1  /* Check compatibility of CET-enabled executable with dlopened legacy
       2     shared object.
       3     Copyright (C) 2018-2023 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  #include <string.h>
      24  
      25  #include <support/check.h>
      26  
      27  static int
      28  do_test (void)
      29  {
      30    static const char modname[] = "tst-cet-legacy-mod-4.so";
      31    int (*fp) (void);
      32    void *h;
      33  
      34    h = dlopen (modname, RTLD_LAZY);
      35    if (h == NULL)
      36      {
      37        const char *err = dlerror ();
      38        if (!strstr (err, "rebuild shared object with IBT support enabled"))
      39  	FAIL_EXIT1 ("incorrect dlopen '%s' error: %s\n", modname, err);
      40        return 0;
      41      }
      42  
      43    fp = dlsym (h, "test");
      44    if (fp == NULL)
      45      FAIL_EXIT1 ("cannot get symbol 'test': %s\n", dlerror ());
      46  
      47    if (fp () != 0)
      48      FAIL_EXIT1 ("test () != 0");
      49  
      50    dlclose (h);
      51  
      52    return 0;
      53  }
      54  
      55  #include <support/test-driver.c>