lockfile -- posix compliant?

[N.J. Thomas]

Can someone tell me if lockfile(1) is a POSIX-defined utility? I
couldn't tell from the man page or the source code, and I seem to be
having trouble locating info on the web.

Jens Schweikhardt's excellent page on FreeBSD POSIX Compliance:

    http://people.freebsd.org/~schweikh/posix-utilities-APR-02.html

doesn't list it, so I am inclined to say that it is not, but I wanted to
be sure.

thanks,
Thomas

-- 
N.J. Thomas
njt at ayvali.org
Etiamsi occiderit me, in ipso sperabo