62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/*
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* Copyright (c) 2016-2024 OARC, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#if defined(__FreeBSD__)
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#include <strings.h>
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#elif defined(__OpenBSD__)
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#include <string.h>
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#else
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#ifndef __STDC_WANT_LIB_EXT1__
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#define __STDC_WANT_LIB_EXT1__ 1
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#endif
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#include <string.h>
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#endif
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void dnscap_memzero(void* const pnt, const size_t len)
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{
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#if defined(__FreeBSD__) || defined(__OpenBSD__)
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explicit_bzero(pnt, len);
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#elif defined(__STDC_LIB_EXT1__)
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memset_s(pnt, 0, len);
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#else
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volatile unsigned char* volatile pnt_ = (volatile unsigned char* volatile)pnt;
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size_t i = (size_t)0U;
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while (i < len) {
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pnt_[i++] = 0U;
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}
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#endif
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}
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