From: Max Reitz <mre...@redhat.com>
First, bdrv_open_child() expects all options for the child to be
prefixed by the child's name (and a separating dot). Second,
bdrv_open_child() does not take ownership of the QDict passed to it but
only extracts all options for the child, so if a QDict is created for
the sole purpose of passing it to bdrv_open_child(), it needs to be
freed afterwards.
This patch makes vvfat adhere to both of these rules.
Signed-off-by: Max Reitz <mre...@redhat.com>
Message-id: 20160711135452.11304-1-mre...@redhat.com
Reviewed-by: Eric Blake <ebl...@redhat.com>
Reviewed-by: Kevin Wolf <kw...@redhat.com>
Signed-off-by: Max Reitz <mre...@redhat.com>
---
block/vvfat.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/block/vvfat.c b/block/vvfat.c
index c3f24c6..ba2620f 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -3018,9 +3018,10 @@ static int enable_write_target(BlockDriverState *bs,
Error **errp)
}
options = qdict_new();
- qdict_put(options, "driver", qstring_from_str("qcow"));
+ qdict_put(options, "write-target.driver", qstring_from_str("qcow"));
s->qcow = bdrv_open_child(s->qcow_filename, options, "write-target", bs,
&child_vvfat_qcow, false, errp);
+ QDECREF(options);
if (!s->qcow) {
ret = -EINVAL;
goto err;
--
1.8.3.1
