Add prng_seeder utility
This binary seeds a FIPS-approved DRBG from /dev/hw_random and then
serves seeds to other processes on the system using a socket
(/dev/socket/prng_seeder) that is passed in by init.
Bug: 243933553
Test: Started under init and verified correct operation using strace
Change-Id: Id4461a402d1ac92180a54cc4b241a2720b94d8de
diff --git a/prng_seeder/cutils_wrapper.h b/prng_seeder/cutils_wrapper.h
new file mode 100644
index 0000000..9c1fe56
--- /dev/null
+++ b/prng_seeder/cutils_wrapper.h
@@ -0,0 +1,15 @@
+// Copyright (C) 2022 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 <cutils/sockets.h>