systemd/SOURCES/0807-core-refuse-dbus-activation-if-dbus-is-not-running.patch

62 lines
2.5 KiB
Diff

From 40f8600cfd866e4956fb09ca29bc5dc74e605450 Mon Sep 17 00:00:00 2001
From: Mike Yuan <me@yhndnzj.com>
Date: Tue, 9 May 2023 00:07:45 +0800
Subject: [PATCH] core: refuse dbus activation if dbus is not running
dbus-broker issues StartUnit directly for activation requests,
so let's add a check on bus state in bus_unit_queue_job to refuse
that if dbus is not running.
Replaces #27570
Closes #26799
(cherry picked from commit 53964fd26b4a01191609ffc064aa8ccccd28e377)
Resolves: RHEL-40878
---
src/core/dbus-unit.c | 7 +++++++
src/core/dbus.c | 5 ++---
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/src/core/dbus-unit.c b/src/core/dbus-unit.c
index 19a71b6cb3..685d45fc23 100644
--- a/src/core/dbus-unit.c
+++ b/src/core/dbus-unit.c
@@ -21,6 +21,7 @@
#include "path-util.h"
#include "process-util.h"
#include "selinux-access.h"
+#include "service.h"
#include "signal-util.h"
#include "special.h"
#include "string-table.h"
@@ -1845,6 +1846,12 @@ int bus_unit_queue_job(
(type == JOB_RELOAD_OR_START && job_type_collapse(type, u) == JOB_START && u->refuse_manual_start))
return sd_bus_error_setf(error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, unit %s may be requested by dependency only (it is configured to refuse manual start/stop).", u->id);
+ /* dbus-broker issues StartUnit for activation requests, so let's apply the same check
+ * used in signal_activation_request(). */
+ if (type == JOB_START && u->type == UNIT_SERVICE &&
+ SERVICE(u)->type == SERVICE_DBUS && !manager_dbus_is_running(u->manager))
+ return sd_bus_error_set(error, BUS_ERROR_SHUTTING_DOWN, "Refusing activation, D-Bus is not running.");
+
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return r;
diff --git a/src/core/dbus.c b/src/core/dbus.c
index 3cbe9c5cfd..b4564f79a2 100644
--- a/src/core/dbus.c
+++ b/src/core/dbus.c
@@ -160,9 +160,8 @@ static int signal_activation_request(sd_bus_message *message, void *userdata, sd
return 0;
}
- if (manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SERVICE) ||
- manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SOCKET)) {
- r = sd_bus_error_set(&error, BUS_ERROR_SHUTTING_DOWN, "Refusing activation, D-Bus is shutting down.");
+ if (!manager_dbus_is_running(m)) {
+ r = sd_bus_error_set(&error, BUS_ERROR_SHUTTING_DOWN, "Refusing activation, D-Bus is not running.");
goto failed;
}