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 xlog_assign_lsn(uint cycle,uint block)57 static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block) 58 { 59 return ((xfs_lsn_t)cycle << 32) | block; 60 } 61 xlog_get_cycle(char * ptr)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 /* Region types for iovec's i_type */ 90 #define XLOG_REG_TYPE_BFORMAT 1 91 #define XLOG_REG_TYPE_BCHUNK 2 92 #define XLOG_REG_TYPE_EFI_FORMAT 3 93 #define XLOG_REG_TYPE_EFD_FORMAT 4 94 #define XLOG_REG_TYPE_IFORMAT 5 95 #define XLOG_REG_TYPE_ICORE 6 96 #define XLOG_REG_TYPE_IEXT 7 97 #define XLOG_REG_TYPE_IBROOT 8 98 #define XLOG_REG_TYPE_ILOCAL 9 99 #define XLOG_REG_TYPE_IATTR_EXT 10 100 #define XLOG_REG_TYPE_IATTR_BROOT 11 101 #define XLOG_REG_TYPE_IATTR_LOCAL 12 102 #define XLOG_REG_TYPE_QFORMAT 13 103 #define XLOG_REG_TYPE_DQUOT 14 104 #define XLOG_REG_TYPE_QUOTAOFF 15 105 #define XLOG_REG_TYPE_LRHEADER 16 106 #define XLOG_REG_TYPE_UNMOUNT 17 107 #define XLOG_REG_TYPE_COMMIT 18 108 #define XLOG_REG_TYPE_TRANSHDR 19 109 #define XLOG_REG_TYPE_ICREATE 20 110 #define XLOG_REG_TYPE_RUI_FORMAT 21 111 #define XLOG_REG_TYPE_RUD_FORMAT 22 112 #define XLOG_REG_TYPE_CUI_FORMAT 23 113 #define XLOG_REG_TYPE_CUD_FORMAT 24 114 #define XLOG_REG_TYPE_BUI_FORMAT 25 115 #define XLOG_REG_TYPE_BUD_FORMAT 26 116 #define XLOG_REG_TYPE_ATTRI_FORMAT 27 117 #define XLOG_REG_TYPE_ATTRD_FORMAT 28 118 #define XLOG_REG_TYPE_ATTR_NAME 29 119 #define XLOG_REG_TYPE_ATTR_VALUE 30 120 #define XLOG_REG_TYPE_XMI_FORMAT 31 121 #define XLOG_REG_TYPE_XMD_FORMAT 32 122 #define XLOG_REG_TYPE_ATTR_NEWNAME 33 123 #define XLOG_REG_TYPE_ATTR_NEWVALUE 34 124 #define XLOG_REG_TYPE_MAX 34 125 126 /* 127 * Flags to log operation header 128 * 129 * The first write of a new transaction will be preceded with a start 130 * record, XLOG_START_TRANS. Once a transaction is committed, a commit 131 * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into 132 * the remainder of the current active in-core log, it is split up into 133 * multiple regions. Each partial region will be marked with a 134 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS. 135 * 136 */ 137 #define XLOG_START_TRANS 0x01 /* Start a new transaction */ 138 #define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */ 139 #define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */ 140 #define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */ 141 #define XLOG_END_TRANS 0x10 /* End a continued transaction */ 142 #define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */ 143 144 145 typedef struct xlog_op_header { 146 __be32 oh_tid; /* transaction id of operation : 4 b */ 147 __be32 oh_len; /* bytes in data region : 4 b */ 148 __u8 oh_clientid; /* who sent me this : 1 b */ 149 __u8 oh_flags; /* : 1 b */ 150 __u16 oh_res2; /* 32 bit align : 2 b */ 151 } xlog_op_header_t; 152 153 /* valid values for h_fmt */ 154 #define XLOG_FMT_UNKNOWN 0 155 #define XLOG_FMT_LINUX_LE 1 156 #define XLOG_FMT_LINUX_BE 2 157 #define XLOG_FMT_IRIX_BE 3 158 159 /* our fmt */ 160 #ifdef XFS_NATIVE_HOST 161 #define XLOG_FMT XLOG_FMT_LINUX_BE 162 #else 163 #define XLOG_FMT XLOG_FMT_LINUX_LE 164 #endif 165 166 typedef struct xlog_rec_header { 167 __be32 h_magicno; /* log record (LR) identifier : 4 */ 168 __be32 h_cycle; /* write cycle of log : 4 */ 169 __be32 h_version; /* LR version : 4 */ 170 __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */ 171 __be64 h_lsn; /* lsn of this LR : 8 */ 172 __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */ 173 __le32 h_crc; /* crc of log record : 4 */ 174 __be32 h_prev_block; /* block number to previous LR : 4 */ 175 __be32 h_num_logops; /* number of log operations in this LR : 4 */ 176 __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; 177 /* new fields */ 178 __be32 h_fmt; /* format of log record : 4 */ 179 uuid_t h_fs_uuid; /* uuid of FS : 16 */ 180 __be32 h_size; /* iclog size : 4 */ 181 } xlog_rec_header_t; 182 183 typedef struct xlog_rec_ext_header { 184 __be32 xh_cycle; /* write cycle of log : 4 */ 185 __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */ 186 } xlog_rec_ext_header_t; 187 188 /* 189 * Quite misnamed, because this union lays out the actual on-disk log buffer. 