1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*
* Store default Quotas in a specified quota record
*
* Copyright (C) Stefan (metze) Metzmacher 2003
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* This module allows the default quota values,
* in the windows explorer GUI, to be stored on a samba server.
* The problem is that linux filesystems only store quotas
* for users and groups, but no default quotas.
*
* Samba returns NO_LIMIT as the default quotas by default
* and refuses to update them.
*
* With this module you can store the default quotas that are reported to
* a windows client, in the quota record of a user. By default the root user
* is taken because quota limits for root are typically not enforced.
*
* This module takes 2 parametric parameters in smb.conf:
* (the default prefix for them is 'default_quota',
* it can be overwrittem when you load the module in
* the 'vfs objects' parameter like this:
* vfs objects = default_quota:myprefix)
*
* "<myprefix>:uid" parameter takes a integer argument,
* it specifies the uid of the quota record, that will be taken for
* storing the default USER-quotas.
*
* - default value: '0' (for root user)
* - e.g.: default_quota:uid = 65534
*
* "<myprefix>:uid nolimit" parameter takes a boolean argument,
* it specifies if we should report the stored default quota values,
* also for the user record, or if you should just report NO_LIMIT
* to the windows client for the user specified by the "<prefix>:uid" parameter.
*
* - default value: yes (that means to report NO_LIMIT)
* - e.g.: default_quota:uid nolimit = no
*
* "<myprefix>:gid" parameter takes a integer argument,
* it's just like "<prefix>:uid" but for group quotas.
* (NOTE: group quotas are not supported from the windows explorer!)
*
* - default value: '0' (for root group)
* - e.g.: default_quota:gid = 65534
*
* "<myprefix>:gid nolimit" parameter takes a boolean argument,
* it's just like "<prefix>:uid nolimit" but for group quotas.
* (NOTE: group quotas are not supported from the windows explorer!)
*
* - default value: yes (that means to report NO_LIMIT)
* - e.g.: default_quota:uid nolimit = no
*
*/
#include "includes.h"
#include "smbd/smbd.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_QUOTA
#define DEFAULT_QUOTA_NAME "default_quota"
#define DEFAULT_QUOTA_UID_DEFAULT 0
#define DEFAULT_QUOTA_UID_NOLIMIT_DEFAULT True
#define DEFAULT_QUOTA_GID_DEFAULT 0
#define DEFAULT_QUOTA_GID_NOLIMIT_DEFAULT True
#define DEFAULT_QUOTA_UID(handle) \
(uid_t)lp_parm_int(SNUM((handle)->conn),DEFAULT_QUOTA_NAME,"uid",DEFAULT_QUOTA_UID_DEFAULT)
#define DEFAULT_QUOTA_UID_NOLIMIT(handle) \
lp_parm_bool(SNUM((handle)->conn),DEFAULT_QUOTA_NAME,"uid nolimit",DEFAULT_QUOTA_UID_NOLIMIT_DEFAULT)
#define DEFAULT_QUOTA_GID(handle) \
(gid_t)lp_parm_int(SNUM((handle)->conn),DEFAULT_QUOTA_NAME,"gid",DEFAULT_QUOTA_GID_DEFAULT)
#define DEFAULT_QUOTA_GID_NOLIMIT(handle) \
lp_parm_bool(SNUM((handle)->conn),DEFAULT_QUOTA_NAME,"gid nolimit",DEFAULT_QUOTA_GID_NOLIMIT_DEFAULT)
