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18#include "xfs.h"
19#include "xfs_fs.h"
20#include "xfs_types.h"
21#include "xfs_bit.h"
22#include "xfs_log.h"
23#include "xfs_inum.h"
24#include "xfs_trans.h"
25#include "xfs_sb.h"
26#include "xfs_ag.h"
27#include "xfs_dir2.h"
28#include "xfs_da_btree.h"
29#include "xfs_bmap_btree.h"
30#include "xfs_alloc_btree.h"
31#include "xfs_ialloc_btree.h"
32#include "xfs_dir2_sf.h"
33#include "xfs_attr_sf.h"
34#include "xfs_dinode.h"
35#include "xfs_inode.h"
36#include "xfs_btree.h"
37#include "xfs_dmapi.h"
38#include "xfs_mount.h"
39#include "xfs_ialloc.h"
40#include "xfs_itable.h"
41#include "xfs_dir2_data.h"
42#include "xfs_dir2_leaf.h"
43#include "xfs_dir2_block.h"
44#include "xfs_inode_item.h"
45#include "xfs_extfree_item.h"
46#include "xfs_alloc.h"
47#include "xfs_bmap.h"
48#include "xfs_rtalloc.h"
49#include "xfs_error.h"
50#include "xfs_attr_leaf.h"
51#include "xfs_rw.h"
52#include "xfs_quota.h"
53#include "xfs_trans_space.h"
54#include "xfs_buf_item.h"
55#include "xfs_filestream.h"
56#include "xfs_vnodeops.h"
57
58
59#ifdef DEBUG
60STATIC void
61xfs_bmap_check_leaf_extents(xfs_btree_cur_t *cur, xfs_inode_t *ip, int whichfork);
62#endif
63
64kmem_zone_t *xfs_bmap_free_item_zone;
65
66
67
68
69
70
71
72
73
74STATIC int
75xfs_bmap_add_attrfork_extents(
76 xfs_trans_t *tp,
77 xfs_inode_t *ip,
78 xfs_fsblock_t *firstblock,
79 xfs_bmap_free_t *flist,
80 int *flags);
81
82
83
84
85STATIC int
86xfs_bmap_add_attrfork_local(
87 xfs_trans_t *tp,
88 xfs_inode_t *ip,
89 xfs_fsblock_t *firstblock,
90 xfs_bmap_free_t *flist,
91 int *flags);
92
93
94
95
96
97STATIC int
98xfs_bmap_add_extent(
99 xfs_inode_t *ip,
100 xfs_extnum_t idx,
101 xfs_btree_cur_t **curp,
102 xfs_bmbt_irec_t *new,
103 xfs_fsblock_t *first,
104 xfs_bmap_free_t *flist,
105 int *logflagsp,
106 xfs_extdelta_t *delta,
107 int whichfork,
108 int rsvd);
109
110
111
112
113
114STATIC int
115xfs_bmap_add_extent_delay_real(
116 xfs_inode_t *ip,
117 xfs_extnum_t idx,
118 xfs_btree_cur_t **curp,
119 xfs_bmbt_irec_t *new,
120 xfs_filblks_t *dnew,
121 xfs_fsblock_t *first,
122 xfs_bmap_free_t *flist,
123 int *logflagsp,
124 xfs_extdelta_t *delta,
125 int rsvd);
126
127
128
129
130
131STATIC int
132xfs_bmap_add_extent_hole_delay(
133 xfs_inode_t *ip,
134 xfs_extnum_t idx,
135 xfs_bmbt_irec_t *new,
136 int *logflagsp,
137 xfs_extdelta_t *delta,
138 int rsvd);
139
140
141
142
143
144STATIC int
145xfs_bmap_add_extent_hole_real(
146 xfs_inode_t *ip,
147 xfs_extnum_t idx,
148 xfs_btree_cur_t *cur,
149 xfs_bmbt_irec_t *new,
150 int *logflagsp,
151 xfs_extdelta_t *delta,
152 int whichfork);
153
154
155
156
157
158STATIC int
159xfs_bmap_add_extent_unwritten_real(
160 xfs_inode_t *ip,
161 xfs_extnum_t idx,
162 xfs_btree_cur_t **curp,
163 xfs_bmbt_irec_t *new,
164 int *logflagsp,
165 xfs_extdelta_t *delta);
166
167
168
169
170
171STATIC int
172xfs_bmap_alloc(
173 xfs_bmalloca_t *ap);
174
175
176
177
178
179
180
181STATIC int
182xfs_bmap_btree_to_extents(
183 xfs_trans_t *tp,
184 xfs_inode_t *ip,
185 xfs_btree_cur_t *cur,
186 int *logflagsp,
187 int whichfork);
188
189
190
191
192
193STATIC int
194xfs_bmap_del_extent(
195 xfs_inode_t *ip,
196 xfs_trans_t *tp,
197 xfs_extnum_t idx,
198 xfs_bmap_free_t *flist,
199 xfs_btree_cur_t *cur,
200 xfs_bmbt_irec_t *new,
201 int *logflagsp,
202 xfs_extdelta_t *delta,
203 int whichfork,
204 int rsvd);
205
206
207
208
209
210STATIC void
211xfs_bmap_del_free(
212 xfs_bmap_free_t *flist,
213 xfs_bmap_free_item_t *prev,
214 xfs_bmap_free_item_t *free);
215
216
217
218
219
220STATIC int
221xfs_bmap_extents_to_btree(
222 xfs_trans_t *tp,
223 xfs_inode_t *ip,
224 xfs_fsblock_t *firstblock,
225 xfs_bmap_free_t *flist,
226 xfs_btree_cur_t **curp,
227 int wasdel,
228 int *logflagsp,
229 int whichfork);
230
231
232
233
234
235
236STATIC int
237xfs_bmap_local_to_extents(
238 xfs_trans_t *tp,
239 xfs_inode_t *ip,
240 xfs_fsblock_t *firstblock,
241 xfs_extlen_t total,
242 int *logflagsp,
243 int whichfork);
244
245
246
247
248
249
250
251
252STATIC xfs_bmbt_rec_host_t *
253xfs_bmap_search_extents(
254 xfs_inode_t *ip,
255 xfs_fileoff_t bno,
256 int whichfork,
257 int *eofp,
258 xfs_extnum_t *lastxp,
259 xfs_bmbt_irec_t *gotp,
260 xfs_bmbt_irec_t *prevp);
261
262
263
264
265
266
267
268STATIC int
269xfs_bmap_isaeof(
270 xfs_inode_t *ip,
271 xfs_fileoff_t off,
272 int whichfork,
273 char *aeof);
274
275#ifdef XFS_BMAP_TRACE
276
277
278
279STATIC void
280xfs_bmap_trace_delete(
281 const char *fname,
282 char *desc,
283 xfs_inode_t *ip,
284 xfs_extnum_t idx,
285 xfs_extnum_t cnt,
286 int whichfork);
287
288
289
290
291
292STATIC void
293xfs_bmap_trace_insert(
294 const char *fname,
295 char *desc,
296 xfs_inode_t *ip,
297 xfs_extnum_t idx,
298 xfs_extnum_t cnt,
299 xfs_bmbt_irec_t *r1,
300 xfs_bmbt_irec_t *r2,
301 int whichfork);
302
303
304
305
306STATIC void
307xfs_bmap_trace_post_update(
308 const char *fname,
309 char *desc,
310 xfs_inode_t *ip,
311 xfs_extnum_t idx,
312 int whichfork);
313
314
315
316
317STATIC void
318xfs_bmap_trace_pre_update(
319 const char *fname,
320 char *desc,
321 xfs_inode_t *ip,
322 xfs_extnum_t idx,
323 int whichfork);
324
325#define XFS_BMAP_TRACE_DELETE(d,ip,i,c,w) \
326 xfs_bmap_trace_delete(__func__,d,ip,i,c,w)
327#define XFS_BMAP_TRACE_INSERT(d,ip,i,c,r1,r2,w) \
328 xfs_bmap_trace_insert(__func__,d,ip,i,c,r1,r2,w)
329#define XFS_BMAP_TRACE_POST_UPDATE(d,ip,i,w) \
330 xfs_bmap_trace_post_update(__func__,d,ip,i,w)
331#define XFS_BMAP_TRACE_PRE_UPDATE(d,ip,i,w) \
332 xfs_bmap_trace_pre_update(__func__,d,ip,i,w)
333#else
334#define XFS_BMAP_TRACE_DELETE(d,ip,i,c,w)
335#define XFS_BMAP_TRACE_INSERT(d,ip,i,c,r1,r2,w)
336#define XFS_BMAP_TRACE_POST_UPDATE(d,ip,i,w)
337#define XFS_BMAP_TRACE_PRE_UPDATE(d,ip,i,w)
338#endif
339
340
341
342
343
344STATIC xfs_filblks_t
345xfs_bmap_worst_indlen(
346 xfs_inode_t *ip,
347 xfs_filblks_t len);
348
349#ifdef DEBUG
350
351
352
353
354STATIC void
355xfs_bmap_validate_ret(
356 xfs_fileoff_t bno,
357 xfs_filblks_t len,
358 int flags,
359 xfs_bmbt_irec_t *mval,
360 int nmap,
361 int ret_nmap);
362#else
363#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap)
364#endif
365
366#if defined(XFS_RW_TRACE)
367STATIC void
368xfs_bunmap_trace(
369 xfs_inode_t *ip,
370 xfs_fileoff_t bno,
371 xfs_filblks_t len,
372 int flags,
373 inst_t *ra);
374#else
375#define xfs_bunmap_trace(ip, bno, len, flags, ra)
376#endif
377
378STATIC int
379xfs_bmap_count_tree(
380 xfs_mount_t *mp,
381 xfs_trans_t *tp,
382 xfs_ifork_t *ifp,
383 xfs_fsblock_t blockno,
384 int levelin,
385 int *count);
386
387STATIC void
388xfs_bmap_count_leaves(
389 xfs_ifork_t *ifp,
390 xfs_extnum_t idx,
391 int numrecs,
392 int *count);
393
394STATIC void
395xfs_bmap_disk_count_leaves(
396 struct xfs_mount *mp,
397 struct xfs_btree_block *block,
398 int numrecs,
399 int *count);
400
401
402
403
404
405STATIC int
406xfs_bmbt_lookup_eq(
407 struct xfs_btree_cur *cur,
408 xfs_fileoff_t off,
409 xfs_fsblock_t bno,
410 xfs_filblks_t len,
411 int *stat)
412{
413 cur->bc_rec.b.br_startoff = off;
414 cur->bc_rec.b.br_startblock = bno;
415 cur->bc_rec.b.br_blockcount = len;
416 return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat);
417}
418
419STATIC int
420xfs_bmbt_lookup_ge(
421 struct xfs_btree_cur *cur,
422 xfs_fileoff_t off,
423 xfs_fsblock_t bno,
424 xfs_filblks_t len,
425 int *stat)
426{
427 cur->bc_rec.b.br_startoff = off;
428 cur->bc_rec.b.br_startblock = bno;
429 cur->bc_rec.b.br_blockcount = len;
430 return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat);
431}
432
433
434
435
436
437
438STATIC int
439xfs_bmbt_update(
440 struct xfs_btree_cur *cur,
441 xfs_fileoff_t off,
442 xfs_fsblock_t bno,
443 xfs_filblks_t len,
444 xfs_exntst_t state)
445{
446 union xfs_btree_rec rec;
447
448 xfs_bmbt_disk_set_allf(&rec.bmbt, off, bno, len, state);
449 return xfs_btree_update(cur, &rec);
450}
451
452
453
454
455STATIC int
456xfs_bmap_add_attrfork_btree(
457 xfs_trans_t *tp,
458 xfs_inode_t *ip,
459 xfs_fsblock_t *firstblock,
460 xfs_bmap_free_t *flist,
461 int *flags)
462{
463 xfs_btree_cur_t *cur;
464 int error;
465 xfs_mount_t *mp;
466 int stat;
467
468 mp = ip->i_mount;
469 if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip))
470 *flags |= XFS_ILOG_DBROOT;
471 else {
472 cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK);
473 cur->bc_private.b.flist = flist;
474 cur->bc_private.b.firstblock = *firstblock;
475 if ((error = xfs_bmbt_lookup_ge(cur, 0, 0, 0, &stat)))
476 goto error0;
477
478 XFS_WANT_CORRUPTED_GOTO(stat == 1, error0);
479 if ((error = xfs_btree_new_iroot(cur, flags, &stat)))
480 goto error0;
481 if (stat == 0) {
482 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
483 return XFS_ERROR(ENOSPC);
484 }
485 *firstblock = cur->bc_private.b.firstblock;
486 cur->bc_private.b.allocated = 0;
487 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
488 }
489 return 0;
490error0:
491 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
492 return error;
493}
494
495
496
497
498STATIC int
499xfs_bmap_add_attrfork_extents(
500 xfs_trans_t *tp,
501 xfs_inode_t *ip,
502 xfs_fsblock_t *firstblock,
503 xfs_bmap_free_t *flist,
504 int *flags)
505{
506 xfs_btree_cur_t *cur;
507 int error;
508
509 if (ip->i_d.di_nextents * sizeof(xfs_bmbt_rec_t) <= XFS_IFORK_DSIZE(ip))
510 return 0;
511 cur = NULL;
512 error = xfs_bmap_extents_to_btree(tp, ip, firstblock, flist, &cur, 0,
513 flags, XFS_DATA_FORK);
514 if (cur) {
515 cur->bc_private.b.allocated = 0;
516 xfs_btree_del_cursor(cur,
517 error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
518 }
519 return error;
520}
521
522
523
524
525STATIC int
526xfs_bmap_add_attrfork_local(
527 xfs_trans_t *tp,
528 xfs_inode_t *ip,
529 xfs_fsblock_t *firstblock,
530 xfs_bmap_free_t *flist,
531 int *flags)
532{
533 xfs_da_args_t dargs;
534 int error;
535 xfs_mount_t *mp;
536
537 if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip))
538 return 0;
539 if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) {
540 mp = ip->i_mount;
541 memset(&dargs, 0, sizeof(dargs));
542 dargs.dp = ip;
543 dargs.firstblock = firstblock;
544 dargs.flist = flist;
545 dargs.total = mp->m_dirblkfsbs;
546 dargs.whichfork = XFS_DATA_FORK;
547 dargs.trans = tp;
548 error = xfs_dir2_sf_to_block(&dargs);
549 } else
550 error = xfs_bmap_local_to_extents(tp, ip, firstblock, 1, flags,
551 XFS_DATA_FORK);
552 return error;
553}
554
555
556
557
558
559STATIC int
560xfs_bmap_add_extent(
561 xfs_inode_t *ip,
562 xfs_extnum_t idx,
563 xfs_btree_cur_t **curp,
564 xfs_bmbt_irec_t *new,
565 xfs_fsblock_t *first,
566 xfs_bmap_free_t *flist,
567 int *logflagsp,
568 xfs_extdelta_t *delta,
569 int whichfork,
570 int rsvd)
571{
572 xfs_btree_cur_t *cur;
573 xfs_filblks_t da_new;
574 xfs_filblks_t da_old;
575 int error;
576 xfs_ifork_t *ifp;
577 int logflags;
578 xfs_extnum_t nextents;
579
580 XFS_STATS_INC(xs_add_exlist);
581 cur = *curp;
582 ifp = XFS_IFORK_PTR(ip, whichfork);
583 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
584 ASSERT(idx <= nextents);
585 da_old = da_new = 0;
586 error = 0;
587
588
589
590
591
592 if (nextents == 0) {
593 XFS_BMAP_TRACE_INSERT("insert empty", ip, 0, 1, new, NULL,
594 whichfork);
595 xfs_iext_insert(ifp, 0, 1, new);
596 ASSERT(cur == NULL);
597 ifp->if_lastex = 0;
598 if (!isnullstartblock(new->br_startblock)) {
599 XFS_IFORK_NEXT_SET(ip, whichfork, 1);
600 logflags = XFS_ILOG_CORE | xfs_ilog_fext(whichfork);
601 } else
602 logflags = 0;
603
604 if (delta) {
605 if (delta->xed_startoff > new->br_startoff)
606 delta->xed_startoff = new->br_startoff;
607 if (delta->xed_blockcount <
608 new->br_startoff + new->br_blockcount)
609 delta->xed_blockcount = new->br_startoff +
610 new->br_blockcount;
611 }
612 }
613
614
615
616 else if (isnullstartblock(new->br_startblock)) {
617 if (cur)
618 ASSERT((cur->bc_private.b.flags &
619 XFS_BTCUR_BPRV_WASDEL) == 0);
620 if ((error = xfs_bmap_add_extent_hole_delay(ip, idx, new,
621 &logflags, delta, rsvd)))
622 goto done;
623 }
624
625
626
627 else if (idx == nextents) {
628 if (cur)
629 ASSERT((cur->bc_private.b.flags &
630 XFS_BTCUR_BPRV_WASDEL) == 0);
631 if ((error = xfs_bmap_add_extent_hole_real(ip, idx, cur, new,
632 &logflags, delta, whichfork)))
633 goto done;
634 } else {
635 xfs_bmbt_irec_t prev;
636
637
638
639
640 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &prev);
641
642
643
644
645
646
647 if (!isnullstartblock(new->br_startblock) &&
648 new->br_startoff + new->br_blockcount > prev.br_startoff) {
649 if (prev.br_state != XFS_EXT_UNWRITTEN &&
650 isnullstartblock(prev.br_startblock)) {
651 da_old = startblockval(prev.br_startblock);
652 if (cur)
653 ASSERT(cur->bc_private.b.flags &
654 XFS_BTCUR_BPRV_WASDEL);
655 if ((error = xfs_bmap_add_extent_delay_real(ip,
656 idx, &cur, new, &da_new, first, flist,
657 &logflags, delta, rsvd)))
658 goto done;
659 } else if (new->br_state == XFS_EXT_NORM) {
660 ASSERT(new->br_state == XFS_EXT_NORM);
661 if ((error = xfs_bmap_add_extent_unwritten_real(
662 ip, idx, &cur, new, &logflags, delta)))
663 goto done;
664 } else {
665 ASSERT(new->br_state == XFS_EXT_UNWRITTEN);
666 if ((error = xfs_bmap_add_extent_unwritten_real(
667 ip, idx, &cur, new, &logflags, delta)))
668 goto done;
669 }
670 ASSERT(*curp == cur || *curp == NULL);
671 }
672
673
674
675 else {
676 if (cur)
677 ASSERT((cur->bc_private.b.flags &
678 XFS_BTCUR_BPRV_WASDEL) == 0);
679 if ((error = xfs_bmap_add_extent_hole_real(ip, idx, cur,
680 new, &logflags, delta, whichfork)))
681 goto done;
682 }
683 }
684
685 ASSERT(*curp == cur || *curp == NULL);
686
687
688
689 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS &&
690 XFS_IFORK_NEXTENTS(ip, whichfork) > ifp->if_ext_max) {
691 int tmp_logflags;
692
693 ASSERT(cur == NULL);
694 error = xfs_bmap_extents_to_btree(ip->i_transp, ip, first,
695 flist, &cur, da_old > 0, &tmp_logflags, whichfork);
696 logflags |= tmp_logflags;
697 if (error)
698 goto done;
699 }
700
701
702
703
704 if (da_old || da_new) {
705 xfs_filblks_t nblks;
706
707 nblks = da_new;
708 if (cur)
709 nblks += cur->bc_private.b.allocated;
710 ASSERT(nblks <= da_old);
711 if (nblks < da_old)
712 xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS,
713 (int64_t)(da_old - nblks), rsvd);
714 }
715
716
717
718 if (cur) {
719 cur->bc_private.b.allocated = 0;
720 *curp = cur;
721 }
722done:
723#ifdef DEBUG
724 if (!error)
725 xfs_bmap_check_leaf_extents(*curp, ip, whichfork);
726#endif
727 *logflagsp = logflags;
728 return error;
729}
730
731
732
733
734
735STATIC int
736xfs_bmap_add_extent_delay_real(
737 xfs_inode_t *ip,
738 xfs_extnum_t idx,
739 xfs_btree_cur_t **curp,
740 xfs_bmbt_irec_t *new,
741 xfs_filblks_t *dnew,
742 xfs_fsblock_t *first,
743 xfs_bmap_free_t *flist,
744 int *logflagsp,
745 xfs_extdelta_t *delta,
746 int rsvd)
747{
748 xfs_btree_cur_t *cur;
749 int diff;
750 xfs_bmbt_rec_host_t *ep;
751 int error;
752 int i;
753 xfs_ifork_t *ifp;
754 xfs_fileoff_t new_endoff;
755 xfs_bmbt_irec_t r[3];
756
757 int rval=0;
758 int state = 0;
759 xfs_filblks_t temp=0;
760 xfs_filblks_t temp2=0;
761 int tmp_rval;
762 enum {
763 LEFT_CONTIG, RIGHT_CONTIG,
764 LEFT_FILLING, RIGHT_FILLING,
765 LEFT_DELAY, RIGHT_DELAY,
766 LEFT_VALID, RIGHT_VALID
767 };
768
769#define LEFT r[0]
770#define RIGHT r[1]
771#define PREV r[2]
772#define MASK(b) (1 << (b))
773#define MASK2(a,b) (MASK(a) | MASK(b))
774#define MASK3(a,b,c) (MASK2(a,b) | MASK(c))
775#define MASK4(a,b,c,d) (MASK3(a,b,c) | MASK(d))
776#define STATE_SET(b,v) ((v) ? (state |= MASK(b)) : (state &= ~MASK(b)))
777#define STATE_TEST(b) (state & MASK(b))
778#define STATE_SET_TEST(b,v) ((v) ? ((state |= MASK(b)), 1) : \
779 ((state &= ~MASK(b)), 0))
780#define SWITCH_STATE \
781 (state & MASK4(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG))
782
783
784
785
786 cur = *curp;
787 ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
788 ep = xfs_iext_get_ext(ifp, idx);
789 xfs_bmbt_get_all(ep, &PREV);
790 new_endoff = new->br_startoff + new->br_blockcount;
791 ASSERT(PREV.br_startoff <= new->br_startoff);
792 ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff);
793
794
795
796
797 STATE_SET(LEFT_FILLING, PREV.br_startoff == new->br_startoff);
798 STATE_SET(RIGHT_FILLING,
799 PREV.br_startoff + PREV.br_blockcount == new_endoff);
800
801
802
803
804 if (STATE_SET_TEST(LEFT_VALID, idx > 0)) {
805 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &LEFT);
806 STATE_SET(LEFT_DELAY, isnullstartblock(LEFT.br_startblock));
807 }
808 STATE_SET(LEFT_CONTIG,
809 STATE_TEST(LEFT_VALID) && !STATE_TEST(LEFT_DELAY) &&
810 LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff &&
811 LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock &&
812 LEFT.br_state == new->br_state &&
813 LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN);
814
815
816
817
818
819 if (STATE_SET_TEST(RIGHT_VALID,
820 idx <
821 ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t) - 1)) {
822 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx + 1), &RIGHT);
823 STATE_SET(RIGHT_DELAY, isnullstartblock(RIGHT.br_startblock));
824 }
825 STATE_SET(RIGHT_CONTIG,
826 STATE_TEST(RIGHT_VALID) && !STATE_TEST(RIGHT_DELAY) &&
827 new_endoff == RIGHT.br_startoff &&
828 new->br_startblock + new->br_blockcount ==
829 RIGHT.br_startblock &&
830 new->br_state == RIGHT.br_state &&
831 new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN &&
832 ((state & MASK3(LEFT_CONTIG, LEFT_FILLING, RIGHT_FILLING)) !=
833 MASK3(LEFT_CONTIG, LEFT_FILLING, RIGHT_FILLING) ||
834 LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount
835 <= MAXEXTLEN));
836 error = 0;
837
838
839
840 switch (SWITCH_STATE) {
841
842 case MASK4(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG):
843
844
845
846
847 XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|LC|RC", ip, idx - 1,
848 XFS_DATA_FORK);
849 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1),
850 LEFT.br_blockcount + PREV.br_blockcount +
851 RIGHT.br_blockcount);
852 XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC|RC", ip, idx - 1,
853 XFS_DATA_FORK);
854 XFS_BMAP_TRACE_DELETE("LF|RF|LC|RC", ip, idx, 2, XFS_DATA_FORK);
855 xfs_iext_remove(ifp, idx, 2);
856 ip->i_df.if_lastex = idx - 1;
857 ip->i_d.di_nextents--;
858 if (cur == NULL)
859 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
860 else {
861 rval = XFS_ILOG_CORE;
862 if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff,
863 RIGHT.br_startblock,
864 RIGHT.br_blockcount, &i)))
865 goto done;
866 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
867 if ((error = xfs_btree_delete(cur, &i)))
868 goto done;
869 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
870 if ((error = xfs_btree_decrement(cur, 0, &i)))
871 goto done;
872 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
873 if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
874 LEFT.br_startblock,
875 LEFT.br_blockcount +
876 PREV.br_blockcount +
877 RIGHT.br_blockcount, LEFT.br_state)))
878 goto done;
879 }
880 *dnew = 0;
881
882 temp = LEFT.br_startoff;
883 temp2 = LEFT.br_blockcount +
884 PREV.br_blockcount +
885 RIGHT.br_blockcount;
886 break;
887
888 case MASK3(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG):
889
890
891
892
893 XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|LC", ip, idx - 1,
894 XFS_DATA_FORK);
895 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1),
896 LEFT.br_blockcount + PREV.br_blockcount);
897 XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC", ip, idx - 1,
898 XFS_DATA_FORK);
899 ip->i_df.if_lastex = idx - 1;
900 XFS_BMAP_TRACE_DELETE("LF|RF|LC", ip, idx, 1, XFS_DATA_FORK);
901 xfs_iext_remove(ifp, idx, 1);
902 if (cur == NULL)
903 rval = XFS_ILOG_DEXT;
904 else {
905 rval = 0;
906 if ((error = xfs_bmbt_lookup_eq(cur, LEFT.br_startoff,
907 LEFT.br_startblock, LEFT.br_blockcount,
908 &i)))
909 goto done;
910 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
911 if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
912 LEFT.br_startblock,
913 LEFT.br_blockcount +
914 PREV.br_blockcount, LEFT.br_state)))
915 goto done;
916 }
917 *dnew = 0;
918
919 temp = LEFT.br_startoff;
920 temp2 = LEFT.br_blockcount +
921 PREV.br_blockcount;
922 break;
923
924 case MASK3(LEFT_FILLING, RIGHT_FILLING, RIGHT_CONTIG):
925
926
927
928
929 XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|RC", ip, idx, XFS_DATA_FORK);
930 xfs_bmbt_set_startblock(ep, new->br_startblock);
931 xfs_bmbt_set_blockcount(ep,
932 PREV.br_blockcount + RIGHT.br_blockcount);
933 XFS_BMAP_TRACE_POST_UPDATE("LF|RF|RC", ip, idx, XFS_DATA_FORK);
934 ip->i_df.if_lastex = idx;
935 XFS_BMAP_TRACE_DELETE("LF|RF|RC", ip, idx + 1, 1, XFS_DATA_FORK);
936 xfs_iext_remove(ifp, idx + 1, 1);
937 if (cur == NULL)
938 rval = XFS_ILOG_DEXT;
939 else {
940 rval = 0;
941 if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff,
942 RIGHT.br_startblock,
943 RIGHT.br_blockcount, &i)))
944 goto done;
945 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
946 if ((error = xfs_bmbt_update(cur, PREV.br_startoff,
947 new->br_startblock,
948 PREV.br_blockcount +
949 RIGHT.br_blockcount, PREV.br_state)))
950 goto done;
951 }
952 *dnew = 0;
953
954 temp = PREV.br_startoff;
955 temp2 = PREV.br_blockcount +
956 RIGHT.br_blockcount;
957 break;
958
959 case MASK2(LEFT_FILLING, RIGHT_FILLING):
960
961
962
963
964
965 XFS_BMAP_TRACE_PRE_UPDATE("LF|RF", ip, idx, XFS_DATA_FORK);
966 xfs_bmbt_set_startblock(ep, new->br_startblock);
967 XFS_BMAP_TRACE_POST_UPDATE("LF|RF", ip, idx, XFS_DATA_FORK);
968 ip->i_df.if_lastex = idx;
969 ip->i_d.di_nextents++;
970 if (cur == NULL)
971 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
972 else {
973 rval = XFS_ILOG_CORE;
974 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
975 new->br_startblock, new->br_blockcount,
976 &i)))
977 goto done;
978 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
979 cur->bc_rec.b.br_state = XFS_EXT_NORM;
980 if ((error = xfs_btree_insert(cur, &i)))
981 goto done;
982 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
983 }
984 *dnew = 0;
985
986 temp = new->br_startoff;
987 temp2 = new->br_blockcount;
988 break;
989
990 case MASK2(LEFT_FILLING, LEFT_CONTIG):
991
992
993
994
995 XFS_BMAP_TRACE_PRE_UPDATE("LF|LC", ip, idx - 1, XFS_DATA_FORK);
996 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1),
997 LEFT.br_blockcount + new->br_blockcount);
998 xfs_bmbt_set_startoff(ep,
999 PREV.br_startoff + new->br_blockcount);
1000 XFS_BMAP_TRACE_POST_UPDATE("LF|LC", ip, idx - 1, XFS_DATA_FORK);
1001 temp = PREV.br_blockcount - new->br_blockcount;
1002 XFS_BMAP_TRACE_PRE_UPDATE("LF|LC", ip, idx, XFS_DATA_FORK);
1003 xfs_bmbt_set_blockcount(ep, temp);
1004 ip->i_df.if_lastex = idx - 1;
1005 if (cur == NULL)
1006 rval = XFS_ILOG_DEXT;
1007 else {
1008 rval = 0;
1009 if ((error = xfs_bmbt_lookup_eq(cur, LEFT.br_startoff,
1010 LEFT.br_startblock, LEFT.br_blockcount,
1011 &i)))
1012 goto done;
1013 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1014 if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
1015 LEFT.br_startblock,
1016 LEFT.br_blockcount +
1017 new->br_blockcount,
1018 LEFT.br_state)))
1019 goto done;
1020 }
1021 temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
1022 startblockval(PREV.br_startblock));
1023 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
1024 XFS_BMAP_TRACE_POST_UPDATE("LF|LC", ip, idx, XFS_DATA_FORK);
1025 *dnew = temp;
1026
1027 temp = LEFT.br_startoff;
1028 temp2 = LEFT.br_blockcount +
1029 PREV.br_blockcount;
1030 break;
1031
1032 case MASK(LEFT_FILLING):
1033
1034
1035
1036
1037 XFS_BMAP_TRACE_PRE_UPDATE("LF", ip, idx, XFS_DATA_FORK);
1038 xfs_bmbt_set_startoff(ep, new_endoff);
1039 temp = PREV.br_blockcount - new->br_blockcount;
1040 xfs_bmbt_set_blockcount(ep, temp);
1041 XFS_BMAP_TRACE_INSERT("LF", ip, idx, 1, new, NULL,
1042 XFS_DATA_FORK);
1043 xfs_iext_insert(ifp, idx, 1, new);
1044 ip->i_df.if_lastex = idx;
1045 ip->i_d.di_nextents++;
1046 if (cur == NULL)
1047 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1048 else {
1049 rval = XFS_ILOG_CORE;
1050 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
1051 new->br_startblock, new->br_blockcount,
1052 &i)))
1053 goto done;
1054 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
1055 cur->bc_rec.b.br_state = XFS_EXT_NORM;
1056 if ((error = xfs_btree_insert(cur, &i)))
1057 goto done;
1058 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1059 }
1060 if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
1061 ip->i_d.di_nextents > ip->i_df.if_ext_max) {
1062 error = xfs_bmap_extents_to_btree(ip->i_transp, ip,
1063 first, flist, &cur, 1, &tmp_rval,
1064 XFS_DATA_FORK);
1065 rval |= tmp_rval;
1066 if (error)
1067 goto done;
1068 }
1069 temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
1070 startblockval(PREV.br_startblock) -
1071 (cur ? cur->bc_private.b.allocated : 0));
1072 ep = xfs_iext_get_ext(ifp, idx + 1);
1073 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
1074 XFS_BMAP_TRACE_POST_UPDATE("LF", ip, idx + 1, XFS_DATA_FORK);
1075 *dnew = temp;
1076
1077 temp = PREV.br_startoff;
1078 temp2 = PREV.br_blockcount;
1079 break;
1080
1081 case MASK2(RIGHT_FILLING, RIGHT_CONTIG):
1082
1083
1084
1085
1086 temp = PREV.br_blockcount - new->br_blockcount;
1087 XFS_BMAP_TRACE_PRE_UPDATE("RF|RC", ip, idx, XFS_DATA_FORK);
1088 XFS_BMAP_TRACE_PRE_UPDATE("RF|RC", ip, idx + 1, XFS_DATA_FORK);
1089 xfs_bmbt_set_blockcount(ep, temp);
1090 xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, idx + 1),
1091 new->br_startoff, new->br_startblock,
1092 new->br_blockcount + RIGHT.br_blockcount,
1093 RIGHT.br_state);
1094 XFS_BMAP_TRACE_POST_UPDATE("RF|RC", ip, idx + 1, XFS_DATA_FORK);
1095 ip->i_df.if_lastex = idx + 1;
1096 if (cur == NULL)
1097 rval = XFS_ILOG_DEXT;
1098 else {
1099 rval = 0;
1100 if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff,
1101 RIGHT.br_startblock,
1102 RIGHT.br_blockcount, &i)))
1103 goto done;
1104 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1105 if ((error = xfs_bmbt_update(cur, new->br_startoff,
1106 new->br_startblock,
1107 new->br_blockcount +
1108 RIGHT.br_blockcount,
1109 RIGHT.br_state)))
1110 goto done;
1111 }
1112 temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
1113 startblockval(PREV.br_startblock));
1114 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
1115 XFS_BMAP_TRACE_POST_UPDATE("RF|RC", ip, idx, XFS_DATA_FORK);
1116 *dnew = temp;
1117
1118 temp = PREV.br_startoff;
1119 temp2 = PREV.br_blockcount +
1120 RIGHT.br_blockcount;
1121 break;
1122
1123 case MASK(RIGHT_FILLING):
1124
1125
1126
1127
1128 temp = PREV.br_blockcount - new->br_blockcount;
1129 XFS_BMAP_TRACE_PRE_UPDATE("RF", ip, idx, XFS_DATA_FORK);
1130 xfs_bmbt_set_blockcount(ep, temp);
1131 XFS_BMAP_TRACE_INSERT("RF", ip, idx + 1, 1, new, NULL,
1132 XFS_DATA_FORK);
1133 xfs_iext_insert(ifp, idx + 1, 1, new);
1134 ip->i_df.if_lastex = idx + 1;
1135 ip->i_d.di_nextents++;
1136 if (cur == NULL)
1137 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1138 else {
1139 rval = XFS_ILOG_CORE;
1140 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
1141 new->br_startblock, new->br_blockcount,
1142 &i)))
1143 goto done;
1144 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
1145 cur->bc_rec.b.br_state = XFS_EXT_NORM;
1146 if ((error = xfs_btree_insert(cur, &i)))
1147 goto done;
1148 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1149 }
1150 if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
1151 ip->i_d.di_nextents > ip->i_df.if_ext_max) {
1152 error = xfs_bmap_extents_to_btree(ip->i_transp, ip,
1153 first, flist, &cur, 1, &tmp_rval,
1154 XFS_DATA_FORK);
1155 rval |= tmp_rval;
1156 if (error)
1157 goto done;
1158 }
1159 temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
1160 startblockval(PREV.br_startblock) -
1161 (cur ? cur->bc_private.b.allocated : 0));
1162 ep = xfs_iext_get_ext(ifp, idx);
1163 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
1164 XFS_BMAP_TRACE_POST_UPDATE("RF", ip, idx, XFS_DATA_FORK);
1165 *dnew = temp;
1166
1167 temp = PREV.br_startoff;
1168 temp2 = PREV.br_blockcount;
1169 break;
1170
1171 case 0:
1172
1173
1174
1175
1176
1177 temp = new->br_startoff - PREV.br_startoff;
1178 XFS_BMAP_TRACE_PRE_UPDATE("0", ip, idx, XFS_DATA_FORK);
1179 xfs_bmbt_set_blockcount(ep, temp);
1180 r[0] = *new;
1181 r[1].br_state = PREV.br_state;
1182 r[1].br_startblock = 0;
1183 r[1].br_startoff = new_endoff;
1184 temp2 = PREV.br_startoff + PREV.br_blockcount - new_endoff;
1185 r[1].br_blockcount = temp2;
1186 XFS_BMAP_TRACE_INSERT("0", ip, idx + 1, 2, &r[0], &r[1],
1187 XFS_DATA_FORK);
1188 xfs_iext_insert(ifp, idx + 1, 2, &r[0]);
1189 ip->i_df.if_lastex = idx + 1;
1190 ip->i_d.di_nextents++;
1191 if (cur == NULL)
1192 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1193 else {
1194 rval = XFS_ILOG_CORE;
1195 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
1196 new->br_startblock, new->br_blockcount,
1197 &i)))
1198 goto done;
1199 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
1200 cur->bc_rec.b.br_state = XFS_EXT_NORM;
1201 if ((error = xfs_btree_insert(cur, &i)))
1202 goto done;
1203 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1204 }
1205 if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
1206 ip->i_d.di_nextents > ip->i_df.if_ext_max) {
1207 error = xfs_bmap_extents_to_btree(ip->i_transp, ip,
1208 first, flist, &cur, 1, &tmp_rval,
1209 XFS_DATA_FORK);
1210 rval |= tmp_rval;
1211 if (error)
1212 goto done;
1213 }
1214 temp = xfs_bmap_worst_indlen(ip, temp);
1215 temp2 = xfs_bmap_worst_indlen(ip, temp2);
1216 diff = (int)(temp + temp2 - startblockval(PREV.br_startblock) -
1217 (cur ? cur->bc_private.b.allocated : 0));
1218 if (diff > 0 &&
1219 xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd)) {
1220
1221
1222
1223 ASSERT(0);
1224 while (diff > 0) {
1225 if (temp) {
1226 temp--;
1227 diff--;
1228 if (!diff ||
1229 !xfs_mod_incore_sb(ip->i_mount,
1230 XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd))
1231 break;
1232 }
1233 if (temp2) {
1234 temp2--;
1235 diff--;
1236 if (!diff ||
1237 !xfs_mod_incore_sb(ip->i_mount,
1238 XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd))
1239 break;
1240 }
1241 }
1242 }
1243 ep = xfs_iext_get_ext(ifp, idx);
1244 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
1245 XFS_BMAP_TRACE_POST_UPDATE("0", ip, idx, XFS_DATA_FORK);
1246 XFS_BMAP_TRACE_PRE_UPDATE("0", ip, idx + 2, XFS_DATA_FORK);
1247 xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, idx + 2),
1248 nullstartblock((int)temp2));
1249 XFS_BMAP_TRACE_POST_UPDATE("0", ip, idx + 2, XFS_DATA_FORK);
1250 *dnew = temp + temp2;
1251
1252 temp = PREV.br_startoff;
1253 temp2 = PREV.br_blockcount;
1254 break;
1255
1256 case MASK3(LEFT_FILLING, LEFT_CONTIG, RIGHT_CONTIG):
1257 case MASK3(RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG):
1258 case MASK2(LEFT_FILLING, RIGHT_CONTIG):
1259 case MASK2(RIGHT_FILLING, LEFT_CONTIG):
1260 case MASK2(LEFT_CONTIG, RIGHT_CONTIG):
1261 case MASK(LEFT_CONTIG):
1262 case MASK(RIGHT_CONTIG):
1263
1264
1265
1266 ASSERT(0);
1267 }
1268 *curp = cur;
1269 if (delta) {
1270 temp2 += temp;
1271 if (delta->xed_startoff > temp)
1272 delta->xed_startoff = temp;
1273 if (delta->xed_blockcount < temp2)
1274 delta->xed_blockcount = temp2;
1275 }
1276done:
1277 *logflagsp = rval;
1278 return error;
1279#undef LEFT
1280#undef RIGHT
1281#undef PREV
1282#undef MASK
1283#undef MASK2
1284#undef MASK3
1285#undef MASK4
1286#undef STATE_SET
1287#undef STATE_TEST
1288#undef STATE_SET_TEST
1289#undef SWITCH_STATE
1290}
1291
1292
1293
1294
1295
1296STATIC int
1297xfs_bmap_add_extent_unwritten_real(
1298 xfs_inode_t *ip,
1299 xfs_extnum_t idx,
1300 xfs_btree_cur_t **curp,
1301 xfs_bmbt_irec_t *new,
1302 int *logflagsp,
1303 xfs_extdelta_t *delta)
1304{
1305 xfs_btree_cur_t *cur;
1306 xfs_bmbt_rec_host_t *ep;
1307 int error;
1308 int i;
1309 xfs_ifork_t *ifp;
1310 xfs_fileoff_t new_endoff;
1311 xfs_exntst_t newext;
1312 xfs_exntst_t oldext;
1313 xfs_bmbt_irec_t r[3];
1314
1315 int rval=0;
1316 int state = 0;
1317 xfs_filblks_t temp=0;
1318 xfs_filblks_t temp2=0;
1319 enum {
1320 LEFT_CONTIG, RIGHT_CONTIG,
1321 LEFT_FILLING, RIGHT_FILLING,
1322 LEFT_DELAY, RIGHT_DELAY,
1323 LEFT_VALID, RIGHT_VALID
1324 };
1325
1326#define LEFT r[0]
1327#define RIGHT r[1]
1328#define PREV r[2]
1329#define MASK(b) (1 << (b))
1330#define MASK2(a,b) (MASK(a) | MASK(b))
1331#define MASK3(a,b,c) (MASK2(a,b) | MASK(c))
1332#define MASK4(a,b,c,d) (MASK3(a,b,c) | MASK(d))
1333#define STATE_SET(b,v) ((v) ? (state |= MASK(b)) : (state &= ~MASK(b)))
1334#define STATE_TEST(b) (state & MASK(b))
1335#define STATE_SET_TEST(b,v) ((v) ? ((state |= MASK(b)), 1) : \
1336 ((state &= ~MASK(b)), 0))
1337#define SWITCH_STATE \
1338 (state & MASK4(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG))
1339
1340
1341
1342
1343 error = 0;
1344 cur = *curp;
1345 ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
1346 ep = xfs_iext_get_ext(ifp, idx);
1347 xfs_bmbt_get_all(ep, &PREV);
1348 newext = new->br_state;
1349 oldext = (newext == XFS_EXT_UNWRITTEN) ?
1350 XFS_EXT_NORM : XFS_EXT_UNWRITTEN;
1351 ASSERT(PREV.br_state == oldext);
1352 new_endoff = new->br_startoff + new->br_blockcount;
1353 ASSERT(PREV.br_startoff <= new->br_startoff);
1354 ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff);
1355
1356
1357
1358
1359 STATE_SET(LEFT_FILLING, PREV.br_startoff == new->br_startoff);
1360 STATE_SET(RIGHT_FILLING,
1361 PREV.br_startoff + PREV.br_blockcount == new_endoff);
1362
1363
1364
1365
1366 if (STATE_SET_TEST(LEFT_VALID, idx > 0)) {
1367 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &LEFT);
1368 STATE_SET(LEFT_DELAY, isnullstartblock(LEFT.br_startblock));
1369 }
1370 STATE_SET(LEFT_CONTIG,
1371 STATE_TEST(LEFT_VALID) && !STATE_TEST(LEFT_DELAY) &&
1372 LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff &&
1373 LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock &&
1374 LEFT.br_state == newext &&
1375 LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN);
1376
1377
1378
1379
1380
1381 if (STATE_SET_TEST(RIGHT_VALID,
1382 idx <
1383 ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t) - 1)) {
1384 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx + 1), &RIGHT);
1385 STATE_SET(RIGHT_DELAY, isnullstartblock(RIGHT.br_startblock));
1386 }
1387 STATE_SET(RIGHT_CONTIG,
1388 STATE_TEST(RIGHT_VALID) && !STATE_TEST(RIGHT_DELAY) &&
1389 new_endoff == RIGHT.br_startoff &&
1390 new->br_startblock + new->br_blockcount ==
1391 RIGHT.br_startblock &&
1392 newext == RIGHT.br_state &&
1393 new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN &&
1394 ((state & MASK3(LEFT_CONTIG, LEFT_FILLING, RIGHT_FILLING)) !=
1395 MASK3(LEFT_CONTIG, LEFT_FILLING, RIGHT_FILLING) ||
1396 LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount
1397 <= MAXEXTLEN));
1398
1399
1400
1401 switch (SWITCH_STATE) {
1402
1403 case MASK4(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG):
1404
1405
1406
1407
1408 XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|LC|RC", ip, idx - 1,
1409 XFS_DATA_FORK);
1410 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1),
1411 LEFT.br_blockcount + PREV.br_blockcount +
1412 RIGHT.br_blockcount);
1413 XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC|RC", ip, idx - 1,
1414 XFS_DATA_FORK);
1415 XFS_BMAP_TRACE_DELETE("LF|RF|LC|RC", ip, idx, 2, XFS_DATA_FORK);
1416 xfs_iext_remove(ifp, idx, 2);
1417 ip->i_df.if_lastex = idx - 1;
1418 ip->i_d.di_nextents -= 2;
1419 if (cur == NULL)
1420 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1421 else {
1422 rval = XFS_ILOG_CORE;
1423 if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff,
1424 RIGHT.br_startblock,
1425 RIGHT.br_blockcount, &i)))
1426 goto done;
1427 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1428 if ((error = xfs_btree_delete(cur, &i)))
1429 goto done;
1430 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1431 if ((error = xfs_btree_decrement(cur, 0, &i)))
1432 goto done;
1433 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1434 if ((error = xfs_btree_delete(cur, &i)))
1435 goto done;
1436 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1437 if ((error = xfs_btree_decrement(cur, 0, &i)))
1438 goto done;
1439 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1440 if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
1441 LEFT.br_startblock,
1442 LEFT.br_blockcount + PREV.br_blockcount +
1443 RIGHT.br_blockcount, LEFT.br_state)))
1444 goto done;
1445 }
1446
1447 temp = LEFT.br_startoff;
1448 temp2 = LEFT.br_blockcount +
1449 PREV.br_blockcount +
1450 RIGHT.br_blockcount;
1451 break;
1452
1453 case MASK3(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG):
1454
1455
1456
1457
1458 XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|LC", ip, idx - 1,
1459 XFS_DATA_FORK);
1460 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1),
1461 LEFT.br_blockcount + PREV.br_blockcount);
1462 XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC", ip, idx - 1,
1463 XFS_DATA_FORK);
1464 ip->i_df.if_lastex = idx - 1;
1465 XFS_BMAP_TRACE_DELETE("LF|RF|LC", ip, idx, 1, XFS_DATA_FORK);
1466 xfs_iext_remove(ifp, idx, 1);
1467 ip->i_d.di_nextents--;
1468 if (cur == NULL)
1469 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1470 else {
1471 rval = XFS_ILOG_CORE;
1472 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1473 PREV.br_startblock, PREV.br_blockcount,
1474 &i)))
1475 goto done;
1476 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1477 if ((error = xfs_btree_delete(cur, &i)))
1478 goto done;
1479 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1480 if ((error = xfs_btree_decrement(cur, 0, &i)))
1481 goto done;
1482 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1483 if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
1484 LEFT.br_startblock,
1485 LEFT.br_blockcount + PREV.br_blockcount,
1486 LEFT.br_state)))
1487 goto done;
1488 }
1489
1490 temp = LEFT.br_startoff;
1491 temp2 = LEFT.br_blockcount +
1492 PREV.br_blockcount;
1493 break;
1494
1495 case MASK3(LEFT_FILLING, RIGHT_FILLING, RIGHT_CONTIG):
1496
1497
1498
1499
1500 XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|RC", ip, idx,
1501 XFS_DATA_FORK);
1502 xfs_bmbt_set_blockcount(ep,
1503 PREV.br_blockcount + RIGHT.br_blockcount);
1504 xfs_bmbt_set_state(ep, newext);
1505 XFS_BMAP_TRACE_POST_UPDATE("LF|RF|RC", ip, idx,
1506 XFS_DATA_FORK);
1507 ip->i_df.if_lastex = idx;
1508 XFS_BMAP_TRACE_DELETE("LF|RF|RC", ip, idx + 1, 1, XFS_DATA_FORK);
1509 xfs_iext_remove(ifp, idx + 1, 1);
1510 ip->i_d.di_nextents--;
1511 if (cur == NULL)
1512 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1513 else {
1514 rval = XFS_ILOG_CORE;
1515 if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff,
1516 RIGHT.br_startblock,
1517 RIGHT.br_blockcount, &i)))
1518 goto done;
1519 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1520 if ((error = xfs_btree_delete(cur, &i)))
1521 goto done;
1522 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1523 if ((error = xfs_btree_decrement(cur, 0, &i)))
1524 goto done;
1525 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1526 if ((error = xfs_bmbt_update(cur, new->br_startoff,
1527 new->br_startblock,
1528 new->br_blockcount + RIGHT.br_blockcount,
1529 newext)))
1530 goto done;
1531 }
1532
1533 temp = PREV.br_startoff;
1534 temp2 = PREV.br_blockcount +
1535 RIGHT.br_blockcount;
1536 break;
1537
1538 case MASK2(LEFT_FILLING, RIGHT_FILLING):
1539
1540
1541
1542
1543
1544 XFS_BMAP_TRACE_PRE_UPDATE("LF|RF", ip, idx,
1545 XFS_DATA_FORK);
1546 xfs_bmbt_set_state(ep, newext);
1547 XFS_BMAP_TRACE_POST_UPDATE("LF|RF", ip, idx,
1548 XFS_DATA_FORK);
1549 ip->i_df.if_lastex = idx;
1550 if (cur == NULL)
1551 rval = XFS_ILOG_DEXT;
1552 else {
1553 rval = 0;
1554 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
1555 new->br_startblock, new->br_blockcount,
1556 &i)))
1557 goto done;
1558 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1559 if ((error = xfs_bmbt_update(cur, new->br_startoff,
1560 new->br_startblock, new->br_blockcount,
1561 newext)))
1562 goto done;
1563 }
1564
1565 temp = new->br_startoff;
1566 temp2 = new->br_blockcount;
1567 break;
1568
1569 case MASK2(LEFT_FILLING, LEFT_CONTIG):
1570
1571
1572
1573
1574 XFS_BMAP_TRACE_PRE_UPDATE("LF|LC", ip, idx - 1,
1575 XFS_DATA_FORK);
1576 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1),
1577 LEFT.br_blockcount + new->br_blockcount);
1578 xfs_bmbt_set_startoff(ep,
1579 PREV.br_startoff + new->br_blockcount);
1580 XFS_BMAP_TRACE_POST_UPDATE("LF|LC", ip, idx - 1,
1581 XFS_DATA_FORK);
1582 XFS_BMAP_TRACE_PRE_UPDATE("LF|LC", ip, idx,
1583 XFS_DATA_FORK);
1584 xfs_bmbt_set_startblock(ep,
1585 new->br_startblock + new->br_blockcount);
1586 xfs_bmbt_set_blockcount(ep,
1587 PREV.br_blockcount - new->br_blockcount);
1588 XFS_BMAP_TRACE_POST_UPDATE("LF|LC", ip, idx,
1589 XFS_DATA_FORK);
1590 ip->i_df.if_lastex = idx - 1;
1591 if (cur == NULL)
1592 rval = XFS_ILOG_DEXT;
1593 else {
1594 rval = 0;
1595 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1596 PREV.br_startblock, PREV.br_blockcount,
