[ros-diffs] [fireball] 24769: Use Uint32x32To64() function instead of ULONG * ULONG. Fixes partition length truncation. See issue #1871 for more details.

Author: fireball
Date: Thu Nov 16 20:26:31 2006
New Revision: 24769

URL: http://svn.reactos.org/svn/reactos?rev=24769&view=rev
Log:
Use Uint32x32To64() function instead of ULONG * ULONG. Fixes partition length truncation.
See issue #1871 for more details.

Modified:
    trunk/reactos/ntoskrnl/fstub/disksup.c

Modified: trunk/reactos/ntoskrnl/fstub/disksup.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/fstub/disksup.c?r…
==============================================================================
--- trunk/reactos/ntoskrnl/fstub/disksup.c (original)
+++ trunk/reactos/ntoskrnl/fstub/disksup.c Thu Nov 16 20:26:31 2006
@@ -1583,7 +1583,8 @@
                 /* Get the starting offset */
                 PartitionInfo->StartingOffset.QuadPart =
                     StartOffset +
-                    GET_STARTING_SECTOR(PartitionDescriptor) * SectorSize;
+                    UInt32x32To64(GET_STARTING_SECTOR(PartitionDescriptor),
+                    SectorSize);
 
                 /* Calculate the number of hidden sectors */
                 PartitionInfo->HiddenSectors = (PartitionInfo->
@@ -1593,7 +1594,8 @@
 
                 /* Get the partition length */
                 PartitionInfo->PartitionLength.QuadPart =
-                    GET_PARTITION_LENGTH(PartitionDescriptor) * SectorSize;
+                    UInt32x32To64(GET_PARTITION_LENGTH(PartitionDescriptor),
+                    SectorSize);
 
                 /* FIXME: REACTOS HACK */
                 PartitionInfo->PartitionNumber = i + 1;
@@ -1637,8 +1639,9 @@
             {
                 /* Get its offset */
                 Offset.QuadPart = VolumeOffset.QuadPart +
-                                  GET_STARTING_SECTOR(PartitionDescriptor) *
-                                  SectorSize;
+                                  UInt32x32To64(
+                                     GET_STARTING_SECTOR(PartitionDescriptor),
+                                     SectorSize);
 
                 /* If this is a primary partition, this is the volume offset */
                 if (IsPrimary) VolumeOffset = Offset;