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18#ifndef __XFS_FORMAT_H__
19#define __XFS_FORMAT_H__
20
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28
29
30struct xfs_mount;
31struct xfs_trans;
32struct xfs_inode;
33struct xfs_buf;
34struct xfs_ifork;
35
36
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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#define XFS_SB_VERSION_OKBITS \
68 ((XFS_SB_VERSION_NUMBITS | XFS_SB_VERSION_ALLFBITS) & \
69 ~XFS_SB_VERSION_SHAREDBIT)
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71
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76
77
78#define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
79#define XFS_SB_VERSION2_LAZYSBCOUNTBIT 0x00000002
80#define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
81#define XFS_SB_VERSION2_ATTR2BIT 0x00000008
82#define XFS_SB_VERSION2_PARENTBIT 0x00000010
83#define XFS_SB_VERSION2_PROJID32BIT 0x00000080
84#define XFS_SB_VERSION2_CRCBIT 0x00000100
85#define XFS_SB_VERSION2_FTYPE 0x00000200
86
87#define XFS_SB_VERSION2_OKBITS \
88 (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \
89 XFS_SB_VERSION2_ATTR2BIT | \
90 XFS_SB_VERSION2_PROJID32BIT | \
91 XFS_SB_VERSION2_FTYPE)
92
93
94
95
96
97typedef struct xfs_sb {
98 __uint32_t sb_magicnum;
99 __uint32_t sb_blocksize;
100 xfs_rfsblock_t sb_dblocks;
101 xfs_rfsblock_t sb_rblocks;
102 xfs_rtblock_t sb_rextents;
103 uuid_t sb_uuid;
104 xfs_fsblock_t sb_logstart;
105 xfs_ino_t sb_rootino;
106 xfs_ino_t sb_rbmino;
107 xfs_ino_t sb_rsumino;
108 xfs_agblock_t sb_rextsize;
109 xfs_agblock_t sb_agblocks;
110 xfs_agnumber_t sb_agcount;
111 xfs_extlen_t sb_rbmblocks;
112 xfs_extlen_t sb_logblocks;
113 __uint16_t sb_versionnum;
114 __uint16_t sb_sectsize;
115 __uint16_t sb_inodesize;
116 __uint16_t sb_inopblock;
117 char sb_fname[12];
118 __uint8_t sb_blocklog;
119 __uint8_t sb_sectlog;
120 __uint8_t sb_inodelog;
121 __uint8_t sb_inopblog;
122 __uint8_t sb_agblklog;
123 __uint8_t sb_rextslog;
124 __uint8_t sb_inprogress;
125 __uint8_t sb_imax_pct;
126
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130
131
132 __uint64_t sb_icount;
133 __uint64_t sb_ifree;
134 __uint64_t sb_fdblocks;
135 __uint64_t sb_frextents;
136
137
138
139 xfs_ino_t sb_uquotino;
140 xfs_ino_t sb_gquotino;
141 __uint16_t sb_qflags;
142 __uint8_t sb_flags;
143 __uint8_t sb_shared_vn;
144 xfs_extlen_t sb_inoalignmt;
145 __uint32_t sb_unit;
146 __uint32_t sb_width;
147 __uint8_t sb_dirblklog;
148 __uint8_t sb_logsectlog;
149 __uint16_t sb_logsectsize;
150 __uint32_t sb_logsunit;
151 __uint32_t sb_features2;
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160
161
162 __uint32_t sb_bad_features2;
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166
167 __uint32_t sb_features_compat;
168 __uint32_t sb_features_ro_compat;
169 __uint32_t sb_features_incompat;
170 __uint32_t sb_features_log_incompat;
171
172 __uint32_t sb_crc;
173 __uint32_t sb_pad;
174
175 xfs_ino_t sb_pquotino;
176 xfs_lsn_t sb_lsn;
177
178
179} xfs_sb_t;
180
181#define XFS_SB_CRC_OFF offsetof(struct xfs_sb, sb_crc)
182
183
184
185
186
187typedef struct xfs_dsb {
188 __be32 sb_magicnum;
189 __be32 sb_blocksize;
190 __be64 sb_dblocks;
191 __be64 sb_rblocks;
192 __be64 sb_rextents;
193 uuid_t sb_uuid;
194 __be64 sb_logstart;
195 __be64 sb_rootino;
196 __be64 sb_rbmino;
197 __be64 sb_rsumino;
198 __be32 sb_rextsize;
199 __be32 sb_agblocks;
200 __be32 sb_agcount;
201 __be32 sb_rbmblocks;
202 __be32 sb_logblocks;
203 __be16 sb_versionnum;
204 __be16 sb_sectsize;
205 __be16 sb_inodesize;
206 __be16 sb_inopblock;
207 char sb_fname[12];
208 __u8 sb_blocklog;
209 __u8 sb_sectlog;
210 __u8 sb_inodelog;
211 __u8 sb_inopblog;
212 __u8 sb_agblklog;
213 __u8 sb_rextslog;
214 __u8 sb_inprogress;
215 __u8 sb_imax_pct;
216
217
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219
220
221
222 __be64 sb_icount;
223 __be64 sb_ifree;
224 __be64 sb_fdblocks;
225 __be64 sb_frextents;
226
227
228
229 __be64 sb_uquotino;
230 __be64 sb_gquotino;
231 __be16 sb_qflags;
232 __u8 sb_flags;
233 __u8 sb_shared_vn;
234 __be32 sb_inoalignmt;
235 __be32 sb_unit;
236 __be32 sb_width;
237 __u8 sb_dirblklog;
238 __u8 sb_logsectlog;
239 __be16 sb_logsectsize;
240 __be32 sb_logsunit;
241 __be32 sb_features2;
