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README

README 2.2 KB
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  1. Openwrt inside a user mode linux.  Why would we even want this many ask?
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  2. 

  3. There are potentially a lot of reasons, one obvious one to me, it allows
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  4. folks to 'kick the tires' without actually flashing up any hardware.  It's
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  5. also a great environment for porting over packages, you can get a package
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  6. fully functional in the uclibc root environment inside a uml without actually
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  7. disturbing your 'real router', and then rebuild for a specific target once
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  8. it's fully tested.
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  9. 

  10. This is a first stab at a build that 'just works' and there will be more
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  11. cleanup to come.  The simple directions are:-
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  13. Configure for uml target
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  14. Configure with an ext4 root file system
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  15. build it all
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  17. In your bin directory you will find a kernel and an ext4 root file system
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  18. when it's finished.  Just run it like this:-
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  19. 

  20. bin/uml/openwrt-uml-vmlinux ubd0=bin/uml/openwrt-uml-ext4.img
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  22. The uml will start, and eventually the serial console of the uml will be at your
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  23. console prompt.  If you would like it in xterms, substitute con=xterm and con0=xterm.
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  24. No networking is configured, but, it's a starting point.  The resulting file system
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  25. has just enough free space to start kicking the tires and playing in the world of
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  26. 'embedded routers' along with all the resource restrictions that come with that
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  27. world.  
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  29. To configure networking and more, refer to the user mode linux documentation online.
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  30. A quick start goes along this line.  install the uml-utilities packages so you have
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  31. the uml switch in and running, then add a command param to your uml start like this
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  33. eth0=daemon,00:01:01:01:01:01,unix,/<your uml switch control socket here>
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  35. With that in, and uml networking actually functional (can be a challenge at times),
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  36. you should be able to ifconfig the interface and talk to the host side, or, if you
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  37. bridged the uml switch to your host network, you should be able to run udhcp and be
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  38. away with networking off to the world.  Again, if you are unfamiliar with uml and
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  39. uml networking, please read the docs and how-to stuff available on the net.  It does
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  40. take some fiddling to get it started and working right the first time, but after that,
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  41. it opens up a whole new world of virtual machines.
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  45. http://user-mode-linux.sourceforge.net/
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