[Nix-dev] The X unix socket

[Tony White]

On 11 March 2010 07:56, Lluís Batlle <viriketo at gmail.com> wrote:
> I tried, and any other users in my nixos can spawn windows in my
> server, only setting DISPLAY=:0.
>
> Maybe we have something wrong for xauth, the magic auth string, or
> things like that?
>
> Regards,
> Lluís.
>
> 2010/3/11 Steve Roggenkamp <roggenkamps at acm.org>:
>> This is the same as my Debian installation.
>>
>> This is actually a UNIX socket the X Windows server uses for interprocess
>> communication.  The socket is owned by the X windows server which runs as
>> root since it has to control the display device.  The permissions allow an
>> arbitrary client to connect with the X Windows server.
>>
>> I think this is how all Linux have X Windows configured, or at least my
>> Debian and Ubuntu installations.
>>
>> I'm thinking you would have to change the Xorg code to change the
>> permissions since this socket gets opened when the Xorg server starts.  Then
>> I suppose you could create a group that would be allowed to communicate with
>> the socket.  I've not done that much coding with UNIX sockets, so I'd have
>> to do some research to know whether this would even be feasible.
>>
>> Hope this makes sense.
>>
>> Steve
>>
>> Lluís Batlle wrote:
>>
>> Hello,
>>
>> using kdm, I found this:
>> $ ls -l /tmp/.X11-unix/X0
>> srwxrwxrwx 1 root root 0  7 mar 21:51 /tmp/.X11-unix/X0
>>
>> I don't like those permissions much. Can anyone suggest a better way
>> to handle that in nixos? Why it has permissions 777 and ownership
>> rooot?
>>
>> Regards,
>> Lluís.
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Hi all,
Rootless X is possible but your prerequisite is a KMS capable driver :
http://lists.x.org/archives/xorg-devel/2009-July/001293.html
So it it wouldn't work of everyone at this time.

Thanks,
Tony