1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_LOG_FORMAT_H__ 7 #define __XFS_LOG_FORMAT_H__ 8 9 struct xfs_mount; 10 struct xfs_trans_res; 11 12 /* 13 * On-disk Log Format definitions. 14 * 15 * This file contains all the on-disk format definitions used within the log. It 16 * includes the physical log structure itself, as well as all the log item 17 * format structures that are written into the log and intepreted by log 18 * recovery. We start with the physical log format definitions, and then work 19 * through all the log items definitions and everything they encode into the 20 * log. 21 */ 22 typedef uint32_t xlog_tid_t; 23 24 #define XLOG_MIN_ICLOGS 2 25 #define XLOG_MAX_ICLOGS 8 26 #define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */ 27 #define XLOG_VERSION_1 1 28 #define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */ 29 #define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2) 30 #define XLOG_MIN_RECORD_BSIZE (16*1024) /* eventually 32k */ 31 #define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */ 32 #define XLOG_MAX_RECORD_BSIZE (256*1024) 33 #define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */ 34 #define XLOG_CYCLE_DATA_SIZE (XLOG_HEADER_CYCLE_SIZE / BBSIZE) 35 #define XLOG_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */ 36 #define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */ 37 #define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */ 38 39 #define XLOG_HEADER_SIZE 512 40 41 /* Minimum number of transactions that must fit in the log (defined by mkfs) */ 42 #define XFS_MIN_LOG_FACTOR 3 43 44 #define XLOG_REC_SHIFT(log) \ 45 BTOBB(1 << (xfs_has_logv2(log->l_mp) ? \ 46 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) 47 #define XLOG_TOTAL_REC_SHIFT(log) \ 48 BTOBB(XLOG_MAX_ICLOGS << (xfs_has_logv2(log->l_mp) ? \ 49 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) 50 51 /* get lsn fields */ 52 #define CYCLE_LSN(lsn) ((uint)((lsn)>>32)) 53 #define BLOCK_LSN(lsn) ((uint)(lsn)) 54 55 /* this is used in a spot where we might otherwise double-endian-flip */ 56 #define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0]) 57 58 static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block) 59 { 60 return ((xfs_lsn_t)cycle << 32) | block; 61 } 62 63 static inline uint xlog_get_cycle(char *ptr) 64 { 65 if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM) 66 return be32_to_cpu(*((__be32 *)ptr + 1)); 67 else 68 return be32_to_cpu(*(__be32 *)ptr); 69 } 70 71 /* Log Clients */ 72 #define XFS_TRANSACTION 0x69 73 #define XFS_LOG 0xaa 74 75 #define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */ 76 77 /* 78 * Log item for unmount records. 79 * 80 * The unmount record used to have a string "Unmount filesystem--" in the 81 * data section where the "Un" was really a magic number (XLOG_UNMOUNT_TYPE). 82 * We just write the magic number now; see xfs_log_unmount_write. 83 */ 84 struct xfs_unmount_log_format { 85 uint16_t magic; /* XLOG_UNMOUNT_TYPE */ 86 uint16_t pad1; 87 uint32_t pad2; /* may as well make it 64 bits */ 88 }; 89 90 /* 91 * Flags to log operation header 92 * 93 * The first write of a new transaction will be preceded with a start 94 * record, XLOG_START_TRANS. Once a transaction is committed, a commit 95 * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into 96 * the remainder of the current active in-core log, it is split up into 97 * multiple regions. Each partial region will be marked with a 98 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS. 99 * 100 */ 101 #define XLOG_START_TRANS 0x01 /* Start a new transaction */ 102 #define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */ 103 #define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */ 104 #define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */ 105 #define XLOG_END_TRANS 0x10 /* End a continued transaction */ 106 #define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */ 107 108 struct xlog_op_header { 109 __be32 oh_tid; /* transaction id of operation : 4 b */ 110 __be32 oh_len; /* bytes in data region : 4 b */ 111 __u8 oh_clientid; /* who sent me this : 1 b */ 112 __u8 oh_flags; /* : 1 b */ 113 __u16 oh_res2; /* 32 bit align : 2 b */ 114 }; 115 116 /* valid values for h_fmt */ 117 #define XLOG_FMT_UNKNOWN 0 118 #define XLOG_FMT_LINUX_LE 1 119 #define XLOG_FMT_LINUX_BE 2 120 #define XLOG_FMT_IRIX_BE 3 121 122 /* our fmt */ 123 #ifdef XFS_NATIVE_HOST 124 #define XLOG_FMT XLOG_FMT_LINUX_BE 125 #else 126 #define XLOG_FMT XLOG_FMT_LINUX_LE 127 #endif 128 129 struct xlog_rec_ext_header { 130 __be32 xh_cycle; /* write cycle of log */ 131 __be32 xh_cycle_data[XLOG_CYCLE_DATA_SIZE]; 132 __u8 xh_reserved[252]; 133 }; 134 135 /* actual ext header payload size for checksumming */ 136 #define XLOG_REC_EXT_SIZE \ 137 offsetofend(struct xlog_rec_ext_header, xh_cycle_data) 