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 #if 0 /// elogind does this itself. No target table required
62 static const char * const target_table[_HANDLE_ACTION_MAX] = {
63 [HANDLE_POWEROFF] = SPECIAL_POWEROFF_TARGET,
64 [HANDLE_REBOOT] = SPECIAL_REBOOT_TARGET,
65 [HANDLE_HALT] = SPECIAL_HALT_TARGET,
66 [HANDLE_KEXEC] = SPECIAL_KEXEC_TARGET,
67 [HANDLE_SUSPEND] = SPECIAL_SUSPEND_TARGET,
68 [HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
69 [HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET
73 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
74 InhibitWhat inhibit_operation;
75 Inhibitor *offending = NULL;
81 /* If the key handling is turned off, don't do anything */
82 if (handle == HANDLE_IGNORE) {
83 log_debug("Refusing operation, as it is turned off.");
87 if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) {
88 /* If the last system suspend or startup is too close,
89 * let's not suspend for now, to give USB docking
90 * stations some time to settle so that we can
91 * properly watch its displays. */
92 if (m->lid_switch_ignore_event_source) {
93 log_debug("Ignoring lid switch request, system startup or resume too close.");
98 /* If the key handling is inhibited, don't do anything */
99 if (inhibit_key > 0) {
100 if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0, NULL)) {
101 log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_key));
106 /* Locking is handled differently from the rest. */
107 if (handle == HANDLE_LOCK) {
112 log_info("Locking sessions...");
113 session_send_lock_all(m, true);
117 if (handle == HANDLE_SUSPEND)
118 supported = can_sleep("suspend") > 0;
119 else if (handle == HANDLE_HIBERNATE)
120 supported = can_sleep("hibernate") > 0;
121 else if (handle == HANDLE_HYBRID_SLEEP)
122 supported = can_sleep("hybrid-sleep") > 0;
123 else if (handle == HANDLE_KEXEC)
124 supported = access(KEXEC, X_OK) >= 0;
129 log_warning("Requested operation not supported, ignoring.");
133 if (m->action_what) {
134 log_debug("Action already in progress, ignoring.");
138 inhibit_operation = handle == HANDLE_SUSPEND || handle == HANDLE_HIBERNATE || handle == HANDLE_HYBRID_SLEEP ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN;
140 /* If the actual operation is inhibited, warn and fail */
141 if (!ignore_inhibited &&
142 manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0, &offending)) {
143 _cleanup_free_ char *comm = NULL, *u = NULL;
145 get_process_comm(offending->pid, &comm);
146 u = uid_to_name(offending->uid);
148 /* If this is just a recheck of the lid switch then don't warn about anything */
150 log_debug("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
151 inhibit_what_to_string(inhibit_operation),
152 offending->uid, strna(u),
153 offending->pid, strna(comm));
157 log_error("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
158 inhibit_what_to_string(inhibit_operation),
159 offending->uid, strna(u),
160 offending->pid, strna(comm));
165 log_info("%s", message_table[handle]);
167 #if 0 /// elogind uses its own variant, which can use the handle directly.
168 r = bus_manager_shutdown_or_sleep_now_or_later(m, target_table[handle], inhibit_operation, &error);
170 r = bus_manager_shutdown_or_sleep_now_or_later(m, handle, inhibit_operation, &error);
173 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
180 static int run_helper(const char *helper) {
183 return log_error_errno(errno, "Failed to fork: %m");
189 close_all_fds(NULL, 0);
191 execlp(helper, helper, NULL);
192 log_error_errno(errno, "Failed to execute %s: %m", helper);
196 return wait_for_terminate_and_warn(helper, pid, true);
199 static int write_mode(char **modes) {
203 STRV_FOREACH(mode, modes) {
206 k = write_string_file("/sys/power/disk", *mode, 0);
210 log_debug_errno(k, "Failed to write '%s' to /sys/power/disk: %m",
217 log_error_errno(r, "Failed to write mode to /sys/power/disk: %m");
222 static int write_state(FILE **f, char **states) {
226 STRV_FOREACH(state, states) {
229 k = write_string_stream(*f, *state, true);
232 log_debug_errno(k, "Failed to write '%s' to /sys/power/state: %m",
238 *f = fopen("/sys/power/state", "we");
240 return log_error_errno(errno, "Failed to open /sys/power/state: %m");
246 static int do_sleep(const char *arg_verb, char **modes, char **states) {
247 char *arguments[] = {
253 static const char* const dirs[] = {SYSTEM_SLEEP_PATH, NULL};
256 _cleanup_fclose_ FILE *f = NULL;
258 /* This file is opened first, so that if we hit an error,
259 * we can abort before modifying any state. */
260 f = fopen("/sys/power/state", "we");
262 return log_error_errno(errno, "Failed to open /sys/power/state: %m");
264 /* Configure the hibernation mode */
265 r = write_mode(modes);
269 execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
272 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_START),
273 LOG_MESSAGE("Suspending system..."),
274 "SLEEP=%s", arg_verb,
277 r = write_state(&f, states);
282 LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
283 LOG_MESSAGE("System resumed."),
284 "SLEEP=%s", arg_verb,
287 arguments[1] = (char*) "post";
288 execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
293 int shutdown_or_sleep(Manager *m, HandleAction action) {
298 case HANDLE_POWEROFF:
299 return run_helper(HALT);
301 return run_helper(REBOOT);
303 return run_helper(HALT);
305 return run_helper(KEXEC);
307 return do_sleep("suspend", m->suspend_mode, m->suspend_state);
308 case HANDLE_HIBERNATE:
309 return do_sleep("hibernate", m->hibernate_mode, m->hibernate_state);
310 case HANDLE_HYBRID_SLEEP:
311 return do_sleep("hybrid-sleep", m->hybrid_sleep_mode, m->hybrid_sleep_state);
317 static const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
318 [HANDLE_IGNORE] = "ignore",
319 [HANDLE_POWEROFF] = "poweroff",
320 [HANDLE_REBOOT] = "reboot",
321 [HANDLE_HALT] = "halt",
322 [HANDLE_KEXEC] = "kexec",
323 [HANDLE_SUSPEND] = "suspend",
324 [HANDLE_HIBERNATE] = "hibernate",
325 [HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
326 [HANDLE_LOCK] = "lock"
329 DEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction);
330 DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting");