017500000000267114525371754016171 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "fmt" import "testing" var msgs []string func f(context string, msg string) int { fmt.Printf("debug callback called: context=%s msg=%s\n", context, msg) msgs = append(msgs, context, msg) return 0 } func Test600DebugCallback(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() err = h.SetDebugCallback(f) if err != nil { t.Fatalf("%s", err) } err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "null", }) if err != nil { t.Fatalf("%s", err) } err = h.Shutdown(nil) if err != nil { t.Fatalf("%s", err) } fmt.Printf("msgs = %s\n", msgs) } libnbd-1.20.3/golang/libnbd_610_error_test.go0000644000175000017500000000240114525371754014410 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "syscall" import "testing" func Test610Error(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() /* This will always return an error because the handle is not connected. */ buf := make([]byte, 512) err = h.Pread(buf, 0, nil) if err == nil { t.Fatalf("expected an error from operation") } else if err.(*LibnbdError).Errno != syscall.ENOTCONN { t.Fatalf("unexpected error: %s", err) } } libnbd-1.20.3/golang/libnbd_620_stats_test.go0000644000175000017500000000771314525371754014431 /* libnbd golang tests * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package libnbd import "testing" func Test620Stats(t *testing.T) { h, err := Create() if err != nil { t.Fatalf("could not create handle: %s", err) } defer h.Close() /* Pre-connection, stats start out at 0 */ bs0, err := h.StatsBytesSent() if err != nil { t.Fatalf("%s", err) } cs0, err := h.StatsChunksSent() if err != nil { t.Fatalf("%s", err) } br0, err := h.StatsBytesReceived() if err != nil { t.Fatalf("%s", err) } cr0, err := h.StatsChunksReceived() if err != nil { t.Fatalf("%s", err) } if bs0 != 0 { t.Fatalf("unexpected value for bs0") } if cs0 != 0 { t.Fatalf("unexpected value for cs0") } if br0 != 0 { t.Fatalf("unexpected value for br0") } if cr0 != 0 { t.Fatalf("unexpected value for cr0") } /* Connection performs handshaking, which increments stats. * The number of bytes/chunks here may grow over time as more features * get automatically negotiated, so merely check that they are non-zero. */ err = h.ConnectCommand([]string{ "nbdkit", "-s", "--exit-with-parent", "null", }) if err != nil { t.Fatalf("%s", err) } bs1, err := h.StatsBytesSent() if err != nil { t.Fatalf("%s", err) } cs1, err := h.StatsChunksSent() if err != nil { t.Fatalf("%s", err) } br1, err := h.StatsBytesReceived() if err != nil { t.Fatalf("%s", err) } cr1, err := h.StatsChunksReceived() if err != nil { t.Fatalf("%s", err) } if cs1 == 0 { t.Fatalf("unexpected value for cs1") } if bs1 <= cs1 { t.Fatalf("unexpected value for bs1") } if cr1 == 0 { t.Fatalf("unexpected value for cr1") } if br1 <= cr1 { t.Fatalf("unexpected value for br1") } /* A flush command should be one chunk out, one chunk back (even if * structured replies are in use) */ err = h.Flush(nil) if err != nil { t.Fatalf("%s", err) } bs2, err := h.StatsBytesSent() if err != nil { t.Fatalf("%s", err) } cs2, err := h.StatsChunksSent() if err != nil { t.Fatalf("%s", err) } br2, err := h.StatsBytesReceived() if err != nil { t.Fatalf("%s", err) } cr2, err := h.StatsChunksReceived() if err != nil { t.Fatalf("%s", err) } if bs2 != (bs1 + 28) { t.Fatalf("unexpected value for bs2") } if cs2 != (cs1 + 1) { t.Fatalf("unexpected value for cs2") } if br2 != (br1 + 16) { /* assumes nbdkit uses simple reply */ t.Fatalf("unexpected value for br2") } if cr2 != (cr1 + 1) { t.Fatalf("unexpected value for cr2") } /* Stats are still readable after the connection closes; we don't know if * the server sent reply bytes to our NBD_CMD_DISC, so don't insist on it. */ err = h.Shutdown(nil) if err != nil { t.Fatalf("%s", err) } bs3, err := h.StatsBytesSent() if err != nil { t.Fatalf("%s", err) } cs3, err := h.StatsChunksSent() if err != nil { t.Fatalf("%s", err) } br3, err := h.StatsBytesReceived() if err != nil { t.Fatalf("%s", err) } cr3, err := h.StatsChunksReceived() if err != nil { t.Fatalf("%s", err) } slop := uint64(1) if br2 == br3 { slop = uint64(0) } if bs3 <= bs2 { t.Fatalf("unexpected value for bs3") } if cs3 != (cs2 + 1) { t.Fatalf("unexpected value for cs3") } if br3 < br2 { t.Fatalf("unexpected value for br3") } if cr3 != (cr2 + slop) { t.Fatalf("unexpected value for cr3") } } libnbd-1.20.3/golang/make-dist.sh0000755000175000017500000000661114525371754012215 #!/bin/bash -e # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Create a distribution tree for serving the libnbd Go module. # # The web server must serve tree: # # libguestfs.org # └── libnbd # ├── @latest # └── @v # ├── list # ├── v1.11.4.info # ├── v1.11.4.mod # └── v1.11.4.zip # # For example: # # https://download.libguestfs.org/libnbd-golang/libguestfs.org/libnbd/@v/list # # To test the web server use: # # GOPROXY=https://download.libguestfs.org go get libguestfs.org/libnbd # # This should download the module and add it to the local cache, by # default in: # # ~/go/pkg/mod/libguestfs.org/libnbd@v1.11.4/ # # The Go tools will find the web server by looking at: # # https://libguestfs.org/libnbd # # Which must serve html document with this meta tag: # # # # With this, users can consume the libnbd Go bindings using: # # go get libguestfs.org/libnbd # version=$(git describe) # Create module zip file # # libguestfs.org # └── libnbd@v1.11.4 # ├── go.mod # ├── handle.go # ... # # See https://golang.org/ref/mod#zip-files version_dir="libguestfs.org/libnbd@$version" mkdir -p $version_dir tar cf - \ --exclude examples \ --exclude configure \ --exclude "*_test.go" \ go.mod README.md LICENSE *.go *.h | tar xf - -C $version_dir zip -rq $version.zip $version_dir/* rm -rf libguestfs.org # Create web server tree. # # libguestfs.org # └── libnbd # ├── @latest # └── @v # ├── list # ├── v1.11.4.info # ├── v1.11.4.mod # └── v1.11.4.zip # # See https://golang.org/ref/mod#serving-from-proxy module_dir=libguestfs.org/libnbd v_dir=$module_dir/@v mkdir -p $v_dir # Go wants a string in RFC 3339 format, git strict ISO 8601 format is # compatible. info="{ \"Version\": \"$version\", \"Time\": \"$(git show -s --format=%cI)\" }" echo "$info" > $module_dir/@latest echo "$info" > $v_dir/$version.info cp go.mod $v_dir/$version.mod mv $version.zip $v_dir # Create the list file by amending the curent file on the server. list_url=https://download.libguestfs.org/libnbd/golang/libguestfs.org/libnbd/@v/list curl --silent --show-error "$list_url" | sort > $v_dir/list grep -q "$version" $v_dir/list || echo "$version" >> $v_dir/list # Create tarball to upload and extract on the webserver. It should be # extracted in the directory pointed by the "go-import" meta tag. output=$PWD/libnbd-golang-$version.tar.gz tar czf $output libguestfs.org rm -rf libguestfs.org echo output written to $output libnbd-1.20.3/golang/run-tests.sh0000755000175000017500000000264214525371754012303 #!/bin/bash - # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x # Set by functions.sh and used in the tests. export abs_top_srcdir requires nbdkit --version # The -count=1 parameter is the "idiomatic way to bypass test caching". # https://golang.org/doc/go1.10#test # The -v option enables verbose output. $GOLANG test -count=1 -v # Run the only benchmarks with 10 milliseconds timeout to make sure they # do not break by mistake, without overloading the CI. For performance # testing run "go test" directly. # The -run=- parameter is the way to match no test, assuming that no test or # sub test contains "-" in the name. $GOLANG test -run=- -bench=. -benchtime=10ms libnbd-1.20.3/golang/examples/0000755000175000017500000000000014675532655011677 5libnbd-1.20.3/golang/examples/aio_copy/0000755000175000017500000000000014675532655013501 5libnbd-1.20.3/golang/examples/aio_copy/go.mod0000644000175000017500000000013314525371754014517 module main replace libguestfs.org/libnbd => ../../ require libguestfs.org/libnbd v1.11.5 libnbd-1.20.3/golang/examples/aio_copy/aio_copy.go0000644000175000017500000001016414525371754015547 /* libnbd example * Copyright Red Hat * Examples are under a permissive BSD-like license. See also * golang/examples/LICENSE-For-EXAMPLES * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ // Copy image from NBD URI to stdout. // // Example: // // ./aio_copy nbd+unix:///?socket=/tmp.nbd >/dev/null package main import ( "container/list" "flag" "os" "syscall" "libguestfs.org/libnbd" ) var ( // These options give best performance with fast NVMe drive. requestSize = flag.Uint("request-size", 256*1024, "maximum request size in bytes") requests = flag.Uint("requests", 4, "maximum number of requests in flight") h *libnbd.Libnbd // Keeping commands in a queue ensures commands are written in the right // order, even if they complete out of order. This allows parallel reads // with non-seekable output. queue list.List ) // command keeps state of single AioPread call while the read is handled by // libnbd, until the command reach the front of the queue and can be writen to // the output. type command struct { buf libnbd.AioBuffer ready bool } func main() { flag.Parse() var err error h, err = libnbd.Create() if err != nil { panic(err) } defer h.Close() err = h.ConnectUri(flag.Arg(0)) if err != nil { panic(err) } size, err := h.GetSize() if err != nil { panic(err) } var offset uint64 for offset < size || queue.Len() > 0 { for offset < size && inflightRequests() < *requests { length := *requestSize if size-offset < uint64(length) { length = uint(size - offset) } startRead(offset, length) offset += uint64(length) } waitForCompletion() for readReady() { finishRead() } } } func inflightRequests() uint { n, err := h.AioInFlight() if err != nil { panic(err) } return n } func waitForCompletion() { start := inflightRequests() for { _, err := h.Poll(-1) if err != nil { panic(err) } if inflightRequests() < start { break // A read completed. } } } func startRead(offset uint64, length uint) { cmd := &command{buf: libnbd.MakeAioBuffer(length)} args := libnbd.AioPreadOptargs{ CompletionCallbackSet: true, CompletionCallback: func(error *int) int { if *error != 0 { // This is not documented, but *error is errno value translated // from the the NBD server error. err := syscall.Errno(*error).Error() panic(err) } cmd.ready = true return 1 }, } _, err := h.AioPread(cmd.buf, offset, &args) if err != nil { panic(err) } queue.PushBack(cmd) } func readReady() bool { return queue.Len() > 0 && queue.Front().Value.(*command).ready } func finishRead() { e := queue.Front() queue.Remove(e) cmd := e.Value.(*command) _, err := os.Stdout.Write(cmd.buf.Slice()) if err != nil { panic(err) } cmd.buf.Free() } libnbd-1.20.3/golang/examples/get_size/0000755000175000017500000000000014675532655013510 5libnbd-1.20.3/golang/examples/get_size/go.mod0000644000175000017500000000013214525371754014525 module main replace libguestfs.org/libnbd => ../../ require libguestfs.org/libnbd v1.0.0 libnbd-1.20.3/golang/examples/get_size/get_size.go0000644000175000017500000000363314615667202015564 /* libnbd example * Copyright Red Hat * Examples are under a permissive BSD-like license. See also * golang/examples/LICENSE-For-EXAMPLES * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ package main import ( "fmt" "libguestfs.org/libnbd" "os" ) func main() { h, err := libnbd.Create() if err != nil { panic(err) } defer h.Close() err = h.ConnectUri(os.Args[1]) if err != nil { panic(err) } size, err := h.GetSize() if err != nil { panic(err) } fmt.Printf("size of %s = %d\n", os.Args[1], size) } libnbd-1.20.3/golang/examples/read_first_sector/0000755000175000017500000000000014675532655015400 5libnbd-1.20.3/golang/examples/read_first_sector/go.mod0000644000175000017500000000013214525371754016415 module main replace libguestfs.org/libnbd => ../../ require libguestfs.org/libnbd v1.0.0 libnbd-1.20.3/golang/examples/read_first_sector/read_first_sector.go0000644000175000017500000000374614525371754021355 /* libnbd example * Copyright Red Hat * Examples are under a permissive BSD-like license. See also * golang/examples/LICENSE-For-EXAMPLES * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ package main import ( "encoding/hex" "fmt" "libguestfs.org/libnbd" "os" ) func main() { h, err := libnbd.Create() if err != nil { panic(err) } defer h.Close() err = h.ConnectUri(os.Args[1]) if err != nil { panic(err) } buf := make([]byte, 512) err = h.Pread(buf, 0, nil) if err != nil { panic(err) } fmt.Printf("first sector of %s =\n%s\n", os.Args[1], hex.EncodeToString(buf)) } libnbd-1.20.3/golang/examples/simple_copy/0000755000175000017500000000000014675532655014222 5libnbd-1.20.3/golang/examples/simple_copy/go.mod0000644000175000017500000000013314525371754015240 module main replace libguestfs.org/libnbd => ../../ require libguestfs.org/libnbd v1.11.5 libnbd-1.20.3/golang/examples/simple_copy/simple_copy.go0000644000175000017500000000461114525371754017011 /* libnbd example * Copyright Red Hat * Examples are under a permissive BSD-like license. See also * golang/examples/LICENSE-For-EXAMPLES * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Red Hat nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ // Copy image from NBD URI to stdout. // // Example: // // ./simple_copy nbd+unix:///?socket=/tmp.nbd >/dev/null package main import ( "flag" "os" "libguestfs.org/libnbd" ) var ( requestSize = flag.Uint("buffer-size", 2048*1024, "maximum request size in bytes") ) func main() { flag.Parse() h, err := libnbd.Create() if err != nil { panic(err) } defer h.Close() err = h.ConnectUri(flag.Arg(0)) if err != nil { panic(err) } size, err := h.GetSize() if err != nil { panic(err) } buf := make([]byte, *requestSize) var offset uint64 for offset < size { if size-offset < uint64(len(buf)) { buf = buf[:offset-size] } err = h.Pread(buf, offset, nil) if err != nil { panic(err) } _, err := os.Stdout.Write(buf) if err != nil { panic(err) } offset += uint64(len(buf)) } } libnbd-1.20.3/golang/examples/Makefile.am0000644000175000017500000000352214525371754013650 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk EXTRA_DIST = \ LICENSE-FOR-EXAMPLES \ get_size/go.mod \ get_size/get_size.go \ read_first_sector/go.mod \ read_first_sector/read_first_sector.go \ simple_copy/go.mod \ simple_copy/simple_copy.go \ aio_copy/go.mod \ aio_copy/aio_copy.go \ $(NULL) if HAVE_GOLANG noinst_SCRIPTS = \ get_size/get_size \ read_first_sector/read_first_sector \ simple_copy/simple_copy \ aio_copy/aio_copy \ $(NULL) get_size/get_size: get_size/get_size.go cd get_size && \ $(abs_top_builddir)/run go build -o get_size read_first_sector/read_first_sector: read_first_sector/read_first_sector.go cd read_first_sector && \ $(abs_top_builddir)/run go build -o read_first_sector simple_copy/simple_copy: simple_copy/simple_copy.go cd simple_copy && \ $(abs_top_builddir)/run go build -o simple_copy aio_copy/aio_copy: aio_copy/aio_copy.go cd aio_copy && \ $(abs_top_builddir)/run go build -o aio_copy endif HAVE_GOLANG CLEANFILES += \ get_size/get_size \ read_first_sector/read_first_sector \ simple_copy/simple_copy \ aio_copy/aio_copy \ $(NULL) libnbd-1.20.3/golang/examples/Makefile.in0000644000175000017500000004640414675532455013672 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # common-rules.mk is included in every Makefile.am. # subdir-rules.mk is included only in subdirectories. 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Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: libnbd-1.20.3/golang/examples/LICENSE-FOR-EXAMPLES0000644000175000017500000000342714525371754014465 The files in the golang/examples/ directory are licensed under this very permissive BSD license. This means that you can copy, use, adapt and modify them without any significant restrictions. You can also combine them with proprietary code or include them in code that is distributed under other open source licenses. ---------------------------------------------------------------------- libnbd examples Copyright Red Hat Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Red Hat nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. libnbd-1.20.3/rust/0000755000175000017500000000000014675532655007607 5libnbd-1.20.3/rust/cargo_test/0000755000175000017500000000000014675532655011741 5libnbd-1.20.3/rust/cargo_test/src/0000755000175000017500000000000014675532655012530 5libnbd-1.20.3/rust/cargo_test/src/lib.rs0000644000175000017500000000201514525371754013555 // nbd client library in userspace // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA /// A dummy test function which adds one to an 32-bit integer. pub fn add_one(i: i32) -> i32 { i + 1 } #[cfg(test)] mod tests { use super::*; #[test] fn test_add_one() { assert_eq!(add_one(42), 43); } } libnbd-1.20.3/rust/cargo_test/Cargo.toml0000644000175000017500000000157014525371754013607 # nbd client library in userspace # Copyright Tage Johansson # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA [workspace] [package] name = "cargo_test" edition = "2021" rust-version = "1.69" version = "0.1.0" libnbd-1.20.3/rust/cargo_test/README.md0000644000175000017500000000045114525371754013133 The solely purpose of this directory is to serve as a test crate for checking if Cargo is useable. `cargo test`, `cargo doc` and `cargo fmt` are run in the Autoconf script in this directory. If any of the commands failes, Cargo is assumed not to be useable and the Rust bindings will be disabled. libnbd-1.20.3/rust/examples/0000755000175000017500000000000014675532655011425 5libnbd-1.20.3/rust/examples/concurrent-read-write.rs0000644000175000017500000001160014525371754016127 //! Example usage with nbdkit: //! nbdkit -U - memory 100M \ //! --run 'cargo run --example concurrent-read-write -- $unixsocket' //! Or connect over a URI: //! nbdkit -U - memory 100M \ //! --run 'cargo run --example concurrent-read-write -- "$uri"' //! //! This will read and write randomly over the plugin using multi-conn, //! multiple threads and multiple requests in flight on each thread. #![deny(warnings)] use rand::prelude::*; use std::env; use std::sync::Arc; use tokio::task::JoinSet; /// Number of simultaneous connections to the NBD server. /// /// Note that some servers only support a limited number of /// simultaneous connections, and/or have a configurable thread pool /// internally, and if you exceed those limits then something will break. const NR_MULTI_CONN: usize = 8; /// Number of commands that can be "in flight" at the same time on each /// connection. (Therefore the total number of requests in flight may /// be up to NR_MULTI_CONN * MAX_IN_FLIGHT). const MAX_IN_FLIGHT: usize = 16; /// The size of large reads and writes, must be > 512. const BUFFER_SIZE: usize = 1024; /// Number of commands we issue (per [task][tokio::task]). const NR_CYCLES: usize = 32; /// Statistics gathered during the run. #[derive(Debug, Default)] struct Stats { /// The total number of requests made. requests: usize, } #[tokio::main] async fn main() -> anyhow::Result<()> { let args = env::args_os().collect::>(); if args.len() != 2 { anyhow::bail!("Usage: {:?} socket", args[0]); } // We begin by making a connection to the server to get the export size // and ensure that it supports multiple connections and is writable. let nbd = libnbd::Handle::new()?; // Check if the user provided a URI or a unix socket. let socket_or_uri = args[1].to_str().unwrap(); if socket_or_uri.contains("://") { nbd.connect_uri(socket_or_uri)?; } else { nbd.connect_unix(socket_or_uri)?; } let export_size = nbd.get_size()?; anyhow::ensure!( (BUFFER_SIZE as u64) < export_size, "export is {export_size}B, must be larger than {BUFFER_SIZE}B" ); anyhow::ensure!( !nbd.is_read_only()?, "error: this NBD export is read-only" ); anyhow::ensure!( nbd.can_multi_conn()?, "error: this NBD export does not support multi-conn" ); drop(nbd); // Close the connection. // Start the worker tasks, one per connection. let mut tasks = JoinSet::new(); for i in 0..NR_MULTI_CONN { tasks.spawn(run_thread(i, socket_or_uri.to_owned(), export_size)); } // Wait for the tasks to complete. let mut stats = Stats::default(); while !tasks.is_empty() { let this_stats = tasks.join_next().await.unwrap().unwrap()?; stats.requests += this_stats.requests; } // Make sure the number of requests that were required matches what // we expect. assert_eq!(stats.requests, NR_MULTI_CONN * NR_CYCLES); Ok(()) } async fn run_thread( task_idx: usize, socket_or_uri: String, export_size: u64, ) -> anyhow::Result { // Start a new connection to the server. // We shall spawn many commands concurrently on different tasks and those // futures must be `'static`, hence we wrap the handle in an [Arc]. let nbd = Arc::new(libnbd::AsyncHandle::new()?); // Check if the user provided a URI or a unix socket. if socket_or_uri.contains("://") { nbd.connect_uri(socket_or_uri).await?; } else { nbd.connect_unix(socket_or_uri).await?; } let mut rng = SmallRng::seed_from_u64(task_idx as u64); // Issue commands. let mut stats = Stats::default(); let mut join_set = JoinSet::new(); while stats.requests < NR_CYCLES || !join_set.is_empty() { while stats.requests < NR_CYCLES && join_set.len() < MAX_IN_FLIGHT { // If we want to issue another request, do so. Note that we reuse // the same buffer for multiple in-flight requests. It doesn't // matter here because we're just trying to write random stuff, // but that would be Very Bad in a real application. // Simulate a mix of large and small requests. let size = if rng.gen() { BUFFER_SIZE } else { 512 }; let offset = rng.gen_range(0..export_size - size as u64); let mut buf = [0u8; BUFFER_SIZE]; let nbd = nbd.clone(); if rng.gen() { join_set.spawn(async move { nbd.pread(&mut buf, offset, None).await }); } else { // Fill the buf with random data. rng.fill(&mut buf); join_set .spawn(async move { nbd.pwrite(&buf, offset, None).await }); } stats.requests += 1; } join_set.join_next().await.unwrap().unwrap()?; } Ok(stats) } libnbd-1.20.3/rust/examples/connect-command.rs0000644000175000017500000000223414525371754014754 //! This example shows how to run an NBD server //! (nbdkit) as a subprocess of libnbd. fn main() -> libnbd::Result<()> { // Create the libnbd handle. let handle = libnbd::Handle::new()?; // Run nbdkit as a subprocess. let args = [ "nbdkit", // You must use ‘-s’ (which tells nbdkit to serve // a single connection on stdin/stdout). "-s", // It is recommended to use ‘--exit-with-parent’ // to ensure nbdkit is always cleaned up even // if the main program crashes. "--exit-with-parent", // Use this to enable nbdkit debugging. "-v", // The nbdkit plugin name - this is a RAM disk. "memory", "size=1M", ]; handle.connect_command(&args)?; // Write some random data to the first sector. let wbuf: Vec = (0..512).into_iter().map(|i| (i % 13) as u8).collect(); handle.pwrite(&wbuf, 0, None)?; // Read the first sector back. let mut rbuf = [0; 512]; handle.pread(&mut rbuf, 0, None)?; // What was read must be exactly the same as what was written. assert_eq!(wbuf.as_slice(), rbuf.as_slice()); Ok(()) } libnbd-1.20.3/rust/examples/get-size.rs0000644000175000017500000000214314525371754013435 //! This example shows how to connect to an NBD //! server and read the size of the disk. //! //! You can test it with nbdkit like this: //! //! nbdkit -U - memory 1M \ //! --run 'cargo run --example get-size -- $unixsocket' //! Or with a URI: //! nbdkit -U - memory 1M \ //! --run 'cargo run --example get-size -- "$uri"' //! //! Or connect over a URI: //! cargo run --example get-size -- nbd://hostname:port use std::env; fn main() -> anyhow::Result<()> { let nbd = libnbd::Handle::new()?; let args = env::args_os().collect::>(); if args.len() != 2 { anyhow::bail!("Usage: {:?} socket", args[0]); } // Check if the user provided a URI or a unix socket. let socket_or_uri = args[1].to_str().unwrap(); if socket_or_uri.contains("://") { nbd.connect_uri(socket_or_uri)?; } else { // Connect to the NBD server over a Unix domain socket. nbd.connect_unix(socket_or_uri)?; } // Read the size in bytes and print it. let size = nbd.get_size()?; println!("{:?}: size = {size} bytes", socket_or_uri); Ok(()) } libnbd-1.20.3/rust/examples/fetch-first-sector.rs0000644000175000017500000000245214525371754015424 //! This example shows how to connect to an NBD server //! and fetch and print the first sector (usually the //! boot sector or partition table or filesystem //! superblock). //! //! You can test it with nbdkit like this: //! //! nbdkit -U - floppy . \ //! --run 'cargo run --example fetch-first-sector -- $unixsocket' //! Or with a URI: //! nbdkit -U - floppy . \ //! --run 'cargo run --example fetch-first-sector -- "$uri"' //! //! The nbdkit floppy plugin creates an MBR disk so the //! first sector is the partition table. use pretty_hex::pretty_hex; use std::env; fn main() -> anyhow::Result<()> { let nbd = libnbd::Handle::new()?; let args = env::args_os().collect::>(); if args.len() != 2 { anyhow::bail!("Usage: {:?} socket", args[0]); } // Check if the user provided a URI or a unix socket. let socket_or_uri = args[1].to_str().unwrap(); if socket_or_uri.contains("://") { nbd.connect_uri(socket_or_uri)?; } else { // Connect to the NBD server over a Unix domain socket. nbd.connect_unix(socket_or_uri)?; } // Read the first sector synchronously. let mut buf = [0; 512]; nbd.pread(&mut buf, 0, None)?; // Print the sector in hexdump like format. print!("{}", pretty_hex(&buf)); Ok(()) } libnbd-1.20.3/rust/libnbd-sys/0000755000175000017500000000000014675532655011655 5libnbd-1.20.3/rust/libnbd-sys/src/0000755000175000017500000000000014675532655012444 5libnbd-1.20.3/rust/libnbd-sys/src/generated.rs0000444000175000017500000004600114603467134014655 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Tage Johansson * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ use libc::*; use std::ffi::c_void; #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct nbd_handle { _unused: [u8; 0], } #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct nbd_extent { length: u64, flags: u64, } extern "C" { pub fn nbd_get_error() -> *const c_char; pub fn nbd_get_errno() -> c_int; pub fn nbd_create() -> *mut nbd_handle; pub fn nbd_close(h: *mut nbd_handle); } #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct nbd_chunk_callback { pub callback: Option< unsafe extern "C" fn( *mut c_void, *const c_void, usize, u64, c_uint, *mut c_int, ) -> c_int, >, pub user_data: *mut c_void, pub free: Option, } #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct nbd_completion_callback { pub callback: Option c_int>, pub user_data: *mut c_void, pub free: Option, } #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct nbd_debug_callback { pub callback: Option< unsafe extern "C" fn( *mut c_void, *const c_char, *const c_char, ) -> c_int, >, pub user_data: *mut c_void, pub free: Option, } #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct nbd_extent_callback { pub callback: Option< unsafe extern "C" fn( *mut c_void, *const c_char, u64, *mut u32, usize, *mut c_int, ) -> c_int, >, pub user_data: *mut c_void, pub free: Option, } #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct nbd_extent64_callback { pub callback: Option< unsafe extern "C" fn( *mut c_void, *const c_char, u64, *mut nbd_extent, usize, *mut c_int, ) -> c_int, >, pub user_data: *mut c_void, pub free: Option, } #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct nbd_list_callback { pub callback: Option< unsafe extern "C" fn( *mut c_void, *const c_char, *const c_char, ) -> c_int, >, pub user_data: *mut c_void, pub free: Option, } #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct nbd_context_callback { pub callback: Option c_int>, pub user_data: *mut c_void, pub free: Option, } extern "C" { pub fn nbd_set_debug(handle: *mut nbd_handle, debug: bool) -> c_int; pub fn nbd_get_debug(handle: *mut nbd_handle) -> c_int; pub fn nbd_set_debug_callback( handle: *mut nbd_handle, debug: nbd_debug_callback, ) -> c_int; pub fn nbd_clear_debug_callback(handle: *mut nbd_handle) -> c_int; pub fn nbd_stats_bytes_sent(handle: *mut nbd_handle) -> u64; pub fn nbd_stats_chunks_sent(handle: *mut nbd_handle) -> u64; pub fn nbd_stats_bytes_received(handle: *mut nbd_handle) -> u64; pub fn nbd_stats_chunks_received(handle: *mut nbd_handle) -> u64; pub fn nbd_set_handle_name( handle: *mut nbd_handle, handle_name: *const c_char, ) -> c_int; pub fn nbd_get_handle_name(handle: *mut nbd_handle) -> *mut c_char; pub fn nbd_set_private_data( handle: *mut nbd_handle, private_data: uintptr_t, ) -> uintptr_t; pub fn nbd_get_private_data(handle: *mut nbd_handle) -> uintptr_t; pub fn nbd_set_export_name( handle: *mut nbd_handle, export_name: *const c_char, ) -> c_int; pub fn nbd_get_export_name(handle: *mut nbd_handle) -> *mut c_char; pub fn nbd_set_request_block_size( handle: *mut nbd_handle, request: bool, ) -> c_int; pub fn nbd_get_request_block_size(handle: *mut nbd_handle) -> c_int; pub fn nbd_set_full_info(handle: *mut nbd_handle, request: bool) -> c_int; pub fn nbd_get_full_info(handle: *mut nbd_handle) -> c_int; pub fn nbd_get_canonical_export_name( handle: *mut nbd_handle, ) -> *mut c_char; pub fn nbd_get_export_description(handle: *mut nbd_handle) -> *mut c_char; pub fn nbd_set_tls(handle: *mut nbd_handle, tls: c_int) -> c_int; pub fn nbd_get_tls(handle: *mut nbd_handle) -> c_int; pub fn nbd_get_tls_negotiated(handle: *mut nbd_handle) -> c_int; pub fn nbd_set_tls_certificates( handle: *mut nbd_handle, dir: *const c_char, ) -> c_int; pub fn nbd_set_tls_verify_peer( handle: *mut nbd_handle, verify: bool, ) -> c_int; pub fn nbd_get_tls_verify_peer(handle: *mut nbd_handle) -> c_int; pub fn nbd_set_tls_username( handle: *mut nbd_handle, username: *const c_char, ) -> c_int; pub fn nbd_get_tls_username(handle: *mut nbd_handle) -> *mut c_char; pub fn nbd_set_tls_psk_file( handle: *mut nbd_handle, filename: *const c_char, ) -> c_int; pub fn nbd_set_request_extended_headers( handle: *mut nbd_handle, request: bool, ) -> c_int; pub fn nbd_get_request_extended_headers(handle: *mut nbd_handle) -> c_int; pub fn nbd_get_extended_headers_negotiated( handle: *mut nbd_handle, ) -> c_int; pub fn nbd_set_request_structured_replies( handle: *mut nbd_handle, request: bool, ) -> c_int; pub fn nbd_get_request_structured_replies(handle: *mut nbd_handle) -> c_int; pub fn nbd_get_structured_replies_negotiated( handle: *mut nbd_handle, ) -> c_int; pub fn nbd_set_request_meta_context( handle: *mut nbd_handle, request: bool, ) -> c_int; pub fn nbd_get_request_meta_context(handle: *mut nbd_handle) -> c_int; pub fn nbd_set_handshake_flags( handle: *mut nbd_handle, flags: u32, ) -> c_int; pub fn nbd_get_handshake_flags(handle: *mut nbd_handle) -> u32; pub fn nbd_set_pread_initialize( handle: *mut nbd_handle, request: bool, ) -> c_int; pub fn nbd_get_pread_initialize(handle: *mut nbd_handle) -> c_int; pub fn nbd_set_strict_mode(handle: *mut nbd_handle, flags: u32) -> c_int; pub fn nbd_get_strict_mode(handle: *mut nbd_handle) -> u32; pub fn nbd_set_opt_mode(handle: *mut nbd_handle, enable: bool) -> c_int; pub fn nbd_get_opt_mode(handle: *mut nbd_handle) -> c_int; pub fn nbd_opt_go(handle: *mut nbd_handle) -> c_int; pub fn nbd_opt_abort(handle: *mut nbd_handle) -> c_int; pub fn nbd_opt_starttls(handle: *mut nbd_handle) -> c_int; pub fn nbd_opt_extended_headers(handle: *mut nbd_handle) -> c_int; pub fn nbd_opt_structured_reply(handle: *mut nbd_handle) -> c_int; pub fn nbd_opt_list( handle: *mut nbd_handle, list: nbd_list_callback, ) -> c_int; pub fn nbd_opt_info(handle: *mut nbd_handle) -> c_int; pub fn nbd_opt_list_meta_context( handle: *mut nbd_handle, context: nbd_context_callback, ) -> c_int; pub fn nbd_opt_list_meta_context_queries( handle: *mut nbd_handle, queries: *mut *mut c_char, context: nbd_context_callback, ) -> c_int; pub fn nbd_opt_set_meta_context( handle: *mut nbd_handle, context: nbd_context_callback, ) -> c_int; pub fn nbd_opt_set_meta_context_queries( handle: *mut nbd_handle, queries: *mut *mut c_char, context: nbd_context_callback, ) -> c_int; pub fn nbd_add_meta_context( handle: *mut nbd_handle, name: *const c_char, ) -> c_int; pub fn nbd_get_nr_meta_contexts(handle: *mut nbd_handle) -> isize; pub fn nbd_get_meta_context( handle: *mut nbd_handle, i: size_t, ) -> *mut c_char; pub fn nbd_clear_meta_contexts(handle: *mut nbd_handle) -> c_int; pub fn nbd_set_uri_allow_transports( handle: *mut nbd_handle, mask: u32, ) -> c_int; pub fn nbd_set_uri_allow_tls(handle: *mut nbd_handle, tls: c_int) -> c_int; pub fn nbd_set_uri_allow_local_file( handle: *mut nbd_handle, allow: bool, ) -> c_int; pub fn nbd_connect_uri( handle: *mut nbd_handle, uri: *const c_char, ) -> c_int; pub fn nbd_connect_unix( handle: *mut nbd_handle, unixsocket: *const c_char, ) -> c_int; pub fn nbd_connect_vsock( handle: *mut nbd_handle, cid: u32, port: u32, ) -> c_int; pub fn nbd_connect_tcp( handle: *mut nbd_handle, hostname: *const c_char, port: *const c_char, ) -> c_int; pub fn nbd_connect_socket(handle: *mut nbd_handle, sock: c_int) -> c_int; pub fn nbd_connect_command( handle: *mut nbd_handle, argv: *mut *mut c_char, ) -> c_int; pub fn nbd_connect_systemd_socket_activation( handle: *mut nbd_handle, argv: *mut *mut c_char, ) -> c_int; pub fn nbd_set_socket_activation_name( handle: *mut nbd_handle, socket_name: *const c_char, ) -> c_int; pub fn nbd_get_socket_activation_name( handle: *mut nbd_handle, ) -> *mut c_char; pub fn nbd_is_read_only(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_flush(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_fua(handle: *mut nbd_handle) -> c_int; pub fn nbd_is_rotational(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_trim(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_zero(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_fast_zero(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_block_status_payload(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_df(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_multi_conn(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_cache(handle: *mut nbd_handle) -> c_int; pub fn nbd_can_meta_context( handle: *mut nbd_handle, metacontext: *const c_char, ) -> c_int; pub fn nbd_get_protocol(handle: *mut nbd_handle) -> *const c_char; pub fn nbd_get_size(handle: *mut nbd_handle) -> i64; pub fn nbd_get_block_size(handle: *mut nbd_handle, size_type: c_int) -> i64; pub fn nbd_pread( handle: *mut nbd_handle, buf: *mut c_void, count: usize, offset: u64, flags: u32, ) -> c_int; pub fn nbd_pread_structured( handle: *mut nbd_handle, buf: *mut c_void, count: usize, offset: u64, chunk: nbd_chunk_callback, flags: u32, ) -> c_int; pub fn nbd_pwrite( handle: *mut nbd_handle, buf: *const c_void, count: usize, offset: u64, flags: u32, ) -> c_int; pub fn nbd_shutdown(handle: *mut nbd_handle, flags: u32) -> c_int; pub fn nbd_flush(handle: *mut nbd_handle, flags: u32) -> c_int; pub fn nbd_trim( handle: *mut nbd_handle, count: u64, offset: u64, flags: u32, ) -> c_int; pub fn nbd_cache( handle: *mut nbd_handle, count: u64, offset: u64, flags: u32, ) -> c_int; pub fn nbd_zero( handle: *mut nbd_handle, count: u64, offset: u64, flags: u32, ) -> c_int; pub fn nbd_block_status( handle: *mut nbd_handle, count: u64, offset: u64, extent: nbd_extent_callback, flags: u32, ) -> c_int; pub fn nbd_block_status_64( handle: *mut nbd_handle, count: u64, offset: u64, extent64: nbd_extent64_callback, flags: u32, ) -> c_int; pub fn nbd_block_status_filter( handle: *mut nbd_handle, count: u64, offset: u64, contexts: *mut *mut c_char, extent64: nbd_extent64_callback, flags: u32, ) -> c_int; pub fn nbd_poll(handle: *mut nbd_handle, timeout: c_int) -> c_int; pub fn nbd_poll2( handle: *mut nbd_handle, fd: c_int, timeout: c_int, ) -> c_int; pub fn nbd_aio_connect( handle: *mut nbd_handle, addr: *const sockaddr, addrlen: socklen_t, ) -> c_int; pub fn nbd_aio_connect_uri( handle: *mut nbd_handle, uri: *const c_char, ) -> c_int; pub fn nbd_aio_connect_unix( handle: *mut nbd_handle, unixsocket: *const c_char, ) -> c_int; pub fn nbd_aio_connect_vsock( handle: *mut nbd_handle, cid: u32, port: u32, ) -> c_int; pub fn nbd_aio_connect_tcp( handle: *mut nbd_handle, hostname: *const c_char, port: *const c_char, ) -> c_int; pub fn nbd_aio_connect_socket( handle: *mut nbd_handle, sock: c_int, ) -> c_int; pub fn nbd_aio_connect_command( handle: *mut nbd_handle, argv: *mut *mut c_char, ) -> c_int; pub fn nbd_aio_connect_systemd_socket_activation( handle: *mut nbd_handle, argv: *mut *mut c_char, ) -> c_int; pub fn nbd_aio_opt_go( handle: *mut nbd_handle, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_opt_abort(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_opt_starttls( handle: *mut nbd_handle, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_opt_extended_headers( handle: *mut nbd_handle, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_opt_structured_reply( handle: *mut nbd_handle, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_opt_list( handle: *mut nbd_handle, list: nbd_list_callback, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_opt_info( handle: *mut nbd_handle, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_opt_list_meta_context( handle: *mut nbd_handle, context: nbd_context_callback, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_opt_list_meta_context_queries( handle: *mut nbd_handle, queries: *mut *mut c_char, context: nbd_context_callback, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_opt_set_meta_context( handle: *mut nbd_handle, context: nbd_context_callback, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_opt_set_meta_context_queries( handle: *mut nbd_handle, queries: *mut *mut c_char, context: nbd_context_callback, completion: nbd_completion_callback, ) -> c_int; pub fn nbd_aio_pread( handle: *mut nbd_handle, buf: *mut c_void, count: usize, offset: u64, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_pread_structured( handle: *mut nbd_handle, buf: *mut c_void, count: usize, offset: u64, chunk: nbd_chunk_callback, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_pwrite( handle: *mut nbd_handle, buf: *const c_void, count: usize, offset: u64, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_disconnect(handle: *mut nbd_handle, flags: u32) -> c_int; pub fn nbd_aio_flush( handle: *mut nbd_handle, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_trim( handle: *mut nbd_handle, count: u64, offset: u64, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_cache( handle: *mut nbd_handle, count: u64, offset: u64, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_zero( handle: *mut nbd_handle, count: u64, offset: u64, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_block_status( handle: *mut nbd_handle, count: u64, offset: u64, extent: nbd_extent_callback, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_block_status_64( handle: *mut nbd_handle, count: u64, offset: u64, extent64: nbd_extent64_callback, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_block_status_filter( handle: *mut nbd_handle, count: u64, offset: u64, contexts: *mut *mut c_char, extent64: nbd_extent64_callback, completion: nbd_completion_callback, flags: u32, ) -> i64; pub fn nbd_aio_get_fd(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_get_direction(handle: *mut nbd_handle) -> c_uint; pub fn nbd_aio_notify_read(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_notify_write(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_is_created(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_is_connecting(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_is_negotiating(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_is_ready(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_is_processing(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_is_dead(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_is_closed(handle: *mut nbd_handle) -> c_int; pub fn nbd_aio_command_completed( handle: *mut nbd_handle, cookie: u64, ) -> c_int; pub fn nbd_aio_peek_command_completed(handle: *mut nbd_handle) -> i64; pub fn nbd_aio_in_flight(handle: *mut nbd_handle) -> c_int; pub fn nbd_connection_state(handle: *mut nbd_handle) -> *const c_char; pub fn nbd_get_package_name(handle: *mut nbd_handle) -> *const c_char; pub fn nbd_get_version(handle: *mut nbd_handle) -> *const c_char; pub fn nbd_kill_subprocess(handle: *mut nbd_handle, signum: c_int) -> c_int; pub fn nbd_supports_tls(handle: *mut nbd_handle) -> c_int; pub fn nbd_supports_vsock(handle: *mut nbd_handle) -> c_int; pub fn nbd_supports_uri(handle: *mut nbd_handle) -> c_int; pub fn nbd_get_uri(handle: *mut nbd_handle) -> *mut c_char; } libnbd-1.20.3/rust/libnbd-sys/src/lib.rs0000644000175000017500000000151114525371754013471 // nbd client library in userspace // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA mod generated; pub use generated::*; libnbd-1.20.3/rust/libnbd-sys/Cargo.toml0000644000175000017500000000211114525371754013513 # nbd client library in userspace # Copyright Tage Johansson # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA [package] name = "libnbd-sys" version.workspace = true rust-version.workspace = true edition.workspace = true description.workspace = true license.workspace = true keywords.workspace = true categories.workspace = true links = "nbd" [build-dependencies] pkg-config = "0.3.27" [dependencies] libc = "0.2.147" libnbd-1.20.3/rust/libnbd-sys/build.rs0000644000175000017500000000200214525371754013227 // nbd client library in userspace // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA use std::fs; fn main() { let libnbd_version = fs::read_to_string("libnbd_version").unwrap(); pkg_config::Config::new() .atleast_version(libnbd_version.trim()) .probe("libnbd") .unwrap(); } libnbd-1.20.3/rust/src/0000755000175000017500000000000014675532655010376 5libnbd-1.20.3/rust/src/async_bindings.rs0000444000175000017500000076126114603467134013657 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Tage Johansson * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ use crate::{types::*, *}; use os_socketaddr::OsSocketAddr; use std::ffi::*; use std::mem; use std::net::SocketAddr; use std::os::fd::{AsRawFd, OwnedFd}; use std::os::unix::prelude::*; use std::path::PathBuf; use std::ptr; use std::sync::Arc; use tokio::sync::oneshot; impl AsyncHandle { /// ask server to negotiate metadata context /// /// During connection libnbd can negotiate zero or more metadata /// contexts with the server. Metadata contexts are features (such /// as `"base:allocation"`) which describe information returned /// by the [block_status_64](Handle::block_status_64) command (for `"base:allocation"` /// this is whether blocks of data are allocated, zero or sparse). /// /// This call adds one metadata context to the list to be negotiated. /// You can call it as many times as needed. The list is initially /// empty when the handle is created; you can check the contents of /// the list with [get_nr_meta_contexts](Handle::get_nr_meta_contexts) and /// [get_meta_context](Handle::get_meta_context), or clear it with /// [clear_meta_contexts](Handle::clear_meta_contexts). /// /// The NBD protocol limits meta context names to 4096 bytes, but /// servers may not support the full length. The encoding of meta /// context names is always UTF-8. /// /// Not all servers support all metadata contexts. To learn if a context /// was actually negotiated, call [can_meta_context](Handle::can_meta_context) after /// connecting. /// /// The single parameter is the name of the metadata context, /// for example `LIBNBD_CONTEXT_BASE_ALLOCATION`. /// Elibnbd.h>> includes defined constants beginning with /// `LIBNBD_CONTEXT_` for some well-known contexts, but you are free /// to pass in other contexts. /// /// Other metadata contexts are server-specific, but include /// `"qemu:dirty-bitmap:..."` and `"qemu:allocation-depth"` for /// qemu-nbd (see qemu-nbd -B and -A options). pub fn add_meta_context(&self, name: impl Into>) -> Result<()> { // Convert all arguments to FFI-like types. let name_buf = CString::new(name.into()).map_err(|e| Error::from(e))?; let name_ffi = name_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_add_meta_context(self.data.handle.handle, name_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send block status command, with 32-bit callback /// /// Send the block status command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [block_status](Handle::block_status). /// /// This function is inherently limited to 32-bit values. If the /// server replies with a larger extent, the length of that extent /// will be truncated to just below 32 bits and any further extents /// from the server will be ignored. If the server replies with a /// status value larger than 32 bits (only possible when extended /// headers are in use), the callback function will be passed an /// `EOVERFLOW` error. To get the full extent information from a /// server that supports 64-bit extents, you must use /// [aio_block_status_64](Handle::aio_block_status_64). /// /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_block_status( &self, count: u64, offset: u64, extent: impl FnMut(&[u8], u64, &[u32], &mut c_int) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let extent_ffi = unsafe { crate::bindings::extent_to_raw(extent) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_block_status( self.data.handle.handle, count_ffi, offset_ffi, extent_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send block status command, with 64-bit callback /// /// Send the block status command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [block_status_64](Handle::block_status_64). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_block_status_64( &self, count: u64, offset: u64, extent64: impl FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let extent64_ffi = unsafe { crate::bindings::extent64_to_raw(extent64) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_block_status_64( self.data.handle.handle, count_ffi, offset_ffi, extent64_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send filtered block status command to the NBD server /// /// Send a filtered block status command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [block_status_filter](Handle::block_status_filter). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_block_status_filter( &self, count: u64, offset: u64, contexts: impl IntoIterator>, extent64: impl FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let contexts_ffi_c_strs: Vec = contexts .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut contexts_ffi_ptrs: Vec<*mut c_char> = contexts_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); contexts_ffi_ptrs.push(ptr::null_mut()); let contexts_ffi = contexts_ffi_ptrs.as_mut_ptr(); let extent64_ffi = unsafe { crate::bindings::extent64_to_raw(extent64) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_block_status_filter( self.data.handle.handle, count_ffi, offset_ffi, contexts_ffi, extent64_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send cache (prefetch) command to the NBD server /// /// Issue the cache (prefetch) command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [cache](Handle::cache). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_cache( &self, count: u64, offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_cache( self.data.handle.handle, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// check if the command completed /// /// Return true if the command completed. If this function returns /// true then the command was successful and it has been retired. /// Return false if the command is still in flight. This can also /// fail with an error in case the command failed (in this case /// the command is also retired). A command is retired either via /// this command, or by using a completion callback which returns `1`. /// /// The `cookie` parameter is the positive unique 64 bit cookie /// for the command, as returned by a call such as [aio_pread](Handle::aio_pread). pub fn aio_command_completed(&self, cookie: u64) -> Result { // Convert all arguments to FFI-like types. let cookie_ffi = cookie; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_command_completed(self.data.handle.handle, cookie_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// connect to the NBD server /// /// Begin connecting to the NBD server. The `addr` and `addrlen` /// parameters specify the address of the socket to connect to. /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect(&self, addr: SocketAddr) -> Result<()> { // Convert all arguments to FFI-like types. let addr_os = OsSocketAddr::from(addr); let addr_ffi = addr_os.as_ptr(); let addrlen_ffi = addr_os.len(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect(self.data.handle.handle, addr_ffi, addrlen_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to the NBD server /// /// Run the command as a subprocess and begin connecting to it over /// stdin/stdout. Parameters behave as documented in /// [connect_command](Handle::connect_command). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_command( &self, argv: impl IntoIterator>, ) -> Result<()> { // Convert all arguments to FFI-like types. let argv_ffi_c_strs: Vec = argv .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut argv_ffi_ptrs: Vec<*mut c_char> = argv_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); argv_ffi_ptrs.push(ptr::null_mut()); let argv_ffi = argv_ffi_ptrs.as_mut_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_command(self.data.handle.handle, argv_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect directly to a connected socket /// /// Begin connecting to the connected socket `fd`. /// Parameters behave as documented in [connect_socket](Handle::connect_socket). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_socket(&self, sock: OwnedFd) -> Result<()> { // Convert all arguments to FFI-like types. let sock_ffi = sock.as_raw_fd(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_socket(self.data.handle.handle, sock_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect using systemd socket activation /// /// Run the command as a subprocess and begin connecting to it using /// systemd socket activation. Parameters behave as documented in /// [connect_systemd_socket_activation](Handle::connect_systemd_socket_activation). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_systemd_socket_activation( &self, argv: impl IntoIterator>, ) -> Result<()> { // Convert all arguments to FFI-like types. let argv_ffi_c_strs: Vec = argv .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut argv_ffi_ptrs: Vec<*mut c_char> = argv_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); argv_ffi_ptrs.push(ptr::null_mut()); let argv_ffi = argv_ffi_ptrs.as_mut_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_systemd_socket_activation( self.data.handle.handle, argv_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to the NBD server over a TCP port /// /// Begin connecting to the NBD server listening on `hostname:port`. /// Parameters behave as documented in [connect_tcp](Handle::connect_tcp). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_tcp( &self, hostname: impl Into>, port: impl Into>, ) -> Result<()> { // Convert all arguments to FFI-like types. let hostname_buf = CString::new(hostname.into()).map_err(|e| Error::from(e))?; let hostname_ffi = hostname_buf.as_ptr(); let port_buf = CString::new(port.into()).map_err(|e| Error::from(e))?; let port_ffi = port_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_tcp( self.data.handle.handle, hostname_ffi, port_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to the NBD server over a Unix domain socket /// /// Begin connecting to the NBD server over Unix domain socket /// (`unixsocket`). Parameters behave as documented in /// [connect_unix](Handle::connect_unix). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_unix( &self, unixsocket: impl Into, ) -> Result<()> { // Convert all arguments to FFI-like types. let unixsocket_buf = CString::new(unixsocket.into().into_os_string().into_vec()) .map_err(|e| Error::from(e))?; let unixsocket_ffi = unixsocket_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_unix(self.data.handle.handle, unixsocket_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to an NBD URI /// /// Begin connecting to the NBD URI `uri`. Parameters behave as /// documented in [connect_uri](Handle::connect_uri). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_uri(&self, uri: impl Into>) -> Result<()> { // Convert all arguments to FFI-like types. let uri_buf = CString::new(uri.into()).map_err(|e| Error::from(e))?; let uri_ffi = uri_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_uri(self.data.handle.handle, uri_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to the NBD server over AF_VSOCK socket /// /// Begin connecting to the NBD server over the `AF_VSOCK` /// protocol to the server `cid:port`. Parameters behave as documented in /// [connect_vsock](Handle::connect_vsock). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_vsock(&self, cid: u32, port: u32) -> Result<()> { // Convert all arguments to FFI-like types. let cid_ffi = cid; let port_ffi = port; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_vsock( self.data.handle.handle, cid_ffi, port_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// disconnect from the NBD server /// /// Issue the disconnect command to the NBD server. This is /// not a normal command because NBD servers are not obliged /// to send a reply. Instead you should wait for /// [aio_is_closed](Handle::aio_is_closed) to become true on the connection. Once this /// command is issued, you cannot issue any further commands. /// /// Although libnbd does not prevent you from issuing this command while /// still waiting on the replies to previous commands, the NBD protocol /// recommends that you wait until there are no other commands in flight /// (see [aio_in_flight](Handle::aio_in_flight)), to give the server a better chance at a /// clean shutdown. /// /// The `flags` parameter must be `0` for now (it exists for future NBD /// protocol extensions). There is no direct synchronous counterpart; /// however, [shutdown](Handle::shutdown) will call this function if appropriate. pub fn aio_disconnect(&self, flags: Option) -> Result<()> { // Convert all arguments to FFI-like types. let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_disconnect(self.data.handle.handle, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send flush command to the NBD server /// /// Issue the flush command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [flush](Handle::flush). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_flush( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_flush( self.data.handle.handle, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// check how many aio commands are still in flight /// /// Return the number of in-flight aio commands that are still awaiting a /// response from the server before they can be retired. If this returns /// a non-zero value when requesting a disconnect from the server (see /// [aio_disconnect](Handle::aio_disconnect) and [shutdown](Handle::shutdown)), libnbd does not try to /// wait for those commands to complete gracefully; if the server strands /// commands while shutting down, [aio_command_completed](Handle::aio_command_completed) will report /// those commands as failed with a status of `ENOTCONN`. pub fn aio_in_flight(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_in_flight(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// check if the connection is closed /// /// Return true if the connection has closed. There is no way to /// reconnect a closed connection. Instead you must close the /// whole handle. pub fn aio_is_closed(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_closed(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection is connecting or handshaking /// /// Return true if this connection is connecting to the server /// or in the process of handshaking and negotiating options /// which happens before the handle becomes ready to /// issue commands (see [aio_is_ready](Handle::aio_is_ready)). pub fn aio_is_connecting(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_connecting(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection has just been created /// /// Return true if this connection has just been created. This /// is the state before the handle has started connecting to a /// server. In this state the handle can start to be connected /// by calling functions such as [aio_connect](Handle::aio_connect). pub fn aio_is_created(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_created(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection is dead /// /// Return true if the connection has encountered a fatal /// error and is dead. In this state the handle may only be closed. /// There is no way to recover a handle from the dead state. pub fn aio_is_dead(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_dead(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if connection is ready to send handshake option /// /// Return true if this connection is ready to start another option /// negotiation command while handshaking with the server. An option /// command will move back to the connecting state (see /// [aio_is_connecting](Handle::aio_is_connecting)). Note that this state cannot be /// reached unless requested by [set_opt_mode](Handle::set_opt_mode), and even then /// it only works with newstyle servers; an oldstyle server will skip /// straight to [aio_is_ready](Handle::aio_is_ready). pub fn aio_is_negotiating(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_negotiating(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection is processing a command /// /// Return true if this connection is connected to the NBD server, /// the handshake has completed, and the connection is processing /// commands (either writing out a request or reading a reply). /// /// Note the ready state ([aio_is_ready](Handle::aio_is_ready)) is not included. /// In the ready state commands may be in flight (the server /// is processing them), but libnbd is not processing them. pub fn aio_is_processing(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_processing(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection is in the ready state /// /// Return true if this connection is connected to the NBD server, /// the handshake has completed, and the connection is idle or /// waiting for a reply. In this state the handle is ready to /// issue commands. pub fn aio_is_ready(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_ready(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// end negotiation and close the connection /// /// Request that the server finish negotiation, gracefully if possible, then /// close the connection. This can only be used if [set_opt_mode](Handle::set_opt_mode) /// enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. pub fn aio_opt_abort(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_abort(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server to enable extended headers /// /// Request that the server use extended headers, by sending /// `NBD_OPT_EXTENDED_HEADERS`. This behaves like the synchronous /// counterpart [opt_extended_headers](Handle::opt_extended_headers), except that it does /// not wait for the server's response. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_extended_headers( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_extended_headers( self.data.handle.handle, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// end negotiation and move on to using an export /// /// Request that the server finish negotiation and move on to serving the /// export previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that directly detecting /// whether the server returns an error (as is done by the return value /// of the synchronous counterpart) is only possible with a completion /// callback; however it is also possible to indirectly detect an error /// when [aio_is_negotiating](Handle::aio_is_negotiating) returns true. pub fn aio_opt_go( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_go(self.data.handle.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server for information about an export /// /// Request that the server supply information about the export name /// previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_info( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_info(self.data.handle.