[fuse-devel] Re: lock problem and strace saver

[Csaba H. <csa...@cr...>]

On 2006-01-30, <bel...@gm...> <bel...@gm...> wrote:
> I have an unusual behaviour with mutt_dotlock.
>   mutt_dotlock file => fail
> and
>   strace mutt_dotlock file => succed

I have a guess.

Isn't mutt_dotlock setuid? By default, you are the only one who can use
the fs (so that you can't spy on other unsuspicious users I/O requests
via the fs daemon). A setuid process will be refused for this reason. 
OTOH, stracing strips off the setuid bit, so then you are allowed to
enter the realm.

Did you try "-o allow_root" ?

Csaba