[syslinux] Patch sensible callback framework

[Steffen Winterfeldt]

On Tue, 27 Apr 2010, H. Peter Anvin wrote:

> d) I suspect we need to pass a few options to the callback.  In particular, 
> we should have a user argument (typically a void *) which is passed in at 
> register_callback() time, and probably information from the invocation point, 
> e.g. the file descriptor/file pointer.

Would it be possible to make the chunk size configurable? At least the 1MB
used in code is way too big.


Steffen