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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 xfs_is_quota_inode(&mp->m_sb, ino)));
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
225
226
227
228 ino = (xfs_ino_t)*lastinop;
229 lastino = ino;
230 agno = XFS_INO_TO_AGNO(mp, ino);
231 agino = XFS_INO_TO_AGINO(mp, ino);
232 if (agno >= mp->m_sb.sb_agcount ||
233 ino != XFS_AGINO_TO_INO(mp, agno, agino)) {
234 *done = 1;
235 *ubcountp = 0;
236 return 0;
237 }
238 if (!ubcountp || *ubcountp <= 0) {
239 return EINVAL;
240 }
241 ubcount = *ubcountp;
242 ubleft = ubcount * statstruct_size;
243 *ubcountp = ubelem = 0;
244 *done = 0;
245 fmterror = 0;
246 ubufp = ubuffer;
247 nicluster = mp->m_sb.sb_blocksize >= XFS_INODE_CLUSTER_SIZE(mp) ?
248 mp->m_sb.sb_inopblock :
249 (XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog);
250 nimask = ~(nicluster - 1);
251 nbcluster = nicluster >> mp->m_sb.sb_inopblog;
252 irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4);
253 if (!irbuf)
254 return ENOMEM;
255
256 nirbuf = irbsize / sizeof(*irbuf);
257
258
259
260
261
262 rval = 0;
263 while (XFS_BULKSTAT_UBLEFT(ubleft) && agno < mp->m_sb.sb_agcount) {
264 cond_resched();
265 error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
266 if (error) {
267
268
269
270 agno++;
271 agino = 0;
272 continue;
273 }
274 agi = XFS_BUF_TO_AGI(agbp);
275
276
277
278 cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
279 irbp = irbuf;
280 irbufend = irbuf + nirbuf;
281 end_of_ag = 0;
282
283
284
285
286 if (agino > 0) {
287 xfs_inobt_rec_incore_t r;
288
289
290
291
292 error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_LE,
293 &tmp);
294 if (!error &&
295 tmp &&
296
297 !(error = xfs_inobt_get_rec(cur, &r, &i)) &&
298 i == 1 &&
299
300 agino < r.ir_startino + XFS_INODES_PER_CHUNK &&
301
302 (chunkidx = agino - r.ir_startino + 1) <
303 XFS_INODES_PER_CHUNK &&
304
305 xfs_inobt_maskn(chunkidx,
306 XFS_INODES_PER_CHUNK - chunkidx) &
307 ~r.ir_free) {
308
309
310
311
312
313 for (i = 0; i < chunkidx; i++) {
314 if (XFS_INOBT_MASK(i) & ~r.ir_free)
315 r.ir_freecount++;
316 }
317 r.ir_free |= xfs_inobt_maskn(0, chunkidx);
318 irbp->ir_startino = r.ir_startino;
319 irbp->ir_freecount = r.ir_freecount;
320 irbp->ir_free = r.ir_free;
321 irbp++;
322 agino = r.ir_startino + XFS_INODES_PER_CHUNK;
323 icount = XFS_INODES_PER_CHUNK - r.ir_freecount;
324 } else {
325
326
327
328
329 agino++;
330 icount = 0;
331 }
332
333
334
335 if (!error)
336 error = xfs_btree_increment(cur, 0, &tmp);
337 } else {
338
339
340
341 error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &tmp);
342 icount = 0;
343 }
344
345
346
347
348 while (irbp < irbufend && icount < ubcount) {
349 xfs_inobt_rec_incore_t r;
350
351
352
353
354
355 while (error) {
356 agino += XFS_INODES_PER_CHUNK;
357 if (XFS_AGINO_TO_AGBNO(mp, agino) >=
358 be32_to_cpu(agi->agi_length))
359 break;
360 error = xfs_inobt_lookup(cur, agino,
361 XFS_LOOKUP_GE, &tmp);
362 cond_resched();
363 }
364
365
366
367
