You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
263 lines
8.7 KiB
263 lines
8.7 KiB
/*****************************************************************
|
|
* drkonqi - The KDE Crash Handler
|
|
*
|
|
* Copyright (C) 2000-2003 Hans Petter Bieker <bieker@kde.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*****************************************************************/
|
|
|
|
#include <tqfile.h>
|
|
#include <tqregexp.h>
|
|
|
|
#include <kprocess.h>
|
|
#include <kdebug.h>
|
|
#include <kstandarddirs.h>
|
|
#include <tdemessagebox.h>
|
|
#include <tdelocale.h>
|
|
#include <tdetempfile.h>
|
|
#include <tdehardwaredevices.h>
|
|
|
|
#include "krashconf.h"
|
|
#include "backtrace.h"
|
|
#include "backtrace.moc"
|
|
|
|
BackTrace::BackTrace(const KrashConfig *krashconf, TQObject *parent,
|
|
const char *name)
|
|
: TQObject(parent, name),
|
|
m_krashconf(krashconf), m_temp(NULL), m_temp_cmd(NULL)
|
|
{
|
|
m_proc = new TDEProcess;
|
|
}
|
|
|
|
BackTrace::~BackTrace()
|
|
{
|
|
pid_t pid = m_proc ? m_proc->pid() : 0;
|
|
// we don't want the gdb process to hang around
|
|
delete m_proc; // this will kill gdb (SIGKILL, signal 9)
|
|
|
|
// continue the process we ran backtrace on. Gdb sends SIGSTOP to the
|
|
// process. For some reason it doesn't work if we send the signal before
|
|
// gdb has exited, so we better wait for it.
|
|
// Do not touch it if we never ran backtrace.
|
|
if (pid)
|
|
{
|
|
waitpid(pid, NULL, 0);
|
|
kill(m_krashconf->pid(), SIGCONT);
|
|
}
|
|
|
|
delete m_temp;
|
|
delete m_temp_cmd;
|
|
}
|
|
|
|
void BackTrace::start()
|
|
{
|
|
TQString exec = m_krashconf->tryExec();
|
|
if ( !exec.isEmpty() && TDEStandardDirs::findExe(exec).isEmpty() )
|
|
{
|
|
TQObject * o = parent();
|
|
|
|
if (o && !o->inherits(TQWIDGET_OBJECT_NAME_STRING))
|
|
{
|
|
o = NULL;
|
|
}
|
|
|
|
KMessageBox::error(
|
|
(TQWidget *)o,
|
|
i18n("Could not generate a backtrace as the debugger '%1' was not found.").arg(exec));
|
|
return;
|
|
}
|
|
m_temp = new KTempFile;
|
|
m_temp->setAutoDelete(TRUE);
|
|
int handle = m_temp->handle();
|
|
TQString backtraceCommand = m_krashconf->backtraceCommand();
|
|
const char* bt = backtraceCommand.latin1();
|
|
::write(handle, bt, strlen(bt)); // the command for a backtrace
|
|
::write(handle, "\n", 1);
|
|
::fsync(handle);
|
|
|
|
// build the debugger command
|
|
TQString str = m_krashconf->debuggerBatch();
|
|
m_krashconf->expandString(str, true, m_temp->name());
|
|
|
|
// write the debugger command
|
|
m_temp_cmd = new KTempFile(TQString::null, TQString::null, 0700);
|
|
m_temp_cmd->setAutoDelete(TRUE);
|
|
handle = m_temp_cmd->handle();
|
|
const char* dbgcommand = str.latin1();
|
|
::write(handle, dbgcommand, strlen(dbgcommand)); // the command to execute the debugger
|
|
::write(handle, "\n", 1);
|
|
::fsync(handle);
|
|
m_temp_cmd->close();
|
|
|
|
// determine if yama has been used to prevent ptrace as normal user
|
|
bool need_root_access = false;
|
|
TQFile yamactl("/proc/sys/kernel/yama/ptrace_scope");
|
|
if (yamactl.exists()) {
|
|
if (yamactl.open(IO_ReadOnly)) {
|
|
TQTextStream stream(&yamactl);
|
|
TQString line;
|
|
line = stream.readLine();
|
|
if (line.toInt() != 0) {
|
|
need_root_access = true;
|
|
}
|
|
yamactl.close();
|
|
}
|
|
}
|
|
|
|
// start the debugger
|
|
m_proc = new TDEProcess;
|
|
m_proc->setUseShell(true);
|
|
|
|
if (need_root_access == false) {
|
|
*m_proc << m_temp_cmd->name();
|
|
}
|
|
else {
|
|
*m_proc << "tdesu -t --comment \"" << i18n("Administrative access is required to generate a backtrace") << "\" -c \"" << m_temp_cmd->name() << "\"";
|
|
}
|
|
|
|
connect(m_proc, TQT_SIGNAL(receivedStdout(TDEProcess*, char*, int)),
|
|
TQT_SLOT(slotReadInput(TDEProcess*, char*, int)));
|
|
connect(m_proc, TQT_SIGNAL(processExited(TDEProcess*)),
|
|
TQT_SLOT(slotProcessExited(TDEProcess*)));
|
|
|
|
m_proc->start ( TDEProcess::NotifyOnExit, TDEProcess::All );
|
|
}
|
|
|
|
void BackTrace::slotReadInput(TDEProcess *, char* buf, int buflen)
|
|
{
|
|
TQString newstr = TQString::fromLocal8Bit(buf, buflen);
|
|
newstr.replace("\n\n", "\n");
|
|
if (m_strBt.isEmpty()) {
|
|
if (newstr == "\n") {
|
|
newstr = "";
|
|
}
|
|
}
|
|
if (!newstr.startsWith(": ")) {
|
|
m_strBt.append(newstr);
|
|
emit append(newstr);
|
|
}
|
|
}
|
|
|
|
void BackTrace::slotProcessExited(TDEProcess *proc)
|
|
{
|
|
// start it again
|
|
kill(m_krashconf->pid(), SIGCONT);
|
|
|
|
if (proc->normalExit() && (proc->exitStatus() == 0) &&
|
|
usefulBacktrace())
|
|
{
|
|
processBacktrace();
|
|
emit done(m_strBt);
|
|
}
|
|
else
|
|
emit someError();
|
|
}
|
|
|
|
// analyze backtrace for usefulness
|
|
bool BackTrace::usefulBacktrace()
|
|
{
|
|
// remove crap
|
|
if( !m_krashconf->removeFromBacktraceRegExp().isEmpty())
|
|
m_strBt.replace(TQRegExp( m_krashconf->removeFromBacktraceRegExp()), TQString());
|
|
|
|
if( m_krashconf->disableChecks())
|
|
return true;
|
|
// prepend and append newline, so that regexps like '\nwhatever\n' work on all lines
|
|
TQString strBt = '\n' + m_strBt + '\n';
|
|
// how many " ?? " in the bt ?
