[hpoussin] 65026: [NTFS] Correctly read indexes This fixes (at least) an infinite loop when trying to mount some partitions.

Author: hpoussin
Date: Sun Oct 26 19:10:04 2014
New Revision: 65026

URL: http://svn.reactos.org/svn/reactos?rev=65026&view=rev
Log:
[NTFS] Correctly read indexes

This fixes (at least) an infinite loop when trying to mount some partitions.

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

Modified: trunk/reactos/drivers/filesystems/ntfs/mft.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/m…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/mft.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/mft.c	[iso-8859-1] Sun Oct 26 19:10:04 2014
@@ -631,9 +631,9 @@
                 IndexBuffer = (PINDEX_BUFFER)IndexRecord;
                 ASSERT(IndexBuffer->Ntfs.Type == 'XDNI');
                 ASSERT(IndexBuffer->Header.AllocatedSize + 0x18 == IndexBlockSize);
-                IndexEntry = (PINDEX_ENTRY_ATTRIBUTE)(&IndexBuffer->Header +
IndexBuffer->Header.FirstEntryOffset);
-                IndexEntryEnd = (PINDEX_ENTRY_ATTRIBUTE)(&IndexBuffer->Header +
IndexBuffer->Header.TotalSizeOfEntries);
-                //ASSERT(IndexEntryEnd <=
(PINDEX_ENTRY_ATTRIBUTE)((ULONG_PTR)IndexBuffer + IndexBlockSize)); FIXME: Why doesn't
it work?
+                IndexEntry =
(PINDEX_ENTRY_ATTRIBUTE)((ULONG_PTR)&IndexBuffer->Header +
IndexBuffer->Header.FirstEntryOffset);
+                IndexEntryEnd =
(PINDEX_ENTRY_ATTRIBUTE)((ULONG_PTR)&IndexBuffer->Header +
IndexBuffer->Header.TotalSizeOfEntries);
+                ASSERT(IndexEntryEnd <=
(PINDEX_ENTRY_ATTRIBUTE)((ULONG_PTR)IndexBuffer + IndexBlockSize));
 
                 while (IndexEntry < IndexEntryEnd &&
                        !(IndexEntry->Flags & NTFS_INDEX_ENTRY_END))
@@ -653,6 +653,7 @@
                     }
 
                     ++CurrentEntry;
+                    ASSERT(IndexEntry->Length >= sizeof(INDEX_ENTRY_ATTRIBUTE));
                     IndexEntry = (PINDEX_ENTRY_ATTRIBUTE)((PCHAR)IndexEntry +
IndexEntry->Length);
                 }