190 */ 191 typedef union xlog_in_core2 { 192 xlog_rec_header_t hic_header; 193 xlog_rec_ext_header_t hic_xheader; 194 char hic_sector[XLOG_HEADER_SIZE]; 195 } xlog_in_core_2_t; 196 197 /* not an on-disk structure, but needed by log recovery in userspace */ 198 typedef struct xfs_log_iovec { 199 void *i_addr; /* beginning address of region */ 200 int i_len; /* length in bytes of region */ 201 uint i_type; /* type of region */ 202 } xfs_log_iovec_t; 203 204 205 /* 206 * Transaction Header definitions. 207 * 208 * This is the structure written in the log at the head of every transaction. It 209 * identifies the type and id of the transaction, and contains the number of 210 * items logged by the transaction so we know how many to expect during 211 * recovery. 212 * 213 * Do not change the below structure without redoing the code in 214 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans(). 215 */ 216 typedef struct xfs_trans_header { 217 uint th_magic; /* magic number */ 218 uint th_type; /* transaction type */ 219 int32_t th_tid; /* transaction id (unused) */ 220 uint th_num_items; /* num items logged by trans */ 221 } xfs_trans_header_t; 222 223 #define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */ 224 225 /* 226 * The only type valid for th_type in CIL-enabled file system logs: 227 */ 228 #define XFS_TRANS_CHECKPOINT 40 229 230 /* 231 * Log item types. 232 */ 233 #define XFS_LI_EFI 0x1236 234 #define XFS_LI_EFD 0x1237 235 #define XFS_LI_IUNLINK 0x1238 236 #define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */ 237 #define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */ 238 #define XFS_LI_DQUOT 0x123d 239 #define XFS_LI_QUOTAOFF 0x123e 240 #define XFS_LI_ICREATE 0x123f 241 #define XFS_LI_RUI 0x1240 /* rmap update intent */ 242 #define XFS_LI_RUD 0x1241 243 #define XFS_LI_CUI 0x1242 /* refcount update intent */ 244 #define XFS_LI_CUD 0x1243 245 #define XFS_LI_BUI 0x1244 /* bmbt update intent */ 246 #define XFS_LI_BUD 0x1245 247 #define XFS_LI_ATTRI 0x1246 /* attr set/remove intent*/ 248 #define XFS_LI_ATTRD 0x1247 /* attr set/remove done */ 249 #define XFS_LI_XMI 0x1248 /* mapping exchange intent */ 250 #define XFS_LI_XMD 0x1249 /* mapping exchange done */ 251 252 #define XFS_LI_TYPE_DESC \ 253 { XFS_LI_EFI, "XFS_LI_EFI" }, \ 254 { XFS_LI_EFD, "XFS_LI_EFD" }, \ 255 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \ 256 { XFS_LI_INODE, "XFS_LI_INODE" }, \ 257 { XFS_LI_BUF, "XFS_LI_BUF" }, \ 258 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \ 259 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \ 260 { XFS_LI_ICREATE, "XFS_LI_ICREATE" }, \ 261 { XFS_LI_RUI, "XFS_LI_RUI" }, \ 262 { XFS_LI_RUD, "XFS_LI_RUD" }, \ 263 { XFS_LI_CUI, "XFS_LI_CUI" }, \ 264 { XFS_LI_CUD, "XFS_LI_CUD" }, \ 265 { XFS_LI_BUI, "XFS_LI_BUI" }, \ 266 { XFS_LI_BUD, "XFS_LI_BUD" }, \ 267 { XFS_LI_ATTRI, "XFS_LI_ATTRI" }, \ 268 { XFS_LI_ATTRD, "XFS_LI_ATTRD" }, \ 269 { XFS_LI_XMI, "XFS_LI_XMI" }, \ 270 { XFS_LI_XMD, "XFS_LI_XMD" } 271 272 /* 273 * Inode Log Item Format definitions. 274 * 275 * This is the structure used to lay out an inode log item in the 276 * log. The size of the inline data/extents/b-tree root to be logged 277 * (if any) is indicated in the ilf_dsize field. Changes to this structure 278 * must be added on to the end. 279 */ 280 struct xfs_inode_log_format { 281 uint16_t ilf_type; /* inode log item type */ 282 uint16_t ilf_size; /* size of this item */ 283 uint32_t ilf_fields; /* flags for fields logged */ 284 uint16_t ilf_asize; /* size of attr d/ext/root */ 285 uint16_t ilf_dsize; /* size of data/ext/root */ 286 uint32_t ilf_pad; /* pad for 64 bit boundary */ 287 uint64_t ilf_ino; /* inode number */ 288 union { 289 uint32_t ilfu_rdev; /* rdev value for dev inode*/ 290 uint8_t __pad[16]; /* unused */ 291 } ilf_u; 292 int64_t ilf_blkno; /* blkno of inode buffer */ 293 int32_t ilf_len; /* len of inode buffer */ 294 int32_t ilf_boffset; /* off of inode in buffer */ 295 }; 296 297 /* 298 * Old 32 bit systems will log in this format without the 64 bit 299 * alignment padding. Recovery will detect this and convert it to the 300 * correct format. 