From c7e635dd06824894913ea2ee8ec3ef8c4eab3779 Mon Sep 17 00:00:00 2001
From: Giampaolo Rodola <g.rodola@gmail.com>
Date: Mon, 17 Apr 2023 09:51:26 +0200
Subject: [PATCH] fix #2238 if cwd() cannot be determined always return ""
 instead of None

---
 psutil/_psbsd.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/psutil/_psbsd.py b/psutil/_psbsd.py
index b77a9d6888..ec02430581 100644
--- a/psutil/_psbsd.py
+++ b/psutil/_psbsd.py
@@ -835,7 +835,7 @@ def cwd(self):
         # sometimes we get an empty string, in which case we turn
         # it into None
         if OPENBSD and self.pid == 0:
-            return None  # ...else it would raise EINVAL
+            return ""  # ...else it would raise EINVAL
         elif NETBSD or HAS_PROC_OPEN_FILES:
             # FreeBSD < 8 does not support functions based on
             # kinfo_getfile() and kinfo_getvmmap()