1/* 2 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") 3 * Copyright (C) 1999-2001 Internet Software Consortium. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15 * PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18/* $Id: bufferlist.c,v 1.17 2007/06/19 23:47:17 tbox Exp $ */ 19 20/*! \file */ 21 22#include <config.h> 23 24#include <stddef.h> 25 26#include <isc/buffer.h> 27#include <isc/bufferlist.h> 28#include <isc/util.h> 29 30unsigned int 31isc_bufferlist_usedcount(isc_bufferlist_t *bl) { 32 isc_buffer_t *buffer; 33 unsigned int length; 34 35 REQUIRE(bl != NULL); 36 37 length = 0; 38 buffer = ISC_LIST_HEAD(*bl); 39 while (buffer != NULL) { 40 REQUIRE(ISC_BUFFER_VALID(buffer)); 41 length += isc_buffer_usedlength(buffer); 42 buffer = ISC_LIST_NEXT(buffer, link); 43 } 44 45 return (length); 46} 47 48unsigned int 49isc_bufferlist_availablecount(isc_bufferlist_t *bl) { 50 isc_buffer_t *buffer; 51 unsigned int length; 52 53 REQUIRE(bl != NULL); 54 55 length = 0; 56 buffer = ISC_LIST_HEAD(*bl); 57 while (buffer != NULL) { 58 REQUIRE(ISC_BUFFER_VALID(buffer)); 59 length += isc_buffer_availablelength(buffer); 60 buffer = ISC_LIST_NEXT(buffer, link); 61 } 62 63 return (length); 64} 65