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_MAX 20 114 115 /* 116 * Flags to log operation header 117 * 118 * The first write of a new transaction will be preceded with a start 119 * record, XLOG_START_TRANS. Once a transaction is committed, a commit 120 * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into 121 * the remainder of the current active in-core log, it is split up into 122 * multiple regions. Each partial region will be marked with a 123 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS. 124 * 125 */ 126 #define XLOG_START_TRANS 0x01 /* Start a new transaction */ 127 #define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */ 128 #define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */ 129 #define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */ 130 #define XLOG_END_TRANS 0x10 /* End a continued transaction */ 131 #define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */ 132 133 134 typedef struct xlog_op_header { 135 __be32 oh_tid; /* transaction id of operation : 4 b */ 136 __be32 oh_len; /* bytes in data region : 4 b */ 137 __u8 oh_clientid; /* who sent me this : 1 b */ 138 __u8 oh_flags; /* : 1 b */ 139 __u16 oh_res2; /* 32 bit align : 2 b */ 140 } xlog_op_header_t; 141 142 /* valid values for h_fmt */ 143 #define XLOG_FMT_UNKNOWN 0 144 #define XLOG_FMT_LINUX_LE 1 145 #define XLOG_FMT_LINUX_BE 2 146 #define XLOG_FMT_IRIX_BE 3 147 148 /* our fmt */ 149 #ifdef XFS_NATIVE_HOST 150 #define XLOG_FMT XLOG_FMT_LINUX_BE 151 #else 152 #define XLOG_FMT XLOG_FMT_LINUX_LE 153 #endif 154 155 typedef struct xlog_rec_header { 156 __be32 h_magicno; /* log record (LR) identifier : 4 */ 157 __be32 h_cycle; /* write cycle of log : 4 */ 158 __be32 h_version; /* LR version : 4 */ 159 __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */ 160 __be64 h_lsn; /* lsn of this LR : 8 */ 161 __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */ 162 __le32 h_crc; /* crc of log record : 4 */ 163 __be32 h_prev_block; /* block number to previous LR : 4 */ 164 __be32 h_num_logops; /* number of log operations in this LR : 4 */ 165 __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; 166 /* new fields */ 167 __be32 h_fmt; /* format of log record : 4 */ 168 uuid_t h_fs_uuid; /* uuid of FS : 16 */ 169 __be32 h_size; /* iclog size : 4 */ 170 } xlog_rec_header_t; 171 172 typedef struct xlog_rec_ext_header { 173 __be32 xh_cycle; /* write cycle of log : 4 */ 174 __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */ 175 } xlog_rec_ext_header_t; 176 177 /* 178 * Quite misnamed, because this union lays out the actual on-disk log buffer. 179 */ 180 typedef union xlog_in_core2 { 181 xlog_rec_header_t hic_header; 182 xlog_rec_ext_header_t hic_xheader; 183 char hic_sector[XLOG_HEADER_SIZE]; 184 } xlog_in_core_2_t; 185 186 /* not an on-disk structure, but needed by log recovery in userspace */ 187 typedef struct xfs_log_iovec { 188 void *i_addr; /* beginning address of region */ 189 int i_len; /* length in bytes of region */ 190 uint i_type; /* type of region */ 191 } xfs_log_iovec_t; 192 193 194 /* 195 * Transaction Header definitions. 196 * 197 * This is the structure written in the log at the head of every transaction. It 198 * identifies the type and id of the transaction, and contains the number of 199 * items logged by the transaction so we know how many to expect during 200 * recovery. 201 * 202 * Do not change the below structure without redoing the code in 203 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans(). 204 */ 205 typedef struct xfs_trans_header { 206 uint th_magic; /* magic number */ 207 uint th_type; /* transaction type */ 208 __int32_t th_tid; /* transaction id (unused) */ 209 uint th_num_items; /* num items logged by trans */ 210 } xfs_trans_header_t; 211 212 #define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */ 213 214 /* 215 * The only type valid for th_type in CIL-enabled file system logs: 216 */ 217 #define XFS_TRANS_CHECKPOINT 40 218 219 /* 220 * Log item types. 221 */ 222 #define XFS_LI_EFI 0x1236 223 #define XFS_LI_EFD 0x1237 224 #define XFS_LI_IUNLINK 0x1238 225 #define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */ 226 #define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */ 227 #define XFS_LI_DQUOT 0x123d 228 #define XFS_LI_QUOTAOFF 0x123e 229 #define XFS_LI_ICREATE 0x123f 230 231 #define XFS_LI_TYPE_DESC \ 232 { XFS_LI_EFI, "XFS_LI_EFI" }, \ 233 { XFS_LI_EFD, "XFS_LI_EFD" }, \ 234 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \ 235 { XFS_LI_INODE, "XFS_LI_INODE" }, \ 236 { XFS_LI_BUF, "XFS_LI_BUF" }, \ 237 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \ 238 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \ 239 { XFS_LI_ICREATE, "XFS_LI_ICREATE" } 240 241 /* 242 * Inode Log Item Format definitions. 243 * 244 * This is the structure used to lay out an inode log item in the 245 * log. The size of the inline data/extents/b-tree root to be logged 246 * (if any) is indicated in the ilf_dsize field. Changes to this structure 247 * must be added on to the end. 248 */ 249 typedef struct xfs_inode_log_format { 250 __uint16_t ilf_type; /* inode log item type */ 251 __uint16_t ilf_size; /* size of this item */ 252 __uint32_t ilf_fields; /* flags for fields logged */ 253 __uint16_t ilf_asize; /* size of attr d/ext/root */ 254 __uint16_t ilf_dsize; /* size of data/ext/root */ 255 __uint64_t ilf_ino; /* inode number */ 256 union { 257 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 258 uuid_t ilfu_uuid; /* mount point value */ 259 } ilf_u; 260 __int64_t ilf_blkno; /* blkno of inode buffer */ 261 __int32_t ilf_len; /* len of inode buffer */ 262 __int32_t ilf_boffset; /* off of inode in buffer */ 263 } xfs_inode_log_format_t; 264 265 typedef struct xfs_inode_log_format_32 { 266 __uint16_t ilf_type; /* inode log item type */ 267 __uint16_t ilf_size; /* size of this item */ 268 __uint32_t ilf_fields; /* flags for fields logged */ 269 __uint16_t ilf_asize; /* size of attr d/ext/root */ 270 __uint16_t ilf_dsize; /* size of data/ext/root */ 271 __uint64_t ilf_ino; /* inode number */ 272 union { 273 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 274 uuid_t ilfu_uuid; /* mount point value */ 275 } ilf_u; 276 __int64_t ilf_blkno; /* blkno of inode buffer */ 277 __int32_t ilf_len; /* len of inode buffer */ 278 __int32_t ilf_boffset; /* off of inode in buffer */ 279 } __attribute__((packed)) xfs_inode_log_format_32_t; 280 281 typedef struct xfs_inode_log_format_64 { 282 __uint16_t ilf_type; /* inode log item type */ 283 __uint16_t ilf_size; /* size of this item */ 284 __uint32_t ilf_fields; /* flags for fields logged */ 285 __uint16_t ilf_asize; /* size of attr d/ext/root */ 286 __uint16_t ilf_dsize; /* size of data/ext/root */ 287 __uint32_t ilf_pad; /* pad for 64 bit boundary */ 288 __uint64_t ilf_ino; /* inode number */ 289 union { 290 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 291 uuid_t ilfu_uuid; /* mount point value */ 292 } ilf_u; 293 __int64_t ilf_blkno; /* blkno of inode buffer */ 294 __int32_t ilf_len; /* len of inode buffer */ 295 __int32_t ilf_boffset; /* off of inode in buffer */ 296 } xfs_inode_log_format_64_t; 297 298 299 /* 300 * Flags for xfs_trans_log_inode flags field. 301 */ 302 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */ 303 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ 304 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ 305 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ 306 #define XFS_ILOG_DEV 0x010 /* log the dev field */ 307 #define XFS_ILOG_UUID 0x020 /* log the uuid field */ 308 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ 309 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ 310 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ 311 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */ 312 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */ 313 314 315 /* 316 * The timestamps are dirty, but not necessarily anything else in the inode 317 * core. Unlike the other fields above this one must never make it to disk 318 * in the ilf_fields of the inode_log_format, but is purely store in-memory in 319 * ili_fields in the inode_log_item. 320 */ 321 #define XFS_ILOG_TIMESTAMP 0x4000 322 323 #define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 324 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \ 325 XFS_ILOG_UUID | XFS_ILOG_ADATA | \ 326 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \ 327 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER) 328 329 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 330 XFS_ILOG_DBROOT) 331 332 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 333 XFS_ILOG_ABROOT) 334 335 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \ 336 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \ 337 XFS_ILOG_DEV | XFS_ILOG_UUID | \ 338 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 339 XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP | \ 340 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER) 341 342 static inline int xfs_ilog_fbroot(int w) 343 { 344 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT); 345 } 346 347 static inline int xfs_ilog_fext(int w) 348 { 349 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT); 350 } 351 352 static inline int xfs_ilog_fdata(int w) 353 { 354 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA); 355 } 356 357 /* 358 * Incore version of the on-disk inode core structures. We log this directly 359 * into the journal in host CPU format (for better or worse) and as such 360 * directly mirrors the xfs_dinode structure as it must contain all the same 361 * information. 362 */ 363 typedef struct xfs_ictimestamp { 364 __int32_t t_sec; /* timestamp seconds */ 365 __int32_t t_nsec; /* timestamp nanoseconds */ 366 } xfs_ictimestamp_t; 367 368 /* 369 * Define the format of the inode core that is logged. This structure must be 370 * kept identical to struct xfs_dinode except for the endianness annotations. 371 */ 372 struct xfs_log_dinode { 373 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 374 __uint16_t di_mode; /* mode and type of file */ 375 __int8_t di_version; /* inode version */ 376 __int8_t di_format; /* format of di_c data */ 377 __uint8_t di_pad3[2]; /* unused in v2/3 inodes */ 378 __uint32_t di_uid; /* owner's user id */ 379 __uint32_t di_gid; /* owner's group id */ 380 __uint32_t di_nlink; /* number of links to file */ 381 __uint16_t di_projid_lo; /* lower part of owner's project id */ 382 __uint16_t di_projid_hi; /* higher part of owner's project id */ 383 __uint8_t di_pad[6]; /* unused, zeroed space */ 384 __uint16_t di_flushiter; /* incremented on flush */ 385 xfs_ictimestamp_t di_atime; /* time last accessed */ 386 xfs_ictimestamp_t di_mtime; /* time last modified */ 387 xfs_ictimestamp_t di_ctime; /* time created/inode modified */ 388 xfs_fsize_t di_size; /* number of bytes in file */ 389 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */ 390 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 391 xfs_extnum_t di_nextents; /* number of extents in data fork */ 392 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ 393 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 394 __int8_t di_aformat; /* format of attr fork's data */ 395 __uint32_t di_dmevmask; /* DMIG event mask */ 396 __uint16_t di_dmstate; /* DMIG state info */ 397 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 398 __uint32_t di_gen; /* generation number */ 399 400 /* di_next_unlinked is the only non-core field in the old dinode */ 401 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ 402 403 /* start of the extended dinode, writable fields */ 404 __uint32_t di_crc; /* CRC of the inode */ 405 __uint64_t di_changecount; /* number of attribute changes */ 406 xfs_lsn_t di_lsn; /* flush sequence */ 407 __uint64_t di_flags2; /* more random flags */ 408 __uint8_t di_pad2[16]; /* more padding for future expansion */ 409 410 /* fields only written to during inode creation */ 411 xfs_ictimestamp_t di_crtime; /* time created */ 412 xfs_ino_t di_ino; /* inode number */ 413 uuid_t di_uuid; /* UUID of the filesystem */ 414 415 /* structure must be padded to 64 bit alignment */ 416 }; 417 418 static inline uint xfs_log_dinode_size(int version) 419 { 420 if (version == 3) 421 return sizeof(struct xfs_log_dinode); 422 return offsetof(struct xfs_log_dinode, di_next_unlinked); 423 } 424 425 /* 426 * Buffer Log Format defintions 427 * 428 * These are the physical dirty bitmap defintions for the log format structure. 429 */ 430 #define XFS_BLF_CHUNK 128 431 #define XFS_BLF_SHIFT 7 432 #define BIT_TO_WORD_SHIFT 5 433 #define NBWORD (NBBY * sizeof(unsigned int)) 434 435 /* 436 * This flag indicates that the buffer contains on disk inodes 437 * and requires special recovery handling. 438 */ 439 #define XFS_BLF_INODE_BUF (1<<0) 440 441 /* 442 * This flag indicates that the buffer should not be replayed 443 * during recovery because its blocks are being freed. 444 */ 445 #define XFS_BLF_CANCEL (1<<1) 446 447 /* 448 * This flag indicates that the buffer contains on disk 449 * user or group dquots and may require special recovery handling. 450 */ 451 #define XFS_BLF_UDQUOT_BUF (1<<2) 452 #define XFS_BLF_PDQUOT_BUF (1<<3) 453 #define XFS_BLF_GDQUOT_BUF (1<<4) 454 455 /* 456 * This is the structure used to lay out a buf log item in the 457 * log. The data map describes which 128 byte chunks of the buffer 458 * have been logged. 459 */ 460 #define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) 461 462 typedef struct xfs_buf_log_format { 463 unsigned short blf_type; /* buf log item type indicator */ 464 unsigned short blf_size; /* size of this item */ 465 ushort blf_flags; /* misc state */ 466 ushort blf_len; /* number of blocks in this buf */ 467 __int64_t blf_blkno; /* starting blkno of this buf */ 468 unsigned int blf_map_size; /* used size of data bitmap in words */ 469 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */ 470 } xfs_buf_log_format_t; 471 472 /* 473 * All buffers now need to tell recovery where the magic number 474 * is so that it can verify and calculate the CRCs on the buffer correctly 475 * once the changes have been replayed into the buffer. 476 * 477 * The type value is held in the upper 5 bits of the blf_flags field, which is 478 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down. 479 */ 480 #define XFS_BLFT_BITS 5 481 #define XFS_BLFT_SHIFT 11 482 #define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT) 483 484 enum xfs_blft { 485 XFS_BLFT_UNKNOWN_BUF = 0, 486 XFS_BLFT_UDQUOT_BUF, 487 XFS_BLFT_PDQUOT_BUF, 488 XFS_BLFT_GDQUOT_BUF, 489 XFS_BLFT_BTREE_BUF, 490 XFS_BLFT_AGF_BUF, 491 XFS_BLFT_AGFL_BUF, 492 XFS_BLFT_AGI_BUF, 493 XFS_BLFT_DINO_BUF, 494 XFS_BLFT_SYMLINK_BUF, 495 XFS_BLFT_DIR_BLOCK_BUF, 496 XFS_BLFT_DIR_DATA_BUF, 497 XFS_BLFT_DIR_FREE_BUF, 498 XFS_BLFT_DIR_LEAF1_BUF, 499 XFS_BLFT_DIR_LEAFN_BUF, 500 XFS_BLFT_DA_NODE_BUF, 501 XFS_BLFT_ATTR_LEAF_BUF, 502 XFS_BLFT_ATTR_RMT_BUF, 503 XFS_BLFT_SB_BUF, 504 XFS_BLFT_RTBITMAP_BUF, 505 XFS_BLFT_RTSUMMARY_BUF, 506 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS), 507 }; 508 509 static inline void 510 xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type) 511 { 512 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF); 513 blf->blf_flags &= ~XFS_BLFT_MASK; 514 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK); 515 } 516 517 static inline __uint16_t 518 xfs_blft_from_flags(struct xfs_buf_log_format *blf) 519 { 520 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; 521 } 522 523 /* 524 * EFI/EFD log format definitions 525 */ 526 typedef struct xfs_extent { 527 xfs_fsblock_t ext_start; 528 xfs_extlen_t ext_len; 529 } xfs_extent_t; 530 531 /* 532 * Since an xfs_extent_t has types (start:64, len: 32) 533 * there are different alignments on 32 bit and 64 bit kernels. 534 * So we provide the different variants for use by a 535 * conversion routine. 536 */ 537 typedef struct xfs_extent_32 { 538 __uint64_t ext_start; 539 __uint32_t ext_len; 540 } __attribute__((packed)) xfs_extent_32_t; 541 542 typedef struct xfs_extent_64 { 543 __uint64_t ext_start; 544 __uint32_t ext_len; 545 __uint32_t ext_pad; 546 } xfs_extent_64_t; 547 548 /* 549 * This is the structure used to lay out an efi log item in the 550 * log. The efi_extents field is a variable size array whose 551 * size is given by efi_nextents. 552 */ 553 typedef struct xfs_efi_log_format { 554 __uint16_t efi_type; /* efi log item type */ 555 __uint16_t efi_size; /* size of this item */ 556 __uint32_t efi_nextents; /* # extents to free */ 557 __uint64_t efi_id; /* efi identifier */ 558 xfs_extent_t efi_extents[1]; /* array of extents to free */ 559 } xfs_efi_log_format_t; 560 561 typedef struct xfs_efi_log_format_32 { 562 __uint16_t efi_type; /* efi log item type */ 563 __uint16_t efi_size; /* size of this item */ 564 __uint32_t efi_nextents; /* # extents to free */ 565 __uint64_t efi_id; /* efi identifier */ 566 xfs_extent_32_t efi_extents[1]; /* array of extents to free */ 567 } __attribute__((packed)) xfs_efi_log_format_32_t; 568 569 typedef struct xfs_efi_log_format_64 { 570 __uint16_t efi_type; /* efi log item type */ 571 __uint16_t efi_size; /* size of this item */ 572 __uint32_t efi_nextents; /* # extents to free */ 573 __uint64_t efi_id; /* efi identifier */ 574 xfs_extent_64_t efi_extents[1]; /* array of extents to free */ 575 } xfs_efi_log_format_64_t; 576 577 /* 578 * This is the structure used to lay out an efd log item in the 579 * log. The efd_extents array is a variable size array whose 580 * size is given by efd_nextents; 581 */ 582 typedef struct xfs_efd_log_format { 583 __uint16_t efd_type; /* efd log item type */ 584 __uint16_t efd_size; /* size of this item */ 585 __uint32_t efd_nextents; /* # of extents freed */ 586 __uint64_t efd_efi_id; /* id of corresponding efi */ 587 xfs_extent_t efd_extents[1]; /* array of extents freed */ 588 } xfs_efd_log_format_t; 589 590 typedef struct xfs_efd_log_format_32 { 591 __uint16_t efd_type; /* efd log item type */ 592 __uint16_t efd_size; /* size of this item */ 593 __uint32_t efd_nextents; /* # of extents freed */ 594 __uint64_t efd_efi_id; /* id of corresponding efi */ 595 xfs_extent_32_t efd_extents[1]; /* array of extents freed */ 596 } __attribute__((packed)) xfs_efd_log_format_32_t; 597 598 typedef struct xfs_efd_log_format_64 { 599 __uint16_t efd_type; /* efd log item type */ 600 __uint16_t efd_size; /* size of this item */ 601 __uint32_t efd_nextents; /* # of extents freed */ 602 __uint64_t efd_efi_id; /* id of corresponding efi */ 603 xfs_extent_64_t efd_extents[1]; /* array of extents freed */ 604 } xfs_efd_log_format_64_t; 605 606 /* 607 * Dquot Log format definitions. 608 * 609 * The first two fields must be the type and size fitting into 610 * 32 bits : log_recovery code assumes that. 611 */ 612 typedef struct xfs_dq_logformat { 613 __uint16_t qlf_type; /* dquot log item type */ 614 __uint16_t qlf_size; /* size of this item */ 615 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */ 616 __int64_t qlf_blkno; /* blkno of dquot buffer */ 617 __int32_t qlf_len; /* len of dquot buffer */ 618 __uint32_t qlf_boffset; /* off of dquot in buffer */ 619 } xfs_dq_logformat_t; 620 621 /* 622 * log format struct for QUOTAOFF records. 623 * The first two fields must be the type and size fitting into 624 * 32 bits : log_recovery code assumes that. 625 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer 626 * to the first and ensures that the first logitem is taken out of the AIL 627 * only when the last one is securely committed. 628 */ 629 typedef struct xfs_qoff_logformat { 630 unsigned short qf_type; /* quotaoff log item type */ 631 unsigned short qf_size; /* size of this item */ 632 unsigned int qf_flags; /* USR and/or GRP */ 633 char qf_pad[12]; /* padding for future */ 634 } xfs_qoff_logformat_t; 635 636 /* 637 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits. 638 */ 639 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */ 640 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */ 641 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */ 642 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */ 643 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ 644 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ 645 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ 646 647 /* 648 * Conversion to and from the combined OQUOTA flag (if necessary) 649 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk() 650 */ 651 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */ 652 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */ 653 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */ 654 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */ 655 656 #define XFS_ALL_QUOTA_ACCT \ 657 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) 658 #define XFS_ALL_QUOTA_ENFD \ 659 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD) 660 #define XFS_ALL_QUOTA_CHKD \ 661 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD) 662 663 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ 664 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ 665 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\ 666 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\ 667 XFS_PQUOTA_CHKD) 668 669 /* 670 * Inode create log item structure 671 * 672 * Log recovery assumes the first two entries are the type and size and they fit 673 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so 674 * decoding can be done correctly. 675 */ 676 struct xfs_icreate_log { 677 __uint16_t icl_type; /* type of log format structure */ 678 __uint16_t icl_size; /* size of log format structure */ 679 __be32 icl_ag; /* ag being allocated in */ 680 __be32 icl_agbno; /* start block of inode range */ 681 __be32 icl_count; /* number of inodes to initialise */ 682 __be32 icl_isize; /* size of inodes */ 683 __be32 icl_length; /* length of extent to initialise */ 684 __be32 icl_gen; /* inode generation number to use */ 685 }; 686 687 #endif /* __XFS_LOG_FORMAT_H__ */ 688