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/*
* storage_backend.h: internal storage driver backend contract
*
* Copyright (C) 2007-2010, 2012 Red Hat, Inc.
* Copyright (C) 2007-2008 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>
*/
#ifndef __VIR_STORAGE_BACKEND_H__
# define __VIR_STORAGE_BACKEND_H__
# include "internal.h"
# include "storage_conf.h"
# include "command.h"
typedef char * (*virStorageBackendFindPoolSources)(virConnectPtr conn, const char *srcSpec, unsigned int flags);
typedef int (*virStorageBackendCheckPool)(virConnectPtr conn, virStoragePoolObjPtr pool, bool *active);
typedef int (*virStorageBackendStartPool)(virConnectPtr conn, virStoragePoolObjPtr pool);
typedef int (*virStorageBackendBuildPool)(virConnectPtr conn, virStoragePoolObjPtr pool, unsigned int flags);
typedef int (*virStorageBackendRefreshPool)(virConnectPtr conn, virStoragePoolObjPtr pool);
typedef int (*virStorageBackendStopPool)(virConnectPtr conn, virStoragePoolObjPtr pool);
typedef int (*virStorageBackendDeletePool)(virConnectPtr conn, virStoragePoolObjPtr pool, unsigned int flags);
typedef int (*virStorageBackendBuildVol)(virConnectPtr conn,
virStoragePoolObjPtr pool, virStorageVolDefPtr vol);
typedef int (*virStorageBackendCreateVol)(virConnectPtr conn, virStoragePoolObjPtr pool, virStorageVolDefPtr vol);
typedef int (*virStorageBackendRefreshVol)(virConnectPtr conn, virStoragePoolObjPtr pool, virStorageVolDefPtr vol);
typedef int (*virStorageBackendDeleteVol)(virConnectPtr conn, virStoragePoolObjPtr pool, virStorageVolDefPtr vol, unsigned int flags);
typedef int (*virStorageBackendBuildVolFrom)(virConnectPtr conn, virStoragePoolObjPtr pool,
virStorageVolDefPtr origvol, virStorageVolDefPtr newvol,
unsigned int flags);
typedef int (*virStorageBackendVolumeResize)(virConnectPtr conn,
virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
unsigned long long capacity,
unsigned int flags);
/* File creation/cloning functions used for cloning between backends */
int virStorageBackendCreateRaw(virConnectPtr conn,
virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
virStorageVolDefPtr inputvol,
unsigned int flags);
virStorageBackendBuildVolFrom
virStorageBackendGetBuildVolFromFunction(virStorageVolDefPtr vol,
virStorageVolDefPtr inputvol);
int virStorageBackendFindFSImageTool(char **tool);
virStorageBackendBuildVolFrom
virStorageBackendFSImageToolTypeToFunc(int tool_type);
typedef struct _virStorageBackend virStorageBackend;
typedef virStorageBackend *virStorageBackendPtr;
struct _virStorageBackend {
int type;
virStorageBackendFindPoolSources findPoolSources;
virStorageBackendCheckPool checkPool;
virStorageBackendStartPool startPool;
virStorageBackendBuildPool buildPool;
virStorageBackendRefreshPool refreshPool;
virStorageBackendStopPool stopPool;
virStorageBackendDeletePool deletePool;
virStorageBackendBuildVol buildVol;
virStorageBackendBuildVolFrom buildVolFrom;
virStorageBackendCreateVol createVol;
virStorageBackendRefreshVol refreshVol;
virStorageBackendDeleteVol deleteVol;
virStorageBackendVolumeResize resizeVol;
};
virStorageBackendPtr virStorageBackendForType(int type);
int virStorageBackendVolOpen(const char *path)
ATTRIBUTE_RETURN_CHECK
ATTRIBUTE_NONNULL(1);
/* VolOpenCheckMode flags */
enum {
VIR_STORAGE_VOL_OPEN_ERROR = 1 << 0, /* warn if unexpected type
* encountered */
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 */
};
# define VIR_STORAGE_VOL_OPEN_DEFAULT (VIR_STORAGE_VOL_OPEN_ERROR |\
VIR_STORAGE_VOL_OPEN_REG |\
VIR_STORAGE_VOL_OPEN_CHAR |\
VIR_STORAGE_VOL_OPEN_BLOCK)
int virStorageBackendVolOpenCheckMode(const char *path, unsigned int flags)
ATTRIBUTE_RETURN_CHECK
ATTRIBUTE_NONNULL(1);
int virStorageBackendUpdateVolInfo(virStorageVolDefPtr vol,
int withCapacity);
int virStorageBackendUpdateVolInfoFlags(virStorageVolDefPtr vol,
int withCapacity,
unsigned int openflags);
int virStorageBackendUpdateVolTargetInfo(virStorageVolTargetPtr target,
unsigned long long *allocation,
unsigned long long *capacity,
unsigned int openflags);
int virStorageBackendUpdateVolTargetInfoFD(virStorageVolTargetPtr target,
int fd,
unsigned long long *allocation,
unsigned long long *capacity);
int
virStorageBackendDetectBlockVolFormatFD(virStorageVolTargetPtr target,
int fd);
char *virStorageBackendStablePath(virStoragePoolObjPtr pool,
const char *devpath);
typedef int (*virStorageBackendListVolRegexFunc)(virStoragePoolObjPtr pool,
char **const groups,
void *data);
typedef int (*virStorageBackendListVolNulFunc)(virStoragePoolObjPtr pool,
size_t n_tokens,
char **const groups,
void *data);
int virStorageBackendRunProgRegex(virStoragePoolObjPtr pool,
virCommandPtr cmd,
int nregex,
const char **regex,
int *nvars,
virStorageBackendListVolRegexFunc func,
void *data, const char *cmd_to_ignore);
int virStorageBackendRunProgNul(virStoragePoolObjPtr pool,
virCommandPtr cmd,
size_t n_columns,
virStorageBackendListVolNulFunc func,
void *data);
#endif /* __VIR_STORAGE_BACKEND_H__ */
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