[sginsberg] 36021: - Check for "!= KernelMode" instead of "== UserMode" - Use sizeof(ULONG) instead of "4" - Add some missing comments

Author: sginsberg
Date: Sun Sep  7 04:25:31 2008
New Revision: 36021

URL: http://svn.reactos.org/svn/reactos?rev=36021&view=rev
Log:
- Check for "!= KernelMode" instead of "== UserMode"
- Use sizeof(ULONG) instead of "4"
- Add some missing comments

Modified:
    trunk/reactos/ntoskrnl/config/ntapi.c

Modified: trunk/reactos/ntoskrnl/config/ntapi.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/config/ntapi.c?rev...
==============================================================================
--- trunk/reactos/ntoskrnl/config/ntapi.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/config/ntapi.c [iso-8859-1] Sun Sep  7 04:25:31 2008
@@ -35,7 +35,7 @@
     DPRINT("NtCreateKey(OB name %wZ)\n", ObjectAttributes->ObjectName);

/* Check for user-mode caller */
-    if (PreviousMode == UserMode)
+    if (PreviousMode != KernelMode)
     {
         /* Prepare to probe parameters */
         _SEH_TRY
@@ -56,7 +56,9 @@
             *KeyHandle = NULL;

/* Probe object attributes */
-            ProbeForRead(ObjectAttributes, sizeof(OBJECT_ATTRIBUTES), 4);
+            ProbeForRead(ObjectAttributes,
+                         sizeof(OBJECT_ATTRIBUTES),
+                         sizeof(ULONG));
         }
         _SEH_HANDLE
         {
@@ -87,9 +89,8 @@

_SEH_TRY
     {
+        /* Return data to user */
         if (NT_SUCCESS(Status)) *KeyHandle = Handle;
-
-        /* Return data to user */
         if (Disposition) *Disposition = ParseContext.Disposition;
     }
     _SEH_HANDLE
@@ -117,7 +118,7 @@
     DPRINT("NtOpenKey(OB 0x%wZ)\n", ObjectAttributes->ObjectName);

/* Check for user-mode caller */
-    if (PreviousMode == UserMode)
+    if (PreviousMode != KernelMode)
     {
         /* Prepare to probe parameters */
         _SEH_TRY
@@ -127,7 +128,9 @@
             *KeyHandle = NULL;

/* Probe object attributes */
-            ProbeForRead(ObjectAttributes, sizeof(OBJECT_ATTRIBUTES), 4);
+            ProbeForRead(ObjectAttributes,
+                         sizeof(OBJECT_ATTRIBUTES),
+                         sizeof(ULONG));
         }
         _SEH_HANDLE
         {
@@ -147,10 +150,12 @@
                                 &ParseContext,
                                 &Handle);

+    /* Only do this if we succeeded */
     if (NT_SUCCESS(Status))
     {
         _SEH_TRY
         {
+            /* Return the handle to caller */
             *KeyHandle = Handle;
         }
         _SEH_HANDLE