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19#include "xfs.h"
20#include "xfs_fs.h"
21#include "xfs_format.h"
22#include "xfs_log_format.h"
23#include "xfs_trans_resv.h"
24#include "xfs_mount.h"
25#include "xfs_da_format.h"
26#include "xfs_da_btree.h"
27#include "xfs_inode.h"
28#include "xfs_bmap.h"
29#include "xfs_dir2.h"
30#include "xfs_dir2_priv.h"
31#include "xfs_error.h"
32#include "xfs_trace.h"
33#include "xfs_trans.h"
34#include "xfs_buf_item.h"
35#include "xfs_cksum.h"
36#include "xfs_log.h"
37
38
39
40
41static int xfs_dir2_leaf_lookup_int(xfs_da_args_t *args, struct xfs_buf **lbpp,
42 int *indexp, struct xfs_buf **dbpp);
43static void xfs_dir3_leaf_log_bests(struct xfs_da_args *args,
44 struct xfs_buf *bp, int first, int last);
45static void xfs_dir3_leaf_log_tail(struct xfs_da_args *args,
46 struct xfs_buf *bp);
47
48
49
50
51
52#ifdef DEBUG
53static xfs_failaddr_t
54xfs_dir3_leaf1_check(
55 struct xfs_inode *dp,
56 struct xfs_buf *bp)
57{
58 struct xfs_dir2_leaf *leaf = bp->b_addr;
59 struct xfs_dir3_icleaf_hdr leafhdr;
60
61 dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
62
63 if (leafhdr.magic == XFS_DIR3_LEAF1_MAGIC) {
64 struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr;
65 if (be64_to_cpu(leaf3->info.blkno) != bp->b_bn)
66 return __this_address;
67 } else if (leafhdr.magic != XFS_DIR2_LEAF1_MAGIC)
68 return __this_address;
69
70 return xfs_dir3_leaf_check_int(dp->i_mount, dp, &leafhdr, leaf);
71}
72
73static inline void
74xfs_dir3_leaf_check(
75 struct xfs_inode *dp,
76 struct xfs_buf *bp)
77{
78 xfs_failaddr_t fa;
79
80 fa = xfs_dir3_leaf1_check(dp, bp);
81 if (!fa)
82 return;
83 xfs_corruption_error(__func__, XFS_ERRLEVEL_LOW, dp->i_mount,
84 bp->b_addr, __FILE__, __LINE__, fa);
85 ASSERT(0);
86}
87#else
88#define xfs_dir3_leaf_check(dp, bp)
89#endif
90
91xfs_failaddr_t
92xfs_dir3_leaf_check_int(
93 struct xfs_mount *mp,
94 struct xfs_inode *dp,
95 struct xfs_dir3_icleaf_hdr *hdr,
96 struct xfs_dir2_leaf *leaf)
97{
98 struct xfs_dir2_leaf_entry *ents;
99 xfs_dir2_leaf_tail_t *ltp;
100 int stale;
101 int i;
102 const struct xfs_dir_ops *ops;
103 struct xfs_dir3_icleaf_hdr leafhdr;
104 struct xfs_da_geometry *geo = mp->m_dir_geo;
105
106
107
108
109
110 ops = xfs_dir_get_ops(mp, dp);
111
112 if (!hdr) {
113 ops->leaf_hdr_from_disk(&leafhdr, leaf);
114 hdr = &leafhdr;
115 }
116
117 ents = ops->leaf_ents_p(leaf);
118 ltp = xfs_dir2_leaf_tail_p(geo, leaf);
119
120
121
122
123
124
125 if (hdr->count > ops->leaf_max_ents(geo))
126 return __this_address;
127
128
129 if ((hdr->magic == XFS_DIR2_LEAF1_MAGIC ||
130 hdr->magic == XFS_DIR3_LEAF1_MAGIC) &&
131 (char *)&ents[hdr->count] > (char *)xfs_dir2_leaf_bests_p(ltp))
132 return __this_address;
133
134
135 for (i = stale = 0; i < hdr->count; i++) {
136 if (i + 1 < hdr->count) {
137 if (be32_to_cpu(ents[i].hashval) >
138 be32_to_cpu(ents[i + 1].hashval))
139 return __this_address;
140 }
141 if (ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
142 stale++;
143 }
144 if (hdr->stale != stale)
145 return __this_address;
146 return NULL;
147}
148
149
150
151
152
153
154static xfs_failaddr_t
155xfs_dir3_leaf_verify(
156 struct xfs_buf *bp,
157 uint16_t magic)
158{
159 struct xfs_mount *mp = bp->b_target->bt_mount;
160 struct xfs_dir2_leaf *leaf = bp->b_addr;
161
162 ASSERT(magic == XFS_DIR2_LEAF1_MAGIC || magic == XFS_DIR2_LEAFN_MAGIC);
163
164 if (xfs_sb_version_hascrc(&mp->m_sb)) {
165 struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr;
166 uint16_t magic3;
167
168 magic3 = (magic == XFS_DIR2_LEAF1_MAGIC) ? XFS_DIR3_LEAF1_MAGIC
169 : XFS_DIR3_LEAFN_MAGIC;
170
171 if (leaf3->info.hdr.magic != cpu_to_be16(magic3))
172 return __this_address;
173 if (!uuid_equal(&leaf3->info.uuid, &mp->m_sb.sb_meta_uuid))
174 return __this_address;
175 if (be64_to_cpu(leaf3->info.blkno) != bp->b_bn)
176 return __this_address;
177 if (!xfs_log_check_lsn(mp, be64_to_cpu(leaf3->info.lsn)))
178 return __this_address;
179 } else {
180 if (leaf->hdr.info.magic != cpu_to_be16(magic))
181 return __this_address;
182 }
183
184 return xfs_dir3_leaf_check_int(mp, NULL, NULL, leaf);
185}
186
187static void
188__read_verify(
189 struct xfs_buf *bp,
190 uint16_t magic)
191{
192 struct xfs_mount *mp = bp->b_target->bt_mount;
193 xfs_failaddr_t fa;
194
195 if (xfs_sb_version_hascrc(&mp->m_sb) &&
196 !xfs_buf_verify_cksum(bp, XFS_DIR3_LEAF_CRC_OFF))
197 xfs_verifier_error(bp, -EFSBADCRC, __this_address);
198 else {
199 fa = xfs_dir3_leaf_verify(bp, magic);
200 if (fa)
201 xfs_verifier_error(bp, -EFSCORRUPTED, fa);
202 }
203}
204
205static void
206__write_verify(
207 struct xfs_buf *bp,
208 uint16_t magic)
209{
210 struct xfs_mount *mp = bp->b_target->bt_mount;
211 struct xfs_buf_log_item *bip = bp->b_log_item;
212 struct xfs_dir3_leaf_hdr *hdr3 = bp->b_addr;
213 xfs_failaddr_t fa;
214
215 fa = xfs_dir3_leaf_verify(bp, magic);
216 if (fa) {
217 xfs_verifier_error(bp, -EFSCORRUPTED, fa);
218 return;
219 }
220
221 if (!xfs_sb_version_hascrc(&mp->m_sb))
222 return;
223
224 if (bip)
225 hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn);
