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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.

Field Summary

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

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 java.lang.Object

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

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.

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/jdk.security.auth/com/sun/security/auth/module/UnixSystem.html