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 /**

    29  * Represents an entry in the mount table.

    30  */

    31 

    32 class UnixMountEntry {

    33     private byte[] name;        // file system name

    34     private byte[] dir;         // directory (mount point)

    35     private byte[] fstype;      // ufs, nfs, ...

    36     private byte[] opts;        // mount options

    37     private long dev;           // device ID

    38 

    39     private volatile String fstypeAsString;

    40     private volatile String optionsAsString;

    41 

    42     UnixMountEntry() {

    43     }

    44 

    45     String name() {

    46         return new String(name);

    47     }

    48 

    49     String fstype() {

    50         if (fstypeAsString == null)

    51             fstypeAsString = new String(fstype);

    52         return fstypeAsString;

    53     }

    54 

    55     byte[] dir() {

    56         return dir;

    57     }

    58 

    59     long dev() {

    60         return dev;

    61     }

    62 

    63     /**

    64      * Tells whether the mount entry has the given option.

    65      */

    66     boolean hasOption(String requested) {

    67         if (optionsAsString == null)

    68             optionsAsString = new String(opts);

    69         for (String opt: optionsAsString.split("\\,", 0)) {

    70             if (opt.equals(requested))

    71                 return true;

    72         }

    73         return false;

    74     }

    75 

    76     // generic option

    77     boolean isIgnored() {

    78         return hasOption("ignore");

    79     }

    80 

    81     // generic option

    82     boolean isReadOnly() {

    83         return hasOption("ro");

    84     }

    85 }