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quota: Add a new quotactl command Q_XGETQSTATV
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CommitLineData
1da177e4 1/*
4ce3121f
NS
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
1da177e4 4 *
4ce3121f
NS
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
1da177e4
LT
7 * published by the Free Software Foundation.
8 *
4ce3121f
NS
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.
1da177e4 13 *
4ce3121f
NS
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
1da177e4 17 */
16f7e0fe
RD
18
19#include <linux/capability.h>
20
1da177e4
LT
21#include "xfs.h"
22#include "xfs_fs.h"
6ca1c906 23#include "xfs_format.h"
a844f451 24#include "xfs_bit.h"
1da177e4
LT
25#include "xfs_log.h"
26#include "xfs_trans.h"
27#include "xfs_sb.h"
a844f451 28#include "xfs_ag.h"
1da177e4 29#include "xfs_alloc.h"
1da177e4
LT
30#include "xfs_quota.h"
31#include "xfs_mount.h"
1da177e4 32#include "xfs_bmap_btree.h"
1da177e4 33#include "xfs_inode.h"
673e8e59 34#include "xfs_inode_item.h"
a844f451 35#include "xfs_itable.h"
1da177e4 36#include "xfs_bmap.h"
1da177e4
LT
37#include "xfs_rtalloc.h"
38#include "xfs_error.h"
1da177e4
LT
39#include "xfs_attr.h"
40#include "xfs_buf_item.h"
1da177e4 41#include "xfs_qm.h"
0b1b213f 42#include "xfs_trace.h"
6d8b79cf 43#include "xfs_icache.h"
1da177e4 44
1da177e4
LT
45STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
46STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
47 uint);
1da177e4 48STATIC uint xfs_qm_export_flags(uint);
1da177e4 49STATIC uint xfs_qm_export_qtype_flags(uint);
1da177e4 50
1da177e4
LT
51/*
52 * Turn off quota accounting and/or enforcement for all udquots and/or
53 * gdquots. Called only at unmount time.
54 *
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.
58 */
fcafb71b 59int
1da177e4
LT
60xfs_qm_scall_quotaoff(
61 xfs_mount_t *mp,
fcafb71b 62 uint flags)
1da177e4 63{
8a7b8a89 64 struct xfs_quotainfo *q = mp->m_quotainfo;
1da177e4 65 uint dqtype;
1da177e4
LT
66 int error;
67 uint inactivate_flags;
68 xfs_qoff_logitem_t *qoffstart;
1da177e4 69
1da177e4
LT
70 /*
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.
74 */
75 if ((mp->m_qflags & flags) == 0)
76 return XFS_ERROR(EEXIST);
77 error = 0;
78
79 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
80
81 /*
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
84 * critical thing.
85 * If quotaoff, then we must be dealing with the root filesystem.
86 */
8a7b8a89
CH
87 ASSERT(q);
88 mutex_lock(&q->qi_quotaofflock);
1da177e4
LT
89
90 /*
91 * If we're just turning off quota enforcement, change mp and go.
92 */
93 if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
94 mp->m_qflags &= ~(flags);
95
3685c2a1 96 spin_lock(&mp->m_sb_lock);
1da177e4 97 mp->m_sb.sb_qflags = mp->m_qflags;
3685c2a1 98 spin_unlock(&mp->m_sb_lock);
8a7b8a89 99 mutex_unlock(&q->qi_quotaofflock);
1da177e4
LT
100
101 /* XXX what to do if error ? Revert back to old vals incore ? */
102 error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
103 return (error);
104 }
105
106 dqtype = 0;
107 inactivate_flags = 0;
108 /*
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.
112 */
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;
117 }
118 if (flags & XFS_GQUOTA_ACCT) {
119 dqtype |= XFS_QMOPT_GQUOTA;
83e782e1 120 flags |= (XFS_GQUOTA_CHKD | XFS_GQUOTA_ENFD);
1da177e4 121 inactivate_flags |= XFS_GQUOTA_ACTIVE;
92f8ff73
CS
122 }
123 if (flags & XFS_PQUOTA_ACCT) {
c8ad20ff 124 dqtype |= XFS_QMOPT_PQUOTA;
83e782e1 125 flags |= (XFS_PQUOTA_CHKD | XFS_PQUOTA_ENFD);
c8ad20ff 126 inactivate_flags |= XFS_PQUOTA_ACTIVE;
1da177e4
LT
127 }
128
129 /*
130 * Nothing to do? Don't complain. This happens when we're just
131 * turning off quota enforcement.
