Date: Sun, 15 Mar 1998 18:12:16 -0500 (EST) From: Robert Watson <robert@cyrus.watson.org> To: Mike Smith <mike@smith.net.au> Cc: Cy Schubert - ITSD Open Systems Group <cschuber@uumail.gov.bc.ca>, gkshenaut@ucdavis.edu, stable@FreeBSD.ORG Subject: Re: DEVFS (was Re: More problems with new slice code ) Message-ID: <Pine.BSF.3.96.980315180626.3601D-100000@trojanhorse.pr.watson.org> In-Reply-To: <199803152242.OAA12236@dingo.cdrom.com>
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On Sun, 15 Mar 1998, Mike Smith wrote: > > Will it still be possible to create/use device nodes with mknod, etc, > > elsewhere in the file system? > > No. The whole 'major/minor' number concept will ultimately be phased > out, and device identifiers will be dynamically assigned. This > basically makes static device nodes unuseful. > > Having said that, it will indeed be possible to have device nodes > appear in more than one place, and have different permissions etc. in > those separate places, which is I think what you are getting at > (chrooted environments, etc.) This is, indeed, what I had in mind -- it might be desirable to have a chroot'd daemon have access to a device. I was also wondering about NFS-exported devices, but with a devfs that is not really an issue. > If you're interested in getting a taste of this (and providing valuable > feedback early in the picture), there are patches for -current which > impement large portions of this already. See > http://www.freebsd.org/~julian for more. I may give that a try on one of our -current test machines in a week or so -- the -current Coda port is underway, and seeing how /dev/cfs0 (the coda device for Vice<->Kernel communication) behaves dynamically would be useful. Thanks for the information; this sounds like a great feature for reducing administrative load and preventing nasties :). Robert N Watson Carnegie Mellon University http://www.cmu.edu/ SafePort Network Services http://www.safeport.com/ robert@fledge.watson.org http://www.watson.org/~robert/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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