From 2582bebe06cf06cd2bdce9ada7764fccc3730ef4 Mon Sep 17 00:00:00 2001
From: Philipp Hagemeister <phihag@phihag.de>
Date: Mon, 1 Sep 2014 01:41:25 +0200
Subject: [PATCH] [utils] Use flock instead of lockf (Fixes #3621)

---
 youtube_dl/utils.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 8a36e619a..6fe057234 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -1141,10 +1141,10 @@ def _unlock_file(f):
     import fcntl
 
     def _lock_file(f, exclusive):
-        fcntl.lockf(f, fcntl.LOCK_EX if exclusive else fcntl.LOCK_SH)
+        fcntl.flock(f, fcntl.LOCK_EX if exclusive else fcntl.LOCK_SH)
 
     def _unlock_file(f):
-        fcntl.lockf(f, fcntl.LOCK_UN)
+        fcntl.flock(f, fcntl.LOCK_UN)
 
 
 class locked_file(object):