They are publicly available patches, but it's probably unreasonable to expect Solaris 8 binbuild users to have sendfilev.the general Solaris 8 user community (you can't even download sendfile+prerequisites without a maintenance contract last time I tried).
http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fpatches%2F111297&zon
e_32=sendfilev
At the bottom of that page is the list of required patches.
If you get the latest Solaris 8 MU set or go to Solaris 9, you should have sendfilev(). -- justin
