/* * storage_driver.c: core driver for storage APIs * * Copyright (C) 2006-2015 Red Hat, Inc. * Copyright (C) 2006-2008 Daniel P. Berrange * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see * . */ #include #include #include #include #include #include #if WITH_PWD_H # include #endif #include "virerror.h" #include "datatypes.h" #include "driver.h" #include "storage_driver.h" #include "storage_capabilities.h" #include "storage_conf.h" #include "storage_event.h" #include "viralloc.h" #include "storage_backend.h" #include "virlog.h" #include "virfile.h" #include "virfdstream.h" #include "virpidfile.h" #include "configmake.h" #include "virsecret.h" #include "virstring.h" #include "viraccessapicheck.h" #include "storage_util.h" #include "virutil.h" #define VIR_FROM_THIS VIR_FROM_STORAGE VIR_LOG_INIT("storage.storage_driver"); static virStorageDriverStatePtr driver; static int storageStateCleanup(void); typedef struct _virStorageVolStreamInfo virStorageVolStreamInfo; typedef virStorageVolStreamInfo *virStorageVolStreamInfoPtr; struct _virStorageVolStreamInfo { char *pool_name; char *vol_path; }; static void storageDriverLock(void) { virMutexLock(&driver->lock); } static void storageDriverUnlock(void) { virMutexUnlock(&driver->lock); } static void storagePoolRefreshFailCleanup(virStorageBackendPtr backend, virStoragePoolObjPtr obj, const char *stateFile) { virErrorPtr orig_err; virErrorPreserveLast(&orig_err); virStoragePoolObjClearVols(obj); if (stateFile) unlink(stateFile); if (backend->stopPool) backend->stopPool(obj); virErrorRestore(&orig_err); } static int storagePoolRefreshImpl(virStorageBackendPtr backend, virStoragePoolObjPtr obj, const char *stateFile) { virStoragePoolObjClearVols(obj); if (backend->refreshPool(obj) < 0) { storagePoolRefreshFailCleanup(backend, obj, stateFile); return -1; } return 0; } /** * virStoragePoolUpdateInactive: * @obj: pool object * * This function is supposed to be called after a pool becomes inactive. The * function switches to the new config object for persistent pools. Inactive * pools are removed. */ static void virStoragePoolUpdateInactive(virStoragePoolObjPtr obj) { if (!virStoragePoolObjGetConfigFile(obj)) { virStoragePoolObjRemove(driver->pools, obj); } else if (virStoragePoolObjGetNewDef(obj)) { virStoragePoolObjDefUseNewDef(obj); } } static void storagePoolUpdateStateCallback(virStoragePoolObjPtr obj, const void *opaque G_GNUC_UNUSED) { virStoragePoolDefPtr def = virStoragePoolObjGetDef(obj); bool active = false; virStorageBackendPtr backend; g_autofree char *stateFile = NULL; if ((backend = virStorageBackendForType(def->type)) == NULL) { virReportError(VIR_ERR_INTERNAL_ERROR, _("Missing backend %d"), def->type); return; } if (!(stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml"))) return; /* Backends which do not support 'checkPool' are considered * inactive by default. */ if (backend->checkPool && backend->checkPool(obj, &active) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("Failed to initialize storage pool '%s': %s"), def->name, virGetLastErrorMessage()); unlink(stateFile); active = false; } /* We can pass NULL as connection, most backends do not use * it anyway, but if they do and fail, we want to log error and * continue with other pools. */ if (active && storagePoolRefreshImpl(backend, obj, stateFile) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("Failed to restart storage pool '%s': %s"), def->name, virGetLastErrorMessage()); active = false; } virStoragePoolObjSetActive(obj, active); if (!virStoragePoolObjIsActive(obj)) virStoragePoolUpdateInactive(obj); return; } static void storagePoolUpdateAllState(void) { virStoragePoolObjListForEach(driver->pools, storagePoolUpdateStateCallback, NULL); } static void storageDriverAutostartCallback(virStoragePoolObjPtr obj, const void *opaque G_GNUC_UNUSED) { virStoragePoolDefPtr def = virStoragePoolObjGetDef(obj); virStorageBackendPtr backend; bool started = false; if (!(backend = virStorageBackendForType(def->type))) return; if (virStoragePoolObjIsAutostart(obj) && !virStoragePoolObjIsActive(obj)) { virStoragePoolObjSetStarting(obj, true); if (backend->startPool && backend->startPool(obj) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("Failed to autostart storage pool '%s': %s"), def->name, virGetLastErrorMessage()); goto cleanup; } started = true; } if (started) { g_autofree char *stateFile = NULL; stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml"); if (!stateFile || virStoragePoolSaveState(stateFile, def) < 0 || storagePoolRefreshImpl(backend, obj, stateFile) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("Failed to autostart storage pool '%s': %s"), def->name, virGetLastErrorMessage()); } else { virStoragePoolObjSetActive(obj, true); } } cleanup: if (virStoragePoolObjIsStarting(obj)) { if (!virStoragePoolObjIsActive(obj)) virStoragePoolUpdateInactive(obj); virStoragePoolObjSetStarting(obj, false); } } static void storageDriverAutostart(void) { virStoragePoolObjListForEach(driver->pools, storageDriverAutostartCallback, NULL); } /** * virStorageStartup: * * Initialization function for the Storage Driver */ static int storageStateInitialize(bool privileged, const char *root, virStateInhibitCallback callback G_GNUC_UNUSED, void *opaque G_GNUC_UNUSED) { g_autofree char *configdir = NULL; g_autofree char *rundir = NULL; bool autostart = true; if (root != NULL) { virReportError(VIR_ERR_INVALID_ARG, "%s", _("Driver does not support embedded mode")); return -1; } driver = g_new0(virStorageDriverState, 1); driver->lockFD = -1; if (virMutexInit(&driver->lock) < 0) { VIR_FREE(driver); return VIR_DRV_STATE_INIT_ERROR; } storageDriverLock(); if (!(driver->pools = virStoragePoolObjListNew())) goto error; if (privileged) { driver->configDir = g_strdup(SYSCONFDIR "/libvirt/storage"); driver->autostartDir = g_strdup(SYSCONFDIR "/libvirt/storage/autostart"); driver->stateDir = g_strdup(RUNSTATEDIR "/libvirt/storage"); } else { configdir = virGetUserConfigDirectory(); rundir = virGetUserRuntimeDirectory(); driver->configDir = g_strdup_printf("%s/storage", configdir); driver->autostartDir = g_strdup_printf("%s/storage/autostart", configdir); driver->stateDir = g_strdup_printf("%s/storage/run", rundir); } driver->privileged = privileged; if (virFileMakePath(driver->stateDir) < 0) { virReportError(errno, _("cannot create directory %s"), driver->stateDir); goto error; } if ((driver->lockFD = virPidFileAcquire(driver->stateDir, "driver", false, getpid())) < 0) goto error; if (virStoragePoolObjLoadAllState(driver->pools, driver->stateDir) < 0) goto error; if (virStoragePoolObjLoadAllConfigs(driver->pools, driver->configDir, driver->autostartDir) < 0) goto error; storagePoolUpdateAllState(); if (virDriverShouldAutostart(driver->stateDir, &autostart) < 0) goto error; if (autostart) storageDriverAutostart(); driver->storageEventState = virObjectEventStateNew(); /* Only one load of storage driver plus backends exists. Unlike * domains where new binaries could change the capabilities. A * new/changed backend requires a reinitialization. */ if (!(driver->caps = virStorageBackendGetCapabilities())) goto error; storageDriverUnlock(); return VIR_DRV_STATE_INIT_COMPLETE; error: storageDriverUnlock(); storageStateCleanup(); return VIR_DRV_STATE_INIT_ERROR; } /** * storageStateReload: * * Function to restart the storage driver, it will recheck the configuration * files and update its state */ static int storageStateReload(void) { if (!driver) return -1; storageDriverLock(); virStoragePoolObjLoadAllState(driver->pools, driver->stateDir); virStoragePoolObjLoadAllConfigs(driver->pools, driver->configDir, driver->autostartDir); storageDriverAutostart(); storageDriverUnlock(); return 0; } /** * storageStateCleanup * * Shutdown the storage driver, it will stop all active storage pools */ static int storageStateCleanup(void) { if (!driver) return -1; storageDriverLock(); virObjectUnref(driver->caps); virObjectUnref(driver->storageEventState); /* free inactive pools */ virObjectUnref(driver->pools); if (driver->lockFD != -1) virPidFileRelease(driver->stateDir, "driver", driver->lockFD); VIR_FREE(driver->configDir); VIR_FREE(driver->autostartDir); VIR_FREE(driver->stateDir); storageDriverUnlock(); virMutexDestroy(&driver->lock); VIR_FREE(driver); return 0; } static virDrvOpenStatus storageConnectOpen(virConnectPtr conn, virConnectAuthPtr auth G_GNUC_UNUSED, virConfPtr conf G_GNUC_UNUSED, unsigned int flags) { virCheckFlags(VIR_CONNECT_RO, VIR_DRV_OPEN_ERROR); if (driver == NULL) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("storage state driver is not active")); return VIR_DRV_OPEN_ERROR; } if (!virConnectValidateURIPath(conn->uri->path, "storage", driver->privileged)) return VIR_DRV_OPEN_ERROR; if (virConnectOpenEnsureACL(conn) < 0) return VIR_DRV_OPEN_ERROR; return VIR_DRV_OPEN_SUCCESS; } static int storageConnectClose(virConnectPtr conn G_GNUC_UNUSED) { return 0; } static int storageConnectIsSecure(virConnectPtr conn G_GNUC_UNUSED) { /* Trivially secure, since always inside the daemon */ return 1; } static int storageConnectIsEncrypted(virConnectPtr conn G_GNUC_UNUSED) { /* Not encrypted, but remote driver takes care of that */ return 0; } static int storageConnectIsAlive(virConnectPtr conn G_GNUC_UNUSED) { return 1; } static virStoragePoolObjPtr storagePoolObjFindByUUID(const unsigned char *uuid, const char *name) { virStoragePoolObjPtr obj; char uuidstr[VIR_UUID_STRING_BUFLEN]; if (!