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| author | Wenchao Xia <xiawenc@linux.vnet.ibm.com> | 2013-12-04 17:10:54 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-12-04 15:19:00 +0100 |
| commit | 7b4c4781e390a041fa0ef70817678f1b97fc6db6 (patch) | |
| tree | 3506ed0d0b5789ee3af96cff47b66ad064466c83 /block/qcow2-snapshot.c | |
| parent | 34602dd6424c4f1cc414ba672f4f430182b5d9f2 (diff) | |
| download | qemu-7b4c4781e390a041fa0ef70817678f1b97fc6db6.tar.gz | |
snapshot: distinguish id and name in load_tmp
Since later this function will be used so improve it. The only caller of it
now is qemu-img, and it is not impacted by introduce function
bdrv_snapshot_load_tmp_by_id_or_name() that call bdrv_snapshot_load_tmp()
twice to keep old search logic. bdrv_snapshot_load_tmp_by_id_or_name() return
int to let caller know the errno, and errno will be used later.
Also fix a typo in comments of bdrv_snapshot_delete().
Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/qcow2-snapshot.c')
| -rw-r--r-- | block/qcow2-snapshot.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c index 3529c683c6..ad8bf3dcd9 100644 --- a/block/qcow2-snapshot.c +++ b/block/qcow2-snapshot.c @@ -675,7 +675,10 @@ int qcow2_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab) return s->nb_snapshots; } -int qcow2_snapshot_load_tmp(BlockDriverState *bs, const char *snapshot_name) +int qcow2_snapshot_load_tmp(BlockDriverState *bs, + const char *snapshot_id, + const char *name, + Error **errp) { int i, snapshot_index; BDRVQcowState *s = bs->opaque; @@ -687,8 +690,10 @@ int qcow2_snapshot_load_tmp(BlockDriverState *bs, const char *snapshot_name) assert(bs->read_only); /* Search the snapshot */ - snapshot_index = find_snapshot_by_id_or_name(bs, snapshot_name); + snapshot_index = find_snapshot_by_id_and_name(bs, snapshot_id, name); if (snapshot_index < 0) { + error_setg(errp, + "Can't find snapshot"); return -ENOENT; } sn = &s->snapshots[snapshot_index]; @@ -699,6 +704,7 @@ int qcow2_snapshot_load_tmp(BlockDriverState *bs, const char *snapshot_name) ret = bdrv_pread(bs->file, sn->l1_table_offset, new_l1_table, new_l1_bytes); if (ret < 0) { + error_setg(errp, "Failed to read l1 table for snapshot"); g_free(new_l1_table); return ret; } |