From e757b91154d4a52ecbb598ea8adb3735b573784e Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Fri, 1 May 2015 22:51:19 +0200
Subject: [PATCH] tty_ioctl.4: Document TIOCGPTLCK

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man4/tty_ioctl.4 | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/man4/tty_ioctl.4 b/man4/tty_ioctl.4
index ee279f818..850edd01f 100644
--- a/man4/tty_ioctl.4
+++ b/man4/tty_ioctl.4
@@ -370,6 +370,12 @@ is nonzero) or remove (if
 is zero) the pseudoterminal slave device.
 (See also
 .BR unlockpt (3).)
+.TP
+.BI "TIOCGPTLCK	int *" argp
+Place the current lock state of the pseudoterminal slave device
+in the location pointed to by
+.IR argp
+(since Linux 3.8).
 .PP
 The BSD ioctls
 .BR TIOCSTOP ,