Support full 32 bits for socket tags.

package com.android.server;

import android.net.NetworkStats;

import android.os.SystemProperties;

import android.util.Log;

import android.util.Slog;

import dalvik.system.SocketTagger;

import libcore.io.IoUtils;

import java.io.FileDescriptor;

import java.io.FileOutputStream;

import java.io.IOException;

import java.math.BigInteger;

import java.net.SocketException;

import java.nio.charset.Charsets;

/**

 * Assigns tags to sockets for traffic stats.

     * format like {@code 0x7fffffff00000000}.

     */

    public static int kernelToTag(String string) {

        // TODO: migrate to direct integer instead of odd shifting

        return (int) (Long.decode(string) >> 32);

        int length = string.length();

        if (length > 10) {

            return Long.decode(string.substring(0, length - 8)).intValue();

        } else {

            return 0;

        }

    }

    private static native int native_tagSocketFd(FileDescriptor fd, int tag, int uid);

import android.content.res.Resources;

import android.net.NetworkStats;

import android.net.TrafficStats;

import android.test.AndroidTestCase;

import com.android.frameworks.coretests.R;

        assertEquals(2147483647, kernelToTag("0x7fffffff00000000"));

        assertEquals(0, kernelToTag("0x0000000000000000"));

        assertEquals(2147483136, kernelToTag("0x7FFFFE0000000000"));

        assertEquals(0, kernelToTag("0x0"));

        assertEquals(0, kernelToTag("0xf00d"));

        assertEquals(1, kernelToTag("0x100000000"));

        assertEquals(14438007, kernelToTag("0xdc4e7700000000"));

        assertEquals(TrafficStats.TAG_SYSTEM_DOWNLOAD, kernelToTag("0xffffff0100000000"));

    }

    public void testNetworkStatsWithSet() throws Exception {