From f441ddae6363a10b1e8d8764bc906866f6ee6f48 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Thu, 29 Sep 2016 16:07:41 +0200
Subject: [PATCH] pid1: more informative error message for ignored
 notifications

It's probably easier to diagnose a bad notification message if the
contents are printed. But still, do anything only if debugging is on.

 Conflicts:
	src/core/manager.c

Cherry-picked from: a86b76753d7868c2d05f046f601bc7dc89fc2203
Resolves: #1380259
---
 src/core/manager.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/core/manager.c b/src/core/manager.c
index 0376c4d..27f032b 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -1631,6 +1631,14 @@ static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const
 
         if (UNIT_VTABLE(u)->notify_message)
                 UNIT_VTABLE(u)->notify_message(u, pid, tags, fds);
+        else if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) {
+                _cleanup_free_ char *x = NULL, *y = NULL;
+
+                x = cescape(buf);
+                if (x)
+                        y = ellipsize(x, 20, 90);
+                log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y));
+        }
 }
 
 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {