Function sys_getaddrbyname 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn sys_getaddrbyname(
    name: *const c_char,
    inaddr: *mut u8,
    len: usize,
) -> i32

Available on crate features net or virtio-vsock only.

The system call sys_getaddrbyname determine the network host entry. It expects an array of u8 with a size of in_addr or of in6_addr. The result of the DNS request will be stored in this array.

Example

use hermit_abi::in_addr;
let c_string = std::ffi::CString::new("rust-lang.org").expect("CString::new failed");
let name = c_string.into_raw();
let mut inaddr: in_addr = Default::default();
let _ = unsafe {
        hermit_abi::getaddrbyname(
                name,
                &mut inaddr as *mut _ as *mut u8,
                std::mem::size_of::<in_addr>(),
        )
};

// retake pointer to free memory
let _ = CString::from_raw(name);