]>
Commit | Line | Data |
---|---|---|
e9d21f24 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2012 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
e9d21f24 LP |
20 | #include <errno.h> |
21 | #include <fcntl.h> | |
07630cea | 22 | #include <string.h> |
e9d21f24 LP |
23 | #include <sys/ioctl.h> |
24 | #include <unistd.h> | |
25 | #include <linux/input.h> | |
e9d21f24 | 26 | |
cc377381 | 27 | #include "sd-messages.h" |
07630cea | 28 | |
b5efdb8a | 29 | #include "alloc-util.h" |
3ffd4af2 LP |
30 | #include "fd-util.h" |
31 | #include "logind-button.h" | |
07630cea | 32 | #include "string-util.h" |
e9d21f24 | 33 | #include "util.h" |
e9d21f24 LP |
34 | |
35 | Button* button_new(Manager *m, const char *name) { | |
36 | Button *b; | |
37 | ||
38 | assert(m); | |
39 | assert(name); | |
40 | ||
41 | b = new0(Button, 1); | |
42 | if (!b) | |
43 | return NULL; | |
44 | ||
45 | b->name = strdup(name); | |
6b430fdb ZJS |
46 | if (!b->name) |
47 | return mfree(b); | |
e9d21f24 LP |
48 | |
49 | if (hashmap_put(m->buttons, b->name, b) < 0) { | |
50 | free(b->name); | |
6b430fdb | 51 | return mfree(b); |
e9d21f24 LP |
52 | } |
53 | ||
54 | b->manager = m; | |
55 | b->fd = -1; | |
56 | ||
57 | return b; | |
58 | } | |
59 | ||
60 | void button_free(Button *b) { | |
61 | assert(b); | |
62 | ||
63 | hashmap_remove(b->manager->buttons, b->name); | |
64 | ||
ed4ba7e4 LP |
65 | sd_event_source_unref(b->io_event_source); |
66 | sd_event_source_unref(b->check_event_source); | |
c30a0c62 | 67 | |
ece174c5 | 68 | if (b->fd >= 0) |
c30a0c62 LP |
69 | /* If the device has been unplugged close() returns |
70 | * ENODEV, let's ignore this, hence we don't use | |
03e334a1 | 71 | * safe_close() */ |
4fba5796 | 72 | (void) close(b->fd); |
e9d21f24 LP |
73 | |
74 | free(b->name); | |
75 | free(b->seat); | |
76 | free(b); | |
77 | } | |
78 | ||
79 | int button_set_seat(Button *b, const char *sn) { | |
80 | char *s; | |
81 | ||
82 | assert(b); | |
83 | assert(sn); | |
84 | ||
85 | s = strdup(sn); | |
86 | if (!s) | |
87 | return -ENOMEM; | |
88 | ||
89 | free(b->seat); | |
90 | b->seat = s; | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
3c56cab4 BW |
95 | static void button_lid_switch_handle_action(Manager *manager, bool is_edge) { |
96 | HandleAction handle_action; | |
97 | ||
98 | assert(manager); | |
99 | ||
100 | /* If we are docked, handle the lid switch differently */ | |
602a41c2 | 101 | if (manager_is_docked_or_external_displays(manager)) |
3c56cab4 BW |
102 | handle_action = manager->handle_lid_switch_docked; |
103 | else | |
104 | handle_action = manager->handle_lid_switch; | |
105 | ||
106 | manager_handle_action(manager, INHIBIT_HANDLE_LID_SWITCH, handle_action, manager->lid_switch_ignore_inhibited, is_edge); | |
107 | } | |
108 | ||
ed4ba7e4 LP |
109 | static int button_recheck(sd_event_source *e, void *userdata) { |
110 | Button *b = userdata; | |
beaafb2e | 111 | |
ed4ba7e4 LP |
112 | assert(b); |
113 | assert(b->lid_closed); | |
114 | ||
3c56cab4 | 115 | button_lid_switch_handle_action(b->manager, false); |
ed4ba7e4 LP |
116 | return 1; |
117 | } | |
e9d21f24 | 118 | |
