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; 45 static const char *ASECDIR; 46 47 static const char *LOOPDIR; 48 49 protected: 50 char *mLabel; 51 char *mMountpoint; 52 VolumeManager *mVm; 53 bool mDebug; 54 int mPartIdx; 55 56 /* 57 * The major/minor tuple of the currently mounted filesystem. 58 */ 59 dev_t mCurrentlyMountedKdev; 60 61 public: 62 Volume(VolumeManager *vm, const char *label, const char *mount_point); 63 virtual ~Volume(); 64 65 int mountVol(); 66 int unmountVol(bool force); 67 int formatVol(); 68 getLabel()69 const char *getLabel() { return mLabel; } getMountpoint()70 const char *getMountpoint() { return mMountpoint; } getState()71 int getState() { return mState; } 72 73 virtual int handleBlockEvent(NetlinkEvent *evt); 74 virtual dev_t getDiskDevice(); 75 virtual dev_t getShareDevice(); 76 virtual void handleVolumeShared(); 77 virtual void handleVolumeUnshared(); 78 79 void setDebug(bool enable); 80 81 protected: 82 void setState(int state); 83 84 virtual int getDeviceNodes(dev_t *devs, int max) = 0; 85 86 int createDeviceNode(const char *path, int major, int minor); 87 88 private: 89 int initializeMbr(const char *deviceNode); 90 bool isMountpointMounted(const char *path); 91 int createBindMounts(); 92 int doUnmount(const char *path, bool force); 93 int doMoveMount(const char *src, const char *dst, bool force); 94 void protectFromAutorunStupidity(); 95 }; 96 97 typedef android::List<Volume *> VolumeCollection; 98 99 #endif 100