From nobody Tue Feb 10 05:39:44 2026 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=virtuozzo.com ARC-Seal: i=1; a=rsa-sha256; t=1589295778; cv=none; d=zohomail.com; s=zohoarc; b=jEdMrjDB04djVjWW8kNMlqhUHRtQflmiGrDUsZBQ6vEDFoCBwIE1WoMqGoGzL5XEKk0AEcC9FNc1H7A21fWRYBhpWdDl/kU23r8sqQ4IwD+eXjTJZXXXf2k67bHZWudmKwPB3R98aXi2TtHehZQIbmfGl+kMuMWap0rUr5e4VUI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1589295778; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=0cx8uO79+EWIEka8n7t85aqOrEHz3/5CRiBzdBRx8Aw=; b=kyVQ637idyzqyB/6XmVf90v7tEvBr6jEK7CxHf6bW3Y2cmfo6iit/HNjJ4sTZN9LRYr7YJ2MFVV8+JEKIZvIyJ9RdDcdKdlFAb7irSrViJ0Ll5Yivy68oAaTY4ex4yFwfxHOUKHLgbvjze3XWq31qXardBXK8GqSpd7qHNYZbPs= ARC-Authentication-Results: i=1; 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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1589295778486686.5627092672187; Tue, 12 May 2020 08:02:58 -0700 (PDT) Received: from localhost ([::1]:55168 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jYWQr-0005lu-Lf for importer@patchew.org; Tue, 12 May 2020 11:02:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60560) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jYWI1-0005eS-VP; Tue, 12 May 2020 10:53:50 -0400 Received: from relay.sw.ru ([185.231.240.75]:45860) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jYWI0-0005p0-L6; Tue, 12 May 2020 10:53:49 -0400 Received: from dhcp-172-16-25-136.sw.ru ([172.16.25.136] helo=localhost.sw.ru) by relay.sw.ru with esmtp (Exim 4.92.3) (envelope-from ) id 1jYWHa-0003c8-5m; Tue, 12 May 2020 17:53:22 +0300 From: Andrey Shinkevich To: qemu-block@nongnu.org Subject: [PATCH v3 10/15] copy-on-read: Support change filename functions Date: Tue, 12 May 2020 17:53:11 +0300 Message-Id: <1589295196-773454-11-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1589295196-773454-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1589295196-773454-1-git-send-email-andrey.shinkevich@virtuozzo.com> 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=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/12 10:53:25 X-ACL-Warn: Detected OS = Linux 3.1-3.10 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_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, fam@euphon.net, vsementsov@virtuozzo.com, armbru@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org, mreitz@redhat.com, jsnow@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The COR-filter driver should support a redirecting function to refresh filenames. Otherwise, a file name of the filter will be copied instead of the one of a data node. It is also true for the function bdrv_change_backing_file(). Signed-off-by: Andrey Shinkevich --- block/copy-on-read.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/block/copy-on-read.c b/block/copy-on-read.c index c4fa468..74e01ee 100644 --- a/block/copy-on-read.c +++ b/block/copy-on-read.c @@ -21,6 +21,7 @@ */ =20 #include "qemu/osdep.h" +#include "qemu/cutils.h" #include "block/block_int.h" #include "qemu/module.h" =20 @@ -128,6 +129,21 @@ static void cor_lock_medium(BlockDriverState *bs, bool= locked) } =20 =20 +static void cor_refresh_filename(BlockDriverState *bs) +{ + pstrcpy(bs->exact_filename, sizeof(bs->exact_filename), + bs->file->bs->filename); +} + + +static int cor_change_backing_file(BlockDriverState *bs, + const char *backing_file, + const char *backing_fmt) +{ + return bdrv_change_backing_file(bs->file->bs, backing_file, backing_fm= t); +} + + static BlockDriver bdrv_copy_on_read =3D { .format_name =3D "copy-on-read", =20 @@ -146,6 +162,8 @@ static BlockDriver bdrv_copy_on_read =3D { .bdrv_lock_medium =3D cor_lock_medium, =20 .bdrv_co_block_status =3D bdrv_co_block_status_from_file, + .bdrv_refresh_filename =3D cor_refresh_filename, + .bdrv_change_backing_file =3D cor_change_backing_file, =20 .has_variable_length =3D true, .is_filter =3D true, --=20 1.8.3.1