feat(syscalls): full coverage of Linux 1.0 syscalls (WIP)

.github/workflows/ci.yml

@@ -12,23 +12,49 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  lint:
-    name: Clippy + fmt
+  format:
+    name: fmt
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@stable
         with:
-          components: clippy, rustfmt
-
-      - uses: Swatinem/rust-cache@v2
+          components: rustfmt
 
       - name: Check formatting
         run: cargo fmt --all -- --check
 
+  lint:
+    name: Clippy (${{ matrix.target }})
+    runs-on: ${{ matrix.runner }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: ubuntu-latest
+            target: i686-unknown-linux-gnu
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+          components: clippy
+
+      - uses: Swatinem/rust-cache@v2
+
       - name: Clippy
-        run: cargo clippy --all --lib --tests --all-features -- -D warnings
+        run: |
+          cargo clippy \
+          --target ${{ matrix.target }} \
+          --all \
+          --lib \
+          --tests \
+          --all-features \
+          -- -D warnings
 
   test:
     name: Tests (${{ matrix.target }})
@@ -40,10 +66,6 @@ jobs:
         include:
           - runner: ubuntu-latest
             target: i686-unknown-linux-gnu
-          - runner: ubuntu-latest
-            target: x86_64-unknown-linux-gnu
-          - runner: ubuntu-24.04-arm
-            target: aarch64-unknown-linux-gnu
 
     steps:
       - uses: actions/checkout@v6
@@ -85,12 +107,6 @@ jobs:
           - runner: ubuntu-latest
             target: i686-unknown-linux-gnu
 
-          - runner: ubuntu-latest
-            target: x86_64-unknown-linux-gnu
-
-          - runner: ubuntu-24.04-arm
-            target: aarch64-unknown-linux-gnu
-
     steps:
       - uses: actions/checkout@v6
         with:
@@ -146,14 +162,22 @@ jobs:
           parallel-finished: true
 
   miri:
-    name: Miri
-    runs-on: ubuntu-latest
+    name: Miri (${{ matrix.target }})
+    runs-on: ${{ matrix.runner }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: ubuntu-latest
+            target: i686-unknown-linux-gnu
 
     steps:
       - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@nightly
         with:
+          targets: ${{ matrix.target }}
           components: miri
 
       - uses: Swatinem/rust-cache@v2
@@ -162,4 +186,9 @@ jobs:
         run: cargo +nightly miri setup
 
       - name: Run Miri tests
-        run: MIRIFLAGS="-Zmiri-strict-provenance" cargo +nightly miri test --workspace --lib --tests
+        run: |
+          MIRIFLAGS="-Zmiri-strict-provenance" cargo +nightly miri test \
+            --target ${{ matrix.target }} \
+            --workspace \
+            --lib \
+            --tests

Cargo.toml

@@ -8,7 +8,8 @@ repository = "https://github.com/olukowski/celer"
 readme = "README.md"
 
 [workspace]
-members = ["system/linux/syscalls"]
+members = ["system/linux/ctypes", "system/linux/syscalls"]
 
 [workspace.dependencies]
-libc = "0.2.183"
+celer_system_linux_ctypes = { path = "system/linux/ctypes", version = "0.1.0" }
+celer_system_linux_syscalls = { path = "system/linux/syscalls", version = "0.1.0" }

system/linux/ctypes/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "celer_system_linux_ctypes"
+version = "0.1.0"
+edition = "2024"
+license = "MIT OR Apache-2.0"
+description = "Linux C types for Celer"
+repository = "https://github.com/olukowski/celer"
+readme = "README.md"

system/linux/ctypes/README.md

@@ -0,0 +1,3 @@
+# Celer System Linux C Types
+
+This crate provides Linux C types for use with Celer.

system/linux/ctypes/src/lib.rs

@@ -0,0 +1,56 @@
+#![no_std]
+#![cfg(target_os = "linux")]
+#![cfg(target_arch = "x86")]
+
+use core::ffi::{
+    c_char, c_int, c_long, c_longlong, c_short, c_uchar, c_uint, c_ulong,
+    c_ulonglong, c_ushort, c_void,
+};
+
+/// Equivalent to the `ssize_t` type in C.
+pub type SsizeT = isize;
+
+/// Equivalent to the `size_t` type in C.
+pub type SizeT = usize;
+
+/// Equivalent to the `char` type in C.
+pub type Char = c_char;
+
+/// Equivalent to the `unsigned char` type in C.
+pub type UnsignedChar = c_uchar;
+
+/// Equivalent to the `short` type in C.
+pub type Short = c_short;
+
+/// Equivalent to the `unsigned short` type in C.
+pub type UnsignedShort = c_ushort;
+
+/// Equivalent to the `int` type in C.
+pub type Int = c_int;
+
+/// Equivalent to the `unsigned int` type in C.
+pub type UnsignedInt = c_uint;
+
+/// Equivalent to the `long` type in C.
+pub type Long = c_long;
+
+/// Equivalent to the `unsigned long` type in C.
+pub type UnsignedLong = c_ulong;
+
+/// Equivalent to the `long long` type in C.
+pub type LongLong = c_longlong;
+
+/// Equivalent to the `unsigned long long` type in C.
+pub type UnsignedLongLong = c_ulonglong;
+
+/// Equivalent to the `void` type in C.
+pub type Void = c_void;
+
+/// Equivalent to the `umode_t` type in the Linux kernel.
+pub type UModeT = UnsignedShort;
+
+/// Equivalent to the `off_t` type in the Linux kernel.
+pub type OffT = Long;
+
+/// Equivalent to the `pid_t` type in the Linux kernel.
+pub type PidT = Int;

system/linux/syscalls/Cargo.toml

@@ -8,11 +8,7 @@ repository = "https://github.com/olukowski/celer"
 readme = "README.md"
 
 [dependencies]
-libc.workspace = true
-
-[[example]]
-name = "hello"
-test = false
+celer_system_linux_ctypes.workspace = true
 
 [lints.rust]
 unexpected_cfgs = { level = "warn", check-cfg = ['cfg(coverage,coverage_nightly)'] }

system/linux/syscalls/README.md

@@ -1,4 +1,4 @@
 # Celer System Linux Syscalls
 
 Very thin wrappers around Linux syscalls.
-Currently only supports aarch64 and x86_64.
+Currently supports x86.