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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott4ce31212005-11-02 14:59:41 +11002 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott4ce31212005-11-02 14:59:41 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott4ce31212005-11-02 14:59:41 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott4ce31212005-11-02 14:59:41 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Randy Dunlap16f7e0f2006-01-11 12:17:46 -080018
19#include <linux/capability.h>
20
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include "xfs.h"
22#include "xfs_fs.h"
Dave Chinner6ca1c902013-08-12 20:49:26 +100023#include "xfs_format.h"
Nathan Scotta844f452005-11-02 14:38:42 +110024#include "xfs_bit.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include "xfs_log.h"
26#include "xfs_trans.h"
27#include "xfs_sb.h"
Nathan Scotta844f452005-11-02 14:38:42 +110028#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include "xfs_alloc.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include "xfs_quota.h"
31#include "xfs_mount.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include "xfs_bmap_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include "xfs_inode.h"
Christoph Hellwig673e8e52011-12-18 20:00:04 +000034#include "xfs_inode_item.h"
Nathan Scotta844f452005-11-02 14:38:42 +110035#include "xfs_itable.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#include "xfs_bmap.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#include "xfs_rtalloc.h"
38#include "xfs_error.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#include "xfs_attr.h"
40#include "xfs_buf_item.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#include "xfs_qm.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000042#include "xfs_trace.h"
Dave Chinner6d8b79c2012-10-08 21:56:09 +110043#include "xfs_icache.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
Linus Torvalds1da177e2005-04-16 15:20:36 -070045STATIC 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -070048STATIC uint xfs_qm_export_flags(uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -070049STATIC uint xfs_qm_export_qtype_flags(uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
51/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 * 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 */
Christoph Hellwigfcafb712009-02-09 08:47:34 +010059int
Linus Torvalds1da177e2005-04-16 15:20:36 -070060xfs_qm_scall_quotaoff(
61 xfs_mount_t *mp,
Christoph Hellwigfcafb712009-02-09 08:47:34 +010062 uint flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -070063{
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +100064 struct xfs_quotainfo *q = mp->m_quotainfo;
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 uint dqtype;
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 int error;
67 uint inactivate_flags;
68 xfs_qoff_logitem_t *qoffstart;
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 /*
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 */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +100087 ASSERT(q);
88 mutex_lock(&q->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
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
Eric Sandeen3685c2a2007-10-11 17:42:32 +100096 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 mp->m_sb.sb_qflags = mp->m_qflags;
Eric Sandeen3685c2a2007-10-11 17:42:32 +100098 spin_unlock(&mp->m_sb_lock);
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +100099 mutex_unlock(&q->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100
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;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500120 flags |= (XFS_GQUOTA_CHKD | XFS_GQUOTA_ENFD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 inactivate_flags |= XFS_GQUOTA_ACTIVE;
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500122 }
123 if (flags & XFS_PQUOTA_ACCT) {
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000124 dqtype |= XFS_QMOPT_PQUOTA;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500125 flags |= (XFS_PQUOTA_CHKD | XFS_PQUOTA_ENFD);
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000126 inactivate_flags |= XFS_PQUOTA_ACTIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 }
128
129 /*
130 * Nothing to do? Don't complain. This happens when we're just
131 * turning off quota enforcement.
