Class LinkPermission
- java.lang.Object
-
- java.security.Permission
-
- java.security.BasicPermission
-
- java.nio.file.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
Constructor Summary
Constructor | Description |
---|---|
LinkPermission(String name) | Constructs a |
LinkPermission(String name,
String actions) | Constructs a |
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 Detail
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 ornull
- Throws:
-
IllegalArgumentException
- if name is empty or invalid, or actions is a non-empty string