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5
6#ifndef __XFS_FORMAT_H__
7#define __XFS_FORMAT_H__
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16
17
18struct xfs_mount;
19struct xfs_trans;
20struct xfs_inode;
21struct xfs_buf;
22struct xfs_ifork;
23
24
25
26
27
28
29#define XFS_SB_MAGIC 0x58465342
30#define XFS_SB_VERSION_1 1
31#define XFS_SB_VERSION_2 2
32#define XFS_SB_VERSION_3 3
33#define XFS_SB_VERSION_4 4
34#define XFS_SB_VERSION_5 5
35#define XFS_SB_VERSION_NUMBITS 0x000f
36#define XFS_SB_VERSION_ALLFBITS 0xfff0
37#define XFS_SB_VERSION_ATTRBIT 0x0010
38#define XFS_SB_VERSION_NLINKBIT 0x0020
39#define XFS_SB_VERSION_QUOTABIT 0x0040
40#define XFS_SB_VERSION_ALIGNBIT 0x0080
41#define XFS_SB_VERSION_DALIGNBIT 0x0100
42#define XFS_SB_VERSION_SHAREDBIT 0x0200
43#define XFS_SB_VERSION_LOGV2BIT 0x0400
44#define XFS_SB_VERSION_SECTORBIT 0x0800
45#define XFS_SB_VERSION_EXTFLGBIT 0x1000
46#define XFS_SB_VERSION_DIRV2BIT 0x2000
47#define XFS_SB_VERSION_BORGBIT 0x4000
48#define XFS_SB_VERSION_MOREBITSBIT 0x8000
49
50
51
52
53
54
55
56#define XFS_XATTR_SIZE_MAX (1 << 16)
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59
60
61
62
63#define XFS_SB_VERSION_OKBITS \
64 ((XFS_SB_VERSION_NUMBITS | XFS_SB_VERSION_ALLFBITS) & \
65 ~XFS_SB_VERSION_SHAREDBIT)
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67
68
69
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71
72
73
74#define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
75#define XFS_SB_VERSION2_LAZYSBCOUNTBIT 0x00000002
76#define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
77#define XFS_SB_VERSION2_ATTR2BIT 0x00000008
78#define XFS_SB_VERSION2_PARENTBIT 0x00000010
79#define XFS_SB_VERSION2_PROJID32BIT 0x00000080
80#define XFS_SB_VERSION2_CRCBIT 0x00000100
81#define XFS_SB_VERSION2_FTYPE 0x00000200
82
83#define XFS_SB_VERSION2_OKBITS \
84 (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \
85 XFS_SB_VERSION2_ATTR2BIT | \
86 XFS_SB_VERSION2_PROJID32BIT | \
87 XFS_SB_VERSION2_FTYPE)
88
89
90#define XFSLABEL_MAX 12
91
92
93
94
95
96typedef struct xfs_sb {
97 uint32_t sb_magicnum;
98 uint32_t sb_blocksize;
99 xfs_rfsblock_t sb_dblocks;
100 xfs_rfsblock_t sb_rblocks;
101 xfs_rtblock_t sb_rextents;
102 uuid_t sb_uuid;
103 xfs_fsblock_t sb_logstart;
104 xfs_ino_t sb_rootino;
105 xfs_ino_t sb_rbmino;
106 xfs_ino_t sb_rsumino;
107 xfs_agblock_t sb_rextsize;
108 xfs_agblock_t sb_agblocks;
109 xfs_agnumber_t sb_agcount;
110 xfs_extlen_t sb_rbmblocks;
111 xfs_extlen_t sb_logblocks;
112 uint16_t sb_versionnum;
113 uint16_t sb_sectsize;
114 uint16_t sb_inodesize;
115 uint16_t sb_inopblock;
116 char sb_fname[XFSLABEL_MAX];
117 uint8_t sb_blocklog;
118 uint8_t sb_sectlog;
119 uint8_t sb_inodelog;
120 uint8_t sb_inopblog;
121 uint8_t sb_agblklog;
122 uint8_t sb_rextslog;
123 uint8_t sb_inprogress;
124 uint8_t sb_imax_pct;
125
126
127
128
129
130
131 uint64_t sb_icount;
132 uint64_t sb_ifree;
133 uint64_t sb_fdblocks;
134 uint64_t sb_frextents;
135
136
137
138 xfs_ino_t sb_uquotino;
139 xfs_ino_t sb_gquotino;
140 uint16_t sb_qflags;
141 uint8_t sb_flags;
142 uint8_t sb_shared_vn;
143 xfs_extlen_t sb_inoalignmt;
144 uint32_t sb_unit;
145 uint32_t sb_width;
146 uint8_t sb_dirblklog;
147 uint8_t sb_logsectlog;
148 uint16_t sb_logsectsize;
149 uint32_t sb_logsunit;
150 uint32_t sb_features2;
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160
161 uint32_t sb_bad_features2;
162
163
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165
166 uint32_t sb_features_compat;
167 uint32_t sb_features_ro_compat;
168 uint32_t sb_features_incompat;
169 uint32_t sb_features_log_incompat;
170
171 uint32_t sb_crc;
172 xfs_extlen_t sb_spino_align;
173
174 xfs_ino_t sb_pquotino;
175 xfs_lsn_t sb_lsn;
176 uuid_t sb_meta_uuid;
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[XFSLABEL_MAX];
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
218
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_spino_align;
260
261 __be64 sb_pquotino;
262 __be64 sb_lsn;
263 uuid_t sb_meta_uuid;
264
265
266} xfs_dsb_t;
267
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270
271
272
273#define XFS_SBF_NOFLAGS 0x00
274#define XFS_SBF_READONLY 0x01
275
276
277
278
279#define XFS_SB_MAX_SHARED_VN 0
280
281#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
282
283
284
285
286static inline bool xfs_sb_good_v4_features(struct xfs_sb *sbp)
287{
288 if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT))
289 return false;
290 if (!(sbp->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT))
291 return false;
292
293
294 if ((sbp->sb_versionnum & ~XFS_SB_VERSION_OKBITS) ||
295 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) &&
296 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKBITS)))
297 return false;
298
299 return true;
300}
301
302static inline bool xfs_sb_good_version(struct xfs_sb *sbp)
303{
304 if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5)
305 return true;
306 if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4)
