src/login/logind-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 2012 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include "conf-parser.h"
  23 #include "special.h"
  24 #include "dbus-common.h"
  25 #include "logind-action.h"
  26
  27 int manager_handle_action(
  28                 Manager *m,
  29                 InhibitWhat inhibit_key,
  30                 HandleAction handle,
  31                 bool ignore_inhibited,
  32                 bool is_edge) {
  33
  34         static const char * const message_table[_HANDLE_ACTION_MAX] = {
  35                 [HANDLE_POWEROFF] = "Powering Off...",
  36                 [HANDLE_REBOOT] = "Rebooting...",
  37                 [HANDLE_HALT] = "Halting...",
  38                 [HANDLE_KEXEC] = "Rebooting via kexec...",
  39                 [HANDLE_SUSPEND] = "Suspending...",
  40                 [HANDLE_HIBERNATE] = "Hibernating...",
  41                 [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending..."
  42         };
  43
  44         static const char * const target_table[_HANDLE_ACTION_MAX] = {
  45                 [HANDLE_POWEROFF] = SPECIAL_POWEROFF_TARGET,
  46                 [HANDLE_REBOOT] = SPECIAL_REBOOT_TARGET,
  47                 [HANDLE_HALT] = SPECIAL_HALT_TARGET,
  48                 [HANDLE_KEXEC] = SPECIAL_KEXEC_TARGET,
  49                 [HANDLE_SUSPEND] = SPECIAL_SUSPEND_TARGET,
  50                 [HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
  51                 [HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET
  52         };
  53
  54         DBusError error;
  55         int r;
  56         InhibitWhat inhibit_operation;
  57
  58         assert(m);
  59
  60         /* If the key handling is turned off, don't do anything */
  61         if (handle == HANDLE_IGNORE) {
  62                 log_debug("Refusing operation, as it is turned off.");
  63                 return 0;
  64         }
  65
  66         /* If the key handling is inhibited, don't do anything */
  67         if (inhibit_key > 0) {
  68                 if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0)) {
  69                         log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_key));
  70                         return 0;
  71                 }
  72         }
  73
  74         /* Locking is handled differently from the rest. */
  75         if (handle == HANDLE_LOCK) {
  76                 log_info("Locking sessions...");
  77                 session_send_lock_all(m, true);
  78                 return 1;
  79         }
  80
  81         inhibit_operation = handle == HANDLE_SUSPEND || handle == HANDLE_HIBERNATE || handle == HANDLE_HYBRID_SLEEP ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN;
  82
  83         /* If the actual operation is inhibited, warn and fail */
  84         if (!ignore_inhibited &&
  85             manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0)) {
  86
  87                 /* If this is just a recheck of the lid switch then don't warn about anything */
  88                 if (!is_edge) {
  89                         log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_operation));
  90                         return 0;
  91                 }
  92
  93                 log_error("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_operation));
  94                 warn_melody();
  95                 return -EPERM;
  96         }
  97
  98         log_info("%s", message_table[handle]);
  99
 100         dbus_error_init(&error);
 101         r = bus_manager_shutdown_or_sleep_now_or_later(m, target_table[handle], inhibit_operation, &error);
 102         if (r < 0) {
 103                 log_error("Failed to execute operation: %s", bus_error_message(&error));
 104                 dbus_error_free(&error);
 105                 return r;
 106         }
 107
 108         return 1;
 109 }
 110
 111 static const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
 112         [HANDLE_IGNORE] = "ignore",
 113         [HANDLE_POWEROFF] = "poweroff",
 114         [HANDLE_REBOOT] = "reboot",
 115         [HANDLE_HALT] = "halt",
 116         [HANDLE_KEXEC] = "kexec",
 117         [HANDLE_SUSPEND] = "suspend",
 118         [HANDLE_HIBERNATE] = "hibernate",
 119         [HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
 120         [HANDLE_LOCK] = "lock"
 121 };
 122
 123 DEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction);
 124 DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting");