svactivate

#!/bin/sh
#
# runit service activation
# (cloux@rote.ch)

# We need to be root
if [ $(id -u) -ne 0 ]; then printf '%s: Need to be root!\n' "$0"; exit 1; fi

if [ $# -eq 0 ]; then
	printf 'Enter runit service names as parameters.\n'
	printf 'Supported services are listed in /etc/sv/\n'
	exit
fi

# process all services provided as command line parameters
RET=0
for SRV in "$@"; do
	SRVNAME=${SRV##*/}
	if [ -d "/etc/service/$SRVNAME" ]; then
		printf '%s: runit service "%s" is already active\n' "${0##*/}" "$SRVNAME"
		continue
	fi
	if [ ! -d "/etc/sv/$SRVNAME" ]; then
		printf '%s: runit service definition "/etc/sv/%s" not found, activation failed\n' "${0##*/}" "$SRVNAME"
		RET=1
		continue
	fi
	# mark service as enabled
	rm -f "/etc/sv/$SRVNAME/disabled"
	# remove supervise symlinks
	find "/etc/sv/$SRVNAME/" -type l -name supervise -delete
	# enable service supervision
	ln -s "/etc/sv/$SRVNAME" /etc/service/ 2>/dev/null
	if [ $? -eq 0 ]; then
		# wait for runsv to become available
		COUNT=0
		while ! sv status $SRVNAME >/dev/null; do
			sleep 0.2
			COUNT=$((COUNT+1))
			if [ "$COUNT" -gt 40 ]; then
				printf '%s: runsv for runit service "%s" failed to start\n' "${0##*/}" "$SRVNAME"
				RET=1
				break
			fi
		done
	else
		printf '%s: runit service "%s" activation failed\n' "${0##*/}" "$SRVNAME"
		RET=1
	fi
done

exit $RET