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| author | Jakub Hrozek <jhrozek@redhat.com> | 2017-02-23 20:55:05 +0100 |
|---|---|---|
| committer | Jakub Hrozek <jhrozek@redhat.com> | 2017-03-27 09:53:08 +0200 |
| commit | c194e8d7cad0184d710d9979e9f12d5cfe176f4a (patch) | |
| tree | 675e0cf4acd9c4ab6b84c3cc22a76eb4ca2fc61f /src/util/util_safealign.h | |
| parent | 24889dc5e7eb7bc992ab0fa05edfdfa1d157131a (diff) | |
| download | sssd-c194e8d7cad0184d710d9979e9f12d5cfe176f4a.tar.gz sssd-c194e8d7cad0184d710d9979e9f12d5cfe176f4a.tar.xz sssd-c194e8d7cad0184d710d9979e9f12d5cfe176f4a.zip | |
UTIL: Add SAFEALIGN_COPY_UINT8_CHECK
This macro will be used later in the KCM code
Reviewed-by: Michal Židek <mzidek@redhat.com>
Reviewed-by: Simo Sorce <simo@redhat.com>
Diffstat (limited to 'src/util/util_safealign.h')
| -rw-r--r-- | src/util/util_safealign.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/util/util_safealign.h b/src/util/util_safealign.h index 0d9a579cd..57f04a17d 100644 --- a/src/util/util_safealign.h +++ b/src/util/util_safealign.h @@ -130,6 +130,12 @@ safealign_memcpy(void *dest, const void *src, size_t n, size_t *counter) safealign_memcpy(dest, src, srclen, pctr); \ } while(0) +#define SAFEALIGN_COPY_UINT8_CHECK(dest, src, len, pctr) do { \ + if ((*(pctr) + sizeof(uint8_t)) > (len) || \ + SIZE_T_OVERFLOW(*(pctr), sizeof(uint8_t))) { return EINVAL; } \ + safealign_memcpy(dest, src, sizeof(uint8_t), pctr); \ +} while(0) + /* Aliases for backward compatibility. */ #define SAFEALIGN_SET_VALUE SAFEALIGN_SETMEM_VALUE #define SAFEALIGN_SET_INT64 SAFEALIGN_SETMEM_INT64 |