English pages are provided only to compare translations to original pages, better looking pages can be browsed at the Linux man-pages official site.

GETPT

Linux Programmer's Manual (3)
2014-04-01
 

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 3.66 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/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
VERSIONS
ATTRIBUTES
Multithreading (see pthreads(7))
CONFORMING TO
SEE ALSO
COLOPHON

This document was created by man2html, using the manual pages.
Time: 21:43:00 GMT, July 12, 2014