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Commit | Line | Data |
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f6de2239 UD |
1 | #include <dlfcn.h> |
2 | #include <elf.h> | |
3 | #include <errno.h> | |
4 | #include <error.h> | |
5 | #include <link.h> | |
6 | #include <stdio.h> | |
7 | #include <stdlib.h> | |
8 | ||
9 | #define OUT \ | |
10 | for (map = _r_debug.r_map; map != NULL; map = map->l_next) \ | |
11 | if (map->l_type == lt_loaded) \ | |
12 | printf ("name = \"%s\", opencount = %d\n", \ | |
8699e7b1 UD |
13 | map->l_name, (int) map->l_opencount); \ |
14 | fflush (stdout) | |
f6de2239 UD |
15 | |
16 | int | |
17 | main (void) | |
18 | { | |
19 | void *h[3]; | |
20 | struct link_map *map; | |
21 | void (*fp) (void); | |
22 | ||
23 | h[0] = dlopen ("unload2mod.so", RTLD_LAZY); | |
24 | h[1] = dlopen ("unload2mod.so", RTLD_LAZY); | |
25 | if (h[0] == NULL || h[1] == NULL) | |
26 | error (EXIT_FAILURE, errno, "cannot load \"unload2mod.so\""); | |
27 | h[2] = dlopen ("unload2dep.so", RTLD_LAZY); | |
28 | if (h[2] == NULL) | |
29 | error (EXIT_FAILURE, errno, "cannot load \"unload2dep.so\""); | |
30 | ||
31 | puts ("\nAfter loading everything:"); | |
32 | OUT; | |
33 | ||
34 | dlclose (h[0]); | |
35 | ||
36 | puts ("\nAfter unloading \"unload2mod.so\" once:"); | |
37 | OUT; | |
38 | ||
39 | dlclose (h[1]); | |
40 | ||
41 | puts ("\nAfter unloading \"unload2mod.so\" twice:"); | |
42 | OUT; | |
43 | ||
44 | fp = dlsym (h[2], "foo"); | |
45 | puts ("\nnow calling `foo'"); | |
46 | fflush (stdout); | |
47 | fp (); | |
48 | puts ("managed to call `foo'"); | |
49 | fflush (stdout); | |
50 | ||
51 | dlclose (h[2]); | |
52 | ||
53 | puts ("\nAfter unloading \"unload2dep.so\":"); | |
54 | OUT; | |
55 | ||
56 | return 0; | |
57 | } |