Exploring Rust's standard library: system calls and errors - Federico's Blog

In this post I'll show you the code path that Rust takes inside its standard library when you open a file. I wanted to learn how Rust handles system calls and errno, and all the little subtleties of the POSIX API. This is what I learned! The C side of things When you open a file, or create a socket, or do anything else that returns an object that can be accessed like a file, you get a file descrip