Re: Determining file attributes *before* OPEN

Thanks John. Somehow I missed OBTAIN when I was browsing that manual.

RDJFCB with an X'13' EXLST entry will return the first few volume serial
numbers assigned to the dataset, so RDJFCB and OBTAIN would seem to be
the way to go.

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@xxxxxxxxxxx] On
Behalf Of John McKown
Sent: Tuesday, October 07, 2008 12:24 PM
To: IBM-MAIN@xxxxxxxxxxx
Subject: Re: Determining file attributes *before* OPEN

Look at the OBTAIN macro for DASD resident datasets.


http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/DGT2S341/1.3.
2

You'll need to get the volser that the dataset is on. If you simply
have a
DD, the RDJFCB will get the DSN. You'd then need to do a catalog
lookup to
find the volser. I'd use the newest IGGCSI00 interface to do that
instead
of the old way (which I can't even remember what it is called -
LOCATE?)


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