4 files changed, 69 insertions, 0 deletions
diff --git a/source3/include/includes.h b/source3/include/includes.h
index dc0cbe182f..192b9a0bdb 100644
--- a/source3/include/includes.h
+++ b/source3/include/includes.h
@@ -687,6 +687,7 @@ struct ntlmssp_state;
 #include "ctdbd_conn.h"
 #include "../lib/util/talloc_stack.h"
 #include "memcache.h"
+#include "serverid.h"
 #include "async_smb.h"
 #include "../lib/async_req/async_sock.h"
 #include "talloc_dict.h"
diff --git a/source3/include/messages.h b/source3/include/messages.h
index 2e42fc6554..6063d358ea 100644
--- a/source3/include/messages.h
+++ b/source3/include/messages.h
@@ -72,6 +72,7 @@ struct server_id {
 #ifdef CLUSTER_SUPPORT
 	uint32 vnn;
 #endif
+	uint64_t unique_id;
 };
 
 #ifdef CLUSTER_SUPPORT
diff --git a/source3/include/proto.h b/source3/include/proto.h
index 7c1f8fa92c..6ecf0a5542 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -1205,6 +1205,7 @@ uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options);
 pid_t procid_to_pid(const struct server_id *proc);
 void set_my_vnn(uint32 vnn);
 uint32 get_my_vnn(void);
+void set_my_unique_id(uint64_t unique_id);
 struct server_id pid_to_procid(pid_t pid);
 struct server_id procid_self(void);
 bool procid_equal(const struct server_id *p1, const struct server_id *p2);
diff --git a/source3/include/serverid.h b/source3/include/serverid.h
new file mode 100644
index 0000000000..9ef778cdc0
--- /dev/null
+++ b/source3/include/serverid.h
@@ -0,0 +1,66 @@
+/*
+   Unix SMB/CIFS implementation.
+   Implementation of a reliable server_exists()
+   Copyright (C) Volker Lendecke 2010
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __SERVERID_H__
+#define __SERVERID_H__
+
+#include "includes.h"
+
+/*
+ * Register a server with its unique id
+ */
+bool serverid_register(const struct server_id *id, uint32_t msg_flags);
+
+/*
+ * Register ourselves with a unique id
+ */
+bool serverid_register_self(uint32_t msg_flags);
+
+/*
+ * De-register a server with its unique id
+ */
+bool serverid_deregister(const struct server_id *id);
+
+/*
+ * De-register ourself
+ */
+bool serverid_deregister_self(void);
+
+/*
+ * Check existence of a server id
+ */
+bool serverid_exists(const struct server_id *id);
+
+/*
+ * Walk the list of server_ids registered
+ */
+bool serverid_traverse(int (*fn)(struct db_record *rec,
+				 const struct server_id *id,
+				 uint32_t msg_flags,
+				 void *private_data),
+		       void *private_data);
+
+/*
+ * Walk the list of server_ids registered read-only
+ */
+bool serverid_traverse_read(int (*fn)(const struct server_id *id,
+				      uint32_t msg_flags,
+				      void *private_data),
+			    void *private_data);
+#endif