mcst-linux-kernel/glibc-2.35/elf/tst-dlmopen1mod.c

60 lines
975 B
C

#include <dlfcn.h>
#include <stdio.h>
#include <gnu/lib-names.h>
static int cnt;
static void
__attribute ((constructor))
constr (void)
{
++cnt;
}
int
foo (Lmid_t ns2)
{
void *h = dlopen (LIBC_SO, RTLD_LAZY|RTLD_NOLOAD);
if (h == NULL)
{
printf ("cannot get handle for %s: %s\n", LIBC_SO, dlerror ());
return 1;
}
Lmid_t ns = -10;
if (dlinfo (h, RTLD_DI_LMID, &ns) != 0)
{
printf ("dlinfo for %s in %s failed: %s\n",
LIBC_SO, __func__, dlerror ());
return 1;
}
if (ns != ns2)
{
printf ("namespace for %s not LM_ID_BASE\n", LIBC_SO);
return 1;
}
if (dlclose (h) != 0)
{
printf ("dlclose for %s in %s failed: %s\n",
LIBC_SO, __func__, dlerror ());
return 1;
}
if (cnt == 0)
{
puts ("constructor did not run");
return 1;
}
else if (cnt != 1)
{
puts ("constructor did not run exactly once");
return 1;
}
return 0;
}