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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 Chinner70a9883c2013-10-23 10:36:05 +110023#include "xfs_shared.h"
Dave Chinner239880e2013-10-23 10:50:10 +110024#include "xfs_format.h"
25#include "xfs_log_format.h"
26#include "xfs_trans_resv.h"
Nathan Scotta844f452005-11-02 14:38:42 +110027#include "xfs_bit.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include "xfs_sb.h"
Nathan Scotta844f452005-11-02 14:38:42 +110029#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include "xfs_mount.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include "xfs_inode.h"
Dave Chinner239880e2013-10-23 10:50:10 +110032#include "xfs_trans.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include "xfs_error.h"
Dave Chinnera4fbe6a2013-10-23 10:51:50 +110034#include "xfs_quota.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include "xfs_qm.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000036#include "xfs_trace.h"
Dave Chinner6d8b79c2012-10-08 21:56:09 +110037#include "xfs_icache.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
Linus Torvalds1da177e2005-04-16 15:20:36 -070039STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
40STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
41 uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -070042STATIC uint xfs_qm_export_flags(uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -070043STATIC uint xfs_qm_export_qtype_flags(uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
45/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 * Turn off quota accounting and/or enforcement for all udquots and/or
47 * gdquots. Called only at unmount time.
48 *
49 * This assumes that there are no dquots of this file system cached
50 * incore, and modifies the ondisk dquot directly. Therefore, for example,
51 * it is an error to call this twice, without purging the cache.
52 */
Christoph Hellwigfcafb712009-02-09 08:47:34 +010053int
Linus Torvalds1da177e2005-04-16 15:20:36 -070054xfs_qm_scall_quotaoff(
55 xfs_mount_t *mp,
Christoph Hellwigfcafb712009-02-09 08:47:34 +010056 uint flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -070057{
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +100058 struct xfs_quotainfo *q = mp->m_quotainfo;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 uint dqtype;
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 int error;
61 uint inactivate_flags;
62 xfs_qoff_logitem_t *qoffstart;
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 /*
65 * No file system can have quotas enabled on disk but not in core.
66 * Note that quota utilities (like quotaoff) _expect_
Dave Chinner24513372014-06-25 14:58:08 +100067 * errno == -EEXIST here.
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 */
69 if ((mp->m_qflags & flags) == 0)
Dave Chinner24513372014-06-25 14:58:08 +100070 return -EEXIST;
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 error = 0;
72
73 flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
74
75 /*
76 * We don't want to deal with two quotaoffs messing up each other,
77 * so we're going to serialize it. quotaoff isn't exactly a performance
78 * critical thing.
79 * If quotaoff, then we must be dealing with the root filesystem.
80 */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +100081 ASSERT(q);
82 mutex_lock(&q->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
84 /*
85 * If we're just turning off quota enforcement, change mp and go.
86 */
87 if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
88 mp->m_qflags &= ~(flags);
89
Eric Sandeen3685c2a2007-10-11 17:42:32 +100090 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 mp->m_sb.sb_qflags = mp->m_qflags;
Eric Sandeen3685c2a2007-10-11 17:42:32 +100092 spin_unlock(&mp->m_sb_lock);
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +100093 mutex_unlock(&q->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95 /* XXX what to do if error ? Revert back to old vals incore ? */
96 error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS);
Eric Sandeend99831f2014-06-22 15:03:54 +100097 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 }
99
100 dqtype = 0;
101 inactivate_flags = 0;
102 /*
103 * If accounting is off, we must turn enforcement off, clear the
104 * quota 'CHKD' certificate to make it known that we have to
105 * do a quotacheck the next time this quota is turned on.
106 */
107 if (flags & XFS_UQUOTA_ACCT) {
108 dqtype |= XFS_QMOPT_UQUOTA;
109 flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD);
110 inactivate_flags |= XFS_UQUOTA_ACTIVE;
111 }
112 if (flags & XFS_GQUOTA_ACCT) {
113 dqtype |= XFS_QMOPT_GQUOTA;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500114 flags |= (XFS_GQUOTA_CHKD | XFS_GQUOTA_ENFD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 inactivate_flags |= XFS_GQUOTA_ACTIVE;
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500116 }
117 if (flags & XFS_PQUOTA_ACCT) {
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000118 dqtype |= XFS_QMOPT_PQUOTA;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500119 flags |= (XFS_PQUOTA_CHKD | XFS_PQUOTA_ENFD);
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000120 inactivate_flags |= XFS_PQUOTA_ACTIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 }
122
123 /*
124 * Nothing to do? Don't complain. This happens when we're just
125 * turning off quota enforcement.
