8fe931eae5deeac85ee0b2fd19445815ef00bf5d
[project/procd.git] / state.c
1 /*
2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
7 * as published by the Free Software Foundation
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15 #include <sys/reboot.h>
16 #include <stdlib.h>
17 #include <unistd.h>
18
19 #include "procd.h"
20 #include "syslog.h"
21 #include "hotplug.h"
22 #include "watchdog.h"
23
24 enum {
25 STATE_NONE = 0,
26 STATE_EARLY,
27 STATE_INIT,
28 STATE_RUNNING,
29 STATE_SHUTDOWN,
30 STATE_HALT,
31 __STATE_MAX,
32 };
33
34 static int state = STATE_NONE;
35 static int reboot_event;
36
37 static void state_enter(void)
38 {
39
40 switch (state) {
41 case STATE_EARLY:
42 LOG("- early -\n");
43 watchdog_init();
44 hotplug("/etc/hotplug.json");
45 procd_coldplug();
46 break;
47
48 case STATE_INIT:
49 LOG("- init -\n");
50 log_init();
51 procd_connect_ubus();
52 procd_inittab();
53 procd_inittab_run("askconsole");
54 procd_inittab_run("askfirst");
55 procd_inittab_run("sysinit");
56 break;
57
58 case STATE_RUNNING:
59 LOG("- init complete -\n");
60 break;
61
62 case STATE_SHUTDOWN:
63 LOG("- shutdown -\n");
64 procd_inittab_run("shutdown");
65 break;
66
67 case STATE_HALT:
68 LOG("- reboot -\n");
69 sync();
70 sleep(1);
71 reboot(reboot_event);
72 break;
73
74 default:
75 ERROR("Unhandled state %d\n", state);
76 return;
77 };
78 }
79
80 void procd_state_next(void)
81 {
82 DEBUG(2, "Change state %d -> %d\n", state, state + 1);
83 state++;
84 state_enter();
85 }
86
87 void procd_shutdown(int event)
88 {
89 DEBUG(1, "Shutting down system with event %x\n", reboot_event);
90 reboot_event = event;
91 state = STATE_SHUTDOWN;
92 state_enter();
93 }