[Qemu-devel] [PATCH v3 15/21] blkdebug: Make filename optional

[Max Reitz <mreitz@redhat.com>]

There is no problem in giving no filename; in this case, it has to be
specified through the "image" option.

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 block/blkdebug.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/block/blkdebug.c b/block/blkdebug.c
index b032fff..6b59216 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -327,8 +327,10 @@ static void blkdebug_parse_filename(const char *filename, QDict *options,
     /* Parse the blkdebug: prefix */
     if (!strstart(filename, "blkdebug:", &filename)) {
         /* There was no prefix; therefore, all options have to be already
-           present in the QDict (except for the filename) */
-        qdict_put(options, "x-image", qstring_from_str(filename));
+           present in the QDict; if a filename is given, pass it */
+        if (filename) {
+            qdict_put(options, "x-image", qstring_from_str(filename));
+        }
         return;
     }
 
-- 
1.8.5.1