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      1 /*
      2  * Copyright (C) 2016 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 package com.android.internal.os;
     18 
     19 import android.os.Parcel;
     20 import android.os.ParcelFileDescriptor;
     21 import android.os.Parcelable;
     22 import android.os.storage.IStorageManager;
     23 import com.android.internal.util.Preconditions;
     24 
     25 /**
     26  * Parcelable class representing AppFuse mount.
     27  * This conveys the result for IStorageManager#openProxyFileDescriptor.
     28  * @see IStorageManager#openProxyFileDescriptor
     29  */
     30 public class AppFuseMount implements Parcelable {
     31     final public int mountPointId;
     32     final public ParcelFileDescriptor fd;
     33 
     34     /**
     35      * @param mountPointId Integer number for mount point that is unique in the lifetime of
     36      *     StorageManagerService.
     37      * @param fd File descriptor pointing /dev/fuse and tagged with the mount point.
     38      */
     39     public AppFuseMount(int mountPointId, ParcelFileDescriptor fd) {
     40         Preconditions.checkNotNull(fd);
     41         this.mountPointId = mountPointId;
     42         this.fd = fd;
     43     }
     44 
     45     @Override
     46     public int describeContents() {
     47         return 0;
     48     }
     49 
     50     @Override
     51     public void writeToParcel(Parcel dest, int flags) {
     52         dest.writeInt(this.mountPointId);
     53         dest.writeParcelable(fd, flags);
     54     }
     55 
     56     public static final Parcelable.Creator<AppFuseMount> CREATOR =
     57             new Parcelable.Creator<AppFuseMount>() {
     58         @Override
     59         public AppFuseMount createFromParcel(Parcel in) {
     60             return new AppFuseMount(in.readInt(), in.readParcelable(null));
     61         }
     62 
     63         @Override
     64         public AppFuseMount[] newArray(int size) {
     65             return new AppFuseMount[size];
     66         }
     67     };
     68 }
     69