Jozef Hitzinger wrote: > > > I'm curious because the standard rc0.d/S90halt script refers to ups: > > > > > > #! /bin/sh > > > # halt Execute the halt command. > > > # Version: @(#)halt 2.75 19-May-1998 [EMAIL PROTECTED] > > > PATH=/sbin:/bin:/usr/sbin:/usr/bin > > > # See if we need to cut the power. > > > if [ -x /etc/init.d/ups-monitor ] > > > then > > > /etc/init.d/ups-monitor poweroff > > > fi > > > halt -d -f -i -p > > Here's what I figured out (please correct me if I'm wrong). > > > > - Have your package provide and conflict with "ups-monitor" > > and with other ups packages too, I presume
No. They should also provide and conflict with "ups-monitor" and so this is taken care of without aprori knowing the full list of UPS packages (which seems to be growing weekly!). > > - provide a symlink such that /etc/init.d/ups-monitor points to > > your /etc/init.d/smartupstools script. This script should > > accept the "poweroff" argument to send the kill signal to the > > UPS on system halt. > > means that 'ups-monitor' is just hardcoded into halt script? Yes. > ok, I can > mimic it's behavior, but .. hmm, I didn't find anything about this in the > policy. please give me a pointer if it's just my blindness Not mentionned in Policy. Some of this is documented in the sysvinit package (in particular the /etc/init.d/powerfail script). Since halt is part of that package, the docs might be in there somewhere too. > > Unrelated, but extra info: My package also has a > > /etc/init.d/powerfail script. This script is the one called by > > init (as configured by /etc/inittab) and should accept the > > arguments "start", "stop" and "now": > > > > - `/etc/init.d/powerfail start' initiates a timed "shutdown -h" > > (halt) in background, on the assumption that if power is > > restored the shutdown can be cancelled. > > > > - `/etc/init.d/powerfail stop' cancels the running shutdown and > > notifies all users that power is restored and no shutdown is > > imminent. > > > > - `/etc/init.d/powerfail now' cancels the running shutdown and > > initiates an immediate "shutdown -h" in foreground; this means > > once the UPS tells you the battery is low, you will indeed > > shutdown (there is no recovery). > > > > Note that as you halt the machine, the shutdown sequence > > (/etc/init.d/halt) invokes ups-monitor one last time with the > > kill flag (-k), forcing the UPS to turn off, but only if the UPS > > is indeed in either the FAIL or LOW state (in any case, any UPS I > > know of will ignore the kill signal if power is still available). > > I probably won't need something like this .. If the line is good, > there's no reason to shutdown the ups, if the power failed, shutdown will > be triggered when battery gets low. The point is to save the UPS battery by telling _it_ to shutdown after we have bought the computer down. Peter
