Re: [fuse-devel] FUSE and X11

[Fareha S. <fa...@ee...>]

I tried that and it still fails. The connection is refused so it never 
gets to the authorization part.
At the moment I am just working with fusexmp so that I can pinpoint the 
problem without using a more complex fuse file system.

Thanks.

Phil Snowberger wrote:
> On Wed, Mar 28, 2007 at 01:15:39PM -0400, Fareha Shafique wrote:
>   
>> I was wondering how fuse deals with applications that use X11. I am 
>> asking because I have installed Ubuntu 6.06 - Dapper Drake, and I am 
>> unable to launch any applications that use X11. For example when I try 
>> xterm I get the error: "/usr/bin/xterm Xt error: Can't open display: :0.0
>> When i try to run firefox I get the error: "(firefox-bin:17259): 
>> Gtk-WARNING **: cannot open display:"
>>
>> I'm completely lost as to why this is happening. Any help would be 
>> appreciated.
>>     
>
> X servers have various types of authorization mechanisms to keep random
> people from connecting to them.  This is a good thing because once
> connected to an X server, you can read all the keystrokes sent to every
> window on that server (see the output of the 'xev' program sometime).
>
> I suspect that when inside your filesystem, for some reason, the user
> does not have access to the ~/.Xauthority file?  This file (usually)
> contains a "magic cookie" that matches the one the X server generated
> when it was started, and it is necessary to present this magic cookie to
> the server when connecting.
>
> If your server is on a LAN or you don't care too much about security,
> try this:  in an xterm outside your filesystem (or however you can get a
> terminal inside the X server), run "xhost +localhost", and then try
> starting an xterm from inside your filesystem again.  This turns on
> host-based X authorization, but only allows people to connect to your
> display from localhost.  
>
> I think that this will allow any user who has an account on your machine
> to connect to it, so once you're done with the above, don't forget to do
> "xhost -" (turn off host-based authorization), or your display will be
> open to anybody on the local machine.
>
> hth,
> --Phil
>
>