/*

 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.io.File;

import java.io.IOException;

import java.net.NetworkInterface;

import java.net.InetAddress;

import java.util.Scanner;

import java.util.Enumeration;

/**

 * Probes for InfiniBand devices plumbed with IP addresses.

 */

public class ProbeIB {

    public static void main(String[] args) throws IOException {

        Scanner s = new Scanner(new File("/etc/path_to_inst"));

        try {

            while (s.hasNextLine()) {

                String line = s.nextLine();

                if (line.startsWith("#"))

                    continue;

                String[] fields = line.split("\\s+");

                if (!fields[2].equals("\"ibd\""))

                    continue;

                String name = fields[2].substring(1, fields[2].length()-1) + fields[1];

                NetworkInterface ni = NetworkInterface.getByName(name);

                if (ni != null) {

                    Enumeration<InetAddress> addrs = ni.getInetAddresses();

                    while (addrs.hasMoreElements()) {

                        System.out.println(addrs.nextElement().getHostAddress());

                    }

                }

            }

        } finally {

            s.close();

        }

    }

}