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Date:      Mon, 16 Feb 1998 19:18:57 -0700
From:      Nate Williams <nate@mt.sri.com>
To:        Julian Elischer <julian@whistle.com>
Cc:        current@FreeBSD.ORG
Subject:   Re: devfs persistence 
Message-ID:  <199802170218.TAA26553@mt.sri.com>
In-Reply-To: <Pine.BSF.3.95.980216153712.8949V-100000@current1.whistle.com>
References:  <199802162241.PAA00744@pluto.plutotech.com> <Pine.BSF.3.95.980216153712.8949V-100000@current1.whistle.com>

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> > >> I would say that 99.99% of our user community never modifies the 
> > >> permissions from the default that MAKEDEV creates.  They seem to be
> > >> able to use their devices just fine.
> 
> I'd say it's 1% who actually want the permissions to STICK.

I think you'd be sadly mistaken.  I think it's probably more like 10-20%
of the users who modify at least *one* /dev entry on their system.
Maybe more than that.

> > >Sure, and I was never proposing that the default state would, or 
> > >should, be insecure.  My point was simply that you are suggesting that 
> > >there should be *no* configurable policy for new nodes.  This is 
> > >inferior to the current methodology, and unacceptable to more than a 
> > >few people.
> 
> The trouble with new nodes is that you really can't predict REALLY new
> nodes. No matter WHAT the mechanism.

Sure you can.  No new nodes are going to show up on devices you have no
driver for, and I certainly hope new kernels aren't built w/out any
attention to what's put in them.

> > Embedded systems should directly modify the kernel source to get the
> > default permissions the way they want.  I don't buy the inefficiency
> > argument either.  Device arrival events should be rare.  How often do
> > you expect them to happen?  Once a second is still a relative eternity
> > between arrivals.
> 
> embedded systes probably don't have arriving devices at all.

Not true.  Think 'small' package PCMCIA/CardBus machines.  I know of
quite a few 'embedded' systems using laptops right now.  Being able to
hot-swap out a hard-drive and/or ethernet card or whatever is a big
draw.



Nate

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