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lib/libc/string/memset_s.c
- This file was added.
| /*- | |||||
| * Copyright (c) 2017 Juniper Networks. All rights reserved. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
| * SUCH DAMAGE. | |||||
| */ | |||||
| #include <sys/cdefs.h> | |||||
| __FBSDID("$FreeBSD$"); | |||||
| #include <errno.h> | |||||
| #include <stddef.h> | |||||
| #include <stdint.h> | |||||
| #include <string.h> | |||||
| #include "libc_private.h" | |||||
| /* ISO/IEC 9899:2011 K.3.7.4.1 */ | |||||
| errno_t | |||||
| memset_s(void *s, rsize_t smax, int c, rsize_t n) | |||||
| { | |||||
| errno_t ret; | |||||
| rsize_t lim; | |||||
| unsigned char v; | |||||
| volatile unsigned char *dst; | |||||
| ret = EINVAL; | |||||
| lim = smax; | |||||
| v = (unsigned char)c; | |||||
| dst = (unsigned char *)s; | |||||
| if (s == NULL) { | |||||
| __throw_constraint_handler_s("memset_s : s is NULL", ret); | |||||
| } else if (smax > RSIZE_MAX) { | |||||
| __throw_constraint_handler_s("memset_s : smax > RSIZE_MAX", | |||||
| ret); | |||||
| } else if (n > RSIZE_MAX) { | |||||
| __throw_constraint_handler_s("memset_s : n > RSIZE_MAX", ret); | |||||
| } else { | |||||
| if (n < smax) | |||||
| lim = n; | |||||
| while (lim > 0) | |||||
| dst[--lim] = v; | |||||
| ret = 0; | |||||
| } | |||||
| return (ret); | |||||
| } | |||||