void PrintBacktrace(void) {
int err;
QCrashReportRef crRef = NULL;
char nameBuf[256], pathToThisProcess[1024];
const NXArchInfo *localArch;
char OSMinorVersion = '?';
time_t t;
char atosPipeBuf[1024], cppfiltPipeBuf[1024];
char outBuf[1024], offsetBuf[32];
char *sourceSymbol, *symbolEnd;
char **symbols = NULL;
void *callstack[CALL_STACK_SIZE];
int frames, i;
void *systemlib = NULL;
FILE *atosPipe = NULL;
FILE *cppfiltPipe = NULL;
backtraceProc myBacktraceProc = NULL;
backtrace_symbolsProc myBacktrace_symbolsProc = NULL;
char saved_env[128], *env = NULL;
bool atosExists = false, cppfiltExists = false;
#if 0
// To debug backtrace logic:
// * Enable this block of code.
// * Set a breakpoint at sleep(1) call, and wherever else you wish.
// * Launch built development application from Finder.
// * Get this application's pid from Activity Monitor.
// * Attach Debugger to this application.
// * Continue until you reach this breakpoint.
// * Change wait variable to 0 (false).
// This is necessary because GDB intercepts signals even if you tell it
// not to, so you must attach GDB after the signal handler is invoked.
bool wait = true;
while (wait) {
fprintf(stderr, "waiting\n");
sleep(1);
}
#endif
GetNameOfAndPathToThisProcess(nameBuf, sizeof(nameBuf), pathToThisProcess, sizeof(pathToThisProcess));
if (nameBuf[0]) {
fprintf(stderr, "\nCrashed executable name: %s\n", nameBuf);
}
#ifdef BOINC_VERSION_STRING
fprintf(stderr, "built using BOINC library version %s\n", BOINC_VERSION_STRING);
#endif
localArch = NXGetLocalArchInfo();
fprintf(stderr, "Machine type %s", localArch->description);
#ifdef __LP64__
fprintf(stderr, " (64-bit executable)\n");
#else
fprintf(stderr, " (32-bit executable)\n");
#endif
PrintOSVersion(&OSMinorVersion);
time(&t);
fputs(asctime(localtime(&t)), stderr);
fputc('\n', stderr);
err = QCRCreateFromSelf(&crRef);
if (OSMinorVersion == '5') {
#ifdef __ppc__
fputs("BOINC backtrace under OS 10.5.x only shows exported (global) symbols\n", stderr);
fputs("and may work poorly on a PowerPC Mac after a crash. For a better\n", stderr);
fputs("backtrace, run under OS 10.4.x.\n\n", stderr);
#else
fputs("BOINC backtrace under OS 10.5.x only shows exported (global) symbols\n", stderr);
fputs("and may not show the final location which caused a crash. For a better\n", stderr);
fputs("backtrace, either run under OS 10.4.x or run under OS 10.6.x or later.\n\n", stderr);
#endif
}
if (OSMinorVersion >= '5') {
// Use new backtrace functions if available (only in OS 10.5 and later)
systemlib = dlopen ("/usr/lib/libSystem.dylib", RTLD_NOW );
if (systemlib) {
myBacktraceProc = (backtraceProc)dlsym(systemlib, "backtrace");
}
if (! myBacktraceProc) {
goto skipBackTrace; // Should never happen
}
frames = myBacktraceProc(callstack, CALL_STACK_SIZE);
myBacktrace_symbolsProc = (backtrace_symbolsProc)dlsym(systemlib, "backtrace_symbols");
if (myBacktrace_symbolsProc) {
symbols = myBacktrace_symbolsProc(callstack, frames);
} else {
goto skipBackTrace; // Should never happen
}
atosExists = boinc_file_exists("/usr/bin/atos");
cppfiltExists = boinc_file_exists("/usr/bin/atos");
if (atosExists || cppfiltExists) {
// The bidirectional popen only works if the NSUnbufferedIO environment
// variable is set, so we save and restore its current value.
env = getenv("NSUnbufferedIO");
if (env) {
strlcpy(saved_env, env, sizeof(saved_env));
}
setenv("NSUnbufferedIO", "YES", 1);
}
if (atosExists) {
// The backtrace_symbols() and backtrace_symbols() APIs are limited to
// external symbols only, so we also use the atos command-line utility
// which gives us debugging symbols when available.
//
// For some reason, using the -p option with the value from getpid()
// fails here but the -o option with a path does work.
