Starting iaxmodem and faxmodem with upstart

Question

How can I use Upstart to start iaxmodem and faxgetty when I have multiple modems? Centos 6.4 has a nice warning as listed below which incites me to believe the standard inittab lines will not work.

# inittab is only used by upstart for the default runlevel.
#
# ADDING OTHER CONFIGURATION HERE WILL HAVE NO EFFECT ON YOUR SYSTEM.

where I would normally put

IAX:2345:respawn:/path/to/iaxmodem ttyIAX

Answer 1

Use a task which is started on change of runlevel to start a job for each IAXModem you want to start. Then use a task to start a faxgetty for each started iaxmodem job.

IE:

init 3 -> start-iaxmodem ---> iaxmodem(ttyIAX0) -> start-faxgetty(ttyIAX0) -> faxgetty(ttyIAX0)
                          \-> iaxmodem(ttyIAX1) -> start-faxgetty(ttyIAX1) -> faxgetty(ttyIAX1)

/etc/init/start-iaxmodems.conf:

# This service starts the configured number of gettys.
start on stopped rc RUNLEVEL=[2345]

task

script
    for ttyIAX in /etc/iaxmodem/* ; do
        start iaxmodem TTY=`basename $ttyIAX`
    done
end script

/etc/init/iaxmodem.conf:

# This service maintains an iaxmodem on the sepcified device.
stop on runlevel [016]

respawn
instance $TTY
exec /usr/sbin/iaxmodem $TTY

/etc/init/start-faxgettys.conf:

# This service starts the configured number of faxgettys.
start on started iaxmodem
# this will run once per triggering iaxmodem instance
instance $INSTANCE

task

script
    # give it time to at least create the device
    /bin/sleep 1s
    start faxgetty TTY=$INSTANCE
end script

/etc/init/faxgetty.conf:

# This service maintains a faxgetty on the sepcified device.
# only stop when the stopping iaxmodem is this TTY
stop on stopping iaxmodem INSTANCE=$TTY

respawn
instance $TTY

exec /usr/sbin/faxgetty $TTY