]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - fs/xfs/xfs_qm_syscalls.c
Merge branch 'xfs-for-3.9'
[mirror_ubuntu-bionic-kernel.git] / fs / xfs / xfs_qm_syscalls.c
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"
a844f451 23#include "xfs_bit.h"
1da177e4
LT
24#include "xfs_log.h"
25#include "xfs_trans.h"
26#include "xfs_sb.h"
a844f451 27#include "xfs_ag.h"
1da177e4 28#include "xfs_alloc.h"
1da177e4
LT
29#include "xfs_quota.h"
30#include "xfs_mount.h"
1da177e4 31#include "xfs_bmap_btree.h"
1da177e4 32#include "xfs_inode.h"
673e8e59 33#include "xfs_inode_item.h"
a844f451 34#include "xfs_itable.h"
1da177e4 35#include "xfs_bmap.h"
1da177e4
LT
36#include "xfs_rtalloc.h"
37#include "xfs_error.h"
1da177e4
LT
38#include "xfs_attr.h"
39#include "xfs_buf_item.h"
40#include "xfs_utils.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;
c8ad20ff 120 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
1da177e4 121 inactivate_flags |= XFS_GQUOTA_ACTIVE;
c8ad20ff
NS
122 } else if (flags & XFS_PQUOTA_ACCT) {
123 dqtype |= XFS_QMOPT_PQUOTA;
124 flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
125 inactivate_flags |= XFS_PQUOTA_ACTIVE;
1da177e4
LT
126 }
127
128 /*
129 * Nothing to do? Don't complain. This happens when we're just
130 * turning off quota enforcement.
131 */
8a7b8a89
CH
132 if ((mp->m_qflags & flags) == 0)
133 goto out_unlock;
1da177e4
LT
134
135 /*
136 * Write the LI_QUOTAOFF log record, and do SB changes atomically,
cb6edc26
DC
137 * and synchronously. If we fail to write, we should abort the
138 * operation as it cannot be recovered safely if we crash.
1da177e4 139 */
cb6edc26
DC
140 error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
141 if (error)
8a7b8a89 142 goto out_unlock;
1da177e4
LT
143
144 /*
145 * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
146 * to take care of the race between dqget and quotaoff. We don't take
147 * any special locks to reset these bits. All processes need to check
148 * these bits *after* taking inode lock(s) to see if the particular
149 * quota type is in the process of being turned off. If *ACTIVE, it is
150 * guaranteed that all dquot structures and all quotainode ptrs will all
151 * stay valid as long as that inode is kept locked.
152 *
153 * There is no turning back after this.
154 */
155 mp->m_qflags &= ~inactivate_flags;
156
157 /*
158 * Give back all the dquot reference(s) held by inodes.
159 * Here we go thru every single incore inode in this file system, and
160 * do a dqrele on the i_udquot/i_gdquot that it may have.
161 * Essentially, as long as somebody has an inode locked, this guarantees
162 * that quotas will not be turned off. This is handy because in a
163 * transaction once we lock the inode(s) and check for quotaon, we can
164 * depend on the quota inodes (and other things) being valid as long as
165 * we keep the lock(s).
166 */
167 xfs_qm_dqrele_all_inodes(mp, flags);
168
169 /*
170 * Next we make the changes in the quota flag in the mount struct.
171 * This isn't protected by a particular lock directly, because we
25985edc 172 * don't want to take a mrlock every time we depend on quotas being on.
1da177e4 173 */
b84a3a96 174 mp->m_qflags &= ~flags;
1da177e4
LT
175
176 /*
177 * Go through all the dquots of this file system and purge them,
b84a3a96 178 * according to what was turned off.
