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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"
Nathan Scotta844f452005-11-02 14:38:42 +110023#include "xfs_bit.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include "xfs_log.h"
25#include "xfs_trans.h"
26#include "xfs_sb.h"
Nathan Scotta844f452005-11-02 14:38:42 +110027#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include "xfs_alloc.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include "xfs_quota.h"
30#include "xfs_mount.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include "xfs_bmap_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include "xfs_inode.h"
Christoph Hellwig673e8e52011-12-18 20:00:04 +000033#include "xfs_inode_item.h"
Nathan Scotta844f452005-11-02 14:38:42 +110034#include "xfs_itable.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include "xfs_bmap.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#include "xfs_rtalloc.h"
37#include "xfs_error.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include "xfs_attr.h"
39#include "xfs_buf_item.h"
40#include "xfs_utils.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 /*
202 * If quotas is completely disabled, close shop.
203 */
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000204 if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
205 ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000206 mutex_unlock(&q->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 xfs_qm_destroy_quotainfo(mp);
208 return (0);
209 }
210
211 /*
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000212 * Release our quotainode references if we don't need them anymore.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000214 if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) {
215 IRELE(q->qi_uquotaip);
216 q->qi_uquotaip = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500218 if ((dqtype & XFS_QMOPT_GQUOTA) && q->qi_gquotaip) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000219 IRELE(q->qi_gquotaip);
220 q->qi_gquotaip = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500222 if ((dqtype & XFS_QMOPT_PQUOTA) && q->qi_pquotaip) {
223 IRELE(q->qi_pquotaip);
224 q->qi_pquotaip = NULL;
225 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000227out_unlock:
228 mutex_unlock(&q->qi_quotaofflock);
229 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230}
231
Christoph Hellwig5d188982010-07-20 17:51:31 +1000232STATIC int
233xfs_qm_scall_trunc_qfile(
234 struct xfs_mount *mp,
235 xfs_ino_t ino)
236{
237 struct xfs_inode *ip;
238 struct xfs_trans *tp;
239 int error;
240
241 if (ino == NULLFSINO)
242 return 0;
243
244 error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
245 if (error)
246 return error;
247
248 xfs_ilock(ip, XFS_IOLOCK_EXCL);
249
250 tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE);
251 error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
252 XFS_TRANS_PERM_LOG_RES,
253 XFS_ITRUNCATE_LOG_COUNT);
254 if (error) {
255 xfs_trans_cancel(tp, 0);
256 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
257 goto out_put;
258 }
259
260 xfs_ilock(ip, XFS_ILOCK_EXCL);
Christoph Hellwigddc34152011-09-19 15:00:54 +0000261 xfs_trans_ijoin(tp, ip, 0);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000262
Christoph Hellwig673e8e52011-12-18 20:00:04 +0000263 ip->i_d.di_size = 0;
Christoph Hellwig673e8e52011-12-18 20:00:04 +0000264 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
265
266 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000267 if (error) {
268 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
269 XFS_TRANS_ABORT);
270 goto out_unlock;
271 }
272
Christoph Hellwig673e8e52011-12-18 20:00:04 +0000273 ASSERT(ip->i_d.di_nextents == 0);
274
Dave Chinnerdcd79a12010-09-28 12:27:25 +1000275 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000276 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
277
278out_unlock:
279 xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
280out_put:
281 IRELE(ip);
282 return error;
283}
284
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100285int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286xfs_qm_scall_trunc_qfiles(
287 xfs_mount_t *mp,
288 uint flags)
289{
David Chinner88ab0202008-04-10 12:20:51 +1000290 int error = 0, error2 = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291
Eric Sandeen62118702008-03-06 13:44:28 +1100292 if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
Dave Chinner82211122011-03-07 10:07:35 +1100293 xfs_debug(mp, "%s: flags=%x m_qflags=%x\n",
294 __func__, flags, mp->m_qflags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 return XFS_ERROR(EINVAL);
296 }
297
Christoph Hellwig5d188982010-07-20 17:51:31 +1000298 if (flags & XFS_DQ_USER)
299 error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
300 if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ))
301 error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302
David Chinner88ab0202008-04-10 12:20:51 +1000303 return error ? error : error2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304}
305
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306/*
307 * Switch on (a given) quota enforcement for a filesystem. This takes
308 * effect immediately.
