1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18#ifndef __XFS_FORMAT_H__
19#define __XFS_FORMAT_H__
20
21
22
23
24
25
26
27
28
29
30struct xfs_mount;
31struct xfs_trans;
32struct xfs_inode;
33struct xfs_buf;
34struct xfs_ifork;
35
36
37
38
39
40
41#define XFS_SB_MAGIC 0x58465342
42#define XFS_SB_VERSION_1 1
43#define XFS_SB_VERSION_2 2
44#define XFS_SB_VERSION_3 3
45#define XFS_SB_VERSION_4 4
46#define XFS_SB_VERSION_5 5
47#define XFS_SB_VERSION_NUMBITS 0x000f
48#define XFS_SB_VERSION_ALLFBITS 0xfff0
49#define XFS_SB_VERSION_ATTRBIT 0x0010
50#define XFS_SB_VERSION_NLINKBIT 0x0020
51#define XFS_SB_VERSION_QUOTABIT 0x0040
52#define XFS_SB_VERSION_ALIGNBIT 0x0080
53#define XFS_SB_VERSION_DALIGNBIT 0x0100
54#define XFS_SB_VERSION_SHAREDBIT 0x0200
55#define XFS_SB_VERSION_LOGV2BIT 0x0400
56#define XFS_SB_VERSION_SECTORBIT 0x0800
57#define XFS_SB_VERSION_EXTFLGBIT 0x1000
58#define XFS_SB_VERSION_DIRV2BIT 0x2000
59#define XFS_SB_VERSION_BORGBIT 0x4000
60#define XFS_SB_VERSION_MOREBITSBIT 0x8000
61
62
63
64
65
66
67
68#define XFS_XATTR_SIZE_MAX (1 << 16)
69
70
71
72
73
74
75#define XFS_SB_VERSION_OKBITS \
76 ((XFS_SB_VERSION_NUMBITS | XFS_SB_VERSION_ALLFBITS) & \
77 ~XFS_SB_VERSION_SHAREDBIT)
78
79
80
81
82
83
84
85
86#define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
87#define XFS_SB_VERSION2_LAZYSBCOUNTBIT 0x00000002
88#define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
89#define XFS_SB_VERSION2_ATTR2BIT 0x00000008
90#define XFS_SB_VERSION2_PARENTBIT 0x00000010
91#define XFS_SB_VERSION2_PROJID32BIT 0x00000080
92#define XFS_SB_VERSION2_CRCBIT 0x00000100
93#define XFS_SB_VERSION2_FTYPE 0x00000200
94
95#define XFS_SB_VERSION2_OKBITS \
96 (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \
97 XFS_SB_VERSION2_ATTR2BIT | \
98 XFS_SB_VERSION2_PROJID32BIT | \
99 XFS_SB_VERSION2_FTYPE)
100
101
102#define XFSLABEL_MAX 12
103
104
105
106
107
108typedef struct xfs_sb {
109 uint32_t sb_magicnum;
110 uint32_t sb_blocksize;
111 xfs_rfsblock_t sb_dblocks;
112 xfs_rfsblock_t sb_rblocks;
113 xfs_rtblock_t sb_rextents;
114 uuid_t sb_uuid;
115 xfs_fsblock_t sb_logstart;
116 xfs_ino_t sb_rootino;
117 xfs_ino_t sb_rbmino;
118 xfs_ino_t sb_rsumino;
119 xfs_agblock_t sb_rextsize;
120 xfs_agblock_t sb_agblocks;
121 xfs_agnumber_t sb_agcount;
122 xfs_extlen_t sb_rbmblocks;
123 xfs_extlen_t sb_logblocks;
124 uint16_t sb_versionnum;
125 uint16_t sb_sectsize;
126 uint16_t sb_inodesize;
127 uint16_t sb_inopblock;
128 char sb_fname[XFSLABEL_MAX];
129 uint8_t sb_blocklog;
130 uint8_t sb_sectlog;
131 uint8_t sb_inodelog;
132 uint8_t sb_inopblog;
133 uint8_t sb_agblklog;
134 uint8_t sb_rextslog;
135 uint8_t sb_inprogress;
136 uint8_t sb_imax_pct;
137
138
139
140
141
142
143 uint64_t sb_icount;
144 uint64_t sb_ifree;
145 uint64_t sb_fdblocks;
146 uint64_t sb_frextents;
147
148
149
150 xfs_ino_t sb_uquotino;
151 xfs_ino_t sb_gquotino;
152 uint16_t sb_qflags;
153 uint8_t sb_flags;
154 uint8_t sb_shared_vn;
155 xfs_extlen_t sb_inoalignmt;
156 uint32_t sb_unit;
157 uint32_t sb_width;
158 uint8_t sb_dirblklog;
159 uint8_t sb_logsectlog;
160 uint16_t sb_logsectsize;
161 uint32_t sb_logsunit;
162 uint32_t sb_features2;
163
164
165
166
167
168
169
170
171
172
173 uint32_t sb_bad_features2;
174
175
176
177
178 uint32_t sb_features_compat;
179 uint32_t sb_features_ro_compat;
180 uint32_t sb_features_incompat;
181 uint32_t sb_features_log_incompat;
182
183 uint32_t sb_crc;
184 xfs_extlen_t sb_spino_align;
185
186 xfs_ino_t sb_pquotino;
187 xfs_lsn_t sb_lsn;
188 uuid_t sb_meta_uuid;
189
190
191} xfs_sb_t;
192
193#define XFS_SB_CRC_OFF offsetof(struct xfs_sb, sb_crc)
194
195
196
197
198
199typedef struct xfs_dsb {
200 __be32 sb_magicnum;
201 __be32 sb_blocksize;
202 __be64 sb_dblocks;
203 __be64 sb_rblocks;
204 __be64 sb_rextents;
205 uuid_t sb_uuid;
206 __be64 sb_logstart;
207 __be64 sb_rootino;
208 __be64 sb_rbmino;
209 __be64 sb_rsumino;
210 __be32 sb_rextsize;
211 __be32 sb_agblocks;
212 __be32 sb_agcount;
213 __be32 sb_rbmblocks;
214 __be32 sb_logblocks;
215 __be16 sb_versionnum;
216 __be16 sb_sectsize;
217 __be16 sb_inodesize;
218 __be16 sb_inopblock;
219 char sb_fname[XFSLABEL_MAX];
220 __u8 sb_blocklog;
221 __u8 sb_sectlog;
222 __u8 sb_inodelog;
223 __u8 sb_inopblog;
224 __u8 sb_agblklog;
225 __u8 sb_rextslog;
226 __u8 sb_inprogress;
227 __u8 sb_imax_pct;
228
229
230
231
232
233
234 __be64 sb_icount;
235 __be64 sb_ifree;
