Merge pull request #644 from aya-rs/build-script

Steps toward hermetic integration tests

.github/workflows/gen.yml

@@ -9,11 +9,6 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - uses: actions/checkout@v3
-        with:
-          repository: libbpf/libbpf
-          path: libbpf
-
       - name: libbpf-version
         working-directory: libbpf
         run: echo "LIBBPF_SHA=$(git rev-parse HEAD)" >> $GITHUB_ENV
@@ -32,7 +27,7 @@ jobs:
 
       - name: Run codegen
         run: |
-          cargo xtask codegen --libbpf-dir ./libbpf
+          cargo xtask codegen
 
       - name: Check for changes
         run: |

.github/workflows/integration-tests.yml

@@ -17,11 +17,9 @@ jobs:
     runs-on: macos-latest
 
     steps:
-      - uses: actions/checkout@v3
       - uses: actions/checkout@v3
         with:
-          repository: libbpf/libbpf
-          path: libbpf
+          submodules: recursive
 
       - name: Install Pre-requisites
         run: |
@@ -40,4 +38,4 @@ jobs:
           key: tmp-files-${{ hashFiles('test/run.sh') }}
 
       - name: Run integration tests
-        run: test/run.sh ./libbpf
+        run: test/run.sh

.github/workflows/lint.yml

@@ -29,7 +29,7 @@ jobs:
         run: cargo fmt --all -- --check
 
       - name: Run clippy
-        run: cargo clippy --all-targets --workspace --exclude integration-test -- --deny warnings
+        run: cargo clippy --all-targets --workspace -- --deny warnings
 
       - name: Run miri
         run: cargo miri test --all-targets

.gitignore

@@ -1,6 +1,5 @@
 Cargo.lock
 target/
-libbpf/
 .vscode/
 !.vscode/settings.json
 site/

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "libbpf"]
+	path = libbpf
+	url = https://github.com/libbpf/libbpf

.vscode/settings.json

@@ -1,4 +1,4 @@
 {
-  "rust-analyzer.checkOnSave.allTargets": false,
-  "rust-analyzer.checkOnSave.command": "clippy"
+    "rust-analyzer.check.allTargets": true,
+    "rust-analyzer.check.command": "clippy"
 }

aya/src/util.rs

@@ -299,7 +299,7 @@ macro_rules! include_bytes_aligned {
             pub bytes: Bytes,
         }
 
-        static ALIGNED: &Aligned<[u8]> = &Aligned {
+        const ALIGNED: &Aligned<[u8]> = &Aligned {
             _align: [],
             bytes: *include_bytes!($path),
         };

bpf/.cargo/config.toml

@@ -1,6 +0,0 @@
-[build]
-target-dir = "../target"
-target = "bpfel-unknown-none"
-
-[unstable]
-build-std = ["core"]

libbpf

@@ -0,0 +1 @@
+Subproject commit a2258003f21d9d52afd48aa64787b65ef80bd355

test/README.md

@@ -30,13 +30,13 @@ From the root of this repository:
 ### Native
 
 ```
-cargo xtask integration-test --libbpf-dir /path/to/libbpf
+cargo xtask integration-test
 ```
 
 ### Virtualized
 
 ```
-./test/run.sh /path/to/libbpf
+./test/run.sh
 ```
 
 ### Writing an integration test
@@ -44,10 +44,11 @@ cargo xtask integration-test --libbpf-dir /path/to/libbpf
 Tests should follow these guidelines:
 
 - Rust eBPF code should live in `integration-ebpf/${NAME}.rs` and included in
-  `integration-ebpf/Cargo.toml`.
-- C eBPF code should live in `integration-ebpf/src/bpf/${NAME}.bpf.c`. It's automatically compiled
-  and made available as `${OUT_DIR}/${NAME}.bpf.o`.
-- Any bytecode should be included in the integration test binary using `include_bytes_aligned!`.
+  `integration-ebpf/Cargo.toml` and `integration-test/src/lib.rs` using
+  `include_bytes_aligned!`.
+- C eBPF code should live in `integration-test/bpf/${NAME}.bpf.c`. It should be
+  added to the list of files in `integration-test/build.rs` and the list of
+  constants in `integration-test/src/lib.rs` using `include_bytes_aligned!`.
 - Tests should be added to `integration-test/tests`.
 - You may add a new module, or use an existing one.
 - Test functions should not return `anyhow::Result<()>` since this produces errors without stack

test/integration-ebpf/.cargo/config.toml

@@ -1,6 +0,0 @@
-[build]
-target-dir = "../../target"
-target = "bpfel-unknown-none"
-
-[unstable]
-build-std = ["core"]

test/integration-ebpf/rust-toolchain.toml

@@ -1,2 +0,0 @@
-[toolchain]
-channel="nightly"

test/integration-ebpf/rustfmt.toml

@@ -1 +0,0 @@
-../../rustfmt.toml

test/integration-test/Cargo.toml

@@ -18,5 +18,7 @@ object = { version = "0.31", default-features = false, features = [
     "elf",
 ] }
 rbpf = "0.2.0"
-tempfile = "3.3.0"
 tokio = { version = "1.24", default-features = false, features = ["time"] }
+
+[build-dependencies]
+cargo_metadata = "0.15.4"

