lkml.org 
[lkml]   [2000]   [Jul]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Does this help explain better?? ATA/IDE Thread
On Sat, 22 Jul 2000, TimO wrote:

> "H. Peter Anvin" wrote:
> >
> > Followup to: <Pine.LNX.4.10.10007212041090.15902-100000@master.linux-ide.org>
> > By author: Andre Hedrick <andre@linux-ide.org>
> > In newsgroup: linux.dev.kernel
> > >
> > > Everyone
> > >
> > > I am talking about attempting to invoke unknown vender specific commands
> > > They do comply with the SPEC but are not part of the SPEC.
> > > Since I do not have the priviledge of knowing these facts, but know they
> > > exist. You can not allow a rouge driver attempt to invoke these commands.
> > >
> >
> > A rogue driver can always do this by writing straight to the
> > interface. I think a more serious issue is: what about a *buggy*
> > drivers? However, what I am a bit unclear of is the following: will
> > this patch prevent me from writing a driver which issues legitimate
> > vendor-specific commands to control vendor-specific aspects of a
> > particular piece of hardware? If so, that would be a very bad thing.
> > However, if this patch is there to prevent buggy programs from issuing
> > known-to-be-damaging commands by accient, then that is a Good
> > Thing[TM].
>
> Vendor-specific commands would not be allowed through the kernel. A
> specific program for a specific vendor would have to use RAW_IO; ie
> for firmware upgrades.

NO. They can/will use RAW_IO *IF* this is available to them. If not, they
will have to provide a proper kernel driver for their hardware. I know
which I prefer...

> > I personally would have to agree with the people that say this isn't a
> > security issue, but I *do* believe that protecting buggy programs (we
> > never have any of those, right?) from causing permanent damage to the
> > hardware is a very useful thing.
>
> This is EXACTLY what Andre is trying to accomplish.

Yep - WTF is wrong with that?


James.


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:57    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site