From 45998b3e371b819ce0dbe50da703809a048cc2fe Mon Sep 17 00:00:00 2001
From: Eveldee <eveldee0680@live.fr>
Date: Fri, 5 May 2023 07:31:41 +0200
Subject: [PATCH] [utils] `locked_file`: Fix for virtiofs (#6840)

Authored by: brandon-dacrib
Closes #6823
---
 yt_dlp/utils.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index 2f5e667204..47aa75c470 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -2187,10 +2187,11 @@ def _lock_file(f, exclusive, block):
                 fcntl.lockf(f, flags)
 
         def _unlock_file(f):
-            try:
-                fcntl.flock(f, fcntl.LOCK_UN)
-            except OSError:
-                fcntl.lockf(f, fcntl.LOCK_UN)
+            with contextlib.suppress(OSError):
+                return fcntl.flock(f, fcntl.LOCK_UN)
+            with contextlib.suppress(OSError):
+                return fcntl.lockf(f, fcntl.LOCK_UN)  # AOSP does not have flock()
+            return fcntl.flock(f, fcntl.LOCK_UN | fcntl.LOCK_NB)  # virtiofs needs LOCK_NB on unlocking
 
     except ImportError: