finis implementing netns add

src/main.rs

@@ -1,23 +1,49 @@
 use std::fs::create_dir;
-use std::io::Result;
+use std::io::{Result, ErrorKind};
+use std::fs::File;
+use sys_mount::{
+    Mount,
+    MountFlags
+};
 
 const PATH_MAX:u32 = 4096;
 const NET_NS_DIR:&str = "/var/run/netns";
-fn main() -> std::io::Result<()> {
+const PROC_NS_DIR:&str = "/proc/self/ns/net";
+
+fn main() -> Result<()> {
     create_ns_dir()?;
-    println!("Hello World");
+    let nsdir = format!("{}/{}",NET_NS_DIR,"fake-net");
+    File::create(nsdir.clone())?;
+    bind_ns_file(nsdir)?;
+    println!("end");
     Ok(())
 }
 
-fn create_ns_dir() -> std::io::Result<()> {
+fn create_ns_dir() -> Result<()> {
     match create_dir(NET_NS_DIR) {
-        _ => {
-            println!("entra 1")
-            Ok(())
-        },
-        Err(e) if e.kind() != std::io::ErrorKind::AlreadyExists => {
-            println!("entra 2")
+        Err(e) if e.kind() != ErrorKind::AlreadyExists => {
+            println!("entra 2");
             Err(e)
         },
+        _ => {
+            println!("entra 1");
+            Ok(())
+        },
     }
 }
+
+fn bind_ns_file(ns_file: String) -> Result<()> {
+    match create_mount(ns_file) {
+        Ok(_mount) => {
+            println!("mount succes");
+            Ok(())
+        },
+        Err(e) => Err(e),
+    }
+}
+
+fn create_mount(ns_file: String) -> std::io::Result<Mount> {
+    Mount::builder()
+        .flags(MountFlags::BIND)
+        .mount(PROC_NS_DIR, ns_file)
+}