/*
 * Copyright (c) Wipro Technologies Ltd, 2003.  All Rights Reserved.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */

/*
 * Check that ustat() succeeds given correct parameters.
 */

#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "config.h"
#include "test.h"
#include "safe_macros.h"

char *TCID = "ustat01";

#ifdef HAVE_USTAT
# ifdef HAVE_SYS_USTAT_H
#  include <sys/ustat.h>
# endif

static void setup(void);

int TST_TOTAL = 1;

static dev_t dev_num;
static struct ustat ubuf;

int main(int argc, char *argv[])
{
	int lc, i;

	tst_parse_opts(argc, argv, NULL, NULL);

	setup();

	for (lc = 0; TEST_LOOPING(lc); lc++) {

		tst_count = 0;

		for (i = 0; i < TST_TOTAL; i++) {
			TEST(ustat(dev_num, &ubuf));

			if (TEST_RETURN == -1 && TEST_ERRNO == ENOSYS)
				tst_brkm(TCONF, NULL, "ustat not supported");

			if (TEST_RETURN == -1) {
				tst_resm(TFAIL, "ustat(2) failed and set"
					 "the errno to %d : %s",
					 TEST_ERRNO, strerror(TEST_ERRNO));
			} else {
				tst_resm(TPASS, "ustat(2) passed");
			}
		}
	}

	tst_exit();
}

static void setup(void)
{
	struct stat buf;

	tst_sig(NOFORK, DEF_HANDLER, NULL);

	TEST_PAUSE;

	/* Find a valid device number */
	SAFE_STAT(NULL, "/", &buf);

	dev_num = buf.st_dev;
}
#else
int main(void)
{
	tst_brkm(TCONF, NULL, "system doesn't have ustat() support");
}
#endif