/*
 * Copyright (C) 2015 Cedric Hnyda ced.hnyda@gmail.com
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 */

/*
 * AUTHOR   : Cédric Hnyda
 * DATE STARTED : 06/13/2015
 *
 *  Calls getrandom(2) with a NULL buffer and expects failure.
 *
 */

#include "lapi/getrandom.h"
#include "lapi/syscalls.h"
#include "tst_test.h"

static int modes[] = {0, GRND_RANDOM, GRND_NONBLOCK,
		      GRND_RANDOM | GRND_NONBLOCK};

static void verify_getrandom(unsigned int n)
{
	TEST(tst_syscall(__NR_getrandom, NULL, 100, modes[n]));

	if (TEST_RETURN == -1) {
		tst_res(TPASS | TTERRNO, "getrandom returned %ld",
			TEST_RETURN);
	} else {
		tst_res(TFAIL | TTERRNO, "getrandom failed");
	}
}

static struct tst_test test = {
	.tcnt = ARRAY_SIZE(modes),
	.test = verify_getrandom,
};