sysdeps/x86/tst-cet-legacy-4.c

   1 /* Check compatibility of CET-enabled executable with dlopened legacy
   2    shared object.
   3    Copyright (C) 2018-2019 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <dlfcn.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23
  24 static int
  25 do_test (void)
  26 {
  27   static const char modname[] = "tst-cet-legacy-mod-4.so";
  28   int (*fp) (void);
  29   void *h;
  30
  31   h = dlopen (modname, RTLD_LAZY);
  32   if (h == NULL)
  33     {
  34       printf ("cannot open '%s': %s\n", modname, dlerror ());
  35       exit (1);
  36     }
  37
  38   fp = dlsym (h, "test");
  39   if (fp == NULL)
  40     {
  41       printf ("cannot get symbol 'test': %s\n", dlerror ());
  42       exit (1);
  43     }
  44
  45   if (fp () != 0)
  46     {
  47       puts ("test () != 0");
  48       exit (1);
  49     }
  50
  51   dlclose (h);
  52
  53   return 0;
  54 }
  55
  56 #include <support/test-driver.c>