1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index a3eba7f359ed..739ea86c1cf1 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -2687,6 +2687,11 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
         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;