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/>.
24 #include "alloc-util.h"
25 #include "bus-error.h"
27 #include "conf-parser.h"
28 #include "formats-util.h"
29 #include "logind-action.h"
30 #include "process-util.h"
31 #include "sleep-config.h"
32 //#include "special.h"
33 #include "string-table.h"
34 #include "terminal-util.h"
35 #include "user-util.h"
37 // Additional includes needed by elogind
40 #include "sd-messages.h"
44 int manager_handle_action(
46 InhibitWhat inhibit_key,
48 bool ignore_inhibited,
51 static const char * const message_table[_HANDLE_ACTION_MAX] = {
52 [HANDLE_POWEROFF] = "Powering Off...",
53 [HANDLE_REBOOT] = "Rebooting...",
54 [HANDLE_HALT] = "Halting...",
55 [HANDLE_KEXEC] = "Rebooting via kexec...",
56 [HANDLE_SUSPEND] = "Suspending...",
57 [HANDLE_HIBERNATE] = "Hibernating...",
58 [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending..."
61 /// elogind does this itself. No target table required
63 static const char * const target_table[_HANDLE_ACTION_MAX] = {
64 [HANDLE_POWEROFF] = SPECIAL_POWEROFF_TARGET,
65 [HANDLE_REBOOT] = SPECIAL_REBOOT_TARGET,
66 [HANDLE_HALT] = SPECIAL_HALT_TARGET,
67 [HANDLE_KEXEC] = SPECIAL_KEXEC_TARGET,
68 [HANDLE_SUSPEND] = SPECIAL_SUSPEND_TARGET,
69 [HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
70 [HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET
74 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
75 InhibitWhat inhibit_operation;
76 Inhibitor *offending = NULL;
82 /* If the key handling is turned off, don't do anything */
83 if (handle == HANDLE_IGNORE) {
84 log_debug("Refusing operation, as it is turned off.");
88 if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) {
89 /* If the last system suspend or startup is too close,
90 * let's not suspend for now, to give USB docking
91 * stations some time to settle so that we can
92 * properly watch its displays. */
93 if (m->lid_switch_ignore_event_source) {
94 log_debug("Ignoring lid switch request, system startup or resume too close.");
99 /* If the key handling is inhibited, don't do anything */
100 if (inhibit_key > 0) {
101 if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0, NULL)) {
102 log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_key));
107 /* Locking is handled differently from the rest. */
108 if (handle == HANDLE_LOCK) {
113 log_info("Locking sessions...");
114 session_send_lock_all(m, true);
118 if (handle == HANDLE_SUSPEND)
119 supported = can_sleep("suspend") > 0;
120 else if (handle == HANDLE_HIBERNATE)
121 supported = can_sleep("hibernate") > 0;
122 else if (handle == HANDLE_HYBRID_SLEEP)
123 supported = can_sleep("hybrid-sleep") > 0;
124 else if (handle == HANDLE_KEXEC)
125 supported = access(KEXEC, X_OK) >= 0;
130 log_warning("Requested operation not supported, ignoring.");
134 if (m->action_what) {
135 log_debug("Action already in progress, ignoring.");
139 inhibit_operation = handle == HANDLE_SUSPEND || handle == HANDLE_HIBERNATE || handle == HANDLE_HYBRID_SLEEP ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN;
141 /* If the actual operation is inhibited, warn and fail */
142 if (!ignore_inhibited &&
143 manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0, &offending)) {
144 _cleanup_free_ char *comm = NULL, *u = NULL;
146 get_process_comm(offending->pid, &comm);
147 u = uid_to_name(offending->uid);
149 /* If this is just a recheck of the lid switch then don't warn about anything */
151 log_debug("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
152 inhibit_what_to_string(inhibit_operation),
153 offending->uid, strna(u),
154 offending->pid, strna(comm));
158 log_error("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
159 inhibit_what_to_string(inhibit_operation),
160 offending->uid, strna(u),
161 offending->pid, strna(comm));
166 log_info("%s", message_table[handle]);
168 /// elogind uses its own variant, which can use the handle directly.
170 r = bus_manager_shutdown_or_sleep_now_or_later(m, target_table[handle], inhibit_operation, &error);
172 r = bus_manager_shutdown_or_sleep_now_or_later(m, handle, inhibit_operation, &error);
175 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
182 static int run_helper(const char *helper) {
185 return log_error_errno(errno, "Failed to fork: %m");
191 close_all_fds(NULL, 0);
193 execlp(helper, helper, NULL);
194 log_error_errno(errno, "Failed to execute %s: %m", helper);
198 return wait_for_terminate_and_warn(helper, pid, true);
201 static int write_mode(char **modes) {
205 STRV_FOREACH(mode, modes) {
208 k = write_string_file("/sys/power/disk", *mode, 0);
212 log_debug_errno(k, "Failed to write '%s' to /sys/power/disk: %m",
219 log_error_errno(r, "Failed to write mode to /sys/power/disk: %m");
224 static int write_state(FILE **f, char **states) {
228 STRV_FOREACH(state, states) {
231 k = write_string_stream(*f, *state, true);
234 log_debug_errno(k, "Failed to write '%s' to /sys/power/state: %m",
240 *f = fopen("/sys/power/state", "we");
242 return log_error_errno(errno, "Failed to open /sys/power/state: %m");
248 static int do_sleep(const char *arg_verb, char **modes, char **states) {
249 char *arguments[] = {
255 static const char* const dirs[] = {SYSTEM_SLEEP_PATH, NULL};
258 _cleanup_fclose_ FILE *f = NULL;
260 /* This file is opened first, so that if we hit an error,
261 * we can abort before modifying any state. */
262 f = fopen("/sys/power/state", "we");
264 return log_error_errno(errno, "Failed to open /sys/power/state: %m");
266 /* Configure the hibernation mode */
267 r = write_mode(modes);
271 execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
274 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_START),
275 LOG_MESSAGE("Suspending system..."),
276 "SLEEP=%s", arg_verb,
279 r = write_state(&f, states);
284 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
285 LOG_MESSAGE("System resumed."),
286 "SLEEP=%s", arg_verb,
289 arguments[1] = (char*) "post";
290 execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
295 int shutdown_or_sleep(Manager *m, HandleAction action) {
300 case HANDLE_POWEROFF:
301 return run_helper(HALT);
303 return run_helper(REBOOT);
305 return run_helper(HALT);
307 return run_helper(KEXEC);
309 return do_sleep("suspend", m->suspend_mode, m->suspend_state);
310 case HANDLE_HIBERNATE:
311 return do_sleep("hibernate", m->hibernate_mode, m->hibernate_state);
312 case HANDLE_HYBRID_SLEEP:
313 return do_sleep("hybrid-sleep", m->hybrid_sleep_mode, m->hybrid_sleep_state);
319 static const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
320 [HANDLE_IGNORE] = "ignore",
321 [HANDLE_POWEROFF] = "poweroff",
322 [HANDLE_REBOOT] = "reboot",
323 [HANDLE_HALT] = "halt",
324 [HANDLE_KEXEC] = "kexec",
325 [HANDLE_SUSPEND] = "suspend",
326 [HANDLE_HIBERNATE] = "hibernate",
327 [HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
328 [HANDLE_LOCK] = "lock"
331 DEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction);
332 DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting");