Messages in this thread | | | Date | Fri, 10 Feb 2006 14:13:50 +0100 (MET) | From | Jan Engelhardt <> | Subject | Re: CD writing in future Linux (stirring up a hornets' nest) |
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>> 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. > Exactly. But, if I now say -dev=1,1,0 instead of e.g. -dev=/dev/sg0, who or what makes sure that 1,1,0 {is not | does not map to} a harddisk?
Jan Engelhardt -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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