elf/tst-tls7.c

   1 #include <dlfcn.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4
   5 #include <link.h>
   6 #include <tls.h>
   7
   8
   9 #define TEST_FUNCTION do_test ()
  10 static int
  11 do_test (void)
  12 {
  13   static const char modname[] = "tst-tlsmod3.so";
  14   int result = 0;
  15   int (*fp) (void);
  16   void *h;
  17   int i;
  18   int modid = -1;
  19
  20   for (i = 0; i < 10; ++i)
  21     {
  22       h = dlopen (modname, RTLD_LAZY);
  23       if (h == NULL)
  24         {
  25           printf ("cannot open '%s': %s\n", modname, dlerror ());
  26           exit (1);
  27         }
  28
  29       /* Dirty test code here: we peek into a private data structure.
  30          We make sure that the module gets assigned the same ID every
  31          time.  The value of the first round is used.  */
  32       if (modid == -1)
  33         modid = ((struct link_map *) h)->l_tls_modid;
  34       else if (((struct link_map *) h)->l_tls_modid != (size_t) modid)
  35         {
  36           printf ("round %d: modid now %zu, initially %d\n",
  37                   i, ((struct link_map *) h)->l_tls_modid, modid);
  38           result = 1;
  39         }
  40
  41       fp = dlsym (h, "in_dso2");
  42       if (fp == NULL)
  43         {
  44           printf ("cannot get symbol 'in_dso2': %s\n", dlerror ());
  45           exit (1);
  46         }
  47
  48       result |= fp ();
  49
  50       dlclose (h);
  51     }
  52
  53   return result;
  54 }
  55
  56
  57 #include "../test-skeleton.c"