1 /*
2 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18 #ifndef __XFS_LOG_FORMAT_H__
19 #define __XFS_LOG_FORMAT_H__
20
21 struct xfs_mount;
22 struct xfs_trans_res;
23
24 /*
25 * On-disk Log Format definitions.
26 *
27 * This file contains all the on-disk format definitions used within the log. It
28 * includes the physical log structure itself, as well as all the log item
29 * format structures that are written into the log and intepreted by log
30 * recovery. We start with the physical log format definitions, and then work
31 * through all the log items definitions and everything they encode into the
32 * log.
33 */
34 typedef __uint32_t xlog_tid_t;
35
36 #define XLOG_MIN_ICLOGS 2
37 #define XLOG_MAX_ICLOGS 8
38 #define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */
39 #define XLOG_VERSION_1 1
40 #define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */
41 #define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2)
42 #define XLOG_MIN_RECORD_BSIZE (16*1024) /* eventually 32k */
43 #define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */
44 #define XLOG_MAX_RECORD_BSIZE (256*1024)
45 #define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */
46 #define XLOG_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */
47 #define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */
48 #define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */
49 #define XLOG_BTOLSUNIT(log, b) (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \
50 (log)->l_mp->m_sb.sb_logsunit)
51 #define XLOG_LSUNITTOB(log, su) ((su) * (log)->l_mp->m_sb.sb_logsunit)
52
53 #define XLOG_HEADER_SIZE 512
54
55 /* Minimum number of transactions that must fit in the log (defined by mkfs) */
56 #define XFS_MIN_LOG_FACTOR 3
57
58 #define XLOG_REC_SHIFT(log) \
59 BTOBB(1 << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
60 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
61 #define XLOG_TOTAL_REC_SHIFT(log) \
62 BTOBB(XLOG_MAX_ICLOGS << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
63 XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
64
65 /* get lsn fields */
66 #define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
67 #define BLOCK_LSN(lsn) ((uint)(lsn))
68
69 /* this is used in a spot where we might otherwise double-endian-flip */
70 #define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0])
71
xlog_assign_lsn(uint cycle,uint block)72 static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block)
73 {
74 return ((xfs_lsn_t)cycle << 32) | block;
75 }
76
xlog_get_cycle(char * ptr)77 static inline uint xlog_get_cycle(char *ptr)
78 {
79 if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM)
80 return be32_to_cpu(*((__be32 *)ptr + 1));
81 else
82 return be32_to_cpu(*(__be32 *)ptr);
83 }
84
85 /* Log Clients */
86 #define XFS_TRANSACTION 0x69
87 #define XFS_VOLUME 0x2
88 #define XFS_LOG 0xaa
89
90 #define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */
91
92 /* Region types for iovec's i_type */
93 #define XLOG_REG_TYPE_BFORMAT 1
94 #define XLOG_REG_TYPE_BCHUNK 2
95 #define XLOG_REG_TYPE_EFI_FORMAT 3
96 #define XLOG_REG_TYPE_EFD_FORMAT 4
97 #define XLOG_REG_TYPE_IFORMAT 5
98 #define XLOG_REG_TYPE_ICORE 6
99 #define XLOG_REG_TYPE_IEXT 7
100 #define XLOG_REG_TYPE_IBROOT 8
101 #define XLOG_REG_TYPE_ILOCAL 9
102 #define XLOG_REG_TYPE_IATTR_EXT 10
103 #define XLOG_REG_TYPE_IATTR_BROOT 11
104 #define XLOG_REG_TYPE_IATTR_LOCAL 12
105 #define XLOG_REG_TYPE_QFORMAT 13
106 #define XLOG_REG_TYPE_DQUOT 14
107 #define XLOG_REG_TYPE_QUOTAOFF 15
108 #define XLOG_REG_TYPE_LRHEADER 16
109 #define XLOG_REG_TYPE_UNMOUNT 17
110 #define XLOG_REG_TYPE_COMMIT 18
111 #define XLOG_REG_TYPE_TRANSHDR 19
112 #define XLOG_REG_TYPE_ICREATE 20
113 #define XLOG_REG_TYPE_MAX 20
114
115 /*
116 * Flags to log operation header
117 *
118 * The first write of a new transaction will be preceded with a start
119 * record, XLOG_START_TRANS. Once a transaction is committed, a commit
120 * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into
121 * the remainder of the current active in-core log, it is split up into
122 * multiple regions. Each partial region will be marked with a
123 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS.
