#!/bin/sh
# /mnt/shared is an alias for ophub's /mnt/<disk-partition-4> mount.
resolved="$(readlink -f /mnt/shared)" || exit 1
awk -v path="$resolved" '
	$2 == path && $3 == "ext4" && $1 ~ /^\/dev\// && $4 ~ /(^|,)rw(,|$)/ { found=1 }
	END { exit !found }
' /proc/mounts
