#!/bin/sh
 
MODULES="dahdi"
DAHDI_MODULES_FILE="/etc/dahdi/modules"
 
usage() {
	cat <<EOF
$0: loads / unloads DAHDI kernel modules
 
Usage: $0 <load|unload>
 
* load: Loads all modules listed in /etc/dahdi/modules (one per line)
* unload: Unloads the DAHDI modules (all the modules that are dependencies
  of $MODULES).
EOF
}
 
# recursively unload a module and its dependencies, if possible.
# where's modprobe -r when you need it?
# inputs: module to unload.
# returns: the result from
unload_module() {
	module="$1"
	line=`lsmod 2>/dev/null | grep "^$1 "`
	if [ "$line" = '' ]; then return; fi # module was not loaded
 
	set -- $line
	# $1: the original module, $2: size, $3: refcount, $4: deps list
	mods=`echo $4 | tr , ' '`
	ec_modules=""
	# xpp_usb keeps the xpds below busy if an xpp hardware is
	# connected. Hence must be removed before them:
	case "$module" in xpd_*) mods="xpp_usb $mods";; esac
 
	for mod in $mods; do
		case "$mod" in
		dahdi_echocan_*)
			ec_modules="$mod $ec_modules"
			;;
		*)
			# run in a subshell, so it won't step over our vars:
			(unload_module $mod)
			;;
		esac
	done
	# Now that all the other dependencies are unloaded, we can unload the
	# dahdi_echocan modules.  The drivers that register spans may keep
	# references on the echocan modules before they are unloaded.
	for mod in $ec_modules; do
		(unload_module $mod)
	done
	rmmod $module
}
 
unload_modules() {
	for module in "$@"; do
		unload_module $module
	done
}
 
load_modules() {
	modules=`sed -e 's/#.*$//' $DAHDI_MODULES_FILE 2>/dev/null`
	for line in $modules; do
		modprobe $line
	done
}
 
case "$1" in
	load) load_modules "$@";;
	unload) unload_modules $MODULES;;
	*) usage;;
esac

[Unit]
Description=DAHDI kernel modules
After=network.service
 
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/sbin/dahdi-modules load
ExecStartPost=/usr/sbin/dahdi_cfg -c /etc/dahdi/system.conf
ExecStop=/usr/sbin/dahdi-modules unload
 
[Install]
WantedBy=multi-user.target

#!/bin/sh
#
# dahdi         This shell script takes care of loading and unloading \
#               DAHDI Telephony interfaces (use systemd)
# description: The DAHDI drivers allow you to use your linux \
# computer to accept incoming data and voice interfaces
#
# config: /etc/dahdi/init.conf
 
### BEGIN INIT INFO
# Provides:        dahdi
# Required-Start:  $local_fs $remote_fs
# Required-Stop:   $local_fs $remote_fs
# Should-Start:    $network $syslog
# Should-Stop:     $network $syslog
# Default-Start:   2 3 4 5
# Default-Stop:    0 1 6
# Short-Description: DAHDI kernel modules
# Description:     dahdi - load and configure DAHDI modules
### END INIT INFO
 
initdir=/etc/init.d
 
# See how we were called.
case "$1" in
  start)
    service dahdi start
    ;;
  stop)
    service dahdi stop;
    ;;
  restart|force-reload)
    $0 stop
    $0 start
    ;;
  status)
    service dahdi status
    ;;
  *)
    echo "Usage: dahdi {start|stop|restart|status}"
    exit 1
esac
 
exit 0