#!/bin/sh

if test `id -u` -ne 0
then
    echo "$0 must be run as root."
    return
fi

ROOT=test_environment

check_mount() {
    if mountpoint "$ROOT$1" > /dev/null
    then
        echo "$ROOT$1 already mounted."
    else
        mkdir -p "$ROOT$1"
        mount -o bind "$1" "$ROOT$1"
    fi
}

check_mount /proc
check_mount /sys
check_mount /dev
check_mount /dev/pts