From 711aca5f4820c2345489136cbbde7428d9f9da1b Mon Sep 17 00:00:00 2001 From: Jan Synacek Date: Tue, 15 May 2018 09:24:20 +0200 Subject: [PATCH] Avoid /tmp being mounted as tmpfs without the user's will Ensure PrivateTmp doesn't require tmpfs through tmp.mount, but rather adds an After relationship. RHEL-only Related: #2138081 --- src/core/unit.c | 7 +------ units/basic.target | 3 ++- 2 files changed, 3 insertions(+), 7 deletions(-) diff --git a/src/core/unit.c b/src/core/unit.c index d08c73613b..1fad0b0ac8 100644 --- a/src/core/unit.c +++ b/src/core/unit.c @@ -1301,12 +1301,7 @@ int unit_add_exec_dependencies(Unit *u, ExecContext *c) { } if (c->private_tmp) { - - /* FIXME: for now we make a special case for /tmp and add a weak dependency on - * tmp.mount so /tmp being masked is supported. However there's no reason to treat - * /tmp specifically and masking other mount units should be handled more - * gracefully too, see PR#16894. */ - r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, "tmp.mount", true, UNIT_DEPENDENCY_FILE); + r = unit_add_dependency_by_name(u, UNIT_AFTER, "tmp.mount", true, UNIT_DEPENDENCY_FILE); if (r < 0) return r; diff --git a/units/basic.target b/units/basic.target index d8cdd5ac14..9eae0782a2 100644 --- a/units/basic.target +++ b/units/basic.target @@ -19,4 +19,5 @@ After=sysinit.target sockets.target paths.target slices.target tmp.mount # require /var and /var/tmp, but only add a Wants= type dependency on /tmp, as # we support that unit being masked, and this should not be considered an error. RequiresMountsFor=/var /var/tmp -Wants=tmp.mount +# RHEL-only: Disable /tmp on tmpfs. +#Wants=tmp.mount