242
243
244
245
246
247
248 __be32 sb_bad_features2;
249
250
251
252
253 __be32 sb_features_compat;
254 __be32 sb_features_ro_compat;
255 __be32 sb_features_incompat;
256 __be32 sb_features_log_incompat;
257
258 __le32 sb_crc;
259 __be32 sb_pad;
260
261 __be64 sb_pquotino;
262 __be64 sb_lsn;
263
264
265} xfs_dsb_t;
266
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270
271
272#define XFS_SBF_NOFLAGS 0x00
273#define XFS_SBF_READONLY 0x01
274
275
276
277
278#define XFS_SB_MAX_SHARED_VN 0
279
280#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
281
282
283
284
285static inline bool xfs_sb_good_v4_features(struct xfs_sb *sbp)
286{
287 if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT))
288 return false;
289
290
291 if ((sbp->sb_versionnum & ~XFS_SB_VERSION_OKBITS) ||
292 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) &&
293 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKBITS)))
294 return false;
295
296 return true;
297}
298
299static inline bool xfs_sb_good_version(struct xfs_sb *sbp)
300{
301 if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5)
302 return true;
303 if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4)
304 return xfs_sb_good_v4_features(sbp);
305 return false;
306}
307
308
309
310
311
312static inline bool xfs_sb_has_mismatched_features2(struct xfs_sb *sbp)
313{
314 return sbp->sb_bad_features2 != sbp->sb_features2;
315}
316
317static inline bool xfs_sb_version_hasattr(struct xfs_sb *sbp)
318{
319 return (sbp->sb_versionnum & XFS_SB_VERSION_ATTRBIT);
320}
321
322static inline void xfs_sb_version_addattr(struct xfs_sb *sbp)
323{
324 sbp->sb_versionnum |= XFS_SB_VERSION_ATTRBIT;
325}
326
327static inline bool xfs_sb_version_hasquota(struct xfs_sb *sbp)
328{
329 return (sbp->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
330}
331
332static inline void xfs_sb_version_addquota(struct xfs_sb *sbp)
333{
334 sbp->sb_versionnum |= XFS_SB_VERSION_QUOTABIT;
335}
336
337static inline bool xfs_sb_version_hasalign(struct xfs_sb *sbp)
338{
339 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
340 (sbp->sb_versionnum & XFS_SB_VERSION_ALIGNBIT));
341}
342
343static inline bool xfs_sb_version_hasdalign(struct xfs_sb *sbp)
344{
345 return (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
346}
347
348static inline bool xfs_sb_version_haslogv2(struct xfs_sb *sbp)
349{
350 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
351 (sbp->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
352}
353
354static inline bool xfs_sb_version_hasextflgbit(struct xfs_sb *sbp)
355{
356 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
357 (sbp->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
358}
359
360static inline bool xfs_sb_version_hassector(struct xfs_sb *sbp)
361{
362 return (sbp->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
363}
364
365static inline bool xfs_sb_version_hasasciici(struct xfs_sb *sbp)
366{
367 return (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT);
368}
369
370static inline bool xfs_sb_version_hasmorebits(struct xfs_sb *sbp)
371{
372 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
373 (sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
374}
375
376
377
378
379static inline bool xfs_sb_version_haslazysbcount(struct xfs_sb *sbp)
380{
381 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
382 (xfs_sb_version_hasmorebits(sbp) &&
383 (sbp->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT));
384}
385
386static inline bool xfs_sb_version_hasattr2(struct xfs_sb *sbp)
387{
388 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
389 (xfs_sb_version_hasmorebits(sbp) &&
390 (sbp->sb_features2 & XFS_SB_VERSION2_ATTR2BIT));
391}
392
393static inline void xfs_sb_version_addattr2(struct xfs_sb *sbp)
394{
395 sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
396 sbp->sb_features2 |= XFS_SB_VERSION2_ATTR2BIT;
397}
398
399static inline void xfs_sb_version_removeattr2(struct xfs_sb *sbp)
400{
401 sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT;
402 if (!sbp->sb_features2)
403 sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT;
404}
405
406static inline bool xfs_sb_version_hasprojid32bit(struct xfs_sb *sbp)
407{
408 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
409 (xfs_sb_version_hasmorebits(sbp) &&
410 (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT));
411}
412
413static inline void xfs_sb_version_addprojid32bit(struct xfs_sb *sbp)
414{
415 sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
416 sbp->sb_features2 |= XFS_SB_VERSION2_PROJID32BIT;
417}
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436
437#define XFS_SB_FEAT_COMPAT_ALL 0
438#define XFS_SB_FEAT_COMPAT_UNKNOWN ~XFS_SB_FEAT_COMPAT_ALL
439static inline bool
440xfs_sb_has_compat_feature(
441 struct xfs_sb *sbp,
442 __uint32_t feature)
443{
444 return (sbp->sb_features_compat & feature) != 0;
445}
446
447#define XFS_SB_FEAT_RO_COMPAT_FINOBT (1 << 0)
448#define XFS_SB_FEAT_RO_COMPAT_ALL \
449 (XFS_SB_FEAT_RO_COMPAT_FINOBT)
450#define XFS_SB_FEAT_RO_COMPAT_UNKNOWN ~XFS_SB_FEAT_RO_COMPAT_ALL
451static inline bool
452xfs_sb_has_ro_compat_feature(
453 struct xfs_sb *sbp,
454 __uint32_t feature)
455{
456 return (sbp->sb_features_ro_compat & feature) != 0;
457}
458
459#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0)
460#define XFS_SB_FEAT_INCOMPAT_ALL \
461 (XFS_SB_FEAT_INCOMPAT_FTYPE)
462
463#define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL
464static inline bool
465xfs_sb_has_incompat_feature(
466 struct xfs_sb *sbp,
467 __uint32_t feature)
468{
469 return (sbp->sb_features_incompat & feature) != 0;
470}
471
472#define XFS_SB_FEAT_INCOMPAT_LOG_ALL 0
473#define XFS_SB_FEAT_INCOMPAT_LOG_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_LOG_ALL
474static inline bool
475xfs_sb_has_incompat_log_feature(
476 struct xfs_sb *sbp,
477 __uint32_t feature)
478{
479 return (sbp->sb_features_log_incompat & feature) != 0;
480}
481
482
483
484
485static inline int xfs_sb_version_hascrc(struct xfs_sb *sbp)
486{
487 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
488}
489
490static inline int xfs_sb_version_has_pquotino(struct xfs_sb *sbp)
491{
492 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
493}
494
495static inline int xfs_sb_version_hasftype(struct xfs_sb *sbp)
496{
497 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
498 xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_FTYPE)) ||
499 (xfs_sb_version_hasmorebits(sbp) &&
500 (sbp->sb_features2 & XFS_SB_VERSION2_FTYPE));
501}
502
503static inline int xfs_sb_version_hasfinobt(xfs_sb_t *sbp)
504{
505 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
506 (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_FINOBT);
507}
508
509
510
511
512
513static inline bool
514xfs_is_quota_inode(struct xfs_sb *sbp, xfs_ino_t ino)
515{
516 return (ino == sbp->sb_uquotino ||
517 ino == sbp->sb_gquotino ||
518 ino == sbp->sb_pquotino);
519}
520
521#define XFS_SB_DADDR ((xfs_daddr_t)0)
522#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
523#define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)((bp)->b_addr))
524
525#define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
526#define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \
527 xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d))
528#define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \
529 XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
530
531
532
533
534#define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
535
536
537
538
539#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
540#define XFS_BB_TO_FSB(mp,bb) \
541 (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
542#define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
543
544
545
546
547#define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
548#define XFS_B_TO_FSB(mp,b) \
549 ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
550#define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
551#define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
552
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554
555
556
557
558
559#define XFS_AGF_MAGIC 0x58414746
560#define XFS_AGI_MAGIC 0x58414749
561#define XFS_AGFL_MAGIC 0x5841464c
562#define XFS_AGF_VERSION 1
563#define XFS_AGI_VERSION 1
564
565#define XFS_AGF_GOOD_VERSION(v) ((v) == XFS_AGF_VERSION)
566#define XFS_AGI_GOOD_VERSION(v) ((v) == XFS_AGI_VERSION)
567
568
569
570
571
572#define XFS_BTNUM_AGF ((int)XFS_BTNUM_CNTi + 1)
573
574
