grp/tst-initgroups1.c

   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>