Re: udev: remove permissions file from udev

[Kay Sievers <kay.sievers@vrfy.org>]

On Mon, 2004-12-20 at 11:13 -0600, Lindsay Haisley wrote:
> Thus spake Kay Sievers on Mon, Dec 20, 2004 at 07:36:51AM CST
> > Just an example how nice the permissions application can work now. The
> > following line applies the "disk" group ownership to all block devices
> > not catched by an earlier explicit rule.
> > There is no longer the need to catch all the different node names of a
> > device class.
> > 
> > --- a/etc/udev/gentoo/udev.rules        2004-12-20 14:24:22 +01:00
> > +++ b/etc/udev/gentoo/udev.rules        2004-12-20 14:24:22 +01:00
> > @@ -207,6 +207,9 @@
> >  # rem_ide devices
> >  KERNEL="microdrive*",	NAME="%k", GROUP="disk"
> >  
> > +# all block devices
> > +SUBSYSTEM="block",	NAME="%k", GROUP="disk"
> > +
> >  # kbd devices
> >  KERNEL="kbd",		NAME="%k", MODE="0664"
> 
> If it hasn't been done, I'm going to lobby once again for the inclusion in
> udev of a utility which will will parse the sysfs tree for acceptable values
> for KERNEL and spit out copy 'n paste lines which are acceptable in a rules
> file, much the way udevinfo does for SYSFS{*} terms.  I corresponded with
> Greg KH on this a while back and he suggested a simple shell script for
> this, which I tweaked a bit and reposted.  Such as script could also show
> acceptable values for SUBSYSTEM.  If it hasn't been done, and I get a moment
> after the 1st of the year, I'll work on something and post it.

Hmm, I don't know if this is really useful, as sysfs has well defined
filenames you can list that with just "ls -1 /sys/class /sys/bus", which
will print all possible subsystems (besides block).

It's different from the sysfs _values_ which may be vendor defined and
contain odd whitespaces and similar. That's why we have the udevinfo
print.

udevinfo already prints BUS= and ID= so you may add the KERNEL=,
DRIVER=, SUBSYSTEM= keys there if you think that is useful.

Thanks,
Kay




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