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18#include "xfs.h"
19#include "xfs_fs.h"
20#include "xfs_types.h"
21#include "xfs_log.h"
22#include "xfs_inum.h"
23#include "xfs_trans.h"
24#include "xfs_sb.h"
25#include "xfs_ag.h"
26#include "xfs_mount.h"
27#include "xfs_bmap_btree.h"
28#include "xfs_alloc_btree.h"
29#include "xfs_ialloc_btree.h"
30#include "xfs_dinode.h"
31#include "xfs_inode.h"
32#include "xfs_ialloc.h"
33#include "xfs_itable.h"
34#include "xfs_error.h"
35#include "xfs_btree.h"
36#include "xfs_trace.h"
37#include "xfs_icache.h"
38
39STATIC int
40xfs_internal_inum(
41 xfs_mount_t *mp,
42 xfs_ino_t ino)
43{
44 return (ino == mp->m_sb.sb_rbmino || ino == mp->m_sb.sb_rsumino ||
45 (xfs_sb_version_hasquota(&mp->m_sb) &&
46 (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino)));
47}
48
49
50
51
52
53int
54xfs_bulkstat_one_int(
55 struct xfs_mount *mp,
56 xfs_ino_t ino,
57 void __user *buffer,
58 int ubsize,
59 bulkstat_one_fmt_pf formatter,
60 int *ubused,
61 int *stat)
62{
63 struct xfs_icdinode *dic;
64 struct xfs_inode *ip;
65 struct xfs_bstat *buf;
66 int error = 0;
67
68 *stat = BULKSTAT_RV_NOTHING;
69
70 if (!buffer || xfs_internal_inum(mp, ino))
71 return XFS_ERROR(EINVAL);
72
73 buf = kmem_alloc(sizeof(*buf), KM_SLEEP | KM_MAYFAIL);
74 if (!buf)
75 return XFS_ERROR(ENOMEM);
76
77 error = xfs_iget(mp, NULL, ino,
78 (XFS_IGET_DONTCACHE | XFS_IGET_UNTRUSTED),
79 XFS_ILOCK_SHARED, &ip);
80 if (error) {
81 *stat = BULKSTAT_RV_NOTHING;
82 goto out_free;
83 }
84
85 ASSERT(ip != NULL);
86 ASSERT(ip->i_imap.im_blkno != 0);
87
88 dic = &ip->i_d;
89
90
91
92
93 buf->bs_nlink = dic->di_nlink;
94 buf->bs_projid_lo = dic->di_projid_lo;
95 buf->bs_projid_hi = dic->di_projid_hi;
96 buf->bs_ino = ino;
97 buf->bs_mode = dic->di_mode;
98 buf->bs_uid = dic->di_uid;
99 buf->bs_gid = dic->di_gid;
100 buf->bs_size = dic->di_size;
101 buf->bs_atime.tv_sec = dic->di_atime.t_sec;
102 buf->bs_atime.tv_nsec = dic->di_atime.t_nsec;
103 buf->bs_mtime.tv_sec = dic->di_mtime.t_sec;
104 buf->bs_mtime.tv_nsec = dic->di_mtime.t_nsec;
105 buf->bs_ctime.tv_sec = dic->di_ctime.t_sec;
106 buf->bs_ctime.tv_nsec = dic->di_ctime.t_nsec;
107 buf->bs_xflags = xfs_ip2xflags(ip);
108 buf->bs_extsize = dic->di_extsize << mp->m_sb.sb_blocklog;
109 buf->bs_extents = dic->di_nextents;
110 buf->bs_gen = dic->di_gen;
111 memset(buf->bs_pad, 0, sizeof(buf->bs_pad));
112 buf->bs_dmevmask = dic->di_dmevmask;
113 buf->bs_dmstate = dic->di_dmstate;
114 buf->bs_aextents = dic->di_anextents;
115 buf->bs_forkoff = XFS_IFORK_BOFF(ip);
116
117 switch (dic->di_format) {
118 case XFS_DINODE_FMT_DEV:
119 buf->bs_rdev = ip->i_df.if_u2.if_rdev;
120 buf->bs_blksize = BLKDEV_IOSIZE;
121 buf->bs_blocks = 0;
122 break;
123 case XFS_DINODE_FMT_LOCAL:
124 case XFS_DINODE_FMT_UUID:
125 buf->bs_rdev = 0;
126 buf->bs_blksize = mp->m_sb.sb_blocksize;
127 buf->bs_blocks = 0;
128 break;
129 case XFS_DINODE_FMT_EXTENTS:
130 case XFS_DINODE_FMT_BTREE:
131 buf->bs_rdev = 0;
132 buf->bs_blksize = mp->m_sb.sb_blocksize;
133 buf->bs_blocks = dic->di_nblocks + ip->i_delayed_blks;
134 break;
135 }
136 xfs_iunlock(ip, XFS_ILOCK_SHARED);
137 IRELE(ip);
138
139 error = formatter(buffer, ubsize, ubused, buf);
140
141 if (!error)
142 *stat = BULKSTAT_RV_DIDONE;
143
144 out_free:
145 kmem_free(buf);
146 return error;
147}
148
149
150STATIC int
151xfs_bulkstat_one_fmt(
152 void __user *ubuffer,
153 int ubsize,
154 int *ubused,
155 const xfs_bstat_t *buffer)
156{
157 if (ubsize < sizeof(*buffer))
158 return XFS_ERROR(ENOMEM);
159 if (copy_to_user(ubuffer, buffer, sizeof(*buffer)))
160 return XFS_ERROR(EFAULT);
161 if (ubused)
162 *ubused = sizeof(*buffer);
163 return 0;
164}
165
166int
167xfs_bulkstat_one(
168 xfs_mount_t *mp,
169 xfs_ino_t ino,
170 void __user *buffer,
171 int ubsize,
172 int *ubused,
173 int *stat)
174{
175 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
176 xfs_bulkstat_one_fmt, ubused, stat);
177}
178
179#define XFS_BULKSTAT_UBLEFT(ubleft) ((ubleft) >= statstruct_size)
180
181
182
183
184int
185xfs_bulkstat(
186 xfs_mount_t *mp,
187 xfs_ino_t *lastinop,
188 int *ubcountp,
189 bulkstat_one_pf formatter,
190 size_t statstruct_size,
191 char __user *ubuffer,
192 int *done)
193{
194 xfs_agblock_t agbno=0;
195 xfs_buf_t *agbp;
196 xfs_agi_t *agi;
197 xfs_agino_t agino;
198 xfs_agnumber_t agno;
199 int chunkidx;
200 int clustidx;
201 xfs_btree_cur_t *cur;
202 int end_of_ag;
203 int error;
204 int fmterror;
205 int i;
206 int icount;
207 size_t irbsize;
208 xfs_ino_t ino;
209 xfs_inobt_rec_incore_t *irbp;
210 xfs_inobt_rec_incore_t *irbuf;
211 xfs_inobt_rec_incore_t *irbufend;
212 xfs_ino_t lastino;
213 int nbcluster;
214 int nicluster;
215 int nimask;
216 int nirbuf;
217 int rval;
218 int tmp;
219 int ubcount;
220 int ubleft;
221 char __user *ubufp;
222 int ubelem;
223 int ubused;
224 xfs_buf_t *bp;
225
226
227
228
229 ino = (xfs_ino_t)*lastinop;
230 lastino = ino;
231 agno = XFS_INO_TO_AGNO(mp, ino);
232 agino = XFS_INO_TO_AGINO(mp, ino);
233 if (agno >= mp->m_sb.sb_agcount ||
234 ino != XFS_AGINO_TO_INO(mp, agno, agino)) {
235 *done = 1;
236 *ubcountp = 0;
237 return 0;
238 }
239 if (!ubcountp || *ubcountp <= 0) {
240 return EINVAL;
241 }
242 ubcount = *ubcountp;
243 ubleft = ubcount * statstruct_size;
244 *ubcountp = ubelem = 0;
245 *done = 0;
246 fmterror = 0;
247 ubufp = ubuffer;
248 nicluster = mp->m_sb.sb_blocksize >= XFS_INODE_CLUSTER_SIZE(mp) ?
