| /* ==================================================================== |
| * 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 <stdlib.h> |
| |
| #include "apr_errno.h" |
| |
| #include "ap_buckets.h" |
| |
| AP_DECLARE_NONSTD(apr_status_t) ap_bucket_split_shared(ap_bucket *a, apr_off_t point) |
| { |
| ap_bucket *b; |
| ap_bucket_shared *ad, *bd; |
| ap_bucket_refcount *r; |
| |
| if (point < 0 || point > a->length) { |
| return APR_EINVAL; |
| } |
| |
| b = malloc(sizeof(*b)); |
| if (b == NULL) { |
| return APR_ENOMEM; |
| } |
| bd = malloc(sizeof(*bd)); |
| if (bd == NULL) { |
| free(b); |
| return APR_ENOMEM; |
| } |
| *b = *a; |
| ad = a->data; |
| b->data = bd; |
| *bd = *ad; |
| |
| r = ad->data; |
| r->refcount += 1; |
| |
| a->length = point; |
| ad->end = ad->start + point; |
| b->length -= point; |
| bd->start += point; |
| |
| AP_BUCKET_INSERT_AFTER(a, b); |
| |
| return APR_SUCCESS; |
| } |
| |
| AP_DECLARE(void *) ap_bucket_destroy_shared(void *data) |
| { |
| ap_bucket_shared *s = data; |
| ap_bucket_refcount *r = s->data; |
| |
| free(s); |
| r->refcount -= 1; |
| if (r->refcount == 0) { |
| return r; |
| } |
| else { |
| return NULL; |
| } |
| } |
| |
| AP_DECLARE(ap_bucket *) ap_bucket_make_shared(ap_bucket *b, void *data, |
| apr_off_t start, apr_off_t end) |
| { |
| ap_bucket_shared *s; |
| ap_bucket_refcount *r = data; |
| |
| s = malloc(sizeof(*s)); |
| if (s == NULL) { |
| return NULL; |
| } |
| |
| b->data = s; |
| b->length = end - start; |
| /* caller initializes the type field and function pointers */ |
| s->start = start; |
| s->end = end; |
| s->data = r; |
| r->refcount = 1; |
| /* caller initializes the rest of r */ |
| |
| return b; |
| } |