1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 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 23 /* 24 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 /* 29 * Copyright (c) 2013 by Delphix. All rights reserved. 30 */ 31 32 #include <stdio.h> 33 #include <sys/stat.h> 34 #include <fcntl.h> 35 #include <sys/types.h> 36 #include <sys/mman.h> 37 #include <errno.h> 38 39 int 40 main(int argc, char *argv[]) 41 { 42 int error, fd; 43 struct stat statbuf; 44 45 if (argc != 2) { 46 (void) printf("Error: missing binary name.\n"); 47 (void) printf("Usage:\n\t%s <binary name>\n", 48 argv[0]); 49 return (1); 50 } 51 52 errno = 0; 53 54 if ((fd = open(argv[1], O_RDONLY)) < 0) { 55 error = errno; 56 perror("open"); 57 return (error); 58 } 59 if (fstat(fd, &statbuf) < 0) { 60 error = errno; 61 perror("fstat"); 62 return (error); 63 } 64 65 if (mmap(0, statbuf.st_size, 66 PROT_EXEC, MAP_SHARED, fd, 0) == MAP_FAILED) { 67 error = errno; 68 perror("mmap"); 69 return (error); 70 } 71 72 return (0); 73 } 74