On 1.09.21 г. 20:01, Omar Sandoval wrote: > From: Boris Burkov <borisb@xxxxxx> > > The new format privileges the BTRFS_SEND_A_DATA attribute by > guaranteeing it will always be the last attribute in any command that > needs it, and by implicitly encoding the data length as the difference > between the total command length in the command header and the sizes of > the rest of the attributes (and of course the tlv_type identifying the > DATA attribute). To parse the new stream, we must read the tlv_type and > if it is not DATA, we proceed normally, but if it is DATA, we don't > parse a tlv_len but simply compute the length. > > In addition, we add some bounds checking when parsing each chunk of > data, as well as for the tlv_len itself. > > Signed-off-by: Boris Burkov <boris@xxxxxx> Reviewed-by: Nikolay Borisov <nborisov@xxxxxxxx>
