src/core/failure-action.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2014 Lennart Poettering
   7   Copyright 2012 Michael Olbrich
   8
   9   systemd is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as published by
  11   the Free Software Foundation; either version 2.1 of the License, or
  12   (at your option) any later version.
  13
  14   systemd is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   Lesser General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include <sys/reboot.h>
  24 #include <linux/reboot.h>
  25
  26 #include "bus-error.h"
  27 #include "bus-util.h"
  28 #include "failure-action.h"
  29 #include "special.h"
  30 #include "string-table.h"
  31 #include "terminal-util.h"
  32
  33 static void log_and_status(Manager *m, const char *message) {
  34         log_warning("%s", message);
  35         manager_status_printf(m, STATUS_TYPE_EMERGENCY,
  36                               ANSI_HIGHLIGHT_RED " !!  " ANSI_NORMAL,
  37                               "%s", message);
  38 }
  39
  40 int failure_action(
  41                 Manager *m,
  42                 FailureAction action,
  43                 const char *reboot_arg) {
  44
  45         assert(m);
  46         assert(action >= 0);
  47         assert(action < _FAILURE_ACTION_MAX);
  48
  49         if (action == FAILURE_ACTION_NONE)
  50                 return -ECANCELED;
  51
  52         if (m->running_as == MANAGER_USER) {
  53                 /* Downgrade all options to simply exiting if we run
  54                  * in user mode */
  55
  56                 log_warning("Exiting as result of failure.");
  57                 m->exit_code = MANAGER_EXIT;
  58                 return -ECANCELED;
  59         }
  60
  61         switch (action) {
  62
  63         case FAILURE_ACTION_REBOOT:
  64                 log_and_status(m, "Rebooting as result of failure.");
  65
  66                 update_reboot_param_file(reboot_arg);
  67                 (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE, NULL);
  68
  69                 break;
  70
  71         case FAILURE_ACTION_REBOOT_FORCE:
  72                 log_and_status(m, "Forcibly rebooting as result of failure.");
  73
  74                 update_reboot_param_file(reboot_arg);
  75                 m->exit_code = MANAGER_REBOOT;
  76                 break;
  77
  78         case FAILURE_ACTION_REBOOT_IMMEDIATE:
  79                 log_and_status(m, "Rebooting immediately as result of failure.");
  80
  81                 sync();
  82
  83                 if (reboot_arg) {
  84                         log_info("Rebooting with argument '%s'.", reboot_arg);
  85                         syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, reboot_arg);
  86                 }
  87
  88                 log_info("Rebooting.");
  89                 reboot(RB_AUTOBOOT);
  90                 break;
  91
  92         case FAILURE_ACTION_POWEROFF:
  93                 log_and_status(m, "Powering off as result of failure.");
  94                 (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_POWEROFF_TARGET, JOB_REPLACE, NULL);
  95                 break;
  96
  97         case FAILURE_ACTION_POWEROFF_FORCE:
  98                 log_and_status(m, "Forcibly powering off as result of failure.");
  99                 m->exit_code = MANAGER_POWEROFF;
 100                 break;
 101
 102         case FAILURE_ACTION_POWEROFF_IMMEDIATE:
 103                 log_and_status(m, "Powering off immediately as result of failure.");
 104
 105                 sync();
 106
 107                 log_info("Powering off.");
 108                 reboot(RB_POWER_OFF);
 109                 break;
 110
 111         default:
 112                 assert_not_reached("Unknown failure action");
 113         }
 114
 115         return -ECANCELED;
 116 }
 117
 118 static const char* const failure_action_table[_FAILURE_ACTION_MAX] = {
 119         [FAILURE_ACTION_NONE] = "none",
 120         [FAILURE_ACTION_REBOOT] = "reboot",
 121         [FAILURE_ACTION_REBOOT_FORCE] = "reboot-force",
 122         [FAILURE_ACTION_REBOOT_IMMEDIATE] = "reboot-immediate",
 123         [FAILURE_ACTION_POWEROFF] = "poweroff",
 124         [FAILURE_ACTION_POWEROFF_FORCE] = "poweroff-force",
 125         [FAILURE_ACTION_POWEROFF_IMMEDIATE] = "poweroff-immediate"
 126 };
 127 DEFINE_STRING_TABLE_LOOKUP(failure_action, FailureAction);