1/*
2 * Copyright (c) 2013-2015 Dmitry V. Levin <ldv@altlinux.org>
3 * Copyright (c) 2013-2018 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "tests.h"
30#include <stdio.h>
31#include <unistd.h>
32#ifdef HAVE_PRCTL
33# include <sys/prctl.h>
34#endif
35
36int main(int argc, char **argv)
37{
38	if (argc < 2)
39		return 99;
40#ifdef HAVE_PRCTL
41	/* Turn off restrictions on tracing if applicable.  If the command
42	 * aren't available on this system, that's OK too.  */
43# ifndef PR_SET_PTRACER
44#  define PR_SET_PTRACER 0x59616d61
45# endif
46# ifndef PR_SET_PTRACER_ANY
47#  define PR_SET_PTRACER_ANY -1UL
48# endif
49	(void) prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY, 0, 0, 0);
50#endif
51	if (write(1, "\n", 1) != 1) {
52		perror("write");
53		return 99;
54	}
55	(void) execvp(argv[1], argv + 1);
56	perror(argv[1]);
57	return 99;
58}
59