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576
577
578
579
580typedef struct xfs_agf {
581
582
583
584 __be32 agf_magicnum;
585 __be32 agf_versionnum;
586 __be32 agf_seqno;
587 __be32 agf_length;
588
589
590
591 __be32 agf_roots[XFS_BTNUM_AGF];
592 __be32 agf_spare0;
593 __be32 agf_levels[XFS_BTNUM_AGF];
594 __be32 agf_spare1;
595
596 __be32 agf_flfirst;
597 __be32 agf_fllast;
598 __be32 agf_flcount;
599 __be32 agf_freeblks;
600
601 __be32 agf_longest;
602 __be32 agf_btreeblks;
603 uuid_t agf_uuid;
604
605
606
607
608
609
610 __be64 agf_spare64[16];
611
612
613 __be64 agf_lsn;
614 __be32 agf_crc;
615 __be32 agf_spare2;
616
617
618} xfs_agf_t;
619
620#define XFS_AGF_CRC_OFF offsetof(struct xfs_agf, agf_crc)
621
622#define XFS_AGF_MAGICNUM 0x00000001
623#define XFS_AGF_VERSIONNUM 0x00000002
624#define XFS_AGF_SEQNO 0x00000004
625#define XFS_AGF_LENGTH 0x00000008
626#define XFS_AGF_ROOTS 0x00000010
627#define XFS_AGF_LEVELS 0x00000020
628#define XFS_AGF_FLFIRST 0x00000040
629#define XFS_AGF_FLLAST 0x00000080
630#define XFS_AGF_FLCOUNT 0x00000100
631#define XFS_AGF_FREEBLKS 0x00000200
632#define XFS_AGF_LONGEST 0x00000400
633#define XFS_AGF_BTREEBLKS 0x00000800
634#define XFS_AGF_UUID 0x00001000
635#define XFS_AGF_NUM_BITS 13
636#define XFS_AGF_ALL_BITS ((1 << XFS_AGF_NUM_BITS) - 1)
637
638#define XFS_AGF_FLAGS \
639 { XFS_AGF_MAGICNUM, "MAGICNUM" }, \
640 { XFS_AGF_VERSIONNUM, "VERSIONNUM" }, \
641 { XFS_AGF_SEQNO, "SEQNO" }, \
642 { XFS_AGF_LENGTH, "LENGTH" }, \
643 { XFS_AGF_ROOTS, "ROOTS" }, \
644 { XFS_AGF_LEVELS, "LEVELS" }, \
645 { XFS_AGF_FLFIRST, "FLFIRST" }, \
646 { XFS_AGF_FLLAST, "FLLAST" }, \
647 { XFS_AGF_FLCOUNT, "FLCOUNT" }, \
648 { XFS_AGF_FREEBLKS, "FREEBLKS" }, \
649 { XFS_AGF_LONGEST, "LONGEST" }, \
650 { XFS_AGF_BTREEBLKS, "BTREEBLKS" }, \
651 { XFS_AGF_UUID, "UUID" }
652
653
654#define XFS_AGF_DADDR(mp) ((xfs_daddr_t)(1 << (mp)->m_sectbb_log))
655#define XFS_AGF_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp))
656#define XFS_BUF_TO_AGF(bp) ((xfs_agf_t *)((bp)->b_addr))
657
658
659
660
661#define XFS_AGI_UNLINKED_BUCKETS 64
662
663typedef struct xfs_agi {
664
665
666
667 __be32 agi_magicnum;
668 __be32 agi_versionnum;
669 __be32 agi_seqno;
670 __be32 agi_length;
671
672
673
674
675
676 __be32 agi_count;
677 __be32 agi_root;
678 __be32 agi_level;
679 __be32 agi_freecount;
680
681 __be32 agi_newino;
682 __be32 agi_dirino;
683
684
685
686
687 __be32 agi_unlinked[XFS_AGI_UNLINKED_BUCKETS];
688
689
690
691 uuid_t agi_uuid;
692 __be32 agi_crc;
693 __be32 agi_pad32;
694 __be64 agi_lsn;
695
696 __be32 agi_free_root;
697 __be32 agi_free_level;
698
699
700} xfs_agi_t;
701
702#define XFS_AGI_CRC_OFF offsetof(struct xfs_agi, agi_crc)
703
704#define XFS_AGI_MAGICNUM (1 << 0)
705#define XFS_AGI_VERSIONNUM (1 << 1)
706#define XFS_AGI_SEQNO (1 << 2)
707#define XFS_AGI_LENGTH (1 << 3)
708#define XFS_AGI_COUNT (1 << 4)
709#define XFS_AGI_ROOT (1 << 5)
710#define XFS_AGI_LEVEL (1 << 6)
711#define XFS_AGI_FREECOUNT (1 << 7)
712#define XFS_AGI_NEWINO (1 << 8)
713#define XFS_AGI_DIRINO (1 << 9)
714#define XFS_AGI_UNLINKED (1 << 10)
715#define XFS_AGI_NUM_BITS_R1 11
716#define XFS_AGI_ALL_BITS_R1 ((1 << XFS_AGI_NUM_BITS_R1) - 1)
717#define XFS_AGI_FREE_ROOT (1 << 11)
718#define XFS_AGI_FREE_LEVEL (1 << 12)
719#define XFS_AGI_NUM_BITS_R2 13
720
721
722#define XFS_AGI_DADDR(mp) ((xfs_daddr_t)(2 << (mp)->m_sectbb_log))
723#define XFS_AGI_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGI_DADDR(mp))
724#define XFS_BUF_TO_AGI(bp) ((xfs_agi_t *)((bp)->b_addr))
725
726
727
728
729
730#define XFS_AGFL_DADDR(mp) ((xfs_daddr_t)(3 << (mp)->m_sectbb_log))
731#define XFS_AGFL_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGFL_DADDR(mp))
732#define XFS_BUF_TO_AGFL(bp) ((xfs_agfl_t *)((bp)->b_addr))
733
734#define XFS_BUF_TO_AGFL_BNO(mp, bp) \
735 (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
736 &(XFS_BUF_TO_AGFL(bp)->agfl_bno[0]) : \
737 (__be32 *)(bp)->b_addr)
738
739
740
741
742
743
744#define XFS_AGFL_SIZE(mp) \
745 (((mp)->m_sb.sb_sectsize - \
746 (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
747 sizeof(struct xfs_agfl) : 0)) / \
748 sizeof(xfs_agblock_t))
749
750typedef struct xfs_agfl {
751 __be32 agfl_magicnum;
752 __be32 agfl_seqno;
