Source code of Windows XP (NT5)
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/****************************************************************************
Copyright (c) 2000 Microsoft Corporation
Module Name:
dumprep.cpp
Abstract:
hang manager intermediate app
*** IMPORTANT NOTE: this links with the single threaded CRT static lib. If
it is changed to be multithreaded for some odd reason,
then the sources file must be modified to link to
libcmt.lib.
Revision History:
DerekM created 08/16/00
****************************************************************************/
#include "stdafx.h"
#include "malloc.h"
#include "faultrep.h"
#include "pfrcfg.h"
enum EOp
{
eopNone = 0,
eopHang,
eopDump,
eopEvent
};
enum ECheckType
{
ctNone = -1,
ctKernel = 0,
ctUser,
ctShutdown,
ctNumChecks
};
struct SCheckData
{
LPCWSTR wszRegPath;
LPCWSTR wszRunVal;
LPCWSTR wszEventName;
LPCSTR szFnName;
BOOL fUseData;
BOOL fDelDump;
};
//////////////////////////////////////////////////////////////////////////////
// constants
const char c_szKSFnName[] = "ReportEREventDW";
const char c_szUserFnName[] = "ReportFaultFromQueue";
SCheckData g_scd[ctNumChecks] =
{
{ c_wszRKKrnl, c_wszRVKFC, c_wszMutKrnlName, c_szKSFnName, FALSE, FALSE },
{ c_wszRKUser, c_wszRVUFC, c_wszMutUserName, c_szUserFnName, TRUE, TRUE },
{ c_wszRKShut, c_wszRVSEC, c_wszMutShutName, c_szKSFnName, FALSE, FALSE },
};
#define EV_ACCESS_ALL GENERIC_ALL | STANDARD_RIGHTS_ALL
#define EV_ACCESS_RS GENERIC_READ | SYNCHRONIZE
#define pfn_VALONLY pfn_REPORTEREVENTDW
#define pfn_VALDATA pfn_REPORTFAULTFROMQ
//////////////////////////////////////////////////////////////////////////////
// globals
BOOL g_fDeleteReg = TRUE;
//////////////////////////////////////////////////////////////////////////////
// misc
// **************************************************************************
LONG __stdcall ExceptionTrap(_EXCEPTION_POINTERS *ExceptionInfo)
{
return EXCEPTION_EXECUTE_HANDLER;
}
#ifdef MANIFEST_HEAP
BOOL
DeleteFullAndTriageMiniDumps(
LPCWSTR wszPath
)
//
// We create a FullMinidump file along with triage minidump in the same dir
// This routine cleans up both those files
//
{
LPWSTR wszFullMinidump = NULL;
DWORD cch;
BOOL fRet;
fRet = DeleteFileW(wszPath);
cch = wcslen(wszPath) + sizeofSTRW(c_wszHeapDumpSuffix);
__try { wszFullMinidump = (WCHAR *)_alloca(cch * sizeof(WCHAR)); }
__except(EXCEPTION_STACK_OVERFLOW) { wszFullMinidump = NULL; }
if (wszFullMinidump)
{
LPWSTR wszFileExt = NULL;
// Build Dump-with-heap path
wcsncpy(wszFullMinidump, wszPath, cch);
wszFileExt = wszFullMinidump + wcslen(wszFullMinidump) - sizeofSTRW(c_wszDumpSuffix) + 1;
if (!wcscmp(wszFileExt, c_wszDumpSuffix))
{
*wszFileExt = L'\0';
}
wcsncat(wszFullMinidump, c_wszHeapDumpSuffix, cch);
fRet = DeleteFileW(wszFullMinidump);
} else
{
fRet = FALSE;
}
return fRet;
}
#endif // MANIFEST_HEAP
// **************************************************************************
void DeleteQueuedEvents(HKEY hkey, LPWSTR wszVal, DWORD cchMaxVal,
ECheckType ct)
{
DWORD cchVal, dw;
HKEY hkeyRun = NULL;
HRESULT hr = NOERROR;
USE_TRACING("DeleteQueuedEvents");
VALIDATEPARM(hr, (hkey == NULL || wszVal == NULL));
if (FAILED(hr))
{
SetLastError(ERROR_INVALID_PARAMETER);
goto done;
}
for(;;)
{
cchVal = cchMaxVal;
dw = RegEnumValueW(hkey, 0, wszVal, &cchVal, NULL, NULL,
NULL, NULL);
if (dw != ERROR_SUCCESS && dw != ERROR_NO_MORE_ITEMS)
{
SetLastError(dw);
goto done;
}
if (dw == ERROR_NO_MORE_ITEMS)
break;
RegDeleteValueW(hkey, wszVal);
if (ct == ctUser)
{
#ifdef MANIFEST_HEAP
DeleteFullAndTriageMiniDumps(wszVal);
#else
DeleteFileW(wszVal);
#endif // !MANIFEST_HEAP
}
}
// gotta delete our value out of the Run key so we don't run
// unnecessarily again...
