|  | /* Copyright (C) 1991, 1995, 1996, 2002, 2008 Free Software Foundation, Inc. | 
|  | This file is part of the GNU C Library. | 
|  |  | 
|  | The GNU C Library is free software; you can redistribute it and/or | 
|  | modify it under the terms of the GNU Lesser General Public | 
|  | License as published by the Free Software Foundation; either | 
|  | version 2.1 of the License, or (at your option) any later version. | 
|  |  | 
|  | The GNU C Library is distributed in the hope that it will be useful, | 
|  | but WITHOUT ANY WARRANTY; without even the implied warranty of | 
|  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
|  | Lesser General Public License for more details. | 
|  |  | 
|  | You should have received a copy of the GNU Lesser General Public | 
|  | License along with the GNU C Library; if not, write to the Free | 
|  | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | 
|  | 02111-1307 USA.  */ | 
|  |  | 
|  | #include <errno.h> | 
|  | #include <unistd.h> | 
|  | #include <stddef.h> | 
|  |  | 
|  | /* Create a one-way communication channel (__pipe).  If successful, | 
|  | two file descriptors are stored in PIPEDES; bytes written on | 
|  | PIPEDES[1] can be read from PIPEDES[0]. */ | 
|  | int __pipe(int __pipedes[2]) | 
|  | { | 
|  | if (__pipedes == NULL) { | 
|  | __set_errno (EINVAL); | 
|  | return -1; | 
|  | } | 
|  | return __pipe2(__pipedes, 0); | 
|  | } | 
|  | libc_hidden_def (__pipe) | 
|  | weak_alias (__pipe, pipe) |