753 uuid_t agfl_uuid;
754 __be64 agfl_lsn;
755 __be32 agfl_crc;
756 __be32 agfl_bno[];
757} xfs_agfl_t;
758
759#define XFS_AGFL_CRC_OFF offsetof(struct xfs_agfl, agfl_crc)
760
761
762#define XFS_AG_MAXLEVELS(mp) ((mp)->m_ag_maxlevels)
763#define XFS_MIN_FREELIST_RAW(bl,cl,mp) \
764 (MIN(bl + 1, XFS_AG_MAXLEVELS(mp)) + MIN(cl + 1, XFS_AG_MAXLEVELS(mp)))
765#define XFS_MIN_FREELIST(a,mp) \
766 (XFS_MIN_FREELIST_RAW( \
767 be32_to_cpu((a)->agf_levels[XFS_BTNUM_BNOi]), \
768 be32_to_cpu((a)->agf_levels[XFS_BTNUM_CNTi]), mp))
769#define XFS_MIN_FREELIST_PAG(pag,mp) \
770 (XFS_MIN_FREELIST_RAW( \
771 (unsigned int)(pag)->pagf_levels[XFS_BTNUM_BNOi], \
772 (unsigned int)(pag)->pagf_levels[XFS_BTNUM_CNTi], mp))
773
774#define XFS_AGB_TO_FSB(mp,agno,agbno) \
775 (((xfs_fsblock_t)(agno) << (mp)->m_sb.sb_agblklog) | (agbno))
776#define XFS_FSB_TO_AGNO(mp,fsbno) \
777 ((xfs_agnumber_t)((fsbno) >> (mp)->m_sb.sb_agblklog))
778#define XFS_FSB_TO_AGBNO(mp,fsbno) \
779 ((xfs_agblock_t)((fsbno) & xfs_mask32lo((mp)->m_sb.sb_agblklog)))
780#define XFS_AGB_TO_DADDR(mp,agno,agbno) \
781 ((xfs_daddr_t)XFS_FSB_TO_BB(mp, \
782 (xfs_fsblock_t)(agno) * (mp)->m_sb.sb_agblocks + (agbno)))
783#define XFS_AG_DADDR(mp,agno,d) (XFS_AGB_TO_DADDR(mp, agno, 0) + (d))
784
785
786
787
788
789#define XFS_AG_CHECK_DADDR(mp,d,len) \
790 ((len) == 1 ? \
791 ASSERT((d) == XFS_SB_DADDR || \
792 xfs_daddr_to_agbno(mp, d) != XFS_SB_DADDR) : \
793 ASSERT(xfs_daddr_to_agno(mp, d) == \
794 xfs_daddr_to_agno(mp, (d) + (len) - 1)))
795
796typedef struct xfs_timestamp {
797 __be32 t_sec;
798 __be32 t_nsec;
799} xfs_timestamp_t;
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818#define XFS_DINODE_MAGIC 0x494e
819#define XFS_DINODE_GOOD_VERSION(v) ((v) >= 1 && (v) <= 3)
820typedef struct xfs_dinode {
821 __be16 di_magic;
822 __be16 di_mode;
823 __u8 di_version;
824 __u8 di_format;
825 __be16 di_onlink;
826 __be32 di_uid;
827 __be32 di_gid;
828 __be32 di_nlink;
829 __be16 di_projid_lo;
830 __be16 di_projid_hi;
831 __u8 di_pad[6];
832 __be16 di_flushiter;
833 xfs_timestamp_t di_atime;
834 xfs_timestamp_t di_mtime;
835 xfs_timestamp_t di_ctime;
836 __be64 di_size;
837 __be64 di_nblocks;
838 __be32 di_extsize;
839 __be32 di_nextents;
840 __be16 di_anextents;
841 __u8 di_forkoff;
842 __s8 di_aformat;
843 __be32 di_dmevmask;
844 __be16 di_dmstate;
845 __be16 di_flags;
846 __be32 di_gen;
847
848
849 __be32 di_next_unlinked;
850
851
852 __le32 di_crc;
853 __be64 di_changecount;
854 __be64 di_lsn;
855 __be64 di_flags2;
856 __u8 di_pad2[16];
857
858
859 xfs_timestamp_t di_crtime;
860 __be64 di_ino;
861 uuid_t di_uuid;
862
863
864} xfs_dinode_t;
865
866#define XFS_DINODE_CRC_OFF offsetof(struct xfs_dinode, di_crc)
867
868#define DI_MAX_FLUSH 0xffff
869
870
871
872
873
874static inline uint xfs_dinode_size(int version)
875{
876 if (version == 3)
877 return sizeof(struct xfs_dinode);
878 return offsetof(struct xfs_dinode, di_crc);
879}
880
881
882
883
884
885
886#define XFS_MAXLINK ((1U << 31) - 1U)
887#define XFS_MAXLINK_1 65535U
888
889
890
891
892typedef enum xfs_dinode_fmt {
893 XFS_DINODE_FMT_DEV,
894 XFS_DINODE_FMT_LOCAL,
895 XFS_DINODE_FMT_EXTENTS,
896 XFS_DINODE_FMT_BTREE,
897 XFS_DINODE_FMT_UUID
898} xfs_dinode_fmt_t;
899
900
901
902
903#define XFS_DINODE_MIN_LOG 8
904#define XFS_DINODE_MAX_LOG 11
905#define XFS_DINODE_MIN_SIZE (1 << XFS_DINODE_MIN_LOG)
906#define XFS_DINODE_MAX_SIZE (1 << XFS_DINODE_MAX_LOG)
907
908
909
910
911#define XFS_LITINO(mp, version) \
912 ((int)(((mp)->m_sb.sb_inodesize) - xfs_dinode_size(version)))
913
914
915
916
917#define XFS_DFORK_Q(dip) ((dip)->di_forkoff != 0)
918#define XFS_DFORK_BOFF(dip) ((int)((dip)->di_forkoff << 3))
919
920#define XFS_DFORK_DSIZE(dip,mp) \
921 (XFS_DFORK_Q(dip) ? \
922 XFS_DFORK_BOFF(dip) : \
923 XFS_LITINO(mp, (dip)->di_version))
924#define XFS_DFORK_ASIZE(dip,mp) \
925 (XFS_DFORK_Q(dip) ? \
926 XFS_LITINO(mp, (dip)->di_version) - XFS_DFORK_BOFF(dip) : \
927 0)
928#define XFS_DFORK_SIZE(dip,mp,w) \
929 ((w) == XFS_DATA_FORK ? \
930 XFS_DFORK_DSIZE(dip, mp) : \
931 XFS_DFORK_ASIZE(dip, mp))
932
933
934
935
936#define XFS_DFORK_DPTR(dip) \
937 ((char *)dip + xfs_dinode_size(dip->di_version))
938#define XFS_DFORK_APTR(dip) \
939 (XFS_DFORK_DPTR(dip) + XFS_DFORK_BOFF(dip))
