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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "lint.h" 30 #include <sys/types.h> 31 #include <unistd.h> 32 #include <sys/syscall.h> 33 34 /* 35 * mman.h contains "#pragma redefine_extname getpagesizes getpagesizes2". 36 * Applications that are still calling getpagesizes() instead of 37 * getpagesizes2() are 'legacy' applications that have not been recompiled 38 * since the #pragma redefine_extname change. 39 * 40 * Depending on the platform, 'legacy' applications may not be given the full 41 * set of supported page sizes to prevent them from inadvertantly using 'new' 42 * large pagesizes that might cause application failure or low system memory 43 * conditions. 44 * 45 * The first parameter to the SYS_getpagesizes syscall is effectively 46 * a 'legacy' boolean flag used as such in the kernel. 47 */ 48 int 49 getpagesizes(size_t pagesize[], int nelem) 50 { 51 return (syscall(SYS_getpagesizes, 1, pagesize, nelem)); 52 } 53 54 int 55 getpagesizes2(size_t pagesize[], int nelem) 56 { 57 return (syscall(SYS_getpagesizes, 0, pagesize, nelem)); 58 } 59