oldfs = fs
newfs = {}
function newfs.open(file,method)
	if method == 'r' then
		download(file)
	end
	oldHandle = oldfs.open(file,method)
	newHandle = oldHandle
	if method == 'w' or method == 'a' then
		function newHandle.close()
			oldHandle.close()
			upload(file)
		end
	end
	return newHandle
end
local h = newfs.open('test','w')
h.write('test')
h.close()