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diff --git a/src/messages/MDentryLink.h b/src/messages/MDentryLink.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+
+#ifndef CEPH_MDENTRYLINK_H
+#define CEPH_MDENTRYLINK_H
+
+#include <string_view>
+
+#include "messages/MMDSOp.h"
+
+class MDentryLink final : public MMDSOp {
+private:
+ static constexpr int HEAD_VERSION = 1;
+ static constexpr int COMPAT_VERSION = 1;
+
+ dirfrag_t subtree;
+ dirfrag_t dirfrag;
+ std::string dn;
+ bool is_primary = false;
+
+ public:
+ dirfrag_t get_subtree() const { return subtree; }
+ dirfrag_t get_dirfrag() const { return dirfrag; }
+ const std::string& get_dn() const { return dn; }
+ bool get_is_primary() const { return is_primary; }
+
+ ceph::buffer::list bl;
+
+protected:
+ MDentryLink() :
+ MMDSOp(MSG_MDS_DENTRYLINK, HEAD_VERSION, COMPAT_VERSION) { }
+ MDentryLink(dirfrag_t r, dirfrag_t df, std::string_view n, bool p) :
+ MMDSOp(MSG_MDS_DENTRYLINK, HEAD_VERSION, COMPAT_VERSION),
+ subtree(r),
+ dirfrag(df),
+ dn(n),
+ is_primary(p) {}
+ ~MDentryLink() final {}
+
+public:
+ std::string_view get_type_name() const override { return "dentry_link";}
+ void print(std::ostream& o) const override {
+ o << "dentry_link(" << dirfrag << " " << dn << ")";
+ }
+
+ void decode_payload() override {
+ using ceph::decode;
+ auto p = payload.cbegin();
+ decode(subtree, p);
+ decode(dirfrag, p);
+ decode(dn, p);
+ decode(is_primary, p);
+ decode(bl, p);
+ }
+ void encode_payload(uint64_t features) override {
+ using ceph::encode;
+ encode(subtree, payload);
+ encode(dirfrag, payload);
+ encode(dn, payload);
+ encode(is_primary, payload);
+ encode(bl, payload);
+ }
+private:
+ template<class T, typename... Args>
+ friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
+};
+
+#endif