diff --git a/exec/hdb.c b/exec/hdb.c
index e69de29b..e38f062b 100644
--- a/exec/hdb.c
+++ b/exec/hdb.c
@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2002-2004 MontaVista Software, Inc.
+ *
+ * All rights reserved.
+ *
+ * Author: Steven Dake (sdake@mvista.com)
+ *
+ * This software licensed under BSD license, the text of which follows:
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * - Neither the name of the MontaVista Software, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "hdb.h"
+
+enum SA_HANDLE_STATE {
+	SA_HANDLE_STATE_EMPTY,
+	SA_HANDLE_STATE_PENDINGREMOVAL,
+	SA_HANDLE_STATE_ACTIVE
+};
+
+struct saHandle {
+	int state;
+	void *instance;
+	int refCount;
+};
+
+SaErrorT
+saHandleCreate (
+	struct saHandleDatabase *handleDatabase,
+	int instanceSize,
+	unsigned int *handleOut)
+{
+	int handle;
+	void *newHandles;
+	int found = 0;
+	void *instance;
+
+	for (handle = 0; handle < handleDatabase->handleCount; handle++) {
+		if (handleDatabase->handles[handle].state == SA_HANDLE_STATE_EMPTY) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (found == 0) {
+		handleDatabase->handleCount += 1;
+		newHandles = (struct saHandle *)realloc (handleDatabase->handles,
+			sizeof (struct saHandle) * handleDatabase->handleCount);
+		if (newHandles == 0) {
+			return (SA_ERR_NO_MEMORY);
+		}
+		handleDatabase->handles = newHandles;
+	}
+
+	instance = malloc (instanceSize);
+	if (instance == 0) {
+		return (SA_ERR_NO_MEMORY);
+	}
+	memset (instance, 0, instanceSize);
+
+	handleDatabase->handles[handle].state = SA_HANDLE_STATE_ACTIVE;
+
+	handleDatabase->handles[handle].instance = instance;
+
+	handleDatabase->handles[handle].refCount = 1;
+
+	*handleOut = handle;
+
+	return (SA_OK);
+}
+
+
+SaErrorT
+saHandleDestroy (
+	struct saHandleDatabase *handleDatabase,
+	unsigned int handle)
+{
+	handleDatabase->handles[handle].state = SA_HANDLE_STATE_PENDINGREMOVAL;
+	saHandleInstancePut (handleDatabase, handle);
+
+	return (SA_OK);
+}
+
+
+SaErrorT
+saHandleInstanceGet (
+	struct saHandleDatabase *handleDatabase,
+	unsigned int handle,
+	void **instance)
+{ 
+
+	if (handle > handleDatabase->handleCount) {
+		return (SA_ERR_BAD_HANDLE);
+	}
+	if (handleDatabase->handles[handle].state != SA_HANDLE_STATE_ACTIVE) {
+		return (SA_ERR_BAD_HANDLE);
+	}
+
+	*instance = handleDatabase->handles[handle].instance;
+
+	handleDatabase->handles[handle].refCount += 1;
+
+	return (SA_OK);
+}
+
+
+SaErrorT
+saHandleInstancePut (
+	struct saHandleDatabase *handleDatabase,
+	unsigned int handle)
+{
+	void *instance;
+
+	handleDatabase->handles[handle].refCount -= 1;
+	assert (handleDatabase->handles[handle].refCount >= 0);
+
+	if (handleDatabase->handles[handle].refCount == 0) {
+		instance = (handleDatabase->handles[handle].instance);
+		if (handleDatabase->handleInstanceDestructor) {
+			handleDatabase->handleInstanceDestructor (instance);
+		}
+		free (instance);
+		memset (&handleDatabase->handles[handle], 0, sizeof (struct saHandle));
+	}
+
+	return (SA_OK);
+}
diff --git a/exec/hdb.h b/exec/hdb.h
index e69de29b..19f19716 100644
--- a/exec/hdb.h
+++ b/exec/hdb.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2002-2004 MontaVista Software, Inc.
+ *
+ * All rights reserved.
+ *
+ * Author: Steven Dake (sdake@mvista.com)
+ *
+ * This software licensed under BSD license, the text of which follows:
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * - Neither the name of the MontaVista Software, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef HDB_H_DEFINED
+#define HDB_H_DEFINED
+
+#include "../include/ais_types.h"
+
+struct saHandleDatabase {
+	unsigned int handleCount;
+	struct saHandle *handles;
+	pthread_mutex_t mutex;
+	void (*handleInstanceDestructor) (void *);
+};
+
+extern SaErrorT
+saHandleCreate (
+	struct saHandleDatabase *handleDatabase,
+	int instanceSize,
+	unsigned int *handleOut);
+
+extern SaErrorT
+saHandleDestroy (
+	struct saHandleDatabase *handleDatabase,
+	unsigned int handle);
+
+extern SaErrorT
+saHandleInstanceGet (
+	struct saHandleDatabase *handleDatabase,
+	unsigned int handle,
+	void **instance);
+
+extern SaErrorT
+saHandleInstancePut (
+	struct saHandleDatabase *handleDatabase,
+	unsigned int handle);
+
+#endif /* HDB_H_DEFINED */