1 /*

     2  * Copyright 2008-2009 Sun Microsystems, Inc.  All Rights Reserved.

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

     4  *

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

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

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

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

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

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

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

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package sun.nio.fs;

    27 

    28 import java.nio.file.spi.FileSystemProvider;

    29 import java.security.AccessController;

    30 import java.security.PrivilegedAction;

    31 import sun.security.action.GetPropertyAction;

    32 

    33 /**

    34  * Creates this platform's default FileSystemProvider.

    35  */

    36 

    37 public class DefaultFileSystemProvider {

    38     private DefaultFileSystemProvider() { }

    39 

    40     @SuppressWarnings("unchecked")

    41     private static FileSystemProvider createProvider(final String cn) {

    42         return AccessController

    43             .doPrivileged(new PrivilegedAction<FileSystemProvider>() {

    44                 public FileSystemProvider run() {

    45                     Class<FileSystemProvider> c;

    46                     try {

    47                         c = (Class<FileSystemProvider>)Class.forName(cn, true, null);

    48                     } catch (ClassNotFoundException x) {

    49                         throw new AssertionError(x);

    50                     }

    51                     try {

    52                         return c.newInstance();

    53                     } catch (IllegalAccessException x) {

    54                         throw new AssertionError(x);

    55                     } catch (InstantiationException x) {

    56                         throw new AssertionError(x);

    57                     }

    58             }});

    59     }

    60 

    61     /**

    62      * Returns the default FileSystemProvider.

    63      */

    64     public static FileSystemProvider create() {

    65         String osname = AccessController

    66             .doPrivileged(new GetPropertyAction("os.name"));

    67         if (osname.equals("SunOS"))

    68             return createProvider("sun.nio.fs.SolarisFileSystemProvider");

    69         if (osname.equals("Linux"))

    70             return createProvider("sun.nio.fs.LinuxFileSystemProvider");

    71         throw new AssertionError("Platform not recognized");

    72     }

    73 }