1597 &i)))
1598 goto done;
1599 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1600 if ((error = xfs_bmbt_update(cur,
1601 PREV.br_startoff + new->br_blockcount,
1602 PREV.br_startblock + new->br_blockcount,
1603 PREV.br_blockcount - new->br_blockcount,
1604 oldext)))
1605 goto done;
1606 if ((error = xfs_btree_decrement(cur, 0, &i)))
1607 goto done;
1608 if (xfs_bmbt_update(cur, LEFT.br_startoff,
1609 LEFT.br_startblock,
1610 LEFT.br_blockcount + new->br_blockcount,
1611 LEFT.br_state))
1612 goto done;
1613 }
1614
1615 temp = LEFT.br_startoff;
1616 temp2 = LEFT.br_blockcount +
1617 PREV.br_blockcount;
1618 break;
1619
1620 case MASK(LEFT_FILLING):
1621
1622
1623
1624
1625 XFS_BMAP_TRACE_PRE_UPDATE("LF", ip, idx, XFS_DATA_FORK);
1626 ASSERT(ep && xfs_bmbt_get_state(ep) == oldext);
1627 xfs_bmbt_set_startoff(ep, new_endoff);
1628 xfs_bmbt_set_blockcount(ep,
1629 PREV.br_blockcount - new->br_blockcount);
1630 xfs_bmbt_set_startblock(ep,
1631 new->br_startblock + new->br_blockcount);
1632 XFS_BMAP_TRACE_POST_UPDATE("LF", ip, idx, XFS_DATA_FORK);
1633 XFS_BMAP_TRACE_INSERT("LF", ip, idx, 1, new, NULL,
1634 XFS_DATA_FORK);
1635 xfs_iext_insert(ifp, idx, 1, new);
1636 ip->i_df.if_lastex = idx;
1637 ip->i_d.di_nextents++;
1638 if (cur == NULL)
1639 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1640 else {
1641 rval = XFS_ILOG_CORE;
1642 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1643 PREV.br_startblock, PREV.br_blockcount,
1644 &i)))
1645 goto done;
1646 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1647 if ((error = xfs_bmbt_update(cur,
1648 PREV.br_startoff + new->br_blockcount,
1649 PREV.br_startblock + new->br_blockcount,
1650 PREV.br_blockcount - new->br_blockcount,
1651 oldext)))
1652 goto done;
1653 cur->bc_rec.b = *new;
1654 if ((error = xfs_btree_insert(cur, &i)))
1655 goto done;
1656 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1657 }
1658
1659 temp = PREV.br_startoff;
1660 temp2 = PREV.br_blockcount;
1661 break;
1662
1663 case MASK2(RIGHT_FILLING, RIGHT_CONTIG):
1664
1665
1666
1667
1668 XFS_BMAP_TRACE_PRE_UPDATE("RF|RC", ip, idx,
1669 XFS_DATA_FORK);
1670 XFS_BMAP_TRACE_PRE_UPDATE("RF|RC", ip, idx + 1,
1671 XFS_DATA_FORK);
1672 xfs_bmbt_set_blockcount(ep,
1673 PREV.br_blockcount - new->br_blockcount);
1674 XFS_BMAP_TRACE_POST_UPDATE("RF|RC", ip, idx,
1675 XFS_DATA_FORK);
1676 xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, idx + 1),
1677 new->br_startoff, new->br_startblock,
1678 new->br_blockcount + RIGHT.br_blockcount, newext);
1679 XFS_BMAP_TRACE_POST_UPDATE("RF|RC", ip, idx + 1,
1680 XFS_DATA_FORK);
1681 ip->i_df.if_lastex = idx + 1;
1682 if (cur == NULL)
1683 rval = XFS_ILOG_DEXT;
1684 else {
1685 rval = 0;
1686 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1687 PREV.br_startblock,
1688 PREV.br_blockcount, &i)))
1689 goto done;
1690 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1691 if ((error = xfs_bmbt_update(cur, PREV.br_startoff,
1692 PREV.br_startblock,
1693 PREV.br_blockcount - new->br_blockcount,
1694 oldext)))
1695 goto done;
1696 if ((error = xfs_btree_increment(cur, 0, &i)))
1697 goto done;
1698 if ((error = xfs_bmbt_update(cur, new->br_startoff,
1699 new->br_startblock,
1700 new->br_blockcount + RIGHT.br_blockcount,
1701 newext)))
1702 goto done;
1703 }
1704
1705 temp = PREV.br_startoff;
1706 temp2 = PREV.br_blockcount +
1707 RIGHT.br_blockcount;
1708 break;
1709
1710 case MASK(RIGHT_FILLING):
1711
1712
1713
1714
1715 XFS_BMAP_TRACE_PRE_UPDATE("RF", ip, idx, XFS_DATA_FORK);
1716 xfs_bmbt_set_blockcount(ep,
1717 PREV.br_blockcount - new->br_blockcount);
1718 XFS_BMAP_TRACE_POST_UPDATE("RF", ip, idx, XFS_DATA_FORK);
1719 XFS_BMAP_TRACE_INSERT("RF", ip, idx + 1, 1, new, NULL,
1720 XFS_DATA_FORK);
1721 xfs_iext_insert(ifp, idx + 1, 1, new);
1722 ip->i_df.if_lastex = idx + 1;
1723 ip->i_d.di_nextents++;
1724 if (cur == NULL)
1725 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1726 else {
1727 rval = XFS_ILOG_CORE;
1728 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1729 PREV.br_startblock, PREV.br_blockcount,
1730 &i)))
1731 goto done;
1732 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1733 if ((error = xfs_bmbt_update(cur, PREV.br_startoff,
1734 PREV.br_startblock,
1735 PREV.br_blockcount - new->br_blockcount,
1736 oldext)))
1737 goto done;
1738 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
1739 new->br_startblock, new->br_blockcount,
1740 &i)))
1741 goto done;
1742 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
1743 cur->bc_rec.b.br_state = XFS_EXT_NORM;
1744 if ((error = xfs_btree_insert(cur, &i)))
1745 goto done;
1746 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1747 }
1748
1749 temp = PREV.br_startoff;
1750 temp2 = PREV.br_blockcount;
1751 break;
1752
1753 case 0:
1754
1755
1756
1757
1758
1759 XFS_BMAP_TRACE_PRE_UPDATE("0", ip, idx, XFS_DATA_FORK);
1760 xfs_bmbt_set_blockcount(ep,
1761 new->br_startoff - PREV.br_startoff);
1762 XFS_BMAP_TRACE_POST_UPDATE("0", ip, idx, XFS_DATA_FORK);
1763 r[0] = *new;
1764 r[1].br_startoff = new_endoff;
1765 r[1].br_blockcount =
1766 PREV.br_startoff + PREV.br_blockcount - new_endoff;
1767 r[1].br_startblock = new->br_startblock + new->br_blockcount;
1768 r[1].br_state = oldext;
1769 XFS_BMAP_TRACE_INSERT("0", ip, idx + 1, 2, &r[0], &r[1],
1770 XFS_DATA_FORK);
1771 xfs_iext_insert(ifp, idx + 1, 2, &r[0]);
1772 ip->i_df.if_lastex = idx + 1;
1773 ip->i_d.di_nextents += 2;
1774 if (cur == NULL)
1775 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1776 else {
1777 rval = XFS_ILOG_CORE;
1778 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1779 PREV.br_startblock, PREV.br_blockcount,
1780 &i)))
1781 goto done;
1782 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1783
1784 if ((error = xfs_bmbt_update(cur, r[1].br_startoff,
1785 r[1].br_startblock, r[1].br_blockcount,
1786 r[1].br_state)))
1787 goto done;
1788
1789 cur->bc_rec.b = PREV;
1790 cur->bc_rec.b.br_blockcount =
1791 new->br_startoff - PREV.br_startoff;
1792 if ((error = xfs_btree_insert(cur, &i)))
1793 goto done;
1794 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1795
1796
1797
1798
1799
1800 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
1801 new->br_startblock, new->br_blockcount,
1802 &i)))
1803 goto done;
1804 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
1805
1806 cur->bc_rec.b.br_state = new->br_state;
1807 if ((error = xfs_btree_insert(cur, &i)))
1808 goto done;
1809 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1810 }
1811
1812 temp = PREV.br_startoff;
1813 temp2 = PREV.br_blockcount;
1814 break;
1815
1816 case MASK3(LEFT_FILLING, LEFT_CONTIG, RIGHT_CONTIG):
1817 case MASK3(RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG):
1818 case MASK2(LEFT_FILLING, RIGHT_CONTIG):
1819 case MASK2(RIGHT_FILLING, LEFT_CONTIG):
1820 case MASK2(LEFT_CONTIG, RIGHT_CONTIG):
1821 case MASK(LEFT_CONTIG):
1822 case MASK(RIGHT_CONTIG):
1823
1824
1825
1826 ASSERT(0);
1827 }
1828 *curp = cur;
1829 if (delta) {
1830 temp2 += temp;
1831 if (delta->xed_startoff > temp)
1832 delta->xed_startoff = temp;
1833 if (delta->xed_blockcount < temp2)
1834 delta->xed_blockcount = temp2;
1835 }
1836done:
1837 *logflagsp = rval;
1838 return error;
1839#undef LEFT
1840#undef RIGHT
1841#undef PREV
1842#undef MASK
1843#undef MASK2
1844#undef MASK3
1845#undef MASK4
1846#undef STATE_SET
1847#undef STATE_TEST
1848#undef STATE_SET_TEST
1849#undef SWITCH_STATE
1850}
1851
1852
1853
1854
1855
1856
1857STATIC int
1858xfs_bmap_add_extent_hole_delay(
1859 xfs_inode_t *ip,
1860 xfs_extnum_t idx,
1861 xfs_bmbt_irec_t *new,
1862 int *logflagsp,
1863 xfs_extdelta_t *delta,
1864 int rsvd)
1865{
1866 xfs_bmbt_rec_host_t *ep;
1867 xfs_ifork_t *ifp;
1868 xfs_bmbt_irec_t left;
1869 xfs_filblks_t newlen=0;
1870 xfs_filblks_t oldlen=0;
1871 xfs_bmbt_irec_t right;
1872 int state;
1873 xfs_filblks_t temp=0;
1874 xfs_filblks_t temp2=0;
1875 enum {
1876 LEFT_CONTIG, RIGHT_CONTIG,
1877 LEFT_DELAY, RIGHT_DELAY,
1878 LEFT_VALID, RIGHT_VALID
1879 };
1880
1881#define MASK(b) (1 << (b))
1882#define MASK2(a,b) (MASK(a) | MASK(b))
1883#define STATE_SET(b,v) ((v) ? (state |= MASK(b)) : (state &= ~MASK(b)))
1884#define STATE_TEST(b) (state & MASK(b))
1885#define STATE_SET_TEST(b,v) ((v) ? ((state |= MASK(b)), 1) : \
1886 ((state &= ~MASK(b)), 0))
1887#define SWITCH_STATE (state & MASK2(LEFT_CONTIG, RIGHT_CONTIG))
1888
1889 ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
1890 ep = xfs_iext_get_ext(ifp, idx);
1891 state = 0;
1892 ASSERT(isnullstartblock(new->br_startblock));
1893
1894
1895
1896 if (STATE_SET_TEST(LEFT_VALID, idx > 0)) {
1897 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &left);
1898 STATE_SET(LEFT_DELAY, isnullstartblock(left.br_startblock));
1899 }
1900
1901
1902
1903
1904 if (STATE_SET_TEST(RIGHT_VALID,
1905 idx <
1906 ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t))) {
1907 xfs_bmbt_get_all(ep, &right);
1908 STATE_SET(RIGHT_DELAY, isnullstartblock(right.br_startblock));
1909 }
1910
1911
1912
1913
1914 STATE_SET(LEFT_CONTIG,
1915 STATE_TEST(LEFT_VALID) && STATE_TEST(LEFT_DELAY) &&
1916 left.br_startoff + left.br_blockcount == new->br_startoff &&
1917 left.br_blockcount + new->br_blockcount <= MAXEXTLEN);
1918 STATE_SET(RIGHT_CONTIG,
1919 STATE_TEST(RIGHT_VALID) && STATE_TEST(RIGHT_DELAY) &&
1920 new->br_startoff + new->br_blockcount == right.br_startoff &&
1921 new->br_blockcount + right.br_blockcount <= MAXEXTLEN &&
1922 (!STATE_TEST(LEFT_CONTIG) ||
1923 (left.br_blockcount + new->br_blockcount +
1924 right.br_blockcount <= MAXEXTLEN)));
1925
1926
1927
1928 switch (SWITCH_STATE) {
1929
1930 case MASK2(LEFT_CONTIG, RIGHT_CONTIG):
1931
1932
1933
1934
1935
1936 temp = left.br_blockcount + new->br_blockcount +
1937 right.br_blockcount;
1938 XFS_BMAP_TRACE_PRE_UPDATE("LC|RC", ip, idx - 1,
1939 XFS_DATA_FORK);
1940 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), temp);
1941 oldlen = startblockval(left.br_startblock) +
1942 startblockval(new->br_startblock) +
1943 startblockval(right.br_startblock);
1944 newlen = xfs_bmap_worst_indlen(ip, temp);
1945 xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, idx - 1),
1946 nullstartblock((int)newlen));
1947 XFS_BMAP_TRACE_POST_UPDATE("LC|RC", ip, idx - 1,
1948 XFS_DATA_FORK);
1949 XFS_BMAP_TRACE_DELETE("LC|RC", ip, idx, 1, XFS_DATA_FORK);
1950 xfs_iext_remove(ifp, idx, 1);
1951 ip->i_df.if_lastex = idx - 1;
1952
1953 temp2 = temp;
1954 temp = left.br_startoff;
1955 break;
1956
1957 case MASK(LEFT_CONTIG):
1958
1959
1960
1961
1962
1963 temp = left.br_blockcount + new->br_blockcount;
1964 XFS_BMAP_TRACE_PRE_UPDATE("LC", ip, idx - 1,
1965 XFS_DATA_FORK);
1966 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), temp);
1967 oldlen = startblockval(left.br_startblock) +
1968 startblockval(new->br_startblock);
1969 newlen = xfs_bmap_worst_indlen(ip, temp);
1970 xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, idx - 1),
1971 nullstartblock((int)newlen));
1972 XFS_BMAP_TRACE_POST_UPDATE("LC", ip, idx - 1,
1973 XFS_DATA_FORK);
1974 ip->i_df.if_lastex = idx - 1;
1975
1976 temp2 = temp;
1977 temp = left.br_startoff;
1978 break;
1979
1980 case MASK(RIGHT_CONTIG):
1981
1982
1983
1984
1985
1986 XFS_BMAP_TRACE_PRE_UPDATE("RC", ip, idx, XFS_DATA_FORK);
1987 temp = new->br_blockcount + right.br_blockcount;
1988 oldlen = startblockval(new->br_startblock) +
1989 startblockval(right.br_startblock);
1990 newlen = xfs_bmap_worst_indlen(ip, temp);
1991 xfs_bmbt_set_allf(ep, new->br_startoff,
1992 nullstartblock((int)newlen), temp, right.br_state);
1993 XFS_BMAP_TRACE_POST_UPDATE("RC", ip, idx, XFS_DATA_FORK);
1994 ip->i_df.if_lastex = idx;
1995
1996 temp2 = temp;
1997 temp = new->br_startoff;
1998 break;
1999
2000 case 0:
2001
2002
2003
2004
2005
2006 oldlen = newlen = 0;
2007 XFS_BMAP_TRACE_INSERT("0", ip, idx, 1, new, NULL,
2008 XFS_DATA_FORK);
2009 xfs_iext_insert(ifp, idx, 1, new);
2010 ip->i_df.if_lastex = idx;
2011
2012 temp2 = new->br_blockcount;
2013 temp = new->br_startoff;
2014 break;
2015 }
2016 if (oldlen != newlen) {
2017 ASSERT(oldlen > newlen);
2018 xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS,
2019 (int64_t)(oldlen - newlen), rsvd);
2020
2021
2022
2023 }
2024 if (delta) {
2025 temp2 += temp;
2026 if (delta->xed_startoff > temp)
2027 delta->xed_startoff = temp;
2028 if (delta->xed_blockcount < temp2)
2029 delta->xed_blockcount = temp2;
2030 }
2031 *logflagsp = 0;
2032 return 0;
2033#undef MASK
2034#undef MASK2
2035#undef STATE_SET
2036#undef STATE_TEST
2037#undef STATE_SET_TEST
2038#undef SWITCH_STATE
2039}
2040
2041
2042
2043
2044
2045STATIC int
2046xfs_bmap_add_extent_hole_real(
2047 xfs_inode_t *ip,
2048 xfs_extnum_t idx,
2049 xfs_btree_cur_t *cur,
2050 xfs_bmbt_irec_t *new,
2051 int *logflagsp,
2052 xfs_extdelta_t *delta,
2053 int whichfork)
2054{
2055 xfs_bmbt_rec_host_t *ep;
2056 int error;
2057 int i;
2058 xfs_ifork_t *ifp;
2059 xfs_bmbt_irec_t left;
2060 xfs_bmbt_irec_t right;
2061 int rval=0;
2062 int state;
2063 xfs_filblks_t temp=0;
2064 xfs_filblks_t temp2=0;
2065 enum {
2066 LEFT_CONTIG, RIGHT_CONTIG,
2067 LEFT_DELAY, RIGHT_DELAY,
2068 LEFT_VALID, RIGHT_VALID
2069 };
2070
2071#define MASK(b) (1 << (b))
2072#define MASK2(a,b) (MASK(a) | MASK(b))
2073#define STATE_SET(b,v) ((v) ? (state |= MASK(b)) : (state &= ~MASK(b)))
2074#define STATE_TEST(b) (state & MASK(b))
2075#define STATE_SET_TEST(b,v) ((v) ? ((state |= MASK(b)), 1) : \
2076 ((state &= ~MASK(b)), 0))
2077#define SWITCH_STATE (state & MASK2(LEFT_CONTIG, RIGHT_CONTIG))
2078
2079 ifp = XFS_IFORK_PTR(ip, whichfork);
2080 ASSERT(idx <= ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t));
2081 ep = xfs_iext_get_ext(ifp, idx);
2082 state = 0;
2083
2084
2085
2086 if (STATE_SET_TEST(LEFT_VALID, idx > 0)) {
2087 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &left);
2088 STATE_SET(LEFT_DELAY, isnullstartblock(left.br_startblock));
2089 }
2090
2091
2092
2093
2094 if (STATE_SET_TEST(RIGHT_VALID,
2095 idx <
2096 ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))) {
2097 xfs_bmbt_get_all(ep, &right);
2098 STATE_SET(RIGHT_DELAY, isnullstartblock(right.br_startblock));
2099 }
2100
2101
2102
2103
2104 STATE_SET(LEFT_CONTIG,
2105 STATE_TEST(LEFT_VALID) && !STATE_TEST(LEFT_DELAY) &&
2106 left.br_startoff + left.br_blockcount == new->br_startoff &&
2107 left.br_startblock + left.br_blockcount == new->br_startblock &&
2108 left.br_state == new->br_state &&
2109 left.br_blockcount + new->br_blockcount <= MAXEXTLEN);
2110 STATE_SET(RIGHT_CONTIG,
2111 STATE_TEST(RIGHT_VALID) && !STATE_TEST(RIGHT_DELAY) &&
2112 new->br_startoff + new->br_blockcount == right.br_startoff &&
2113 new->br_startblock + new->br_blockcount ==
2114 right.br_startblock &&
2115 new->br_state == right.br_state &&
2116 new->br_blockcount + right.br_blockcount <= MAXEXTLEN &&
2117 (!STATE_TEST(LEFT_CONTIG) ||
2118 left.br_blockcount + new->br_blockcount +
2119 right.br_blockcount <= MAXEXTLEN));
2120
2121 error = 0;
2122
2123
2124
2125 switch (SWITCH_STATE) {
2126
2127 case MASK2(LEFT_CONTIG, RIGHT_CONTIG):
2128
2129
2130
2131
2132
2133 XFS_BMAP_TRACE_PRE_UPDATE("LC|RC", ip, idx - 1,
2134 whichfork);
2135 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1),
2136 left.br_blockcount + new->br_blockcount +
2137 right.br_blockcount);
2138 XFS_BMAP_TRACE_POST_UPDATE("LC|RC", ip, idx - 1,
2139 whichfork);
2140 XFS_BMAP_TRACE_DELETE("LC|RC", ip, idx, 1, whichfork);
2141 xfs_iext_remove(ifp, idx, 1);
2142 ifp->if_lastex = idx - 1;
2143 XFS_IFORK_NEXT_SET(ip, whichfork,
2144 XFS_IFORK_NEXTENTS(ip, whichfork) - 1);
2145 if (cur == NULL) {
2146 rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork);
2147 } else {
2148 rval = XFS_ILOG_CORE;
2149 if ((error = xfs_bmbt_lookup_eq(cur,
2150 right.br_startoff,
2151 right.br_startblock,
2152 right.br_blockcount, &i)))
2153 goto done;
2154 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2155 if ((error = xfs_btree_delete(cur, &i)))
2156 goto done;
2157 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2158 if ((error = xfs_btree_decrement(cur, 0, &i)))
2159 goto done;
2160 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2161 if ((error = xfs_bmbt_update(cur, left.br_startoff,
2162 left.br_startblock,
2163 left.br_blockcount +
2164 new->br_blockcount +
2165 right.br_blockcount,
2166 left.br_state)))
2167 goto done;
2168 }
2169
2170 temp = left.br_startoff;
2171 temp2 = left.br_blockcount +
2172 new->br_blockcount +
2173 right.br_blockcount;
2174 break;
2175
2176 case MASK(LEFT_CONTIG):
2177
2178
2179
2180
2181
2182 XFS_BMAP_TRACE_PRE_UPDATE("LC", ip, idx - 1, whichfork);
2183 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1),
2184 left.br_blockcount + new->br_blockcount);
2185 XFS_BMAP_TRACE_POST_UPDATE("LC", ip, idx - 1, whichfork);
2186 ifp->if_lastex = idx - 1;
2187 if (cur == NULL) {
2188 rval = xfs_ilog_fext(whichfork);
2189 } else {
2190 rval = 0;
2191 if ((error = xfs_bmbt_lookup_eq(cur,
2192 left.br_startoff,
2193 left.br_startblock,
2194 left.br_blockcount, &i)))
2195 goto done;
2196 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2197 if ((error = xfs_bmbt_update(cur, left.br_startoff,
2198 left.br_startblock,
2199 left.br_blockcount +
2200 new->br_blockcount,
2201 left.br_state)))
2202 goto done;
2203 }
2204
2205 temp = left.br_startoff;
2206 temp2 = left.br_blockcount +
2207 new->br_blockcount;
2208 break;
2209
2210 case MASK(RIGHT_CONTIG):
2211
2212
2213
2214
2215
2216 XFS_BMAP_TRACE_PRE_UPDATE("RC", ip, idx, whichfork);
2217 xfs_bmbt_set_allf(ep, new->br_startoff, new->br_startblock,
2218 new->br_blockcount + right.br_blockcount,
2219 right.br_state);
2220 XFS_BMAP_TRACE_POST_UPDATE("RC", ip, idx, whichfork);
2221 ifp->if_lastex = idx;
2222 if (cur == NULL) {
2223 rval = xfs_ilog_fext(whichfork);
2224 } else {
2225 rval = 0;
2226 if ((error = xfs_bmbt_lookup_eq(cur,
2227 right.br_startoff,
2228 right.br_startblock,
2229 right.br_blockcount, &i)))
2230 goto done;
2231 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2232 if ((error = xfs_bmbt_update(cur, new->br_startoff,
2233 new->br_startblock,
2234 new->br_blockcount +
2235 right.br_blockcount,
2236 right.br_state)))
2237 goto done;
2238 }
2239
2240 temp = new->br_startoff;
2241 temp2 = new->br_blockcount +
2242 right.br_blockcount;
2243 break;
2244
2245 case 0:
2246
2247
2248
2249
2250
2251 XFS_BMAP_TRACE_INSERT("0", ip, idx, 1, new, NULL, whichfork);
2252 xfs_iext_insert(ifp, idx, 1, new);
2253 ifp->if_lastex = idx;
2254 XFS_IFORK_NEXT_SET(ip, whichfork,
2255 XFS_IFORK_NEXTENTS(ip, whichfork) + 1);
2256 if (cur == NULL) {
2257 rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork);
2258 } else {
2259 rval = XFS_ILOG_CORE;
2260 if ((error = xfs_bmbt_lookup_eq(cur,
2261 new->br_startoff,
2262 new->br_startblock,
2263 new->br_blockcount, &i)))
2264 goto done;
2265 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
2266 cur->bc_rec.b.br_state = new->br_state;
2267 if ((error = xfs_btree_insert(cur, &i)))
2268 goto done;
2269 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2270 }
2271
2272 temp = new->br_startoff;
2273 temp2 = new->br_blockcount;
2274 break;
2275 }
2276 if (delta) {
2277 temp2 += temp;
2278 if (delta->xed_startoff > temp)
2279 delta->xed_startoff = temp;
2280 if (delta->xed_blockcount < temp2)
2281 delta->xed_blockcount = temp2;
2282 }
2283done:
2284 *logflagsp = rval;
2285 return error;
2286#undef MASK
2287#undef MASK2
2288#undef STATE_SET
2289#undef STATE_TEST
2290#undef STATE_SET_TEST
2291#undef SWITCH_STATE
2292}
2293
2294
2295
2296
2297STATIC int
2298xfs_bmap_extsize_align(
2299 xfs_mount_t *mp,
2300 xfs_bmbt_irec_t *gotp,
2301 xfs_bmbt_irec_t *prevp,
2302 xfs_extlen_t extsz,
2303 int rt,
2304 int eof,
2305 int delay,
2306 int convert,
2307 xfs_fileoff_t *offp,
2308 xfs_extlen_t *lenp)
2309{
2310 xfs_fileoff_t orig_off;
2311 xfs_extlen_t orig_alen;
2312 xfs_fileoff_t orig_end;
2313 xfs_fileoff_t nexto;
2314 xfs_fileoff_t prevo;
2315 xfs_fileoff_t align_off;
2316 xfs_extlen_t align_alen;
2317 xfs_extlen_t temp;
2318
2319 if (convert)
2320 return 0;
2321
2322 orig_off = align_off = *offp;
2323 orig_alen = align_alen = *lenp;
2324 orig_end = orig_off + orig_alen;
2325
2326
2327
2328
2329
2330 if (!delay && !eof &&
2331 (orig_off >= gotp->br_startoff) &&
2332 (orig_end <= gotp->br_startoff + gotp->br_blockcount)) {
2333 return 0;
2334 }
2335
2336
2337
2338
2339
2340
2341
2342
2343 temp = do_mod(orig_off, extsz);
2344 if (temp) {
2345 align_alen += temp;
2346 align_off -= temp;
2347 }
2348
2349
2350
2351 if ((temp = (align_alen % extsz))) {
