At 22:15 +0100 on 12/23/2010, Lindy Mayfield wrote about Re:
Authorized Rexx Assembler Function:
Why on earth would one write an SVC to put an address into
authorized state when the SVC can do authorized stuff already.
Because it is "simpler" to have a single function SVC to authorize
the caller so that the caller can do what it needs to be authorized
to do then to do all the different things that the caller needs to do
in the SVC. This is why you write different programs than have a
single "one size fits all" program that does everything.
Note: I am not agreeing with the need for the Magic SVC but only
answering your query about what use it can serve. It bypasses the
need to go through the hassle and paper work to get the processing
program APF-Authorized and placed into an APF authorized library (all
the Magic SVC does is place the program in the same site as it would
be if linked and loaded as APF Authorized [ignoring any SubPool or
Key differences).
As to the need for a Magic SVC, I may be wrong but I have a vague
memory of an IBM supplied program (possibly in the MVS days) that had
(or needed) a Magic SVC to do one of its functions. I am flashing on
it being ISPF and the need to call IEBCOPY to compress/copy PDSs
although this impression of who it was may be wrong.
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