1
2
3
4
5
6#include "xfs.h"
7#include "xfs_fs.h"
8#include "xfs_shared.h"
9#include "xfs_format.h"
10#include "xfs_trans_resv.h"
11#include "xfs_mount.h"
12#include "xfs_log_format.h"
13#include "xfs_trans.h"
14#include "xfs_inode.h"
15#include "xfs_icache.h"
16#include "xfs_dir2.h"
17#include "xfs_dir2_priv.h"
18#include "scrub/scrub.h"
19#include "scrub/common.h"
20#include "scrub/dabtree.h"
21
22
23int
24xchk_setup_directory(
25 struct xfs_scrub *sc)
26{
27 return xchk_setup_inode_contents(sc, 0);
28}
29
30
31
32
33
34struct xchk_dir_ctx {
35
36 struct dir_context dir_iter;
37
38 struct xfs_scrub *sc;
39};
40
41
42STATIC int
43xchk_dir_check_ftype(
44 struct xchk_dir_ctx *sdc,
45 xfs_fileoff_t offset,
46 xfs_ino_t inum,
47 int dtype)
48{
49 struct xfs_mount *mp = sdc->sc->mp;
50 struct xfs_inode *ip;
51 int ino_dtype;
52 int error = 0;
53
54 if (!xfs_has_ftype(mp)) {
55 if (dtype != DT_UNKNOWN && dtype != DT_DIR)
56 xchk_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK,
57 offset);
58 goto out;
59 }
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74 error = xfs_iget(mp, sdc->sc->tp, inum, 0, 0, &ip);
75 if (error == -EINVAL || error == -ENOENT) {
76 error = -EFSCORRUPTED;
77 xchk_fblock_process_error(sdc->sc, XFS_DATA_FORK, 0, &error);
78 goto out;
79 }
80 if (!xchk_fblock_xref_process_error(sdc->sc, XFS_DATA_FORK, offset,
81 &error))
82 goto out;
83
84
85 ino_dtype = xfs_dir3_get_dtype(mp,
86 xfs_mode_to_ftype(VFS_I(ip)->i_mode));
87 if (ino_dtype != dtype)
88 xchk_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK, offset);
89 xfs_irele(ip);
90out:
91 return error;
92}
93
94
95
96
97
98
99
100
101
102STATIC int
103xchk_dir_actor(
104 struct dir_context *dir_iter,
105 const char *name,
106 int namelen,
107 loff_t pos,
108 u64 ino,
109 unsigned type)
110{
111 struct xfs_mount *mp;
112 struct xfs_inode *ip;
113 struct xchk_dir_ctx *sdc;
114 struct xfs_name xname;
115 xfs_ino_t lookup_ino;
116 xfs_dablk_t offset;
117 bool checked_ftype = false;
118 int error = 0;
119
120 sdc = container_of(dir_iter, struct xchk_dir_ctx, dir_iter);
121 ip = sdc->sc->ip;
122 mp = ip->i_mount;
123 offset = xfs_dir2_db_to_da(mp->m_dir_geo,
124 xfs_dir2_dataptr_to_db(mp->m_dir_geo, pos));
125
126 if (xchk_should_terminate(sdc->sc, &error))
127 return error;
128
129
130 if (!xfs_verify_dir_ino(mp, ino)) {
131 xchk_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK, offset);
132 goto out;
133 }
134
135
136 if (!xfs_dir2_namecheck(name, namelen)) {
137 xchk_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK, offset);
138 goto out;
139 }
140
141 if (!strncmp(".", name, namelen)) {
142
143 if (xfs_has_ftype(mp) && type != DT_DIR)
144 xchk_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK,
145 offset);
146 checked_ftype = true;
147 if (ino != ip->i_ino)
148 xchk_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK,
149 offset);
150 } else if (!strncmp("..", name, namelen)) {
151
152
153
154
155 if (xfs_has_ftype(mp) && type != DT_DIR)
156 xchk_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK,
157 offset);
158 checked_ftype = true;
159 if (ip->i_ino == mp->m_sb.sb_rootino && ino != ip->i_ino)
160 xchk_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK,
161 offset);
162 }
163
164
165 xname.name = name;
166 xname.len = namelen;
167 xname.type = XFS_DIR3_FT_UNKNOWN;
168
