Date: Wed, 21 Oct 1998 13:51:26 -0600 (MDT) From: "Kenneth D. Merry" <ken@plutotech.com> To: jeff-ml@mountin.net (Jeffrey J. Mountin) Cc: freebsd-current@FreeBSD.ORG Subject: Re: 3.0 missing some docs? Message-ID: <199810211951.NAA11348@panzer.plutotech.com> In-Reply-To: <3.0.3.32.19981021142537.00fe1ff4@207.227.119.2> from "Jeffrey J. Mountin" at "Oct 21, 98 02:25:37 pm"
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Jeffrey J. Mountin wrote...
> At 10:46 AM 10/21/98 -0600, Kenneth D. Merry wrote:
> >Actually, it isn't required. It's highly recommended, but optional. Some
> >folks might want to disable it for security reasons.
>
> There or not everything works. Don't understand the security part.
> However the man page does make reference, but:
>
> ls /dev/pa*
> crw------- 1 root operator 31, 0 Oct 17 22:58 /dev/pass0
> crw------- 1 root operator 31, 1 Oct 17 22:58 /dev/pass1
> crw------- 1 root operator 31, 2 Oct 17 22:58 /dev/pass2
> crw------- 1 root operator 31, 3 Oct 17 22:58 /dev/pass3
>
> How can userland?
How can userland ....what?
If someone cracks root, they can wreak havoc with the passthrough driver.
The disks have the same problem. e.g.:
dd if=/dev/zero of=/dev/rda0s1a count=50 bs=1024k
The stuff about permissions in the pass(4) man page is basically to warn
system administrators that granting regular users access to the pass driver
can be potentially dangerous. (just like granting access to disk device
nodes can be dangerous)
[ ... ]
> >If you're looking for documentation on the passthrough driver, RTFM. ("man
> >pass")
>
> Don't believe I have a need to tinker with CAM, being transparent for the
> most part, AFAIC. Was thinking more along the lines of whitepaper.
http://www.freebsd.org/~gibbs/
> RTFM'ing man pages isn't fun, since references scatter one to the 4 winds.
That's the way it goes.
[ ... ]
> Somewhat related to what I started here is DPT card support. I've seen
> plenty of references to the 3334 cards, but from the "CD"
>
> HARDWARE.TXT:dpt n/a n/a n/a n/a DPT RAID SCSI
> controllers.
> RELNOTES.TXT:DPT SCSI/RAID controllers (most variants).
>
> Wondering about 2044/2144 support? Plan to use the 3334 for a few servers
> in the near future, but for home use a 2044 ($200) is sufficient. "Most
> variants" means "no test drive method for me, thank you." Rather know
> before buying or else it would be good for NT (bleh!). This should be more
> clear, after all there are not that many models. Checked in the sources
> and there is no reference for any model number, not suprising.
RTFM ("man dpt").
Ken
--
Kenneth Merry
ken@plutotech.com
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