finit: add finit state machine

Signed-off-by: Jonas Johansson <jonas.johansson@westermo.se>

sm.c

@@ -0,0 +1,66 @@
+/* Finit state machine
+ *
+ * Copyright (c) 2016  xxx
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "config.h"		/* Generated by configure script */
+
+#include <sys/types.h>
+
+#include "finit.h"
+#include "helpers.h"
+#include "service.h"
+#include "sm.h"
+
+void sm_init(sm_t *sm)
+{
+	sm->state = SM_BOOTSTRAP_STATE;
+}
+
+void sm_step(sm_t *sm)
+{
+	sm_state_t old_state;
+
+restart:
+	old_state = sm->state;
+
+	switch(sm->state) {
+	case SM_BOOTSTRAP_STATE:
+		_d("Bootstrapping all services in runlevel S from %s", FINIT_CONF);
+		service_step_all(SVC_TYPE_RUN | SVC_TYPE_TASK | SVC_TYPE_SERVICE);
+		sm->state = SM_RUNNING_STATE;
+		break;
+
+	case SM_RUNNING_STATE:
+		break;
+	}
+
+	if (sm->state != old_state) {
+		goto restart;
+	}
+}
+
+/**
+ * Local Variables:
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */