make_system_dirs() {
	#
	# Install FHS system directories.
	#
	for d in boot etc etc/modprobe.d etc/skel \
		home dev proc usr mnt opt sys media var run/lock; do
		[ ! -d ${d} ] && install -d ${d}
	done

	[ ! -d root ] && install -dm750 root

	# Don't try to create var/mail in the correct place if the user
	# is updating from an old system that has var/mail as a symlink
	[ ! -L var/mail ] && [ ! -d var/mail ] && install -dm1777 var/mail

	[ ! -d var/spool ] && install -d var/spool

	for d in local local/bin local/sbin local/include local/lib \
		bin include lib src; do
		[ ! -d usr/${d} ] && install -d usr/${d}
	done

	for d in locale misc terminfo zoneinfo doc info; do
		[ ! -d usr/share/${d} ] && install -d usr/share/${d}
		[ ! -d usr/local/share/${d} ] && install -d usr/local/share/${d}
	done

	for d in 1 2 3 4 5 6 7 8; do
		[ ! -d usr/share/man/man${d} ] && \
			install -d usr/share/man/man${d}
		[ ! -d usr/local/share/man/man${d} ] && \
			install -d usr/local/share/man/man${d}
	done

	# Create /bin, /sbin and /lib symlinks to /usr.
	for d in bin sbin lib; do
		if [ ! -h "$d" -a -d "$d" ]; then
			echo "/${d} must not be a directory, exiting!"
			exit 1
		fi
		ln -sf usr/${d} .
	done
	# Create /usr/sbin symlink to /usr/bin.
	[ ! -e usr/sbin ] && ln -sf bin usr/sbin

	for d in empty log opt cache lib; do
		[ ! -d var/${d} ] && install -d var/${d}
	done

	if [ "${ARCH}" = "x86_64" ] || [ "${ARCH}" = "ppc64le" ]; then
		[ -L lib64 ] || ln -sf usr/lib lib64
		cd usr
		[ -L lib64 ] || ln -sf lib lib64
		cd ..
	fi
	if [ "${ARCH}" = "x86_64" ]; then
		install -d usr/lib32
		[ -L lib32 ] || ln -sf usr/lib32 lib32
	fi
	if [ "${ARCH}" = "i686" ]; then
		[ -L lib32 ] || ln -sf lib lib32
		[ -L usr/lib32 ] || ln -sf lib usr/lib32
	fi

	# Create /var/run and /var/lock symlinks.
	for d in run lock; do
		if [ ! -h "var/$d" -a -d var/${d} ]; then
			echo "/${d} must not be a directory, exiting!"
			exit 1
		fi
	done

	cd var
	ln -sf ../run .
	ln -sf ../run/lock .
	[ ! -d spool/mail ] && ln -sfn ../mail spool/mail
	if [ -L spool/mail/mail -a "$(readlink spool/mail/mail)" = spool/mail ]; then
		# Get rid of broken symlink created by older versions of base-files.
		rm spool/mail/mail
	fi
	cd ..

	install -dm1777 tmp
	install -dm1777 var/tmp

}

case "${ACTION}" in
pre)
	echo "Creating system directories/symlinks..."
	make_system_dirs
	;;
post)
	echo "Creating system directories/symlinks..."
	make_system_dirs
	# Enable shadow passwd/groups.
	if [ -x bin/pwconv -a -x bin/grpconv -a "$(id -u)" -eq 0 ]; then
		pwconv && grpconv
	fi
	;;
esac