projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 30cbc591 DW |
2 | /* |
| 3 | * Copyright (c) 2016 Oracle. | |
| 4 | * All Rights Reserved. | |
| 30cbc591 DW |
5 | */ |
| 6 | #ifndef __XFS_ONDISK_H | |
| 7 | #define __XFS_ONDISK_H | |
| 8 | ||
| 9 | #define XFS_CHECK_STRUCT_SIZE(structname, size) \ | |
| 10 | BUILD_BUG_ON_MSG(sizeof(structname) != (size), "XFS: sizeof(" \ | |
| 11 | #structname ") is wrong, expected " #size) | |
| 12 | ||
| 3f94c441 DW |
13 | #define XFS_CHECK_OFFSET(structname, member, off) \ |
| 14 | BUILD_BUG_ON_MSG(offsetof(structname, member) != (off), \ | |
| 15 | "XFS: offsetof(" #structname ", " #member ") is wrong, " \ | |
| 16 | "expected " #off) | |
| 17 | ||
| f93e5436 DW |
18 | #define XFS_CHECK_VALUE(value, expected) \ |
| 19 | BUILD_BUG_ON_MSG((value) != (expected), \ | |
| 20 | "XFS: value of " #value " is wrong, expected " #expected) | |
| 21 | ||
| 30cbc591 DW |
22 | static inline void __init |
| 23 | xfs_check_ondisk_structs(void) | |
| 24 | { | |
| 25 | /* ag/file structures */ | |
| 26 | XFS_CHECK_STRUCT_SIZE(struct xfs_acl, 4); | |
| 27 | XFS_CHECK_STRUCT_SIZE(struct xfs_acl_entry, 12); | |
| 28 | XFS_CHECK_STRUCT_SIZE(struct xfs_agf, 224); | |
| 29 | XFS_CHECK_STRUCT_SIZE(struct xfs_agfl, 36); | |
| 2a39946c | 30 | XFS_CHECK_STRUCT_SIZE(struct xfs_agi, 344); |
| 30cbc591 DW |
31 | XFS_CHECK_STRUCT_SIZE(struct xfs_bmbt_key, 8); |
| 32 | XFS_CHECK_STRUCT_SIZE(struct xfs_bmbt_rec, 16); | |
| 33 | XFS_CHECK_STRUCT_SIZE(struct xfs_bmdr_block, 4); | |
| ad70328a HT |
34 | XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block_shdr, 48); |
| 35 | XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block_lhdr, 64); | |
| 30cbc591 DW |
36 | XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block, 72); |
| 37 | XFS_CHECK_STRUCT_SIZE(struct xfs_dinode, 176); | |
| 38 | XFS_CHECK_STRUCT_SIZE(struct xfs_disk_dquot, 104); | |
| 39 | XFS_CHECK_STRUCT_SIZE(struct xfs_dqblk, 136); | |
| 40 | XFS_CHECK_STRUCT_SIZE(struct xfs_dsb, 264); | |
| 41 | XFS_CHECK_STRUCT_SIZE(struct xfs_dsymlink_hdr, 56); | |
| 42 | XFS_CHECK_STRUCT_SIZE(struct xfs_inobt_key, 4); | |
| 43 | XFS_CHECK_STRUCT_SIZE(struct xfs_inobt_rec, 16); | |
| 1946b91c DW |
44 | XFS_CHECK_STRUCT_SIZE(struct xfs_refcount_key, 4); |
| 45 | XFS_CHECK_STRUCT_SIZE(struct xfs_refcount_rec, 12); | |
| 035e00ac DW |
46 | XFS_CHECK_STRUCT_SIZE(struct xfs_rmap_key, 20); |
| 47 | XFS_CHECK_STRUCT_SIZE(struct xfs_rmap_rec, 24); | |
| 5a0bb066 DW |
48 | XFS_CHECK_STRUCT_SIZE(xfs_timestamp_t, 8); |
| 49 | XFS_CHECK_STRUCT_SIZE(struct xfs_legacy_timestamp, 8); | |
| 30cbc591 DW |
50 | XFS_CHECK_STRUCT_SIZE(xfs_alloc_key_t, 8); |
| 51 | XFS_CHECK_STRUCT_SIZE(xfs_alloc_ptr_t, 4); | |
| 52 | XFS_CHECK_STRUCT_SIZE(xfs_alloc_rec_t, 8); | |
| 53 | XFS_CHECK_STRUCT_SIZE(xfs_inobt_ptr_t, 4); | |
| 1946b91c | 54 | XFS_CHECK_STRUCT_SIZE(xfs_refcount_ptr_t, 4); |
| 035e00ac | 55 | XFS_CHECK_STRUCT_SIZE(xfs_rmap_ptr_t, 4); |
| 30cbc591 DW |
56 | |
| 57 | /* dir/attr trees */ | |
