1 /*
2  * Copyright (C) 2011 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 android.system;
18 
19 import libcore.util.Objects;
20 
21 /**
22  * Information returned/taken by fcntl(2) F_GETFL and F_SETFL. Corresponds to C's
23  * {@code struct flock} from
24  * <a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/fcntl.h.html">&lt;fcntl.h&gt;</a>
25  *
26  * @hide
27  */
28 public final class StructFlock {
29     /** The operation type, one of F_RDLCK, F_WRLCK, or F_UNLCK. */
30     public short l_type;
31 
32     /** How to interpret l_start, one of SEEK_CUR, SEEK_END, SEEK_SET. */
33     public short l_whence;
34 
35     /** Start offset. */
36     public long l_start; /*off_t*/
37 
38     /** Byte count to operate on. */
39     public long l_len; /*off_t*/
40 
41     /** Process blocking our lock (filled in by F_GETLK, otherwise unused). */
42     public int l_pid; /*pid_t*/
43 
toString()44     @Override public String toString() {
45         return Objects.toString(this);
46     }
47 }
48