krata: compile for aarch64 (aarch64 guests are not yet supported)

.github/workflows/check.yml

@@ -7,14 +7,14 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable
-    - run: cargo build --target x86_64-unknown-linux-gnu
+    - run: ./scripts/cargo.sh build
   test:
     name: cargo test
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable
-    - run: cargo test --target x86_64-unknown-linux-gnu
+    - run: ./scripts/cargo.sh test
   clippy:
     name: cargo clippy
     runs-on: ubuntu-latest
@@ -23,7 +23,7 @@ jobs:
     - uses: dtolnay/rust-toolchain@stable
       with:
         components: clippy
-    - run: cargo clippy --target x86_64-unknown-linux-gnu
+    - run: ./scripts/cargo.sh clippy
   fmt:
     name: cargo fmt
     runs-on: ubuntu-latest
@@ -32,4 +32,4 @@ jobs:
     - uses: dtolnay/rust-toolchain@stable
       with:
         components: rustfmt
-    - run: cargo fmt
+    - run: ./scripts/cargo.sh fmt --all -- --check

initrd/build.sh

@@ -1,14 +1,15 @@
 #!/usr/bin/env bash
 set -e
 
-TARGET="x86_64-unknown-linux-gnu"
+export RUST_LIBC="musl"
+RUST_TARGET="$(./scripts/detect-rust-target.sh)"
 
 export RUSTFLAGS="-Ctarget-feature=+crt-static"
 cd "$(dirname "${0}")/.."
 KRATA_DIR="${PWD}"
-cargo build -q --bin krataguest --release --target "${TARGET}"
+./scripts/cargo.sh build -q --release --bin krataguest
 INITRD_DIR="$(mktemp -d /tmp/krata-initrd.XXXXXXXXXXXXX)"
-cp "target/${TARGET}/release/krataguest" "${INITRD_DIR}/init"
+cp "target/${RUST_TARGET}/release/krataguest" "${INITRD_DIR}/init"
 chmod +x "${INITRD_DIR}/init"
 cd "${INITRD_DIR}"
 mkdir -p "${KRATA_DIR}/initrd/target"

lefthook.toml

@@ -2,13 +2,13 @@
 parallel = true
 
 [pre-commit.commands.build]
-run = "cargo build --target x86_64-unknown-linux-gnu"
+run = "./scripts/cargo.sh build"
 
 [pre-commit.commands.test]
-run = "cargo test --target x86_64-unknown-linux-gnu"
+run = "./scripts/cargo.sh test"
 
 [pre-commit.commands.fmt]
-run = "cargo fmt --all -- --check"
+run = "./scripts/cargo.sh fmt --all -- --check"
 
 [pre-commit.commands.clippy]
-run = "cargo clippy --target x86_64-unknown-linux-gnu"
+run = "./scripts/cargo.sh clippy"

libs/advmac/src/lib.rs

@@ -234,6 +234,7 @@ macro_rules! mac_impl {
             }
         }
 
+        #[cfg(not(target_arch = "aarch64"))]
         impl TryFrom<&[core::ffi::c_char]> for $nm {
             type Error = ParseError;
 

scripts/bundle.sh

@@ -14,8 +14,9 @@ BUNDLE_DIR="${BUNDLE_DIR}/krata"
 mkdir -p "${BUNDLE_DIR}"
 for X in kratad kratanet kratactl
 do
-  cargo build --release --target x86_64-unknown-linux-gnu --bin "${X}"
-  cp "${KRATA_DIR}/target/x86_64-unknown-linux-gnu/release/${X}" "${BUNDLE_DIR}/${X}"
+  ./scripts/cargo.sh build --release --bin "${X}"
+  RUST_TARGET="$(./scripts/detect-rust-target.sh)"
+  cp "${KRATA_DIR}/target/${RUST_TARGET}/release/${X}" "${BUNDLE_DIR}/${X}"
 done
 ./initrd/build.sh
 if [ "${KRATA_BUNDLE_SKIP_KERNEL_BUILD}" != "1" ]

scripts/cargo.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+set -e
+
+SCRIPTS_DIR="$(dirname "${0}")"
+RUST_TARGET="$("${SCRIPTS_DIR}/detect-rust-target.sh")"
+
+export CARGO_BUILD_TARGET="${RUST_TARGET}"
+exec cargo "${@}"

scripts/detect-rust-target.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+set -e
+
+if [ -z "${RUST_LIBC}" ]
+then
+  RUST_LIBC="gnu"
+fi
+
+if [ -z "${RUST_TARGET}" ]
+then
+  HOST_ARCH="$(uname -m)"
+  if [ "${HOST_ARCH}" = "x86_64" ]
+  then
+    RUST_TARGET="x86_64-unknown-linux-${RUST_LIBC}"
+  fi
+
+  if [ "${HOST_ARCH}" = "aarch64" ]
+  then
+    RUST_TARGET="aarch64-unknown-linux-${RUST_LIBC}"
+  fi
+
+fi
+
+if [ -z "${RUST_TARGET}" ]
+then
+  echo "ERROR: Unable to determine RUST_TARGET, your architecture may not be supported by krata." > /dev/stderr
+  exit 1
+fi
+
+echo "${RUST_TARGET}"

scripts/fix.sh

@@ -2,5 +2,5 @@
 set -e
 
 cd "$(dirname "${0}")/.."
-cargo clippy --target x86_64-unknown-linux-gnu --fix --allow-dirty --allow-staged
+./scripts/cargo.sh clippy --fix --allow-dirty --allow-staged
 cargo fmt --all

scripts/krata-debug-common.sh

@@ -24,6 +24,7 @@ build_and_run() {
     ./initrd/build.sh -q
     sudo cp "target/initrd/initrd" "/var/lib/krata/default/initrd"
   fi
-  cargo build ${CARGO_BUILD_FLAGS} --target x86_64-unknown-linux-gnu --bin "${EXE_TARGET}"
-  exec sudo RUST_LOG="${RUST_LOG}" "target/x86_64-unknown-linux-gnu/debug/${EXE_TARGET}" "${@}"
+  RUST_TARGET="$(./scripts/detect-rust-target.sh)"
+  ./scripts/cargo.sh build ${CARGO_BUILD_FLAGS} --bin "${EXE_TARGET}"
+  exec sudo RUST_LOG="${RUST_LOG}" "target/${RUST_TARGET}/debug/${EXE_TARGET}" "${@}"
 }

shared/src/ethtool.rs

@@ -14,7 +14,11 @@ struct EthtoolValue {
 
 const ETHTOOL_SGSO: u32 = 0x00000024;
 const ETHTOOL_STSO: u32 = 0x0000001f;
+
+#[cfg(not(target_env = "musl"))]
 const SIOCETHTOOL: libc::c_ulong = libc::SIOCETHTOOL;
+#[cfg(target_env = "musl")]
+const SIOCETHTOOL: libc::c_int = libc::SIOCETHTOOL as i32;
 
 #[repr(C)]
 #[derive(Debug)]