| 58 | XFS_CHECK_STRUCT_SIZE(struct xfs_attr3_leaf_hdr, 80); | |
| a49bbce5 | 59 | XFS_CHECK_STRUCT_SIZE(struct xfs_attr3_leafblock, 80); |
| 30cbc591 DW |
60 | XFS_CHECK_STRUCT_SIZE(struct xfs_attr3_rmt_hdr, 56); |
| 61 | XFS_CHECK_STRUCT_SIZE(struct xfs_da3_blkinfo, 56); | |
| 62 | XFS_CHECK_STRUCT_SIZE(struct xfs_da3_intnode, 64); | |
| 63 | XFS_CHECK_STRUCT_SIZE(struct xfs_da3_node_hdr, 64); | |
| 64 | XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_blk_hdr, 48); | |
| 65 | XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_data_hdr, 64); | |
| 66 | XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_free, 64); | |
| 67 | XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_free_hdr, 64); | |
| 68 | XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_leaf, 64); | |
| 69 | XFS_CHECK_STRUCT_SIZE(struct xfs_dir3_leaf_hdr, 64); | |
| 70 | XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_entry_t, 8); | |
| 71 | XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_hdr_t, 32); | |
| 72 | XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_map_t, 4); | |
| 73 | XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_name_local_t, 4); | |
| 74 | ||
| 75 | /* | |
| 76 | * m68k has problems with xfs_attr_leaf_name_remote_t, but we pad it to | |
| 77 | * 4 bytes anyway so it's not obviously a problem. Hence for the moment | |
| 78 | * we don't check this structure. This can be re-instated when the attr | |
| 79 | * definitions are updated to use c99 VLA definitions. | |
| 80 | * | |
| 81 | XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_name_remote_t, 12); | |
| 82 | */ | |
| 83 | ||
| 3f94c441 DW |
84 | XFS_CHECK_OFFSET(xfs_attr_leaf_name_local_t, valuelen, 0); |
| 85 | XFS_CHECK_OFFSET(xfs_attr_leaf_name_local_t, namelen, 2); | |
| 86 | XFS_CHECK_OFFSET(xfs_attr_leaf_name_local_t, nameval, 3); | |
| 87 | XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, valueblk, 0); | |
| 88 | XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, valuelen, 4); | |
| 89 | XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, namelen, 8); | |
| 90 | XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, name, 9); | |
| a49bbce5 | 91 | XFS_CHECK_STRUCT_SIZE(xfs_attr_leafblock_t, 32); |
| f6250e20 | 92 | XFS_CHECK_STRUCT_SIZE(struct xfs_attr_shortform, 4); |
| 47e6cc10 CM |
93 | XFS_CHECK_OFFSET(struct xfs_attr_shortform, hdr.totsize, 0); |
| 94 | XFS_CHECK_OFFSET(struct xfs_attr_shortform, hdr.count, 2); | |
| 95 | XFS_CHECK_OFFSET(struct xfs_attr_shortform, list[0].namelen, 4); | |
| 96 | XFS_CHECK_OFFSET(struct xfs_attr_shortform, list[0].valuelen, 5); | |
| 97 | XFS_CHECK_OFFSET(struct xfs_attr_shortform, list[0].flags, 6); | |
| 98 | XFS_CHECK_OFFSET(struct xfs_attr_shortform, list[0].nameval, 7); | |
| 30cbc591 DW |
99 | XFS_CHECK_STRUCT_SIZE(xfs_da_blkinfo_t, 12); |
| 100 | XFS_CHECK_STRUCT_SIZE(xfs_da_intnode_t, 16); | |
| 101 | XFS_CHECK_STRUCT_SIZE(xfs_da_node_entry_t, 8); | |
| 102 | XFS_CHECK_STRUCT_SIZE(xfs_da_node_hdr_t, 16); | |
