io/pipe.c

   1 /* Copyright (C) 1991-2019 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <unistd.h>
  20 #include <stddef.h>
  21
  22 /* Create a one-way communication channel (__pipe).
  23    If successful, two file descriptors are stored in PIPEDES;
  24    bytes written on PIPEDES[1] can be read from PIPEDES[0].
  25    Returns 0 if successful, -1 if not.  */
  26 int
  27 __pipe (int __pipedes[2])
  28 {
  29   if (__pipedes == NULL)
  30     {
  31       __set_errno (EINVAL);
  32       return -1;
  33     }
  34
  35   __set_errno (ENOSYS);
  36   return -1;
  37 }
  38 libc_hidden_def (__pipe)
  39 stub_warning (pipe)
  40
  41 weak_alias (__pipe, pipe)