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server to list all exports during negotiation /// /// Request that the server list all exports that it supports. This can /// only be used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_list( &self, list: impl FnMut(&[u8], &[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let list_ffi = unsafe { crate::bindings::list_to_raw(list) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_list( self.data.handle.handle, list_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request list of available meta contexts, using implicit query /// /// Request that the server list available meta contexts associated with /// the export previously specified by the most recent /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri), and with a /// list of queries from prior calls to [add_meta_context](Handle::add_meta_context) /// (see [aio_opt_list_meta_context_queries](Handle::aio_opt_list_meta_context_queries) if you want to /// supply an explicit query list instead). This can only be /// used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_list_meta_context( &self, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result { // Convert all arguments to FFI-like types. let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_list_meta_context( self.data.handle.handle, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// request list of available meta contexts, using explicit query /// /// Request that the server list available meta contexts associated with /// the export previously specified by the most recent /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri), and with an /// explicit list of queries provided as a parameter (see /// [aio_opt_list_meta_context](Handle::aio_opt_list_meta_context) if you want to reuse an /// implicit query list instead). This can only be /// used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_list_meta_context_queries( &self, queries: impl IntoIterator>, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result { // Convert all arguments to FFI-like types. let queries_ffi_c_strs: Vec = queries .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut queries_ffi_ptrs: Vec<*mut c_char> = queries_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); queries_ffi_ptrs.push(ptr::null_mut()); let queries_ffi = queries_ffi_ptrs.as_mut_ptr(); let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_list_meta_context_queries( self.data.handle.handle, queries_ffi, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// select specific meta contexts, with implicit query list /// /// Request that the server supply all recognized meta contexts /// registered through prior calls to [add_meta_context](Handle::add_meta_context), in /// conjunction with the export previously specified by the most /// recent [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri). /// This can only be used if [set_opt_mode](Handle::set_opt_mode) enabled option /// mode. Normally, this function is redundant, as [opt_go](Handle::opt_go) /// automatically does the same task if structured replies or /// extended headers have already been negotiated. But manual /// control over meta context requests can be useful for fine-grained /// testing of how a server handles unusual negotiation sequences. /// Often, use of this function is coupled with /// [set_request_meta_context](Handle::set_request_meta_context) to bypass the automatic /// context request normally performed by [opt_go](Handle::opt_go). /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_set_meta_context( &self, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result { // Convert all arguments to FFI-like types. let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_set_meta_context( self.data.handle.handle, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// select specific meta contexts, with explicit query list /// /// Request that the server supply all recognized meta contexts /// passed in through `queries`, in conjunction with the export /// previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used /// if [set_opt_mode](Handle::set_opt_mode) enabled option mode. Normally, this /// function is redundant, as [opt_go](Handle::opt_go) automatically does /// the same task if structured replies or extended headers have /// already been negotiated. But manual control over meta context /// requests can be useful for fine-grained testing of how a server /// handles unusual negotiation sequences. Often, use of this /// function is coupled with [set_request_meta_context](Handle::set_request_meta_context) to /// bypass the automatic context request normally performed by /// [opt_go](Handle::opt_go). /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_set_meta_context_queries( &self, queries: impl IntoIterator>, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result { // Convert all arguments to FFI-like types. let queries_ffi_c_strs: Vec = queries .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut queries_ffi_ptrs: Vec<*mut c_char> = queries_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); queries_ffi_ptrs.push(ptr::null_mut()); let queries_ffi = queries_ffi_ptrs.as_mut_ptr(); let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_set_meta_context_queries( self.data.handle.handle, queries_ffi, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// request the server to initiate TLS /// /// Request that the server initiate a secure TLS connection, by /// sending `NBD_OPT_STARTTLS`. This behaves like the synchronous /// counterpart [opt_starttls](Handle::opt_starttls), except that it does /// not wait for the server's response. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_starttls( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_starttls(self.data.handle.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server to enable structured replies /// /// Request that the server use structured replies, by sending /// `NBD_OPT_STRUCTURED_REPLY`. This behaves like the synchronous /// counterpart [opt_structured_reply](Handle::opt_structured_reply), except that it does /// not wait for the server's response. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_structured_reply( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_structured_reply( self.data.handle.handle, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// check if any command has completed /// /// Return the unique positive 64 bit cookie of the first non-retired but /// completed command, `0` if there are in-flight commands but none of /// them are awaiting retirement, or `-1` on error including when there /// are no in-flight commands. Any cookie returned by this function must /// still be passed to [aio_command_completed](Handle::aio_command_completed) to actually retire /// the command and learn whether the command was successful. pub fn aio_peek_command_completed(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_peek_command_completed(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// read from the NBD server /// /// Issue a read command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Note that you must ensure `buf` is valid until the command has /// completed. Furthermore, if the `error` parameter to /// `completion_callback` is set or if [aio_command_completed](Handle::aio_command_completed) /// reports failure, and if [get_pread_initialize](Handle::get_pread_initialize) returns true, /// then libnbd sanitized `buf`, but it is unspecified whether the /// contents of `buf` will read as zero or as partial results from the /// server. If [get_pread_initialize](Handle::get_pread_initialize) returns false, then /// libnbd did not sanitize `buf`, and the contents are undefined /// on failure. /// /// Other parameters behave as documented in [pread](Handle::pread). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_pread( &self, buf: &mut [u8], offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_mut_ptr() as *mut c_void; let count_ffi = buf.len(); let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_pread( self.data.handle.handle, buf_ffi, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// read from the NBD server /// /// Issue a read command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Note that you must ensure `buf` is valid until the command has /// completed. Furthermore, if the `error` parameter to /// `completion_callback` is set or if [aio_command_completed](Handle::aio_command_completed) /// reports failure, and if [get_pread_initialize](Handle::get_pread_initialize) returns true, /// then libnbd sanitized `buf`, but it is unspecified whether the /// contents of `buf` will read as zero or as partial results from the /// server. If [get_pread_initialize](Handle::get_pread_initialize) returns false, then /// libnbd did not sanitize `buf`, and the contents are undefined /// on failure. /// /// Other parameters behave as documented in [pread_structured](Handle::pread_structured). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_pread_structured( &self, buf: &mut [u8], offset: u64, chunk: impl FnMut(&[u8], u64, c_uint, &mut c_int) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_mut_ptr() as *mut c_void; let count_ffi = buf.len(); let offset_ffi = offset; let chunk_ffi = unsafe { crate::bindings::chunk_to_raw(chunk) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_pread_structured( self.data.handle.handle, buf_ffi, count_ffi, offset_ffi, chunk_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// write to the NBD server /// /// Issue a write command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Note that you must ensure `buf` is valid until the command has /// completed. Other parameters behave as documented in [pwrite](Handle::pwrite). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_pwrite( &self, buf: &[u8], offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_ptr() as *const c_void; let count_ffi = buf.len(); let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_pwrite( self.data.handle.handle, buf_ffi, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send trim command to the NBD server /// /// Issue a trim command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [trim](Handle::trim). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_trim( &self, count: u64, offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_trim( self.data.handle.handle, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send write zeroes command to the NBD server /// /// Issue a write zeroes command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [zero](Handle::zero). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_zero( &self, count: u64, offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_zero( self.data.handle.handle, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// does the server support the block status payload flag? /// /// Returns true if the server supports the use of the /// `LIBNBD_CMD_FLAG_PAYLOAD_LEN` flag to allow filtering of the /// block status command (see [block_status_filter](Handle::block_status_filter)). Returns /// false if the server does not. Note that this will never return /// true if [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated) is false. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_block_status_payload(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_block_status_payload(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the cache command? /// /// Returns true if the server supports the cache command /// (see [cache](Handle::cache), [aio_cache](Handle::aio_cache)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_cache(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_cache(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the don't fragment flag to pread? /// /// Returns true if the server supports structured reads with an /// ability to request a non-fragmented read (see [pread_structured](Handle::pread_structured), /// [aio_pread_structured](Handle::aio_pread_structured)). Returns false if the server either lacks /// structured reads or if it does not support a non-fragmented read request. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_df(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_df(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the fast zero flag? /// /// Returns true if the server supports the use of the /// `LIBNBD_CMD_FLAG_FAST_ZERO` flag to the zero command /// (see [zero](Handle::zero), [aio_zero](Handle::aio_zero)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_fast_zero(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_fast_zero(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the flush command? /// /// Returns true if the server supports the flush command /// (see [flush](Handle::flush), [aio_flush](Handle::aio_flush)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_flush(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_flush(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the FUA flag? /// /// Returns true if the server supports the FUA flag on /// certain commands (see [pwrite](Handle::pwrite)). /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_fua(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_fua(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support a specific meta context? /// /// Returns true if the server supports the given meta context /// (see [add_meta_context](Handle::add_meta_context)). Returns false if /// the server does not. It is possible for this command to fail if /// meta contexts were requested but there is a missing or failed /// attempt at NBD_OPT_SET_META_CONTEXT during option negotiation. /// /// If the server supports block status filtering (see /// [can_block_status_payload](Handle::can_block_status_payload), this function must return /// true for any filter name passed to [block_status_filter](Handle::block_status_filter). /// /// The single parameter is the name of the metadata context, /// for example `LIBNBD_CONTEXT_BASE_ALLOCATION`. /// Elibnbd.h>> includes defined constants for well-known /// namespace contexts beginning with `LIBNBD_CONTEXT_`, but you /// are free to pass in other contexts. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_meta_context( &self, metacontext: impl Into>, ) -> Result { // Convert all arguments to FFI-like types. let metacontext_buf = CString::new(metacontext.into()).map_err(|e| Error::from(e))?; let metacontext_ffi = metacontext_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_meta_context(self.data.handle.handle, metacontext_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support multi-conn? /// /// Returns true if the server supports multi-conn. Returns /// false if the server does not. /// /// It is not safe to open multiple handles connecting to the /// same server if you will write to the server and the /// server does not advertise multi-conn support. The safe /// way to check for this is to open one connection, check /// this flag is true, then open further connections as /// required. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_multi_conn(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_multi_conn(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the trim command? /// /// Returns true if the server supports the trim command /// (see [trim](Handle::trim), [aio_trim](Handle::aio_trim)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_trim(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_trim(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the zero command? /// /// Returns true if the server supports the zero command /// (see [zero](Handle::zero), [aio_zero](Handle::aio_zero)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_zero(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_zero(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// reset the list of requested meta contexts /// /// During connection libnbd can negotiate zero or more metadata /// contexts with the server. Metadata contexts are features (such /// as `"base:allocation"`) which describe information returned /// by the [block_status_64](Handle::block_status_64) command (for `"base:allocation"` /// this is whether blocks of data are allocated, zero or sparse). /// /// This command resets the list of meta contexts to request back to /// an empty list, for re-population by further use of /// [add_meta_context](Handle::add_meta_context). It is primarily useful when option /// negotiation mode is selected (see [set_opt_mode](Handle::set_opt_mode)), for /// altering the list of attempted contexts between subsequent export /// queries. pub fn clear_meta_contexts(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_clear_meta_contexts(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// return string describing the state of the connection /// /// Returns a descriptive string for the state of the connection. This /// can be used for debugging or troubleshooting, but you should not /// rely on the state of connections since it may change in future /// versions. pub fn connection_state(&self) -> Result<&'static [u8]> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_connection_state(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(unsafe { CStr::from_ptr(ffi_ret) }.to_bytes()) } } /// return a specific server block size constraint /// /// Returns a specific block size constraint advertised by the server. /// If zero is returned it means the server did not advertise a constraint. /// /// Constraints are hints. Servers differ in their behaviour as to /// whether they enforce constraints or not. /// /// The `size_type` parameter selects which constraint to read. /// It can be one of: /// /// /// - `LIBNBD_SIZE_MINIMUM` = 0 /// /// If non-zero, this will be a power of 2 between 1 and 64k; any client /// request that is not aligned in length or offset to this size is likely /// to fail with `EINVAL`. The image size will generally also be a /// multiple of this value (if not, the final few bytes are inaccessible /// while obeying alignment constraints). /// /// If zero (meaning no information was returned by the server), it is /// safest to assume a minimum block size of 512, although many servers /// support a minimum block size of 1. /// /// If the server provides a constraint, then libnbd defaults to honoring /// that constraint client-side unless `LIBNBD_STRICT_ALIGN` is cleared /// in `nbd_set_strict_mode(3)`. /// /// - `LIBNBD_SIZE_PREFERRED` = 1 /// /// If non-zero, this is a power of 2 representing the preferred size for /// efficient I/O. Smaller requests may incur overhead such as /// read-modify-write cycles that will not be present when using I/O that /// is a multiple of this value. This value may be larger than the size /// of the export. /// /// If zero (meaning no information was returned by the server), using 4k /// as a preferred block size tends to give decent performance. /// /// - `LIBNBD_SIZE_MAXIMUM` = 2 /// /// If non-zero, this represents the maximum length that the server is /// willing to handle during [pread](Handle::pread) or [pwrite](Handle::pwrite). Other /// functions like [zero](Handle::zero) may still be able to use larger sizes. /// Note that this function returns what the server advertised, but libnbd /// itself imposes a maximum of 64M. /// /// If zero (meaning no information was returned by the server), some NBD /// servers will abruptly disconnect if a transaction sends or receives /// more than 32M of data. /// /// - `LIBNBD_SIZE_PAYLOAD` = 3 /// /// This value is not advertised by the server, but rather represents /// the maximum outgoing payload size for a given connection that /// libnbd will enforce unless `LIBNBD_STRICT_PAYLOAD` is cleared /// in `nbd_set_strict_mode(3)`. It is always non-zero: never /// smaller than 1M, never larger than 64M, and matches /// `LIBNBD_SIZE_MAXIMUM` when possible. /// /// /// Future NBD extensions may result in additional `size_type` values. /// Note that by default, libnbd requests all available block sizes, /// but that a server may differ in what sizes it chooses to report /// if [set_request_block_size](Handle::set_request_block_size) alters whether the client /// requests sizes. /// /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn get_block_size(&self, size_type: Size) -> Result { // Convert all arguments to FFI-like types. let size_type_ffi = size_type as c_int; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_block_size(self.data.handle.handle, size_type_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// return the canonical export name, if the server has one /// /// The NBD protocol permits a server to report an optional canonical /// export name, which may differ from the client's request (as set by /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri)). This function /// accesses any name returned by the server; it may be the same as /// the client request, but is more likely to differ when the client /// requested a connection to the default export name (an empty string /// `""`). /// /// Some servers are unlikely to report a canonical name unless the /// client specifically hinted about wanting it, via [set_full_info](Handle::set_full_info). pub fn get_canonical_export_name(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_canonical_export_name(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// return the export description, if the server has one /// /// The NBD protocol permits a server to report an optional export /// description. This function reports any description returned by /// the server. /// /// Some servers are unlikely to report a description unless the /// client specifically hinted about wanting it, via [set_full_info](Handle::set_full_info). /// For qemu-nbd(8), a description is set with -D. pub fn get_export_description(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_export_description(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// get the export name /// /// Get the export name associated with the handle. This is the name /// that libnbd requests; see [get_canonical_export_name](Handle::get_canonical_export_name) for /// determining if the server has a different canonical name for the /// given export (most common when requesting the default export name /// of an empty string `""`) pub fn get_export_name(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_export_name(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// see if extended headers are in use /// /// After connecting you may call this to find out if the connection is /// using extended headers. Note that this setting is sticky; this /// can return true even after a second [opt_extended_headers](Handle::opt_extended_headers) /// returns false because the server detected a duplicate request. /// /// When extended headers are not in use, commands are limited to a /// 32-bit length, even when the libnbd API uses a 64-bit parameter /// to express the length. But even when extended headers are /// supported, the server may enforce other limits, visible through /// [get_block_size](Handle::get_block_size). /// /// Note that when extended headers are negotiated, you should /// prefer the use of [block_status_64](Handle::block_status_64) instead of /// [block_status](Handle::block_status) if any of the meta contexts you requested /// via [add_meta_context](Handle::add_meta_context) might return 64-bit status /// values; however, all of the well-known meta contexts covered /// by current `LIBNBD_CONTEXT_*` constants only return 32-bit /// status. pub fn get_extended_headers_negotiated(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_extended_headers_negotiated(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// see if NBD_OPT_GO requests extra details /// /// Return the state of the full info request flag on this handle. pub fn get_full_info(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_full_info(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// get the handle name /// /// Get the name of the handle. If it was previously set by calling /// [set_handle_name](Handle::set_handle_name) then this returns the name that was set. /// Otherwise it will return a generic name like `"nbd1"`, /// `"nbd2"`, etc. pub fn get_handle_name(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_handle_name(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// see which handshake flags are supported /// /// Return the state of the handshake flags on this handle. When the /// handle has not yet completed a connection (see [aio_is_created](Handle::aio_is_created)), /// this returns the flags that the client is willing to use, provided /// the server also advertises those flags. After the connection is /// ready (see [aio_is_ready](Handle::aio_is_ready)), this returns the flags that were /// actually agreed on between the server and client. If the NBD /// protocol defines new handshake flags, then the return value from /// a newer library version may include bits that were undefined at /// the time of compilation. pub fn get_handshake_flags(&self) -> HandshakeFlag { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_handshake_flags(self.data.handle.handle) }; // Convert the result to something more rusty. HandshakeFlag::from_bits(ffi_ret).unwrap() } /// return the i'th meta context request /// /// During connection libnbd can negotiate zero or more metadata /// contexts with the server. Metadata contexts are features (such /// as `"base:allocation"`) which describe information returned /// by the [block_status_64](Handle::block_status_64) command (for `"base:allocation"` /// this is whether blocks of data are allocated, zero or sparse). /// /// This command returns the i'th meta context request, as added by /// [add_meta_context](Handle::add_meta_context), and bounded by /// [get_nr_meta_contexts](Handle::get_nr_meta_contexts). pub fn get_meta_context(&self, i: usize) -> Result> { // Convert all arguments to FFI-like types. let i_ffi = i; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_meta_context(self.data.handle.handle, i_ffi) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// return the current number of requested meta contexts /// /// During connection libnbd can negotiate zero or more metadata /// contexts with the server. Metadata contexts are features (such /// as `"base:allocation"`) which describe information returned /// by the [block_status_64](Handle::block_status_64) command (for `"base:allocation"` /// this is whether blocks of data are allocated, zero or sparse). /// /// This command returns how many meta contexts have been added to /// the list to request from the server via [add_meta_context](Handle::add_meta_context). /// The server is not obligated to honor all of the requests; to see /// what it actually supports, see [can_meta_context](Handle::can_meta_context). pub fn get_nr_meta_contexts(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_nr_meta_contexts(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// return whether option mode was enabled /// /// Return true if option negotiation mode was enabled on this handle. pub fn get_opt_mode(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_opt_mode(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// return the name of the library /// /// Returns the name of the library, always `"libnbd"` unless /// the library was modified with another name at compile time. pub fn get_package_name(&self) -> &'static [u8] { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_package_name(self.data.handle.handle) }; // Convert the result to something more rusty. unsafe { CStr::from_ptr(ffi_ret) }.to_bytes() } /// see whether libnbd pre-initializes read buffers /// /// Return whether libnbd performs a pre-initialization of a buffer passed /// to [pread](Handle::pread) and similar to all zeroes, as set by /// [set_pread_initialize](Handle::set_pread_initialize). pub fn get_pread_initialize(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_pread_initialize(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// get the per-handle private data /// /// Return the value of the private data field set previously /// by a call to [set_private_data](Handle::set_private_data) /// (or 0 if it was not previously set). pub fn get_private_data(&self) -> usize { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_private_data(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret as usize } /// return the NBD protocol variant /// /// Return the NBD protocol variant in use on the connection. At /// the moment this returns one of the strings `"oldstyle"`, /// `"newstyle"` or `"newstyle-fixed"`. Other strings might /// be returned in the future. /// Most modern NBD servers use `"newstyle-fixed"`. /// /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn get_protocol(&self) -> Result<&'static [u8]> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_protocol(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(unsafe { CStr::from_ptr(ffi_ret) }.to_bytes()) } } /// see if NBD_OPT_GO requests block size /// /// Return the state of the block size request flag on this handle. pub fn get_request_block_size(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_request_block_size(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// see if extended headers are attempted /// /// Return the state of the request extended headers flag on this /// handle. /// /// Note: If you want to find out if extended headers were actually /// negotiated on a particular connection use /// [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated) instead. pub fn get_request_extended_headers(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_request_extended_headers(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// see if connect automatically requests meta contexts /// /// Return the state of the automatic meta context request flag on this handle. pub fn get_request_meta_context(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_request_meta_context(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// see if structured replies are attempted /// /// Return the state of the request structured replies flag on this /// handle. /// /// Note: If you want to find out if structured replies were actually /// negotiated on a particular connection use /// [get_structured_replies_negotiated](Handle::get_structured_replies_negotiated) instead. pub fn get_request_structured_replies(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_request_structured_replies(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// return the export size /// /// Returns the size in bytes of the NBD export. /// /// Note that this call fails with `EOVERFLOW` for an unlikely /// server that advertises a size which cannot fit in a 64-bit /// signed integer. /// /// nbdinfo(1) --size option is a way to access this API /// from shell scripts. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn get_size(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_size(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// get the socket activation name /// /// Return the socket name used when you call /// [connect_systemd_socket_activation](Handle::connect_systemd_socket_activation) on the same /// handle. By default this will return the empty string /// meaning that the server will see the name `unknown`. pub fn get_socket_activation_name(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_socket_activation_name(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// see which strictness flags are in effect /// /// Return flags indicating which protocol strictness items are being /// enforced locally by libnbd rather than the server. The return value /// from a newer library version may include bits that were undefined at /// the time of compilation. pub fn get_strict_mode(&self) -> Strict { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_strict_mode(self.data.handle.handle) }; // Convert the result to something more rusty. Strict::from_bits(ffi_ret).unwrap() } /// see if structured replies are in use /// /// After connecting you may call this to find out if the connection is /// using structured replies. Note that this setting is sticky; this /// can return true even after a second [opt_structured_reply](Handle::opt_structured_reply) /// returns false because the server detected a duplicate request. /// /// Note that if the connection negotiates extended headers, this /// function returns true (as extended headers imply structured /// replies) even if no explicit request for structured replies was /// attempted. pub fn get_structured_replies_negotiated(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_structured_replies_negotiated(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// get the TLS request setting /// /// Get the TLS request setting. /// /// Note: If you want to find out if TLS was actually negotiated /// on a particular connection use [get_tls_negotiated](Handle::get_tls_negotiated) instead. pub fn get_tls(&self) -> Tls { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_tls(self.data.handle.handle) }; // Convert the result to something more rusty. unsafe { mem::transmute::(ffi_ret as isize) } } /// find out if TLS was negotiated on a connection /// /// After connecting you may call this to find out if the /// connection is using TLS. /// /// This is normally useful only if you set the TLS request mode /// to `LIBNBD_TLS_ALLOW` (see [set_tls](Handle::set_tls)), because in this /// mode we try to use TLS but fall back to unencrypted if it was /// not available. This function will tell you if TLS was /// negotiated or not. /// /// In `LIBNBD_TLS_REQUIRE` mode (the most secure) the connection /// would have failed if TLS could not be negotiated. With /// `LIBNBD_TLS_DISABLE` mode, TLS is not tried automatically; /// but if the NBD server uses the less-common `SELECTIVETLS` /// mode, this function reports whether a manual [opt_starttls](Handle::opt_starttls) /// enabled TLS or if the connection is still plaintext. pub fn get_tls_negotiated(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_tls_negotiated(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// get the current TLS username /// /// Get the current TLS username. pub fn get_tls_username(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_tls_username(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// get whether we verify the identity of the server /// /// Get the verify peer flag. pub fn get_tls_verify_peer(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_tls_verify_peer(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// construct an NBD URI for a connection /// /// This makes a best effort attempt to construct an NBD URI which /// could be used to connect back to the same server (using /// [connect_uri](Handle::connect_uri)). /// /// In some cases there is not enough information in the handle /// to successfully create a URI (eg. if you connected with /// [connect_socket](Handle::connect_socket)). In such cases the call returns /// `NULL` and further diagnostic information is available /// via `get_errno` and `get_error` as usual. /// /// Even if a URI is returned it is not guaranteed to work, and /// it may not be optimal. /// /// nbdinfo(1) --uri option is a way to access this API /// from shell scripts. pub fn get_uri(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_uri(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// return the version of the library /// /// Return the version of libnbd. This is returned as a string /// in the form `"major.minor.release"` where each of major, minor /// and release is a small positive integer. For example: /// /// ```text /// minor /// ↓ /// "1.0.3" /// ↑ ↑ /// major release /// ``` /// /// /// - major = 0 /// /// The major number was `0` for the early experimental versions of /// libnbd where we still had an unstable API. /// /// - major = 1 /// /// The major number is `1` for the versions of libnbd with a /// long-term stable API and ABI. It is not anticipated that /// major will be any number other than `1`. /// /// - minor = 0, 2, ... (even) /// /// The minor number is even for stable releases. /// /// - minor = 1, 3, ... (odd) /// /// The minor number is odd for development versions. Note that /// new APIs added in a development version remain experimental /// and subject to change in that branch until they appear in a stable /// release. /// /// - release /// /// The release number is incremented for each release along a particular /// branch. /// pub fn get_version(&self) -> &'static [u8] { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_version(self.data.handle.handle) }; // Convert the result to something more rusty. unsafe { CStr::from_ptr(ffi_ret) }.to_bytes() } /// is the NBD export read-only? /// /// Returns true if the NBD export is read-only; writes and /// write-like operations will fail. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn is_read_only(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_is_read_only(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// is the NBD disk rotational (like a disk)? /// /// Returns true if the disk exposed over NBD is rotational /// (like a traditional floppy or hard disk). Returns false if /// the disk has no penalty for random access (like an SSD or /// RAM disk). /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn is_rotational(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_is_rotational(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// kill server running as a subprocess /// /// This call may be used to kill the server running as a subprocess /// that was previously created using [connect_command](Handle::connect_command). You /// do not need to use this call. It is only needed if the server /// does not exit when the socket is closed. /// /// The `signum` parameter is the optional signal number to send /// (see signal(7)). If `signum` is `0` then `SIGTERM` is sent. pub fn kill_subprocess(&self, signum: c_int) -> Result<()> { // Convert all arguments to FFI-like types. let signum_ffi = signum; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_kill_subprocess(self.data.handle.handle, signum_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the export name /// /// For servers which require an export name or can serve different /// content on different exports, set the `export_name` to /// connect to. The default is the empty string `""`. /// /// This is only relevant when connecting to servers using the /// newstyle protocol as the oldstyle protocol did not support /// export names. The NBD protocol limits export names to /// 4096 bytes, but servers may not support the full length. /// The encoding of export names is always UTF-8. /// /// When option mode is not in use, the export name must be set /// before beginning a connection. However, when [set_opt_mode](Handle::set_opt_mode) /// has enabled option mode, it is possible to change the export /// name prior to [opt_go](Handle::opt_go). In particular, the use of /// [opt_list](Handle::opt_list) during negotiation can be used to determine /// a name the server is likely to accept, and [opt_info](Handle::opt_info) can /// be used to learn details about an export before connecting. /// /// This call may be skipped if using [connect_uri](Handle::connect_uri) to connect /// to a URI that includes an export name. pub fn set_export_name( &self, export_name: impl Into>, ) -> Result<()> { // Convert all arguments to FFI-like types. let export_name_buf = CString::new(export_name.into()).map_err(|e| Error::from(e))?; let export_name_ffi = export_name_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_export_name(self.data.handle.handle, export_name_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// control whether NBD_OPT_GO requests extra details /// /// By default, when connecting to an export, libnbd only requests the /// details it needs to service data operations. The NBD protocol says /// that a server can supply optional information, such as a canonical /// name of the export (see [get_canonical_export_name](Handle::get_canonical_export_name)) or /// a description of the export (see [get_export_description](Handle::get_export_description)), /// but that a hint from the client makes it more likely for this /// extra information to be provided. This function controls whether /// libnbd will provide that hint. /// /// Note that even when full info is requested, the server is not /// obligated to reply with all information that libnbd requested. /// Similarly, libnbd will ignore any optional server information that /// libnbd has not yet been taught to recognize. Furthermore, the /// hint to request block sizes is independently controlled via /// [set_request_block_size](Handle::set_request_block_size). pub fn set_full_info(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_full_info(self.data.handle.handle, request_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the handle name /// /// Handles have a name which is unique within the current process. /// The handle name is used in debug output. /// /// Handle names are normally generated automatically and have the /// form `"nbd1"`, `"nbd2"`, etc., but you can optionally use /// this call to give the handles a name which is meaningful for /// your application to make debugging output easier to understand. pub fn set_handle_name( &self, handle_name: impl Into>, ) -> Result<()> { // Convert all arguments to FFI-like types. let handle_name_buf = CString::new(handle_name.into()).map_err(|e| Error::from(e))?; let handle_name_ffi = handle_name_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_handle_name(self.data.handle.handle, handle_name_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// control use of handshake flags /// /// By default, libnbd tries to negotiate all possible handshake flags /// that are also supported by the server, since omitting a handshake /// flag can prevent the use of other functionality such as TLS encryption /// or structured replies. However, for integration testing, it can be /// useful to reduce the set of flags supported by the client to test that /// a particular server can handle various clients that were compliant to /// older versions of the NBD specification. /// /// The `flags` argument is a bitmask, including zero or more of the /// following handshake flags: /// /// /// - `LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE` = 1 /// /// The server gracefully handles unknown option requests from the /// client, rather than disconnecting. Without this flag, a client /// cannot safely request to use extensions such as TLS encryption or /// structured replies, as the request may cause an older server to /// drop the connection. /// /// - `LIBNBD_HANDSHAKE_FLAG_NO_ZEROES` = 2 /// /// If the client is forced to use `NBD_OPT_EXPORT_NAME` instead of /// the preferred `NBD_OPT_GO`, this flag allows the server to send /// fewer all-zero padding bytes over the connection. /// /// /// For convenience, the constant `LIBNBD_HANDSHAKE_FLAG_MASK` is /// available to describe all flags supported by this build of libnbd. /// Future NBD extensions may add further flags, which in turn may /// be enabled by default in newer libnbd. As such, when attempting /// to disable only one specific bit, it is wiser to first call /// [get_handshake_flags](Handle::get_handshake_flags) and modify that value, rather than /// blindly setting a constant value. pub fn set_handshake_flags(&self, flags: HandshakeFlag) -> Result<()> { // Convert all arguments to FFI-like types. let flags_ffi = flags.bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_handshake_flags(self.data.handle.handle, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// control option mode, for pausing during option negotiation /// /// Set this flag to true in order to request that a connection command /// `nbd_connect_*` will pause for negotiation options rather than /// proceeding all the way to the ready state, when communicating with a /// newstyle server. This setting has no effect when connecting to an /// oldstyle server. /// /// Note that libnbd defaults to attempting `NBD_OPT_STARTTLS`, /// `NBD_OPT_EXTENDED_HEADERS`, and `NBD_OPT_STRUCTURED_REPLY` /// before letting you control remaining negotiation steps; if you /// need control over these steps as well, first set [set_tls](Handle::set_tls) /// to `LIBNBD_TLS_DISABLE`, and [set_request_extended_headers](Handle::set_request_extended_headers) /// or [set_request_structured_replies](Handle::set_request_structured_replies) to false, before /// starting the connection attempt. /// /// When option mode is enabled, you have fine-grained control over which /// options are negotiated, compared to the default of the server /// negotiating everything on your behalf using settings made before /// starting the connection. To leave the mode and proceed on to the /// ready state, you must use [opt_go](Handle::opt_go) successfully; a failed /// [opt_go](Handle::opt_go) returns to the negotiating state to allow a change of /// export name before trying again. You may also use [opt_abort](Handle::opt_abort) /// or [shutdown](Handle::shutdown) to end the connection without finishing /// negotiation. pub fn set_opt_mode(&self, enable: bool) -> Result<()> { // Convert all arguments to FFI-like types. let enable_ffi = enable; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_opt_mode(self.data.handle.handle, enable_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// control whether libnbd pre-initializes read buffers /// /// By default, libnbd will pre-initialize the contents of a buffer /// passed to calls such as [pread](Handle::pread) to all zeroes prior to /// checking for any other errors, so that even if a client application /// passed in an uninitialized buffer but fails to check for errors, it /// will not result in a potential security risk caused by an accidental /// leak of prior heap contents (see CVE-2022-0485 in /// libnbd-security(3) for an example of a security hole in an /// application built against an earlier version of libnbd that lacked /// consistent pre-initialization). However, for a client application /// that has audited that an uninitialized buffer is never dereferenced, /// or which performs its own pre-initialization, libnbd's sanitization /// efforts merely pessimize performance (although the time spent in /// pre-initialization may pale in comparison to time spent waiting on /// network packets). /// /// Calling this function with `request` set to false tells libnbd to /// skip the buffer initialization step in read commands. pub fn set_pread_initialize(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_pread_initialize(self.data.handle.handle, request_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the per-handle private data /// /// Handles contain a private data field for applications to use /// for any purpose. /// /// When calling libnbd from C, the type of this field is `uintptr_t` so /// it can be used to store an unsigned integer or a pointer. /// /// In non-C bindings it can be used to store an unsigned integer. /// /// This function sets the value of this field and returns the old value /// (or 0 if it was not previously set). pub fn set_private_data(&self, private_data: usize) -> usize { // Convert all arguments to FFI-like types. let private_data_ffi = private_data; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_private_data(self.data.handle.handle, private_data_ffi) }; // Convert the result to something more rusty. ffi_ret as usize } /// control whether NBD_OPT_GO requests block size /// /// By default, when connecting to an export, libnbd requests that the /// server report any block size restrictions. The NBD protocol states /// that a server may supply block sizes regardless of whether the client /// requests them, and libnbd will report those block sizes (see /// [get_block_size](Handle::get_block_size)); conversely, if a client does not request /// block sizes, the server may reject the connection instead of dealing /// with a client sending unaligned requests. This function makes it /// possible to test server behavior by emulating older clients. /// /// Note that even when block size is requested, the server is not /// obligated to provide any. Furthermore, if block sizes are provided /// (whether or not the client requested them), libnbd enforces alignment /// to those sizes unless [set_strict_mode](Handle::set_strict_mode) is used to bypass /// client-side safety checks. pub fn set_request_block_size(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_request_block_size( self.data.handle.handle, request_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// control use of extended headers /// /// By default, libnbd tries to negotiate extended headers with the /// server, as this protocol extension permits the use of 64-bit /// zero, trim, and block status actions. However, /// for integration testing, it can be useful to clear this flag /// rather than find a way to alter the server to fail the negotiation /// request. /// /// For backwards compatibility, the setting of this knob is ignored /// if [set_request_structured_replies](Handle::set_request_structured_replies) is also set to false, /// since the use of extended headers implies structured replies. pub fn set_request_extended_headers(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_request_extended_headers( self.data.handle.handle, request_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// control whether connect automatically requests meta contexts /// /// This function controls whether the act of connecting to an export /// (all `nbd_connect_*` calls when [set_opt_mode](Handle::set_opt_mode) is false, /// or [opt_go](Handle::opt_go) and [opt_info](Handle::opt_info) when option mode is /// enabled) will also try to issue NBD_OPT_SET_META_CONTEXT when /// the server supports structured replies or extended headers and /// any contexts were registered by [add_meta_context](Handle::add_meta_context). The /// default setting is true; however the extra step of negotiating /// meta contexts is not always desirable: performing both info and /// go on the same export works without needing to re-negotiate /// contexts on the second call; integration testing of other servers /// may benefit from manual invocation of [opt_set_meta_context](Handle::opt_set_meta_context) /// at other times in the negotiation sequence; and even when using /// just [opt_info](Handle::opt_info), it can be faster to collect the server's /// results by relying on the callback function passed to /// [opt_list_meta_context](Handle::opt_list_meta_context) than a series of post-process /// calls to [can_meta_context](Handle::can_meta_context). /// /// Note that this control has no effect if the server does not /// negotiate structured replies or extended headers, or if the /// client did not request any contexts via [add_meta_context](Handle::add_meta_context). /// Setting this control to false may cause [block_status](Handle::block_status) /// to fail. pub fn set_request_meta_context(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_request_meta_context( self.data.handle.handle, request_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// control use of structured replies /// /// By default, libnbd tries to negotiate structured replies with the /// server, as this protocol extension must be in use before /// [can_meta_context](Handle::can_meta_context) or [can_df](Handle::can_df) can return true. However, /// for integration testing, it can be useful to clear this flag /// rather than find a way to alter the server to fail the negotiation /// request. It is also useful to set this to false prior to using /// [set_opt_mode](Handle::set_opt_mode) if it is desired to control when to send /// [opt_structured_reply](Handle::opt_structured_reply) during negotiation. /// /// Note that setting this knob to false also disables any automatic /// request for extended headers. pub fn set_request_structured_replies(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_request_structured_replies( self.data.handle.handle, request_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the socket activation name /// /// When running an NBD server using /// [connect_systemd_socket_activation](Handle::connect_systemd_socket_activation) you can optionally /// name the socket. Call this function before connecting to the /// server. /// /// Some servers such as qemu-storage-daemon(1) /// can use this information to associate the socket with a name /// used on the command line, but most servers will ignore it. /// The name is passed through the `LISTEN_FDNAMES` environment /// variable. /// /// The parameter `socket_name` can be a short alphanumeric string. /// If it is set to the empty string (also the default when the handle /// is created) then the name `unknown` will be seen by the server. pub fn set_socket_activation_name( &self, socket_name: impl Into>, ) -> Result<()> { // Convert all arguments to FFI-like types. let socket_name_buf = CString::new(socket_name.into()).map_err(|e| Error::from(e))?; let socket_name_ffi = socket_name_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_socket_activation_name( self.data.handle.handle, socket_name_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// control how strictly to follow NBD protocol /// /// By default, libnbd tries to detect requests that would trigger /// undefined behavior in the NBD protocol, and rejects them client /// side without causing any network traffic, rather than risking /// undefined server behavior. However, for integration testing, it /// can be handy to relax the strictness of libnbd, to coerce it into /// sending such requests over the network for testing the robustness /// of the server in dealing with such traffic. /// /// The `flags` argument is a bitmask, including zero or more of the /// following strictness flags: /// /// /// - `LIBNBD_STRICT_COMMANDS` = 0x1 /// /// If set, this flag rejects client requests that do not comply with the /// set of advertised server flags (for example, attempting a write on /// a read-only server, or attempting to use `LIBNBD_CMD_FLAG_FUA` when /// [can_fua](Handle::can_fua) returned false). If clear, this flag relies on the /// server to reject unexpected commands. /// /// - `LIBNBD_STRICT_FLAGS` = 0x2 /// /// If set, this flag rejects client requests that attempt to set a /// command flag not recognized by libnbd (those outside of /// `LIBNBD_CMD_FLAG_MASK`), or a flag not normally associated with /// a command (such as using `LIBNBD_CMD_FLAG_FUA` on a read command). /// If clear, all flags are sent on to the server, even if sending such /// a flag may cause the server to change its reply in a manner that /// confuses libnbd, perhaps causing deadlock or ending the connection. /// /// Flags that are known by libnbd as associated with a given command /// (such as `LIBNBD_CMD_FLAG_DF` for [pread_structured](Handle::pread_structured) gated /// by [can_df](Handle::can_df)) are controlled by `LIBNBD_STRICT_COMMANDS` /// instead; and `LIBNBD_CMD_FLAG_PAYLOAD_LEN` is managed automatically /// by libnbd unless `LIBNBD_STRICT_AUTO_FLAG` is disabled. /// /// Note that the NBD protocol only supports 16 bits of command flags, /// even though the libnbd API uses `uint32_t`; bits outside of the /// range permitted by the protocol are always a client-side error. /// /// - `LIBNBD_STRICT_BOUNDS` = 0x4 /// /// If set, this flag rejects client requests that would exceed the export /// bounds without sending any traffic to the server. If clear, this flag /// relies on the server to detect out-of-bounds requests. /// /// - `LIBNBD_STRICT_ZERO_SIZE` = 0x8 /// /// If set, this flag rejects client requests with length 0. If clear, /// this permits zero-length requests to the server, which may produce /// undefined results. /// /// - `LIBNBD_STRICT_ALIGN` = 0x10 /// /// If set, and the server provided minimum block sizes (see /// `LIBNBD_SIZE_MINIMUM` for [get_block_size](Handle::get_block_size)), this /// flag rejects client requests that do not have length and offset /// aligned to the server's minimum requirements. If clear, /// unaligned requests are sent to the server, where it is up to /// the server whether to honor or reject the request. /// /// - `LIBNBD_STRICT_PAYLOAD` = 0x20 /// /// If set, the client refuses to send a command to the server /// with more than libnbd's outgoing payload maximum (see /// `LIBNBD_SIZE_PAYLOAD` for [get_block_size](Handle::get_block_size)), whether /// or not the server advertised a block size maximum. If clear, /// oversize requests up to 64MiB may be attempted, although /// requests larger than 32MiB are liable to cause some servers to /// disconnect. /// /// - `LIBNBD_STRICT_AUTO_FLAG` = 0x40 /// /// If set, commands that accept the `LIBNBD_CMD_FLAG_PAYLOAD_LEN` /// flag (such as [pwrite](Handle::pwrite) and `nbd_block_status_filter(3)`) /// ignore the presence or absence of that flag from the caller, /// instead sending the value over the wire that matches the /// server's expectations based on whether extended headers were /// negotiated when the connection was made. If clear, the caller /// takes on the responsibility for whether the payload length /// flag is set or clear during the affected command, which can /// be useful during integration testing but is more likely to /// lead to undefined behavior. /// /// /// For convenience, the constant `LIBNBD_STRICT_MASK` is available to /// describe all strictness flags supported by this build of libnbd. /// Future versions of libnbd may add further flags, which are likely /// to be enabled by default for additional client-side filtering. As /// such, when attempting to relax only one specific bit while keeping /// remaining checks at the client side, it is wiser to first call /// [get_strict_mode](Handle::get_strict_mode) and modify that value, rather than /// blindly setting a constant value. pub fn set_strict_mode(&self, flags: Strict) -> Result<()> { // Convert all arguments to FFI-like types. let flags_ffi = flags.bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_strict_mode(self.data.handle.handle, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// enable or require TLS (authentication and encryption) /// /// Enable or require TLS (authenticated and encrypted connections) to the /// NBD server. The possible settings are: /// /// /// - `LIBNBD_TLS_DISABLE` /// /// Disable TLS. (The default setting, unless using [connect_uri](Handle::connect_uri) with /// a URI that requires TLS). /// /// This setting is also necessary if you use [set_opt_mode](Handle::set_opt_mode) /// and want to interact in plaintext with a server that implements /// the NBD protocol's `SELECTIVETLS` mode, prior to enabling TLS /// with [opt_starttls](Handle::opt_starttls). Most NBD servers with TLS support /// prefer the NBD protocol's `FORCEDTLS` mode, so this sort of /// manual interaction tends to be useful mainly during integration /// testing. /// /// - `LIBNBD_TLS_ALLOW` /// /// Enable TLS if possible. /// /// This option is insecure (or best effort) in that in some cases /// it will fall back to an unencrypted and/or unauthenticated /// connection if TLS could not be established. Use /// `LIBNBD_TLS_REQUIRE` below if the connection must be /// encrypted. /// /// Some servers will drop the connection if TLS fails /// so fallback may not be possible. /// /// - `LIBNBD_TLS_REQUIRE` /// /// Require an encrypted and authenticated TLS connection. /// Always fail to connect if the connection is not encrypted /// and authenticated. /// /// /// As well as calling this you may also need to supply /// the path to the certificates directory ([set_tls_certificates](Handle::set_tls_certificates)), /// the username ([set_tls_username](Handle::set_tls_username)) and/or /// the Pre-Shared Keys (PSK) file ([set_tls_psk_file](Handle::set_tls_psk_file)). For now, /// when using [connect_uri](Handle::connect_uri), any URI query parameters related to /// TLS are not handled automatically. Setting the level higher than /// zero will fail if libnbd was not compiled against gnutls; you can /// test whether this is the case with [supports_tls](Handle::supports_tls). pub fn set_tls(&self, tls: Tls) -> Result<()> { // Convert all arguments to FFI-like types. let tls_ffi = tls as c_int; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls(self.data.handle.handle, tls_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the path to the TLS certificates directory /// /// Set the path to the TLS certificates directory. If not /// set and TLS is used then a compiled in default is used. /// For root this is `/etc/pki/libnbd/`. For non-root this is /// `$HOME/.pki/libnbd` and `$HOME/.config/pki/libnbd`. If /// none of these directories can be found then the system /// trusted CAs are used. /// /// This function may be called regardless of whether TLS is /// supported, but will have no effect unless [set_tls](Handle::set_tls) /// is also used to request or require TLS. pub fn set_tls_certificates(&self, dir: impl Into) -> Result<()> { // Convert all arguments to FFI-like types. let dir_buf = CString::new(dir.into().into_os_string().into_vec()) .map_err(|e| Error::from(e))?; let dir_ffi = dir_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls_certificates(self.data.handle.handle, dir_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the TLS Pre-Shared Keys (PSK) filename /// /// Set the TLS Pre-Shared Keys (PSK) filename. This is used /// if trying to authenticate to the server using with a pre-shared /// key. There is no default so if this is not set then PSK /// authentication cannot be used to connect to the server. /// /// This function may be called regardless of whether TLS is /// supported, but will have no effect unless [set_tls](Handle::set_tls) /// is also used to request or require TLS. pub fn set_tls_psk_file(&self, filename: impl Into) -> Result<()> { // Convert all arguments to FFI-like types. let filename_buf = CString::new(filename.into().into_os_string().into_vec()) .map_err(|e| Error::from(e))?; let filename_ffi = filename_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls_psk_file(self.data.handle.handle, filename_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the TLS username /// /// Set the TLS client username. This is used /// if authenticating with PSK over TLS is enabled. /// If not set then the local username is used. /// /// This function may be called regardless of whether TLS is /// supported, but will have no effect unless [set_tls](Handle::set_tls) /// is also used to request or require TLS. pub fn set_tls_username(&self, username: impl Into>) -> Result<()> { // Convert all arguments to FFI-like types. let username_buf = CString::new(username.into()).map_err(|e| Error::from(e))?; let username_ffi = username_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls_username(self.data.handle.handle, username_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set whether we verify the identity of the server /// /// Set this flag to control whether libnbd will verify the identity /// of the server from the server's certificate and the certificate /// authority. This defaults to true when connecting to TCP servers /// using TLS certificate authentication, and false otherwise. /// /// This function may be called regardless of whether TLS is /// supported, but will have no effect unless [set_tls](Handle::set_tls) /// is also used to request or require TLS. pub fn set_tls_verify_peer(&self, verify: bool) -> Result<()> { // Convert all arguments to FFI-like types. let verify_ffi = verify; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls_verify_peer(self.data.handle.handle, verify_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the allowed transports in NBD URIs /// /// Allow NBD URIs to reference local files. This is disabled /// by default. /// /// Currently this setting only controls whether the `tls-psk-file` /// parameter in NBD URIs is allowed. pub fn set_uri_allow_local_file(&self, allow: bool) -> Result<()> { // Convert all arguments to FFI-like types. let allow_ffi = allow; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_uri_allow_local_file( self.data.handle.handle, allow_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the allowed TLS settings in NBD URIs /// /// Set which TLS settings are allowed to appear in NBD URIs. The /// default is to allow either non-TLS or TLS URIs. /// /// The `tls` parameter can be: /// /// /// - `LIBNBD_TLS_DISABLE` /// /// TLS URIs are not permitted, ie. a URI such as `nbds://...` /// will be rejected. /// /// - `LIBNBD_TLS_ALLOW` /// /// This is the default. TLS may be used or not, depending on /// whether the URI uses `nbds` or `nbd`. /// /// - `LIBNBD_TLS_REQUIRE` /// /// TLS URIs are required. All URIs must use `nbds`. /// pub fn set_uri_allow_tls(&self, tls: Tls) -> Result<()> { // Convert all arguments to FFI-like types. let tls_ffi = tls as c_int; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_uri_allow_tls(self.data.handle.handle, tls_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the allowed transports in NBD URIs /// /// Set which transports are allowed to appear in NBD URIs. The /// default is to allow any transport. /// /// The `mask` parameter may contain any of the following flags /// ORed together: /// /// /// - `LIBNBD_ALLOW_TRANSPORT_TCP` = 0x1 /// /// - `LIBNBD_ALLOW_TRANSPORT_UNIX` = 0x2 /// /// - `LIBNBD_ALLOW_TRANSPORT_VSOCK` = 0x4 /// /// /// For convenience, the constant `LIBNBD_ALLOW_TRANSPORT_MASK` is /// available to describe all transports recognized by this build of /// libnbd. A future version of the library may add new flags. pub fn set_uri_allow_transports(&self, mask: AllowTransport) -> Result<()> { // Convert all arguments to FFI-like types. let mask_ffi = mask.bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_uri_allow_transports(self.data.handle.handle, mask_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// statistics of bytes received over connection so far /// /// Return the number of bytes that the client has received from the server. /// /// This tracks the plaintext bytes utilized by the NBD protocol; it /// may differ from the number of bytes actually received over the /// connection, particularly when TLS is in use. pub fn stats_bytes_received(&self) -> u64 { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_stats_bytes_received(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret as u64 } /// statistics of bytes sent over connection so far /// /// Return the number of bytes that the client has sent to the server. /// /// This tracks the plaintext bytes utilized by the NBD protocol; it /// may differ from the number of bytes actually sent over the /// connection, particularly when TLS is in use. pub fn stats_bytes_sent(&self) -> u64 { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_stats_bytes_sent(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret as u64 } /// statistics of chunks received over connection so far /// /// Return the number of chunks that the client has received from the /// server, where a chunk is a group of bytes delineated by a magic /// number that cannot be further subdivided without breaking the /// protocol. /// /// This number does not necessarily relate to the number of API /// calls made, nor to the number of TCP packets received over the /// connection. pub fn stats_chunks_received(&self) -> u64 { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_stats_chunks_received(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret as u64 } /// statistics of chunks sent over connection so far /// /// Return the number of chunks that the client has sent to the /// server, where a chunk is a group of bytes delineated by a magic /// number that cannot be further subdivided without breaking the /// protocol. /// /// This number does not necessarily relate to the number of API /// calls made, nor to the number of TCP packets sent over the /// connection. pub fn stats_chunks_sent(&self) -> u64 { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_stats_chunks_sent(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret as u64 } /// true if libnbd was compiled with support for TLS /// /// Returns true if libnbd was compiled with gnutls which is required /// to support TLS encryption, or false if not. pub fn supports_tls(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_supports_tls(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// true if libnbd was compiled with support for NBD URIs /// /// Returns true if libnbd was compiled with libxml2 which is required /// to support NBD URIs, or false if not. pub fn supports_uri(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_supports_uri(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// true if libnbd was compiled with support for AF_VSOCK /// /// Returns true if libnbd was compiled with support for the `AF_VSOCK` /// family of sockets, or false if not. /// /// Note that on the Linux operating system, this returns true if /// there is compile-time support, but you may still need runtime /// support for some aspects of AF_VSOCK usage; for example, use of /// `VMADDR_CID_LOCAL` as the server name requires that the /// vsock_loopback kernel module is loaded. pub fn supports_vsock(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_supports_vsock(self.data.handle.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// send block status command, with 32-bit callback /// /// Send the block status command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [block_status](Handle::block_status). /// /// This function is inherently limited to 32-bit values. If the /// server replies with a larger extent, the length of that extent /// will be truncated to just below 32 bits and any further extents /// from the server will be ignored. If the server replies with a /// status value larger than 32 bits (only possible when extended /// headers are in use), the callback function will be passed an /// `EOVERFLOW` error. To get the full extent information from a /// server that supports 64-bit extents, you must use /// [aio_block_status_64](Handle::aio_block_status_64). /// /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn block_status( &self, count: u64, offset: u64, extent: impl FnMut(&[u8], u64, &[u32], &mut c_int) -> c_int + Send + Sync + 'static, flags: Option, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let extent_ffi = unsafe { crate::bindings::extent_to_raw(extent) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_block_status( self.data.handle.handle, count_ffi, offset_ffi, extent_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// send block status command, with 64-bit callback /// /// Send the block status command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [block_status_64](Handle::block_status_64). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn block_status_64( &self, count: u64, offset: u64, extent64: impl FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync + 'static, flags: Option, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let extent64_ffi = unsafe { crate::bindings::extent64_to_raw(extent64) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_block_status_64( self.data.handle.handle, count_ffi, offset_ffi, extent64_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// send filtered block status command to the NBD server /// /// Send a filtered block status command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [block_status_filter](Handle::block_status_filter). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn block_status_filter( &self, count: u64, offset: u64, contexts: impl IntoIterator>, extent64: impl FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync + 'static, flags: Option, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let contexts_ffi_c_strs: Vec = contexts .into_iter() .map(|x| { CString::new(x.as_ref()) .map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut contexts_ffi_ptrs: Vec<*mut c_char> = contexts_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); contexts_ffi_ptrs.push(ptr::null_mut()); let contexts_ffi = contexts_ffi_ptrs.as_mut_ptr(); let extent64_ffi = unsafe { crate::bindings::extent64_to_raw(extent64) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_block_status_filter( self.data.handle.handle, count_ffi, offset_ffi, contexts_ffi, extent64_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// send cache (prefetch) command to the NBD server /// /// Issue the cache (prefetch) command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [cache](Handle::cache). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn cache( &self, count: u64, offset: u64, flags: Option, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_cache( self.data.handle.handle, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// connect to the NBD server /// /// Begin connecting to the NBD server. The `addr` and `addrlen` /// parameters specify the address of the socket to connect to. /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub async fn connect(&self, addr: SocketAddr) -> SharedResult<()> { { // Convert all arguments to FFI-like types. let addr_os = OsSocketAddr::from(addr); let addr_ffi = addr_os.as_ptr(); let addrlen_ffi = addr_os.len(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect( self.data.handle.handle, addr_ffi, addrlen_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_connecting() != false { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// connect to the NBD server /// /// Run the command as a subprocess and begin connecting to it over /// stdin/stdout. Parameters behave as documented in /// [connect_command](Handle::connect_command). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub async fn connect_command( &self, argv: impl IntoIterator>, ) -> SharedResult<()> { { // Convert all arguments to FFI-like types. let argv_ffi_c_strs: Vec = argv .into_iter() .map(|x| { CString::new(x.as_ref()) .map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut argv_ffi_ptrs: Vec<*mut c_char> = argv_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); argv_ffi_ptrs.push(ptr::null_mut()); let argv_ffi = argv_ffi_ptrs.as_mut_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_command(self.data.handle.handle, argv_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_connecting() != false { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// connect directly to a connected socket /// /// Begin connecting to the connected socket `fd`. /// Parameters behave as documented in [connect_socket](Handle::connect_socket). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub async fn connect_socket(&self, sock: OwnedFd) -> SharedResult<()> { { // Convert all arguments to FFI-like types. let sock_ffi = sock.as_raw_fd(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_socket(self.data.handle.handle, sock_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_connecting() != false { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// connect using systemd socket activation /// /// Run the command as a subprocess and begin connecting to it using /// systemd socket activation. Parameters behave as documented in /// [connect_systemd_socket_activation](Handle::connect_systemd_socket_activation). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub async fn connect_systemd_socket_activation( &self, argv: impl IntoIterator>, ) -> SharedResult<()> { { // Convert all arguments to FFI-like types. let argv_ffi_c_strs: Vec = argv .into_iter() .map(|x| { CString::new(x.as_ref()) .map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut argv_ffi_ptrs: Vec<*mut c_char> = argv_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); argv_ffi_ptrs.push(ptr::null_mut()); let argv_ffi = argv_ffi_ptrs.as_mut_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_systemd_socket_activation( self.data.handle.handle, argv_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_connecting() != false { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// connect to the NBD server over a TCP port /// /// Begin connecting to the NBD server listening on `hostname:port`. /// Parameters behave as documented in [connect_tcp](Handle::connect_tcp). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub async fn connect_tcp( &self, hostname: impl Into>, port: impl Into>, ) -> SharedResult<()> { { // Convert all arguments to FFI-like types. let hostname_buf = CString::new(hostname.into()).map_err(|e| Error::from(e))?; let hostname_ffi = hostname_buf.as_ptr(); let port_buf = CString::new(port.into()).map_err(|e| Error::from(e))?; let port_ffi = port_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_tcp( self.data.handle.handle, hostname_ffi, port_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_connecting() != false { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// connect to the NBD server over a Unix domain socket /// /// Begin connecting to the NBD server over Unix domain socket /// (`unixsocket`). Parameters behave as documented in /// [connect_unix](Handle::connect_unix). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub async fn connect_unix( &self, unixsocket: impl Into, ) -> SharedResult<()> { { // Convert all arguments to FFI-like types. let unixsocket_buf = CString::new(unixsocket.into().into_os_string().into_vec()) .map_err(|e| Error::from(e))?; let unixsocket_ffi = unixsocket_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_unix( self.data.handle.handle, unixsocket_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_connecting() != false { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// connect to an NBD URI /// /// Begin connecting to the NBD URI `uri`. Parameters behave as /// documented in [connect_uri](Handle::connect_uri). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub async fn connect_uri( &self, uri: impl Into>, ) -> SharedResult<()> { { // Convert all arguments to FFI-like types. let uri_buf = CString::new(uri.into()).map_err(|e| Error::from(e))?; let uri_ffi = uri_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_uri(self.data.handle.handle, uri_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_connecting() != false { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// connect to the NBD server over AF_VSOCK socket /// /// Begin connecting to the NBD server over the `AF_VSOCK` /// protocol to the server `cid:port`. Parameters behave as documented in /// [connect_vsock](Handle::connect_vsock). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub async fn connect_vsock(&self, cid: u32, port: u32) -> SharedResult<()> { { // Convert all arguments to FFI-like types. let cid_ffi = cid; let port_ffi = port; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_vsock( self.data.handle.handle, cid_ffi, port_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_connecting() != false { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// disconnect from the NBD server /// /// Issue the disconnect command to the NBD server. This is /// not a normal command because NBD servers are not obliged /// to send a reply. Instead you should wait for /// [aio_is_closed](Handle::aio_is_closed) to become true on the connection. Once this /// command is issued, you cannot issue any further commands. /// /// Although libnbd does not prevent you from issuing this command while /// still waiting on the replies to previous commands, the NBD protocol /// recommends that you wait until there are no other commands in flight /// (see [aio_in_flight](Handle::aio_in_flight)), to give the server a better chance at a /// clean shutdown. /// /// The `flags` parameter must be `0` for now (it exists for future NBD /// protocol extensions). There is no direct synchronous counterpart; /// however, [shutdown](Handle::shutdown) will call this function if appropriate. pub async fn disconnect(&self, flags: Option) -> SharedResult<()> { { // Convert all arguments to FFI-like types. let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_disconnect(self.data.handle.handle, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_closed() != true { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// send flush command to the NBD server /// /// Issue the flush command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [flush](Handle::flush). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn flush(&self, flags: Option) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_flush( self.data.handle.handle, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// end negotiation and close the connection /// /// Request that the server finish negotiation, gracefully if possible, then /// close the connection. This can only be used if [set_opt_mode](Handle::set_opt_mode) /// enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. pub async fn opt_abort(&self) -> SharedResult<()> { { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_abort(self.data.handle.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let (ret_tx, ret_rx) = oneshot::channel::>(); let mut ret_tx = Some(ret_tx); let completion_predicate = move |handle: &Handle, res: &SharedResult<()>| { let ret = if let Err(_) = res { res.clone() } else { if handle.aio_is_connecting() != false { return false; } else { Ok(()) } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// request the server to enable extended headers /// /// Request that the server use extended headers, by sending /// `NBD_OPT_EXTENDED_HEADERS`. This behaves like the synchronous /// counterpart [opt_extended_headers](Handle::opt_extended_headers), except that it does /// not wait for the server's response. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub async fn opt_extended_headers(&self) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_extended_headers( self.data.handle.handle, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// end negotiation and move on to using an export /// /// Request that the server finish negotiation and move on to serving the /// export previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that directly detecting /// whether the server returns an error (as is done by the return value /// of the synchronous counterpart) is only possible with a completion /// callback; however it is also possible to indirectly detect an error /// when [aio_is_negotiating](Handle::aio_is_negotiating) returns true. pub async fn opt_go(&self) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_go(self.data.handle.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// request the server for information about an export /// /// Request that the server supply information about the export name /// previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub async fn opt_info(&self) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_info(self.data.handle.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// request the server to list all exports during negotiation /// /// Request that the server list all exports that it supports. This can /// only be used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub async fn opt_list( &self, list: impl FnMut(&[u8], &[u8]) -> c_int + Send + Sync + 'static, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let list_ffi = unsafe { crate::bindings::list_to_raw(list) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_list( self.data.handle.handle, list_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// request list of available meta contexts, using implicit query /// /// Request that the server list available meta contexts associated with /// the export previously specified by the most recent /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri), and with a /// list of queries from prior calls to [add_meta_context](Handle::add_meta_context) /// (see [aio_opt_list_meta_context_queries](Handle::aio_opt_list_meta_context_queries) if you want to /// supply an explicit query list instead). This can only be /// used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub async fn opt_list_meta_context( &self, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_list_meta_context( self.data.handle.handle, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// request list of available meta contexts, using explicit query /// /// Request that the server list available meta contexts associated with /// the export previously specified by the most recent /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri), and with an /// explicit list of queries provided as a parameter (see /// [aio_opt_list_meta_context](Handle::aio_opt_list_meta_context) if you want to reuse an /// implicit query list instead). This can only be /// used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub async fn opt_list_meta_context_queries( &self, queries: impl IntoIterator>, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let queries_ffi_c_strs: Vec = queries .into_iter() .map(|x| { CString::new(x.as_ref()) .map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut queries_ffi_ptrs: Vec<*mut c_char> = queries_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); queries_ffi_ptrs.push(ptr::null_mut()); let queries_ffi = queries_ffi_ptrs.as_mut_ptr(); let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_list_meta_context_queries( self.data.handle.handle, queries_ffi, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// select specific meta contexts, with implicit query list /// /// Request that the server supply all recognized meta contexts /// registered through prior calls to [add_meta_context](Handle::add_meta_context), in /// conjunction with the export previously specified by the most /// recent [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri). /// This can only be used if [set_opt_mode](Handle::set_opt_mode) enabled option /// mode. Normally, this function is redundant, as [opt_go](Handle::opt_go) /// automatically does the same task if structured replies or /// extended headers have already been negotiated. But manual /// control over meta context requests can be useful for fine-grained /// testing of how a server handles unusual negotiation sequences. /// Often, use of this function is coupled with /// [set_request_meta_context](Handle::set_request_meta_context) to bypass the automatic /// context request normally performed by [opt_go](Handle::opt_go). /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub async fn opt_set_meta_context( &self, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_set_meta_context( self.data.handle.handle, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// select specific meta contexts, with explicit query list /// /// Request that the server supply all recognized meta contexts /// passed in through `queries`, in conjunction with the export /// previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used /// if [set_opt_mode](Handle::set_opt_mode) enabled option mode. Normally, this /// function is redundant, as [opt_go](Handle::opt_go) automatically does /// the same task if structured replies or extended headers have /// already been negotiated. But manual control over meta context /// requests can be useful for fine-grained testing of how a server /// handles unusual negotiation sequences. Often, use of this /// function is coupled with [set_request_meta_context](Handle::set_request_meta_context) to /// bypass the automatic context request normally performed by /// [opt_go](Handle::opt_go). /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub async fn opt_set_meta_context_queries( &self, queries: impl IntoIterator>, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let queries_ffi_c_strs: Vec = queries .into_iter() .map(|x| { CString::new(x.as_ref()) .map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut queries_ffi_ptrs: Vec<*mut c_char> = queries_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); queries_ffi_ptrs.push(ptr::null_mut()); let queries_ffi = queries_ffi_ptrs.as_mut_ptr(); let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_set_meta_context_queries( self.data.handle.handle, queries_ffi, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// request the server to initiate TLS /// /// Request that the server initiate a secure TLS connection, by /// sending `NBD_OPT_STARTTLS`. This behaves like the synchronous /// counterpart [opt_starttls](Handle::opt_starttls), except that it does /// not wait for the server's response. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub async fn opt_starttls(&self) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_starttls( self.data.handle.handle, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// request the server to enable structured replies /// /// Request that the server use structured replies, by sending /// `NBD_OPT_STRUCTURED_REPLY`. This behaves like the synchronous /// counterpart [opt_structured_reply](Handle::opt_structured_reply), except that it does /// not wait for the server's response. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub async fn opt_structured_reply(&self) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_structured_reply( self.data.handle.handle, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// read from the NBD server /// /// Issue a read command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Note that you must ensure `buf` is valid until the command has /// completed. Furthermore, if the `error` parameter to /// `completion_callback` is set or if [aio_command_completed](Handle::aio_command_completed) /// reports failure, and if [get_pread_initialize](Handle::get_pread_initialize) returns true, /// then libnbd sanitized `buf`, but it is unspecified whether the /// contents of `buf` will read as zero or as partial results from the /// server. If [get_pread_initialize](Handle::get_pread_initialize) returns false, then /// libnbd did not sanitize `buf`, and the contents are undefined /// on failure. /// /// Other parameters behave as documented in [pread](Handle::pread). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn pread( &self, buf: &mut [u8], offset: u64, flags: Option, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_mut_ptr() as *mut c_void; let count_ffi = buf.len(); let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_pread( self.data.handle.handle, buf_ffi, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// read from the NBD server /// /// Issue a read command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Note that you must ensure `buf` is valid until the command has /// completed. Furthermore, if the `error` parameter to /// `completion_callback` is set or if [aio_command_completed](Handle::aio_command_completed) /// reports failure, and if [get_pread_initialize](Handle::get_pread_initialize) returns true, /// then libnbd sanitized `buf`, but it is unspecified whether the /// contents of `buf` will read as zero or as partial results from the /// server. If [get_pread_initialize](Handle::get_pread_initialize) returns false, then /// libnbd did not sanitize `buf`, and the contents are undefined /// on failure. /// /// Other parameters behave as documented in [pread_structured](Handle::pread_structured). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn pread_structured( &self, buf: &mut [u8], offset: u64, chunk: impl FnMut(&[u8], u64, c_uint, &mut c_int) -> c_int + Send + Sync + 'static, flags: Option, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_mut_ptr() as *mut c_void; let count_ffi = buf.len(); let offset_ffi = offset; let chunk_ffi = unsafe { crate::bindings::chunk_to_raw(chunk) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_pread_structured( self.data.handle.handle, buf_ffi, count_ffi, offset_ffi, chunk_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// write to the NBD server /// /// Issue a write command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Note that you must ensure `buf` is valid until the command has /// completed. Other parameters behave as documented in [pwrite](Handle::pwrite). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn pwrite( &self, buf: &[u8], offset: u64, flags: Option, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_ptr() as *const c_void; let count_ffi = buf.len(); let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_pwrite( self.data.handle.handle, buf_ffi, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// send trim command to the NBD server /// /// Issue a trim command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [trim](Handle::trim). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn trim( &self, count: u64, offset: u64, flags: Option, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_trim( self.data.handle.handle, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } /// send write zeroes command to the NBD server /// /// Issue a write zeroes command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [zero](Handle::zero). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub async fn zero( &self, count: u64, offset: u64, flags: Option, ) -> SharedResult<()> { // A oneshot channel to notify when the call is completed. let (ret_tx, ret_rx) = oneshot::channel::>(); let (ccb_tx, mut ccb_rx) = oneshot::channel::(); let completion = Some(utils::fn_once_to_fn_mut(|err: &mut i32| { ccb_tx.send(*err).ok(); 1 })); { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_zero( self.data.handle.handle, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } }?; let mut ret_tx = Some(ret_tx); let completion_predicate = move |_handle: &Handle, res: &SharedResult<()>| { let ret = match res { Err(e) if e.is_fatal() => res.clone(), _ => { let Ok(errno) = ccb_rx.try_recv() else { return false; }; if errno == 0 { Ok(()) } else { if let Err(e) = res { Err(e.clone()) } else { Err(Arc::new(Error::Recoverable( ErrorKind::from_errno(errno), ))) } } } }; ret_tx.take().unwrap().send(ret).ok(); true }; self.add_command(completion_predicate)?; ret_rx.await.unwrap() } } libnbd-1.20.3/rust/src/bindings.rs0000444000175000017500000076133514636624347012473 /* NBD client library in userspace * WARNING: THIS FILE IS GENERATED FROM * generator/generator * ANY CHANGES YOU MAKE TO THIS FILE WILL BE LOST. * * Copyright Tage Johansson * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ use crate::{types::*, *}; use bitflags::bitflags; use libnbd_sys::nbd_extent; use os_socketaddr::OsSocketAddr; use std::ffi::*; use std::mem; use std::net::SocketAddr; use std::os::fd::{AsRawFd, OwnedFd, RawFd}; use std::os::unix::prelude::*; use std::path::PathBuf; use std::ptr; use std::slice; pub const AIO_DIRECTION_READ: u32 = 1; pub const AIO_DIRECTION_WRITE: u32 = 2; pub const AIO_DIRECTION_BOTH: u32 = 3; pub const READ_DATA: u32 = 1; pub const READ_HOLE: u32 = 2; pub const READ_ERROR: u32 = 3; #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] #[repr(isize)] pub enum Tls { Disable = 0, Allow = 1, Require = 2, } #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] #[repr(isize)] pub enum Size { Minimum = 0, Preferred = 1, Maximum = 2, Payload = 3, } bitflags! { #[repr(C)] #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub struct CmdFlag: u32 { const FUA = 1; const NO_HOLE = 2; const DF = 4; const REQ_ONE = 8; const FAST_ZERO = 16; const PAYLOAD_LEN = 32; } } bitflags! { #[repr(C)] #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub struct HandshakeFlag: u32 { const FIXED_NEWSTYLE = 1; const NO_ZEROES = 2; } } bitflags! { #[repr(C)] #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub struct Strict: u32 { const COMMANDS = 1; const FLAGS = 2; const BOUNDS = 4; const ZERO_SIZE = 8; const ALIGN = 16; const PAYLOAD = 32; const AUTO_FLAG = 64; } } bitflags! { #[repr(C)] #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub struct AllowTransport: u32 { const TCP = 1; const UNIX = 2; const VSOCK = 4; } } bitflags! { #[repr(C)] #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub struct Shutdown: u32 { const ABANDON_PENDING = 65536; } } pub const NAMESPACE_BASE: &[u8] = b"base:"; pub const CONTEXT_BASE_ALLOCATION: &[u8] = b"base:allocation"; pub const STATE_HOLE: u32 = 1; pub const STATE_ZERO: u32 = 2; pub const NAMESPACE_QEMU: &[u8] = b"qemu:"; pub const CONTEXT_QEMU_DIRTY_BITMAP: &[u8] = b"qemu:dirty-bitmap:"; pub const STATE_DIRTY: u32 = 1; pub const CONTEXT_QEMU_ALLOCATION_DEPTH: &[u8] = b"qemu:allocation-depth"; pub(crate) unsafe fn chunk_to_raw(f: F) -> sys::nbd_chunk_callback where F: FnMut(&[u8], u64, c_uint, &mut c_int) -> c_int + Send + Sync, { unsafe extern "C" fn call_closure( data: *mut c_void, subbuf_ffi: *const c_void, count_ffi: usize, offset_ffi: u64, status_ffi: c_uint, error_ffi: *mut c_int, ) -> c_int where F: FnMut(&[u8], u64, c_uint, &mut c_int) -> c_int + Send + Sync, { let callback_ptr = data as *mut F; let callback = &mut *callback_ptr; let subbuf: &[u8] = slice::from_raw_parts(subbuf_ffi as *const u8, count_ffi); let offset: u64 = offset_ffi; let status: c_uint = status_ffi; let error: &mut c_int = error_ffi.as_mut().unwrap(); callback(subbuf, offset, status, error) } let callback_data = Box::into_raw(Box::new(f)); sys::nbd_chunk_callback { callback: Some(call_closure::), user_data: callback_data as *mut _, free: Some(utils::drop_data::), } } pub(crate) unsafe fn completion_to_raw(f: F) -> sys::nbd_completion_callback where F: FnMut(&mut c_int) -> c_int + Send + Sync, { unsafe extern "C" fn call_closure( data: *mut c_void, error_ffi: *mut c_int, ) -> c_int where F: FnMut(&mut c_int) -> c_int + Send + Sync, { let callback_ptr = data as *mut F; let callback = &mut *callback_ptr; let error: &mut c_int = error_ffi.as_mut().unwrap(); callback(error) } let callback_data = Box::into_raw(Box::new(f)); sys::nbd_completion_callback { callback: Some(call_closure::), user_data: callback_data as *mut _, free: Some(utils::drop_data::), } } pub(crate) unsafe fn debug_to_raw(f: F) -> sys::nbd_debug_callback where F: FnMut(&[u8], &[u8]) -> c_int + Send + Sync, { unsafe extern "C" fn call_closure( data: *mut c_void, context_ffi: *const c_char, msg_ffi: *const c_char, ) -> c_int where F: FnMut(&[u8], &[u8]) -> c_int + Send + Sync, { let callback_ptr = data as *mut F; let callback = &mut *callback_ptr; let context: &[u8] = CStr::from_ptr(context_ffi).to_bytes(); let msg: &[u8] = CStr::from_ptr(msg_ffi).to_bytes(); callback(context, msg) } let callback_data = Box::into_raw(Box::new(f)); sys::nbd_debug_callback { callback: Some(call_closure::), user_data: callback_data as *mut _, free: Some(utils::drop_data::), } } pub(crate) unsafe fn extent_to_raw(f: F) -> sys::nbd_extent_callback where F: FnMut(&[u8], u64, &[u32], &mut c_int) -> c_int + Send + Sync, { unsafe extern "C" fn call_closure( data: *mut c_void, metacontext_ffi: *const c_char, offset_ffi: u64, entries_ffi: *mut u32, nr_entries_ffi: usize, error_ffi: *mut c_int, ) -> c_int where F: FnMut(&[u8], u64, &[u32], &mut c_int) -> c_int + Send + Sync, { let callback_ptr = data as *mut F; let callback = &mut *callback_ptr; let metacontext: &[u8] = CStr::from_ptr(metacontext_ffi).to_bytes(); let offset: u64 = offset_ffi; let entries: &[u32] = slice::from_raw_parts(entries_ffi, nr_entries_ffi); let error: &mut c_int = error_ffi.as_mut().unwrap(); callback(metacontext, offset, entries, error) } let callback_data = Box::into_raw(Box::new(f)); sys::nbd_extent_callback { callback: Some(call_closure::), user_data: callback_data as *mut _, free: Some(utils::drop_data::), } } pub(crate) unsafe fn extent64_to_raw(f: F) -> sys::nbd_extent64_callback where F: FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync, { unsafe extern "C" fn call_closure( data: *mut c_void, metacontext_ffi: *const c_char, offset_ffi: u64, entries_ffi: *mut nbd_extent, nr_entries_ffi: usize, error_ffi: *mut c_int, ) -> c_int where F: FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync, { let callback_ptr = data as *mut F; let callback = &mut *callback_ptr; let metacontext: &[u8] = CStr::from_ptr(metacontext_ffi).to_bytes(); let offset: u64 = offset_ffi; let entries: &[NbdExtent] = slice::from_raw_parts( entries_ffi as *const NbdExtent, nr_entries_ffi, ); let error: &mut c_int = error_ffi.as_mut().unwrap(); callback(metacontext, offset, entries, error) } let callback_data = Box::into_raw(Box::new(f)); sys::nbd_extent64_callback { callback: Some(call_closure::), user_data: callback_data as *mut _, free: Some(utils::drop_data::), } } pub(crate) unsafe fn list_to_raw(f: F) -> sys::nbd_list_callback where F: FnMut(&[u8], &[u8]) -> c_int + Send + Sync, { unsafe extern "C" fn call_closure( data: *mut c_void, name_ffi: *const c_char, description_ffi: *const c_char, ) -> c_int where F: FnMut(&[u8], &[u8]) -> c_int + Send + Sync, { let callback_ptr = data as *mut F; let callback = &mut *callback_ptr; let name: &[u8] = CStr::from_ptr(name_ffi).to_bytes(); let description: &[u8] = CStr::from_ptr(description_ffi).to_bytes(); callback(name, description) } let callback_data = Box::into_raw(Box::new(f)); sys::nbd_list_callback { callback: Some(call_closure::), user_data: callback_data as *mut _, free: Some(utils::drop_data::), } } pub(crate) unsafe fn context_to_raw(f: F) -> sys::nbd_context_callback where F: FnMut(&[u8]) -> c_int + Send + Sync, { unsafe extern "C" fn call_closure( data: *mut c_void, name_ffi: *const c_char, ) -> c_int where F: FnMut(&[u8]) -> c_int + Send + Sync, { let callback_ptr = data as *mut F; let callback = &mut *callback_ptr; let name: &[u8] = CStr::from_ptr(name_ffi).to_bytes(); callback(name) } let callback_data = Box::into_raw(Box::new(f)); sys::nbd_context_callback { callback: Some(call_closure::), user_data: callback_data as *mut _, free: Some(utils::drop_data::), } } impl Handle { /// set or clear the debug flag /// /// Set or clear the debug flag. When debugging is enabled, /// debugging messages from the library are printed to stderr, /// unless a debugging callback has been defined too /// (see [set_debug_callback](Handle::set_debug_callback)) in which case they are /// sent to that function. This flag defaults to false on /// newly created handles, except if `LIBNBD_DEBUG=1` is /// set in the environment in which case it defaults to true. #[allow(unused)] pub(crate) fn set_debug(&self, debug: bool) -> Result<()> { // Convert all arguments to FFI-like types. let debug_ffi = debug; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_debug(self.handle, debug_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// return the state of the debug flag /// /// Return the state of the debug flag on this handle. #[allow(unused)] pub(crate) fn get_debug(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_debug(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// set the debug callback /// /// Set the debug callback. This function is called when the library /// emits debug messages, when debugging is enabled on a handle. The /// callback parameters are `user_data` passed to this function, the /// name of the libnbd function emitting the debug message (`context`), /// and the message itself (`msg`). If no debug callback is set on /// a handle then messages are printed on `stderr`. /// /// The callback should not call `nbd_*` APIs on the same handle since it can /// be called while holding the handle lock and will cause a deadlock. #[allow(unused)] pub(crate) fn set_debug_callback( &self, debug: impl FnMut(&[u8], &[u8]) -> c_int + Send + Sync + 'static, ) -> Result<()> { // Convert all arguments to FFI-like types. let debug_ffi = unsafe { crate::bindings::debug_to_raw(debug) }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_debug_callback(self.handle, debug_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// clear the debug callback /// /// Remove the debug callback if one was previously associated /// with the handle (with [set_debug_callback](Handle::set_debug_callback)). If no /// callback was associated this does nothing. #[allow(unused)] pub(crate) fn clear_debug_callback(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_clear_debug_callback(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// statistics of bytes sent over connection so far /// /// Return the number of bytes that the client has sent to the server. /// /// This tracks the plaintext bytes utilized by the NBD protocol; it /// may differ from the number of bytes actually sent over the /// connection, particularly when TLS is in use. pub fn stats_bytes_sent(&self) -> u64 { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_stats_bytes_sent(self.handle) }; // Convert the result to something more rusty. ffi_ret as u64 } /// statistics of chunks sent over connection so far /// /// Return the number of chunks that the client has sent to the /// server, where a chunk is a group of bytes delineated by a magic /// number that cannot be further subdivided without breaking the /// protocol. /// /// This number does not necessarily relate to the number of API /// calls made, nor to the number of TCP packets sent over the /// connection. pub fn stats_chunks_sent(&self) -> u64 { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_stats_chunks_sent(self.handle) }; // Convert the result to something more rusty. ffi_ret as u64 } /// statistics of bytes received over connection so far /// /// Return the number of bytes that the client has received from the server. /// /// This tracks the plaintext bytes utilized by the NBD protocol; it /// may differ from the number of bytes actually received over the /// connection, particularly when TLS is in use. pub fn stats_bytes_received(&self) -> u64 { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_stats_bytes_received(self.handle) }; // Convert the result to something more rusty. ffi_ret as u64 } /// statistics of chunks received over connection so far /// /// Return the number of chunks that the client has received from the /// server, where a chunk is a group of bytes delineated by a magic /// number that cannot be further subdivided without breaking the /// protocol. /// /// This number does not necessarily relate to the number of API /// calls made, nor to the number of TCP packets received over the /// connection. pub fn stats_chunks_received(&self) -> u64 { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_stats_chunks_received(self.handle) }; // Convert the result to something more rusty. ffi_ret as u64 } /// set the handle name /// /// Handles have a name which is unique within the current process. /// The handle name is used in debug output. /// /// Handle names are normally generated automatically and have the /// form `"nbd1"`, `"nbd2"`, etc., but you can optionally use /// this call to give the handles a name which is meaningful for /// your application to make debugging output easier to understand. pub fn set_handle_name( &self, handle_name: impl Into>, ) -> Result<()> { // Convert all arguments to FFI-like types. let handle_name_buf = CString::new(handle_name.into()).map_err(|e| Error::from(e))?; let handle_name_ffi = handle_name_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_handle_name(self.handle, handle_name_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// get the handle name /// /// Get the name of the handle. If it was previously set by calling /// [set_handle_name](Handle::set_handle_name) then this returns the name that was set. /// Otherwise it will return a generic name like `"nbd1"`, /// `"nbd2"`, etc. pub fn get_handle_name(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_handle_name(self.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// set the per-handle private data /// /// Handles contain a private data field for applications to use /// for any purpose. /// /// When calling libnbd from C, the type of this field is `uintptr_t` so /// it can be used to store an unsigned integer or a pointer. /// /// In non-C bindings it can be used to store an unsigned integer. /// /// This function sets the value of this field and returns the old value /// (or 0 if it was not previously set). pub fn set_private_data(&self, private_data: usize) -> usize { // Convert all arguments to FFI-like types. let private_data_ffi = private_data; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_private_data(self.handle, private_data_ffi) }; // Convert the result to something more rusty. ffi_ret as usize } /// get the per-handle private data /// /// Return the value of the private data field set previously /// by a call to [set_private_data](Handle::set_private_data) /// (or 0 if it was not previously set). pub fn get_private_data(&self) -> usize { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_private_data(self.handle) }; // Convert the result to something more rusty. ffi_ret as usize } /// set the export name /// /// For servers which require an export name or can serve different /// content on different exports, set the `export_name` to /// connect to. The default is the empty string `""`. /// /// This is only relevant when connecting to servers using the /// newstyle protocol as the oldstyle protocol did not support /// export names. The NBD protocol limits export names to /// 4096 bytes, but servers may not support the full length. /// The encoding of export names is always UTF-8. /// /// When option mode is not in use, the export name must be set /// before beginning a connection. However, when [set_opt_mode](Handle::set_opt_mode) /// has enabled option mode, it is possible to change the export /// name prior to [opt_go](Handle::opt_go). In particular, the use of /// [opt_list](Handle::opt_list) during negotiation can be used to determine /// a name the server is likely to accept, and [opt_info](Handle::opt_info) can /// be used to learn details about an export before connecting. /// /// This call may be skipped if using [connect_uri](Handle::connect_uri) to connect /// to a URI that includes an export name. pub fn set_export_name( &self, export_name: impl Into>, ) -> Result<()> { // Convert all arguments to FFI-like types. let export_name_buf = CString::new(export_name.into()).map_err(|e| Error::from(e))?; let export_name_ffi = export_name_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_export_name(self.handle, export_name_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// get the export name /// /// Get the export name associated with the handle. This is the name /// that libnbd requests; see [get_canonical_export_name](Handle::get_canonical_export_name) for /// determining if the server has a different canonical name for the /// given export (most common when requesting the default export name /// of an empty string `""`) pub fn get_export_name(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_export_name(self.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// control whether NBD_OPT_GO requests block size /// /// By default, when connecting to an export, libnbd requests that the /// server report any block size restrictions. The NBD protocol states /// that a server may supply block sizes regardless of whether the client /// requests them, and libnbd will report those block sizes (see /// [get_block_size](Handle::get_block_size)); conversely, if a client does not request /// block sizes, the server may reject the connection instead of dealing /// with a client sending unaligned requests. This function makes it /// possible to test server behavior by emulating older clients. /// /// Note that even when block size is requested, the server is not /// obligated to provide any. Furthermore, if block sizes are provided /// (whether or not the client requested them), libnbd enforces alignment /// to those sizes unless [set_strict_mode](Handle::set_strict_mode) is used to bypass /// client-side safety checks. pub fn set_request_block_size(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_request_block_size(self.handle, request_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// see if NBD_OPT_GO requests block size /// /// Return the state of the block size request flag on this handle. pub fn get_request_block_size(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_request_block_size(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// control whether NBD_OPT_GO requests extra details /// /// By default, when connecting to an export, libnbd only requests the /// details it needs to service data operations. The NBD protocol says /// that a server can supply optional information, such as a canonical /// name of the export (see [get_canonical_export_name](Handle::get_canonical_export_name)) or /// a description of the export (see [get_export_description](Handle::get_export_description)), /// but that a hint from the client makes it more likely for this /// extra information to be provided. This function controls whether /// libnbd will provide that hint. /// /// Note that even when full info is requested, the server is not /// obligated to reply with all information that libnbd requested. /// Similarly, libnbd will ignore any optional server information that /// libnbd has not yet been taught to recognize. Furthermore, the /// hint to request block sizes is independently controlled via /// [set_request_block_size](Handle::set_request_block_size). pub fn set_full_info(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_full_info(self.handle, request_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// see if NBD_OPT_GO requests extra details /// /// Return the state of the full info request flag on this handle. pub fn get_full_info(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_full_info(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// return the canonical export name, if the server has one /// /// The NBD protocol permits a server to report an optional canonical /// export name, which may differ from the client's request (as set by /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri)). This function /// accesses any name returned by the server; it may be the same as /// the client request, but is more likely to differ when the client /// requested a connection to the default export name (an empty string /// `""`). /// /// Some servers are unlikely to report a canonical name unless the /// client specifically hinted about wanting it, via [set_full_info](Handle::set_full_info). pub fn get_canonical_export_name(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_canonical_export_name(self.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// return the export description, if the server has one /// /// The NBD protocol permits a server to report an optional export /// description. This function reports any description returned by /// the server. /// /// Some servers are unlikely to report a description unless the /// client specifically hinted about wanting it, via [set_full_info](Handle::set_full_info). /// For qemu-nbd(8), a description is set with -D. pub fn get_export_description(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_export_description(self.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// enable or require TLS (authentication and encryption) /// /// Enable or require TLS (authenticated and encrypted connections) to the /// NBD server. The possible settings are: /// /// /// - `LIBNBD_TLS_DISABLE` /// /// Disable TLS. (The default setting, unless using [connect_uri](Handle::connect_uri) with /// a URI that requires TLS). /// /// This setting is also necessary if you use [set_opt_mode](Handle::set_opt_mode) /// and want to interact in plaintext with a server that implements /// the NBD protocol's `SELECTIVETLS` mode, prior to enabling TLS /// with [opt_starttls](Handle::opt_starttls). Most NBD servers with TLS support /// prefer the NBD protocol's `FORCEDTLS` mode, so this sort of /// manual interaction tends to be useful mainly during integration /// testing. /// /// - `LIBNBD_TLS_ALLOW` /// /// Enable TLS if possible. /// /// This option is insecure (or best effort) in that in some cases /// it will fall back to an unencrypted and/or unauthenticated /// connection if TLS could not be established. Use /// `LIBNBD_TLS_REQUIRE` below if the connection must be /// encrypted. /// /// Some servers will drop the connection if TLS fails /// so fallback may not be possible. /// /// - `LIBNBD_TLS_REQUIRE` /// /// Require an encrypted and authenticated TLS connection. /// Always fail to connect if the connection is not encrypted /// and authenticated. /// /// /// As well as calling this you may also need to supply /// the path to the certificates directory ([set_tls_certificates](Handle::set_tls_certificates)), /// the username ([set_tls_username](Handle::set_tls_username)) and/or /// the Pre-Shared Keys (PSK) file ([set_tls_psk_file](Handle::set_tls_psk_file)). For now, /// when using [connect_uri](Handle::connect_uri), any URI query parameters related to /// TLS are not handled automatically. Setting the level higher than /// zero will fail if libnbd was not compiled against gnutls; you can /// test whether this is the case with [supports_tls](Handle::supports_tls). pub fn set_tls(&self, tls: Tls) -> Result<()> { // Convert all arguments to FFI-like types. let tls_ffi = tls as c_int; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls(self.handle, tls_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// get the TLS request setting /// /// Get the TLS request setting. /// /// Note: If you want to find out if TLS was actually negotiated /// on a particular connection use [get_tls_negotiated](Handle::get_tls_negotiated) instead. pub fn get_tls(&self) -> Tls { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_tls(self.handle) }; // Convert the result to something more rusty. unsafe { mem::transmute::(ffi_ret as isize) } } /// find out if TLS was negotiated on a connection /// /// After connecting you may call this to find out if the /// connection is using TLS. /// /// This is normally useful only if you set the TLS request mode /// to `LIBNBD_TLS_ALLOW` (see [set_tls](Handle::set_tls)), because in this /// mode we try to use TLS but fall back to unencrypted if it was /// not available. This function will tell you if TLS was /// negotiated or not. /// /// In `LIBNBD_TLS_REQUIRE` mode (the most secure) the connection /// would have failed if TLS could not be negotiated. With /// `LIBNBD_TLS_DISABLE` mode, TLS is not tried automatically; /// but if the NBD server uses the less-common `SELECTIVETLS` /// mode, this function reports whether a manual [opt_starttls](Handle::opt_starttls) /// enabled TLS or if the connection is still plaintext. pub fn get_tls_negotiated(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_tls_negotiated(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// set the path to the TLS certificates directory /// /// Set the path to the TLS certificates directory. If not /// set and TLS is used then a compiled in default is used. /// For root this is `/etc/pki/libnbd/`. For non-root this is /// `$HOME/.pki/libnbd` and `$HOME/.config/pki/libnbd`. If /// none of these directories can be found then the system /// trusted CAs are used. /// /// This function may be called regardless of whether TLS is /// supported, but will have no effect unless [set_tls](Handle::set_tls) /// is also used to request or require TLS. pub fn set_tls_certificates(&self, dir: impl Into) -> Result<()> { // Convert all arguments to FFI-like types. let dir_buf = CString::new(dir.into().into_os_string().into_vec()) .map_err(|e| Error::from(e))?; let dir_ffi = dir_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls_certificates(self.handle, dir_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set whether we verify the identity of the server /// /// Set this flag to control whether libnbd will verify the identity /// of the server from the server's certificate and the certificate /// authority. This defaults to true when connecting to TCP servers /// using TLS certificate authentication, and false otherwise. /// /// This function may be called regardless of whether TLS is /// supported, but will have no effect unless [set_tls](Handle::set_tls) /// is also used to request or require TLS. pub fn set_tls_verify_peer(&self, verify: bool) -> Result<()> { // Convert all arguments to FFI-like types. let verify_ffi = verify; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls_verify_peer(self.handle, verify_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// get whether we verify the identity of the server /// /// Get the verify peer flag. pub fn get_tls_verify_peer(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_tls_verify_peer(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// set the TLS username /// /// Set the TLS client username. This is used /// if authenticating with PSK over TLS is enabled. /// If not set then the local username is used. /// /// This function may be called regardless of whether TLS is /// supported, but will have no effect unless [set_tls](Handle::set_tls) /// is also used to request or require TLS. pub fn set_tls_username(&self, username: impl Into>) -> Result<()> { // Convert all arguments to FFI-like types. let username_buf = CString::new(username.into()).map_err(|e| Error::from(e))?; let username_ffi = username_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls_username(self.handle, username_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// get the current TLS username /// /// Get the current TLS username. pub fn get_tls_username(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_tls_username(self.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// set the TLS Pre-Shared Keys (PSK) filename /// /// Set the TLS Pre-Shared Keys (PSK) filename. This is used /// if trying to authenticate to the server using with a pre-shared /// key. There is no default so if this is not set then PSK /// authentication cannot be used to connect to the server. /// /// This function may be called regardless of whether TLS is /// supported, but will have no effect unless [set_tls](Handle::set_tls) /// is also used to request or require TLS. pub fn set_tls_psk_file(&self, filename: impl Into) -> Result<()> { // Convert all arguments to FFI-like types. let filename_buf = CString::new(filename.into().into_os_string().into_vec()) .map_err(|e| Error::from(e))?; let filename_ffi = filename_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_tls_psk_file(self.handle, filename_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// control use of extended headers /// /// By default, libnbd tries to negotiate extended headers with the /// server, as this protocol extension permits the use of 64-bit /// zero, trim, and block status actions. However, /// for integration testing, it can be useful to clear this flag /// rather than find a way to alter the server to fail the negotiation /// request. /// /// For backwards compatibility, the setting of this knob is ignored /// if [set_request_structured_replies](Handle::set_request_structured_replies) is also set to false, /// since the use of extended headers implies structured replies. pub fn set_request_extended_headers(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_request_extended_headers(self.handle, request_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// see if extended headers are attempted /// /// Return the state of the request extended headers flag on this /// handle. /// /// Note: If you want to find out if extended headers were actually /// negotiated on a particular connection use /// [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated) instead. pub fn get_request_extended_headers(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_request_extended_headers(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// see if extended headers are in use /// /// After connecting you may call this to find out if the connection is /// using extended headers. Note that this setting is sticky; this /// can return true even after a second [opt_extended_headers](Handle::opt_extended_headers) /// returns false because the server detected a duplicate request. /// /// When extended headers are not in use, commands are limited to a /// 32-bit length, even when the libnbd API uses a 64-bit parameter /// to express the length. But even when extended headers are /// supported, the server may enforce other limits, visible through /// [get_block_size](Handle::get_block_size). /// /// Note that when extended headers are negotiated, you should /// prefer the use of [block_status_64](Handle::block_status_64) instead of /// [block_status](Handle::block_status) if any of the meta contexts you requested /// via [add_meta_context](Handle::add_meta_context) might return 64-bit status /// values; however, all of the well-known meta contexts covered /// by current `LIBNBD_CONTEXT_*` constants only return 32-bit /// status. pub fn get_extended_headers_negotiated(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_extended_headers_negotiated(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// control use of structured replies /// /// By default, libnbd tries to negotiate structured replies with the /// server, as this protocol extension must be in use before /// [can_meta_context](Handle::can_meta_context) or [can_df](Handle::can_df) can return true. However, /// for integration testing, it can be useful to clear this flag /// rather than find a way to alter the server to fail the negotiation /// request. It is also useful to set this to false prior to using /// [set_opt_mode](Handle::set_opt_mode) if it is desired to control when to send /// [opt_structured_reply](Handle::opt_structured_reply) during negotiation. /// /// Note that setting this knob to false also disables any automatic /// request for extended headers. pub fn set_request_structured_replies(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_request_structured_replies(self.handle, request_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// see if structured replies are attempted /// /// Return the state of the request structured replies flag on this /// handle. /// /// Note: If you want to find out if structured replies were actually /// negotiated on a particular connection use /// [get_structured_replies_negotiated](Handle::get_structured_replies_negotiated) instead. pub fn get_request_structured_replies(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_request_structured_replies(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// see if structured replies are in use /// /// After connecting you may call this to find out if the connection is /// using structured replies. Note that this setting is sticky; this /// can return true even after a second [opt_structured_reply](Handle::opt_structured_reply) /// returns false because the server detected a duplicate request. /// /// Note that if the connection negotiates extended headers, this /// function returns true (as extended headers imply structured /// replies) even if no explicit request for structured replies was /// attempted. pub fn get_structured_replies_negotiated(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_structured_replies_negotiated(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// control whether connect automatically requests meta contexts /// /// This function controls whether the act of connecting to an export /// (all `nbd_connect_*` calls when [set_opt_mode](Handle::set_opt_mode) is false, /// or [opt_go](Handle::opt_go) and [opt_info](Handle::opt_info) when option mode is /// enabled) will also try to issue NBD_OPT_SET_META_CONTEXT when /// the server supports structured replies or extended headers and /// any contexts were registered by [add_meta_context](Handle::add_meta_context). The /// default setting is true; however the extra step of negotiating /// meta contexts is not always desirable: performing both info and /// go on the same export works without needing to re-negotiate /// contexts on the second call; integration testing of other servers /// may benefit from manual invocation of [opt_set_meta_context](Handle::opt_set_meta_context) /// at other times in the negotiation sequence; and even when using /// just [opt_info](Handle::opt_info), it can be faster to collect the server's /// results by relying on the callback function passed to /// [opt_list_meta_context](Handle::opt_list_meta_context) than a series of post-process /// calls to [can_meta_context](Handle::can_meta_context). /// /// Note that this control has no effect if the server does not /// negotiate structured replies or extended headers, or if the /// client did not request any contexts via [add_meta_context](Handle::add_meta_context). /// Setting this control to false may cause [block_status](Handle::block_status) /// to fail. pub fn set_request_meta_context(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_request_meta_context(self.handle, request_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// see if connect automatically requests meta contexts /// /// Return the state of the automatic meta context request flag on this handle. pub fn get_request_meta_context(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_request_meta_context(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// control use of handshake flags /// /// By default, libnbd tries to negotiate all possible handshake flags /// that are also supported by the server, since omitting a handshake /// flag can prevent the use of other functionality such as TLS encryption /// or structured replies. However, for integration testing, it can be /// useful to reduce the set of flags supported by the client to test that /// a particular server can handle various clients that were compliant to /// older versions of the NBD specification. /// /// The `flags` argument is a bitmask, including zero or more of the /// following handshake flags: /// /// /// - `LIBNBD_HANDSHAKE_FLAG_FIXED_NEWSTYLE` = 1 /// /// The server gracefully handles unknown option requests from the /// client, rather than disconnecting. Without this flag, a client /// cannot safely request to use extensions such as TLS encryption or /// structured replies, as the request may cause an older server to /// drop the connection. /// /// - `LIBNBD_HANDSHAKE_FLAG_NO_ZEROES` = 2 /// /// If the client is forced to use `NBD_OPT_EXPORT_NAME` instead of /// the preferred `NBD_OPT_GO`, this flag allows the server to send /// fewer all-zero padding bytes over the connection. /// /// /// For convenience, the constant `LIBNBD_HANDSHAKE_FLAG_MASK` is /// available to describe all flags supported by this build of libnbd. /// Future NBD extensions may add further flags, which in turn may /// be enabled by default in newer libnbd. As such, when attempting /// to disable only one specific bit, it is wiser to first call /// [get_handshake_flags](Handle::get_handshake_flags) and modify that value, rather than /// blindly setting a constant value. pub fn set_handshake_flags(&self, flags: HandshakeFlag) -> Result<()> { // Convert all arguments to FFI-like types. let flags_ffi = flags.bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_handshake_flags(self.handle, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// see which handshake flags are supported /// /// Return the state of the handshake flags on this handle. When the /// handle has not yet completed a connection (see [aio_is_created](Handle::aio_is_created)), /// this returns the flags that the client is willing to use, provided /// the server also advertises those flags. After the connection is /// ready (see [aio_is_ready](Handle::aio_is_ready)), this returns the flags that were /// actually agreed on between the server and client. If the NBD /// protocol defines new handshake flags, then the return value from /// a newer library version may include bits that were undefined at /// the time of compilation. pub fn get_handshake_flags(&self) -> HandshakeFlag { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_handshake_flags(self.handle) }; // Convert the result to something more rusty. HandshakeFlag::from_bits(ffi_ret).unwrap() } /// control whether libnbd pre-initializes read buffers /// /// By default, libnbd will pre-initialize the contents of a buffer /// passed to calls such as [pread](Handle::pread) to all zeroes prior to /// checking for any other errors, so that even if a client application /// passed in an uninitialized buffer but fails to check for errors, it /// will not result in a potential security risk caused by an accidental /// leak of prior heap contents (see CVE-2022-0485 in /// libnbd-security(3) for an example of a security hole in an /// application built against an earlier version of libnbd that lacked /// consistent pre-initialization). However, for a client application /// that has audited that an uninitialized buffer is never dereferenced, /// or which performs its own pre-initialization, libnbd's sanitization /// efforts merely pessimize performance (although the time spent in /// pre-initialization may pale in comparison to time spent waiting on /// network packets). /// /// Calling this function with `request` set to false tells libnbd to /// skip the buffer initialization step in read commands. pub fn set_pread_initialize(&self, request: bool) -> Result<()> { // Convert all arguments to FFI-like types. let request_ffi = request; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_pread_initialize(self.handle, request_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// see whether libnbd pre-initializes read buffers /// /// Return whether libnbd performs a pre-initialization of a buffer passed /// to [pread](Handle::pread) and similar to all zeroes, as set by /// [set_pread_initialize](Handle::set_pread_initialize). pub fn get_pread_initialize(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_pread_initialize(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// control how strictly to follow NBD protocol /// /// By default, libnbd tries to detect requests that would trigger /// undefined behavior in the NBD protocol, and rejects them client /// side without causing any network traffic, rather than risking /// undefined server behavior. However, for integration testing, it /// can be handy to relax the strictness of libnbd, to coerce it into /// sending such requests over the network for testing the robustness /// of the server in dealing with such traffic. /// /// The `flags` argument is a bitmask, including zero or more of the /// following strictness flags: /// /// /// - `LIBNBD_STRICT_COMMANDS` = 0x1 /// /// If set, this flag rejects client requests that do not comply with the /// set of advertised server flags (for example, attempting a write on /// a read-only server, or attempting to use `LIBNBD_CMD_FLAG_FUA` when /// [can_fua](Handle::can_fua) returned false). If clear, this flag relies on the /// server to reject unexpected commands. /// /// - `LIBNBD_STRICT_FLAGS` = 0x2 /// /// If set, this flag rejects client requests that attempt to set a /// command flag not recognized by libnbd (those outside of /// `LIBNBD_CMD_FLAG_MASK`), or a flag not normally associated with /// a command (such as using `LIBNBD_CMD_FLAG_FUA` on a read command). /// If clear, all flags are sent on to the server, even if sending such /// a flag may cause the server to change its reply in a manner that /// confuses libnbd, perhaps causing deadlock or ending the connection. /// /// Flags that are known by libnbd as associated with a given command /// (such as `LIBNBD_CMD_FLAG_DF` for [pread_structured](Handle::pread_structured) gated /// by [can_df](Handle::can_df)) are controlled by `LIBNBD_STRICT_COMMANDS` /// instead; and `LIBNBD_CMD_FLAG_PAYLOAD_LEN` is managed automatically /// by libnbd unless `LIBNBD_STRICT_AUTO_FLAG` is disabled. /// /// Note that the NBD protocol only supports 16 bits of command flags, /// even though the libnbd API uses `uint32_t`; bits outside of the /// range permitted by the protocol are always a client-side error. /// /// - `LIBNBD_STRICT_BOUNDS` = 0x4 /// /// If set, this flag rejects client requests that would exceed the export /// bounds without sending any traffic to the server. If clear, this flag /// relies on the server to detect out-of-bounds requests. /// /// - `LIBNBD_STRICT_ZERO_SIZE` = 0x8 /// /// If set, this flag rejects client requests with length 0. If clear, /// this permits zero-length requests to the server, which may produce /// undefined results. /// /// - `LIBNBD_STRICT_ALIGN` = 0x10 /// /// If set, and the server provided minimum block sizes (see /// `LIBNBD_SIZE_MINIMUM` for [get_block_size](Handle::get_block_size)), this /// flag rejects client requests that do not have length and offset /// aligned to the server's minimum requirements. If clear, /// unaligned requests are sent to the server, where it is up to /// the server whether to honor or reject the request. /// /// - `LIBNBD_STRICT_PAYLOAD` = 0x20 /// /// If set, the client refuses to send a command to the server /// with more than libnbd's outgoing payload maximum (see /// `LIBNBD_SIZE_PAYLOAD` for [get_block_size](Handle::get_block_size)), whether /// or not the server advertised a block size maximum. If clear, /// oversize requests up to 64MiB may be attempted, although /// requests larger than 32MiB are liable to cause some servers to /// disconnect. /// /// - `LIBNBD_STRICT_AUTO_FLAG` = 0x40 /// /// If set, commands that accept the `LIBNBD_CMD_FLAG_PAYLOAD_LEN` /// flag (such as [pwrite](Handle::pwrite) and `nbd_block_status_filter(3)`) /// ignore the presence or absence of that flag from the caller, /// instead sending the value over the wire that matches the /// server's expectations based on whether extended headers were /// negotiated when the connection was made. If clear, the caller /// takes on the responsibility for whether the payload length /// flag is set or clear during the affected command, which can /// be useful during integration testing but is more likely to /// lead to undefined behavior. /// /// /// For convenience, the constant `LIBNBD_STRICT_MASK` is available to /// describe all strictness flags supported by this build of libnbd. /// Future versions of libnbd may add further flags, which are likely /// to be enabled by default for additional client-side filtering. As /// such, when attempting to relax only one specific bit while keeping /// remaining checks at the client side, it is wiser to first call /// [get_strict_mode](Handle::get_strict_mode) and modify that value, rather than /// blindly setting a constant value. pub fn set_strict_mode(&self, flags: Strict) -> Result<()> { // Convert all arguments to FFI-like types. let flags_ffi = flags.bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_strict_mode(self.handle, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// see which strictness flags are in effect /// /// Return flags indicating which protocol strictness items are being /// enforced locally by libnbd rather than the server. The return value /// from a newer library version may include bits that were undefined at /// the time of compilation. pub fn get_strict_mode(&self) -> Strict { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_strict_mode(self.handle) }; // Convert the result to something more rusty. Strict::from_bits(ffi_ret).unwrap() } /// control option mode, for pausing during option negotiation /// /// Set this flag to true in order to request that a connection command /// `nbd_connect_*` will pause for negotiation options rather than /// proceeding all the way to the ready state, when communicating with a /// newstyle server. This setting has no effect when connecting to an /// oldstyle server. /// /// Note that libnbd defaults to attempting `NBD_OPT_STARTTLS`, /// `NBD_OPT_EXTENDED_HEADERS`, and `NBD_OPT_STRUCTURED_REPLY` /// before letting you control remaining negotiation steps; if you /// need control over these steps as well, first set [set_tls](Handle::set_tls) /// to `LIBNBD_TLS_DISABLE`, and [set_request_extended_headers](Handle::set_request_extended_headers) /// or [set_request_structured_replies](Handle::set_request_structured_replies) to false, before /// starting the connection attempt. /// /// When option mode is enabled, you have fine-grained control over which /// options are negotiated, compared to the default of the server /// negotiating everything on your behalf using settings made before /// starting the connection. To leave the mode and proceed on to the /// ready state, you must use [opt_go](Handle::opt_go) successfully; a failed /// [opt_go](Handle::opt_go) returns to the negotiating state to allow a change of /// export name before trying again. You may also use [opt_abort](Handle::opt_abort) /// or [shutdown](Handle::shutdown) to end the connection without finishing /// negotiation. pub fn set_opt_mode(&self, enable: bool) -> Result<()> { // Convert all arguments to FFI-like types. let enable_ffi = enable; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_opt_mode(self.handle, enable_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// return whether option mode was enabled /// /// Return true if option negotiation mode was enabled on this handle. pub fn get_opt_mode(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_opt_mode(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// end negotiation and move on to using an export /// /// Request that the server finish negotiation and move on to serving the /// export previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// By default, libnbd will automatically request all meta contexts /// registered by [add_meta_context](Handle::add_meta_context) as part of this call; but /// this can be suppressed with [set_request_meta_context](Handle::set_request_meta_context), /// particularly if [opt_set_meta_context](Handle::opt_set_meta_context) was used earlier /// in the negotiation sequence. /// /// If this fails, the server may still be in negotiation, where it is /// possible to attempt another option such as a different export name; /// although older servers will instead have killed the connection. pub fn opt_go(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_go(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// end negotiation and close the connection /// /// Request that the server finish negotiation, gracefully if possible, then /// close the connection. This can only be used if [set_opt_mode](Handle::set_opt_mode) /// enabled option mode. pub fn opt_abort(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_abort(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server to initiate TLS /// /// Request that the server initiate a secure TLS connection, by /// sending `NBD_OPT_STARTTLS`. This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode; furthermore, if you /// use [set_tls](Handle::set_tls) to request anything other than the default /// of `LIBNBD_TLS_DISABLE`, then libnbd will have already attempted /// a TLS connection prior to allowing you control over option /// negotiation. This command is disabled if [supports_tls](Handle::supports_tls) /// reports false. /// /// This function is mainly useful for integration testing of corner /// cases in server handling; in particular, misuse of this function /// when coupled with a server that is not careful about resetting /// stateful commands such as [opt_structured_reply](Handle::opt_structured_reply) could /// result in a security hole (see CVE-2021-3716 against nbdkit, for /// example). Thus, when security is a concern, you should instead /// prefer to use [set_tls](Handle::set_tls) with `LIBNBD_TLS_REQUIRE` and /// let libnbd negotiate TLS automatically. /// /// This function returns true if the server replies with success, /// false if the server replies with an error, and fails only if /// the server does not reply (such as for a loss of connection, /// which can include when the server rejects credentials supplied /// during the TLS handshake). Note that the NBD protocol documents /// that requesting TLS after it is already enabled is a client /// error; most servers will gracefully fail a second request, but /// that does not downgrade a TLS session that has already been /// established, as reported by [get_tls_negotiated](Handle::get_tls_negotiated). pub fn opt_starttls(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_starttls(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// request the server to enable extended headers /// /// Request that the server use extended headers, by sending /// `NBD_OPT_EXTENDED_HEADERS`. This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode; furthermore, libnbd /// defaults to automatically requesting this unless you use /// [set_request_extended_headers](Handle::set_request_extended_headers) or /// [set_request_structured_replies](Handle::set_request_structured_replies) prior to connecting. /// This function is mainly useful for integration testing of corner /// cases in server handling. /// /// This function returns true if the server replies with success, /// false if the server replies with an error, and fails only if /// the server does not reply (such as for a loss of connection). /// Note that some servers fail a second request as redundant; /// libnbd assumes that once one request has succeeded, then /// extended headers are supported (as visible by /// [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated)) regardless if /// later calls to this function return false. If this function /// returns true, the use of structured replies is implied. pub fn opt_extended_headers(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_extended_headers(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// request the server to enable structured replies /// /// Request that the server use structured replies, by sending /// `NBD_OPT_STRUCTURED_REPLY`. This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode; furthermore, libnbd /// defaults to automatically requesting this unless you use /// [set_request_structured_replies](Handle::set_request_structured_replies) prior to connecting. /// This function is mainly useful for integration testing of corner /// cases in server handling. /// /// This function returns true if the server replies with success, /// false if the server replies with an error, and fails only if /// the server does not reply (such as for a loss of connection). /// Note that some servers fail a second request as redundant; /// libnbd assumes that once one request has succeeded, then /// structured replies are supported (as visible by /// [get_structured_replies_negotiated](Handle::get_structured_replies_negotiated)) regardless if /// later calls to this function return false. Similarly, a /// server may fail this request if extended headers are already /// negotiated, since extended headers take priority. pub fn opt_structured_reply(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_structured_reply(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// request the server to list all exports during negotiation /// /// Request that the server list all exports that it supports. This can /// only be used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// The `list` function is called once per advertised export, with any /// `user_data` passed to this function, and with `name` and `description` /// supplied by the server. Many servers omit descriptions, in which /// case `description` will be an empty string. Remember that it is not /// safe to call [set_export_name](Handle::set_export_name) from within the context of the /// callback function; rather, your code must copy any `name` needed for /// later use after this function completes. At present, the return value /// of the callback is ignored, although a return of -1 should be avoided. /// /// For convenience, when this function succeeds, it returns the number /// of exports that were advertised by the server. /// /// Not all servers understand this request, and even when it is understood, /// the server might intentionally send an empty list to avoid being an /// information leak, may encounter a failure after delivering partial /// results, or may refuse to answer more than one query per connection /// in the interest of avoiding negotiation that does not resolve. Thus, /// this function may succeed even when no exports are reported, or may /// fail but have a non-empty list. Likewise, the NBD protocol does not /// specify an upper bound for the number of exports that might be /// advertised, so client code should be aware that a server may send a /// lengthy list. /// /// For nbd-server(1) you will need to allow clients to make /// list requests by adding `allowlist=true` to the `[generic]` /// section of /etc/nbd-server/config. For qemu-nbd(8), a /// description is set with -D. pub fn opt_list( &self, list: impl FnMut(&[u8], &[u8]) -> c_int + Send + Sync + 'static, ) -> Result { // Convert all arguments to FFI-like types. let list_ffi = unsafe { crate::bindings::list_to_raw(list) }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_list(self.handle, list_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// request the server for information about an export /// /// Request that the server supply information about the export name /// previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// If successful, functions like [is_read_only](Handle::is_read_only) and /// [get_size](Handle::get_size) will report details about that export. If /// [set_request_meta_context](Handle::set_request_meta_context) is set (the default) and /// structured replies or extended headers were negotiated, it is also /// valid to use [can_meta_context](Handle::can_meta_context) after this call. However, /// it may be more efficient to clear that setting and manually /// utilize [opt_list_meta_context](Handle::opt_list_meta_context) with its callback approach, /// for learning which contexts an export supports. In general, if /// [opt_go](Handle::opt_go) is called next, that call will likely succeed /// with the details remaining the same, although this is not /// guaranteed by all servers. /// /// Not all servers understand this request, and even when it is /// understood, the server might fail the request even when a /// corresponding [opt_go](Handle::opt_go) would succeed. pub fn opt_info(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_info(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// list available meta contexts, using implicit query list /// /// Request that the server list available meta contexts associated with /// the export previously specified by the most recent /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri), and with a /// list of queries from prior calls to [add_meta_context](Handle::add_meta_context) /// (see [opt_list_meta_context_queries](Handle::opt_list_meta_context_queries) if you want to supply /// an explicit query list instead). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// The NBD protocol allows a client to decide how many queries to ask /// the server. Rather than taking that list of queries as a parameter /// to this function, libnbd reuses the current list of requested meta /// contexts as set by [add_meta_context](Handle::add_meta_context); you can use /// [clear_meta_contexts](Handle::clear_meta_contexts) to set up a different list of queries. /// When the list is empty, a server will typically reply with all /// contexts that it supports; when the list is non-empty, the server /// will reply only with supported contexts that match the client's /// request. Note that a reply by the server might be encoded to /// represent several feasible contexts within one string, rather than /// multiple strings per actual context name that would actually succeed /// during [opt_go](Handle::opt_go); so it is still necessary to use /// [can_meta_context](Handle::can_meta_context) after connecting to see which contexts /// are actually supported. /// /// The `context` function is called once per server reply, with any /// `user_data` passed to this function, and with `name` supplied by /// the server. Remember that it is not safe to call /// [add_meta_context](Handle::add_meta_context) from within the context of the /// callback function; rather, your code must copy any `name` needed for /// later use after this function completes. At present, the return value /// of the callback is ignored, although a return of -1 should be avoided. /// /// For convenience, when this function succeeds, it returns the number /// of replies returned by the server. /// /// Not all servers understand this request, and even when it is understood, /// the server might intentionally send an empty list because it does not /// support the requested context, or may encounter a failure after /// delivering partial results. Thus, this function may succeed even when /// no contexts are reported, or may fail but have a non-empty list. Likewise, /// the NBD protocol does not specify an upper bound for the number of /// replies that might be advertised, so client code should be aware that /// a server may send a lengthy list. pub fn opt_list_meta_context( &self, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, ) -> Result { // Convert all arguments to FFI-like types. let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_list_meta_context(self.handle, context_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// list available meta contexts, using explicit query list /// /// Request that the server list available meta contexts associated with /// the export previously specified by the most recent /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri), and with an /// explicit list of queries provided as a parameter (see /// [opt_list_meta_context](Handle::opt_list_meta_context) if you want to reuse an /// implicit query list instead). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// The NBD protocol allows a client to decide how many queries to ask /// the server. For this function, the list is explicit in the `queries` /// parameter. When the list is empty, a server will typically reply with all /// contexts that it supports; when the list is non-empty, the server /// will reply only with supported contexts that match the client's /// request. Note that a reply by the server might be encoded to /// represent several feasible contexts within one string, rather than /// multiple strings per actual context name that would actually succeed /// during [opt_go](Handle::opt_go); so it is still necessary to use /// [can_meta_context](Handle::can_meta_context) after connecting to see which contexts /// are actually supported. /// /// The `context` function is called once per server reply, with any /// `user_data` passed to this function, and with `name` supplied by /// the server. Remember that it is not safe to call /// [add_meta_context](Handle::add_meta_context) from within the context of the /// callback function; rather, your code must copy any `name` needed for /// later use after this function completes. At present, the return value /// of the callback is ignored, although a return of -1 should be avoided. /// /// For convenience, when this function succeeds, it returns the number /// of replies returned by the server. /// /// Not all servers understand this request, and even when it is understood, /// the server might intentionally send an empty list because it does not /// support the requested context, or may encounter a failure after /// delivering partial results. Thus, this function may succeed even when /// no contexts are reported, or may fail but have a non-empty list. Likewise, /// the NBD protocol does not specify an upper bound for the number of /// replies that might be advertised, so client code should be aware that /// a server may send a lengthy list. pub fn opt_list_meta_context_queries( &self, queries: impl IntoIterator>, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, ) -> Result { // Convert all arguments to FFI-like types. let queries_ffi_c_strs: Vec = queries .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut queries_ffi_ptrs: Vec<*mut c_char> = queries_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); queries_ffi_ptrs.push(ptr::null_mut()); let queries_ffi = queries_ffi_ptrs.as_mut_ptr(); let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_list_meta_context_queries( self.handle, queries_ffi, context_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// select specific meta contexts, using implicit query list /// /// Request that the server supply all recognized meta contexts /// registered through prior calls to [add_meta_context](Handle::add_meta_context), in /// conjunction with the export previously specified by the most /// recent [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri). /// This can only be used if [set_opt_mode](Handle::set_opt_mode) enabled option /// mode. Normally, this function is redundant, as [opt_go](Handle::opt_go) /// automatically does the same task if structured replies or extended /// headers have already been negotiated. But manual control over /// meta context requests can be useful for fine-grained testing of /// how a server handles unusual negotiation sequences. Often, use /// of this function is coupled with [set_request_meta_context](Handle::set_request_meta_context) /// to bypass the automatic context request normally performed by /// [opt_go](Handle::opt_go). /// /// The NBD protocol allows a client to decide how many queries to ask /// the server. Rather than taking that list of queries as a parameter /// to this function, libnbd reuses the current list of requested meta /// contexts as set by [add_meta_context](Handle::add_meta_context); you can use /// [clear_meta_contexts](Handle::clear_meta_contexts) to set up a different list of queries /// (see [opt_set_meta_context_queries](Handle::opt_set_meta_context_queries) to pass an explicit /// list of contexts instead). Since this function is primarily /// designed for testing servers, libnbd does not prevent the use /// of this function on an empty list or when /// [set_request_structured_replies](Handle::set_request_structured_replies) has disabled structured /// replies, in order to see how a server behaves. /// /// The `context` function is called once per server reply, with any /// `user_data` passed to this function, and with `name` supplied by /// the server. Additionally, each server name will remain visible through /// [can_meta_context](Handle::can_meta_context) until the next attempt at /// [set_export_name](Handle::set_export_name) or [opt_set_meta_context](Handle::opt_set_meta_context), as /// well as [opt_go](Handle::opt_go) or [opt_info](Handle::opt_info) that trigger an /// automatic meta context request. Remember that it is not safe to /// call any `nbd_*` APIs from within the context of the callback /// function. At present, the return value of the callback is /// ignored, although a return of -1 should be avoided. /// /// For convenience, when this function succeeds, it returns the number /// of replies returned by the server. /// /// Not all servers understand this request, and even when it is understood, /// the server might intentionally send an empty list because it does not /// support the requested context, or may encounter a failure after /// delivering partial results. Thus, this function may succeed even when /// no contexts are reported, or may fail but have a non-empty list. pub fn opt_set_meta_context( &self, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, ) -> Result { // Convert all arguments to FFI-like types. let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_set_meta_context(self.handle, context_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// select specific meta contexts, using explicit query list /// /// Request that the server supply all recognized meta contexts /// passed in through `queries`, in conjunction with the export /// previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. Normally, this /// function is redundant, as [opt_go](Handle::opt_go) automatically does /// the same task if structured replies or extended headers have /// already been negotiated. But manual control over meta context /// requests can be useful for fine-grained testing of how a server /// handles unusual negotiation sequences. Often, use of this /// function is coupled with [set_request_meta_context](Handle::set_request_meta_context) to /// bypass the automatic context request normally performed by /// [opt_go](Handle::opt_go). /// /// The NBD protocol allows a client to decide how many queries to ask /// the server. This function takes an explicit list of queries; to /// instead reuse an implicit list, see [opt_set_meta_context](Handle::opt_set_meta_context). /// Since this function is primarily designed for testing servers, /// libnbd does not prevent the use of this function on an empty /// list or when [set_request_structured_replies](Handle::set_request_structured_replies) has /// disabled structured replies, in order to see how a server behaves. /// /// The `context` function is called once per server reply, with any /// `user_data` passed to this function, and with `name` supplied by /// the server. Additionally, each server name will remain visible through /// [can_meta_context](Handle::can_meta_context) until the next attempt at /// [set_export_name](Handle::set_export_name) or [opt_set_meta_context](Handle::opt_set_meta_context), as /// well as [opt_go](Handle::opt_go) or [opt_info](Handle::opt_info) that trigger an /// automatic meta context request. Remember that it is not safe to /// call any `nbd_*` APIs from within the context of the callback /// function. At present, the return value of the callback is /// ignored, although a return of -1 should be avoided. /// /// For convenience, when this function succeeds, it returns the number /// of replies returned by the server. /// /// Not all servers understand this request, and even when it is understood, /// the server might intentionally send an empty list because it does not /// support the requested context, or may encounter a failure after /// delivering partial results. Thus, this function may succeed even when /// no contexts are reported, or may fail but have a non-empty list. pub fn opt_set_meta_context_queries( &self, queries: impl IntoIterator>, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, ) -> Result { // Convert all arguments to FFI-like types. let queries_ffi_c_strs: Vec = queries .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut queries_ffi_ptrs: Vec<*mut c_char> = queries_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); queries_ffi_ptrs.push(ptr::null_mut()); let queries_ffi = queries_ffi_ptrs.as_mut_ptr(); let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_opt_set_meta_context_queries( self.handle, queries_ffi, context_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// ask server to negotiate metadata context /// /// During connection libnbd can negotiate zero or more metadata /// contexts with the server. Metadata contexts are features (such /// as `"base:allocation"`) which describe information returned /// by the [block_status_64](Handle::block_status_64) command (for `"base:allocation"` /// this is whether blocks of data are allocated, zero or sparse). /// /// This call adds one metadata context to the list to be negotiated. /// You can call it as many times as needed. The list is initially /// empty when the handle is created; you can check the contents of /// the list with [get_nr_meta_contexts](Handle::get_nr_meta_contexts) and /// [get_meta_context](Handle::get_meta_context), or clear it with /// [clear_meta_contexts](Handle::clear_meta_contexts). /// /// The NBD protocol limits meta context names to 4096 bytes, but /// servers may not support the full length. The encoding of meta /// context names is always UTF-8. /// /// Not all servers support all metadata contexts. To learn if a context /// was actually negotiated, call [can_meta_context](Handle::can_meta_context) after /// connecting. /// /// The single parameter is the name of the metadata context, /// for example `LIBNBD_CONTEXT_BASE_ALLOCATION`. /// Elibnbd.h>> includes defined constants beginning with /// `LIBNBD_CONTEXT_` for some well-known contexts, but you are free /// to pass in other contexts. /// /// Other metadata contexts are server-specific, but include /// `"qemu:dirty-bitmap:..."` and `"qemu:allocation-depth"` for /// qemu-nbd (see qemu-nbd -B and -A options). pub fn add_meta_context(&self, name: impl Into>) -> Result<()> { // Convert all arguments to FFI-like types. let name_buf = CString::new(name.into()).map_err(|e| Error::from(e))?; let name_ffi = name_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_add_meta_context(self.handle, name_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// return the current number of requested meta contexts /// /// During connection libnbd can negotiate zero or more metadata /// contexts with the server. Metadata contexts are features (such /// as `"base:allocation"`) which describe information returned /// by the [block_status_64](Handle::block_status_64) command (for `"base:allocation"` /// this is whether blocks of data are allocated, zero or sparse). /// /// This command returns how many meta contexts have been added to /// the list to request from the server via [add_meta_context](Handle::add_meta_context). /// The server is not obligated to honor all of the requests; to see /// what it actually supports, see [can_meta_context](Handle::can_meta_context). pub fn get_nr_meta_contexts(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_nr_meta_contexts(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// return the i'th meta context request /// /// During connection libnbd can negotiate zero or more metadata /// contexts with the server. Metadata contexts are features (such /// as `"base:allocation"`) which describe information returned /// by the [block_status_64](Handle::block_status_64) command (for `"base:allocation"` /// this is whether blocks of data are allocated, zero or sparse). /// /// This command returns the i'th meta context request, as added by /// [add_meta_context](Handle::add_meta_context), and bounded by /// [get_nr_meta_contexts](Handle::get_nr_meta_contexts). pub fn get_meta_context(&self, i: usize) -> Result> { // Convert all arguments to FFI-like types. let i_ffi = i; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_meta_context(self.handle, i_ffi) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// reset the list of requested meta contexts /// /// During connection libnbd can negotiate zero or more metadata /// contexts with the server. Metadata contexts are features (such /// as `"base:allocation"`) which describe information returned /// by the [block_status_64](Handle::block_status_64) command (for `"base:allocation"` /// this is whether blocks of data are allocated, zero or sparse). /// /// This command resets the list of meta contexts to request back to /// an empty list, for re-population by further use of /// [add_meta_context](Handle::add_meta_context). It is primarily useful when option /// negotiation mode is selected (see [set_opt_mode](Handle::set_opt_mode)), for /// altering the list of attempted contexts between subsequent export /// queries. pub fn clear_meta_contexts(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_clear_meta_contexts(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the allowed transports in NBD URIs /// /// Set which transports are allowed to appear in NBD URIs. The /// default is to allow any transport. /// /// The `mask` parameter may contain any of the following flags /// ORed together: /// /// /// - `LIBNBD_ALLOW_TRANSPORT_TCP` = 0x1 /// /// - `LIBNBD_ALLOW_TRANSPORT_UNIX` = 0x2 /// /// - `LIBNBD_ALLOW_TRANSPORT_VSOCK` = 0x4 /// /// /// For convenience, the constant `LIBNBD_ALLOW_TRANSPORT_MASK` is /// available to describe all transports recognized by this build of /// libnbd. A future version of the library may add new flags. pub fn set_uri_allow_transports(&self, mask: AllowTransport) -> Result<()> { // Convert all arguments to FFI-like types. let mask_ffi = mask.bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_uri_allow_transports(self.handle, mask_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the allowed TLS settings in NBD URIs /// /// Set which TLS settings are allowed to appear in NBD URIs. The /// default is to allow either non-TLS or TLS URIs. /// /// The `tls` parameter can be: /// /// /// - `LIBNBD_TLS_DISABLE` /// /// TLS URIs are not permitted, ie. a URI such as `nbds://...` /// will be rejected. /// /// - `LIBNBD_TLS_ALLOW` /// /// This is the default. TLS may be used or not, depending on /// whether the URI uses `nbds` or `nbd`. /// /// - `LIBNBD_TLS_REQUIRE` /// /// TLS URIs are required. All URIs must use `nbds`. /// pub fn set_uri_allow_tls(&self, tls: Tls) -> Result<()> { // Convert all arguments to FFI-like types. let tls_ffi = tls as c_int; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_uri_allow_tls(self.handle, tls_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the allowed transports in NBD URIs /// /// Allow NBD URIs to reference local files. This is disabled /// by default. /// /// Currently this setting only controls whether the `tls-psk-file` /// parameter in NBD URIs is allowed. pub fn set_uri_allow_local_file(&self, allow: bool) -> Result<()> { // Convert all arguments to FFI-like types. let allow_ffi = allow; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_uri_allow_local_file(self.handle, allow_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to NBD URI /// /// Connect (synchronously) to an NBD server and export by specifying /// the NBD URI. NBD URIs are a standard way to specify a network /// block device endpoint, using a syntax like /// `"nbd://example.com"` which is convenient, well defined and /// future proof. /// /// This call works by parsing the URI parameter and calling /// [set_export_name](Handle::set_export_name) and [set_tls](Handle::set_tls) and other /// calls as needed, followed by [connect_tcp](Handle::connect_tcp), /// [connect_unix](Handle::connect_unix) or [connect_vsock](Handle::connect_vsock). /// /// /// This call returns when the connection has been made. By default, /// this proceeds all the way to transmission phase, but /// [set_opt_mode](Handle::set_opt_mode) can be used for manual control over /// option negotiation performed before transmission phase. /// /// ## Example URIs supported /// /// /// - `nbd://example.com` /// /// Connect over TCP, unencrypted, to `example.com` port 10809. /// /// - `nbds://example.com` /// /// Connect over TCP with TLS, to `example.com` port 10809. If /// the server does not support TLS then this will fail. /// /// - `nbd+unix:///foo?socket=/tmp/nbd.sock` /// /// Connect over the Unix domain socket /tmp/nbd.sock to /// an NBD server running locally. The export name is set to `foo` /// (note without any leading `/` character). /// /// - `nbds+unix://alice@/?socket=/tmp/nbd.sock&tls-certificates=certs` /// /// Connect over a Unix domain socket, enabling TLS and setting the /// path to a directory containing certificates and keys. /// /// - `nbd+vsock:///` /// /// In this scenario libnbd is running in a virtual machine. Connect /// over `AF_VSOCK` to an NBD server running on the hypervisor. /// /// /// ## Supported URI formats /// /// The following schemes are supported in the current version /// of libnbd: /// /// /// - `nbd:` /// /// Connect over TCP without using TLS. /// /// - `nbds:` /// /// Connect over TCP. TLS is required and the connection /// will fail if the server does not support TLS. /// /// - `nbd+unix:` /// /// - `nbds+unix:` /// /// Connect over a Unix domain socket, without or with TLS /// respectively. The `socket` parameter is required. /// /// - `nbd+vsock:` /// /// - `nbds+vsock:` /// /// Connect over the `AF_VSOCK` transport, without or with /// TLS respectively. You can use [supports_vsock](Handle::supports_vsock) to /// see if this build of libnbd supports `AF_VSOCK`. /// /// /// The authority part of the URI (`[username@][servername][:port]`) /// is parsed depending on the transport. For TCP it specifies the /// server to connect to and optional port number. For `+unix` /// it should not be present. For `+vsock` the server name is the /// numeric CID (eg. `2` to connect to the host), and the optional /// port number may be present. If the `username` is present it /// is used for TLS authentication. /// /// For all transports, an export name may be present, parsed in /// accordance with the NBD URI specification. /// /// Finally the query part of the URI can contain: /// /// /// - socket=SOCKET /// /// Specifies the Unix domain socket to connect on. /// Must be present for the `+unix` transport and must not /// be present for the other transports. /// /// - tls-certificates=DIR /// /// Set the certificates directory. See [set_tls_certificates](Handle::set_tls_certificates). /// Note this is not allowed by default - see next section. /// /// - tls-psk-file=PSKFILE /// /// Set the PSK file. See [set_tls_psk_file](Handle::set_tls_psk_file). Note /// this is not allowed by default - see next section. /// /// - tls-verify-peer=false /// /// Do not verify the server certificate. See [set_tls_verify_peer](Handle::set_tls_verify_peer). /// The default is `true`. /// /// /// ## Disable URI features /// /// For security reasons you might want to disable certain URI /// features. Pre-filtering URIs is error-prone and should not /// be attempted. Instead use the libnbd APIs below to control /// what can appear in URIs. Note you must call these functions /// on the same handle before calling [connect_uri](Handle::connect_uri) or /// [aio_connect_uri](Handle::aio_connect_uri). /// /// /// - TCP, Unix domain socket or `AF_VSOCK` transports /// /// Default: all allowed /// /// To select which transports are allowed call /// [set_uri_allow_transports](Handle::set_uri_allow_transports). /// /// - TLS /// /// Default: both non-TLS and TLS connections allowed /// /// To force TLS off or on in URIs call /// [set_uri_allow_tls](Handle::set_uri_allow_tls). /// /// - Connect to Unix domain socket in the local filesystem /// /// Default: allowed /// /// To prevent this you must disable the `+unix` transport /// using [set_uri_allow_transports](Handle::set_uri_allow_transports). /// /// - Read from local files /// /// Default: denied /// /// To allow URIs to contain references to local files /// (eg. for parameters like `tls-psk-file`) call /// [set_uri_allow_local_file](Handle::set_uri_allow_local_file). /// /// /// ## Overriding the export name /// /// It is possible to override the export name portion of a URI /// by using [set_opt_mode](Handle::set_opt_mode) to enable option mode, /// then using [set_export_name](Handle::set_export_name) and [opt_go](Handle::opt_go) /// as part of subsequent negotiation. /// /// ## Optional features /// /// This call will fail if libnbd was not compiled with libxml2; you can /// test whether this is the case with [supports_uri](Handle::supports_uri). /// /// Support for URIs that require TLS will fail if libnbd was not /// compiled with gnutls; you can test whether this is the case /// with [supports_tls](Handle::supports_tls). /// /// ## Constructing a URI from an existing connection /// /// See [get_uri](Handle::get_uri). pub fn connect_uri(&self, uri: impl Into>) -> Result<()> { // Convert all arguments to FFI-like types. let uri_buf = CString::new(uri.into()).map_err(|e| Error::from(e))?; let uri_ffi = uri_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_connect_uri(self.handle, uri_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to NBD server over a Unix domain socket /// /// Connect (synchronously) over the named Unix domain socket (`unixsocket`) /// to an NBD server running on the same machine. /// /// /// This call returns when the connection has been made. By default, /// this proceeds all the way to transmission phase, but /// [set_opt_mode](Handle::set_opt_mode) can be used for manual control over /// option negotiation performed before transmission phase. pub fn connect_unix(&self, unixsocket: impl Into) -> Result<()> { // Convert all arguments to FFI-like types. let unixsocket_buf = CString::new(unixsocket.into().into_os_string().into_vec()) .map_err(|e| Error::from(e))?; let unixsocket_ffi = unixsocket_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_connect_unix(self.handle, unixsocket_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to NBD server over AF_VSOCK protocol /// /// Connect (synchronously) over the `AF_VSOCK` protocol from a /// virtual machine to an NBD server, usually running on the host. The /// `cid` and `port` parameters specify the server address. Usually /// `cid` should be `2` (to connect to the host), and `port` might be /// `10809` or another port number assigned to you by the host /// administrator. /// /// Not all systems support `AF_VSOCK`; to determine if libnbd was /// built on a system with vsock support, see [supports_vsock](Handle::supports_vsock). /// /// /// This call returns when the connection has been made. By default, /// this proceeds all the way to transmission phase, but /// [set_opt_mode](Handle::set_opt_mode) can be used for manual control over /// option negotiation performed before transmission phase. pub fn connect_vsock(&self, cid: u32, port: u32) -> Result<()> { // Convert all arguments to FFI-like types. let cid_ffi = cid; let port_ffi = port; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_connect_vsock(self.handle, cid_ffi, port_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to NBD server over a TCP port /// /// Connect (synchronously) to the NBD server listening on /// `hostname:port`. The `port` may be a port name such /// as `"nbd"`, or it may be a port number as a string /// such as `"10809"`. /// /// /// This call returns when the connection has been made. By default, /// this proceeds all the way to transmission phase, but /// [set_opt_mode](Handle::set_opt_mode) can be used for manual control over /// option negotiation performed before transmission phase. pub fn connect_tcp( &self, hostname: impl Into>, port: impl Into>, ) -> Result<()> { // Convert all arguments to FFI-like types. let hostname_buf = CString::new(hostname.into()).map_err(|e| Error::from(e))?; let hostname_ffi = hostname_buf.as_ptr(); let port_buf = CString::new(port.into()).map_err(|e| Error::from(e))?; let port_ffi = port_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_connect_tcp(self.handle, hostname_ffi, port_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect directly to a connected socket /// /// Pass a connected socket `sock` through which libnbd will talk /// to the NBD server. /// /// The caller is responsible for creating and connecting this /// socket by some method, before passing it to libnbd. /// /// If this call returns without error then socket ownership /// is passed to libnbd. Libnbd will close the socket when the /// handle is closed. The caller must not use the socket in any way. /// /// /// This call returns when the connection has been made. By default, /// this proceeds all the way to transmission phase, but /// [set_opt_mode](Handle::set_opt_mode) can be used for manual control over /// option negotiation performed before transmission phase. pub fn connect_socket(&self, sock: OwnedFd) -> Result<()> { // Convert all arguments to FFI-like types. let sock_ffi = sock.as_raw_fd(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_connect_socket(self.handle, sock_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to NBD server command /// /// Run the command as a subprocess and connect to it over /// stdin/stdout. This is for use with NBD servers which can /// behave like inetd clients, such as nbdkit(1) using /// the -s/--single flag, and nbd-server(1) with /// port number set to 0. /// /// To run qemu-nbd(1), use /// [connect_systemd_socket_activation](Handle::connect_systemd_socket_activation) instead. /// /// ## Subprocess /// /// Libnbd will fork the `argv` command and pass the NBD socket /// to it using file descriptors 0 and 1 (stdin/stdout): /// /// ```text /// ┌─────────┬─────────┐ ┌────────────────┐ /// │ program │ libnbd │ │ NBD server │ /// │ │ │ │ (argv) │ /// │ │ socket ╍╍╍╍╍╍╍╍▶ stdin/stdout │ /// └─────────┴─────────┘ └────────────────┘ /// ``` /// /// When the NBD handle is closed the server subprocess /// is killed. /// /// /// This call returns when the connection has been made. By default, /// this proceeds all the way to transmission phase, but /// [set_opt_mode](Handle::set_opt_mode) can be used for manual control over /// option negotiation performed before transmission phase. pub fn connect_command( &self, argv: impl IntoIterator>, ) -> Result<()> { // Convert all arguments to FFI-like types. let argv_ffi_c_strs: Vec = argv .