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block: Allow reference for bdrv_file_open()

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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
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2
block/qcow2.c
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@ -1483,7 +1483,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
return ret;
}
ret = bdrv_file_open(&bs, filename, NULL, BDRV_O_RDWR, &local_err);
ret = bdrv_file_open(&bs, filename, NULL, NULL, BDRV_O_RDWR, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return ret;