1 /* Check compatibility of CET-enabled executable with dlopened legacy
2    shared object.
3    Copyright (C) 2018-2021 Free Software Foundation, Inc.
4    This file is part of the GNU C Library.
5 
6    The GNU C Library is free software; you can redistribute it and/or
7    modify it under the terms of the GNU Lesser General Public
8    License as published by the Free Software Foundation; either
9    version 2.1 of the License, or (at your option) any later version.
10 
11    The GNU C Library is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14    Lesser General Public License for more details.
15 
16    You should have received a copy of the GNU Lesser General Public
17    License along with the GNU C Library; if not, see
18    <https://www.gnu.org/licenses/>.  */
19 
20 #include <dlfcn.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 
24 extern int in_dso_2 (void);
25 
26 static int
do_test(void)27 do_test (void)
28 {
29   static const char modname[] = "tst-cet-legacy-mod-1.so";
30   int (*fp) (void);
31   void *h;
32 
33   h = dlopen (modname, RTLD_LAZY);
34   if (h == NULL)
35     {
36       printf ("cannot open '%s': %s\n", modname, dlerror ());
37       exit (1);
38     }
39 
40   fp = dlsym (h, "in_dso_1");
41   if (fp == NULL)
42     {
43       printf ("cannot get symbol 'in_dso': %s\n", dlerror ());
44       exit (1);
45     }
46 
47   if (fp () != 0x1234678)
48     {
49       puts ("in_dso_1 () != 0x1234678");
50       exit (1);
51     }
52 
53   if (in_dso_2 () != 0xbadbeef)
54     {
55       puts ("in_dso_2 () != 0xbadbeef");
56       exit (1);
57     }
58 
59   dlclose (h);
60 
61   return 0;
62 }
63 
64 #include <support/test-driver.c>
65