diff options
Diffstat (limited to 'block/qcow2-snapshot.c')
| -rw-r--r-- | block/qcow2-snapshot.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c index 752883e5c3..80d32e4504 100644 --- a/block/qcow2-snapshot.c +++ b/block/qcow2-snapshot.c @@ -43,7 +43,7 @@ void qcow2_free_snapshots(BlockDriverState *bs) s->nb_snapshots = 0; } -int qcow2_read_snapshots(BlockDriverState *bs) +int qcow2_read_snapshots(BlockDriverState *bs, Error **errp) { BDRVQcow2State *s = bs->opaque; QCowSnapshotHeader h; @@ -68,6 +68,7 @@ int qcow2_read_snapshots(BlockDriverState *bs) offset = ROUND_UP(offset, 8); ret = bdrv_pread(bs->file, offset, &h, sizeof(h)); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to read snapshot table"); goto fail; } @@ -88,6 +89,7 @@ int qcow2_read_snapshots(BlockDriverState *bs) ret = bdrv_pread(bs->file, offset, &extra, MIN(sizeof(extra), extra_data_size)); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to read snapshot table"); goto fail; } offset += extra_data_size; @@ -107,6 +109,7 @@ int qcow2_read_snapshots(BlockDriverState *bs) sn->id_str = g_malloc(id_str_size + 1); ret = bdrv_pread(bs->file, offset, sn->id_str, id_str_size); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to read snapshot table"); goto fail; } offset += id_str_size; @@ -116,6 +119,7 @@ int qcow2_read_snapshots(BlockDriverState *bs) sn->name = g_malloc(name_size + 1); ret = bdrv_pread(bs->file, offset, sn->name, name_size); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to read snapshot table"); goto fail; } offset += name_size; @@ -123,6 +127,7 @@ int qcow2_read_snapshots(BlockDriverState *bs) if (offset - s->snapshots_offset > QCOW_MAX_SNAPSHOTS_SIZE) { ret = -EFBIG; + error_setg(errp, "Snapshot table is too big"); goto fail; } } |