2 * Copyright (C) 2015 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef ANDROID_VOLD_DISK_H
18 #define ANDROID_VOLD_DISK_H
22 #include <utils/Errors.h>
33 * Representation of detected physical media.
35 * Knows how to create volumes based on the partition tables found, and also
36 * how to repartition itself.
40 Disk(const std::string& eventPath, dev_t device, const std::string& nickname, int flags);
44 /* Flag that disk is adoptable */
46 /* Flag that disk is considered primary when the user hasn't
47 * explicitly picked a primary storage location */
48 kDefaultPrimary = 1 << 1,
49 /* Flag that disk is SD card */
51 /* Flag that disk is USB disk */
55 const std::string& getId() { return mId; }
56 const std::string& getEventPath() { return mEventPath; }
57 const std::string& getSysPath() { return mSysPath; }
58 const std::string& getDevPath() { return mDevPath; }
59 dev_t getDevice() { return mDevice; }
60 uint64_t getSize() { return mSize; }
61 const std::string& getLabel() { return mLabel; }
62 int getFlags() { return mFlags; }
64 std::shared_ptr<VolumeBase> findVolume(const std::string& id);
69 status_t readMetadata();
70 status_t readPartitions();
72 status_t unmountAll();
74 status_t partitionPublic();
75 status_t partitionPrivate();
76 status_t partitionMixed(int8_t ratio);
78 void notifyEvent(int msg);
79 void notifyEvent(int msg, const std::string& value);
82 /* ID that uniquely references this disk */
84 /* Original event path */
85 std::string mEventPath;
86 /* Device path under sysfs */
88 /* Device path under dev */
90 /* Kernel device representing disk */
92 /* Size of disk, in bytes */
94 /* User-visible label, such as manufacturer */
96 /* Current partitions on disk */
97 std::vector<std::shared_ptr<VolumeBase>> mVolumes;
98 /* Nickname for this disk */
99 std::string mNickname;
100 /* Flags applicable to this disk */
102 /* Flag indicating object is created */
104 /* Lock held while partitioning */
106 /* Flag that we just partitioned and should format all volumes */
107 bool mJustPartitioned;
109 void createPublicVolume(dev_t device);
110 void createPrivateVolume(dev_t device, const std::string& partGuid);
112 void destroyAllVolumes();
116 DISALLOW_COPY_AND_ASSIGN(Disk);
120 } // namespace android