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author | Kevin Wolf <kwolf@redhat.com> | 2013-04-12 20:27:07 +0200 |
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committer | Kevin Wolf <kwolf@redhat.com> | 2013-04-22 11:37:12 +0200 |
commit | 1cb6f506444ddf00bb163e5ffa28ab1051b65642 (patch) | |
tree | 9b7339e0c47e76046ce1da446060b7feea489e85 | |
parent | 56d1b4d21d444619302d3f1291a133b1c2b9b072 (diff) | |
download | hqemu-1cb6f506444ddf00bb163e5ffa28ab1051b65642.zip hqemu-1cb6f506444ddf00bb163e5ffa28ab1051b65642.tar.gz |
block: Allow overriding backing.file.filename
If a filename is passed in the driver-specific options from the command
line, the backing file path from the image is ignored now.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
-rw-r--r-- | block.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -889,7 +889,9 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *options) } bs->open_flags &= ~BDRV_O_NO_BACKING; - if (bs->backing_file[0] == '\0' && qdict_size(options) == 0) { + if (qdict_haskey(options, "file.filename")) { + backing_filename[0] = '\0'; + } else if (bs->backing_file[0] == '\0' && qdict_size(options) == 0) { QDECREF(options); return 0; } |