226
227 xfs_buf_update_cksum(bp, XFS_DIR3_LEAF_CRC_OFF);
228}
229
230static xfs_failaddr_t
231xfs_dir3_leaf1_verify(
232 struct xfs_buf *bp)
233{
234 return xfs_dir3_leaf_verify(bp, XFS_DIR2_LEAF1_MAGIC);
235}
236
237static void
238xfs_dir3_leaf1_read_verify(
239 struct xfs_buf *bp)
240{
241 __read_verify(bp, XFS_DIR2_LEAF1_MAGIC);
242}
243
244static void
245xfs_dir3_leaf1_write_verify(
246 struct xfs_buf *bp)
247{
248 __write_verify(bp, XFS_DIR2_LEAF1_MAGIC);
249}
250
251static xfs_failaddr_t
252xfs_dir3_leafn_verify(
253 struct xfs_buf *bp)
254{
255 return xfs_dir3_leaf_verify(bp, XFS_DIR2_LEAFN_MAGIC);
256}
257
258static void
259xfs_dir3_leafn_read_verify(
260 struct xfs_buf *bp)
261{
262 __read_verify(bp, XFS_DIR2_LEAFN_MAGIC);
263}
264
265static void
266xfs_dir3_leafn_write_verify(
267 struct xfs_buf *bp)
268{
269 __write_verify(bp, XFS_DIR2_LEAFN_MAGIC);
270}
271
272const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops = {
273 .name = "xfs_dir3_leaf1",
274 .verify_read = xfs_dir3_leaf1_read_verify,
275 .verify_write = xfs_dir3_leaf1_write_verify,
276 .verify_struct = xfs_dir3_leaf1_verify,
277};
278
279const struct xfs_buf_ops xfs_dir3_leafn_buf_ops = {
280 .name = "xfs_dir3_leafn",
281 .verify_read = xfs_dir3_leafn_read_verify,
282 .verify_write = xfs_dir3_leafn_write_verify,
283 .verify_struct = xfs_dir3_leafn_verify,
284};
285
286int
287xfs_dir3_leaf_read(
288 struct xfs_trans *tp,
289 struct xfs_inode *dp,
290 xfs_dablk_t fbno,
291 xfs_daddr_t mappedbno,
292 struct xfs_buf **bpp)
293{
294 int err;
295
296 err = xfs_da_read_buf(tp, dp, fbno, mappedbno, bpp,
297 XFS_DATA_FORK, &xfs_dir3_leaf1_buf_ops);
298 if (!err && tp && *bpp)
299 xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAF1_BUF);
300 return err;
301}
302
303int
304xfs_dir3_leafn_read(
305 struct xfs_trans *tp,
306 struct xfs_inode *dp,
307 xfs_dablk_t fbno,
308 xfs_daddr_t mappedbno,
309 struct xfs_buf **bpp)
310{
311 int err;
312
313 err = xfs_da_read_buf(tp, dp, fbno, mappedbno, bpp,
314 XFS_DATA_FORK, &xfs_dir3_leafn_buf_ops);
315 if (!err && tp && *bpp)
316 xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAFN_BUF);
317 return err;
318}
319
320
321
322
323static void
324xfs_dir3_leaf_init(
325 struct xfs_mount *mp,
326 struct xfs_trans *tp,
327 struct xfs_buf *bp,
328 xfs_ino_t owner,
329 uint16_t type)
330{
331 struct xfs_dir2_leaf *leaf = bp->b_addr;
332
333 ASSERT(type == XFS_DIR2_LEAF1_MAGIC || type == XFS_DIR2_LEAFN_MAGIC);
334
335 if (xfs_sb_version_hascrc(&mp->m_sb)) {
336 struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr;
337
338 memset(leaf3, 0, sizeof(*leaf3));
339
340 leaf3->info.hdr.magic = (type == XFS_DIR2_LEAF1_MAGIC)
341 ? cpu_to_be16(XFS_DIR3_LEAF1_MAGIC)
342 : cpu_to_be16(XFS_DIR3_LEAFN_MAGIC);
343 leaf3->info.blkno = cpu_to_be64(bp->b_bn);
344 leaf3->info.owner = cpu_to_be64(owner);
345 uuid_copy(&leaf3->info.uuid, &mp->m_sb.sb_meta_uuid);
346 } else {
347 memset(leaf, 0, sizeof(*leaf));
348 leaf->hdr.info.magic = cpu_to_be16(type);
349 }
350
351
352
353
354
355 if (type == XFS_DIR2_LEAF1_MAGIC) {
356 struct xfs_dir2_leaf_tail *ltp;
357
358 ltp = xfs_dir2_leaf_tail_p(mp->m_dir_geo, leaf);
359 ltp->bestcount = 0;
360 bp->b_ops = &xfs_dir3_leaf1_buf_ops;
361 xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DIR_LEAF1_BUF);
362 } else {
363 bp->b_ops = &xfs_dir3_leafn_buf_ops;
364 xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DIR_LEAFN_BUF);
365 }
366}
367
368int
369xfs_dir3_leaf_get_buf(
370 xfs_da_args_t *args,
371 xfs_dir2_db_t bno,
372 struct xfs_buf **bpp,
373 uint16_t magic)
374{
375 struct xfs_inode *dp = args->dp;
376 struct xfs_trans *tp = args->trans;
377 struct xfs_mount *mp = dp->i_mount;
378 struct xfs_buf *bp;
379 int error;
380
381 ASSERT(magic == XFS_DIR2_LEAF1_MAGIC || magic == XFS_DIR2_LEAFN_MAGIC);
382 ASSERT(bno >= xfs_dir2_byte_to_db(args->geo, XFS_DIR2_LEAF_OFFSET) &&
383 bno < xfs_dir2_byte_to_db(args->geo, XFS_DIR2_FREE_OFFSET));
384
385 error = xfs_da_get_buf(tp, dp, xfs_dir2_db_to_da(args->geo, bno),
386 -1, &bp, XFS_DATA_FORK);
387 if (error)
388 return error;
389
390 xfs_dir3_leaf_init(mp, tp, bp, dp->i_ino, magic);
391 xfs_dir3_leaf_log_header(args, bp);
392 if (magic == XFS_DIR2_LEAF1_MAGIC)
393 xfs_dir3_leaf_log_tail(args, bp);
394 *bpp = bp;
395 return 0;
396}
397
398
399
400
401int
402xfs_dir2_block_to_leaf(
403 xfs_da_args_t *args,
404 struct xfs_buf *dbp)
405{
406 __be16 *bestsp;
407 xfs_dablk_t blkno;
408 xfs_dir2_data_hdr_t *hdr;
409 xfs_dir2_leaf_entry_t *blp;
410 xfs_dir2_block_tail_t *btp;
411 xfs_inode_t *dp;
412 int error;
413 struct xfs_buf *lbp;
414 xfs_dir2_db_t ldb;
415 xfs_dir2_leaf_t *leaf;
416 xfs_dir2_leaf_tail_t *ltp;
417 int needlog;
418 int needscan;
419 xfs_trans_t *tp;
420 struct xfs_dir2_data_free *bf;
421 struct xfs_dir2_leaf_entry *ents;
422 struct xfs_dir3_icleaf_hdr leafhdr;
423
424 trace_xfs_dir2_block_to_leaf(args);
425
426 dp = args->dp;
427 tp = args->trans;
428
429
430
431
432
433 if ((error = xfs_da_grow_inode(args, &blkno))) {
434 return error;
435 }
436 ldb = xfs_dir2_da_to_db(args->geo, blkno);
437 ASSERT(ldb == xfs_dir2_byte_to_db(args->geo, XFS_DIR2_LEAF_OFFSET));
438
439
440
441 error = xfs_dir3_leaf_get_buf(args, ldb, &lbp, XFS_DIR2_LEAF1_MAGIC);
442 if (error)
443 return error;
444
445 leaf = lbp->b_addr;
446 hdr = dbp->b_addr;
447 xfs_dir3_data_check(dp, dbp);
448 btp = xfs_dir2_block_tail_p(args->geo, hdr);
449 blp = xfs_dir2_block_leaf_p(btp);
450 bf = dp->d_ops->data_bestfree_p(hdr);
451 ents = dp->d_ops->leaf_ents_p(leaf);
452
453
454
455
456 dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
457 leafhdr.count = be32_to_cpu(btp->count);
458 leafhdr.stale = be32_to_cpu(btp->stale);
459 dp->d_ops->leaf_hdr_to_disk(leaf, &leafhdr);
460 xfs_dir3_leaf_log_header(args, lbp);
461
462
463
464
465
466 memcpy(ents, blp, be32_to_cpu(btp->count) * sizeof(xfs_dir2_leaf_entry_t));
467 xfs_dir3_leaf_log_ents(args, lbp, 0, leafhdr.count - 1);
468 needscan = 0;
469 needlog = 1;
470
471
472
473
474 xfs_dir2_data_make_free(args, dbp,
475 (xfs_dir2_data_aoff_t)((char *)blp - (char *)hdr),
476 (xfs_dir2_data_aoff_t)((char *)hdr + args->geo->blksize -
477 (char *)blp),
478 &needlog, &needscan);
479
480
481
482 dbp->b_ops = &xfs_dir3_data_buf_ops;
483 xfs_trans_buf_set_type(tp, dbp, XFS_BLFT_DIR_DATA_BUF);
484 if (hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC))
485 hdr->magic = cpu_to_be32(XFS_DIR2_DATA_MAGIC);
486 else
487 hdr->magic = cpu_to_be32(XFS_DIR3_DATA_MAGIC);
488
489 if (needscan)
490 xfs_dir2_data_freescan(dp, hdr, &needlog);
491
492
493
494 ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
495 ltp->bestcount = cpu_to_be32(1);
496 bestsp = xfs_dir2_leaf_bests_p(ltp);
497 bestsp[0] = bf[0].length;
498
499
500
501 if (needlog)
502 xfs_dir2_data_log_header(args, dbp);
503 xfs_dir3_leaf_check(dp, lbp);
504 xfs_dir3_data_check(dp, dbp);
505 xfs_dir3_leaf_log_bests(args, lbp, 0, 0);
506 return 0;
507}
508
509STATIC void
510xfs_dir3_leaf_find_stale(
511 struct xfs_dir3_icleaf_hdr *leafhdr,
512 struct xfs_dir2_leaf_entry *ents,
513 int index,
514 int *lowstale,
515 int *highstale)
516{
517
518
519
520 for (*lowstale = index - 1; *lowstale >= 0; --*lowstale) {
521 if (ents[*lowstale].address ==
522 cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
523 break;
524 }
525
526
527
528
529
530
531 for (*highstale = index; *highstale < leafhdr->count; ++*highstale) {
532 if (ents[*highstale].address ==
533 cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
534 break;
535 if (*lowstale >= 0 && index - *lowstale <= *highstale - index)
536 break;
537 }
538}
539
540struct xfs_dir2_leaf_entry *
541xfs_dir3_leaf_find_entry(
542 struct xfs_dir3_icleaf_hdr *leafhdr,
543 struct xfs_dir2_leaf_entry *ents,
544 int index,
545 int compact,
546 int lowstale,
547 int highstale,
548 int *lfloglow,
549 int *lfloghigh)
550{
551 if (!leafhdr->stale) {
552 xfs_dir2_leaf_entry_t *lep;
553
554
555
556
557
558
559 lep = &ents[index];
560 if (index < leafhdr->count)
561 memmove(lep + 1, lep,
562 (leafhdr->count - index) * sizeof(*lep));
563
564
565
566
567 *lfloglow = index;
568 *lfloghigh = leafhdr->count++;
569 return lep;
570 }
571
572
573
574
575
576
577
578
579
580
581 if (compact == 0)
582 xfs_dir3_leaf_find_stale(leafhdr, ents, index,
583 &lowstale, &highstale);
584
585
586
587
588 if (lowstale >= 0 &&
589 (highstale == leafhdr->count ||
590 index - lowstale - 1 < highstale - index)) {
591 ASSERT(index - lowstale - 1 >= 0);
592 ASSERT(ents[lowstale].address ==
593 cpu_to_be32(XFS_DIR2_NULL_DATAPTR));
594
595
596
597
598
599 if (index - lowstale - 1 > 0) {
600 memmove(&ents[lowstale], &ents[lowstale + 1],
601 (index - lowstale - 1) *
602 sizeof(xfs_dir2_leaf_entry_t));
603 }
604 *lfloglow = MIN(lowstale, *lfloglow);
605 *lfloghigh = MAX(index - 1, *lfloghigh);
606 leafhdr->stale--;
607 return &ents[index - 1];
608 }
609
610
611
612
613 ASSERT(highstale - index >= 0);
614 ASSERT(ents[highstale].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR));
615
616
617
618
619
620 if (highstale - index > 0) {
621 memmove(&ents[index + 1], &ents[index],
622 (highstale - index) * sizeof(xfs_dir2_leaf_entry_t));
623 }
624 *lfloglow = MIN(index, *lfloglow);
625 *lfloghigh = MAX(highstale, *lfloghigh);
626 leafhdr->stale--;
627 return &ents[index];
628}
629
630
631
632
633int
634xfs_dir2_leaf_addname(
635 xfs_da_args_t *args)
636{
637 __be16 *bestsp;
638 int compact;
639 xfs_dir2_data_hdr_t *hdr;
640 struct xfs_buf *dbp;
641 xfs_dir2_data_entry_t *dep;
642 xfs_inode_t *dp;
643 xfs_dir2_data_unused_t *dup;
644 int error;
645 int grown;
646 int highstale;
647 int i;
648 int index;
649 struct xfs_buf *lbp;
650 xfs_dir2_leaf_t *leaf;
651 int length;
652 xfs_dir2_leaf_entry_t *lep;
653 int lfloglow;
654 int lfloghigh;
655 int lowstale;
656 xfs_dir2_leaf_tail_t *ltp;
657 int needbytes;
658 int needlog;
659 int needscan;
660 __be16 *tagp;
661 xfs_trans_t *tp;
662 xfs_dir2_db_t use_block;
663 struct xfs_dir2_data_free *bf;
664 struct xfs_dir2_leaf_entry *ents;
665 struct xfs_dir3_icleaf_hdr leafhdr;
666
667 trace_xfs_dir2_leaf_addname(args);
668
669 dp = args->dp;
670 tp = args->trans;
671
672 error = xfs_dir3_leaf_read(tp, dp, args->geo->leafblk, -1, &lbp);
673 if (error)
674 return error;
675
676
677
678
679
680
681
682 index = xfs_dir2_leaf_search_hash(args, lbp);
683 leaf = lbp->b_addr;
684 ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
685 ents = dp->d_ops->leaf_ents_p(leaf);
686 dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
687 bestsp = xfs_dir2_leaf_bests_p(ltp);
688 length = dp->d_ops->data_entsize(args->namelen);
689
690
691
692
693
694
695
696 for (use_block = -1, lep = &ents[index];
697 index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval;
698 index++, lep++) {
699 if (be32_to_cpu(lep->address) == XFS_DIR2_NULL_DATAPTR)
700 continue;
701 i = xfs_dir2_dataptr_to_db(args->geo, be32_to_cpu(lep->address));
702 ASSERT(i < be32_to_cpu(ltp->bestcount));
703 ASSERT(bestsp[i] != cpu_to_be16(NULLDATAOFF));
704 if (be16_to_cpu(bestsp[i]) >= length) {
705 use_block = i;
706 break;
707 }
708 }
709
710
711
712 if (use_block == -1) {
713 for (i = 0; i < be32_to_cpu(ltp->bestcount); i++) {
714
715
716
717 if (bestsp[i] == cpu_to_be16(NULLDATAOFF) &&
718 use_block == -1)
719 use_block = i;
720 else if (be16_to_cpu(bestsp[i]) >= length) {
721 use_block = i;
722 break;
723 }
724 }
725 }
726
727
728
729 needbytes = 0;
730 if (!leafhdr.stale)
731 needbytes += sizeof(xfs_dir2_leaf_entry_t);
732 if (use_block == -1)
733 needbytes += sizeof(xfs_dir2_data_off_t);
734
735
736
737
738
739 if (use_block != -1 && bestsp[use_block] == cpu_to_be16(NULLDATAOFF))
740 use_block = -1;
741
742
743
744
745 if ((char *)bestsp - (char *)&ents[leafhdr.count] < needbytes &&
746 leafhdr.stale > 1)
747 compact = 1;
748
749
750
751
752
753 else if ((char *)bestsp - (char *)&ents[leafhdr.count] < needbytes) {
754
755
756
757 if ((args->op_flags & XFS_DA_OP_JUSTCHECK) ||
758 args->total == 0) {
759 xfs_trans_brelse(tp, lbp);
760 return -ENOSPC;
761 }
762
763
764
765 error = xfs_dir2_leaf_to_node(args, lbp);
766 if (error)
767 return error;
768
769
770
771 return xfs_dir2_node_addname(args);
772 }
773
774
775
776 else
777 compact = 0;
778
779
780
781
782 if (args->op_flags & XFS_DA_OP_JUSTCHECK) {
783 xfs_trans_brelse(tp, lbp);
784 return use_block == -1 ? -ENOSPC : 0;
785 }
786
787
788
789
790 if (args->total == 0 && use_block == -1) {
791 xfs_trans_brelse(tp, lbp);
792 return -ENOSPC;
793 }
794
795
796
797
798
799
800 if (compact) {
801 xfs_dir3_leaf_compact_x1(&leafhdr, ents, &index, &lowstale,
802 &highstale, &lfloglow, &lfloghigh);
803 }
804
805
806
807
808 else if (leafhdr.stale) {
809 lfloglow = leafhdr.count;
810 lfloghigh = -1;
811 }
812
813
814
815
816 if (use_block == -1) {
817
818
819
820 if ((error = xfs_dir2_grow_inode(args, XFS_DIR2_DATA_SPACE,
821 &use_block))) {
822 xfs_trans_brelse(tp, lbp);
823 return error;
824 }
825
826
827
828 if ((error = xfs_dir3_data_init(args, use_block, &dbp))) {
829 xfs_trans_brelse(tp, lbp);
830 return error;
831 }
832
833
834
835
836 if (use_block >= be32_to_cpu(ltp->bestcount)) {
837 bestsp--;
838 memmove(&bestsp[0], &bestsp[1],
839 be32_to_cpu(ltp->bestcount) * sizeof(bestsp[0]));
840 be32_add_cpu(<p->bestcount, 1);
841 xfs_dir3_leaf_log_tail(args, lbp);
842 xfs_dir3_leaf_log_bests(args, lbp, 0,
843 be32_to_cpu(ltp->bestcount) - 1);
844 }
845
846
847
848 else
849 xfs_dir3_leaf_log_bests(args, lbp, use_block, use_block);
850 hdr = dbp->b_addr;
851 bf = dp->d_ops->data_bestfree_p(hdr);
852 bestsp[use_block] = bf[0].length;
853 grown = 1;
854 } else {
855
856
857
858
859 error = xfs_dir3_data_read(tp, dp,
860 xfs_dir2_db_to_da(args->geo, use_block),
861 -1, &dbp);
862 if (error) {
863 xfs_trans_brelse(tp, lbp);
864 return error;
865 }
866 hdr = dbp->b_addr;
867 bf = dp->d_ops->data_bestfree_p(hdr);
868 grown = 0;
869 }
870
871
872
873 dup = (xfs_dir2_data_unused_t *)
874 ((char *)hdr + be16_to_cpu(bf[0].offset));
875 ASSERT(be16_to_cpu(dup->length) >= length);
876 needscan = needlog = 0;
877
878
879
880 xfs_dir2_data_use_free(args, dbp, dup,
881 (xfs_dir2_data_aoff_t)((char *)dup - (char *)hdr), length,
882 &needlog, &needscan);
883
884
885
886 dep = (xfs_dir2_data_entry_t *)dup;
887 dep->inumber = cpu_to_be64(args->inumber);
888 dep->namelen = args->namelen;
889 memcpy(dep->name, args->name, dep->namelen);
890 dp->d_ops->data_put_ftype(dep, args->filetype);
891 tagp = dp->d_ops->data_entry_tag_p(dep);
892 *tagp = cpu_to_be16((char *)dep - (char *)hdr);
893
894
895
896 if (needscan)
897 xfs_dir2_data_freescan(dp, hdr, &needlog);
898
899
900
901 if (needlog)
902 xfs_dir2_data_log_header(args, dbp);
903 xfs_dir2_data_log_entry(args, dbp, dep);
904
905
906
907
908 if (be16_to_cpu(bestsp[use_block]) != be16_to_cpu(bf[0].length)) {
909 bestsp[use_block] = bf[0].length;
910 if (!grown)
911 xfs_dir3_leaf_log_bests(args, lbp, use_block, use_block);
912 }
913
914 lep = xfs_dir3_leaf_find_entry(&leafhdr, ents, index, compact, lowstale,
915 highstale, &lfloglow, &lfloghigh);
916
917
918
919
920 lep->hashval = cpu_to_be32(args->hashval);
921 lep->address = cpu_to_be32(
922 xfs_dir2_db_off_to_dataptr(args->geo, use_block,
923 be16_to_cpu(*tagp)));
924
925
926
927 dp->d_ops->leaf_hdr_to_disk(leaf, &leafhdr);
928 xfs_dir3_leaf_log_header(args, lbp);
929 xfs_dir3_leaf_log_ents(args, lbp, lfloglow, lfloghigh);
930 xfs_dir3_leaf_check(dp, lbp);
931 xfs_dir3_data_check(dp, dbp);
932 return 0;
933}
934
935
936
937
938
939void
940xfs_dir3_leaf_compact(
941 xfs_da_args_t *args,
942 struct xfs_dir3_icleaf_hdr *leafhdr,
943 struct xfs_buf *bp)
944{
945 int from;
946 xfs_dir2_leaf_t *leaf;
947 int loglow;
948 int to;
949 struct xfs_dir2_leaf_entry *ents;
950 struct xfs_inode *dp = args->dp;
951
952 leaf = bp->b_addr;
953 if (!leafhdr->stale)
954 return;
955
956
957
958
959 ents = dp->d_ops->leaf_ents_p(leaf);
960 for (from = to = 0, loglow = -1; from < leafhdr->count; from++) {
961 if (ents[from].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
962 continue;
963
964
965
966 if (from > to) {
967 if (loglow == -1)
968 loglow = to;
969 ents[to] = ents[from];
970 }
971 to++;
972 }
973
974
975
976 ASSERT(leafhdr->stale == from - to);
977 leafhdr->count -= leafhdr->stale;
978 leafhdr->stale = 0;
979
980 dp->d_ops->leaf_hdr_to_disk(leaf, leafhdr);
981 xfs_dir3_leaf_log_header(args, bp);
982 if (loglow != -1)
983 xfs_dir3_leaf_log_ents(args, bp, loglow, to - 1);
984}
985
986
987
988
989
990
991
992
993
994void
995xfs_dir3_leaf_compact_x1(
996 struct xfs_dir3_icleaf_hdr *leafhdr,
997 struct xfs_dir2_leaf_entry *ents,
998 int *indexp,
999 int *lowstalep,
1000 int *highstalep,
1001 int *lowlogp,
1002 int *highlogp)
1003{
1004 int from;
1005 int highstale;
1006 int index;
1007 int keepstale;
1008 int lowstale;
1009 int newindex=0;
1010 int to;
1011
1012 ASSERT(leafhdr->stale > 1);
1013 index = *indexp;
1014
1015 xfs_dir3_leaf_find_stale(leafhdr, ents, index, &lowstale, &highstale);
1016
1017
1018
1019
1020 if (lowstale >= 0 &&
1021 (highstale == leafhdr->count ||
1022 index - lowstale <= highstale - index))
1023 keepstale = lowstale;
1024 else
1025 keepstale = highstale;
1026
1027
1028
1029
1030 for (from = to = 0; from < leafhdr->count; from++) {
1031
1032
1033
1034 if (index == from)
1035 newindex = to;
1036 if (from != keepstale &&
1037 ents[from].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) {
1038 if (from == to)
1039 *lowlogp = to;
1040 continue;
1041 }
1042
1043
1044
1045 if (from == keepstale)
1046 lowstale = highstale = to;
1047
1048
1049
1050 if (from > to)
1051 ents[to] = ents[from];
1052 to++;
1053 }
1054 ASSERT(from > to);
1055
1056
1057
1058
1059 if (index == from)
1060 newindex = to;
1061 *indexp = newindex;
1062
1063
1064
1065 leafhdr->count -= from - to;
1066 leafhdr->stale = 1;
1067
1068
1069
1070
1071 if (lowstale >= newindex)
1072 lowstale = -1;
1073 else
1074 highstale = leafhdr->count;
1075 *highlogp = leafhdr->count - 1;
1076 *lowstalep = lowstale;
1077 *highstalep = highstale;
1078}
1079
1080
1081
1082
1083static void
1084xfs_dir3_leaf_log_bests(
1085 struct xfs_da_args *args,
1086 struct xfs_buf *bp,
1087 int first,
1088 int last)
1089{
1090 __be16 *firstb;
1091 __be16 *lastb;
1092 struct xfs_dir2_leaf *leaf = bp->b_addr;
1093 xfs_dir2_leaf_tail_t *ltp;
1094
1095 ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) ||
1096 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC));
1097
1098 ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
1099 firstb = xfs_dir2_leaf_bests_p(ltp) + first;
1100 lastb = xfs_dir2_leaf_bests_p(ltp) + last;
1101 xfs_trans_log_buf(args->trans, bp,
1102 (uint)((char *)firstb - (char *)leaf),
1103 (uint)((char *)lastb - (char *)leaf + sizeof(*lastb) - 1));
1104}
1105
1106
1107
1108
1109void
1110xfs_dir3_leaf_log_ents(
1111 struct xfs_da_args *args,
1112 struct xfs_buf *bp,
1113 int first,
1114 int last)
1115{
1116 xfs_dir2_leaf_entry_t *firstlep;
1117 xfs_dir2_leaf_entry_t *lastlep;
1118 struct xfs_dir2_leaf *leaf = bp->b_addr;
1119 struct xfs_dir2_leaf_entry *ents;
1120
1121 ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) ||
1122 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) ||
1123 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
1124 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC));
1125
1126 ents = args->dp->d_ops->leaf_ents_p(leaf);
1127 firstlep = &ents[first];
1128 lastlep = &ents[last];
1129 xfs_trans_log_buf(args->trans, bp,
1130 (uint)((char *)firstlep - (char *)leaf),
1131 (uint)((char *)lastlep - (char *)leaf + sizeof(*lastlep) - 1));
1132}
1133
1134
1135
1136
1137void
1138xfs_dir3_leaf_log_header(
1139 struct xfs_da_args *args,
1140 struct xfs_buf *bp)
1141{
1142 struct xfs_dir2_leaf *leaf = bp->b_addr;
1143
1144 ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) ||
1145 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) ||
1146 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
1147 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC));
1148
1149 xfs_trans_log_buf(args->trans, bp,
1150 (uint)((char *)&leaf->hdr - (char *)leaf),
1151 args->dp->d_ops->leaf_hdr_size - 1);
1152}
1153
1154
1155
1156
1157STATIC void
1158xfs_dir3_leaf_log_tail(
1159 struct xfs_da_args *args,
1160 struct xfs_buf *bp)
1161{
1162 struct xfs_dir2_leaf *leaf = bp->b_addr;
1163 xfs_dir2_leaf_tail_t *ltp;
1164
1165 ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) ||
1166 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) ||
1167 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
1168 leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC));
1169
1170 ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
1171 xfs_trans_log_buf(args->trans, bp, (uint)((char *)ltp - (char *)leaf),
1172 (uint)(args->geo->blksize - 1));
1173}
1174
1175
1176
1177
1178
1179
1180int
1181xfs_dir2_leaf_lookup(
1182 xfs_da_args_t *args)
1183{
1184 struct xfs_buf *dbp;
1185 xfs_dir2_data_entry_t *dep;
1186 xfs_inode_t *dp;
1187 int error;
1188 int index;
1189 struct xfs_buf *lbp;
1190 xfs_dir2_leaf_t *leaf;
1191 xfs_dir2_leaf_entry_t *lep;
1192 xfs_trans_t *tp;
1193 struct xfs_dir2_leaf_entry *ents;
1194
1195 trace_xfs_dir2_leaf_lookup(args);
1196
1197
1198
1199
1200 if ((error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp))) {
1201 return error;
1202 }
1203 tp = args->trans;
1204 dp = args->dp;
1205 xfs_dir3_leaf_check(dp, lbp);
1206 leaf = lbp->b_addr;
1207 ents = dp->d_ops->leaf_ents_p(leaf);
1208
1209
1210
1211 lep = &ents[index];
1212
1213
1214
1215
1216 dep = (xfs_dir2_data_entry_t *)
1217 ((char *)dbp->b_addr +
1218 xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address)));
1219
1220
1221
1222 args->inumber = be64_to_cpu(dep->inumber);
1223 args->filetype = dp->d_ops->data_get_ftype(dep);
1224 error = xfs_dir_cilookup_result(args, dep->name, dep->namelen);
1225 xfs_trans_brelse(tp, dbp);
1226 xfs_trans_brelse(tp, lbp);
1227 return error;
1228}
1229
1230
1231
1232
1233
1234
1235
1236static int
1237xfs_dir2_leaf_lookup_int(
1238 xfs_da_args_t *args,
1239 struct xfs_buf **lbpp,
1240 int *indexp,
1241 struct xfs_buf **dbpp)
1242{
1243 xfs_dir2_db_t curdb = -1;
1244 struct xfs_buf *dbp = NULL;
1245 xfs_dir2_data_entry_t *dep;
1246 xfs_inode_t *dp;
1247 int error;
1248 int index;
1249 struct xfs_buf *lbp;
1250 xfs_dir2_leaf_entry_t *lep;
1251 xfs_dir2_leaf_t *leaf;
1252 xfs_mount_t *mp;
1253 xfs_dir2_db_t newdb;
1254 xfs_trans_t *tp;
1255 xfs_dir2_db_t cidb = -1;
1256 enum xfs_dacmp cmp;
1257 struct xfs_dir2_leaf_entry *ents;
1258 struct xfs_dir3_icleaf_hdr leafhdr;
1259
1260 dp = args->dp;
1261 tp = args->trans;
1262 mp = dp->i_mount;
1263
1264 error = xfs_dir3_leaf_read(tp, dp, args->geo->leafblk, -1, &lbp);
1265 if (error)
1266 return error;
1267
1268 *lbpp = lbp;
1269 leaf = lbp->b_addr;
1270 xfs_dir3_leaf_check(dp, lbp);
1271 ents = dp->d_ops->leaf_ents_p(leaf);
1272 dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
1273
1274
1275
1276
1277 index = xfs_dir2_leaf_search_hash(args, lbp);
1278
1279
1280
1281
1282 for (lep = &ents[index];
1283 index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval;
1284 lep++, index++) {
1285
1286
1287
1288 if (be32_to_cpu(lep->address) == XFS_DIR2_NULL_DATAPTR)
1289 continue;
1290
1291
1292
1293 newdb = xfs_dir2_dataptr_to_db(args->geo,
1294 be32_to_cpu(lep->address));
1295
1296
1297
1298
1299 if (newdb != curdb) {
1300 if (dbp)
1301 xfs_trans_brelse(tp, dbp);
1302 error = xfs_dir3_data_read(tp, dp,
1303 xfs_dir2_db_to_da(args->geo, newdb),
1304 -1, &dbp);
1305 if (error) {
1306 xfs_trans_brelse(tp, lbp);
1307 return error;
1308 }
1309 curdb = newdb;
1310 }
1311
1312
1313
1314 dep = (xfs_dir2_data_entry_t *)((char *)dbp->b_addr +
1315 xfs_dir2_dataptr_to_off(args->geo,
1316 be32_to_cpu(lep->address)));
1317
1318
1319
1320
1321
1322 cmp = mp->m_dirnameops->compname(args, dep->name, dep->namelen);
1323 if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) {
1324 args->cmpresult = cmp;
1325 *indexp = index;
1326
1327 if (cmp == XFS_CMP_EXACT) {
1328 *dbpp = dbp;
1329 return 0;
1330 }
1331 cidb = curdb;
1332 }
1333 }
1334 ASSERT(args->op_flags & XFS_DA_OP_OKNOENT);
1335
1336
1337
1338
1339
1340 if (args->cmpresult == XFS_CMP_CASE) {
1341 ASSERT(cidb != -1);
1342 if (cidb != curdb) {
1343 xfs_trans_brelse(tp, dbp);
1344 error = xfs_dir3_data_read(tp, dp,
1345 xfs_dir2_db_to_da(args->geo, cidb),
1346 -1, &dbp);
1347 if (error) {
1348 xfs_trans_brelse(tp, lbp);
1349 return error;
1350 }
1351 }
1352 *dbpp = dbp;
1353 return 0;
1354 }
1355
1356
1357
1358 ASSERT(cidb == -1);
1359 if (dbp)
1360 xfs_trans_brelse(tp, dbp);
1361 xfs_trans_brelse(tp, lbp);
1362 return -ENOENT;
1363}
1364
1365
1366
1367
1368int
1369xfs_dir2_leaf_removename(
1370 xfs_da_args_t *args)
1371{
1372 __be16 *bestsp;
1373 xfs_dir2_data_hdr_t *hdr;
1374 xfs_dir2_db_t db;
1375 struct xfs_buf *dbp;
1376 xfs_dir2_data_entry_t *dep;
1377 xfs_inode_t *dp;
1378 int error;
1379 xfs_dir2_db_t i;
1380 int index;
1381 struct xfs_buf *lbp;
1382 xfs_dir2_leaf_t *leaf;
1383 xfs_dir2_leaf_entry_t *lep;
1384 xfs_dir2_leaf_tail_t *ltp;
1385 int needlog;
1386 int needscan;
1387 xfs_dir2_data_off_t oldbest;
1388 struct xfs_dir2_data_free *bf;
1389 struct xfs_dir2_leaf_entry *ents;
1390 struct xfs_dir3_icleaf_hdr leafhdr;
