On Wed, Apr 10, 2013 at 04:11:48PM +0800, Dong Xu Wang wrote:
> +The Header is included in the first bytes:
> +(HEADER_SIZE is defined in 40-43 bytes.)
> + Byte 0 - 3: magic
> + add-cow magic string ("ACOW").
> +
> + 4 - 7: backing file name offset
> + Offset in the add-cow file at which the backing
> + file name is stored (NB: The string is not
> + lNUL-terminated).
s/lNUL/NUL/
> + 24 - 31: features
> + Bitmask of features. If a feature bit is set
> + but not recognized, the add-cow file should be
> + dropped. They are not used in now.
"If a feature bit is set but not recognized, the opening the add-cow file must
fail. No features bits are currently defined."
