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From a66f97acac8b99a49aac58adf6d652cad7e4be38 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 21 Oct 2016 12:27:46 +0200
Subject: [PATCH] core: if the start command vanishes during runtime don't hit
an assert
This can happen when the configuration is changed and reloaded while we are
executing a service. Let's not hit an assert in this case.
Fixes: #4444
Cherry-picked from: 47fffb3530af3e3ad4048570611685635fde062e
Resolves: #1421658
---
src/core/service.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/src/core/service.c b/src/core/service.c
index 6e7baa76c6..84e00573f3 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -1563,7 +1563,15 @@ static void service_enter_start(Service *s) {
}
if (!c) {
- assert(s->type == SERVICE_ONESHOT);
+ if (s->type != SERVICE_ONESHOT) {
+ /* There's no command line configured for the main command? Hmm, that is strange. This can only
+ * happen if the configuration changes at runtime. In this case, let's enter a failure
+ * state. */
+ log_unit_error(UNIT(s), "There's no 'start' task anymore we could start: %m");
+ r = -ENXIO;
+ goto fail;
+ }
+
service_enter_start_post(s);
return;
}