1 /* 2 * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #ifndef __XFS_DINODE_H__ 19 #define __XFS_DINODE_H__ 20 21 struct xfs_buf; 22 struct xfs_mount; 23 24 #define XFS_DINODE_VERSION_1 1 25 #define XFS_DINODE_VERSION_2 2 26 #define XFS_DINODE_GOOD_VERSION(v) \ 27 (((v) == XFS_DINODE_VERSION_1 || (v) == XFS_DINODE_VERSION_2)) 28 #define XFS_DINODE_MAGIC 0x494e /* 'IN' */ 29 30 /* 31 * Disk inode structure. 32 * This is just the header; the inode is expanded to fill a variable size 33 * with the last field expanding. It is split into the core and "other" 34 * because we only need the core part in the in-core inode. 35 */ 36 typedef struct xfs_timestamp { 37 __int32_t t_sec; /* timestamp seconds */ 38 __int32_t t_nsec; /* timestamp nanoseconds */ 39 } xfs_timestamp_t; 40 41 /* 42 * Note: Coordinate changes to this structure with the XFS_DI_* #defines 43 * below and the offsets table in xfs_ialloc_log_di(). 44 */ 45 typedef struct xfs_dinode_core 46 { 47 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 48 __uint16_t di_mode; /* mode and type of file */ 49 __int8_t di_version; /* inode version */ 50 __int8_t di_format; /* format of di_c data */ 51 __uint16_t di_onlink; /* old number of links to file */ 52 __uint32_t di_uid; /* owner's user id */ 53 __uint32_t di_gid; /* owner's group id */ 54 __uint32_t di_nlink; /* number of links to file */ 55 __uint16_t di_projid; /* owner's project id */ 56 __uint8_t di_pad[8]; /* unused, zeroed space */ 57 __uint16_t di_flushiter; /* incremented on flush */ 58 xfs_timestamp_t di_atime; /* time last accessed */ 59 xfs_timestamp_t di_mtime; /* time last modified */ 60 xfs_timestamp_t di_ctime; /* time created/inode modified */ 61 xfs_fsize_t di_size; /* number of bytes in file */ 62 xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ 63 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 64 xfs_extnum_t di_nextents; /* number of extents in data fork */ 65 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ 66 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 67 __int8_t di_aformat; /* format of attr fork's data */ 68 __uint32_t di_dmevmask; /* DMIG event mask */ 69 __uint16_t di_dmstate; /* DMIG state info */ 70 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 71 __uint32_t di_gen; /* generation number */ 72 } xfs_dinode_core_t; 73 74 #define DI_MAX_FLUSH 0xffff 75 76 typedef struct xfs_dinode 77 { 78 xfs_dinode_core_t di_core; 79 /* 80 * In adding anything between the core and the union, be 81 * sure to update the macros like XFS_LITINO below and 82 * XFS_BMAP_RBLOCK_DSIZE in xfs_bmap_btree.h. 83 */ 84 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ 85 union { 86 xfs_bmdr_block_t