/*

 * 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"

#include "lint.h"

#include <sys/types.h>

#include <sys/mman.h>

#include <errno.h>

/*

 * SUSv3 - memory advisory information and alignment control

 *

 * The POSIX_MADV_* constants below are defined in <sys/mman.h>

 * to have the same values as the corresponding MADV_* constants,

 * also defined in <sys/mman.h>, so a direct call to madvise()

 * can be made here without further ado.

 */

int

posix_madvise(void *addr, size_t len, int advice)

{

	switch (advice) {

	case POSIX_MADV_NORMAL:

	case POSIX_MADV_SEQUENTIAL:

	case POSIX_MADV_RANDOM:

	case POSIX_MADV_WILLNEED:

	case POSIX_MADV_DONTNEED:

		break;

	default:

		return (EINVAL);

	}

	if (madvise(addr, len, advice) == 0)

		return (0);

	return (errno);

}