368 if (error) {
369 end_of_ag = 1;
370 break;
371 }
372
373 error = xfs_inobt_get_rec(cur, &r, &i);
374 if (error || i == 0) {
375 end_of_ag = 1;
376 break;
377 }
378
379
380
381
382
383 if (r.ir_freecount < XFS_INODES_PER_CHUNK) {
384 struct blk_plug plug;
385
386
387
388
389
390 blk_start_plug(&plug);
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 blk_finish_plug(&plug);
403 irbp->ir_startino = r.ir_startino;
404 irbp->ir_freecount = r.ir_freecount;
405 irbp->ir_free = r.ir_free;
406 irbp++;
407 icount += XFS_INODES_PER_CHUNK - r.ir_freecount;
408 }
409
410
411
412 agino = r.ir_startino + XFS_INODES_PER_CHUNK;
413 error = xfs_btree_increment(cur, 0, &tmp);
414 cond_resched();
415 }
416
417
418
419
420
421 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
422 xfs_buf_relse(agbp);
423
424
425
426 irbufend = irbp;
427 for (irbp = irbuf;
428 irbp < irbufend && XFS_BULKSTAT_UBLEFT(ubleft); irbp++) {
429
430
431
432 for (agino = irbp->ir_startino, chunkidx = clustidx = 0;
433 XFS_BULKSTAT_UBLEFT(ubleft) &&
434 irbp->ir_freecount < XFS_INODES_PER_CHUNK;
435 chunkidx++, clustidx++, agino++) {
436 ASSERT(chunkidx < XFS_INODES_PER_CHUNK);
437
438 ino = XFS_AGINO_TO_INO(mp, agno, agino);
439
440
441
442 if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free) {
443 lastino = ino;
444 continue;
445 }
446
447
448
449
450 irbp->ir_freecount++;
451
452
453
454
455 ubused = statstruct_size;
456 error = formatter(mp, ino, ubufp, ubleft,
457 &ubused, &fmterror);
458 if (fmterror == BULKSTAT_RV_NOTHING) {
459 if (error && error != ENOENT &&
460 error != EINVAL) {
461 ubleft = 0;
462 rval = error;
463 break;
464 }
465 lastino = ino;
466 continue;
467 }
468 if (fmterror == BULKSTAT_RV_GIVEUP) {
469 ubleft = 0;
470 ASSERT(error);
471 rval = error;
472 break;
473 }
474 if (ubufp)
475 ubufp += ubused;
476 ubleft -= ubused;
477 ubelem++;
478 lastino = ino;
479 }
480
481 cond_resched();
482 }
483
484
485
486 if (XFS_BULKSTAT_UBLEFT(ubleft)) {
487 if (end_of_ag) {
488 agno++;
489 agino = 0;
490 } else
491 agino = XFS_INO_TO_AGINO(mp, lastino);
492 } else
493 break;
494 }
495
496
497
498 kmem_free(irbuf);
499 *ubcountp = ubelem;
500
501
502
503 if (ubelem)
504 rval = 0;
505 if (agno >= mp->m_sb.sb_agcount) {
506
507
508
509
510
511 *lastinop = (xfs_ino_t)XFS_AGINO_TO_INO(mp, agno, 0);
512 *done = 1;
513 } else
514 *lastinop = (xfs_ino_t)lastino;
515
516 return rval;
517}
518
519
520
521
522
523int
524xfs_bulkstat_single(
525 xfs_mount_t *mp,
526 xfs_ino_t *lastinop,
527 char __user *buffer,
528 int *done)
529{
530 int count;
531 int error;
532 xfs_ino_t ino;
533 int res;
534
535
536
537
538
539
540
541
542
543
544 ino = *lastinop;
545 error = xfs_bulkstat_one(mp, ino, buffer, sizeof(xfs_bstat_t),
546 NULL, &res);
547 if (error) {
548
549
550
551
552 (*lastinop)--;
553 count = 1;
554 if (xfs_bulkstat(mp, lastinop, &count, xfs_bulkstat_one,
555 sizeof(xfs_bstat_t), buffer, done))
556 return error;
557 if (count == 0 || (xfs_ino_t)*lastinop != ino)
558 return error == EFSCORRUPTED ?
