1  /* Test that initgroups works.
       2     Copyright (C) 2020-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <nss.h>
      20  #include <stdio.h>
      21  #include <stdlib.h>
      22  #include <string.h>
      23  #include <sys/types.h>
      24  #include <errno.h>
      25  #include <unistd.h>
      26  #include <grp.h>
      27  
      28  #include <support/support.h>
      29  #include <support/check.h>
      30  
      31  /* Test that initgroups includes secondary groups.
      32     https://bugzilla.redhat.com/show_bug.cgi?id=1906066  */
      33  
      34  /* This version uses the wrapper around the groups module.  */
      35  
      36  #define EXPECTED_N_GROUPS 4
      37  static gid_t expected_groups[] =
      38    { 20, 30, 50, 51 };
      39  
      40  static int
      41  do_test (void)
      42  {
      43    gid_t mygroups [50];
      44    int i, n;
      45  
      46    n = 50;
      47    getgrouplist ("dj", 20, mygroups, &n);
      48  
      49    TEST_COMPARE (n, EXPECTED_N_GROUPS);
      50    for (i=0; i<n; i++)
      51      TEST_COMPARE (mygroups[i], expected_groups[i]);
      52  
      53    return 0;
      54  }
      55  
      56  #include <support/test-driver.c>