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libvirt/src/storage/storage_driver.c
Anya Harter 031eb8f6dc events: add NULL check in virObjectEventStateQueue 
And remove NULL checking from all callers.

Signed-off-by: Anya Harter <aharter@redhat.com>
2018-06-12 07:28:18 +02:00

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/*
* 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
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <fcntl.h>
#if HAVE_PWD_H
# include <pwd.h>
#endif
#include <errno.h>
#include <string.h>
#include "virerror.h"
#include "datatypes.h"
#include "driver.h"
#include "storage_driver.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 "configmake.h"
#include "virsecret.h"
#include "virstring.h"
#include "viraccessapicheck.h"
//#include "dirname.h"
#include "storage_util.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);
}
/**
* virStoragePoolUpdateInactive:
* @poolptr: pointer to a variable holding the pool object pointer
*
* 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 *objptr)
{
virStoragePoolObjPtr obj = *objptr;
if (!virStoragePoolObjGetConfigFile(obj)) {
virStoragePoolObjRemove(driver->pools, obj);
virObjectUnref(obj);
*objptr = NULL;
} else if (virStoragePoolObjGetNewDef(obj)) {
virStoragePoolObjDefUseNewDef(obj);
}
}
static void
storagePoolUpdateStateCallback(virStoragePoolObjPtr obj,
const void *opaque ATTRIBUTE_UNUSED)
{
virStoragePoolDefPtr def = virStoragePoolObjGetDef(obj);
bool active = false;
virStorageBackendPtr backend;
char *stateFile;
if (!(stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml")))
goto cleanup;
if ((backend = virStorageBackendForType(def->type)) == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing backend %d"), def->type);
goto cleanup;
}
/* 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());
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) {
virStoragePoolObjClearVols(obj);
if (backend->refreshPool(obj) < 0) {
if (backend->stopPool)
backend->stopPool(obj);
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);
cleanup:
if (!active && stateFile)
ignore_value(unlink(stateFile));
VIR_FREE(stateFile);
return;
}
static void
storagePoolUpdateAllState(void)
{
virStoragePoolObjListForEach(driver->pools,
storagePoolUpdateStateCallback,
NULL);
}
static void
storageDriverAutostartCallback(virStoragePoolObjPtr obj,
const void *opaque ATTRIBUTE_UNUSED)
{
virStoragePoolDefPtr def = virStoragePoolObjGetDef(obj);
virStorageBackendPtr backend;
bool started = false;
if (!(backend = virStorageBackendForType(def->type)))
return;
if (virStoragePoolObjIsAutostart(obj) &&
!virStoragePoolObjIsActive(obj)) {
if (backend->startPool &&
backend->startPool(obj) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to autostart storage pool '%s': %s"),
def->name, virGetLastErrorMessage());
return;
}
started = true;
}
if (started) {
char *stateFile;
virStoragePoolObjClearVols(obj);
stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml");
if (!stateFile ||
virStoragePoolSaveState(stateFile, def) < 0 ||
backend->refreshPool(obj) < 0) {
if (stateFile)
unlink(stateFile);
if (backend->stopPool)
backend->stopPool(obj);
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to autostart storage pool '%s': %s"),
def->name, virGetLastErrorMessage());
} else {
virStoragePoolObjSetActive(obj, true);
}
VIR_FREE(stateFile);
}
}
static void
storageDriverAutostart(void)
{
virStoragePoolObjListForEach(driver->pools,
storageDriverAutostartCallback,
NULL);
}
/**
* virStorageStartup:
*
* Initialization function for the Storage Driver
*/
static int
storageStateInitialize(bool privileged,
virStateInhibitCallback callback ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED)
