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.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Modified by Michael Haardt <michael@moria.de>
.\" Modified Fri Jul 23 23:25:42 1993 by Rik Faith <faith@cs.unc.edu>
.\" Modified Tue Oct 22 17:23:51 1996 by Eric S. Raymond <esr@thyrsus.com>
.\"
.TH PIPE 2 "23 July 1993" "Linux 0.99.11" "Linux Programmer's Manual"
.SH NAME
pipe \- create pipe
.SH SYNOPSIS
.B #include <unistd.h>
.sp
.BI "int pipe(int " filedes "[2]);
.SH DESCRIPTION
.B pipe
creates a pair of file descriptors, pointing to a pipe inode, and places
them in the array pointed to by
.IR filedes .
.I filedes[0]
is for reading,
.I filedes[1]
is for writing.
.SH "RETURN VALUE"
On success, zero is returned. On error, \-1 is returned, and
.I errno
is set appropriately.
.SH ERRORS
.TP
.B EMFILE
Too many file descriptors are in use by the process.
.TP
.B ENFILE
The system file table is full.
.TP
.B EFAULT
.I filedes
is not valid.
.SH "CONFORMING TO"
SVr4, SVID, AT&T, POSIX, X/OPEN, BSD 4.3
.SH "SEE ALSO"
.BR read (2),
.BR write (2),
.BR fork (2),
.BR socketpair (2)
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