memfd: An example of Haskell and C

Today I'm talking about my 'memfd' library, a concise example of FFI in Haskell.

This article is installment two of two. Part one laid out some important concepts, and this part goes into the inner workings of the memfd library to show how Haskell FFI works.

I had been reading Drew DeVault’s free book, The Wayland Protocol (which I recommend if you’re interested in Wayland). When it comes time to show how to allocate a shared memory …