Controlling Access to the Hierarchical File System › HFS Control Using the Native UNIX Security Model › User Categories and Access Levels

User Categories and Access Levels

Three categories of users can access each directory and file in the HFS:

• The file owner
• The group that owns the file
• All other users defined to USS

Different access levels can be set for any of these three categories. For example, permissions can be defined so that the file owner gets READ and WRITE access, a member of the file’s group gets only READ access, and all other users have neither READ nor WRITE access to the file.