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#!/bin/bash
# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

if [[ ${BOOT} == "yes" ]] ; then
	trap ":" INT QUIT TSTP
fi

argv0=${0##*/}
source /etc/init.d/functions.sh || {
	echo "${argv0}: Could not source /etc/init.d/functions.sh!" 1>&2
	exit 1
}
esyslog() { :; }

usage() {
	cat <<-EOF
	Usage: ${argv0} [options]

	Rebuild Gentoo init.d service dependency tree.

	Options:
	  -d, --debug       Turn on debug output
	  -s, --svcdir      Specify svcdir (default: ${svcdir})
	  -u, --update      Force update even if mtimes are OK
	  -h, --help        Show this help cruft
	EOF
	[[ -z $@ ]] && exit 0
	echo
	eerror "$*"
	exit 1
}

mysvcdir=${svcdir}
update=false

while [[ -n $1 ]] ; do
	case "$1" in
		--debug|-d)
			set -x
			;;
		--svcdir|-s)
			if [[ -z $2 || $2 == -* ]] ; then
				eerror "No svcdir specified"
			else
				shift
				mysvcdir="$1"
			fi
			;;
		--update|-u)
			update=true
			;;
		--help|-h)
			usage
			;;
		*)
			usage "Invalid option '$1'"
			;;
	esac
	shift
done

if [[ ! -d ${mysvcdir} ]] ; then
	if ! mkdir -p -m 0755 "${mysvcdir}" 2>/dev/null ; then
		eerror "Could not create needed directory '${mysvcdir}'!"
	fi
fi

for x in softscripts snapshot options daemons \
	started starting inactive wasinactive stopping failed \
	exclusive exitcodes scheduled coldplugged ; do
	if [[ ! -d "${mysvcdir}/${x}" ]] ; then
		if ! mkdir -p -m 0755 "${mysvcdir}/${x}" 2>/dev/null ; then
			eerror "Could not create needed directory '${mysvcdir}/${x}'!"
		fi
	fi
done

# Only update if files have actually changed
if ! ${update} ; then
	clock_screw=0
	mtime_test="${mysvcdir}/mtime-test.$$"

	# If its not there, we have to update, and make sure its present
	# for next mtime testing
	if [[ ! -e "${mysvcdir}/depcache" ]] ; then
		update=true
		touch "${mysvcdir}/depcache"
	fi

	touch "${mtime_test}"
	for config in /etc/conf.d/* /etc/init.d/* /etc/rc.conf
	do
		! ${update} \
			&& is_older_than "${mysvcdir}/depcache" "${config}" \
			&& update=true
		
		if is_older_than "${mtime_test}" "${config}" ; then
			# Update the file modification time
			touch "${config}" &>/dev/null
			clock_screw=1
		fi
	done
	rm -f "${mtime_test}"

	if [[ ${clock_screw} == 1 ]] ; then
		ewarn "One of the files in /etc/{conf.d,init.d} or /etc/rc.conf"
		ewarn "has a modification time in the future!"
	fi

	shift
fi

! ${update} && [[ -e "${mysvcdir}/deptree" ]] && exit 0

ebegin "Caching service dependencies"

# Clean out the non volatile directories ...
rm -rf "${mysvcdir}"/dep{cache,tree} "${mysvcdir}"/{broken,snapshot}/*

retval=0
SVCDIR="${mysvcdir}"
DEPTYPES="${deptypes}"
ORDTYPES="${ordtypes}"

export SVCDIR DEPTYPES ORDTYPES

cd /etc/init.d

/bin/gawk \
	-f /lib/rcscripts/awk/functions.awk \
	-f /lib/rcscripts/awk/cachedepends.awk || \
	retval=1

bash "${mysvcdir}/depcache" | \
/bin/gawk \
	-f /lib/rcscripts/awk/functions.awk \
	-f /lib/rcscripts/awk/gendepends.awk || \
	retval=1

touch "${mysvcdir}"/dep{cache,tree}
chmod 0644 "${mysvcdir}"/dep{cache,tree}

eend ${retval} "Failed to cache service dependencies"

exit ${retval}

# vim:ts=4