|
|
int unknown = 0;
|
|
if( !m_krashconf->invalidStackFrameRegExp().isEmpty())
|
|
unknown = strBt.contains( TQRegExp( m_krashconf->invalidStackFrameRegExp()));
|
|
// how many stack frames in the bt ?
|
|
int frames = 0;
|
|
if( !m_krashconf->frameRegExp().isEmpty())
|
|
frames = strBt.contains( TQRegExp( m_krashconf->frameRegExp()));
|
|
else
|
|
frames = strBt.contains('\n');
|
|
bool tooShort = false;
|
|
if( !m_krashconf->neededInValidBacktraceRegExp().isEmpty())
|
|
tooShort = ( strBt.find( TQRegExp( m_krashconf->neededInValidBacktraceRegExp())) == -1 );
|
|
return !m_strBt.isNull() && !tooShort && (unknown < frames);
|
|
}
|
|
|
|
// remove stack frames added because of TDECrash
|
|
void BackTrace::processBacktrace()
|
|
{
|
|
if( !m_krashconf->kcrashRegExp().isEmpty()) {
|
|
TQRegExp kcrashregexp( m_krashconf->kcrashRegExp());
|
|
int pos = -1;
|
|
while ((pos = kcrashregexp.search( m_strBt )) >= 0) {
|
|
pos = kcrashregexp.search( m_strBt );
|
|
if( pos >= 0 ) {
|
|
int len = kcrashregexp.matchedLength();
|
|
int nextinfochunkpos = m_strBt.find("====", pos);
|
|
if (nextinfochunkpos >= 0) {
|
|
// Trying to delete too much!
|
|
int chunkpos = pos;
|
|
TQString limitedstrBt = m_strBt.mid(pos, nextinfochunkpos - pos);
|
|
pos = kcrashregexp.search( limitedstrBt ) + chunkpos;
|
|
len = kcrashregexp.matchedLength();
|
|
}
|
|
if (pos >= 0) {
|
|
if( m_strBt[ pos ] == '\n' ) {
|
|
++pos;
|
|
--len;
|
|
}
|
|
m_strBt.remove( pos, len );
|
|
m_strBt.insert( pos, TQString::fromLatin1( "[TDECrash handler]\n" ));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if( !m_krashconf->kcrashRegExpSingle().isEmpty()) {
|
|
TQRegExp kcrashregexp( m_krashconf->kcrashRegExpSingle());
|
|
int pos = kcrashregexp.search( m_strBt );
|
|
if( pos >= 0 ) {
|
|
int len = kcrashregexp.matchedLength();
|
|
if( m_strBt[ pos ] == '\n' ) {
|
|
++pos;
|
|
--len;
|
|
}
|
|
m_strBt.remove( pos, len );
|
|
}
|
|
}
|
|
|
|
// Append potentially important hardware information
|
|
m_strBt.append("\n\n==== (tdehwlib) hardware information ====\n");
|
|
TDEHardwareDevices *hwdevices = TDEGlobal::hardwareDevices();
|
|
TDEGenericHardwareList hwlist = hwdevices->listAllPhysicalDevices();
|
|
TDEGenericDevice *hwdevice;
|
|
for ( hwdevice = hwlist.first(); hwdevice; hwdevice = hwlist.next() ) {
|
|
if (hwdevice->type() == TDEGenericDeviceType::CPU) {
|
|
TDECPUDevice* cpudevice = static_cast<TDECPUDevice*>(hwdevice);
|
|
m_strBt.append(TQString("CPU core number:\t\t%1\n").arg(cpudevice->coreNumber()));
|
|
m_strBt.append(TQString("\tVendor:\t\t\t%1\n").arg(cpudevice->vendorName()));
|
|
m_strBt.append(TQString("\tModel:\t\t\t%1\n").arg(cpudevice->vendorModel()));
|
|
m_strBt.append(TQString("\tName:\t\t\t%1\n").arg(cpudevice->name()));
|
|
m_strBt.append(TQString("\tCurrent Frequency:\t%1 MHz\n").arg(cpudevice->frequency()));
|
|
m_strBt.append(TQString("\tMinimum Frequency:\t%1 MHz\n").arg(cpudevice->minFrequency()));
|
|
m_strBt.append(TQString("\tMaximum Frequency:\t%1 MHz\n").arg(cpudevice->maxFrequency()));
|
|
m_strBt.append("\n");
|
|
}
|
|
}
|
|
}
|