From nobody Tue Oct 22 22:30:00 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=openvz.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 169480335812370.74762021453273; Fri, 15 Sep 2023 11:42:38 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qhDlB-0004bW-E4; Fri, 15 Sep 2023 14:41:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qhDl5-0004Rq-Mh; Fri, 15 Sep 2023 14:41:39 -0400 Received: from relay.virtuozzo.com ([130.117.225.111]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qhDl3-00037X-IA; Fri, 15 Sep 2023 14:41:39 -0400 Received: from ch-vpn.virtuozzo.com ([130.117.225.6] helo=iris.sw.ru) by relay.virtuozzo.com with esmtp (Exim 4.96) (envelope-from ) id 1qhDhe-00Fs9Q-1b; Fri, 15 Sep 2023 20:41:30 +0200 From: "Denis V. Lunev" To: qemu-block@nongnu.org, qemu-devel@nongnu.org Cc: stefanha@redhat.com, alexander.ivanov@virtuozzo.com, mike.maslenkin@gmail.com, "Denis V. Lunev" Subject: [PATCH 05/21] parallels: return earlier from parallels_open() function on error Date: Fri, 15 Sep 2023 20:41:13 +0200 Message-Id: <20230915184130.403366-7-den@openvz.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230915184130.403366-1-den@openvz.org> References: <20230915184130.403366-1-den@openvz.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=130.117.225.111; envelope-from=den@openvz.org; helo=relay.virtuozzo.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1694803358774100001 Content-Type: text/plain; charset="utf-8" At the beginning of the function we can return immediately until we really allocate s->header. Signed-off-by: Denis V. Lunev Reviewed-by: Alexander Ivanov --- block/parallels.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/block/parallels.c b/block/parallels.c index 0f127427bf..8f223bfd89 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -1084,7 +1084,7 @@ static int parallels_open(BlockDriverState *bs, QDict= *options, int flags, =20 ret =3D bdrv_pread(bs->file, 0, sizeof(ph), &ph, 0); if (ret < 0) { - goto fail; + return ret; } =20 bs->total_sectors =3D le64_to_cpu(ph.nb_sectors); @@ -1104,13 +1104,11 @@ static int parallels_open(BlockDriverState *bs, QDi= ct *options, int flags, s->tracks =3D le32_to_cpu(ph.tracks); if (s->tracks =3D=3D 0) { error_setg(errp, "Invalid image: Zero sectors per track"); - ret =3D -EINVAL; - goto fail; + return -EINVAL; } if (s->tracks > INT32_MAX/513) { error_setg(errp, "Invalid image: Too big cluster"); - ret =3D -EFBIG; - goto fail; + return -EFBIG; } s->prealloc_size =3D MAX(s->tracks, s->prealloc_size); s->cluster_size =3D s->tracks << BDRV_SECTOR_BITS; @@ -1118,16 +1116,14 @@ static int parallels_open(BlockDriverState *bs, QDi= ct *options, int flags, s->bat_size =3D le32_to_cpu(ph.bat_entries); if (s->bat_size > INT_MAX / sizeof(uint32_t)) { error_setg(errp, "Catalog too large"); - ret =3D -EFBIG; - goto fail; + return -EFBIG; } =20 size =3D bat_entry_off(s->bat_size); s->header_size =3D ROUND_UP(size, bdrv_opt_mem_align(bs->file->bs)); s->header =3D qemu_try_blockalign(bs->file->bs, s->header_size); if (s->header =3D=3D NULL) { - ret =3D -ENOMEM; - goto fail; + return -ENOMEM; } =20 ret =3D bdrv_pread(bs->file, 0, s->header_size, s->header, 0); --=20 2.34.1