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testing cinit in a User-Mode-Linux (uml),
Nico Schottelius 2005-06-14 (Last Modified: 2005-06-14)
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1. Get an image you want to install cinit to
2. Compile an UML
3. change bin/cinit.uml.test to your needs
4. put a configuration (/etc/cinit) on to your image
5. ./bin/cinit.uml.test
   -> wait, your Linux starts with cinit enabled.

If you omit 4, you'll see how cinit will fail without having its base
directory.



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Using a raw (x86) hd image:
Access partition 1 via losetup:

sudo losetup -o 32256 /dev/loop0 "$hierabs/debian-hd.img"
linux ubd0=/dev/loop0 init=/sbin/cinit "$@"

Offset was taken from fdisk:

[19:22] denkbrett:emu# fdisk -l -u /dev/sda 

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x1669c708

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1              63    19535039     9767488+  83  Linux
/dev/sda2        19535040    23438834     1951897+  82  Linux swap / Solaris
/dev/sda3        23438835   156296384    66428775   83  Linux

===> 63*512bytes spaeter beginnt sda1

[19:23] denkbrett:~% echo 512\*63 |bc -l
32256

Results in losetup -o 32256 /dev/loop0 ./debian-hd.img     

Scripts from the nsbin project (lo-*) can be used.
It can be found at http://unix.schottelius.org/cgi-bin/gitweb.cgi.
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