From de26ed56746c0af95afe99c00b798b6d5384e84c Mon Sep 17 00:00:00 2001
From: Rom Walton <romw@romwnet.org>
Date: Tue, 20 Jun 2017 06:55:40 -0700
Subject: [PATCH] Increase the number of use cases file_size() works correctly,
 per JuhaSointusalo.

Juha had a good point in pull-request #1860, capture the bug fix before it gets lost in the sands of time.
---
 lib/filesys.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/filesys.cpp b/lib/filesys.cpp
index a54e833587..922c9fa736 100644
--- a/lib/filesys.cpp
+++ b/lib/filesys.cpp
@@ -351,7 +351,7 @@ int boinc_delete_file(const char* path) {
 //
 int file_size(const char* path, double& size) {
 #if defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__MINGW32__)
-    HANDLE h = CreateFileA(path, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
+    HANDLE h = CreateFileA(path, 0, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, 0, OPEN_EXISTING, 0, 0);
     if (h == INVALID_HANDLE_VALUE) return ERR_STAT;
     LARGE_INTEGER lisize;
     if (GetFileSizeEx(h, &lisize)) {