1 /* 2 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 10 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 11 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 12 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 13 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 14 * PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 /* $Id: bufferlist.c,v 1.3 2020/02/25 05:00:43 jsg Exp $ */ 18 19 /*! \file */ 20 21 #include <stddef.h> 22 23 #include <isc/buffer.h> 24 #include <isc/bufferlist.h> 25 #include <isc/util.h> 26 27 unsigned int 28 isc_bufferlist_usedcount(isc_bufferlist_t *bl) { 29 isc_buffer_t *buffer; 30 unsigned int length; 31 32 REQUIRE(bl != NULL); 33 34 length = 0; 35 buffer = ISC_LIST_HEAD(*bl); 36 while (buffer != NULL) { 37 length += isc_buffer_usedlength(buffer); 38 buffer = ISC_LIST_NEXT(buffer, link); 39 } 40 41 return (length); 42 } 43 44 unsigned int 45 isc_bufferlist_availablecount(isc_bufferlist_t *bl) { 46 isc_buffer_t *buffer; 47 unsigned int length; 48 49 REQUIRE(bl != NULL); 50 51 length = 0; 52 buffer = ISC_LIST_HEAD(*bl); 53 while (buffer != NULL) { 54 length += isc_buffer_availablelength(buffer); 55 buffer = ISC_LIST_NEXT(buffer, link); 56 } 57 58 return (length); 59 } 60