ed4ba7e4 LP |
119 | static int button_install_check_event_source(Button *b) { |
120 | int r; | |
e9d21f24 LP |
121 | assert(b); |
122 | ||
ed4ba7e4 | 123 | /* Install a post handler, so that we keep rechecking as long as the lid is closed. */ |
6de0e0e5 | 124 | |
ed4ba7e4 LP |
125 | if (b->check_event_source) |
126 | return 0; | |
127 | ||
128 | r = sd_event_add_post(b->manager->event, &b->check_event_source, button_recheck, b); | |
129 | if (r < 0) | |
130 | return r; | |
131 | ||
132 | return sd_event_source_set_priority(b->check_event_source, SD_EVENT_PRIORITY_IDLE+1); | |
e9d21f24 LP |
133 | } |
134 | ||
cc377381 LP |
135 | static int button_dispatch(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
136 | Button *b = userdata; | |
e9d21f24 LP |
137 | struct input_event ev; |
138 | ssize_t l; | |
139 | ||
cc377381 LP |
140 | assert(s); |
141 | assert(fd == b->fd); | |
e9d21f24 LP |
142 | assert(b); |
143 | ||
144 | l = read(b->fd, &ev, sizeof(ev)); | |
145 | if (l < 0) | |
146 | return errno != EAGAIN ? -errno : 0; | |
147 | if ((size_t) l < sizeof(ev)) | |
148 | return -EIO; | |
149 | ||
e9d21f24 LP |
150 | if (ev.type == EV_KEY && ev.value > 0) { |
151 | ||
152 | switch (ev.code) { | |
153 | ||
154 | case KEY_POWER: | |
155 | case KEY_POWER2: | |
c485437f | 156 | log_struct(LOG_INFO, |
e2cc6eca LP |
157 | LOG_MESSAGE("Power key pressed."), |
158 | LOG_MESSAGE_ID(SD_MESSAGE_POWER_KEY), | |
c485437f | 159 | NULL); |
7b77ed8c | 160 | |
ed4ba7e4 | 161 | manager_handle_action(b->manager, INHIBIT_HANDLE_POWER_KEY, b->manager->handle_power_key, b->manager->power_key_ignore_inhibited, true); |
7b77ed8c | 162 | break; |
e9d21f24 | 163 | |
8e7fd6ad LP |
164 | /* The kernel is a bit confused here: |
165 | ||
166 | KEY_SLEEP = suspend-to-ram, which everybody else calls "suspend" | |
167 | KEY_SUSPEND = suspend-to-disk, which everybody else calls "hibernate" | |
168 | */ | |
169 | ||
e9d21f24 | 170 | case KEY_SLEEP: |
c485437f | 171 | log_struct(LOG_INFO, |
e2cc6eca LP |
172 | LOG_MESSAGE("Suspend key pressed."), |
173 | LOG_MESSAGE_ID(SD_MESSAGE_SUSPEND_KEY), | |
c485437f | 174 | NULL); |
7b77ed8c | 175 | |
ed4ba7e4 | 176 | manager_handle_action(b->manager, INHIBIT_HANDLE_SUSPEND_KEY, b->manager->handle_suspend_key, b->manager->suspend_key_ignore_inhibited, true); |
7b77ed8c | 177 | break; |
e9d21f24 | 178 | |
8e7fd6ad | 179 | case KEY_SUSPEND: |
c485437f | 180 | log_struct(LOG_INFO, |
e2cc6eca LP |
181 | LOG_MESSAGE("Hibernate key pressed."), |
182 | LOG_MESSAGE_ID(SD_MESSAGE_HIBERNATE_KEY), | |
c485437f | 183 | NULL); |
7b77ed8c | 184 | |
ed4ba7e4 | 185 | manager_handle_action(b->manager, INHIBIT_HANDLE_HIBERNATE_KEY, b->manager->handle_hibernate_key, b->manager->hibernate_key_ignore_inhibited, true); |
7b77ed8c | 186 | break; |
e9d21f24 | 187 | } |
8e7fd6ad | 188 | |
e9d21f24 LP |
189 | } else if (ev.type == EV_SW && ev.value > 0) { |
190 | ||
7b77ed8c | 191 | if (ev.code == SW_LID) { |
c485437f | 192 | log_struct(LOG_INFO, |
e2cc6eca LP |
193 | LOG_MESSAGE("Lid closed."), |
194 | LOG_MESSAGE_ID(SD_MESSAGE_LID_CLOSED), | |
c485437f | 195 | NULL); |
65b51162 | 196 | |
