add state handler

1 files changed, 93 insertions, 0 deletions

diff --git a/state.c b/state.c
new file mode 100644
index 0000000..1abcbca
--- /dev/null
+++ b/state.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <sys/reboot.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "procd.h"
+#include "syslog.h"
+#include "hotplug.h"
+#include "watchdog.h"
+
+enum {
+	STATE_NONE = 0,
+	STATE_EARLY,
+	STATE_INIT,
+	STATE_RUNNING,
+	STATE_SHUTDOWN,
+	STATE_HALT,
+	__STATE_MAX,
+};
+
+static int state = STATE_NONE;
+static int reboot_event;
+
+static void state_enter(void)
+{
+
+	switch (state) {
+	case STATE_EARLY:
+		LOG("- early -\n");
+		watchdog_init();
+		hotplug("/etc/hotplug.json");
+		procd_coldplug();
+		break;
+
+	case STATE_INIT:
+		LOG("- init -\n");
+		log_init();
+		procd_connect_ubus();
+		procd_inittab();
+		procd_inittab_run("askconsole");
+		procd_inittab_run("askfirst");
+		procd_inittab_run("sysinit");
+		break;
+
+	case STATE_RUNNING:
+		LOG("- init complete -\n");
+		break;
+
+	case STATE_SHUTDOWN:
+		LOG("- shutdown -\n");
+		procd_inittab_run("shutdown");
+		break;
+
+	case STATE_HALT:
+		LOG("- reboot -\nprocd says good bye !\n");
+		sync();
+		sleep(1);
+		reboot(reboot_event);
+		break;
+
+	default:
+		ERROR("Unhandled state %d\n", state);
+		return;
+	};
+}
+
+void procd_state_next(void)
+{
+	DEBUG(2, "Change state %d -> %d\n", state, state + 1);
+	state++;
+	state_enter();
+}
+
+void procd_shutdown(int event)
+{
+	DEBUG(1, "Shutting down system with event %x\n", reboot_event);
+	reboot_event = event;
+	state = STATE_SHUTDOWN;
+	state_enter();
+}