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 <sys/ioctl.h>
28 #include <linux/input.h>
29 #include <sys/epoll.h>
31 #include "conf-parser.h"
33 #include "logind-button.h"
35 #include "dbus-common.h"
37 Button* button_new(Manager *m, const char *name) {
47 b->name = strdup(name);
53 if (hashmap_put(m->buttons, b->name, b) < 0) {
65 void button_free(Button *b) {
68 hashmap_remove(b->manager->buttons, b->name);
71 hashmap_remove(b->manager->button_fds, INT_TO_PTR(b->fd + 1));
72 assert_se(epoll_ctl(b->manager->epoll_fd, EPOLL_CTL_DEL, b->fd, NULL) == 0);
73 close_nointr_nofail(b->fd);
81 int button_set_seat(Button *b, const char *sn) {
97 int button_open(Button *b) {
99 struct epoll_event ev;
105 close_nointr_nofail(b->fd);
109 p = strappend("/dev/input/", b->name);
113 b->fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
116 log_warning("Failed to open %s: %m", b->name);
120 if (ioctl(b->fd, EVIOCGNAME(sizeof(name)), name) < 0) {
121 log_error("Failed to get input name: %m");
128 ev.data.u32 = FD_OTHER_BASE + b->fd;
130 if (epoll_ctl(b->manager->epoll_fd, EPOLL_CTL_ADD, b->fd, &ev) < 0) {
131 log_error("Failed to add to epoll: %m");
136 r = hashmap_put(b->manager->button_fds, INT_TO_PTR(b->fd + 1), b);
138 log_error("Failed to add to hash map: %s", strerror(-r));
139 assert_se(epoll_ctl(b->manager->epoll_fd, EPOLL_CTL_DEL, b->fd, NULL) == 0);
143 log_info("Watching system buttons on /dev/input/%s (%s)", b->name, name);
148 close_nointr_nofail(b->fd);
153 static int button_handle(
155 InhibitWhat inhibit_key,
157 bool ignore_inhibited,
160 static const char * const message_table[_HANDLE_BUTTON_MAX] = {
161 [HANDLE_POWEROFF] = "Powering Off...",
162 [HANDLE_REBOOT] = "Rebooting...",
163 [HANDLE_HALT] = "Halting...",
164 [HANDLE_KEXEC] = "Rebooting via kexec...",
165 [HANDLE_SUSPEND] = "Suspending...",
166 [HANDLE_HIBERNATE] = "Hibernating...",
167 [HANDLE_HYBRID_SLEEP] = "Hibernating and suspend...",
170 static const char * const target_table[_HANDLE_BUTTON_MAX] = {
171 [HANDLE_POWEROFF] = SPECIAL_POWEROFF_TARGET,
172 [HANDLE_REBOOT] = SPECIAL_REBOOT_TARGET,
173 [HANDLE_HALT] = SPECIAL_HALT_TARGET,
174 [HANDLE_KEXEC] = SPECIAL_KEXEC_TARGET,
175 [HANDLE_SUSPEND] = SPECIAL_SUSPEND_TARGET,
176 [HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
177 [HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET
182 InhibitWhat inhibit_operation;
186 /* If the key handling is turned off, don't do anything */
187 if (handle == HANDLE_IGNORE) {
188 log_debug("Refusing key handling, as it is turned off.");
192 /* If the key handling is inhibited, don't do anything */
193 if (manager_is_inhibited(b->manager, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0)) {
194 log_debug("Refusing key handling, %s is inhibited.", inhibit_what_to_string(inhibit_key));
198 inhibit_operation = handle == HANDLE_SUSPEND || handle == HANDLE_HIBERNATE || handle == HANDLE_HYBRID_SLEEP ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN;
200 /* If the actual operation is inhibited, warn and fail */
201 if (!ignore_inhibited &&
202 manager_is_inhibited(b->manager, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0)) {
205 /* If this is just a recheck of the lid switch then don't warn about anything */
207 log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_operation));
211 log_error("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_operation));
216 log_info("%s", message_table[handle]);
218 /* We are executing the operation, so make sure we don't
219 * execute another one until the lid is opened/closed again */
220 b->lid_close_queued = false;
222 dbus_error_init(&error);
223 r = bus_manager_shutdown_or_sleep_now_or_later(b->manager, target_table[handle], inhibit_operation, &error);
225 log_error("Failed to execute operation: %s", bus_error_message(&error));
226 dbus_error_free(&error);
233 int button_process(Button *b) {
234 struct input_event ev;
239 l = read(b->fd, &ev, sizeof(ev));
241 return errno != EAGAIN ? -errno : 0;
242 if ((size_t) l < sizeof(ev))
245 if (ev.type == EV_KEY && ev.value > 0) {
251 log_info("Power key pressed.");
252 return button_handle(b, INHIBIT_HANDLE_POWER_KEY, b->manager->handle_power_key, b->manager->power_key_ignore_inhibited, true);
254 /* The kernel is a bit confused here:
256 KEY_SLEEP = suspend-to-ram, which everybody else calls "suspend"
257 KEY_SUSPEND = suspend-to-disk, which everybody else calls "hibernate"
261 log_info("Suspend key pressed.");
262 return button_handle(b, INHIBIT_HANDLE_SUSPEND_KEY, b->manager->handle_suspend_key, b->manager->suspend_key_ignore_inhibited, true);
265 log_info("Hibernate key pressed.");
266 return button_handle(b, INHIBIT_HANDLE_HIBERNATE_KEY, b->manager->handle_hibernate_key, b->manager->hibernate_key_ignore_inhibited, true);
269 } else if (ev.type == EV_SW && ev.value > 0) {
274 log_info("Lid closed.");
275 b->lid_close_queued = true;
277 return button_handle(b, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited, true);
280 } else if (ev.type == EV_SW && ev.value == 0) {
285 log_info("Lid opened.");
286 b->lid_close_queued = false;
294 int button_recheck(Button *b) {
297 if (!b->lid_close_queued)
300 return button_handle(b, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited, false);
303 static const char* const handle_button_table[_HANDLE_BUTTON_MAX] = {
304 [HANDLE_IGNORE] = "ignore",
305 [HANDLE_POWEROFF] = "poweroff",
306 [HANDLE_REBOOT] = "reboot",
307 [HANDLE_HALT] = "halt",
308 [HANDLE_KEXEC] = "kexec",
309 [HANDLE_SUSPEND] = "suspend",
310 [HANDLE_HIBERNATE] = "hibernate",
311 [HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
313 DEFINE_STRING_TABLE_LOOKUP(handle_button, HandleButton);
314 DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_button, handle_button, HandleButton, "Failed to parse handle button setting");