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18#ifndef __XFS_FORMAT_H__
19#define __XFS_FORMAT_H__
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29
30struct xfs_mount;
31struct xfs_trans;
32struct xfs_inode;
33struct xfs_buf;
34struct xfs_ifork;
35
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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
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65
66
67
68#define XFS_XATTR_SIZE_MAX (1 << 16)
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74
75#define XFS_SB_VERSION_OKBITS \
76 ((XFS_SB_VERSION_NUMBITS | XFS_SB_VERSION_ALLFBITS) & \
77 ~XFS_SB_VERSION_SHAREDBIT)
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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)
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104
105typedef struct xfs_sb {
106 uint32_t sb_magicnum;
107 uint32_t sb_blocksize;
108 xfs_rfsblock_t sb_dblocks;
109 xfs_rfsblock_t sb_rblocks;
110 xfs_rtblock_t sb_rextents;
111 uuid_t sb_uuid;
112 xfs_fsblock_t sb_logstart;
113 xfs_ino_t sb_rootino;
114 xfs_ino_t sb_rbmino;
115 xfs_ino_t sb_rsumino;
116 xfs_agblock_t sb_rextsize;
117 xfs_agblock_t sb_agblocks;
118 xfs_agnumber_t sb_agcount;
119 xfs_extlen_t sb_rbmblocks;
120 xfs_extlen_t sb_logblocks;
121 uint16_t sb_versionnum;
122 uint16_t sb_sectsize;
123 uint16_t sb_inodesize;
124 uint16_t sb_inopblock;
125 char sb_fname[12];
126 uint8_t sb_blocklog;
127 uint8_t sb_sectlog;
128 uint8_t sb_inodelog;
129 uint8_t sb_inopblog;
130 uint8_t sb_agblklog;
131 uint8_t sb_rextslog;
132 uint8_t sb_inprogress;
133 uint8_t sb_imax_pct;
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139
140 uint64_t sb_icount;
141 uint64_t sb_ifree;
142 uint64_t sb_fdblocks;
143 uint64_t sb_frextents;
144
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146
147 xfs_ino_t sb_uquotino;
148 xfs_ino_t sb_gquotino;
149 uint16_t sb_qflags;
150 uint8_t sb_flags;
151 uint8_t sb_shared_vn;
152 xfs_extlen_t sb_inoalignmt;
153 uint32_t sb_unit;
154 uint32_t sb_width;
155 uint8_t sb_dirblklog;
156 uint8_t sb_logsectlog;
157 uint16_t sb_logsectsize;
158 uint32_t sb_logsunit;
159 uint32_t sb_features2;
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169
170 uint32_t sb_bad_features2;
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174
175 uint32_t sb_features_compat;
176 uint32_t sb_features_ro_compat;
177 uint32_t sb_features_incompat;
178 uint32_t sb_features_log_incompat;
179
180 uint32_t sb_crc;
181 xfs_extlen_t sb_spino_align;
182
183 xfs_ino_t sb_pquotino;
184 xfs_lsn_t sb_lsn;
185 uuid_t sb_meta_uuid;
186
187
188} xfs_sb_t;
189
190#define XFS_SB_CRC_OFF offsetof(struct xfs_sb, sb_crc)
191
192
193
194
195
196typedef struct xfs_dsb {
197 __be32 sb_magicnum;
198 __be32 sb_blocksize;
199 __be64 sb_dblocks;
200 __be64 sb_rblocks;
201 __be64 sb_rextents;
202 uuid_t sb_uuid;
203 __be64 sb_logstart;
204 __be64 sb_rootino;
205 __be64 sb_rbmino;
206 __be64 sb_rsumino;
207 __be32 sb_rextsize;
208 __be32 sb_agblocks;
209 __be32 sb_agcount;
210 __be32 sb_rbmblocks;
211 __be32 sb_logblocks;
212 __be16 sb_versionnum;
213 __be16 sb_sectsize;
214 __be16 sb_inodesize;
215 __be16 sb_inopblock;
216 char sb_fname[12];
217 __u8 sb_blocklog;
218 __u8 sb_sectlog;
219 __u8 sb_inodelog;
220 __u8 sb_inopblog;
221 __u8 sb_agblklog;
222 __u8 sb_rextslog;
223 __u8 sb_inprogress;
224 __u8 sb_imax_pct;
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230
231 __be64 sb_icount;
232 __be64 sb_ifree;
233 __be64 sb_fdblocks;
234 __be64 sb_frextents;
235
236
237
238 __be64 sb_uquotino;
239 __be64 sb_gquotino;
240 __be16 sb_qflags;
241 __u8 sb_flags;
242 __u8 sb_shared_vn;
243 __be32 sb_inoalignmt;
244 __be32 sb_unit;
245 __be32 sb_width;
246 __u8 sb_dirblklog;
247 __u8 sb_logsectlog;
248 __be16 sb_logsectsize;
249 __be32 sb_logsunit;
250 __be32 sb_features2;
251
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256
257 __be32 sb_bad_features2;
258
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260
261
262 __be32 sb_features_compat;
263 __be32 sb_features_ro_compat;
264 __be32 sb_features_incompat;
265 __be32 sb_features_log_incompat;
266
267 __le32 sb_crc;
268 __be32 sb_spino_align;
269
270 __be64 sb_pquotino;
271 __be64 sb_lsn;
272 uuid_t sb_meta_uuid;
273
274
275} xfs_dsb_t;
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281
282#define XFS_SBF_NOFLAGS 0x00
283#define XFS_SBF_READONLY 0x01
284
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286
287
288#define XFS_SB_MAX_SHARED_VN 0
289
290#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
291
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293
294
295static inline bool xfs_sb_good_v4_features(struct xfs_sb *sbp)
296{
297 if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT))
298 return false;
299
300
301 if ((sbp->sb_versionnum & ~XFS_SB_VERSION_OKBITS) ||
302 ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) &&
303 (sbp->sb_features2 & ~XFS_SB_VERSION2_OKBITS)))
304 return false;
305
306 return true;
307}
