| // Copyright 2023 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef MACHINE_ID_REGEN_FILE_AUTO_LOCK_H_ |
| #define MACHINE_ID_REGEN_FILE_AUTO_LOCK_H_ |
| |
| #include <brillo/file_utils.h> |
| |
| namespace machineidregen { |
| // FileAutoLock represents a generic "flock". |
| // Lock the lock_path file as per-process lock, do stuff without worrying about |
| // race condition. |
| class FileAutoLock { |
| public: |
| explicit FileAutoLock(const base::FilePath& lock_path) |
| : lock_path_(lock_path) {} |
| |
| ~FileAutoLock() {} |
| |
| FileAutoLock(const FileAutoLock&) = delete; |
| FileAutoLock() = delete; |
| |
| bool lock(); |
| bool unlock(); |
| bool is_valid() const { return fd_.is_valid(); } |
| |
| private: |
| base::ScopedFD fd_; |
| const base::FilePath lock_path_; |
| }; |
| |
| } // namespace machineidregen |
| |
| #endif // MACHINE_ID_REGEN_FILE_AUTO_LOCK_H_ |