From d6696df84c0c25e597edb5aa58c863ef360213d3 Mon Sep 17 00:00:00 2001
From: Helmut Grohne <helmut@subdivi.de>
Date: Fri, 21 Jun 2024 21:59:57 +0200
Subject: unschroot: enable opening /dev/stdout

When stdout is an (unnamed) pipe, it usually has permission 0o644. Since
we change uids, /dev/stdout cannot be opened unless we chmod it first.
This causes some packages such as supervisor to fail to build.
---
 examples/unschroot.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'examples')

diff --git a/examples/unschroot.py b/examples/unschroot.py
index b9d4923..47d2a3c 100755
--- a/examples/unschroot.py
+++ b/examples/unschroot.py
@@ -23,6 +23,7 @@ import pwd
 import shutil
 import signal
 import socket
+import stat
 import sys
 import tempfile
 import typing
@@ -210,6 +211,9 @@ def do_run_session(args: argparse.Namespace) -> None:
     pidfd: int
     if pid == 0:
         mainsock.close()
+        for fd in (1, 2):
+            if stat.S_ISFIFO(os.fstat(fd).st_mode):
+                os.fchmod(fd, 0o666)
         os.chdir(session.path)
         ns = (
             linuxnamespaces.CloneFlags.NEWUSER
-- 
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