169 error = xfs_dir_lookup(sdc->sc->tp, ip, &xname, &lookup_ino, NULL);
170
171 if (error == -ENOENT)
172 error = -EFSCORRUPTED;
173 if (!xchk_fblock_process_error(sdc->sc, XFS_DATA_FORK, offset,
174 &error))
175 goto out;
176 if (lookup_ino != ino) {
177 xchk_fblock_set_corrupt(sdc->sc, XFS_DATA_FORK, offset);
178 goto out;
179 }
180
181
182 if (!checked_ftype) {
183 error = xchk_dir_check_ftype(sdc, offset, lookup_ino, type);
184 if (error)
185 goto out;
186 }
187out:
188
189
190
191
192
193 if (error == 0 && sdc->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
194 return -EFSCORRUPTED;
195 return error;
196}
197
198
199STATIC int
200xchk_dir_rec(
201 struct xchk_da_btree *ds,
202 int level)
203{
204 struct xfs_da_state_blk *blk = &ds->state->path.blk[level];
205 struct xfs_mount *mp = ds->state->mp;
206 struct xfs_inode *dp = ds->dargs.dp;
207 struct xfs_da_geometry *geo = mp->m_dir_geo;
208 struct xfs_dir2_data_entry *dent;
209 struct xfs_buf *bp;
210 struct xfs_dir2_leaf_entry *ent;
211 unsigned int end;
212 unsigned int iter_off;
213 xfs_ino_t ino;
214 xfs_dablk_t rec_bno;
215 xfs_dir2_db_t db;
216 xfs_dir2_data_aoff_t off;
217 xfs_dir2_dataptr_t ptr;
218 xfs_dahash_t calc_hash;
219 xfs_dahash_t hash;
220 struct xfs_dir3_icleaf_hdr hdr;
221 unsigned int tag;
222 int error;
223
224 ASSERT(blk->magic == XFS_DIR2_LEAF1_MAGIC ||
225 blk->magic == XFS_DIR2_LEAFN_MAGIC);
226
227 xfs_dir2_leaf_hdr_from_disk(mp, &hdr, blk->bp->b_addr);
228 ent = hdr.ents + blk->index;
229
230
231 error = xchk_da_btree_hash(ds, level, &ent->hashval);
232 if (error)
233 goto out;
234
235
236 ptr = be32_to_cpu(ent->address);
237 if (ptr == 0)
238 return 0;
239
240
241 db = xfs_dir2_dataptr_to_db(geo, ptr);
242 off = xfs_dir2_dataptr_to_off(geo, ptr);
243 rec_bno = xfs_dir2_db_to_da(geo, db);
244
245 if (rec_bno >= geo->leafblk) {
246 xchk_da_set_corrupt(ds, level);
247 goto out;
248 }
249 error = xfs_dir3_data_read(ds->dargs.trans, dp, rec_bno,
250 XFS_DABUF_MAP_HOLE_OK, &bp);
251 if (!xchk_fblock_process_error(ds->sc, XFS_DATA_FORK, rec_bno,
252 &error))
253 goto out;
254 if (!bp) {
255 xchk_fblock_set_corrupt(ds->sc, XFS_DATA_FORK, rec_bno);
256 goto out;
257 }
258 xchk_buffer_recheck(ds->sc, bp);
259
260 if (ds->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
261 goto out_relse;
262
263 dent = bp->b_addr + off;
264
265
266 iter_off = geo->data_entry_offset;
267 end = xfs_dir3_data_end_offset(geo, bp->b_addr);
268 if (!end) {
269 xchk_fblock_set_corrupt(ds->sc, XFS_DATA_FORK, rec_bno);
270 goto out_relse;
271 }
272 for (;;) {
273 struct xfs_dir2_data_entry *dep = bp->b_addr + iter_off;
274 struct xfs_dir2_data_unused *dup = bp->b_addr + iter_off;
275
276 if (iter_off >= end) {
277 xchk_fblock_set_corrupt(ds->sc, XFS_DATA_FORK, rec_bno);
278 goto out_relse;
279 }
280
281 if (be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG) {
282 iter_off += be16_to_cpu(dup->length);
283 continue;
284 }
285 if (dep == dent)
286 break;
287 iter_off += xfs_dir2_data_entsize(mp, dep->namelen);
288 }
289
290
291 ino = be64_to_cpu(dent->inumber);
292 hash = be32_to_cpu(ent->hashval);
293 tag = be16_to_cpup(xfs_dir2_data_entry_tag_p(mp, dent));
294 if (!xfs_verify_dir_ino(mp, ino) || tag != off)
295 xchk_fblock_set_corrupt(ds->sc, XFS_DATA_FORK, rec_bno);
296 if (dent->namelen == 0) {
297 xchk_fblock_set_corrupt(ds->sc, XFS_DATA_FORK, rec_bno);
298 goto out_relse;
299 }
300 calc_hash = xfs_da_hashname(dent->name, dent->namelen);
301 if (calc_hash != hash)
302 xchk_fblock_set_corrupt(ds->sc, XFS_DATA_FORK, rec_bno);
303
304out_relse:
305 xfs_trans_brelse(ds->dargs.trans, bp);
306out:
307 return error;
308}
309
310
311
312
313
314
315STATIC void
316xchk_directory_check_free_entry(
317 struct xfs_scrub *sc,
318 xfs_dablk_t lblk,
319 struct xfs_dir2_data_free *bf,
320 struct xfs_dir2_data_unused *dup)
321{
322 struct xfs_dir2_data_free *dfp;
323 unsigned int dup_length;
324
325 dup_length = be16_to_cpu(dup->length);
326
327
328 if (dup_length < be16_to_cpu(bf[XFS_DIR2_DATA_FD_COUNT - 1].length))
329 return;
330
331 for (dfp = &bf[XFS_DIR2_DATA_FD_COUNT - 1]; dfp >= bf; dfp--)
332 if (dup_length == be16_to_cpu(dfp->length))
333 return;
334
335
336 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
337}
338
339
340STATIC int
341xchk_directory_data_bestfree(
342 struct xfs_scrub *sc,
343 xfs_dablk_t lblk,
344 bool is_block)
345{
346 struct xfs_dir2_data_unused *dup;
347 struct xfs_dir2_data_free *dfp;
348 struct xfs_buf *bp;
349 struct xfs_dir2_data_free *bf;
350 struct xfs_mount *mp = sc->mp;
351 u16 tag;
352 unsigned int nr_bestfrees = 0;
353 unsigned int nr_frees = 0;
354 unsigned int smallest_bestfree;
355 int newlen;
356 unsigned int offset;
357 unsigned int end;
358 int error;
359
360 if (is_block) {
361
362 if (lblk != XFS_B_TO_FSBT(mp, XFS_DIR2_DATA_OFFSET))
363 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
364 error = xfs_dir3_block_read(sc->tp, sc->ip, &bp);
365 } else {
366
367 error = xfs_dir3_data_read(sc->tp, sc->ip, lblk, 0, &bp);
368 }
369 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, lblk, &error))
370 goto out;
371 xchk_buffer_recheck(sc, bp);
372
373
374
375 if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
376 goto out_buf;
377
378
379 bf = xfs_dir2_data_bestfree_p(mp, bp->b_addr);
380 smallest_bestfree = UINT_MAX;
381 for (dfp = &bf[0]; dfp < &bf[XFS_DIR2_DATA_FD_COUNT]; dfp++) {
382 offset = be16_to_cpu(dfp->offset);
383 if (offset == 0)
384 continue;
385 if (offset >= mp->m_dir_geo->blksize) {
386 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
387 goto out_buf;
388 }
389 dup = bp->b_addr + offset;
390 tag = be16_to_cpu(*xfs_dir2_data_unused_tag_p(dup));
391
392
393 if (dup->freetag != cpu_to_be16(XFS_DIR2_DATA_FREE_TAG) ||
394 be16_to_cpu(dup->length) != be16_to_cpu(dfp->length) ||
395 tag != offset) {
396 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
397 goto out_buf;
398 }
399
400
401 if (smallest_bestfree < be16_to_cpu(dfp->length)) {
402 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
403 goto out_buf;
404 }
405
406 smallest_bestfree = be16_to_cpu(dfp->length);
407 nr_bestfrees++;
408 }
409
410
411 offset = mp->m_dir_geo->data_entry_offset;
412 end = xfs_dir3_data_end_offset(mp->m_dir_geo, bp->b_addr);
413
414
415 while (offset < end) {
416 dup = bp->b_addr + offset;
417
418
419 if (dup->freetag != cpu_to_be16(XFS_DIR2_DATA_FREE_TAG)) {
420 struct xfs_dir2_data_entry *dep = bp->b_addr + offset;
421
422 newlen = xfs_dir2_data_entsize(mp, dep->namelen);
423 if (newlen <= 0) {
424 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK,
425 lblk);
426 goto out_buf;
427 }
428 offset += newlen;
429 continue;
430 }
431
432
433 tag = be16_to_cpu(*xfs_dir2_data_unused_tag_p(dup));
