Cedric Le Goater wrote:
> Dan Smith wrote:
>> SH> (Note that in Dan's next version, he did move unshare into
>> SH> userspace)
>>
>> The idealist in me still wants it to be in the kernel.  However, after
>> seeing it done I agree that it's the right thing to do, at least in
>> this case.
> 
> I would say in all cases.
> 
> as you can't unshare(CLONE_NEWPID), 

Eric,

Is there a particular reason the above doesn't work?  I made an attempt 
to implement it a while back, but haven't convinced myself that signals 
and re-attaching a new struct pid to a running task is correct.

This should apply on top of Oren's ckpt v13 (based on 2.6.27-rc8). 
Consider this me floating the idea of adding support and I'll clean it 
up/rebase if you think it's useful.

Mike Waychison