1 /*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include <linux/capability.h>
20
21 #include "xfs.h"
22 #include "xfs_fs.h"
23 #include "xfs_bit.h"
24 #include "xfs_log.h"
25 #include "xfs_inum.h"
26 #include "xfs_trans.h"
27 #include "xfs_sb.h"
28 #include "xfs_ag.h"
29 #include "xfs_alloc.h"
30 #include "xfs_quota.h"
31 #include "xfs_mount.h"
32 #include "xfs_bmap_btree.h"
33 #include "xfs_inode.h"
34 #include "xfs_itable.h"
35 #include "xfs_bmap.h"
36 #include "xfs_rtalloc.h"
37 #include "xfs_error.h"
38 #include "xfs_attr.h"
39 #include "xfs_buf_item.h"
40 #include "xfs_utils.h"
41 #include "xfs_qm.h"
42 #include "xfs_trace.h"
43
44 STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
45 STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
46 uint);
47 STATIC uint xfs_qm_export_flags(uint);
48 STATIC uint xfs_qm_export_qtype_flags(uint);
49 STATIC void xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *,
50 fs_disk_quota_t *);
51
52
53 /*
54 * Turn off quota accounting and/or enforcement for all udquots and/or
55 * gdquots. Called only at unmount time.
56 *
57 * This assumes that there are no dquots of this file system cached
58 * incore, and modifies the ondisk dquot directly. Therefore, for example,
59 * it is an error to call this twice, without purging the cache.
60 */
61 int
xfs_qm_scall_quotaoff(xfs_mount_t * mp,uint flags)62 xfs_qm_scall_quotaoff(
63 xfs_mount_t *mp,
64 uint flags)
65 {
66 struct xfs_quotainfo *q = mp->m_quotainfo;
67 uint dqtype;
68 int error;
69 uint inactivate_flags;
70 xfs_qoff_logitem_t *qoffstart;
71 int nculprits;
72
73 /*
74 * No file system can have quotas enabled on disk but not in core.
75 * Note that quota utilities (like quotaoff) _expect_
76 * errno == EEXIST here.
77 */
78 if ((mp->m_qflags & flags) == 0)
79 return XFS_ERROR(EEXIST);
80 error = 0;
81
82 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
83
84 /*
85 * We don't want to deal with two quotaoffs messing up each other,
86 * so we're going to serialize it. quotaoff isn't exactly a performance
87 * critical thing.
88 * If quotaoff, then we must be dealing with the root filesystem.
89 */
90 ASSERT(q);
91 mutex_lock(&q->qi_quotaofflock);
92
93 /*
94 * If we're just turning off quota enforcement, change mp and go.
95 */
96 if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
97 mp->m_qflags &= ~(flags);
98
99 spin_lock(&mp->m_sb_lock);
100 mp->m_sb.sb_qflags = mp->m_qflags;
101 spin_unlock(&mp->m_sb_lock);
102 mutex_unlock(&q->qi_quotaofflock);
103
104 /* XXX what to do if error ? Revert back to old vals incore ? */
105 error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
106 return (error);
107 }
108
109 dqtype = 0;
110 inactivate_flags = 0;
111 /*
112 * If accounting is off, we must turn enforcement off, clear the
113 * quota 'CHKD' certificate to make it known that we have to
114 * do a quotacheck the next time this quota is turned on.
115 */
116 if (flags & XFS_UQUOTA_ACCT) {
117 dqtype |= XFS_QMOPT_UQUOTA;
118 flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
119 inactivate_flags |= XFS_UQUOTA_ACTIVE;
120 }
121 if (flags & XFS_GQUOTA_ACCT) {
122 dqtype |= XFS_QMOPT_GQUOTA;
123 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
124 inactivate_flags |= XFS_GQUOTA_ACTIVE;
125 } else if (flags & XFS_PQUOTA_ACCT) {
126 dqtype |= XFS_QMOPT_PQUOTA;
127 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
128 inactivate_flags |= XFS_PQUOTA_ACTIVE;
129 }
130
131 /*
132 * Nothing to do? Don't complain. This happens when we're just
133 * turning off quota enforcement.
134 */
135 if ((mp->m_qflags & flags) == 0)
136 goto out_unlock;
137
138 /*
139 * Write the LI_QUOTAOFF log record, and do SB changes atomically,
140 * and synchronously. If we fail to write, we should abort the
141 * operation as it cannot be recovered safely if we crash.
142 */
143 error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
144 if (error)
145 goto out_unlock;
146
147 /*
148 * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
149 * to take care of the race between dqget and quotaoff. We don't take
150 * any special locks to reset these bits. All processes need to check
151 * these bits *after* taking inode lock(s) to see if the particular
152 * quota type is in the process of being turned off. If *ACTIVE, it is
153 * guaranteed that all dquot structures and all quotainode ptrs will all
154 * stay valid as long as that inode is kept locked.
155 *
156 * There is no turning back after this.
157 */
158 mp->m_qflags &= ~inactivate_flags;
159
160 /*
161 * Give back all the dquot reference(s) held by inodes.
162 * Here we go thru every single incore inode in this file system, and
163 * do a dqrele on the i_udquot/i_gdquot that it may have.
164 * Essentially, as long as somebody has an inode locked, this guarantees
165 * that quotas will not be turned off. This is handy because in a
166 * transaction once we lock the inode(s) and check for quotaon, we can
167 * depend on the quota inodes (and other things) being valid as long as
168 * we keep the lock(s).
169 */
170 xfs_qm_dqrele_all_inodes(mp, flags);
171
172 /*
173 * Next we make the changes in the quota flag in the mount struct.
174 * This isn't protected by a particular lock directly, because we
175 * don't want to take a mrlock every time we depend on quotas being on.
176 */
177 mp->m_qflags &= ~(flags);
178
179 /*
180 * Go through all the dquots of this file system and purge them,
181 * according to what was turned off. We may not be able to get rid
182 * of all dquots, because dquots can have temporary references that
183 * are not attached to inodes. eg. xfs_setattr, xfs_create.
184 * So, if we couldn't purge all the dquots from the filesystem,
185 * we can't get rid of the incore data structures.
186 */
187 while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype)))
188 delay(10 * nculprits);
189
190 /*
191 * Transactions that had started before ACTIVE state bit was cleared
192 * could have logged many dquots, so they'd have higher LSNs than
193 * the first QUOTAOFF log record does. If we happen to crash when
194 * the tail of the log has gone past the QUOTAOFF record, but
195 * before the last dquot modification, those dquots __will__
196 * recover, and that's not good.
197 *
198 * So, we have QUOTAOFF start and end logitems; the start
199 * logitem won't get overwritten until the end logitem appears...
200 */
201 error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
202 if (error) {
203 /* We're screwed now. Shutdown is the only option. */
204 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
205 goto out_unlock;
206 }
207
208 /*
209 * If quotas is completely disabled, close shop.
210 */
211 if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
212 ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
213 mutex_unlock(&q->qi_quotaofflock);
214 xfs_qm_destroy_quotainfo(mp);
215 return (0);
216 }
217
218 /*
219 * Release our quotainode references if we don't need them anymore.
220 */
221 if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) {
222 IRELE(q->qi_uquotaip);
223 q->qi_uquotaip = NULL;
224 }
225 if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && q->qi_gquotaip) {
226 IRELE(q->qi_gquotaip);
227 q->qi_gquotaip = NULL;
228 }
229
230 out_unlock:
231 mutex_unlock(&q->qi_quotaofflock);
232 return error;
233 }
234
235 STATIC int
xfs_qm_scall_trunc_qfile(struct xfs_mount * mp,xfs_ino_t ino)236 xfs_qm_scall_trunc_qfile(
237 struct xfs_mount *mp,
238 xfs_ino_t ino)
239 {
240 struct xfs_inode *ip;
241 struct xfs_trans *tp;
242 int error;
243
244 if (ino == NULLFSINO)
245 return 0;
246
247 error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
248 if (error)
249 return error;
250
251 xfs_ilock(ip, XFS_IOLOCK_EXCL);
252
253 tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE);
254 error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
255 XFS_TRANS_PERM_LOG_RES,
256 XFS_ITRUNCATE_LOG_COUNT);
257 if (error) {
258 xfs_trans_cancel(tp, 0);
259 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
260 goto out_put;
261 }
262
263 xfs_ilock(ip, XFS_ILOCK_EXCL);
264 xfs_trans_ijoin(tp, ip);
265
266 error = xfs_itruncate_finish(&tp, ip, 0, XFS_DATA_FORK, 1);
267 if (error) {
268 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
269 XFS_TRANS_ABORT);
270 goto out_unlock;
271 }
272
273 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
274 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
275
276 out_unlock:
277 xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
278 out_put:
279 IRELE(ip);
280 return error;
281 }
282
283 int
xfs_qm_scall_trunc_qfiles(xfs_mount_t * mp,uint flags)284 xfs_qm_scall_trunc_qfiles(
285 xfs_mount_t *mp,
286 uint flags)
287 {
288 int error = 0, error2 = 0;
289
290 if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
291 xfs_debug(mp, "%s: flags=%x m_qflags=%x\n",
292 __func__, flags, mp->m_qflags);
293 return XFS_ERROR(EINVAL);
294 }
295
296 if (flags & XFS_DQ_USER)
297 error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
298 if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ))
299 error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
300
301 return error ? error : error2;
302 }
303
304 /*
305 * Switch on (a given) quota enforcement for a filesystem. This takes
306 * effect immediately.
307 * (Switching on quota accounting must be done at mount time.)
308 */
309 int
xfs_qm_scall_quotaon(xfs_mount_t * mp,uint flags)310 xfs_qm_scall_quotaon(
311 xfs_mount_t *mp,
312 uint flags)
313 {
314 int error;
315 uint qf;
316 __int64_t sbflags;
317
318 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
319 /*
320 * Switching on quota accounting must be done at mount time.
321 */
322 flags &= ~(XFS_ALL_QUOTA_ACCT);
323
324 sbflags = 0;
325
326 if (flags == 0) {
327 xfs_debug(mp, "%s: zero flags, m_qflags=%x\n",
328 __func__, mp->m_qflags);
329 return XFS_ERROR(EINVAL);
330 }
331
332 /* No fs can turn on quotas with a delayed effect */
333 ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
334
335 /*
336 * Can't enforce without accounting. We check the superblock
337 * qflags here instead of m_qflags because rootfs can have
338 * quota acct on ondisk without m_qflags' knowing.
339 */
340 if (((flags & XFS_UQUOTA_ACCT) == 0 &&
341 (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
342 (flags & XFS_UQUOTA_ENFD))
343 ||
344 ((flags & XFS_PQUOTA_ACCT) == 0 &&
345 (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
346 (flags & XFS_GQUOTA_ACCT) == 0 &&
347 (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
348 (flags & XFS_OQUOTA_ENFD))) {
349 xfs_debug(mp,
350 "%s: Can't enforce without acct, flags=%x sbflags=%x\n",
351 __func__, flags, mp->m_sb.sb_qflags);
352 return XFS_ERROR(EINVAL);
353 }
354 /*
355 * If everything's up to-date incore, then don't waste time.
356 */
357 if ((mp->m_qflags & flags) == flags)
358 return XFS_ERROR(EEXIST);
359
360 /*
361 * Change sb_qflags on disk but not incore mp->qflags
362 * if this is the root filesystem.