236 __be64 sb_fdblocks;
237 __be64 sb_frextents;
238
239
240
241 __be64 sb_uquotino;
242 __be64 sb_gquotino;
243 __be16 sb_qflags;
244 __u8 sb_flags;
245 __u8 sb_shared_vn;
246 __be32 sb_inoalignmt;
247 __be32 sb_unit;
248 __be32 sb_width;
249 __u8 sb_dirblklog;
250 __u8 sb_logsectlog;
251 __be16 sb_logsectsize;
252 __be32 sb_logsunit;
253 __be32 sb_features2;
254
255
256
257
258
259
260 __be32 sb_bad_features2;
261
262
263
264
265 __be32 sb_features_compat;
266 __be32 sb_features_ro_compat;
267 __be32 sb_features_incompat;
268 __be32 sb_features_log_incompat;
269
270 __le32 sb_crc;
271 __be32 sb_spino_align;
272
273 __be64 sb_pquotino;
274 __be64 sb_lsn;
275 uuid_t sb_meta_uuid;
276
277
278} xfs_dsb_t;
279
280
281
282
283
284
285#define XFS_SBF_NOFLAGS 0x00
286#define XFS_SBF_READONLY 0x01
287
288
289
290
291#define XFS_SB_MAX_SHARED_VN 0
292
293#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
294
295
296
297
298static inline bool xfs_sb_good_v4_features(struct xfs_sb *sbp)
299{
300 if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT))
301 return false;
302
303
304 if ((sbp->sb_versionnum & ~XFS_SB_VERSION_OKBITS) ||
305 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) &&
306 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKBITS)))
307 return false;
308
309 return true;
310}
311
312static inline bool xfs_sb_good_version(struct xfs_sb *sbp)
313{
314 if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5)
315 return true;
316 if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4)
317 return xfs_sb_good_v4_features(sbp);
318 return false;
319}
320
321
322
323
324
325static inline bool xfs_sb_has_mismatched_features2(struct xfs_sb *sbp)
326{
327 return sbp->sb_bad_features2 != sbp->sb_features2;
328}
329
330static inline bool xfs_sb_version_hasattr(struct xfs_sb *sbp)
331{
332 return (sbp->sb_versionnum & XFS_SB_VERSION_ATTRBIT);
333}
334
335static inline void xfs_sb_version_addattr(struct xfs_sb *sbp)
336{
337 sbp->sb_versionnum |= XFS_SB_VERSION_ATTRBIT;
338}
339
340static inline bool xfs_sb_version_hasquota(struct xfs_sb *sbp)
341{
342 return (sbp->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
343}
344
345static inline void xfs_sb_version_addquota(struct xfs_sb *sbp)
346{
347 sbp->sb_versionnum |= XFS_SB_VERSION_QUOTABIT;
348}
349
350static inline bool xfs_sb_version_hasalign(struct xfs_sb *sbp)
351{
352 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
353 (sbp->sb_versionnum & XFS_SB_VERSION_ALIGNBIT));
354}
355
356static inline bool xfs_sb_version_hasdalign(struct xfs_sb *sbp)
357{
358 return (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
359}
360
361static inline bool xfs_sb_version_haslogv2(struct xfs_sb *sbp)
362{
363 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
364 (sbp->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
365}
366
367static inline bool xfs_sb_version_hasextflgbit(struct xfs_sb *sbp)
368{
369 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
370 (sbp->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
371}
372
373static inline bool xfs_sb_version_hassector(struct xfs_sb *sbp)
374{
375 return (sbp->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
376}
377
378static inline bool xfs_sb_version_hasasciici(struct xfs_sb *sbp)
379{
380 return (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT);
381}
382
383static inline bool xfs_sb_version_hasmorebits(struct xfs_sb *sbp)
384{
385 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
386 (sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
387}
388
389
390
391
392static inline bool xfs_sb_version_haslazysbcount(struct xfs_sb *sbp)
393{
394 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
395 (xfs_sb_version_hasmorebits(sbp) &&
396 (sbp->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT));
397}
398
399static inline bool xfs_sb_version_hasattr2(struct xfs_sb *sbp)
400{
401 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
402 (xfs_sb_version_hasmorebits(sbp) &&
403 (sbp->sb_features2 & XFS_SB_VERSION2_ATTR2BIT));
404}
405
406static inline void xfs_sb_version_addattr2(struct xfs_sb *sbp)
407{
408 sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
409 sbp->sb_features2 |= XFS_SB_VERSION2_ATTR2BIT;
410}
411
412static inline void xfs_sb_version_removeattr2(struct xfs_sb *sbp)
413{
414 sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT;
415 if (!sbp->sb_features2)
416 sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT;
417}
418
419static inline bool xfs_sb_version_hasprojid32bit(struct xfs_sb *sbp)
420{
421 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
422 (xfs_sb_version_hasmorebits(sbp) &&
423 (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT));
424}
425
426static inline void xfs_sb_version_addprojid32bit(struct xfs_sb *sbp)
427{
428 sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
429 sbp->sb_features2 |= XFS_SB_VERSION2_PROJID32BIT;
430}
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450#define XFS_SB_FEAT_COMPAT_ALL 0
451#define XFS_SB_FEAT_COMPAT_UNKNOWN ~XFS_SB_FEAT_COMPAT_ALL
452static inline bool
453xfs_sb_has_compat_feature(
454 struct xfs_sb *sbp,
455 uint32_t feature)
456{
457 return (sbp->sb_features_compat & feature) != 0;
458}
459
460#define XFS_SB_FEAT_RO_COMPAT_FINOBT (1 << 0)
461#define XFS_SB_FEAT_RO_COMPAT_ALL \
462 (XFS_SB_FEAT_RO_COMPAT_FINOBT)
463#define XFS_SB_FEAT_RO_COMPAT_UNKNOWN ~XFS_SB_FEAT_RO_COMPAT_ALL
464static inline bool
465xfs_sb_has_ro_compat_feature(
466 struct xfs_sb *sbp,
467 uint32_t feature)
468{
469 return (sbp->sb_features_ro_compat & feature) != 0;
470}
471
472#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0)
473#define XFS_SB_FEAT_INCOMPAT_SPINODES (1 << 1)
474#define XFS_SB_FEAT_INCOMPAT_META_UUID (1 << 2)
475#define XFS_SB_FEAT_INCOMPAT_ALL \
476 (XFS_SB_FEAT_INCOMPAT_FTYPE| \
477 XFS_SB_FEAT_INCOMPAT_SPINODES| \
478 XFS_SB_FEAT_INCOMPAT_META_UUID)
479
480#define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL
481static inline bool
482xfs_sb_has_incompat_feature(
483 struct xfs_sb *sbp,
484 uint32_t feature)
485{
486 return (sbp->sb_features_incompat & feature) != 0;
487}
488
489#define XFS_SB_FEAT_INCOMPAT_LOG_ALL 0
490#define XFS_SB_FEAT_INCOMPAT_LOG_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_LOG_ALL
491static inline bool
492xfs_sb_has_incompat_log_feature(
493 struct xfs_sb *sbp,
494 uint32_t feature)
495{
496 return (sbp->sb_features_log_incompat & feature) != 0;
497}
498
499
500
501
502static inline bool xfs_sb_version_hascrc(struct xfs_sb *sbp)
503{
504 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
505}
506
507static inline bool xfs_sb_version_has_pquotino(struct xfs_sb *sbp)
508{
509 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
510}
511
512static inline int xfs_sb_version_hasftype(struct xfs_sb *sbp)
513{
514 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
515 xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_FTYPE)) ||
516 (xfs_sb_version_hasmorebits(sbp) &&
517 (sbp->sb_features2 & XFS_SB_VERSION2_FTYPE));
518}
519
520static inline int xfs_sb_version_hasfinobt(xfs_sb_t *sbp)
521{
522 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
523 (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_FINOBT);
524}
525
526static inline bool xfs_sb_version_hassparseinodes(struct xfs_sb *sbp)
527{
528 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
529 xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_SPINODES);
530}
531
532
533
534
535
536
537
538static inline bool xfs_sb_version_hasmetauuid(struct xfs_sb *sbp)
539{
540 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
541 (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_META_UUID);
542}
543
544
545
546
547
548static inline bool
549xfs_is_quota_inode(struct xfs_sb *sbp, xfs_ino_t ino)
550{
551 return (ino == sbp->sb_uquotino ||
552 ino == sbp->sb_gquotino ||
553 ino == sbp->sb_pquotino);
554}
555
556#define XFS_SB_DADDR ((xfs_daddr_t)0)
557#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
558#define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)((bp)->b_addr))
559
560#define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
561#define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \
562 xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d))
563#define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \
564 XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
565
566
567
568
569#define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
570
571
572
573
574#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
575#define XFS_BB_TO_FSB(mp,bb) \
576 (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
577#define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
578
579
580
581
582#define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
583#define XFS_B_TO_FSB(mp,b) \
584 ((((uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
585#define XFS_B_TO_FSBT(mp,b) (((uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
586#define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
587
588
589
590
591
592
593
594#define XFS_AGF_MAGIC 0x58414746
595#define XFS_AGI_MAGIC 0x58414749
596#define XFS_AGFL_MAGIC 0x5841464c
597#define XFS_AGF_VERSION 1
598#define XFS_AGI_VERSION 1
599
600#define XFS_AGF_GOOD_VERSION(v) ((v) == XFS_AGF_VERSION)
601#define XFS_AGI_GOOD_VERSION(v) ((v) == XFS_AGI_VERSION)
602
603
604
605
606
607#define XFS_BTNUM_AGF ((int)XFS_BTNUM_CNTi + 1)
608
609
610
611
612
613
614
615typedef struct xfs_agf {
616
617
618
619 __be32 agf_magicnum;
620 __be32 agf_versionnum;
621 __be32 agf_seqno;
622 __be32 agf_length;
623
624
625
626 __be32 agf_roots[XFS_BTNUM_AGF];
627 __be32 agf_spare0;
628 __be32 agf_levels[XFS_BTNUM_AGF];
629 __be32 agf_spare1;
630
631 __be32 agf_flfirst;
632 __be32 agf_fllast;
633 __be32 agf_flcount;
634 __be32 agf_freeblks;
635
636 __be32 agf_longest;
637 __be32 agf_btreeblks;
638 uuid_t agf_uuid;
639
640
641
642
643
644
645 __be64 agf_spare64[16];
646
647
648 __be64 agf_lsn;
649 __be32 agf_crc;
650 __be32 agf_spare2;
651
652
653} xfs_agf_t;
654
655#define XFS_AGF_CRC_OFF offsetof(struct xfs_agf, agf_crc)
656
657#define XFS_AGF_MAGICNUM 0x00000001
658#define XFS_AGF_VERSIONNUM 0x00000002
659#define XFS_AGF_SEQNO 0x00000004
660#define XFS_AGF_LENGTH 0x00000008
661#define XFS_AGF_ROOTS 0x00000010
662#define XFS_AGF_LEVELS 0x00000020
663#define XFS_AGF_FLFIRST 0x00000040
664#define XFS_AGF_FLLAST 0x00000080
665#define XFS_AGF_FLCOUNT 0x00000100
666#define XFS_AGF_FREEBLKS 0x00000200
667#define XFS_AGF_LONGEST 0x00000400
668#define XFS_AGF_BTREEBLKS 0x00000800
669#define XFS_AGF_UUID 0x00001000
670#define XFS_AGF_SPARE64 0x00002000
671#define XFS_AGF_NUM_BITS 14
672#define XFS_AGF_ALL_BITS ((1 << XFS_AGF_NUM_BITS) - 1)
673
674#define XFS_AGF_FLAGS \
675 { XFS_AGF_MAGICNUM, "MAGICNUM" }, \
676 { XFS_AGF_VERSIONNUM, "VERSIONNUM" }, \
677 { XFS_AGF_SEQNO, "SEQNO" }, \
678 { XFS_AGF_LENGTH, "LENGTH" }, \
679 { XFS_AGF_ROOTS, "ROOTS" }, \
680 { XFS_AGF_LEVELS, "LEVELS" }, \
681 { XFS_AGF_FLFIRST, "FLFIRST" }, \
682 { XFS_AGF_FLLAST, "FLLAST" }, \
683 { XFS_AGF_FLCOUNT, "FLCOUNT" }, \
684 { XFS_AGF_FREEBLKS, "FREEBLKS" }, \
685 { XFS_AGF_LONGEST, "LONGEST" }, \
686 { XFS_AGF_BTREEBLKS, "BTREEBLKS" }, \
687 { XFS_AGF_UUID, "UUID" }, \
688 { XFS_AGF_SPARE64, "SPARE64" }
689
690
691#define XFS_AGF_DADDR(mp) ((xfs_daddr_t)(1 << (mp)->m_sectbb_log))
692#define XFS_AGF_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp))
693#define XFS_BUF_TO_AGF(bp) ((xfs_agf_t *)((bp)->b_addr))
694
695
696
697
698#define XFS_AGI_UNLINKED_BUCKETS 64
699
700typedef struct xfs_agi {
701
702
703
704 __be32 agi_magicnum;
705 __be32 agi_versionnum;
706 __be32 agi_seqno;
707 __be32 agi_length;
708
709
710
711
712
713 __be32 agi_count;
714 __be32 agi_root;
715 __be32 agi_level;
716 __be32 agi_freecount;
717
718 __be32 agi_newino;
719 __be32 agi_dirino;
720
721
722
723
724 __be32 agi_unlinked[XFS_AGI_UNLINKED_BUCKETS];
725
726
727
728 uuid_t agi_uuid;
729 __be32 agi_crc;
730 __be32 agi_pad32;
731 __be64 agi_lsn;
732
733 __be32 agi_free_root;
734 __be32 agi_free_level;
735
736
737} xfs_agi_t;
738
739#define XFS_AGI_CRC_OFF offsetof(struct xfs_agi, agi_crc)
740
741#define XFS_AGI_MAGICNUM (1 << 0)
742#define XFS_AGI_VERSIONNUM (1 << 1)
743#define XFS_AGI_SEQNO (1 << 2)
744#define XFS_AGI_LENGTH (1 << 3)
745#define XFS_AGI_COUNT (1 << 4)
746#define XFS_AGI_ROOT (1 << 5)
747#define XFS_AGI_LEVEL (1 << 6)
748#define XFS_AGI_FREECOUNT (1 << 7)
749#define XFS_AGI_NEWINO (1 << 8)
750#define XFS_AGI_DIRINO (1 << 9)
751#define XFS_AGI_UNLINKED (1 << 10)
752#define XFS_AGI_NUM_BITS_R1 11
753#define XFS_AGI_ALL_BITS_R1 ((1 << XFS_AGI_NUM_BITS_R1) - 1)
754#define XFS_AGI_FREE_ROOT (1 << 11)
755#define XFS_AGI_FREE_LEVEL (1 << 12)
756#define XFS_AGI_NUM_BITS_R2 13
757
758
759#define XFS_AGI_DADDR(mp) ((xfs_daddr_t)(2 << (mp)->m_sectbb_log))
760#define XFS_AGI_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGI_DADDR(mp))
761#define XFS_BUF_TO_AGI(bp) ((xfs_agi_t *)((bp)->b_addr))
762
763
764
765
766
767#define XFS_AGFL_DADDR(mp) ((xfs_daddr_t)(3 << (mp)->m_sectbb_log))
768#define XFS_AGFL_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGFL_DADDR(mp))
