/*
* $Id$
*
* Copyright (C) 2003-2013 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.nfs.command;
import java.io.File;
import java.io.IOException;
import java.net.InetAddress;
import javax.naming.NameNotFoundException;
import org.jnode.driver.DeviceAlreadyRegisteredException;
import org.jnode.driver.DeviceManager;
import org.jnode.driver.DeviceUtils;
import org.jnode.driver.DriverException;
import org.jnode.fs.FileSystemException;
import org.jnode.fs.nfs.nfs2.NFS2Device;
import org.jnode.fs.nfs.nfs2.NFS2Driver;
import org.jnode.fs.nfs.nfs2.NFS2FileSystem;
import org.jnode.fs.nfs.nfs2.NFS2FileSystemType;
import org.jnode.fs.service.FileSystemService;
import org.jnode.naming.InitialNaming;
import org.jnode.net.nfs.Protocol;
import org.jnode.shell.AbstractCommand;
import org.jnode.shell.syntax.Argument;
import org.jnode.shell.syntax.FileArgument;
import org.jnode.shell.syntax.FlagArgument;
import org.jnode.shell.syntax.IntegerArgument;
/**
* @author Andrei Dore
* @author crawley@jnode.org
*/
public class NFSMountCommand extends AbstractCommand {
private final FileArgument MOUNTPOINT_ARG =
new FileArgument("directory", Argument.MANDATORY, "the mountpoint");
private final NFSHostNameArgument HOST_ARG =
new NFSHostNameArgument("nfsFileSystem", Argument.MANDATORY,
"remote NFS host and exported directory (host:dir)");
private final FlagArgument READ_ONLY_FLAG =
new FlagArgument("readOnly", Argument.OPTIONAL,
"if set, mount the file system read-only");
private final FlagArgument READ_WRITE_FLAG =
new FlagArgument("readWrite", Argument.OPTIONAL,
"if set, mount the file system read-write");
private final FlagArgument TCP_FLAG =
new FlagArgument("tcp", Argument.OPTIONAL, "if set, use tcp protocol");
private final FlagArgument UDP_FLAG =
new FlagArgument("udp", Argument.OPTIONAL, "if set, use udp protocol (default)");
private final IntegerArgument USER_ID_ARG =
new IntegerArgument("uid", Argument.OPTIONAL, "remote user id (default -1)");
private final IntegerArgument GROUP_ID_ARG =
new IntegerArgument("gid", Argument.OPTIONAL, "remote group id (default -1)");
public NFSMountCommand() {
super("mount an NFS filesystem");
registerArguments(MOUNTPOINT_ARG, HOST_ARG, READ_ONLY_FLAG, READ_WRITE_FLAG, TCP_FLAG,
UDP_FLAG, USER_ID_ARG, GROUP_ID_ARG);
}
public static void main(String[] args) throws Exception {
new NFSMountCommand().execute(args);
}
public void execute() throws NameNotFoundException, DriverException, DeviceAlreadyRegisteredException,
FileSystemException, IOException {
final File mountPoint = MOUNTPOINT_ARG.getValue();
final InetAddress host = HOST_ARG.getAddress();
final String remoteDirectory = HOST_ARG.getRemoteDirectory();
// Choose the protocol (udp or tcp) the default value it is udp.
final Protocol protocol =
UDP_FLAG.isSet() ? Protocol.UDP : TCP_FLAG.isSet() ? Protocol.TCP : Protocol.UDP;
int uid = USER_ID_ARG.isSet() ? USER_ID_ARG.getValue() : -1;
int gid = GROUP_ID_ARG.isSet() ? GROUP_ID_ARG.getValue() : -1;
// Choose read-only or read-write. If neither is specified, guess that the
// file system should be read-only if no uid/gid was specified.
boolean readOnly =
READ_ONLY_FLAG.isSet() ? true : READ_WRITE_FLAG.isSet() ? false
: (uid == -1 && gid == -1);
// Now do the work of mounting the file system, taking care to undo as much as
// we can in the event of a failure.
final DeviceManager dm = DeviceUtils.getDeviceManager();
final NFS2Device dev = new NFS2Device(host, remoteDirectory, protocol, uid, gid);
dev.setDriver(new NFS2Driver());
dm.register(dev);
boolean ok = false;
try {
final FileSystemService fss = InitialNaming.lookup(FileSystemService.NAME);
NFS2FileSystemType type = fss.getFileSystemType(NFS2FileSystemType.ID);
final NFS2FileSystem fs = type.create(dev, readOnly);
fss.registerFileSystem(fs);
try {
fss.mount(mountPoint.getAbsolutePath(), fs, null);
ok = true;
} finally {
if (!ok) {
fss.unregisterFileSystem(dev);
}
}
} finally {
if (!ok) {
dm.unregister(dev);
}
}
}
}