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 #define XFS_LI_EFI_RT 0x124a /* realtime extent free intent */
252 #define XFS_LI_EFD_RT 0x124b /* realtime extent free done */
253 #define XFS_LI_RUI_RT 0x124c /* realtime rmap update intent */
254 #define XFS_LI_RUD_RT 0x124d /* realtime rmap update done */
255 #define XFS_LI_CUI_RT 0x124e /* realtime refcount update intent */
256 #define XFS_LI_CUD_RT 0x124f /* realtime refcount update done */
257
258 #define XFS_LI_TYPE_DESC \
259 { XFS_LI_EFI, "XFS_LI_EFI" }, \
260 { XFS_LI_EFD, "XFS_LI_EFD" }, \
261 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \
262 { XFS_LI_INODE, "XFS_LI_INODE" }, \
263 { XFS_LI_BUF, "XFS_LI_BUF" }, \
264 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \
265 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \
266 { XFS_LI_ICREATE, "XFS_LI_ICREATE" }, \
267 { XFS_LI_RUI, "XFS_LI_RUI" }, \
268 { XFS_LI_RUD, "XFS_LI_RUD" }, \
269 { XFS_LI_CUI, "XFS_LI_CUI" }, \
270 { XFS_LI_CUD, "XFS_LI_CUD" }, \
271 { XFS_LI_BUI, "XFS_LI_BUI" }, \
272 { XFS_LI_BUD, "XFS_LI_BUD" }, \
273 { XFS_LI_ATTRI, "XFS_LI_ATTRI" }, \
274 { XFS_LI_ATTRD, "XFS_LI_ATTRD" }, \
275 { XFS_LI_XMI, "XFS_LI_XMI" }, \
276 { XFS_LI_XMD, "XFS_LI_XMD" }, \
277 { XFS_LI_EFI_RT, "XFS_LI_EFI_RT" }, \
278 { XFS_LI_EFD_RT, "XFS_LI_EFD_RT" }, \
279 { XFS_LI_RUI_RT, "XFS_LI_RUI_RT" }, \
280 { XFS_LI_RUD_RT, "XFS_LI_RUD_RT" }, \
281 { XFS_LI_CUI_RT, "XFS_LI_CUI_RT" }, \
282 { XFS_LI_CUD_RT, "XFS_LI_CUD_RT" }
283
284 /*
285 * Inode Log Item Format definitions.
286 *
287 * This is the structure used to lay out an inode log item in the
288 * log. The size of the inline data/extents/b-tree root to be logged
289 * (if any) is indicated in the ilf_dsize field. Changes to this structure
290 * must be added on to the end.
291 */
292 struct xfs_inode_log_format {
293 uint16_t ilf_type; /* inode log item type */
294 uint16_t ilf_size; /* size of this item */
295 uint32_t ilf_fields; /* flags for fields logged */
296 uint16_t ilf_asize; /* size of attr d/ext/root */
297 uint16_t ilf_dsize; /* size of data/ext/root */
298 uint32_t ilf_pad; /* pad for 64 bit boundary */
299 uint64_t ilf_ino; /* inode number */
300 union {
301 uint32_t ilfu_rdev; /* rdev value for dev inode*/
302 uint8_t __pad[16]; /* unused */
303 } ilf_u;
304 int64_t ilf_blkno; /* blkno of inode buffer */
305 int32_t ilf_len; /* len of inode buffer */
306 int32_t ilf_boffset; /* off of inode in buffer */
307 };
308
309 /*
310 * Old 32 bit systems will log in this format without the 64 bit
311 * alignment padding. Recovery will detect this and convert it to the
312 * correct format.
313 */
314 struct xfs_inode_log_format_32 {
315 uint16_t ilf_type; /* inode log item type */
316 uint16_t ilf_size; /* size of this item */
317 uint32_t ilf_fields; /* flags for fields logged */
318 uint16_t ilf_asize; /* size of attr d/ext/root */
319 uint16_t ilf_dsize; /* size of data/ext/root */
320 uint64_t ilf_ino; /* inode number */
321 union {
322 uint32_t ilfu_rdev; /* rdev value for dev inode*/
323 uint8_t __pad[16]; /* unused */
324 } ilf_u;
325 int64_t ilf_blkno; /* blkno of inode buffer */
326 int32_t ilf_len; /* len of inode buffer */
327 int32_t ilf_boffset; /* off of inode in buffer */
328 } __attribute__((packed));
329
330
331 /*
332 * Flags for xfs_trans_log_inode flags field.
333 */
334 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */
335 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */
336 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */
337 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */
338 #define XFS_ILOG_DEV 0x010 /* log the dev field */
339 #define XFS_ILOG_UUID 0x020 /* added long ago, but never used */
340 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */
341 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */
342 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */
343 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */
344 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */
345
346 /*
347 * The timestamps are dirty, but not necessarily anything else in the inode
348 * core. Unlike the other fields above this one must never make it to disk
349 * in the ilf_fields of the inode_log_format, but is purely store in-memory in
350 * ili_fields in the inode_log_item.
351 */
352 #define XFS_ILOG_TIMESTAMP 0x4000
353
354 /*
355 * The version field has been changed, but not necessarily anything else of
356 * interest. This must never make it to disk - it is used purely to ensure that
357 * the inode item ->precommit operation can update the fsync flag triggers
358 * in the inode item correctly.
359 */
360 #define XFS_ILOG_IVERSION 0x8000
361
362 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
363 XFS_ILOG_DBROOT)
364
365 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
366 XFS_ILOG_ABROOT)
367
368 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
369 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
370 XFS_ILOG_DEV | XFS_ILOG_ADATA | \
371 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \
372 XFS_ILOG_TIMESTAMP | XFS_ILOG_DOWNER | \
373 XFS_ILOG_AOWNER)
374
xfs_ilog_fbroot(int w)375 static inline int xfs_ilog_fbroot(int w)
376 {
377 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
378 }
379
xfs_ilog_fext(int w)380 static inline int xfs_ilog_fext(int w)
381 {
382 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
383 }
384
xfs_ilog_fdata(int w)385 static inline int xfs_ilog_fdata(int w)
386 {
387 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
388 }
389
390 /*
391 * Incore version of the on-disk inode core structures. We log this directly
392 * into the journal in host CPU format (for better or worse) and as such
393 * directly mirrors the xfs_dinode structure as it must contain all the same
394 * information.
395 */
396 typedef uint64_t xfs_log_timestamp_t;
397
398 /* Legacy timestamp encoding format. */
399 struct xfs_log_legacy_timestamp {
400 int32_t t_sec; /* timestamp seconds */
401 int32_t t_nsec; /* timestamp nanoseconds */
402 };
403
404 /*
405 * Define the format of the inode core that is logged. This structure must be
406 * kept identical to struct xfs_dinode except for the endianness annotations.
407 */
408 struct xfs_log_dinode {
409 uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
410 uint16_t di_mode; /* mode and type of file */
411 int8_t di_version; /* inode version */
412 int8_t di_format; /* format of di_c data */
413 uint16_t di_metatype; /* metadata type, if DIFLAG2_METADATA */
414 uint32_t di_uid; /* owner's user id */
415 uint32_t di_gid; /* owner's group id */
416 uint32_t di_nlink; /* number of links to file */
417 uint16_t di_projid_lo; /* lower part of owner's project id */
418 uint16_t di_projid_hi; /* higher part of owner's project id */
419 union {
420 /* Number of data fork extents if NREXT64 is set */
421 uint64_t di_big_nextents;
422
423 /* Padding for V3 inodes without NREXT64 set. */
424 uint64_t di_v3_pad;
425
426 /* Padding and inode flush counter for V2 inodes. */
427 struct {
428 uint8_t di_v2_pad[6]; /* V2 inode zeroed space */
429 uint16_t di_flushiter; /* V2 inode incremented on flush */
430 };
431 };
432 xfs_log_timestamp_t di_atime; /* time last accessed */
433 xfs_log_timestamp_t di_mtime; /* time last modified */
434 xfs_log_timestamp_t di_ctime; /* time created/inode modified */
435 xfs_fsize_t di_size; /* number of bytes in file */
436 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */
437 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
438 union {
439 /*
440 * For V2 inodes and V3 inodes without NREXT64 set, this
441 * is the number of data and attr fork extents.
