dlfcn/defaultmod2.c

   1 #include <dlfcn.h>
   2 #include <stdio.h>
   3
   4 extern int found_in_mod1 (void);
   5 int
   6 found_in_mod1 (void)
   7 {
   8   return 1;
   9 }
  10
  11 extern int found_in_mod2 (void);
  12 int
  13 found_in_mod2 (void)
  14 {
  15   return 2;
  16 }
  17
  18
  19 extern int test_in_mod2 (int (*mainp)(int, char **));
  20 int
  21 test_in_mod2 (int (*mainp)(int, char **))
  22 {
  23   int (*ifp) (void);
  24   void *p;
  25   int result = 0;
  26
  27   /* Find function `main'.  */
  28   p = dlsym (RTLD_DEFAULT, "main");
  29   if (p == NULL)
  30     {
  31       printf ("%s: main not found\n", __FILE__);
  32       result = 1;
  33     }
  34   else if ((int (*)(int, char **))p != mainp)
  35     {
  36       printf ("%s: wrong address returned for main\n", __FILE__);
  37       result = 1;
  38     }
  39   else
  40     printf ("%s: main correctly found\n", __FILE__);
  41
  42   ifp = dlsym (RTLD_DEFAULT, "found_in_mod1");
  43   if ((void *) ifp == NULL)
  44     {
  45       printf ("%s: found_in_mod1 not found\n", __FILE__);
  46       result = 1;
  47     }
  48   else if (ifp () != 1)
  49     {
  50       printf ("%s: wrong address returned for found_in_mod1\n", __FILE__);
  51       result = 1;
  52     }
  53   else
  54     printf ("%s: found_in_mod1 correctly found\n", __FILE__);
  55
  56   ifp = dlsym (RTLD_DEFAULT, "found_in_mod2");
  57   if ((void *) ifp == NULL)
  58     {
  59       printf ("%s: found_in_mod2 not found\n", __FILE__);
  60       result = 1;
  61     }
  62   else if (ifp () != 2)
  63     {
  64       printf ("%s: wrong address returned for found_in_mod2\n", __FILE__);
  65       result = 1;
  66     }
  67   else
  68     printf ("%s: found_in_mod2 correctly found\n", __FILE__);
  69
  70   return result;
  71 }