dw = RegOpenKeyExW(HKEY_LOCAL_MACHINE, c_wszRKRun, 0,
KEY_ALL_ACCESS, &hkeyRun);
if (dw != ERROR_SUCCESS)
goto done;
RegDeleteValueW(hkeyRun, g_scd[ct].wszRunVal);
done:
if (hkeyRun != NULL)
RegCloseKey(hkeyRun);
return;
}
// **************************************************************************
void ReportEvents(HMODULE hmod, ECheckType ct)
{
EFaultRepRetVal frrv;
pfn_VALONLY pfnVO = NULL;
pfn_VALDATA pfnVD = NULL;
EEventType eet = eetKernelFault;
HRESULT hr = NOERROR;
HANDLE hmut = NULL;
LPWSTR wszVal = NULL;
LPBYTE pbData = NULL, pbDataToUse = NULL;
EEnDis eedReport, eedUI;
DWORD cchVal = 0, cchMaxVal = 0, cbMaxData = 0, cVals = 0;
DWORD dw, cbData = 0, *pcbData = NULL;
DWORD dwType;
HKEY hkey = NULL;
USE_TRACING("ReportEvents");
VALIDATEPARM(hr, ((ct <= ctNone && ct >= ctNumChecks) || hmod == NULL));
if (FAILED(hr))
return;
// assume hmod is valid cuz we do a check in wWinMain to make sure it is
// before calling this fn
if (g_scd[ct].fUseData)
pfnVD = (pfn_VALDATA)GetProcAddress(hmod, g_scd[ct].szFnName);
else
pfnVO = (pfn_VALONLY)GetProcAddress(hmod, g_scd[ct].szFnName);
if (pfnVD == NULL && pfnVO == NULL)
return;
dw = RegOpenKeyExW(HKEY_LOCAL_MACHINE, c_wszRPCfg, 0, KEY_READ, &hkey);
if (dw != ERROR_SUCCESS)
return;
cbData = sizeof(eedUI);
dw = RegQueryValueExW(hkey, c_wszRVShowUI, 0, NULL, (PBYTE)&eedUI,
&cbData);
if (dw != ERROR_SUCCESS)
{
RegCloseKey(hkey);
return;
}
cbData = sizeof(eedReport);
dw = RegQueryValueExW(hkey, c_wszRVDoReport, 0, NULL, (PBYTE)&eedReport,
&cbData);
RegCloseKey(hkey);
hkey = NULL;
if (dw != ERROR_SUCCESS)
return;
if (eedUI != eedEnabled && eedUI != eedDisabled &&
eedUI != eedEnabledNoCheck)
eedUI = eedEnabled;
if (eedReport != eedEnabled && eedReport != eedDisabled)
eedReport = eedEnabled;
// only want one user at a time going thru this
hmut = OpenMutexW(SYNCHRONIZE, FALSE, g_scd[ct].wszEventName);
VALIDATEPARM(hr, (hmut == NULL));
if (FAILED(hr))
return;
// the default value above is eetKernelFault, so only need to change if
// it's a shutdown
if (ct == ctShutdown)
eet = eetShutdown;
__try
{
__try
{
// give this wait five minutes. If the code doesn't complete by
// then, then we're either held up by DW (which means an admin
// aleady passed thru here) or something has barfed and is holding
// the mutex.