307 return xfs_sb_good_v4_features(sbp);
308 return false;
309}
310
311static inline bool xfs_sb_version_hasrealtime(struct xfs_sb *sbp)
312{
313 return sbp->sb_rblocks > 0;
314}
315
316
317
318
319
320static inline bool xfs_sb_has_mismatched_features2(struct xfs_sb *sbp)
321{
322 return sbp->sb_bad_features2 != sbp->sb_features2;
323}
324
325static inline bool xfs_sb_version_hasattr(struct xfs_sb *sbp)
326{
327 return (sbp->sb_versionnum & XFS_SB_VERSION_ATTRBIT);
328}
329
330static inline void xfs_sb_version_addattr(struct xfs_sb *sbp)
331{
332 sbp->sb_versionnum |= XFS_SB_VERSION_ATTRBIT;
333}
334
335static inline bool xfs_sb_version_hasquota(struct xfs_sb *sbp)
336{
337 return (sbp->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
338}
339
340static inline void xfs_sb_version_addquota(struct xfs_sb *sbp)
341{
342 sbp->sb_versionnum |= XFS_SB_VERSION_QUOTABIT;
343}
344
345static inline bool xfs_sb_version_hasalign(struct xfs_sb *sbp)
346{
347 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
348 (sbp->sb_versionnum & XFS_SB_VERSION_ALIGNBIT));
349}
350
351static inline bool xfs_sb_version_hasdalign(struct xfs_sb *sbp)
352{
353 return (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
354}
355
356static inline bool xfs_sb_version_haslogv2(struct xfs_sb *sbp)
357{
358 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
359 (sbp->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
360}
361
362static inline bool xfs_sb_version_hassector(struct xfs_sb *sbp)
363{
364 return (sbp->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
365}
366
367static inline bool xfs_sb_version_hasasciici(struct xfs_sb *sbp)
368{
369 return (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT);
370}
371
372static inline bool xfs_sb_version_hasmorebits(struct xfs_sb *sbp)
373{
374 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
375 (sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
376}
377
378
379
380
381static inline bool xfs_sb_version_haslazysbcount(struct xfs_sb *sbp)
382{
383 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
384 (xfs_sb_version_hasmorebits(sbp) &&
385 (sbp->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT));
386}
387
388static inline bool xfs_sb_version_hasattr2(struct xfs_sb *sbp)
389{
390 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
391 (xfs_sb_version_hasmorebits(sbp) &&
392 (sbp->sb_features2 & XFS_SB_VERSION2_ATTR2BIT));
393}
394
395static inline void xfs_sb_version_addattr2(struct xfs_sb *sbp)
396{
397 sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
398 sbp->sb_features2 |= XFS_SB_VERSION2_ATTR2BIT;
399}
400
401static inline void xfs_sb_version_removeattr2(struct xfs_sb *sbp)
402{
403 sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT;
404 if (!sbp->sb_features2)
405 sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT;
406}
407
408static inline bool xfs_sb_version_hasprojid32bit(struct xfs_sb *sbp)
409{
410 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
411 (xfs_sb_version_hasmorebits(sbp) &&
412 (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT));
413}
414
415static inline void xfs_sb_version_addprojid32bit(struct xfs_sb *sbp)
416{
417 sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
418 sbp->sb_features2 |= XFS_SB_VERSION2_PROJID32BIT;
419}
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437
438
439#define XFS_SB_FEAT_COMPAT_ALL 0
440#define XFS_SB_FEAT_COMPAT_UNKNOWN ~XFS_SB_FEAT_COMPAT_ALL
441static inline bool
442xfs_sb_has_compat_feature(
443 struct xfs_sb *sbp,
444 uint32_t feature)
445{
446 return (sbp->sb_features_compat & feature) != 0;
447}
448
449#define XFS_SB_FEAT_RO_COMPAT_FINOBT (1 << 0)
450#define XFS_SB_FEAT_RO_COMPAT_RMAPBT (1 << 1)
451#define XFS_SB_FEAT_RO_COMPAT_REFLINK (1 << 2)
452#define XFS_SB_FEAT_RO_COMPAT_ALL \
453 (XFS_SB_FEAT_RO_COMPAT_FINOBT | \
454 XFS_SB_FEAT_RO_COMPAT_RMAPBT | \
455 XFS_SB_FEAT_RO_COMPAT_REFLINK)
456#define XFS_SB_FEAT_RO_COMPAT_UNKNOWN ~XFS_SB_FEAT_RO_COMPAT_ALL
457static inline bool
458xfs_sb_has_ro_compat_feature(
459 struct xfs_sb *sbp,
460 uint32_t feature)
461{
462 return (sbp->sb_features_ro_compat & feature) != 0;
463}
464
465#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0)
466#define XFS_SB_FEAT_INCOMPAT_SPINODES (1 << 1)
467#define XFS_SB_FEAT_INCOMPAT_META_UUID (1 << 2)
468#define XFS_SB_FEAT_INCOMPAT_ALL \
469 (XFS_SB_FEAT_INCOMPAT_FTYPE| \
470 XFS_SB_FEAT_INCOMPAT_SPINODES| \
471 XFS_SB_FEAT_INCOMPAT_META_UUID)
472
473#define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL
474static inline bool
475xfs_sb_has_incompat_feature(
476 struct xfs_sb *sbp,
477 uint32_t feature)
478{
479 return (sbp->sb_features_incompat & feature) != 0;
480}
481
482#define XFS_SB_FEAT_INCOMPAT_LOG_ALL 0
483#define XFS_SB_FEAT_INCOMPAT_LOG_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_LOG_ALL
484static inline bool
485xfs_sb_has_incompat_log_feature(
486 struct xfs_sb *sbp,
487 uint32_t feature)
488{
489 return (sbp->sb_features_log_incompat & feature) != 0;
