overlay: Detach from terminal

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 8 insertions, 1 deletions

diff --git a/overlay/overlay.c b/overlay/overlay.c
index a1d21df0..67c4a86c 100644
--- a/overlay/overlay.c
+++ b/overlay/overlay.c
@@ -734,12 +734,13 @@ int main(int argc, char **argv)
 	struct overlay_context ctx;
 	struct config config;
 	int index, sample_period;
+	int daemonize = 1;
 	int i;
 
 	config_init(&config);
 
 	opterr = 0;
-	while ((i = getopt_long(argc, argv, "c:", long_options, &index)) != -1) {
+	while ((i = getopt_long(argc, argv, "c:f", long_options, &index)) != -1) {
 		switch (i) {
 		case 'c':
 			config_parse_string(&config, optarg);
@@ -750,6 +751,9 @@ int main(int argc, char **argv)
 		case 'P':
 			config_set_value(&config, "window", "position", optarg);
 			break;
+		case 'f':
+			daemonize = 0;
+			break;
 		}
 	}
 
@@ -770,6 +774,9 @@ int main(int argc, char **argv)
 	if (ctx.surface == NULL)
 		return ENOMEM;
 
+	if (daemonize && daemon(0, 0))
+		return EINVAL;
+
 	signal(SIGUSR1, signal_snapshot);
 
 	debugfs_init();