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut argv_ffi_ptrs: Vec<*mut c_char> = argv_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); argv_ffi_ptrs.push(ptr::null_mut()); let argv_ffi = argv_ffi_ptrs.as_mut_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_connect_command(self.handle, argv_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect using systemd socket activation /// /// Run the command as a subprocess and connect to it using /// systemd socket activation. /// /// This is especially useful for running qemu-nbd(1) as /// a subprocess of libnbd, for example to use it to open /// qcow2 files. /// /// To run nbdkit as a subprocess, this function can be used, /// or [connect_command](Handle::connect_command). /// /// To run nbd-server(1) as a subprocess, this function /// cannot be used, you must use [connect_command](Handle::connect_command). /// /// ## Socket activation /// /// Libnbd will fork the `argv` command and pass an NBD /// socket to it using special `LISTEN_*` environment /// variables (as defined by the systemd socket activation /// protocol). /// /// ```text /// ┌─────────┬─────────┐ ┌───────────────┐ /// │ program │ libnbd │ │ qemu-nbd or │ /// │ │ │ │ other server │ /// │ │ socket ╍╍╍╍╍╍╍╍▶ │ /// └─────────┴─────────┘ └───────────────┘ /// ``` /// /// When the NBD handle is closed the server subprocess /// is killed. /// /// ### Socket name /// /// The socket activation protocol lets you optionally give /// the socket a name. If used, the name is passed to the /// NBD server using the `LISTEN_FDNAMES` environment /// variable. To provide a socket name, call /// [set_socket_activation_name](Handle::set_socket_activation_name) before calling /// the connect function. /// /// /// This call returns when the connection has been made. By default, /// this proceeds all the way to transmission phase, but /// [set_opt_mode](Handle::set_opt_mode) can be used for manual control over /// option negotiation performed before transmission phase. pub fn connect_systemd_socket_activation( &self, argv: impl IntoIterator>, ) -> Result<()> { // Convert all arguments to FFI-like types. let argv_ffi_c_strs: Vec = argv .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut argv_ffi_ptrs: Vec<*mut c_char> = argv_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); argv_ffi_ptrs.push(ptr::null_mut()); let argv_ffi = argv_ffi_ptrs.as_mut_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_connect_systemd_socket_activation(self.handle, argv_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// set the socket activation name /// /// When running an NBD server using /// [connect_systemd_socket_activation](Handle::connect_systemd_socket_activation) you can optionally /// name the socket. Call this function before connecting to the /// server. /// /// Some servers such as qemu-storage-daemon(1) /// can use this information to associate the socket with a name /// used on the command line, but most servers will ignore it. /// The name is passed through the `LISTEN_FDNAMES` environment /// variable. /// /// The parameter `socket_name` can be a short alphanumeric string. /// If it is set to the empty string (also the default when the handle /// is created) then the name `unknown` will be seen by the server. pub fn set_socket_activation_name( &self, socket_name: impl Into>, ) -> Result<()> { // Convert all arguments to FFI-like types. let socket_name_buf = CString::new(socket_name.into()).map_err(|e| Error::from(e))?; let socket_name_ffi = socket_name_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_set_socket_activation_name(self.handle, socket_name_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// get the socket activation name /// /// Return the socket name used when you call /// [connect_systemd_socket_activation](Handle::connect_systemd_socket_activation) on the same /// handle. By default this will return the empty string /// meaning that the server will see the name `unknown`. pub fn get_socket_activation_name(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_socket_activation_name(self.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } /// is the NBD export read-only? /// /// Returns true if the NBD export is read-only; writes and /// write-like operations will fail. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn is_read_only(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_is_read_only(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the flush command? /// /// Returns true if the server supports the flush command /// (see [flush](Handle::flush), [aio_flush](Handle::aio_flush)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_flush(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_flush(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the FUA flag? /// /// Returns true if the server supports the FUA flag on /// certain commands (see [pwrite](Handle::pwrite)). /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_fua(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_fua(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// is the NBD disk rotational (like a disk)? /// /// Returns true if the disk exposed over NBD is rotational /// (like a traditional floppy or hard disk). Returns false if /// the disk has no penalty for random access (like an SSD or /// RAM disk). /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn is_rotational(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_is_rotational(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the trim command? /// /// Returns true if the server supports the trim command /// (see [trim](Handle::trim), [aio_trim](Handle::aio_trim)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_trim(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_trim(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the zero command? /// /// Returns true if the server supports the zero command /// (see [zero](Handle::zero), [aio_zero](Handle::aio_zero)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_zero(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_zero(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the fast zero flag? /// /// Returns true if the server supports the use of the /// `LIBNBD_CMD_FLAG_FAST_ZERO` flag to the zero command /// (see [zero](Handle::zero), [aio_zero](Handle::aio_zero)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_fast_zero(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_fast_zero(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the block status payload flag? /// /// Returns true if the server supports the use of the /// `LIBNBD_CMD_FLAG_PAYLOAD_LEN` flag to allow filtering of the /// block status command (see [block_status_filter](Handle::block_status_filter)). Returns /// false if the server does not. Note that this will never return /// true if [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated) is false. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_block_status_payload(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_block_status_payload(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the don't fragment flag to pread? /// /// Returns true if the server supports structured reads with an /// ability to request a non-fragmented read (see [pread_structured](Handle::pread_structured), /// [aio_pread_structured](Handle::aio_pread_structured)). Returns false if the server either lacks /// structured reads or if it does not support a non-fragmented read request. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_df(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_df(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support multi-conn? /// /// Returns true if the server supports multi-conn. Returns /// false if the server does not. /// /// It is not safe to open multiple handles connecting to the /// same server if you will write to the server and the /// server does not advertise multi-conn support. The safe /// way to check for this is to open one connection, check /// this flag is true, then open further connections as /// required. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_multi_conn(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_multi_conn(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support the cache command? /// /// Returns true if the server supports the cache command /// (see [cache](Handle::cache), [aio_cache](Handle::aio_cache)). Returns false if /// the server does not. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_cache(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_cache(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// does the server support a specific meta context? /// /// Returns true if the server supports the given meta context /// (see [add_meta_context](Handle::add_meta_context)). Returns false if /// the server does not. It is possible for this command to fail if /// meta contexts were requested but there is a missing or failed /// attempt at NBD_OPT_SET_META_CONTEXT during option negotiation. /// /// If the server supports block status filtering (see /// [can_block_status_payload](Handle::can_block_status_payload), this function must return /// true for any filter name passed to [block_status_filter](Handle::block_status_filter). /// /// The single parameter is the name of the metadata context, /// for example `LIBNBD_CONTEXT_BASE_ALLOCATION`. /// Elibnbd.h>> includes defined constants for well-known /// namespace contexts beginning with `LIBNBD_CONTEXT_`, but you /// are free to pass in other contexts. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn can_meta_context( &self, metacontext: impl Into>, ) -> Result { // Convert all arguments to FFI-like types. let metacontext_buf = CString::new(metacontext.into()).map_err(|e| Error::from(e))?; let metacontext_ffi = metacontext_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_can_meta_context(self.handle, metacontext_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// return the NBD protocol variant /// /// Return the NBD protocol variant in use on the connection. At /// the moment this returns one of the strings `"oldstyle"`, /// `"newstyle"` or `"newstyle-fixed"`. Other strings might /// be returned in the future. /// Most modern NBD servers use `"newstyle-fixed"`. /// /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn get_protocol(&self) -> Result<&'static [u8]> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_protocol(self.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(unsafe { CStr::from_ptr(ffi_ret) }.to_bytes()) } } /// return the export size /// /// Returns the size in bytes of the NBD export. /// /// Note that this call fails with `EOVERFLOW` for an unlikely /// server that advertises a size which cannot fit in a 64-bit /// signed integer. /// /// nbdinfo(1) --size option is a way to access this API /// from shell scripts. /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn get_size(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_size(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// return a specific server block size constraint /// /// Returns a specific block size constraint advertised by the server. /// If zero is returned it means the server did not advertise a constraint. /// /// Constraints are hints. Servers differ in their behaviour as to /// whether they enforce constraints or not. /// /// The `size_type` parameter selects which constraint to read. /// It can be one of: /// /// /// - `LIBNBD_SIZE_MINIMUM` = 0 /// /// If non-zero, this will be a power of 2 between 1 and 64k; any client /// request that is not aligned in length or offset to this size is likely /// to fail with `EINVAL`. The image size will generally also be a /// multiple of this value (if not, the final few bytes are inaccessible /// while obeying alignment constraints). /// /// If zero (meaning no information was returned by the server), it is /// safest to assume a minimum block size of 512, although many servers /// support a minimum block size of 1. /// /// If the server provides a constraint, then libnbd defaults to honoring /// that constraint client-side unless `LIBNBD_STRICT_ALIGN` is cleared /// in `nbd_set_strict_mode(3)`. /// /// - `LIBNBD_SIZE_PREFERRED` = 1 /// /// If non-zero, this is a power of 2 representing the preferred size for /// efficient I/O. Smaller requests may incur overhead such as /// read-modify-write cycles that will not be present when using I/O that /// is a multiple of this value. This value may be larger than the size /// of the export. /// /// If zero (meaning no information was returned by the server), using 4k /// as a preferred block size tends to give decent performance. /// /// - `LIBNBD_SIZE_MAXIMUM` = 2 /// /// If non-zero, this represents the maximum length that the server is /// willing to handle during [pread](Handle::pread) or [pwrite](Handle::pwrite). Other /// functions like [zero](Handle::zero) may still be able to use larger sizes. /// Note that this function returns what the server advertised, but libnbd /// itself imposes a maximum of 64M. /// /// If zero (meaning no information was returned by the server), some NBD /// servers will abruptly disconnect if a transaction sends or receives /// more than 32M of data. /// /// - `LIBNBD_SIZE_PAYLOAD` = 3 /// /// This value is not advertised by the server, but rather represents /// the maximum outgoing payload size for a given connection that /// libnbd will enforce unless `LIBNBD_STRICT_PAYLOAD` is cleared /// in `nbd_set_strict_mode(3)`. It is always non-zero: never /// smaller than 1M, never larger than 64M, and matches /// `LIBNBD_SIZE_MAXIMUM` when possible. /// /// /// Future NBD extensions may result in additional `size_type` values. /// Note that by default, libnbd requests all available block sizes, /// but that a server may differ in what sizes it chooses to report /// if [set_request_block_size](Handle::set_request_block_size) alters whether the client /// requests sizes. /// /// /// This call does not block, because it returns data that is saved in /// the handle from the NBD protocol handshake. pub fn get_block_size(&self, size_type: Size) -> Result { // Convert all arguments to FFI-like types. let size_type_ffi = size_type as c_int; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_block_size(self.handle, size_type_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// read from the NBD server /// /// Issue a read command to the NBD server for the range starting /// at `offset` and ending at `offset` + `count` - 1. NBD /// can only read all or nothing using this call. The call /// returns when the data has been read fully into `buf` or there is an /// error. See also [pread_structured](Handle::pread_structured), if finer visibility is /// required into the server's replies, or if you want to use /// `LIBNBD_CMD_FLAG_DF`. /// /// Note that libnbd currently enforces a maximum read buffer of 64MiB, /// even if the server would permit a larger buffer in a single transaction; /// attempts to exceed this will result in an `ERANGE` error. The server /// may enforce a smaller limit, which can be learned with /// [get_block_size](Handle::get_block_size). /// /// The `flags` parameter must be `0` for now (it exists for future NBD /// protocol extensions). /// /// Note that if this command fails, and [get_pread_initialize](Handle::get_pread_initialize) /// returns true, then libnbd sanitized `buf`, but it is unspecified /// whether the contents of `buf` will read as zero or as partial results /// from the server. If [get_pread_initialize](Handle::get_pread_initialize) returns false, /// then libnbd did not sanitize `buf`, and the contents are undefined /// on failure. /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn pread( &self, buf: &mut [u8], offset: u64, flags: Option, ) -> Result<()> { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_mut_ptr() as *mut c_void; let count_ffi = buf.len(); let offset_ffi = offset; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_pread( self.handle, buf_ffi, count_ffi, offset_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// read from the NBD server /// /// Issue a read command to the NBD server for the range starting /// at `offset` and ending at `offset` + `count` - 1. The server's /// response may be subdivided into chunks which may arrive out of order /// before reassembly into the original buffer; the `chunk` callback /// is used for notification after each chunk arrives, and may perform /// additional sanity checking on the server's reply. The callback cannot /// call `nbd_*` APIs on the same handle since it holds the handle lock /// and will cause a deadlock. If the callback returns `-1`, and no /// earlier error has been detected, then the overall read command will /// fail with any non-zero value stored into the callback's `error` /// parameter (with a default of `EPROTO`); but any further chunks will /// still invoke the callback. /// /// The `chunk` function is called once per chunk of data received, with /// the `user_data` passed to this function. The /// `subbuf` and `count` parameters represent the subset of the original /// buffer which has just been populated by results from the server (in C, /// `subbuf` always points within the original `buf`; but this guarantee /// may not extend to other language bindings). The `offset` parameter /// represents the absolute offset at which `subbuf` begins within the /// image (note that this is not the relative offset of `subbuf` within /// the original buffer `buf`). Changes to `error` on output are ignored /// unless the callback fails. The input meaning of the `error` parameter /// is controlled by the `status` parameter, which is one of /// /// /// - `LIBNBD_READ_DATA` = 1 /// /// `subbuf` was populated with `count` bytes of data. On input, `error` /// contains the errno value of any earlier detected error, or zero. /// /// - `LIBNBD_READ_HOLE` = 2 /// /// `subbuf` represents a hole, and contains `count` NUL bytes. On input, /// `error` contains the errno value of any earlier detected error, or zero. /// /// - `LIBNBD_READ_ERROR` = 3 /// /// `count` is 0, so `subbuf` is unusable. On input, `error` contains the /// errno value reported by the server as occurring while reading that /// `offset`, regardless if any earlier error has been detected. /// /// /// Future NBD extensions may permit other values for `status`, but those /// will not be returned to a client that has not opted in to requesting /// such extensions. If the server is non-compliant, it is possible for /// the `chunk` function to be called more times than you expect or with /// `count` 0 for `LIBNBD_READ_DATA` or `LIBNBD_READ_HOLE`. It is also /// possible that the `chunk` function is not called at all (in /// particular, `LIBNBD_READ_ERROR` is used only when an error is /// associated with a particular offset, and not when the server reports a /// generic error), but you are guaranteed that the callback was called at /// least once if the overall read succeeds. Libnbd does not validate that /// the server obeyed the requirement that a read call must not have /// overlapping chunks and must not succeed without enough chunks to cover /// the entire request. /// /// Note that libnbd currently enforces a maximum read buffer of 64MiB, /// even if the server would permit a larger buffer in a single transaction; /// attempts to exceed this will result in an `ERANGE` error. The server /// may enforce a smaller limit, which can be learned with /// [get_block_size](Handle::get_block_size). /// /// The `flags` parameter may be `0` for no flags, or may contain /// `LIBNBD_CMD_FLAG_DF` meaning that the server should not reply with /// more than one fragment (if that is supported - some servers cannot do /// this, see [can_df](Handle::can_df)). Libnbd does not validate that the server /// actually obeys the flag. /// /// Note that if this command fails, and [get_pread_initialize](Handle::get_pread_initialize) /// returns true, then libnbd sanitized `buf`, but it is unspecified /// whether the contents of `buf` will read as zero or as partial results /// from the server. If [get_pread_initialize](Handle::get_pread_initialize) returns false, /// then libnbd did not sanitize `buf`, and the contents are undefined /// on failure. /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn pread_structured( &self, buf: &mut [u8], offset: u64, chunk: impl FnMut(&[u8], u64, c_uint, &mut c_int) -> c_int + Send + Sync + 'static, flags: Option, ) -> Result<()> { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_mut_ptr() as *mut c_void; let count_ffi = buf.len(); let offset_ffi = offset; let chunk_ffi = unsafe { crate::bindings::chunk_to_raw(chunk) }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_pread_structured( self.handle, buf_ffi, count_ffi, offset_ffi, chunk_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// write to the NBD server /// /// Issue a write command to the NBD server, writing the data in /// `buf` to the range starting at `offset` and ending at /// `offset` + `count` - 1. NBD can only write all or nothing /// using this call. The call returns when the command has been /// acknowledged by the server, or there is an error. Note this will /// generally return an error if [is_read_only](Handle::is_read_only) is true. /// /// Note that libnbd defaults to enforcing a maximum write buffer /// of the lesser of 64MiB or any maximum payload size advertised /// by the server; attempts to exceed this will generally result in /// a client-side `ERANGE` error, rather than a server-side /// disconnection. The actual limit can be learned with /// [get_block_size](Handle::get_block_size). /// /// The `flags` parameter may be `0` for no flags, or may contain /// `LIBNBD_CMD_FLAG_FUA` meaning that the server should not /// return until the data has been committed to permanent storage /// (if that is supported - some servers cannot do this, see /// [can_fua](Handle::can_fua)). For convenience, unless `nbd_set_strict_flags(3)` /// was used to disable `LIBNBD_STRICT_AUTO_FLAG`, libnbd ignores the /// presence or absence of the flag `LIBNBD_CMD_FLAG_PAYLOAD_LEN` /// in `flags`, while correctly using the flag over the wire /// according to whether extended headers were negotiated. /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn pwrite( &self, buf: &[u8], offset: u64, flags: Option, ) -> Result<()> { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_ptr() as *const c_void; let count_ffi = buf.len(); let offset_ffi = offset; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_pwrite( self.handle, buf_ffi, count_ffi, offset_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// disconnect from the NBD server /// /// Issue the disconnect command to the NBD server. This is /// a nice way to tell the server we are going away, but from the /// client's point of view has no advantage over abruptly closing /// the connection (see `close`). /// /// This function works whether or not the handle is ready for /// transmission of commands. If more fine-grained control is /// needed, see [aio_opt_abort](Handle::aio_opt_abort) and [aio_disconnect](Handle::aio_disconnect). /// /// The `flags` argument is a bitmask, including zero or more of the /// following shutdown flags: /// /// /// - `LIBNBD_SHUTDOWN_ABANDON_PENDING` = 0x10000 /// /// If there are any pending requests which have not yet been sent to /// the server (see [aio_in_flight](Handle::aio_in_flight)), abandon them without /// sending them to the server, rather than the usual practice of /// issuing those commands before informing the server of the intent /// to disconnect. /// /// /// For convenience, the constant `LIBNBD_SHUTDOWN_MASK` is available /// to describe all shutdown flags recognized by this build of libnbd. /// A future version of the library may add new flags. pub fn shutdown(&self, flags: Option) -> Result<()> { // Convert all arguments to FFI-like types. let flags_ffi = flags.unwrap_or(Shutdown::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_shutdown(self.handle, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send flush command to the NBD server /// /// Issue the flush command to the NBD server. The function should /// return when all write commands which have completed have been /// committed to permanent storage on the server. Note this will /// generally return an error if [can_flush](Handle::can_flush) is false. /// /// The `flags` parameter must be `0` for now (it exists for future NBD /// protocol extensions). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn flush(&self, flags: Option) -> Result<()> { // Convert all arguments to FFI-like types. let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_flush(self.handle, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send trim command to the NBD server /// /// Issue a trim command to the NBD server, which if supported /// by the server causes a hole to be punched in the backing /// store starting at `offset` and ending at `offset` + `count` - 1. /// The call returns when the command has been acknowledged by the server, /// or there is an error. Note this will generally return an error /// if [can_trim](Handle::can_trim) is false or [is_read_only](Handle::is_read_only) is true. /// /// Note that not all servers can support a `count` of 4GiB or larger; /// [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated) indicates which servers /// will parse a request larger than 32 bits. /// The NBD protocol does not yet have a way for a client to learn if /// the server will enforce an even smaller maximum trim size, although /// a future extension may add a constraint visible in /// [get_block_size](Handle::get_block_size). /// /// The `flags` parameter may be `0` for no flags, or may contain /// `LIBNBD_CMD_FLAG_FUA` meaning that the server should not /// return until the data has been committed to permanent storage /// (if that is supported - some servers cannot do this, see /// [can_fua](Handle::can_fua)). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn trim( &self, count: u64, offset: u64, flags: Option, ) -> Result<()> { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_trim(self.handle, count_ffi, offset_ffi, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send cache (prefetch) command to the NBD server /// /// Issue the cache (prefetch) command to the NBD server, which /// if supported by the server causes data to be prefetched /// into faster storage by the server, speeding up a subsequent /// [pread](Handle::pread) call. The server can also silently ignore /// this command. Note this will generally return an error if /// [can_cache](Handle::can_cache) is false. /// /// Note that not all servers can support a `count` of 4GiB or larger; /// [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated) indicates which servers /// will parse a request larger than 32 bits. /// The NBD protocol does not yet have a way for a client to learn if /// the server will enforce an even smaller maximum cache size, although /// a future extension may add a constraint visible in /// [get_block_size](Handle::get_block_size). /// /// The `flags` parameter must be `0` for now (it exists for future NBD /// protocol extensions). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn cache( &self, count: u64, offset: u64, flags: Option, ) -> Result<()> { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_cache(self.handle, count_ffi, offset_ffi, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send write zeroes command to the NBD server /// /// Issue a write zeroes command to the NBD server, which if supported /// by the server causes a zeroes to be written efficiently /// starting at `offset` and ending at `offset` + `count` - 1. /// The call returns when the command has been acknowledged by the server, /// or there is an error. Note this will generally return an error if /// [can_zero](Handle::can_zero) is false or [is_read_only](Handle::is_read_only) is true. /// /// Note that not all servers can support a `count` of 4GiB or larger; /// [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated) indicates which servers /// will parse a request larger than 32 bits. /// The NBD protocol does not yet have a way for a client to learn if /// the server will enforce an even smaller maximum zero size, although /// a future extension may add a constraint visible in /// [get_block_size](Handle::get_block_size). Also, some servers may permit a larger /// zero request only when the `LIBNBD_CMD_FLAG_FAST_ZERO` is in use. /// /// The `flags` parameter may be `0` for no flags, or may contain /// `LIBNBD_CMD_FLAG_FUA` meaning that the server should not /// return until the data has been committed to permanent storage /// (if that is supported - some servers cannot do this, see /// [can_fua](Handle::can_fua)), `LIBNBD_CMD_FLAG_NO_HOLE` meaning that /// the server should favor writing actual allocated zeroes over /// punching a hole, and/or `LIBNBD_CMD_FLAG_FAST_ZERO` meaning /// that the server must fail quickly if writing zeroes is no /// faster than a normal write (if that is supported - some servers /// cannot do this, see [can_fast_zero](Handle::can_fast_zero)). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn zero( &self, count: u64, offset: u64, flags: Option, ) -> Result<()> { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_zero(self.handle, count_ffi, offset_ffi, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send block status command, with 32-bit callback /// /// Issue the block status command to the NBD server. If /// supported by the server, this causes metadata context /// information about blocks beginning from the specified /// offset to be returned. The `count` parameter is a hint: the /// server may choose to return less status, or the final block /// may extend beyond the requested range. If multiple contexts /// are supported, the number of blocks and cumulative length /// of those blocks need not be identical between contexts. /// /// Note that not all servers can support a `count` of 4GiB or larger; /// [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated) indicates which servers /// will parse a request larger than 32 bits. /// The NBD protocol does not yet have a way for a client to learn if /// the server will enforce an even smaller maximum block status size, /// although a future extension may add a constraint visible in /// [get_block_size](Handle::get_block_size). Furthermore, this function is inherently /// limited to 32-bit values. If the server replies with a larger /// extent, the length of that extent will be truncated to just /// below 32 bits and any further extents from the server will be /// ignored. If the server replies with a status value larger than /// 32 bits (only possible when extended headers are in use), the /// callback function will be passed an `EOVERFLOW` error. To get /// the full extent information from a server that supports 64-bit /// extents, you must use [block_status_64](Handle::block_status_64). /// /// Depending on which metadata contexts were enabled before /// connecting (see [add_meta_context](Handle::add_meta_context)) and which are /// supported by the server (see [can_meta_context](Handle::can_meta_context)) this call /// returns information about extents by calling back to the /// `extent` function. The callback cannot call `nbd_*` APIs on the /// same handle since it holds the handle lock and will /// cause a deadlock. If the callback returns `-1`, and no earlier /// error has been detected, then the overall block status command /// will fail with any non-zero value stored into the callback's /// `error` parameter (with a default of `EPROTO`); but any further /// contexts will still invoke the callback. /// /// The `extent` function is called once per type of metadata available, /// with the `user_data` passed to this function. The `metacontext` /// parameter is a string such as `"base:allocation"`. The `entries` /// array is an array of pairs of integers with the first entry in each /// pair being the length (in bytes) of the block and the second entry /// being a status/flags field which is specific to the metadata context. /// The number of pairs passed to the function is `nr_entries/2`. The /// NBD protocol document in the section about /// `NBD_REPLY_TYPE_BLOCK_STATUS` describes the meaning of this array; /// for contexts known to libnbd, Elibnbd.h>> contains constants /// beginning with `LIBNBD_STATE_` that may help decipher the values. /// On entry to the callback, the `error` parameter contains the errno /// value of any previously detected error, but even if an earlier error /// was detected, the current `metacontext` and `entries` are valid. /// /// It is possible for the extent function to be called /// more times than you expect (if the server is buggy), /// so always check the `metacontext` field to ensure you /// are receiving the data you expect. It is also possible /// that the extent function is not called at all, even for /// metadata contexts that you requested. This indicates /// either that the server doesn't support the context /// or for some other reason cannot return the data. /// /// The `flags` parameter may be `0` for no flags, or may contain /// `LIBNBD_CMD_FLAG_REQ_ONE` meaning that the server should /// return only one extent per metadata context where that extent /// does not exceed `count` bytes; however, libnbd does not /// validate that the server obeyed the flag. /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn block_status( &self, count: u64, offset: u64, extent: impl FnMut(&[u8], u64, &[u32], &mut c_int) -> c_int + Send + Sync + 'static, flags: Option, ) -> Result<()> { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let extent_ffi = unsafe { crate::bindings::extent_to_raw(extent) }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_block_status( self.handle, count_ffi, offset_ffi, extent_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send block status command, with 64-bit callback /// /// Issue the block status command to the NBD server. If /// supported by the server, this causes metadata context /// information about blocks beginning from the specified /// offset to be returned. The `count` parameter is a hint: the /// server may choose to return less status, or the final block /// may extend beyond the requested range. When multiple contexts /// are supported, the number of blocks and cumulative length /// of those blocks need not be identical between contexts; this /// command generally returns the status of all negotiated contexts, /// while some servers also support a filtered request (see /// [can_block_status_payload](Handle::can_block_status_payload), [block_status_filter](Handle::block_status_filter)). /// /// Note that not all servers can support a `count` of 4GiB or larger; /// [get_extended_headers_negotiated](Handle::get_extended_headers_negotiated) indicates which servers /// will parse a request larger than 32 bits. /// The NBD protocol does not yet have a way for a client to learn if /// the server will enforce an even smaller maximum block status size, /// although a future extension may add a constraint visible in /// [get_block_size](Handle::get_block_size). /// /// Depending on which metadata contexts were enabled before /// connecting (see [add_meta_context](Handle::add_meta_context)) and which are /// supported by the server (see [can_meta_context](Handle::can_meta_context)) this call /// returns information about extents by calling back to the /// `extent64` function. The callback cannot call `nbd_*` APIs on the /// same handle since it holds the handle lock and will /// cause a deadlock. If the callback returns `-1`, and no earlier /// error has been detected, then the overall block status command /// will fail with any non-zero value stored into the callback's /// `error` parameter (with a default of `EPROTO`); but any further /// contexts will still invoke the callback. /// /// The `extent64` function is called once per type of metadata available, /// with the `user_data` passed to this function. The `metacontext` /// parameter is a string such as `"base:allocation"`. The `entries` /// array is an array of nbd_extent structs, containing length (in bytes) /// of the block and a status/flags field which is specific to the metadata /// context. The number of array entries passed to the function is /// `nr_entries`. The NBD protocol document in the section about /// `NBD_REPLY_TYPE_BLOCK_STATUS` describes the meaning of this array; /// for contexts known to libnbd, Elibnbd.h>> contains constants /// beginning with `LIBNBD_STATE_` that may help decipher the values. /// On entry to the callback, the `error` parameter contains the errno /// value of any previously detected error. /// /// It is possible for the extent function to be called /// more times than you expect (if the server is buggy), /// so always check the `metacontext` field to ensure you /// are receiving the data you expect. It is also possible /// that the extent function is not called at all, even for /// metadata contexts that you requested. This indicates /// either that the server doesn't support the context /// or for some other reason cannot return the data. /// /// The `flags` parameter may be `0` for no flags, or may contain /// `LIBNBD_CMD_FLAG_REQ_ONE` meaning that the server should /// return only one extent per metadata context where that extent /// does not exceed `count` bytes; however, libnbd does not /// validate that the server obeyed the flag. /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn block_status_64( &self, count: u64, offset: u64, extent64: impl FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync + 'static, flags: Option, ) -> Result<()> { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let extent64_ffi = unsafe { crate::bindings::extent64_to_raw(extent64) }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_block_status_64( self.handle, count_ffi, offset_ffi, extent64_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send filtered block status command, with 64-bit callback /// /// Issue a filtered block status command to the NBD server. If /// supported by the server (see [can_block_status_payload](Handle::can_block_status_payload)), /// this causes metadata context information about blocks beginning /// from the specified offset to be returned, and with the result /// limited to just the contexts specified in `filter`. Note that /// all strings in `filter` must be supported by /// [can_meta_context](Handle::can_meta_context). /// /// All other parameters to this function have the same semantics /// as in [block_status_64](Handle::block_status_64); except that for convenience, /// unless was used to disable /// `LIBNBD_STRICT_AUTO_FLAG`, libnbd ignores the presence or /// absence of the flag `LIBNBD_CMD_FLAG_PAYLOAD_LEN` /// in `flags`, while correctly using the flag over the wire. /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn block_status_filter( &self, count: u64, offset: u64, contexts: impl IntoIterator>, extent64: impl FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync + 'static, flags: Option, ) -> Result<()> { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let contexts_ffi_c_strs: Vec = contexts .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut contexts_ffi_ptrs: Vec<*mut c_char> = contexts_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); contexts_ffi_ptrs.push(ptr::null_mut()); let contexts_ffi = contexts_ffi_ptrs.as_mut_ptr(); let extent64_ffi = unsafe { crate::bindings::extent64_to_raw(extent64) }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_block_status_filter( self.handle, count_ffi, offset_ffi, contexts_ffi, extent64_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// poll the handle once /// /// This is a simple implementation of poll(2) which is used /// internally by synchronous API calls. On success, it returns /// `0` if the `timeout` (in milliseconds) occurs, or `1` if /// the poll completed and the state machine progressed. Set /// `timeout` to `-1` to block indefinitely (but be careful /// that eventual action is actually expected - for example, if /// the connection is established but there are no commands in /// flight, using an infinite timeout will permanently block). /// /// This function is mainly useful as an example of how you might /// integrate libnbd with your own main loop, rather than being /// intended as something you would use. pub fn poll(&self, timeout: c_int) -> Result { // Convert all arguments to FFI-like types. let timeout_ffi = timeout; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_poll(self.handle, timeout_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// poll the handle once, with fd /// /// This is the same as [poll](Handle::poll), but an additional /// file descriptor parameter is passed. The additional /// fd is also polled (using `POLLIN`). One use for this is to /// wait for an eventfd(2). pub fn poll2(&self, fd: OwnedFd, timeout: c_int) -> Result { // Convert all arguments to FFI-like types. let fd_ffi = fd.as_raw_fd(); let timeout_ffi = timeout; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_poll2(self.handle, fd_ffi, timeout_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// connect to the NBD server /// /// Begin connecting to the NBD server. The `addr` and `addrlen` /// parameters specify the address of the socket to connect to. /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect(&self, addr: SocketAddr) -> Result<()> { // Convert all arguments to FFI-like types. let addr_os = OsSocketAddr::from(addr); let addr_ffi = addr_os.as_ptr(); let addrlen_ffi = addr_os.len(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect(self.handle, addr_ffi, addrlen_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to an NBD URI /// /// Begin connecting to the NBD URI `uri`. Parameters behave as /// documented in [connect_uri](Handle::connect_uri). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_uri(&self, uri: impl Into>) -> Result<()> { // Convert all arguments to FFI-like types. let uri_buf = CString::new(uri.into()).map_err(|e| Error::from(e))?; let uri_ffi = uri_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_uri(self.handle, uri_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to the NBD server over a Unix domain socket /// /// Begin connecting to the NBD server over Unix domain socket /// (`unixsocket`). Parameters behave as documented in /// [connect_unix](Handle::connect_unix). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_unix( &self, unixsocket: impl Into, ) -> Result<()> { // Convert all arguments to FFI-like types. let unixsocket_buf = CString::new(unixsocket.into().into_os_string().into_vec()) .map_err(|e| Error::from(e))?; let unixsocket_ffi = unixsocket_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_unix(self.handle, unixsocket_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to the NBD server over AF_VSOCK socket /// /// Begin connecting to the NBD server over the `AF_VSOCK` /// protocol to the server `cid:port`. Parameters behave as documented in /// [connect_vsock](Handle::connect_vsock). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_vsock(&self, cid: u32, port: u32) -> Result<()> { // Convert all arguments to FFI-like types. let cid_ffi = cid; let port_ffi = port; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_vsock(self.handle, cid_ffi, port_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to the NBD server over a TCP port /// /// Begin connecting to the NBD server listening on `hostname:port`. /// Parameters behave as documented in [connect_tcp](Handle::connect_tcp). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_tcp( &self, hostname: impl Into>, port: impl Into>, ) -> Result<()> { // Convert all arguments to FFI-like types. let hostname_buf = CString::new(hostname.into()).map_err(|e| Error::from(e))?; let hostname_ffi = hostname_buf.as_ptr(); let port_buf = CString::new(port.into()).map_err(|e| Error::from(e))?; let port_ffi = port_buf.as_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_tcp(self.handle, hostname_ffi, port_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect directly to a connected socket /// /// Begin connecting to the connected socket `fd`. /// Parameters behave as documented in [connect_socket](Handle::connect_socket). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_socket(&self, sock: OwnedFd) -> Result<()> { // Convert all arguments to FFI-like types. let sock_ffi = sock.as_raw_fd(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_socket(self.handle, sock_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect to the NBD server /// /// Run the command as a subprocess and begin connecting to it over /// stdin/stdout. Parameters behave as documented in /// [connect_command](Handle::connect_command). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_command( &self, argv: impl IntoIterator>, ) -> Result<()> { // Convert all arguments to FFI-like types. let argv_ffi_c_strs: Vec = argv .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut argv_ffi_ptrs: Vec<*mut c_char> = argv_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); argv_ffi_ptrs.push(ptr::null_mut()); let argv_ffi = argv_ffi_ptrs.as_mut_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_command(self.handle, argv_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// connect using systemd socket activation /// /// Run the command as a subprocess and begin connecting to it using /// systemd socket activation. Parameters behave as documented in /// [connect_systemd_socket_activation](Handle::connect_systemd_socket_activation). /// /// /// You can check if the connection attempt is still underway by /// calling [aio_is_connecting](Handle::aio_is_connecting). If [set_opt_mode](Handle::set_opt_mode) /// is enabled, the connection is ready for manual option negotiation /// once [aio_is_negotiating](Handle::aio_is_negotiating) returns true; otherwise, the /// connection attempt will include the NBD handshake, and is ready /// for use once [aio_is_ready](Handle::aio_is_ready) returns true. pub fn aio_connect_systemd_socket_activation( &self, argv: impl IntoIterator>, ) -> Result<()> { // Convert all arguments to FFI-like types. let argv_ffi_c_strs: Vec = argv .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut argv_ffi_ptrs: Vec<*mut c_char> = argv_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); argv_ffi_ptrs.push(ptr::null_mut()); let argv_ffi = argv_ffi_ptrs.as_mut_ptr(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_connect_systemd_socket_activation( self.handle, argv_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// end negotiation and move on to using an export /// /// Request that the server finish negotiation and move on to serving the /// export previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that directly detecting /// whether the server returns an error (as is done by the return value /// of the synchronous counterpart) is only possible with a completion /// callback; however it is also possible to indirectly detect an error /// when [aio_is_negotiating](Handle::aio_is_negotiating) returns true. pub fn aio_opt_go( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_go(self.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// end negotiation and close the connection /// /// Request that the server finish negotiation, gracefully if possible, then /// close the connection. This can only be used if [set_opt_mode](Handle::set_opt_mode) /// enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. pub fn aio_opt_abort(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_abort(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server to initiate TLS /// /// Request that the server initiate a secure TLS connection, by /// sending `NBD_OPT_STARTTLS`. This behaves like the synchronous /// counterpart [opt_starttls](Handle::opt_starttls), except that it does /// not wait for the server's response. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_starttls( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_starttls(self.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server to enable extended headers /// /// Request that the server use extended headers, by sending /// `NBD_OPT_EXTENDED_HEADERS`. This behaves like the synchronous /// counterpart [opt_extended_headers](Handle::opt_extended_headers), except that it does /// not wait for the server's response. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_extended_headers( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_extended_headers(self.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server to enable structured replies /// /// Request that the server use structured replies, by sending /// `NBD_OPT_STRUCTURED_REPLY`. This behaves like the synchronous /// counterpart [opt_structured_reply](Handle::opt_structured_reply), except that it does /// not wait for the server's response. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_structured_reply( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_structured_reply(self.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server to list all exports during negotiation /// /// Request that the server list all exports that it supports. This can /// only be used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_list( &self, list: impl FnMut(&[u8], &[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let list_ffi = unsafe { crate::bindings::list_to_raw(list) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_list(self.handle, list_ffi, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request the server for information about an export /// /// Request that the server supply information about the export name /// previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used if /// [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_info( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result<()> { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_info(self.handle, completion_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// request list of available meta contexts, using implicit query /// /// Request that the server list available meta contexts associated with /// the export previously specified by the most recent /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri), and with a /// list of queries from prior calls to [add_meta_context](Handle::add_meta_context) /// (see [aio_opt_list_meta_context_queries](Handle::aio_opt_list_meta_context_queries) if you want to /// supply an explicit query list instead). This can only be /// used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_list_meta_context( &self, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result { // Convert all arguments to FFI-like types. let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_list_meta_context( self.handle, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// request list of available meta contexts, using explicit query /// /// Request that the server list available meta contexts associated with /// the export previously specified by the most recent /// [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri), and with an /// explicit list of queries provided as a parameter (see /// [aio_opt_list_meta_context](Handle::aio_opt_list_meta_context) if you want to reuse an /// implicit query list instead). This can only be /// used if [set_opt_mode](Handle::set_opt_mode) enabled option mode. /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_list_meta_context_queries( &self, queries: impl IntoIterator>, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result { // Convert all arguments to FFI-like types. let queries_ffi_c_strs: Vec = queries .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut queries_ffi_ptrs: Vec<*mut c_char> = queries_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); queries_ffi_ptrs.push(ptr::null_mut()); let queries_ffi = queries_ffi_ptrs.as_mut_ptr(); let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_list_meta_context_queries( self.handle, queries_ffi, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// select specific meta contexts, with implicit query list /// /// Request that the server supply all recognized meta contexts /// registered through prior calls to [add_meta_context](Handle::add_meta_context), in /// conjunction with the export previously specified by the most /// recent [set_export_name](Handle::set_export_name) or [connect_uri](Handle::connect_uri). /// This can only be used if [set_opt_mode](Handle::set_opt_mode) enabled option /// mode. Normally, this function is redundant, as [opt_go](Handle::opt_go) /// automatically does the same task if structured replies or /// extended headers have already been negotiated. But manual /// control over meta context requests can be useful for fine-grained /// testing of how a server handles unusual negotiation sequences. /// Often, use of this function is coupled with /// [set_request_meta_context](Handle::set_request_meta_context) to bypass the automatic /// context request normally performed by [opt_go](Handle::opt_go). /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_set_meta_context( &self, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result { // Convert all arguments to FFI-like types. let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_set_meta_context( self.handle, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// select specific meta contexts, with explicit query list /// /// Request that the server supply all recognized meta contexts /// passed in through `queries`, in conjunction with the export /// previously specified by the most recent [set_export_name](Handle::set_export_name) /// or [connect_uri](Handle::connect_uri). This can only be used /// if [set_opt_mode](Handle::set_opt_mode) enabled option mode. Normally, this /// function is redundant, as [opt_go](Handle::opt_go) automatically does /// the same task if structured replies or extended headers have /// already been negotiated. But manual control over meta context /// requests can be useful for fine-grained testing of how a server /// handles unusual negotiation sequences. Often, use of this /// function is coupled with [set_request_meta_context](Handle::set_request_meta_context) to /// bypass the automatic context request normally performed by /// [opt_go](Handle::opt_go). /// /// To determine when the request completes, wait for /// [aio_is_connecting](Handle::aio_is_connecting) to return false. Or supply the optional /// `completion_callback` which will be invoked as described in /// libnbd(3)/Completion callbacks, except that it is automatically /// retired regardless of return value. Note that detecting whether the /// server returns an error (as is done by the return value of the /// synchronous counterpart) is only possible with a completion /// callback. pub fn aio_opt_set_meta_context_queries( &self, queries: impl IntoIterator>, context: impl FnMut(&[u8]) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, ) -> Result { // Convert all arguments to FFI-like types. let queries_ffi_c_strs: Vec = queries .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut queries_ffi_ptrs: Vec<*mut c_char> = queries_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); queries_ffi_ptrs.push(ptr::null_mut()); let queries_ffi = queries_ffi_ptrs.as_mut_ptr(); let context_ffi = unsafe { crate::bindings::context_to_raw(context) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_opt_set_meta_context_queries( self.handle, queries_ffi, context_ffi, completion_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// read from the NBD server /// /// Issue a read command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Note that you must ensure `buf` is valid until the command has /// completed. Furthermore, if the `error` parameter to /// `completion_callback` is set or if [aio_command_completed](Handle::aio_command_completed) /// reports failure, and if [get_pread_initialize](Handle::get_pread_initialize) returns true, /// then libnbd sanitized `buf`, but it is unspecified whether the /// contents of `buf` will read as zero or as partial results from the /// server. If [get_pread_initialize](Handle::get_pread_initialize) returns false, then /// libnbd did not sanitize `buf`, and the contents are undefined /// on failure. /// /// Other parameters behave as documented in [pread](Handle::pread). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_pread( &self, buf: &'static mut [u8], offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_mut_ptr() as *mut c_void; let count_ffi = buf.len(); let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_pread( self.handle, buf_ffi, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// read from the NBD server /// /// Issue a read command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Note that you must ensure `buf` is valid until the command has /// completed. Furthermore, if the `error` parameter to /// `completion_callback` is set or if [aio_command_completed](Handle::aio_command_completed) /// reports failure, and if [get_pread_initialize](Handle::get_pread_initialize) returns true, /// then libnbd sanitized `buf`, but it is unspecified whether the /// contents of `buf` will read as zero or as partial results from the /// server. If [get_pread_initialize](Handle::get_pread_initialize) returns false, then /// libnbd did not sanitize `buf`, and the contents are undefined /// on failure. /// /// Other parameters behave as documented in [pread_structured](Handle::pread_structured). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_pread_structured( &self, buf: &'static mut [u8], offset: u64, chunk: impl FnMut(&[u8], u64, c_uint, &mut c_int) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_mut_ptr() as *mut c_void; let count_ffi = buf.len(); let offset_ffi = offset; let chunk_ffi = unsafe { crate::bindings::chunk_to_raw(chunk) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_pread_structured( self.handle, buf_ffi, count_ffi, offset_ffi, chunk_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// write to the NBD server /// /// Issue a write command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Note that you must ensure `buf` is valid until the command has /// completed. Other parameters behave as documented in [pwrite](Handle::pwrite). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_pwrite( &self, buf: &'static [u8], offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let buf_ffi = buf.as_ptr() as *const c_void; let count_ffi = buf.len(); let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_pwrite( self.handle, buf_ffi, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// disconnect from the NBD server /// /// Issue the disconnect command to the NBD server. This is /// not a normal command because NBD servers are not obliged /// to send a reply. Instead you should wait for /// [aio_is_closed](Handle::aio_is_closed) to become true on the connection. Once this /// command is issued, you cannot issue any further commands. /// /// Although libnbd does not prevent you from issuing this command while /// still waiting on the replies to previous commands, the NBD protocol /// recommends that you wait until there are no other commands in flight /// (see [aio_in_flight](Handle::aio_in_flight)), to give the server a better chance at a /// clean shutdown. /// /// The `flags` parameter must be `0` for now (it exists for future NBD /// protocol extensions). There is no direct synchronous counterpart; /// however, [shutdown](Handle::shutdown) will call this function if appropriate. pub fn aio_disconnect(&self, flags: Option) -> Result<()> { // Convert all arguments to FFI-like types. let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_disconnect(self.handle, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// send flush command to the NBD server /// /// Issue the flush command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [flush](Handle::flush). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_flush( &self, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_flush(self.handle, completion_ffi, flags_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send trim command to the NBD server /// /// Issue a trim command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [trim](Handle::trim). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_trim( &self, count: u64, offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_trim( self.handle, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send cache (prefetch) command to the NBD server /// /// Issue the cache (prefetch) command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [cache](Handle::cache). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_cache( &self, count: u64, offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_cache( self.handle, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send write zeroes command to the NBD server /// /// Issue a write zeroes command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [zero](Handle::zero). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_zero( &self, count: u64, offset: u64, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_zero( self.handle, count_ffi, offset_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send block status command, with 32-bit callback /// /// Send the block status command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [block_status](Handle::block_status). /// /// This function is inherently limited to 32-bit values. If the /// server replies with a larger extent, the length of that extent /// will be truncated to just below 32 bits and any further extents /// from the server will be ignored. If the server replies with a /// status value larger than 32 bits (only possible when extended /// headers are in use), the callback function will be passed an /// `EOVERFLOW` error. To get the full extent information from a /// server that supports 64-bit extents, you must use /// [aio_block_status_64](Handle::aio_block_status_64). /// /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_block_status( &self, count: u64, offset: u64, extent: impl FnMut(&[u8], u64, &[u32], &mut c_int) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let extent_ffi = unsafe { crate::bindings::extent_to_raw(extent) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_block_status( self.handle, count_ffi, offset_ffi, extent_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send block status command, with 64-bit callback /// /// Send the block status command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [block_status_64](Handle::block_status_64). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_block_status_64( &self, count: u64, offset: u64, extent64: impl FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let extent64_ffi = unsafe { crate::bindings::extent64_to_raw(extent64) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_block_status_64( self.handle, count_ffi, offset_ffi, extent64_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// send filtered block status command to the NBD server /// /// Send a filtered block status command to the NBD server. /// /// To check if the command completed, call [aio_command_completed](Handle::aio_command_completed). /// Or supply the optional `completion_callback` which will be invoked /// as described in libnbd(3)/Completion callbacks. /// /// Other parameters behave as documented in [block_status_filter](Handle::block_status_filter). /// /// By default, libnbd will reject attempts to use this function with /// parameters that are likely to result in server failure, such as /// requesting an unknown command flag. The [set_strict_mode](Handle::set_strict_mode) /// function can be used to alter which scenarios should await a server /// reply rather than failing fast. pub fn aio_block_status_filter( &self, count: u64, offset: u64, contexts: impl IntoIterator>, extent64: impl FnMut(&[u8], u64, &[NbdExtent], &mut c_int) -> c_int + Send + Sync + 'static, completion: Option< impl FnMut(&mut c_int) -> c_int + Send + Sync + 'static, >, flags: Option, ) -> Result { // Convert all arguments to FFI-like types. let count_ffi = count; let offset_ffi = offset; let contexts_ffi_c_strs: Vec = contexts .into_iter() .map(|x| { CString::new(x.as_ref()).map_err(|e| Error::from(e.to_string())) }) .collect::>>()?; let mut contexts_ffi_ptrs: Vec<*mut c_char> = contexts_ffi_c_strs .iter() .map(|x| x.as_ptr().cast_mut()) .collect(); contexts_ffi_ptrs.push(ptr::null_mut()); let contexts_ffi = contexts_ffi_ptrs.as_mut_ptr(); let extent64_ffi = unsafe { crate::bindings::extent64_to_raw(extent64) }; let completion_ffi = match completion { Some(f) => unsafe { crate::bindings::completion_to_raw(f) }, None => sys::nbd_completion_callback { callback: None, free: None, user_data: ptr::null_mut(), }, }; let flags_ffi = flags.unwrap_or(CmdFlag::empty()).bits(); // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_block_status_filter( self.handle, count_ffi, offset_ffi, contexts_ffi, extent64_ffi, completion_ffi, flags_ffi, ) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(Cookie(ffi_ret.try_into().unwrap())) } } /// return file descriptor associated with this connection /// /// Return the underlying file descriptor associated with this /// connection. You can use this to check if the file descriptor /// is ready for reading or writing and call [aio_notify_read](Handle::aio_notify_read) /// or [aio_notify_write](Handle::aio_notify_write). See also [aio_get_direction](Handle::aio_get_direction). /// Do not do anything else with the file descriptor. pub fn aio_get_fd(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_get_fd(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret as RawFd) } } /// return the read or write direction /// /// Return the current direction of this connection, which means /// whether we are next expecting to read data from the server, write /// data to the server, or both. It returns /// /// /// - 0 /// /// We are not expected to interact with the server file descriptor from /// the current state. It is not worth attempting to use poll(2); if /// the connection is not dead, then state machine progress must instead /// come from some other means such as [aio_connect](Handle::aio_connect). /// /// - `LIBNBD_AIO_DIRECTION_READ` = 1 /// /// We are expected next to read from the server. If using poll(2) /// you would set `events = POLLIN`. If `revents` returns `POLLIN` /// or `POLLHUP` you would then call [aio_notify_read](Handle::aio_notify_read). /// /// Note that once libnbd reaches [aio_is_ready](Handle::aio_is_ready), this direction is /// returned even when there are no commands in flight (see /// [aio_in_flight](Handle::aio_in_flight)). In a single-threaded use of libnbd, it is not /// worth polling until after issuing a command, as otherwise the server /// will never wake up the poll. In a multi-threaded scenario, you can /// have one thread begin a polling loop prior to any commands, but any /// other thread that issues a command will need a way to kick the /// polling thread out of poll in case issuing the command changes the /// needed polling direction. Possible ways to do this include polling /// for activity on a pipe-to-self, or using pthread_kill(3) to send /// a signal that is masked except during ppoll(2). /// /// - `LIBNBD_AIO_DIRECTION_WRITE` = 2 /// /// We are expected next to write to the server. If using poll(2) /// you would set `events = POLLOUT`. If `revents` returns `POLLOUT` /// you would then call [aio_notify_write](Handle::aio_notify_write). /// /// - `LIBNBD_AIO_DIRECTION_BOTH` = 3 /// /// We are expected next to either read or write to the server. If using /// poll(2) you would set `events = POLLIN|POLLOUT`. If only one of /// `POLLIN` or `POLLOUT` is returned, then see above. However, if both /// are returned, it is better to call only [aio_notify_read](Handle::aio_notify_read), as /// processing the server's reply may change the state of the connection /// and invalidate the need to write more commands. /// pub fn aio_get_direction(&self) -> c_uint { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_get_direction(self.handle) }; // Convert the result to something more rusty. ffi_ret as c_uint } /// notify that the connection is readable /// /// Send notification to the state machine that the connection /// is readable. Typically this is called after your main loop /// has detected that the file descriptor associated with this /// connection is readable. pub fn aio_notify_read(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_notify_read(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// notify that the connection is writable /// /// Send notification to the state machine that the connection /// is writable. Typically this is called after your main loop /// has detected that the file descriptor associated with this /// connection is writable. pub fn aio_notify_write(&self) -> Result<()> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_notify_write(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// check if the connection has just been created /// /// Return true if this connection has just been created. This /// is the state before the handle has started connecting to a /// server. In this state the handle can start to be connected /// by calling functions such as [aio_connect](Handle::aio_connect). pub fn aio_is_created(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_created(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection is connecting or handshaking /// /// Return true if this connection is connecting to the server /// or in the process of handshaking and negotiating options /// which happens before the handle becomes ready to /// issue commands (see [aio_is_ready](Handle::aio_is_ready)). pub fn aio_is_connecting(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_connecting(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if connection is ready to send handshake option /// /// Return true if this connection is ready to start another option /// negotiation command while handshaking with the server. An option /// command will move back to the connecting state (see /// [aio_is_connecting](Handle::aio_is_connecting)). Note that this state cannot be /// reached unless requested by [set_opt_mode](Handle::set_opt_mode), and even then /// it only works with newstyle servers; an oldstyle server will skip /// straight to [aio_is_ready](Handle::aio_is_ready). pub fn aio_is_negotiating(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_negotiating(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection is in the ready state /// /// Return true if this connection is connected to the NBD server, /// the handshake has completed, and the connection is idle or /// waiting for a reply. In this state the handle is ready to /// issue commands. pub fn aio_is_ready(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_ready(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection is processing a command /// /// Return true if this connection is connected to the NBD server, /// the handshake has completed, and the connection is processing /// commands (either writing out a request or reading a reply). /// /// Note the ready state ([aio_is_ready](Handle::aio_is_ready)) is not included. /// In the ready state commands may be in flight (the server /// is processing them), but libnbd is not processing them. pub fn aio_is_processing(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_processing(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection is dead /// /// Return true if the connection has encountered a fatal /// error and is dead. In this state the handle may only be closed. /// There is no way to recover a handle from the dead state. pub fn aio_is_dead(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_dead(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the connection is closed /// /// Return true if the connection has closed. There is no way to /// reconnect a closed connection. Instead you must close the /// whole handle. pub fn aio_is_closed(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_is_closed(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// check if the command completed /// /// Return true if the command completed. If this function returns /// true then the command was successful and it has been retired. /// Return false if the command is still in flight. This can also /// fail with an error in case the command failed (in this case /// the command is also retired). A command is retired either via /// this command, or by using a completion callback which returns `1`. /// /// The `cookie` parameter is the positive unique 64 bit cookie /// for the command, as returned by a call such as [aio_pread](Handle::aio_pread). pub fn aio_command_completed(&self, cookie: u64) -> Result { // Convert all arguments to FFI-like types. let cookie_ffi = cookie; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_command_completed(self.handle, cookie_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(ffi_ret != 0) } } /// check if any command has completed /// /// Return the unique positive 64 bit cookie of the first non-retired but /// completed command, `0` if there are in-flight commands but none of /// them are awaiting retirement, or `-1` on error including when there /// are no in-flight commands. Any cookie returned by this function must /// still be passed to [aio_command_completed](Handle::aio_command_completed) to actually retire /// the command and learn whether the command was successful. pub fn aio_peek_command_completed(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_peek_command_completed(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// check how many aio commands are still in flight /// /// Return the number of in-flight aio commands that are still awaiting a /// response from the server before they can be retired. If this returns /// a non-zero value when requesting a disconnect from the server (see /// [aio_disconnect](Handle::aio_disconnect) and [shutdown](Handle::shutdown)), libnbd does not try to /// wait for those commands to complete gracefully; if the server strands /// commands while shutting down, [aio_command_completed](Handle::aio_command_completed) will report /// those commands as failed with a status of `ENOTCONN`. pub fn aio_in_flight(&self) -> Result { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_aio_in_flight(self.handle) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(TryInto::::try_into(ffi_ret).unwrap()) } } /// return string describing the state of the connection /// /// Returns a descriptive string for the state of the connection. This /// can be used for debugging or troubleshooting, but you should not /// rely on the state of connections since it may change in future /// versions. pub fn connection_state(&self) -> Result<&'static [u8]> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_connection_state(self.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(unsafe { CStr::from_ptr(ffi_ret) }.to_bytes()) } } /// return the name of the library /// /// Returns the name of the library, always `"libnbd"` unless /// the library was modified with another name at compile time. pub fn get_package_name(&self) -> &'static [u8] { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_package_name(self.handle) }; // Convert the result to something more rusty. unsafe { CStr::from_ptr(ffi_ret) }.to_bytes() } /// return the version of the library /// /// Return the version of libnbd. This is returned as a string /// in the form `"major.minor.release"` where each of major, minor /// and release is a small positive integer. For example: /// /// ```text /// minor /// ↓ /// "1.0.3" /// ↑ ↑ /// major release /// ``` /// /// /// - major = 0 /// /// The major number was `0` for the early experimental versions of /// libnbd where we still had an unstable API. /// /// - major = 1 /// /// The major number is `1` for the versions of libnbd with a /// long-term stable API and ABI. It is not anticipated that /// major will be any number other than `1`. /// /// - minor = 0, 2, ... (even) /// /// The minor number is even for stable releases. /// /// - minor = 1, 3, ... (odd) /// /// The minor number is odd for development versions. Note that /// new APIs added in a development version remain experimental /// and subject to change in that branch until they appear in a stable /// release. /// /// - release /// /// The release number is incremented for each release along a particular /// branch. /// pub fn get_version(&self) -> &'static [u8] { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_version(self.handle) }; // Convert the result to something more rusty. unsafe { CStr::from_ptr(ffi_ret) }.to_bytes() } /// kill server running as a subprocess /// /// This call may be used to kill the server running as a subprocess /// that was previously created using [connect_command](Handle::connect_command). You /// do not need to use this call. It is only needed if the server /// does not exit when the socket is closed. /// /// The `signum` parameter is the optional signal number to send /// (see signal(7)). If `signum` is `0` then `SIGTERM` is sent. pub fn kill_subprocess(&self, signum: c_int) -> Result<()> { // Convert all arguments to FFI-like types. let signum_ffi = signum; // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_kill_subprocess(self.handle, signum_ffi) }; // Convert the result to something more rusty. if ffi_ret < 0 { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok(()) } } /// true if libnbd was compiled with support for TLS /// /// Returns true if libnbd was compiled with gnutls which is required /// to support TLS encryption, or false if not. pub fn supports_tls(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_supports_tls(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// true if libnbd was compiled with support for AF_VSOCK /// /// Returns true if libnbd was compiled with support for the `AF_VSOCK` /// family of sockets, or false if not. /// /// Note that on the Linux operating system, this returns true if /// there is compile-time support, but you may still need runtime /// support for some aspects of AF_VSOCK usage; for example, use of /// `VMADDR_CID_LOCAL` as the server name requires that the /// vsock_loopback kernel module is loaded. pub fn supports_vsock(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_supports_vsock(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// true if libnbd was compiled with support for NBD URIs /// /// Returns true if libnbd was compiled with libxml2 which is required /// to support NBD URIs, or false if not. pub fn supports_uri(&self) -> bool { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_supports_uri(self.handle) }; // Convert the result to something more rusty. ffi_ret != 0 } /// construct an NBD URI for a connection /// /// This makes a best effort attempt to construct an NBD URI which /// could be used to connect back to the same server (using /// [connect_uri](Handle::connect_uri)). /// /// In some cases there is not enough information in the handle /// to successfully create a URI (eg. if you connected with /// [connect_socket](Handle::connect_socket)). In such cases the call returns /// `NULL` and further diagnostic information is available /// via `get_errno` and `get_error` as usual. /// /// Even if a URI is returned it is not guaranteed to work, and /// it may not be optimal. /// /// nbdinfo(1) --uri option is a way to access this API /// from shell scripts. pub fn get_uri(&self) -> Result> { // Convert all arguments to FFI-like types. // Call the FFI-function. let ffi_ret = unsafe { sys::nbd_get_uri(self.handle) }; // Convert the result to something more rusty. if ffi_ret.is_null() { Err(unsafe { Error::get_error(self.raw_handle()) }) } else { Ok({ let res = unsafe { CStr::from_ptr(ffi_ret) }.to_owned().into_bytes(); unsafe { libc::free(ffi_ret.cast()); } res }) } } } libnbd-1.20.3/rust/src/lib.rs0000644000175000017500000000237714551322006011417 // nbd client library in userspace // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[cfg(feature = "tokio")] mod async_bindings; #[cfg(feature = "tokio")] mod async_handle; mod bindings; mod error; mod handle; pub mod types; #[allow(unused)] mod utils; #[allow(unused)] #[cfg(feature = "tokio")] pub use async_bindings::*; #[cfg(feature = "tokio")] pub use async_handle::{AsyncHandle, SharedResult}; pub use bindings::*; pub use error::{Error, ErrorKind, FatalErrorKind, Result}; pub use handle::Handle; pub(crate) use libnbd_sys as sys; libnbd-1.20.3/rust/src/error.rs0000644000175000017500000001121614525371754012011 // nbd client library in userspace // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA use crate::sys; use errno::Errno; use std::ffi::{CStr, NulError}; use std::io; /// A general error type for libnbd. #[derive(Debug, thiserror::Error)] pub enum Error { /// Non fatal errors used when a command failed but the handle is not dead. /// /// If such an error is returned, it may still makes sense to call further /// commands on the handle. #[error(transparent)] Recoverable(ErrorKind), /// A fatal error. After such an error, the handle is dead and there is no /// point in issuing further commands. #[error("Fatal: NBD handle is dead: {0}")] Fatal(FatalErrorKind), } /// An error kind for a Libnbd related error. #[derive(Debug, thiserror::Error)] pub enum ErrorKind { #[error("Errno: {errno}: {description}")] WithErrno { errno: Errno, description: String }, #[error("{description}")] WithoutErrno { description: String }, #[error(transparent)] Errno(#[from] Errno), } /// The kind of a fatal error. #[derive(Debug, thiserror::Error)] pub enum FatalErrorKind { /// A Libnbd related error. #[error(transparent)] Libnbd(#[from] ErrorKind), /// Some other io error. #[error(transparent)] Io(#[from] io::Error), } pub type Result = std::result::Result; impl ErrorKind { /// Retrieve the last error from libnbd in the current thread. pub(crate) unsafe fn get_error() -> Self { let description = CStr::from_ptr(sys::nbd_get_error()) .to_string_lossy() .to_string(); match sys::nbd_get_errno() { 0 => Self::WithoutErrno { description }, e => Self::WithErrno { description, errno: Errno(e), }, } } /// Create an error from an errno value without any additional description. pub fn from_errno(val: i32) -> Self { Self::Errno(Errno(val)) } /// Get the errno value if any. pub fn errno(&self) -> Option { match self { Self::WithErrno { errno: Errno(x), .. } | Self::Errno(Errno(x)) => Some(*x), Self::WithoutErrno { .. } => None, } } } impl Error { /// Retrieve the last error from libnbd in the current thread and check if /// the handle is dead to determine if the error is fatal or not. pub(crate) unsafe fn get_error(handle: *mut sys::nbd_handle) -> Self { let kind = ErrorKind::get_error(); if sys::nbd_aio_is_dead(handle) != 0 { Self::Fatal(FatalErrorKind::Libnbd(kind)) } else { Self::Recoverable(kind) } } /// Get the errno value if any. pub fn errno(&self) -> Option { match self { Self::Recoverable(e) | Self::Fatal(FatalErrorKind::Libnbd(e)) => { e.errno() } Self::Fatal(FatalErrorKind::Io(e)) => e.raw_os_error(), } } /// Check if this is a fatal error. pub fn is_fatal(&self) -> bool { match self { Self::Fatal(_) => true, Self::Recoverable(_) => false, } } /// Check if this is a recoverable error. pub fn is_recoverable(&self) -> bool { match self { Self::Recoverable(_) => true, Self::Fatal(_) => false, } } /// Turn this error to a [FatalErrorKind]. pub fn to_fatal(self) -> FatalErrorKind { match self { Self::Fatal(e) => e, Self::Recoverable(e) => FatalErrorKind::Libnbd(e), } } } impl From for Error { fn from(err: io::Error) -> Self { Self::Fatal(err.into()) } } impl From for Error { fn from(description: String) -> Self { Self::Recoverable(ErrorKind::WithoutErrno { description }) } } impl From for Error { fn from(e: NulError) -> Self { e.to_string().into() } } libnbd-1.20.3/rust/src/handle.rs0000644000175000017500000000402614525371754012114 // nbd client library in userspace // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA use crate::sys; use crate::{Error, ErrorKind, Result}; /// An NBD client handle. #[derive(Debug)] pub struct Handle { /// A pointer to the raw handle. pub(crate) handle: *mut sys::nbd_handle, } impl Handle { pub fn new() -> Result { let handle = unsafe { sys::nbd_create() }; if handle.is_null() { Err(unsafe { Error::Fatal(ErrorKind::get_error().into()) }) } else { #[allow(unused_mut)] let mut nbd = Handle { handle }; #[cfg(feature = "log")] { nbd.set_debug_callback(|func_name, msg| { log::debug!( target: String::from_utf8_lossy(func_name).as_ref(), "{}", String::from_utf8_lossy(msg) ); 0 })?; nbd.set_debug(true)?; } Ok(nbd) } } /// Get the underlying C pointer to the handle. pub(crate) fn raw_handle(&self) -> *mut sys::nbd_handle { self.handle } } impl Drop for Handle { fn drop(&mut self) { unsafe { sys::nbd_close(self.handle) } } } unsafe impl Send for Handle {} unsafe impl Sync for Handle {} libnbd-1.20.3/rust/src/types.rs0000644000175000017500000000166614603471075012026 // nbd client library in userspace // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA pub struct Cookie(pub u64); #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub struct NbdExtent { pub length: u64, pub flags: u64, } libnbd-1.20.3/rust/src/utils.rs0000644000175000017500000000237014525371754012021 // nbd client library in userspace // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA use std::ffi::c_void; /// Take a C pointer to some rust data of type `T` on the heap and drop it. pub unsafe extern "C" fn drop_data(data: *mut c_void) { drop(Box::from_raw(data as *mut T)) } /// Turn a [FnOnce] (with a single `&mut` argument) to a [FnMut] /// which panics on the second invocation. pub fn fn_once_to_fn_mut( f: impl FnOnce(&mut T) -> U, ) -> impl FnMut(&mut T) -> U { let mut f = Some(f); move |x| (f.take().unwrap())(x) } libnbd-1.20.3/rust/src/async_handle.rs0000644000175000017500000002516214525371754013315 // nbd client library in userspace // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA // This module implements an asynchronous handle working on top of the // [Tokio](https://tokio.rs) runtime. When the handle is created, // a "polling task" is spawned on the Tokio runtime. The purpose of that // "polling task" is to call `aio_notify_*` when appropriate. It shares a // reference to the handle as well as some other things with the handle in the // [HandleData] struct. The "polling task" is sleeping when no command is in // flight, but wakes up as soon as any command is issued. // // The commands are implemented as // [`async fn`s](https://doc.rust-lang.org/std/keyword.async.html) // in async_bindings.rs. When a new command is issued, it registers a // completion predicate with [Handle::add_command]. That predicate takes a // reference to the handle and should return [true] iff the command is complete. // Whenever some work is performed in the polling task, the completion // predicates for all pending commands are called. use crate::sys; use crate::Handle; use crate::{Error, FatalErrorKind, Result}; use crate::{AIO_DIRECTION_BOTH, AIO_DIRECTION_READ, AIO_DIRECTION_WRITE}; use mio::unix::SourceFd; use mio::{Events, Interest as MioInterest, Poll, Token}; use std::sync::Arc; use std::sync::Mutex; use std::time::Duration; use tokio::io::{unix::AsyncFd, Interest, Ready as IoReady}; use tokio::sync::Notify; use tokio::task; /// A custom result type with a shared [crate::Error] as default error type. pub type SharedResult> = Result; /// An NBD handle using Rust's `async` functionality on top of the /// [Tokio](https://docs.rs/tokio/) runtime. pub struct AsyncHandle { /// Data shared both by this struct and the polling task. pub(crate) data: Arc, /// A task which sole purpose is to poll the NBD handle. polling_task: tokio::task::AbortHandle, } pub(crate) struct HandleData { /// The underlying handle. pub handle: Handle, /// A list of all pending commands. /// /// For every pending command (commands in flight), a predicate will be /// stored in this list. Whenever some progress is made on the file /// descriptor, the predicate is called with a reference to the handle /// and a reference to the result of that call to `aio_notify_*`. /// Iff the predicate returns [true], the command is considered completed /// and removed from this list. /// /// If the polling task dies for some reason, this [SharedResult] will be /// set to some error. pub pending_commands: Mutex< SharedResult< Vec< Box< dyn FnMut(&Handle, &SharedResult<()>) -> bool + Send + Sync + 'static, >, >, >, >, /// A notifier used by commands to notify the polling task when a new /// asynchronous command is issued. pub new_command: Notify, } impl AsyncHandle { pub fn new() -> Result { let handle_data = Arc::new(HandleData { handle: Handle::new()?, pending_commands: Mutex::new(Ok(Vec::new())), new_command: Notify::new(), }); let handle_data_2 = handle_data.clone(); let polling_task = task::spawn(async move { // The polling task should never finish without an error. If the // handle is dropped, the task is aborted so it won't return in // that case either. let Err(err) = polling_task(&handle_data_2).await else { unreachable!() }; let err = Arc::new(Error::Fatal(err)); // Call the completion predicates for all pending commands with the // error. let mut pending_cmds = handle_data_2.pending_commands.lock().unwrap(); let res = Err(err); for f in pending_cmds.as_mut().unwrap().iter_mut() { f(&handle_data_2.handle, &res); } *pending_cmds = Err(res.unwrap_err()); }) .abort_handle(); Ok(Self { data: handle_data, polling_task, }) } /// Get the underlying C pointer to the handle. pub(crate) fn raw_handle(&self) -> *mut sys::nbd_handle { self.data.handle.raw_handle() } /// Call this method when a new command is issued. It takes as argument a /// predicate which should return [true] iff the command is completed. pub(crate) fn add_command( &self, mut completion_predicate: impl FnMut(&Handle, &SharedResult<()>) -> bool + Send + Sync + 'static, ) -> SharedResult<()> { if !completion_predicate(&self.data.handle, &Ok(())) { let mut pending_cmds_lock = self.data.pending_commands.lock().unwrap(); pending_cmds_lock .as_mut() .map_err(|e| e.clone())? .push(Box::new(completion_predicate)); self.data.new_command.notify_one(); } Ok(()) } } impl Drop for AsyncHandle { fn drop(&mut self) { self.polling_task.abort(); } } /// Get the read/write direction that the handle wants on the file descriptor. fn get_fd_interest(handle: &Handle) -> Option { match handle.aio_get_direction() { 0 => None, AIO_DIRECTION_READ => Some(Interest::READABLE), AIO_DIRECTION_WRITE => Some(Interest::WRITABLE), AIO_DIRECTION_BOTH => Some(Interest::READABLE | Interest::WRITABLE), _ => unreachable!(), } } /// A task that will run as long as the handle is alive. It will poll the /// file descriptor when new data is available. async fn polling_task(handle_data: &HandleData) -> Result<(), FatalErrorKind> { let HandleData { handle, pending_commands, new_command, } = handle_data; let fd = handle.aio_get_fd().map_err(Error::to_fatal)?; let tokio_fd = AsyncFd::new(fd)?; let mut events = Events::with_capacity(1); let mut poll = Poll::new()?; // The following loop does approximately the following things: // // 1. Determine what Libnbd wants to do next on the file descriptor, // (read/write/both/none), and store that in [fd_interest]. // 2. Wait for either: // a) That interest to be available on the file descriptor in which case: // I. Call the correct `aio_notify_*` method. // II. Execute step 1. // III. Send the result of the call to `aio_notify_*` on // [result_channel] to notify pending commands that some progress // has been made. // IV. Resume execution from step 2. // b) A notification was received on [new_command] signaling that a new // command was registered and that the interest on the file descriptor // might have changed. Resume execution from step 1. loop { let Some(fd_interest) = get_fd_interest(handle) else { // The handle does not wait for any data of the file descriptor, // so we wait until some command is issued. new_command.notified().await; continue; }; if pending_commands .lock() .unwrap() .as_ref() .unwrap() .is_empty() { // No command is pending so there is no point to do anything. new_command.notified().await; continue; } // Wait for the requested interest to be available on the fd. let mut ready_guard = tokio_fd.ready(fd_interest).await?; let readiness = ready_guard.ready(); let res = if readiness.is_readable() && fd_interest.is_readable() { handle.aio_notify_read() } else if readiness.is_writable() && fd_interest.is_writable() { handle.aio_notify_write() } else { continue; }; let res = match res { Ok(()) => Ok(()), Err(e @ Error::Recoverable(_)) => Err(Arc::new(e)), Err(Error::Fatal(e)) => return Err(e), }; // Call the completion predicates of all pending commands. let mut pending_cmds_lock = pending_commands.lock().unwrap(); let pending_cmds = pending_cmds_lock.as_mut().unwrap(); let mut i = 0; while i < pending_cmds.len() { if (pending_cmds[i])(handle, &res) { let _ = pending_cmds.swap_remove(i); } else { i += 1; } } drop(pending_cmds_lock); // Use mio poll to check the current read/write availability on the fd. // This is needed because Tokio supports only edge-triggered // notifications but Libnbd requires level-triggered notifications. // Setting timeout to 0 means that it will return immediately. // mio states that it is OS-dependent on whether a single event // can be both readable and writable, but we survive just fine // if we only see one direction even when both are available. poll.registry().register( &mut SourceFd(&fd), Token(0), MioInterest::READABLE | MioInterest::WRITABLE, )?; match poll.poll(&mut events, Some(Duration::ZERO)) { Ok(_) => { for event in &events { if !event.is_readable() { ready_guard.clear_ready_matching(IoReady::READABLE); } if !event.is_writable() { ready_guard.clear_ready_matching(IoReady::WRITABLE); } } } Err(_) => { ready_guard.clear_ready_matching(IoReady::READABLE); ready_guard.clear_ready_matching(IoReady::WRITABLE); } }; ready_guard.retain_ready(); poll.registry().deregister(&mut SourceFd(&fd))?; } } libnbd-1.20.3/rust/tests/0000755000175000017500000000000014675532655010751 5libnbd-1.20.3/rust/tests/nbdkit_pattern/0000755000175000017500000000000014675532655013761 5libnbd-1.20.3/rust/tests/nbdkit_pattern/mod.rs0000644000175000017500000000215614525371754015025 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA use once_cell::sync::Lazy; /// The byte pattern as described in nbdkit-PATTERN-plugin(1). pub static PATTERN: Lazy> = Lazy::new(|| { let mut pattern = Vec::with_capacity(512); for i in 0u64..64 { pattern.extend_from_slice((i * 8).to_be_bytes().as_slice()); } assert_eq!(pattern.len(), 512); pattern }); libnbd-1.20.3/rust/tests/test_log/0000755000175000017500000000000014675532655012571 5libnbd-1.20.3/rust/tests/test_log/mod.rs0000644000175000017500000000565114525371754013640 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA //! This module provides facilities for capturing log output and asserting that //! it does or does not contain certain messages. The primary use of this module //! is to assert that certain libnbd operations are or are not performed. #![allow(unused)] use std::sync::Mutex; /// Logger that stores all debug messages in a list. pub struct DebugLogger { /// All targets and messages logged. Wrapped in a mutex so that it can be /// updated with an imutable reference to self. entries: Mutex>, is_initialized: Mutex, } impl DebugLogger { const fn new() -> Self { Self { entries: Mutex::new(Vec::new()), is_initialized: Mutex::new(false), } } /// Set this logger as the global logger. pub fn init(&'static self) { let mut is_initialized = self.is_initialized.lock().unwrap(); if !*is_initialized { log::set_logger(self).unwrap(); log::set_max_level(log::LevelFilter::Debug); *is_initialized = true; } } /// Check wether a specific message has been logged. pub fn contains(&self, msg: &str) -> bool { self.entries.lock().unwrap().iter().any(|(_, x)| x == msg) } /// Print all logged messages, in no particular order. /// /// Only for debug purposes. Remember to run cargo test with the `-- /// --nocapture` arguments. That is, from the rust directory run: /// `./../run cargo test -- --nocapture` pub fn print_messages(&self) { for (target, msg) in self.entries.lock().unwrap().iter() { eprintln!("{target}: {msg}"); } } } /// A static global `DebugLogger`. Just call `.init()` on this to set it as the /// global logger. pub static DEBUG_LOGGER: DebugLogger = DebugLogger::new(); impl log::Log for DebugLogger { fn enabled(&self, metadata: &log::Metadata<'_>) -> bool { metadata.level() == log::Level::Debug } fn log(&self, record: &log::Record<'_>) { self.entries .lock() .unwrap() .push((record.target().to_string(), record.args().to_string())); } fn flush(&self) {} } libnbd-1.20.3/rust/tests/test_100_handle.rs0000644000175000017500000000170114525371754014103 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA //! Just check that we can link with libnbd and create a handle. #![deny(warnings)] #[test] fn test_nbd_handle_new() { let _ = libnbd::Handle::new().unwrap(); } libnbd-1.20.3/rust/tests/test_110_defaults.rs0000644000175000017500000000253714525371754014470 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[test] fn test_defaults() { let nbd = libnbd::Handle::new().unwrap(); assert!(nbd.get_export_name().unwrap().is_empty()); assert!(!nbd.get_full_info().unwrap()); assert_eq!(nbd.get_tls(), libnbd::Tls::Disable); assert!(nbd.get_request_extended_headers()); assert!(nbd.get_request_structured_replies()); assert!(nbd.get_request_meta_context().unwrap()); assert!(nbd.get_request_block_size().unwrap()); assert!(nbd.get_pread_initialize()); assert!(nbd.get_handshake_flags().is_all()); assert!(!nbd.get_opt_mode()); } libnbd-1.20.3/rust/tests/test_120_set_non_defaults.rs0000644000175000017500000000361614525371754016215 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[test] fn test_set_non_defaults() { let nbd = libnbd::Handle::new().unwrap(); nbd.set_export_name("name").unwrap(); assert_eq!(nbd.get_export_name().unwrap(), b"name"); nbd.set_full_info(true).unwrap(); assert!(nbd.get_full_info().unwrap()); if nbd.supports_tls() { nbd.set_tls(libnbd::Tls::Allow).unwrap(); assert_eq!(nbd.get_tls(), libnbd::Tls::Allow); } nbd.set_request_extended_headers(false).unwrap(); assert!(!nbd.get_request_extended_headers()); nbd.set_request_structured_replies(false).unwrap(); assert!(!nbd.get_request_structured_replies()); nbd.set_request_meta_context(false).unwrap(); assert!(!nbd.get_request_meta_context().unwrap()); nbd.set_request_block_size(false).unwrap(); assert!(!nbd.get_request_block_size().unwrap()); nbd.set_pread_initialize(false).unwrap(); assert!(!nbd.get_pread_initialize()); nbd.set_handshake_flags(libnbd::HandshakeFlag::empty()) .unwrap(); assert!(nbd.get_handshake_flags().is_empty()); nbd.set_opt_mode(true).unwrap(); assert!(nbd.get_opt_mode()); } libnbd-1.20.3/rust/tests/test_130_private_data.rs0000644000175000017500000000206414525371754015321 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[test] fn test_private_data() { let nbd = libnbd::Handle::new().unwrap(); assert_eq!(nbd.get_private_data(), 0); assert_eq!(nbd.set_private_data(42), 0); assert_eq!(nbd.set_private_data(314), 42); assert_eq!(nbd.get_private_data(), 314); } libnbd-1.20.3/rust/tests/test_140_explicit_close.rs0000644000175000017500000000201214525371754015656 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] mod test_log; use test_log::DEBUG_LOGGER; #[test] fn test_private_data() { DEBUG_LOGGER.init(); let nbd = libnbd::Handle::new().unwrap(); drop(nbd); assert!(DEBUG_LOGGER.contains("closing handle")); } libnbd-1.20.3/rust/tests/test_200_connect_command.rs0000644000175000017500000000174414525371754016007 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[test] fn test_connect_command() { let nbd = libnbd::Handle::new().unwrap(); nbd.connect_command(&["nbdkit", "-s", "--exit-with-parent", "-v", "null"]) .unwrap(); } libnbd-1.20.3/rust/tests/test_210_opt_abort.rs0000644000175000017500000000230314525371754014642 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[test] fn test_opt_abort() { let nbd = libnbd::Handle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&["nbdkit", "-s", "--exit-with-parent", "-v", "null"]) .unwrap(); assert_eq!(nbd.get_protocol().unwrap(), b"newstyle-fixed"); assert!(nbd.get_structured_replies_negotiated().unwrap()); nbd.opt_abort().unwrap(); assert!(nbd.aio_is_closed()); } libnbd-1.20.3/rust/tests/test_220_opt_list.rs0000644000175000017500000000535414525371754014520 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::env; use std::os::unix::ffi::OsStringExt as _; use std::path::Path; use std::sync::Arc; use std::sync::Mutex; /// Test different types of connections. struct ConnTester { script_path: String, } impl ConnTester { fn new() -> Self { let srcdir = env::var("srcdir").unwrap(); let srcdir = Path::new(&srcdir); let script_path = srcdir.join("../tests/opt-list.sh"); let script_path = String::from_utf8(script_path.into_os_string().into_vec()).unwrap(); Self { script_path } } fn connect( &self, mode: u8, expected_exports: &[&str], ) -> libnbd::Result<()> { let nbd = libnbd::Handle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", &self.script_path, &format!("mode={mode}"), ]) .unwrap(); // Collect all exports in this list. let exports = Arc::new(Mutex::new(Vec::new())); let exports_clone = exports.clone(); let count = nbd.opt_list(move |name, _| { exports_clone .lock() .unwrap() .push(String::from_utf8(name.to_owned()).unwrap()); 0 })?; let exports = Arc::try_unwrap(exports).unwrap().into_inner().unwrap(); assert_eq!(exports.len(), count as usize); assert_eq!(exports.len(), expected_exports.len()); for (export, &expected) in exports.iter().zip(expected_exports) { assert_eq!(export, expected); } Ok(()) } } #[test] fn test_opt_list() { let conn_tester = ConnTester::new(); assert!(conn_tester.connect(0, &[]).is_err()); assert!(conn_tester.connect(1, &["a", "b"]).is_ok()); assert!(conn_tester.connect(2, &[]).is_ok()); assert!(conn_tester.connect(3, &["a"]).is_ok()); } libnbd-1.20.3/rust/tests/test_230_opt_info.rs0000644000175000017500000001051114525371754014470 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use libnbd::CONTEXT_BASE_ALLOCATION; use std::env; use std::path::Path; #[test] fn test_opt_info() { let srcdir = env::var("srcdir").unwrap(); let srcdir = Path::new(&srcdir); let script_path = srcdir.join("../tests/opt-info.sh"); let script_path = script_path.to_str().unwrap(); let nbd = libnbd::Handle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script_path, ]) .unwrap(); nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); // No size, flags, or meta-contexts yet assert!(nbd.get_size().is_err()); assert!(nbd.is_read_only().is_err()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // info with no prior name gets info on "" assert!(nbd.opt_info().is_ok()); assert_eq!(nbd.get_size().unwrap(), 0); assert!(nbd.is_read_only().unwrap()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // changing export wipes out prior info nbd.set_export_name("b").unwrap(); assert!(nbd.get_size().is_err()); assert!(nbd.is_read_only().is_err()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // info on something not present fails nbd.set_export_name("a").unwrap(); assert!(nbd.opt_info().is_err()); // info for a different export, with automatic meta_context disabled nbd.set_export_name("b").unwrap(); nbd.set_request_meta_context(false).unwrap(); nbd.opt_info().unwrap(); // idempotent name change is no-op nbd.set_export_name("b").unwrap(); assert_eq!(nbd.get_size().unwrap(), 1); assert!(!nbd.is_read_only().unwrap()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); nbd.set_request_meta_context(true).unwrap(); // go on something not present nbd.set_export_name("a").unwrap(); assert!(nbd.opt_go().is_err()); assert!(nbd.get_size().is_err()); assert!(nbd.is_read_only().is_err()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // go on a valid export nbd.set_export_name("good").unwrap(); nbd.opt_go().unwrap(); assert_eq!(nbd.get_size().unwrap(), 4); assert!(nbd.is_read_only().unwrap()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // now info is no longer valid, but does not wipe data assert!(nbd.set_export_name("a").is_err()); assert_eq!(nbd.get_export_name().unwrap(), b"good"); assert!(nbd.opt_info().is_err()); assert_eq!(nbd.get_size().unwrap(), 4); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); nbd.shutdown(None).unwrap(); // Another connection. This time, check that SET_META triggered by opt_info // persists through nbd_opt_go with set_request_meta_context disabled. let nbd = libnbd::Handle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", &script_path, ]) .unwrap(); nbd.add_meta_context("x-unexpected:bogus").unwrap(); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); nbd.opt_info().unwrap(); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); nbd.set_request_meta_context(false).unwrap(); // Adding to the request list now won't matter nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); nbd.opt_go().unwrap(); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); } libnbd-1.20.3/rust/tests/test_240_opt_list_meta.rs0000644000175000017500000001105514525371754015523 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::sync::Arc; use std::sync::Mutex; /// A struct with information about listed meta contexts. #[derive(Debug, Clone, PartialEq, Eq)] struct CtxInfo { /// Whether the meta context "base:alloc" is listed. has_alloc: bool, /// The number of listed meta contexts. count: u32, } fn list_meta_ctxs(nbd: &libnbd::Handle) -> libnbd::Result { let info = Arc::new(Mutex::new(CtxInfo { has_alloc: false, count: 0, })); let info_clone = info.clone(); let replies = nbd.opt_list_meta_context(move |ctx| { let mut info = info_clone.lock().unwrap(); info.count += 1; if ctx == libnbd::CONTEXT_BASE_ALLOCATION { info.has_alloc = true; } 0 })?; let info = Arc::try_unwrap(info).unwrap().into_inner().unwrap(); assert_eq!(info.count, replies); Ok(info) } #[test] fn test_opt_list_meta() { let nbd = libnbd::Handle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .unwrap(); // First pass: empty query should give at least "base:allocation". let info = list_meta_ctxs(&nbd).unwrap(); assert!(info.count >= 1); assert!(info.has_alloc); let max = info.count; // Second pass: bogus query has no response. nbd.add_meta_context("x-nosuch:").unwrap(); assert_eq!( list_meta_ctxs(&nbd).unwrap(), CtxInfo { count: 0, has_alloc: false } ); // Third pass: specific query should have one match. nbd.add_meta_context("base:allocation").unwrap(); assert_eq!(nbd.get_nr_meta_contexts().unwrap(), 2); assert_eq!(nbd.get_meta_context(1).unwrap(), b"base:allocation"); assert_eq!( list_meta_ctxs(&nbd).unwrap(), CtxInfo { count: 1, has_alloc: true } ); // Fourth pass: opt_list_meta_context is stateless, so it should // not wipe status learned during opt_info assert!(nbd.can_meta_context("base:allocation").is_err()); assert!(nbd.get_size().is_err()); nbd.opt_info().unwrap(); assert_eq!(nbd.get_size().unwrap(), 1048576); assert!(nbd.can_meta_context("base:allocation").unwrap()); nbd.clear_meta_contexts().unwrap(); nbd.add_meta_context("x-nosuch:").unwrap(); assert_eq!( list_meta_ctxs(&nbd).unwrap(), CtxInfo { count: 0, has_alloc: false } ); assert_eq!(nbd.get_size().unwrap(), 1048576); assert!(nbd.can_meta_context("base:allocation").unwrap()); // Final pass: "base:" query should get at least "base:allocation" nbd.add_meta_context("base:").unwrap(); let info = list_meta_ctxs(&nbd).unwrap(); assert!(info.count >= 1); assert!(info.count <= max); assert!(info.has_alloc); // Repeat but this time without structured replies. Deal gracefully // with older servers that don't allow the attempt. let nbd = libnbd::Handle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.set_request_structured_replies(false).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .unwrap(); let bytes = nbd.stats_bytes_sent(); if let Ok(info) = list_meta_ctxs(&nbd) { assert!(info.count >= 1); assert!(info.has_alloc) } else { assert!(nbd.stats_bytes_sent() > bytes); // ignoring failure from old server } // Now enable structured replies, and a retry should pass. assert!(nbd.opt_structured_reply().unwrap()); let info = list_meta_ctxs(&nbd).unwrap(); assert!(info.count >= 1); assert!(info.has_alloc); } libnbd-1.20.3/rust/tests/test_245_opt_list_meta_queries.rs0000644000175000017500000000531514525371754017267 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::sync::Arc; use std::sync::Mutex; /// A struct with information about listed meta contexts. #[derive(Debug, Clone, PartialEq, Eq)] struct CtxInfo { /// Whether the meta context "base:allocation" is listed. has_alloc: bool, /// The number of listed meta contexts. count: u32, } fn list_meta_ctxs( nbd: &libnbd::Handle, queries: &[&[u8]], ) -> libnbd::Result { let info = Arc::new(Mutex::new(CtxInfo { has_alloc: false, count: 0, })); let info_clone = info.clone(); let replies = nbd.opt_list_meta_context_queries(queries, move |ctx| { let mut info = info_clone.lock().unwrap(); info.count += 1; if ctx == libnbd::CONTEXT_BASE_ALLOCATION { info.has_alloc = true; } 0 })?; let info = Arc::try_unwrap(info).unwrap().into_inner().unwrap(); assert_eq!(info.count, replies); Ok(info) } #[test] fn test_opt_list_meta_queries() { let nbd = libnbd::Handle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .unwrap(); // First pass: empty query should give at least "base:allocation". nbd.add_meta_context("x-nosuch:").unwrap(); let info = list_meta_ctxs(&nbd, &[]).unwrap(); assert!(info.count >= 1); assert!(info.has_alloc); // Second pass: bogus query has no response. nbd.clear_meta_contexts().unwrap(); assert_eq!( list_meta_ctxs(&nbd, &[b"x-nosuch:"]).unwrap(), CtxInfo { count: 0, has_alloc: false } ); // Third pass: specific query should have one match. assert_eq!( list_meta_ctxs(&nbd, &[b"x-nosuch:", libnbd::CONTEXT_BASE_ALLOCATION]) .unwrap(), CtxInfo { count: 1, has_alloc: true } ); } libnbd-1.20.3/rust/tests/test_250_opt_set_meta.rs0000644000175000017500000001012714525371754015343 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use libnbd::CONTEXT_BASE_ALLOCATION; use std::sync::Arc; use std::sync::Mutex; /// A struct with information about set meta contexts. #[derive(Debug, Clone, PartialEq, Eq)] struct CtxInfo { /// Whether the meta context "base:allocation" is set. has_alloc: bool, /// The number of set meta contexts. count: u32, } fn set_meta_ctxs(nbd: &libnbd::Handle) -> libnbd::Result { let info = Arc::new(Mutex::new(CtxInfo { has_alloc: false, count: 0, })); let info_clone = info.clone(); let replies = nbd.opt_set_meta_context(move |ctx| { let mut info = info_clone.lock().unwrap(); info.count += 1; if ctx == CONTEXT_BASE_ALLOCATION { info.has_alloc = true; } 0 })?; let info = Arc::try_unwrap(info).unwrap().into_inner().unwrap(); assert_eq!(info.count, replies); Ok(info) } #[test] fn test_opt_set_meta() { let nbd = libnbd::Handle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.set_request_structured_replies(false).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .unwrap(); // No contexts negotiated yet; can_meta should be error if any requested assert!(!nbd.get_structured_replies_negotiated().unwrap()); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // SET cannot succeed until SR is negotiated. assert!(nbd.opt_structured_reply().unwrap()); assert!(nbd.get_structured_replies_negotiated().unwrap()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // nbdkit does not match wildcard for SET, even though it does for LIST nbd.clear_meta_contexts().unwrap(); nbd.add_meta_context("base:").unwrap(); assert_eq!( set_meta_ctxs(&nbd).unwrap(), CtxInfo { count: 0, has_alloc: false } ); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Negotiating with no contexts is not an error, but selects nothing nbd.clear_meta_contexts().unwrap(); assert_eq!( set_meta_ctxs(&nbd).unwrap(), CtxInfo { count: 0, has_alloc: false } ); // Request 2 with expectation of 1; with set_request_meta_context off nbd.add_meta_context("x-nosuch:context").unwrap(); nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); nbd.set_request_meta_context(false).unwrap(); assert_eq!( set_meta_ctxs(&nbd).unwrap(), CtxInfo { count: 1, has_alloc: true } ); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Transition to transmission phase; our last set should remain active nbd.clear_meta_contexts().unwrap(); nbd.add_meta_context("x-nosuch:context").unwrap(); nbd.opt_go().unwrap(); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Now too late to set; but should not lose earlier state assert!(set_meta_ctxs(&nbd).is_err()); assert_eq!(nbd.get_size().unwrap(), 1048576); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); } libnbd-1.20.3/rust/tests/test_255_opt_set_meta_queries.rs0000644000175000017500000000647214525371754017115 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use libnbd::CONTEXT_BASE_ALLOCATION; use std::sync::Arc; use std::sync::Mutex; /// A struct with information about set meta contexts. #[derive(Debug, Clone, PartialEq, Eq)] struct CtxInfo { /// Whether the meta context "base:allocation" is set. has_alloc: bool, /// The number of set meta contexts. count: u32, } fn set_meta_ctxs_queries( nbd: &libnbd::Handle, queries: &[impl AsRef<[u8]>], ) -> libnbd::Result { let info = Arc::new(Mutex::new(CtxInfo { has_alloc: false, count: 0, })); let info_clone = info.clone(); let replies = nbd.opt_set_meta_context_queries(queries, move |ctx| { let mut info = info_clone.lock().unwrap(); info.count += 1; if ctx == CONTEXT_BASE_ALLOCATION { info.has_alloc = true; } 0 })?; let info = Arc::try_unwrap(info).unwrap().into_inner().unwrap(); assert_eq!(info.count, replies); Ok(info) } #[test] fn test_opt_set_meta_queries() { let nbd = libnbd::Handle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .unwrap(); // nbdkit does not match wildcard for SET, even though it does for LIST assert_eq!( set_meta_ctxs_queries(&nbd, &["base:"]).unwrap(), CtxInfo { count: 0, has_alloc: false } ); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Negotiating with no contexts is not an error, but selects nothing // An explicit empty list overrides a non-empty implicit list. nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); assert_eq!( set_meta_ctxs_queries(&nbd, &[] as &[&str]).unwrap(), CtxInfo { count: 0, has_alloc: false } ); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Request 2 with expectation of 1. assert_eq!( set_meta_ctxs_queries( &nbd, &[b"x-nosuch:context".as_slice(), CONTEXT_BASE_ALLOCATION] ) .unwrap(), CtxInfo { count: 1, has_alloc: true } ); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Transition to transmission phase; our last set should remain active nbd.set_request_meta_context(false).unwrap(); nbd.opt_go().unwrap(); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); } libnbd-1.20.3/rust/tests/test_300_get_size.rs0000644000175000017500000000211614525371754014464 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[test] fn test_get_size() { let nbd = libnbd::Handle::new().unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "null", "size=1M", ]) .unwrap(); assert_eq!(nbd.get_size().unwrap(), 1048576); } libnbd-1.20.3/rust/tests/test_400_pread.rs0000644000175000017500000000231114525371754013744 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] mod nbdkit_pattern; use nbdkit_pattern::PATTERN; #[test] fn test_pread() { let nbd = libnbd::Handle::new().unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "pattern", "size=1M", ]) .unwrap(); let mut buf = [0; 512]; nbd.pread(&mut buf, 0, None).unwrap(); assert_eq!(buf.as_slice(), PATTERN.as_slice()); } libnbd-1.20.3/rust/tests/test_405_pread_structured.rs0000644000175000017500000000402114525371754016235 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] mod nbdkit_pattern; use nbdkit_pattern::PATTERN; #[test] fn test_pread_structured() { let nbd = libnbd::Handle::new().unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "pattern", "size=1M", ]) .unwrap(); fn f(buf: &[u8], offset: u64, s: u32, err: &mut i32) { assert_eq!(*err, 0); *err = 42; assert_eq!(buf, PATTERN.as_slice()); assert_eq!(offset, 0); assert_eq!(s, libnbd::READ_DATA); } let mut buf = [0; 512]; nbd.pread_structured( &mut buf, 0, |b, o, s, e| { f(b, o, s, e); 0 }, None, ) .unwrap(); assert_eq!(buf.as_slice(), PATTERN.as_slice()); nbd.pread_structured( &mut buf, 0, |b, o, s, e| { f(b, o, s, e); 0 }, Some(libnbd::CmdFlag::DF), ) .unwrap(); assert_eq!(buf.as_slice(), PATTERN.as_slice()); let res = nbd.pread_structured( &mut buf, 0, |b, o, s, e| { f(b, o, s, e); -1 }, Some(libnbd::CmdFlag::DF), ); assert_eq!(res.unwrap_err().errno(), Some(42)); } libnbd-1.20.3/rust/tests/test_410_pwrite.rs0000644000175000017500000000342614525371754014174 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::fs::{self, File}; #[test] fn test_pwrite() { let tmp_dir = tempfile::tempdir().unwrap(); let data_file_path = tmp_dir.path().join("pwrite_test.data"); let data_file = File::create(&data_file_path).unwrap(); data_file.set_len(512).unwrap(); drop(data_file); let nbd = libnbd::Handle::new().unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "file", data_file_path.to_str().unwrap(), ]) .unwrap(); let mut buf_1 = [0; 512]; buf_1[10] = 0x01; buf_1[510] = 0x55; buf_1[511] = 0xAA; let flags = Some(libnbd::CmdFlag::FUA); nbd.pwrite(&buf_1, 0, flags).unwrap(); let mut buf_2 = [0; 512]; nbd.pread(&mut buf_2, 0, None).unwrap(); assert_eq!(buf_1, buf_2); // Drop nbd before tmp_dir is dropped. drop(nbd); let data_file_content = fs::read(&data_file_path).unwrap(); assert_eq!(buf_1.as_slice(), data_file_content.as_slice()); } libnbd-1.20.3/rust/tests/test_460_block_status.rs0000644000175000017500000000501514525371754015360 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::env; use std::path::Path; use std::sync::Arc; use std::sync::Mutex; fn block_status_get_entries( nbd: &libnbd::Handle, count: u64, offset: u64, flags: Option, ) -> Vec { let entries = Arc::new(Mutex::new(None)); let entries_clone = entries.clone(); nbd.block_status( count, offset, move |metacontext, _, entries, err| { assert_eq!(*err, 0); if metacontext == libnbd::CONTEXT_BASE_ALLOCATION { *entries_clone.lock().unwrap() = Some(entries.to_vec()); } 0 }, flags, ) .unwrap(); Arc::try_unwrap(entries) .unwrap() .into_inner() .unwrap() .unwrap() } #[test] fn test_block_status() { let srcdir = env::var("srcdir").unwrap(); let srcdir = Path::new(&srcdir); let script_path = srcdir.join("../tests/meta-base-allocation.sh"); let script_path = script_path.to_str().unwrap(); let nbd = libnbd::Handle::new().unwrap(); nbd.add_meta_context(libnbd::CONTEXT_BASE_ALLOCATION) .unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script_path, ]) .unwrap(); assert_eq!( block_status_get_entries(&nbd, 65536, 0, None).as_slice(), &[8192, 0, 8192, 1, 16384, 3, 16384, 2, 16384, 0,] ); assert_eq!( block_status_get_entries(&nbd, 1024, 32256, None).as_slice(), &[512, 3, 16384, 2] ); assert_eq!( block_status_get_entries( &nbd, 1024, 32256, Some(libnbd::CmdFlag::REQ_ONE) ) .as_slice(), &[512, 3] ); } libnbd-1.20.3/rust/tests/test_465_block_status_64.rs0000644000175000017500000000635514525371754015706 // libnbd Rust test case // Copyright Tage Johansson // Copyright Red Hat // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use libnbd::types::NbdExtent; use std::env; use std::path::Path; use std::sync::Arc; use std::sync::Mutex; fn block_status_get_entries( nbd: &libnbd::Handle, count: u64, offset: u64, flags: Option, ) -> Vec { let entries = Arc::new(Mutex::new(None)); let entries_clone = entries.clone(); nbd.block_status_64( count, offset, move |metacontext, _, entries, err| { assert_eq!(*err, 0); if metacontext == libnbd::CONTEXT_BASE_ALLOCATION { *entries_clone.lock().unwrap() = Some(entries.to_vec()); } 0 }, flags, ) .unwrap(); Arc::try_unwrap(entries) .unwrap() .into_inner() .unwrap() .unwrap() } #[test] fn test_block_status() { let srcdir = env::var("srcdir").unwrap(); let srcdir = Path::new(&srcdir); let script_path = srcdir.join("../tests/meta-base-allocation.sh"); let script_path = script_path.to_str().unwrap(); let nbd = libnbd::Handle::new().unwrap(); nbd.add_meta_context(libnbd::CONTEXT_BASE_ALLOCATION) .unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script_path, ]) .unwrap(); assert_eq!