Module jdk.attach
Package com.sun.tools.attach

# Class AttachPermission

java.lang.Object
java.security.Permission
java.security.BasicPermission
com.sun.tools.attach.AttachPermission

All Implemented Interfaces:
  `Serializable`, `Guard`

public final class AttachPermission extends BasicPermission
When a `SecurityManager` set, this is the permission which will be checked when code invokes `VirtualMachine.attach` to attach to a target virtual machine. This permission is also checked when an `AttachProvider` is created.

An `AttachPermission` object contains a name (also referred to as a "target name") but no actions list; you either have the named permission or you don't. The following table provides a summary description of what the permission allows, and discusses the risks of granting code the permission.

Table shows permission target name, what the permission allows, and associated risks
Permission Target Name | What the Permission Allows | Risks of Allowing this Permission
--- | --- | ---
attachVirtualMachine | Ability to attach to another Java virtual machine and load agents into that VM. | This allows an attacker to control the target VM which can potentially cause it to misbehave.
createAttachProvider | Ability to create an `AttachProvider` instance. | This allows an attacker to create an AttachProvider which can potentially be used to attach to other Java virtual machines.

Programmers do not normally create AttachPermission objects directly. Instead they are created by the security policy code based on reading the security policy file.

See Also:
  - `VirtualMachine`
  - `AttachProvider`
  - Serialized Form

## Constructor Summary

Constructors
Constructor
Description
`AttachPermission(String name)`
Constructs a new AttachPermission object.
`AttachPermission(String name, String actions)`
Constructs a new AttachPermission object.

## Method Summary

### 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`

## Constructor Details

### AttachPermission

public AttachPermission(String name)
Constructs a new AttachPermission object.

Parameters:
  `name` - Permission name. Must be either "attachVirtualMachine", or "createAttachProvider".
Throws:
  `NullPointerException` - if name is `null`.
  `IllegalArgumentException` - if the name is invalid.

### AttachPermission

public AttachPermission(String name, String actions)
Constructs a new AttachPermission object.

Parameters:
  `name` - Permission name. Must be either "attachVirtualMachine", or "createAttachProvider".
  `actions` - Not used and should be `null`, or the empty string.
Throws:
  `NullPointerException` - if name is `null`.
  `IllegalArgumentException` - if arguments are invalid.