1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/windows_services/service_program/logging_support.h"
#include <windows.h>
#include <stdint.h>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/process/process.h"
#include "base/strings/string_number_conversions.h"
#include "base/win/scoped_handle.h"
#include "base/win/windows_handle_util.h"
#include "chrome/windows_services/service_program/switches.h"
void InitializeLogging(const base::CommandLine& command_line) {
// Log to stderr and an attached debugger by default.
logging::LoggingSettings settings;
settings.logging_dest =
logging::LOG_TO_SYSTEM_DEBUG_LOG | logging::LOG_TO_STDERR;
// Get a handle to a potential test process that wishes to read logs from this
// service process.
base::Process source_process;
if (uint32_t source_pid; base::StringToUint(command_line.GetSwitchValueASCII(
switches::kLogFileSource),
&source_pid) &&
source_pid) {
source_process =
base::Process::OpenWithAccess(source_pid, PROCESS_DUP_HANDLE);
}
// If a handle to a test process was acquired and it provided a handle to
// which this service process should write, duplicate that file handle into
// the service process.
base::win::ScopedHandle log_file_handle;
if (uint32_t file_handle_value;
source_process.IsValid() &&
base::StringToUint(
command_line.GetSwitchValueASCII(switches::kLogFileHandle),
&file_handle_value) &&
file_handle_value) {
HANDLE file_handle = base::win::Uint32ToHandle(file_handle_value);
if (file_handle != INVALID_HANDLE_VALUE) {
HANDLE duplicate;
if (::DuplicateHandle(source_process.Handle(), file_handle,
::GetCurrentProcess(), &duplicate,
/*dwDesiredAccess=*/0, /*bInheritHandle=*/FALSE,
DUPLICATE_SAME_ACCESS)) {
log_file_handle.Set(duplicate);
}
}
}
// Direct logging to a file handle rather than stderr, if provided.
if (log_file_handle.is_valid()) {
settings.logging_dest &= ~logging::LOG_TO_STDERR;
settings.logging_dest |= logging::LOG_TO_FILE;
// Pass ownership of this handle to logging.
settings.log_file = log_file_handle.release();
// Include the service's pid, tid, and the tick count in log messages for
// the sake of tests.
logging::SetLogItems(/*enable_process_id=*/true,
/*enable_thread_id=*/true,
/*enable_timestamp=*/false,
/*enable_tickcount=*/true);
}
logging::InitLogging(settings);
}
|
