test_fcntl_lock.c

lustre 1.6.5 source code

/*
 *    This Cplant(TM) source code is the property of Sandia National
 *    Laboratories.
 *
 *    This Cplant(TM) source code is copyrighted by Sandia National
 *    Laboratories.
 *
 *    The redistribution of this Cplant(TM) source code is subject to the
 *    terms of the GNU Lesser General Public License
 *    (see cit/LGPL or http://www.gnu.org/licenses/lgpl.html)
 *
 *    Cplant(TM) Copyright 1998-2005 Sandia Corporation. 
 *    Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
 *    license for use of this work by or on behalf of the US Government.
 *    Export of this program may require a license from the United States
 *    Government.
 */

/*
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Questions or comments about this library should be sent to:
 *
 * Lee Ward
 * Sandia National Laboratories, New Mexico
 * P.O. Box 5800
 * Albuquerque, NM 87185-1110
 *
 * [e-mail]
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <getopt.h>

#if defined(SYSIO_LABEL_NAMES)
#include "sysio.h"
#endif
#include "xtio.h"
#include "test.h"

/*
 * fcntl lock tests
 *
 * Usage: test_fcnt_lock [<path> ...]
 */

void	usage(void);
void	do_tests(const char *path);

int
main(int argc, char * const argv[])
{
	int	i;
	int	err;
	extern int _test_sysio_startup(void);

	/*
	 * Parse command-line args.
	 */
	while ((i = getopt(argc, argv, "")) != -1)
		switch (i) {

		default:
			usage();
		}

	err = _test_sysio_startup();
	if (err) {
		errno = -err;
		perror("sysio startup");
		exit(1);
	}	

	while (optind < argc)
		do_tests(argv[optind++]);

	/*
	 * Clean up.
	 */
	_test_sysio_shutdown();

	return 0;
}

void
usage()
{

	(void )fprintf(stderr,
		       "Usage: test_fcntl_lock"
		       " source...\n");
	exit(1);
}

void
do_tests(const char *path)
{
	int	fd;
	int	err;
	struct flock flock;

	fd = SYSIO_INTERFACE_NAME(open)(path, O_RDONLY);
	if (fd < 0) {
		perror(path);
		return;
	}
	do {
		flock.l_type = F_RDLCK;
		flock.l_whence = SEEK_CUR;
		flock.l_start = 0;
		flock.l_len = 0;
		flock.l_pid = 0;
		err = SYSIO_INTERFACE_NAME(fcntl)(fd, F_SETLK, &flock);
		if (err)
			break;
		flock.l_type = F_UNLCK;
		err = SYSIO_INTERFACE_NAME(fcntl)(fd, F_SETLK, &flock);
		if (err)
			break;
	} while (0);

	if (err)
		perror(path);
	if (SYSIO_INTERFACE_NAME(close)(fd) != 0)
		perror(path);
}