1 // $Id: jailintotempdir.c 1250 2004-03-15 21:37:06Z ensc $ --*- c -*--
3 // Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
5 // This program is free software; you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation; version 2 of the License.
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, write to the Free Software
16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 jailIntoTempDir(char const **err_pos)
33 char buf[] = "/tmp/jaildir.XXXXXX";
34 char const * d = mkdtemp(buf);
35 char const * err = "mkdtemp()";
38 (err="chdir()", chdir(d)==-1) ||
39 (err="rmdir()", rmdir(d)==-1) ||
40 (err="chroot()", chroot(".")==-1) ||
41 (err="setgroups()",setgroups(1, &id)==-1) ||
42 (err="setgid()", setgid(id)==-1) ||
43 (err="setuid()", setuid(id)==-1) ||
44 (err="getgid()", getgid()!=id) ||
45 (err="getuid()", getuid()!=id)) {
46 if (err_pos!=0) *err_pos = err;