block: Allow reference for bdrv_file_open()

Allow specifying a reference to an existing block device (by name) for
bdrv_file_open() instead of a filename and/or options.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2013-12-20 19:28:08 +01:00 committed by Kevin Wolf
parent 89f2b21e36
commit 72daa72eee
12 changed files with 41 additions and 19 deletions

View file

@ -403,7 +403,7 @@ static int blkdebug_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
ret = bdrv_file_open(&bs->file, filename, NULL, flags, &local_err);
ret = bdrv_file_open(&bs->file, filename, NULL, NULL, flags, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto fail;