132 */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000133 if ((mp->m_qflags & flags) == 0)
134 goto out_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
136 /*
137 * Write the LI_QUOTAOFF log record, and do SB changes atomically,
David Chinnercb6edc22008-04-10 12:20:45 +1000138 * and synchronously. If we fail to write, we should abort the
139 * operation as it cannot be recovered safely if we crash.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 */
David Chinnercb6edc22008-04-10 12:20:45 +1000141 error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
142 if (error)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000143 goto out_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
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
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300173 * don't want to take a mrlock every time we depend on quotas being on.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 */
Christoph Hellwigb84a3a92012-03-14 11:53:34 -0500175 mp->m_qflags &= ~flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
177 /*
178 * Go through all the dquots of this file system and purge them,
Christoph Hellwigb84a3a92012-03-14 11:53:34 -0500179 * according to what was turned off.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 */
Christoph Hellwigb84a3a92012-03-14 11:53:34 -0500181 xfs_qm_dqpurge_all(mp, dqtype);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
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 */
David Chinnercb6edc22008-04-10 12:20:45 +1000194 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);
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000198 goto out_unlock;
David Chinnercb6edc22008-04-10 12:20:45 +1000199 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
201 /*
Chandra Seetharamanc31ad432013-07-10 18:00:36 -0500202 * If all quotas are completely turned off, close shop.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 */
Chandra Seetharamanc31ad432013-07-10 18:00:36 -0500204 if (mp->m_qflags == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000205 mutex_unlock(&q->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 xfs_qm_destroy_quotainfo(mp);
207 return (0);
208 }
209
210 /*
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000211 * Release our quotainode references if we don't need them anymore.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000213 if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) {
214 IRELE(q->qi_uquotaip);
215 q->qi_uquotaip = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500217 if ((dqtype & XFS_QMOPT_GQUOTA) && q->qi_gquotaip) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000218 IRELE(q->qi_gquotaip);
219 q->qi_gquotaip = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500221 if ((dqtype & XFS_QMOPT_PQUOTA) && q->qi_pquotaip) {
222 IRELE(q->qi_pquotaip);
223 q->qi_pquotaip = NULL;
224 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000226out_unlock:
227 mutex_unlock(&q->qi_quotaofflock);
228 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229}
230
Christoph Hellwig5d188982010-07-20 17:51:31 +1000231STATIC 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);
Jie Liu3d3c8b52013-08-12 20:49:59 +1000250 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000251 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);
Christoph Hellwigddc34152011-09-19 15:00:54 +0000258 xfs_trans_ijoin(tp, ip, 0);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000259
Christoph Hellwig673e8e52011-12-18 20:00:04 +0000260 ip->i_d.di_size = 0;
Christoph Hellwig673e8e52011-12-18 20:00:04 +0000261 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
262
263 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000264 if (error) {
265 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
266 XFS_TRANS_ABORT);
267 goto out_unlock;
268 }
269
Christoph Hellwig673e8e52011-12-18 20:00:04 +0000270 ASSERT(ip->i_d.di_nextents == 0);
271
Dave Chinnerdcd79a12010-09-28 12:27:25 +1000272 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000273 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
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100282int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283xfs_qm_scall_trunc_qfiles(
284 xfs_mount_t *mp,
285 uint flags)
286{
David Chinner88ab0202008-04-10 12:20:51 +1000287 int error = 0, error2 = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
Eric Sandeen62118702008-03-06 13:44:28 +1100289 if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
Dave Chinner82211122011-03-07 10:07:35 +1100290 xfs_debug(mp, "%s: flags=%x m_qflags=%x\n",
291 __func__, flags, mp->m_qflags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 return XFS_ERROR(EINVAL);
293 }
294
Christoph Hellwig5d188982010-07-20 17:51:31 +1000295 if (flags & XFS_DQ_USER)
296 error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
Chandra Seetharamand892d582013-07-19 17:36:02 -0500297 if (flags & XFS_DQ_GROUP)
Christoph Hellwig5d188982010-07-20 17:51:31 +1000298 error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
Chandra Seetharamand892d582013-07-19 17:36:02 -0500299 if (flags & XFS_DQ_PROJ)
300 error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_pquotino);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301
David Chinner88ab0202008-04-10 12:20:51 +1000302 return error ? error : error2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303}
304
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305/*
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 */
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100310int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311xfs_qm_scall_quotaon(
312 xfs_mount_t *mp,
313 uint flags)
314{
315 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 uint qf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 __int64_t sbflags;
318
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
320 /*
321 * Switching on quota accounting must be done at mount time.
