diff options
Diffstat (limited to 'include/linux/overflow.h')
| -rw-r--r-- | include/linux/overflow.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/overflow.h b/include/linux/overflow.h index 15eb85de9226..659045046468 100644 --- a/include/linux/overflow.h +++ b/include/linux/overflow.h @@ -284,11 +284,15 @@ static inline __must_check size_t array3_size(size_t a, size_t b, size_t c) return bytes; } -static inline __must_check size_t __ab_c_size(size_t n, size_t size, size_t c) +/* + * Compute a*b+c, returning SIZE_MAX on overflow. Internal helper for + * struct_size() below. + */ +static inline __must_check size_t __ab_c_size(size_t a, size_t b, size_t c) { size_t bytes; - if (check_mul_overflow(n, size, &bytes)) + if (check_mul_overflow(a, b, &bytes)) return SIZE_MAX; if (check_add_overflow(bytes, c, &bytes)) return SIZE_MAX; |