940#define XFS_DFORK_PTR(dip,w) \
941 ((w) == XFS_DATA_FORK ? XFS_DFORK_DPTR(dip) : XFS_DFORK_APTR(dip))
942
943#define XFS_DFORK_FORMAT(dip,w) \
944 ((w) == XFS_DATA_FORK ? \
945 (dip)->di_format : \
946 (dip)->di_aformat)
947#define XFS_DFORK_NEXTENTS(dip,w) \
948 ((w) == XFS_DATA_FORK ? \
949 be32_to_cpu((dip)->di_nextents) : \
950 be16_to_cpu((dip)->di_anextents))
951
952
953
954
955
956static inline xfs_dev_t xfs_dinode_get_rdev(struct xfs_dinode *dip)
957{
958 return be32_to_cpu(*(__be32 *)XFS_DFORK_DPTR(dip));
959}
960
961static inline void xfs_dinode_put_rdev(struct xfs_dinode *dip, xfs_dev_t rdev)
962{
963 *(__be32 *)XFS_DFORK_DPTR(dip) = cpu_to_be32(rdev);
964}
965
966
967
968
969
970
971#define XFS_DIFLAG_REALTIME_BIT 0
972#define XFS_DIFLAG_PREALLOC_BIT 1
973#define XFS_DIFLAG_NEWRTBM_BIT 2
974#define XFS_DIFLAG_IMMUTABLE_BIT 3
975#define XFS_DIFLAG_APPEND_BIT 4
976#define XFS_DIFLAG_SYNC_BIT 5
977#define XFS_DIFLAG_NOATIME_BIT 6
978#define XFS_DIFLAG_NODUMP_BIT 7
979#define XFS_DIFLAG_RTINHERIT_BIT 8
980#define XFS_DIFLAG_PROJINHERIT_BIT 9
981#define XFS_DIFLAG_NOSYMLINKS_BIT 10
982#define XFS_DIFLAG_EXTSIZE_BIT 11
983#define XFS_DIFLAG_EXTSZINHERIT_BIT 12
984#define XFS_DIFLAG_NODEFRAG_BIT 13
985#define XFS_DIFLAG_FILESTREAM_BIT 14
986#define XFS_DIFLAG_REALTIME (1 << XFS_DIFLAG_REALTIME_BIT)
987#define XFS_DIFLAG_PREALLOC (1 << XFS_DIFLAG_PREALLOC_BIT)
988#define XFS_DIFLAG_NEWRTBM (1 << XFS_DIFLAG_NEWRTBM_BIT)
989#define XFS_DIFLAG_IMMUTABLE (1 << XFS_DIFLAG_IMMUTABLE_BIT)
990#define XFS_DIFLAG_APPEND (1 << XFS_DIFLAG_APPEND_BIT)
991#define XFS_DIFLAG_SYNC (1 << XFS_DIFLAG_SYNC_BIT)
992#define XFS_DIFLAG_NOATIME (1 << XFS_DIFLAG_NOATIME_BIT)
993#define XFS_DIFLAG_NODUMP (1 << XFS_DIFLAG_NODUMP_BIT)
994#define XFS_DIFLAG_RTINHERIT (1 << XFS_DIFLAG_RTINHERIT_BIT)
995#define XFS_DIFLAG_PROJINHERIT (1 << XFS_DIFLAG_PROJINHERIT_BIT)
996#define XFS_DIFLAG_NOSYMLINKS (1 << XFS_DIFLAG_NOSYMLINKS_BIT)
997#define XFS_DIFLAG_EXTSIZE (1 << XFS_DIFLAG_EXTSIZE_BIT)
998#define XFS_DIFLAG_EXTSZINHERIT (1 << XFS_DIFLAG_EXTSZINHERIT_BIT)
999#define XFS_DIFLAG_NODEFRAG (1 << XFS_DIFLAG_NODEFRAG_BIT)
1000#define XFS_DIFLAG_FILESTREAM (1 << XFS_DIFLAG_FILESTREAM_BIT)
1001
1002#define XFS_DIFLAG_ANY \
1003 (XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \
1004 XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \
1005 XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \
1006 XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS | XFS_DIFLAG_EXTSIZE | \
1007 XFS_DIFLAG_EXTSZINHERIT | XFS_DIFLAG_NODEFRAG | XFS_DIFLAG_FILESTREAM)
1008
1009
1010
1011
1012
1013
1014
1015
1016#define XFS_INO_MASK(k) (__uint32_t)((1ULL << (k)) - 1)
1017#define XFS_INO_OFFSET_BITS(mp) (mp)->m_sb.sb_inopblog
1018#define XFS_INO_AGBNO_BITS(mp) (mp)->m_sb.sb_agblklog
1019#define XFS_INO_AGINO_BITS(mp) (mp)->m_agino_log
1020#define XFS_INO_AGNO_BITS(mp) (mp)->m_agno_log
1021#define XFS_INO_BITS(mp) \
1022 XFS_INO_AGNO_BITS(mp) + XFS_INO_AGINO_BITS(mp)
1023#define XFS_INO_TO_AGNO(mp,i) \
1024 ((xfs_agnumber_t)((i) >> XFS_INO_AGINO_BITS(mp)))
1025#define XFS_INO_TO_AGINO(mp,i) \
1026 ((xfs_agino_t)(i) & XFS_INO_MASK(XFS_INO_AGINO_BITS(mp)))
1027#define XFS_INO_TO_AGBNO(mp,i) \
1028 (((xfs_agblock_t)(i) >> XFS_INO_OFFSET_BITS(mp)) & \
1029 XFS_INO_MASK(XFS_INO_AGBNO_BITS(mp)))
1030#define XFS_INO_TO_OFFSET(mp,i) \
1031 ((int)(i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
1032#define XFS_INO_TO_FSB(mp,i) \
1033 XFS_AGB_TO_FSB(mp, XFS_INO_TO_AGNO(mp,i), XFS_INO_TO_AGBNO(mp,i))
1034#define XFS_AGINO_TO_INO(mp,a,i) \
1035 (((xfs_ino_t)(a) << XFS_INO_AGINO_BITS(mp)) | (i))
1036#define XFS_AGINO_TO_AGBNO(mp,i) ((i) >> XFS_INO_OFFSET_BITS(mp))
1037#define XFS_AGINO_TO_OFFSET(mp,i) \
1038 ((i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
1039#define XFS_OFFBNO_TO_AGINO(mp,b,o) \
1040 ((xfs_agino_t)(((b) << XFS_INO_OFFSET_BITS(mp)) | (o)))
1041
1042#define XFS_MAXINUMBER ((xfs_ino_t)((1ULL << 56) - 1ULL))
1043#define XFS_MAXINUMBER_32 ((xfs_ino_t)((1ULL << 32) - 1ULL))
1044
1045
1046
1047
1048
1049
1050#define XFS_MAX_RTEXTSIZE (1024 * 1024 * 1024)
1051#define XFS_DFL_RTEXTSIZE (64 * 1024)
1052#define XFS_MIN_RTEXTSIZE (4 * 1024)
1053
1054#define XFS_BLOCKSIZE(mp) ((mp)->m_sb.sb_blocksize)
