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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "procinterrupt.h"
#include "debuggerconstants.h"
#include <QCoreApplication>
#include <QProcess> // makes kill visible on Windows.
#include <QFile>
#include <QDir>
using namespace Debugger::Internal;
static inline QString msgCannotInterrupt(int pid, const QString &why)
{
return QString::fromLatin1("Cannot interrupt process %1: %2").arg(pid).arg(why);
}
#if defined(Q_OS_WIN)
#define _WIN32_WINNT 0x0501 /* WinXP, needed for DebugBreakProcess() */
#include <utils/winutils.h>
#include <windows.h>
#if !defined(PROCESS_SUSPEND_RESUME) // Check flag for MinGW
# define PROCESS_SUSPEND_RESUME (0x0800)
#endif // PROCESS_SUSPEND_RESUME
static BOOL isWow64Process(HANDLE hproc)
{
typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS) (HANDLE, PBOOL);
BOOL ret = false;
static LPFN_ISWOW64PROCESS fnIsWow64Process = NULL;
if (!fnIsWow64Process) {
if (HMODULE hModule = GetModuleHandle(L"kernel32.dll"))
fnIsWow64Process = reinterpret_cast<LPFN_ISWOW64PROCESS>(GetProcAddress(hModule, "IsWow64Process"));
}
if (!fnIsWow64Process) {
qWarning("Cannot retrieve symbol 'IsWow64Process'.");
return false;
}
if (!fnIsWow64Process(hproc, &ret)) {
qWarning("IsWow64Process() failed for %p: %s",
hproc, qPrintable(Utils::winErrorMessage(GetLastError())));
return false;
}
return ret;
}
// Open the process and break into it
bool Debugger::Internal::interruptProcess(int pID, int engineType, QString *errorMessage)
{
bool ok = false;
HANDLE inferior = NULL;
do {
const DWORD rights = PROCESS_QUERY_INFORMATION|PROCESS_SET_INFORMATION
|PROCESS_VM_OPERATION|PROCESS_VM_WRITE|PROCESS_VM_READ
|PROCESS_DUP_HANDLE|PROCESS_TERMINATE|PROCESS_CREATE_THREAD|PROCESS_SUSPEND_RESUME;
inferior = OpenProcess(rights, FALSE, pID);
if (inferior == NULL) {
*errorMessage = QString::fromLatin1("Cannot open process %1: %2").
arg(pID).arg(Utils::winErrorMessage(GetLastError()));
break;
}
// Try DebugBreakProcess if either Qt Creator is compiled 64 bit or
// both Qt Creator and application are 32 bit.
#ifdef Q_OS_WIN64
// Qt-Creator compiled 64 bit
// Windows must be 64 bit
// CDB 64 bit: use DebugBreakProcess for 32 an 64 bit processes.
// CDB 32 bit: untested
// GDB: not supported
const bool useDebugBreakApi= true;
#else
// Qt-Creator compiled 32 bit:
bool useDebugBreakApi;
if (isWow64Process(GetCurrentProcess())) {
// Windows is 64 bit
if (engineType == CdbEngineType) {
// CDB 64 bit: If Qt-Creator is a WOW64 process (meaning a 32bit process
// running in emulation), always use win64interrupt.exe for native
// 64 bit processes and WOW64 processes. While DebugBreakProcess()
// works in theory for other WOW64 processes, the break appears
// as a WOW64 breakpoint, which CDB is configured to ignore since
// it also triggers on module loading.
// CDB 32 bit: untested
useDebugBreakApi = false;
} else {
// GDB: Use win64interrupt for native 64bit processes only (it fails
// for WOW64 processes.
useDebugBreakApi = isWow64Process(inferior);
}
} else {
// Windows is 32 bit
// All processes are 32 bit, so DebugBreakProcess can be used in all cases.
useDebugBreakApi = true;
}
#endif
if (useDebugBreakApi) {
ok = DebugBreakProcess(inferior);
if (!ok)
*errorMessage = QLatin1String("DebugBreakProcess failed: ") + Utils::winErrorMessage(GetLastError());
} else {
const QString executable = QCoreApplication::applicationDirPath() + QLatin1String("/win64interrupt.exe");
switch (QProcess::execute(executable, QStringList(QString::number(pID)))) {
case -2:
*errorMessage = QString::fromLatin1("Cannot start %1. Check src\\tools\\win64interrupt\\win64interrupt.c for more information.").
arg(QDir::toNativeSeparators(executable));
break;
case 0:
ok = true;
break;
default:
*errorMessage = QDir::toNativeSeparators(executable)
+ QLatin1String(" could not break the process.");
break;
}
break;
}
} while (false);
if (inferior != NULL)
CloseHandle(inferior);
if (!ok)
*errorMessage = msgCannotInterrupt(pID, *errorMessage);
return ok;
}
#else // Q_OS_WIN
#include <sys/types.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
bool Debugger::Internal::interruptProcess(int pID, int /* engineType */,
QString *errorMessage)
{
if (pID <= 0) {
*errorMessage = msgCannotInterrupt(pID, QString::fromLatin1("Invalid process id."));
return false;
}
if (kill(pID, SIGINT)) {
*errorMessage = msgCannotInterrupt(pID, QString::fromLocal8Bit(strerror(errno)));
return false;
}
return true;
}
#endif // !Q_OS_WIN
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