1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2012 Lennart Poettering
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.
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.
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/>.
26 #include "sd-messages.h"
33 #include "conf-parser.h"
34 #include "sleep-config.h"
35 #include "bus-error.h"
37 #include "logind-action.h"
39 int manager_handle_action(
41 InhibitWhat inhibit_key,
43 bool ignore_inhibited,
46 static const char * const message_table[_HANDLE_ACTION_MAX] = {
47 [HANDLE_POWEROFF] = "Powering Off...",
48 [HANDLE_REBOOT] = "Rebooting...",
49 [HANDLE_HALT] = "Halting...",
50 [HANDLE_KEXEC] = "Rebooting via kexec...",
51 [HANDLE_SUSPEND] = "Suspending...",
52 [HANDLE_HIBERNATE] = "Hibernating...",
53 [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending..."
56 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
57 InhibitWhat inhibit_operation;
58 Inhibitor *offending = NULL;
64 /* If the key handling is turned off, don't do anything */
65 if (handle == HANDLE_IGNORE) {
66 log_debug("Refusing operation, as it is turned off.");
70 if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) {
71 /* If the last system suspend or startup is too close,
72 * let's not suspend for now, to give USB docking
73 * stations some time to settle so that we can
74 * properly watch its displays. */
75 if (m->lid_switch_ignore_event_source) {
76 log_debug("Ignoring lid switch request, system startup or resume too close.");
81 /* If the key handling is inhibited, don't do anything */
82 if (inhibit_key > 0) {
83 if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0, NULL)) {
84 log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_key));
89 /* Locking is handled differently from the rest. */
90 if (handle == HANDLE_LOCK) {
95 log_info("Locking sessions...");
96 session_send_lock_all(m, true);
100 if (handle == HANDLE_SUSPEND)
101 supported = can_sleep("suspend") > 0;
102 else if (handle == HANDLE_HIBERNATE)
103 supported = can_sleep("hibernate") > 0;
104 else if (handle == HANDLE_HYBRID_SLEEP)
105 supported = can_sleep("hybrid-sleep") > 0;
106 else if (handle == HANDLE_KEXEC)
107 supported = access(KEXEC, X_OK) >= 0;
112 log_warning("Requested operation not supported, ignoring.");
116 if (m->action_what) {
117 log_debug("Action already in progress, ignoring.");
121 inhibit_operation = handle == HANDLE_SUSPEND || handle == HANDLE_HIBERNATE || handle == HANDLE_HYBRID_SLEEP ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN;
123 /* If the actual operation is inhibited, warn and fail */
124 if (!ignore_inhibited &&
125 manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0, &offending)) {
126 _cleanup_free_ char *comm = NULL, *u = NULL;
128 get_process_comm(offending->pid, &comm);
129 u = uid_to_name(offending->uid);
131 /* If this is just a recheck of the lid switch then don't warn about anything */
133 log_debug("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
134 inhibit_what_to_string(inhibit_operation),
135 offending->uid, strna(u),
136 offending->pid, strna(comm));
140 log_error("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
141 inhibit_what_to_string(inhibit_operation),
142 offending->uid, strna(u),
143 offending->pid, strna(comm));
149 log_info("%s", message_table[handle]);
151 r = bus_manager_shutdown_or_sleep_now_or_later(m, handle, inhibit_operation, &error);
153 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
160 static int run_helper(const char *helper) {
163 return log_error_errno(errno, "Failed to fork: %m");
169 close_all_fds(NULL, 0);
171 execlp(helper, helper, NULL);
172 log_error_errno(errno, "Failed to execute %s: %m", helper);
176 return wait_for_terminate_and_warn(helper, pid, true);
179 static int write_mode(char **modes) {
183 STRV_FOREACH(mode, modes) {
186 k = write_string_file("/sys/power/disk", *mode);
190 log_debug_errno(k, "Failed to write '%s' to /sys/power/disk: %m",
197 log_error_errno(r, "Failed to write mode to /sys/power/disk: %m");
202 static int write_state(FILE **f, char **states) {
206 STRV_FOREACH(state, states) {
209 k = write_string_stream(*f, *state);
212 log_debug_errno(k, "Failed to write '%s' to /sys/power/state: %m",
218 *f = fopen("/sys/power/state", "we");
220 return log_error_errno(errno, "Failed to open /sys/power/state: %m");
226 static int do_sleep(const char *arg_verb, const char **modes, const char **states) {
227 char *arguments[] = {
233 static const char* const dirs[] = { SYSTEM_SLEEP_PATH, NULL};
235 _cleanup_fclose_ FILE *f = NULL;
237 /* This file is opened first, so that if we hit an error,
238 * we can abort before modifying any state. */
239 f = fopen("/sys/power/state", "we");
241 return log_error_errno(errno, "Failed to open /sys/power/state: %m");
243 /* Configure the hibernation mode */
244 r = write_mode(modes);
248 execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
251 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_START),
252 LOG_MESSAGE("Suspending system..."),
253 "SLEEP=%s", arg_verb,
256 r = write_state(&f, states);
261 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
262 LOG_MESSAGE("System resumed."),
263 "SLEEP=%s", arg_verb,
266 arguments[1] = (char*) "post";
267 execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
272 int shutdown_or_sleep(Manager *m, HandleAction action) {
274 case HANDLE_POWEROFF:
275 return run_helper(HALT);
277 return run_helper(REBOOT);
279 return run_helper(HALT);
281 return run_helper(KEXEC);
283 return do_sleep("suspend", m->suspend_mode, m->suspend_state);
284 case HANDLE_HIBERNATE:
285 return do_sleep("hibernate", m->hibernate_mode, m->hibernate_state);
286 case HANDLE_HYBRID_SLEEP:
287 return do_sleep("hybrid-sleep", m->hybrid_sleep_mode, m->hybrid_sleep_state);
293 static const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
294 [HANDLE_IGNORE] = "ignore",
295 [HANDLE_POWEROFF] = "poweroff",
296 [HANDLE_REBOOT] = "reboot",
297 [HANDLE_HALT] = "halt",
298 [HANDLE_KEXEC] = "kexec",
299 [HANDLE_SUSPEND] = "suspend",
300 [HANDLE_HIBERNATE] = "hibernate",
301 [HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
302 [HANDLE_LOCK] = "lock"
305 DEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction);
306 DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting");