From c70525edd757583351b41f6f00d7f94fd892bbfa Mon Sep 17 00:00:00 2001
From: Tails developers <amnesia@boum.org>
Date: Wed, 23 Nov 2011 11:16:43 +0100
Subject: [PATCH] Making persistent-read-only work for home-rw overlays.

---
 scripts/live | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/scripts/live b/scripts/live
index c28314f..a8ac678 100755
--- a/scripts/live
+++ b/scripts/live
@@ -1578,7 +1578,17 @@ setup_unionfs ()
 
 		if [ -b "${homecow}" ]
 		then
-			mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
+			if [ -z "${PERSISTENT_READONLY}" ]
+			then
+				mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
+			else
+				homerw="/cow/home"
+			        homero="/$(basename ${homecow})-backing"
+				homemountpoint="${rootmnt}/home"
+				mkdir -p ${homerw} ${homero} ${homemountpoint}
+				mount -t $(get_fstype "${homecow}") -o ro "${homecow}" "${homero}"
+				mount -t "${UNIONTYPE}" -o "noatime,${noxino_opt}dirs=${homerw}=rw:${homero}=${roopt}" "${UNIONTYPE}" "${homemountpoint}"
+			fi
 			export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
 		else
 			log_warning_msg "Unable to find the persistent home medium"
-- 
2.1.4