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_MAX 22 116 117 /* 118 * Flags to log operation header 119 * 120 * The first write of a new transaction will be preceded with a start 121 * record, XLOG_START_TRANS. Once a transaction is committed, a commit 122 * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into 123 * the remainder of the current active in-core log, it is split up into 124 * multiple regions. Each partial region will be marked with a 125 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS. 126 * 127 */ 128 #define XLOG_START_TRANS 0x01 /* Start a new transaction */ 129 #define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */ 130 #define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */ 131 #define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */ 132 #define XLOG_END_TRANS 0x10 /* End a continued transaction */ 133 #define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */ 134 135 136 typedef struct xlog_op_header { 137 __be32 oh_tid; /* transaction id of operation : 4 b */ 138 __be32 oh_len; /* bytes in data region : 4 b */ 139 __u8 oh_clientid; /* who sent me this : 1 b */ 140 __u8 oh_flags; /* : 1 b */ 141 __u16 oh_res2; /* 32 bit align : 2 b */ 142 } xlog_op_header_t; 143 144 /* valid values for h_fmt */ 145 #define XLOG_FMT_UNKNOWN 0 146 #define XLOG_FMT_LINUX_LE 1 147 #define XLOG_FMT_LINUX_BE 2 148 #define XLOG_FMT_IRIX_BE 3 149 150 /* our fmt */ 151 #ifdef XFS_NATIVE_HOST 152 #define XLOG_FMT XLOG_FMT_LINUX_BE 153 #else 154 #define XLOG_FMT XLOG_FMT_LINUX_LE 155 #endif 156 157 typedef struct xlog_rec_header { 158 __be32 h_magicno; /* log record (LR) identifier : 4 */ 159 __be32 h_cycle; /* write cycle of log : 4 */ 160 __be32 h_version; /* LR version : 4 */ 161 __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */ 162 __be64 h_lsn; /* lsn of this LR : 8 */ 163 __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */ 164 __le32 h_crc; /* crc of log record : 4 */ 165 __be32 h_prev_block; /* block number to previous LR : 4 */ 166 __be32 h_num_logops; /* number of log operations in this LR : 4 */ 167 __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; 168 /* new fields */ 169 __be32 h_fmt; /* format of log record : 4 */ 170 uuid_t h_fs_uuid; /* uuid of FS : 16 */ 171 __be32 h_size; /* iclog size : 4 */ 172 } xlog_rec_header_t; 173 174 typedef struct xlog_rec_ext_header { 175 __be32 xh_cycle; /* write cycle of log : 4 */ 176 __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */ 177 } xlog_rec_ext_header_t; 178 179 /* 180 * Quite misnamed, because this union lays out the actual on-disk log buffer. 181 */ 182 typedef union xlog_in_core2 { 183 xlog_rec_header_t hic_header; 184 xlog_rec_ext_header_t hic_xheader; 185 char hic_sector[XLOG_HEADER_SIZE]; 186 } xlog_in_core_2_t; 187 188 /* not an on-disk structure, but needed by log recovery in userspace */ 189 typedef struct xfs_log_iovec { 190 void *i_addr; /* beginning address of region */ 191 int i_len; /* length in bytes of region */ 192 uint i_type; /* type of region */ 193 } xfs_log_iovec_t; 194 195 196 /* 197 * Transaction Header definitions. 198 * 199 * This is the structure written in the log at the head of every transaction. It 200 * identifies the type and id of the transaction, and contains the number of 201 * items logged by the transaction so we know how many to expect during 202 * recovery. 203 * 204 * Do not change the below structure without redoing the code in 205 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans(). 206 */ 207 typedef struct xfs_trans_header { 208 uint th_magic; /* magic number */ 209 uint th_type; /* transaction type */ 210 __int32_t th_tid; /* transaction id (unused) */ 211 uint th_num_items; /* num items logged by trans */ 212 } xfs_trans_header_t; 213 214 #define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */ 215 216 /* 217 * The only type valid for th_type in CIL-enabled file system logs: 218 */ 219 #define XFS_TRANS_CHECKPOINT 40 220 221 /* 222 * Log item types. 