309 * (Switching on quota accounting must be done at mount time.)
310 */
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100311int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312xfs_qm_scall_quotaon(
313 xfs_mount_t *mp,
314 uint flags)
315{
316 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 uint qf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 __int64_t sbflags;
319
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
321 /*
322 * Switching on quota accounting must be done at mount time.
323 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 flags &= ~(XFS_ALL_QUOTA_ACCT);
325
326 sbflags = 0;
327
328 if (flags == 0) {
Dave Chinner82211122011-03-07 10:07:35 +1100329 xfs_debug(mp, "%s: zero flags, m_qflags=%x\n",
330 __func__, mp->m_qflags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 return XFS_ERROR(EINVAL);
332 }
333
334 /* No fs can turn on quotas with a delayed effect */
335 ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0);
336
337 /*
338 * Can't enforce without accounting. We check the superblock
339 * qflags here instead of m_qflags because rootfs can have
340 * quota acct on ondisk without m_qflags' knowing.
341 */
342 if (((flags & XFS_UQUOTA_ACCT) == 0 &&
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500343 (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
344 (flags & XFS_UQUOTA_ENFD)) ||
345 ((flags & XFS_GQUOTA_ACCT) == 0 &&
346 (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
347 (flags & XFS_GQUOTA_ENFD)) ||
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000348 ((flags & XFS_PQUOTA_ACCT) == 0 &&
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500349 (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
350 (flags & XFS_PQUOTA_ENFD))) {
Dave Chinner82211122011-03-07 10:07:35 +1100351 xfs_debug(mp,
352 "%s: Can't enforce without acct, flags=%x sbflags=%x\n",
353 __func__, flags, mp->m_sb.sb_qflags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 return XFS_ERROR(EINVAL);
355 }
356 /*
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300357 * If everything's up to-date incore, then don't waste time.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 */
359 if ((mp->m_qflags & flags) == flags)
360 return XFS_ERROR(EEXIST);
361
362 /*
363 * Change sb_qflags on disk but not incore mp->qflags
364 * if this is the root filesystem.
365 */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000366 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 qf = mp->m_sb.sb_qflags;
368 mp->m_sb.sb_qflags = qf | flags;
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000369 spin_unlock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370
371 /*
372 * There's nothing to change if it's the same.
373 */
374 if ((qf & flags) == flags && sbflags == 0)
375 return XFS_ERROR(EEXIST);
376 sbflags |= XFS_SB_QFLAGS;
377
378 if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
379 return (error);
380 /*
381 * If we aren't trying to switch on quota enforcement, we are done.
382 */
383 if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
384 (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000385 ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
386 (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
387 ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
388 (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 (flags & XFS_ALL_QUOTA_ENFD) == 0)
390 return (0);
391
392 if (! XFS_IS_QUOTA_RUNNING(mp))
393 return XFS_ERROR(ESRCH);
394
395 /*
396 * Switch on quota enforcement in core.
397 */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000398 mutex_lock(&mp->m_quotainfo->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000400 mutex_unlock(&mp->m_quotainfo->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
402 return (0);
403}
404
405
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406/*
407 * Return quota status information, such as uquota-off, enforcements, etc.
