1 | /* Copyright (C) 2001-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <dlfcn.h> |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | |
22 | |
23 | int |
24 | main (void) |
25 | { |
26 | const char fname[] = "modatexit.so" ; |
27 | void *h; |
28 | void (*fp) (void *); |
29 | int v = 0; |
30 | |
31 | h = dlopen (file: fname, RTLD_NOW); |
32 | if (h == NULL) |
33 | { |
34 | printf (format: "cannot open \"%s\": %s\n" , fname, dlerror ()); |
35 | exit (1); |
36 | } |
37 | |
38 | fp = dlsym (handle: h, name: "foo" ); |
39 | if (fp == NULL) |
40 | { |
41 | printf (format: "cannot find \"foo\": %s\n" , dlerror ()); |
42 | exit (1); |
43 | } |
44 | |
45 | fp (&v); |
46 | |
47 | if (dlclose (handle: h) != 0) |
48 | { |
49 | printf (format: "cannot close \"%s\": %s\n" , fname, dlerror ()); |
50 | exit (1); |
51 | } |
52 | |
53 | if (v != 1) |
54 | { |
55 | puts (s: "module unload didn't change `v'" ); |
56 | exit (1); |
57 | } |
58 | |
59 | puts (s: "finishing now" ); |
60 | |
61 | return 0; |
62 | } |
63 | |