Re: Alternative to bootstrap_register?
Re: Alternative to bootstrap_register?
- Subject: Re: Alternative to bootstrap_register?
- From: Godfrey van der Linden <email@hidden>
- Date: Thu, 19 Nov 2009 08:59:57 +1100
- Delivered-to: email@hidden
- Delivered-to: email@hidden
Sorry for the repost, just occurred to me.
Since you are launching a server process directly, have you considered the typical unix solution of using pipes to communicate with the child. See popen(3), which is a single API that that allows a parent to create a child and connect to it.
Godfrey
On 2009-11-19, at 8:54 AM, Godfrey van der Linden wrote:
> I'm not 100% sure but I think that your child process inherits or can be made to inherit the parents mach ports. So the trick I envisage is
>
> 1> Parent create a right and make it inheritable (?)
> 2> Parent calls fork
> 3> Parent waits on a message
> 4> Calls exec with an argument of the inherited port id in hex I'd guess
> and rendezvous can not happen
>
> This seems pretty reliable, if ports can be inherited across a fork() which is a big if.
>
> Finally if it doesn't work I know for a fact that it will work with unix-domain sockets.
>
> Godfrey
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