Polyinstantiated /tmp

[Daniel J Walsh]

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On 10/31/2010 03:07 PM, Matt McCutchen wrote:
> On Wed, 2010-10-20 at 08:13 -0400, Daniel J Walsh wrote:
>> I have been trying to get system processes to stop using /tmp for years.
>>
>> http://danwalsh.livejournal.com/11467.html
>>
>> As some one who lives with polyinstatiated namespace /tmp,  The only
>> problem I know of now is handing of kerberos tickets.  Whenever a system
>> process (root) needs to communicate with a user via /tmp.  namespace
>> /tmp breaks it.  sssd can not create kerberos tickets in my /tmp and
>> gssd can not find my kerberos tickets in /tmp.  I believe the solution
>> to both is to move the tickets to be managed by sssd and leave /tmp to
>> users.
>>
>> BTW, X has solved this problem a couple of years ago by using virtual
>> namespace for its sockets.
> 
> In the abstract namespace, don't you have the same problem where if the
> real X server dies for any reason, other users can create a socket at
> the same path and mess with your applications?
> 
Yes although there, you can only create sockets.
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