Volume.h revision 49e2bce5b74129c26a35e25d4693cbfe98c4688e 
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;
23
24class Volume {
25private:
26    int mState;
27
28public:
29    static const int State_Init       = -1;
30    static const int State_Idle       = 1;
31    static const int State_Pending    = 2;
32    static const int State_Mounted    = 3;
33    static const int State_Checking   = 4;
34    static const int State_Formatting = 5;
35
36protected:
37    char *mLabel;
38    char *mMountpoint;
39
40public:
41    Volume(const char *label, const char *mount_point);
42    virtual ~Volume();
43
44    int mount();
45    int unmount();
46
47    const char *getLabel() { return mLabel; }
48    const char *getMountpoint() { return mMountpoint; }
49    int getState() { return mState; }
50
51    virtual int handleBlockEvent(NetlinkEvent *evt);
52
53protected:
54    void setState(int state);
55
56    virtual int prepareToMount(int *major, int *minor) = 0;
57
58private:
59    int checkFilesystem(const char *nodepath);
60};
61
62typedef android::List<Volume *> VolumeCollection;
63
64#endif
65