svwaitup/check

[Jorge Almeida <jalmeida@math.ist.utl.pt>]

I'm trying to setup the network "service" with a run script like this:
 	#!/bin/bash
 	exec 2>&1
 	echo "*** Bringing up network..."
 	# wait for ulogd...
 	exec /etc/sysconfig/network-devices/ifup eth0

The system is LFS. The finish script will just "touch down". This means
I'm considering the task of bringing up the network as a one-time
initialization task, not a real service. But I want the network to start
after ulogd is up, and the latter is a real service, hence this
workaround to start network in stage2. (Comments/suggestions would be
appreciated. I'm familiar with daemontools, but I'm just starting with
runit.)

Now, as for the "wait for ulogd" part, the hint I found is the use of
svwaitup in http://smarden.org/pape/djb/daemontools/noinit.html. The
"svwaitup" link is broken and I'm assuming that it belongs to an older
release. I'm using the current developement one.
I suppose it should be done with sv, using the check command. Something
like this?
 	sv -w 3 check ????? ulogd || exit 1
How to "request a state" of the ulogd service? This part of the man page
is not clear to me.
Moreover, if the ./check script exists then sv check will not report to
STDOUT but will rather execute ./check. Is this correct?

TIA,

Jorge Almeida