Blame elf/tst-tls7.c

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#include <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <link.h>
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static int
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do_test (void)
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{
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  static const char modname[] = "tst-tlsmod3.so";
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  int result = 0;
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  int (*fp) (void);
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  void *h;
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  int i;
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  int modid = -1;
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  for (i = 0; i < 10; ++i)
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    {
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      h = dlopen (modname, RTLD_LAZY);
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      if (h == NULL)
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	{
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	  printf ("cannot open '%s': %s\n", modname, dlerror ());
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	  exit (1);
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	}
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      /* Dirty test code here: we peek into a private data structure.
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	 We make sure that the module gets assigned the same ID every
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	 time.  The value of the first round is used.  */
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      if (modid == -1)
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	modid = ((struct link_map *) h)->l_tls_modid;
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      else if (((struct link_map *) h)->l_tls_modid != (size_t) modid)
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	{
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	  printf ("round %d: modid now %zu, initially %d\n",
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		  i, ((struct link_map *) h)->l_tls_modid, modid);
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	  result = 1;
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	}
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      fp = dlsym (h, "in_dso2");
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      if (fp == NULL)
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	{
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	  printf ("cannot get symbol 'in_dso2': %s\n", dlerror ());
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	  exit (1);
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	}
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      result |= fp ();
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      dlclose (h);
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    }
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  return result;
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}
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#include <support/test-driver.c>