1 /*
2 * Copyright (C) 2018 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 */
17 package android.hardware.health.filesystem@1.0;
19 import IGarbageCollectCallback;
21 /**
22 * IFileSystem is an interface that provides operations on underlying storage
23 * devices, including flash memory.
24 */
25 interface IFileSystem {
26 /**
27 * Start garbage collection on the driver of storage devices.
28 *
29 * Garbage collection must be started at regular intervals when it is a good
30 * time for a longer-running cleanup tasks, roughly daily.
31 *
32 * When garbage collection finishes or encounters an error before the
33 * specified timeout, the implementation must call IGarbageCollect.finish
34 * immediately with appropriate result.
35 *
36 * If garbage collection does not finish within the specified timeout,
37 * the implementation must stop garbage collection, and must not call
38 * IGarbageCollect.finish.
39 *
40 * @param timeoutSeconds timeout in seconds. The implementation must
41 * return after the timeout is reached.
42 *
43 * @param callback callback interface. Callback must be null if the client
44 * does not need to receive any callbacks.
45 *
46 */
47 oneway garbageCollect(uint64_t timeoutSeconds,
48 IGarbageCollectCallback callback);
49 };