6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
4313887: New I/O: Improved filesystem interface
4607272: New I/O: Support asynchronous I/O
Reviewed-by: sherman, chegar
/*
* Copyright 2008-2009 Sun Microsystems, Inc. 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.nio.fs;
/**
* Represents an entry in the mount table.
*/
class UnixMountEntry {
private byte[] name; // file system name
private byte[] dir; // directory (mount point)
private byte[] fstype; // ufs, nfs, ...
private byte[] opts; // mount options
private long dev; // device ID
private volatile String fstypeAsString;
private volatile String optionsAsString;
UnixMountEntry() {
}
String name() {
return new String(name);
}
String fstype() {
if (fstypeAsString == null)
fstypeAsString = new String(fstype);
return fstypeAsString;
}
byte[] dir() {
return dir;
}
long dev() {
return dev;
}
/**
* Tells whether the mount entry has the given option.
*/
boolean hasOption(String requested) {
if (optionsAsString == null)
optionsAsString = new String(opts);
for (String opt: optionsAsString.split("\\,", 0)) {
if (opt.equals(requested))
return true;
}
return false;
}
// generic option
boolean isIgnored() {
return hasOption("ignore");
}
// generic option
boolean isReadOnly() {
return hasOption("ro");
}
}