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SubjectRe: USB device allocation
David Weinehall wrote:
>
> On Tue, 5 Oct 1999, H. Peter Anvin wrote:
>
> > David Weinehall wrote:
> > >
> > > > That is one way of doing it; IMO a very good way because it lets you
> > > > have policy in user space.
> > >
> > > Oh? And what kind of image of how devfs does things do you have then?
> > >
> > > This is how devfs works. The kernel part of devfs informs devfsd of the
> > > changes (what devices need to be created/removed), and devfsd nicely
> > > carries out its chores. User-space policy and persistent access-rights are
> > > there for you.
> > >
> >
> > ... in which case you don't need devfs at all.
>
> And how will you inform the daemon that new devices need to be
> created/removed?
>

By a pipe or socket. Doing it via a filesystem is broken anyway, since
you need a message -- not a layout.

-hpa

--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!

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