[NTOS]: Fix Implementation of BreakOnTermination -- Process Flags should be accessed...
[reactos.git] / reactos / ntoskrnl / ps / query.c
index 2ee085d..342c818 100644 (file)
@@ -5,6 +5,7 @@
  * PURPOSE:         Process Manager: Thread/Process Query/Set Information
  * PROGRAMMERS:     Alex Ionescu (alex.ionescu@reactos.org)
  *                  Thomas Weidenmueller (w3seek@reactos.org)
+ *                  Eric Kohl
  */
 
 /* INCLUDES ******************************************************************/
@@ -63,45 +64,47 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
 {
     PEPROCESS Process;
     KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
-    NTSTATUS Status = STATUS_SUCCESS;
+    NTSTATUS Status;
     ULONG Length = 0;
     PPROCESS_BASIC_INFORMATION ProcessBasicInfo =
         (PPROCESS_BASIC_INFORMATION)ProcessInformation;
     PKERNEL_USER_TIMES ProcessTime = (PKERNEL_USER_TIMES)ProcessInformation;
+    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;
     PROCESS_DEVICEMAP_INFORMATION DeviceMap;
     PUNICODE_STRING ImageName;
     ULONG Cookie;
     PAGED_CODE();
 
-    /* Check validity of Information Class */
-#if 0
-    Status = DefaultQueryInfoBufferCheck(ProcessInformationClass,
-                                         PsProcessInfoClass,
-                                         RTL_NUMBER_OF(PsProcessInfoClass),
-                                         ProcessInformation,
-                                         ProcessInformationLength,
-                                         ReturnLength,
-                                         PreviousMode);
-    if (!NT_SUCCESS(Status)) return Status;
-#endif
-
-    /* Check if this isn't the cookie class */
-    if(ProcessInformationClass != ProcessCookie)
+    /* Check for user-mode caller */
+    if (PreviousMode != KernelMode)
     {
-        /* Reference the process */
-        Status = ObReferenceObjectByHandle(ProcessHandle,
-                                           PROCESS_QUERY_INFORMATION,
-                                           PsProcessType,
-                                           PreviousMode,
-                                           (PVOID*)&Process,
-                                           NULL);
-        if (!NT_SUCCESS(Status)) return Status;
+        /* Prepare to probe parameters */
+        _SEH2_TRY
+        {
+            /* Probe the buffer */
+            ProbeForWrite(ProcessInformation,
+                          ProcessInformationLength,
+                          sizeof(ULONG));
+
+            /* Probe the return length if required */
+            if (ReturnLength) ProbeForWriteUlong(ReturnLength);
+        }
+        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+        {
+            /* Return the exception code */
+            _SEH2_YIELD(return _SEH2_GetExceptionCode());
+        }
+        _SEH2_END;
     }
-    else if(ProcessHandle != NtCurrentProcess())
+
+    if((ProcessInformationClass == ProcessCookie) &&
+        (ProcessHandle != NtCurrentProcess()))
     {
         /*
          * Retreiving the process cookie is only allowed for the calling process
@@ -125,6 +128,16 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 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;
+
             /* Protect writes with SEH */
             _SEH2_TRY
             {
@@ -145,10 +158,75 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             break;
 
-        /* Quote limits and I/O Counters: not implemented */
+        /* Process quota limits */
         case ProcessQuotaLimits:
+
+            Length = sizeof(QUOTA_LIMITS);
+            if (ProcessInformationLength != Length)
+            {
+                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;
+
+            /* 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:
 
             Length = sizeof(IO_COUNTERS);
@@ -158,7 +236,35 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 break;
             }
 
-            Status = STATUS_NOT_IMPLEMENTED;
+            /* Reference the process */
+            Status = ObReferenceObjectByHandle(ProcessHandle,
+                                               PROCESS_QUERY_INFORMATION,
+                                               PsProcessType,
+                                               PreviousMode,
+                                               (PVOID*)&Process,
+                                               NULL);
+            if (!NT_SUCCESS(Status)) break;
+
+            _SEH2_TRY
+            {
+                IoCounters->ReadOperationCount = Process->ReadOperationCount.QuadPart;
+                IoCounters->ReadTransferCount = Process->ReadTransferCount.QuadPart;
+                IoCounters->WriteOperationCount = Process->WriteOperationCount.QuadPart;
+                IoCounters->WriteTransferCount = Process->WriteTransferCount.QuadPart;
+                IoCounters->OtherOperationCount = Process->OtherOperationCount.QuadPart;
+                IoCounters->OtherTransferCount = Process->OtherTransferCount.QuadPart;
+            }
+            _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 */
@@ -173,6 +279,15 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 break;
             }
 
