VolumeManager.h revision 508c0e1605b795bbb51cb47d955b89f3df26ca94
1/* 2 * Copyright (C) 2008 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 _VOLUMEMANAGER_H 18#define _VOLUMEMANAGER_H 19 20#include <pthread.h> 21 22#include <utils/List.h> 23#include <sysutils/SocketListener.h> 24 25#include "Volume.h" 26 27/* The length of an MD5 hash when encoded into ASCII hex characters */ 28#define MD5_ASCII_LENGTH_PLUS_NULL ((MD5_DIGEST_LENGTH*2)+1) 29 30typedef android::List<char *> AsecIdCollection; 31 32class VolumeManager { 33private: 34 static VolumeManager *sInstance; 35 36private: 37 SocketListener *mBroadcaster; 38 39 VolumeCollection *mVolumes; 40 AsecIdCollection *mActiveContainers; 41 bool mUsbMassStorageEnabled; 42 bool mUsbConnected; 43 bool mDebug; 44 45public: 46 virtual ~VolumeManager(); 47 48 int start(); 49 int stop(); 50 51 void handleBlockEvent(NetlinkEvent *evt); 52 void handleSwitchEvent(NetlinkEvent *evt); 53 void handleUsbCompositeEvent(NetlinkEvent *evt); 54 55 int addVolume(Volume *v); 56 57 int listVolumes(SocketClient *cli); 58 int mountVolume(const char *label); 59 int unmountVolume(const char *label, bool force); 60 int shareVolume(const char *label, const char *method); 61 int unshareVolume(const char *label, const char *method); 62 int shareAvailable(const char *method, bool *avail); 63 int shareEnabled(const char *path, const char *method, bool *enabled); 64 int simulate(const char *cmd, const char *arg); 65 int formatVolume(const char *label); 66 67 /* ASEC */ 68 int createAsec(const char *id, unsigned numSectors, const char *fstype, 69 const char *key, int ownerUid); 70 int finalizeAsec(const char *id); 71 int destroyAsec(const char *id, bool force); 72 int mountAsec(const char *id, const char *key, int ownerUid); 73 int unmountAsec(const char *id, bool force); 74 int renameAsec(const char *id1, const char *id2); 75 int getAsecMountPath(const char *id, char *buffer, int maxlen); 76 77 /* Loopback images */ 78 int listMountedObbs(SocketClient* cli); 79 int mountObb(const char *fileName, const char *key, int ownerUid); 80 int unmountObb(const char *fileName, bool force); 81 int getObbMountPath(const char *id, char *buffer, int maxlen); 82 83 /* Shared between ASEC and Loopback images */ 84 int unmountLoopImage(const char *containerId, const char *loopId, 85 const char *fileName, const char *mountPoint, bool force); 86 87 void setDebug(bool enable); 88 89 // XXX: Post froyo this should be moved and cleaned up 90 int cleanupAsec(Volume *v, bool force); 91 92 void setBroadcaster(SocketListener *sl) { mBroadcaster = sl; } 93 SocketListener *getBroadcaster() { return mBroadcaster; } 94 95 static VolumeManager *Instance(); 96 97 static char *asecHash(const char *id, char *buffer, size_t len); 98 99private: 100 VolumeManager(); 101 void readInitialState(); 102 Volume *lookupVolume(const char *label); 103 bool isMountpointMounted(const char *mp); 104 105 inline bool massStorageAvailable() const { return mUsbMassStorageEnabled && mUsbConnected; } 106 void notifyUmsAvailable(bool available); 107}; 108#endif 109