363 */
364 spin_lock(&mp->m_sb_lock);
365 qf = mp->m_sb.sb_qflags;
366 mp->m_sb.sb_qflags = qf | flags;
367 spin_unlock(&mp->m_sb_lock);
368
369 /*
370 * There's nothing to change if it's the same.
371 */
372 if ((qf & flags) == flags && sbflags == 0)
373 return XFS_ERROR(EEXIST);
374 sbflags |= XFS_SB_QFLAGS;
375
376 if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
377 return (error);
378 /*
379 * If we aren't trying to switch on quota enforcement, we are done.
380 */
381 if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
382 (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
383 ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
384 (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
385 ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
386 (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
387 (flags & XFS_ALL_QUOTA_ENFD) == 0)
388 return (0);
389
390 if (! XFS_IS_QUOTA_RUNNING(mp))
391 return XFS_ERROR(ESRCH);
392
393 /*
394 * Switch on quota enforcement in core.
395 */
396 mutex_lock(&mp->m_quotainfo->qi_quotaofflock);
397 mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
398 mutex_unlock(&mp->m_quotainfo->qi_quotaofflock);
399
400 return (0);
401 }
402
403
404 /*
405 * Return quota status information, such as uquota-off, enforcements, etc.
406 */
407 int
xfs_qm_scall_getqstat(struct xfs_mount * mp,struct fs_quota_stat * out)408 xfs_qm_scall_getqstat(
409 struct xfs_mount *mp,
410 struct fs_quota_stat *out)
411 {
412 struct xfs_quotainfo *q = mp->m_quotainfo;
413 struct xfs_inode *uip, *gip;
414 boolean_t tempuqip, tempgqip;
415
416 uip = gip = NULL;
417 tempuqip = tempgqip = B_FALSE;
418 memset(out, 0, sizeof(fs_quota_stat_t));
419
420 out->qs_version = FS_QSTAT_VERSION;
421 if (!xfs_sb_version_hasquota(&mp->m_sb)) {
422 out->qs_uquota.qfs_ino = NULLFSINO;
423 out->qs_gquota.qfs_ino = NULLFSINO;
424 return (0);
425 }
426 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
427 (XFS_ALL_QUOTA_ACCT|
428 XFS_ALL_QUOTA_ENFD));
429 out->qs_pad = 0;
430 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
431 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
432
433 if (q) {
434 uip = q->qi_uquotaip;
435 gip = q->qi_gquotaip;
436 }
437 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
438 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
439 0, 0, &uip) == 0)
440 tempuqip = B_TRUE;
441 }
442 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
443 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
444 0, 0, &gip) == 0)
445 tempgqip = B_TRUE;
446 }
447 if (uip) {
448 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
449 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
450 if (tempuqip)
451 IRELE(uip);
452 }
453 if (gip) {
454 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
455 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
456 if (tempgqip)
457 IRELE(gip);
458 }
459 if (q) {
460 out->qs_incoredqs = q->qi_dquots;
461 out->qs_btimelimit = q->qi_btimelimit;
462 out->qs_itimelimit = q->qi_itimelimit;
463 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
464 out->qs_bwarnlimit = q->qi_bwarnlimit;
465 out->qs_iwarnlimit = q->qi_iwarnlimit;
466 }
467 return 0;
468 }
469
470 #define XFS_DQ_MASK \
471 (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK)
472
473 /*
474 * Adjust quota limits, and start/stop timers accordingly.
475 */
476 int
xfs_qm_scall_setqlim(xfs_mount_t * mp,xfs_dqid_t id,uint type,fs_disk_quota_t * newlim)477 xfs_qm_scall_setqlim(
478 xfs_mount_t *mp,
479 xfs_dqid_t id,
480 uint type,
481 fs_disk_quota_t *newlim)
482 {
483 struct xfs_quotainfo *q = mp->m_quotainfo;
484 xfs_disk_dquot_t *ddq;
485 xfs_dquot_t *dqp;
486 xfs_trans_t *tp;
487 int error;
488 xfs_qcnt_t hard, soft;
489
490 if (newlim->d_fieldmask & ~XFS_DQ_MASK)
491 return EINVAL;
492 if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0)
493 return 0;
494
495 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
496 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128,
497 0, 0, XFS_DEFAULT_LOG_COUNT))) {
498 xfs_trans_cancel(tp, 0);
499 return (error);
500 }
501
502 /*
503 * We don't want to race with a quotaoff so take the quotaoff lock.
504 * (We don't hold an inode lock, so there's nothing else to stop
505 * a quotaoff from happening). (XXXThis doesn't currently happen
506 * because we take the vfslock before calling xfs_qm_sysent).
507 */
508 mutex_lock(&q->qi_quotaofflock);
509
510 /*
511 * Get the dquot (locked), and join it to the transaction.
512 * Allocate the dquot if this doesn't exist.
513 */
514 if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) {
515 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
516 ASSERT(error != ENOENT);
517 goto out_unlock;
518 }
519 xfs_trans_dqjoin(tp, dqp);
520 ddq = &dqp->q_core;
521
522 /*
523 * Make sure that hardlimits are >= soft limits before changing.