301 */ 302 struct xfs_inode_log_format_32 { 303 uint16_t ilf_type; /* inode log item type */ 304 uint16_t ilf_size; /* size of this item */ 305 uint32_t ilf_fields; /* flags for fields logged */ 306 uint16_t ilf_asize; /* size of attr d/ext/root */ 307 uint16_t ilf_dsize; /* size of data/ext/root */ 308 uint64_t ilf_ino; /* inode number */ 309 union { 310 uint32_t ilfu_rdev; /* rdev value for dev inode*/ 311 uint8_t __pad[16]; /* unused */ 312 } ilf_u; 313 int64_t ilf_blkno; /* blkno of inode buffer */ 314 int32_t ilf_len; /* len of inode buffer */ 315 int32_t ilf_boffset; /* off of inode in buffer */ 316 } __attribute__((packed)); 317 318 319 /* 320 * Flags for xfs_trans_log_inode flags field. 321 */ 322 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */ 323 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ 324 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ 325 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ 326 #define XFS_ILOG_DEV 0x010 /* log the dev field */ 327 #define XFS_ILOG_UUID 0x020 /* added long ago, but never used */ 328 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ 329 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ 330 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ 331 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */ 332 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */ 333 334 /* 335 * The timestamps are dirty, but not necessarily anything else in the inode 336 * core. Unlike the other fields above this one must never make it to disk 337 * in the ilf_fields of the inode_log_format, but is purely store in-memory in 338 * ili_fields in the inode_log_item. 339 */ 340 #define XFS_ILOG_TIMESTAMP 0x4000 341 342 /* 343 * The version field has been changed, but not necessarily anything else of 344 * interest. This must never make it to disk - it is used purely to ensure that 345 * the inode item ->precommit operation can update the fsync flag triggers 346 * in the inode item correctly. 347 */ 348 #define XFS_ILOG_IVERSION 0x8000 349 350 #define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 351 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \ 352 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 353 XFS_ILOG_ABROOT | XFS_ILOG_DOWNER | \ 354 XFS_ILOG_AOWNER) 355 356 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 357 XFS_ILOG_DBROOT) 358 359 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 360 XFS_ILOG_ABROOT) 361 362 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \ 363 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \ 364 XFS_ILOG_DEV | XFS_ILOG_ADATA | \ 365 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \ 366 XFS_ILOG_TIMESTAMP | XFS_ILOG_DOWNER | \ 367 XFS_ILOG_AOWNER) 368 xfs_ilog_fbroot(int w)369 static inline int xfs_ilog_fbroot(int w) 370 { 371 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT); 372 } 373 xfs_ilog_fext(int w)374 static inline int xfs_ilog_fext(int w) 375 { 376 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT); 377 } 378 xfs_ilog_fdata(int w)379 static inline int xfs_ilog_fdata(int w) 380 { 381 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA); 382 } 383 384 /* 385 * Incore version of the on-disk inode core structures. We log this directly 386 * into the journal in host CPU format (for better or worse) and as such 387 * directly mirrors the xfs_dinode structure as it must contain all the same 388 * information. 389 */ 390 typedef uint64_t xfs_log_timestamp_t; 391 392 /* Legacy timestamp encoding format. */ 393 struct xfs_log_legacy_timestamp { 394 int32_t t_sec; /* timestamp seconds */ 395 int32_t t_nsec; /* timestamp nanoseconds */ 396 }; 397 398 /* 399 * Define the format of the inode core that is logged. This structure must be 400 * kept identical to struct xfs_dinode except for the endianness annotations. 