Makes and mounts temporary encfs partition that is removed upon program exit.

encfs_tmp.sh

#!/bin/bash
# Makes and mounts temporary encfs partition that is removed upon program exit.
# Requires encfs.

set -eu -o pipefail

tmp=$(mktemp -d)
enc=${tmp}/.enc
mnt=${tmp}/mnt

encfs_stdin() { (
    secret=$(uuidgen)
    echo "p"
    echo "${secret}"
    echo "${secret}"
) }

at_exit() {
    echo "Cleanup" >&2
    rm -rf ${tmp}
}

wait_for_it() {
    echo "Waiting..." >&2
    set +o pipefail
    while ! mount | grep -q ${mnt}; do
        sleep 0.1
    done
    set -o pipefail
    echo ${mnt}
    echo "Ctrl+C to unmount and remove" >&2
}

trap at_exit EXIT
wait_for_it &
mkdir ${enc} ${mnt}
encfs_stdin | { encfs -f -S ${enc} ${mnt} > /dev/null; }
echo "Done" >&2