Using the REFRPROT statement
Use the REFRPROT statement type to specify that REFR programs are
protected from modification by placing them in key 0, non-fetch protected
storage,
and page protecting the full pages.
Therefore, any parts of the program that are on partial pages are not
page-protected.
For more information on protectionof REFR programs, see
z/OS MVS Program Management: User's Guide and Reference
That's Shmuel
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
________________________________________
From: IBM Mainframe Discussion List [[email protected]] on behalf of
Thomas David Rivers [[email protected]]
Sent: Monday, February 1, 2021 7:06 AM
To: [email protected]
Subject: Re: STORAGE KEY of loaded executable
Binyamin Dissen wrote:
>On Sun, 31 Jan 2021 18:34:11 -0500 Thomas David Rivers <[email protected]>
>wrote:
>
>
>:> When you LOAD a program, how do you control the KEY
>:> for the memory the LOAD'd program occupies? Can you, or
>:> does z/OS always LOAD (non-auth) programs in KEY=8?
>
>If you mark the module refreshable it should nowadays be loaded into SP=252
>which is not fetch protected.
>
>
I have to admit to not looking for it yet - but do you have
a pointer to the doc for this? Schmuel described the various
Subpools and fetchability attributes which I was able to find
via a google text search. These seem to be described in the
ATTACHX documentation... but that must also apply to LOAD
(I suppose???)
Thanks for the pointer about REFRESH (REFR option on binder),
I'll look for more info.
The downside of REFR is it defeats the use of debuggers which
modify the code-stream to insert break-points... but, it is what it is...
- Thanks -
- Dave R. -
--
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