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/*
* 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 _LOGD_LOG_KLOG_H__
#define _LOGD_LOG_KLOG_H__
#include <private/android_logger.h>
#include <sysutils/SocketListener.h>
class LogBuffer;
class LogReader;
class LogKlog : public SocketListener {
LogBuffer* logbuf;
LogReader* reader;
const log_time signature;
// Set once thread is started, separates KLOG_ACTION_READ_ALL
// and KLOG_ACTION_READ phases.
bool initialized;
// Used during each of the above phases to control logging.
bool enableLogging;
// set if we are also running auditd, to filter out audit reports from
// our copy of the kernel log
bool auditd;
static log_time correction;
public:
LogKlog(LogBuffer* buf, LogReader* reader, int fdWrite, int fdRead,
bool auditd);
int log(const char* buf, ssize_t len);
void synchronize(const char* buf, ssize_t len);
bool isMonotonic() {
return logbuf->isMonotonic();
}
static void convertMonotonicToReal(log_time& real) {
real += correction;
}
static void convertRealToMonotonic(log_time& real) {
real -= correction;
}
protected:
void sniffTime(log_time& now, const char*& buf, ssize_t len, bool reverse);
pid_t sniffPid(const char*& buf, ssize_t len);
void calculateCorrection(const log_time& monotonic, const char* real_string,
ssize_t len);
virtual bool onDataAvailable(SocketClient* cli);
};
#endif
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