xref: /original-bsd/lib/libc/gen/initgroups.c (revision 1d37a0a0)
1 /*
2  * Copyright (c) 1983 Regents of the University of California.
3  * All rights reserved.
4  *
5  * %sccs.include.redist.c%
6  */
7 
8 #if defined(LIBC_SCCS) && !defined(lint)
9 static char sccsid[] = "@(#)initgroups.c	5.8 (Berkeley) 11/12/91";
10 #endif /* LIBC_SCCS and not lint */
11 
12 /*
13  * initgroups
14  */
15 #include <sys/param.h>
16 #include <stdio.h>
17 
18 int
19 initgroups(uname, agroup)
20 	const char *uname;
21 	int agroup;
22 {
23 	int groups[NGROUPS], ngroups;
24 
25 	ngroups = NGROUPS;
26 	if (getgrouplist(uname, agroup, groups, &ngroups) < 0)
27 		fprintf(stderr,
28 		    "initgroups: %s is in too many groups, using first %d\n",
29 		    uname, ngroups);
30 	if (setgroups(ngroups, groups) < 0) {
31 		perror("setgroups");
32 		return (-1);
33 	}
34 	return (0);
35 }
36