libvirt/src/storage/storage_util.h

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/*
* storage_util.h: utility functions for storage driver
*
* This library is free software; you can redistribute it 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/>.
*/
#ifndef __VIR_STORAGE_UTIL_H__
# define __VIR_STORAGE_UTIL_H__
# include <sys/stat.h>
# include "internal.h"
# include "vircommand.h"
# include "storage_driver.h"
# include "storage_backend.h"
/* File creation/cloning functions used for cloning between backends */
int
virStorageBackendCreateVolUsingQemuImg(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
virStorageVolDefPtr inputvol,
unsigned int flags);
virStorageBackendBuildVolFrom
virStorageBackendGetBuildVolFromFunction(virStorageVolDefPtr vol,
virStorageVolDefPtr inputvol);
int virStorageBackendVolCreateLocal(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol);
int virStorageBackendVolBuildLocal(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
unsigned int flags);
int virStorageBackendVolBuildFromLocal(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
virStorageVolDefPtr inputvol,
unsigned int flags);
int virStorageBackendVolDeleteLocal(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
unsigned int flags);
int virStorageBackendVolRefreshLocal(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol);
int virStorageBackendVolResizeLocal(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
unsigned long long capacity,
unsigned int flags);
int virStorageBackendVolUploadLocal(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
virStreamPtr stream,
unsigned long long offset,
unsigned long long len,
unsigned int flags);
int virStorageBackendVolDownloadLocal(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
virStreamPtr stream,
unsigned long long offset,
unsigned long long len,
unsigned int flags);
int virStorageBackendVolWipeLocal(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
unsigned int algorithm,
unsigned int flags);
/* Local/Common Storage Pool Backend APIs */
int virStorageBackendBuildLocal(virStoragePoolObjPtr pool);
int virStorageBackendDeleteLocal(virStoragePoolObjPtr pool,
unsigned int flags);
int
virStorageBackendRefreshVolTargetUpdate(virStorageVolDefPtr vol);
int virStorageBackendRefreshLocal(virStoragePoolObjPtr pool);
int virStorageUtilGlusterExtractPoolSources(const char *host,
const char *xml,
virStoragePoolSourceListPtr list,
virStoragePoolType pooltype);
int virStorageBackendFindGlusterPoolSources(const char *host,
virStoragePoolType pooltype,
virStoragePoolSourceListPtr list,
bool report);
bool virStorageBackendDeviceIsEmpty(const char *devpath,
const char *format,
bool writelabel);
/* VolOpenCheckMode flags */
enum {
VIR_STORAGE_VOL_OPEN_NOERROR = 1 << 0, /* don't error if unexpected type
* encountered, just warn */
VIR_STORAGE_VOL_OPEN_REG = 1 << 1, /* regular files okay */
VIR_STORAGE_VOL_OPEN_BLOCK = 1 << 2, /* block files okay */
VIR_STORAGE_VOL_OPEN_CHAR = 1 << 3, /* char files okay */
VIR_STORAGE_VOL_OPEN_DIR = 1 << 4, /* directories okay */
};
/* VolReadErrorMode flags
* If flag is present, then operation won't cause fatal error for
* specified operation, rather a VIR_WARN will be issued and a -2 returned
* for function call
*/
enum {
VIR_STORAGE_VOL_READ_NOERROR = 1 << 0, /* ignore *read errors */
};
# define VIR_STORAGE_VOL_OPEN_DEFAULT (VIR_STORAGE_VOL_OPEN_REG |\
VIR_STORAGE_VOL_OPEN_BLOCK)
# define VIR_STORAGE_VOL_FS_OPEN_FLAGS (VIR_STORAGE_VOL_OPEN_DEFAULT | \
VIR_STORAGE_VOL_OPEN_DIR)
# define VIR_STORAGE_VOL_FS_PROBE_FLAGS (VIR_STORAGE_VOL_FS_OPEN_FLAGS | \
VIR_STORAGE_VOL_OPEN_NOERROR)
int virStorageBackendVolOpen(const char *path, struct stat *sb,
unsigned int flags)
ATTRIBUTE_RETURN_CHECK
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
# define VIR_STORAGE_DEFAULT_POOL_PERM_MODE 0711
# define VIR_STORAGE_DEFAULT_VOL_PERM_MODE 0600
int virStorageBackendUpdateVolInfo(virStorageVolDefPtr vol,
bool withBlockVolFormat,
unsigned int openflags,
unsigned int readflags);
int virStorageBackendUpdateVolTargetInfoFD(virStorageSourcePtr target,
int fd,
struct stat *sb);
bool virStorageBackendPoolPathIsStable(const char *path);
char *virStorageBackendStablePath(virStoragePoolObjPtr pool,
const char *devpath,
bool loop);
virCommandPtr
virStorageBackendCreateQemuImgCmdFromVol(virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
virStorageVolDefPtr inputvol,
unsigned int flags,
const char *create_tool,
const char *secretPath);
int virStorageBackendSCSIFindLUs(virStoragePoolObjPtr pool,
uint32_t scanhost);
int
virStorageBackendZeroPartitionTable(const char *path,
unsigned long long size);
#endif /* __VIR_STORAGE_UTIL_H__ */