Re: [Bug-ddrescue] A question for ddrescue code modification

[Antonio Diaz Diaz]

Hello Oleg.

Oleg Krutov wrote:
> I have an urgent need to use ddrescue for recovering data grom slightly
> encrypted disk. "Slightly" means that all data is XORed with 16-bytes wide
> string (that was done by SATA-USB bridge, and drive can be copied with a
> bridge attached but it will be very slow. Without a bridge transfer speed
> is OK but data is encrypted). So, as my C++ skill is well less average, I'd
> like to ask -- if I'll insert XOR routine into readblock() function --
> won't it break something else? i.e. is readblock() used for reading from
> source drive/file only?

"readblock" is also used by fill and generate modes. If you are going to 
hack ddrescue I guess it is better to insert the XOR routine into 
"copy_block". But are you sure that it is not better to image the drive 
"as is" and then XORing the resulting image?


Regards,
Antonio.