From: Vladimir Sementsov-Ogievskiy Date: Tue, 24 Aug 2021 08:38:24 +0000 (+0300) Subject: block: introduce blk_replace_bs X-Git-Tag: v6.2.0-rc0~121^2~34 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ed089506eeb44fd7f7f385a9172e51b198ae489d;p=thirdparty%2Fqemu.git block: introduce blk_replace_bs Add function to change bs inside blk. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Max Reitz Message-Id: <20210824083856.17408-3-vsementsov@virtuozzo.com> Signed-off-by: Hanna Reitz --- diff --git a/block/block-backend.c b/block/block-backend.c index deb55c272ea..6140d133e27 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -869,6 +869,14 @@ int blk_insert_bs(BlockBackend *blk, BlockDriverState *bs, Error **errp) return 0; } +/* + * Change BlockDriverState associated with @blk. + */ +int blk_replace_bs(BlockBackend *blk, BlockDriverState *new_bs, Error **errp) +{ + return bdrv_replace_child_bs(blk->root, new_bs, errp); +} + /* * Sets the permission bitmasks that the user of the BlockBackend needs. */ diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 9ac5f7bbd3a..29d4fdbf63f 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -102,6 +102,7 @@ BlockBackend *blk_by_public(BlockBackendPublic *public); BlockDriverState *blk_bs(BlockBackend *blk); void blk_remove_bs(BlockBackend *blk); int blk_insert_bs(BlockBackend *blk, BlockDriverState *bs, Error **errp); +int blk_replace_bs(BlockBackend *blk, BlockDriverState *new_bs, Error **errp); bool bdrv_has_blk(BlockDriverState *bs); bool bdrv_is_root_node(BlockDriverState *bs); int blk_set_perm(BlockBackend *blk, uint64_t perm, uint64_t shared_perm,