524 */
525 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
526 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
527 be64_to_cpu(ddq->d_blk_hardlimit);
528 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
529 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
530 be64_to_cpu(ddq->d_blk_softlimit);
531 if (hard == 0 || hard >= soft) {
532 ddq->d_blk_hardlimit = cpu_to_be64(hard);
533 ddq->d_blk_softlimit = cpu_to_be64(soft);
534 if (id == 0) {
535 q->qi_bhardlimit = hard;
536 q->qi_bsoftlimit = soft;
537 }
538 } else {
539 xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft);
540 }
541 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
542 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
543 be64_to_cpu(ddq->d_rtb_hardlimit);
544 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
545 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
546 be64_to_cpu(ddq->d_rtb_softlimit);
547 if (hard == 0 || hard >= soft) {
548 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
549 ddq->d_rtb_softlimit = cpu_to_be64(soft);
550 if (id == 0) {
551 q->qi_rtbhardlimit = hard;
552 q->qi_rtbsoftlimit = soft;
553 }
554 } else {
555 xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
556 }
557
558 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
559 (xfs_qcnt_t) newlim->d_ino_hardlimit :
560 be64_to_cpu(ddq->d_ino_hardlimit);
561 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
562 (xfs_qcnt_t) newlim->d_ino_softlimit :
563 be64_to_cpu(ddq->d_ino_softlimit);
564 if (hard == 0 || hard >= soft) {
565 ddq->d_ino_hardlimit = cpu_to_be64(hard);
566 ddq->d_ino_softlimit = cpu_to_be64(soft);
567 if (id == 0) {
568 q->qi_ihardlimit = hard;
569 q->qi_isoftlimit = soft;
570 }
571 } else {
572 xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft);
573 }
574
575 /*
576 * Update warnings counter(s) if requested
577 */
578 if (newlim->d_fieldmask & FS_DQ_BWARNS)
579 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
580 if (newlim->d_fieldmask & FS_DQ_IWARNS)
581 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
582 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
583 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
584
585 if (id == 0) {
586 /*
587 * Timelimits for the super user set the relative time
588 * the other users can be over quota for this file system.
589 * If it is zero a default is used. Ditto for the default
590 * soft and hard limit values (already done, above), and
591 * for warnings.
592 */
593 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
594 q->qi_btimelimit = newlim->d_btimer;
595 ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
596 }
597 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
598 q->qi_itimelimit = newlim->d_itimer;
599 ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
600 }
601 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
602 q->qi_rtbtimelimit = newlim->d_rtbtimer;
603 ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
604 }
605 if (newlim->d_fieldmask & FS_DQ_BWARNS)
606 q->qi_bwarnlimit = newlim->d_bwarns;
607 if (newlim->d_fieldmask & FS_DQ_IWARNS)
608 q->qi_iwarnlimit = newlim->d_iwarns;
609 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
610 q->qi_rtbwarnlimit = newlim->d_rtbwarns;
611 } else {
612 /*
613 * If the user is now over quota, start the timelimit.
614 * The user will not be 'warned'.
615 * Note that we keep the timers ticking, whether enforcement
616 * is on or off. We don't really want to bother with iterating
617 * over all ondisk dquots and turning the timers on/off.
618 */
619 xfs_qm_adjust_dqtimers(mp, ddq);
620 }
621 dqp->dq_flags |= XFS_DQ_DIRTY;
622 xfs_trans_log_dquot(tp, dqp);
623
624 error = xfs_trans_commit(tp, 0);
625 xfs_qm_dqprint(dqp);
626 xfs_qm_dqrele(dqp);
627
628 out_unlock:
629 mutex_unlock(&q->qi_quotaofflock);
630 return error;
631 }
632
633 int
xfs_qm_scall_getquota(xfs_mount_t * mp,xfs_dqid_t id,uint type,fs_disk_quota_t * out)634 xfs_qm_scall_getquota(
635 xfs_mount_t *mp,
636 xfs_dqid_t id,
637 uint type,
638 fs_disk_quota_t *out)
639 {
640 xfs_dquot_t *dqp;
641 int error;
642
643 /*
644 * Try to get the dquot. We don't want it allocated on disk, so
645 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
646 * exist, we'll get ENOENT back.
647 */
648 if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) {
649 return (error);
650 }
651
652 /*
653 * If everything's NULL, this dquot doesn't quite exist as far as
654 * our utility programs are concerned.
655 */
656 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
657 xfs_qm_dqput(dqp);
658 return XFS_ERROR(ENOENT);
659 }
660 /* xfs_qm_dqprint(dqp); */
661 /*
662 * Convert the disk dquot to the exportable format
663 */
664 xfs_qm_export_dquot(mp, &dqp->q_core, out);
665 xfs_qm_dqput(dqp);
666 return (error ? XFS_ERROR(EFAULT) : 0);
667 }
668
669
670 STATIC int
xfs_qm_log_quotaoff_end(xfs_mount_t * mp,xfs_qoff_logitem_t * startqoff,uint flags)671 xfs_qm_log_quotaoff_end(
672 xfs_mount_t *mp,
673 xfs_qoff_logitem_t *startqoff,
674 uint flags)
675 {
676 xfs_trans_t *tp;
677 int error;
678 xfs_qoff_logitem_t *qoffi;
679
680 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
681
682 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2,
683 0, 0, XFS_DEFAULT_LOG_COUNT))) {
684 xfs_trans_cancel(tp, 0);
685 return (error);
686 }
687
688 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
689 flags & XFS_ALL_QUOTA_ACCT);
690 xfs_trans_log_quotaoff_item(tp, qoffi);
691
692 /*
693 * We have to make sure that the transaction is secure on disk before we
694 * return and actually stop quota accounting. So, make it synchronous.
695 * We don't care about quotoff's performance.
696 */
697 xfs_trans_set_sync(tp);
698 error = xfs_trans_commit(tp, 0);
699 return (error);
700 }
701
702
703 STATIC int
xfs_qm_log_quotaoff(xfs_mount_t * mp,xfs_qoff_logitem_t ** qoffstartp,uint flags)704 xfs_qm_log_quotaoff(
705 xfs_mount_t *mp,
706 xfs_qoff_logitem_t **qoffstartp,
707 uint flags)
708 {
709 xfs_trans_t *tp;
710 int error;
711 xfs_qoff_logitem_t *qoffi=NULL;
712 uint oldsbqflag=0;
713
714 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
715 if ((error = xfs_trans_reserve(tp, 0,
716 sizeof(xfs_qoff_logitem_t) * 2 +
717 mp->m_sb.sb_sectsize + 128,
718 0,
719 0,
720 XFS_DEFAULT_LOG_COUNT))) {
721 goto error0;
722 }
723
724 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
725 xfs_trans_log_quotaoff_item(tp, qoffi);
726
727 spin_lock(&mp->m_sb_lock);
728 oldsbqflag = mp->m_sb.sb_qflags;
729 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
730 spin_unlock(&mp->m_sb_lock);
731
732 xfs_mod_sb(tp, XFS_SB_QFLAGS);
733
734 /*
735 * We have to make sure that the transaction is secure on disk before we
736 * return and actually stop quota accounting. So, make it synchronous.
737 * We don't care about quotoff's performance.
738 */
739 xfs_trans_set_sync(tp);
740 error = xfs_trans_commit(tp, 0);
741
742 error0:
743 if (error) {
744 xfs_trans_cancel(tp, 0);
745 /*
746 * No one else is modifying sb_qflags, so this is OK.
747 * We still hold the quotaofflock.
748 */
749 spin_lock(&mp->m_sb_lock);
750 mp->m_sb.sb_qflags = oldsbqflag;
751 spin_unlock(&mp->m_sb_lock);
752 }
753 *qoffstartp = qoffi;
754 return (error);
755 }
756
757
758 /*
759 * Translate an internal style on-disk-dquot to the exportable format.
760 * The main differences are that the counters/limits are all in Basic
761 * Blocks (BBs) instead of the internal FSBs, and all on-disk data has
762 * to be converted to the native endianness.
763 */
764 STATIC void
xfs_qm_export_dquot(xfs_mount_t * mp,xfs_disk_dquot_t * src,struct fs_disk_quota * dst)765 xfs_qm_export_dquot(
766 xfs_mount_t *mp,
767 xfs_disk_dquot_t *src,
768 struct fs_disk_quota *dst)
769 {
770 memset(dst, 0, sizeof(*dst));
771 dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */
772 dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags);
773 dst->d_id = be32_to_cpu(src->d_id);
774 dst->d_blk_hardlimit =
775 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit));
776 dst->d_blk_softlimit =
777 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit));
778 dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit);
779 dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit);
780 dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount));
781 dst->d_icount = be64_to_cpu(src->d_icount);
782 dst->d_btimer = be32_to_cpu(src->d_btimer);
783 dst->d_itimer = be32_to_cpu(src->d_itimer);
784 dst->d_iwarns = be16_to_cpu(src->d_iwarns);
785 dst->d_bwarns = be16_to_cpu(src->d_bwarns);
786 dst->d_rtb_hardlimit =
787 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit));
788 dst->d_rtb_softlimit =
789 XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit));
790 dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount));
791 dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer);
792 dst->d_rtbwarns = be16_to_cpu(src->d_rtbwarns);
793
794 /*
795 * Internally, we don't reset all the timers when quota enforcement
796 * gets turned off. No need to confuse the user level code,
797 * so return zeroes in that case.
798 */
799 if ((!XFS_IS_UQUOTA_ENFORCED(mp) && src->d_flags == XFS_DQ_USER) ||
800 (!XFS_IS_OQUOTA_ENFORCED(mp) &&
801 (src->d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) {
802 dst->d_btimer = 0;
803 dst->d_itimer = 0;
804 dst->d_rtbtimer = 0;
805 }
806
807 #ifdef DEBUG
808 if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) ||
809 (XFS_IS_OQUOTA_ENFORCED(mp) &&
810 (dst->d_flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)))) &&
811 dst->d_id != 0) {
812 if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) &&
813 (dst->d_blk_softlimit > 0)) {
814 ASSERT(dst->d_btimer != 0);
815 }
816 if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) &&
817 (dst->d_ino_softlimit > 0)) {
818 ASSERT(dst->d_itimer != 0);
819 }
820 }
821 #endif
822 }
823
824 STATIC uint
xfs_qm_export_qtype_flags(uint flags)825 xfs_qm_export_qtype_flags(
826 uint flags)
827 {
828 /*
829 * Can't be more than one, or none.
830 */
831 ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) !=
832 (FS_PROJ_QUOTA | FS_USER_QUOTA));
833 ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) !=
834 (FS_PROJ_QUOTA | FS_GROUP_QUOTA));
835 ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) !=
836 (FS_USER_QUOTA | FS_GROUP_QUOTA));
837 ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0);
838
839 return (flags & XFS_DQ_USER) ?
840 FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
841 FS_PROJ_QUOTA : FS_GROUP_QUOTA;
842 }
843
844 STATIC uint
xfs_qm_export_flags(uint flags)845 xfs_qm_export_flags(
846 uint flags)
847 {
848 uint uflags;
849
850 uflags = 0;
851 if (flags & XFS_UQUOTA_ACCT)
852 uflags |= FS_QUOTA_UDQ_ACCT;
853 if (flags & XFS_PQUOTA_ACCT)
854 uflags |= FS_QUOTA_PDQ_ACCT;
855 if (flags & XFS_GQUOTA_ACCT)
856 uflags |= FS_QUOTA_GDQ_ACCT;
857 if (flags & XFS_UQUOTA_ENFD)
858 uflags |= FS_QUOTA_UDQ_ENFD;
859 if (flags & (XFS_OQUOTA_ENFD)) {
860 uflags |= (flags & XFS_GQUOTA_ACCT) ?
861 FS_QUOTA_GDQ_ENFD : FS_QUOTA_PDQ_ENFD;
862 }
863 return (uflags);
864 }
865
866
867 STATIC int
xfs_dqrele_inode(struct xfs_inode * ip,struct xfs_perag * pag,int flags)868 xfs_dqrele_inode(
869 struct xfs_inode *ip,
870 struct xfs_perag *pag,
871 int flags)
872 {
873 /* skip quota inodes */
874 if (ip == ip->i_mount->m_quotainfo->qi_uquotaip ||
875 ip == ip->i_mount->m_quotainfo->qi_gquotaip) {
876 ASSERT(ip->i_udquot == NULL);
877 ASSERT(ip->i_gdquot == NULL);
878 return 0;
879 }
880
881 xfs_ilock(ip, XFS_ILOCK_EXCL);
882 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
883 xfs_qm_dqrele(ip->i_udquot);
884 ip->i_udquot = NULL;
885 }
886 if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) {
887 xfs_qm_dqrele(ip->i_gdquot);
888 ip->i_gdquot = NULL;
889 }
890 xfs_iunlock(ip, XFS_ILOCK_EXCL);
891 return 0;
892 }
893
894
895 /*
896 * Go thru all the inodes in the file system, releasing their dquots.
897 *
898 * Note that the mount structure gets modified to indicate that quotas are off
899 * AFTER this, in the case of quotaoff.
900 */
901 void
xfs_qm_dqrele_all_inodes(struct xfs_mount * mp,uint flags)902 xfs_qm_dqrele_all_inodes(
903 struct xfs_mount *mp,
904 uint flags)
905 {
906 ASSERT(mp->m_quotainfo);
907 xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags);
908 }
909
910 /*------------------------------------------------------------------------*/
911 #ifdef DEBUG
912 /*
913 * This contains all the test functions for XFS disk quotas.
914 * Currently it does a quota accounting check. ie. it walks through
915 * all inodes in the file system, calculating the dquot accounting fields,
916 * and prints out any inconsistencies.
917 */
918 xfs_dqhash_t *qmtest_udqtab;
919 xfs_dqhash_t *qmtest_gdqtab;
920 int qmtest_hashmask;
921 int qmtest_nfails;
922 struct mutex qcheck_lock;
923
924 #define DQTEST_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
925 (__psunsigned_t)(id)) & \
926 (qmtest_hashmask - 1))
927
928 #define DQTEST_HASH(mp, id, type) ((type & XFS_DQ_USER) ? \
929 (qmtest_udqtab + \
930 DQTEST_HASHVAL(mp, id)) : \
931 (qmtest_gdqtab + \
932 DQTEST_HASHVAL(mp, id)))
933
934 #define DQTEST_LIST_PRINT(l, NXT, title) \
935 { \
936 xfs_dqtest_t *dqp; int i = 0;\
937 xfs_debug(NULL, "%s (#%d)", title, (int) (l)->qh_nelems); \
938 for (dqp = (xfs_dqtest_t *)(l)->qh_next; dqp != NULL; \
939 dqp = (xfs_dqtest_t *)dqp->NXT) { \
940 xfs_debug(dqp->q_mount, \
941 " %d. \"%d (%s)\" bcnt = %d, icnt = %d", \
942 ++i, dqp->d_id, DQFLAGTO_TYPESTR(dqp), \
943 dqp->d_bcount, dqp->d_icount); } \
944 }
945
946 typedef struct dqtest {
947 uint dq_flags; /* various flags (XFS_DQ_*) */
948 struct list_head q_hashlist;
949 xfs_dqhash_t *q_hash; /* the hashchain header */
950 xfs_mount_t *q_mount; /* filesystem this relates to */
951 xfs_dqid_t d_id; /* user id or group id */
952 xfs_qcnt_t d_bcount; /* # disk blocks owned by the user */
953 xfs_qcnt_t d_icount; /* # inodes owned by the user */
954 } xfs_dqtest_t;
955
956 STATIC void
xfs_qm_hashinsert(xfs_dqhash_t * h,xfs_dqtest_t * dqp)957 xfs_qm_hashinsert(xfs_dqhash_t *h, xfs_dqtest_t *dqp)
958 {
959 list_add(&dqp->q_hashlist, &h->qh_list);
960 h->qh_version++;
961 h->qh_nelems++;
962 }
963 STATIC void
xfs_qm_dqtest_print(struct xfs_mount * mp,struct dqtest * d)964 xfs_qm_dqtest_print(
965 struct xfs_mount *mp,
966 struct dqtest *d)
967 {
968 xfs_debug(mp, "-----------DQTEST DQUOT----------------");
969 xfs_debug(mp, "---- dquot ID = %d", d->d_id);
970 xfs_debug(mp, "---- fs = 0x%p", d->q_mount);
971 xfs_debug(mp, "---- bcount = %Lu (0x%x)",
972 d->d_bcount, (int)d->d_bcount);
973 xfs_debug(mp, "---- icount = %Lu (0x%x)",
974 d->d_icount, (int)d->d_icount);
975 xfs_debug(mp, "---------------------------");
976 }
977
978 STATIC void
xfs_qm_dqtest_failed(xfs_dqtest_t * d,xfs_dquot_t * dqp,char * reason,xfs_qcnt_t a,xfs_qcnt_t b,int error)979 xfs_qm_dqtest_failed(
980 xfs_dqtest_t *d,
981 xfs_dquot_t *dqp,
982 char *reason,
983 xfs_qcnt_t a,
984 xfs_qcnt_t b,
985 int error)
986 {
987 qmtest_nfails++;
988 if (error)
989 xfs_debug(dqp->q_mount,
990 "quotacheck failed id=%d, err=%d\nreason: %s",
991 d->d_id, error, reason);
992 else
993 xfs_debug(dqp->q_mount,
994 "quotacheck failed id=%d (%s) [%d != %d]",
995 d->d_id, reason, (int)a, (int)b);
996 xfs_qm_dqtest_print(dqp->q_mount, d);
997 if (dqp)
998 xfs_qm_dqprint(dqp);
999 }
1000
1001 STATIC int
xfs_dqtest_cmp2(xfs_dqtest_t * d,xfs_dquot_t * dqp)1002 xfs_dqtest_cmp2(
1003 xfs_dqtest_t *d,
1004 xfs_dquot_t *dqp)
1005 {
1006 int err = 0;
1007 if (be64_to_cpu(dqp->q_core.d_icount) != d->d_icount) {