249 mp->m_sb.sb_inopblock :
250 (XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog);
251 nimask = ~(nicluster - 1);
252 nbcluster = nicluster >> mp->m_sb.sb_inopblog;
253 irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4);
254 if (!irbuf)
255 return ENOMEM;
256
257 nirbuf = irbsize / sizeof(*irbuf);
258
259
260
261
262
263 rval = 0;
264 while (XFS_BULKSTAT_UBLEFT(ubleft) && agno < mp->m_sb.sb_agcount) {
265 cond_resched();
266 bp = NULL;
267 error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
268 if (error) {
269
270
271
272 agno++;
273 agino = 0;
274 continue;
275 }
276 agi = XFS_BUF_TO_AGI(agbp);
277
278
279
280 cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
281 irbp = irbuf;
282 irbufend = irbuf + nirbuf;
283 end_of_ag = 0;
284
285
286
287
288 if (agino > 0) {
289 xfs_inobt_rec_incore_t r;
290
291
292
293
294 error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_LE,
295 &tmp);
296 if (!error &&
297 tmp &&
298
299 !(error = xfs_inobt_get_rec(cur, &r, &i)) &&
300 i == 1 &&
301
302 agino < r.ir_startino + XFS_INODES_PER_CHUNK &&
303
304 (chunkidx = agino - r.ir_startino + 1) <
305 XFS_INODES_PER_CHUNK &&
306
307 xfs_inobt_maskn(chunkidx,
308 XFS_INODES_PER_CHUNK - chunkidx) &
309 ~r.ir_free) {
310
311
312
313
314
315 for (i = 0; i < chunkidx; i++) {
316 if (XFS_INOBT_MASK(i) & ~r.ir_free)
317 r.ir_freecount++;
318 }
319 r.ir_free |= xfs_inobt_maskn(0, chunkidx);
320 irbp->ir_startino = r.ir_startino;
321 irbp->ir_freecount = r.ir_freecount;
322 irbp->ir_free = r.ir_free;
323 irbp++;
324 agino = r.ir_startino + XFS_INODES_PER_CHUNK;
325 icount = XFS_INODES_PER_CHUNK - r.ir_freecount;
326 } else {
327
328
329
330
331 agino++;
332 icount = 0;
333 }
334
335
336
337 if (!error)
338 error = xfs_btree_increment(cur, 0, &tmp);
339 } else {
340
341
342
343 error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &tmp);
344 icount = 0;
345 }
346
347
348
349
350 while (irbp < irbufend && icount < ubcount) {
351 xfs_inobt_rec_incore_t r;
352
353
354
355
356
357 while (error) {
358 agino += XFS_INODES_PER_CHUNK;
359 if (XFS_AGINO_TO_AGBNO(mp, agino) >=
360 be32_to_cpu(agi->agi_length))
361 break;
362 error = xfs_inobt_lookup(cur, agino,
363 XFS_LOOKUP_GE, &tmp);
364 cond_resched();
365 }
366
367
368
369
370 if (error) {
371 end_of_ag = 1;
372 break;
373 }
374
375 error = xfs_inobt_get_rec(cur, &r, &i);
376 if (error || i == 0) {
377 end_of_ag = 1;
378 break;
379 }
380
381
382
383
384
385 if (r.ir_freecount < XFS_INODES_PER_CHUNK) {
386
387
388
389
390
391 agbno = XFS_AGINO_TO_AGBNO(mp, r.ir_startino);
392 for (chunkidx = 0;
393 chunkidx < XFS_INODES_PER_CHUNK;
394 chunkidx += nicluster,
395 agbno += nbcluster) {
396 if (xfs_inobt_maskn(chunkidx, nicluster)
397 & ~r.ir_free)
398 xfs_btree_reada_bufs(mp, agno,
399 agbno, nbcluster,
400 &xfs_inode_buf_ops);
401 }
402 irbp->ir_startino = r.ir_startino;
