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"
36 #include "sd-messages.h"
38 Button* button_new(Manager *m, const char *name) {
48 b->name = strdup(name);
54 if (hashmap_put(m->buttons, b->name, b) < 0) {
66 void button_free(Button *b) {
69 hashmap_remove(b->manager->buttons, b->name);
72 hashmap_remove(b->manager->button_fds, INT_TO_PTR(b->fd + 1));
73 assert_se(epoll_ctl(b->manager->epoll_fd, EPOLL_CTL_DEL, b->fd, NULL) == 0);
75 /* If the device has been unplugged close() returns
76 * ENODEV, let's ignore this, hence we don't use
77 * close_nointr_nofail() */
86 int button_set_seat(Button *b, const char *sn) {
102 int button_open(Button *b) {
104 struct epoll_event ev;
114 p = strappend("/dev/input/", b->name);
118 b->fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
121 log_warning("Failed to open %s: %m", b->name);
125 if (ioctl(b->fd, EVIOCGNAME(sizeof(name)), name) < 0) {
126 log_error("Failed to get input name: %m");
133 ev.data.u32 = FD_OTHER_BASE + b->fd;
135 if (epoll_ctl(b->manager->epoll_fd, EPOLL_CTL_ADD, b->fd, &ev) < 0) {
136 log_error("Failed to add to epoll: %m");
141 r = hashmap_put(b->manager->button_fds, INT_TO_PTR(b->fd + 1), b);
143 log_error("Failed to add to hash map: %s", strerror(-r));
144 assert_se(epoll_ctl(b->manager->epoll_fd, EPOLL_CTL_DEL, b->fd, NULL) == 0);
148 log_info("Watching system buttons on /dev/input/%s (%s)", b->name, name);
158 static int button_handle(
160 InhibitWhat inhibit_key,
162 bool ignore_inhibited,
169 r = manager_handle_action(b->manager, inhibit_key, handle, ignore_inhibited, is_edge);
171 /* We are executing the operation, so make sure we don't
172 * execute another one until the lid is opened/closed again */
173 b->lid_close_queued = false;
178 int button_process(Button *b) {
179 struct input_event ev;
184 l = read(b->fd, &ev, sizeof(ev));
186 return errno != EAGAIN ? -errno : 0;
187 if ((size_t) l < sizeof(ev))
190 if (ev.type == EV_KEY && ev.value > 0) {
197 "MESSAGE=Power key pressed.",
198 MESSAGE_ID(SD_MESSAGE_POWER_KEY),
200 return button_handle(b, INHIBIT_HANDLE_POWER_KEY, b->manager->handle_power_key, b->manager->power_key_ignore_inhibited, true);
202 /* The kernel is a bit confused here:
204 KEY_SLEEP = suspend-to-ram, which everybody else calls "suspend"
205 KEY_SUSPEND = suspend-to-disk, which everybody else calls "hibernate"
210 "MESSAGE=Suspend key pressed.",
211 MESSAGE_ID(SD_MESSAGE_SUSPEND_KEY),
213 return button_handle(b, INHIBIT_HANDLE_SUSPEND_KEY, b->manager->handle_suspend_key, b->manager->suspend_key_ignore_inhibited, true);
217 "MESSAGE=Hibernate key pressed.",
218 MESSAGE_ID(SD_MESSAGE_HIBERNATE_KEY),
220 return button_handle(b, INHIBIT_HANDLE_HIBERNATE_KEY, b->manager->handle_hibernate_key, b->manager->hibernate_key_ignore_inhibited, true);
223 } else if (ev.type == EV_SW && ev.value > 0) {
229 "MESSAGE=Lid closed.",
230 MESSAGE_ID(SD_MESSAGE_LID_CLOSED),
232 b->lid_close_queued = true;
234 return button_handle(b, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited, true);
237 } else if (ev.type == EV_SW && ev.value == 0) {
243 "MESSAGE=Lid opened.",
244 MESSAGE_ID(SD_MESSAGE_LID_OPENED),
246 b->lid_close_queued = false;
254 int button_recheck(Button *b) {
257 if (!b->lid_close_queued)
260 return button_handle(b, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited, false);