From 0ef48896d9f23b9fd547a532a4e6e6b8f8b12901 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= Date: Wed, 23 Nov 2022 16:09:56 +0100 Subject: [PATCH 2/2] pam: add a call to pam_namespace A call to pam_namespace is required so that children of user@.service end up in a namespace as expected. pam_namespace gets called as part of the stack that creates a session (login, sshd, gdm, etc.) and those processes end up in a namespace, but it also needs to be called from our stack which is parallel and descends from pid1 itself. The call to pam_namespace is similar to the call to pam_keyinit that was added in ab79099d1684457d040ee7c28b2012e8c1ea9a4f. The pam stack for user@.service creates a new session which is disconnected from the parent environment. Both calls are not suitable for inclusion in the shared part of the stack (e.g. @system-auth on Fedora/RHEL systems), because for example su/sudo/runuser should not include them. Fixes #17043 (Allow to execute user service into dedicated namespace if pam_namespace enabled) Related to https://bugzilla.redhat.com/show_bug.cgi?id=1861836 (Polyinstantiation is ignored/bypassed in GNOME sessions) --- src/login/systemd-user.in | 1 + 1 file changed, 1 insertion(+) diff --git a/src/login/systemd-user.in b/src/login/systemd-user.in index d5597d28cb..06f7e36458 100644 --- a/src/login/systemd-user.in +++ b/src/login/systemd-user.in @@ -15,6 +15,7 @@ session required pam_selinux.so nottys open {% endif %} session required pam_loginuid.so session optional pam_keyinit.so force revoke +session required pam_namespace.so {% if ENABLE_HOMED %} -session optional pam_systemd_home.so {% endif %} -- 2.38.1