/*
 * Copyright (c) 2017 FUJITSU LIMITED. All rights reserved.
 * Author: Xiao Yang <yangx.jy@cn.fujitsu.com>
 *
 * This program is free software;  you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 */

/*
 * Test for EFAULT when rlim points outside the accessible address space.
 */

#define _GNU_SOURCE
#include <errno.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <stdlib.h>

#include "tst_test.h"

static void verify_setrlimit(void)
{
	int status;
	pid_t pid;

	pid = SAFE_FORK();
	if (!pid) {
		TEST(setrlimit(RLIMIT_NOFILE, (void *) -1));
		if (TEST_RETURN != -1) {
			tst_res(TFAIL, "setrlimit()  succeeded unexpectedly");
			exit(0);
		}

		/* Usually, setrlimit() should return EFAULT */
		if (TEST_ERRNO == EFAULT) {
			tst_res(TPASS | TTERRNO,
				"setrlimit() failed as expected");
		} else {
			tst_res(TFAIL | TTERRNO,
				"setrlimit() should fail with EFAULT, got");
		}

		exit(0);
	}

	SAFE_WAITPID(pid, &status, 0);

	/* If glibc has to convert between 32bit and 64bit struct rlimit
	 * in some cases, it is possible to get SegFault.
	 */
	if (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) {
		tst_res(TPASS, "setrlimit() caused SIGSEGV");
		return;
	}

	if (WIFEXITED(status) && WEXITSTATUS(status) == 0)
		return;

	tst_res(TBROK, "child %s", tst_strstatus(status));
}

static struct tst_test test = {
	.test_all = verify_setrlimit,
	.forks_child = 1,
};