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Commit | Line | Data |
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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" |
9d5b6901 | 21 | #include "devnum-util.h" |
a0956174 | 22 | #include "dirent-util.h" |
f38e89c2 | 23 | #include "escape.h" |
3ffd4af2 | 24 | #include "fd-util.h" |
f97b34a6 | 25 | #include "format-util.h" |
af229d7a | 26 | #include "fs-util.h" |
6ecda0fb LP |
27 | #include "logind-dbus.h" |
28 | #include "logind-seat-dbus.h" | |
29 | #include "logind-session-dbus.h" | |
30 | #include "logind-user-dbus.h" | |
3ffd4af2 | 31 | #include "logind.h" |
5e332028 | 32 | #include "main-func.h" |
35cd0ba5 | 33 | #include "mkdir-label.h" |
1bef256c | 34 | #include "parse-util.h" |
dccca82b | 35 | #include "process-util.h" |
4b51966c | 36 | #include "selinux-util.h" |
fc021a5b | 37 | #include "service-util.h" |
24882e06 | 38 | #include "signal-util.h" |
07630cea | 39 | #include "strv.h" |
adb8688b | 40 | #include "terminal-util.h" |
91bd2c34 | 41 | #include "udev-util.h" |
ac4e03d4 | 42 | #include "user-util.h" |
20263082 | 43 | |
5ce8ce90 DT |
44 | static Manager* manager_free(Manager *m); |
45 | DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free); | |
905f0a39 | 46 | |
2d7cbead MY |
47 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(device_hash_ops, char, string_hash_func, string_compare_func, Device, device_free); |
48 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(seat_hash_ops, char, string_hash_func, string_compare_func, Seat, seat_free); | |
49 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(session_hash_ops, char, string_hash_func, string_compare_func, Session, session_free); | |
50 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(user_hash_ops, void, trivial_hash_func, trivial_compare_func, User, user_free); | |
51 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(inhibitor_hash_ops, char, string_hash_func, string_compare_func, Inhibitor, inhibitor_free); | |
52 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(button_hash_ops, char, string_hash_func, string_compare_func, Button, button_free); | |
53 | ||
23462168 | 54 | static int manager_new(Manager **ret) { |
5ce8ce90 | 55 | _cleanup_(manager_freep) Manager *m = NULL; |
a2ed7077 ZJS |
56 | int r; |
57 | ||
23462168 LP |
58 | assert(ret); |
59 | ||
b25ba6cf | 60 | m = new(Manager, 1); |
a2ed7077 | 61 | if (!m) |
23462168 | 62 | return -ENOMEM; |
a2ed7077 | 63 | |
b25ba6cf | 64 | *m = (Manager) { |
254d1313 ZJS |
65 | .console_active_fd = -EBADF, |
66 | .reserve_vt_fd = -EBADF, | |
cdf37062 | 67 | .enable_wall_messages = true, |
e83b8b6b | 68 | .idle_action_not_before_usec = now(CLOCK_MONOTONIC), |
c794877f | 69 | .scheduled_shutdown_action = _HANDLE_ACTION_INVALID, |
a2ed7077 | 70 | |
181c525e MY |
71 | .devices = hashmap_new(&device_hash_ops), |
72 | .seats = hashmap_new(&seat_hash_ops), | |
73 | .sessions = hashmap_new(&session_hash_ops), | |
74 | .users = hashmap_new(&user_hash_ops), | |
75 | .inhibitors = hashmap_new(&inhibitor_hash_ops), | |
76 | .buttons = hashmap_new(&button_hash_ops), | |
f8e2fb7b | 77 | |
181c525e MY |
78 | .user_units = hashmap_new(&string_hash_ops), |
79 | .session_units = hashmap_new(&string_hash_ops), | |
80 | }; | |
8c8c4351 | 81 | |
8494f562 | 82 | if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units) |
23462168 | 83 | return -ENOMEM; |
25d93491 | 84 | |
afc6adb5 | 85 | r = sd_event_default(&m->event); |
ed4ba7e4 | 86 | if (r < 0) |
23462168 | 87 | return r; |
cc377381 | 88 | |
fcfa765d LP |
89 | r = sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL); |
90 | if (r < 0) | |
91 | return r; | |
92 | ||
93 | r = sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL); | |
94 | if (r < 0) | |
95 | return r; | |
96 | ||
92e1a209 LP |
97 | r = sd_event_add_signal(m->event, NULL, SIGRTMIN+18, sigrtmin18_handler, NULL); |
98 | if (r < 0) | |
99 | return r; | |
100 | ||
101 | r = sd_event_add_memory_pressure(m->event, NULL, NULL, NULL); | |
102 | if (r < 0) | |
103 | log_debug_errno(r, "Failed allocate memory pressure event source, ignoring: %m"); | |
104 | ||
23462168 | 105 | (void) sd_event_set_watchdog(m->event, true); |
cde93897 | 106 | |
a2ed7077 ZJS |
107 | manager_reset_config(m); |
108 | ||
23462168 LP |
109 | *ret = TAKE_PTR(m); |
110 | return 0; | |
20263082 LP |
111 | } |
112 | ||
5ce8ce90 | 113 | static Manager* manager_free(Manager *m) { |
84a4e660 | 114 | if (!m) |
23462168 | 115 | return NULL; |
20263082 | 116 | |
20263082 LP |
117 | hashmap_free(m->devices); |
118 | hashmap_free(m->seats); | |
f8e2fb7b | 119 | hashmap_free(m->sessions); |
8494f562 MY |
120 | |
121 | /* All records should have been removed by session_free */ | |
122 | assert(hashmap_isempty(m->sessions_by_leader)); | |
238794b1 | 123 | hashmap_free(m->sessions_by_leader); |
8494f562 | 124 | |
f8e2fb7b LP |
125 | hashmap_free(m->users); |
126 | hashmap_free(m->inhibitors); | |
069cfc85 | 127 | hashmap_free(m->buttons); |
2a66c2a1 | 128 | hashmap_free(m->brightness_writers); |
f8e2fb7b | 129 | |
fb6becb4 LP |
130 | hashmap_free(m->user_units); |
131 | hashmap_free(m->session_units); | |
8c8c4351 | 132 | |
cc377381 | 133 | sd_event_source_unref(m->idle_action_event_source); |
c0f32805 | 134 | sd_event_source_unref(m->inhibit_timeout_source); |
8aaa023a | 135 | sd_event_source_unref(m->scheduled_shutdown_timeout_source); |
867c37f6 | 136 | sd_event_source_unref(m->nologin_timeout_source); |
e2fa5721 | 137 | sd_event_source_unref(m->wall_message_timeout_source); |
cc377381 LP |
138 | |
139 | sd_event_source_unref(m->console_active_event_source); | |
f9cd6be1 | 140 | sd_event_source_unref(m->lid_switch_ignore_event_source); |
20263082 | 141 | |
a520bb66 YA |
142 | sd_event_source_unref(m->reboot_key_long_press_event_source); |
143 | ||
3d0ef5c7 LP |
144 | #if ENABLE_UTMP |
145 | sd_event_source_unref(m->utmp_event_source); | |
146 | #endif | |
147 | ||
03e334a1 | 148 | safe_close(m->console_active_fd); |
20263082 | 149 | |
eb968396 YW |
150 | sd_device_monitor_unref(m->device_seat_monitor); |
151 | sd_device_monitor_unref(m->device_monitor); | |
152 | sd_device_monitor_unref(m->device_vcsa_monitor); | |
153 | sd_device_monitor_unref(m->device_button_monitor); | |
3e044c49 | 154 | |
867c37f6 | 155 | if (m->unlink_nologin) |
af229d7a | 156 | (void) unlink_or_warn("/run/nologin"); |
867c37f6 | 157 | |
2a1ffd3e | 158 | hashmap_free(m->polkit_registry); |
20263082 | 159 | |
92e31da1 | 160 | sd_bus_flush_close_unref(m->bus); |
cc377381 | 161 | sd_event_unref(m->event); |
20263082 | 162 | |
03e334a1 | 163 | safe_close(m->reserve_vt_fd); |
98a77df5 | 164 | |
193197e8 LP |
165 | strv_free(m->kill_only_users); |
166 | strv_free(m->kill_exclude_users); | |
167 | ||
e2fa5721 DM |
168 | free(m->scheduled_shutdown_tty); |
169 | free(m->wall_message); | |
af9792ac | 170 | free(m->action_job); |
23462168 | 171 | |
d4bd786d | 172 | strv_free(m->efi_boot_loader_entries); |
af2697e8 | 173 | free(m->efi_loader_entry_one_shot); |
d4bd786d | 174 | |
23462168 | 175 | return mfree(m); |
20263082 LP |
176 | } |
177 | ||
9588bc32 | 178 | static int manager_enumerate_devices(Manager *m) { |
4f209af7 | 179 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; |
14c3baca | 180 | int r; |
20263082 LP |
181 | |
182 | assert(m); | |
183 | ||
184 | /* Loads devices from udev and creates seats for them as | |
185 | * necessary */ | |
186 | ||
4f209af7 | 187 | r = sd_device_enumerator_new(&e); |
14c3baca | 188 | if (r < 0) |
bf5332d2 | 189 | return r; |
20263082 | 190 | |
4f209af7 | 191 | r = sd_device_enumerator_add_match_tag(e, "master-of-seat"); |
e1202047 LP |
192 | if (r < 0) |
193 | return r; | |
194 | ||
af1a6c97 | 195 | r = 0; |
20263082 | 196 | |
af1a6c97 MY |
197 | FOREACH_DEVICE(e, d) |
198 | RET_GATHER(r, manager_process_seat_device(m, d)); | |
20263082 | 199 | |
20263082 LP |
200 | return r; |
201 | } | |
202 | ||
9588bc32 | 203 | static int manager_enumerate_buttons(Manager *m) { |
4f209af7 | 204 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; |
069cfc85 LP |
205 | int r; |
206 | ||
207 | assert(m); | |
208 | ||
209 | /* Loads buttons from udev */ | |
210 | ||
e25937a3 | 211 | if (manager_all_buttons_ignored(m)) |
6de0e0e5 LP |
212 | return 0; |
213 | ||
4f209af7 | 214 | r = sd_device_enumerator_new(&e); |
069cfc85 | 215 | if (r < 0) |
bf5332d2 | 216 | return r; |
069cfc85 | 217 | |
4f209af7 | 218 | r = sd_device_enumerator_add_match_subsystem(e, "input", true); |
069cfc85 | 219 | if (r < 0) |
bf5332d2 | 220 | return r; |
069cfc85 | 221 | |
4f209af7 | 222 | r = sd_device_enumerator_add_match_tag(e, "power-switch"); |
e1202047 LP |
223 | if (r < 0) |
224 | return r; | |
225 | ||
af1a6c97 | 226 | r = 0; |
069cfc85 | 227 | |
af1a6c97 MY |
228 | FOREACH_DEVICE(e, d) |
229 | RET_GATHER(r, manager_process_button_device(m, d)); | |
069cfc85 | 230 | |
069cfc85 LP |
231 | return r; |
232 | } | |
233 | ||
9588bc32 | 234 | static int manager_enumerate_seats(Manager *m) { |
9444b1f2 | 235 | _cleanup_closedir_ DIR *d = NULL; |
20263082 LP |
236 | int r = 0; |
237 | ||
238 | assert(m); | |
239 | ||
240 | /* This loads data about seats stored on disk, but does not | |
241 | * actually create any seats. Removes data of seats that no | |
242 | * longer exist. */ | |
243 | ||
244 | d = opendir("/run/systemd/seats"); | |
245 | if (!d) { | |
246 | if (errno == ENOENT) | |
247 | return 0; | |
248 | ||
af1a6c97 | 249 | return log_error_errno(errno, "Failed to open /run/systemd/seats/: %m"); |
20263082 LP |
250 | } |
251 | ||
9444b1f2 | 252 | FOREACH_DIRENT(de, d, return -errno) { |
20263082 | 253 | Seat *s; |
20263082 LP |
254 | |
255 | if (!dirent_is_file(de)) | |
256 | continue; | |
257 | ||
258 | s = hashmap_get(m->seats, de->d_name); | |
259 | if (!s) { | |
cb51ee7a | 260 | if (unlinkat(dirfd(d), de->d_name, 0) < 0) |
19cdcd5d | 261 | log_warning_errno(errno, "Failed to remove /run/systemd/seats/%s, ignoring: %m", |
111a3aae | 262 | de->d_name); |
20263082 LP |
263 | continue; |
264 | } | |
265 | ||
af1a6c97 | 266 | RET_GATHER(r, seat_load(s)); |
20263082 LP |
267 | } |
268 | ||
14c3baca LP |
269 | return r; |
270 | } | |
20263082 | 271 | |
14c3baca | 272 | static int manager_enumerate_linger_users(Manager *m) { |
9444b1f2 | 273 | _cleanup_closedir_ DIR *d = NULL; |
14c3baca LP |
274 | int r = 0; |
275 | ||
9444b1f2 LP |
276 | assert(m); |
277 | ||
14c3baca LP |
278 | d = opendir("/var/lib/systemd/linger"); |
279 | if (!d) { | |
280 | if (errno == ENOENT) | |
281 | return 0; | |
282 | ||
e1427b13 | 283 | return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m"); |
14c3baca LP |
284 | } |
285 | ||
9444b1f2 | 286 | FOREACH_DIRENT(de, d, return -errno) { |
f38e89c2 | 287 | _cleanup_free_ char *n = NULL; |
af1a6c97 | 288 | int k; |
14c3baca LP |
289 | |
290 | if (!dirent_is_file(de)) | |
20263082 | 291 | continue; |
af1a6c97 | 292 | |
f38e89c2 MK |
293 | k = cunescape(de->d_name, 0, &n); |
294 | if (k < 0) { | |
af1a6c97 | 295 | RET_GATHER(r, log_warning_errno(k, "Failed to unescape username '%s', ignoring: %m", de->d_name)); |
f38e89c2 MK |
296 | continue; |
297 | } | |
af1a6c97 | 298 | |
f38e89c2 | 299 | k = manager_add_user_by_name(m, n, NULL); |
