Initial implementation of HIDL-AIDL Telephony HAL translator
Bug: 203699028
Test: Boot and grep logcat against radiocompat
Change-Id: I182edf3b1fa39b30818e79a68fc586f12b677d19
diff --git a/radio/aidl/compat/service/Android.bp b/radio/aidl/compat/service/Android.bp
new file mode 100644
index 0000000..f708b84
--- /dev/null
+++ b/radio/aidl/compat/service/Android.bp
@@ -0,0 +1,51 @@
+// Copyright (C) 2021 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.
+
+package {
+ // See: http://go/android-license-faq
+ // A large-scale-change added 'default_applicable_licenses' to import
+ // all of the 'license_kinds' from "hardware_interfaces_license"
+ // to get the below license kinds:
+ // SPDX-license-identifier-Apache-2.0
+ default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_binary {
+ name: "android.hardware.radio-service.compat",
+ relative_install_path: "hw",
+ init_rc: ["radio-compat.rc"],
+ vintf_fragments: ["radio-compat.xml"],
+ vendor: true,
+ cflags: [
+ "-Wall",
+ "-Wextra",
+ "-DANDROID_UTILS_REF_BASE_DISABLE_IMPLICIT_CONSTRUCTION",
+ ],
+ shared_libs: [
+ "android.hardware.radio-library.compat",
+ "android.hardware.radio.config-V1-ndk",
+ "android.hardware.radio.config@1.0",
+ "android.hardware.radio.config@1.1",
+ "android.hardware.radio.config@1.2",
+ "android.hardware.radio.config@1.3",
+ "libbase",
+ "libbinder_ndk",
+ "libhidlbase",
+ "libutils",
+ ],
+ srcs: [
+ "hidl-utils.cpp",
+ "service.cpp",
+ ],
+}
diff --git a/radio/aidl/compat/service/hidl-utils.cpp b/radio/aidl/compat/service/hidl-utils.cpp
new file mode 100644
index 0000000..d894966
--- /dev/null
+++ b/radio/aidl/compat/service/hidl-utils.cpp
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#include "hidl-utils.h"
+
+#include <android-base/logging.h>
+
+namespace android::hardware::hidl_utils {
+
+class HalDeathRecipient : public hidl_death_recipient {
+ void serviceDied(uint64_t /* cookie */, const wp<hidl::base::V1_0::IBase>& /* who */) override {
+ LOG(FATAL) << "One of the linked HALs died. Restarting...";
+ }
+};
+
+static const auto gHalDeathRecipient = sp<HalDeathRecipient>::make();
+
+void linkDeathToDeath(sp<::android::hidl::base::V1_0::IBase> hal) {
+ const auto linkStatus = hal->linkToDeath(gHalDeathRecipient, 0);
+ CHECK(linkStatus.withDefault(false)) << "Failed to link to HAL death";
+}
+
+} // namespace android::hardware::hidl_utils
diff --git a/radio/aidl/compat/service/hidl-utils.h b/radio/aidl/compat/service/hidl-utils.h
new file mode 100644
index 0000000..3f81a9b
--- /dev/null
+++ b/radio/aidl/compat/service/hidl-utils.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#pragma once
+
+#include <android/hidl/base/1.0/IBase.h>
+
+namespace android::hardware::hidl_utils {
+
+/**
+ * Link to a given HALs death and restart the current process in such a case.
+ *
+ * \param hal HAL to which death to link
+ */
+void linkDeathToDeath(sp<hidl::base::V1_0::IBase> hal);
+
+} // namespace android::hardware::hidl_utils
diff --git a/radio/aidl/compat/service/radio-compat.rc b/radio/aidl/compat/service/radio-compat.rc
new file mode 100644
index 0000000..a159876
--- /dev/null
+++ b/radio/aidl/compat/service/radio-compat.rc
@@ -0,0 +1,4 @@
+service vendor.radio-compat /vendor/bin/hw/android.hardware.radio-service.compat
+ class hal
+ user nobody
+ group system
diff --git a/radio/aidl/compat/service/radio-compat.xml b/radio/aidl/compat/service/radio-compat.xml
new file mode 100644
index 0000000..60f8ff5
--- /dev/null
+++ b/radio/aidl/compat/service/radio-compat.xml
@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+ <hal format="aidl">
+ <name>android.hardware.radio.config</name>
+ <fqname>IRadioConfig/default</fqname>
+ </hal>
+</manifest>
diff --git a/radio/aidl/compat/service/service.cpp b/radio/aidl/compat/service/service.cpp
new file mode 100644
index 0000000..c177dd1
--- /dev/null
+++ b/radio/aidl/compat/service/service.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#include "hidl-utils.h"
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <libradiocompat/RadioConfig.h>
+
+namespace android::hardware::radio::service {
+
+using namespace std::string_literals;
+
+static std::vector<std::shared_ptr<ndk::ICInterface>> gPublishedHals;
+
+static void publishRadioConfig() {
+ auto hidlHal = config::V1_1::IRadioConfig::getService();
+ CHECK(hidlHal) << "HIDL IRadioConfig not present in VINTF";
+
+ hidl_utils::linkDeathToDeath(hidlHal);
+
+ auto aidlHal = ndk::SharedRefBase::make<compat::RadioConfig>(hidlHal);
+ gPublishedHals.push_back(aidlHal);
+ const auto instance = compat::RadioConfig::descriptor + "/default"s;
+ const auto status = AServiceManager_addService(aidlHal->asBinder().get(), instance.c_str());
+ CHECK_EQ(status, STATUS_OK);
+}
+
+static void main() {
+ base::SetDefaultTag("radiocompat");
+ base::SetMinimumLogSeverity(base::VERBOSE);
+ LOG(DEBUG) << "Radio HAL compat service starting...";
+
+ publishRadioConfig();
+
+ LOG(DEBUG) << "Radio HAL compat service is operational";
+ ABinderProcess_joinThreadPool();
+ LOG(FATAL) << "Radio HAL compat service has stopped";
+}
+
+} // namespace android::hardware::radio::service
+
+int main() {
+ android::hardware::radio::service::main();
+ return EXIT_FAILURE; // should not reach
+}