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From: DENIEL Philippe <philippe.deniel@CEA.FR>
To: xfs@oss.sgi.com
Subject: xfsprogs/libhandle : How to get the handle for a symbolic link ?
Date: Tue, 01 Jun 2010 13:48:22 +0200	[thread overview]
Message-ID: <4C04F386.908@cea.fr> (raw)

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

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             reply	other threads:[~2010-06-01 11:45 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-01 11:48 DENIEL Philippe [this message]
2010-06-01 23:29 ` xfsprogs/libhandle : How to get the handle for a symbolic link ? Dave Chinner
2010-06-02  7:20   ` DENIEL Philippe
2010-06-02 10:06     ` Christoph Hellwig

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