138 139 struct xlog_rec_header { 140 __be32 h_magicno; /* log record (LR) identifier : 4 */ 141 __be32 h_cycle; /* write cycle of log : 4 */ 142 __be32 h_version; /* LR version : 4 */ 143 __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */ 144 __be64 h_lsn; /* lsn of this LR : 8 */ 145 __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */ 146 __le32 h_crc; /* crc of log record : 4 */ 147 __be32 h_prev_block; /* block number to previous LR : 4 */ 148 __be32 h_num_logops; /* number of log operations in this LR : 4 */ 149 __be32 h_cycle_data[XLOG_CYCLE_DATA_SIZE]; 150 151 /* fields added by the Linux port: */ 152 __be32 h_fmt; /* format of log record : 4 */ 153 uuid_t h_fs_uuid; /* uuid of FS : 16 */ 154 155 /* fields added for log v2: */ 156 __be32 h_size; /* iclog size : 4 */ 157 158 /* 159 * When h_size added for log v2 support, it caused structure to have 160 * a different size on i386 vs all other architectures because the 161 * sum of the size ofthe member is not aligned by that of the largest 162 * __be64-sized member, and i386 has really odd struct alignment rules. 163 * 164 * Due to the way the log headers are placed out on-disk that alone is 165 * not a problem becaue the xlog_rec_header always sits alone in a 166 * BBSIZEs area, and the rest of that area is padded with zeroes. 167 * But xlog_cksum used to calculate the checksum based on the structure 168 * size, and thus gives different checksums for i386 vs the rest. 169 * We now do two checksum validation passes for both sizes to allow 170 * moving v5 file systems with unclean logs between i386 and other 171 * (little-endian) architectures. 172 */ 173 __u32 h_pad0; 174 175 __u8 h_reserved[184]; 176 struct xlog_rec_ext_header h_ext[]; 177 }; 178 179 #ifdef __i386__ 180 #define XLOG_REC_SIZE offsetofend(struct xlog_rec_header, h_size) 181 #define XLOG_REC_SIZE_OTHER offsetofend(struct xlog_rec_header, h_pad0) 182 #else 183 #define XLOG_REC_SIZE offsetofend(struct xlog_rec_header, h_pad0) 184 #define XLOG_REC_SIZE_OTHER offsetofend(struct xlog_rec_header, h_size) 185 #endif /* __i386__ */ 186 187 /* 188 * Transaction Header definitions. 189 * 190 * This is the structure written in the log at the head of every transaction. It 191 * identifies the type and id of the transaction, and contains the number of 192 * items logged by the transaction so we know how many to expect during 193 * recovery. 194 * 195 * Do not change the below structure without redoing the code in 196 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans(). 197 */ 198 struct xfs_trans_header { 199 uint th_magic; /* magic number */ 200 uint th_type; /* transaction type */ 201 int32_t th_tid; /* transaction id (unused) */ 202 uint th_num_items; /* num items logged by trans */ 203 }; 204 205 #define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */ 206 207 /* 208 * The only type valid for th_type in CIL-enabled file system logs: 209 */ 210 #define XFS_TRANS_CHECKPOINT 40 211 212 /* 213 * Log item types. 214 */ 215 #define XFS_LI_EFI 0x1236 216 #define XFS_LI_EFD 0x1237 217 #define XFS_LI_IUNLINK 0x1238 218 #define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */ 219 #define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */ 220 #define XFS_LI_DQUOT 0x123d 221 #define XFS_LI_QUOTAOFF 0x123e 222 #define XFS_LI_ICREATE 0x123f 223 #define XFS_LI_RUI 0x1240 /* rmap update intent */ 224 #define XFS_LI_RUD 0x1241 225 #define XFS_LI_CUI 0x1242 /* refcount update intent */ 226 #define XFS_LI_CUD 0x1243 227 #define XFS_LI_BUI 0x1244 /* bmbt update intent */ 228 #define XFS_LI_BUD 0x1245 229 #define XFS_LI_ATTRI 0x1246 /* attr set/remove intent*/ 230 #define XFS_LI_ATTRD 0x1247 /* attr set/remove done */ 231 #define XFS_LI_XMI 0x1248 /* mapping exchange intent */ 232 #define XFS_LI_XMD 0x1249 /* mapping exchange done */ 233 #define XFS_LI_EFI_RT 0x124a /* realtime extent free intent */ 234 #define XFS_LI_EFD_RT 0x124b /* realtime extent free done */ 235 #define XFS_LI_RUI_RT 0x124c /* realtime rmap update intent */ 236 #define XFS_LI_RUD_RT 0x124d /* realtime rmap update done */ 237 #define XFS_LI_CUI_RT 0x124e /* realtime refcount update intent */ 238 #define XFS_LI_CUD_RT 0x124f /* realtime refcount update done */ 239 240 #define XFS_LI_TYPE_DESC \ 241 { XFS_LI_EFI, "XFS_LI_EFI" }, \ 242 { XFS_LI_EFD, "XFS_LI_EFD" }, \ 243 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \ 244 { XFS_LI_INODE, "XFS_LI_INODE" }, \ 245 { XFS_LI_BUF, "XFS_LI_BUF" }, \ 246 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \ 247 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \ 248 { XFS_LI_ICREATE, "XFS_LI_ICREATE" }, \ 249 { XFS_LI_RUI, "XFS_LI_RUI" }, \ 250 { XFS_LI_RUD, "XFS_LI_RUD" }, \ 251 { XFS_LI_CUI, "XFS_LI_CUI" }, \ 252 { XFS_LI_CUD, "XFS_LI_CUD" }, \ 253 { XFS_LI_BUI, "XFS_LI_BUI" }, \ 254 { XFS_LI_BUD, "XFS_LI_BUD" }, \ 255 { XFS_LI_ATTRI, "XFS_LI_ATTRI" }, \ 256 { XFS_LI_ATTRD, "XFS_LI_ATTRD" }, \ 257 { XFS_LI_XMI, "XFS_LI_XMI" }, \ 258 { XFS_LI_XMD, "XFS_LI_XMD" }, \ 259 { XFS_LI_EFI_RT, "XFS_LI_EFI_RT" }, \ 260 { XFS_LI_EFD_RT, "XFS_LI_EFD_RT" }, \ 261 { XFS_LI_RUI_RT, "XFS_LI_RUI_RT" }, \ 262 { XFS_LI_RUD_RT, "XFS_LI_RUD_RT" }, \ 263 { XFS_LI_CUI_RT, "XFS_LI_CUI_RT" }, \ 264 { XFS_LI_CUD_RT, "XFS_LI_CUD_RT" } 265 266 /* 267 * Inode Log Item Format definitions. 