2352 align_alen += extsz - temp;
2353 }
2354
2355
2356
2357
2358 if (prevp->br_startoff != NULLFILEOFF) {
2359 if (prevp->br_startblock == HOLESTARTBLOCK)
2360 prevo = prevp->br_startoff;
2361 else
2362 prevo = prevp->br_startoff + prevp->br_blockcount;
2363 } else
2364 prevo = 0;
2365 if (align_off != orig_off && align_off < prevo)
2366 align_off = prevo;
2367
2368
2369
2370
2371
2372
2373
2374
2375 if (!eof && gotp->br_startoff != NULLFILEOFF) {
2376 if ((delay && gotp->br_startblock == HOLESTARTBLOCK) ||
2377 (!delay && gotp->br_startblock == DELAYSTARTBLOCK))
2378 nexto = gotp->br_startoff + gotp->br_blockcount;
2379 else
2380 nexto = gotp->br_startoff;
2381 } else
2382 nexto = NULLFILEOFF;
2383 if (!eof &&
2384 align_off + align_alen != orig_end &&
2385 align_off + align_alen > nexto)
2386 align_off = nexto > align_alen ? nexto - align_alen : 0;
2387
2388
2389
2390
2391
2392
2393 if (align_off != orig_off && align_off < prevo)
2394 align_off = prevo;
2395 if (align_off + align_alen != orig_end &&
2396 align_off + align_alen > nexto &&
2397 nexto != NULLFILEOFF) {
2398 ASSERT(nexto > prevo);
2399 align_alen = nexto - align_off;
2400 }
2401
2402
2403
2404
2405
2406 if (rt && (temp = (align_alen % mp->m_sb.sb_rextsize))) {
2407
2408
2409
2410
2411 if (orig_off < align_off ||
2412 orig_end > align_off + align_alen ||
2413 align_alen - temp < orig_alen)
2414 return XFS_ERROR(EINVAL);
2415
2416
2417
2418 if (align_off + temp <= orig_off) {
2419 align_alen -= temp;
2420 align_off += temp;
2421 }
2422
2423
2424
2425 else if (align_off + align_alen - temp >= orig_end)
2426 align_alen -= temp;
2427
2428
2429
2430 else {
2431 align_alen -= orig_off - align_off;
2432 align_off = orig_off;
2433 align_alen -= align_alen % mp->m_sb.sb_rextsize;
2434 }
2435
2436
2437
2438 if (orig_off < align_off || orig_end > align_off + align_alen)
2439 return XFS_ERROR(EINVAL);
2440 } else {
2441 ASSERT(orig_off >= align_off);
2442 ASSERT(orig_end <= align_off + align_alen);
2443 }
2444
2445#ifdef DEBUG
2446 if (!eof && gotp->br_startoff != NULLFILEOFF)
2447 ASSERT(align_off + align_alen <= gotp->br_startoff);
2448 if (prevp->br_startoff != NULLFILEOFF)
2449 ASSERT(align_off >= prevp->br_startoff + prevp->br_blockcount);
2450#endif
2451
2452 *lenp = align_alen;
2453 *offp = align_off;
2454 return 0;
2455}
2456
2457#define XFS_ALLOC_GAP_UNITS 4
2458
2459STATIC void
2460xfs_bmap_adjacent(
2461 xfs_bmalloca_t *ap)
2462{
2463 xfs_fsblock_t adjust;
2464 xfs_agnumber_t fb_agno;
2465 xfs_mount_t *mp;
2466 int nullfb;
2467 int rt;
2468
2469#define ISVALID(x,y) \
2470 (rt ? \
2471 (x) < mp->m_sb.sb_rblocks : \
2472 XFS_FSB_TO_AGNO(mp, x) == XFS_FSB_TO_AGNO(mp, y) && \
2473 XFS_FSB_TO_AGNO(mp, x) < mp->m_sb.sb_agcount && \
2474 XFS_FSB_TO_AGBNO(mp, x) < mp->m_sb.sb_agblocks)
2475
2476 mp = ap->ip->i_mount;
2477 nullfb = ap->firstblock == NULLFSBLOCK;
2478 rt = XFS_IS_REALTIME_INODE(ap->ip) && ap->userdata;
2479 fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, ap->firstblock);
2480
2481
2482
2483
2484 if (ap->eof && ap->prevp->br_startoff != NULLFILEOFF &&
2485 !isnullstartblock(ap->prevp->br_startblock) &&
2486 ISVALID(ap->prevp->br_startblock + ap->prevp->br_blockcount,
2487 ap->prevp->br_startblock)) {
2488 ap->rval = ap->prevp->br_startblock + ap->prevp->br_blockcount;
2489
2490
2491
2492 adjust = ap->off -
2493 (ap->prevp->br_startoff + ap->prevp->br_blockcount);
2494 if (adjust &&
2495 ISVALID(ap->rval + adjust, ap->prevp->br_startblock))
2496 ap->rval += adjust;
2497 }
2498
2499
2500
2501
2502
2503 else if (!ap->eof) {
2504 xfs_fsblock_t gotbno;
2505 xfs_fsblock_t gotdiff=0;
2506 xfs_fsblock_t prevbno;
2507 xfs_fsblock_t prevdiff=0;
2508
2509
2510
2511
2512
2513 if (ap->prevp->br_startoff != NULLFILEOFF &&
2514 !isnullstartblock(ap->prevp->br_startblock) &&
2515 (prevbno = ap->prevp->br_startblock +
2516 ap->prevp->br_blockcount) &&
2517 ISVALID(prevbno, ap->prevp->br_startblock)) {
2518
2519
2520
2521 adjust = prevdiff = ap->off -
2522 (ap->prevp->br_startoff +
2523 ap->prevp->br_blockcount);
2524
2525
2526
2527
2528
2529
2530
2531
2532 if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->alen &&
2533 ISVALID(prevbno + prevdiff,
2534 ap->prevp->br_startblock))
2535 prevbno += adjust;
2536 else
2537 prevdiff += adjust;
2538
2539
2540
2541
2542 if (!rt && !nullfb &&
2543 XFS_FSB_TO_AGNO(mp, prevbno) != fb_agno)
2544 prevbno = NULLFSBLOCK;
2545 }
2546
2547
2548
2549 else
2550 prevbno = NULLFSBLOCK;
2551
2552
2553
2554
2555 if (!isnullstartblock(ap->gotp->br_startblock)) {
2556
2557
2558
2559 adjust = gotdiff = ap->gotp->br_startoff - ap->off;
2560
2561
2562
2563
2564 gotbno = ap->gotp->br_startblock;
2565
2566
2567
2568
2569
2570
2571
2572 if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->alen &&
2573 ISVALID(gotbno - gotdiff, gotbno))
2574 gotbno -= adjust;
2575 else if (ISVALID(gotbno - ap->alen, gotbno)) {
2576 gotbno -= ap->alen;
2577 gotdiff += adjust - ap->alen;
2578 } else
2579 gotdiff += adjust;
2580
2581
2582
2583
2584 if (!rt && !nullfb &&
2585 XFS_FSB_TO_AGNO(mp, gotbno) != fb_agno)
2586 gotbno = NULLFSBLOCK;
2587 }
2588
2589
2590
2591 else
2592 gotbno = NULLFSBLOCK;
2593
2594
2595
2596
2597 if (prevbno != NULLFSBLOCK && gotbno != NULLFSBLOCK)
2598 ap->rval = prevdiff <= gotdiff ? prevbno : gotbno;
2599 else if (prevbno != NULLFSBLOCK)
2600 ap->rval = prevbno;
2601 else if (gotbno != NULLFSBLOCK)
2602 ap->rval = gotbno;
2603 }
2604#undef ISVALID
2605}
2606
2607STATIC int
2608xfs_bmap_rtalloc(
2609 xfs_bmalloca_t *ap)
2610{
2611 xfs_alloctype_t atype = 0;
2612 int error;
2613 xfs_mount_t *mp;
2614 xfs_extlen_t prod = 0;
2615 xfs_extlen_t ralen = 0;
2616 xfs_extlen_t align;
2617 xfs_rtblock_t rtb;
2618
2619 mp = ap->ip->i_mount;
2620 align = xfs_get_extsz_hint(ap->ip);
2621 prod = align / mp->m_sb.sb_rextsize;
2622 error = xfs_bmap_extsize_align(mp, ap->gotp, ap->prevp,
2623 align, 1, ap->eof, 0,
2624 ap->conv, &ap->off, &ap->alen);
2625 if (error)
2626 return error;
2627 ASSERT(ap->alen);
2628 ASSERT(ap->alen % mp->m_sb.sb_rextsize == 0);
2629
2630
2631
2632
2633
2634 if (do_mod(ap->off, align) || ap->alen % align)
2635 prod = 1;
2636
2637
2638
2639 ralen = ap->alen / mp->m_sb.sb_rextsize;
2640
2641
2642
2643
2644
2645
2646
2647 if (ralen * mp->m_sb.sb_rextsize >= MAXEXTLEN)
2648 ralen = MAXEXTLEN / mp->m_sb.sb_rextsize;
2649
2650
2651
2652
2653 if (ap->eof && ap->off == 0) {
2654 xfs_rtblock_t uninitialized_var(rtx);
2655
2656 error = xfs_rtpick_extent(mp, ap->tp, ralen, &rtx);
2657 if (error)
2658 return error;
2659 ap->rval = rtx * mp->m_sb.sb_rextsize;
2660 } else {
2661 ap->rval = 0;
2662 }
2663
2664 xfs_bmap_adjacent(ap);
2665
2666
2667
2668
2669 atype = ap->rval == 0 ? XFS_ALLOCTYPE_ANY_AG : XFS_ALLOCTYPE_NEAR_BNO;
2670 do_div(ap->rval, mp->m_sb.sb_rextsize);
2671 rtb = ap->rval;
2672 ap->alen = ralen;
2673 if ((error = xfs_rtallocate_extent(ap->tp, ap->rval, 1, ap->alen,
2674 &ralen, atype, ap->wasdel, prod, &rtb)))
2675 return error;
2676 if (rtb == NULLFSBLOCK && prod > 1 &&
2677 (error = xfs_rtallocate_extent(ap->tp, ap->rval, 1,
2678 ap->alen, &ralen, atype,
2679 ap->wasdel, 1, &rtb)))
2680 return error;
2681 ap->rval = rtb;
2682 if (ap->rval != NULLFSBLOCK) {
2683 ap->rval *= mp->m_sb.sb_rextsize;
2684 ralen *= mp->m_sb.sb_rextsize;
2685 ap->alen = ralen;
2686 ap->ip->i_d.di_nblocks += ralen;
2687 xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE);
2688 if (ap->wasdel)
2689 ap->ip->i_delayed_blks -= ralen;
2690
2691
2692
2693
2694 xfs_trans_mod_dquot_byino(ap->tp, ap->ip,
2695 ap->wasdel ? XFS_TRANS_DQ_DELRTBCOUNT :
2696 XFS_TRANS_DQ_RTBCOUNT, (long) ralen);
2697 } else {
2698 ap->alen = 0;
2699 }
2700 return 0;
2701}
2702
2703STATIC int
2704xfs_bmap_btalloc(
2705 xfs_bmalloca_t *ap)
2706{
2707 xfs_mount_t *mp;
2708 xfs_alloctype_t atype = 0;
2709 xfs_extlen_t align;
2710 xfs_agnumber_t ag;
2711 xfs_agnumber_t fb_agno;
2712 xfs_agnumber_t startag;
2713 xfs_alloc_arg_t args;
2714 xfs_extlen_t blen;
2715 xfs_extlen_t nextminlen = 0;
2716 xfs_perag_t *pag;
2717 int nullfb;
2718 int isaligned;
2719 int notinit;
2720 int tryagain;
2721 int error;
2722
2723 mp = ap->ip->i_mount;
2724 align = ap->userdata ? xfs_get_extsz_hint(ap->ip) : 0;
2725 if (unlikely(align)) {
2726 error = xfs_bmap_extsize_align(mp, ap->gotp, ap->prevp,
2727 align, 0, ap->eof, 0, ap->conv,
2728 &ap->off, &ap->alen);
2729 ASSERT(!error);
2730 ASSERT(ap->alen);
2731 }
2732 nullfb = ap->firstblock == NULLFSBLOCK;
2733 fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, ap->firstblock);
2734 if (nullfb) {
2735 if (ap->userdata && xfs_inode_is_filestream(ap->ip)) {
2736 ag = xfs_filestream_lookup_ag(ap->ip);
2737 ag = (ag != NULLAGNUMBER) ? ag : 0;
2738 ap->rval = XFS_AGB_TO_FSB(mp, ag, 0);
2739 } else {
2740 ap->rval = XFS_INO_TO_FSB(mp, ap->ip->i_ino);
2741 }
2742 } else
2743 ap->rval = ap->firstblock;
2744
2745 xfs_bmap_adjacent(ap);
2746
2747
2748
2749
2750
2751 if (nullfb || XFS_FSB_TO_AGNO(mp, ap->rval) == fb_agno)
2752 ;
2753 else
2754 ap->rval = ap->firstblock;
2755
2756
2757
2758 tryagain = isaligned = 0;
2759 args.tp = ap->tp;
2760 args.mp = mp;
2761 args.fsbno = ap->rval;
2762 args.maxlen = MIN(ap->alen, mp->m_sb.sb_agblocks);
2763 args.firstblock = ap->firstblock;
2764 blen = 0;
2765 if (nullfb) {
2766 if (ap->userdata && xfs_inode_is_filestream(ap->ip))
2767 args.type = XFS_ALLOCTYPE_NEAR_BNO;
2768 else
2769 args.type = XFS_ALLOCTYPE_START_BNO;
2770 args.total = ap->total;
2771
2772
2773
2774
2775
2776
2777
2778
2779 startag = ag = XFS_FSB_TO_AGNO(mp, args.fsbno);
2780 if (startag == NULLAGNUMBER)
2781 startag = ag = 0;
2782 notinit = 0;
2783 down_read(&mp->m_peraglock);
2784 while (blen < ap->alen) {
2785 pag = &mp->m_perag[ag];
2786 if (!pag->pagf_init &&
2787 (error = xfs_alloc_pagf_init(mp, args.tp,
2788 ag, XFS_ALLOC_FLAG_TRYLOCK))) {
2789 up_read(&mp->m_peraglock);
2790 return error;
2791 }
2792
2793
2794
2795 if (pag->pagf_init) {
2796 xfs_extlen_t longest;
2797 longest = xfs_alloc_longest_free_extent(mp, pag);
2798 if (blen < longest)
2799 blen = longest;
2800 } else
2801 notinit = 1;
2802
2803 if (xfs_inode_is_filestream(ap->ip)) {
2804 if (blen >= ap->alen)
2805 break;
2806
2807 if (ap->userdata) {
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817 if (startag == NULLAGNUMBER)
2818 break;
2819
2820 error = xfs_filestream_new_ag(ap, &ag);
2821 if (error) {
2822 up_read(&mp->m_peraglock);
2823 return error;
2824 }
2825
2826
2827 startag = NULLAGNUMBER;
2828 continue;
2829 }
2830 }
2831 if (++ag == mp->m_sb.sb_agcount)
2832 ag = 0;
2833 if (ag == startag)
2834 break;
2835 }
2836 up_read(&mp->m_peraglock);
2837
2838
2839
2840
2841 if (notinit || blen < ap->minlen)
2842 args.minlen = ap->minlen;
2843
2844
2845
2846
2847 else if (blen < ap->alen)
2848 args.minlen = blen;
2849
2850
2851
2852
2853 else
2854 args.minlen = ap->alen;
2855
2856
2857
2858
2859
2860 if (xfs_inode_is_filestream(ap->ip))
2861 ap->rval = args.fsbno = XFS_AGB_TO_FSB(mp, ag, 0);
2862 } else if (ap->low) {
2863 if (xfs_inode_is_filestream(ap->ip))
2864 args.type = XFS_ALLOCTYPE_FIRST_AG;
2865 else
2866 args.type = XFS_ALLOCTYPE_START_BNO;
2867 args.total = args.minlen = ap->minlen;
2868 } else {
2869 args.type = XFS_ALLOCTYPE_NEAR_BNO;
2870 args.total = ap->total;
2871 args.minlen = ap->minlen;
2872 }
2873
2874 if (unlikely(align)) {
2875 args.prod = align;
2876 if ((args.mod = (xfs_extlen_t)do_mod(ap->off, args.prod)))
2877 args.mod = (xfs_extlen_t)(args.prod - args.mod);
2878 } else if (mp->m_sb.sb_blocksize >= PAGE_CACHE_SIZE) {
2879 args.prod = 1;
2880 args.mod = 0;
2881 } else {
2882 args.prod = PAGE_CACHE_SIZE >> mp->m_sb.sb_blocklog;
2883 if ((args.mod = (xfs_extlen_t)(do_mod(ap->off, args.prod))))
2884 args.mod = (xfs_extlen_t)(args.prod - args.mod);
2885 }
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895 if (!ap->low && ap->aeof) {
2896 if (!ap->off) {
2897 args.alignment = mp->m_dalign;
2898 atype = args.type;
2899 isaligned = 1;
2900
2901
2902
2903 if (blen > args.alignment && blen <= ap->alen)
2904 args.minlen = blen - args.alignment;
2905 args.minalignslop = 0;
2906 } else {
2907
2908
2909
2910
2911
2912 atype = args.type;
2913 tryagain = 1;
2914 args.type = XFS_ALLOCTYPE_THIS_BNO;
2915 args.alignment = 1;
2916
2917
2918
2919
2920
2921
2922 if (blen > mp->m_dalign && blen <= ap->alen)
2923 nextminlen = blen - mp->m_dalign;
2924 else
2925 nextminlen = args.minlen;
2926 if (nextminlen + mp->m_dalign > args.minlen + 1)
2927 args.minalignslop =
2928 nextminlen + mp->m_dalign -
2929 args.minlen - 1;
2930 else
2931 args.minalignslop = 0;
2932 }
2933 } else {
2934 args.alignment = 1;
2935 args.minalignslop = 0;
2936 }
2937 args.minleft = ap->minleft;
2938 args.wasdel = ap->wasdel;
2939 args.isfl = 0;
2940 args.userdata = ap->userdata;
2941 if ((error = xfs_alloc_vextent(&args)))
2942 return error;
2943 if (tryagain && args.fsbno == NULLFSBLOCK) {
2944
2945
2946
2947
2948 args.type = atype;
2949 args.fsbno = ap->rval;
2950 args.alignment = mp->m_dalign;
2951 args.minlen = nextminlen;
2952 args.minalignslop = 0;
2953 isaligned = 1;
2954 if ((error = xfs_alloc_vextent(&args)))
2955 return error;
2956 }
2957 if (isaligned && args.fsbno == NULLFSBLOCK) {
2958
2959
2960
2961
2962 args.type = atype;
2963 args.fsbno = ap->rval;
2964 args.alignment = 0;
2965 if ((error = xfs_alloc_vextent(&args)))
2966 return error;
2967 }
2968 if (args.fsbno == NULLFSBLOCK && nullfb &&
2969 args.minlen > ap->minlen) {
2970 args.minlen = ap->minlen;
2971 args.type = XFS_ALLOCTYPE_START_BNO;
2972 args.fsbno = ap->rval;
2973 if ((error = xfs_alloc_vextent(&args)))
2974 return error;
2975 }
2976 if (args.fsbno == NULLFSBLOCK && nullfb) {
2977 args.fsbno = 0;
2978 args.type = XFS_ALLOCTYPE_FIRST_AG;
2979 args.total = ap->minlen;
2980 args.minleft = 0;
2981 if ((error = xfs_alloc_vextent(&args)))
2982 return error;
2983 ap->low = 1;
2984 }
2985 if (args.fsbno != NULLFSBLOCK) {
2986 ap->firstblock = ap->rval = args.fsbno;
2987 ASSERT(nullfb || fb_agno == args.agno ||
2988 (ap->low && fb_agno < args.agno));
2989 ap->alen = args.len;
2990 ap->ip->i_d.di_nblocks += args.len;
2991 xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE);
2992 if (ap->wasdel)
2993 ap->ip->i_delayed_blks -= args.len;
2994
2995
2996
2997
2998 xfs_trans_mod_dquot_byino(ap->tp, ap->ip,
2999 ap->wasdel ? XFS_TRANS_DQ_DELBCOUNT :
3000 XFS_TRANS_DQ_BCOUNT,
3001 (long) args.len);
3002 } else {
3003 ap->rval = NULLFSBLOCK;
3004 ap->alen = 0;
3005 }
3006 return 0;
3007}
3008
3009
3010
3011
3012
3013STATIC int
3014xfs_bmap_alloc(
3015 xfs_bmalloca_t *ap)
3016{
3017 if (XFS_IS_REALTIME_INODE(ap->ip) && ap->userdata)
3018 return xfs_bmap_rtalloc(ap);
3019 return xfs_bmap_btalloc(ap);
3020}
3021
3022
3023
3024
3025
3026
3027
3028STATIC int
3029xfs_bmap_btree_to_extents(
3030 xfs_trans_t *tp,
3031 xfs_inode_t *ip,
3032 xfs_btree_cur_t *cur,
3033 int *logflagsp,
3034 int whichfork)
3035{
3036
3037 struct xfs_btree_block *cblock;
3038 xfs_fsblock_t cbno;
3039 xfs_buf_t *cbp;
3040 int error;
3041 xfs_ifork_t *ifp;
3042 xfs_mount_t *mp;
3043 __be64 *pp;
3044 struct xfs_btree_block *rblock;
3045
3046 mp = ip->i_mount;
3047 ifp = XFS_IFORK_PTR(ip, whichfork);
3048 ASSERT(ifp->if_flags & XFS_IFEXTENTS);
3049 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE);
3050 rblock = ifp->if_broot;
3051 ASSERT(be16_to_cpu(rblock->bb_level) == 1);
3052 ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1);
3053 ASSERT(xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0) == 1);
3054 pp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, ifp->if_broot_bytes);
3055 cbno = be64_to_cpu(*pp);
3056 *logflagsp = 0;
3057#ifdef DEBUG
3058 if ((error = xfs_btree_check_lptr(cur, cbno, 1)))
3059 return error;
3060#endif
3061 if ((error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp,
3062 XFS_BMAP_BTREE_REF)))
3063 return error;
3064 cblock = XFS_BUF_TO_BLOCK(cbp);
3065 if ((error = xfs_btree_check_block(cur, cblock, 0, cbp)))
3066 return error;
3067 xfs_bmap_add_free(cbno, 1, cur->bc_private.b.flist, mp);
3068 ip->i_d.di_nblocks--;
3069 xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, -1L);
3070 xfs_trans_binval(tp, cbp);
3071 if (cur->bc_bufs[0] == cbp)
3072 cur->bc_bufs[0] = NULL;
3073 xfs_iroot_realloc(ip, -1, whichfork);
3074 ASSERT(ifp->if_broot == NULL);
3075 ASSERT((ifp->if_flags & XFS_IFBROOT) == 0);
3076 XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS);
3077 *logflagsp = XFS_ILOG_CORE | xfs_ilog_fext(whichfork);
3078 return 0;
3079}
3080
3081
3082
3083
3084
3085STATIC int
3086xfs_bmap_del_extent(
3087 xfs_inode_t *ip,
3088 xfs_trans_t *tp,
3089 xfs_extnum_t idx,
3090 xfs_bmap_free_t *flist,
3091 xfs_btree_cur_t *cur,
3092 xfs_bmbt_irec_t *del,
3093 int *logflagsp,
3094 xfs_extdelta_t *delta,
3095 int whichfork,
3096 int rsvd)
3097{
3098 xfs_filblks_t da_new;
3099 xfs_filblks_t da_old;
3100 xfs_fsblock_t del_endblock=0;
3101 xfs_fileoff_t del_endoff;
3102 int delay;
3103 int do_fx;
3104 xfs_bmbt_rec_host_t *ep;
3105 int error;
3106 int flags;
3107 xfs_bmbt_irec_t got;
3108 xfs_fileoff_t got_endoff;
3109 int i;
3110 xfs_ifork_t *ifp;
3111 xfs_mount_t *mp;
3112 xfs_filblks_t nblks;
3113 xfs_bmbt_irec_t new;
3114
3115 uint qfield;
3116 xfs_filblks_t temp;
3117 xfs_filblks_t temp2;
3118
3119 XFS_STATS_INC(xs_del_exlist);
3120 mp = ip->i_mount;
3121 ifp = XFS_IFORK_PTR(ip, whichfork);
3122 ASSERT((idx >= 0) && (idx < ifp->if_bytes /
3123 (uint)sizeof(xfs_bmbt_rec_t)));
3124 ASSERT(del->br_blockcount > 0);
3125 ep = xfs_iext_get_ext(ifp, idx);
3126 xfs_bmbt_get_all(ep, &got);
3127 ASSERT(got.br_startoff <= del->br_startoff);
3128 del_endoff = del->br_startoff + del->br_blockcount;
3129 got_endoff = got.br_startoff + got.br_blockcount;
3130 ASSERT(got_endoff >= del_endoff);
3131 delay = isnullstartblock(got.br_startblock);
3132 ASSERT(isnullstartblock(del->br_startblock) == delay);
3133 flags = 0;
3134 qfield = 0;
3135 error = 0;
3136
3137
3138
3139 if (!delay) {
3140 flags = XFS_ILOG_CORE;
3141
3142
3143
3144 if (whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip)) {
3145 xfs_fsblock_t bno;
3146 xfs_filblks_t len;
3147
3148 ASSERT(do_mod(del->br_blockcount,
3149 mp->m_sb.sb_rextsize) == 0);
3150 ASSERT(do_mod(del->br_startblock,
3151 mp->m_sb.sb_rextsize) == 0);
3152 bno = del->br_startblock;
3153 len = del->br_blockcount;
3154 do_div(bno, mp->m_sb.sb_rextsize);
3155 do_div(len, mp->m_sb.sb_rextsize);
3156 if ((error = xfs_rtfree_extent(ip->i_transp, bno,
3157 (xfs_extlen_t)len)))
3158 goto done;
3159 do_fx = 0;
3160 nblks = len * mp->m_sb.sb_rextsize;
3161 qfield = XFS_TRANS_DQ_RTBCOUNT;
3162 }
3163
3164
3165
3166 else {
3167 do_fx = 1;
3168 nblks = del->br_blockcount;
3169 qfield = XFS_TRANS_DQ_BCOUNT;
3170 }
3171
3172
3173
3174 del_endblock = del->br_startblock + del->br_blockcount;
3175 if (cur) {
3176 if ((error = xfs_bmbt_lookup_eq(cur, got.br_startoff,
3177 got.br_startblock, got.br_blockcount,
3178 &i)))
3179 goto done;
3180 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
3181 }
3182 da_old = da_new = 0;
3183 } else {
3184 da_old = startblockval(got.br_startblock);
3185 da_new = 0;
3186 nblks = 0;
3187 do_fx = 0;
3188 }
3189
3190
3191
3192
3193 switch (((got.br_startoff == del->br_startoff) << 1) |
3194 (got_endoff == del_endoff)) {
3195 case 3:
3196
3197
3198
3199 XFS_BMAP_TRACE_DELETE("3", ip, idx, 1, whichfork);
3200 xfs_iext_remove(ifp, idx, 1);
3201 ifp->if_lastex = idx;
3202 if (delay)
3203 break;
3204 XFS_IFORK_NEXT_SET(ip, whichfork,
3205 XFS_IFORK_NEXTENTS(ip, whichfork) - 1);
3206 flags |= XFS_ILOG_CORE;
3207 if (!cur) {
3208 flags |= xfs_ilog_fext(whichfork);
3209 break;
3210 }
3211 if ((error = xfs_btree_delete(cur, &i)))
3212 goto done;
3213 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
3214 break;
3215
3216 case 2:
3217
3218
3219
3220 XFS_BMAP_TRACE_PRE_UPDATE("2", ip, idx, whichfork);
3221 xfs_bmbt_set_startoff(ep, del_endoff);
3222 temp = got.br_blockcount - del->br_blockcount;
3223 xfs_bmbt_set_blockcount(ep, temp);
3224 ifp->if_lastex = idx;
3225 if (delay) {
3226 temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
3227 da_old);
3228 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
3229 XFS_BMAP_TRACE_POST_UPDATE("2", ip, idx,
3230 whichfork);
3231 da_new = temp;
3232 break;
3233 }
3234 xfs_bmbt_set_startblock(ep, del_endblock);
3235 XFS_BMAP_TRACE_POST_UPDATE("2", ip, idx, whichfork);
3236 if (!cur) {
3237 flags |= xfs_ilog_fext(whichfork);
3238 break;
3239 }
3240 if ((error = xfs_bmbt_update(cur, del_endoff, del_endblock,
