move system_config to dns::system

easytier/src/dns/system/mod.rs

@@ -0,0 +1,20 @@
+#[cfg(target_os = "linux")]
+pub mod linux;
+
+#[cfg(target_os = "windows")]
+pub mod windows;
+
+#[cfg(all(target_os = "macos", not(feature = "macos-ne")))]
+pub mod darwin;
+
+#[derive(Default, Debug)]
+pub struct OSConfig {
+    pub nameservers: Vec<String>,
+    pub search_domains: Vec<String>,
+    pub match_domains: Vec<String>,
+}
+
+pub trait SystemConfig: Send + Sync {
+    fn set_dns(&self, cfg: &OSConfig) -> std::io::Result<()>;
+    fn close(&self) -> std::io::Result<()>;
+}