Speaking of ISAM doing interesting channel programming -- ISAM was implicated
in a very early VM security/integrity threat. Details elude me and I sadly
don't have the program which used ISAM to penetrate VM, but it was discussed in
this research
---
VM/370 security retrofit program
http://portal.acm.org/citation.cfm?id=1124634&dl=GUIDE&coll=GUIDE&CFID=67357903&CFTOKEN=73885624
the feasibility of adding a security kernel to VM/370 was studied and a kernel
..... such as those used by OS/360 ISAM. Certain VM/370 penetrations{l} ...
and
VM/370 Security Retrofit Program-Detailed Design and Implementation Phase
Authors: B. D. Gold; R. R. Linde; M. Schaefer; W. M. Shasberger; D. H.
Thompson; SYSTEM DEVELOPMENT CORP SANTA MONICA CA
Abstract: This report describes a design strategy for performing a retrofit to
IBM Corporation's Virtual Machine 370 (VM/370) system that will provide a time-
shared environment in which user processes bearing differing military
classification levels may be operated simultaneously without compromise to
military security. The strategy entails drawing together into a secure kernel
those system functions that may be exploited to violate security. This report
finalizes the results of the first two years of an ongoing research and
development program.
http://www.stormingmedia.us/61/6139/A613901.html
---
into creating a demonstrably secure VM. I experimented with KVM for a while at
Mitre.
Mike Myers said:
ISAM did some pretty interesting channel programming. It was back in the
late '60s and early '70s while teaching the internals of ISAM and BDAM
to Program Support Reps that I learned about self-modifying channel
programs (fun stuff).
--
Gabriel Goldberg, Computers and Publishing, Inc. (703) 204-0433
3401 Silver Maple Place, Falls Church, VA 22042 [email protected]
LinkedIn: http://www.linkedin.com/in/gabegold
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