Function sock_from_raw

crates/stdlib/src/socket.rs:3261–3275

(fileno: RawSocket, vm: &VirtualMachine)

    }

    fn sock_from_raw(fileno: RawSocket, vm: &VirtualMachine) -> PyResult<Socket> {
        let invalid = {
            cfg_if::cfg_if! {
                if #[cfg(windows)] {
                    fileno == INVALID_SOCKET
                } else {
                    fileno < 0
                }
            }
        };
        if invalid {
            return Err(vm.new_value_error("negative file descriptor"));
        }
        Ok(unsafe { sock_from_raw_unchecked(fileno) })
    }
    /// SAFETY: fileno must not be equal to INVALID_SOCKET
    unsafe fn sock_from_raw_unchecked(fileno: RawSocket) -> Socket {
        #[cfg(unix)]