[jbglaw@lug-owl.de: Re: [PARPORT] generic parport support ...]

Jan-Benedict Glaw (jbglaw@lug-owl.de)
Tue, 4 Jan 2000 22:07:13 +0100

Hi *!

Sorry, forgot to post this to the list, too...

MfG, JBG 

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attached mail follows:

On Tue, Jan 04, 2000 at 08:50:08PM +0000, Tim Waugh wrote:
> On Tue, 4 Jan 2000, Jan-Benedict Glaw wrote:
> 
> > simply crashing by this. ...but unfortunately, you can't seek within a
> > character device with any other method than reading everythink up to
> > the requested position;(
> 
> What's wrong with using llseek?  Clearly reading everything below the
> desired port isn't right!

Can this be done from command line (eg. "dd" with skip=... etc)? I saw a 
lot of people (when I was a pupil some time ago) who bought easily buildable
inferfaces for their parport (resistor->transistor->relais...) and tried
to access it via dd (they never learned C or any usable programming language
at all) and _randomly_ crashed their system. So I tested and found the
problem in missing seeking capabilities. However, I think that /dev/ports
is quite oftenly used this way;(

MfG, JBG
PS: I finally showed them how to write "main" and "atoi"...

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Fehler eingestehen, Größe zeigen: Nehmt die Rechtschreibreform zurück!!!
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