]>
Commit | Line | Data |
---|---|---|
db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
20263082 LP |
2 | |
3 | #include <errno.h> | |
20263082 | 4 | #include <fcntl.h> |
ac4e03d4 | 5 | #include <sys/types.h> |
20263082 | 6 | #include <unistd.h> |
20263082 | 7 | |
cc377381 | 8 | #include "sd-daemon.h" |
4f209af7 | 9 | #include "sd-device.h" |
07630cea | 10 | |
b5efdb8a | 11 | #include "alloc-util.h" |
cc377381 | 12 | #include "bus-error.h" |
9b71e4ab | 13 | #include "bus-locator.h" |
ac9f55ed | 14 | #include "bus-log-control-api.h" |
269e4d2d | 15 | #include "bus-polkit.h" |
dccca82b | 16 | #include "cgroup-util.h" |
92e1a209 | 17 | #include "common-signal.h" |
28db6fbf | 18 | #include "constants.h" |
21fe744c | 19 | #include "daemon-util.h" |
8437c059 | 20 | #include "device-util.h" |
a0956174 | 21 | #include "dirent-util.h" |
f38e89c2 | 22 | #include "escape.h" |
3ffd4af2 | 23 | #include "fd-util.h" |
f97b34a6 | 24 | #include "format-util.h" |
af229d7a | 25 | #include "fs-util.h" |
6ecda0fb LP |
26 | #include "logind-dbus.h" |
27 | #include "logind-seat-dbus.h" | |
28 | #include "logind-session-dbus.h" | |
29 | #include "logind-user-dbus.h" | |
3ffd4af2 | 30 | #include "logind.h" |
5e332028 | 31 | #include "main-func.h" |
35cd0ba5 | 32 | #include "mkdir-label.h" |
1bef256c | 33 | #include "parse-util.h" |
dccca82b | 34 | #include "process-util.h" |
4b51966c | 35 | #include "selinux-util.h" |
fc021a5b | 36 | #include "service-util.h" |
24882e06 | 37 | #include "signal-util.h" |
07630cea | 38 | #include "strv.h" |
adb8688b | 39 | #include "terminal-util.h" |
91bd2c34 | 40 | #include "udev-util.h" |
ac4e03d4 | 41 | #include "user-util.h" |
20263082 | 42 | |
5ce8ce90 DT |
43 | static Manager* manager_free(Manager *m); |
44 | DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free); | |
905f0a39 | 45 | |
2d7cbead MY |
46 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(device_hash_ops, char, string_hash_func, string_compare_func, Device, device_free); |
47 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(seat_hash_ops, char, string_hash_func, string_compare_func, Seat, seat_free); | |
48 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(session_hash_ops, char, string_hash_func, string_compare_func, Session, session_free); | |
49 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(user_hash_ops, void, trivial_hash_func, trivial_compare_func, User, user_free); | |
50 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(inhibitor_hash_ops, char, string_hash_func, string_compare_func, Inhibitor, inhibitor_free); | |
51 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(button_hash_ops, char, string_hash_func, string_compare_func, Button, button_free); | |
52 | ||
23462168 | 53 | static int manager_new(Manager **ret) { |
5ce8ce90 | 54 | _cleanup_(manager_freep) Manager *m = NULL; |
a2ed7077 ZJS |
55 | int r; |
56 | ||
23462168 LP |
57 | assert(ret); |
58 | ||
b25ba6cf | 59 | m = new(Manager, 1); |
a2ed7077 | 60 | if (!m) |
23462168 | 61 | return -ENOMEM; |
a2ed7077 | 62 | |
b25ba6cf | 63 | *m = (Manager) { |
254d1313 ZJS |
64 | .console_active_fd = -EBADF, |
65 | .reserve_vt_fd = -EBADF, | |
cdf37062 | 66 | .enable_wall_messages = true, |
e83b8b6b | 67 | .idle_action_not_before_usec = now(CLOCK_MONOTONIC), |
b25ba6cf | 68 | }; |
a2ed7077 | 69 | |
2d7cbead MY |
70 | m->devices = hashmap_new(&device_hash_ops); |
71 | m->seats = hashmap_new(&seat_hash_ops); | |
72 | m->sessions = hashmap_new(&session_hash_ops); | |
2d7cbead MY |
73 | m->users = hashmap_new(&user_hash_ops); |
74 | m->inhibitors = hashmap_new(&inhibitor_hash_ops); | |
75 | m->buttons = hashmap_new(&button_hash_ops); | |
f8e2fb7b | 76 | |
d5099efc MS |
77 | m->user_units = hashmap_new(&string_hash_ops); |
78 | m->session_units = hashmap_new(&string_hash_ops); | |
8c8c4351 | 79 | |
8494f562 | 80 | if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units) |
23462168 | 81 | return -ENOMEM; |
25d93491 | 82 | |
afc6adb5 | 83 | r = sd_event_default(&m->event); |
ed4ba7e4 | 84 | if (r < 0) |
23462168 | 85 | return r; |
cc377381 | 86 | |
fcfa765d LP |
87 | r = sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL); |
88 | if (r < 0) | |
89 | return r; | |
90 | ||
91 | r = sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL); | |
92 | if (r < 0) | |
93 | return r; | |
94 | ||
92e1a209 LP |
95 | r = sd_event_add_signal(m->event, NULL, SIGRTMIN+18, sigrtmin18_handler, NULL); |
96 | if (r < 0) | |
97 | return r; | |
98 | ||
99 | r = sd_event_add_memory_pressure(m->event, NULL, NULL, NULL); | |
100 | if (r < 0) | |
101 | log_debug_errno(r, "Failed allocate memory pressure event source, ignoring: %m"); | |
102 | ||
23462168 | 103 | (void) sd_event_set_watchdog(m->event, true); |
cde93897 | 104 | |
a2ed7077 ZJS |
105 | manager_reset_config(m); |
106 | ||
23462168 LP |
107 | *ret = TAKE_PTR(m); |
108 | return 0; | |
20263082 LP |
109 | } |
110 | ||
5ce8ce90 | 111 | static Manager* manager_free(Manager *m) { |
84a4e660 | 112 | if (!m) |
23462168 | 113 | return NULL; |
20263082 | 114 | |
20263082 LP |
115 | hashmap_free(m->devices); |
116 | hashmap_free(m->seats); | |
f8e2fb7b | 117 | hashmap_free(m->sessions); |
8494f562 MY |
118 | |
119 | /* All records should have been removed by session_free */ | |
120 | assert(hashmap_isempty(m->sessions_by_leader)); | |
238794b1 | 121 | hashmap_free(m->sessions_by_leader); |
8494f562 | 122 | |
f8e2fb7b LP |
123 | hashmap_free(m->users); |
124 | hashmap_free(m->inhibitors); | |
069cfc85 | 125 | hashmap_free(m->buttons); |
2a66c2a1 | 126 | hashmap_free(m->brightness_writers); |
f8e2fb7b | 127 | |
fb6becb4 LP |
128 | hashmap_free(m->user_units); |
129 | hashmap_free(m->session_units); | |
8c8c4351 | 130 | |
cc377381 | 131 | sd_event_source_unref(m->idle_action_event_source); |
c0f32805 | 132 | sd_event_source_unref(m->inhibit_timeout_source); |
8aaa023a | 133 | sd_event_source_unref(m->scheduled_shutdown_timeout_source); |
867c37f6 | 134 | sd_event_source_unref(m->nologin_timeout_source); |
e2fa5721 | 135 | sd_event_source_unref(m->wall_message_timeout_source); |
cc377381 LP |
136 | |
137 | sd_event_source_unref(m->console_active_event_source); | |
f9cd6be1 | 138 | sd_event_source_unref(m->lid_switch_ignore_event_source); |
20263082 | 139 | |
a520bb66 YA |
140 | sd_event_source_unref(m->reboot_key_long_press_event_source); |
141 | ||
3d0ef5c7 LP |
142 | #if ENABLE_UTMP |
143 | sd_event_source_unref(m->utmp_event_source); | |
144 | #endif | |
145 | ||
03e334a1 | 146 | safe_close(m->console_active_fd); |
20263082 | 147 | |
eb968396 YW |
148 | sd_device_monitor_unref(m->device_seat_monitor); |
149 | sd_device_monitor_unref(m->device_monitor); | |
150 | sd_device_monitor_unref(m->device_vcsa_monitor); | |
151 | sd_device_monitor_unref(m->device_button_monitor); | |
3e044c49 | 152 | |
867c37f6 | 153 | if (m->unlink_nologin) |
af229d7a | 154 | (void) unlink_or_warn("/run/nologin"); |
867c37f6 | 155 | |
36e34057 | 156 | bus_verify_polkit_async_registry_free(m->polkit_registry); |
20263082 | 157 | |
92e31da1 | 158 | sd_bus_flush_close_unref(m->bus); |
cc377381 | 159 | sd_event_unref(m->event); |
20263082 | 160 | |
03e334a1 | 161 | safe_close(m->reserve_vt_fd); |
98a77df5 | 162 | |
193197e8 LP |
163 | strv_free(m->kill_only_users); |
164 | strv_free(m->kill_exclude_users); | |
165 | ||
e2fa5721 DM |
166 | free(m->scheduled_shutdown_tty); |
167 | free(m->wall_message); | |
af9792ac | 168 | free(m->action_job); |
23462168 | 169 | |
d4bd786d | 170 | strv_free(m->efi_boot_loader_entries); |
af2697e8 | 171 | free(m->efi_loader_entry_one_shot); |
d4bd786d | 172 | |
23462168 | 173 | return mfree(m); |
20263082 LP |
174 | } |
175 | ||
9588bc32 | 176 | static int manager_enumerate_devices(Manager *m) { |
4f209af7 | 177 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; |
14c3baca | 178 | int r; |
20263082 LP |
179 | |
180 | assert(m); | |
181 | ||
182 | /* Loads devices from udev and creates seats for them as | |
183 | * necessary */ | |
184 | ||
4f209af7 | 185 | r = sd_device_enumerator_new(&e); |
14c3baca | 186 | if (r < 0) |
bf5332d2 | 187 | return r; |
20263082 | 188 | |
4f209af7 | 189 | r = sd_device_enumerator_add_match_tag(e, "master-of-seat"); |
e1202047 LP |
190 | if (r < 0) |
191 | return r; | |
192 | ||
8437c059 | 193 | FOREACH_DEVICE(e, d) { |
20263082 LP |
194 | int k; |
195 | ||
bf5332d2 | 196 | k = manager_process_seat_device(m, d); |
20263082 LP |
197 | if (k < 0) |
198 | r = k; | |
199 | } | |
200 | ||
20263082 LP |
201 | return r; |
202 | } | |
203 | ||
9588bc32 | 204 | static int manager_enumerate_buttons(Manager *m) { |
4f209af7 | 205 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; |
069cfc85 LP |
206 | int r; |
207 | ||
208 | assert(m); | |
209 | ||
210 | /* Loads buttons from udev */ | |
211 | ||
e25937a3 | 212 | if (manager_all_buttons_ignored(m)) |
6de0e0e5 LP |
213 | return 0; |
214 | ||
4f209af7 | 215 | r = sd_device_enumerator_new(&e); |
069cfc85 | 216 | if (r < 0) |
bf5332d2 | 217 | return r; |
069cfc85 | 218 | |
4f209af7 | 219 | r = sd_device_enumerator_add_match_subsystem(e, "input", true); |
069cfc85 | 220 | if (r < 0) |
bf5332d2 | 221 | return r; |
069cfc85 | 222 | |
4f209af7 | 223 | r = sd_device_enumerator_add_match_tag(e, "power-switch"); |
e1202047 LP |
224 | if (r < 0) |
225 | return r; | |
226 | ||
8437c059 | 227 | FOREACH_DEVICE(e, d) { |
069cfc85 LP |
228 | int k; |
229 | ||
bf5332d2 | 230 | k = manager_process_button_device(m, d); |
069cfc85 LP |
231 | if (k < 0) |
232 | r = k; | |
233 | } | |
234 | ||
069cfc85 LP |
235 | return r; |
236 | } | |
237 | ||
9588bc32 | 238 | static int manager_enumerate_seats(Manager *m) { |
9444b1f2 | 239 | _cleanup_closedir_ DIR *d = NULL; |
20263082 LP |
240 | int r = 0; |
241 | ||
242 | assert(m); | |
243 | ||
244 | /* This loads data about seats stored on disk, but does not | |
245 | * actually create any seats. Removes data of seats that no | |
246 | * longer exist. */ | |
247 | ||
248 | d = opendir("/run/systemd/seats"); | |
249 | if (!d) { | |
250 | if (errno == ENOENT) | |
251 | return 0; | |
252 | ||
e1427b13 | 253 | return log_error_errno(errno, "Failed to open /run/systemd/seats: %m"); |
20263082 LP |
254 | } |
255 | ||
9444b1f2 | 256 | FOREACH_DIRENT(de, d, return -errno) { |
20263082 LP |
257 | Seat *s; |
258 | int k; | |
259 | ||
260 | if (!dirent_is_file(de)) | |
261 | continue; | |
262 | ||
263 | s = hashmap_get(m->seats, de->d_name); | |
264 | if (!s) { | |
cb51ee7a | 265 | if (unlinkat(dirfd(d), de->d_name, 0) < 0) |
19cdcd5d | 266 | log_warning_errno(errno, "Failed to remove /run/systemd/seats/%s, ignoring: %m", |
111a3aae | 267 | de->d_name); |
20263082 LP |
268 | continue; |
269 | } | |
270 | ||
271 | k = seat_load(s); | |
272 | if (k < 0) | |
273 | r = k; | |
274 | } | |
275 | ||
14c3baca LP |
276 | return r; |
277 | } | |
20263082 | 278 | |
14c3baca | 279 | static int manager_enumerate_linger_users(Manager *m) { |
9444b1f2 | 280 | _cleanup_closedir_ DIR *d = NULL; |
14c3baca LP |
281 | int r = 0; |
282 | ||
9444b1f2 LP |
283 | assert(m); |
284 | ||
14c3baca LP |
285 | d = opendir("/var/lib/systemd/linger"); |
286 | if (!d) { | |
287 | if (errno == ENOENT) | |
288 | return 0; | |
289 | ||
e1427b13 | 290 | return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m"); |
14c3baca LP |
291 | } |
292 | ||
9444b1f2 | 293 | FOREACH_DIRENT(de, d, return -errno) { |
14c3baca | 294 | int k; |
f38e89c2 | 295 | _cleanup_free_ char *n = NULL; |
14c3baca LP |
296 | |
297 | if (!dirent_is_file(de)) | |
20263082 | 298 | continue; |
f38e89c2 MK |
299 | k = cunescape(de->d_name, 0, &n); |
300 | if (k < 0) { | |
301 | r = log_warning_errno(k, "Failed to unescape username '%s', ignoring: %m", de->d_name); | |
302 | continue; | |
303 | } | |
304 | k = manager_add_user_by_name(m, n, NULL); | |
20fff3de LP |
305 | if (k < 0) |
306 | r = log_warning_errno(k, "Couldn't add lingering user %s, ignoring: %m", de->d_name); | |
20263082 LP |
307 | } |
308 | ||
20263082 LP |
309 | return r; |
310 | } | |
311 | ||
9588bc32 | 312 | static int manager_enumerate_users(Manager *m) { |
9444b1f2 | 313 | _cleanup_closedir_ DIR *d = NULL; |
14c3baca | 314 | int r, k; |
20263082 LP |
315 | |
316 | assert(m); | |
317 | ||
9444b1f2 | 318 | /* Add lingering users */ |
b3629c7d | 319 | r = manager_enumerate_linger_users(m); |
14c3baca | 320 | |
9444b1f2 | 321 | /* Read in user data stored on disk */ |
20263082 LP |
322 | d = opendir("/run/systemd/users"); |
323 | if (!d) { | |
324 | if (errno == ENOENT) | |
325 | return 0; | |
326 | ||
e1427b13 | 327 | return log_error_errno(errno, "Failed to open /run/systemd/users: %m"); |
20263082 LP |
328 | } |
329 | ||
9444b1f2 | 330 | FOREACH_DIRENT(de, d, return -errno) { |
20263082 | 331 | User *u; |
ac4e03d4 | 332 | uid_t uid; |
20263082 LP |
333 | |
334 | if (!dirent_is_file(de)) | |
335 | continue; | |
336 | ||
ac4e03d4 JP |
337 | k = parse_uid(de->d_name, &uid); |
338 | if (k < 0) { | |
339 | r = log_warning_errno(k, "Failed to parse filename /run/systemd/users/%s as UID.", de->d_name); | |
340 | continue; | |
341 | } | |
342 | ||
343 | k = manager_add_user_by_uid(m, uid, &u); | |
20263082 | 344 | if (k < 0) { |
20fff3de | 345 | r = log_warning_errno(k, "Failed to add user by file name %s, ignoring: %m", de->d_name); |
20263082 LP |
346 | continue; |
347 | } | |
348 | ||
9444b1f2 LP |
349 | user_add_to_gc_queue(u); |
350 | ||
20263082 LP |
351 | k = user_load(u); |
352 | if (k < 0) | |
353 | r = k; | |
354 | } | |
355 | ||
20263082 LP |
356 | return r; |
357 | } | |
358 | ||
1bef256c AJ |
359 | static int parse_fdname(const char *fdname, char **session_id, dev_t *dev) { |
360 | _cleanup_strv_free_ char **parts = NULL; | |
361 | _cleanup_free_ char *id = NULL; | |
14cb109d | 362 | unsigned major, minor; |
1bef256c AJ |
363 | int r; |
364 | ||
365 | parts = strv_split(fdname, "-"); | |
366 | if (!parts) | |
367 | return -ENOMEM; | |
368 | if (strv_length(parts) != 5) | |
369 | return -EINVAL; | |
370 | ||
371 | if (!streq(parts[0], "session")) | |
372 | return -EINVAL; | |
36591e10 | 373 | |
1bef256c AJ |
374 | id = strdup(parts[1]); |
375 | if (!id) | |
376 | return -ENOMEM; | |
377 | ||
378 | if (!streq(parts[2], "device")) | |
379 | return -EINVAL; | |
36591e10 ZJS |
380 | |
381 | r = safe_atou(parts[3], &major); | |
382 | if (r < 0) | |
383 | return r; | |
384 | r = safe_atou(parts[4], &minor); | |
1bef256c AJ |
385 | if (r < 0) |
386 | return r; | |
387 | ||
388 | *dev = makedev(major, minor); | |
ae2a15bc | 389 | *session_id = TAKE_PTR(id); |
1bef256c AJ |
390 | |
391 | return 0; | |
392 | } | |
393 | ||
efc19ee4 LP |
394 | static int deliver_fd(Manager *m, const char *fdname, int fd) { |
395 | _cleanup_free_ char *id = NULL; | |
396 | SessionDevice *sd; | |
397 | struct stat st; | |
398 | Session *s; | |
399 | dev_t dev; | |
400 | int r; | |
401 | ||
402 | assert(m); | |
403 | assert(fd >= 0); | |
404 | ||
405 | r = parse_fdname(fdname, &id, &dev); | |
406 | if (r < 0) | |
407 | return log_debug_errno(r, "Failed to parse fd name %s: %m", fdname); | |
408 | ||
409 | s = hashmap_get(m->sessions, id); | |
410 | if (!s) | |
411 | /* If the session doesn't exist anymore, the associated session device attached to this fd | |
412 | * doesn't either. Let's simply close this fd. */ | |
413 | return log_debug_errno(SYNTHETIC_ERRNO(ENXIO), "Failed to attach fd for unknown session: %s", id); | |
414 | ||
415 | if (fstat(fd, &st) < 0) | |
416 | /* The device is allowed to go away at a random point, in which case fstat() failing is | |
417 | * expected. */ | |
418 | return log_debug_errno(errno, "Failed to stat device fd for session %s: %m", id); | |
419 | ||
420 | if (!S_ISCHR(st.st_mode) || st.st_rdev != dev) | |
421 | return log_debug_errno(SYNTHETIC_ERRNO(ENODEV), "Device fd doesn't point to the expected character device node"); | |
422 | ||
423 | sd = hashmap_get(s->devices, &dev); | |
424 | if (!sd) | |
425 | /* Weird, we got an fd for a session device which wasn't recorded in the session state | |
426 | * file... */ | |
427 | return log_warning_errno(SYNTHETIC_ERRNO(ENODEV), "Got fd for missing session device [%u:%u] in session %s", | |
428 | major(dev), minor(dev), s->id); | |
429 | ||
430 | log_debug("Attaching fd to session device [%u:%u] for session %s", | |
431 | major(dev), minor(dev), s->id); | |
432 | ||
433 | session_device_attach_fd(sd, fd, s->was_active); | |
434 | return 0; | |
435 | } | |
436 | ||
aed24c4c FB |
437 | static int manager_attach_fds(Manager *m) { |
438 | _cleanup_strv_free_ char **fdnames = NULL; | |
2720b6f2 | 439 | int n; |
aed24c4c | 440 | |
efc19ee4 LP |
441 | /* Upon restart, PID1 will send us back all fds of session devices that we previously opened. Each |
442 | * file descriptor is associated with a given session. The session ids are passed through FDNAMES. */ | |
aed24c4c | 443 | |
a8d5378a MY |
444 | assert(m); |
445 | ||
aed24c4c | 446 | n = sd_listen_fds_with_names(true, &fdnames); |
efc19ee4 LP |
447 | if (n < 0) |
448 | return log_warning_errno(n, "Failed to acquire passed fd list: %m"); | |
449 | if (n == 0) | |
450 | return 0; | |
aed24c4c | 451 | |
efc19ee4 LP |
452 | for (int i = 0; i < n; i++) { |
453 | int fd = SD_LISTEN_FDS_START + i; | |
aed24c4c | 454 | |
efc19ee4 | 455 | if (deliver_fd(m, fdnames[i], fd) >= 0) |
51ead3e3 | 456 | continue; |
aed24c4c | 457 | |
2720b6f2 YW |
458 | /* Hmm, we couldn't deliver the fd to any session device object? If so, let's close the fd |
459 | * and remove it from fdstore. */ | |
460 | close_and_notify_warn(fd, fdnames[i]); | |
aed24c4c FB |
461 | } |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
9588bc32 | 466 | static int manager_enumerate_sessions(Manager *m) { |
9444b1f2 | 467 | _cleanup_closedir_ DIR *d = NULL; |
aed24c4c | 468 | int r = 0, k; |
20263082 | 469 | |
9444b1f2 LP |
470 | assert(m); |
471 | ||
472 | /* Read in session data stored on disk */ | |
473 | d = opendir("/run/systemd/sessions"); | |
474 | if (!d) { | |
475 | if (errno == ENOENT) | |
476 | return 0; | |
477 | ||
e1427b13 | 478 | return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m"); |
9444b1f2 LP |
479 | } |
480 | ||
481 | FOREACH_DIRENT(de, d, return -errno) { | |
482 | struct Session *s; | |
20263082 | 483 | |
9444b1f2 | 484 | if (!dirent_is_file(de)) |
14c3baca LP |
485 | continue; |
486 | ||
9444b1f2 | 487 | k = manager_add_session(m, de->d_name, &s); |
20263082 | 488 | if (k < 0) { |
20fff3de | 489 | r = log_warning_errno(k, "Failed to add session by file name %s, ignoring: %m", de->d_name); |
20263082 LP |
490 | continue; |
491 | } | |
492 | ||
9444b1f2 | 493 | session_add_to_gc_queue(s); |
20263082 | 494 | |
9444b1f2 | 495 | k = session_load(s); |
20263082 LP |
496 | if (k < 0) |
497 | r = k; | |
498 | } | |
499 | ||
efc19ee4 LP |
500 | /* We might be restarted and PID1 could have sent us back the session device fds we previously |
501 | * saved. */ | |
502 | (void) manager_attach_fds(m); | |
aed24c4c | 503 | |
20263082 LP |
504 | return r; |
505 | } | |
506 | ||
9588bc32 | 507 | static int manager_enumerate_inhibitors(Manager *m) { |
9444b1f2 | 508 | _cleanup_closedir_ DIR *d = NULL; |
20263082 LP |
509 | int r = 0; |
510 | ||
511 | assert(m); | |
512 | ||
9444b1f2 | 513 | d = opendir("/run/systemd/inhibit"); |
20263082 LP |
514 | if (!d) { |
515 | if (errno == ENOENT) | |
516 | return 0; | |
517 | ||
e1427b13 | 518 | return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m"); |
20263082 LP |
519 | } |
520 | ||
9444b1f2 | 521 | FOREACH_DIRENT(de, d, return -errno) { |
20263082 | 522 | int k; |
9444b1f2 | 523 | Inhibitor *i; |
20263082 LP |
524 | |
525 | if (!dirent_is_file(de)) | |
526 | continue; | |
527 | ||
9444b1f2 LP |
528 | k = manager_add_inhibitor(m, de->d_name, &i); |
529 | if (k < 0) { | |
20fff3de | 530 | r = log_warning_errno(k, "Couldn't add inhibitor %s, ignoring: %m", de->d_name); |
20263082 LP |
531 | continue; |
532 | } | |
533 | ||
9444b1f2 | 534 | k = inhibitor_load(i); |
20263082 LP |
535 | if (k < 0) |
536 | r = k; | |
537 | } | |
538 | ||
20263082 LP |
539 | return r; |
540 | } | |
541 | ||
eb968396 | 542 | static int manager_dispatch_seat_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
99534007 | 543 | Manager *m = ASSERT_PTR(userdata); |
20263082 | 544 | |
eb968396 | 545 | assert(device); |
20263082 | 546 | |
eb968396 | 547 | manager_process_seat_device(m, device); |
7b77ed8c | 548 | return 0; |
30ed21ce LP |
549 | } |
550 | ||
eb968396 | 551 | static int manager_dispatch_device_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
99534007 | 552 | Manager *m = ASSERT_PTR(userdata); |
718d006a | 553 | |
eb968396 | 554 | assert(device); |
718d006a | 555 | |
eb968396 | 556 | manager_process_seat_device(m, device); |
7b77ed8c | 557 | return 0; |
718d006a DH |
558 | } |
559 | ||
eb968396 | 560 | static int manager_dispatch_vcsa_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
99534007 | 561 | Manager *m = ASSERT_PTR(userdata); |
91bd2c34 | 562 | const char *name; |
30ed21ce | 563 | |
eb968396 | 564 | assert(device); |
30ed21ce LP |
565 | |
566 | /* Whenever a VCSA device is removed try to reallocate our | |
567 | * VTs, to make sure our auto VTs never go away. */ | |
568 | ||
eb968396 | 569 | if (sd_device_get_sysname(device, &name) >= 0 && |
4f209af7 | 570 | startswith(name, "vcsa") && |
a1130022 | 571 | device_for_action(device, SD_DEVICE_REMOVE)) |
7b77ed8c | 572 | seat_preallocate_vts(m->seat0); |
30ed21ce | 573 | |
7b77ed8c | 574 | return 0; |
20263082 LP |
575 | } |
576 | ||
eb968396 | 577 | static int manager_dispatch_button_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
99534007 | 578 | Manager *m = ASSERT_PTR(userdata); |
069cfc85 | 579 | |
eb968396 | 580 | assert(device); |
069cfc85 | 581 | |
eb968396 | 582 | manager_process_button_device(m, device); |
7b77ed8c | 583 | return 0; |
069cfc85 LP |
584 | } |
585 | ||
cc377381 | 586 | static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
99534007 | 587 | Manager *m = ASSERT_PTR(userdata); |
cc377381 | 588 | |
92432fcc | 589 | assert(m->seat0); |
cc377381 | 590 | assert(m->console_active_fd == fd); |
20263082 | 591 | |
92432fcc | 592 | seat_read_active_vt(m->seat0); |
20263082 LP |
593 | return 0; |
594 | } | |
595 | ||
98a77df5 LP |
596 | static int manager_reserve_vt(Manager *m) { |
597 | _cleanup_free_ char *p = NULL; | |
598 | ||
599 | assert(m); | |
600 | ||
601 | if (m->reserve_vt <= 0) | |
602 | return 0; | |
603 | ||
604 | if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0) | |
605 | return log_oom(); | |
606 | ||
607 | m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK); | |
608 | if (m->reserve_vt_fd < 0) { | |
d4d882e5 LP |
609 | |
610 | /* Don't complain on VT-less systems */ | |
611 | if (errno != ENOENT) | |
56f64d95 | 612 | log_warning_errno(errno, "Failed to pin reserved VT: %m"); |
98a77df5 LP |
613 | return -errno; |
614 | } | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
cc377381 | 619 | static int manager_connect_bus(Manager *m) { |
cc377381 | 620 | int r; |
31b79c2b | 621 | |
cc377381 LP |
622 | assert(m); |
623 | assert(!m->bus); | |
31b79c2b | 624 | |
76b54375 | 625 | r = sd_bus_default_system(&m->bus); |
f647962d MS |
626 | if (r < 0) |
627 | return log_error_errno(r, "Failed to connect to system bus: %m"); | |
31b79c2b | 628 | |
c2b178d3 | 629 | r = bus_add_implementation(m->bus, &manager_object, m); |
f647962d | 630 | if (r < 0) |
c2b178d3 | 631 | return r; |
20263082 | 632 | |
c2b178d3 | 633 | r = bus_log_control_api_register(m->bus); |
f647962d | 634 | if (r < 0) |
c2b178d3 | 635 | return r; |
20263082 | 636 | |
5d990cc5 | 637 | r = bus_match_signal_async(m->bus, NULL, bus_systemd_mgr, "JobRemoved", match_job_removed, NULL, m); |
f647962d | 638 | if (r < 0) |
75152a4d LP |
