diff options
Diffstat (limited to 'block/qcow2-snapshot.c')
| -rw-r--r-- | block/qcow2-snapshot.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c index 5ae3407..a6ffae8 100644 --- a/block/qcow2-snapshot.c +++ b/block/qcow2-snapshot.c @@ -353,6 +353,10 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) return -EFBIG; } + if (has_data_file(bs)) { + return -ENOTSUP; + } + memset(sn, 0, sizeof(*sn)); /* Generate an ID */ @@ -466,6 +470,10 @@ int qcow2_snapshot_goto(BlockDriverState *bs, const char *snapshot_id) int ret; uint64_t *sn_l1_table = NULL; + if (has_data_file(bs)) { + return -ENOTSUP; + } + /* Search the snapshot */ snapshot_index = find_snapshot_by_id_or_name(bs, snapshot_id); if (snapshot_index < 0) { @@ -599,6 +607,10 @@ int qcow2_snapshot_delete(BlockDriverState *bs, QCowSnapshot sn; int snapshot_index, ret; + if (has_data_file(bs)) { + return -ENOTSUP; + } + /* Search the snapshot */ snapshot_index = find_snapshot_by_id_and_name(bs, snapshot_id, name); if (snapshot_index < 0) { @@ -670,6 +682,9 @@ int qcow2_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab) QCowSnapshot *sn; int i; + if (has_data_file(bs)) { + return -ENOTSUP; + } if (!s->nb_snapshots) { *psn_tab = NULL; return s->nb_snapshots; |