[ros-diffs] [weiden] 13576: 1. a few previous mode fixes

1. a few previous mode fixes
2. implemented NtSetDefaultHardErrorPort() with help of pseudo code from
windowsitlibrary.com
Modified: trunk/reactos/ntoskrnl/ke/alert.c
Modified: trunk/reactos/ntoskrnl/ke/apc.c
Modified: trunk/reactos/ntoskrnl/ke/error.c
  _____
Modified: trunk/reactos/ntoskrnl/ke/alert.c
--- trunk/reactos/ntoskrnl/ke/alert.c   2005-02-14 18:45:17 UTC (rev
13575)
+++ trunk/reactos/ntoskrnl/ke/alert.c   2005-02-14 21:00:05 UTC (rev
13576)
@@ -107,13 +107,16 @@
 NTSTATUS STDCALL
 NtAlertThread (IN HANDLE ThreadHandle)
 {
+   KPROCESSOR_MODE PreviousMode;
    PETHREAD Thread;
    NTSTATUS Status;
+
+   PreviousMode = ExGetPreviousMode();
    Status = ObReferenceObjectByHandle(ThreadHandle,
                   THREAD_SUSPEND_RESUME,
                   PsThreadType,
-                  ExGetPreviousMode(),
+                  PreviousMode,
                   (PVOID*)&Thread,
                   NULL);
    if (!NT_SUCCESS(Status))
@@ -125,7 +128,7 @@
     * ZwAlertThread was called?
     * -Gunnar
     */
-   KeAlertThread((PKTHREAD)Thread, UserMode);
+   KeAlertThread((PKTHREAD)Thread, PreviousMode);
    ObDereferenceObject(Thread);
    return(STATUS_SUCCESS);
  _____
Modified: trunk/reactos/ntoskrnl/ke/apc.c
--- trunk/reactos/ntoskrnl/ke/apc.c     2005-02-14 18:45:17 UTC (rev
13575)
+++ trunk/reactos/ntoskrnl/ke/apc.c     2005-02-14 21:00:05 UTC (rev
13576)
@@ -1,4 +1,4 @@
-/* $Id:$
+/* $Id$
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -517,13 +517,16 @@
        PKAPC Apc;
        PETHREAD Thread;
+       KPROCESSOR_MODE PreviousMode;
        NTSTATUS Status;
+
+       PreviousMode = ExGetPreviousMode();
        /* Get ETHREAD from Handle */
        Status = ObReferenceObjectByHandle(ThreadHandle,
                                           THREAD_SET_CONTEXT,
                                           PsThreadType,
-                                          KeGetPreviousMode(),
+                                          PreviousMode,
                                           (PVOID)&Thread,
                                           NULL);
@@ -552,7 +555,7 @@
                        KiFreeApcRoutine,
                        NULL,
                        ApcRoutine,
-                       UserMode,
+                       PreviousMode,
                        NormalContext);
        if (!KeInsertQueueApc(Apc, SystemArgument1, SystemArgument2,
IO_NO_INCREMENT)) {
                Status = STATUS_UNSUCCESSFUL;
  _____
Modified: trunk/reactos/ntoskrnl/ke/error.c
--- trunk/reactos/ntoskrnl/ke/error.c   2005-02-14 18:45:17 UTC (rev
13575)
+++ trunk/reactos/ntoskrnl/ke/error.c   2005-02-14 21:00:05 UTC (rev
13576)
@@ -1,4 +1,4 @@
-/* $Id:$
+/* $Id$
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -15,6 +15,10 @@
 /* FUNCTIONS
***************************************************************/
+BOOLEAN ExReadyForErrors = FALSE;
+PEPORT ExpDefaultErrorPort = NULL;
+PEPROCESS ExpDefaultErrorPortProcess = NULL;
+
 /*
  * @unimplemented
  */
@@ -54,8 +58,41 @@
 NTSTATUS STDCALL
 NtSetDefaultHardErrorPort(IN HANDLE PortHandle)
 {
-   UNIMPLEMENTED;
-   return(STATUS_NOT_IMPLEMENTED);
+  KPROCESSOR_MODE PreviousMode;
+  NTSTATUS Status;
+
+  PreviousMode = ExGetPreviousMode();
+
+  if(!SeSinglePrivilegeCheck(SeTcbPrivilege,
+                             PreviousMode))
+  {
+    DPRINT1("NtSetDefaultHardErrorPort: Caller requires the
SeTcbPrivilege privilege!\n");
+    return STATUS_PRIVILEGE_NOT_HELD;
+  }
+
+  /* serialization shouldn't be required here as it usually is just
called once
+     during startup */
+
+  if(!ExReadyForErrors)
+  {
+    Status = ObReferenceObjectByHandle(PortHandle,
+                                       0,
+                                       LpcPortObjectType,
+                                       PreviousMode,
+                                       (PVOID*)&ExpDefaultErrorPort,
+                                       NULL);
+    if(NT_SUCCESS(Status))
+    {
+      ExpDefaultErrorPortProcess = PsGetCurrentProcess();
+      ExReadyForErrors = TRUE;
+    }
+  }
+  else
+  {
+    Status = STATUS_UNSUCCESSFUL;
+  }
+
+  return Status;
 }
 /* EOF */