639 | return log_error_errno(r, "Failed to request match for JobRemoved: %m"); |
640 | ||
5d990cc5 | 641 | r = bus_match_signal_async(m->bus, NULL, bus_systemd_mgr, "UnitRemoved", match_unit_removed, NULL, m); |
f647962d | 642 | if (r < 0) |
75152a4d LP |
643 | return log_error_errno(r, "Failed to request match for UnitRemoved: %m"); |
644 | ||
645 | r = sd_bus_match_signal_async( | |
646 | m->bus, | |
647 | NULL, | |
648 | "org.freedesktop.systemd1", | |
649 | NULL, | |
650 | "org.freedesktop.DBus.Properties", | |
651 | "PropertiesChanged", | |
652 | match_properties_changed, NULL, m); | |
f647962d | 653 | if (r < 0) |
75152a4d LP |
654 | return log_error_errno(r, "Failed to request match for PropertiesChanged: %m"); |
655 | ||
5d990cc5 | 656 | r = bus_match_signal_async(m->bus, NULL, bus_systemd_mgr, "Reloading", match_reloading, NULL, m); |
f647962d | 657 | if (r < 0) |
75152a4d | 658 | return log_error_errno(r, "Failed to request match for Reloading: %m"); |
6797c324 | 659 | |
5d990cc5 | 660 | r = bus_call_method_async(m->bus, NULL, bus_systemd_mgr, "Subscribe", NULL, NULL, NULL); |
31b2cd5d LP |
661 | if (r < 0) |
662 | return log_error_errno(r, "Failed to enable subscription: %m"); | |
20263082 | 663 | |
0c0b9306 | 664 | r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.login1", 0, NULL, NULL); |
f647962d | 665 | if (r < 0) |
0c0b9306 | 666 | return log_error_errno(r, "Failed to request name: %m"); |
bafd4449 | 667 | |
e11544a8 | 668 | r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL); |
f647962d MS |
669 | if (r < 0) |
670 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); | |
20263082 | 671 | |
20263082 | 672 | return 0; |
20263082 LP |
673 | } |
674 | ||
92683ad2 | 675 | static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) { |
a8d5378a | 676 | Manager *m = ASSERT_PTR(data); |
03677889 | 677 | Session *active; |
92683ad2 DH |
678 | |
679 | /* | |
680 | * We got a VT-switch signal and we have to acknowledge it immediately. | |
681 | * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately, | |
682 | * old user-space might run multiple sessions on a single VT, *sigh*. | |
683 | * Therefore, we have to iterate all sessions and find one with a vtfd | |
684 | * on the requested VT. | |
685 | * As only VTs with active controllers have VT_PROCESS set, our current | |
686 | * notion of the active VT might be wrong (for instance if the switch | |
687 | * happens while we setup VT_PROCESS). Therefore, read the current VT | |
688 | * first and then use s->active->vtnr as reference. Note that this is | |
689 | * not racy, as no further VT-switch can happen as long as we're in | |
690 | * synchronous VT_PROCESS mode. | |
691 | */ | |
692 | ||
693 | assert(m->seat0); | |
36f9fadf | 694 | |
92683ad2 DH |
695 | seat_read_active_vt(m->seat0); |
696 | ||
697 | active = m->seat0->active; | |
698 | if (!active || active->vtnr < 1) { | |
254d1313 | 699 | _cleanup_close_ int fd = -EBADF; |
adb8688b FB |
700 | int r; |
701 | ||
702 | /* We are requested to acknowledge the VT-switch signal by the kernel but | |
703 | * there's no registered sessions for the current VT. Normally this | |
704 | * shouldn't happen but something wrong might have happened when we tried | |
705 | * to release the VT. Better be safe than sorry, and try to release the VT | |
706 | * one more time otherwise the user will be locked with the current VT. */ | |
707 | ||
708 | log_warning("Received VT_PROCESS signal without a registered session, restoring VT."); | |
709 | ||
36f9fadf | 710 | /* At this point we only have the kernel mapping for referring to the current VT. */ |
adb8688b FB |
711 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK); |
712 | if (fd < 0) { | |
36f9fadf | 713 | log_warning_errno(fd, "Failed to open current VT, ignoring: %m"); |
adb8688b FB |
714 | return 0; |
715 | } | |
716 | ||
36f9fadf | 717 | r = vt_release(fd, /* restore = */ true); |
adb8688b | 718 | if (r < 0) |
36f9fadf | 719 | log_warning_errno(r, "Failed to release current VT, ignoring: %m"); |
adb8688b | 720 | |
92683ad2 DH |
721 | return 0; |
722 | } | |
723 | ||
03677889 | 724 | if (active->vtfd >= 0) |
2ec3ff66 | 725 | session_leave_vt(active); |
03677889 YW |
726 | else |
727 | LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) | |
92683ad2 | 728 | if (iter->vtnr == active->vtnr && iter->vtfd >= 0) { |
2ec3ff66 | 729 | session_leave_vt(iter); |
92683ad2 DH |
730 | break; |
731 | } | |
92683ad2 DH |
732 | |
733 | return 0; | |
734 | } | |
735 | ||
20263082 | 736 | static int manager_connect_console(Manager *m) { |
cc377381 | 737 | int r; |
20263082 LP |
738 | |
739 | assert(m); | |
740 | assert(m->console_active_fd < 0); | |
741 | ||
0b6d55ca LP |
742 | /* On certain systems (such as S390, Xen, and containers) /dev/tty0 does not exist (as there is no VC), so |
743 | * don't fail if we can't open it. */ | |
744 | ||
cc377381 | 745 | if (access("/dev/tty0", F_OK) < 0) |
74afee9c | 746 | return 0; |
74afee9c | 747 | |
20263082 LP |
748 | m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC); |
749 | if (m->console_active_fd < 0) { | |
cdc564d2 | 750 | |
0b6d55ca LP |
751 | /* On some systems /dev/tty0 may exist even though /sys/class/tty/tty0 does not. These are broken, but |
752 | * common. Let's complain but continue anyway. */ | |
753 | if (errno == ENOENT) { | |
754 | log_warning_errno(errno, "System has /dev/tty0 but not /sys/class/tty/tty0/active which is broken, ignoring: %m"); | |
cdc564d2 | 755 | return 0; |
0b6d55ca | 756 | } |
cdc564d2 | 757 | |
e1427b13 | 758 | return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m"); |
20263082 LP |
759 | } |
760 | ||
151b9b96 | 761 | r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m); |
0b6d55ca LP |
762 | if (r < 0) |
763 | return log_error_errno(r, "Failed to watch foreground console: %m"); | |
20263082 | 764 | |
92683ad2 DH |
765 | /* |
766 | * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used | |
