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diff --git a/source3/lib/messages_ctdb.h b/source3/lib/messages_ctdb.h
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+/*
+ * Unix SMB/CIFS implementation.
+ * Samba internal messaging functions
+ * Copyright (C) 2017 by Volker Lendecke
+ *
+ * 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 __MESSAGES_CTDB_H__
+#define __MESSAGES_CTDB_H__
+
+#include "replace.h"
+#include "system/filesys.h"
+#include <tevent.h>
+
+int messaging_ctdb_init(const char *sockname, int timeout, uint64_t unique_id,
+ void (*recv_cb)(struct tevent_context *ev,
+ const uint8_t *msg, size_t msg_len,
+ int *fds, size_t num_fds,
+ void *private_data),
+ void *private_data);
+void messaging_ctdb_destroy(void);
+int messaging_ctdb_send(uint32_t dst_vnn, uint64_t dst_srvid,
+ const struct iovec *iov, int iovlen);
+
+struct messaging_ctdb_fde;
+struct messaging_ctdb_fde *messaging_ctdb_register_tevent_context(
+ TALLOC_CTX *mem_ctx, struct tevent_context *ev);
+bool messaging_ctdb_fde_active(struct messaging_ctdb_fde *fde);
+
+struct ctdbd_connection *messaging_ctdb_connection(void);
+
+#endif