Just been looking at the BBC image. Doesn't look too hackable :-(
It consists of a 26Mb "Rusty's compressed ext2 filesystem" called
"singularity" and a few other bits and pieces. The singularity consists of
a #!/bin/sh , a command and 26Mb of binary data.
When I booted it, There was only one init file I could find in /sbin.defunct
which runs the boot sequence. I've inserted some relevant lines at the end
Anyone else wann burn the iso to a standard CD and have a look. I'm not
experienced enough with this sort of thing to tell quite what we could do
I'd be inclined to suggest we shouldn't burn a bunch of these immediately
but rather get a copy each to use as a learning tool for writing our own.
On the up side, the image contains X (fvwm), wvdial, loads of networking,
ssh (AFAIK, telnet etc are linked to run in ssh by default) and a cute
little easter egg (do a "SVGATextMode" and then "egg" in a shell).
Couldn't get X to run properly at home. Hacked the XF86Config to match my
local one and got X up but the windows all have transparent backgrounds and
don't refresh properly (It was late and I was supposed to be doing something
General Forecast Division
ph +353 1 8064255
fax +353 1 8064275
conor.daly at met.ie
Here's the bit that uncompresses the main filesystem
# Normal LNX rescue system code
echo "Found the LNX CD-ROM on $drive, mounting under /mnt/cdrom-real"
mount -r -t iso9660 $drive /mnt/cdrom-real 2>/dev/null
# cloop mount happens here!
if [ -f /mnt/cdrom-real/singularity ]
echo "Found compressed ext2 filesystem in /mnt/cdrom-real, loading
# uses Rusty's compressed loopback block device driver, cloop.c
# This associates the decompressed contents of the file "singularity"
# with the block device /dev/cloop (block device 240, 0 for now)
# Heaven forbid we should do something so difficult as
# /mnt/cdrom-real/insmod /mnt/cdrom-real/cloop.o <
# mount -r -t ext2 /dev/cloop /mnt/cdrom
# instead, we just _RUN_ the thing!
echo "Mounting compressed blockdevice /dev/cloop under /mnt/cdrom"
echo "Uh-oh, can't find compressed ext2 filesystem!"
# cloop mount done
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