1da177e4 179 */
b84a3a96 180 xfs_qm_dqpurge_all(mp, dqtype);
1da177e4
LT
181
182 /*
183 * Transactions that had started before ACTIVE state bit was cleared
184 * could have logged many dquots, so they'd have higher LSNs than
185 * the first QUOTAOFF log record does. If we happen to crash when
186 * the tail of the log has gone past the QUOTAOFF record, but
187 * before the last dquot modification, those dquots __will__
188 * recover, and that's not good.
189 *
190 * So, we have QUOTAOFF start and end logitems; the start
191 * logitem won't get overwritten until the end logitem appears...
192 */
cb6edc26
DC
193 error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
194 if (error) {
195 /* We're screwed now. Shutdown is the only option. */
196 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
8a7b8a89 197 goto out_unlock;
cb6edc26 198 }
1da177e4
LT
199
200 /*
201 * If quotas is completely disabled, close shop.
202 */
c8ad20ff
NS
203 if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
204 ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
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 }
8a7b8a89
CH
217 if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && q->qi_gquotaip) {
218 IRELE(q->qi_gquotaip);
219 q->qi_gquotaip = NULL;
1da177e4 220 }
1da177e4 221
8a7b8a89
CH
222out_unlock:
223 mutex_unlock(&q->qi_quotaofflock);
224 return error;
1da177e4
LT
225}
226
5d18898b
CH
227STATIC int
228xfs_qm_scall_trunc_qfile(
229 struct xfs_mount *mp,
230 xfs_ino_t ino)
231{
232 struct xfs_inode *ip;
233 struct xfs_trans *tp;
234 int error;
235
236 if (ino == NULLFSINO)
237 return 0;
238
239 error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
240 if (error)
241 return error;
242
243 xfs_ilock(ip, XFS_IOLOCK_EXCL);
244
245 tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE);
246 error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
247 XFS_TRANS_PERM_LOG_RES,
248 XFS_ITRUNCATE_LOG_COUNT);
249 if (error) {
250 xfs_trans_cancel(tp, 0);
251 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
252 goto out_put;
253 }
254
255 xfs_ilock(ip, XFS_ILOCK_EXCL);
ddc3415a 256 xfs_trans_ijoin(tp, ip, 0);
5d18898b 257
673e8e59 258 ip->i_d.di_size = 0;
673e8e59
CH
259 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
260
261 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
5d18898b
CH
262 if (error) {
263 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
264 XFS_TRANS_ABORT);
265 goto out_unlock;
266 }
267
673e8e59
CH
268 ASSERT(ip->i_d.di_nextents == 0);
269
dcd79a14 270 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
5d18898b
CH
271 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
272
273out_unlock:
274 xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
275out_put:
276 IRELE(ip);
277 return error;
278}
279
fcafb71b 280int
1da177e4
LT
281xfs_qm_scall_trunc_qfiles(
282 xfs_mount_t *mp,
283 uint flags)
284{
88ab0208 285 int error = 0, error2 = 0;
1da177e4 286
62118709 287 if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
8221112b
DC
288 xfs_debug(mp, "%s: flags=%x m_qflags=%x\n",
289 __func__, flags, mp->m_qflags);
1da177e4
LT
290 return XFS_ERROR(EINVAL);
291 }
292
5d18898b
CH
293 if (flags & XFS_DQ_USER)
294 error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
295 if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ))
296 error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
1da177e4 297
88ab0208 298 return error ? error : error2;
1da177e4
LT
299}
300
1da177e4
LT
301/*
302 * Switch on (a given) quota enforcement for a filesystem. This takes
303 * effect immediately.
304 * (Switching on quota accounting must be done at mount time.)
305 */
fcafb71b 306int
1da177e4
LT
307xfs_qm_scall_quotaon(
308 xfs_mount_t *mp,
309 uint flags)
310{
311 int error;
1da177e4 312 uint qf;
1da177e4
LT
313 __int64_t sbflags;
314
1da177e4
LT
315 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
316 /*
317 * Switching on quota accounting must be done at mount time.
