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From: TWADE@CSVAX.UCD.HEA.IRL.UUCP
Newsgroups: comp.os.vms
Subject: CHANGING PRIORITY.
Message-ID: <8706200330.AA07249@ucbvax.Berkeley.EDU>
Date: Fri, 19-Jun-87 23:30:52 EDT
Article-I.D.: ucbvax.8706200330.AA07249
Posted: Fri Jun 19 23:30:52 1987
Date-Received: Sun, 21-Jun-87 00:44:04 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 19

>Is their a way to set a process priority limit downward such that
>the user can't set it back? The documentation for SET PROCESS/PRIORITY
>and SYS$SETPRI seem to be misleading. It suggests that the user can't
>set the base priority higher than the existing base priority when in
>fact they can set it back to the former (uaf specified) value. It looks
>like I would have to poke around in a system data structure; does anyone
>know how to do it? Thanks.

You could, after lowering the priority, run a program which calls $GETJPI
to ascertain the caller's username and then call $SETUAI to lower the
authorized priority. The program would have to be installed with the
required privilege to modify the SYSUAF.
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Tom Wade                        Bitnet:         twade@csvax.ucd.hea.irl
Systems Programmer              Ean:            twade@csvax.ucd.irl
Dept Computer Science           PSI:            PSI%+27243154000721::TWADE
University College Dublin       Telex:          (0500) 91196 UCD EI
Ireland.                        Voice:          +353-1-693244 Ext 2472
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