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 _LOGD_LOG_KLOG_H__ 18 #define _LOGD_LOG_KLOG_H__ 19 20 #include <sysutils/SocketListener.h> 21 #include <log/log_read.h> 22 #include "LogReader.h" 23 24 char *log_strtok_r(char *str, char **saveptr); 25 26 class LogKlog : public SocketListener { 27 LogBuffer *logbuf; 28 LogReader *reader; 29 const log_time signature; 30 const int fdWrite; // /dev/kmsg 31 const int fdRead; // /proc/kmsg 32 // Set once thread is started, separates KLOG_ACTION_READ_ALL 33 // and KLOG_ACTION_READ phases. 34 bool initialized; 35 // Used during each of the above phases to control logging. 36 bool enableLogging; 37 // set if we are also running auditd, to filter out audit reports from 38 // our copy of the kernel log 39 bool auditd; 40 41 static log_time correction; 42 43 public: 44 LogKlog(LogBuffer *buf, LogReader *reader, int fdWrite, int fdRead, bool auditd); 45 int log(const char *buf); 46 void synchronize(const char *buf); 47 48 static void convertMonotonicToReal(log_time &real) { real += correction; } 49 50 protected: 51 void sniffTime(log_time &now, const char **buf, bool reverse); 52 void calculateCorrection(const log_time &monotonic, const char *real_string); 53 virtual bool onDataAvailable(SocketClient *cli); 54 55 }; 56 57 #endif 58
