ENVSYS_GETDICTIONARY
IOCTL_STRUCT_CONV_TO(ENVSYS_GETDICTIONARY, plistref);
case ENVSYS_GETDICTIONARY:
ENVSYS_GETDICTIONARY,
ENVSYS_GETDICTIONARY, &kdict);
rval = prop_dictionary_recv_ioctl(fd, ENVSYS_GETDICTIONARY, &dict);