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 * Copyright (c) 1987 Sun Microsystems, Inc. 25 */ 26 27 #include <fcntl.h> 28 #include <sys/mman.h> 29 30 /* allocate the buffer to be used by profil(2) */ 31 char * 32 _alloc_profil_buf(size) 33 int size; 34 { 35 char *buf; 36 int fd; 37 38 if((fd = open("/dev/zero",O_RDONLY)) == -1 ) { 39 return (char*) -1; 40 } 41 buf = (char*) mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0); 42 close(fd); 43 return buf; 44 } 45