490}
491
492
493
494
495static inline bool xfs_sb_version_hascrc(struct xfs_sb *sbp)
496{
497 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
498}
499
500
501
502
503
504static inline bool xfs_sb_version_has_v3inode(struct xfs_sb *sbp)
505{
506 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
507}
508
509static inline bool xfs_dinode_good_version(struct xfs_sb *sbp,
510 uint8_t version)
511{
512 if (xfs_sb_version_has_v3inode(sbp))
513 return version == 3;
514 return version == 1 || version == 2;
515}
516
517static inline bool xfs_sb_version_has_pquotino(struct xfs_sb *sbp)
518{
519 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
520}
521
522static inline int xfs_sb_version_hasftype(struct xfs_sb *sbp)
523{
524 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
525 xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_FTYPE)) ||
526 (xfs_sb_version_hasmorebits(sbp) &&
527 (sbp->sb_features2 & XFS_SB_VERSION2_FTYPE));
528}
529
530static inline bool xfs_sb_version_hasfinobt(xfs_sb_t *sbp)
531{
532 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
533 (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_FINOBT);
534}
535
536static inline bool xfs_sb_version_hassparseinodes(struct xfs_sb *sbp)
537{
538 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
539 xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_SPINODES);
540}
541
542
543
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545
546
547
548static inline bool xfs_sb_version_hasmetauuid(struct xfs_sb *sbp)
549{
550 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
551 (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_META_UUID);
552}
553
554static inline bool xfs_sb_version_hasrmapbt(struct xfs_sb *sbp)
555{
556 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
557 (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_RMAPBT);
558}
559
560static inline bool xfs_sb_version_hasreflink(struct xfs_sb *sbp)
561{
562 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
563 (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_REFLINK);
564}
565
566
567
568
569
570static inline bool
571xfs_is_quota_inode(struct xfs_sb *sbp, xfs_ino_t ino)
572{
573 return (ino == sbp->sb_uquotino ||
574 ino == sbp->sb_gquotino ||
575 ino == sbp->sb_pquotino);
576}
577
578#define XFS_SB_DADDR ((xfs_daddr_t)0)
579#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
580
581#define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
582#define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \
583 xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d))
584#define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \
585 XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
586
587
588
589
590#define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
591
592
593
594
595#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
596#define XFS_BB_TO_FSB(mp,bb) \
597 (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
598#define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
599
600
601
602
603#define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
604#define XFS_B_TO_FSB(mp,b) \
605 ((((uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
606#define XFS_B_TO_FSBT(mp,b) (((uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
607#define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
608
609
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611
612
613
614
615#define XFS_AGF_MAGIC 0x58414746
616#define XFS_AGI_MAGIC 0x58414749
617#define XFS_AGFL_MAGIC 0x5841464c
618#define XFS_AGF_VERSION 1
619#define XFS_AGI_VERSION 1
620
621#define XFS_AGF_GOOD_VERSION(v) ((v) == XFS_AGF_VERSION)
622#define XFS_AGI_GOOD_VERSION(v) ((v) == XFS_AGI_VERSION)
623
624
625
626
627
628#define XFS_BTNUM_AGF ((int)XFS_BTNUM_RMAPi + 1)
629
630
631
632
633
634
635
636typedef struct xfs_agf {
637
638
639
640 __be32 agf_magicnum;
641 __be32 agf_versionnum;
642 __be32 agf_seqno;
643 __be32 agf_length;
644
645
646
647 __be32 agf_roots[XFS_BTNUM_AGF];
648 __be32 agf_levels[XFS_BTNUM_AGF];
649
650 __be32 agf_flfirst;
651 __be32 agf_fllast;
652 __be32 agf_flcount;
653 __be32 agf_freeblks;
654
655 __be32 agf_longest;
656 __be32 agf_btreeblks;
657 uuid_t agf_uuid;
658
659 __be32 agf_rmap_blocks;
660 __be32 agf_refcount_blocks;
661
662 __be32 agf_refcount_root;
663 __be32 agf_refcount_level;
664
665
666
667
668
669
670 __be64 agf_spare64[14];
671
672
673 __be64 agf_lsn;
674 __be32 agf_crc;
675 __be32 agf_spare2;
676
677
678} xfs_agf_t;
679
680#define XFS_AGF_CRC_OFF offsetof(struct xfs_agf, agf_crc)
681
682#define XFS_AGF_MAGICNUM 0x00000001
683#define XFS_AGF_VERSIONNUM 0x00000002
684#define XFS_AGF_SEQNO 0x00000004
685#define XFS_AGF_LENGTH 0x00000008
686#define XFS_AGF_ROOTS 0x00000010
687#define XFS_AGF_LEVELS 0x00000020
688#define XFS_AGF_FLFIRST 0x00000040
689#define XFS_AGF_FLLAST 0x00000080
690#define XFS_AGF_FLCOUNT 0x00000100
691#define XFS_AGF_FREEBLKS 0x00000200
692#define XFS_AGF_LONGEST 0x00000400
693#define XFS_AGF_BTREEBLKS 0x00000800
694#define XFS_AGF_UUID 0x00001000
695#define XFS_AGF_RMAP_BLOCKS 0x00002000
696#define XFS_AGF_REFCOUNT_BLOCKS 0x00004000
697#define XFS_AGF_REFCOUNT_ROOT 0x00008000
698#define XFS_AGF_REFCOUNT_LEVEL 0x00010000
699#define XFS_AGF_SPARE64 0x00020000
700#define XFS_AGF_NUM_BITS 18
701#define XFS_AGF_ALL_BITS ((1 << XFS_AGF_NUM_BITS) - 1)
702
703#define XFS_AGF_FLAGS \
704 { XFS_AGF_MAGICNUM, "MAGICNUM" }, \
705 { XFS_AGF_VERSIONNUM, "VERSIONNUM" }, \
706 { XFS_AGF_SEQNO, "SEQNO" }, \
707 { XFS_AGF_LENGTH, "LENGTH" }, \
708 { XFS_AGF_ROOTS, "ROOTS" }, \
709 { XFS_AGF_LEVELS, "LEVELS" }, \
710 { XFS_AGF_FLFIRST, "FLFIRST" }, \
711 { XFS_AGF_FLLAST, "FLLAST" }, \
712 { XFS_AGF_FLCOUNT, "FLCOUNT" }, \
713 { XFS_AGF_FREEBLKS, "FREEBLKS" }, \
714 { XFS_AGF_LONGEST, "LONGEST" }, \
715 { XFS_AGF_BTREEBLKS, "BTREEBLKS" }, \
716 { XFS_AGF_UUID, "UUID" }, \
717 { XFS_AGF_RMAP_BLOCKS, "RMAP_BLOCKS" }, \
718 { XFS_AGF_REFCOUNT_BLOCKS, "REFCOUNT_BLOCKS" }, \
719 { XFS_AGF_REFCOUNT_ROOT, "REFCOUNT_ROOT" }, \
720 { XFS_AGF_REFCOUNT_LEVEL, "REFCOUNT_LEVEL" }, \
721 { XFS_AGF_SPARE64, "SPARE64" }
722
723
724#define XFS_AGF_DADDR(mp) ((xfs_daddr_t)(1 << (mp)->m_sectbb_log))
725#define XFS_AGF_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp))
726
727
728
729
730#define XFS_AGI_UNLINKED_BUCKETS 64
731
732typedef struct xfs_agi {
733
734
735
736 __be32 agi_magicnum;
737 __be32 agi_versionnum;
738 __be32 agi_seqno;
739 __be32 agi_length;
740
741
742
743
744
745 __be32 agi_count;
746 __be32 agi_root;
747 __be32 agi_level;
748 __be32 agi_freecount;
749
750 __be32 agi_newino;
751 __be32 agi_dirino;
752
753
754
755
756 __be32 agi_unlinked[XFS_AGI_UNLINKED_BUCKETS];
757
758
759
760 uuid_t agi_uuid;
761 __be32 agi_crc;
762 __be32 agi_pad32;
763 __be64 agi_lsn;
764
765 __be32 agi_free_root;
766 __be32 agi_free_level;
767
768
769} xfs_agi_t;
770
771#define XFS_AGI_CRC_OFF offsetof(struct xfs_agi, agi_crc)
772
773#define XFS_AGI_MAGICNUM (1 << 0)
774#define XFS_AGI_VERSIONNUM (1 << 1)
775#define XFS_AGI_SEQNO (1 << 2)
776#define XFS_AGI_LENGTH (1 << 3)
777#define XFS_AGI_COUNT (1 << 4)
778#define XFS_AGI_ROOT (1 << 5)
779#define XFS_AGI_LEVEL (1 << 6)
780#define XFS_AGI_FREECOUNT (1 << 7)
781#define XFS_AGI_NEWINO (1 << 8)
782#define XFS_AGI_DIRINO (1 << 9)
783#define XFS_AGI_UNLINKED (1 << 10)
784#define XFS_AGI_NUM_BITS_R1 11
785#define XFS_AGI_ALL_BITS_R1 ((1 << XFS_AGI_NUM_BITS_R1) - 1)
786#define XFS_AGI_FREE_ROOT (1 << 11)
787#define XFS_AGI_FREE_LEVEL (1 << 12)
788#define XFS_AGI_NUM_BITS_R2 13
789
790
791#define XFS_AGI_DADDR(mp) ((xfs_daddr_t)(2 << (mp)->m_sectbb_log))
792#define XFS_AGI_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGI_DADDR(mp))
793
794
795
796
797
798#define XFS_AGFL_DADDR(mp) ((xfs_daddr_t)(3 << (mp)->m_sectbb_log))
799#define XFS_AGFL_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGFL_DADDR(mp))
800#define XFS_BUF_TO_AGFL(bp) ((struct xfs_agfl *)((bp)->b_addr))
801
802struct xfs_agfl {
803 __be32 agfl_magicnum;
804 __be32 agfl_seqno;
805 uuid_t agfl_uuid;
806 __be64 agfl_lsn;
807 __be32 agfl_crc;
808} __attribute__((packed));
809
810#define XFS_AGFL_CRC_OFF offsetof(struct xfs_agfl, agfl_crc)
811
812#define XFS_AGB_TO_FSB(mp,agno,agbno) \
813 (((xfs_fsblock_t)(agno) << (mp)->m_sb.sb_agblklog) | (agbno))
814#define XFS_FSB_TO_AGNO(mp,fsbno) \
815 ((xfs_agnumber_t)((fsbno) >> (mp)->m_sb.sb_agblklog))
816#define XFS_FSB_TO_AGBNO(mp,fsbno) \
817 ((xfs_agblock_t)((fsbno) & xfs_mask32lo((mp)->m_sb.sb_agblklog)))
818#define XFS_AGB_TO_DADDR(mp,agno,agbno) \
819 ((xfs_daddr_t)XFS_FSB_TO_BB(mp, \
820 (xfs_fsblock_t)(agno) * (mp)->m_sb.sb_agblocks + (agbno)))
821#define XFS_AG_DADDR(mp,agno,d) (XFS_AGB_TO_DADDR(mp, agno, 0) + (d))
822
823
824
825
826
827#define XFS_AG_CHECK_DADDR(mp,d,len) \
828 ((len) == 1 ? \
829 ASSERT((d) == XFS_SB_DADDR || \
830 xfs_daddr_to_agbno(mp, d) != XFS_SB_DADDR) : \
831 ASSERT(xfs_daddr_to_agno(mp, d) == \
832 xfs_daddr_to_agno(mp, (d) + (len) - 1)))
833
834typedef struct xfs_timestamp {
835 __be32 t_sec;
836 __be32 t_nsec;
837} xfs_timestamp_t;
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856#define XFS_DINODE_MAGIC 0x494e
857typedef struct xfs_dinode {
858 __be16 di_magic;
859 __be16 di_mode;
860 __u8 di_version;
861 __u8 di_format;
862 __be16 di_onlink;
863 __be32 di_uid;
864 __be32 di_gid;
865 __be32 di_nlink;
866 __be16 di_projid_lo;
867 __be16 di_projid_hi;
868 __u8 di_pad[6];
869 __be16 di_flushiter;
870 xfs_timestamp_t di_atime;
871 xfs_timestamp_t di_mtime;
872 xfs_timestamp_t di_ctime;
873 __be64 di_size;
874 __be64 di_nblocks;
875 __be32 di_extsize;
876 __be32 di_nextents;
877 __be16 di_anextents;
878 __u8 di_forkoff;
879 __s8 di_aformat;
880 __be32 di_dmevmask;
881 __be16 di_dmstate;
882 __be16 di_flags;
883 __be32 di_gen;
884
885
886 __be32 di_next_unlinked;
887
888
889 __le32 di_crc;
890 __be64 di_changecount;
891 __be64 di_lsn;
892 __be64 di_flags2;
893 __be32 di_cowextsize;
894 __u8 di_pad2[12];
895
