int do_powerctl(int nargs, char **args)
{
char command[PROP_VALUE_MAX];
int res;
int len = 0;
int cmd = 0;
const char *reboot_target;
void (*callback_on_ro_remount)(const struct mntent*) = NULL;
res = expand_props(command, args[1], sizeof(command));
if (res) {
ERROR("powerctl: cannot expand '%s'\n", args[1]);
return -EINVAL;
}
if (strncmp(command, "shutdown", 8) == 0) {
if (property_get_bool("init.shutdown_to_charging", false)) {
return android_reboot(ANDROID_RB_RESTART2, 0, "charging");
}
cmd = ANDROID_RB_POWEROFF;
len = 8;
callback_on_ro_remount = unmount_and_fsck;
} else if (strncmp(command, "reboot", 6) == 0) {
cmd = ANDROID_RB_RESTART2;
len = 6;
} else {
ERROR("powerctl: unrecognized command '%s'\n", command);
return -EINVAL;
}
if (command[len] == ',') {
char prop_value[PROP_VALUE_MAX] = {0};
reboot_target = &command[len + 1];
if ((property_get("init.svc.recovery", prop_value) == 0) &&
(strncmp(reboot_target, "keys", 4) == 0)) {
ERROR("powerctl: permission denied\n");
return -EINVAL;
}
} else if (command[len] == '\0') {
reboot_target = "";
} else {
ERROR("powerctl: unrecognized reboot target '%s'\n", &command[len]);
return -EINVAL;
}
return android_reboot_with_callback(cmd, 0, reboot_target,
callback_on_ro_remount);
}
static int do_powerctl(const std::vector<std::string>& args) {
const char* command = args[1].c_str();
int len = 0;
unsigned int cmd = 0;
const char *reboot_target = "";
void (*callback_on_ro_remount)(const struct mntent*) = NULL;
if (strncmp(command, "shutdown", 8) == 0) {
cmd = ANDROID_RB_POWEROFF;
len = 8;
} else if (strncmp(command, "reboot", 6) == 0) {
cmd = ANDROID_RB_RESTART2;
len = 6;
} else {
ERROR("powerctl: unrecognized command '%s'\n", command);
return -EINVAL;
}
if (command[len] == ',') {
if (cmd == ANDROID_RB_POWEROFF &&
!strcmp(&command[len + 1], "userrequested")) {
// The shutdown reason is PowerManager.SHUTDOWN_USER_REQUESTED.
// Run fsck once the file system is remounted in read-only mode.
callback_on_ro_remount = unmount_and_fsck;
} else if (cmd == ANDROID_RB_RESTART2) {
reboot_target = &command[len + 1];
}
} else if (command[len] != '\0') {
ERROR("powerctl: unrecognized reboot target '%s'\n", &command[len]);
return -EINVAL;
}
std::string timeout = property_get("ro.build.shutdown_timeout");
unsigned int delay = 0;
if (android::base::ParseUint(timeout.c_str(), &delay) && delay > 0) {
Timer t;
// Ask all services to terminate.
ServiceManager::GetInstance().ForEachService(
[] (Service* s) { s->Terminate(); });
while (t.duration() < delay) {
ServiceManager::GetInstance().ReapAnyOutstandingChildren();
int service_count = 0;
ServiceManager::GetInstance().ForEachService(
[&service_count] (Service* s) {
// Count the number of services running.
// Exclude the console as it will ignore the SIGTERM signal
// and not exit.
// Note: SVC_CONSOLE actually means "requires console" but
// it is only used by the shell.
if (s->pid() != 0 && (s->flags() & SVC_CONSOLE) == 0) {
service_count++;
}
});
if (service_count == 0) {
// All terminable services terminated. We can exit early.
break;
}
// Wait a bit before recounting the number or running services.
usleep(kTerminateServiceDelayMicroSeconds);
}
NOTICE("Terminating running services took %.02f seconds", t.duration());
}
return android_reboot_with_callback(cmd, 0, reboot_target,
callback_on_ro_remount);
}
