sysdeps/unix/sysv/linux/generic/pipe.c

   1 /* Copyright (C) 2011-2021 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    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <unistd.h>
  19 #include <sysdep.h>
  20
  21 /* Create a one-way communication channel (__pipe).
  22    If successful, two file descriptors are stored in PIPEDES;
  23    bytes written on PIPEDES[1] can be read from PIPEDES[0].
  24    Returns 0 if successful, -1 if not.  */
  25 int
  26 __pipe (int __pipedes[2])
  27 {
  28   return INLINE_SYSCALL (pipe2, 2, __pipedes, 0);
  29 }
  30 libc_hidden_def (__pipe)
  31 weak_alias (__pipe, pipe)