di_bmbt; /* btree root block */ 87 xfs_bmbt_rec_32_t di_bmx[1]; /* extent list */ 88 xfs_dir_shortform_t di_dirsf; /* shortform directory */ 89 xfs_dir2_sf_t di_dir2sf; /* shortform directory v2 */ 90 char di_c[1]; /* local contents */ 91 xfs_dev_t di_dev; /* device for S_IFCHR/S_IFBLK */ 92 uuid_t di_muuid; /* mount point value */ 93 char di_symlink[1]; /* local symbolic link */ 94 } di_u; 95 union { 96 xfs_bmdr_block_t di_abmbt; /* btree root block */ 97 xfs_bmbt_rec_32_t di_abmx[1]; /* extent list */ 98 xfs_attr_shortform_t di_attrsf; /* shortform attribute list */ 99 } di_a; 100 } xfs_dinode_t; 101 102 /* 103 * The 32 bit link count in the inode theoretically maxes out at UINT_MAX. 104 * Since the pathconf interface is signed, we use 2^31 - 1 instead. 105 * The old inode format had a 16 bit link count, so its maximum is USHRT_MAX. 106 */ 107 #define XFS_MAXLINK ((1U << 31) - 1U) 108 #define XFS_MAXLINK_1 65535U 109 110 /* 111 * Bit names for logging disk inodes only 112 */ 113 #define XFS_DI_MAGIC 0x0000001 114 #define XFS_DI_MODE 0x0000002 115 #define XFS_DI_VERSION 0x0000004 116 #define XFS_DI_FORMAT 0x0000008 117 #define XFS_DI_ONLINK 0x0000010 118 #define XFS_DI_UID 0x0000020 119 #define XFS_DI_GID 0x0000040 120 #define XFS_DI_NLINK 0x0000080 121 #define XFS_DI_PROJID 0x0000100 122 #define XFS_DI_PAD 0x0000200 123 #define XFS_DI_ATIME 0x0000400 124 #define XFS_DI_MTIME 0x0000800 125 #define XFS_DI_CTIME 0x0001000 126 #define XFS_DI_SIZE 0x0002000 127 #define XFS_DI_NBLOCKS 0x0004000 128 #define XFS_DI_EXTSIZE 0x0008000 129 #define XFS_DI_NEXTENTS 0x0010000 130 #define XFS_DI_NAEXTENTS 0x0020000 131 #define XFS_DI_FORKOFF 0x0040000 132 #define XFS_DI_AFORMAT 0x0080000 133 #define XFS_DI_DMEVMASK 0x0100000 134 #define XFS_DI_DMSTATE 0x0200000 135 #define XFS_DI_FLAGS 0x0400000 136 #define XFS_DI_GEN 0x0800000 137 #define XFS_DI_NEXT_UNLINKED 0x1000000 138 #define XFS_DI_U 0x2000000 139 #define XFS_DI_A 0x4000000 140 #define XFS_DI_NUM_BITS 27 141 #define XFS_DI_ALL_BITS ((1 << XFS_DI_NUM_BITS) - 1) 142 #define XFS_DI_CORE_BITS (XFS_DI_ALL_BITS & ~(XFS_DI_U|XFS_DI_A)) 143 144 /* 145 * Values for di_format 146 */ 147 typedef enum xfs_dinode_fmt 148 { 149 XFS_DINODE_FMT_DEV, /* CHR, BLK: di_dev */ 150 XFS_DINODE_FMT_LOCAL, /* DIR, REG: di_c */ 151 /* LNK: di_symlink */ 152 XFS_DINODE_FMT_EXTENTS, /* DIR, REG, LNK: di_bmx */ 153 XFS_DINODE_FMT_BTREE, /* DIR, REG, LNK: di_bmbt */ 154 XFS_DINODE_FMT_UUID /* MNT: di_uuid */ 155 } xfs_dinode_fmt_t; 156 157 /* 158 * Inode minimum and maximum sizes. 