+++ /dev/null
-.\" Copyright (C) 2004 Michael Kerrisk
-.\"
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-.\" preserved on all copies.
-.\"
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-.\" 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-.\" manual page may be incorrect or out-of-date.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
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-.\" %%%LICENSE_END
-.\"
-.TH POSIX_OPENPT 3 2014-06-03 "" "Linux Programmer's Manual"
-.SH NAME
-posix_openpt \- open a pseudoterminal device
-.SH SYNOPSIS
-.nf
-.B #include <stdlib.h>
-.B #include <fcntl.h>
-.sp
-.BI "int posix_openpt(int " flags ");"
-.fi
-.sp
-.in -4n
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.in
-.sp
-.ad l
-.BR posix_openpt ():
-_XOPEN_SOURCE\ >=\ 600
-.ad b
-.SH DESCRIPTION
-The
-.BR posix_openpt ()
-function opens an unused pseudoterminal master device, returning a
-file descriptor that can be used to refer to that device.
-
-The
-.I flags
-argument is a bit mask that ORs together zero or more of
-the following flags:
-.TP
-.B O_RDWR
-Open the device for both reading and writing.
-It is usual to specify this flag.
-.TP
-.B O_NOCTTY
-Do not make this device the controlling terminal for the process.
-.SH RETURN VALUE
-On success,
-.BR posix_openpt ()
-returns a nonnegative file descriptor which is the lowest
-numbered unused descriptor.
-On failure, \-1 is returned, and
-.I errno
-is set to indicate the error.
-.SH ERRORS
-See
-.BR open (2).
-.SH VERSIONS
-Glibc support for
-.BR posix_openpt ()
-has been provided since version 2.2.1.
-.SH ATTRIBUTES
-.SS Multithreading (see pthreads(7))
-The
-.BR posix_openpt ()
-function is thread-safe.
-.SH CONFORMING TO
-.BR posix_openpt ()
-is part of the UNIX 98 pseudoterminal support (see
-.BR pts (4)).
-This function is specified in POSIX.1-2001.
-.SH NOTES
-The
-.BR posix_openpt ()
-function is a recent invention in POSIX.
-Some UNIX implementations that support System V
-(aka UNIX 98) pseudoterminals don't have this function, but it
-is easy to implement:
-.in +4n
-.nf
-
-int
-posix_openpt(int flags)
-{
- return open("/dev/ptmx", flags);
-}
-.fi
-.in
-.PP
-Calling
-.BR posix_openpt ()
-creates a pathname for the corresponding pseudoterminal slave device.
-The pathname of the slave device can be obtained using
-.BR ptsname (3).
-The slave device pathname exists only as long as the master device is open.
-.SH SEE ALSO
-.BR open (2),
-.BR getpt (3),
-.BR grantpt (3),
-.BR ptsname (3),
-.BR unlockpt (3),
-.BR pts (4),
-.BR pty (7)
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.
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