wip

tun/src/unix/apple/sys.rs

@@ -0,0 +1,22 @@
+pub const UTUN_CONTROL_NAME: &str = "com.apple.net.utun_control";
+pub const UTUN_OPT_IFNAME: libc::c_int = 2;
+
+#[repr(C)]
+pub struct ifreq {}
+
+/// Copied from https://github.com/rust-lang/socket2/blob/61314a231f73964b3db969ef72c0e9479df320f3/src/sys/unix.rs#L168-L178
+/// getsockopt is not exposed by socket2
+#[macro_export]
+macro_rules! syscall {
+    ($fn: ident ( $($arg: expr),* $(,)* ) ) => {{
+        #[allow(unused_unsafe)]
+        let res = unsafe { libc::$fn($($arg, )*) };
+        if res == -1 {
+            Err(std::io::Error::last_os_error())
+        } else {
+            Ok(res)
+        }
+    }};
+}
+
+pub use syscall;