On 31/08/2021 10:47 am, Jim Mulder wrote:
For system integrity, programs which run in an
authorized state need to be protected from modification by
unauthorized programs. Authorized programs which can run in
an address space where unauthorized programs are also running
need to be RENT for this purpose. So in that case, it is
at least a purpose of marking them RENT.
Jim Mulder z/OS Diagnosis, Design, Development, Test IBM Corp.
Poughkeepsie NY
I wouldn't argue with you on detail, I am just quibbling on cause and
effect.
The programs need to be protected from modification and are loaded into
protected storage. They need to be RENT to be able to run in that
storage. But the storage protection provides the security, not the RENT
attribute.
The RENT attribute is used as a signal to load a program (from an
authorized library) into protected storage but doesn't add extra
security itself.
--
Andrew Rowley
Black Hill Software
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