124 *
125 */
126 #define XLOG_START_TRANS 0x01 /* Start a new transaction */
127 #define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */
128 #define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */
129 #define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */
130 #define XLOG_END_TRANS 0x10 /* End a continued transaction */
131 #define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */
132
133
134 typedef struct xlog_op_header {
135 __be32 oh_tid; /* transaction id of operation : 4 b */
136 __be32 oh_len; /* bytes in data region : 4 b */
137 __u8 oh_clientid; /* who sent me this : 1 b */
138 __u8 oh_flags; /* : 1 b */
139 __u16 oh_res2; /* 32 bit align : 2 b */
140 } xlog_op_header_t;
141
142 /* valid values for h_fmt */
143 #define XLOG_FMT_UNKNOWN 0
144 #define XLOG_FMT_LINUX_LE 1
145 #define XLOG_FMT_LINUX_BE 2
146 #define XLOG_FMT_IRIX_BE 3
147
148 /* our fmt */
149 #ifdef XFS_NATIVE_HOST
150 #define XLOG_FMT XLOG_FMT_LINUX_BE
151 #else
152 #define XLOG_FMT XLOG_FMT_LINUX_LE
153 #endif
154
155 typedef struct xlog_rec_header {
156 __be32 h_magicno; /* log record (LR) identifier : 4 */
157 __be32 h_cycle; /* write cycle of log : 4 */
158 __be32 h_version; /* LR version : 4 */
159 __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */
160 __be64 h_lsn; /* lsn of this LR : 8 */
161 __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */
162 __le32 h_crc; /* crc of log record : 4 */
163 __be32 h_prev_block; /* block number to previous LR : 4 */
164 __be32 h_num_logops; /* number of log operations in this LR : 4 */
165 __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE];
166 /* new fields */
167 __be32 h_fmt; /* format of log record : 4 */
168 uuid_t h_fs_uuid; /* uuid of FS : 16 */
169 __be32 h_size; /* iclog size : 4 */
170 } xlog_rec_header_t;
171
172 typedef struct xlog_rec_ext_header {
173 __be32 xh_cycle; /* write cycle of log : 4 */
174 __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */
175 } xlog_rec_ext_header_t;
176
177 /*
178 * Quite misnamed, because this union lays out the actual on-disk log buffer.
179 */
180 typedef union xlog_in_core2 {
181 xlog_rec_header_t hic_header;
182 xlog_rec_ext_header_t hic_xheader;
183 char hic_sector[XLOG_HEADER_SIZE];
184 } xlog_in_core_2_t;
185
186 /* not an on-disk structure, but needed by log recovery in userspace */
187 typedef struct xfs_log_iovec {
188 void *i_addr; /* beginning address of region */
189 int i_len; /* length in bytes of region */
190 uint i_type; /* type of region */
191 } xfs_log_iovec_t;
192
193
194 /*
195 * Transaction Header definitions.
196 *
197 * This is the structure written in the log at the head of every transaction. It
198 * identifies the type and id of the transaction, and contains the number of
199 * items logged by the transaction so we know how many to expect during
200 * recovery.
201 *
202 * Do not change the below structure without redoing the code in
203 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
204 */
205 typedef struct xfs_trans_header {
206 uint th_magic; /* magic number */
207 uint th_type; /* transaction type */
208 __int32_t th_tid; /* transaction id (unused) */
209 uint th_num_items; /* num items logged by trans */
210 } xfs_trans_header_t;
211
212 #define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */
213
214 /*
215 * Log item types.
216 */
217 #define XFS_LI_EFI 0x1236
218 #define XFS_LI_EFD 0x1237
219 #define XFS_LI_IUNLINK 0x1238
220 #define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */
221 #define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */
222 #define XFS_LI_DQUOT 0x123d
223 #define XFS_LI_QUOTAOFF 0x123e
224 #define XFS_LI_ICREATE 0x123f
225
226 #define XFS_LI_TYPE_DESC \
227 { XFS_LI_EFI, "XFS_LI_EFI" }, \
228 { XFS_LI_EFD, "XFS_LI_EFD" }, \
229 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \
230 { XFS_LI_INODE, "XFS_LI_INODE" }, \
231 { XFS_LI_BUF, "XFS_LI_BUF" }, \
232 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \
233 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \
234 { XFS_LI_ICREATE, "XFS_LI_ICREATE" }
235
236 /*
237 * Inode Log Item Format definitions.
238 *
239 * This is the structure used to lay out an inode log item in the
240 * log. The size of the inline data/extents/b-tree root to be logged
241 * (if any) is indicated in the ilf_dsize field. Changes to this structure
242 * must be added on to the end.
243 */
244 typedef struct xfs_inode_log_format {
245 __uint16_t ilf_type; /* inode log item type */
246 __uint16_t ilf_size; /* size of this item */
247 __uint32_t ilf_fields; /* flags for fields logged */
248 __uint16_t ilf_asize; /* size of attr d/ext/root */
249 __uint16_t ilf_dsize; /* size of data/ext/root */
250 __uint64_t ilf_ino; /* inode number */
251 union {
252 __uint32_t ilfu_rdev; /* rdev value for dev inode*/
253 uuid_t ilfu_uuid; /* mount point value */
254 } ilf_u;
255 __int64_t ilf_blkno; /* blkno of inode buffer */
256 __int32_t ilf_len; /* len of inode buffer */
257 __int32_t ilf_boffset; /* off of inode in buffer */
258 } xfs_inode_log_format_t;
259
260 typedef struct xfs_inode_log_format_32 {
261 __uint16_t ilf_type; /* inode log item type */
262 __uint16_t ilf_size; /* size of this item */
263 __uint32_t ilf_fields; /* flags for fields logged */
264 __uint16_t ilf_asize; /* size of attr d/ext/root */
265 __uint16_t ilf_dsize; /* size of data/ext/root */
266 __uint64_t ilf_ino; /* inode number */
267 union {
268 __uint32_t ilfu_rdev; /* rdev value for dev inode*/
269 uuid_t ilfu_uuid; /* mount point value */
270 } ilf_u;
271 __int64_t ilf_blkno; /* blkno of inode buffer */
272 __int32_t ilf_len; /* len of inode buffer */
273 __int32_t ilf_boffset; /* off of inode in buffer */
274 } __attribute__((packed)) xfs_inode_log_format_32_t;
275
276 typedef struct xfs_inode_log_format_64 {
277 __uint16_t ilf_type; /* inode log item type */
278 __uint16_t ilf_size; /* size of this item */
279 __uint32_t ilf_fields; /* flags for fields logged */
280 __uint16_t ilf_asize; /* size of attr d/ext/root */
281 __uint16_t ilf_dsize; /* size of data/ext/root */
282 __uint32_t ilf_pad; /* pad for 64 bit boundary */
283 __uint64_t ilf_ino; /* inode number */
284 union {
285 __uint32_t ilfu_rdev; /* rdev value for dev inode*/
286 uuid_t ilfu_uuid; /* mount point value */
287 } ilf_u;
288 __int64_t ilf_blkno; /* blkno of inode buffer */
289 __int32_t ilf_len; /* len of inode buffer */
290 __int32_t ilf_boffset; /* off of inode in buffer */
291 } xfs_inode_log_format_64_t;
292
293 /*
294 * Flags for xfs_trans_log_inode flags field.
295 */
296 #define XFS_ILOG_CORE 0x001 /* log standard inode fields */
297 #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */
298 #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */
299 #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */
300 #define XFS_ILOG_DEV 0x010 /* log the dev field */
301 #define XFS_ILOG_UUID 0x020 /* log the uuid field */
302 #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */
303 #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */
304 #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */
305 #define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */
306 #define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */
307
308
309 /*
310 * The timestamps are dirty, but not necessarily anything else in the inode
311 * core. Unlike the other fields above this one must never make it to disk
312 * in the ilf_fields of the inode_log_format, but is purely store in-memory in
313 * ili_fields in the inode_log_item.
314 */
315 #define XFS_ILOG_TIMESTAMP 0x4000
316
317 #define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
318 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
319 XFS_ILOG_UUID | XFS_ILOG_ADATA | \
320 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \
321 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER)
322
323 #define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
324 XFS_ILOG_DBROOT)
325
326 #define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
327 XFS_ILOG_ABROOT)
328
329 #define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
330 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
331 XFS_ILOG_DEV | XFS_ILOG_UUID | \
332 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
333 XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP | \
334 XFS_ILOG_DOWNER | XFS_ILOG_AOWNER)
335
xfs_ilog_fbroot(int w)336 static inline int xfs_ilog_fbroot(int w)
337 {
338 return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
339 }
340
xfs_ilog_fext(int w)341 static inline int xfs_ilog_fext(int w)
342 {
343 return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
344 }
345
xfs_ilog_fdata(int w)346 static inline int xfs_ilog_fdata(int w)
347 {
348 return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
349 }
350
351 /*
352 * Incore version of the on-disk inode core structures. We log this directly
353 * into the journal in host CPU format (for better or worse) and as such
354 * directly mirrors the xfs_dinode structure as it must contain all the same
355 * information.
356 */
357 typedef struct xfs_ictimestamp {
358 __int32_t t_sec; /* timestamp seconds */
359 __int32_t t_nsec; /* timestamp nanoseconds */
360 } xfs_ictimestamp_t;
361
362 /*
363 * NOTE: This structure must be kept identical to struct xfs_dinode
364 * except for the endianness annotations.
365 */
366 typedef struct xfs_icdinode {
367 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
368 __uint16_t di_mode; /* mode and type of file */
369 __int8_t di_version; /* inode version */
370 __int8_t di_format; /* format of di_c data */
371 __uint16_t di_onlink; /* old number of links to file */
372 __uint32_t di_uid; /* owner's user id */
373 __uint32_t di_gid; /* owner's group id */
374 __uint32_t di_nlink; /* number of links to file */
375 __uint16_t di_projid_lo; /* lower part of owner's project id */
376 __uint16_t di_projid_hi; /* higher part of owner's project id */
377 __uint8_t di_pad[6]; /* unused, zeroed space */
378 __uint16_t di_flushiter; /* incremented on flush */
379 xfs_ictimestamp_t di_atime; /* time last accessed */
380 xfs_ictimestamp_t di_mtime; /* time last modified */
381 xfs_ictimestamp_t di_ctime; /* time created/inode modified */
382 xfs_fsize_t di_size; /* number of bytes in file */
383 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */
384 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
385 xfs_extnum_t di_nextents; /* number of extents in data fork */
386 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
387 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
388 __int8_t di_aformat; /* format of attr fork's data */
389 __uint32_t di_dmevmask; /* DMIG event mask */
390 __uint16_t di_dmstate; /* DMIG state info */
391 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
392 __uint32_t di_gen; /* generation number */
393
394 /* di_next_unlinked is the only non-core field in the old dinode */
395 xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */
396
397 /* start of the extended dinode, writable fields */
398 __uint32_t di_crc; /* CRC of the inode */
399 __uint64_t di_changecount; /* number of attribute changes */
400 xfs_lsn_t di_lsn; /* flush sequence */
401 __uint64_t di_flags2; /* more random flags */
402 __uint8_t di_pad2[16]; /* more padding for future expansion */
403
404 /* fields only written to during inode creation */
405 xfs_ictimestamp_t di_crtime; /* time created */
406 xfs_ino_t di_ino; /* inode number */
407 uuid_t di_uuid; /* UUID of the filesystem */
408
409 /* structure must be padded to 64 bit alignment */
410 } xfs_icdinode_t;
411
xfs_icdinode_size(int version)412 static inline uint xfs_icdinode_size(int version)
413 {
414 if (version == 3)
415 return sizeof(struct xfs_icdinode);
416 return offsetof(struct xfs_icdinode, di_next_unlinked);
417 }
418
419 /*
420 * Buffer Log Format defintions
421 *
422 * These are the physical dirty bitmap defintions for the log format structure.
423 */
424 #define XFS_BLF_CHUNK 128
425 #define XFS_BLF_SHIFT 7
426 #define BIT_TO_WORD_SHIFT 5
427 #define NBWORD (NBBY * sizeof(unsigned int))
428
429 /*
430 * This flag indicates that the buffer contains on disk inodes
431 * and requires special recovery handling.
432 */
433 #define XFS_BLF_INODE_BUF (1<<0)
434
435 /*
436 * This flag indicates that the buffer should not be replayed
437 * during recovery because its blocks are being freed.
438 */
439 #define XFS_BLF_CANCEL (1<<1)
440
441 /*
442 * This flag indicates that the buffer contains on disk
443 * user or group dquots and may require special recovery handling.
444 */
445 #define XFS_BLF_UDQUOT_BUF (1<<2)
446 #define XFS_BLF_PDQUOT_BUF (1<<3)
447 #define XFS_BLF_GDQUOT_BUF (1<<4)
448
449 /*
450 * This is the structure used to lay out a buf log item in the
451 * log. The data map describes which 128 byte chunks of the buffer
452 * have been logged.
453 */
454 #define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD)
455
456 typedef struct xfs_buf_log_format {
457 unsigned short blf_type; /* buf log item type indicator */
458 unsigned short blf_size; /* size of this item */
459 ushort blf_flags; /* misc state */
460 ushort blf_len; /* number of blocks in this buf */
461 __int64_t blf_blkno; /* starting blkno of this buf */
462 unsigned int blf_map_size; /* used size of data bitmap in words */
463 unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */
464 } xfs_buf_log_format_t;
465
466 /*
467 * All buffers now need to tell recovery where the magic number
468 * is so that it can verify and calculate the CRCs on the buffer correctly
469 * once the changes have been replayed into the buffer.
470 *
471 * The type value is held in the upper 5 bits of the blf_flags field, which is
472 * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down.
473 */
474 #define XFS_BLFT_BITS 5
475 #define XFS_BLFT_SHIFT 11
476 #define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT)
477
478 enum xfs_blft {
479 XFS_BLFT_UNKNOWN_BUF = 0,
480 XFS_BLFT_UDQUOT_BUF,
481 XFS_BLFT_PDQUOT_BUF,
482 XFS_BLFT_GDQUOT_BUF,
483 XFS_BLFT_BTREE_BUF,
484 XFS_BLFT_AGF_BUF,
485 XFS_BLFT_AGFL_BUF,
486 XFS_BLFT_AGI_BUF,
487 XFS_BLFT_DINO_BUF,
488 XFS_BLFT_SYMLINK_BUF,
489 XFS_BLFT_DIR_BLOCK_BUF,
490 XFS_BLFT_DIR_DATA_BUF,
491 XFS_BLFT_DIR_FREE_BUF,
492 XFS_BLFT_DIR_LEAF1_BUF,
493 XFS_BLFT_DIR_LEAFN_BUF,
494 XFS_BLFT_DA_NODE_BUF,
495 XFS_BLFT_ATTR_LEAF_BUF,
496 XFS_BLFT_ATTR_RMT_BUF,
497 XFS_BLFT_SB_BUF,
498 XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS),
499 };
500
501 static inline void
xfs_blft_to_flags(struct xfs_buf_log_format * blf,enum xfs_blft type)502 xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type)
503 {
504 ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF);
505 blf->blf_flags &= ~XFS_BLFT_MASK;
506 blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK);
507 }
508
509 static inline __uint16_t
xfs_blft_from_flags(struct xfs_buf_log_format * blf)510 xfs_blft_from_flags(struct xfs_buf_log_format *blf)
511 {
512 return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT;
513 }
514
515 /*
516 * EFI/EFD log format definitions
517 */
518 typedef struct xfs_extent {
519 xfs_fsblock_t ext_start;
520 xfs_extlen_t ext_len;
521 } xfs_extent_t;
522
523 /*
524 * Since an xfs_extent_t has types (start:64, len: 32)
525 * there are different alignments on 32 bit and 64 bit kernels.
526 * So we provide the different variants for use by a
527 * conversion routine.
528 */
529 typedef struct xfs_extent_32 {
530 __uint64_t ext_start;
531 __uint32_t ext_len;
532 } __attribute__((packed)) xfs_extent_32_t;
533
534 typedef struct xfs_extent_64 {
535 __uint64_t ext_start;
536 __uint32_t ext_len;
537 __uint32_t ext_pad;
538 } xfs_extent_64_t;
539
540 /*
541 * This is the structure used to lay out an efi log item in the
542 * log. The efi_extents field is a variable size array whose
543 * size is given by efi_nextents.
