1 files changed, 56 insertions, 0 deletions
diff --git a/source4/lib/util/mutex.c b/source4/lib/util/mutex.c
new file mode 100644
index 0000000000..4d0df68eed
--- /dev/null
+++ b/source4/lib/util/mutex.c
@@ -0,0 +1,56 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Samba mutex/lock functions
+   Copyright (C) Andrew Tridgell 2003
+   Copyright (C) James J Myers 2003
+   
+   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/>.
+*/
+#include "includes.h"
+#include "mutex.h"
+
+/**
+ * @file
+ * @brief Mutex utility functions
+ */
+	 
+/* the registered mutex handlers */
+static struct {
+	const char *name;
+	struct mutex_ops ops;
+} mutex_handlers;
+
+/* read/write lock routines */
+
+
+/**
+  register a set of mutex/rwlock handlers. 
+  Should only be called once in the execution of smbd.
+*/
+_PUBLIC_ bool register_mutex_handlers(const char *name, struct mutex_ops *ops)
+{
+	if (mutex_handlers.name != NULL) {
+		/* it's already registered! */
+		DEBUG(2,("mutex handler '%s' already registered - failed '%s'\n", 
+			 mutex_handlers.name, name));
+		return false;
+	}
+
+	mutex_handlers.name = name;
+	mutex_handlers.ops = *ops;
+
+	DEBUG(2,("mutex handler '%s' registered\n", name));
+	return true;
+}
+