This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
80 lines
2.6 KiB
Groff
80 lines
2.6 KiB
Groff
.\" $NetBSD: posix_openpt.3,v 1.4 2008/04/30 13:10:51 martin Exp $
|
|
.\"
|
|
.\" Copyright (c) 2004 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Christos Zoulas.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.Dd May 25, 2004
|
|
.Dt POSIX_OPENPT 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm posix_openpt
|
|
.Nd open a pseudo-terminal device
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In stdlib.h
|
|
.In fcntl.h
|
|
.Ft int
|
|
.Fn posix_openpt "int oflag"
|
|
.Sh DESCRIPTION
|
|
.Fn posix_openpt
|
|
Searches for an unused master pseudo-terminal device, opens it, and returns
|
|
a file descriptor associated the now used pseudo-terminal device.
|
|
The
|
|
.Fa oflag
|
|
argument has the same meaning as in the
|
|
.Xr open 2
|
|
call.
|
|
.Sh RETURN VALUES
|
|
If successful,
|
|
.Fn posix_openpt
|
|
returns a non-negative integer, which corresponds to a file descriptor
|
|
pointing to the master pseudo-terminal device.
|
|
Otherwise, a value of \-1 is returned and
|
|
.Va errno
|
|
is set to indicate the error.
|
|
.Sh SEE ALSO
|
|
.Xr ioctl 2 ,
|
|
.Xr open 2 ,
|
|
.Xr grantpt 3 ,
|
|
.Xr ptsname 3 ,
|
|
.Xr unlockpt 3
|
|
.Sh RATIONALE
|
|
The standards committee did not want to directly expose the cloning device,
|
|
thus decided to wrap the functionality in this function.
|
|
The equivalent code would be:
|
|
.Bd -literal
|
|
int
|
|
posix_openpt(int oflag) {
|
|
return open("/dev/ptmx", oflag);
|
|
}
|
|
.Ed
|
|
.Sh STANDARDS
|
|
The
|
|
.Fn posix_openpt
|
|
function conforms to
|
|
.St -p1003.1-2001 .
|