How to tell if the lib uses /dev/random or /dev/urandom?

[JoHuang]

Hi

My docker file is FROM node:8-alpine. I would like to make sure which random the lib compiled. How to check it?

Thanks, Jo

[paixaop]

This is a libsodium setting. From the change log:

• The JavaScript target doesn't require /dev/urandom or an external randombytes() implementation any more. Other minor Emscripten-related improvements have been made in order to support libsodium.js
• Custom randombytes implementations do not need to provide their own implementation of randombytes_uniform() any more. randombytes_stir() and randombytes_close() can also be NULL pointers if they are not required.
• On Linux, getrandom(2) is being used instead of directly accessing /dev/urandom, if the kernel supports this system call.