268 * 269 * This is the structure used to lay out an inode log item in the 270 * log. The size of the inline data/extents/b-tree root to be logged 271 * (if any) is indicated in the ilf_dsize field. Changes to this structure 272 * must be added on to the end. 273 */ 274 struct xfs_inode_log_format { 275 uint16_t ilf_type; /* inode log item type */ 276 uint16_t ilf_size; /* size of this item */ 277 uint32_t ilf_fields; /* flags for fields logged */ 278 uint16_t ilf_asize; /* size of attr d/ext/root */ 279 uint16_t ilf_dsize; /* size of data/ext/root */ 280 uint32_t ilf_pad; /* pad for 64 bit boundary */ 281 uint64_t ilf_ino; /* inode number */ 282 union { 283 uint32_t ilfu_rdev; /* rdev value for dev inode*/ 284 uint8_t __pad[16]; /* unused */ 285 } ilf_u; 286 int64_t ilf_blkno; /* blkno of inode buffer */ 287 int32_t ilf_len; /* len of inode buffer */ 288 int32_t ilf_boffset; /* off of inode in buffer */ 289 }; 290 291 /* 292 * Old 32 bit systems will log in this format without the 64 bit 293 * alignment padding. Recovery will detect this and convert it to the 294 * correct format. 295 */ 296 struct xfs_inode_log_format_32 { 297 uint16_t ilf_type; /* inode log item type */ 298 uint16_t ilf_size; /* size of this item */ 299 uint32_t ilf_fields; /* flags for fields logged */ 300 uint16_t ilf_asize; /* size of attr d/ext/root */ 301 uint16_t ilf_dsize; /* size of data/ext/root */ 302 uint64_t ilf_ino; /* inode number */ 303 union { 304 uint32_t ilfu_rdev; /* rdev value for dev inode*/ 305 uint8_t __pad[16]; /* unused */ 306 } ilf_u; 307 int64_t ilf_blkno; /* blkno of inode buffer */ 308 int32_t ilf_len; /* len of inode buffer */ 309 int32_t ilf_boffset; /* off of inode in buffer */ 310 } __attribute__((packed)); 311 312 313 /* 314 * Flags for xfs_trans_log_inode flags field. 315 */ 316 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */ 317 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ 318 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ 319 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ 320 #define XFS_ILOG_DEV 0x010 /* log the dev field */ 321 #define XFS_ILOG_UUID 0x020 /* added long ago, but never used */ 322 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ 323 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ 324 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ 325 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */ 326 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */ 327 328 /* 329 * The timestamps are dirty, but not necessarily anything else in the inode 330 * core. Unlike the other fields above this one must never make it to disk 331 * in the ilf_fields of the inode_log_format, but is purely store in-memory in 332 * ili_fields in the inode_log_item. 333 */ 334 #define XFS_ILOG_TIMESTAMP 0x4000 335 336 /* 337 * The version field has been changed, but not necessarily anything else of 338 * interest. This must never make it to disk - it is used purely to ensure that 339 * the inode item ->precommit operation can update the fsync flag triggers 340 * in the inode item correctly. 341 */ 342 #define XFS_ILOG_IVERSION 0x8000 343 344 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 345 XFS_ILOG_DBROOT) 346 347 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 348 XFS_ILOG_ABROOT) 349 350 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \ 351 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \ 352 XFS_ILOG_DEV | XFS_ILOG_ADATA | \ 353 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \ 354 XFS_ILOG_TIMESTAMP | XFS_ILOG_DOWNER | \ 355 XFS_ILOG_AOWNER) 356 357 static inline int xfs_ilog_fbroot(int w) 358 { 359 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT); 360 } 361 362 static inline int xfs_ilog_fext(int w) 363 { 364 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT); 365 } 366 367 static inline int xfs_ilog_fdata(int w) 368 { 369 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA); 370 } 371 372 /* 373 * Incore version of the on-disk inode core structures. We log this directly 374 * into the journal in host CPU format (for better or worse) and as such 375 * directly mirrors the xfs_dinode structure as it must contain all the same 376 * information. 