FwmarkClient.h revision 3a069e6a76752a0ee73c60f276ae362d1c01467f 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef NETD_CLIENT_FWMARK_CLIENT_H
18#define NETD_CLIENT_FWMARK_CLIENT_H
19
20#include <sys/socket.h>
21
22class FwmarkClient {
23public:
24    // Returns true if a socket of the given |family| should be sent to the fwmark server to have
25    // its SO_MARK set.
26    static bool shouldSetFwmark(int family);
27
28    FwmarkClient();
29    ~FwmarkClient();
30
31    // Sends |data| to the fwmark server, along with |fd| as ancillary data using cmsg(3).
32    // Returns 0 on success or a negative errno value on failure.
33    int send(void* data, size_t len, int fd);
34
35private:
36    int mChannel;
37};
38
39#endif  // NETD_CLIENT_FWMARK_CLIENT_H
40