8699e7b1da
* elf/dl-close.c: Decrement opencount for all dependencies which can be removed even if the object is not yet unloaded. * elf/dl-deps.c (_dl_map_object_deps): If dependency is already in the list decrement opencount of all dependencies. * elf/dl-load.c (_dl_map_object_from_fd): Increment object of object and all dependencies. (_dl_map_object): Likewise. * elf/dl-lookup.c (add_dependency): Likewise. * elf/loadtest.c: Add debug when with more output.
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
#include <dlfcn.h>
|
|
#include <elf.h>
|
|
#include <errno.h>
|
|
#include <error.h>
|
|
#include <link.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#define OUT \
|
|
for (map = _r_debug.r_map; map != NULL; map = map->l_next) \
|
|
if (map->l_type == lt_loaded) \
|
|
printf ("name = \"%s\", opencount = %d\n", \
|
|
map->l_name, (int) map->l_opencount); \
|
|
fflush (stdout)
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
void *h[3];
|
|
struct link_map *map;
|
|
void (*fp) (void);
|
|
|
|
h[0] = dlopen ("unload2mod.so", RTLD_LAZY);
|
|
h[1] = dlopen ("unload2mod.so", RTLD_LAZY);
|
|
if (h[0] == NULL || h[1] == NULL)
|
|
error (EXIT_FAILURE, errno, "cannot load \"unload2mod.so\"");
|
|
h[2] = dlopen ("unload2dep.so", RTLD_LAZY);
|
|
if (h[2] == NULL)
|
|
error (EXIT_FAILURE, errno, "cannot load \"unload2dep.so\"");
|
|
|
|
puts ("\nAfter loading everything:");
|
|
OUT;
|
|
|
|
dlclose (h[0]);
|
|
|
|
puts ("\nAfter unloading \"unload2mod.so\" once:");
|
|
OUT;
|
|
|
|
dlclose (h[1]);
|
|
|
|
puts ("\nAfter unloading \"unload2mod.so\" twice:");
|
|
OUT;
|
|
|
|
fp = dlsym (h[2], "foo");
|
|
puts ("\nnow calling `foo'");
|
|
fflush (stdout);
|
|
fp ();
|
|
puts ("managed to call `foo'");
|
|
fflush (stdout);
|
|
|
|
dlclose (h[2]);
|
|
|
|
puts ("\nAfter unloading \"unload2dep.so\":");
|
|
OUT;
|
|
|
|
return 0;
|
|
}
|