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From be21e10cf30e66215e986ab900637b32e502a29a Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 10 Nov 2015 16:53:00 +0100
Subject: [PATCH] journald: dispatch SIGTERM/SIGINT with a low priority
Let's make sure to process all queued log data before exiting, so that
we don't unnecessary lose messages when shutting down.
https://github.com/systemd/systemd/pull/1812#issuecomment-155149871
Cherry-picked from: b374689c02c681671a3c3c0b0fd3add32386b442
Related: #1318994
---
src/journal/journald-server.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index 275224dc99..2b7ecd09ab 100644
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -1284,10 +1284,22 @@ static int setup_signals(Server *s) {
if (r < 0)
return r;
+ /* Let's process SIGTERM late, so that we flush all queued
+ * messages to disk before we exit */
+ r = sd_event_source_set_priority(s->sigterm_event_source, SD_EVENT_PRIORITY_NORMAL+20);
+ if (r < 0)
+ return r;
+
+ /* When journald is invoked on the terminal (when debugging),
+ * it's useful if C-c is handled equivalent to SIGTERM. */
r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s);
if (r < 0)
return r;
+ r = sd_event_source_set_priority(s->sigint_event_source, SD_EVENT_PRIORITY_NORMAL+20);
+ if (r < 0)
+ return r;
+
return 0;
}