dlfcn/default.c

   1 #include <dlfcn.h>
   2 #include <stdio.h>
   3 #include <string.h>
   4
   5
   6 extern int test_in_mod1 (void *);
   7 extern int test_in_mod2 (void *);
   8
   9
  10 int
  11 main (int argc, char *argv[])
  12 {
  13   int (*ifp) (void);
  14   void *p;
  15   int result = 0;
  16   Dl_info info;
  17
  18   dladdr(main, &info);
  19   if (info.dli_fname == NULL)
  20     {
  21       printf ("%s: dladdr returns NULL dli_fname\n", __FILE__);
  22       result = 1;
  23     }
  24   else if (strcmp (info.dli_fname, argv[0]))
  25     {
  26       printf ("%s: dladdr returned '%s' as dli_fname\n", __FILE__, info.dli_fname);
  27       result = 1;
  28     }
  29   else
  30     printf ("%s: dladdr returned correct dli_fname\n", __FILE__);
  31
  32   /* Find function `main'.  */
  33   p = dlsym (RTLD_DEFAULT, "main");
  34   if (p == NULL)
  35     {
  36       printf ("%s: main not found\n", __FILE__);
  37       result = 1;
  38     }
  39   else if (p != (void *) &main)
  40     {
  41       printf ("%s: wrong address returned for main\n", __FILE__);
  42       result = 1;
  43     }
  44   else
  45     printf ("%s: main correctly found\n", __FILE__);
  46
  47   ifp = dlsym (RTLD_DEFAULT, "found_in_mod1");
  48   if ((void *) ifp == NULL)
  49     {
  50       printf ("%s: found_in_mod1 not found\n", __FILE__);
  51       result = 1;
  52     }
  53   else if (ifp () != 1)
  54     {
  55       printf ("%s: wrong address returned for found_in_mod1\n", __FILE__);
  56       result = 1;
  57     }
  58   else
  59     printf ("%s: found_in_mod1 correctly found\n", __FILE__);
  60
  61   ifp = dlsym (RTLD_DEFAULT, "found_in_mod2");
  62   if ((void *) ifp == NULL)
  63     {
  64       printf ("%s: found_in_mod2 not found\n", __FILE__);
  65       result = 1;
  66     }
  67   else if (ifp () != 2)
  68     {
  69       printf ("%s: wrong address returned for found_in_mod2\n", __FILE__);
  70       result = 1;
  71     }
  72   else
  73     printf ("%s: found_in_mod2 correctly found\n", __FILE__);
  74
  75   result |= test_in_mod1 ((void *) &main);
  76
  77   result |= test_in_mod2 ((void *) &main);
  78
  79   return result;
  80 }