rust: Make binder-ndk-sys crate buildable via Cargo for NDK
Test: cargo build --target=aarch64-linux-android
Bug: 368303574
Change-Id: I58e41d34bc16d28bb899dc8a58dce12627f7ab4e
diff --git a/libs/binder/rust/Android.bp b/libs/binder/rust/Android.bp
index 4545d7b..19df972 100644
--- a/libs/binder/rust/Android.bp
+++ b/libs/binder/rust/Android.bp
@@ -140,6 +140,9 @@
"--raw-line",
"use libc::sockaddr;",
],
+ cflags: [
+ "-DANDROID_PLATFORM",
+ ],
shared_libs: [
"libbinder_ndk",
],
@@ -180,6 +183,9 @@
// rustified
"libbinder_ndk_bindgen_flags.txt",
],
+ cflags: [
+ "-DANDROID_PLATFORM",
+ ],
shared_libs: [
"libbinder_ndk_on_trusty_mock",
"libc++",
diff --git a/libs/binder/rust/sys/BinderBindings.hpp b/libs/binder/rust/sys/BinderBindings.hpp
index bd666fe..557f0e8 100644
--- a/libs/binder/rust/sys/BinderBindings.hpp
+++ b/libs/binder/rust/sys/BinderBindings.hpp
@@ -15,15 +15,19 @@
*/
#include <android/binder_ibinder.h>
+#include <android/binder_parcel.h>
+#include <android/binder_status.h>
+
+/* Platform only */
+#if defined(ANDROID_PLATFORM) || defined(__ANDROID_VENDOR__)
#include <android/binder_ibinder_platform.h>
#include <android/binder_manager.h>
-#include <android/binder_parcel.h>
#include <android/binder_parcel_platform.h>
#include <android/binder_process.h>
#include <android/binder_rpc.h>
#include <android/binder_shell.h>
#include <android/binder_stability.h>
-#include <android/binder_status.h>
+#endif
namespace android {
@@ -81,8 +85,10 @@
enum {
FLAG_ONEWAY = FLAG_ONEWAY,
+#if defined(ANDROID_PLATFORM) || defined(__ANDROID_VENDOR__)
FLAG_CLEAR_BUF = FLAG_CLEAR_BUF,
FLAG_PRIVATE_LOCAL = FLAG_PRIVATE_LOCAL,
+#endif
};
} // namespace consts
diff --git a/libs/binder/rust/sys/Cargo.toml b/libs/binder/rust/sys/Cargo.toml
new file mode 100644
index 0000000..ad8e9c2
--- /dev/null
+++ b/libs/binder/rust/sys/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "android-binder-ndk-sys"
+version = "0.1.0"
+edition = "2021"
+description = "Bindgen bindings to android binder, restricted to the NDK"
+license = "Apache-2.0"
+
+[dependencies]
+
+[lib]
+path = "lib.rs"
+
+[build-dependencies]
+bindgen = "0.70.1"
diff --git a/libs/binder/rust/sys/build.rs b/libs/binder/rust/sys/build.rs
new file mode 100644
index 0000000..cb9c65b
--- /dev/null
+++ b/libs/binder/rust/sys/build.rs
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+use std::env;
+use std::path::PathBuf;
+
+fn main() {
+ let ndk_home = PathBuf::from(env::var("ANDROID_NDK_HOME").unwrap());
+ let toolchain = ndk_home.join("toolchains/llvm/prebuilt/linux-x86_64/");
+ let sysroot = toolchain.join("sysroot");
+ let bindings = bindgen::Builder::default()
+ .clang_arg(format!("--sysroot={}", sysroot.display()))
+ // TODO figure out what the "standard" #define is and use that instead
+ .header("BinderBindings.hpp")
+ .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
+ // Keep in sync with libbinder_ndk_bindgen_flags.txt
+ .default_enum_style(bindgen::EnumVariation::Rust { non_exhaustive: true })
+ .constified_enum("android::c_interface::consts::.*")
+ .allowlist_type("android::c_interface::.*")
+ .allowlist_type("AStatus")
+ .allowlist_type("AIBinder_Class")
+ .allowlist_type("AIBinder")
+ .allowlist_type("AIBinder_Weak")
+ .allowlist_type("AIBinder_DeathRecipient")
+ .allowlist_type("AParcel")
+ .allowlist_type("binder_status_t")
+ .blocklist_function("vprintf")
+ .blocklist_function("strtold")
+ .blocklist_function("_vtlog")
+ .blocklist_function("vscanf")
+ .blocklist_function("vfprintf_worker")
+ .blocklist_function("vsprintf")
+ .blocklist_function("vsnprintf")
+ .blocklist_function("vsnprintf_filtered")
+ .blocklist_function("vfscanf")
+ .blocklist_function("vsscanf")
+ .blocklist_function("vdprintf")
+ .blocklist_function("vasprintf")
+ .blocklist_function("strtold_l")
+ .allowlist_function(".*")
+ .generate()
+ .expect("Couldn't generate bindings");
+ let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
+ bindings.write_to_file(out_path.join("bindings.rs")).expect("Couldn't write bindings.");
+ println!("cargo::rustc-link-lib=binder_ndk");
+}
diff --git a/libs/binder/rust/sys/lib.rs b/libs/binder/rust/sys/lib.rs
index 5352473..349e5a9 100644
--- a/libs/binder/rust/sys/lib.rs
+++ b/libs/binder/rust/sys/lib.rs
@@ -20,6 +20,7 @@
use std::fmt;
#[cfg(not(target_os = "trusty"))]
+#[allow(bad_style)]
mod bindings {
include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
}