@@ -146,6 +146,11 @@ int bdrv_snapshot_create(BlockDriverState *bs,
if (!drv) {
return -ENOMEDIUM;
}
+
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) {
+ return -EPERM;
+ }
+
if (drv->bdrv_snapshot_create) {
return drv->bdrv_snapshot_create(bs, sn_info);
}
@@ -215,6 +220,12 @@ int bdrv_snapshot_delete(BlockDriverState *bs,
error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, bdrv_get_device_name(bs));
return -ENOMEDIUM;
}
+
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE,
+ errp)) {
+ return -EPERM;
+ }
+
if (!snapshot_id && !name) {
error_setg(errp, "snapshot_id and name are both NULL");
return -EINVAL;
@@ -1536,6 +1536,10 @@ void qmp_change_blockdev(const char *device, const char *filename,
return;
}
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) {
+ return;
+ }
+
if (format) {
drv = bdrv_find_whitelisted_format(format, bs->read_only);
if (!drv) {
@@ -1684,6 +1688,10 @@ void qmp_block_resize(const char *device, int64_t size, Error **errp)
return;
}
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, errp)) {
+ return;
+ }
+
if (size < 0) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size");
return;
Before operate on a BlockDriverState, respective types are checked against bs->op_blockers and it will error out if there's a blocker. Signed-off-by: Fam Zheng <famz@redhat.com> --- block/snapshot.c | 11 +++++++++++ blockdev.c | 8 ++++++++ 2 files changed, 19 insertions(+)