elf/tst-tls8.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 modname1[] = "tst-tlsmod3.so";
  15   static const char modname2[] = "tst-tlsmod4.so";
  16   int result = 0;
  17   int (*fp1) (void);
  18   int (*fp2) (int, int *);
  19   void *h1;
  20   void *h2;
  21   int i;
  22   size_t modid1 = (size_t) -1;
  23   size_t modid2 = (size_t) -1;
  24   int *bazp;
  25
  26   for (i = 0; i < 10; ++i)
  27     {
  28       h1 = dlopen (modname1, RTLD_LAZY);
  29       if (h1 == NULL)
  30         {
  31           printf ("cannot open '%s': %s\n", modname1, dlerror ());
  32           exit (1);
  33         }
  34
  35       /* Dirty test code here: we peek into a private data structure.
  36          We make sure that the module gets assigned the same ID every
  37          time.  The value of the first round is used.  */
  38       if (modid1 == (size_t) -1)
  39         modid1 = ((struct link_map *) h1)->l_tls_modid;
  40       else if (((struct link_map *) h1)->l_tls_modid != modid1)
  41         {
  42           printf ("round %d: modid now %zd, initially %zd\n",
  43                   i, ((struct link_map *) h1)->l_tls_modid, modid1);
  44           result = 1;
  45         }
  46
  47       fp1 = dlsym (h1, "in_dso2");
  48       if (fp1 == NULL)
  49         {
  50           printf ("cannot get symbol 'in_dso2' in %s\n", modname1);
  51           exit (1);
  52         }
  53
  54       result |= fp1 ();
  55
  56
  57
  58       h2 = dlopen (modname2, RTLD_LAZY);
  59       if (h2 == NULL)
  60         {
  61           printf ("cannot open '%s': %s\n", modname2, dlerror ());
  62           exit (1);
  63         }
  64
  65       /* Dirty test code here: we peek into a private data structure.
  66          We make sure that the module gets assigned the same ID every
  67          time.  The value of the first round is used.  */
  68       if (modid2 == (size_t) -1)
  69         modid2 = ((struct link_map *) h1)->l_tls_modid;
  70       else if (((struct link_map *) h1)->l_tls_modid != modid2)
  71         {
  72           printf ("round %d: modid now %zd, initially %zd\n",
  73                   i, ((struct link_map *) h1)->l_tls_modid, modid2);
  74           result = 1;
  75         }
  76
  77       bazp = dlsym (h2, "baz");
  78       if (bazp == NULL)
  79         {
  80           printf ("cannot get symbol 'baz' in %s\n", modname2);
  81           exit (1);
  82         }
  83
  84       *bazp = 42 + i;
  85
  86       fp2 = dlsym (h2, "in_dso");
  87       if (fp2 == NULL)
  88         {
  89           printf ("cannot get symbol 'in_dso' in %s\n", modname2);
  90           exit (1);
  91         }
  92
  93       result |= fp2 (42 + i, bazp);
  94
  95       dlclose (h1);
  96       dlclose (h2);
  97
  98
  99       h1 = dlopen (modname1, RTLD_LAZY);
 100       if (h1 == NULL)
 101         {
 102           printf ("cannot open '%s': %s\n", modname1, dlerror ());
 103           exit (1);
 104         }
 105
 106       /* Dirty test code here: we peek into a private data structure.
 107          We make sure that the module gets assigned the same ID every
 108          time.  The value of the first round is used.  */
 109       if (((struct link_map *) h1)->l_tls_modid != modid1)
 110         {
 111           printf ("round %d: modid now %zd, initially %zd\n",
 112                   i, ((struct link_map *) h1)->l_tls_modid, modid1);
 113           result = 1;
 114         }
 115
 116       fp1 = dlsym (h1, "in_dso2");
 117       if (fp1 == NULL)
 118         {
 119           printf ("cannot get symbol 'in_dso2' in %s\n", modname1);
 120           exit (1);
 121         }
 122
 123       result |= fp1 ();
 124
 125
 126
 127       h2 = dlopen (modname2, RTLD_LAZY);
 128       if (h2 == NULL)
 129         {
 130           printf ("cannot open '%s': %s\n", modname2, dlerror ());
 131           exit (1);
 132         }
 133
 134       /* Dirty test code here: we peek into a private data structure.
 135          We make sure that the module gets assigned the same ID every
 136          time.  The value of the first round is used.  */
 137       if (((struct link_map *) h1)->l_tls_modid != modid2)
 138         {
 139           printf ("round %d: modid now %zd, initially %zd\n",
 140                   i, ((struct link_map *) h1)->l_tls_modid, modid2);
 141           result = 1;
 142         }
 143
 144       bazp = dlsym (h2, "baz");
 145       if (bazp == NULL)
 146         {
 147           printf ("cannot get symbol 'baz' in %s\n", modname2);
 148           exit (1);
 149         }
 150
 151       *bazp = 62 + i;
 152
 153       fp2 = dlsym (h2, "in_dso");
 154       if (fp2 == NULL)
 155         {
 156           printf ("cannot get symbol 'in_dso' in %s\n", modname2);
 157           exit (1);
 158         }
 159
 160       result |= fp2 (62 + i, bazp);
 161
 162       /* This time the dlclose calls are in reverse order.  */
 163       dlclose (h2);
 164       dlclose (h1);
 165     }
 166
 167   return result;
 168 #else
 169   return 0;
 170 #endif
 171 }
 172
 173
 174 #include "../test-skeleton.c"