Very Computer

by **Chris Sharma** » Sat, 03 Nov 2001 18:07:15

I've had a piece of kernel mode code that I've used for some years to set
account name (to "Dialup") for the accounting log.

This is the core of it:
movzbl (r7)+, r6

; jib$t_account ascii

movc5 r6, (r7), #^a" ", #jib$s_account, jib$t_account(r5)

; ctl$t_account ascii

movc5 r6, (r7), #^a" ", #ctl_acclen, g^ctl$t_account

1$: movl #1, r0
ret

It's worked fine on both VAX & Alpha for many years.
Now (new machine, VMS 7.3) it fills in the JIB, but ctl$t_account is
unchanged at image exit !!
And no, it doesn't crash either - I'd have noticed.
I tried relinking it, to no avail.
Any suggestions ?? Is it something to do with $persona services ?
Is there another field I need to fill in, or should I use the persona stuff
for a permanent (until logout) change ?

Thanks,
Chris

by **Larry Kilgall** » Sat, 03 Nov 2001 21:45:05

Quote:> I've had a piece of kernel mode code that I've used for some years to set
> account name (to "Dialup") for the accounting log.
> Now (new machine, VMS 7.3) it fills in the JIB, but ctl$t_account is
> unchanged at image exit !!
> Any suggestions ?? Is it something to do with $persona services ?

Absolutely. You really need to read the full description (start with
the V7.2 release notes) of Alpha kernel changes to implement per-thread
security.

When you think you have read it all, try HELP INSTALL ADD/ARB_SUPPORT .

by **Chris Sharma** » Sun, 04 Nov 2001 00:13:16

Thanks for that.
Documentation not all that clear, but it appears that all I need to do is
$persona_modify(0, ...);
No more kernel code - great !

Thanks, Chris Sharman

> > I've had a piece of kernel mode code that I've used for some years to
set
> > account name (to "Dialup") for the accounting log.

> > Now (new machine, VMS 7.3) it fills in the JIB, but ctl$t_account is
> > unchanged at image exit !!

> > Any suggestions ?? Is it something to do with $persona services ?

> Absolutely. You really need to read the full description (start with
> the V7.2 release notes) of Alpha kernel changes to implement per-thread
> security.

> When you think you have read it all, try HELP INSTALL ADD/ARB_SUPPORT .

by **Larry Kilgall** » Sun, 04 Nov 2001 00:19:49

Quote:> Thanks for that.
> Documentation not all that clear, but it appears that all I need to do is
> $persona_modify(0, ...);

Of course that requires privilege (IMPERSONATE ?).

Quote:> No more kernel code - great !

But you formerly were using CMKRNL :-)

Very Computer

set account for accounting log purposes

set account for accounting log purposes

set account for accounting log purposes

set account for accounting log purposes

set account for accounting log purposes