#!/bin/bash
# shellcheck disable=SC2181 disable=SC1091 disable=SC2236
# shellcheck disable=SC2068

source "${TMPDIR}/androot.source"
source "${TMPDIR}/androot.env"
log_diag "mount is now executing, with arguments \"${*}\""

function mount_fail() {
  echo "#### mount ${1}" &>> "${TMPDIR}/androot.log"
  shift
  mount ${@} &>> "${TMPDIR}/androot.log"
  if [ ! "${?}" == "0" ]; then
    log_fail
    exit 1
  fi
}
function unmount_fail() {
  echo "#### unmount ${1}" &>> "${TMPDIR}/androot.log"
  shift
  umount ${@} &>> "${TMPDIR}/androot.log"
  if [ ! "${?}" == "0" ]; then
    log_fail
    exit 1
  fi
}

case "${1}" in
  "--mount")
    log_diag "Using mount mode"
    mkdir -p "${LOCATION}/mountdir"
    if [ "${IS_ANDROID}" == "true" ]; then
      log_exec "Remounting /data"
      mount_fail "/data (remount)" "/data" -o remount,suid,exec
      log_ok
    fi
    log_exec "Mounting rootfs"
    mount_fail "rootfs" --bind "${LOCATION}/rootfs" "${LOCATION}/mountdir" -o rw,suid,dev,exec,auto,nouser,async
    log_ok
    log_exec "Binding directories"
    mount_fail "/dev" --bind "/dev" "${LOCATION}/mountdir/dev"
    mount_fail "/dev/pts" --bind "/dev/pts" "${LOCATION}/mountdir/dev/pts"
    mount_fail "/sys" --bind "/sys" "${LOCATION}/mountdir/sys"
    mount_fail "/proc" --bind "/proc" "${LOCATION}/mountdir/proc"
    log_ok;;
  "--unmount")
    log_diag "Using unmount mode"
    log_exec "Unmounting binds"
    unmount_fail "/dev/pts" "${LOCATION}/mountdir/dev/pts"
    unmount_fail "/dev" "${LOCATION}/mountdir/dev"
    unmount_fail "/sys" "${LOCATION}/mountdir/sys"
    unmount_fail "/proc" "${LOCATION}/mountdir/proc"
    log_ok
    log_exec "Unmounting rootfs"
    unmount_fail "rootfs" "${LOCATION}/mountdir"
    log_ok;;
  *)
    log_error "--mount or --unmount required"
    exit 1;;
esac