test/integration-test/build.rs

@@ -0,0 +1,196 @@
+use std::{
+    env,
+    ffi::OsString,
+    fmt::Write as _,
+    fs,
+    io::BufReader,
+    path::PathBuf,
+    process::{Child, Command, Stdio},
+};
+
+use cargo_metadata::{
+    Artifact, CompilerMessage, Message, Metadata, MetadataCommand, Package, Target,
+};
+
+fn main() {
+    const AYA_BUILD_INTEGRATION_BPF: &str = "AYA_BUILD_INTEGRATION_BPF";
+
+    println!("cargo:rerun-if-env-changed={}", AYA_BUILD_INTEGRATION_BPF);
+
+    let build_integration_bpf = match env::var_os(AYA_BUILD_INTEGRATION_BPF) {
+        None => false,
+        Some(s) => {
+            let s = s.to_str().unwrap();
+            s.parse::<bool>().unwrap()
+        }
+    };
+
+    let manifest_dir = env::var_os("CARGO_MANIFEST_DIR").unwrap();
+    let manifest_dir = PathBuf::from(manifest_dir);
+    let out_dir = env::var_os("OUT_DIR").unwrap();
+    let out_dir = PathBuf::from(out_dir);
+
+    let endian = env::var_os("CARGO_CFG_TARGET_ENDIAN").unwrap();
+    let target = if endian == "big" {
+        "bpfeb"
+    } else if endian == "little" {
+        "bpfel"
+    } else {
+        panic!("unsupported endian={:?}", endian)
+    };
+
+    const C_BPF_PROBES: &[(&str, &str)] = &[
+        ("ext.bpf.c", "ext.bpf.o"),
+        ("main.bpf.c", "main.bpf.o"),
+        ("multimap-btf.bpf.c", "multimap-btf.bpf.o"),
+        ("text_64_64_reloc.c", "text_64_64_reloc.o"),
+    ];
+
+    let c_bpf_probes = C_BPF_PROBES
+        .iter()
+        .map(|(src, dst)| (src, out_dir.join(dst)));
+
+    if build_integration_bpf {
+        let libbpf_dir = manifest_dir
+            .parent()
+            .unwrap()
+            .parent()
+            .unwrap()
+            .join("libbpf");
+
+        let libbpf_headers_dir = out_dir.join("libbpf_headers");
+
+        let mut includedir = OsString::new();
+        includedir.push("INCLUDEDIR=");
+        includedir.push(&libbpf_headers_dir);
+
+        let mut cmd = Command::new("make");
+        cmd.arg("-C")
+            .arg(libbpf_dir.join("src"))
+            .arg(includedir)
+            .arg("install_headers");
+        let status = cmd
+            .status()
+            .unwrap_or_else(|err| panic!("failed to run {cmd:?}: {err}"));
+        match status.code() {
+            Some(code) => match code {
+                0 => {}
+                code => panic!("{cmd:?} exited with code {code}"),
+            },
+            None => panic!("{cmd:?} terminated by signal"),
+        }
+
+        let bpf_dir = manifest_dir.join("bpf");
+
+        let mut target_arch = OsString::new();
+        target_arch.push("-D__TARGET_ARCH_");
+
+        let arch = env::var_os("CARGO_CFG_TARGET_ARCH").unwrap();
+        if arch == "x86_64" {
+            target_arch.push("x86");
+        } else if arch == "aarch64" {
+            target_arch.push("arm64");
+        } else {
+            target_arch.push(arch);
+        };
+
+        for (src, dst) in c_bpf_probes {
+            let src = bpf_dir.join(src);
+            let mut cmd = Command::new("clang");
+            cmd.arg("-I")
+                .arg(&libbpf_headers_dir)
+                .args(["-g", "-O2", "-target", target, "-c"])
+                .arg(&target_arch)
+                .arg(src)
+                .arg("-o")
+                .arg(dst);
+            let status = cmd
+                .status()
+                .unwrap_or_else(|err| panic!("failed to run {cmd:?}: {err}"));
+            match status.code() {
+                Some(code) => match code {
+                    0 => {}
+                    code => panic!("{cmd:?} exited with code {code}"),
+                },
+                None => panic!("{cmd:?} terminated by signal"),
+            }
+        }
+
+        let ebpf_dir = manifest_dir.parent().unwrap().join("integration-ebpf");
+        let target = format!("{target}-unknown-none");
+
+        let mut cmd = Command::new("cargo");
+        cmd.current_dir(&ebpf_dir).args([
+            "build",
+            "-Z",
+            "build-std=core",
+            "--release",
+            "--message-format=json",
+            "--target",
+            &target,
+        ]);
+        let mut child = cmd
+            .stdout(Stdio::piped())
+            .spawn()
+            .unwrap_or_else(|err| panic!("failed to spawn {cmd:?}: {err}"));
+        let Child { stdout, .. } = &mut child;
+        let stdout = stdout.take().unwrap();
+        let reader = BufReader::new(stdout);
+        let mut executables = Vec::new();
+        let mut compiler_messages = String::new();
+        for message in Message::parse_stream(reader) {
+            #[allow(clippy::collapsible_match)]
+            match message.expect("valid JSON") {
+                Message::CompilerArtifact(Artifact {
+                    executable,
+                    target: Target { name, .. },
+                    ..
+                }) => {
+                    if let Some(executable) = executable {
+                        executables.push((name, executable.into_std_path_buf()));
+                    }
+                }
+                Message::CompilerMessage(CompilerMessage { message, .. }) => {
+                    writeln!(&mut compiler_messages, "{message}").unwrap()
+                }
+                _ => {}
+            }
+        }
+
+        let status = child
+            .wait()
+            .unwrap_or_else(|err| panic!("failed to wait for {cmd:?}: {err}"));
+
+        match status.code() {
+            Some(code) => match code {
+                0 => {}
+                code => panic!("{cmd:?} exited with status code {code}:\n{compiler_messages}"),
+            },
+            None => panic!("{cmd:?} terminated by signal"),
+        }
+
+        for (name, binary) in executables {
+            let dst = out_dir.join(name);
+            let _: u64 = fs::copy(&binary, &dst)
+                .unwrap_or_else(|err| panic!("failed to copy {binary:?} to {dst:?}: {err}"));
+        }
+    } else {
+        for (_src, dst) in c_bpf_probes {
+            fs::write(&dst, []).unwrap_or_else(|err| panic!("failed to create {dst:?}: {err}"));
+        }
+
+        let Metadata { packages, .. } = MetadataCommand::new().no_deps().exec().unwrap();
+        for Package { name, targets, .. } in packages {
+            if name != "integration-ebpf" {
+                continue;
+            }
+            for Target { name, kind, .. } in targets {
+                if kind != ["bin"] {
+                    continue;
+                }
+                let dst = out_dir.join(name);
+                fs::write(&dst, []).unwrap_or_else(|err| panic!("failed to create {dst:?}: {err}"));
+            }
+        }
+    }
+}

test/integration-test/src/lib.rs

@@ -1 +1,20 @@
+use aya::include_bytes_aligned;
 
+pub const EXT: &[u8] = include_bytes_aligned!(concat!(env!("OUT_DIR"), "/ext.bpf.o"));
+pub const MAIN: &[u8] = include_bytes_aligned!(concat!(env!("OUT_DIR"), "/main.bpf.o"));
+pub const MULTIMAP_BTF: &[u8] =
+    include_bytes_aligned!(concat!(env!("OUT_DIR"), "/multimap-btf.bpf.o"));
+pub const TEXT_64_64_RELOC: &[u8] =
+    include_bytes_aligned!(concat!(env!("OUT_DIR"), "/text_64_64_reloc.o"));
+
+pub const LOG: &[u8] = include_bytes_aligned!(concat!(env!("OUT_DIR"), "/log"));
+pub const MAP_TEST: &[u8] = include_bytes_aligned!(concat!(env!("OUT_DIR"), "/map_test"));
+pub const NAME_TEST: &[u8] = include_bytes_aligned!(concat!(env!("OUT_DIR"), "/name_test"));
+pub const PASS: &[u8] = include_bytes_aligned!(concat!(env!("OUT_DIR"), "/pass"));
+pub const TEST: &[u8] = include_bytes_aligned!(concat!(env!("OUT_DIR"), "/test"));
+pub const RELOCATIONS: &[u8] = include_bytes_aligned!(concat!(env!("OUT_DIR"), "/relocations"));
+pub const BPF_PROBE_READ: &[u8] =
+    include_bytes_aligned!(concat!(env!("OUT_DIR"), "/bpf_probe_read"));
+
+#[cfg(test)]
+mod tests;

test/integration-test/src/tests.rs

@@ -0,0 +1,8 @@
+mod bpf_probe_read;
+mod btf_relocations;
+mod elf;
+mod load;
+mod log;
+mod rbpf;
+mod relocations;
+mod smoke;

test/integration-test/src/tests/bpf_probe_read.rs

@@ -1,4 +1,4 @@
-use aya::{include_bytes_aligned, maps::Array, programs::UProbe, Bpf};
+use aya::{maps::Array, programs::UProbe, Bpf};
 
 const RESULT_BUF_LEN: usize = 1024;
 