{
int ret = -1;
char *configdir = NULL;
char *rundir = NULL;
if (VIR_ALLOC(driver) < 0)
return ret;
if (virMutexInit(&driver->lock) < 0) {
VIR_FREE(driver);
return ret;
}
storageDriverLock();
if (!(driver->pools = virStoragePoolObjListNew()))
goto error;
if (privileged) {
if (VIR_STRDUP(driver->configDir,
SYSCONFDIR "/libvirt/storage") < 0 ||
VIR_STRDUP(driver->autostartDir,
SYSCONFDIR "/libvirt/storage/autostart") < 0 ||
VIR_STRDUP(driver->stateDir,
LOCALSTATEDIR "/run/libvirt/storage") < 0)
goto error;
} else {
configdir = virGetUserConfigDirectory();
rundir = virGetUserRuntimeDirectory();
if (!(configdir && rundir))
goto error;
if ((virAsprintf(&driver->configDir,
"%s/storage", configdir) < 0) ||
(virAsprintf(&driver->autostartDir,
"%s/storage/autostart", configdir) < 0) ||
(virAsprintf(&driver->stateDir,
"%s/storage/run", rundir) < 0))
goto error;
}
driver->privileged = privileged;
if (virFileMakePath(driver->stateDir) < 0) {
virReportError(errno,
_("cannot create directory %s"),
driver->stateDir);
goto error;
}
if (virStoragePoolObjLoadAllState(driver->pools,
driver->stateDir) < 0)
goto error;
if (virStoragePoolObjLoadAllConfigs(driver->pools,
driver->configDir,
driver->autostartDir) < 0)
goto error;
storagePoolUpdateAllState();
driver->storageEventState = virObjectEventStateNew();
storageDriverUnlock();
ret = 0;
cleanup:
VIR_FREE(configdir);
VIR_FREE(rundir);
return ret;
error:
storageDriverUnlock();
storageStateCleanup();
goto cleanup;
}
/**
* storageStateAutoStart:
*
* Function to auto start the storage driver
*/
static void
storageStateAutoStart(void)
{
if (!driver)
return;
storageDriverLock();
storageDriverAutostart();
storageDriverUnlock();
}
/**
* 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->storageEventState);
/* free inactive pools */
virObjectUnref(driver->pools);
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 ATTRIBUTE_UNUSED,
virConfPtr conf ATTRIBUTE_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 (driver->privileged) {
if (STRNEQ(conn->uri->path, "/system")) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected storage URI path '%s', try storage:///system"),
conn->uri->path);
return VIR_DRV_OPEN_ERROR;
}
} else {
if (STRNEQ(conn->uri->path, "/session")) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected storage URI path '%s', try storage:///session"),
conn->uri->path);
return VIR_DRV_OPEN_ERROR;
}
}
if (virConnectOpenEnsureACL(conn) < 0)
return VIR_DRV_OPEN_ERROR;
return VIR_DRV_OPEN_SUCCESS;
}
static int storageConnectClose(virConnectPtr conn ATTRIBUTE_UNUSED)
{
return 0;
}
static int storageConnectIsSecure(virConnectPtr conn ATTRIBUTE_UNUSED)
{
/* Trivially secure, since always inside the daemon */
return 1;
}
static int storageConnectIsEncrypted(virConnectPtr conn ATTRIBUTE_UNUSED)
{
/* Not encrypted, but remote driver takes care of that */
return 0;
}
static int storageConnectIsAlive(virConnectPtr conn ATTRIBUTE_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 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;
char *ret = NULL;
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);
goto cleanup;
}
backend = virStorageBackendForType(backend_type);
if (backend == NULL)
goto cleanup;
if (!backend->findPoolSources) {
virReportError(VIR_ERR_NO_SUPPORT,
_("pool type '%s' does not support source "
"discovery"), type);
goto cleanup;
}
ret = backend->findPoolSources(srcSpec, flags);
cleanup:
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)
{
virStoragePoolDefPtr newDef;
virStoragePoolObjPtr obj = NULL;
virStoragePoolDefPtr def;
virStoragePoolPtr pool = NULL;
virStorageBackendPtr backend;
virObjectEventPtr event = NULL;
char *stateFile = NULL;
unsigned int build_flags = 0;
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 (virStoragePoolObjIsDuplicate(driver->pools, newDef, true) < 0)
goto cleanup;
if (virStoragePoolObjSourceFindDuplicate(conn, driver->pools, newDef) < 0)
goto cleanup;
if ((backend = virStorageBackendForType(newDef->type)) == NULL)
goto cleanup;
if (!(obj = virStoragePoolObjAssignDef(driver->pools, newDef)))
goto cleanup;
newDef = NULL;
def = virStoragePoolObjGetDef(obj);
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) {
virStoragePoolObjRemove(driver->pools, obj);
virObjectUnref(obj);
obj = NULL;
goto cleanup;
}
}
}
if (backend->startPool &&
backend->startPool(obj) < 0) {
virStoragePoolObjRemove(driver->pools, obj);
virObjectUnref(obj);
obj = NULL;
goto cleanup;
}
stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml");
virStoragePoolObjClearVols(obj);
if (!stateFile || virStoragePoolSaveState(stateFile, def) < 0 ||
backend->refreshPool(obj) < 0) {
if (stateFile)
unlink(stateFile);
if (backend->stopPool)
backend->stopPool(obj);
virStoragePoolObjRemove(driver->pools, obj);
virObjectUnref(obj);
obj = NULL;
goto cleanup;
}
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:
VIR_FREE(stateFile);
virStoragePoolDefFree(newDef);
virObjectEventStateQueue(driver->storageEventState, event);
virStoragePoolObjEndAPI(&obj);
return pool;
}
static virStoragePoolPtr
storagePoolDefineXML(virConnectPtr conn,
const char *xml,
unsigned int flags)
{
virStoragePoolDefPtr newDef;
virStoragePoolObjPtr obj = NULL;
virStoragePoolDefPtr def;
virStoragePoolPtr pool = NULL;
virObjectEventPtr event = 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 (virStoragePoolObjIsDuplicate(driver->pools, newDef, false) < 0)
goto cleanup;
if (virStoragePoolObjSourceFindDuplicate(conn, driver->pools, newDef) < 0)
goto cleanup;
if (virStorageBackendForType(newDef->type) == NULL)
goto cleanup;
if (!(obj = virStoragePoolObjAssignDef(driver->pools, newDef)))
goto cleanup;
newDef = NULL;
def = virStoragePoolObjGetDef(obj);
if (virStoragePoolObjSaveDef(driver, obj, def) < 0) {
virStoragePoolObjRemove(driver->pools, obj);
virObjectUnref(obj);
obj = 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);
cleanup:
virObjectEventStateQueue(driver->storageEventState, event);
virStoragePoolDefFree(newDef);
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 (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) {
char ebuf[1024];
VIR_ERROR(_("Failed to delete autostart link '%s': %s"),
autostartLink, virStrerror(errno, ebuf, sizeof(ebuf)));
}
event = virStoragePoolEventLifecycleNew(def->name,
def->uuid,
VIR_STORAGE_POOL_EVENT_UNDEFINED,
0);
VIR_INFO("Undefining storage pool '%s'", def->name);
virStoragePoolObjRemove(driver->pools, obj);
virObjectUnref(obj);
obj = NULL;
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;
char *stateFile = NULL;
unsigned int build_flags = 0;
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 (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");
virStoragePoolObjClearVols(obj);
if (!stateFile || virStoragePoolSaveState(stateFile, def) < 0 ||
backend->refreshPool(obj) < 0) {
if (stateFile)
unlink(stateFile);
if (backend->stopPool)
backend->stopPool(obj);
goto cleanup;
}
event = virStoragePoolEventLifecycleNew(def->name,
def->uuid,
VIR_STORAGE_POOL_EVENT_STARTED,
0);
virStoragePoolObjSetActive(obj, true);
ret = 0;
cleanup:
VIR_FREE(stateFile);
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;
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 (backend->buildPool &&
backend->buildPool(obj, flags) < 0)
goto cleanup;
event = virStoragePoolEventLifecycleNew(def->name,
def->uuid,
VIR_STORAGE_POOL_EVENT_CREATED,
0);
ret = 0;
cleanup:
