Single-user actions on reboot

I'm wondering if there's a canonical way to schedule a command to run 
automatically during the next boot cycle, but before going multiuser.

This would be useful, for example, to run certain tunefs commands on /, 
which can only be done in single-user mode, on remotely managed systems.

Running things after going multiuser is easy, of course, but not 
sufficient for tunefs commands that cannot be performed on a filesystem 
mounted rw.

Thanks...

-- 
Life is a game.  Play hard.  Play fair.  Have fun.