1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6 #ifndef __XFS_LOG_FORMAT_H__
7 #define __XFS_LOG_FORMAT_H__
8
9 struct xfs_mount;
10 struct xfs_trans_res;
11
12 /*
13 * On-disk Log Format definitions.
14 *
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
20 * log.
21 */
22 typedef uint32_t xlog_tid_t;
23
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
38 #define XLOG_HEADER_SIZE 512
39
40 /* Minimum number of transactions that must fit in the log (defined by mkfs) */
41 #define XFS_MIN_LOG_FACTOR 3
42
43 #define XLOG_REC_SHIFT(log) \
44 BTOBB(1 << (xfs_has_logv2(log->l_mp) ? \
45 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
46 #define XLOG_TOTAL_REC_SHIFT(log) \
47 BTOBB(XLOG_MAX_ICLOGS << (xfs_has_logv2(log->l_mp) ? \
48 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
49
50 /* get lsn fields */
51 #define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
52 #define BLOCK_LSN(lsn) ((uint)(lsn))
53
54 /* this is used in a spot where we might otherwise double-endian-flip */
55 #define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0])
56
xlog_assign_lsn(uint cycle,uint block)57 static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block)
58 {
59 return ((xfs_lsn_t)cycle << 32) | block;
60 }
61
xlog_get_cycle(char * ptr)62 static inline uint xlog_get_cycle(char *ptr)
63 {
64 if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM)
65 return be32_to_cpu(*((__be32 *)ptr + 1));
66 else
67 return be32_to_cpu(*(__be32 *)ptr);
68 }
69
70 /* Log Clients */
71 #define XFS_TRANSACTION 0x69
72 #define XFS_LOG 0xaa
73
74 #define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */
75
76 /*
77 * Log item for unmount records.
78 *
79 * The unmount record used to have a string "Unmount filesystem--" in the
80 * data section where the "Un" was really a magic number (XLOG_UNMOUNT_TYPE).
81 * We just write the magic number now; see xfs_log_unmount_write.
82 */
83 struct xfs_unmount_log_format {
84 uint16_t magic; /* XLOG_UNMOUNT_TYPE */
85 uint16_t pad1;
86 uint32_t pad2; /* may as well make it 64 bits */
87 };
88
89 /* Region types for iovec's i_type */
90 #define XLOG_REG_TYPE_BFORMAT 1
91 #define XLOG_REG_TYPE_BCHUNK 2
92 #define XLOG_REG_TYPE_EFI_FORMAT 3
93 #define XLOG_REG_TYPE_EFD_FORMAT 4
94 #define XLOG_REG_TYPE_IFORMAT 5
95 #define XLOG_REG_TYPE_ICORE 6
96 #define XLOG_REG_TYPE_IEXT 7
97 #define XLOG_REG_TYPE_IBROOT 8
98 #define XLOG_REG_TYPE_ILOCAL 9
99 #define XLOG_REG_TYPE_IATTR_EXT 10
100 #define XLOG_REG_TYPE_IATTR_BROOT 11
101 #define XLOG_REG_TYPE_IATTR_LOCAL 12
102 #define XLOG_REG_TYPE_QFORMAT 13
103 #define XLOG_REG_TYPE_DQUOT 14
104 #define XLOG_REG_TYPE_QUOTAOFF 15
105 #define XLOG_REG_TYPE_LRHEADER 16
106 #define XLOG_REG_TYPE_UNMOUNT 17
107 #define XLOG_REG_TYPE_COMMIT 18
108 #define XLOG_REG_TYPE_TRANSHDR 19
109 #define XLOG_REG_TYPE_ICREATE 20
110 #define XLOG_REG_TYPE_RUI_FORMAT 21
111 #define XLOG_REG_TYPE_RUD_FORMAT 22
112 #define XLOG_REG_TYPE_CUI_FORMAT 23
113 #define XLOG_REG_TYPE_CUD_FORMAT 24
114 #define XLOG_REG_TYPE_BUI_FORMAT 25
115 #define XLOG_REG_TYPE_BUD_FORMAT 26
116 #define XLOG_REG_TYPE_ATTRI_FORMAT 27
117 #define XLOG_REG_TYPE_ATTRD_FORMAT 28
118 #define XLOG_REG_TYPE_ATTR_NAME 29
119 #define XLOG_REG_TYPE_ATTR_VALUE 30
120 #define XLOG_REG_TYPE_XMI_FORMAT 31
121 #define XLOG_REG_TYPE_XMD_FORMAT 32
122 #define XLOG_REG_TYPE_ATTR_NEWNAME 33
123 #define XLOG_REG_TYPE_ATTR_NEWVALUE 34
124 #define XLOG_REG_TYPE_MAX 34
125
126 /*
127 * Flags to log operation header
128 *
129 * The first write of a new transaction will be preceded with a start
130 * record, XLOG_START_TRANS. Once a transaction is committed, a commit
131 * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into
132 * the remainder of the current active in-core log, it is split up into
133 * multiple regions. Each partial region will be marked with a
134 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS.