308
309static inline bool xfs_sb_good_version(struct xfs_sb *sbp)
310{
311 if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5)
312 return true;
313 if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4)
314 return xfs_sb_good_v4_features(sbp);
315 return false;
316}
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320
321
322static inline bool xfs_sb_has_mismatched_features2(struct xfs_sb *sbp)
323{
324 return sbp->sb_bad_features2 != sbp->sb_features2;
325}
326
327static inline bool xfs_sb_version_hasattr(struct xfs_sb *sbp)
328{
329 return (sbp->sb_versionnum & XFS_SB_VERSION_ATTRBIT);
330}
331
332static inline void xfs_sb_version_addattr(struct xfs_sb *sbp)
333{
334 sbp->sb_versionnum |= XFS_SB_VERSION_ATTRBIT;
335}
336
337static inline bool xfs_sb_version_hasquota(struct xfs_sb *sbp)
338{
339 return (sbp->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
340}
341
342static inline void xfs_sb_version_addquota(struct xfs_sb *sbp)
343{
344 sbp->sb_versionnum |= XFS_SB_VERSION_QUOTABIT;
345}
346
347static inline bool xfs_sb_version_hasalign(struct xfs_sb *sbp)
348{
349 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
350 (sbp->sb_versionnum & XFS_SB_VERSION_ALIGNBIT));
351}
352
353static inline bool xfs_sb_version_hasdalign(struct xfs_sb *sbp)
354{
355 return (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
356}
357
358static inline bool xfs_sb_version_haslogv2(struct xfs_sb *sbp)
359{
360 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
361 (sbp->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
362}
363
364static inline bool xfs_sb_version_hasextflgbit(struct xfs_sb *sbp)
365{
366 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
367 (sbp->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
368}
369
370static inline bool xfs_sb_version_hassector(struct xfs_sb *sbp)
371{
372 return (sbp->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
373}
374
375static inline bool xfs_sb_version_hasasciici(struct xfs_sb *sbp)
376{
377 return (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT);
378}
379
380static inline bool xfs_sb_version_hasmorebits(struct xfs_sb *sbp)
381{
382 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
383 (sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
384}
385
386
387
388
389static inline bool xfs_sb_version_haslazysbcount(struct xfs_sb *sbp)
390{
391 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
392 (xfs_sb_version_hasmorebits(sbp) &&
393 (sbp->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT));
394}
395
396static inline bool xfs_sb_version_hasattr2(struct xfs_sb *sbp)
397{
398 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
399 (xfs_sb_version_hasmorebits(sbp) &&
400 (sbp->sb_features2 & XFS_SB_VERSION2_ATTR2BIT));
401}
402
403static inline void xfs_sb_version_addattr2(struct xfs_sb *sbp)
404{
405 sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
406 sbp->sb_features2 |= XFS_SB_VERSION2_ATTR2BIT;
407}
408
409static inline void xfs_sb_version_removeattr2(struct xfs_sb *sbp)
410{
411 sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT;
412 if (!sbp->sb_features2)
413 sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT;
414}
415
416static inline bool xfs_sb_version_hasprojid32bit(struct xfs_sb *sbp)
417{
418 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) ||
419 (xfs_sb_version_hasmorebits(sbp) &&
420 (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT));
421}
422
423static inline void xfs_sb_version_addprojid32bit(struct xfs_sb *sbp)
424{
425 sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
426 sbp->sb_features2 |= XFS_SB_VERSION2_PROJID32BIT;
427}
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446
447#define XFS_SB_FEAT_COMPAT_ALL 0
448#define XFS_SB_FEAT_COMPAT_UNKNOWN ~XFS_SB_FEAT_COMPAT_ALL
449static inline bool
450xfs_sb_has_compat_feature(
451 struct xfs_sb *sbp,
452 uint32_t feature)
453{
454 return (sbp->sb_features_compat & feature) != 0;
455}
456
457#define XFS_SB_FEAT_RO_COMPAT_FINOBT (1 << 0)
458#define XFS_SB_FEAT_RO_COMPAT_RMAPBT (1 << 1)
459#define XFS_SB_FEAT_RO_COMPAT_REFLINK (1 << 2)
460#define XFS_SB_FEAT_RO_COMPAT_ALL \
461 (XFS_SB_FEAT_RO_COMPAT_FINOBT | \
462 XFS_SB_FEAT_RO_COMPAT_RMAPBT | \
463 XFS_SB_FEAT_RO_COMPAT_REFLINK)
464#define XFS_SB_FEAT_RO_COMPAT_UNKNOWN ~XFS_SB_FEAT_RO_COMPAT_ALL
465static inline bool
466xfs_sb_has_ro_compat_feature(
467 struct xfs_sb *sbp,
468 uint32_t feature)
469{
470 return (sbp->sb_features_ro_compat & feature) != 0;
471}
472
473#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0)
474#define XFS_SB_FEAT_INCOMPAT_SPINODES (1 << 1)
475#define XFS_SB_FEAT_INCOMPAT_META_UUID (1 << 2)
476#define XFS_SB_FEAT_INCOMPAT_ALL \
477 (XFS_SB_FEAT_INCOMPAT_FTYPE| \
478 XFS_SB_FEAT_INCOMPAT_SPINODES| \
479 XFS_SB_FEAT_INCOMPAT_META_UUID)
480
481#define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL
482static inline bool
483xfs_sb_has_incompat_feature(
484 struct xfs_sb *sbp,
485 uint32_t feature)
486{
