openrc/sh/runscript.sh.in

#!@SHELL@
# Shell wrapper for runscript

# Copyright (c) 2007-2009 Roy Marples <roy@marples.name>
# Released under the 2-clause BSD license.

verify_boot()
{
	if [ ! -e ${RC_SVCDIR}/softlevel ]; then
		eerror "You are attempting to run an openrc service on a"
		eerror "system which openrc did not boot."
		eerror "You may be inside a chroot or you may have used"
		eerror "another initialization system to boot this system."
		eerror "In this situation, you will get unpredictable results!"
		eerror
		eerror "If you really want to do this, issue the following command:"
		eerror "touch ${RC_SVCDIR}/softlevel"
		exit 1
	fi
	return 0
}

sourcex()
{
	if [ "$1" = "-e" ]; then
		shift
		[ -e "$1" ] || return 1
	fi
	if ! . "$1"; then
		eerror "$RC_SVCNAME: error loading $1"
		exit 1
	fi
}

sourcex "@LIBEXECDIR@/sh/functions.sh"
sourcex "@LIBEXECDIR@/sh/rc-functions.sh"

# Support LiveCD foo
if sourcex -e "/sbin/livecd-functions.sh"; then
	livecd_read_commandline
fi

if [ -z "$1" -o -z "$2" ]; then
	eerror "$RC_SVCNAME: not enough arguments"
	exit 1
fi

# So daemons know where to recall us if needed
RC_SERVICE="$1" ; export RC_SERVICE
shift

# Compat
SVCNAME=$RC_SVCNAME ; export SVCNAME

# Dependency function
config() {
	[ -n "$*" ] && echo "config $*"
}
need() {
	[ -n "$*" ] && echo "need $*"
}
use() {
	[ -n "$*" ] && echo "use $*"
}
before() {
	[ -n "$*" ] && echo "before $*"
}
after() {
	[ -n "$*" ] && echo "after $*"
}
provide() {
	[ -n "$*" ] && echo "provide $*"
}
keyword() {
	[ -n "$*" ] && echo "keyword $*"
}

# Describe the init script to the user
describe()
{
	if [ -n "$description" ]; then
		einfo "$description"
	else
		ewarn "No description for $RC_SVCNAME"
	fi

	local svc= desc=
	for svc in ${extra_commands:-$opts} $extra_started_commands \
		$extra_stopped_commands; do
		eval desc=\$description_$svc
		if [ -n "$desc" ]; then
			einfo "$HILITE$svc$NORMAL: $desc"
		else
			ewarn "$HILITE$svc$NORMAL: no description"
		fi
	done
}

# Report status
_status()
{
	if service_stopping; then
		ewarn "status: stopping"
		return 4
	elif service_starting; then
		ewarn "status: starting"
		return 8
	elif service_inactive; then
		ewarn "status: inactive"
		return 16
	elif service_started; then
		if service_crashed; then
			eerror "status: crashed"
			return 32
		fi
		einfo "status: started"
		return 0
	else
		einfo "status: stopped"
		return 3
	fi
}

# Template start / stop / status functions
start()
{
	[ -n "$command" ] || return 0
	local _background=
	ebegin "Starting ${name:-$RC_SVCNAME}"
	if yesno "${command_background}"; then
		if [ -z "${pidfile}" ]; then
			eend 1 "command_background option used but no pidfile specified"
			return 1
		fi
		_background="--background --make-pidfile"
	fi
	if yesno "$start_inactive"; then
		local _inactive=false
		service_inactive && _inactive=true
		mark_service_inactive
	fi
	eval start-stop-daemon --start \
		--exec $command \
		${procname:+--name} $procname \
		${pidfile:+--pidfile} $pidfile \
		$_background $start_stop_daemon_args \
		-- $command_args
	eend $? "Failed to start $RC_SVCNAME" && return 0
	if yesno "$start_inactive"; then
		if ! $_inactive; then
			mark_service_stopped
		fi
	fi
	return 1
}

stop()
{
	[ -n "$command" -o -n "$procname" -o -n "$pidfile" ] || return 0
	ebegin "Stopping ${name:-$RC_SVCNAME}"
	start-stop-daemon --stop \
		${retry:+--retry} $retry \
		${command:+--exec} $command \
		${procname:+--name} $procname \
		${pidfile:+--pidfile} $pidfile \
		${stopsig:+--signal} $stopsig
	eend $? "Failed to stop $RC_SVCNAME"
}

status()
{
	_status
}

yesno $RC_DEBUG && set -x

_conf_d=${RC_SERVICE%/*}/../conf.d
# If we're net.eth0 or openvpn.work then load net or openvpn config
_c=${RC_SVCNAME%%.*}
if [ -n "$_c" -a "$_c" != "$RC_SVCNAME" ]; then
	if ! sourcex -e "$_conf_d/$_c.$RC_RUNLEVEL"; then
		sourcex -e "$_conf_d/$_c"
	fi
fi
unset _c

