- Port Colinux to OSX (Leopard 10.5) for Intel only CPUs
- Because it's possible
- Educational purpose
- I want to run a postfix mailserver in Linux, but I also want to use Windows or OSX and use my favourite mail program.
- We have a "virtual" qemu/kvm OSX installation running 
- XCode works
- We found out how to write a Kext that can access the CR0 and CR3 register
Jul 19 20:56:46 Mac kernel: hello world Jul 19 20:56:46 Mac kernel: cr0: 8001003b
- A device handler works
emumac:~ monsti$ ls -la /dev/colinux crw------- 1 root wheel 18, 0 Jul 21 19:08 /dev/colinux
- We can now compile the kernel part. However the darwin kernel functions are 99% dummy. But here that's what you can see on the OSX syslog:
colinux: loaded version 0.8.0 (compiled on Aug 5 2008 18:54:38) colinux: manager load failure: ffe04c01
alloc.c - 50% partial (userspace map/unmap unfinished) conet.c - 100% dummy debug.c -100% dummy as in linux file.c - 0% dummy fs.c - 100% dummy as in linux manager.c - 50% a /dev/colinux is created but there is no implementation of the functions misc.c - 50% co_os_virt_to_phys() is missing and no idea how to implement mutex.c - 100% but unsure if this works - maybe we need some init() / refcounter for creating only one "group" pagec.c - 0% no idea how to implement scsi.c - 100% dummy as in linux time.c - 100% maybe some tuning is required timer.c - 50% implement co_os_timer_create - OSX has about 20 Time functions :) user.c - 0% no idea how to implement wait.c - 100% needs some tuning
OSX is so funny :) The mutex concept is so full feature blown. Also the Apple documentation is somehow buggy for WAIT/SLEEP in the kernel. The wait queues aren't available from the Kext as this Apple document claims [] (Wait Queues and Wait Primitives). It took some time to find out that the msleep()/wakeup() is what we need.
- Next step: implement more!
I want to help Edit
- IRC irc.oftc.net #colinux