dw = WaitForSingleObject(hmut, 300000);
if (dw != WAIT_OBJECT_0 && dw != WAIT_ABANDONED)
__leave;
dw = RegOpenKeyExW(HKEY_LOCAL_MACHINE, g_scd[ct].wszRegPath, 0,
KEY_ALL_ACCESS, &hkey);
if (dw != ERROR_SUCCESS)
__leave;
// determine how big the valuename is & allocate a buffer for it
dw = RegQueryInfoKeyW(hkey, NULL, NULL, NULL, NULL, NULL, NULL,
&cVals, &cchMaxVal, &cbMaxData, NULL, NULL);
if (dw != ERROR_SUCCESS || cVals == 0 || cchMaxVal == 0)
__leave;
cchMaxVal++;
// get us some buffers to hold the data bits we're interested in...
wszVal = (LPWSTR)MyAlloc(cchMaxVal * sizeof(WCHAR));
if (wszVal == NULL)
__leave;
// if we're completely disabled, then nuke all the queued stuff
// and bail
if (eedUI == eedDisabled && eedReport == eedDisabled)
{
DeleteQueuedEvents(hkey, wszVal, cchMaxVal, ct);
__leave;
}
if (g_scd[ct].fUseData)
{
pbData = (LPBYTE) MyAlloc(cbMaxData);
if (pbData == NULL)
__leave;
pbDataToUse = pbData;
pcbData = &cbData;
}
do
{
cchVal = cchMaxVal;
cbData = cbMaxData;
dw = RegEnumValueW(hkey, 0, wszVal, &cchVal, NULL, &dwType,
pbDataToUse, pcbData);
if (dw != ERROR_SUCCESS && dw != ERROR_NO_MORE_ITEMS)
__leave;
if (dw == ERROR_NO_MORE_ITEMS)
break;
if (g_scd[ct].fUseData)
{
// if the type isn't REG_BINARY, then someone wrote an
// invalid blob to the registry. We have to ignore it.
if (dwType == REG_BINARY)
frrv = (*pfnVD)(wszVal, pbData, cbData);
else
{
SetLastError(ERROR_INVALID_PARAMETER);
frrv = frrvOk;
}
}
else
{
frrv = (*pfnVO)(eet, wszVal, NULL);
}
// if the call succeeds (or the data we fed to it was invalid)
// then nuke the reg key & dump file
if (GetLastError() == ERROR_INVALID_PARAMETER ||
(g_fDeleteReg && frrv == frrvOk))
{
dw = RegDeleteValueW(hkey, wszVal);
if (dw != ERROR_SUCCESS && dw != ERROR_FILE_NOT_FOUND &&
dw != ERROR_PATH_NOT_FOUND)
__leave;
if (g_scd[ct].fDelDump && g_fDeleteReg)
{
#ifdef MANIFEST_HEAP
DeleteFullAndTriageMiniDumps(wszVal);
#else
DeleteFileW(wszVal);
#endif // !MANIFEST_HEAP
}
}
else
{
// don't delete the Run key if we got an error and didn't
// delete the fault key
if (frrv != frrvOk)
__leave;
}
}
while(1);
RegCloseKey(hkey);
hkey = NULL;
// gotta delete our value out of the Run key so we don't run
// unnecessarily again...
dw = RegOpenKeyExW(HKEY_LOCAL_MACHINE, c_wszRKRun, 0,
KEY_ALL_ACCESS, &hkey);
if (dw != ERROR_SUCCESS)
__leave;
RegDeleteValueW(hkey, g_scd[ct].wszRunVal);
}
__finally
{
}
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
}
if (hmut != NULL)
{
ReleaseMutex(hmut);
CloseHandle(hmut);
}
if (hkey != NULL)
RegCloseKey(hkey);
if (pbData != NULL)
MyFree(pbData);
if (wszVal != NULL)
MyFree(wszVal);
}
//////////////////////////////////////////////////////////////////////////////
// wmain
// **************************************************************************
int __cdecl wmain(int argc, WCHAR **argv)
{
EFaultRepRetVal frrv = frrvErrNoDW;
SMDumpOptions smdo, *psmdo = &smdo;
ECheckType ct = ctNone;
HMODULE hmod = NULL;
HANDLE hevNotify = NULL, hproc = NULL, hmem = NULL;
LPWSTR wszDump = NULL;
WCHAR wszMod[MAX_PATH];
DWORD dwpid, dwtid;
BOOL f64bit = FALSE;
int i;
EOp eop = eopNone;
HRESULT hr = NOERROR;
// we don't want to have any faults get trapped anywhere.
SetErrorMode(SEM_NOGPFAULTERRORBOX | SEM_NOALIGNMENTFAULTEXCEPT |
SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
SetUnhandledExceptionFilter(ExceptionTrap);
INIT_TRACING
USE_TRACING("DumpRep.wmain");
VALIDATEPARM(hr, (argc < 2 || argc > 8));
if (FAILED(hr))
goto done;
dwpid = _wtol(argv[1]);
ZeroMemory(&smdo, sizeof(smdo));
for (i = 2; i < argc; i++)
{
if (argv[i][0] != L'-')
continue;
switch(argv[i][1])
{
// debug flag to prevent deletion of reg entries
case L'E':
case L'e':
#if defined(NO_WAY_DEBUG) || defined(NO_WAY__DEBUG)
g_fDeleteReg = FALSE;
#endif
break;
// user or kernel faults or shutdowns
case L'K':
case L'k':
case L'U':
case L'u':
case L'S':
case L's':
if (eop != eopNone)
goto done;
eop = eopEvent;
// to workaround the desktop hanging while all Run processes
// do their thing, we spawn a another copy of ourselves and
// immediately exit.
if (argv[i][2] != L'G' && argv[i][2] != L'g')
{
PROCESS_INFORMATION pi;
STARTUPINFOW si;
GetModuleFileNameW(NULL, wszMod, sizeofSTRW(wszMod));
if (argv[i][1] == L'K' || argv[i][1] == L'k')
wcscat(wszMod, L" 0 -KG");
else if (argv[i][1] == L'U' || argv[i][1] == L'u')
wcscat(wszMod, L" 0 -UG");
else
wcscat(wszMod, L" 0 -SG");
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
if (CreateProcessW(NULL, wszMod, NULL, NULL, FALSE, 0, NULL,
NULL, &si, &pi))
{
CloseHandle(pi.hThread);
CloseHandle(pi.hProcess);
}
goto done;
}
else
{
if (argv[i][1] == L'K' || argv[i][1] == L'k')
ct = ctKernel;
else if (argv[i][1] == L'U' || argv[i][1] == L'u')
ct = ctUser;
else
ct = ctShutdown;
}
break;
// hangs
case L'H':
case L'h':
if (i + 1 >= argc || eop != eopNone)
goto done;
eop = eopHang;
#ifdef _WIN64
if (argv[i][2] == L'6')
f64bit = TRUE;
#endif
dwtid = _wtol(argv[++i]);
if (argc > i + 1)
{
hevNotify = OpenEventW(EVENT_MODIFY_STATE | SYNCHRONIZE,
FALSE, argv[++i]);
}
break;
// dumps
case L'D':
case L'd':
if (i + 3 >= argc || wszDump != NULL || eop != eopNone)
goto done;
eop = eopDump;
ZeroMemory(&smdo, sizeof(smdo));
smdo.ulMod = _wtol(argv[++i]);
smdo.ulThread = _wtol(argv[++i]);
wszDump = argv[++i];
if (argv[i - 3][2] == L'T' || argv[i - 3][2] == L't')
{
if (i + 1 >= argc)
goto done;
smdo.dwThreadID = _wtol(argv[++i]);
smdo.dfOptions = dfFilterThread;
}
else if (argv[i - 3][2] == L'S' || argv[i - 3][2] == L's')
{
if (i + 2 >= argc)
goto done;
smdo.dwThreadID = _wtol(argv[++i]);
smdo.ulThreadEx = _wtol(argv[++i]);
smdo.dfOptions = dfFilterThreadEx;
}
else if (argv[i - 3][2] == L'M' || argv[i - 3][2] == L'm')
{
HANDLE hmemRemote = NULL;
LPVOID pvMem = NULL;
if (i + 1 >= argc)
goto done;
hproc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwpid);
if (hproc == NULL)
goto done;
#ifdef _WIN64
hmemRemote = (HANDLE)_wtoi64(argv[++i]);
#else
hmemRemote = (HANDLE)_wtol(argv[++i]);
#endif
VALIDATEPARM(hr, (hmemRemote == NULL));
if (FAILED(hr))
goto done;
if (DuplicateHandle(hproc, hmemRemote, GetCurrentProcess(),
&hmem, 0, FALSE,
DUPLICATE_SAME_ACCESS) == FALSE)
goto done;
pvMem = MapViewOfFile(hmem, FILE_MAP_WRITE | FILE_MAP_WRITE,
0, 0, 0);
if (pvMem == NULL)
goto done;
psmdo = (SMDumpOptions *)pvMem;
}
break;
default:
goto done;
}
}
// if we didn't get an operation, no point in doing anything else...
if (eop == eopNone)
goto done;
GetSystemDirectoryW(wszMod, sizeofSTRW(wszMod));
wcscat(wszMod, L"\\faultrep.dll");
hmod = LoadLibraryExW(wszMod, NULL, 0);
VALIDATEPARM(hr, (hmod == NULL));
if (FAILED(hr))
goto done;
switch(eop)
{
// user or kernel faults:
case eopEvent:
ReportEvents(hmod, ct);
break;
// dumps
case eopDump:
{
pfn_CREATEMINIDUMPW pfnCM;
VALIDATEPARM(hr,(wszDump == NULL));
if (FAILED(hr))
goto done;
pfnCM = (pfn_CREATEMINIDUMPW)GetProcAddress(hmod,
"CreateMinidumpW");
VALIDATEPARM(hr, (pfnCM == NULL));
if (SUCCEEDED(hr))
frrv = (*pfnCM)(dwpid, wszDump, psmdo) ? frrvOk : frrvErr;
break;
}
// hangs
case eopHang:
{
pfn_REPORTHANG pfnRH;
pfnRH = (pfn_REPORTHANG)GetProcAddress(hmod, "ReportHang");
VALIDATEPARM(hr, (pfnRH == NULL));
if (SUCCEEDED(hr))
frrv = (*pfnRH)(dwpid, dwtid, f64bit, hevNotify);
break;
}
// err, shouldn't get here
default:
break;
}
done:
if (hmod != NULL)
FreeLibrary(hmod);
if (hproc != NULL)
CloseHandle(hproc);
if (hmem != NULL)
CloseHandle(hmem);
if (hevNotify != NULL)
CloseHandle(hevNotify);
if (psmdo != NULL && psmdo != &smdo)
UnmapViewOfFile((LPVOID)psmdo);
TERM_TRACING;
return frrv;
}