769#define XFS_BUF_TO_AGFL(bp) ((xfs_agfl_t *)((bp)->b_addr))
770
771#define XFS_BUF_TO_AGFL_BNO(mp, bp) \
772 (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
773 &(XFS_BUF_TO_AGFL(bp)->agfl_bno[0]) : \
774 (__be32 *)(bp)->b_addr)
775
776
777
778
779
780
781#define XFS_AGFL_SIZE(mp) \
782 (((mp)->m_sb.sb_sectsize - \
783 (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
784 sizeof(struct xfs_agfl) : 0)) / \
785 sizeof(xfs_agblock_t))
786
787typedef struct xfs_agfl {
788 __be32 agfl_magicnum;
789 __be32 agfl_seqno;
790 uuid_t agfl_uuid;
791 __be64 agfl_lsn;
792 __be32 agfl_crc;
793 __be32 agfl_bno[];
794} xfs_agfl_t;
795
796#define XFS_AGFL_CRC_OFF offsetof(struct xfs_agfl, agfl_crc)
797
798#define XFS_AGB_TO_FSB(mp,agno,agbno) \
799 (((xfs_fsblock_t)(agno) << (mp)->m_sb.sb_agblklog) | (agbno))
800#define XFS_FSB_TO_AGNO(mp,fsbno) \
801 ((xfs_agnumber_t)((fsbno) >> (mp)->m_sb.sb_agblklog))
802#define XFS_FSB_TO_AGBNO(mp,fsbno) \
803 ((xfs_agblock_t)((fsbno) & xfs_mask32lo((mp)->m_sb.sb_agblklog)))
804#define XFS_AGB_TO_DADDR(mp,agno,agbno) \
805 ((xfs_daddr_t)XFS_FSB_TO_BB(mp, \
806 (xfs_fsblock_t)(agno) * (mp)->m_sb.sb_agblocks + (agbno)))
807#define XFS_AG_DADDR(mp,agno,d) (XFS_AGB_TO_DADDR(mp, agno, 0) + (d))
808
809
810
811
812
813#define XFS_AG_CHECK_DADDR(mp,d,len) \
814 ((len) == 1 ? \
815 ASSERT((d) == XFS_SB_DADDR || \
816 xfs_daddr_to_agbno(mp, d) != XFS_SB_DADDR) : \
817 ASSERT(xfs_daddr_to_agno(mp, d) == \
818 xfs_daddr_to_agno(mp, (d) + (len) - 1)))
819
820typedef struct xfs_timestamp {
821 __be32 t_sec;
822 __be32 t_nsec;
823} xfs_timestamp_t;
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842#define XFS_DINODE_MAGIC 0x494e
843typedef struct xfs_dinode {
844 __be16 di_magic;
845 __be16 di_mode;
846 __u8 di_version;
847 __u8 di_format;
848 __be16 di_onlink;
849 __be32 di_uid;
850 __be32 di_gid;
851 __be32 di_nlink;
852 __be16 di_projid_lo;
853 __be16 di_projid_hi;
854 __u8 di_pad[6];
855 __be16 di_flushiter;
856 xfs_timestamp_t di_atime;
857 xfs_timestamp_t di_mtime;
858 xfs_timestamp_t di_ctime;
859 __be64 di_size;
860 __be64 di_nblocks;
861 __be32 di_extsize;
862 __be32 di_nextents;
863 __be16 di_anextents;
864 __u8 di_forkoff;
865 __s8 di_aformat;
866 __be32 di_dmevmask;
867 __be16 di_dmstate;
868 __be16 di_flags;
869 __be32 di_gen;
870
871
872 __be32 di_next_unlinked;
873
874
875 __le32 di_crc;
876 __be64 di_changecount;
877 __be64 di_lsn;
878 __be64 di_flags2;
879 __u8 di_pad2[16];
880
881
882 xfs_timestamp_t di_crtime;
883 __be64 di_ino;
884 uuid_t di_uuid;
885
886
887} xfs_dinode_t;
888
889#define XFS_DINODE_CRC_OFF offsetof(struct xfs_dinode, di_crc)
890
891#define DI_MAX_FLUSH 0xffff
892
893
894
895
896
897static inline uint xfs_dinode_size(int version)
898{
899 if (version == 3)
900 return sizeof(struct xfs_dinode);
901 return offsetof(struct xfs_dinode, di_crc);
902}
903
904
905
906
907
908#define XFS_MAXLINK ((1U << 31) - 1U)
909
910
911
912
913typedef enum xfs_dinode_fmt {
914 XFS_DINODE_FMT_DEV,
915 XFS_DINODE_FMT_LOCAL,
916 XFS_DINODE_FMT_EXTENTS,
917 XFS_DINODE_FMT_BTREE,
918 XFS_DINODE_FMT_UUID
919} xfs_dinode_fmt_t;
920
921
922
923
924#define XFS_DINODE_MIN_LOG 8
925#define XFS_DINODE_MAX_LOG 11
926#define XFS_DINODE_MIN_SIZE (1 << XFS_DINODE_MIN_LOG)
927#define XFS_DINODE_MAX_SIZE (1 << XFS_DINODE_MAX_LOG)
928
929
930
931
932#define XFS_LITINO(mp, version) \
933 ((int)(((mp)->m_sb.sb_inodesize) - xfs_dinode_size(version)))
934
935
936
937
938#define XFS_DFORK_Q(dip) ((dip)->di_forkoff != 0)
939#define XFS_DFORK_BOFF(dip) ((int)((dip)->di_forkoff << 3))
940
941#define XFS_DFORK_DSIZE(dip,mp) \
942 (XFS_DFORK_Q(dip) ? \
943 XFS_DFORK_BOFF(dip) : \
944 XFS_LITINO(mp, (dip)->di_version))
945#define XFS_DFORK_ASIZE(dip,mp) \
946 (XFS_DFORK_Q(dip) ? \
947 XFS_LITINO(mp, (dip)->di_version) - XFS_DFORK_BOFF(dip) : \
948 0)
949#define XFS_DFORK_SIZE(dip,mp,w) \
950 ((w) == XFS_DATA_FORK ? \
951 XFS_DFORK_DSIZE(dip, mp) : \
952 XFS_DFORK_ASIZE(dip, mp))
953
954#define XFS_DFORK_MAXEXT(dip, mp, w) \
955 (XFS_DFORK_SIZE(dip, mp, w) / sizeof(struct xfs_bmbt_rec))
956
957
958
959
960#define XFS_DFORK_DPTR(dip) \
961 ((char *)dip + xfs_dinode_size(dip->di_version))
962#define XFS_DFORK_APTR(dip) \
963 (XFS_DFORK_DPTR(dip) + XFS_DFORK_BOFF(dip))
964#define XFS_DFORK_PTR(dip,w) \
965 ((w) == XFS_DATA_FORK ? XFS_DFORK_DPTR(dip) : XFS_DFORK_APTR(dip))
966
967#define XFS_DFORK_FORMAT(dip,w) \
