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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.system;
import libcore.util.NonNull;
import libcore.util.Nullable;
import java.net.SocketAddress;
import java.nio.ByteBuffer;
/**
* Corresponds to C's {@code struct msghdr}
*
*/
public final class StructMsghdr{
/**
* Optional address.
* Sendmsg: Caller must populate to specify the target address for a datagram, or pass
* {@code null} to send to the destination of an already-connected socket.
* Recvmsg: Populated by the system to specify the source address.
*/
@Nullable public SocketAddress msg_name;
/** Scatter/gather array */
@NonNull public final ByteBuffer[] msg_iov;
/** Ancillary data */
@Nullable public StructCmsghdr[] msg_control;
/** Flags on received message. */
public int msg_flags;
/**
* Constructs an instance with the given field values
*/
public StructMsghdr(@Nullable SocketAddress msg_name, @NonNull ByteBuffer[] msg_iov,
@Nullable StructCmsghdr[] msg_control, int msg_flags) {
this.msg_name = msg_name;
this.msg_iov = msg_iov;
this.msg_control = msg_control;
this.msg_flags = msg_flags;
}
}