vdevd openrc init script

vdevd-openrc-conf

# /etc/conf.d/vdevd

VDEV_BIN="/sbin/vdevd"
VDEV_OPTS=""
VDEV_CONFIG="/etc/vdev/vdevd.conf"
VDEV_MOUNTPOINT="/dev"

vdevd-openrc-init

#!/sbin/openrc-run

description="vdev device manager"

extra_commands="once"

depend()
{
	provide dev
	need dev-mount sysfs
	before checkfs fsck
}

# load an ini file as a set of namespaced environment variables, echoing them to stdout
# $1 is the path to the file 
# $2 is the namespace to be prepended to each variable name 
vdevd_source_config()
{
   local FILE_PATH NAMESPACE line KEY VALUE
   
   FILE_PATH=$1
   NAMESPACE=$2
   
   /bin/cat $FILE_PATH | /bin/sed -r "s/.*\[.*\].*//g" | \
   while read line; do 
   
      KEY=$(echo $line | /bin/sed -r "s/(^.*)=.*/\1/g");
      VALUE=$(echo $line | /bin/sed -r "s/^.*=(.*)$/\1/g");
      
      if [ -n "$KEY" ]; then 
      
         echo "${NAMESPACE}${KEY}=${VALUE}"
      fi
   done
}

vdevd_tests()
{
	if [ ! -x ${VDEV_BIN} ]; then
		eerror "Daemon not executable"
		return 1
	fi

	# system-wide vdevd needs /sys to be mounted
	if [ ! -d /sys/class/ ]; then
		eerror "Daemon requires a mounted sysfs, not started"
		return 1
	fi

	# system-wide vdevd needs "modern" sysfs
	if [ -d /sys/class/mem/null -a ! -L /sys/class/mem/null ] || \
	   [ -e /sys/block -a ! -e /sys/class/block ]; then
		ewarn "CONFIG_SYSFS_DEPRECATED must not be selected"
		ewarn "Booting will continue in 30 seconds but many things will be broken"
		sleep 30
	fi

	# load vdev config variables as vdev_config_*
	vdevd_source_config "${VDEV_CONFIG}" "vdev_config_"

	# config sanity check 
	if [ -z "$vdev_config_pidfile" ]; then 
		eerror "No PID file defined in ${VDEV_CONFIG}.  Please set the pidfile= directive."
		eerror "You will be unable stop or restart vdevd with this script."
		return 1
	fi

	return 0
}

start()
{
	vdevd_tests || return 1

	# clear uevent helper--vdevd subsumes its role
	if [ -w /sys/kernel/uevent_helper ]; then
		echo "" > /sys/kernel/uevent_helper
	fi

	# set the SELinux context for devices created in the initramfs
	[ -x /sbin/restorecon ] && /sbin/restorecon -R ${VDEV_MOUNTPOINT}

	# make sure log directory exists...
	if [ -n "${vdev_config_logfile}" ]; then 
		vdev_log_dir=$(echo "${vdev_config_logfile}" | sed -r 's/[^/]+$//g')

		if [ -n "${vdev_log_dir}" ]; then 
			mkdir -p "${vdev_log_dir}"
		fi
	fi

	ebegin "Starting ${description}"
	start-stop-daemon --start \
		--exec ${VDEV_BIN} \
		--pidfile ${vdev_config_pidfile} \
		--make-pidfile \
		-- -c ${VDEV_CONFIG} ${VDEV_OPTS} ${VDEV_MOUNTPOINT}
	# --quiet --background
	#	--user ${VDEV_USER:-nobody} \
	#	--group ${VDEV_GROUP:-nobody} \
	eend $?
}

stop()
{
	vdevd_tests || return 1

	ebegin "Stopping ${description}"
	start-stop-daemon --stop \
		--exec ${VDEV_BIN} \
		--pidfile ${vdev_config_pidfile} \
		--retry SIGTERM/5
	eend $?
}

once()
{
	ebegin "Run once ${description}"
	elog "(Re)seeding device files"
	${VDEV_BIN} -c ${VDEV_CONFIG} --once ${VDEV_OPTS} ${VDEV_MOUNTPOINT}
	eend $?
}