elf/unload5.c

   1 #include <dlfcn.h>
   2 #include <stdio.h>
   3
   4 int
   5 main (void)
   6 {
   7   void *g = dlopen ("unload3mod1.so", RTLD_GLOBAL | RTLD_NOW);
   8   void *h = dlopen ("unload3mod2.so", RTLD_GLOBAL | RTLD_NOW);
   9   if (g == NULL || h == NULL)
  10     {
  11       printf ("dlopen unload3mod{1,2}.so failed: %p %p\n", g, h);
  12       return 1;
  13     }
  14   dlopen ("unload3mod4.so", RTLD_GLOBAL | RTLD_NOW);
  15   dlclose (h);
  16   dlclose (g);
  17
  18   g = dlopen ("unload3mod3.so", RTLD_GLOBAL | RTLD_NOW);
  19   h = dlopen ("unload3mod4.so", RTLD_GLOBAL | RTLD_NOW);
  20   if (g == NULL || h == NULL)
  21     {
  22       printf ("dlopen unload3mod{3,4}.so failed: %p %p\n", g, h);
  23       return 1;
  24     }
  25
  26   int (*fn) (int);
  27   fn = dlsym (h, "bar");
  28   if (fn == NULL)
  29     {
  30       puts ("dlsym failed");
  31       return 1;
  32     }
  33
  34   int val = fn (16);
  35   if (val != 24)
  36     {
  37       printf ("bar returned %d != 24\n", val);
  38       return 1;
  39     }
  40
  41   return 0;
  42 }