[ros-diffs] [hbirr] 18679: Fixed the mapping for low alignment images.

Fixed the mapping for low alignment images.
Modified: trunk/reactos/ntoskrnl/mm/section.c
  _____

Modified: trunk/reactos/ntoskrnl/mm/section.c
--- trunk/reactos/ntoskrnl/mm/section.c	2005-10-22 15:10:03 UTC (rev
18678)
+++ trunk/reactos/ntoskrnl/mm/section.c	2005-10-22 15:11:55 UTC (rev
18679)
@@ -1747,7 +1747,7 @@

* memory area was mapped at an offset in the file which is page
aligned
        * then note this is a direct mapped page.
        */
-      if ((Offset + MemoryArea->Data.SectionData.ViewOffset %
PAGE_SIZE) == 0 &&
+      if (((Offset + Segment->FileOffset) % PAGE_SIZE) == 0 &&
             (Offset + PAGE_SIZE <= Segment->RawLength ||
!IsImageSection))
       {
          DirectMapped = TRUE;
@@ -2813,6 +2813,7 @@
    ULONG i;
    ULONG LastSegment;
    BOOLEAN Initialized;
+   PMM_SECTION_SEGMENT EffectiveSegment;

if (Flags & EXEFMT_LOAD_ASSUME_SEGMENTS_PAGE_ALIGNED)
    {
@@ -2822,11 +2823,10 @@

Initialized = FALSE;
    LastSegment = 0;
+   EffectiveSegment = &ImageSectionObject->Segments[LastSegment];

for ( i = 0; i < ImageSectionObject->NrSegments; ++ i )
    {
-      PMM_SECTION_SEGMENT EffectiveSegment =
&ImageSectionObject->Segments[LastSegment];
-
       /*
        * The first segment requires special handling
        */
@@ -2880,11 +2880,14 @@

EffectiveSegment =
&ImageSectionObject->Segments[LastSegment];

-            /*
-             * Copy the current segment. If necessary, the effective
segment
-             * will be expanded later
-             */
-            *EffectiveSegment = *Segment;
+            if (LastSegment != i)
+            {
+               /*
+                * Copy the current segment. If necessary, the effective
segment
+                * will be expanded later
+                */
+               *EffectiveSegment = *Segment;
+            }

/*
              * Page-align the virtual size. We know for sure the
virtual address
@@ -2937,7 +2940,7 @@
             /*
              * Extend the virtual size
              */
-            ASSERT(PAGE_ROUND_UP(Segment->VirtualAddress +
Segment->Length) > EndOfEffectiveSegment);
+            ASSERT(PAGE_ROUND_UP(Segment->VirtualAddress +
Segment->Length) >= EndOfEffectiveSegment);

EffectiveSegment->Length =
PAGE_ROUND_UP(Segment->VirtualAddress + Segment->Length) -

EffectiveSegment->VirtualAddress;
@@ -2981,6 +2984,7 @@
          }
       }
    }
+   ImageSectionObject->NrSegments = LastSegment + 1;

return TRUE;
 }