From patchwork Mon Aug 3 09:46:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Filip Bozuta X-Patchwork-Id: 1340251 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=syrmia.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=syrmia.com header.i=@syrmia.com header.a=rsa-sha256 header.s=selector1 header.b=F0g0cizc; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4BKtMy0BVTz9sTd for ; Mon, 3 Aug 2020 19:47:26 +1000 (AEST) Received: from localhost ([::1]:60376 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k2X3z-0003oI-Oa for incoming@patchwork.ozlabs.org; Mon, 03 Aug 2020 05:47:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43830) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k2X3X-0003lr-HS for qemu-devel@nongnu.org; Mon, 03 Aug 2020 05:46:55 -0400 Received: from mail-eopbgr10121.outbound.protection.outlook.com ([40.107.1.121]:11844 helo=EUR02-HE1-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k2X3V-0008SR-V6 for qemu-devel@nongnu.org; Mon, 03 Aug 2020 05:46:55 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=BSTnyr/AeR2jZHdkKiUDjoU7YD7ZONZFElJRbrJKw2gg6RIAh8eGzm+ydLG/VTVW358Ib0PL6c0a9XTX+x9qAYNjyV9mG9fUvhVA5QAy7PmA+Ps4HFJlrc2S2pTsQY0FkIOlLQVGP1xpyEbbxD8q+H59/Ly2UajjxGuCoS1h4EZNQ/T+WOZ0PB5FFkEfAqEO4DLL76+AKGOt/vNEzQnAweIFY9cQIApm+rBdZP0tvIaeA1H6GNdj9ltofePsj9rkKGChSCO0aNpBV3Kb++rjHLyUK2XvMwwgXokN6SReMkv2pYeCd23f7Fmq0RIRYDiNgVrfD59BT+1Ekbj5qsAMOg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=K7PalCj7fTPERZKm3xED+YdcUAhFgc9h8BqdiUhbaTQ=; b=J8AiMvDIw8v2fK2GlSMmTtyDjnR71qZCBfK/FVDZWn3v95Idno0T9aVYHoe9igmO4gqtV3QCfzfE4pPUJ//pQGwJ31YaKBbGhW8Zd62jf8Bc9GA6M4Gh2XQvHdxaL03syAW2XR8UckW1OXAiNyLYZhCEBdHmhEJuzyRPk3EnDu2149Bn7VkGAn9zp+/pflVHWn/76ZvOi8ZXN0a09oClfY960aAJi9sxuohgMQVIIwvp8k1EQeiEFyoPN/1wJAV52nahiepOV1KbBfqeEpXFcT6VwfvOlH6e5XHFed76ep8X7UuHxemPqy8YP5IyLOWW1/0adS//qde4q0+DuMkVew== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=syrmia.com; dmarc=pass action=none header.from=syrmia.com; dkim=pass header.d=syrmia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=syrmia.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=K7PalCj7fTPERZKm3xED+YdcUAhFgc9h8BqdiUhbaTQ=; b=F0g0cizcpJ1ZuLvZtE9aIxOPenKRmnUNJhmRNSac9sOQTVaZErumNIwBGX29lHC2s1oxpBEKerLOf2BTHMeazshnSSG8JrLIQFS3cqGbNPC2YQlUh3TbhLoZ/XxLW47ro9SuQr82zrDsbEXsvv1hT5EdkVVEZlljBR7J2oawOHk= Authentication-Results: nongnu.org; dkim=none (message not signed) header.d=none;nongnu.org; dmarc=none action=none header.from=syrmia.com; Received: from AM6PR03MB5233.eurprd03.prod.outlook.com (2603:10a6:20b:d1::19) by AM6PR03MB5457.eurprd03.prod.outlook.com (2603:10a6:20b:cb::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3239.20; Mon, 3 Aug 2020 09:46:46 +0000 Received: from AM6PR03MB5233.eurprd03.prod.outlook.com ([fe80::98f0:b948:78a8:f618]) by AM6PR03MB5233.eurprd03.prod.outlook.com ([fe80::98f0:b948:78a8:f618%7]) with mapi id 15.20.3239.021; Mon, 3 Aug 2020 09:46:45 +0000 From: Filip Bozuta To: qemu-devel@nongnu.org Subject: [PATCH v2 2/8] linux-user: Add support for a group of btrfs ioctls used for snapshots Date: Mon, 3 Aug 2020 11:46:23 +0200 Message-Id: <20200803094629.21898-3-Filip.Bozuta@syrmia.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200803094629.21898-1-Filip.Bozuta@syrmia.com> References: <20200803094629.21898-1-Filip.Bozuta@syrmia.com> X-ClientProxiedBy: GV0P278CA0051.CHEP278.PROD.OUTLOOK.COM (2603:10a6:710:29::20) To AM6PR03MB5233.eurprd03.prod.outlook.com (2603:10a6:20b:d1::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (147.91.217.238) by GV0P278CA0051.CHEP278.PROD.OUTLOOK.COM (2603:10a6:710:29::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3239.19 via Frontend Transport; Mon, 3 Aug 2020 09:46:45 +0000 X-Mailer: git-send-email 2.25.1 X-Originating-IP: [147.91.217.238] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 2ee22879-21e4-4908-d8bb-08d83792228a X-MS-TrafficTypeDiagnostic: AM6PR03MB5457: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: j1QMqQnWu24wZULaUZ80MRlrlPgsDx9HCuGLhRb22UK305+QcmUadhjZvg0KKRSKavxEizIC0l5KvPz7fPwFOZneucER2wh3akk+xKbaE4EjDOsDV4FVAmuD4VfkV+1qV0457j1bZ9W6sspE4wB8Xkb+xpx0hwsaNB6itH8dJBI2K6ntpsZrvC2j/PKbz9Hr5Acy+si97dX8sXSx061T9n4IDYFepg8jsxDw6NSPgS63D/9IVUcZP6hPl6saAeu7O5KL+Nmy8yNgyB4M5koyQssQ7GswBRlq0SBF0+MCoK/0ebEooyLMIcXK2ZLMhYIuK/3Ptn3OW39rubcqmdyRJyE+fiOeu5gWuk3s4osfFmQYvyvI3dbMa0RIQ/vVf4ZN X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:AM6PR03MB5233.eurprd03.