readdir now returns an eof indication

[unix-history] / usr / src / old / groups / groups.c

diff --git a/usr/src/old/groups/groups.c b/usr/src/old/groups/groups.c
index f1093b8..ab844ea 100644 (file)
--- a/usr/src/old/groups/groups.c
+++ b/usr/src/old/groups/groups.c
@@ -1,4 +1,29 @@
-/*     groups.c        4.4     83/02/10        */
+/*
+ * Copyright (c) 1980 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, 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'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#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   5.3 (Berkeley) %G%";
+#endif /* not lint */

 
 /*
  * groups
 
 /*
  * groups


@@ -7,18 +32,20 @@
 #include <sys/param.h>
 #include <grp.h>
 #include <pwd.h>
 #include <sys/param.h>
 #include <grp.h>
 #include <pwd.h>

+#include <stdio.h>

 
 

-short  groups[NGROUPS];
-struct group *gr, *getgrgid();
+int    groups[NGROUPS];

 
 main(argc, argv)
        int argc;
        char *argv[];
 {
 
 main(argc, argv)
        int argc;
        char *argv[];
 {

-       int ngroups;
+       int ngroups, i;

        char *sep = "";
        char *sep = "";

-       int i;
+       struct group *gr;

 
 

+       if (argc > 1)
+               showgroups(argv[1]);

        ngroups = getgroups(NGROUPS, groups);
        for (i = 0; i < ngroups; i++) {
                gr = getgrgid(groups[i]);
        ngroups = getgroups(NGROUPS, groups);
        for (i = 0; i < ngroups; i++) {
                gr = getgrgid(groups[i]);


@@ -31,3 +58,32 @@ main(argc, argv)
        printf("\n");
        exit(0);
 }
        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);
+}