Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-21 19:41:42 +00:00
Code Issues Packages Projects Releases Wiki Activity
master
linux/fs/xfs/libxfs/xfs_ondisk.h
Darrick J. Wong 13877bc79d xfs: port ondisk structure checks from xfs/122 to the kernel 
Check this with every kernel and userspace build, so we can drop the
nonsense in xfs/122.  Roughly drafted with:

sed -e 's/^offsetof/\tXFS_CHECK_OFFSET/g' \
	-e 's/^sizeof/\tXFS_CHECK_STRUCT_SIZE/g' \
	-e 's/ = \([0-9]*\)/,\t\t\t\1);/g' \
	-e 's/xfs_sb_t/struct xfs_dsb/g' \
	-e 's/),/,/g' \
	-e 's/xfs_\([a-z0-9_]*\)_t,/struct xfs_\1,/g' \
	< tests/xfs/122.out | sort

and then manual fixups.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
2024-11-05 13:38:47 -08:00

297 lines
13 KiB
C
Raw Permalink Blame History

// 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)
#define XFS_CHECK_SB_OFFSET(field, offset) \
XFS_CHECK_OFFSET(struct xfs_dsb, field, offset); \
XFS_CHECK_OFFSET(struct xfs_sb, field, offset);
static inline void __init
xfs_check_ondisk_structs(void)
{
/* 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_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_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_dsymlink_hdr, 56);
XFS_CHECK_STRUCT_SIZE(xfs_timestamp_t, 8);
XFS_CHECK_STRUCT_SIZE(struct xfs_legacy_timestamp, 8);
/* space btrees */
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_alloc_rec, 8);
XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block, 72);
XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block_lhdr, 64);
XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block_shdr, 48);
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_alloc_key_t, 8);
XFS_CHECK_STRUCT_SIZE(xfs_alloc_ptr_t, 4);
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);
XFS_CHECK_STRUCT_SIZE(xfs_bmdr_key_t, 8);
/* 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(struct xfs_attr_leaf_entry, 8);
XFS_CHECK_STRUCT_SIZE(struct xfs_attr_leaf_hdr, 32);
XFS_CHECK_STRUCT_SIZE(struct xfs_attr_leaf_map, 4);
XFS_CHECK_STRUCT_SIZE(struct xfs_attr_leaf_name_local, 4);
/* realtime structures */
XFS_CHECK_STRUCT_SIZE(struct xfs_rtsb, 56);
XFS_CHECK_STRUCT_SIZE(union xfs_rtword_raw, 4);
XFS_CHECK_STRUCT_SIZE(union xfs_suminfo_raw, 4);
XFS_CHECK_STRUCT_SIZE(struct xfs_rtbuf_blkinfo, 48);
/*
* m68k has problems with struct xfs_attr_leaf_name_remote, 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(struct xfs_attr_leaf_name_remote, 12);
*/
XFS_CHECK_OFFSET(struct xfs_attr_leaf_name_local, valuelen, 0);
XFS_CHECK_OFFSET(struct xfs_attr_leaf_name_local, namelen, 2);
XFS_CHECK_OFFSET(struct xfs_attr_leaf_name_local, nameval, 3);
XFS_CHECK_OFFSET(struct xfs_attr_leaf_name_remote, valueblk, 0);
XFS_CHECK_OFFSET(struct xfs_attr_leaf_name_remote, valuelen, 4);
XFS_CHECK_OFFSET(struct xfs_attr_leaf_name_remote, namelen, 8);
XFS_CHECK_OFFSET(struct xfs_attr_leaf_name_remote, name, 9);
XFS_CHECK_STRUCT_SIZE(struct xfs_attr_leafblock, 32);
XFS_CHECK_STRUCT_SIZE(struct xfs_attr_sf_hdr, 4);
XFS_CHECK_OFFSET(struct xfs_attr_sf_hdr, totsize, 0);
XFS_CHECK_OFFSET(struct xfs_attr_sf_hdr, count, 2);
XFS_CHECK_OFFSET(struct xfs_attr_sf_entry, namelen, 0);
XFS_CHECK_OFFSET(struct xfs_attr_sf_entry, valuelen, 1);
XFS_CHECK_OFFSET(struct xfs_attr_sf_entry, flags, 2);
XFS_CHECK_OFFSET(struct xfs_attr_sf_entry, nameval, 3);
XFS_CHECK_STRUCT_SIZE(struct xfs_da_blkinfo, 12);
XFS_CHECK_STRUCT_SIZE(struct xfs_da_intnode, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_da_node_entry, 8);
XFS_CHECK_STRUCT_SIZE(struct xfs_da_node_hdr, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_data_free, 4);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_data_hdr, 16);
XFS_CHECK_OFFSET(struct xfs_dir2_data_unused, freetag, 0);
XFS_CHECK_OFFSET(struct xfs_dir2_data_unused, length, 2);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_free_hdr, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_free, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_leaf_entry, 8);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_leaf_hdr, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_leaf, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_leaf_tail, 4);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_sf_entry, 3);
XFS_CHECK_OFFSET(struct xfs_dir2_sf_entry, namelen, 0);
XFS_CHECK_OFFSET(struct xfs_dir2_sf_entry, offset, 1);
XFS_CHECK_OFFSET(struct xfs_dir2_sf_entry, name, 3);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_sf_hdr, 10);
XFS_CHECK_STRUCT_SIZE(struct xfs_parent_rec, 12);
/* ondisk dir/attr structures from xfs/122 */
XFS_CHECK_STRUCT_SIZE(struct xfs_attr_sf_entry, 3);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_data_free, 4);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_data_hdr, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_data_unused, 6);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_free, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_free_hdr, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_leaf, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_leaf_entry, 8);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_leaf_hdr, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_leaf_tail, 4);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_sf_entry, 3);
XFS_CHECK_STRUCT_SIZE(struct xfs_dir2_sf_hdr, 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);
/* ondisk log structures from xfs/122 */
XFS_CHECK_STRUCT_SIZE(struct xfs_unmount_log_format, 8);
XFS_CHECK_STRUCT_SIZE(struct xfs_xmd_log_format, 16);
XFS_CHECK_STRUCT_SIZE(struct xfs_xmi_log_format, 88);
/* parent pointer ioctls */
XFS_CHECK_STRUCT_SIZE(struct xfs_getparents_rec, 32);
XFS_CHECK_STRUCT_SIZE(struct xfs_getparents, 40);
XFS_CHECK_STRUCT_SIZE(struct xfs_getparents_by_handle, 64);
/*
* 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);
/* superblock field checks we got from xfs/122 */
XFS_CHECK_STRUCT_SIZE(struct xfs_dsb, 288);
XFS_CHECK_STRUCT_SIZE(struct xfs_sb, 288);
XFS_CHECK_SB_OFFSET(sb_magicnum, 0);
XFS_CHECK_SB_OFFSET(sb_blocksize, 4);
XFS_CHECK_SB_OFFSET(sb_dblocks, 8);
XFS_CHECK_SB_OFFSET(sb_rblocks, 16);
XFS_CHECK_SB_OFFSET(sb_rextents, 24);
XFS_CHECK_SB_OFFSET(sb_uuid, 32);
XFS_CHECK_SB_OFFSET(sb_logstart, 48);
XFS_CHECK_SB_OFFSET(sb_rootino, 56);
XFS_CHECK_SB_OFFSET(sb_rbmino, 64);
XFS_CHECK_SB_OFFSET(sb_rsumino, 72);
XFS_CHECK_SB_OFFSET(sb_rextsize, 80);
XFS_CHECK_SB_OFFSET(sb_agblocks, 84);
XFS_CHECK_SB_OFFSET(sb_agcount, 88);
XFS_CHECK_SB_OFFSET(sb_rbmblocks, 92);
XFS_CHECK_SB_OFFSET(sb_logblocks, 96);
XFS_CHECK_SB_OFFSET(sb_versionnum, 100);
XFS_CHECK_SB_OFFSET(sb_sectsize, 102);
XFS_CHECK_SB_OFFSET(sb_inodesize, 104);
XFS_CHECK_SB_OFFSET(sb_inopblock, 106);
XFS_CHECK_SB_OFFSET(sb_blocklog, 120);
XFS_CHECK_SB_OFFSET(sb_fname[12], 120);
XFS_CHECK_SB_OFFSET(sb_sectlog, 121);
XFS_CHECK_SB_OFFSET(sb_inodelog, 122);
XFS_CHECK_SB_OFFSET(sb_inopblog, 123);
XFS_CHECK_SB_OFFSET(sb_agblklog, 124);
XFS_CHECK_SB_OFFSET(sb_rextslog, 125);
XFS_CHECK_SB_OFFSET(sb_inprogress, 126);
XFS_CHECK_SB_OFFSET(sb_imax_pct, 127);
XFS_CHECK_SB_OFFSET(sb_icount, 128);
XFS_CHECK_SB_OFFSET(sb_ifree, 136);
XFS_CHECK_SB_OFFSET(sb_fdblocks, 144);
XFS_CHECK_SB_OFFSET(sb_frextents, 152);
XFS_CHECK_SB_OFFSET(sb_uquotino, 160);
XFS_CHECK_SB_OFFSET(sb_gquotino, 168);
XFS_CHECK_SB_OFFSET(sb_qflags, 176);
XFS_CHECK_SB_OFFSET(sb_flags, 178);
XFS_CHECK_SB_OFFSET(sb_shared_vn, 179);
XFS_CHECK_SB_OFFSET(sb_inoalignmt, 180);
XFS_CHECK_SB_OFFSET(sb_unit, 184);
XFS_CHECK_SB_OFFSET(sb_width, 188);
XFS_CHECK_SB_OFFSET(sb_dirblklog, 192);
XFS_CHECK_SB_OFFSET(sb_logsectlog, 193);
XFS_CHECK_SB_OFFSET(sb_logsectsize, 194);
XFS_CHECK_SB_OFFSET(sb_logsunit, 196);
XFS_CHECK_SB_OFFSET(sb_features2, 200);
XFS_CHECK_SB_OFFSET(sb_bad_features2, 204);
XFS_CHECK_SB_OFFSET(sb_features_compat, 208);
XFS_CHECK_SB_OFFSET(sb_features_ro_compat, 212);
XFS_CHECK_SB_OFFSET(sb_features_incompat, 216);
XFS_CHECK_SB_OFFSET(sb_features_log_incompat, 220);
XFS_CHECK_SB_OFFSET(sb_crc, 224);
XFS_CHECK_SB_OFFSET(sb_spino_align, 228);
XFS_CHECK_SB_OFFSET(sb_pquotino, 232);
XFS_CHECK_SB_OFFSET(sb_lsn, 240);
XFS_CHECK_SB_OFFSET(sb_meta_uuid, 248);
XFS_CHECK_SB_OFFSET(sb_metadirino, 264);
XFS_CHECK_SB_OFFSET(sb_rgcount, 272);
XFS_CHECK_SB_OFFSET(sb_rgextents, 276);
XFS_CHECK_SB_OFFSET(sb_rgblklog, 280);
XFS_CHECK_SB_OFFSET(sb_pad, 281);
}
#endif /* __XFS_ONDISK_H */
Reference in New Issue View Git Blame Copy Permalink