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:(396003)(376002)(39830400003)(346002)(136003)(366004)(66946007)(6486002)(6512007)(6506007)(66556008)(66476007)(1076003)(6916009)(86362001)(186003)(8676002)(2906002)(316002)(26005)(69590400007)(8936002)(16526019)(36756003)(107886003)(956004)(2616005)(52116002)(83380400001)(54906003)(6666004)(4326008)(5660300002)(508600001); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: syrmia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2ee22879-21e4-4908-d8bb-08d83792228a X-MS-Exchange-CrossTenant-AuthSource: AM6PR03MB5233.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Aug 2020 09:46:45.8642 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 19214a73-c1ab-4e19-8f59-14bdcb09a66e X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: XrhG/AkFDX2ScplztyXF6b48UFD4qCJoOJN7qOjH++yKZJGId//JSHb1FgZmNN1j3iH+Ft/13u63I3uPdc3urA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR03MB5457 Received-SPF: pass client-ip=40.107.1.121; envelope-from=Filip.Bozuta@syrmia.com; helo=EUR02-HE1-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/03 05:46:49 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: 10 X-Spam_score: 1.0 X-Spam_bar: + X-Spam_report: (1.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-1, RCVD_IN_SBL_CSS=3.335, RCVD_IN_SORBS_WEB=1.5, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=no autolearn_force=no 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: Riku Voipio , Laurent Vivier , Filip Bozuta Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This patch implements functionality for following ioctls: BTRFS_IOC_SNAP_CREATE - Creating a subvolume snapshot Create a snapshot of a btrfs subvolume. The snapshot is created using the ioctl's third argument that is a pointer to a 'struct btrfs_ioctl_vol_args' (which was mentioned in the previous patch). Before calling this ioctl, the fields of the structure should be filled with aproppriate values for the file descriptor and path of the subvolume for which the snapshot is to be created. BTRFS_IOC_SNAP_DESTROY - Removing a subvolume snapshot Delete a snapshot of a btrfs subvolume. The snapshot is deleted using the ioctl's third argument that is a pointer to a 'struct btrfs_ioctl_vol_args' (which was mentioned in the previous patch). Before calling this ioctl, the fields of the structure should be filled with aproppriate values for the file descriptor and path of the subvolume for which the snapshot is to be deleted. Implementation notes: Since the thunk type 'struct btrfs_ioctl_vol_args' is defined in the previous patch, the implementation for these ioctls was straightforward. Signed-off-by: Filip Bozuta Reviewed-by: Laurent Vivier --- linux-user/ioctls.h | 8 ++++++++ linux-user/syscall_defs.h | 2 ++ 2 files changed, 10 insertions(+) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 544184ff95..2422675dd0 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -174,10 +174,18 @@ IOCTL(FS_IOC32_GETVERSION, IOC_R, MK_PTR(TYPE_INT)) IOCTL(FS_IOC32_SETVERSION, IOC_W, MK_PTR(TYPE_INT)) +#ifdef BTRFS_IOC_SNAP_CREATE + IOCTL(BTRFS_IOC_SNAP_CREATE, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) +#endif #ifdef BTRFS_IOC_SUBVOL_CREATE IOCTL(BTRFS_IOC_SUBVOL_CREATE, IOC_W, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) #endif +#ifdef BTRFS_IOC_SNAP_DESTROY + IOCTL(BTRFS_IOC_SNAP_DESTROY, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) +#endif #ifdef BTRFS_IOC_SUBVOL_GETFLAGS IOCTL(BTRFS_IOC_SUBVOL_GETFLAGS, IOC_R, MK_PTR(TYPE_ULONGLONG)) #endif diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 67a3c110b6..16966c323f 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -968,7 +968,9 @@ struct target_rtc_pll_info { #define TARGET_FS_IOC32_SETVERSION TARGET_IOW('v', 2, int) /* btrfs ioctls */ +#define TARGET_BTRFS_IOC_SNAP_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 1) #define TARGET_BTRFS_IOC_SUBVOL_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 14) +#define TARGET_BTRFS_IOC_SNAP_DESTROY TARGET_IOWU(BTRFS_IOCTL_MAGIC, 15) #define TARGET_BTRFS_IOC_SUBVOL_GETFLAGS TARGET_IOR(BTRFS_IOCTL_MAGIC, 25,\ abi_ullong) #define TARGET_BTRFS_IOC_SUBVOL_SETFLAGS TARGET_IOW(BTRFS_IOCTL_MAGIC, 26,\