| 103 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_data_free_t, 4); | |
| 104 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_data_hdr_t, 16); | |
| 3f94c441 DW |
105 | XFS_CHECK_OFFSET(xfs_dir2_data_unused_t, freetag, 0); |
| 106 | XFS_CHECK_OFFSET(xfs_dir2_data_unused_t, length, 2); | |
| 30cbc591 DW |
107 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_free_hdr_t, 16); |
| 108 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_free_t, 16); | |
| 30cbc591 DW |
109 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_entry_t, 8); |
| 110 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_hdr_t, 16); | |
| 111 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_t, 16); | |
| 112 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_tail_t, 4); | |
| 113 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_entry_t, 3); | |
| 3f94c441 DW |
114 | XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, namelen, 0); |
| 115 | XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, offset, 1); | |
| 116 | XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, name, 3); | |
| 30cbc591 | 117 | XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_hdr_t, 10); |
| 30cbc591 DW |
118 | |
| 119 | /* log structures */ | |
| b7df5e92 | 120 | XFS_CHECK_STRUCT_SIZE(struct xfs_buf_log_format, 88); |
| 30cbc591 | 121 | XFS_CHECK_STRUCT_SIZE(struct xfs_dq_logformat, 24); |
| 03a7485c DW |
122 | XFS_CHECK_STRUCT_SIZE(struct xfs_efd_log_format_32, 16); |
| 123 | XFS_CHECK_STRUCT_SIZE(struct xfs_efd_log_format_64, 16); | |
| 124 | XFS_CHECK_STRUCT_SIZE(struct xfs_efi_log_format_32, 16); | |
| 125 | XFS_CHECK_STRUCT_SIZE(struct xfs_efi_log_format_64, 16); | |
| 30cbc591 DW |
126 | XFS_CHECK_STRUCT_SIZE(struct xfs_extent_32, 12); |
| 127 | XFS_CHECK_STRUCT_SIZE(struct xfs_extent_64, 16); | |
| 128 | XFS_CHECK_STRUCT_SIZE(struct xfs_log_dinode, 176); | |
| 129 | XFS_CHECK_STRUCT_SIZE(struct xfs_icreate_log, 28); | |
| 6fc277c7 | 130 | XFS_CHECK_STRUCT_SIZE(xfs_log_timestamp_t, 8); |
| 732de7db | 131 | XFS_CHECK_STRUCT_SIZE(struct xfs_log_legacy_timestamp, 8); |
| 30cbc591 | 132 | XFS_CHECK_STRUCT_SIZE(struct xfs_inode_log_format_32, 52); |
| 20413e37 | 133 | XFS_CHECK_STRUCT_SIZE(struct xfs_inode_log_format, 56); |
| 30cbc591 DW |
134 | XFS_CHECK_STRUCT_SIZE(struct xfs_qoff_logformat, 20); |
| 135 | XFS_CHECK_STRUCT_SIZE(struct xfs_trans_header, 16); | |
| fd920008 AH |
136 | XFS_CHECK_STRUCT_SIZE(struct xfs_attri_log_format, 40); |
| 137 | XFS_CHECK_STRUCT_SIZE(struct xfs_attrd_log_format, 16); | |
| a38ebce1 DW |
138 | XFS_CHECK_STRUCT_SIZE(struct xfs_bui_log_format, 16); |
| 139 | XFS_CHECK_STRUCT_SIZE(struct xfs_bud_log_format, 16); | |
| a38935c0 DW |
140 | XFS_CHECK_STRUCT_SIZE(struct xfs_cui_log_format, 16); |
| 141 | XFS_CHECK_STRUCT_SIZE(struct xfs_cud_log_format, 16); | |
| b45ca961 DW |
142 | XFS_CHECK_STRUCT_SIZE(struct xfs_rui_log_format, 16); |
| 143 | XFS_CHECK_STRUCT_SIZE(struct xfs_rud_log_format, 16); | |
| a38ebce1 | 144 | XFS_CHECK_STRUCT_SIZE(struct xfs_map_extent, 32); |
