diff options
Diffstat (limited to 'include/block')
| -rw-r--r-- | include/block/block_int.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h index a498c2670b..d6415b53c1 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -1165,9 +1165,24 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs, void *opaque, Error **errp); void bdrv_root_unref_child(BdrvChild *child); +/** + * Sets a BdrvChild's permissions. Avoid if the parent is a BDS; use + * bdrv_child_refresh_perms() instead and make the parent's + * .bdrv_child_perm() implementation return the correct values. + */ int bdrv_child_try_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared, Error **errp); +/** + * Calls bs->drv->bdrv_child_perm() and updates the child's permission + * masks with the result. + * Drivers should invoke this function whenever an event occurs that + * makes their .bdrv_child_perm() implementation return different + * values than before, but which will not result in the block layer + * automatically refreshing the permissions. + */ +int bdrv_child_refresh_perms(BlockDriverState *bs, BdrvChild *c, Error **errp); + /* Default implementation for BlockDriver.bdrv_child_perm() that can be used by * block filters: Forward CONSISTENT_READ, WRITE, WRITE_UNCHANGED and RESIZE to * all children */ |