Add a knob to avoid the unmounting of some points.

conf.d/Makefile

@@ -1,5 +1,5 @@
 DIR=	${CONFDIR}
-CONF=	bootmisc fsck hostname local net urandom
+CONF=	bootmisc fsck hostname local localmount net urandom
 
 MK=	../mk
 include ${MK}/os.mk

conf.d/localmount

@@ -0,0 +1,3 @@
+# Stop the unmounting of certain points.
+# This could be useful for some NFS related work.
+#no_umounts="/dir1:/var/dir2"

init.d/halt.sh.in

@@ -4,6 +4,7 @@
 
 . @SYSCONFDIR@/init.d/functions.sh
 . "${RC_LIBDIR}"/sh/rc-functions.sh
+[ -r @SYSCONFDIR@/conf.d/localmount ] && . @SYSCONFDIR@/conf.d/localmount
 [ -r @SYSCONFDIR@/rc.conf ] && . @SYSCONFDIR@/rc.conf
 
 # Support LiveCD foo
@@ -79,6 +80,20 @@ if [ "${RC_UNAME}" = "Linux" ]; then
 	# We need the do_unmount function
 	. "${RC_LIBDIR}"/sh/rc-mount.sh
 	eindent
+	no_umounts_r="/|/dev|/dev/.*|${RC_SVCDIR}"
+	# RC_NO_UMOUNTS is an env var that can be set by plugins
+	OIFS=${IFS} SIFS=${IFS-y}
+	IFS=$IFS:
+	for x in ${no_umounts} ${RC_NO_UMOUNTS}; do
+		no_umounts_r="${no_umounts_r}|${x}"
+	done
+	if [ "${SIFS}" = "y" ]; then
+		IFS=$OIFS
+	else
+		unset IFS
+	fi
+	no_umounts_r="${no_umounts_r}|/proc|/proc/.*|/sys|/sys/.*"
+	no_umounts_r="^(${no_umounts})$"
 	fs=
 	for x in ${net_fs_list}; do
 		fs="${fs}${fs:+|}${x}"
@@ -86,7 +101,6 @@ if [ "${RC_UNAME}" = "Linux" ]; then
 	[ -n "${fs}" ] && fs="^(${fs})$"
 	do_unmount "mount -n -o remount,ro" \
 		--skip-point-regex "^(/dev|/dev/.*|/proc|/proc/.*|/sys|/sys/.*)$" \
-		--skip-options-regex "^ro" \
 		${fs:+--skip-fstype-regex} ${fs} --nonetdev
 	eoutdent
 	eend $?

init.d/localmount.in

@@ -30,13 +30,13 @@ start()
 stop()
 {
 	# We never unmount / or /dev or $RC_SVCDIR
-	local x= no_umounts="/|/dev|/dev/.*|${RC_SVCDIR}"
+	local x= no_umounts_r="/|/dev|/dev/.*|${RC_SVCDIR}"
 
 	# RC_NO_UMOUNTS is an env var that can be set by plugins
 	OIFS=${IFS} SIFS=${IFS-y}
 	IFS=$IFS:
 	for x in ${no_umounts} ${RC_NO_UMOUNTS}; do
-		no_umounts="${no_umounts}|${x}"
+		no_umounts_r="${no_umounts_r}|${x}"
 	done
 	if [ "${SIFS}" = "y" ]; then
 		IFS=$OIFS
@@ -45,9 +45,9 @@ stop()
 	fi
 
 	if [ "${RC_UNAME}" = "Linux" ]; then
-		no_umounts="${no_umounts}|/proc|/proc/.*|/sys|/sys/.*"
+		no_umounts_r="${no_umounts_r}|/proc|/proc/.*|/sys|/sys/.*"
 	fi
-	no_umounts="^(${no_umounts})$"
+	no_umounts_r="^(${no_umounts})$"
 
 	# Flush all pending disk writes now
 	sync; sync
@@ -63,7 +63,7 @@ stop()
 	# Umount loopback devices
 	einfo "Unmounting loopback devices"
 	eindent
-	do_unmount "umount -d" --skip-point-regex "${no_umounts}" \
+	do_unmount "umount -d" --skip-point-regex "${no_umounts_r}" \
 		--node-regex "^/dev/loop"
 	eoutdent