Arch Linux

ezzetabi

Member

Registered: 2006-08-27

Posts: 947

/etc/rc.shutdown daemon question

Here a piece of /etc/rc.shutdown:

if [ "$PREVLEVEL" = "3" -o "$PREVLEVEL" = "5" ]; then
    # Shutdown daemons
    let i=${#DAEMONS[@]}
    while [[ i -ge 0 ]]; do
        if [[ `echo ${DAEMONS[$i]} | grep '^[^\!]' | wc -l` -eq 1 ]]; then
            /etc/rc.d/${DAEMONS[$i]#@} stop
        fi
        let i=i-1
    done

    # find any leftover daemons and shut them down
    if [ -d /var/run/daemons ]; then
        for daemon in `ls /var/run/daemons`; do
            /etc/rc.d/$daemon stop
        done
    fi
fi

What does the first part `#Shutdown daemons' mean? Why the second is not enough?

I am asking since I think there is  a bug somewhere. In my home computer I use ADSL daemon started in background to automatically connect to internet when I turn on the computer. If the connection fails when I turn off the system tries anyway to stop it.
On the other hand, using my laptop if I connect manually (still using /etc/rc.d/adsl) it won't disconnect on shutdown...

Thanks!

ataraxia

Member

From: Pittsburgh

Registered: 2007-05-06

Posts: 1,553

Re: /etc/rc.shutdown daemon question

The first part means "shut down all the daemons that are listed in DAEMONS in rc.conf".

The second part means "shut down any daemons that have a PID file".

It sounds like neither the ADSL daemon nor its initscript creates a PID file.

Cerebral

Forum Fellow

From: Waterloo, ON, CA

Registered: 2005-04-08

Posts: 3,108

Website

Re: /etc/rc.shutdown daemon question

The first part means "shut down all the daemons that are listed in DAEMONS in rc.conf".

More specifically, shut them down in the reverse order they were started.

ezzetabi

Member

Registered: 2006-08-27

Posts: 947

Re: /etc/rc.shutdown daemon question

So it is normal it tries to shutdown daemons that failed to start?

Cerebral

Forum Fellow

From: Waterloo, ON, CA

Registered: 2005-04-08

Posts: 3,108

Website

Re: /etc/rc.shutdown daemon question

I guess so - I don't have an Arch box handy right now, so I can't verify 100%, but I think you're right.  In general, though, the files in /etc/rc.d should guard against stopping a non-running service

ezzetabi

Member

Registered: 2006-08-27

Posts: 947

Re: /etc/rc.shutdown daemon question

What about changing it to something like:

if [ "$PREVLEVEL" = "3" -o "$PREVLEVEL" = "5" ]; then
    # Shutdown daemons
    let i=${#DAEMONS[@]}
    while [[ i -ge 0 ]]; do
        if [[ `echo ${DAEMONS[$i]} | grep '^[^\!]' | wc -l` -eq 1 \
         && -a /var/run/${DAEMONS[$i]#@} ]]; then
            /etc/rc.d/${DAEMONS[$i]#@} stop
        fi
        let i=i-1
    done
 [...]
fi

So it would stop only working services...
Yet this does not explain why when I connect manually with my laptop it does not disconnect automatically when I turn off or reboot...