1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
6 #ifndef __XFS_LOG_FORMAT_H__
7 #define __XFS_LOG_FORMAT_H__
13 * On-disk Log Format definitions.
15 * This file contains all the on-disk format definitions used within the log. It
16 * includes the physical log structure itself, as well as all the log item
17 * format structures that are written into the log and intepreted by log
18 * recovery. We start with the physical log format definitions, and then work
19 * through all the log items definitions and everything they encode into the
22 typedef uint32_t xlog_tid_t;
24 #define XLOG_MIN_ICLOGS 2
25 #define XLOG_MAX_ICLOGS 8
26 #define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */
27 #define XLOG_VERSION_1 1
28 #define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */
29 #define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2)
30 #define XLOG_MIN_RECORD_BSIZE (16*1024) /* eventually 32k */
31 #define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */
32 #define XLOG_MAX_RECORD_BSIZE (256*1024)
33 #define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */
34 #define XLOG_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */
35 #define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */
36 #define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */
37 #define XLOG_BTOLSUNIT(log, b) (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \
38 (log)->l_mp->m_sb.sb_logsunit)
39 #define XLOG_LSUNITTOB(log, su) ((su) * (log)->l_mp->m_sb.sb_logsunit)
41 #define XLOG_HEADER_SIZE 512
43 /* Minimum number of transactions that must fit in the log (defined by mkfs) */
44 #define XFS_MIN_LOG_FACTOR 3
46 #define XLOG_REC_SHIFT(log) \
47 BTOBB(1 << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
48 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
49 #define XLOG_TOTAL_REC_SHIFT(log) \
50 BTOBB(XLOG_MAX_ICLOGS << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
51 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
54 #define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
55 #define BLOCK_LSN(lsn) ((uint)(lsn))
57 /* this is used in a spot where we might otherwise double-endian-flip */
58 #define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0])
60 static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block)
62 return ((xfs_lsn_t)cycle << 32) | block;
65 static inline uint xlog_get_cycle(char *ptr)
67 if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM)
68 return be32_to_cpu(*((__be32 *)ptr + 1));
70 return be32_to_cpu(*(__be32 *)ptr);
74 #define XFS_TRANSACTION 0x69
75 #define XFS_VOLUME 0x2
78 #define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */
80 /* Region types for iovec's i_type */
81 #define XLOG_REG_TYPE_BFORMAT 1
82 #define XLOG_REG_TYPE_BCHUNK 2
83 #define XLOG_REG_TYPE_EFI_FORMAT 3
84 #define XLOG_REG_TYPE_EFD_FORMAT 4
85 #define XLOG_REG_TYPE_IFORMAT 5
86 #define XLOG_REG_TYPE_ICORE 6
87 #define XLOG_REG_TYPE_IEXT 7
88 #define XLOG_REG_TYPE_IBROOT 8
89 #define XLOG_REG_TYPE_ILOCAL 9
90 #define XLOG_REG_TYPE_IATTR_EXT 10
91 #define XLOG_REG_TYPE_IATTR_BROOT 11
92 #define XLOG_REG_TYPE_IATTR_LOCAL 12
93 #define XLOG_REG_TYPE_QFORMAT 13
94 #define XLOG_REG_TYPE_DQUOT 14
95 #define XLOG_REG_TYPE_QUOTAOFF 15
96 #define XLOG_REG_TYPE_LRHEADER 16
97 #define XLOG_REG_TYPE_UNMOUNT 17
98 #define XLOG_REG_TYPE_COMMIT 18
99 #define XLOG_REG_TYPE_TRANSHDR 19
100 #define XLOG_REG_TYPE_ICREATE 20
101 #define XLOG_REG_TYPE_RUI_FORMAT 21
102 #define XLOG_REG_TYPE_RUD_FORMAT 22
103 #define XLOG_REG_TYPE_CUI_FORMAT 23
104 #define XLOG_REG_TYPE_CUD_FORMAT 24
105 #define XLOG_REG_TYPE_BUI_FORMAT 25
106 #define XLOG_REG_TYPE_BUD_FORMAT 26
107 #define XLOG_REG_TYPE_MAX 26
110 * Flags to log operation header
112 * The first write of a new transaction will be preceded with a start
113 * record, XLOG_START_TRANS. Once a transaction is committed, a commit
114 * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into
115 * the remainder of the current active in-core log, it is split up into
116 * multiple regions. Each partial region will be marked with a
117 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS.
120 #define XLOG_START_TRANS 0x01 /* Start a new transaction */
121 #define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */
122 #define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */
123 #define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */
124 #define XLOG_END_TRANS 0x10 /* End a continued transaction */
125 #define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */
128 typedef struct xlog_op_header {
129 __be32 oh_tid; /* transaction id of operation : 4 b */
130 __be32 oh_len; /* bytes in data region : 4 b */
131 __u8 oh_clientid; /* who sent me this : 1 b */
132 __u8 oh_flags; /* : 1 b */
133 __u16 oh_res2; /* 32 bit align : 2 b */
136 /* valid values for h_fmt */
137 #define XLOG_FMT_UNKNOWN 0
138 #define XLOG_FMT_LINUX_LE 1
139 #define XLOG_FMT_LINUX_BE 2
140 #define XLOG_FMT_IRIX_BE 3
143 #ifdef XFS_NATIVE_HOST
144 #define XLOG_FMT XLOG_FMT_LINUX_BE
146 #define XLOG_FMT XLOG_FMT_LINUX_LE
149 typedef struct xlog_rec_header {
150 __be32 h_magicno; /* log record (LR) identifier : 4 */
151 __be32 h_cycle; /* write cycle of log : 4 */
152 __be32 h_version; /* LR version : 4 */
153 __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */
154 __be64 h_lsn; /* lsn of this LR : 8 */
155 __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */
156 __le32 h_crc; /* crc of log record : 4 */
157 __be32 h_prev_block; /* block number to previous LR : 4 */
158 __be32 h_num_logops; /* number of log operations in this LR : 4 */
159 __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE];
161 __be32 h_fmt; /* format of log record : 4 */
162 uuid_t h_fs_uuid; /* uuid of FS : 16 */
163 __be32 h_size; /* iclog size : 4 */
166 typedef struct xlog_rec_ext_header {
167 __be32 xh_cycle; /* write cycle of log : 4 */
168 __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */
169 } xlog_rec_ext_header_t;
172 * Quite misnamed, because this union lays out the actual on-disk log buffer.
174 typedef union xlog_in_core2 {
175 xlog_rec_header_t hic_header;
176 xlog_rec_ext_header_t hic_xheader;
177 char hic_sector[XLOG_HEADER_SIZE];
180 /* not an on-disk structure, but needed by log recovery in userspace */
181 typedef struct xfs_log_iovec {
182 void *i_addr; /* beginning address of region */
183 int i_len; /* length in bytes of region */
184 uint i_type; /* type of region */
189 * Transaction Header definitions.
191 * This is the structure written in the log at the head of every transaction. It
192 * identifies the type and id of the transaction, and contains the number of
193 * items logged by the transaction so we know how many to expect during
196 * Do not change the below structure without redoing the code in
197 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
199 typedef struct xfs_trans_header {
200 uint th_magic; /* magic number */
201 uint th_type; /* transaction type */
202 int32_t th_tid; /* transaction id (unused) */
203 uint th_num_items; /* num items logged by trans */
204 } xfs_trans_header_t;
206 #define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */
209 * The only type valid for th_type in CIL-enabled file system logs:
211 #define XFS_TRANS_CHECKPOINT 40
216 #define XFS_LI_EFI 0x1236
217 #define XFS_LI_EFD 0x1237
218 #define XFS_LI_IUNLINK 0x1238
219 #define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */
220 #define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */
221 #define XFS_LI_DQUOT 0x123d
222 #define XFS_LI_QUOTAOFF 0x123e
223 #define XFS_LI_ICREATE 0x123f
224 #define XFS_LI_RUI 0x1240 /* rmap update intent */
225 #define XFS_LI_RUD 0x1241
226 #define XFS_LI_CUI 0x1242 /* refcount update intent */
227 #define XFS_LI_CUD 0x1243
228 #define XFS_LI_BUI 0x1244 /* bmbt update intent */
229 #define XFS_LI_BUD 0x1245
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 { XFS_LI_RUI, "XFS_LI_RUI" }, \
241 { XFS_LI_RUD, "XFS_LI_RUD" }, \
242 { XFS_LI_CUI, "XFS_LI_CUI" }, \
243 { XFS_LI_CUD, "XFS_LI_CUD" }, \
244 { XFS_LI_BUI, "XFS_LI_BUI" }, \
245 { XFS_LI_BUD, "XFS_LI_BUD" }
248 * Inode Log Item Format definitions.
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.
255 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 uint32_t ilf_pad; /* pad for 64 bit boundary */
262 uint64_t ilf_ino; /* inode number */
264 uint32_t ilfu_rdev; /* rdev value for dev inode*/
265 uint8_t __pad[16]; /* unused */
267 int64_t ilf_blkno; /* blkno of inode buffer */
268 int32_t ilf_len; /* len of inode buffer */
269 int32_t ilf_boffset; /* off of inode in buffer */
273 * Old 32 bit systems will log in this format without the 64 bit
274 * alignment padding. Recovery will detect this and convert it to the
277 struct xfs_inode_log_format_32 {
278 uint16_t ilf_type; /* inode log item type */
279 uint16_t ilf_size; /* size of this item */
280 uint32_t ilf_fields; /* flags for fields logged */
281 uint16_t ilf_asize; /* size of attr d/ext/root */
282 uint16_t ilf_dsize; /* size of data/ext/root */
283 uint64_t ilf_ino; /* inode number */
285 uint32_t ilfu_rdev; /* rdev value for dev inode*/
286 uint8_t __pad[16]; /* unused */
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 } __attribute__((packed));
295 * Flags for xfs_trans_log_inode flags field.
297 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */
298 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */
299 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */
300 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */
301 #define XFS_ILOG_DEV 0x010 /* log the dev field */
302 #define XFS_ILOG_UUID 0x020 /* added long ago, but never used */
303 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */
304 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */
305 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */
306 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */
307 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */
311 * The timestamps are dirty, but not necessarily anything else in the inode
312 * core. Unlike the other fields above this one must never make it to disk
313 * in the ilf_fields of the inode_log_format, but is purely store in-memory in
314 * ili_fields in the inode_log_item.
316 #define XFS_ILOG_TIMESTAMP 0x4000
318 #define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
319 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
320 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
321 XFS_ILOG_ABROOT | XFS_ILOG_DOWNER | \
324 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
327 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
330 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
331 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
332 XFS_ILOG_DEV | XFS_ILOG_ADATA | \
333 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \
334 XFS_ILOG_TIMESTAMP | XFS_ILOG_DOWNER | \
337 static inline int xfs_ilog_fbroot(int w)
339 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
342 static inline int xfs_ilog_fext(int w)
344 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
347 static inline int xfs_ilog_fdata(int w)
349 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
353 * Incore version of the on-disk inode core structures. We log this directly
354 * into the journal in host CPU format (for better or worse) and as such
355 * directly mirrors the xfs_dinode structure as it must contain all the same
358 typedef struct xfs_ictimestamp {
359 int32_t t_sec; /* timestamp seconds */
360 int32_t t_nsec; /* timestamp nanoseconds */
364 * Define the format of the inode core that is logged. This structure must be
365 * kept identical to struct xfs_dinode except for the endianness annotations.
367 struct xfs_log_dinode {
368 uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
369 uint16_t di_mode; /* mode and type of file */
370 int8_t di_version; /* inode version */
371 int8_t di_format; /* format of di_c data */
372 uint8_t di_pad3[2]; /* unused in v2/3 inodes */
373 uint32_t di_uid; /* owner's user id */
374 uint32_t di_gid; /* owner's group id */
375 uint32_t di_nlink; /* number of links to file */
376 uint16_t di_projid_lo; /* lower part of owner's project id */
377 uint16_t di_projid_hi; /* higher part of owner's project id */
378 uint8_t di_pad[6]; /* unused, zeroed space */
379 uint16_t di_flushiter; /* incremented on flush */
380 xfs_ictimestamp_t di_atime; /* time last accessed */
381 xfs_ictimestamp_t di_mtime; /* time last modified */
382 xfs_ictimestamp_t di_ctime; /* time created/inode modified */
383 xfs_fsize_t di_size; /* number of bytes in file */
384 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */
385 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
386 xfs_extnum_t di_nextents; /* number of extents in data fork */
387 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
388 uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
389 int8_t di_aformat; /* format of attr fork's data */
390 uint32_t di_dmevmask; /* DMIG event mask */
391 uint16_t di_dmstate; /* DMIG state info */
392 uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
393 uint32_t di_gen; /* generation number */
395 /* di_next_unlinked is the only non-core field in the old dinode */
396 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */
398 /* start of the extended dinode, writable fields */
399 uint32_t di_crc; /* CRC of the inode */
400 uint64_t di_changecount; /* number of attribute changes */
401 xfs_lsn_t di_lsn; /* flush sequence */
402 uint64_t di_flags2; /* more random flags */
403 uint32_t di_cowextsize; /* basic cow extent size for file */
404 uint8_t di_pad2[12]; /* more padding for future expansion */
406 /* fields only written to during inode creation */
407 xfs_ictimestamp_t di_crtime; /* time created */
408 xfs_ino_t di_ino; /* inode number */
409 uuid_t di_uuid; /* UUID of the filesystem */
411 /* structure must be padded to 64 bit alignment */
414 static inline uint xfs_log_dinode_size(int version)
417 return sizeof(struct xfs_log_dinode);
418 return offsetof(struct xfs_log_dinode, di_next_unlinked);
422 * Buffer Log Format defintions
424 * These are the physical dirty bitmap defintions for the log format structure.
426 #define XFS_BLF_CHUNK 128
427 #define XFS_BLF_SHIFT 7
428 #define BIT_TO_WORD_SHIFT 5
429 #define NBWORD (NBBY * sizeof(unsigned int))
432 * This flag indicates that the buffer contains on disk inodes
433 * and requires special recovery handling.
435 #define XFS_BLF_INODE_BUF (1<<0)
438 * This flag indicates that the buffer should not be replayed
439 * during recovery because its blocks are being freed.
441 #define XFS_BLF_CANCEL (1<<1)
444 * This flag indicates that the buffer contains on disk
445 * user or group dquots and may require special recovery handling.
447 #define XFS_BLF_UDQUOT_BUF (1<<2)
448 #define XFS_BLF_PDQUOT_BUF (1<<3)
449 #define XFS_BLF_GDQUOT_BUF (1<<4)
452 * This is the structure used to lay out a buf log item in the
453 * log. The data map describes which 128 byte chunks of the buffer
456 #define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD)
458 typedef struct xfs_buf_log_format {
459 unsigned short blf_type; /* buf log item type indicator */
460 unsigned short blf_size; /* size of this item */
461 unsigned short blf_flags; /* misc state */
462 unsigned short blf_len; /* number of blocks in this buf */
463 int64_t blf_blkno; /* starting blkno of this buf */
464 unsigned int blf_map_size; /* used size of data bitmap in words */
465 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */
466 } xfs_buf_log_format_t;
469 * All buffers now need to tell recovery where the magic number
470 * is so that it can verify and calculate the CRCs on the buffer correctly
471 * once the changes have been replayed into the buffer.
473 * The type value is held in the upper 5 bits of the blf_flags field, which is
474 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down.
476 #define XFS_BLFT_BITS 5
477 #define XFS_BLFT_SHIFT 11
478 #define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT)
481 XFS_BLFT_UNKNOWN_BUF = 0,
490 XFS_BLFT_SYMLINK_BUF,
491 XFS_BLFT_DIR_BLOCK_BUF,
492 XFS_BLFT_DIR_DATA_BUF,
493 XFS_BLFT_DIR_FREE_BUF,
494 XFS_BLFT_DIR_LEAF1_BUF,
495 XFS_BLFT_DIR_LEAFN_BUF,
496 XFS_BLFT_DA_NODE_BUF,
497 XFS_BLFT_ATTR_LEAF_BUF,
498 XFS_BLFT_ATTR_RMT_BUF,
500 XFS_BLFT_RTBITMAP_BUF,
501 XFS_BLFT_RTSUMMARY_BUF,
502 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS),
506 xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type)
508 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF);
509 blf->blf_flags &= ~XFS_BLFT_MASK;
510 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK);
513 static inline uint16_t
514 xfs_blft_from_flags(struct xfs_buf_log_format *blf)
516 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT;
520 * EFI/EFD log format definitions
522 typedef struct xfs_extent {
523 xfs_fsblock_t ext_start;
524 xfs_extlen_t ext_len;
528 * Since an xfs_extent_t has types (start:64, len: 32)
529 * there are different alignments on 32 bit and 64 bit kernels.
530 * So we provide the different variants for use by a
531 * conversion routine.
533 typedef struct xfs_extent_32 {
536 } __attribute__((packed)) xfs_extent_32_t;
538 typedef struct xfs_extent_64 {
545 * This is the structure used to lay out an efi log item in the
546 * log. The efi_extents field is a variable size array whose
547 * size is given by efi_nextents.
549 typedef struct xfs_efi_log_format {
550 uint16_t efi_type; /* efi log item type */
551 uint16_t efi_size; /* size of this item */
552 uint32_t efi_nextents; /* # extents to free */
553 uint64_t efi_id; /* efi identifier */
554 xfs_extent_t efi_extents[1]; /* array of extents to free */
555 } xfs_efi_log_format_t;
557 typedef struct xfs_efi_log_format_32 {
558 uint16_t efi_type; /* efi log item type */
559 uint16_t efi_size; /* size of this item */
560 uint32_t efi_nextents; /* # extents to free */
561 uint64_t efi_id; /* efi identifier */
562 xfs_extent_32_t efi_extents[1]; /* array of extents to free */
563 } __attribute__((packed)) xfs_efi_log_format_32_t;
565 typedef struct xfs_efi_log_format_64 {
566 uint16_t efi_type; /* efi log item type */
567 uint16_t efi_size; /* size of this item */
568 uint32_t efi_nextents; /* # extents to free */
569 uint64_t efi_id; /* efi identifier */
570 xfs_extent_64_t efi_extents[1]; /* array of extents to free */
571 } xfs_efi_log_format_64_t;
574 * This is the structure used to lay out an efd log item in the
575 * log. The efd_extents array is a variable size array whose
576 * size is given by efd_nextents;
578 typedef struct xfs_efd_log_format {
579 uint16_t efd_type; /* efd log item type */
580 uint16_t efd_size; /* size of this item */
581 uint32_t efd_nextents; /* # of extents freed */
582 uint64_t efd_efi_id; /* id of corresponding efi */
583 xfs_extent_t efd_extents[1]; /* array of extents freed */
584 } xfs_efd_log_format_t;
586 typedef struct xfs_efd_log_format_32 {
587 uint16_t efd_type; /* efd log item type */
588 uint16_t efd_size; /* size of this item */
589 uint32_t efd_nextents; /* # of extents freed */
590 uint64_t efd_efi_id; /* id of corresponding efi */
591 xfs_extent_32_t efd_extents[1]; /* array of extents freed */
592 } __attribute__((packed)) xfs_efd_log_format_32_t;
594 typedef struct xfs_efd_log_format_64 {
595 uint16_t efd_type; /* efd log item type */
596 uint16_t efd_size; /* size of this item */
597 uint32_t efd_nextents; /* # of extents freed */
598 uint64_t efd_efi_id; /* id of corresponding efi */
599 xfs_extent_64_t efd_extents[1]; /* array of extents freed */
600 } xfs_efd_log_format_64_t;
