[Samba] Incorrect "This folder already contains a file named..." error

David Shaw dshaw at jabberwocky.com
Mon Apr 18 15:59:38 GMT 2005

I am trying to export a Fuse filesystem filesystem via Samba (Samba
3.0.7, latest CVS Fuse on kernel 2.6.10).  Fuse
(http://fuse.sourceforge.net) is a library and kernel module to allow
writing filesystems in userspace.

I'm having a problem, however, in one odd place.  Basically, the
export works, and files are readable.  However, when putting a new
file in via drag-and-drop, windows (XP) pops up a dialog saying that
the file already exists, and asking if it should it be replaced.
Needless to say, the file doesn't already exist.

I took a look at the logs and the sequence of filesystem events during
a drop looks basically like this:

  GETATTR /testfile returns ENOENT
    (20-30 getattr and getdirs for "/testfile", "/", and "/*" here -
    Samba does this for some reason)
  MKNOD /testfile
  GETATTR /testfile returns success

Now the popup happens: "This folder already contains a file named
testfile".  Along with an offer to replace the current zero-length
file with the one I'm dropping in.

"testfile" didn't exist before the drag-and-drop - something requested
the file be created after the I dropped the file in, but before the
popup happened.

I understand that there was a bug in Samba a while back that looked
like this, but it was fixed.  This problem seems to only happen with
Fuse, and using a regular filesystem works fine.  It's possible that
my filesystem program or Fuse itself is doing something unusual that
is confusing Samba.

Can someone point me in the right direction here?



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