1391
1392 trace_xfs_dir2_leaf_removename(args);
1393
1394
1395
1396
1397 if ((error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp))) {
1398 return error;
1399 }
1400 dp = args->dp;
1401 leaf = lbp->b_addr;
1402 hdr = dbp->b_addr;
1403 xfs_dir3_data_check(dp, dbp);
1404 bf = dp->d_ops->data_bestfree_p(hdr);
1405 dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
1406 ents = dp->d_ops->leaf_ents_p(leaf);
1407
1408
1409
1410 lep = &ents[index];
1411 db = xfs_dir2_dataptr_to_db(args->geo, be32_to_cpu(lep->address));
1412 dep = (xfs_dir2_data_entry_t *)((char *)hdr +
1413 xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address)));
1414 needscan = needlog = 0;
1415 oldbest = be16_to_cpu(bf[0].length);
1416 ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
1417 bestsp = xfs_dir2_leaf_bests_p(ltp);
1418 ASSERT(be16_to_cpu(bestsp[db]) == oldbest);
1419
1420
1421
1422 xfs_dir2_data_make_free(args, dbp,
1423 (xfs_dir2_data_aoff_t)((char *)dep - (char *)hdr),
1424 dp->d_ops->data_entsize(dep->namelen), &needlog, &needscan);
1425
1426
1427
1428 leafhdr.stale++;
1429 dp->d_ops->leaf_hdr_to_disk(leaf, &leafhdr);
1430 xfs_dir3_leaf_log_header(args, lbp);
1431
1432 lep->address = cpu_to_be32(XFS_DIR2_NULL_DATAPTR);
1433 xfs_dir3_leaf_log_ents(args, lbp, index, index);
1434
1435
1436
1437
1438
1439 if (needscan)
1440 xfs_dir2_data_freescan(dp, hdr, &needlog);
1441 if (needlog)
1442 xfs_dir2_data_log_header(args, dbp);
1443
1444
1445
1446
1447 if (be16_to_cpu(bf[0].length) != oldbest) {
1448 bestsp[db] = bf[0].length;
1449 xfs_dir3_leaf_log_bests(args, lbp, db, db);
1450 }
1451 xfs_dir3_data_check(dp, dbp);
1452
1453
1454
1455 if (be16_to_cpu(bf[0].length) ==
1456 args->geo->blksize - dp->d_ops->data_entry_offset) {
1457 ASSERT(db != args->geo->datablk);
1458 if ((error = xfs_dir2_shrink_inode(args, db, dbp))) {
1459
1460
1461
1462
1463
1464
1465 if (error == -ENOSPC && args->total == 0)
1466 error = 0;
1467 xfs_dir3_leaf_check(dp, lbp);
1468 return error;
1469 }
1470 dbp = NULL;
1471
1472
1473
1474
1475 if (db == be32_to_cpu(ltp->bestcount) - 1) {
1476
1477
1478
1479 for (i = db - 1; i > 0; i--) {
1480 if (bestsp[i] != cpu_to_be16(NULLDATAOFF))
1481 break;
1482 }
1483
1484
1485
1486
1487 memmove(&bestsp[db - i], bestsp,
1488 (be32_to_cpu(ltp->bestcount) - (db - i)) * sizeof(*bestsp));
1489 be32_add_cpu(<p->bestcount, -(db - i));
1490 xfs_dir3_leaf_log_tail(args, lbp);
1491 xfs_dir3_leaf_log_bests(args, lbp, 0,
1492 be32_to_cpu(ltp->bestcount) - 1);
1493 } else
1494 bestsp[db] = cpu_to_be16(NULLDATAOFF);
1495 }
1496
1497
1498
1499 else if (db != args->geo->datablk)
1500 dbp = NULL;
1501
1502 xfs_dir3_leaf_check(dp, lbp);
1503
1504
1505
1506 return xfs_dir2_leaf_to_block(args, lbp, dbp);
1507}
1508
1509
1510
1511
1512int
1513xfs_dir2_leaf_replace(
1514 xfs_da_args_t *args)
1515{
1516 struct xfs_buf *dbp;
1517 xfs_dir2_data_entry_t *dep;
1518 xfs_inode_t *dp;
1519 int error;
1520 int index;
1521 struct xfs_buf *lbp;
1522 xfs_dir2_leaf_t *leaf;
1523 xfs_dir2_leaf_entry_t *lep;
1524 xfs_trans_t *tp;
1525 struct xfs_dir2_leaf_entry *ents;
1526
1527 trace_xfs_dir2_leaf_replace(args);
1528
1529
1530
1531
1532 if ((error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp))) {
1533 return error;
1534 }
1535 dp = args->dp;
1536 leaf = lbp->b_addr;
1537 ents = dp->d_ops->leaf_ents_p(leaf);
1538
1539
1540
1541 lep = &ents[index];
1542
1543
1544
1545 dep = (xfs_dir2_data_entry_t *)
1546 ((char *)dbp->b_addr +
1547 xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address)));
1548 ASSERT(args->inumber != be64_to_cpu(dep->inumber));
1549
1550
1551
1552 dep->inumber = cpu_to_be64(args->inumber);
1553 dp->d_ops->data_put_ftype(dep, args->filetype);
1554 tp = args->trans;
1555 xfs_dir2_data_log_entry(args, dbp, dep);
1556 xfs_dir3_leaf_check(dp, lbp);
1557 xfs_trans_brelse(tp, lbp);
1558 return 0;
1559}
1560
1561
1562
1563
1564
1565
1566int
1567xfs_dir2_leaf_search_hash(
1568 xfs_da_args_t *args,
1569 struct xfs_buf *lbp)
1570{
1571 xfs_dahash_t hash=0;
1572 xfs_dahash_t hashwant;
1573 int high;
1574 int low;
1575 xfs_dir2_leaf_t *leaf;
1576 xfs_dir2_leaf_entry_t *lep;
1577 int mid=0;
1578 struct xfs_dir2_leaf_entry *ents;
1579 struct xfs_dir3_icleaf_hdr leafhdr;
1580
1581 leaf = lbp->b_addr;
1582 ents = args->dp->d_ops->leaf_ents_p(leaf);
1583 args->dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
1584
1585
1586
1587
1588
1589 for (lep = ents, low = 0, high = leafhdr.count - 1,
1590 hashwant = args->hashval;
1591 low <= high; ) {
1592 mid = (low + high) >> 1;
1593 if ((hash = be32_to_cpu(lep[mid].hashval)) == hashwant)
1594 break;
1595 if (hash < hashwant)
1596 low = mid + 1;
1597 else
1598 high = mid - 1;
1599 }
1600
1601
1602
1603 if (hash == hashwant) {
1604 while (mid > 0 && be32_to_cpu(lep[mid - 1].hashval) == hashwant) {
1605 mid--;
1606 }
1607 }
1608
1609
1610
1611 else if (hash < hashwant)
1612 mid++;
1613 return mid;
1614}
1615
1616
1617
1618
1619
1620int
1621xfs_dir2_leaf_trim_data(
1622 xfs_da_args_t *args,
1623 struct xfs_buf *lbp,
1624 xfs_dir2_db_t db)
1625{
1626 __be16 *bestsp;
1627 struct xfs_buf *dbp;
1628 xfs_inode_t *dp;
1629 int error;
1630 xfs_dir2_leaf_t *leaf;
1631 xfs_dir2_leaf_tail_t *ltp;
1632 xfs_trans_t *tp;
1633
1634 dp = args->dp;
1635 tp = args->trans;
1636
1637
1638
1639 error = xfs_dir3_data_read(tp, dp, xfs_dir2_db_to_da(args->geo, db),
1640 -1, &dbp);
1641 if (error)
1642 return error;
1643
1644 leaf = lbp->b_addr;
1645 ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
1646
1647#ifdef DEBUG
1648{
1649 struct xfs_dir2_data_hdr *hdr = dbp->b_addr;
1650 struct xfs_dir2_data_free *bf = dp->d_ops->data_bestfree_p(hdr);
1651
1652 ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
1653 hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC));
1654 ASSERT(be16_to_cpu(bf[0].length) ==
1655 args->geo->blksize - dp->d_ops->data_entry_offset);
1656 ASSERT(db == be32_to_cpu(ltp->bestcount) - 1);
1657}
1658#endif
1659
1660
1661
1662
1663 if ((error = xfs_dir2_shrink_inode(args, db, dbp))) {
1664 ASSERT(error != -ENOSPC);
1665 xfs_trans_brelse(tp, dbp);
1666 return error;
1667 }
1668
1669
1670
1671 bestsp = xfs_dir2_leaf_bests_p(ltp);
1672 be32_add_cpu(<p->bestcount, -1);
1673 memmove(&bestsp[1], &bestsp[0], be32_to_cpu(ltp->bestcount) * sizeof(*bestsp));
1674 xfs_dir3_leaf_log_tail(args, lbp);
1675 xfs_dir3_leaf_log_bests(args, lbp, 0, be32_to_cpu(ltp->bestcount) - 1);
1676 return 0;
1677}
1678
1679static inline size_t
1680xfs_dir3_leaf_size(
1681 struct xfs_dir3_icleaf_hdr *hdr,
1682 int counts)
1683{
1684 int entries;
1685 int hdrsize;
1686
1687 entries = hdr->count - hdr->stale;
1688 if (hdr->magic == XFS_DIR2_LEAF1_MAGIC ||
1689 hdr->magic == XFS_DIR2_LEAFN_MAGIC)
1690 hdrsize = sizeof(struct xfs_dir2_leaf_hdr);
1691 else
1692 hdrsize = sizeof(struct xfs_dir3_leaf_hdr);
1693
1694 return hdrsize + entries * sizeof(xfs_dir2_leaf_entry_t)
1695 + counts * sizeof(xfs_dir2_data_off_t)
1696 + sizeof(xfs_dir2_leaf_tail_t);
1697}
1698
1699
1700
1701
1702
1703
1704int
1705xfs_dir2_node_to_leaf(
1706 xfs_da_state_t *state)
1707{
1708 xfs_da_args_t *args;
1709 xfs_inode_t *dp;
1710 int error;
1711 struct xfs_buf *fbp;
1712 xfs_fileoff_t fo;
1713 xfs_dir2_free_t *free;
1714 struct xfs_buf *lbp;
1715 xfs_dir2_leaf_tail_t *ltp;
1716 xfs_dir2_leaf_t *leaf;
1717 xfs_mount_t *mp;
1718 int rval;
1719 xfs_trans_t *tp;
1720 struct xfs_dir3_icleaf_hdr leafhdr;
1721 struct xfs_dir3_icfree_hdr freehdr;
1722
1723
1724
1725
1726
1727 if (state->path.active > 1)
1728 return 0;
1729 args = state->args;
1730
1731 trace_xfs_dir2_node_to_leaf(args);
1732
1733 mp = state->mp;
1734 dp = args->dp;
1735 tp = args->trans;
1736
1737
1738
1739 if ((error = xfs_bmap_last_offset(dp, &fo, XFS_DATA_FORK))) {
1740 return error;
1741 }
1742 fo -= args->geo->fsbcount;
1743
1744
1745
1746
1747
1748
1749 while (fo > args->geo->freeblk) {
1750 if ((error = xfs_dir2_node_trim_free(args, fo, &rval))) {
1751 return error;
1752 }
1753 if (rval)
1754 fo -= args->geo->fsbcount;
1755 else
1756 return 0;
1757 }
1758
1759
1760
1761 if ((error = xfs_bmap_last_before(tp, dp, &fo, XFS_DATA_FORK))) {
1762 return error;
1763 }
1764
1765
1766
1767 if (XFS_FSB_TO_B(mp, fo) > XFS_DIR2_LEAF_OFFSET + args->geo->blksize)
1768 return 0;
1769 lbp = state->path.blk[0].bp;
1770 leaf = lbp->b_addr;
1771 dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
1772
1773 ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC ||
1774 leafhdr.magic == XFS_DIR3_LEAFN_MAGIC);
1775
1776
1777
1778
1779 error = xfs_dir2_free_read(tp, dp, args->geo->freeblk, &fbp);
1780 if (error)
1781 return error;
1782 free = fbp->b_addr;
1783 dp->d_ops->free_hdr_from_disk(&freehdr, free);
1784
1785 ASSERT(!freehdr.firstdb);
1786
1787
1788
1789
1790
1791 if (xfs_dir3_leaf_size(&leafhdr, freehdr.nvalid) > args->geo->blksize) {
1792 xfs_trans_brelse(tp, fbp);
1793 return 0;
1794 }
1795
1796
1797
1798
1799 if (leafhdr.stale)
1800 xfs_dir3_leaf_compact(args, &leafhdr, lbp);
1801
1802 lbp->b_ops = &xfs_dir3_leaf1_buf_ops;
1803 xfs_trans_buf_set_type(tp, lbp, XFS_BLFT_DIR_LEAF1_BUF);
1804 leafhdr.magic = (leafhdr.magic == XFS_DIR2_LEAFN_MAGIC)
1805 ? XFS_DIR2_LEAF1_MAGIC
1806 : XFS_DIR3_LEAF1_MAGIC;
1807
1808
1809
1810
1811 ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
1812 ltp->bestcount = cpu_to_be32(freehdr.nvalid);
1813
1814
1815
1816
1817 memcpy(xfs_dir2_leaf_bests_p(ltp), dp->d_ops->free_bests_p(free),
1818 freehdr.nvalid * sizeof(xfs_dir2_data_off_t));
1819
1820 dp->d_ops->leaf_hdr_to_disk(leaf, &leafhdr);
1821 xfs_dir3_leaf_log_header(args, lbp);
1822 xfs_dir3_leaf_log_bests(args, lbp, 0, be32_to_cpu(ltp->bestcount) - 1);
1823 xfs_dir3_leaf_log_tail(args, lbp);
1824 xfs_dir3_leaf_check(dp, lbp);
1825
1826
1827
1828
1829 error = xfs_dir2_shrink_inode(args,
1830 xfs_dir2_byte_to_db(args->geo, XFS_DIR2_FREE_OFFSET),
1831 fbp);
1832 if (error) {
1833
1834
1835
1836
1837
1838 ASSERT(error != -ENOSPC);
1839 return error;
1840 }
1841 fbp = NULL;
1842
1843
1844
1845
1846
1847
1848 error = xfs_dir2_leaf_to_block(args, lbp, NULL);
1849 state->path.blk[0].bp = NULL;
1850 return error;
1851}
1852