Messages in this thread | | | Date | Fri, 18 Jun 1999 18:00:12 -0700 (PDT) | From | Dan Hollis <> | Subject | Re: UUIDs (and devfs and major/minor numbers) |
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On 18 Jun 1999, david parsons wrote: > In a paranoid case (you're running a multiuser machine and you > know the world is out to get you, you certainly don't want new > devices to spring into life singing "Yoo hoo, sailors! I'm > Available!", so you set up the system to default new permissions > to nobody can touch them.
Indeed there are tricks that can be done with devfs eg each user could only see their devices in their namespace and noone elses. This would close some possible denial of service schemes
Also the kernel could handle resetting permissions and ownership on devices based on end-user defined rules. Thus closing some security holes due to timing attacks
-Dan
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