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
30 extern void libfunc (void);
31
32 int
main(int argc,char ** argv)33 main (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