Log signal number on exit

dpinger.c

@@ -1,6 +1,6 @@
 
 //
-// Copyright (c) 2015-2020, Denny Page
+// Copyright (c) 2015-2022, Denny Page
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -190,25 +190,6 @@ static uint16_t                 sequence_limit;
 // Receive thread ready
 static unsigned int             recv_ready = 0;
 
-//
-// Termination handler
-//
-__attribute__ ((noreturn))
-static void
-term_handler(void)
-{
-    // NB: This function may be simultaneously invoked by multiple threads
-    if (usocket_name)
-    {
-        (void) unlink(usocket_name);
-    }
-    if (pidfile_name)
-    {
-        (void) unlink(pidfile_name);
-    }
-    exit(0);
-}
-
 
 //
 // Log for abnormal events
@@ -234,6 +215,28 @@ logger(
 }
 
 
+//
+// Termination handler
+//
+__attribute__ ((noreturn))
+static void
+term_handler(
+    int                         signum)
+{
+    // NB: This function may be simultaneously invoked by multiple threads
+    if (usocket_name)
+    {
+        (void) unlink(usocket_name);
+    }
+    if (pidfile_name)
+    {
+        (void) unlink(pidfile_name);
+    }
+    logger("exiting on signal %d\n", signum);
+    exit(0);
+}
+
+
 //
 // Compute checksum for ICMP
 //
@@ -840,7 +843,7 @@ get_length_arg(
 static void
 usage(void)
 {
-    fprintf(stderr, "Dpinger version 3.1\n\n");
+    fprintf(stderr, "Dpinger version 3.2\n\n");
     fprintf(stderr, "Usage:\n");
     fprintf(stderr, "  %s [-f] [-R] [-S] [-P] [-B bind_addr] [-s send_interval] [-l loss_interval] [-t time_period] [-r report_interval] [-d data_length] [-o output_file] [-A alert_interval] [-D latency_alarm] [-L loss_alarm] [-C alert_cmd] [-i identifier] [-u usocket] [-p pidfile] dest_addr\n\n", progname);
     fprintf(stderr, "  options:\n");