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
38extern int errno;
39
40int
41main(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