3241 got.br_blockcount - del->br_blockcount,
3242 got.br_state)))
3243 goto done;
3244 break;
3245
3246 case 1:
3247
3248
3249
3250 temp = got.br_blockcount - del->br_blockcount;
3251 XFS_BMAP_TRACE_PRE_UPDATE("1", ip, idx, whichfork);
3252 xfs_bmbt_set_blockcount(ep, temp);
3253 ifp->if_lastex = idx;
3254 if (delay) {
3255 temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
3256 da_old);
3257 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
3258 XFS_BMAP_TRACE_POST_UPDATE("1", ip, idx,
3259 whichfork);
3260 da_new = temp;
3261 break;
3262 }
3263 XFS_BMAP_TRACE_POST_UPDATE("1", ip, idx, whichfork);
3264 if (!cur) {
3265 flags |= xfs_ilog_fext(whichfork);
3266 break;
3267 }
3268 if ((error = xfs_bmbt_update(cur, got.br_startoff,
3269 got.br_startblock,
3270 got.br_blockcount - del->br_blockcount,
3271 got.br_state)))
3272 goto done;
3273 break;
3274
3275 case 0:
3276
3277
3278
3279 temp = del->br_startoff - got.br_startoff;
3280 XFS_BMAP_TRACE_PRE_UPDATE("0", ip, idx, whichfork);
3281 xfs_bmbt_set_blockcount(ep, temp);
3282 new.br_startoff = del_endoff;
3283 temp2 = got_endoff - del_endoff;
3284 new.br_blockcount = temp2;
3285 new.br_state = got.br_state;
3286 if (!delay) {
3287 new.br_startblock = del_endblock;
3288 flags |= XFS_ILOG_CORE;
3289 if (cur) {
3290 if ((error = xfs_bmbt_update(cur,
3291 got.br_startoff,
3292 got.br_startblock, temp,
3293 got.br_state)))
3294 goto done;
3295 if ((error = xfs_btree_increment(cur, 0, &i)))
3296 goto done;
3297 cur->bc_rec.b = new;
3298 error = xfs_btree_insert(cur, &i);
3299 if (error && error != ENOSPC)
3300 goto done;
3301
3302
3303
3304
3305
3306
3307 if (error == ENOSPC) {
3308
3309
3310
3311
3312 if ((error = xfs_bmbt_lookup_eq(cur,
3313 got.br_startoff,
3314 got.br_startblock,
3315 temp, &i)))
3316 goto done;
3317 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
3318
3319
3320
3321
3322 if ((error = xfs_bmbt_update(cur,
3323 got.br_startoff,
3324 got.br_startblock,
3325 got.br_blockcount,
3326 got.br_state)))
3327 goto done;
3328
3329
3330
3331
3332 xfs_bmbt_set_blockcount(ep,
3333 got.br_blockcount);
3334 flags = 0;
3335 error = XFS_ERROR(ENOSPC);
3336 goto done;
3337 }
3338 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
3339 } else
3340 flags |= xfs_ilog_fext(whichfork);
3341 XFS_IFORK_NEXT_SET(ip, whichfork,
3342 XFS_IFORK_NEXTENTS(ip, whichfork) + 1);
3343 } else {
3344 ASSERT(whichfork == XFS_DATA_FORK);
3345 temp = xfs_bmap_worst_indlen(ip, temp);
3346 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
3347 temp2 = xfs_bmap_worst_indlen(ip, temp2);
3348 new.br_startblock = nullstartblock((int)temp2);
3349 da_new = temp + temp2;
3350 while (da_new > da_old) {
3351 if (temp) {
3352 temp--;
3353 da_new--;
3354 xfs_bmbt_set_startblock(ep,
3355 nullstartblock((int)temp));
3356 }
3357 if (da_new == da_old)
3358 break;
3359 if (temp2) {
3360 temp2--;
3361 da_new--;
3362 new.br_startblock =
3363 nullstartblock((int)temp2);
3364 }
3365 }
3366 }
3367 XFS_BMAP_TRACE_POST_UPDATE("0", ip, idx, whichfork);
3368 XFS_BMAP_TRACE_INSERT("0", ip, idx + 1, 1, &new, NULL,
3369 whichfork);
3370 xfs_iext_insert(ifp, idx + 1, 1, &new);
3371 ifp->if_lastex = idx + 1;
3372 break;
3373 }
3374
3375
3376
3377 if (do_fx)
3378 xfs_bmap_add_free(del->br_startblock, del->br_blockcount, flist,
3379 mp);
3380
3381
3382
3383 if (nblks)
3384 ip->i_d.di_nblocks -= nblks;
3385
3386
3387
3388 if (qfield)
3389 xfs_trans_mod_dquot_byino(tp, ip, qfield, (long)-nblks);
3390
3391
3392
3393
3394
3395 ASSERT(da_old >= da_new);
3396 if (da_old > da_new)
3397 xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, (int64_t)(da_old - da_new),
3398 rsvd);
3399 if (delta) {
3400
3401 if (delta->xed_startoff > got.br_startoff)
3402 delta->xed_startoff = got.br_startoff;
3403 if (delta->xed_blockcount < got.br_startoff+got.br_blockcount)
3404 delta->xed_blockcount = got.br_startoff +
3405 got.br_blockcount;
3406 }
3407done:
3408 *logflagsp = flags;
3409 return error;
3410}
3411
3412
3413
3414
3415
3416STATIC void
3417xfs_bmap_del_free(
3418 xfs_bmap_free_t *flist,
3419 xfs_bmap_free_item_t *prev,
3420 xfs_bmap_free_item_t *free)
3421{
3422 if (prev)
3423 prev->xbfi_next = free->xbfi_next;
3424 else
3425 flist->xbf_first = free->xbfi_next;
3426 flist->xbf_count--;
3427 kmem_zone_free(xfs_bmap_free_item_zone, free);
3428}
3429
3430
3431
3432
3433
3434STATIC int
3435xfs_bmap_extents_to_btree(
3436 xfs_trans_t *tp,
3437 xfs_inode_t *ip,
3438 xfs_fsblock_t *firstblock,
3439 xfs_bmap_free_t *flist,
3440 xfs_btree_cur_t **curp,
3441 int wasdel,
3442 int *logflagsp,
3443 int whichfork)
3444{
3445 struct xfs_btree_block *ablock;
3446 xfs_buf_t *abp;
3447 xfs_alloc_arg_t args;
3448 xfs_bmbt_rec_t *arp;
3449 struct xfs_btree_block *block;
3450 xfs_btree_cur_t *cur;
3451 xfs_bmbt_rec_host_t *ep;
3452 int error;
3453 xfs_extnum_t i, cnt;
3454 xfs_ifork_t *ifp;
3455 xfs_bmbt_key_t *kp;
3456 xfs_mount_t *mp;
3457 xfs_extnum_t nextents;
3458 xfs_bmbt_ptr_t *pp;
3459
3460 ifp = XFS_IFORK_PTR(ip, whichfork);
3461 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS);
3462 ASSERT(ifp->if_ext_max ==
3463 XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
3464
3465
3466
3467 xfs_iroot_realloc(ip, 1, whichfork);
3468 ifp->if_flags |= XFS_IFBROOT;
3469
3470
3471
3472
3473 block = ifp->if_broot;
3474 block->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
3475 block->bb_level = cpu_to_be16(1);
3476 block->bb_numrecs = cpu_to_be16(1);
3477 block->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
3478 block->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
3479
3480
3481
3482
3483 mp = ip->i_mount;
3484 cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
3485 cur->bc_private.b.firstblock = *firstblock;
3486 cur->bc_private.b.flist = flist;
3487 cur->bc_private.b.flags = wasdel ? XFS_BTCUR_BPRV_WASDEL : 0;
3488
3489
3490
3491 XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_BTREE);
3492 args.tp = tp;
3493 args.mp = mp;
3494 args.firstblock = *firstblock;
3495 if (*firstblock == NULLFSBLOCK) {
3496 args.type = XFS_ALLOCTYPE_START_BNO;
3497 args.fsbno = XFS_INO_TO_FSB(mp, ip->i_ino);
3498 } else if (flist->xbf_low) {
3499 args.type = XFS_ALLOCTYPE_START_BNO;
3500 args.fsbno = *firstblock;
3501 } else {
3502 args.type = XFS_ALLOCTYPE_NEAR_BNO;
3503 args.fsbno = *firstblock;
3504 }
3505 args.minlen = args.maxlen = args.prod = 1;
3506 args.total = args.minleft = args.alignment = args.mod = args.isfl =
3507 args.minalignslop = 0;
3508 args.wasdel = wasdel;
3509 *logflagsp = 0;
3510 if ((error = xfs_alloc_vextent(&args))) {
3511 xfs_iroot_realloc(ip, -1, whichfork);
3512 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
3513 return error;
3514 }
3515
3516
3517
3518 ASSERT(args.fsbno != NULLFSBLOCK);
3519 ASSERT(*firstblock == NULLFSBLOCK ||
3520 args.agno == XFS_FSB_TO_AGNO(mp, *firstblock) ||
3521 (flist->xbf_low &&
3522 args.agno > XFS_FSB_TO_AGNO(mp, *firstblock)));
3523 *firstblock = cur->bc_private.b.firstblock = args.fsbno;
3524 cur->bc_private.b.allocated++;
3525 ip->i_d.di_nblocks++;
3526 xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, 1L);
3527 abp = xfs_btree_get_bufl(mp, tp, args.fsbno, 0);
3528
3529
3530
3531 ablock = XFS_BUF_TO_BLOCK(abp);
3532 ablock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
3533 ablock->bb_level = 0;
3534 ablock->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
3535 ablock->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
3536 arp = XFS_BMBT_REC_ADDR(mp, ablock, 1);
3537 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
3538 for (cnt = i = 0; i < nextents; i++) {
3539 ep = xfs_iext_get_ext(ifp, i);
3540 if (!isnullstartblock(xfs_bmbt_get_startblock(ep))) {
3541 arp->l0 = cpu_to_be64(ep->l0);
3542 arp->l1 = cpu_to_be64(ep->l1);
3543 arp++; cnt++;
3544 }
3545 }
3546 ASSERT(cnt == XFS_IFORK_NEXTENTS(ip, whichfork));
3547 xfs_btree_set_numrecs(ablock, cnt);
3548
3549
3550
3551
3552 kp = XFS_BMBT_KEY_ADDR(mp, block, 1);
3553 arp = XFS_BMBT_REC_ADDR(mp, ablock, 1);
3554 kp->br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(arp));
3555 pp = XFS_BMBT_PTR_ADDR(mp, block, 1, xfs_bmbt_get_maxrecs(cur,
3556 be16_to_cpu(block->bb_level)));
3557 *pp = cpu_to_be64(args.fsbno);
3558
3559
3560
3561
3562
3563 xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS);
3564 xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs));
3565 ASSERT(*curp == NULL);
3566 *curp = cur;
3567 *logflagsp = XFS_ILOG_CORE | xfs_ilog_fbroot(whichfork);
3568 return 0;
3569}
3570
3571
3572
3573
3574uint
3575xfs_default_attroffset(
3576 struct xfs_inode *ip)
3577{
3578 struct xfs_mount *mp = ip->i_mount;
3579 uint offset;
3580
3581 if (mp->m_sb.sb_inodesize == 256) {
3582 offset = XFS_LITINO(mp) -
3583 XFS_BMDR_SPACE_CALC(MINABTPTRS);
3584 } else {
3585 offset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS);
3586 }
3587
3588 ASSERT(offset < XFS_LITINO(mp));
3589 return offset;
3590}
3591
3592
3593
3594
3595
3596
3597STATIC void
3598xfs_bmap_forkoff_reset(
3599 xfs_mount_t *mp,
3600 xfs_inode_t *ip,
3601 int whichfork)
3602{
3603 if (whichfork == XFS_ATTR_FORK &&
3604 ip->i_d.di_format != XFS_DINODE_FMT_DEV &&
3605 ip->i_d.di_format != XFS_DINODE_FMT_UUID &&
3606 ip->i_d.di_format != XFS_DINODE_FMT_BTREE) {
3607 uint dfl_forkoff = xfs_default_attroffset(ip) >> 3;
3608
3609 if (dfl_forkoff > ip->i_d.di_forkoff) {
3610 ip->i_d.di_forkoff = dfl_forkoff;
3611 ip->i_df.if_ext_max =
3612 XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t);
3613 ip->i_afp->if_ext_max =
3614 XFS_IFORK_ASIZE(ip) / sizeof(xfs_bmbt_rec_t);
3615 }
3616 }
3617}
3618
3619
3620
3621
3622
3623
3624
3625STATIC int
3626xfs_bmap_local_to_extents(
3627 xfs_trans_t *tp,
3628 xfs_inode_t *ip,
3629 xfs_fsblock_t *firstblock,
3630 xfs_extlen_t total,
3631 int *logflagsp,
3632 int whichfork)
3633{
3634 int error;
3635 int flags;
3636 xfs_ifork_t *ifp;
3637
3638
3639
3640
3641
3642 ASSERT(!((ip->i_d.di_mode & S_IFMT) == S_IFREG &&
3643 whichfork == XFS_DATA_FORK));
3644 ifp = XFS_IFORK_PTR(ip, whichfork);
3645 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL);
3646 flags = 0;
3647 error = 0;
3648 if (ifp->if_bytes) {
3649 xfs_alloc_arg_t args;
3650 xfs_buf_t *bp;
3651 xfs_bmbt_rec_host_t *ep;
3652
3653 args.tp = tp;
3654 args.mp = ip->i_mount;
3655 args.firstblock = *firstblock;
3656 ASSERT((ifp->if_flags &
3657 (XFS_IFINLINE|XFS_IFEXTENTS|XFS_IFEXTIREC)) == XFS_IFINLINE);
3658
3659
3660
3661
3662 if (*firstblock == NULLFSBLOCK) {
3663 args.fsbno = XFS_INO_TO_FSB(args.mp, ip->i_ino);
3664 args.type = XFS_ALLOCTYPE_START_BNO;
3665 } else {
3666 args.fsbno = *firstblock;
3667 args.type = XFS_ALLOCTYPE_NEAR_BNO;
3668 }
3669 args.total = total;
3670 args.mod = args.minleft = args.alignment = args.wasdel =
3671 args.isfl = args.minalignslop = 0;
3672 args.minlen = args.maxlen = args.prod = 1;
3673 if ((error = xfs_alloc_vextent(&args)))
3674 goto done;
3675
3676
3677
3678 ASSERT(args.fsbno != NULLFSBLOCK);
3679 ASSERT(args.len == 1);
3680 *firstblock = args.fsbno;
3681 bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0);
3682 memcpy((char *)XFS_BUF_PTR(bp), ifp->if_u1.if_data,
3683 ifp->if_bytes);
3684 xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
3685 xfs_bmap_forkoff_reset(args.mp, ip, whichfork);
3686 xfs_idata_realloc(ip, -ifp->if_bytes, whichfork);
3687 xfs_iext_add(ifp, 0, 1);
3688 ep = xfs_iext_get_ext(ifp, 0);
3689 xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM);
3690 XFS_BMAP_TRACE_POST_UPDATE("new", ip, 0, whichfork);
3691 XFS_IFORK_NEXT_SET(ip, whichfork, 1);
3692 ip->i_d.di_nblocks = 1;
3693 xfs_trans_mod_dquot_byino(tp, ip,
3694 XFS_TRANS_DQ_BCOUNT, 1L);
3695 flags |= xfs_ilog_fext(whichfork);
3696 } else {
3697 ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0);
3698 xfs_bmap_forkoff_reset(ip->i_mount, ip, whichfork);
3699 }
3700 ifp->if_flags &= ~XFS_IFINLINE;
3701 ifp->if_flags |= XFS_IFEXTENTS;
3702 XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS);
3703 flags |= XFS_ILOG_CORE;
3704done:
3705 *logflagsp = flags;
3706 return error;
3707}
3708
3709
3710
3711
3712
3713
3714
3715
3716STATIC xfs_bmbt_rec_host_t *
3717xfs_bmap_search_multi_extents(
3718 xfs_ifork_t *ifp,
3719 xfs_fileoff_t bno,
3720 int *eofp,
3721 xfs_extnum_t *lastxp,
3722 xfs_bmbt_irec_t *gotp,
3723 xfs_bmbt_irec_t *prevp)
3724{
3725 xfs_bmbt_rec_host_t *ep;
3726 xfs_extnum_t lastx;
3727
3728
3729
3730
3731
3732 gotp->br_startoff = 0xffa5a5a5a5a5a5a5LL;
3733 gotp->br_blockcount = 0xa55a5a5a5a5a5a5aLL;
3734 gotp->br_state = XFS_EXT_INVALID;
3735#if XFS_BIG_BLKNOS
3736 gotp->br_startblock = 0xffffa5a5a5a5a5a5LL;
3737#else
3738 gotp->br_startblock = 0xffffa5a5;
3739#endif
3740 prevp->br_startoff = NULLFILEOFF;
3741
3742 ep = xfs_iext_bno_to_ext(ifp, bno, &lastx);
3743 if (lastx > 0) {
3744 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, lastx - 1), prevp);
3745 }
3746 if (lastx < (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))) {
3747 xfs_bmbt_get_all(ep, gotp);
3748 *eofp = 0;
3749 } else {
3750 if (lastx > 0) {
3751 *gotp = *prevp;
3752 }
3753 *eofp = 1;
3754 ep = NULL;
3755 }
3756 *lastxp = lastx;
3757 return ep;
3758}
3759
3760
3761
3762
3763
3764
3765
3766
3767STATIC xfs_bmbt_rec_host_t *
3768xfs_bmap_search_extents(
3769 xfs_inode_t *ip,
3770 xfs_fileoff_t bno,
3771 int fork,
3772 int *eofp,
3773 xfs_extnum_t *lastxp,
3774 xfs_bmbt_irec_t *gotp,
3775 xfs_bmbt_irec_t *prevp)
3776{
3777 xfs_ifork_t *ifp;
3778 xfs_bmbt_rec_host_t *ep;
3779
3780 XFS_STATS_INC(xs_look_exlist);
3781 ifp = XFS_IFORK_PTR(ip, fork);
3782
3783 ep = xfs_bmap_search_multi_extents(ifp, bno, eofp, lastxp, gotp, prevp);
3784
3785 if (unlikely(!(gotp->br_startblock) && (*lastxp != NULLEXTNUM) &&
3786 !(XFS_IS_REALTIME_INODE(ip) && fork == XFS_DATA_FORK))) {
3787 xfs_cmn_err(XFS_PTAG_FSBLOCK_ZERO, CE_ALERT, ip->i_mount,
3788 "Access to block zero in inode %llu "
3789 "start_block: %llx start_off: %llx "
3790 "blkcnt: %llx extent-state: %x lastx: %x\n",
3791 (unsigned long long)ip->i_ino,
3792 (unsigned long long)gotp->br_startblock,
3793 (unsigned long long)gotp->br_startoff,
3794 (unsigned long long)gotp->br_blockcount,
3795 gotp->br_state, *lastxp);
3796 *lastxp = NULLEXTNUM;
3797 *eofp = 1;
3798 return NULL;
3799 }
3800 return ep;
3801}
3802
3803
3804#ifdef XFS_BMAP_TRACE
3805ktrace_t *xfs_bmap_trace_buf;
3806
3807
3808
3809
3810STATIC void
3811xfs_bmap_trace_addentry(
3812 int opcode,
3813 const char *fname,
3814 char *desc,
3815 xfs_inode_t *ip,
3816 xfs_extnum_t idx,
3817 xfs_extnum_t cnt,
3818 xfs_bmbt_rec_host_t *r1,
3819 xfs_bmbt_rec_host_t *r2,
3820 int whichfork)
3821{
3822 xfs_bmbt_rec_host_t tr2;
3823
3824 ASSERT(cnt == 1 || cnt == 2);
3825 ASSERT(r1 != NULL);
3826 if (cnt == 1) {
3827 ASSERT(r2 == NULL);
3828 r2 = &tr2;
3829 memset(&tr2, 0, sizeof(tr2));
3830 } else
3831 ASSERT(r2 != NULL);
3832 ktrace_enter(xfs_bmap_trace_buf,
3833 (void *)(__psint_t)(opcode | (whichfork << 16)),
3834 (void *)fname, (void *)desc, (void *)ip,
3835 (void *)(__psint_t)idx,
3836 (void *)(__psint_t)cnt,
3837 (void *)(__psunsigned_t)(ip->i_ino >> 32),
3838 (void *)(__psunsigned_t)(unsigned)ip->i_ino,
3839 (void *)(__psunsigned_t)(r1->l0 >> 32),
3840 (void *)(__psunsigned_t)(unsigned)(r1->l0),
3841 (void *)(__psunsigned_t)(r1->l1 >> 32),
3842 (void *)(__psunsigned_t)(unsigned)(r1->l1),
3843 (void *)(__psunsigned_t)(r2->l0 >> 32),
3844 (void *)(__psunsigned_t)(unsigned)(r2->l0),
3845 (void *)(__psunsigned_t)(r2->l1 >> 32),
3846 (void *)(__psunsigned_t)(unsigned)(r2->l1)
3847 );
3848 ASSERT(ip->i_xtrace);
3849 ktrace_enter(ip->i_xtrace,
3850 (void *)(__psint_t)(opcode | (whichfork << 16)),
3851 (void *)fname, (void *)desc, (void *)ip,
3852 (void *)(__psint_t)idx,
3853 (void *)(__psint_t)cnt,
3854 (void *)(__psunsigned_t)(ip->i_ino >> 32),
3855 (void *)(__psunsigned_t)(unsigned)ip->i_ino,
3856 (void *)(__psunsigned_t)(r1->l0 >> 32),
3857 (void *)(__psunsigned_t)(unsigned)(r1->l0),
3858 (void *)(__psunsigned_t)(r1->l1 >> 32),
3859 (void *)(__psunsigned_t)(unsigned)(r1->l1),
3860 (void *)(__psunsigned_t)(r2->l0 >> 32),
3861 (void *)(__psunsigned_t)(unsigned)(r2->l0),
3862 (void *)(__psunsigned_t)(r2->l1 >> 32),
3863 (void *)(__psunsigned_t)(unsigned)(r2->l1)
3864 );
3865}
3866
3867
3868
3869
3870STATIC void
3871xfs_bmap_trace_delete(
3872 const char *fname,
3873 char *desc,
3874 xfs_inode_t *ip,
3875 xfs_extnum_t idx,
3876 xfs_extnum_t cnt,
3877 int whichfork)
3878{
3879 xfs_ifork_t *ifp;
3880
3881 ifp = XFS_IFORK_PTR(ip, whichfork);
3882 xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_DELETE, fname, desc, ip, idx,
3883 cnt, xfs_iext_get_ext(ifp, idx),
3884 cnt == 2 ? xfs_iext_get_ext(ifp, idx + 1) : NULL,
3885 whichfork);
3886}
3887
3888
3889
3890
3891
3892STATIC void
3893xfs_bmap_trace_insert(
3894 const char *fname,
3895 char *desc,
3896 xfs_inode_t *ip,
3897 xfs_extnum_t idx,
3898 xfs_extnum_t cnt,
3899 xfs_bmbt_irec_t *r1,
3900 xfs_bmbt_irec_t *r2,
3901 int whichfork)
3902{
3903 xfs_bmbt_rec_host_t tr1;
3904 xfs_bmbt_rec_host_t tr2;
3905
3906 xfs_bmbt_set_all(&tr1, r1);
3907 if (cnt == 2) {
3908 ASSERT(r2 != NULL);
3909 xfs_bmbt_set_all(&tr2, r2);
3910 } else {
3911 ASSERT(cnt == 1);
3912 ASSERT(r2 == NULL);
3913 }
3914 xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_INSERT, fname, desc, ip, idx,
3915 cnt, &tr1, cnt == 2 ? &tr2 : NULL, whichfork);
3916}
3917
3918
3919
3920
3921STATIC void
3922xfs_bmap_trace_post_update(
3923 const char *fname,
3924 char *desc,
3925 xfs_inode_t *ip,
3926 xfs_extnum_t idx,
3927 int whichfork)
3928{
3929 xfs_ifork_t *ifp;
3930
3931 ifp = XFS_IFORK_PTR(ip, whichfork);
3932 xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_POST_UP, fname, desc, ip, idx,
3933 1, xfs_iext_get_ext(ifp, idx), NULL, whichfork);
3934}
3935
3936
3937
3938
3939STATIC void
3940xfs_bmap_trace_pre_update(
3941 const char *fname,
3942 char *desc,
3943 xfs_inode_t *ip,
3944 xfs_extnum_t idx,
3945 int whichfork)
3946{
3947 xfs_ifork_t *ifp;
3948
3949 ifp = XFS_IFORK_PTR(ip, whichfork);
3950 xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_PRE_UP, fname, desc, ip, idx, 1,
3951 xfs_iext_get_ext(ifp, idx), NULL, whichfork);
3952}
3953#endif
3954
3955
3956
3957
3958
3959STATIC xfs_filblks_t
3960xfs_bmap_worst_indlen(
3961 xfs_inode_t *ip,
3962 xfs_filblks_t len)
3963{
3964 int level;
3965 int maxrecs;
3966 xfs_mount_t *mp;
3967 xfs_filblks_t rval;
3968
3969 mp = ip->i_mount;
3970 maxrecs = mp->m_bmap_dmxr[0];
3971 for (level = 0, rval = 0;
3972 level < XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK);
3973 level++) {
3974 len += maxrecs - 1;
3975 do_div(len, maxrecs);
3976 rval += len;
3977 if (len == 1)
3978 return rval + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) -
3979 level - 1;
3980 if (level == 0)
3981 maxrecs = mp->m_bmap_dmxr[1];
3982 }
3983 return rval;
3984}
3985
3986#if defined(XFS_RW_TRACE)
3987STATIC void
3988xfs_bunmap_trace(
3989 xfs_inode_t *ip,
3990 xfs_fileoff_t bno,
3991 xfs_filblks_t len,
3992 int flags,
3993 inst_t *ra)
3994{
3995 if (ip->i_rwtrace == NULL)
3996 return;
3997 ktrace_enter(ip->i_rwtrace,
3998 (void *)(__psint_t)XFS_BUNMAP,
3999 (void *)ip,
4000 (void *)(__psint_t)((ip->i_d.di_size >> 32) & 0xffffffff),
4001 (void *)(__psint_t)(ip->i_d.di_size & 0xffffffff),
4002 (void *)(__psint_t)(((xfs_dfiloff_t)bno >> 32) & 0xffffffff),
4003 (void *)(__psint_t)((xfs_dfiloff_t)bno & 0xffffffff),
4004 (void *)(__psint_t)len,
4005 (void *)(__psint_t)flags,
4006 (void *)(unsigned long)current_cpu(),
4007 (void *)ra,
4008 (void *)0,
4009 (void *)0,
4010 (void *)0,
4011 (void *)0,
4012 (void *)0,
4013 (void *)0);
4014}
4015#endif
4016
4017
4018
4019
4020
4021int
4022xfs_bmap_add_attrfork(
4023 xfs_inode_t *ip,
4024 int size,
4025 int rsvd)
4026{
4027 xfs_fsblock_t firstblock;
4028 xfs_bmap_free_t flist;
4029 xfs_mount_t *mp;
4030 xfs_trans_t *tp;
4031 int blks;
4032 int version = 1;
4033 int committed;
4034 int logflags;
4035 int error;
4036
4037 ASSERT(XFS_IFORK_Q(ip) == 0);
4038 ASSERT(ip->i_df.if_ext_max ==
4039 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
4040
4041 mp = ip->i_mount;
4042 ASSERT(!XFS_NOT_DQATTACHED(mp, ip));
4043 tp = xfs_trans_alloc(mp, XFS_TRANS_ADDAFORK);
4044 blks = XFS_ADDAFORK_SPACE_RES(mp);
4045 if (rsvd)
4046 tp->t_flags |= XFS_TRANS_RESERVE;
4047 if ((error = xfs_trans_reserve(tp, blks, XFS_ADDAFORK_LOG_RES(mp), 0,
4048 XFS_TRANS_PERM_LOG_RES, XFS_ADDAFORK_LOG_COUNT)))
4049 goto error0;
4050 xfs_ilock(ip, XFS_ILOCK_EXCL);
4051 error = xfs_trans_reserve_quota_nblks(tp, ip, blks, 0, rsvd ?
