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 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 28 #include <stdio.h> 29 #include <sys/stat.h> 30 #include <fcntl.h> 31 #include <sys/types.h> 32 #include <sys/mman.h> 33 #include <errno.h> 34 35 extern int errno; 36 37 int 38 main(int argc, char *argv[]) 39 { 40 int fd; 41 struct stat statbuf; 42 43 if (argc != 2) { 44 (void) printf("Error: missing binary name.\n"); 45 (void) printf("Usage:\n\t%s <binary name>\n", 46 argv[0]); 47 return (1); 48 } 49 50 errno = 0; 51 52 if ((fd = open(argv[1], O_RDONLY)) < 0) { 53 perror("open"); 54 return (errno); 55 } 56 if (fstat(fd, &statbuf) < 0) { 57 perror("fstat"); 58 return (errno); 59 } 60 61 if (mmap(0, statbuf.st_size, 62 PROT_EXEC, MAP_SHARED, fd, 0) == MAP_FAILED) { 63 perror("mmap"); 64 return (errno); 65 } 66 67 return (0); 68 } 69