Re: [RFC PATCH 0/5] Shadow directories

[Jan Engelhardt]

On Oct 19 2007 05:32, David Newall wrote:
>
> The claim is wrong.  UNIX systems have traditionally allowed the
> superuser to create hard links to directories.  See link(2) for
> 2.10BSD
> <http://www.freebsd.org/cgi/man.cgi?query=link&sektion=2&manpath=2.10+BSD>.
> Having got that wrong throws doubt on the argument; perhaps a path
> can simultaneously be a file and a directory.

But hell will break lose if you allow hardlinking directories.

mkdir /tmp/a
ln /tmp/a /tmp/a/b

And you would not be able to rmdir /tmp/a/b because the directory is
not empty (it contains "b" [full path: /tmp/a/b/b]).
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