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41ac222e52
The current virStorageFileGet{LVM,SCSI}Key methods return
the key as the return value. Unfortunately it is desirable
for "NULL" to be a valid return value, as well as an error
indicator. Thus the returned key must instead be provided
as an out-parameter.
When we invoke lvs or scsi_id to extract ID for block devices,
we don't want virCommandWait logging errors messages. Thus we
must explicitly check 'status != 0', rather than letting
virCommandWait do it.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
110 lines
3.8 KiB
C
110 lines
3.8 KiB
C
/*
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* storage_file.c: file utility functions for FS storage backend
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*
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* Copyright (C) 2007-2009, 2012 Red Hat, Inc.
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* Copyright (C) 2007-2008 Daniel P. Berrange
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#ifndef __VIR_STORAGE_FILE_H__
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# define __VIR_STORAGE_FILE_H__
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# include "util.h"
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enum virStorageFileFormat {
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VIR_STORAGE_FILE_AUTO_SAFE = -2,
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VIR_STORAGE_FILE_AUTO = -1,
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VIR_STORAGE_FILE_NONE = 0,
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VIR_STORAGE_FILE_RAW,
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VIR_STORAGE_FILE_DIR,
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VIR_STORAGE_FILE_BOCHS,
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VIR_STORAGE_FILE_CLOOP,
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VIR_STORAGE_FILE_COW,
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VIR_STORAGE_FILE_DMG,
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VIR_STORAGE_FILE_ISO,
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VIR_STORAGE_FILE_QCOW,
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VIR_STORAGE_FILE_QCOW2,
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VIR_STORAGE_FILE_QED,
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VIR_STORAGE_FILE_VMDK,
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VIR_STORAGE_FILE_VPC,
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VIR_STORAGE_FILE_FAT,
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VIR_STORAGE_FILE_VHD,
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VIR_STORAGE_FILE_LAST,
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};
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VIR_ENUM_DECL(virStorageFileFormat);
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typedef struct _virStorageFileMetadata virStorageFileMetadata;
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typedef virStorageFileMetadata *virStorageFileMetadataPtr;
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struct _virStorageFileMetadata {
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char *backingStore; /* Canonical name (absolute file, or protocol) */
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char *backingStoreRaw; /* If file, original name, possibly relative */
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int backingStoreFormat; /* enum virStorageFileFormat */
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bool backingStoreIsFile;
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virStorageFileMetadataPtr backingMeta;
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unsigned long long capacity;
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bool encrypted;
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};
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# ifndef DEV_BSIZE
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# define DEV_BSIZE 512
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# endif
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int virStorageFileProbeFormat(const char *path, uid_t uid, gid_t gid);
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int virStorageFileProbeFormatFromFD(const char *path,
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int fd);
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virStorageFileMetadataPtr virStorageFileGetMetadata(const char *path,
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int format,
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uid_t uid, gid_t gid,
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bool allow_probe);
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virStorageFileMetadataPtr virStorageFileGetMetadataFromFD(const char *path,
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int fd,
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int format);
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const char *virStorageFileChainLookup(virStorageFileMetadataPtr chain,
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const char *start,
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const char *name,
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virStorageFileMetadataPtr *meta,
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const char **parent)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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void virStorageFileFreeMetadata(virStorageFileMetadataPtr meta);
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int virStorageFileResize(const char *path, unsigned long long capacity);
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enum {
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VIR_STORAGE_FILE_SHFS_NFS = (1 << 0),
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VIR_STORAGE_FILE_SHFS_GFS2 = (1 << 1),
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VIR_STORAGE_FILE_SHFS_OCFS = (1 << 2),
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VIR_STORAGE_FILE_SHFS_AFS = (1 << 3),
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};
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int virStorageFileIsSharedFS(const char *path);
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int virStorageFileIsClusterFS(const char *path);
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int virStorageFileIsSharedFSType(const char *path,
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int fstypes);
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int virStorageFileGetLVMKey(const char *path,
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char **key);
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int virStorageFileGetSCSIKey(const char *path,
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char **key);
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#endif /* __VIR_STORAGE_FILE_H__ */
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