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snapshot: new function bdrv_snapshot_find_by_id_and_name()

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To make it clear about id and name in searching, add this API
to distinguish them. Caller can choose to search by id or name,
*errp will be set only for exception.

Some code are modified based on Pavel's patch.

Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Wenchao Xia 2013-09-11 14:04:32 +08:00 • committed by Kevin Wolf
parent d982919d38
commit 2ea1dd758c
2 changed files with 79 additions and 0 deletions
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6
include/block/snapshot.h
View file

@ -26,6 +26,7 @@
#define SNAPSHOT_H
#include "qemu-common.h"
#include "qapi/error.h"
typedef struct QEMUSnapshotInfo {
char id_str[128]; /* unique snapshot id */
@ -40,6 +41,11 @@ typedef struct QEMUSnapshotInfo {
int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info,
const char *name);
bool bdrv_snapshot_find_by_id_and_name(BlockDriverState *bs,
const char *id,
const char *name,
QEMUSnapshotInfo *sn_info,
Error **errp);
int bdrv_can_snapshot(BlockDriverState *bs);
int bdrv_snapshot_create(BlockDriverState *bs,
QEMUSnapshotInfo *sn_info);