Class LinkPermission

All Implemented Interfaces:
Serializable, Guard 
public final class LinkPermission
extends BasicPermission

The Permission class for link creation operations.

The following table provides a summary description of what the permission allows, and discusses the risks of granting code the permission.

Permission Target Name What the Permission Allows Risks of Allowing this Permission
hard Ability to add an existing file to a directory. This is sometimes known as creating a link, or hard link. Extreme care should be taken when granting this permission. It allows linking to any file or directory in the file system thus allowing the attacker access to all files.
symbolic Ability to create symbolic links. Extreme care should be taken when granting this permission. It allows linking to any file or directory in the file system thus allowing the attacker to access to all files.
Since:
1.7
See Also:
Files.createLink(java.nio.file.Path, java.nio.file.Path), Files.createSymbolicLink(java.nio.file.Path, java.nio.file.Path, java.nio.file.attribute.FileAttribute<?>...), Serialized Form

Constructors

Constructor Description
LinkPermission​(String name)

Constructs a LinkPermission with the specified name.
LinkPermission​(String name, String actions)

Constructs a LinkPermission with the specified name.

Methods

Methods declared in class java.security.BasicPermission

equals, getActions, hashCode, implies, newPermissionCollection

Methods declared in class java.security.Permission

checkGuard, getName, toString

Methods declared in class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructors

LinkPermission

public LinkPermission(String name)

Constructs a LinkPermission with the specified name.

Parameters:
name - the name of the permission. It must be "hard" or "symbolic".
Throws:
IllegalArgumentException - if name is empty or invalid

LinkPermission

public LinkPermission(String name,
                      String actions)

Constructs a LinkPermission with the specified name.

Parameters:
name - the name of the permission; must be "hard" or "symbolic".
actions - the actions for the permission; must be the empty string or null
Throws:
IllegalArgumentException - if name is empty or invalid, or actions is a non-empty string

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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/11/docs/api/java.base/java/nio/file/LinkPermission.html