442 */
443 struct {
444 uint32_t di_nextents;
445 uint16_t di_anextents;
446 } __packed;
447
448 /* Number of attr fork extents if NREXT64 is set. */
449 struct {
450 uint32_t di_big_anextents;
451 uint16_t di_nrext64_pad;
452 } __packed;
453 } __packed;
454 uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
455 int8_t di_aformat; /* format of attr fork's data */
456 uint32_t di_dmevmask; /* DMIG event mask */
457 uint16_t di_dmstate; /* DMIG state info */
458 uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
459 uint32_t di_gen; /* generation number */
460
461 /* di_next_unlinked is the only non-core field in the old dinode */
462 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */
463
464 /* start of the extended dinode, writable fields */
465 uint32_t di_crc; /* CRC of the inode */
466 uint64_t di_changecount; /* number of attribute changes */
467
468 /*
469 * The LSN we write to this field during formatting is not a reflection
470 * of the current on-disk LSN. It should never be used for recovery
471 * sequencing, nor should it be recovered into the on-disk inode at all.
472 * See xlog_recover_inode_commit_pass2() and xfs_log_dinode_to_disk()
473 * for details.
474 */
475 xfs_lsn_t di_lsn;
476
477 uint64_t di_flags2; /* more random flags */
478 uint32_t di_cowextsize; /* basic cow extent size for file */
479 uint8_t di_pad2[12]; /* more padding for future expansion */
480
481 /* fields only written to during inode creation */
482 xfs_log_timestamp_t di_crtime; /* time created */
483 xfs_ino_t di_ino; /* inode number */
484 uuid_t di_uuid; /* UUID of the filesystem */
485
486 /* structure must be padded to 64 bit alignment */
487 };
488
489 #define xfs_log_dinode_size(mp) \
490 (xfs_has_v3inodes((mp)) ? \
491 sizeof(struct xfs_log_dinode) : \
492 offsetof(struct xfs_log_dinode, di_next_unlinked))
493
494 /*
495 * Buffer Log Format definitions
496 *
497 * These are the physical dirty bitmap definitions for the log format structure.
498 */
499 #define XFS_BLF_CHUNK 128
500 #define XFS_BLF_SHIFT 7
501 #define BIT_TO_WORD_SHIFT 5
502 #define NBWORD (NBBY * sizeof(unsigned int))
503
504 /*
505 * This flag indicates that the buffer contains on disk inodes
506 * and requires special recovery handling.
507 */
508 #define XFS_BLF_INODE_BUF (1<<0)
509
510 /*
511 * This flag indicates that the buffer should not be replayed
512 * during recovery because its blocks are being freed.
513 */
514 #define XFS_BLF_CANCEL (1<<1)
515
516 /*
517 * This flag indicates that the buffer contains on disk
518 * user or group dquots and may require special recovery handling.
519 */
520 #define XFS_BLF_UDQUOT_BUF (1<<2)
521 #define XFS_BLF_PDQUOT_BUF (1<<3)
522 #define XFS_BLF_GDQUOT_BUF (1<<4)
523
524 /*
525 * This is the structure used to lay out a buf log item in the log. The data
526 * map describes which 128 byte chunks of the buffer have been logged.
527 *
528 * The placement of blf_map_size causes blf_data_map to start at an odd
529 * multiple of sizeof(unsigned int) offset within the struct. Because the data
530 * bitmap size will always be an even number, the end of the data_map (and
531 * therefore the structure) will also be at an odd multiple of sizeof(unsigned
532 * int). Some 64-bit compilers will insert padding at the end of the struct to
533 * ensure 64-bit alignment of blf_blkno, but 32-bit ones will not. Therefore,
534 * XFS_BLF_DATAMAP_SIZE must be an odd number to make the padding explicit and
535 * keep the structure size consistent between 32-bit and 64-bit platforms.
536 */
537 #define __XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD)
538 #define XFS_BLF_DATAMAP_SIZE (__XFS_BLF_DATAMAP_SIZE + 1)
539
540 typedef struct xfs_buf_log_format {
541 unsigned short blf_type; /* buf log item type indicator */
542 unsigned short blf_size; /* size of this item */
543 unsigned short blf_flags; /* misc state */
544 unsigned short blf_len; /* number of blocks in this buf */
545 int64_t blf_blkno; /* starting blkno of this buf */
546 unsigned int blf_map_size; /* used size of data bitmap in words */
547 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */
548 } xfs_buf_log_format_t;
549
550 /*
551 * All buffers now need to tell recovery where the magic number
552 * is so that it can verify and calculate the CRCs on the buffer correctly
553 * once the changes have been replayed into the buffer.
554 *
555 * The type value is held in the upper 5 bits of the blf_flags field, which is
556 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down.
557 */
558 #define XFS_BLFT_BITS 5
559 #define XFS_BLFT_SHIFT 11
560 #define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT)
561
562 enum xfs_blft {
563 XFS_BLFT_UNKNOWN_BUF = 0,
564 XFS_BLFT_UDQUOT_BUF,
565 XFS_BLFT_PDQUOT_BUF,
566 XFS_BLFT_GDQUOT_BUF,
567 XFS_BLFT_BTREE_BUF,
568 XFS_BLFT_AGF_BUF,
569 XFS_BLFT_AGFL_BUF,
570 XFS_BLFT_AGI_BUF,
571 XFS_BLFT_DINO_BUF,
572 XFS_BLFT_SYMLINK_BUF,
573 XFS_BLFT_DIR_BLOCK_BUF,
574 XFS_BLFT_DIR_DATA_BUF,
575 XFS_BLFT_DIR_FREE_BUF,
576 XFS_BLFT_DIR_LEAF1_BUF,
577 XFS_BLFT_DIR_LEAFN_BUF,
578 XFS_BLFT_DA_NODE_BUF,
579 XFS_BLFT_ATTR_LEAF_BUF,
580 XFS_BLFT_ATTR_RMT_BUF,
581 XFS_BLFT_SB_BUF,
582 XFS_BLFT_RTBITMAP_BUF,
583 XFS_BLFT_RTSUMMARY_BUF,
584 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS),
585 };
586
587 static inline void
xfs_blft_to_flags(struct xfs_buf_log_format * blf,enum xfs_blft type)588 xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type)
589 {
590 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF);
591 blf->blf_flags &= ~XFS_BLFT_MASK;
592 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK);
593 }
594
595 static inline uint16_t
xfs_blft_from_flags(struct xfs_buf_log_format * blf)596 xfs_blft_from_flags(struct xfs_buf_log_format *blf)
597 {
598 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT;
599 }
600
601 /*
602 * EFI/EFD log format definitions
603 */
604 typedef struct xfs_extent {
605 xfs_fsblock_t ext_start;
606 xfs_extlen_t ext_len;
607 } xfs_extent_t;
608
609 /*
610 * Since an xfs_extent_t has types (start:64, len: 32)
611 * there are different alignments on 32 bit and 64 bit kernels.
612 * So we provide the different variants for use by a
613 * conversion routine.
614 */
615 typedef struct xfs_extent_32 {
616 uint64_t ext_start;
617 uint32_t ext_len;
618 } __attribute__((packed)) xfs_extent_32_t;
619
620 typedef struct xfs_extent_64 {
621 uint64_t ext_start;
622 uint32_t ext_len;
623 uint32_t ext_pad;
624 } xfs_extent_64_t;
625
626 /*
627 * This is the structure used to lay out an efi log item in the
628 * log. The efi_extents field is a variable size array whose
629 * size is given by efi_nextents.
630 */
631 typedef struct xfs_efi_log_format {
632 uint16_t efi_type; /* efi log item type */
633 uint16_t efi_size; /* size of this item */
634 uint32_t efi_nextents; /* # extents to free */
635 uint64_t efi_id; /* efi identifier */
636 xfs_extent_t efi_extents[]; /* array of extents to free */
637 } xfs_efi_log_format_t;
638
639 static inline size_t
xfs_efi_log_format_sizeof(unsigned int nr)640 xfs_efi_log_format_sizeof(
641 unsigned int nr)
642 {
643 return sizeof(struct xfs_efi_log_format) +
644 nr * sizeof(struct xfs_extent);
645 }
646
647 typedef struct xfs_efi_log_format_32 {
648 uint16_t efi_type; /* efi log item type */
649 uint16_t efi_size; /* size of this item */
650 uint32_t efi_nextents; /* # extents to free */
651 uint64_t efi_id; /* efi identifier */
652 xfs_extent_32_t efi_extents[]; /* array of extents to free */
653 } __attribute__((packed)) xfs_efi_log_format_32_t;
654
655 static inline size_t
xfs_efi_log_format32_sizeof(unsigned int nr)656 xfs_efi_log_format32_sizeof(
657 unsigned int nr)
658 {
659 return sizeof(struct xfs_efi_log_format_32) +
660 nr * sizeof(struct xfs_extent_32);
661 }
662
663 typedef struct xfs_efi_log_format_64 {
664 uint16_t efi_type; /* efi log item type */
665 uint16_t efi_size; /* size of this item */
666 uint32_t efi_nextents; /* # extents to free */
667 uint64_t efi_id; /* efi identifier */
668 xfs_extent_64_t efi_extents[]; /* array of extents to free */
669 } xfs_efi_log_format_64_t;
670
671 static inline size_t
xfs_efi_log_format64_sizeof(unsigned int nr)672 xfs_efi_log_format64_sizeof(
673 unsigned int nr)
674 {
675 return sizeof(struct xfs_efi_log_format_64) +
676 nr * sizeof(struct xfs_extent_64);
677 }
678
679 /*
680 * This is the structure used to lay out an efd log item in the
681 * log. The efd_extents array is a variable size array whose
682 * size is given by efd_nextents;
683 */
684 typedef struct xfs_efd_log_format {
685 uint16_t efd_type; /* efd log item type */
686 uint16_t efd_size; /* size of this item */
687 uint32_t efd_nextents; /* # of extents freed */
688 uint64_t efd_efi_id; /* id of corresponding efi */
689 xfs_extent_t efd_extents[]; /* array of extents freed */
690 } xfs_efd_log_format_t;
691
692 static inline size_t
xfs_efd_log_format_sizeof(unsigned int nr)693 xfs_efd_log_format_sizeof(
694 unsigned int nr)
695 {
696 return sizeof(struct xfs_efd_log_format) +
697 nr * sizeof(struct xfs_extent);
698 }
699
700 typedef struct xfs_efd_log_format_32 {
701 uint16_t efd_type; /* efd log item type */
702 uint16_t efd_size; /* size of this item */
703 uint32_t efd_nextents; /* # of extents freed */
704 uint64_t efd_efi_id; /* id of corresponding efi */
705 xfs_extent_32_t efd_extents[]; /* array of extents freed */
706 } __attribute__((packed)) xfs_efd_log_format_32_t;
707
708 static inline size_t
xfs_efd_log_format32_sizeof(unsigned int nr)709 xfs_efd_log_format32_sizeof(
710 unsigned int nr)
711 {
712 return sizeof(struct xfs_efd_log_format_32) +
713 nr * sizeof(struct xfs_extent_32);
714 }
715
716 typedef struct xfs_efd_log_format_64 {
717 uint16_t efd_type; /* efd log item type */
718 uint16_t efd_size; /* size of this item */
719 uint32_t efd_nextents; /* # of extents freed */
720 uint64_t efd_efi_id; /* id of corresponding efi */
721 xfs_extent_64_t efd_extents[]; /* array of extents freed */
722 } xfs_efd_log_format_64_t;
723
724 static inline size_t
xfs_efd_log_format64_sizeof(unsigned int nr)725 xfs_efd_log_format64_sizeof(
726 unsigned int nr)
727 {
728 return sizeof(struct xfs_efd_log_format_64) +
729 nr * sizeof(struct xfs_extent_64);
730 }
731
732 /*
733 * RUI/RUD (reverse mapping) log format definitions
734 */
735 struct xfs_map_extent {
736 uint64_t me_owner;
737 uint64_t me_startblock;
738 uint64_t me_startoff;
739 uint32_t me_len;
740 uint32_t me_flags;
741 };
742
743 /* rmap me_flags: upper bits are flags, lower byte is type code */
744 #define XFS_RMAP_EXTENT_MAP 1
745 #define XFS_RMAP_EXTENT_MAP_SHARED 2
746 #define XFS_RMAP_EXTENT_UNMAP 3
747 #define XFS_RMAP_EXTENT_UNMAP_SHARED 4
748 #define XFS_RMAP_EXTENT_CONVERT 5
749 #define XFS_RMAP_EXTENT_CONVERT_SHARED 6
750 #define XFS_RMAP_EXTENT_ALLOC 7
751 #define XFS_RMAP_EXTENT_FREE 8
752 #define XFS_RMAP_EXTENT_TYPE_MASK 0xFF
753
754 #define XFS_RMAP_EXTENT_ATTR_FORK (1U << 31)
755 #define XFS_RMAP_EXTENT_BMBT_BLOCK (1U << 30)
756 #define XFS_RMAP_EXTENT_UNWRITTEN (1U << 29)
757
758 #define XFS_RMAP_EXTENT_FLAGS (XFS_RMAP_EXTENT_TYPE_MASK | \
759 XFS_RMAP_EXTENT_ATTR_FORK | \
760 XFS_RMAP_EXTENT_BMBT_BLOCK | \
761 XFS_RMAP_EXTENT_UNWRITTEN)
762
763 /*
764 * This is the structure used to lay out an rui log item in the
765 * log. The rui_extents field is a variable size array whose
766 * size is given by rui_nextents.
767 */
768 struct xfs_rui_log_format {
769 uint16_t rui_type; /* rui log item type */
770 uint16_t rui_size; /* size of this item */
771 uint32_t rui_nextents; /* # extents to free */
772 uint64_t rui_id; /* rui identifier */
773 struct xfs_map_extent rui_extents[]; /* array of extents to rmap */
774 };
775
776 static inline size_t
xfs_rui_log_format_sizeof(unsigned int nr)777 xfs_rui_log_format_sizeof(
778 unsigned int nr)
779 {
780 return sizeof(struct xfs_rui_log_format) +
781 nr * sizeof(struct xfs_map_extent);
782 }
783
784 /*
785 * This is the structure used to lay out an rud log item in the
786 * log. The rud_extents array is a variable size array whose
787 * size is given by rud_nextents;
788 */
789 struct xfs_rud_log_format {
790 uint16_t rud_type; /* rud log item type */
791 uint16_t rud_size; /* size of this item */
792 uint32_t __pad;
793 uint64_t rud_rui_id; /* id of corresponding rui */
794 };
795
796 /*
797 * CUI/CUD (refcount update) log format definitions
798 */
799 struct xfs_phys_extent {
800 uint64_t pe_startblock;
801 uint32_t pe_len;
802 uint32_t pe_flags;
803 };
804
805 /* refcount pe_flags: upper bits are flags, lower byte is type code */
806 /* Type codes are taken directly from enum xfs_refcount_intent_type. */
807 #define XFS_REFCOUNT_EXTENT_TYPE_MASK 0xFF
808
809 #define XFS_REFCOUNT_EXTENT_FLAGS (XFS_REFCOUNT_EXTENT_TYPE_MASK)
810
811 /*
812 * This is the structure used to lay out a cui log item in the
813 * log. The cui_extents field is a variable size array whose
814 * size is given by cui_nextents.
815 */
816 struct xfs_cui_log_format {
817 uint16_t cui_type; /* cui log item type */
818 uint16_t cui_size; /* size of this item */
819 uint32_t cui_nextents; /* # extents to free */
820 uint64_t cui_id; /* cui identifier */
821 struct xfs_phys_extent cui_extents[]; /* array of extents */
822 };
823
824 static inline size_t
xfs_cui_log_format_sizeof(unsigned int nr)825 xfs_cui_log_format_sizeof(
826 unsigned int nr)
827 {
828 return sizeof(struct xfs_cui_log_format) +
829 nr * sizeof(struct xfs_phys_extent);
830 }
831
832 /*
833 * This is the structure used to lay out a cud log item in the
834 * log. The cud_extents array is a variable size array whose
835 * size is given by cud_nextents;
836 */
837 struct xfs_cud_log_format {
838 uint16_t cud_type; /* cud log item type */
839 uint16_t cud_size; /* size of this item */
840 uint32_t __pad;
841 uint64_t cud_cui_id; /* id of corresponding cui */
842 };
843
844 /*
845 * BUI/BUD (inode block mapping) log format definitions
846 */
847
848 /* bmbt me_flags: upper bits are flags, lower byte is type code */
849 /* Type codes are taken directly from enum xfs_bmap_intent_type. */
850 #define XFS_BMAP_EXTENT_TYPE_MASK 0xFF
851
852 #define XFS_BMAP_EXTENT_ATTR_FORK (1U << 31)
853 #define XFS_BMAP_EXTENT_UNWRITTEN (1U << 30)
854 #define XFS_BMAP_EXTENT_REALTIME (1U << 29)
855
856 #define XFS_BMAP_EXTENT_FLAGS (XFS_BMAP_EXTENT_TYPE_MASK | \
857 XFS_BMAP_EXTENT_ATTR_FORK | \
858 XFS_BMAP_EXTENT_UNWRITTEN | \
859 XFS_BMAP_EXTENT_REALTIME)
860
861 /*
862 * This is the structure used to lay out an bui log item in the
863 * log. The bui_extents field is a variable size array whose
864 * size is given by bui_nextents.
