From 16620f6835ea815d35282a221ed4d327f723849d Mon Sep 17 00:00:00 2001
From: Nekotekina <nekotekina@gmail.com>
Date: Wed, 19 May 2021 16:34:31 +0300
Subject: [PATCH] vm_native: sparse file fixup (Win32)

Clear file if it occupies blocks.
Makes it more fool-proof and fixes possible bug.
---
 rpcs3/util/vm_native.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/rpcs3/util/vm_native.cpp b/rpcs3/util/vm_native.cpp
index 00323d73be..00af16f1e8 100644
--- a/rpcs3/util/vm_native.cpp
+++ b/rpcs3/util/vm_native.cpp
@@ -345,6 +345,16 @@ namespace utils
 
 			if (DeviceIoControl(h, FSCTL_SET_SPARSE, nullptr, 0, nullptr, 0, nullptr, nullptr))
 			{
+				FILE_STANDARD_INFO info;
+				ensure(GetFileInformationByHandleEx(h, FileStandardInfo, &info, sizeof(info)));
+
+				if (info.AllocationSize.QuadPart)
+				{
+					// Make sure the file is not "dirty"
+					FILE_END_OF_FILE_INFO _eof{};
+					ensure(SetFileInformationByHandle(h, FileEndOfFileInfo, &_eof, sizeof(_eof)));
+				}
+
 				return true;
 			}