x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
GETPT(3) Linux Programmer's Manual GETPT(3)
NAME
getpt - open the pseudoterminal master (PTM)
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>
int getpt(void);
DESCRIPTION
getpt() opens a pseudoterminal master and returns its file descriptor.
It is equivalent to
open(/dev/ptmx, O_RDWR | O_NOCTTY);
on Linux systems, though the pseudoterminal master is located elsewhere
on some systems that use GNU Libc.
RETURN VALUE
getpt() returns an open file descriptor upon successful completion.
Otherwise, it returns -1 and sets errno to indicate the error.
ERRORS
getpt() can fail with various errors described in open(2).
VERSIONS
getpt() is provided in glibc since version 2.1.
ATTRIBUTES
Multithreading (see pthreads(7))
The getpt() function is thread-safe.
CONFORMING TO
getpt() is glibc-specific; use posix_openpt(3) instead.
SEE ALSO
grantpt(3), posix_openpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7)
COLOPHON
This page is part of release 3.69 of the Linux 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/.
GNU 2014-04-01 GETPT(3)
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