( block_status_get_entries(&nbd, 65536, 0, None).as_slice(), &[ NbdExtent { length: 8192, flags: 0 }, NbdExtent { length: 8192, flags: 1 }, NbdExtent { length: 16384, flags: 3 }, NbdExtent { length: 16384, flags: 2 }, NbdExtent { length: 16384, flags: 0 }, ] ); assert_eq!( block_status_get_entries(&nbd, 1024, 32256, None).as_slice(), &[ NbdExtent { length: 512, flags: 3 }, NbdExtent { length: 16384, flags: 2 } ] ); assert_eq!( block_status_get_entries( &nbd, 1024, 32256, Some(libnbd::CmdFlag::REQ_ONE) ) .as_slice(), &[NbdExtent { length: 512, flags: 3 }] ); } libnbd-1.20.3/rust/tests/test_620_stats.rs0000644000175000017500000000507514525371754014025 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[test] fn test_stats() { let nbd = libnbd::Handle::new().unwrap(); // Pre-connection, stats start out at 0 assert_eq!(nbd.stats_bytes_sent(), 0); assert_eq!(nbd.stats_chunks_sent(), 0); assert_eq!(nbd.stats_bytes_received(), 0); assert_eq!(nbd.stats_chunks_received(), 0); // Connection performs handshaking, which increments stats. // The number of bytes/chunks here may grow over time as more features get // automatically negotiated, so merely check that they are non-zero. nbd.connect_command(&["nbdkit", "-s", "--exit-with-parent", "-v", "null"]) .unwrap(); let bs1 = nbd.stats_bytes_sent(); let cs1 = nbd.stats_chunks_sent(); let br1 = nbd.stats_bytes_received(); let cr1 = nbd.stats_chunks_received(); assert!(cs1 > 0); assert!(bs1 > cs1); assert!(cr1 > 0); assert!(br1 > cr1); // A flush command should be one chunk out, one chunk back (even if // structured replies are in use) nbd.flush(None).unwrap(); let bs2 = nbd.stats_bytes_sent(); let cs2 = nbd.stats_chunks_sent(); let br2 = nbd.stats_bytes_received(); let cr2 = nbd.stats_chunks_received(); assert_eq!(bs2, bs1 + 28); assert_eq!(cs2, cs1 + 1); assert_eq!(br2, br1 + 16); // assumes nbdkit uses simple reply assert_eq!(cr2, cr1 + 1); // Stats are still readable after the connection closes; we don't know if // the server sent reply bytes to our NBD_CMD_DISC, so don't insist on it. nbd.shutdown(None).unwrap(); let bs3 = nbd.stats_bytes_sent(); let cs3 = nbd.stats_chunks_sent(); let br3 = nbd.stats_bytes_received(); let cr3 = nbd.stats_chunks_received(); assert!(bs3 > bs2); assert_eq!(cs3, cs2 + 1); assert!(br3 >= br2); assert!(cr3 == cr2 || cr3 == cr2 + 1); } libnbd-1.20.3/rust/tests/test_async_100_handle.rs0000644000175000017500000000173114525371754015303 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA //! Just check that we can link with libnbd and create a handle. #![deny(warnings)] #[tokio::test] async fn test_async_nbd_handle_new() { let _ = libnbd::AsyncHandle::new().unwrap(); } libnbd-1.20.3/rust/tests/test_async_200_connect_command.rs0000644000175000017500000000201314525371754017172 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[tokio::test] async fn test_async_connect_command() { let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.connect_command(&["nbdkit", "-s", "--exit-with-parent", "-v", "null"]) .await .unwrap(); } libnbd-1.20.3/rust/tests/test_async_210_opt_abort.rs0000644000175000017500000000235214525371754016043 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[tokio::test] async fn test_opt_abort() { let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&["nbdkit", "-s", "--exit-with-parent", "-v", "null"]) .await .unwrap(); assert_eq!(nbd.get_protocol().unwrap(), b"newstyle-fixed"); assert!(nbd.get_structured_replies_negotiated().unwrap()); nbd.opt_abort().await.unwrap(); assert!(nbd.aio_is_closed()); } libnbd-1.20.3/rust/tests/test_async_220_opt_list.rs0000644000175000017500000000537414525371754015717 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::env; use std::os::unix::ffi::OsStringExt as _; use std::path::Path; use std::sync::{Arc, Mutex}; /// Test different types of connections. struct ConnTester { script_path: String, } impl ConnTester { fn new() -> Self { let srcdir = env::var("srcdir").unwrap(); let srcdir = Path::new(&srcdir); let script_path = srcdir.join("../tests/opt-list.sh"); let script_path = String::from_utf8(script_path.into_os_string().into_vec()).unwrap(); Self { script_path } } async fn connect( &self, mode: u8, expected_exports: &[&str], ) -> libnbd::SharedResult<()> { let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", &self.script_path, format!("mode={mode}").as_str(), ]) .await .unwrap(); // Collect all exports in this list. let exports = Arc::new(Mutex::new(Vec::new())); let exports_clone = exports.clone(); nbd.opt_list(move |name, _| { exports_clone .lock() .unwrap() .push(String::from_utf8(name.to_owned()).unwrap()); 0 }) .await?; let exports = Arc::try_unwrap(exports).unwrap().into_inner().unwrap(); assert_eq!(exports.len(), expected_exports.len()); for (export, &expected) in exports.iter().zip(expected_exports) { assert_eq!(export, expected); } Ok(()) } } #[tokio::test] async fn test_opt_list() { let conn_tester = ConnTester::new(); assert!(conn_tester.connect(0, &[]).await.is_err()); assert!(conn_tester.connect(1, &["a", "b"]).await.is_ok()); assert!(conn_tester.connect(2, &[]).await.is_ok()); assert!(conn_tester.connect(3, &["a"]).await.is_ok()); } libnbd-1.20.3/rust/tests/test_async_230_opt_info.rs0000644000175000017500000001065614525371754015677 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use libnbd::CONTEXT_BASE_ALLOCATION; use std::env; use std::path::Path; #[tokio::test] async fn test_opt_info() { let srcdir = env::var("srcdir").unwrap(); let srcdir = Path::new(&srcdir); let script_path = srcdir.join("../tests/opt-info.sh"); let script_path = script_path.to_str().unwrap(); let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script_path, ]) .await .unwrap(); nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); // No size, flags, or meta-contexts yet assert!(nbd.get_size().is_err()); assert!(nbd.is_read_only().is_err()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // info with no prior name gets info on "" assert!(nbd.opt_info().await.is_ok()); assert_eq!(nbd.get_size().unwrap(), 0); assert!(nbd.is_read_only().unwrap()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // changing export wipes out prior info nbd.set_export_name("b").unwrap(); assert!(nbd.get_size().is_err()); assert!(nbd.is_read_only().is_err()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // info on something not present fails nbd.set_export_name("a").unwrap(); assert!(nbd.opt_info().await.is_err()); // info for a different export, with automatic meta_context disabled nbd.set_export_name("b").unwrap(); nbd.set_request_meta_context(false).unwrap(); nbd.opt_info().await.unwrap(); // idempotent name change is no-op nbd.set_export_name("b").unwrap(); assert_eq!(nbd.get_size().unwrap(), 1); assert!(!nbd.is_read_only().unwrap()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); nbd.set_request_meta_context(true).unwrap(); // go on something not present nbd.set_export_name("a").unwrap(); assert!(nbd.opt_go().await.is_err()); assert!(nbd.get_size().is_err()); assert!(nbd.is_read_only().is_err()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // go on a valid export nbd.set_export_name("good").unwrap(); nbd.opt_go().await.unwrap(); assert_eq!(nbd.get_size().unwrap(), 4); assert!(nbd.is_read_only().unwrap()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // now info is no longer valid, but does not wipe data assert!(nbd.set_export_name("a").is_err()); assert_eq!(nbd.get_export_name().unwrap(), b"good"); assert!(nbd.opt_info().await.is_err()); assert_eq!(nbd.get_size().unwrap(), 4); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); nbd.disconnect(None).await.unwrap(); // Another connection. This time, check that SET_META triggered by opt_info // persists through nbd_opt_go with set_request_meta_context disabled. let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", &script_path, ]) .await .unwrap(); nbd.add_meta_context("x-unexpected:bogus").unwrap(); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); nbd.opt_info().await.unwrap(); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); nbd.set_request_meta_context(false).unwrap(); // Adding to the request list now won't matter nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); nbd.opt_go().await.unwrap(); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); } libnbd-1.20.3/rust/tests/test_async_240_opt_list_meta.rs0000644000175000017500000001116014525371754016715 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::sync::{Arc, Mutex}; /// A struct with information about listed meta contexts. #[derive(Debug, Clone, PartialEq, Eq)] struct CtxInfo { /// Whether the meta context "base:alloc" is listed. has_alloc: bool, /// The number of listed meta contexts. count: u32, } async fn list_meta_ctxs( nbd: &libnbd::AsyncHandle, ) -> libnbd::SharedResult { let info = Arc::new(Mutex::new(CtxInfo { has_alloc: false, count: 0, })); let info_clone = info.clone(); nbd.opt_list_meta_context(move |ctx| { let mut info = info_clone.lock().unwrap(); info.count += 1; if ctx == libnbd::CONTEXT_BASE_ALLOCATION { info.has_alloc = true; } 0 }) .await?; let info = Arc::try_unwrap(info).unwrap().into_inner().unwrap(); Ok(info) } #[tokio::test] async fn test_async_opt_list_meta() { let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .await .unwrap(); // First pass: empty query should give at least "base:allocation". let info = list_meta_ctxs(&nbd).await.unwrap(); assert!(info.count >= 1); assert!(info.has_alloc); let max = info.count; // Second pass: bogus query has no response. nbd.add_meta_context("x-nosuch:").unwrap(); assert_eq!( list_meta_ctxs(&nbd).await.unwrap(), CtxInfo { count: 0, has_alloc: false } ); // Third pass: specific query should have one match. nbd.add_meta_context("base:allocation").unwrap(); assert_eq!(nbd.get_nr_meta_contexts().unwrap(), 2); assert_eq!(nbd.get_meta_context(1).unwrap(), b"base:allocation"); assert_eq!( list_meta_ctxs(&nbd).await.unwrap(), CtxInfo { count: 1, has_alloc: true } ); // Fourth pass: opt_list_meta_context is stateless, so it should // not wipe status learned during opt_info assert!(nbd.can_meta_context("base:allocation").is_err()); assert!(nbd.get_size().is_err()); nbd.opt_info().await.unwrap(); assert_eq!(nbd.get_size().unwrap(), 1048576); assert!(nbd.can_meta_context("base:allocation").unwrap()); nbd.clear_meta_contexts().unwrap(); nbd.add_meta_context("x-nosuch:").unwrap(); assert_eq!( list_meta_ctxs(&nbd).await.unwrap(), CtxInfo { count: 0, has_alloc: false } ); assert_eq!(nbd.get_size().unwrap(), 1048576); assert!(nbd.can_meta_context("base:allocation").unwrap()); // Final pass: "base:" query should get at least "base:allocation" nbd.add_meta_context("base:").unwrap(); let info = list_meta_ctxs(&nbd).await.unwrap(); assert!(info.count >= 1); assert!(info.count <= max); assert!(info.has_alloc); // Repeat but this time without structured replies. Deal gracefully // with older servers that don't allow the attempt. let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.set_request_structured_replies(false).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .await .unwrap(); let bytes = nbd.stats_bytes_sent(); if let Ok(info) = list_meta_ctxs(&nbd).await { assert!(info.count >= 1); assert!(info.has_alloc) } else { assert!(nbd.stats_bytes_sent() > bytes); // ignoring failure from old server } // Now enable structured replies, and a retry should pass. nbd.opt_structured_reply().await.unwrap(); let info = list_meta_ctxs(&nbd).await.unwrap(); assert!(info.count >= 1); assert!(info.has_alloc); } libnbd-1.20.3/rust/tests/test_async_245_opt_list_meta_queries.rs0000644000175000017500000000535314525371754020466 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::sync::{Arc, Mutex}; /// A struct with information about listed meta contexts. #[derive(Debug, Clone, PartialEq, Eq)] struct CtxInfo { /// Whether the meta context "base:allocation" is listed. has_alloc: bool, /// The number of listed meta contexts. count: u32, } async fn list_meta_ctxs( nbd: &libnbd::AsyncHandle, queries: &[&[u8]], ) -> libnbd::SharedResult { let info = Arc::new(Mutex::new(CtxInfo { has_alloc: false, count: 0, })); let info_clone = info.clone(); nbd.opt_list_meta_context_queries(queries, move |ctx| { let mut info = info_clone.lock().unwrap(); info.count += 1; if ctx == libnbd::CONTEXT_BASE_ALLOCATION { info.has_alloc = true; } 0 }) .await?; let info = Arc::try_unwrap(info).unwrap().into_inner().unwrap(); Ok(info) } #[tokio::test] async fn test_async_opt_list_meta_queries() { let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .await .unwrap(); // First pass: empty query should give at least "base:allocation". nbd.add_meta_context("x-nosuch:").unwrap(); let info = list_meta_ctxs(&nbd, &[]).await.unwrap(); assert!(info.count >= 1); assert!(info.has_alloc); // Second pass: bogus query has no response. nbd.clear_meta_contexts().unwrap(); assert_eq!( list_meta_ctxs(&nbd, &[b"x-nosuch:"]).await.unwrap(), CtxInfo { count: 0, has_alloc: false } ); // Third pass: specific query should have one match. assert_eq!( list_meta_ctxs(&nbd, &[b"x-nosuch:", libnbd::CONTEXT_BASE_ALLOCATION]) .await .unwrap(), CtxInfo { count: 1, has_alloc: true } ); } libnbd-1.20.3/rust/tests/test_async_250_opt_set_meta.rs0000644000175000017500000001017014525371754016536 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use libnbd::CONTEXT_BASE_ALLOCATION; use std::sync::{Arc, Mutex}; /// A struct with information about set meta contexts. #[derive(Debug, Clone, PartialEq, Eq)] struct CtxInfo { /// Whether the meta context "base:allocation" is set. has_alloc: bool, /// The number of set meta contexts. count: u32, } async fn set_meta_ctxs( nbd: &libnbd::AsyncHandle, ) -> libnbd::SharedResult { let info = Arc::new(Mutex::new(CtxInfo { has_alloc: false, count: 0, })); let info_clone = info.clone(); nbd.opt_set_meta_context(move |ctx| { let mut info = info_clone.lock().unwrap(); info.count += 1; if ctx == CONTEXT_BASE_ALLOCATION { info.has_alloc = true; } 0 }) .await?; let info = Arc::try_unwrap(info).unwrap().into_inner().unwrap(); Ok(info) } #[tokio::test] async fn test_async_opt_set_meta() { let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.set_request_structured_replies(false).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .await .unwrap(); // No contexts negotiated yet; can_meta should be error if any requested assert!(!nbd.get_structured_replies_negotiated().unwrap()); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // SET cannot succeed until SR is negotiated. nbd.opt_structured_reply().await.unwrap(); assert!(nbd.get_structured_replies_negotiated().unwrap()); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).is_err()); // nbdkit does not match wildcard for SET, even though it does for LIST nbd.clear_meta_contexts().unwrap(); nbd.add_meta_context("base:").unwrap(); assert_eq!( set_meta_ctxs(&nbd).await.unwrap(), CtxInfo { count: 0, has_alloc: false } ); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Negotiating with no contexts is not an error, but selects nothing nbd.clear_meta_contexts().unwrap(); assert_eq!( set_meta_ctxs(&nbd).await.unwrap(), CtxInfo { count: 0, has_alloc: false } ); // Request 2 with expectation of 1; with set_request_meta_context off nbd.add_meta_context("x-nosuch:context").unwrap(); nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); nbd.set_request_meta_context(false).unwrap(); assert_eq!( set_meta_ctxs(&nbd).await.unwrap(), CtxInfo { count: 1, has_alloc: true } ); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Transition to transmission phase; our last set should remain active nbd.clear_meta_contexts().unwrap(); nbd.add_meta_context("x-nosuch:context").unwrap(); nbd.opt_go().await.unwrap(); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Now too late to set; but should not lose earlier state assert!(set_meta_ctxs(&nbd).await.is_err()); assert_eq!(nbd.get_size().unwrap(), 1048576); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); } libnbd-1.20.3/rust/tests/test_async_255_opt_set_meta_queries.rs0000644000175000017500000000653214525371754020307 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use libnbd::CONTEXT_BASE_ALLOCATION; use std::sync::{Arc, Mutex}; /// A struct with information about set meta contexts. #[derive(Debug, Clone, PartialEq, Eq)] struct CtxInfo { /// Whether the meta context "base:allocation" is set. has_alloc: bool, /// The number of set meta contexts. count: u32, } async fn set_meta_ctxs_queries( nbd: &libnbd::AsyncHandle, queries: &[impl AsRef<[u8]>], ) -> libnbd::SharedResult { let info = Arc::new(Mutex::new(CtxInfo { has_alloc: false, count: 0, })); let info_clone = info.clone(); nbd.opt_set_meta_context_queries(queries, move |ctx| { let mut info = info_clone.lock().unwrap(); info.count += 1; if ctx == CONTEXT_BASE_ALLOCATION { info.has_alloc = true; } 0 }) .await?; let info = Arc::try_unwrap(info).unwrap().into_inner().unwrap(); Ok(info) } #[tokio::test] async fn test_async_opt_set_meta_queries() { let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.set_opt_mode(true).unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "memory", "size=1M", ]) .await .unwrap(); // nbdkit does not match wildcard for SET, even though it does for LIST assert_eq!( set_meta_ctxs_queries(&nbd, &["base:"]).await.unwrap(), CtxInfo { count: 0, has_alloc: false } ); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Negotiating with no contexts is not an error, but selects nothing // An explicit empty list overrides a non-empty implicit list. nbd.add_meta_context(CONTEXT_BASE_ALLOCATION).unwrap(); assert_eq!( set_meta_ctxs_queries(&nbd, &[] as &[&str]).await.unwrap(), CtxInfo { count: 0, has_alloc: false } ); assert!(!nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Request 2 with expectation of 1. assert_eq!( set_meta_ctxs_queries( &nbd, &[b"x-nosuch:context".as_slice(), CONTEXT_BASE_ALLOCATION] ) .await .unwrap(), CtxInfo { count: 1, has_alloc: true } ); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); // Transition to transmission phase; our last set should remain active nbd.set_request_meta_context(false).unwrap(); nbd.opt_go().await.unwrap(); assert!(nbd.can_meta_context(CONTEXT_BASE_ALLOCATION).unwrap()); } libnbd-1.20.3/rust/tests/test_async_400_pread.rs0000644000175000017500000000236214525371754015147 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] mod nbdkit_pattern; use nbdkit_pattern::PATTERN; #[tokio::test] async fn test_async_pread() { let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "pattern", "size=1M", ]) .await .unwrap(); let mut buf = [0; 512]; nbd.pread(&mut buf, 0, None).await.unwrap(); assert_eq!(buf.as_slice(), PATTERN.as_slice()); } libnbd-1.20.3/rust/tests/test_async_405_pread_structured.rs0000644000175000017500000000420214525371754017433 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] mod nbdkit_pattern; use nbdkit_pattern::PATTERN; #[tokio::test] async fn test_async_pread_structured() { let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "pattern", "size=1M", ]) .await .unwrap(); fn f(buf: &[u8], offset: u64, s: u32, err: &mut i32) { assert_eq!(*err, 0); *err = 42; assert_eq!(buf, PATTERN.as_slice()); assert_eq!(offset, 0); assert_eq!(s, libnbd::READ_DATA); } let mut buf = [0; 512]; nbd.pread_structured( &mut buf, 0, |b, o, s, e| { f(b, o, s, e); 0 }, None, ) .await .unwrap(); assert_eq!(buf.as_slice(), PATTERN.as_slice()); nbd.pread_structured( &mut buf, 0, |b, o, s, e| { f(b, o, s, e); 0 }, Some(libnbd::CmdFlag::DF), ) .await .unwrap(); assert_eq!(buf.as_slice(), PATTERN.as_slice()); let res = nbd .pread_structured( &mut buf, 0, |b, o, s, e| { f(b, o, s, e); -1 }, Some(libnbd::CmdFlag::DF), ) .await; assert_eq!(res.unwrap_err().errno(), Some(42)); } libnbd-1.20.3/rust/tests/test_async_410_pwrite.rs0000644000175000017500000000350514525371754015367 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::fs::{self, File}; #[tokio::test] async fn test_async_pwrite() { let tmp_dir = tempfile::tempdir().unwrap(); let data_file_path = tmp_dir.path().join("pwrite_test.data"); let data_file = File::create(&data_file_path).unwrap(); data_file.set_len(512).unwrap(); drop(data_file); let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "file", data_file_path.to_str().unwrap(), ]) .await .unwrap(); let mut buf_1 = [0; 512]; buf_1[10] = 0x01; buf_1[510] = 0x55; buf_1[511] = 0xAA; let flags = Some(libnbd::CmdFlag::FUA); nbd.pwrite(&buf_1, 0, flags).await.unwrap(); let mut buf_2 = [0; 512]; nbd.pread(&mut buf_2, 0, None).await.unwrap(); assert_eq!(buf_1, buf_2); // Drop nbd before tmp_dir is dropped. drop(nbd); let data_file_content = fs::read(&data_file_path).unwrap(); assert_eq!(buf_1.as_slice(), data_file_content.as_slice()); } libnbd-1.20.3/rust/tests/test_async_460_block_status.rs0000644000175000017500000000521014525371754016552 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use std::env; use std::path::Path; use std::sync::{Arc, Mutex}; async fn block_status_get_entries( nbd: &libnbd::AsyncHandle, count: u64, offset: u64, flags: Option, ) -> Vec { let entries = Arc::new(Mutex::new(None)); let entries_clone = entries.clone(); nbd.block_status( count, offset, move |metacontext, _, entries, err| { assert_eq!(*err, 0); if metacontext == libnbd::CONTEXT_BASE_ALLOCATION { *entries_clone.lock().unwrap() = Some(entries.to_vec()); } 0 }, flags, ) .await .unwrap(); Arc::try_unwrap(entries) .unwrap() .into_inner() .unwrap() .unwrap() } #[tokio::test] async fn test_async_block_status() { let srcdir = env::var("srcdir").unwrap(); let srcdir = Path::new(&srcdir); let script_path = srcdir.join("../tests/meta-base-allocation.sh"); let script_path = script_path.to_str().unwrap(); let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.add_meta_context(libnbd::CONTEXT_BASE_ALLOCATION) .unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script_path, ]) .await .unwrap(); assert_eq!( block_status_get_entries(&nbd, 65536, 0, None) .await .as_slice(), &[8192, 0, 8192, 1, 16384, 3, 16384, 2, 16384, 0,] ); assert_eq!( block_status_get_entries(&nbd, 1024, 32256, None) .await .as_slice(), &[512, 3, 16384, 2] ); assert_eq!( block_status_get_entries( &nbd, 1024, 32256, Some(libnbd::CmdFlag::REQ_ONE) ) .await .as_slice(), &[512, 3] ); } libnbd-1.20.3/rust/tests/test_async_465_block_status_64.rs0000644000175000017500000000655014525371754017100 // libnbd Rust test case // Copyright Tage Johansson // Copyright Red Hat // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] use libnbd::types::NbdExtent; use std::env; use std::path::Path; use std::sync::{Arc, Mutex}; async fn block_status_get_entries( nbd: &libnbd::AsyncHandle, count: u64, offset: u64, flags: Option, ) -> Vec { let entries = Arc::new(Mutex::new(None)); let entries_clone = entries.clone(); nbd.block_status_64( count, offset, move |metacontext, _, entries, err| { assert_eq!(*err, 0); if metacontext == libnbd::CONTEXT_BASE_ALLOCATION { *entries_clone.lock().unwrap() = Some(entries.to_vec()); } 0 }, flags, ) .await .unwrap(); Arc::try_unwrap(entries) .unwrap() .into_inner() .unwrap() .unwrap() } #[tokio::test] async fn test_async_block_status() { let srcdir = env::var("srcdir").unwrap(); let srcdir = Path::new(&srcdir); let script_path = srcdir.join("../tests/meta-base-allocation.sh"); let script_path = script_path.to_str().unwrap(); let nbd = libnbd::AsyncHandle::new().unwrap(); nbd.add_meta_context(libnbd::CONTEXT_BASE_ALLOCATION) .unwrap(); nbd.connect_command(&[ "nbdkit", "-s", "--exit-with-parent", "-v", "sh", script_path, ]) .await .unwrap(); assert_eq!( block_status_get_entries(&nbd, 65536, 0, None) .await .as_slice(), &[ NbdExtent { length: 8192, flags: 0 }, NbdExtent { length: 8192, flags: 1 }, NbdExtent { length: 16384, flags: 3 }, NbdExtent { length: 16384, flags: 2 }, NbdExtent { length: 16384, flags: 0 }, ] ); assert_eq!( block_status_get_entries(&nbd, 1024, 32256, None) .await .as_slice(), &[ NbdExtent { length: 512, flags: 3 }, NbdExtent { length: 16384, flags: 2 } ] ); assert_eq!( block_status_get_entries( &nbd, 1024, 32256, Some(libnbd::CmdFlag::REQ_ONE) ) .await .as_slice(), &[NbdExtent { length: 512, flags: 3 }] ); } libnbd-1.20.3/rust/tests/test_async_620_stats.rs0000644000175000017500000000516214525371754015217 // libnbd Rust test case // Copyright Tage Johansson // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA #![deny(warnings)] #[tokio::test] async fn test_async_stats() { let nbd = libnbd::AsyncHandle::new().unwrap(); // Pre-connection, stats start out at 0 assert_eq!(nbd.stats_bytes_sent(), 0); assert_eq!(nbd.stats_chunks_sent(), 0); assert_eq!(nbd.stats_bytes_received(), 0); assert_eq!(nbd.stats_chunks_received(), 0); // Connection performs handshaking, which increments stats. // The number of bytes/chunks here may grow over time as more features get // automatically negotiated, so merely check that they are non-zero. nbd.connect_command(&["nbdkit", "-s", "--exit-with-parent", "-v", "null"]) .await .unwrap(); let bs1 = nbd.stats_bytes_sent(); let cs1 = nbd.stats_chunks_sent(); let br1 = nbd.stats_bytes_received(); let cr1 = nbd.stats_chunks_received(); assert!(cs1 > 0); assert!(bs1 > cs1); assert!(cr1 > 0); assert!(br1 > cr1); // A flush command should be one chunk out, one chunk back (even if // structured replies are in use) nbd.flush(None).await.unwrap(); let bs2 = nbd.stats_bytes_sent(); let cs2 = nbd.stats_chunks_sent(); let br2 = nbd.stats_bytes_received(); let cr2 = nbd.stats_chunks_received(); assert_eq!(bs2, bs1 + 28); assert_eq!(cs2, cs1 + 1); assert_eq!(br2, br1 + 16); // assumes nbdkit uses simple reply assert_eq!(cr2, cr1 + 1); // Stats are still readable after the connection closes; we don't know if // the server sent reply bytes to our NBD_CMD_DISC, so don't insist on it. nbd.disconnect(None).await.unwrap(); let bs3 = nbd.stats_bytes_sent(); let cs3 = nbd.stats_chunks_sent(); let br3 = nbd.stats_bytes_received(); let cr3 = nbd.stats_chunks_received(); assert!(bs3 > bs2); assert_eq!(cs3, cs2 + 1); assert!(br3 >= br2); assert!(cr3 == cr2 || cr3 == cr2 + 1); } libnbd-1.20.3/rust/Makefile.am0000644000175000017500000000764014525371754011565 # nbd client library in userspace # Copyright Tage Johansson # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk generator_built = \ libnbd-sys/src/generated.rs \ src/async_bindings.rs \ src/bindings.rs \ $(NULL) source_files = \ $(generator_built) \ Cargo.toml \ src/lib.rs \ src/error.rs \ src/handle.rs \ src/types.rs \ src/utils.rs \ src/async_handle.rs \ examples/concurrent-read-write.rs \ examples/connect-command.rs \ examples/get-size.rs \ examples/fetch-first-sector.rs \ libnbd-sys/Cargo.toml \ libnbd-sys/build.rs \ libnbd-sys/src/lib.rs \ cargo_test/Cargo.toml \ cargo_test/src/lib.rs \ cargo_test/README.md \ tests/nbdkit_pattern/mod.rs \ tests/test_100_handle.rs \ tests/test_110_defaults.rs \ tests/test_120_set_non_defaults.rs \ tests/test_130_private_data.rs \ tests/test_140_explicit_close.rs \ tests/test_200_connect_command.rs \ tests/test_210_opt_abort.rs \ tests/test_220_opt_list.rs \ tests/test_230_opt_info.rs \ tests/test_240_opt_list_meta.rs \ tests/test_245_opt_list_meta_queries.rs \ tests/test_250_opt_set_meta.rs \ tests/test_255_opt_set_meta_queries.rs \ tests/test_300_get_size.rs \ tests/test_400_pread.rs \ tests/test_405_pread_structured.rs \ tests/test_410_pwrite.rs \ tests/test_460_block_status.rs \ tests/test_465_block_status_64.rs \ tests/test_620_stats.rs \ tests/test_async_100_handle.rs \ tests/test_async_200_connect_command.rs \ tests/test_async_210_opt_abort.rs \ tests/test_async_220_opt_list.rs \ tests/test_async_230_opt_info.rs \ tests/test_async_240_opt_list_meta.rs \ tests/test_async_245_opt_list_meta_queries.rs \ tests/test_async_250_opt_set_meta.rs \ tests/test_async_255_opt_set_meta_queries.rs \ tests/test_async_400_pread.rs \ tests/test_async_405_pread_structured.rs \ tests/test_async_410_pwrite.rs \ tests/test_async_460_block_status.rs \ tests/test_async_465_block_status_64.rs \ tests/test_async_620_stats.rs \ tests/test_log/mod.rs \ run-tests.sh.in \ $(NULL) EXTRA_DIST = \ $(source_files) \ libnbd-rust.pod \ $(NULL) if HAVE_RUST all-local: libnbd-sys/libnbd_version target/debug/liblibnbd.rlib \ target/doc/libnbd/index.html \ target/debug/examples/get-size libnbd-sys/libnbd_version: Makefile rm -f libnbd-sys/libnbd_version.t $(abs_top_builddir)/run echo $(VERSION) > libnbd-sys/libnbd_version.t mv libnbd-sys/libnbd_version.t libnbd-sys/libnbd_version target/debug/liblibnbd.rlib: $(source_files) $(abs_top_builddir)/run $(CARGO) build target/doc/libnbd/index.html: $(source_files) $(abs_top_builddir)/run $(CARGO) doc # This will actually build all the examples: target/debug/examples/get-size: $(source_files) $(abs_top_builddir)/run $(CARGO) build --examples if HAVE_POD man_MANS = libnbd-rust.3 CLEANFILES += $(man_MANS) libnbd-rust.3: libnbd-rust.pod $(top_builddir)/podwrapper.pl $(PODWRAPPER) --section=3 --man $@ \ --html $(top_builddir)/html/$@.html \ $< endif HAVE_POD TESTS_ENVIRONMENT = \ LIBNBD_DEBUG=1 \ $(MALLOC_CHECKS) \ CARGO=$(CARGO) \ $(NULL) LOG_COMPILER = $(top_builddir)/run TESTS = run-tests.sh check-valgrind: LIBNBD_VALGRIND=1 $(MAKE) check clean-local: $(CARGO) clean $(CARGO) clean --manifest-path cargo_test/Cargo.toml endif HAVE_RUST CLEANFILES += libnbd-sys/libnbd_version libnbd-1.20.3/rust/Makefile.in0000644000175000017500000011226014675532455011574 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Tage Johansson # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . ../tests/functions.sh set -e set -x requires @NBDKIT@ --version requires @NBDKIT@ floppy --version requires @NBDKIT@ memory --version if [ -z "$VG" ]; then @CARGO@ c --no-default-features @CARGO@ test -- --nocapture @CARGO@ run --example connect-command @NBDKIT@ -U - memory 1M \ --run '@CARGO@ run --example get-size -- $unixsocket' @NBDKIT@ -U - floppy . \ --run '@CARGO@ run --example fetch-first-sector -- $unixsocket' @NBDKIT@ -U - memory 10M \ --run '@CARGO@ run --example concurrent-read-write -- $unixsocket' else @CARGO@ test --config "target.'cfg(all())'.runner = \"$VG\"" -- --nocapture fi libnbd-1.20.3/rust/Cargo.toml0000644000175000017500000000426314525371754011457 # nbd client library in userspace # Copyright Tage Johansson # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA [workspace] [workspace.package] authors = ["Tage Johansson"] version = "0.1.0" # Make sure that the values of the edition and rust-version fields in # rust_test/Cargo.toml matches the values here. edition = "2021" rust-version = "1.69" description = "Rust bindings for libnbd, a client library for controlling block devices over a network." license = "LGPL-2.1-or-later" keywords = ["libnbd", "block-device", "network"] categories = ["api-bindings", "emulators", "virtualization"] [package] name = "libnbd" authors.workspace = true version.workspace = true edition.workspace = true rust-version.workspace = true description.workspace = true license.workspace = true keywords.workspace = true categories.workspace = true [dependencies] libnbd-sys = { path = "libnbd-sys" } bitflags = "2.3.1" errno = "0.3.1" os_socketaddr = "0.2.4" thiserror = "1.0.40" log = { version = "0.4.19", optional = true } libc = "0.2.147" tokio = { optional = true, version = "1.29.1", default-features = false, features = ["rt", "sync", "net"] } mio = { optional = true, version = "0.8.0" } [features] tokio = ["dep:tokio", "dep:mio"] default = ["log", "tokio"] [dev-dependencies] anyhow = "1.0.72" once_cell = "1.18.0" pretty-hex = "0.3.0" rand = { version = "0.8.5", default-features = false, features = ["small_rng", "min_const_gen"] } tempfile = "3.6.0" tokio = { version = "1.29.1", default-features = false, features = ["rt-multi-thread", "macros"] } libnbd-1.20.3/rust/libnbd-rust.pod0000644000175000017500000000231414525371754012453 =head1 NAME libnbd-rust - how to use libnbd from Rust =head1 SYNOPSIS let nbd = libnbd::Handle::new().unwrap(); nbd.connect_uri("nbd://localhost").unwrap(); let size = nbd.get_size().unwrap(); println!("{size} bytes"); In C add: [dependencies] libnbd = VERSION | { path = "libnbd/rust" } =head1 DESCRIPTION This manual page documents how to use libnbd to access Network Block Device (NBD) servers from the Rust programming language. The Rust bindings work very similarly to the C bindings so you should start by reading L. There is also a higher level asynchronous API using Tokio. If you build libnbd from source, the main documentation can be found in F For the ordinary interface, start by reading the documentation for C. For the higher level asynchronous API, start by reading C. C is a very low level wrapper around the libnbd API which should not be used directly. =head1 EXAMPLES This directory contains examples written in Rust: L =head1 SEE ALSO L. =head1 AUTHORS Tage Johansson =head1 COPYRIGHT Copyright Tage Johansson libnbd-1.20.3/interop/0000755000175000017500000000000014675532655010272 5libnbd-1.20.3/interop/list-exports-test-dir/0000755000175000017500000000000014675532655014500 5libnbd-1.20.3/interop/list-exports-test-dir/disk10000644000175000017500000000000014525371754015337 libnbd-1.20.3/interop/list-exports-test-dir/disk20000644000175000017500000000000014525371754015340 libnbd-1.20.3/interop/Makefile.am0000644000175000017500000003342114675532407012244 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA include $(top_srcdir)/subdir-rules.mk EXTRA_DIST = \ dirty-bitmap.sh \ interop-qemu-storage-daemon.sh \ interop-qemu-block-size.sh \ block-status-64.sh \ list-exports-nbd-config \ list-exports-test-dir/disk1 \ list-exports-test-dir/disk2 \ structured-read.sh \ opt-extended-headers.sh \ block-status-payload.sh \ strict-mode-auto-flag.sh \ $(NULL) TESTS_ENVIRONMENT = \ LIBNBD_DEBUG=1 \ $(MALLOC_CHECKS) \ $(NULL) LOG_COMPILER = $(top_builddir)/run check_PROGRAMS = TESTS = # XXX automake subdir-objects is broken, use a workaround instead. BUILT_SOURCES = requires.c requires.c: $(top_srcdir)/tests/requires.c rm -f $@ $(LN_S) $(top_srcdir)/tests/$@ $@ # Common flags. # Note there is no such thing as "AM_LDADD". AM_CPPFLAGS = \ -I$(top_srcdir)/common/include \ -I$(top_srcdir)/include \ -I$(top_srcdir)/tests \ $(NULL) AM_CFLAGS = \ $(WARNINGS_CFLAGS) \ $(GNUTLS_CFLAGS) \ $(NULL) #---------------------------------------------------------------------- # Test interoperability with nbd-server. if HAVE_NBD_SERVER check_PROGRAMS += \ interop-nbd-server \ interop-nbd-server-tls \ list-exports-nbd-server \ $(NULL) TESTS += \ interop-nbd-server \ interop-nbd-server-tls \ list-exports-nbd-server \ $(NULL) interop_nbd_server_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) # nbd-server on Alpine 3.20, 3.21 is broken. # It hangs after printing: # (process:26936): GLib-CRITICAL **: 12:35:37.011: g_thread_pool_push: assertion 'real' failed interop_nbd_server_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires_nbd_server_supports_inetd (); requires_not_exists ("/etc/alpine-release"); ' \ -DSERVER=\"$(NBD_SERVER)\" \ -DSERVER_PARAMS='"-d", "-C", "nbd-server.conf", "0", TMPFILE' \ -DEXPORT_NAME='""' \ $(NULL) interop_nbd_server_LDADD = $(top_builddir)/lib/libnbd.la interop_nbd_server_tls_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_nbd_server_tls_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -d $(abs_top_builddir)/tests/pki"); requires_nbd_server_supports_inetd (); ' \ -DSERVER=\"$(NBD_SERVER)\" \ -DSERVER_PARAMS='"-d", "-C", "nbd-server-tls.conf", "0", TMPFILE' \ -DEXPORT_NAME='""' \ -DCERTS='"../tests/pki"' \ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ $(NULL) interop_nbd_server_tls_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) list_exports_nbd_server_SOURCES = \ list-exports.c \ requires.c \ ../tests/requires.h \ $(NULL) list_exports_nbd_server_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires_nbd_server_supports_inetd (); ' \ -DSERVER=\"$(NBD_SERVER)\" \ -DSERVER_PARAMS='"-C", "$(srcdir)/list-exports-nbd-config", "-d", "0"' \ -DEXPORTS='"disk1", "disk2"' \ -DDESCRIPTIONS='"", ""' \ $(NULL) list_exports_nbd_server_LDADD = $(top_builddir)/lib/libnbd.la endif HAVE_NBD_SERVER #---------------------------------------------------------------------- # Test interoperability with qemu-nbd. if HAVE_QEMU_NBD check_PROGRAMS += \ interop-qemu-nbd \ interop-qemu-nbd-tls-certs \ interop-qemu-nbd-tls-psk \ list-exports-qemu-nbd \ socket-activation-qemu-nbd \ dirty-bitmap \ block-status-64 \ structured-read \ opt-extended-headers \ block-status-payload \ $(NULL) TESTS += \ interop-qemu-nbd \ interop-qemu-nbd-tls-certs \ interop-qemu-nbd-tls-psk \ list-exports-qemu-nbd \ socket-activation-qemu-nbd \ dirty-bitmap.sh \ block-status-64.sh \ structured-read.sh \ interop-qemu-block-size.sh \ opt-extended-headers.sh \ block-status-payload.sh \ strict-mode-auto-flag.sh \ $(NULL) interop_qemu_nbd_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_qemu_nbd_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DSOCKET_ACTIVATION=1 \ -DSERVER=\"$(QEMU_NBD)\" \ -DSERVER_PARAMS='"-f", "raw", "-x", "/", TMPFILE' \ -DEXPORT_NAME='"/"' \ $(NULL) interop_qemu_nbd_LDADD = $(top_builddir)/lib/libnbd.la # qemu-nbd requires absolute path to dir interop_qemu_nbd_tls_certs_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_qemu_nbd_tls_certs_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -d $(abs_top_builddir)/tests/pki"); requires_qemu_nbd_tls_support (); ' \ -DSOCKET_ACTIVATION=1 \ -DSERVER=\"$(QEMU_NBD)\" \ -DSERVER_PARAMS='"--object", "tls-creds-x509,id=tls0,endpoint=server,dir=$(abs_top_builddir)/tests/pki", "--tls-creds", "tls0", "-f", "raw", "-x", "/", TMPFILE' \ -DEXPORT_NAME='"/"' \ -DCERTS='"../tests/pki"' \ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ $(NULL) interop_qemu_nbd_tls_certs_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) # qemu-nbd requires absolute path to dir interop_qemu_nbd_tls_psk_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_qemu_nbd_tls_psk_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -f $(abs_top_builddir)/tests/keys.psk"); requires_qemu_nbd_tls_support (); requires_qemu_nbd_tls_psk_support (); ' \ -DSOCKET_ACTIVATION=1 \ -DSERVER=\"$(QEMU_NBD)\" \ -DSERVER_PARAMS='"--object", "tls-creds-psk,id=tls0,endpoint=server,dir=$(abs_top_builddir)/tests", "--tls-creds", "tls0", "-f", "raw", "-x", "/", TMPFILE' \ -DEXPORT_NAME='"/"' \ -DPSK='"../tests/keys.psk"' \ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ $(NULL) interop_qemu_nbd_tls_psk_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) list_exports_qemu_nbd_SOURCES = \ list-exports.c \ requires.c \ ../tests/requires.h \ $(NULL) list_exports_qemu_nbd_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DSOCKET_ACTIVATION=1 \ -DNEEDS_TMPFILE=1 \ -DSERVER=\"$(QEMU_NBD)\" \ -DSERVER_PARAMS='"-f", "raw", "-x", "testing", "-D", "data", TMPFILE' \ -DEXPORTS='"testing"' \ -DDESCRIPTIONS='"data"' \ $(NULL) list_exports_qemu_nbd_LDADD = $(top_builddir)/lib/libnbd.la socket_activation_qemu_nbd_SOURCES = socket-activation.c socket_activation_qemu_nbd_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DSERVER=\"$(QEMU_NBD)\" \ -DSERVER_PARAMS='"-f", "raw", "-x", "", tmpfile' \ $(NULL) socket_activation_qemu_nbd_LDADD = $(top_builddir)/lib/libnbd.la dirty_bitmap_SOURCES = dirty-bitmap.c dirty_bitmap_LDADD = $(top_builddir)/lib/libnbd.la block_status_64_SOURCES = block-status-64.c block_status_64_LDADD = $(top_builddir)/lib/libnbd.la structured_read_SOURCES = structured-read.c structured_read_LDADD = $(top_builddir)/lib/libnbd.la opt_extended_headers_SOURCES = opt-extended-headers.c opt_extended_headers_LDADD = $(top_builddir)/lib/libnbd.la block_status_payload_SOURCES = block-status-payload.c block_status_payload_LDADD = $(top_builddir)/lib/libnbd.la endif HAVE_QEMU_NBD #---------------------------------------------------------------------- # Test interoperability with qemu-storage-daemon. # # We treat qemu-storage-daemon as effectively the same as qemu-nbd # (above) since they use the same code. But there is a single test to # make sure we can use it. if HAVE_QEMU_STORAGE_DAEMON # It was too complicated to extend interop.c to support q-s-d (since # it doesn't support stdin/stdio or systemd socket activation) so use # this shell script instead. TESTS += interop-qemu-storage-daemon.sh endif HAVE_QEMU_STORAGE_DAEMON #---------------------------------------------------------------------- # Test interoperability with nbdkit. if HAVE_NBDKIT check_PROGRAMS += \ interop-nbdkit \ interop-nbdkit-tls-certs \ interop-nbdkit-tls-certs-allow-enabled \ interop-nbdkit-tls-certs-allow-fallback \ interop-nbdkit-tls-certs-bad-CA \ interop-nbdkit-tls-psk \ interop-nbdkit-tls-psk-allow-enabled \ interop-nbdkit-tls-psk-allow-fallback \ socket-activation-nbdkit \ list-exports-nbdkit \ $(NULL) TESTS += \ interop-nbdkit \ interop-nbdkit-tls-certs \ interop-nbdkit-tls-certs-allow-enabled \ interop-nbdkit-tls-certs-allow-fallback \ interop-nbdkit-tls-certs-bad-CA \ interop-nbdkit-tls-psk \ interop-nbdkit-tls-psk-allow-enabled \ interop-nbdkit-tls-psk-allow-fallback \ socket-activation-nbdkit \ list-exports-nbdkit \ $(NULL) interop_nbdkit_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_nbdkit_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"-s", "--exit-with-parent", "file", TMPFILE' \ $(NULL) interop_nbdkit_LDADD = $(top_builddir)/lib/libnbd.la interop_nbdkit_tls_certs_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_nbdkit_tls_certs_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -d ../tests/pki"); ' \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"--tls=require", "--tls-certificates=../tests/pki", "-s", "--exit-with-parent", "file", TMPFILE' \ -DCERTS='"../tests/pki"' \ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ $(NULL) interop_nbdkit_tls_certs_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) interop_nbdkit_tls_certs_allow_enabled_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_nbdkit_tls_certs_allow_enabled_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -d ../tests/pki"); ' \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"--tls=require", "--tls-certificates=../tests/pki", "-s", "--exit-with-parent", "file", TMPFILE' \ -DCERTS='"../tests/pki"' \ -DTLS_MODE=LIBNBD_TLS_ALLOW \ $(NULL) interop_nbdkit_tls_certs_allow_enabled_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) interop_nbdkit_tls_certs_allow_fallback_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_nbdkit_tls_certs_allow_fallback_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -d ../tests/pki"); ' \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"--tls=off", "-s", "--exit-with-parent", "file", TMPFILE' \ -DCERTS='"../tests/pki"' \ -DTLS_MODE=LIBNBD_TLS_ALLOW \ -DTLS_FALLBACK=1 \ $(NULL) interop_nbdkit_tls_certs_allow_fallback_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) # In this test, nbdkit offers a server certificate signed by our CA in # the tests/pki directory, but we deliberately tell libnbd to test # against the system CA (-DCERTS=NULL). This is expected to fail the # connection with the error: # libnbd: debug: nbd1: nbd_connect_command: handle dead: nbd_connect_command: gnutls_handshake: Error in the certificate verification. (15/1) interop_nbdkit_tls_certs_bad_CA_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_nbdkit_tls_certs_bad_CA_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -d ../tests/pki"); ' \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"--tls=require", "--tls-certificates=../tests/pki", "-s", "--exit-with-parent", "null"' \ -DCERTS=NULL \ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ -DEXPECT_FAIL=1 \ $(NULL) interop_nbdkit_tls_certs_bad_CA_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) interop_nbdkit_tls_psk_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_nbdkit_tls_psk_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -f ../tests/keys.psk"); ' \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"--tls=require", "--tls-psk=../tests/keys.psk", "-s", "--exit-with-parent", "file", TMPFILE' \ -DPSK='"../tests/keys.psk"' \ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ $(NULL) interop_nbdkit_tls_psk_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) interop_nbdkit_tls_psk_allow_enabled_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_nbdkit_tls_psk_allow_enabled_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -f ../tests/keys.psk"); ' \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"--tls=require", "--tls-psk=../tests/keys.psk", "-s", "--exit-with-parent", "file", TMPFILE' \ -DPSK='"../tests/keys.psk"' \ -DTLS_MODE=LIBNBD_TLS_ALLOW \ $(NULL) interop_nbdkit_tls_psk_allow_enabled_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) interop_nbdkit_tls_psk_allow_fallback_SOURCES = \ interop.c \ requires.c \ ../tests/requires.h \ $(NULL) interop_nbdkit_tls_psk_allow_fallback_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("test -f ../tests/keys.psk"); ' \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"--tls=off", "-s", "--exit-with-parent", "file", TMPFILE' \ -DPSK='"../tests/keys.psk"' \ -DTLS_MODE=LIBNBD_TLS_ALLOW \ -DTLS_FALLBACK=1 \ $(NULL) interop_nbdkit_tls_psk_allow_fallback_LDADD = \ $(top_builddir)/lib/libnbd.la \ $(GNUTLS_LIBS) \ $(NULL) socket_activation_nbdkit_SOURCES = socket-activation.c socket_activation_nbdkit_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"file", tmpfile' \ $(NULL) socket_activation_nbdkit_LDADD = $(top_builddir)/lib/libnbd.la # This test requires nbdkit >= 1.22, checked at runtime. list_exports_nbdkit_SOURCES = \ list-exports.c \ requires.c \ ../tests/requires.h \ $(NULL) list_exports_nbdkit_CPPFLAGS = \ $(AM_CPPFLAGS) \ -DREQUIRES=' requires ("$(NBDKIT) file --version"); requires ("minor=`$(NBDKIT) --dump-config | grep ^version_minor | cut -d= -f2`; echo $$minor; test $$minor -ge 22"); ' \ -DSERVER=\"$(NBDKIT)\" \ -DSERVER_PARAMS='"-s", "--exit-with-parent", "file", "dir=$(srcdir)/list-exports-test-dir"' \ -DEXPORTS='"disk1", "disk2"' \ -DDESCRIPTIONS='"", ""' \ $(NULL) list_exports_nbdkit_LDADD = $(top_builddir)/lib/libnbd.la endif HAVE_NBDKIT check-valgrind: LIBNBD_VALGRIND=1 $(MAKE) check libnbd-1.20.3/interop/Makefile.in0000644000175000017500000052443114675532455012266 # Makefile.in generated by automake 1.16.5 from Makefile.am. # @configure_input@ # Copyright (C) 1994-2021 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # subdir-rules.mk is included only in subdirectories. # common-rules.mk is included in every Makefile.am. # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # common-rules.mk is included in every Makefile.am. # subdir-rules.mk is included only in subdirectories. 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requires_nbd_server_supports_inetd (); ' \ @HAVE_NBD_SERVER_TRUE@ -DSERVER=\"$(NBD_SERVER)\" \ @HAVE_NBD_SERVER_TRUE@ -DSERVER_PARAMS='"-d", "-C", "nbd-server-tls.conf", "0", TMPFILE' \ @HAVE_NBD_SERVER_TRUE@ -DEXPORT_NAME='""' \ @HAVE_NBD_SERVER_TRUE@ -DCERTS='"../tests/pki"' \ @HAVE_NBD_SERVER_TRUE@ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ @HAVE_NBD_SERVER_TRUE@ $(NULL) @HAVE_NBD_SERVER_TRUE@interop_nbd_server_tls_LDADD = \ @HAVE_NBD_SERVER_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBD_SERVER_TRUE@ $(GNUTLS_LIBS) \ @HAVE_NBD_SERVER_TRUE@ $(NULL) @HAVE_NBD_SERVER_TRUE@list_exports_nbd_server_SOURCES = \ @HAVE_NBD_SERVER_TRUE@ list-exports.c \ @HAVE_NBD_SERVER_TRUE@ requires.c \ @HAVE_NBD_SERVER_TRUE@ ../tests/requires.h \ @HAVE_NBD_SERVER_TRUE@ $(NULL) @HAVE_NBD_SERVER_TRUE@list_exports_nbd_server_CPPFLAGS = \ @HAVE_NBD_SERVER_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBD_SERVER_TRUE@ -DREQUIRES=' requires_nbd_server_supports_inetd (); ' \ @HAVE_NBD_SERVER_TRUE@ -DSERVER=\"$(NBD_SERVER)\" \ @HAVE_NBD_SERVER_TRUE@ -DSERVER_PARAMS='"-C", "$(srcdir)/list-exports-nbd-config", "-d", "0"' \ @HAVE_NBD_SERVER_TRUE@ -DEXPORTS='"disk1", "disk2"' \ @HAVE_NBD_SERVER_TRUE@ -DDESCRIPTIONS='"", ""' \ @HAVE_NBD_SERVER_TRUE@ $(NULL) @HAVE_NBD_SERVER_TRUE@list_exports_nbd_server_LDADD = $(top_builddir)/lib/libnbd.la @HAVE_QEMU_NBD_TRUE@interop_qemu_nbd_SOURCES = \ @HAVE_QEMU_NBD_TRUE@ interop.c \ @HAVE_QEMU_NBD_TRUE@ requires.c \ @HAVE_QEMU_NBD_TRUE@ ../tests/requires.h \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@interop_qemu_nbd_CPPFLAGS = \ @HAVE_QEMU_NBD_TRUE@ $(AM_CPPFLAGS) \ @HAVE_QEMU_NBD_TRUE@ -DSOCKET_ACTIVATION=1 \ @HAVE_QEMU_NBD_TRUE@ -DSERVER=\"$(QEMU_NBD)\" \ @HAVE_QEMU_NBD_TRUE@ -DSERVER_PARAMS='"-f", "raw", "-x", "/", TMPFILE' \ @HAVE_QEMU_NBD_TRUE@ -DEXPORT_NAME='"/"' \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@interop_qemu_nbd_LDADD = $(top_builddir)/lib/libnbd.la # qemu-nbd requires absolute path to dir @HAVE_QEMU_NBD_TRUE@interop_qemu_nbd_tls_certs_SOURCES = \ @HAVE_QEMU_NBD_TRUE@ interop.c \ @HAVE_QEMU_NBD_TRUE@ requires.c \ @HAVE_QEMU_NBD_TRUE@ ../tests/requires.h \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@interop_qemu_nbd_tls_certs_CPPFLAGS = \ @HAVE_QEMU_NBD_TRUE@ $(AM_CPPFLAGS) \ @HAVE_QEMU_NBD_TRUE@ -DREQUIRES=' requires ("test -d $(abs_top_builddir)/tests/pki"); requires_qemu_nbd_tls_support (); ' \ @HAVE_QEMU_NBD_TRUE@ -DSOCKET_ACTIVATION=1 \ @HAVE_QEMU_NBD_TRUE@ -DSERVER=\"$(QEMU_NBD)\" \ @HAVE_QEMU_NBD_TRUE@ -DSERVER_PARAMS='"--object", "tls-creds-x509,id=tls0,endpoint=server,dir=$(abs_top_builddir)/tests/pki", "--tls-creds", "tls0", "-f", "raw", "-x", "/", TMPFILE' \ @HAVE_QEMU_NBD_TRUE@ -DEXPORT_NAME='"/"' \ @HAVE_QEMU_NBD_TRUE@ -DCERTS='"../tests/pki"' \ @HAVE_QEMU_NBD_TRUE@ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@interop_qemu_nbd_tls_certs_LDADD = \ @HAVE_QEMU_NBD_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_QEMU_NBD_TRUE@ $(GNUTLS_LIBS) \ @HAVE_QEMU_NBD_TRUE@ $(NULL) # qemu-nbd requires absolute path to dir @HAVE_QEMU_NBD_TRUE@interop_qemu_nbd_tls_psk_SOURCES = \ @HAVE_QEMU_NBD_TRUE@ interop.c \ @HAVE_QEMU_NBD_TRUE@ requires.c \ @HAVE_QEMU_NBD_TRUE@ ../tests/requires.h \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@interop_qemu_nbd_tls_psk_CPPFLAGS = \ @HAVE_QEMU_NBD_TRUE@ $(AM_CPPFLAGS) \ @HAVE_QEMU_NBD_TRUE@ -DREQUIRES=' requires ("test -f $(abs_top_builddir)/tests/keys.psk"); requires_qemu_nbd_tls_support (); requires_qemu_nbd_tls_psk_support (); ' \ @HAVE_QEMU_NBD_TRUE@ -DSOCKET_ACTIVATION=1 \ @HAVE_QEMU_NBD_TRUE@ -DSERVER=\"$(QEMU_NBD)\" \ @HAVE_QEMU_NBD_TRUE@ -DSERVER_PARAMS='"--object", "tls-creds-psk,id=tls0,endpoint=server,dir=$(abs_top_builddir)/tests", "--tls-creds", "tls0", "-f", "raw", "-x", "/", TMPFILE' \ @HAVE_QEMU_NBD_TRUE@ -DEXPORT_NAME='"/"' \ @HAVE_QEMU_NBD_TRUE@ -DPSK='"../tests/keys.psk"' \ @HAVE_QEMU_NBD_TRUE@ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@interop_qemu_nbd_tls_psk_LDADD = \ @HAVE_QEMU_NBD_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_QEMU_NBD_TRUE@ $(GNUTLS_LIBS) \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@list_exports_qemu_nbd_SOURCES = \ @HAVE_QEMU_NBD_TRUE@ list-exports.c \ @HAVE_QEMU_NBD_TRUE@ requires.c \ @HAVE_QEMU_NBD_TRUE@ ../tests/requires.h \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@list_exports_qemu_nbd_CPPFLAGS = \ @HAVE_QEMU_NBD_TRUE@ $(AM_CPPFLAGS) \ @HAVE_QEMU_NBD_TRUE@ -DSOCKET_ACTIVATION=1 \ @HAVE_QEMU_NBD_TRUE@ -DNEEDS_TMPFILE=1 \ @HAVE_QEMU_NBD_TRUE@ -DSERVER=\"$(QEMU_NBD)\" \ @HAVE_QEMU_NBD_TRUE@ -DSERVER_PARAMS='"-f", "raw", "-x", "testing", "-D", "data", TMPFILE' \ @HAVE_QEMU_NBD_TRUE@ -DEXPORTS='"testing"' \ @HAVE_QEMU_NBD_TRUE@ -DDESCRIPTIONS='"data"' \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@list_exports_qemu_nbd_LDADD = $(top_builddir)/lib/libnbd.la @HAVE_QEMU_NBD_TRUE@socket_activation_qemu_nbd_SOURCES = socket-activation.c @HAVE_QEMU_NBD_TRUE@socket_activation_qemu_nbd_CPPFLAGS = \ @HAVE_QEMU_NBD_TRUE@ $(AM_CPPFLAGS) \ @HAVE_QEMU_NBD_TRUE@ -DSERVER=\"$(QEMU_NBD)\" \ @HAVE_QEMU_NBD_TRUE@ -DSERVER_PARAMS='"-f", "raw", "-x", "", tmpfile' \ @HAVE_QEMU_NBD_TRUE@ $(NULL) @HAVE_QEMU_NBD_TRUE@socket_activation_qemu_nbd_LDADD = $(top_builddir)/lib/libnbd.la @HAVE_QEMU_NBD_TRUE@dirty_bitmap_SOURCES = dirty-bitmap.c @HAVE_QEMU_NBD_TRUE@dirty_bitmap_LDADD = $(top_builddir)/lib/libnbd.la @HAVE_QEMU_NBD_TRUE@block_status_64_SOURCES = block-status-64.c @HAVE_QEMU_NBD_TRUE@block_status_64_LDADD = $(top_builddir)/lib/libnbd.la @HAVE_QEMU_NBD_TRUE@structured_read_SOURCES = structured-read.c @HAVE_QEMU_NBD_TRUE@structured_read_LDADD = $(top_builddir)/lib/libnbd.la @HAVE_QEMU_NBD_TRUE@opt_extended_headers_SOURCES = opt-extended-headers.c @HAVE_QEMU_NBD_TRUE@opt_extended_headers_LDADD = $(top_builddir)/lib/libnbd.la @HAVE_QEMU_NBD_TRUE@block_status_payload_SOURCES = block-status-payload.c @HAVE_QEMU_NBD_TRUE@block_status_payload_LDADD = $(top_builddir)/lib/libnbd.la @HAVE_NBDKIT_TRUE@interop_nbdkit_SOURCES = \ @HAVE_NBDKIT_TRUE@ interop.c \ @HAVE_NBDKIT_TRUE@ requires.c \ @HAVE_NBDKIT_TRUE@ ../tests/requires.h \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"-s", "--exit-with-parent", "file", TMPFILE' \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_LDADD = $(top_builddir)/lib/libnbd.la @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_SOURCES = \ @HAVE_NBDKIT_TRUE@ interop.c \ @HAVE_NBDKIT_TRUE@ requires.c \ @HAVE_NBDKIT_TRUE@ ../tests/requires.h \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DREQUIRES=' requires ("test -d ../tests/pki"); ' \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"--tls=require", "--tls-certificates=../tests/pki", "-s", "--exit-with-parent", "file", TMPFILE' \ @HAVE_NBDKIT_TRUE@ -DCERTS='"../tests/pki"' \ @HAVE_NBDKIT_TRUE@ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_LDADD = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBDKIT_TRUE@ $(GNUTLS_LIBS) \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_allow_enabled_SOURCES = \ @HAVE_NBDKIT_TRUE@ interop.c \ @HAVE_NBDKIT_TRUE@ requires.c \ @HAVE_NBDKIT_TRUE@ ../tests/requires.h \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_allow_enabled_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DREQUIRES=' requires ("test -d ../tests/pki"); ' \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"--tls=require", "--tls-certificates=../tests/pki", "-s", "--exit-with-parent", "file", TMPFILE' \ @HAVE_NBDKIT_TRUE@ -DCERTS='"../tests/pki"' \ @HAVE_NBDKIT_TRUE@ -DTLS_MODE=LIBNBD_TLS_ALLOW \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_allow_enabled_LDADD = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBDKIT_TRUE@ $(GNUTLS_LIBS) \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_allow_fallback_SOURCES = \ @HAVE_NBDKIT_TRUE@ interop.c \ @HAVE_NBDKIT_TRUE@ requires.c \ @HAVE_NBDKIT_TRUE@ ../tests/requires.h \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_allow_fallback_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DREQUIRES=' requires ("test -d ../tests/pki"); ' \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"--tls=off", "-s", "--exit-with-parent", "file", TMPFILE' \ @HAVE_NBDKIT_TRUE@ -DCERTS='"../tests/pki"' \ @HAVE_NBDKIT_TRUE@ -DTLS_MODE=LIBNBD_TLS_ALLOW \ @HAVE_NBDKIT_TRUE@ -DTLS_FALLBACK=1 \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_allow_fallback_LDADD = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBDKIT_TRUE@ $(GNUTLS_LIBS) \ @HAVE_NBDKIT_TRUE@ $(NULL) # In this test, nbdkit offers a server certificate signed by our CA in # the tests/pki directory, but we deliberately tell libnbd to test # against the system CA (-DCERTS=NULL). This is expected to fail the # connection with the error: # libnbd: debug: nbd1: nbd_connect_command: handle dead: nbd_connect_command: gnutls_handshake: Error in the certificate verification. (15/1) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_bad_CA_SOURCES = \ @HAVE_NBDKIT_TRUE@ interop.c \ @HAVE_NBDKIT_TRUE@ requires.c \ @HAVE_NBDKIT_TRUE@ ../tests/requires.h \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_bad_CA_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DREQUIRES=' requires ("test -d ../tests/pki"); ' \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"--tls=require", "--tls-certificates=../tests/pki", "-s", "--exit-with-parent", "null"' \ @HAVE_NBDKIT_TRUE@ -DCERTS=NULL \ @HAVE_NBDKIT_TRUE@ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ @HAVE_NBDKIT_TRUE@ -DEXPECT_FAIL=1 \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_certs_bad_CA_LDADD = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBDKIT_TRUE@ $(GNUTLS_LIBS) \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_psk_SOURCES = \ @HAVE_NBDKIT_TRUE@ interop.c \ @HAVE_NBDKIT_TRUE@ requires.c \ @HAVE_NBDKIT_TRUE@ ../tests/requires.h \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_psk_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DREQUIRES=' requires ("test -f ../tests/keys.psk"); ' \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"--tls=require", "--tls-psk=../tests/keys.psk", "-s", "--exit-with-parent", "file", TMPFILE' \ @HAVE_NBDKIT_TRUE@ -DPSK='"../tests/keys.psk"' \ @HAVE_NBDKIT_TRUE@ -DTLS_MODE=LIBNBD_TLS_REQUIRE \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_psk_LDADD = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBDKIT_TRUE@ $(GNUTLS_LIBS) \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_psk_allow_enabled_SOURCES = \ @HAVE_NBDKIT_TRUE@ interop.c \ @HAVE_NBDKIT_TRUE@ requires.c \ @HAVE_NBDKIT_TRUE@ ../tests/requires.h \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_psk_allow_enabled_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DREQUIRES=' requires ("test -f ../tests/keys.psk"); ' \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"--tls=require", "--tls-psk=../tests/keys.psk", "-s", "--exit-with-parent", "file", TMPFILE' \ @HAVE_NBDKIT_TRUE@ -DPSK='"../tests/keys.psk"' \ @HAVE_NBDKIT_TRUE@ -DTLS_MODE=LIBNBD_TLS_ALLOW \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_psk_allow_enabled_LDADD = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBDKIT_TRUE@ $(GNUTLS_LIBS) \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_psk_allow_fallback_SOURCES = \ @HAVE_NBDKIT_TRUE@ interop.c \ @HAVE_NBDKIT_TRUE@ requires.c \ @HAVE_NBDKIT_TRUE@ ../tests/requires.h \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_psk_allow_fallback_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DREQUIRES=' requires ("test -f ../tests/keys.psk"); ' \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"--tls=off", "-s", "--exit-with-parent", "file", TMPFILE' \ @HAVE_NBDKIT_TRUE@ -DPSK='"../tests/keys.psk"' \ @HAVE_NBDKIT_TRUE@ -DTLS_MODE=LIBNBD_TLS_ALLOW \ @HAVE_NBDKIT_TRUE@ -DTLS_FALLBACK=1 \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@interop_nbdkit_tls_psk_allow_fallback_LDADD = \ @HAVE_NBDKIT_TRUE@ $(top_builddir)/lib/libnbd.la \ @HAVE_NBDKIT_TRUE@ $(GNUTLS_LIBS) \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@socket_activation_nbdkit_SOURCES = socket-activation.c @HAVE_NBDKIT_TRUE@socket_activation_nbdkit_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"file", tmpfile' \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@socket_activation_nbdkit_LDADD = $(top_builddir)/lib/libnbd.la # This test requires nbdkit >= 1.22, checked at runtime. @HAVE_NBDKIT_TRUE@list_exports_nbdkit_SOURCES = \ @HAVE_NBDKIT_TRUE@ list-exports.c \ @HAVE_NBDKIT_TRUE@ requires.c \ @HAVE_NBDKIT_TRUE@ ../tests/requires.h \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@list_exports_nbdkit_CPPFLAGS = \ @HAVE_NBDKIT_TRUE@ $(AM_CPPFLAGS) \ @HAVE_NBDKIT_TRUE@ -DREQUIRES=' requires ("$(NBDKIT) file --version"); requires ("minor=`$(NBDKIT) --dump-config | grep ^version_minor | cut -d= -f2`; echo $$minor; test $$minor -ge 22"); ' \ @HAVE_NBDKIT_TRUE@ -DSERVER=\"$(NBDKIT)\" \ @HAVE_NBDKIT_TRUE@ -DSERVER_PARAMS='"-s", "--exit-with-parent", "file", "dir=$(srcdir)/list-exports-test-dir"' \ @HAVE_NBDKIT_TRUE@ -DEXPORTS='"disk1", "disk2"' \ @HAVE_NBDKIT_TRUE@ -DDESCRIPTIONS='"", ""' \ @HAVE_NBDKIT_TRUE@ $(NULL) @HAVE_NBDKIT_TRUE@list_exports_nbdkit_LDADD = $(top_builddir)/lib/libnbd.la all: $(BUILT_SOURCES) $(MAKE) $(AM_MAKEFLAGS) all-am .SUFFIXES: .SUFFIXES: .c .lo .log .o .obj .test .test$(EXEEXT) .trs $(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(top_srcdir)/subdir-rules.mk $(top_srcdir)/common-rules.mk $(am__configure_deps) @for dep in $?; do \ case '$(am__configure_deps)' in \ *$$dep*) \ ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \ && { if test -f $@; then exit 0; else break; fi; }; \ exit 1;; \ esac; \ done; \ echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign interop/Makefile'; \ $(am__cd) $(top_srcdir) && \ $(AUTOMAKE) --foreign interop/Makefile Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status @case '$?' in \ *config.status*) \ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \ *) \ echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \ cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \ esac; $(top_srcdir)/subdir-rules.mk $(top_srcdir)/common-rules.mk $(am__empty): $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh $(top_srcdir)/configure: $(am__configure_deps) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh $(ACLOCAL_M4): $(am__aclocal_m4_deps) cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh $(am__aclocal_m4_deps): nbd-server.conf: $(top_builddir)/config.status $(srcdir)/nbd-server.conf.in cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ nbd-server-tls.conf: $(top_builddir)/config.status $(srcdir)/nbd-server-tls.conf.in cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ clean-checkPROGRAMS: @list='$(check_PROGRAMS)'; test -n "$$list" || exit 0; \ echo " rm -f" $$list; \ rm -f $$list || exit $$?; \ test -n "$(EXEEXT)" || exit 0; \ list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \ echo " rm -f" $$list; \ rm -f $$list block-status-64$(EXEEXT): $(block_status_64_OBJECTS) $(block_status_64_DEPENDENCIES) $(EXTRA_block_status_64_DEPENDENCIES) @rm -f block-status-64$(EXEEXT) $(AM_V_CCLD)$(LINK) $(block_status_64_OBJECTS) $(block_status_64_LDADD) $(LIBS) block-status-payload$(EXEEXT): $(block_status_payload_OBJECTS) $(block_status_payload_DEPENDENCIES) 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modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test 64-bit block status with qemu. */ #include #include #include #include #include #include #include #include #include #include static const char *bitmap; struct data { bool req_one; /* input: true if req_one was passed to request */ int count; /* input: count of expected remaining calls */ bool seen_base; /* output: true if base:allocation encountered */ bool seen_dirty; /* output: true if qemu:dirty-bitmap encountered */ }; static int cb32 (void *opaque, const char *metacontext, uint64_t offset, uint32_t *entries, size_t len, int *error) { struct data *data = opaque; assert (offset == 0); assert (data->count-- > 0); if (strcmp (metacontext, LIBNBD_CONTEXT_BASE_ALLOCATION) == 0) { assert (!data->seen_base); data->seen_base = true; /* Data block offset 0 size 64k, remainder is hole */ assert (len == 4); assert (entries[0] == 65536); assert (entries[1] == 0); /* libnbd had to truncate qemu's >4G answer */ assert (entries[2] == 4227858432); assert (entries[3] == (LIBNBD_STATE_HOLE|LIBNBD_STATE_ZERO)); } else if (strcmp (metacontext, bitmap) == 0) { assert (!data->seen_dirty); data->seen_dirty = true; /* Dirty block at offset 5G-64k, remainder is clean */ /* libnbd had to truncate qemu's >4G answer */ assert (len == 2); assert (entries[0] == 4227858432); assert (entries[1] == 0); } else { fprintf (stderr, "unexpected context %s\n", metacontext); exit (EXIT_FAILURE); } return 0; } static int cb64 (void *opaque, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t len, int *error) { struct data *data = opaque; assert (offset == 0); assert (data->count-- > 0); if (strcmp (metacontext, LIBNBD_CONTEXT_BASE_ALLOCATION) == 0) { assert (!data->seen_base); data->seen_base = true; /* Data block offset 0 size 64k, remainder is hole */ assert (len == 2); assert (entries[0].length == 65536); assert (entries[0].flags == 0); assert (entries[1].length == 5368643584ULL); assert (entries[1].flags == (LIBNBD_STATE_HOLE|LIBNBD_STATE_ZERO)); } else if (strcmp (metacontext, bitmap) == 0) { assert (!data->seen_dirty); data->seen_dirty = true; /* Dirty block at offset 5G-64k, remainder is clean */ assert (len == 2); assert (entries[0].length == 5368643584ULL); assert (entries[0].flags == 0); assert (entries[1].length == 65536); assert (entries[1].flags == 1); } else { fprintf (stderr, "unexpected context %s\n", metacontext); exit (EXIT_FAILURE); } return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t exportsize; struct data data; if (argc < 3) { fprintf (stderr, "%s bitmap qemu-nbd [args ...]