4052 XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES :
4053 XFS_QMOPT_RES_REGBLKS);
4054 if (error) {
4055 xfs_iunlock(ip, XFS_ILOCK_EXCL);
4056 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES);
4057 return error;
4058 }
4059 if (XFS_IFORK_Q(ip))
4060 goto error1;
4061 if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS) {
4062
4063
4064
4065 ASSERT(ip->i_d.di_aformat == 0);
4066 ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
4067 }
4068 ASSERT(ip->i_d.di_anextents == 0);
4069 IHOLD(ip);
4070 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
4071 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
4072 switch (ip->i_d.di_format) {
4073 case XFS_DINODE_FMT_DEV:
4074 ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3;
4075 break;
4076 case XFS_DINODE_FMT_UUID:
4077 ip->i_d.di_forkoff = roundup(sizeof(uuid_t), 8) >> 3;
4078 break;
4079 case XFS_DINODE_FMT_LOCAL:
4080 case XFS_DINODE_FMT_EXTENTS:
4081 case XFS_DINODE_FMT_BTREE:
4082 ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size);
4083 if (!ip->i_d.di_forkoff)
4084 ip->i_d.di_forkoff = xfs_default_attroffset(ip) >> 3;
4085 else if (mp->m_flags & XFS_MOUNT_ATTR2)
4086 version = 2;
4087 break;
4088 default:
4089 ASSERT(0);
4090 error = XFS_ERROR(EINVAL);
4091 goto error1;
4092 }
4093 ip->i_df.if_ext_max =
4094 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
4095 ASSERT(ip->i_afp == NULL);
4096 ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP);
4097 ip->i_afp->if_ext_max =
4098 XFS_IFORK_ASIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
4099 ip->i_afp->if_flags = XFS_IFEXTENTS;
4100 logflags = 0;
4101 xfs_bmap_init(&flist, &firstblock);
4102 switch (ip->i_d.di_format) {
4103 case XFS_DINODE_FMT_LOCAL:
4104 error = xfs_bmap_add_attrfork_local(tp, ip, &firstblock, &flist,
4105 &logflags);
4106 break;
4107 case XFS_DINODE_FMT_EXTENTS:
4108 error = xfs_bmap_add_attrfork_extents(tp, ip, &firstblock,
4109 &flist, &logflags);
4110 break;
4111 case XFS_DINODE_FMT_BTREE:
4112 error = xfs_bmap_add_attrfork_btree(tp, ip, &firstblock, &flist,
4113 &logflags);
4114 break;
4115 default:
4116 error = 0;
4117 break;
4118 }
4119 if (logflags)
4120 xfs_trans_log_inode(tp, ip, logflags);
4121 if (error)
4122 goto error2;
4123 if (!xfs_sb_version_hasattr(&mp->m_sb) ||
4124 (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) {
4125 __int64_t sbfields = 0;
4126
4127 spin_lock(&mp->m_sb_lock);
4128 if (!xfs_sb_version_hasattr(&mp->m_sb)) {
4129 xfs_sb_version_addattr(&mp->m_sb);
4130 sbfields |= XFS_SB_VERSIONNUM;
4131 }
4132 if (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2) {
4133 xfs_sb_version_addattr2(&mp->m_sb);
4134 sbfields |= (XFS_SB_VERSIONNUM | XFS_SB_FEATURES2);
4135 }
4136 if (sbfields) {
4137 spin_unlock(&mp->m_sb_lock);
4138 xfs_mod_sb(tp, sbfields);
4139 } else
4140 spin_unlock(&mp->m_sb_lock);
4141 }
4142 if ((error = xfs_bmap_finish(&tp, &flist, &committed)))
4143 goto error2;
4144 error = xfs_trans_commit(tp, XFS_TRANS_PERM_LOG_RES);
4145 ASSERT(ip->i_df.if_ext_max ==
4146 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
4147 return error;
4148error2:
4149 xfs_bmap_cancel(&flist);
4150error1:
4151 xfs_iunlock(ip, XFS_ILOCK_EXCL);
4152error0:
4153 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
4154 ASSERT(ip->i_df.if_ext_max ==
4155 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
4156 return error;
4157}
4158
4159
4160
4161
4162
4163
4164void
4165xfs_bmap_add_free(
4166 xfs_fsblock_t bno,
4167 xfs_filblks_t len,
4168 xfs_bmap_free_t *flist,
4169 xfs_mount_t *mp)
4170{
4171 xfs_bmap_free_item_t *cur;
4172 xfs_bmap_free_item_t *new;
4173 xfs_bmap_free_item_t *prev;
4174#ifdef DEBUG
4175 xfs_agnumber_t agno;
4176 xfs_agblock_t agbno;
4177
4178 ASSERT(bno != NULLFSBLOCK);
4179 ASSERT(len > 0);
4180 ASSERT(len <= MAXEXTLEN);
4181 ASSERT(!isnullstartblock(bno));
4182 agno = XFS_FSB_TO_AGNO(mp, bno);
4183 agbno = XFS_FSB_TO_AGBNO(mp, bno);
4184 ASSERT(agno < mp->m_sb.sb_agcount);
4185 ASSERT(agbno < mp->m_sb.sb_agblocks);
4186 ASSERT(len < mp->m_sb.sb_agblocks);
4187 ASSERT(agbno + len <= mp->m_sb.sb_agblocks);
4188#endif
4189 ASSERT(xfs_bmap_free_item_zone != NULL);
4190 new = kmem_zone_alloc(xfs_bmap_free_item_zone, KM_SLEEP);
4191 new->xbfi_startblock = bno;
4192 new->xbfi_blockcount = (xfs_extlen_t)len;
4193 for (prev = NULL, cur = flist->xbf_first;
4194 cur != NULL;
4195 prev = cur, cur = cur->xbfi_next) {
4196 if (cur->xbfi_startblock >= bno)
4197 break;
4198 }
4199 if (prev)
4200 prev->xbfi_next = new;
4201 else
4202 flist->xbf_first = new;
4203 new->xbfi_next = cur;
4204 flist->xbf_count++;
4205}
4206
4207
4208
4209
4210
4211void
4212xfs_bmap_compute_maxlevels(
4213 xfs_mount_t *mp,
4214 int whichfork)
4215{
4216 int level;
4217 uint maxblocks;
4218 uint maxleafents;
4219 int maxrootrecs;
4220 int minleafrecs;
4221 int minnoderecs;
4222 int sz;
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238 if (whichfork == XFS_DATA_FORK) {
4239 maxleafents = MAXEXTNUM;
4240 sz = XFS_BMDR_SPACE_CALC(MINDBTPTRS);
4241 } else {
4242 maxleafents = MAXAEXTNUM;
4243 sz = XFS_BMDR_SPACE_CALC(MINABTPTRS);
4244 }
4245 maxrootrecs = xfs_bmdr_maxrecs(mp, sz, 0);
4246 minleafrecs = mp->m_bmap_dmnr[0];
4247 minnoderecs = mp->m_bmap_dmnr[1];
4248 maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs;
4249 for (level = 1; maxblocks > 1; level++) {
4250 if (maxblocks <= maxrootrecs)
4251 maxblocks = 1;
4252 else
4253 maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs;
4254 }
4255 mp->m_bm_maxlevels[whichfork] = level;
4256}
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275int
4276xfs_bmap_finish(
4277 xfs_trans_t **tp,
4278 xfs_bmap_free_t *flist,
4279 int *committed)
4280{
4281 xfs_efd_log_item_t *efd;
4282 xfs_efi_log_item_t *efi;
4283 int error;
4284 xfs_bmap_free_item_t *free;
4285 unsigned int logres;
4286 unsigned int logcount;
4287 xfs_mount_t *mp;
4288 xfs_bmap_free_item_t *next;
4289 xfs_trans_t *ntp;
4290
4291 ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES);
4292 if (flist->xbf_count == 0) {
4293 *committed = 0;
4294 return 0;
4295 }
4296 ntp = *tp;
4297 efi = xfs_trans_get_efi(ntp, flist->xbf_count);
4298 for (free = flist->xbf_first; free; free = free->xbfi_next)
4299 xfs_trans_log_efi_extent(ntp, efi, free->xbfi_startblock,
4300 free->xbfi_blockcount);
4301 logres = ntp->t_log_res;
4302 logcount = ntp->t_log_count;
4303 ntp = xfs_trans_dup(*tp);
4304 error = xfs_trans_commit(*tp, 0);
4305 *tp = ntp;
4306 *committed = 1;
4307
4308
4309
4310
4311 if (error)
4312 return error;
4313
4314
4315
4316
4317
4318 xfs_log_ticket_put(ntp->t_ticket);
4319
4320 if ((error = xfs_trans_reserve(ntp, 0, logres, 0, XFS_TRANS_PERM_LOG_RES,
4321 logcount)))
4322 return error;
4323 efd = xfs_trans_get_efd(ntp, efi, flist->xbf_count);
4324 for (free = flist->xbf_first; free != NULL; free = next) {
4325 next = free->xbfi_next;
4326 if ((error = xfs_free_extent(ntp, free->xbfi_startblock,
4327 free->xbfi_blockcount))) {
4328
4329
4330
4331
4332
4333
4334
4335
4336 mp = ntp->t_mountp;
4337 if (!XFS_FORCED_SHUTDOWN(mp))
4338 xfs_force_shutdown(mp,
4339 (error == EFSCORRUPTED) ?
4340 SHUTDOWN_CORRUPT_INCORE :
4341 SHUTDOWN_META_IO_ERROR);
4342 return error;
4343 }
4344 xfs_trans_log_efd_extent(ntp, efd, free->xbfi_startblock,
4345 free->xbfi_blockcount);
4346 xfs_bmap_del_free(flist, NULL, free);
4347 }
4348 return 0;
4349}
4350
4351
4352
4353
4354void
4355xfs_bmap_cancel(
4356 xfs_bmap_free_t *flist)
4357{
4358 xfs_bmap_free_item_t *free;
4359 xfs_bmap_free_item_t *next;
4360
4361 if (flist->xbf_count == 0)
4362 return;
4363 ASSERT(flist->xbf_first != NULL);
4364 for (free = flist->xbf_first; free; free = next) {
4365 next = free->xbfi_next;
4366 xfs_bmap_del_free(flist, NULL, free);
4367 }
4368 ASSERT(flist->xbf_count == 0);
4369}
4370
4371
4372
4373
4374
4375
4376
4377
4378int
4379xfs_bmap_first_unused(
4380 xfs_trans_t *tp,
4381 xfs_inode_t *ip,
4382 xfs_extlen_t len,
4383 xfs_fileoff_t *first_unused,
4384 int whichfork)
4385{
4386 int error;
4387 int idx;
4388 xfs_ifork_t *ifp;
4389 xfs_fileoff_t lastaddr;
4390 xfs_fileoff_t lowest;
4391 xfs_fileoff_t max;
4392 xfs_fileoff_t off;
4393 xfs_extnum_t nextents;
4394
4395 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE ||
4396 XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS ||
4397 XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL);
4398 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) {
4399 *first_unused = 0;
4400 return 0;
4401 }
4402 ifp = XFS_IFORK_PTR(ip, whichfork);
4403 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
4404 (error = xfs_iread_extents(tp, ip, whichfork)))
4405 return error;
4406 lowest = *first_unused;
4407 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
4408 for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) {
4409 xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx);
4410 off = xfs_bmbt_get_startoff(ep);
4411
4412
4413
4414 if (off >= lowest + len && off - max >= len) {
4415 *first_unused = max;
4416 return 0;
4417 }
4418 lastaddr = off + xfs_bmbt_get_blockcount(ep);
4419 max = XFS_FILEOFF_MAX(lastaddr, lowest);
4420 }
4421 *first_unused = max;
4422 return 0;
4423}
4424
4425
4426
4427
4428
4429
4430
4431int
4432xfs_bmap_last_before(
4433 xfs_trans_t *tp,
4434 xfs_inode_t *ip,
4435 xfs_fileoff_t *last_block,
4436 int whichfork)
4437{
4438 xfs_fileoff_t bno;
4439 int eof;
4440 xfs_bmbt_rec_host_t *ep;
4441 int error;
4442 xfs_bmbt_irec_t got;
4443 xfs_ifork_t *ifp;
4444 xfs_extnum_t lastx;
4445 xfs_bmbt_irec_t prev;
4446
4447 if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE &&
4448 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
4449 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL)
4450 return XFS_ERROR(EIO);
4451 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) {
4452 *last_block = 0;
4453 return 0;
4454 }
4455 ifp = XFS_IFORK_PTR(ip, whichfork);
4456 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
4457 (error = xfs_iread_extents(tp, ip, whichfork)))
4458 return error;
4459 bno = *last_block - 1;
4460 ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,
4461 &prev);
4462 if (eof || xfs_bmbt_get_startoff(ep) > bno) {
4463 if (prev.br_startoff == NULLFILEOFF)
4464 *last_block = 0;
4465 else
4466 *last_block = prev.br_startoff + prev.br_blockcount;
4467 }
4468
4469
4470
4471 return 0;
4472}
4473
4474
4475
4476
4477
4478
4479int
4480xfs_bmap_last_offset(
4481 xfs_trans_t *tp,
4482 xfs_inode_t *ip,
4483 xfs_fileoff_t *last_block,
4484 int whichfork)
4485{
4486 xfs_bmbt_rec_host_t *ep;
4487 int error;
4488 xfs_ifork_t *ifp;
4489 xfs_extnum_t nextents;
4490
4491 if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE &&
4492 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
4493 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL)
4494 return XFS_ERROR(EIO);
4495 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) {
4496 *last_block = 0;
4497 return 0;
4498 }
4499 ifp = XFS_IFORK_PTR(ip, whichfork);
4500 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
4501 (error = xfs_iread_extents(tp, ip, whichfork)))
4502 return error;
4503 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
4504 if (!nextents) {
4505 *last_block = 0;
4506 return 0;
4507 }
4508 ep = xfs_iext_get_ext(ifp, nextents - 1);
4509 *last_block = xfs_bmbt_get_startoff(ep) + xfs_bmbt_get_blockcount(ep);
4510 return 0;
4511}
4512
4513
4514
4515
4516
4517
4518int
4519xfs_bmap_one_block(
4520 xfs_inode_t *ip,
4521 int whichfork)
4522{
4523 xfs_bmbt_rec_host_t *ep;
4524 xfs_ifork_t *ifp;
4525 int rval;
4526 xfs_bmbt_irec_t s;
4527
4528#ifndef DEBUG
4529 if (whichfork == XFS_DATA_FORK) {
4530 return ((ip->i_d.di_mode & S_IFMT) == S_IFREG) ?
4531 (ip->i_size == ip->i_mount->m_sb.sb_blocksize) :
4532 (ip->i_d.di_size == ip->i_mount->m_sb.sb_blocksize);
4533 }
4534#endif
4535 if (XFS_IFORK_NEXTENTS(ip, whichfork) != 1)
4536 return 0;
4537 if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS)
4538 return 0;
4539 ifp = XFS_IFORK_PTR(ip, whichfork);
4540 ASSERT(ifp->if_flags & XFS_IFEXTENTS);
4541 ep = xfs_iext_get_ext(ifp, 0);
4542 xfs_bmbt_get_all(ep, &s);
4543 rval = s.br_startoff == 0 && s.br_blockcount == 1;
4544 if (rval && whichfork == XFS_DATA_FORK)
4545 ASSERT(ip->i_size == ip->i_mount->m_sb.sb_blocksize);
4546 return rval;
4547}
4548
4549STATIC int
4550xfs_bmap_sanity_check(
4551 struct xfs_mount *mp,
4552 struct xfs_buf *bp,
4553 int level)
4554{
4555 struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
4556
4557 if (be32_to_cpu(block->bb_magic) != XFS_BMAP_MAGIC ||
4558 be16_to_cpu(block->bb_level) != level ||
4559 be16_to_cpu(block->bb_numrecs) == 0 ||
4560 be16_to_cpu(block->bb_numrecs) > mp->m_bmap_dmxr[level != 0])
4561 return 0;
4562 return 1;
4563}
4564
4565
4566
4567
4568
4569
4570
4571int
4572xfs_bmap_read_extents(
4573 xfs_trans_t *tp,
4574 xfs_inode_t *ip,
4575 int whichfork)
4576{
4577 struct xfs_btree_block *block;
4578 xfs_fsblock_t bno;
4579 xfs_buf_t *bp;
4580 int error;
4581 xfs_exntfmt_t exntf;
4582 xfs_extnum_t i, j;
4583 xfs_ifork_t *ifp;
4584 int level;
4585 xfs_mount_t *mp;
4586 __be64 *pp;
4587
4588 xfs_extnum_t room;
4589
4590 bno = NULLFSBLOCK;
4591 mp = ip->i_mount;
4592 ifp = XFS_IFORK_PTR(ip, whichfork);
4593 exntf = (whichfork != XFS_DATA_FORK) ? XFS_EXTFMT_NOSTATE :
4594 XFS_EXTFMT_INODE(ip);
4595 block = ifp->if_broot;
4596
4597
4598
4599 level = be16_to_cpu(block->bb_level);
4600 ASSERT(level > 0);
4601 pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
4602 bno = be64_to_cpu(*pp);
4603 ASSERT(bno != NULLDFSBNO);
4604 ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
4605 ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks);
4606
4607
4608
4609
4610 while (level-- > 0) {
4611 if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
4612 XFS_BMAP_BTREE_REF)))
4613 return error;
4614 block = XFS_BUF_TO_BLOCK(bp);
4615 XFS_WANT_CORRUPTED_GOTO(
4616 xfs_bmap_sanity_check(mp, bp, level),
4617 error0);
4618 if (level == 0)
4619 break;
4620 pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]);
4621 bno = be64_to_cpu(*pp);
4622 XFS_WANT_CORRUPTED_GOTO(XFS_FSB_SANITY_CHECK(mp, bno), error0);
4623 xfs_trans_brelse(tp, bp);
4624 }
4625
4626
4627
4628 room = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
4629 i = 0;
4630
4631
4632
4633 for (;;) {
4634 xfs_bmbt_rec_t *frp;
4635 xfs_fsblock_t nextbno;
4636 xfs_extnum_t num_recs;
4637 xfs_extnum_t start;
4638
4639
4640 num_recs = xfs_btree_get_numrecs(block);
4641 if (unlikely(i + num_recs > room)) {
4642 ASSERT(i + num_recs <= room);
4643 xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
4644 "corrupt dinode %Lu, (btree extents).",
4645 (unsigned long long) ip->i_ino);
4646 XFS_ERROR_REPORT("xfs_bmap_read_extents(1)",
4647 XFS_ERRLEVEL_LOW,
4648 ip->i_mount);
4649 goto error0;
4650 }
4651 XFS_WANT_CORRUPTED_GOTO(
4652 xfs_bmap_sanity_check(mp, bp, 0),
4653 error0);
4654
4655
4656
4657 nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
4658 if (nextbno != NULLFSBLOCK)
4659 xfs_btree_reada_bufl(mp, nextbno, 1);
4660
4661
4662
4663 frp = XFS_BMBT_REC_ADDR(mp, block, 1);
4664 start = i;
4665 for (j = 0; j < num_recs; j++, i++, frp++) {
4666 xfs_bmbt_rec_host_t *trp = xfs_iext_get_ext(ifp, i);
4667 trp->l0 = be64_to_cpu(frp->l0);
4668 trp->l1 = be64_to_cpu(frp->l1);
4669 }
4670 if (exntf == XFS_EXTFMT_NOSTATE) {
4671
4672
4673
4674
4675
4676 if (unlikely(xfs_check_nostate_extents(ifp,
4677 start, num_recs))) {
4678 XFS_ERROR_REPORT("xfs_bmap_read_extents(2)",
4679 XFS_ERRLEVEL_LOW,
4680 ip->i_mount);
4681 goto error0;
4682 }
4683 }
4684 xfs_trans_brelse(tp, bp);
4685 bno = nextbno;
4686
4687
4688
4689 if (bno == NULLFSBLOCK)
4690 break;
4691 if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
4692 XFS_BMAP_BTREE_REF)))
4693 return error;
4694 block = XFS_BUF_TO_BLOCK(bp);
4695 }
4696 ASSERT(i == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t)));
4697 ASSERT(i == XFS_IFORK_NEXTENTS(ip, whichfork));
4698 XFS_BMAP_TRACE_EXLIST(ip, i, whichfork);
4699 return 0;
4700error0:
4701 xfs_trans_brelse(tp, bp);
4702 return XFS_ERROR(EFSCORRUPTED);
4703}
4704
4705#ifdef XFS_BMAP_TRACE
4706
4707
4708
4709void
4710xfs_bmap_trace_exlist(
4711 const char *fname,
4712 xfs_inode_t *ip,
4713 xfs_extnum_t cnt,
4714 int whichfork)
4715{
4716 xfs_bmbt_rec_host_t *ep;
4717 xfs_extnum_t idx;
4718 xfs_ifork_t *ifp;
4719 xfs_bmbt_irec_t s;
4720
4721 ifp = XFS_IFORK_PTR(ip, whichfork);
4722 ASSERT(cnt == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t)));
4723 for (idx = 0; idx < cnt; idx++) {
4724 ep = xfs_iext_get_ext(ifp, idx);
4725 xfs_bmbt_get_all(ep, &s);
4726 XFS_BMAP_TRACE_INSERT("exlist", ip, idx, 1, &s, NULL,
4727 whichfork);
4728 }
4729}
4730#endif
4731
4732#ifdef DEBUG
4733
4734
4735
4736
4737
4738
4739STATIC void
4740xfs_bmap_validate_ret(
4741 xfs_fileoff_t bno,
4742 xfs_filblks_t len,
4743 int flags,
4744 xfs_bmbt_irec_t *mval,
4745 int nmap,
4746 int ret_nmap)
4747{
4748 int i;
4749
4750 ASSERT(ret_nmap <= nmap);
4751
4752 for (i = 0; i < ret_nmap; i++) {
4753 ASSERT(mval[i].br_blockcount > 0);
4754 if (!(flags & XFS_BMAPI_ENTIRE)) {
4755 ASSERT(mval[i].br_startoff >= bno);
4756 ASSERT(mval[i].br_blockcount <= len);
4757 ASSERT(mval[i].br_startoff + mval[i].br_blockcount <=
4758 bno + len);
4759 } else {
4760 ASSERT(mval[i].br_startoff < bno + len);
4761 ASSERT(mval[i].br_startoff + mval[i].br_blockcount >
4762 bno);
4763 }
4764 ASSERT(i == 0 ||
4765 mval[i - 1].br_startoff + mval[i - 1].br_blockcount ==
4766 mval[i].br_startoff);
4767 if ((flags & XFS_BMAPI_WRITE) && !(flags & XFS_BMAPI_DELAY))
4768 ASSERT(mval[i].br_startblock != DELAYSTARTBLOCK &&
4769 mval[i].br_startblock != HOLESTARTBLOCK);
4770 ASSERT(mval[i].br_state == XFS_EXT_NORM ||
4771 mval[i].br_state == XFS_EXT_UNWRITTEN);
4772 }
4773}
4774#endif
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790int
4791xfs_bmapi(
4792 xfs_trans_t *tp,
4793 xfs_inode_t *ip,
4794 xfs_fileoff_t bno,
4795 xfs_filblks_t len,
4796 int flags,
4797 xfs_fsblock_t *firstblock,
4798
4799 xfs_extlen_t total,
4800 xfs_bmbt_irec_t *mval,
4801 int *nmap,
4802 xfs_bmap_free_t *flist,
4803 xfs_extdelta_t *delta)
4804{
4805 xfs_fsblock_t abno;
4806 xfs_extlen_t alen;
4807 xfs_fileoff_t aoff;
4808 xfs_bmalloca_t bma;
4809 xfs_btree_cur_t *cur;
4810 xfs_fileoff_t end;
4811 int eof;
4812 xfs_bmbt_rec_host_t *ep;
4813 int error;
4814 xfs_bmbt_irec_t got;
4815 xfs_ifork_t *ifp;
4816 xfs_extlen_t indlen;
4817 xfs_extnum_t lastx;
4818 int logflags;
4819 xfs_extlen_t minleft;
4820 xfs_extlen_t minlen;
4821 xfs_mount_t *mp;
4822 int n;
4823 int nallocs;
4824 xfs_extnum_t nextents;
4825 xfs_fileoff_t obno;
4826 xfs_bmbt_irec_t prev;
4827 int tmp_logflags;
4828 int whichfork;
4829 char inhole;
4830 char wasdelay;
4831 char wr;
4832 char rt;
4833#ifdef DEBUG
4834 xfs_fileoff_t orig_bno;
4835 int orig_flags;
4836 xfs_filblks_t orig_len;
4837 xfs_bmbt_irec_t *orig_mval;
4838 int orig_nmap;
4839
4840 orig_bno = bno;
4841 orig_len = len;
4842 orig_flags = flags;
4843 orig_mval = mval;
4844 orig_nmap = *nmap;
4845#endif
4846 ASSERT(*nmap >= 1);
4847 ASSERT(*nmap <= XFS_BMAP_MAX_NMAP || !(flags & XFS_BMAPI_WRITE));
4848 whichfork = (flags & XFS_BMAPI_ATTRFORK) ?
4849 XFS_ATTR_FORK : XFS_DATA_FORK;
4850 mp = ip->i_mount;
4851 if (unlikely(XFS_TEST_ERROR(
4852 (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
4853 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE &&
4854 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL),
4855 mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
4856 XFS_ERROR_REPORT("xfs_bmapi", XFS_ERRLEVEL_LOW, mp);
4857 return XFS_ERROR(EFSCORRUPTED);
4858 }
4859 if (XFS_FORCED_SHUTDOWN(mp))
4860 return XFS_ERROR(EIO);
4861 rt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip);
4862 ifp = XFS_IFORK_PTR(ip, whichfork);
4863 ASSERT(ifp->if_ext_max ==
4864 XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
4865 if ((wr = (flags & XFS_BMAPI_WRITE)) != 0)
4866 XFS_STATS_INC(xs_blk_mapw);
4867 else
4868 XFS_STATS_INC(xs_blk_mapr);
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886 if ((flags & XFS_BMAPI_IGSTATE) && wr)
4887 wr = 0;
4888 ASSERT(wr || !(flags & XFS_BMAPI_DELAY));
4889 logflags = 0;
4890 nallocs = 0;
4891 cur = NULL;
4892 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) {
4893 ASSERT(wr && tp);
4894 if ((error = xfs_bmap_local_to_extents(tp, ip,
4895 firstblock, total, &logflags, whichfork)))
4896 goto error0;
4897 }
4898 if (wr && *firstblock == NULLFSBLOCK) {
4899 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE)
4900 minleft = be16_to_cpu(ifp->if_broot->bb_level) + 1;
4901 else
4902 minleft = 1;
4903 } else
4904 minleft = 0;
4905 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
4906 (error = xfs_iread_extents(tp, ip, whichfork)))
4907 goto error0;
4908 ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,
4909 &prev);
4910 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
4911 n = 0;
4912 end = bno + len;
4913 obno = bno;
4914 bma.ip = NULL;
4915 if (delta) {
4916 delta->xed_startoff = NULLFILEOFF;
4917 delta->xed_blockcount = 0;
4918 }
4919 while (bno < end && n < *nmap) {
4920
4921
4922
4923
4924 if (eof && !wr)
4925 got.br_startoff = end;
4926 inhole = eof || got.br_startoff > bno;
4927 wasdelay = wr && !inhole && !(flags & XFS_BMAPI_DELAY) &&
4928 isnullstartblock(got.br_startblock);
4929
4930
4931
4932
4933 if (wr && (inhole || wasdelay)) {
4934
4935
4936
4937
4938
4939 if (wasdelay && !(flags & XFS_BMAPI_EXACT)) {
4940 alen = (xfs_extlen_t)got.br_blockcount;
4941 aoff = got.br_startoff;
4942 if (lastx != NULLEXTNUM && lastx) {
4943 ep = xfs_iext_get_ext(ifp, lastx - 1);
4944 xfs_bmbt_get_all(ep, &prev);
4945 }
4946 } else if (wasdelay) {
4947 alen = (xfs_extlen_t)
4948 XFS_FILBLKS_MIN(len,
4949 (got.br_startoff +
4950 got.br_blockcount) - bno);
4951 aoff = bno;
4952 } else {
4953 alen = (xfs_extlen_t)
4954 XFS_FILBLKS_MIN(len, MAXEXTLEN);
4955 if (!eof)
4956 alen = (xfs_extlen_t)
4957 XFS_FILBLKS_MIN(alen,
4958 got.br_startoff - bno);
4959 aoff = bno;
4960 }
4961 minlen = (flags & XFS_BMAPI_CONTIG) ? alen : 1;
4962 if (flags & XFS_BMAPI_DELAY) {
4963 xfs_extlen_t extsz;
4964
4965
4966 extsz = xfs_get_extsz_hint(ip);
4967 if (extsz) {
4968 error = xfs_bmap_extsize_align(mp,
4969 &got, &prev, extsz,
4970 rt, eof,
4971 flags&XFS_BMAPI_DELAY,
4972 flags&XFS_BMAPI_CONVERT,
4973 &aoff, &alen);
4974 ASSERT(!error);
4975 }
4976
4977 if (rt)
4978 extsz = alen / mp->m_sb.sb_rextsize;
4979
4980
4981
4982
4983
4984
4985
4986 error = xfs_trans_reserve_quota_nblks(
4987 NULL, ip, (long)alen, 0,
4988 rt ? XFS_QMOPT_RES_RTBLKS :
4989 XFS_QMOPT_RES_REGBLKS);
4990 if (error) {
4991 if (n == 0) {
4992 *nmap = 0;
4993 ASSERT(cur == NULL);
4994 return error;
4995 }
4996 break;
4997 }
4998
4999
5000
5001
5002
5003 indlen = (xfs_extlen_t)
5004 xfs_bmap_worst_indlen(ip, alen);
5005 ASSERT(indlen > 0);
5006
5007 if (rt) {
5008 error = xfs_mod_incore_sb(mp,
5009 XFS_SBS_FREXTENTS,
5010 -((int64_t)extsz), (flags &
5011 XFS_BMAPI_RSVBLOCKS));
5012 } else {
5013 error = xfs_mod_incore_sb(mp,
5014 XFS_SBS_FDBLOCKS,
5015 -((int64_t)alen), (flags &
5016 XFS_BMAPI_RSVBLOCKS));
5017 }
5018 if (!error) {
5019 error = xfs_mod_incore_sb(mp,
5020 XFS_SBS_FDBLOCKS,
5021 -((int64_t)indlen), (flags &
5022 XFS_BMAPI_RSVBLOCKS));
5023 if (error && rt)
5024 xfs_mod_incore_sb(mp,
5025 XFS_SBS_FREXTENTS,
5026 (int64_t)extsz, (flags &
5027 XFS_BMAPI_RSVBLOCKS));
5028 else if (error)
5029 xfs_mod_incore_sb(mp,
5030 XFS_SBS_FDBLOCKS,
5031 (int64_t)alen, (flags &
5032 XFS_BMAPI_RSVBLOCKS));
5033 }
5034
5035 if (error) {
5036 if (XFS_IS_QUOTA_ON(mp))
5037
5038 (void)
5039 xfs_trans_unreserve_quota_nblks(
5040 NULL, ip,
5041 (long)alen, 0, rt ?
5042 XFS_QMOPT_RES_RTBLKS :
5043 XFS_QMOPT_RES_REGBLKS);
5044 break;
5045 }
5046
5047 ip->i_delayed_blks += alen;
5048 abno = nullstartblock(indlen);
5049 } else {
5050
5051
5052
5053
5054 if (bma.ip == NULL) {
5055 bma.tp = tp;
5056 bma.ip = ip;
5057 bma.prevp = &prev;
5058 bma.gotp = &got;
5059 bma.total = total;
5060 bma.userdata = 0;
5061 }
5062
5063
5064
5065 if (!(flags & XFS_BMAPI_METADATA)) {
5066 bma.userdata = (aoff == 0) ?
5067 XFS_ALLOC_INITIAL_USER_DATA :
5068 XFS_ALLOC_USERDATA;
5069 }
5070
5071
5072
5073 bma.eof = eof;
5074 bma.firstblock = *firstblock;
5075 bma.alen = alen;
5076 bma.off = aoff;
5077 bma.conv = !!(flags & XFS_BMAPI_CONVERT);
5078 bma.wasdel = wasdelay;
5079 bma.minlen = minlen;
5080 bma.low = flist->xbf_low;
5081 bma.minleft = minleft;
5082
5083
5084
5085
5086
5087 if (mp->m_dalign && alen >= mp->m_dalign &&
5088 (!(flags & XFS_BMAPI_METADATA)) &&
5089 (whichfork == XFS_DATA_FORK)) {
5090 if ((error = xfs_bmap_isaeof(ip, aoff,
5091 whichfork, &bma.aeof)))
5092 goto error0;
5093 } else
5094 bma.aeof = 0;
5095
5096
5097
5098 if ((error = xfs_bmap_alloc(&bma)))
5099 goto error0;
5100
5101
5102
5103 abno = bma.rval;
5104 if ((flist->xbf_low = bma.low))
5105 minleft = 0;
5106 alen = bma.alen;
5107 aoff = bma.off;
5108 ASSERT(*firstblock == NULLFSBLOCK ||
5109 XFS_FSB_TO_AGNO(mp, *firstblock) ==
5110 XFS_FSB_TO_AGNO(mp, bma.firstblock) ||
5111 (flist->xbf_low &&
5112 XFS_FSB_TO_AGNO(mp, *firstblock) <
5113 XFS_FSB_TO_AGNO(mp, bma.firstblock)));
5114 *firstblock = bma.firstblock;
5115 if (cur)
5116 cur->bc_private.b.firstblock =
5117 *firstblock;
5118 if (abno == NULLFSBLOCK)
5119 break;
5120 if ((ifp->if_flags & XFS_IFBROOT) && !cur) {
5121 cur = xfs_bmbt_init_cursor(mp, tp,
5122 ip, whichfork);
5123 cur->bc_private.b.firstblock =
5124 *firstblock;
5125 cur->bc_private.b.flist = flist;
5126 }
5127
5128
5129
5130
5131 nallocs++;
5132 }
5133 if (cur)
5134 cur->bc_private.b.flags =
5135 wasdelay ? XFS_BTCUR_BPRV_WASDEL : 0;
5136 got.br_startoff = aoff;
5137 got.br_startblock = abno;
5138 got.br_blockcount = alen;
5139 got.br_state = XFS_EXT_NORM;
5140
5141
5142
5143
5144
5145 if (wr && xfs_sb_version_hasextflgbit(&mp->m_sb)) {
5146 if (!wasdelay && (flags & XFS_BMAPI_PREALLOC))
5147 got.br_state = XFS_EXT_UNWRITTEN;
5148 }
5149 error = xfs_bmap_add_extent(ip, lastx, &cur, &got,
5150 firstblock, flist, &tmp_logflags, delta,
5151 whichfork, (flags & XFS_BMAPI_RSVBLOCKS));
5152 logflags |= tmp_logflags;
5153 if (error)
5154 goto error0;
5155 lastx = ifp->if_lastex;
5156 ep = xfs_iext_get_ext(ifp, lastx);
5157 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
5158 xfs_bmbt_get_all(ep, &got);
5159 ASSERT(got.br_startoff <= aoff);
5160 ASSERT(got.br_startoff + got.br_blockcount >=
5161 aoff + alen);
5162#ifdef DEBUG
5163 if (flags & XFS_BMAPI_DELAY) {
5164 ASSERT(isnullstartblock(got.br_startblock));
5165 ASSERT(startblockval(got.br_startblock) > 0);
5166 }
5167 ASSERT(got.br_state == XFS_EXT_NORM ||
5168 got.br_state == XFS_EXT_UNWRITTEN);
5169#endif
5170
5171
5172
5173 } else if (inhole) {
5174
5175
5176
5177 mval->br_startoff = bno;
5178 mval->br_startblock = HOLESTARTBLOCK;
5179 mval->br_blockcount =
5180 XFS_FILBLKS_MIN(len, got.br_startoff - bno);
5181 mval->br_state = XFS_EXT_NORM;
5182 bno += mval->br_blockcount;
5183 len -= mval->br_blockcount;
5184 mval++;
5185 n++;
5186 continue;
5187 }
5188
5189
5190
5191 ASSERT(ep != NULL);
5192 if (!(flags & XFS_BMAPI_ENTIRE) &&
5193 (got.br_startoff + got.br_blockcount > obno)) {
5194 if (obno > bno)
5195 bno = obno;
5196 ASSERT((bno >= obno) || (n == 0));
5197 ASSERT(bno < end);
5198 mval->br_startoff = bno;
5199 if (isnullstartblock(got.br_startblock)) {
5200 ASSERT(!wr || (flags & XFS_BMAPI_DELAY));
5201 mval->br_startblock = DELAYSTARTBLOCK;
5202 } else
5203 mval->br_startblock =
5204 got.br_startblock +
5205 (bno - got.br_startoff);
5206
5207
5208
5209
5210
5211
5212
5213
5214 mval->br_blockcount =
5215 XFS_FILBLKS_MIN(end - bno, got.br_blockcount -
5216 (bno - got.br_startoff));
5217 mval->br_state = got.br_state;
5218 ASSERT(mval->br_blockcount <= len);
5219 } else {
5220 *mval = got;
5221 if (isnullstartblock(mval->br_startblock)) {
5222 ASSERT(!wr || (flags & XFS_BMAPI_DELAY));
5223 mval->br_startblock = DELAYSTARTBLOCK;
5224 }
5225 }
5226
5227
5228
5229
5230
5231 if (wr && mval->br_state == XFS_EXT_UNWRITTEN &&
5232 ((flags & (XFS_BMAPI_PREALLOC|XFS_BMAPI_DELAY)) == 0)) {
5233
5234
5235
5236 ASSERT(mval->br_blockcount <= len);
5237 if ((ifp->if_flags & XFS_IFBROOT) && !cur) {
5238 cur = xfs_bmbt_init_cursor(mp,
5239 tp, ip, whichfork);
5240 cur->bc_private.b.firstblock =
5241 *firstblock;
5242 cur->bc_private.b.flist = flist;
5243 }
5244 mval->br_state = XFS_EXT_NORM;
5245 error = xfs_bmap_add_extent(ip, lastx, &cur, mval,
5246 firstblock, flist, &tmp_logflags, delta,
5247 whichfork, (flags & XFS_BMAPI_RSVBLOCKS));
5248 logflags |= tmp_logflags;
5249 if (error)
5250 goto error0;
5251 lastx = ifp->if_lastex;
5252 ep = xfs_iext_get_ext(ifp, lastx);
5253 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
5254 xfs_bmbt_get_all(ep, &got);
5255
5256
5257
5258
5259
5260 if (mval->br_blockcount < len)
5261 continue;
5262 }
5263
5264 ASSERT((flags & XFS_BMAPI_ENTIRE) ||
5265 ((mval->br_startoff + mval->br_blockcount) <= end));
5266 ASSERT((flags & XFS_BMAPI_ENTIRE) ||
5267 (mval->br_blockcount <= len) ||
5268 (mval->br_startoff < obno));
5269 bno = mval->br_startoff + mval->br_blockcount;
5270 len = end - bno;
5271 if (n > 0 && mval->br_startoff == mval[-1].br_startoff) {
5272 ASSERT(mval->br_startblock == mval[-1].br_startblock);
5273 ASSERT(mval->br_blockcount > mval[-1].br_blockcount);
5274 ASSERT(mval->br_state == mval[-1].br_state);
5275 mval[-1].br_blockcount = mval->br_blockcount;
5276 mval[-1].br_state = mval->br_state;
5277 } else if (n > 0 && mval->br_startblock != DELAYSTARTBLOCK &&
5278 mval[-1].br_startblock != DELAYSTARTBLOCK &&
5279 mval[-1].br_startblock != HOLESTARTBLOCK &&
5280 mval->br_startblock ==
5281 mval[-1].br_startblock + mval[-1].br_blockcount &&
5282 ((flags & XFS_BMAPI_IGSTATE) ||
5283 mval[-1].br_state == mval->br_state)) {
5284 ASSERT(mval->br_startoff ==
5285 mval[-1].br_startoff + mval[-1].br_blockcount);
5286 mval[-1].br_blockcount += mval->br_blockcount;
5287 } else if (n > 0 &&
5288 mval->br_startblock == DELAYSTARTBLOCK &&
5289 mval[-1].br_startblock == DELAYSTARTBLOCK &&
5290 mval->br_startoff ==
5291 mval[-1].br_startoff + mval[-1].br_blockcount) {
5292 mval[-1].br_blockcount += mval->br_blockcount;
5293 mval[-1].br_state = mval->br_state;
5294 } else if (!((n == 0) &&
5295 ((mval->br_startoff + mval->br_blockcount) <=
5296 obno))) {
5297 mval++;
5298 n++;
5299 }
5300
5301
5302
5303
5304
5305 if (bno >= end || n >= *nmap || nallocs >= *nmap)
5306 break;
5307
5308
5309
5310 ep = xfs_iext_get_ext(ifp, ++lastx);
5311 prev = got;
5312 if (lastx >= nextents)
5313 eof = 1;
5314 else
5315 xfs_bmbt_get_all(ep, &got);
5316 }
5317 ifp->if_lastex = lastx;
5318 *nmap = n;
5319
5320
5321
5322 if (tp && XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE &&
5323 XFS_IFORK_NEXTENTS(ip, whichfork) <= ifp->if_ext_max) {
5324 ASSERT(wr && cur);
5325 error = xfs_bmap_btree_to_extents(tp, ip, cur,
5326 &tmp_logflags, whichfork);
5327 logflags |= tmp_logflags;
5328 if (error)
5329 goto error0;
5330 }
5331 ASSERT(ifp->if_ext_max ==
5332 XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
5333 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE ||
5334 XFS_IFORK_NEXTENTS(ip, whichfork) > ifp->if_ext_max);
5335 error = 0;
5336 if (delta && delta->xed_startoff != NULLFILEOFF) {
5337
5338
5339
5340
5341 ASSERT(delta->xed_blockcount > delta->xed_startoff);
5342 delta->xed_blockcount -= delta->xed_startoff;
5343 }
5344error0:
5345
5346
5347
5348
5349 if ((logflags & xfs_ilog_fext(whichfork)) &&
5350 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS)
5351 logflags &= ~xfs_ilog_fext(whichfork);
5352 else if ((logflags & xfs_ilog_fbroot(whichfork)) &&
5353 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)
5354 logflags &= ~xfs_ilog_fbroot(whichfork);
5355
5356
5357
5358
5359
5360 if (logflags) {
5361 ASSERT(tp && wr);
5362 xfs_trans_log_inode(tp, ip, logflags);
5363 }
5364 if (cur) {
5365 if (!error) {
5366 ASSERT(*firstblock == NULLFSBLOCK ||
5367 XFS_FSB_TO_AGNO(mp, *firstblock) ==
5368 XFS_FSB_TO_AGNO(mp,
5369 cur->bc_private.b.firstblock) ||
5370 (flist->xbf_low &&
5371 XFS_FSB_TO_AGNO(mp, *firstblock) <
5372 XFS_FSB_TO_AGNO(mp,
5373 cur->bc_private.b.firstblock)));
5374 *firstblock = cur->bc_private.b.firstblock;
5375 }
5376 xfs_btree_del_cursor(cur,
5377 error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
5378 }
5379 if (!error)
5380 xfs_bmap_validate_ret(orig_bno, orig_len, orig_flags, orig_mval,
5381 orig_nmap, *nmap);
5382 return error;
5383}
5384
5385
5386
5387
5388
5389
5390
5391
5392int
5393xfs_bmapi_single(
5394 xfs_trans_t *tp,
5395 xfs_inode_t *ip,
5396 int whichfork,
5397 xfs_fsblock_t *fsb,
5398 xfs_fileoff_t bno)
5399{
5400 int eof;
5401 int error;
5402 xfs_bmbt_irec_t got;
5403 xfs_ifork_t *ifp;
5404 xfs_extnum_t lastx;
5405 xfs_bmbt_irec_t prev;
5406
5407 ifp = XFS_IFORK_PTR(ip, whichfork);
5408 if (unlikely(
5409 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE &&
5410 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS)) {
5411 XFS_ERROR_REPORT("xfs_bmapi_single", XFS_ERRLEVEL_LOW,
5412 ip->i_mount);
5413 return XFS_ERROR(EFSCORRUPTED);
5414 }
5415 if (XFS_FORCED_SHUTDOWN(ip->i_mount))
5416 return XFS_ERROR(EIO);
5417 XFS_STATS_INC(xs_blk_mapr);
5418 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
5419 (error = xfs_iread_extents(tp, ip, whichfork)))
5420 return error;
5421 (void)xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,
5422 &prev);
5423
5424
5425
5426
5427 if (eof || got.br_startoff > bno) {
5428 *fsb = NULLFSBLOCK;
5429 return 0;
5430 }
5431 ASSERT(!isnullstartblock(got.br_startblock));
5432 ASSERT(bno < got.br_startoff + got.br_blockcount);
5433 *fsb = got.br_startblock + (bno - got.br_startoff);
5434 ifp->if_lastex = lastx;
5435 return 0;
5436}
5437
5438
5439
5440
5441
5442
5443
5444int
5445xfs_bunmapi(
5446 xfs_trans_t *tp,
5447 struct xfs_inode *ip,
5448 xfs_fileoff_t bno,
5449 xfs_filblks_t len,
5450 int flags,
5451 xfs_extnum_t nexts,
5452 xfs_fsblock_t *firstblock,
5453
5454 xfs_bmap_free_t *flist,
5455 xfs_extdelta_t *delta,
5456
5457 int *done)
5458{
5459 xfs_btree_cur_t *cur;
5460 xfs_bmbt_irec_t del;
5461 int eof;
5462 xfs_bmbt_rec_host_t *ep;
5463 int error;
5464 xfs_extnum_t extno;
5465 xfs_bmbt_irec_t got;
5466 xfs_ifork_t *ifp;
5467 int isrt;
5468 xfs_extnum_t lastx;
5469 int logflags;
5470 xfs_extlen_t mod;
5471 xfs_mount_t *mp;
5472 xfs_extnum_t nextents;
5473 xfs_bmbt_irec_t prev;
5474 xfs_fileoff_t start;
5475 int tmp_logflags;
5476 int wasdel;
5477 int whichfork;
5478 int rsvd;
5479 xfs_fsblock_t sum;
5480
5481 xfs_bunmap_trace(ip, bno, len, flags, (inst_t *)__return_address);
5482 whichfork = (flags & XFS_BMAPI_ATTRFORK) ?
5483 XFS_ATTR_FORK : XFS_DATA_FORK;
5484 ifp = XFS_IFORK_PTR(ip, whichfork);
5485 if (unlikely(
5486 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
5487 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) {
5488 XFS_ERROR_REPORT("xfs_bunmapi", XFS_ERRLEVEL_LOW,
5489 ip->i_mount);
5490 return XFS_ERROR(EFSCORRUPTED);
5491 }
5492 mp = ip->i_mount;
5493 if (XFS_FORCED_SHUTDOWN(mp))
5494 return XFS_ERROR(EIO);
5495 rsvd = (flags & XFS_BMAPI_RSVBLOCKS) != 0;
5496 ASSERT(len > 0);
5497 ASSERT(nexts >= 0);
5498 ASSERT(ifp->if_ext_max ==
5499 XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
5500 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
5501 (error = xfs_iread_extents(tp, ip, whichfork)))
5502 return error;
5503 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
5504 if (nextents == 0) {
5505 *done = 1;
5506 return 0;
5507 }
5508 XFS_STATS_INC(xs_blk_unmap);
5509 isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip);
5510 start = bno;
5511 bno = start + len - 1;
5512 ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,
5513 &prev);
5514 if (delta) {
5515 delta->xed_startoff = NULLFILEOFF;
5516 delta->xed_blockcount = 0;
5517 }
5518
5519
5520
5521
5522 if (eof) {
5523 ep = xfs_iext_get_ext(ifp, --lastx);
5524 xfs_bmbt_get_all(ep, &got);
5525 bno = got.br_startoff + got.br_blockcount - 1;
5526 }
5527 logflags = 0;
5528 if (ifp->if_flags & XFS_IFBROOT) {
5529 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE);
5530 cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
5531 cur->bc_private.b.firstblock = *firstblock;
5532 cur->bc_private.b.flist = flist;
5533 cur->bc_private.b.flags = 0;
5534 } else
5535 cur = NULL;
5536 extno = 0;
5537 while (bno != (xfs_fileoff_t)-1 && bno >= start && lastx >= 0 &&
5538 (nexts == 0 || extno < nexts)) {
5539
5540
5541
5542
5543 if (got.br_startoff > bno) {
5544 if (--lastx < 0)
5545 break;
5546 ep = xfs_iext_get_ext(ifp, lastx);
5547 xfs_bmbt_get_all(ep, &got);
5548 }
5549
5550
5551
5552
5553 bno = XFS_FILEOFF_MIN(bno,
5554 got.br_startoff + got.br_blockcount - 1);
5555 if (bno < start)
5556 break;
5557
5558
5559
5560
5561 ASSERT(ep != NULL);
5562 del = got;
5563 wasdel = isnullstartblock(del.br_startblock);
5564 if (got.br_startoff < start) {
5565 del.br_startoff = start;
5566 del.br_blockcount -= start - got.br_startoff;
5567 if (!wasdel)
5568 del.br_startblock += start - got.br_startoff;
5569 }
5570 if (del.br_startoff + del.br_blockcount > bno + 1)
5571 del.br_blockcount = bno + 1 - del.br_startoff;
5572 sum = del.br_startblock + del.br_blockcount;
5573 if (isrt &&
5574 (mod = do_mod(sum, mp->m_sb.sb_rextsize))) {
5575
5576
5577
5578
5579
5580
5581
5582 if (del.br_state == XFS_EXT_UNWRITTEN ||
5583 !xfs_sb_version_hasextflgbit(&mp->m_sb)) {
5584
5585
5586
5587
5588 ASSERT(bno >= mod);
5589 bno -= mod > del.br_blockcount ?
5590 del.br_blockcount : mod;
5591 if (bno < got.br_startoff) {
5592 if (--lastx >= 0)
5593 xfs_bmbt_get_all(xfs_iext_get_ext(
5594 ifp, lastx), &got);
5595 }
5596 continue;
5597 }
5598
5599
5600
5601
5602 ASSERT(del.br_state == XFS_EXT_NORM);
5603 ASSERT(xfs_trans_get_block_res(tp) > 0);
5604
5605
5606
5607
5608 if (del.br_blockcount > mod) {
5609 del.br_startoff += del.br_blockcount - mod;
5610 del.br_startblock += del.br_blockcount - mod;
5611 del.br_blockcount = mod;
5612 }
5613 del.br_state = XFS_EXT_UNWRITTEN;
5614 error = xfs_bmap_add_extent(ip, lastx, &cur, &del,
5615 firstblock, flist, &logflags, delta,
5616 XFS_DATA_FORK, 0);
5617 if (error)
5618 goto error0;
5619 goto nodelete;
5620 }
5621 if (isrt && (mod = do_mod(del.br_startblock, mp->m_sb.sb_rextsize))) {
5622
5623
5624
5625
5626
5627 mod = mp->m_sb.sb_rextsize - mod;
5628 if (del.br_blockcount > mod) {
5629 del.br_blockcount -= mod;
5630 del.br_startoff += mod;
5631 del.br_startblock += mod;
5632 } else if ((del.br_startoff == start &&
5633 (del.br_state == XFS_EXT_UNWRITTEN ||
5634 xfs_trans_get_block_res(tp) == 0)) ||
5635 !xfs_sb_version_hasextflgbit(&mp->m_sb)) {
5636
5637
5638
5639
5640 ASSERT(bno >= del.br_blockcount);
5641 bno -= del.br_blockcount;
5642 if (bno < got.br_startoff) {
5643 if (--lastx >= 0)
5644 xfs_bmbt_get_all(--ep, &got);
5645 }
5646 continue;
5647 } else if (del.br_state == XFS_EXT_UNWRITTEN) {
5648
5649
5650
5651
5652
5653
5654 ASSERT(lastx > 0);
5655 xfs_bmbt_get_all(xfs_iext_get_ext(ifp,
5656 lastx - 1), &prev);
5657 ASSERT(prev.br_state == XFS_EXT_NORM);
5658 ASSERT(!isnullstartblock(prev.br_startblock));
5659 ASSERT(del.br_startblock ==
5660 prev.br_startblock + prev.br_blockcount);
5661 if (prev.br_startoff < start) {
5662 mod = start - prev.br_startoff;
5663 prev.br_blockcount -= mod;
5664 prev.br_startblock += mod;
5665 prev.br_startoff = start;
5666 }
5667 prev.br_state = XFS_EXT_UNWRITTEN;
5668 error = xfs_bmap_add_extent(ip, lastx - 1, &cur,
5669 &prev, firstblock, flist, &logflags,
5670 delta, XFS_DATA_FORK, 0);
5671 if (error)
5672 goto error0;
5673 goto nodelete;
5674 } else {
5675 ASSERT(del.br_state == XFS_EXT_NORM);
5676 del.br_state = XFS_EXT_UNWRITTEN;
5677 error = xfs_bmap_add_extent(ip, lastx, &cur,
5678 &del, firstblock, flist, &logflags,
5679 delta, XFS_DATA_FORK, 0);
5680 if (error)
5681 goto error0;
5682 goto nodelete;
5683 }
5684 }
5685 if (wasdel) {
5686 ASSERT(startblockval(del.br_startblock) > 0);
5687
5688 if (isrt) {
5689 xfs_filblks_t rtexts;
5690
5691 rtexts = XFS_FSB_TO_B(mp, del.br_blockcount);
5692 do_div(rtexts, mp->m_sb.sb_rextsize);
5693 xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS,
5694 (int64_t)rtexts, rsvd);
5695 (void)xfs_trans_reserve_quota_nblks(NULL,
5696 ip, -((long)del.br_blockcount), 0,
5697 XFS_QMOPT_RES_RTBLKS);
5698 } else {
5699 xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS,
5700 (int64_t)del.br_blockcount, rsvd);
5701 (void)xfs_trans_reserve_quota_nblks(NULL,
5702 ip, -((long)del.br_blockcount), 0,
5703 XFS_QMOPT_RES_REGBLKS);
5704 }
5705 ip->i_delayed_blks -= del.br_blockcount;
5706 if (cur)
5707 cur->bc_private.b.flags |=
5708 XFS_BTCUR_BPRV_WASDEL;
5709 } else if (cur)
5710 cur->bc_private.b.flags &= ~XFS_BTCUR_BPRV_WASDEL;
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722 if (!wasdel && xfs_trans_get_block_res(tp) == 0 &&
5723 XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS &&
5724 XFS_IFORK_NEXTENTS(ip, whichfork) >= ifp->if_ext_max &&
5725 del.br_startoff > got.br_startoff &&
5726 del.br_startoff + del.br_blockcount <
5727 got.br_startoff + got.br_blockcount) {
5728 error = XFS_ERROR(ENOSPC);
5729 goto error0;
5730 }
5731 error = xfs_bmap_del_extent(ip, tp, lastx, flist, cur, &del,
5732 &tmp_logflags, delta, whichfork, rsvd);
5733 logflags |= tmp_logflags;
5734 if (error)
5735 goto error0;
5736 bno = del.br_startoff - 1;
5737nodelete:
5738 lastx = ifp->if_lastex;
5739
5740
5741
5742
5743 ep = xfs_iext_get_ext(ifp, lastx);
5744 if (bno != (xfs_fileoff_t)-1 && bno >= start) {
5745 if (lastx >= XFS_IFORK_NEXTENTS(ip, whichfork) ||
5746 xfs_bmbt_get_startoff(ep) > bno) {
5747 if (--lastx >= 0)
5748 ep = xfs_iext_get_ext(ifp, lastx);
5749 }
5750 if (lastx >= 0)
5751 xfs_bmbt_get_all(ep, &got);
5752 extno++;
5753 }
5754 }
5755 ifp->if_lastex = lastx;
5756 *done = bno == (xfs_fileoff_t)-1 || bno < start || lastx < 0;
5757 ASSERT(ifp->if_ext_max ==
5758 XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
5759
5760
5761
5762 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS &&
5763 XFS_IFORK_NEXTENTS(ip, whichfork) > ifp->if_ext_max) {
5764 ASSERT(cur == NULL);
5765 error = xfs_bmap_extents_to_btree(tp, ip, firstblock, flist,
5766 &cur, 0, &tmp_logflags, whichfork);
5767 logflags |= tmp_logflags;
5768 if (error)
5769 goto error0;
5770 }
5771
5772
5773
5774 else if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE &&
5775 XFS_IFORK_NEXTENTS(ip, whichfork) <= ifp->if_ext_max) {
5776 ASSERT(cur != NULL);
5777 error = xfs_bmap_btree_to_extents(tp, ip, cur, &tmp_logflags,
5778 whichfork);
5779 logflags |= tmp_logflags;
5780 if (error)
5781 goto error0;
5782 }
5783
5784
5785
5786 ASSERT(ifp->if_ext_max ==
5787 XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t));
5788 error = 0;
5789 if (delta && delta->xed_startoff != NULLFILEOFF) {
5790
5791
5792
5793
5794 ASSERT(delta->xed_blockcount > delta->xed_startoff);
5795 delta->xed_blockcount -= delta->xed_startoff;
5796 }
5797error0:
5798
5799
5800
5801
5802 if ((logflags & xfs_ilog_fext(whichfork)) &&
5803 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS)
5804 logflags &= ~xfs_ilog_fext(whichfork);
5805 else if ((logflags & xfs_ilog_fbroot(whichfork)) &&
5806 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)
5807 logflags &= ~xfs_ilog_fbroot(whichfork);
5808
5809
5810
5811
5812 if (logflags)
5813 xfs_trans_log_inode(tp, ip, logflags);
5814 if (cur) {
5815 if (!error) {
5816 *firstblock = cur->bc_private.b.firstblock;
5817 cur->bc_private.b.allocated = 0;
5818 }
5819 xfs_btree_del_cursor(cur,
5820 error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
5821 }
5822 return error;
5823}
5824
5825
5826
5827
5828STATIC int
5829xfs_getbmapx_fix_eof_hole(
5830 xfs_inode_t *ip,
5831 struct getbmapx *out,
5832 int prealloced,
5833
5834 __int64_t end,
5835 xfs_fsblock_t startblock)
5836{
5837 __int64_t fixlen;
5838 xfs_mount_t *mp;
5839 xfs_ifork_t *ifp;
5840 xfs_extnum_t lastx;
5841 xfs_fileoff_t fileblock;
5842
5843 if (startblock == HOLESTARTBLOCK) {
5844 mp = ip->i_mount;
5845 out->bmv_block = -1;
5846 fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, ip->i_size));
5847 fixlen -= out->bmv_offset;
5848 if (prealloced && out->bmv_offset + out->bmv_length == end) {
5849
5850 if (fixlen <= 0)
5851 return 0;
5852 out->bmv_length = fixlen;
5853 }
5854 } else {
5855 if (startblock == DELAYSTARTBLOCK)
5856 out->bmv_block = -2;
5857 else
5858 out->bmv_block = xfs_fsb_to_db(ip, startblock);
5859 fileblock = XFS_BB_TO_FSB(ip->i_mount, out->bmv_offset);
5860 ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
5861 if (xfs_iext_bno_to_ext(ifp, fileblock, &lastx) &&
5862 (lastx == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))-1))
5863 out->bmv_oflags |= BMV_OF_LAST;
5864 }
5865
5866 return 1;
5867}
5868
5869
5870
5871
5872
5873
5874
5875
5876int
5877xfs_getbmap(
5878 xfs_inode_t *ip,
5879 struct getbmapx *bmv,
5880 xfs_bmap_format_t formatter,
5881 void *arg)
5882{
5883 __int64_t bmvend;
5884 int error = 0;
5885 __int64_t fixlen;
5886 int i;
5887 int lock;
5888 xfs_bmbt_irec_t *map;
5889 xfs_mount_t *mp;
5890 int nex;
5891 int nexleft;
5892 int subnex;
5893 int nmap;
5894 struct getbmapx *out;
5895 int whichfork;
5896 int prealloced;
5897
5898 int iflags;
5899 int bmapi_flags;
5900 int cur_ext = 0;
5901
5902 mp = ip->i_mount;
5903 iflags = bmv->bmv_iflags;
5904 whichfork = iflags & BMV_IF_ATTRFORK ? XFS_ATTR_FORK : XFS_DATA_FORK;
5905
5906 if (whichfork == XFS_ATTR_FORK) {
5907 if (XFS_IFORK_Q(ip)) {
5908 if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS &&
5909 ip->i_d.di_aformat != XFS_DINODE_FMT_BTREE &&
5910 ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)
5911 return XFS_ERROR(EINVAL);
5912 } else if (unlikely(
5913 ip->i_d.di_aformat != 0 &&
5914 ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS)) {
5915 XFS_ERROR_REPORT("xfs_getbmap", XFS_ERRLEVEL_LOW,
5916 ip->i_mount);
5917 return XFS_ERROR(EFSCORRUPTED);
5918 }
5919
5920 prealloced = 0;
5921 fixlen = 1LL << 32;
5922 } else {
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937 if (DM_EVENT_ENABLED(ip, DM_EVENT_READ) &&
5938 !(iflags & BMV_IF_NO_DMAPI_READ)) {
5939 error = XFS_SEND_DATA(mp, DM_EVENT_READ, ip,
5940 0, 0, 0, NULL);
5941 if (error)
5942 return XFS_ERROR(error);
5943 }
5944
5945 if (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS &&
5946 ip->i_d.di_format != XFS_DINODE_FMT_BTREE &&
5947 ip->i_d.di_format != XFS_DINODE_FMT_LOCAL)
5948 return XFS_ERROR(EINVAL);
5949
5950 if (xfs_get_extsz_hint(ip) ||
5951 ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC|XFS_DIFLAG_APPEND)){
5952 prealloced = 1;
5953 fixlen = XFS_MAXIOFFSET(mp);
5954 } else {
5955 prealloced = 0;
5956 fixlen = ip->i_size;
5957 }
5958 }
5959
5960 if (bmv->bmv_length == -1) {
5961 fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, fixlen));
5962 bmv->bmv_length =
5963 max_t(__int64_t, fixlen - bmv->bmv_offset, 0);
5964 } else if (bmv->bmv_length == 0) {
5965 bmv->bmv_entries = 0;
5966 return 0;
5967 } else if (bmv->bmv_length < 0) {
5968 return XFS_ERROR(EINVAL);
5969 }
5970
5971 nex = bmv->bmv_count - 1;
5972 if (nex <= 0)
5973 return XFS_ERROR(EINVAL);
5974 bmvend = bmv->bmv_offset + bmv->bmv_length;
5975
5976
5977 if (bmv->bmv_count > ULONG_MAX / sizeof(struct getbmapx))
5978 return XFS_ERROR(ENOMEM);
5979 out = kmem_zalloc(bmv->bmv_count * sizeof(struct getbmapx), KM_MAYFAIL);
5980 if (!out)
5981 return XFS_ERROR(ENOMEM);
5982
5983 xfs_ilock(ip, XFS_IOLOCK_SHARED);
5984 if (whichfork == XFS_DATA_FORK && !(iflags & BMV_IF_DELALLOC)) {
5985 if (ip->i_delayed_blks || ip->i_size > ip->i_d.di_size) {
5986 error = xfs_flush_pages(ip, 0, -1, 0, FI_REMAPF);
5987 if (error)
5988 goto out_unlock_iolock;
5989 }
5990
5991 ASSERT(ip->i_delayed_blks == 0);
5992 }
5993
5994 lock = xfs_ilock_map_shared(ip);
5995
5996
5997
5998
5999
6000 if (nex > XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1)
6001 nex = XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1;
6002
6003 bmapi_flags = xfs_bmapi_aflag(whichfork);
6004 if (!(iflags & BMV_IF_PREALLOC))
6005 bmapi_flags |= XFS_BMAPI_IGSTATE;
6006
6007
6008
6009
6010 error = ENOMEM;
6011 subnex = 16;
6012 map = kmem_alloc(subnex * sizeof(*map), KM_MAYFAIL | KM_NOFS);
6013 if (!map)
6014 goto out_unlock_ilock;
6015
6016 bmv->bmv_entries = 0;
6017
6018 if (XFS_IFORK_NEXTENTS(ip, whichfork) == 0 &&
6019 (whichfork == XFS_ATTR_FORK || !(iflags & BMV_IF_DELALLOC))) {
6020 error = 0;
6021 goto out_free_map;
6022 }
6023
6024 nexleft = nex;
6025
6026 do {
6027 nmap = (nexleft > subnex) ? subnex : nexleft;
6028 error = xfs_bmapi(NULL, ip, XFS_BB_TO_FSBT(mp, bmv->bmv_offset),
6029 XFS_BB_TO_FSB(mp, bmv->bmv_length),
6030 bmapi_flags, NULL, 0, map, &nmap,
6031 NULL, NULL);
6032 if (error)
6033 goto out_free_map;
6034 ASSERT(nmap <= subnex);
6035
6036 for (i = 0; i < nmap && nexleft && bmv->bmv_length; i++) {
6037 out[cur_ext].bmv_oflags = 0;
6038 if (map[i].br_state == XFS_EXT_UNWRITTEN)
6039 out[cur_ext].bmv_oflags |= BMV_OF_PREALLOC;
6040 else if (map[i].br_startblock == DELAYSTARTBLOCK)
6041 out[cur_ext].bmv_oflags |= BMV_OF_DELALLOC;
6042 out[cur_ext].bmv_offset =
6043 XFS_FSB_TO_BB(mp, map[i].br_startoff);
6044 out[cur_ext].bmv_length =
6045 XFS_FSB_TO_BB(mp, map[i].br_blockcount);
6046 out[cur_ext].bmv_unused1 = 0;
6047 out[cur_ext].bmv_unused2 = 0;
6048 ASSERT(((iflags & BMV_IF_DELALLOC) != 0) ||
6049 (map[i].br_startblock != DELAYSTARTBLOCK));
6050 if (map[i].br_startblock == HOLESTARTBLOCK &&
6051 whichfork == XFS_ATTR_FORK) {
6052
6053 out[cur_ext].bmv_oflags |= BMV_OF_LAST;
6054 goto out_free_map;
6055 }
6056
6057 if (!xfs_getbmapx_fix_eof_hole(ip, &out[cur_ext],
6058 prealloced, bmvend,
6059 map[i].br_startblock))
6060 goto out_free_map;
6061
6062 nexleft--;
6063 bmv->bmv_offset =
6064 out[cur_ext].bmv_offset +
6065 out[cur_ext].bmv_length;
6066 bmv->bmv_length =
6067 max_t(__int64_t, 0, bmvend - bmv->bmv_offset);
6068 bmv->bmv_entries++;
6069 cur_ext++;
6070 }
6071 } while (nmap && nexleft && bmv->bmv_length);
6072
6073 out_free_map:
6074 kmem_free(map);
6075 out_unlock_ilock:
6076 xfs_iunlock_map_shared(ip, lock);
6077 out_unlock_iolock:
6078 xfs_iunlock(ip, XFS_IOLOCK_SHARED);
6079
6080 for (i = 0; i < cur_ext; i++) {
6081 int full = 0;
6082
6083
6084 error = formatter(&arg, &out[i], &full);
6085 if (error || full)
6086 break;
6087 }
6088
6089 kmem_free(out);
6090 return error;
6091}
6092
6093
6094
6095
6096
6097
6098
6099STATIC int
6100xfs_bmap_isaeof(
6101 xfs_inode_t *ip,
6102 xfs_fileoff_t off,
6103 int whichfork,
6104 char *aeof)
6105{
6106 int error;
6107 xfs_ifork_t *ifp;
6108 xfs_bmbt_rec_host_t *lastrec;
6109 xfs_extnum_t nextents;
6110 xfs_bmbt_irec_t s;
6111
6112 ASSERT(whichfork == XFS_DATA_FORK);
6113 ifp = XFS_IFORK_PTR(ip, whichfork);
6114 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
6115 (error = xfs_iread_extents(NULL, ip, whichfork)))
6116 return error;
6117 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
6118 if (nextents == 0) {
6119 *aeof = 1;
6120 return 0;
6121 }
6122
6123
6124
6125 lastrec = xfs_iext_get_ext(ifp, nextents - 1);
6126 xfs_bmbt_get_all(lastrec, &s);
6127
6128
6129
6130
6131 *aeof = (off >= s.br_startoff &&
6132 off < s.br_startoff + s.br_blockcount &&
6133 isnullstartblock(s.br_startblock)) ||
6134 off >= s.br_startoff + s.br_blockcount;
6135 return 0;
6136}
6137
6138
6139
6140
6141
6142int
6143xfs_bmap_eof(
6144 xfs_inode_t *ip,
6145 xfs_fileoff_t endoff,
6146 int whichfork,
6147 int *eof)
6148{
6149 xfs_fsblock_t blockcount;
6150 int error;
6151 xfs_ifork_t *ifp;
6152 xfs_bmbt_rec_host_t *lastrec;
6153 xfs_extnum_t nextents;
6154 xfs_fileoff_t startoff;
6155
6156 ASSERT(whichfork == XFS_DATA_FORK);
6157 ifp = XFS_IFORK_PTR(ip, whichfork);
6158 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
6159 (error = xfs_iread_extents(NULL, ip, whichfork)))
6160 return error;
6161 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
6162 if (nextents == 0) {
6163 *eof = 1;
6164 return 0;
6165 }
6166
6167
6168
6169 lastrec = xfs_iext_get_ext(ifp, nextents - 1);
6170 startoff = xfs_bmbt_get_startoff(lastrec);
6171 blockcount = xfs_bmbt_get_blockcount(lastrec);
6172 *eof = endoff >= startoff + blockcount;
6173 return 0;
6174}
6175
6176#ifdef DEBUG
6177STATIC
6178xfs_buf_t *
6179xfs_bmap_get_bp(
6180 xfs_btree_cur_t *cur,
6181 xfs_fsblock_t bno)
6182{
6183 int i;
6184 xfs_buf_t *bp;
6185
6186 if (!cur)
6187 return(NULL);
6188
6189 bp = NULL;
6190 for(i = 0; i < XFS_BTREE_MAXLEVELS; i++) {
6191 bp = cur->bc_bufs[i];
6192 if (!bp) break;
6193 if (XFS_BUF_ADDR(bp) == bno)
6194 break;
6195 }
6196 if (i == XFS_BTREE_MAXLEVELS)
6197 bp = NULL;
6198
6199 if (!bp) {
6200 xfs_log_item_chunk_t *licp;
6201 xfs_trans_t *tp;
6202
6203 tp = cur->bc_tp;
6204 licp = &tp->t_items;
6205 while (!bp && licp != NULL) {
6206 if (xfs_lic_are_all_free(licp)) {
6207 licp = licp->lic_next;
6208 continue;
6209 }
6210 for (i = 0; i < licp->lic_unused; i++) {
6211 xfs_log_item_desc_t *lidp;
6212 xfs_log_item_t *lip;
6213 xfs_buf_log_item_t *bip;
6214 xfs_buf_t *lbp;
6215
6216 if (xfs_lic_isfree(licp, i)) {
6217 continue;
6218 }
6219
6220 lidp = xfs_lic_slot(licp, i);
6221 lip = lidp->lid_item;
6222 if (lip->li_type != XFS_LI_BUF)
6223 continue;
6224
6225 bip = (xfs_buf_log_item_t *)lip;
6226 lbp = bip->bli_buf;
6227
6228 if (XFS_BUF_ADDR(lbp) == bno) {
6229 bp = lbp;
6230 break;
6231 }
6232 }
6233 licp = licp->lic_next;
6234 }
6235 }
6236 return(bp);
6237}
6238
6239STATIC void
6240xfs_check_block(
6241 struct xfs_btree_block *block,
6242 xfs_mount_t *mp,
6243 int root,
6244 short sz)
6245{
6246 int i, j, dmxr;
6247 __be64 *pp, *thispa;
6248 xfs_bmbt_key_t *prevp, *keyp;
6249
6250 ASSERT(be16_to_cpu(block->bb_level) > 0);
6251
6252 prevp = NULL;
6253 for( i = 1; i <= xfs_btree_get_numrecs(block); i++) {
6254 dmxr = mp->m_bmap_dmxr[0];
6255 keyp = XFS_BMBT_KEY_ADDR(mp, block, i);
6256
6257 if (prevp) {
6258 ASSERT(be64_to_cpu(prevp->br_startoff) <
6259 be64_to_cpu(keyp->br_startoff));
6260 }
6261 prevp = keyp;
6262
6263
6264
6265
6266 if (root)
6267 pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, i, sz);
6268 else
6269 pp = XFS_BMBT_PTR_ADDR(mp, block, i, dmxr);
6270
6271 for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) {
6272 if (root)
6273 thispa = XFS_BMAP_BROOT_PTR_ADDR(mp, block, j, sz);
6274 else
6275 thispa = XFS_BMBT_PTR_ADDR(mp, block, j, dmxr);
6276 if (*thispa == *pp) {
6277 cmn_err(CE_WARN, "%s: thispa(%d) == pp(%d) %Ld",
6278 __func__, j, i,
6279 (unsigned long long)be64_to_cpu(*thispa));
6280 panic("%s: ptrs are equal in node\n",
6281 __func__);
6282 }
6283 }
6284 }
6285}
6286
6287
6288
6289
6290
6291
6292STATIC void
6293xfs_bmap_check_leaf_extents(
6294 xfs_btree_cur_t *cur,
6295 xfs_inode_t *ip,
6296 int whichfork)
6297{
6298 struct xfs_btree_block *block;
6299 xfs_fsblock_t bno;
6300 xfs_buf_t *bp;
6301 int error;
6302 xfs_extnum_t i=0, j;
6303 xfs_ifork_t *ifp;
6304 int level;
6305 xfs_mount_t *mp;
6306 __be64 *pp;
6307 xfs_bmbt_rec_t *ep;
6308 xfs_bmbt_rec_t last = {0, 0};
6309 xfs_bmbt_rec_t *nextp;
6310 int bp_release = 0;
6311
6312 if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) {
6313 return;
6314 }
6315
6316 bno = NULLFSBLOCK;
6317 mp = ip->i_mount;
6318 ifp = XFS_IFORK_PTR(ip, whichfork);
6319 block = ifp->if_broot;
6320
6321
6322
6323 level = be16_to_cpu(block->bb_level);
6324 ASSERT(level > 0);
6325 xfs_check_block(block, mp, 1, ifp->if_broot_bytes);
6326 pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
6327 bno = be64_to_cpu(*pp);
6328
6329 ASSERT(bno != NULLDFSBNO);
6330 ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
6331 ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks);
6332
6333
6334
6335
6336
6337 while (level-- > 0) {
6338
6339 bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno));
6340 if (bp) {
6341 bp_release = 0;
6342 } else {
6343 bp_release = 1;
6344 }
6345 if (!bp && (error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp,
6346 XFS_BMAP_BTREE_REF)))
6347 goto error_norelse;
6348 block = XFS_BUF_TO_BLOCK(bp);
6349 XFS_WANT_CORRUPTED_GOTO(
6350 xfs_bmap_sanity_check(mp, bp, level),
6351 error0);
6352 if (level == 0)
6353 break;
6354
6355
6356
6357
6358
6359
6360 xfs_check_block(block, mp, 0, 0);
6361 pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]);
6362 bno = be64_to_cpu(*pp);
6363 XFS_WANT_CORRUPTED_GOTO(XFS_FSB_SANITY_CHECK(mp, bno), error0);
6364 if (bp_release) {
6365 bp_release = 0;
6366 xfs_trans_brelse(NULL, bp);
6367 }
6368 }
6369
6370
6371
6372
6373 i = 0;
6374
6375
6376
6377
6378 for (;;) {
6379 xfs_fsblock_t nextbno;
6380 xfs_extnum_t num_recs;
6381
6382
6383 num_recs = xfs_btree_get_numrecs(block);
6384
6385
6386
6387
6388
6389 nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
6390
6391
6392
6393
6394
6395
6396
6397 ep = XFS_BMBT_REC_ADDR(mp, block, 1);
6398 if (i) {
6399 ASSERT(xfs_bmbt_disk_get_startoff(&last) +
6400 xfs_bmbt_disk_get_blockcount(&last) <=
6401 xfs_bmbt_disk_get_startoff(ep));
6402 }
6403 for (j = 1; j < num_recs; j++) {
6404 nextp = XFS_BMBT_REC_ADDR(mp, block, j + 1);
6405 ASSERT(xfs_bmbt_disk_get_startoff(ep) +
6406 xfs_bmbt_disk_get_blockcount(ep) <=
6407 xfs_bmbt_disk_get_startoff(nextp));
6408 ep = nextp;
6409 }
6410
6411 last = *ep;
6412 i += num_recs;
6413 if (bp_release) {
6414 bp_release = 0;
6415 xfs_trans_brelse(NULL, bp);
6416 }
6417 bno = nextbno;
6418
6419
6420
6421 if (bno == NULLFSBLOCK)
6422 break;
6423
6424 bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno));
6425 if (bp) {
6426 bp_release = 0;
6427 } else {
6428 bp_release = 1;
6429 }
6430 if (!bp && (error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp,
6431 XFS_BMAP_BTREE_REF)))
6432 goto error_norelse;
6433 block = XFS_BUF_TO_BLOCK(bp);
6434 }
6435 if (bp_release) {
6436 bp_release = 0;
6437 xfs_trans_brelse(NULL, bp);
6438 }
6439 return;
6440
6441error0:
6442 cmn_err(CE_WARN, "%s: at error0", __func__);
6443 if (bp_release)
6444 xfs_trans_brelse(NULL, bp);
6445error_norelse:
6446 cmn_err(CE_WARN, "%s: BAD after btree leaves for %d extents",
6447 __func__, i);
6448 panic("%s: CORRUPTED BTREE OR SOMETHING", __func__);
6449 return;
6450}
6451#endif
6452
6453
6454
6455
6456int
6457xfs_bmap_count_blocks(
6458 xfs_trans_t *tp,
6459 xfs_inode_t *ip,
6460 int whichfork,
6461 int *count)
6462{
6463 struct xfs_btree_block *block;
6464 xfs_fsblock_t bno;
6465 xfs_ifork_t *ifp;
6466 int level;
6467 xfs_mount_t *mp;
6468 __be64 *pp;
6469
6470 bno = NULLFSBLOCK;
6471 mp = ip->i_mount;
6472 ifp = XFS_IFORK_PTR(ip, whichfork);
6473 if ( XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS ) {
6474 xfs_bmap_count_leaves(ifp, 0,
6475 ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t),
6476 count);
6477 return 0;
6478 }
6479
6480
6481
6482
6483 block = ifp->if_broot;
6484 level = be16_to_cpu(block->bb_level);
6485 ASSERT(level > 0);
6486 pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
6487 bno = be64_to_cpu(*pp);
6488 ASSERT(bno != NULLDFSBNO);
6489 ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
6490 ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks);
6491
6492 if (unlikely(xfs_bmap_count_tree(mp, tp, ifp, bno, level, count) < 0)) {
6493 XFS_ERROR_REPORT("xfs_bmap_count_blocks(2)", XFS_ERRLEVEL_LOW,
6494 mp);
6495 return XFS_ERROR(EFSCORRUPTED);
6496 }
6497
6498 return 0;
6499}
6500
6501
6502
6503
6504
6505STATIC int
6506xfs_bmap_count_tree(
6507 xfs_mount_t *mp,
6508 xfs_trans_t *tp,
6509 xfs_ifork_t *ifp,
6510 xfs_fsblock_t blockno,
6511 int levelin,
6512 int *count)
6513{
6514 int error;
6515 xfs_buf_t *bp, *nbp;
6516 int level = levelin;
6517 __be64 *pp;
6518 xfs_fsblock_t bno = blockno;
6519 xfs_fsblock_t nextbno;
6520 struct xfs_btree_block *block, *nextblock;
6521 int numrecs;
6522
6523 if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF)))
6524 return error;
6525 *count += 1;
6526 block = XFS_BUF_TO_BLOCK(bp);
6527
6528 if (--level) {
6529
6530 nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
6531 while (nextbno != NULLFSBLOCK) {
6532 if ((error = xfs_btree_read_bufl(mp, tp, nextbno,
6533 0, &nbp, XFS_BMAP_BTREE_REF)))
6534 return error;
6535 *count += 1;
6536 nextblock = XFS_BUF_TO_BLOCK(nbp);
6537 nextbno = be64_to_cpu(nextblock->bb_u.l.bb_rightsib);
6538 xfs_trans_brelse(tp, nbp);
6539 }
6540
6541
6542 pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]);
6543 bno = be64_to_cpu(*pp);
6544 if (unlikely((error =
6545 xfs_bmap_count_tree(mp, tp, ifp, bno, level, count)) < 0)) {
6546 xfs_trans_brelse(tp, bp);
6547 XFS_ERROR_REPORT("xfs_bmap_count_tree(1)",
6548 XFS_ERRLEVEL_LOW, mp);
6549 return XFS_ERROR(EFSCORRUPTED);
6550 }
6551 xfs_trans_brelse(tp, bp);
6552 } else {
6553
6554 for (;;) {
6555 nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
6556 numrecs = be16_to_cpu(block->bb_numrecs);
6557 xfs_bmap_disk_count_leaves(mp, block, numrecs, count);
6558 xfs_trans_brelse(tp, bp);
6559 if (nextbno == NULLFSBLOCK)
6560 break;
6561 bno = nextbno;
6562 if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
6563 XFS_BMAP_BTREE_REF)))
6564 return error;
6565 *count += 1;
6566 block = XFS_BUF_TO_BLOCK(bp);
6567 }
6568 }
6569 return 0;
6570}
6571
6572
6573
6574
6575STATIC void
6576xfs_bmap_count_leaves(
6577 xfs_ifork_t *ifp,
6578 xfs_extnum_t idx,
6579 int numrecs,
6580 int *count)
6581{
6582 int b;
6583
6584 for (b = 0; b < numrecs; b++) {
6585 xfs_bmbt_rec_host_t *frp = xfs_iext_get_ext(ifp, idx + b);
6586 *count += xfs_bmbt_get_blockcount(frp);
6587 }
6588}
6589
6590
6591
6592
6593
6594STATIC void
6595xfs_bmap_disk_count_leaves(
6596 struct xfs_mount *mp,
6597 struct xfs_btree_block *block,
6598 int numrecs,
6599 int *count)
6600{
6601 int b;
6602 xfs_bmbt_rec_t *frp;
6603
6604 for (b = 1; b <= numrecs; b++) {
6605 frp = XFS_BMBT_REC_ADDR(mp, block, b);
6606 *count += xfs_bmbt_disk_get_blockcount(frp);
6607 }
6608}
6609