@@ -68,7 +68,7 @@ fn set_user_buffer(bytes: &[u8], dest_len: usize) -> Bpf {
     let bpf = load_and_attach_uprobe(
         "test_bpf_probe_read_user_str_bytes",
         "trigger_bpf_probe_read_user",
-        include_bytes_aligned!("../../../target/bpfel-unknown-none/release/bpf_probe_read"),
+        crate::BPF_PROBE_READ,
     );
     trigger_bpf_probe_read_user(bytes.as_ptr(), dest_len);
     bpf
@@ -78,7 +78,7 @@ fn set_kernel_buffer(bytes: &[u8], dest_len: usize) -> Bpf {
     let mut bpf = load_and_attach_uprobe(
         "test_bpf_probe_read_kernel_str_bytes",
         "trigger_bpf_probe_read_kernel",
-        include_bytes_aligned!("../../../target/bpfel-unknown-none/release/bpf_probe_read"),
+        crate::BPF_PROBE_READ,
     );
     set_kernel_buffer_element(&mut bpf, bytes);
     trigger_bpf_probe_read_kernel(dest_len);

test/integration-test/src/tests/btf_relocations.rs

@@ -1,6 +1,9 @@
-use anyhow::{bail, Context as _, Result};
-use std::{path::PathBuf, process::Command, thread::sleep, time::Duration};
-use tempfile::TempDir;
+use anyhow::{anyhow, bail, Context as _, Result};
+use std::{
+    process::{Child, ChildStdout, Command, Stdio},
+    thread::sleep,
+    time::Duration,
+};
 
 use aya::{maps::Array, programs::TracePoint, util::KernelVersion, BpfLoader, Btf, Endianness};
 
@@ -215,9 +218,15 @@ impl RelocationTest {
     /// - Generate the source eBPF filling a template
     /// - Compile it with clang
     fn build_ebpf(&self) -> Result<Vec<u8>> {
-        let local_definition = self.local_definition;
-        let relocation_code = self.relocation_code;
-        let (_tmp_dir, compiled_file) = compile(&format!(
+        use std::io::Read as _;
+
+        let Self {
+            local_definition,
+            relocation_code,
+            ..
+        } = self;
+
+        let mut stdout = compile(&format!(
             r#"
                 #include <linux/bpf.h>
 
@@ -250,23 +259,29 @@ impl RelocationTest {
                 char _license[] __attribute__((section("license"), used)) = "GPL";
             "#
         ))
-        .context("Failed to compile eBPF program")?;
-        let bytecode =
-            std::fs::read(compiled_file).context("Error reading compiled eBPF program")?;
-        Ok(bytecode)
+        .context("failed to compile eBPF program")?;
+        let mut output = Vec::new();
+        stdout.read_to_end(&mut output)?;
+        Ok(output)
     }
 
     /// - Generate the target BTF source with a mock main()
     /// - Compile it with clang
     /// - Extract the BTF with llvm-objcopy
     fn build_btf(&self) -> Result<Btf> {
-        let target_btf = self.target_btf;
-        let relocation_code = self.relocation_code;
+        use std::io::Read as _;
+
+        let Self {
+            target_btf,
+            relocation_code,
+            ..
+        } = self;
+
         // BTF files can be generated and inspected with these commands:
         // $ clang -c -g -O2 -target bpf target.c
         // $ pahole --btf_encode_detached=target.btf -V target.o
         // $ bpftool btf dump file ./target.btf  format c
-        let (tmp_dir, compiled_file) = compile(&format!(
+        let stdout = compile(&format!(
             r#"
                 #include <linux/bpf.h>
 
@@ -280,14 +295,20 @@ impl RelocationTest {
                 }}
             "#
         ))
-        .context("Failed to compile BTF")?;
+        .context("failed to compile BTF")?;
+
         let mut cmd = Command::new("llvm-objcopy");
-        cmd.current_dir(tmp_dir.path())
-            .args(["--dump-section", ".BTF=target.btf"])
-            .arg(compiled_file);
-        let status = cmd
-            .status()
-            .with_context(|| format!("Failed to run {cmd:?}"))?;
+        cmd.args(["--dump-section", ".BTF=-", "-"])
+            .stdin(stdout)
+            .stdout(Stdio::piped());
+        let mut child = cmd
+            .spawn()
+            .with_context(|| format!("failed to spawn {cmd:?}"))?;
+        let Child { stdout, .. } = &mut child;
+        let mut stdout = stdout.take().ok_or(anyhow!("failed to open stdout"))?;
+        let status = child
+            .wait()
+            .with_context(|| format!("failed to wait for {cmd:?}"))?;
         match status.code() {
             Some(code) => match code {
                 0 => {}
@@ -295,25 +316,39 @@ impl RelocationTest {
             },
             None => bail!("{cmd:?} terminated by signal"),
         }
-        let btf = Btf::parse_file(tmp_dir.path().join("target.btf"), Endianness::default())
-            .context("Error parsing generated BTF")?;
-        Ok(btf)
+
+        let mut output = Vec::new();
+        stdout.read_to_end(&mut output)?;
+
+        Btf::parse(output.as_slice(), Endianness::default())
+            .context("failed to parse generated BTF")
     }
 }
 
