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
main(int argc,char ** argv)36 int 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