(obj = virStoragePoolObjFindByUUID(driver->pools, uuid))) { virUUIDFormat(uuid, uuidstr); if (name) virReportError(VIR_ERR_NO_STORAGE_POOL, _("no storage pool with matching uuid '%s' (%s)"), uuidstr, name); else virReportError(VIR_ERR_NO_STORAGE_POOL, _("no storage pool with matching uuid '%s'"), uuidstr); } return obj; } static virStoragePoolObjPtr virStoragePoolObjFromStoragePool(virStoragePoolPtr pool) { return storagePoolObjFindByUUID(pool->uuid, pool->name); } static virStoragePoolObjPtr storagePoolObjFindByName(const char *name) { virStoragePoolObjPtr obj; if (!(obj = virStoragePoolObjFindByName(driver->pools, name))) virReportError(VIR_ERR_NO_STORAGE_POOL, _("no storage pool with matching name '%s'"), name); return obj; } static virStoragePoolPtr storagePoolLookupByUUID(virConnectPtr conn, const unsigned char *uuid) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStoragePoolPtr pool = NULL; obj = storagePoolObjFindByUUID(uuid, NULL); if (!obj) return NULL; def = virStoragePoolObjGetDef(obj); if (virStoragePoolLookupByUUIDEnsureACL(conn, def) < 0) goto cleanup; pool = virGetStoragePool(conn, def->name, def->uuid, NULL, NULL); cleanup: virStoragePoolObjEndAPI(&obj); return pool; } static virStoragePoolPtr storagePoolLookupByName(virConnectPtr conn, const char *name) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStoragePoolPtr pool = NULL; if (!(obj = storagePoolObjFindByName(name))) return NULL; def = virStoragePoolObjGetDef(obj); if (virStoragePoolLookupByNameEnsureACL(conn, def) < 0) goto cleanup; pool = virGetStoragePool(conn, def->name, def->uuid, NULL, NULL); cleanup: virStoragePoolObjEndAPI(&obj); return pool; } static virStoragePoolPtr storagePoolLookupByVolume(virStorageVolPtr vol) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStoragePoolPtr pool = NULL; if (!(obj = storagePoolObjFindByName(vol->pool))) return NULL; def = virStoragePoolObjGetDef(obj); if (virStoragePoolLookupByVolumeEnsureACL(vol->conn, def) < 0) goto cleanup; pool = virGetStoragePool(vol->conn, def->name, def->uuid, NULL, NULL); cleanup: virStoragePoolObjEndAPI(&obj); return pool; } static int storageConnectNumOfStoragePools(virConnectPtr conn) { if (virConnectNumOfStoragePoolsEnsureACL(conn) < 0) return -1; return virStoragePoolObjNumOfStoragePools(driver->pools, conn, true, virConnectNumOfStoragePoolsCheckACL); } static int storageConnectListStoragePools(virConnectPtr conn, char **const names, int maxnames) { if (virConnectListStoragePoolsEnsureACL(conn) < 0) return -1; return virStoragePoolObjGetNames(driver->pools, conn, true, virConnectListStoragePoolsCheckACL, names, maxnames); } static char * storageConnectGetCapabilities(virConnectPtr conn) { if (virConnectGetCapabilitiesEnsureACL(conn) < 0) return NULL; return virCapabilitiesFormatXML(driver->caps); } static int storageConnectNumOfDefinedStoragePools(virConnectPtr conn) { if (virConnectNumOfDefinedStoragePoolsEnsureACL(conn) < 0) return -1; return virStoragePoolObjNumOfStoragePools(driver->pools, conn, false, virConnectNumOfDefinedStoragePoolsCheckACL); } static int storageConnectListDefinedStoragePools(virConnectPtr conn, char **const names, int maxnames) { if (virConnectListDefinedStoragePoolsEnsureACL(conn) < 0) return -1; return virStoragePoolObjGetNames(driver->pools, conn, false, virConnectListDefinedStoragePoolsCheckACL, names, maxnames); } /* This method is required to be re-entrant / thread safe, so uses no driver lock */ static char * storageConnectFindStoragePoolSources(virConnectPtr conn, const char *type, const char *srcSpec, unsigned int flags) { int backend_type; virStorageBackendPtr backend; if (virConnectFindStoragePoolSourcesEnsureACL(conn) < 0) return NULL; backend_type = virStoragePoolTypeFromString(type); if (backend_type < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("unknown storage pool type %s"), type); return NULL; } backend = virStorageBackendForType(backend_type); if (backend == NULL) return NULL; if (!backend->findPoolSources) { virReportError(VIR_ERR_NO_SUPPORT, _("pool type '%s' does not support source " "discovery"), type); return NULL; } return backend->findPoolSources(srcSpec, flags); } static char * storageConnectGetStoragePoolCapabilities(virConnectPtr conn, unsigned int flags) { virStoragePoolCapsPtr caps = NULL; char *ret; virCheckFlags(0, NULL); if (virConnectGetStoragePoolCapabilitiesEnsureACL(conn) < 0) return NULL; if (!(caps = virStoragePoolCapsNew(driver->caps))) return NULL; ret = virStoragePoolCapsFormat(caps); virObjectUnref(caps); return ret; } static int storagePoolIsActive(virStoragePoolPtr pool) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; int ret = -1; if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; def = virStoragePoolObjGetDef(obj); if (virStoragePoolIsActiveEnsureACL(pool->conn, def) < 0) goto cleanup; ret = virStoragePoolObjIsActive(obj); cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolIsPersistent(virStoragePoolPtr pool) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; int ret = -1; if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; def = virStoragePoolObjGetDef(obj); if (virStoragePoolIsPersistentEnsureACL(pool->conn, def) < 0) goto cleanup; ret = virStoragePoolObjGetConfigFile(obj) ? 1 : 0; cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static virStoragePoolPtr storagePoolCreateXML(virConnectPtr conn, const char *xml, unsigned int flags) { virStoragePoolObjPtr obj = NULL; virStoragePoolDefPtr def; virStoragePoolPtr pool = NULL; virStorageBackendPtr backend; virObjectEventPtr event = NULL; unsigned int build_flags = 0; g_autoptr(virStoragePoolDef) newDef = NULL; g_autofree char *stateFile = NULL; virCheckFlags(VIR_STORAGE_POOL_CREATE_WITH_BUILD | VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE | VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE, NULL); VIR_EXCLUSIVE_FLAGS_RET(VIR_STORAGE_POOL_BUILD_OVERWRITE, VIR_STORAGE_POOL_BUILD_NO_OVERWRITE, NULL); if (!(newDef = virStoragePoolDefParseString(xml))) goto cleanup; if (virStoragePoolCreateXMLEnsureACL(conn, newDef) < 0) goto cleanup; if ((backend = virStorageBackendForType(newDef->type)) == NULL) goto cleanup; if (!(obj = virStoragePoolObjListAdd(driver->pools, newDef, VIR_STORAGE_POOL_OBJ_LIST_ADD_LIVE | VIR_STORAGE_POOL_OBJ_LIST_ADD_CHECK_LIVE))) goto cleanup; newDef = NULL; def = virStoragePoolObjGetDef(obj); virStoragePoolObjSetStarting(obj, true); if (backend->buildPool) { if (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE) build_flags |= VIR_STORAGE_POOL_BUILD_OVERWRITE; else if (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE) build_flags |= VIR_STORAGE_POOL_BUILD_NO_OVERWRITE; if (build_flags || (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD)) { if (backend->buildPool(obj, build_flags) < 0) goto error; } } if (backend->startPool && backend->startPool(obj) < 0) goto error; stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml"); if (!stateFile || virStoragePoolSaveState(stateFile, def) < 0 || storagePoolRefreshImpl(backend, obj, stateFile) < 0) { goto error; } event = virStoragePoolEventLifecycleNew(def->name, def->uuid, VIR_STORAGE_POOL_EVENT_STARTED, 0); VIR_INFO("Creating storage pool '%s'", def->name); virStoragePoolObjSetActive(obj, true); pool = virGetStoragePool(conn, def->name, def->uuid, NULL, NULL); cleanup: if (obj && virStoragePoolObjIsStarting(obj)) { if (!virStoragePoolObjIsActive(obj)) virStoragePoolUpdateInactive(obj); virStoragePoolObjSetStarting(obj, false); } virObjectEventStateQueue(driver->storageEventState, event); virStoragePoolObjEndAPI(&obj); return pool; error: virStoragePoolUpdateInactive(obj); goto cleanup; } static virStoragePoolPtr storagePoolDefineXML(virConnectPtr conn, const char *xml, unsigned int flags) { virStoragePoolObjPtr obj = NULL; virStoragePoolDefPtr def; virStoragePoolPtr pool = NULL; virObjectEventPtr event = NULL; g_autoptr(virStoragePoolDef) newDef = NULL; virCheckFlags(0, NULL); if (!