On Friday, 02/17/2017 at 10:19 GMT, Timothy Sipples <[email protected]> wrote: > FYI, z/VM 6.4 already includes select components derived from z/OS 2.2. > That's no secret because IBM just told the world that fact in the z/VM 6.4 > announcement letter. Alan could probably tell you more (if he's > allowed :-)), but my understanding (just reading what IBM has written) is > that z/VM's z/OS-derived components support certain z/VM elements and > features using common, battle tested codebases. One notable example is > z/VM's LDAP client and server feature. The z/OS-derived components are > really for z/VM's own use. However, perhaps z/VM's preexisting z/OS-derived > components would interest you, and perhaps IBM would be interested in > helping support whatever project you have in mind. No guarantees, of > course, but it doesn't hurt to ask.
It's more than that, Tim, and it's no secret. The LDAP client and server, MPROUTE daemon, System SSL (used in the SSL servers), gskkyman, and the program management binder are z/OS program objects running on CMS, not ports. This is done so that we don't fork the source and duplicate the build environment. I.e. it's a development and service process thing. But it's only doable when the program is structured in a way that keeps invocation of non-POSIX services in a separate entry point. The binder is a powerful tool for manipulating program objects and performing microsurgery on CSECTs. When the anesthetic wears off and the program wakes up, it doesn't realize that some of its parts have been replaced. Alan Altmark Senior Managing z/VM and Linux Consultant Lab Services System z Delivery Practice IBM Systems & Technology Group ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 [email protected] IBM Endicott ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
