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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #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 5.4 (Berkeley) 6/1/90";
- #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);
- }
-