1 files changed, 17 insertions, 0 deletions

diff --git a/kernel/audit.c b/kernel/audit.c
index 22bb4f24f071..8d528f9930da 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1883,6 +1883,23 @@ out_null:
         audit_log_format(ab, " exe=(null)");
 }
 
+struct tty_struct *audit_get_tty(struct task_struct *tsk)
+{
+        struct tty_struct *tty = NULL;
+        unsigned long flags;
+
+        spin_lock_irqsave(&tsk->sighand->siglock, flags);
+        if (tsk->signal)
+                tty = tty_kref_get(tsk->signal->tty);
+        spin_unlock_irqrestore(&tsk->sighand->siglock, flags);
+        return tty;
+}
+
+void audit_put_tty(struct tty_struct *tty)
+{
+        tty_kref_put(tty);
+}
+
 void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk)
 {
         const struct cred *cred;