401 */ 402 struct xfs_log_dinode { 403 uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 404 uint16_t di_mode; /* mode and type of file */ 405 int8_t di_version; /* inode version */ 406 int8_t di_format; /* format of di_c data */ 407 uint8_t di_pad3[2]; /* unused in v2/3 inodes */ 408 uint32_t di_uid; /* owner's user id */ 409 uint32_t di_gid; /* owner's group id */ 410 uint32_t di_nlink; /* number of links to file */ 411 uint16_t di_projid_lo; /* lower part of owner's project id */ 412 uint16_t di_projid_hi; /* higher part of owner's project id */ 413 union { 414 /* Number of data fork extents if NREXT64 is set */ 415 uint64_t di_big_nextents; 416 417 /* Padding for V3 inodes without NREXT64 set. */ 418 uint64_t di_v3_pad; 419 420 /* Padding and inode flush counter for V2 inodes. */ 421 struct { 422 uint8_t di_v2_pad[6]; /* V2 inode zeroed space */ 423 uint16_t di_flushiter; /* V2 inode incremented on flush */ 424 }; 425 }; 426 xfs_log_timestamp_t di_atime; /* time last accessed */ 427 xfs_log_timestamp_t di_mtime; /* time last modified */ 428 xfs_log_timestamp_t di_ctime; /* time created/inode modified */ 429 xfs_fsize_t di_size; /* number of bytes in file */ 430 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */ 431 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 432 union { 433 /* 434 * For V2 inodes and V3 inodes without NREXT64 set, this 435 * is the number of data and attr fork extents. 436 */ 437 struct { 438 uint32_t di_nextents; 439 uint16_t di_anextents; 440 } __packed; 441 442 /* Number of attr fork extents if NREXT64 is set. */ 443 struct { 444 uint32_t di_big_anextents; 445 uint16_t di_nrext64_pad; 446 } __packed; 447 } __packed; 448 uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 449 int8_t di_aformat; /* format of attr fork's data */ 450 uint32_t di_dmevmask; /* DMIG event mask */ 451 uint16_t di_dmstate; /* DMIG state info */ 452 uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 453 uint32_t di_gen; /* generation number */ 454 455 /* di_next_unlinked is the only non-core field in the old dinode */ 456 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ 457 458 /* start of the extended dinode, writable fields */ 459 uint32_t di_crc; /* CRC of the inode */ 460 uint64_t di_changecount; /* number of attribute changes */ 461 462 /* 463 * The LSN we write to this field during formatting is not a reflection 464 * of the current on-disk LSN. It should never be used for recovery 465 * sequencing, nor should it be recovered into the on-disk inode at all. 466 * See xlog_recover_inode_commit_pass2() and xfs_log_dinode_to_disk() 467 * for details. 468 */ 469 xfs_lsn_t di_lsn; 470 471 uint64_t di_flags2; /* more random flags */ 472 uint32_t di_cowextsize; /* basic cow extent size for file */ 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 typedef 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 } xfs_buf_log_format_t; 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 xfs_blft_to_flags(struct xfs_buf_log_format * blf,enum xfs_blft type)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 xfs_blft_from_flags(struct xfs_buf_log_format * blf)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 typedef struct xfs_extent { 599 xfs_fsblock_t ext_start; 600 xfs_extlen_t ext_len; 601 } xfs_extent_t; 602 603 /* 604 * Since an xfs_extent_t has types (start:64, len: 32) 605 * there are different alignments on 32 bit and 64 bit kernels. 606 * So we provide the different variants for use by a 607 * conversion routine. 608 */ 609 typedef struct xfs_extent_32 { 610 uint64_t ext_start; 611 uint32_t ext_len; 612 } __attribute__((packed)) xfs_extent_32_t; 613 614 typedef struct xfs_extent_64 { 615 uint64_t ext_start; 616 uint32_t ext_len; 617 uint32_t ext_pad; 618 } xfs_extent_64_t; 619 620 /* 621 * This is the structure used to lay out an efi log item in the 622 * log. The efi_extents field is a variable size array whose 623 * size is given by efi_nextents. 