klogd -c1 # TODO: This should be even earlier.  Can it go on the kernel command line?

mountroot()
{
  openvt -c 13 sh

  mkfifo "$MENUFIFO"
  samizdat_install_udev_rules

  if [ "${nbdroot%%,*}" ]; then
      (. common.sh
       sh /scripts/local-top/nbd >/dev/null 2>&1;
       bootdone nbd-script) &
  fi

  if ! cdrom_has_keys && keys_via_network; then
      bootwait nbd-script
      wait_for_gnupghome_tar "$tftp_key_server"
  fi

  bootwait samizdat-gpg
  bootmenu
  bootwait root-mounted
  chvt 1
}

cdrom_has_keys()
{
    [ ! "$BOOTIF" ] || return
    bootwait samizdat-cdrom
    [ -d /cdrom/gnupghome ]
}

# Sets $tftp_key_server or returns false.
keys_via_network()
{
    [ "${nbdroot%%,*}" ] || return
    local arg cmdline
    read cmdline < /proc/cmdline
    for arg in $cmdline; do
        case "$arg" in
            netkeys)
                tftp_key_server="${nbdroot%%/*}"
                return 0
            ;;
            netkeys=*)
                tftp_key_server="${arg#netkeys=}"
                return 0
            ;;
        esac
    done
    return 1
}

wait_for_gnupghome_tar()
{
  local tftp_server="$1"
  [ -e /gnupghome.tar ] && return
  echo -n Waiting to receive GPG keys through the network...
  (while ! tftp -g -r gnupghome.tar -l /gnupghome.tar.$$ "$tftp_server" 2>/dev/null; do
    sleep 1;
    echo -n .
  done
  mv /gnupghome.tar.$$ /gnupghome.tar)
  echo '  done.'
  (. common.sh && . btrfs-create.sh && init_gpg)
}

samizdat_install_udev_rules()
{
  mkdir -p /etc/udev/rules.d
  echo 'ACTION=="add", SUBSYSTEM=="block", RUN+="/bin/grok-block $env{DEVNAME}"' \
    > /etc/udev/rules.d/z00_blockdev_mountroot.rules

  # 'udevadm trigger --action=add' does not work here; need to restard udevd
  # first. not sure why
  samizdat_restart_udev

  udevadm trigger -s block --action add
}

samizdat_restart_udev()
{
  local LOG_DIR=/run/initramfs/samizdat/log
  mkdir -p "$LOG_DIR"
  killall systemd-udevd 2>/dev/null
  /lib/systemd/systemd-udevd --resolve-names=never --debug >$LOG_DIR/udevd-systemd.log 2>&1 &
  udevadm hwdb --update  # rule is not executed by 'udevadm trigger' otherwise.  not sure why
}


# TODO: do not duplicate these functions from common.sh

export MENUFIFO=/menu.fifo

addmenu()
{
  cat <<END >>$MENUFIFO # mind the tabs
setItem "$1" "dummy" "$2" "$3"
END
}

menutitle()
{
  printf 'setTitle "%s"\n' "$1" >>$MENUFIFO
  printf 'setWelcomeText "%s"\n' "$2" >>$MENUFIFO
}

bootmenu()
{
  OpenVT -f -c 7 -- dynmenu "$MENUFIFO" &&
  chvt 7 &&
  menutitle 'Samizdat\n\nAs the Internet develops there are\ntransitions in the management arrangements.\nThe time has come to take\na small step in one of those transitions.' 'Choose an installation target.'
# menutitle 'Samizdat\nfreedom from surveillance\nno trusted authorities' 'Choose an installation target.'
  addmenu "ramdisk" "[ Boot to RAM without installing anything ]" "menu-select boot-ram"
}

bootwait()
{
  mkdir -p /bootwait
  local i=$#; while [ $i -gt 0 ]; do
    i=$((i-1))
    local f="$1"; shift; set -- "$@" "/bootwait/$f"
  done
  wait_for_files "$@"
}