Re: CD writing in future Linux (stirring up a hornets' nest)

[Joerg Schilling <schilling@fokus.fraunhofer.de>]

Jan Engelhardt <jengelh@linux01.gwdg.de> wrote:


> Right. The question was rather like this:
> Say we have our non-stable /dev/sr0 mapping to /dev/sg0, and it has got BTL 
> 1,1,0. Now, if the user starts `cdrecord -dev=1,1,0`,
> `ls -l /proc/$(pidof -s cdrecord)/fd/` should show (and in fact did when I 
> used ide-scsi back then) /dev/sg0, right?
>
> If so, what's wrong with just opening /dev/sg0 directly (as per user 
> request, i.e. cdrecord -dev=/dev/sg0) and sending the scsi commands down 
> the fd?

As I did write _many_ times, this was done by the program "cdwrite" on Linux
in 1995 and as cdwrite did not check whether if actually got a CD writer,
cdwrite did destroy many hard disk drives just _because_ the /dev/sg* 
is non-stable.

People did not believe this and did write shell scripts with e.g. /dev/sg0 
inside and later suffered from the non-stable /dev/sg* <-> device relation.


Jörg

-- 
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