1/* Check compatibility of CET-enabled executable with dlopened legacy
2 shared object.
3 Copyright (C) 2018-2022 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
24extern int in_dso_2 (void);
25
26static int
27do_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

source code of glibc/sysdeps/x86/tst-cet-legacy-2.c