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java.dyn
Class LinkagePermission

java.lang.Object
  java.security.Permission
      java.security.BasicPermission
          java.dyn.LinkagePermission

All Implemented Interfaces:

Serializable, Guard

public final class LinkagePermission
extends BasicPermission

PROVISIONAL API, WORK IN PROGRESS: This class is for managing runtime permission checking for operations performed by methods in the Linkage class. Like a RuntimePermission, on which it is modeled, a LinkagePermission contains a target name but no actions list; you either have the named permission or you don't.

The following table lists all the possible LinkagePermission target names, and for each provides a description of what the permission allows and a discussion of the risks of granting code the permission.

Permission Target Name	What the Permission Allows	Risks of Allowing this Permission
invalidateAll	Force the relinking of invokedynamic call sites everywhere.	This could allow an attacker to slow down the system, or perhaps expose timing bugs in a dynamic language implementations, by forcing redundant relinking operations.
invalidateCallerClass.{class name}	Force the relinking of invokedynamic call sites in the given class.	See invalidateAll.

ISSUE: Is this still needed?

See Also:

RuntimePermission, SecurityManager, Serialized Form

Constructor and Description

LinkagePermission(String name)
Create a new LinkagePermission with the given name.

LinkagePermission(String name, Class<?> clazz)
Create a new LinkagePermission with the given name on the given class.

Method Summary

Modifier and Type	Method and Description

Methods inherited from class java.security.BasicPermission

equals, getActions, hashCode, implies, newPermissionCollection

Methods inherited from class java.security.Permission

checkGuard, getName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

LinkagePermission

public LinkagePermission(String name)

Create a new LinkagePermission with the given name. The name is the symbolic name of the LinkagePermission, such as "invalidateCallerClass.*", etc. An asterisk may appear at the end of the name, following a ".", or by itself, to signify a wildcard match.

Parameters:

name - the name of the LinkagePermission

LinkagePermission

public LinkagePermission(String name,
                         Class<?> clazz)

Create a new LinkagePermission with the given name on the given class. Equivalent to LinkagePermission(name+"."+clazz.getName()).

Parameters:

name - the name of the LinkagePermission

clazz - the class affected by the permission