diff --git a/error_code.h b/error_code.h
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+++ b/error_code.h
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+/*
+ * Copyright (C) 2016 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 _ERROR_CODE_H_
+#define _ERROR_CODE_H_
+
+enum ErrorCode {
+  kNoError = -1,
+  kLowBattery = 20,
+  kZipVerificationFailure,
+  kZipOpenFailure,
+  kBootreasonInBlacklist,
+  kPackageCompatibilityFailure,
+  kScriptExecutionFailure,
+  kMapFileFailure,
+  kForkUpdateBinaryFailure,
+  kUpdateBinaryCommandFailure,
+};
+
+enum CauseCode {
+  kNoCause = -1,
+  kArgsParsingFailure = 100,
+  kStashCreationFailure,
+  kFileOpenFailure,
+  kLseekFailure,
+  kFreadFailure,
+  kFwriteFailure,
+  kFsyncFailure,
+  kLibfecFailure,
+  kFileGetPropFailure,
+  kFileRenameFailure,
+  kSymlinkFailure,
+  kSetMetadataFailure,
+  kTune2FsFailure,
+  kRebootFailure,
+  kPackageExtractFileFailure,
+  kPatchApplicationFailure,
+  kVendorFailure = 200
+};
+
+enum UncryptErrorCode {
+  kUncryptNoError = -1,
+  kUncryptErrorPlaceholder = 50,
+  kUncryptTimeoutError = 100,
+  kUncryptFileRemoveError,
+  kUncryptFileOpenError,
+  kUncryptSocketOpenError,
+  kUncryptSocketWriteError,
+  kUncryptSocketListenError,
+  kUncryptSocketAcceptError,
+  kUncryptFstabReadError,
+  kUncryptFileStatError,
+  kUncryptBlockOpenError,
+  kUncryptIoctlError,
+  kUncryptReadError,
+  kUncryptWriteError,
+  kUncryptFileSyncError,
+  kUncryptFileCloseError,
+  kUncryptFileRenameError,
+  kUncryptPackageMissingError,
+  kUncryptRealpathFindError,
+  kUncryptBlockDeviceFindError,
+};
+
+#endif // _ERROR_CODE_H_