slim-rs v1: initrd build, qemu run, gitea actions

.gitea/workflows/ci.yml

@@ -0,0 +1,40 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: amd64
+    steps:
+      - name: Install node
+        run: |
+          if command -v apk >/dev/null 2>&1; then
+            apk add --no-cache nodejs npm
+          elif command -v apt-get >/dev/null 2>&1; then
+            apt-get update && apt-get install -y nodejs npm
+          else
+            echo "No package manager found, assuming node present"
+          fi
+      - uses: actions/checkout@v4
+      - name: Install Rust
+        run: |
+          if command -v rustc >/dev/null 2>&1 && command -v cargo >/dev/null 2>&1; then
+            echo "Rust already present"
+          elif command -v apk >/dev/null 2>&1; then
+            apk add --no-cache rust rustfmt rust-clippy
+          elif command -v apt-get >/dev/null 2>&1; then
+            apt-get update &&             apt-get install -y rustc cargo rustfmt rust-clippy
+          else
+            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable --component rustfmt,clippy
+          fi
+      - name: cargo check
+        run: cargo check
+      - name: cargo clippy
+        run: cargo clippy -- -D warnings
+      - name: cargo test
+        run: cargo test
+      - name: cargo fmt --check
+        run: cargo fmt -- --check

Cargo.toml

@@ -1,15 +1,15 @@
 [package]
 name = "slim"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
 
 [dependencies]
-anyhow = "1"
+anyhow = "1.0.104"
-clap = { version = "4", features = ["derive"] }
+clap = { version = "4.6.6", features = ["derive"] }
-flate2 = "1"
+flate2 = "1.1.9"
-walkdir = "2"
+walkdir = "2.5.0"
-cpio = "0.2"
+cpio = "0.4.1"
-xdg = "2"
+xdg = "3.0.0"
 
 [dev-dependencies]
-tempfile = "3"
+tempfile = "3.27.0"

src/main.rs

@@ -43,9 +43,9 @@ fn main() -> Result<()> {
 }
 
 fn registry_dir(image: &str) -> PathBuf {
-    let base = xdg::BaseDirectories::with_prefix("slim-rs").unwrap();
+    let base = xdg::BaseDirectories::with_prefix("slim-rs");
-    base.place_data_file(format!("registry/{}/vmlinuz", image)).unwrap();
+    let initrd_path = base.place_data_file(format!("registry/{}/initrd", image));
-    base.place_data_file(format!("registry/{}/initrd", image)).unwrap().parent().unwrap().to_path_buf()
+    initrd_path.unwrap().parent().unwrap().to_path_buf()
 }
 
 fn build(image: &str) -> Result<()> {
@@ -64,7 +64,9 @@ fn build(image: &str) -> Result<()> {
     // Step 2: find vmlinuz
     let vmlinuz_src = mount_path.join("vmlinuz");
     if !vmlinuz_src.exists() {
-        anyhow::bail!("Image missing required /vmlinuz. Place kernel at /vmlinuz in Containerfile.");
+        anyhow::bail!(
+            "Image missing required /vmlinuz. Place kernel at /vmlinuz in Containerfile."
+        );
     }
 
     // Step 3: prepare registry dir
@@ -106,8 +108,12 @@ fn build(image: &str) -> Result<()> {
 
     // Gzip initrd
     let initrd_file = fs::File::open(&initrd_raw)?;
-    let mut initrd_writer = flate2::write::GzEncoder::new(File::create(&initrd_path)?, flate2::Compression::default());
+    let mut initrd_writer =
-    std::io::copy(&mut std::io::BufReader::new(initrd_file), &mut initrd_writer)?;
+        flate2::write::GzEncoder::new(File::create(&initrd_path)?, flate2::Compression::default());
+    std::io::copy(
+        &mut std::io::BufReader::new(initrd_file),
+        &mut initrd_writer,
+    )?;
     initrd_writer.finish()?;
     fs::remove_file(&initrd_raw)?;
     println!("Created initrd -> {}", initrd_path.display());
@@ -139,18 +145,27 @@ fn run(name: &str) -> Result<()> {
     );
     // Launch with a 5-second timeout for quick smoke verification
     let status = Command::new("timeout")
-        .args(["5", "qemu-system-x86_64",
+        .args([
-               "-m", "256",
+            "5",
+            "qemu-system-x86_64",
+            "-m",
+            "256",
             "-nographic",
-               "-kernel", vmlinuz_path.to_str().unwrap(),
+            "-kernel",
-               "-initrd", initrd_path.to_str().unwrap(),
+            vmlinuz_path.to_str().unwrap(),
-               "-append", "console=ttyS0"])
+            "-initrd",
+            initrd_path.to_str().unwrap(),
+            "-append",
+            "console=ttyS0",
+        ])
         .status()
         .context("Failed to launch qemu-system-x86_64")?;
     if status.success() {
         println!("QEMU exited cleanly (timeout or normal exit).");
     } else {
-        println!("QEMU exited with non-zero status (timeout/expected for initrd boot without init).");
+        println!(
+            "QEMU exited with non-zero status (timeout/expected for initrd boot without init)."
+        );
     }
     Ok(())
 }