487 return (sbp->sb_features_incompat & feature) != 0;
488}
489
490#define XFS_SB_FEAT_INCOMPAT_LOG_ALL 0
491#define XFS_SB_FEAT_INCOMPAT_LOG_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_LOG_ALL
492static inline bool
493xfs_sb_has_incompat_log_feature(
494 struct xfs_sb *sbp,
495 uint32_t feature)
496{
497 return (sbp->sb_features_log_incompat & feature) != 0;
498}
499
500
501
502
503static inline int xfs_sb_version_hascrc(struct xfs_sb *sbp)
504{
505 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
506}
507
508static inline int xfs_sb_version_has_pquotino(struct xfs_sb *sbp)
509{
510 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
511}
512
513static inline int xfs_sb_version_hasftype(struct xfs_sb *sbp)
514{
515 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
516 xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_FTYPE)) ||
517 (xfs_sb_version_hasmorebits(sbp) &&
518 (sbp->sb_features2 & XFS_SB_VERSION2_FTYPE));
519}
520
521static inline int xfs_sb_version_hasfinobt(xfs_sb_t *sbp)
522{
523 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
524 (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_FINOBT);
525}
526
527static inline bool xfs_sb_version_hassparseinodes(struct xfs_sb *sbp)
528{
529 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
530 xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_SPINODES);
531}
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537
538
539static inline bool xfs_sb_version_hasmetauuid(struct xfs_sb *sbp)
540{
541 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
542 (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_META_UUID);
543}
544
545static inline bool xfs_sb_version_hasrmapbt(struct xfs_sb *sbp)
546{
547 return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
548 (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_RMAPBT);
549}
550
551static inline bool xfs_sb_version_hasreflink(struct xfs_sb *sbp)
552{
553 return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
554 (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_REFLINK);
555}
556
557
558
559
560
561static inline bool
562xfs_is_quota_inode(struct xfs_sb *sbp, xfs_ino_t ino)
563{
564 return (ino == sbp->sb_uquotino ||
565 ino == sbp->sb_gquotino ||
566 ino == sbp->sb_pquotino);
567}
568
569#define XFS_SB_DADDR ((xfs_daddr_t)0)
570#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
571#define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)((bp)->b_addr))
572
573#define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
574#define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \
575 xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d))
576#define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \
577 XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
578
579
580
581
582#define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
583
584
585
586
587#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
588#define XFS_BB_TO_FSB(mp,bb) \
589 (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
590#define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
591
592
593
594
595#define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
596#define XFS_B_TO_FSB(mp,b) \
597 ((((uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
598#define XFS_B_TO_FSBT(mp,b) (((uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
599#define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
600
601
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604
605
606
607#define XFS_AGF_MAGIC 0x58414746
608#define XFS_AGI_MAGIC 0x58414749
609#define XFS_AGFL_MAGIC 0x5841464c
610#define XFS_AGF_VERSION 1
611#define XFS_AGI_VERSION 1
612
613#define XFS_AGF_GOOD_VERSION(v) ((v) == XFS_AGF_VERSION)
614#define XFS_AGI_GOOD_VERSION(v) ((v) == XFS_AGI_VERSION)
615
616
617
618
619
620#define XFS_BTNUM_AGF ((int)XFS_BTNUM_RMAPi + 1)
621
622
623
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625
626
627
628typedef struct xfs_agf {
629
630
631
632 __be32 agf_magicnum;
633 __be32 agf_versionnum;
634 __be32 agf_seqno;
635 __be32 agf_length;
636
637
638
639 __be32 agf_roots[XFS_BTNUM_AGF];
640 __be32 agf_levels[XFS_BTNUM_AGF];
641
642 __be32 agf_flfirst;
643 __be32 agf_fllast;
644 __be32 agf_flcount;
645 __be32 agf_freeblks;
646
647 __be32 agf_longest;
648 __be32 agf_btreeblks;
649 uuid_t agf_uuid;
650
651 __be32 agf_rmap_blocks;
652 __be32 agf_refcount_blocks;
653
654 __be32 agf_refcount_root;
655 __be32 agf_refcount_level;
656
657
658
659
660
661
662 __be64 agf_spare64[14];
663
664
665 __be64 agf_lsn;
666 __be32 agf_crc;
667 __be32 agf_spare2;
668
669
670} xfs_agf_t;
671
672#define XFS_AGF_CRC_OFF offsetof(struct xfs_agf, agf_crc)
673
674#define XFS_AGF_MAGICNUM 0x00000001
675#define XFS_AGF_VERSIONNUM 0x00000002
676#define XFS_AGF_SEQNO 0x00000004
677#define XFS_AGF_LENGTH 0x00000008
678#define XFS_AGF_ROOTS 0x00000010
679#define XFS_AGF_LEVELS 0x00000020
680#define XFS_AGF_FLFIRST 0x00000040
681#define XFS_AGF_FLLAST 0x00000080
