#!/bin/sh

output=$(mktemp --tmpdir $(basename $0).XXXXXXXXXX)
critical_count=0
ok_count=0

trap "rm -f $output" EXIT

for mountpoint in $@; do
    if findmnt -O ro --noheadings "$mountpoint" 1>/dev/null 2>&1; then
        echo "CRITICAL - $mountpoint" >> "$output"
	critical_count=$(( critical_count + 1))
    else
        echo "OK - $mountpoint" >> "$output"
	ok_count=$(( ok_count + 1))
    fi
done

total_count=$(( ok_count + critical_count ))

if [ $ok_count -eq  $total_count ]; then
     printf "OK - %d/%d no read-only mountpoint\n\n" "$ok_count" "$total_count"
     cat "$output"
     exit 0
else
    printf "CRITICAL - %d/%d read-only mountpoint\n\n" "$critical_count" "$total_count"
    cat "$output"
    exit 2 
fi