Re: permissions: udev vs. pam_devperm.so

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

On Tue, Oct 26, 2004 at 03:49:12PM +0200, Frank Steiner wrote:
> Kay Sievers wrote
> 
> 
> >I don't think that this will work, as there should be a remove event
> >before you get a new add event and the node will be deleted and recreated
> >without anything to preserve. You may check the inode number, it should
> >have changed.
> 
> Ok, I see... So, do you think it was possible to make sth. similar to
> pam_devperm? E.g., my /etc/logindevperms has a line
> 
>   :0 0600 /dev/dvd:/dev/dvd1:/dev/dvd2:/dev/dvd3
> 
> When a user logs in with kdm (/etc/pam.d/kdm defines using pam_devperm.so),
> /dev/dvd (i.e., the device this link points to, here: /dev/hdc) will be
> set to 600 and the user logging in will be the owner.
> Makes sense for a certain set of devices.
> 
> Maybe udev could use pam_devperm in a similar way? Or allow a special
> keyword like "console" as owner in the permissions file, setting the
> user who owns the console as owner of the device (and the default if
> no such user currently exists)? This way, devices added after the user
> has logged in, could be assigned to the locally logged-in user, too.

The problem is that every distribution has its own concept of "local" or
"console" users, so the best thing seems to call a distribution specific
permission-restore-script from dev.d/.

If this will not work for you, let us know and we will figure something
out.

Thanks,
Kay


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