void
initialize(int argc, char **argv)
{
SET_PROGNAME();
bi_vars_init(); /* load the builtin variables */
bi_funct_init(); /* load the builtin functions */
kw_init(); /* load the keywords */
field_init();
#if USE_BINMODE
{
char *p = getenv("MAWKBINMODE");
if (p)
set_binmode(atoi(p));
}
#endif
process_cmdline(argc, argv);
code_init();
fpe_init();
set_stdio();
#if USE_BINMODE
stdout_init();
#endif
}
static void set_console(void)
{
const char* tty;
char* split;
char line[ 20 ];
const char* try[] = { "tty0", "console", NULL }; /* Try the most common outputs */
int f, i = 0;
tty = get_cmdline_val("console",line,sizeof(line));
if (tty != NULL) {
split = strchr(tty, ',');
if ( split != NULL )
*split = '\0';
} else {
// Try a default
tty=try[i];
i++;
}
if (chdir("/dev")) {
ERROR("failed to change dir to /dev\n");
return;
}
while (tty!=NULL) {
f = open(tty, O_RDONLY);
if (f >= 0) {
close(f);
break;
}
tty=try[i];
i++;
}
if (chdir("/"))
ERROR("failed to change dir to /\n");
if (tty != NULL)
set_stdio(tty);
}
static void state_enter(void)
{
char ubus_cmd[] = "/sbin/ubusd";
switch (state) {
case STATE_EARLY:
LOG("- early -\n");
watchdog_init(0);
hotplug("/etc/hotplug.json");
procd_coldplug();
break;
case STATE_UBUS:
// try to reopen incase the wdt was not available before coldplug
watchdog_init(0);
set_stdio("console");
LOG("- ubus -\n");
procd_connect_ubus();
service_start_early("ubus", ubus_cmd);
break;
case STATE_INIT:
LOG("- init -\n");
procd_inittab();
procd_inittab_run("respawn");
procd_inittab_run("askconsole");
procd_inittab_run("askfirst");
procd_inittab_run("sysinit");
// switch to syslog log channel
ulog_open(ULOG_SYSLOG, LOG_DAEMON, "procd");
break;
case STATE_RUNNING:
LOG("- init complete -\n");
break;
case STATE_SHUTDOWN:
/* Redirect output to the console for the users' benefit */
set_console();
LOG("- shutdown -\n");
procd_inittab_run("shutdown");
sync();
break;
case STATE_HALT:
// To prevent killed processes from interrupting the sleep
signal(SIGCHLD, SIG_IGN);
LOG("- SIGTERM processes -\n");
kill(-1, SIGTERM);
sync();
sleep(1);
LOG("- SIGKILL processes -\n");
kill(-1, SIGKILL);
sync();
sleep(1);
#ifndef DISABLE_INIT
if (reboot_event == RB_POWER_OFF)
LOG("- power down -\n");
else
LOG("- reboot -\n");
/* Allow time for last message to reach serial console, etc */
sleep(1);
/* We have to fork here, since the kernel calls do_exit(EXIT_SUCCESS)
* in linux/kernel/sys.c, which can cause the machine to panic when
* the init process exits... */
if (!vfork( )) { /* child */
reboot(reboot_event);
_exit(EXIT_SUCCESS);
}
while (1)
sleep(1);
#else
exit(0);
#endif
break;
default:
ERROR("Unhandled state %d\n", state);
return;
};
}
void procd_state_next(void)
{
DEBUG(4, "Change state %d -> %d\n", state, state + 1);
state++;
state_enter();
}
void procd_state_ubus_connect(void)
{
if (state == STATE_UBUS)
procd_state_next();
}
void procd_shutdown(int event)
{
if (state >= STATE_SHUTDOWN)
return;
DEBUG(2, "Shutting down system with event %x\n", event);
reboot_event = event;
state = STATE_SHUTDOWN;
state_enter();
}
