Baslinux mailing list

[sindi keesan <keesan AT sdf.lonestar.org>]

On Wed, 20 Dec 2006, Lee Forrest wrote:

> On Wed, Dec 20, 2006 at 06:06:49PM +0000, sindi keesan wrote:
> > > > I would like help figuring out why the kernels I have compiled
> > > > for 2.4.31 do not work with BL3.40 in loop form but Steven's
> > > > 2.2.26 and David's 2.4.31 kernels do. Mine also does not work
> > > > with udhcpc, did not check David's. The config's for mine and
> > > > his are posted at my site.
>
> Got it. Will do my best to figure out what's going on.

I am really confused now.  udhcpc is in busybox and it appears to have 
made its own default.script in /usr/share/udhcpc.  It complained about not 
having one when I ran the smaller kernel (and at least yesterday there 
was no such file), then it did not complain when I used the bigger kernel 
and the file was there, and when I used the smaller kernel again it did 
not complain.  So the fix is to either boot with the full kernel and then 
from then on use the smaller one, or copy over the default.script to 
/usr/share/udhcpc (which the bigger kernel created).

I got 'error, script /share/udhcpc/default.script failed; No such file or 
directory' but the message went away after once using the larger kernel.

I don't understand but I have something that works now.  I also added 
ipchains ability (modular or built-in) to my small laptop kernel and 
removed ISA and Joliet and hotplug (needs kmod) and a few other things 
that should not be there.  The modular kernel (modular ipchains and cdrom 
support) is 600K, insmod ipchains.o to use a firewall.  650K if you have 
enough RAM for built-in support.  I have 12MB in one computer.

http://keesan.freeshell.org/bl/2.4.31 (I hope it all landed there):
bzimaglm.431 nad bzimagly.431 (M - modular) (Y - built into kernel).
With configs.

I am stymied about why 2.4.31 kernels are not letting me write to the BL3 
loop filesystem.  I can boot to ext2 linux with 2.4.31 kernel and mount 
initfs -o loop and write to it.

This morning, at the kitchen table rather than the front porch, when I 
forgot to turn on the router, udhcpc (working with the larger kernel) 
suddenly leased me 192.168.0.4 and two DNS numbers, and iwconfig gave me 
a signal level for SSID 'Netgear' of something negative but less 
negative than the noise level, and I could ping 192.168.0.1 and use lynx 
briefly, long enough to determine I had a connection (download) speed of 
between 10 and 13K/sec, which is a bit better than the free wireless 
promised to us some time next year and seems really speedy compared to 
dialup.  But very unstable.

On the front porch I got three different signals but no connection.  The 
early radio fanatics must have felt like this.  When the signal is too 
weak, instead of signal level -155 dBm you get 1/48 or 17/48, and raising 
the computer a few feet increased the number.  If I had a working battery 
or a very long extension cord I could walk around figuring out where the 
linksys and netgear and apple and 2wire signals come from.  There is also 
some background noise with SSID "" and stronger signal levels than the 
others but of course no connection.

This is ridiculously easy once you know how.  I could have used the large 
config that came with BL2 pcmcia.tgz, rather than cardctl ident for manfid 
and setting up my own config, then just typed start and udhcpc and been 
online.

The ipchains business is for the firewall.  I will try at the library with 
two laptop computers and wired network cards in both, ifconfig eth0 
192.168.1.1 and route add gw 192.168.1.2, and ifconfig eth0 192.168.1.2 
and ipchains on the other, then a wireless card in the second computer and 
udhcpc should assign eth1 (second wireless card) an IP number and I can be 
online with two computers, if this works.  One could even be a Windows 
computer using ipconfig instead of udhcpc.

Do I need a firewall on my gateway if the library has its own firewall?

My smf and ly and lm (with ipchains.o inserted) kernels should all work as 
gateways with ipchains.  I made scripts to run pcmcia start, then the 
correct line for ipchains or route add gw, and will then run udhcpc on the 
gateway.  I don't want to bother with udhcpd on the gateway, ifconfig is 
simpler.

> Lee

Si  keesan AT sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org