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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Define _GNU_SOURCE to ensure that <errno.h> defines
// program_invocation_short_name which is used in GetProgramName(). Keep this at
// the top of the file since some system headers might include <errno.h> and the
// header could be skipped on subsequent includes.
#if !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
#include "base/logging.h"
#include <errno.h>
#include <iomanip>
#include "base/process/process_handle.h"
#include "base/strings/string_piece.h"
#include "base/threading/platform_thread.h"
namespace logging {
namespace {
const char* GetProgramName() {
return program_invocation_short_name ? program_invocation_short_name : "";
}
} // namespace
// InitWithSyslogPrefix generates log header for Chrome OS in syslog compatible
// format. The timezone will always be UTC regardless of devices' timezone.
// `<rfc3339_timestamp> <tickcount> <log_level>`
// `<program_name>[<pid>:<thread_id>]: `
// `[<filename>(<line_number>)] <message>`
//
// e.g.
// 2020-06-27T23:55:25.094701Z 1234 VERBOSE1 chrome[3816:3877]:
// [drm_device_handle.cc(90)] Succeeded authenticating /dev/dri/card0 in 0 ms
// with 1 attempt(s)
void LogMessage::InitWithSyslogPrefix(base::StringPiece filename,
int line,
uint64_t tick_count,
const char* log_severity_name_c_str,
const char* log_prefix,
bool enable_process_id,
bool enable_thread_id,
bool enable_timestamp,
bool enable_tickcount) {
if (log_prefix)
stream_ << log_prefix << ':';
if (enable_timestamp) {
timeval tv{};
gettimeofday(&tv, nullptr);
time_t t = tv.tv_sec;
struct tm utc_time {};
gmtime_r(&t, &utc_time);
stream_ << std::setfill('0') // Set fill to 0
<< std::setw(4) << 1900 + utc_time.tm_year << "-" // year
<< std::setw(2) << 1 + utc_time.tm_mon << "-" // month
<< std::setw(2) << utc_time.tm_mday // date
<< 'T' << std::setw(2) << utc_time.tm_hour << ":" // hour
<< std::setw(2) << utc_time.tm_min << ":" // minute
<< std::setw(2) << utc_time.tm_sec << "." // second
<< std::setw(6) << tv.tv_usec // millisecond
<< "Z "; // timezone UTC
}
if (enable_tickcount)
stream_ << tick_count << ' ';
if (severity_ >= 0) {
stream_ << log_severity_name_c_str;
} else {
stream_ << "VERBOSE" << -severity_;
}
stream_ << ' ' << GetProgramName();
if (enable_process_id || enable_thread_id) {
stream_ << "[";
if (enable_process_id) {
stream_ << base::GetUniqueIdForProcess();
}
if (enable_thread_id) {
stream_ << ':' << base::PlatformThread::CurrentId();
}
stream_ << "]";
}
stream_ << ": ";
stream_ << "[" << filename << "(" << line << ")] ";
}
} // namespace logging
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