1//
2// Copyright (C) 2015 The Android Open Source Project
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8//      http://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15//
16
17#ifndef UPDATE_ENGINE_PAYLOAD_GENERATOR_RAW_FILESYSTEM_H_
18#define UPDATE_ENGINE_PAYLOAD_GENERATOR_RAW_FILESYSTEM_H_
19
20// A simple filesystem interface implementation used for unknown filesystem
21// format such as the kernel.
22
23#include "update_engine/payload_generator/filesystem_interface.h"
24
25#include <string>
26#include <vector>
27
28namespace chromeos_update_engine {
29
30class RawFilesystem : public FilesystemInterface {
31 public:
32  static std::unique_ptr<RawFilesystem> Create(
33      const std::string& filename, uint64_t block_size, uint64_t block_count);
34  virtual ~RawFilesystem() = default;
35
36  // FilesystemInterface overrides.
37  size_t GetBlockSize() const override;
38  size_t GetBlockCount() const override;
39
40  // GetFiles will return only one file with all the blocks of the filesystem
41  // with the name passed during construction.
42  bool GetFiles(std::vector<File>* files) const override;
43
44  bool LoadSettings(brillo::KeyValueStore* store) const override {
45    return false;
46  }
47
48 private:
49  RawFilesystem() = default;
50
51  std::string filename_;
52  uint64_t block_count_;
53  uint64_t block_size_;
54
55  DISALLOW_COPY_AND_ASSIGN(RawFilesystem);
56};
57
58}  // namespace chromeos_update_engine
59
60#endif  // UPDATE_ENGINE_PAYLOAD_GENERATOR_RAW_FILESYSTEM_H_
61