| a38935c0 | 145 | XFS_CHECK_STRUCT_SIZE(struct xfs_phys_extent, 16); |
| a38ebce1 DW |
146 | |
| 147 | XFS_CHECK_OFFSET(struct xfs_bui_log_format, bui_extents, 16); | |
| a38935c0 | 148 | XFS_CHECK_OFFSET(struct xfs_cui_log_format, cui_extents, 16); |
| b45ca961 | 149 | XFS_CHECK_OFFSET(struct xfs_rui_log_format, rui_extents, 16); |
| 03a7485c DW |
150 | XFS_CHECK_OFFSET(struct xfs_efi_log_format, efi_extents, 16); |
| 151 | XFS_CHECK_OFFSET(struct xfs_efi_log_format_32, efi_extents, 16); | |
| 152 | XFS_CHECK_OFFSET(struct xfs_efi_log_format_64, efi_extents, 16); | |
| 670105de BF |
153 | |
| 154 | /* | |
| 155 | * The v5 superblock format extended several v4 header structures with | |
| 156 | * additional data. While new fields are only accessible on v5 | |
| 157 | * superblocks, it's important that the v5 structures place original v4 | |
| 158 | * fields/headers in the correct location on-disk. For example, we must | |
| 159 | * be able to find magic values at the same location in certain blocks | |
| 160 | * regardless of superblock version. | |
| 161 | * | |
| 162 | * The following checks ensure that various v5 data structures place the | |
| 163 | * subset of v4 metadata associated with the same type of block at the | |
| 164 | * start of the on-disk block. If there is no data structure definition | |
| 165 | * for certain types of v4 blocks, traverse down to the first field of | |
| 166 | * common metadata (e.g., magic value) and make sure it is at offset | |
| 167 | * zero. | |
| 168 | */ | |
| 169 | XFS_CHECK_OFFSET(struct xfs_dir3_leaf, hdr.info.hdr, 0); | |
| 170 | XFS_CHECK_OFFSET(struct xfs_da3_intnode, hdr.info.hdr, 0); | |
| 171 | XFS_CHECK_OFFSET(struct xfs_dir3_data_hdr, hdr.magic, 0); | |
| 172 | XFS_CHECK_OFFSET(struct xfs_dir3_free, hdr.hdr.magic, 0); | |
| 173 | XFS_CHECK_OFFSET(struct xfs_attr3_leafblock, hdr.info.hdr, 0); | |
| 7035f972 DW |
174 | |
| 175 | XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat, 192); | |
| 5f19c7fc | 176 | XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers, 24); |
| 0448b6f4 | 177 | XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat_req, 64); |
| fba9760a | 178 | XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers_req, 64); |
| f93e5436 DW |
179 | |
| 180 | /* | |
| 181 | * Make sure the incore inode timestamp range corresponds to hand | |
| 182 | * converted values based on the ondisk format specification. | |
| 183 | */ | |
| 184 | XFS_CHECK_VALUE(XFS_BIGTIME_TIME_MIN - XFS_BIGTIME_EPOCH_OFFSET, | |
| 185 | XFS_LEGACY_TIME_MIN); | |
| 186 | XFS_CHECK_VALUE(XFS_BIGTIME_TIME_MAX - XFS_BIGTIME_EPOCH_OFFSET, | |
| 187 | 16299260424LL); | |
| 4ea1ff3b DW |
188 | |
| 189 | /* Do the same with the incore quota expiration range. */ | |
| 190 | XFS_CHECK_VALUE(XFS_DQ_BIGTIME_EXPIRY_MIN << XFS_DQ_BIGTIME_SHIFT, 4); | |
| 191 | XFS_CHECK_VALUE(XFS_DQ_BIGTIME_EXPIRY_MAX << XFS_DQ_BIGTIME_SHIFT, | |
| 192 | 16299260424LL); | |
| 30cbc591 DW |
193 | } |
| 194 | ||
| 195 | #endif /* __XFS_ONDISK_H */ |