377 */ 378 typedef uint64_t xfs_log_timestamp_t; 379 380 /* Legacy timestamp encoding format. */ 381 struct xfs_log_legacy_timestamp { 382 int32_t t_sec; /* timestamp seconds */ 383 int32_t t_nsec; /* timestamp nanoseconds */ 384 }; 385 386 /* 387 * Define the format of the inode core that is logged. This structure must be 388 * kept identical to struct xfs_dinode except for the endianness annotations. 389 */ 390 struct xfs_log_dinode { 391 uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 392 uint16_t di_mode; /* mode and type of file */ 393 int8_t di_version; /* inode version */ 394 int8_t di_format; /* format of di_c data */ 395 uint16_t di_metatype; /* metadata type, if DIFLAG2_METADATA */ 396 uint32_t di_uid; /* owner's user id */ 397 uint32_t di_gid; /* owner's group id */ 398 uint32_t di_nlink; /* number of links to file */ 399 uint16_t di_projid_lo; /* lower part of owner's project id */ 400 uint16_t di_projid_hi; /* higher part of owner's project id */ 401 union { 402 /* Number of data fork extents if NREXT64 is set */ 403 uint64_t di_big_nextents; 404 405 /* Padding for V3 inodes without NREXT64 set. */ 406 uint64_t di_v3_pad; 407 408 /* Padding and inode flush counter for V2 inodes. */ 409 struct { 410 uint8_t di_v2_pad[6]; /* V2 inode zeroed space */ 411 uint16_t di_flushiter; /* V2 inode incremented on flush */ 412 }; 413 }; 414 xfs_log_timestamp_t di_atime; /* time last accessed */ 415 xfs_log_timestamp_t di_mtime; /* time last modified */ 416 xfs_log_timestamp_t di_ctime; /* time created/inode modified */ 417 xfs_fsize_t di_size; /* number of bytes in file */ 418 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */ 419 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 420 union { 421 /* 422 * For V2 inodes and V3 inodes without NREXT64 set, this 423 * is the number of data and attr fork extents. 424 */ 425 struct { 426 uint32_t di_nextents; 427 uint16_t di_anextents; 428 } __packed; 429 430 /* Number of attr fork extents if NREXT64 is set. */ 431 struct { 432 uint32_t di_big_anextents; 433 uint16_t di_nrext64_pad; 434 } __packed; 435 } __packed; 436 uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 437 int8_t di_aformat; /* format of attr fork's data */ 438 uint32_t di_dmevmask; /* DMIG event mask */ 439 uint16_t di_dmstate; /* DMIG state info */ 440 uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 441 uint32_t di_gen; /* generation number */ 442 443 /* di_next_unlinked is the only non-core field in the old dinode */ 444 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ 445 446 /* start of the extended dinode, writable fields */ 447 uint32_t di_crc; /* CRC of the inode */ 448 uint64_t di_changecount; /* number of attribute changes */ 449 450 /* 451 * The LSN we write to this field during formatting is not a reflection 452 * of the current on-disk LSN. It should never be used for recovery 453 * sequencing, nor should it be recovered into the on-disk inode at all. 454 * See xlog_recover_inode_commit_pass2() and xfs_log_dinode_to_disk() 455 * for details. 456 */ 457 xfs_lsn_t di_lsn; 458 459 uint64_t di_flags2; /* more random flags */ 460 union { 461 /* basic cow extent size for (regular) file */ 462 uint32_t di_cowextsize; 463 /* used blocks in RTG for (zoned) rtrmap inode */ 464 uint32_t di_used_blocks; 465 }; 466 uint8_t di_pad2[12]; /* more padding for future expansion */ 467 468 /* fields only written to during inode creation */ 469 xfs_log_timestamp_t di_crtime; /* time created */ 470 xfs_ino_t di_ino; /* inode number */ 471 uuid_t di_uuid; /* UUID of the filesystem */ 472 473 /* structure must be padded to 64 bit alignment */ 474 }; 475 476 #define xfs_log_dinode_size(mp) \ 477 (xfs_has_v3inodes((mp)) ? \ 478 sizeof(struct xfs_log_dinode) : \ 479 offsetof(struct xfs_log_dinode, di_next_unlinked)) 480 481 /* 482 * Buffer Log Format definitions 483 * 484 * These are the physical dirty bitmap definitions for the log format structure. 485 */ 486 #define XFS_BLF_CHUNK 128 487 #define XFS_BLF_SHIFT 7 488 #define BIT_TO_WORD_SHIFT 5 489 #define NBWORD (NBBY * sizeof(unsigned int)) 490 491 /* 492 * This flag indicates that the buffer contains on disk inodes 493 * and requires special recovery handling. 494 */ 495 #define XFS_BLF_INODE_BUF (1<<0) 496 497 /* 498 * This flag indicates that the buffer should not be replayed 499 * during recovery because its blocks are being freed. 500 */ 501 #define XFS_BLF_CANCEL (1<<1) 502 503 /* 504 * This flag indicates that the buffer contains on disk 505 * user or group dquots and may require special recovery handling. 506 */ 507 #define XFS_BLF_UDQUOT_BUF (1<<2) 508 #define XFS_BLF_PDQUOT_BUF (1<<3) 509 #define XFS_BLF_GDQUOT_BUF (1<<4) 510 511 /* 512 * This is the structure used to lay out a buf log item in the log. The data 513 * map describes which 128 byte chunks of the buffer have been logged. 