#define SHA1_HASH_SIZE 20
-extern const u8 empty_file_sha1sum[SHA1_HASH_SIZE];
-
-static inline bool is_empty_file_hash(const u8 hash[SHA1_HASH_SIZE])
-{
- return memcmp(hash, empty_file_sha1sum, SHA1_HASH_SIZE) == 0;
-}
-
static inline void copy_hash(u8 dest[SHA1_HASH_SIZE],
const u8 src[SHA1_HASH_SIZE])
{