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From: Frank Steiner <fsteiner-mail@bio.ifi.lmu.de>
To: linux-hotplug@vger.kernel.org
Subject: Re: permissions: udev vs. pam_devperm.so
Date: Tue, 26 Oct 2004 13:49:12 +0000	[thread overview]
Message-ID: <417E55D8.7030406@bio.ifi.lmu.de> (raw)
In-Reply-To: <417DF0A8.2060108@bio.ifi.lmu.de>

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.

cu,
Frank

-- 
Dipl.-Inform. Frank Steiner   Web:  http://www.bio.ifi.lmu.de/~steiner/
Lehrstuhl f. Bioinformatik    Mail: http://www.bio.ifi.lmu.de/~steiner/m/
LMU, Amalienstr. 17           Phone: +49 89 2180-4049
80333 Muenchen, Germany       Fax:   +49 89 2180-99-4049
* Rekursion kann man erst verstehen, wenn man Rekursion verstanden hat. *


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  parent reply	other threads:[~2004-10-26 13:49 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-26  6:37 permissions: udev vs. pam_devperm.so Frank Steiner
2004-10-26 12:25 ` Kay Sievers
2004-10-26 12:30 ` Frank Steiner
2004-10-26 13:16 ` Kay Sievers
2004-10-26 13:20 ` Frank Steiner
2004-10-26 13:49 ` Frank Steiner [this message]
2004-10-26 14:47 ` Kay Sievers
2004-10-26 14:57 ` Kay Sievers
2004-10-27  0:02 ` Kay Sievers
2004-10-27  5:59 ` Frank Steiner

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