As stated previously I like DEVFS, but this is one thing I'm not too
crazy about either... something about this method of saving state at
shutdown time seems un-Unixish to me.
What I'd rather do is to simply keep a file that lists those devices
that I want to have other than default permissions and have them set
from this file at boot time. To change the permissions of a device
permanently, edit this file and run a script that "applies" it. The
config file (/dev/dev.conf or something) might be able to use regexes
to match devices.
In either case to be safe changing permissions is a two-step process,
since you have to execute the "save" procedure manually now after
changing permissions to be sure they stay changed if the system
crashes (oh, yeah, I know Linux /almost/ never crashes, but for a
sysadmin of mission-critical systems almost isn't good enough ;-).
Anyhow, this seems like a relatively minor point.
--
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