-/// Compile an eBPF program and return the path of the compiled object.
-/// Also returns a TempDir handler, dropping it will clear the created dicretory.
-fn compile(source_code: &str) -> Result<(TempDir, PathBuf)> {
-    let tmp_dir = tempfile::tempdir().context("Error making temp dir")?;
-    let source = tmp_dir.path().join("source.c");
-    std::fs::write(&source, source_code).context("Writing bpf program failed")?;
+/// Compile an eBPF program and return its bytes.
+fn compile(source_code: &str) -> Result<ChildStdout> {
+    use std::io::Write as _;
+
     let mut cmd = Command::new("clang");
-    cmd.current_dir(&tmp_dir)
-        .args(["-c", "-g", "-O2", "-target", "bpf"])
-        .arg(&source);
-    let status = cmd
-        .status()
-        .with_context(|| format!("Failed to run {cmd:?}"))?;
+    cmd.args([
+        "-c", "-g", "-O2", "-target", "bpf", "-x", "c", "-", "-o", "-",
+    ])
+    .stdin(Stdio::piped())
+    .stdout(Stdio::piped());
+    let mut child = cmd
+        .spawn()
+        .with_context(|| format!("failed to spawn {cmd:?}"))?;
+    let Child { stdin, stdout, .. } = &mut child;
+    {
+        let mut stdin = stdin.take().ok_or(anyhow!("failed to open stdin"))?;
+        stdin
+            .write_all(source_code.as_bytes())
+            .context("failed to write to stdin")?;
+    }
+    let stdout = stdout.take().ok_or(anyhow!("failed to open stdout"))?;
+    let status = child
+        .wait()
+        .with_context(|| format!("failed to wait for {cmd:?}"))?;
     match status.code() {
         Some(code) => match code {
             0 => {}
@@ -321,7 +356,7 @@ fn compile(source_code: &str) -> Result<(TempDir, PathBuf)> {
         },
         None => bail!("{cmd:?} terminated by signal"),
     }
-    Ok((tmp_dir, source.with_extension("o")))
+    Ok(stdout)
 }
 
 struct RelocationTestRunner {

test/integration-test/src/tests/elf.rs

@@ -1,10 +1,8 @@
-use aya::include_bytes_aligned;
 use object::{Object, ObjectSymbol};
 
 #[test]
 fn test_maps() {
-    let bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/map_test");
-    let obj_file = object::File::parse(bytes).unwrap();
+    let obj_file = object::File::parse(crate::MAP_TEST).unwrap();
     if obj_file.section_by_name("maps").is_none() {
         panic!("No 'maps' ELF section");
     }

test/integration-test/src/tests/load.rs

@@ -1,7 +1,6 @@
 use std::{convert::TryInto as _, thread, time};
 
 use aya::{
-    include_bytes_aligned,
     maps::Array,
     programs::{
         links::{FdLink, PinnedLink},
@@ -16,8 +15,7 @@ const RETRY_DURATION_MS: u64 = 10;
 
 #[test]
 fn long_name() {
-    let bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/name_test");
-    let mut bpf = Bpf::load(bytes).unwrap();
+    let mut bpf = Bpf::load(crate::NAME_TEST).unwrap();
     let name_prog: &mut Xdp = bpf
         .program_mut("ihaveaverylongname")
         .unwrap()
@@ -33,9 +31,7 @@ fn long_name() {
 
 #[test]
 fn multiple_btf_maps() {
-    let bytes =
-        include_bytes_aligned!("../../../target/bpfel-unknown-none/release/multimap-btf.bpf.o");
-    let mut bpf = Bpf::load(bytes).unwrap();
+    let mut bpf = Bpf::load(crate::MULTIMAP_BTF).unwrap();
 
     let map_1: Array<_, u64> = bpf.take_map("map_1").unwrap().try_into().unwrap();
     let map_2: Array<_, u64> = bpf.take_map("map_2").unwrap().try_into().unwrap();
@@ -71,8 +67,7 @@ macro_rules! assert_loaded {
 
 #[test]
 fn unload_xdp() {
-    let bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/test");
-    let mut bpf = Bpf::load(bytes).unwrap();
+    let mut bpf = Bpf::load(crate::TEST).unwrap();
     let prog: &mut Xdp = bpf
         .program_mut("test_unload_xdp")
         .unwrap()
@@ -101,8 +96,7 @@ fn unload_xdp() {
 
 #[test]
 fn unload_kprobe() {
-    let bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/test");
-    let mut bpf = Bpf::load(bytes).unwrap();
+    let mut bpf = Bpf::load(crate::TEST).unwrap();
     let prog: &mut KProbe = bpf
         .program_mut("test_unload_kpr")
         .unwrap()
@@ -137,8 +131,7 @@ fn pin_link() {
         return;
     }
 
-    let bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/test");
-    let mut bpf = Bpf::load(bytes).unwrap();
+    let mut bpf = Bpf::load(crate::TEST).unwrap();
     let prog: &mut Xdp = bpf
         .program_mut("test_unload_xdp")
         .unwrap()
@@ -173,11 +166,9 @@ fn pin_lifecycle() {
         return;
     }
 
-    let bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/pass");
-
     // 1. Load Program and Pin
     {
-        let mut bpf = Bpf::load(bytes).unwrap();
+        let mut bpf = Bpf::load(crate::PASS).unwrap();
         let prog: &mut Xdp = bpf.program_mut("pass").unwrap().try_into().unwrap();
         prog.load().unwrap();
         prog.pin("/sys/fs/bpf/aya-xdp-test-prog").unwrap();
@@ -211,7 +202,7 @@ fn pin_lifecycle() {
 
     // 4. Load a new version of the program, unpin link, and atomically replace old program
     {
-        let mut bpf = Bpf::load(bytes).unwrap();
+        let mut bpf = Bpf::load(crate::PASS).unwrap();
         let prog: &mut Xdp = bpf.program_mut("pass").unwrap().try_into().unwrap();
         prog.load().unwrap();
 

test/integration-test/src/tests/log.rs

@@ -1,6 +1,6 @@
 use std::sync::{Arc, LockResult, Mutex, MutexGuard};
 
-use aya::{include_bytes_aligned, programs::UProbe, Bpf};
+use aya::{programs::UProbe, Bpf};
 use aya_log::BpfLogger;
 use log::{Level, Log, Record};
 use tokio::time::{sleep, Duration};
@@ -89,8 +89,7 @@ impl Log for TestingLogger {
 
 #[tokio::test]
 async fn log() {
-    let bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/log");
-    let mut bpf = Bpf::load(bytes).unwrap();
+    let mut bpf = Bpf::load(crate::LOG).unwrap();
 
     let (logger, captured_logs) = TestingLogger::with_capacity(5);
     BpfLogger::init_with_logger(&mut bpf, logger).unwrap();

test/integration-test/src/tests/rbpf.rs

@@ -1,13 +1,11 @@
 use core::{mem::size_of, ptr::null_mut, slice::from_raw_parts};
 use std::collections::HashMap;
 
-use aya::include_bytes_aligned;
 use aya_obj::{generated::bpf_insn, Object, ProgramSection};
 
 #[test]
 fn run_with_rbpf() {
-    let bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/pass");
-    let object = Object::parse(bytes).unwrap();
+    let object = Object::parse(crate::PASS).unwrap();
 
     assert_eq!(object.programs.len(), 1);
     matches::assert_matches!(object.programs["pass"].section, ProgramSection::Xdp { .. });
@@ -34,9 +32,7 @@ static mut MULTIMAP_MAPS: [*mut Vec<u64>; 2] = [null_mut(), null_mut()];
 