682#define XFS_AGF_FLCOUNT 0x00000100
683#define XFS_AGF_FREEBLKS 0x00000200
684#define XFS_AGF_LONGEST 0x00000400
685#define XFS_AGF_BTREEBLKS 0x00000800
686#define XFS_AGF_UUID 0x00001000
687#define XFS_AGF_RMAP_BLOCKS 0x00002000
688#define XFS_AGF_REFCOUNT_BLOCKS 0x00004000
689#define XFS_AGF_REFCOUNT_ROOT 0x00008000
690#define XFS_AGF_REFCOUNT_LEVEL 0x00010000
691#define XFS_AGF_SPARE64 0x00020000
692#define XFS_AGF_NUM_BITS 18
693#define XFS_AGF_ALL_BITS ((1 << XFS_AGF_NUM_BITS) - 1)
694
695#define XFS_AGF_FLAGS \
696 { XFS_AGF_MAGICNUM, "MAGICNUM" }, \
697 { XFS_AGF_VERSIONNUM, "VERSIONNUM" }, \
698 { XFS_AGF_SEQNO, "SEQNO" }, \
699 { XFS_AGF_LENGTH, "LENGTH" }, \
700 { XFS_AGF_ROOTS, "ROOTS" }, \
701 { XFS_AGF_LEVELS, "LEVELS" }, \
702 { XFS_AGF_FLFIRST, "FLFIRST" }, \
703 { XFS_AGF_FLLAST, "FLLAST" }, \
704 { XFS_AGF_FLCOUNT, "FLCOUNT" }, \
705 { XFS_AGF_FREEBLKS, "FREEBLKS" }, \
706 { XFS_AGF_LONGEST, "LONGEST" }, \
707 { XFS_AGF_BTREEBLKS, "BTREEBLKS" }, \
708 { XFS_AGF_UUID, "UUID" }, \
709 { XFS_AGF_RMAP_BLOCKS, "RMAP_BLOCKS" }, \
710 { XFS_AGF_REFCOUNT_BLOCKS, "REFCOUNT_BLOCKS" }, \
711 { XFS_AGF_REFCOUNT_ROOT, "REFCOUNT_ROOT" }, \
712 { XFS_AGF_REFCOUNT_LEVEL, "REFCOUNT_LEVEL" }, \
713 { XFS_AGF_SPARE64, "SPARE64" }
714
715
716#define XFS_AGF_DADDR(mp) ((xfs_daddr_t)(1 << (mp)->m_sectbb_log))
717#define XFS_AGF_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp))
718#define XFS_BUF_TO_AGF(bp) ((xfs_agf_t *)((bp)->b_addr))
719
720
721
722
723#define XFS_AGI_UNLINKED_BUCKETS 64
724
725typedef struct xfs_agi {
726
727
728
729 __be32 agi_magicnum;
730 __be32 agi_versionnum;
731 __be32 agi_seqno;
732 __be32 agi_length;
733
734
735
736
737
738 __be32 agi_count;
739 __be32 agi_root;
740 __be32 agi_level;
741 __be32 agi_freecount;
742
743 __be32 agi_newino;
744 __be32 agi_dirino;
745
746
747
748
749 __be32 agi_unlinked[XFS_AGI_UNLINKED_BUCKETS];
750
751
752
753 uuid_t agi_uuid;
754 __be32 agi_crc;
755 __be32 agi_pad32;
756 __be64 agi_lsn;
757
758 __be32 agi_free_root;
759 __be32 agi_free_level;
760
761
762} xfs_agi_t;
763
764#define XFS_AGI_CRC_OFF offsetof(struct xfs_agi, agi_crc)
765
766#define XFS_AGI_MAGICNUM (1 << 0)
767#define XFS_AGI_VERSIONNUM (1 << 1)
768#define XFS_AGI_SEQNO (1 << 2)
769#define XFS_AGI_LENGTH (1 << 3)
770#define XFS_AGI_COUNT (1 << 4)
771#define XFS_AGI_ROOT (1 << 5)
772#define XFS_AGI_LEVEL (1 << 6)
773#define XFS_AGI_FREECOUNT (1 << 7)
774#define XFS_AGI_NEWINO (1 << 8)
775#define XFS_AGI_DIRINO (1 << 9)
776#define XFS_AGI_UNLINKED (1 << 10)
777#define XFS_AGI_NUM_BITS_R1 11
778#define XFS_AGI_ALL_BITS_R1 ((1 << XFS_AGI_NUM_BITS_R1) - 1)
779#define XFS_AGI_FREE_ROOT (1 << 11)
780#define XFS_AGI_FREE_LEVEL (1 << 12)
781#define XFS_AGI_NUM_BITS_R2 13
782
783
784#define XFS_AGI_DADDR(mp) ((xfs_daddr_t)(2 << (mp)->m_sectbb_log))
785#define XFS_AGI_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGI_DADDR(mp))
786#define XFS_BUF_TO_AGI(bp) ((xfs_agi_t *)((bp)->b_addr))
787
788
789
790
791
792#define XFS_AGFL_DADDR(mp) ((xfs_daddr_t)(3 << (mp)->m_sectbb_log))
793#define XFS_AGFL_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGFL_DADDR(mp))
794#define XFS_BUF_TO_AGFL(bp) ((xfs_agfl_t *)((bp)->b_addr))
795
796#define XFS_BUF_TO_AGFL_BNO(mp, bp) \
797 (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
798 &(XFS_BUF_TO_AGFL(bp)->agfl_bno[0]) : \
799 (__be32 *)(bp)->b_addr)
800
801
802
803
804
805
806#define XFS_AGFL_SIZE(mp) \
807 (((mp)->m_sb.sb_sectsize - \
808 (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
809 sizeof(struct xfs_agfl) : 0)) / \
810 sizeof(xfs_agblock_t))
811
812typedef struct xfs_agfl {
813 __be32 agfl_magicnum;
814 __be32 agfl_seqno;
815 uuid_t agfl_uuid;
816 __be64 agfl_lsn;
817 __be32 agfl_crc;
818 __be32 agfl_bno[];
819} __attribute__((packed)) xfs_agfl_t;
820
821#define XFS_AGFL_CRC_OFF offsetof(struct xfs_agfl, agfl_crc)
822
823#define XFS_AGB_TO_FSB(mp,agno,agbno) \
824 (((xfs_fsblock_t)(agno) << (mp)->m_sb.sb_agblklog) | (agbno))
825#define XFS_FSB_TO_AGNO(mp,fsbno) \
826 ((xfs_agnumber_t)((fsbno) >> (mp)->m_sb.sb_agblklog))
827#define XFS_FSB_TO_AGBNO(mp,fsbno) \
828 ((xfs_agblock_t)((fsbno) & xfs_mask32lo((mp)->m_sb.sb_agblklog)))
829#define XFS_AGB_TO_DADDR(mp,agno,agbno) \
830 ((xfs_daddr_t)XFS_FSB_TO_BB(mp, \
831 (xfs_fsblock_t)(agno) * (mp)->m_sb.sb_agblocks + (agbno)))
832#define XFS_AG_DADDR(mp,agno,d) (XFS_AGB_TO_DADDR(mp, agno, 0) + (d))
833
834
835
836
837
838#define XFS_AG_CHECK_DADDR(mp,d,len) \
839 ((len) == 1 ? \
840 ASSERT((d) == XFS_SB_DADDR || \
841 xfs_daddr_to_agbno(mp, d) != XFS_SB_DADDR) : \
842 ASSERT(xfs_daddr_to_agno(mp, d) == \
843 xfs_daddr_to_agno(mp, (d) + (len) - 1)))
844
845typedef struct xfs_timestamp {
846 __be32 t_sec;
847 __be32 t_nsec;
848} xfs_timestamp_t;
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867#define XFS_DINODE_MAGIC 0x494e
868typedef struct xfs_dinode {
869 __be16 di_magic;
870 __be16 di_mode;
871 __u8 di_version;
872 __u8 di_format;
873 __be16 di_onlink;
874 __be32 di_uid;
