From d198821c07f1af7348064a853b3ff9d4d9db6d0a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20=27sil2100=27=20Zemczak?=
 <lukasz.zemczak@canonical.com>
Date: Wed, 28 Jul 2021 21:54:34 +0200
Subject: [PATCH] Fix sharing of the /dev tree to make sure we can safely
 umount the chroot when needed. This fixes local non-livefs-builder image
 builds.

---
 live-build/functions | 1 +
 1 file changed, 1 insertion(+)

diff --git a/live-build/functions b/live-build/functions
index d1be603b..5f2da181 100644
--- a/live-build/functions
+++ b/live-build/functions
@@ -132,6 +132,7 @@ setup_mountpoint() {
     fi
 
     mount --rbind /dev "$mountpoint/dev"
+    mount --make-rslave "$mountpoint/dev"
     mount proc-live -t proc "$mountpoint/proc"
     mount sysfs-live -t sysfs "$mountpoint/sys"
     mount securityfs -t securityfs "$mountpoint/sys/kernel/security"