[cyberpunk]

That manpage is an import from freebsd, not part of base -- As far as I can see on my system it's not there:

OpenBSD:

    $ man 2 sendfile
    man: No entry for sendfile in section 2 of the manual.

    $ grep -rni sendfile /usr/include | wc -l
       0

FreeBSD:

    # grep -rni sendfile /usr/include | wc -l
          30

edit: typo

[dallbee]

On Openbsd you have sosplice, which can be used much like sendfile.

[cyberpunk]

Oh neat, I had no idea that existed. Will have a play, thanks for the tip!

[shuss]

OK, noted. Thanks for sharing.