+            /* 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
             {
@@ -190,6 +305,9 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             break;
 
         /* Process Debug Port */
@@ -203,6 +321,16 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 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;
+
             /* Protect write with SEH */
             _SEH2_TRY
             {
@@ -216,12 +344,29 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             break;
 
         /* LDT, WS and VDM Information: not implemented */
         case ProcessLdtInformation:
         case ProcessWorkingSetWatch:
         case ProcessWx86Information:
+
+            /* Reference the process */
+            Status = ObReferenceObjectByHandle(ProcessHandle,
+                                               PROCESS_QUERY_INFORMATION,
+                                               PsProcessType,
+                                               PreviousMode,
+                                               (PVOID*)&Process,
+                                               NULL);
+            if (!NT_SUCCESS(Status)) break;
+
+            DPRINT1("Not implemented: %lx\n", ProcessInformationClass);
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             Status = STATUS_NOT_IMPLEMENTED;
             break;
 
@@ -236,8 +381,17 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 break;
             }
 
+            /* 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 = ObpGetHandleCountByHandleTable(Process->ObjectTable);
+            HandleCount = ObGetProcessHandleCount(Process);
 
             /* Protect write in SEH */
             _SEH2_TRY
@@ -251,6 +405,9 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             break;
 
         /* Session ID for the process */
@@ -264,6 +421,16 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 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
             {
@@ -276,10 +443,36 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             break;
 
         /* WOW64: Not implemented */
         case ProcessWow64Information:
+
+            /* Set the return length */
+            Length = sizeof(ULONG_PTR);
+
+            if (ProcessInformationLength != Length)
+            {
+                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;
+
+            DPRINT1("Not implemented: ProcessWow64Information\n");
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             Status = STATUS_NOT_IMPLEMENTED;
             break;
 
@@ -295,6 +488,15 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 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
             {
@@ -318,6 +520,9 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             break;
 
         /* Hard Error Processing Mode */
@@ -331,6 +536,16 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 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 writing back data */
             _SEH2_TRY
             {
@@ -344,6 +559,9 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             break;
 
         /* Priority Boosting status */
@@ -357,6 +575,16 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 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 writing back data */
             _SEH2_TRY
             {
@@ -370,6 +598,9 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             break;
 
         /* DOS Device Map */
@@ -383,6 +614,16 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 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;
+
             /* Query the device map information */
             ObQueryDeviceMapInformation(Process, &DeviceMap);
 
@@ -397,24 +638,38 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
+
+            /* Dereference the process */
+            ObDereferenceObject(Process);
             break;
 
         /* Priority class */
         case ProcessPriorityClass:
 
             /* Set the return length*/
-            Length = sizeof(USHORT);
+            Length = sizeof(PROCESS_PRIORITY_CLASS);
 
             if (ProcessInformationLength != Length)
             {
                 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 writing back data */
             _SEH2_TRY
             {
                 /* Return current priority class */
-                *(PUSHORT)ProcessInformation = Process->PriorityClass;
+                PsPriorityClass->PriorityClass = Process->PriorityClass;
+                PsPriorityClass->Foreground = FALSE;
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {
@@ -422,10 +677,22 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 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))
@@ -465,6 +732,44 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 /* Free the image path */
                 ExFreePool(ImageName);
             }
+            /* Dereference the process */
+            ObDereferenceObject(Process);
+            break;
+
+        case ProcessBreakOnTermination:
+
+            /* Set the return length*/
+            Length = sizeof(ULONG);
+            if (ProcessInformationLength != Length)
+            {
+                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 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 */
@@ -495,6 +800,9 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                 Length = sizeof(ULONG);
             }
 
+            /* Indicate success */
+            Status = STATUS_SUCCESS;
+
             /* Enter SEH to protect write */
             _SEH2_TRY
             {
@@ -521,6 +829,7 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
         case ProcessAffinityMask:
         case ProcessForegroundInformation:
         default:
+            DPRINT1("Unsupported or unimplemented: %lx\n", ProcessInformationClass);
             Status = STATUS_INVALID_INFO_CLASS;
     }
 
@@ -537,8 +846,6 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
     }
     _SEH2_END;
 
-    /* If we referenced the process, dereference it */
-    if(ProcessInformationClass != ProcessCookie) ObDereferenceObject(Process);
     return Status;
 }
 
