1 /*
2  * Copyright (C) 2012-2013 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 _LOGD_LOG_LISTENER_H__
18 #define _LOGD_LOG_LISTENER_H__
19 
20 #include <sysutils/SocketListener.h>
21 #include "LogReader.h"
22 
23 // DEFAULT_OVERFLOWUID is defined in linux/highuid.h, which is not part of
24 // the uapi headers for userspace to use.  This value is filled in on the
25 // out-of-band socket credentials if the OS fails to find one available.
26 // One of the causes of this is if SO_PASSCRED is set, all the packets before
27 // that point will have this value.  We also use it in a fake credential if
28 // no socket credentials are supplied.
29 #ifndef DEFAULT_OVERFLOWUID
30 #define DEFAULT_OVERFLOWUID 65534
31 #endif
32 
33 class LogListener : public SocketListener {
34     LogBufferInterface* logbuf;
35     LogReader* reader;
36 
37    public:
38     LogListener(LogBufferInterface* buf, LogReader* reader /* nullable */);
39 
40    protected:
41     virtual bool onDataAvailable(SocketClient* cli);
42 
43    private:
44     static int getLogSocket();
45 };
46 
47 #endif
48