1055#define XFS_BLOCKMASK(mp) ((mp)->m_blockmask)
1056#define XFS_BLOCKWSIZE(mp) ((mp)->m_blockwsize)
1057#define XFS_BLOCKWMASK(mp) ((mp)->m_blockwmask)
1058
1059
1060
1061
1062#define XFS_SUMOFFS(mp,ls,bb) ((int)((ls) * (mp)->m_sb.sb_rbmblocks + (bb)))
1063#define XFS_SUMOFFSTOBLOCK(mp,s) \
1064 (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog)
1065#define XFS_SUMPTR(mp,bp,so) \
1066 ((xfs_suminfo_t *)((bp)->b_addr + \
1067 (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp))))
1068
1069#define XFS_BITTOBLOCK(mp,bi) ((bi) >> (mp)->m_blkbit_log)
1070#define XFS_BLOCKTOBIT(mp,bb) ((bb) << (mp)->m_blkbit_log)
1071#define XFS_BITTOWORD(mp,bi) \
1072 ((int)(((bi) >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp)))
1073
1074#define XFS_RTMIN(a,b) ((a) < (b) ? (a) : (b))
1075#define XFS_RTMAX(a,b) ((a) > (b) ? (a) : (b))
1076
1077#define XFS_RTLOBIT(w) xfs_lowbit32(w)
1078#define XFS_RTHIBIT(w) xfs_highbit32(w)
1079
1080#define XFS_RTBLOCKLOG(b) xfs_highbit64(b)
1081
1082
1083
1084
1085#define XFS_DQUOT_MAGIC 0x4451
1086#define XFS_DQUOT_VERSION (u_int8_t)0x01
1087
1088
1089
1090
1091
1092
1093
1094typedef struct xfs_disk_dquot {
1095 __be16 d_magic;
1096 __u8 d_version;
1097 __u8 d_flags;
1098 __be32 d_id;
1099 __be64 d_blk_hardlimit;
1100 __be64 d_blk_softlimit;
1101 __be64 d_ino_hardlimit;
1102 __be64 d_ino_softlimit;
1103 __be64 d_bcount;
1104 __be64 d_icount;
1105 __be32 d_itimer;
1106
1107 __be32 d_btimer;
1108 __be16 d_iwarns;
1109 __be16 d_bwarns;
1110 __be32 d_pad0;
1111 __be64 d_rtb_hardlimit;
1112 __be64 d_rtb_softlimit;
1113 __be64 d_rtbcount;
1114 __be32 d_rtbtimer;
1115 __be16 d_rtbwarns;
1116 __be16 d_pad;
1117} xfs_disk_dquot_t;
1118
1119
1120
1121
1122
1123typedef struct xfs_dqblk {
1124 xfs_disk_dquot_t dd_diskdq;
1125 char dd_fill[4];
1126
1127
1128
1129
1130 __be32 dd_crc;
1131 __be64 dd_lsn;
1132 uuid_t dd_uuid;
1133} xfs_dqblk_t;
1134
1135#define XFS_DQUOT_CRC_OFF offsetof(struct xfs_dqblk, dd_crc)
1136
1137
1138
1139
1140#define XFS_SYMLINK_MAGIC 0x58534c4d
1141
1142struct xfs_dsymlink_hdr {
1143 __be32 sl_magic;
1144 __be32 sl_offset;
1145 __be32 sl_bytes;
1146 __be32 sl_crc;
1147 uuid_t sl_uuid;
1148 __be64 sl_owner;
1149 __be64 sl_blkno;
1150 __be64 sl_lsn;
1151};
1152
1153#define XFS_SYMLINK_CRC_OFF offsetof(struct xfs_dsymlink_hdr, sl_crc)
1154
1155
1156
1157
1158
1159
1160#define XFS_SYMLINK_MAPS 3
1161
1162#define XFS_SYMLINK_BUF_SPACE(mp, bufsize) \
1163 ((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \
1164 sizeof(struct xfs_dsymlink_hdr) : 0))
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174#define XFS_ABTB_MAGIC 0x41425442
1175#define XFS_ABTB_CRC_MAGIC 0x41423342
1176#define XFS_ABTC_MAGIC 0x41425443
1177#define XFS_ABTC_CRC_MAGIC 0x41423343
1178
1179
1180
1181
1182typedef struct xfs_alloc_rec {
1183 __be32 ar_startblock;
1184 __be32 ar_blockcount;
1185} xfs_alloc_rec_t, xfs_alloc_key_t;
1186
1187typedef struct xfs_alloc_rec_incore {
1188 xfs_agblock_t ar_startblock;
1189 xfs_extlen_t ar_blockcount;
1190} xfs_alloc_rec_incore_t;
1191
1192
1193typedef __be32 xfs_alloc_ptr_t;
1194
1195
1196
1197
1198
1199#define XFS_BNO_BLOCK(mp) ((xfs_agblock_t)(XFS_AGFL_BLOCK(mp) + 1))
1200#define XFS_CNT_BLOCK(mp) ((xfs_agblock_t)(XFS_BNO_BLOCK(mp) + 1))
1201
1202
1203
1204
1205
1206
1207
1208#define XFS_IBT_MAGIC 0x49414254
1209#define XFS_IBT_CRC_MAGIC 0x49414233
1210#define XFS_FIBT_MAGIC 0x46494254
1211#define XFS_FIBT_CRC_MAGIC 0x46494233
1212
1213typedef __uint64_t xfs_inofree_t;
1214#define XFS_INODES_PER_CHUNK (NBBY * sizeof(xfs_inofree_t))
1215#define XFS_INODES_PER_CHUNK_LOG (XFS_NBBYLOG + 3)
1216#define XFS_INOBT_ALL_FREE ((xfs_inofree_t)-1)
1217#define XFS_INOBT_MASK(i) ((xfs_inofree_t)1 << (i))
1218
1219static inline xfs_inofree_t xfs_inobt_maskn(int i, int n)
1220{
1221 return ((n >= XFS_INODES_PER_CHUNK ? 0 : XFS_INOBT_MASK(n)) - 1) << i;
1222}
1223
1224
1225
1226
1227typedef struct xfs_inobt_rec {
1228 __be32 ir_startino;
1229 __be32 ir_freecount;
1230 __be64 ir_free;
1231} xfs_inobt_rec_t;
1232
1233typedef struct xfs_inobt_rec_incore {
1234 xfs_agino_t ir_startino;
1235 __int32_t ir_freecount;
1236 xfs_inofree_t ir_free;
1237} xfs_inobt_rec_incore_t;
1238
1239
1240
1241
1242
1243typedef struct xfs_inobt_key {
