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SubjectRe: UUIDs (and devfs and major/minor numbers)
Dan Hollis wrote:
> On Thu, 17 Jun 1999, H. Peter Anvin wrote:
> > Dan Hollis wrote:
> > > On 18 Jun 1999, H. Peter Anvin wrote:
> > > > Actually, there is. The /dev directory is a mapping table between the
> > > > kernel interface (as well as providing a store for permissions), and
> > > > devfs removes this.
> > > This is not as useful or important as you try to make it out to be.
> > Useful to whom? (Not you, I gather.)
> If you start playing around with device names, expect severe application
> breakage.
> Or maybe you have some interesting justification to start renaming
> /dev/tty* into other things?
> Or lets rename /dev/null on a whim and see how useful that is.
> -Dan

You totally don't get it, do you? First of all, there is the
permissions issue. Second of all, say I have a device called, say
/dev/keyboard. Now I want to simulate keyboard input with a user-space
process, or redirect the keyboard input from say, a serial port. That's
what a level of indirection is for.


"The user's computer downloads the ActiveX code and simulates a 'Blue
Screen' crash, a generally benign event most users are familiar with
and that would not necessarily arouse suspicions."
-- Security exploit description on

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