From 021fa432447bd7b447ca39738040698db39d751b Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@tele2.at>
Date: Mon, 5 Nov 2018 15:28:18 +0100
Subject: Initial commit

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
---
 scripts/overlay.sh | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100755 scripts/overlay.sh

(limited to 'scripts/overlay.sh')

diff --git a/scripts/overlay.sh b/scripts/overlay.sh
new file mode 100755
index 0000000..090671c
--- /dev/null
+++ b/scripts/overlay.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+lower=/cfg/preserve/${1}
+upper=/cfg/overlay/${1}
+work=/cfg/overlay/${1}_work
+target=${2}
+
+if [ ! -d "$target" ]; then
+	exit
+fi
+
+if [ -d "$lower" ]; then
+	if [ -d "$upper" ]; then
+		mkdir -p "$work"
+		mount -t overlay overlay \
+			-olowerdir=${lower},upperdir=${upper},workdir=${work} \
+			${target}
+	else
+		mount --bind "$lower" "$target"
+	fi
+fi
-- 
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