[gnome-keyring] daemon: Use setsid() to become a process leader when daemonizing

[Stefan Walter <stefw src gnome org>]

commit 26a694b1a18a92580d211ec2d18803af0ad05d99
Author: Yclept Nemo <orbisvicis gmail com>
Date:   Wed Jul 18 07:58:11 2012 +0200

    daemon: Use setsid() to become a process leader when daemonizing
    
     * Fixes corner cases where people try to use gnome-keyring-daemon
       from the console.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=679892

 daemon/gkd-main.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gkd-main.c b/daemon/gkd-main.c
index f081fb8..da71da7 100644
--- a/daemon/gkd-main.c
+++ b/daemon/gkd-main.c
@@ -679,6 +679,13 @@ fork_and_print_environment (void)
 
 	if (run_daemonized) {
 
+		/*
+		 * Become session leader of a new session, process group leader of a new
+		 * process group, and detach from the controlling TTY, so that SIGHUP is
+		 * not sent to this process when the previous session leader dies
+		 */
+		setsid ();
+
 		/* Double fork if need to daemonize properly */
 		pid = fork ();