126 */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000127 if ((mp->m_qflags & flags) == 0)
128 goto out_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
130 /*
131 * Write the LI_QUOTAOFF log record, and do SB changes atomically,
David Chinnercb6edc22008-04-10 12:20:45 +1000132 * and synchronously. If we fail to write, we should abort the
133 * operation as it cannot be recovered safely if we crash.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 */
David Chinnercb6edc22008-04-10 12:20:45 +1000135 error = xfs_qm_log_quotaoff(mp, &qoffstart, flags);
136 if (error)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000137 goto out_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
139 /*
140 * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct
141 * to take care of the race between dqget and quotaoff. We don't take
142 * any special locks to reset these bits. All processes need to check
143 * these bits *after* taking inode lock(s) to see if the particular
144 * quota type is in the process of being turned off. If *ACTIVE, it is
145 * guaranteed that all dquot structures and all quotainode ptrs will all
146 * stay valid as long as that inode is kept locked.
147 *
148 * There is no turning back after this.
149 */
150 mp->m_qflags &= ~inactivate_flags;
151
152 /*
153 * Give back all the dquot reference(s) held by inodes.
154 * Here we go thru every single incore inode in this file system, and
155 * do a dqrele on the i_udquot/i_gdquot that it may have.
156 * Essentially, as long as somebody has an inode locked, this guarantees
157 * that quotas will not be turned off. This is handy because in a
158 * transaction once we lock the inode(s) and check for quotaon, we can
159 * depend on the quota inodes (and other things) being valid as long as
160 * we keep the lock(s).
161 */
162 xfs_qm_dqrele_all_inodes(mp, flags);
163
164 /*
165 * Next we make the changes in the quota flag in the mount struct.
166 * This isn't protected by a particular lock directly, because we
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300167 * don't want to take a mrlock every time we depend on quotas being on.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 */
Christoph Hellwigb84a3a92012-03-14 11:53:34 -0500169 mp->m_qflags &= ~flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170
171 /*
172 * Go through all the dquots of this file system and purge them,
Christoph Hellwigb84a3a92012-03-14 11:53:34 -0500173 * according to what was turned off.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 */
Christoph Hellwigb84a3a92012-03-14 11:53:34 -0500175 xfs_qm_dqpurge_all(mp, dqtype);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
177 /*
178 * Transactions that had started before ACTIVE state bit was cleared
179 * could have logged many dquots, so they'd have higher LSNs than
180 * the first QUOTAOFF log record does. If we happen to crash when
181 * the tail of the log has gone past the QUOTAOFF record, but
182 * before the last dquot modification, those dquots __will__
183 * recover, and that's not good.
184 *
185 * So, we have QUOTAOFF start and end logitems; the start
186 * logitem won't get overwritten until the end logitem appears...
187 */
David Chinnercb6edc22008-04-10 12:20:45 +1000188 error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
189 if (error) {
190 /* We're screwed now. Shutdown is the only option. */
191 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000192 goto out_unlock;
David Chinnercb6edc22008-04-10 12:20:45 +1000193 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
195 /*
Chandra Seetharamanc31ad432013-07-10 18:00:36 -0500196 * If all quotas are completely turned off, close shop.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 */
Chandra Seetharamanc31ad432013-07-10 18:00:36 -0500198 if (mp->m_qflags == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000199 mutex_unlock(&q->qi_quotaofflock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 xfs_qm_destroy_quotainfo(mp);
Eric Sandeend99831f2014-06-22 15:03:54 +1000201 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 }
203
204 /*
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000205 * Release our quotainode references if we don't need them anymore.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 */
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000207 if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) {
208 IRELE(q->qi_uquotaip);
209 q->qi_uquotaip = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500211 if ((dqtype & XFS_QMOPT_GQUOTA) && q->qi_gquotaip) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000212 IRELE(q->qi_gquotaip);
213 q->qi_gquotaip = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 }
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -0500215 if ((dqtype & XFS_QMOPT_PQUOTA) && q->qi_pquotaip) {
216 IRELE(q->qi_pquotaip);
217 q->qi_pquotaip = NULL;
218 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000220out_unlock:
221 mutex_unlock(&q->qi_quotaofflock);
222 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223}
224
Christoph Hellwig5d188982010-07-20 17:51:31 +1000225STATIC int
226xfs_qm_scall_trunc_qfile(
227 struct xfs_mount *mp,
228 xfs_ino_t ino)
229{
230 struct xfs_inode *ip;
231 struct xfs_trans *tp;
232 int error;
233
234 if (ino == NULLFSINO)
235 return 0;
236
237 error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
238 if (error)
239 return error;
240
241 xfs_ilock(ip, XFS_IOLOCK_EXCL);
242
243 tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE);
Jie Liu3d3c8b52013-08-12 20:49:59 +1000244 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000245 if (error) {
246 xfs_trans_cancel(tp, 0);
247 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
248 goto out_put;
249 }
250
251 xfs_ilock(ip, XFS_ILOCK_EXCL);
Christoph Hellwigddc34152011-09-19 15:00:54 +0000252 xfs_trans_ijoin(tp, ip, 0);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000253
Christoph Hellwig673e8e52011-12-18 20:00:04 +0000254 ip->i_d.di_size = 0;
Christoph Hellwig673e8e52011-12-18 20:00:04 +0000255 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
256
257 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000258 if (error) {
259 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
260 XFS_TRANS_ABORT);
261 goto out_unlock;
262 }
263
Christoph Hellwig673e8e52011-12-18 20:00:04 +0000264 ASSERT(ip->i_d.di_nextents == 0);
265
Dave Chinnerdcd79a12010-09-28 12:27:25 +1000266 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
Christoph Hellwig5d188982010-07-20 17:51:31 +1000267 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
268
269out_unlock:
270 xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
271out_put:
272 IRELE(ip);
273 return error;
274}
275
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100276int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277xfs_qm_scall_trunc_qfiles(
278 xfs_mount_t *mp,
279 uint flags)
280{
Dave Chinner24513372014-06-25 14:58:08 +1000281 int error = -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282
Eric Sandeenf58522c2014-05-05 17:27:06 +1000283 if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0 ||
284 (flags & ~XFS_DQ_ALLTYPES)) {
Eric Sandeen08e96e12013-10-11 20:59:05 -0500285 xfs_debug(mp, "%s: flags=%x m_qflags=%x",
Dave Chinner82211122011-03-07 10:07:35 +1100286 __func__, flags, mp->m_qflags);
Dave Chinner24513372014-06-25 14:58:08 +1000287 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 }
289
Jie Liuc61a9e32013-11-22 14:04:00 +0800290 if (flags & XFS_DQ_USER) {
Christoph Hellwig5d188982010-07-20 17:51:31 +1000291 error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
Jie Liuc61a9e32013-11-22 14:04:00 +0800292 if (error)
293 return error;
294 }
295 if (flags & XFS_DQ_GROUP) {
296 error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
297 if (error)
298 return error;
299 }
Chandra Seetharamand892d582013-07-19 17:36:02 -0500300 if (flags & XFS_DQ_PROJ)
Jie Liuc61a9e32013-11-22 14:04:00 +0800301 error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_pquotino);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302
Jie Liuc61a9e32013-11-22 14:04:00 +0800303 return error;
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) {
Eric Sandeen08e96e12013-10-11 20:59:05 -0500329 xfs_debug(mp, "%s: zero flags, m_qflags=%x",
Dave Chinner82211122011-03-07 10:07:35 +1100330 __func__, mp->m_qflags);
Dave Chinner24513372014-06-25 14:58:08 +1000331 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 }
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,
Eric Sandeen08e96e12013-10-11 20:59:05 -0500352 "%s: Can't enforce without acct, flags=%x sbflags=%x",
Dave Chinner82211122011-03-07 10:07:35 +1100353 __func__, flags, mp->m_sb.sb_qflags);
Dave Chinner24513372014-06-25 14:58:08 +1000354 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 }
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)
Dave Chinner24513372014-06-25 14:58:08 +1000360 return -EEXIST;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
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)
Dave Chinner24513372014-06-25 14:58:08 +1000375 return -EEXIST;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 sbflags |= XFS_SB_QFLAGS;
377
378 if ((error = xfs_qm_write_sb_changes(mp, sbflags)))
Eric Sandeend99831f2014-06-22 15:03:54 +1000379 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 /*
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)
Eric Sandeend99831f2014-06-22 15:03:54 +1000390 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391
392 if (! XFS_IS_QUOTA_RUNNING(mp))
Dave Chinner24513372014-06-25 14:58:08 +1000393 return -ESRCH;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394
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
Eric Sandeend99831f2014-06-22 15:03:54 +1000402 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403}
404
405
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406/*
407 * Return quota status information, such as uquota-off, enforcements, etc.
Chandra Seetharaman5d5e3d52013-08-06 17:27:08 -0500408 * for Q_XGETQSTAT command.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 */
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100410int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411xfs_qm_scall_getqstat(
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000412 struct xfs_mount *mp,
413 struct fs_quota_stat *out)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414{
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000415 struct xfs_quotainfo *q = mp->m_quotainfo;
Chandra Seetharaman113a5682013-06-27 17:25:07 -0500416 struct xfs_inode *uip = NULL;
417 struct xfs_inode *gip = NULL;
Chandra Seetharamand892d582013-07-19 17:36:02 -0500418 struct xfs_inode *pip = NULL;
Chandra Seetharaman113a5682013-06-27 17:25:07 -0500419 bool tempuqip = false;
420 bool tempgqip = false;
Chandra Seetharamand892d582013-07-19 17:36:02 -0500421 bool temppqip = false;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 memset(out, 0, sizeof(fs_quota_stat_t));
424
425 out->qs_version = FS_QSTAT_VERSION;
Eric Sandeen62118702008-03-06 13:44:28 +1100426 if (!xfs_sb_version_hasquota(&mp->m_sb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 out->qs_uquota.qfs_ino = NULLFSINO;
428 out->qs_gquota.qfs_ino = NULLFSINO;
Eric Sandeend99831f2014-06-22 15:03:54 +1000429 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 }
Chandra Seetharamand892d582013-07-19 17:36:02 -0500431
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
433 (XFS_ALL_QUOTA_ACCT|
434 XFS_ALL_QUOTA_ENFD));
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000435 if (q) {
436 uip = q->qi_uquotaip;
437 gip = q->qi_gquotaip;
Chandra Seetharamand892d582013-07-19 17:36:02 -0500438 pip = q->qi_pquotaip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 }
440 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
441 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
Dave Chinner7b6259e2010-06-24 11:35:17 +1000442 0, 0, &uip) == 0)
Thiago Farina667a9292012-11-12 21:32:59 -0200443 tempuqip = true;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 }
445 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
446 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
Dave Chinner7b6259e2010-06-24 11:35:17 +1000447 0, 0, &gip) == 0)
Thiago Farina667a9292012-11-12 21:32:59 -0200448 tempgqip = true;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 }
Chandra Seetharamand892d582013-07-19 17:36:02 -0500450 /*
451 * Q_XGETQSTAT doesn't have room for both group and project quotas.
452 * So, allow the project quota values to be copied out only if
453 * there is no group quota information available.
454 */
455 if (!gip) {
456 if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
457 if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
458 0, 0, &pip) == 0)
459 temppqip = true;
460 }
461 } else
462 pip = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 if (uip) {
Chandra Seetharamand892d582013-07-19 17:36:02 -0500464 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
466 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
467 if (tempuqip)
Christoph Hellwig43355092008-03-27 18:01:08 +1100468 IRELE(uip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 }
Chandra Seetharamand892d582013-07-19 17:36:02 -0500470
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 if (gip) {
Chandra Seetharamand892d582013-07-19 17:36:02 -0500472 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
474 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
475 if (tempgqip)
Christoph Hellwig43355092008-03-27 18:01:08 +1100476 IRELE(gip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 }
Chandra Seetharamand892d582013-07-19 17:36:02 -0500478 if (pip) {
479 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
480 out->qs_gquota.qfs_nblks = pip->i_d.di_nblocks;
481 out->qs_gquota.qfs_nextents = pip->i_d.di_nextents;
482 if (temppqip)
483 IRELE(pip);
484 }
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000485 if (q) {
486 out->qs_incoredqs = q->qi_dquots;
487 out->qs_btimelimit = q->qi_btimelimit;
488 out->qs_itimelimit = q->qi_itimelimit;
489 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
490 out->qs_bwarnlimit = q->qi_bwarnlimit;
491 out->qs_iwarnlimit = q->qi_iwarnlimit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 }
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000493 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494}
495
Chandra Seetharaman5d5e3d52013-08-06 17:27:08 -0500496/*
497 * Return quota status information, such as uquota-off, enforcements, etc.
498 * for Q_XGETQSTATV command, to support separate project quota field.
499 */
500int
501xfs_qm_scall_getqstatv(
502 struct xfs_mount *mp,
503 struct fs_quota_statv *out)
504{
505 struct xfs_quotainfo *q = mp->m_quotainfo;
506 struct xfs_inode *uip = NULL;
507 struct xfs_inode *gip = NULL;
508 struct xfs_inode *pip = NULL;
509 bool tempuqip = false;
510 bool tempgqip = false;
511 bool temppqip = false;
512
513 if (!xfs_sb_version_hasquota(&mp->m_sb)) {
514 out->qs_uquota.qfs_ino = NULLFSINO;
515 out->qs_gquota.qfs_ino = NULLFSINO;
516 out->qs_pquota.qfs_ino = NULLFSINO;
Eric Sandeend99831f2014-06-22 15:03:54 +1000517 return 0;
Chandra Seetharaman5d5e3d52013-08-06 17:27:08 -0500518 }
519
520 out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
521 (XFS_ALL_QUOTA_ACCT|
522 XFS_ALL_QUOTA_ENFD));
523 out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
524 out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
525 out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino;
526
527 if (q) {
528 uip = q->qi_uquotaip;
529 gip = q->qi_gquotaip;
530 pip = q->qi_pquotaip;
531 }
532 if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
533 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
534 0, 0, &uip) == 0)
535 tempuqip = true;
536 }
537 if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
538 if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
539 0, 0, &gip) == 0)
540 tempgqip = true;
541 }
542 if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
543 if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
544 0, 0, &pip) == 0)
545 temppqip = true;
546 }
547 if (uip) {
548 out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
549 out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
550 if (tempuqip)
551 IRELE(uip);
552 }
553
554 if (gip) {
555 out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
556 out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
557 if (tempgqip)
558 IRELE(gip);
559 }
560 if (pip) {
561 out->qs_pquota.qfs_nblks = pip->i_d.di_nblocks;
562 out->qs_pquota.qfs_nextents = pip->i_d.di_nextents;
563 if (temppqip)
564 IRELE(pip);
565 }
566 if (q) {
567 out->qs_incoredqs = q->qi_dquots;
568 out->qs_btimelimit = q->qi_btimelimit;
569 out->qs_itimelimit = q->qi_itimelimit;
570 out->qs_rtbtimelimit = q->qi_rtbtimelimit;
571 out->qs_bwarnlimit = q->qi_bwarnlimit;
572 out->qs_iwarnlimit = q->qi_iwarnlimit;
573 }
574 return 0;
575}
576
Christoph Hellwigc472b432010-05-06 17:05:17 -0400577#define XFS_DQ_MASK \
578 (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK)
579
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580/*
581 * Adjust quota limits, and start/stop timers accordingly.
582 */
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100583int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584xfs_qm_scall_setqlim(
Brian Fosterb1366452013-03-18 10:51:46 -0400585 struct xfs_mount *mp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 xfs_dqid_t id,
587 uint type,
588 fs_disk_quota_t *newlim)
589{
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000590 struct xfs_quotainfo *q = mp->m_quotainfo;
Brian Fosterb1366452013-03-18 10:51:46 -0400591 struct xfs_disk_dquot *ddq;
592 struct xfs_dquot *dqp;
593 struct xfs_trans *tp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 int error;
595 xfs_qcnt_t hard, soft;
596
Christoph Hellwigc472b432010-05-06 17:05:17 -0400597 if (newlim->d_fieldmask & ~XFS_DQ_MASK)
Dave Chinner24513372014-06-25 14:58:08 +1000598 return -EINVAL;
Christoph Hellwigc472b432010-05-06 17:05:17 -0400599 if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0)
600 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601
Dave Chinnerf6481672013-05-21 18:02:00 +1000602 /*
603 * We don't want to race with a quotaoff so take the quotaoff lock.
604 * We don't hold an inode lock, so there's nothing else to stop
605 * a quotaoff from happening.
606 */
607 mutex_lock(&q->qi_quotaofflock);
608
609 /*
610 * Get the dquot (locked) before we start, as we need to do a
611 * transaction to allocate it if it doesn't exist. Once we have the
612 * dquot, unlock it so we can start the next transaction safely. We hold
613 * a reference to the dquot, so it's safe to do this unlock/lock without
614 * it being reclaimed in the mean time.
615 */
616 error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp);
617 if (error) {
Dave Chinner24513372014-06-25 14:58:08 +1000618 ASSERT(error != -ENOENT);
Dave Chinnerf6481672013-05-21 18:02:00 +1000619 goto out_unlock;
620 }
621 xfs_dqunlock(dqp);
622
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
Jie Liu3d3c8b52013-08-12 20:49:59 +1000624 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_setqlim, 0, 0);
Jeff Liuf0f2df92013-01-28 21:26:49 +0800625 if (error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 xfs_trans_cancel(tp, 0);
Dave Chinnerf6481672013-05-21 18:02:00 +1000627 goto out_rele;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 }
629
Dave Chinnerf6481672013-05-21 18:02:00 +1000630 xfs_dqlock(dqp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 xfs_trans_dqjoin(tp, dqp);
632 ddq = &dqp->q_core;
633
634 /*
635 * Make sure that hardlimits are >= soft limits before changing.
636 */
637 hard = (newlim->d_fieldmask & FS_DQ_BHARD) ?
638 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100639 be64_to_cpu(ddq->d_blk_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ?
641 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100642 be64_to_cpu(ddq->d_blk_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 if (hard == 0 || hard >= soft) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100644 ddq->d_blk_hardlimit = cpu_to_be64(hard);
645 ddq->d_blk_softlimit = cpu_to_be64(soft);
Brian Fosterb1366452013-03-18 10:51:46 -0400646 xfs_dquot_set_prealloc_limits(dqp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647 if (id == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000648 q->qi_bhardlimit = hard;
649 q->qi_bsoftlimit = soft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 }
651 } else {
Eric Sandeen08e96e12013-10-11 20:59:05 -0500652 xfs_debug(mp, "blkhard %Ld < blksoft %Ld", hard, soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 }
654 hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ?
655 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100656 be64_to_cpu(ddq->d_rtb_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ?
658 (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100659 be64_to_cpu(ddq->d_rtb_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 if (hard == 0 || hard >= soft) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100661 ddq->d_rtb_hardlimit = cpu_to_be64(hard);
662 ddq->d_rtb_softlimit = cpu_to_be64(soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 if (id == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000664 q->qi_rtbhardlimit = hard;
665 q->qi_rtbsoftlimit = soft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 }
667 } else {
Eric Sandeen08e96e12013-10-11 20:59:05 -0500668 xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld", hard, soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 }
670
671 hard = (newlim->d_fieldmask & FS_DQ_IHARD) ?
672 (xfs_qcnt_t) newlim->d_ino_hardlimit :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100673 be64_to_cpu(ddq->d_ino_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ?
675 (xfs_qcnt_t) newlim->d_ino_softlimit :
Christoph Hellwig1149d962005-11-02 15:01:12 +1100676 be64_to_cpu(ddq->d_ino_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 if (hard == 0 || hard >= soft) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100678 ddq->d_ino_hardlimit = cpu_to_be64(hard);
679 ddq->d_ino_softlimit = cpu_to_be64(soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 if (id == 0) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000681 q->qi_ihardlimit = hard;
682 q->qi_isoftlimit = soft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 }
684 } else {
Eric Sandeen08e96e12013-10-11 20:59:05 -0500685 xfs_debug(mp, "ihard %Ld < isoft %Ld", hard, soft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 }
687
Nathan Scott754002b2005-06-21 15:49:06 +1000688 /*
689 * Update warnings counter(s) if requested
690 */
691 if (newlim->d_fieldmask & FS_DQ_BWARNS)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100692 ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns);
Nathan Scott754002b2005-06-21 15:49:06 +1000693 if (newlim->d_fieldmask & FS_DQ_IWARNS)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100694 ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns);
Nathan Scott754002b2005-06-21 15:49:06 +1000695 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100696 ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns);
Nathan Scott754002b2005-06-21 15:49:06 +1000697
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 if (id == 0) {
699 /*
700 * Timelimits for the super user set the relative time
701 * the other users can be over quota for this file system.
702 * If it is zero a default is used. Ditto for the default
Nathan Scott754002b2005-06-21 15:49:06 +1000703 * soft and hard limit values (already done, above), and
704 * for warnings.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 */
706 if (newlim->d_fieldmask & FS_DQ_BTIMER) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000707 q->qi_btimelimit = newlim->d_btimer;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100708 ddq->d_btimer = cpu_to_be32(newlim->d_btimer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 }
710 if (newlim->d_fieldmask & FS_DQ_ITIMER) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000711 q->qi_itimelimit = newlim->d_itimer;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100712 ddq->d_itimer = cpu_to_be32(newlim->d_itimer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 }
714 if (newlim->d_fieldmask & FS_DQ_RTBTIMER) {
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000715 q->qi_rtbtimelimit = newlim->d_rtbtimer;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100716 ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 }
Nathan Scott754002b2005-06-21 15:49:06 +1000718 if (newlim->d_fieldmask & FS_DQ_BWARNS)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000719 q->qi_bwarnlimit = newlim->d_bwarns;
Nathan Scott754002b2005-06-21 15:49:06 +1000720 if (newlim->d_fieldmask & FS_DQ_IWARNS)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000721 q->qi_iwarnlimit = newlim->d_iwarns;
Nathan Scott754002b2005-06-21 15:49:06 +1000722 if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000723 q->qi_rtbwarnlimit = newlim->d_rtbwarns;
Nathan Scott754002b2005-06-21 15:49:06 +1000724 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 /*
726 * If the user is now over quota, start the timelimit.
727 * The user will not be 'warned'.
728 * Note that we keep the timers ticking, whether enforcement
729 * is on or off. We don't really want to bother with iterating
730 * over all ondisk dquots and turning the timers on/off.
731 */
732 xfs_qm_adjust_dqtimers(mp, ddq);
733 }
734 dqp->dq_flags |= XFS_DQ_DIRTY;
735 xfs_trans_log_dquot(tp, dqp);
736
David Chinnere5720ee2008-04-10 12:21:18 +1000737 error = xfs_trans_commit(tp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738
Dave Chinnerf6481672013-05-21 18:02:00 +1000739out_rele:
740 xfs_qm_dqrele(dqp);
741out_unlock:
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000742 mutex_unlock(&q->qi_quotaofflock);
David Chinnere5720ee2008-04-10 12:21:18 +1000743 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744}
745
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746STATIC int
747xfs_qm_log_quotaoff_end(
748 xfs_mount_t *mp,
749 xfs_qoff_logitem_t *startqoff,
750 uint flags)
751{
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000752 xfs_trans_t *tp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 int error;
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000754 xfs_qoff_logitem_t *qoffi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755
756 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
757
Jie Liu3d3c8b52013-08-12 20:49:59 +1000758 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_equotaoff, 0, 0);
Jeff Liu762d7ba2013-01-28 21:27:21 +0800759 if (error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 xfs_trans_cancel(tp, 0);
Eric Sandeend99831f2014-06-22 15:03:54 +1000761 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 }
763
764 qoffi = xfs_trans_get_qoff_item(tp, startqoff,
765 flags & XFS_ALL_QUOTA_ACCT);
766 xfs_trans_log_quotaoff_item(tp, qoffi);
767
768 /*
769 * We have to make sure that the transaction is secure on disk before we
770 * return and actually stop quota accounting. So, make it synchronous.
771 * We don't care about quotoff's performance.
772 */
773 xfs_trans_set_sync(tp);
Eric Sandeen1c72bf92007-05-08 13:48:42 +1000774 error = xfs_trans_commit(tp, 0);
Eric Sandeend99831f2014-06-22 15:03:54 +1000775 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776}
777
778
779STATIC int
780xfs_qm_log_quotaoff(
781 xfs_mount_t *mp,
782 xfs_qoff_logitem_t **qoffstartp,
783 uint flags)
784{
785 xfs_trans_t *tp;
786 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 xfs_qoff_logitem_t *qoffi=NULL;
788 uint oldsbqflag=0;
789
790 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
Jie Liu3d3c8b52013-08-12 20:49:59 +1000791 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_quotaoff, 0, 0);
Jeff Liua1bd9552013-01-28 21:27:15 +0800792 if (error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 goto error0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794
795 qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
796 xfs_trans_log_quotaoff_item(tp, qoffi);
797
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000798 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799 oldsbqflag = mp->m_sb.sb_qflags;
800 mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000801 spin_unlock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802
803 xfs_mod_sb(tp, XFS_SB_QFLAGS);
804
805 /*
806 * We have to make sure that the transaction is secure on disk before we
807 * return and actually stop quota accounting. So, make it synchronous.
808 * We don't care about quotoff's performance.
809 */
810 xfs_trans_set_sync(tp);
Eric Sandeen1c72bf92007-05-08 13:48:42 +1000811 error = xfs_trans_commit(tp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812
813error0:
814 if (error) {
815 xfs_trans_cancel(tp, 0);
816 /*
817 * No one else is modifying sb_qflags, so this is OK.
818 * We still hold the quotaofflock.
819 */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000820 spin_lock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821 mp->m_sb.sb_qflags = oldsbqflag;
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000822 spin_unlock(&mp->m_sb_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823 }
824 *qoffstartp = qoffi;
Eric Sandeend99831f2014-06-22 15:03:54 +1000825 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826}
827
828
Christoph Hellwig18535a72012-02-20 02:28:16 +0000829int
830xfs_qm_scall_getquota(
831 struct xfs_mount *mp,
832 xfs_dqid_t id,
833 uint type,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 struct fs_disk_quota *dst)
835{
Christoph Hellwig18535a72012-02-20 02:28:16 +0000836 struct xfs_dquot *dqp;
837 int error;
838
839 /*
840 * Try to get the dquot. We don't want it allocated on disk, so
841 * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't
842 * exist, we'll get ENOENT back.
843 */
844 error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp);
845 if (error)
846 return error;
847
848 /*
849 * If everything's NULL, this dquot doesn't quite exist as far as
850 * our utility programs are concerned.
851 */
852 if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
Dave Chinner24513372014-06-25 14:58:08 +1000853 error = -ENOENT;
Christoph Hellwig18535a72012-02-20 02:28:16 +0000854 goto out_put;
855 }
856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 memset(dst, 0, sizeof(*dst));
Christoph Hellwig18535a72012-02-20 02:28:16 +0000858 dst->d_version = FS_DQUOT_VERSION;
859 dst->d_flags = xfs_qm_export_qtype_flags(dqp->q_core.d_flags);
860 dst->d_id = be32_to_cpu(dqp->q_core.d_id);
Christoph Hellwig1149d962005-11-02 15:01:12 +1100861 dst->d_blk_hardlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000862 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_hardlimit));
Christoph Hellwig1149d962005-11-02 15:01:12 +1100863 dst->d_blk_softlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000864 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_blk_softlimit));
865 dst->d_ino_hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
866 dst->d_ino_softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
Christoph Hellwig89605012012-02-20 02:28:17 +0000867 dst->d_bcount = XFS_FSB_TO_BB(mp, dqp->q_res_bcount);
868 dst->d_icount = dqp->q_res_icount;
Christoph Hellwig18535a72012-02-20 02:28:16 +0000869 dst->d_btimer = be32_to_cpu(dqp->q_core.d_btimer);
870 dst->d_itimer = be32_to_cpu(dqp->q_core.d_itimer);
871 dst->d_iwarns = be16_to_cpu(dqp->q_core.d_iwarns);
872 dst->d_bwarns = be16_to_cpu(dqp->q_core.d_bwarns);
Christoph Hellwig1149d962005-11-02 15:01:12 +1100873 dst->d_rtb_hardlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000874 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_hardlimit));
Christoph Hellwig1149d962005-11-02 15:01:12 +1100875 dst->d_rtb_softlimit =
Christoph Hellwig18535a72012-02-20 02:28:16 +0000876 XFS_FSB_TO_BB(mp, be64_to_cpu(dqp->q_core.d_rtb_softlimit));
Christoph Hellwig89605012012-02-20 02:28:17 +0000877 dst->d_rtbcount = XFS_FSB_TO_BB(mp, dqp->q_res_rtbcount);
Christoph Hellwig18535a72012-02-20 02:28:16 +0000878 dst->d_rtbtimer = be32_to_cpu(dqp->q_core.d_rtbtimer);
879 dst->d_rtbwarns = be16_to_cpu(dqp->q_core.d_rtbwarns);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880
881 /*
882 * Internally, we don't reset all the timers when quota enforcement
Nathan Scottc41564b2006-03-29 08:55:14 +1000883 * gets turned off. No need to confuse the user level code,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884 * so return zeroes in that case.
