fix for ANSI C

[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 f6bf82a..04c8c8b 100644 (file)
--- a/usr/src/old/groups/groups.c
+++ b/usr/src/old/groups/groups.c
@@ -1,4 +1,24 @@
-/*     groups.c        4.1     82/02/28        */
+/*
+ * 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) %G%";
+#endif /* not lint */

 
 /*
  * groups
 
 /*
  * groups


@@ -7,27 +27,58 @@
 #include <sys/param.h>
 #include <grp.h>
 #include <pwd.h>
 #include <sys/param.h>
 #include <grp.h>
 #include <pwd.h>

+#include <stdio.h>

 
 

-int    grps[NGRPS/(sizeof(int)*8)];
-struct group *gr, *getgrgid();
+int    groups[NGROUPS];

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

+       int ngroups, i;

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

-       int i;
-
-       setgrp(0, grps);
-       for (i = 0; i < NGRPS; i++)
-               if (grps[i/(sizeof(int)*8)] & (1<<(i%(sizeof(int)*8)))) {
-                       gr = getgrgid(i);
-                       if (gr == NULL)
-                               printf("%s%d", sep, i);
-                       else
-                               printf("%s%s", sep, gr->gr_name);
+       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 = " ";
                        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);
 }
        printf("\n");
        exit(0);
 }