1244 __be32 ir_startino;
1245} xfs_inobt_key_t;
1246
1247
1248typedef __be32 xfs_inobt_ptr_t;
1249
1250
1251
1252
1253#define XFS_IBT_BLOCK(mp) ((xfs_agblock_t)(XFS_CNT_BLOCK(mp) + 1))
1254#define XFS_FIBT_BLOCK(mp) ((xfs_agblock_t)(XFS_IBT_BLOCK(mp) + 1))
1255
1256
1257
1258
1259
1260
1261#define XFS_PREALLOC_BLOCKS(mp) \
1262 (xfs_sb_version_hasfinobt(&((mp)->m_sb)) ? \
1263 XFS_FIBT_BLOCK(mp) + 1 : \
1264 XFS_IBT_BLOCK(mp) + 1)
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274#define XFS_BMAP_MAGIC 0x424d4150
1275#define XFS_BMAP_CRC_MAGIC 0x424d4133
1276
1277
1278
1279
1280typedef struct xfs_bmdr_block {
1281 __be16 bb_level;
1282 __be16 bb_numrecs;
1283} xfs_bmdr_block_t;
1284
1285
1286
1287
1288
1289
1290
1291
1292#define BMBT_EXNTFLAG_BITLEN 1
1293#define BMBT_STARTOFF_BITLEN 54
1294#define BMBT_STARTBLOCK_BITLEN 52
1295#define BMBT_BLOCKCOUNT_BITLEN 21
1296
1297typedef struct xfs_bmbt_rec {
1298 __be64 l0, l1;
1299} xfs_bmbt_rec_t;
1300
1301typedef __uint64_t xfs_bmbt_rec_base_t;
1302typedef xfs_bmbt_rec_t xfs_bmdr_rec_t;
1303
1304typedef struct xfs_bmbt_rec_host {
1305 __uint64_t l0, l1;
1306} xfs_bmbt_rec_host_t;
1307
1308
1309
1310
1311#define STARTBLOCKVALBITS 17
1312#define STARTBLOCKMASKBITS (15 + 20)
1313#define STARTBLOCKMASK \
1314 (((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
1315
1316static inline int isnullstartblock(xfs_fsblock_t x)
1317{
1318 return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK;
1319}
1320
1321static inline xfs_fsblock_t nullstartblock(int k)
1322{
1323 ASSERT(k < (1 << STARTBLOCKVALBITS));
1324 return STARTBLOCKMASK | (k);
1325}
1326
1327static inline xfs_filblks_t startblockval(xfs_fsblock_t x)
1328{
1329 return (xfs_filblks_t)((x) & ~STARTBLOCKMASK);
1330}
1331
1332
1333
1334
1335typedef enum {
1336 XFS_EXTFMT_NOSTATE = 0,
1337 XFS_EXTFMT_HASSTATE
1338} xfs_exntfmt_t;
1339
1340
1341
1342
1343typedef enum {
1344 XFS_EXT_NORM, XFS_EXT_UNWRITTEN,
1345 XFS_EXT_DMAPI_OFFLINE, XFS_EXT_INVALID
1346} xfs_exntst_t;
1347
1348
1349
1350
1351typedef struct xfs_bmbt_irec
1352{
1353 xfs_fileoff_t br_startoff;
1354 xfs_fsblock_t br_startblock;
1355 xfs_filblks_t br_blockcount;
1356 xfs_exntst_t br_state;
1357} xfs_bmbt_irec_t;
1358
1359
1360
1361
1362typedef struct xfs_bmbt_key {
1363 __be64 br_startoff;
1364} xfs_bmbt_key_t, xfs_bmdr_key_t;
1365
1366
1367typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t;
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384struct xfs_btree_block {
1385 __be32 bb_magic;
1386 __be16 bb_level;
1387 __be16 bb_numrecs;
1388 union {
1389 struct {
1390 __be32 bb_leftsib;
1391 __be32 bb_rightsib;
1392
1393 __be64 bb_blkno;
1394 __be64 bb_lsn;
1395 uuid_t bb_uuid;
1396 __be32 bb_owner;
1397 __le32 bb_crc;
1398 } s;
1399 struct {
1400 __be64 bb_leftsib;
1401 __be64 bb_rightsib;
1402
1403 __be64 bb_blkno;
1404 __be64 bb_lsn;
1405 uuid_t bb_uuid;
1406 __be64 bb_owner;
1407 __le32 bb_crc;
1408 __be32 bb_pad;
1409 } l;
1410 } bb_u;
1411};
1412
1413#define XFS_BTREE_SBLOCK_LEN 16
1414#define XFS_BTREE_LBLOCK_LEN 24
1415
1416
1417#define XFS_BTREE_SBLOCK_CRC_LEN (XFS_BTREE_SBLOCK_LEN + 40)
1418#define XFS_BTREE_LBLOCK_CRC_LEN (XFS_BTREE_LBLOCK_LEN + 48)
1419
1420#define XFS_BTREE_SBLOCK_CRC_OFF \
1421 offsetof(struct xfs_btree_block, bb_u.s.bb_crc)
1422#define XFS_BTREE_LBLOCK_CRC_OFF \
1423 offsetof(struct xfs_btree_block, bb_u.l.bb_crc)
1424
1425
1426
1427
1428struct xfs_acl_entry {
1429 __be32 ae_tag;
1430 __be32 ae_id;
1431 __be16 ae_perm;
1432 __be16 ae_pad;
1433};
1434
1435struct xfs_acl {
1436 __be32 acl_cnt;
1437 struct xfs_acl_entry acl_entry[0];
1438};
1439
1440
1441
1442
1443
1444
1445#define XFS_ACL_MAX_ENTRIES(mp) \
1446 (xfs_sb_version_hascrc(&mp->m_sb) \
1447 ? (XATTR_SIZE_MAX - sizeof(struct xfs_acl)) / \
1448 sizeof(struct xfs_acl_entry) \
1449 : 25)
1450
1451#define XFS_ACL_MAX_SIZE(mp) \
1452 (sizeof(struct xfs_acl) + \
1453 sizeof(struct xfs_acl_entry) * XFS_ACL_MAX_ENTRIES((mp)))
1454
1455
1456#define SGI_ACL_FILE (unsigned char *)"SGI_ACL_FILE"
1457#define SGI_ACL_DEFAULT (unsigned char *)"SGI_ACL_DEFAULT"
1458#define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
1459#define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
1460
1461#endif
1462