Re: [ANNOUNCE] udev 021 release

[Dominik Kubla]

Greg KH wrote:
> On Thu, Mar 04, 2004 at 07:37:05AM +0100, Dominik Kubla wrote:
>
> > On Tue, Mar 02, 2004 at 04:09:57PM -0800, Greg KH wrote:
> >
> > > I've released the 021 version of udev.  It can be found at:
> > > 	kernel.org/pub/linux/utils/kernel/hotplug/udev-021.tar.gz
> >
> > Nice work, but  I ran into a problem  on my Debian system and  i did use
> > the udev-019 permissions file for  Debian. What's the story here anyway?
>
>
> Debian has a "official" package.  I recommend you use that if you have a
> Debian system.

Hmm. Yes, i just tried it, but i am not impressed.  Somebody tried very 
hard to make the resulting /dev look like devfs instead of following 
devices.txt... Especially unconditionally using tmpfs for /dev is a
bad idea if the user wants/needs to use ACLs.

So i'll continue to work from your sources.

> > I seem to be unable to assign group "cdrom" to my ATAPI DVD/CD-RW drive.
> > It appears to me that the permissions syntax is missing a possibility to
> > overide the owner/group based upon the class of the device.
>
>
> Permissions are based on the name of the device.

Oh, i realized that. But my point is: shouldn't they be based on the 
CLASS of the device rather than the name? After all the names are 
changeable, but the class is not...

I checked the hotplug-devel archives and saw that somebody has already
posted a patch doing that. So i guess the question boils down to:
Will you accept it or not?

> > Is there a way to distinguish between CD-ROM, DVD-ROM and writers? It is
> > not unusual  these days to  have at least a  DVD-ROM and CD-Writer  in a
> > desktop system. If you look at the  latest offers from Dell you will see
> > that they tend to include a DVD-ROM  and a DVD+RW drive in at least some
> > configurations. So  it would  be nice  if udev would  be able  to create
> > links like "cdwriter", "dvd" and "dvdwriter" out of the box. (And assign
> > the appropriate group to the device nodes...)
>
>
> You can do that, just name them differently based on the type of device.
> Also, try providing a symlink to "cdrom" to not break what users are
> expecting.

Would you care to explain how to do it?

TIA,
  Dominik
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