767 | * as VT-acquire signal. We ignore any acquire-events (yes, we still | |
768 | * have to provide a valid signal-number for it!) and acknowledge all | |
769 | * release events immediately. | |
770 | */ | |
771 | ||
baaa35ad ZJS |
772 | if (SIGRTMIN + 1 > SIGRTMAX) |
773 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
c0f86d66 | 774 | "Not enough real-time signals available: %i-%i", |
baaa35ad | 775 | SIGRTMIN, SIGRTMAX); |
92683ad2 | 776 | |
9c274488 | 777 | assert_se(ignore_signals(SIGRTMIN + 1) >= 0); |
72c0a2c2 | 778 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0); |
92683ad2 DH |
779 | |
780 | r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m); | |
781 | if (r < 0) | |
0b6d55ca | 782 | return log_error_errno(r, "Failed to subscribe to signal: %m"); |
92683ad2 | 783 | |
20263082 LP |
784 | return 0; |
785 | } | |
786 | ||
787 | static int manager_connect_udev(Manager *m) { | |
14c3baca | 788 | int r; |
20263082 LP |
789 | |
790 | assert(m); | |
eb968396 YW |
791 | assert(!m->device_seat_monitor); |
792 | assert(!m->device_monitor); | |
793 | assert(!m->device_vcsa_monitor); | |
794 | assert(!m->device_button_monitor); | |
20263082 | 795 | |
eb968396 YW |
796 | r = sd_device_monitor_new(&m->device_seat_monitor); |
797 | if (r < 0) | |
798 | return r; | |
20263082 | 799 | |
eb968396 | 800 | r = sd_device_monitor_filter_add_match_tag(m->device_seat_monitor, "master-of-seat"); |
14c3baca LP |
801 | if (r < 0) |
802 | return r; | |
20263082 | 803 | |
deb2b734 | 804 | r = sd_device_monitor_attach_event(m->device_seat_monitor, m->event); |
14c3baca LP |
805 | if (r < 0) |
806 | return r; | |
20263082 | 807 | |
deb2b734 | 808 | r = sd_device_monitor_start(m->device_seat_monitor, manager_dispatch_seat_udev, m); |
cc377381 LP |
809 | if (r < 0) |
810 | return r; | |
069cfc85 | 811 | |
17bf3c55 | 812 | (void) sd_device_monitor_set_description(m->device_seat_monitor, "seat"); |
deb2b734 | 813 | |
eb968396 YW |
814 | r = sd_device_monitor_new(&m->device_monitor); |
815 | if (r < 0) | |
816 | return r; | |
718d006a | 817 | |
eb968396 | 818 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "input", NULL); |
718d006a DH |
819 | if (r < 0) |
820 | return r; | |
821 | ||
eb968396 | 822 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "graphics", NULL); |
718d006a DH |
823 | if (r < 0) |
824 | return r; | |
825 | ||
eb968396 | 826 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "drm", NULL); |
718d006a DH |
827 | if (r < 0) |
828 | return r; | |
829 | ||
deb2b734 | 830 | r = sd_device_monitor_attach_event(m->device_monitor, m->event); |
718d006a DH |
831 | if (r < 0) |
832 | return r; | |
833 | ||
deb2b734 | 834 | r = sd_device_monitor_start(m->device_monitor, manager_dispatch_device_udev, m); |
cc377381 LP |
835 | if (r < 0) |
836 | return r; | |
718d006a | 837 | |
17bf3c55 | 838 | (void) sd_device_monitor_set_description(m->device_monitor, "input,graphics,drm"); |
deb2b734 | 839 | |
6de0e0e5 | 840 | /* Don't watch keys if nobody cares */ |
e25937a3 | 841 | if (!manager_all_buttons_ignored(m)) { |
eb968396 YW |
842 | r = sd_device_monitor_new(&m->device_button_monitor); |
843 | if (r < 0) | |
844 | return r; | |
069cfc85 | 845 | |
eb968396 | 846 | r = sd_device_monitor_filter_add_match_tag(m->device_button_monitor, "power-switch"); |
6de0e0e5 LP |
847 | if (r < 0) |
848 | return r; | |
069cfc85 | 849 | |
eb968396 | 850 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_button_monitor, "input", NULL); |
6de0e0e5 LP |
851 | if (r < 0) |
852 | return r; | |
069cfc85 | 853 | |
deb2b734 | 854 | r = sd_device_monitor_attach_event(m->device_button_monitor, m->event); |
6de0e0e5 LP |
855 | if (r < 0) |
856 | return r; | |
069cfc85 | 857 | |
deb2b734 | 858 | r = sd_device_monitor_start(m->device_button_monitor, manager_dispatch_button_udev, m); |
cc377381 LP |
859 | if (r < 0) |
860 | return r; | |
deb2b734 | 861 | |
17bf3c55 | 862 | (void) sd_device_monitor_set_description(m->device_button_monitor, "button"); |
6de0e0e5 | 863 | } |
069cfc85 | 864 | |
976c088a | 865 | /* Don't bother watching VCSA devices, if nobody cares */ |
6de0e0e5 | 866 | if (m->n_autovts > 0 && m->console_active_fd >= 0) { |
30ed21ce | 867 | |
eb968396 YW |
868 | r = sd_device_monitor_new(&m->device_vcsa_monitor); |
869 | if (r < 0) | |
870 | return r; | |
30ed21ce | 871 | |
eb968396 | 872 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_vcsa_monitor, "vc", NULL); |
6de0e0e5 LP |
873 | if (r < 0) |
874 | return r; | |
30ed21ce | 875 | |
deb2b734 | 876 | r = sd_device_monitor_attach_event(m->device_vcsa_monitor, m->event); |
6de0e0e5 LP |
877 | if (r < 0) |
878 | return r; | |
30ed21ce | 879 | |
deb2b734 | 880 | r = sd_device_monitor_start(m->device_vcsa_monitor, manager_dispatch_vcsa_udev, m); |
cc377381 LP |
881 | if (r < 0) |
882 | return r; | |
deb2b734 | 883 | |
17bf3c55 | 884 | (void) sd_device_monitor_set_description(m->device_vcsa_monitor, "vcsa"); |
6de0e0e5 | 885 | } |
20263082 LP |
886 | |
887 | return 0; | |
888 | } | |
889 | ||
905f0a39 | 890 | static void manager_gc(Manager *m, bool drop_not_started) { |
14c3baca LP |
891 | Seat *seat; |
892 | Session *session; | |
893 | User *user; | |
894 | ||
895 | assert(m); | |
896 | ||
52e3671b | 897 | while ((seat = LIST_POP(gc_queue, m->seat_gc_queue))) { |
14c3baca LP |
898 | seat->in_gc_queue = false; |
899 | ||
5c093a23 | 900 | if (seat_may_gc(seat, drop_not_started)) { |
bda62573 | 901 | seat_stop(seat, /* force = */ false); |
14c3baca LP |
902 | seat_free(seat); |
903 | } | |
904 | } | |
905 | ||
52e3671b | 906 | while ((session = LIST_POP(gc_queue, m->session_gc_queue))) { |
14c3baca LP |
907 | session->in_gc_queue = false; |
908 | ||
6c75e317 | 909 | /* First, if we are not closing yet, initiate stopping. */ |
5c093a23 | 910 | if (session_may_gc(session, drop_not_started) && |
5f41d1f1 | 911 | session_get_state(session) != SESSION_CLOSING) |
