1 files changed, 35 insertions, 0 deletions
diff --git a/luni/src/main/native/java_io_FileDescriptor.cpp b/luni/src/main/native/java_io_FileDescriptor.cpp
new file mode 100644
index 0000000..fe7e07e
--- /dev/null
+++ b/luni/src/main/native/java_io_FileDescriptor.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#define LOG_TAG "FileDescriptor"
+
+#include "JniConstants.h"
+
+#include <sys/socket.h>
+#include <sys/types.h>
+
+static jboolean FileDescriptor_isSocket(JNIEnv*, jclass, jint fd) {
+  int error;
+  socklen_t error_length = sizeof(error);
+  return TEMP_FAILURE_RETRY(getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &error_length));
+}
+
+static JNINativeMethod gMethods[] = {
+  NATIVE_METHOD(FileDescriptor, isSocket, "(I)Z"),
+};
+void register_java_io_FileDescriptor(JNIEnv* env) {
+  jniRegisterNativeMethods(env, "java/io/FileDescriptor", gMethods, NELEM(gMethods));
+}