RandyX v0.1.1:

- fixed bufferoverflow issue

Author: git-user-cpp

os/kernel/core/vga_output.rs

@@ -1,4 +1,11 @@
-pub fn vga_output_message(message: &[u8]) {
+pub fn vga_output_message(_message: &[u8]) {
+    const MAX_LEN: usize = 32;
+    let mut message = _message;
+
+    if message.len() > MAX_LEN {
+        message = b"Too many bytes to output";
+    }
+
     let vga_buffer = 0xb8000 as *mut u8;
 
     for(i, &byte) in message.iter().enumerate(){

os/main.rs

@@ -28,10 +28,10 @@ fn panic(_info: &PanicInfo) -> ! {
     loop{}
 }
 
-static HELLO: &[u8] = b"RandyX is running...";
+static RUNNING_MSG: &[u8] = b"RandyX is running...";
 #[no_mangle]
 pub extern "C" fn _start() -> ! {
-    vga_output_message(HELLO);
+    vga_output_message(RUNNING_MSG);
 
     loop{}
 }