posix/_Fork.c

   1 /* _Fork implementation.  Generic version.
   2    Copyright (C) 2021-2022 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 #include <errno.h>
  20 #include <unistd.h>
  21
  22 /* Clone the calling process, creating an exact copy.  Return -1 for errors,
  23    0 to the new process, and the process ID of the new process to the
  24    old process.
  25    Different than fork, this functions is marked as async-signal-safe by
  26    POSIX (by Austin Group issue 62).  */
  27 pid_t
  28 _Fork (void)
  29 {
  30   __set_errno (ENOSYS);
  31   return -1;
  32 }
  33 libc_hidden_def (_Fork)
  34 stub_warning (_Fork)