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ead3cea7 AJ |
1 | /* Verify that RTLD_NOLOAD works as expected. |
2 | ||
bfff8b1b | 3 | Copyright (C) 2016-2017 Free Software Foundation, Inc. |
ead3cea7 AJ |
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 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include <dlfcn.h> | |
21 | #include <stdio.h> | |
22 | #include <gnu/lib-names.h> | |
23 | ||
24 | static int | |
25 | do_test (void) | |
26 | { | |
27 | /* Test that no object is loaded with RTLD_NOLOAD. */ | |
28 | void *h1 = dlopen (LIBM_SO, RTLD_LAZY | RTLD_NOLOAD); | |
29 | if (h1 != NULL) | |
30 | { | |
31 | printf ("h1: DSO has been loaded while it should have not\n"); | |
32 | return 1; | |
33 | } | |
34 | ||
35 | /* This used to segfault in some glibc versions. */ | |
36 | void *h2 = dlopen (LIBM_SO, RTLD_LAZY | RTLD_NOLOAD | RTLD_NODELETE); | |
37 | if (h2 != NULL) | |
38 | { | |
39 | printf ("h2: DSO has been loaded while it should have not\n"); | |
40 | return 1; | |
41 | } | |
42 | ||
43 | /* Test that loading an already loaded object returns the same. */ | |
44 | void *h3 = dlopen (LIBM_SO, RTLD_LAZY); | |
45 | if (h3 == NULL) | |
46 | { | |
47 | printf ("h3: failed to open DSO: %s\n", dlerror ()); | |
48 | return 1; | |
49 | } | |
50 | void *h4 = dlopen (LIBM_SO, RTLD_LAZY | RTLD_NOLOAD); | |
51 | if (h4 == NULL) | |
52 | { | |
53 | printf ("h4: failed to open DSO: %s\n", dlerror ()); | |
54 | return 1; | |
55 | } | |
56 | if (h4 != h3) | |
57 | { | |
58 | printf ("h4: should return the same object\n"); | |
59 | return 1; | |
60 | } | |
61 | ||
62 | /* Cleanup */ | |
63 | if (dlclose (h3) != 0) | |
64 | { | |
65 | printf ("h3: dlclose failed: %s\n", dlerror ()); | |
66 | return 1; | |
67 | } | |
68 | ||
69 | return 0; | |
70 | } | |
71 | ||
72 | #define TEST_FUNCTION do_test () | |
73 | #include "../test-skeleton.c" |