 #[test]
 fn use_map_with_rbpf() {
-    let bytes =
-        include_bytes_aligned!("../../../target/bpfel-unknown-none/release/multimap-btf.bpf.o");
-    let mut object = Object::parse(bytes).unwrap();
+    let mut object = Object::parse(crate::MULTIMAP_BTF).unwrap();
 
     assert_eq!(object.programs.len(), 1);
     matches::assert_matches!(

test/integration-test/src/tests/relocations.rs

@@ -1,13 +1,10 @@
 use std::time::Duration;
 
-use aya::{include_bytes_aligned, programs::UProbe, Bpf};
+use aya::{programs::UProbe, Bpf};
 
 #[test]
 fn relocations() {
-    let bpf = load_and_attach(
-        "test_64_32_call_relocs",
-        include_bytes_aligned!("../../../target/bpfel-unknown-none/release/relocations"),
-    );
+    let bpf = load_and_attach("test_64_32_call_relocs", crate::RELOCATIONS);
 
     trigger_relocations_program();
     std::thread::sleep(Duration::from_millis(100));
@@ -20,10 +17,7 @@ fn relocations() {
 
 #[test]
 fn text_64_64_reloc() {
-    let mut bpf = load_and_attach(
-        "test_text_64_64_reloc",
-        include_bytes_aligned!("../../../target/bpfel-unknown-none/release/text_64_64_reloc.o"),
-    );
+    let mut bpf = load_and_attach("test_text_64_64_reloc", crate::TEXT_64_64_RELOC);
 
     let mut m = aya::maps::Array::<_, u64>::try_from(bpf.map_mut("RESULTS").unwrap()).unwrap();
     m.set(0, 1, 0).unwrap();

test/integration-test/src/tests/smoke.rs

@@ -1,5 +1,4 @@
 use aya::{
-    include_bytes_aligned,
     programs::{Extension, Xdp, XdpFlags},
     util::KernelVersion,
     Bpf, BpfLoader,
@@ -13,8 +12,7 @@ fn xdp() {
         return;
     }
 
-    let bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/pass");
-    let mut bpf = Bpf::load(bytes).unwrap();
+    let mut bpf = Bpf::load(crate::PASS).unwrap();
     let dispatcher: &mut Xdp = bpf.program_mut("pass").unwrap().try_into().unwrap();
     dispatcher.load().unwrap();
     dispatcher.attach("lo", XdpFlags::default()).unwrap();
@@ -27,15 +25,12 @@ fn extension() {
         eprintln!("skipping test on kernel {kernel_version:?}, XDP uses netlink");
         return;
     }
-    let main_bytes =
-        include_bytes_aligned!("../../../target/bpfel-unknown-none/release/main.bpf.o");
-    let mut bpf = Bpf::load(main_bytes).unwrap();
+    let mut bpf = Bpf::load(crate::MAIN).unwrap();
     let pass: &mut Xdp = bpf.program_mut("pass").unwrap().try_into().unwrap();
     pass.load().unwrap();
     pass.attach("lo", XdpFlags::default()).unwrap();
 
-    let ext_bytes = include_bytes_aligned!("../../../target/bpfel-unknown-none/release/ext.bpf.o");
-    let mut bpf = BpfLoader::new().extension("drop").load(ext_bytes).unwrap();
+    let mut bpf = BpfLoader::new().extension("drop").load(crate::EXT).unwrap();
     let drop_: &mut Extension = bpf.program_mut("drop").unwrap().try_into().unwrap();
     drop_.load(pass.fd().unwrap(), "xdp_pass").unwrap();
 }

test/run.sh

@@ -7,7 +7,6 @@ if [ "$(uname -s)" = "Darwin" ]; then
 fi
 
 AYA_SOURCE_DIR="$(realpath $(dirname $0)/..)"
-LIBBPF_DIR=$1
 
 # Temporary directory for tests to use.
 AYA_TMPDIR="${AYA_SOURCE_DIR}/.tmp"
@@ -236,25 +235,16 @@ cleanup_vm() {
     fi
 }
 
-if [ -z "$LIBBPF_DIR" ]; then
-    echo "path to libbpf required"
-    exit 1
-fi
-
 start_vm
 trap cleanup_vm EXIT
 
-# make sure we always use fresh aya and libbpf (also see comment at the end)
-exec_vm "rm -rf aya/* libbpf"
+# make sure we always use fresh sources (also see comment at the end)
+exec_vm "rm -rf aya/*"
 rsync_vm "--exclude=target --exclude=.tmp $AYA_SOURCE_DIR"
-rsync_vm "$LIBBPF_DIR"
 
-# need to build or linting will fail trying to include object files; don't run the tests though.
-exec_vm "cd aya; cargo xtask integration-test --libbpf-dir ~/libbpf -- filter-that-matches-nothing"
-exec_vm "cd aya; cargo clippy --all-targets -p integration-test -- --deny warnings"
-exec_vm "cd aya; cargo xtask integration-test --libbpf-dir ~/libbpf"
+exec_vm "cd aya; cargo xtask integration-test"
 
 # we rm and sync but it doesn't seem to work reliably - I guess we could sleep a
 # few seconds after but ain't nobody got time for that. Instead we also rm
 # before rsyncing.
-exec_vm "rm -rf aya/* libbpf; sync"
+exec_vm "rm -rf aya/*; sync"

