| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chromecast/base/error_codes.h" |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| |
| #include <string> |
| |
| #include "base/files/file_util.h" |
| #include "base/logging.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "chromecast/base/path_utils.h" |
| |
| namespace chromecast { |
| |
| namespace { |
| |
| const char kInitialErrorFile[] = "initial_error"; |
| |
| base::FilePath GetInitialErrorFilePath() { |
| return GetHomePathASCII(kInitialErrorFile); |
| } |
| |
| } // namespace |
| |
| ErrorCode GetInitialErrorCode() { |
| std::string initial_error_code_str; |
| if (!base::ReadFileToString(GetInitialErrorFilePath(), |
| &initial_error_code_str)) { |
| return NO_ERROR; |
| } |
| |
| int initial_error_code = 0; |
| if (base::StringToInt(initial_error_code_str, &initial_error_code) && |
| initial_error_code >= NO_ERROR && initial_error_code <= ERROR_UNKNOWN) { |
| VLOG(1) << "Initial error from " << GetInitialErrorFilePath().value() |
| << ": " << initial_error_code; |
| return static_cast<ErrorCode>(initial_error_code); |
| } |
| |
| LOG(ERROR) << "Unknown initial error code: " << initial_error_code_str; |
| return NO_ERROR; |
| } |
| |
| bool SetInitialErrorCode(ErrorCode initial_error_code) { |
| // Note: Do not use Chromium IO methods in this function. When cast_shell |
| // crashes, this function can be called by any thread. |
| const std::string error_file_path = GetInitialErrorFilePath().value(); |
| |
| if (initial_error_code > NO_ERROR && initial_error_code <= ERROR_UNKNOWN) { |
| const std::string initial_error_code_str( |
| base::NumberToString(initial_error_code)); |
| int fd = creat(error_file_path.c_str(), 0640); |
| if (fd < 0) { |
| PLOG(ERROR) << "Could not open error code file"; |
| return false; |
| } |
| |
| int written = |
| write(fd, initial_error_code_str.data(), initial_error_code_str.size()); |
| |
| if (written != static_cast<int>(initial_error_code_str.size())) { |
| PLOG(ERROR) << "Could not write error code to file: written=" << written |
| << ", expected=" << initial_error_code_str.size(); |
| close(fd); |
| return false; |
| } |
| |
| close(fd); |
| return true; |
| } |
| |
| // Remove initial error file if no error. |
| if (unlink(error_file_path.c_str()) == 0 || errno == ENOENT) |
| return true; |
| |
| PLOG(ERROR) << "Failed to remove error file"; |
| return false; |
| } |
| |
| } // namespace chromecast |