logind-action.c revision 85a428c69465b047731b6abb5005f01824f1444e
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering/***
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering This file is part of systemd.
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering Copyright 2012 Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering systemd is free software; you can redistribute it and/or modify it
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering under the terms of the GNU Lesser General Public License as published by
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering the Free Software Foundation; either version 2.1 of the License, or
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering (at your option) any later version.
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering systemd is distributed in the hope that it will be useful, but
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering WITHOUT ANY WARRANTY; without even the implied warranty of
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering Lesser General Public License for more details.
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering You should have received a copy of the GNU Lesser General Public License
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering along with systemd; If not, see <http://www.gnu.org/licenses/>.
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering***/
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering#include <unistd.h>
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering#include "sd-messages.h"
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering#include "conf-parser.h"
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering#include "special.h"
19adb8a3204fefd91411b5f0f350c8bc6bcf75feZbigniew Jędrzejewski-Szmek#include "sleep-config.h"
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering#include "bus-util.h"
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering#include "bus-error.h"
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering#include "logind-action.h"
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poetteringint manager_handle_action(
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering Manager *m,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering InhibitWhat inhibit_key,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering HandleAction handle,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering bool ignore_inhibited,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering bool is_edge) {
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering static const char * const message_table[_HANDLE_ACTION_MAX] = {
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_POWEROFF] = "Powering Off...",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_REBOOT] = "Rebooting...",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_HALT] = "Halting...",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_KEXEC] = "Rebooting via kexec...",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_SUSPEND] = "Suspending...",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_HIBERNATE] = "Hibernating...",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending..."
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering };
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering static const char * const target_table[_HANDLE_ACTION_MAX] = {
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_POWEROFF] = SPECIAL_POWEROFF_TARGET,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_REBOOT] = SPECIAL_REBOOT_TARGET,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_HALT] = SPECIAL_HALT_TARGET,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_KEXEC] = SPECIAL_KEXEC_TARGET,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_SUSPEND] = SPECIAL_SUSPEND_TARGET,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering };
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering InhibitWhat inhibit_operation;
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering Inhibitor *offending = NULL;
af9792ac7f39354f80e9006c42c2400c5e41c447Lennart Poettering bool supported;
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering int r;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering assert(m);
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering /* If the key handling is turned off, don't do anything */
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering if (handle == HANDLE_IGNORE) {
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering log_debug("Refusing operation, as it is turned off.");
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering return 0;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering }
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering /* If the key handling is inhibited, don't do anything */
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering if (inhibit_key > 0) {
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0, NULL)) {
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_key));
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering return 0;
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering }
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering }
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering /* Locking is handled differently from the rest. */
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering if (handle == HANDLE_LOCK) {
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering log_info("Locking sessions...");
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering session_send_lock_all(m, true);
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering return 1;
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering }
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering if (handle == HANDLE_SUSPEND)
19adb8a3204fefd91411b5f0f350c8bc6bcf75feZbigniew Jędrzejewski-Szmek supported = can_sleep("suspend") > 0;
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering else if (handle == HANDLE_HIBERNATE)
19adb8a3204fefd91411b5f0f350c8bc6bcf75feZbigniew Jędrzejewski-Szmek supported = can_sleep("hibernate") > 0;
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering else if (handle == HANDLE_HYBRID_SLEEP)
19adb8a3204fefd91411b5f0f350c8bc6bcf75feZbigniew Jędrzejewski-Szmek supported = can_sleep("hybrid-sleep") > 0;
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering else if (handle == HANDLE_KEXEC)
7801356442578ff6e1c65844eb9e65c819af4660Zbigniew Jędrzejewski-Szmek supported = access(KEXEC, X_OK) >= 0;
af9792ac7f39354f80e9006c42c2400c5e41c447Lennart Poettering else
af9792ac7f39354f80e9006c42c2400c5e41c447Lennart Poettering supported = true;
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering if (!supported) {
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering log_warning("Requested operation not supported, ignoring.");
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering return -ENOTSUP;
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering }
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering if (m->action_what) {
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering log_debug("Action already in progress, ignoring.");
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering return -EALREADY;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering }
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering inhibit_operation = handle == HANDLE_SUSPEND || handle == HANDLE_HIBERNATE || handle == HANDLE_HYBRID_SLEEP ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering /* If the actual operation is inhibited, warn and fail */
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering if (!ignore_inhibited &&
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0, &offending)) {
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering _cleanup_free_ char *comm = NULL, *u = NULL;
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering get_process_comm(offending->pid, &comm);
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering u = uid_to_name(offending->uid);
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering /* If this is just a recheck of the lid switch then don't warn about anything */
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering if (!is_edge) {
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering log_debug("Refusing operation, %s is inhibited by UID %lu/%s, PID %lu/%s.",
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering inhibit_what_to_string(inhibit_operation),
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering (unsigned long) offending->uid, strna(u),
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering (unsigned long) offending->pid, strna(comm));
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering return 0;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering }
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering log_error("Refusing operation, %s is inhibited by UID %lu/%s, PID %lu/%s.",
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering inhibit_what_to_string(inhibit_operation),
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering (unsigned long) offending->uid, strna(u),
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering (unsigned long) offending->pid, strna(comm));
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering warn_melody();
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering return -EPERM;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering }
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering log_info("%s", message_table[handle]);
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering r = bus_manager_shutdown_or_sleep_now_or_later(m, target_table[handle], inhibit_operation, &error);
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering if (r < 0) {
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering log_error("Failed to execute operation: %s", bus_error_message(&error, r));
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering return r;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering }
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering return 1;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering}
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poetteringstatic const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_IGNORE] = "ignore",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_POWEROFF] = "poweroff",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_REBOOT] = "reboot",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_HALT] = "halt",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_KEXEC] = "kexec",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_SUSPEND] = "suspend",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_HIBERNATE] = "hibernate",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering [HANDLE_LOCK] = "lock"
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering};
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart PoetteringDEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction);
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart PoetteringDEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting");