filesystem.h

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//
// Copyright (C) 2026 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.
 
#pragma once
 
#include <stdint.h>
 
#include <string_view>
 
#include "cuttlefish/io/io.h"
#include "cuttlefish/result/result_type.h"
 
namespace cuttlefish {
 
class ReadFilesystem {
 public:
  virtual ~ReadFilesystem() = default;
 
  virtual Result<std::unique_ptr<ReaderSeeker>> OpenReadOnly(
      std::string_view path) = 0;
 
  virtual Result<uint32_t> FileAttributes(std::string_view path) const = 0;
};
 
class ReadWriteFilesystem : public ReadFilesystem {
 public:
  virtual Result<std::unique_ptr<ReaderWriterSeeker>> CreateFile(
      std::string_view path) = 0;
 
  virtual Result<void> DeleteFile(std::string_view path) = 0;
 
  virtual Result<std::unique_ptr<ReaderWriterSeeker>> OpenReadWrite(
      std::string_view path) = 0;
};
 
}  // namespace cuttlefish