1 /* 2 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #ifndef __XFS_LOG_FORMAT_H__ 19 #define __XFS_LOG_FORMAT_H__ 20 21 struct xfs_mount; 22 struct xfs_trans_res; 23 24 /* 25 * On-disk Log Format definitions. 26 * 27 * This file contains all the on-disk format definitions used within the log. It 28 * includes the physical log structure itself, as well as all the log item 29 * format structures that are written into the log and intepreted by log 30 * recovery. We start with the physical log format definitions, and then work 31 * through all the log items definitions and everything they encode into the 32 * log. 33 */ 34 typedef __uint32_t xlog_tid_t; 35 36 #define XLOG_MIN_ICLOGS 2 37 #define XLOG_MAX_ICLOGS 8 38 #define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */ 39 #define XLOG_VERSION_1 1 40 #define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */ 41 #define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2) 42 #define XLOG_MIN_RECORD_BSIZE (16*1024) /* eventually 32k */ 43 #define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */ 44 #define XLOG_MAX_RECORD_BSIZE (256*1024) 45 #define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */ 46 #define XLOG_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */ 47 #define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */ 48 #define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */ 49 #define XLOG_BTOLSUNIT(log, b) (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \ 50 (log)->l_mp->m_sb.sb_logsunit) 51 #define XLOG_LSUNITTOB(log, su) ((su) * (log)->l_mp->m_sb.sb_logsunit) 52 53 #define XLOG_HEADER_SIZE 512 54 55 /* Minimum number of transactions that must fit in the log (defined by mkfs) */ 56 #define XFS_MIN_LOG_FACTOR 3 57 58 #define XLOG_REC_SHIFT(log) \ 59 BTOBB(1 << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \ 60 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) 61 #define XLOG_TOTAL_REC_SHIFT(log) \ 62 BTOBB(XLOG_MAX_ICLOGS << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \ 63 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) 64 65 /* get lsn fields */ 66 #define CYCLE_LSN(lsn) ((uint)((lsn)>>32)) 67 #define BLOCK_LSN(lsn) ((uint)(lsn)) 68 69 /* this is used in a spot where we might otherwise double-endian-flip */ 70 #define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0]) 71 72 static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block) 73 { 74 return ((xfs_lsn_t)cycle << 32) | block; 75 } 76 77 static inline uint xlog_get_cycle(char *ptr) 78 { 79 if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM) 80 return be32_to_cpu(*((__be32 *)ptr + 1)); 81 else 82 return be32_to_cpu(*(__be32 *)ptr); 83 } 84 85 /* Log Clients */ 86 #define XFS_TRANSACTION 0x69 87 #define XFS_VOLUME 0x2 88 #define XFS_LOG 0xaa 89 90 #define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */ 91 92 /* Region types for iovec's i_type */ 93 #define XLOG_REG_TYPE_BFORMAT 1 94 #define XLOG_REG_TYPE_BCHUNK 2 95 #define XLOG_REG_TYPE_EFI_FORMAT 3 96 #define XLOG_REG_TYPE_EFD_FORMAT 4 97 #define XLOG_REG_TYPE_IFORMAT 5 98 #define XLOG_REG_TYPE_ICORE 6 99 #define XLOG_REG_TYPE_IEXT 7 100 #define XLOG_REG_TYPE_IBROOT 8 101 #define XLOG_REG_TYPE_ILOCAL 9 102 #define XLOG_REG_TYPE_IATTR_EXT 10 103 #define XLOG_REG_TYPE_IATTR_BROOT 11 104 #define XLOG_REG_TYPE_IATTR_LOCAL 12 105 #define XLOG_REG_TYPE_QFORMAT 13 106 #define XLOG_REG_TYPE_DQUOT 14 107 #define XLOG_REG_TYPE_QUOTAOFF 15 108 #define XLOG_REG_TYPE_LRHEADER 16 109 #define XLOG_REG_TYPE_UNMOUNT 17 110 #define XLOG_REG_TYPE_COMMIT 18 111 #define XLOG_REG_TYPE_TRANSHDR 19 112 #define XLOG_REG_TYPE_ICREATE 20 113 #define XLOG_REG_TYPE_RUI_FORMAT 21 114 #define XLOG_REG_TYPE_RUD_FORMAT 22 115 #define XLOG_REG_TYPE_CUI_FORMAT 23 116 #define XLOG_REG_TYPE_CUD_FORMAT 24 117 #define XLOG_REG_TYPE_BUI_FORMAT 25 118 #define XLOG_REG_TYPE_BUD_FORMAT 26 