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_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */ 35 #define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */ 36 #define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */ 37 38 #define XLOG_HEADER_SIZE 512 39 40 /* Minimum number of transactions that must fit in the log (defined by mkfs) */ 41 #define XFS_MIN_LOG_FACTOR 3 42 43 #define XLOG_REC_SHIFT(log) \ 44 BTOBB(1 << (xfs_has_logv2(log->l_mp) ? \ 45 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) 46 #define XLOG_TOTAL_REC_SHIFT(log) \ 47 BTOBB(XLOG_MAX_ICLOGS << (xfs_has_logv2(log->l_mp) ? \ 48 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) 49 50 /* get lsn fields */ 51 #define CYCLE_LSN(lsn) ((uint)((lsn)>>32)) 52 #define BLOCK_LSN(lsn) ((uint)(lsn)) 53 54 /* this is used in a spot where we might otherwise double-endian-flip */ 55 #define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0]) 56 57 static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block) 58 { 59 return ((xfs_lsn_t)cycle << 32) | block; 60 } 61 62 static inline uint xlog_get_cycle(char *ptr) 63 { 64 if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM) 65 return be32_to_cpu(*((__be32 *)ptr + 1)); 66 else 67 return be32_to_cpu(*(__be32 *)ptr); 68 } 69 70 /* Log Clients */ 71 #define XFS_TRANSACTION 0x69 72 #define XFS_LOG 0xaa 73 74 #define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */ 75 76 /* 77 * Log item for unmount records. 78 * 79 * The unmount record used to have a string "Unmount filesystem--" in the 80 * data section where the "Un" was really a magic number (XLOG_UNMOUNT_TYPE). 81 * We just write the magic number now; see xfs_log_unmount_write. 82 */ 83 struct xfs_unmount_log_format { 84 uint16_t magic; /* XLOG_UNMOUNT_TYPE */ 85 uint16_t pad1; 86 uint32_t pad2; /* may as well make it 64 bits */ 87 }; 88 89 /* 90 * Flags to log operation header 91 * 92 * The first write of a new transaction will be preceded with a start 93 * record, XLOG_START_TRANS. Once a transaction is committed, a commit 94 * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into 95 * the remainder of the current active in-core log, it is split up into 96 * multiple regions. Each partial region will be marked with a 97 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS. 98 * 99 */ 100 #define XLOG_START_TRANS 0x01 /* Start a new transaction */ 101 #define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */ 102 #define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */ 103 #define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */ 104 #define XLOG_END_TRANS 0x10 /* End a continued transaction */ 105 #define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */ 106 107 struct xlog_op_header { 108 __be32 oh_tid; /* transaction id of operation : 4 b */ 109 __be32 oh_len; /* bytes in data region : 4 b */ 110 __u8 oh_clientid; /* who sent me this : 1 b */ 111 __u8 oh_flags; /* : 1 b */ 112 __u16 oh_res2; /* 32 bit align : 2 b */ 113 }; 114 115 /* valid values for h_fmt */ 116 #define XLOG_FMT_UNKNOWN 0 117 #define XLOG_FMT_LINUX_LE 1 118 #define XLOG_FMT_LINUX_BE 2 119 #define XLOG_FMT_IRIX_BE 3 120 121 /* our fmt */ 122 #ifdef XFS_NATIVE_HOST 123 #define XLOG_FMT XLOG_FMT_LINUX_BE 124 #else 125 #define XLOG_FMT XLOG_FMT_LINUX_LE 126 #endif 127 128 typedef struct xlog_rec_header { 129 __be32 h_magicno; /* log record (LR) identifier : 4 */ 130 __be32 h_cycle; /* write cycle of log : 4 */ 131 __be32 h_version; /* LR version : 4 */ 132 __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */ 133 __be64 h_lsn; /* lsn of this LR : 8 */ 134 __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */ 135 __le32 h_crc; /* crc of log record : 4 */ 136 __be32 h_prev_block; /* block number to previous LR : 4 */ 137 __be32 h_num_logops; /* number of log operations in this LR : 4 */ 138 __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; 139 140 /* fields added by the Linux port: */ 141 __be32 h_fmt; /* format of log record : 4 */ 142 uuid_t h_fs_uuid; /* uuid of FS : 16 */ 143 144 /* fields added for log v2: */ 145 __be32 h_size; /* iclog size : 4 */ 146 147 /* 148 * When h_size added for log v2 support, it caused structure to have 149 * a different size on i386 vs all other architectures because the 150 * sum of the size ofthe member is not aligned by that of the largest 151 * __be64-sized member, and i386 has really odd struct alignment rules. 152 * 153 * Due to the way the log headers are placed out on-disk that alone is 154 * not a problem becaue the xlog_rec_header always sits alone in a 155 * BBSIZEs area, and the rest of that area is padded with zeroes. 