[[!meta copyright="Copyright © 2007, 2008 Free Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable id="license" text="Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled [[GNU Free Documentation License|/fdl]]."]]"""]] # Concepts A [[microkernel]] implements a minimal number of abstractions that facilitate the realization of operating system services. [[Mach's_concepts|mach/concepts]] are documented here. Read OSF's Kernel Principles. Find it under the [[mach/documentation]] link. # Exercises Mach's API is documented in OSF's Kernel API book. Find it under the [[mach/documentation]] link. Skim it to get an idea of how the API looks and then try the following exercises: Send messages using Mach's IPC mechanism ([detailed description](http://walfield.org/pub/people/neal/papers/hurd-misc/mach-ipc-without-mig.txt)). Implement your own pager. Write a server that synthesizes content on the fly and have a client map the object into its address space and print out the file.