318 */
1da177e4
LT
319 flags &= ~(XFS_ALL_QUOTA_ACCT);
320
321 sbflags = 0;
322
323 if (flags == 0) {
8221112b
DC
324 xfs_debug(mp, "%s: zero flags, m_qflags=%x\n",
325 __func__, mp->m_qflags);
1da177e4
LT
326 return XFS_ERROR(EINVAL);
327 }
328
329 /* No fs can turn on quotas with a delayed effect */
330 ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
331
332 /*
333 * Can't enforce without accounting. We check the superblock
334 * qflags here instead of m_qflags because rootfs can have
335 * quota acct on ondisk without m_qflags' knowing.
336 */
337 if (((flags & XFS_UQUOTA_ACCT) == 0 &&
338 (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
339 (flags & XFS_UQUOTA_ENFD))
340 ||
c8ad20ff
NS
341 ((flags & XFS_PQUOTA_ACCT) == 0 &&
342 (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
424ea91b 343 (flags & XFS_GQUOTA_ACCT) == 0 &&
1da177e4 344 (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
c8ad20ff 345 (flags & XFS_OQUOTA_ENFD))) {
8221112b
DC
346 xfs_debug(mp,
347 "%s: Can't enforce without acct, flags=%x sbflags=%x\n",
348 __func__, flags, mp->m_sb.sb_qflags);
1da177e4
LT
349 return XFS_ERROR(EINVAL);
350 }
351 /*
25985edc 352 * If everything's up to-date incore, then don't waste time.
1da177e4
LT
353 */
354 if ((mp->m_qflags & flags) == flags)
355 return XFS_ERROR(EEXIST);
356
357 /*
358 * Change sb_qflags on disk but not incore mp->qflags
359 * if this is the root filesystem.
360 */
3685c2a1 361 spin_lock(&mp->m_sb_lock);
1da177e4
LT
362 qf = mp->m_sb.sb_qflags;
363 mp->m_sb.sb_qflags = qf | flags;
3685c2a1 364 spin_unlock(&mp->m_sb_lock);
1da177e4
LT
365
366 /*
367 * There's nothing to change if it's the same.
368 */
369 if ((qf & flags) == flags && sbflags == 0)
370 return XFS_ERROR(EEXIST);
371 sbflags |= XFS_SB_QFLAGS;
372
373 if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
374 return (error);
375 /*
376 * If we aren't trying to switch on quota enforcement, we are done.
377 */
378 if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
379 (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
c8ad20ff
NS
380 ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
381 (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
382 ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
383 (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
1da177e4
LT
384 (flags & XFS_ALL_QUOTA_ENFD) == 0)
385 return (0);
386
387 if (! XFS_IS_QUOTA_RUNNING(mp))
388 return XFS_ERROR(ESRCH);
389
390 /*
391 * Switch on quota enforcement in core.
392 */
8a7b8a89 393 mutex_lock(&mp->m_quotainfo->qi_quotaofflock);
1da177e4 394 mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
8a7b8a89 395 mutex_unlock(&mp->m_quotainfo->qi_quotaofflock);
1da177e4
LT
396
397 return (0);
398}
399
400
1da177e4
LT
401/*
402 * Return quota status information, such as uquota-off, enforcements, etc.
403 */
fcafb71b 404int
1da177e4 405xfs_qm_scall_getqstat(
8a7b8a89
CH
406 struct xfs_mount *mp,
407 struct fs_quota_stat *out)
1da177e4 408{
8a7b8a89
CH
409 struct xfs_quotainfo *q = mp->m_quotainfo;
410 struct xfs_inode *uip, *gip;
411 boolean_t tempuqip, tempgqip;
1da177e4
LT
412
413 uip = gip = NULL;
414 tempuqip = tempgqip = B_FALSE;
415 memset(out, 0, sizeof(fs_quota_stat_t));
416
417 out->qs_version = FS_QSTAT_VERSION;
62118709 418 if (!xfs_sb_version_hasquota(&mp->m_sb)) {
1da177e4
LT
419 out->qs_uquota.qfs_ino = NULLFSINO;
420 out->qs_gquota.qfs_ino = NULLFSINO;
421 return (0);
422 }
423 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
424 (XFS_ALL_QUOTA_ACCT|
425 XFS_ALL_QUOTA_ENFD));
426 out->qs_pad = 0;
427 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
428 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
429
8a7b8a89
CH
430 if (q) {
431 uip = q->qi_uquotaip;
432 gip = q->qi_gquotaip;
1da177e4
LT
433 }
434 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
435 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
7b6259e7 436 0, 0, &uip) == 0)
1da177e4
LT
437 tempuqip = B_TRUE;
438 }
439 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
440 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
7b6259e7 441 0, 0, &gip) == 0)
1da177e4
LT
442 tempgqip = B_TRUE;
443 }
444 if (uip) {
445 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
446 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
447 if (tempuqip)
43355099 448 IRELE(uip);
1da177e4
LT
449 }
450 if (gip) {
451 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
452 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
453 if (tempgqip)
43355099 454 IRELE(gip);
1da177e4 455 }
8a7b8a89
CH
456 if (q) {
457 out->qs_incoredqs = q->qi_dquots;
458 out->qs_btimelimit = q->qi_btimelimit;
459 out->qs_itimelimit = q->qi_itimelimit;
460 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
461 out->qs_bwarnlimit = q->qi_bwarnlimit;
462 out->qs_iwarnlimit = q->qi_iwarnlimit;
1da177e4 463 }
8a7b8a89 464 return 0;
1da177e4
LT
465}
466
c472b432
CH
467#define XFS_DQ_MASK \
468 (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK)
469
1da177e4
LT
470/*
471 * Adjust quota limits, and start/stop timers accordingly.
472 */
fcafb71b 473int
1da177e4
LT
474xfs_qm_scall_setqlim(
475 xfs_mount_t *mp,
476 xfs_dqid_t id,
477 uint type,
478 fs_disk_quota_t *newlim)
479{
8a7b8a89 480 struct xfs_quotainfo *q = mp->m_quotainfo;
1da177e4
LT
481 xfs_disk_dquot_t *ddq;
482 xfs_dquot_t *dqp;
483 xfs_trans_t *tp;
484 int error;
485 xfs_qcnt_t hard, soft;
486
c472b432
CH
487 if (newlim->d_fieldmask & ~XFS_DQ_MASK)
488 return EINVAL;
489 if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0)
490 return 0;
1da177e4
LT
491
492 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
493 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128,
494 0, 0, XFS_DEFAULT_LOG_COUNT))) {
495 xfs_trans_cancel(tp, 0);
496 return (error);
497 }
498
499 /*
500 * We don't want to race with a quotaoff so take the quotaoff lock.
501 * (We don't hold an inode lock, so there's nothing else to stop
502 * a quotaoff from happening). (XXXThis doesn't currently happen
503 * because we take the vfslock before calling xfs_qm_sysent).
504 */
8a7b8a89 505 mutex_lock(&q->qi_quotaofflock);
1da177e4
LT
506
507 /*
508 * Get the dquot (locked), and join it to the transaction.
509 * Allocate the dquot if this doesn't exist.
510 */
511 if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) {
512 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
1da177e4 513 ASSERT(error != ENOENT);
8a7b8a89 514 goto out_unlock;
1da177e4 515 }
1da177e4
LT
516 xfs_trans_dqjoin(tp, dqp);
517 ddq = &dqp->q_core;
518
519 /*
520 * Make sure that hardlimits are >= soft limits before changing.
521 */
522 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
523 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
1149d96a 524 be64_to_cpu(ddq->d_blk_hardlimit);
1da177e4
LT
525 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
526 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
1149d96a 527 be64_to_cpu(ddq->d_blk_softlimit);
1da177e4 528 if (hard == 0 || hard >= soft) {
1149d96a
CH
529 ddq->d_blk_hardlimit = cpu_to_be64(hard);
530 ddq->d_blk_softlimit = cpu_to_be64(soft);
1da177e4 531 if (id == 0) {
8a7b8a89
CH
532 q->qi_bhardlimit = hard;
533 q->qi_bsoftlimit = soft;
1da177e4
LT
534 }
535 } else {
8221112b 536 xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft);
1da177e4
LT
537 }
538 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
539 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
1149d96a 540 be64_to_cpu(ddq->d_rtb_hardlimit);
1da177e4
LT
541 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
542 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
1149d96a 543 be64_to_cpu(ddq->d_rtb_softlimit);
1da177e4 544 if (hard == 0 || hard >= soft) {
1149d96a
CH
545 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
546 ddq->d_rtb_softlimit = cpu_to_be64(soft);
1da177e4 547 if (id == 0) {
8a7b8a89
CH
548 q->qi_rtbhardlimit = hard;
549 q->qi_rtbsoftlimit = soft;
1da177e4
LT
550 }
551 } else {
8221112b 552 xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
1da177e4
LT
553 }
554
555 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
556 (xfs_qcnt_t) newlim->d_ino_hardlimit :
1149d96a 557 be64_to_cpu(ddq->d_ino_hardlimit);
1da177e4
LT
558 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
559 (xfs_qcnt_t) newlim->d_ino_softlimit :
1149d96a 560 be64_to_cpu(ddq->d_ino_softlimit);
1da177e4 561 if (hard == 0 || hard >= soft) {
1149d96a
CH
562 ddq->d_ino_hardlimit = cpu_to_be64(hard);
563 ddq->d_ino_softlimit = cpu_to_be64(soft);
1da177e4 564 if (id == 0) {
8a7b8a89
CH
565 q->qi_ihardlimit = hard;
566 q->qi_isoftlimit = soft;
1da177e4
LT
567 }
568 } else {
8221112b 569 xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft);
1da177e4
LT
570 }
571
754002b4
NS
572 /*
573 * Update warnings counter(s) if requested
574 */
575 if (newlim->d_fieldmask & FS_DQ_BWARNS)
1149d96a 576 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
754002b4 577 if (newlim->d_fieldmask & FS_DQ_IWARNS)
1149d96a 578 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
754002b4 579 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
1149d96a 580 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
754002b4 581
1da177e4
LT
582 if (id == 0) {
583 /*
584 * Timelimits for the super user set the relative time
585 * the other users can be over quota for this file system.
586 * If it is zero a default is used. Ditto for the default
754002b4
NS
587 * soft and hard limit values (already done, above), and
588 * for warnings.
1da177e4
LT
589 */
590 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
8a7b8a89 591 q->qi_btimelimit = newlim->d_btimer;
1149d96a 592 ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
1da177e4
LT
593 }
594 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
8a7b8a89 595 q->qi_itimelimit = newlim->d_itimer;
1149d96a 596 ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
1da177e4
LT
597 }
598 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
8a7b8a89 599 q->qi_rtbtimelimit = newlim->d_rtbtimer;
1149d96a 600 ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
1da177e4 601 }
754002b4 602 if (newlim->d_fieldmask & FS_DQ_BWARNS)
8a7b8a89 603 q->qi_bwarnlimit = newlim->d_bwarns;
754002b4 604 if (newlim->d_fieldmask & FS_DQ_IWARNS)
8a7b8a89 605 q->qi_iwarnlimit = newlim->d_iwarns;
754002b4 606 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
8a7b8a89 607 q->qi_rtbwarnlimit = newlim->d_rtbwarns;
754002b4 608 } else {
1da177e4
LT
609 /*
610 * If the user is now over quota, start the timelimit.
611 * The user will not be 'warned'.
612 * Note that we keep the timers ticking, whether enforcement
613 * is on or off. We don't really want to bother with iterating
614 * over all ondisk dquots and turning the timers on/off.
615 */
616 xfs_qm_adjust_dqtimers(mp, ddq);
617 }
618 dqp->dq_flags |= XFS_DQ_DIRTY;
619 xfs_trans_log_dquot(tp, dqp);
620
e5720eec 621 error = xfs_trans_commit(tp, 0);
1da177e4 622 xfs_qm_dqrele(dqp);
1da177e4 623
8a7b8a89
CH
624 out_unlock:
625 mutex_unlock(&q->qi_quotaofflock);
e5720eec 626 return error;
1da177e4
LT
627}
628
1da177e4
LT
629STATIC int
630xfs_qm_log_quotaoff_end(
631 xfs_mount_t *mp,
632 xfs_qoff_logitem_t *startqoff,
633 uint flags)
634{
c8ad20ff 635 xfs_trans_t *tp;
1da177e4 636 int error;
c8ad20ff 637 xfs_qoff_logitem_t *qoffi;
1da177e4
LT
638
639 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
640
641 if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2,
642 0, 0, XFS_DEFAULT_LOG_COUNT))) {
643 xfs_trans_cancel(tp, 0);
644 return (error);
645 }
646
647 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
648 flags & XFS_ALL_QUOTA_ACCT);
649 xfs_trans_log_quotaoff_item(tp, qoffi);
650
651 /*
652 * We have to make sure that the transaction is secure on disk before we
653 * return and actually stop quota accounting. So, make it synchronous.
654 * We don't care about quotoff's performance.
655 */
656 xfs_trans_set_sync(tp);
1c72bf90 657 error = xfs_trans_commit(tp, 0);
1da177e4
LT
658 return (error);
659}
660
661
662STATIC int
663xfs_qm_log_quotaoff(
664 xfs_mount_t *mp,
665 xfs_qoff_logitem_t **qoffstartp,
666 uint flags)
667{
668 xfs_trans_t *tp;
669 int error;
1da177e4
LT
670 xfs_qoff_logitem_t *qoffi=NULL;
671 uint oldsbqflag=0;
672
673 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
674 if ((error = xfs_trans_reserve(tp, 0,
675 sizeof(xfs_qoff_logitem_t) * 2 +
676 mp->m_sb.sb_sectsize + 128,
677 0,
678 0,
679 XFS_DEFAULT_LOG_COUNT))) {
680 goto error0;
681 }
682
683 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
684 xfs_trans_log_quotaoff_item(tp, qoffi);
685
3685c2a1 686 spin_lock(&mp->m_sb_lock);
1da177e4
LT
687 oldsbqflag = mp->m_sb.sb_qflags;
688 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
3685c2a1 689 spin_unlock(&mp->m_sb_lock);
1da177e4
LT
690
691 xfs_mod_sb(tp, XFS_SB_QFLAGS);
692
693 /*
694 * We have to make sure that the transaction is secure on disk before we
695 * return and actually stop quota accounting. So, make it synchronous.
696 * We don't care about quotoff's performance.
697 */
698 xfs_trans_set_sync(tp);
1c72bf90 699 error = xfs_trans_commit(tp, 0);
1da177e4
LT
700
701error0:
702 if (error) {
703 xfs_trans_cancel(tp, 0);
704 /*
705 * No one else is modifying sb_qflags, so this is OK.
706 * We still hold the quotaofflock.
707 */
3685c2a1 708 spin_lock(&mp->m_sb_lock);
1da177e4 709 mp->m_sb.sb_qflags = oldsbqflag;
3685c2a1 710 spin_unlock(&mp->m_sb_lock);
1da177e4
LT
711 }
712 *qoffstartp = qoffi;
713 return (error);
714}
715
716
18535a7e
CH
717int
718xfs_qm_scall_getquota(
719 struct xfs_mount *mp,
720 xfs_dqid_t id,
721 uint type,
1da177e4
LT
722 struct fs_disk_quota *dst)
723{
18535a7e
CH
724 struct xfs_dquot *dqp;
725 int error;
726
727 /*
728 * Try to get the dquot. We don't want it allocated on disk, so
729 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
730 * exist, we'll get ENOENT back.
731 */
732 error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp);
733 if (error)
734 return error;
735
736 /*
737 * If everything's NULL, this dquot doesn't quite exist as far as
738 * our utility programs are concerned.
739 */
740 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
741 error = XFS_ERROR(ENOENT);
742 goto out_put;
743 }
744
1da177e4 745 memset(dst, 0, sizeof(*dst));
18535a7e
CH
746 dst->d_version = FS_DQUOT_VERSION;
747 dst->d_flags = xfs_qm_export_qtype_flags(dqp->q_core.d_flags);
748 dst->d_id = be32_to_cpu(dqp->q_core.d_id);
1149d96a 749 dst->d_blk_hardlimit =
18535a7e 750 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit));
1149d96a 751 dst->d_blk_softlimit =
18535a7e
CH
752 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit));
753 dst->d_ino_hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
754 dst->d_ino_softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
89605011
CH
755 dst->d_bcount = XFS_FSB_TO_BB(mp, dqp->q_res_bcount);
756 dst->d_icount = dqp->q_res_icount;
18535a7e
CH
757 dst->d_btimer = be32_to_cpu(dqp->q_core.d_btimer);
758 dst->d_itimer = be32_to_cpu(dqp->q_core.d_itimer);
759 dst->d_iwarns = be16_to_cpu(dqp->q_core.d_iwarns);
760 dst->d_bwarns = be16_to_cpu(dqp->q_core.d_bwarns);
1149d96a 761 dst->d_rtb_hardlimit =
18535a7e 762 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit));
1149d96a 763 dst->d_rtb_softlimit =
18535a7e 764 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit));
89605011 765 dst->d_rtbcount = XFS_FSB_TO_BB(mp, dqp->q_res_rtbcount);
18535a7e
CH
766 dst->d_rtbtimer = be32_to_cpu(dqp->q_core.d_rtbtimer);
767 dst->d_rtbwarns = be16_to_cpu(dqp->q_core.d_rtbwarns);
1da177e4
LT
768
769 /*
770 * Internally, we don't reset all the timers when quota enforcement
c41564b5 771 * gets turned off. No need to confuse the user level code,
1da177e4
LT
772 * so return zeroes in that case.
773 */
18535a7e 774 if ((!XFS_IS_UQUOTA_ENFORCED(mp) && dqp->q_core.d_flags == XFS_DQ_USER) ||
e6d29426 775 (!XFS_IS_OQUOTA_ENFORCED(mp) &&
18535a7e 776 (dqp->q_core.d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) {
1da177e4
LT
777 dst->d_btimer = 0;
778 dst->d_itimer = 0;
779 dst->d_rtbtimer = 0;
780 }
781
782#ifdef DEBUG
ade7ce31 783 if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) ||
e6d29426 784 (XFS_IS_OQUOTA_ENFORCED(mp) &&
ade7ce31 785 (dst->d_flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)))) &&
e6d29426 786 dst->d_id != 0) {
d0a3fe67 787 if (((int) dst->d_bcount > (int) dst->d_blk_softlimit) &&
1da177e4
LT
788 (dst->d_blk_softlimit > 0)) {
789 ASSERT(dst->d_btimer != 0);
790 }
d0a3fe67 791 if (((int) dst->d_icount > (int) dst->d_ino_softlimit) &&
1da177e4
LT
792 (dst->d_ino_softlimit > 0)) {
793 ASSERT(dst->d_itimer != 0);
794 }
795 }
796#endif
18535a7e
CH
797out_put:
798 xfs_qm_dqput(dqp);
799 return error;
1da177e4
LT
800}
801
1da177e4
LT
802STATIC uint
803xfs_qm_export_qtype_flags(
804 uint flags)
805{
806 /*
c8ad20ff 807 * Can't be more than one, or none.
1da177e4 808 */
ade7ce31
CH
809 ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) !=
810 (FS_PROJ_QUOTA | FS_USER_QUOTA));
811 ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) !=
812 (FS_PROJ_QUOTA | FS_GROUP_QUOTA));
813 ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) !=
814 (FS_USER_QUOTA | FS_GROUP_QUOTA));
815 ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0);
1da177e4
LT
816
817 return (flags & XFS_DQ_USER) ?
ade7ce31
CH
818 FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
819 FS_PROJ_QUOTA : FS_GROUP_QUOTA;
1da177e4
LT
820}
821
1da177e4
LT
822STATIC uint
823xfs_qm_export_flags(
824 uint flags)
825{
826 uint uflags;
827
828 uflags = 0;
829 if (flags & XFS_UQUOTA_ACCT)
ade7ce31 830 uflags |= FS_QUOTA_UDQ_ACCT;
c8ad20ff 831 if (flags & XFS_PQUOTA_ACCT)
ade7ce31 832 uflags |= FS_QUOTA_PDQ_ACCT;
1da177e4 833 if (flags & XFS_GQUOTA_ACCT)
ade7ce31 834 uflags |= FS_QUOTA_GDQ_ACCT;
1da177e4 835 if (flags & XFS_UQUOTA_ENFD)
ade7ce31 836 uflags |= FS_QUOTA_UDQ_ENFD;
c8ad20ff
NS
837 if (flags & (XFS_OQUOTA_ENFD)) {
838 uflags |= (flags & XFS_GQUOTA_ACCT) ?
ade7ce31 839 FS_QUOTA_GDQ_ENFD : FS_QUOTA_PDQ_ENFD;
c8ad20ff 840 }
1da177e4
LT
841 return (uflags);
842}
843
844
fe588ed3
CH
845STATIC int
846xfs_dqrele_inode(
847 struct xfs_inode *ip,
848 struct xfs_perag *pag,
a454f742
BF
849 int flags,
850 void *args)
1da177e4 851{
fe588ed3 852 /* skip quota inodes */
8a7b8a89
CH
853 if (ip == ip->i_mount->m_quotainfo->qi_uquotaip ||
854 ip == ip->i_mount->m_quotainfo->qi_gquotaip) {
fe588ed3
CH
855 ASSERT(ip->i_udquot == NULL);
856 ASSERT(ip->i_gdquot == NULL);
fe588ed3
CH
857 return 0;
858 }
cb4f0d1d 859
fe588ed3
CH
860 xfs_ilock(ip, XFS_ILOCK_EXCL);
861 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
862 xfs_qm_dqrele(ip->i_udquot);
863 ip->i_udquot = NULL;
864 }
865 if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) {
866 xfs_qm_dqrele(ip->i_gdquot);
867 ip->i_gdquot = NULL;
868 }
f2d67614 869 xfs_iunlock(ip, XFS_ILOCK_EXCL);
fe588ed3 870 return 0;
5b4d89ae
DC
871}
872
fe588ed3 873
5b4d89ae
DC
874/*
875 * Go thru all the inodes in the file system, releasing their dquots.
fe588ed3 876 *
5b4d89ae 877 * Note that the mount structure gets modified to indicate that quotas are off
fe588ed3 878 * AFTER this, in the case of quotaoff.
5b4d89ae
DC
879 */
880void
881xfs_qm_dqrele_all_inodes(
882 struct xfs_mount *mp,
883 uint flags)
884{
5b4d89ae 885 ASSERT(mp->m_quotainfo);
a454f742 886 xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags, NULL);
1da177e4 887}