156 * But xlog_cksum used to calculate the checksum based on the structure 157 * size, and thus gives different checksums for i386 vs the rest. 158 * We now do two checksum validation passes for both sizes to allow 159 * moving v5 file systems with unclean logs between i386 and other 160 * (little-endian) architectures. 161 */ 162 __u32 h_pad0; 163 } xlog_rec_header_t; 164 165 #ifdef __i386__ 166 #define XLOG_REC_SIZE offsetofend(struct xlog_rec_header, h_size) 167 #define XLOG_REC_SIZE_OTHER sizeof(struct xlog_rec_header) 168 #else 169 #define XLOG_REC_SIZE sizeof(struct xlog_rec_header) 170 #define XLOG_REC_SIZE_OTHER offsetofend(struct xlog_rec_header, h_size) 171 #endif /* __i386__ */ 172 173 typedef struct xlog_rec_ext_header { 174 __be32 xh_cycle; /* write cycle of log : 4 */ 175 __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */ 176 } xlog_rec_ext_header_t; 177 178 /* 179 * Quite misnamed, because this union lays out the actual on-disk log buffer. 180 */ 181 typedef union xlog_in_core2 { 182 xlog_rec_header_t hic_header; 183 xlog_rec_ext_header_t hic_xheader; 184 char hic_sector[XLOG_HEADER_SIZE]; 185 } xlog_in_core_2_t; 186 187 /* not an on-disk structure, but needed by log recovery in userspace */ 188 struct xfs_log_iovec { 189 void *i_addr; /* beginning address of region */ 190 int i_len; /* length in bytes of region */ 191 uint i_type; /* type of region */ 192 }; 193 194 /* 195 * Transaction Header definitions. 196 * 197 * This is the structure written in the log at the head of every transaction. It 198 * identifies the type and id of the transaction, and contains the number of 199 * items logged by the transaction so we know how many to expect during 200 * recovery. 201 * 202 * Do not change the below structure without redoing the code in 203 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans(). 204 */ 205 struct xfs_trans_header { 206 uint th_magic; /* magic number */ 207 uint th_type; /* transaction type */ 208 int32_t th_tid; /* transaction id (unused) */ 209 uint th_num_items; /* num items logged by trans */ 210 }; 211 212 #define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */ 213 214 /* 215 * The only type valid for th_type in CIL-enabled file system logs: 216 */ 217 #define XFS_TRANS_CHECKPOINT 40 218 219 /* 220 * Log item types. 221 */ 222 #define XFS_LI_EFI 0x1236 223 #define XFS_LI_EFD 0x1237 224 #define XFS_LI_IUNLINK 0x1238 225 #define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */ 226 #define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */ 227 #define XFS_LI_DQUOT 0x123d 228 #define XFS_LI_QUOTAOFF 0x123e 229 #define XFS_LI_ICREATE 0x123f 230 #define XFS_LI_RUI 0x1240 /* rmap update intent */ 231 #define XFS_LI_RUD 0x1241 232 #define XFS_LI_CUI 0x1242 /* refcount update intent */ 233 #define XFS_LI_CUD 0x1243 234 #define XFS_LI_BUI 0x1244 /* bmbt update intent */ 235 #define XFS_LI_BUD 0x1245 236 #define XFS_LI_ATTRI 0x1246 /* attr set/remove intent*/ 237 #define XFS_LI_ATTRD 0x1247 /* attr set/remove done */ 238 #define XFS_LI_XMI 0x1248 /* mapping exchange intent */ 239 #define XFS_LI_XMD 0x1249 /* mapping exchange done */ 240 #define XFS_LI_EFI_RT 0x124a /* realtime extent free intent */ 241 #define XFS_LI_EFD_RT 0x124b /* realtime extent free done */ 242 #define XFS_LI_RUI_RT 0x124c /* realtime rmap update intent */ 243 #define XFS_LI_RUD_RT 0x124d /* realtime rmap update done */ 244 #define XFS_LI_CUI_RT 0x124e /* realtime refcount update intent */ 245 #define XFS_LI_CUD_RT 0x124f /* realtime refcount update done */ 246 247 #define XFS_LI_TYPE_DESC \ 248 { XFS_LI_EFI, "XFS_LI_EFI" }, \ 249 { XFS_LI_EFD, "XFS_LI_EFD" }, \ 250 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \ 251 { XFS_LI_INODE, "XFS_LI_INODE" }, \ 252 { XFS_LI_BUF, "XFS_LI_BUF" }, \ 253 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \ 254 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \ 255 { XFS_LI_ICREATE, "XFS_LI_ICREATE" }, \ 256 { XFS_LI_RUI, "XFS_LI_RUI" }, \ 257 { XFS_LI_RUD, "XFS_LI_RUD" }, \ 258 { XFS_LI_CUI, "XFS_LI_CUI" }, \ 259 { XFS_LI_CUD, "XFS_LI_CUD" }, \ 260 { XFS_LI_BUI, "XFS_LI_BUI" }, \ 261 { XFS_LI_BUD, "XFS_LI_BUD" }, \ 262 { XFS_LI_ATTRI, "XFS_LI_ATTRI" }, \ 263 { XFS_LI_ATTRD, "XFS_LI_ATTRD" }, \ 264 { XFS_LI_XMI, "XFS_LI_XMI" }, \ 265 { XFS_LI_XMD, "XFS_LI_XMD" }, \ 266 { XFS_LI_EFI_RT, "XFS_LI_EFI_RT" }, \ 267 { XFS_LI_EFD_RT, "XFS_LI_EFD_RT" }, \ 268 { XFS_LI_RUI_RT, "XFS_LI_RUI_RT" }, \ 269 { XFS_LI_RUD_RT, "XFS_LI_RUD_RT" }, \ 270 { XFS_LI_CUI_RT, "XFS_LI_CUI_RT" }, \ 271 { XFS_LI_CUD_RT, "XFS_LI_CUD_RT" } 272 273 /* 274 * Inode Log Item Format definitions. 