xfsprogs/libhandle : How to get the handle for a symbolic link ?

[DENIEL Philippe]

Hi,

I am currently developing a user space nfs server with various backends. 
One of this backend module use xfsprogss's libhandle to implement XFS 
support. I could do almost everything with open_by_handle and 
fd_to_handle, used jointly with ATFILE_SOURCE functions, but I do have a 
problem with symbolic links. To build an xfs object's handle, I get its 
parent handle (now problem to this) then I call "openat" to get the fd 
to the object before calling fd_to_handle. This works ok, but not for 
symbolic link : the openat with follow the link. I added the O_NOFOLLOW 
flag to openat, but now openat return ELOOP instead.
I know there is a readlink_by_handle function in libhandle. How could I 
build the related handle to be used as argument to it (I mean, how to 
build a handle that refers to the symlink itself, not the object it 
points to).

    Regards

       Philippe