diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index a3eba7f..739ea86 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -2687,6 +2687,11 @@
 	case TIOCNXCL:
 		clear_bit(TTY_EXCLUSIVE, &tty->flags);
 		return 0;
+	case TIOCGEXCL:
+	{
+		int excl = test_bit(TTY_EXCLUSIVE, &tty->flags);
+		return put_user(excl, (int __user *)p);
+	}
 	case TIOCNOTTY:
 		if (current->signal->tty != tty)
 			return -ENOTTY;