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Re: ownership of target of /dev/cdroms/cdroms0 in devfs

To: Russell Coker <russell@xxxxxxxxxxxx>
Subject: Re: ownership of target of /dev/cdroms/cdroms0 in devfs
From: Richard Gooch <rgooch@xxxxxxxxxxxxxxx>
Date: Sun, 16 Sep 2001 19:53:56 -0400
Cc: Alex Bowley <alex.bowley@xxxxxxxxxxxxxx>, devfs@xxxxxxxxxxx, debian-user@xxxxxxxxxxxxxxxx
In-reply-to: <20010905203303.A428A34F1F@xxxxxxxxxxxxxxxxx>
References: <20010904171036.B571@xxxxxxxxxxxxxxxxx> <200109041537.f84Fbbu05192@xxxxxxxxxxxxxxxxxxxxxxxx> <20010905203303.A428A34F1F@xxxxxxxxxxxxxxxxx>
Sender: owner-devfs@xxxxxxxxxxx
Russell Coker writes:
[...]
> Also any permissions related configuration directives in
> /etc/devfs/conf.d/* will over-ride /etc/devfs/perms (so there's no
> real need to comment anything out of /etc/devfs/perms unless you are
> making permissions more restrictive and want to avoid race
> conditions).

What race conditions are you referring to? Filesystem access to
entries is blocked until devfsd has finished processing all pending
events. So no process can ever see an intermediate state. Only devfsd
and it's children can bypass this block.

                                Regards,

                                        Richard....
Permanent: rgooch@xxxxxxxxxxxxx
Current:   rgooch@xxxxxxxxxxxxxxx

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