openrc/init.d/mount-ro.in

#!@PREFIX@/sbin/runscript
# Copyright 2007-2009 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=
	m="$m|/bin|/sbin|/lib|/libexec"
	# RC_NO_UMOUNTS is an env var that can be set by plugins
	local OIFS=$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)$"
	do_unmount "umount -r" \
		--skip-point-regex "$m" \
		${fs:+--skip-fstype-regex} $fs --nonetdev
	eoutdent
	eend $?
}