135 *
136 */
137 #define XLOG_START_TRANS 0x01 /* Start a new transaction */
138 #define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */
139 #define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */
140 #define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */
141 #define XLOG_END_TRANS 0x10 /* End a continued transaction */
142 #define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */
143
144
145 typedef struct xlog_op_header {
146 __be32 oh_tid; /* transaction id of operation : 4 b */
147 __be32 oh_len; /* bytes in data region : 4 b */
148 __u8 oh_clientid; /* who sent me this : 1 b */
149 __u8 oh_flags; /* : 1 b */
150 __u16 oh_res2; /* 32 bit align : 2 b */
151 } xlog_op_header_t;
152
153 /* valid values for h_fmt */
154 #define XLOG_FMT_UNKNOWN 0
155 #define XLOG_FMT_LINUX_LE 1
156 #define XLOG_FMT_LINUX_BE 2
157 #define XLOG_FMT_IRIX_BE 3
158
159 /* our fmt */
160 #ifdef XFS_NATIVE_HOST
161 #define XLOG_FMT XLOG_FMT_LINUX_BE
162 #else
163 #define XLOG_FMT XLOG_FMT_LINUX_LE
164 #endif
165
166 typedef struct xlog_rec_header {
167 __be32 h_magicno; /* log record (LR) identifier : 4 */
168 __be32 h_cycle; /* write cycle of log : 4 */
169 __be32 h_version; /* LR version : 4 */
170 __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */
171 __be64 h_lsn; /* lsn of this LR : 8 */
172 __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */
173 __le32 h_crc; /* crc of log record : 4 */
174 __be32 h_prev_block; /* block number to previous LR : 4 */
175 __be32 h_num_logops; /* number of log operations in this LR : 4 */
176 __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE];
177 /* new fields */
178 __be32 h_fmt; /* format of log record : 4 */
179 uuid_t h_fs_uuid; /* uuid of FS : 16 */
180 __be32 h_size; /* iclog size : 4 */
181 } xlog_rec_header_t;
182
183 typedef struct xlog_rec_ext_header {
184 __be32 xh_cycle; /* write cycle of log : 4 */
185 __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */
186 } xlog_rec_ext_header_t;
187
188 /*
189 * Quite misnamed, because this union lays out the actual on-disk log buffer.
190 */
191 typedef union xlog_in_core2 {
192 xlog_rec_header_t hic_header;
193 xlog_rec_ext_header_t hic_xheader;
194 char hic_sector[XLOG_HEADER_SIZE];
195 } xlog_in_core_2_t;
196
197 /* not an on-disk structure, but needed by log recovery in userspace */
198 typedef struct xfs_log_iovec {
199 void *i_addr; /* beginning address of region */
200 int i_len; /* length in bytes of region */
201 uint i_type; /* type of region */
202 } xfs_log_iovec_t;
203
204
205 /*
206 * Transaction Header definitions.
207 *
208 * This is the structure written in the log at the head of every transaction. It
209 * identifies the type and id of the transaction, and contains the number of
210 * items logged by the transaction so we know how many to expect during
211 * recovery.
212 *
213 * Do not change the below structure without redoing the code in
214 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
215 */
216 typedef struct xfs_trans_header {
217 uint th_magic; /* magic number */
218 uint th_type; /* transaction type */
219 int32_t th_tid; /* transaction id (unused) */
220 uint th_num_items; /* num items logged by trans */
221 } xfs_trans_header_t;
222
223 #define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */
224
225 /*
226 * The only type valid for th_type in CIL-enabled file system logs:
227 */
228 #define XFS_TRANS_CHECKPOINT 40
229
230 /*
231 * Log item types.
232 */
233 #define XFS_LI_EFI 0x1236
234 #define XFS_LI_EFD 0x1237
235 #define XFS_LI_IUNLINK 0x1238
236 #define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */
237 #define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */
238 #define XFS_LI_DQUOT 0x123d
239 #define XFS_LI_QUOTAOFF 0x123e
240 #define XFS_LI_ICREATE 0x123f
241 #define XFS_LI_RUI 0x1240 /* rmap update intent */
242 #define XFS_LI_RUD 0x1241
243 #define XFS_LI_CUI 0x1242 /* refcount update intent */
244 #define XFS_LI_CUD 0x1243
245 #define XFS_LI_BUI 0x1244 /* bmbt update intent */
246 #define XFS_LI_BUD 0x1245
247 #define XFS_LI_ATTRI 0x1246 /* attr set/remove intent*/
248 #define XFS_LI_ATTRD 0x1247 /* attr set/remove done */
249 #define XFS_LI_XMI 0x1248 /* mapping exchange intent */
250 #define XFS_LI_XMD 0x1249 /* mapping exchange done */
251
252 #define XFS_LI_TYPE_DESC \
253 { XFS_LI_EFI, "XFS_LI_EFI" }, \
254 { XFS_LI_EFD, "XFS_LI_EFD" }, \
255 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \
256 { XFS_LI_INODE, "XFS_LI_INODE" }, \
257 { XFS_LI_BUF, "XFS_LI_BUF" }, \
258 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \
259 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \
260 { XFS_LI_ICREATE, "XFS_LI_ICREATE" }, \
261 { XFS_LI_RUI, "XFS_LI_RUI" }, \
262 { XFS_LI_RUD, "XFS_LI_RUD" }, \
263 { XFS_LI_CUI, "XFS_LI_CUI" }, \
264 { XFS_LI_CUD, "XFS_LI_CUD" }, \
265 { XFS_LI_BUI, "XFS_LI_BUI" }, \
266 { XFS_LI_BUD, "XFS_LI_BUD" }, \
267 { XFS_LI_ATTRI, "XFS_LI_ATTRI" }, \
268 { XFS_LI_ATTRD, "XFS_LI_ATTRD" }, \
269 { XFS_LI_XMI, "XFS_LI_XMI" }, \
270 { XFS_LI_XMD, "XFS_LI_XMD" }
271
272 /*
273 * Inode Log Item Format definitions.
