OpenSolaris_b135/lib/libbc/libc/sys/common/mincore.c

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/*
 * 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 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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

/* mincore.c  SMI 12/14/90  */
#include <errno.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

#define	INCORE	1;	/* return only the incore status bit */

int
mincore(caddr_t addr, int len, char *vec)
{
	int i;

	if (len < 0) {
		errno = EINVAL;
		return (-1);
	}

	if (_syscall(SYS_mincore, addr, len, vec) == 0) {
		len /= getpagesize();
		for (i = 0; i < len; i++) {
			vec[i] &= INCORE;
		}
	}
}