434 if (tag != offset) {
435 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
436 goto out_buf;
437 }
438
439
440
441
442
443 xchk_directory_check_free_entry(sc, lblk, bf, dup);
444 if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
445 goto out_buf;
446
447
448 newlen = be16_to_cpu(dup->length);
449 if (newlen <= 0) {
450 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
451 goto out_buf;
452 }
453 offset += newlen;
454 if (offset <= end)
455 nr_frees++;
456 }
457
458
459 if (offset != end)
460 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
461
462
463 if (nr_frees < nr_bestfrees)
464 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
465out_buf:
466 xfs_trans_brelse(sc->tp, bp);
467out:
468 return error;
469}
470
471
472
473
474
475
476
477STATIC void
478xchk_directory_check_freesp(
479 struct xfs_scrub *sc,
480 xfs_dablk_t lblk,
481 struct xfs_buf *dbp,
482 unsigned int len)
483{
484 struct xfs_dir2_data_free *dfp;
485
486 dfp = xfs_dir2_data_bestfree_p(sc->mp, dbp->b_addr);
487
488 if (len != be16_to_cpu(dfp->length))
489 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
490
491 if (len > 0 && be16_to_cpu(dfp->offset) == 0)
492 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
493}
494
495
496STATIC int
497xchk_directory_leaf1_bestfree(
498 struct xfs_scrub *sc,
499 struct xfs_da_args *args,
500 xfs_dir2_db_t last_data_db,
501 xfs_dablk_t lblk)
502{
503 struct xfs_dir3_icleaf_hdr leafhdr;
504 struct xfs_dir2_leaf_tail *ltp;
505 struct xfs_dir2_leaf *leaf;
506 struct xfs_buf *dbp;
507 struct xfs_buf *bp;
508 struct xfs_da_geometry *geo = sc->mp->m_dir_geo;
509 __be16 *bestp;
510 __u16 best;
511 __u32 hash;
512 __u32 lasthash = 0;
513 __u32 bestcount;
514 unsigned int stale = 0;
515 int i;
516 int error;
517
518
519 error = xfs_dir3_leaf_read(sc->tp, sc->ip, lblk, &bp);
520 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, lblk, &error))
521 return error;
522 xchk_buffer_recheck(sc, bp);
523
524 leaf = bp->b_addr;
525 xfs_dir2_leaf_hdr_from_disk(sc->ip->i_mount, &leafhdr, leaf);
526 ltp = xfs_dir2_leaf_tail_p(geo, leaf);
527 bestcount = be32_to_cpu(ltp->bestcount);
528 bestp = xfs_dir2_leaf_bests_p(ltp);
529
530 if (xfs_has_crc(sc->mp)) {
531 struct xfs_dir3_leaf_hdr *hdr3 = bp->b_addr;
532
533 if (hdr3->pad != cpu_to_be32(0))
534 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
535 }
536
537
538
539
540
541
542
543
544
545 if (bestcount != last_data_db + 1) {
546 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
547 goto out;
548 }
549
550
551 if (leafhdr.count > geo->leaf_max_ents) {
552 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
553 goto out;
554 }
555
556
557 if ((char *)&leafhdr.ents[leafhdr.count] > (char *)bestp) {
558 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
559 goto out;
560 }
561
562
563 for (i = 0; i < leafhdr.count; i++) {
564 hash = be32_to_cpu(leafhdr.ents[i].hashval);
565 if (i > 0 && lasthash > hash)
566 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
567 lasthash = hash;
568 if (leafhdr.ents[i].address ==
569 cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
570 stale++;
571 }
572 if (leafhdr.stale != stale)
573 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
574 if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
575 goto out;
576
577
