move Rust sources to top level, C sources into c_src

[bcachefs-tools-debian] / bch_bindgen / build.rs

diff --git a/bch_bindgen/build.rs b/bch_bindgen/build.rs
new file mode 100644 (file)
index 0000000..facea21
--- /dev/null
+++ b/bch_bindgen/build.rs
@@ -0,0 +1,116 @@
+
+#[derive(Debug)]
+pub struct Fix753 {}
+impl bindgen::callbacks::ParseCallbacks for Fix753 {
+    fn item_name(&self, original_item_name: &str) -> Option<String> {
+        Some(original_item_name.trim_start_matches("Fix753_").to_owned())
+    }
+}
+
+fn main() {
+    use std::path::PathBuf;
+
+    println!("cargo:rerun-if-changed=src/libbcachefs_wrapper.h");
+
+    let out_dir: PathBuf = std::env::var_os("OUT_DIR")
+        .expect("ENV Var 'OUT_DIR' Expected")
+        .into();
+    let top_dir: PathBuf = std::env::var_os("CARGO_MANIFEST_DIR")
+        .expect("ENV Var 'CARGO_MANIFEST_DIR' Expected")
+        .into();
+
+    let libbcachefs_inc_dir = std::path::Path::new("../c_src");
+
+    let bindings = bindgen::builder()
+        .header(
+            top_dir
+                .join("src")
+                .join("libbcachefs_wrapper.h")
+                .display()
+                .to_string(),
+        )
+        .clang_arg(format!(
+            "-I{}",
+            libbcachefs_inc_dir.join("include").display()
+        ))
+        .clang_arg(format!("-I{}", libbcachefs_inc_dir.display()))
+        .clang_arg("-DZSTD_STATIC_LINKING_ONLY")
+        .clang_arg("-DNO_BCACHEFS_FS")
+        .clang_arg("-D_GNU_SOURCE")
+        .clang_arg("-DRUST_BINDGEN")
+        .clang_arg("-fkeep-inline-functions")
+        .derive_debug(true)
+        .derive_default(true)
+        .layout_tests(true)
+        .default_enum_style(bindgen::EnumVariation::Rust {
+            non_exhaustive: true,
+        })
+        .allowlist_function("bcachefs_usage")
+        .allowlist_function("raid_init")
+        .allowlist_function("cmd_.*")
+        .allowlist_function(".*_cmds")
+        .allowlist_function(".*bch2_.*")
+        .allowlist_function("bio_.*")
+        .allowlist_function("derive_passphrase")
+        .allowlist_function("request_key")
+        .allowlist_function("add_key")
+        .allowlist_function("keyctl_search")
+        .allowlist_function("match_string")
+        .allowlist_function("printbuf.*")
+        .blocklist_type("bch_extent_ptr")
+        .blocklist_type("btree_node")
+        .blocklist_type("bch_extent_crc32")
+        .blocklist_type("rhash_lock_head")
+        .blocklist_type("srcu_struct")
+        .allowlist_var("BCH_.*")
+        .allowlist_var("KEY_SPEC_.*")
+        .allowlist_var("Fix753_FMODE_.*")
+        .allowlist_var("bch.*")
+        .allowlist_var("__bch2.*")
+        .allowlist_var("__BTREE_ITER.*")
+        .allowlist_var("BTREE_ITER.*")
+        .blocklist_item("bch2_bkey_ops")
+        .allowlist_type("bch_.*")
+        .allowlist_type("fsck_err_opts")
+        .rustified_enum("fsck_err_opts")
+        .allowlist_type("nonce")
+        .no_debug("bch_replicas_padded")
+        .newtype_enum("bch_kdf_types")
+        .rustified_enum("bch_key_types")
+        .opaque_type("gendisk")
+        .opaque_type("gc_stripe")
+        .opaque_type("open_bucket.*")
+        .opaque_type("replicas_delta_list")
+        .no_copy("btree_trans")
+        .no_copy("printbuf")
+        .no_partialeq("bkey")
+        .no_partialeq("bpos")
+        .generate_inline_functions(true)
+        .parse_callbacks(Box::new(Fix753 {}))
+        .generate()
+        .expect("BindGen Generation Failiure: [libbcachefs_wrapper]");
+    bindings
+        .write_to_file(out_dir.join("bcachefs.rs"))
+        .expect("Writing to output file failed for: `bcachefs.rs`");
+
+    let keyutils = pkg_config::probe_library("libkeyutils").expect("Failed to find keyutils lib");
+    let bindings = bindgen::builder()
+        .header(
+            top_dir
+                .join("src")
+                .join("keyutils_wrapper.h")
+                .display()
+                .to_string(),
+        )
+        .clang_args(
+            keyutils
+                .include_paths
+                .iter()
+                .map(|p| format!("-I{}", p.display())),
+        )
+        .generate()
+        .expect("BindGen Generation Failiure: [Keyutils]");
+    bindings
+        .write_to_file(out_dir.join("keyutils.rs"))
+        .expect("Writing to output file failed for: `keyutils.rs`");
+}