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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2014 Lennart Poettering
Copyright 2012 Michael Olbrich
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <sys/reboot.h>
#include <linux/reboot.h>
#include "bus-error.h"
#include "bus-util.h"
#include "emergency-action.h"
#include "special.h"
#include "string-table.h"
#include "terminal-util.h"
static void log_and_status(Manager *m, const char *message, const char *reason) {
log_warning("%s: %s", message, reason);
manager_status_printf(m, STATUS_TYPE_EMERGENCY,
ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
"%s: %s", message, reason);
}
int emergency_action(
Manager *m,
EmergencyAction action,
const char *reboot_arg,
const char *reason) {
assert(m);
assert(action >= 0);
assert(action < _EMERGENCY_ACTION_MAX);
if (action == EMERGENCY_ACTION_NONE)
return -ECANCELED;
if (!m->service_watchdogs) {
log_warning("Watchdog disabled! Not acting on: %s", reason);
return -ECANCELED;
}
if (!MANAGER_IS_SYSTEM(m)) {
/* Downgrade all options to simply exiting if we run
* in user mode */
log_warning("Exiting: %s", reason);
m->exit_code = MANAGER_EXIT;
return -ECANCELED;
}
switch (action) {
case EMERGENCY_ACTION_REBOOT:
log_and_status(m, "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, "Forcibly rebooting", reason);
(void) update_reboot_parameter_and_warn(reboot_arg);
m->exit_code = MANAGER_REBOOT;
break;
case EMERGENCY_ACTION_REBOOT_IMMEDIATE:
log_and_status(m, "Rebooting immediately", reason);
sync();
if (!isempty(reboot_arg)) {
log_info("Rebooting with argument '%s'.", reboot_arg);
syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, reboot_arg);
log_warning_errno(errno, "Failed to reboot with parameter, retrying without: %m");
}
log_info("Rebooting.");
reboot(RB_AUTOBOOT);
break;
case EMERGENCY_ACTION_POWEROFF:
log_and_status(m, "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_POWEROFF_FORCE:
log_and_status(m, "Forcibly powering off", reason);
m->exit_code = MANAGER_POWEROFF;
break;
case EMERGENCY_ACTION_POWEROFF_IMMEDIATE:
log_and_status(m, "Powering off immediately", reason);
sync();
log_info("Powering off.");
reboot(RB_POWER_OFF);
break;
default:
assert_not_reached("Unknown emergency action");
}
return -ECANCELED;
}
static const char* const emergency_action_table[_EMERGENCY_ACTION_MAX] = {
[EMERGENCY_ACTION_NONE] = "none",
[EMERGENCY_ACTION_REBOOT] = "reboot",
[EMERGENCY_ACTION_REBOOT_FORCE] = "reboot-force",
[EMERGENCY_ACTION_REBOOT_IMMEDIATE] = "reboot-immediate",
[EMERGENCY_ACTION_POWEROFF] = "poweroff",
[EMERGENCY_ACTION_POWEROFF_FORCE] = "poweroff-force",
[EMERGENCY_ACTION_POWEROFF_IMMEDIATE] = "poweroff-immediate"
};
DEFINE_STRING_TABLE_LOOKUP(emergency_action, EmergencyAction);
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