274 *
275 * This is the structure used to lay out an inode log item in the
276 * log. The size of the inline data/extents/b-tree root to be logged
277 * (if any) is indicated in the ilf_dsize field. Changes to this structure
278 * must be added on to the end.
279 */
280 struct xfs_inode_log_format {
281 uint16_t ilf_type; /* inode log item type */
282 uint16_t ilf_size; /* size of this item */
283 uint32_t ilf_fields; /* flags for fields logged */
284 uint16_t ilf_asize; /* size of attr d/ext/root */
285 uint16_t ilf_dsize; /* size of data/ext/root */
286 uint32_t ilf_pad; /* pad for 64 bit boundary */
287 uint64_t ilf_ino; /* inode number */
288 union {
289 uint32_t ilfu_rdev; /* rdev value for dev inode*/
290 uint8_t __pad[16]; /* unused */
291 } ilf_u;
292 int64_t ilf_blkno; /* blkno of inode buffer */
293 int32_t ilf_len; /* len of inode buffer */
294 int32_t ilf_boffset; /* off of inode in buffer */
295 };
296
297 /*
298 * Old 32 bit systems will log in this format without the 64 bit
299 * alignment padding. Recovery will detect this and convert it to the
300 * correct format.
301 */
302 struct xfs_inode_log_format_32 {
303 uint16_t ilf_type; /* inode log item type */
304 uint16_t ilf_size; /* size of this item */
305 uint32_t ilf_fields; /* flags for fields logged */
306 uint16_t ilf_asize; /* size of attr d/ext/root */
307 uint16_t ilf_dsize; /* size of data/ext/root */
308 uint64_t ilf_ino; /* inode number */
309 union {
310 uint32_t ilfu_rdev; /* rdev value for dev inode*/
311 uint8_t __pad[16]; /* unused */
312 } ilf_u;
313 int64_t ilf_blkno; /* blkno of inode buffer */
314 int32_t ilf_len; /* len of inode buffer */
315 int32_t ilf_boffset; /* off of inode in buffer */
316 } __attribute__((packed));
317
318
319 /*
320 * Flags for xfs_trans_log_inode flags field.
321 */
322 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */
323 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */
324 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */
325 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */
326 #define XFS_ILOG_DEV 0x010 /* log the dev field */
327 #define XFS_ILOG_UUID 0x020 /* added long ago, but never used */
328 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */
329 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */
330 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */
331 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */
332 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */
333
334 /*
335 * The timestamps are dirty, but not necessarily anything else in the inode
336 * core. Unlike the other fields above this one must never make it to disk
337 * in the ilf_fields of the inode_log_format, but is purely store in-memory in
338 * ili_fields in the inode_log_item.
339 */
340 #define XFS_ILOG_TIMESTAMP 0x4000
341
342 /*
343 * The version field has been changed, but not necessarily anything else of
344 * interest. This must never make it to disk - it is used purely to ensure that
345 * the inode item ->precommit operation can update the fsync flag triggers
346 * in the inode item correctly.
347 */
348 #define XFS_ILOG_IVERSION 0x8000
349
350 #define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
351 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
352 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
353 XFS_ILOG_ABROOT | XFS_ILOG_DOWNER | \
354 XFS_ILOG_AOWNER)
355
356 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
357 XFS_ILOG_DBROOT)
358
359 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
360 XFS_ILOG_ABROOT)
361
362 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
363 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
364 XFS_ILOG_DEV | XFS_ILOG_ADATA | \
365 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \
366 XFS_ILOG_TIMESTAMP | XFS_ILOG_DOWNER | \
367 XFS_ILOG_AOWNER)
368
xfs_ilog_fbroot(int w)369 static inline int xfs_ilog_fbroot(int w)
370 {
371 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
372 }
373
xfs_ilog_fext(int w)374 static inline int xfs_ilog_fext(int w)
375 {
376 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
377 }
378
xfs_ilog_fdata(int w)379 static inline int xfs_ilog_fdata(int w)
380 {
381 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
382 }
383
384 /*
385 * Incore version of the on-disk inode core structures. We log this directly
386 * into the journal in host CPU format (for better or worse) and as such
387 * directly mirrors the xfs_dinode structure as it must contain all the same
388 * information.
389 */
390 typedef uint64_t xfs_log_timestamp_t;
391
392 /* Legacy timestamp encoding format. */
393 struct xfs_log_legacy_timestamp {
394 int32_t t_sec; /* timestamp seconds */
395 int32_t t_nsec; /* timestamp nanoseconds */
396 };
397
398 /*
399 * Define the format of the inode core that is logged. This structure must be
400 * kept identical to struct xfs_dinode except for the endianness annotations.
401 */
402 struct xfs_log_dinode {
403 uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
404 uint16_t di_mode; /* mode and type of file */
405 int8_t di_version; /* inode version */
406 int8_t di_format; /* format of di_c data */
407 uint8_t di_pad3[2]; /* unused in v2/3 inodes */
408 uint32_t di_uid; /* owner's user id */
409 uint32_t di_gid; /* owner's group id */
410 uint32_t di_nlink; /* number of links to file */
411 uint16_t di_projid_lo; /* lower part of owner's project id */
412 uint16_t di_projid_hi; /* higher part of owner's project id */
413 union {
414 /* Number of data fork extents if NREXT64 is set */
415 uint64_t di_big_nextents;
416
417 /* Padding for V3 inodes without NREXT64 set. */
418 uint64_t di_v3_pad;
419
420 /* Padding and inode flush counter for V2 inodes. */
421 struct {
422 uint8_t di_v2_pad[6]; /* V2 inode zeroed space */
423 uint16_t di_flushiter; /* V2 inode incremented on flush */
424 };
425 };
426 xfs_log_timestamp_t di_atime; /* time last accessed */
427 xfs_log_timestamp_t di_mtime; /* time last modified */
428 xfs_log_timestamp_t di_ctime; /* time created/inode modified */
429 xfs_fsize_t di_size; /* number of bytes in file */
430 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */
431 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
432 union {
433 /*
434 * For V2 inodes and V3 inodes without NREXT64 set, this
435 * is the number of data and attr fork extents.
436 */
437 struct {
438 uint32_t di_nextents;
439 uint16_t di_anextents;
440 } __packed;
441
442 /* Number of attr fork extents if NREXT64 is set. */
443 struct {
444 uint32_t di_big_anextents;
445 uint16_t di_nrext64_pad;
446 } __packed;
447 } __packed;
448 uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
449 int8_t di_aformat; /* format of attr fork's data */
450 uint32_t di_dmevmask; /* DMIG event mask */
451 uint16_t di_dmstate; /* DMIG state info */
452 uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
453 uint32_t di_gen; /* generation number */
454
455 /* di_next_unlinked is the only non-core field in the old dinode */
456 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */
457
458 /* start of the extended dinode, writable fields */
459 uint32_t di_crc; /* CRC of the inode */
460 uint64_t di_changecount; /* number of attribute changes */
461
462 /*
463 * The LSN we write to this field during formatting is not a reflection
464 * of the current on-disk LSN. It should never be used for recovery
465 * sequencing, nor should it be recovered into the on-disk inode at all.
466 * See xlog_recover_inode_commit_pass2() and xfs_log_dinode_to_disk()
467 * for details.
468 */
469 xfs_lsn_t di_lsn;
470
471 uint64_t di_flags2; /* more random flags */
472 uint32_t di_cowextsize; /* basic cow extent size for file */
473 uint8_t di_pad2[12]; /* more padding for future expansion */
474
475 /* fields only written to during inode creation */
476 xfs_log_timestamp_t di_crtime; /* time created */
477 xfs_ino_t di_ino; /* inode number */
478 uuid_t di_uuid; /* UUID of the filesystem */
479
480 /* structure must be padded to 64 bit alignment */
481 };
482
483 #define xfs_log_dinode_size(mp) \
484 (xfs_has_v3inodes((mp)) ? \
485 sizeof(struct xfs_log_dinode) : \
486 offsetof(struct xfs_log_dinode, di_next_unlinked))
487
488 /*
489 * Buffer Log Format definitions
490 *
491 * These are the physical dirty bitmap definitions for the log format structure.
492 */
493 #define XFS_BLF_CHUNK 128
494 #define XFS_BLF_SHIFT 7
495 #define BIT_TO_WORD_SHIFT 5
496 #define NBWORD (NBBY * sizeof(unsigned int))
497
498 /*
499 * This flag indicates that the buffer contains on disk inodes
500 * and requires special recovery handling.
501 */
502 #define XFS_BLF_INODE_BUF (1<<0)
503
504 /*
505 * This flag indicates that the buffer should not be replayed
506 * during recovery because its blocks are being freed.
507 */
508 #define XFS_BLF_CANCEL (1<<1)
509
510 /*
511 * This flag indicates that the buffer contains on disk
512 * user or group dquots and may require special recovery handling.
513 */
514 #define XFS_BLF_UDQUOT_BUF (1<<2)
515 #define XFS_BLF_PDQUOT_BUF (1<<3)
516 #define XFS_BLF_GDQUOT_BUF (1<<4)
517
518 /*
519 * This is the structure used to lay out a buf log item in the log. The data
520 * map describes which 128 byte chunks of the buffer have been logged.
521 *
522 * The placement of blf_map_size causes blf_data_map to start at an odd
523 * multiple of sizeof(unsigned int) offset within the struct. Because the data
524 * bitmap size will always be an even number, the end of the data_map (and
525 * therefore the structure) will also be at an odd multiple of sizeof(unsigned
526 * int). Some 64-bit compilers will insert padding at the end of the struct to
527 * ensure 64-bit alignment of blf_blkno, but 32-bit ones will not. Therefore,
528 * XFS_BLF_DATAMAP_SIZE must be an odd number to make the padding explicit and
529 * keep the structure size consistent between 32-bit and 64-bit platforms.
530 */
531 #define __XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD)
532 #define XFS_BLF_DATAMAP_SIZE (__XFS_BLF_DATAMAP_SIZE + 1)
533
534 typedef struct xfs_buf_log_format {
535 unsigned short blf_type; /* buf log item type indicator */
536 unsigned short blf_size; /* size of this item */
537 unsigned short blf_flags; /* misc state */
538 unsigned short blf_len; /* number of blocks in this buf */
539 int64_t blf_blkno; /* starting blkno of this buf */
540 unsigned int blf_map_size; /* used size of data bitmap in words */
541 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */
542 } xfs_buf_log_format_t;
543
544 /*
545 * All buffers now need to tell recovery where the magic number
546 * is so that it can verify and calculate the CRCs on the buffer correctly
547 * once the changes have been replayed into the buffer.
548 *
549 * The type value is held in the upper 5 bits of the blf_flags field, which is
550 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down.