# Overlay with our specific config
if ! sourcex -e "$_conf_d/$RC_SVCNAME.$RC_RUNLEVEL"; then
	sourcex -e "$_conf_d/$RC_SVCNAME"
fi
unset _conf_d

# Load any system overrides
sourcex -e "@SYSCONFDIR@/rc.conf"

if [ "$RC_UNAME" = "Linux" -a "$RC_SYS" != "PREFIX" -a "$1" = "start" ]; then
	openrc_cgroup=/sys/fs/cgroup/openrc
	if [ -d ${openrc_cgroup} ]; then
		cgroup=${openrc_cgroup}/${RC_SVCNAME}
		mkdir -p ${cgroup}
		[ -f "${cgroup}"/tasks ] && echo 0 > "${cgroup}"/tasks
	fi

	shares="${rc_cgroup_cpu_shares:-$RC_CGROUP_CPU_SHARES}"
	if [ -n "${shares}" -a -d /sys/fs/cgroup/cpu ]; then
		cgroup=/sys/fs/cgroup/cpu/openrc_${RC_SVCNAME}
		if [ ! -d ${cgroup} ]; then
			mkdir -p ${cgroup}
		fi
		[ -f "${cgroup}"/cpu.shares ] && echo ${shares} > "${cgroup}"/cpu.shares
		[ -f "${cgroup}"/tasks ] && echo 0 >> "${cgroup}"/tasks
	fi

	#todo: add processes to cgroups based on settings in conf.d
fi

# Apply any ulimit defined
[ -n "${rc_ulimit:-$RC_ULIMIT}" ] && ulimit ${rc_ulimit:-$RC_ULIMIT}

# Load our script
sourcex "$RC_SERVICE"

for _d in $required_dirs; do
	if [ ! -d $_d ]; then
		eerror "$RC_SVCNAME: \`$_d' is not a directory"
		exit 1
	fi
done
unset _d

for _f in $required_files; do
	if [ ! -r $_f ]; then
		eerror "$RC_SVCNAME: \`$_f' is not readable"
		exit 1
	fi
done
unset _f

if [ -n "$opts" ]; then
		ewarn "Use of the opts variable is deprecated and will be"
		ewarn "removed in the future."
		ewarn "Please use extra_commands, extra_started_commands or extra_stopped_commands."
fi

while [ -n "$1" ]; do
	# Special case depend
	if [ "$1" = depend ]; then
		shift

		# Enter the dir of the init script to fix the globbing
		# bug 412677
		cd ${RC_SERVICE%/*}
		_depend
		cd /
		continue
	fi
	# See if we have the required function and run it
	for _cmd in describe start stop status ${extra_commands:-$opts} \
		$extra_started_commands $extra_stopped_commands
	do
		if [ "$_cmd" = "$1" ]; then
			if [ "$(command -v "$1")" = "$1" ]; then
				# If we're in the background, we may wish to
				# fake some commands. We do this so we can
				# "start" ourselves from inactive which then
				# triggers other services to start which
				# depend on us.
				# A good example of this is openvpn.
				if yesno $IN_BACKGROUND; then
					for _cmd in $in_background_fake; do
						if [ "$_cmd" = "$1" ]; then
							shift
							continue 3
						fi
					done
				fi
				# Check to see if we need to be started before
				# we can run this command
				for _cmd in $extra_started_commands; do
					if [ "$_cmd" = "$1" ]; then
						if verify_boot && ! service_started; then
							eerror "$RC_SVCNAME: cannot \`$1' as it has not been started"
							exit 1
						fi
					fi
				done
				# Check to see if we need to be stopped before
				# we can run this command
				for _cmd in $extra_stopped_commands; do
					if [ "$_cmd" = "$1" ]; then
						if verify_boot && ! service_stopped; then
							eerror "$RC_SVCNAME: cannot \`$1' as it has not been stopped"
							exit 1
						fi
					fi
				done
				unset _cmd
				case $1 in
						start|stop|status) verify_boot;;
				esac
				if [ "$(command -v "$1_pre")" = "$1_pre" ]
				then
					"$1"_pre || exit $?
				fi
				"$1" || exit $?
				if [ "$(command -v "$1_post")" = "$1_post" ]
				then
					"$1"_post || exit $?
				fi
				shift
				continue 2
			else
				if [ "$_cmd" = "start" -o "$_cmd" = "stop" ]
				then
					shift
					continue 2
				else
					eerror "$RC_SVCNAME: function \`$1' defined but does not exist"
					exit 1
				fi
			fi
		fi
	done
	eerror "$RC_SVCNAME: unknown function \`$1'"
	exit 1
done

exit 0