glibc/grp/tst-initgroups1.c

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/* Test that initgroups works.
Copyright (C) 2020-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <nss.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <errno.h>
#include <unistd.h>
#include <grp.h>
#include <support/support.h>
#include <support/check.h>
/* Test that initgroups includes secondary groups.
https://bugzilla.redhat.com/show_bug.cgi?id=1906066 */
/* This version uses the wrapper around the groups module. */
#define EXPECTED_N_GROUPS 4
static gid_t expected_groups[] =
{ 20, 30, 50, 51 };
static int
do_test (void)
{
gid_t mygroups [50];
int i, n;
n = 50;
getgrouplist ("dj", 20, mygroups, &n);
TEST_COMPARE (n, EXPECTED_N_GROUPS);
for (i=0; i<n; i++)
TEST_COMPARE (mygroups[i], expected_groups[i]);
return 0;
}
#include <support/test-driver.c>