/*
* $Id$
*
* 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.initrd;
import java.io.IOException;
import javax.naming.NameNotFoundException;
import org.apache.log4j.Logger;
import org.jnode.driver.DeviceAlreadyRegisteredException;
import org.jnode.driver.DeviceManager;
import org.jnode.driver.DeviceNotFoundException;
import org.jnode.driver.DeviceUtils;
import org.jnode.driver.DriverException;
import org.jnode.driver.block.ramdisk.RamDiskDevice;
import org.jnode.driver.block.ramdisk.RamDiskDriver;
import org.jnode.fs.FileSystem;
import org.jnode.fs.FileSystemException;
import org.jnode.fs.fat.FatFileSystemFormatter;
import org.jnode.fs.fat.FatType;
import org.jnode.plugin.Plugin;
import org.jnode.plugin.PluginDescriptor;
import org.jnode.plugin.PluginException;
import org.jnode.util.NumberUtils;
/**
* Dummy plugin that just mount an initial ramdisk on /Jnode
*
* @author gbin
*/
public class InitRamdisk extends Plugin {
private static final Logger log = Logger.getLogger(InitRamdisk.class);
/**
* Create a new instance
*/
public InitRamdisk(PluginDescriptor descriptor) {
super(descriptor);
}
/**
* @see org.jnode.plugin.Plugin#startPlugin()
*/
protected void startPlugin() throws PluginException {
try {
log.info("Create initrd ramdisk on /jnode");
final DeviceManager dm = DeviceUtils.getDeviceManager();
int size = getPreferences().getInt("size", (int) NumberUtils.getSize("100K"));
final RamDiskDevice dev = new RamDiskDevice(null, "dummy", size);
dev.setDriver(new RamDiskDriver("jnode"));
dm.register(dev);
log.info("Format initrd ramdisk");
final FatFileSystemFormatter formatter = new FatFileSystemFormatter(FatType.FAT16);
final FileSystem<?> fs = formatter.format(dev);
try {
fs.getRootEntry().getDirectory().addDirectory("tmp");
} catch (IOException ex) {
log.error("Cannot create tmp on ramdisk");
}
// restart the device
log.info("Restart initrd ramdisk");
dm.stop(dev);
dm.start(dev);
log.info("/jnode ready.");
} catch (NameNotFoundException e) {
throw new PluginException(e);
} catch (DriverException e) {
throw new PluginException(e);
} catch (DeviceAlreadyRegisteredException e) {
throw new PluginException(e);
} catch (FileSystemException e) {
throw new PluginException(e);
} catch (DeviceNotFoundException ex) {
throw new PluginException(ex);
}
}
/**
* @see org.jnode.plugin.Plugin#stopPlugin()
*/
protected void stopPlugin() {
// do nothing for the moment
}
}