Volume.h revision a2677e4ad01f250b0765f04adf0acfa6627efc98
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 22class NetlinkEvent; 23class VolumeManager; 24 25class Volume { 26private: 27 int mState; 28 29public: 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 41protected: 42 char *mLabel; 43 char *mMountpoint; 44 VolumeManager *mVm; 45 46 /* 47 * The major/minor tuple of the currently mounted filesystem. 48 */ 49 dev_t mCurrentlyMountedKdev; 50 51public: 52 Volume(VolumeManager *vm, const char *label, const char *mount_point); 53 virtual ~Volume(); 54 55 int mountVol(); 56 int unmountVol(); 57 int formatVol(); 58 59 const char *getLabel() { return mLabel; } 60 const char *getMountpoint() { return mMountpoint; } 61 int getState() { return mState; } 62 63 virtual int handleBlockEvent(NetlinkEvent *evt); 64 virtual dev_t getDiskDevice(); 65 virtual void handleVolumeShared(); 66 virtual void handleVolumeUnshared(); 67 68protected: 69 void setState(int state); 70 71 virtual int getDeviceNodes(dev_t *devs, int max) = 0; 72 73 int createDeviceNode(const char *path, int major, int minor); 74 75private: 76 int checkFilesystem(const char *nodepath); 77 int doMountVfat(const char *deviceNode, const char *mountPoint); 78 int doFormatVfat(const char *deviceNode); 79 int initializeMbr(const char *deviceNode); 80 bool isMountpointMounted(const char *path); 81}; 82 83typedef android::List<Volume *> VolumeCollection; 84 85#endif 86