src/login/logind-action.c

	logind-action.c revision 0b452006de98294d1690f045f6ea2f7f6630ec3b
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
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"
6482f6269c87d2249e52e889a63adbdd50f2d691Ronny Chevalier#include "formats-util.h"
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering#include "process-util.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        };
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering        InhibitWhat inhibit_operation;
af9792ac7f39354f80e9006c42c2400c5e41c447Lennart Poettering        Inhibitor *offending = NULL;
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering        bool supported;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart 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        }
2d62c530d2b4c2730abff715b7342f1402114513Lennart Poettering
f9cd6be10ece07e10488c05e270a0b5860779864Lennart Poettering        if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) {
f9cd6be10ece07e10488c05e270a0b5860779864Lennart Poettering                /* If the last system suspend or startup is too close,
f9cd6be10ece07e10488c05e270a0b5860779864Lennart Poettering                 * let's not suspend for now, to give USB docking
f9cd6be10ece07e10488c05e270a0b5860779864Lennart Poettering                 * stations some time to settle so that we can
f9cd6be10ece07e10488c05e270a0b5860779864Lennart Poettering                 * properly watch its displays. */
f9cd6be10ece07e10488c05e270a0b5860779864Lennart Poettering                if (m->lid_switch_ignore_event_source) {
f9cd6be10ece07e10488c05e270a0b5860779864Lennart Poettering                        log_debug("Ignoring lid switch request, system startup or resume too close.");
f9cd6be10ece07e10488c05e270a0b5860779864Lennart Poettering                        return 0;
2d62c530d2b4c2730abff715b7342f1402114513Lennart Poettering                }
2d62c530d2b4c2730abff715b7342f1402114513Lennart Poettering        }
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering        /* If the key handling is inhibited, don't do anything */
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering        if (inhibit_key > 0) {
cc3773810855956bad92337cee8fa193584ab62eLennart 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. */
ed4ba7e4f652150310d062ffbdfefb4521ce1054Lennart Poettering        if (handle == HANDLE_LOCK) {
ed4ba7e4f652150310d062ffbdfefb4521ce1054Lennart Poettering
ed4ba7e4f652150310d062ffbdfefb4521ce1054Lennart Poettering                if (!is_edge)
ed4ba7e4f652150310d062ffbdfefb4521ce1054Lennart Poettering                        return 0;
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering                log_info("Locking sessions...");
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering                session_send_lock_all(m, true);
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering                return 1;
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering        }
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering
19adb8a3204fefd91411b5f0f350c8bc6bcf75feZbigniew Jędrzejewski-Szmek        if (handle == HANDLE_SUSPEND)
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering                supported = can_sleep("suspend") > 0;
19adb8a3204fefd91411b5f0f350c8bc6bcf75feZbigniew Jędrzejewski-Szmek        else if (handle == HANDLE_HIBERNATE)
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering                supported = can_sleep("hibernate") > 0;
19adb8a3204fefd91411b5f0f350c8bc6bcf75feZbigniew Jędrzejewski-Szmek        else if (handle == HANDLE_HYBRID_SLEEP)
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering                supported = can_sleep("hybrid-sleep") > 0;
7801356442578ff6e1c65844eb9e65c819af4660Zbigniew Jędrzejewski-Szmek        else if (handle == HANDLE_KEXEC)
af9792ac7f39354f80e9006c42c2400c5e41c447Lennart Poettering                supported = access(KEXEC, X_OK) >= 0;
af9792ac7f39354f80e9006c42c2400c5e41c447Lennart Poettering        else
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering                supported = true;
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering        if (!supported) {
15411c0cb1192799b37ec8f25d6f30e8d7292fc6David Herrmann                log_warning("Requested operation not supported, ignoring.");
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering                return -EOPNOTSUPP;
dc3a1b76a6a6f9dfe9b451f534587251b50a0685Lennart Poettering        }
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering        if (m->action_what) {
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering                log_debug("Action already in progress, ignoring.");
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart 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 */
85a428c69465b047731b6abb5005f01824f1444eLennart 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);
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart 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 */
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek                if (!is_edge) {
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering                        log_debug("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek                                  inhibit_what_to_string(inhibit_operation),
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek                                  offending->uid, strna(u),
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering                                  offending->pid, strna(comm));
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering                        return 0;
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart Poettering                }
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering                log_error("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek                          inhibit_what_to_string(inhibit_operation),
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek                          offending->uid, strna(u),
85a428c69465b047731b6abb5005f01824f1444eLennart Poettering                          offending->pid, strna(comm));
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart 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);
cc3773810855956bad92337cee8fa193584ab62eLennart Poettering        if (r < 0) {
23406ce58aa7142e8df3c5c9e5ac34a01e90e3e0Lennart 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);
DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting");