Function if_nametoindex

crates/stdlib/src/socket.rs:3084–3094

(name: FsPath, vm: &VirtualMachine)

    #[cfg(not(target_os = "redox"))]
    #[pyfunction]
    fn if_nametoindex(name: FsPath, vm: &VirtualMachine) -> PyResult<IfIndex> {
        let name = name.to_cstring(vm)?;
        // in case 'if_nametoindex' does not set errno
        crate::common::os::set_errno(libc::ENODEV);
        let ret = unsafe { c::if_nametoindex(name.as_ptr() as _) };
        if ret == 0 {
            Err(vm.new_last_errno_error())
        } else {
            Ok(ret)
        }
    }

    #[cfg(not(target_os = "redox"))]
    #[pyfunction]