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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2021-08-24 11:38:24 +0300 |
|---|---|---|
| committer | Hanna Reitz <hreitz@redhat.com> | 2021-09-01 12:57:31 +0200 |
| commit | ed089506eeb44fd7f7f385a9172e51b198ae489d (patch) | |
| tree | fc460516ab9e37c862f4781d8e72cb647bea2ea1 | |
| parent | bd8f4c42c8547a74b0f92dc17af93c3247c69f18 (diff) | |
| download | qemu-ed089506eeb44fd7f7f385a9172e51b198ae489d.zip qemu-ed089506eeb44fd7f7f385a9172e51b198ae489d.tar.gz qemu-ed089506eeb44fd7f7f385a9172e51b198ae489d.tar.bz2 | |
block: introduce blk_replace_bs
Add function to change bs inside blk.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-3-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
| -rw-r--r-- | block/block-backend.c | 8 | ||||
| -rw-r--r-- | include/sysemu/block-backend.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/block/block-backend.c b/block/block-backend.c index deb55c2..6140d13 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -870,6 +870,14 @@ int blk_insert_bs(BlockBackend *blk, BlockDriverState *bs, Error **errp) } /* + * 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. */ int blk_set_perm(BlockBackend *blk, uint64_t perm, uint64_t shared_perm, diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 9ac5f7b..29d4fdb 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, |