Add Rust bindings to get the list of HALs.
Test: vintf_test
Change-Id: Ic64b53763a4811c79173cdc585a40ccba956ceb9
diff --git a/keystore2/src/vintf/vintf.cpp b/keystore2/src/vintf/vintf.cpp
new file mode 100644
index 0000000..1e69e7e
--- /dev/null
+++ b/keystore2/src/vintf/vintf.cpp
@@ -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.
+ */
+
+#include "vintf.hpp"
+
+#include <vintf/HalManifest.h>
+#include <vintf/VintfObject.h>
+
+// Converts a set<string> into a C-style array of C strings.
+static char** convert(const std::set<std::string>& names) {
+ char** ret = new char*[names.size()];
+ char** ptr = ret;
+ for (const auto& name : names) {
+ *(ptr++) = strdup(name.c_str());
+ }
+ return ret;
+}
+
+char** getHalNames(size_t* len) {
+ auto manifest = android::vintf::VintfObject::GetDeviceHalManifest();
+ const auto names = manifest->getHalNames();
+ *len = names.size();
+ return convert(names);
+}
+
+char** getHalNamesAndVersions(size_t* len) {
+ auto manifest = android::vintf::VintfObject::GetDeviceHalManifest();
+ const auto names = manifest->getHalNamesAndVersions();
+ *len = names.size();
+ return convert(names);
+}
+
+void freeNames(char** names, size_t len) {
+ for (int i = 0; i < len; i++) {
+ free(names[i]);
+ }
+ delete[] names;
+}