Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 : System QUOTA function wrappers for LINUX
4 : Copyright (C) Stefan (metze) Metzmacher 2003
5 :
6 : This program is free software; you can redistribute it and/or modify
7 : it under the terms of the GNU General Public License as published by
8 : the Free Software Foundation; either version 3 of the License, or
9 : (at your option) any later version.
10 :
11 : This program is distributed in the hope that it will be useful,
12 : but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : GNU General Public License for more details.
15 :
16 : You should have received a copy of the GNU General Public License
17 : along with this program. If not, see <http://www.gnu.org/licenses/>.
18 : */
19 :
20 :
21 : #include "includes.h"
22 :
23 : #undef DBGC_CLASS
24 : #define DBGC_CLASS DBGC_QUOTA
25 :
26 : #ifndef HAVE_SYS_QUOTAS
27 : #ifdef HAVE_QUOTACTL_LINUX
28 : #undef HAVE_QUOTACTL_LINUX
29 : #endif
30 : #endif
31 :
32 : #ifdef HAVE_QUOTACTL_LINUX
33 :
34 : #include <sys/quota.h>
35 :
36 : /****************************************************************************
37 : Linux quota get calls.
38 : ****************************************************************************/
39 2338 : int sys_get_vfs_quota(const char *path, const char *bdev,
40 : enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
41 : {
42 2338 : int ret = -1;
43 2338 : uint32_t qflags = 0;
44 0 : struct dqblk D;
45 2338 : uint64_t bsize = (uint64_t)QUOTABLOCK_SIZE;
46 :
47 2338 : if (!path || !bdev || !dp) {
48 0 : smb_panic("sys_get_vfs_quota: called with NULL pointer");
49 : }
50 :
51 2338 : ZERO_STRUCT(*dp);
52 2338 : dp->qtype = qtype;
53 :
54 2338 : ZERO_STRUCT(D);
55 :
56 2338 : switch (qtype) {
57 0 : case SMB_USER_QUOTA_TYPE:
58 0 : DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] "
59 : "SMB_USER_QUOTA_TYPE uid[%u]\n",
60 : path, bdev, (unsigned)id.uid));
61 :
62 0 : if ((ret = quotactl(QCMD(Q_GETQUOTA, USRQUOTA), bdev,
63 0 : id.uid, (caddr_t)&D))) {
64 0 : return ret;
65 : }
66 :
67 0 : break;
68 0 : case SMB_GROUP_QUOTA_TYPE:
69 0 : DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] "
70 : "SMB_GROUP_QUOTA_TYPE gid[%u]\n",
71 : path, bdev, (unsigned)id.gid));
72 :
73 0 : if ((ret = quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), bdev,
74 0 : id.gid, (caddr_t)&D))) {
75 0 : return ret;
76 : }
77 :
78 0 : break;
79 1169 : case SMB_USER_FS_QUOTA_TYPE:
80 1169 : DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] "
81 : "SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
82 : path, bdev, (unsigned)geteuid()));
83 :
84 1169 : if ((ret = quotactl(QCMD(Q_GETQUOTA, USRQUOTA), bdev,
85 1169 : geteuid(), (caddr_t)&D)) == 0) {
86 0 : qflags |= QUOTAS_DENY_DISK;
87 : }
88 :
89 1169 : ret = 0;
90 :
91 1169 : break;
92 1169 : case SMB_GROUP_FS_QUOTA_TYPE:
93 1169 : DEBUG(10, ("sys_get_vfs_quota: path[%s] bdev[%s] "
94 : "SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
95 : path, bdev, (unsigned)getegid()));
96 :
97 1169 : if ((ret = quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), bdev,
98 1169 : getegid(), (caddr_t)&D)) == 0) {
99 0 : qflags |= QUOTAS_DENY_DISK;
100 : }
101 :
102 1169 : ret = 0;
103 1169 : break;
104 0 : default:
105 0 : errno = ENOSYS;
106 0 : return -1;
107 : }
108 :
109 2338 : dp->bsize = bsize;
110 2338 : dp->softlimit = (uint64_t)D.dqb_bsoftlimit;
111 2338 : dp->hardlimit = (uint64_t)D.dqb_bhardlimit;
112 2338 : dp->ihardlimit = (uint64_t)D.dqb_ihardlimit;
113 2338 : dp->isoftlimit = (uint64_t)D.dqb_isoftlimit;
114 2338 : dp->curinodes = (uint64_t)D.dqb_curinodes;
115 2338 : dp->curblocks = (uint64_t)D.dqb_curspace/bsize;
116 :
117 :
118 2338 : dp->qflags = qflags;
119 :
120 2338 : return ret;
121 : }
122 :
123 : /****************************************************************************
124 : Linux quota set calls.
125 : ****************************************************************************/
126 0 : int sys_set_vfs_quota(const char *path, const char *bdev,
127 : enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
128 : {
129 0 : int ret = -1;
130 0 : struct dqblk D;
131 0 : uint64_t bsize = (uint64_t)QUOTABLOCK_SIZE;
132 0 : bool cur_enf, new_enf;
133 :
134 0 : if (!path || !bdev || !dp) {
135 0 : smb_panic("sys_set_vfs_quota: called with NULL pointer");
136 : }
137 :
138 0 : ZERO_STRUCT(D);
139 :
140 0 : if (bsize == dp->bsize) {
141 0 : D.dqb_bsoftlimit = dp->softlimit;
142 0 : D.dqb_bhardlimit = dp->hardlimit;
143 : } else {
144 0 : D.dqb_bsoftlimit = (dp->softlimit*dp->bsize)/bsize;
145 0 : D.dqb_bhardlimit = (dp->hardlimit*dp->bsize)/bsize;
146 : }
147 0 : D.dqb_ihardlimit = dp->ihardlimit;
148 0 : D.dqb_isoftlimit = dp->isoftlimit;
149 0 : D.dqb_valid = QIF_LIMITS;
150 :
151 0 : switch (qtype) {
152 0 : case SMB_USER_QUOTA_TYPE:
153 0 : DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] "
154 : "SMB_USER_QUOTA_TYPE uid[%u]\n",
155 : path, bdev, (unsigned)id.uid));
156 :
157 0 : ret = quotactl(QCMD(Q_SETQUOTA,USRQUOTA), bdev, id.uid, (caddr_t)&D);
158 0 : break;
159 0 : case SMB_GROUP_QUOTA_TYPE:
160 0 : DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] "
161 : "SMB_GROUP_QUOTA_TYPE gid[%u]\n",
162 : path, bdev, (unsigned)id.gid));
163 :
164 0 : ret = quotactl(QCMD(Q_SETQUOTA,GRPQUOTA), bdev, id.gid, (caddr_t)&D);
165 0 : break;
166 0 : case SMB_USER_FS_QUOTA_TYPE:
167 0 : DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] "
168 : "SMB_USER_FS_QUOTA_TYPE (uid[%u])\n",
169 : path, bdev, (unsigned)geteuid()));
170 :
171 0 : ret = quotactl(QCMD(Q_GETQUOTA, USRQUOTA), bdev,
172 0 : geteuid(), (caddr_t)&D);
173 0 : cur_enf = (ret == 0);
174 0 : new_enf = ((dp->qflags & QUOTAS_DENY_DISK) != 0);
175 : /* We're not changing quota enforcement, so return
176 : * success
177 : * IFF the wanted state is identical to the current
178 : * state */
179 0 : if (cur_enf == new_enf) {
180 0 : ret = 0;
181 : } else {
182 0 : errno = EPERM;
183 0 : ret = -1;
184 : }
185 :
186 0 : break;
187 0 : case SMB_GROUP_FS_QUOTA_TYPE:
188 0 : DEBUG(10, ("sys_set_vfs_quota: path[%s] bdev[%s] "
189 : "SMB_GROUP_FS_QUOTA_TYPE (gid[%u])\n",
190 : path, bdev, (unsigned)getegid()));
191 :
192 0 : ret = quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), bdev,
193 0 : getegid(), (caddr_t)&D);
194 0 : cur_enf = (ret == 0);
195 0 : new_enf = ((dp->qflags & QUOTAS_DENY_DISK) != 0);
196 : /* We're not changing quota enforcement, so return
197 : * success
198 : * IFF the wanted state is identical to the current
199 : * state */
200 0 : if (cur_enf == new_enf) {
201 0 : ret = 0;
202 : } else {
203 0 : errno = EPERM;
204 0 : ret = -1;
205 : }
206 :
207 0 : break;
208 0 : default:
209 0 : errno = ENOSYS;
210 0 : return -1;
211 : }
212 :
213 0 : return ret;
214 : }
215 :
216 : #else /* HAVE_QUOTACTL_LINUX */
217 : void dummy_sysquotas_linux(void);
218 :
219 : void dummy_sysquotas_linux(void){}
220 : #endif /* HAVE_QUOTACTL_LINUX */
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