(newDef = virStoragePoolDefParseString(xml))) goto cleanup; if (virXMLCheckIllegalChars("name", newDef->name, "\n") < 0) goto cleanup; if (virStoragePoolDefineXMLEnsureACL(conn, newDef) < 0) goto cleanup; if (virStorageBackendForType(newDef->type) == NULL) goto cleanup; if (!(obj = virStoragePoolObjListAdd(driver->pools, newDef, 0))) goto cleanup; newDef = virStoragePoolObjGetNewDef(obj); def = virStoragePoolObjGetDef(obj); if (virStoragePoolObjSaveDef(driver, obj, newDef ? newDef : def) < 0) { virStoragePoolObjRemove(driver->pools, obj); newDef = NULL; goto cleanup; } event = virStoragePoolEventLifecycleNew(def->name, def->uuid, VIR_STORAGE_POOL_EVENT_DEFINED, 0); VIR_INFO("Defining storage pool '%s'", def->name); pool = virGetStoragePool(conn, def->name, def->uuid, NULL, NULL); newDef = NULL; cleanup: virObjectEventStateQueue(driver->storageEventState, event); virStoragePoolObjEndAPI(&obj); return pool; } static int storagePoolUndefine(virStoragePoolPtr pool) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; const char *autostartLink; virObjectEventPtr event = NULL; int ret = -1; if (!(obj = storagePoolObjFindByUUID(pool->uuid, pool->name))) goto cleanup; def = virStoragePoolObjGetDef(obj); if (virStoragePoolUndefineEnsureACL(pool->conn, def) < 0) goto cleanup; if (virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is still active"), def->name); goto cleanup; } if (virStoragePoolObjIsStarting(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is starting up"), def->name); goto cleanup; } if (virStoragePoolObjGetAsyncjobs(obj) > 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("pool '%s' has asynchronous jobs running."), def->name); goto cleanup; } autostartLink = virStoragePoolObjGetAutostartLink(obj); if (virStoragePoolObjDeleteDef(obj) < 0) goto cleanup; if (autostartLink && unlink(autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) { VIR_ERROR(_("Failed to delete autostart link '%s': %s"), autostartLink, g_strerror(errno)); } event = virStoragePoolEventLifecycleNew(def->name, def->uuid, VIR_STORAGE_POOL_EVENT_UNDEFINED, 0); VIR_INFO("Undefining storage pool '%s'", def->name); virStoragePoolObjRemove(driver->pools, obj); ret = 0; cleanup: virObjectEventStateQueue(driver->storageEventState, event); virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolCreate(virStoragePoolPtr pool, unsigned int flags) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStorageBackendPtr backend; virObjectEventPtr event = NULL; int ret = -1; unsigned int build_flags = 0; g_autofree char *stateFile = NULL; bool restoreStarting = false; virCheckFlags(VIR_STORAGE_POOL_CREATE_WITH_BUILD | VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE | VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE, -1); VIR_EXCLUSIVE_FLAGS_RET(VIR_STORAGE_POOL_BUILD_OVERWRITE, VIR_STORAGE_POOL_BUILD_NO_OVERWRITE, -1); if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; def = virStoragePoolObjGetDef(obj); if (virStoragePoolCreateEnsureACL(pool->conn, def) < 0) goto cleanup; if ((backend = virStorageBackendForType(def->type)) == NULL) goto cleanup; if (virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is already active"), def->name); goto cleanup; } if (virStoragePoolObjIsStarting(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is starting up"), def->name); goto cleanup; } virStoragePoolObjSetStarting(obj, true); restoreStarting = true; if (backend->buildPool) { if (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE) build_flags |= VIR_STORAGE_POOL_BUILD_OVERWRITE; else if (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE) build_flags |= VIR_STORAGE_POOL_BUILD_NO_OVERWRITE; if (build_flags || (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD)) { if (backend->buildPool(obj, build_flags) < 0) goto cleanup; } } VIR_INFO("Starting up storage pool '%s'", def->name); if (backend->startPool && backend->startPool(obj) < 0) goto cleanup; stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml"); if (!stateFile || virStoragePoolSaveState(stateFile, def) < 0 || storagePoolRefreshImpl(backend, obj, stateFile) < 0) { goto cleanup; } event = virStoragePoolEventLifecycleNew(def->name, def->uuid, VIR_STORAGE_POOL_EVENT_STARTED, 0); virStoragePoolObjSetActive(obj, true); ret = 0; cleanup: if (restoreStarting && virStoragePoolObjIsStarting(obj)) { if (!virStoragePoolObjIsActive(obj)) virStoragePoolUpdateInactive(obj); virStoragePoolObjSetStarting(obj, false); } virObjectEventStateQueue(driver->storageEventState, event); virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolBuild(virStoragePoolPtr pool, unsigned int flags) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStorageBackendPtr backend; virObjectEventPtr event = NULL; bool restoreStarting = false; int ret = -1; if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; def = virStoragePoolObjGetDef(obj); if (virStoragePoolBuildEnsureACL(pool->conn, def) < 0) goto cleanup; if ((backend = virStorageBackendForType(def->type)) == NULL) goto cleanup; if (virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is already active"), def->name); goto cleanup; } if (virStoragePoolObjIsStarting(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is starting up"), def->name); goto cleanup; } virStoragePoolObjSetStarting(obj, true); restoreStarting = true; if (backend->buildPool && backend->buildPool(obj, flags) < 0) goto cleanup; event = virStoragePoolEventLifecycleNew(def->name, def->uuid, VIR_STORAGE_POOL_EVENT_CREATED, 0); ret = 0; cleanup: if (restoreStarting && virStoragePoolObjIsStarting(obj)) { virStoragePoolUpdateInactive(obj); virStoragePoolObjSetStarting(obj, false); } virObjectEventStateQueue(driver->storageEventState, event); virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolDestroy(virStoragePoolPtr pool) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStorageBackendPtr backend; virObjectEventPtr event = NULL; int ret = -1; g_autofree char *stateFile = NULL; if (!(obj = storagePoolObjFindByUUID(pool->uuid, pool->name))) goto cleanup; def = virStoragePoolObjGetDef(obj); if (virStoragePoolDestroyEnsureACL(pool->conn, def) < 0) goto cleanup; if ((backend = virStorageBackendForType(def->type)) == NULL) goto cleanup; VIR_INFO("Destroying storage pool '%s'", def->name); if (!virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), def->name); goto cleanup; } if (virStoragePoolObjIsStarting(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is starting up"), def->name); goto cleanup; } if (virStoragePoolObjGetAsyncjobs(obj) > 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("pool '%s' has asynchronous jobs running."), def->name); goto cleanup; } if (!(stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml"))) goto cleanup; unlink(stateFile); if (backend->stopPool && backend->stopPool(obj) < 0) goto cleanup; virStoragePoolObjClearVols(obj); event = virStoragePoolEventLifecycleNew(def->name, def->uuid, VIR_STORAGE_POOL_EVENT_STOPPED, 0); virStoragePoolObjSetActive(obj, false); virStoragePoolUpdateInactive(obj); ret = 0; cleanup: virObjectEventStateQueue(driver->storageEventState, event); virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolDelete(virStoragePoolPtr pool, unsigned int flags) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStorageBackendPtr backend; virObjectEventPtr event = NULL; int ret = -1; g_autofree char *stateFile = NULL; if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; def = virStoragePoolObjGetDef(obj); if (virStoragePoolDeleteEnsureACL(pool->conn, def) < 0) goto cleanup; if ((backend = virStorageBackendForType(def->type)) == NULL) goto cleanup; VIR_INFO("Deleting storage pool '%s'", def->name); if (virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is still active"), def->name); goto cleanup; } if (virStoragePoolObjIsStarting(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is starting up"), def->name); goto cleanup; } if (virStoragePoolObjGetAsyncjobs(obj) > 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("pool '%s' has asynchronous jobs running."), def->name); goto cleanup; } if (!(stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml"))) goto cleanup; unlink(stateFile); if (!backend->deletePool) { virReportError(VIR_ERR_NO_SUPPORT, "%s", _("pool does not support pool deletion")); goto cleanup; } if (backend->deletePool(obj, flags) < 0) goto cleanup; event = virStoragePoolEventLifecycleNew(def->name, def->uuid, VIR_STORAGE_POOL_EVENT_DELETED, 0); ret = 0; cleanup: virObjectEventStateQueue(driver->storageEventState, event); virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolRefresh(virStoragePoolPtr pool, unsigned int flags) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStorageBackendPtr backend; g_autofree char *stateFile = NULL; int ret = -1; virObjectEventPtr event = NULL; virCheckFlags(0, -1); if (!(obj = storagePoolObjFindByUUID(pool->uuid, pool->name))) goto cleanup; def = virStoragePoolObjGetDef(obj); if (virStoragePoolRefreshEnsureACL(pool->conn, def) < 0) goto cleanup; if ((backend = virStorageBackendForType(def->type)) == NULL) goto cleanup; if (!virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), def->name); goto cleanup; } if (virStoragePoolObjIsStarting(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is starting up"), def->name); goto cleanup; } if (virStoragePoolObjGetAsyncjobs(obj) > 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("pool '%s' has asynchronous jobs running."), def->name); goto cleanup; } stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml"); if (storagePoolRefreshImpl(backend, obj, stateFile) < 0) { event = virStoragePoolEventLifecycleNew(def->name, def->uuid, VIR_STORAGE_POOL_EVENT_STOPPED, 0); virStoragePoolObjSetActive(obj, false); virStoragePoolUpdateInactive(obj); goto cleanup; } event = virStoragePoolEventRefreshNew(def->name, def->uuid); ret = 0; cleanup: virObjectEventStateQueue(driver->storageEventState, event); virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolGetInfo(virStoragePoolPtr pool, virStoragePoolInfoPtr info) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; int ret = -1; if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; def = virStoragePoolObjGetDef(obj); if (virStoragePoolGetInfoEnsureACL(pool->conn, def) < 0) goto cleanup; if (virStorageBackendForType(def->type) == NULL) goto cleanup; memset(info, 0, sizeof(virStoragePoolInfo)); if (virStoragePoolObjIsActive(obj)) info->state = VIR_STORAGE_POOL_RUNNING; else info->state = VIR_STORAGE_POOL_INACTIVE; info->capacity = def->capacity; info->allocation = def->allocation; info->available = def->available; ret = 0; cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static char * storagePoolGetXMLDesc(virStoragePoolPtr pool, unsigned int flags) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStoragePoolDefPtr newDef; virStoragePoolDefPtr curDef; char *ret = NULL; virCheckFlags(VIR_STORAGE_XML_INACTIVE, NULL); if (!(obj = virStoragePoolObjFromStoragePool(pool))) return NULL; def = virStoragePoolObjGetDef(obj); newDef = virStoragePoolObjGetNewDef(obj); if (virStoragePoolGetXMLDescEnsureACL(pool->conn, def) < 0) goto cleanup; if ((flags & VIR_STORAGE_XML_INACTIVE) && newDef) curDef = newDef; else curDef = def; ret = virStoragePoolDefFormat(curDef); cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolGetAutostart(virStoragePoolPtr pool, int *autostart) { virStoragePoolObjPtr obj; int ret = -1; if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; if (virStoragePoolGetAutostartEnsureACL(pool->conn, virStoragePoolObjGetDef(obj)) < 0) goto cleanup; *autostart = virStoragePoolObjIsAutostart(obj) ? 1 : 0; ret = 0; cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolSetAutostart(virStoragePoolPtr pool, int autostart) { virStoragePoolObjPtr obj; const char *configFile; const char *autostartLink; bool new_autostart; bool cur_autostart; int ret = -1; if (!(obj = storagePoolObjFindByUUID(pool->uuid, pool->name))) goto cleanup; if (virStoragePoolSetAutostartEnsureACL(pool->conn, virStoragePoolObjGetDef(obj)) < 0) goto cleanup; if (!(configFile = virStoragePoolObjGetConfigFile(obj))) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("pool has no config file")); goto cleanup; } autostartLink = virStoragePoolObjGetAutostartLink(obj); new_autostart = (autostart != 0); cur_autostart = virStoragePoolObjIsAutostart(obj); if (cur_autostart != new_autostart) { if (new_autostart) { if (virFileMakePath(driver->autostartDir) < 0) { virReportSystemError(errno, _("cannot create autostart directory %s"), driver->autostartDir); goto cleanup; } if (symlink(configFile, autostartLink) < 0) { virReportSystemError(errno, _("Failed to create symlink '%s' to '%s'"), autostartLink, configFile); goto cleanup; } } else { if (autostartLink && unlink(autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) { virReportSystemError(errno, _("Failed to delete symlink '%s'"), autostartLink); goto cleanup; } } virStoragePoolObjSetAutostart(obj, new_autostart); } ret = 0; cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolNumOfVolumes(virStoragePoolPtr pool) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; int ret = -1; if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; def = virStoragePoolObjGetDef(obj); if (virStoragePoolNumOfVolumesEnsureACL(pool->conn, def) < 0) goto cleanup; if (!virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), def->name); goto cleanup; } ret = virStoragePoolObjNumOfVolumes(obj, pool->conn, virStoragePoolNumOfVolumesCheckACL); cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static int storagePoolListVolumes(virStoragePoolPtr pool, char **const names, int maxnames) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; int n = -1; if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; def = virStoragePoolObjGetDef(obj); if (virStoragePoolListVolumesEnsureACL(pool->conn, def) < 0) goto cleanup; if (!virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), def->name); goto cleanup; } n = virStoragePoolObjVolumeGetNames(obj, pool->conn, virStoragePoolListVolumesCheckACL, names, maxnames); cleanup: virStoragePoolObjEndAPI(&obj); return n; } static int storagePoolListAllVolumes(virStoragePoolPtr pool, virStorageVolPtr **vols, unsigned int flags) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; int ret = -1; virCheckFlags(0, -1); if (!(obj = virStoragePoolObjFromStoragePool(pool))) return -1; def = virStoragePoolObjGetDef(obj); if (virStoragePoolListAllVolumesEnsureACL(pool->conn, def) < 0) goto cleanup; if (!virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), def->name); goto cleanup; } ret = virStoragePoolObjVolumeListExport(pool->conn, obj, vols, virStoragePoolListAllVolumesCheckACL); cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static virStorageVolPtr storageVolLookupByName(virStoragePoolPtr pool, const char *name) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStorageVolDefPtr voldef; virStorageVolPtr vol = NULL; if (!