2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
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.
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.
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
19 #include <linux/capability.h>
25 #include "xfs_trans.h"
28 #include "xfs_alloc.h"
29 #include "xfs_quota.h"
30 #include "xfs_mount.h"
31 #include "xfs_bmap_btree.h"
32 #include "xfs_inode.h"
33 #include "xfs_inode_item.h"
34 #include "xfs_itable.h"
36 #include "xfs_rtalloc.h"
37 #include "xfs_error.h"
39 #include "xfs_buf_item.h"
40 #include "xfs_utils.h"
42 #include "xfs_trace.h"
43 #include "xfs_icache.h"
45 STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
46 STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
48 STATIC uint xfs_qm_export_flags(uint);
49 STATIC uint xfs_qm_export_qtype_flags(uint);
52 * Turn off quota accounting and/or enforcement for all udquots and/or
53 * gdquots. Called only at unmount time.
55 * This assumes that there are no dquots of this file system cached
56 * incore, and modifies the ondisk dquot directly. Therefore, for example,
57 * it is an error to call this twice, without purging the cache.
60 xfs_qm_scall_quotaoff(
64 struct xfs_quotainfo *q = mp->m_quotainfo;
67 uint inactivate_flags;
68 xfs_qoff_logitem_t *qoffstart;
71 * No file system can have quotas enabled on disk but not in core.
72 * Note that quota utilities (like quotaoff) _expect_
73 * errno == EEXIST here.
75 if ((mp->m_qflags & flags) == 0)
76 return XFS_ERROR(EEXIST);
79 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
82 * We don't want to deal with two quotaoffs messing up each other,
83 * so we're going to serialize it. quotaoff isn't exactly a performance
85 * If quotaoff, then we must be dealing with the root filesystem.
88 mutex_lock(&q->qi_quotaofflock);
91 * If we're just turning off quota enforcement, change mp and go.
93 if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
94 mp->m_qflags &= ~(flags);
96 spin_lock(&mp->m_sb_lock);
97 mp->m_sb.sb_qflags = mp->m_qflags;
98 spin_unlock(&mp->m_sb_lock);
99 mutex_unlock(&q->qi_quotaofflock);
101 /* XXX what to do if error ? Revert back to old vals incore ? */
102 error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
107 inactivate_flags = 0;
109 * If accounting is off, we must turn enforcement off, clear the
110 * quota 'CHKD' certificate to make it known that we have to
111 * do a quotacheck the next time this quota is turned on.
113 if (flags & XFS_UQUOTA_ACCT) {
114 dqtype |= XFS_QMOPT_UQUOTA;
115 flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
116 inactivate_flags |= XFS_UQUOTA_ACTIVE;
118 if (flags & XFS_GQUOTA_ACCT) {
119 dqtype |= XFS_QMOPT_GQUOTA;
120 flags |= (XFS_GQUOTA_CHKD | XFS_GQUOTA_ENFD);
121 inactivate_flags |= XFS_GQUOTA_ACTIVE;
123 if (flags & XFS_PQUOTA_ACCT) {
124 dqtype |= XFS_QMOPT_PQUOTA;
125 flags |= (XFS_PQUOTA_CHKD | XFS_PQUOTA_ENFD);
126 inactivate_flags |= XFS_PQUOTA_ACTIVE;
130 * Nothing to do? Don't complain. This happens when we're just
131 * turning off quota enforcement.
133 if ((mp->m_qflags & flags) == 0)
137 * Write the LI_QUOTAOFF log record, and do SB changes atomically,
138 * and synchronously. If we fail to write, we should abort the
139 * operation as it cannot be recovered safely if we crash.
141 error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
146 * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
147 * to take care of the race between dqget and quotaoff. We don't take
148 * any special locks to reset these bits. All processes need to check
149 * these bits *after* taking inode lock(s) to see if the particular
150 * quota type is in the process of being turned off. If *ACTIVE, it is
151 * guaranteed that all dquot structures and all quotainode ptrs will all
152 * stay valid as long as that inode is kept locked.
154 * There is no turning back after this.
156 mp->m_qflags &= ~inactivate_flags;
159 * Give back all the dquot reference(s) held by inodes.
160 * Here we go thru every single incore inode in this file system, and
161 * do a dqrele on the i_udquot/i_gdquot that it may have.
162 * Essentially, as long as somebody has an inode locked, this guarantees
163 * that quotas will not be turned off. This is handy because in a
164 * transaction once we lock the inode(s) and check for quotaon, we can
165 * depend on the quota inodes (and other things) being valid as long as
166 * we keep the lock(s).
168 xfs_qm_dqrele_all_inodes(mp, flags);
171 * Next we make the changes in the quota flag in the mount struct.
172 * This isn't protected by a particular lock directly, because we
173 * don't want to take a mrlock every time we depend on quotas being on.
175 mp->m_qflags &= ~flags;
178 * Go through all the dquots of this file system and purge them,
179 * according to what was turned off.
181 xfs_qm_dqpurge_all(mp, dqtype);
184 * Transactions that had started before ACTIVE state bit was cleared
185 * could have logged many dquots, so they'd have higher LSNs than
186 * the first QUOTAOFF log record does. If we happen to crash when
187 * the tail of the log has gone past the QUOTAOFF record, but
188 * before the last dquot modification, those dquots __will__
189 * recover, and that's not good.
191 * So, we have QUOTAOFF start and end logitems; the start
192 * logitem won't get overwritten until the end logitem appears...
194 error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
196 /* We're screwed now. Shutdown is the only option. */
197 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
202 * If quotas is completely disabled, close shop.
204 if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
205 ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
206 mutex_unlock(&q->qi_quotaofflock);
207 xfs_qm_destroy_quotainfo(mp);
212 * Release our quotainode references if we don't need them anymore.
214 if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) {
215 IRELE(q->qi_uquotaip);
216 q->qi_uquotaip = NULL;
218 if ((dqtype & XFS_QMOPT_GQUOTA) && q->qi_gquotaip) {
219 IRELE(q->qi_gquotaip);
220 q->qi_gquotaip = NULL;
222 if ((dqtype & XFS_QMOPT_PQUOTA) && q->qi_pquotaip) {
223 IRELE(q->qi_pquotaip);
224 q->qi_pquotaip = NULL;
228 mutex_unlock(&q->qi_quotaofflock);
233 xfs_qm_scall_trunc_qfile(
234 struct xfs_mount *mp,
237 struct xfs_inode *ip;
238 struct xfs_trans *tp;
241 if (ino == NULLFSINO)
244 error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
248 xfs_ilock(ip, XFS_IOLOCK_EXCL);
250 tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE);
251 error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
252 XFS_TRANS_PERM_LOG_RES,
253 XFS_ITRUNCATE_LOG_COUNT);
255 xfs_trans_cancel(tp, 0);
256 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
260 xfs_ilock(ip, XFS_ILOCK_EXCL);
261 xfs_trans_ijoin(tp, ip, 0);
264 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
266 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
268 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
273 ASSERT(ip->i_d.di_nextents == 0);
275 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
276 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
279 xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
286 xfs_qm_scall_trunc_qfiles(
290 int error = 0, error2 = 0;
292 if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
293 xfs_debug(mp, "%s: flags=%x m_qflags=%x\n",
294 __func__, flags, mp->m_qflags);
295 return XFS_ERROR(EINVAL);
298 if (flags & XFS_DQ_USER)
299 error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
300 if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ))
301 error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
303 return error ? error : error2;
307 * Switch on (a given) quota enforcement for a filesystem. This takes
308 * effect immediately.
309 * (Switching on quota accounting must be done at mount time.)
312 xfs_qm_scall_quotaon(
320 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
322 * Switching on quota accounting must be done at mount time.
324 flags &= ~(XFS_ALL_QUOTA_ACCT);
329 xfs_debug(mp, "%s: zero flags, m_qflags=%x\n",
330 __func__, mp->m_qflags);
331 return XFS_ERROR(EINVAL);
334 /* No fs can turn on quotas with a delayed effect */
335 ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
338 * Can't enforce without accounting. We check the superblock
339 * qflags here instead of m_qflags because rootfs can have
340 * quota acct on ondisk without m_qflags' knowing.
