overlayfs implementation

extra/pre-build.d/usr/lib/initcpio/hooks/livecd

@@ -1,8 +1,8 @@
 # vim: set ft=sh:
 
 run_cleanuphook () {
-        msg ":: Mounting aufs on / with tmpfs=rw, ${root}=ro ..."
-        modprobe aufs
+        msg ":: Mounting OverlayFS on / with tmpfs=rw, ${root}=ro ..."
+        modprobe overlay
 
 	echo "Now attempting aufs mount..."
 
@@ -10,6 +10,6 @@ run_cleanuphook () {
 	mount --move /new_root /new_root.hw
 	mkdir /dev/shm
 	mount -t tmpfs none /dev/shm
-	mount -t aufs none /new_root -o dirs=/dev/shm=rw:/new_root.hw=ro -o noatime
+	mount -t overlay overlay -olowerdir=/new_root.hw,upperdir=/new_root,workdir=/dev/shm -o noatime
 	pkill -9 dropbear #kill SSH (in preparation for the live system starting ssh on port 22
 }

extra/pre-build.d/usr/lib/initcpio/install/livecd

@@ -5,6 +5,7 @@ build()
 	add_module 'squashfs'
 	add_module 'loop'
 	add_module 'aufs'
+	add_module 'overlay'
 
         add_binary "sed"
         add_binary "pkill"
@@ -16,6 +17,6 @@ build()
 help() 
 {
         cat <<HELPEOF
-Mount a squashed flat-file directory with AUFS3 on /
+Mount a squashed flat-file directory with OverlayFS on /
 HELPEOF
 }