(obj = virStoragePoolObjFromStoragePool(pool))) return NULL; def = virStoragePoolObjGetDef(obj); if (!virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), def->name); goto cleanup; } voldef = virStorageVolDefFindByName(obj, name); if (!voldef) { virReportError(VIR_ERR_NO_STORAGE_VOL, _("no storage vol with matching name '%s'"), name); goto cleanup; } if (virStorageVolLookupByNameEnsureACL(pool->conn, def, voldef) < 0) goto cleanup; vol = virGetStorageVol(pool->conn, def->name, voldef->name, voldef->key, NULL, NULL); cleanup: virStoragePoolObjEndAPI(&obj); return vol; } struct storageVolLookupData { const char *key; char *cleanpath; const char *path; virStorageVolDefPtr voldef; }; static bool storageVolLookupByKeyCallback(virStoragePoolObjPtr obj, const void *opaque) { struct storageVolLookupData *data = (struct storageVolLookupData *)opaque; if (virStoragePoolObjIsActive(obj)) data->voldef = virStorageVolDefFindByKey(obj, data->key); return !!data->voldef; } static virStorageVolPtr storageVolLookupByKey(virConnectPtr conn, const char *key) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; struct storageVolLookupData data = { .key = key, .voldef = NULL }; virStorageVolPtr vol = NULL; if ((obj = virStoragePoolObjListSearch(driver->pools, storageVolLookupByKeyCallback, &data)) && data.voldef) { def = virStoragePoolObjGetDef(obj); if (virStorageVolLookupByKeyEnsureACL(conn, def, data.voldef) == 0) { vol = virGetStorageVol(conn, def->name, data.voldef->name, data.voldef->key, NULL, NULL); } virStoragePoolObjEndAPI(&obj); } if (!vol) virReportError(VIR_ERR_NO_STORAGE_VOL, _("no storage vol with matching key %s"), key); return vol; } static bool storageVolLookupByPathCallback(virStoragePoolObjPtr obj, const void *opaque) { struct storageVolLookupData *data = (struct storageVolLookupData *)opaque; virStoragePoolDefPtr def; g_autofree char *stable_path = NULL; if (!virStoragePoolObjIsActive(obj)) return false; def = virStoragePoolObjGetDef(obj); switch ((virStoragePoolType)def->type) { case VIR_STORAGE_POOL_DIR: case VIR_STORAGE_POOL_FS: case VIR_STORAGE_POOL_NETFS: case VIR_STORAGE_POOL_LOGICAL: case VIR_STORAGE_POOL_DISK: case VIR_STORAGE_POOL_ISCSI: case VIR_STORAGE_POOL_ISCSI_DIRECT: case VIR_STORAGE_POOL_SCSI: case VIR_STORAGE_POOL_MPATH: case VIR_STORAGE_POOL_VSTORAGE: stable_path = virStorageBackendStablePath(obj, data->cleanpath, false); break; case VIR_STORAGE_POOL_GLUSTER: case VIR_STORAGE_POOL_RBD: case VIR_STORAGE_POOL_SHEEPDOG: case VIR_STORAGE_POOL_ZFS: case VIR_STORAGE_POOL_LAST: stable_path = g_strdup(data->path); break; } /* Don't break the whole lookup process if it fails on * getting the stable path for some of the pools. */ if (!stable_path) { VIR_WARN("Failed to get stable path for pool '%s'", def->name); return false; } data->voldef = virStorageVolDefFindByPath(obj, stable_path); return !!data->voldef; } static virStorageVolPtr storageVolLookupByPath(virConnectPtr conn, const char *path) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; struct storageVolLookupData data = { .path = path, .voldef = NULL }; virStorageVolPtr vol = NULL; if (!(data.cleanpath = virFileSanitizePath(path))) return NULL; if ((obj = virStoragePoolObjListSearch(driver->pools, storageVolLookupByPathCallback, &data)) && data.voldef) { def = virStoragePoolObjGetDef(obj); if (virStorageVolLookupByPathEnsureACL(conn, def, data.voldef) == 0) { vol = virGetStorageVol(conn, def->name, data.voldef->name, data.voldef->key, NULL, NULL); } virStoragePoolObjEndAPI(&obj); } if (!vol) { if (STREQ(path, data.cleanpath)) { virReportError(VIR_ERR_NO_STORAGE_VOL, _("no storage vol with matching path '%s'"), path); } else { virReportError(VIR_ERR_NO_STORAGE_VOL, _("no storage vol with matching path '%s' (%s)"), path, data.cleanpath); } } VIR_FREE(data.cleanpath); return vol; } static bool storagePoolLookupByTargetPathCallback(virStoragePoolObjPtr obj, const void *opaque) { const char *path = opaque; virStoragePoolDefPtr def; if (!virStoragePoolObjIsActive(obj)) return false; def = virStoragePoolObjGetDef(obj); return STREQ_NULLABLE(path, def->target.path); } virStoragePoolPtr storagePoolLookupByTargetPath(virConnectPtr conn, const char *path) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStoragePoolPtr pool = NULL; g_autofree char *cleanpath = NULL; cleanpath = virFileSanitizePath(path); if (!cleanpath) return NULL; if ((obj = virStoragePoolObjListSearch(driver->pools, storagePoolLookupByTargetPathCallback, cleanpath))) { def = virStoragePoolObjGetDef(obj); if (virStoragePoolLookupByTargetPathEnsureACL(conn, def) < 0) return NULL; pool = virGetStoragePool(conn, def->name, def->uuid, NULL, NULL); virStoragePoolObjEndAPI(&obj); } if (!pool) { if (STREQ(path, cleanpath)) { virReportError(VIR_ERR_NO_STORAGE_POOL, _("no storage pool with matching target path '%s'"), path); } else { virReportError(VIR_ERR_NO_STORAGE_POOL, _("no storage pool with matching target path '%s' (%s)"), path, cleanpath); } } return pool; } static int storageVolDeleteInternal(virStorageBackendPtr backend, virStoragePoolObjPtr obj, virStorageVolDefPtr voldef, unsigned int flags, bool updateMeta) { virStoragePoolDefPtr def = virStoragePoolObjGetDef(obj); if (!backend->deleteVol) { virReportError(VIR_ERR_NO_SUPPORT, "%s", _("storage pool does not support vol deletion")); return -1; } if (backend->deleteVol(obj, voldef, flags) < 0) return -1; /* The disk backend updated the pool data including removing the * voldef from the pool (for both the deleteVol and the createVol * failure path. */ if (def->type == VIR_STORAGE_POOL_DISK) return 0; /* Update pool metadata - don't update meta data from error paths * in this module since the allocation/available weren't adjusted yet. * Ignore the disk backend since it updates the pool values. */ if (updateMeta) { def->allocation -= voldef->target.allocation; def->available += voldef->target.allocation; } virStoragePoolObjRemoveVol(obj, voldef); return 0; } static virStorageVolDefPtr virStorageVolDefFromVol(virStorageVolPtr vol, virStoragePoolObjPtr *obj, virStorageBackendPtr *backend) { virStorageVolDefPtr voldef = NULL; virStoragePoolDefPtr def; if (!(*obj = storagePoolObjFindByName(vol->pool))) return NULL; def = virStoragePoolObjGetDef(*obj); if (!virStoragePoolObjIsActive(*obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), def->name); goto error; } if (!(voldef = virStorageVolDefFindByName(*obj, vol->name))) { virReportError(VIR_ERR_NO_STORAGE_VOL, _("no storage vol with matching name '%s'"), vol->name); goto error; } if (backend) { if (!(*backend = virStorageBackendForType(def->type))) goto error; } return voldef; error: virStoragePoolObjEndAPI(obj); return NULL; } static int storageVolDelete(virStorageVolPtr vol, unsigned int flags) { virStoragePoolObjPtr obj; virStorageBackendPtr backend; virStorageVolDefPtr voldef = NULL; int ret = -1; if (!(voldef = virStorageVolDefFromVol(vol, &obj, &backend))) return -1; if (virStorageVolDeleteEnsureACL(vol->conn, virStoragePoolObjGetDef(obj), voldef) < 0) goto cleanup; if (voldef->in_use) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still in use."), voldef->name); goto cleanup; } if (voldef->building) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still being allocated."), voldef->name); goto cleanup; } if (storageVolDeleteInternal(backend, obj, voldef, flags, true) < 0) goto cleanup; ret = 0; cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static virStorageVolPtr storageVolCreateXML(virStoragePoolPtr pool, const char *xmldesc, unsigned int flags) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStorageBackendPtr backend; virStorageVolPtr vol = NULL, newvol = NULL; g_autoptr(virStorageVolDef) voldef = NULL; virCheckFlags(VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA, NULL); if (!(obj = virStoragePoolObjFromStoragePool(pool))) return NULL; def = virStoragePoolObjGetDef(obj); if (!virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), def->name); goto cleanup; } if ((backend = virStorageBackendForType(def->type)) == NULL) goto cleanup; voldef = virStorageVolDefParseString(def, xmldesc, VIR_VOL_XML_PARSE_OPT_CAPACITY); if (voldef == NULL) goto cleanup; if (!voldef->target.capacity && !backend->buildVol) { virReportError(VIR_ERR_NO_SUPPORT, "%s", _("volume capacity required for this " "storage pool")); goto cleanup; } if (virStorageVolCreateXMLEnsureACL(pool->conn, def, voldef) < 0) goto cleanup; if (virStorageVolDefFindByName(obj, voldef->name)) { virReportError(VIR_ERR_STORAGE_VOL_EXIST, _("'%s'"), voldef->name); goto cleanup; } if (!backend->createVol) { virReportError(VIR_ERR_NO_SUPPORT, "%s", _("storage pool does not support volume " "creation")); goto cleanup; } /* Wipe any key the user may have suggested, as volume creation * will generate the canonical key. */ VIR_FREE(voldef->key); if (backend->createVol(obj, voldef) < 0) goto cleanup; if (!(newvol = virGetStorageVol(pool->conn, def->name, voldef->name, voldef->key, NULL, NULL))) goto cleanup; /* NB: Upon success voldef "owned" by storage pool for deletion purposes */ if (virStoragePoolObjAddVol(obj, voldef) < 0) goto cleanup; if (backend->buildVol) { int buildret; virStorageVolDefPtr buildvoldef = NULL; buildvoldef = g_new0(virStorageVolDef, 1); /* Make a shallow copy of the 'defined' volume definition, since the * original allocation value will change as the user polls 'info', * but we only need the initial requested values */ memcpy(buildvoldef, voldef, sizeof(*voldef)); /* Drop the pool lock during volume allocation */ virStoragePoolObjIncrAsyncjobs(obj); voldef->building = true; virObjectUnlock(obj); buildret = backend->buildVol(obj, buildvoldef, flags); VIR_FREE(buildvoldef); virObjectLock(obj); voldef->building = false; virStoragePoolObjDecrAsyncjobs(obj); if (buildret < 0) { /* buildVol handles deleting volume on failure */ virStoragePoolObjRemoveVol(obj, voldef); voldef = NULL; goto cleanup; } } if (backend->refreshVol && backend->refreshVol(obj, voldef) < 0) { storageVolDeleteInternal(backend, obj, voldef, 0, false); voldef = NULL; goto cleanup; } /* Update pool metadata ignoring the disk backend since * it updates the pool values. */ if (def->type != VIR_STORAGE_POOL_DISK) { def->allocation += voldef->target.allocation; def->available -= voldef->target.allocation; } VIR_INFO("Creating volume '%s' in storage pool '%s'", newvol->name, def->name); vol = g_steal_pointer(&newvol); voldef = NULL; cleanup: virObjectUnref(newvol); virStoragePoolObjEndAPI(&obj); return vol; } static virStorageVolPtr storageVolCreateXMLFrom(virStoragePoolPtr pool, const char *xmldesc, virStorageVolPtr volsrc, unsigned int flags) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStoragePoolObjPtr objsrc = NULL; virStorageBackendPtr backend; virStorageVolDefPtr voldefsrc = NULL; virStorageVolDefPtr shadowvol = NULL; virStorageVolPtr newvol = NULL; virStorageVolPtr vol = NULL; int buildret; g_autoptr(virStorageVolDef) voldef = NULL; virCheckFlags(VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA | VIR_STORAGE_VOL_CREATE_REFLINK, NULL); obj = virStoragePoolObjFindByUUID(driver->pools, pool->uuid); if (obj && STRNEQ(pool->name, volsrc->pool)) { virObjectUnlock(obj); objsrc = virStoragePoolObjFindByName(driver->pools, volsrc->pool); virObjectLock(obj); } if (!obj) { char uuidstr[VIR_UUID_STRING_BUFLEN]; virUUIDFormat(pool->uuid, uuidstr); virReportError(VIR_ERR_NO_STORAGE_POOL, _("no storage pool with matching uuid '%s' (%s)"), uuidstr, pool->name); goto cleanup; } def = virStoragePoolObjGetDef(obj); if (STRNEQ(pool->name, volsrc->pool) && !objsrc) { virReportError(VIR_ERR_NO_STORAGE_POOL, _("no storage pool with matching name '%s'"), volsrc->pool); goto cleanup; } if (!virStoragePoolObjIsActive(obj)) { virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), def->name); goto cleanup; } if (objsrc && !virStoragePoolObjIsActive(objsrc)) { virStoragePoolDefPtr objsrcdef = virStoragePoolObjGetDef(objsrc); virReportError(VIR_ERR_OPERATION_INVALID, _("storage pool '%s' is not active"), objsrcdef->name); goto cleanup; } if ((backend = virStorageBackendForType(def->type)) == NULL) goto cleanup; voldefsrc = virStorageVolDefFindByName(objsrc ? objsrc : obj, volsrc->name); if (!voldefsrc) { virReportError(VIR_ERR_NO_STORAGE_VOL, _("no storage vol with matching name '%s'"), volsrc->name); goto cleanup; } voldef = virStorageVolDefParseString(def, xmldesc, VIR_VOL_XML_PARSE_NO_CAPACITY); if (voldef == NULL) goto cleanup; if (virStorageVolCreateXMLFromEnsureACL(pool->conn, def, voldef) < 0) goto cleanup; if (virStorageVolDefFindByName(obj, voldef->name)) { virReportError(VIR_ERR_INTERNAL_ERROR, _("storage volume name '%s' already in use."), voldef->name); goto cleanup; } /* Use the original volume's capacity in case the new capacity * is less than that, or it was omitted */ if (voldef->target.capacity < voldefsrc->target.capacity) voldef->target.capacity = voldefsrc->target.capacity; /* If the allocation was not provided in the XML, then use capacity * as it's specifically documented "If omitted when creating a volume, * the volume will be fully allocated at time of creation.". This * is especially important for logical volume creation. */ if (!voldef->target.has_allocation) voldef->target.allocation = voldef->target.capacity; if (!backend->buildVolFrom) { virReportError(VIR_ERR_NO_SUPPORT, "%s", _("storage pool does not support" " volume creation from an existing volume")); goto cleanup; } if (voldefsrc->building) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still being allocated."), voldefsrc->name); goto cleanup; } if (backend->refreshVol && backend->refreshVol(obj, voldefsrc) < 0) goto cleanup; /* 'Define' the new volume so we get async progress reporting. * Wipe any key the user may have suggested, as volume creation * will generate the canonical key. */ VIR_FREE(voldef->key); if (backend->createVol(obj, voldef) < 0) goto cleanup; /* Make a shallow copy of the 'defined' volume definition, since the * original allocation value will change as the user polls 'info', * but we only need the initial requested values */ shadowvol = g_new0(virStorageVolDef, 1); memcpy(shadowvol, voldef, sizeof(*voldef)); if (!(newvol = virGetStorageVol(pool->conn, def->name, voldef->name, voldef->key, NULL, NULL))) goto cleanup; /* NB: Upon success voldef "owned" by storage pool for deletion purposes */ if (virStoragePoolObjAddVol(obj, voldef) < 0) goto cleanup; /* Drop the pool lock during volume allocation */ virStoragePoolObjIncrAsyncjobs(obj); voldef->building = true; voldefsrc->in_use++; virObjectUnlock(obj); if (objsrc) { virStoragePoolObjIncrAsyncjobs(objsrc); virObjectUnlock(objsrc); } buildret = backend->buildVolFrom(obj, shadowvol, voldefsrc, flags); virObjectLock(obj); if (objsrc) virObjectLock(objsrc); voldefsrc->in_use--; voldef->building = false; virStoragePoolObjDecrAsyncjobs(obj); if (objsrc) { virStoragePoolObjDecrAsyncjobs(objsrc); virStoragePoolObjEndAPI(&objsrc); } if (buildret < 0 || (backend->refreshVol && backend->refreshVol(obj, voldef) < 0)) { storageVolDeleteInternal(backend, obj, voldef, 0, false); voldef = NULL; goto cleanup; } /* Updating pool metadata ignoring the disk backend since * it updates the pool values */ if (def->type != VIR_STORAGE_POOL_DISK) { def->allocation += voldef->target.allocation; def->available -= voldef->target.allocation; } VIR_INFO("Creating volume '%s' in storage pool '%s'", newvol->name, def->name); vol = g_steal_pointer(&newvol); voldef = NULL; cleanup: virObjectUnref(newvol); VIR_FREE(shadowvol); virStoragePoolObjEndAPI(&obj); virStoragePoolObjEndAPI(&objsrc); return vol; } static int storageVolDownload(virStorageVolPtr vol, virStreamPtr stream, unsigned long long offset, unsigned long long length, unsigned int flags) { virStorageBackendPtr backend; virStoragePoolObjPtr obj = NULL; virStorageVolDefPtr voldef = NULL; int ret = -1; virCheckFlags(VIR_STORAGE_VOL_DOWNLOAD_SPARSE_STREAM, -1); if (!(voldef = virStorageVolDefFromVol(vol, &obj, &backend))) return -1; if (virStorageVolDownloadEnsureACL(vol->conn, virStoragePoolObjGetDef(obj), voldef) < 0) goto cleanup; if (voldef->building) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still being allocated."), voldef->name); goto cleanup; } if (!backend->downloadVol) { virReportError(VIR_ERR_NO_SUPPORT, "%s", _("storage pool doesn't support volume download")); goto cleanup; } virStoragePoolObjIncrAsyncjobs(obj); voldef->in_use++; virObjectUnlock(obj); ret = backend->downloadVol(obj, voldef, stream, offset, length, flags); virObjectLock(obj); voldef->in_use--; virStoragePoolObjDecrAsyncjobs(obj); cleanup: virStoragePoolObjEndAPI(&obj); return ret; } /** * Frees opaque data. * * @opaque Data to be freed. */ static void virStorageVolPoolRefreshDataFree(void *opaque) { virStorageVolStreamInfoPtr cbdata = opaque; g_free(cbdata->pool_name); g_free(cbdata); } static int virStorageBackendPloopRestoreDesc(char *path) { g_autoptr(virCommand) cmd = NULL; g_autofree char *refresh_tool = NULL; g_autofree char *desc = NULL; desc = g_strdup_printf("%s/DiskDescriptor.xml", path); if (virFileRemove(desc, 0, 0) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("refresh ploop failed:" " unable to delete DiskDescriptor.xml")); return -1; } refresh_tool = virFindFileInPath("ploop"); if (!refresh_tool) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("unable to find ploop, please install ploop tools")); return -1; } cmd = virCommandNewArgList(refresh_tool, "restore-descriptor", path, NULL); virCommandAddArgFormat(cmd, "%s/root.hds", path); return virCommandRun(cmd, NULL); } /** * Thread to handle the pool refresh * * @st Pointer to stream being closed. * @opaque Domain's device information structure. */ static void virStorageVolPoolRefreshThread(void *opaque) { virStorageVolStreamInfoPtr cbdata = opaque; virStoragePoolObjPtr obj = NULL; virStoragePoolDefPtr def; virStorageBackendPtr backend; virObjectEventPtr event = NULL; if (cbdata->vol_path) { if (virStorageBackendPloopRestoreDesc(cbdata->vol_path) < 0) goto cleanup; } if (!