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| author | Pavel Filipenský <pfilipensky@samba.org> | 2022-08-08 17:47:28 +0200 |
|---|---|---|
| committer | Jule Anger <janger@samba.org> | 2022-09-19 04:02:12 +0000 |
| commit | 3d7a2a3603efcf05708b8f4078c92110fe9779a6 (patch) | |
| tree | 1f10ffcc1aa8e9a7d3f599bd2b20e56e6a873d82 /lib | |
| parent | beb63ae03b7dd98f2ed58345fc06b659ea5c11b6 (diff) | |
| download | samba-3d7a2a3603efcf05708b8f4078c92110fe9779a6.tar.gz | |
lib:replace: Add macro BURN_STR() to zero memory of a string
Signed-off-by: Pavel Filipenský <pfilipensky@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
(cherry picked from commit 8564380346ace981b957bb8464f2ecf007032062)
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/replace/replace.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/replace/replace.h b/lib/replace/replace.h index da5526c4a2f..bd7f6e53e81 100644 --- a/lib/replace/replace.h +++ b/lib/replace/replace.h @@ -865,6 +865,17 @@ typedef unsigned long long ptrdiff_t ; #define BURN_PTR_SIZE(x, s) memset_s((x), (s), 0, (s)) /** + * Explicitly zero data in string. This is guaranteed to be not optimized + * away. + */ +#define BURN_STR(x) do { \ + if ((x) != NULL) { \ + size_t s = strlen(x); \ + memset_s((x), s, 0, s); \ + } \ + } while(0) + +/** * Work out how many elements there are in a static array. */ #ifdef ARRAY_SIZE |