System Installation Choices › APF-Authorized Libraries › Controlling APF Authorization › APF Library Sources

APF Library Sources

Keep in mind several considerations when you attempt to identify all of your APF‑authorized libraries:

• The system linklist that consists of SYS1.LINKLIB and its concatenations is optionally authorized.
• The explicit APF library list is specified by the appropriate IEAAPFxx and/or PROGxx member(s) of the logical Parmlib library.
• SYS1.SVCLIB is always APF‑authorized.
• All modules contained in LPA, including the MLPA and FLPA extensions, are considered to reside in an APF‑authorized library.
• SYS1.NUCLEUS is not APF‑authorized, but it might as well be because most of the z/OS nucleus runs authorized.

There are other peculiarities in the way APF functions. For example, the linklist libraries are not considered authorized when JOBLIB or STEPLIB refer to them unless they are also mentioned in the explicit APF library list. Even then, if any of the libraries in a JOBLIB or STEPLIB concatenation is unauthorized, the entire concatenation is considered unauthorized.