322 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 flags &= ~(XFS_ALL_QUOTA_ACCT);
324
325 sbflags = 0;
326
327 if (flags == 0) {
Dave Chinner82211122011-03-07 10:07:35 +1100328 xfs_debug(mp, "%s: zero flags, m_qflags=%x\n",
329 __func__, mp->m_qflags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 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 &&
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500342 (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)) ||
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000347 ((flags & XFS_PQUOTA_ACCT) == 0 &&
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500348 (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
349 (flags & XFS_PQUOTA_ENFD))) {
Dave Chinner82211122011-03-07 10:07:35 +1100350 xfs_debug(mp,
351 "%s: Can't enforce without acct, flags=%x sbflags=%x\n",
352 __func__, flags, mp->m_sb.sb_qflags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 return XFS_ERROR(EINVAL);
354 }
355 /*
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300356 * If everything's up to-date incore, then don't waste time.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 */
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 */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000365 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 qf = mp->m_sb.sb_qflags;
367 mp->m_sb.sb_qflags = qf | flags;
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000368 spin_unlock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
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)) ||
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000384 ((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)) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 (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 */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000397 mutex_lock(&mp->m_quotainfo->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000399 mutex_unlock(&mp->m_quotainfo->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400
401 return (0);
402}
403
404
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405/*
406 * Return quota status information, such as uquota-off, enforcements, etc.
Chandra Seetharaman5d5e3d52013-08-06 17:27:08 -0500407 * for Q_XGETQSTAT command.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 */
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100409int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410xfs_qm_scall_getqstat(
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000411 struct xfs_mount *mp,
412 struct fs_quota_stat *out)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413{
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000414 struct xfs_quotainfo *q = mp->m_quotainfo;
Chandra Seetharaman113a5682013-06-27 17:25:07 -0500415 struct xfs_inode *uip = NULL;
416 struct xfs_inode *gip = NULL;
Chandra Seetharamand892d582013-07-19 17:36:02 -0500417 struct xfs_inode *pip = NULL;
Chandra Seetharaman113a5682013-06-27 17:25:07 -0500418 bool tempuqip = false;
419 bool tempgqip = false;
Chandra Seetharamand892d582013-07-19 17:36:02 -0500420 bool temppqip = false;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 memset(out, 0, sizeof(fs_quota_stat_t));
423
424 out->qs_version = FS_QSTAT_VERSION;
Eric Sandeen62118702008-03-06 13:44:28 +1100425 if (!xfs_sb_version_hasquota(&mp->m_sb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 out->qs_uquota.qfs_ino = NULLFSINO;
427 out->qs_gquota.qfs_ino = NULLFSINO;
428 return (0);
429 }
Chandra Seetharamand892d582013-07-19 17:36:02 -0500430
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
432 (XFS_ALL_QUOTA_ACCT|
433 XFS_ALL_QUOTA_ENFD));
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000434 if (q) {
435 uip = q->qi_uquotaip;
436 gip = q->qi_gquotaip;
Chandra Seetharamand892d582013-07-19 17:36:02 -0500437 pip = q->qi_pquotaip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 }
439 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
440 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
Dave Chinner7b6259e2010-06-24 11:35:17 +1000441 0, 0, &uip) == 0)
Thiago Farina667a9292012-11-12 21:32:59 -0200442 tempuqip = true;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 }
444 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
445 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
Dave Chinner7b6259e2010-06-24 11:35:17 +1000446 0, 0, &gip) == 0)
Thiago Farina667a9292012-11-12 21:32:59 -0200447 tempgqip = true;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 }
Chandra Seetharamand892d582013-07-19 17:36:02 -0500449 /*
450 * Q_XGETQSTAT doesn't have room for both group and project quotas.
451 * So, allow the project quota values to be copied out only if
452 * there is no group quota information available.
453 */
454 if (!gip) {
455 if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
456 if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
457 0, 0, &pip) == 0)
458 temppqip = true;
459 }
460 } else
461 pip = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 if (uip) {
Chandra Seetharamand892d582013-07-19 17:36:02 -0500463 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
465 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
466 if (tempuqip)
Christoph Hellwig43355092008-03-27 18:01:08 +1100467 IRELE(uip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 }
Chandra Seetharamand892d582013-07-19 17:36:02 -0500469
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 if (gip) {
Chandra Seetharamand892d582013-07-19 17:36:02 -0500471 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
473 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
474 if (tempgqip)
Christoph Hellwig43355092008-03-27 18:01:08 +1100475 IRELE(gip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 }
Chandra Seetharamand892d582013-07-19 17:36:02 -0500477 if (pip) {
478 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
479 out->qs_gquota.qfs_nblks = pip->i_d.di_nblocks;
480 out->qs_gquota.qfs_nextents = pip->i_d.di_nextents;
481 if (temppqip)
482 IRELE(pip);
483 }
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000484 if (q) {
485 out->qs_incoredqs = q->qi_dquots;
486 out->qs_btimelimit = q->qi_btimelimit;
487 out->qs_itimelimit = q->qi_itimelimit;
488 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
489 out->qs_bwarnlimit = q->qi_bwarnlimit;
490 out->qs_iwarnlimit = q->qi_iwarnlimit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491 }
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000492 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493}
494
Chandra Seetharaman5d5e3d52013-08-06 17:27:08 -0500495/*
496 * Return quota status information, such as uquota-off, enforcements, etc.
497 * for Q_XGETQSTATV command, to support separate project quota field.
498 */
499int
500xfs_qm_scall_getqstatv(
501 struct xfs_mount *mp,
502 struct fs_quota_statv *out)
503{
504 struct xfs_quotainfo *q = mp->m_quotainfo;
505 struct xfs_inode *uip = NULL;
506 struct xfs_inode *gip = NULL;
507 struct xfs_inode *pip = NULL;
508 bool tempuqip = false;
509 bool tempgqip = false;
510 bool temppqip = false;
511
512 if (!xfs_sb_version_hasquota(&mp->m_sb)) {
513 out->qs_uquota.qfs_ino = NULLFSINO;
514 out->qs_gquota.qfs_ino = NULLFSINO;
515 out->qs_pquota.qfs_ino = NULLFSINO;
516 return (0);
517 }
518
519 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
520 (XFS_ALL_QUOTA_ACCT|
521 XFS_ALL_QUOTA_ENFD));
522 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
523 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
524 out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino;
525
526 if (q) {
527 uip = q->qi_uquotaip;
528 gip = q->qi_gquotaip;
529 pip = q->qi_pquotaip;
530 }
531 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
532 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
533 0, 0, &uip) == 0)
534 tempuqip = true;
535 }
536 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
537 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
538 0, 0, &gip) == 0)
539 tempgqip = true;
540 }
541 if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
542 if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
543 0, 0, &pip) == 0)
544 temppqip = true;
545 }
546 if (uip) {
547 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
548 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
549 if (tempuqip)
550 IRELE(uip);
551 }
552
553 if (gip) {
554 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
555 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
556 if (tempgqip)
557 IRELE(gip);
558 }
559 if (pip) {
560 out->qs_pquota.qfs_nblks = pip->i_d.di_nblocks;
561 out->qs_pquota.qfs_nextents = pip->i_d.di_nextents;
562 if (temppqip)
563 IRELE(pip);
564 }
565 if (q) {
566 out->qs_incoredqs = q->qi_dquots;
567 out->qs_btimelimit = q->qi_btimelimit;
568 out->qs_itimelimit = q->qi_itimelimit;
569 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
570 out->qs_bwarnlimit = q->qi_bwarnlimit;
571 out->qs_iwarnlimit = q->qi_iwarnlimit;
572 }
573 return 0;
574}
575
Christoph Hellwigc472b432010-05-06 17:05:17 -0400576#define XFS_DQ_MASK \
577 (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK)
578
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579/*
580 * Adjust quota limits, and start/stop timers accordingly.
581 */
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100582int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583xfs_qm_scall_setqlim(
Brian Fosterb1366452013-03-18 10:51:46 -0400584 struct xfs_mount *mp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 xfs_dqid_t id,
586 uint type,
587 fs_disk_quota_t *newlim)
588{
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000589 struct xfs_quotainfo *q = mp->m_quotainfo;
Brian Fosterb1366452013-03-18 10:51:46 -0400590 struct xfs_disk_dquot *ddq;
591 struct xfs_dquot *dqp;
592 struct xfs_trans *tp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 int error;
594 xfs_qcnt_t hard, soft;
595
Christoph Hellwigc472b432010-05-06 17:05:17 -0400596 if (newlim->d_fieldmask & ~XFS_DQ_MASK)
597 return EINVAL;
598 if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0)
599 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600
Dave Chinnerf6481672013-05-21 18:02:00 +1000601 /*
602 * We don't want to race with a quotaoff so take the quotaoff lock.
603 * We don't hold an inode lock, so there's nothing else to stop
604 * a quotaoff from happening.
605 */
606 mutex_lock(&q->qi_quotaofflock);
607
608 /*
609 * Get the dquot (locked) before we start, as we need to do a
610 * transaction to allocate it if it doesn't exist. Once we have the
611 * dquot, unlock it so we can start the next transaction safely. We hold
612 * a reference to the dquot, so it's safe to do this unlock/lock without
613 * it being reclaimed in the mean time.
614 */
615 error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp);
616 if (error) {
617 ASSERT(error != ENOENT);
618 goto out_unlock;
619 }
620 xfs_dqunlock(dqp);
621
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
Jie Liu3d3c8b52013-08-12 20:49:59 +1000623 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_setqlim, 0, 0);
Jeff Liuf0f2df92013-01-28 21:26:49 +0800624 if (error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 xfs_trans_cancel(tp, 0);
Dave Chinnerf6481672013-05-21 18:02:00 +1000626 goto out_rele;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 }
628
Dave Chinnerf6481672013-05-21 18:02:00 +1000629 xfs_dqlock(dqp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 xfs_trans_dqjoin(tp, dqp);
631 ddq = &dqp->q_core;
632
633 /*
634 * Make sure that hardlimits are >= soft limits before changing.
635 */
636 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
637 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100638 be64_to_cpu(ddq->d_blk_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
640 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100641 be64_to_cpu(ddq->d_blk_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 if (hard == 0 || hard >= soft) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100643 ddq->d_blk_hardlimit = cpu_to_be64(hard);
644 ddq->d_blk_softlimit = cpu_to_be64(soft);
Brian Fosterb1366452013-03-18 10:51:46 -0400645 xfs_dquot_set_prealloc_limits(dqp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 if (id == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000647 q->qi_bhardlimit = hard;
648 q->qi_bsoftlimit = soft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 }
650 } else {
Dave Chinner82211122011-03-07 10:07:35 +1100651 xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 }
653 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
654 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100655 be64_to_cpu(ddq->d_rtb_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
657 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100658 be64_to_cpu(ddq->d_rtb_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 if (hard == 0 || hard >= soft) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100660 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
661 ddq->d_rtb_softlimit = cpu_to_be64(soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 if (id == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000663 q->qi_rtbhardlimit = hard;
664 q->qi_rtbsoftlimit = soft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 }
666 } else {
Dave Chinner82211122011-03-07 10:07:35 +1100667 xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 }
669
670 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
671 (xfs_qcnt_t) newlim->d_ino_hardlimit :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100672 be64_to_cpu(ddq->d_ino_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
674 (xfs_qcnt_t) newlim->d_ino_softlimit :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100675 be64_to_cpu(ddq->d_ino_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 if (hard == 0 || hard >= soft) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100677 ddq->d_ino_hardlimit = cpu_to_be64(hard);
678 ddq->d_ino_softlimit = cpu_to_be64(soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 if (id == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000680 q->qi_ihardlimit = hard;
681 q->qi_isoftlimit = soft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 }
683 } else {
Dave Chinner82211122011-03-07 10:07:35 +1100684 xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 }
686
Nathan Scott754002b2005-06-21 15:49:06 +1000687 /*
688 * Update warnings counter(s) if requested
689 */
690 if (newlim->d_fieldmask & FS_DQ_BWARNS)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100691 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
Nathan Scott754002b2005-06-21 15:49:06 +1000692 if (newlim->d_fieldmask & FS_DQ_IWARNS)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100693 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
Nathan Scott754002b2005-06-21 15:49:06 +1000694 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100695 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
Nathan Scott754002b2005-06-21 15:49:06 +1000696
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 if (id == 0) {
698 /*
699 * Timelimits for the super user set the relative time
700 * the other users can be over quota for this file system.
701 * If it is zero a default is used. Ditto for the default
Nathan Scott754002b2005-06-21 15:49:06 +1000702 * soft and hard limit values (already done, above), and
703 * for warnings.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 */
705 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000706 q->qi_btimelimit = newlim->d_btimer;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100707 ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708 }
709 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000710 q->qi_itimelimit = newlim->d_itimer;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100711 ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712 }
713 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000714 q->qi_rtbtimelimit = newlim->d_rtbtimer;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100715 ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716 }
Nathan Scott754002b2005-06-21 15:49:06 +1000717 if (newlim->d_fieldmask & FS_DQ_BWARNS)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000718 q->qi_bwarnlimit = newlim->d_bwarns;
Nathan Scott754002b2005-06-21 15:49:06 +1000719 if (newlim->d_fieldmask & FS_DQ_IWARNS)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000720 q->qi_iwarnlimit = newlim->d_iwarns;
Nathan Scott754002b2005-06-21 15:49:06 +1000721 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000722 q->qi_rtbwarnlimit = newlim->d_rtbwarns;
Nathan Scott754002b2005-06-21 15:49:06 +1000723 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724 /*
725 * If the user is now over quota, start the timelimit.
