From a10eea41ac76913cd1d7535938dd5af2b51b467f Mon Sep 17 00:00:00 2001
From: "Joshua M. Boniface" <joshua@boniface.me>
Date: Sun, 7 Mar 2021 19:37:21 -0500
Subject: Merge pull request #5402 from Ullmie02/fix-null-size

Use FileShare.None when creating files

(cherry picked from commit 480dd66428e2a8bf76c0747256f2e99b15aae212)
Signed-off-by: Joshua M. Boniface <joshua@boniface.me>
---
 Jellyfin.Api/Controllers/ItemLookupController.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'Jellyfin.Api/Controllers/ItemLookupController.cs')

diff --git a/Jellyfin.Api/Controllers/ItemLookupController.cs b/Jellyfin.Api/Controllers/ItemLookupController.cs
index 6c38f77ce..9f81f91c1 100644
--- a/Jellyfin.Api/Controllers/ItemLookupController.cs
+++ b/Jellyfin.Api/Controllers/ItemLookupController.cs
@@ -346,11 +346,12 @@ namespace Jellyfin.Api.Controllers
             Directory.CreateDirectory(directory);
             using (var stream = result.Content)
             {
+                // use FileShare.None as this bypasses dotnet bug dotnet/runtime#42790 .
                 await using var fileStream = new FileStream(
                     fullCachePath,
                     FileMode.Create,
                     FileAccess.Write,
-                    FileShare.Read,
+                    FileShare.None,
                     IODefaults.FileStreamBufferSize,
                     true);
 
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