(obj = virStoragePoolObjFindByName(driver->pools, cbdata->pool_name))) goto cleanup; def = virStoragePoolObjGetDef(obj); /* If some thread is building a new volume in the pool, then we cannot * clear out all vols and refresh the pool. So we'll just pass. */ if (virStoragePoolObjGetAsyncjobs(obj) > 0) { VIR_DEBUG("Asyncjob in process, cannot refresh storage pool"); goto cleanup; } if (!(backend = virStorageBackendForType(def->type))) goto cleanup; if (storagePoolRefreshImpl(backend, obj, NULL) < 0) VIR_DEBUG("Failed to refresh storage pool"); event = virStoragePoolEventRefreshNew(def->name, def->uuid); cleanup: virObjectEventStateQueue(driver->storageEventState, event); virStoragePoolObjEndAPI(&obj); virStorageVolPoolRefreshDataFree(cbdata); } /** * Callback being called if a FDstream is closed. Will spin off a thread * to perform a pool refresh. * * @st Pointer to stream being closed. * @opaque Buffer to hold the pool name to be refreshed */ static void virStorageVolFDStreamCloseCb(virStreamPtr st G_GNUC_UNUSED, void *opaque) { virThread thread; if (virThreadCreateFull(&thread, false, virStorageVolPoolRefreshThread, "vol-refresh", false, opaque) < 0) { /* Not much else can be done */ VIR_ERROR(_("Failed to create thread to handle pool refresh")); goto error; } return; /* Thread will free opaque data */ error: virStorageVolPoolRefreshDataFree(opaque); } static int storageVolUpload(virStorageVolPtr vol, virStreamPtr stream, unsigned long long offset, unsigned long long length, unsigned int flags) { virStorageBackendPtr backend; virStoragePoolObjPtr obj = NULL; virStoragePoolDefPtr def; virStorageVolDefPtr voldef = NULL; virStorageVolStreamInfoPtr cbdata = NULL; int rc; int ret = -1; virCheckFlags(VIR_STORAGE_VOL_UPLOAD_SPARSE_STREAM, -1); if (!(voldef = virStorageVolDefFromVol(vol, &obj, &backend))) return -1; def = virStoragePoolObjGetDef(obj); if (virStorageVolUploadEnsureACL(vol->conn, def, voldef) < 0) goto cleanup; if (voldef->in_use) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still in use."), voldef->name); goto cleanup; } if (voldef->building) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still being allocated."), voldef->name); goto cleanup; } if (!backend->uploadVol) { virReportError(VIR_ERR_NO_SUPPORT, "%s", _("storage pool doesn't support volume upload")); goto cleanup; } /* Use the callback routine in order to * refresh the pool after the volume upload stream closes. This way * we make sure the volume and pool data are refreshed without user * interaction and we can just lookup the backend in the callback * routine in order to call the refresh API. */ cbdata = g_new0(virStorageVolStreamInfo, 1); cbdata->pool_name = g_strdup(def->name); if (voldef->type == VIR_STORAGE_VOL_PLOOP) cbdata->vol_path = g_strdup(voldef->target.path); virStoragePoolObjIncrAsyncjobs(obj); voldef->in_use++; virObjectUnlock(obj); rc = backend->uploadVol(obj, voldef, stream, offset, length, flags); virObjectLock(obj); voldef->in_use--; virStoragePoolObjDecrAsyncjobs(obj); if (rc < 0) goto cleanup; /* Add cleanup callback - call after uploadVol since the stream * is then fully set up */ virFDStreamSetInternalCloseCb(stream, virStorageVolFDStreamCloseCb, cbdata, NULL); cbdata = NULL; ret = 0; cleanup: virStoragePoolObjEndAPI(&obj); if (cbdata) virStorageVolPoolRefreshDataFree(cbdata); return ret; } static int storageVolResize(virStorageVolPtr vol, unsigned long long capacity, unsigned int flags) { virStorageBackendPtr backend; virStoragePoolObjPtr obj = NULL; virStoragePoolDefPtr def; virStorageVolDefPtr voldef = NULL; unsigned long long abs_capacity, delta = 0; int ret = -1; virCheckFlags(VIR_STORAGE_VOL_RESIZE_ALLOCATE | VIR_STORAGE_VOL_RESIZE_DELTA | VIR_STORAGE_VOL_RESIZE_SHRINK, -1); if (!(voldef = virStorageVolDefFromVol(vol, &obj, &backend))) return -1; def = virStoragePoolObjGetDef(obj); if (virStorageVolResizeEnsureACL(vol->conn, def, voldef) < 0) goto cleanup; if (voldef->in_use) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still in use."), voldef->name); goto cleanup; } if (voldef->building) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still being allocated."), voldef->name); goto cleanup; } if (flags & VIR_STORAGE_VOL_RESIZE_DELTA) { if (flags & VIR_STORAGE_VOL_RESIZE_SHRINK) abs_capacity = voldef->target.capacity - MIN(capacity, voldef->target.capacity); else abs_capacity = voldef->target.capacity + capacity; flags &= ~VIR_STORAGE_VOL_RESIZE_DELTA; } else { abs_capacity = capacity; } if (abs_capacity < voldef->target.allocation) { virReportError(VIR_ERR_INVALID_ARG, "%s", _("can't shrink capacity below " "existing allocation")); goto cleanup; } if (abs_capacity < voldef->target.capacity && !(flags & VIR_STORAGE_VOL_RESIZE_SHRINK)) { virReportError(VIR_ERR_INVALID_ARG, "%s", _("Can't shrink capacity below current " "capacity unless shrink flag explicitly specified")); goto cleanup; } if (flags & VIR_STORAGE_VOL_RESIZE_ALLOCATE) delta = abs_capacity - voldef->target.allocation; if (delta > def->available) { virReportError(VIR_ERR_OPERATION_FAILED, "%s", _("Not enough space left in storage pool")); goto cleanup; } if (!backend->resizeVol) { virReportError(VIR_ERR_NO_SUPPORT, "%s", _("storage pool does not support changing of " "volume capacity")); goto cleanup; } if (backend->resizeVol(obj, voldef, abs_capacity, flags) < 0) goto cleanup; voldef->target.capacity = abs_capacity; /* Only update the allocation and pool values if we actually did the * allocation; otherwise, this is akin to a create operation with a * capacity value different and potentially much larger than available */ if (flags & VIR_STORAGE_VOL_RESIZE_ALLOCATE) { voldef->target.allocation = abs_capacity; def->allocation += delta; def->available -= delta; } ret = 0; cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static int storageVolWipePattern(virStorageVolPtr vol, unsigned int algorithm, unsigned int flags) { virStorageBackendPtr backend; virStoragePoolObjPtr obj = NULL; virStorageVolDefPtr voldef = NULL; int rc; int ret = -1; virCheckFlags(0, -1); if (algorithm >= VIR_STORAGE_VOL_WIPE_ALG_LAST) { virReportError(VIR_ERR_INVALID_ARG, _("wiping algorithm %d not supported"), algorithm); return -1; } if (!(voldef = virStorageVolDefFromVol(vol, &obj, &backend))) return -1; if (virStorageVolWipePatternEnsureACL(vol->conn, virStoragePoolObjGetDef(obj), voldef) < 0) goto cleanup; if (voldef->in_use) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still in use."), voldef->name); goto cleanup; } if (voldef->building) { virReportError(VIR_ERR_OPERATION_INVALID, _("volume '%s' is still being allocated."), voldef->name); goto cleanup; } if (!backend->wipeVol) { virReportError(VIR_ERR_NO_SUPPORT, "%s", _("storage pool doesn't support volume wiping")); goto cleanup; } virStoragePoolObjIncrAsyncjobs(obj); voldef->in_use++; virObjectUnlock(obj); rc = backend->wipeVol(obj, voldef, algorithm, flags); virObjectLock(obj); voldef->in_use--; virStoragePoolObjDecrAsyncjobs(obj); if (rc < 0) goto cleanup; /* For local volumes, Instead of using the refreshVol, since * much changes on the target volume, let's update using the * same function as refreshPool would use when it discovers a * volume. The only failure to capture is -1, we can ignore * -2. */ if ((backend->type == VIR_STORAGE_POOL_DIR || backend->type == VIR_STORAGE_POOL_FS || backend->type == VIR_STORAGE_POOL_NETFS || backend->type == VIR_STORAGE_POOL_VSTORAGE) && virStorageBackendRefreshVolTargetUpdate(voldef) == -1) goto cleanup; ret = 0; cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static int storageVolWipe(virStorageVolPtr vol, unsigned int flags) { return storageVolWipePattern(vol, VIR_STORAGE_VOL_WIPE_ALG_ZERO, flags); } static int storageVolGetInfoFlags(virStorageVolPtr vol, virStorageVolInfoPtr info, unsigned int flags) { virStoragePoolObjPtr obj; virStorageBackendPtr backend; virStorageVolDefPtr voldef; int ret = -1; virCheckFlags(VIR_STORAGE_VOL_GET_PHYSICAL, -1); if (!