514 * 515 * The placement of blf_map_size causes blf_data_map to start at an odd 516 * multiple of sizeof(unsigned int) offset within the struct. Because the data 517 * bitmap size will always be an even number, the end of the data_map (and 518 * therefore the structure) will also be at an odd multiple of sizeof(unsigned 519 * int). Some 64-bit compilers will insert padding at the end of the struct to 520 * ensure 64-bit alignment of blf_blkno, but 32-bit ones will not. Therefore, 521 * XFS_BLF_DATAMAP_SIZE must be an odd number to make the padding explicit and 522 * keep the structure size consistent between 32-bit and 64-bit platforms. 523 */ 524 #define __XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) 525 #define XFS_BLF_DATAMAP_SIZE (__XFS_BLF_DATAMAP_SIZE + 1) 526 527 struct xfs_buf_log_format { 528 unsigned short blf_type; /* buf log item type indicator */ 529 unsigned short blf_size; /* size of this item */ 530 unsigned short blf_flags; /* misc state */ 531 unsigned short blf_len; /* number of blocks in this buf */ 532 int64_t blf_blkno; /* starting blkno of this buf */ 533 unsigned int blf_map_size; /* used size of data bitmap in words */ 534 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */ 535 }; 536 537 /* 538 * All buffers now need to tell recovery where the magic number 539 * is so that it can verify and calculate the CRCs on the buffer correctly 540 * once the changes have been replayed into the buffer. 541 * 542 * The type value is held in the upper 5 bits of the blf_flags field, which is 543 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down. 544 */ 545 #define XFS_BLFT_BITS 5 546 #define XFS_BLFT_SHIFT 11 547 #define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT) 548 549 enum xfs_blft { 550 XFS_BLFT_UNKNOWN_BUF = 0, 551 XFS_BLFT_UDQUOT_BUF, 552 XFS_BLFT_PDQUOT_BUF, 553 XFS_BLFT_GDQUOT_BUF, 554 XFS_BLFT_BTREE_BUF, 555 XFS_BLFT_AGF_BUF, 556 XFS_BLFT_AGFL_BUF, 557 XFS_BLFT_AGI_BUF, 558 XFS_BLFT_DINO_BUF, 559 XFS_BLFT_SYMLINK_BUF, 560 XFS_BLFT_DIR_BLOCK_BUF, 561 XFS_BLFT_DIR_DATA_BUF, 562 XFS_BLFT_DIR_FREE_BUF, 563 XFS_BLFT_DIR_LEAF1_BUF, 564 XFS_BLFT_DIR_LEAFN_BUF, 565 XFS_BLFT_DA_NODE_BUF, 566 XFS_BLFT_ATTR_LEAF_BUF, 567 XFS_BLFT_ATTR_RMT_BUF, 568 XFS_BLFT_SB_BUF, 569 XFS_BLFT_RTBITMAP_BUF, 570 XFS_BLFT_RTSUMMARY_BUF, 571 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS), 572 }; 573 574 static inline void 575 xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type) 576 { 577 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF); 578 blf->blf_flags &= ~XFS_BLFT_MASK; 579 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK); 580 } 581 582 static inline uint16_t 583 xfs_blft_from_flags(struct xfs_buf_log_format *blf) 584 { 585 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; 586 } 587 588 /* 589 * EFI/EFD log format definitions 590 */ 591 struct xfs_extent { 592 xfs_fsblock_t ext_start; 593 xfs_extlen_t ext_len; 594 }; 595 596 /* 597 * Since the structures in struct xfs_extent add up to 96 bytes, it has 598 * different alignments on i386 vs all other architectures, because i386 599 * does not pad structures to their natural alignment. 600 * 601 * Provide the different variants for use by a conversion routine. 602 */ 603 struct xfs_extent_32 { 604 uint64_t ext_start; 605 uint32_t ext_len; 606 } __attribute__((packed)); 607 608 struct xfs_extent_64 { 609 uint64_t ext_start; 610 uint32_t ext_len; 611 uint32_t ext_pad; 612 }; 613 614 /* 615 * This is the structure used to lay out an efi log item in the 616 * log. The efi_extents field is a variable size array whose 617 * size is given by efi_nextents. 618 */ 619 struct xfs_efi_log_format { 620 uint16_t efi_type; /* efi log item type */ 621 uint16_t efi_size; /* size of this item */ 622 uint32_t efi_nextents; /* # extents to free */ 623 uint64_t efi_id; /* efi identifier */ 624 struct xfs_extent efi_extents[]; /* array of extents to free */ 625 }; 626 627 static inline size_t 628 xfs_efi_log_format_sizeof( 629 unsigned int nr) 630 { 631 return sizeof(struct xfs_efi_log_format) + 632 nr * sizeof(struct xfs_extent); 633 } 634 635 struct xfs_efi_log_format_32 { 636 uint16_t efi_type; /* efi log item type */ 637 uint16_t efi_size; /* size of this item */ 638 uint32_t efi_nextents; /* # extents to free */ 639 uint64_t efi_id; /* efi identifier */ 640 struct xfs_extent_32 efi_extents[]; /* array of extents to free */ 641 } __attribute__((packed)); 642 643 static inline size_t 644 xfs_efi_log_format32_sizeof( 645 unsigned int nr) 646 { 647 return sizeof(struct xfs_efi_log_format_32) + 648 nr * sizeof(struct xfs_extent_32); 649 } 650 651 struct xfs_efi_log_format_64 { 652 uint16_t efi_type; /* efi log item type */ 653 uint16_t efi_size; /* size of this item */ 654 uint32_t efi_nextents; /* # extents to free */ 655 uint64_t efi_id; /* efi identifier */ 656 struct xfs_extent_64 efi_extents[]; /* array of extents to free */ 657 }; 658 659 static inline size_t 660 