/*

 * Copyright (c) 2006, 2018, 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.

 */

/* @test

   @bug 6192331 6348207 8202076

   @summary Check if File.exists()/length() works correctly on Windows

            special files hiberfil.sys and pagefile.sys

 */

import java.io.File;

public class WinSpecialFiles {

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

        String osName = System.getProperty("os.name");

        if (!osName.startsWith("Windows")) {

            return;

        }

        File root = new File("C:\\");

        File[] dir = root.listFiles();

        for (int i = 0; i < dir.length; i++) {

            if (!dir[i].exists()) {

                throw new Exception("exists() returns false for <"

                                    + dir[i].getPath() + ">");

            }

            String name = dir[i].getPath().toLowerCase();

            if (name.indexOf("pagefile.sys") != -1 ||

                name.indexOf("hiberfil.sys") != -1) {

                if (dir[i].length() == 0) {

                    throw new Exception("Size of existing file \""

                                        + dir[i].getPath()

                                        + "\" is ZERO");

                }

            }

        }

    }

}