Re: [fuse-devel] What to return on EOF?

[John M. <jo...@jm...>]

On 2011.12.05, at 23:09 , Goswin von Brederlow wrote:

> when I run "cat file" fuse reads in the file in nice big 128k chunks up
> to the size of the file (which happens to be a multiple to 128k). But
> then fuse does one more read of 4096 byte beyond the end of the file.
> 
> What am I supposed/allowed to return then in the lowlevel interface?

> 1) fuse_reply_buf(req, buf, 0);
> 2) fuse_reply_buf(req, NULL, 0);
> 3) fuse_reply_err(req, ESUCCESS);

Use 1. Why wouldn't you always return the number of bytes available at the offset requested into a valid buffer? Doesn't that make your code simpler? I wouldn't think it is safe to assume that 2 will always work unless the interface documentation makes it explicitly allowed.

John.

--
John Muir - jo...@jm...