From: Daniel Henrique Barboza <[email protected]> Using the new 'bdrv_co_delete_file' interface, a pure co_routine function 'bdrv_co_delete_file' inside block.c can can be used in a way similar of the existing bdrv_create_file to to clean up a created file.
We're creating a pure co_routine because the only caller of 'bdrv_co_delete_file' will be already in co_routine context, thus there is no need to add all the machinery to check for qemu_in_coroutine() and create a separated co_routine to do the job. Suggested-by: Daniel P. Berrangé <[email protected]> Signed-off-by: Daniel Henrique Barboza <[email protected]> Message-Id: <[email protected]> Signed-off-by: Kevin Wolf <[email protected]> --- include/block/block.h | 1 + block.c | 26 ++++++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/include/block/block.h b/include/block/block.h index cd6b5b95aa..e569a4d747 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -363,6 +363,7 @@ bool bdrv_is_backing_chain_frozen(BlockDriverState *bs, BlockDriverState *base, int bdrv_freeze_backing_chain(BlockDriverState *bs, BlockDriverState *base, Error **errp); void bdrv_unfreeze_backing_chain(BlockDriverState *bs, BlockDriverState *base); +int coroutine_fn bdrv_co_delete_file(BlockDriverState *bs, Error **errp); typedef struct BdrvCheckResult { diff --git a/block.c b/block.c index 8fc7b56937..a2542c977b 100644 --- a/block.c +++ b/block.c @@ -668,6 +668,32 @@ int bdrv_create_file(const char *filename, QemuOpts *opts, Error **errp) } } +int coroutine_fn bdrv_co_delete_file(BlockDriverState *bs, Error **errp) +{ + Error *local_err = NULL; + int ret; + + assert(bs != NULL); + + if (!bs->drv) { + error_setg(errp, "Block node '%s' is not opened", bs->filename); + return -ENOMEDIUM; + } + + if (!bs->drv->bdrv_co_delete_file) { + error_setg(errp, "Driver '%s' does not support image deletion", + bs->drv->format_name); + return -ENOTSUP; + } + + ret = bs->drv->bdrv_co_delete_file(bs, &local_err); + if (ret < 0) { + error_propagate(errp, local_err); + } + + return ret; +} + /** * Try to get @bs's logical and physical block size. * On success, store them in @bsz struct and return 0. -- 2.20.1
