[vm tool] Introduce check-feature-enabled
Introduce this command to allow host to query feature (such as
com.android.kvm.LLPVM_CHANGES) is enabled on device. Implement this in
libavf_features, so that virtmrg can share code.
Bug: 325630143
Test: Inspect output of vm check-feature-enabled
com.android.kvm.LLPVM_CHANGES
Change-Id: I9f11f6d8a98e1df6926492edee2152908c770e73
diff --git a/libs/avf_features/Android.bp b/libs/avf_features/Android.bp
new file mode 100644
index 0000000..71f33db
--- /dev/null
+++ b/libs/avf_features/Android.bp
@@ -0,0 +1,26 @@
+package {
+ default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+rust_defaults {
+ name: "libavf_features.defaults",
+ crate_name: "avf_features",
+ defaults: ["avf_build_flags_rust"],
+ srcs: ["src/lib.rs"],
+ edition: "2021",
+ prefer_rlib: true,
+ rustlibs: [
+ "android.system.virtualizationservice-rust",
+ "libanyhow",
+ "liblog_rust",
+ ],
+}
+
+rust_library {
+ name: "libavf_features",
+ defaults: ["libavf_features.defaults"],
+ apex_available: [
+ "//apex_available:platform",
+ "com.android.virt",
+ ],
+}
diff --git a/libs/avf_features/src/lib.rs b/libs/avf_features/src/lib.rs
new file mode 100644
index 0000000..c0faab0
--- /dev/null
+++ b/libs/avf_features/src/lib.rs
@@ -0,0 +1,38 @@
+// Copyright 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.
+
+//! Provide functionality for handling AVF build-time feature flags.
+
+use android_system_virtualizationservice::aidl::android::system::virtualizationservice::{
+ IVirtualizationService::FEATURE_DICE_CHANGES, IVirtualizationService::FEATURE_LLPVM_CHANGES,
+ IVirtualizationService::FEATURE_MULTI_TENANT,
+ IVirtualizationService::FEATURE_REMOTE_ATTESTATION,
+ IVirtualizationService::FEATURE_VENDOR_MODULES,
+};
+use log::warn;
+
+/// Check if an AVF feature is enabled.
+pub fn is_feature_enabled(feature: &str) -> bool {
+ match feature {
+ FEATURE_DICE_CHANGES => cfg!(dice_changes),
+ FEATURE_LLPVM_CHANGES => cfg!(llpvm_changes),
+ FEATURE_MULTI_TENANT => cfg!(multi_tenant),
+ FEATURE_REMOTE_ATTESTATION => cfg!(remote_attestation),
+ FEATURE_VENDOR_MODULES => cfg!(vendor_modules),
+ _ => {
+ warn!("unknown feature {feature}");
+ false
+ }
+ }
+}