1 /* $NetBSD: bufferlist.c,v 1.4 2014/12/10 04:37:59 christos Exp $ */ 2 3 /* 4 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") 5 * Copyright (C) 1999-2001 Internet Software Consortium. 6 * 7 * Permission to use, copy, modify, and/or distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17 * PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* Id: bufferlist.c,v 1.17 2007/06/19 23:47:17 tbox Exp */ 21 22 /*! \file */ 23 24 #include <config.h> 25 26 #include <stddef.h> 27 28 #include <isc/buffer.h> 29 #include <isc/bufferlist.h> 30 #include <isc/util.h> 31 32 unsigned int 33 isc_bufferlist_usedcount(isc_bufferlist_t *bl) { 34 isc_buffer_t *buffer; 35 unsigned int length; 36 37 REQUIRE(bl != NULL); 38 39 length = 0; 40 buffer = ISC_LIST_HEAD(*bl); 41 while (buffer != NULL) { 42 REQUIRE(ISC_BUFFER_VALID(buffer)); 43 length += isc_buffer_usedlength(buffer); 44 buffer = ISC_LIST_NEXT(buffer, link); 45 } 46 47 return (length); 48 } 49 50 unsigned int 51 isc_bufferlist_availablecount(isc_bufferlist_t *bl) { 52 isc_buffer_t *buffer; 53 unsigned int length; 54 55 REQUIRE(bl != NULL); 56 57 length = 0; 58 buffer = ISC_LIST_HEAD(*bl); 59 while (buffer != NULL) { 60 REQUIRE(ISC_BUFFER_VALID(buffer)); 61 length += isc_buffer_availablelength(buffer); 62 buffer = ISC_LIST_NEXT(buffer, link); 63 } 64 65 return (length); 66 } 67