875 __be32 di_gid;
876 __be32 di_nlink;
877 __be16 di_projid_lo;
878 __be16 di_projid_hi;
879 __u8 di_pad[6];
880 __be16 di_flushiter;
881 xfs_timestamp_t di_atime;
882 xfs_timestamp_t di_mtime;
883 xfs_timestamp_t di_ctime;
884 __be64 di_size;
885 __be64 di_nblocks;
886 __be32 di_extsize;
887 __be32 di_nextents;
888 __be16 di_anextents;
889 __u8 di_forkoff;
890 __s8 di_aformat;
891 __be32 di_dmevmask;
892 __be16 di_dmstate;
893 __be16 di_flags;
894 __be32 di_gen;
895
896
897 __be32 di_next_unlinked;
898
899
900 __le32 di_crc;
901 __be64 di_changecount;
902 __be64 di_lsn;
903 __be64 di_flags2;
904 __be32 di_cowextsize;
905 __u8 di_pad2[12];
906
907
908 xfs_timestamp_t di_crtime;
909 __be64 di_ino;
910 uuid_t di_uuid;
911
912
913} xfs_dinode_t;
914
915#define XFS_DINODE_CRC_OFF offsetof(struct xfs_dinode, di_crc)
916
917#define DI_MAX_FLUSH 0xffff
918
919
920
921
922
923static inline uint xfs_dinode_size(int version)
924{
925 if (version == 3)
926 return sizeof(struct xfs_dinode);
927 return offsetof(struct xfs_dinode, di_crc);
928}
929
930
931
932
933
934#define XFS_MAXLINK ((1U << 31) - 1U)
935
936
937
938
939typedef enum xfs_dinode_fmt {
940 XFS_DINODE_FMT_DEV,
941 XFS_DINODE_FMT_LOCAL,
942 XFS_DINODE_FMT_EXTENTS,
943 XFS_DINODE_FMT_BTREE,
944 XFS_DINODE_FMT_UUID
945} xfs_dinode_fmt_t;
946
947
948
949
950#define XFS_DINODE_MIN_LOG 8
951#define XFS_DINODE_MAX_LOG 11
952#define XFS_DINODE_MIN_SIZE (1 << XFS_DINODE_MIN_LOG)
953#define XFS_DINODE_MAX_SIZE (1 << XFS_DINODE_MAX_LOG)
954
955
956
957
958#define XFS_LITINO(mp, version) \
959 ((int)(((mp)->m_sb.sb_inodesize) - xfs_dinode_size(version)))
960
961
962
963
964#define XFS_DFORK_Q(dip) ((dip)->di_forkoff != 0)
965#define XFS_DFORK_BOFF(dip) ((int)((dip)->di_forkoff << 3))
966
967#define XFS_DFORK_DSIZE(dip,mp) \
968 (XFS_DFORK_Q(dip) ? \
969 XFS_DFORK_BOFF(dip) : \
970 XFS_LITINO(mp, (dip)->di_version))
971#define XFS_DFORK_ASIZE(dip,mp) \
972 (XFS_DFORK_Q(dip) ? \
973 XFS_LITINO(mp, (dip)->di_version) - XFS_DFORK_BOFF(dip) : \
974 0)
975#define XFS_DFORK_SIZE(dip,mp,w) \
976 ((w) == XFS_DATA_FORK ? \
977 XFS_DFORK_DSIZE(dip, mp) : \
978 XFS_DFORK_ASIZE(dip, mp))
979
980
981
982
983#define XFS_DFORK_DPTR(dip) \
984 ((char *)dip + xfs_dinode_size(dip->di_version))
985#define XFS_DFORK_APTR(dip) \
986 (XFS_DFORK_DPTR(dip) + XFS_DFORK_BOFF(dip))
987#define XFS_DFORK_PTR(dip,w) \
988 ((w) == XFS_DATA_FORK ? XFS_DFORK_DPTR(dip) : XFS_DFORK_APTR(dip))
989
990#define XFS_DFORK_FORMAT(dip,w) \
991 ((w) == XFS_DATA_FORK ? \
992 (dip)->di_format : \
993 (dip)->di_aformat)
994#define XFS_DFORK_NEXTENTS(dip,w) \
995 ((w) == XFS_DATA_FORK ? \
996 be32_to_cpu((dip)->di_nextents) : \
997 be16_to_cpu((dip)->di_anextents))
998
999
1000
1001
1002
1003static inline xfs_dev_t xfs_dinode_get_rdev(struct xfs_dinode *dip)
1004{
1005 return be32_to_cpu(*(__be32 *)XFS_DFORK_DPTR(dip));
1006}
1007
1008static inline void xfs_dinode_put_rdev(struct xfs_dinode *dip, xfs_dev_t rdev)
1009{
1010 *(__be32 *)XFS_DFORK_DPTR(dip) = cpu_to_be32(rdev);
1011}
1012
1013
1014
1015
1016#define XFS_DIFLAG_REALTIME_BIT 0
1017#define XFS_DIFLAG_PREALLOC_BIT 1
1018#define XFS_DIFLAG_NEWRTBM_BIT 2
1019#define XFS_DIFLAG_IMMUTABLE_BIT 3
1020#define XFS_DIFLAG_APPEND_BIT 4
1021#define XFS_DIFLAG_SYNC_BIT 5
1022#define XFS_DIFLAG_NOATIME_BIT 6
1023#define XFS_DIFLAG_NODUMP_BIT 7
1024#define XFS_DIFLAG_RTINHERIT_BIT 8
1025#define XFS_DIFLAG_PROJINHERIT_BIT 9
1026#define XFS_DIFLAG_NOSYMLINKS_BIT 10
1027#define XFS_DIFLAG_EXTSIZE_BIT 11
1028#define XFS_DIFLAG_EXTSZINHERIT_BIT 12
1029#define XFS_DIFLAG_NODEFRAG_BIT 13
1030#define XFS_DIFLAG_FILESTREAM_BIT 14
1031#define XFS_DIFLAG_REALTIME (1 << XFS_DIFLAG_REALTIME_BIT)
1032#define XFS_DIFLAG_PREALLOC (1 << XFS_DIFLAG_PREALLOC_BIT)
1033#define XFS_DIFLAG_NEWRTBM (1 << XFS_DIFLAG_NEWRTBM_BIT)
1034#define XFS_DIFLAG_IMMUTABLE (1 << XFS_DIFLAG_IMMUTABLE_BIT)
1035#define XFS_DIFLAG_APPEND (1 << XFS_DIFLAG_APPEND_BIT)
1036#define XFS_DIFLAG_SYNC (1 << XFS_DIFLAG_SYNC_BIT)
1037#define XFS_DIFLAG_NOATIME (1 << XFS_DIFLAG_NOATIME_BIT)
1038#define XFS_DIFLAG_NODUMP (1 << XFS_DIFLAG_NODUMP_BIT)
1039#define XFS_DIFLAG_RTINHERIT (1 << XFS_DIFLAG_RTINHERIT_BIT)
1040#define XFS_DIFLAG_PROJINHERIT (1 << XFS_DIFLAG_PROJINHERIT_BIT)
1041#define XFS_DIFLAG_NOSYMLINKS (1 << XFS_DIFLAG_NOSYMLINKS_BIT)
1042#define XFS_DIFLAG_EXTSIZE (1 << XFS_DIFLAG_EXTSIZE_BIT)
1043#define XFS_DIFLAG_EXTSZINHERIT (1 << XFS_DIFLAG_EXTSZINHERIT_BIT)
1044#define XFS_DIFLAG_NODEFRAG (1 << XFS_DIFLAG_NODEFRAG_BIT)
1045#define XFS_DIFLAG_FILESTREAM (1 << XFS_DIFLAG_FILESTREAM_BIT)
1046
1047#define XFS_DIFLAG_ANY \
1048 (XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \
1049 XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \
1050 XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \
1051 XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS | XFS_DIFLAG_EXTSIZE | \
1052 XFS_DIFLAG_EXTSZINHERIT | XFS_DIFLAG_NODEFRAG | XFS_DIFLAG_FILESTREAM)
1053
1054
1055
1056
1057
1058#define XFS_DIFLAG2_DAX_BIT 0
1059#define XFS_DIFLAG2_REFLINK_BIT 1
1060#define XFS_DIFLAG2_COWEXTSIZE_BIT 2
1061#define XFS_DIFLAG2_DAX (1 << XFS_DIFLAG2_DAX_BIT)
1062#define XFS_DIFLAG2_REFLINK (1 << XFS_DIFLAG2_REFLINK_BIT)
1063#define XFS_DIFLAG2_COWEXTSIZE (1 << XFS_DIFLAG2_COWEXTSIZE_BIT)
1064
1065#define XFS_DIFLAG2_ANY \
1066 (XFS_DIFLAG2_DAX | XFS_DIFLAG2_REFLINK | XFS_DIFLAG2_COWEXTSIZE)
1067
1068
1069
1070
1071
1072
1073
1074
1075#define XFS_INO_MASK(k) (uint32_t)((1ULL << (k)) - 1)
1076#define XFS_INO_OFFSET_BITS(mp) (mp)->m_sb.sb_inopblog
1077#define XFS_INO_AGBNO_BITS(mp) (mp)->m_sb.sb_agblklog
1078#define XFS_INO_AGINO_BITS(mp) (mp)->m_agino_log
1079#define XFS_INO_AGNO_BITS(mp) (mp)->m_agno_log
1080#define XFS_INO_BITS(mp) \
1081 XFS_INO_AGNO_BITS(mp) + XFS_INO_AGINO_BITS(mp)
1082#define XFS_INO_TO_AGNO(mp,i) \
1083 ((xfs_agnumber_t)((i) >> XFS_INO_AGINO_BITS(mp)))
1084#define XFS_INO_TO_AGINO(mp,i) \
1085 ((xfs_agino_t)(i) & XFS_INO_MASK(XFS_INO_AGINO_BITS(mp)))
1086#define XFS_INO_TO_AGBNO(mp,i) \
1087 (((xfs_agblock_t)(i) >> XFS_INO_OFFSET_BITS(mp)) & \
1088 XFS_INO_MASK(XFS_INO_AGBNO_BITS(mp)))
1089#define XFS_INO_TO_OFFSET(mp,i) \
1090 ((int)(i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
1091#define XFS_INO_TO_FSB(mp,i) \
1092 XFS_AGB_TO_FSB(mp, XFS_INO_TO_AGNO(mp,i), XFS_INO_TO_AGBNO(mp,i))
1093#define XFS_AGINO_TO_INO(mp,a,i) \
1094 (((xfs_ino_t)(a) << XFS_INO_AGINO_BITS(mp)) | (i))
1095#define XFS_AGINO_TO_AGBNO(mp,i) ((i) >> XFS_INO_OFFSET_BITS(mp))
1096#define XFS_AGINO_TO_OFFSET(mp,i) \
1097 ((i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
1098#define XFS_OFFBNO_TO_AGINO(mp,b,o) \
1099 ((xfs_agino_t)(((b) << XFS_INO_OFFSET_BITS(mp)) | (o)))
1100
1101#define XFS_MAXINUMBER ((xfs_ino_t)((1ULL << 56) - 1ULL))
1102#define XFS_MAXINUMBER_32 ((xfs_ino_t)((1ULL << 32) - 1ULL))
1103
1104
1105
1106
1107
1108
1109#define XFS_MAX_RTEXTSIZE (1024 * 1024 * 1024)
1110#define XFS_DFL_RTEXTSIZE (64 * 1024)
1111#define XFS_MIN_RTEXTSIZE (4 * 1024)
1112
1113#define XFS_BLOCKSIZE(mp) ((mp)->m_sb.sb_blocksize)
1114#define XFS_BLOCKMASK(mp) ((mp)->m_blockmask)
1115#define XFS_BLOCKWSIZE(mp) ((mp)->m_blockwsize)
1116#define XFS_BLOCKWMASK(mp) ((mp)->m_blockwmask)
1117
1118
1119
1120
1121#define XFS_SUMOFFS(mp,ls,bb) ((int)((ls) * (mp)->m_sb.sb_rbmblocks + (bb)))
1122#define XFS_SUMOFFSTOBLOCK(mp,s) \
1123 (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog)
1124#define XFS_SUMPTR(mp,bp,so) \
1125 ((xfs_suminfo_t *)((bp)->b_addr + \
1126 (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp))))
1127
1128#define XFS_BITTOBLOCK(mp,bi) ((bi) >> (mp)->m_blkbit_log)
1129#define XFS_BLOCKTOBIT(mp,bb) ((bb) << (mp)->m_blkbit_log)
1130#define XFS_BITTOWORD(mp,bi) \
1131 ((int)(((bi) >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp)))
1132
1133#define XFS_RTMIN(a,b) ((a) < (b) ? (a) : (b))
1134#define XFS_RTMAX(a,b) ((a) > (b) ? (a) : (b))
1135
1136#define XFS_RTLOBIT(w) xfs_lowbit32(w)
1137#define XFS_RTHIBIT(w) xfs_highbit32(w)
1138
1139#define XFS_RTBLOCKLOG(b) xfs_highbit64(b)
1140
1141
1142
1143
1144#define XFS_DQUOT_MAGIC 0x4451
1145#define XFS_DQUOT_VERSION (u_int8_t)0x01
1146
1147
1148
1149
1150
1151
1152
1153typedef struct xfs_disk_dquot {
1154 __be16 d_magic;
1155 __u8 d_version;
1156 __u8 d_flags;
1157 __be32 d_id;
1158 __be64 d_blk_hardlimit;
1159 __be64 d_blk_softlimit;
1160 __be64 d_ino_hardlimit;
1161 __be64 d_ino_softlimit;
1162 __be64 d_bcount;
1163 __be64 d_icount;
1164 __be32 d_itimer;
1165
1166 __be32 d_btimer;
1167 __be16 d_iwarns;
1168 __be16 d_bwarns;
1169 __be32 d_pad0;
1170 __be64 d_rtb_hardlimit;
1171 __be64 d_rtb_softlimit;
1172 __be64 d_rtbcount;
1173 __be32 d_rtbtimer;
1174 __be16 d_rtbwarns;
1175 __be16 d_pad;
1176} xfs_disk_dquot_t;
1177
1178
1179
1180
1181
1182typedef struct xfs_dqblk {
1183 xfs_disk_dquot_t dd_diskdq;
1184 char dd_fill[4];
1185
1186
1187
1188
1189 __be32 dd_crc;
1190 __be64 dd_lsn;
1191 uuid_t dd_uuid;
1192} xfs_dqblk_t;
1193
1194#define XFS_DQUOT_CRC_OFF offsetof(struct xfs_dqblk, dd_crc)
1195
1196
1197
1198
1199#define XFS_SYMLINK_MAGIC 0x58534c4d
1200
1201struct xfs_dsymlink_hdr {
1202 __be32 sl_magic;
1203 __be32 sl_offset;
1204 __be32 sl_bytes;
1205 __be32 sl_crc;
1206 uuid_t sl_uuid;
1207 __be64 sl_owner;
1208 __be64 sl_blkno;
1209 __be64 sl_lsn;
1210};
1211
1212#define XFS_SYMLINK_CRC_OFF offsetof(struct xfs_dsymlink_hdr, sl_crc)
1213
1214#define XFS_SYMLINK_MAXLEN 1024
1215
1216
1217
1218
1219
1220#define XFS_SYMLINK_MAPS 3
1221
1222#define XFS_SYMLINK_BUF_SPACE(mp, bufsize) \
1223 ((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \
1224 sizeof(struct xfs_dsymlink_hdr) : 0))
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234#define XFS_ABTB_MAGIC 0x41425442
1235#define XFS_ABTB_CRC_MAGIC 0x41423342
1236#define XFS_ABTC_MAGIC 0x41425443
1237#define XFS_ABTC_CRC_MAGIC 0x41423343
1238
1239
1240
1241
1242typedef struct xfs_alloc_rec {
1243 __be32 ar_startblock;
1244 __be32 ar_blockcount;
1245} xfs_alloc_rec_t, xfs_alloc_key_t;
1246
1247typedef struct xfs_alloc_rec_incore {
1248 xfs_agblock_t ar_startblock;
1249 xfs_extlen_t ar_blockcount;
1250} xfs_alloc_rec_incore_t;
1251
1252
1253typedef __be32 xfs_alloc_ptr_t;
1254
1255
1256
1257
1258
1259#define XFS_BNO_BLOCK(mp) ((xfs_agblock_t)(XFS_AGFL_BLOCK(mp) + 1))
1260#define XFS_CNT_BLOCK(mp) ((xfs_agblock_t)(XFS_BNO_BLOCK(mp) + 1))
1261
1262
1263
1264
1265
1266
1267
1268#define XFS_IBT_MAGIC 0x49414254
1269#define XFS_IBT_CRC_MAGIC 0x49414233
1270#define XFS_FIBT_MAGIC 0x46494254
1271#define XFS_FIBT_CRC_MAGIC 0x46494233
1272
1273typedef uint64_t xfs_inofree_t;
1274#define XFS_INODES_PER_CHUNK (NBBY * sizeof(xfs_inofree_t))
1275#define XFS_INODES_PER_CHUNK_LOG (XFS_NBBYLOG + 3)
1276#define XFS_INOBT_ALL_FREE ((xfs_inofree_t)-1)
1277#define XFS_INOBT_MASK(i) ((xfs_inofree_t)1 << (i))
1278
1279#define XFS_INOBT_HOLEMASK_FULL 0
1280#define XFS_INOBT_HOLEMASK_BITS (NBBY * sizeof(uint16_t))
1281#define XFS_INODES_PER_HOLEMASK_BIT \
1282 (XFS_INODES_PER_CHUNK / (NBBY * sizeof(uint16_t)))
1283
1284static inline xfs_inofree_t xfs_inobt_maskn(int i, int n)
1285{
1286 return ((n >= XFS_INODES_PER_CHUNK ? 0 : XFS_INOBT_MASK(n)) - 1) << i;
1287}
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299typedef struct xfs_inobt_rec {
1300 __be32 ir_startino;
1301 union {
1302 struct {
1303 __be32 ir_freecount;
1304 } f;
1305 struct {
1306 __be16 ir_holemask;
1307 __u8 ir_count;
1308 __u8 ir_freecount;
1309 } sp;
1310 } ir_u;
1311 __be64 ir_free;
1312} xfs_inobt_rec_t;
1313
1314typedef struct xfs_inobt_rec_incore {
1315 xfs_agino_t ir_startino;
1316 uint16_t ir_holemask;
1317 uint8_t ir_count;
1318 uint8_t ir_freecount;
1319 xfs_inofree_t ir_free;
1320} xfs_inobt_rec_incore_t;
1321
1322static inline bool xfs_inobt_issparse(uint16_t holemask)
1323{
1324
1325 return holemask;
1326}
1327
1328
1329
1330
1331typedef struct xfs_inobt_key {
1332 __be32 ir_startino;
1333} xfs_inobt_key_t;
1334
1335
1336typedef __be32 xfs_inobt_ptr_t;
1337
1338
1339
1340
1341#define XFS_IBT_BLOCK(mp) ((xfs_agblock_t)(XFS_CNT_BLOCK(mp) + 1))
1342#define XFS_FIBT_BLOCK(mp) ((xfs_agblock_t)(XFS_IBT_BLOCK(mp) + 1))
1343
1344
1345
1346
1347
1348
1349#define XFS_RMAP_CRC_MAGIC 0x524d4233
1350
1351
1352
1353
1354
1355#define XFS_OWNER_INFO_ATTR_FORK (1 << 0)
1356#define XFS_OWNER_INFO_BMBT_BLOCK (1 << 1)
1357struct xfs_owner_info {
1358 uint64_t oi_owner;
1359 xfs_fileoff_t oi_offset;
1360 unsigned int oi_flags;
1361};
1362
1363
1364
1365
1366
1367
1368
1369
1370#define XFS_RMAP_OWN_NULL (-1ULL)
1371#define XFS_RMAP_OWN_UNKNOWN (-2ULL)
1372#define XFS_RMAP_OWN_FS (-3ULL)
1373#define XFS_RMAP_OWN_LOG (-4ULL)
1374#define XFS_RMAP_OWN_AG (-5ULL)
1375#define XFS_RMAP_OWN_INOBT (-6ULL)
1376#define XFS_RMAP_OWN_INODES (-7ULL)
1377#define XFS_RMAP_OWN_REFC (-8ULL)
1378#define XFS_RMAP_OWN_COW (-9ULL)
1379#define XFS_RMAP_OWN_MIN (-10ULL)
1380
1381#define XFS_RMAP_NON_INODE_OWNER(owner) (!!((owner) & (1ULL << 63)))
1382
1383
1384
1385
1386struct xfs_rmap_rec {
1387 __be32 rm_startblock;
1388 __be32 rm_blockcount;
1389 __be64 rm_owner;
1390 __be64 rm_offset;
1391};
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401#define XFS_RMAP_OFF_ATTR_FORK ((uint64_t)1ULL << 63)
1402#define XFS_RMAP_OFF_BMBT_BLOCK ((uint64_t)1ULL << 62)
1403#define XFS_RMAP_OFF_UNWRITTEN ((uint64_t)1ULL << 61)
1404
1405#define XFS_RMAP_LEN_MAX ((uint32_t)~0U)
1406#define XFS_RMAP_OFF_FLAGS (XFS_RMAP_OFF_ATTR_FORK | \
1407 XFS_RMAP_OFF_BMBT_BLOCK | \
1408 XFS_RMAP_OFF_UNWRITTEN)
1409#define XFS_RMAP_OFF_MASK ((uint64_t)0x3FFFFFFFFFFFFFULL)
1410
1411#define XFS_RMAP_OFF(off) ((off) & XFS_RMAP_OFF_MASK)
1412
1413#define XFS_RMAP_IS_BMBT_BLOCK(off) (!!((off) & XFS_RMAP_OFF_BMBT_BLOCK))
1414#define XFS_RMAP_IS_ATTR_FORK(off) (!!((off) & XFS_RMAP_OFF_ATTR_FORK))
1415#define XFS_RMAP_IS_UNWRITTEN(len) (!!((off) & XFS_RMAP_OFF_UNWRITTEN))
1416
1417#define RMAPBT_STARTBLOCK_BITLEN 32
1418#define RMAPBT_BLOCKCOUNT_BITLEN 32
1419#define RMAPBT_OWNER_BITLEN 64
1420#define RMAPBT_ATTRFLAG_BITLEN 1
1421#define RMAPBT_BMBTFLAG_BITLEN 1
1422#define RMAPBT_EXNTFLAG_BITLEN 1
1423#define RMAPBT_UNUSED_OFFSET_BITLEN 7
1424#define RMAPBT_OFFSET_BITLEN 54
1425
1426#define XFS_RMAP_ATTR_FORK (1 << 0)
1427#define XFS_RMAP_BMBT_BLOCK (1 << 1)
1428#define XFS_RMAP_UNWRITTEN (1 << 2)
1429#define XFS_RMAP_KEY_FLAGS (XFS_RMAP_ATTR_FORK | \
1430 XFS_RMAP_BMBT_BLOCK)
1431#define XFS_RMAP_REC_FLAGS (XFS_RMAP_UNWRITTEN)
1432struct xfs_rmap_irec {
1433 xfs_agblock_t rm_startblock;
1434 xfs_extlen_t rm_blockcount;
1435 uint64_t rm_owner;
1436 uint64_t rm_offset;
1437 unsigned int rm_flags;
1438};
1439
1440
1441
1442
1443
1444
1445struct xfs_rmap_key {
1446 __be32 rm_startblock;
1447 __be64 rm_owner;
1448 __be64 rm_offset;
1449} __attribute__((packed));
1450
1451
1452typedef __be32 xfs_rmap_ptr_t;
1453
1454#define XFS_RMAP_BLOCK(mp) \
1455 (xfs_sb_version_hasfinobt(&((mp)->m_sb)) ? \
1456 XFS_FIBT_BLOCK(mp) + 1 : \
1457 XFS_IBT_BLOCK(mp) + 1)
1458
1459
1460
1461
1462
1463#define XFS_REFC_CRC_MAGIC 0x52334643
1464
1465unsigned int xfs_refc_block(struct xfs_mount *mp);
1466
1467
1468
1469
1470
1471
1472
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1481
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1485
1486
1487
1488#define XFS_REFC_COW_START ((xfs_agblock_t)(1U << 31))
1489#define REFCNTBT_COWFLAG_BITLEN 1
1490#define REFCNTBT_AGBLOCK_BITLEN 31
1491
1492struct xfs_refcount_rec {
1493 __be32 rc_startblock;
1494 __be32 rc_blockcount;
1495 __be32 rc_refcount;
1496};
1497
1498struct xfs_refcount_key {
1499 __be32 rc_startblock;
1500};
1501
1502struct xfs_refcount_irec {
1503 xfs_agblock_t rc_startblock;
1504 xfs_extlen_t rc_blockcount;
1505 xfs_nlink_t rc_refcount;
1506};
1507
1508#define MAXREFCOUNT ((xfs_nlink_t)~0U)
1509#define MAXREFCEXTLEN ((xfs_extlen_t)~0U)
1510
1511
1512typedef __be32 xfs_refcount_ptr_t;
1513
1514
1515
1516
1517
1518
1519
1520
1521#define XFS_BMAP_MAGIC 0x424d4150
1522#define XFS_BMAP_CRC_MAGIC 0x424d4133
1523
1524
1525
1526
1527typedef struct xfs_bmdr_block {
1528 __be16 bb_level;
1529 __be16 bb_numrecs;
1530} xfs_bmdr_block_t;
1531
1532
1533
1534
1535
1536
1537
1538
1539#define BMBT_EXNTFLAG_BITLEN 1
1540#define BMBT_STARTOFF_BITLEN 54
1541#define BMBT_STARTBLOCK_BITLEN 52
1542#define BMBT_BLOCKCOUNT_BITLEN 21
1543
1544typedef struct xfs_bmbt_rec {
1545 __be64 l0, l1;
1546} xfs_bmbt_rec_t;
1547
1548typedef uint64_t xfs_bmbt_rec_base_t;
1549typedef xfs_bmbt_rec_t xfs_bmdr_rec_t;
1550
1551typedef struct xfs_bmbt_rec_host {
1552 uint64_t l0, l1;
1553} xfs_bmbt_rec_host_t;
1554
1555
1556
1557
1558#define STARTBLOCKVALBITS 17
1559#define STARTBLOCKMASKBITS (15 + 20)
1560#define STARTBLOCKMASK \
1561 (((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
1562
1563static inline int isnullstartblock(xfs_fsblock_t x)
1564{
1565 return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK;
1566}
1567
1568static inline xfs_fsblock_t nullstartblock(int k)
1569{
1570 ASSERT(k < (1 << STARTBLOCKVALBITS));
1571 return STARTBLOCKMASK | (k);
1572}
1573
1574static inline xfs_filblks_t startblockval(xfs_fsblock_t x)
1575{
1576 return (xfs_filblks_t)((x) & ~STARTBLOCKMASK);
1577}
1578
1579
1580
1581
1582typedef enum {
1583 XFS_EXT_NORM, XFS_EXT_UNWRITTEN,
1584} xfs_exntst_t;
1585
1586
1587
1588
1589typedef struct xfs_bmbt_irec
1590{
1591 xfs_fileoff_t br_startoff;
1592 xfs_fsblock_t br_startblock;
1593 xfs_filblks_t br_blockcount;
1594 xfs_exntst_t br_state;
1595} xfs_bmbt_irec_t;
1596
1597
1598
1599
1600typedef struct xfs_bmbt_key {
1601 __be64 br_startoff;
1602} xfs_bmbt_key_t, xfs_bmdr_key_t;
1603
1604
1605typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t;
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623struct xfs_btree_block_shdr {
1624 __be32 bb_leftsib;
1625 __be32 bb_rightsib;
1626
1627 __be64 bb_blkno;
1628 __be64 bb_lsn;
1629 uuid_t bb_uuid;
1630 __be32 bb_owner;
1631 __le32 bb_crc;
1632};
1633
1634
1635struct xfs_btree_block_lhdr {
1636 __be64 bb_leftsib;
1637 __be64 bb_rightsib;
1638
1639 __be64 bb_blkno;
1640 __be64 bb_lsn;
1641 uuid_t bb_uuid;
1642 __be64 bb_owner;
1643 __le32 bb_crc;
1644 __be32 bb_pad;
1645};
1646
1647struct xfs_btree_block {
1648 __be32 bb_magic;
1649 __be16 bb_level;
1650 __be16 bb_numrecs;
1651 union {
1652 struct xfs_btree_block_shdr s;
1653 struct xfs_btree_block_lhdr l;
1654 } bb_u;
1655};
1656
1657
1658#define XFS_BTREE_SBLOCK_LEN \
1659 (offsetof(struct xfs_btree_block, bb_u) + \
1660 offsetof(struct xfs_btree_block_shdr, bb_blkno))
1661
1662#define XFS_BTREE_LBLOCK_LEN \
1663 (offsetof(struct xfs_btree_block, bb_u) + \
1664 offsetof(struct xfs_btree_block_lhdr, bb_blkno))
1665
1666
1667#define XFS_BTREE_SBLOCK_CRC_LEN \
1668 (offsetof(struct xfs_btree_block, bb_u) + \
1669 sizeof(struct xfs_btree_block_shdr))
1670#define XFS_BTREE_LBLOCK_CRC_LEN \
1671 (offsetof(struct xfs_btree_block, bb_u) + \
1672 sizeof(struct xfs_btree_block_lhdr))
1673
1674#define XFS_BTREE_SBLOCK_CRC_OFF \
1675 offsetof(struct xfs_btree_block, bb_u.s.bb_crc)
1676#define XFS_BTREE_LBLOCK_CRC_OFF \
1677 offsetof(struct xfs_btree_block, bb_u.l.bb_crc)
1678
1679
1680
1681
1682struct xfs_acl_entry {
1683 __be32 ae_tag;
1684 __be32 ae_id;
1685 __be16 ae_perm;
1686 __be16 ae_pad;
1687};
1688
1689struct xfs_acl {
1690 __be32 acl_cnt;
1691 struct xfs_acl_entry acl_entry[0];
1692};
1693
1694
1695
1696
1697
1698
1699#define XFS_ACL_MAX_ENTRIES(mp) \
1700 (xfs_sb_version_hascrc(&mp->m_sb) \
1701 ? (XFS_XATTR_SIZE_MAX - sizeof(struct xfs_acl)) / \
1702 sizeof(struct xfs_acl_entry) \
1703 : 25)
1704
1705#define XFS_ACL_SIZE(cnt) \
1706 (sizeof(struct xfs_acl) + \
1707 sizeof(struct xfs_acl_entry) * cnt)
1708
1709#define XFS_ACL_MAX_SIZE(mp) \
1710 XFS_ACL_SIZE(XFS_ACL_MAX_ENTRIES((mp)))
1711
1712
1713
1714#define SGI_ACL_FILE "SGI_ACL_FILE"
1715#define SGI_ACL_DEFAULT "SGI_ACL_DEFAULT"
1716#define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
1717#define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
1718
1719#endif
1720