diff --git a/block.c b/block.c index 700431d5e935e1c592ef09f61f73c8cec615a4e5..1d441651c94a5c23f324daa120163b927bff0a31 100644 --- a/block.c +++ b/block.c @@ -4880,3 +4880,25 @@ void bdrv_del_child(BlockDriverState *parent_bs, BdrvChild *child, Error **errp) parent_bs->drv->bdrv_del_child(parent_bs, child, errp); } + +bool bdrv_can_store_new_dirty_bitmap(BlockDriverState *bs, const char *name, + uint32_t granularity, Error **errp) +{ + BlockDriver *drv = bs->drv; + + if (!drv) { + error_setg_errno(errp, ENOMEDIUM, + "Can't store persistent bitmaps to %s", + bdrv_get_device_or_node_name(bs)); + return false; + } + + if (!drv->bdrv_can_store_new_dirty_bitmap) { + error_setg_errno(errp, ENOTSUP, + "Can't store persistent bitmaps to %s", + bdrv_get_device_or_node_name(bs)); + return false; + } + + return drv->bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp); +} diff --git a/include/block/block.h b/include/block/block.h index 2d637d1da898c7322e74b9f80a280cc792d79283..f0fdbe8006c7e8e876b3b5aa56c2f1ec335beaf0 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -617,4 +617,7 @@ void bdrv_add_child(BlockDriverState *parent, BlockDriverState *child, Error **errp); void bdrv_del_child(BlockDriverState *parent, BdrvChild *child, Error **errp); +bool bdrv_can_store_new_dirty_bitmap(BlockDriverState *bs, const char *name, + uint32_t granularity, Error **errp); + #endif diff --git a/include/block/block_int.h b/include/block/block_int.h index 254f860972de670aa50ebe9ba9dc8e55d3c27e4a..c9e29bf65e3abfa368f4d307aa0e529bc1332fe1 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -387,6 +387,10 @@ struct BlockDriver { * field of BlockDirtyBitmap's in case of success. */ int (*bdrv_reopen_bitmaps_rw)(BlockDriverState *bs, Error **errp); + bool (*bdrv_can_store_new_dirty_bitmap)(BlockDriverState *bs, + const char *name, + uint32_t granularity, + Error **errp); QLIST_ENTRY(BlockDriver) list; };