20fff3de | 300 | if (k < 0) |
af1a6c97 | 301 | RET_GATHER(r, log_warning_errno(k, "Couldn't add lingering user %s, ignoring: %m", de->d_name)); |
20263082 LP |
302 | } |
303 | ||
20263082 LP |
304 | return r; |
305 | } | |
306 | ||
9588bc32 | 307 | static int manager_enumerate_users(Manager *m) { |
9444b1f2 | 308 | _cleanup_closedir_ DIR *d = NULL; |
af1a6c97 | 309 | int r; |
20263082 LP |
310 | |
311 | assert(m); | |
312 | ||
9444b1f2 | 313 | /* Add lingering users */ |
b3629c7d | 314 | r = manager_enumerate_linger_users(m); |
14c3baca | 315 | |
9444b1f2 | 316 | /* Read in user data stored on disk */ |
20263082 LP |
317 | d = opendir("/run/systemd/users"); |
318 | if (!d) { | |
319 | if (errno == ENOENT) | |
320 | return 0; | |
321 | ||
af1a6c97 | 322 | return log_error_errno(errno, "Failed to open /run/systemd/users/: %m"); |
20263082 LP |
323 | } |
324 | ||
9444b1f2 | 325 | FOREACH_DIRENT(de, d, return -errno) { |
20263082 | 326 | User *u; |
ac4e03d4 | 327 | uid_t uid; |
af1a6c97 | 328 | int k; |
20263082 LP |
329 | |
330 | if (!dirent_is_file(de)) | |
331 | continue; | |
332 | ||
ac4e03d4 JP |
333 | k = parse_uid(de->d_name, &uid); |
334 | if (k < 0) { | |
af1a6c97 | 335 | RET_GATHER(r, log_warning_errno(k, "Failed to parse filename /run/systemd/users/%s as UID, ignoring: %m", de->d_name)); |
ac4e03d4 JP |
336 | continue; |
337 | } | |
338 | ||
339 | k = manager_add_user_by_uid(m, uid, &u); | |
20263082 | 340 | if (k < 0) { |
af1a6c97 | 341 | RET_GATHER(r, log_warning_errno(k, "Failed to add user by filename %s, ignoring: %m", de->d_name)); |
20263082 LP |
342 | continue; |
343 | } | |
344 | ||
9444b1f2 LP |
345 | user_add_to_gc_queue(u); |
346 | ||
af1a6c97 | 347 | RET_GATHER(r, user_load(u)); |
20263082 LP |
348 | } |
349 | ||
20263082 LP |
350 | return r; |
351 | } | |
352 | ||
9d5b6901 | 353 | static int parse_fdname(const char *fdname, char **ret_session_id, dev_t *ret_devno) { |
1bef256c AJ |
354 | _cleanup_strv_free_ char **parts = NULL; |
355 | _cleanup_free_ char *id = NULL; | |
1bef256c AJ |
356 | int r; |
357 | ||
9d5b6901 MY |
358 | assert(ret_session_id); |
359 | assert(ret_devno); | |
360 | ||
1bef256c AJ |
361 | parts = strv_split(fdname, "-"); |
362 | if (!parts) | |
363 | return -ENOMEM; | |
1bef256c | 364 | |
9d5b6901 | 365 | if (_unlikely_(!streq(parts[0], "session"))) |
1bef256c | 366 | return -EINVAL; |
36591e10 | 367 | |
1bef256c AJ |
368 | id = strdup(parts[1]); |
369 | if (!id) | |
370 | return -ENOMEM; | |
371 | ||
9d5b6901 MY |
372 | if (streq(parts[2], "leader")) { |
373 | *ret_session_id = TAKE_PTR(id); | |
374 | *ret_devno = 0; | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | if (_unlikely_(!streq(parts[2], "device"))) | |
1bef256c | 380 | return -EINVAL; |
36591e10 | 381 | |
9d5b6901 MY |
382 | unsigned major, minor; |
383 | ||
36591e10 ZJS |
384 | r = safe_atou(parts[3], &major); |
385 | if (r < 0) | |
386 | return r; | |
9d5b6901 | 387 | |
36591e10 | 388 | r = safe_atou(parts[4], &minor); |
1bef256c AJ |
389 | if (r < 0) |
390 | return r; | |
391 | ||
9d5b6901 MY |
392 | *ret_session_id = TAKE_PTR(id); |
393 | *ret_devno = makedev(major, minor); | |
1bef256c AJ |
394 | |
395 | return 0; | |
396 | } | |
397 | ||
9d5b6901 | 398 | static int deliver_session_device_fd(Session *s, const char *fdname, int fd, dev_t devno) { |
efc19ee4 LP |
399 | SessionDevice *sd; |
400 | struct stat st; | |
efc19ee4 | 401 | |
9d5b6901 MY |
402 | assert(s); |
403 | assert(fdname); | |
efc19ee4 | 404 | assert(fd >= 0); |
9d5b6901 | 405 | assert(devno > 0); |
efc19ee4 LP |
406 | |
407 | if (fstat(fd, &st) < 0) | |
408 | /* The device is allowed to go away at a random point, in which case fstat() failing is | |
409 | * expected. */ | |
9d5b6901 MY |
410 | return log_debug_errno(errno, "Failed to stat device fd '%s' for session '%s': %m", |
411 | fdname, s->id); | |
efc19ee4 | 412 | |
9d5b6901 MY |
413 | if (!S_ISCHR(st.st_mode) || st.st_rdev != devno) |
414 | return log_debug_errno(SYNTHETIC_ERRNO(ENODEV), | |
415 | "Device fd '%s' doesn't point to the expected character device node.", | |
416 | fdname); | |
efc19ee4 | 417 | |
9d5b6901 | 418 | sd = hashmap_get(s->devices, &devno); |
efc19ee4 LP |
419 | if (!sd) |
420 | /* Weird, we got an fd for a session device which wasn't recorded in the session state | |
421 | * file... */ | |
9d5b6901 MY |
422 | return log_warning_errno(SYNTHETIC_ERRNO(ENODEV), |
423 | "Got session device fd '%s' [" DEVNUM_FORMAT_STR "], but not present in session state.", | |
424 | fdname, DEVNUM_FORMAT_VAL(devno)); | |
efc19ee4 | 425 | |
9d5b6901 MY |
426 | log_debug("Attaching session device fd '%s' [" DEVNUM_FORMAT_STR "] to session '%s'.", |
427 | fdname, DEVNUM_FORMAT_VAL(devno), s->id); | |
efc19ee4 LP |
428 | |
429 | session_device_attach_fd(sd, fd, s->was_active); | |
430 | return 0; | |
431 | } | |
432 | ||
9d5b6901 MY |
433 | static int deliver_session_leader_fd_consume(Session *s, const char *fdname, int fd) { |
434 | _cleanup_(pidref_done) PidRef leader_fdstore = PIDREF_NULL; | |
435 | int r; | |
aed24c4c | 436 | |
9d5b6901 MY |
437 | assert(s); |
438 | assert(fdname); | |
439 | assert(fd >= 0); | |
aed24c4c | 440 | |
9d5b6901 MY |
441 | if (!s->leader_fd_saved) |
442 | log_warning("Got leader pidfd for session '%s', but not recorded in session state, proceeding anyway.", | |
443 | s->id); | |
444 | else | |
445 | assert(!pidref_is_set(&s->leader)); | |
a8d5378a | 446 | |
9d5b6901 MY |
447 | r = pidref_set_pidfd_take(&leader_fdstore, fd); |
448 | if (r < 0) { | |
449 | if (r == -ESRCH) | |
450 | log_debug_errno(r, "Leader of session '%s' is gone while deserializing.", s->id); | |
