Refactor kernel message file handling to improve readability and add debugging output

src/main.rs

@@ -3,14 +3,18 @@ use std::env;
 use std::fs::File;
 use std::io::BufRead;
 use std::io::Write;
+use std::io::Seek;
+use std::io::SeekFrom;
 
 fn main() {
     println!("Reading kernel messages...");
 
-    let kmsg_file =
+    let mut kmsg_file =
         File::open_buffered(env::var("PHENIX_KMSG").unwrap_or(String::from("/dev/kmsg")))
             .expect("Failed to open /dev/kmsg");
 
+
+    kmsg_file.seek(SeekFrom::End(0)).expect("Failed to seek to end");
     let lines = kmsg_file.lines();
     for line in lines {
         match line {
@@ -21,6 +25,7 @@ fn main() {
 }
 
 fn manage_line(line: String) {
+    dbg!(&line);
     if let Some((prefix, line)) = line.split_once(";") {
         if line.ends_with("PCIe link lost") {
             println!("PCIe link lost {prefix}");