From patchwork Thu Aug 13 06:49:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 11711807 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7FD90722 for ; Thu, 13 Aug 2020 07:00:25 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 6034A20716 for ; Thu, 13 Aug 2020 07:00:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6034A20716 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=vivier.eu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:57744 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k67Ds-0006xj-H2 for patchwork-qemu-devel@patchwork.kernel.org; Thu, 13 Aug 2020 03:00:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60472) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k673e-0006hV-36 for qemu-devel@nongnu.org; Thu, 13 Aug 2020 02:49:50 -0400 Received: from mout.kundenserver.de ([212.227.17.24]:45025) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k673Q-0004cr-1q for qemu-devel@nongnu.org; Thu, 13 Aug 2020 02:49:49 -0400 Received: from localhost.localdomain ([82.252.135.186]) by mrelayeu.kundenserver.de (mreue107 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MYvLi-1kAQTk0wMq-00UrEw; Thu, 13 Aug 2020 08:49:32 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PULL 12/14] linux-user: Add support for btrfs ioctls used to manage quota Date: Thu, 13 Aug 2020 08:49:21 +0200 Message-Id: <20200813064923.263565-13-laurent@vivier.eu> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200813064923.263565-1-laurent@vivier.eu> References: <20200813064923.263565-1-laurent@vivier.eu> MIME-Version: 1.0 X-Provags-ID: V03:K1:bA7Mj79f2CF1c3iSmvIoCDdlqtxnkZnVY2fbVfWWp5kU8FhXM0l lSeLMdUKSjQr8JpoNIMpkFwyeAWyTR6PahAeZLNPN9my0PvIjULEZyl9ZmajkB5+UQ1gIPm vKpOAi4Jy2Fy/xkW7cc5JnuWZNLuR3YHOYxoywirc93qcXwCHUtBhmLzypY73FQvqYnwP7Q Dv06YHofhENyVj55qcXMw== X-UI-Out-Filterresults: notjunk:1;V03:K0:+i0yaeM1eaU=:/OB1lrqAYVEmPDxve422WW gRQJGLrDeu6lj5JQMDljogpFuFHLg0nJna9I/r8i4u82mlOli/QgH3phY//afYAGcDrG98KJJ Dtg3335d1alt/B8BZhJefyQ/zLVwO0aQuwRW6qBkqJGv8Vw4mjCM14WlDQ4OG1YijpnE9byHn 8zO0JT3+5Rpk5vgeUKQUaBF3NwpiwPtOL54kKBMufWwM8Cnld7QPDVwLzA+WryekSZqFmaqxT doQWTkc6otZ4fCDxjM5GL8f5Iao5ST5Na88aCpZEqW6pCRzU5HuyP9H8ZpymEO2isRZDuw1lU t30ICnZT0Q1bmv7mfg6CZdzKFWe4ZRChrh/sIrj02Ulazn8dlF6Bc/KARgbDI+zEDW7ARFkza pMPrBtasL7G89IoN3GxFrdmMpjOBYxO3mVCQfIo0dQTNwzwnmcp6Du/nIW5T1M64jNWX7Mdiw tTneCADcClfncwe4h3BtdruDNQJDYPR20uwfkmkB5PWw5IKuVnvZcbblpgXV9IilF5poCFW1/ h4CqxWks13d221hnvzbhL/QEotNYzoIVqm8uUdhwOet9x4/rKov9WC57AMhkwBcRrpOODjihL WnG8W89MvsmHfhZdGxRBNAwOZy+pymC/V9eIKClRqFc5iJujZR1nd/HBbMeGe0y6Px5Q7I40R 7DcN2sVyxN0IUKlHvpctbtzGrxpHPYYtqH7HEf8waUcOPjzdXGzTIOrOfpI7ixdP6mTLKpFF8 jFGF4WvHPnzzBBwW8mXSRomyusfnKOBgsAsWdagc3o1B7HsNjjDmS9/qxfhRjNx41e70AYbkZ 060ljEUhj2V+1zcNzsUnOQ49JcCclBVQe1864WbK7LT1+NZV/C0HItCaXaoYOeapgOwLHpb Received-SPF: none client-ip=212.227.17.24; envelope-from=laurent@vivier.eu; helo=mout.kundenserver.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/13 02:49:32 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_NONE=0.001, URIBL_BLOCKED=0.001 autolearn=ham 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: Laurent Vivier , Filip Bozuta Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Filip Bozuta This patch implements functionality for following ioctls: BTRFS_IOC_QUOTA_CTL - Enabling/Disabling quota support Enable or disable quota support for a btrfs filesystem. Quota support is enabled or disabled using the ioctls third argument which represents a pointer to a following type: struct btrfs_ioctl_quota_ctl_args { __u64 cmd; __u64 status; }; Before calling this ioctl, the 'cmd' field should be filled with one of the values 'BTRFS_QUOTA_CTL_ENABLE' (enabling quota) 'BTRFS_QUOTA_CTL_DISABLE' (disabling quota). BTRFS_IOC_QGROUP_CREATE - Creating/Removing a subvolume quota group Create or remove a