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 * Copyright (c) 2013 by Delphix. All rights reserved. 29 */ 30 31 #include <stdio.h> 32 #include <sys/stat.h> 33 #include <fcntl.h> 34 #include <sys/types.h> 35 #include <sys/mman.h> 36 #include <errno.h> 37 38 extern int errno; 39 40 int 41 main(int argc, char *argv[]) 42 { 43 int fd; 44 struct stat statbuf; 45 46 if (argc != 2) { 47 (void) printf("Error: missing binary name.\n"); 48 (void) printf("Usage:\n\t%s <binary name>\n", 49 argv[0]); 50 return (1); 51 } 52 53 errno = 0; 54 55 if ((fd = open(argv[1], O_RDONLY)) < 0) { 56 perror("open"); 57 return (errno); 58 } 59 if (fstat(fd, &statbuf) < 0) { 60 perror("fstat"); 61 return (errno); 62 } 63 64 if (mmap(0, statbuf.st_size, 65 PROT_EXEC, MAP_SHARED, fd, 0) == MAP_FAILED) { 66 perror("mmap"); 67 return (errno); 68 } 69 70 return (0); 71 } 72