Quotes of the week

Also that (as Lennart points out in his followup post) that the local machine may say 'yes, here's a BSD lock' and then you run it on a machine importing the same filesystem over NFS and it will say 'yes, here's a BSD lock' and you've got locks both times, but the server silently 'upgraded' the BSD lock to a POSIX lock for you, so you've now locked the same file twice and you can't tell.

You know your locking system is broken when a program can't even interoperate with other instances of *itself*.