openrc/init.d/mount-ro.in

#!@PREFIX@/sbin/runscript
# Copyright 2007-2008 Roy Marples <roy@marples.name>
# All rights reserved. Released under the 2-clause BSD license.

description="Re-mount filesytems read-only for a clean reboot."

depend()
{
	need killprocs savecache
	keyword noprefix noopenvz novserver
}

start()
{
	# Flush all pending disk writes now
	sync; sync

	ebegin "Remounting remaining filesystems read-only"
	# We need the do_unmount function
	. "${RC_LIBDIR}"/sh/rc-mount.sh
	eindent
	local m="/dev|/dev/.*|/proc|/proc.*|/sys|/sys/.*|${RC_SVCDIR}" x= fs=
	# RC_NO_UMOUNTS is an env var that can be set by plugins
	local OIFS=$IFS SIFS=${IFS-y} IFS=$IFS
	IFS=$IFS:
	for x in ${no_umounts} ${RC_NO_UMOUNTS}; do
		m="${m}|${x}"
	done
	if [ "${SIFS}" = y ]; then
		IFS=$OIFS
	else
		unset IFS
	fi
	m="^(${m})$"
	fs=
	for x in ${net_fs_list}; do
		fs="${fs}${fs:+|}${x}"
	done
	[ -n "${fs}" ] && fs="^(${fs})$"
	do_unmount "mount -n -o remount,ro" \
		--skip-point-regex "${m}" \
		${fs:+--skip-fstype-regex} ${fs} --nonetdev
	eoutdent
	eend $?
}