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Christoph Hellwigfcafb712009-02-09 08:47:34 +01001/*
2 * Copyright (c) 2008, Christoph Hellwig
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#include "xfs.h"
Dave Chinner6ca1c902013-08-12 20:49:26 +100019#include "xfs_format.h"
Dave Chinner239880e2013-10-23 10:50:10 +110020#include "xfs_log_format.h"
Dave Chinner7fd36c42013-08-12 20:49:32 +100021#include "xfs_trans_resv.h"
Christoph Hellwigfcafb712009-02-09 08:47:34 +010022#include "xfs_mount.h"
Dave Chinnera4fbe6a2013-10-23 10:51:50 +110023#include "xfs_inode.h"
Christoph Hellwigfcafb712009-02-09 08:47:34 +010024#include "xfs_quota.h"
Christoph Hellwigfcafb712009-02-09 08:47:34 +010025#include "xfs_trans.h"
Jan Kara5d3684c2014-11-19 12:03:59 +010026#include "xfs_trace.h"
27#include "xfs_icache.h"
Alex Elder06f8e2d2011-08-12 13:57:55 -050028#include "xfs_qm.h"
Christoph Hellwigfcafb712009-02-09 08:47:34 +010029#include <linux/quota.h>
30
31
Jan Kara5d3684c2014-11-19 12:03:59 +010032static void
33xfs_qm_fill_state(
34 struct qc_type_state *tstate,
35 struct xfs_mount *mp,
36 struct xfs_inode *ip,
37 xfs_ino_t ino)
38{
39 struct xfs_quotainfo *q = mp->m_quotainfo;
40 bool tempqip = false;
41
42 tstate->ino = ino;
43 if (!ip && ino == NULLFSINO)
44 return;
45 if (!ip) {
46 if (xfs_iget(mp, NULL, ino, 0, 0, &ip))
47 return;
48 tempqip = true;
49 }
50 tstate->flags |= QCI_SYSFILE;
51 tstate->blocks = ip->i_d.di_nblocks;
52 tstate->nextents = ip->i_d.di_nextents;
53 tstate->spc_timelimit = q->qi_btimelimit;
54 tstate->ino_timelimit = q->qi_itimelimit;
55 tstate->rt_spc_timelimit = q->qi_rtbtimelimit;
56 tstate->spc_warnlimit = q->qi_bwarnlimit;
57 tstate->ino_warnlimit = q->qi_iwarnlimit;
58 tstate->rt_spc_warnlimit = q->qi_rtbwarnlimit;
59 if (tempqip)
60 IRELE(ip);
61}
62
63/*
64 * Return quota status information, such as enforcements, quota file inode
65 * numbers etc.
66 */
67static int
68xfs_fs_get_quota_state(
69 struct super_block *sb,
70 struct qc_state *state)
71{
72 struct xfs_mount *mp = XFS_M(sb);
73 struct xfs_quotainfo *q = mp->m_quotainfo;
74
75 memset(state, 0, sizeof(*state));
76 if (!XFS_IS_QUOTA_RUNNING(mp))
77 return 0;
78 state->s_incoredqs = q->qi_dquots;
79 if (XFS_IS_UQUOTA_RUNNING(mp))
80 state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED;
81 if (XFS_IS_UQUOTA_ENFORCED(mp))
82 state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED;
83 if (XFS_IS_GQUOTA_RUNNING(mp))
84 state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED;
85 if (XFS_IS_GQUOTA_ENFORCED(mp))
86 state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED;
87 if (XFS_IS_PQUOTA_RUNNING(mp))
88 state->s_state[PRJQUOTA].flags |= QCI_ACCT_ENABLED;
89 if (XFS_IS_PQUOTA_ENFORCED(mp))
90 state->s_state[PRJQUOTA].flags |= QCI_LIMITS_ENFORCED;
91
92 xfs_qm_fill_state(&state->s_state[USRQUOTA], mp, q->qi_uquotaip,
93 mp->m_sb.sb_uquotino);
94 xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp, q->qi_gquotaip,
95 mp->m_sb.sb_gquotino);
96 xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp, q->qi_pquotaip,
97 mp->m_sb.sb_pquotino);
98 return 0;
99}
100
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100101STATIC int
102xfs_quota_type(int type)
103{
104 switch (type) {
105 case USRQUOTA:
106 return XFS_DQ_USER;
107 case GRPQUOTA:
108 return XFS_DQ_GROUP;
109 default:
110 return XFS_DQ_PROJ;
111 }
112}
113
Jan Karac14cad92014-12-16 13:07:45 +0100114#define XFS_QC_SETINFO_MASK (QC_TIMER_MASK | QC_WARNS_MASK)
115
116/*
117 * Adjust quota timers & warnings
118 */
119static int
120xfs_fs_set_info(
121 struct super_block *sb,
122 int type,
123 struct qc_info *info)
124{
125 struct xfs_mount *mp = XFS_M(sb);
126 struct qc_dqblk newlim;
127
128 if (sb->s_flags & MS_RDONLY)
129 return -EROFS;
130 if (!XFS_IS_QUOTA_RUNNING(mp))
131 return -ENOSYS;
132 if (!XFS_IS_QUOTA_ON(mp))
133 return -ESRCH;
134 if (info->i_fieldmask & ~XFS_QC_SETINFO_MASK)
135 return -EINVAL;
136 if ((info->i_fieldmask & XFS_QC_SETINFO_MASK) == 0)
137 return 0;
138
139 newlim.d_fieldmask = info->i_fieldmask;
140 newlim.d_spc_timer = info->i_spc_timelimit;
141 newlim.d_ino_timer = info->i_ino_timelimit;
142 newlim.d_rt_spc_timer = info->i_rt_spc_timelimit;
143 newlim.d_ino_warns = info->i_ino_warnlimit;
144 newlim.d_spc_warns = info->i_spc_warnlimit;
145 newlim.d_rt_spc_warns = info->i_rt_spc_warnlimit;
146
147 return xfs_qm_scall_setqlim(mp, 0, xfs_quota_type(type), &newlim);
148}
149
Jan Kara38e478c2014-10-08 15:56:21 +0200150static unsigned int
151xfs_quota_flags(unsigned int uflags)
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100152{
Jan Kara38e478c2014-10-08 15:56:21 +0200153 unsigned int flags = 0;
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100154
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200155 if (uflags & FS_QUOTA_UDQ_ACCT)
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100156 flags |= XFS_UQUOTA_ACCT;
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200157 if (uflags & FS_QUOTA_PDQ_ACCT)
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100158 flags |= XFS_PQUOTA_ACCT;
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200159 if (uflags & FS_QUOTA_GDQ_ACCT)
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100160 flags |= XFS_GQUOTA_ACCT;
Christoph Hellwigade7ce32010-06-04 10:56:01 +0200161 if (uflags & FS_QUOTA_UDQ_ENFD)
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100162 flags |= XFS_UQUOTA_ENFD;
Chandra Seetharaman83e782e2013-06-27 17:25:10 -0500163 if (uflags & FS_QUOTA_GDQ_ENFD)
164 flags |= XFS_GQUOTA_ENFD;
165 if (uflags & FS_QUOTA_PDQ_ENFD)
166 flags |= XFS_PQUOTA_ENFD;
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100167
Jan Kara38e478c2014-10-08 15:56:21 +0200168 return flags;
169}
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100170
Jan Kara38e478c2014-10-08 15:56:21 +0200171STATIC int
172xfs_quota_enable(
173 struct super_block *sb,
174 unsigned int uflags)
175{
176 struct xfs_mount *mp = XFS_M(sb);
177
178 if (sb->s_flags & MS_RDONLY)
179 return -EROFS;
180 if (!XFS_IS_QUOTA_RUNNING(mp))
181 return -ENOSYS;
182
183 return xfs_qm_scall_quotaon(mp, xfs_quota_flags(uflags));
184}
185
186STATIC int
187xfs_quota_disable(
188 struct super_block *sb,
189 unsigned int uflags)
190{
191 struct xfs_mount *mp = XFS_M(sb);
192
193 if (sb->s_flags & MS_RDONLY)
194 return -EROFS;
195 if (!XFS_IS_QUOTA_RUNNING(mp))
196 return -ENOSYS;
197 if (!XFS_IS_QUOTA_ON(mp))
198 return -EINVAL;
199
200 return xfs_qm_scall_quotaoff(mp, xfs_quota_flags(uflags));
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100201}
202
203STATIC int
Eric Sandeen9da93f92014-05-05 17:25:50 +1000204xfs_fs_rm_xquota(
205 struct super_block *sb,
206 unsigned int uflags)
207{
208 struct xfs_mount *mp = XFS_M(sb);
209 unsigned int flags = 0;
Dave Chinner24513372014-06-25 14:58:08 +1000210
Eric Sandeen9da93f92014-05-05 17:25:50 +1000211 if (sb->s_flags & MS_RDONLY)
212 return -EROFS;
213
214 if (XFS_IS_QUOTA_ON(mp))
215 return -EINVAL;
216
217 if (uflags & FS_USER_QUOTA)
218 flags |= XFS_DQ_USER;
