udisks rules to let wheel group users mount drives without authentication

50-udisks.rules

#Create the file /etc/polkit-1/rules.d/50-udisks.rules with permissions 644, and with the following contents:

polkit.addRule(function(action, subject) {
  var YES = polkit.Result.YES;
  var permission = {
    // only required for udisks2:
    "org.freedesktop.udisks2.filesystem-mount": YES,
    "org.freedesktop.udisks2.encrypted-unlock": YES,
    "org.freedesktop.udisks2.eject-media": YES,
    "org.freedesktop.udisks2.power-off-drive": YES,
    // Dolphin specific
    "org.freedesktop.udisks2.filesystem-mount-system": YES,
    // required for udisks2 if using udiskie from another seat (e.g. systemd):
    "org.freedesktop.udisks2.filesystem-mount-other-seat": YES,
    "org.freedesktop.udisks2.encrypted-unlock-other-seat": YES,
    "org.freedesktop.udisks2.eject-media-other-seat": YES,
    "org.freedesktop.udisks2.power-off-drive-other-seat": YES
  };
  if (subject.isInGroup("wheel")) {
    return permission[action.id];
  }
});