896
897 xfs_timestamp_t di_crtime;
898 __be64 di_ino;
899 uuid_t di_uuid;
900
901
902} xfs_dinode_t;
903
904#define XFS_DINODE_CRC_OFF offsetof(struct xfs_dinode, di_crc)
905
906#define DI_MAX_FLUSH 0xffff
907
908
909
910
911
912static inline uint xfs_dinode_size(int version)
913{
914 if (version == 3)
915 return sizeof(struct xfs_dinode);
916 return offsetof(struct xfs_dinode, di_crc);
917}
918
919
920
921
922
923#define XFS_MAXLINK ((1U << 31) - 1U)
924
925
926
927
928
929
930
931enum xfs_dinode_fmt {
932 XFS_DINODE_FMT_DEV,
933 XFS_DINODE_FMT_LOCAL,
934 XFS_DINODE_FMT_EXTENTS,
935 XFS_DINODE_FMT_BTREE,
936 XFS_DINODE_FMT_UUID
937};
938
939#define XFS_INODE_FORMAT_STR \
940 { XFS_DINODE_FMT_DEV, "dev" }, \
941 { XFS_DINODE_FMT_LOCAL, "local" }, \
942 { XFS_DINODE_FMT_EXTENTS, "extent" }, \
943 { XFS_DINODE_FMT_BTREE, "btree" }, \
944 { XFS_DINODE_FMT_UUID, "uuid" }
945
946
947
948
949#define XFS_DINODE_MIN_LOG 8
950#define XFS_DINODE_MAX_LOG 11
951#define XFS_DINODE_MIN_SIZE (1 << XFS_DINODE_MIN_LOG)
952#define XFS_DINODE_MAX_SIZE (1 << XFS_DINODE_MAX_LOG)
953
954
955
956
957#define XFS_DINODE_SIZE(sbp) \
958 (xfs_sb_version_has_v3inode(sbp) ? \
959 sizeof(struct xfs_dinode) : \
960 offsetof(struct xfs_dinode, di_crc))
961#define XFS_LITINO(mp) \
962 ((mp)->m_sb.sb_inodesize - XFS_DINODE_SIZE(&(mp)->m_sb))
963
964
965
966
967#define XFS_DFORK_BOFF(dip) ((int)((dip)->di_forkoff << 3))
968
969#define XFS_DFORK_DSIZE(dip,mp) \
970 ((dip)->di_forkoff ? XFS_DFORK_BOFF(dip) : XFS_LITINO(mp))
971#define XFS_DFORK_ASIZE(dip,mp) \
972 ((dip)->di_forkoff ? XFS_LITINO(mp) - XFS_DFORK_BOFF(dip) : 0)
973#define XFS_DFORK_SIZE(dip,mp,w) \
974 ((w) == XFS_DATA_FORK ? \
975 XFS_DFORK_DSIZE(dip, mp) : \
976 XFS_DFORK_ASIZE(dip, mp))
977
978#define XFS_DFORK_MAXEXT(dip, mp, w) \
979 (XFS_DFORK_SIZE(dip, mp, w) / sizeof(struct xfs_bmbt_rec))
980
981
982
983
984#define XFS_DFORK_DPTR(dip) \
985 ((char *)dip + xfs_dinode_size(dip->di_version))
986#define XFS_DFORK_APTR(dip) \
987 (XFS_DFORK_DPTR(dip) + XFS_DFORK_BOFF(dip))
988#define XFS_DFORK_PTR(dip,w) \
989 ((w) == XFS_DATA_FORK ? XFS_DFORK_DPTR(dip) : XFS_DFORK_APTR(dip))
990
991#define XFS_DFORK_FORMAT(dip,w) \
992 ((w) == XFS_DATA_FORK ? \
993 (dip)->di_format : \
994 (dip)->di_aformat)
995#define XFS_DFORK_NEXTENTS(dip,w) \
996 ((w) == XFS_DATA_FORK ? \
997 be32_to_cpu((dip)->di_nextents) : \
998 be16_to_cpu((dip)->di_anextents))
999
1000
1001
1002
1003
1004static inline xfs_dev_t xfs_dinode_get_rdev(struct xfs_dinode *dip)
1005{
1006 return be32_to_cpu(*(__be32 *)XFS_DFORK_DPTR(dip));
1007}
1008
1009static inline void xfs_dinode_put_rdev(struct xfs_dinode *dip, xfs_dev_t rdev)
1010{
1011 *(__be32 *)XFS_DFORK_DPTR(dip) = cpu_to_be32(rdev);
1012}
1013
1014
1015
1016
1017#define XFS_DIFLAG_REALTIME_BIT 0
1018#define XFS_DIFLAG_PREALLOC_BIT 1
1019#define XFS_DIFLAG_NEWRTBM_BIT 2
1020#define XFS_DIFLAG_IMMUTABLE_BIT 3
1021#define XFS_DIFLAG_APPEND_BIT 4
1022#define XFS_DIFLAG_SYNC_BIT 5
1023#define XFS_DIFLAG_NOATIME_BIT 6
1024#define XFS_DIFLAG_NODUMP_BIT 7
1025#define XFS_DIFLAG_RTINHERIT_BIT 8
1026#define XFS_DIFLAG_PROJINHERIT_BIT 9
1027#define XFS_DIFLAG_NOSYMLINKS_BIT 10
1028#define XFS_DIFLAG_EXTSIZE_BIT 11
1029#define XFS_DIFLAG_EXTSZINHERIT_BIT 12
1030#define XFS_DIFLAG_NODEFRAG_BIT 13
1031#define XFS_DIFLAG_FILESTREAM_BIT 14
1032
1033
1034#define XFS_DIFLAG_REALTIME (1 << XFS_DIFLAG_REALTIME_BIT)
1035#define XFS_DIFLAG_PREALLOC (1 << XFS_DIFLAG_PREALLOC_BIT)
1036#define XFS_DIFLAG_NEWRTBM (1 << XFS_DIFLAG_NEWRTBM_BIT)
1037#define XFS_DIFLAG_IMMUTABLE (1 << XFS_DIFLAG_IMMUTABLE_BIT)
1038#define XFS_DIFLAG_APPEND (1 << XFS_DIFLAG_APPEND_BIT)
1039#define XFS_DIFLAG_SYNC (1 << XFS_DIFLAG_SYNC_BIT)
1040#define XFS_DIFLAG_NOATIME (1 << XFS_DIFLAG_NOATIME_BIT)
1041#define XFS_DIFLAG_NODUMP (1 << XFS_DIFLAG_NODUMP_BIT)
1042#define XFS_DIFLAG_RTINHERIT (1 << XFS_DIFLAG_RTINHERIT_BIT)
1043#define XFS_DIFLAG_PROJINHERIT (1 << XFS_DIFLAG_PROJINHERIT_BIT)
1044#define XFS_DIFLAG_NOSYMLINKS (1 << XFS_DIFLAG_NOSYMLINKS_BIT)
1045#define XFS_DIFLAG_EXTSIZE (1 << XFS_DIFLAG_EXTSIZE_BIT)
1046#define XFS_DIFLAG_EXTSZINHERIT (1 << XFS_DIFLAG_EXTSZINHERIT_BIT)
1047#define XFS_DIFLAG_NODEFRAG (1 << XFS_DIFLAG_NODEFRAG_BIT)
1048#define XFS_DIFLAG_FILESTREAM (1 << XFS_DIFLAG_FILESTREAM_BIT)
1049
1050#define XFS_DIFLAG_ANY \
1051 (XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \
1052 XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \
1053 XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \
1054 XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS | XFS_DIFLAG_EXTSIZE | \
1055 XFS_DIFLAG_EXTSZINHERIT | XFS_DIFLAG_NODEFRAG | XFS_DIFLAG_FILESTREAM)
1056
1057
1058
1059
1060
1061#define XFS_DIFLAG2_DAX_BIT 0
1062#define XFS_DIFLAG2_REFLINK_BIT 1
1063#define XFS_DIFLAG2_COWEXTSIZE_BIT 2
1064#define XFS_DIFLAG2_DAX (1 << XFS_DIFLAG2_DAX_BIT)
1065#define XFS_DIFLAG2_REFLINK (1 << XFS_DIFLAG2_REFLINK_BIT)
1066#define XFS_DIFLAG2_COWEXTSIZE (1 << XFS_DIFLAG2_COWEXTSIZE_BIT)
1067
1068#define XFS_DIFLAG2_ANY \
1069 (XFS_DIFLAG2_DAX | XFS_DIFLAG2_REFLINK | XFS_DIFLAG2_COWEXTSIZE)
1070
1071
1072
1073
1074
1075
1076
1077
1078#define XFS_INO_MASK(k) (uint32_t)((1ULL << (k)) - 1)
1079#define XFS_INO_OFFSET_BITS(mp) (mp)->m_sb.sb_inopblog
1080#define XFS_INO_AGBNO_BITS(mp) (mp)->m_sb.sb_agblklog
1081#define XFS_INO_AGINO_BITS(mp) ((mp)->m_ino_geo.agino_log)
1082#define XFS_INO_AGNO_BITS(mp) (mp)->m_agno_log
1083#define XFS_INO_BITS(mp) \
1084 XFS_INO_AGNO_BITS(mp) + XFS_INO_AGINO_BITS(mp)
1085#define XFS_INO_TO_AGNO(mp,i) \
1086 ((xfs_agnumber_t)((i) >> XFS_INO_AGINO_BITS(mp)))
1087#define XFS_INO_TO_AGINO(mp,i) \
1088 ((xfs_agino_t)(i) & XFS_INO_MASK(XFS_INO_AGINO_BITS(mp)))
1089#define XFS_INO_TO_AGBNO(mp,i) \
1090 (((xfs_agblock_t)(i) >> XFS_INO_OFFSET_BITS(mp)) & \
1091 XFS_INO_MASK(XFS_INO_AGBNO_BITS(mp)))
1092#define XFS_INO_TO_OFFSET(mp,i) \
1093 ((int)(i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
1094#define XFS_INO_TO_FSB(mp,i) \
1095 XFS_AGB_TO_FSB(mp, XFS_INO_TO_AGNO(mp,i), XFS_INO_TO_AGBNO(mp,i))
1096#define XFS_AGINO_TO_INO(mp,a,i) \
1097 (((xfs_ino_t)(a) << XFS_INO_AGINO_BITS(mp)) | (i))
1098#define XFS_AGINO_TO_AGBNO(mp,i) ((i) >> XFS_INO_OFFSET_BITS(mp))
1099#define XFS_AGINO_TO_OFFSET(mp,i) \
1100 ((i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
1101#define XFS_OFFBNO_TO_AGINO(mp,b,o) \
1102 ((xfs_agino_t)(((b) << XFS_INO_OFFSET_BITS(mp)) | (o)))
1103#define XFS_FSB_TO_INO(mp, b) ((xfs_ino_t)((b) << XFS_INO_OFFSET_BITS(mp)))
1104#define XFS_AGB_TO_AGINO(mp, b) ((xfs_agino_t)((b) << XFS_INO_OFFSET_BITS(mp)))
1105
1106#define XFS_MAXINUMBER ((xfs_ino_t)((1ULL << 56) - 1ULL))
1107#define XFS_MAXINUMBER_32 ((xfs_ino_t)((1ULL << 32) - 1ULL))
1108
1109
1110
1111
1112
1113
1114#define XFS_MAX_RTEXTSIZE (1024 * 1024 * 1024)
1115#define XFS_DFL_RTEXTSIZE (64 * 1024)
1116#define XFS_MIN_RTEXTSIZE (4 * 1024)
1117
1118#define XFS_BLOCKSIZE(mp) ((mp)->m_sb.sb_blocksize)
1119#define XFS_BLOCKMASK(mp) ((mp)->m_blockmask)
1120#define XFS_BLOCKWSIZE(mp) ((mp)->m_blockwsize)
1121#define XFS_BLOCKWMASK(mp) ((mp)->m_blockwmask)
1122
1123
1124
1125
1126#define XFS_SUMOFFS(mp,ls,bb) ((int)((ls) * (mp)->m_sb.sb_rbmblocks + (bb)))
1127#define XFS_SUMOFFSTOBLOCK(mp,s) \
1128 (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog)
1129#define XFS_SUMPTR(mp,bp,so) \
1130 ((xfs_suminfo_t *)((bp)->b_addr + \
1131 (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp))))
1132
1133#define XFS_BITTOBLOCK(mp,bi) ((bi) >> (mp)->m_blkbit_log)
1134#define XFS_BLOCKTOBIT(mp,bb) ((bb) << (mp)->m_blkbit_log)
1135#define XFS_BITTOWORD(mp,bi) \
1136 ((int)(((bi) >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp)))
1137
1138#define XFS_RTMIN(a,b) ((a) < (b) ? (a) : (b))
1139#define XFS_RTMAX(a,b) ((a) > (b) ? (a) : (b))
1140
1141#define XFS_RTLOBIT(w) xfs_lowbit32(w)
1142#define XFS_RTHIBIT(w) xfs_highbit32(w)
1143
1144#define XFS_RTBLOCKLOG(b) xfs_highbit64(b)
1145
1146
1147
1148
1149#define XFS_DQUOT_MAGIC 0x4451
1150#define XFS_DQUOT_VERSION (uint8_t)0x01
1151
1152#define XFS_DQTYPE_USER 0x01
1153#define XFS_DQTYPE_PROJ 0x02
1154#define XFS_DQTYPE_GROUP 0x04
1155
1156
1157#define XFS_DQTYPE_REC_MASK (XFS_DQTYPE_USER | \
1158 XFS_DQTYPE_PROJ | \
1159 XFS_DQTYPE_GROUP)
1160
1161#define XFS_DQTYPE_ANY (XFS_DQTYPE_REC_MASK)
1162
1163
1164
1165
1166
1167
1168struct xfs_disk_dquot {
1169 __be16 d_magic;
1170 __u8 d_version;
1171 __u8 d_type;
1172 __be32 d_id;
1173 __be64 d_blk_hardlimit;
1174 __be64 d_blk_softlimit;
1175 __be64 d_ino_hardlimit;
1176 __be64 d_ino_softlimit;
1177 __be64 d_bcount;
1178 __be64 d_icount;
1179 __be32 d_itimer;
1180
1181 __be32 d_btimer;
1182 __be16 d_iwarns;
1183 __be16 d_bwarns;
1184 __be32 d_pad0;
1185 __be64 d_rtb_hardlimit;
1186 __be64 d_rtb_softlimit;
1187 __be64 d_rtbcount;
1188 __be32 d_rtbtimer;
1189 __be16 d_rtbwarns;
1190 __be16 d_pad;
1191};
1192
1193
1194
1195
1196
1197typedef struct xfs_dqblk {
1198 struct xfs_disk_dquot dd_diskdq;
1199 char dd_fill[4];
1200
1201
1202
1203
1204 __be32 dd_crc;
1205 __be64 dd_lsn;
1206 uuid_t dd_uuid;
1207} xfs_dqblk_t;
1208
1209#define XFS_DQUOT_CRC_OFF offsetof(struct xfs_dqblk, dd_crc)
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
1226
1227
1228
1229
1230#define XFS_SYMLINK_MAGIC 0x58534c4d
1231
1232struct xfs_dsymlink_hdr {
1233 __be32 sl_magic;
1234 __be32 sl_offset;
1235 __be32 sl_bytes;
1236 __be32 sl_crc;
1237 uuid_t sl_uuid;
1238 __be64 sl_owner;
1239 __be64 sl_blkno;
1240 __be64 sl_lsn;
1241};
1242
1243#define XFS_SYMLINK_CRC_OFF offsetof(struct xfs_dsymlink_hdr, sl_crc)
1244
1245#define XFS_SYMLINK_MAXLEN 1024
1246
1247
1248
1249
1250
1251#define XFS_SYMLINK_MAPS 3
1252
1253#define XFS_SYMLINK_BUF_SPACE(mp, bufsize) \
1254 ((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \
1255 sizeof(struct xfs_dsymlink_hdr) : 0))
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265#define XFS_ABTB_MAGIC 0x41425442
1266#define XFS_ABTB_CRC_MAGIC 0x41423342
1267#define XFS_ABTC_MAGIC 0x41425443
