diff --git a/ResponseCode.h b/ResponseCode.h
new file mode 100644
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--- /dev/null
+++ b/ResponseCode.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _RESPONSECODE_H
+#define _RESPONSECODE_H
+
+class ResponseCode {
+public:
+    // 100 series - Requestion action was initiated; expect another reply
+    // before proceeding with a new command.
+    static const int ActionInitiated = 100;
+
+    static const int VolumeListResult = 110;
+
+    // 200 series - Requested action has been successfully completed
+    static const int CommandOkay = 200;
+    static const int ShareAvailabilityResult  = 210;
+
+    // 400 series - The command was accepted but the requested action
+    // did not take place.
+    static const int OperationFailed = 400;
+
+    // 500 series - The command was not accepted and the requested
+    // action did not take place.
+    static const int CommandSyntaxError = 500;
+    static const int CommandParameterError = 501;
+
+    // 600 series - Unsolicited broadcasts
+    static const int UnsolicitedInformational       = 600;
+    static const int VolumeStateChange              = 605;
+    static const int VolumeMountFailedBlank         = 610;
+    static const int VolumeMountFailedDamaged       = 611;
+    static const int VolumeMountFailedNoMedia       = 612;
+
+    static const int ShareAvailabilityChange        = 620;
+
+    static const int VolumeDiskInserted            = 630;
+    static const int VolumeDiskRemoved             = 631;
+    static const int VolumeBadRemoval              = 632;
+};
+#endif