1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
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7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
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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
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19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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 
UnixMountEntry()42     UnixMountEntry() {
43     }
44 
name()45     String name() {
46         return Util.toString(name);
47     }
48 
fstype()49     String fstype() {
50         if (fstypeAsString == null)
51             fstypeAsString = Util.toString(fstype);
52         return fstypeAsString;
53     }
54 
dir()55     byte[] dir() {
56         return dir;
57     }
58 
dev()59     long dev() {
60         return dev;
61     }
62 
63     /**
64      * Tells whether the mount entry has the given option.
65      */
hasOption(String requested)66     boolean hasOption(String requested) {
67         if (optionsAsString == null)
68             optionsAsString = Util.toString(opts);
69         for (String opt: Util.split(optionsAsString, ',')) {
70             if (opt.equals(requested))
71                 return true;
72         }
73         return false;
74     }
75 
76     // generic option
isIgnored()77     boolean isIgnored() {
78         return hasOption("ignore");
79     }
80 
81     // generic option
isReadOnly()82     boolean isReadOnly() {
83         return hasOption("ro");
84     }
85 }
86