From patchwork Tue Apr 4 14:52:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Albershteyn X-Patchwork-Id: 13200344 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3BC632FAE for ; Tue, 4 Apr 2023 14:54:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1680620082; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=oD3C5F3LGtukmBxzahEExE7hRIVYDTE1CCzX3qZAvIY=; b=jEl8gdgxbntUy+UZO+dtMGSkwNQQDW81AcIjmamB4S6uVNVBy5s4LCHIehFr5PMlUBELvN TvtELr/mn7e7tpvLKebpe+yarwNrzcj2zhsLEegMT86MypqPLA58M9VnYDbKOGr0RO2CWc U0XVEVqG/F2qis9J1wDA01RuoDRjkO0= Received: from mail-qt1-f200.google.com (mail-qt1-f200.google.com [209.85.160.200]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-31-CJNauQOUN9eA31WURH7HFg-1; Tue, 04 Apr 2023 10:54:41 -0400 X-MC-Unique: CJNauQOUN9eA31WURH7HFg-1 Received: by mail-qt1-f200.google.com with SMTP id a11-20020ac85b8b000000b003e3979be6abso22121743qta.12 for ; Tue, 04 Apr 2023 07:54:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680620080; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=oD3C5F3LGtukmBxzahEExE7hRIVYDTE1CCzX3qZAvIY=; b=A8LDbo5IZssbS1mRlzuYzEgiQj3RxVwXb23kza0HlCtcpebFvqgcFquAS7PmYRQH7a PVB8agC9KfrITqzPcGvI9BfD/GhisuiBySZcJ7eApEEXfsSr1TYEo8CfBSvDvok7WVOG slLpatIyauPtwpz1yBm060VQd4ivkrIY7tBfD6SwGalXWYIXHPmH2StEtYVUTjBb0gZ9 ULYfcGVEPLgDc75E2pBTm5dT6BvVbjLQo5DeKVJzv3kkF6We3hnnbn4y7WADrx1g4Iyj hct4ia81/dxRz/tdwH0kFwpyKyVkLnJgAoSg8YZcnnJtCcns8P6a/CRGJZ76p6JWYqz2 gyWw== X-Gm-Message-State: AAQBX9cS6vuK7MCYujvhDgQFkq9kFY3cy/4FPkPqfpmCLMnNirsVuhna N0/b6i/FkX9EwjHVunfQhXabjAFZqrHAr362eeLaA9sX4fYIqqDk4PWJdEDMOmlTRyVe/LExW7Y mX2a3BfUmXNF4IE0/Aw== X-Received: by 2002:a05:622a:183:b0:3e4:9f9a:54b2 with SMTP id s3-20020a05622a018300b003e49f9a54b2mr3125034qtw.65.1680620080398; Tue, 04 Apr 2023 07:54:40 -0700 (PDT) X-Google-Smtp-Source: AKy350aQaTUsx1W6QCtRYW4E/BPPbSUPOo7MRSxPdoArP74ywpcoKBragJvpDtJCE5UocjgeAZeoJA== X-Received: by 2002:a05:622a:183:b0:3e4:9f9a:54b2 with SMTP id s3-20020a05622a018300b003e49f9a54b2mr3124990qtw.65.1680620080023; Tue, 04 Apr 2023 07:54:40 -0700 (PDT) Received: from aalbersh.remote.csb ([109.183.6.197]) by smtp.gmail.com with ESMTPSA id j4-20020ac86644000000b003e6387431dcsm3296539qtp.7.2023.04.04.07.54.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Apr 2023 07:54:39 -0700 (PDT) From: Andrey Albershteyn To: djwong@kernel.org, dchinner@redhat.com, ebiggers@kernel.org, hch@infradead.org, linux-xfs@vger.kernel.org, fsverity@lists.linux.dev Cc: rpeterso@redhat.com, agruenba@redhat.com, xiang@kernel.org, chao@kernel.org, damien.lemoal@opensource.wdc.com, jth@kernel.org, linux-erofs@lists.ozlabs.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, Andrey Albershteyn Subject: [PATCH v2 00/23] fs-verity support for XFS Date: Tue, 4 Apr 2023 16:52:56 +0200 Message-Id: <20230404145319.2057051-1-aalbersh@redhat.com> X-Mailer: git-send-email 2.31.1 Precedence: bulk X-Mailing-List: fsverity@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Hi all, This is V2 of fs-verity support in XFS. In this series I did numerous changes from V1 which are described below. This patchset introduces fs-verity [5] support for XFS. This implementation utilizes extended attributes to store fs-verity metadata. The Merkle tree blocks are stored in the remote extended attributes. A few key points: - fs-verity metadata is stored in extended attributes - Direct path and DAX are disabled for inodes with fs-verity - Pages are verified in iomap's read IO path (offloaded to workqueue) - New workqueue for verification processing - New ro-compat flag - Inodes with fs-verity have new on-disk diflag - xfs_attr_get() can return buffer with the attribute The patchset is tested with xfstests -g auto on xfs_1k, xfs_4k, xfs_1k_quota, and xfs_4k_quota. Haven't found any major failures. Patches [6/23] and [7/23] touch ext4, f2fs, btrfs, and patch [8/23] touches erofs, gfs2, and zonefs. The patchset consist of four parts: - [1..4]: Patches from Parent Pointer patchset which add binary xattr names with a few deps - [5..7]: Improvements to core fs-verity - [8..9]: Add read path verification to iomap - [10..23]: Integration of fs-verity to xfs Changes from V1: - Added parent pointer patches for easier testing - Many issues and refactoring points fixed from the V1 review - Adjusted for recent changes in fs-verity core (folios, non-4k) - Dropped disabling of large folios - Completely new fsverity patches (fix, callout, log_blocksize) - Change approach to verification in iomap to the same one as in write path. Callouts to fs instead of direct fs-verity use. - New XFS workqueue for post read folio verification - xfs_attr_get() can return underlying xfs_buf - xfs_bufs are marked with XBF_VERITY_CHECKED to track verified blocks kernel: [1]: https://github.com/alberand/linux/tree/xfs-verity-v2 xfsprogs: [2]: https://github.com/alberand/xfsprogs/tree/fsverity-v2 xfstests: [3]: https://github.com/alberand/xfstests/tree/fsverity-v2 v1: [4]: https://lore.kernel.org/linux-xfs/20221213172935.680971-1-aalbersh@redhat.com/ fs-verity: [5]: https://www.kernel.org/doc/html/latest/filesystems/fsverity.html Thanks, Andrey Allison Henderson (4): xfs: Add new name to attri/d xfs: add parent pointer support to attribute code xfs: define parent pointer xattr format xfs: Add xfs_verify_pptr Andrey Albershteyn (19): fsverity: make fsverity_verify_folio() accept folio's offset and size fsverity: add drop_page() callout fsverity: pass Merkle tree block size to ->read_merkle_tree_page() iomap: hoist iomap_readpage_ctx from the iomap_readahead/_folio iomap: allow filesystem to implement read path verification xfs: add XBF_VERITY_CHECKED xfs_buf flag xfs: add XFS_DA_OP_BUFFER to make xfs_attr_get() return buffer xfs: introduce workqueue for post read IO work xfs: add iomap's readpage operations xfs: add attribute type for fs-verity xfs: add fs-verity ro-compat flag xfs: add inode on-disk VERITY flag xfs: initialize fs-verity on file open and cleanup on inode destruction xfs: don't allow to enable DAX on fs-verity sealsed inode xfs: disable direct read path for fs-verity sealed files xfs: add fs-verity support xfs: handle merkle tree block size != fs blocksize != PAGE_SIZE xfs: add fs-verity ioctls xfs: enable ro-compat fs-verity flag fs/btrfs/verity.c | 15 +- fs/erofs/data.c | 12 +- fs/ext4/verity.c | 9 +- fs/f2fs/verity.c | 9 +- fs/gfs2/aops.c | 10 +- fs/ioctl.c | 4 + fs/iomap/buffered-io.c | 89 ++++++----- fs/verity/read_metadata.c | 7 +- fs/verity/verify.c | 9 +- fs/xfs/Makefile | 1 + fs/xfs/libxfs/xfs_attr.c | 81 +++++++++- fs/xfs/libxfs/xfs_attr.h | 7 +- fs/xfs/libxfs/xfs_attr_leaf.c | 7 + fs/xfs/libxfs/xfs_attr_remote.c | 13 +- fs/xfs/libxfs/xfs_da_btree.h | 7 +- fs/xfs/libxfs/xfs_da_format.h | 46 +++++- fs/xfs/libxfs/xfs_format.h | 14 +- fs/xfs/libxfs/xfs_log_format.h | 8 +- fs/xfs/libxfs/xfs_sb.c | 2 + fs/xfs/scrub/attr.c | 4 +- fs/xfs/xfs_aops.c | 61 +++++++- fs/xfs/xfs_attr_item.c | 142 +++++++++++++++--- fs/xfs/xfs_attr_item.h | 1 + fs/xfs/xfs_attr_list.c | 17 ++- fs/xfs/xfs_buf.h | 17 ++- fs/xfs/xfs_file.c | 22 ++- fs/xfs/xfs_inode.c | 2 + fs/xfs/xfs_inode.h | 3 +- fs/xfs/xfs_ioctl.c | 22 +++ fs/xfs/xfs_iomap.c | 14 ++ fs/xfs/xfs_iops.c | 4 + fs/xfs/xfs_linux.h | 1 + fs/xfs/xfs_mount.h | 3 + fs/xfs/xfs_ondisk.h | 4 + fs/xfs/xfs_super.c | 19 +++ fs/xfs/xfs_trace.h | 1 + fs/xfs/xfs_verity.c | 256 ++++++++++++++++++++++++++++++++ fs/xfs/xfs_verity.h | 27 ++++ fs/xfs/xfs_xattr.c | 9 ++ fs/zonefs/file.c | 12 +- include/linux/fsverity.h | 18 ++- include/linux/iomap.h | 39 ++++- include/uapi/linux/fs.h | 1 + 43 files changed, 923 insertions(+), 126 deletions(-) create mode 100644 fs/xfs/xfs_verity.c create mode 100644 fs/xfs/xfs_verity.h