I got it slightly wrong.
One can have hardlinks to a directory without cycles provided that one
does not have hardlinks from the children of that directory to any file
not a child of that directory. (Mountpoints currently implement that
restriction.)
Question: can one implement that lesser restriction above with elegant
code? Is the greater restriction below easier to code? (If no to the
first and yes to the second is correct, then I can accept the greater
restriction described below.)
One can have hardlinks to directories
without cycles provided that one does not allow any child of the
directory to have a hardlink.
Hans
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