runtime-rs: support dragonball and runtime-binary

Fixes: #3785
Signed-off-by: Quanwei Zhou <quanweiZhou@linux.alibaba.com>
Signed-off-by: Zhongtao Hu <zhongtaohu.tim@linux.alibaba.com>

src/runtime-rs/crates/shim/Cargo.toml

@@ -22,8 +22,8 @@ log = "0.4.14"
 nix = "0.23.1"
 protobuf = "2.27.0"
 sha2 = "=0.9.3"
-slog = {version = "2.7.0", features = ["std", "release_max_level_trace", "max_level_trace"]}
-slog-async = "2.7.0"
+slog = {version = "2.5.2", features = ["std", "release_max_level_trace", "max_level_trace"]}
+slog-async = "2.5.2"
 slog-scope = "4.4.0"
 slog-stdlog = "4.1.0"
 thiserror = "1.0.30"

src/runtime-rs/crates/shim/src/panic_hook.rs

@@ -4,10 +4,12 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use std::{boxed::Box, ops::Deref};
+use std::{boxed::Box, fs::OpenOptions, io::Write, ops::Deref};
 
 use backtrace::Backtrace;
 
+const KMESG_DEVICE: &str = "/dev/kmsg";
+
 // TODO: the Kata 1.x runtime had a SIGUSR1 handler that would log a formatted backtrace on
 // receiving that signal. It could be useful to re-add that feature.
 pub(crate) fn set_panic_hook() {
@@ -36,6 +38,20 @@ pub(crate) fn set_panic_hook() {
             "A panic occurred at {}:{}: {}\r\n{:?}", filename, line, cause, bt_data
         );
 
+        // print panic log to dmesg
+        // The panic log size is too large to /dev/kmsg, so write by line.
+        if let Ok(mut file) = OpenOptions::new().write(true).open(KMESG_DEVICE) {
+            file.write_all(
+                format!("A panic occurred at {}:{}: {}", filename, line, cause).as_bytes(),
+            )
+            .ok();
+            let lines: Vec<&str> = bt_data.split('\n').collect();
+            for line in lines {
+                file.write_all(line.as_bytes()).ok();
+            }
+
+            file.flush().ok();
+        }
         std::process::abort();
     }));
 }