968 ((w) == XFS_DATA_FORK ? \
969 (dip)->di_format : \
970 (dip)->di_aformat)
971#define XFS_DFORK_NEXTENTS(dip,w) \
972 ((w) == XFS_DATA_FORK ? \
973 be32_to_cpu((dip)->di_nextents) : \
974 be16_to_cpu((dip)->di_anextents))
975
976
977
978
979
980static inline xfs_dev_t xfs_dinode_get_rdev(struct xfs_dinode *dip)
981{
982 return be32_to_cpu(*(__be32 *)XFS_DFORK_DPTR(dip));
983}
984
985static inline void xfs_dinode_put_rdev(struct xfs_dinode *dip, xfs_dev_t rdev)
986{
987 *(__be32 *)XFS_DFORK_DPTR(dip) = cpu_to_be32(rdev);
988}
989
990
991
992
993
994
995#define XFS_DIFLAG_REALTIME_BIT 0
996#define XFS_DIFLAG_PREALLOC_BIT 1
997#define XFS_DIFLAG_NEWRTBM_BIT 2
998#define XFS_DIFLAG_IMMUTABLE_BIT 3
999#define XFS_DIFLAG_APPEND_BIT 4
1000#define XFS_DIFLAG_SYNC_BIT 5
1001#define XFS_DIFLAG_NOATIME_BIT 6
1002#define XFS_DIFLAG_NODUMP_BIT 7
1003#define XFS_DIFLAG_RTINHERIT_BIT 8
1004#define XFS_DIFLAG_PROJINHERIT_BIT 9
1005#define XFS_DIFLAG_NOSYMLINKS_BIT 10
1006#define XFS_DIFLAG_EXTSIZE_BIT 11
1007#define XFS_DIFLAG_EXTSZINHERIT_BIT 12
1008#define XFS_DIFLAG_NODEFRAG_BIT 13
1009#define XFS_DIFLAG_FILESTREAM_BIT 14
1010#define XFS_DIFLAG_REALTIME (1 << XFS_DIFLAG_REALTIME_BIT)
1011#define XFS_DIFLAG_PREALLOC (1 << XFS_DIFLAG_PREALLOC_BIT)
1012#define XFS_DIFLAG_NEWRTBM (1 << XFS_DIFLAG_NEWRTBM_BIT)
1013#define XFS_DIFLAG_IMMUTABLE (1 << XFS_DIFLAG_IMMUTABLE_BIT)
1014#define XFS_DIFLAG_APPEND (1 << XFS_DIFLAG_APPEND_BIT)
1015#define XFS_DIFLAG_SYNC (1 << XFS_DIFLAG_SYNC_BIT)
1016#define XFS_DIFLAG_NOATIME (1 << XFS_DIFLAG_NOATIME_BIT)
1017#define XFS_DIFLAG_NODUMP (1 << XFS_DIFLAG_NODUMP_BIT)
1018#define XFS_DIFLAG_RTINHERIT (1 << XFS_DIFLAG_RTINHERIT_BIT)
1019#define XFS_DIFLAG_PROJINHERIT (1 << XFS_DIFLAG_PROJINHERIT_BIT)
1020#define XFS_DIFLAG_NOSYMLINKS (1 << XFS_DIFLAG_NOSYMLINKS_BIT)
1021#define XFS_DIFLAG_EXTSIZE (1 << XFS_DIFLAG_EXTSIZE_BIT)
1022#define XFS_DIFLAG_EXTSZINHERIT (1 << XFS_DIFLAG_EXTSZINHERIT_BIT)
1023#define XFS_DIFLAG_NODEFRAG (1 << XFS_DIFLAG_NODEFRAG_BIT)
1024#define XFS_DIFLAG_FILESTREAM (1 << XFS_DIFLAG_FILESTREAM_BIT)
1025
1026#define XFS_DIFLAG_ANY \
1027 (XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \
1028 XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \
1029 XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \
1030 XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS | XFS_DIFLAG_EXTSIZE | \
1031 XFS_DIFLAG_EXTSZINHERIT | XFS_DIFLAG_NODEFRAG | XFS_DIFLAG_FILESTREAM)
1032
1033
1034
1035
1036
1037
1038
1039
1040#define XFS_INO_MASK(k) (uint32_t)((1ULL << (k)) - 1)
1041#define XFS_INO_OFFSET_BITS(mp) (mp)->m_sb.sb_inopblog
1042#define XFS_INO_AGBNO_BITS(mp) (mp)->m_sb.sb_agblklog
1043#define XFS_INO_AGINO_BITS(mp) (mp)->m_agino_log
1044#define XFS_INO_AGNO_BITS(mp) (mp)->m_agno_log
1045#define XFS_INO_BITS(mp) \
1046 XFS_INO_AGNO_BITS(mp) + XFS_INO_AGINO_BITS(mp)
1047#define XFS_INO_TO_AGNO(mp,i) \
1048 ((xfs_agnumber_t)((i) >> XFS_INO_AGINO_BITS(mp)))
1049#define XFS_INO_TO_AGINO(mp,i) \
1050 ((xfs_agino_t)(i) & XFS_INO_MASK(XFS_INO_AGINO_BITS(mp)))
1051#define XFS_INO_TO_AGBNO(mp,i) \
1052 (((xfs_agblock_t)(i) >> XFS_INO_OFFSET_BITS(mp)) & \
1053 XFS_INO_MASK(XFS_INO_AGBNO_BITS(mp)))
1054#define XFS_INO_TO_OFFSET(mp,i) \
1055 ((int)(i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
1056#define XFS_INO_TO_FSB(mp,i) \
1057 XFS_AGB_TO_FSB(mp, XFS_INO_TO_AGNO(mp,i), XFS_INO_TO_AGBNO(mp,i))
1058#define XFS_AGINO_TO_INO(mp,a,i) \
1059 (((xfs_ino_t)(a) << XFS_INO_AGINO_BITS(mp)) | (i))
1060#define XFS_AGINO_TO_AGBNO(mp,i) ((i) >> XFS_INO_OFFSET_BITS(mp))
1061#define XFS_AGINO_TO_OFFSET(mp,i) \
1062 ((i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
1063#define XFS_OFFBNO_TO_AGINO(mp,b,o) \
1064 ((xfs_agino_t)(((b) << XFS_INO_OFFSET_BITS(mp)) | (o)))
1065
1066#define XFS_MAXINUMBER ((xfs_ino_t)((1ULL << 56) - 1ULL))
1067#define XFS_MAXINUMBER_32 ((xfs_ino_t)((1ULL << 32) - 1ULL))
1068
1069
1070
1071
1072
1073
1074#define XFS_MAX_RTEXTSIZE (1024 * 1024 * 1024)
1075#define XFS_DFL_RTEXTSIZE (64 * 1024)
1076#define XFS_MIN_RTEXTSIZE (4 * 1024)
1077
1078#define XFS_BLOCKSIZE(mp) ((mp)->m_sb.sb_blocksize)
1079#define XFS_BLOCKMASK(mp) ((mp)->m_blockmask)
1080#define XFS_BLOCKWSIZE(mp) ((mp)->m_blockwsize)
1081#define XFS_BLOCKWMASK(mp) ((mp)->m_blockwmask)
1082
1083
1084
1085
1086#define XFS_SUMOFFS(mp,ls,bb) ((int)((ls) * (mp)->m_sb.sb_rbmblocks + (bb)))