885 */
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500886 if ((!XFS_IS_UQUOTA_ENFORCED(mp) &&
887 dqp->q_core.d_flags == XFS_DQ_USER) ||
888 (!XFS_IS_GQUOTA_ENFORCED(mp) &&
889 dqp->q_core.d_flags == XFS_DQ_GROUP) ||
890 (!XFS_IS_PQUOTA_ENFORCED(mp) &&
891 dqp->q_core.d_flags == XFS_DQ_PROJ)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 dst->d_btimer = 0;
893 dst->d_itimer = 0;
894 dst->d_rtbtimer = 0;
895 }
896
897#ifdef DEBUG
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200898 if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) ||
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500899 (XFS_IS_GQUOTA_ENFORCED(mp) && dst->d_flags == FS_GROUP_QUOTA) ||
900 (XFS_IS_PQUOTA_ENFORCED(mp) && dst->d_flags == FS_PROJ_QUOTA)) &&
Kouta Ooizumie6d29422007-05-08 13:49:33 +1000901 dst->d_id != 0) {
Brian Fosterf7555032012-12-21 10:45:17 -0500902 if ((dst->d_bcount > dst->d_blk_softlimit) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 (dst->d_blk_softlimit > 0)) {
904 ASSERT(dst->d_btimer != 0);
905 }
Brian Fosterf7555032012-12-21 10:45:17 -0500906 if ((dst->d_icount > dst->d_ino_softlimit) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 (dst->d_ino_softlimit > 0)) {
908 ASSERT(dst->d_itimer != 0);
909 }
910 }
911#endif
Christoph Hellwig18535a72012-02-20 02:28:16 +0000912out_put:
913 xfs_qm_dqput(dqp);
914 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915}
916
917STATIC uint
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918xfs_qm_export_qtype_flags(
919 uint flags)
920{
921 /*
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000922 * Can't be more than one, or none.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 */
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200924 ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) !=
925 (FS_PROJ_QUOTA | FS_USER_QUOTA));
926 ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) !=
927 (FS_PROJ_QUOTA | FS_GROUP_QUOTA));
928 ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) !=
929 (FS_USER_QUOTA | FS_GROUP_QUOTA));
930 ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931
932 return (flags & XFS_DQ_USER) ?
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200933 FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
934 FS_PROJ_QUOTA : FS_GROUP_QUOTA;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935}
936
937STATIC uint
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938xfs_qm_export_flags(
939 uint flags)
940{
941 uint uflags;
942
943 uflags = 0;
944 if (flags & XFS_UQUOTA_ACCT)
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200945 uflags |= FS_QUOTA_UDQ_ACCT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 if (flags & XFS_GQUOTA_ACCT)
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200947 uflags |= FS_QUOTA_GDQ_ACCT;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500948 if (flags & XFS_PQUOTA_ACCT)
949 uflags |= FS_QUOTA_PDQ_ACCT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950 if (flags & XFS_UQUOTA_ENFD)
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200951 uflags |= FS_QUOTA_UDQ_ENFD;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500952 if (flags & XFS_GQUOTA_ENFD)
953 uflags |= FS_QUOTA_GDQ_ENFD;
954 if (flags & XFS_PQUOTA_ENFD)
955 uflags |= FS_QUOTA_PDQ_ENFD;
Eric Sandeend99831f2014-06-22 15:03:54 +1000956 return uflags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957}
958
959
Christoph Hellwigfe588ed2009-06-08 15:35:27 +0200960STATIC int
961xfs_dqrele_inode(
962 struct xfs_inode *ip,
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}