> The problem is that 'struct lockf' isn't defined --- in fact, I can't find
> it defined anywhere.  On 3.0, it's in sys/lockf.h; the file exists on my
> -current machines, but it doesn't define the structure.

Update your pgksrc;

Working file: sysutils/lsof/patches/patch-ad
----------------------------
revision 1.11
date: 2006/06/04 21:00:54;  author: christos;  state: Exp;  lines: +35 -19
We don't export struct lockf anymore, thus we cannot print lock info.