551 */
552 #define XFS_BLFT_BITS 5
553 #define XFS_BLFT_SHIFT 11
554 #define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT)
555
556 enum xfs_blft {
557 XFS_BLFT_UNKNOWN_BUF = 0,
558 XFS_BLFT_UDQUOT_BUF,
559 XFS_BLFT_PDQUOT_BUF,
560 XFS_BLFT_GDQUOT_BUF,
561 XFS_BLFT_BTREE_BUF,
562 XFS_BLFT_AGF_BUF,
563 XFS_BLFT_AGFL_BUF,
564 XFS_BLFT_AGI_BUF,
565 XFS_BLFT_DINO_BUF,
566 XFS_BLFT_SYMLINK_BUF,
567 XFS_BLFT_DIR_BLOCK_BUF,
568 XFS_BLFT_DIR_DATA_BUF,
569 XFS_BLFT_DIR_FREE_BUF,
570 XFS_BLFT_DIR_LEAF1_BUF,
571 XFS_BLFT_DIR_LEAFN_BUF,
572 XFS_BLFT_DA_NODE_BUF,
573 XFS_BLFT_ATTR_LEAF_BUF,
574 XFS_BLFT_ATTR_RMT_BUF,
575 XFS_BLFT_SB_BUF,
576 XFS_BLFT_RTBITMAP_BUF,
577 XFS_BLFT_RTSUMMARY_BUF,
578 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS),
579 };
580
581 static inline void
xfs_blft_to_flags(struct xfs_buf_log_format * blf,enum xfs_blft type)582 xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type)
583 {
584 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF);
585 blf->blf_flags &= ~XFS_BLFT_MASK;
586 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK);
587 }
588
589 static inline uint16_t
xfs_blft_from_flags(struct xfs_buf_log_format * blf)590 xfs_blft_from_flags(struct xfs_buf_log_format *blf)
591 {
592 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT;
593 }
594
595 /*
596 * EFI/EFD log format definitions
597 */
598 typedef struct xfs_extent {
599 xfs_fsblock_t ext_start;
600 xfs_extlen_t ext_len;
601 } xfs_extent_t;
602
603 /*
604 * Since an xfs_extent_t has types (start:64, len: 32)
605 * there are different alignments on 32 bit and 64 bit kernels.
606 * So we provide the different variants for use by a
607 * conversion routine.
608 */
609 typedef struct xfs_extent_32 {
610 uint64_t ext_start;
611 uint32_t ext_len;
612 } __attribute__((packed)) xfs_extent_32_t;
613
614 typedef struct xfs_extent_64 {
615 uint64_t ext_start;
616 uint32_t ext_len;
617 uint32_t ext_pad;
618 } xfs_extent_64_t;
619
620 /*
621 * This is the structure used to lay out an efi log item in the
622 * log. The efi_extents field is a variable size array whose
623 * size is given by efi_nextents.
624 */
625 typedef struct xfs_efi_log_format {
626 uint16_t efi_type; /* efi log item type */
627 uint16_t efi_size; /* size of this item */
628 uint32_t efi_nextents; /* # extents to free */
629 uint64_t efi_id; /* efi identifier */
630 xfs_extent_t efi_extents[]; /* array of extents to free */
631 } xfs_efi_log_format_t;
632
633 static inline size_t
xfs_efi_log_format_sizeof(unsigned int nr)634 xfs_efi_log_format_sizeof(
635 unsigned int nr)
636 {
637 return sizeof(struct xfs_efi_log_format) +
638 nr * sizeof(struct xfs_extent);
639 }
640
641 typedef struct xfs_efi_log_format_32 {
642 uint16_t efi_type; /* efi log item type */
643 uint16_t efi_size; /* size of this item */
644 uint32_t efi_nextents; /* # extents to free */
645 uint64_t efi_id; /* efi identifier */
646 xfs_extent_32_t efi_extents[]; /* array of extents to free */
647 } __attribute__((packed)) xfs_efi_log_format_32_t;
648
649 static inline size_t
xfs_efi_log_format32_sizeof(unsigned int nr)650 xfs_efi_log_format32_sizeof(
651 unsigned int nr)
652 {
653 return sizeof(struct xfs_efi_log_format_32) +
654 nr * sizeof(struct xfs_extent_32);
655 }
656
657 typedef struct xfs_efi_log_format_64 {
658 uint16_t efi_type; /* efi log item type */
659 uint16_t efi_size; /* size of this item */
660 uint32_t efi_nextents; /* # extents to free */
661 uint64_t efi_id; /* efi identifier */
662 xfs_extent_64_t efi_extents[]; /* array of extents to free */
663 } xfs_efi_log_format_64_t;
664
665 static inline size_t
xfs_efi_log_format64_sizeof(unsigned int nr)666 xfs_efi_log_format64_sizeof(
667 unsigned int nr)
668 {
669 return sizeof(struct xfs_efi_log_format_64) +
670 nr * sizeof(struct xfs_extent_64);
671 }
672
673 /*
674 * This is the structure used to lay out an efd log item in the
675 * log. The efd_extents array is a variable size array whose
676 * size is given by efd_nextents;
677 */
678 typedef struct xfs_efd_log_format {
679 uint16_t efd_type; /* efd log item type */
680 uint16_t efd_size; /* size of this item */
681 uint32_t efd_nextents; /* # of extents freed */