451 | else | |
452 | log_warning_errno(r, "Failed to create reference to leader of session '%s': %m", s->id); | |
aed24c4c | 453 | |
9d5b6901 MY |
454 | close_and_notify_warn(fd, fdname); |
455 | return r; | |
456 | } | |
aed24c4c | 457 | |
9d5b6901 | 458 | assert(pid_is_valid(s->deserialized_pid)); |
aed24c4c | 459 | |
9d5b6901 MY |
460 | if (leader_fdstore.pid != s->deserialized_pid) |
461 | log_warning("Leader from pidfd (" PID_FMT ") doesn't match with LEADER=" PID_FMT " for session '%s', proceeding anyway.", | |
462 | leader_fdstore.pid, s->deserialized_pid, s->id); | |
463 | ||
464 | r = session_set_leader_consume(s, TAKE_PIDREF(leader_fdstore)); | |
465 | if (r < 0) | |
466 | return log_warning_errno(r, "Failed to attach leader pidfd for session '%s': %m", s->id); | |
aed24c4c FB |
467 | |
468 | return 0; | |
469 | } | |
470 | ||
9d5b6901 MY |
471 | static int manager_attach_session_fd_one_consume(Manager *m, const char *fdname, int fd) { |
472 | _cleanup_free_ char *id = NULL; | |
0a87b834 | 473 | dev_t devno = 0; /* Explicit initialization to appease gcc */ |
9d5b6901 MY |
474 | Session *s; |
475 | int r; | |
476 | ||
477 | assert(m); | |
478 | assert(fdname); | |
479 | assert(fd >= 0); | |
480 | ||
481 | r = parse_fdname(fdname, &id, &devno); | |
482 | if (r < 0) { | |
483 | log_warning_errno(r, "Failed to parse stored fd name '%s': %m", fdname); | |
484 | goto fail_close; | |
485 | } | |
486 | ||
487 | s = hashmap_get(m->sessions, id); | |
488 | if (!s) { | |
489 | /* If the session doesn't exist anymore, let's simply close this fd. */ | |
490 | r = log_debug_errno(SYNTHETIC_ERRNO(ENXIO), | |
491 | "Cannot attach fd '%s' to unknown session '%s', ignoring.", fdname, id); | |
492 | goto fail_close; | |
493 | } | |
494 | ||
495 | if (devno > 0) { | |
496 | r = deliver_session_device_fd(s, fdname, fd, devno); | |
497 | if (r < 0) | |
498 | goto fail_close; | |
499 | return 0; | |
500 | } | |
501 | ||
502 | /* Takes ownership of fd on both success and failure */ | |
503 | return deliver_session_leader_fd_consume(s, fdname, fd); | |
504 | ||
505 | fail_close: | |
506 | close_and_notify_warn(fd, fdname); | |
507 | return r; | |
508 | } | |
509 | ||
9588bc32 | 510 | static int manager_enumerate_sessions(Manager *m) { |
9d5b6901 | 511 | _cleanup_strv_free_ char **fdnames = NULL; |
9444b1f2 | 512 | _cleanup_closedir_ DIR *d = NULL; |
9d5b6901 | 513 | int r = 0, n; |
20263082 | 514 | |
9444b1f2 LP |
515 | assert(m); |
516 | ||
517 | /* Read in session data stored on disk */ | |
518 | d = opendir("/run/systemd/sessions"); | |
519 | if (!d) { | |
520 | if (errno == ENOENT) | |
521 | return 0; | |
522 | ||
af1a6c97 | 523 | return log_error_errno(errno, "Failed to open /run/systemd/sessions/: %m"); |
9444b1f2 LP |
524 | } |
525 | ||
526 | FOREACH_DIRENT(de, d, return -errno) { | |
af1a6c97 MY |
527 | Session *s; |
528 | int k; | |
20263082 | 529 | |
9444b1f2 | 530 | if (!dirent_is_file(de)) |
14c3baca LP |
531 | continue; |
532 | ||
9444b1f2 | 533 | k = manager_add_session(m, de->d_name, &s); |
20263082 | 534 | if (k < 0) { |
af1a6c97 | 535 | RET_GATHER(r, log_warning_errno(k, "Failed to add session by filename %s, ignoring: %m", de->d_name)); |
20263082 LP |
536 | continue; |
537 | } | |
538 | ||
9444b1f2 | 539 | session_add_to_gc_queue(s); |
20263082 | 540 | |
9444b1f2 | 541 | k = session_load(s); |
20263082 | 542 | if (k < 0) |
9d5b6901 | 543 | RET_GATHER(r, log_warning_errno(k, "Failed to deserialize session '%s', ignoring: %m", s->id)); |
20263082 LP |
544 | } |
545 | ||
9d5b6901 MY |
546 | n = sd_listen_fds_with_names(/* unset_environment = */ true, &fdnames); |
547 | if (n < 0) | |
548 | return log_error_errno(n, "Failed to acquire passed fd list: %m"); | |
549 | ||
550 | for (int i = 0; i < n; i++) { | |
551 | int fd = SD_LISTEN_FDS_START + i; | |
552 | ||
553 | RET_GATHER(r, manager_attach_session_fd_one_consume(m, fdnames[i], fd)); | |
554 | } | |
aed24c4c | 555 | |
20263082 LP |
556 | return r; |
557 | } | |
558 | ||
9588bc32 | 559 | static int manager_enumerate_inhibitors(Manager *m) { |
9444b1f2 | 560 | _cleanup_closedir_ DIR *d = NULL; |
20263082 LP |
561 | int r = 0; |
562 | ||
563 | assert(m); | |
564 | ||
9444b1f2 | 565 | d = opendir("/run/systemd/inhibit"); |
20263082 LP |
566 | if (!d) { |
567 | if (errno == ENOENT) | |
568 | return 0; | |
569 | ||
af1a6c97 | 570 | return log_error_errno(errno, "Failed to open /run/systemd/inhibit/: %m"); |
20263082 LP |
571 | } |
572 | ||
9444b1f2 | 573 | FOREACH_DIRENT(de, d, return -errno) { |
9444b1f2 | 574 | Inhibitor *i; |
af1a6c97 | 575 | int k; |
20263082 LP |
576 | |
577 | if (!dirent_is_file(de)) | |
578 | continue; | |
579 | ||
9444b1f2 LP |
580 | k = manager_add_inhibitor(m, de->d_name, &i); |
581 | if (k < 0) { | |
af1a6c97 | 582 | RET_GATHER(r, log_warning_errno(k, "Couldn't add inhibitor %s, ignoring: %m", de->d_name)); |
20263082 LP |
583 | continue; |
584 | } | |
585 | ||
af1a6c97 | 586 | RET_GATHER(r, inhibitor_load(i)); |
20263082 LP |
587 | } |
588 | ||
20263082 LP |
589 | return r; |
590 | } | |
591 | ||
eb968396 | 592 | static int manager_dispatch_seat_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
99534007 | 593 | Manager *m = ASSERT_PTR(userdata); |
20263082 | 594 | |
eb968396 | 595 | assert(device); |
20263082 | 596 | |
eb968396 | 597 | manager_process_seat_device(m, device); |
7b77ed8c | 598 | return 0; |
30ed21ce LP |
599 | } |
600 | ||
eb968396 | 601 | static int manager_dispatch_device_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
99534007 | 602 | Manager *m = ASSERT_PTR(userdata); |
718d006a | 603 | |