xtask/src/build_ebpf.rs

@@ -1,138 +0,0 @@
-use std::{
-    borrow::Cow,
-    env,
-    ffi::{OsStr, OsString},
-    fs,
-    path::{Path, PathBuf},
-    process::Command,
-};
-
-use anyhow::Result;
-use clap::Parser;
-
-use crate::utils::{exec, workspace_root};
-
-#[derive(Debug, Copy, Clone)]
-pub enum Architecture {
-    BpfEl,
-    BpfEb,
-}
-
-impl std::str::FromStr for Architecture {
-    type Err = &'static str;
-
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
-        Ok(match s {
-            "bpfel-unknown-none" => Architecture::BpfEl,
-            "bpfeb-unknown-none" => Architecture::BpfEb,
-            _ => return Err("invalid target"),
-        })
-    }
-}
-
-impl std::fmt::Display for Architecture {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.write_str(match self {
-            Architecture::BpfEl => "bpfel-unknown-none",
-            Architecture::BpfEb => "bpfeb-unknown-none",
-        })
-    }
-}
-
-#[derive(Debug, Parser)]
-pub struct BuildEbpfOptions {
-    /// Set the endianness of the BPF target
-    #[clap(default_value = "bpfel-unknown-none", long)]
-    pub target: Architecture,
-    /// Libbpf dir, required for compiling C code
-    #[clap(long, action)]
-    pub libbpf_dir: PathBuf,
-}
-
-pub fn build_ebpf(opts: BuildEbpfOptions) -> Result<()> {
-    build_rust_ebpf(&opts)?;
-    build_c_ebpf(&opts)
-}
-
-fn build_rust_ebpf(opts: &BuildEbpfOptions) -> Result<()> {
-    let BuildEbpfOptions {
-        target,
-        libbpf_dir: _,
-    } = opts;
-
-    let mut dir = PathBuf::from(workspace_root());
-    dir.push("test/integration-ebpf");
-
-    exec(
-        Command::new("cargo")
-            .current_dir(&dir)
-            .args(["+nightly", "build", "--release", "--target"])
-            .arg(target.to_string())
-            .args(["-Z", "build-std=core"])
-            .current_dir(&dir),
-    )
-}
-
-fn get_libbpf_headers(libbpf_dir: &Path, include_path: &Path) -> Result<()> {
-    fs::create_dir_all(include_path)?;
-    let mut includedir = OsString::new();
-    includedir.push("INCLUDEDIR=");
-    includedir.push(include_path);
-    exec(
-        Command::new("make")
-            .current_dir(libbpf_dir.join("src"))
-            .arg(includedir)
-            .arg("install_headers"),
-    )
-}
-
-fn build_c_ebpf(opts: &BuildEbpfOptions) -> Result<()> {
-    let BuildEbpfOptions { target, libbpf_dir } = opts;
-
-    let mut src = PathBuf::from(workspace_root());
-    src.push("test/integration-ebpf/src/bpf");
-
-    let mut out_path = PathBuf::from(workspace_root());
-    out_path.push("target");
-    out_path.push(target.to_string());
-    out_path.push("release");
-
-    let include_path = out_path.join("include");
-    get_libbpf_headers(libbpf_dir, &include_path)?;
-    let files = fs::read_dir(&src).unwrap();
-    for file in files {
-        let p = file.unwrap().path();
-        if let Some(ext) = p.extension() {
-            if ext == "c" {
-                let mut out = PathBuf::from(&out_path);
-                out.push(p.file_name().unwrap());
-                out.set_extension("o");
-                compile_with_clang(&p, &out, &include_path)?;
-            }
-        }
-    }
-    Ok(())
-}
-
-/// Build eBPF programs with clang and libbpf headers.
-fn compile_with_clang(src: &Path, out: &Path, include_path: &Path) -> Result<()> {
-    let clang: Cow<'_, _> = match env::var_os("CLANG") {
-        Some(val) => val.into(),
-        None => OsStr::new("/usr/bin/clang").into(),
-    };
-    let arch = match env::consts::ARCH {
-        "x86_64" => "x86",
-        "aarch64" => "arm64",
-        arch => arch,
-    };
-    exec(
-        Command::new(clang)
-            .arg("-I")
-            .arg(include_path)
-            .args(["-g", "-O2", "-target", "bpf", "-c"])
-            .arg(format!("-D__TARGET_ARCH_{arch}"))
-            .arg(src)
-            .arg("-o")
-            .arg(out),
-    )
-}

xtask/src/codegen/aya.rs

@@ -3,20 +3,22 @@ use std::path::PathBuf;
 
 use aya_tool::{bindgen, write_to_file};
 
-use crate::codegen::{Architecture, Options};
+use crate::codegen::{Architecture, SysrootOptions};
 
-pub fn codegen(opts: &Options) -> Result<(), anyhow::Error> {
-    codegen_internal_btf_bindings(opts)?;
+pub fn codegen(opts: &SysrootOptions) -> Result<(), anyhow::Error> {
+    codegen_internal_btf_bindings()?;
     codegen_bindings(opts)
 }
 
-fn codegen_internal_btf_bindings(opts: &Options) -> Result<(), anyhow::Error> {
+fn codegen_internal_btf_bindings() -> Result<(), anyhow::Error> {
     let dir = PathBuf::from("aya-obj");
     let generated = dir.join("src/generated");
+    let libbpf_dir = PathBuf::from("libbpf");
+
     let mut bindgen = bindgen::user_builder()
         .clang_arg(format!(
             "-I{}",
-            opts.libbpf_dir
+            libbpf_dir
                 .join("include/uapi")
                 .canonicalize()
                 .unwrap()
@@ -24,17 +26,13 @@ fn codegen_internal_btf_bindings(opts: &Options) -> Result<(), anyhow::Error> {
         ))
         .clang_arg(format!(
             "-I{}",
-            opts.libbpf_dir
+            libbpf_dir
                 .join("include")
                 .canonicalize()
                 .unwrap()
                 .to_string_lossy()
         ))
-        .header(
-            opts.libbpf_dir
-                .join("src/libbpf_internal.h")
-                .to_string_lossy(),
-        )
+        .header(libbpf_dir.join("src/libbpf_internal.h").to_string_lossy())
         .constified_enum_module("bpf_core_relo_kind");
 
     let types = ["bpf_core_relo", "btf_ext_header"];
@@ -54,7 +52,13 @@ fn codegen_internal_btf_bindings(opts: &Options) -> Result<(), anyhow::Error> {
     Ok(())
 }
 
-fn codegen_bindings(opts: &Options) -> Result<(), anyhow::Error> {
+fn codegen_bindings(opts: &SysrootOptions) -> Result<(), anyhow::Error> {
+    let SysrootOptions {
+        x86_64_sysroot,
+        aarch64_sysroot,
+        armv7_sysroot,
+        riscv64_sysroot,
+    } = opts;
     let types = [
         // BPF
         "BPF_TYPES",
@@ -158,15 +162,13 @@ fn codegen_bindings(opts: &Options) -> Result<(), anyhow::Error> {
 
     let dir = PathBuf::from("aya-obj");
     let generated = dir.join("src/generated");
+    let libbpf_dir = PathBuf::from("libbpf");
 
     let builder = || {
         bindgen::user_builder()
             .header(dir.join("include/linux_wrapper.h").to_string_lossy())
-            .clang_args(&[
-                "-I",
-                &*opts.libbpf_dir.join("include/uapi").to_string_lossy(),
-            ])
-            .clang_args(&["-I", &*opts.libbpf_dir.join("include").to_string_lossy()])
+            .clang_args(&["-I", &*libbpf_dir.join("include/uapi").to_string_lossy()])
+            .clang_args(&["-I", &*libbpf_dir.join("include").to_string_lossy()])
     };
 
     for arch in Architecture::supported() {
@@ -185,10 +187,10 @@ fn codegen_bindings(opts: &Options) -> Result<(), anyhow::Error> {
         // Set the sysroot. This is needed to ensure that the correct arch
         // specific headers are imported.
         let sysroot = match arch {
-            Architecture::X86_64 => &opts.x86_64_sysroot,
-            Architecture::ARMv7 => &opts.armv7_sysroot,
-            Architecture::AArch64 => &opts.aarch64_sysroot,
-            Architecture::RISCV64 => &opts.riscv64_sysroot,
+            Architecture::X86_64 => x86_64_sysroot,
+            Architecture::ARMv7 => armv7_sysroot,
+            Architecture::AArch64 => aarch64_sysroot,
+            Architecture::RISCV64 => riscv64_sysroot,
         };
         bindgen = bindgen.clang_args(&["-I", &*sysroot.to_string_lossy()]);
 

xtask/src/codegen/aya_bpf_bindings.rs

@@ -8,11 +8,19 @@ use syn::{parse_str, Item};
 
 use crate::codegen::{
     helpers::{expand_helpers, extract_helpers},
-    Architecture, Options,
+    Architecture, SysrootOptions,
 };
 
