From 6e396a85c2dc6eb769d9d19a1d96f49863ba4be9 Mon Sep 17 00:00:00 2001
From: Andrei Kurushin <ajax16384@gmail.com>
Date: Thu, 28 Sep 2017 02:14:20 +0300
Subject: [PATCH] fix windows file preallocation issue

---
 src/file.cpp | 31 +------------------------------
 1 file changed, 1 insertion(+), 30 deletions(-)

diff --git a/src/file.cpp b/src/file.cpp
index 56c0acfbf..14d382f3c 100644
--- a/src/file.cpp
+++ b/src/file.cpp
@@ -1153,35 +1153,7 @@ namespace {
 				ec.assign(GetLastError(), system_category());
 				return false;
 			}
-		}
-
-#if _WIN32_WINNT >= 0x0600 // only if Windows Vista or newer
-		if (!(m_open_mode & open_mode::sparse))
-		{
-			typedef DWORD (WINAPI *GetFileInformationByHandleEx_t)(HANDLE hFile
-				, FILE_INFO_BY_HANDLE_CLASS FileInformationClass
-				, LPVOID lpFileInformation
-				, DWORD dwBufferSize);
-
-			auto GetFileInformationByHandleEx =
-				aux::get_library_procedure<aux::kernel32, GetFileInformationByHandleEx_t>("GetFileInformationByHandleEx");
-
-			offs.QuadPart = 0;
-			if (GetFileInformationByHandleEx != nullptr)
-			{
-				// only allocate the space if the file
-				// is not fully allocated
-				FILE_STANDARD_INFO inf;
-				if (GetFileInformationByHandleEx(native_handle()
-					, FileStandardInfo, &inf, sizeof(inf)) == FALSE)
-				{
-					ec.assign(GetLastError(), system_category());
-					if (ec) return false;
-				}
-				offs = inf.AllocationSize;
-			}
-
-			if (offs.QuadPart < s)
+			if (!(m_open_mode & open_mode::sparse))
 			{
 				// if the user has permissions, avoid filling
 				// the file with zeroes, but just fill it with
@@ -1189,7 +1161,6 @@ namespace {
 				set_file_valid_data(m_file_handle, s);
 			}
 		}
-#endif // if Windows Vista
 #else // NON-WINDOWS
 		struct stat st;
 		if (::fstat(native_handle(), &st) != 0)