56 lines
1.6 KiB
Java
56 lines
1.6 KiB
Java
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/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.system;
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import libcore.util.NonNull;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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/**
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* Corresponds to C's {@code struct cmsghdr}.
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*
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*/
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public final class StructCmsghdr {
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/** Originating protocol */
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public final int cmsg_level;
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/** Protocol-specific type */
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public final int cmsg_type;
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/** message data sent/received */
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@NonNull public final byte[] cmsg_data;
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public StructCmsghdr(int cmsg_level, int cmsg_type, short value) {
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// Short.Size unit is bits, ByteBuffer data unit is bytes
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ByteBuffer buf = ByteBuffer.allocate(Short.SIZE / 8);
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buf.order(ByteOrder.nativeOrder());
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buf.putShort(value);
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this.cmsg_level = cmsg_level;
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this.cmsg_type = cmsg_type;
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this.cmsg_data = buf.array();
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}
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public StructCmsghdr(int cmsg_level, int cmsg_type, @NonNull byte[] value) {
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this.cmsg_level = cmsg_level;
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this.cmsg_type = cmsg_type;
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this.cmsg_data = value;
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}
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}
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