624 */ 625 typedef struct xfs_efi_log_format { 626 uint16_t efi_type; /* efi log item type */ 627 uint16_t efi_size; /* size of this item */ 628 uint32_t efi_nextents; /* # extents to free */ 629 uint64_t efi_id; /* efi identifier */ 630 xfs_extent_t efi_extents[]; /* array of extents to free */ 631 } xfs_efi_log_format_t; 632 633 static inline size_t xfs_efi_log_format_sizeof(unsigned int nr)634 xfs_efi_log_format_sizeof( 635 unsigned int nr) 636 { 637 return sizeof(struct xfs_efi_log_format) + 638 nr * sizeof(struct xfs_extent); 639 } 640 641 typedef struct xfs_efi_log_format_32 { 642 uint16_t efi_type; /* efi log item type */ 643 uint16_t efi_size; /* size of this item */ 644 uint32_t efi_nextents; /* # extents to free */ 645 uint64_t efi_id; /* efi identifier */ 646 xfs_extent_32_t efi_extents[]; /* array of extents to free */ 647 } __attribute__((packed)) xfs_efi_log_format_32_t; 648 649 static inline size_t xfs_efi_log_format32_sizeof(unsigned int nr)650 xfs_efi_log_format32_sizeof( 651 unsigned int nr) 652 { 653 return sizeof(struct xfs_efi_log_format_32) + 654 nr * sizeof(struct xfs_extent_32); 655 } 656 657 typedef struct xfs_efi_log_format_64 { 658 uint16_t efi_type; /* efi log item type */ 659 uint16_t efi_size; /* size of this item */ 660 uint32_t efi_nextents; /* # extents to free */ 661 uint64_t efi_id; /* efi identifier */ 662 xfs_extent_64_t efi_extents[]; /* array of extents to free */ 663 } xfs_efi_log_format_64_t; 664 665 static inline size_t xfs_efi_log_format64_sizeof(unsigned int nr)666 xfs_efi_log_format64_sizeof( 667 unsigned int nr) 668 { 669 return sizeof(struct xfs_efi_log_format_64) + 670 nr * sizeof(struct xfs_extent_64); 671 } 672 673 /* 674 * This is the structure used to lay out an efd log item in the 675 * log. The efd_extents array is a variable size array whose 676 * size is given by efd_nextents; 677 */ 678 typedef struct xfs_efd_log_format { 679 uint16_t efd_type; /* efd log item type */ 680 uint16_t efd_size; /* size of this item */ 681 uint32_t efd_nextents; /* # of extents freed */ 682 uint64_t efd_efi_id; /* id of corresponding efi */ 683 xfs_extent_t efd_extents[]; /* array of extents freed */ 684 } xfs_efd_log_format_t; 685 686 static inline size_t xfs_efd_log_format_sizeof(unsigned int nr)687 xfs_efd_log_format_sizeof( 688 unsigned int nr) 689 { 690 return sizeof(struct xfs_efd_log_format) + 691 nr * sizeof(struct xfs_extent); 692 } 693 694 typedef struct xfs_efd_log_format_32 { 695 uint16_t efd_type; /* efd log item type */ 696 uint16_t efd_size; /* size of this item */ 697 uint32_t efd_nextents; /* # of extents freed */ 698 uint64_t efd_efi_id; /* id of corresponding efi */ 699 xfs_extent_32_t efd_extents[]; /* array of extents freed */ 700 } __attribute__((packed)) xfs_efd_log_format_32_t; 701 702 static inline size_t xfs_efd_log_format32_sizeof(unsigned int nr)703 xfs_efd_log_format32_sizeof( 704 unsigned int nr) 705 { 706 return sizeof(struct xfs_efd_log_format_32) + 707 nr * sizeof(struct xfs_extent_32); 708 } 709 710 typedef struct xfs_efd_log_format_64 { 711 uint16_t efd_type; /* efd log item type */ 712 uint16_t efd_size; /* size of this item */ 713 uint32_t efd_nextents; /* # of extents freed */ 714 uint64_t efd_efi_id; /* id of corresponding efi */ 715 xfs_extent_64_t efd_extents[]; /* array of extents freed */ 716 } xfs_efd_log_format_64_t; 717 718 static inline size_t xfs_efd_log_format64_sizeof(unsigned int nr)719 xfs_efd_log_format64_sizeof( 720 unsigned int nr) 721 { 722 return sizeof(struct xfs_efd_log_format_64) + 723 nr * sizeof(struct xfs_extent_64); 724 } 725 726 /* 727 * RUI/RUD (reverse mapping) log format definitions 728 */ 729 struct xfs_map_extent { 730 uint64_t me_owner; 731 uint64_t me_startblock; 732 uint64_t me_startoff; 733 uint32_t me_len; 734 uint32_t me_flags; 735 }; 736 737 /* rmap me_flags: upper bits are flags, lower byte is type code */ 738 #define XFS_RMAP_EXTENT_MAP 1 739 #define XFS_RMAP_EXTENT_MAP_SHARED 2 740 #define XFS_RMAP_EXTENT_UNMAP 3 741 #define XFS_RMAP_EXTENT_UNMAP_SHARED 4 742 #define XFS_RMAP_EXTENT_CONVERT 5 743 #define XFS_RMAP_EXTENT_CONVERT_SHARED 6 744 #define XFS_RMAP_EXTENT_ALLOC 7 745 #define XFS_RMAP_EXTENT_FREE 8 746 #define XFS_RMAP_EXTENT_TYPE_MASK 0xFF 747 748 #define XFS_RMAP_EXTENT_ATTR_FORK (1U << 31) 749 #define XFS_RMAP_EXTENT_BMBT_BLOCK (1U << 30) 750 #define XFS_RMAP_EXTENT_UNWRITTEN (1U << 29) 751 752 #define XFS_RMAP_EXTENT_FLAGS (XFS_RMAP_EXTENT_TYPE_MASK | \ 753 XFS_RMAP_EXTENT_ATTR_FORK | \ 754 XFS_RMAP_EXTENT_BMBT_BLOCK | \ 755 XFS_RMAP_EXTENT_UNWRITTEN) 756 757 /* 758 * This is the structure used to lay out an rui log item in the 759 * log. The rui_extents field is a variable size array whose 760 * size is given by rui_nextents. 