static int device_add_udev_wants(Unit *u, struct udev_device *dev) {
const char *wants, *property, *p;
int r;
assert(u);
assert(dev);
property = MANAGER_IS_USER(u->manager) ? "SYSTEMD_USER_WANTS" : "SYSTEMD_WANTS";
wants = udev_device_get_property_value(dev, property);
for (p = wants;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
if (r == 0)
return 0;
if (r == -ENOMEM)
return log_oom();
if (r < 0)
return log_unit_error_errno(u, r, "Failed to add parse %s: %m", property);
r = unit_name_mangle(word, UNIT_NAME_NOGLOB, &k);
if (r < 0)
return log_unit_error_errno(u, r, "Failed to mangle unit name \"%s\": %m", word);
r = unit_add_dependency_by_name(u, UNIT_WANTS, k, NULL, true);
if (r < 0)
return log_unit_error_errno(u, r, "Failed to add wants dependency: %m");
}
}
int emergency_action(
Manager *m,
EmergencyAction action,
EmergencyActionFlags options,
const char *reboot_arg,
int exit_status,
const char *reason) {
assert(m);
assert(action >= 0);
assert(action < _EMERGENCY_ACTION_MAX);
if (action == EMERGENCY_ACTION_NONE)
return -ECANCELED;
if (FLAGS_SET(options, EMERGENCY_ACTION_IS_WATCHDOG) && !m->service_watchdogs) {
log_warning("Watchdog disabled! Not acting on: %s", reason);
return -ECANCELED;
}
bool warn = FLAGS_SET(options, EMERGENCY_ACTION_WARN);
switch (action) {
case EMERGENCY_ACTION_REBOOT:
log_and_status(m, warn, "Rebooting", reason);
(void) update_reboot_parameter_and_warn(reboot_arg);
(void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL);
break;
case EMERGENCY_ACTION_REBOOT_FORCE:
log_and_status(m, warn, "Forcibly rebooting", reason);
(void) update_reboot_parameter_and_warn(reboot_arg);
m->objective = MANAGER_REBOOT;
break;
case EMERGENCY_ACTION_REBOOT_IMMEDIATE:
log_and_status(m, warn, "Rebooting immediately", reason);
sync();
if (!isempty(reboot_arg)) {
log_info("Rebooting with argument '%s'.", reboot_arg);
(void) raw_reboot(LINUX_REBOOT_CMD_RESTART2, reboot_arg);
log_warning_errno(errno, "Failed to reboot with parameter, retrying without: %m");
}
log_info("Rebooting.");
(void) reboot(RB_AUTOBOOT);
break;
case EMERGENCY_ACTION_EXIT:
if (exit_status >= 0)
m->return_value = exit_status;
if (MANAGER_IS_USER(m) || detect_container() > 0) {
log_and_status(m, warn, "Exiting", reason);
(void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_EXIT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL);
break;
}
log_notice("Doing \"poweroff\" action instead of an \"exit\" emergency action.");
_fallthrough_;
case EMERGENCY_ACTION_POWEROFF:
log_and_status(m, warn, "Powering off", reason);
(void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL);
break;
case EMERGENCY_ACTION_EXIT_FORCE:
if (exit_status >= 0)
m->return_value = exit_status;
if (MANAGER_IS_USER(m) || detect_container() > 0) {
log_and_status(m, warn, "Exiting immediately", reason);
m->objective = MANAGER_EXIT;
break;
}
log_notice("Doing \"poweroff-force\" action instead of an \"exit-force\" emergency action.");
_fallthrough_;
case EMERGENCY_ACTION_POWEROFF_FORCE:
log_and_status(m, warn, "Forcibly powering off", reason);
m->objective = MANAGER_POWEROFF;
break;
case EMERGENCY_ACTION_POWEROFF_IMMEDIATE:
log_and_status(m, warn, "Powering off immediately", reason);
sync();
log_info("Powering off.");
(void) reboot(RB_POWER_OFF);
break;
default:
assert_not_reached("Unknown emergency action");
}
return -ECANCELED;
}
