config root man

/*-
 * Copyright (c) 2000 Paul Saab <ps@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
#endif /* not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/usr.bin/fsync/fsync.c 140865 2005-01-26 15:17:25Z delphij $");

#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include <unistd.h>

static void	usage(void);

int
main(int argc, char *argv[])
{
	int fd;
	int i;
	int rval;
	
	if (argc < 2) {
		usage();
		/* NOTREACHED */
	}
	
	rval = EX_OK;
	for (i = 1; i < argc; ++i) {
		if ((fd = open(argv[i], O_RDONLY)) == -1) {
			warn("open %s", argv[i]);
			if (rval == EX_OK)
				rval = EX_NOINPUT;
			continue;
		}

		if (fsync(fd) == -1) {
			warn("fsync %s", argv[i]);
			if (rval == EX_OK)
				rval = EX_OSERR;
		}
		close(fd);
	}
	exit(rval);
	/* NOTREACHED */
}

static void
usage(void)
{

	fprintf(stderr, "usage: fsync file ...\n");
	exit(EX_USAGE);
	/* NOTREACHED */
}