virObjectEventStateQueue(driver->storageEventState, event);
virStoragePoolObjEndAPI(&obj);
return ret;
}
static int
storagePoolDestroy(virStoragePoolPtr pool)
{
virStoragePoolObjPtr obj;
virStoragePoolDefPtr def;
virStorageBackendPtr backend;
virObjectEventPtr event = NULL;
char *stateFile = NULL;
int ret = -1;
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 (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);
VIR_FREE(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;
char *stateFile = NULL;
int ret = -1;
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 (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);
VIR_FREE(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;
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 (virStoragePoolObjGetAsyncjobs(obj) > 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("pool '%s' has asynchronous jobs running."),
def->name);
goto cleanup;
}
virStoragePoolObjClearVols(obj);
if (backend->refreshPool(obj) < 0) {
if (backend->stopPool)
backend->stopPool(obj);
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;
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_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:
ignore_value(VIR_STRDUP(stable_path, 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);
VIR_FREE(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(path, def->target.path);
}
virStoragePoolPtr
storagePoolLookupByTargetPath(virConnectPtr conn,
const char *path)
{
virStoragePoolObjPtr obj;
virStoragePoolDefPtr def;
virStoragePoolPtr pool = NULL;
char *cleanpath;
cleanpath = virFileSanitizePath(path);
if (!cleanpath)
return NULL;
if ((obj = virStoragePoolObjListSearch(driver->pools,
storagePoolLookupByTargetPathCallback,
cleanpath))) {
def = virStoragePoolObjGetDef(obj);
if (virStoragePoolLookupByTargetPathEnsureACL(conn, def) < 0)
goto cleanup;
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);
}
}
cleanup:
VIR_FREE(cleanpath);
return pool;
}
static int
storageVolDeleteInternal(virStorageBackendPtr backend,
virStoragePoolObjPtr obj,
virStorageVolDefPtr voldef,
unsigned int flags,
bool updateMeta)
{
virStoragePoolDefPtr def = virStoragePoolObjGetDef(obj);
int ret = -1;
if (!backend->deleteVol) {
virReportError(VIR_ERR_NO_SUPPORT,
"%s", _("storage pool does not support vol deletion"));
goto cleanup;
}
if (backend->deleteVol(obj, voldef, flags) < 0)
goto cleanup;
/* 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) {
ret = 0;
goto cleanup;
}
/* 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);
ret = 0;
cleanup:
return ret;
}
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;
virStorageVolDefPtr voldef = NULL;
virStorageVolPtr vol = NULL, newvol = 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;
if (VIR_ALLOC(buildvoldef) < 0) {
voldef = NULL;
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
*/
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 = newvol;
newvol = NULL;
voldef = NULL;
cleanup:
virObjectUnref(newvol);
virStorageVolDefFree(voldef);
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 voldef = NULL;
virStorageVolDefPtr shadowvol = NULL;
virStorageVolPtr newvol = NULL;
virStorageVolPtr vol = NULL;
int buildret;
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
*/
if (VIR_ALLOC(shadowvol) < 0)
goto cleanup;
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 = newvol;
newvol = NULL;
voldef = NULL;
cleanup:
virObjectUnref(newvol);
virStorageVolDefFree(voldef);
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;
}
ret = backend->downloadVol(obj, voldef, stream,
offset, length, flags);
cleanup:
virStoragePoolObjEndAPI(&obj);
return ret;
}
/**
* Frees opaque data.
*
* @opaque Data to be freed.
