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| author | Max Reitz <mreitz@redhat.com> | 2014-11-26 17:20:26 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2015-01-13 11:47:56 +0000 |
| commit | 9f07429e8873124c588847b0d499cb32b9410bdd (patch) | |
| tree | f5de29af3815e86167edb769feddd6013ab32d12 /block | |
| parent | 0a82855a1a819f3de49781d42728f485fbd64284 (diff) | |
| download | qemu-9f07429e8873124c588847b0d499cb32b9410bdd.zip qemu-9f07429e8873124c588847b0d499cb32b9410bdd.tar.gz qemu-9f07429e8873124c588847b0d499cb32b9410bdd.tar.bz2 | |
block: JSON filenames and relative backing files
When using a relative backing file name, qemu needs to know the
directory of the top image file. For JSON filenames, such a directory
cannot be easily determined (e.g. how do you determine the directory of
a qcow2 BDS directly on top of a quorum BDS?). Therefore, do not allow
relative filenames for the backing file of BDSs only having a JSON
filename.
Furthermore, BDS::exact_filename should be used whenever possible. If
BDS::filename is not equal to BDS::exact_filename, the former will
always be a JSON object.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/qapi.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/block/qapi.c b/block/qapi.c index fa68ba7..a6fd6f7 100644 --- a/block/qapi.c +++ b/block/qapi.c @@ -214,7 +214,12 @@ void bdrv_query_image_info(BlockDriverState *bs, info->backing_filename = g_strdup(backing_filename); info->has_backing_filename = true; bdrv_get_full_backing_filename(bs, backing_filename2, - sizeof(backing_filename2)); + sizeof(backing_filename2), &err); + if (err) { + error_propagate(errp, err); + qapi_free_ImageInfo(info); + return; + } if (strcmp(backing_filename, backing_filename2) != 0) { info->full_backing_filename = |