blob: da2c104ef5abed23a9a51544b4c8710e8ea8e864 [file] [log] [blame]
// Copyright 2014 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.
#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/bind.h"
#include "base/callback.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/memory/weak_ptr.h"
#include "build/build_config.h"
#if defined(OS_WIN)
#include <windows.h>
#endif
namespace image_writer {
class ImageWriterHandler;
#if defined(OS_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 : public base::SupportsWeakPtr<ImageWriter> {
public:
explicit ImageWriter(ImageWriterHandler* handler,
const base::FilePath& image_path,
const base::FilePath& device_path);
virtual ~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();
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 defined(OS_WIN)
std::vector<HANDLE> volume_handles_;
#endif
#if defined(OS_MAC)
friend class DiskUnmounterMac;
std::unique_ptr<DiskUnmounterMac> unmounter_;
#endif
ImageWriterHandler* handler_;
};
} // namespace image_writer
#endif // CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_