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_PUBLIC_VOLUME_H
18 #define ANDROID_VOLD_PUBLIC_VOLUME_H
20 #include "VolumeBase.h"
22 #include <cutils/multiuser.h>
28 * Shared storage provided by public (vfat) partition.
30 * Knows how to mount itself and then spawn a FUSE daemon to synthesize
31 * permissions. AsecVolume and ObbVolume can be stacked above it.
33 * This volume is not inherently multi-user aware, so it has two possible
35 * 1. If primary storage for the device, it only binds itself to the
37 * 2. If secondary storage, it binds itself for all users, but masks
38 * away the Android directory for secondary users.
40 class PublicVolume : public VolumeBase {
42 explicit PublicVolume(dev_t device);
43 virtual ~PublicVolume();
46 status_t doCreate() override;
47 status_t doDestroy() override;
48 status_t doMount() override;
49 status_t doUnmount() override;
50 status_t doFormat(const std::string& fsType) override;
52 status_t readMetadata();
53 status_t initAsecStage();
56 /* Kernel device representing partition */
58 /* Block device path */
60 /* Mount point of raw partition */
63 std::string mFuseDefault;
64 std::string mFuseRead;
65 std::string mFuseWrite;
67 /* PID of FUSE wrapper */
74 /* User-visible filesystem label */
77 DISALLOW_COPY_AND_ASSIGN(PublicVolume);
81 } // namespace android