1 | /* Verify that an already opened DSO opened agained with RTLD_NODELETE actually |
2 | sets the NODELETE flag. |
3 | |
4 | Copyright (C) 2015-2022 Free Software Foundation, Inc. |
5 | This file is part of the GNU C Library. |
6 | |
7 | The GNU C Library is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU Lesser General Public |
9 | License as published by the Free Software Foundation; either |
10 | version 2.1 of the License, or (at your option) any later version. |
11 | |
12 | The GNU C Library is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | Lesser General Public License for more details. |
16 | |
17 | You should have received a copy of the GNU Lesser General Public |
18 | License along with the GNU C Library; if not, see |
19 | <https://www.gnu.org/licenses/>. */ |
20 | |
21 | #include <dlfcn.h> |
22 | #include <stdio.h> |
23 | |
24 | int |
25 | do_test (void) |
26 | { |
27 | void *h1 = dlopen (file: "$ORIGIN/tst-nodelete-opened-lib.so" , RTLD_LAZY); |
28 | if (h1 == NULL) |
29 | { |
30 | printf (format: "h1: failed to open DSO: %s\n" , dlerror ()); |
31 | return 1; |
32 | } |
33 | |
34 | void *h2 = dlopen (file: "$ORIGIN/tst-nodelete-opened-lib.so" , |
35 | RTLD_LAZY | RTLD_NODELETE); |
36 | if (h2 == NULL) |
37 | { |
38 | printf (format: "h2: failed to open DSO: %s\n" , dlerror ()); |
39 | return 1; |
40 | } |
41 | |
42 | int *foo = dlsym (handle: h2, name: "foo_var" ); |
43 | if (foo == NULL) |
44 | { |
45 | printf (format: "failed to load symbol foo_var: %s\n" , dlerror ()); |
46 | return 1; |
47 | } |
48 | |
49 | if (dlclose (handle: h1) != 0) |
50 | { |
51 | printf (format: "h1: dlclose failed: %s\n" , dlerror ()); |
52 | return 1; |
53 | } |
54 | |
55 | if (dlclose (handle: h2) != 0) |
56 | { |
57 | printf (format: "h2: dlclose failed: %s\n" , dlerror ()); |
58 | return 1; |
59 | } |
60 | |
61 | /* This FOO dereference will crash with a segfault if the DSO was |
62 | unloaded. */ |
63 | printf (format: "foo == %d\n" , *foo); |
64 | |
65 | return 0; |
66 | } |
67 | |
68 | #include <support/test-driver.c> |
69 | |