diff options
| author | David Carlier <[email protected]> | 2018-12-09 06:29:17 +0000 |
|---|---|---|
| committer | David Carlier <[email protected]> | 2018-12-09 06:29:17 +0000 |
| commit | f585eb9043bece953f304e2b0cd2ca328144c9df (patch) | |
| tree | a749f13f747949effc225b1450449f0728ff827a /src/lib/utils | |
| parent | c7a44f7b76fda9d633e6007238f5c23292226c34 (diff) | |
Few features added for BSD.
explicit_bzero/explicit_memset since quite a time.
getentropy exists for FreeBSD, but only from 12.x.
Diffstat (limited to 'src/lib/utils')
| -rw-r--r-- | src/lib/utils/os_utils.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/lib/utils/os_utils.cpp b/src/lib/utils/os_utils.cpp index 6bebbab58..77be98dc6 100644 --- a/src/lib/utils/os_utils.cpp +++ b/src/lib/utils/os_utils.cpp @@ -54,13 +54,16 @@ void secure_scrub_memory(void* ptr, size_t n) #elif defined(BOTAN_TARGET_OS_HAS_EXPLICIT_BZERO) ::explicit_bzero(ptr, n); +#elif defined(BOTAN_TARGET_OS_HAS_EXPLICIT_MEMSET) + (void)::explicit_memset(ptr, 0, n); + #elif defined(BOTAN_USE_VOLATILE_MEMSET_FOR_ZERO) && (BOTAN_USE_VOLATILE_MEMSET_FOR_ZERO == 1) /* Call memset through a static volatile pointer, which the compiler should not elide. This construct should be safe in conforming compilers, but who knows. I did confirm that on x86-64 GCC 6.1 and Clang 3.8 both create code that saves the memset address in the - data segment and uncondtionally loads and jumps to that address. + data segment and unconditionally loads and jumps to that address. */ static void* (*const volatile memset_ptr)(void*, int, size_t) = std::memset; (memset_ptr)(ptr, 0, n); |