223 */ 224 #define XFS_LI_EFI 0x1236 225 #define XFS_LI_EFD 0x1237 226 #define XFS_LI_IUNLINK 0x1238 227 #define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */ 228 #define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */ 229 #define XFS_LI_DQUOT 0x123d 230 #define XFS_LI_QUOTAOFF 0x123e 231 #define XFS_LI_ICREATE 0x123f 232 #define XFS_LI_RUI 0x1240 /* rmap update intent */ 233 #define XFS_LI_RUD 0x1241 234 235 #define XFS_LI_TYPE_DESC \ 236 { XFS_LI_EFI, "XFS_LI_EFI" }, \ 237 { XFS_LI_EFD, "XFS_LI_EFD" }, \ 238 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \ 239 { XFS_LI_INODE, "XFS_LI_INODE" }, \ 240 { XFS_LI_BUF, "XFS_LI_BUF" }, \ 241 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \ 242 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \ 243 { XFS_LI_ICREATE, "XFS_LI_ICREATE" }, \ 244 { XFS_LI_RUI, "XFS_LI_RUI" }, \ 245 { XFS_LI_RUD, "XFS_LI_RUD" } 246 247 /* 248 * Inode Log Item Format definitions. 249 * 250 * This is the structure used to lay out an inode log item in the 251 * log. The size of the inline data/extents/b-tree root to be logged 252 * (if any) is indicated in the ilf_dsize field. Changes to this structure 253 * must be added on to the end. 254 */ 255 typedef struct xfs_inode_log_format { 256 __uint16_t ilf_type; /* inode log item type */ 257 __uint16_t ilf_size; /* size of this item */ 258 __uint32_t ilf_fields; /* flags for fields logged */ 259 __uint16_t ilf_asize; /* size of attr d/ext/root */ 260 __uint16_t ilf_dsize; /* size of data/ext/root */ 261 __uint64_t ilf_ino; /* inode number */ 262 union { 263 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 264 uuid_t ilfu_uuid; /* mount point value */ 265 } ilf_u; 266 __int64_t ilf_blkno; /* blkno of inode buffer */ 267 __int32_t ilf_len; /* len of inode buffer */ 268 __int32_t ilf_boffset; /* off of inode in buffer */ 269 } xfs_inode_log_format_t; 270 271 typedef struct xfs_inode_log_format_32 { 272 __uint16_t ilf_type; /* inode log item type */ 273 __uint16_t ilf_size; /* size of this item */ 274 __uint32_t ilf_fields; /* flags for fields logged */ 275 __uint16_t ilf_asize; /* size of attr d/ext/root */ 276 __uint16_t ilf_dsize; /* size of data/ext/root */ 277 __uint64_t ilf_ino; /* inode number */ 278 union { 279 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 280 uuid_t ilfu_uuid; /* mount point value */ 281 } ilf_u; 282 __int64_t ilf_blkno; /* blkno of inode buffer */ 283 __int32_t ilf_len; /* len of inode buffer */ 284 __int32_t ilf_boffset; /* off of inode in buffer */ 285 } __attribute__((packed)) xfs_inode_log_format_32_t; 286 287 typedef struct xfs_inode_log_format_64 { 288 __uint16_t ilf_type; /* inode log item type */ 289 __uint16_t ilf_size; /* size of this item */ 290 __uint32_t ilf_fields; /* flags for fields logged */ 291 __uint16_t ilf_asize; /* size of attr d/ext/root */ 292 __uint16_t ilf_dsize; /* size of data/ext/root */ 293 __uint32_t ilf_pad; /* pad for 64 bit boundary */ 294 __uint64_t ilf_ino; /* inode number */ 295 union { 296 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 297 uuid_t ilfu_uuid; /* mount point value */ 298 } ilf_u; 299 __int64_t ilf_blkno; /* blkno of inode buffer */ 300 __int32_t ilf_len; /* len of inode buffer */ 301 __int32_t ilf_boffset; /* off of inode in buffer */ 302 } xfs_inode_log_format_64_t; 303 304 305 /* 306 * Flags for xfs_trans_log_inode flags field. 307 */ 308 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */ 309 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ 310 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ 311 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ 312 #define XFS_ILOG_DEV 0x010 /* log the dev field */ 313 #define XFS_ILOG_UUID 0x020 /* log the uuid field */ 314 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ 315 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ 316 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ 317 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */ 318 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */ 319 320 321 /* 322 * The timestamps are dirty, but not necessarily anything else in the inode 323 * core. Unlike the other fields above this one must never make it to disk 324 * in the ilf_fields of the inode_log_format, but is purely store in-memory in 325 * ili_fields in the inode_log_item. 326 */ 327 #define XFS_ILOG_TIMESTAMP 0x4000 328 329 #define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 330 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \ 331 XFS_ILOG_UUID | XFS_ILOG_ADATA | \ 332 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \ 333 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER) 334 335 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 336 XFS_ILOG_DBROOT) 337 338 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 339 XFS_ILOG_ABROOT) 340 341 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \ 342 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \ 343 XFS_ILOG_DEV | XFS_ILOG_UUID | \ 344 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 345 XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP | \ 346 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER) 347 348 static inline int xfs_ilog_fbroot(int w) 349 { 350 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT); 351 } 352 353 static inline int xfs_ilog_fext(int w) 354 { 355 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT); 356 } 357 358 static inline int xfs_ilog_fdata(int w) 359 { 360 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA); 361 } 362 363 /* 364 * Incore version of the on-disk inode core structures. We log this directly 365 * into the journal in host CPU format (for better or worse) and as such 366 * directly mirrors the xfs_dinode structure as it must contain all the same 367 * information. 368 */ 369 typedef struct xfs_ictimestamp { 370 __int32_t t_sec; /* timestamp seconds */ 371 __int32_t t_nsec; /* timestamp nanoseconds */ 372 } xfs_ictimestamp_t; 373 374 /* 375 * Define the format of the inode core that is logged. This structure must be 376 * kept identical to struct xfs_dinode except for the endianness annotations. 377 */ 378 struct xfs_log_dinode { 379 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 380 __uint16_t di_mode; /* mode and type of file */ 381 __int8_t di_version; /* inode version */ 382 __int8_t di_format; /* format of di_c data */ 383 __uint8_t di_pad3[2]; /* unused in v2/3 inodes */ 384 __uint32_t di_uid; /* owner's user id */ 385 __uint32_t di_gid; /* owner's group id */ 386 __uint32_t di_nlink; /* number of links to file */ 387 __uint16_t di_projid_lo; /* lower part of owner's project id */ 388 __uint16_t di_projid_hi; /* higher part of owner's project id */ 389 __uint8_t di_pad[6]; /* unused, zeroed space */ 390 __uint16_t di_flushiter; /* incremented on flush */ 391 xfs_ictimestamp_t di_atime; /* time last accessed */ 392 xfs_ictimestamp_t di_mtime; /* time last modified */ 393 xfs_ictimestamp_t di_ctime; /* time created/inode modified */ 394 xfs_fsize_t di_size; /* number of bytes in file */ 395 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */ 396 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 397 xfs_extnum_t di_nextents; /* number of extents in data fork */ 398 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ 399 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 400 __int8_t di_aformat; /* format of attr fork's data */ 401 __uint32_t di_dmevmask; /* DMIG event mask */ 402 __uint16_t di_dmstate; /* DMIG state info */ 403 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 404 __uint32_t di_gen; /* generation number */ 405 406 /* di_next_unlinked is the only non-core field in the old dinode */ 407 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ 408 409 /* start of the extended dinode, writable fields */ 410 __uint32_t di_crc; /* CRC of the inode */ 411 __uint64_t di_changecount; /* number of attribute changes */ 412 xfs_lsn_t di_lsn; /* flush sequence */ 413 __uint64_t di_flags2; /* more random flags */ 414 __uint8_t di_pad2[16]; /* more padding for future expansion */ 415 416 /* fields only written to during inode creation */ 417 xfs_ictimestamp_t di_crtime; /* time created */ 418 xfs_ino_t di_ino; /* inode number */ 419 uuid_t di_uuid; /* UUID of the filesystem */ 420 421 /* structure must be padded to 64 bit alignment */ 422 }; 423 424 static inline uint xfs_log_dinode_size(int version) 425 { 426 if (version == 3) 427 return sizeof(struct xfs_log_dinode); 428 return offsetof(struct xfs_log_dinode, di_next_unlinked); 429 } 430 431 /* 432 * Buffer Log Format defintions 433 * 434 * These are the physical dirty bitmap defintions for the log format structure. 435 */ 436 #define XFS_BLF_CHUNK 128 437 #define XFS_BLF_SHIFT 7 438 #define BIT_TO_WORD_SHIFT 5 439 #define NBWORD (NBBY * sizeof(unsigned int)) 440 441 /* 442 * This flag indicates that the buffer contains on disk inodes 443 * and requires special recovery handling. 444 */ 445 #define XFS_BLF_INODE_BUF (1<<0) 446 447 /* 448 * This flag indicates that the buffer should not be replayed 449 * during recovery because its blocks are being freed. 450 */ 451 #define XFS_BLF_CANCEL (1<<1) 452 453 /* 454 * This flag indicates that the buffer contains on disk 455 * user or group dquots and may require special recovery handling. 456 */ 457 #define XFS_BLF_UDQUOT_BUF (1<<2) 458 #define XFS_BLF_PDQUOT_BUF (1<<3) 459 #define XFS_BLF_GDQUOT_BUF (1<<4) 460 461 /* 462 * This is the structure used to lay out a buf log item in the 463 * log. The data map describes which 128 byte chunks of the buffer 464 * have been logged. 465 */ 466 #define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) 467 468 typedef struct xfs_buf_log_format { 469 unsigned short blf_type; /* buf log item type indicator */ 470 unsigned short blf_size; /* size of this item */ 471 ushort blf_flags; /* misc state */ 472 ushort blf_len; /* number of blocks in this buf */ 473 __int64_t blf_blkno; /* starting blkno of this buf */ 474 unsigned int blf_map_size; /* used size of data bitmap in words */ 475 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */ 476 } xfs_buf_log_format_t; 477 478 /* 479 * All buffers now need to tell recovery where the magic number 480 * is so that it can verify and calculate the CRCs on the buffer correctly 481 * once the changes have been replayed into the buffer. 482 * 483 * The type value is held in the upper 5 bits of the blf_flags field, which is 484 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down. 485 */ 486 #define XFS_BLFT_BITS 5 487 #define XFS_BLFT_SHIFT 11 488 #define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT) 489 490 enum xfs_blft { 491 XFS_BLFT_UNKNOWN_BUF = 0, 492 XFS_BLFT_UDQUOT_BUF, 493 XFS_BLFT_PDQUOT_BUF, 494 XFS_BLFT_GDQUOT_BUF, 495 XFS_BLFT_BTREE_BUF, 496 XFS_BLFT_AGF_BUF, 497 XFS_BLFT_AGFL_BUF, 498 XFS_BLFT_AGI_BUF, 499 XFS_BLFT_DINO_BUF, 500 XFS_BLFT_SYMLINK_BUF, 501 XFS_BLFT_DIR_BLOCK_BUF, 502 XFS_BLFT_DIR_DATA_BUF, 503 XFS_BLFT_DIR_FREE_BUF, 504 XFS_BLFT_DIR_LEAF1_BUF, 505 XFS_BLFT_DIR_LEAFN_BUF, 506 XFS_BLFT_DA_NODE_BUF, 507 XFS_BLFT_ATTR_LEAF_BUF, 508 XFS_BLFT_ATTR_RMT_BUF, 509 XFS_BLFT_SB_BUF, 510 XFS_BLFT_RTBITMAP_BUF, 511 XFS_BLFT_RTSUMMARY_BUF, 512 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS), 513 }; 514 515 static inline void 516 xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type) 517 { 518 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF); 519 blf->blf_flags &= ~XFS_BLFT_MASK; 520 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK); 521 } 522 523 static inline __uint16_t 524 xfs_blft_from_flags(struct xfs_buf_log_format *blf) 525 { 526 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; 527 } 528 529 /* 530 * EFI/EFD log format definitions 531 */ 532 typedef struct xfs_extent { 533 xfs_fsblock_t ext_start; 534 xfs_extlen_t ext_len; 535 } xfs_extent_t; 536 537 /* 538 * Since an xfs_extent_t has types (start:64, len: 32) 539 * there are different alignments on 32 bit and 64 bit kernels. 540 * So we provide the different variants for use by a 541 * conversion routine. 542 */ 543 typedef struct xfs_extent_32 { 544 __uint64_t ext_start; 545 __uint32_t ext_len; 546 } __attribute__((packed)) xfs_extent_32_t; 547 548 typedef struct xfs_extent_64 { 549 __uint64_t ext_start; 550 __uint32_t ext_len; 551 __uint32_t ext_pad; 552 } xfs_extent_64_t; 553 554 /* 555 * This is the structure used to lay out an efi log item in the 556 * log. The efi_extents field is a variable size array whose 557 * size is given by efi_nextents. 558 */ 559 typedef struct xfs_efi_log_format { 560 __uint16_t efi_type; /* efi log item type */ 561 __uint16_t efi_size; /* size of this item */ 562 __uint32_t efi_nextents; /* # extents to free */ 563 __uint64_t efi_id; /* efi identifier */ 564 xfs_extent_t efi_extents[1]; /* array of extents to free */ 565 } xfs_efi_log_format_t; 566 567 typedef struct xfs_efi_log_format_32 { 568 __uint16_t efi_type; /* efi log item type */ 569 __uint16_t efi_size; /* size of this item */ 570 __uint32_t efi_nextents; /* # extents to free */ 571 __uint64_t efi_id; /* efi identifier */ 572 xfs_extent_32_t efi_extents[1]; /* array of extents to free */ 573 } __attribute__((packed)) xfs_efi_log_format_32_t; 574 575 typedef struct xfs_efi_log_format_64 { 576 __uint16_t efi_type; /* efi log item type */ 577 __uint16_t efi_size; /* size of this item */ 578 __uint32_t efi_nextents; /* # extents to free */ 579 __uint64_t efi_id; /* efi identifier */ 580 xfs_extent_64_t efi_extents[1]; /* array of extents to free */ 581 } xfs_efi_log_format_64_t; 582 583 /* 584 * This is the structure used to lay out an efd log item in the 585 * log. The efd_extents array is a variable size array whose 586 * size is given by efd_nextents; 587 */ 588 typedef struct xfs_efd_log_format { 589 __uint16_t efd_type; /* efd log item type */ 590 __uint16_t efd_size; /* size of this item */ 591 __uint32_t efd_nextents; /* # of extents freed */ 592 __uint64_t efd_efi_id; /* id of corresponding efi */ 593 xfs_extent_t efd_extents[1]; /* array of extents freed */ 594 } xfs_efd_log_format_t; 595 596 typedef struct xfs_efd_log_format_32 { 597 __uint16_t efd_type; /* efd log item type */ 598 __uint16_t efd_size; /* size of this item */ 599 __uint32_t efd_nextents; /* # of extents freed */ 600 __uint64_t efd_efi_id; /* id of corresponding efi */ 601 xfs_extent_32_t efd_extents[1]; /* array of extents freed */ 602 } __attribute__((packed)) xfs_efd_log_format_32_t; 603 604 typedef struct xfs_efd_log_format_64 { 605 __uint16_t efd_type; /* efd log item type */ 606 __uint16_t efd_size; /* size of this item */ 607 __uint32_t efd_nextents; /* # of extents freed */ 608 __uint64_t efd_efi_id; /* id of corresponding efi */ 609 xfs_extent_64_t efd_extents[1]; /* array of extents freed */ 610 } xfs_efd_log_format_64_t; 611 612 /* 613 * RUI/RUD (reverse mapping) log format definitions 614 */ 615 struct xfs_map_extent { 616 __uint64_t me_owner; 617 __uint64_t me_startblock; 618 __uint64_t me_startoff; 619 __uint32_t me_len; 620 __uint32_t me_flags; 621 }; 622 623 /* rmap me_flags: upper bits are flags, lower byte is type code */ 624 #define XFS_RMAP_EXTENT_MAP 1 625 #define XFS_RMAP_EXTENT_UNMAP 3 626 #define XFS_RMAP_EXTENT_CONVERT 5 627 #define XFS_RMAP_EXTENT_ALLOC 7 628 #define XFS_RMAP_EXTENT_FREE 8 629 #define XFS_RMAP_EXTENT_TYPE_MASK 0xFF 630 631 #define XFS_RMAP_EXTENT_ATTR_FORK (1U << 31) 632 #define XFS_RMAP_EXTENT_BMBT_BLOCK (1U << 30) 633 #define XFS_RMAP_EXTENT_UNWRITTEN (1U << 29) 634 635 #define XFS_RMAP_EXTENT_FLAGS (XFS_RMAP_EXTENT_TYPE_MASK | \ 636 XFS_RMAP_EXTENT_ATTR_FORK | \ 637 XFS_RMAP_EXTENT_BMBT_BLOCK | \ 638 XFS_RMAP_EXTENT_UNWRITTEN) 639 640 /* 641 * This is the structure used to lay out an rui log item in the 642 * log. The rui_extents field is a variable size array whose 643 * size is given by rui_nextents. 644 */ 645 struct xfs_rui_log_format { 646 __uint16_t rui_type; /* rui log item type */ 647 __uint16_t rui_size; /* size of this item */ 648 __uint32_t rui_nextents; /* # extents to free */ 649 __uint64_t rui_id; /* rui identifier */ 650 struct xfs_map_extent rui_extents[1]; /* array of extents to rmap */ 651 }; 652 653 /* 654 * This is the structure used to lay out an rud log item in the 655 * log. The rud_extents array is a variable size array whose 656 * size is given by rud_nextents; 657 */ 658 struct xfs_rud_log_format { 659 __uint16_t rud_type; /* rud log item type */ 660 __uint16_t rud_size; /* size of this item */ 661 __uint32_t __pad; 662 __uint64_t rud_rui_id; /* id of corresponding rui */ 663 }; 664 665 /* 666 * Dquot Log format definitions. 667 * 668 * The first two fields must be the type and size fitting into 669 * 32 bits : log_recovery code assumes that. 670 */ 671 typedef struct xfs_dq_logformat { 672 __uint16_t qlf_type; /* dquot log item type */ 673 __uint16_t qlf_size; /* size of this item */ 674 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */ 675 __int64_t qlf_blkno; /* blkno of dquot buffer */ 676 __int32_t qlf_len; /* len of dquot buffer */ 677 __uint32_t qlf_boffset; /* off of dquot in buffer */ 678 } xfs_dq_logformat_t; 679 680 /* 681 * log format struct for QUOTAOFF records. 682 * The first two fields must be the type and size fitting into 683 * 32 bits : log_recovery code assumes that. 684 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer 685 * to the first and ensures that the first logitem is taken out of the AIL 686 * only when the last one is securely committed. 687 */ 688 typedef struct xfs_qoff_logformat { 689 unsigned short qf_type; /* quotaoff log item type */ 690 unsigned short qf_size; /* size of this item */ 691 unsigned int qf_flags; /* USR and/or GRP */ 692 char qf_pad[12]; /* padding for future */ 693 } xfs_qoff_logformat_t; 694 695 /* 696 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits. 697 */ 698 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */ 699 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */ 700 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */ 701 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */ 702 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ 703 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ 704 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ 705 706 /* 707 * Conversion to and from the combined OQUOTA flag (if necessary) 708 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk() 709 */ 710 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */ 711 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */ 712 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */ 713 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */ 714 715 #define XFS_ALL_QUOTA_ACCT \ 716 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) 717 #define XFS_ALL_QUOTA_ENFD \ 718 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD) 719 #define XFS_ALL_QUOTA_CHKD \ 720 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD) 721 722 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ 723 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ 724 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\ 725 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\ 726 XFS_PQUOTA_CHKD) 727 728 /* 729 * Inode create log item structure 730 * 731 * Log recovery assumes the first two entries are the type and size and they fit 732 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so 733 * decoding can be done correctly. 734 */ 735 struct xfs_icreate_log { 736 __uint16_t icl_type; /* type of log format structure */ 737 __uint16_t icl_size; /* size of log format structure */ 738 __be32 icl_ag; /* ag being allocated in */ 739 __be32 icl_agbno; /* start block of inode range */ 740 __be32 icl_count; /* number of inodes to initialise */ 741 __be32 icl_isize; /* size of inodes */ 742 __be32 icl_length; /* length of extent to initialise */ 743 __be32 icl_gen; /* inode generation number to use */ 744 }; 745 746 #endif /* __XFS_LOG_FORMAT_H__ */ 747