From d02ca056a376a36cb704e290f6188734d7a9e5bb Mon Sep 17 00:00:00 2001
From: Cole Faust <colefaust@google.com>
Date: Fri, 9 Sep 2022 10:27:15 -0700
Subject: [PATCH] Don't close file descriptors when starting python program

Python programs run via a wrapper script. That wrapper script
can be started with open file descriptors, for example by using
the <(echo foo) syntax in bash. The shouldn't be closed when
starting the real script.

Bug: 203436762
Test: Presubmits
Change-Id: Ib20450f713b15c8a5527d1e433bfd9635cead85f
---
 python/scripts/stub_template_host.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/python/scripts/stub_template_host.txt b/python/scripts/stub_template_host.txt
index 138404bf3..23897b30b 100644
--- a/python/scripts/stub_template_host.txt
+++ b/python/scripts/stub_template_host.txt
@@ -81,7 +81,9 @@ def Main():
     os.environ.update(new_env)
 
     sys.stdout.flush()
-    retCode = subprocess.call(args)
+    # close_fds=False so that you can run binaries with files provided on the command line:
+    # my_python_app --file <(echo foo)
+    retCode = subprocess.call(args, close_fds=False)
     sys.exit(retCode)
   except:
     raise