> Ain't no "sides" on z/OS. "There is no wall", etc.
It took me a while to wrap my arms around that but it is true. It's an
important concept. There are only programs, and ways to invoke programs (shell,
JCL, etc.) and facilities (GETMAIN, accept(), etc.). The method of invocation
and the services available are largely independent of each other. It's all mix
and match.
There are some conditions (POSIX ON/OFF, LE environment, etc.) and gotchas but
basically it is all mix and match.
The system I am responsible for looks "on the outside" like an MVS program
written in 1990. It is a started task with PARM= and DD statements. If you look
at the source code it looks like a UNIX program (int main(int argc, char
*argv[]) { ...). Actually, it is a mix. It uses GETMAIN and IARV64 and examines
the TIOT ... but it also uses select(), socket() and printf().
Charles
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf
Of Tony Harminc
Sent: Wednesday, December 07, 2016 11:21 AM
To: [email protected]
Subject: Re: DDs in USS?
On 7 December 2016 at 14:14, Phil Smith III <[email protected]> wrote:
> The API doesn't care whether I'm in USS or on the MVS side, but it
> wants to find that DD in the TIOT.
>
Ain't no "sides" on z/OS. "There is no wall", etc.
Tony H.
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