Add capability to receive FD with NativeDaemonConnector.

BUG=25755372

Change-Id: I2888219b77cf04f4bf749d5518ff62ba16258f2d

services/core/java/com/android/server/NativeDaemonConnector.java

@@ -177,6 +177,7 @@ final class NativeDaemonConnector implements Runnable, Handler.Callback, Watchdo
 
             mCallbacks.onDaemonConnected();
 
+            FileDescriptor[] fdList = null;
             byte[] buffer = new byte[BUFFER_SIZE];
             int start = 0;
 
@@ -186,6 +187,7 @@ final class NativeDaemonConnector implements Runnable, Handler.Callback, Watchdo
                     loge("got " + count + " reading with start = " + start);
                     break;
                 }
+                fdList = socket.getAncillaryFileDescriptors();
 
                 // Add our starting point to the count and reset the start.
                 count += start;
@@ -200,8 +202,8 @@ final class NativeDaemonConnector implements Runnable, Handler.Callback, Watchdo
 
                         boolean releaseWl = false;
                         try {
-                            final NativeDaemonEvent event = NativeDaemonEvent.parseRawEvent(
-                                    rawEvent);
+                            final NativeDaemonEvent event =
+                                    NativeDaemonEvent.parseRawEvent(rawEvent, fdList);
 
                             log("RCV <- {" + event + "}");
 

services/core/java/com/android/server/NativeDaemonEvent.java

@@ -19,6 +19,7 @@ package com.android.server;
 import android.util.Slog;
 import com.google.android.collect.Lists;
 
+import java.io.FileDescriptor;
 import java.util.ArrayList;
 
 /**
@@ -35,15 +36,17 @@ public class NativeDaemonEvent {
     private final String mRawEvent;
     private final String mLogMessage;
     private String[] mParsed;
+    private FileDescriptor[] mFdList;
 
     private NativeDaemonEvent(int cmdNumber, int code, String message,
-                              String rawEvent, String logMessage) {
+                              String rawEvent, String logMessage, FileDescriptor[] fdList) {
         mCmdNumber = cmdNumber;
         mCode = code;
         mMessage = message;
         mRawEvent = rawEvent;
         mLogMessage = logMessage;
         mParsed = null;
+        mFdList = fdList;
     }
 
     static public final String SENSITIVE_MARKER = "{{sensitive}}";
@@ -60,6 +63,10 @@ public class NativeDaemonEvent {
         return mMessage;
     }
 
+    public FileDescriptor[] getFileDescriptors() {
+        return mFdList;
+    }
+
     @Deprecated
     public String getRawEvent() {
         return mRawEvent;
@@ -127,7 +134,7 @@ public class NativeDaemonEvent {
      * @throws IllegalArgumentException when line doesn't match format expected
      *             from native side.
      */
-    public static NativeDaemonEvent parseRawEvent(String rawEvent) {
+    public static NativeDaemonEvent parseRawEvent(String rawEvent, FileDescriptor[] fdList) {
         final String[] parsed = rawEvent.split(" ");
         if (parsed.length < 2) {
             throw new IllegalArgumentException("Insufficient arguments");
@@ -164,7 +171,7 @@ public class NativeDaemonEvent {
 
         final String message = rawEvent.substring(skiplength);
 
-        return new NativeDaemonEvent(cmdNumber, code, message, rawEvent, logMessage);
+        return new NativeDaemonEvent(cmdNumber, code, message, rawEvent, logMessage, fdList);
     }
 
     /**