603 * RUI/RUD (reverse mapping) log format definitions
605 struct xfs_map_extent {
607 uint64_t me_startblock;
608 uint64_t me_startoff;
613 /* rmap me_flags: upper bits are flags, lower byte is type code */
614 #define XFS_RMAP_EXTENT_MAP 1
615 #define XFS_RMAP_EXTENT_MAP_SHARED 2
616 #define XFS_RMAP_EXTENT_UNMAP 3
617 #define XFS_RMAP_EXTENT_UNMAP_SHARED 4
618 #define XFS_RMAP_EXTENT_CONVERT 5
619 #define XFS_RMAP_EXTENT_CONVERT_SHARED 6
620 #define XFS_RMAP_EXTENT_ALLOC 7
621 #define XFS_RMAP_EXTENT_FREE 8
622 #define XFS_RMAP_EXTENT_TYPE_MASK 0xFF
624 #define XFS_RMAP_EXTENT_ATTR_FORK (1U << 31)
625 #define XFS_RMAP_EXTENT_BMBT_BLOCK (1U << 30)
626 #define XFS_RMAP_EXTENT_UNWRITTEN (1U << 29)
628 #define XFS_RMAP_EXTENT_FLAGS (XFS_RMAP_EXTENT_TYPE_MASK | \
629 XFS_RMAP_EXTENT_ATTR_FORK | \
630 XFS_RMAP_EXTENT_BMBT_BLOCK | \
631 XFS_RMAP_EXTENT_UNWRITTEN)
634 * This is the structure used to lay out an rui log item in the
635 * log. The rui_extents field is a variable size array whose
636 * size is given by rui_nextents.
638 struct xfs_rui_log_format {
639 uint16_t rui_type; /* rui log item type */
640 uint16_t rui_size; /* size of this item */
641 uint32_t rui_nextents; /* # extents to free */
642 uint64_t rui_id; /* rui identifier */
643 struct xfs_map_extent rui_extents[]; /* array of extents to rmap */
647 xfs_rui_log_format_sizeof(
650 return sizeof(struct xfs_rui_log_format) +
651 nr * sizeof(struct xfs_map_extent);
655 * This is the structure used to lay out an rud log item in the
656 * log. The rud_extents array is a variable size array whose
657 * size is given by rud_nextents;
659 struct xfs_rud_log_format {
660 uint16_t rud_type; /* rud log item type */
661 uint16_t rud_size; /* size of this item */
663 uint64_t rud_rui_id; /* id of corresponding rui */
667 * CUI/CUD (refcount update) log format definitions
669 struct xfs_phys_extent {
670 uint64_t pe_startblock;
675 /* refcount pe_flags: upper bits are flags, lower byte is type code */
676 /* Type codes are taken directly from enum xfs_refcount_intent_type. */
677 #define XFS_REFCOUNT_EXTENT_TYPE_MASK 0xFF
679 #define XFS_REFCOUNT_EXTENT_FLAGS (XFS_REFCOUNT_EXTENT_TYPE_MASK)
682 * This is the structure used to lay out a cui log item in the
683 * log. The cui_extents field is a variable size array whose
684 * size is given by cui_nextents.
686 struct xfs_cui_log_format {
687 uint16_t cui_type; /* cui log item type */
688 uint16_t cui_size; /* size of this item */
689 uint32_t cui_nextents; /* # extents to free */
690 uint64_t cui_id; /* cui identifier */
691 struct xfs_phys_extent cui_extents[]; /* array of extents */
695 xfs_cui_log_format_sizeof(
698 return sizeof(struct xfs_cui_log_format) +
699 nr * sizeof(struct xfs_phys_extent);
703 * This is the structure used to lay out a cud log item in the
704 * log. The cud_extents array is a variable size array whose
705 * size is given by cud_nextents;
707 struct xfs_cud_log_format {
708 uint16_t cud_type; /* cud log item type */
709 uint16_t cud_size; /* size of this item */
711 uint64_t cud_cui_id; /* id of corresponding cui */
715 * BUI/BUD (inode block mapping) log format definitions
718 /* bmbt me_flags: upper bits are flags, lower byte is type code */
719 /* Type codes are taken directly from enum xfs_bmap_intent_type. */
720 #define XFS_BMAP_EXTENT_TYPE_MASK 0xFF
722 #define XFS_BMAP_EXTENT_ATTR_FORK (1U << 31)
723 #define XFS_BMAP_EXTENT_UNWRITTEN (1U << 30)
725 #define XFS_BMAP_EXTENT_FLAGS (XFS_BMAP_EXTENT_TYPE_MASK | \
726 XFS_BMAP_EXTENT_ATTR_FORK | \
727 XFS_BMAP_EXTENT_UNWRITTEN)
730 * This is the structure used to lay out an bui log item in the
731 * log. The bui_extents field is a variable size array whose
732 * size is given by bui_nextents.
734 struct xfs_bui_log_format {
735 uint16_t bui_type; /* bui log item type */
736 uint16_t bui_size; /* size of this item */
737 uint32_t bui_nextents; /* # extents to free */
738 uint64_t bui_id; /* bui identifier */
739 struct xfs_map_extent bui_extents[]; /* array of extents to bmap */
743 xfs_bui_log_format_sizeof(
746 return sizeof(struct xfs_bui_log_format) +
747 nr * sizeof(struct xfs_map_extent);
751 * This is the structure used to lay out an bud log item in the
752 * log. The bud_extents array is a variable size array whose
753 * size is given by bud_nextents;
755 struct xfs_bud_log_format {
756 uint16_t bud_type; /* bud log item type */
757 uint16_t bud_size; /* size of this item */
759 uint64_t bud_bui_id; /* id of corresponding bui */
763 * Dquot Log format definitions.
765 * The first two fields must be the type and size fitting into
766 * 32 bits : log_recovery code assumes that.
768 typedef struct xfs_dq_logformat {
769 uint16_t qlf_type; /* dquot log item type */
770 uint16_t qlf_size; /* size of this item */
771 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */
772 int64_t qlf_blkno; /* blkno of dquot buffer */
773 int32_t qlf_len; /* len of dquot buffer */
774 uint32_t qlf_boffset; /* off of dquot in buffer */
775 } xfs_dq_logformat_t;
778 * log format struct for QUOTAOFF records.
779 * The first two fields must be the type and size fitting into
780 * 32 bits : log_recovery code assumes that.
781 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer
782 * to the first and ensures that the first logitem is taken out of the AIL
783 * only when the last one is securely committed.
785 typedef struct xfs_qoff_logformat {
786 unsigned short qf_type; /* quotaoff log item type */
787 unsigned short qf_size; /* size of this item */
788 unsigned int qf_flags; /* USR and/or GRP */
789 char qf_pad[12]; /* padding for future */
790 } xfs_qoff_logformat_t;
793 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
795 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */
796 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */
797 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */
798 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */
799 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */
800 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */
801 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */
804 * Conversion to and from the combined OQUOTA flag (if necessary)
805 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk()
807 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */
808 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */
809 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */
810 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */
812 #define XFS_ALL_QUOTA_ACCT \
813 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT)
814 #define XFS_ALL_QUOTA_ENFD \
815 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD)
816 #define XFS_ALL_QUOTA_CHKD \
817 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD)
819 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
820 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
821 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\
822 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\
826 * Inode create log item structure
828 * Log recovery assumes the first two entries are the type and size and they fit
829 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so
830 * decoding can be done correctly.
832 struct xfs_icreate_log {
833 uint16_t icl_type; /* type of log format structure */
834 uint16_t icl_size; /* size of log format structure */
835 __be32 icl_ag; /* ag being allocated in */
836 __be32 icl_agbno; /* start block of inode range */
837 __be32 icl_count; /* number of inodes to initialise */
838 __be32 icl_isize; /* size of inodes */
839 __be32 icl_length; /* length of extent to initialise */
840 __be32 icl_gen; /* inode generation number to use */
843 #endif /* __XFS_LOG_FORMAT_H__ */