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.net.cts; 18 19 import java.io.FileDescriptor; 20 import java.io.IOException; 21 22 public class NetlinkSocket { 23 24 static { 25 System.loadLibrary("cts_jni"); 26 } 27 create_native(FileDescriptor fd)28 private static native void create_native(FileDescriptor fd); sendmsg(FileDescriptor fd, int pid, byte[] bytes)29 private static native int sendmsg(FileDescriptor fd, int pid, byte[] bytes); 30 31 private FileDescriptor fd = new FileDescriptor(); 32 33 /** no public constructors */ NetlinkSocket()34 private NetlinkSocket() { } 35 create()36 public static NetlinkSocket create() { 37 NetlinkSocket retval = new NetlinkSocket(); 38 create_native(retval.fd); 39 return retval; 40 } 41 valid()42 public boolean valid() { 43 return fd.valid(); 44 } 45 sendmsg(int pid, byte[] bytes)46 public int sendmsg(int pid, byte[] bytes) throws IOException { 47 int retval = sendmsg(fd, pid, bytes); 48 if (retval == -1) { 49 throw new IOException("Unable to send message to PID=" + pid); 50 } 51 return retval; 52 } 53 } 54