Keystore libselinux rust bindings.

Provide safe wrappers around the libselinux API needed for keystore.
 * getcon
 * selinux_check_acces
 * selabel_lookup

Test: keystore2_selinux_test
Test: keystore2_selinux_rust_bindings_host_test
Bug: 159466840
Change-Id: I73b4aa2e1da9b477965b10927eba069e6346ce6e
diff --git a/keystore2/selinux/Android.bp b/keystore2/selinux/Android.bp
new file mode 100644
index 0000000..acbf5ef
--- /dev/null
+++ b/keystore2/selinux/Android.bp
@@ -0,0 +1,54 @@
+// Copyright 2020, 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.
+
+rust_library {
+    name: "libkeystore2_selinux",
+    crate_name: "keystore2_selinux",
+    srcs: [
+        "src/lib.rs",
+    ],
+
+    shared_libs: [
+        "libselinux",
+    ],
+
+    rustlibs: [
+        "libanyhow",
+        "liblog_rust",
+        "libselinux_bindgen",
+        "libthiserror",
+    ],
+}
+
+rust_test {
+    name: "keystore2_selinux_test",
+    srcs: [
+        "src/lib.rs",
+    ],
+    crate_name: "keystore2_selinux_test",
+    test_suites: ["general-tests"],
+    auto_gen_config: true,
+
+    shared_libs: [
+        "libselinux",
+    ],
+
+    rustlibs: [
+        "libandroid_logger",
+        "libanyhow",
+        "liblog_rust",
+        "libselinux_bindgen",
+        "libthiserror",
+    ],
+}