openrc-run: Use SIGUSR1 to skip marking.

The current code for mark_service comments that a service marking itself
should make openrc-run skip marking it based on the exit code, but
openrc-run does not respect the signal.

src/mark_service/mark_service.c

@@ -63,7 +63,7 @@ int main(int argc, char **argv)
 	if (ok && svcname && strcmp(svcname, service) == 0) {
 		openrc_pid = getenv("RC_OPENRC_PID");
 		if (openrc_pid && sscanf(openrc_pid, "%d", &pid) == 1)
-			if (kill(pid, SIGHUP) != 0)
+			if (kill(pid, SIGUSR1) != 0)
 				eerror("%s: failed to signal parent %d: %s",
 				    applet, pid, strerror(errno));
 

src/openrc-run/openrc-run.c

@@ -92,7 +92,7 @@ static RC_STRINGLIST *use_services;
 static RC_STRINGLIST *want_services;
 static RC_HOOK hook_out;
 static int exclusive_fd = -1, master_tty = -1;
-static bool sighup, in_background, deps, dry_run;
+static bool sighup, skip_mark, in_background, deps, dry_run;
 static pid_t service_pid;
 static int signal_pipe[2] = { -1, -1 };
 
@@ -117,6 +117,10 @@ handle_signal(int sig)
 		sighup = true;
 		break;
 
+	case SIGUSR1:
+		skip_mark = true;
+		break;
+
 	case SIGCHLD:
 		while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
 			if (signal_pipe[1] > -1 && pid == service_pid) {
@@ -802,6 +806,7 @@ static void svc_start_real(void)
 		setenv("IN_BACKGROUND", ibsave, 1);
 	hook_out = RC_HOOK_SERVICE_START_DONE;
 	rc_plugin_run(RC_HOOK_SERVICE_START_NOW, applet);
+	skip_mark = false;
 	started = (svc_exec("start", NULL) == 0);
 	if (ibsave)
 		unsetenv("IN_BACKGROUND");
@@ -811,7 +816,8 @@ static void svc_start_real(void)
 	else if (!started)
 		eerrorx("ERROR: %s failed to start", applet);
 
-	rc_service_mark(service, RC_SERVICE_STARTED);
+	if (!skip_mark)
+		rc_service_mark(service, RC_SERVICE_STARTED);
 	exclusive_fd = svc_unlock(applet, exclusive_fd);
 	hook_out = RC_HOOK_SERVICE_START_OUT;
 	rc_plugin_run(RC_HOOK_SERVICE_START_DONE, applet);
@@ -1008,18 +1014,20 @@ svc_stop_real(void)
 		setenv("IN_BACKGROUND", ibsave, 1);
 	hook_out = RC_HOOK_SERVICE_STOP_DONE;
 	rc_plugin_run(RC_HOOK_SERVICE_STOP_NOW, applet);
+	skip_mark = false;
 	stopped = (svc_exec("stop", NULL) == 0);
 	if (ibsave)
 		unsetenv("IN_BACKGROUND");
 
 	if (!stopped)
 		eerrorx("ERROR: %s failed to stop", applet);
 
-	if (in_background)
-		rc_service_mark(service, RC_SERVICE_INACTIVE);
-	else
-		rc_service_mark(service, RC_SERVICE_STOPPED);
-
+	if (!skip_mark) {
+		if (in_background)
+		    rc_service_mark(service, RC_SERVICE_INACTIVE);
+		else
+		    rc_service_mark(service, RC_SERVICE_STOPPED);
+	}
 	hook_out = RC_HOOK_SERVICE_STOP_OUT;
 	rc_plugin_run(RC_HOOK_SERVICE_STOP_DONE, applet);
 	hook_out = 0;
@@ -1275,6 +1283,7 @@ int main(int argc, char **argv)
 
 	/* Setup a signal handler */
 	signal_setup(SIGHUP, handle_signal);
+	signal_setup(SIGUSR1, handle_signal);
 	signal_setup(SIGINT, handle_signal);
 	signal_setup(SIGQUIT, handle_signal);
 	signal_setup(SIGTERM, handle_signal);