* GNU General Public License for more details.
*/
+#include <fcntl.h>
#include <sys/reboot.h>
+#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
+#include <sys/types.h>
+#include <signal.h>
#include "procd.h"
#include "syslog.h"
-#include "hotplug.h"
+#include "plug/hotplug.h"
#include "watchdog.h"
+#include "service/service.h"
+#include "utils/utils.h"
enum {
STATE_NONE = 0,
STATE_EARLY,
+ STATE_UBUS,
STATE_INIT,
STATE_RUNNING,
STATE_SHUTDOWN,
static int state = STATE_NONE;
static int reboot_event;
+static void set_stdio(const char* tty)
+{
+ chdir("/dev");
+ freopen(tty, "r", stdin);
+ freopen(tty, "w", stdout);
+ freopen(tty, "w", stderr);
+ chdir("/");
+ fcntl(STDERR_FILENO, F_SETFL, fcntl(STDERR_FILENO, F_GETFL) | O_NONBLOCK);
+}
+
+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++;
+ }
+
+ chdir("/dev");
+ while (tty!=NULL) {
+ f = open(tty, O_RDONLY);
+ if (f >= 0) {
+ close(f);
+ break;
+ }
+
+ tty=try[i];
+ i++;
+ }
+ chdir("/");
+
+ 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();
+ 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_init();
+ service_start_early("ubus", ubus_cmd);
+ break;
+
case STATE_INIT:
LOG("- init -\n");
- log_init();
- procd_connect_ubus();
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:
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:
- LOG("- reboot -\n");
+ // To prevent killed processes from interrupting the sleep
+ signal(SIGCHLD, SIG_IGN);
+ LOG("- SIGTERM processes -\n");
+ kill(-1, SIGTERM);
sync();
sleep(1);
- reboot(reboot_event);
+ LOG("- SIGKILL processes -\n");
+ kill(-1, SIGKILL);
+ sync();
+ sleep(1);
+ 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);
break;
default:
void procd_state_next(void)
{
- DEBUG(2, "Change state %d -> %d\n", state, state + 1);
+ 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)
{
- DEBUG(1, "Shutting down system with event %x\n", reboot_event);
+ if (state >= STATE_SHUTDOWN)
+ return;
+ DEBUG(2, "Shutting down system with event %x\n", event);
reboot_event = event;
state = STATE_SHUTDOWN;
state_enter();