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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include "lint.h" 28 #include <sys/types.h> 29 #include <sys/mman.h> 30 #include <errno.h> 31 32 /* 33 * SUSv3 - memory advisory information and alignment control 34 * 35 * The POSIX_MADV_* constants below are defined in <sys/mman.h> 36 * to have the same values as the corresponding MADV_* constants, 37 * also defined in <sys/mman.h>, so a direct call to madvise() 38 * can be made here without further ado. 39 */ 40 int 41 posix_madvise(void *addr, size_t len, int advice) 42 { 43 switch (advice) { 44 case POSIX_MADV_NORMAL: 45 case POSIX_MADV_SEQUENTIAL: 46 case POSIX_MADV_RANDOM: 47 case POSIX_MADV_WILLNEED: 48 case POSIX_MADV_DONTNEED: 49 break; 50 default: 51 return (EINVAL); 52 } 53 if (madvise(addr, len, advice) == 0) 54 return (0); 55 return (errno); 56 } 57