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"
38 #include "formats-util.h"
39 #include "process-util.h"
40 #include "terminal-util.h"
42 int manager_handle_action(
44 InhibitWhat inhibit_key,
46 bool ignore_inhibited,
49 static const char * const message_table[_HANDLE_ACTION_MAX] = {
50 [HANDLE_POWEROFF] = "Powering Off...",
51 [HANDLE_REBOOT] = "Rebooting...",
52 [HANDLE_HALT] = "Halting...",
53 [HANDLE_KEXEC] = "Rebooting via kexec...",
54 [HANDLE_SUSPEND] = "Suspending...",
55 [HANDLE_HIBERNATE] = "Hibernating...",
56 [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending..."
59 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
60 InhibitWhat inhibit_operation;
61 Inhibitor *offending = NULL;
67 /* If the key handling is turned off, don't do anything */
68 if (handle == HANDLE_IGNORE) {
69 log_debug("Refusing operation, as it is turned off.");
73 if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) {
74 /* If the last system suspend or startup is too close,
75 * let's not suspend for now, to give USB docking
76 * stations some time to settle so that we can
77 * properly watch its displays. */
78 if (m->lid_switch_ignore_event_source) {
79 log_debug("Ignoring lid switch request, system startup or resume too close.");
84 /* If the key handling is inhibited, don't do anything */
85 if (inhibit_key > 0) {
86 if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0, NULL)) {
87 log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_key));
92 /* Locking is handled differently from the rest. */
93 if (handle == HANDLE_LOCK) {
98 log_info("Locking sessions...");
99 session_send_lock_all(m, true);
103 if (handle == HANDLE_SUSPEND)
104 supported = can_sleep("suspend") > 0;
105 else if (handle == HANDLE_HIBERNATE)
106 supported = can_sleep("hibernate") > 0;
107 else if (handle == HANDLE_HYBRID_SLEEP)
108 supported = can_sleep("hybrid-sleep") > 0;
109 else if (handle == HANDLE_KEXEC)
110 supported = access(KEXEC, X_OK) >= 0;
115 log_warning("Requested operation not supported, ignoring.");
119 if (m->action_what) {
120 log_debug("Action already in progress, ignoring.");
124 inhibit_operation = handle == HANDLE_SUSPEND || handle == HANDLE_HIBERNATE || handle == HANDLE_HYBRID_SLEEP ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN;
126 /* If the actual operation is inhibited, warn and fail */
127 if (!ignore_inhibited &&
128 manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0, &offending)) {
129 _cleanup_free_ char *comm = NULL, *u = NULL;
131 get_process_comm(offending->pid, &comm);
132 u = uid_to_name(offending->uid);
134 /* If this is just a recheck of the lid switch then don't warn about anything */
136 log_debug("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
137 inhibit_what_to_string(inhibit_operation),
138 offending->uid, strna(u),
139 offending->pid, strna(comm));
143 log_error("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
144 inhibit_what_to_string(inhibit_operation),
145 offending->uid, strna(u),
146 offending->pid, strna(comm));
152 log_info("%s", message_table[handle]);
154 r = bus_manager_shutdown_or_sleep_now_or_later(m, handle, inhibit_operation, &error);
156 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
163 static int run_helper(const char *helper) {
166 return log_error_errno(errno, "Failed to fork: %m");
172 close_all_fds(NULL, 0);
174 execlp(helper, helper, NULL);
175 log_error_errno(errno, "Failed to execute %s: %m", helper);
179 return wait_for_terminate_and_warn(helper, pid, true);
182 static int write_mode(char **modes) {
186 STRV_FOREACH(mode, modes) {
189 k = write_string_file("/sys/power/disk", *mode);
193 log_debug_errno(k, "Failed to write '%s' to /sys/power/disk: %m",
200 log_error_errno(r, "Failed to write mode to /sys/power/disk: %m");
205 static int write_state(FILE **f, char **states) {
209 STRV_FOREACH(state, states) {
212 k = write_string_stream(*f, *state);
215 log_debug_errno(k, "Failed to write '%s' to /sys/power/state: %m",
221 *f = fopen("/sys/power/state", "we");
223 return log_error_errno(errno, "Failed to open /sys/power/state: %m");
229 static int do_sleep(const char *arg_verb, const char **modes, const char **states) {
230 char *arguments[] = {
236 static const char* const dirs[] = { SYSTEM_SLEEP_PATH, NULL};
238 _cleanup_fclose_ FILE *f = NULL;
240 /* This file is opened first, so that if we hit an error,
241 * we can abort before modifying any state. */
242 f = fopen("/sys/power/state", "we");
244 return log_error_errno(errno, "Failed to open /sys/power/state: %m");
246 /* Configure the hibernation mode */
247 r = write_mode(modes);
251 execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
254 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_START),
255 LOG_MESSAGE("Suspending system..."),
256 "SLEEP=%s", arg_verb,
259 r = write_state(&f, states);
264 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
265 LOG_MESSAGE("System resumed."),
266 "SLEEP=%s", arg_verb,
269 arguments[1] = (char*) "post";
270 execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
275 int shutdown_or_sleep(Manager *m, HandleAction action) {
277 case HANDLE_POWEROFF:
278 return run_helper(HALT);
280 return run_helper(REBOOT);
282 return run_helper(HALT);
284 return run_helper(KEXEC);
286 return do_sleep("suspend", m->suspend_mode, m->suspend_state);
287 case HANDLE_HIBERNATE:
288 return do_sleep("hibernate", m->hibernate_mode, m->hibernate_state);
289 case HANDLE_HYBRID_SLEEP:
290 return do_sleep("hybrid-sleep", m->hybrid_sleep_mode, m->hybrid_sleep_state);
296 static const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
297 [HANDLE_IGNORE] = "ignore",
298 [HANDLE_POWEROFF] = "poweroff",
299 [HANDLE_REBOOT] = "reboot",
300 [HANDLE_HALT] = "halt",
301 [HANDLE_KEXEC] = "kexec",
302 [HANDLE_SUSPEND] = "suspend",
303 [HANDLE_HIBERNATE] = "hibernate",
304 [HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
305 [HANDLE_LOCK] = "lock"
308 DEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction);
309 DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting");