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- Openwrt inside a user mode linux. Why would we even want this many ask?
- There are potentially a lot of reasons, one obvious one to me, it allows
- folks to 'kick the tires' without actually flashing up any hardware. It's
- also a great environment for porting over packages, you can get a package
- fully functional in the uclibc root environment inside a uml without actually
- disturbing your 'real router', and then rebuild for a specific target once
- it's fully tested.
- This is a first stab at a build that 'just works' and there will be more
- cleanup to come. The simple directions are:-
- Configure for uml target
- Configure with an ext4 root file system
- build it all
- In your bin directory you will find a kernel and an ext4 root file system
- when it's finished. Just run it like this:-
- bin/uml/openwrt-uml-vmlinux ubd0=bin/uml/openwrt-uml-ext4.img
- The uml will start, and eventually the serial console of the uml will be at your
- console prompt. If you would like it in xterms, substitute con=xterm and con0=xterm.
- No networking is configured, but, it's a starting point. The resulting file system
- has just enough free space to start kicking the tires and playing in the world of
- 'embedded routers' along with all the resource restrictions that come with that
- world.
- To configure networking and more, refer to the user mode linux documentation online.
- A quick start goes along this line. install the uml-utilities packages so you have
- the uml switch in and running, then add a command param to your uml start like this
- eth0=daemon,00:01:01:01:01:01,unix,/<your uml switch control socket here>
- With that in, and uml networking actually functional (can be a challenge at times),
- you should be able to ifconfig the interface and talk to the host side, or, if you
- bridged the uml switch to your host network, you should be able to run udhcp and be
- away with networking off to the world. Again, if you are unfamiliar with uml and
- uml networking, please read the docs and how-to stuff available on the net. It does
- take some fiddling to get it started and working right the first time, but after that,
- it opens up a whole new world of virtual machines.
- http://user-mode-linux.sourceforge.net/
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