Re: [fuse-devel] how to implement the setattr for file write ?

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

>    I am building a new fuse fs, and i am having a small problem.
> 
>    compiling and installing fuse is ok. running examples too.
> 
>    I want to have writable files on my file system, and it seems that
> none of the examples fs in the distro comes with this feature ( well,
> perhaps it does and i am not using it ... ). Running the hello ( or
> fusexmp ) for example
> 
>   ./hello -d /tmp/fuse/
> 
>   and then
> 
>   echo "hi" > /tmp/fuse
>   bash: /tmp/fuse/hello : Function not implemented
> 
>   and then i notice that what is acctually missing is an
> implementation of the SETATTR at some point ...

SETATTR is actually 4 different methods rolled into one: chmod, chown,
truncate and utime.  You need to implement at least truncate() for
open(... O_TRUNC) to work.

Miklos