bsdtar needs --ignore-zero & --ignore-failed-read

[Tim Kientzle]

Andrew Sinclair wrote:
> 
>    I found this out when attempting to extract an archive from a CD-RW. 
> It had a few bad blocks ...  I was able to work
> around it with gtar and the --ignore-zero and --ignore-failed-read 
> options but I could not find an equivalent solution for bsdtar.
> 
>    My suggestion is to include these options in libarchive and to assert 
> --ignore-zero in bsdtar by default on plain files ...

Thanks for the suggestion; I'll see about adding
these.

I am reluctant to assert these by default, however.
Not because I expect anyone to deliberately append
anything, but because I expect there to be tar
archivers that append garbage to fill out the
final block.

Tim