hard links: how to tell with system call under BSD4.3?

[mlevin at jade.tufts.edu]

  Is there any way, from a system call on BSD4.3, to determine if a
file is a hard link?  I know lstat() will describe soft links, but
none of my Unix books seem to say how one can figure out if a file is
a hard link or not. Is this impossible? Please email me at
mlevin at jade.tufts.edu with any responses. Thanks in advance.

Mike Levin