[BusyBox] ifup, ifdown applets

[Steven Scholz]

Glenn McGrath wrote:
> 
> On Mon, 18 Nov 2002 12:13:00 +0100
> Steven Scholz <steven.scholz at imc-berlin.de> wrote:
> 
> > Glenn McGrath wrote:
> > >
> > > Ive just commited those applets based on the debian ifupdown package.
> >
> > On my machine an "ifdown -f -v eth0" results in
> >
> > ifdown: Configuring interface eth0=eth0 (inet)
> > ifdown: cat /var/run/udhcpc.eth0.pid | xargs -i kill -TERM {}
> > xargs: invalid option -- i
> > BusyBox v0.61.pre (2002.11.17-14:39+0000) multi-call binary
> >
> > Usage: xargs [COMMAND] [-prt] [ARGS...]
> >
> > Executes COMMAND on every item given by standard input.
> >
> > Options:
> >         -p      Prompt the user about whether to run each command
> >         -r      Do not run command for empty readed lines
> >         -t      Print the command line on stderr before executing it.
> >
> > since busybox xargs doesn't know -i option...
> >
> > BTW what happens if there is no network connection during boot, i.e
> > udhcp fails. Is there a way of using a default configuration?
> >
> 
> hmm, i hadnt tested it with dhcp, "cat /var/run/dhclient.%iface%.pid |
> xargs -i kill -TERM {}" is hard coded :(
> 
> Ive started to rewritting ifupdown, its going to take a while though, it
> was probably a mistake to commit the current ifupdown.
No! Definitly not!

This way we could express some wishes! :o)

So first: Do you think it's nessesary to use a pid file? I don't like that since
I am using JFFS2 as root fs and don't want too much writing happen...
And if the system crashes there are still old, invalid pid files around...

Second: Maybe we should at least use defines for hardcoded stuff. I am thinking
of the udhcp script file. And of course it should be the same in the udhcp
source and in the ifupdown source...

Third: What about using a default if DHCP fails? I want to use udhcpc with
option "-q, --quit Quit after obtaining lease" only on boot. So when there's no
network connection while booting the interface doesn't get configured at all...

What do you think?

Steven