diff options
Diffstat (limited to 'block.c')
| -rw-r--r-- | block.c | 11 |
1 files changed, 7 insertions, 4 deletions
@@ -246,7 +246,8 @@ bool bdrv_is_writable(BlockDriverState *bs) return !bdrv_is_read_only(bs) && !(bs->open_flags & BDRV_O_INACTIVE); } -int bdrv_can_set_read_only(BlockDriverState *bs, bool read_only, Error **errp) +int bdrv_can_set_read_only(BlockDriverState *bs, bool read_only, + bool ignore_allow_rdw, Error **errp) { /* Do not set read_only if copy_on_read is enabled */ if (bs->copy_on_read && read_only) { @@ -256,7 +257,9 @@ int bdrv_can_set_read_only(BlockDriverState *bs, bool read_only, Error **errp) } /* Do not clear read_only if it is prohibited */ - if (!read_only && !(bs->open_flags & BDRV_O_ALLOW_RDWR)) { + if (!read_only && !(bs->open_flags & BDRV_O_ALLOW_RDWR) && + !ignore_allow_rdw) + { error_setg(errp, "Node '%s' is read only", bdrv_get_device_or_node_name(bs)); return -EPERM; @@ -269,7 +272,7 @@ int bdrv_set_read_only(BlockDriverState *bs, bool read_only, Error **errp) { int ret = 0; - ret = bdrv_can_set_read_only(bs, read_only, errp); + ret = bdrv_can_set_read_only(bs, read_only, false, errp); if (ret < 0) { return ret; } @@ -2907,7 +2910,7 @@ int bdrv_reopen_prepare(BDRVReopenState *reopen_state, BlockReopenQueue *queue, * to r/w. Attempting to set to r/w may fail if either BDRV_O_ALLOW_RDWR is * not set, or if the BDS still has copy_on_read enabled */ read_only = !(reopen_state->flags & BDRV_O_RDWR); - ret = bdrv_can_set_read_only(reopen_state->bs, read_only, &local_err); + ret = bdrv_can_set_read_only(reopen_state->bs, read_only, true, &local_err); if (local_err) { error_propagate(errp, local_err); goto error; |