408 */
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;
417 bool tempuqip = false;
418 bool tempgqip = false;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 memset(out, 0, sizeof(fs_quota_stat_t));
421
422 out->qs_version = FS_QSTAT_VERSION;
Eric Sandeen62118702008-03-06 13:44:28 +1100423 if (!xfs_sb_version_hasquota(&mp->m_sb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 out->qs_uquota.qfs_ino = NULLFSINO;
425 out->qs_gquota.qfs_ino = NULLFSINO;
426 return (0);
427 }
428 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
429 (XFS_ALL_QUOTA_ACCT|
430 XFS_ALL_QUOTA_ENFD));
431 out->qs_pad = 0;
432 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
433 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
434
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000435 if (q) {
436 uip = q->qi_uquotaip;
437 gip = q->qi_gquotaip;
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 }
449 if (uip) {
450 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
451 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
452 if (tempuqip)
Christoph Hellwig43355092008-03-27 18:01:08 +1100453 IRELE(uip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 }
455 if (gip) {
456 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
457 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
458 if (tempgqip)
Christoph Hellwig43355092008-03-27 18:01:08 +1100459 IRELE(gip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 }
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000461 if (q) {
462 out->qs_incoredqs = q->qi_dquots;
463 out->qs_btimelimit = q->qi_btimelimit;
464 out->qs_itimelimit = q->qi_itimelimit;
465 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
466 out->qs_bwarnlimit = q->qi_bwarnlimit;
467 out->qs_iwarnlimit = q->qi_iwarnlimit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 }
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000469 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470}
471
Christoph Hellwigc472b432010-05-06 17:05:17 -0400472#define XFS_DQ_MASK \
473 (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK)
474
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475/*
476 * Adjust quota limits, and start/stop timers accordingly.
477 */
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100478int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479xfs_qm_scall_setqlim(
Brian Fosterb1366452013-03-18 10:51:46 -0400480 struct xfs_mount *mp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 xfs_dqid_t id,
482 uint type,
483 fs_disk_quota_t *newlim)
484{
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000485 struct xfs_quotainfo *q = mp->m_quotainfo;
Brian Fosterb1366452013-03-18 10:51:46 -0400486 struct xfs_disk_dquot *ddq;
487 struct xfs_dquot *dqp;
488 struct xfs_trans *tp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 int error;
490 xfs_qcnt_t hard, soft;
491
Christoph Hellwigc472b432010-05-06 17:05:17 -0400492 if (newlim->d_fieldmask & ~XFS_DQ_MASK)
493 return EINVAL;
494 if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0)
495 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496
Dave Chinnerf6481672013-05-21 18:02:00 +1000497 /*
498 * We don't want to race with a quotaoff so take the quotaoff lock.
499 * We don't hold an inode lock, so there's nothing else to stop
500 * a quotaoff from happening.
501 */
502 mutex_lock(&q->qi_quotaofflock);
503
504 /*
505 * Get the dquot (locked) before we start, as we need to do a
506 * transaction to allocate it if it doesn't exist. Once we have the
507 * dquot, unlock it so we can start the next transaction safely. We hold
508 * a reference to the dquot, so it's safe to do this unlock/lock without
509 * it being reclaimed in the mean time.
510 */
511 error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp);
512 if (error) {
513 ASSERT(error != ENOENT);
514 goto out_unlock;
515 }
516 xfs_dqunlock(dqp);
517
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
Jeff Liuf0f2df92013-01-28 21:26:49 +0800519 error = xfs_trans_reserve(tp, 0, XFS_QM_SETQLIM_LOG_RES(mp),
520 0, 0, XFS_DEFAULT_LOG_COUNT);
521 if (error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 xfs_trans_cancel(tp, 0);
Dave Chinnerf6481672013-05-21 18:02:00 +1000523 goto out_rele;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 }
525
Dave Chinnerf6481672013-05-21 18:02:00 +1000526 xfs_dqlock(dqp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 xfs_trans_dqjoin(tp, dqp);
528 ddq = &dqp->q_core;
529
530 /*
531 * Make sure that hardlimits are >= soft limits before changing.
532 */
533 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
534 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100535 be64_to_cpu(ddq->d_blk_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
537 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100538 be64_to_cpu(ddq->d_blk_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 if (hard == 0 || hard >= soft) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100540 ddq->d_blk_hardlimit = cpu_to_be64(hard);
541 ddq->d_blk_softlimit = cpu_to_be64(soft);
Brian Fosterb1366452013-03-18 10:51:46 -0400542 xfs_dquot_set_prealloc_limits(dqp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 if (id == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000544 q->qi_bhardlimit = hard;
545 q->qi_bsoftlimit = soft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 }
547 } else {
Dave Chinner82211122011-03-07 10:07:35 +1100548 xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 }
550 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
551 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100552 be64_to_cpu(ddq->d_rtb_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
554 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100555 be64_to_cpu(ddq->d_rtb_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 if (hard == 0 || hard >= soft) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100557 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
558 ddq->d_rtb_softlimit = cpu_to_be64(soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 if (id == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000560 q->qi_rtbhardlimit = hard;
561 q->qi_rtbsoftlimit = soft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 }
563 } else {
Dave Chinner82211122011-03-07 10:07:35 +1100564 xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 }
566
567 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
568 (xfs_qcnt_t) newlim->d_ino_hardlimit :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100569 be64_to_cpu(ddq->d_ino_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
571 (xfs_qcnt_t) newlim->d_ino_softlimit :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100572 be64_to_cpu(ddq->d_ino_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 if (hard == 0 || hard >= soft) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100574 ddq->d_ino_hardlimit = cpu_to_be64(hard);
575 ddq->d_ino_softlimit = cpu_to_be64(soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 if (id == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000577 q->qi_ihardlimit = hard;
578 q->qi_isoftlimit = soft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 }
580 } else {
Dave Chinner82211122011-03-07 10:07:35 +1100581 xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 }
583
Nathan Scott754002b2005-06-21 15:49:06 +1000584 /*
585 * Update warnings counter(s) if requested
586 */
587 if (newlim->d_fieldmask & FS_DQ_BWARNS)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100588 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
Nathan Scott754002b2005-06-21 15:49:06 +1000589 if (newlim->d_fieldmask & FS_DQ_IWARNS)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100590 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
Nathan Scott754002b2005-06-21 15:49:06 +1000591 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100592 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
Nathan Scott754002b2005-06-21 15:49:06 +1000593
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 if (id == 0) {
595 /*
596 * Timelimits for the super user set the relative time
597 * the other users can be over quota for this file system.
598 * If it is zero a default is used. Ditto for the default
Nathan Scott754002b2005-06-21 15:49:06 +1000599 * soft and hard limit values (already done, above), and
600 * for warnings.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 */
602 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000603 q->qi_btimelimit = newlim->d_btimer;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100604 ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 }
606 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000607 q->qi_itimelimit = newlim->d_itimer;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100608 ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 }
610 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000611 q->qi_rtbtimelimit = newlim->d_rtbtimer;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100612 ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 }
Nathan Scott754002b2005-06-21 15:49:06 +1000614 if (newlim->d_fieldmask & FS_DQ_BWARNS)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000615 q->qi_bwarnlimit = newlim->d_bwarns;
Nathan Scott754002b2005-06-21 15:49:06 +1000616 if (newlim->d_fieldmask & FS_DQ_IWARNS)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000617 q->qi_iwarnlimit = newlim->d_iwarns;
Nathan Scott754002b2005-06-21 15:49:06 +1000618 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000619 q->qi_rtbwarnlimit = newlim->d_rtbwarns;
Nathan Scott754002b2005-06-21 15:49:06 +1000620 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 /*
622 * If the user is now over quota, start the timelimit.
623 * The user will not be 'warned'.
624 * Note that we keep the timers ticking, whether enforcement
625 * is on or off. We don't really want to bother with iterating
626 * over all ondisk dquots and turning the timers on/off.
