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
21 #include "VolumeBase.h"
23 #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);
46 kMajorBlockCdrom = 11,
47 kMajorBlockScsiB = 65,
48 kMajorBlockScsiC = 66,
49 kMajorBlockScsiD = 67,
50 kMajorBlockScsiE = 68,
51 kMajorBlockScsiF = 69,
52 kMajorBlockScsiG = 70,
53 kMajorBlockScsiH = 71,
54 kMajorBlockScsiI = 128,
55 kMajorBlockScsiJ = 129,
56 kMajorBlockScsiK = 130,
57 kMajorBlockScsiL = 131,
58 kMajorBlockScsiM = 132,
59 kMajorBlockScsiN = 133,
60 kMajorBlockScsiO = 134,
61 kMajorBlockScsiP = 135,
63 kMajorBlockExperimentalMin = 240,
64 kMajorBlockExperimentalMax = 254,
68 /* Flag that disk is adoptable */
70 /* Flag that disk is considered primary when the user hasn't
71 * explicitly picked a primary storage location */
72 kDefaultPrimary = 1 << 1,
73 /* Flag that disk is SD card */
75 /* Flag that disk is USB disk */
77 /* Flag that disk is EMMC internal */
79 /* Flag that disk is non-removable */
80 kNonRemovable = 1 << 5,
81 /* Flag that disk is CDROM */
85 const std::string& getId() { return mId; }
86 const std::string& getEventPath() { return mEventPath; }
87 const std::string& getSysPath() { return mSysPath; }
88 const std::string& getDevPath() { return mDevPath; }
89 dev_t getDevice() { return mDevice; }
90 uint64_t getSize() { return mSize; }
91 const std::string& getLabel() { return mLabel; }
92 int getFlags() { return mFlags; }
94 std::shared_ptr<VolumeBase> findVolume(const std::string& id);
96 void listVolumes(VolumeBase::Type type, std::list<std::string>& list);
98 virtual status_t create();
99 virtual status_t destroy();
101 virtual status_t readMetadata();
102 virtual status_t readPartitions();
104 status_t unmountAll();
106 virtual status_t partitionPublic();
107 virtual status_t partitionPrivate();
108 virtual status_t partitionMixed(int8_t ratio);
110 void notifyEvent(int msg);
111 void notifyEvent(int msg, const std::string& value);
113 static bool isVirtioBlkDevice(unsigned int major);
116 /* ID that uniquely references this disk */
118 /* Original event path */
119 std::string mEventPath;
120 /* Device path under sysfs */
121 std::string mSysPath;
122 /* Device path under dev */
123 std::string mDevPath;
124 /* Kernel device representing disk */
126 /* Size of disk, in bytes */
128 /* User-visible label, such as manufacturer */
130 /* Current partitions on disk */
131 std::vector<std::shared_ptr<VolumeBase>> mVolumes;
132 /* Nickname for this disk */
133 std::string mNickname;
134 /* Flags applicable to this disk */
136 /* Flag indicating object is created */
138 /* Flag that we just partitioned and should format all volumes */
139 bool mJustPartitioned;
141 void createPublicVolume(dev_t device,
142 const std::string& fstype = "",
143 const std::string& mntopts = "");
144 void createPrivateVolume(dev_t device, const std::string& partGuid);
146 void destroyAllVolumes();
150 DISALLOW_COPY_AND_ASSIGN(Disk);
154 } // namespace android