119 #define XLOG_REG_TYPE_MAX 26 120 121 /* 122 * Flags to log operation header 123 * 124 * The first write of a new transaction will be preceded with a start 125 * record, XLOG_START_TRANS. Once a transaction is committed, a commit 126 * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into 127 * the remainder of the current active in-core log, it is split up into 128 * multiple regions. Each partial region will be marked with a 129 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS. 130 * 131 */ 132 #define XLOG_START_TRANS 0x01 /* Start a new transaction */ 133 #define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */ 134 #define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */ 135 #define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */ 136 #define XLOG_END_TRANS 0x10 /* End a continued transaction */ 137 #define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */ 138 139 140 typedef struct xlog_op_header { 141 __be32 oh_tid; /* transaction id of operation : 4 b */ 142 __be32 oh_len; /* bytes in data region : 4 b */ 143 __u8 oh_clientid; /* who sent me this : 1 b */ 144 __u8 oh_flags; /* : 1 b */ 145 __u16 oh_res2; /* 32 bit align : 2 b */ 146 } xlog_op_header_t; 147 148 /* valid values for h_fmt */ 149 #define XLOG_FMT_UNKNOWN 0 150 #define XLOG_FMT_LINUX_LE 1 151 #define XLOG_FMT_LINUX_BE 2 152 #define XLOG_FMT_IRIX_BE 3 153 154 /* our fmt */ 155 #ifdef XFS_NATIVE_HOST 156 #define XLOG_FMT XLOG_FMT_LINUX_BE 157 #else 158 #define XLOG_FMT XLOG_FMT_LINUX_LE 159 #endif 160 161 typedef struct xlog_rec_header { 162 __be32 h_magicno; /* log record (LR) identifier : 4 */ 163 __be32 h_cycle; /* write cycle of log : 4 */ 164 __be32 h_version; /* LR version : 4 */ 165 __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */ 166 __be64 h_lsn; /* lsn of this LR : 8 */ 167 __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */ 168 __le32 h_crc; /* crc of log record : 4 */ 169 __be32 h_prev_block; /* block number to previous LR : 4 */ 170 __be32 h_num_logops; /* number of log operations in this LR : 4 */ 171 __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; 172 /* new fields */ 173 __be32 h_fmt; /* format of log record : 4 */ 174 uuid_t h_fs_uuid; /* uuid of FS : 16 */ 175 __be32 h_size; /* iclog size : 4 */ 176 } xlog_rec_header_t; 177 178 typedef struct xlog_rec_ext_header { 179 __be32 xh_cycle; /* write cycle of log : 4 */ 180 __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */ 181 } xlog_rec_ext_header_t; 182 183 /* 184 * Quite misnamed, because this union lays out the actual on-disk log buffer. 185 */ 186 typedef union xlog_in_core2 { 187 xlog_rec_header_t hic_header; 188 xlog_rec_ext_header_t hic_xheader; 189 char hic_sector[XLOG_HEADER_SIZE]; 190 } xlog_in_core_2_t; 191 192 /* not an on-disk structure, but needed by log recovery in userspace */ 193 typedef struct xfs_log_iovec { 194 void *i_addr; /* beginning address of region */ 195 int i_len; /* length in bytes of region */ 196 uint i_type; /* type of region */ 197 } xfs_log_iovec_t; 198 199 200 /* 201 * Transaction Header definitions. 202 * 203 * This is the structure written in the log at the head of every transaction. It 204 * identifies the type and id of the transaction, and contains the number of 205 * items logged by the transaction so we know how many to expect during 206 * recovery. 207 * 208 * Do not change the below structure without redoing the code in 209 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans(). 210 */ 211 typedef struct xfs_trans_header { 212 uint th_magic; /* magic number */ 213 uint th_type; /* transaction type */ 214 __int32_t th_tid; /* transaction id (unused) */ 215 uint th_num_items; /* num items logged by trans */ 216 } xfs_trans_header_t; 217 218 #define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */ 219 220 /* 221 * The only type valid for th_type in CIL-enabled file system logs: 222 */ 223 #define XFS_TRANS_CHECKPOINT 40 224 225 /* 226 * Log item types. 227 */ 228 #define XFS_LI_EFI 0x1236 229 #define XFS_LI_EFD 0x1237 230 #define XFS_LI_IUNLINK 0x1238 231 #define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */ 232 #define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */ 233 #define XFS_LI_DQUOT 0x123d 234 #define XFS_LI_QUOTAOFF 0x123e 235 #define XFS_LI_ICREATE 0x123f 236 #define XFS_LI_RUI 0x1240 /* rmap update intent */ 237 #define XFS_LI_RUD 0x1241 238 #define XFS_LI_CUI 0x1242 /* refcount update intent */ 239 #define XFS_LI_CUD 0x1243 240 #define XFS_LI_BUI 0x1244 /* bmbt update intent */ 241 #define XFS_LI_BUD 0x1245 242 243 #define XFS_LI_TYPE_DESC \ 244 { XFS_LI_EFI, "XFS_LI_EFI" }, \ 245 { XFS_LI_EFD, "XFS_LI_EFD" }, \ 246 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \ 247 { XFS_LI_INODE, "XFS_LI_INODE" }, \ 248 { XFS_LI_BUF, "XFS_LI_BUF" }, \ 249 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \ 250 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \ 251 { XFS_LI_ICREATE, "XFS_LI_ICREATE" }, \ 252 { XFS_LI_RUI, "XFS_LI_RUI" }, \ 253 { XFS_LI_RUD, "XFS_LI_RUD" }, \ 254 { XFS_LI_CUI, "XFS_LI_CUI" }, \ 255 { XFS_LI_CUD, "XFS_LI_CUD" }, \ 256 { XFS_LI_BUI, "XFS_LI_BUI" }, \ 257 { XFS_LI_BUD, "XFS_LI_BUD" } 258 259 /* 260 * Inode Log Item Format definitions. 261 * 262 * This is the structure used to lay out an inode log item in the 263 * log. The size of the inline data/extents/b-tree root to be logged 264 * (if any) is indicated in the ilf_dsize field. Changes to this structure 265 * must be added on to the end. 266 */ 267 typedef struct xfs_inode_log_format { 268 __uint16_t ilf_type; /* inode log item type */ 269 __uint16_t ilf_size; /* size of this item */ 270 __uint32_t ilf_fields; /* flags for fields logged */ 271 __uint16_t ilf_asize; /* size of attr d/ext/root */ 272 __uint16_t ilf_dsize; /* size of data/ext/root */ 273 __uint64_t ilf_ino; /* inode number */ 274 union { 275 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 276 uuid_t ilfu_uuid; /* mount point value */ 277 } ilf_u; 278 __int64_t ilf_blkno; /* blkno of inode buffer */ 279 __int32_t ilf_len; /* len of inode buffer */ 280 __int32_t ilf_boffset; /* off of inode in buffer */ 281 } xfs_inode_log_format_t; 282 283 typedef struct xfs_inode_log_format_32 { 284 __uint16_t ilf_type; /* inode log item type */ 285 __uint16_t ilf_size; /* size of this item */ 286 __uint32_t ilf_fields; /* flags for fields logged */ 287 __uint16_t ilf_asize; /* size of attr d/ext/root */ 288 __uint16_t ilf_dsize; /* size of data/ext/root */ 289 __uint64_t ilf_ino; /* inode number */ 290 union { 291 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 292 uuid_t ilfu_uuid; /* mount point value */ 293 } ilf_u; 294 __int64_t ilf_blkno; /* blkno of inode buffer */ 295 __int32_t ilf_len; /* len of inode buffer */ 296 __int32_t ilf_boffset; /* off of inode in buffer */ 297 } __attribute__((packed)) xfs_inode_log_format_32_t; 298 299 typedef struct xfs_inode_log_format_64 { 300 __uint16_t ilf_type; /* inode log item type */ 301 __uint16_t ilf_size; /* size of this item */ 302 __uint32_t ilf_fields; /* flags for fields logged */ 303 __uint16_t ilf_asize; /* size of attr d/ext/root */ 304 __uint16_t ilf_dsize; /* size of data/ext/root */ 305 __uint32_t ilf_pad; /* pad for 64 bit boundary */ 306 __uint64_t ilf_ino; /* inode number */ 307 union { 308 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 309 uuid_t ilfu_uuid; /* mount point value */ 310 } ilf_u; 311 __int64_t ilf_blkno; /* blkno of inode buffer */ 312 __int32_t ilf_len; /* len of inode buffer */ 313 __int32_t ilf_boffset; /* off of inode in buffer */ 314 } xfs_inode_log_format_64_t; 315 316 317 /* 318 * Flags for xfs_trans_log_inode flags field. 319 */ 320 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */ 321 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ 322 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ 323 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ 324 #define XFS_ILOG_DEV 0x010 /* log the dev field */ 325 #define XFS_ILOG_UUID 0x020 /* log the uuid field */ 326 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ 327 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ 328 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ 329 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */ 330 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */ 331 332 333 /* 334 * The timestamps are dirty, but not necessarily anything else in the inode 335 * core. Unlike the other fields above this one must never make it to disk 336 * in the ilf_fields of the inode_log_format, but is purely store in-memory in 337 * ili_fields in the inode_log_item. 338 */ 339 #define XFS_ILOG_TIMESTAMP 0x4000 340 341 #define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 342 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \ 343 XFS_ILOG_UUID | XFS_ILOG_ADATA | \ 344 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \ 345 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER) 346 347 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 348 XFS_ILOG_DBROOT) 349 350 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 351 XFS_ILOG_ABROOT) 352 353 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \ 354 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \ 355 XFS_ILOG_DEV | XFS_ILOG_UUID | \ 356 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 357 XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP | \ 358 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER) 359 360 static inline int xfs_ilog_fbroot(int w) 361 { 362 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT); 363 } 364 365 static inline int xfs_ilog_fext(int w) 366 { 367 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT); 368 } 369 370 static inline int xfs_ilog_fdata(int w) 371 { 372 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA); 373 } 374 375 /* 376 * Incore version of the on-disk inode core structures. We log this directly 377 * into the journal in host CPU format (for better or worse) and as such 378 * directly mirrors the xfs_dinode structure as it must contain all the same 379 * information. 380 */ 381 typedef struct xfs_ictimestamp { 382 __int32_t t_sec; /* timestamp seconds */ 383 __int32_t t_nsec; /* timestamp nanoseconds */ 384 } xfs_ictimestamp_t; 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 __uint8_t di_pad3[2]; /* unused in v2/3 inodes */ 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 __uint8_t di_pad[6]; /* unused, zeroed space */ 402 __uint16_t di_flushiter; /* incremented on flush */ 403 xfs_ictimestamp_t di_atime; /* time last accessed */ 404 xfs_ictimestamp_t di_mtime; /* time last modified */ 405 xfs_ictimestamp_t di_ctime; /* time created/inode modified */ 406 xfs_fsize_t di_size; /* number of bytes in file */ 407 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */ 408 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 409 xfs_extnum_t di_nextents; /* number of extents in data fork */ 410 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ 411 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 412 __int8_t di_aformat; /* format of attr fork's data */ 413 __uint32_t di_dmevmask; /* DMIG event mask */ 414 __uint16_t di_dmstate; /* DMIG state info */ 415 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 416 __uint32_t di_gen; /* generation number */ 417 418 /* di_next_unlinked is the only non-core field in the old dinode */ 419 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ 420 421 /* start of the extended dinode, writable fields */ 422 __uint32_t di_crc; /* CRC of the inode */ 423 __uint64_t di_changecount; /* number of attribute changes */ 424 xfs_lsn_t di_lsn; /* flush sequence */ 425 __uint64_t di_flags2; /* more random flags */ 426 __uint32_t di_cowextsize; /* basic cow extent size for file */ 427 __uint8_t di_pad2[12]; /* more padding for future expansion */ 428 429 /* fields only written to during inode creation */ 430 xfs_ictimestamp_t di_crtime; /* time created */ 431 xfs_ino_t di_ino; /* inode number */ 432 uuid_t di_uuid; /* UUID of the filesystem */ 433 434 /* structure must be padded to 64 bit alignment */ 435 }; 436 437 static inline uint xfs_log_dinode_size(int version) 438 { 439 if (version == 3) 440 return sizeof(struct xfs_log_dinode); 441 return offsetof(struct xfs_log_dinode, di_next_unlinked); 442 } 443 444 /* 445 * Buffer Log Format defintions 446 * 447 * These are the physical dirty bitmap defintions for the log format structure. 448 */ 449 #define XFS_BLF_CHUNK 128 450 #define XFS_BLF_SHIFT 7 451 #define BIT_TO_WORD_SHIFT 5 452 #define NBWORD (NBBY * sizeof(unsigned int)) 453 454 /* 455 * This flag indicates that the buffer contains on disk inodes 456 * and requires special recovery handling. 457 */ 458 #define XFS_BLF_INODE_BUF (1<<0) 459 460 /* 461 * This flag indicates that the buffer should not be replayed 462 * during recovery because its blocks are being freed. 463 */ 464 #define XFS_BLF_CANCEL (1<<1) 465 466 /* 467 * This flag indicates that the buffer contains on disk 468 * user or group dquots and may require special recovery handling. 469 */ 470 #define XFS_BLF_UDQUOT_BUF (1<<2) 471 #define XFS_BLF_PDQUOT_BUF (1<<3) 472 #define XFS_BLF_GDQUOT_BUF (1<<4) 473 474 /* 475 * This is the structure used to lay out a buf log item in the 476 * log. The data map describes which 128 byte chunks of the buffer 477 * have been logged. 478 */ 479 #define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) 480 481 typedef struct xfs_buf_log_format { 482 unsigned short blf_type; /* buf log item type indicator */ 483 unsigned short blf_size; /* size of this item */ 484 unsigned short blf_flags; /* misc state */ 485 unsigned short blf_len; /* number of blocks in this buf */ 486 __int64_t blf_blkno; /* starting blkno of this buf */ 487 unsigned int blf_map_size; /* used size of data bitmap in words */ 488 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */ 489 } xfs_buf_log_format_t; 490 491 /* 492 * All buffers now need to tell recovery where the magic number 493 * is so that it can verify and calculate the CRCs on the buffer correctly 494 * once the changes have been replayed into the buffer. 495 * 496 * The type value is held in the upper 5 bits of the blf_flags field, which is 497 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down. 498 */ 499 #define XFS_BLFT_BITS 5 500 #define XFS_BLFT_SHIFT 11 501 #define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT) 502 503 enum xfs_blft { 504 XFS_BLFT_UNKNOWN_BUF = 0, 505 XFS_BLFT_UDQUOT_BUF, 506 XFS_BLFT_PDQUOT_BUF, 507 XFS_BLFT_GDQUOT_BUF, 508 XFS_BLFT_BTREE_BUF, 509 XFS_BLFT_AGF_BUF, 510 XFS_BLFT_AGFL_BUF, 511 XFS_BLFT_AGI_BUF, 512 XFS_BLFT_DINO_BUF, 513 XFS_BLFT_SYMLINK_BUF, 514 XFS_BLFT_DIR_BLOCK_BUF, 515 XFS_BLFT_DIR_DATA_BUF, 516 XFS_BLFT_DIR_FREE_BUF, 517 XFS_BLFT_DIR_LEAF1_BUF, 518 XFS_BLFT_DIR_LEAFN_BUF, 519 XFS_BLFT_DA_NODE_BUF, 520 XFS_BLFT_ATTR_LEAF_BUF, 521 XFS_BLFT_ATTR_RMT_BUF, 522 XFS_BLFT_SB_BUF, 523 XFS_BLFT_RTBITMAP_BUF, 524 XFS_BLFT_RTSUMMARY_BUF, 525 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS), 526 }; 527 528 static inline void 529 xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type) 530 { 531 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF); 532 blf->blf_flags &= ~XFS_BLFT_MASK; 533 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK); 534 } 535 536 static inline __uint16_t 537 xfs_blft_from_flags(struct xfs_buf_log_format *blf) 538 { 539 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; 540 } 541 542 /* 543 * EFI/EFD log format definitions 544 */ 545 typedef struct xfs_extent { 546 xfs_fsblock_t ext_start; 547 xfs_extlen_t ext_len; 548 } xfs_extent_t; 549 550 /* 551 * Since an xfs_extent_t has types (start:64, len: 32) 552 * there are different alignments on 32 bit and 64 bit kernels. 553 * So we provide the different variants for use by a 554 * conversion routine. 555 */ 556 typedef struct xfs_extent_32 { 557 __uint64_t ext_start; 558 __uint32_t ext_len; 559 } __attribute__((packed)) xfs_extent_32_t; 560 561 typedef struct xfs_extent_64 { 562 __uint64_t ext_start; 563 __uint32_t ext_len; 564 __uint32_t ext_pad; 565 } xfs_extent_64_t; 566 567 /* 568 * This is the structure used to lay out an efi log item in the 569 * log. The efi_extents field is a variable size array whose 570 * size is given by efi_nextents. 571 */ 572 typedef struct xfs_efi_log_format { 573 __uint16_t efi_type; /* efi log item type */ 574 __uint16_t efi_size; /* size of this item */ 575 __uint32_t efi_nextents; /* # extents to free */ 576 __uint64_t efi_id; /* efi identifier */ 577 xfs_extent_t efi_extents[1]; /* array of extents to free */ 578 } xfs_efi_log_format_t; 579 580 typedef struct xfs_efi_log_format_32 { 581 __uint16_t efi_type; /* efi log item type */ 582 __uint16_t efi_size; /* size of this item */ 583 __uint32_t efi_nextents; /* # extents to free */ 584 __uint64_t efi_id; /* efi identifier */ 585 xfs_extent_32_t efi_extents[1]; /* array of extents to free */ 586 } __attribute__((packed)) xfs_efi_log_format_32_t; 587 588 typedef struct xfs_efi_log_format_64 { 589 __uint16_t efi_type; /* efi log item type */ 590 __uint16_t efi_size; /* size of this item */ 591 __uint32_t efi_nextents; /* # extents to free */ 592 __uint64_t efi_id; /* efi identifier */ 593 xfs_extent_64_t efi_extents[1]; /* array of extents to free */ 594 } xfs_efi_log_format_64_t; 595 596 /* 597 * This is the structure used to lay out an efd log item in the 598 * log. The efd_extents array is a variable size array whose 599 * size is given by efd_nextents; 600 */ 601 typedef struct xfs_efd_log_format { 602 __uint16_t efd_type; /* efd log item type */ 603 __uint16_t efd_size; /* size of this item */ 604 __uint32_t efd_nextents; /* # of extents freed */ 605 __uint64_t efd_efi_id; /* id of corresponding efi */ 606 xfs_extent_t efd_extents[1]; /* array of extents freed */ 607 } xfs_efd_log_format_t; 608 609 typedef struct xfs_efd_log_format_32 { 610 __uint16_t efd_type; /* efd log item type */ 611 __uint16_t efd_size; /* size of this item */ 612 __uint32_t efd_nextents; /* # of extents freed */ 613 __uint64_t efd_efi_id; /* id of corresponding efi */ 614 xfs_extent_32_t efd_extents[1]; /* array of extents freed */ 615 } __attribute__((packed)) xfs_efd_log_format_32_t; 616 617 typedef struct xfs_efd_log_format_64 { 618 __uint16_t efd_type; /* efd log item type */ 619 __uint16_t efd_size; /* size of this item */ 620 __uint32_t efd_nextents; /* # of extents freed */ 621 __uint64_t efd_efi_id; /* id of corresponding efi */ 622 xfs_extent_64_t efd_extents[1]; /* array of extents freed */ 623 } xfs_efd_log_format_64_t; 624 625 /* 626 * RUI/RUD (reverse mapping) log format definitions 627 */ 628 struct xfs_map_extent { 629 __uint64_t me_owner; 630 __uint64_t me_startblock; 631 __uint64_t me_startoff; 632 __uint32_t me_len; 633 __uint32_t me_flags; 634 }; 635 636 /* rmap me_flags: upper bits are flags, lower byte is type code */ 637 #define XFS_RMAP_EXTENT_MAP 1 638 #define XFS_RMAP_EXTENT_MAP_SHARED 2 639 #define XFS_RMAP_EXTENT_UNMAP 3 640 #define XFS_RMAP_EXTENT_UNMAP_SHARED 4 641 #define XFS_RMAP_EXTENT_CONVERT 5 642 #define XFS_RMAP_EXTENT_CONVERT_SHARED 6 643 #define XFS_RMAP_EXTENT_ALLOC 7 644 #define XFS_RMAP_EXTENT_FREE 8 645 #define XFS_RMAP_EXTENT_TYPE_MASK 0xFF 646 647 #define XFS_RMAP_EXTENT_ATTR_FORK (1U << 31) 648 #define XFS_RMAP_EXTENT_BMBT_BLOCK (1U << 30) 649 #define XFS_RMAP_EXTENT_UNWRITTEN (1U << 29) 650 651 #define XFS_RMAP_EXTENT_FLAGS (XFS_RMAP_EXTENT_TYPE_MASK | \ 652 XFS_RMAP_EXTENT_ATTR_FORK | \ 653 XFS_RMAP_EXTENT_BMBT_BLOCK | \ 654 XFS_RMAP_EXTENT_UNWRITTEN) 655 656 /* 657 * This is the structure used to lay out an rui log item in the 658 * log. The rui_extents field is a variable size array whose 659 * size is given by rui_nextents. 660 */ 661 struct xfs_rui_log_format { 662 __uint16_t rui_type; /* rui log item type */ 663 __uint16_t rui_size; /* size of this item */ 664 __uint32_t rui_nextents; /* # extents to free */ 665 __uint64_t rui_id; /* rui identifier */ 666 struct xfs_map_extent rui_extents[]; /* array of extents to rmap */ 667 }; 668 669 static inline size_t 670 xfs_rui_log_format_sizeof( 671 unsigned int nr) 672 { 673 return sizeof(struct xfs_rui_log_format) + 674 nr * sizeof(struct xfs_map_extent); 675 } 676 677 /* 678 * This is the structure used to lay out an rud log item in the 679 * log. The rud_extents array is a variable size array whose 680 * size is given by rud_nextents; 681 */ 682 struct xfs_rud_log_format { 683 __uint16_t rud_type; /* rud log item type */ 684 __uint16_t rud_size; /* size of this item */ 685 __uint32_t __pad; 686 __uint64_t rud_rui_id; /* id of corresponding rui */ 687 }; 688 689 /* 690 * CUI/CUD (refcount update) log format definitions 691 */ 692 struct xfs_phys_extent { 693 __uint64_t pe_startblock; 694 __uint32_t pe_len; 695 __uint32_t pe_flags; 696 }; 697 698 /* refcount pe_flags: upper bits are flags, lower byte is type code */ 699 /* Type codes are taken directly from enum xfs_refcount_intent_type. */ 700 #define XFS_REFCOUNT_EXTENT_TYPE_MASK 0xFF 701 702 #define XFS_REFCOUNT_EXTENT_FLAGS (XFS_REFCOUNT_EXTENT_TYPE_MASK) 703 704 /* 705 * This is the structure used to lay out a cui log item in the 706 * log. The cui_extents field is a variable size array whose 707 * size is given by cui_nextents. 708 */ 709 struct xfs_cui_log_format { 710 __uint16_t cui_type; /* cui log item type */ 711 __uint16_t cui_size; /* size of this item */ 712 __uint32_t cui_nextents; /* # extents to free */ 713 __uint64_t cui_id; /* cui identifier */ 714 struct xfs_phys_extent cui_extents[]; /* array of extents */ 715 }; 716 717 static inline size_t 718 xfs_cui_log_format_sizeof( 719 unsigned int nr) 720 { 721 return sizeof(struct xfs_cui_log_format) + 722 nr * sizeof(struct xfs_phys_extent); 723 } 724 725 /* 726 * This is the structure used to lay out a cud log item in the 727 * log. The cud_extents array is a variable size array whose 728 * size is given by cud_nextents; 729 */ 730 struct xfs_cud_log_format { 731 __uint16_t cud_type; /* cud log item type */ 732 __uint16_t cud_size; /* size of this item */ 733 __uint32_t __pad; 734 __uint64_t cud_cui_id; /* id of corresponding cui */ 735 }; 736 737 /* 738 * BUI/BUD (inode block mapping) log format definitions 739 */ 740 741 /* bmbt me_flags: upper bits are flags, lower byte is type code */ 742 /* Type codes are taken directly from enum xfs_bmap_intent_type. */ 743 #define XFS_BMAP_EXTENT_TYPE_MASK 0xFF 744 745 #define XFS_BMAP_EXTENT_ATTR_FORK (1U << 31) 746 #define XFS_BMAP_EXTENT_UNWRITTEN (1U << 30) 747 748 #define XFS_BMAP_EXTENT_FLAGS (XFS_BMAP_EXTENT_TYPE_MASK | \ 749 XFS_BMAP_EXTENT_ATTR_FORK | \ 750 XFS_BMAP_EXTENT_UNWRITTEN) 751 752 /* 753 * This is the structure used to lay out an bui log item in the 754 * log. The bui_extents field is a variable size array whose 755 * size is given by bui_nextents. 756 */ 757 struct xfs_bui_log_format { 758 __uint16_t bui_type; /* bui log item type */ 759 __uint16_t bui_size; /* size of this item */ 760 __uint32_t bui_nextents; /* # extents to free */ 761 __uint64_t bui_id; /* bui identifier */ 762 struct xfs_map_extent bui_extents[]; /* array of extents to bmap */ 763 }; 764 765 static inline size_t 766 xfs_bui_log_format_sizeof( 767 unsigned int nr) 768 { 769 return sizeof(struct xfs_bui_log_format) + 770 nr * sizeof(struct xfs_map_extent); 771 } 772 773 /* 774 * This is the structure used to lay out an bud log item in the 775 * log. The bud_extents array is a variable size array whose 776 * size is given by bud_nextents; 777 */ 778 struct xfs_bud_log_format { 779 __uint16_t bud_type; /* bud log item type */ 780 __uint16_t bud_size; /* size of this item */ 781 __uint32_t __pad; 782 __uint64_t bud_bui_id; /* id of corresponding bui */ 783 }; 784 785 /* 786 * Dquot Log format definitions. 787 * 788 * The first two fields must be the type and size fitting into 789 * 32 bits : log_recovery code assumes that. 790 */ 791 typedef struct xfs_dq_logformat { 792 __uint16_t qlf_type; /* dquot log item type */ 793 __uint16_t qlf_size; /* size of this item */ 794 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */ 795 __int64_t qlf_blkno; /* blkno of dquot buffer */ 796 __int32_t qlf_len; /* len of dquot buffer */ 797 __uint32_t qlf_boffset; /* off of dquot in buffer */ 798 } xfs_dq_logformat_t; 799 800 /* 801 * log format struct for QUOTAOFF records. 802 * The first two fields must be the type and size fitting into 803 * 32 bits : log_recovery code assumes that. 804 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer 805 * to the first and ensures that the first logitem is taken out of the AIL 806 * only when the last one is securely committed. 807 */ 808 typedef struct xfs_qoff_logformat { 809 unsigned short qf_type; /* quotaoff log item type */ 810 unsigned short qf_size; /* size of this item */ 811 unsigned int qf_flags; /* USR and/or GRP */ 812 char qf_pad[12]; /* padding for future */ 813 } xfs_qoff_logformat_t; 814 815 /* 816 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits. 817 */ 818 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */ 819 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */ 820 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */ 821 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */ 822 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ 823 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ 824 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ 825 826 /* 827 * Conversion to and from the combined OQUOTA flag (if necessary) 828 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk() 829 */ 830 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */ 831 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */ 832 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */ 833 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */ 834 835 #define XFS_ALL_QUOTA_ACCT \ 836 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) 837 #define XFS_ALL_QUOTA_ENFD \ 838 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD) 839 #define XFS_ALL_QUOTA_CHKD \ 840 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD) 841 842 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ 843 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ 844 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\ 845 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\ 846 XFS_PQUOTA_CHKD) 847 848 /* 849 * Inode create log item structure 850 * 851 * Log recovery assumes the first two entries are the type and size and they fit 852 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so 853 * decoding can be done correctly. 854 */ 855 struct xfs_icreate_log { 856 __uint16_t icl_type; /* type of log format structure */ 857 __uint16_t icl_size; /* size of log format structure */ 858 __be32 icl_ag; /* ag being allocated in */ 859 __be32 icl_agbno; /* start block of inode range */ 860 __be32 icl_count; /* number of inodes to initialise */ 861 __be32 icl_isize; /* size of inodes */ 862 __be32 icl_length; /* length of extent to initialise */ 863 __be32 icl_gen; /* inode generation number to use */ 864 }; 865 866 #endif /* __XFS_LOG_FORMAT_H__ */ 867