eb968396 | 604 | assert(device); |
718d006a | 605 | |
eb968396 | 606 | manager_process_seat_device(m, device); |
7b77ed8c | 607 | return 0; |
718d006a DH |
608 | } |
609 | ||
eb968396 | 610 | static int manager_dispatch_vcsa_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
99534007 | 611 | Manager *m = ASSERT_PTR(userdata); |
91bd2c34 | 612 | const char *name; |
30ed21ce | 613 | |
eb968396 | 614 | assert(device); |
30ed21ce LP |
615 | |
616 | /* Whenever a VCSA device is removed try to reallocate our | |
617 | * VTs, to make sure our auto VTs never go away. */ | |
618 | ||
eb968396 | 619 | if (sd_device_get_sysname(device, &name) >= 0 && |
4f209af7 | 620 | startswith(name, "vcsa") && |
a1130022 | 621 | device_for_action(device, SD_DEVICE_REMOVE)) |
7b77ed8c | 622 | seat_preallocate_vts(m->seat0); |
30ed21ce | 623 | |
7b77ed8c | 624 | return 0; |
20263082 LP |
625 | } |
626 | ||
eb968396 | 627 | static int manager_dispatch_button_udev(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
99534007 | 628 | Manager *m = ASSERT_PTR(userdata); |
069cfc85 | 629 | |
eb968396 | 630 | assert(device); |
069cfc85 | 631 | |
eb968396 | 632 | manager_process_button_device(m, device); |
7b77ed8c | 633 | return 0; |
069cfc85 LP |
634 | } |
635 | ||
cc377381 | 636 | static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
99534007 | 637 | Manager *m = ASSERT_PTR(userdata); |
cc377381 | 638 | |
92432fcc | 639 | assert(m->seat0); |
cc377381 | 640 | assert(m->console_active_fd == fd); |
20263082 | 641 | |
92432fcc | 642 | seat_read_active_vt(m->seat0); |
20263082 LP |
643 | return 0; |
644 | } | |
645 | ||
98a77df5 LP |
646 | static int manager_reserve_vt(Manager *m) { |
647 | _cleanup_free_ char *p = NULL; | |
648 | ||
649 | assert(m); | |
650 | ||
651 | if (m->reserve_vt <= 0) | |
652 | return 0; | |
653 | ||
654 | if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0) | |
655 | return log_oom(); | |
656 | ||
657 | m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK); | |
658 | if (m->reserve_vt_fd < 0) { | |
d4d882e5 LP |
659 | |
660 | /* Don't complain on VT-less systems */ | |
661 | if (errno != ENOENT) | |
56f64d95 | 662 | log_warning_errno(errno, "Failed to pin reserved VT: %m"); |
98a77df5 LP |
663 | return -errno; |
664 | } | |
665 | ||
666 | return 0; | |
667 | } | |
668 | ||
cc377381 | 669 | static int manager_connect_bus(Manager *m) { |
cc377381 | 670 | int r; |
31b79c2b | 671 | |
cc377381 LP |
672 | assert(m); |
673 | assert(!m->bus); | |
31b79c2b | 674 | |
76b54375 | 675 | r = sd_bus_default_system(&m->bus); |
f647962d MS |
676 | if (r < 0) |
677 | return log_error_errno(r, "Failed to connect to system bus: %m"); | |
31b79c2b | 678 | |
c2b178d3 | 679 | r = bus_add_implementation(m->bus, &manager_object, m); |
f647962d | 680 | if (r < 0) |
c2b178d3 | 681 | return r; |
20263082 | 682 | |
c2b178d3 | 683 | r = bus_log_control_api_register(m->bus); |
f647962d | 684 | if (r < 0) |
c2b178d3 | 685 | return r; |
20263082 | 686 | |
5d990cc5 | 687 | r = bus_match_signal_async(m->bus, NULL, bus_systemd_mgr, "JobRemoved", match_job_removed, NULL, m); |
f647962d | 688 | if (r < 0) |
75152a4d LP |
689 | return log_error_errno(r, "Failed to request match for JobRemoved: %m"); |
690 | ||
5d990cc5 | 691 | r = bus_match_signal_async(m->bus, NULL, bus_systemd_mgr, "UnitRemoved", match_unit_removed, NULL, m); |
f647962d | 692 | if (r < 0) |
75152a4d LP |
693 | return log_error_errno(r, "Failed to request match for UnitRemoved: %m"); |
694 | ||
695 | r = sd_bus_match_signal_async( | |
696 | m->bus, | |
697 | NULL, | |
698 | "org.freedesktop.systemd1", | |
699 | NULL, | |
700 | "org.freedesktop.DBus.Properties", | |
701 | "PropertiesChanged", | |
702 | match_properties_changed, NULL, m); | |
f647962d | 703 | if (r < 0) |
75152a4d LP |
704 | return log_error_errno(r, "Failed to request match for PropertiesChanged: %m"); |
705 | ||
5d990cc5 | 706 | r = bus_match_signal_async(m->bus, NULL, bus_systemd_mgr, "Reloading", match_reloading, NULL, m); |
f647962d | 707 | if (r < 0) |
75152a4d | 708 | return log_error_errno(r, "Failed to request match for Reloading: %m"); |
6797c324 | 709 | |
5d990cc5 | 710 | r = bus_call_method_async(m->bus, NULL, bus_systemd_mgr, "Subscribe", NULL, NULL, NULL); |
31b2cd5d LP |
711 | if (r < 0) |
712 | return log_error_errno(r, "Failed to enable subscription: %m"); | |
20263082 | 713 | |
0c0b9306 | 714 | r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.login1", 0, NULL, NULL); |
f647962d | 715 | if (r < 0) |
0c0b9306 | 716 | return log_error_errno(r, "Failed to request name: %m"); |
bafd4449 | 717 | |
e11544a8 | 718 | r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL); |
f647962d MS |
719 | if (r < 0) |
720 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); | |
20263082 | 721 | |
20263082 | 722 | return 0; |
20263082 LP |
723 | } |
724 | ||
92683ad2 | 725 | static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) { |
a8d5378a | 726 | Manager *m = ASSERT_PTR(data); |
03677889 | 727 | Session *active; |
92683ad2 DH |
728 | |
729 | /* | |
730 | * We got a VT-switch signal and we have to acknowledge it immediately. | |
731 | * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately, | |
732 | * old user-space might run multiple sessions on a single VT, *sigh*. | |
733 | * Therefore, we have to iterate all sessions and find one with a vtfd | |
734 | * on the requested VT. | |
735 | * As only VTs with active controllers have VT_PROCESS set, our current | |
736 | * notion of the active VT might be wrong (for instance if the switch | |
737 | * happens while we setup VT_PROCESS). Therefore, read the current VT | |
