From b24304ebe9d45044db4798f904d55cc26bca977c Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Thu, 1 Dec 2016 21:35:18 +0100
Subject: Use systemd service manager notification

Notify systemd service manager when our initialization sequence
completed.
---
 Makefile                 | 1 +
 pacredir.c               | 3 +++
 pacredir.h               | 3 +++
 systemd/pacredir.service | 1 +
 4 files changed, 8 insertions(+)

diff --git a/Makefile b/Makefile
index c33806f..4b59aa8 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,7 @@ SED	:= sed
 # flags
 CFLAGS	+= -std=c11 -O2 -fPIC -Wall -Werror
 CFLAGS_EXTRA	+= -lpthread
+CFLAGS_EXTRA	+= $(shell pkg-config --libs --cflags libsystemd)
 CFLAGS_EXTRA	+= $(shell pkg-config --libs --cflags libcurl)
 CFLAGS_EXTRA	+= $(shell pkg-config --libs --cflags avahi-client)
 CFLAGS_EXTRA	+= $(shell pkg-config --libs --cflags libmicrohttpd)
diff --git a/pacredir.c b/pacredir.c
index b704f1c..afb9e8f 100644
--- a/pacredir.c
+++ b/pacredir.c
@@ -720,6 +720,9 @@ int main(int argc, char ** argv) {
 	signal(SIGKILL, sig_callback);
 	signal(SIGINT, sig_callback);
 
+	/* report ready to systemd */
+	sd_notifyf(0, "READY=1\nSTATUS=Waiting for requests to redirect...\nMAINPID=%lu", (unsigned long) getpid());
+
 	/* run the main loop */
 	avahi_simple_poll_loop(simple_poll);
 
diff --git a/pacredir.h b/pacredir.h
index e412db7..7dead59 100644
--- a/pacredir.h
+++ b/pacredir.h
@@ -24,6 +24,9 @@
 #include <sys/stat.h>
 #include <time.h>
 
+/* systemd headers */
+#include <systemd/sd-daemon.h>
+
 /* Avahi headers */
 #include <avahi-client/lookup.h>
 #include <avahi-common/error.h>
diff --git a/systemd/pacredir.service b/systemd/pacredir.service
index c64a5d5..bc5a13f 100644
--- a/systemd/pacredir.service
+++ b/systemd/pacredir.service
@@ -4,6 +4,7 @@ Requires=avahi-daemon.service
 After=avahi-daemon.service network.target network-online.target
 
 [Service]
+Type=notify
 User=nobody
 Group=nobody
 ExecStart=/usr/bin/pacredir
-- 
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