1087#define XFS_SUMOFFSTOBLOCK(mp,s) \
1088 (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog)
1089#define XFS_SUMPTR(mp,bp,so) \
1090 ((xfs_suminfo_t *)((bp)->b_addr + \
1091 (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp))))
1092
1093#define XFS_BITTOBLOCK(mp,bi) ((bi) >> (mp)->m_blkbit_log)
1094#define XFS_BLOCKTOBIT(mp,bb) ((bb) << (mp)->m_blkbit_log)
1095#define XFS_BITTOWORD(mp,bi) \
1096 ((int)(((bi) >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp)))
1097
1098#define XFS_RTMIN(a,b) ((a) < (b) ? (a) : (b))
1099#define XFS_RTMAX(a,b) ((a) > (b) ? (a) : (b))
1100
1101#define XFS_RTLOBIT(w) xfs_lowbit32(w)
1102#define XFS_RTHIBIT(w) xfs_highbit32(w)
1103
1104#define XFS_RTBLOCKLOG(b) xfs_highbit64(b)
1105
1106
1107
1108
1109#define XFS_DQUOT_MAGIC 0x4451
1110#define XFS_DQUOT_VERSION (uint8_t)0x01
1111
1112
1113
1114
1115
1116
1117
1118typedef struct xfs_disk_dquot {
1119 __be16 d_magic;
1120 __u8 d_version;
1121 __u8 d_flags;
1122 __be32 d_id;
1123 __be64 d_blk_hardlimit;
1124 __be64 d_blk_softlimit;
1125 __be64 d_ino_hardlimit;
1126 __be64 d_ino_softlimit;
1127 __be64 d_bcount;
1128 __be64 d_icount;
1129 __be32 d_itimer;
1130
1131 __be32 d_btimer;
1132 __be16 d_iwarns;
1133 __be16 d_bwarns;
1134 __be32 d_pad0;
1135 __be64 d_rtb_hardlimit;
1136 __be64 d_rtb_softlimit;
1137 __be64 d_rtbcount;
1138 __be32 d_rtbtimer;
1139 __be16 d_rtbwarns;
1140 __be16 d_pad;
1141} xfs_disk_dquot_t;
1142
1143
1144
1145
1146
1147typedef struct xfs_dqblk {
1148 xfs_disk_dquot_t dd_diskdq;
1149 char dd_fill[4];
1150
1151
1152
1153
1154 __be32 dd_crc;
1155 __be64 dd_lsn;
1156 uuid_t dd_uuid;
1157} xfs_dqblk_t;
1158
1159#define XFS_DQUOT_CRC_OFF offsetof(struct xfs_dqblk, dd_crc)
1160
1161
1162
1163
1164#define XFS_SYMLINK_MAGIC 0x58534c4d
1165
1166struct xfs_dsymlink_hdr {
1167 __be32 sl_magic;
1168 __be32 sl_offset;
1169 __be32 sl_bytes;
1170 __be32 sl_crc;
1171 uuid_t sl_uuid;
1172 __be64 sl_owner;
1173 __be64 sl_blkno;
1174 __be64 sl_lsn;
1175};
1176
1177#define XFS_SYMLINK_CRC_OFF offsetof(struct xfs_dsymlink_hdr, sl_crc)
1178
1179#define XFS_SYMLINK_MAXLEN 1024
1180
1181
1182
1183
1184
1185#define XFS_SYMLINK_MAPS 3
1186
1187#define XFS_SYMLINK_BUF_SPACE(mp, bufsize) \
1188 ((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \
1189 sizeof(struct xfs_dsymlink_hdr) : 0))
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199#define XFS_ABTB_MAGIC 0x41425442
1200#define XFS_ABTB_CRC_MAGIC 0x41423342
1201#define XFS_ABTC_MAGIC 0x41425443
1202#define XFS_ABTC_CRC_MAGIC 0x41423343
1203
1204
1205
1206
1207typedef struct xfs_alloc_rec {
1208 __be32 ar_startblock;
1209 __be32 ar_blockcount;
1210} xfs_alloc_rec_t, xfs_alloc_key_t;
1211
1212typedef struct xfs_alloc_rec_incore {
1213 xfs_agblock_t ar_startblock;
1214 xfs_extlen_t ar_blockcount;
1215} xfs_alloc_rec_incore_t;
1216
1217
1218typedef __be32 xfs_alloc_ptr_t;
1219
1220
1221
1222
1223
1224#define XFS_BNO_BLOCK(mp) ((xfs_agblock_t)(XFS_AGFL_BLOCK(mp) + 1))
1225#define XFS_CNT_BLOCK(mp) ((xfs_agblock_t)(XFS_BNO_BLOCK(mp) + 1))
1226
1227
1228
1229
1230
1231
1232
1233#define XFS_IBT_MAGIC 0x49414254
1234#define XFS_IBT_CRC_MAGIC 0x49414233
1235#define XFS_FIBT_MAGIC 0x46494254
1236#define XFS_FIBT_CRC_MAGIC 0x46494233
1237
1238typedef uint64_t xfs_inofree_t;
1239#define XFS_INODES_PER_CHUNK (NBBY * sizeof(xfs_inofree_t))
1240#define XFS_INODES_PER_CHUNK_LOG (XFS_NBBYLOG + 3)
1241#define XFS_INOBT_ALL_FREE ((xfs_inofree_t)-1)
1242#define XFS_INOBT_MASK(i) ((xfs_inofree_t)1 << (i))
1243
1244#define XFS_INOBT_HOLEMASK_FULL 0
1245#define XFS_INOBT_HOLEMASK_BITS (NBBY * sizeof(uint16_t))
1246#define XFS_INODES_PER_HOLEMASK_BIT \
1247 (XFS_INODES_PER_CHUNK / (NBBY * sizeof(uint16_t)))
1248
1249static inline xfs_inofree_t xfs_inobt_maskn(int i, int n)
1250{
1251 return ((n >= XFS_INODES_PER_CHUNK ? 0 : XFS_INOBT_MASK(n)) - 1) << i;
1252}
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264typedef struct xfs_inobt_rec {
1265 __be32 ir_startino;
1266 union {
1267 struct {
1268 __be32 ir_freecount;
1269 } f;
1270 struct {
1271 __be16 ir_holemask;
1272 __u8 ir_count;
1273 __u8 ir_freecount;
1274 } sp;
1275 } ir_u;
1276 __be64 ir_free;
1277} xfs_inobt_rec_t;
1278
1279typedef struct xfs_inobt_rec_incore {
1280 xfs_agino_t ir_startino;
1281 uint16_t ir_holemask;
1282 uint8_t ir_count;
1283 uint8_t ir_freecount;
1284 xfs_inofree_t ir_free;
1285} xfs_inobt_rec_incore_t;
1286