544 */
545 typedef struct xfs_efi_log_format {
546 __uint16_t efi_type; /* efi log item type */
547 __uint16_t efi_size; /* size of this item */
548 __uint32_t efi_nextents; /* # extents to free */
549 __uint64_t efi_id; /* efi identifier */
550 xfs_extent_t efi_extents[1]; /* array of extents to free */
551 } xfs_efi_log_format_t;
552
553 typedef struct xfs_efi_log_format_32 {
554 __uint16_t efi_type; /* efi log item type */
555 __uint16_t efi_size; /* size of this item */
556 __uint32_t efi_nextents; /* # extents to free */
557 __uint64_t efi_id; /* efi identifier */
558 xfs_extent_32_t efi_extents[1]; /* array of extents to free */
559 } __attribute__((packed)) xfs_efi_log_format_32_t;
560
561 typedef struct xfs_efi_log_format_64 {
562 __uint16_t efi_type; /* efi log item type */
563 __uint16_t efi_size; /* size of this item */
564 __uint32_t efi_nextents; /* # extents to free */
565 __uint64_t efi_id; /* efi identifier */
566 xfs_extent_64_t efi_extents[1]; /* array of extents to free */
567 } xfs_efi_log_format_64_t;
568
569 /*
570 * This is the structure used to lay out an efd log item in the
571 * log. The efd_extents array is a variable size array whose
572 * size is given by efd_nextents;
573 */
574 typedef struct xfs_efd_log_format {
575 __uint16_t efd_type; /* efd log item type */
576 __uint16_t efd_size; /* size of this item */
577 __uint32_t efd_nextents; /* # of extents freed */
578 __uint64_t efd_efi_id; /* id of corresponding efi */
579 xfs_extent_t efd_extents[1]; /* array of extents freed */
580 } xfs_efd_log_format_t;
581
582 typedef struct xfs_efd_log_format_32 {
583 __uint16_t efd_type; /* efd log item type */
584 __uint16_t efd_size; /* size of this item */
585 __uint32_t efd_nextents; /* # of extents freed */
586 __uint64_t efd_efi_id; /* id of corresponding efi */
587 xfs_extent_32_t efd_extents[1]; /* array of extents freed */
588 } __attribute__((packed)) xfs_efd_log_format_32_t;
589
590 typedef struct xfs_efd_log_format_64 {
591 __uint16_t efd_type; /* efd log item type */
592 __uint16_t efd_size; /* size of this item */
593 __uint32_t efd_nextents; /* # of extents freed */
594 __uint64_t efd_efi_id; /* id of corresponding efi */
595 xfs_extent_64_t efd_extents[1]; /* array of extents freed */
596 } xfs_efd_log_format_64_t;
597
598 /*
599 * Dquot Log format definitions.
600 *
601 * The first two fields must be the type and size fitting into
602 * 32 bits : log_recovery code assumes that.
603 */
604 typedef struct xfs_dq_logformat {
605 __uint16_t qlf_type; /* dquot log item type */
606 __uint16_t qlf_size; /* size of this item */
607 xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */
608 __int64_t qlf_blkno; /* blkno of dquot buffer */
609 __int32_t qlf_len; /* len of dquot buffer */
610 __uint32_t qlf_boffset; /* off of dquot in buffer */
611 } xfs_dq_logformat_t;
612
613 /*
614 * log format struct for QUOTAOFF records.
615 * The first two fields must be the type and size fitting into
616 * 32 bits : log_recovery code assumes that.
617 * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer
618 * to the first and ensures that the first logitem is taken out of the AIL
619 * only when the last one is securely committed.
620 */
621 typedef struct xfs_qoff_logformat {
622 unsigned short qf_type; /* quotaoff log item type */
623 unsigned short qf_size; /* size of this item */
624 unsigned int qf_flags; /* USR and/or GRP */
625 char qf_pad[12]; /* padding for future */
626 } xfs_qoff_logformat_t;
627
628 /*
629 * Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
630 */
631 #define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */
632 #define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */
633 #define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */
634 #define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */
635 #define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */
636 #define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */
637 #define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */
638
639 /*
640 * Conversion to and from the combined OQUOTA flag (if necessary)
641 * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk()
642 */
643 #define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */
644 #define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */
645 #define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */
646 #define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */
647
648 #define XFS_ALL_QUOTA_ACCT \
649 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT)
650 #define XFS_ALL_QUOTA_ENFD \
651 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD)
652 #define XFS_ALL_QUOTA_CHKD \
653 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD)
654
655 #define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
656 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
657 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\
658 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\
659 XFS_PQUOTA_CHKD)
660
661 /*
662 * Inode create log item structure
663 *
664 * Log recovery assumes the first two entries are the type and size and they fit
665 * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so
666 * decoding can be done correctly.
667 */
668 struct xfs_icreate_log {
669 __uint16_t icl_type; /* type of log format structure */
670 __uint16_t icl_size; /* size of log format structure */
671 __be32 icl_ag; /* ag being allocated in */
672 __be32 icl_agbno; /* start block of inode range */
673 __be32 icl_count; /* number of inodes to initialise */
674 __be32 icl_isize; /* size of inodes */
675 __be32 icl_length; /* length of extent to initialise */
676 __be32 icl_gen; /* inode generation number to use */
677 };
678
679 #endif /* __XFS_LOG_FORMAT_H__ */
680