Line data Source code
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 : #include "smbd/smbd.h"
22 : #include "../lib/util/util_pw.h"
23 : #include "system/passwd.h"
24 : #include "passdb/lookup_sid.h"
25 : #include "libsmb/libsmb.h"
26 : #include "libcli/security/dom_sid.h"
27 :
28 : #undef DBGC_CLASS
29 : #define DBGC_CLASS DBGC_QUOTA
30 :
31 0 : static uint64_t limit_nt2unix(uint64_t in, uint64_t bsize)
32 : {
33 0 : uint64_t ret = (uint64_t)0;
34 :
35 0 : ret = (uint64_t)(in/bsize);
36 0 : if (in>0 && ret==0) {
37 : /* we have to make sure that a overflow didn't set NO_LIMIT */
38 0 : ret = (uint64_t)1;
39 : }
40 :
41 0 : if (in == SMB_NTQUOTAS_NO_LIMIT)
42 0 : ret = SMB_QUOTAS_NO_LIMIT;
43 0 : else if (in == SMB_NTQUOTAS_NO_SPACE)
44 0 : ret = SMB_QUOTAS_NO_SPACE;
45 0 : else if (in == SMB_NTQUOTAS_NO_ENTRY)
46 0 : ret = SMB_QUOTAS_NO_LIMIT;
47 :
48 0 : return ret;
49 : }
50 :
51 0 : static uint64_t limit_unix2nt(uint64_t in, uint64_t bsize)
52 : {
53 0 : uint64_t ret = (uint64_t)0;
54 :
55 0 : ret = (uint64_t)(in*bsize);
56 :
57 0 : return ret;
58 : }
59 :
60 0 : NTSTATUS vfs_get_ntquota(files_struct *fsp, enum SMB_QUOTA_TYPE qtype,
61 : struct dom_sid *psid, SMB_NTQUOTA_STRUCT *qt)
62 : {
63 : int ret;
64 : SMB_DISK_QUOTA D;
65 : unid_t id;
66 0 : struct smb_filename *smb_fname_cwd = NULL;
67 0 : int saved_errno = 0;
68 :
69 0 : ZERO_STRUCT(D);
70 :
71 0 : if (!fsp || !fsp->conn || !qt) {
72 0 : return NT_STATUS_INTERNAL_ERROR;
73 : }
74 :
75 0 : ZERO_STRUCT(*qt);
76 :
77 0 : id.uid = -1;
78 :
79 0 : if (psid && !sid_to_uid(psid, &id.uid)) {
80 : struct dom_sid_buf buf;
81 0 : DEBUG(0,("sid_to_uid: failed, SID[%s]\n",
82 : dom_sid_str_buf(psid, &buf)));
83 0 : return NT_STATUS_NO_SUCH_USER;
84 : }
85 :
86 0 : smb_fname_cwd = synthetic_smb_fname(talloc_tos(),
87 : ".",
88 : NULL,
89 : NULL,
90 : 0,
91 : 0);
92 0 : if (smb_fname_cwd == NULL) {
93 0 : return NT_STATUS_NO_MEMORY;
94 : }
95 :
96 0 : ret = SMB_VFS_GET_QUOTA(fsp->conn, smb_fname_cwd, qtype, id, &D);
97 0 : if (ret == -1) {
98 0 : saved_errno = errno;
99 : }
100 0 : TALLOC_FREE(smb_fname_cwd);
101 0 : if (saved_errno != 0) {
102 0 : errno = saved_errno;
103 : }
104 :
105 0 : if (psid)
106 0 : qt->sid = *psid;
107 :
108 0 : if (ret!=0) {
109 0 : return map_nt_error_from_unix(errno);
110 : }
111 :
112 0 : qt->usedspace = (uint64_t)D.curblocks*D.bsize;
113 0 : qt->softlim = limit_unix2nt(D.softlimit, D.bsize);
114 0 : qt->hardlim = limit_unix2nt(D.hardlimit, D.bsize);
115 0 : qt->qflags = D.qflags;
116 :
117 0 : return NT_STATUS_OK;
118 : }
119 :
120 0 : int vfs_set_ntquota(files_struct *fsp, enum SMB_QUOTA_TYPE qtype, struct dom_sid *psid, SMB_NTQUOTA_STRUCT *qt)
121 : {
122 : int ret;
123 : SMB_DISK_QUOTA D;
124 : unid_t id;
125 0 : ZERO_STRUCT(D);
126 :
127 0 : if (!fsp||!fsp->conn||!qt)
128 0 : return (-1);
129 :
130 0 : id.uid = -1;
131 :
132 0 : D.bsize = (uint64_t)QUOTABLOCK_SIZE;
133 :
134 0 : D.softlimit = limit_nt2unix(qt->softlim,D.bsize);
135 0 : D.hardlimit = limit_nt2unix(qt->hardlim,D.bsize);
136 0 : D.qflags = qt->qflags;
137 :
138 0 : if (psid && !sid_to_uid(psid, &id.uid)) {
139 : struct dom_sid_buf buf;
140 0 : DEBUG(0,("sid_to_uid: failed, SID[%s]\n",
141 : dom_sid_str_buf(psid, &buf)));
142 : }
143 :
144 0 : ret = SMB_VFS_SET_QUOTA(fsp->conn, qtype, id, &D);
145 :
146 0 : return ret;
147 : }
148 :
149 0 : static bool already_in_quota_list(SMB_NTQUOTA_LIST *qt_list, uid_t uid)
150 : {
151 0 : SMB_NTQUOTA_LIST *tmp_list = NULL;
152 :
153 0 : if (!qt_list)
154 0 : return False;
155 :
156 0 : for (tmp_list=qt_list;tmp_list!=NULL;tmp_list=tmp_list->next) {
157 0 : if (tmp_list->uid == uid) {
158 0 : return True;
159 : }
160 : }
161 :
162 0 : return False;
163 : }
164 :
165 0 : int vfs_get_user_ntquota_list(files_struct *fsp, SMB_NTQUOTA_LIST **qt_list)
166 : {
167 : struct passwd *usr;
168 0 : TALLOC_CTX *mem_ctx = NULL;
169 :
170 0 : if (!fsp||!fsp->conn||!qt_list)
171 0 : return (-1);
172 :
173 0 : *qt_list = NULL;
174 :
175 0 : if ((mem_ctx=talloc_init("SMB_USER_QUOTA_LIST"))==NULL) {
176 0 : DEBUG(0,("talloc_init() failed\n"));
177 0 : return (-1);
178 : }
179 :
180 0 : setpwent();
181 0 : while ((usr = getpwent()) != NULL) {
182 : SMB_NTQUOTA_STRUCT tmp_qt;
183 : SMB_NTQUOTA_LIST *tmp_list_ent;
184 : struct dom_sid sid;
185 : struct dom_sid_buf buf;
186 : NTSTATUS status;
187 :
188 0 : ZERO_STRUCT(tmp_qt);
189 :
190 0 : if (already_in_quota_list((*qt_list),usr->pw_uid)) {
191 0 : DEBUG(5,("record for uid[%ld] already in the list\n",(long)usr->pw_uid));
192 0 : continue;
193 : }
194 :
195 0 : uid_to_sid(&sid, usr->pw_uid);
196 :
197 0 : status =
198 0 : vfs_get_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &tmp_qt);
199 0 : if (!NT_STATUS_IS_OK(status)) {
200 0 : DEBUG(5, ("failed getting quota for uid[%ld] - %s\n",
201 : (long)usr->pw_uid, nt_errstr(status)));
202 0 : continue;
203 : }
204 0 : if (tmp_qt.softlim == 0 && tmp_qt.hardlim == 0) {
205 0 : DEBUG(5,("no quota entry for sid[%s] path[%s]\n",
206 : dom_sid_str_buf(&sid, &buf),
207 : fsp->conn->connectpath));
208 0 : continue;
209 : }
210 :
211 0 : DEBUG(15,("quota entry for id[%s] path[%s]\n",
212 : dom_sid_str_buf(&sid, &buf),
213 : fsp->conn->connectpath));
214 :
215 0 : if ((tmp_list_ent=talloc_zero(mem_ctx,SMB_NTQUOTA_LIST))==NULL) {
216 0 : DEBUG(0,("TALLOC_ZERO() failed\n"));
217 0 : *qt_list = NULL;
218 0 : talloc_destroy(mem_ctx);
219 0 : return (-1);
220 : }
221 :
222 0 : if ((tmp_list_ent->quotas=talloc_zero(mem_ctx,SMB_NTQUOTA_STRUCT))==NULL) {
223 0 : DEBUG(0,("TALLOC_ZERO() failed\n"));
224 0 : *qt_list = NULL;
225 0 : talloc_destroy(mem_ctx);
226 0 : return (-1);
227 : }
228 :
229 0 : tmp_list_ent->uid = usr->pw_uid;
230 0 : memcpy(tmp_list_ent->quotas,&tmp_qt,sizeof(tmp_qt));
231 0 : tmp_list_ent->mem_ctx = mem_ctx;
232 :
233 0 : DLIST_ADD((*qt_list),tmp_list_ent);
234 :
235 : }
236 0 : endpwent();
237 :
238 0 : if (*qt_list == NULL) {
239 0 : TALLOC_FREE(mem_ctx);
240 : }
241 0 : return 0;
242 : }
243 :
244 1 : static int quota_handle_destructor(SMB_NTQUOTA_HANDLE *handle)
245 : {
246 1 : free_ntquota_list(&handle->quota_list);
247 1 : return 0;
248 : }
249 :
250 1 : void *init_quota_handle(TALLOC_CTX *mem_ctx)
251 : {
252 : SMB_NTQUOTA_HANDLE *qt_handle;
253 :
254 1 : if (!mem_ctx)
255 0 : return NULL;
256 :
257 1 : qt_handle = talloc_zero(mem_ctx,SMB_NTQUOTA_HANDLE);
258 1 : if (qt_handle==NULL) {
259 0 : DEBUG(0,("TALLOC_ZERO() failed\n"));
260 0 : return NULL;
261 : }
262 :
263 1 : talloc_set_destructor(qt_handle, quota_handle_destructor);
264 1 : return (void *)qt_handle;
265 : }
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