(voldef = virStorageVolDefFromVol(vol, &obj, &backend))) return -1; if (virStorageVolGetInfoFlagsEnsureACL(vol->conn, virStoragePoolObjGetDef(obj), voldef) < 0) goto cleanup; if (backend->refreshVol && backend->refreshVol(obj, voldef) < 0) goto cleanup; memset(info, 0, sizeof(*info)); info->type = voldef->type; info->capacity = voldef->target.capacity; if (flags & VIR_STORAGE_VOL_GET_PHYSICAL) info->allocation = voldef->target.physical; else info->allocation = voldef->target.allocation; ret = 0; cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static int storageVolGetInfo(virStorageVolPtr vol, virStorageVolInfoPtr info) { return storageVolGetInfoFlags(vol, info, 0); } static char * storageVolGetXMLDesc(virStorageVolPtr vol, unsigned int flags) { virStoragePoolObjPtr obj; virStoragePoolDefPtr def; virStorageBackendPtr backend; virStorageVolDefPtr voldef; char *ret = NULL; virCheckFlags(0, NULL); if (!(voldef = virStorageVolDefFromVol(vol, &obj, &backend))) return NULL; def = virStoragePoolObjGetDef(obj); if (virStorageVolGetXMLDescEnsureACL(vol->conn, def, voldef) < 0) goto cleanup; if (backend->refreshVol && backend->refreshVol(obj, voldef) < 0) goto cleanup; ret = virStorageVolDefFormat(def, voldef); cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static char * storageVolGetPath(virStorageVolPtr vol) { virStoragePoolObjPtr obj; virStorageVolDefPtr voldef; char *ret = NULL; if (!(voldef = virStorageVolDefFromVol(vol, &obj, NULL))) return NULL; if (virStorageVolGetPathEnsureACL(vol->conn, virStoragePoolObjGetDef(obj), voldef) < 0) goto cleanup; ret = g_strdup(voldef->target.path); cleanup: virStoragePoolObjEndAPI(&obj); return ret; } static int storageConnectListAllStoragePools(virConnectPtr conn, virStoragePoolPtr **pools, unsigned int flags) { virCheckFlags(VIR_CONNECT_LIST_STORAGE_POOLS_FILTERS_ALL, -1); if (virConnectListAllStoragePoolsEnsureACL(conn) < 0) return -1; return virStoragePoolObjListExport(conn, driver->pools, pools, virConnectListAllStoragePoolsCheckACL, flags); } static int storageConnectStoragePoolEventRegisterAny(virConnectPtr conn, virStoragePoolPtr pool, int eventID, virConnectStoragePoolEventGenericCallback callback, void *opaque, virFreeCallback freecb) { int callbackID = -1; if (virConnectStoragePoolEventRegisterAnyEnsureACL(conn) < 0) return -1; if (virStoragePoolEventStateRegisterID(conn, driver->storageEventState, pool, eventID, callback, opaque, freecb, &callbackID) < 0) callbackID = -1; return callbackID; } static int storageConnectStoragePoolEventDeregisterAny(virConnectPtr conn, int callbackID) { if (virConnectStoragePoolEventDeregisterAnyEnsureACL(conn) < 0) return -1; if (virObjectEventStateDeregisterID(conn, driver->storageEventState, callbackID, true) < 0) return -1; return 0; } /* * virStoragePoolObjFindPoolByUUID * @uuid: The uuid to lookup * * Using the passed @uuid, search the driver pools for a matching uuid. * If found, then lock the pool * * Returns NULL if pool is not found or a locked pool object pointer */ virStoragePoolObjPtr virStoragePoolObjFindPoolByUUID(const unsigned char *uuid) { return virStoragePoolObjFindByUUID(driver->pools, uuid); } /* * virStoragePoolObjBuildTempFilePath * @obj: pool object pointer * @vol: volume definition * * Generate a name for a temporary file using the driver stateDir * as a path, the pool name, and the volume name to be used as input * for mkstemp * * Returns a string pointer on success, NULL on failure */ char * virStoragePoolObjBuildTempFilePath(virStoragePoolObjPtr obj, virStorageVolDefPtr voldef) { virStoragePoolDefPtr def = virStoragePoolObjGetDef(obj); return g_strdup_printf("%s/%s.%s.secret.XXXXXX", driver->stateDir, def->name, voldef->name); } static virStorageDriver storageDriver = { .name = "storage", .connectNumOfStoragePools = storageConnectNumOfStoragePools, /* 0.4.0 */ .connectListStoragePools = storageConnectListStoragePools, /* 0.4.0 */ .connectNumOfDefinedStoragePools = storageConnectNumOfDefinedStoragePools, /* 0.4.0 */ .connectListDefinedStoragePools = storageConnectListDefinedStoragePools, /* 0.4.0 */ .connectListAllStoragePools = storageConnectListAllStoragePools, /* 0.10.2 */ .connectStoragePoolEventRegisterAny = storageConnectStoragePoolEventRegisterAny, /* 2.0.0 */ .connectStoragePoolEventDeregisterAny = storageConnectStoragePoolEventDeregisterAny, /* 2.0.0 */ .connectFindStoragePoolSources = storageConnectFindStoragePoolSources, /* 0.4.0 */ .connectGetStoragePoolCapabilities = storageConnectGetStoragePoolCapabilities, /* 5.2.0 */ .storagePoolLookupByName = storagePoolLookupByName, /* 0.4.0 */ .storagePoolLookupByUUID = storagePoolLookupByUUID, /* 0.4.0 */ .storagePoolLookupByVolume = storagePoolLookupByVolume, /* 0.4.0 */ .storagePoolLookupByTargetPath = storagePoolLookupByTargetPath, /* 4.1.0 */ .storagePoolCreateXML = storagePoolCreateXML, /* 0.4.0 */ .storagePoolDefineXML = storagePoolDefineXML, /* 0.4.0 */ .storagePoolBuild = storagePoolBuild, /* 0.4.0 */ .storagePoolUndefine = storagePoolUndefine, /* 0.4.0 */ .storagePoolCreate = storagePoolCreate, /* 0.4.0 */ .storagePoolDestroy = storagePoolDestroy, /* 0.4.0 */ .storagePoolDelete = storagePoolDelete, /* 0.4.0 */ .storagePoolRefresh = storagePoolRefresh, /* 0.4.0 */ .storagePoolGetInfo = storagePoolGetInfo, /* 0.4.0 */ .storagePoolGetXMLDesc = storagePoolGetXMLDesc, /* 0.4.0 */ .storagePoolGetAutostart = storagePoolGetAutostart, /* 0.4.0 */ .storagePoolSetAutostart = storagePoolSetAutostart, /* 0.4.0 */ .storagePoolNumOfVolumes = storagePoolNumOfVolumes, /* 0.4.0 */ .storagePoolListVolumes = storagePoolListVolumes, /* 0.4.0 */ .storagePoolListAllVolumes = storagePoolListAllVolumes, /* 0.10.2 */ .storageVolLookupByName = storageVolLookupByName, /* 0.4.0 */ .storageVolLookupByKey = storageVolLookupByKey, /* 0.4.0 */ .storageVolLookupByPath = storageVolLookupByPath, /* 0.4.0 */ .storageVolCreateXML = storageVolCreateXML, /* 0.4.0 */ .storageVolCreateXMLFrom = storageVolCreateXMLFrom, /* 0.6.4 */ .storageVolDownload = storageVolDownload, /* 0.9.0 */ .storageVolUpload = storageVolUpload, /* 0.9.0 */ .storageVolDelete = storageVolDelete, /* 0.4.0 */ .storageVolWipe = storageVolWipe, /* 0.8.0 */ .storageVolWipePattern = storageVolWipePattern, /* 0.9.10 */ .storageVolGetInfo = storageVolGetInfo, /* 0.4.0 */ .storageVolGetInfoFlags = storageVolGetInfoFlags, /* 3.0.0 */ .storageVolGetXMLDesc = storageVolGetXMLDesc, /* 0.4.0 */ .storageVolGetPath = storageVolGetPath, /* 0.4.0 */ .storageVolResize = storageVolResize, /* 0.9.10 */ .storagePoolIsActive = storagePoolIsActive, /* 0.7.3 */ .storagePoolIsPersistent = storagePoolIsPersistent, /* 0.7.3 */ }; static virHypervisorDriver storageHypervisorDriver = { .name = "storage", .connectOpen = storageConnectOpen, /* 4.1.0 */ .connectClose = storageConnectClose, /* 4.1.0 */ .connectIsEncrypted = storageConnectIsEncrypted, /* 4.1.0 */ .connectIsSecure = storageConnectIsSecure, /* 4.1.0 */ .connectIsAlive = storageConnectIsAlive, /* 4.1.0 */ .connectGetCapabilities = storageConnectGetCapabilities, /* 5.2.0 */ }; static virConnectDriver storageConnectDriver = { .localOnly = true, .uriSchemes = (const char *[]){ "storage", NULL }, .hypervisorDriver = &storageHypervisorDriver, .storageDriver = &storageDriver, }; static virStateDriver stateDriver = { .name = "storage", .stateInitialize = storageStateInitialize, .stateCleanup = storageStateCleanup, .stateReload = storageStateReload, }; static int storageRegisterFull(bool allbackends) { if (virRegisterConnectDriver(&storageConnectDriver, false) < 0) return -1; if (virStorageBackendDriversRegister(allbackends) < 0) return -1; if (virSetSharedStorageDriver(&storageDriver) < 0) return -1; if (virRegisterStateDriver(&stateDriver) < 0) return -1; return 0; } int storageRegister(void) { return storageRegisterFull(false); } int storageRegisterAll(void) { return storageRegisterFull(true); }