1  /* BZ #19408 linux personality syscall wrapper test.
       2  
       3     Copyright (C) 2015-2023 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 <errno.h>
      21  #include <sys/personality.h>
      22  #include <support/check.h>
      23  
      24  static int
      25  do_test (void)
      26  {
      27    unsigned int test_persona = -EINVAL;
      28    unsigned int saved_persona;
      29  
      30    errno = 0xdefaced;
      31    saved_persona = personality (0xffffffff);
      32  
      33    unsigned int r = personality (test_persona);
      34    if (r == -1)
      35      {
      36        /* The syscall argument might be filtered by kernel, so the
      37          test can not check for the bug issue.  */
      38        if (errno == EPERM)
      39         FAIL_UNSUPPORTED ("personality syscall argument are filtered");
      40        FAIL_EXIT1 ("personality (%#x) failed: %m", test_persona);
      41      }
      42  
      43    TEST_COMPARE (r, saved_persona);
      44    TEST_VERIFY (personality (0xffffffff) != -1);
      45    TEST_VERIFY (personality (PER_LINUX) != -1);
      46    TEST_COMPARE (personality (0xffffffff), PER_LINUX);
      47    TEST_COMPARE (0xdefaced, errno);
      48  
      49    personality (saved_persona);
      50  
      51    return 0;
      52  }
      53  
      54  #include <support/test-driver.c>