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document TIOCPKT_IOCTL per PR#4533

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fair 1998-03-21 03:14:30 +00:00
parent 09cde3ae17
commit 51271ff28f
1 changed files with 19 additions and 1 deletions
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20
share/man/man4/pty.4
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@ -1,4 +1,4 @@
.\" $NetBSD: pty.4,v 1.3 1994/11/30 16:22:30 jtc Exp $
.\" $NetBSD: pty.4,v 1.4 1998/03/21 03:14:30 fair Exp $
.\"
.\" Copyright (c) 1983, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
@ -139,6 +139,24 @@ to implement a remote-echoed, locally
flow-controlled
remote login with proper back-flushing of output; it can be
used by other similar programs.
.It Dv TIOCPKT_IOCTL
When this bit is set, the slave has changed the
.Xr termios 4
structure (TTY state), and the remainder of the data read from
the master side of the
.Nm
is a copy of the new
.Xr termios 4
structure.
.Pp
This is used by
.Xr telnetd 8
to implement TELNET "line mode" - it allows the
.Xr telnetd 8
to detect
.Xr tty 4
state changes by the slave, and negotiate the appropriate TELNET
protocol equivalents with the remote peer.
.El
.It Dv TIOCUCNTL
Enable/disable a mode that allows a small number of simple user