From 0899df60c2885941da6eb84800284686264f2bf5 Mon Sep 17 00:00:00 2001
From: nirenjan <nirenjan@gmail.com>
Date: Mon, 30 Aug 2021 10:28:29 -0700
Subject: [PATCH] Add signal handler to dump configuration to disk on SIGUSR1

---
 daemon/x52d_main.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/daemon/x52d_main.c b/daemon/x52d_main.c
index 14edc2d..c7a4d72 100644
--- a/daemon/x52d_main.c
+++ b/daemon/x52d_main.c
@@ -35,6 +35,12 @@ static void reload_handler(int signum)
     flag_reload = true;
 }
 
+static volatile bool flag_save_cfg;
+static void save_config_handler(int signum)
+{
+    flag_save_cfg = true;
+}
+
 static void set_log_file(bool foreground, const char *log_file)
 {
     int rc = 0;
@@ -137,6 +143,7 @@ static void start_daemon(bool foreground, const char *pid_file)
     listen_signal(SIGTERM, termination_handler);
     listen_signal(SIGQUIT, termination_handler);
     listen_signal(SIGHUP, reload_handler);
+    listen_signal(SIGUSR1, save_config_handler);
 
     if (!foreground) {
         /* Fork off for the second time */
@@ -303,6 +310,12 @@ int main(int argc, char **argv)
             x52d_config_apply();
             flag_reload = false;
         }
+
+        if (flag_save_cfg) {
+            PINELOG_INFO(_("Saving X52 configuration to disk"));
+            x52d_config_save(conf_file);
+            flag_save_cfg = false;
+        }
     }
 
     PINELOG_INFO(_("Received termination signal %s"), strsignal(flag_quit));