bda62573 | 912 | (void) session_stop(session, /* force = */ false); |
5f41d1f1 | 913 | |
6c75e317 ZJS |
914 | /* Normally, this should make the session referenced again, if it doesn't then let's get rid |
915 | * of it immediately. */ | |
5c093a23 | 916 | if (session_may_gc(session, drop_not_started)) { |
75bbdf47 | 917 | (void) session_finalize(session); |
14c3baca LP |
918 | session_free(session); |
919 | } | |
920 | } | |
921 | ||
52e3671b | 922 | while ((user = LIST_POP(gc_queue, m->user_gc_queue))) { |
14c3baca LP |
923 | user->in_gc_queue = false; |
924 | ||
b58b227a | 925 | /* First step: queue stop jobs */ |
5c093a23 | 926 | if (user_may_gc(user, drop_not_started)) |
75bbdf47 | 927 | (void) user_stop(user, false); |
5f41d1f1 | 928 | |
b58b227a | 929 | /* Second step: finalize user */ |
5c093a23 | 930 | if (user_may_gc(user, drop_not_started)) { |
75bbdf47 | 931 | (void) user_finalize(user); |
14c3baca LP |
932 | user_free(user); |
933 | } | |
934 | } | |
935 | } | |
936 | ||
cc377381 | 937 | static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) { |
99534007 | 938 | Manager *m = ASSERT_PTR(userdata); |
23406ce5 | 939 | struct dual_timestamp since; |
cc377381 | 940 | usec_t n, elapse; |
23406ce5 | 941 | int r; |
23406ce5 | 942 | |
23406ce5 | 943 | if (m->idle_action == HANDLE_IGNORE || |
cc377381 LP |
944 | m->idle_action_usec <= 0) |
945 | return 0; | |
23406ce5 | 946 | |
23406ce5 LP |
947 | n = now(CLOCK_MONOTONIC); |
948 | ||
949 | r = manager_get_idle_hint(m, &since); | |
4e2cfb77 | 950 | if (r <= 0) { |
39ccc87c | 951 | /* Not idle. Let's check if after a timeout it might be idle then. */ |
cc377381 | 952 | elapse = n + m->idle_action_usec; |
4e2cfb77 MS |
953 | m->was_idle = false; |
954 | } else { | |
955 | ||
23406ce5 LP |
956 | /* Idle! Let's see if it's time to do something, or if |
957 | * we shall sleep for longer. */ | |
958 | ||
959 | if (n >= since.monotonic + m->idle_action_usec && | |
960 | (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) { | |
4e2cfb77 MS |
961 | bool is_edge = false; |
962 | ||
963 | /* We weren't idle previously or some activity happened while we were sleeping, and now we are | |
964 | * idle. Let's remember that for the next time and make this an edge transition. */ | |
965 | if (!m->was_idle || since.monotonic >= m->idle_action_not_before_usec) { | |
966 | is_edge = true; | |
967 | m->was_idle = true; | |
968 | } | |
969 | ||
970 | if (m->idle_action == HANDLE_LOCK && !is_edge) | |
971 | /* We are idle and we were before so we are actually not taking any action. */ | |
972 | log_debug("System idle."); | |
973 | else | |
974 | log_info("System idle. Will %s now.", handle_action_verb_to_string(m->idle_action)); | |
23406ce5 | 975 | |
4e2cfb77 | 976 | manager_handle_action(m, 0, m->idle_action, false, is_edge); |
23406ce5 LP |
977 | m->idle_action_not_before_usec = n; |
978 | } | |
979 | ||
cc377381 | 980 | elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec; |
23406ce5 LP |
981 | } |
982 | ||
cc377381 | 983 | if (!m->idle_action_event_source) { |
23406ce5 | 984 | |
6a0f1f6d LP |
985 | r = sd_event_add_time( |
986 | m->event, | |
987 | &m->idle_action_event_source, | |
988 | CLOCK_MONOTONIC, | |
989 | elapse, USEC_PER_SEC*30, | |
990 | manager_dispatch_idle_action, m); | |
f647962d MS |
991 | if (r < 0) |
992 | return log_error_errno(r, "Failed to add idle event source: %m"); | |
23406ce5 | 993 | |
718db961 | 994 | r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10); |
f647962d MS |
995 | if (r < 0) |
996 | return log_error_errno(r, "Failed to set idle event source priority: %m"); | |
cc377381 LP |
997 | } else { |
998 | r = sd_event_source_set_time(m->idle_action_event_source, elapse); | |
f647962d MS |
999 | if (r < 0) |
1000 | return log_error_errno(r, "Failed to set idle event timer: %m"); | |
23406ce5 | 1001 | |
cc377381 | 1002 | r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT); |
f647962d MS |
1003 | if (r < 0) |
1004 | return log_error_errno(r, "Failed to enable idle event timer: %m"); | |
23406ce5 LP |
1005 | } |
1006 | ||
1007 | return 0; | |
23406ce5 | 1008 | } |
cc377381 | 1009 | |
a2ed7077 ZJS |
1010 | static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { |
1011 | Manager *m = userdata; | |
1012 | int r; | |
1013 | ||
5d71e463 LP |
1014 | (void) sd_notifyf(/* unset= */ false, |
1015 | "RELOADING=1\n" | |
1016 | "STATUS=Reloading configuration...\n" | |
1017 | "MONOTONIC_USEC=" USEC_FMT, now(CLOCK_MONOTONIC)); | |
1018 | ||
a2ed7077 ZJS |
1019 | manager_reset_config(m); |
1020 | r = manager_parse_config_file(m); | |
1021 | if (r < 0) | |
1022 | log_warning_errno(r, "Failed to parse config file, using defaults: %m"); | |
1023 | else | |
1024 | log_info("Config file reloaded."); | |
1025 | ||
5d71e463 | 1026 | (void) sd_notify(/* unset= */ false, NOTIFY_READY); |
a2ed7077 ZJS |
1027 | return 0; |
1028 | } | |
1029 | ||
905f0a39 | 1030 | static int manager_startup(Manager *m) { |
20263082 | 1031 | int r; |
14c3baca LP |
1032 | Seat *seat; |
1033 | Session *session; | |
513cf7da | 1034 | User *user; |
ed4ba7e4 | 1035 | Button *button; |
f8e2fb7b | 1036 | Inhibitor *inhibitor; |
20263082 LP |
1037 | |
1038 | assert(m); | |
20263082 | 1039 | |
a2ed7077 ZJS |
1040 | r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m); |
1041 | if (r < 0) | |
1042 | return log_error_errno(r, "Failed to register SIGHUP handler: %m"); | |
1043 | ||
3d0ef5c7 LP |
1044 | /* Connect to utmp */ |
1045 | manager_connect_utmp(m); | |
1046 | ||
976c088a LP |
1047 | /* Connect to console */ |
1048 | r = manager_connect_console(m); | |
20263082 LP |
1049 | if (r < 0) |
1050 | return r; | |
1051 | ||
976c088a LP |
1052 | /* Connect to udev */ |
1053 | r = manager_connect_udev(m); | |
f647962d MS |
1054 | if (r < 0) |
1055 | return log_error_errno(r, "Failed to create udev watchers: %m"); | |
20263082 LP |
1056 | |
1057 | /* Connect to the bus */ | |
1058 | r = manager_connect_bus(m); | |
1059 | if (r < 0) | |
1060 | return r; | |
1061 | ||
14c3baca | 1062 | /* Instantiate magic seat 0 */ |
92432fcc | 1063 | r = manager_add_seat(m, "seat0", &m->seat0); |
f647962d MS |
1064 | if (r < 0) |
1065 | return log_error_errno(r, "Failed to add seat0: %m"); | |
14c3baca | 1066 | |
9d10cbee | 1067 | r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec); |
f9cd6be1 | 1068 | if (r < 0) |
da927ba9 | 1069 | log_warning_errno(r, "Failed to set up lid switch ignore event source: %m"); |
f9cd6be1 | 1070 | |
20263082 | 1071 | /* Deserialize state */ |
042f5988 ZJS |
1072 | r = manager_enumerate_devices(m); |
1073 | if (r < 0) | |
da927ba9 | 1074 | log_warning_errno(r, "Device enumeration failed: %m"); |
042f5988 ZJS |
1075 | |
1076 | r = manager_enumerate_seats(m); | |
1077 | if (r < 0) | |
da927ba9 | 1078 | log_warning_errno(r, "Seat enumeration failed: %m"); |
042f5988 ZJS |
1079 | |
1080 | r = manager_enumerate_users(m); | |
1081 | if (r < 0) | |
da927ba9 | 1082 | log_warning_errno(r, "User enumeration failed: %m"); |
042f5988 ZJS |
1083 | |
1084 | r = manager_enumerate_sessions(m); | |
1085 | if (r < 0) | |
da927ba9 | 1086 | log_warning_errno(r, "Session enumeration failed: %m"); |
042f5988 ZJS |
1087 | |
1088 | r = manager_enumerate_inhibitors(m); | |
1089 | if (r < 0) | |
da927ba9 | 1090 | log_warning_errno(r, "Inhibitor enumeration failed: %m"); |
042f5988 ZJS |
1091 | |
1092 | r = manager_enumerate_buttons(m); | |
1093 | if (r < 0) | |
da927ba9 | 1094 | log_warning_errno(r, "Button enumeration failed: %m"); |
20263082 | 1095 | |
aa6123e8 LN |
1096 | manager_load_scheduled_shutdown(m); |
1097 | ||
4a4b033f LP |
1098 | /* Remove stale objects before we start them */ |
1099 | manager_gc(m, false); | |
1100 | ||
98a77df5 LP |
1101 | /* Reserve the special reserved VT */ |
1102 | manager_reserve_vt(m); | |
1103 | ||
3d0ef5c7 LP |
1104 | /* Read in utmp if it exists */ |
1105 | manager_read_utmp(m); | |
1106 | ||
14c3baca | 1107 | /* And start everything */ |
90e74a66 | 1108 | HASHMAP_FOREACH(seat, m->seats) |
75bbdf47 | 1109 | (void) seat_start(seat); |
14c3baca | 1110 | |
513cf7da MS |
1111 | HASHMAP_FOREACH(user, m->users) |
1112 | (void) user_start(user); | |
1113 | ||
90e74a66 | 1114 | HASHMAP_FOREACH(session, m->sessions) |
25a1ab4e | 1115 | (void) session_start(session, NULL, NULL); |
20263082 | 1116 | |
90e74a66 | 1117 | HASHMAP_FOREACH(inhibitor, m->inhibitors) { |
11eae36d LP |
1118 | (void) inhibitor_start(inhibitor); |
1119 | ||
1120 | /* Let's see if the inhibitor is dead now, then remove it */ | |
1121 | if (inhibitor_is_orphan(inhibitor)) { | |
1122 | inhibitor_stop(inhibitor); | |
1123 | inhibitor_free(inhibitor); | |
1124 | } | |
1125 | } | |
f8e2fb7b | 1126 | |
90e74a66 | 1127 | HASHMAP_FOREACH(button, m->buttons) |
2d62c530 | 1128 | button_check_switches(button); |
ed4ba7e4 | 1129 | |
cc377381 | 1130 | manager_dispatch_idle_action(NULL, 0, m); |
23406ce5 | 1131 | |
20263082 LP |
1132 | return 0; |
1133 | } | |
1134 | ||
905f0a39 | 1135 | static int manager_run(Manager *m) { |
cc377381 LP |
1136 | int r; |
1137 | ||
20263082 LP |
1138 | assert(m); |
1139 | ||
1140 | for (;;) { | |
cc377381 LP |
1141 | r = sd_event_get_state(m->event); |
1142 | if (r < 0) | |
1143 | return r; | |
1144 | if (r == SD_EVENT_FINISHED) | |
1145 | return 0; | |
20263082 | 1146 | |
4a4b033f | 1147 | manager_gc(m, true); |
14c3baca | 1148 | |
418b22b8 DM |
1149 | r = manager_dispatch_delayed(m, false); |
1150 | if (r < 0) | |
1151 | return r; | |
1152 | if (r > 0) | |
1153 | continue; | |
1154 | ||
f5fbe71d | 1155 | r = sd_event_run(m->event, UINT64_MAX); |
cc377381 LP |
1156 | if (r < 0) |
1157 | return r; | |
20263082 | 1158 | } |
20263082 LP |
1159 | } |
1160 | ||
c11cfa28 | 1161 | static int run(int argc, char *argv[]) { |
5ce8ce90 | 1162 | _cleanup_(manager_freep) Manager *m = NULL; |
d7ac0952 | 1163 | _unused_ _cleanup_(notify_on_cleanup) const char *notify_message = NULL; |
5eda94dd | 1164 | int r; |
20263082 | 1165 | |
3eff4208 | 1166 | log_set_facility(LOG_AUTH); |
d2acb93d | 1167 | log_setup(); |
20263082 | 1168 | |
fc021a5b ZJS |
1169 | r = service_parse_argv("systemd-logind.service", |
1170 | "Manager for user logins and devices and privileged operations.", | |
d4cc0edf ZJS |
1171 | BUS_IMPLEMENTATIONS(&manager_object, |
1172 | &log_control_object), | |
fc021a5b ZJS |
1173 | argc, argv); |
1174 | if (r <= 0) | |
1175 | return r; | |
4c12626c | 1176 | |
fc021a5b | 1177 | umask(0022); |
20263082 | 1178 | |
a452c807 | 1179 | r = mac_init(); |
c11cfa28 | 1180 | if (r < 0) |
a9ba0e32 | 1181 | return r; |
4b51966c | 1182 | |
6c75e317 ZJS |
1183 | /* Always create the directories people can create inotify watches in. Note that some applications |
1184 | * might check for the existence of /run/systemd/seats/ to determine whether logind is available, so | |
1185 | * please always make sure these directories are created early on and unconditionally. */ | |
90b8a009 LP |
1186 | (void) mkdir_label("/run/systemd/seats", 0755); |
1187 | (void) mkdir_label("/run/systemd/users", 0755); | |
1188 | (void) mkdir_label("/run/systemd/sessions", 0755); | |
bb27ff66 | 1189 | |
92e1a209 | 1190 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGHUP, SIGTERM, SIGINT, SIGCHLD, SIGRTMIN+18, -1) >= 0); |
fcfa765d | 1191 | |
23462168 | 1192 | r = manager_new(&m); |
c11cfa28 ZJS |
1193 | if (r < 0) |
1194 | return log_error_errno(r, "Failed to allocate manager object: %m"); | |
20263082 | 1195 | |
23462168 | 1196 | (void) manager_parse_config_file(m); |
193197e8 | 1197 | |
20263082 | 1198 | r = manager_startup(m); |
c11cfa28 ZJS |
1199 | if (r < 0) |
1200 | return log_error_errno(r, "Failed to fully start up daemon: %m"); | |
20263082 | 1201 | |
21fe744c ZJS |
1202 | notify_message = notify_start(NOTIFY_READY, NOTIFY_STOPPING); |
1203 | return manager_run(m); | |
20263082 | 1204 | } |
c11cfa28 ZJS |
1205 | |
1206 | DEFINE_MAIN_FUNCTION(run); |