/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License (the "License").

 * You may not use this file except in compliance with the License.

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.

 * Use is subject to license terms.

 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

/*

 *	attropen -- C library extension routine

 */

#if !defined(_LP64) && _FILE_OFFSET_BITS == 64

#pragma weak _attropen64 = attropen64

#else

#pragma weak _attropen = attropen

#endif

#include "lint.h"

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <stdlib.h>

#include <errno.h>

#include <unistd.h>

#include <stdarg.h>

#if !defined(_LP64) && _FILE_OFFSET_BITS == 64

int

attropen64(const char *file, const char *attr, int oflag, ...)

{

	int fd;

	int attrfd;

	int saverrno;

	va_list ap;

	va_start(ap, oflag);

	if ((fd = open64(file, O_RDONLY|O_NONBLOCK)) == -1) {

		va_end(ap);

		return (-1);

	}

	if ((attrfd = openat64(fd, attr, oflag | O_XATTR,

	    va_arg(ap, mode_t))) == -1) {

		saverrno = errno;

		(void) close(fd);

		errno = saverrno;

		va_end(ap);

		return (-1);

	}

	(void) close(fd);

	va_end(ap);

	return (attrfd);

}

#else

int

attropen(const char *file, const char *attr, int oflag, ...)

{

	int fd;

	int attrfd;

	int saverrno;

	va_list ap;

	va_start(ap, oflag);

	if ((fd = open(file, O_RDONLY|O_NONBLOCK)) == -1) {

		va_end(ap);

		return (-1);

	}

	if ((attrfd = openat(fd, attr, oflag | O_XATTR,

	    va_arg(ap, mode_t))) == -1) {

		saverrno = errno;

		(void) close(fd);

		errno = saverrno;

		va_end(ap);

		return (-1);

	}

	(void) close(fd);

	va_end(ap);

	return (attrfd);

}

#endif /* _FILE_OFFSET_BITS == 64 */