rc = ap_os_create_privileged_process(r, procnew, command, argv, env,
                                         procattr, p);

    if (rc != APR_SUCCESS) {
        /* Bad things happened. Everyone should have cleaned up. */
        ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_TOCLIENT, rc, r,
                      "couldn't create child process: %d: %s", rc,
                      apr_filename_of_pathname(r->filename));
    }