761 */ 762 struct xfs_rui_log_format { 763 uint16_t rui_type; /* rui log item type */ 764 uint16_t rui_size; /* size of this item */ 765 uint32_t rui_nextents; /* # extents to free */ 766 uint64_t rui_id; /* rui identifier */ 767 struct xfs_map_extent rui_extents[]; /* array of extents to rmap */ 768 }; 769 770 static inline size_t xfs_rui_log_format_sizeof(unsigned int nr)771 xfs_rui_log_format_sizeof( 772 unsigned int nr) 773 { 774 return sizeof(struct xfs_rui_log_format) + 775 nr * sizeof(struct xfs_map_extent); 776 } 777 778 /* 779 * This is the structure used to lay out an rud log item in the 780 * log. The rud_extents array is a variable size array whose 781 * size is given by rud_nextents; 782 */ 783 struct xfs_rud_log_format { 784 uint16_t rud_type; /* rud log item type */ 785 uint16_t rud_size; /* size of this item */ 786 uint32_t __pad; 787 uint64_t rud_rui_id; /* id of corresponding rui */ 788 }; 789 790 /* 791 * CUI/CUD (refcount update) log format definitions 792 */ 793 struct xfs_phys_extent { 794 uint64_t pe_startblock; 795 uint32_t pe_len; 796 uint32_t pe_flags; 797 }; 798 799 /* refcount pe_flags: upper bits are flags, lower byte is type code */ 800 /* Type codes are taken directly from enum xfs_refcount_intent_type. */ 801 #define XFS_REFCOUNT_EXTENT_TYPE_MASK 0xFF 802 803 #define XFS_REFCOUNT_EXTENT_FLAGS (XFS_REFCOUNT_EXTENT_TYPE_MASK) 804 805 /* 806 * This is the structure used to lay out a cui log item in the 807 * log. The cui_extents field is a variable size array whose 808 * size is given by cui_nextents. 809 */ 810 struct xfs_cui_log_format { 811 uint16_t cui_type; /* cui log item type */ 812 uint16_t cui_size; /* size of this item */ 813 uint32_t cui_nextents; /* # extents to free */ 814 uint64_t cui_id; /* cui identifier */ 815 struct xfs_phys_extent cui_extents[]; /* array of extents */ 816 }; 817 818 static inline size_t xfs_cui_log_format_sizeof(unsigned int nr)819 xfs_cui_log_format_sizeof( 820 unsigned int nr) 821 { 822 return sizeof(struct xfs_cui_log_format) + 823 nr * sizeof(struct xfs_phys_extent); 824 } 825 826 /* 827 * This is the structure used to lay out a cud log item in the 828 * log. The cud_extents array is a variable size array whose 829 * size is given by cud_nextents; 830 */ 831 struct xfs_cud_log_format { 832 uint16_t cud_type; /* cud log item type */ 833 uint16_t cud_size; /* size of this item */ 834 uint32_t __pad; 835 uint64_t cud_cui_id; /* id of corresponding cui */ 836 }; 837 838 /* 839 * BUI/BUD (inode block mapping) log format definitions 840 */ 841 842 /* bmbt me_flags: upper bits are flags, lower byte is type code */ 843 /* Type codes are taken directly from enum xfs_bmap_intent_type. */ 844 #define XFS_BMAP_EXTENT_TYPE_MASK 0xFF 845 846 #define XFS_BMAP_EXTENT_ATTR_FORK (1U << 31) 847 #define XFS_BMAP_EXTENT_UNWRITTEN (1U << 30) 848 #define XFS_BMAP_EXTENT_REALTIME (1U << 29) 849 850 #define XFS_BMAP_EXTENT_FLAGS (XFS_BMAP_EXTENT_TYPE_MASK | \ 851 XFS_BMAP_EXTENT_ATTR_FORK | \ 852 XFS_BMAP_EXTENT_UNWRITTEN | \ 853 XFS_BMAP_EXTENT_REALTIME) 854 855 /* 856 * This is the structure used to lay out an bui log item in the 857 * log. The bui_extents field is a variable size array whose 858 * size is given by bui_nextents. 