From 250f85de6c174662aa135ef64b1c47bf165eaa66 Mon Sep 17 00:00:00 2001
From: Natalia Portillo <claunia@claunia.com>
Date: Fri, 4 Sep 2020 21:03:24 +0100
Subject: [PATCH] Fix atomicity of file reading in VFS.

---
 RomRepoMgr.Core/Filesystem/Vfs.cs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/RomRepoMgr.Core/Filesystem/Vfs.cs b/RomRepoMgr.Core/Filesystem/Vfs.cs
index a2110f2..42e88b1 100644
--- a/RomRepoMgr.Core/Filesystem/Vfs.cs
+++ b/RomRepoMgr.Core/Filesystem/Vfs.cs
@@ -364,9 +364,12 @@ namespace RomRepoMgr.Core.Filesystem
             if(!_streamsCache.TryGetValue(handle, out Stream stream))
                 return -1;
 
-            stream.Position = offset;
+            lock(stream)
+            {
+                stream.Position = offset;
 
-            return stream.Read(buf, 0, buf.Length);
+                return stream.Read(buf, 0, buf.Length);
+            }
         }
 
         internal bool Close(long handle)