| Message ID | 20200429141126.85159-4-mreitz@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v2,1/4] block: Add bdrv_make_empty() | expand |
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 0917663d89..8203d7f6f9 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -266,4 +266,6 @@ int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, int64_t off_in, const BdrvChild *blk_root(BlockBackend *blk); +int blk_make_empty(BlockBackend *blk, Error **errp); + #endif diff --git a/block/block-backend.c b/block/block-backend.c index f4944861fa..47bd56244d 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -2402,3 +2402,13 @@ const BdrvChild *blk_root(BlockBackend *blk) { return blk->root; } + +int blk_make_empty(BlockBackend *blk, Error **errp) +{ + if (!blk_is_available(blk)) { + error_setg(errp, "No medium inserted"); + return -ENOMEDIUM; + } + + return bdrv_make_empty(blk->root, errp); +}
Two callers of BlockDriver.bdrv_make_empty() remain that should not call this method directly. Both do not have access to a BdrvChild, but they can use a BlockBackend, so we add this function that lets them use it. Signed-off-by: Max Reitz <mreitz@redhat.com> --- include/sysemu/block-backend.h | 2 ++ block/block-backend.c | 10 ++++++++++ 2 files changed, 12 insertions(+)