From 4acc8a3168e5f11b5308cf8558d68bf2a0503444 Mon Sep 17 00:00:00 2001
From: huangkaibin <huangkaibin@huawei.com>
Date: Mon, 7 Aug 2017 17:06:30 +0800
Subject: [PATCH] systemd: Activation service must be restarted when it is already started and re-actived
by dbus

When dbus-daemon service is killed, every activation service must be restarted
to reestblished dbus connection between dbus-daemon and the service.
Otherwise, there will be problem on the dbus connection. This patch fix this
problem by set JobType to JOB_RESTART when it is re-actived in signal_activation_request function.
---
 src/core/dbus.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/core/dbus.c b/src/core/dbus.c
index 29524d4..38940ef 100644
--- a/src/core/dbus.c
+++ b/src/core/dbus.c
@@ -152,6 +152,8 @@ static int signal_activation_request(sd_bus_message *message, void *userdata, sd
         const char *name;
         Unit *u;
         int r;
+        int jobtype;
+        Service *s = NULL;

         assert(message);

@@ -177,7 +179,13 @@ static int signal_activation_request(sd_bus_message *message, void *userdata, sd
                 goto failed;
         }

-        r = manager_add_job(m, JOB_START, u, JOB_REPLACE, NULL, &error, NULL);
+        jobtype = JOB_START;
+        s = SERVICE(u);
+        if(s && s->state != SERVICE_DEAD) {
+            jobtype = JOB_RESTART;
+            log_unit_info(u, "Service '%s' will be restarted to activate the service. The current service state is %d.", u->id, s->state);
+        }
+        r = manager_add_job(m, jobtype, u, JOB_REPLACE, NULL, &error, NULL);
         if (r < 0)
                 goto failed;

--
1.8.3.1