1/* Test program for opening already deleted running binaries.
2   Copyright (C) 2014 Red Hat, Inc.
3   This file is part of elfutils.
4
5   This file is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   elfutils is distributed in the hope that it will be useful, but
11   WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
17
18#include <config.h>
19#include <locale.h>
20#include <stdlib.h>
21#include <unistd.h>
22#include <assert.h>
23#include <stdio.h>
24#include <error.h>
25#include <errno.h>
26#ifdef __linux__
27#include <sys/prctl.h>
28#endif
29
30extern void libfunc (void);
31
32int
33main (int argc __attribute__ ((unused)), char **argv __attribute__ ((unused)))
34{
35  /* Set locale.  */
36  (void) setlocale (LC_ALL, "");
37
38  pid_t pid = fork ();
39  assert (pid != -1);
40  if (pid == 0)
41    {
42      int err = close (0);
43      assert (!err);
44      err = close (1);
45      assert (!err);
46      err = close (2);
47      assert (!err);
48      /* Make sure eu-stack -p works on this process even with
49	 "restricted ptrace".  */
50#ifdef PR_SET_PTRACER_ANY
51      prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY, 0, 0, 0);
52#endif
53      libfunc ();
54      abort ();
55    }
56  printf ("%d\n", pid);
57  return EXIT_SUCCESS;
58}
59