glibc/elf/lateglobal.c

48 lines
854 B
C

#include <dlfcn.h>
#include <mcheck.h>
#include <stdio.h>
#include <stdlib.h>
int
main (void)
{
void *h[2];
int fail;
int (*fp) (void);
mtrace ();
h[0] = dlopen ("ltglobmod1.so", RTLD_LAZY);
if (h[0] == NULL)
{
printf ("%s: cannot open %s: %s",
__FUNCTION__, "ltglobmod1.so", dlerror ());
exit (EXIT_FAILURE);
}
h[1] = dlopen ("ltglobmod2.so", RTLD_LAZY);
if (h[1] == NULL)
{
printf ("%s: cannot open %s: %s",
__FUNCTION__, "ltglobmod2.so", dlerror ());
exit (EXIT_FAILURE);
}
puts ("loaded \"ltglobmod1.so\" without RTLD_GLOBAL");
fp = dlsym (h[1], "foo");
if (fp == NULL)
{
printf ("cannot get address of `foo': %s", dlerror ());
exit (EXIT_FAILURE);
}
fail = fp ();
puts ("back in main");
dlclose (h[1]);
dlclose (h[0]);
return fail;
}