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 dyn_elf *) h)->dyn->l_tls_modid;
  42       else if (((struct dyn_elf *)h)->dyn->l_tls_modid != (size_t) modid)
  43         {
  44           printf ("round %d: modid now %zu, initially %d\n",
  45                   i,
  46                   ((struct dyn_elf *)h)->dyn->l_tls_modid,
  47                   modid);
  48           result = 1;
  49         }
  50 #else
  51       if (modid == -1)
  52         modid = ((struct link_map *) h)->l_tls_modid;
  53       else if (((struct link_map *) h)->l_tls_modid != modid)
  54         {
  55           printf ("round %d: modid now %zd, initially %d\n",
  56                   i, ((struct link_map *) h)->l_tls_modid, modid);
  57           result = 1;
  58         }
  59 #endif
  60
  61       foop = dlsym (h, "foo");
  62       if (foop == NULL)
  63         {
  64           printf ("cannot get symbol 'foo': %s\n", dlerror ());
  65           exit (1);
  66         }
  67
  68       *foop = 42 + i;
  69
  70       fp = dlsym (h, "in_dso");
  71       if (fp == NULL)
  72         {
  73           printf ("cannot get symbol 'in_dso': %s\n", dlerror ());
  74           exit (1);
  75         }
  76
  77       result |= fp (42 + i, foop);
  78
  79       foop2 = dlsym (h, "foo");
  80       if (foop2 == NULL)
  81         {
  82           printf ("cannot get symbol 'foo' the second time: %s\n", dlerror ());
  83           exit (1);
  84         }
  85
  86       if (foop != foop2)
  87         {
  88           puts ("address of 'foo' different the second time");
  89           result = 1;
  90         }
  91       else if (*foop != 16)
  92         {
  93           puts ("foo != 16");
  94           result = 1;
  95         }
  96
  97       dlclose (h);
  98     }
  99
 100   return result;
 101 #else
 102   return 0;
 103 #endif
 104 }
 105
 106
 107 #include "../test-skeleton.c"