From 373eb302ad5b641059bd8830a85d824b1b55c46c Mon Sep 17 00:00:00 2001
From: outphase <outphase@gmail.com>
Date: Sun, 13 Aug 2023 10:04:13 -0500
Subject: [PATCH] init: change rootful detection condition (#909)

* Change rootful detection condition

`cat /run/host/etc/shadow > /dev/null` appears to always return true even when rootless.

Check to see if `/etc/shadow` is writable to determine access. The earlier commit for checking readability also always returned true.

* Update distrobox-init
---
 distrobox-init | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/distrobox-init b/distrobox-init
index 1f490911dc..3026defae7 100755
--- a/distrobox-init
+++ b/distrobox-init
@@ -187,7 +187,9 @@ fi
 #
 # if /run/.nopasswd is present, let's treat the init as rootless, this is not
 # a good thing, users behold!
-if cat /run/host/etc/shadow > /dev/null && [ ! -e /run/.nopasswd ]; then
+if stat /run/host/etc/shadow &&
+	[ "$(stat -c "%u" /run/host/etc/shadow)" = "0" ] &&
+	[ ! -e /run/.nopasswd ]; then
 	rootful=1
 fi