275 * 276 * This is the structure used to lay out an inode log item in the 277 * log. The size of the inline data/extents/b-tree root to be logged 278 * (if any) is indicated in the ilf_dsize field. Changes to this structure 279 * must be added on to the end. 280 */ 281 struct xfs_inode_log_format { 282 uint16_t ilf_type; /* inode log item type */ 283 uint16_t ilf_size; /* size of this item */ 284 uint32_t ilf_fields; /* flags for fields logged */ 285 uint16_t ilf_asize; /* size of attr d/ext/root */ 286 uint16_t ilf_dsize; /* size of data/ext/root */ 287 uint32_t ilf_pad; /* pad for 64 bit boundary */ 288 uint64_t ilf_ino; /* inode number */ 289 union { 290 uint32_t ilfu_rdev; /* rdev value for dev inode*/ 291 uint8_t __pad[16]; /* unused */ 292 } ilf_u; 293 int64_t ilf_blkno; /* blkno of inode buffer */ 294 int32_t ilf_len; /* len of inode buffer */ 295 int32_t ilf_boffset; /* off of inode in buffer */ 296 }; 297 298 /* 299 * Old 32 bit systems will log in this format without the 64 bit 300 * alignment padding. Recovery will detect this and convert it to the 301 * correct format. 302 */ 303 struct xfs_inode_log_format_32 { 304 uint16_t ilf_type; /* inode log item type */ 305 uint16_t ilf_size; /* size of this item */ 306 uint32_t ilf_fields; /* flags for fields logged */ 307 uint16_t ilf_asize; /* size of attr d/ext/root */ 308 uint16_t ilf_dsize; /* size of data/ext/root */ 309 uint64_t ilf_ino; /* inode number */ 310 union { 311 uint32_t ilfu_rdev; /* rdev value for dev inode*/ 312 uint8_t __pad[16]; /* unused */ 313 } ilf_u; 314 int64_t ilf_blkno; /* blkno of inode buffer */ 315 int32_t ilf_len; /* len of inode buffer */ 316 int32_t ilf_boffset; /* off of inode in buffer */ 317 } __attribute__((packed)); 318 319 320 /* 321 * Flags for xfs_trans_log_inode flags field. 322 */ 323 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */ 324 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ 325 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ 326 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ 327 #define XFS_ILOG_DEV 0x010 /* log the dev field */ 328 #define XFS_ILOG_UUID 0x020 /* added long ago, but never used */ 329 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ 330 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ 331 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ 332 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */ 333 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */ 334 335 /* 336 * The timestamps are dirty, but not necessarily anything else in the inode 337 * core. Unlike the other fields above this one must never make it to disk 338 * in the ilf_fields of the inode_log_format, but is purely store in-memory in 339 * ili_fields in the inode_log_item. 340 */ 341 #define XFS_ILOG_TIMESTAMP 0x4000 342 343 /* 344 * The version field has been changed, but not necessarily anything else of 345 * interest. This must never make it to disk - it is used purely to ensure that 346 * the inode item ->precommit operation can update the fsync flag triggers 347 * in the inode item correctly. 348 */ 349 #define XFS_ILOG_IVERSION 0x8000 350 351 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 352 XFS_ILOG_DBROOT) 353 354 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 355 XFS_ILOG_ABROOT) 356 357 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \ 358 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \ 359 XFS_ILOG_DEV | XFS_ILOG_ADATA | \ 360 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \ 361 XFS_ILOG_TIMESTAMP | XFS_ILOG_DOWNER | \ 362 XFS_ILOG_AOWNER) 363 364 static inline int xfs_ilog_fbroot(int w) 365 { 366 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT); 367 } 368 369 static inline int xfs_ilog_fext(int w) 370 { 371 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT); 372 } 373 374 static inline int xfs_ilog_fdata(int w) 375 { 376 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA); 377 } 378 379 /* 380 * Incore version of the on-disk inode core structures. We log this directly 381 * into the journal in host CPU format (for better or worse) and as such 382 * directly mirrors the xfs_dinode structure as it must contain all the same 383 * information. 384 */ 385 typedef uint64_t xfs_log_timestamp_t; 386 387 /* Legacy timestamp encoding format. */ 388 struct xfs_log_legacy_timestamp { 389 int32_t t_sec; /* timestamp seconds */ 390 int32_t t_nsec; /* timestamp nanoseconds */ 391 }; 392 393 /* 394 * Define the format of the inode core that is logged. This structure must be 395 * kept identical to struct xfs_dinode except for the endianness annotations. 