# HG changeset patch
# User Pascal Bellard <pascal.bellard@slitaz.org>
# Date 1436086185 -7200
# Node ID 9a32f6e0607f69fdf17ba60c1d22e3027324e234
# Parent  e47dd81e6781dac15604832420f78e3089bd4393
init: add overlayfs support

diff -r e47dd81e6781 -r 9a32f6e0607f init
--- a/init	Sat Jul 04 22:18:55 2015 +0200
+++ b/init	Sun Jul 05 10:49:45 2015 +0200
@@ -243,7 +243,7 @@
 mod squashfs 2>/dev/null || exit
 msg aufs
 br=/mnt/.rw
-mkdir $br
+mkdir $br /mnt/.wd
 got rwdev && mnt $br && br=$br$d
 o=
 p=
@@ -259,13 +259,17 @@
 fi
 l=0
 r=
-got isofs || for i in /mnt$p/rootfs?*.gz; do
+got isofs && r=:$c || for i in /mnt$p/rootfs?*.gz; do
 	fs=${i#*root}
 	r=$r:/mnt/.$fs
 	mkdir -p /mnt/.rw/mnt/.$fs /mnt/.$fs
 	losetup $o /dev/loop$l $i
 	busybox mount -o ro -t squashfs /dev/loop$((l++)) /mnt/.$fs
 done
-mod aufs
-busybox mount -t aufs -o br=$br${r:-:$c} none /mnt
+while read type opt; do
+	mod $type && busybox mount -t $type -o $opt none /mnt && break
+done <<EOT
+aufs		br=$br$r
+overlayfs	workdir=/mnt/.wd${r/:/,lowerdir=},upperdir=$br
+EOT
 quit