Function sendto

src/backend/linux_raw/net/syscalls.rs:434–475

(
    fd: BorrowedFd<'_>,
    buf: &[u8],
    flags: SendFlags,
    addr: &impl SocketAddrArg,
)

#[inline]
pub(crate) fn sendto(
    fd: BorrowedFd<'_>,
    buf: &[u8],
    flags: SendFlags,
    addr: &impl SocketAddrArg,
) -> io::Result<usize> {
    let (buf_addr, buf_len) = slice(buf);

    // SAFETY: This passes the `addr_ptr` reference to the OS which reads the
    // buffers only within the `addr_len` bound.
    unsafe {
        addr.with_sockaddr(|addr_ptr, addr_len| {
            #[cfg(not(target_arch = "x86"))]
            {
                ret_usize(syscall_readonly!(
                    __NR_sendto,
                    fd,
                    buf_addr,
                    buf_len,
                    flags,
                    raw_arg(addr_ptr as *mut _),
                    socklen_t(addr_len)
                ))
            }
            #[cfg(target_arch = "x86")]
            {
                ret_usize(syscall_readonly!(
                    __NR_socketcall,
                    x86_sys(SYS_SENDTO),
                    slice_just_addr::<ArgReg<'_, SocketArg>, _>(&[
                        fd.into(),
                        buf_addr,
                        buf_len,
                        flags.into(),
                        raw_arg(addr_ptr as *mut _),
                        socklen_t(addr_len)
                    ])
                ))
            }
        })
    }
}

#[inline]
pub(crate) unsafe fn recv(