From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50401) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bMbfp-0002CI-Mi for qemu-devel@nongnu.org; Mon, 11 Jul 2016 09:55:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bMbfo-000665-Py for qemu-devel@nongnu.org; Mon, 11 Jul 2016 09:55:01 -0400 From: Max Reitz Date: Mon, 11 Jul 2016 15:54:52 +0200 Message-Id: <20160711135452.11304-1-mreitz@redhat.com> Subject: [Qemu-devel] [PATCH] vvfat: Fix qcow write target driver specification List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, Max Reitz , Kevin Wolf 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 --- 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; -- 2.9.0