rc/rc.subr at master · venomlinux/rc · GitHub

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#!/bin/sh

COLOUR="\033[90m"
CRESET="\033[0m"

welcome() {
	msg "Booting up ${COLOUR}$1${CRESET}!"
}

msg() {
	printf "%b" "${COLOUR}::${CRESET} $@\n"
}

start_daemon() {
	# Usage: start_daemon [-f] [-n nicelevel] [-p pidfile] program [args...]

	nice=0

	while true; do
		case $1 in
			-f) force=1
			    shift;;
			-n) nice=$2
			    shift 2;;
			-p) pidfile=$2
			    shift 2;;
			 *) pathname=$1
			    shift
			    break;;
		esac
	done

	if [ ${pathname##*/} = "$pathname" ]; then
		progname=$pathname
		pathname=$(command -v $pathname)
	else
		progname=${pathname##*/}
	fi

	# check for valid program
	[ "$pathname" ]    || return 5
	[ -x "$pathname" ] || return 5

	if [ "$pidfile" ]; then
		pidlist=$(procpid -p $pidfile $progname)
	else
		pidlist=$(procpid $progname)
	fi

	if [ ! "$force" ]; then
		[ "$pidlist" ] && return 100
	fi

	nice -n $nice $pathname $@
}

stop_daemon() {
	# Usage: stop_daemon [-p pidfile] program [signal]

	signal="-TERM"
	fallback="-KILL"
	delay=10

	while true; do
		case $1 in
			-p) pidfile=$2
			    shift 2;;
			 *) pathname=$1
			    shift
			    break ;;
		esac
	done

	[ "$1" ] && signal=$1
	[ "$2" ] && return 4

	if [ ${pathname##*/} = "$pathname" ]; then
		progname=$pathname
		pathname=$(command -v $pathname)
	else
		progname=${pathname##*/}
	fi

	# check for valid program
	[ "$pathname" ]    || return 5
	[ -x "$pathname" ] || return 5

	if [ "$pidfile" ]; then
		pidlist=$(procpid -p $pidfile $progname)
	else
		pidlist=$(procpid $progname)
	fi

	[ "$pidlist" ] || return 100

	for pid in $pidlist; do
		kill -0 $pid 2>/dev/null
		if [ "$?" = 0 ]; then
			kill "$signal" $pid 2>/dev/null
			while [ "$delay" != 0 ]; do
				kill -0 $pid 2>/dev/null || piddead=1
				[ "$piddead" ] && break
				sleep 0.1
				delay="$(($delay - 1))"
			done
			if [ ! "$piddead" ]; then
				kill "$fallback" $pid 2>/dev/null
			fi
		fi
	done

	if [ "$pidfile" ] && [ -e "$pidfile" ]; then
		rm -f "$pidfile"
	fi
}

status_daemon() {
	# Usage: status_daemon [-p pidfile] program

	while true; do
		case $1 in
			-p) pidfile=$2
			    shift;;
			 *) pathname=$1
			    [ "$2" ] && return 4
			    break ;;
		esac
		shift
	done

	if [ ${pathname##*/} = "$pathname" ]; then
		progname=$pathname
		pathname=$(command -v $pathname)
	else
		progname=${pathname##*/}
	fi

	# check for valid program
	[ "$pathname" ]    || return 5
	[ -x "$pathname" ] || return 5

	if [ "$pidfile" ]; then
		pidlist=$(procpid -p $pidfile $progname)
	else
		pidlist=$(procpid $progname)
	fi

	if [ "$pidlist" ]; then
		echo "$progname is running with Process ID(s): $pidlist"
	else
		if [ "$pidfile" ] && [ -e "$pidfile" ]; then
			echo "$progname is not running but '$pidfile' exist."
		else
			echo "$progname is not running."
		fi
	fi
}

procpid() {
	# Usage: procpid [-p pidfile] program

	while true; do
		case $1 in
			-p) pidfile=$2
			    shift;;
			 *) pathname=$1
			    [ "$2" ] && return 4
			    break ;;
		esac
		shift
	done

	if [ ${pathname##*/} = "$pathname" ]; then
		progname=$pathname
		pathname=$(command -v $pathname)
	else
		progname=${pathname##*/}
	fi

	# check for valid program
	[ "$pathname" ]    || return 5
	[ -x "$pathname" ] || return 5

	if [ "$pidfile" ] && [ -e "$pidfile" ]; then
		pidlist=$(head -n1 "$pidfile")
	fi

	pidlist="$pidlist $(pidof $progname)"

	for pid in $pidlist; do
		echo $pids | grep -qw $pid && continue
		pids="$pids $pid"
	done

	echo $pids
}