From d18a9cd12ffbe017feee86597d5e6f701f31da47 Mon Sep 17 00:00:00 2001
From: Randall Leeds <randall@bleeds.info>
Date: Thu, 22 Dec 2016 15:36:05 -0800
Subject: [PATCH] catch access denied to pid file

fix #1091
---
 gunicorn/pidfile.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gunicorn/pidfile.py b/gunicorn/pidfile.py
index 7f7f844f..a6e085fd 100644
--- a/gunicorn/pidfile.py
+++ b/gunicorn/pidfile.py
@@ -75,6 +75,8 @@ class Pidfile(object):
                     os.kill(wpid, 0)
                     return wpid
                 except OSError as e:
+                    if e.args[0] == errno.EPERM:
+                        return wpid
                     if e.args[0] == errno.ESRCH:
                         return
                     raise