I am working on a large kernel module which had just come out of a large (and fruitful) internal API refactoring exercise. I now want to go through and cull the unused functions.

It turns out, all that is needed is the readelf utility (part of binutils package).

I am having a problem getting openssl to verify a signature that I generated from a smartcard. I decided to step through the openssl code to see what it’s actually doing when I call RSA_verify()… but I didn’t feel like rebuilding openssl.