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 22 class NetlinkEvent; 23 class VolumeManager; 24 25 class Volume { 26 private: 27 int mState; 28 29 public: 30 static const int State_Init = -1; 31 static const int State_NoMedia = 0; 32 static const int State_Idle = 1; 33 static const int State_Pending = 2; 34 static const int State_Checking = 3; 35 static const int State_Mounted = 4; 36 static const int State_Unmounting = 5; 37 static const int State_Formatting = 6; 38 static const int State_Shared = 7; 39 static const int State_SharedMnt = 8; 40 41 static const char *SECDIR; 42 static const char *SEC_STGDIR; 43 static const char *SEC_STG_SECIMGDIR; 44 static const char *SEC_ASECDIR_EXT; 45 static const char *SEC_ASECDIR_INT; 46 static const char *ASECDIR; 47 48 static const char *LOOPDIR; 49 50 protected: 51 char *mLabel; 52 char *mMountpoint; 53 VolumeManager *mVm; 54 bool mDebug; 55 int mPartIdx; 56 int mOrigPartIdx; 57 bool mRetryMount; 58 59 /* 60 * The major/minor tuple of the currently mounted filesystem. 61 */ 62 dev_t mCurrentlyMountedKdev; 63 64 public: 65 Volume(VolumeManager *vm, const char *label, const char *mount_point); 66 virtual ~Volume(); 67 68 int mountVol(); 69 int unmountVol(bool force, bool revert); 70 int formatVol(); 71 getLabel()72 const char *getLabel() { return mLabel; } getMountpoint()73 const char *getMountpoint() { return mMountpoint; } getState()74 int getState() { return mState; } 75 76 virtual int handleBlockEvent(NetlinkEvent *evt); 77 virtual dev_t getDiskDevice(); 78 virtual dev_t getShareDevice(); 79 virtual void handleVolumeShared(); 80 virtual void handleVolumeUnshared(); 81 82 void setDebug(bool enable); 83 virtual int getVolInfo(struct volume_info *v) = 0; 84 85 protected: 86 void setState(int state); 87 88 virtual int getDeviceNodes(dev_t *devs, int max) = 0; 89 virtual int updateDeviceInfo(char *new_path, int new_major, int new_minor) = 0; 90 virtual void revertDeviceInfo(void) = 0; 91 virtual int isDecrypted(void) = 0; 92 virtual int getFlags(void) = 0; 93 94 int createDeviceNode(const char *path, int major, int minor); 95 96 private: 97 int initializeMbr(const char *deviceNode); 98 bool isMountpointMounted(const char *path); 99 int createBindMounts(); 100 int doUnmount(const char *path, bool force); 101 int doMoveMount(const char *src, const char *dst, bool force); 102 void protectFromAutorunStupidity(); 103 }; 104 105 typedef android::List<Volume *> VolumeCollection; 106 107 #endif 108