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 #ifdef USE_TLS
  14   static const char modname[] = "tst-tlsmod3.so";
  15   int result = 0;
  16   int (*fp) (void);
  17   void *h;
  18   int i;
  19   int modid = -1;
  20
  21   for (i = 0; i < 10; ++i)
  22     {
  23       h = dlopen (modname, RTLD_LAZY);
  24       if (h == NULL)
  25         {
  26           printf ("cannot open '%s': %s\n", modname, dlerror ());
  27           exit (1);
  28         }
  29
  30       /* Dirty test code here: we peek into a private data structure.
  31          We make sure that the module gets assigned the same ID every
  32          time.  The value of the first round is used.  */
  33       if (modid == -1)
  34         modid = ((struct link_map *) h)->l_tls_modid;
  35       else if (((struct link_map *) h)->l_tls_modid != (size_t) modid)
  36         {
  37           printf ("round %d: modid now %zu, initially %d\n",
  38                   i, ((struct link_map *) h)->l_tls_modid, modid);
  39           result = 1;
  40         }
  41
  42       fp = dlsym (h, "in_dso2");
  43       if (fp == NULL)
  44         {
  45           printf ("cannot get symbol 'in_dso2': %s\n", dlerror ());
  46           exit (1);
  47         }
  48
  49       result |= fp ();
  50
  51       dlclose (h);
  52     }
  53
  54   return result;
  55 #else
  56   return 0;
  57 #endif
  58 }
  59
  60
  61 #include "../test-skeleton.c"