LinkPermission (Java SE 20 & JDK 20)
- All Implemented Interfaces:
Serializable,Guard
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. |
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Constructor Summary
Constructors
Constructs a
LinkPermissionwith the specified name.Constructs a
LinkPermissionwith the specified name. -
Method Summary
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Constructor Details
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LinkPermission
public LinkPermission
(String name) Constructs a
LinkPermissionwith the specified name.- Parameters:
name- the name of the permission. It must be "hard" or "symbolic".- Throws:
IllegalArgumentException- if name is empty or invalid
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LinkPermission
public LinkPermission
(String name, String actions) Constructs a
LinkPermissionwith 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
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