xfs_efi_log_format64_sizeof( 661 unsigned int nr) 662 { 663 return sizeof(struct xfs_efi_log_format_64) + 664 nr * sizeof(struct xfs_extent_64); 665 } 666 667 /* 668 * This is the structure used to lay out an efd log item in the 669 * log. The efd_extents array is a variable size array whose 670 * size is given by efd_nextents; 671 */ 672 struct xfs_efd_log_format { 673 uint16_t efd_type; /* efd log item type */ 674 uint16_t efd_size; /* size of this item */ 675 uint32_t efd_nextents; /* # of extents freed */ 676 uint64_t efd_efi_id; /* id of corresponding efi */ 677 struct xfs_extent efd_extents[]; /* array of extents freed */ 678 }; 679 680 static inline size_t 681 xfs_efd_log_format_sizeof( 682 unsigned int nr) 683 { 684 return sizeof(struct xfs_efd_log_format) + 685 nr * sizeof(struct xfs_extent); 686 } 687 688 struct xfs_efd_log_format_32 { 689 uint16_t efd_type; /* efd log item type */ 690 uint16_t efd_size; /* size of this item */ 691 uint32_t efd_nextents; /* # of extents freed */ 692 uint64_t efd_efi_id; /* id of corresponding efi */ 693 struct xfs_extent_32 efd_extents[]; /* array of extents freed */ 694 } __attribute__((packed)); 695 696 static inline size_t 697 xfs_efd_log_format32_sizeof( 698 unsigned int nr) 699 { 700 return sizeof(struct xfs_efd_log_format_32) + 701 nr * sizeof(struct xfs_extent_32); 702 } 703 704 struct xfs_efd_log_format_64 { 705 uint16_t efd_type; /* efd log item type */ 706 uint16_t efd_size; /* size of this item */ 707 uint32_t efd_nextents; /* # of extents freed */ 708 uint64_t efd_efi_id; /* id of corresponding efi */ 709 struct xfs_extent_64 efd_extents[]; /* array of extents freed */ 710 }; 711 712 static inline size_t 713 xfs_efd_log_format64_sizeof( 714 unsigned int nr) 715 { 716 return sizeof(struct xfs_efd_log_format_64) + 717 nr * sizeof(struct xfs_extent_64); 718 } 719 720 /* 721 * RUI/RUD (reverse mapping) log format definitions 722 */ 723 struct xfs_map_extent { 724 uint64_t me_owner; 725 uint64_t me_startblock; 726 uint64_t me_startoff; 727 uint32_t me_len; 728 uint32_t me_flags; 729 }; 730 731 /* rmap me_flags: upper bits are flags, lower byte is type code */ 732 #define XFS_RMAP_EXTENT_MAP 1 733 #define XFS_RMAP_EXTENT_MAP_SHARED 2 734 #define XFS_RMAP_EXTENT_UNMAP 3 735 #define XFS_RMAP_EXTENT_UNMAP_SHARED 4 736 #define XFS_RMAP_EXTENT_CONVERT 5 737 #define XFS_RMAP_EXTENT_CONVERT_SHARED 6 738 #define XFS_RMAP_EXTENT_ALLOC 7 739 #define XFS_RMAP_EXTENT_FREE 8 740 #define XFS_RMAP_EXTENT_TYPE_MASK 0xFF 741 742 #define XFS_RMAP_EXTENT_ATTR_FORK (1U << 31) 743 #define XFS_RMAP_EXTENT_BMBT_BLOCK (1U << 30) 744 #define XFS_RMAP_EXTENT_UNWRITTEN (1U << 29) 745 746 #define XFS_RMAP_EXTENT_FLAGS (XFS_RMAP_EXTENT_TYPE_MASK | \ 747 XFS_RMAP_EXTENT_ATTR_FORK | \ 748 XFS_RMAP_EXTENT_BMBT_BLOCK | \ 749 XFS_RMAP_EXTENT_UNWRITTEN) 750 751 /* 752 * This is the structure used to lay out an rui log item in the 753 * log. The rui_extents field is a variable size array whose 754 * size is given by rui_nextents. 755 */ 756 struct xfs_rui_log_format { 757 uint16_t rui_type; /* rui log item type */ 758 uint16_t rui_size; /* size of this item */ 759 uint32_t rui_nextents; /* # extents to free */ 760 uint64_t rui_id; /* rui identifier */ 761 struct xfs_map_extent rui_extents[]; /* array of extents to rmap */ 762 }; 763 764 static inline size_t 765 xfs_rui_log_format_sizeof( 766 unsigned int nr) 767 { 768 return sizeof(struct xfs_rui_log_format) + 769 nr * sizeof(struct xfs_map_extent); 770 } 771 772 /* 773 * This is the structure used to lay out an rud log item in the 774 * log. The rud_extents array is a variable size array whose 775 * size is given by rud_nextents; 776 */ 777 struct xfs_rud_log_format { 778 uint16_t rud_type; /* rud log item type */ 779 uint16_t rud_size; /* size of this item */ 780 uint32_t __pad; 781 uint64_t rud_rui_id; /* id of corresponding rui */ 782 }; 783 784 /* 785 * CUI/CUD (refcount update) log format definitions 786 */ 787 struct xfs_phys_extent { 788 uint64_t pe_startblock; 789 uint32_t pe_len; 790 uint32_t pe_flags; 791 }; 792 793 /* refcount pe_flags: upper bits are flags, lower byte is type code */ 794 /* Type codes are taken directly from enum xfs_refcount_intent_type. */ 795 #define XFS_REFCOUNT_EXTENT_TYPE_MASK 0xFF 796 797 #define XFS_REFCOUNT_EXTENT_FLAGS (XFS_REFCOUNT_EXTENT_TYPE_MASK) 798 799 /* 800 * This is the structure used to lay out a cui log item in the 801 * log. The cui_extents field is a variable size array whose 802 * size is given by cui_nextents. 