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misc: Use memset_s if available for explicit_bzero

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Useful on OSX where memset_s is available.

Signed-off-by: Alberto Aguirre <albaguirre@gmail.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Alberto Aguirre
2018-03-02 15:01:00 -06:00
committed by Andreas Schneider
parent dd20253fec
commit 3fa0e3959c
3 changed files with 8 additions and 0 deletions
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src/misc.c
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@@ -1055,11 +1055,15 @@ int ssh_match_group(const char *group, const char *object)
#if !defined(HAVE_EXPLICIT_BZERO)
void explicit_bzero(void *s, size_t n)
{
#if defined(HAVE_MEMSET_S)
memset_s(s, n, '\0', n);
#else
memset(s, '\0', n);
#if defined(HAVE_GCC_VOLATILE_MEMORY_PROTECTION)
/* See http://llvm.org/bugs/show_bug.cgi?id=15495 */
__asm__ volatile("" : : "g"(s) : "memory");
#endif /* HAVE_GCC_VOLATILE_MEMORY_PROTECTION */
#endif
}
#endif /* !HAVE_EXPLICIT_BZERO */