Content-type: text/html; charset=UTF-8
Man page of UNLOCKPT
UNLOCKPT
Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
Index
Return to Main Contents
NAME
unlockpt - unlock a pseudoterminal master/slave pair
SYNOPSIS
#define _XOPEN_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>
int unlockpt(int fd);
DESCRIPTION
The
unlockpt()
function unlocks the slave pseudoterminal device
corresponding to the master pseudoterminal referred to by
fd.
unlockpt()
should be called before opening the slave side of a pseudoterminal.
RETURN VALUE
When successful,
unlockpt()
returns 0.
Otherwise, it returns -1 and sets
errno
appropriately.
ERRORS
- EBADF
-
The
fd
argument is not a file descriptor open for writing.
- EINVAL
-
The
fd
argument is not associated with a master pseudoterminal.
VERSIONS
unlockpt()
is provided in glibc since version 2.1.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
unlockpt()
| Thread safety | MT-Safe
|
CONFORMING TO
POSIX.1-2001, POSIX.1-2008.
SEE ALSO
grantpt(3),
posix_openpt(3),
ptsname(3),
pts(4),
pty(7)
COLOPHON
This page is part of release 4.09 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
https://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- VERSIONS
-
- ATTRIBUTES
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-
This document was created by
man2html,
using the manual pages.
Time: 14:28:38 GMT, February 25, 2017