682 uint64_t efd_efi_id; /* id of corresponding efi */
683 xfs_extent_t efd_extents[]; /* array of extents freed */
684 } xfs_efd_log_format_t;
685
686 static inline size_t
xfs_efd_log_format_sizeof(unsigned int nr)687 xfs_efd_log_format_sizeof(
688 unsigned int nr)
689 {
690 return sizeof(struct xfs_efd_log_format) +
691 nr * sizeof(struct xfs_extent);
692 }
693
694 typedef struct xfs_efd_log_format_32 {
695 uint16_t efd_type; /* efd log item type */
696 uint16_t efd_size; /* size of this item */
697 uint32_t efd_nextents; /* # of extents freed */
698 uint64_t efd_efi_id; /* id of corresponding efi */
699 xfs_extent_32_t efd_extents[]; /* array of extents freed */
700 } __attribute__((packed)) xfs_efd_log_format_32_t;
701
702 static inline size_t
xfs_efd_log_format32_sizeof(unsigned int nr)703 xfs_efd_log_format32_sizeof(
704 unsigned int nr)
705 {
706 return sizeof(struct xfs_efd_log_format_32) +
707 nr * sizeof(struct xfs_extent_32);
708 }
709
710 typedef struct xfs_efd_log_format_64 {
711 uint16_t efd_type; /* efd log item type */
712 uint16_t efd_size; /* size of this item */
713 uint32_t efd_nextents; /* # of extents freed */
714 uint64_t efd_efi_id; /* id of corresponding efi */
715 xfs_extent_64_t efd_extents[]; /* array of extents freed */
716 } xfs_efd_log_format_64_t;
717
718 static inline size_t
xfs_efd_log_format64_sizeof(unsigned int nr)719 xfs_efd_log_format64_sizeof(
720 unsigned int nr)
721 {
722 return sizeof(struct xfs_efd_log_format_64) +
723 nr * sizeof(struct xfs_extent_64);
724 }
725
726 /*
727 * RUI/RUD (reverse mapping) log format definitions
728 */
729 struct xfs_map_extent {
730 uint64_t me_owner;
731 uint64_t me_startblock;
732 uint64_t me_startoff;
733 uint32_t me_len;
734 uint32_t me_flags;
735 };
736
737 /* rmap me_flags: upper bits are flags, lower byte is type code */
738 #define XFS_RMAP_EXTENT_MAP 1
739 #define XFS_RMAP_EXTENT_MAP_SHARED 2
740 #define XFS_RMAP_EXTENT_UNMAP 3
741 #define XFS_RMAP_EXTENT_UNMAP_SHARED 4
742 #define XFS_RMAP_EXTENT_CONVERT 5
743 #define XFS_RMAP_EXTENT_CONVERT_SHARED 6
744 #define XFS_RMAP_EXTENT_ALLOC 7
745 #define XFS_RMAP_EXTENT_FREE 8
746 #define XFS_RMAP_EXTENT_TYPE_MASK 0xFF
747
748 #define XFS_RMAP_EXTENT_ATTR_FORK (1U << 31)
749 #define XFS_RMAP_EXTENT_BMBT_BLOCK (1U << 30)
750 #define XFS_RMAP_EXTENT_UNWRITTEN (1U << 29)
751
752 #define XFS_RMAP_EXTENT_FLAGS (XFS_RMAP_EXTENT_TYPE_MASK | \
753 XFS_RMAP_EXTENT_ATTR_FORK | \
754 XFS_RMAP_EXTENT_BMBT_BLOCK | \
755 XFS_RMAP_EXTENT_UNWRITTEN)
756
757 /*
758 * This is the structure used to lay out an rui log item in the
759 * log. The rui_extents field is a variable size array whose
760 * size is given by rui_nextents.
761 */
762 struct xfs_rui_log_format {
763 uint16_t rui_type; /* rui log item type */
764 uint16_t rui_size; /* size of this item */
765 uint32_t rui_nextents; /* # extents to free */
766 uint64_t rui_id; /* rui identifier */
767 struct xfs_map_extent rui_extents[]; /* array of extents to rmap */
768 };
769
770 static inline size_t
xfs_rui_log_format_sizeof(unsigned int nr)771 xfs_rui_log_format_sizeof(
772 unsigned int nr)
773 {
774 return sizeof(struct xfs_rui_log_format) +
775 nr * sizeof(struct xfs_map_extent);
776 }
777
778 /*
779 * This is the structure used to lay out an rud log item in the
780 * log. The rud_extents array is a variable size array whose
781 * size is given by rud_nextents;
782 */
783 struct xfs_rud_log_format {
784 uint16_t rud_type; /* rud log item type */
785 uint16_t rud_size; /* size of this item */
786 uint32_t __pad;
787 uint64_t rud_rui_id; /* id of corresponding rui */
788 };
789
790 /*
791 * CUI/CUD (refcount update) log format definitions
792 */
793 struct xfs_phys_extent {
794 uint64_t pe_startblock;
795 uint32_t pe_len;
796 uint32_t pe_flags;
797 };
798
799 /* refcount pe_flags: upper bits are flags, lower byte is type code */
800 /* Type codes are taken directly from enum xfs_refcount_intent_type. */
801 #define XFS_REFCOUNT_EXTENT_TYPE_MASK 0xFF
802
803 #define XFS_REFCOUNT_EXTENT_FLAGS (XFS_REFCOUNT_EXTENT_TYPE_MASK)
804
805 /*
806 * This is the structure used to lay out a cui log item in the
807 * log. The cui_extents field is a variable size array whose
808 * size is given by cui_nextents.
809 */
810 struct xfs_cui_log_format {
811 uint16_t cui_type; /* cui log item type */
812 uint16_t cui_size; /* size of this item */
813 uint32_t cui_nextents; /* # extents to free */
814 uint64_t cui_id; /* cui identifier */
815 struct xfs_phys_extent cui_extents[]; /* array of extents */
816 };
817
818 static inline size_t
xfs_cui_log_format_sizeof(unsigned int nr)819 xfs_cui_log_format_sizeof(
820 unsigned int nr)
821 {
822 return sizeof(struct xfs_cui_log_format) +
823 nr * sizeof(struct xfs_phys_extent);
824 }
825
826 /*
827 * This is the structure used to lay out a cud log item in the
828 * log. The cud_extents array is a variable size array whose
829 * size is given by cud_nextents;
830 */
831 struct xfs_cud_log_format {
832 uint16_t cud_type; /* cud log item type */
833 uint16_t cud_size; /* size of this item */
834 uint32_t __pad;
835 uint64_t cud_cui_id; /* id of corresponding cui */
836 };
837
838 /*
839 * BUI/BUD (inode block mapping) log format definitions
840 */
841
842 /* bmbt me_flags: upper bits are flags, lower byte is type code */
843 /* Type codes are taken directly from enum xfs_bmap_intent_type. */
844 #define XFS_BMAP_EXTENT_TYPE_MASK 0xFF
845
846 #define XFS_BMAP_EXTENT_ATTR_FORK (1U << 31)
847 #define XFS_BMAP_EXTENT_UNWRITTEN (1U << 30)
848 #define XFS_BMAP_EXTENT_REALTIME (1U << 29)
849
850 #define XFS_BMAP_EXTENT_FLAGS (XFS_BMAP_EXTENT_TYPE_MASK | \
851 XFS_BMAP_EXTENT_ATTR_FORK | \
852 XFS_BMAP_EXTENT_UNWRITTEN | \
853 XFS_BMAP_EXTENT_REALTIME)
854
855 /*
856 * This is the structure used to lay out an bui log item in the
857 * log. The bui_extents field is a variable size array whose
858 * size is given by bui_nextents.
859 */
860 struct xfs_bui_log_format {
861 uint16_t bui_type; /* bui log item type */
862 uint16_t bui_size; /* size of this item */
863 uint32_t bui_nextents; /* # extents to free */
864 uint64_t bui_id; /* bui identifier */
865 struct xfs_map_extent bui_extents[]; /* array of extents to bmap */
866 };
867
868 static inline size_t
xfs_bui_log_format_sizeof(unsigned int nr)869 xfs_bui_log_format_sizeof(
870 unsigned int nr)
871 {
872 return sizeof(struct xfs_bui_log_format) +
873 nr * sizeof(struct xfs_map_extent);
874 }
875
876 /*
877 * This is the structure used to lay out an bud log item in the
878 * log. The bud_extents array is a variable size array whose
879 * size is given by bud_nextents;
880 */
881 struct xfs_bud_log_format {
882 uint16_t bud_type; /* bud log item type */
883 uint16_t bud_size; /* size of this item */
884 uint32_t __pad;
885 uint64_t bud_bui_id; /* id of corresponding bui */
886 };
887
888 /*
889 * XMI/XMD (file mapping exchange) log format definitions
890 */
891
892 /* This is the structure used to lay out an mapping exchange log item. */
893 struct xfs_xmi_log_format {
894 uint16_t xmi_type; /* xmi log item type */
895 uint16_t xmi_size; /* size of this item */
896 uint32_t __pad; /* must be zero */
897 uint64_t xmi_id; /* xmi identifier */
898
899 uint64_t xmi_inode1; /* inumber of first file */
900 uint64_t xmi_inode2; /* inumber of second file */
901 uint32_t xmi_igen1; /* generation of first file */
902 uint32_t xmi_igen2; /* generation of second file */
903 uint64_t xmi_startoff1; /* block offset into file1 */
904 uint64_t xmi_startoff2; /* block offset into file2 */
905 uint64_t xmi_blockcount; /* number of blocks */
906 uint64_t xmi_flags; /* XFS_EXCHMAPS_* */
907 uint64_t xmi_isize1; /* intended file1 size */
908 uint64_t xmi_isize2; /* intended file2 size */
909 };
910
911 /* Exchange mappings between extended attribute forks instead of data forks. */
912 #define XFS_EXCHMAPS_ATTR_FORK (1ULL << 0)
913
914 /* Set the file sizes when finished. */
915 #define XFS_EXCHMAPS_SET_SIZES (1ULL << 1)
916
917 /*
918 * Exchange the mappings of the two files only if the file allocation units
919 * mapped to file1's range have been written.
920 */
921 #define XFS_EXCHMAPS_INO1_WRITTEN (1ULL << 2)
922
923 /* Clear the reflink flag from inode1 after the operation. */
924 #define XFS_EXCHMAPS_CLEAR_INO1_REFLINK (1ULL << 3)
925
926 /* Clear the reflink flag from inode2 after the operation. */
927 #define XFS_EXCHMAPS_CLEAR_INO2_REFLINK (1ULL << 4)
928
929 #define XFS_EXCHMAPS_LOGGED_FLAGS (XFS_EXCHMAPS_ATTR_FORK | \
930 XFS_EXCHMAPS_SET_SIZES | \
931 XFS_EXCHMAPS_INO1_WRITTEN | \
932 XFS_EXCHMAPS_CLEAR_INO1_REFLINK | \
933 XFS_EXCHMAPS_CLEAR_INO2_REFLINK)
934
935 /* This is the structure used to lay out an mapping exchange done log item. */
936 struct xfs_xmd_log_format {
937 uint16_t xmd_type; /* xmd log item type */
938 uint16_t xmd_size; /* size of this item */
939 uint32_t __pad;
940 uint64_t xmd_xmi_id; /* id of corresponding xmi */
941 };
942
943 /*
944 * Dquot Log format definitions.
