libvirt/src/storage_file/storage_source.h

149 lines
4.3 KiB
C
Raw Normal View History

/*
* storage_source.h: file utility functions for FS storage backend
*
* Copyright (C) 2007-2009, 2012-2016 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/>.
*/
#pragma once
#include "storage_source_conf.h"
#ifndef DEV_BSIZE
# define DEV_BSIZE 512
#endif
virStorageSourcePtr
virStorageFileGetMetadataFromFD(const char *path,
int fd,
int format);
virStorageSourcePtr
virStorageFileGetMetadataFromBuf(const char *path,
char *buf,
size_t len,
int format)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
virStorageSourcePtr
virStorageFileChainLookup(virStorageSourcePtr chain,
virStorageSourcePtr startFrom,
const char *name,
unsigned int idx,
virStorageSourcePtr *parent)
ATTRIBUTE_NONNULL(1);
int
virStorageSourceUpdatePhysicalSize(virStorageSourcePtr src,
int fd,
struct stat const *sb);
int
virStorageSourceUpdateBackingSizes(virStorageSourcePtr src,
int fd,
struct stat const *sb);
int
virStorageSourceUpdateCapacity(virStorageSourcePtr src,
char *buf,
ssize_t len);
int
virStorageSourceNewFromBacking(virStorageSourcePtr parent,
virStorageSourcePtr *backing);
int
virStorageSourceParseRBDColonString(const char *rbdstr,
virStorageSourcePtr src)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
int
virStorageFileGetRelativeBackingPath(virStorageSourcePtr top,
virStorageSourcePtr base,
char **relpath)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
int
virStorageSourceNewFromBackingAbsolute(const char *path,
virStorageSourcePtr *src);
int
virStorageFileInit(virStorageSourcePtr src);
int
virStorageFileInitAs(virStorageSourcePtr src,
uid_t uid, gid_t gid);
void
virStorageFileDeinit(virStorageSourcePtr src);
int
virStorageFileCreate(virStorageSourcePtr src);
int
virStorageFileUnlink(virStorageSourcePtr src);
int
virStorageFileStat(virStorageSourcePtr src,
struct stat *st);
ssize_t
virStorageFileRead(virStorageSourcePtr src,
size_t offset,
size_t len,
char **buf);
const char *
virStorageFileGetUniqueIdentifier(virStorageSourcePtr src);
int
virStorageFileAccess(virStorageSourcePtr src,
int mode);
int
virStorageFileChown(const virStorageSource *src,
uid_t uid,
gid_t gid);
int
virStorageFileSupportsSecurityDriver(const virStorageSource *src);
int
virStorageFileSupportsAccess(const virStorageSource *src);
int
virStorageFileSupportsCreate(const virStorageSource *src);
int
virStorageFileSupportsBackingChainTraversal(const virStorageSource *src);
int
virStorageFileGetMetadata(virStorageSourcePtr src,
uid_t uid, gid_t gid,
bool report_broken)
ATTRIBUTE_NONNULL(1);
int
virStorageFileGetBackingStoreStr(virStorageSourcePtr src,
char **backing)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
void
virStorageFileReportBrokenChain(int errcode,
virStorageSourcePtr src,
virStorageSourcePtr parent);