内存缓存和ext4完整支持

2026-09-13 01:24:42 +08:00 · 2026-07-29 12:35:25 +08:00
parent 86dbf7482f
commit a9f3f71063
27 changed files with 1813 additions and 175 deletions
@@ -0,0 +1,112 @@
+use std::{env, path::PathBuf, process::Command};
+
+fn main() {
+    let target = env::var("TARGET").unwrap();
+    if target != "x86_64-unknown-uefi" {
+        return;
+    }
+
+    let manifest_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
+    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
+    let lwext4_dir = manifest_dir.join("third_party/lwext4");
+    let config_dir = manifest_dir.join("third_party/lwext4_config/include/generated");
+    let shim = manifest_dir.join("src/fs/lwext4_shim.c");
+
+    println!("cargo:rerun-if-changed={}", shim.display());
+    println!(
+        "cargo:rerun-if-changed={}",
+        lwext4_dir.join("src").display()
+    );
+    println!(
+        "cargo:rerun-if-changed={}",
+        manifest_dir
+            .join("third_party/lwext4_config/include/generated/ext4_config.h")
+            .display()
+    );
+
+    let sources = [
+        "ext4.c",
+        "ext4_balloc.c",
+        "ext4_bitmap.c",
+        "ext4_bcache.c",
+        "ext4_block_group.c",
+        "ext4_blockdev.c",
+        "ext4_crc32.c",
+        "ext4_debug.c",
+        "ext4_dir.c",
+        "ext4_dir_idx.c",
+        "ext4_extent.c",
+        "ext4_fs.c",
+        "ext4_hash.c",
+        "ext4_ialloc.c",
+        "ext4_inode.c",
+        "ext4_journal.c",
+        "ext4_mbr.c",
+        "ext4_super.c",
+        "ext4_trans.c",
+        "ext4_xattr.c",
+    ];
+
+    let clang = env::var("CLANG").unwrap_or_else(|_| "clang".to_string());
+    let ar = env::var("AR").unwrap_or_else(|_| "llvm-ar".to_string());
+    let mut objects = Vec::new();
+
+    for source in sources {
+        let input = lwext4_dir.join("src").join(source);
+        let output = out_dir.join(format!("{source}.obj"));
+        compile_c(&clang, &input, &output, &lwext4_dir, &config_dir);
+        objects.push(output);
+    }
+
+    let shim_obj = out_dir.join("zeroos_lwext4_shim.obj");
+    compile_c(&clang, &shim, &shim_obj, &lwext4_dir, &config_dir);
+    objects.push(shim_obj);
+
+    let lib = out_dir.join("libzeroos_lwext4.a");
+    let status = Command::new(&ar)
+        .arg("crs")
+        .arg(&lib)
+        .args(&objects)
+        .status()
+        .unwrap_or_else(|error| panic!("failed to run {ar}: {error}"));
+    assert!(status.success(), "{ar} failed while archiving lwext4");
+
+    println!("cargo:rustc-link-search=native={}", out_dir.display());
+    println!("cargo:rustc-link-lib=static=zeroos_lwext4");
+}
+
+fn compile_c(
+    clang: &str,
+    input: &PathBuf,
+    output: &PathBuf,
+    lwext4_dir: &PathBuf,
+    config_dir: &PathBuf,
+) {
+    let status = Command::new(clang)
+        .arg("-target")
+        .arg("x86_64-unknown-windows")
+        .arg("-ffreestanding")
+        .arg("-fno-stack-protector")
+        .arg("-fno-builtin")
+        .arg("-mno-red-zone")
+        .arg("-O2")
+        .arg("-Wall")
+        .arg("-Wno-unused-parameter")
+        .arg("-Wno-missing-braces")
+        .arg("-DCONFIG_USE_DEFAULT_CFG=0")
+        .arg("-I")
+        .arg(lwext4_dir.join("include"))
+        .arg("-I")
+        .arg(config_dir.parent().unwrap())
+        .arg("-c")
+        .arg(input)
+        .arg("-o")
+        .arg(output)
+        .status()
+        .unwrap_or_else(|error| panic!("failed to run {clang}: {error}"));
+    assert!(
+        status.success(),
+        "{clang} failed while compiling {}",
+        input.display()
+    );
+}