VOID NTAPI PopShutdownSystem(IN POWER_ACTION SystemAction) { /* Note should notify caller of NtPowerInformation(PowerShutdownNotification) */ /* Unload symbols */ DPRINT("It's the final countdown...%lx\n", SystemAction); DbgUnLoadImageSymbols(NULL, (PVOID)-1, 0); /* Run the thread on the boot processor */ KeSetSystemAffinityThread(1); /* Now check what the caller wants */ switch (SystemAction) { /* Reset */ case PowerActionShutdownReset: /* Try platform driver first, then legacy */ //PopInvokeSystemStateHandler(PowerStateShutdownReset, NULL); PopSetSystemPowerState(PowerSystemShutdown, SystemAction); HalReturnToFirmware(HalRebootRoutine); break; case PowerActionShutdown: /* Check for group policy that says to use "it is now safe" screen */ if (PopShutdownPowerOffPolicy) { /* FIXFIX: Switch to legacy shutdown handler */ //PopPowerStateHandlers[PowerStateShutdownOff].Handler = PopShutdownHandler; } case PowerActionShutdownOff: /* Call shutdown handler */ //PopInvokeSystemStateHandler(PowerStateShutdownOff, NULL); /* ReactOS Hack */ PopSetSystemPowerState(PowerSystemShutdown, SystemAction); PopShutdownHandler(); /* If that didn't work, call the HAL */ HalReturnToFirmware(HalPowerDownRoutine); break; default: break; } /* Anything else should not happen */ KeBugCheckEx(INTERNAL_POWER_ERROR, 5, 0, 0, 0); }
// This function is even more a hack // It will remove the dll from the Debug manager // but vs.net does not unload the symbols (don't know why) // The dll can be loaded again after unloading. // This function leaks memory. void DllLoader::UnloadSymbols() { #ifdef ENABLE_SYMBOL_UNLOADING ANSI_STRING name; OBJECT_ATTRIBUTES attributes; RtlInitAnsiString(&name, GetName()); InitializeObjectAttributes(&attributes, &name, OBJ_CASE_INSENSITIVE, NULL); // Try to unload the sybols from vs.net debugger DbgUnLoadImageSymbols(&name, (ULONG)hModule, 0xFFFFFFFF); LPVOID pBaseAddress=GetXbdmBaseAddress(); if (pBaseAddress) { CoffLoader dllxbdm; if (dllxbdm.ParseHeaders(pBaseAddress)) { int offset=GetDmiOffset(dllxbdm.WindowsHeader->CheckSum); if (offset==0) { CLog::Log(LOGDEBUG,"DllLoader: Unable to unload symbols for %s. No offset for xbdm.dll with checksum 0x%08X found", GetName(), dllxbdm.WindowsHeader->CheckSum); return; } try { std::wstring strNameW; g_charsetConverter.utf8ToW(GetName(), strNameW); // Get the address of the global struct g_dmi // It is located inside the xbdm.dll and // get the LoadedModuleList member (here the entry var) // of the structure. LPBYTE g_dmi=((LPBYTE)pBaseAddress)+offset; LIST_ENTRY* entry=(LIST_ENTRY*)(g_dmi+4); // Search for the dll we are unloading... while (entry) { std::wstring baseName=(wchar_t*)((LDR_DATA_TABLE_ENTRY*)entry)->BaseDllName.Buffer; if (baseName == strNameW) { // ...and remove it from the LoadedModuleList and free its memory. LIST_ENTRY* back=entry->Blink; LIST_ENTRY* front=entry->Flink; back->Flink=front; front->Blink=back; DmFreePool(entry); break; } entry=entry->Flink; } } catch(...) { CLog::Log(LOGDEBUG,"DllLoader: Unloading symbols for %s failed with an exception.", GetName()); } } } else CLog::Log(LOGDEBUG,"DllLoader: Can't unload symbols for %s. xbdm.dll is needed and not loaded", GetName()); #endif }
VOID NTAPI KeBugCheckWithTf(IN ULONG BugCheckCode, IN ULONG_PTR BugCheckParameter1, IN ULONG_PTR BugCheckParameter2, IN ULONG_PTR BugCheckParameter3, IN ULONG_PTR BugCheckParameter4, IN PKTRAP_FRAME TrapFrame) { PKPRCB Prcb = KeGetCurrentPrcb(); CONTEXT Context; ULONG MessageId; CHAR AnsiName[128]; BOOLEAN IsSystem, IsHardError = FALSE, Reboot = FALSE; PCHAR HardErrCaption = NULL, HardErrMessage = NULL; PVOID Pc = NULL, Memory; PVOID DriverBase; PLDR_DATA_TABLE_ENTRY LdrEntry; PULONG_PTR HardErrorParameters; KIRQL OldIrql; #ifdef CONFIG_SMP LONG i = 0; #endif /* Set active bugcheck */ KeBugCheckActive = TRUE; KiBugCheckDriver = NULL; /* Check if this is power failure simulation */ if (BugCheckCode == POWER_FAILURE_SIMULATE) { /* Call the Callbacks and reboot */ KiDoBugCheckCallbacks(); HalReturnToFirmware(HalRebootRoutine); } /* Save the IRQL and set hardware trigger */ Prcb->DebuggerSavedIRQL = KeGetCurrentIrql(); InterlockedIncrement((PLONG)&KiHardwareTrigger); /* Capture the CPU Context */ RtlCaptureContext(&Prcb->ProcessorState.ContextFrame); KiSaveProcessorControlState(&Prcb->ProcessorState); Context = Prcb->ProcessorState.ContextFrame; /* FIXME: Call the Watchdog if it's registered */ /* Check which bugcode this is */ switch (BugCheckCode) { /* These bug checks already have detailed messages, keep them */ case UNEXPECTED_KERNEL_MODE_TRAP: case DRIVER_CORRUPTED_EXPOOL: case ACPI_BIOS_ERROR: case ACPI_BIOS_FATAL_ERROR: case THREAD_STUCK_IN_DEVICE_DRIVER: case DATA_BUS_ERROR: case FAT_FILE_SYSTEM: case NO_MORE_SYSTEM_PTES: case INACCESSIBLE_BOOT_DEVICE: /* Keep the same code */ MessageId = BugCheckCode; break; /* Check if this is a kernel-mode exception */ case KERNEL_MODE_EXCEPTION_NOT_HANDLED: case SYSTEM_THREAD_EXCEPTION_NOT_HANDLED: case KMODE_EXCEPTION_NOT_HANDLED: /* Use the generic text message */ MessageId = KMODE_EXCEPTION_NOT_HANDLED; break; /* File-system errors */ case NTFS_FILE_SYSTEM: /* Use the generic message for FAT */ MessageId = FAT_FILE_SYSTEM; break; /* Check if this is a coruption of the Mm's Pool */ case DRIVER_CORRUPTED_MMPOOL: /* Use generic corruption message */ MessageId = DRIVER_CORRUPTED_EXPOOL; break; /* Check if this is a signature check failure */ case STATUS_SYSTEM_IMAGE_BAD_SIGNATURE: /* Use the generic corruption message */ MessageId = BUGCODE_PSS_MESSAGE_SIGNATURE; break; /* All other codes */ default: /* Use the default bugcheck message */ MessageId = BUGCODE_PSS_MESSAGE; break; } /* Save bugcheck data */ KiBugCheckData[0] = BugCheckCode; KiBugCheckData[1] = BugCheckParameter1; KiBugCheckData[2] = BugCheckParameter2; KiBugCheckData[3] = BugCheckParameter3; KiBugCheckData[4] = BugCheckParameter4; /* Now check what bugcheck this is */ switch (BugCheckCode) { /* Invalid access to R/O memory or Unhandled KM Exception */ case KERNEL_MODE_EXCEPTION_NOT_HANDLED: case ATTEMPTED_WRITE_TO_READONLY_MEMORY: case ATTEMPTED_EXECUTE_OF_NOEXECUTE_MEMORY: /* Check if we have a trap frame */ if (!TrapFrame) { /* Use parameter 3 as a trap frame, if it exists */ if (BugCheckParameter3) TrapFrame = (PVOID)BugCheckParameter3; } /* Check if we got one now and if we need to get the Program Counter */ if ((TrapFrame) && (BugCheckCode != KERNEL_MODE_EXCEPTION_NOT_HANDLED)) { /* Get the Program Counter */ Pc = (PVOID)KeGetTrapFramePc(TrapFrame); } break; /* Wrong IRQL */ case IRQL_NOT_LESS_OR_EQUAL: /* * The NT kernel has 3 special sections: * MISYSPTE, POOLMI and POOLCODE. The bug check code can * determine in which of these sections this bugcode happened * and provide a more detailed analysis. For now, we don't. */ /* Program Counter is in parameter 4 */ Pc = (PVOID)BugCheckParameter4; /* Get the driver base */ DriverBase = KiPcToFileHeader(Pc, &LdrEntry, FALSE, &IsSystem); if (IsSystem) { /* * The error happened inside the kernel or HAL. * Get the memory address that was being referenced. */ Memory = (PVOID)BugCheckParameter1; /* Find to which driver it belongs */ DriverBase = KiPcToFileHeader(Memory, &LdrEntry, TRUE, &IsSystem); if (DriverBase) { /* Get the driver name and update the bug code */ KiBugCheckDriver = &LdrEntry->BaseDllName; KiBugCheckData[0] = DRIVER_PORTION_MUST_BE_NONPAGED; } else { /* Find the driver that unloaded at this address */ KiBugCheckDriver = NULL; // FIXME: ROS can't locate /* Check if the cause was an unloaded driver */ if (KiBugCheckDriver) { /* Update bug check code */ KiBugCheckData[0] = SYSTEM_SCAN_AT_RAISED_IRQL_CAUGHT_IMPROPER_DRIVER_UNLOAD; } } } else { /* Update the bug check code */ KiBugCheckData[0] = DRIVER_IRQL_NOT_LESS_OR_EQUAL; } /* Clear Pc so we don't look it up later */ Pc = NULL; break; /* Hard error */ case FATAL_UNHANDLED_HARD_ERROR: /* Copy bug check data from hard error */ HardErrorParameters = (PULONG_PTR)BugCheckParameter2; KiBugCheckData[0] = BugCheckParameter1; KiBugCheckData[1] = HardErrorParameters[0]; KiBugCheckData[2] = HardErrorParameters[1]; KiBugCheckData[3] = HardErrorParameters[2]; KiBugCheckData[4] = HardErrorParameters[3]; /* Remember that this is hard error and set the caption/message */ IsHardError = TRUE; HardErrCaption = (PCHAR)BugCheckParameter3; HardErrMessage = (PCHAR)BugCheckParameter4; break; /* Page fault */ case PAGE_FAULT_IN_NONPAGED_AREA: /* Assume no driver */ DriverBase = NULL; /* Check if we have a trap frame */ if (!TrapFrame) { /* We don't, use parameter 3 if possible */ if (BugCheckParameter3) TrapFrame = (PVOID)BugCheckParameter3; } /* Check if we have a frame now */ if (TrapFrame) { /* Get the Program Counter */ Pc = (PVOID)KeGetTrapFramePc(TrapFrame); KiBugCheckData[3] = (ULONG_PTR)Pc; /* Find out if was in the kernel or drivers */ DriverBase = KiPcToFileHeader(Pc, &LdrEntry, FALSE, &IsSystem); } else { /* Can't blame a driver, assume system */ IsSystem = TRUE; } /* FIXME: Check for session pool in addition to special pool */ /* Special pool has its own bug check codes */ if (MmIsSpecialPoolAddress((PVOID)BugCheckParameter1)) { if (MmIsSpecialPoolAddressFree((PVOID)BugCheckParameter1)) { KiBugCheckData[0] = IsSystem ? PAGE_FAULT_IN_FREED_SPECIAL_POOL : DRIVER_PAGE_FAULT_IN_FREED_SPECIAL_POOL; } else { KiBugCheckData[0] = IsSystem ? PAGE_FAULT_BEYOND_END_OF_ALLOCATION : DRIVER_PAGE_FAULT_BEYOND_END_OF_ALLOCATION; } } else if (!DriverBase) { /* Find the driver that unloaded at this address */ KiBugCheckDriver = NULL; // FIXME: ROS can't locate /* Check if the cause was an unloaded driver */ if (KiBugCheckDriver) { KiBugCheckData[0] = DRIVER_UNLOADED_WITHOUT_CANCELLING_PENDING_OPERATIONS; } } break; /* Check if the driver forgot to unlock pages */ case DRIVER_LEFT_LOCKED_PAGES_IN_PROCESS: /* Program Counter is in parameter 1 */ Pc = (PVOID)BugCheckParameter1; break; /* Check if the driver consumed too many PTEs */ case DRIVER_USED_EXCESSIVE_PTES: /* Loader entry is in parameter 1 */ LdrEntry = (PVOID)BugCheckParameter1; KiBugCheckDriver = &LdrEntry->BaseDllName; break; /* Check if the driver has a stuck thread */ case THREAD_STUCK_IN_DEVICE_DRIVER: /* The name is in Parameter 3 */ KiBugCheckDriver = (PVOID)BugCheckParameter3; break; /* Anything else */ default: break; } /* Do we have a driver name? */ if (KiBugCheckDriver) { /* Convert it to ANSI */ KeBugCheckUnicodeToAnsi(KiBugCheckDriver, AnsiName, sizeof(AnsiName)); } else { /* Do we have a Program Counter? */ if (Pc) { /* Dump image name */ KiDumpParameterImages(AnsiName, (PULONG_PTR)&Pc, 1, KeBugCheckUnicodeToAnsi); } } /* Check if we need to save the context for KD */ #ifdef _WINKD_ if (!KdPitchDebugger) KdDebuggerDataBlock.SavedContext = (ULONG_PTR)&Context; #endif /* Check if a debugger is connected */ if ((BugCheckCode != MANUALLY_INITIATED_CRASH) && (KdDebuggerEnabled)) { /* Crash on the debugger console */ DbgPrint("\n*** Fatal System Error: 0x%08lx\n" " (0x%p,0x%p,0x%p,0x%p)\n\n", KiBugCheckData[0], KiBugCheckData[1], KiBugCheckData[2], KiBugCheckData[3], KiBugCheckData[4]); /* Check if the debugger isn't currently connected */ if (!KdDebuggerNotPresent) { /* Check if we have a driver to blame */ if (KiBugCheckDriver) { /* Dump it */ DbgPrint("Driver at fault: %s.\n", AnsiName); } /* Check if this was a hard error */ if (IsHardError) { /* Print caption and message */ if (HardErrCaption) DbgPrint(HardErrCaption); if (HardErrMessage) DbgPrint(HardErrMessage); } /* Break in the debugger */ KiBugCheckDebugBreak(DBG_STATUS_BUGCHECK_FIRST); } else { /* * ROS HACK. * Ok, so debugging is enabled, but KDBG isn't there. * We'll manually dump the stack for the user. */ KeRosDumpStackFrames(NULL, 0); /* ROS HACK 2: Generate something useful for Bugzilla */ KeRosDumpTriageForBugZillaReport(); } } /* Raise IRQL to HIGH_LEVEL */ _disable(); KeRaiseIrql(HIGH_LEVEL, &OldIrql); /* Avoid recursion */ if (!InterlockedDecrement((PLONG)&KeBugCheckCount)) { #ifdef CONFIG_SMP /* Set CPU that is bug checking now */ KeBugCheckOwner = Prcb->Number; /* Freeze the other CPUs */ for (i = 0; i < KeNumberProcessors; i++) { if (i != (LONG)KeGetCurrentProcessorNumber()) { /* Send the IPI and give them one second to catch up */ KiIpiSend(1 << i, IPI_FREEZE); KeStallExecutionProcessor(1000000); } } #endif /* Display the BSOD */ KiDisplayBlueScreen(MessageId, IsHardError, HardErrCaption, HardErrMessage, AnsiName); /* Check if the debugger is disabled but we can enable it */ if (!(KdDebuggerEnabled) && !(KdPitchDebugger)) { /* Enable it */ #ifdef _WINKD_ KdEnableDebuggerWithLock(FALSE); #endif } else { /* Otherwise, print the last line */ InbvDisplayString("\r\n"); } /* Save the context */ Prcb->ProcessorState.ContextFrame = Context; /* FIXME: Support Triage Dump */ /* FIXME: Write the crash dump */ } else { /* Increase recursion count */ KeBugCheckOwnerRecursionCount++; if (KeBugCheckOwnerRecursionCount == 2) { /* Break in the debugger */ KiBugCheckDebugBreak(DBG_STATUS_BUGCHECK_SECOND); } else if (KeBugCheckOwnerRecursionCount > 2) { /* Halt execution */ while (TRUE); } } /* Call the Callbacks */ KiDoBugCheckCallbacks(); /* FIXME: Call Watchdog if enabled */ /* Check if we have to reboot */ if (Reboot) { /* Unload symbols */ DbgUnLoadImageSymbols(NULL, (PVOID)MAXULONG_PTR, 0); HalReturnToFirmware(HalRebootRoutine); } /* Attempt to break in the debugger (otherwise halt CPU) */ KiBugCheckDebugBreak(DBG_STATUS_BUGCHECK_SECOND); /* Shouldn't get here */ ASSERT(FALSE); while (TRUE); }
NTSTATUS NtShutdownSystem( IN SHUTDOWN_ACTION Action ) /*++ Routine Description: This service is used to safely shutdown the system. N.B. The caller must have SeShutdownPrivilege to shut down the system. Arguments: Action - Supplies an action that is to be taken after having shutdown. Return Value: !NT_SUCCESS - The operation failed or the caller did not have appropriate priviledges. --*/ { POWER_ACTION SystemAction; KPROCESSOR_MODE PreviousMode; NTSTATUS Status; // // Convert shutdown action to system action // switch (Action) { case ShutdownNoReboot: SystemAction = PowerActionShutdown; break; case ShutdownReboot: SystemAction = PowerActionShutdownReset; break; case ShutdownPowerOff: SystemAction = PowerActionShutdownOff; break; default: return STATUS_INVALID_PARAMETER; } // // Check to determine if the caller has the privilege to shutdown the // system. // PreviousMode = KeGetPreviousMode(); if (PreviousMode != KernelMode) { // // Check to see if the caller has the privilege to make this // call. // if (!SeSinglePrivilegeCheck( SeShutdownPrivilege, PreviousMode )) { return STATUS_PRIVILEGE_NOT_HELD; } return ZwShutdownSystem(Action); } else { MmLockPagableCodeSection((PVOID)MmShutdownSystem); } // // Prevent further hard error popups. // ExpTooLateForErrors = TRUE; // // Invoke each component of the executive that needs to be notified // that a shutdown is about to take place. // ExShutdownSystem(); IoShutdownSystem(0); CmShutdownSystem(); MmShutdownSystem(); IoShutdownSystem(1); // // If the system is to be rebooted or powered off, then perform the // final operations. // if (Action != ShutdownNoReboot) { DbgUnLoadImageSymbols( NULL, (PVOID)-1, 0 ); if (Action == ShutdownReboot) { HalReturnToFirmware( HalRebootRoutine ); } else { HalReturnToFirmware( HalPowerDownRoutine ); } } // // Bypass policy manager and pass directly to SetSystemPowerState // Status = NtSetSystemPowerState ( SystemAction, PowerSystemSleeping3, POWER_ACTION_OVERRIDE_APPS | POWER_ACTION_DISABLE_WAKES | POWER_ACTION_CRITICAL ); return STATUS_SUCCESS; }