945 *
946 * The first two fields must be the type and size fitting into
947 * 32 bits : log_recovery code assumes that.
948 */
949 typedef struct xfs_dq_logformat {
950 uint16_t qlf_type; /* dquot log item type */
951 uint16_t qlf_size; /* size of this item */
952 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */
953 int64_t qlf_blkno; /* blkno of dquot buffer */
954 int32_t qlf_len; /* len of dquot buffer */
955 uint32_t qlf_boffset; /* off of dquot in buffer */
956 } xfs_dq_logformat_t;
957
958 /*
959 * log format struct for QUOTAOFF records.
960 * The first two fields must be the type and size fitting into
961 * 32 bits : log_recovery code assumes that.
962 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer
963 * to the first and ensures that the first logitem is taken out of the AIL
964 * only when the last one is securely committed.
965 */
966 typedef struct xfs_qoff_logformat {
967 unsigned short qf_type; /* quotaoff log item type */
968 unsigned short qf_size; /* size of this item */
969 unsigned int qf_flags; /* USR and/or GRP */
970 char qf_pad[12]; /* padding for future */
971 } xfs_qoff_logformat_t;
972
973 /*
974 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
975 */
976 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */
977 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */
978 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */
979 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */
980 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */
981 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */
982 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */
983
984 /*
985 * Conversion to and from the combined OQUOTA flag (if necessary)
986 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk()
987 */
988 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */
989 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */
990 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */
991 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */
992
993 #define XFS_ALL_QUOTA_ACCT \
994 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT)
995 #define XFS_ALL_QUOTA_ENFD \
996 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD)
997 #define XFS_ALL_QUOTA_CHKD \
998 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD)
999
1000 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
1001 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
1002 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\
1003 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\
1004 XFS_PQUOTA_CHKD)
1005
1006 /*
1007 * Inode create log item structure
1008 *
1009 * Log recovery assumes the first two entries are the type and size and they fit
1010 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so
1011 * decoding can be done correctly.
1012 */
1013 struct xfs_icreate_log {
1014 uint16_t icl_type; /* type of log format structure */
1015 uint16_t icl_size; /* size of log format structure */
1016 __be32 icl_ag; /* ag being allocated in */
1017 __be32 icl_agbno; /* start block of inode range */
1018 __be32 icl_count; /* number of inodes to initialise */
1019 __be32 icl_isize; /* size of inodes */
1020 __be32 icl_length; /* length of extent to initialise */
1021 __be32 icl_gen; /* inode generation number to use */
1022 };
1023
1024 /*
1025 * Flags for deferred attribute operations.
1026 * Upper bits are flags, lower byte is type code
1027 */
1028 #define XFS_ATTRI_OP_FLAGS_SET 1 /* Set the attribute */
1029 #define XFS_ATTRI_OP_FLAGS_REMOVE 2 /* Remove the attribute */
1030 #define XFS_ATTRI_OP_FLAGS_REPLACE 3 /* Replace the attribute */
1031 #define XFS_ATTRI_OP_FLAGS_PPTR_SET 4 /* Set parent pointer */
1032 #define XFS_ATTRI_OP_FLAGS_PPTR_REMOVE 5 /* Remove parent pointer */
1033 #define XFS_ATTRI_OP_FLAGS_PPTR_REPLACE 6 /* Replace parent pointer */
1034 #define XFS_ATTRI_OP_FLAGS_TYPE_MASK 0xFF /* Flags type mask */
1035
1036 /*
1037 * alfi_attr_filter captures the state of xfs_da_args.attr_filter, so it should
1038 * never have any other bits set.
1039 */
1040 #define XFS_ATTRI_FILTER_MASK (XFS_ATTR_ROOT | \
1041 XFS_ATTR_SECURE | \
1042 XFS_ATTR_PARENT | \
1043 XFS_ATTR_INCOMPLETE)
1044
1045 /*
1046 * This is the structure used to lay out an attr log item in the
1047 * log.
1048 */
1049 struct xfs_attri_log_format {
1050 uint16_t alfi_type; /* attri log item type */
1051 uint16_t alfi_size; /* size of this item */
1052 uint32_t alfi_igen; /* generation of alfi_ino for pptr ops */
1053 uint64_t alfi_id; /* attri identifier */
1054 uint64_t alfi_ino; /* the inode for this attr operation */
1055 uint32_t alfi_op_flags; /* marks the op as a set or remove */
1056 union {
1057 uint32_t alfi_name_len; /* attr name length */
1058 struct {
1059 /*
1060 * For PPTR_REPLACE, these are the lengths of the old
1061 * and new attr names. The new and old values must
1062 * have the same length.
1063 */
1064 uint16_t alfi_old_name_len;
1065 uint16_t alfi_new_name_len;
1066 };
1067 };
1068 uint32_t alfi_value_len; /* attr value length */
1069 uint32_t alfi_attr_filter;/* attr filter flags */
1070 };
1071
1072 struct xfs_attrd_log_format {
1073 uint16_t alfd_type; /* attrd log item type */
1074 uint16_t alfd_size; /* size of this item */
1075 uint32_t __pad; /* pad to 64 bit aligned */
1076 uint64_t alfd_alf_id; /* id of corresponding attri */
1077 };
1078
1079 #endif /* __XFS_LOG_FORMAT_H__ */
1080