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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 | ||
d78efd9f RM |
9 | #define MAPS ((struct link_map *) _r_debug.r_map) |
10 | ||
f6de2239 | 11 | #define OUT \ |
d78efd9f | 12 | for (map = MAPS; map != NULL; map = map->l_next) \ |
f6de2239 | 13 | if (map->l_type == lt_loaded) \ |
20fe49b9 UD |
14 | printf ("name = \"%s\", direct_opencount = %d\n", \ |
15 | map->l_name, (int) map->l_direct_opencount); \ | |
8699e7b1 | 16 | fflush (stdout) |
f6de2239 UD |
17 | |
18 | int | |
19 | main (void) | |
20 | { | |
21 | void *h[3]; | |
22 | struct link_map *map; | |
23 | void (*fp) (void); | |
24 | ||
25 | h[0] = dlopen ("unload2mod.so", RTLD_LAZY); | |
26 | h[1] = dlopen ("unload2mod.so", RTLD_LAZY); | |
27 | if (h[0] == NULL || h[1] == NULL) | |
28 | error (EXIT_FAILURE, errno, "cannot load \"unload2mod.so\""); | |
29 | h[2] = dlopen ("unload2dep.so", RTLD_LAZY); | |
30 | if (h[2] == NULL) | |
31 | error (EXIT_FAILURE, errno, "cannot load \"unload2dep.so\""); | |
32 | ||
33 | puts ("\nAfter loading everything:"); | |
34 | OUT; | |
35 | ||
36 | dlclose (h[0]); | |
37 | ||
38 | puts ("\nAfter unloading \"unload2mod.so\" once:"); | |
39 | OUT; | |
40 | ||
41 | dlclose (h[1]); | |
42 | ||
43 | puts ("\nAfter unloading \"unload2mod.so\" twice:"); | |
44 | OUT; | |
45 | ||
46 | fp = dlsym (h[2], "foo"); | |
47 | puts ("\nnow calling `foo'"); | |
48 | fflush (stdout); | |
49 | fp (); | |
50 | puts ("managed to call `foo'"); | |
51 | fflush (stdout); | |
52 | ||
53 | dlclose (h[2]); | |
54 | ||
55 | puts ("\nAfter unloading \"unload2dep.so\":"); | |
56 | OUT; | |
57 | ||
58 | return 0; | |
59 | } |