/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.fs.service.def;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.jnode.driver.Device;
import org.jnode.fs.FileSystem;
/**
* @author epr
*/
final class FileSystemManager {
/** All registed filesystems (device, fs) */
private Map<Device, FileSystem<?>> filesystems = Collections.synchronizedMap(new HashMap<Device, FileSystem<?>>());
/**
* Register a mounted filesystem
*
* @param fs
*/
public void registerFileSystem(FileSystem<?> fs) {
final Device device = fs.getDevice();
filesystems.put(device, fs);
}
/**
* Unregister a mounted filesystem
*
* @param device
*/
public FileSystem<?> unregisterFileSystem(Device device) {
return filesystems.remove(device);
}
/**
* Gets the filesystem registered on the given device.
*
* @param device
* @return null if no filesystem was found.
*/
public FileSystem<?> getFileSystem(Device device) {
return filesystems.get(device);
}
/**
* Gets all registered filesystems. All instances of the returned collection
* are instanceof FileSystem.
*/
public Collection<FileSystem<?>> fileSystems() {
return new ArrayList<FileSystem<?>>(filesystems.values());
}
}