1 files changed, 108 insertions, 0 deletions
diff --git a/src/messages/MLock.h b/src/messages/MLock.h
new file mode 100644
index 000000000..7eb5ec098
--- /dev/null
+++ b/src/messages/MLock.h
@@ -0,0 +1,108 @@
+// -*- 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_MLOCK_H
+#define CEPH_MLOCK_H
+
+#include "mds/locks.h"
+#include "mds/SimpleLock.h"
+#include "messages/MMDSOp.h"
+
+class MLock final : public MMDSOp {
+private:
+  static constexpr int HEAD_VERSION = 1;
+  static constexpr int COMPAT_VERSION = 1;
+
+  int32_t     action = 0;  // action type
+  mds_rank_t  asker = 0;  // who is initiating this request
+  metareqid_t reqid;  // for remote lock requests
+  
+  __u16      lock_type = 0;  // lock object type
+  MDSCacheObjectInfo object_info;  
+  
+  ceph::buffer::list lockdata;  // and possibly some data
+  
+public:
+  ceph::buffer::list& get_data() { return lockdata; }
+  const ceph::buffer::list& get_data() const { return lockdata; }
+  int get_asker() const { return asker; }
+  int get_action() const { return action; }
+  metareqid_t get_reqid() const { return reqid; }
+  
+  int get_lock_type() const { return lock_type; }
+  const MDSCacheObjectInfo &get_object_info() const { return object_info; }
+  MDSCacheObjectInfo &get_object_info() { return object_info; }
+
+protected:
+  MLock() : MMDSOp{MSG_MDS_LOCK, HEAD_VERSION, COMPAT_VERSION} {}
+  MLock(int ac, mds_rank_t as) :
+    MMDSOp{MSG_MDS_LOCK, HEAD_VERSION, COMPAT_VERSION},
+    action(ac), asker(as),
+    lock_type(0) { }
+  MLock(SimpleLock *lock, int ac, mds_rank_t as) :
+    MMDSOp{MSG_MDS_LOCK, HEAD_VERSION, COMPAT_VERSION},
+    action(ac), asker(as),
+    lock_type(lock->get_type()) {
+    lock->get_parent()->set_object_info(object_info);
+  }
+  MLock(SimpleLock *lock, int ac, mds_rank_t as, ceph::buffer::list& bl) :
+    MMDSOp{MSG_MDS_LOCK, HEAD_VERSION, COMPAT_VERSION},
+    action(ac), asker(as), lock_type(lock->get_type()) {
+    lock->get_parent()->set_object_info(object_info);
+    lockdata = std::move(bl);
+  }
+  ~MLock() final {}
+  
+public:
+  std::string_view get_type_name() const override { return "ILock"; }
+  void print(std::ostream& out) const override {
+    out << "lock(a=" << SimpleLock::get_lock_action_name(action)
+	<< " " << SimpleLock::get_lock_type_name(lock_type)
+	<< " " << object_info
+	<< ")";
+  }
+  
+  void set_reqid(metareqid_t ri) { reqid = ri; }
+  void set_data(const ceph::buffer::list& lockdata) {
+    this->lockdata = lockdata;
+  }
+  
+  void decode_payload() override {
+    using ceph::decode;
+    auto p = payload.cbegin();
+    decode(asker, p);
+    decode(action, p);
+    decode(reqid, p);
+    decode(lock_type, p);
+    decode(object_info, p);
+    decode(lockdata, p);
+  }
+  void encode_payload(uint64_t features) override {
+    using ceph::encode;
+    encode(asker, payload);
+    encode(action, payload);
+    encode(reqid, payload);
+    encode(lock_type, payload);
+    encode(object_info, payload);
+    encode(lockdata, 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