This will be needed to check some restrictions before making bitmap persistent in qmp-block-dirty-bitmap-add (this functionality will be added by future patch)
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com> Reviewed-by: Max Reitz <mre...@redhat.com> Reviewed-by: John Snow <js...@redhat.com> --- block.c | 22 ++++++++++++++++++++++ include/block/block.h | 3 +++ include/block/block_int.h | 5 +++++ 3 files changed, 30 insertions(+) diff --git a/block.c b/block.c index 16cf522219..cf9919a5e0 100644 --- a/block.c +++ b/block.c @@ -4093,3 +4093,25 @@ 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 4e81f2069b..93718ab245 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -551,4 +551,7 @@ 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 2d92d7edfe..f943a7c24e 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -320,6 +320,11 @@ struct BlockDriver { 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); + QLIST_ENTRY(BlockDriver) list; }; -- 2.11.1