CODEWITHSUNDEEP
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Mark Diaz
Mark Diaz

Reputation: 193

How to create a process permanent file from an application program

How can I create process permanent file (like DCL does) from an application executable (I happen to be coding in Fortran, but I suspect that's not important to the answer).

I would like to create/open the file in one EXE, then be able to access it from DCL or another EXE in the same procedure.

I have a general understanding of RMS internals, so answers with FAB or RAB structures will probably be understood. As a guess, SUPERVISOR mode is involved.

Upvotes: 0

Views: 80

Answers (1)

Hein
Hein

Reputation: 1463

Asked and answered. :-).

Note 870.1    How do you open process permanent files and channels        1 of 5
QUARK::LIONEL "Ad Astra"                              5 lines   1-JAN-1989 00:15
                          < PPFs only through CLIs >
--------------------------------------------------------------------------------

For question 1, the ONLY way to create a PPF is through a CLI such
as DCL.  The usual method is the DCL OPEN command.  From languages,
you can only open existing PPFs.

Nothing has changed since.

PPF are very restrictive ( minimal buffers, no global buffers, ...) and should be created BEFORE with DCL before a program tries to use it.

What problem are you really trying to solve?

Hein

Upvotes: 2

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