159 */ 160 #define XFS_DINODE_MIN_LOG 8 161 #define XFS_DINODE_MAX_LOG 11 162 #define XFS_DINODE_MIN_SIZE (1 << XFS_DINODE_MIN_LOG) 163 #define XFS_DINODE_MAX_SIZE (1 << XFS_DINODE_MAX_LOG) 164 165 /* 166 * Inode size for given fs. 167 */ 168 #define XFS_LITINO(mp) ((mp)->m_litino) 169 #define XFS_BROOT_SIZE_ADJ \ 170 (sizeof(xfs_bmbt_block_t) - sizeof(xfs_bmdr_block_t)) 171 172 /* 173 * Inode data & attribute fork sizes, per inode. 174 */ 175 #define XFS_CFORK_Q(dcp) ((dcp)->di_forkoff != 0) 176 #define XFS_CFORK_Q_DISK(dcp) ((dcp)->di_forkoff != 0) 177 178 #define XFS_CFORK_BOFF(dcp) ((int)((dcp)->di_forkoff << 3)) 179 #define XFS_CFORK_BOFF_DISK(dcp) \ 180 ((int)(INT_GET((dcp)->di_forkoff, ARCH_CONVERT) << 3)) 181 182 #define XFS_CFORK_DSIZE_DISK(dcp,mp) \ 183 (XFS_CFORK_Q_DISK(dcp) ? XFS_CFORK_BOFF_DISK(dcp) : XFS_LITINO(mp)) 184 #define XFS_CFORK_DSIZE(dcp,mp) \ 185 (XFS_CFORK_Q(dcp) ? XFS_CFORK_BOFF(dcp) : XFS_LITINO(mp)) 186 187 #define XFS_CFORK_ASIZE_DISK(dcp,mp) \ 188 (XFS_CFORK_Q_DISK(dcp) ? XFS_LITINO(mp) - XFS_CFORK_BOFF_DISK(dcp) : 0) 189 #define XFS_CFORK_ASIZE(dcp,mp) \ 190 (XFS_CFORK_Q(dcp) ? XFS_LITINO(mp) - XFS_CFORK_BOFF(dcp) : 0) 191 192 #define XFS_CFORK_SIZE_DISK(dcp,mp,w) \ 193 ((w) == XFS_DATA_FORK ? \ 194 XFS_CFORK_DSIZE_DISK(dcp, mp) : \ 195 XFS_CFORK_ASIZE_DISK(dcp, mp)) 196 #define XFS_CFORK_SIZE(dcp,mp,w) \ 197 ((w) == XFS_DATA_FORK ? \ 198 XFS_CFORK_DSIZE(dcp, mp) : XFS_CFORK_ASIZE(dcp, mp)) 199 200 #define XFS_DFORK_DSIZE(dip,mp) \ 201 XFS_CFORK_DSIZE_DISK(&(dip)->di_core, mp) 202 #define XFS_DFORK_DSIZE_HOST(dip,mp) \ 203 XFS_CFORK_DSIZE(&(dip)->di_core, mp) 204 #define XFS_DFORK_ASIZE(dip,mp) \ 205 XFS_CFORK_ASIZE_DISK(&(dip)->di_core, mp) 206 #define XFS_DFORK_ASIZE_HOST(dip,mp) \ 207 XFS_CFORK_ASIZE(&(dip)->di_core, mp) 208 #define XFS_DFORK_SIZE(dip,mp,w) \ 209 XFS_CFORK_SIZE_DISK(&(dip)->di_core, mp, w) 210 #define XFS_DFORK_SIZE_HOST(dip,mp,w) \ 211 XFS_CFORK_SIZE(&(dip)->di_core, mp, w) 212 213 #define XFS_DFORK_Q(dip) XFS_CFORK_Q_DISK(&(dip)->di_core) 214 #define XFS_DFORK_BOFF(dip) XFS_CFORK_BOFF_DISK(&(dip)->di_core) 215 #define XFS_DFORK_DPTR(dip) ((dip)->di_u.di_c) 216 #define XFS_DFORK_APTR(dip) \ 217 ((dip)->di_u.di_c + XFS_DFORK_BOFF(dip)) 218 #define XFS_DFORK_PTR(dip,w) \ 219 ((w) == XFS_DATA_FORK ? XFS_DFORK_DPTR(dip) : XFS_DFORK_APTR(dip)) 220 #define XFS_CFORK_FORMAT(dcp,w) \ 221 ((w) == XFS_DATA_FORK ? (dcp)->di_format : (dcp)->di_aformat) 222 #define XFS_CFORK_FMT_SET(dcp,w,n) \ 223 ((w) == XFS_DATA_FORK ? \ 224 ((dcp)->di_format = (n)) : ((dcp)->di_aformat = (n))) 225 #define XFS_DFORK_FORMAT(dip,w) XFS_CFORK_FORMAT(&(dip)->di_core, w) 226 227 #define XFS_CFORK_NEXTENTS_DISK(dcp,w) \ 228 ((w) == XFS_DATA_FORK ? \ 229 INT_GET((dcp)->di_nextents, ARCH_CONVERT) : \ 230 INT_GET((dcp)->di_anextents, ARCH_CONVERT)) 231 #define XFS_CFORK_NEXTENTS(dcp,w) \ 