Re: question: pid space semantics.
From: Eric W. Biederman
Date: Tue Mar 14 2006 - 15:20:17 EST
Dave Hansen <haveblue@xxxxxxxxxx> writes:
> On Tue, 2006-03-14 at 11:43 -0700, Eric W. Biederman wrote:
>> The question:
>> If we could add additional pid values in different pid spaces to a
>> process with a syscall upon demand would that lead to an
>> implementation everyone could use?
>
> So, you'd basically only allocate the cross-namespace pids when you
> needed to do some kind of cross-namespace management?
Yes, or setup a parent/child relationship. So I think the first
process in a container would always get two pids.
> pid_t alloc_local_pid(container_handle, pid_t pid_inside_container)
That is the idea.
I actually expect the implementation to look very much different.
To me the nice piece of this concept is that it allows all pids
to local to a pid space while still be able to talk to remote
processes.
Eric
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