[klmr]

> … at Google, which i suspect is one of the companies you are referring to.

Just to clarify: no, I was referring to companies which are using products from the company behind cunoFS, and which share the actual code base of the functional interposition. My point is that while this technique is complex and brittle in general, this specific code-base is incredibly battle-tested and has proved itself even in fairly arcane configurations.

You’re definitely right about there being some amount of resistance, but functional interposition offers some compelling advantages over all alternative solutions in terms of ease of use and unparalleled performance.