upload android base code part6

android/system/update_engine/common/error_code.h

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+//
+// Copyright (C) 2013 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 UPDATE_ENGINE_COMMON_ERROR_CODE_H_
+#define UPDATE_ENGINE_COMMON_ERROR_CODE_H_
+
+#include <ostream>  // NOLINT(readability/streams)
+
+namespace chromeos_update_engine {
+
+// Action exit codes.
+enum class ErrorCode : int {
+  kSuccess = 0,
+  kError = 1,
+  kOmahaRequestError = 2,
+  kOmahaResponseHandlerError = 3,
+  kFilesystemCopierError = 4,
+  kPostinstallRunnerError = 5,
+  kPayloadMismatchedType = 6,
+  kInstallDeviceOpenError = 7,
+  kKernelDeviceOpenError = 8,
+  kDownloadTransferError = 9,
+  kPayloadHashMismatchError = 10,
+  kPayloadSizeMismatchError = 11,
+  kDownloadPayloadVerificationError = 12,
+  kDownloadNewPartitionInfoError = 13,
+  kDownloadWriteError = 14,
+  kNewRootfsVerificationError = 15,
+  kNewKernelVerificationError = 16,
+  kSignedDeltaPayloadExpectedError = 17,
+  kDownloadPayloadPubKeyVerificationError = 18,
+  kPostinstallBootedFromFirmwareB = 19,
+  kDownloadStateInitializationError = 20,
+  kDownloadInvalidMetadataMagicString = 21,
+  kDownloadSignatureMissingInManifest = 22,
+  kDownloadManifestParseError = 23,
+  kDownloadMetadataSignatureError = 24,
+  kDownloadMetadataSignatureVerificationError = 25,
+  kDownloadMetadataSignatureMismatch = 26,
+  kDownloadOperationHashVerificationError = 27,
+  kDownloadOperationExecutionError = 28,
+  kDownloadOperationHashMismatch = 29,
+  kOmahaRequestEmptyResponseError = 30,
+  kOmahaRequestXMLParseError = 31,
+  kDownloadInvalidMetadataSize = 32,
+  kDownloadInvalidMetadataSignature = 33,
+  kOmahaResponseInvalid = 34,
+  kOmahaUpdateIgnoredPerPolicy = 35,
+  kOmahaUpdateDeferredPerPolicy = 36,
+  kOmahaErrorInHTTPResponse = 37,
+  kDownloadOperationHashMissingError = 38,
+  kDownloadMetadataSignatureMissingError = 39,
+  kOmahaUpdateDeferredForBackoff = 40,
+  kPostinstallPowerwashError = 41,
+  kUpdateCanceledByChannelChange = 42,
+  kPostinstallFirmwareRONotUpdatable = 43,
+  kUnsupportedMajorPayloadVersion = 44,
+  kUnsupportedMinorPayloadVersion = 45,
+  kOmahaRequestXMLHasEntityDecl = 46,
+  kFilesystemVerifierError = 47,
+  kUserCanceled = 48,
+  kNonCriticalUpdateInOOBE = 49,
+  // kOmahaUpdateIgnoredOverCellular = 50,
+  kPayloadTimestampError = 51,
+
+  // VERY IMPORTANT! When adding new error codes:
+  //
+  // 1) Update tools/metrics/histograms/histograms.xml in Chrome.
+  //
+  // 2) Update the assorted switch statements in update_engine which won't
+  //    build until this case is added.
+
+  // Any code above this is sent to both Omaha and UMA as-is, except
+  // kOmahaErrorInHTTPResponse (see error code 2000 for more details).
+  // Codes/flags below this line is sent only to Omaha and not to UMA.
+
+  // kUmaReportedMax is not an error code per se, it's just the count
+  // of the number of enums above.  Add any new errors above this line if you
+  // want them to show up on UMA. Stuff below this line will not be sent to UMA
+  // but is used for other errors that are sent to Omaha. We don't assign any
+  // particular value for this enum so that it's just one more than the last
+  // one above and thus always represents the correct count of UMA metrics
+  // buckets, even when new enums are added above this line in future. See
+  // metrics::ReportUpdateAttemptMetrics() on how this enum is used.
+  kUmaReportedMax,
+
+  // use the 2xxx range to encode HTTP errors. These errors are available in
+  // Dremel with the individual granularity. But for UMA purposes, all these
+  // errors are aggregated into one: kOmahaErrorInHTTPResponse.
+  kOmahaRequestHTTPResponseBase = 2000,  // + HTTP response code
+
+  // TODO(jaysri): Move out all the bit masks into separate constants
+  // outside the enum as part of fixing bug 34369.
+  // Bit flags. Remember to update the mask below for new bits.
+
+  // Set if boot mode not normal.
+  // TODO(garnold) This is very debatable value to use, knowing that the
+  // underlying type is a signed int (often, 32-bit). However, at this point
+  // there are parts of the ecosystem that expect this to be a negative value,
+  // so we preserve this semantics. This should be reconsidered if/when we
+  // modify the implementation of ErrorCode into a properly encapsulated class.
+  kDevModeFlag = 1 << 31,
+
+  // Set if resuming an interruped update.
+  kResumedFlag = 1 << 30,
+
+  // Set if using a dev/test image as opposed to an MP-signed image.
+  kTestImageFlag = 1 << 29,
+
+  // Set if using devserver or Omaha sandbox (using crosh autest).
+  kTestOmahaUrlFlag = 1 << 28,
+
+  // Mask that indicates bit positions that are used to indicate special flags
+  // that are embedded in the error code to provide additional context about
+  // the system in which the error was encountered.
+  kSpecialFlags =
+      (kDevModeFlag | kResumedFlag | kTestImageFlag | kTestOmahaUrlFlag)
+};
+
+inline std::ostream& operator<<(std::ostream& os, ErrorCode val) {
+  return os << static_cast<int>(val);
+}
+
+}  // namespace chromeos_update_engine
+
+#endif  // UPDATE_ENGINE_COMMON_ERROR_CODE_H_