559 XFS_ERROR(EINVAL) : error;
560 else
561 return 0;
562 }
563 *done = 0;
564 return 0;
565}
566
567int
568xfs_inumbers_fmt(
569 void __user *ubuffer,
570 const xfs_inogrp_t *buffer,
571 long count,
572 long *written)
573{
574 if (copy_to_user(ubuffer, buffer, count * sizeof(*buffer)))
575 return -EFAULT;
576 *written = count * sizeof(*buffer);
577 return 0;
578}
579
580
581
582
583int
584xfs_inumbers(
585 xfs_mount_t *mp,
586 xfs_ino_t *lastino,
587 int *count,
588 void __user *ubuffer,
589 inumbers_fmt_pf formatter)
590{
591 xfs_buf_t *agbp;
592 xfs_agino_t agino;
593 xfs_agnumber_t agno;
594 int bcount;
595 xfs_inogrp_t *buffer;
596 int bufidx;
597 xfs_btree_cur_t *cur;
598 int error;
599 xfs_inobt_rec_incore_t r;
600 int i;
601 xfs_ino_t ino;
602 int left;
603 int tmp;
604
605 ino = (xfs_ino_t)*lastino;
606 agno = XFS_INO_TO_AGNO(mp, ino);
607 agino = XFS_INO_TO_AGINO(mp, ino);
608 left = *count;
609 *count = 0;
610 bcount = MIN(left, (int)(PAGE_SIZE / sizeof(*buffer)));
611 buffer = kmem_alloc(bcount * sizeof(*buffer), KM_SLEEP);
612 error = bufidx = 0;
613 cur = NULL;
614 agbp = NULL;
615 while (left > 0 && agno < mp->m_sb.sb_agcount) {
616 if (agbp == NULL) {
617 error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
618 if (error) {
619
620
621
622
623 ASSERT(cur == NULL);
624 agbp = NULL;
625 agno++;
626 agino = 0;
627 continue;
628 }
629 cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
630 error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_GE,
631 &tmp);
632 if (error) {
633 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
634 cur = NULL;
635 xfs_buf_relse(agbp);
636 agbp = NULL;
637
638
639
640
641
642 agino += XFS_INODES_PER_CHUNK - 1;
643 continue;
644 }
645 }
646 error = xfs_inobt_get_rec(cur, &r, &i);
647 if (error || i == 0) {
648 xfs_buf_relse(agbp);
649 agbp = NULL;
650 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
651 cur = NULL;
652 agno++;
653 agino = 0;
654 continue;
655 }
656 agino = r.ir_startino + XFS_INODES_PER_CHUNK - 1;
657 buffer[bufidx].xi_startino =
658 XFS_AGINO_TO_INO(mp, agno, r.ir_startino);
659 buffer[bufidx].xi_alloccount =
660 XFS_INODES_PER_CHUNK - r.ir_freecount;
661 buffer[bufidx].xi_allocmask = ~r.ir_free;
662 bufidx++;
663 left--;
664 if (bufidx == bcount) {
665 long written;
666 if (formatter(ubuffer, buffer, bufidx, &written)) {
667 error = XFS_ERROR(EFAULT);
668 break;
669 }
670 ubuffer += written;
671 *count += bufidx;
672 bufidx = 0;
673 }
674 if (left) {
675 error = xfs_btree_increment(cur, 0, &tmp);
676 if (error) {
677 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
678 cur = NULL;
679 xfs_buf_relse(agbp);
680 agbp = NULL;
681
682
683
684
685 agino += XFS_INODES_PER_CHUNK;
686 continue;
687 }
688 }
689 }
690 if (!error) {
691 if (bufidx) {
692 long written;
693 if (formatter(ubuffer, buffer, bufidx, &written))
694 error = XFS_ERROR(EFAULT);
695 else
696 *count += bufidx;
697 }
698 *lastino = XFS_AGINO_TO_INO(mp, agno, agino);
699 }
700 kmem_free(buffer);
701 if (cur)
702 xfs_btree_del_cursor(cur, (error ? XFS_BTREE_ERROR :
703 XFS_BTREE_NOERROR));
704 if (agbp)
705 xfs_buf_relse(agbp);
706 return error;
707}
708