803 */ 804 struct xfs_cui_log_format { 805 uint16_t cui_type; /* cui log item type */ 806 uint16_t cui_size; /* size of this item */ 807 uint32_t cui_nextents; /* # extents to free */ 808 uint64_t cui_id; /* cui identifier */ 809 struct xfs_phys_extent cui_extents[]; /* array of extents */ 810 }; 811 812 static inline size_t 813 xfs_cui_log_format_sizeof( 814 unsigned int nr) 815 { 816 return sizeof(struct xfs_cui_log_format) + 817 nr * sizeof(struct xfs_phys_extent); 818 } 819 820 /* 821 * This is the structure used to lay out a cud log item in the 822 * log. The cud_extents array is a variable size array whose 823 * size is given by cud_nextents; 824 */ 825 struct xfs_cud_log_format { 826 uint16_t cud_type; /* cud log item type */ 827 uint16_t cud_size; /* size of this item */ 828 uint32_t __pad; 829 uint64_t cud_cui_id; /* id of corresponding cui */ 830 }; 831 832 /* 833 * BUI/BUD (inode block mapping) log format definitions 834 */ 835 836 /* bmbt me_flags: upper bits are flags, lower byte is type code */ 837 /* Type codes are taken directly from enum xfs_bmap_intent_type. */ 838 #define XFS_BMAP_EXTENT_TYPE_MASK 0xFF 839 840 #define XFS_BMAP_EXTENT_ATTR_FORK (1U << 31) 841 #define XFS_BMAP_EXTENT_UNWRITTEN (1U << 30) 842 #define XFS_BMAP_EXTENT_REALTIME (1U << 29) 843 844 #define XFS_BMAP_EXTENT_FLAGS (XFS_BMAP_EXTENT_TYPE_MASK | \ 845 XFS_BMAP_EXTENT_ATTR_FORK | \ 846 XFS_BMAP_EXTENT_UNWRITTEN | \ 847 XFS_BMAP_EXTENT_REALTIME) 848 849 /* 850 * This is the structure used to lay out an bui log item in the 851 * log. The bui_extents field is a variable size array whose 852 * size is given by bui_nextents. 853 */ 854 struct xfs_bui_log_format { 855 uint16_t bui_type; /* bui log item type */ 856 uint16_t bui_size; /* size of this item */ 857 uint32_t bui_nextents; /* # extents to free */ 858 uint64_t bui_id; /* bui identifier */ 859 struct xfs_map_extent bui_extents[]; /* array of extents to bmap */ 860 }; 861 862 static inline size_t 863 xfs_bui_log_format_sizeof( 864 unsigned int nr) 865 { 866 return sizeof(struct xfs_bui_log_format) + 867 nr * sizeof(struct xfs_map_extent); 868 } 869 870 /* 871 * This is the structure used to lay out an bud log item in the 872 * log. The bud_extents array is a variable size array whose 873 * size is given by bud_nextents; 874 */ 875 struct xfs_bud_log_format { 876 uint16_t bud_type; /* bud log item type */ 877 uint16_t bud_size; /* size of this item */ 878 uint32_t __pad; 879 uint64_t bud_bui_id; /* id of corresponding bui */ 880 }; 881 882 /* 883 * XMI/XMD (file mapping exchange) log format definitions 884 */ 885 886 /* This is the structure used to lay out an mapping exchange log item. */ 887 struct xfs_xmi_log_format { 888 uint16_t xmi_type; /* xmi log item type */ 889 uint16_t xmi_size; /* size of this item */ 890 uint32_t __pad; /* must be zero */ 891 uint64_t xmi_id; /* xmi identifier */ 892 893 uint64_t xmi_inode1; /* inumber of first file */ 894 uint64_t xmi_inode2; /* inumber of second file */ 895 uint32_t xmi_igen1; /* generation of first file */ 896 uint32_t xmi_igen2; /* generation of second file */ 897 uint64_t xmi_startoff1; /* block offset into file1 */ 898 uint64_t xmi_startoff2; /* block offset into file2 */ 899 uint64_t xmi_blockcount; /* number of blocks */ 900 uint64_t xmi_flags; /* XFS_EXCHMAPS_* */ 901 uint64_t xmi_isize1; /* intended file1 size */ 902 uint64_t xmi_isize2; /* intended file2 size */ 903 }; 904 905 /* Exchange mappings between extended attribute forks instead of data forks. */ 906 #define XFS_EXCHMAPS_ATTR_FORK (1ULL << 0) 907 908 /* Set the file sizes when finished. */ 909 #define XFS_EXCHMAPS_SET_SIZES (1ULL << 1) 910 911 /* 912 * Exchange the mappings of the two files only if the file allocation units 913 * mapped to file1's range have been written. 914 */ 915 #define XFS_EXCHMAPS_INO1_WRITTEN (1ULL << 2) 916 917 /* Clear the reflink flag from inode1 after the operation. */ 918 #define XFS_EXCHMAPS_CLEAR_INO1_REFLINK (1ULL << 3) 919 920 /* Clear the reflink flag from inode2 after the operation. */ 921 #define XFS_EXCHMAPS_CLEAR_INO2_REFLINK (1ULL << 4) 922 923 #define XFS_EXCHMAPS_LOGGED_FLAGS (XFS_EXCHMAPS_ATTR_FORK | \ 924 XFS_EXCHMAPS_SET_SIZES | \ 925 XFS_EXCHMAPS_INO1_WRITTEN | \ 926 XFS_EXCHMAPS_CLEAR_INO1_REFLINK | \ 927 XFS_EXCHMAPS_CLEAR_INO2_REFLINK) 928 929 /* This is the structure used to lay out an mapping exchange done log item. */ 930 struct xfs_xmd_log_format { 931 uint16_t xmd_type; /* xmd log item type */ 932 uint16_t xmd_size; /* size of this item */ 933 uint32_t __pad; 934 uint64_t xmd_xmi_id; /* id of corresponding xmi */ 935 }; 936 937 /* 938 * Dquot Log format definitions. 939 * 940 * The first two fields must be the type and size fitting into 941 * 32 bits : log_recovery code assumes that. 942 */ 943 struct xfs_dq_logformat { 944 uint16_t qlf_type; /* dquot log item type */ 945 uint16_t qlf_size; /* size of this item */ 946 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */ 947 int64_t qlf_blkno; /* blkno of dquot buffer */ 948 int32_t qlf_len; /* len of dquot buffer */ 949 uint32_t qlf_boffset; /* off of dquot in buffer */ 950 }; 951 952 /* 953 * log format struct for QUOTAOFF records. 