[ekohl] 75975: [FASTFAT] Terminate the path name at the last slash when a file is opened using the IO_OPEN_TARGET_DIRECTORY option. This fixes some IoCreateFile kernel mode tests.

Author: ekohl
Date: Tue Sep 26 12:36:17 2017
New Revision: 75975

URL: http://svn.reactos.org/svn/reactos?rev=75975&view=rev
Log:
[FASTFAT]
Terminate the path name at the last slash when a file is opened using the
IO_OPEN_TARGET_DIRECTORY option. This fixes some IoCreateFile kernel mode tests.

Modified:
    trunk/reactos/drivers/filesystems/fastfat/create.c

Modified: trunk/reactos/drivers/filesystems/fastfat/create.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat/create.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat/create.c	[iso-8859-1] Tue Sep 26 12:36:17
2017
@@ -577,7 +577,7 @@
     else
     {
         PVFATFCB TargetFcb;
-        LONG idx, FileNameLen;
+        LONG idx;
 
         vfatAddToStat(DeviceExt, Fat.CreateHits, 1);
 
@@ -586,8 +586,8 @@
         {
             vfatGrabFCB(DeviceExt, ParentFcb);
         }
+
         Status = vfatGetFCBForFile(DeviceExt, &ParentFcb, &TargetFcb,
&PathNameU);
-
         if (NT_SUCCESS(Status))
         {
             vfatReleaseFCB(DeviceExt, TargetFcb);
@@ -615,14 +615,14 @@
 
         if (idx > 0 || PathNameU.Buffer[0] == L'\\')
         {
-            /* We don't want to include / in the name */
-            FileNameLen = PathNameU.Length - ((idx + 1) * sizeof(WCHAR));
-
-            /* Update FO just to keep file name */
-            /* Skip first slash */
-            ++idx;
-            FileObject->FileName.Length = FileNameLen;
-            RtlMoveMemory(&PathNameU.Buffer[0], &PathNameU.Buffer[idx],
FileObject->FileName.Length);
+            /* Terminate the string at the last backslash */
+            PathNameU.Buffer[idx + 1] = UNICODE_NULL;
+            PathNameU.Length = (idx + 1) * sizeof(WCHAR);
+            PathNameU.MaximumLength = PathNameU.Length + sizeof(WCHAR);
+
+            /* Update the file object as well */
+            FileObject->FileName.Length = PathNameU.Length;
+            FileObject->FileName.MaximumLength = PathNameU.MaximumLength;
         }
         else
         {