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Commit cf0037d8 authored by Matthew Maurer's avatar Matthew Maurer
Browse files

rust: Make binder-ndk-sys crate buildable via Cargo for NDK 

Test: cargo build --target=aarch64-linux-android
Bug: 368303574
Change-Id: I58e41d34bc16d28bb899dc8a58dce12627f7ab4e
parent 86e7e6be

libs/binder/rust/Android.bp

+6 −0
Original line number Diff line number Diff line
@@ -140,6 +140,9 @@ rust_bindgen { 
        "--raw-line",

        "use libc::sockaddr;",

    ],

    cflags: [

        "-DANDROID_PLATFORM",

    ],

    shared_libs: [

        "libbinder_ndk",

    ],
@@ -180,6 +183,9 @@ rust_bindgen { 
        // rustified

        "libbinder_ndk_bindgen_flags.txt",

    ],

    cflags: [

        "-DANDROID_PLATFORM",

    ],

    shared_libs: [

        "libbinder_ndk_on_trusty_mock",

        "libc++",

libs/binder/rust/sys/BinderBindings.hpp

+8 −2
Original line number Diff line number Diff line
@@ -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 { 


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

libs/binder/rust/sys/Cargo.toml

0 → 100644
+14 −0
Original line number Diff line number Diff line 
[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"

libs/binder/rust/sys/build.rs

0 → 100644
+59 −0
Original line number Diff line number Diff line 
/*

 * 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");

}

libs/binder/rust/sys/lib.rs

+1 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ use std::error::Error; 
use std::fmt;



#[cfg(not(target_os = "trusty"))]

#[allow(bad_style)]

mod bindings {

    include!(concat!(env!("OUT_DIR"), "/bindings.rs"));

}