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#!/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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