865 */
866 struct xfs_bui_log_format {
867 uint16_t bui_type; /* bui log item type */
868 uint16_t bui_size; /* size of this item */
869 uint32_t bui_nextents; /* # extents to free */
870 uint64_t bui_id; /* bui identifier */
871 struct xfs_map_extent bui_extents[]; /* array of extents to bmap */
872 };
873
874 static inline size_t
xfs_bui_log_format_sizeof(unsigned int nr)875 xfs_bui_log_format_sizeof(
876 unsigned int nr)
877 {
878 return sizeof(struct xfs_bui_log_format) +
879 nr * sizeof(struct xfs_map_extent);
880 }
881
882 /*
883 * This is the structure used to lay out an bud log item in the
884 * log. The bud_extents array is a variable size array whose
885 * size is given by bud_nextents;
886 */
887 struct xfs_bud_log_format {
888 uint16_t bud_type; /* bud log item type */
889 uint16_t bud_size; /* size of this item */
890 uint32_t __pad;
891 uint64_t bud_bui_id; /* id of corresponding bui */
892 };
893
894 /*
895 * XMI/XMD (file mapping exchange) log format definitions
896 */
897
898 /* This is the structure used to lay out an mapping exchange log item. */
899 struct xfs_xmi_log_format {
900 uint16_t xmi_type; /* xmi log item type */
901 uint16_t xmi_size; /* size of this item */
902 uint32_t __pad; /* must be zero */
903 uint64_t xmi_id; /* xmi identifier */
904
905 uint64_t xmi_inode1; /* inumber of first file */
906 uint64_t xmi_inode2; /* inumber of second file */
907 uint32_t xmi_igen1; /* generation of first file */
908 uint32_t xmi_igen2; /* generation of second file */
909 uint64_t xmi_startoff1; /* block offset into file1 */
910 uint64_t xmi_startoff2; /* block offset into file2 */
911 uint64_t xmi_blockcount; /* number of blocks */
912 uint64_t xmi_flags; /* XFS_EXCHMAPS_* */
913 uint64_t xmi_isize1; /* intended file1 size */
914 uint64_t xmi_isize2; /* intended file2 size */
915 };
916
917 /* Exchange mappings between extended attribute forks instead of data forks. */
918 #define XFS_EXCHMAPS_ATTR_FORK (1ULL << 0)
919
920 /* Set the file sizes when finished. */
921 #define XFS_EXCHMAPS_SET_SIZES (1ULL << 1)
922
923 /*
924 * Exchange the mappings of the two files only if the file allocation units
925 * mapped to file1's range have been written.
926 */
927 #define XFS_EXCHMAPS_INO1_WRITTEN (1ULL << 2)
928
929 /* Clear the reflink flag from inode1 after the operation. */
930 #define XFS_EXCHMAPS_CLEAR_INO1_REFLINK (1ULL << 3)
931
932 /* Clear the reflink flag from inode2 after the operation. */
933 #define XFS_EXCHMAPS_CLEAR_INO2_REFLINK (1ULL << 4)
934
935 #define XFS_EXCHMAPS_LOGGED_FLAGS (XFS_EXCHMAPS_ATTR_FORK | \
936 XFS_EXCHMAPS_SET_SIZES | \
937 XFS_EXCHMAPS_INO1_WRITTEN | \
938 XFS_EXCHMAPS_CLEAR_INO1_REFLINK | \
939 XFS_EXCHMAPS_CLEAR_INO2_REFLINK)
940
941 /* This is the structure used to lay out an mapping exchange done log item. */
942 struct xfs_xmd_log_format {
943 uint16_t xmd_type; /* xmd log item type */
944 uint16_t xmd_size; /* size of this item */
945 uint32_t __pad;
946 uint64_t xmd_xmi_id; /* id of corresponding xmi */
947 };
948
949 /*
950 * Dquot Log format definitions.
951 *
952 * The first two fields must be the type and size fitting into
953 * 32 bits : log_recovery code assumes that.
954 */
955 typedef struct xfs_dq_logformat {
956 uint16_t qlf_type; /* dquot log item type */
957 uint16_t qlf_size; /* size of this item */
958 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */
959 int64_t qlf_blkno; /* blkno of dquot buffer */
960 int32_t qlf_len; /* len of dquot buffer */
961 uint32_t qlf_boffset; /* off of dquot in buffer */
962 } xfs_dq_logformat_t;
963
964 /*
965 * log format struct for QUOTAOFF records.
966 * The first two fields must be the type and size fitting into
967 * 32 bits : log_recovery code assumes that.
968 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer
969 * to the first and ensures that the first logitem is taken out of the AIL
970 * only when the last one is securely committed.
971 */
972 typedef struct xfs_qoff_logformat {
973 unsigned short qf_type; /* quotaoff log item type */
974 unsigned short qf_size; /* size of this item */
975 unsigned int qf_flags; /* USR and/or GRP */
976 char qf_pad[12]; /* padding for future */
977 } xfs_qoff_logformat_t;
978
979 /*
980 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
981 */
982 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */
983 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */
984 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */
985 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */
986 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */
987 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */
988 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */
989
990 /*
991 * Conversion to and from the combined OQUOTA flag (if necessary)
992 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk()
993 */
994 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */
995 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */
996 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */
997 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */
998
999 #define XFS_ALL_QUOTA_ACCT \
1000 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT)
1001 #define XFS_ALL_QUOTA_ENFD \
1002 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD)
1003 #define XFS_ALL_QUOTA_CHKD \
1004 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD)
1005
1006 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
1007 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
1008 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\
1009 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\
1010 XFS_PQUOTA_CHKD)
1011
1012 /*
1013 * Inode create log item structure
1014 *
1015 * Log recovery assumes the first two entries are the type and size and they fit
1016 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so
1017 * decoding can be done correctly.
1018 */
1019 struct xfs_icreate_log {
1020 uint16_t icl_type; /* type of log format structure */
1021 uint16_t icl_size; /* size of log format structure */
1022 __be32 icl_ag; /* ag being allocated in */
1023 __be32 icl_agbno; /* start block of inode range */
1024 __be32 icl_count; /* number of inodes to initialise */
1025 __be32 icl_isize; /* size of inodes */
1026 __be32 icl_length; /* length of extent to initialise */
1027 __be32 icl_gen; /* inode generation number to use */
1028 };
1029
1030 /*
1031 * Flags for deferred attribute operations.
1032 * Upper bits are flags, lower byte is type code
1033 */
1034 #define XFS_ATTRI_OP_FLAGS_SET 1 /* Set the attribute */
1035 #define XFS_ATTRI_OP_FLAGS_REMOVE 2 /* Remove the attribute */
1036 #define XFS_ATTRI_OP_FLAGS_REPLACE 3 /* Replace the attribute */
1037 #define XFS_ATTRI_OP_FLAGS_PPTR_SET 4 /* Set parent pointer */
1038 #define XFS_ATTRI_OP_FLAGS_PPTR_REMOVE 5 /* Remove parent pointer */
1039 #define XFS_ATTRI_OP_FLAGS_PPTR_REPLACE 6 /* Replace parent pointer */
1040 #define XFS_ATTRI_OP_FLAGS_TYPE_MASK 0xFF /* Flags type mask */
1041
1042 /*
1043 * alfi_attr_filter captures the state of xfs_da_args.attr_filter, so it should
1044 * never have any other bits set.
1045 */
1046 #define XFS_ATTRI_FILTER_MASK (XFS_ATTR_ROOT | \
1047 XFS_ATTR_SECURE | \
1048 XFS_ATTR_PARENT | \
1049 XFS_ATTR_INCOMPLETE)
1050
1051 /*
1052 * This is the structure used to lay out an attr log item in the
1053 * log.
1054 */
1055 struct xfs_attri_log_format {
1056 uint16_t alfi_type; /* attri log item type */
1057 uint16_t alfi_size; /* size of this item */
1058 uint32_t alfi_igen; /* generation of alfi_ino for pptr ops */
1059 uint64_t alfi_id; /* attri identifier */
1060 uint64_t alfi_ino; /* the inode for this attr operation */
1061 uint32_t alfi_op_flags; /* marks the op as a set or remove */
1062 union {
1063 uint32_t alfi_name_len; /* attr name length */
1064 struct {
1065 /*
1066 * For PPTR_REPLACE, these are the lengths of the old
1067 * and new attr names. The new and old values must
1068 * have the same length.
1069 */
1070 uint16_t alfi_old_name_len;
1071 uint16_t alfi_new_name_len;
1072 };
1073 };
1074 uint32_t alfi_value_len; /* attr value length */
1075 uint32_t alfi_attr_filter;/* attr filter flags */
1076 };
1077
1078 struct xfs_attrd_log_format {
1079 uint16_t alfd_type; /* attrd log item type */
1080 uint16_t alfd_size; /* size of this item */
1081 uint32_t __pad; /* pad to 64 bit aligned */
1082 uint64_t alfd_alf_id; /* id of corresponding attri */
1083 };
1084
1085 #endif /* __XFS_LOG_FORMAT_H__ */
1086