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List:       suse-linux-e
Subject:    Re: [SLE] How to prevent audio device change owner after normal
From:       Rocky Zhang <rocky () userful ! com>
Date:       2005-03-07 20:04:34
Message-ID: 1110225874.7954.21.camel () norma ! userful ! ca
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Hi Anders,

Yes. It does work! I prefer to modify permission from 0600 to 0660.

Thanks.

Rocky


On Mon, 2005-03-07 at 19:57 +0000, Anders Johansson wrote:
> On Monday 07 March 2005 19:51, Rocky Zhang wrote:
> > Hi,
> >
> > I have a computer running with SuSe 9.1, KDE desktop. And I connected 2
> > USB audio headsets to my computer. I found that before user log in, the
> > audio devices (such as /dev/dsp*, /dev/snd/*) owner is root:audio,
> > permission is 660; After one user log in, all the audio device files
> > change owner to $USER:audio, permission change to 600, so another users
> > can't have permission to use the USB headset.  How can I prevent it
> > ( keep audio device owner always root, and permission is 660, no matter
> > user login or not)?
> >
> > I know in Fedora Core 2/3 and Mandrake 10.1, it's a configuration file
> > ( /etc/security/console.perms) , which is included in pam RPM,
> > that you can edit to prevent normal session login change audio device
> > owner.  I checked my SuSe ( version 9.1), there does have  pam-0.77-221
> > RPM there, but there is no such file (/etc/security/console.perms)
> > included in the RPM. How does SuSe control device owner and permission
> > when normal session log in which are controlled by PAM and console.perms
> > configuration file in other Linux Distribution?
> 
> The permissions are controlled by the file /etc/logindevperm where you can 
> control in detail which files get chown()ed, and if you want to stop the 
> chown()ing altogether remove the line "session required pam_devperm.so" from 
> the files /etc/pam.d/xdm and /etc/pam.d/xdm-np
> 



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