396 */ 397 struct xfs_log_dinode { 398 uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 399 uint16_t di_mode; /* mode and type of file */ 400 int8_t di_version; /* inode version */ 401 int8_t di_format; /* format of di_c data */ 402 uint16_t di_metatype; /* metadata type, if DIFLAG2_METADATA */ 403 uint32_t di_uid; /* owner's user id */ 404 uint32_t di_gid; /* owner's group id */ 405 uint32_t di_nlink; /* number of links to file */ 406 uint16_t di_projid_lo; /* lower part of owner's project id */ 407 uint16_t di_projid_hi; /* higher part of owner's project id */ 408 union { 409 /* Number of data fork extents if NREXT64 is set */ 410 uint64_t di_big_nextents; 411 412 /* Padding for V3 inodes without NREXT64 set. */ 413 uint64_t di_v3_pad; 414 415 /* Padding and inode flush counter for V2 inodes. */ 416 struct { 417 uint8_t di_v2_pad[6]; /* V2 inode zeroed space */ 418 uint16_t di_flushiter; /* V2 inode incremented on flush */ 419 }; 420 }; 421 xfs_log_timestamp_t di_atime; /* time last accessed */ 422 xfs_log_timestamp_t di_mtime; /* time last modified */ 423 xfs_log_timestamp_t di_ctime; /* time created/inode modified */ 424 xfs_fsize_t di_size; /* number of bytes in file */ 425 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */ 426 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 427 union { 428 /* 429 * For V2 inodes and V3 inodes without NREXT64 set, this 430 * is the number of data and attr fork extents. 431 */ 432 struct { 433 uint32_t di_nextents; 434 uint16_t di_anextents; 435 } __packed; 436 437 /* Number of attr fork extents if NREXT64 is set. */ 438 struct { 439 uint32_t di_big_anextents; 440 uint16_t di_nrext64_pad; 441 } __packed; 442 } __packed; 443 uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 444 int8_t di_aformat; /* format of attr fork's data */ 445 uint32_t di_dmevmask; /* DMIG event mask */ 446 uint16_t di_dmstate; /* DMIG state info */ 447 uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 448 uint32_t di_gen; /* generation number */ 449 450 /* di_next_unlinked is the only non-core field in the old dinode */ 451 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ 452 453 /* start of the extended dinode, writable fields */ 454 uint32_t di_crc; /* CRC of the inode */ 455 uint64_t di_changecount; /* number of attribute changes */ 456 457 /* 458 * The LSN we write to this field during formatting is not a reflection 459 * of the current on-disk LSN. It should never be used for recovery 460 * sequencing, nor should it be recovered into the on-disk inode at all. 461 * See xlog_recover_inode_commit_pass2() and xfs_log_dinode_to_disk() 462 * for details. 463 */ 464 xfs_lsn_t di_lsn; 465 466 uint64_t di_flags2; /* more random flags */ 467 union { 468 /* basic cow extent size for (regular) file */ 469 uint32_t di_cowextsize; 470 /* used blocks in RTG for (zoned) rtrmap inode */ 471 uint32_t di_used_blocks; 472 }; 473 uint8_t di_pad2[12]; /* more padding for future expansion */ 474 475 /* fields only written to during inode creation */ 476 xfs_log_timestamp_t di_crtime; /* time created */ 477 xfs_ino_t di_ino; /* inode number */ 478 uuid_t di_uuid; /* UUID of the filesystem */ 479 480 /* structure must be padded to 64 bit alignment */ 481 }; 482 483 #define xfs_log_dinode_size(mp) \ 484 (xfs_has_v3inodes((mp)) ? \ 485 sizeof(struct xfs_log_dinode) : \ 486 offsetof(struct xfs_log_dinode, di_next_unlinked)) 487 488 /* 489 * Buffer Log Format definitions 490 * 491 * These are the physical dirty bitmap definitions for the log format structure. 492 */ 493 #define XFS_BLF_CHUNK 128 494 #define XFS_BLF_SHIFT 7 495 #define BIT_TO_WORD_SHIFT 5 496 #define NBWORD (NBBY * sizeof(unsigned int)) 497 498 /* 499 * This flag indicates that the buffer contains on disk inodes 500 * and requires special recovery handling. 501 */ 502 #define XFS_BLF_INODE_BUF (1<<0) 503 504 /* 505 * This flag indicates that the buffer should not be replayed 506 * during recovery because its blocks are being freed. 507 */ 508 #define XFS_BLF_CANCEL (1<<1) 509 510 /* 511 * This flag indicates that the buffer contains on disk 512 * user or group dquots and may require special recovery handling. 513 */ 514 #define XFS_BLF_UDQUOT_BUF (1<<2) 515 #define XFS_BLF_PDQUOT_BUF (1<<3) 516 #define XFS_BLF_GDQUOT_BUF (1<<4) 517 518 /* 519 * This is the structure used to lay out a buf log item in the log. The data 520 * map describes which 128 byte chunks of the buffer have been logged. 521 * 522 * The placement of blf_map_size causes blf_data_map to start at an odd 523 * multiple of sizeof(unsigned int) offset within the struct. Because the data 524 * bitmap size will always be an even number, the end of the data_map (and 525 * therefore the structure) will also be at an odd multiple of sizeof(unsigned 526 * int). Some 64-bit compilers will insert padding at the end of the struct to 527 * ensure 64-bit alignment of blf_blkno, but 32-bit ones will not. Therefore, 528 * XFS_BLF_DATAMAP_SIZE must be an odd number to make the padding explicit and 529 * keep the structure size consistent between 32-bit and 64-bit platforms. 530 */ 531 #define __XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) 532 #define XFS_BLF_DATAMAP_SIZE (__XFS_BLF_DATAMAP_SIZE + 1) 533 534 struct xfs_buf_log_format { 535 unsigned short blf_type; /* buf log item type indicator */ 536 unsigned short blf_size; /* size of this item */ 537 unsigned short blf_flags; /* misc state */ 538 unsigned short blf_len; /* number of blocks in this buf */ 539 int64_t blf_blkno; /* starting blkno of this buf */ 540 unsigned int blf_map_size; /* used size of data bitmap in words */ 541 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */ 542 }; 543 544 /* 545 * All buffers now need to tell recovery where the magic number 546 * is so that it can verify and calculate the CRCs on the buffer correctly 547 * once the changes have been replayed into the buffer. 548 * 549 * The type value is held in the upper 5 bits of the blf_flags field, which is 550 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down. 551 */ 552 #define XFS_BLFT_BITS 5 553 #define XFS_BLFT_SHIFT 11 554 #define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT) 555 556 enum xfs_blft { 557 XFS_BLFT_UNKNOWN_BUF = 0, 558 XFS_BLFT_UDQUOT_BUF, 559 XFS_BLFT_PDQUOT_BUF, 560 XFS_BLFT_GDQUOT_BUF, 561 XFS_BLFT_BTREE_BUF, 562 XFS_BLFT_AGF_BUF, 563 XFS_BLFT_AGFL_BUF, 564 XFS_BLFT_AGI_BUF, 565 XFS_BLFT_DINO_BUF, 566 XFS_BLFT_SYMLINK_BUF, 567 XFS_BLFT_DIR_BLOCK_BUF, 568 XFS_BLFT_DIR_DATA_BUF, 569 XFS_BLFT_DIR_FREE_BUF, 570 XFS_BLFT_DIR_LEAF1_BUF, 571 XFS_BLFT_DIR_LEAFN_BUF, 572 XFS_BLFT_DA_NODE_BUF, 573 XFS_BLFT_ATTR_LEAF_BUF, 574 XFS_BLFT_ATTR_RMT_BUF, 575 XFS_BLFT_SB_BUF, 576 XFS_BLFT_RTBITMAP_BUF, 577 XFS_BLFT_RTSUMMARY_BUF, 578 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS), 579 }; 580 581 static inline void 582 xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type) 583 { 584 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF); 585 blf->blf_flags &= ~XFS_BLFT_MASK; 586 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK); 587 } 588 589 static inline uint16_t 590 xfs_blft_from_flags(struct xfs_buf_log_format *blf) 591 { 592 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; 593 } 594 595 /* 596 * EFI/EFD log format definitions 597 */ 598 struct xfs_extent { 599 xfs_fsblock_t ext_start; 600 xfs_extlen_t ext_len; 601 }; 602 603 /* 604 * Since the structures in struct xfs_extent add up to 96 bytes, it has 605 * different alignments on i386 vs all other architectures, because i386 606 * does not pad structures to their natural alignment. 607 * 608 * Provide the different variants for use by a conversion routine. 609 */ 610 struct xfs_extent_32 { 611 uint64_t ext_start; 612 uint32_t ext_len; 613 } __attribute__((packed)); 614 615 struct xfs_extent_64 { 616 uint64_t ext_start; 617 uint32_t ext_len; 618 uint32_t ext_pad; 619 }; 620 621 /* 622 * This is the structure used to lay out an efi log item in the 623 * log. The efi_extents field is a variable size array whose 624 * size is given by efi_nextents. 625 */ 626 struct xfs_efi_log_format { 627 uint16_t efi_type; /* efi log item type */ 628 uint16_t efi_size; /* size of this item */ 629 uint32_t efi_nextents; /* # extents to free */ 630 uint64_t efi_id; /* efi identifier */ 631 struct xfs_extent efi_extents[]; /* array of extents to free */ 632 }; 633 634 static inline size_t 635 xfs_efi_log_format_sizeof( 636 unsigned int nr) 637 { 638 return sizeof(struct xfs_efi_log_format) + 639 nr * sizeof(struct xfs_extent); 640 } 641 642 struct xfs_efi_log_format_32 { 643 uint16_t efi_type; /* efi log item type */ 644 uint16_t efi_size; /* size of this item */ 645 uint32_t efi_nextents; /* # extents to free */ 646 uint64_t efi_id; /* efi identifier */ 647 struct xfs_extent_32 efi_extents[]; /* array of extents to free */ 648 } __attribute__((packed)); 649 650 static inline size_t 651 xfs_efi_log_format32_sizeof( 652 unsigned int nr) 653 { 654 return sizeof(struct xfs_efi_log_format_32) + 655 nr * sizeof(struct xfs_extent_32); 656 } 657 658 struct xfs_efi_log_format_64 { 659 uint16_t efi_type; /* efi log item type */ 660 uint16_t efi_size; /* size of this item */ 661 uint32_t efi_nextents; /* # extents to free */ 662 uint64_t efi_id; /* efi identifier */ 663 struct xfs_extent_64 efi_extents[]; /* array of extents to free */ 664 }; 665 666 static inline size_t 667 xfs_efi_log_format64_sizeof( 668 unsigned int nr) 669 { 670 return sizeof(struct xfs_efi_log_format_64) + 671 nr * sizeof(struct xfs_extent_64); 672 } 673 674 /* 675 * This is the structure used to lay out an efd log item in the 676 * log. The efd_extents array is a variable size array whose 677 * size is given by efd_nextents; 678 */ 