@@ -559,7 +866,9 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
     HANDLE PortHandle = NULL;
     HANDLE TokenHandle = NULL;
     PROCESS_SESSION_INFORMATION SessionInfo = {0};
+    PROCESS_PRIORITY_CLASS PriorityClass = {0};
     PVOID ExceptionPort;
+    ULONG Break;
     PAGED_CODE();
 
     /* Verify Information Class validity */
@@ -598,16 +907,16 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
     /* Check what kind of information class this is */
     switch (ProcessInformationClass)
     {
-        /* Quotas and priorities: not implemented */
-        case ProcessQuotaLimits:
-        case ProcessBasePriority:
-        case ProcessRaisePriority:
-            Status = STATUS_NOT_IMPLEMENTED;
-            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
             {
@@ -618,9 +927,9 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Get the LPC Port */
             Status = ObReferenceObjectByHandle(PortHandle,
@@ -645,6 +954,13 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
         /* 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
             {
@@ -656,9 +972,9 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Assign the actual token */
             Status = PspSetPrimaryToken(Process, TokenHandle, NULL);
@@ -667,6 +983,13 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
         /* 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
             {
@@ -685,6 +1008,13 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
         /* 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
             {
@@ -695,9 +1025,9 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Setting the session id requires the SeTcbPrivilege */
             if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode))
@@ -744,8 +1074,160 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
             //PsUnlockProcess(Process);
             break;
 
-        /* Priority class: HACK! */
         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;
+            }
+
+            /* TODO: Check privileges */
+
+            /* 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 ? PsProcessPriorityBackground :
+                                        PsProcessPriorityForeground);
+
+            Status = STATUS_SUCCESS;
+            break;
+
+        case ProcessQuotaLimits:
+
+            /* Check buffer length */
+            if (ProcessInformationLength != sizeof(QUOTA_LIMITS))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
+            DPRINT1("Not implemented: ProcessQuotaLimits\n");
+            Status = STATUS_NOT_IMPLEMENTED;
+            break;
+
+        case ProcessBasePriority:
+
+            /* Check buffer length */
+            if (ProcessInformationLength != sizeof(KPRIORITY))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
+            DPRINT1("Not implemented: ProcessBasePriority\n");
+            Status = STATUS_NOT_IMPLEMENTED;
+            break;
+
+        case ProcessRaisePriority:
+
+            /* Check buffer length */
+            if (ProcessInformationLength != sizeof(ULONG))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
+            DPRINT1("Not implemented: ProcessRaisePriority\n");
+            Status = STATUS_NOT_IMPLEMENTED;
+            break;
+
+        case ProcessWx86Information:
+
+            /* Check buffer length */
+            if (ProcessInformationLength != sizeof(HANDLE))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
+            DPRINT1("Not implemented: ProcessWx86Information\n");
+            Status = STATUS_NOT_IMPLEMENTED;
+            break;
+
+        case ProcessDebugPort:
+
+            /* Check buffer length */
+            if (ProcessInformationLength != sizeof(HANDLE))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
+            DPRINT1("Not implemented: ProcessDebugPort\n");
+            Status = STATUS_NOT_IMPLEMENTED;
+            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))
+            {
+                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;
 
         /* We currently don't implement any of these */
@@ -756,6 +1238,7 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
         case ProcessUserModeIOPL:
         case ProcessEnableAlignmentFaultFixup:
         case ProcessAffinityMask:
+            DPRINT1("Not implemented: %lx\n", ProcessInformationClass);
             Status = STATUS_NOT_IMPLEMENTED;
             break;
 
@@ -764,11 +1247,10 @@ NtSetInformationProcess(IN HANDLE ProcessHandle,
         case ProcessIoCounters:
         case ProcessTimes:
         case ProcessPooledUsageAndLimits:
-        case ProcessWx86Information:
         case ProcessHandleCount:
         case ProcessWow64Information:
-        case ProcessDebugPort:
         default:
+            DPRINT1("Unsupported or unimplemented: %lx\n", ProcessInformationClass);
             Status = STATUS_INVALID_INFO_CLASS;
     }
 
@@ -823,7 +1305,7 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
         Access = THREAD_SET_THREAD_TOKEN;
     }
 
-    /* Reference the process */
+    /* Reference the thread */
     Status = ObReferenceObjectByHandle(ThreadHandle,
                                        Access,
                                        PsThreadType,
@@ -838,6 +1320,13 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
         /* Thread priority */
         case ThreadPriority:
 
