openwrt-owl/package/base-files/files/lib/firstboot/20_has_mini_fo

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#!/bin/sh
# Copyright (C) 2006-2010 OpenWrt.org
# Copyright (C) 2010 Vertical Communications
check_for_overlay() {
if ! grep -qE '(mini_fo|overlay)' /proc/filesystems; then
boot_run_hook no_fo
exit 1
fi
}
boot_hook_add switch2jffs check_for_overlay