--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_EXCLUSIVE_LOCK_POLICY_H
+#define CEPH_LIBRBD_EXCLUSIVE_LOCK_POLICY_H
+
+namespace librbd {
+namespace exclusive_lock {
+
+struct Policy {
+ virtual ~Policy() {
+ }
+
+ virtual bool may_auto_request_lock() = 0;
+ virtual int lock_requested(bool force) = 0;
+};
+
+} // namespace exclusive_lock
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_EXCLUSIVE_LOCK_POLICY_H