679 struct xfs_efd_log_format { 680 uint16_t efd_type; /* efd log item type */ 681 uint16_t efd_size; /* size of this item */ 682 uint32_t efd_nextents; /* # of extents freed */ 683 uint64_t efd_efi_id; /* id of corresponding efi */ 684 struct xfs_extent efd_extents[]; /* array of extents freed */ 685 }; 686 687 static inline size_t 688 xfs_efd_log_format_sizeof( 689 unsigned int nr) 690 { 691 return sizeof(struct xfs_efd_log_format) + 692 nr * sizeof(struct xfs_extent); 693 } 694 695 struct xfs_efd_log_format_32 { 696 uint16_t efd_type; /* efd log item type */ 697 uint16_t efd_size; /* size of this item */ 698 uint32_t efd_nextents; /* # of extents freed */ 699 uint64_t efd_efi_id; /* id of corresponding efi */ 700 struct xfs_extent_32 efd_extents[]; /* array of extents freed */ 701 } __attribute__((packed)); 702 703 static inline size_t 704 xfs_efd_log_format32_sizeof( 705 unsigned int nr) 706 { 707 return sizeof(struct xfs_efd_log_format_32) + 708 nr * sizeof(struct xfs_extent_32); 709 } 710 711 struct xfs_efd_log_format_64 { 712 uint16_t efd_type; /* efd log item type */ 713 uint16_t efd_size; /* size of this item */ 714 uint32_t efd_nextents; /* # of extents freed */ 715 uint64_t efd_efi_id; /* id of corresponding efi */ 716 struct xfs_extent_64 efd_extents[]; /* array of extents freed */ 717 }; 718 719 static inline size_t 720 xfs_efd_log_format64_sizeof( 721 unsigned int nr) 722 { 723 return sizeof(struct xfs_efd_log_format_64) + 724 nr * sizeof(struct xfs_extent_64); 725 } 726 727 /* 728 * RUI/RUD (reverse mapping) log format definitions 729 */ 730 struct xfs_map_extent { 731 uint64_t me_owner; 732 uint64_t me_startblock; 733 uint64_t me_startoff; 734 uint32_t me_len; 735 uint32_t me_flags; 736 }; 737 738 /* rmap me_flags: upper bits are flags, lower byte is type code */ 739 #define XFS_RMAP_EXTENT_MAP 1 740 #define XFS_RMAP_EXTENT_MAP_SHARED 2 741 #define XFS_RMAP_EXTENT_UNMAP 3 742 #define XFS_RMAP_EXTENT_UNMAP_SHARED 4 743 #define XFS_RMAP_EXTENT_CONVERT 5 744 #define XFS_RMAP_EXTENT_CONVERT_SHARED 6 745 #define XFS_RMAP_EXTENT_ALLOC 7 746 #define XFS_RMAP_EXTENT_FREE 8 747 #define XFS_RMAP_EXTENT_TYPE_MASK 0xFF 748 749 #define XFS_RMAP_EXTENT_ATTR_FORK (1U << 31) 750 #define XFS_RMAP_EXTENT_BMBT_BLOCK (1U << 30) 751 #define XFS_RMAP_EXTENT_UNWRITTEN (1U << 29) 752 753 #define XFS_RMAP_EXTENT_FLAGS (XFS_RMAP_EXTENT_TYPE_MASK | \ 754 XFS_RMAP_EXTENT_ATTR_FORK | \ 755 XFS_RMAP_EXTENT_BMBT_BLOCK | \ 756 XFS_RMAP_EXTENT_UNWRITTEN) 757 758 /* 759 * This is the structure used to lay out an rui log item in the 760 * log. The rui_extents field is a variable size array whose 761 * size is given by rui_nextents. 762 */ 763 struct xfs_rui_log_format { 764 uint16_t rui_type; /* rui log item type */ 765 uint16_t rui_size; /* size of this item */ 766 uint32_t rui_nextents; /* # extents to free */ 767 uint64_t rui_id; /* rui identifier */ 768 struct xfs_map_extent rui_extents[]; /* array of extents to rmap */ 769 }; 770 771 static inline size_t 772 xfs_rui_log_format_sizeof( 773 unsigned int nr) 774 { 775 return sizeof(struct xfs_rui_log_format) + 776 nr * sizeof(struct xfs_map_extent); 777 } 778 779 /* 780 * This is the structure used to lay out an rud log item in the 781 * log. The rud_extents array is a variable size array whose 782 * size is given by rud_nextents; 783 */ 784 struct xfs_rud_log_format { 785 uint16_t rud_type; /* rud log item type */ 786 uint16_t rud_size; /* size of this item */ 787 uint32_t __pad; 788 uint64_t rud_rui_id; /* id of corresponding rui */ 789 }; 790 791 /* 792 * CUI/CUD (refcount update) log format definitions 793 */ 794 struct xfs_phys_extent { 795 uint64_t pe_startblock; 796 uint32_t pe_len; 797 uint32_t pe_flags; 798 }; 799 800 /* refcount pe_flags: upper bits are flags, lower byte is type code */ 801 /* Type codes are taken directly from enum xfs_refcount_intent_type. */ 802 #define XFS_REFCOUNT_EXTENT_TYPE_MASK 0xFF 803 804 #define XFS_REFCOUNT_EXTENT_FLAGS (XFS_REFCOUNT_EXTENT_TYPE_MASK) 805 806 /* 807 * This is the structure used to lay out a cui log item in the 808 * log. The cui_extents field is a variable size array whose 809 * size is given by cui_nextents. 810 */ 811 struct xfs_cui_log_format { 812 uint16_t cui_type; /* cui log item type */ 813 uint16_t cui_size; /* size of this item */ 814 uint32_t cui_nextents; /* # extents to free */ 815 uint64_t cui_id; /* cui identifier */ 816 struct xfs_phys_extent cui_extents[]; /* array of extents */ 817 }; 818 819 static inline size_t 820 xfs_cui_log_format_sizeof( 821 unsigned int nr) 822 { 823 return sizeof(struct xfs_cui_log_format) + 824 nr * sizeof(struct xfs_phys_extent); 825 } 826 827 /* 828 * This is the structure used to lay out a cud log item in the 829 * log. The cud_extents array is a variable size array whose 830 * size is given by cud_nextents; 831 */ 832 struct xfs_cud_log_format { 833 uint16_t cud_type; /* cud log item type */ 834 uint16_t cud_size; /* size of this item */ 835 uint32_t __pad; 836 uint64_t cud_cui_id; /* id of corresponding cui */ 837 }; 838 839 /* 840 * BUI/BUD (inode block mapping) log format definitions 841 */ 842 843 /* bmbt me_flags: upper bits are flags, lower byte is type code */ 844 /* Type codes are taken directly from enum xfs_bmap_intent_type. */ 845 #define XFS_BMAP_EXTENT_TYPE_MASK 0xFF 846 847 #define XFS_BMAP_EXTENT_ATTR_FORK (1U << 31) 848 #define XFS_BMAP_EXTENT_UNWRITTEN (1U << 30) 849 #define XFS_BMAP_EXTENT_REALTIME (1U << 29) 850 851 #define XFS_BMAP_EXTENT_FLAGS (XFS_BMAP_EXTENT_TYPE_MASK | \ 852 XFS_BMAP_EXTENT_ATTR_FORK | \ 853 XFS_BMAP_EXTENT_UNWRITTEN | \ 854 XFS_BMAP_EXTENT_REALTIME) 855 856 /* 857 * This is the structure used to lay out an bui log item in the 858 * log. The bui_extents field is a variable size array whose 859 * size is given by bui_nextents. 860 */ 861 struct xfs_bui_log_format { 862 uint16_t bui_type; /* bui log item type */ 863 uint16_t bui_size; /* size of this item */ 864 uint32_t bui_nextents; /* # extents to free */ 865 uint64_t bui_id; /* bui identifier */ 866 struct xfs_map_extent bui_extents[]; /* array of extents to bmap */ 867 }; 868 869 static inline size_t 870 xfs_bui_log_format_sizeof( 871 unsigned int nr) 872 { 873 return sizeof(struct xfs_bui_log_format) + 874 nr * sizeof(struct xfs_map_extent); 875 } 876 877 /* 878 * This is the structure used to lay out an bud log item in the 879 * log. The bud_extents array is a variable size array whose 880 * size is given by bud_nextents; 881 */ 882 struct xfs_bud_log_format { 883 uint16_t bud_type; /* bud log item type */ 884 uint16_t bud_size; /* size of this item */ 885 uint32_t __pad; 886 uint64_t bud_bui_id; /* id of corresponding bui */ 887 }; 888 889 /* 890 * XMI/XMD (file mapping exchange) log format definitions 891 */ 892 893 /* This is the structure used to lay out an mapping exchange log item. */ 894 struct xfs_xmi_log_format { 895 uint16_t xmi_type; /* xmi log item type */ 896 uint16_t xmi_size; /* size of this item */ 897 uint32_t __pad; /* must be zero */ 898 uint64_t xmi_id; /* xmi identifier */ 899 900 uint64_t xmi_inode1; /* inumber of first file */ 901 uint64_t xmi_inode2; /* inumber of second file */ 902 uint32_t xmi_igen1; /* generation of first file */ 903 uint32_t xmi_igen2; /* generation of second file */ 904 uint64_t xmi_startoff1; /* block offset into file1 */ 905 uint64_t xmi_startoff2; /* block offset into file2 */ 906 uint64_t xmi_blockcount; /* number of blocks */ 907 uint64_t xmi_flags; /* XFS_EXCHMAPS_* */ 908 uint64_t xmi_isize1; /* intended file1 size */ 909 uint64_t xmi_isize2; /* intended file2 size */ 910 }; 911 912 /* Exchange mappings between extended attribute forks instead of data forks. */ 913 #define XFS_EXCHMAPS_ATTR_FORK (1ULL << 0) 914 915 /* Set the file sizes when finished. */ 916 #define XFS_EXCHMAPS_SET_SIZES (1ULL << 1) 917 918 /* 919 * Exchange the mappings of the two files only if the file allocation units 920 * mapped to file1's range have been written. 921 */ 922 #define XFS_EXCHMAPS_INO1_WRITTEN (1ULL << 2) 923 924 /* Clear the reflink flag from inode1 after the operation. */ 925 #define XFS_EXCHMAPS_CLEAR_INO1_REFLINK (1ULL << 3) 926 927 /* Clear the reflink flag from inode2 after the operation. */ 928 #define XFS_EXCHMAPS_CLEAR_INO2_REFLINK (1ULL << 4) 929 930 #define XFS_EXCHMAPS_LOGGED_FLAGS (XFS_EXCHMAPS_ATTR_FORK | \ 931 XFS_EXCHMAPS_SET_SIZES | \ 932 XFS_EXCHMAPS_INO1_WRITTEN | \ 933 XFS_EXCHMAPS_CLEAR_INO1_REFLINK | \ 934 XFS_EXCHMAPS_CLEAR_INO2_REFLINK) 935 936 /* This is the structure used to lay out an mapping exchange done log item. */ 937 struct xfs_xmd_log_format { 938 uint16_t xmd_type; /* xmd log item type */ 939 uint16_t xmd_size; /* size of this item */ 940 uint32_t __pad; 941 uint64_t xmd_xmi_id; /* id of corresponding xmi */ 942 }; 943 944 /* 945 * Dquot Log format definitions. 946 * 947 * The first two fields must be the type and size fitting into 948 * 32 bits : log_recovery code assumes that. 949 */ 950 struct xfs_dq_logformat { 951 uint16_t qlf_type; /* dquot log item type */ 952 uint16_t qlf_size; /* size of this item */ 953 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */ 954 int64_t qlf_blkno; /* blkno of dquot buffer */ 955 int32_t qlf_len; /* len of dquot buffer */ 956 uint32_t qlf_boffset; /* off of dquot in buffer */ 957 }; 958 959 /* 960 * log format struct for QUOTAOFF records. 