Default local auth policy

[Daniel Stone]

On Fri, Mar 13, 2009 at 01:46:06PM -0400, Adam Jackson wrote:
> Currently, if you start X without -ac and without -auth, the default
> connection policy is to allow connections from localhost.  In
> particular, this means on every IPv[46] address, and any local
> transports including unix sockets.
> 
> I'd like to see a mode where the default policy is effectively
> +si:localuser:`id -un`, which would allow connections only from the uid
> that started the server.  This is effectively the policy everyone's
> trying to implement with xauth cookies, but cookies have to get stored
> on disk somewhere which sucks for NFS and r/o images, etc.  For the gdm
> case, the display manager would add the real user to the access list
> once they've been authed, and then remove itself and start the session
> as the user.
> 
> Normally I'd just change the default here, but I think this might be a
> significant enough difference in behaviour that you should have to ask
> for it.  So.  New -localuser option?  Change the default?  Bad idea,
> give up, take up farming?

Change the default, seriously.

Cheers,
Daniel
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