219 if (uflags & FS_GROUP_QUOTA)
220 flags |= XFS_DQ_GROUP;
Jie Liu74dc93a2014-07-24 21:27:17 +1000221 if (uflags & FS_PROJ_QUOTA)
Eric Sandeen9da93f92014-05-05 17:25:50 +1000222 flags |= XFS_DQ_PROJ;
223
Dave Chinner24513372014-06-25 14:58:08 +1000224 return xfs_qm_scall_trunc_qfiles(mp, flags);
225}
Eric Sandeen9da93f92014-05-05 17:25:50 +1000226
227STATIC int
Christoph Hellwigb9b2dd32010-05-06 17:04:58 -0400228xfs_fs_get_dqblk(
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100229 struct super_block *sb,
Eric W. Biederman74a8a102012-09-16 02:07:49 -0700230 struct kqid qid,
Jan Kara14bf61f2014-10-09 16:03:13 +0200231 struct qc_dqblk *qdq)
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100232{
233 struct xfs_mount *mp = XFS_M(sb);
Eric Sandeen296c24e2016-02-08 11:27:38 +1100234 xfs_dqid_t id;
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100235
236 if (!XFS_IS_QUOTA_RUNNING(mp))
237 return -ENOSYS;
238 if (!XFS_IS_QUOTA_ON(mp))
239 return -ESRCH;
240
Eric Sandeen296c24e2016-02-08 11:27:38 +1100241 id = from_kqid(&init_user_ns, qid);
242 return xfs_qm_scall_getquota(mp, &id,
243 xfs_quota_type(qid.type), qdq, 0);
244}
245
246/* Return quota info for active quota >= this qid */
247STATIC int
248xfs_fs_get_nextdqblk(
249 struct super_block *sb,
250 struct kqid *qid,
251 struct qc_dqblk *qdq)
252{
253 int ret;
254 struct xfs_mount *mp = XFS_M(sb);
255 xfs_dqid_t id;
256
257 if (!XFS_IS_QUOTA_RUNNING(mp))
258 return -ENOSYS;
259 if (!XFS_IS_QUOTA_ON(mp))
260 return -ESRCH;
261
262 id = from_kqid(&init_user_ns, *qid);
263 ret = xfs_qm_scall_getquota(mp, &id,
264 xfs_quota_type(qid->type), qdq,
265 XFS_QMOPT_DQNEXT);
266 if (ret)
267 return ret;
268
269 /* ID may be different, so convert back what we got */
270 *qid = make_kqid(current_user_ns(), qid->type, id);
271 return 0;
272
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100273}
274
275STATIC int
Christoph Hellwigc472b432010-05-06 17:05:17 -0400276xfs_fs_set_dqblk(
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100277 struct super_block *sb,
Eric W. Biederman74a8a102012-09-16 02:07:49 -0700278 struct kqid qid,
Jan Kara14bf61f2014-10-09 16:03:13 +0200279 struct qc_dqblk *qdq)
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100280{
281 struct xfs_mount *mp = XFS_M(sb);
282
283 if (sb->s_flags & MS_RDONLY)
284 return -EROFS;
285 if (!XFS_IS_QUOTA_RUNNING(mp))
286 return -ENOSYS;
287 if (!XFS_IS_QUOTA_ON(mp))
288 return -ESRCH;
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100289
Dave Chinner24513372014-06-25 14:58:08 +1000290 return xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid),
Jan Kara14bf61f2014-10-09 16:03:13 +0200291 xfs_quota_type(qid.type), qdq);
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100292}
293
Alexey Dobriyan0d54b212009-09-21 17:01:09 -0700294const struct quotactl_ops xfs_quotactl_operations = {
Jan Kara5d3684c2014-11-19 12:03:59 +0100295 .get_state = xfs_fs_get_quota_state,
Jan Karac14cad92014-12-16 13:07:45 +0100296 .set_info = xfs_fs_set_info,
Jan Kara38e478c2014-10-08 15:56:21 +0200297 .quota_enable = xfs_quota_enable,
298 .quota_disable = xfs_quota_disable,
Eric Sandeen9da93f92014-05-05 17:25:50 +1000299 .rm_xquota = xfs_fs_rm_xquota,
Christoph Hellwigb9b2dd32010-05-06 17:04:58 -0400300 .get_dqblk = xfs_fs_get_dqblk,
Eric Sandeen296c24e2016-02-08 11:27:38 +1100301 .get_nextdqblk = xfs_fs_get_nextdqblk,
Christoph Hellwigc472b432010-05-06 17:05:17 -0400302 .set_dqblk = xfs_fs_set_dqblk,
Christoph Hellwigfcafb712009-02-09 08:47:34 +0100303};