Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!cs.utexas.edu!romp!rancor!bob
From: bob@rancor.UUCP (Bob Willcox)
Newsgroups: comp.unix.sysv386
Subject: Re: BRUMBY 8-port vs ESIX security bug patch
Message-ID: <297@rancor.UUCP>
Date: 26 Mar 91 00:33:50 GMT
References: <295@rancor.UUCP>
Organization: Bob's Place, Austin TX
Lines: 24

In article <295@rancor.UUCP> bob@rancor.UUCP I wrote:
>I believe I have discovered an incompatibility between the ESIX patch
>for the u_block security bug and my BRUMBY 8-Port device driver.
   etc...

Well, now for the good news!  After talking with Debbie at Stallion's
(makers of the BRUMBY card) technical support she directed me to the
/etc/conf/pack.d/kernel/space.c file (which was replaced by the
patch).  In this file is a structure which defines the tty line
disciplines (linesw) which installation of the BRUMBY device driver
modifies by adding a fourth line discipline.  Unfortunately,
installation of the patch from ESIX replaces this file with one that no
longer contains the necessary (for the BRUMBY card) line discipline.  A
simple manual edit of the new space.c file to include their two lines
(they are both flagged with a comment containing the three characters
"ATA") that had been in the old one and a rebuilding of the kernel has
fixed the problem.

Note that the patch appears to be working as it should (the test
program now memory faults).

-- 
Bob Willcox             ...!{rutgers|ames}!cs.utexas.edu!romp!rancor!bob
Phone: 512 258-4224