403 irbp->ir_freecount = r.ir_freecount;
404 irbp->ir_free = r.ir_free;
405 irbp++;
406 icount += XFS_INODES_PER_CHUNK - r.ir_freecount;
407 }
408
409
410
411 agino = r.ir_startino + XFS_INODES_PER_CHUNK;
412 error = xfs_btree_increment(cur, 0, &tmp);
413 cond_resched();
414 }
415
416
417
418
419
420 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
421 xfs_buf_relse(agbp);
422
423
424
425 irbufend = irbp;
426 for (irbp = irbuf;
427 irbp < irbufend && XFS_BULKSTAT_UBLEFT(ubleft); irbp++) {
428
429
430
431 for (agino = irbp->ir_startino, chunkidx = clustidx = 0;
432 XFS_BULKSTAT_UBLEFT(ubleft) &&
433 irbp->ir_freecount < XFS_INODES_PER_CHUNK;
434 chunkidx++, clustidx++, agino++) {
435 ASSERT(chunkidx < XFS_INODES_PER_CHUNK);
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451 if ((chunkidx & (nicluster - 1)) == 0) {
452 agbno = XFS_AGINO_TO_AGBNO(mp,
453 irbp->ir_startino) +
454 ((chunkidx & nimask) >>
455 mp->m_sb.sb_inopblog);
456 }
457 ino = XFS_AGINO_TO_INO(mp, agno, agino);
458
459
460
461 if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free) {
462 lastino = ino;
463 continue;
464 }
465
466
467
468
469 irbp->ir_freecount++;
470
471
472
473
474 ubused = statstruct_size;
475 error = formatter(mp, ino, ubufp, ubleft,
476 &ubused, &fmterror);
477 if (fmterror == BULKSTAT_RV_NOTHING) {
478 if (error && error != ENOENT &&
479 error != EINVAL) {
480 ubleft = 0;
481 rval = error;
482 break;
483 }
484 lastino = ino;
485 continue;
486 }
487 if (fmterror == BULKSTAT_RV_GIVEUP) {
488 ubleft = 0;
489 ASSERT(error);
490 rval = error;
491 break;
492 }
493 if (ubufp)
494 ubufp += ubused;
495 ubleft -= ubused;
496 ubelem++;
497 lastino = ino;
498 }
499
500 cond_resched();
501 }
502
503 if (bp)
504 xfs_buf_relse(bp);
505
506
507
508
509 if (XFS_BULKSTAT_UBLEFT(ubleft)) {
510 if (end_of_ag) {
511 agno++;
512 agino = 0;
513 } else
514 agino = XFS_INO_TO_AGINO(mp, lastino);
515 } else
516 break;
517 }
518
519
520
521 kmem_free_large(irbuf);
522 *ubcountp = ubelem;
523
524
525
526 if (ubelem)
527 rval = 0;
528 if (agno >= mp->m_sb.sb_agcount) {
529
530
531
532
533
534 *lastinop = (xfs_ino_t)XFS_AGINO_TO_INO(mp, agno, 0);
535 *done = 1;
536 } else
537 *lastinop = (xfs_ino_t)lastino;
538
539 return rval;
540}
541
542
543
544
545
546int
547xfs_bulkstat_single(
548 xfs_mount_t *mp,
549 xfs_ino_t *lastinop,
550 char __user *buffer,
551 int *done)
552{
553 int count;
554 int error;
555 xfs_ino_t ino;
556 int res;
557
558
559
560
561
562
563
564
565
566
567 ino = (xfs_ino_t)*lastinop;
568 error = xfs_bulkstat_one(mp, ino, buffer, sizeof(xfs_bstat_t), 0, &res);
569 if (error) {
570
571
572
573
574 (*lastinop)--;
575 count = 1;
576 if (xfs_bulkstat(mp, lastinop, &count, xfs_bulkstat_one,
577 sizeof(xfs_bstat_t), buffer, done))
578 return error;
579 if (count == 0 || (xfs_ino_t)*lastinop != ino)
580 return error == EFSCORRUPTED ?
