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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that this notice is preserved and that due credit is given
- * to the University of California at Berkeley. The name of the University
- * may not be used to endorse or promote products derived from this
- * software without specific prior written permission. This software
- * is provided ``as is'' without express or implied warranty.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1980 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)groups.c 5.2 (Berkeley) 4/20/88";
- #endif /* not lint */
-
- /*
- * groups
- */
-
- #include <sys/param.h>
- #include <grp.h>
- #include <pwd.h>
- #include <stdio.h>
-
- int groups[NGROUPS];
-
- main(argc, argv)
- int argc;
- char *argv[];
- {
- int ngroups, i;
- char *sep = "";
- struct group *gr;
-
- if (argc > 1)
- showgroups(argv[1]);
- ngroups = getgroups(NGROUPS, groups);
- for (i = 0; i < ngroups; i++) {
- gr = getgrgid(groups[i]);
- if (gr == NULL)
- printf("%s%d", sep, groups[i]);
- else
- printf("%s%s", sep, gr->gr_name);
- sep = " ";
- }
- printf("\n");
- exit(0);
- }
-
- showgroups(user)
- register char *user;
- {
- register struct group *gr;
- register struct passwd *pw;
- register char **cp;
- char *sep = "";
-
- if ((pw = getpwnam(user)) == NULL) {
- fprintf(stderr, "groups: no such user.\n");
- exit(1);
- }
- while (gr = getgrent()) {
- if (pw->pw_gid == gr->gr_gid) {
- printf("%s%s", sep, gr->gr_name);
- sep = " ";
- continue;
- }
- for (cp = gr->gr_mem; cp && *cp; cp++)
- if (strcmp(*cp, user) == 0) {
- printf("%s%s", sep, gr->gr_name);
- sep = " ";
- break;
- }
- }
- printf("\n");
- exit(0);
- }
-