1008 xfs_qm_dqtest_failed(d, dqp, "icount mismatch",
1009 be64_to_cpu(dqp->q_core.d_icount),
1010 d->d_icount, 0);
1011 err++;
1012 }
1013 if (be64_to_cpu(dqp->q_core.d_bcount) != d->d_bcount) {
1014 xfs_qm_dqtest_failed(d, dqp, "bcount mismatch",
1015 be64_to_cpu(dqp->q_core.d_bcount),
1016 d->d_bcount, 0);
1017 err++;
1018 }
1019 if (dqp->q_core.d_blk_softlimit &&
1020 be64_to_cpu(dqp->q_core.d_bcount) >=
1021 be64_to_cpu(dqp->q_core.d_blk_softlimit)) {
1022 if (!dqp->q_core.d_btimer && dqp->q_core.d_id) {
1023 xfs_debug(dqp->q_mount,
1024 "%d [%s] BLK TIMER NOT STARTED",
1025 d->d_id, DQFLAGTO_TYPESTR(d));
1026 err++;
1027 }
1028 }
1029 if (dqp->q_core.d_ino_softlimit &&
1030 be64_to_cpu(dqp->q_core.d_icount) >=
1031 be64_to_cpu(dqp->q_core.d_ino_softlimit)) {
1032 if (!dqp->q_core.d_itimer && dqp->q_core.d_id) {
1033 xfs_debug(dqp->q_mount,
1034 "%d [%s] INO TIMER NOT STARTED",
1035 d->d_id, DQFLAGTO_TYPESTR(d));
1036 err++;
1037 }
1038 }
1039 #ifdef QUOTADEBUG
1040 if (!err) {
1041 xfs_debug(dqp->q_mount, "%d [%s] qchecked",
1042 d->d_id, DQFLAGTO_TYPESTR(d));
1043 }
1044 #endif
1045 return (err);
1046 }
1047
1048 STATIC void
xfs_dqtest_cmp(xfs_dqtest_t * d)1049 xfs_dqtest_cmp(
1050 xfs_dqtest_t *d)
1051 {
1052 xfs_dquot_t *dqp;
1053 int error;
1054
1055 /* xfs_qm_dqtest_print(d); */
1056 if ((error = xfs_qm_dqget(d->q_mount, NULL, d->d_id, d->dq_flags, 0,
1057 &dqp))) {
1058 xfs_qm_dqtest_failed(d, NULL, "dqget failed", 0, 0, error);
1059 return;
1060 }
1061 xfs_dqtest_cmp2(d, dqp);
1062 xfs_qm_dqput(dqp);
1063 }
1064
1065 STATIC int
xfs_qm_internalqcheck_dqget(xfs_mount_t * mp,xfs_dqid_t id,uint type,xfs_dqtest_t ** O_dq)1066 xfs_qm_internalqcheck_dqget(
1067 xfs_mount_t *mp,
1068 xfs_dqid_t id,
1069 uint type,
1070 xfs_dqtest_t **O_dq)
1071 {
1072 xfs_dqtest_t *d;
1073 xfs_dqhash_t *h;
1074
1075 h = DQTEST_HASH(mp, id, type);
1076 list_for_each_entry(d, &h->qh_list, q_hashlist) {
1077 if (d->d_id == id && mp == d->q_mount) {
1078 *O_dq = d;
1079 return (0);
1080 }
1081 }
1082 d = kmem_zalloc(sizeof(xfs_dqtest_t), KM_SLEEP);
1083 d->dq_flags = type;
1084 d->d_id = id;
1085 d->q_mount = mp;
1086 d->q_hash = h;
1087 INIT_LIST_HEAD(&d->q_hashlist);
1088 xfs_qm_hashinsert(h, d);
1089 *O_dq = d;
1090 return (0);
1091 }
1092
1093 STATIC void
xfs_qm_internalqcheck_get_dquots(xfs_mount_t * mp,xfs_dqid_t uid,xfs_dqid_t projid,xfs_dqid_t gid,xfs_dqtest_t ** ud,xfs_dqtest_t ** gd)1094 xfs_qm_internalqcheck_get_dquots(
1095 xfs_mount_t *mp,
1096 xfs_dqid_t uid,
1097 xfs_dqid_t projid,
1098 xfs_dqid_t gid,
1099 xfs_dqtest_t **ud,
1100 xfs_dqtest_t **gd)
1101 {
1102 if (XFS_IS_UQUOTA_ON(mp))
1103 xfs_qm_internalqcheck_dqget(mp, uid, XFS_DQ_USER, ud);
1104 if (XFS_IS_GQUOTA_ON(mp))
1105 xfs_qm_internalqcheck_dqget(mp, gid, XFS_DQ_GROUP, gd);
1106 else if (XFS_IS_PQUOTA_ON(mp))
1107 xfs_qm_internalqcheck_dqget(mp, projid, XFS_DQ_PROJ, gd);
1108 }
1109
1110
1111 STATIC void
xfs_qm_internalqcheck_dqadjust(xfs_inode_t * ip,xfs_dqtest_t * d)1112 xfs_qm_internalqcheck_dqadjust(
1113 xfs_inode_t *ip,
1114 xfs_dqtest_t *d)
1115 {
1116 d->d_icount++;
1117 d->d_bcount += (xfs_qcnt_t)ip->i_d.di_nblocks;
1118 }
1119
1120 STATIC int
xfs_qm_internalqcheck_adjust(xfs_mount_t * mp,xfs_ino_t ino,void __user * buffer,int ubsize,int * ubused,int * res)1121 xfs_qm_internalqcheck_adjust(
1122 xfs_mount_t *mp, /* mount point for filesystem */
1123 xfs_ino_t ino, /* inode number to get data for */
1124 void __user *buffer, /* not used */
1125 int ubsize, /* not used */
1126 int *ubused, /* not used */
1127 int *res) /* bulkstat result code */
1128 {
1129 xfs_inode_t *ip;
1130 xfs_dqtest_t *ud, *gd;
1131 uint lock_flags;
1132 boolean_t ipreleased;
1133 int error;
1134
1135 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1136
1137 if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) {
1138 *res = BULKSTAT_RV_NOTHING;
1139 xfs_debug(mp, "%s: ino=%llu, uqino=%llu, gqino=%llu\n",
1140 __func__, (unsigned long long) ino,
1141 (unsigned long long) mp->m_sb.sb_uquotino,
1142 (unsigned long long) mp->m_sb.sb_gquotino);
1143 return XFS_ERROR(EINVAL);
1144 }
1145 ipreleased = B_FALSE;
1146 again:
1147 lock_flags = XFS_ILOCK_SHARED;
1148 if ((error = xfs_iget(mp, NULL, ino, 0, lock_flags, &ip))) {
1149 *res = BULKSTAT_RV_NOTHING;
1150 return (error);
1151 }
1152
1153 /*
1154 * This inode can have blocks after eof which can get released
1155 * when we send it to inactive. Since we don't check the dquot
1156 * until the after all our calculations are done, we must get rid
1157 * of those now.
