UNLOCKPT
UNLOCKPT
Section: Linux Programmer's Manual (3) Updated: 2008-06-14 Local index
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NAME
unlockpt - unlock a pseudo-terminal master/slave pair
SYNOPSIS
#define _XOPEN_SOURCE
#include <stdlib.h >
int unlockpt(int fd );
DESCRIPTION
The
unlockpt ()
function unlocks the slave pseudo-terminal device
(pty) corresponding to the master pty referred to by
fd .
unlockpt ()
should be called before opening the slave side of a pty.
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 pty.
VERSIONS
unlockpt ()
is provided in glibc since version 2.1.
CONFORMING TO
POSIX.1-2001.
SEE ALSO
grantpt posix_openpt ptsname pts feature_test_macros pty
COLOPHON
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A description of the project,
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can be found at
http://www.kernel.org/doc/man-pages/.
Index
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
VERSIONS
CONFORMING TO
SEE ALSO
COLOPHON
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