1 /*
2 * Copyright (c) 2004, 2005 Darren Tucker (dtucker at zip com au).
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <sys/types.h>
18 #include <unistd.h>
19
20 int
setresgid(gid_t rgid,gid_t egid,gid_t sgid)21 setresgid(gid_t rgid, gid_t egid, gid_t sgid)
22 {
23 /* this is the only configuration tested */
24 if (rgid != egid || egid != sgid)
25 return -1;
26
27 # if defined(HAVE_SETREGID) && !defined(BROKEN_SETREGID)
28 if (setregid(rgid, egid) == -1)
29 return -1;
30 # else
31 if (setegid(egid) == -1)
32 return -1;
33 if (setgid(rgid) == -1)
34 return -1;
35 # endif
36
37 return 0;
38 }
39