| // Copyright 2020 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 "chromeos/startup/startup.h" |
| |
| #include <stdio.h> |
| |
| #include <utility> |
| |
| #include "base/command_line.h" |
| #include "base/files/file_util.h" |
| #include "base/files/scoped_file.h" |
| #include "base/logging.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "chromeos/startup/startup_switches.h" |
| |
| namespace chromeos { |
| |
| absl::optional<std::string> ReadStartupData() { |
| auto* command_line = base::CommandLine::ForCurrentProcess(); |
| if (!command_line->HasSwitch(switches::kCrosStartupDataFD)) |
| return absl::nullopt; |
| |
| int raw_fd = 0; |
| if (!base::StringToInt( |
| command_line->GetSwitchValueASCII(switches::kCrosStartupDataFD), |
| &raw_fd)) { |
| LOG(ERROR) << "Unrecognizable value for --" << switches::kCrosStartupDataFD; |
| return absl::nullopt; |
| } |
| base::ScopedFILE file(fdopen(raw_fd, "r")); |
| std::string content; |
| if (!base::ReadStreamToString(file.get(), &content)) { |
| LOG(ERROR) << "Failed to read startup data"; |
| return absl::nullopt; |
| } |
| |
| return absl::make_optional(std::move(content)); |
| } |
| |
| } // namespace chromeos |