*/
static void
virStorageVolPoolRefreshDataFree(void *opaque)
{
virStorageVolStreamInfoPtr cbdata = opaque;
VIR_FREE(cbdata->pool_name);
VIR_FREE(cbdata);
}
static int
virStorageBackendPloopRestoreDesc(char *path)
{
int ret = -1;
virCommandPtr cmd = NULL;
char *refresh_tool = NULL;
char *desc = NULL;
if (virAsprintf(&desc, "%s/DiskDescriptor.xml", path) < 0)
return ret;
if (virFileRemove(desc, 0, 0) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("refresh ploop failed:"
" unable to delete DiskDescriptor.xml"));
goto cleanup;
}
refresh_tool = virFindFileInPath("ploop");
if (!refresh_tool) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to find ploop, please install ploop tools"));
goto cleanup;
}
cmd = virCommandNewArgList(refresh_tool, "restore-descriptor",
path, NULL);
virCommandAddArgFormat(cmd, "%s/root.hds", path);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(refresh_tool);
virCommandFree(cmd);
VIR_FREE(desc);
return ret;
}
/**
* 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;
virStoragePoolObjClearVols(obj);
if (backend->refreshPool(obj) < 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 ATTRIBUTE_UNUSED,
void *opaque)
{
virThread thread;
if (virThreadCreate(&thread, false, virStorageVolPoolRefreshThread,
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 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.
*/
if (VIR_ALLOC(cbdata) < 0 ||
VIR_STRDUP(cbdata->pool_name, def->name) < 0)
goto cleanup;
if (voldef->type == VIR_STORAGE_VOL_PLOOP &&
VIR_STRDUP(cbdata->vol_path, voldef->target.path) < 0)
goto cleanup;
if ((ret = backend->uploadVol(obj, voldef, stream,
offset, length, flags)) < 0)
goto cleanup;
/* Add cleanup callback - call after uploadVol since the stream
* is then fully set up
*/
virFDStreamSetInternalCloseCb(stream,
virStorageVolFDStreamCloseCb,
cbdata, NULL);
cbdata = NULL;
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 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;
}
if (backend->wipeVol(obj, voldef, algorithm, flags) < 0)
goto cleanup;
/* 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 (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;
ignore_value(VIR_STRDUP(ret, 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)
goto cleanup;
if (virStoragePoolEventStateRegisterID(conn, driver->storageEventState,
pool, eventID, callback,
opaque, freecb, &callbackID) < 0)
callbackID = -1;
cleanup:
return callbackID;
}
static int
storageConnectStoragePoolEventDeregisterAny(virConnectPtr conn,
int callbackID)
{
int ret = -1;
if (virConnectStoragePoolEventDeregisterAnyEnsureACL(conn) < 0)
goto cleanup;
if (virObjectEventStateDeregisterID(conn,
driver->storageEventState,
callbackID, true) < 0)
goto cleanup;
ret = 0;
cleanup:
return ret;
}
/*
* 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 a mkostemp
*
* Returns a string pointer on success, NULL on failure
*/
char *
virStoragePoolObjBuildTempFilePath(virStoragePoolObjPtr obj,
virStorageVolDefPtr voldef)
{
virStoragePoolDefPtr def = virStoragePoolObjGetDef(obj);
char *tmp = NULL;
ignore_value(virAsprintf(&tmp, "%s/%s.%s.secret.XXXXXX",
driver->stateDir, def->name, voldef->name));
return tmp;
}
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 */
.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 */
};
static virConnectDriver storageConnectDriver = {
.localOnly = true,
.uriSchemes = (const char *[]){ "storage", NULL },
.hypervisorDriver = &storageHypervisorDriver,
.storageDriver = &storageDriver,
};
static virStateDriver stateDriver = {
.name = "storage",
.stateInitialize = storageStateInitialize,
.stateAutoStart = storageStateAutoStart,
.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);
}
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