#ifdef __x86_64__
snprintf(atosPipeBuf, sizeof(atosPipeBuf), "/usr/bin/atos -o \"%s\" -arch x86_64", pathToThisProcess);
#elif defined (__i386__)
snprintf(atosPipeBuf, sizeof(atosPipeBuf), "/usr/bin/atos -o \"%s\" -arch i386", pathToThisProcess);
#else
snprintf(atosPipeBuf, sizeof(atosPipeBuf), "/usr/bin/atos -o \"%s\" -arch ppc", pathToThisProcess);
#endif
atosPipe = popen(atosPipeBuf, "r+");
if (atosPipe) {
setbuf(atosPipe, 0);
}
}
if (cppfiltExists) {
cppfiltPipe = popen("/usr/bin/c++filt -s gnu-v3 -n", "r+");
if (cppfiltPipe) {
setbuf(cppfiltPipe, 0);
}
}
for (i=0; i<frames; i++) {
strlcpy(outBuf, symbols[i], sizeof(outBuf));
if (cppfiltPipe) {
sourceSymbol = strstr(outBuf, "0x");
if (sourceSymbol) {
sourceSymbol = strchr(sourceSymbol, (int)'_');
if (sourceSymbol) {
strlcpy(cppfiltPipeBuf, sourceSymbol, sizeof(cppfiltPipeBuf)-1);
*sourceSymbol = '\0';
symbolEnd = strchr(cppfiltPipeBuf, (int)' ');
if (symbolEnd) {
strlcpy(offsetBuf, symbolEnd, sizeof(offsetBuf));
*symbolEnd = '\0';
}
fprintf(cppfiltPipe, "%s\n", cppfiltPipeBuf);
BT_PersistentFGets(cppfiltPipeBuf, sizeof(cppfiltPipeBuf), cppfiltPipe);
symbolEnd = strchr(cppfiltPipeBuf, (int)'\n');
if (symbolEnd) {
*symbolEnd = '\0';
}
strlcat(outBuf, cppfiltPipeBuf, sizeof(outBuf));
strlcat(outBuf, offsetBuf, sizeof(outBuf));
}
}
}
if (atosPipe) {
fprintf(atosPipe, "%#llx\n", (QTMAddr)callstack[i]);
BT_PersistentFGets(atosPipeBuf, sizeof(atosPipeBuf), atosPipe);
sourceSymbol = strstr(atosPipeBuf, "0x");
if (!sourceSymbol) { // If atos returned a symbol (not just a hex value)
sourceSymbol = strstr(outBuf, "0x");
if (sourceSymbol) sourceSymbol = strstr(sourceSymbol, " ");
if (sourceSymbol) *++sourceSymbol = '\0'; // Remove questionable symbol from backtrace_symbols()
strlcat(outBuf, " ", sizeof(outBuf));
strlcat(outBuf, atosPipeBuf, sizeof(outBuf));
symbolEnd = strchr(outBuf, (int)'\n');
if (symbolEnd) {
*symbolEnd = '\0';
}
}
}
fprintf(stderr, "%s\n", outBuf);
}
if (atosPipe) {
pclose(atosPipe);
}
if (cppfiltPipe) {
pclose(cppfiltPipe);
}
if (atosExists || cppfiltExists) {
if (env) {
setenv("NSUnbufferedIO", saved_env, 1);
} else {
unsetenv("NSUnbufferedIO");
}
}
skipBackTrace:
fprintf(stderr, "\n");
} else {
// Not OS 10.5.x
QCRPrintBacktraces(crRef, stderr);
}
// make sure this much gets written to file in case future
// versions of OS break our crash dump code beyond this point.
fflush(stderr);
QCRPrintThreadState(crRef, stderr);
QCRPrintImages(crRef, stderr);
}
/*
* display shell version info internal command.
*/
INT cmd_ver (LPTSTR param)
{
INT i;
nErrorLevel = 0;
if (_tcsstr(param, _T("/?")) != NULL)
{
ConOutResPaging(TRUE,STRING_VERSION_HELP1);
return 0;
}
ConOutResPrintf(STRING_CMD_SHELLINFO, _T(KERNEL_RELEASE_STR), _T(KERNEL_VERSION_BUILD_STR));
ConOutChar(_T('\n'));
ConOutResPuts(STRING_VERSION_RUNNING_ON);
PrintOSVersion();
/* Basic copyright notice */
if (param[0] != _T('\0'))
{
ConOutPuts(_T("\n\n"));
ConOutPuts(_T("Copyright (C) 1994-1998 Tim Norman and others.\n"));
ConOutPuts(_T("Copyright (C) 1998-") _T(COPYRIGHT_YEAR) _T(" ReactOS Team\n"));
for (i = 0; param[i]; i++)
{
/* Skip spaces */
if (param[i] == _T(' '))
continue;
if (param[i] == _T('/'))
{
/* Is this a lone '/' ? */
if (param[i + 1] == 0)
{
error_invalid_switch(_T(' '));
return 1;
}
continue;
}
if (_totupper(param[i]) == _T('W'))
{
/* Warranty notice */
ConOutResPuts(STRING_VERSION_HELP3);
}
else if (_totupper(param[i]) == _T('R'))
{
/* Redistribution notice */
ConOutResPuts(STRING_VERSION_HELP4);
}
else if (_totupper(param[i]) == _T('C'))
{
/* Developer listing */
ConOutResPuts(STRING_VERSION_HELP6);
ConOutResPuts(STRING_FREEDOS_DEV);
ConOutResPuts(STRING_VERSION_HELP7);
ConOutResPuts(STRING_REACTOS_DEV);
}
else
{
error_invalid_switch(_totupper(param[i]));
return 1;
}
}
/* Bug report notice */
ConOutResPuts(STRING_VERSION_HELP5);
}
ConOutChar(_T('\n'));
return 0;
}