738 | * first and then use s->active->vtnr as reference. Note that this is | |
739 | * not racy, as no further VT-switch can happen as long as we're in | |
740 | * synchronous VT_PROCESS mode. | |
741 | */ | |
742 | ||
743 | assert(m->seat0); | |
36f9fadf | 744 | |
92683ad2 DH |
745 | seat_read_active_vt(m->seat0); |
746 | ||
747 | active = m->seat0->active; | |
748 | if (!active || active->vtnr < 1) { | |
254d1313 | 749 | _cleanup_close_ int fd = -EBADF; |
adb8688b FB |
750 | int r; |
751 | ||
752 | /* We are requested to acknowledge the VT-switch signal by the kernel but | |
753 | * there's no registered sessions for the current VT. Normally this | |
754 | * shouldn't happen but something wrong might have happened when we tried | |
755 | * to release the VT. Better be safe than sorry, and try to release the VT | |
756 | * one more time otherwise the user will be locked with the current VT. */ | |
757 | ||
758 | log_warning("Received VT_PROCESS signal without a registered session, restoring VT."); | |
759 | ||
36f9fadf | 760 | /* At this point we only have the kernel mapping for referring to the current VT. */ |
adb8688b FB |
761 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK); |
762 | if (fd < 0) { | |
36f9fadf | 763 | log_warning_errno(fd, "Failed to open current VT, ignoring: %m"); |
adb8688b FB |
764 | return 0; |
765 | } | |
766 | ||
36f9fadf | 767 | r = vt_release(fd, /* restore = */ true); |
adb8688b | 768 | if (r < 0) |
36f9fadf | 769 | log_warning_errno(r, "Failed to release current VT, ignoring: %m"); |
adb8688b | 770 | |
92683ad2 DH |
771 | return 0; |
772 | } | |
773 | ||
03677889 | 774 | if (active->vtfd >= 0) |
2ec3ff66 | 775 | session_leave_vt(active); |
03677889 YW |
776 | else |
777 | LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) | |
92683ad2 | 778 | if (iter->vtnr == active->vtnr && iter->vtfd >= 0) { |
2ec3ff66 | 779 | session_leave_vt(iter); |
92683ad2 DH |
780 | break; |
781 | } | |
92683ad2 DH |
782 | |
783 | return 0; | |
784 | } | |
785 | ||
20263082 | 786 | static int manager_connect_console(Manager *m) { |
cc377381 | 787 | int r; |
20263082 LP |
788 | |
789 | assert(m); | |
790 | assert(m->console_active_fd < 0); | |
791 | ||
0b6d55ca LP |
792 | /* On certain systems (such as S390, Xen, and containers) /dev/tty0 does not exist (as there is no VC), so |
793 | * don't fail if we can't open it. */ | |
794 | ||
cc377381 | 795 | if (access("/dev/tty0", F_OK) < 0) |
74afee9c | 796 | return 0; |
74afee9c | 797 | |
20263082 LP |
798 | m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC); |
799 | if (m->console_active_fd < 0) { | |
cdc564d2 | 800 | |
0b6d55ca LP |
801 | /* On some systems /dev/tty0 may exist even though /sys/class/tty/tty0 does not. These are broken, but |
802 | * common. Let's complain but continue anyway. */ | |
803 | if (errno == ENOENT) { | |
804 | log_warning_errno(errno, "System has /dev/tty0 but not /sys/class/tty/tty0/active which is broken, ignoring: %m"); | |
cdc564d2 | 805 | return 0; |
0b6d55ca | 806 | } |
cdc564d2 | 807 | |
e1427b13 | 808 | return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m"); |
20263082 LP |
809 | } |
810 | ||
151b9b96 | 811 | r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m); |
0b6d55ca LP |
812 | if (r < 0) |
813 | return log_error_errno(r, "Failed to watch foreground console: %m"); | |
20263082 | 814 | |
92683ad2 DH |
815 | /* |
816 | * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used | |
817 | * as VT-acquire signal. We ignore any acquire-events (yes, we still | |
818 | * have to provide a valid signal-number for it!) and acknowledge all | |
819 | * release events immediately. | |
820 | */ | |
821 | ||
baaa35ad ZJS |
822 | if (SIGRTMIN + 1 > SIGRTMAX) |
823 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
c0f86d66 | 824 | "Not enough real-time signals available: %i-%i", |
baaa35ad | 825 | SIGRTMIN, SIGRTMAX); |
92683ad2 | 826 | |
9c274488 | 827 | assert_se(ignore_signals(SIGRTMIN + 1) >= 0); |
72c0a2c2 | 828 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0); |
92683ad2 DH |
829 | |
830 | r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m); | |
831 | if (r < 0) | |
0b6d55ca | 832 | return log_error_errno(r, "Failed to subscribe to signal: %m"); |
92683ad2 | 833 | |
20263082 LP |
834 | return 0; |
835 | } | |
836 | ||
837 | static int manager_connect_udev(Manager *m) { | |
14c3baca | 838 | int r; |
20263082 LP |
839 | |
840 | assert(m); | |
eb968396 YW |
841 | assert(!m->device_seat_monitor); |
842 | assert(!m->device_monitor); | |
843 | assert(!m->device_vcsa_monitor); | |
844 | assert(!m->device_button_monitor); | |
20263082 | 845 | |
eb968396 YW |
846 | r = sd_device_monitor_new(&m->device_seat_monitor); |
847 | if (r < 0) | |
848 | return r; | |
20263082 | 849 | |
eb968396 | 850 | r = sd_device_monitor_filter_add_match_tag(m->device_seat_monitor, "master-of-seat"); |
14c3baca LP |
851 | if (r < 0) |
852 | return r; | |
20263082 | 853 | |
deb2b734 | 854 | r = sd_device_monitor_attach_event(m->device_seat_monitor, m->event); |
14c3baca LP |
855 | if (r < 0) |
856 | return r; | |
20263082 | 857 | |
deb2b734 | 858 | r = sd_device_monitor_start(m->device_seat_monitor, manager_dispatch_seat_udev, m); |
cc377381 LP |
859 | if (r < 0) |
860 | return r; | |
069cfc85 | 861 | |
17bf3c55 | 862 | (void) sd_device_monitor_set_description(m->device_seat_monitor, "seat"); |
deb2b734 | 863 | |
eb968396 YW |
864 | r = sd_device_monitor_new(&m->device_monitor); |
865 | if (r < 0) | |
866 | return r; | |
718d006a | 867 | |
