1 af3a75b4 2022-12-02 op /*
 2 af3a75b4 2022-12-02 op  * Copyright (c) 2004, 2005 Darren Tucker (dtucker at zip com au).
 3 af3a75b4 2022-12-02 op  *
 4 af3a75b4 2022-12-02 op  * Permission to use, copy, modify, and distribute this software for any
 5 af3a75b4 2022-12-02 op  * purpose with or without fee is hereby granted, provided that the above
 6 af3a75b4 2022-12-02 op  * copyright notice and this permission notice appear in all copies.
 7 af3a75b4 2022-12-02 op  *
 8 af3a75b4 2022-12-02 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 af3a75b4 2022-12-02 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 af3a75b4 2022-12-02 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 af3a75b4 2022-12-02 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 af3a75b4 2022-12-02 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 af3a75b4 2022-12-02 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 af3a75b4 2022-12-02 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 af3a75b4 2022-12-02 op  */
16 af3a75b4 2022-12-02 op 
17 af3a75b4 2022-12-02 op #include <sys/types.h>
18 af3a75b4 2022-12-02 op #include <unistd.h>
19 af3a75b4 2022-12-02 op 
20 af3a75b4 2022-12-02 op int
21 af3a75b4 2022-12-02 op setresgid(gid_t rgid, gid_t egid, gid_t sgid)
22 af3a75b4 2022-12-02 op {
23 af3a75b4 2022-12-02 op 	/* this is the only configuration tested */
24 af3a75b4 2022-12-02 op 
25 af3a75b4 2022-12-02 op 	if (rgid != egid || egid != sgid)
26 af3a75b4 2022-12-02 op 		return -1;
27 af3a75b4 2022-12-02 op 
28 af3a75b4 2022-12-02 op 	if (setregid(rgid, egid) == -1)
29 af3a75b4 2022-12-02 op 		return -1;
30 af3a75b4 2022-12-02 op 
31 af3a75b4 2022-12-02 op 	return 0;
32 af3a75b4 2022-12-02 op }