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6#include "xfs.h"
7#include "xfs_shared.h"
8#include "xfs_format.h"
9#include "xfs_log_format.h"
10#include "xfs_trans_resv.h"
11#include "xfs_mount.h"
12#include "xfs_inode.h"
13#include "xfs_quota.h"
14#include "xfs_trans.h"
15#include "xfs_icache.h"
16#include "xfs_qm.h"
17
18
19static void
20xfs_qm_fill_state(
21 struct qc_type_state *tstate,
22 struct xfs_mount *mp,
23 struct xfs_inode *ip,
24 xfs_ino_t ino,
25 struct xfs_def_quota *defq)
26{
27 bool tempqip = false;
28
29 tstate->ino = ino;
30 if (!ip && ino == NULLFSINO)
31 return;
32 if (!ip) {
33 if (xfs_iget(mp, NULL, ino, 0, 0, &ip))
34 return;
35 tempqip = true;
36 }
37 tstate->flags |= QCI_SYSFILE;
38 tstate->blocks = ip->i_d.di_nblocks;
39 tstate->nextents = ip->i_df.if_nextents;
40 tstate->spc_timelimit = (u32)defq->blk.time;
41 tstate->ino_timelimit = (u32)defq->ino.time;
42 tstate->rt_spc_timelimit = (u32)defq->rtb.time;
43 tstate->spc_warnlimit = defq->blk.warn;
44 tstate->ino_warnlimit = defq->ino.warn;
45 tstate->rt_spc_warnlimit = defq->rtb.warn;
46 if (tempqip)
47 xfs_irele(ip);
48}
49
50
51
52
53
54static int
55xfs_fs_get_quota_state(
56 struct super_block *sb,
57 struct qc_state *state)
58{
59 struct xfs_mount *mp = XFS_M(sb);
60 struct xfs_quotainfo *q = mp->m_quotainfo;
61
62 memset(state, 0, sizeof(*state));
63 if (!XFS_IS_QUOTA_RUNNING(mp))
64 return 0;
65 state->s_incoredqs = q->qi_dquots;
66 if (XFS_IS_UQUOTA_RUNNING(mp))
67 state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED;
68 if (XFS_IS_UQUOTA_ENFORCED(mp))
69 state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED;
70 if (XFS_IS_GQUOTA_RUNNING(mp))
71 state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED;
72 if (XFS_IS_GQUOTA_ENFORCED(mp))
73 state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED;
74 if (XFS_IS_PQUOTA_RUNNING(mp))
75 state->s_state[PRJQUOTA].flags |= QCI_ACCT_ENABLED;
76 if (XFS_IS_PQUOTA_ENFORCED(mp))
77 state->s_state[PRJQUOTA].flags |= QCI_LIMITS_ENFORCED;
78
79 xfs_qm_fill_state(&state->s_state[USRQUOTA], mp, q->qi_uquotaip,
80 mp->m_sb.sb_uquotino, &q->qi_usr_default);
81 xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp, q->qi_gquotaip,
82 mp->m_sb.sb_gquotino, &q->qi_grp_default);
83 xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp, q->qi_pquotaip,
84 mp->m_sb.sb_pquotino, &q->qi_prj_default);
85 return 0;
86}
87
88STATIC xfs_dqtype_t
89xfs_quota_type(int type)
90{
91 switch (type) {
92 case USRQUOTA:
93 return XFS_DQTYPE_USER;
94 case GRPQUOTA:
95 return XFS_DQTYPE_GROUP;
96 default:
97 return XFS_DQTYPE_PROJ;
98 }
99}
100
101#define XFS_QC_SETINFO_MASK (QC_TIMER_MASK | QC_WARNS_MASK)
102
103
104
105
106static int
107xfs_fs_set_info(
108 struct super_block *sb,
109 int type,
110 struct qc_info *info)
111{
112 struct xfs_mount *mp = XFS_M(sb);
113 struct qc_dqblk newlim;
114
115 if (sb_rdonly(sb))
116 return -EROFS;
117 if (!XFS_IS_QUOTA_RUNNING(mp))
118 return -ENOSYS;
119 if (!XFS_IS_QUOTA_ON(mp))
120 return -ESRCH;
121 if (info->i_fieldmask & ~XFS_QC_SETINFO_MASK)
122 return -EINVAL;
123 if ((info->i_fieldmask & XFS_QC_SETINFO_MASK) == 0)
124 return 0;
125
126 newlim.d_fieldmask = info->i_fieldmask;
127 newlim.d_spc_timer = info->i_spc_timelimit;
128 newlim.d_ino_timer = info->i_ino_timelimit;
129 newlim.d_rt_spc_timer = info->i_rt_spc_timelimit;
130 newlim.d_ino_warns = info->i_ino_warnlimit;
131 newlim.d_spc_warns = info->i_spc_warnlimit;
132 newlim.d_rt_spc_warns = info->i_rt_spc_warnlimit;
133
134 return xfs_qm_scall_setqlim(mp, 0, xfs_quota_type(type), &newlim);
135}
136
137static unsigned int
138xfs_quota_flags(unsigned int uflags)
139{
140 unsigned int flags = 0;
141
142 if (uflags & FS_QUOTA_UDQ_ACCT)
143 flags |= XFS_UQUOTA_ACCT;
144 if (uflags & FS_QUOTA_PDQ_ACCT)
145 flags |= XFS_PQUOTA_ACCT;
146 if (uflags & FS_QUOTA_GDQ_ACCT)
147 flags |= XFS_GQUOTA_ACCT;
148 if (uflags & FS_QUOTA_UDQ_ENFD)
149 flags |= XFS_UQUOTA_ENFD;
150 if (uflags & FS_QUOTA_GDQ_ENFD)
151 flags |= XFS_GQUOTA_ENFD;
152 if (uflags & FS_QUOTA_PDQ_ENFD)
153 flags |= XFS_PQUOTA_ENFD;
154
155 return flags;
156}
157
158STATIC int
159xfs_quota_enable(
160 struct super_block *sb,
161 unsigned int uflags)
162{
163 struct xfs_mount *mp = XFS_M(sb);
164
165 if (sb_rdonly(sb))
166 return -EROFS;
167 if (!XFS_IS_QUOTA_RUNNING(mp))
168 return -ENOSYS;
169
170 return xfs_qm_scall_quotaon(mp, xfs_quota_flags(uflags));
171}
172
173STATIC int
174xfs_quota_disable(
175 struct super_block *sb,
176 unsigned int uflags)
177{
178 struct xfs_mount *mp = XFS_M(sb);
179
180 if (sb_rdonly(sb))
181 return -EROFS;
182 if (!XFS_IS_QUOTA_RUNNING(mp))
183 return -ENOSYS;
184 if (!XFS_IS_QUOTA_ON(mp))
185 return -EINVAL;
186
187 return xfs_qm_scall_quotaoff(mp, xfs_quota_flags(uflags));
188}
189
190STATIC int
191xfs_fs_rm_xquota(
192 struct super_block *sb,
193 unsigned int uflags)
194{
195 struct xfs_mount *mp = XFS_M(sb);
196 unsigned int flags = 0;
197
198 if (sb_rdonly(sb))
199 return -EROFS;
200
201 if (XFS_IS_QUOTA_ON(mp))
202 return -EINVAL;
203
204 if (uflags & ~(FS_USER_QUOTA | FS_GROUP_QUOTA | FS_PROJ_QUOTA))
205 return -EINVAL;
206
207 if (uflags & FS_USER_QUOTA)
208 flags |= XFS_QMOPT_UQUOTA;
209 if (uflags & FS_GROUP_QUOTA)
210 flags |= XFS_QMOPT_GQUOTA;
211 if (uflags & FS_PROJ_QUOTA)
212 flags |= XFS_QMOPT_PQUOTA;
213
214 return xfs_qm_scall_trunc_qfiles(mp, flags);
215}
216
217STATIC int
218xfs_fs_get_dqblk(
219 struct super_block *sb,
220 struct kqid qid,
221 struct qc_dqblk *qdq)
222{
223 struct xfs_mount *mp = XFS_M(sb);
224 xfs_dqid_t id;
225
226 if (!XFS_IS_QUOTA_RUNNING(mp))
227 return -ENOSYS;
228 if (!XFS_IS_QUOTA_ON(mp))
229 return -ESRCH;
230
231 id = from_kqid(&init_user_ns, qid);
232 return xfs_qm_scall_getquota(mp, id, xfs_quota_type(qid.type), qdq);
233}
234
235
236STATIC int
237xfs_fs_get_nextdqblk(
238 struct super_block *sb,
239 struct kqid *qid,
240 struct qc_dqblk *qdq)
241{
242 int ret;
243 struct xfs_mount *mp = XFS_M(sb);
244 xfs_dqid_t id;
245
246 if (!XFS_IS_QUOTA_RUNNING(mp))
247 return -ENOSYS;
248 if (!XFS_IS_QUOTA_ON(mp))
249 return -ESRCH;
250
251 id = from_kqid(&init_user_ns, *qid);
252 ret = xfs_qm_scall_getquota_next(mp, &id, xfs_quota_type(qid->type),
253 qdq);
254 if (ret)
255 return ret;
256
257
258 *qid = make_kqid(current_user_ns(), qid->type, id);
259 return 0;
260}
261
262STATIC int
263xfs_fs_set_dqblk(
264 struct super_block *sb,
265 struct kqid qid,
266 struct qc_dqblk *qdq)
267{
268 struct xfs_mount *mp = XFS_M(sb);
269
270 if (sb_rdonly(sb))
271 return -EROFS;
272 if (!XFS_IS_QUOTA_RUNNING(mp))
273 return -ENOSYS;
274 if (!XFS_IS_QUOTA_ON(mp))
275 return -ESRCH;
276
277 return xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid),
278 xfs_quota_type(qid.type), qdq);
279}
280
281const struct quotactl_ops xfs_quotactl_operations = {
282 .get_state = xfs_fs_get_quota_state,
283 .set_info = xfs_fs_set_info,
284 .quota_enable = xfs_quota_enable,
285 .quota_disable = xfs_quota_disable,
286 .rm_xquota = xfs_fs_rm_xquota,
287 .get_dqblk = xfs_fs_get_dqblk,
288 .get_nextdqblk = xfs_fs_get_nextdqblk,
289 .set_dqblk = xfs_fs_set_dqblk,
290};
291
