Greg Stein and Dale Ghent both reminded me I forgot to add this.

/* ====================================================================

 * The Apache Software License, Version 1.1

 *

 * Copyright (c) 2000 The Apache Software Foundation.  All rights

 * reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * 3. The end-user documentation included with the redistribution,

 *    if any, must include the following acknowledgment:

 *       "This product includes software developed by the

 *        Apache Software Foundation (http://www.apache.org/)."

 *    Alternately, this acknowledgment may appear in the software itself,

 *    if and wherever such third-party acknowledgments normally appear.

 *

 * 4. The names "Apache" and "Apache Software Foundation" must

 *    not be used to endorse or promote products derived from this

 *    software without prior written permission. For written

 *    permission, please contact apache@apache.org.

 *

 * 5. Products derived from this software may not be called "Apache",

 *    nor may "Apache" appear in their name, without prior written

 *    permission of the Apache Software Foundation.

 *

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED

 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR

 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 * ====================================================================

 *

 * This software consists of voluntary contributions made by many

 * individuals on behalf of the Apache Software Foundation.  For more

 * information on the Apache Software Foundation, please see

 * <http://www.apache.org/>.

 */

#include "http_protocol.h"

#include "apr_buckets.h"

#include "apr_strings.h"

#include <stdlib.h>

#if APR_HAVE_STRINGS_H

#include <strings.h>

#endif

static apr_status_t error_read(apr_bucket *b, const char **str, 

			       apr_size_t *len, apr_read_type_e block)

{

    ap_bucket_error *e = b->data;

    *str = e->start;

    *len = b->length;

    return APR_SUCCESS;

}

AP_DECLARE(apr_bucket *) ap_bucket_make_error(apr_bucket *b, int error, 

		const char *buf, apr_pool_t *p)

{

    ap_bucket_error *h;

    h = malloc(sizeof(*h));

    if (h == NULL) {

        return NULL;

    }

    h->start = apr_psprintf(p, "%d %s", error, buf);

    b->length = strlen(h->start);

    b->type = &ap_bucket_type_error;

    b->data = h;

    return b;

}

AP_DECLARE(apr_bucket *) ap_bucket_create_error(int error, 

		const char *buf, apr_pool_t *p)

{

    apr_bucket_do_create(ap_bucket_make_error(b, error, buf, p));

}

AP_DECLARE_DATA const apr_bucket_type_t ap_bucket_type_error = {

    "ERROR", 5,

    free,

    error_read,

    apr_bucket_setaside_notimpl,

    apr_bucket_split_notimpl,

    apr_bucket_copy_notimpl

};