example(elf2uki): add example to CI

Author: tvsfx

.github/workflows/build.yml

@@ -49,6 +49,8 @@ jobs:
         # Install dependencies for build & test
         sudo apt-get update -y
         sudo apt-get install -y faketime protobuf-compiler libsgx-dcap-ql-dev clang-18 musl-tools gcc-multilib
+        # ukify tool for elf2uki
+        sudo apt install systemd-ukify
 
     - name: Setup Rust toolchain
       run: |
@@ -132,3 +134,6 @@ jobs:
 
     - name: snmalloc correntness test
       run: cd ./examples/mem-correctness-test && cargo run
+
+    - name: Run elf2uki example
+      run: ./examples/elf2uki/convert_hello_world.sh

Cargo.toml

@@ -41,6 +41,7 @@ members = [
 ]
 exclude = [
     "examples/backtrace_panic",
+    "examples/elf2uki",
     "examples/mpsc-crypto-mining",
     "examples/tls",
     "examples/unit_tests",

examples/elf2uki/convert_hello_world.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -euo pipefail
+set -x
+
+source_dir=$(dirname "${BASH_SOURCE[0]}")
+app_dir="$source_dir/hello_world"
+
+pushd "$app_dir"
+#builds statically linked bin for `musl`
+cargo -q build --release
+popd
+
+# build UKI and write it to `/dev/null`
+cargo -q run -p elf2uki -- \
+    --app "$app_dir/target/x86_64-unknown-linux-musl/release/hello_world" \
+    --cmdline "console=ttyS0 earlyprintk=serial" \
+    --output /dev/null

examples/elf2uki/hello_world/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "hello_world"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

examples/elf2uki/hello_world/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}