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/* Copyright (c) 2015, Vsevolod Stakhov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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 ''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 AUTHOR 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 "cryptobox.h"
struct rspamd_cryptobox_config {
gboolean has_sse3;
gboolean has_avx;
gboolean has_avx2;
};
#ifdef HAVE_WEAK_SYMBOLS
__attribute__((weak)) void
_dummy_symbol_to_prevent_lto(void * const pnt, const size_t len)
{
(void) pnt;
(void) len;
}
#endif
void
rspamd_explicit_memzero(void * const pnt, const gsize len)
{
#if defined(HAVE_MEMSET_S)
if (memset_s (pnt, (rsize_t) len, 0, (rsize_t) len) != 0) {
g_assert (0);
}
#elif defined(HAVE_EXPLICIT_BZERO)
explicit_bzero (pnt, len);
#elif defined(HAVE_WEAK_SYMBOLS)
memset (pnt, 0, len);
_dummy_symbol_to_prevent_lto (pnt, len);
#else
volatile unsigned char *pnt_ = (volatile unsigned char *) pnt;
gsize i = (gsize) 0U;
while (i < len) {
pnt_[i++] = 0U;
}
#endif
}
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