342 if (((flags & XFS_UQUOTA_ACCT) == 0 &&
343 (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
344 (flags & XFS_UQUOTA_ENFD)) ||
345 ((flags & XFS_GQUOTA_ACCT) == 0 &&
346 (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
347 (flags & XFS_GQUOTA_ENFD)) ||
348 ((flags & XFS_PQUOTA_ACCT) == 0 &&
349 (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
350 (flags & XFS_PQUOTA_ENFD))) {
352 "%s: Can't enforce without acct, flags=%x sbflags=%x\n",
353 __func__, flags, mp->m_sb.sb_qflags);
354 return XFS_ERROR(EINVAL);
357 * If everything's up to-date incore, then don't waste time.
359 if ((mp->m_qflags & flags) == flags)
360 return XFS_ERROR(EEXIST);
363 * Change sb_qflags on disk but not incore mp->qflags
364 * if this is the root filesystem.
366 spin_lock(&mp->m_sb_lock);
367 qf = mp->m_sb.sb_qflags;
368 mp->m_sb.sb_qflags = qf | flags;
369 spin_unlock(&mp->m_sb_lock);
372 * There's nothing to change if it's the same.
374 if ((qf & flags) == flags && sbflags == 0)
375 return XFS_ERROR(EEXIST);
376 sbflags |= XFS_SB_QFLAGS;
378 if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
381 * If we aren't trying to switch on quota enforcement, we are done.
383 if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
384 (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
385 ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
386 (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
387 ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
388 (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
389 (flags & XFS_ALL_QUOTA_ENFD) == 0)
392 if (! XFS_IS_QUOTA_RUNNING(mp))
393 return XFS_ERROR(ESRCH);
396 * Switch on quota enforcement in core.
398 mutex_lock(&mp->m_quotainfo->qi_quotaofflock);
399 mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
400 mutex_unlock(&mp->m_quotainfo->qi_quotaofflock);
407 * Return quota status information, such as uquota-off, enforcements, etc.
410 xfs_qm_scall_getqstat(
411 struct xfs_mount *mp,
412 struct fs_quota_stat *out)
414 struct xfs_quotainfo *q = mp->m_quotainfo;
415 struct xfs_inode *uip = NULL;
416 struct xfs_inode *gip = NULL;
417 bool tempuqip = false;
418 bool tempgqip = false;
420 memset(out, 0, sizeof(fs_quota_stat_t));
422 out->qs_version = FS_QSTAT_VERSION;
423 if (!xfs_sb_version_hasquota(&mp->m_sb)) {
424 out->qs_uquota.qfs_ino = NULLFSINO;
425 out->qs_gquota.qfs_ino = NULLFSINO;
428 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
430 XFS_ALL_QUOTA_ENFD));
432 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
433 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
436 uip = q->qi_uquotaip;
437 gip = q->qi_gquotaip;
439 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
440 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
444 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
445 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
450 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
451 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
456 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
457 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
462 out->qs_incoredqs = q->qi_dquots;
463 out->qs_btimelimit = q->qi_btimelimit;
464 out->qs_itimelimit = q->qi_itimelimit;
465 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
466 out->qs_bwarnlimit = q->qi_bwarnlimit;
467 out->qs_iwarnlimit = q->qi_iwarnlimit;
472 #define XFS_DQ_MASK \
473 (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK)
476 * Adjust quota limits, and start/stop timers accordingly.
479 xfs_qm_scall_setqlim(
480 struct xfs_mount *mp,
483 fs_disk_quota_t *newlim)
485 struct xfs_quotainfo *q = mp->m_quotainfo;
486 struct xfs_disk_dquot *ddq;
487 struct xfs_dquot *dqp;
488 struct xfs_trans *tp;
490 xfs_qcnt_t hard, soft;
492 if (newlim->d_fieldmask & ~XFS_DQ_MASK)
494 if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0)
498 * We don't want to race with a quotaoff so take the quotaoff lock.
499 * We don't hold an inode lock, so there's nothing else to stop
500 * a quotaoff from happening.
502 mutex_lock(&q->qi_quotaofflock);
505 * Get the dquot (locked) before we start, as we need to do a
506 * transaction to allocate it if it doesn't exist. Once we have the
507 * dquot, unlock it so we can start the next transaction safely. We hold
508 * a reference to the dquot, so it's safe to do this unlock/lock without
509 * it being reclaimed in the mean time.
511 error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp);
513 ASSERT(error != ENOENT);
518 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
519 error = xfs_trans_reserve(tp, 0, XFS_QM_SETQLIM_LOG_RES(mp),
520 0, 0, XFS_DEFAULT_LOG_COUNT);
522 xfs_trans_cancel(tp, 0);
527 xfs_trans_dqjoin(tp, dqp);
531 * Make sure that hardlimits are >= soft limits before changing.
533 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
534 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
535 be64_to_cpu(ddq->d_blk_hardlimit);
536 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
537 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
538 be64_to_cpu(ddq->d_blk_softlimit);
539 if (hard == 0 || hard >= soft) {
540 ddq->d_blk_hardlimit = cpu_to_be64(hard);
541 ddq->d_blk_softlimit = cpu_to_be64(soft);
542 xfs_dquot_set_prealloc_limits(dqp);
544 q->qi_bhardlimit = hard;
545 q->qi_bsoftlimit = soft;
548 xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft);
550 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
551 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
552 be64_to_cpu(ddq->d_rtb_hardlimit);
553 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
554 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
555 be64_to_cpu(ddq->d_rtb_softlimit);
556 if (hard == 0 || hard >= soft) {
557 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
558 ddq->d_rtb_softlimit = cpu_to_be64(soft);
560 q->qi_rtbhardlimit = hard;
561 q->qi_rtbsoftlimit = soft;
564 xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
567 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
568 (xfs_qcnt_t) newlim->d_ino_hardlimit :
569 be64_to_cpu(ddq->d_ino_hardlimit);
570 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
571 (xfs_qcnt_t) newlim->d_ino_softlimit :
572 be64_to_cpu(ddq->d_ino_softlimit);
573 if (hard == 0 || hard >= soft) {
574 ddq->d_ino_hardlimit = cpu_to_be64(hard);
575 ddq->d_ino_softlimit = cpu_to_be64(soft);
577 q->qi_ihardlimit = hard;
578 q->qi_isoftlimit = soft;
581 xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft);
585 * Update warnings counter(s) if requested
587 if (newlim->d_fieldmask & FS_DQ_BWARNS)
588 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
589 if (newlim->d_fieldmask & FS_DQ_IWARNS)
590 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
591 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
592 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
596 * Timelimits for the super user set the relative time
597 * the other users can be over quota for this file system.
598 * If it is zero a default is used. Ditto for the default
599 * soft and hard limit values (already done, above), and
602 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
603 q->qi_btimelimit = newlim->d_btimer;
604 ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
606 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
607 q->qi_itimelimit = newlim->d_itimer;
608 ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
610 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
611 q->qi_rtbtimelimit = newlim->d_rtbtimer;
612 ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
614 if (newlim->d_fieldmask & FS_DQ_BWARNS)
615 q->qi_bwarnlimit = newlim->d_bwarns;
616 if (newlim->d_fieldmask & FS_DQ_IWARNS)
617 q->qi_iwarnlimit = newlim->d_iwarns;
618 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
619 q->qi_rtbwarnlimit = newlim->d_rtbwarns;
622 * If the user is now over quota, start the timelimit.
623 * The user will not be 'warned'.
624 * Note that we keep the timers ticking, whether enforcement
625 * is on or off. We don't really want to bother with iterating
626 * over all ondisk dquots and turning the timers on/off.
628 xfs_qm_adjust_dqtimers(mp, ddq);
630 dqp->dq_flags |= XFS_DQ_DIRTY;
631 xfs_trans_log_dquot(tp, dqp);
633 error = xfs_trans_commit(tp, 0);
638 mutex_unlock(&q->qi_quotaofflock);
643 xfs_qm_log_quotaoff_end(
645 xfs_qoff_logitem_t *startqoff,
650 xfs_qoff_logitem_t *qoffi;
652 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
654 error = xfs_trans_reserve(tp, 0, XFS_QM_QUOTAOFF_END_LOG_RES(mp),
655 0, 0, XFS_DEFAULT_LOG_COUNT);
657 xfs_trans_cancel(tp, 0);
661 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
662 flags & XFS_ALL_QUOTA_ACCT);
663 xfs_trans_log_quotaoff_item(tp, qoffi);
666 * We have to make sure that the transaction is secure on disk before we
667 * return and actually stop quota accounting. So, make it synchronous.
668 * We don't care about quotoff's performance.
670 xfs_trans_set_sync(tp);
671 error = xfs_trans_commit(tp, 0);
679 xfs_qoff_logitem_t **qoffstartp,
684 xfs_qoff_logitem_t *qoffi=NULL;
687 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
688 error = xfs_trans_reserve(tp, 0, XFS_QM_QUOTAOFF_LOG_RES(mp),
689 0, 0, XFS_DEFAULT_LOG_COUNT);
693 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
694 xfs_trans_log_quotaoff_item(tp, qoffi);
696 spin_lock(&mp->m_sb_lock);
697 oldsbqflag = mp->m_sb.sb_qflags;
698 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
699 spin_unlock(&mp->m_sb_lock);
701 xfs_mod_sb(tp, XFS_SB_QFLAGS);
704 * We have to make sure that the transaction is secure on disk before we
705 * return and actually stop quota accounting. So, make it synchronous.
706 * We don't care about quotoff's performance.
708 xfs_trans_set_sync(tp);
709 error = xfs_trans_commit(tp, 0);
713 xfs_trans_cancel(tp, 0);
715 * No one else is modifying sb_qflags, so this is OK.
716 * We still hold the quotaofflock.
718 spin_lock(&mp->m_sb_lock);
719 mp->m_sb.sb_qflags = oldsbqflag;
720 spin_unlock(&mp->m_sb_lock);
728 xfs_qm_scall_getquota(
729 struct xfs_mount *mp,
732 struct fs_disk_quota *dst)
734 struct xfs_dquot *dqp;
738 * Try to get the dquot. We don't want it allocated on disk, so
739 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
740 * exist, we'll get ENOENT back.
742 error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp);
747 * If everything's NULL, this dquot doesn't quite exist as far as
748 * our utility programs are concerned.
750 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
751 error = XFS_ERROR(ENOENT);
755 memset(dst, 0, sizeof(*dst));
756 dst->d_version = FS_DQUOT_VERSION;
757 dst->d_flags = xfs_qm_export_qtype_flags(dqp->q_core.d_flags);
758 dst->d_id = be32_to_cpu(dqp->q_core.d_id);
759 dst->d_blk_hardlimit =
760 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit));
761 dst->d_blk_softlimit =
762 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit));
763 dst->d_ino_hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
764 dst->d_ino_softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
765 dst->d_bcount = XFS_FSB_TO_BB(mp, dqp->q_res_bcount);
766 dst->d_icount = dqp->q_res_icount;
767 dst->d_btimer = be32_to_cpu(dqp->q_core.d_btimer);
768 dst->d_itimer = be32_to_cpu(dqp->q_core.d_itimer);
769 dst->d_iwarns = be16_to_cpu(dqp->q_core.d_iwarns);
770 dst->d_bwarns = be16_to_cpu(dqp->q_core.d_bwarns);
771 dst->d_rtb_hardlimit =
772 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit));
773 dst->d_rtb_softlimit =
774 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit));
775 dst->d_rtbcount = XFS_FSB_TO_BB(mp, dqp->q_res_rtbcount);
776 dst->d_rtbtimer = be32_to_cpu(dqp->q_core.d_rtbtimer);
777 dst->d_rtbwarns = be16_to_cpu(dqp->q_core.d_rtbwarns);
780 * Internally, we don't reset all the timers when quota enforcement
781 * gets turned off. No need to confuse the user level code,
782 * so return zeroes in that case.
784 if ((!XFS_IS_UQUOTA_ENFORCED(mp) &&
785 dqp->q_core.d_flags == XFS_DQ_USER) ||
786 (!XFS_IS_GQUOTA_ENFORCED(mp) &&
787 dqp->q_core.d_flags == XFS_DQ_GROUP) ||
788 (!XFS_IS_PQUOTA_ENFORCED(mp) &&
789 dqp->q_core.d_flags == XFS_DQ_PROJ)) {
796 if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) ||
797 (XFS_IS_GQUOTA_ENFORCED(mp) && dst->d_flags == FS_GROUP_QUOTA) ||
798 (XFS_IS_PQUOTA_ENFORCED(mp) && dst->d_flags == FS_PROJ_QUOTA)) &&
800 if ((dst->d_bcount > dst->d_blk_softlimit) &&
801 (dst->d_blk_softlimit > 0)) {
802 ASSERT(dst->d_btimer != 0);
804 if ((dst->d_icount > dst->d_ino_softlimit) &&
805 (dst->d_ino_softlimit > 0)) {
806 ASSERT(dst->d_itimer != 0);
816 xfs_qm_export_qtype_flags(
820 * Can't be more than one, or none.
822 ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) !=
823 (FS_PROJ_QUOTA | FS_USER_QUOTA));
824 ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) !=
825 (FS_PROJ_QUOTA | FS_GROUP_QUOTA));
826 ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) !=
827 (FS_USER_QUOTA | FS_GROUP_QUOTA));
828 ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0);
830 return (flags & XFS_DQ_USER) ?
831 FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
832 FS_PROJ_QUOTA : FS_GROUP_QUOTA;
842 if (flags & XFS_UQUOTA_ACCT)
843 uflags |= FS_QUOTA_UDQ_ACCT;
844 if (flags & XFS_GQUOTA_ACCT)
845 uflags |= FS_QUOTA_GDQ_ACCT;
846 if (flags & XFS_PQUOTA_ACCT)
847 uflags |= FS_QUOTA_PDQ_ACCT;
848 if (flags & XFS_UQUOTA_ENFD)
849 uflags |= FS_QUOTA_UDQ_ENFD;
850 if (flags & XFS_GQUOTA_ENFD)
851 uflags |= FS_QUOTA_GDQ_ENFD;
852 if (flags & XFS_PQUOTA_ENFD)
853 uflags |= FS_QUOTA_PDQ_ENFD;
860 struct xfs_inode *ip,
861 struct xfs_perag *pag,
865 /* skip quota inodes */
866 if (ip == ip->i_mount->m_quotainfo->qi_uquotaip ||
867 ip == ip->i_mount->m_quotainfo->qi_gquotaip ||
868 ip == ip->i_mount->m_quotainfo->qi_pquotaip) {
869 ASSERT(ip->i_udquot == NULL);
870 ASSERT(ip->i_gdquot == NULL);
871 ASSERT(ip->i_pdquot == NULL);
875 xfs_ilock(ip, XFS_ILOCK_EXCL);
876 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
877 xfs_qm_dqrele(ip->i_udquot);
880 if ((flags & XFS_GQUOTA_ACCT) && ip->i_gdquot) {
881 xfs_qm_dqrele(ip->i_gdquot);
884 if ((flags & XFS_PQUOTA_ACCT) && ip->i_pdquot) {
885 xfs_qm_dqrele(ip->i_pdquot);
888 xfs_iunlock(ip, XFS_ILOCK_EXCL);
894 * Go thru all the inodes in the file system, releasing their dquots.
896 * Note that the mount structure gets modified to indicate that quotas are off
897 * AFTER this, in the case of quotaoff.
900 xfs_qm_dqrele_all_inodes(
901 struct xfs_mount *mp,
904 ASSERT(mp->m_quotainfo);
905 xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags, NULL);