sysdeps/unix/sysv/linux/tst-personality.c

   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
  23 static int
  24 do_test (void)
  25 {
  26   int rc = 0;
  27   unsigned int test_persona = -EINVAL;
  28   unsigned int saved_persona;
  29
  30   errno = 0xdefaced;
  31   saved_persona = personality (0xffffffff);
  32
  33   if (personality (test_persona) != saved_persona
  34       || personality (0xffffffff) == -1
  35       || personality (PER_LINUX) == -1
  36       || personality (0xffffffff) != PER_LINUX
  37       || 0xdefaced != errno)
  38     rc = 1;
  39
  40   (void) personality (saved_persona);
  41   return rc;
  42 }
  43
  44 #define TEST_FUNCTION do_test ()
  45 #include "../test-skeleton.c"