726 * The user will not be 'warned'.
727 * Note that we keep the timers ticking, whether enforcement
728 * is on or off. We don't really want to bother with iterating
729 * over all ondisk dquots and turning the timers on/off.
730 */
731 xfs_qm_adjust_dqtimers(mp, ddq);
732 }
733 dqp->dq_flags |= XFS_DQ_DIRTY;
734 xfs_trans_log_dquot(tp, dqp);
735
David Chinnere5720ee2008-04-10 12:21:18 +1000736 error = xfs_trans_commit(tp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737
Dave Chinnerf6481672013-05-21 18:02:00 +1000738out_rele:
739 xfs_qm_dqrele(dqp);
740out_unlock:
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000741 mutex_unlock(&q->qi_quotaofflock);
David Chinnere5720ee2008-04-10 12:21:18 +1000742 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743}
744
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745STATIC int
746xfs_qm_log_quotaoff_end(
747 xfs_mount_t *mp,
748 xfs_qoff_logitem_t *startqoff,
749 uint flags)
750{
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000751 xfs_trans_t *tp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 int error;
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000753 xfs_qoff_logitem_t *qoffi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754
755 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
756
Jie Liu3d3c8b52013-08-12 20:49:59 +1000757 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_equotaoff, 0, 0);
Jeff Liu762d7ba2013-01-28 21:27:21 +0800758 if (error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 xfs_trans_cancel(tp, 0);
760 return (error);
761 }
762
763 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
764 flags & XFS_ALL_QUOTA_ACCT);
765 xfs_trans_log_quotaoff_item(tp, qoffi);
766
767 /*
768 * We have to make sure that the transaction is secure on disk before we
769 * return and actually stop quota accounting. So, make it synchronous.
770 * We don't care about quotoff's performance.
771 */
772 xfs_trans_set_sync(tp);
Eric Sandeen1c72bf92007-05-08 13:48:42 +1000773 error = xfs_trans_commit(tp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 return (error);
775}
776
777
778STATIC int
779xfs_qm_log_quotaoff(
780 xfs_mount_t *mp,
781 xfs_qoff_logitem_t **qoffstartp,
782 uint flags)
783{
784 xfs_trans_t *tp;
785 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 xfs_qoff_logitem_t *qoffi=NULL;
787 uint oldsbqflag=0;
788
789 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
Jie Liu3d3c8b52013-08-12 20:49:59 +1000790 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_quotaoff, 0, 0);
Jeff Liua1bd9552013-01-28 21:27:15 +0800791 if (error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792 goto error0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793
794 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
795 xfs_trans_log_quotaoff_item(tp, qoffi);
796
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000797 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 oldsbqflag = mp->m_sb.sb_qflags;
799 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000800 spin_unlock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801
802 xfs_mod_sb(tp, XFS_SB_QFLAGS);
803
804 /*
805 * We have to make sure that the transaction is secure on disk before we
806 * return and actually stop quota accounting. So, make it synchronous.
807 * We don't care about quotoff's performance.
808 */
809 xfs_trans_set_sync(tp);
Eric Sandeen1c72bf92007-05-08 13:48:42 +1000810 error = xfs_trans_commit(tp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811
812error0:
813 if (error) {
814 xfs_trans_cancel(tp, 0);
815 /*
816 * No one else is modifying sb_qflags, so this is OK.
817 * We still hold the quotaofflock.
818 */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000819 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 mp->m_sb.sb_qflags = oldsbqflag;
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000821 spin_unlock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 }
823 *qoffstartp = qoffi;
824 return (error);
825}
826
827
Christoph Hellwig18535a72012-02-20 02:28:16 +0000828int
829xfs_qm_scall_getquota(
830 struct xfs_mount *mp,
831 xfs_dqid_t id,
832 uint type,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833 struct fs_disk_quota *dst)
834{
Christoph Hellwig18535a72012-02-20 02:28:16 +0000835 struct xfs_dquot *dqp;
836 int error;
837
838 /*
839 * Try to get the dquot. We don't want it allocated on disk, so
840 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
841 * exist, we'll get ENOENT back.
