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SubjectRe: ide-cd problems
Jens Axboe <> wrote:
> On Fri, Aug 06 2004, Alan Cox wrote:
> > default:
> > if(capable(CAP_SYS_RAWIO))
> > /* Only administrators get to do arbitary things */
> That's the case I don't agree with, and why I didn't like the idea
> originally. That suddenly requires a patching of the kernel because of
> new commands in new devices. Like when dvd readers became common, you
> can't just require people to update their kernel because a few new
> commands are needed to drive them from user space.

The problem is that what if one of the new commands is IGNITE_PLATTER?
Unknown commands can do anything, are therefore extremely dangerous, and
should be restricted.

Charles Cazabon <>
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