1 /*

     2  * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2013 SAP AG. All rights reserved.

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

     5  *

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

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

     8  * published by the Free Software Foundation.  Oracle designates this

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

    10  * by Oracle in the LICENSE file that accompanied this code.

    11  *

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

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

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

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

    16  * accompanied this code).

    17  *

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

    19  * 2 along with this work; if not, write to the Free Software Foundation,

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

    21  *

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

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

    24  * questions.

    25  */

    26 

    27 package sun.nio.fs;

    28 

    29 import java.nio.file.attribute.*;

    30 import java.util.*;

    31 import java.io.IOException;

    32 

    33 /**

    34  * AIX implementation of FileStore

    35  */

    36 

    37 class AixFileStore

    38     extends UnixFileStore

    39 {

    40 

    41     AixFileStore(UnixPath file) throws IOException {

    42         super(file);

    43     }

    44 

    45     AixFileStore(UnixFileSystem fs, UnixMountEntry entry) throws IOException {

    46         super(fs, entry);

    47     }

    48 

    49     /**

    50      * Finds, and returns, the mount entry for the file system where the file

    51      * resides.

    52      */

    53     @Override

    54     UnixMountEntry findMountEntry() throws IOException {

    55         AixFileSystem fs = (AixFileSystem)file().getFileSystem();

    56 

    57         // step 1: get realpath

    58         UnixPath path = null;

    59         try {

    60             byte[] rp = UnixNativeDispatcher.realpath(file());

    61             path = new UnixPath(fs, rp);

    62         } catch (UnixException x) {

    63             x.rethrowAsIOException(file());

    64         }

    65 

    66         // step 2: find mount point

    67         UnixPath parent = path.getParent();

    68         while (parent != null) {

    69             UnixFileAttributes attrs = null;

    70             try {

    71                 attrs = UnixFileAttributes.get(parent, true);

    72             } catch (UnixException x) {

    73                 x.rethrowAsIOException(parent);

    74             }

    75             if (attrs.dev() != dev())

    76                 break;

    77             path = parent;

    78             parent = parent.getParent();

    79         }

    80 

    81         // step 3: lookup mounted file systems

    82         byte[] dir = path.asByteArray();

    83         for (UnixMountEntry entry: fs.getMountEntries()) {

    84             if (Arrays.equals(dir, entry.dir()))

    85                 return entry;

    86         }

    87 

    88         throw new IOException("Mount point not found");

    89     }

    90 

    91     // returns true if extended attributes enabled on file system where given

    92     // file resides, returns false if disabled or unable to determine.

    93     private boolean isExtendedAttributesEnabled(UnixPath path) {

    94         return false;

    95     }

    96 

    97     @Override

    98     public boolean supportsFileAttributeView(Class<? extends FileAttributeView> type) {

    99         return super.supportsFileAttributeView(type);

   100     }

   101 

   102     @Override

   103     public boolean supportsFileAttributeView(String name) {

   104         return super.supportsFileAttributeView(name);

   105     }

   106 }