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    Subject[OFFTOPIC] Re: /dev/nvram on my Celebris
    On Thu, 26 Nov 1998, Neil Conway wrote:

    > On this (bios destruction by rogue root) thread, someone already
    > suggested that a reboot wasn't necessary.
    >
    > This presumably means using ioperm() etc. but I guess this would only
    > work if the BIOS reflash was controlled by I/O and not by memory map (or
    > both).

    It doesn't matter. Chose one of these:

    /proc/kcore
    /dev/mem
    /dev/kmem
    /dev/port

    If they don't exist create the /dev files with mknod, or do

    # ismod destroy_bios.o

    and run arbitrary code in kernel mode.

    This is just a sampling, there are plenty of other ways. Root can do
    anything, there is no way around it, get this into you head ;-)

    Rafael


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