core/manager: print info about interesting signals

Information about signals which are not routinely received by systemd
are printed at info level. This should make it easier to see what is
happening in the system.

diff --git a/src/core/manager.c b/src/core/manager.c
index f69ae079df6f0e432dc2a0d4f248974f3eb35e41..ea8887a92ec90074670519d6105db2199070219e 100644 (file)
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -1463,16 +1463,22 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t
                 }
 
                 if (sfsi.ssi_pid > 0) {
-                        char *p = NULL;
+                        _cleanup_free_ char *p = NULL;
 
                         get_process_comm(sfsi.ssi_pid, &p);
 
-                        log_debug("Received SIG%s from PID %lu (%s).",
-                                  signal_to_string(sfsi.ssi_signo),
-                                  (unsigned long) sfsi.ssi_pid, strna(p));
-                        free(p);
+                        log_full(sfsi.ssi_signo == SIGCHLD ||
+                                 (sfsi.ssi_signo == SIGTERM && m->running_as == SYSTEMD_USER)
+                                 ? LOG_DEBUG : LOG_INFO,
+                                 "Received SIG%s from PID %lu (%s).",
+                                 signal_to_string(sfsi.ssi_signo),
+                                 (unsigned long) sfsi.ssi_pid, strna(p));
                 } else
-                        log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
+                        log_full(sfsi.ssi_signo == SIGCHLD ||
+                                 (sfsi.ssi_signo == SIGTERM && m->running_as == SYSTEMD_USER)
+                                 ? LOG_DEBUG : LOG_INFO,
+                                 "Received SIG%s.",
+                                 signal_to_string(sfsi.ssi_signo));
 
                 switch (sfsi.ssi_signo) {