Peter,

My issue with the exit was a user error ( mine ) we didnt copy and LLA
fresh the right library.
Scott

On Sun, Dec 1, 2019 at 10:22 AM Lennie Dymoke-Bradshaw <
lenni...@rsmpartners.com> wrote:

> I seem to recall there was another such pointer in the SMF structures and
> I thought the Nasty Wet Monster Bank used that. But maybe I am mixing
> things up. Could have been some other bank.
>
> These fields were great for local mods and I made extensive use of the
> CVTUSER field in the 1980s to hold flags,  settings and values (even whole
> tables) used by various exits which were used by multiple MVS installations
> I supported. I had code (and a change protocol) that could modify these in
> flight, thus altering the flow of control in exits and so on.
>
> The fields that Peter has described (Thank you Peter) are for vendors. If,
> in time passed, any Vendor made use of the CVTUSER field he could be sure
> he would upset many customers.
>
> Lennie Dymoke-Bradshaw | Security Lead | RSM Partners Ltd
> Web:              www.rsmpartners.com
> ‘Dance like no one is watching. Encrypt like everyone is.’
>
> -----Original Message-----
> From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf
> Of Rupert Reynolds
> Sent: 30 November 2019 16:40
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: [IBM-MAIN] WTO
>
> ahem! I meant to say CVTUSER, a very different field from CVTUSR :-)
>
> On Sat, 30 Nov 2019, 15:17 Rupert Reynolds, <rreyno...@cix.co.uk> wrote:
>
> > Whatever happened to CVTUSR? Back in the 1990s we used to have (from
> > memory) a started task that came up briefly during IPL and it
> > allocated storage (I forget what key, but read only in the general
> > case) for a vector table, pointed CVTUSR at that, and then it stopped
> itself.
> >
> > So if I was (say) at Nasty Wet Monster Bank, it would point CVTUSR at
> > the NMVT, which we could use for anything within reason.
> >
> > Ruz
> >
> > On Sat, 30 Nov 2019, 13:56 Peter Relson, <rel...@us.ibm.com> wrote:
> >
> >> Lennie wrote:
> >> <snip>
> >> Is this intended to be undocumented?
> >> Is there a published list of the existing assignments of those slots?
> >> </snip>
> >>
> >> To the first: it is documented. To the extent appropriate, that being
> >> commentary in the data area book and showing the fields as "PI".
> >> To the second: no.
> >>
> >> It is up to each ISV whether they want to make known what slot they
> >> are using (and up to them to document whatever they feel appropriate
> >> about such use).
> >>
> >> Peter Relson
> >> z/OS Core Technology Design
> >>
> >>
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> >>
> >
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-- 



*IDMWORKS *

Scott Ford

z/OS Dev.




“By elevating a friend or Collegue you elevate yourself, by demeaning a
friend or collegue you demean yourself”



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Blog: www.idmworks.com/blog





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