LinkPermission (Java SE 15 & JDK 15) (original) (raw)
All Implemented Interfaces:
[Serializable](../../io/Serializable.html "interface in java.io")
, [Guard](../../security/Guard.html "interface in java.security")
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.
Table shows permission target name, what the permission allows, and associated risks
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
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. |
Method Summary
Constructor Details
LinkPermission
public LinkPermission(String name)
Constructs aLinkPermission
with the specified name.
Parameters:
name
- the name of the permission. It must be "hard" or "symbolic".
Throws:
[IllegalArgumentException](../../lang/IllegalArgumentException.html "class in java.lang")
- if name is empty or invalidLinkPermission
public LinkPermission(String name,String actions)
Constructs aLinkPermission
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](../../lang/IllegalArgumentException.html "class in java.lang")
- if name is empty or invalid, or actions is a non-empty string