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 _VOLUME_H 18 #define _VOLUME_H 19 20 #include <utils/List.h> 21 #include <fs_mgr.h> 22 23 class NetlinkEvent; 24 class VolumeManager; 25 26 class Volume { 27 private: 28 int mState; 29 int mFlags; 30 31 public: 32 static const int State_Init = -1; 33 static const int State_NoMedia = 0; 34 static const int State_Idle = 1; 35 static const int State_Pending = 2; 36 static const int State_Checking = 3; 37 static const int State_Mounted = 4; 38 static const int State_Unmounting = 5; 39 static const int State_Formatting = 6; 40 static const int State_Shared = 7; 41 static const int State_SharedMnt = 8; 42 43 static const char *MEDIA_DIR; 44 static const char *FUSE_DIR; 45 static const char *SEC_ASECDIR_EXT; 46 static const char *SEC_ASECDIR_INT; 47 static const char *ASECDIR; 48 static const char *LOOPDIR; 49 static const char *BLKID_PATH; 50 51 protected: 52 char* mLabel; 53 char* mUuid; 54 char* mUserLabel; 55 VolumeManager *mVm; 56 bool mDebug; 57 int mPartIdx; 58 int mOrigPartIdx; 59 bool mRetryMount; 60 61 /* 62 * The major/minor tuple of the currently mounted filesystem. 63 */ 64 dev_t mCurrentlyMountedKdev; 65 66 public: 67 Volume(VolumeManager *vm, const fstab_rec* rec, int flags); 68 virtual ~Volume(); 69 70 int mountVol(); 71 int unmountVol(bool force, bool revert); 72 int formatVol(bool wipe); 73 getLabel()74 const char* getLabel() { return mLabel; } getUuid()75 const char* getUuid() { return mUuid; } getUserLabel()76 const char* getUserLabel() { return mUserLabel; } getState()77 int getState() { return mState; } getFlags()78 int getFlags() { return mFlags; }; 79 80 /* Mountpoint of the raw volume */ 81 virtual const char *getMountpoint() = 0; 82 virtual const char *getFuseMountpoint() = 0; 83 84 virtual int handleBlockEvent(NetlinkEvent *evt); 85 virtual dev_t getDiskDevice(); 86 virtual dev_t getShareDevice(); 87 virtual void handleVolumeShared(); 88 virtual void handleVolumeUnshared(); 89 90 void setDebug(bool enable); 91 virtual int getVolInfo(struct volume_info *v) = 0; 92 93 protected: 94 void setUuid(const char* uuid); 95 void setUserLabel(const char* userLabel); 96 void setState(int state); 97 98 virtual int getDeviceNodes(dev_t *devs, int max) = 0; 99 virtual int updateDeviceInfo(char *new_path, int new_major, int new_minor) = 0; 100 virtual void revertDeviceInfo(void) = 0; 101 virtual int isDecrypted(void) = 0; 102 103 int createDeviceNode(const char *path, int major, int minor); 104 105 private: 106 int initializeMbr(const char *deviceNode); 107 bool isMountpointMounted(const char *path); 108 int mountAsecExternal(); 109 int doUnmount(const char *path, bool force); 110 int extractMetadata(const char* devicePath); 111 }; 112 113 typedef android::List<Volume *> VolumeCollection; 114 115 #endif 116