Re: [fuse-devel] Odd write usage

[Miklos S. <mi...@sz...>]

On Wed, 23 Jul 2008, Daniel Benamy wrote:
> Sorry I wasn't clear. We have an existing linux kernel vmblock
> driver/fs which uses this interface. If you're really interested,
> check out
> http://sourceforge.net/project/showfiles.php?group_id=204462

Ah, I see.  Well, it might work most of the time with fuse, and the
comand constants being around 100 may make it even likely to work.
But in reality it will only work assuming that:

 a) the string will fit in that 98 or so bytes

 b) the unused bytes in that range happen to fall within mapped
 virtual memory

And b) isn't guaranteed at all, unless userspace is using specially
prepared buffers.  So, my advice is to migrate to a new, sane
interface as quickly as possible.

Miklos