Re: ANNOUNCE: /dev/bios - flash rom bios driver

Dave Cinege (dcinege@psychosis.com)
Wed, 11 Feb 98 20:26:02 -0500


On Wed, 11 Feb 1998 10:12:48 +0100, Dr. Werner Fink wrote:

>
>> As a solution I tried to write some Linux software which is able to do
>> the same fine thing. The BIOS is in some way a piece of hardware and
>> it's very sensitive. So I decided to write a kernel driver that contains
>> the neccessary information to read/write those flashchips. Userland
>> programs that stop multitasking to prevent bios write failures are
>> undiscussable in my opion.
>>
>> With this driver it's possible to do things like
>>
>> dd if=/bios.bin of=/dev/bios bs=128k count=1
>
>Hmmmm ... does
>
> dd if=/dev/bios of=/boot/bios.bak
>
>also work?
>
>What's about mistakes? This interface is very easy and
>therefore it _is_ very dangerous, isn't it?

I do think
chmod 300 /dev/bios
woudl be a good idea.

of course cat >/dev/hda is nearly as deadly.
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