ed4ba7e4 | 197 | b->lid_closed = true; |
3c56cab4 | 198 | button_lid_switch_handle_action(b->manager, true); |
ed4ba7e4 | 199 | button_install_check_event_source(b); |
2d62c530 LP |
200 | |
201 | } else if (ev.code == SW_DOCK) { | |
202 | log_struct(LOG_INFO, | |
e2cc6eca LP |
203 | LOG_MESSAGE("System docked."), |
204 | LOG_MESSAGE_ID(SD_MESSAGE_SYSTEM_DOCKED), | |
2d62c530 LP |
205 | NULL); |
206 | ||
207 | b->docked = true; | |
65b51162 LP |
208 | } |
209 | ||
210 | } else if (ev.type == EV_SW && ev.value == 0) { | |
211 | ||
7b77ed8c | 212 | if (ev.code == SW_LID) { |
c485437f | 213 | log_struct(LOG_INFO, |
e2cc6eca LP |
214 | LOG_MESSAGE("Lid opened."), |
215 | LOG_MESSAGE_ID(SD_MESSAGE_LID_OPENED), | |
c485437f | 216 | NULL); |
7b77ed8c | 217 | |
ed4ba7e4 LP |
218 | b->lid_closed = false; |
219 | b->check_event_source = sd_event_source_unref(b->check_event_source); | |
2d62c530 LP |
220 | |
221 | } else if (ev.code == SW_DOCK) { | |
222 | log_struct(LOG_INFO, | |
e2cc6eca LP |
223 | LOG_MESSAGE("System undocked."), |
224 | LOG_MESSAGE_ID(SD_MESSAGE_SYSTEM_UNDOCKED), | |
2d62c530 LP |
225 | NULL); |
226 | ||
227 | b->docked = false; | |
e9d21f24 LP |
228 | } |
229 | } | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
cc377381 LP |
234 | int button_open(Button *b) { |
235 | char *p, name[256]; | |
236 | int r; | |
237 | ||
238 | assert(b); | |
239 | ||
7f6e12b0 | 240 | b->fd = safe_close(b->fd); |
cc377381 | 241 | |
63c372cb | 242 | p = strjoina("/dev/input/", b->name); |
cc377381 LP |
243 | |
244 | b->fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK); | |
4a62c710 MS |
245 | if (b->fd < 0) |
246 | return log_warning_errno(errno, "Failed to open %s: %m", b->name); | |
cc377381 LP |
247 | |
248 | if (ioctl(b->fd, EVIOCGNAME(sizeof(name)), name) < 0) { | |
76ef789d | 249 | r = log_error_errno(errno, "Failed to get input name: %m"); |
cc377381 LP |
250 | goto fail; |
251 | } | |
252 | ||
ed4ba7e4 | 253 | r = sd_event_add_io(b->manager->event, &b->io_event_source, b->fd, EPOLLIN, button_dispatch, b); |
cc377381 | 254 | if (r < 0) { |
da927ba9 | 255 | log_error_errno(r, "Failed to add button event: %m"); |
cc377381 LP |
256 | goto fail; |
257 | } | |
258 | ||
259 | log_info("Watching system buttons on /dev/input/%s (%s)", b->name, name); | |
260 | ||
261 | return 0; | |
262 | ||
263 | fail: | |
66e40583 | 264 | b->fd = safe_close(b->fd); |
cc377381 LP |
265 | return r; |
266 | } | |
267 | ||
2d62c530 | 268 | int button_check_switches(Button *b) { |
ed4ba7e4 | 269 | uint8_t switches[SW_MAX/8+1] = {}; |
65b51162 LP |
270 | assert(b); |
271 | ||
ed4ba7e4 LP |
272 | if (b->fd < 0) |
273 | return -EINVAL; | |
274 | ||
275 | if (ioctl(b->fd, EVIOCGSW(sizeof(switches)), switches) < 0) | |
276 | return -errno; | |
65b51162 | 277 | |
ed4ba7e4 | 278 | b->lid_closed = (switches[SW_LID/8] >> (SW_LID % 8)) & 1; |
2d62c530 | 279 | b->docked = (switches[SW_DOCK/8] >> (SW_DOCK % 8)) & 1; |
ed4ba7e4 | 280 | |
2d62c530 | 281 | if (b->lid_closed) |
ed4ba7e4 | 282 | button_install_check_event_source(b); |
ed4ba7e4 LP |
283 | |
284 | return 0; | |
65b51162 | 285 | } |