eb968396 | 868 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "input", NULL); |
718d006a DH |
869 | if (r < 0) |
870 | return r; | |
871 | ||
eb968396 | 872 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "graphics", NULL); |
718d006a DH |
873 | if (r < 0) |
874 | return r; | |
875 | ||
eb968396 | 876 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "drm", NULL); |
718d006a DH |
877 | if (r < 0) |
878 | return r; | |
879 | ||
deb2b734 | 880 | r = sd_device_monitor_attach_event(m->device_monitor, m->event); |
718d006a DH |
881 | if (r < 0) |
882 | return r; | |
883 | ||
deb2b734 | 884 | r = sd_device_monitor_start(m->device_monitor, manager_dispatch_device_udev, m); |
cc377381 LP |
885 | if (r < 0) |
886 | return r; | |
718d006a | 887 | |
17bf3c55 | 888 | (void) sd_device_monitor_set_description(m->device_monitor, "input,graphics,drm"); |
deb2b734 | 889 | |
6de0e0e5 | 890 | /* Don't watch keys if nobody cares */ |
e25937a3 | 891 | if (!manager_all_buttons_ignored(m)) { |
eb968396 YW |
892 | r = sd_device_monitor_new(&m->device_button_monitor); |
893 | if (r < 0) | |
894 | return r; | |
069cfc85 | 895 | |
eb968396 | 896 | r = sd_device_monitor_filter_add_match_tag(m->device_button_monitor, "power-switch"); |
6de0e0e5 LP |
897 | if (r < 0) |
898 | return r; | |
069cfc85 | 899 | |
eb968396 | 900 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_button_monitor, "input", NULL); |
6de0e0e5 LP |
901 | if (r < 0) |
902 | return r; | |
069cfc85 | 903 | |
deb2b734 | 904 | r = sd_device_monitor_attach_event(m->device_button_monitor, m->event); |
6de0e0e5 LP |
905 | if (r < 0) |
906 | return r; | |
069cfc85 | 907 | |
deb2b734 | 908 | r = sd_device_monitor_start(m->device_button_monitor, manager_dispatch_button_udev, m); |
cc377381 LP |
909 | if (r < 0) |
910 | return r; | |
deb2b734 | 911 | |
17bf3c55 | 912 | (void) sd_device_monitor_set_description(m->device_button_monitor, "button"); |
6de0e0e5 | 913 | } |
069cfc85 | 914 | |
976c088a | 915 | /* Don't bother watching VCSA devices, if nobody cares */ |
6de0e0e5 | 916 | if (m->n_autovts > 0 && m->console_active_fd >= 0) { |
30ed21ce | 917 | |
eb968396 YW |
918 | r = sd_device_monitor_new(&m->device_vcsa_monitor); |
919 | if (r < 0) | |
920 | return r; | |
30ed21ce | 921 | |
eb968396 | 922 | r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_vcsa_monitor, "vc", NULL); |
6de0e0e5 LP |
923 | if (r < 0) |
924 | return r; | |
30ed21ce | 925 | |
deb2b734 | 926 | r = sd_device_monitor_attach_event(m->device_vcsa_monitor, m->event); |
6de0e0e5 LP |
927 | if (r < 0) |
928 | return r; | |
30ed21ce | 929 | |
deb2b734 | 930 | r = sd_device_monitor_start(m->device_vcsa_monitor, manager_dispatch_vcsa_udev, m); |
cc377381 LP |
931 | if (r < 0) |
932 | return r; | |
deb2b734 | 933 | |
17bf3c55 | 934 | (void) sd_device_monitor_set_description(m->device_vcsa_monitor, "vcsa"); |
6de0e0e5 | 935 | } |
20263082 LP |
936 | |
937 | return 0; | |
938 | } | |
939 | ||
905f0a39 | 940 | static void manager_gc(Manager *m, bool drop_not_started) { |
14c3baca LP |
941 | Seat *seat; |
942 | Session *session; | |
943 | User *user; | |
944 | ||
945 | assert(m); | |
946 | ||
52e3671b | 947 | while ((seat = LIST_POP(gc_queue, m->seat_gc_queue))) { |
14c3baca LP |
948 | seat->in_gc_queue = false; |
949 | ||
5c093a23 | 950 | if (seat_may_gc(seat, drop_not_started)) { |
bda62573 | 951 | seat_stop(seat, /* force = */ false); |
14c3baca LP |
952 | seat_free(seat); |
953 | } | |
954 | } | |
955 | ||
52e3671b | 956 | while ((session = LIST_POP(gc_queue, m->session_gc_queue))) { |
14c3baca LP |
957 | session->in_gc_queue = false; |
958 | ||
6c75e317 | 959 | /* First, if we are not closing yet, initiate stopping. */ |
5c093a23 | 960 | if (session_may_gc(session, drop_not_started) && |
5f41d1f1 | 961 | session_get_state(session) != SESSION_CLOSING) |
bda62573 | 962 | (void) session_stop(session, /* force = */ false); |
5f41d1f1 | 963 | |
6c75e317 ZJS |
964 | /* Normally, this should make the session referenced again, if it doesn't then let's get rid |
965 | * of it immediately. */ | |
5c093a23 | 966 | if (session_may_gc(session, drop_not_started)) { |
75bbdf47 | 967 | (void) session_finalize(session); |
14c3baca LP |
968 | session_free(session); |
969 | } | |
970 | } | |
971 | ||
52e3671b | 972 | while ((user = LIST_POP(gc_queue, m->user_gc_queue))) { |
14c3baca LP |
973 | user->in_gc_queue = false; |
974 | ||
b58b227a | 975 | /* First step: queue stop jobs */ |
5c093a23 | 976 | if (user_may_gc(user, drop_not_started)) |
75bbdf47 | 977 | (void) user_stop(user, false); |
5f41d1f1 | 978 | |
b58b227a | 979 | /* Second step: finalize user */ |
5c093a23 | 980 | if (user_may_gc(user, drop_not_started)) { |
75bbdf47 | 981 | (void) user_finalize(user); |
14c3baca LP |
982 | user_free(user); |
983 | } | |
984 | } | |
985 | } | |
986 | ||
cc377381 | 987 | static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) { |
99534007 | 988 | Manager *m = ASSERT_PTR(userdata); |
23406ce5 | 989 | struct dual_timestamp since; |
cc377381 | 990 | usec_t n, elapse; |
23406ce5 | 991 | int r; |
23406ce5 | 992 | |
23406ce5 | 993 | if (m->idle_action == HANDLE_IGNORE || |
cc377381 LP |
994 | m->idle_action_usec <= 0) |
995 | return 0; | |
23406ce5 | 996 | |
23406ce5 LP |
997 | n = now(CLOCK_MONOTONIC); |
998 | ||
999 | r = manager_get_idle_hint(m, &since); | |
4e2cfb77 | 1000 | if (r <= 0) { |
39ccc87c | 1001 | /* Not idle. Let's check if after a timeout it might be idle then. */ |
cc377381 | 1002 | elapse = n + m->idle_action_usec; |
4e2cfb77 MS |
1003 | m->was_idle = false; |
1004 | } else { | |
1005 | ||
23406ce5 LP |
