void guestfs_pop_error_handler (guestfs_h *g) { struct error_cb_stack *next_stack; if (g->error_cb_stack) { next_stack = g->error_cb_stack->next; guestfs_set_error_handler (g, g->error_cb_stack->error_cb, g->error_cb_stack->error_cb_data); free (g->error_cb_stack); g->error_cb_stack = next_stack; } else guestfs_int_init_error_handler (g); }
guestfs_h * guestfs_create_flags (unsigned flags, ...) { guestfs_h *g; g = calloc (1, sizeof (*g)); if (!g) return NULL; g->state = CONFIG; g->conn = NULL; guestfs_int_init_error_handler (g); g->abort_cb = abort; g->recovery_proc = 1; g->autosync = 1; g->memsize = DEFAULT_MEMSIZE; /* Start with large serial numbers so they are easy to spot * inside the protocol. */ g->msg_next_serial = 0x00123400; /* Default is uniprocessor appliance. */ g->smp = 1; g->path = strdup (GUESTFS_DEFAULT_PATH); if (!g->path) goto error; #ifdef QEMU g->hv = strdup (QEMU); #else /* configure --without-qemu, so set QEMU to something which will * definitely fail. The user is expected to override the hypervisor * by setting an environment variable or calling set_hv. */ g->hv = strdup ("false"); #endif if (!g->hv) goto error; /* Get program name. */ #if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME == 1 if (STRPREFIX (program_invocation_short_name, "lt-")) /* Remove libtool (lt-*) prefix from short name. */ g->program = strdup (program_invocation_short_name + 3); else g->program = strdup (program_invocation_short_name); #else g->program = strdup (""); #endif if (!g->program) goto error; g->identifier = strdup (""); if (!g->identifier) goto error; if (guestfs_int_set_backend (g, DEFAULT_BACKEND) == -1) { warning (g, _("libguestfs was built with an invalid default backend, using 'direct' instead")); if (guestfs_int_set_backend (g, "direct") == -1) { warning (g, _("'direct' backend does not work")); goto error; } } if (!(flags & GUESTFS_CREATE_NO_ENVIRONMENT)) ignore_value (guestfs_parse_environment (g)); if (!(flags & GUESTFS_CREATE_NO_CLOSE_ON_EXIT)) { g->close_on_exit = true; /* Link the handles onto a global list. */ gl_lock_lock (handles_lock); g->next = handles; handles = g; if (!atexit_handler_set) { atexit (close_handles); atexit_handler_set = 1; } gl_lock_unlock (handles_lock); } debug (g, "create: flags = %u, handle = %p, program = %s", flags, g, g->program); return g; error: guestfs_int_free_string_list (g->backend_settings); free (g->backend); free (g->identifier); free (g->program); free (g->path); free (g->hv); free (g->append); free (g); return NULL; }