upload android base code part6

android/system/netd/server/Network.h

@@ -0,0 +1,66 @@
+/*
+ * 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.
+ */
+
+#ifndef NETD_SERVER_NETWORK_H
+#define NETD_SERVER_NETWORK_H
+
+#include "NetdConstants.h"
+
+#include <set>
+#include <string>
+
+namespace android {
+namespace net {
+
+// A Network represents a collection of interfaces participating as a single administrative unit.
+class Network {
+public:
+    enum Type {
+        DUMMY,
+        LOCAL,
+        PHYSICAL,
+        VIRTUAL,
+    };
+
+    // You MUST ensure that no interfaces are still assigned to this network, say by calling
+    // clearInterfaces(), before deleting it. This is because interface removal may fail. If we
+    // automatically removed interfaces in the destructor, you wouldn't know if it failed.
+    virtual ~Network();
+
+    virtual Type getType() const = 0;
+    unsigned getNetId() const;
+
+    bool hasInterface(const std::string& interface) const;
+    const std::set<std::string>& getInterfaces() const;
+
+    // These return 0 on success or negative errno on failure.
+    virtual int addInterface(const std::string& interface) WARN_UNUSED_RESULT = 0;
+    virtual int removeInterface(const std::string& interface) WARN_UNUSED_RESULT = 0;
+    int clearInterfaces() WARN_UNUSED_RESULT;
+
+    std::string toString() const;
+
+protected:
+    explicit Network(unsigned netId);
+
+    const unsigned mNetId;
+    std::set<std::string> mInterfaces;
+};
+
+}  // namespace net
+}  // namespace android
+
+#endif  // NETD_SERVER_NETWORK_H