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-rw-r--r--src/librbd/exclusive_lock/Policy.h31
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diff --git a/src/librbd/exclusive_lock/Policy.h b/src/librbd/exclusive_lock/Policy.h
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+++ b/src/librbd/exclusive_lock/Policy.h
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+// -*- 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 {
+
+enum OperationRequestType {
+ OPERATION_REQUEST_TYPE_GENERAL = 0,
+ OPERATION_REQUEST_TYPE_TRASH_SNAP_REMOVE = 1,
+ OPERATION_REQUEST_TYPE_FORCE_PROMOTION = 2,
+};
+
+struct Policy {
+ virtual ~Policy() {
+ }
+
+ virtual bool may_auto_request_lock() = 0;
+ virtual int lock_requested(bool force) = 0;
+
+ virtual bool accept_blocked_request(OperationRequestType) {
+ return false;
+ }
+};
+
+} // namespace exclusive_lock
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_EXCLUSIVE_LOCK_POLICY_H