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block: introducing 'bdrv_co_delete_file' interface

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Adding to Block Drivers the capability of being able to clean up
its created files can be useful in certain situations. For the
LUKS driver, for instance, a failure in one of its authentication
steps can leave files in the host that weren't there before.

This patch adds the 'bdrv_co_delete_file' interface to block
drivers and add it to the 'file' driver in file-posix.c. The
implementation is given by 'raw_co_delete_file'.

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200130213907.2830642-2-danielhb413@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Daniel Henrique Barboza 2020-01-30 18:39:04 -03:00 • committed by Kevin Wolf
parent 6e1da96b94
commit 9bffae14df
2 changed files with 27 additions and 0 deletions
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4
include/block/block_int.h
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@ -314,6 +314,10 @@ struct BlockDriver {
*/
int coroutine_fn (*bdrv_co_flush)(BlockDriverState *bs);
/* Delete a created file. */
int coroutine_fn (*bdrv_co_delete_file)(BlockDriverState *bs,
Error **errp);
/*
* Flushes all data that was already written to the OS all the way down to
* the disk (for example file-posix.c calls fsync()).