-pub fn codegen(opts: &Options) -> Result<(), anyhow::Error> {
+pub fn codegen(opts: &SysrootOptions) -> Result<(), anyhow::Error> {
+    let SysrootOptions {
+        x86_64_sysroot,
+        aarch64_sysroot,
+        armv7_sysroot,
+        riscv64_sysroot,
+    } = opts;
+
     let dir = PathBuf::from("bpf/aya-bpf-bindings");
+    let libbpf_dir = PathBuf::from("libbpf");
 
     let builder = || {
         let mut bindgen = bindgen::bpf_builder()
@@ -20,12 +28,9 @@ pub fn codegen(opts: &Options) -> Result<(), anyhow::Error> {
             // aya-tool uses aya_bpf::cty. We can't use that here since aya-bpf
             // depends on aya-bpf-bindings so it would create a circular dep.
             .ctypes_prefix("::aya_bpf_cty")
-            .clang_args(&[
-                "-I",
-                &*opts.libbpf_dir.join("include/uapi").to_string_lossy(),
-            ])
-            .clang_args(&["-I", &*opts.libbpf_dir.join("include").to_string_lossy()])
-            .clang_args(&["-I", &*opts.libbpf_dir.join("src").to_string_lossy()])
+            .clang_args(&["-I", &*libbpf_dir.join("include/uapi").to_string_lossy()])
+            .clang_args(&["-I", &*libbpf_dir.join("include").to_string_lossy()])
+            .clang_args(&["-I", &*libbpf_dir.join("src").to_string_lossy()])
             // open aya-bpf-bindings/.../bindings.rs and look for mod
             // _bindgen, those are anonymous enums
             .constified_enum("BPF_F_.*")
@@ -82,10 +87,10 @@ pub fn codegen(opts: &Options) -> Result<(), anyhow::Error> {
         // Set the sysroot. This is needed to ensure that the correct arch
         // specific headers are imported.
         let sysroot = match arch {
-            Architecture::X86_64 => &opts.x86_64_sysroot,
-            Architecture::ARMv7 => &opts.armv7_sysroot,
-            Architecture::AArch64 => &opts.aarch64_sysroot,
-            Architecture::RISCV64 => &opts.riscv64_sysroot,
+            Architecture::X86_64 => x86_64_sysroot,
+            Architecture::ARMv7 => armv7_sysroot,
+            Architecture::AArch64 => aarch64_sysroot,
+            Architecture::RISCV64 => riscv64_sysroot,
         };
         bindgen = bindgen.clang_args(&["-I", &*sysroot.to_string_lossy()]);
 

xtask/src/codegen/mod.rs

@@ -52,13 +52,10 @@ impl std::fmt::Display for Architecture {
     }
 }
 
+// sysroot options. Default to ubuntu headers installed by the
+// libc6-dev-{arm64,armel}-cross packages.
 #[derive(Parser)]
-pub struct Options {
-    #[arg(long, action)]
-    libbpf_dir: PathBuf,
-
-    // sysroot options. Default to ubuntu headers installed by the
-    // libc6-dev-{arm64,armel}-cross packages.
+pub struct SysrootOptions {
     #[arg(long, default_value = "/usr/include/x86_64-linux-gnu", action)]
     x86_64_sysroot: PathBuf,
 
@@ -70,6 +67,12 @@ pub struct Options {
 
     #[arg(long, default_value = "/usr/riscv64-linux-gnu/include", action)]
     riscv64_sysroot: PathBuf,
+}
+
+#[derive(Parser)]
+pub struct Options {
+    #[command(flatten)]
+    sysroot_options: SysrootOptions,
 
     #[command(subcommand)]
     command: Option<Command>,
@@ -84,13 +87,18 @@ enum Command {
 }
 
 pub fn codegen(opts: Options) -> Result<(), anyhow::Error> {
-    use Command::*;
-    match opts.command {
-        Some(Aya) => aya::codegen(&opts),
-        Some(AyaBpfBindings) => aya_bpf_bindings::codegen(&opts),
+    let Options {
+        sysroot_options,
+        command,
+    } = opts;
+    match command {
+        Some(command) => match command {
+            Command::Aya => aya::codegen(&sysroot_options),
+            Command::AyaBpfBindings => aya_bpf_bindings::codegen(&sysroot_options),
+        },
         None => {
-            aya::codegen(&opts)?;
-            aya_bpf_bindings::codegen(&opts)
+            aya::codegen(&sysroot_options)?;
+            aya_bpf_bindings::codegen(&sysroot_options)
         }
     }
 }

xtask/src/docs/mod.rs

@@ -1,5 +1,4 @@
-use crate::utils::exec;
-use anyhow::{Context as _, Result};
+use anyhow::{anyhow, Context as _, Result};
 use std::{
     path::{Path, PathBuf},
     process::Command,
@@ -9,6 +8,19 @@ use std::{fs, io, io::Write};
 
 use indoc::indoc;
 
+pub fn exec(cmd: &mut Command) -> Result<()> {
+    let status = cmd
+        .status()
+        .with_context(|| format!("failed to run {cmd:?}"))?;
+    match status.code() {
+        Some(code) => match code {
+            0 => Ok(()),
+            code => Err(anyhow!("{cmd:?} exited with code {code}")),
+        },
+        None => Err(anyhow!("{cmd:?} terminated by signal")),
+    }
+}
+
 pub fn docs() -> Result<()> {
     let current_dir = PathBuf::from(".");
     let header_path = current_dir.join("header.html");

xtask/src/main.rs

@@ -1,12 +1,9 @@
-mod build_ebpf;
 mod codegen;
 mod docs;
 mod run;
-pub(crate) mod utils;
-
-use std::process::exit;
 
 use clap::Parser;
+
 #[derive(Parser)]
 pub struct XtaskOptions {
     #[clap(subcommand)]
@@ -17,20 +14,27 @@ pub struct XtaskOptions {
 enum Command {
     Codegen(codegen::Options),
     Docs,
+    BuildIntegrationTest(run::BuildOptions),
     IntegrationTest(run::Options),
 }
 
-fn main() {
+fn main() -> anyhow::Result<()> {
     let XtaskOptions { command } = Parser::parse();
 
