arlad/abuf.h

   1 /*
   2  * Copyright (c) 1995 - 2000, 2002, 2004-2006 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /* $Id$ */
  35
  36 #ifndef _ABUF_H_
  37 #define _ABUF_H_
  38
  39 #include <fbuf.h>
  40 #include <rx/rx.h>
  41
  42 int abuf_create(fbuf *f, FCacheEntry *entry, size_t len, fbuf_flags flags);
  43 int abuf_truncate(FCacheEntry *entry, size_t new_len);
  44 int abuf_truncate_block(FCacheEntry *entry, uint64_t offset, uint64_t blocklen);
  45 int abuf_purge(FCacheEntry *entry);
  46 int abuf_end(fbuf *fbuf);
  47
  48 size_t fbuf_len(fbuf *f);
  49 void *fbuf_buf(fbuf *f);
  50
  51 int copyrx2cache(struct rx_call *call, FCacheEntry *entry, off_t off, off_t len);
  52 int copycache2rx(FCacheEntry *entry, struct rx_call *call, off_t off, off_t len);
  53
  54 #endif /* _ABUF_H_ */