2 Copyright (C) Andrew Tridgell 2009
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #define UID_WRAPPER_NOT_REPLACE
21 #include "../replace/replace.h"
23 #include "system/passwd.h"
25 #else /* _SAMBA_BUILD_ */
27 #error uid_wrapper_only_supported_in_samba_yet
36 we keep the virtualised euid/egid/groups information here
47 static void uwrap_init(void)
49 if (uwrap.initialised) return;
50 uwrap.initialised = true;
51 if (getenv("UID_WRAPPER")) {
53 /* put us in one group */
55 uwrap.groups = talloc_array(talloc_autofree_context(), gid_t, 1);
61 _PUBLIC_ int uwrap_enabled(void)
64 return uwrap.enabled?1:0;
67 _PUBLIC_ int uwrap_seteuid(uid_t euid)
73 /* assume for now that the ruid stays as root */
78 _PUBLIC_ uid_t uwrap_geteuid(void)
87 _PUBLIC_ int uwrap_setegid(gid_t egid)
93 /* assume for now that the ruid stays as root */
98 _PUBLIC_ uid_t uwrap_getegid(void)
101 if (!uwrap.enabled) {
107 _PUBLIC_ int uwrap_setgroups(size_t size, const gid_t *list)
110 if (!uwrap.enabled) {
111 return setgroups(size, list);
114 talloc_free(uwrap.groups);
119 uwrap.groups = talloc_array(talloc_autofree_context(), gid_t, size);
120 if (uwrap.groups == NULL) {
124 memcpy(uwrap.groups, list, size*sizeof(gid_t));
125 uwrap.ngroups = size;
130 _PUBLIC_ int uwrap_getgroups(int size, gid_t *list)
133 if (!uwrap.enabled) {
134 return getgroups(size, list);
137 if (size > uwrap.ngroups) {
138 size = uwrap.ngroups;
141 return uwrap.ngroups;
143 if (size < uwrap.ngroups) {
147 memcpy(list, uwrap.groups, size*sizeof(gid_t));
148 return uwrap.ngroups;
151 _PUBLIC_ uid_t uwrap_getuid(void)
154 if (!uwrap.enabled) {
157 /* we don't simulate ruid changing */
161 _PUBLIC_ gid_t uwrap_getgid(void)
164 if (!uwrap.enabled) {
167 /* we don't simulate rgid changing */