Re: sync deputy and remote before processing request

On Tue, Aug 01, 2006 at 04:49:38PM +0200, Stephan Schmid wrote:
> I made a patch that makes deputy and remote sync if they issue both a 
> request. The request of remote is processed first.
> Before returning to usermode remote should process the request of deputy, 
> which issues the request again.
> This should happen in remote_pre_usermode, but I think the request hasnt 
> yet arrived on remote when it is executed.

Hi Stephan,

The whole thing seems to be solving one of the problem that kcomd will
solve. i.e. trying to solve the mess of the current state machine that
is not really complete.

I think investing effort in kcomd is much better, since it will be able
to provide all the race-protection in a central place and will
simplify a lot some functions. (hopefully)

> I there a technique to suspend the remote process until something comes 
> through the connection ?

Doing a recv on the socket should do the job.

apart from that, you can reuse the same om_req structure for a send &
recv.

and this:
if (err < 0) xxx;

should be:
if (err < 0)
	xxx;

that isn't *that* bad since it "hide" more the error path, but I'ld
rather have them at a newline.

-- 
Vincent Hanquez

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