Mark Salyzyn | e73a18b | 2014-10-15 08:49:39 -0700 | [diff] [blame] | 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 | |
Mark Salyzyn | 8b8bfd2 | 2016-09-30 13:30:33 -0700 | [diff] [blame] | 20 | #include <private/android_logger.h> |
Mark Salyzyn | e73a18b | 2014-10-15 08:49:39 -0700 | [diff] [blame] | 21 | #include <sysutils/SocketListener.h> |
Mark Salyzyn | e73a18b | 2014-10-15 08:49:39 -0700 | [diff] [blame] | 22 | |
Mark Salyzyn | a92051d | 2016-02-23 08:55:43 -0800 | [diff] [blame] | 23 | class LogBuffer; |
| 24 | class LogReader; |
| 25 | |
Mark Salyzyn | e73a18b | 2014-10-15 08:49:39 -0700 | [diff] [blame] | 26 | class LogKlog : public SocketListener { |
Mark Salyzyn | 6505953 | 2017-03-10 14:31:54 -0800 | [diff] [blame] | 27 | LogBuffer* logbuf; |
| 28 | LogReader* reader; |
Mark Salyzyn | e73a18b | 2014-10-15 08:49:39 -0700 | [diff] [blame] | 29 | const log_time signature; |
Mark Salyzyn | e73a18b | 2014-10-15 08:49:39 -0700 | [diff] [blame] | 30 | // Set once thread is started, separates KLOG_ACTION_READ_ALL |
| 31 | // and KLOG_ACTION_READ phases. |
| 32 | bool initialized; |
| 33 | // Used during each of the above phases to control logging. |
| 34 | bool enableLogging; |
| 35 | // set if we are also running auditd, to filter out audit reports from |
| 36 | // our copy of the kernel log |
| 37 | bool auditd; |
| 38 | |
| 39 | static log_time correction; |
| 40 | |
Mark Salyzyn | 6505953 | 2017-03-10 14:31:54 -0800 | [diff] [blame] | 41 | public: |
| 42 | LogKlog(LogBuffer* buf, LogReader* reader, int fdWrite, int fdRead, |
| 43 | bool auditd); |
Mark Salyzyn | 530bd6c | 2016-08-11 08:02:06 -0700 | [diff] [blame] | 44 | int log(const char* buf, ssize_t len); |
| 45 | void synchronize(const char* buf, ssize_t len); |
Mark Salyzyn | e73a18b | 2014-10-15 08:49:39 -0700 | [diff] [blame] | 46 | |
Mark Salyzyn | 6505953 | 2017-03-10 14:31:54 -0800 | [diff] [blame] | 47 | bool isMonotonic() { |
| 48 | return logbuf->isMonotonic(); |
| 49 | } |
| 50 | static void convertMonotonicToReal(log_time& real) { |
| 51 | real += correction; |
| 52 | } |
| 53 | static void convertRealToMonotonic(log_time& real) { |
| 54 | real -= correction; |
| 55 | } |
Mark Salyzyn | e73a18b | 2014-10-15 08:49:39 -0700 | [diff] [blame] | 56 | |
Mark Salyzyn | 6505953 | 2017-03-10 14:31:54 -0800 | [diff] [blame] | 57 | protected: |
Bernie Innocenti | 440e035 | 2019-01-16 15:25:18 +0900 | [diff] [blame^] | 58 | log_time sniffTime(const char*& buf, ssize_t len, bool reverse); |
| 59 | pid_t sniffPid(const char*& buf, ssize_t len); |
| 60 | void calculateCorrection(const log_time& monotonic, const char* real_string, ssize_t len); |
| 61 | virtual bool onDataAvailable(SocketClient* cli); |
Mark Salyzyn | e73a18b | 2014-10-15 08:49:39 -0700 | [diff] [blame] | 62 | }; |
| 63 | |
| 64 | #endif |