1*6fbc243fSSascha Wildner /*-
2*6fbc243fSSascha Wildner * Copyright (c) 2017 Juniper Networks. All rights reserved.
3*6fbc243fSSascha Wildner *
4*6fbc243fSSascha Wildner * Redistribution and use in source and binary forms, with or without
5*6fbc243fSSascha Wildner * modification, are permitted provided that the following conditions
6*6fbc243fSSascha Wildner * are met:
7*6fbc243fSSascha Wildner * 1. Redistributions of source code must retain the above copyright
8*6fbc243fSSascha Wildner * notice, this list of conditions and the following disclaimer.
9*6fbc243fSSascha Wildner * 2. Redistributions in binary form must reproduce the above copyright
10*6fbc243fSSascha Wildner * notice, this list of conditions and the following disclaimer in the
11*6fbc243fSSascha Wildner * documentation and/or other materials provided with the distribution.
12*6fbc243fSSascha Wildner *
13*6fbc243fSSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
14*6fbc243fSSascha Wildner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15*6fbc243fSSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16*6fbc243fSSascha Wildner * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
17*6fbc243fSSascha Wildner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18*6fbc243fSSascha Wildner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19*6fbc243fSSascha Wildner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20*6fbc243fSSascha Wildner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21*6fbc243fSSascha Wildner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22*6fbc243fSSascha Wildner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23*6fbc243fSSascha Wildner * SUCH DAMAGE.
24*6fbc243fSSascha Wildner *
25*6fbc243fSSascha Wildner * $FreeBSD: head/lib/libc/string/memset_s.c 322427 2017-08-12 15:18:17Z kib $
26*6fbc243fSSascha Wildner */
27*6fbc243fSSascha Wildner
28*6fbc243fSSascha Wildner #include <errno.h>
29*6fbc243fSSascha Wildner #include <stddef.h>
30*6fbc243fSSascha Wildner #include <stdint.h>
31*6fbc243fSSascha Wildner #include <string.h>
32*6fbc243fSSascha Wildner #include "libc_private.h"
33*6fbc243fSSascha Wildner
34*6fbc243fSSascha Wildner /* ISO/IEC 9899:2011 K.3.7.4.1 */
35*6fbc243fSSascha Wildner errno_t
memset_s(void * s,rsize_t smax,int c,rsize_t n)36*6fbc243fSSascha Wildner memset_s(void *s, rsize_t smax, int c, rsize_t n)
37*6fbc243fSSascha Wildner {
38*6fbc243fSSascha Wildner errno_t ret;
39*6fbc243fSSascha Wildner rsize_t lim;
40*6fbc243fSSascha Wildner unsigned char v;
41*6fbc243fSSascha Wildner volatile unsigned char *dst;
42*6fbc243fSSascha Wildner
43*6fbc243fSSascha Wildner ret = EINVAL;
44*6fbc243fSSascha Wildner lim = n < smax ? n : smax;
45*6fbc243fSSascha Wildner v = (unsigned char)c;
46*6fbc243fSSascha Wildner dst = (unsigned char *)s;
47*6fbc243fSSascha Wildner if (s == NULL) {
48*6fbc243fSSascha Wildner __throw_constraint_handler_s("memset_s : s is NULL", ret);
49*6fbc243fSSascha Wildner } else if (smax > RSIZE_MAX) {
50*6fbc243fSSascha Wildner __throw_constraint_handler_s("memset_s : smax > RSIZE_MAX",
51*6fbc243fSSascha Wildner ret);
52*6fbc243fSSascha Wildner } else if (n > RSIZE_MAX) {
53*6fbc243fSSascha Wildner __throw_constraint_handler_s("memset_s : n > RSIZE_MAX", ret);
54*6fbc243fSSascha Wildner } else {
55*6fbc243fSSascha Wildner while (lim > 0)
56*6fbc243fSSascha Wildner dst[--lim] = v;
57*6fbc243fSSascha Wildner if (n > smax) {
58*6fbc243fSSascha Wildner __throw_constraint_handler_s("memset_s : n > smax",
59*6fbc243fSSascha Wildner ret);
60*6fbc243fSSascha Wildner } else {
61*6fbc243fSSascha Wildner ret = 0;
62*6fbc243fSSascha Wildner }
63*6fbc243fSSascha Wildner }
64*6fbc243fSSascha Wildner return (ret);
65*6fbc243fSSascha Wildner }
66