org.w3c.util
Class Unix

java.lang.Object
  org.w3c.util.Unix

public class Unix
extends java.lang.Object

Native methods to do some UNIX specific system calls. This class can be used on UNIX variants to access some specific system calls.

Constructor Summary

Unix()

Method Summary

void	chroot(java.lang.String root) Change the process root, using chroot system call.
int	getGID(java.lang.String gname) Get the group identifier for that group.
int	getUID(java.lang.String uname) Get the user identifier for that user.
static Unix	getUnix() Get the UNIX system call manger.
boolean	isResolved() Can I perform UNIX system calls through that instance ?
void	setGID(int gid) Set the group id for the running process.
void	setUID(int uid) Set the user id for the running process.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Unix

public Unix()

Method Detail

getUnix

public static Unix getUnix()

Get the UNIX system call manger.

Returns:

An instance of this class, suitable to call UNIX system calls.

isResolved

public boolean isResolved()

Can I perform UNIX system calls through that instance ?

Returns:

A boolean, true if these system calls are allowed, false otherwise.

getUID

public int getUID(java.lang.String uname)

Get the user identifier for that user.

Returns:

The user's identifier, or -1 if user was not found.

getGID

public int getGID(java.lang.String gname)

Get the group identifier for that group.

Returns:

The group identifier, or -1 if not found.

setUID

public void setUID(int uid)
            throws UnixException

Set the user id for the running process.

Parameters:

uid - The new user identifier for the process.

Throws:

UnixException - If failed.

setGID

public void setGID(int gid)
            throws UnixException

Set the group id for the running process.

Parameters:

gid - The new user identifier for the process.

Throws:

UnixException - If failed.

chroot

public void chroot(java.lang.String root)
            throws UnixException

Change the process root, using chroot system call.

Parameters:

root - The new root for the process.

Throws:

UnixException - If failed.