Features of the TFS

The temporary file system includes these features:

Attributes unique to z/OS UNIX are supported (for example, external symbolic links and the create time attribute) and is not part of a branded product.
Access control lists (ACLs) are supported. The number of ACL entries that TFS supports is limited by the block size. Each ACL takes one TFS block. For example, if the TFS block size is set to 4K (the default is -b0), the number of ACL entries in any ACL is limited to approximately 500. For more information about ACLs, see Using access control lists (ACLs).
You can set up basic partitioned access method (BPAM) access to files in the TFS. Each TFS directory is treated as if it were a PDSE or PDS directory. For an introduction to BPAM, see z/OS DFSMS Using Data Sets. For a discussion about reading UNIX files with BPAM, see z/OS DFSMS Using Data Sets.