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/*
* Copyright (c) 2013 The CyanogenMod 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.
*/
#ifndef _VOLD_CLIENT_H
#define _VOLD_CLIENT_H
#include <sys/types.h>
#include <pthread.h>
#include <string>
#include <vector>
class VoldWatcher {
public:
virtual ~VoldWatcher(void) {}
virtual void onVolumeChanged(void) = 0;
};
class VolumeInfo {
public:
std::string mId;
std::string mLabel;
std::string mPath;
std::string mInternalPath;
int mState;
};
class VoldClient
{
public:
VoldClient(VoldWatcher* watcher = nullptr);
void start(void);
void stop(void);
std::vector<VolumeInfo> getVolumes(void) { return mVolumes; }
VolumeInfo getVolume(const std::string& id);
bool isEmulatedStorage(void) { return mEmulatedStorage; }
bool reset(void);
bool mountAll(void);
bool unmountAll(void);
bool volumeMount(const std::string& id);
bool volumeUnmount(const std::string& id, bool detach = false);
bool volumeFormat(const std::string& id);
bool volumeAvailable(const std::string& id);
private:
void resetVolumeState(void);
VolumeInfo* getVolumeLocked(const std::string& id);
bool sendCommand(unsigned int len, const char** command, bool wait = true);
void handleCommandOkay(void);
void handleVolumeCreated(const std::string& id, const std::string& type,
const std::string& disk, const std::string& guid);
void handleVolumeStateChanged(const std::string& id, const std::string& state);
void handleVolumeFsLabelChanged(const std::string& id, const std::string& label);
void handleVolumePathChanged(const std::string& id, const std::string& path);
void handleVolumeInternalPathChanged(const std::string& id, const std::string& path);
void handleVolumeDestroyed(const std::string& id);
void dispatch(const std::string& line);
public:
void run(void); // INTERNAL
private:
bool mRunning;
int mSock;
pthread_t mThread;
pthread_mutex_t mSockMutex;
pthread_cond_t mSockCond;
unsigned int mInFlight;
unsigned int mResult;
VoldWatcher* mWatcher;
pthread_rwlock_t mVolumeLock;
bool mVolumeChanged;
bool mEmulatedStorage;
std::vector<VolumeInfo> mVolumes;
};
extern VoldClient* vdc;
#endif
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