From 9233b3d059088a7bd35aa97a8ccd6de98ec90702 Mon Sep 17 00:00:00 2001
From: Kir Kolyshkin <kolyshkin@gmail.com>
Date: Thu, 2 Feb 2023 13:07:56 -0800
Subject: [PATCH] tests/int: test for /dev/null owner regression

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 1bb6209aa1dac56b193d3947bc54292cbd8151cd)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
---
 tests/integration/exec.bats | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/tests/integration/exec.bats b/tests/integration/exec.bats
index 140cd181011..47c047bd638 100644
--- a/tests/integration/exec.bats
+++ b/tests/integration/exec.bats
@@ -125,10 +125,25 @@ function teardown() {
 
 	runc exec --user 1000:1000 test_busybox id
 	[ "$status" -eq 0 ]
-
 	[[ "${output}" == "uid=1000 gid=1000"* ]]
 }
 
+# https://github.com/opencontainers/runc/issues/3674.
+@test "runc exec --user vs /dev/null ownership" {
+	requires root
+
+	runc run -d --console-socket "$CONSOLE_SOCKET" test_busybox
+	[ "$status" -eq 0 ]
+
+	ls -l /dev/null
+	__runc exec -d --user 1000:1000 test_busybox id </dev/null
+	ls -l /dev/null
+	UG=$(stat -c %u:%g /dev/null)
+
+	# Host's /dev/null must be owned by root.
+	[ "$UG" = "0:0" ]
+}
+
 @test "runc exec --additional-gids" {
 	requires root