Class UnixSystem

java.lang.Object

com.sun.security.auth.module.UnixSystem

public class UnixSystem
extends Object

This class implementation retrieves and makes available Unix UID/GID/groups information for the current user.

Since:

1.4

Field Summary

Fields

Modifier and Type	Field	Description
protected long	gid	The current group ID.
protected long[]	groups	The current list of groups.
protected long	uid	The current user ID.
protected String	username	The current username.

Constructor Summary

Constructors

Constructor	Description
UnixSystem()	Instantiate a UnixSystem and load the native library to access the underlying system information.

Method Summary

Modifier and Type	Method	Description
long	getGid()	Get the GID for the current Unix user.
long[]	getGroups()	Get the supplementary groups for the current Unix user.
long	getUid()	Get the UID for the current Unix user.
String	getUsername()	Get the username for the current Unix user.

Methods declared in class Object

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

Modifier and Type	Method	Description
protected Object	clone()	Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
boolean	equals(Object o)	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. May cause performance issues, deadlocks and hangs.
final Class<? extends Object>	getClass()	Answers the unique instance of java.lang.Class which represents the class of the receiver.
int	hashCode()	Answers an integer hash code for the receiver.
final void	notify()	Causes one thread which is waiting on the receiver to be made ready to run.
final void	notifyAll()	Causes all threads which are waiting on the receiver to be made ready to run.
String	toString()	Answers a string containing a concise, human-readable description of the receiver.
final void	wait()	Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
final void	wait(long time)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
final void	wait(long time, int frac)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

Field Details

username

protected String username

The current username.

uid

protected long uid

The current user ID.

gid

protected long gid

The current group ID.

groups

protected long[] groups

The current list of groups.

Constructor Details

UnixSystem

public UnixSystem()

Instantiate a UnixSystem and load the native library to access the underlying system information.

Method Details

getUsername

public String getUsername()

Get the username for the current Unix user.

Returns:

the username for the current Unix user.

getUid

public long getUid()

Get the UID for the current Unix user.

Returns:

the UID for the current Unix user.

getGid

public long getGid()

Get the GID for the current Unix user.

Returns:

the GID for the current Unix user.

getGroups

public long[] getGroups()

Get the supplementary groups for the current Unix user.

Returns:

the supplementary groups for the current Unix user.