1 | /* Initialization of libc after dlmopen/dlclose/dlmopen (bug 29528). Main. |
2 | Copyright (C) 2022-2024 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <stdio.h> |
20 | #include <support/check.h> |
21 | #include <support/xdlfcn.h> |
22 | |
23 | /* Run the test multiple times, to check finding a new namespace while |
24 | another namespace is already in use. This used to trigger bug 29600. */ |
25 | static void |
26 | recurse (int depth) |
27 | { |
28 | if (depth == 0) |
29 | return; |
30 | |
31 | printf (format: "info: running at depth %d\n" , depth); |
32 | void *handle = xdlmopen (LM_ID_NEWLM, filename: "tst-dlmopen-twice-mod1.so" , |
33 | RTLD_NOW); |
34 | xdlclose (handle); |
35 | handle = xdlmopen (LM_ID_NEWLM, filename: "tst-dlmopen-twice-mod2.so" , RTLD_NOW); |
36 | int (*run_check) (void) = xdlsym (handle, symbol: "run_check" ); |
37 | TEST_COMPARE (run_check (), 0); |
38 | recurse (depth: depth - 1); |
39 | xdlclose (handle); |
40 | } |
41 | |
42 | static int |
43 | do_test (void) |
44 | { |
45 | /* First run the test without nesting. */ |
46 | recurse (depth: 1); |
47 | |
48 | /* Then with nesting. The constant needs to be less than the |
49 | glibc.rtld.nns tunable (which is 4 by default). */ |
50 | recurse (depth: 3); |
51 | return 0; |
52 | } |
53 | |
54 | #include <support/test-driver.c> |
55 | |