Checkroot script modified to avoid spots which cause NFSROOT boots with rdonly / to fail

checkroot-modified (text/plain), 3.26 KB, created by aero1967 on 2007-07-25 03:06:27 UTC

#!/sbin/runscript
# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

depend() {
	before *
}

start() {
	local retval=0

	if [[ ! -f /fastboot && -z ${CDBOOT} ]] \
	&& ! is_net_fs / && ! is_union_fs / ; then
		if touch -c / >& /dev/null ; then
			ebegin "Remounting root filesystem read-only"
			mount -n -o remount,ro /
			eend $?
		fi

		if [[ -f /forcefsck ]] || get_bootparam "forcefsck" ; then
			ebegin "Checking root filesystem (full fsck forced)"
			fsck -C -a -f /
			# /forcefsck isn't deleted because checkfs needs it.
			# it'll be deleted in that script.
			retval=$?
		else
			# Obey the fs_passno setting for / (see fstab(5))
			# - find the / entry
			# - make sure we have 6 fields
			# - see if fs_passno is something other than 0
			if [[ -n $(awk '($1 ~ /^(\/|UUID|LABEL)/ && $2 == "/" \
			                && NF == 6 && $6 != 0) { print }' /etc/fstab) ]]
			then
				ebegin "Checking root filesystem"
				fsck -C -T -a /
				retval=$?
			else
				ebegin "Skipping root filesystem check (fstab's passno == 0)"
				retval=0
			fi
		fi

		if [[ ${retval} -eq 0 ]] ; then
			eend 0
		elif [[ ${retval} -eq 1 ]] ; then
			ewend 1 "Filesystem repaired"
		elif [[ ${retval} -eq 2 || ${retval} -eq 3 ]] ; then
			ewend 1 "Filesystem repaired, but reboot needed!"
			echo -ne "\a"; sleep 1; echo -ne "\a"; sleep 1
			echo -ne "\a"; sleep 1; echo -ne "\a"; sleep 1
			ewarn "Rebooting in 10 seconds ..."
			sleep 10
			einfo "Rebooting"
			/sbin/reboot -f
		else
			if [[ ${RC_FORCE_AUTO} == "yes" ]] ; then
				eend 2 "Rerunning fsck in force mode"
				fsck -y -C -T /
			else
				eend 2 "Filesystem couldn't be fixed :("
				/sbin/sulogin ${CONSOLE}
			fi
			einfo "Unmounting filesystems"
			/bin/mount -a -o remount,ro &> /dev/null
			einfo "Rebooting"
			/sbin/reboot -f
		fi
	fi

	# Should we mount root rw ?  the touch check is to see if the / is
	# already mounted rw in which case there's nothing for us to do
	if mount -vf -o remount / 2> /dev/null | \
	   awk '{ if ($6 ~ /rw/) exit 0; else exit 1; }' && \
	   ! touch -c / >& /dev/null
	then
		ebegin "Skipping code to remount root fs as r+w"
		eend 0
		#ebegin "Remounting root filesystem read/write"
		#mount -n -o remount,rw / &> /dev/null
		#if [[ $? -ne 0 ]] ; then
		#	eend 2 "Root filesystem could not be mounted read/write :("
		#	if [[ ${RC_FORCE_AUTO} != "yes" ]] ; then
		#		/sbin/sulogin ${CONSOLE}
		#	fi
		#else
		#	eend 0
		#fi
	fi

			ewarn "Skipping /etc/mtab initialization (ro root?)"
			return 0


#	if [[ ${BOOT} == "yes" ]] ; then
#		local x=
#		local y=

		#
		# Create /etc/mtab
		#

		# Don't create mtab if /etc is readonly
#		if ! touch /etc/mtab 2> /dev/null ; then
#			ewarn "Skipping /etc/mtab initialization (ro root?)"
#			return 0
#		fi

		# Clear the existing mtab
#		> /etc/mtab

		# Add the entry for / to mtab
#		mount -f /

		# Don't list root more than once
#		awk '$2 != "/" {print}' /proc/mounts >> /etc/mtab

		# Now make sure /etc/mtab have additional info (gid, etc) in there
#		for x in $(awk '{ print $2 }' /proc/mounts | sort -u) ; do
#			for y in $(awk '{ print $2 }' /etc/fstab) ; do
#				if [[ ${x} == ${y} ]] ; then
#					mount -f -o remount $x
#					continue
#				fi
#			done
#		done

		# Remove stale backups
#		rm -f /etc/mtab~ /etc/mtab~~
#	fi
}


# vim:ts=4