test/tls/tst-tls6.c

   1 #include <dlfcn.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4
   5 #include <tls.h>
   6 #include <link.h>
   7 #ifdef __UCLIBC__
   8 #include "dl-elf.h"
   9 #include "dl-hash.h"
  10 #endif
  11
  12
  13 #define TEST_FUNCTION do_test ()
  14 static int
  15 do_test (void)
  16 {
  17 #ifdef USE_TLS
  18   static const char modname[] = "tst-tlsmod2.so";
  19   int result = 0;
  20   int *foop;
  21   int *foop2;
  22   int (*fp) (int, int *);
  23   void *h;
  24   int i;
  25   int modid = -1;
  26
  27   for (i = 0; i < 10; ++i)
  28     {
  29       h = dlopen (modname, RTLD_LAZY);
  30       if (h == NULL)
  31         {
  32           printf ("cannot open '%s': %s\n", modname, dlerror ());
  33           exit (1);
  34         }
  35
  36       /* Dirty test code here: we peek into a private data structure.
  37          We make sure that the module gets assigned the same ID every
  38          time.  The value of the first round is used.  */
  39 #ifdef __UCLIBC__
  40       if (modid == -1)
  41         modid = ((struct link_map *)((struct dyn_elf *)h)->dyn)->l_tls_modid;
  42       else if (((struct link_map *)((struct dyn_elf *)h)->dyn)->l_tls_modid
  43         != (size_t) modid)
  44         {
  45           printf ("round %d: modid now %zu, initially %d\n",
  46                   i,
  47                   ((struct link_map *)((struct dyn_elf *)h)->dyn)->l_tls_modid,
  48                   modid);
  49           result = 1;
  50         }
  51 #else
  52       if (modid == -1)
  53         modid = ((struct link_map *) h)->l_tls_modid;
  54       else if (((struct link_map *) h)->l_tls_modid != modid)
  55         {
  56           printf ("round %d: modid now %zd, initially %d\n",
  57                   i, ((struct link_map *) h)->l_tls_modid, modid);
  58           result = 1;
  59         }
  60 #endif
  61
  62       foop = dlsym (h, "foo");
  63       if (foop == NULL)
  64         {
  65           printf ("cannot get symbol 'foo': %s\n", dlerror ());
  66           exit (1);
  67         }
  68
  69       *foop = 42 + i;
  70
  71       fp = dlsym (h, "in_dso");
  72       if (fp == NULL)
  73         {
  74           printf ("cannot get symbol 'in_dso': %s\n", dlerror ());
  75           exit (1);
  76         }
  77
  78       result |= fp (42 + i, foop);
  79
  80       foop2 = dlsym (h, "foo");
  81       if (foop2 == NULL)
  82         {
  83           printf ("cannot get symbol 'foo' the second time: %s\n", dlerror ());
  84           exit (1);
  85         }
  86
  87       if (foop != foop2)
  88         {
  89           puts ("address of 'foo' different the second time");
  90           result = 1;
  91         }
  92       else if (*foop != 16)
  93         {
  94           puts ("foo != 16");
  95           result = 1;
  96         }
  97
  98       dlclose (h);
  99     }
 100
 101   return result;
 102 #else
 103   return 0;
 104 #endif
 105 }
 106
 107
 108 #include "../test-skeleton.c"