Re: LFS Support for Sendfile

[Andrew Morton]

Dan Maas wrote:
> 
> >     [sendfile(2)] as defined does not support LFS.
> >
> > I wonder does it really need to?  I mean, a loop calling sendfile for
> > 2GB (or whatever) at a time is almost as good, if not better in some
> > ways.
> 
> The 'count' parameter is not the problem, it's the 'offset'. You can't send
> any data beyond 2GB from the beginning of the file...
> 
> And in fact just two days ago I was in a situation where this would have
> been desirable - I was sending parts of a captured DV video stream (the file
> was 6GB)...
> 

We need a sendfile64() system call.  It's really simple,  but
nobody did it.

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