859 */ 860 struct xfs_bui_log_format { 861 uint16_t bui_type; /* bui log item type */ 862 uint16_t bui_size; /* size of this item */ 863 uint32_t bui_nextents; /* # extents to free */ 864 uint64_t bui_id; /* bui identifier */ 865 struct xfs_map_extent bui_extents[]; /* array of extents to bmap */ 866 }; 867 868 static inline size_t xfs_bui_log_format_sizeof(unsigned int nr)869 xfs_bui_log_format_sizeof( 870 unsigned int nr) 871 { 872 return sizeof(struct xfs_bui_log_format) + 873 nr * sizeof(struct xfs_map_extent); 874 } 875 876 /* 877 * This is the structure used to lay out an bud log item in the 878 * log. The bud_extents array is a variable size array whose 879 * size is given by bud_nextents; 880 */ 881 struct xfs_bud_log_format { 882 uint16_t bud_type; /* bud log item type */ 883 uint16_t bud_size; /* size of this item */ 884 uint32_t __pad; 885 uint64_t bud_bui_id; /* id of corresponding bui */ 886 }; 887 888 /* 889 * XMI/XMD (file mapping exchange) log format definitions 890 */ 891 892 /* This is the structure used to lay out an mapping exchange log item. */ 893 struct xfs_xmi_log_format { 894 uint16_t xmi_type; /* xmi log item type */ 895 uint16_t xmi_size; /* size of this item */ 896 uint32_t __pad; /* must be zero */ 897 uint64_t xmi_id; /* xmi identifier */ 898 899 uint64_t xmi_inode1; /* inumber of first file */ 900 uint64_t xmi_inode2; /* inumber of second file */ 901 uint32_t xmi_igen1; /* generation of first file */ 902 uint32_t xmi_igen2; /* generation of second file */ 903 uint64_t xmi_startoff1; /* block offset into file1 */ 904 uint64_t xmi_startoff2; /* block offset into file2 */ 905 uint64_t xmi_blockcount; /* number of blocks */ 906 uint64_t xmi_flags; /* XFS_EXCHMAPS_* */ 907 uint64_t xmi_isize1; /* intended file1 size */ 908 uint64_t xmi_isize2; /* intended file2 size */ 909 }; 910 911 /* Exchange mappings between extended attribute forks instead of data forks. */ 912 #define XFS_EXCHMAPS_ATTR_FORK (1ULL << 0) 913 914 /* Set the file sizes when finished. */ 915 #define XFS_EXCHMAPS_SET_SIZES (1ULL << 1) 916 917 /* 918 * Exchange the mappings of the two files only if the file allocation units 919 * mapped to file1's range have been written. 920 */ 921 #define XFS_EXCHMAPS_INO1_WRITTEN (1ULL << 2) 922 923 /* Clear the reflink flag from inode1 after the operation. */ 924 #define XFS_EXCHMAPS_CLEAR_INO1_REFLINK (1ULL << 3) 925 926 /* Clear the reflink flag from inode2 after the operation. */ 927 #define XFS_EXCHMAPS_CLEAR_INO2_REFLINK (1ULL << 4) 928 929 #define XFS_EXCHMAPS_LOGGED_FLAGS (XFS_EXCHMAPS_ATTR_FORK | \ 930 XFS_EXCHMAPS_SET_SIZES | \ 931 XFS_EXCHMAPS_INO1_WRITTEN | \ 932 XFS_EXCHMAPS_CLEAR_INO1_REFLINK | \ 933 XFS_EXCHMAPS_CLEAR_INO2_REFLINK) 934 935 /* This is the structure used to lay out an mapping exchange done log item. */ 936 struct xfs_xmd_log_format { 937 uint16_t xmd_type; /* xmd log item type */ 938 uint16_t xmd_size; /* size of this item */ 939 uint32_t __pad; 940 uint64_t xmd_xmi_id; /* id of corresponding xmi */ 941 }; 942 943 /* 944 * Dquot Log format definitions. 945 * 946 * The first two fields must be the type and size fitting into 947 * 32 bits : log_recovery code assumes that. 948 */ 949 typedef struct xfs_dq_logformat { 950 uint16_t qlf_type; /* dquot log item type */ 951 uint16_t qlf_size; /* size of this item */ 952 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */ 953 int64_t qlf_blkno; /* blkno of dquot buffer */ 954 int32_t qlf_len; /* len of dquot buffer */ 955 uint32_t qlf_boffset; /* off of dquot in buffer */ 956 } xfs_dq_logformat_t; 957 958 /* 959 * log format struct for QUOTAOFF records. 960 * The first two fields must be the type and size fitting into 961 * 32 bits : log_recovery code assumes that. 962 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer 963 * to the first and ensures that the first logitem is taken out of the AIL 964 * only when the last one is securely committed. 965 */ 966 typedef struct xfs_qoff_logformat { 967 unsigned short qf_type; /* quotaoff log item type */ 968 unsigned short qf_size; /* size of this item */ 969 unsigned int qf_flags; /* USR and/or GRP */ 970 char qf_pad[12]; /* padding for future */ 971 } xfs_qoff_logformat_t; 972 973 /* 974 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits. 975 */ 976 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */ 977 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */ 978 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */ 979 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */ 980 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ 981 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ 982 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ 983 984 /* 985 * Conversion to and from the combined OQUOTA flag (if necessary) 986 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk() 987 */ 988 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */ 989 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */ 990 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */ 991 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */ 992 993 #define XFS_ALL_QUOTA_ACCT \ 994 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) 995 #define XFS_ALL_QUOTA_ENFD \ 996 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD) 997 #define XFS_ALL_QUOTA_CHKD \ 998 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD) 999 1000 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ 1001 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ 1002 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\ 1003 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\ 1004 XFS_PQUOTA_CHKD) 1005 1006 /* 1007 * Inode create log item structure 1008 * 1009 * Log recovery assumes the first two entries are the type and size and they fit 1010 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so 1011 * decoding can be done correctly. 1012 */ 1013 struct xfs_icreate_log { 1014 uint16_t icl_type; /* type of log format structure */ 1015 uint16_t icl_size; /* size of log format structure */ 1016 __be32 icl_ag; /* ag being allocated in */ 1017 __be32 icl_agbno; /* start block of inode range */ 1018 __be32 icl_count; /* number of inodes to initialise */ 1019 __be32 icl_isize; /* size of inodes */ 1020 __be32 icl_length; /* length of extent to initialise */ 1021 __be32 icl_gen; /* inode generation number to use */ 1022 }; 1023 1024 /* 1025 * Flags for deferred attribute operations. 1026 * Upper bits are flags, lower byte is type code 1027 */ 1028 #define XFS_ATTRI_OP_FLAGS_SET 1 /* Set the attribute */ 1029 #define XFS_ATTRI_OP_FLAGS_REMOVE 2 /* Remove the attribute */ 1030 #define XFS_ATTRI_OP_FLAGS_REPLACE 3 /* Replace the attribute */ 1031 #define XFS_ATTRI_OP_FLAGS_PPTR_SET 4 /* Set parent pointer */ 1032 #define XFS_ATTRI_OP_FLAGS_PPTR_REMOVE 5 /* Remove parent pointer */ 1033 #define XFS_ATTRI_OP_FLAGS_PPTR_REPLACE 6 /* Replace parent pointer */ 1034 #define XFS_ATTRI_OP_FLAGS_TYPE_MASK 0xFF /* Flags type mask */ 1035 1036 /* 1037 * alfi_attr_filter captures the state of xfs_da_args.attr_filter, so it should 1038 * never have any other bits set. 1039 */ 1040 #define XFS_ATTRI_FILTER_MASK (XFS_ATTR_ROOT | \ 1041 XFS_ATTR_SECURE | \ 1042 XFS_ATTR_PARENT | \ 1043 XFS_ATTR_INCOMPLETE) 1044 1045 /* 1046 * This is the structure used to lay out an attr log item in the 1047 * log. 1048 */ 1049 struct xfs_attri_log_format { 1050 uint16_t alfi_type; /* attri log item type */ 1051 uint16_t alfi_size; /* size of this item */ 1052 uint32_t alfi_igen; /* generation of alfi_ino for pptr ops */ 1053 uint64_t alfi_id; /* attri identifier */ 1054 uint64_t alfi_ino; /* the inode for this attr operation */ 1055 uint32_t alfi_op_flags; /* marks the op as a set or remove */ 1056 union { 1057 uint32_t alfi_name_len; /* attr name length */ 1058 struct { 1059 /* 1060 * For PPTR_REPLACE, these are the lengths of the old 1061 * and new attr names. The new and old values must 1062 * have the same length. 1063 */ 1064 uint16_t alfi_old_name_len; 1065 uint16_t alfi_new_name_len; 1066 }; 1067 }; 1068 uint32_t alfi_value_len; /* attr value length */ 1069 uint32_t alfi_attr_filter;/* attr filter flags */ 1070 }; 1071 1072 struct xfs_attrd_log_format { 1073 uint16_t alfd_type; /* attrd log item type */ 1074 uint16_t alfd_size; /* size of this item */ 1075 uint32_t __pad; /* pad to 64 bit aligned */ 1076 uint64_t alfd_alf_id; /* id of corresponding attri */ 1077 }; 1078 1079 #endif /* __XFS_LOG_FORMAT_H__ */ 1080