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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_
#define CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_
#include <stdint.h>
#include <memory>
#include <vector>
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "build/build_config.h"
#if BUILDFLAG(IS_WIN)
#include <windows.h>
#endif
namespace image_writer {
class ImageWriterHandler;
#if BUILDFLAG(IS_MAC)
class DiskUnmounterMac;
#endif
// Manages a write within the utility thread. This class holds all the state
// around the writing and communicates with the ImageWriterHandler to dispatch
// messages.
class ImageWriter final {
public:
explicit ImageWriter(ImageWriterHandler* handler,
const base::FilePath& image_path,
const base::FilePath& device_path);
~ImageWriter();
// Starts a write from |image_path_| to |device_path_|.
void Write();
// Starts verifying that |image_path_| and |device_path_| have the same size
// and contents.
void Verify();
// Cancels any pending writes or verifications.
void Cancel();
// Returns whether an operation is in progress.
bool IsRunning() const;
// Checks if a path is a valid target device.
// This method has OS-specific implementations.
bool IsValidDevice();
// Unmounts all volumes on the target device.
// This method has OS-specific implementations.
void UnmountVolumes(base::OnceClosure continuation);
// Return the current image path.
const base::FilePath& GetImagePath();
// Return the current device path.
const base::FilePath& GetDevicePath();
base::WeakPtr<ImageWriter> AsWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
private:
// Convenience wrappers.
void PostTask(base::OnceClosure task);
void PostProgress(int64_t progress);
void Error(const std::string& message);
// Initializes the files.
bool InitializeFiles();
bool OpenDevice();
// Work loops.
void WriteChunk();
void VerifyChunk();
base::FilePath image_path_;
base::FilePath device_path_;
base::File image_file_;
base::File device_file_;
int64_t bytes_processed_;
bool running_;
#if BUILDFLAG(IS_WIN)
std::vector<HANDLE> volume_handles_;
#endif
#if BUILDFLAG(IS_MAC)
friend class DiskUnmounterMac;
std::unique_ptr<DiskUnmounterMac> unmounter_;
#endif
raw_ptr<ImageWriterHandler> handler_;
base::WeakPtrFactory<ImageWriter> weak_ptr_factory_{this};
};
} // namespace image_writer
#endif // CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_
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