-    let ret = match command {
+    match command {
         Command::Codegen(opts) => codegen::codegen(opts),
         Command::Docs => docs::docs(),
-        Command::IntegrationTest(opts) => run::run(opts),
-    };
+        Command::BuildIntegrationTest(opts) => {
+            let binaries = run::build(opts)?;
+            let mut stdout = std::io::stdout();
+            for (_name, binary) in binaries {
+                use std::{io::Write as _, os::unix::ffi::OsStrExt as _};
 
-    if let Err(e) = ret {
-        eprintln!("{e:#}");
-        exit(1);
+                stdout.write_all(binary.as_os_str().as_bytes())?;
+                stdout.write_all("\n".as_bytes())?;
+            }
+            Ok(())
+        }
+        Command::IntegrationTest(opts) => run::run(opts),
     }
 }

xtask/src/run.rs

@@ -9,31 +9,33 @@ use anyhow::{Context as _, Result};
 use cargo_metadata::{Artifact, CompilerMessage, Message, Target};
 use clap::Parser;
 
-use crate::build_ebpf::{build_ebpf, Architecture, BuildEbpfOptions as BuildOptions};
-
 #[derive(Debug, Parser)]
-pub struct Options {
-    /// Set the endianness of the BPF target
-    #[clap(default_value = "bpfel-unknown-none", long)]
-    pub bpf_target: Architecture,
-    /// Build and run the release target
+pub struct BuildOptions {
+    /// Pass --release to `cargo build`.
     #[clap(long)]
     pub release: bool,
-    /// The command used to wrap your application
+    /// Pass --target to `cargo build`.
+    #[clap(long)]
+    pub target: Option<String>,
+}
+
+#[derive(Debug, Parser)]
+pub struct Options {
+    #[command(flatten)]
+    pub build_options: BuildOptions,
+    /// The command used to wrap your application.
     #[clap(short, long, default_value = "sudo -E")]
     pub runner: String,
-    /// libbpf directory
-    #[clap(long, action)]
-    pub libbpf_dir: PathBuf,
-    /// Arguments to pass to your application
+    /// Arguments to pass to your application.
     #[clap(name = "args", last = true)]
     pub run_args: Vec<String>,
 }
 
 /// Build the project
-fn build(release: bool) -> Result<Vec<(PathBuf, PathBuf)>> {
+pub fn build(opts: BuildOptions) -> Result<Vec<(String, PathBuf)>> {
+    let BuildOptions { release, target } = opts;
     let mut cmd = Command::new("cargo");
-    cmd.args([
+    cmd.env("AYA_BUILD_INTEGRATION_BPF", "true").args([
         "build",
         "--tests",
         "--message-format=json",
@@ -42,6 +44,9 @@ fn build(release: bool) -> Result<Vec<(PathBuf, PathBuf)>> {
     if release {
         cmd.arg("--release");
     }
+    if let Some(target) = target {
+        cmd.args(["--target", &target]);
+    }
     let mut cmd = cmd
         .stdout(Stdio::piped())
         .spawn()
@@ -55,16 +60,17 @@ fn build(release: bool) -> Result<Vec<(PathBuf, PathBuf)>> {
         match message.context("valid JSON")? {
             Message::CompilerArtifact(Artifact {
                 executable,
-                target: Target { src_path, .. },
+                target: Target { name, .. },
                 ..
             }) => {
                 if let Some(executable) = executable {
-                    executables.push((src_path.into(), executable.into()));
+                    executables.push((name, executable.into()));
                 }
             }
             Message::CompilerMessage(CompilerMessage { message, .. }) => {
-                assert_eq!(writeln!(&mut compiler_messages, "{message}"), Ok(()));
+                writeln!(&mut compiler_messages, "{message}").context("String write failed")?
             }
+
             _ => {}
         }
     }
@@ -87,27 +93,18 @@ fn build(release: bool) -> Result<Vec<(PathBuf, PathBuf)>> {
 /// Build and run the project
 pub fn run(opts: Options) -> Result<()> {
     let Options {
-        bpf_target,
-        release,
+        build_options,
         runner,
-        libbpf_dir,
         run_args,
     } = opts;
 
-    // build our ebpf program followed by our application
-    build_ebpf(BuildOptions {
-        target: bpf_target,
-        libbpf_dir,
-    })
-    .context("error while building eBPF program")?;
-
-    let binaries = build(release).context("error while building userspace application")?;
+    let binaries = build(build_options).context("error while building userspace application")?;
     let mut args = runner.trim().split_terminator(' ');
     let runner = args.next().ok_or(anyhow::anyhow!("no first argument"))?;
     let args = args.collect::<Vec<_>>();
 
     let mut failures = String::new();
-    for (src_path, binary) in binaries {
+    for (name, binary) in binaries {
         let mut cmd = Command::new(runner);
         let cmd = cmd
             .args(args.iter())
@@ -115,7 +112,7 @@ pub fn run(opts: Options) -> Result<()> {
             .args(run_args.iter())
             .arg("--test-threads=1");
 
-        println!("{} running {cmd:?}", src_path.display());
+        println!("{} running {cmd:?}", name);
 
         let status = cmd
             .status()
@@ -123,19 +120,11 @@ pub fn run(opts: Options) -> Result<()> {
         match status.code() {
             Some(code) => match code {
                 0 => {}
-                code => assert_eq!(
-                    writeln!(
-                        &mut failures,
-                        "{} exited with status code {code}",
-                        src_path.display()
-                    ),
-                    Ok(())
-                ),
+                code => writeln!(&mut failures, "{} exited with status code {code}", name)
+                    .context("String write failed")?,
             },
-            None => assert_eq!(
-                writeln!(&mut failures, "{} terminated by signal", src_path.display()),
-                Ok(())
-            ),
+            None => writeln!(&mut failures, "{} terminated by signal", name)
+                .context("String write failed")?,
         }
     }
     if failures.is_empty() {

xtask/src/utils.rs

@@ -1,24 +0,0 @@
-use std::{cell::OnceCell, process::Command};
-
-use anyhow::{bail, Context as _, Result};
-
-pub fn workspace_root() -> &'static str {
-    static mut WORKSPACE_ROOT: OnceCell<String> = OnceCell::new();
-    unsafe { &mut WORKSPACE_ROOT }.get_or_init(|| {
-        let cmd = cargo_metadata::MetadataCommand::new();
-        cmd.exec().unwrap().workspace_root.to_string()
-    })
-}
-
-pub fn exec(cmd: &mut Command) -> Result<()> {
-    let status = cmd
-        .status()
-        .with_context(|| format!("failed to run {cmd:?}"))?;
-    match status.code() {
-        Some(code) => match code {
-            0 => Ok(()),
-            code => bail!("{cmd:?} exited with code {code}"),
-        },
-        None => bail!("{cmd:?} terminated by signal"),
-    }
-}