+            /* Check buffer length */
+            if (ThreadInformationLength != sizeof(KPRIORITY))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
             /* Use SEH for capture */
             _SEH2_TRY
             {
@@ -848,9 +1337,9 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Validate it */
             if ((Priority > HIGH_PRIORITY) ||
@@ -867,6 +1356,13 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadBasePriority:
 
+            /* Check buffer length */
+            if (ThreadInformationLength != sizeof(LONG))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
             /* Use SEH for capture */
             _SEH2_TRY
             {
@@ -877,9 +1373,9 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Validate it */
             if ((Priority > THREAD_BASE_PRIORITY_MAX) ||
@@ -906,6 +1402,13 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadAffinityMask:
 
+            /* Check buffer length */
+            if (ThreadInformationLength != sizeof(ULONG_PTR))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
             /* Use SEH for capture */
             _SEH2_TRY
             {
@@ -918,7 +1421,6 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
                 Status = _SEH2_GetExceptionCode();
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Validate it */
             if (!Affinity)
@@ -967,6 +1469,13 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadImpersonationToken:
 
+            /* Check buffer length */
+            if (ThreadInformationLength != sizeof(HANDLE))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
             /* Use SEH for capture */
             _SEH2_TRY
             {
@@ -977,9 +1486,9 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Assign the actual token */
             Status = PsAssignImpersonationToken(Thread, TokenHandle);
@@ -987,6 +1496,13 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadQuerySetWin32StartAddress:
 
+            /* Check buffer length */
+            if (ThreadInformationLength != sizeof(ULONG_PTR))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
             /* Use SEH for capture */
             _SEH2_TRY
             {
@@ -997,9 +1513,9 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Set the address */
             Thread->Win32StartAddress = Address;
@@ -1007,6 +1523,13 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadIdealProcessor:
 
+            /* Check buffer length */
+            if (ThreadInformationLength != sizeof(ULONG_PTR))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
             /* Use SEH for capture */
             _SEH2_TRY
             {
@@ -1017,9 +1540,9 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Validate it */
             if (IdealProcessor > MAXIMUM_PROCESSORS)
@@ -1048,6 +1571,13 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadPriorityBoost:
 
+            /* Check buffer length */
+            if (ThreadInformationLength != sizeof(ULONG_PTR))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
             /* Use SEH for capture */
             _SEH2_TRY
             {
@@ -1058,9 +1588,9 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* Call the kernel */
             KeSetDisableBoostThread(&Thread->Tcb, (BOOLEAN)DisableBoost);
@@ -1068,6 +1598,13 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadZeroTlsCell:
 
+            /* Check buffer length */
+            if (ThreadInformationLength != sizeof(ULONG_PTR))
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
+
             /* Use SEH for capture */
             _SEH2_TRY
             {
@@ -1078,9 +1615,9 @@ NtSetInformationThread(IN HANDLE ThreadHandle,
             {
                 /* Get the exception code */
                 Status = _SEH2_GetExceptionCode();
+                _SEH2_YIELD(break);
             }
             _SEH2_END;
-            if (!NT_SUCCESS(Status)) break;
 
             /* This is only valid for the current thread */
             if (Thread != PsGetCurrentThread())
@@ -1161,7 +1698,7 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
 {
     PETHREAD Thread;
     KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
-    NTSTATUS Status = STATUS_SUCCESS;
+    NTSTATUS Status;
     ULONG Access;
     ULONG Length = 0;
     PTHREAD_BASIC_INFORMATION ThreadBasicInfo =
@@ -1170,17 +1707,27 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
     KIRQL OldIrql;
     PAGED_CODE();
 
-    /* Verify Information Class validity */
-#if 0
-    Status = DefaultQueryInfoBufferCheck(ThreadInformationClass,
-                                         PsThreadInfoClass,
-                                         RTL_NUMBER_OF(PsThreadInfoClass),
-                                         ThreadInformation,
-                                         ThreadInformationLength,
-                                         ReturnLength,
-                                         PreviousMode);
-    if (!NT_SUCCESS(Status)) return Status;
-#endif
+    /* Check if we were called from user mode */
+    if (PreviousMode != KernelMode)
+    {
+        /* Enter SEH */
+        _SEH2_TRY
+        {
+            /* Probe the buffer */
+            ProbeForWrite(ThreadInformation,
+                          ThreadInformationLength,
+                          sizeof(ULONG));
+
+            /* Probe the return length if required */
+            if (ReturnLength) ProbeForWriteUlong(ReturnLength);
+        }
+        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+        {
+            /* Return the exception code */
+            _SEH2_YIELD(return _SEH2_GetExceptionCode());
+        }
+        _SEH2_END;
+    }
 
     /* Check what class this is */
     Access = THREAD_QUERY_INFORMATION;
@@ -1200,6 +1747,14 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
         /* Basic thread information */
         case ThreadBasicInformation:
 
+            /* Set return length */
+            Length = sizeof(THREAD_BASIC_INFORMATION);
+
+            if (ThreadInformationLength != Length)
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
             /* Protect writes with SEH */
             _SEH2_TRY
             {
@@ -1210,9 +1765,6 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
                 ThreadBasicInfo->AffinityMask = Thread->Tcb.Affinity;
                 ThreadBasicInfo->Priority = Thread->Tcb.Priority;
                 ThreadBasicInfo->BasePriority = KeQueryBasePriorityThread(&Thread->Tcb);
-
-                /* Set return length */
-                Length = sizeof(THREAD_BASIC_INFORMATION);
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {
@@ -1225,6 +1777,14 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
         /* Thread time information */
         case ThreadTimes:
 
+            /* Set the return length */
+            Length = sizeof(KERNEL_USER_TIMES);
+
+            if (ThreadInformationLength != Length)
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
             /* Protect writes with SEH */
             _SEH2_TRY
             {
@@ -1235,9 +1795,6 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
                                                  100000LL;
                 ThreadTime->CreateTime = Thread->CreateTime;
                 ThreadTime->ExitTime = Thread->ExitTime;
-
-                /* Set the return length */
-                Length = sizeof(KERNEL_USER_TIMES);
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {
@@ -1249,14 +1806,19 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadQuerySetWin32StartAddress:
 
+            /* Set the return length*/
+            Length = sizeof(PVOID);
+
+            if (ThreadInformationLength != Length)
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
             /* Protect write with SEH */
             _SEH2_TRY
             {
                 /* Return the Win32 Start Address */
                 *(PVOID*)ThreadInformation = Thread->Win32StartAddress;
-
-                /* Set the return length*/
-                Length = sizeof(PVOID);
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {
@@ -1268,14 +1830,19 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadPerformanceCount:
 
+            /* Set the return length*/
+            Length = sizeof(LARGE_INTEGER);
+
+            if (ThreadInformationLength != Length)
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
             /* Protect write with SEH */
             _SEH2_TRY
             {
                 /* FIXME */
                 (*(PLARGE_INTEGER)ThreadInformation).QuadPart = 0;
-
-                /* Set the return length*/
-                Length = sizeof(LARGE_INTEGER);
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {
@@ -1287,6 +1854,14 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadAmILastThread:
 
+            /* Set the return length*/
+            Length = sizeof(ULONG);
+
+            if (ThreadInformationLength != Length)
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
             /* Protect write with SEH */
             _SEH2_TRY
             {
@@ -1296,9 +1871,6 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
                                                &Thread->ThreadsProcess->
                                                ThreadListHead) ?
                                               TRUE : FALSE);
-
-                /* Set the return length*/
-                Length = sizeof(ULONG);
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {
@@ -1310,6 +1882,14 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
 
         case ThreadIsIoPending:
 
+            /* Set the return length*/
+            Length = sizeof(ULONG);
+
+            if (ThreadInformationLength != Length)
+            {
+                Status = STATUS_INFO_LENGTH_MISMATCH;
+                break;
+            }
             /* Raise the IRQL to protect the IRP list */
             KeRaiseIrql(APC_LEVEL, &OldIrql);
 
@@ -1318,9 +1898,6 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
             {
                 /* Check if the IRP list is empty or not */
                 *(PULONG)ThreadInformation = !IsListEmpty(&Thread->IrpList);
-
-                /* Set the return length*/
-                Length = sizeof(ULONG);
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {
@@ -1333,6 +1910,43 @@ NtQueryInformationThread(IN HANDLE ThreadHandle,
             KeLowerIrql(OldIrql);
             break;
 
+        /* LDT and GDT information */
+        case ThreadDescriptorTableEntry:
+
+#if defined(_X86_)
+            /* Call the worker routine */
+            Status = PspQueryDescriptorThread(Thread,
+                                              ThreadInformation,
+                                              ThreadInformationLength,
+                                              ReturnLength);
+#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;
+            }
+
+            _SEH2_TRY
+            {
+                *(PULONG)ThreadInformation = Thread->Tcb.DisableBoost ? 1 : 0;
+            }
+            _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+            {
+                Status = _SEH2_GetExceptionCode();
+            }
+            _SEH2_END;
+            break;
+
         /* Anything else */
         default: