ksud: Add userspace cli to load module

userspace/ksud/src/restorecon.rs

@@ -0,0 +1,15 @@
+use anyhow::ensure;
+use anyhow::Ok;
+use anyhow::Result;
+use subprocess::Exec;
+
+const SYSTEM_CON: &str = "u:object_r:system_file:s0";
+const _ADB_CON: &str = "u:object_r:adb_data_file:s0";
+
+pub fn restore_syscon(dir: &str) -> Result<()> {
+    // todo use libselinux directly
+    let cmd = format!("chcon -R {} {}", SYSTEM_CON, dir);
+    let result = Exec::shell(cmd).join()?;
+    ensure!(result.success(), "chcon for: {} failed.", dir);
+    Ok(())
+}