961 * The first two fields must be the type and size fitting into 962 * 32 bits : log_recovery code assumes that. 963 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer 964 * to the first and ensures that the first logitem is taken out of the AIL 965 * only when the last one is securely committed. 966 */ 967 struct xfs_qoff_logformat { 968 unsigned short qf_type; /* quotaoff log item type */ 969 unsigned short qf_size; /* size of this item */ 970 unsigned int qf_flags; /* USR and/or GRP */ 971 char qf_pad[12]; /* padding for future */ 972 }; 973 974 /* 975 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits. 976 */ 977 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */ 978 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */ 979 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */ 980 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */ 981 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ 982 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ 983 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ 984 985 /* 986 * Conversion to and from the combined OQUOTA flag (if necessary) 987 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk() 988 */ 989 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */ 990 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */ 991 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */ 992 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */ 993 994 #define XFS_ALL_QUOTA_ACCT \ 995 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) 996 #define XFS_ALL_QUOTA_ENFD \ 997 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD) 998 #define XFS_ALL_QUOTA_CHKD \ 999 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD) 1000 1001 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ 1002 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ 1003 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\ 1004 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\ 1005 XFS_PQUOTA_CHKD) 1006 1007 /* 1008 * Inode create log item structure 1009 * 1010 * Log recovery assumes the first two entries are the type and size and they fit 1011 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so 1012 * decoding can be done correctly. 1013 */ 1014 struct xfs_icreate_log { 1015 uint16_t icl_type; /* type of log format structure */ 1016 uint16_t icl_size; /* size of log format structure */ 1017 __be32 icl_ag; /* ag being allocated in */ 1018 __be32 icl_agbno; /* start block of inode range */ 1019 __be32 icl_count; /* number of inodes to initialise */ 1020 __be32 icl_isize; /* size of inodes */ 1021 __be32 icl_length; /* length of extent to initialise */ 1022 __be32 icl_gen; /* inode generation number to use */ 1023 }; 1024 1025 /* 1026 * Flags for deferred attribute operations. 1027 * Upper bits are flags, lower byte is type code 1028 */ 1029 #define XFS_ATTRI_OP_FLAGS_SET 1 /* Set the attribute */ 1030 #define XFS_ATTRI_OP_FLAGS_REMOVE 2 /* Remove the attribute */ 1031 #define XFS_ATTRI_OP_FLAGS_REPLACE 3 /* Replace the attribute */ 1032 #define XFS_ATTRI_OP_FLAGS_PPTR_SET 4 /* Set parent pointer */ 1033 #define XFS_ATTRI_OP_FLAGS_PPTR_REMOVE 5 /* Remove parent pointer */ 1034 #define XFS_ATTRI_OP_FLAGS_PPTR_REPLACE 6 /* Replace parent pointer */ 1035 #define XFS_ATTRI_OP_FLAGS_TYPE_MASK 0xFF /* Flags type mask */ 1036 1037 /* 1038 * alfi_attr_filter captures the state of xfs_da_args.attr_filter, so it should 1039 * never have any other bits set. 1040 */ 1041 #define XFS_ATTRI_FILTER_MASK (XFS_ATTR_ROOT | \ 1042 XFS_ATTR_SECURE | \ 1043 XFS_ATTR_PARENT | \ 1044 XFS_ATTR_INCOMPLETE) 1045 1046 /* 1047 * This is the structure used to lay out an attr log item in the 1048 * log. 1049 */ 1050 struct xfs_attri_log_format { 1051 uint16_t alfi_type; /* attri log item type */ 1052 uint16_t alfi_size; /* size of this item */ 1053 uint32_t alfi_igen; /* generation of alfi_ino for pptr ops */ 1054 uint64_t alfi_id; /* attri identifier */ 1055 uint64_t alfi_ino; /* the inode for this attr operation */ 1056 uint32_t alfi_op_flags; /* marks the op as a set or remove */ 1057 union { 1058 uint32_t alfi_name_len; /* attr name length */ 1059 struct { 1060 /* 1061 * For PPTR_REPLACE, these are the lengths of the old 1062 * and new attr names. The new and old values must 1063 * have the same length. 1064 */ 1065 uint16_t alfi_old_name_len; 1066 uint16_t alfi_new_name_len; 1067 }; 1068 }; 1069 uint32_t alfi_value_len; /* attr value length */ 1070 uint32_t alfi_attr_filter;/* attr filter flags */ 1071 }; 1072 1073 struct xfs_attrd_log_format { 1074 uint16_t alfd_type; /* attrd log item type */ 1075 uint16_t alfd_size; /* size of this item */ 1076 uint32_t __pad; /* pad to 64 bit aligned */ 1077 uint64_t alfd_alf_id; /* id of corresponding attri */ 1078 }; 1079 1080 #endif /* __XFS_LOG_FORMAT_H__ */ 1081