journald: log provenience of signals

1 files changed, 17 insertions, 0 deletions

diff --git a/src/shared/log.c b/src/shared/log.c
index 2a075ffeba..ee20921f78 100644
--- a/src/shared/log.c
+++ b/src/shared/log.c
@@ -973,3 +973,20 @@ static const char *const log_target_table[] = {
 };
 
 DEFINE_STRING_TABLE_LOOKUP(log_target, LogTarget);
+
+void log_received_signal(int level, const struct signalfd_siginfo *si) {
+        if (si->ssi_pid > 0) {
+                _cleanup_free_ char *p = NULL;
+
+                get_process_comm(si->ssi_pid, &p);
+
+                log_full(level,
+                         "Received SIG%s from PID "PID_FMT" (%s).",
+                         signal_to_string(si->ssi_signo),
+                         si->ssi_pid, strna(p));
+        } else
+                log_full(level,
+                         "Received SIG%s.",
+                         signal_to_string(si->ssi_signo));
+
+}