842 */
843 error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp);
844 if (error)
845 return error;
846
847 /*
848 * If everything's NULL, this dquot doesn't quite exist as far as
849 * our utility programs are concerned.
850 */
851 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
852 error = XFS_ERROR(ENOENT);
853 goto out_put;
854 }
855
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 memset(dst, 0, sizeof(*dst));
Christoph Hellwig18535a72012-02-20 02:28:16 +0000857 dst->d_version = FS_DQUOT_VERSION;
858 dst->d_flags = xfs_qm_export_qtype_flags(dqp->q_core.d_flags);
859 dst->d_id = be32_to_cpu(dqp->q_core.d_id);
Christoph Hellwig1149d962005-11-02 15:01:12 +1100860 dst->d_blk_hardlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000861 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit));
Christoph Hellwig1149d962005-11-02 15:01:12 +1100862 dst->d_blk_softlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000863 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit));
864 dst->d_ino_hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
865 dst->d_ino_softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
Christoph Hellwig89605012012-02-20 02:28:17 +0000866 dst->d_bcount = XFS_FSB_TO_BB(mp, dqp->q_res_bcount);
867 dst->d_icount = dqp->q_res_icount;
Christoph Hellwig18535a72012-02-20 02:28:16 +0000868 dst->d_btimer = be32_to_cpu(dqp->q_core.d_btimer);
869 dst->d_itimer = be32_to_cpu(dqp->q_core.d_itimer);
870 dst->d_iwarns = be16_to_cpu(dqp->q_core.d_iwarns);
871 dst->d_bwarns = be16_to_cpu(dqp->q_core.d_bwarns);
Christoph Hellwig1149d962005-11-02 15:01:12 +1100872 dst->d_rtb_hardlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000873 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit));
Christoph Hellwig1149d962005-11-02 15:01:12 +1100874 dst->d_rtb_softlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000875 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit));
Christoph Hellwig89605012012-02-20 02:28:17 +0000876 dst->d_rtbcount = XFS_FSB_TO_BB(mp, dqp->q_res_rtbcount);
Christoph Hellwig18535a72012-02-20 02:28:16 +0000877 dst->d_rtbtimer = be32_to_cpu(dqp->q_core.d_rtbtimer);
878 dst->d_rtbwarns = be16_to_cpu(dqp->q_core.d_rtbwarns);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879
880 /*
881 * Internally, we don't reset all the timers when quota enforcement
Nathan Scottc41564b2006-03-29 08:55:14 +1000882 * gets turned off. No need to confuse the user level code,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 * so return zeroes in that case.
884 */
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500885 if ((!XFS_IS_UQUOTA_ENFORCED(mp) &&
886 dqp->q_core.d_flags == XFS_DQ_USER) ||
887 (!XFS_IS_GQUOTA_ENFORCED(mp) &&
888 dqp->q_core.d_flags == XFS_DQ_GROUP) ||
889 (!XFS_IS_PQUOTA_ENFORCED(mp) &&
890 dqp->q_core.d_flags == XFS_DQ_PROJ)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891 dst->d_btimer = 0;
892 dst->d_itimer = 0;
893 dst->d_rtbtimer = 0;
894 }
895
896#ifdef DEBUG
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200897 if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) ||
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500898 (XFS_IS_GQUOTA_ENFORCED(mp) && dst->d_flags == FS_GROUP_QUOTA) ||
899 (XFS_IS_PQUOTA_ENFORCED(mp) && dst->d_flags == FS_PROJ_QUOTA)) &&
Kouta Ooizumie6d29422007-05-08 13:49:33 +1000900 dst->d_id != 0) {
Brian Fosterf7555032012-12-21 10:45:17 -0500901 if ((dst->d_bcount > dst->d_blk_softlimit) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 (dst->d_blk_softlimit > 0)) {
903 ASSERT(dst->d_btimer != 0);
904 }
Brian Fosterf7555032012-12-21 10:45:17 -0500905 if ((dst->d_icount > dst->d_ino_softlimit) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906 (dst->d_ino_softlimit > 0)) {
907 ASSERT(dst->d_itimer != 0);
908 }
909 }
910#endif
Christoph Hellwig18535a72012-02-20 02:28:16 +0000911out_put:
912 xfs_qm_dqput(dqp);
913 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914}
915
916STATIC uint
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917xfs_qm_export_qtype_flags(
918 uint flags)
919{
920 /*
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000921 * Can't be more than one, or none.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 */
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200923 ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) !=
924 (FS_PROJ_QUOTA | FS_USER_QUOTA));
925 ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) !=
926 (FS_PROJ_QUOTA | FS_GROUP_QUOTA));
927 ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) !=
928 (FS_USER_QUOTA | FS_GROUP_QUOTA));
929 ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930
931 return (flags & XFS_DQ_USER) ?
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200932 FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
933 FS_PROJ_QUOTA : FS_GROUP_QUOTA;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934}
935
936STATIC uint
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937xfs_qm_export_flags(
938 uint flags)
939{
940 uint uflags;
941
942 uflags = 0;
943 if (flags & XFS_UQUOTA_ACCT)
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200944 uflags |= FS_QUOTA_UDQ_ACCT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945 if (flags & XFS_GQUOTA_ACCT)
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200946 uflags |= FS_QUOTA_GDQ_ACCT;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500947 if (flags & XFS_PQUOTA_ACCT)
948 uflags |= FS_QUOTA_PDQ_ACCT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949 if (flags & XFS_UQUOTA_ENFD)
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200950 uflags |= FS_QUOTA_UDQ_ENFD;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500951 if (flags & XFS_GQUOTA_ENFD)
952 uflags |= FS_QUOTA_GDQ_ENFD;
953 if (flags & XFS_PQUOTA_ENFD)
954 uflags |= FS_QUOTA_PDQ_ENFD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955 return (uflags);
956}
957
958
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200959STATIC int
960xfs_dqrele_inode(
961 struct xfs_inode *ip,
962 struct xfs_perag *pag,
Brian Fostera454f742012-11-06 09:50:39 -0500963 int flags,
964 void *args)
David Chinner5b4d89a2008-10-30 17:08:03 +1100965{
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200966 /* skip quota inodes */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000967 if (ip == ip->i_mount->m_quotainfo->qi_uquotaip ||
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500968 ip == ip->i_mount->m_quotainfo->qi_gquotaip ||
969 ip == ip->i_mount->m_quotainfo->qi_pquotaip) {
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200970 ASSERT(ip->i_udquot == NULL);
971 ASSERT(ip->i_gdquot == NULL);
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500972 ASSERT(ip->i_pdquot == NULL);
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200973 return 0;
974 }
Dave Chinnercb4f0d12008-11-10 17:11:18 +1100975
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200976 xfs_ilock(ip, XFS_ILOCK_EXCL);
977 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
978 xfs_qm_dqrele(ip->i_udquot);
979 ip->i_udquot = NULL;
980 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500981 if ((flags & XFS_GQUOTA_ACCT) && ip->i_gdquot) {
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200982 xfs_qm_dqrele(ip->i_gdquot);
983 ip->i_gdquot = NULL;
984 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500985 if ((flags & XFS_PQUOTA_ACCT) && ip->i_pdquot) {
986 xfs_qm_dqrele(ip->i_pdquot);
987 ip->i_pdquot = NULL;
988 }
Christoph Hellwigf2d67612010-06-24 11:52:50 +1000989 xfs_iunlock(ip, XFS_ILOCK_EXCL);
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200990 return 0;
David Chinner5b4d89a2008-10-30 17:08:03 +1100991}
992
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200993
David Chinner5b4d89a2008-10-30 17:08:03 +1100994/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995 * Go thru all the inodes in the file system, releasing their dquots.
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200996 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997 * Note that the mount structure gets modified to indicate that quotas are off
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200998 * AFTER this, in the case of quotaoff.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 */
1000void
1001xfs_qm_dqrele_all_inodes(
1002 struct xfs_mount *mp,
1003 uint flags)
1004{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005 ASSERT(mp->m_quotainfo);
Brian Fostera454f742012-11-06 09:50:39 -05001006 xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007}