New rename(2) function

[Earnie Boyd]

Quoting Igor Peshansky <pechtcha@cs.nyu.edu>:

> On Tue, 7 Aug 2007, Eric Blake wrote:
>
>> Also, the check for link count >= 2 might also be optimized to skip
>> directories (whose link count is always > 1, but since directories can't
>> be hard-linked, it is not worth looking up their id).
>
> Does POSIX mandate that directories cannot be hard-linked?  I think NTFS
> can create hard links to directories, and reparse points can be used as
> hard links.

Hard links are not allowed for directories in NTFS.  Junctions (reparse 
points) are more like symlinks for directories but cannot be used for 
files.

Earnie