[FASTFAT]

VfatWrite (but not VfatRead) is supposed to return STATUS_INVALID_USER_BUFFER
if an error occurred while locking the buffer.
[KERNEL32]
Reading 0 bytes using ReadFile doesn't always succeed on Windows.


svn path=/trunk/; revision=68620

reactos/dll/win32/kernel32/client/file/rw.c

@@ -131,7 +131,6 @@ ReadFile(IN HANDLE hFile,
     TRACE("ReadFile(hFile %p)\n", hFile);
 
     if (lpNumberOfBytesRead != NULL) *lpNumberOfBytesRead = 0;
-    if (!nNumberOfBytesToRead) return TRUE;
 
     hFile = TranslateStdHandle(hFile);
 

reactos/drivers/filesystems/fastfat/rw.c

@@ -924,6 +924,7 @@ VfatWrite(
     Status = VfatLockUserBuffer(IrpContext->Irp, Length, IoReadAccess);
     if (!NT_SUCCESS(Status))
     {
+        Status = STATUS_INVALID_USER_BUFFER;
         goto ByeBye;
     }