954 * The first two fields must be the type and size fitting into 955 * 32 bits : log_recovery code assumes that. 956 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer 957 * to the first and ensures that the first logitem is taken out of the AIL 958 * only when the last one is securely committed. 959 */ 960 struct xfs_qoff_logformat { 961 unsigned short qf_type; /* quotaoff log item type */ 962 unsigned short qf_size; /* size of this item */ 963 unsigned int qf_flags; /* USR and/or GRP */ 964 char qf_pad[12]; /* padding for future */ 965 }; 966 967 /* 968 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits. 969 */ 970 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */ 971 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */ 972 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */ 973 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */ 974 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ 975 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ 976 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ 977 978 /* 979 * Conversion to and from the combined OQUOTA flag (if necessary) 980 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk() 981 */ 982 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */ 983 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */ 984 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */ 985 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */ 986 987 #define XFS_ALL_QUOTA_ACCT \ 988 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) 989 #define XFS_ALL_QUOTA_ENFD \ 990 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD) 991 #define XFS_ALL_QUOTA_CHKD \ 992 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD) 993 994 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ 995 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ 996 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\ 997 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\ 998 XFS_PQUOTA_CHKD) 999 1000 /* 1001 * Inode create log item structure 1002 * 1003 * Log recovery assumes the first two entries are the type and size and they fit 1004 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so 1005 * decoding can be done correctly. 1006 */ 1007 struct xfs_icreate_log { 1008 uint16_t icl_type; /* type of log format structure */ 1009 uint16_t icl_size; /* size of log format structure */ 1010 __be32 icl_ag; /* ag being allocated in */ 1011 __be32 icl_agbno; /* start block of inode range */ 1012 __be32 icl_count; /* number of inodes to initialise */ 1013 __be32 icl_isize; /* size of inodes */ 1014 __be32 icl_length; /* length of extent to initialise */ 1015 __be32 icl_gen; /* inode generation number to use */ 1016 }; 1017 1018 /* 1019 * Flags for deferred attribute operations. 1020 * Upper bits are flags, lower byte is type code 1021 */ 1022 #define XFS_ATTRI_OP_FLAGS_SET 1 /* Set the attribute */ 1023 #define XFS_ATTRI_OP_FLAGS_REMOVE 2 /* Remove the attribute */ 1024 #define XFS_ATTRI_OP_FLAGS_REPLACE 3 /* Replace the attribute */ 1025 #define XFS_ATTRI_OP_FLAGS_PPTR_SET 4 /* Set parent pointer */ 1026 #define XFS_ATTRI_OP_FLAGS_PPTR_REMOVE 5 /* Remove parent pointer */ 1027 #define XFS_ATTRI_OP_FLAGS_PPTR_REPLACE 6 /* Replace parent pointer */ 1028 #define XFS_ATTRI_OP_FLAGS_TYPE_MASK 0xFF /* Flags type mask */ 1029 1030 /* 1031 * alfi_attr_filter captures the state of xfs_da_args.attr_filter, so it should 1032 * never have any other bits set. 1033 */ 1034 #define XFS_ATTRI_FILTER_MASK (XFS_ATTR_ROOT | \ 1035 XFS_ATTR_SECURE | \ 1036 XFS_ATTR_PARENT | \ 1037 XFS_ATTR_INCOMPLETE) 1038 1039 /* 1040 * This is the structure used to lay out an attr log item in the 1041 * log. 1042 */ 1043 struct xfs_attri_log_format { 1044 uint16_t alfi_type; /* attri log item type */ 1045 uint16_t alfi_size; /* size of this item */ 1046 uint32_t alfi_igen; /* generation of alfi_ino for pptr ops */ 1047 uint64_t alfi_id; /* attri identifier */ 1048 uint64_t alfi_ino; /* the inode for this attr operation */ 1049 uint32_t alfi_op_flags; /* marks the op as a set or remove */ 1050 union { 1051 uint32_t alfi_name_len; /* attr name length */ 1052 struct { 1053 /* 1054 * For PPTR_REPLACE, these are the lengths of the old 1055 * and new attr names. The new and old values must 1056 * have the same length. 1057 */ 1058 uint16_t alfi_old_name_len; 1059 uint16_t alfi_new_name_len; 1060 }; 1061 }; 1062 uint32_t alfi_value_len; /* attr value length */ 1063 uint32_t alfi_attr_filter;/* attr filter flags */ 1064 }; 1065 1066 struct xfs_attrd_log_format { 1067 uint16_t alfd_type; /* attrd log item type */ 1068 uint16_t alfd_size; /* size of this item */ 1069 uint32_t __pad; /* pad to 64 bit aligned */ 1070 uint64_t alfd_alf_id; /* id of corresponding attri */ 1071 }; 1072 1073 #endif /* __XFS_LOG_FORMAT_H__ */ 1074