subvolume quota group. The subvolume quota group is created or removed using the ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_qgroup_create_args { __u64 create; __u64 qgroupid; }; Before calling this ioctl, the 'create' field should be filled with the aproppriate value depending on if the user wants to create or remove a quota group (0 for removing, everything else for creating). Also, the 'qgroupid' field should be filled with the value for the quota group id that is to be created. BTRFS_IOC_QGROUP_ASSIGN - Asigning or removing a quota group as child group Asign or remove a quota group as child quota group of another group in the btrfs filesystem. The asignment is done using the ioctl's third argument which represents a pointert to a following type: struct btrfs_ioctl_qgroup_assign_args { __u64 assign; __u64 src; __u64 dst; }; Before calling this ioctl, the 'assign' field should be filled with the aproppriate value depending on if the user wants to asign or remove a quota group as a child quota group of another group (0 for removing, everythin else for asigning). Also, the 'src' and 'dst' fields should be filled with the aproppriate quota group id values depending on which quota group needs to asigned or removed as child quota group of another group ('src' gets asigned or removed as child group of 'dst'). BTRFS_IOC_QGROUP_LIMIT - Limiting the size of a quota group Limit the size of a quota group. The size of the quota group is limited with the ioctls third argument which represents a pointer to a following type: struct btrfs_ioctl_qgroup_limit_args { __u64 qgroupid; struct btrfs_qgroup_limit lim; }; Before calling this ioctl, the 'qgroup' id field should be filled with aproppriate value of the quota group id for which the size is to be limited. The second field is of following type: struct btrfs_qgroup_limit { __u64 flags; __u64 max_rfer; __u64 max_excl; __u64 rsv_rfer; __u64 rsv_excl; }; The 'max_rfer' field should be filled with the size to which the quota group should be limited. The 'flags' field can be used for passing additional options and can have values which can be found on: https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/btrfs.h#L67 BTRFS_IOC_QUOTA_RESCAN_STATUS - Checking status of running rescan operation Check status of a running rescan operation. The status is checked using the ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_quota_rescan_args { __u64 flags; __u64 progress; __u64 reserved[6]; }; If there is a rescan operation running, 'flags' field is set to 1, and 'progress' field is set to aproppriate value which represents the progress of the operation. BTRFS_IOC_QUOTA_RESCAN - Starting a rescan operation Start ar rescan operation to Trash all quota groups and scan the metadata again with the current config. Before calling this ioctl, BTRFS_IOC_QUOTA_RESCAN_STATUS sould be run to check if there is already a rescan operation runing. After that ioctl call, the received 'struct btrfs_ioctl_quota_rescan_args' should be than passed as this ioctls third argument. BTRFS_IOC_QUOTA_RESCAN_WAIT - Waiting for a rescan operation to finish Wait until a rescan operation is finished (if there is a rescan operation running). The third ioctls argument is ignored. Implementation notes: Almost all of the ioctls in this patch use structure types as third arguments. That is the reason why aproppriate thunk definitions were added in file 'syscall_types.h'. Signed-off-by: Filip Bozuta Reviewed-by: Laurent Vivier Message-Id: <20200803094629.21898-8-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- linux-user/ioctls.h | 27 +++++++++++++++++++++++++++ linux-user/syscall_defs.h | 7 +++++++ linux-user/syscall_types.h | 29 +++++++++++++++++++++++++++++ 3 files changed, 63 insertions(+) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 728880b9f37b..882bfb3e8854 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -227,6 +227,33 @@ IOCTL(BTRFS_IOC_LOGICAL_INO, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_logical_ino_args))) #endif +#ifdef BTRFS_IOC_QUOTA_CTL + IOCTL(BTRFS_IOC_QUOTA_CTL, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_quota_ctl_args))) +#endif +#ifdef BTRFS_IOC_QGROUP_ASSIGN + IOCTL(BTRFS_IOC_QGROUP_ASSIGN, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_qgroup_assign_args))) +#endif +#ifdef BTRFS_IOC_QGROUP_CREATE + IOCTL(BTRFS_IOC_QGROUP_CREATE, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_qgroup_create_args))) +#endif +#ifdef BTRFS_IOC_QGROUP_LIMIT + IOCTL(BTRFS_IOC_QGROUP_LIMIT, IOC_R, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_qgroup_limit_args))) +#endif +#ifdef BTRFS_IOC_QUOTA_RESCAN + IOCTL(BTRFS_IOC_QUOTA_RESCAN, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_quota_rescan_args))) +#endif +#ifdef BTRFS_IOC_QUOTA_RESCAN_STATUS + IOCTL(BTRFS_IOC_QUOTA_RESCAN_STATUS, IOC_R, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_quota_rescan_args))) +#endif +#ifdef BTRFS_IOC_QUOTA_RESCAN_WAIT + IOCTL(BTRFS_IOC_QUOTA_RESCAN_WAIT, 0, TYPE_NULL) +#endif #ifdef BTRFS_IOC_GET_DEV_STATS IOCTL(BTRFS_IOC_GET_DEV_STATS, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_dev_stats))) diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index b025032626a3..8ae54f6946ed 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -990,6 +990,13 @@ struct target_rtc_pll_info { #define TARGET_BTRFS_IOC_DEV_INFO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 30) #define TARGET_BTRFS_IOC_INO_PATHS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 35) #define TARGET_BTRFS_IOC_LOGICAL_INO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 36) +#define TARGET_BTRFS_IOC_QUOTA_CTL TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 40) +#define TARGET_BTRFS_IOC_QGROUP_ASSIGN TARGET_IOWU(BTRFS_IOCTL_MAGIC, 41) +#define TARGET_BTRFS_IOC_QGROUP_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 42) +#define TARGET_BTRFS_IOC_QGROUP_LIMIT TARGET_IORU(BTRFS_IOCTL_MAGIC, 43) +#define TARGET_BTRFS_IOC_QUOTA_RESCAN TARGET_IOWU(BTRFS_IOCTL_MAGIC, 44) +#define TARGET_BTRFS_IOC_QUOTA_RESCAN_STATUS TARGET_IORU(BTRFS_IOCTL_MAGIC, 45) +#define TARGET_BTRFS_IOC_QUOTA_RESCAN_WAIT TARGET_IO(BTRFS_IOCTL_MAGIC, 46) #define TARGET_BTRFS_IOC_GET_DEV_STATS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 52) #define TARGET_BTRFS_IOC_GET_FEATURES TARGET_IORU(BTRFS_IOCTL_MAGIC, 57) #define TARGET_BTRFS_IOC_SET_FEATURES TARGET_IOWU(BTRFS_IOCTL_MAGIC, 57) diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index 851010c78104..51743bb75237 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -433,6 +433,35 @@ STRUCT(btrfs_ioctl_get_dev_stats, MK_ARRAY(TYPE_ULONGLONG, 128 - 2 - BTRFS_DEV_STAT_VALUES_MAX)) /* unused */ +STRUCT(btrfs_ioctl_quota_ctl_args, + TYPE_ULONGLONG, /* cmd */ + TYPE_ULONGLONG) /* status */ + +STRUCT(btrfs_ioctl_quota_rescan_args, + TYPE_ULONGLONG, /* flags */ + TYPE_ULONGLONG, /* progress */ + MK_ARRAY(TYPE_ULONGLONG, 6)) /* reserved */ + +STRUCT(btrfs_ioctl_qgroup_assign_args, + TYPE_ULONGLONG, /* assign */ + TYPE_ULONGLONG, /* src */ + TYPE_ULONGLONG) /* dst */ + +STRUCT(btrfs_ioctl_qgroup_create_args, + TYPE_ULONGLONG, /* create */ + TYPE_ULONGLONG) /* qgroupid */ + +STRUCT(btrfs_qgroup_limit, + TYPE_ULONGLONG, /* flags */ + TYPE_ULONGLONG, /* max_rfer */ + TYPE_ULONGLONG, /* max_excl */ + TYPE_ULONGLONG, /* rsv_rfer */ + TYPE_ULONGLONG) /* rsv_excl */ + +STRUCT(btrfs_ioctl_qgroup_limit_args, + TYPE_ULONGLONG, /* qgroupid */ + MK_STRUCT(STRUCT_btrfs_qgroup_limit)) /* lim */ + STRUCT(btrfs_ioctl_feature_flags, TYPE_ULONGLONG, /* compat_flags */ TYPE_ULONGLONG, /* compat_ro_flags */