isomnt - mount iso files easily on macos 10.13 and greater

isomnt.sh

#!/usr/bin/env bash
function initVars () {
  ENVFILE=${ISOMNT_ENVFILE:-"${HOME}/bin/.isomnt_env"}
  if [[ -s "${ENVFILE}" ]]; then
    # Import all the environment variables for envfile
    source "${ENVFILE}"
  fi
  MNT_BASE_DIR=${MNT_BASE_DIR:-/var/tmp}
  MNT_SUB_DIR=${MNT_SUB_DIR:-iso_mnt}
  MNT_DIR_SUFFIX=${MNT_DIR_SUFFIX:-$(date +"%Y%m%H%M%S")}
  MNT_DIR_PATH="${MNT_BASE_DIR}/${MNT_SUB_DIR}_${MNT_DIR_SUFFIX}"
  KEXT_CD9660=${KEXT_CD9660:-"/System/Library/Extensions/cd9660.kext"}
  ISO_FILE="${ISO_FILE:-""}"
}
function checkDeps () {
  local binDeps
  binDeps=(
    date
    hdiutil
    mount
    find
    grep
    awk
  )
  for bin in "${binDeps[@]}"; do
    command -v "${bin}" &>/dev/null || { echo >&2 "Required binary ${bin} not found exiting."; exit 1; }
  done
}
function hdAttach () {
  DEV_DISK="$(hdiutil attach -nomount "${ISO_FILE}" | awk '{print $1}')"
}
function mntIso () {
  mkdir -p "${MNT_DIR_PATH}"
  if mount -t cd9660 "${DEV_DISK}" "${MNT_DIR_PATH}"; then
    echo "Mounted ISO: ${ISO_FILE} DISK: ${DEV_DISK} PATH: ${MNT_DIR_PATH}"
  else
    echo "Failed to Mount ISO: ${ISO_FILE} DISK: ${DEV_DISK} PATH: ${MNT_DIR_PATH}"
  fi
}
function manageKext () {
  local cmd="${1}"
  sudo kmutil ${cmd} -p ${KEXT_CD9660}
}

function umntIso () {
  OG_MNT_DIR_PATH=$(mount | grep "${DEV_DISK}" | awk '{ print $3}')
  if umount "${DEV_DISK}" && sleep 3 && hdiutil detach "${DEV_DISK}"; then
    echo "Unmounted ISO: ${ISO_FILE} DISK: ${DEV_DISK} PATH: ${OG_MNT_DIR_PATH}"
    echo "removing empty directory: ${OG_MNT_DIR_PATH}"
    find "${OG_MNT_DIR_PATH}" -maxdepth 0 -empty -exec rm -rf {} \;
    echo "Unloading Kext: ${KEXT_CD9660}"
    manageKext "unload"
  else
    echo "Failed to Unmount ISO: ${ISO_FILE} DISK: ${DEV_DISK} PATH: ${OG_MNT_DIR_PATH}"
  fi
}

function main () {
  local cmd

  if [[ $# -eq 2 ]] && [[ -f "${2}" ]]; then
    initVars
    checkDeps
    cmd="$1"
    ISO_FILE="${2}"
  else
    echo "Usage:"
    echo "${0} mount|umount /path/to/isofile.iso"
    echo "arg1=${1} arg2=${2}"
    exit 1
  fi
  if [[ "${cmd}" == "mount" ]] || [[ "${cmd}" == "umount" ]]; then
    manageKext "load"
    hdAttach
    [[ ! -b "${DEV_DISK}" ]] && { echo "${DEV_DISK} not a block device"; exit 1; }
    [[ "${cmd}" == "mount" ]] && mntIso
    [[ "${cmd}" == "umount" ]] && umntIso
  fi
}
main "$@"

# Mount 
isomnt mount ~/Downloads/dd-sata_sil-2.4-2.el8_1.elrepo.iso
# Unmunt
isomnt umount ~/Downloads/dd-sata_sil-2.4-2.el8_1.elrepo.iso