From cb98f711f7c6ea9fdeccccf1cc3ac9e55838fbac Mon Sep 17 00:00:00 2001
From: Bill Zissimopoulos <billziss@navimatics.com>
Date: Fri, 21 Jan 2022 17:54:08 +0000
Subject: [PATCH] tst: ntptfs: fix ea size for NTFS compatibility

---
 tst/ntptfs/lfs.c  | 2 +-
 tst/ntptfs/ptfs.c | 2 +-
 tst/ntptfs/ptfs.h | 5 +++++
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/tst/ntptfs/lfs.c b/tst/ntptfs/lfs.c
index 6f9d2678..19544a7c 100644
--- a/tst/ntptfs/lfs.c
+++ b/tst/ntptfs/lfs.c
@@ -150,7 +150,7 @@ NTSTATUS LfsGetFileInfo(
     FileInfo->ChangeTime = FileAllInfo.V.BasicInformation.ChangeTime.QuadPart;
     FileInfo->IndexNumber = FileAllInfo.V.InternalInformation.IndexNumber.QuadPart;
     FileInfo->HardLinks = 0;
-    FileInfo->EaSize = FileAllInfo.V.EaInformation.EaSize;
+    FileInfo->EaSize = LfsGetEaSize(FileAllInfo.V.EaInformation.EaSize);
 
     if (0 != OpenFileInfo &&
         OpenFileInfo->NormalizedNameSize > sizeof(WCHAR) + FileAllInfo.V.NameInformation.FileNameLength &&
diff --git a/tst/ntptfs/ptfs.c b/tst/ntptfs/ptfs.c
index fc942920..85acc388 100644
--- a/tst/ntptfs/ptfs.c
+++ b/tst/ntptfs/ptfs.c
@@ -736,7 +736,7 @@ static inline VOID CopyQueryInfoToDirInfo(
     DirInfo->FileInfo.IndexNumber = QueryInfo->FileId.QuadPart;
     DirInfo->FileInfo.HardLinks = 0;
     DirInfo->FileInfo.EaSize = 0 != (FILE_ATTRIBUTE_REPARSE_POINT & QueryInfo->FileAttributes) ?
-        0 : QueryInfo->EaSize;
+        0 : LfsGetEaSize(QueryInfo->EaSize);
 }
 
 static NTSTATUS BufferedReadDirectory(FSP_FILE_SYSTEM *FileSystem,
diff --git a/tst/ntptfs/ptfs.h b/tst/ntptfs/ptfs.h
index 9c8f2f8c..84232d7b 100644
--- a/tst/ntptfs/ptfs.h
+++ b/tst/ntptfs/ptfs.h
@@ -127,6 +127,11 @@ NTSTATUS LfsFsControlFile(
     PVOID OutputBuffer,
     ULONG OutputBufferLength,
     PULONG PBytesTransferred);
+static inline
+ULONG LfsGetEaSize(ULONG EaSize)
+{
+    return 0 != EaSize ? EaSize - 4 : 0;
+}
 
 
 /*