[pschweitzer] 65601: [NTFS] Implement the downward fashion of FSCTL_GET_NTFS_FILE_RECORD and always return a file record which is in use CORE-8725

Author: pschweitzer
Date: Wed Dec 10 20:45:04 2014
New Revision: 65601

URL: http://svn.reactos.org/svn/reactos?rev=65601&view=rev
Log:
[NTFS]
Implement the downward fashion of FSCTL_GET_NTFS_FILE_RECORD and always return a file
record which is in use
CORE-8725

Modified:
    trunk/reactos/drivers/filesystems/ntfs/fsctl.c

Modified: trunk/reactos/drivers/filesystems/ntfs/fsctl.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/f…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/fsctl.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/fsctl.c	[iso-8859-1] Wed Dec 10 20:45:04 2014
@@ -626,14 +626,23 @@
     InputBuffer = (PNTFS_FILE_RECORD_INPUT_BUFFER)Irp->AssociatedIrp.SystemBuffer;
 
     MFTRecord = InputBuffer->FileReferenceNumber.QuadPart;
-    Status = ReadFileRecord(DeviceExt, MFTRecord, FileRecord);
-    if (!NT_SUCCESS(Status))
-    {
-        DPRINT1("Failed reading record: %I64x\n", MFTRecord);
-        ExFreePoolWithTag(FileRecord, TAG_NTFS);
-        return Status;
-    }
-
+    DPRINT1("Requesting: %I64x\n", MFTRecord);
+
+    do
+    {
+        Status = ReadFileRecord(DeviceExt, MFTRecord, FileRecord);
+        if (NT_SUCCESS(Status))
+        {
+            if (FileRecord->Flags & FRH_IN_USE)
+            {
+                break;
+            }
+        }
+
+        --MFTRecord;
+    } while (TRUE);
+
+    DPRINT1("Returning: %I64x\n", MFTRecord);
     OutputBuffer = (PNTFS_FILE_RECORD_OUTPUT_BUFFER)Irp->AssociatedIrp.SystemBuffer;
     OutputBuffer->FileReferenceNumber.QuadPart = MFTRecord;
     OutputBuffer->FileRecordLength = DeviceExt->NtfsInfo.BytesPerFileRecord;