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 21struct xfs_mount; 22struct 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 */ 34typedef __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 72static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block) 73{ 74 return ((xfs_lsn_t)cycle << 32) | block; 75} 76 77static 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 134typedef 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 155typedef 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 172typedef 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 */ 180typedef 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 */ 187typedef 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 */ 205typedef 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 * Log item types. 216 */ 217#define XFS_LI_EFI 0x1236 218#define XFS_LI_EFD 0x1237 219#define XFS_LI_IUNLINK 0x1238 220#define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */ 221#define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */ 222#define XFS_LI_DQUOT 0x123d 223#define XFS_LI_QUOTAOFF 0x123e 224#define XFS_LI_ICREATE 0x123f 225 226#define XFS_LI_TYPE_DESC \ 227 { XFS_LI_EFI, "XFS_LI_EFI" }, \ 228 { XFS_LI_EFD, "XFS_LI_EFD" }, \ 229 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \ 230 { XFS_LI_INODE, "XFS_LI_INODE" }, \ 231 { XFS_LI_BUF, "XFS_LI_BUF" }, \ 232 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \ 233 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \ 234 { XFS_LI_ICREATE, "XFS_LI_ICREATE" } 235 236/* 237 * Inode Log Item Format definitions. 238 * 239 * This is the structure used to lay out an inode log item in the 240 * log. The size of the inline data/extents/b-tree root to be logged 241 * (if any) is indicated in the ilf_dsize field. Changes to this structure 242 * must be added on to the end. 243 */ 244typedef struct xfs_inode_log_format { 245 __uint16_t ilf_type; /* inode log item type */ 246 __uint16_t ilf_size; /* size of this item */ 247 __uint32_t ilf_fields; /* flags for fields logged */ 248 __uint16_t ilf_asize; /* size of attr d/ext/root */ 249 __uint16_t ilf_dsize; /* size of data/ext/root */ 250 __uint64_t ilf_ino; /* inode number */ 251 union { 252 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 253 uuid_t ilfu_uuid; /* mount point value */ 254 } ilf_u; 255 __int64_t ilf_blkno; /* blkno of inode buffer */ 256 __int32_t ilf_len; /* len of inode buffer */ 257 __int32_t ilf_boffset; /* off of inode in buffer */ 258} xfs_inode_log_format_t; 259 260typedef struct xfs_inode_log_format_32 { 261 __uint16_t ilf_type; /* inode log item type */ 262 __uint16_t ilf_size; /* size of this item */ 263 __uint32_t ilf_fields; /* flags for fields logged */ 264 __uint16_t ilf_asize; /* size of attr d/ext/root */ 265 __uint16_t ilf_dsize; /* size of data/ext/root */ 266 __uint64_t ilf_ino; /* inode number */ 267 union { 268 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 269 uuid_t ilfu_uuid; /* mount point value */ 270 } ilf_u; 271 __int64_t ilf_blkno; /* blkno of inode buffer */ 272 __int32_t ilf_len; /* len of inode buffer */ 273 __int32_t ilf_boffset; /* off of inode in buffer */ 274} __attribute__((packed)) xfs_inode_log_format_32_t; 275 276typedef struct xfs_inode_log_format_64 { 277 __uint16_t ilf_type; /* inode log item type */ 278 __uint16_t ilf_size; /* size of this item */ 279 __uint32_t ilf_fields; /* flags for fields logged */ 280 __uint16_t ilf_asize; /* size of attr d/ext/root */ 281 __uint16_t ilf_dsize; /* size of data/ext/root */ 282 __uint32_t ilf_pad; /* pad for 64 bit boundary */ 283 __uint64_t ilf_ino; /* inode number */ 284 union { 285 __uint32_t ilfu_rdev; /* rdev value for dev inode*/ 286 uuid_t ilfu_uuid; /* mount point value */ 287 } ilf_u; 288 __int64_t ilf_blkno; /* blkno of inode buffer */ 289 __int32_t ilf_len; /* len of inode buffer */ 290 __int32_t ilf_boffset; /* off of inode in buffer */ 291} xfs_inode_log_format_64_t; 292 293/* 294 * Flags for xfs_trans_log_inode flags field. 295 */ 296#define XFS_ILOG_CORE 0x001 /* log standard inode fields */ 297#define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ 298#define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ 299#define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ 300#define XFS_ILOG_DEV 0x010 /* log the dev field */ 301#define XFS_ILOG_UUID 0x020 /* log the uuid field */ 302#define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ 303#define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ 304#define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ 305#define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */ 306#define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */ 307 308 309/* 310 * The timestamps are dirty, but not necessarily anything else in the inode 311 * core. Unlike the other fields above this one must never make it to disk 312 * in the ilf_fields of the inode_log_format, but is purely store in-memory in 313 * ili_fields in the inode_log_item. 314 */ 315#define XFS_ILOG_TIMESTAMP 0x4000 316 317#define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 318 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \ 319 XFS_ILOG_UUID | XFS_ILOG_ADATA | \ 320 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \ 321 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER) 322 323#define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ 324 XFS_ILOG_DBROOT) 325 326#define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 327 XFS_ILOG_ABROOT) 328 329#define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \ 330 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \ 331 XFS_ILOG_DEV | XFS_ILOG_UUID | \ 332 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \ 333 XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP | \ 334 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER) 335 336static inline int xfs_ilog_fbroot(int w) 337{ 338 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT); 339} 340 341static inline int xfs_ilog_fext(int w) 342{ 343 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT); 344} 345 346static inline int xfs_ilog_fdata(int w) 347{ 348 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA); 349} 350 351/* 352 * Incore version of the on-disk inode core structures. We log this directly 353 * into the journal in host CPU format (for better or worse) and as such 354 * directly mirrors the xfs_dinode structure as it must contain all the same 355 * information. 356 */ 357typedef struct xfs_ictimestamp { 358 __int32_t t_sec; /* timestamp seconds */ 359 __int32_t t_nsec; /* timestamp nanoseconds */ 360} xfs_ictimestamp_t; 361 362/* 363 * NOTE: This structure must be kept identical to struct xfs_dinode 364 * except for the endianness annotations. 365 */ 366typedef struct xfs_icdinode { 367 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 368 __uint16_t di_mode; /* mode and type of file */ 369 __int8_t di_version; /* inode version */ 370 __int8_t di_format; /* format of di_c data */ 371 __uint16_t di_onlink; /* old number of links to file */ 372 __uint32_t di_uid; /* owner's user id */ 373 __uint32_t di_gid; /* owner's group id */ 374 __uint32_t di_nlink; /* number of links to file */ 375 __uint16_t di_projid_lo; /* lower part of owner's project id */ 376 __uint16_t di_projid_hi; /* higher part of owner's project id */ 377 __uint8_t di_pad[6]; /* unused, zeroed space */ 378 __uint16_t di_flushiter; /* incremented on flush */ 379 xfs_ictimestamp_t di_atime; /* time last accessed */ 380 xfs_ictimestamp_t di_mtime; /* time last modified */ 381 xfs_ictimestamp_t di_ctime; /* time created/inode modified */ 382 xfs_fsize_t di_size; /* number of bytes in file */ 383 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */ 384 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 385 xfs_extnum_t di_nextents; /* number of extents in data fork */ 386 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ 387 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 388 __int8_t di_aformat; /* format of attr fork's data */ 389 __uint32_t di_dmevmask; /* DMIG event mask */ 390 __uint16_t di_dmstate; /* DMIG state info */ 391 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 392 __uint32_t di_gen; /* generation number */ 393 394 /* di_next_unlinked is the only non-core field in the old dinode */ 395 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ 396 397 /* start of the extended dinode, writable fields */ 398 __uint32_t di_crc; /* CRC of the inode */ 399 __uint64_t di_changecount; /* number of attribute changes */ 400 xfs_lsn_t di_lsn; /* flush sequence */ 401 __uint64_t di_flags2; /* more random flags */ 402 __uint8_t di_pad2[16]; /* more padding for future expansion */ 403 404 /* fields only written to during inode creation */ 405 xfs_ictimestamp_t di_crtime; /* time created */ 406 xfs_ino_t di_ino; /* inode number */ 407 uuid_t di_uuid; /* UUID of the filesystem */ 408 409 /* structure must be padded to 64 bit alignment */ 410} xfs_icdinode_t; 411 412static inline uint xfs_icdinode_size(int version) 413{ 414 if (version == 3) 415 return sizeof(struct xfs_icdinode); 416 return offsetof(struct xfs_icdinode, di_next_unlinked); 417} 418 419/* 420 * Buffer Log Format defintions 421 * 422 * These are the physical dirty bitmap defintions for the log format structure. 423 */ 424#define XFS_BLF_CHUNK 128 425#define XFS_BLF_SHIFT 7 426#define BIT_TO_WORD_SHIFT 5 427#define NBWORD (NBBY * sizeof(unsigned int)) 428 429/* 430 * This flag indicates that the buffer contains on disk inodes 431 * and requires special recovery handling. 432 */ 433#define XFS_BLF_INODE_BUF (1<<0) 434 435/* 436 * This flag indicates that the buffer should not be replayed 437 * during recovery because its blocks are being freed. 438 */ 439#define XFS_BLF_CANCEL (1<<1) 440 441/* 442 * This flag indicates that the buffer contains on disk 443 * user or group dquots and may require special recovery handling. 444 */ 445#define XFS_BLF_UDQUOT_BUF (1<<2) 446#define XFS_BLF_PDQUOT_BUF (1<<3) 447#define XFS_BLF_GDQUOT_BUF (1<<4) 448 449/* 450 * This is the structure used to lay out a buf log item in the 451 * log. The data map describes which 128 byte chunks of the buffer 452 * have been logged. 453 */ 454#define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) 455 456typedef struct xfs_buf_log_format { 457 unsigned short blf_type; /* buf log item type indicator */ 458 unsigned short blf_size; /* size of this item */ 459 ushort blf_flags; /* misc state */ 460 ushort blf_len; /* number of blocks in this buf */ 461 __int64_t blf_blkno; /* starting blkno of this buf */ 462 unsigned int blf_map_size; /* used size of data bitmap in words */ 463 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */ 464} xfs_buf_log_format_t; 465 466/* 467 * All buffers now need to tell recovery where the magic number 468 * is so that it can verify and calculate the CRCs on the buffer correctly 469 * once the changes have been replayed into the buffer. 470 * 471 * The type value is held in the upper 5 bits of the blf_flags field, which is 472 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down. 473 */ 474#define XFS_BLFT_BITS 5 475#define XFS_BLFT_SHIFT 11 476#define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT) 477 478enum xfs_blft { 479 XFS_BLFT_UNKNOWN_BUF = 0, 480 XFS_BLFT_UDQUOT_BUF, 481 XFS_BLFT_PDQUOT_BUF, 482 XFS_BLFT_GDQUOT_BUF, 483 XFS_BLFT_BTREE_BUF, 484 XFS_BLFT_AGF_BUF, 485 XFS_BLFT_AGFL_BUF, 486 XFS_BLFT_AGI_BUF, 487 XFS_BLFT_DINO_BUF, 488 XFS_BLFT_SYMLINK_BUF, 489 XFS_BLFT_DIR_BLOCK_BUF, 490 XFS_BLFT_DIR_DATA_BUF, 491 XFS_BLFT_DIR_FREE_BUF, 492 XFS_BLFT_DIR_LEAF1_BUF, 493 XFS_BLFT_DIR_LEAFN_BUF, 494 XFS_BLFT_DA_NODE_BUF, 495 XFS_BLFT_ATTR_LEAF_BUF, 496 XFS_BLFT_ATTR_RMT_BUF, 497 XFS_BLFT_SB_BUF, 498 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS), 499}; 500 501static inline void 502xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type) 503{ 504 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF); 505 blf->blf_flags &= ~XFS_BLFT_MASK; 506 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK); 507} 508 509static inline __uint16_t 510xfs_blft_from_flags(struct xfs_buf_log_format *blf) 511{ 512 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; 513} 514 515/* 516 * EFI/EFD log format definitions 517 */ 518typedef struct xfs_extent { 519 xfs_fsblock_t ext_start; 520 xfs_extlen_t ext_len; 521} xfs_extent_t; 522 523/* 524 * Since an xfs_extent_t has types (start:64, len: 32) 525 * there are different alignments on 32 bit and 64 bit kernels. 526 * So we provide the different variants for use by a 527 * conversion routine. 528 */ 529typedef struct xfs_extent_32 { 530 __uint64_t ext_start; 531 __uint32_t ext_len; 532} __attribute__((packed)) xfs_extent_32_t; 533 534typedef struct xfs_extent_64 { 535 __uint64_t ext_start; 536 __uint32_t ext_len; 537 __uint32_t ext_pad; 538} xfs_extent_64_t; 539 540/* 541 * This is the structure used to lay out an efi log item in the 542 * log. The efi_extents field is a variable size array whose 543 * size is given by efi_nextents. 544 */ 545typedef struct xfs_efi_log_format { 546 __uint16_t efi_type; /* efi log item type */ 547 __uint16_t efi_size; /* size of this item */ 548 __uint32_t efi_nextents; /* # extents to free */ 549 __uint64_t efi_id; /* efi identifier */ 550 xfs_extent_t efi_extents[1]; /* array of extents to free */ 551} xfs_efi_log_format_t; 552 553typedef struct xfs_efi_log_format_32 { 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_32_t efi_extents[1]; /* array of extents to free */ 559} __attribute__((packed)) xfs_efi_log_format_32_t; 560 561typedef struct xfs_efi_log_format_64 { 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_64_t efi_extents[1]; /* array of extents to free */ 567} xfs_efi_log_format_64_t; 568 569/* 570 * This is the structure used to lay out an efd log item in the 571 * log. The efd_extents array is a variable size array whose 572 * size is given by efd_nextents; 573 */ 574typedef struct xfs_efd_log_format { 575 __uint16_t efd_type; /* efd log item type */ 576 __uint16_t efd_size; /* size of this item */ 577 __uint32_t efd_nextents; /* # of extents freed */ 578 __uint64_t efd_efi_id; /* id of corresponding efi */ 579 xfs_extent_t efd_extents[1]; /* array of extents freed */ 580} xfs_efd_log_format_t; 581 582typedef struct xfs_efd_log_format_32 { 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_32_t efd_extents[1]; /* array of extents freed */ 588} __attribute__((packed)) xfs_efd_log_format_32_t; 589 590typedef struct xfs_efd_log_format_64 { 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_64_t efd_extents[1]; /* array of extents freed */ 596} xfs_efd_log_format_64_t; 597 598/* 599 * Dquot Log format definitions. 600 * 601 * The first two fields must be the type and size fitting into 602 * 32 bits : log_recovery code assumes that. 603 */ 604typedef struct xfs_dq_logformat { 605 __uint16_t qlf_type; /* dquot log item type */ 606 __uint16_t qlf_size; /* size of this item */ 607 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */ 608 __int64_t qlf_blkno; /* blkno of dquot buffer */ 609 __int32_t qlf_len; /* len of dquot buffer */ 610 __uint32_t qlf_boffset; /* off of dquot in buffer */ 611} xfs_dq_logformat_t; 612 613/* 614 * log format struct for QUOTAOFF records. 615 * The first two fields must be the type and size fitting into 616 * 32 bits : log_recovery code assumes that. 617 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer 618 * to the first and ensures that the first logitem is taken out of the AIL 619 * only when the last one is securely committed. 620 */ 621typedef struct xfs_qoff_logformat { 622 unsigned short qf_type; /* quotaoff log item type */ 623 unsigned short qf_size; /* size of this item */ 624 unsigned int qf_flags; /* USR and/or GRP */ 625 char qf_pad[12]; /* padding for future */ 626} xfs_qoff_logformat_t; 627 628/* 629 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits. 630 */ 631#define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */ 632#define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */ 633#define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */ 634#define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */ 635#define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */ 636#define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */ 637#define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */ 638 639/* 640 * Conversion to and from the combined OQUOTA flag (if necessary) 641 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk() 642 */ 643#define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */ 644#define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */ 645#define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */ 646#define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */ 647 648#define XFS_ALL_QUOTA_ACCT \ 649 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT) 650#define XFS_ALL_QUOTA_ENFD \ 651 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD) 652#define XFS_ALL_QUOTA_CHKD \ 653 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD) 654 655#define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\ 656 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\ 657 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\ 658 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\ 659 XFS_PQUOTA_CHKD) 660 661/* 662 * Inode create log item structure 663 * 664 * Log recovery assumes the first two entries are the type and size and they fit 665 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so 666 * decoding can be done correctly. 667 */ 668struct xfs_icreate_log { 669 __uint16_t icl_type; /* type of log format structure */ 670 __uint16_t icl_size; /* size of log format structure */ 671 __be32 icl_ag; /* ag being allocated in */ 672 __be32 icl_agbno; /* start block of inode range */ 673 __be32 icl_count; /* number of inodes to initialise */ 674 __be32 icl_isize; /* size of inodes */ 675 __be32 icl_length; /* length of extent to initialise */ 676 __be32 icl_gen; /* inode generation number to use */ 677}; 678 679#endif /* __XFS_LOG_FORMAT_H__ */ 680