627 */
628 xfs_qm_adjust_dqtimers(mp, ddq);
629 }
630 dqp->dq_flags |= XFS_DQ_DIRTY;
631 xfs_trans_log_dquot(tp, dqp);
632
David Chinnere5720ee2008-04-10 12:21:18 +1000633 error = xfs_trans_commit(tp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634
Dave Chinnerf6481672013-05-21 18:02:00 +1000635out_rele:
636 xfs_qm_dqrele(dqp);
637out_unlock:
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000638 mutex_unlock(&q->qi_quotaofflock);
David Chinnere5720ee2008-04-10 12:21:18 +1000639 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640}
641
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642STATIC int
643xfs_qm_log_quotaoff_end(
644 xfs_mount_t *mp,
645 xfs_qoff_logitem_t *startqoff,
646 uint flags)
647{
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000648 xfs_trans_t *tp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 int error;
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000650 xfs_qoff_logitem_t *qoffi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651
652 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
653
Jeff Liu762d7ba2013-01-28 21:27:21 +0800654 error = xfs_trans_reserve(tp, 0, XFS_QM_QUOTAOFF_END_LOG_RES(mp),
655 0, 0, XFS_DEFAULT_LOG_COUNT);
656 if (error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 xfs_trans_cancel(tp, 0);
658 return (error);
659 }
660
661 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
662 flags & XFS_ALL_QUOTA_ACCT);
663 xfs_trans_log_quotaoff_item(tp, qoffi);
664
665 /*
666 * We have to make sure that the transaction is secure on disk before we
667 * return and actually stop quota accounting. So, make it synchronous.
668 * We don't care about quotoff's performance.
669 */
670 xfs_trans_set_sync(tp);
Eric Sandeen1c72bf92007-05-08 13:48:42 +1000671 error = xfs_trans_commit(tp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 return (error);
673}
674
675
676STATIC int
677xfs_qm_log_quotaoff(
678 xfs_mount_t *mp,
679 xfs_qoff_logitem_t **qoffstartp,
680 uint flags)
681{
682 xfs_trans_t *tp;
683 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 xfs_qoff_logitem_t *qoffi=NULL;
685 uint oldsbqflag=0;
686
687 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
Jeff Liua1bd9552013-01-28 21:27:15 +0800688 error = xfs_trans_reserve(tp, 0, XFS_QM_QUOTAOFF_LOG_RES(mp),
689 0, 0, XFS_DEFAULT_LOG_COUNT);
690 if (error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 goto error0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692
693 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
694 xfs_trans_log_quotaoff_item(tp, qoffi);
695
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000696 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 oldsbqflag = mp->m_sb.sb_qflags;
698 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000699 spin_unlock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700
701 xfs_mod_sb(tp, XFS_SB_QFLAGS);
702
703 /*
704 * We have to make sure that the transaction is secure on disk before we
705 * return and actually stop quota accounting. So, make it synchronous.
706 * We don't care about quotoff's performance.
707 */
708 xfs_trans_set_sync(tp);
Eric Sandeen1c72bf92007-05-08 13:48:42 +1000709 error = xfs_trans_commit(tp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710
711error0:
712 if (error) {
713 xfs_trans_cancel(tp, 0);
714 /*
715 * No one else is modifying sb_qflags, so this is OK.
716 * We still hold the quotaofflock.
717 */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000718 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719 mp->m_sb.sb_qflags = oldsbqflag;
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000720 spin_unlock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721 }
722 *qoffstartp = qoffi;
723 return (error);
724}
725
726
Christoph Hellwig18535a72012-02-20 02:28:16 +0000727int
728xfs_qm_scall_getquota(
729 struct xfs_mount *mp,
730 xfs_dqid_t id,
731 uint type,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 struct fs_disk_quota *dst)
733{
Christoph Hellwig18535a72012-02-20 02:28:16 +0000734 struct xfs_dquot *dqp;
735 int error;
736
737 /*
738 * Try to get the dquot. We don't want it allocated on disk, so
739 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
740 * exist, we'll get ENOENT back.
741 */
742 error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp);
743 if (error)
744 return error;
745
746 /*
747 * If everything's NULL, this dquot doesn't quite exist as far as
748 * our utility programs are concerned.
749 */
750 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
751 error = XFS_ERROR(ENOENT);
752 goto out_put;
753 }
754
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 memset(dst, 0, sizeof(*dst));
Christoph Hellwig18535a72012-02-20 02:28:16 +0000756 dst->d_version = FS_DQUOT_VERSION;
757 dst->d_flags = xfs_qm_export_qtype_flags(dqp->q_core.d_flags);
758 dst->d_id = be32_to_cpu(dqp->q_core.d_id);
Christoph Hellwig1149d962005-11-02 15:01:12 +1100759 dst->d_blk_hardlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000760 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit));
Christoph Hellwig1149d962005-11-02 15:01:12 +1100761 dst->d_blk_softlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000762 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit));
763 dst->d_ino_hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
764 dst->d_ino_softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
Christoph Hellwig89605012012-02-20 02:28:17 +0000765 dst->d_bcount = XFS_FSB_TO_BB(mp, dqp->q_res_bcount);
766 dst->d_icount = dqp->q_res_icount;
Christoph Hellwig18535a72012-02-20 02:28:16 +0000767 dst->d_btimer = be32_to_cpu(dqp->q_core.d_btimer);
768 dst->d_itimer = be32_to_cpu(dqp->q_core.d_itimer);
769 dst->d_iwarns = be16_to_cpu(dqp->q_core.d_iwarns);
770 dst->d_bwarns = be16_to_cpu(dqp->q_core.d_bwarns);
Christoph Hellwig1149d962005-11-02 15:01:12 +1100771 dst->d_rtb_hardlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000772 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit));
Christoph Hellwig1149d962005-11-02 15:01:12 +1100773 dst->d_rtb_softlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000774 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit));
Christoph Hellwig89605012012-02-20 02:28:17 +0000775 dst->d_rtbcount = XFS_FSB_TO_BB(mp, dqp->q_res_rtbcount);
Christoph Hellwig18535a72012-02-20 02:28:16 +0000776 dst->d_rtbtimer = be32_to_cpu(dqp->q_core.d_rtbtimer);
777 dst->d_rtbwarns = be16_to_cpu(dqp->q_core.d_rtbwarns);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778
779 /*
780 * Internally, we don't reset all the timers when quota enforcement
Nathan Scottc41564b2006-03-29 08:55:14 +1000781 * gets turned off. No need to confuse the user level code,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 * so return zeroes in that case.
783 */
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500784 if ((!XFS_IS_UQUOTA_ENFORCED(mp) &&
785 dqp->q_core.d_flags == XFS_DQ_USER) ||
786 (!XFS_IS_GQUOTA_ENFORCED(mp) &&
787 dqp->q_core.d_flags == XFS_DQ_GROUP) ||
788 (!XFS_IS_PQUOTA_ENFORCED(mp) &&
789 dqp->q_core.d_flags == XFS_DQ_PROJ)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790 dst->d_btimer = 0;
791 dst->d_itimer = 0;
792 dst->d_rtbtimer = 0;
793 }
794
795#ifdef DEBUG
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200796 if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) ||
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500797 (XFS_IS_GQUOTA_ENFORCED(mp) && dst->d_flags == FS_GROUP_QUOTA) ||
798 (XFS_IS_PQUOTA_ENFORCED(mp) && dst->d_flags == FS_PROJ_QUOTA)) &&
Kouta Ooizumie6d29422007-05-08 13:49:33 +1000799 dst->d_id != 0) {
Brian Fosterf7555032012-12-21 10:45:17 -0500800 if ((dst->d_bcount > dst->d_blk_softlimit) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 (dst->d_blk_softlimit > 0)) {
802 ASSERT(dst->d_btimer != 0);
803 }
Brian Fosterf7555032012-12-21 10:45:17 -0500804 if ((dst->d_icount > dst->d_ino_softlimit) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 (dst->d_ino_softlimit > 0)) {
806 ASSERT(dst->d_itimer != 0);
807 }
808 }
809#endif
Christoph Hellwig18535a72012-02-20 02:28:16 +0000810out_put:
811 xfs_qm_dqput(dqp);
812 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813}
814
815STATIC uint
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816xfs_qm_export_qtype_flags(
817 uint flags)
818{
819 /*
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000820 * Can't be more than one, or none.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821 */
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200822 ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) !=
823 (FS_PROJ_QUOTA | FS_USER_QUOTA));
824 ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) !=
825 (FS_PROJ_QUOTA | FS_GROUP_QUOTA));
826 ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) !=
827 (FS_USER_QUOTA | FS_GROUP_QUOTA));
828 ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829
830 return (flags & XFS_DQ_USER) ?
