xref: /titanic_50/usr/src/lib/libbc/libc/gen/common/madvise.c (revision bdfc6d18da790deeec2e0eb09c625902defe2498)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 #pragma ident	"%Z%%M%	%I%	%E% SMI"
23 
24 /*
25  * Copyright (c) 1988 by Sun Microsystems, Inc.
26  */
27 
28 #include <sys/types.h>
29 #include <sys/mman.h>
30 #include <errno.h>
31 
32 /*
33  * Function to provide advise to vm system to optimize it's
34  *   characteristics for a particular application
35  */
36 
37 /*LINTLIBRARY*/
38 madvise(addr, len, advice)
39 	caddr_t addr;
40 	u_int len;
41 	int advice;
42 {
43 	if (len == 0) {
44 		errno = EINVAL;
45 		return (-1);
46 	}
47 	return (mctl(addr, len, MC_ADVISE, advice));
48 }
49 
50 /*
51  * This is only here so programs that use vadvise will not fail
52  * because it is not in the bcp libc.
53  */
54 int
55 vadvise(int param) {
56 	return (0);
57 }
58