1 files changed, 75 insertions, 0 deletions
diff --git a/src/messages/MExportDirDiscover.h b/src/messages/MExportDirDiscover.h
new file mode 100644
index 000000000..c191e1011
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+++ b/src/messages/MExportDirDiscover.h
@@ -0,0 +1,75 @@
+// -*- 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_MEXPORTDIRDISCOVER_H
+#define CEPH_MEXPORTDIRDISCOVER_H
+
+#include "include/types.h"
+#include "messages/MMDSOp.h"
+
+class MExportDirDiscover final : public MMDSOp {
+private:
+  static constexpr int HEAD_VERSION = 1;
+  static constexpr int COMPAT_VERSION = 1;
+  mds_rank_t from = -1;
+  dirfrag_t dirfrag;
+  filepath path;
+
+ public:
+  mds_rank_t get_source_mds() const { return from; }
+  inodeno_t get_ino() const { return dirfrag.ino; }
+  dirfrag_t get_dirfrag() const { return dirfrag; }
+  const filepath& get_path() const { return path; }
+
+  bool started;
+
+protected:
+  MExportDirDiscover() :     
+    MMDSOp{MSG_MDS_EXPORTDIRDISCOVER, HEAD_VERSION, COMPAT_VERSION},
+    started(false) { }
+  MExportDirDiscover(dirfrag_t df, filepath& p, mds_rank_t f, uint64_t tid) :
+    MMDSOp{MSG_MDS_EXPORTDIRDISCOVER, HEAD_VERSION, COMPAT_VERSION},
+    from(f), dirfrag(df), path(p), started(false) {
+    set_tid(tid);
+  }
+  ~MExportDirDiscover() final {}
+
+public:
+  std::string_view get_type_name() const override { return "ExDis"; }
+  void print(std::ostream& o) const override {
+    o << "export_discover(" << dirfrag << " " << path << ")";
+  }
+
+  void decode_payload() override {
+    using ceph::decode;
+    auto p = payload.cbegin();
+    decode(from, p);
+    decode(dirfrag, p);
+    decode(path, p);
+  }
+
+  void encode_payload(uint64_t features) override {
+    using ceph::encode;
+    encode(from, payload);
+    encode(dirfrag, payload);
+    encode(path, payload);
+  }
+private:
+  template<class T, typename... Args>
+  friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
+  template<class T, typename... Args>
+  friend MURef<T> crimson::make_message(Args&&... args);
+};
+
+#endif