1  /* dlopen test for PIE objects.
       2     Copyright (C) 2019-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  /* This test attempts to open the (otherwise unrelated) PIE test
      20     program elf/tst-pie1 and expects the attempt to fail.  */
      21  
      22  #include <dlfcn.h>
      23  #include <stddef.h>
      24  #include <string.h>
      25  #include <support/check.h>
      26  #include <support/support.h>
      27  
      28  static void
      29  test_mode (int mode)
      30  {
      31    char *pie_path = xasprintf ("%s/elf/tst-pie1", support_objdir_root);
      32    if (dlopen (pie_path, mode) != NULL)
      33      FAIL_EXIT1 ("dlopen succeeded unexpectedly (%d)", mode);
      34    const char *message = dlerror ();
      35    const char *expected
      36      = "cannot dynamically load position-independent executable";
      37    if (strstr (message, expected) == NULL)
      38      FAIL_EXIT1 ("unexpected error message (mode %d): %s", mode, message);
      39  }
      40  
      41  static int
      42  do_test (void)
      43  {
      44    test_mode (RTLD_LAZY);
      45    test_mode (RTLD_NOW);
      46    return 0;
      47  }
      48  
      49  #include <support/test-driver.c>