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

From: Bogdan Costescu (bogdan.costescu@iwr.uni-heidelberg.de)
Date: Fri Jun 01 2001 - 08:03:25 EDT

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    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

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