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 | |
24 | extern int in_dso_2 (void); |
25 | |
26 | static int |
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 (file: modname, RTLD_LAZY); |
34 | if (h == NULL) |
35 | { |
36 | printf (format: "cannot open '%s': %s\n" , modname, dlerror ()); |
37 | exit (1); |
38 | } |
39 | |
40 | fp = dlsym (handle: h, name: "in_dso_1" ); |
41 | if (fp == NULL) |
42 | { |
43 | printf (format: "cannot get symbol 'in_dso': %s\n" , dlerror ()); |
44 | exit (1); |
45 | } |
46 | |
47 | if (fp () != 0x1234678) |
48 | { |
49 | puts (s: "in_dso_1 () != 0x1234678" ); |
50 | exit (1); |
51 | } |
52 | |
53 | if (in_dso_2 () != 0xbadbeef) |
54 | { |
55 | puts (s: "in_dso_2 () != 0xbadbeef" ); |
56 | exit (1); |
57 | } |
58 | |
59 | dlclose (handle: h); |
60 | |
61 | return 0; |
62 | } |
63 | |
64 | #include <support/test-driver.c> |
65 | |