source: vendor/3.5.5/source3/smbd/ntquotas.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 5.3 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 NT QUOTA suppport
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#include "includes.h"
21
22#undef DBGC_CLASS
23#define DBGC_CLASS DBGC_QUOTA
24
25static uint64_t limit_nt2unix(uint64_t in, uint64_t bsize)
26{
27 uint64_t ret = (uint64_t)0;
28
29 ret = (uint64_t)(in/bsize);
30 if (in>0 && ret==0) {
31 /* we have to make sure that a overflow didn't set NO_LIMIT */
32 ret = (uint64_t)1;
33 }
34
35 if (in == SMB_NTQUOTAS_NO_LIMIT)
36 ret = SMB_QUOTAS_NO_LIMIT;
37 else if (in == SMB_NTQUOTAS_NO_SPACE)
38 ret = SMB_QUOTAS_NO_SPACE;
39 else if (in == SMB_NTQUOTAS_NO_ENTRY)
40 ret = SMB_QUOTAS_NO_LIMIT;
41
42 return ret;
43}
44
45static uint64_t limit_unix2nt(uint64_t in, uint64_t bsize)
46{
47 uint64_t ret = (uint64_t)0;
48
49 ret = (uint64_t)(in*bsize);
50
51 if (ret < in) {
52 /* we overflow */
53 ret = SMB_NTQUOTAS_NO_LIMIT;
54 }
55
56 if (in == SMB_QUOTAS_NO_LIMIT)
57 ret = SMB_NTQUOTAS_NO_LIMIT;
58
59 return ret;
60}
61
62static uint64_t limit_blk2inodes(uint64_t in)
63{
64 uint64_t ret = (uint64_t)0;
65
66 ret = (uint64_t)(in/2);
67
68 if (ret == 0 && in != 0)
69 ret = (uint64_t)1;
70
71 return ret;
72}
73
74int vfs_get_ntquota(files_struct *fsp, enum SMB_QUOTA_TYPE qtype, DOM_SID *psid, SMB_NTQUOTA_STRUCT *qt)
75{
76 int ret;
77 SMB_DISK_QUOTA D;
78 unid_t id;
79
80 ZERO_STRUCT(D);
81
82 if (!fsp||!fsp->conn||!qt)
83 return (-1);
84
85 ZERO_STRUCT(*qt);
86
87 id.uid = -1;
88
89 if (psid && !sid_to_uid(psid, &id.uid)) {
90 DEBUG(0,("sid_to_uid: failed, SID[%s]\n",
91 sid_string_dbg(psid)));
92 }
93
94 ret = SMB_VFS_GET_QUOTA(fsp->conn, qtype, id, &D);
95
96 if (psid)
97 qt->sid = *psid;
98
99 if (ret!=0) {
100 return ret;
101 }
102
103 qt->usedspace = (uint64_t)D.curblocks*D.bsize;
104 qt->softlim = limit_unix2nt(D.softlimit, D.bsize);
105 qt->hardlim = limit_unix2nt(D.hardlimit, D.bsize);
106 qt->qflags = D.qflags;
107
108
109 return 0;
110}
111
112int vfs_set_ntquota(files_struct *fsp, enum SMB_QUOTA_TYPE qtype, DOM_SID *psid, SMB_NTQUOTA_STRUCT *qt)
113{
114 int ret;
115 SMB_DISK_QUOTA D;
116 unid_t id;
117 ZERO_STRUCT(D);
118
119 if (!fsp||!fsp->conn||!qt)
120 return (-1);
121
122 id.uid = -1;
123
124 D.bsize = (uint64_t)QUOTABLOCK_SIZE;
125
126 D.softlimit = limit_nt2unix(qt->softlim,D.bsize);
127 D.hardlimit = limit_nt2unix(qt->hardlim,D.bsize);
128 D.qflags = qt->qflags;
129
130 D.isoftlimit = limit_blk2inodes(D.softlimit);
131 D.ihardlimit = limit_blk2inodes(D.hardlimit);
132
133 if (psid && !sid_to_uid(psid, &id.uid)) {
134 DEBUG(0,("sid_to_uid: failed, SID[%s]\n",
135 sid_string_dbg(psid)));
136 }
137
138 ret = SMB_VFS_SET_QUOTA(fsp->conn, qtype, id, &D);
139
140 return ret;
141}
142
143static bool allready_in_quota_list(SMB_NTQUOTA_LIST *qt_list, uid_t uid)
144{
145 SMB_NTQUOTA_LIST *tmp_list = NULL;
146
147 if (!qt_list)
148 return False;
149
150 for (tmp_list=qt_list;tmp_list!=NULL;tmp_list=tmp_list->next) {
151 if (tmp_list->uid == uid) {
152 return True;
153 }
154 }
155
156 return False;
157}
158
159int vfs_get_user_ntquota_list(files_struct *fsp, SMB_NTQUOTA_LIST **qt_list)
160{
161 struct passwd *usr;
162 TALLOC_CTX *mem_ctx = NULL;
163
164 if (!fsp||!fsp->conn||!qt_list)
165 return (-1);
166
167 *qt_list = NULL;
168
169 if ((mem_ctx=talloc_init("SMB_USER_QUOTA_LIST"))==NULL) {
170 DEBUG(0,("talloc_init() failed\n"));
171 return (-1);
172 }
173
174 sys_setpwent();
175 while ((usr = sys_getpwent()) != NULL) {
176 SMB_NTQUOTA_STRUCT tmp_qt;
177 SMB_NTQUOTA_LIST *tmp_list_ent;
178 DOM_SID sid;
179
180 ZERO_STRUCT(tmp_qt);
181
182 if (allready_in_quota_list((*qt_list),usr->pw_uid)) {
183 DEBUG(5,("record for uid[%ld] allready in the list\n",(long)usr->pw_uid));
184 continue;
185 }
186
187 uid_to_sid(&sid, usr->pw_uid);
188
189 if (vfs_get_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &tmp_qt)!=0) {
190 DEBUG(5,("no quota entry for sid[%s] path[%s]\n",
191 sid_string_dbg(&sid),
192 fsp->conn->connectpath));
193 continue;
194 }
195
196 DEBUG(15,("quota entry for id[%s] path[%s]\n",
197 sid_string_dbg(&sid), fsp->conn->connectpath));
198
199 if ((tmp_list_ent=TALLOC_ZERO_P(mem_ctx,SMB_NTQUOTA_LIST))==NULL) {
200 DEBUG(0,("TALLOC_ZERO() failed\n"));
201 *qt_list = NULL;
202 talloc_destroy(mem_ctx);
203 return (-1);
204 }
205
206 if ((tmp_list_ent->quotas=TALLOC_ZERO_P(mem_ctx,SMB_NTQUOTA_STRUCT))==NULL) {
207 DEBUG(0,("TALLOC_ZERO() failed\n"));
208 *qt_list = NULL;
209 talloc_destroy(mem_ctx);
210 return (-1);
211 }
212
213 tmp_list_ent->uid = usr->pw_uid;
214 memcpy(tmp_list_ent->quotas,&tmp_qt,sizeof(tmp_qt));
215 tmp_list_ent->mem_ctx = mem_ctx;
216
217 DLIST_ADD((*qt_list),tmp_list_ent);
218
219 }
220 sys_endpwent();
221
222 return 0;
223}
224
225static int quota_handle_destructor(SMB_NTQUOTA_HANDLE *handle)
226{
227 if (handle->quota_list)
228 free_ntquota_list(&handle->quota_list);
229 return 0;
230}
231
232void *init_quota_handle(TALLOC_CTX *mem_ctx)
233{
234 SMB_NTQUOTA_HANDLE *qt_handle;
235
236 if (!mem_ctx)
237 return False;
238
239 qt_handle = TALLOC_ZERO_P(mem_ctx,SMB_NTQUOTA_HANDLE);
240 if (qt_handle==NULL) {
241 DEBUG(0,("TALLOC_ZERO() failed\n"));
242 return NULL;
243 }
244
245 talloc_set_destructor(qt_handle, quota_handle_destructor);
246 return (void *)qt_handle;
247}
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