\n", argv[0]); exit (EXIT_FAILURE); } bitmap = argv[1]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION); nbd_add_meta_context (nbd, bitmap); if (nbd_connect_systemd_socket_activation (nbd, &argv[2]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_get_extended_headers_negotiated (nbd) != 1) { fprintf (stderr, "skipping: qemu-nbd lacks extended headers\n"); nbd_close (nbd); exit (77); } /* Prove that we can round-trip a >4G block status request */ data = (struct data) { .count = 2, }; if (nbd_block_status_64 (nbd, exportsize, 0, (nbd_extent64_callback) { .callback = cb64, .user_data = &data }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (data.seen_base && data.seen_dirty); /* Check libnbd's handling of a >4G response through older interface */ data = (struct data) { .count = 2, }; if (nbd_block_status (nbd, exportsize, 0, (nbd_extent_callback) { .callback = cb32, .user_data = &data }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (data.seen_base && data.seen_dirty); if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/interop/block-status-payload.c0000644000175000017500000001660514616437241014416 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test interaction with qemu using block status payload filtering. */ #include #include #include #include #include #include #include #include #include #include #include "array-size.h" static const char *contexts[] = { "base:allocation", "qemu:allocation-depth", "qemu:dirty-bitmap:bitmap0", "qemu:dirty-bitmap:bitmap1", }; static int cb (void *opaque, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t len, int *error) { /* Adjust seen according to which context was visited */ unsigned int *seen = opaque; size_t i; for (i = 0; i < ARRAY_SIZE (contexts); i++) if (strcmp (contexts[i], metacontext) == 0) break; *seen |= 1 << i; return 0; } static char ** list (unsigned int use) { static const char *array[ARRAY_SIZE (contexts) + 1]; size_t i, j; assert (use < 1 << ARRAY_SIZE (contexts)); for (i = j = 0; i < ARRAY_SIZE (contexts); i++) if (use & (1 << i)) array[j++] = contexts[i]; array[j] = NULL; return (char **) array; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t exportsize; uint64_t bytes_sent; unsigned int seen; size_t i; int r; if (argc < 2) { fprintf (stderr, "%s qemu-nbd [args ...]\n", argv[0]); exit (EXIT_FAILURE); } nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (ARRAY_SIZE (contexts) == 4); for (i = 0; i < ARRAY_SIZE (contexts); i++) { if (nbd_add_meta_context (nbd, contexts[i]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } } if (nbd_connect_systemd_socket_activation (nbd, &argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } r = nbd_can_block_status_payload (nbd); if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (r != 1) { fprintf (stderr, "expecting block status payload support from qemu\n"); exit (EXIT_FAILURE); } exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* An unfiltered call should see all four contexts */ seen = 0; if (nbd_block_status_64 (nbd, exportsize, 0, (nbd_extent64_callback) { .callback = cb, .user_data = &seen }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (seen == 0xf); /* Filtering with all contexts listed, same effect as unfilitered call */ seen = 0; if (nbd_block_status_filter (nbd, exportsize, 0, list (0xf), (nbd_extent64_callback) { .callback = cb, .user_data = &seen }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (seen == 0xf); /* Filtering with just two out of four contexts; test optional flag */ seen = 0; if (nbd_block_status_filter (nbd, exportsize, 0, list (0x5), (nbd_extent64_callback) { .callback = cb, .user_data = &seen }, LIBNBD_CMD_FLAG_PAYLOAD_LEN) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (seen == 0x5); /* Filtering with one context, near end of file (to make sure the * payload length isn't confused with the effect length) */ seen = 0; if (nbd_block_status_filter (nbd, 1, exportsize - 1, list (0x2), (nbd_extent64_callback) { .callback = cb, .user_data = &seen }, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (seen == 0x2); /* Filtering with no contexts - pointless, so qemu rejects it */ bytes_sent = nbd_stats_bytes_sent (nbd); seen = 0; if (nbd_block_status_filter (nbd, exportsize, 0, list (0x0), (nbd_extent64_callback) { .callback = cb, .user_data = &seen }, 0) != -1) { fprintf (stderr, "expecting block status failure\n"); exit (EXIT_FAILURE); } assert (seen == 0x0); if (nbd_get_errno () != EINVAL) { fprintf (stderr, "expecting EINVAL after block status failure\n"); exit (EXIT_FAILURE); } if (nbd_stats_bytes_sent (nbd) <= bytes_sent) { fprintf (stderr, "expecting server-side rejection of bad request\n"); exit (EXIT_FAILURE); } /* Giving unknown string triggers EINVAL from libnbd */ bytes_sent = nbd_stats_bytes_sent (nbd); seen = 0; { const char *bogus[] = { "qemu:dirty-bitmap:bitmap2", NULL }; if (nbd_block_status_filter (nbd, exportsize, 0, (char **) bogus, (nbd_extent64_callback) { .callback = cb, .user_data = &seen }, 0) != -1) { fprintf (stderr, "expecting block status failure\n"); exit (EXIT_FAILURE); } } if (nbd_get_errno () != EINVAL) { fprintf (stderr, "expecting EINVAL after block status failure\n"); exit (EXIT_FAILURE); } assert (seen == 0x0); if (nbd_stats_bytes_sent (nbd) != bytes_sent) { fprintf (stderr, "expecting client-side rejection of bad request\n"); exit (EXIT_FAILURE); } /* Giving same string twice triggers EINVAL from qemu */ seen = 0; { const char *dupes[] = { "base:allocation", "base:allocation", NULL }; if (nbd_block_status_filter (nbd, exportsize, 0, (char **) dupes, (nbd_extent64_callback) { .callback = cb, .user_data = &seen }, 0) != -1) { fprintf (stderr, "expecting block status failure\n"); exit (EXIT_FAILURE); } } if (nbd_get_errno () != EINVAL) { fprintf (stderr, "expecting EINVAL after block status failure\n"); exit (EXIT_FAILURE); } assert (seen == 0x0); if (nbd_stats_bytes_sent (nbd) <= bytes_sent) { fprintf (stderr, "expecting server-side rejection of bad request\n"); exit (EXIT_FAILURE); } /* Done */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/interop/dirty-bitmap.c0000644000175000017500000001440514616437241012755 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test reading qemu dirty bitmap. */ #include #include #include #include #include #include #include #include #include #include static const char *bitmap; struct data { bool req_one; /* input: true if req_one was passed to request */ int count; /* input: count of expected remaining calls */ bool fail; /* input: true to return failure */ bool seen_base; /* output: true if base:allocation encountered */ bool seen_dirty; /* output: true if qemu:dirty-bitmap encountered */ }; static int cb (void *opaque, const char *metacontext, uint64_t offset, uint32_t *entries, size_t len, int *error) { struct data *data = opaque; /* libnbd does not actually verify that a server is fully compliant * to the spec; the asserts marked [qemu-nbd] are thus dependent on * the fact that qemu-nbd is compliant. Furthermore, qemu 5.2 and * 6.0 disagree on whether base:allocation includes the hole bit for * the zeroes at 512k (both answers are compliant); but we care more * that the zeroes show up in the dirty bitmap */ assert (offset == 0); assert (!*error || (data->fail && data->count == 1 && *error == EPROTO)); assert (data->count-- > 0); /* [qemu-nbd] */ if (strcmp (metacontext, LIBNBD_CONTEXT_BASE_ALLOCATION) == 0) { assert (!data->seen_base); /* [qemu-nbd] */ data->seen_base = true; if (data->req_one) assert (len == 2); /* [qemu-nbd] */ else assert ((len & 1) == 0 && len > 2); /* [qemu-nbd] */ /* Data block offset 0 size 128k */ assert (entries[0] == 131072); assert (entries[1] == 0); if (!data->req_one) { if (len == 4) { /* hole|zero offset 128k size 896k */ assert (entries[2] == 917504); assert (entries[3] == (LIBNBD_STATE_HOLE| LIBNBD_STATE_ZERO)); } else { assert (len == 8); /* hole|zero offset 128k size 384k */ assert (entries[2] == 393216); assert (entries[3] == (LIBNBD_STATE_HOLE| LIBNBD_STATE_ZERO)); /* allocated zero offset 512k size 64k */ assert (entries[4] == 65536); assert (entries[5] == LIBNBD_STATE_ZERO); /* hole|zero offset 576k size 448k */ assert (entries[6] == 458752); assert (entries[7] == (LIBNBD_STATE_HOLE| LIBNBD_STATE_ZERO)); } } } else if (strcmp (metacontext, bitmap) == 0) { assert (!data->seen_dirty); /* [qemu-nbd] */ data->seen_dirty = true; assert (len == (data->req_one ? 2 : 10)); /* [qemu-nbd] */ assert (entries[0] == 65536); assert (entries[1] == 0); if (!data->req_one) { /* dirty block offset 64K size 64K */ assert (entries[2] == 65536); assert (entries[3] == 1); assert (entries[4] == 393216); assert (entries[5] == 0); /* dirty block offset 512K size 64K */ assert (entries[6] == 65536); assert (entries[7] == 1); assert (entries[8] == 458752); assert (entries[9] == 0); } } else { fprintf (stderr, "unexpected context %s\n", metacontext); exit (EXIT_FAILURE); } if (data->fail) { /* Something NBD servers can't send */ *error = data->count == 1 ? EPROTO : ECONNREFUSED; return -1; } return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t exportsize; struct data data; nbd_extent_callback extent_callback = { .callback = cb, .user_data = &data }; char c; if (argc < 3 || strncmp (argv[1], LIBNBD_CONTEXT_QEMU_DIRTY_BITMAP, strlen (LIBNBD_CONTEXT_QEMU_DIRTY_BITMAP)) != 0) { fprintf (stderr, "%s qemu:dirty-bitmap:name qemu-nbd [args ...]\n", argv[0]); exit (EXIT_FAILURE); } bitmap = argv[1]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION); nbd_add_meta_context (nbd, bitmap); if (nbd_connect_systemd_socket_activation (nbd, &argv[2]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } data = (struct data) { .count = 2, }; if (nbd_block_status (nbd, exportsize, 0, extent_callback, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (data.seen_base && data.seen_dirty); data = (struct data) { .req_one = true, .count = 2, }; if (nbd_block_status (nbd, exportsize, 0, extent_callback, LIBNBD_CMD_FLAG_REQ_ONE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (data.seen_base && data.seen_dirty); /* Trigger a failed callback, to prove connection stays up. */ data = (struct data) { .count = 2, .fail = true, }; if (nbd_block_status (nbd, exportsize, 0, extent_callback, 0) != -1) { fprintf (stderr, "unexpected block status success\n"); exit (EXIT_FAILURE); } assert (nbd_get_errno () == EPROTO && nbd_aio_is_ready (nbd)); assert (data.seen_base && data.seen_dirty); if (nbd_pread (nbd, &c, 1, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/interop/interop.c0000644000175000017500000002102214636623456012030 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test interop with other servers. */ #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_GNUTLS #include #endif #include #include "../tests/requires.h" #define SIZE (1024*1024) #if defined(CERTS) || defined(PSK) #define TLS 1 #ifndef TLS_MODE #error "TLS_MODE must be defined when using CERTS || PSK" #endif #endif #define TMPFILE tmp static char tmp[] = "/tmp/nbdXXXXXX"; static void unlink_tmpfile (void) { unlink (TMPFILE); } #ifdef HAVE_GNUTLS #if TLS static void tls_log (int level, const char *msg) { /* Messages from GnuTLS are always \n-terminated. */ fprintf (stderr, "gnutls[%d]: %s", level, msg); } #endif #endif int main (int argc, char *argv[]) { struct nbd_handle *nbd; char *args[] = { SERVER, SERVER_PARAMS, NULL }; int64_t actual_size; char buf[512], buf2[512]; size_t i; int r; /* Check requirements or skip the test. */ #ifdef REQUIRES REQUIRES #endif /* Ignore SIGPIPE. We only need this for GnuTLS that lacks the * GNUTLS_NO_SIGNAL flag, either because it predates GnuTLS 3.4.2 or * because the OS lacks MSG_NOSIGNAL support. */ #if TLS && !defined (HAVE_GNUTLS_NO_SIGNAL) signal (SIGPIPE, SIG_IGN); #endif /* Create a large sparse temporary file. */ int fd = mkstemp (TMPFILE); if (fd == -1 || ftruncate (fd, SIZE) == -1 || close (fd) == -1) { perror (TMPFILE); exit (EXIT_FAILURE); } atexit (unlink_tmpfile); nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #ifdef EXPORT_NAME if (nbd_set_export_name (nbd, EXPORT_NAME) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif #if TLS if (nbd_supports_tls (nbd) != 1) { fprintf (stderr, "skip: compiled without TLS support\n"); exit (77); } #ifdef HAVE_GNUTLS /* This is kind of ugly but GnuTLS only allows us to set these * globally (so they are not appropriate for libnbd). * * Also by default GnuTLS throws away log messages even if you * called gnutls_global_set_log_level. It doesn't install the * default log handler unless you set $GNUTLS_DEBUG_LEVEL. So we * need to have our own log handler. * * Also the log levels are quite random. Level 2 doesn't show the * negotiated cyphersuite, but level 3+ shows excessive detail. */ gnutls_global_set_log_level (2); gnutls_global_set_log_function (tls_log); #endif if (nbd_set_tls (nbd, TLS_MODE) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_set_tls_username (nbd, "alice") == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif #if defined(CERTS) const char *certs = CERTS; if (certs && nbd_set_tls_certificates (nbd, certs) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #elif defined(PSK) if (nbd_set_tls_psk_file (nbd, PSK) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif /* Print the server parameters. */ fprintf (stderr, "server: %s", args[0]); for (i = 1; args[i] != NULL; ++i) fprintf (stderr, " %s", args[i]); fprintf (stderr, "\n"); /* Start the server. */ #if SOCKET_ACTIVATION #define NBD_CONNECT nbd_connect_systemd_socket_activation #else #define NBD_CONNECT nbd_connect_command #endif r = NBD_CONNECT (nbd, args); #if EXPECT_FAIL if (r != -1) { fprintf (stderr, "%s: expected connection to fail but it did not\n", argv[0]); exit (EXIT_FAILURE); } exit (EXIT_SUCCESS); /*NOTREACHED*/ #else if (r == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } #endif #if TLS if (TLS_MODE == LIBNBD_TLS_REQUIRE) { if (nbd_get_tls_negotiated (nbd) != 1) { fprintf (stderr, "%s: TLS required, but not negotiated on the connection\n", argv[0]); exit (EXIT_FAILURE); } } else if (TLS_MODE == LIBNBD_TLS_ALLOW) { #if TLS_FALLBACK if (nbd_get_tls_negotiated (nbd) != 0) { fprintf (stderr, "%s: TLS disabled, but connection didn't fall back to " "plaintext\n", argv[0]); exit (EXIT_FAILURE); } #else // !TLS_FALLBACK if (nbd_get_tls_negotiated (nbd) != 1) { fprintf (stderr, "%s: TLS allowed, but not negotiated on the connection\n", argv[0]); exit (EXIT_FAILURE); } #endif } #endif /* The apparent size reported over NBD should match the real size of * the temporary file. */ actual_size = nbd_get_size (nbd); if (actual_size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (actual_size != SIZE) { fprintf (stderr, "%s: actual size %" PRIi64 " <> expected size %d", argv[0], actual_size, SIZE); exit (EXIT_FAILURE); } /* Test reading. */ if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_is_read_only (nbd) == 0) { /* Test writing. */ memset (buf, 0x5a, sizeof buf); if (nbd_pwrite (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_can_flush (nbd) > 0) { /* Test flush. */ if (nbd_flush (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Test the temporary file is updated after flush. */ fd = open (TMPFILE, O_RDONLY); if (fd == -1) { perror (TMPFILE); exit (EXIT_FAILURE); } if (read (fd, buf2, sizeof buf2) == -1) { perror ("read"); exit (EXIT_FAILURE); } close (fd); if (memcmp (buf, buf2, sizeof buf) != 0) { fprintf (stderr, "%s: error: " "backing file was not updated after write + flush\n", argv[0]); exit (EXIT_FAILURE); } } /* nbd_can_flush */ else { printf ("%s: warning: server does not support flush\n", argv[0]); } } /* !nbd_is_read_only */ else { printf ("%s: warning: server does not support writes\n", argv[0]); } if (nbd_can_zero (nbd) > 0) { /* Test writing zeroes. */ if (nbd_zero (nbd, SIZE, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_can_flush (nbd) > 0) { /* Test flush. */ if (nbd_flush (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Test the temporary file is all zeroes after flush. */ fd = open (TMPFILE, O_RDONLY); if (fd == -1) { perror (TMPFILE); exit (EXIT_FAILURE); } memset (buf, 0, sizeof buf); for (i = 0; i < SIZE; i += sizeof buf2) { if (read (fd, buf2, sizeof buf2) == -1) { perror ("read"); exit (EXIT_FAILURE); } if (memcmp (buf, buf2, sizeof buf) != 0) { fprintf (stderr, "%s: error: " "backing file was not updated after zero + flush\n", argv[0]); exit (EXIT_FAILURE); } } close (fd); } /* nbd_can_flush */ else { printf ("%s: warning: server does not support flush\n", argv[0]); } } /* nbd_can_zero */ else { printf ("%s: warning: server does not support zeroing\n", argv[0]); } /* XXX Test trim and block_status. */ if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/interop/requires.c0000644000175000017500000000700214675532407012207 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Check for a requirement or skip the test. */ #include #include #include #include #include #include "requires.h" void requires (const char *cmd) { printf ("requires %s\n", cmd); fflush (stdout); if (system (cmd) != 0) { printf ("Test skipped because prerequisite is missing or not working.\n"); exit (77); } } void requires_not (const char *cmd) { printf ("requires_not %s\n", cmd); fflush (stdout); if (system (cmd) == 0) { printf ("Test skipped because prerequisite is missing or not working.\n"); exit (77); } } void requires_not_exists (const char *filename) { printf ("requires_not_exists %s\n", filename); fflush (stdout); if (access (filename, F_OK) == 0) { printf ("Test skipped because file '%s' exists.\n", filename); exit (77); } } #ifdef QEMU_NBD /* Check qemu-nbd was compiled with support for TLS. */ void requires_qemu_nbd_tls_support (void) { char cmd[256]; /* Note the qemu-nbd command will fail in some way. We're only * interested in the error message that it prints. */ snprintf (cmd, sizeof cmd, "! " QEMU_NBD " --object tls-creds-x509,id=tls0 2>&1 \\\n" " | grep -sq 'TLS credentials support requires GNUTLS'\n"); requires (cmd); } /* Check qemu-nbd supports PSK (version 3.0.0 and above). */ void requires_qemu_nbd_tls_psk_support (void) { char cmd[256]; /* Note the qemu-nbd command will fail in some way. We're only * interested in the error message that it prints. */ snprintf (cmd, sizeof cmd, "! " QEMU_NBD " --object tls-creds-psk,id=tls0 / 2>&1 \\\n" " | grep -sq 'invalid object type'\n"); requires (cmd); } #else /* !QEMU_NBD */ void requires_qemu_nbd_tls_support (void) { fprintf (stderr, "qemu-nbd not available at compile time\n"); exit (77); } void requires_qemu_nbd_tls_psk_support (void) { fprintf (stderr, "qemu-nbd not available at compile time\n"); exit (77); } #endif #ifdef NBD_SERVER /* On some distros, nbd-server is built without support for syslog * which prevents use of inetd mode. Instead nbd-server will exit with * this error: * * Error: inetd mode requires syslog * Exiting. * * https://listman.redhat.com/archives/libguestfs/2022-January/msg00003.html */ void requires_nbd_server_supports_inetd (void) { char cmd[256]; snprintf (cmd, sizeof cmd, "\"%s\" --version", NBD_SERVER); requires (cmd); snprintf (cmd, sizeof cmd, "grep 'inetd mode requires syslog' \"$(command -v \"%s\")\"", NBD_SERVER); requires_not (cmd); } #else /* !NBD_SERVER */ void requires_nbd_server_supports_inetd (void) { fprintf (stderr, "nbd-server not available at compile time\n"); exit (77); } #endif libnbd-1.20.3/interop/list-exports.c0000644000175000017500000001052614616437241013025 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test nbd_set_list_exports against an NBD server. */ #include #include #include #include #include #include #include #include #include "array-size.h" #include "../tests/requires.h" #ifdef NEEDS_TMPFILE #define TMPFILE tmp static char tmp[] = "/tmp/nbdXXXXXX"; static void unlink_tmpfile (void) { unlink (TMPFILE); } #endif /* NEEDS_TMPFILE */ static const char *exports[] = { EXPORTS }; static const char *descriptions[ARRAY_SIZE (exports)] = { DESCRIPTIONS }; static char *actual[ARRAY_SIZE (exports)][2]; /* (name, description) recvd */ static char *progname; static int append (void *opaque, const char *name, const char *description) { size_t *ip = opaque; size_t i = *ip; if (i >= ARRAY_SIZE (exports)) { fprintf (stderr, "%s: server returned more exports than expected", progname); exit (EXIT_FAILURE); } printf ("append: i=%zu name=\"%s\" description=\"%s\"\n", i, name, description); fflush (stdout); actual[i][0] = strdup (name); actual[i][1] = strdup (description); if (!actual[i][0] || !actual[i][1]) abort (); (*ip)++; return 0; } static int compare_actuals (const void *vp1, const void *vp2) { return strcmp (*(char * const *)vp1, *(char * const *)vp2); } static void free_actuals (void) { size_t i; for (i = 0; i < ARRAY_SIZE (exports); ++i) { free (actual[i][0]); free (actual[i][1]); } } int main (int argc, char *argv[]) { struct nbd_handle *nbd; size_t i = 0; progname = argv[0]; /* Check requirements or skip the test. */ #ifdef REQUIRES REQUIRES #endif #ifdef NEEDS_TMPFILE /* Create a sparse temporary file. */ int fd = mkstemp (TMPFILE); if (fd == -1 || ftruncate (fd, 1024) == -1 || close (fd) == -1) { perror (TMPFILE); exit (EXIT_FAILURE); } atexit (unlink_tmpfile); #endif nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Set option mode in the handle. */ nbd_set_opt_mode (nbd, true); /* Run the NBD server. */ char *args[] = { SERVER, SERVER_PARAMS, NULL }; #if SOCKET_ACTIVATION #define NBD_CONNECT nbd_connect_systemd_socket_activation #else #define NBD_CONNECT nbd_connect_command #endif if (NBD_CONNECT (nbd, args) == -1 || nbd_opt_list (nbd, (nbd_list_callback) { .callback = append, .user_data = &i}) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Check for expected number of exports. */ if (i != ARRAY_SIZE (exports)) { fprintf (stderr, "%s: expected %zu export, but got %zu\n", argv[0], ARRAY_SIZE (exports), i); exit (EXIT_FAILURE); } /* Servers won't always return the list of exports in a particular * order. In particular nbdkit-file-plugin returns them in the * order they are read from the directory by readdir. Sort before * comparing. */ qsort (actual, ARRAY_SIZE (exports), sizeof actual[0], compare_actuals); for (i = 0; i < ARRAY_SIZE (exports); ++i) { if (strcmp (actual[i][0], exports[i]) != 0) { fprintf (stderr, "%s: expected export \"%s\", but got \"%s\"\n", progname, exports[i], actual[i][0]); exit (EXIT_FAILURE); } if (strcmp (actual[i][1], descriptions[i]) != 0) { fprintf (stderr, "%s: expected description \"%s\", but got \"%s\"\n", progname, descriptions[i], actual[i][1]); exit (EXIT_FAILURE); } } nbd_opt_abort (nbd); nbd_close (nbd); free_actuals (); exit (EXIT_SUCCESS); } libnbd-1.20.3/interop/opt-extended-headers.c0000644000175000017500000001204414616437241014356 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Demonstrate low-level use of nbd_opt_extended_headers(). */ #include #include #include #include #include #include #include #include #include #include #include #define check(got, exp) do_check (#got, got, exp) static void do_check (const char *act, int64_t got, int64_t exp) { fprintf (stderr, "trying %s\n", act); if (got == -1) fprintf (stderr, "%s\n", nbd_get_error ()); else fprintf (stderr, "succeeded, result %" PRId64 "\n", got); if (got != exp) { fprintf (stderr, "got %" PRId64 ", but expected %" PRId64 "\n", got, exp); exit (EXIT_FAILURE); } } static int cb (void *data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { /* If we got here, extents worked, implying at least structured replies */ bool *seen = data; *seen = true; return 0; } struct nbd_handle * prep (bool sr, bool eh, char **cmd) { struct nbd_handle *nbd; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Connect to the server in opt mode, disable client-side failsafes so * that we are testing server response even when client breaks protocol. */ check (nbd_set_opt_mode (nbd, true), 0); check (nbd_set_strict_mode (nbd, 0), 0); check (nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION), 0); check (nbd_set_request_structured_replies (nbd, sr), 0); check (nbd_set_request_extended_headers (nbd, eh), 0); check (nbd_connect_systemd_socket_activation (nbd, cmd), 0); return nbd; } void cleanup (struct nbd_handle *nbd, bool extents_exp) { bool extents = false; check (nbd_opt_go (nbd), 0); check (nbd_can_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION), extents_exp); check (nbd_block_status_64 (nbd, 512, 0, (nbd_extent64_callback) { .callback = cb, .user_data = &extents }, 0), extents_exp ? 0 : -1); check (extents, extents_exp); nbd_close (nbd); } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t bytes_sent; if (argc < 2) { fprintf (stderr, "%s qemu-nbd [args ...]\n", argv[0]); exit (EXIT_FAILURE); } /* Default setup tries eh first, and skips sr request when eh works... */ nbd = prep (true, true, &argv[1]); bytes_sent = nbd_stats_bytes_sent (nbd); check (nbd_get_extended_headers_negotiated (nbd), true); check (nbd_get_structured_replies_negotiated (nbd), true); /* Duplicate eh request is no-op as redundant, but does not change state */ check (nbd_opt_extended_headers (nbd), false); /* Trying sr after eh is no-op as redundant, but does not change state */ check (nbd_opt_structured_reply (nbd), false); check (nbd_get_extended_headers_negotiated (nbd), true); check (nbd_get_structured_replies_negotiated (nbd), true); cleanup (nbd, true); /* ...which should result in the same amount of initial negotiation * traffic as explicitly requesting just structured replies, albeit * with different results on what got negotiated. */ nbd = prep (true, false, &argv[1]); check (nbd_stats_bytes_sent (nbd), bytes_sent); check (nbd_get_extended_headers_negotiated (nbd), false); check (nbd_get_structured_replies_negotiated (nbd), true); cleanup (nbd, true); /* request_eh is ignored if request_sr is false. */ nbd = prep (false, true, &argv[1]); check (nbd_get_extended_headers_negotiated (nbd), false); check (nbd_get_structured_replies_negotiated (nbd), false); cleanup (nbd, false); /* Swap order, requesting structured replies before extended headers */ nbd = prep (false, false, &argv[1]); check (nbd_get_extended_headers_negotiated (nbd), false); check (nbd_get_structured_replies_negotiated (nbd), false); check (nbd_opt_structured_reply (nbd), true); check (nbd_get_extended_headers_negotiated (nbd), false); check (nbd_get_structured_replies_negotiated (nbd), true); check (nbd_opt_extended_headers (nbd), true); check (nbd_get_extended_headers_negotiated (nbd), true); check (nbd_get_structured_replies_negotiated (nbd), true); cleanup (nbd, true); exit (EXIT_SUCCESS); } libnbd-1.20.3/interop/socket-activation.c0000644000175000017500000000441214525371754014001 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test interop with nbdkit or qemu-nbd, and systemd socket activation. */ #include #include #include #include #include #include #include #define SIZE 1048576 int main (int argc, char *argv[]) { struct nbd_handle *nbd; char tmpfile[] = "/tmp/nbdXXXXXX"; int fd; int64_t actual_size; char buf[512]; int r = -1; /* Create a large sparse temporary file. */ fd = mkstemp (tmpfile); if (fd == -1 || ftruncate (fd, SIZE) == -1 || close (fd) == -1) { perror (tmpfile); goto out; } nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); goto out; } char *args[] = { SERVER, SERVER_PARAMS, NULL }; if (nbd_connect_systemd_socket_activation (nbd, args) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto out; } actual_size = nbd_get_size (nbd); if (actual_size == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto out; } if (actual_size != SIZE) { fprintf (stderr, "%s: actual size %" PRIi64 " <> expected size %d", argv[0], actual_size, SIZE); goto out; } if (nbd_pread (nbd, buf, sizeof buf, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto out; } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); goto out; } nbd_close (nbd); r = 0; out: unlink (tmpfile); exit (r == 0 ? EXIT_SUCCESS : EXIT_FAILURE); } libnbd-1.20.3/interop/structured-read.c0000644000175000017500000001305514616437241013465 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* Test structured reply read callback. */ #include #include #include #include #include #include #include #include #include #include /* Depends on structured-read.sh setting things up so that qemu-nbd * exposes an image with a 512-byte hole at offset 2048 followed by a * 512-byte data section containing all '1' bytes at offset 2560 * (non-zero offsets to test that everything is calculated correctly). */ static char rbuf[1024]; struct data { bool df; /* input: true if DF flag was passed to request */ int count; /* input: count of expected remaining calls */ bool fail; /* input: true to return failure */ bool seen_hole; /* output: true if hole encountered */ bool seen_data; /* output: true if data encountered */ }; static int read_cb (void *opaque, const void *bufv, size_t count, uint64_t offset, unsigned status, int *error) { struct data *data = opaque; const char *buf = bufv; /* The NBD spec allows chunks to be reordered; we are relying on the * fact that qemu-nbd does not do so. */ assert (!*error || (data->fail && data->count == 1 && *error == EPROTO)); assert (data->count-- > 0); switch (status) { case LIBNBD_READ_DATA: if (data->df) { assert (buf == rbuf); assert (count == 1024); assert (offset == 2048); assert (buf[0] == 0 && memcmp (buf, buf + 1, 511) == 0); assert (buf[512] == 1 && memcmp (buf + 512, buf + 513, 511) == 0); } else { assert (buf == rbuf + 512); assert (count == 512); assert (offset == 2048 + 512); assert (buf[0] == 1 && memcmp (buf, buf + 1, 511) == 0); } assert (!data->seen_data); data->seen_data = true; break; case LIBNBD_READ_HOLE: assert (!data->df); /* Relies on qemu-nbd's behavior */ assert (buf == rbuf); assert (count == 512); assert (offset == 2048); assert (buf[0] == 0 && memcmp (buf, buf + 1, 511) == 0); assert (!data->seen_hole); data->seen_hole = true; break; case LIBNBD_READ_ERROR: /* For now, qemu-nbd cannot provoke this status. */ default: assert (false); } if (data->fail) { /* Something NBD servers can't send */ *error = data->count == 1 ? EPROTO : ECONNREFUSED; return -1; } return 0; } int main (int argc, char *argv[]) { struct nbd_handle *nbd; int64_t exportsize; struct data data; nbd_chunk_callback chunk_callback = { .callback = read_cb, .user_data = &data }; char c; if (argc < 2) { fprintf (stderr, "%s qemu-nbd [args ...]\n", argv[0]); exit (EXIT_FAILURE); } nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_connect_systemd_socket_activation (nbd, &argv[1]) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } exportsize = nbd_get_size (nbd); if (exportsize == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (exportsize != 3072) { fprintf (stderr, "unexpected file size\n"); exit (EXIT_FAILURE); } if (nbd_can_df (nbd) != 1) { fprintf (stderr, "skipping test: qemu too old to use structured reads\n"); exit (77); } memset (rbuf, 2, sizeof rbuf); data = (struct data) { .count = 2, }; if (nbd_pread_structured (nbd, rbuf, sizeof rbuf, 2048, chunk_callback, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (data.seen_data && data.seen_hole); /* Repeat with DF flag. */ memset (rbuf, 2, sizeof rbuf); data = (struct data) { .df = true, .count = 1, }; if (nbd_pread_structured (nbd, rbuf, sizeof rbuf, 2048, chunk_callback, LIBNBD_CMD_FLAG_DF) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } assert (data.seen_data && !data.seen_hole); /* Trigger a failed callback, to prove connection stays up. With * reads, all chunks trigger a callback even after failure, but the * first errno sticks. */ memset (rbuf, 2, sizeof rbuf); data = (struct data) { .count = 2, .fail = true, }; if (nbd_pread_structured (nbd, rbuf, sizeof rbuf, 2048, chunk_callback, 0) != -1) { fprintf (stderr, "unexpected pread callback success\n"); exit (EXIT_FAILURE); } assert (nbd_get_errno () == EPROTO && nbd_aio_is_ready (nbd)); assert (data.seen_data && data.seen_hole); if (nbd_pread (nbd, &c, 1, 0, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } if (nbd_shutdown (nbd, 0) == -1) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } nbd_close (nbd); exit (EXIT_SUCCESS); } libnbd-1.20.3/interop/dirty-bitmap.sh0000755000175000017500000000314014553253065013142 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test reading qemu dirty-bitmap. source ../tests/functions.sh set -e set -x requires qemu-img bitmap --help requires qemu-io --version requires $QEMU_NBD --version # This test uses the qemu-nbd -B option. if ! $QEMU_NBD --help | grep -sq -- -B; then echo "$0: skipping because $QEMU_NBD does not support the -B option" exit 77 fi files="dirty-bitmap.qcow2" rm -f $files cleanup_fn rm -f $files # Create file with intentionally different written areas vs. dirty areas qemu-img create -f qcow2 dirty-bitmap.qcow2 1M qemu-io -f qcow2 -c 'w 0 64k' dirty-bitmap.qcow2 qemu-img bitmap --add --enable -f qcow2 dirty-bitmap.qcow2 bitmap0 qemu-io -f qcow2 -c 'w 64k 64k' -c 'w -z 512k 64k' dirty-bitmap.qcow2 # Run the test. $VG ./dirty-bitmap qemu:dirty-bitmap:bitmap0 \ $QEMU_NBD -f qcow2 -B bitmap0 dirty-bitmap.qcow2 libnbd-1.20.3/interop/interop-qemu-storage-daemon.sh0000755000175000017500000000521014553251767016074 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test interop with qemu-storage-daemon. source ../tests/functions.sh set -e set -x requires test "x$QEMU_STORAGE_DAEMON" != "x" requires sed --version qsd_version="$($QEMU_STORAGE_DAEMON --version | \ sed -n '1s/qemu-storage-daemon version \([0-9.]*\).*/\1/p')" requires_not test "$qsd_version" = "5.1.0" requires_not test "$qsd_version" = "5.2.0" requires_not test "$qsd_version" = "6.0.0" requires nbdsh --version requires qemu-img --version f="qemu-storage-daemon-disk.qcow2" sock=$(mktemp -u /tmp/interop-qsd.XXXXXX) rm -f $f $sock cleanup_fn rm -f $f $sock qemu-img create $f 10M -f qcow2 export QEMU_STORAGE_DAEMON f sock $VG nbdsh -c - <<'EOF' import os import signal import socket import sys # Get the name of q-s-d defined by ./configure. qsd = os.environ["QEMU_STORAGE_DAEMON"] # Test disk. f = os.environ["f"] # Unique socket name. sock = os.environ["sock"] # Create two sockets for client and server. We pass the listening # socket to q-s-d. client_sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) qsd_sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) os.set_inheritable(qsd_sock.fileno(), True) qsd_sock.bind(sock) qsd_sock.listen() client_sock.connect(sock) # Assemble q-s-d command line. argv = [ qsd, "--blockdev", "qcow2,file.driver=file,file.filename=" + f + ",node-name=disk0", "--nbd-server", "addr.type=fd,addr.str=" + str(qsd_sock.fileno()), "--export", "nbd,node-name=disk0,id=nbd0,name=,writable=on" ] print("server: %r" % argv, file=sys.stderr) pid = os.fork() if pid == 0: client_sock.close() os.execvp(qsd, argv) else: qsd_sock.close() # Connect to the server and test. h.connect_socket(client_sock.fileno()) # Read and write. buf = b"1" * 512 h.pwrite(buf, 512) buf2 = h.pread(1024, 0) assert bytearray(512) + buf == buf2 h.shutdown() # Kill the server. os.kill(pid, signal.SIGTERM) EOF libnbd-1.20.3/interop/interop-qemu-block-size.sh0000755000175000017500000000537514553253116015233 #!/usr/bin/env bash # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # Test interop with qemu-nbd block sizes. source ../tests/functions.sh set -e set -x # versions of qemu-nbd older than 4.0 reported inaccurate block sizes # Use 'qemu-nbd --list' as our witness, it was also added in 4.0 requires $QEMU_NBD --list --version requires nbdsh --version requires qemu-img --version requires truncate --version requires timeout --version f="qemu-block-size.raw" sock=$(mktemp -u /tmp/interop-qemu.XXXXXX) rm -f $f $sock cleanup_fn rm -f $f $sock truncate --size=10M $f export sock fail=0 # run_test FMT REQUEST EXP_INFO EXP_GO run_test() { rm -f $sock # No -t or -e, so qemu-nbd should exit once nbdsh disconnects timeout 60s $QEMU_NBD -k $sock $1 $f & pid=$! # Wait for the socket to appear for i in {1..30}; do if test -e $sock; then break fi sleep 1 done $VG nbdsh -c - <*77\zy_&|sP@p :l/M֨XcQ}{K齆Q_Fߦ.VUFP3U8 ў-L|ǚg6rv2E*pȸD?p GՉ*K,1.f@PAqr͔b7'hȬ#>ճ.{7TC5bF98 2%)4Z%Z0ǖ؃yPð!$`ǜ4.Oݛb{:yы^;+رzփti/ hGŃ FFyb܆~0kk>;CƳ3&H7t1 S)I_&j<cVۧOw$9uf+IrY#!&o@K[bM+V4e1.їNSEe  ֊ d6 V$:rQ\QV|sv6~3,xX_P6݈S˔x%?Jdz 5BV!%ߑΈFZd;.܎a <,{bW)Jw*PfKA2ΰsfèuDz PŪ':`ap+3%;F:0+nvqz3j' <|1ILb,M}9LO0r,aNB#| @A`n83"vӕI3V%D 2 H^/3-X| WQDX7 ̬߄Gzxj!.;YQFԷhጔ% FL:kڕuPW(^?_o<6?lr=XRy~ J˹w7͔w*뢈!(uDy'@WzkP}|3ͲjC[%k<# v@¼_m?. u;ݰaU,y8oSjÝr6~r1 L=mcEDd1e(w,_=%+lG6Z %mGap)E_xVP`^>͢ڐDuCCffOйOa1[w:ac-rԬKuPe]v чy DIUbh@ʤ5SAG~96WOte10=WR?rAi3MC*Ę UJ;[.WCֆP~}/u,笟+%8wp?{mSDspef4yL\SM, A iW<$9Veϥ_]oV]2|%{Q۝fEwTg VBk N>ĵc편0wn)ZA#Ym/P雵iH(8J~)Q qj 9'qNFZ`fl6϶^a+)ZSlDkt # OZREgjDϦmm)ZOcdئfRA2n< }tN઀ň1*Hb)fqqΪ4Yڧ:Xf@}6p3n RsrtTl\Ŭd X| [3AKBܜF9u|@r=ah ).R#//*P 7H΋r\ß/ۍ|` 19[PO6+sb sH)^m.֥Gdq剢>aSgb ctCnm$w mrF஘_x HpF0t{'dD eڭԳZ*> pcB7c☴x\hf Qh|+~~B& GaM5&پtG<o,=k œv@1̻LZ.!t|>nbX5ux]7ecϳ+׏Mm a^wBbfhR11_`1XN_7׌`֨2Jp£ЅC,_px KTu:xԾZ֍%ǷśZIO3͝r! bEPKL}ߋl"^֐)i("P.𿳾c;̱ 02~,=@hj)j `Y!X?㵃7/%&'}=V2 O0RK-{mϧۜ5i%V'$*_3 Rb_#m4VGr% -%ens'@N\l9Č˞v+Y\H,%ղ@x QɁ~&"$.W2}@l#<"R6[FՂ8.oDat/j׾MbF ԫ LtwLǁ/W't =N8\;k2[]o2þ/+ˣ~&,|/M&" r 3ѵ{ |J5xHO ~}2jԸ4_?@?5+s#}n+ =5aFMx&}!h߫9.="fod tSSݳȼ;aF`zA=!dFb;~ {О5Ȳ,ঈlS2ܾ")mr#(Pm8EP/ ݉Ϫ1gzUX]<2p¨U zzD/@L(Es:K1N zgs] QmA>fwDbN/dG7 *,'p# GX#P]w9TL(qQT4<#yh2 /"i1s QA{\i$%R <ׁuńS7,MXȥ1a$R։h|ct<a[3Ϛ8aV2eK˜8=@ץ u< "3[wuBmr [C+1 0]5uH#Nw%b-%lz"=QTg z[ê崼+t 0;pj𑍼8?ӫnFJ!yx3; t.Es8琯Wo茡As,!g{uzg[A]U?ee)`'vfj?hAi!Y=t°vܫ@ގ(lggĖ,ȝԧz@il0?W>1uK ;OdR ]V%PJ8 +_QCE=>tw~=S=Ա]5h1{ٕbGbkshsafvgڽ޹Ĵm@0DP_<B Jcb^^v ҳ*⼽e29?Uw=nAs7.'|Nwݲ3 Z:XIKt0>%G}GJ{$wQ?\nRv6}^t2H㽼v/GlWaTzD#8>K(FVVrlZFc@+;KEN:/F(˜;&ak6YϷBTXn)zyE!&$]^6Ջn0;oesgwKi]X*@#&|h!n8۶BzI3Mn2(xUc]G J־;:= - G../ocӡ44&E5Z{視JGK'IԅD)c+S..9n\f,:3"j$QNe0dq,]Ϙ@l"T`8$VpP#o2ΕnQtn%'J̛* d  RrI/åN*\ ԩjy'NT|*CeD8ޢ/^.Fn.3FU|u5ίlR;\_,l𓻮mpkבE3]X,i5Xe\r5\QMWlfdH7 _ewBq/xf {(ܰ[>ǔǧ]94!MuF-FIoTjl?ϕܠwt c^HS66ՠm+ ]ʆF4gp5dAeb3=53Ï=]O(Tl(VSȄi%Oi_FjpFX[5c itS+qt[|fZ݇*NI gPhQ}*Y1.pIȤnxAº(/vxwo,O',7!kӌxe0y;Z^0Ղm~@1*--WOz^ݡ$&pY}䫩C6pOhaO uy/y:wvD^/$c|YueCR\5{RFE6Bɉ"!w1$)\ZL~%Ub0+Bvvm1!fi`SĶ#=Oްo:[M9&>]7܂%(x'cw‘j^k3;~T1ixe6z.rLPl9)*u%k8(ՐO1:}:D|~pC,Niv}hv;¥ 0߶|\͎M]wzx@J~pPzi1{s0 #θAuݞ5sHr2RjE"yHwv Ƶ)6=ӝK۾v#&|2_87t bWT~b5¢c*t[tU*;$,. 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to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: libnbd-1.20.3/fuzzing/README0000644000175000017500000000750214525371754011105 To report security bugs, see ‘SECURITY’ in the top source directory. Fuzzing libnbd using the American Fuzzy Lop (AFL) fuzzer ======================================================== You can fuzz libnbd with AFL or AFL++ (https://aflplus.plus/) using the wrapper in this directory. You will need to recompile libnbd with AFL instrumentation: ./configure CC=/usr/bin/afl-gcc CXX=/usr/bin/afl-g++ \ --disable-shared \ --disable-golang --disable-ocaml --disable-python --disable-rust make clean make To use clang instead (recommended with AFL++): export AFL_USE_ASAN=1 ./configure CC=/usr/bin/afl-clang-lto CXX=/usr/bin/afl-clang-lto++ \ --disable-shared \ --disable-golang --disable-ocaml --disable-python --disable-rust make clean make The fuzzing/testcase_dir directory contains some initial testcases that AFL can use. Run multiple copies of afl-fuzz. Usually you should run 1 master (-M) and as many slaves (-S) as you can. Master: mkdir -p fuzzing/sync_dir afl-fuzz -i fuzzing/testcase_dir -o fuzzing/sync_dir -M fuzz01 \ ./fuzzing/libnbd-fuzz-wrapper @@ Slaves: # replace fuzzNN with fuzz02, fuzz03, etc. afl-fuzz -i fuzzing/testcase_dir -o fuzzing/sync_dir -S fuzzNN \ ./fuzzing/libnbd-fuzz-wrapper @@ Test Coverage ------------- To find out if the fuzzing is covering all of the code, I used afl-cov (https://github.com/mrash/afl-cov). Usage is rather complex, so consult the README of that project, but in brief: (1) Create a second copy of the libnbd source, and compile it with profiling: ./configure CFLAGS="-O2 -g -pg -fprofile-arcs -ftest-coverage" \ --disable-shared \ --disable-golang --disable-ocaml --disable-python --disable-rust make clean make (2) Assuming ../libnbd-afl is the libnbd source compiled with AFL, and the current directory is libnbd compiled with profiling, then run the command below. You can run this even while afl-fuzz is running. afl-cov -d ../libnbd-afl/fuzzing/sync_dir \ --code-dir . \ --coverage-cmd "fuzzing/libnbd-fuzz-wrapper AFL_FILE" This will create an HTML test coverage report in ../libnbd-afl/fuzzing/sync_dir/cov/web/ Fuzzing libnbd using honggfuzz ============================== Recompile libnbd with honggfuzz instrumentation: ./configure \ CC=/path/to/hfuzz-clang CXX=/path/to/hfuzz-clang++ \ --disable-shared \ --disable-golang --disable-ocaml --disable-python --disable-rust make clean make Run honggfuzz using test cases: honggfuzz -i fuzzing/testcase_dir -z -- \ ./fuzzing/libnbd-fuzz-wrapper ___FILE___ (Note 3 underscore characters on each side.) Fuzzing libnbd using Clang + libFuzzer ====================================== Recompile libnbd with libFuzzer enabled and build the libFuzzer test binary: ./configure \ CC=clang \ CFLAGS="-g -O1" \ --enable-libfuzzer \ --disable-shared \ --disable-golang --disable-ocaml --disable-python --disable-rust make clean make CFLAGS="-g -O1 -fsanitize=fuzzer,address" -C lib make CFLAGS="-g -O1 -fsanitize=fuzzer,address" \ -C fuzzing libnbd-libfuzzer-test (The awkward additional CFLAGS on the make command line are necessary because ./configure attempts to test that the compiler works, but this test fails when -fsanitize=fuzzer is used as that option adds an extra main() definition.) ",address" enables the Clang Address Sanitizer, and can be omitted for faster fuzzing. You can then run the fuzzer program directly on the input corpus: ./fuzzing/libnbd-libfuzzer-test fuzzing/testcase_dir New test inputs are written to fuzzing/testcase_dir and will be used on subsequent runs. If this is undesirable then delete fuzzing/testcase_dir/[0-f]* before the run. There are various extra command line options supported by libFuzzer. For more details see: https://llvm.org/docs/LibFuzzer.html libnbd-1.20.3/fuzzing/libnbd-fuzz-wrapper.c0000644000175000017500000002751514572120341014265 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* This is a wrapper allowing libnbd to be tested using common fuzzers * such as afl. It takes the fuzzer test case as a filename on the * command line. This is fed to the libnbd socket. Any output to the * socket from libnbd is sent to /dev/null. This is basically the * same way we fuzz nbdkit, but in reverse (see nbdkit.git/fuzzing). */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SOCK_CLOEXEC /* We do use exec, but only when using --write, which is a maintainer * operation that always runs on Linux. */ #define SOCK_CLOEXEC 0 #endif /* If defined, instead of creating the fuzzer wrapper, write a working * testcase to the named file. This runs nbdkit and captures the * input to libnbd (output from nbdkit) in the file. Use it like * this: * * Generate test case: * $ fuzzing/libnbd-fuzz-wrapper --write testcase * Test it: * $ LIBNBD_DEBUG=1 fuzzing/libnbd-fuzz-wrapper testcase * If it's good, copy it to the test case directory: * $ mv testcase fuzzing/testcase_dir/ */ static const char *write_testcase; static void client (int s); static void server (int fd, int s); static void nbdkit (int fd, int s); int main (int argc, char *argv[]) { int fd; pid_t pid; int sv[2], r, status; if (argc == 3 && strcmp (argv[1], "--write") == 0) { write_testcase = argv[2]; fd = open (argv[2], O_WRONLY|O_TRUNC|O_CREAT, 0644); if (fd == -1) { perror (argv[1]); exit (EXIT_FAILURE); } } else if (argc == 2) { /* Open the test case before we fork so we know the file exists. */ fd = open (argv[1], O_RDONLY); if (fd == -1) { perror (argv[1]); exit (EXIT_FAILURE); } } else { fprintf (stderr, "libnbd-fuzz-wrapper testcase\n"); exit (EXIT_FAILURE); } /* Create a connected socket. */ if (socketpair (AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, sv) == -1) { perror ("socketpair"); exit (EXIT_FAILURE); } /* Fork: The parent will be the libnbd process (client). The child * will be the (usually phony) NBD server listening on the socket. */ pid = fork (); if (pid == -1) { perror ("fork"); exit (EXIT_FAILURE); } if (pid > 0) { /* Parent: libnbd client. */ close (sv[1]); close (fd); client (sv[0]); close (sv[0]); r = wait (&status); if (r == -1) { perror ("wait"); exit (EXIT_FAILURE); } if (!WIFEXITED (status) || WEXITSTATUS (status) != 0) exit (EXIT_FAILURE); else exit (EXIT_SUCCESS); } /* Child: NBD server. */ close (sv[0]); if (!write_testcase) server (fd, sv[1]); else nbdkit (fd, sv[1]); close (sv[1]); _exit (EXIT_SUCCESS); } /* Structured reads callback, does nothing. */ static int chunk_callback (void *user_data, const void *subbuf, size_t count, uint64_t offset, unsigned status, int *error) { //fprintf (stderr, "chunk called: %" PRIu64 " %zu %u\n", // offset, count, status); return 0; } /* Block status (extents) callback, does nothing. */ static int extent_callback (void *user_data, const char *metacontext, uint64_t offset, uint32_t *entries, size_t nr_entries, int *error) { //fprintf (stderr, "extent called, nr_entries = %zu\n", nr_entries); return 0; } /* Block status (extents64) callback, does nothing. */ static int extent64_callback (void *user_data, const char *metacontext, uint64_t offset, nbd_extent *entries, size_t nr_entries, int *error) { //fprintf (stderr, "extent64 called, nr_entries = %zu\n", nr_entries); return 0; } /* This is the client (parent process) running libnbd. */ static char buf[512]; static char prbuf[65536]; static void client (int sock) { struct nbd_handle *nbd; int64_t length; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Note we ignore errors in these calls because we are only * interested in whether the process crashes. Likewise, we don't * want to accidentally avoid sending traffic to the server merely * because client side strictness sees a problem. */ nbd_set_strict_mode (nbd, 0); /* Enable a metadata context, for block status below. */ nbd_add_meta_context (nbd, LIBNBD_CONTEXT_BASE_ALLOCATION); /* This tests the handshake phase. */ nbd_set_opt_mode (nbd, true); nbd_connect_socket (nbd, sock); nbd_opt_info (nbd); nbd_opt_go (nbd); length = nbd_get_size (nbd); /* Test common asynchronous I/O calls. */ nbd_aio_pread (nbd, buf, sizeof buf, 0, NBD_NULL_COMPLETION, 0); nbd_aio_pwrite (nbd, buf, sizeof buf, 0, NBD_NULL_COMPLETION, 0); nbd_aio_flush (nbd, NBD_NULL_COMPLETION, 0); nbd_aio_trim (nbd, 8192, 8192, NBD_NULL_COMPLETION, 0); nbd_aio_zero (nbd, 8192, 65536, NBD_NULL_COMPLETION, 0); nbd_aio_cache (nbd, 8192, 0, NBD_NULL_COMPLETION, 0); /* Test structured reads. */ nbd_aio_pread_structured (nbd, prbuf, sizeof prbuf, 8192, (nbd_chunk_callback) { .callback = chunk_callback, }, NBD_NULL_COMPLETION, 0); /* Test both sizes of block status. */ nbd_aio_block_status (nbd, length, 0, (nbd_extent_callback) { .callback = extent_callback, }, NBD_NULL_COMPLETION, 0); nbd_aio_block_status_64 (nbd, length, 0, (nbd_extent64_callback) { .callback = extent64_callback, }, NBD_NULL_COMPLETION, 0); /* Run the commands until there are no more in flight or there is an * error caused by the server side disconnecting. */ while (nbd_aio_in_flight (nbd) > 0) { if (nbd_poll (nbd, -1) == -1) break; } /* Shutdown (if still connected). */ nbd_shutdown (nbd, 0); } /* This is the server (child process) acting like an NBD server. */ static void server (int fd, int sock) { struct pollfd pfds[1]; char rbuf[512], wbuf[512]; size_t wsize = 0; ssize_t r; for (;;) { pfds[0].fd = sock; pfds[0].events = POLLIN; if (wsize > 0 || fd >= 0) pfds[0].events |= POLLOUT; pfds[0].revents = 0; if (poll (pfds, 1, -1) == -1) { if (errno == EINTR) continue; perror ("poll"); /* This is not an error. */ return; } /* We can read from the client socket. Just throw away anything sent. */ if ((pfds[0].revents & POLLIN) != 0) { r = read (sock, rbuf, sizeof rbuf); if (r == -1 && errno != EINTR) { perror ("read"); return; } else if (r == 0) /* end of input from the server */ return; } /* We can write to the client socket. */ if ((pfds[0].revents & POLLOUT) != 0) { /* Write more data from the wbuf. */ if (wsize > 0) { morewrite: r = write (sock, wbuf, wsize); if (r == -1 && errno != EAGAIN && errno != EWOULDBLOCK) { perror ("write"); return; } else if (r > 0) { memmove (wbuf, &wbuf[r], wsize-r); wsize -= r; } } /* Write more data from the file. */ else if (fd >= 0) { r = read (fd, wbuf, sizeof wbuf); if (r == -1) { perror ("read"); _exit (EXIT_FAILURE); } else if (r == 0) { fd = -1; /* ignore the file from now on */ shutdown (sock, SHUT_WR); } else { wsize = r; goto morewrite; } } } } /* for (;;) */ } static void xwrite (int fd, const char *buf, size_t n); /* This is used for --write mode where we capture nbdkit output into a * testcase file. */ static void nbdkit (int fd, int sock) { pid_t pid; int rfd[2], wfd[2]; struct pollfd pfds[2]; char buf[512]; ssize_t r; bool parent_dead = false; if (pipe (rfd) == -1) { /* Will be our input, nbdkit's stdout */ perror ("pipe"); _exit (EXIT_FAILURE); } if (pipe (wfd) == -1) { /* Will be our output, nbdkit's stdin */ perror ("pipe"); _exit (EXIT_FAILURE); } /* Run nbdkit as another subprocess. */ pid = fork (); if (pid == -1) { perror ("fork"); _exit (EXIT_FAILURE); } if (pid == 0) { /* Child - nbdkit */ close (fd); close (sock); close (rfd[0]); dup2 (rfd[1], STDOUT_FILENO); close (wfd[1]); dup2 (wfd[0], STDIN_FILENO); execlp ("nbdkit", "nbdkit", "--exit-with-parent", "-s", "sparse-random", "--filter=cow", "size=1M", "runlength=8192", "percent=50", "random-content=true", NULL); perror ("execlp"); _exit (EXIT_FAILURE); } /* Here we shuffle the data: * * Our parent This process Our child * (libnbd) (nbdkit) * -------------> ------> -----wfd[1]----> * sock * <------------- <------ /<----rfd[0]----- * | * v * writes from nbdkit tee'd to fd (testcase) * * We do everything blocking because that is easier and performance * doesn't matter since we're only capturing a test case. */ close (rfd[1]); close (wfd[0]); while (!parent_dead || rfd[0] >= 0) { pfds[0].fd = parent_dead ? -1 : sock; pfds[0].events = POLLIN; pfds[0].revents = 0; pfds[1].fd = rfd[0]; pfds[1].events = POLLIN; pfds[1].revents = 0; if (poll (pfds, 2, -1) == -1) { if (errno == EINTR) continue; perror ("poll"); _exit (EXIT_FAILURE); } if (!parent_dead && (pfds[0].revents & POLLIN) != 0) { r = read (sock, buf, sizeof buf); if (r == -1 && errno != EINTR) { perror ("read (libnbd)"); _exit (EXIT_FAILURE); } else if (r == 0) { parent_dead = true; continue; } else if (r > 0) xwrite (wfd[1], buf, r); } if (rfd[0] != -1 && (pfds[1].revents & POLLIN) != 0) { r = read (rfd[0], buf, sizeof buf); if (r == -1 && errno == EINTR) { perror ("read (nbdkit)"); _exit (EXIT_FAILURE); } else if (r == 0) { close (rfd[0]); rfd[0] = -1; continue; } else if (r > 0) { xwrite (fd, buf, r); xwrite (sock, buf, r); } } } if (close (fd) == -1) { perror ("close"); _exit (EXIT_FAILURE); } } static void xwrite (int fd, const char *buf, size_t n) { ssize_t r; while (n > 0) { r = write (fd, buf, n); if (r == -1) { perror ("write"); _exit (EXIT_FAILURE); } buf += r; n -= r; } } libnbd-1.20.3/fuzzing/libnbd-libfuzzer-test.c0000644000175000017500000001046514616437241014607 /* NBD client library in userspace * Copyright Red Hat * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* This is a libFuzzer test case for libnbd. * * XXX Note: * * - This case is mostly unmaintained. The maintainers use AFL++ for * fuzzing (see libnbd-fuzz-wrapper.c). */ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SOCK_CLOEXEC #define SOCK_CLOEXEC 0 /* This file doesn't use exec */ #endif static void client (int sock); static void server (const uint8_t *data, size_t size, int sock); /* This is the entry point called by libFuzzer. */ int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size) { pid_t pid; int sv[2], r, status; /* Create a connected socket. */ if (socketpair (AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, sv) == -1) { perror ("socketpair"); exit (EXIT_FAILURE); } /* Fork: The parent will be the libnbd process (client). The child * will be the phony NBD server listening on the socket. */ pid = fork (); if (pid == -1) { perror ("fork"); exit (EXIT_FAILURE); } if (pid > 0) { /* Parent: libnbd client. */ close (sv[1]); client (sv[0]); close (sv[0]); again: r = wait (&status); if (r == -1) { if (errno == EINTR) goto again; perror ("wait"); exit (EXIT_FAILURE); } if (!WIFEXITED (status) || WEXITSTATUS (status) != 0) fprintf (stderr, "bad exit status %d\n", status); return 0; } /* Child: phony NBD server. */ close (sv[0]); server (data, size, sv[1]); close (sv[1]); _exit (EXIT_SUCCESS); } static void client (int sock) { struct nbd_handle *nbd; char buf[512]; nbd = nbd_create (); if (nbd == NULL) { fprintf (stderr, "%s\n", nbd_get_error ()); exit (EXIT_FAILURE); } /* Note we ignore errors in these calls because we are only * interested in whether the process crashes. */ /* This tests the handshake phase. */ nbd_connect_socket (nbd, sock); nbd_pread (nbd, buf, sizeof buf, 0, 0); nbd_pwrite (nbd, buf, sizeof buf, 0, 0); nbd_flush (nbd, 0); nbd_trim (nbd, 512, 0, 0); nbd_cache (nbd, 512, 0, 0); /* XXX Test structured reads and block status. */ nbd_shutdown (nbd, 0); nbd_close (nbd); } static void server (const uint8_t *data, size_t size, int sock) { struct pollfd pfds[1]; char rbuf[512]; ssize_t r; if (size == 0) shutdown (sock, SHUT_WR); for (;;) { pfds[0].fd = sock; pfds[0].events = POLLIN; if (size > 0) pfds[0].events |= POLLOUT; pfds[0].revents = 0; if (poll (pfds, 1, -1) == -1) { if (errno == EINTR) continue; perror ("poll"); /* This is not an error. */ return; } /* We can read from the client socket. Just throw away anything sent. */ if ((pfds[0].revents & POLLIN) != 0) { r = read (sock, rbuf, sizeof rbuf); if (r == -1 && errno != EINTR) { //perror ("read"); return; } else if (r == 0) /* end of input from the server */ return; } /* We can write to the client socket. */ if ((pfds[0].revents & POLLOUT) != 0) { if (size > 0) { r = write (sock, data, size); if (r == -1 && errno != EAGAIN && errno != EWOULDBLOCK) { perror ("write"); return; } else if (r > 0) { data += r; size -= r; if (size == 0) shutdown (sock, SHUT_WR); } } } } /* for (;;) */ } libnbd-1.20.3/bash-completion/0000755000175000017500000000000014675532655011676 5libnbd-1.20.3/bash-completion/Makefile.am0000644000175000017500000000260214540412516013632 # nbd client library in userspace # Copyright Red Hat # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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[3.59,3.63) of GNU make to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: libnbd-1.20.3/bash-completion/README0000644000175000017500000000046714525371754012500 This directory contains the scripts for tab-completing commands in bash. 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See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA # This is the handler function which completes nbd* commands. _libnbd_command () { local prog="$1" local cur prev words cword split local shortopts longopts _init_completion -s || return case "$cur" in --*) # long options longopts="$($prog --long-options)" COMPREPLY=( $(compgen -W "$longopts" -- "$cur") ) return ;; -*) # -o and --options shortopts="$($prog --short-options)" longopts="$($prog --long-options)" COMPREPLY=( $(compgen -W "$shortopts $longopts" -- "$cur") ) return ;; *) COMPREPLY=( $(compgen "$cur") ) return ;; esac } _nbdcopy () { _libnbd_command nbdcopy } _nbddump () { _libnbd_command nbddump } _nbdfuse () { _libnbd_command nbdfuse } _nbdinfo () { _libnbd_command nbdinfo } _nbdsh () { _libnbd_command nbdsh } _nbdublk () { _libnbd_command nbdublk } # Install the handler function. complete -o default -F _nbdcopy nbdcopy complete -o default -F _nbddump nbddump complete -o default -F _nbdfuse nbdfuse complete -o default -F _nbdinfo nbdinfo complete -o default -F _nbdsh nbdsh complete -o default -F _nbdublk nbdublk