fix crash when rfkill dir is not present

Author: pythops

src/rfkill.rs

@@ -3,38 +3,38 @@ use std::fs;
 use crate::app::AppResult;
 
 pub fn check() -> AppResult<()> {
-    let entries = fs::read_dir("/sys/class/rfkill/")?;
+    if let Ok(entries) = fs::read_dir("/sys/class/rfkill/") {
+        for entry in entries {
+            let entry = entry?;
+            let entry_path = entry.path();
 
-    for entry in entries {
-        let entry = entry?;
-        let entry_path = entry.path();
+            if let Some(_file_name) = entry_path.file_name() {
+                let name = fs::read_to_string(entry_path.join("type"))?;
 
-        if let Some(_file_name) = entry_path.file_name() {
-            let name = fs::read_to_string(entry_path.join("type"))?;
+                if name.trim() == "bluetooth" {
+                    let state_path = entry_path.join("state");
+                    let state = fs::read_to_string(state_path)?.trim().parse::<u8>()?;
 
-            if name.trim() == "bluetooth" {
-                let state_path = entry_path.join("state");
-                let state = fs::read_to_string(state_path)?.trim().parse::<u8>()?;
-
-                // https://www.kernel.org/doc/Documentation/ABI/stable/sysfs-class-rfkill
-                match state {
-                    0 => {
-                        eprintln!(
-                            r#"
+                    // https://www.kernel.org/doc/Documentation/ABI/stable/sysfs-class-rfkill
+                    match state {
+                        0 => {
+                            eprintln!(
+                                r#"
 The bluetooth device is soft blocked
 Run the following command to unblock it
 $ sudo rfkill unblock bluetooth
                     "#
-                        );
-                        std::process::exit(1);
-                    }
-                    2 => {
-                        eprintln!("The bluetooth device is hard blocked");
-                        std::process::exit(1);
+                            );
+                            std::process::exit(1);
+                        }
+                        2 => {
+                            eprintln!("The bluetooth device is hard blocked");
+                            std::process::exit(1);
+                        }
+                        _ => {}
                     }
-                    _ => {}
+                    break;
                 }
-                break;
             }
         }
     }