On 30/08/2021 11:59 am, CM Poncelet wrote:
The bottom line is that the integrity/security of a current OS cannot be
reduced to a lower integrity/security level by upgrading it to a new OS
- as e.g. upgrading OS/390 to z/OS could not result in z/OS then being
less secure than OS/390.
Hence the argument that the integrity/security provided by 'REUS, RENT,
REFR' in OS/390 does not apply to z/OS is absurd - as this would imply
that z/OS is less secure than OS/390.
I don't think REUS, RENT, REFR are intended to contribute to security at
all. All these attributes are is an indication of when a new copy of a
module needs to be loaded, and when an existing copy can be shared.
--
Andrew Rowley
Black Hill Software
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
