keystore: add multi-user support.

Change-Id: I60268261110934a1d60efa341ff530f94415724f
diff --git a/cmds/keystore/keystore.h b/cmds/keystore/keystore.h
new file mode 100644
index 0000000..5ef51e9
--- /dev/null
+++ b/cmds/keystore/keystore.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2009 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 __KEYSTORE_H__
+#define __KEYSTORE_H__
+
+enum response_code {
+    NO_ERROR          =  1,
+    LOCKED            =  2,
+    UNINITIALIZED     =  3,
+    SYSTEM_ERROR      =  4,
+    PROTOCOL_ERROR    =  5,
+    PERMISSION_DENIED =  6,
+    KEY_NOT_FOUND     =  7,
+    VALUE_CORRUPTED   =  8,
+    UNDEFINED_ACTION  =  9,
+    WRONG_PASSWORD    = 10,
+};
+
+#endif