Hi All, This is my first time posting on the list. Hello everyone. I've looked at some of the doc and read some of the list looking for various things. I can't find em. I hope the questions are not too obvious and that I haven't missed finding them somewhere. I'd greatly appreciate any answers and/or pointers to doc I haven't found yet. 1. As I recall Mach based systems are usually a collection of communicating Mach tasks/servers but it appears that the Darwin/Mac OS X kernel must be a single monolithic Mach Task. Although there is no netname server at all, the bootstrap server subsumes these responsibilities I've read, not even the bootstrap server is available to the Kernel task(s). So the questions here are: is the BSD kernel a single Mach task? Are there any other Mach tasks (doing Mach IPC) within the kernel boundry? 2. I've also read in the list that the way to do kernel/userland boundry crossings with Mach is to somehow pass the required port rights from userland into the kernel. How is this usually done? Are there realtivly simple examples of services (Mach servers if that's possible) living in kernel land that are in the kernel that someone can point me to? 3. Older Mach documentation pretty explicitly states that MachIPC is a wire protocol in addition to an in kernel IPC mechanism. Are the hooks still in Darwin/Mac OS X to do IPC between distributed processes? Thanks for any help! Rob --- Rob Ballantyne Research Manager CECM, Simon Fraser University Burnaby, BC, CANADA (V5A 1S6) email: ballanty@cecm.sfu.ca ph: (604)291-4981 _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.