1287static inline bool xfs_inobt_issparse(uint16_t holemask)
1288{
1289
1290 return holemask;
1291}
1292
1293
1294
1295
1296typedef struct xfs_inobt_key {
1297 __be32 ir_startino;
1298} xfs_inobt_key_t;
1299
1300
1301typedef __be32 xfs_inobt_ptr_t;
1302
1303
1304
1305
1306#define XFS_IBT_BLOCK(mp) ((xfs_agblock_t)(XFS_CNT_BLOCK(mp) + 1))
1307#define XFS_FIBT_BLOCK(mp) ((xfs_agblock_t)(XFS_IBT_BLOCK(mp) + 1))
1308
1309
1310
1311
1312
1313
1314#define XFS_PREALLOC_BLOCKS(mp) \
1315 (xfs_sb_version_hasfinobt(&((mp)->m_sb)) ? \
1316 XFS_FIBT_BLOCK(mp) + 1 : \
1317 XFS_IBT_BLOCK(mp) + 1)
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327#define XFS_BMAP_MAGIC 0x424d4150
1328#define XFS_BMAP_CRC_MAGIC 0x424d4133
1329
1330
1331
1332
1333typedef struct xfs_bmdr_block {
1334 __be16 bb_level;
1335 __be16 bb_numrecs;
1336} xfs_bmdr_block_t;
1337
1338
1339
1340
1341
1342
1343
1344
1345#define BMBT_EXNTFLAG_BITLEN 1
1346#define BMBT_STARTOFF_BITLEN 54
1347#define BMBT_STARTBLOCK_BITLEN 52
1348#define BMBT_BLOCKCOUNT_BITLEN 21
1349
1350#define BMBT_STARTOFF_MASK ((1ULL << BMBT_STARTOFF_BITLEN) - 1)
1351
1352typedef struct xfs_bmbt_rec {
1353 __be64 l0, l1;
1354} xfs_bmbt_rec_t;
1355
1356typedef uint64_t xfs_bmbt_rec_base_t;
1357typedef xfs_bmbt_rec_t xfs_bmdr_rec_t;
1358
1359
1360
1361
1362#define STARTBLOCKVALBITS 17
1363#define STARTBLOCKMASKBITS (15 + 20)
1364#define STARTBLOCKMASK \
1365 (((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
1366
1367static inline int isnullstartblock(xfs_fsblock_t x)
1368{
1369 return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK;
1370}
1371
1372static inline xfs_fsblock_t nullstartblock(int k)
1373{
1374 ASSERT(k < (1 << STARTBLOCKVALBITS));
1375 return STARTBLOCKMASK | (k);
1376}
1377
1378static inline xfs_filblks_t startblockval(xfs_fsblock_t x)
1379{
1380 return (xfs_filblks_t)((x) & ~STARTBLOCKMASK);
1381}
1382
1383
1384
1385
1386typedef struct xfs_bmbt_key {
1387 __be64 br_startoff;
1388} xfs_bmbt_key_t, xfs_bmdr_key_t;
1389
1390
1391typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t;
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409struct xfs_btree_block_shdr {
1410 __be32 bb_leftsib;
1411 __be32 bb_rightsib;
1412
1413 __be64 bb_blkno;
1414 __be64 bb_lsn;
1415 uuid_t bb_uuid;
1416 __be32 bb_owner;
1417 __le32 bb_crc;
1418};
1419
1420
1421struct xfs_btree_block_lhdr {
1422 __be64 bb_leftsib;
1423 __be64 bb_rightsib;
1424
1425 __be64 bb_blkno;
1426 __be64 bb_lsn;
1427 uuid_t bb_uuid;
1428 __be64 bb_owner;
1429 __le32 bb_crc;
1430 __be32 bb_pad;
1431};
1432
1433struct xfs_btree_block {
1434 __be32 bb_magic;
1435 __be16 bb_level;
1436 __be16 bb_numrecs;
1437 union {
1438 struct xfs_btree_block_shdr s;
1439 struct xfs_btree_block_lhdr l;
1440 } bb_u;
1441};
1442
1443
1444#define XFS_BTREE_SBLOCK_LEN \
1445 (offsetof(struct xfs_btree_block, bb_u) + \
1446 offsetof(struct xfs_btree_block_shdr, bb_blkno))
1447
1448#define XFS_BTREE_LBLOCK_LEN \
1449 (offsetof(struct xfs_btree_block, bb_u) + \
1450 offsetof(struct xfs_btree_block_lhdr, bb_blkno))
1451
1452
1453#define XFS_BTREE_SBLOCK_CRC_LEN \
1454 (offsetof(struct xfs_btree_block, bb_u) + \
1455 sizeof(struct xfs_btree_block_shdr))
1456#define XFS_BTREE_LBLOCK_CRC_LEN \
1457 (offsetof(struct xfs_btree_block, bb_u) + \
1458 sizeof(struct xfs_btree_block_lhdr))
1459
1460#define XFS_BTREE_SBLOCK_CRC_OFF \
1461 offsetof(struct xfs_btree_block, bb_u.s.bb_crc)
1462#define XFS_BTREE_LBLOCK_CRC_OFF \
1463 offsetof(struct xfs_btree_block, bb_u.l.bb_crc)
1464
1465
1466
1467
1468struct xfs_acl_entry {
1469 __be32 ae_tag;
1470 __be32 ae_id;
1471 __be16 ae_perm;
1472 __be16 ae_pad;
1473};
1474
1475struct xfs_acl {
1476 __be32 acl_cnt;
1477 struct xfs_acl_entry acl_entry[0];
1478};
1479
1480
1481
1482
1483
1484
1485#define XFS_ACL_MAX_ENTRIES(mp) \
1486 (xfs_sb_version_hascrc(&mp->m_sb) \
1487 ? (XFS_XATTR_SIZE_MAX - sizeof(struct xfs_acl)) / \
1488 sizeof(struct xfs_acl_entry) \
1489 : 25)
1490
1491#define XFS_ACL_SIZE(cnt) \
1492 (sizeof(struct xfs_acl) + \
1493 sizeof(struct xfs_acl_entry) * cnt)
1494
1495#define XFS_ACL_MAX_SIZE(mp) \
1496 XFS_ACL_SIZE(XFS_ACL_MAX_ENTRIES((mp)))
1497
1498
1499
1500#define SGI_ACL_FILE "SGI_ACL_FILE"
1501#define SGI_ACL_DEFAULT "SGI_ACL_DEFAULT"
1502#define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
1503#define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
1504
1505#endif
1506