Re: [PATCH] support for Cobalt Networks (x86 only) systems (for real this time)

Bogdan Costescu
2001-06-01T12:04:00Z

On Fri, 1 Jun 2001, Pete Zaitcev wrote:

> > But, each time a user cats this proc file, the user is banging the
> > hardware. What happens when a malicious user forks off 100 processes to
> > continually cat this file? :)
>
> Nothing good, probably. Same story as /proc/apm, which only
> hits BIOS instead (and it's debateable what is better).

Hmm, the MII related ioctl's in some net drivers (checked for 3c59x,
tulip, eepro100) are also querying the hardware. And a user is allowed to
ask for this info (but not able to modify it).

Sincerely,

Bogdan Costescu

IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu@IWR.Uni-Heidelberg.De