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18#include "xfs.h"
19#include "xfs_format.h"
20#include "xfs_log_format.h"
21#include "xfs_trans_resv.h"
22#include "xfs_mount.h"
23#include "xfs_inode.h"
24#include "xfs_quota.h"
25#include "xfs_trans.h"
26#include "xfs_trace.h"
27#include "xfs_icache.h"
28#include "xfs_qm.h"
29#include <linux/quota.h>
30
31
32static 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
65
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
101STATIC 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
114#define XFS_QC_SETINFO_MASK (QC_TIMER_MASK | QC_WARNS_MASK)
115
116
117
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
150static unsigned int
151xfs_quota_flags(unsigned int uflags)
152{
153 unsigned int flags = 0;
154
155 if (uflags & FS_QUOTA_UDQ_ACCT)
156 flags |= XFS_UQUOTA_ACCT;
157 if (uflags & FS_QUOTA_PDQ_ACCT)
158 flags |= XFS_PQUOTA_ACCT;
159 if (uflags & FS_QUOTA_GDQ_ACCT)
160 flags |= XFS_GQUOTA_ACCT;
161 if (uflags & FS_QUOTA_UDQ_ENFD)
162 flags |= XFS_UQUOTA_ENFD;
163 if (uflags & FS_QUOTA_GDQ_ENFD)
164 flags |= XFS_GQUOTA_ENFD;
165 if (uflags & FS_QUOTA_PDQ_ENFD)
166 flags |= XFS_PQUOTA_ENFD;
167
168 return flags;
169}
170
171STATIC 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));
201}
202
203STATIC int
204xfs_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;
210
211 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;
221 if (uflags & FS_PROJ_QUOTA)
222 flags |= XFS_DQ_PROJ;
223
224 return xfs_qm_scall_trunc_qfiles(mp, flags);
225}
226
227STATIC int
228xfs_fs_get_dqblk(
229 struct super_block *sb,
230 struct kqid qid,
231 struct qc_dqblk *qdq)
232{
233 struct xfs_mount *mp = XFS_M(sb);
234 xfs_dqid_t id;
235
236 if (!XFS_IS_QUOTA_RUNNING(mp))
237 return -ENOSYS;
238 if (!XFS_IS_QUOTA_ON(mp))
239 return -ESRCH;
240
241 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
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
270 *qid = make_kqid(current_user_ns(), qid->type, id);
271 return 0;
272
273}
274
275STATIC int
276xfs_fs_set_dqblk(
277 struct super_block *sb,
278 struct kqid qid,
279 struct qc_dqblk *qdq)
280{
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;
289
290 return xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid),
291 xfs_quota_type(qid.type), qdq);
292}
293
294const struct quotactl_ops xfs_quotactl_operations = {
295 .get_state = xfs_fs_get_quota_state,
296 .set_info = xfs_fs_set_info,
297 .quota_enable = xfs_quota_enable,
298 .quota_disable = xfs_quota_disable,
299 .rm_xquota = xfs_fs_rm_xquota,
300 .get_dqblk = xfs_fs_get_dqblk,
301 .get_nextdqblk = xfs_fs_get_nextdqblk,
302 .set_dqblk = xfs_fs_set_dqblk,
303};
304
