2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
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
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.
16 #include <sys/reboot.h>
20 #include <sys/types.h>
25 #include "plug/hotplug.h"
27 #include "service/service.h"
28 #include "utils/utils.h"
41 static int state
= STATE_NONE
;
42 static int reboot_event
;
44 static void set_stdio(const char* tty
)
47 !freopen(tty
, "r", stdin
) ||
48 !freopen(tty
, "w", stdout
) ||
49 !freopen(tty
, "w", stderr
) ||
51 ERROR("failed to set stdio\n");
53 fcntl(STDERR_FILENO
, F_SETFL
, fcntl(STDERR_FILENO
, F_GETFL
) | O_NONBLOCK
);
56 static void set_console(void)
61 const char* try[] = { "tty0", "console", NULL
}; /* Try the most common outputs */
64 tty
= get_cmdline_val("console",line
,sizeof(line
));
66 split
= strchr(tty
, ',');
76 ERROR("failed to change dir to /dev\n");
80 f
= open(tty
, O_RDONLY
);
90 ERROR("failed to change dir to /\n");
96 static void state_enter(void)
98 char ubus_cmd
[] = "/sbin/ubusd";
104 hotplug("/etc/hotplug.json");
109 // try to reopen incase the wdt was not available before coldplug
111 set_stdio("console");
113 procd_connect_ubus();
115 service_start_early("ubus", ubus_cmd
);
121 procd_inittab_run("respawn");
122 procd_inittab_run("askconsole");
123 procd_inittab_run("askfirst");
124 procd_inittab_run("sysinit");
126 // switch to syslog log channel
127 ulog_open(ULOG_SYSLOG
, LOG_DAEMON
, "procd");
131 LOG("- init complete -\n");
135 /* Redirect output to the console for the users' benefit */
137 LOG("- shutdown -\n");
138 procd_inittab_run("shutdown");
143 // To prevent killed processes from interrupting the sleep
144 signal(SIGCHLD
, SIG_IGN
);
145 LOG("- SIGTERM processes -\n");
149 LOG("- SIGKILL processes -\n");
153 if (reboot_event
== RB_POWER_OFF
)
154 LOG("- power down -\n");
158 /* Allow time for last message to reach serial console, etc */
161 /* We have to fork here, since the kernel calls do_exit(EXIT_SUCCESS)
162 * in linux/kernel/sys.c, which can cause the machine to panic when
163 * the init process exits... */
164 if (!vfork( )) { /* child */
165 reboot(reboot_event
);
174 ERROR("Unhandled state %d\n", state
);
179 void procd_state_next(void)
181 DEBUG(4, "Change state %d -> %d\n", state
, state
+ 1);
186 void procd_state_ubus_connect(void)
188 if (state
== STATE_UBUS
)
192 void procd_shutdown(int event
)
194 if (state
>= STATE_SHUTDOWN
)
196 DEBUG(2, "Shutting down system with event %x\n", event
);
197 reboot_event
= event
;
198 state
= STATE_SHUTDOWN
;