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Violators will be prosecuted; Tue, 7 Mar 2017 21:15:44 -0500 Received: from b03ledav004.gho.boulder.ibm.com (b03ledav004.gho.boulder.ibm.com [9.17.130.235]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v282FhaH8520160; Tue, 7 Mar 2017 19:15:43 -0700 Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7F08278047; Tue, 7 Mar 2017 19:15:43 -0700 (MST) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP id 2764278037; Tue, 7 Mar 2017 19:15:42 -0700 (MST) From: Dong Jia Shi To: qemu-block@nongnu.org, kwolf@redhat.com, mreitz@redhat.com Date: Wed, 8 Mar 2017 03:15:33 +0100 X-Mailer: git-send-email 2.8.4 In-Reply-To: <20170308021533.78292-1-bjsdjshi@linux.vnet.ibm.com> References: <20170308021533.78292-1-bjsdjshi@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17030802-2213-0000-0000-000001490FFF X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00006742; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000206; SDB=6.00831480; UDB=6.00407948; IPR=6.00609072; BA=6.00005194; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00014550; XFM=3.00000012; UTC=2017-03-08 02:15:46 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17030802-2214-0000-0000-000054734B52 Message-Id: <20170308021533.78292-2-bjsdjshi@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-03-08_01:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1703080016 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH RFC 1/1] block: Handle NULL options correctly in raw_open X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: cornelia.huck@de.ibm.com, bjsdjshi@linux.vnet.ibm.com, pasic@linux.vnet.ibm.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" A normal call for raw_open should always pass in a non-NULL @options, but for some certain cases (e.g. trying to applying snapshot on a RBD image), they call raw_open with a NULL @options right after the calling for raw_close. Let's take the NULL @options as a sign of trying to do raw_open again, and just simply return a success code. Signed-off-by: Dong Jia Shi --- block/raw-format.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/block/raw-format.c b/block/raw-format.c index 86fbc65..ee05730 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -384,6 +384,14 @@ static int raw_open(BlockDriverState *bs, QDict *optio= ns, int flags, BDRVRawState *s =3D bs->opaque; int ret; =20 + /* + * Notice: + * NULL options is only sensible when applying a snapshot. + */ + if (!options) { + return 0; + } + bs->file =3D bdrv_open_child(NULL, options, "file", bs, &child_file, false, errp); if (!bs->file) { --=20 2.8.4