Re: Patch to allow pg_filedump to support reading of pg_filenode.map

I think you should be able to avoid crashing if passed a non-relmapper file.
Make sure not to loop over more mappings than exist in the relmapper file of
the given size.

I guess you should warn if the number of mappings is too large for the file's
size.  And then "cap" the number of mappings to the maximum possible number.

-- 
Justin