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