From patchwork Wed Mar 13 01:59:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13590864 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A2AB2DF5A for ; Wed, 13 Mar 2024 01:59:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710295158; cv=none; b=Dfr9ZmV9+u43MFnPi9cWEuZxA+S8UZbqY1YsUswX+oGv3fd1a8ji2Pf1uRGJYpIX93GMYSAjYtfLUBUNNqRl3Du+2P6gAgMMKS63z0MEj7Wy9M878hwVRDsTdR6bWhPTaY4BDdEyNxA1Z3cQcjOQIaVRtHnBrWMenDBQFFK3cOU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710295158; c=relaxed/simple; bh=tWTxWz0/rkh0mQ2QzSnPu9RNdPOy111TvX5FWb7vE9c=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=npM138tcEeBpXuhx7Mq0EoLgTmmBP35DNZeHduX6nhWXl4IhQ2U/JK30RBcgKhFiEoMvjDVIF0smSMDb03U6Lw8WCV4M6iL98fD16jc1eJtPsltbVyn94Lhd0Cb14YPQkpmqtBDX63Dm/KxAPOlqeucgeY+2C25aYG1OHMyCPdo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZFT6B2zM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZFT6B2zM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 338C6C433C7; Wed, 13 Mar 2024 01:59:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710295158; bh=tWTxWz0/rkh0mQ2QzSnPu9RNdPOy111TvX5FWb7vE9c=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=ZFT6B2zMK1KNawLsak0v/QVbTXKdlP6Jiuulmp9kZnBB3Fe7jYy53VOcABQSrh9Rq 2EASlYo6Nm/3JjQg/mnRrToEaOV4SooIJ7jy/8VZsIMK9XZEWRmfja6VvAw9QCj4v+ OdBIHcq891C9BO630ZqydFezvHNHEko48KmLzKMtUJ5ZO7X/RhdVSVpqRJs8MyEPrK Dj7mfo3VZzX7tAUCsHll777I5ujkmR4EjunpFMQrVmQZGaaVSby2mkiJVAoaaXcHfz iZRhW9d6x3pFRIjs+agqfpg6pPUST8qwonozE7HAP+0lwsJ/yepE3pa92IZLoSZ2qu 56yInH500dTvA== Date: Tue, 12 Mar 2024 18:59:17 -0700 Subject: [PATCH 24/67] xfs: move xfs_ondisk.h to libxfs/ From: "Darrick J. Wong" To: djwong@kernel.org, cem@kernel.org Cc: Christoph Hellwig , Carlos Maiolino , Chandan Babu R , linux-xfs@vger.kernel.org Message-ID: <171029431540.2061787.8746966031228583492.stgit@frogsfrogsfrogs> In-Reply-To: <171029431107.2061787.680090905906055791.stgit@frogsfrogsfrogs> References: <171029431107.2061787.680090905906055791.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Christoph Hellwig Move xfs_ondisk.h to libxfs so that we can do the struct sanity checks in userspace libxfs as well. This should allow us to retire the somewhat fragile xfs/122 test on xfstests. Signed-off-by: Christoph Hellwig Reviewed-by: "Darrick J. Wong" Reviewed-by: Carlos Maiolino Signed-off-by: Chandan Babu R --- libxfs/init.c | 6 ++ libxfs/xfs_ondisk.h | 199 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 205 insertions(+) create mode 100644 libxfs/xfs_ondisk.h diff --git a/libxfs/init.c b/libxfs/init.c index c903d60707b7..1e035c48f57f 100644 --- a/libxfs/init.c +++ b/libxfs/init.c @@ -23,6 +23,11 @@ #include "xfs_refcount_btree.h" #include "libfrog/platform.h" +#include "xfs_format.h" +#include "xfs_da_format.h" +#include "xfs_log_format.h" +#include "xfs_ondisk.h" + #include "libxfs.h" /* for now */ #ifndef HAVE_LIBURCU_ATOMIC64 @@ -248,6 +253,7 @@ libxfs_close_devices( int libxfs_init(struct libxfs_init *a) { + xfs_check_ondisk_structs(); rcu_init(); rcu_register_thread(); radix_tree_init(); diff --git a/libxfs/xfs_ondisk.h b/libxfs/xfs_ondisk.h new file mode 100644 index 000000000000..d9c988c5ad69 --- /dev/null +++ b/libxfs/xfs_ondisk.h @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2016 Oracle. + * All Rights Reserved. + */ +#ifndef __XFS_ONDISK_H +#define __XFS_ONDISK_H + +#define XFS_CHECK_STRUCT_SIZE(structname, size) \ + static_assert(sizeof(structname) == (size), \ + "XFS: sizeof(" #structname ") is wrong, expected " #size) + +#define XFS_CHECK_OFFSET(structname, member, off) \ + static_assert(offsetof(structname, member) == (off), \ + "XFS: offsetof(" #structname ", " #member ") is wrong, " \ + "expected " #off) + +#define XFS_CHECK_VALUE(value, expected) \ + static_assert((value) == (expected), \ + "XFS: value of " #value " is wrong, expected " #expected) + +static inline void __init +xfs_check_ondisk_structs(void) +{ + /* ag/file structures */ + XFS_CHECK_STRUCT_SIZE(struct xfs_acl, 4); + XFS_CHECK_STRUCT_SIZE(struct xfs_acl_entry, 12); + XFS_CHECK_STRUCT_SIZE(struct xfs_agf, 224); + XFS_CHECK_STRUCT_SIZE(struct xfs_agfl, 36); + XFS_CHECK_STRUCT_SIZE(struct xfs_agi, 344); + XFS_CHECK_STRUCT_SIZE(struct xfs_bmbt_key, 8); + XFS_CHECK_STRUCT_SIZE(struct xfs_bmbt_rec, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_bmdr_block, 4); + XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block_shdr, 48); + XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block_lhdr, 64); + XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block, 72); + XFS_CHECK_STRUCT_SIZE(struct xfs_dinode, 176); + XFS_CHECK_STRUCT_SIZE(struct xfs_disk_dquot, 104); + XFS_CHECK_STRUCT_SIZE(struct xfs_dqblk, 136); + XFS_CHECK_STRUCT_SIZE(struct xfs_dsb, 264); + XFS_CHECK_STRUCT_SIZE(struct xfs_dsymlink_hdr, 56); + XFS_CHECK_STRUCT_SIZE(struct xfs_inobt_key, 4); + XFS_CHECK_STRUCT_SIZE(struct xfs_inobt_rec, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_refcount_key, 4); + XFS_CHECK_STRUCT_SIZE(struct xfs_refcount_rec, 12); + XFS_CHECK_STRUCT_SIZE(struct xfs_rmap_key, 20); + XFS_CHECK_STRUCT_SIZE(struct xfs_rmap_rec, 24); + XFS_CHECK_STRUCT_SIZE(xfs_timestamp_t, 8); + XFS_CHECK_STRUCT_SIZE(struct xfs_legacy_timestamp, 8); + XFS_CHECK_STRUCT_SIZE(xfs_alloc_key_t, 8); + XFS_CHECK_STRUCT_SIZE(xfs_alloc_ptr_t, 4); + XFS_CHECK_STRUCT_SIZE(xfs_alloc_rec_t, 8); + XFS_CHECK_STRUCT_SIZE(xfs_inobt_ptr_t, 4); + XFS_CHECK_STRUCT_SIZE(xfs_refcount_ptr_t, 4); + XFS_CHECK_STRUCT_SIZE(xfs_rmap_ptr_t, 4); + + /* dir/attr trees */ + XFS_CHECK_STRUCT_SIZE(struct xfs_attr3_leaf_hdr, 80); + XFS_CHECK_STRUCT_SIZE(struct xfs_attr3_leafblock, 80); + XFS_CHECK_STRUCT_SIZE(struct xfs_attr3_rmt_hdr, 56); + XFS_CHECK_STRUCT_SIZE(struct xfs_da3_blkinfo, 56); + XFS_CHECK_STRUCT_SIZE(struct xfs_da3_intnode, 64); + XFS_CHECK_STRUCT_SIZE(struct xfs_da3_node_hdr, 64); + XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_blk_hdr, 48); + XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_data_hdr, 64); + XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_free, 64); + XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_free_hdr, 64); + XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_leaf, 64); + XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_leaf_hdr, 64); + XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_entry_t, 8); + XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_hdr_t, 32); + XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_map_t, 4); + XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_name_local_t, 4); + + /* realtime structures */ + XFS_CHECK_STRUCT_SIZE(union xfs_rtword_raw, 4); + XFS_CHECK_STRUCT_SIZE(union xfs_suminfo_raw, 4); + + /* + * m68k has problems with xfs_attr_leaf_name_remote_t, but we pad it to + * 4 bytes anyway so it's not obviously a problem. Hence for the moment + * we don't check this structure. This can be re-instated when the attr + * definitions are updated to use c99 VLA definitions. + * + XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_name_remote_t, 12); + */ + + XFS_CHECK_OFFSET(xfs_attr_leaf_name_local_t, valuelen, 0); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_local_t, namelen, 2); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_local_t, nameval, 3); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, valueblk, 0); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, valuelen, 4); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, namelen, 8); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, name, 9); + XFS_CHECK_STRUCT_SIZE(xfs_attr_leafblock_t, 32); + XFS_CHECK_STRUCT_SIZE(struct xfs_attr_shortform, 4); + XFS_CHECK_OFFSET(struct xfs_attr_shortform, hdr.totsize, 0); + XFS_CHECK_OFFSET(struct xfs_attr_shortform, hdr.count, 2); + XFS_CHECK_OFFSET(struct xfs_attr_shortform, list[0].namelen, 4); + XFS_CHECK_OFFSET(struct xfs_attr_shortform, list[0].valuelen, 5); + XFS_CHECK_OFFSET(struct xfs_attr_shortform, list[0].flags, 6); + XFS_CHECK_OFFSET(struct xfs_attr_shortform, list[0].nameval, 7); + XFS_CHECK_STRUCT_SIZE(xfs_da_blkinfo_t, 12); + XFS_CHECK_STRUCT_SIZE(xfs_da_intnode_t, 16); + XFS_CHECK_STRUCT_SIZE(xfs_da_node_entry_t, 8); + XFS_CHECK_STRUCT_SIZE(xfs_da_node_hdr_t, 16); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_data_free_t, 4); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_data_hdr_t, 16); + XFS_CHECK_OFFSET(xfs_dir2_data_unused_t, freetag, 0); + XFS_CHECK_OFFSET(xfs_dir2_data_unused_t, length, 2); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_free_hdr_t, 16); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_free_t, 16); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_entry_t, 8); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_hdr_t, 16); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_t, 16); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_tail_t, 4); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_entry_t, 3); + XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, namelen, 0); + XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, offset, 1); + XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, name, 3); + XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_hdr_t, 10); + + /* log structures */ + XFS_CHECK_STRUCT_SIZE(struct xfs_buf_log_format, 88); + XFS_CHECK_STRUCT_SIZE(struct xfs_dq_logformat, 24); + XFS_CHECK_STRUCT_SIZE(struct xfs_efd_log_format_32, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_efd_log_format_64, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_efi_log_format_32, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_efi_log_format_64, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_extent_32, 12); + XFS_CHECK_STRUCT_SIZE(struct xfs_extent_64, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_log_dinode, 176); + XFS_CHECK_STRUCT_SIZE(struct xfs_icreate_log, 28); + XFS_CHECK_STRUCT_SIZE(xfs_log_timestamp_t, 8); + XFS_CHECK_STRUCT_SIZE(struct xfs_log_legacy_timestamp, 8); + XFS_CHECK_STRUCT_SIZE(struct xfs_inode_log_format_32, 52); + XFS_CHECK_STRUCT_SIZE(struct xfs_inode_log_format, 56); + XFS_CHECK_STRUCT_SIZE(struct xfs_qoff_logformat, 20); + XFS_CHECK_STRUCT_SIZE(struct xfs_trans_header, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_attri_log_format, 40); + XFS_CHECK_STRUCT_SIZE(struct xfs_attrd_log_format, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_bui_log_format, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_bud_log_format, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_cui_log_format, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_cud_log_format, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_rui_log_format, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_rud_log_format, 16); + XFS_CHECK_STRUCT_SIZE(struct xfs_map_extent, 32); + XFS_CHECK_STRUCT_SIZE(struct xfs_phys_extent, 16); + + XFS_CHECK_OFFSET(struct xfs_bui_log_format, bui_extents, 16); + XFS_CHECK_OFFSET(struct xfs_cui_log_format, cui_extents, 16); + XFS_CHECK_OFFSET(struct xfs_rui_log_format, rui_extents, 16); + XFS_CHECK_OFFSET(struct xfs_efi_log_format, efi_extents, 16); + XFS_CHECK_OFFSET(struct xfs_efi_log_format_32, efi_extents, 16); + XFS_CHECK_OFFSET(struct xfs_efi_log_format_64, efi_extents, 16); + + /* + * The v5 superblock format extended several v4 header structures with + * additional data. While new fields are only accessible on v5 + * superblocks, it's important that the v5 structures place original v4 + * fields/headers in the correct location on-disk. For example, we must + * be able to find magic values at the same location in certain blocks + * regardless of superblock version. + * + * The following checks ensure that various v5 data structures place the + * subset of v4 metadata associated with the same type of block at the + * start of the on-disk block. If there is no data structure definition + * for certain types of v4 blocks, traverse down to the first field of + * common metadata (e.g., magic value) and make sure it is at offset + * zero. + */ + XFS_CHECK_OFFSET(struct xfs_dir3_leaf, hdr.info.hdr, 0); + XFS_CHECK_OFFSET(struct xfs_da3_intnode, hdr.info.hdr, 0); + XFS_CHECK_OFFSET(struct xfs_dir3_data_hdr, hdr.magic, 0); + XFS_CHECK_OFFSET(struct xfs_dir3_free, hdr.hdr.magic, 0); + XFS_CHECK_OFFSET(struct xfs_attr3_leafblock, hdr.info.hdr, 0); + + XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat, 192); + XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers, 24); + XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat_req, 64); + XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers_req, 64); + + /* + * Make sure the incore inode timestamp range corresponds to hand + * converted values based on the ondisk format specification. + */ + XFS_CHECK_VALUE(XFS_BIGTIME_TIME_MIN - XFS_BIGTIME_EPOCH_OFFSET, + XFS_LEGACY_TIME_MIN); + XFS_CHECK_VALUE(XFS_BIGTIME_TIME_MAX - XFS_BIGTIME_EPOCH_OFFSET, + 16299260424LL); + + /* Do the same with the incore quota expiration range. */ + XFS_CHECK_VALUE(XFS_DQ_BIGTIME_EXPIRY_MIN << XFS_DQ_BIGTIME_SHIFT, 4); + XFS_CHECK_VALUE(XFS_DQ_BIGTIME_EXPIRY_MAX << XFS_DQ_BIGTIME_SHIFT, + 16299260424LL); +} + +#endif /* __XFS_ONDISK_H */