[ion] 55731: [NTOSKRNL]: NtQuerySystemInformation(SystemProcessInformation) should skip zombie processes, and it should use the KTHREAD ThreadListEntry, not the ETHREAD ThreadListEntry. Fixes winet...

Author: ion
Date: Mon Feb 20 06:35:05 2012
New Revision: 55731

URL: http://svn.reactos.org/svn/reactos?rev=55731&view=rev
Log:
[NTOSKRNL]: NtQuerySystemInformation(SystemProcessInformation) should skip zombie processes, and it should use the KTHREAD ThreadListEntry, not the ETHREAD ThreadListEntry. Fixes winetest since Idle Threads are int he former, not the latter (verified and Windows does this too).

Modified:
    trunk/reactos/ntoskrnl/ex/sysinfo.c

Modified: trunk/reactos/ntoskrnl/ex/sysinfo.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ex/sysinfo.c?rev=5...
==============================================================================
--- trunk/reactos/ntoskrnl/ex/sysinfo.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/ex/sysinfo.c [iso-8859-1] Mon Feb 20 06:35:05 2012
@@ -711,7 +711,9 @@

/* Check for overflow */
         if (Size < sizeof(SYSTEM_PROCESS_INFORMATION))
+        {
             Overflow = TRUE;
+        }

/* Zero user's buffer */
         if (!Overflow) RtlZeroMemory(Spi, Size);
@@ -719,14 +721,25 @@
         SystemProcess = PsIdleProcess;
         Process = SystemProcess;
         Current = (PUCHAR) Spi;
+        CurrentSize = 0;
+        ImageNameMaximumLength = 0;

do
         {
             SpiCurrent = (PSYSTEM_PROCESS_INFORMATION) Current;
+            
+            if ((Process->ProcessExiting) &&
+                (Process->Pcb.Header.SignalState) &&
+                !(Process->ActiveThreads) &&
+                (IsListEmpty(&Process->Pcb.ThreadListHead)))
+            {
+                DPRINT1("Skipping zombie\n");
+                goto Skip;
+            }

ThreadsCount = 0;
-            CurrentEntry = Process->ThreadListHead.Flink;
-            while (CurrentEntry != &Process->ThreadListHead)
+            CurrentEntry = Process->Pcb.ThreadListHead.Flink;
+            while (CurrentEntry != &Process->Pcb.ThreadListHead)
             {
                 ThreadsCount++;
                 CurrentEntry = CurrentEntry->Flink;
@@ -770,7 +783,9 @@

/* Check for overflow */
             if (TotalSize > Size)
+            {
                 Overflow = TRUE;
+            }

/* Fill system information */
             if (!Overflow)
@@ -821,10 +836,10 @@
                 SpiCurrent->PrivatePageCount = Process->CommitCharge;
                 ThreadInfo = (PSYSTEM_THREAD_INFORMATION)(SpiCurrent + 1);

-                CurrentEntry = Process->ThreadListHead.Flink;
-                while (CurrentEntry != &Process->ThreadListHead)
+                CurrentEntry = Process->Pcb.ThreadListHead.Flink;
+                while (CurrentEntry != &Process->Pcb.ThreadListHead)
                 {
-                    CurrentThread = CONTAINING_RECORD(CurrentEntry, ETHREAD,
+                    CurrentThread = (PETHREAD)CONTAINING_RECORD(CurrentEntry, KTHREAD,
                         ThreadListEntry);

ThreadInfo->KernelTime.QuadPart = UInt32x32To64(CurrentThread->Tcb.KernelTime, KeMaximumIncrement);
@@ -850,6 +865,7 @@
             }

/* Handle idle process entry */
+Skip:
             if (Process == PsIdleProcess) Process = NULL;

Process = PsGetNextProcess(Process);