/* * PROJECT: ReactOS Kernel * LICENSE: GPL - See COPYING in the top level directory * FILE: ntoskrnl/ps/query.c * PURPOSE: Process Manager: Thread/Process Query/Set Information * PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org) * Thomas Weidenmueller (w3seek@reactos.org) * Eric Kohl */ /* INCLUDES ******************************************************************/ #include #define NDEBUG #include /* Debugging Level */ ULONG PspTraceLevel = 0; /* PRIVATE FUNCTIONS *********************************************************/ NTSTATUS NTAPI PsReferenceProcessFilePointer(IN PEPROCESS Process, OUT PFILE_OBJECT *FileObject) { PSECTION Section; PAGED_CODE(); /* Lock the process */ if (!ExAcquireRundownProtection(&Process->RundownProtect)) { return STATUS_PROCESS_IS_TERMINATING; } /* Get the section */ Section = Process->SectionObject; if (Section) { /* Get the file object and reference it */ *FileObject = MmGetFileObjectForSection((PVOID)Section); ObReferenceObject(*FileObject); } /* Release the protection */ ExReleaseRundownProtection(&Process->RundownProtect); /* Return status */ return Section ? STATUS_SUCCESS : STATUS_UNSUCCESSFUL; } /* PUBLIC FUNCTIONS **********************************************************/ /* * @implemented */ NTSTATUS NTAPI NtQueryInformationProcess( _In_ HANDLE ProcessHandle, _In_ PROCESSINFOCLASS ProcessInformationClass, _Out_ PVOID ProcessInformation, _In_ ULONG ProcessInformationLength, _Out_opt_ PULONG ReturnLength) { PEPROCESS Process; KPROCESSOR_MODE PreviousMode = ExGetPreviousMode(); NTSTATUS Status; ULONG Length = 0; HANDLE DebugPort = 0; PPROCESS_BASIC_INFORMATION ProcessBasicInfo = (PPROCESS_BASIC_INFORMATION)ProcessInformation; PKERNEL_USER_TIMES ProcessTime = (PKERNEL_USER_TIMES)ProcessInformation; ULONG UserTime, KernelTime; PPROCESS_PRIORITY_CLASS PsPriorityClass = (PPROCESS_PRIORITY_CLASS)ProcessInformation; ULONG HandleCount; PPROCESS_SESSION_INFORMATION SessionInfo = (PPROCESS_SESSION_INFORMATION)ProcessInformation; PVM_COUNTERS VmCounters = (PVM_COUNTERS)ProcessInformation; PIO_COUNTERS IoCounters = (PIO_COUNTERS)ProcessInformation; PQUOTA_LIMITS QuotaLimits = (PQUOTA_LIMITS)ProcessInformation; PUNICODE_STRING ImageName; ULONG Cookie, ExecuteOptions = 0; ULONG_PTR Wow64 = 0; PROCESS_VALUES ProcessValues; ULONG Flags; PAGED_CODE(); /* Verify Information Class validity */ Status = DefaultQueryInfoBufferCheck(ProcessInformationClass, PsProcessInfoClass, RTL_NUMBER_OF(PsProcessInfoClass), ProcessInformation, ProcessInformationLength, ReturnLength, NULL, PreviousMode, FALSE); if (!NT_SUCCESS(Status)) { DPRINT1("NtQueryInformationProcess(): Information verification class failed! (Status -> 0x%lx, ProcessInformationClass -> %lx)\n", Status, ProcessInformationClass); return Status; } if (((ProcessInformationClass == ProcessCookie) || (ProcessInformationClass == ProcessImageInformation)) && (ProcessHandle != NtCurrentProcess())) { /* * Retrieving the process cookie is only allowed for the calling process * itself! XP only allows NtCurrentProcess() as process handles even if * a real handle actually represents the current process. */ return STATUS_INVALID_PARAMETER; } /* Check the information class */ switch (ProcessInformationClass) { /* Basic process information */ case ProcessBasicInformation: if (ProcessInformationLength != sizeof(PROCESS_BASIC_INFORMATION)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set return length */ Length = sizeof(PROCESS_BASIC_INFORMATION); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Protect writes with SEH */ _SEH2_TRY { /* Write all the information from the EPROCESS/KPROCESS */ ProcessBasicInfo->ExitStatus = Process->ExitStatus; ProcessBasicInfo->PebBaseAddress = Process->Peb; ProcessBasicInfo->AffinityMask = Process->Pcb.Affinity; ProcessBasicInfo->UniqueProcessId = (ULONG_PTR)Process-> UniqueProcessId; ProcessBasicInfo->InheritedFromUniqueProcessId = (ULONG_PTR)Process->InheritedFromUniqueProcessId; ProcessBasicInfo->BasePriority = Process->Pcb.BasePriority; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; /* Process quota limits */ case ProcessQuotaLimits: if (ProcessInformationLength != sizeof(QUOTA_LIMITS)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } Length = sizeof(QUOTA_LIMITS); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Indicate success */ Status = STATUS_SUCCESS; _SEH2_TRY { /* Set max/min working set sizes */ QuotaLimits->MaximumWorkingSetSize = Process->Vm.MaximumWorkingSetSize << PAGE_SHIFT; QuotaLimits->MinimumWorkingSetSize = Process->Vm.MinimumWorkingSetSize << PAGE_SHIFT; /* Set default time limits */ QuotaLimits->TimeLimit.LowPart = MAXULONG; QuotaLimits->TimeLimit.HighPart = MAXULONG; /* Is quota block a default one? */ if (Process->QuotaBlock == &PspDefaultQuotaBlock) { /* Set default pools and pagefile limits */ QuotaLimits->PagedPoolLimit = (SIZE_T)-1; QuotaLimits->NonPagedPoolLimit = (SIZE_T)-1; QuotaLimits->PagefileLimit = (SIZE_T)-1; } else { /* Get limits from non-default quota block */ QuotaLimits->PagedPoolLimit = Process->QuotaBlock->QuotaEntry[PagedPool].Limit; QuotaLimits->NonPagedPoolLimit = Process->QuotaBlock->QuotaEntry[NonPagedPool].Limit; QuotaLimits->PagefileLimit = Process->QuotaBlock->QuotaEntry[2].Limit; } } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; case ProcessIoCounters: if (ProcessInformationLength != sizeof(IO_COUNTERS)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } Length = sizeof(IO_COUNTERS); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Query IO counters from the process */ KeQueryValuesProcess(&Process->Pcb, &ProcessValues); _SEH2_TRY { RtlCopyMemory(IoCounters, &ProcessValues.IoInfo, sizeof(IO_COUNTERS)); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Ignore exception */ } _SEH2_END; /* Set status to success in any case */ Status = STATUS_SUCCESS; /* Dereference the process */ ObDereferenceObject(Process); break; /* Timing */ case ProcessTimes: /* Set the return length */ if (ProcessInformationLength != sizeof(KERNEL_USER_TIMES)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } Length = sizeof(KERNEL_USER_TIMES); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Protect writes with SEH */ _SEH2_TRY { /* Copy time information from EPROCESS/KPROCESS */ KernelTime = KeQueryRuntimeProcess(&Process->Pcb, &UserTime); ProcessTime->CreateTime = Process->CreateTime; ProcessTime->UserTime.QuadPart = (LONGLONG)UserTime * KeMaximumIncrement; ProcessTime->KernelTime.QuadPart = (LONGLONG)KernelTime * KeMaximumIncrement; ProcessTime->ExitTime = Process->ExitTime; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; /* Process Debug Port */ case ProcessDebugPort: if (ProcessInformationLength != sizeof(HANDLE)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set return length */ Length = sizeof(HANDLE); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Protect write with SEH */ _SEH2_TRY { /* Return whether or not we have a debug port */ *(PHANDLE)ProcessInformation = (Process->DebugPort ? (HANDLE)-1 : NULL); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; case ProcessHandleCount: if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length*/ Length = sizeof(ULONG); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Count the number of handles this process has */ HandleCount = ObGetProcessHandleCount(Process); /* Protect write in SEH */ _SEH2_TRY { /* Return the count of handles */ *(PULONG)ProcessInformation = HandleCount; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; /* Session ID for the process */ case ProcessSessionInformation: if (ProcessInformationLength != sizeof(PROCESS_SESSION_INFORMATION)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length*/ Length = sizeof(PROCESS_SESSION_INFORMATION); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Enter SEH for write safety */ _SEH2_TRY { /* Write back the Session ID */ SessionInfo->SessionId = PsGetProcessSessionId(Process); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; /* Virtual Memory Statistics */ case ProcessVmCounters: /* Validate the input length */ if ((ProcessInformationLength != sizeof(VM_COUNTERS)) && (ProcessInformationLength != sizeof(VM_COUNTERS_EX))) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Enter SEH for write safety */ _SEH2_TRY { /* Return data from EPROCESS */ VmCounters->PeakVirtualSize = Process->PeakVirtualSize; VmCounters->VirtualSize = Process->VirtualSize; VmCounters->PageFaultCount = Process->Vm.PageFaultCount; VmCounters->PeakWorkingSetSize = Process->Vm.PeakWorkingSetSize; VmCounters->WorkingSetSize = Process->Vm.WorkingSetSize; VmCounters->QuotaPeakPagedPoolUsage = Process->QuotaPeak[PsPagedPool]; VmCounters->QuotaPagedPoolUsage = Process->QuotaUsage[PsPagedPool]; VmCounters->QuotaPeakNonPagedPoolUsage = Process->QuotaPeak[PsNonPagedPool]; VmCounters->QuotaNonPagedPoolUsage = Process->QuotaUsage[PsNonPagedPool]; VmCounters->PagefileUsage = Process->QuotaUsage[PsPageFile] << PAGE_SHIFT; VmCounters->PeakPagefileUsage = Process->QuotaPeak[PsPageFile] << PAGE_SHIFT; //VmCounters->PrivateUsage = Process->CommitCharge << PAGE_SHIFT; // /* Set the return length */ Length = ProcessInformationLength; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; /* Hard Error Processing Mode */ case ProcessDefaultHardErrorMode: if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length*/ Length = sizeof(ULONG); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Enter SEH for writing back data */ _SEH2_TRY { /* Write the current processing mode */ *(PULONG)ProcessInformation = Process-> DefaultHardErrorProcessing; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; /* Priority Boosting status */ case ProcessPriorityBoost: if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length */ Length = sizeof(ULONG); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Enter SEH for writing back data */ _SEH2_TRY { /* Return boost status */ *(PULONG)ProcessInformation = Process->Pcb.DisableBoost ? TRUE : FALSE; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; /* DOS Device Map */ case ProcessDeviceMap: if (ProcessInformationLength == sizeof(PROCESS_DEVICEMAP_INFORMATION_EX)) { /* Protect read in SEH */ _SEH2_TRY { PPROCESS_DEVICEMAP_INFORMATION_EX DeviceMapEx = ProcessInformation; Flags = DeviceMapEx->Flags; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Only one flag is supported and it needs LUID mappings */ if ((Flags & ~PROCESS_LUID_DOSDEVICES_ONLY) != 0 || !ObIsLUIDDeviceMapsEnabled()) { Status = STATUS_INVALID_PARAMETER; break; } } else { /* This has to be the size of the Query union field for x64 compatibility! */ if (ProcessInformationLength != RTL_FIELD_SIZE(PROCESS_DEVICEMAP_INFORMATION, Query)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* No flags for standard call */ Flags = 0; } /* Set the return length */ Length = ProcessInformationLength; /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Query the device map information */ Status = ObQueryDeviceMapInformation(Process, ProcessInformation, Flags); /* Dereference the process */ ObDereferenceObject(Process); break; /* Priority class */ case ProcessPriorityClass: if (ProcessInformationLength != sizeof(PROCESS_PRIORITY_CLASS)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length*/ Length = sizeof(PROCESS_PRIORITY_CLASS); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Enter SEH for writing back data */ _SEH2_TRY { /* Return current priority class */ PsPriorityClass->PriorityClass = Process->PriorityClass; PsPriorityClass->Foreground = FALSE; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; case ProcessImageFileName: /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Get the image path */ Status = SeLocateProcessImageName(Process, &ImageName); if (NT_SUCCESS(Status)) { /* Set return length */ Length = ImageName->MaximumLength + sizeof(OBJECT_NAME_INFORMATION); /* Make sure it's large enough */ if (Length <= ProcessInformationLength) { /* Enter SEH to protect write */ _SEH2_TRY { /* Copy it */ RtlCopyMemory(ProcessInformation, ImageName, Length); /* Update pointer */ ((PUNICODE_STRING)ProcessInformation)->Buffer = (PWSTR)((PUNICODE_STRING)ProcessInformation + 1); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; } else { /* Buffer too small */ Status = STATUS_INFO_LENGTH_MISMATCH; } /* Free the image path */ ExFreePoolWithTag(ImageName, TAG_SEPA); } /* Dereference the process */ ObDereferenceObject(Process); break; case ProcessDebugFlags: if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length*/ Length = sizeof(ULONG); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Enter SEH for writing back data */ _SEH2_TRY { /* Return the debug flag state */ *(PULONG)ProcessInformation = Process->NoDebugInherit ? 0 : 1; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; case ProcessBreakOnTermination: if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length */ Length = sizeof(ULONG); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Enter SEH for writing back data */ _SEH2_TRY { /* Return the BreakOnTermination state */ *(PULONG)ProcessInformation = Process->BreakOnTermination; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; /* Per-process security cookie */ case ProcessCookie: if (ProcessInformationLength != sizeof(ULONG)) { /* Length size wrong, bail out */ Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Get the current process and cookie */ Process = PsGetCurrentProcess(); Cookie = Process->Cookie; if (!Cookie) { LARGE_INTEGER SystemTime; ULONG NewCookie; PKPRCB Prcb; /* Generate a new cookie */ KeQuerySystemTime(&SystemTime); Prcb = KeGetCurrentPrcb(); NewCookie = Prcb->KeSystemCalls ^ Prcb->InterruptTime ^ SystemTime.u.LowPart ^ SystemTime.u.HighPart; /* Set the new cookie or return the current one */ Cookie = InterlockedCompareExchange((LONG*)&Process->Cookie, NewCookie, Cookie); if (!Cookie) Cookie = NewCookie; /* Set return length */ Length = sizeof(ULONG); } /* Indicate success */ Status = STATUS_SUCCESS; /* Enter SEH to protect write */ _SEH2_TRY { /* Write back the cookie */ *(PULONG)ProcessInformation = Cookie; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; break; case ProcessImageInformation: if (ProcessInformationLength != sizeof(SECTION_IMAGE_INFORMATION)) { /* Break out */ Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the length required and validate it */ Length = sizeof(SECTION_IMAGE_INFORMATION); /* Enter SEH to protect write */ _SEH2_TRY { MmGetImageInformation((PSECTION_IMAGE_INFORMATION)ProcessInformation); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Indicate success */ Status = STATUS_SUCCESS; break; case ProcessDebugObjectHandle: if (ProcessInformationLength != sizeof(HANDLE)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length */ Length = sizeof(HANDLE); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Get the debug port */ Status = DbgkOpenProcessDebugPort(Process, PreviousMode, &DebugPort); /* Let go of the process */ ObDereferenceObject(Process); /* Protect write in SEH */ _SEH2_TRY { /* Return debug port's handle */ *(PHANDLE)ProcessInformation = DebugPort; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; break; case ProcessHandleTracing: DPRINT1("Handle tracing Not implemented: %lx\n", ProcessInformationClass); Status = STATUS_NOT_IMPLEMENTED; break; case ProcessLUIDDeviceMapsEnabled: if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length */ Length = sizeof(ULONG); /* Indicate success */ Status = STATUS_SUCCESS; /* Protect write in SEH */ _SEH2_TRY { /* Query Ob */ *(PULONG)ProcessInformation = ObIsLUIDDeviceMapsEnabled(); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; break; case ProcessWx86Information: if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set the return length */ Length = sizeof(ULONG); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Protect write in SEH */ _SEH2_TRY { /* Return if the flag is set */ *(PULONG)ProcessInformation = (ULONG)Process->VdmAllowed; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; case ProcessWow64Information: if (ProcessInformationLength != sizeof(ULONG_PTR)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set return length */ Length = sizeof(ULONG_PTR); /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, PROCESS_QUERY_INFORMATION, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) break; /* Make sure the process isn't dying */ if (ExAcquireRundownProtection(&Process->RundownProtect)) { /* Get the WOW64 process structure */ #ifdef _WIN64 Wow64 = (ULONG_PTR)Process->Wow64Process; #else Wow64 = 0; #endif /* Release the lock */ ExReleaseRundownProtection(&Process->RundownProtect); } /* Protect write with SEH */ _SEH2_TRY { /* Return whether or not we have a debug port */ *(PULONG_PTR)ProcessInformation = Wow64; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the process */ ObDereferenceObject(Process); break; case ProcessExecuteFlags: if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Set return length */ Length = sizeof(ULONG); if (ProcessHandle != NtCurrentProcess()) { return STATUS_INVALID_PARAMETER; } /* Get the options */ Status = MmGetExecuteOptions(&ExecuteOptions); if (NT_SUCCESS(Status)) { /* Protect write with SEH */ _SEH2_TRY { /* Return them */ *(PULONG)ProcessInformation = ExecuteOptions; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; } break; case ProcessLdtInformation: DPRINT1("VDM/16-bit not implemented: %lx\n", ProcessInformationClass); Status = STATUS_NOT_IMPLEMENTED; break; case ProcessWorkingSetWatch: DPRINT1("WS Watch Not implemented: %lx\n", ProcessInformationClass); Status = STATUS_NOT_IMPLEMENTED; break; case ProcessPooledUsageAndLimits: DPRINT1("Pool limits Not implemented: %lx\n", ProcessInformationClass); Status = STATUS_NOT_IMPLEMENTED; break; /* Not supported by Server 2003 */ default: DPRINT1("Unsupported info class: %lx\n", ProcessInformationClass); Status = STATUS_INVALID_INFO_CLASS; } /* Protect write with SEH */ _SEH2_TRY { /* Check if caller wanted return length */ if ((ReturnLength) && (Length)) *ReturnLength = Length; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; return Status; } /* * @implemented */ NTSTATUS NTAPI NtSetInformationProcess(IN HANDLE ProcessHandle, IN PROCESSINFOCLASS ProcessInformationClass, IN PVOID ProcessInformation, IN ULONG ProcessInformationLength) { PEPROCESS Process; KPROCESSOR_MODE PreviousMode = ExGetPreviousMode(); ACCESS_MASK Access; NTSTATUS Status; HANDLE PortHandle = NULL; HANDLE TokenHandle = NULL; HANDLE DirectoryHandle = NULL; PROCESS_SESSION_INFORMATION SessionInfo = {0}; PROCESS_PRIORITY_CLASS PriorityClass = {0}; PROCESS_FOREGROUND_BACKGROUND Foreground = {0}; PVOID ExceptionPort; ULONG Break; KAFFINITY ValidAffinity, Affinity = 0; KPRIORITY BasePriority = 0; UCHAR MemoryPriority = 0; BOOLEAN DisableBoost = 0; ULONG DefaultHardErrorMode = 0; ULONG DebugFlags = 0, EnableFixup = 0, Boost = 0; ULONG NoExecute = 0, VdmPower = 0; BOOLEAN HasPrivilege; PLIST_ENTRY Next; PETHREAD Thread; PAGED_CODE(); /* Verify Information Class validity */ Status = DefaultSetInfoBufferCheck(ProcessInformationClass, PsProcessInfoClass, RTL_NUMBER_OF(PsProcessInfoClass), ProcessInformation, ProcessInformationLength, PreviousMode); if (!NT_SUCCESS(Status)) { DPRINT1("NtSetInformationProcess(): Information verification class failed! (Status -> 0x%lx, ProcessInformationClass -> %lx)\n", Status, ProcessInformationClass); return Status; } /* Check what class this is */ Access = PROCESS_SET_INFORMATION; if (ProcessInformationClass == ProcessSessionInformation) { /* Setting the Session ID needs a special mask */ Access |= PROCESS_SET_SESSIONID; } else if (ProcessInformationClass == ProcessExceptionPort) { /* Setting the exception port needs a special mask */ Access |= PROCESS_SUSPEND_RESUME; } /* Reference the process */ Status = ObReferenceObjectByHandle(ProcessHandle, Access, PsProcessType, PreviousMode, (PVOID*)&Process, NULL); if (!NT_SUCCESS(Status)) return Status; /* Check what kind of information class this is */ switch (ProcessInformationClass) { case ProcessWx86Information: /* Check buffer length */ if (ProcessInformationLength != sizeof(HANDLE)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Capture the boolean */ VdmPower = *(PULONG)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Getting VDM powers requires the SeTcbPrivilege */ if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode)) { /* We don't hold the privilege, bail out */ Status = STATUS_PRIVILEGE_NOT_HELD; DPRINT1("Need TCB privilege\n"); break; } /* Set or clear the flag */ if (VdmPower) { PspSetProcessFlag(Process, PSF_VDM_ALLOWED_BIT); } else { PspClearProcessFlag(Process, PSF_VDM_ALLOWED_BIT); } break; /* Error/Exception Port */ case ProcessExceptionPort: /* Check buffer length */ if (ProcessInformationLength != sizeof(HANDLE)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Capture the handle */ PortHandle = *(PHANDLE)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Setting the error port requires the SeTcbPrivilege */ if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode)) { /* We don't hold the privilege, bail out */ Status = STATUS_PRIVILEGE_NOT_HELD; break; } /* Get the LPC Port */ Status = ObReferenceObjectByHandle(PortHandle, 0, LpcPortObjectType, PreviousMode, (PVOID)&ExceptionPort, NULL); if (!NT_SUCCESS(Status)) break; /* Change the pointer */ if (InterlockedCompareExchangePointer(&Process->ExceptionPort, ExceptionPort, NULL)) { /* We already had one, fail */ ObDereferenceObject(ExceptionPort); Status = STATUS_PORT_ALREADY_SET; } break; /* Security Token */ case ProcessAccessToken: /* Check buffer length */ if (ProcessInformationLength != sizeof(PROCESS_ACCESS_TOKEN)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Save the token handle */ TokenHandle = ((PPROCESS_ACCESS_TOKEN)ProcessInformation)-> Token; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Assign the actual token */ Status = PspSetPrimaryToken(Process, TokenHandle, NULL); break; /* Hard error processing */ case ProcessDefaultHardErrorMode: /* Check buffer length */ if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { DefaultHardErrorMode = *(PULONG)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Set the mode */ Process->DefaultHardErrorProcessing = DefaultHardErrorMode; /* Call Ke for the update */ if (DefaultHardErrorMode & SEM_NOALIGNMENTFAULTEXCEPT) { KeSetAutoAlignmentProcess(&Process->Pcb, TRUE); } else { KeSetAutoAlignmentProcess(&Process->Pcb, FALSE); } Status = STATUS_SUCCESS; break; /* Session ID */ case ProcessSessionInformation: /* Check buffer length */ if (ProcessInformationLength != sizeof(PROCESS_SESSION_INFORMATION)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for capture */ _SEH2_TRY { /* Capture the caller's buffer */ SessionInfo = *(PPROCESS_SESSION_INFORMATION)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Setting the session id requires the SeTcbPrivilege */ if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode)) { /* We don't hold the privilege, bail out */ Status = STATUS_PRIVILEGE_NOT_HELD; break; } #if 0 // OLD AND DEPRECATED CODE!!!! /* FIXME - update the session id for the process token */ //Status = PsLockProcess(Process, FALSE); if (!NT_SUCCESS(Status)) break; /* Write the session ID in the EPROCESS */ Process->Session = UlongToPtr(SessionInfo.SessionId); // HACK!!! /* Check if the process also has a PEB */ if (Process->Peb) { /* * Attach to the process to make sure we're in the right * context to access the PEB structure */ KeAttachProcess(&Process->Pcb); /* Enter SEH for write to user-mode PEB */ _SEH2_TRY { /* Write the session ID */ Process->Peb->SessionId = SessionInfo.SessionId; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Detach from the process */ KeDetachProcess(); } /* Unlock the process */ //PsUnlockProcess(Process); #endif /* * Since we cannot change the session ID of the given * process anymore because it is set once and for all * at process creation time and because it is stored * inside the Process->Session structure managed by MM, * we fake changing it: we just return success if the * user-defined value is the same as the session ID of * the process, and otherwise we fail. */ if (SessionInfo.SessionId == PsGetProcessSessionId(Process)) { Status = STATUS_SUCCESS; } else { Status = STATUS_ACCESS_DENIED; } break; case ProcessPriorityClass: /* Check buffer length */ if (ProcessInformationLength != sizeof(PROCESS_PRIORITY_CLASS)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for capture */ _SEH2_TRY { /* Capture the caller's buffer */ PriorityClass = *(PPROCESS_PRIORITY_CLASS)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Return the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Check for invalid PriorityClass value */ if (PriorityClass.PriorityClass > PROCESS_PRIORITY_CLASS_ABOVE_NORMAL) { Status = STATUS_INVALID_PARAMETER; break; } if ((PriorityClass.PriorityClass != Process->PriorityClass) && (PriorityClass.PriorityClass == PROCESS_PRIORITY_CLASS_REALTIME)) { /* Check the privilege */ HasPrivilege = SeCheckPrivilegedObject(SeIncreaseBasePriorityPrivilege, ProcessHandle, PROCESS_SET_INFORMATION, PreviousMode); if (!HasPrivilege) { ObDereferenceObject(Process); DPRINT1("Privilege to change priority to realtime lacking\n"); return STATUS_PRIVILEGE_NOT_HELD; } } /* Check if we have a job */ if (Process->Job) { DPRINT1("Jobs not yet supported\n"); } /* Set process priority class */ Process->PriorityClass = PriorityClass.PriorityClass; /* Set process priority mode (foreground or background) */ PsSetProcessPriorityByClass(Process, PriorityClass.Foreground ? PsProcessPriorityForeground : PsProcessPriorityBackground); Status = STATUS_SUCCESS; break; case ProcessForegroundInformation: /* Check buffer length */ if (ProcessInformationLength != sizeof(PROCESS_FOREGROUND_BACKGROUND)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for capture */ _SEH2_TRY { /* Capture the caller's buffer */ Foreground = *(PPROCESS_FOREGROUND_BACKGROUND)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Return the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Set process priority mode (foreground or background) */ PsSetProcessPriorityByClass(Process, Foreground.Foreground ? PsProcessPriorityForeground : PsProcessPriorityBackground); Status = STATUS_SUCCESS; break; case ProcessBasePriority: /* Validate input length */ if (ProcessInformationLength != sizeof(KPRIORITY)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { BasePriority = *(KPRIORITY*)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Break = 0; Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Extract the memory priority out of there */ if (BasePriority & 0x80000000) { MemoryPriority = MEMORY_PRIORITY_FOREGROUND; BasePriority &= ~0x80000000; } else { MemoryPriority = MEMORY_PRIORITY_BACKGROUND; } /* Validate the number */ if ((BasePriority > HIGH_PRIORITY) || (BasePriority <= LOW_PRIORITY)) { ObDereferenceObject(Process); return STATUS_INVALID_PARAMETER; } /* Check if the new base is higher */ if (BasePriority > Process->Pcb.BasePriority) { HasPrivilege = SeCheckPrivilegedObject(SeIncreaseBasePriorityPrivilege, ProcessHandle, PROCESS_SET_INFORMATION, PreviousMode); if (!HasPrivilege) { ObDereferenceObject(Process); DPRINT1("Privilege to change priority from %lx to %lx lacking\n", BasePriority, Process->Pcb.BasePriority); return STATUS_PRIVILEGE_NOT_HELD; } } /* Call Ke */ KeSetPriorityAndQuantumProcess(&Process->Pcb, BasePriority, 0); /* Now set the memory priority */ MmSetMemoryPriorityProcess(Process, MemoryPriority); Status = STATUS_SUCCESS; break; case ProcessRaisePriority: /* Validate input length */ if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { Boost = *(PULONG)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Break = 0; Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Make sure the process isn't dying */ if (ExAcquireRundownProtection(&Process->RundownProtect)) { /* Lock it */ KeEnterCriticalRegion(); ExAcquirePushLockShared(&Process->ProcessLock); /* Loop the threads */ for (Next = Process->ThreadListHead.Flink; Next != &Process->ThreadListHead; Next = Next->Flink) { /* Call Ke for the thread */ Thread = CONTAINING_RECORD(Next, ETHREAD, ThreadListEntry); KeBoostPriorityThread(&Thread->Tcb, Boost); } /* Release the lock and rundown */ ExReleasePushLockShared(&Process->ProcessLock); KeLeaveCriticalRegion(); ExReleaseRundownProtection(&Process->RundownProtect); /* Set success code */ Status = STATUS_SUCCESS; } else { /* Avoid race conditions */ Status = STATUS_PROCESS_IS_TERMINATING; } break; case ProcessBreakOnTermination: /* Check buffer length */ if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { Break = *(PULONG)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Break = 0; Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Setting 'break on termination' requires the SeDebugPrivilege */ if (!SeSinglePrivilegeCheck(SeDebugPrivilege, PreviousMode)) { /* We don't hold the privilege, bail out */ Status = STATUS_PRIVILEGE_NOT_HELD; break; } /* Set or clear the flag */ if (Break) { PspSetProcessFlag(Process, PSF_BREAK_ON_TERMINATION_BIT); } else { PspClearProcessFlag(Process, PSF_BREAK_ON_TERMINATION_BIT); } break; case ProcessAffinityMask: /* Check buffer length */ if (ProcessInformationLength != sizeof(KAFFINITY)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { Affinity = *(PKAFFINITY)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Break = 0; Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Make sure it's valid for the CPUs present */ ValidAffinity = Affinity & KeActiveProcessors; if (!Affinity || (ValidAffinity != Affinity)) { Status = STATUS_INVALID_PARAMETER; break; } /* Check if it's within job affinity limits */ if (Process->Job) { /* Not yet implemented */ UNIMPLEMENTED; Status = STATUS_NOT_IMPLEMENTED; break; } /* Make sure the process isn't dying */ if (ExAcquireRundownProtection(&Process->RundownProtect)) { /* Lock it */ KeEnterCriticalRegion(); ExAcquirePushLockShared(&Process->ProcessLock); /* Call Ke to do the work */ KeSetAffinityProcess(&Process->Pcb, ValidAffinity); /* Release the lock and rundown */ ExReleasePushLockShared(&Process->ProcessLock); KeLeaveCriticalRegion(); ExReleaseRundownProtection(&Process->RundownProtect); /* Set success code */ Status = STATUS_SUCCESS; } else { /* Avoid race conditions */ Status = STATUS_PROCESS_IS_TERMINATING; } break; /* Priority Boosting status */ case ProcessPriorityBoost: /* Validate input length */ if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { DisableBoost = *(PBOOLEAN)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Break = 0; Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Make sure the process isn't dying */ if (ExAcquireRundownProtection(&Process->RundownProtect)) { /* Lock it */ KeEnterCriticalRegion(); ExAcquirePushLockShared(&Process->ProcessLock); /* Call Ke to do the work */ KeSetDisableBoostProcess(&Process->Pcb, DisableBoost); /* Loop the threads too */ for (Next = Process->ThreadListHead.Flink; Next != &Process->ThreadListHead; Next = Next->Flink) { /* Call Ke for the thread */ Thread = CONTAINING_RECORD(Next, ETHREAD, ThreadListEntry); KeSetDisableBoostThread(&Thread->Tcb, DisableBoost); } /* Release the lock and rundown */ ExReleasePushLockShared(&Process->ProcessLock); KeLeaveCriticalRegion(); ExReleaseRundownProtection(&Process->RundownProtect); /* Set success code */ Status = STATUS_SUCCESS; } else { /* Avoid race conditions */ Status = STATUS_PROCESS_IS_TERMINATING; } break; case ProcessDebugFlags: /* Check buffer length */ if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { DebugFlags = *(PULONG)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Set the mode */ if (DebugFlags & ~1) { Status = STATUS_INVALID_PARAMETER; } else { if (DebugFlags & 1) { PspClearProcessFlag(Process, PSF_NO_DEBUG_INHERIT_BIT); } else { PspSetProcessFlag(Process, PSF_NO_DEBUG_INHERIT_BIT); } } /* Done */ Status = STATUS_SUCCESS; break; case ProcessEnableAlignmentFaultFixup: /* Check buffer length */ if (ProcessInformationLength != sizeof(BOOLEAN)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { EnableFixup = *(PULONG)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Set the mode */ if (EnableFixup) { Process->DefaultHardErrorProcessing |= SEM_NOALIGNMENTFAULTEXCEPT; } else { Process->DefaultHardErrorProcessing &= ~SEM_NOALIGNMENTFAULTEXCEPT; } /* Call Ke for the update */ KeSetAutoAlignmentProcess(&Process->Pcb, FALSE); Status = STATUS_SUCCESS; break; case ProcessUserModeIOPL: /* Only TCB can do this */ if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode)) { /* We don't hold the privilege, bail out */ DPRINT1("Need TCB to set IOPL\n"); Status = STATUS_PRIVILEGE_NOT_HELD; break; } /* Only supported on x86 */ #if defined (_X86_) Ke386SetIOPL(); #elif defined(_M_AMD64) /* On x64 this function isn't implemented. On Windows 2003 it returns success. On Vista+ it returns STATUS_NOT_IMPLEMENTED. */ if ((ExGetPreviousMode() != KernelMode) && (RtlRosGetAppcompatVersion() > _WIN32_WINNT_WS03)) { Status = STATUS_NOT_IMPLEMENTED; } #else Status = STATUS_NOT_IMPLEMENTED; #endif /* Done */ break; case ProcessExecuteFlags: /* Check buffer length */ if (ProcessInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } if (ProcessHandle != NtCurrentProcess()) { Status = STATUS_INVALID_PARAMETER; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { NoExecute = *(PULONG)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Call Mm for the update */ Status = MmSetExecuteOptions(NoExecute); break; case ProcessDeviceMap: /* Check buffer length */ if (ProcessInformationLength != sizeof(HANDLE)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Capture the handle */ DirectoryHandle = *(PHANDLE)ProcessInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Call Ob to set the device map */ Status = ObSetDeviceMap(Process, DirectoryHandle); break; /* We currently don't implement any of these */ case ProcessLdtInformation: case ProcessLdtSize: case ProcessIoPortHandlers: DPRINT1("VDM/16-bit Request not implemented: %lx\n", ProcessInformationClass); Status = STATUS_NOT_IMPLEMENTED; break; case ProcessQuotaLimits: Status = PspSetQuotaLimits(Process, 1, ProcessInformation, ProcessInformationLength, PreviousMode); break; case ProcessWorkingSetWatch: DPRINT1("WS watch not implemented\n"); Status = STATUS_NOT_IMPLEMENTED; break; case ProcessHandleTracing: DPRINT1("Handle tracing not implemented\n"); Status = STATUS_NOT_IMPLEMENTED; break; /* Anything else is invalid */ default: DPRINT1("Invalid Server 2003 Info Class: %lx\n", ProcessInformationClass); Status = STATUS_INVALID_INFO_CLASS; } /* Dereference and return status */ ObDereferenceObject(Process); return Status; } /* * @implemented */ NTSTATUS NTAPI NtSetInformationThread(IN HANDLE ThreadHandle, IN THREADINFOCLASS ThreadInformationClass, IN PVOID ThreadInformation, IN ULONG ThreadInformationLength) { PETHREAD Thread; KPROCESSOR_MODE PreviousMode = ExGetPreviousMode(); NTSTATUS Status; HANDLE TokenHandle = NULL; KPRIORITY Priority = 0; KAFFINITY Affinity = 0, CombinedAffinity; PVOID Address = NULL; PEPROCESS Process; ULONG_PTR DisableBoost = 0; ULONG_PTR IdealProcessor = 0; ULONG_PTR Break = 0; PTEB Teb; ULONG_PTR TlsIndex = 0; PVOID *ExpansionSlots; PETHREAD ProcThread; BOOLEAN HasPrivilege; PAGED_CODE(); /* Verify Information Class validity */ Status = DefaultSetInfoBufferCheck(ThreadInformationClass, PsThreadInfoClass, RTL_NUMBER_OF(PsThreadInfoClass), ThreadInformation, ThreadInformationLength, PreviousMode); if (!NT_SUCCESS(Status)) { DPRINT1("NtSetInformationThread(): Information verification class failed! (Status -> 0x%lx, ThreadInformationClass -> %lx)\n", Status, ThreadInformationClass); return Status; } /* Check what kind of information class this is */ switch (ThreadInformationClass) { /* Thread priority */ case ThreadPriority: /* Check buffer length */ if (ThreadInformationLength != sizeof(KPRIORITY)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Get the priority */ Priority = *(PLONG)ThreadInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Validate it */ if ((Priority > HIGH_PRIORITY) || (Priority <= LOW_PRIORITY)) { /* Fail */ Status = STATUS_INVALID_PARAMETER; break; } /* Check for the required privilege */ if (Priority >= LOW_REALTIME_PRIORITY) { HasPrivilege = SeCheckPrivilegedObject(SeIncreaseBasePriorityPrivilege, ThreadHandle, THREAD_SET_INFORMATION, PreviousMode); if (!HasPrivilege) { DPRINT1("Privilege to change priority to %lx lacking\n", Priority); return STATUS_PRIVILEGE_NOT_HELD; } } /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_INFORMATION, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Set the priority */ KeSetPriorityThread(&Thread->Tcb, Priority); /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadBasePriority: /* Check buffer length */ if (ThreadInformationLength != sizeof(LONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Get the priority */ Priority = *(PLONG)ThreadInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Validate it */ if ((Priority > THREAD_BASE_PRIORITY_MAX) || (Priority < THREAD_BASE_PRIORITY_MIN)) { /* These ones are OK */ if ((Priority != THREAD_BASE_PRIORITY_LOWRT + 1) && (Priority != THREAD_BASE_PRIORITY_IDLE - 1)) { /* Check if the process is real time */ if (PsGetCurrentProcess()->PriorityClass != PROCESS_PRIORITY_CLASS_REALTIME) { /* It isn't, fail */ Status = STATUS_INVALID_PARAMETER; break; } } } /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_INFORMATION, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Set the base priority */ KeSetBasePriorityThread(&Thread->Tcb, Priority); /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadAffinityMask: /* Check buffer length */ if (ThreadInformationLength != sizeof(ULONG_PTR)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Get the priority */ Affinity = *(PULONG_PTR)ThreadInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Validate it */ if (!Affinity) { /* Fail */ Status = STATUS_INVALID_PARAMETER; break; } /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_INFORMATION, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Get the process */ Process = Thread->ThreadsProcess; /* Try to acquire rundown */ if (ExAcquireRundownProtection(&Process->RundownProtect)) { /* Lock it */ KeEnterCriticalRegion(); ExAcquirePushLockShared(&Process->ProcessLock); /* Combine masks */ CombinedAffinity = Affinity & Process->Pcb.Affinity; if (CombinedAffinity != Affinity) { /* Fail */ Status = STATUS_INVALID_PARAMETER; } else { /* Set the affinity */ KeSetAffinityThread(&Thread->Tcb, CombinedAffinity); } /* Release the lock and rundown */ ExReleasePushLockShared(&Process->ProcessLock); KeLeaveCriticalRegion(); ExReleaseRundownProtection(&Process->RundownProtect); } else { /* Too late */ Status = STATUS_PROCESS_IS_TERMINATING; } /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadImpersonationToken: /* Check buffer length */ if (ThreadInformationLength != sizeof(HANDLE)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Save the token handle */ TokenHandle = *(PHANDLE)ThreadInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_THREAD_TOKEN, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Assign the actual token */ Status = PsAssignImpersonationToken(Thread, TokenHandle); /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadQuerySetWin32StartAddress: /* Check buffer length */ if (ThreadInformationLength != sizeof(ULONG_PTR)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Get the priority */ Address = *(PVOID*)ThreadInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_INFORMATION, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Set the address */ Thread->Win32StartAddress = Address; /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadIdealProcessor: /* Check buffer length */ if (ThreadInformationLength != sizeof(ULONG_PTR)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Get the priority */ IdealProcessor = *(PULONG_PTR)ThreadInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Validate it */ if (IdealProcessor > MAXIMUM_PROCESSORS) { /* Fail */ Status = STATUS_INVALID_PARAMETER; break; } /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_INFORMATION, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Set the ideal */ Status = KeSetIdealProcessorThread(&Thread->Tcb, (CCHAR)IdealProcessor); /* Get the TEB and protect the thread */ Teb = Thread->Tcb.Teb; if ((Teb) && (ExAcquireRundownProtection(&Thread->RundownProtect))) { /* Save the ideal processor */ Teb->IdealProcessor = Thread->Tcb.IdealProcessor; /* Release rundown protection */ ExReleaseRundownProtection(&Thread->RundownProtect); } /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadPriorityBoost: /* Check buffer length */ if (ThreadInformationLength != sizeof(ULONG_PTR)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Get the priority */ DisableBoost = *(PULONG_PTR)ThreadInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_INFORMATION, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Call the kernel */ KeSetDisableBoostThread(&Thread->Tcb, (BOOLEAN)DisableBoost); /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadZeroTlsCell: /* Check buffer length */ if (ThreadInformationLength != sizeof(ULONG_PTR)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Use SEH for capture */ _SEH2_TRY { /* Get the priority */ TlsIndex = *(PULONG_PTR)ThreadInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get the exception code */ Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_INFORMATION, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* This is only valid for the current thread */ if (Thread != PsGetCurrentThread()) { /* Fail */ Status = STATUS_INVALID_PARAMETER; ObDereferenceObject(Thread); break; } /* Get the process */ Process = Thread->ThreadsProcess; /* Loop the threads */ ProcThread = PsGetNextProcessThread(Process, NULL); while (ProcThread) { /* Acquire rundown */ if (ExAcquireRundownProtection(&ProcThread->RundownProtect)) { /* Get the TEB */ Teb = ProcThread->Tcb.Teb; if (Teb) { /* Check if we're in the expansion range */ if (TlsIndex > TLS_MINIMUM_AVAILABLE - 1) { if (TlsIndex < (TLS_MINIMUM_AVAILABLE + TLS_EXPANSION_SLOTS) - 1) { /* Check if we have expansion slots */ ExpansionSlots = Teb->TlsExpansionSlots; if (ExpansionSlots) { /* Clear the index */ ExpansionSlots[TlsIndex - TLS_MINIMUM_AVAILABLE] = 0; } } } else { /* Clear the index */ Teb->TlsSlots[TlsIndex] = NULL; } } /* Release rundown */ ExReleaseRundownProtection(&ProcThread->RundownProtect); } /* Go to the next thread */ ProcThread = PsGetNextProcessThread(Process, ProcThread); } /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadBreakOnTermination: /* Check buffer length */ if (ThreadInformationLength != sizeof(ULONG)) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Enter SEH for direct buffer read */ _SEH2_TRY { Break = *(PULONG)ThreadInformation; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Break = 0; Status = _SEH2_GetExceptionCode(); _SEH2_YIELD(break); } _SEH2_END; /* Setting 'break on termination' requires the SeDebugPrivilege */ if (!SeSinglePrivilegeCheck(SeDebugPrivilege, PreviousMode)) { /* We don't hold the privilege, bail out */ Status = STATUS_PRIVILEGE_NOT_HELD; break; } /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_INFORMATION, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Set or clear the flag */ if (Break) { PspSetCrossThreadFlag(Thread, CT_BREAK_ON_TERMINATION_BIT); } else { PspClearCrossThreadFlag(Thread, CT_BREAK_ON_TERMINATION_BIT); } /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadHideFromDebugger: /* Check buffer length */ if (ThreadInformationLength != 0) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the thread */ Status = ObReferenceObjectByHandle(ThreadHandle, THREAD_SET_INFORMATION, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Set the flag */ PspSetCrossThreadFlag(Thread, CT_HIDE_FROM_DEBUGGER_BIT); /* Dereference the thread */ ObDereferenceObject(Thread); break; default: /* We don't implement it yet */ DPRINT1("Not implemented: %d\n", ThreadInformationClass); Status = STATUS_NOT_IMPLEMENTED; } return Status; } /* * @implemented */ NTSTATUS NTAPI NtQueryInformationThread(IN HANDLE ThreadHandle, IN THREADINFOCLASS ThreadInformationClass, OUT PVOID ThreadInformation, IN ULONG ThreadInformationLength, OUT PULONG ReturnLength OPTIONAL) { PETHREAD Thread; KPROCESSOR_MODE PreviousMode = ExGetPreviousMode(); NTSTATUS Status; ULONG Access; ULONG Length = 0; PTHREAD_BASIC_INFORMATION ThreadBasicInfo = (PTHREAD_BASIC_INFORMATION)ThreadInformation; PKERNEL_USER_TIMES ThreadTime = (PKERNEL_USER_TIMES)ThreadInformation; KIRQL OldIrql; ULONG ThreadTerminated; PAGED_CODE(); /* Verify Information Class validity */ Status = DefaultQueryInfoBufferCheck(ThreadInformationClass, PsThreadInfoClass, RTL_NUMBER_OF(PsThreadInfoClass), ThreadInformation, ThreadInformationLength, ReturnLength, NULL, PreviousMode, FALSE); if (!NT_SUCCESS(Status)) { DPRINT1("NtQueryInformationThread(): Information verification class failed! (Status -> 0x%lx , ThreadInformationClass -> %lx)\n", Status, ThreadInformationClass); return Status; } /* Check what class this is */ Access = THREAD_QUERY_INFORMATION; /* Check what kind of information class this is */ switch (ThreadInformationClass) { /* Basic thread information */ case ThreadBasicInformation: /* Set return length */ Length = sizeof(THREAD_BASIC_INFORMATION); if (ThreadInformationLength != Length) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the process */ Status = ObReferenceObjectByHandle(ThreadHandle, Access, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Protect writes with SEH */ _SEH2_TRY { /* Write all the information from the ETHREAD/KTHREAD */ ThreadBasicInfo->ExitStatus = Thread->ExitStatus; ThreadBasicInfo->TebBaseAddress = (PVOID)Thread->Tcb.Teb; ThreadBasicInfo->ClientId = Thread->Cid; ThreadBasicInfo->AffinityMask = Thread->Tcb.Affinity; ThreadBasicInfo->Priority = Thread->Tcb.Priority; ThreadBasicInfo->BasePriority = KeQueryBasePriorityThread(&Thread->Tcb); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the thread */ ObDereferenceObject(Thread); break; /* Thread time information */ case ThreadTimes: /* Set the return length */ Length = sizeof(KERNEL_USER_TIMES); if (ThreadInformationLength != Length) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the process */ Status = ObReferenceObjectByHandle(ThreadHandle, Access, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Protect writes with SEH */ _SEH2_TRY { /* Copy time information from ETHREAD/KTHREAD */ ThreadTime->KernelTime.QuadPart = Thread->Tcb.KernelTime * KeMaximumIncrement; ThreadTime->UserTime.QuadPart = Thread->Tcb.UserTime * KeMaximumIncrement; ThreadTime->CreateTime = Thread->CreateTime; /* Exit time is in a union and only valid on actual exit! */ if (KeReadStateThread(&Thread->Tcb)) { ThreadTime->ExitTime = Thread->ExitTime; } else { ThreadTime->ExitTime.QuadPart = 0; } } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadQuerySetWin32StartAddress: /* Set the return length*/ Length = sizeof(PVOID); if (ThreadInformationLength != Length) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the process */ Status = ObReferenceObjectByHandle(ThreadHandle, Access, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Protect write with SEH */ _SEH2_TRY { /* Return the Win32 Start Address */ *(PVOID*)ThreadInformation = Thread->Win32StartAddress; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadPerformanceCount: /* Set the return length*/ Length = sizeof(LARGE_INTEGER); if (ThreadInformationLength != Length) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the process */ Status = ObReferenceObjectByHandle(ThreadHandle, Access, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Protect write with SEH */ _SEH2_TRY { /* FIXME */ (*(PLARGE_INTEGER)ThreadInformation).QuadPart = 0; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadAmILastThread: /* Set the return length*/ Length = sizeof(ULONG); if (ThreadInformationLength != Length) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the process */ Status = ObReferenceObjectByHandle(ThreadHandle, Access, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Protect write with SEH */ _SEH2_TRY { /* Return whether or not we are the last thread */ *(PULONG)ThreadInformation = ((Thread->ThreadsProcess-> ThreadListHead.Flink->Flink == &Thread->ThreadsProcess-> ThreadListHead) ? TRUE : FALSE); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadIsIoPending: /* Set the return length*/ Length = sizeof(ULONG); if (ThreadInformationLength != Length) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the process */ Status = ObReferenceObjectByHandle(ThreadHandle, Access, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Raise the IRQL to protect the IRP list */ KeRaiseIrql(APC_LEVEL, &OldIrql); /* Protect write with SEH */ _SEH2_TRY { /* Check if the IRP list is empty or not */ *(PULONG)ThreadInformation = !IsListEmpty(&Thread->IrpList); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Lower IRQL back */ KeLowerIrql(OldIrql); /* Dereference the thread */ ObDereferenceObject(Thread); break; /* LDT and GDT information */ case ThreadDescriptorTableEntry: #if defined(_X86_) /* Reference the process */ Status = ObReferenceObjectByHandle(ThreadHandle, Access, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; /* Call the worker routine */ Status = PspQueryDescriptorThread(Thread, ThreadInformation, ThreadInformationLength, ReturnLength); /* Dereference the thread */ ObDereferenceObject(Thread); #else /* Only implemented on x86 */ Status = STATUS_NOT_IMPLEMENTED; #endif break; case ThreadPriorityBoost: /* Set the return length*/ Length = sizeof(ULONG); if (ThreadInformationLength != Length) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the process */ Status = ObReferenceObjectByHandle(ThreadHandle, Access, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; _SEH2_TRY { *(PULONG)ThreadInformation = Thread->Tcb.DisableBoost ? 1 : 0; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the thread */ ObDereferenceObject(Thread); break; case ThreadIsTerminated: /* Set the return length*/ Length = sizeof(ThreadTerminated); if (ThreadInformationLength != Length) { Status = STATUS_INFO_LENGTH_MISMATCH; break; } /* Reference the process */ Status = ObReferenceObjectByHandle(ThreadHandle, Access, PsThreadType, PreviousMode, (PVOID*)&Thread, NULL); if (!NT_SUCCESS(Status)) break; ThreadTerminated = PsIsThreadTerminating(Thread); _SEH2_TRY { *(PULONG)ThreadInformation = ThreadTerminated ? 1 : 0; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { Status = _SEH2_GetExceptionCode(); } _SEH2_END; /* Dereference the thread */ ObDereferenceObject(Thread); break; /* Anything else */ default: /* Not yet implemented */ DPRINT1("Not implemented: %lx\n", ThreadInformationClass); Status = STATUS_NOT_IMPLEMENTED; } /* Protect write with SEH */ _SEH2_TRY { /* Check if caller wanted return length */ if (ReturnLength) *ReturnLength = Length; } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { /* Get exception code */ Status = _SEH2_GetExceptionCode(); } _SEH2_END; return Status; } /* EOF */