On Sat, 19 Nov 2016 08:30:39 -0500, Peter Relson wrote:
>
>I assume that the subject of this thread should have been "Which data set 
>in the STEPLIB concatenation is not APF-authorized".
>
Me, too.  And if that information were available the adress space could
remain authorized as long as modules were loaded only from authorized
catenands, and the failure of authorization could report "which data set",
at least by catenand ordinal.

>The DEB is build during OPEN. That processing examines the APF status of 
>every individual data set forming the concatenation. If any data set is 
>found that is not APF-authorized, then the DEB is marked as not APF 
>authorized (bit DEBAPFIN). (I think the bit is initialized "on" and then 
>simply turned off when a non-APF-authorized data set is found). By the 
>time "load" is being done, the information about an individual data set is 
>long gone.
>
I'll accept that as almost true.  But BLDL (I assume LOAD uses 
that or something similar) needs to find the directories to
search.  I'm trying to RTRM and understand.  I guess it can
examine DEBAMLNG bytes in DEBEXTNM to find the first extent
of each catenand which must contain the directory.

But that's not enough to really identify the data set; only
unit and address.  Bummer.  The pain customers endure
because storage was so expensive a half-century ago that
32 bytes couldn't be spared for flags indicating which
extents belong to authorized data sets.

>CSVAPF is the programming interface for querying if an individual data set 
>is APF-authorized. To do it completely correctly,  you have to know if the 
>data set is SMS-managed.
>
I've seen the SMS dependency mentioned earlier in this thread.
Why?  is it that APF is indicated in the DSCB for non-SMS and
elsewhere for SMS?

And I found nothing in the DEB about PDSE or UNIX files although BPAM
now supports UNIX directories in mixed concatenations.  How are those
represented?  Major and minor device numbers?  It must be documented
somewhere, even if only "The following N bytes are not GUPI."

Hmmm.  If I were to ALLOCATE a UNIX directory with DSORG=PS,
RECFM-F,LRECL=256; could I read it as a PDS directory?

-- gil

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