===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/sshpty.c,v
retrieving revision 1.30
retrieving revision 1.31
diff -u -r1.30 -r1.31
--- src/usr.bin/ssh/sshpty.c	2015/07/30 23:09:15	1.30
+++ src/usr.bin/ssh/sshpty.c	2016/11/29 03:54:50	1.31
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshpty.c,v 1.30 2015/07/30 23:09:15 djm Exp $ */
+/* $OpenBSD: sshpty.c,v 1.31 2016/11/29 03:54:50 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -177,5 +177,17 @@
 				fatal("chmod(%.100s, 0%o) failed: %.100s",
 				    tty, (u_int)mode, strerror(errno));
 		}
+	}
+}
+
+/* Disconnect from the controlling tty. */
+void
+disconnect_controlling_tty(void)
+{
+	int fd;
+
+	if ((fd = open(_PATH_TTY, O_RDWR | O_NOCTTY)) >= 0) {
+		(void) ioctl(fd, TIOCNOTTY, NULL);
+		close(fd);
 	}
 }