232 ((w) == XFS_DATA_FORK ? (dcp)->di_nextents : (dcp)->di_anextents) 233 #define XFS_DFORK_NEXTENTS(dip,w) XFS_CFORK_NEXTENTS_DISK(&(dip)->di_core, w) 234 #define XFS_DFORK_NEXTENTS_HOST(dip,w) XFS_CFORK_NEXTENTS(&(dip)->di_core, w) 235 236 #define XFS_CFORK_NEXT_SET(dcp,w,n) \ 237 ((w) == XFS_DATA_FORK ? \ 238 ((dcp)->di_nextents = (n)) : ((dcp)->di_anextents = (n))) 239 240 #define XFS_BUF_TO_DINODE(bp) ((xfs_dinode_t *)XFS_BUF_PTR(bp)) 241 242 /* 243 * Values for di_flags 244 * There should be a one-to-one correspondence between these flags and the 245 * XFS_XFLAG_s. 246 */ 247 #define XFS_DIFLAG_REALTIME_BIT 0 /* file's blocks come from rt area */ 248 #define XFS_DIFLAG_PREALLOC_BIT 1 /* file space has been preallocated */ 249 #define XFS_DIFLAG_NEWRTBM_BIT 2 /* for rtbitmap inode, new format */ 250 #define XFS_DIFLAG_IMMUTABLE_BIT 3 /* inode is immutable */ 251 #define XFS_DIFLAG_APPEND_BIT 4 /* inode is append-only */ 252 #define XFS_DIFLAG_SYNC_BIT 5 /* inode is written synchronously */ 253 #define XFS_DIFLAG_NOATIME_BIT 6 /* do not update atime */ 254 #define XFS_DIFLAG_NODUMP_BIT 7 /* do not dump */ 255 #define XFS_DIFLAG_RTINHERIT_BIT 8 /* create with realtime bit set */ 256 #define XFS_DIFLAG_PROJINHERIT_BIT 9 /* create with parents projid */ 257 #define XFS_DIFLAG_NOSYMLINKS_BIT 10 /* disallow symlink creation */ 258 #define XFS_DIFLAG_EXTSIZE_BIT 11 /* inode extent size allocator hint */ 259 #define XFS_DIFLAG_EXTSZINHERIT_BIT 12 /* inherit inode extent size */ 260 #define XFS_DIFLAG_REALTIME (1 << XFS_DIFLAG_REALTIME_BIT) 261 #define XFS_DIFLAG_PREALLOC (1 << XFS_DIFLAG_PREALLOC_BIT) 262 #define XFS_DIFLAG_NEWRTBM (1 << XFS_DIFLAG_NEWRTBM_BIT) 263 #define XFS_DIFLAG_IMMUTABLE (1 << XFS_DIFLAG_IMMUTABLE_BIT) 264 #define XFS_DIFLAG_APPEND (1 << XFS_DIFLAG_APPEND_BIT) 265 #define XFS_DIFLAG_SYNC (1 << XFS_DIFLAG_SYNC_BIT) 266 #define XFS_DIFLAG_NOATIME (1 << XFS_DIFLAG_NOATIME_BIT) 267 #define XFS_DIFLAG_NODUMP (1 << XFS_DIFLAG_NODUMP_BIT) 268 #define XFS_DIFLAG_RTINHERIT (1 << XFS_DIFLAG_RTINHERIT_BIT) 269 #define XFS_DIFLAG_PROJINHERIT (1 << XFS_DIFLAG_PROJINHERIT_BIT) 270 #define XFS_DIFLAG_NOSYMLINKS (1 << XFS_DIFLAG_NOSYMLINKS_BIT) 271 #define XFS_DIFLAG_EXTSIZE (1 << XFS_DIFLAG_EXTSIZE_BIT) 272 #define XFS_DIFLAG_EXTSZINHERIT (1 << XFS_DIFLAG_EXTSZINHERIT_BIT) 273 274 #define XFS_DIFLAG_ANY \ 275 (XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \ 276 XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \ 277 XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \ 278 XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS | XFS_DIFLAG_EXTSIZE | \ 279 XFS_DIFLAG_EXTSZINHERIT) 280 281 #endif /* __XFS_DINODE_H__ */ 282