.\" Copyright Peter Benie <pjb1008@cam.ac.uk>
.\" University of Cambridge Computing Service
.\" Tue 19 May 1998
.TH UNLOCKPT 2 "19 May 1998" "Linux 2.0"
.SH NAME
unlockpt \- grant access to the pty slave
.SH SYNOPSIS
.nf
.B #include <ptmx_fake.h>
.B cc [...] -lptmx_fake
.sp
.BI "int unlockpt(int " fd );
.fi
.SH DESCRIPTION
.B unlockpt
enables the pty slave to be used. This implementation does nothing
other than verify that it was called with sane arguments.
fd should be a pty master or the fake pty multiplexor.
.SH RETURN VALUE
.B unlockpt
returns zero on success, or \-1 if an error occurred. An error will
occur if fd is not a pty master or if the slave device cannot be
found.
.SH "SEE ALSO"
.BR grantpt "(3), " pty_chmod (8)
.SH AUTHOR
Peter Benie <pjb1008@cam.ac.uk>