578 for (i = 0; i < bestcount; i++, bestp++) {
579 best = be16_to_cpu(*bestp);
580 error = xfs_dir3_data_read(sc->tp, sc->ip,
581 xfs_dir2_db_to_da(args->geo, i),
582 XFS_DABUF_MAP_HOLE_OK,
583 &dbp);
584 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, lblk,
585 &error))
586 break;
587
588 if (!dbp) {
589 if (best != NULLDATAOFF) {
590 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK,
591 lblk);
592 break;
593 }
594 continue;
595 }
596
597 if (best == NULLDATAOFF)
598 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
599 else
600 xchk_directory_check_freesp(sc, lblk, dbp, best);
601 xfs_trans_brelse(sc->tp, dbp);
602 if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
603 break;
604 }
605out:
606 xfs_trans_brelse(sc->tp, bp);
607 return error;
608}
609
610
611STATIC int
612xchk_directory_free_bestfree(
613 struct xfs_scrub *sc,
614 struct xfs_da_args *args,
615 xfs_dablk_t lblk)
616{
617 struct xfs_dir3_icfree_hdr freehdr;
618 struct xfs_buf *dbp;
619 struct xfs_buf *bp;
620 __u16 best;
621 unsigned int stale = 0;
622 int i;
623 int error;
624
625
626 error = xfs_dir2_free_read(sc->tp, sc->ip, lblk, &bp);
627 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, lblk, &error))
628 return error;
629 xchk_buffer_recheck(sc, bp);
630
631 if (xfs_has_crc(sc->mp)) {
632 struct xfs_dir3_free_hdr *hdr3 = bp->b_addr;
633
634 if (hdr3->pad != cpu_to_be32(0))
635 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
636 }
637
638
639 xfs_dir2_free_hdr_from_disk(sc->ip->i_mount, &freehdr, bp->b_addr);
640 for (i = 0; i < freehdr.nvalid; i++) {
641 best = be16_to_cpu(freehdr.bests[i]);
642 if (best == NULLDATAOFF) {
643 stale++;
644 continue;
645 }
646 error = xfs_dir3_data_read(sc->tp, sc->ip,
647 (freehdr.firstdb + i) * args->geo->fsbcount,
648 0, &dbp);
649 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, lblk,
650 &error))
651 goto out;
652 xchk_directory_check_freesp(sc, lblk, dbp, best);
653 xfs_trans_brelse(sc->tp, dbp);
654 }
655
656 if (freehdr.nused + stale != freehdr.nvalid)
657 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
658out:
659 xfs_trans_brelse(sc->tp, bp);
660 return error;
661}
662
663
664STATIC int
665xchk_directory_blocks(
666 struct xfs_scrub *sc)
667{
668 struct xfs_bmbt_irec got;
669 struct xfs_da_args args;
670 struct xfs_ifork *ifp = XFS_IFORK_PTR(sc->ip, XFS_DATA_FORK);
671 struct xfs_mount *mp = sc->mp;
672 xfs_fileoff_t leaf_lblk;
673 xfs_fileoff_t free_lblk;
674 xfs_fileoff_t lblk;
675 struct xfs_iext_cursor icur;
676 xfs_dablk_t dabno;
677 xfs_dir2_db_t last_data_db = 0;
678 bool found;
679 int is_block = 0;
680 int error;
681
682
683 if (ifp->if_format != XFS_DINODE_FMT_EXTENTS &&
684 ifp->if_format != XFS_DINODE_FMT_BTREE)
685 return 0;
686
687 lblk = XFS_B_TO_FSB(mp, XFS_DIR2_DATA_OFFSET);
688 leaf_lblk = XFS_B_TO_FSB(mp, XFS_DIR2_LEAF_OFFSET);
689 free_lblk = XFS_B_TO_FSB(mp, XFS_DIR2_FREE_OFFSET);
690
691
692 args.dp = sc->ip;
693 args.geo = mp->m_dir_geo;
694 args.trans = sc->tp;
695 error = xfs_dir2_isblock(&args, &is_block);
696 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, lblk, &error))
697 goto out;
698
699
700 found = xfs_iext_lookup_extent(sc->ip, ifp, lblk, &icur, &got);
701 while (found && !(sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)) {
702
703 if (got.br_startoff >= leaf_lblk)
704 break;
705
706
707
708
709
710
711
712
