/*

 * libhugetlbfs - Easy use of Linux hugepages

 * Copyright (C) 2005-2006 David Gibson & Adam Litke, IBM Corporation.

 *

 * This 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.

 *

 * This 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 this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

 */

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <sys/mman.h>

#include <hugetlbfs.h>

#include "hugetests.h"

#define RANDOM_CONSTANT	0x1234ABCD

int main(int argc, char *argv[])

{

	long hpage_size;

	int fd;

	void *p;

	unsigned int *q;

	int i;

	test_init(argc, argv);

	hpage_size = check_hugepagesize();

	fd = hugetlbfs_unlinked_fd();

	if (fd < 0)

		FAIL("hugetlbfs_unlinked_fd()");

	p = mmap(NULL, hpage_size, PROT_READ|PROT_WRITE, MAP_SHARED,

		 fd, 0);

	if (p == MAP_FAILED)

		FAIL("mmap(): %s", strerror(errno));

	q = p;

	for (i = 0; i < (hpage_size / sizeof(*q)); i++) {

		q[i] = RANDOM_CONSTANT ^ i;

	}

	for (i = 0; i < (hpage_size / sizeof(*q)); i++) {

		if (q[i] != (RANDOM_CONSTANT ^ i))

			FAIL("Mismatch at offset 0x%x: 0x%x instead of 0x%x",

			     i, q[i], RANDOM_CONSTANT ^ i);

	}

	PASS();

}