1158 */
1159 if (! ipreleased) {
1160 xfs_iunlock(ip, lock_flags);
1161 IRELE(ip);
1162 ipreleased = B_TRUE;
1163 goto again;
1164 }
1165 xfs_qm_internalqcheck_get_dquots(mp,
1166 (xfs_dqid_t) ip->i_d.di_uid,
1167 (xfs_dqid_t) xfs_get_projid(ip),
1168 (xfs_dqid_t) ip->i_d.di_gid,
1169 &ud, &gd);
1170 if (XFS_IS_UQUOTA_ON(mp)) {
1171 ASSERT(ud);
1172 xfs_qm_internalqcheck_dqadjust(ip, ud);
1173 }
1174 if (XFS_IS_OQUOTA_ON(mp)) {
1175 ASSERT(gd);
1176 xfs_qm_internalqcheck_dqadjust(ip, gd);
1177 }
1178 xfs_iunlock(ip, lock_flags);
1179 IRELE(ip);
1180 *res = BULKSTAT_RV_DIDONE;
1181 return (0);
1182 }
1183
1184
1185 /* PRIVATE, debugging */
1186 int
xfs_qm_internalqcheck(xfs_mount_t * mp)1187 xfs_qm_internalqcheck(
1188 xfs_mount_t *mp)
1189 {
1190 xfs_ino_t lastino;
1191 int done, count;
1192 int i;
1193 int error;
1194
1195 lastino = 0;
1196 qmtest_hashmask = 32;
1197 count = 5;
1198 done = 0;
1199 qmtest_nfails = 0;
1200
1201 if (! XFS_IS_QUOTA_ON(mp))
1202 return XFS_ERROR(ESRCH);
1203
1204 xfs_log_force(mp, XFS_LOG_SYNC);
1205 XFS_bflush(mp->m_ddev_targp);
1206 xfs_log_force(mp, XFS_LOG_SYNC);
1207 XFS_bflush(mp->m_ddev_targp);
1208
1209 mutex_lock(&qcheck_lock);
1210 /* There should be absolutely no quota activity while this
1211 is going on. */
1212 qmtest_udqtab = kmem_zalloc(qmtest_hashmask *
1213 sizeof(xfs_dqhash_t), KM_SLEEP);
1214 qmtest_gdqtab = kmem_zalloc(qmtest_hashmask *
1215 sizeof(xfs_dqhash_t), KM_SLEEP);
1216 do {
1217 /*
1218 * Iterate thru all the inodes in the file system,
1219 * adjusting the corresponding dquot counters
1220 */
1221 error = xfs_bulkstat(mp, &lastino, &count,
1222 xfs_qm_internalqcheck_adjust,
1223 0, NULL, &done);
1224 if (error) {
1225 xfs_debug(mp, "Bulkstat returned error 0x%x", error);
1226 break;
1227 }
1228 } while (!done);
1229
1230 xfs_debug(mp, "Checking results against system dquots");
1231 for (i = 0; i < qmtest_hashmask; i++) {
1232 xfs_dqtest_t *d, *n;
1233 xfs_dqhash_t *h;
1234
1235 h = &qmtest_udqtab[i];
1236 list_for_each_entry_safe(d, n, &h->qh_list, q_hashlist) {
1237 xfs_dqtest_cmp(d);
1238 kmem_free(d);
1239 }
1240 h = &qmtest_gdqtab[i];
1241 list_for_each_entry_safe(d, n, &h->qh_list, q_hashlist) {
1242 xfs_dqtest_cmp(d);
1243 kmem_free(d);
1244 }
1245 }
1246
1247 if (qmtest_nfails) {
1248 xfs_debug(mp, "******** quotacheck failed ********");
1249 xfs_debug(mp, "failures = %d", qmtest_nfails);
1250 } else {
1251 xfs_debug(mp, "******** quotacheck successful! ********");
1252 }
1253 kmem_free(qmtest_udqtab);
1254 kmem_free(qmtest_gdqtab);
1255 mutex_unlock(&qcheck_lock);
1256 return (qmtest_nfails);
1257 }
1258
1259 #endif /* DEBUG */
1260