static int default_quota_get_quota(vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
enum SMB_QUOTA_TYPE qtype,
unid_t id,
SMB_DISK_QUOTA *dq)
{
int ret = -1;
if ((ret = SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
qtype, id, dq)) != 0) {
return ret;
}
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
/* we use id.uid == 0 for default quotas */
if ((id.uid==DEFAULT_QUOTA_UID(handle)) &&
DEFAULT_QUOTA_UID_NOLIMIT(handle)) {
SMB_QUOTAS_SET_NO_LIMIT(dq);
}
break;
#ifdef HAVE_GROUP_QUOTA
case SMB_GROUP_QUOTA_TYPE:
/* we use id.gid == 0 for default quotas */
if ((id.gid==DEFAULT_QUOTA_GID(handle)) &&
DEFAULT_QUOTA_GID_NOLIMIT(handle)) {
SMB_QUOTAS_SET_NO_LIMIT(dq);
}
break;
#endif /* HAVE_GROUP_QUOTA */
case SMB_USER_FS_QUOTA_TYPE:
{
unid_t qid;
uint32_t qflags = dq->qflags;
qid.uid = DEFAULT_QUOTA_UID(handle);
SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
SMB_USER_QUOTA_TYPE, qid, dq);
dq->qflags = qflags;
}
break;
#ifdef HAVE_GROUP_QUOTA
case SMB_GROUP_FS_QUOTA_TYPE:
{
unid_t qid;
uint32_t qflags = dq->qflags;
qid.gid = DEFAULT_QUOTA_GID(handle);
SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname,
SMB_GROUP_QUOTA_TYPE,
qid, dq);
dq->qflags = qflags;
}
break;
#endif /* HAVE_GROUP_QUOTA */
default:
errno = ENOSYS;
return -1;
break;
}
return ret;
}
static int default_quota_set_quota(vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dq)
{
int ret = -1;
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
/* we use id.uid == 0 for default quotas */
if ((id.uid==DEFAULT_QUOTA_UID(handle)) &&
DEFAULT_QUOTA_UID_NOLIMIT(handle)) {
return -1;
}
break;
#ifdef HAVE_GROUP_QUOTA
case SMB_GROUP_QUOTA_TYPE:
/* we use id.gid == 0 for default quotas */
if ((id.gid==DEFAULT_QUOTA_GID(handle)) &&
DEFAULT_QUOTA_GID_NOLIMIT(handle)) {
return -1;
}
break;
#endif /* HAVE_GROUP_QUOTA */
case SMB_USER_FS_QUOTA_TYPE:
break;
#ifdef HAVE_GROUP_QUOTA
case SMB_GROUP_FS_QUOTA_TYPE:
break;
#endif /* HAVE_GROUP_QUOTA */
default:
errno = ENOSYS;
return -1;
break;
}
if ((ret=SMB_VFS_NEXT_SET_QUOTA(handle, qtype, id, dq))!=0) {
return ret;
}
switch (qtype) {
case SMB_USER_QUOTA_TYPE:
break;
#ifdef HAVE_GROUP_QUOTA
case SMB_GROUP_QUOTA_TYPE:
break;
#endif /* HAVE_GROUP_QUOTA */
case SMB_USER_FS_QUOTA_TYPE:
{
unid_t qid;
qid.uid = DEFAULT_QUOTA_UID(handle);
ret = SMB_VFS_NEXT_SET_QUOTA(handle, SMB_USER_QUOTA_TYPE, qid, dq);
}
break;
#ifdef HAVE_GROUP_QUOTA
case SMB_GROUP_FS_QUOTA_TYPE:
{
unid_t qid;
qid.gid = DEFAULT_QUOTA_GID(handle);
ret = SMB_VFS_NEXT_SET_QUOTA(handle, SMB_GROUP_QUOTA_TYPE, qid, dq);
}
break;
#endif /* HAVE_GROUP_QUOTA */
default:
errno = ENOSYS;
return -1;
break;
}
return ret;
}
static struct vfs_fn_pointers vfs_default_quota_fns = {
.get_quota_fn = default_quota_get_quota,
.set_quota_fn = default_quota_set_quota
};
static_decl_vfs;
NTSTATUS vfs_default_quota_init(TALLOC_CTX *ctx)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, DEFAULT_QUOTA_NAME,
&vfs_default_quota_fns);
}
|
