libbinder_ndk: distinguish exception/status_t
Previously here, I had erroneously used EX_* values instead of using
values corresponding to status_t.
This CL defines the set of errors that can be returned from APIs and
constrains the return set to be exactly and only those values.
Exception values are currently not used, but they will be used for
a Status-like object since they are required for communicating with
the SDK (Java). This is also why they were not removed.
Bug: 111445392
Test: ./ndk/runtests.sh
Change-Id: I24bbebae60c167d7e050ee608c24cc1ffc8a9101
diff --git a/libs/binder/ndk/status_internal.h b/libs/binder/ndk/status_internal.h
new file mode 100644
index 0000000..41b124c
--- /dev/null
+++ b/libs/binder/ndk/status_internal.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#pragma once
+
+#include <android/binder_status.h>
+
+#include <binder/Status.h>
+#include <utils/Errors.h>
+
+// This collapses the statuses into the declared range.
+binder_status_t PruneStatusT(android::status_t status);
+
+// This collapses the exception into the declared range.
+binder_exception_t PruneException(int32_t exception);