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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2021-03-04 19:22:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2021-03-04 20:43:22 +0000 |
commit | 22c74419e2c258319bc723351876604b3304604b (patch) | |
tree | 8c799a78d53f67388fdf42900657eda617c1306a /src/memzero.c | |
parent | Initial commit. (diff) | |
download | dnscap-upstream/2.0.0+debian.tar.xz dnscap-upstream/2.0.0+debian.zip |
Adding upstream version 2.0.0+debian.upstream/2.0.0+debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/memzero.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/memzero.c b/src/memzero.c new file mode 100644 index 0000000..98a3c0b --- /dev/null +++ b/src/memzero.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2016-2021, OARC, Inc. + * 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. + * + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 + * COPYRIGHT HOLDER 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 "config.h" + +#if defined(__FreeBSD__) +#include <strings.h> +#elif defined(__OpenBSD__) +#include <string.h> +#else +#ifndef __STDC_WANT_LIB_EXT1__ +#define __STDC_WANT_LIB_EXT1__ 1 +#endif +#include <string.h> +#endif + +void dnscap_memzero(void* const pnt, const size_t len) +{ +#if defined(__FreeBSD__) || defined(__OpenBSD__) + explicit_bzero(pnt, len); +#elif defined(__STDC_LIB_EXT1__) + memset_s(pnt, 0, len); +#else + volatile unsigned char* volatile pnt_ = (volatile unsigned char* volatile)pnt; + size_t i = (size_t)0U; + + while (i < len) { + pnt_[i++] = 0U; + } +#endif +} |