Merge "Add noop implementation of the IVmCapabilitiesService" into main

The IVmCapabilitiesService HAL is used in a flow to grant a pVM a capability to

issue vendor-specific SMCs. For more information see: TODO(ioffe): link the docs

Here is a brief overview of the subdirectories structure:

* default/ - a reference implementation of the HAL that partners can integrate

    in their products.

* noop/ - a no-op implementation is used in cuttlefish for mixed build testing.

* vts/ - VTS tests for this HAL.

package {

    default_team: "trendy_team_virtualization",

    default_applicable_licenses: ["Android-Apache-2.0"],

}

rust_binary {

    name: "android.hardware.virtualization.capabilities.capabilities_service-noop",

    relative_install_path: "hw",

    vendor: true,

    installable: true,

    prefer_rlib: true,

    rustlibs: [

        "android.hardware.virtualization.capabilities.capabilities_service-V1-rust",

        "libanyhow",

        "libandroid_logger",

        "libbinder_rs",

        "liblog_rust",

    ],

    srcs: [

        "src/main.rs",

    ],

    init_rc: [

        "android.hardware.virtualization.capabilities.no_op_vm_capabilities_service.rc",

    ],

    vintf_fragment_modules: [

        "android.hardware.virtualization.capabilities.no_op_vm_capabilities_service.xml",

    ],

}

vintf_fragment {

    name: "android.hardware.virtualization.capabilities.no_op_vm_capabilities_service.xml",

    src: "android.hardware.virtualization.capabilities.no_op_vm_capabilities_service.xml",

    vendor: true,

}

service vendor.vm_capabilities_service /vendor/bin/hw/android.hardware.virtualization.capabilities.capabilities_service-noop

  interface aidl android.hardware.virtualization.capabilities.IVmCapabilitiesService/noop

  class hal

  disabled

  user nobody

  group nobody

<manifest version="1.0" type="device">

    <hal format="aidl">

        <name>android.hardware.virtualization.capabilities</name>

        <version>1</version>

        <interface>

            <name>IVmCapabilitiesService</name>

            <instance>noop</instance>

        </interface>

    </hal>

</manifest>

/*

 * Copyright (C) 2025 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.

 */

//! No-op implementation of the IVmCapabilitiesService AIDL interface.

use android_hardware_virtualization_capabilities_capabilities_service::aidl::android::hardware::virtualization::capabilities::IVmCapabilitiesService::IVmCapabilitiesService;

use binder::{Interface, ParcelFileDescriptor};

use log::info;

/// No-op implementation of IVmCapabilitiesService

pub struct NoOpVmCapabilitiesService {}

impl NoOpVmCapabilitiesService {

    pub fn init() -> NoOpVmCapabilitiesService {

        let service = NoOpVmCapabilitiesService {};

        service

    }

}

impl Interface for NoOpVmCapabilitiesService {}

impl IVmCapabilitiesService for NoOpVmCapabilitiesService {

    fn grantAccessToVendorTeeServices(&self,

        vm_fd: &ParcelFileDescriptor, tee_services: &[String]) -> binder::Result<()> {

        info!("received {vm_fd:?} {tee_services:?}");

        Ok(())

    }

}