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200831 FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
832 FS_PROJ_QUOTA : FS_GROUP_QUOTA;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833}
834
835STATIC uint
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836xfs_qm_export_flags(
837 uint flags)
838{
839 uint uflags;
840
841 uflags = 0;
842 if (flags & XFS_UQUOTA_ACCT)
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200843 uflags |= FS_QUOTA_UDQ_ACCT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844 if (flags & XFS_GQUOTA_ACCT)
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200845 uflags |= FS_QUOTA_GDQ_ACCT;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500846 if (flags & XFS_PQUOTA_ACCT)
847 uflags |= FS_QUOTA_PDQ_ACCT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848 if (flags & XFS_UQUOTA_ENFD)
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200849 uflags |= FS_QUOTA_UDQ_ENFD;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500850 if (flags & XFS_GQUOTA_ENFD)
851 uflags |= FS_QUOTA_GDQ_ENFD;
852 if (flags & XFS_PQUOTA_ENFD)
853 uflags |= FS_QUOTA_PDQ_ENFD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854 return (uflags);
855}
856
857
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200858STATIC int
859xfs_dqrele_inode(
860 struct xfs_inode *ip,
861 struct xfs_perag *pag,
Brian Fostera454f742012-11-06 09:50:39 -0500862 int flags,
863 void *args)
David Chinner5b4d89a2008-10-30 17:08:03 +1100864{
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200865 /* skip quota inodes */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000866 if (ip == ip->i_mount->m_quotainfo->qi_uquotaip ||
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500867 ip == ip->i_mount->m_quotainfo->qi_gquotaip ||
868 ip == ip->i_mount->m_quotainfo->qi_pquotaip) {
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200869 ASSERT(ip->i_udquot == NULL);
870 ASSERT(ip->i_gdquot == NULL);
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500871 ASSERT(ip->i_pdquot == NULL);
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200872 return 0;
873 }
Dave Chinnercb4f0d12008-11-10 17:11:18 +1100874
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200875 xfs_ilock(ip, XFS_ILOCK_EXCL);
876 if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
877 xfs_qm_dqrele(ip->i_udquot);
878 ip->i_udquot = NULL;
879 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500880 if ((flags & XFS_GQUOTA_ACCT) && ip->i_gdquot) {
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200881 xfs_qm_dqrele(ip->i_gdquot);
882 ip->i_gdquot = NULL;
883 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500884 if ((flags & XFS_PQUOTA_ACCT) && ip->i_pdquot) {
885 xfs_qm_dqrele(ip->i_pdquot);
886 ip->i_pdquot = NULL;
887 }
Christoph Hellwigf2d67612010-06-24 11:52:50 +1000888 xfs_iunlock(ip, XFS_ILOCK_EXCL);
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200889 return 0;
David Chinner5b4d89a2008-10-30 17:08:03 +1100890}
891
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200892
David Chinner5b4d89a2008-10-30 17:08:03 +1100893/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894 * Go thru all the inodes in the file system, releasing their dquots.
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200895 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 * Note that the mount structure gets modified to indicate that quotas are off
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200897 * AFTER this, in the case of quotaoff.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 */
899void
900xfs_qm_dqrele_all_inodes(
901 struct xfs_mount *mp,
902 uint flags)
903{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 ASSERT(mp->m_quotainfo);
Brian Fostera454f742012-11-06 09:50:39 -0500905 xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906}