1 /*
2 * Copyright 2022 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://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, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.channel.unix;
17
18
19 import io.netty.util.internal.ObjectUtil;
20
21 import java.nio.ByteBuffer;
22
23 /**
24 * A {@link GenericUnixChannelOption} which uses an {@link ByteBuffer} as {@code optval}. The user is responsible
25 * to fill the {@link ByteBuffer} in a correct manner, so it works with the {@param level} and {@param optname}.
26 */
27 public final class RawUnixChannelOption extends GenericUnixChannelOption<ByteBuffer> {
28
29 private final int length;
30
31 /**
32 * Creates a new instance.
33 *
34 * @param name the name that is used.
35 * @param level the level.
36 * @param length the expected length of the optvalue.
37 * @param optname the optname.
38 */
39 public RawUnixChannelOption(String name, int level, int optname, int length) {
40 super(name, level, optname);
41 this.length = ObjectUtil.checkPositive(length, "length");
42 }
43
44 /**
45 * The length of the optval.
46 *
47 * @return the length.
48 */
49 public int length() {
50 return length;
51 }
52
53 @Override
54 public void validate(ByteBuffer value) {
55 super.validate(value);
56 if (value.remaining() != length) {
57 throw new IllegalArgumentException("Length of value does not match. Expected "
58 + length + ", but got " + value.remaining());
59 }
60 }
61 }