1268#define XFS_ABTC_CRC_MAGIC 0x41423343
1269
1270
1271
1272
1273typedef struct xfs_alloc_rec {
1274 __be32 ar_startblock;
1275 __be32 ar_blockcount;
1276} xfs_alloc_rec_t, xfs_alloc_key_t;
1277
1278typedef struct xfs_alloc_rec_incore {
1279 xfs_agblock_t ar_startblock;
1280 xfs_extlen_t ar_blockcount;
1281} xfs_alloc_rec_incore_t;
1282
1283
1284typedef __be32 xfs_alloc_ptr_t;
1285
1286
1287
1288
1289
1290#define XFS_BNO_BLOCK(mp) ((xfs_agblock_t)(XFS_AGFL_BLOCK(mp) + 1))
1291#define XFS_CNT_BLOCK(mp) ((xfs_agblock_t)(XFS_BNO_BLOCK(mp) + 1))
1292
1293
1294
1295
1296
1297
1298
1299#define XFS_IBT_MAGIC 0x49414254
1300#define XFS_IBT_CRC_MAGIC 0x49414233
1301#define XFS_FIBT_MAGIC 0x46494254
1302#define XFS_FIBT_CRC_MAGIC 0x46494233
1303
1304typedef uint64_t xfs_inofree_t;
1305#define XFS_INODES_PER_CHUNK (NBBY * sizeof(xfs_inofree_t))
1306#define XFS_INODES_PER_CHUNK_LOG (XFS_NBBYLOG + 3)
1307#define XFS_INOBT_ALL_FREE ((xfs_inofree_t)-1)
1308#define XFS_INOBT_MASK(i) ((xfs_inofree_t)1 << (i))
1309
1310#define XFS_INOBT_HOLEMASK_FULL 0
1311#define XFS_INOBT_HOLEMASK_BITS (NBBY * sizeof(uint16_t))
1312#define XFS_INODES_PER_HOLEMASK_BIT \
1313 (XFS_INODES_PER_CHUNK / (NBBY * sizeof(uint16_t)))
1314
1315static inline xfs_inofree_t xfs_inobt_maskn(int i, int n)
1316{
1317 return ((n >= XFS_INODES_PER_CHUNK ? 0 : XFS_INOBT_MASK(n)) - 1) << i;
1318}
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330typedef struct xfs_inobt_rec {
1331 __be32 ir_startino;
1332 union {
1333 struct {
1334 __be32 ir_freecount;
1335 } f;
1336 struct {
1337 __be16 ir_holemask;
1338 __u8 ir_count;
1339 __u8 ir_freecount;
1340 } sp;
1341 } ir_u;
1342 __be64 ir_free;
1343} xfs_inobt_rec_t;
1344
1345typedef struct xfs_inobt_rec_incore {
1346 xfs_agino_t ir_startino;
1347 uint16_t ir_holemask;
1348 uint8_t ir_count;
1349 uint8_t ir_freecount;
1350 xfs_inofree_t ir_free;
1351} xfs_inobt_rec_incore_t;
1352
1353static inline bool xfs_inobt_issparse(uint16_t holemask)
1354{
1355
1356 return holemask;
1357}
1358
1359
1360
1361
1362typedef struct xfs_inobt_key {
1363 __be32 ir_startino;
1364} xfs_inobt_key_t;
1365
1366
1367typedef __be32 xfs_inobt_ptr_t;
1368
1369
1370
1371
1372#define XFS_IBT_BLOCK(mp) ((xfs_agblock_t)(XFS_CNT_BLOCK(mp) + 1))
1373#define XFS_FIBT_BLOCK(mp) ((xfs_agblock_t)(XFS_IBT_BLOCK(mp) + 1))
1374
1375
1376
1377
1378
1379
1380#define XFS_RMAP_CRC_MAGIC 0x524d4233
1381
1382
1383
1384
1385
1386#define XFS_OWNER_INFO_ATTR_FORK (1 << 0)
1387#define XFS_OWNER_INFO_BMBT_BLOCK (1 << 1)
1388struct xfs_owner_info {
1389 uint64_t oi_owner;
1390 xfs_fileoff_t oi_offset;
1391 unsigned int oi_flags;
1392};
1393
1394
1395
1396
1397
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1399
1400
1401#define XFS_RMAP_OWN_NULL (-1ULL)
1402#define XFS_RMAP_OWN_UNKNOWN (-2ULL)
1403#define XFS_RMAP_OWN_FS (-3ULL)
1404#define XFS_RMAP_OWN_LOG (-4ULL)
1405#define XFS_RMAP_OWN_AG (-5ULL)
1406#define XFS_RMAP_OWN_INOBT (-6ULL)
1407#define XFS_RMAP_OWN_INODES (-7ULL)
1408#define XFS_RMAP_OWN_REFC (-8ULL)
1409#define XFS_RMAP_OWN_COW (-9ULL)
1410#define XFS_RMAP_OWN_MIN (-10ULL)
1411
1412#define XFS_RMAP_NON_INODE_OWNER(owner) (!!((owner) & (1ULL << 63)))
1413
1414
1415
1416
1417struct xfs_rmap_rec {
1418 __be32 rm_startblock;
1419 __be32 rm_blockcount;
1420 __be64 rm_owner;
1421 __be64 rm_offset;
1422};
1423
1424
1425
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1430
1431
1432#define XFS_RMAP_OFF_ATTR_FORK ((uint64_t)1ULL << 63)
1433#define XFS_RMAP_OFF_BMBT_BLOCK ((uint64_t)1ULL << 62)
1434#define XFS_RMAP_OFF_UNWRITTEN ((uint64_t)1ULL << 61)
1435
1436#define XFS_RMAP_LEN_MAX ((uint32_t)~0U)
1437#define XFS_RMAP_OFF_FLAGS (XFS_RMAP_OFF_ATTR_FORK | \
1438 XFS_RMAP_OFF_BMBT_BLOCK | \
1439 XFS_RMAP_OFF_UNWRITTEN)
1440#define XFS_RMAP_OFF_MASK ((uint64_t)0x3FFFFFFFFFFFFFULL)
1441
1442#define XFS_RMAP_OFF(off) ((off) & XFS_RMAP_OFF_MASK)
1443
1444#define XFS_RMAP_IS_BMBT_BLOCK(off) (!!((off) & XFS_RMAP_OFF_BMBT_BLOCK))
1445#define XFS_RMAP_IS_ATTR_FORK(off) (!!((off) & XFS_RMAP_OFF_ATTR_FORK))
1446#define XFS_RMAP_IS_UNWRITTEN(len) (!!((off) & XFS_RMAP_OFF_UNWRITTEN))
1447
1448#define RMAPBT_STARTBLOCK_BITLEN 32
1449#define RMAPBT_BLOCKCOUNT_BITLEN 32
1450#define RMAPBT_OWNER_BITLEN 64
1451#define RMAPBT_ATTRFLAG_BITLEN 1
1452#define RMAPBT_BMBTFLAG_BITLEN 1
1453#define RMAPBT_EXNTFLAG_BITLEN 1
1454#define RMAPBT_UNUSED_OFFSET_BITLEN 7
1455#define RMAPBT_OFFSET_BITLEN 54
1456
1457#define XFS_RMAP_ATTR_FORK (1 << 0)
1458#define XFS_RMAP_BMBT_BLOCK (1 << 1)
1459#define XFS_RMAP_UNWRITTEN (1 << 2)
1460#define XFS_RMAP_KEY_FLAGS (XFS_RMAP_ATTR_FORK | \
1461 XFS_RMAP_BMBT_BLOCK)
1462#define XFS_RMAP_REC_FLAGS (XFS_RMAP_UNWRITTEN)
1463struct xfs_rmap_irec {
1464 xfs_agblock_t rm_startblock;
1465 xfs_extlen_t rm_blockcount;
1466 uint64_t rm_owner;
1467 uint64_t rm_offset;
1468 unsigned int rm_flags;
1469};
1470
1471
1472
1473
1474
1475
1476struct xfs_rmap_key {
1477 __be32 rm_startblock;
1478 __be64 rm_owner;
1479 __be64 rm_offset;
1480} __attribute__((packed));
1481
1482
1483typedef __be32 xfs_rmap_ptr_t;
1484
1485#define XFS_RMAP_BLOCK(mp) \
1486 (xfs_sb_version_hasfinobt(&((mp)->m_sb)) ? \
1487 XFS_FIBT_BLOCK(mp) + 1 : \
1488 XFS_IBT_BLOCK(mp) + 1)
1489
1490
1491
1492
1493
1494#define XFS_REFC_CRC_MAGIC 0x52334643
1495
1496unsigned int xfs_refc_block(struct xfs_mount *mp);
1497
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1517
1518
1519#define XFS_REFC_COW_START ((xfs_agblock_t)(1U << 31))
1520#define REFCNTBT_COWFLAG_BITLEN 1
1521#define REFCNTBT_AGBLOCK_BITLEN 31
1522
1523struct xfs_refcount_rec {
1524 __be32 rc_startblock;
1525 __be32 rc_blockcount;
1526 __be32 rc_refcount;
1527};
1528
1529struct xfs_refcount_key {
1530 __be32 rc_startblock;
1531};
1532
1533struct xfs_refcount_irec {
1534 xfs_agblock_t rc_startblock;
1535 xfs_extlen_t rc_blockcount;
1536 xfs_nlink_t rc_refcount;
1537};
1538
1539#define MAXREFCOUNT ((xfs_nlink_t)~0U)
1540#define MAXREFCEXTLEN ((xfs_extlen_t)~0U)
1541
1542
1543typedef __be32 xfs_refcount_ptr_t;
1544
1545
1546
1547
1548
1549
1550
1551
1552#define XFS_BMAP_MAGIC 0x424d4150
1553#define XFS_BMAP_CRC_MAGIC 0x424d4133
1554
1555
1556
1557
1558typedef struct xfs_bmdr_block {
1559 __be16 bb_level;
1560 __be16 bb_numrecs;
1561} xfs_bmdr_block_t;
1562
1563
1564
1565
1566
1567
1568
1569
1570#define BMBT_EXNTFLAG_BITLEN 1
1571#define BMBT_STARTOFF_BITLEN 54
1572#define BMBT_STARTBLOCK_BITLEN 52
1573#define BMBT_BLOCKCOUNT_BITLEN 21
1574
1575#define BMBT_STARTOFF_MASK ((1ULL << BMBT_STARTOFF_BITLEN) - 1)
1576#define BMBT_BLOCKCOUNT_MASK ((1ULL << BMBT_BLOCKCOUNT_BITLEN) - 1)
1577
1578
1579
1580
1581
1582#define XFS_MAX_FILEOFF (BMBT_STARTOFF_MASK + BMBT_BLOCKCOUNT_MASK)
1583
1584typedef struct xfs_bmbt_rec {
1585 __be64 l0, l1;
1586} xfs_bmbt_rec_t;
1587
1588typedef uint64_t xfs_bmbt_rec_base_t;
1589typedef xfs_bmbt_rec_t xfs_bmdr_rec_t;
1590
1591
1592
1593
1594#define STARTBLOCKVALBITS 17
1595#define STARTBLOCKMASKBITS (15 + 20)
1596#define STARTBLOCKMASK \
1597 (((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
1598
1599static inline int isnullstartblock(xfs_fsblock_t x)
1600{
1601 return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK;
1602}
1603
1604static inline xfs_fsblock_t nullstartblock(int k)
1605{
1606 ASSERT(k < (1 << STARTBLOCKVALBITS));
1607 return STARTBLOCKMASK | (k);
1608}
1609
1610static inline xfs_filblks_t startblockval(xfs_fsblock_t x)
1611{
1612 return (xfs_filblks_t)((x) & ~STARTBLOCKMASK);
1613}
1614
1615
1616
1617
1618typedef struct xfs_bmbt_key {
1619 __be64 br_startoff;
1620} xfs_bmbt_key_t, xfs_bmdr_key_t;
1621
1622
1623typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t;
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641struct xfs_btree_block_shdr {
1642 __be32 bb_leftsib;
1643 __be32 bb_rightsib;
1644
1645 __be64 bb_blkno;
1646 __be64 bb_lsn;
1647 uuid_t bb_uuid;
1648 __be32 bb_owner;
1649 __le32 bb_crc;
1650};
1651
1652
1653struct xfs_btree_block_lhdr {
1654 __be64 bb_leftsib;
1655 __be64 bb_rightsib;
1656
1657 __be64 bb_blkno;
1658 __be64 bb_lsn;
1659 uuid_t bb_uuid;
1660 __be64 bb_owner;
1661 __le32 bb_crc;
1662 __be32 bb_pad;
1663};
1664
1665struct xfs_btree_block {
1666 __be32 bb_magic;
1667 __be16 bb_level;
1668 __be16 bb_numrecs;
1669 union {
1670 struct xfs_btree_block_shdr s;
1671 struct xfs_btree_block_lhdr l;
1672 } bb_u;
1673};
1674
1675
1676#define XFS_BTREE_SBLOCK_LEN \
1677 (offsetof(struct xfs_btree_block, bb_u) + \
1678 offsetof(struct xfs_btree_block_shdr, bb_blkno))
1679
1680#define XFS_BTREE_LBLOCK_LEN \
1681 (offsetof(struct xfs_btree_block, bb_u) + \
1682 offsetof(struct xfs_btree_block_lhdr, bb_blkno))
1683
1684
1685#define XFS_BTREE_SBLOCK_CRC_LEN \
1686 (offsetof(struct xfs_btree_block, bb_u) + \
1687 sizeof(struct xfs_btree_block_shdr))
1688#define XFS_BTREE_LBLOCK_CRC_LEN \
1689 (offsetof(struct xfs_btree_block, bb_u) + \
1690 sizeof(struct xfs_btree_block_lhdr))
1691
1692#define XFS_BTREE_SBLOCK_CRC_OFF \
1693 offsetof(struct xfs_btree_block, bb_u.s.bb_crc)
1694#define XFS_BTREE_LBLOCK_CRC_OFF \
1695 offsetof(struct xfs_btree_block, bb_u.l.bb_crc)
1696
1697
1698
1699
1700struct xfs_acl_entry {
1701 __be32 ae_tag;
1702 __be32 ae_id;
1703 __be16 ae_perm;
1704 __be16 ae_pad;
1705};
1706
1707struct xfs_acl {
1708 __be32 acl_cnt;
1709 struct xfs_acl_entry acl_entry[];
1710};
1711
1712
1713
1714
1715
1716
1717#define XFS_ACL_MAX_ENTRIES(mp) \
1718 (xfs_sb_version_hascrc(&mp->m_sb) \
1719 ? (XFS_XATTR_SIZE_MAX - sizeof(struct xfs_acl)) / \
1720 sizeof(struct xfs_acl_entry) \
1721 : 25)
1722
1723#define XFS_ACL_SIZE(cnt) \
1724 (sizeof(struct xfs_acl) + \
1725 sizeof(struct xfs_acl_entry) * cnt)
1726
1727#define XFS_ACL_MAX_SIZE(mp) \
1728 XFS_ACL_SIZE(XFS_ACL_MAX_ENTRIES((mp)))
1729
1730
1731
1732#define SGI_ACL_FILE "SGI_ACL_FILE"
1733#define SGI_ACL_DEFAULT "SGI_ACL_DEFAULT"
1734#define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
1735#define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
1736
1737#endif
1738