src/tests/test-setpag.c

   1 /*
   2  * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #include <stdio.h>
  39 #include <sys/types.h>
  40 #include <sys/wait.h>
  41 #include <sys/param.h>
  42 #include <unistd.h>
  43 #include <pwd.h>
  44 #include <limits.h>
  45
  46 #include <afs/stds.h>
  47 #include <afs/sys_prototypes.h>
  48
  49 #include <err.h>
  50
  51 #if !defined(NGROUPS) && defined(NGROUPS_MAX)
  52 #define NGROUPS NGROUPS_MAX
  53 #endif
  54
  55 static void
  56 print_groups(int ngroups, gid_t groups[NGROUPS])
  57 {
  58     int i;
  59
  60     printf("groups: ");
  61     for (i = 0; i < ngroups; ++i)
  62         printf("%d%s", groups[i], (i < ngroups - 1) ? ", " : "");
  63     printf("\n");
  64 }
  65
  66 int
  67 main(int argc, char **argv)
  68 {
  69     int ret;
  70     gid_t groups[NGROUPS];
  71     int ngroups;
  72     gid_t pag1, pag2;
  73     pid_t pid;
  74
  75     if (argc != 1)
  76         errx(1, "Usage: %s", argv[0]);
  77
  78     ngroups = getgroups(NGROUPS, groups);
  79     if (ngroups < 0)
  80         err(1, "getgroups %d", NGROUPS);
  81     pag1 = groups[1];
  82     pag2 = groups[2];
  83     printf("in parent ");
  84     print_groups(ngroups, groups);
  85     pid = fork();
  86     if (pid < 0)
  87         err(1, "fork");
  88     if (pid == 0) {
  89         ret = setpag();
  90         if (ret < 0)
  91             err(1, "setpag");
  92         ngroups = getgroups(NGROUPS, groups);
  93         if (ngroups < 0)
  94             err(1, "getgroups %d", NGROUPS);
  95         printf("in child ");
  96         print_groups(ngroups, groups);
  97         return 0;
  98     } else {
  99         int status;
 100
 101         while (waitpid(pid, &status, WNOHANG | WUNTRACED) != pid);
 102         if (status)
 103             return 1;
 104         ngroups = getgroups(NGROUPS, groups);
 105         if (ngroups < 0)
 106             err(1, "getgroups %d", NGROUPS);
 107         printf("in parent ");
 108         print_groups(ngroups, groups);
 109         if (groups[1] == pag1 && groups[2] == pag2)
 110             return 0;
 111         else
 112             return 1;
 113     }
 114 }