From f8ea392738ec16ce4633bd91f8fc6e2d301c329c Mon Sep 17 00:00:00 2001
From: MatMoul <matmoul@gmail.com>
Date: Sun, 14 May 2017 18:55:16 +0200
Subject: [PATCH] fork two time, daemon unit

---
 sample_scenarios/scenario0         |  6 +++---
 src/helpers/daemonizer.cpp         | 25 ++++++++++++++++++++++---
 systemd/g810-led-scenarios.service |  9 +++++----
 3 files changed, 30 insertions(+), 10 deletions(-)

diff --git a/sample_scenarios/scenario0 b/sample_scenarios/scenario0
index 3a42512..2403b35 100644
--- a/sample_scenarios/scenario0
+++ b/sample_scenarios/scenario0
@@ -1,6 +1,6 @@
-p sample_profiles/all_blue
+p /etc/g810-led/sample_profiles/all_blue
 w 1000
-p sample_profiles/all_green
+p /etc/g810-led/sample_profiles/all_green
 w 1000
-p sample_profiles/all_red
+p /etc/g810-led/sample_profiles/all_red
 w 1000
diff --git a/src/helpers/daemonizer.cpp b/src/helpers/daemonizer.cpp
index 5038f31..5640efa 100644
--- a/src/helpers/daemonizer.cpp
+++ b/src/helpers/daemonizer.cpp
@@ -17,16 +17,35 @@ namespace daemonizer {
 	
 	void start(char *arg0, std::string scenarioFile) {
 		pid_t pid, sid;
+		
+		pid = fork();
+		if (pid < 0) exit(EXIT_FAILURE);
+		if (pid > 0) exit(EXIT_SUCCESS);
+		sid = setsid();
+		if (sid < 0) exit(EXIT_FAILURE);
+		signal(SIGCHLD,SIG_IGN); /* ignore child */
+		signal(SIGHUP,SIG_IGN); /* ignore child */
+		
+		
 		pid = fork();
 		if (pid < 0) exit(EXIT_FAILURE);
 		if (pid > 0) exit(EXIT_SUCCESS);
 		umask(0);
-		sid = setsid();
-		if (sid < 0) exit(EXIT_FAILURE);
+		if (chdir("/") < 0) exit(EXIT_FAILURE);
 		
-		//signal(SIGINT, stop);
 		std::cout<<getpid()<<std::endl;
 		
+		close(STDIN_FILENO);
+		close(STDOUT_FILENO);
+		close(STDERR_FILENO);
+		
+		signal(SIGCHLD,SIG_IGN); /* ignore child */
+		signal(SIGHUP,SIG_IGN); /* ignore child */
+		signal(SIGTSTP,SIG_IGN); /* ignore tty signals */
+		signal(SIGTTOU,SIG_IGN);
+		signal(SIGTTIN,SIG_IGN);		
+		//signal(SIGINT, stop);
+		
 		LedKeyboard kbd;
 		kbd.open();
 		while(true){
diff --git a/systemd/g810-led-scenarios.service b/systemd/g810-led-scenarios.service
index d639d04..2e7078c 100644
--- a/systemd/g810-led-scenarios.service
+++ b/systemd/g810-led-scenarios.service
@@ -2,10 +2,11 @@
 Description=Logitech G810 Led Scenarios
 
 [Service]
-#ExecStart=/usr/bin/g810-led --daemon /etc/g810-led/scenario
-#ExecSop=kill -2 pid
-#Type=oneshot
-#RemainAfterExit=yes
+ExecStartPre=/usr/bin/cp /etc/g810-led/scenario /tmp/g810-led-scenario
+ExecStartPre=/usr/bin/chmod 666 /tmp/g810-led-scenario
+ExecStart=/usr/bin/g810-led --daemon /tmp/g810-led-scenario
+ExecStopPost=/usr/bin/rm /tmp/g810-led-scenario
+Type=forking
 
 [Install]
 WantedBy=multi-user.target