From 2962b4fb7fb06aa683005b5d2bdc7d69cc87e324 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Tue, 8 Oct 2019 22:47:32 +0200
Subject: add signal handler

---
 udev-block-notify.c | 16 ++++++++++++++--
 udev-block-notify.h |  3 +++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/udev-block-notify.c b/udev-block-notify.c
index 3a67599..0a87af1 100644
--- a/udev-block-notify.c
+++ b/udev-block-notify.c
@@ -21,6 +21,7 @@ const static struct option options_long[] = {
 
 char *program;
 uint8_t verbose = 0;
+uint8_t doexit = 0;
 
 /*** get_notification ***/
 NotifyNotification * get_notification(struct notifications *notifications, dev_t devnum) {
@@ -68,6 +69,14 @@ char * appendstr(const char *text, char *notifystr, const char *property, const
 	return notifystr;
 }
 
+/*** received_signal ***/
+void received_signal(int signal) {
+	if (verbose > 0)
+		printf("%s: Received signal: %s\n", program, strsignal(signal));
+
+	doexit++;
+}
+
 /*** main ***/
 int main (int argc, char ** argv) {
 	const char *action = NULL;
@@ -142,11 +151,14 @@ int main (int argc, char ** argv) {
 	notifications->notification = NULL;
 	notifications->next = NULL;
 
+	signal(SIGINT, received_signal);
+	signal(SIGTERM, received_signal);
+
 #ifdef HAVE_SYSTEMD
 	sd_notify(0, "READY=1\nSTATUS=Waiting for udev block events...");
 #endif
 
-	while (1) {
+	while (doexit == 0) {
 		FD_ZERO(&readfds);
 		if (mon != NULL)
 			FD_SET(udev_monitor_get_fd(mon), &readfds);
@@ -283,7 +295,7 @@ int main (int argc, char ** argv) {
 				notify_notification_set_timeout(notification, notification_timeout);
 
 				while(notify_notification_show(notification, &error) == FALSE) {
-					if (errcount > 1) {
+					if (errcount > 1 || doexit) {
 						fprintf(stderr, "%s: Looks like we can not reconnect to notification daemon... Exiting.\n", program);
 						exit(EXIT_FAILURE);
 					} else {
diff --git a/udev-block-notify.h b/udev-block-notify.h
index 7e7be99..30e77e5 100644
--- a/udev-block-notify.h
+++ b/udev-block-notify.h
@@ -45,6 +45,9 @@ char * newstr(const char *text, const char *device, unsigned short int major,
 char * appendstr(const char *text, char *notifystr, const char *property,
 		const char *value);
 
+/*** received_signal ***/
+void received_signal(int signal);
+
 /*** main ***/
 int main (int argc, char ** argv);
 
-- 
cgit v1.2.3-54-g00ecf