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

   1 /* Test for proper error/errno handling in clone.
   2    Copyright (C) 2006-2024 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 /* BZ #2386 */
  20 #include <errno.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <sched.h>
  25
  26 #ifdef __ia64__
  27 extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
  28                      size_t __child_stack_size, int __flags, void *__arg, ...);
  29 #endif
  30
  31 int child_fn(void *arg)
  32 {
  33   puts ("FAIL: in child_fn(); should not be here");
  34   exit(1);
  35 }
  36
  37 static int
  38 do_test (void)
  39 {
  40   int result;
  41
  42 #ifdef __ia64__
  43   result = __clone2 (child_fn, NULL, 0, 0, NULL, NULL, NULL);
  44 #else
  45   result = clone (child_fn, NULL, 0, NULL);
  46 #endif
  47
  48   if (errno != EINVAL || result != -1)
  49     {
  50       printf ("FAIL: clone()=%d (wanted -1) errno=%d (wanted %d)\n",
  51               result, errno, EINVAL);
  52       return 1;
  53     }
  54
  55   puts ("All OK");
  56   return 0;
  57 }
  58
  59 #define TEST_FUNCTION do_test ()
  60 #include "../test-skeleton.c"