581 XFS_ERROR(EINVAL) : error;
582 else
583 return 0;
584 }
585 *done = 0;
586 return 0;
587}
588
589int
590xfs_inumbers_fmt(
591 void __user *ubuffer,
592 const xfs_inogrp_t *buffer,
593 long count,
594 long *written)
595{
596 if (copy_to_user(ubuffer, buffer, count * sizeof(*buffer)))
597 return -EFAULT;
598 *written = count * sizeof(*buffer);
599 return 0;
600}
601
602
603
604
605int
606xfs_inumbers(
607 xfs_mount_t *mp,
608 xfs_ino_t *lastino,
609 int *count,
610 void __user *ubuffer,
611 inumbers_fmt_pf formatter)
612{
613 xfs_buf_t *agbp;
614 xfs_agino_t agino;
615 xfs_agnumber_t agno;
616 int bcount;
617 xfs_inogrp_t *buffer;
618 int bufidx;
619 xfs_btree_cur_t *cur;
620 int error;
621 xfs_inobt_rec_incore_t r;
622 int i;
623 xfs_ino_t ino;
624 int left;
625 int tmp;
626
627 ino = (xfs_ino_t)*lastino;
628 agno = XFS_INO_TO_AGNO(mp, ino);
629 agino = XFS_INO_TO_AGINO(mp, ino);
630 left = *count;
631 *count = 0;
632 bcount = MIN(left, (int)(PAGE_SIZE / sizeof(*buffer)));
633 buffer = kmem_alloc(bcount * sizeof(*buffer), KM_SLEEP);
634 error = bufidx = 0;
635 cur = NULL;
636 agbp = NULL;
637 while (left > 0 && agno < mp->m_sb.sb_agcount) {
638 if (agbp == NULL) {
639 error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
640 if (error) {
641
642
643
644
645 ASSERT(cur == NULL);
646 agbp = NULL;
647 agno++;
648 agino = 0;
649 continue;
650 }
651 cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
652 error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_GE,
653 &tmp);
654 if (error) {
655 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
656 cur = NULL;
657 xfs_buf_relse(agbp);
658 agbp = NULL;
659
660
661
662
663
664 agino += XFS_INODES_PER_CHUNK - 1;
665 continue;
666 }
667 }
668 error = xfs_inobt_get_rec(cur, &r, &i);
669 if (error || i == 0) {
670 xfs_buf_relse(agbp);
671 agbp = NULL;
672 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
673 cur = NULL;
674 agno++;
675 agino = 0;
676 continue;
677 }
678 agino = r.ir_startino + XFS_INODES_PER_CHUNK - 1;
679 buffer[bufidx].xi_startino =
680 XFS_AGINO_TO_INO(mp, agno, r.ir_startino);
681 buffer[bufidx].xi_alloccount =
682 XFS_INODES_PER_CHUNK - r.ir_freecount;
683 buffer[bufidx].xi_allocmask = ~r.ir_free;
684 bufidx++;
685 left--;
686 if (bufidx == bcount) {
687 long written;
688 if (formatter(ubuffer, buffer, bufidx, &written)) {
689 error = XFS_ERROR(EFAULT);
690 break;
691 }
692 ubuffer += written;
693 *count += bufidx;
694 bufidx = 0;
695 }
696 if (left) {
697 error = xfs_btree_increment(cur, 0, &tmp);
698 if (error) {
699 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
700 cur = NULL;
701 xfs_buf_relse(agbp);
702 agbp = NULL;
703
704
705
706
707 agino += XFS_INODES_PER_CHUNK;
708 continue;
709 }
710 }
711 }
712 if (!error) {
713 if (bufidx) {
714 long written;
715 if (formatter(ubuffer, buffer, bufidx, &written))
716 error = XFS_ERROR(EFAULT);
717 else
718 *count += bufidx;
719 }
720 *lastino = XFS_AGINO_TO_INO(mp, agno, agino);
721 }
722 kmem_free(buffer);
723 if (cur)
724 xfs_btree_del_cursor(cur, (error ? XFS_BTREE_ERROR :
725 XFS_BTREE_NOERROR));
726 if (agbp)
727 xfs_buf_relse(agbp);
728 return error;
729}
730