132 */
8a7b8a89
CH
133 if ((mp->m_qflags & flags) == 0)
134 goto out_unlock;
1da177e4
LT
135
136 /*
137 * Write the LI_QUOTAOFF log record, and do SB changes atomically,
cb6edc26
DC
138 * and synchronously. If we fail to write, we should abort the
139 * operation as it cannot be recovered safely if we crash.
1da177e4 140 */
cb6edc26
DC
141 error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
142 if (error)
8a7b8a89 143 goto out_unlock;
1da177e4
LT
144
145 /*
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.
153 *
154 * There is no turning back after this.
155 */
156 mp->m_qflags &= ~inactivate_flags;
157
158 /*
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).
167 */
168 xfs_qm_dqrele_all_inodes(mp, flags);
169
170 /*
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
25985edc 173 * don't want to take a mrlock every time we depend on quotas being on.
1da177e4 174 */
b84a3a96 175 mp->m_qflags &= ~flags;
1da177e4
LT
176
177 /*
178 * Go through all the dquots of this file system and purge them,
b84a3a96 179 * according to what was turned off.
1da177e4 180 */
b84a3a96 181 xfs_qm_dqpurge_all(mp, dqtype);
1da177e4
LT
182
183 /*
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.
190 *
191 * So, we have QUOTAOFF start and end logitems; the start
192 * logitem won't get overwritten until the end logitem appears...
193 */
cb6edc26
DC
194 error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
195 if (error) {
196 /* We're screwed now. Shutdown is the only option. */
197 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
8a7b8a89 198 goto out_unlock;
cb6edc26 199 }
1da177e4
LT
200
201 /*
c31ad439 202 * If all quotas are completely turned off, close shop.
1da177e4 203 */
c31ad439 204 if (mp->m_qflags == 0) {
8a7b8a89 205 mutex_unlock(&q->qi_quotaofflock);
1da177e4
LT
206 xfs_qm_destroy_quotainfo(mp);
207 return (0);
208 }
209
210 /*
8a7b8a89 211 * Release our quotainode references if we don't need them anymore.
1da177e4 212 */
8a7b8a89
CH
213 if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) {
214 IRELE(q->qi_uquotaip);
215 q->qi_uquotaip = NULL;
1da177e4 216 }
92f8ff73 217 if ((dqtype & XFS_QMOPT_GQUOTA) && q->qi_gquotaip) {
8a7b8a89
CH
218 IRELE(q->qi_gquotaip);
219 q->qi_gquotaip = NULL;
1da177e4 220 }
92f8ff73
CS
221 if ((dqtype & XFS_QMOPT_PQUOTA) && q->qi_pquotaip) {
222 IRELE(q->qi_pquotaip);
223 q->qi_pquotaip = NULL;
224 }
1da177e4 225
8a7b8a89
CH
226out_unlock:
227 mutex_unlock(&q->qi_quotaofflock);
228 return error;
1da177e4
LT
229}
230
5d18898b
CH
231STATIC int
232xfs_qm_scall_trunc_qfile(
233 struct xfs_mount *mp,
234 xfs_ino_t ino)
235{
236 struct xfs_inode *ip;
237 struct xfs_trans *tp;
238 int error;
239
240 if (ino == NULLFSINO)
241 return 0;
242
243 error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
244 if (error)
245 return error;
246
247 xfs_ilock(ip, XFS_IOLOCK_EXCL);
248
249 tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE);
3d3c8b52 250 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0);
5d18898b
CH
251 if (error) {
252 xfs_trans_cancel(tp, 0);
253 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
254 goto out_put;
255 }
256
257 xfs_ilock(ip, XFS_ILOCK_EXCL);
ddc3415a 258 xfs_trans_ijoin(tp, ip, 0);
5d18898b 259
673e8e59 260 ip->i_d.di_size = 0;
673e8e59
CH
261 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
262
263 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
5d18898b
CH
264 if (error) {
265 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
266 XFS_TRANS_ABORT);
267 goto out_unlock;
268 }
269
673e8e59
CH
270 ASSERT(ip->i_d.di_nextents == 0);
271
dcd79a14 272 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
5d18898b
CH
273 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
274
275out_unlock:
276 xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
277out_put:
278 IRELE(ip);
279 return error;
280}
281
fcafb71b 282int
1da177e4
LT
283xfs_qm_scall_trunc_qfiles(
284 xfs_mount_t *mp,
285 uint flags)
286{
88ab0208 287 int error = 0, error2 = 0;
1da177e4 288
62118709 289 if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
8221112b
DC
290 xfs_debug(mp, "%s: flags=%x m_qflags=%x\n",
291 __func__, flags, mp->m_qflags);
1da177e4
LT
292 return XFS_ERROR(EINVAL);
293 }
294
5d18898b
CH
295 if (flags & XFS_DQ_USER)
296 error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
d892d586 297 if (flags & XFS_DQ_GROUP)
5d18898b 298 error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
d892d586
CS
299 if (flags & XFS_DQ_PROJ)
300 error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_pquotino);
1da177e4 301
88ab0208 302 return error ? error : error2;
1da177e4
LT
303}
304
1da177e4
LT
305/*
306 * Switch on (a given) quota enforcement for a filesystem. This takes
307 * effect immediately.
308 * (Switching on quota accounting must be done at mount time.)
309 */
fcafb71b 310int
1da177e4
LT
311xfs_qm_scall_quotaon(
312 xfs_mount_t *mp,
313 uint flags)
314{
315 int error;
1da177e4 316 uint qf;
1da177e4
LT
317 __int64_t sbflags;
318
1da177e4
LT
319 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
320 /*
321 * Switching on quota accounting must be done at mount time.
322 */
1da177e4
LT
323 flags &= ~(XFS_ALL_QUOTA_ACCT);
324
325 sbflags = 0;
326
327 if (flags == 0) {
8221112b
DC
328 xfs_debug(mp, "%s: zero flags, m_qflags=%x\n",
329 __func__, mp->m_qflags);
1da177e4
LT
330 return XFS_ERROR(EINVAL);
331 }
332
333 /* No fs can turn on quotas with a delayed effect */
334 ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
335
336 /*
337 * Can't enforce without accounting. We check the superblock
338 * qflags here instead of m_qflags because rootfs can have
339 * quota acct on ondisk without m_qflags' knowing.
340 */
341 if (((flags & XFS_UQUOTA_ACCT) == 0 &&
83e782e1
CS
342 (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
343 (flags & XFS_UQUOTA_ENFD)) ||
344 ((flags & XFS_GQUOTA_ACCT) == 0 &&
345 (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
346 (flags & XFS_GQUOTA_ENFD)) ||
c8ad20ff 347 ((flags & XFS_PQUOTA_ACCT) == 0 &&
83e782e1
CS
348 (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
349 (flags & XFS_PQUOTA_ENFD))) {
8221112b
DC
350 xfs_debug(mp,
351 "%s: Can't enforce without acct, flags=%x sbflags=%x\n",
352 __func__, flags, mp->m_sb.sb_qflags);
1da177e4
LT
353 return XFS_ERROR(EINVAL);
354 }
355 /*
25985edc 356 * If everything's up to-date incore, then don't waste time.
1da177e4
LT
357 */
358 if ((mp->m_qflags & flags) == flags)
359 return XFS_ERROR(EEXIST);
360
361 /*
362 * Change sb_qflags on disk but not incore mp->qflags
363 * if this is the root filesystem.
364 */
3685c2a1 365 spin_lock(&mp->m_sb_lock);
1da177e4
LT
366 qf = mp->m_sb.sb_qflags;
367 mp->m_sb.sb_qflags = qf | flags;
3685c2a1 368 spin_unlock(&mp->m_sb_lock);
1da177e4
LT
369
370 /*
371 * There's nothing to change if it's the same.
372 */
373 if ((qf & flags) == flags && sbflags == 0)
374 return XFS_ERROR(EEXIST);
375 sbflags |= XFS_SB_QFLAGS;
376
377 if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
378 return (error);
379 /*
380 * If we aren't trying to switch on quota enforcement, we are done.
381 */
382 if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
383 (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
c8ad20ff
NS
384 ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
385 (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
386 ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
387 (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
1da177e4
LT
388 (flags & XFS_ALL_QUOTA_ENFD) == 0)
389 return (0);
390
391 if (! XFS_IS_QUOTA_RUNNING(mp))
392 return XFS_ERROR(ESRCH);
393
394 /*
395 * Switch on quota enforcement in core.
396 */
8a7b8a89 397 mutex_lock(&mp->m_quotainfo->qi_quotaofflock);
1da177e4 398 mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
8a7b8a89 399 mutex_unlock(&mp->m_quotainfo->qi_quotaofflock);
1da177e4
LT
400
401 return (0);
402}
403
404
1da177e4
LT
405/*
406 * Return quota status information, such as uquota-off, enforcements, etc.
407 */
fcafb71b 408int
1da177e4 409xfs_qm_scall_getqstat(
8a7b8a89
CH
410 struct xfs_mount *mp,
411 struct fs_quota_stat *out)
1da177e4 412{
8a7b8a89 413 struct xfs_quotainfo *q = mp->m_quotainfo;
113a5683
CS
414 struct xfs_inode *uip = NULL;
415 struct xfs_inode *gip = NULL;
d892d586 416 struct xfs_inode *pip = NULL;
113a5683
CS
417 bool tempuqip = false;
418 bool tempgqip = false;
d892d586 419 bool temppqip = false;
1da177e4 420
1da177e4
LT
421 memset(out, 0, sizeof(fs_quota_stat_t));
422
423 out->qs_version = FS_QSTAT_VERSION;
62118709 424 if (!xfs_sb_version_hasquota(&mp->m_sb)) {
1da177e4
LT
425 out->qs_uquota.qfs_ino = NULLFSINO;
426 out->qs_gquota.qfs_ino = NULLFSINO;
427 return (0);
428 }
d892d586 429
1da177e4
LT
430 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
431 (XFS_ALL_QUOTA_ACCT|
432 XFS_ALL_QUOTA_ENFD));
8a7b8a89
CH
433 if (q) {
434 uip = q->qi_uquotaip;
435 gip = q->qi_gquotaip;
d892d586 436 pip = q->qi_pquotaip;
1da177e4
LT
437 }
438 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
439 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
7b6259e7 440 0, 0, &uip) == 0)
667a9291 441 tempuqip = true;
1da177e4
LT
442 }
443 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
444 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
7b6259e7 445 0, 0, &gip) == 0)
667a9291 446 tempgqip = true;
1da177e4 447 }
d892d586
CS
448 /*
449 * Q_XGETQSTAT doesn't have room for both group and project quotas.
450 * So, allow the project quota values to be copied out only if
451 * there is no group quota information available.
452 */
453 if (!gip) {
454 if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
455 if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
456 0, 0, &pip) == 0)
457 temppqip = true;
458 }
459 } else
460 pip = NULL;
1da177e4 461 if (uip) {
d892d586 462 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
1da177e4
LT
463 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
464 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
465 if (tempuqip)
43355099 466 IRELE(uip);
1da177e4 467 }
d892d586 468
1da177e4 469 if (gip) {
d892d586 470 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
1da177e4
LT
471 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
472 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
473 if (tempgqip)
43355099 474 IRELE(gip);
1da177e4 475 }
d892d586
CS
476 if (pip) {
477 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
478 out->qs_gquota.qfs_nblks = pip->i_d.di_nblocks;
479 out->qs_gquota.qfs_nextents = pip->i_d.di_nextents;
480 if (temppqip)
481 IRELE(pip);
482 }
8a7b8a89
CH
483 if (q) {
484 out->qs_incoredqs = q->qi_dquots;
485 out->qs_btimelimit = q->qi_btimelimit;
486 out->qs_itimelimit = q->qi_itimelimit;
487 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
488 out->qs_bwarnlimit = q->qi_bwarnlimit;
489 out->qs_iwarnlimit = q->qi_iwarnlimit;
1da177e4 490 }
8a7b8a89 491 return 0;
1da177e4
LT
492}
493
c472b432
CH
494#define XFS_DQ_MASK \
495 (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK)
496
1da177e4
LT
497/*
498 * Adjust quota limits, and start/stop timers accordingly.
499 */
fcafb71b 500int
1da177e4 501xfs_qm_scall_setqlim(
b1366451 502 struct xfs_mount *mp,
1da177e4
LT
503 xfs_dqid_t id,
504 uint type,
505 fs_disk_quota_t *newlim)
506{
8a7b8a89 507 struct xfs_quotainfo *q = mp->m_quotainfo;
b1366451
BF
508 struct xfs_disk_dquot *ddq;
509 struct xfs_dquot *dqp;
510 struct xfs_trans *tp;
1da177e4
LT
511 int error;
512 xfs_qcnt_t hard, soft;
513
c472b432
CH
514 if (newlim->d_fieldmask & ~XFS_DQ_MASK)
515 return EINVAL;
516 if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0)
517 return 0;
1da177e4 518
1da177e4
LT
519 /*
520 * We don't want to race with a quotaoff so take the quotaoff lock.
f648167f
DC
521 * We don't hold an inode lock, so there's nothing else to stop
522 * a quotaoff from happening.
1da177e4 523 */
8a7b8a89 524 mutex_lock(&q->qi_quotaofflock);
1da177e4
LT
525
526 /*
f648167f
DC
527 * Get the dquot (locked) before we start, as we need to do a
528 * transaction to allocate it if it doesn't exist. Once we have the
529 * dquot, unlock it so we can start the next transaction safely. We hold
530 * a reference to the dquot, so it's safe to do this unlock/lock without
531 * it being reclaimed in the mean time.
1da177e4 532 */
f648167f
DC
533 error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp);
534 if (error) {
1da177e4 535 ASSERT(error != ENOENT);
8a7b8a89 536 goto out_unlock;
1da177e4 537 }
f648167f
DC
538 xfs_dqunlock(dqp);
539
540 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
3d3c8b52 541 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_setqlim, 0, 0);
f648167f
DC
542 if (error) {
543 xfs_trans_cancel(tp, 0);
544 goto out_rele;
545 }
546
547 xfs_dqlock(dqp);
1da177e4
LT
548 xfs_trans_dqjoin(tp, dqp);
549 ddq = &dqp->q_core;
550
551 /*
552 * Make sure that hardlimits are >= soft limits before changing.
553 */
554 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
555 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
1149d96a 556 be64_to_cpu(ddq->d_blk_hardlimit);
1da177e4
LT
557 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
558 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
1149d96a 559 be64_to_cpu(ddq->d_blk_softlimit);
1da177e4 560 if (hard == 0 || hard >= soft) {
1149d96a
CH
561 ddq->d_blk_hardlimit = cpu_to_be64(hard);
562 ddq->d_blk_softlimit = cpu_to_be64(soft);
b1366451 563 xfs_dquot_set_prealloc_limits(dqp);
1da177e4 564 if (id == 0) {
8a7b8a89
CH
565 q->qi_bhardlimit = hard;
566 q->qi_bsoftlimit = soft;
1da177e4
LT
567 }
568 } else {
8221112b 569 xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft);
1da177e4
LT
570 }
571 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
572 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
1149d96a 573 be64_to_cpu(ddq->d_rtb_hardlimit);
1da177e4
LT
574 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
575 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
1149d96a 576 be64_to_cpu(ddq->d_rtb_softlimit);
1da177e4 577 if (hard == 0 || hard >= soft) {
1149d96a
CH
578 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
579 ddq->d_rtb_softlimit = cpu_to_be64(soft);
1da177e4 580 if (id == 0) {
8a7b8a89
CH
581 q->qi_rtbhardlimit = hard;
582 q->qi_rtbsoftlimit = soft;
1da177e4
LT
583 }
584 } else {
8221112b 585 xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
1da177e4
LT
586 }
587
588 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
589 (xfs_qcnt_t) newlim->d_ino_hardlimit :
1149d96a 590 be64_to_cpu(ddq->d_ino_hardlimit);
1da177e4
LT
591 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
592 (xfs_qcnt_t) newlim->d_ino_softlimit :
1149d96a 593 be64_to_cpu(ddq->d_ino_softlimit);
1da177e4 594 if (hard == 0 || hard >= soft) {
1149d96a
CH
595 ddq->d_ino_hardlimit = cpu_to_be64(hard);
596 ddq->d_ino_softlimit = cpu_to_be64(soft);
1da177e4 597 if (id == 0) {
8a7b8a89
CH
598 q->qi_ihardlimit = hard;
599 q->qi_isoftlimit = soft;
1da177e4
LT
600 }
601 } else {
8221112b 602 xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft);
1da177e4
LT
603 }
604
754002b4
NS
605 /*
606 * Update warnings counter(s) if requested
607 */
608 if (newlim->d_fieldmask & FS_DQ_BWARNS)
1149d96a 609 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
754002b4 610 if (newlim->d_fieldmask & FS_DQ_IWARNS)
1149d96a 611 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
754002b4 612 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
1149d96a 613 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
754002b4 614
1da177e4
LT
615 if (id == 0) {
616 /*
617 * Timelimits for the super user set the relative time
618 * the other users can be over quota for this file system.
619 * If it is zero a default is used. Ditto for the default
754002b4
NS
620 * soft and hard limit values (already done, above), and
621 * for warnings.
1da177e4
LT
622 */
623 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
8a7b8a89 624 q->qi_btimelimit = newlim->d_btimer;
1149d96a 625 ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
1da177e4
LT
626 }
627 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
8a7b8a89 628 q->qi_itimelimit = newlim->d_itimer;
1149d96a 629 ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
1da177e4
LT
630 }
631 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
8a7b8a89 632 q->qi_rtbtimelimit = newlim->d_rtbtimer;
1149d96a 633 ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
1da177e4 634 }
754002b4 635 if (newlim->d_fieldmask & FS_DQ_BWARNS)
8a7b8a89 636 q->qi_bwarnlimit = newlim->d_bwarns;
754002b4 637 if (newlim->d_fieldmask & FS_DQ_IWARNS)
8a7b8a89 638 q->qi_iwarnlimit = newlim->d_iwarns;
754002b4 639 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
8a7b8a89 640 q->qi_rtbwarnlimit = newlim->d_rtbwarns;
754002b4 641 } else {
1da177e4
LT
642 /*
643 * If the user is now over quota, start the timelimit.
644 * The user will not be 'warned'.
645 * Note that we keep the timers ticking, whether enforcement
646 * is on or off. We don't really want to bother with iterating
647 * over all ondisk dquots and turning the timers on/off.
648 */
649 xfs_qm_adjust_dqtimers(mp, ddq);
650 }
651 dqp->dq_flags |= XFS_DQ_DIRTY;
652 xfs_trans_log_dquot(tp, dqp);
653
e5720eec 654 error = xfs_trans_commit(tp, 0);
1da177e4 655
f648167f
DC
656out_rele:
657 xfs_qm_dqrele(dqp);
658out_unlock:
8a7b8a89 659 mutex_unlock(&q->qi_quotaofflock);
e5720eec 660 return error;
1da177e4
LT
661}
662
1da177e4
LT
663STATIC int
664xfs_qm_log_quotaoff_end(
665 xfs_mount_t *mp,
666 xfs_qoff_logitem_t *startqoff,
667 uint flags)
668{
c8ad20ff 669 xfs_trans_t *tp;
1da177e4 670 int error;
c8ad20ff 671 xfs_qoff_logitem_t *qoffi;
1da177e4
LT
672
673 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
674
3d3c8b52 675 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_equotaoff, 0, 0);
762d7ba6 676 if (error) {
1da177e4
LT
677 xfs_trans_cancel(tp, 0);
678 return (error);
679 }
680
681 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
682 flags & XFS_ALL_QUOTA_ACCT);
683 xfs_trans_log_quotaoff_item(tp, qoffi);
684
685 /*
686 * We have to make sure that the transaction is secure on disk before we
687 * return and actually stop quota accounting. So, make it synchronous.
688 * We don't care about quotoff's performance.
689 */
690 xfs_trans_set_sync(tp);
1c72bf90 691 error = xfs_trans_commit(tp, 0);
1da177e4
LT
692 return (error);
693}
694
695
696STATIC int
697xfs_qm_log_quotaoff(
698 xfs_mount_t *mp,
699 xfs_qoff_logitem_t **qoffstartp,
700 uint flags)
701{
702 xfs_trans_t *tp;
703 int error;
1da177e4
LT
704 xfs_qoff_logitem_t *qoffi=NULL;
705 uint oldsbqflag=0;
706
707 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
3d3c8b52 708 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_quotaoff, 0, 0);
a1bd9557 709 if (error)
1da177e4 710 goto error0;
1da177e4
LT
711
712 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
713 xfs_trans_log_quotaoff_item(tp, qoffi);
714
3685c2a1 715 spin_lock(&mp->m_sb_lock);
1da177e4
LT
716 oldsbqflag = mp->m_sb.sb_qflags;
717 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
3685c2a1 718 spin_unlock(&mp->m_sb_lock);
1da177e4
LT
719
720 xfs_mod_sb(tp, XFS_SB_QFLAGS);
721
722 /*
723 * We have to make sure that the transaction is secure on disk before we
724 * return and actually stop quota accounting. So, make it synchronous.
725 * We don't care about quotoff's performance.
726 */
727 xfs_trans_set_sync(tp);
1c72bf90 728 error = xfs_trans_commit(tp, 0);
1da177e4
LT
729
730error0:
731 if (error) {
732 xfs_trans_cancel(tp, 0);
733 /*
734 * No one else is modifying sb_qflags, so this is OK.
735 * We still hold the quotaofflock.
736 */
3685c2a1 737 spin_lock(&mp->m_sb_lock);
1da177e4 738 mp->m_sb.sb_qflags = oldsbqflag;
3685c2a1 739 spin_unlock(&mp->m_sb_lock);
1da177e4
LT
740 }
741 *qoffstartp = qoffi;
742 return (error);
743}
744
745
18535a7e
CH
746int
747xfs_qm_scall_getquota(
748 struct xfs_mount *mp,
749 xfs_dqid_t id,
750 uint type,
1da177e4
LT
751 struct fs_disk_quota *dst)
752{
18535a7e
CH
753 struct xfs_dquot *dqp;
754 int error;
755
756 /*
757 * Try to get the dquot. We don't want it allocated on disk, so
758 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
759 * exist, we'll get ENOENT back.
760 */
761 error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp);
762 if (error)
763 return error;
764
765 /*
766 * If everything's NULL, this dquot doesn't quite exist as far as
767 * our utility programs are concerned.
768 */
769 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
770 error = XFS_ERROR(ENOENT);
771 goto out_put;
772 }
773
1da177e4 774 memset(dst, 0, sizeof(*dst));
18535a7e
CH
775 dst->d_version = FS_DQUOT_VERSION;
776 dst->d_flags = xfs_qm_export_qtype_flags(dqp->q_core.d_flags);
777 dst->d_id = be32_to_cpu(dqp->q_core.d_id);
1149d96a 778 dst->d_blk_hardlimit =
18535a7e 779 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit));
1149d96a 780 dst->d_blk_softlimit =
18535a7e
CH
781 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit));
782 dst->d_ino_hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
783 dst->d_ino_softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
89605011
CH
784 dst->d_bcount = XFS_FSB_TO_BB(mp, dqp->q_res_bcount);
785 dst->d_icount = dqp->q_res_icount;
18535a7e
CH
786 dst->d_btimer = be32_to_cpu(dqp->q_core.d_btimer);
787 dst->d_itimer = be32_to_cpu(dqp->q_core.d_itimer);
788 dst->d_iwarns = be16_to_cpu(dqp->q_core.d_iwarns);
789 dst->d_bwarns = be16_to_cpu(dqp->q_core.d_bwarns);
1149d96a 790 dst->d_rtb_hardlimit =
18535a7e 791 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit));
1149d96a 792 dst->d_rtb_softlimit =
18535a7e 793 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit));
89605011 794 dst->d_rtbcount = XFS_FSB_TO_BB(mp, dqp->q_res_rtbcount);
18535a7e
CH
795 dst->d_rtbtimer = be32_to_cpu(dqp->q_core.d_rtbtimer);
796 dst->d_rtbwarns = be16_to_cpu(dqp->q_core.d_rtbwarns);
1da177e4
LT
797
798 /*
799 * Internally, we don't reset all the timers when quota enforcement
c41564b5 800 * gets turned off. No need to confuse the user level code,
1da177e4
LT
801 * so return zeroes in that case.
802 */
83e782e1
CS
803 if ((!XFS_IS_UQUOTA_ENFORCED(mp) &&
804 dqp->q_core.d_flags == XFS_DQ_USER) ||
805 (!XFS_IS_GQUOTA_ENFORCED(mp) &&
806 dqp->q_core.d_flags == XFS_DQ_GROUP) ||
807 (!XFS_IS_PQUOTA_ENFORCED(mp) &&
808 dqp->q_core.d_flags == XFS_DQ_PROJ)) {
1da177e4
LT
809 dst->d_btimer = 0;
810 dst->d_itimer = 0;
811 dst->d_rtbtimer = 0;
812 }
813
814#ifdef DEBUG
ade7ce31 815 if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) ||
83e782e1
CS
816 (XFS_IS_GQUOTA_ENFORCED(mp) && dst->d_flags == FS_GROUP_QUOTA) ||
817 (XFS_IS_PQUOTA_ENFORCED(mp) && dst->d_flags == FS_PROJ_QUOTA)) &&
e6d29426 818 dst->d_id != 0) {
f7555032 819 if ((dst->d_bcount > dst->d_blk_softlimit) &&
1da177e4
LT
820 (dst->d_blk_softlimit > 0)) {
821 ASSERT(dst->d_btimer != 0);
822 }
f7555032 823 if ((dst->d_icount > dst->d_ino_softlimit) &&
1da177e4
LT
824 (dst->d_ino_softlimit > 0)) {
825 ASSERT(dst->d_itimer != 0);
826 }
827 }
828#endif
18535a7e
CH
829out_put:
830 xfs_qm_dqput(dqp);
831 return error;
1da177e4
LT
832}
833
1da177e4
LT
834STATIC uint
835xfs_qm_export_qtype_flags(
836 uint flags)
837{
838 /*
c8ad20ff 839 * Can't be more than one, or none.
1da177e4 840 */
ade7ce31
CH
841 ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) !=
842 (FS_PROJ_QUOTA | FS_USER_QUOTA));
843 ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) !=
844 (FS_PROJ_QUOTA | FS_GROUP_QUOTA));
845 ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) !=
846 (FS_USER_QUOTA | FS_GROUP_QUOTA));
847 ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0);
1da177e4
LT
848
849 return (flags & XFS_DQ_USER) ?
ade7ce31
CH
850 FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
851 FS_PROJ_QUOTA : FS_GROUP_QUOTA;
1da177e4
LT
852}
853
1da177e4
LT
854STATIC uint
855xfs_qm_export_flags(
856 uint flags)
857{
858 uint uflags;
859
860 uflags = 0;
861 if (flags & XFS_UQUOTA_ACCT)
ade7ce31 862 uflags |= FS_QUOTA_UDQ_ACCT;
1da177e4 863 if (flags & XFS_GQUOTA_ACCT)
ade7ce31 864 uflags |= FS_QUOTA_GDQ_ACCT;
83e782e1
CS
865 if (flags & XFS_PQUOTA_ACCT)
866 uflags |= FS_QUOTA_PDQ_ACCT;
1da177e4 867 if (flags & XFS_UQUOTA_ENFD)
ade7ce31 868 uflags |= FS_QUOTA_UDQ_ENFD;
83e782e1
CS
869 if (flags & XFS_GQUOTA_ENFD)
870 uflags |= FS_QUOTA_GDQ_ENFD;
871 if (flags & XFS_PQUOTA_ENFD)
872 uflags |= FS_QUOTA_PDQ_ENFD;
1da177e4
LT
873 return (uflags);
874}
875
876
fe588ed3
CH
877STATIC int
878xfs_dqrele_inode(
879 struct xfs_inode *ip,
880 struct xfs_perag *pag,
a454f742
BF
881 int flags,
882 void *args)
1da177e4 883{
fe588ed3 884 /* skip quota inodes */
8a7b8a89 885 if (ip == ip->i_mount->m_quotainfo->qi_uquotaip ||
92f8ff73
CS
886 ip == ip->i_mount->m_quotainfo->qi_gquotaip ||
887 ip == ip->i_mount->m_quotainfo->qi_pquotaip) {
fe588ed3
CH
888 ASSERT(ip->i_udquot == NULL);
889 ASSERT(ip->i_gdquot == NULL);
92f8ff73 890 ASSERT(ip->i_pdquot == NULL);
fe588ed3
CH
891 return 0;
892 }
cb4f0d1d 893
fe588ed3
CH
894 xfs_ilock(ip, XFS_ILOCK_EXCL);
895 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
896 xfs_qm_dqrele(ip->i_udquot);
897 ip->i_udquot = NULL;
898 }
92f8ff73 899 if ((flags & XFS_GQUOTA_ACCT) && ip->i_gdquot) {
fe588ed3
CH
900 xfs_qm_dqrele(ip->i_gdquot);
901 ip->i_gdquot = NULL;
902 }
92f8ff73
CS
903 if ((flags & XFS_PQUOTA_ACCT) && ip->i_pdquot) {
904 xfs_qm_dqrele(ip->i_pdquot);
905 ip->i_pdquot = NULL;
906 }
f2d67614 907 xfs_iunlock(ip, XFS_ILOCK_EXCL);
fe588ed3 908 return 0;
5b4d89ae
DC
909}
910
fe588ed3 911
5b4d89ae
DC
912/*
913 * Go thru all the inodes in the file system, releasing their dquots.
fe588ed3 914 *
5b4d89ae 915 * Note that the mount structure gets modified to indicate that quotas are off
fe588ed3 916 * AFTER this, in the case of quotaoff.
5b4d89ae
DC
917 */
918void
919xfs_qm_dqrele_all_inodes(
920 struct xfs_mount *mp,
921 uint flags)
922{
5b4d89ae 923 ASSERT(mp->m_quotainfo);
a454f742 924 xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags, NULL);
1da177e4 925}