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));
    }

##</code><code>##

    if ((new->pid = fork()) < 0) {
        return errno;
    }

##</code><code>##

ERRORS
      If fork() fails, errno is set to one of the following values.

           [EAGAIN]       The system-imposed limit on the total number of
                          processes under execution would be exceeded.

           [EAGAIN]       The system-imposed limit on the total number of
                          processes under execution by a single user would
                          be exceeded.