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// Copyright (c) 2009 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 CHROMEOS_PLATFORM_UPDATE_ENGINE_INSTALL_ACTION_H__
#define CHROMEOS_PLATFORM_UPDATE_ENGINE_INSTALL_ACTION_H__
#include "base/scoped_ptr.h"
#include "update_engine/action.h"
#include "update_engine/delta_diff_parser.h"
#include "update_engine/install_plan.h"
#include "update_engine/update_metadata.pb.h"
// The Install Action is responsible for ensuring the update that's been
// downloaded has been installed. This may be a no-op in the case of a full
// update, since those will be downloaded directly into the destination
// partition. However, for a delta update some work is required.
// An InstallPlan struct must be passed to this action before PerformAction()
// is called so that this action knows if it's a delta update, and if so,
// what the paths are.
// TODO(adlr): At the moment, InstallAction is synchronous. It should be
// updated to be asynchronous at some point.
namespace chromeos_update_engine {
class InstallAction;
class NoneType;
template<>
class ActionTraits<InstallAction> {
public:
// Takes the InstallPlan for input
typedef InstallPlan InputObjectType;
// On success, puts the output device path on output
typedef std::string OutputObjectType;
};
class InstallAction : public Action<InstallAction> {
public:
InstallAction() {}
typedef ActionTraits<InstallAction>::InputObjectType InputObjectType;
typedef ActionTraits<InstallAction>::OutputObjectType OutputObjectType;
void PerformAction();
// This action is synchronous for now.
void TerminateProcessing() { CHECK(false); }
// Debugging/logging
static std::string StaticType() { return "InstallAction"; }
std::string Type() const { return StaticType(); }
private:
// Installs 'file' into mountpoint. 'path' is the path that 'file'
// should have when we reboot and mountpoint is root.
bool InstallFile(const std::string& mountpoint,
const DeltaArchiveManifest_File& file,
const std::string& path,
const DeltaDiffParser& parser) const;
// These are helpers for InstallFile. They focus on specific file types:
// Regular data files:
bool InstallFileRegularFile(const std::string& mountpoint,
const DeltaArchiveManifest_File& file,
const std::string& path,
const DeltaDiffParser& parser,
const bool exists) const;
// char/block devices, fifos, and sockets:
bool InstallFileSpecialFile(const std::string& mountpoint,
const DeltaArchiveManifest_File& file,
const std::string& path,
const DeltaDiffParser& parser,
const bool exists) const;
// symlinks:
bool InstallFileSymlink(const std::string& mountpoint,
const DeltaArchiveManifest_File& file,
const std::string& path,
const DeltaDiffParser& parser,
const bool exists) const;
DISALLOW_COPY_AND_ASSIGN(InstallAction);
};
} // namespace chromeos_update_engine
#endif // CHROMEOS_PLATFORM_UPDATE_ENGINE_INSTALL_ACTION_H__
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