From 76aae4fce586b400f5fe08df31497db19d624609 Mon Sep 17 00:00:00 2001 From: Jan Rybar Date: Thu, 1 Aug 2019 06:46:10 +0000 Subject: [PATCH] pkttyagent: process stopped by SIGTTOU if run in background job --- src/programs/pkttyagent.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/programs/pkttyagent.c b/src/programs/pkttyagent.c index 3c8d502..13879a2 100644 --- a/src/programs/pkttyagent.c +++ b/src/programs/pkttyagent.c @@ -264,6 +264,12 @@ main (int argc, char *argv[]) memset (&sa, 0, sizeof (sa)); sa.sa_handler = &tty_handler; +/* If tty_handler() resets terminal while pkttyagent is run in background job, + the process gets stopped by SIGTTOU. This impacts systemctl, hence it must + be blocked for a while and then the process gets killed anyway. + */ + sigemptyset(&sa.sa_mask); + sigaddset(&sa.sa_mask, SIGTTOU); sigaction (SIGTERM, &sa, &savesigterm); sigaction (SIGINT, &sa, &savesigint); sigaction (SIGTSTP, &sa, &savesigtstp); -- 2.20.1