Prevent panel and background from being started accidentally

apps/background.c

@@ -39,6 +39,16 @@ static void resize_finish_wallpaper(int width, int height) {
 
 int main (int argc, char ** argv) {
 
+	if (argc < 2 || strcmp(argv[1],"--really")) {
+		fprintf(stderr,
+				"%s: Desktop environment wallpaper\n"
+				"\n"
+				" Renders the desktop wallpaper. You probably don't want\n"
+				" to be running this directly - it is started by the\n"
+				" session manager along with the panel.\n", argv[0]);
+		return 1;
+	}
+
 	wallpaper = malloc(sizeof(sprite_t));
 	load_sprite(wallpaper, "/usr/share/wallpaper.bmp");
 	wallpaper->alpha = 0;

apps/panel.c

@@ -833,6 +833,17 @@ static void sig_usr2(int sig) {
 }
 
 int main (int argc, char ** argv) {
+	if (argc < 2 || strcmp(argv[1],"--really")) {
+		fprintf(stderr,
+				"%s: Desktop environment panel / dock\n"
+				"\n"
+				" Renders the application menu, window list, widgets,\n"
+				" alt-tab window switcher, clock, etc.\n"
+				" You probably don't want to run this directly - it is\n"
+				" started automatically by the session manager.\n", argv[0]);
+		return 1;
+	}
+
 	/* Connect to window server */
 	yctx = yutani_init();
 

apps/session.c

@@ -7,16 +7,15 @@
 #include <sys/wait.h>
 
 int main(int argc, char * argv[]) {
-
 	int _background_pid = fork();
 	if (!_background_pid) {
-		char * args[] = {"/bin/background", NULL};
+		char * args[] = {"/bin/background", "--really", NULL};
 		execvp(args[0], args);
 	}
 
 	int _panel_pid = fork();
 	if (!_panel_pid) {
-		char * args[] = {"/bin/panel", NULL};
+		char * args[] = {"/bin/panel", "--really", NULL};
 		execvp(args[0], args);
 	}