From e74818353882f187e5971b5a3a481f17df883dbe Mon Sep 17 00:00:00 2001
From: Jelle Licht <jlicht@fsfe.org>
Date: Tue, 29 Sep 2020 23:25:13 +0200
Subject: linux-container: Reset jailed root permissions.

* gnu/build/linux-container.scm (mount-file-systems): Add 'chmod' call.
* tests/containers.scm
("call-with-container, mnt namespace, root permissions"): New test.
---
 gnu/build/linux-container.scm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'gnu/build')

diff --git a/gnu/build/linux-container.scm b/gnu/build/linux-container.scm
index 2d4de788df..4a8bed5a9a 100644
--- a/gnu/build/linux-container.scm
+++ b/gnu/build/linux-container.scm
@@ -170,7 +170,8 @@ for the process."
     (pivot-root root put-old)
     (chdir "/")
     (umount "real-root" MNT_DETACH)
-    (rmdir "real-root")))
+    (rmdir "real-root")
+    (chmod "/" #o755)))
 
 (define* (initialize-user-namespace pid host-uids
                                     #:key (guest-uid 0) (guest-gid 0))
-- 
cgit v1.2.3