713
714
715
716
717 for (lblk = roundup((xfs_dablk_t)got.br_startoff,
718 args.geo->fsbcount);
719 lblk < got.br_startoff + got.br_blockcount;
720 lblk += args.geo->fsbcount) {
721 last_data_db = xfs_dir2_da_to_db(args.geo, lblk);
722 error = xchk_directory_data_bestfree(sc, lblk,
723 is_block);
724 if (error)
725 goto out;
726 }
727 dabno = got.br_startoff + got.br_blockcount;
728 lblk = roundup(dabno, args.geo->fsbcount);
729 found = xfs_iext_lookup_extent(sc->ip, ifp, lblk, &icur, &got);
730 }
731
732 if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
733 goto out;
734
735
736 if (xfs_iext_lookup_extent(sc->ip, ifp, leaf_lblk, &icur, &got) &&
737 got.br_startoff == leaf_lblk &&
738 got.br_blockcount == args.geo->fsbcount &&
739 !xfs_iext_next_extent(ifp, &icur, &got)) {
740 if (is_block) {
741 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
742 goto out;
743 }
744 error = xchk_directory_leaf1_bestfree(sc, &args, last_data_db,
745 leaf_lblk);
746 if (error)
747 goto out;
748 }
749
750 if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
751 goto out;
752
753
754 lblk = free_lblk;
755 found = xfs_iext_lookup_extent(sc->ip, ifp, lblk, &icur, &got);
756 while (found && !(sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)) {
757
758
759
760
761 lblk = got.br_startoff;
762 if (lblk & ~0xFFFFFFFFULL) {
763 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
764 goto out;
765 }
766 if (is_block) {
767 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
768 goto out;
769 }
770
771
772
773
774
775
776
777
778
779
780
781
782 for (lblk = roundup((xfs_dablk_t)got.br_startoff,
783 args.geo->fsbcount);
784 lblk < got.br_startoff + got.br_blockcount;
785 lblk += args.geo->fsbcount) {
786 error = xchk_directory_free_bestfree(sc, &args,
787 lblk);
788 if (error)
789 goto out;
790 }
791 dabno = got.br_startoff + got.br_blockcount;
792 lblk = roundup(dabno, args.geo->fsbcount);
793 found = xfs_iext_lookup_extent(sc->ip, ifp, lblk, &icur, &got);
794 }
795out:
796 return error;
797}
798
799
800int
801xchk_directory(
802 struct xfs_scrub *sc)
803{
804 struct xchk_dir_ctx sdc = {
805 .dir_iter.actor = xchk_dir_actor,
806 .dir_iter.pos = 0,
807 .sc = sc,
808 };
809 size_t bufsize;
810 loff_t oldpos;
811 int error = 0;
812
813 if (!S_ISDIR(VFS_I(sc->ip)->i_mode))
814 return -ENOENT;
815
816
817 if (sc->ip->i_disk_size < xfs_dir2_sf_hdr_size(0)) {
818 xchk_ino_set_corrupt(sc, sc->ip->i_ino);
819 goto out;
820 }
821
822
823 error = xchk_da_btree(sc, XFS_DATA_FORK, xchk_dir_rec, NULL);
824 if (error)
825 return error;
826
827 if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
828 return error;
829
830
831 error = xchk_directory_blocks(sc);
832 if (error)
833 return error;
834
835 if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
836 return error;
837
838
839
840
841
842 bufsize = (size_t)min_t(loff_t, XFS_READDIR_BUFSIZE,
843 sc->ip->i_disk_size);
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861 oldpos = 0;
862 sc->ilock_flags &= ~XFS_ILOCK_EXCL;
863 xfs_iunlock(sc->ip, XFS_ILOCK_EXCL);
864 while (true) {
865 error = xfs_readdir(sc->tp, sc->ip, &sdc.dir_iter, bufsize);
866 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, 0,
867 &error))
868 goto out;
869 if (oldpos == sdc.dir_iter.pos)
870 break;
871 oldpos = sdc.dir_iter.pos;
872 }
873
874out:
875 return error;
876}
877