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- /*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@(#)initgroups.c 5.3 (Berkeley) 4/27/86";
- #endif LIBC_SCCS and not lint
-
- /*
- * initgroups
- */
- #include <stdio.h>
- #include <sys/param.h>
- #include <grp.h>
-
- struct group *getgrent();
-
- initgroups(uname, agroup)
- char *uname;
- int agroup;
- {
- int groups[NGROUPS], ngroups = 0;
- register struct group *grp;
- register int i;
-
- if (agroup >= 0)
- groups[ngroups++] = agroup;
- setgrent();
- while (grp = getgrent()) {
- if (grp->gr_gid == agroup)
- continue;
- for (i = 0; grp->gr_mem[i]; i++)
- if (!strcmp(grp->gr_mem[i], uname)) {
- if (ngroups == NGROUPS) {
- fprintf(stderr, "initgroups: %s is in too many groups\n", uname);
- goto toomany;
- }
- groups[ngroups++] = grp->gr_gid;
- }
- }
- toomany:
- endgrent();
- if (setgroups(ngroups, groups) < 0) {
- perror("setgroups");
- return (-1);
- }
- return (0);
- }
-