xref: /minix3/external/bsd/bind/dist/lib/isc/bufferlist.c (revision 00b67f09dd46474d133c95011a48590a8e8f94c7)
1*00b67f09SDavid van Moolenbroek /*	$NetBSD: bufferlist.c,v 1.4 2014/12/10 04:37:59 christos Exp $	*/
2*00b67f09SDavid van Moolenbroek 
3*00b67f09SDavid van Moolenbroek /*
4*00b67f09SDavid van Moolenbroek  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
5*00b67f09SDavid van Moolenbroek  * Copyright (C) 1999-2001  Internet Software Consortium.
6*00b67f09SDavid van Moolenbroek  *
7*00b67f09SDavid van Moolenbroek  * Permission to use, copy, modify, and/or distribute this software for any
8*00b67f09SDavid van Moolenbroek  * purpose with or without fee is hereby granted, provided that the above
9*00b67f09SDavid van Moolenbroek  * copyright notice and this permission notice appear in all copies.
10*00b67f09SDavid van Moolenbroek  *
11*00b67f09SDavid van Moolenbroek  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12*00b67f09SDavid van Moolenbroek  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13*00b67f09SDavid van Moolenbroek  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14*00b67f09SDavid van Moolenbroek  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15*00b67f09SDavid van Moolenbroek  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16*00b67f09SDavid van Moolenbroek  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17*00b67f09SDavid van Moolenbroek  * PERFORMANCE OF THIS SOFTWARE.
18*00b67f09SDavid van Moolenbroek  */
19*00b67f09SDavid van Moolenbroek 
20*00b67f09SDavid van Moolenbroek /* Id: bufferlist.c,v 1.17 2007/06/19 23:47:17 tbox Exp  */
21*00b67f09SDavid van Moolenbroek 
22*00b67f09SDavid van Moolenbroek /*! \file */
23*00b67f09SDavid van Moolenbroek 
24*00b67f09SDavid van Moolenbroek #include <config.h>
25*00b67f09SDavid van Moolenbroek 
26*00b67f09SDavid van Moolenbroek #include <stddef.h>
27*00b67f09SDavid van Moolenbroek 
28*00b67f09SDavid van Moolenbroek #include <isc/buffer.h>
29*00b67f09SDavid van Moolenbroek #include <isc/bufferlist.h>
30*00b67f09SDavid van Moolenbroek #include <isc/util.h>
31*00b67f09SDavid van Moolenbroek 
32*00b67f09SDavid van Moolenbroek unsigned int
isc_bufferlist_usedcount(isc_bufferlist_t * bl)33*00b67f09SDavid van Moolenbroek isc_bufferlist_usedcount(isc_bufferlist_t *bl) {
34*00b67f09SDavid van Moolenbroek 	isc_buffer_t *buffer;
35*00b67f09SDavid van Moolenbroek 	unsigned int length;
36*00b67f09SDavid van Moolenbroek 
37*00b67f09SDavid van Moolenbroek 	REQUIRE(bl != NULL);
38*00b67f09SDavid van Moolenbroek 
39*00b67f09SDavid van Moolenbroek 	length = 0;
40*00b67f09SDavid van Moolenbroek 	buffer = ISC_LIST_HEAD(*bl);
41*00b67f09SDavid van Moolenbroek 	while (buffer != NULL) {
42*00b67f09SDavid van Moolenbroek 		REQUIRE(ISC_BUFFER_VALID(buffer));
43*00b67f09SDavid van Moolenbroek 		length += isc_buffer_usedlength(buffer);
44*00b67f09SDavid van Moolenbroek 		buffer = ISC_LIST_NEXT(buffer, link);
45*00b67f09SDavid van Moolenbroek 	}
46*00b67f09SDavid van Moolenbroek 
47*00b67f09SDavid van Moolenbroek 	return (length);
48*00b67f09SDavid van Moolenbroek }
49*00b67f09SDavid van Moolenbroek 
50*00b67f09SDavid van Moolenbroek unsigned int
isc_bufferlist_availablecount(isc_bufferlist_t * bl)51*00b67f09SDavid van Moolenbroek isc_bufferlist_availablecount(isc_bufferlist_t *bl) {
52*00b67f09SDavid van Moolenbroek 	isc_buffer_t *buffer;
53*00b67f09SDavid van Moolenbroek 	unsigned int length;
54*00b67f09SDavid van Moolenbroek 
55*00b67f09SDavid van Moolenbroek 	REQUIRE(bl != NULL);
56*00b67f09SDavid van Moolenbroek 
57*00b67f09SDavid van Moolenbroek 	length = 0;
58*00b67f09SDavid van Moolenbroek 	buffer = ISC_LIST_HEAD(*bl);
59*00b67f09SDavid van Moolenbroek 	while (buffer != NULL) {
60*00b67f09SDavid van Moolenbroek 		REQUIRE(ISC_BUFFER_VALID(buffer));
61*00b67f09SDavid van Moolenbroek 		length += isc_buffer_availablelength(buffer);
62*00b67f09SDavid van Moolenbroek 		buffer = ISC_LIST_NEXT(buffer, link);
63*00b67f09SDavid van Moolenbroek 	}
64*00b67f09SDavid van Moolenbroek 
65*00b67f09SDavid van Moolenbroek 	return (length);
66*00b67f09SDavid van Moolenbroek }
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