55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/* Test for endgrent changing errno for BZ #24696
|
|
Copyright (C) 2019 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <grp.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
|
|
#include <support/check.h>
|
|
#include <support/support.h>
|
|
|
|
/* The following test verifies that if the db NSS Service is initialized
|
|
with no database (getgrent), that a subsequent closure (endgrent) does
|
|
not set errno. In the case of the db service it is not an error to close
|
|
the service and so it should not set errno. */
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
/* Just make sure it's not there, although usually it won't be. */
|
|
unlink ("/var/db/group.db");
|
|
|
|
/* This, in conjunction with the testroot's nsswitch.conf, causes
|
|
the nss_db module to be "connected" and initialized - but the
|
|
testroot has no group.db, so no mapping will be created. */
|
|
getgrent ();
|
|
|
|
errno = 0;
|
|
|
|
/* Before the fix, this would call munmap (NULL) and set errno. */
|
|
endgrent ();
|
|
|
|
if (errno != 0)
|
|
FAIL_EXIT1 ("endgrent set errno to %d\n", errno);
|
|
|
|
return 0;
|
|
}
|
|
#include <support/test-driver.c>
|