1006 | /* Idle! Let's see if it's time to do something, or if |
1007 | * we shall sleep for longer. */ | |
1008 | ||
1009 | if (n >= since.monotonic + m->idle_action_usec && | |
1010 | (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) { | |
4e2cfb77 MS |
1011 | bool is_edge = false; |
1012 | ||
1013 | /* We weren't idle previously or some activity happened while we were sleeping, and now we are | |
1014 | * idle. Let's remember that for the next time and make this an edge transition. */ | |
1015 | if (!m->was_idle || since.monotonic >= m->idle_action_not_before_usec) { | |
1016 | is_edge = true; | |
1017 | m->was_idle = true; | |
1018 | } | |
1019 | ||
1020 | if (m->idle_action == HANDLE_LOCK && !is_edge) | |
1021 | /* We are idle and we were before so we are actually not taking any action. */ | |
1022 | log_debug("System idle."); | |
1023 | else | |
1024 | log_info("System idle. Will %s now.", handle_action_verb_to_string(m->idle_action)); | |
23406ce5 | 1025 | |
4e2cfb77 | 1026 | manager_handle_action(m, 0, m->idle_action, false, is_edge); |
23406ce5 LP |
1027 | m->idle_action_not_before_usec = n; |
1028 | } | |
1029 | ||
cc377381 | 1030 | elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec; |
23406ce5 LP |
1031 | } |
1032 | ||
cc377381 | 1033 | if (!m->idle_action_event_source) { |
23406ce5 | 1034 | |
6a0f1f6d LP |
1035 | r = sd_event_add_time( |
1036 | m->event, | |
1037 | &m->idle_action_event_source, | |
1038 | CLOCK_MONOTONIC, | |
e20bfa50 | 1039 | elapse, MIN(USEC_PER_SEC*30, m->idle_action_usec), /* accuracy of 30s, but don't have an accuracy lower than the idle action timeout */ |
6a0f1f6d | 1040 | manager_dispatch_idle_action, m); |
f647962d MS |
1041 | if (r < 0) |
1042 | return log_error_errno(r, "Failed to add idle event source: %m"); | |
23406ce5 | 1043 | |
718db961 | 1044 | r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10); |
f647962d MS |
1045 | if (r < 0) |
1046 | return log_error_errno(r, "Failed to set idle event source priority: %m"); | |
cc377381 LP |
1047 | } else { |
1048 | r = sd_event_source_set_time(m->idle_action_event_source, elapse); | |
f647962d MS |
1049 | if (r < 0) |
1050 | return log_error_errno(r, "Failed to set idle event timer: %m"); | |
23406ce5 | 1051 | |
cc377381 | 1052 | r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT); |
f647962d MS |
1053 | if (r < 0) |
1054 | return log_error_errno(r, "Failed to enable idle event timer: %m"); | |
23406ce5 LP |
1055 | } |
1056 | ||
1057 | return 0; | |
23406ce5 | 1058 | } |
cc377381 | 1059 | |
a2ed7077 ZJS |
1060 | static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { |
1061 | Manager *m = userdata; | |
1062 | int r; | |
1063 | ||
5d71e463 LP |
1064 | (void) sd_notifyf(/* unset= */ false, |
1065 | "RELOADING=1\n" | |
1066 | "STATUS=Reloading configuration...\n" | |
1067 | "MONOTONIC_USEC=" USEC_FMT, now(CLOCK_MONOTONIC)); | |
1068 | ||
a2ed7077 ZJS |
1069 | manager_reset_config(m); |
1070 | r = manager_parse_config_file(m); | |
1071 | if (r < 0) | |
1072 | log_warning_errno(r, "Failed to parse config file, using defaults: %m"); | |
1073 | else | |
1074 | log_info("Config file reloaded."); | |
1075 | ||
5d71e463 | 1076 | (void) sd_notify(/* unset= */ false, NOTIFY_READY); |
a2ed7077 ZJS |
1077 | return 0; |
1078 | } | |
1079 | ||
905f0a39 | 1080 | static int manager_startup(Manager *m) { |
20263082 | 1081 | int r; |
14c3baca LP |
1082 | Seat *seat; |
1083 | Session *session; | |
513cf7da | 1084 | User *user; |
ed4ba7e4 | 1085 | Button *button; |
f8e2fb7b | 1086 | Inhibitor *inhibitor; |
20263082 LP |
1087 | |
1088 | assert(m); | |
20263082 | 1089 | |
a2ed7077 ZJS |
1090 | r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m); |
1091 | if (r < 0) | |
1092 | return log_error_errno(r, "Failed to register SIGHUP handler: %m"); | |
1093 | ||
3d0ef5c7 LP |
1094 | /* Connect to utmp */ |
1095 | manager_connect_utmp(m); | |
1096 | ||
976c088a LP |
1097 | /* Connect to console */ |
1098 | r = manager_connect_console(m); | |
20263082 LP |
1099 | if (r < 0) |
1100 | return r; | |
1101 | ||
976c088a LP |
1102 | /* Connect to udev */ |
1103 | r = manager_connect_udev(m); | |
f647962d MS |
1104 | if (r < 0) |
1105 | return log_error_errno(r, "Failed to create udev watchers: %m"); | |
20263082 LP |
1106 | |
1107 | /* Connect to the bus */ | |
1108 | r = manager_connect_bus(m); | |
1109 | if (r < 0) | |
1110 | return r; | |
1111 | ||
14c3baca | 1112 | /* Instantiate magic seat 0 */ |
92432fcc | 1113 | r = manager_add_seat(m, "seat0", &m->seat0); |
f647962d MS |
1114 | if (r < 0) |
1115 | return log_error_errno(r, "Failed to add seat0: %m"); | |
14c3baca | 1116 | |
9d10cbee | 1117 | r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec); |
f9cd6be1 | 1118 | if (r < 0) |
da927ba9 | 1119 | log_warning_errno(r, "Failed to set up lid switch ignore event source: %m"); |
f9cd6be1 | 1120 | |
20263082 | 1121 | /* Deserialize state */ |
042f5988 ZJS |
1122 | r = manager_enumerate_devices(m); |
1123 | if (r < 0) | |
da927ba9 | 1124 | log_warning_errno(r, "Device enumeration failed: %m"); |
042f5988 ZJS |
1125 | |
1126 | r = manager_enumerate_seats(m); | |
1127 | if (r < 0) | |
da927ba9 | 1128 | log_warning_errno(r, "Seat enumeration failed: %m"); |
042f5988 ZJS |
1129 | |
1130 | r = manager_enumerate_users(m); | |
1131 | if (r < 0) | |
da927ba9 | 1132 | log_warning_errno(r, "User enumeration failed: %m"); |
042f5988 ZJS |
1133 | |
1134 | r = manager_enumerate_sessions(m); | |
1135 | if (r < 0) | |
da927ba9 | 1136 | log_warning_errno(r, "Session enumeration failed: %m"); |
042f5988 ZJS |
1137 | |
1138 | r = manager_enumerate_inhibitors(m); | |
1139 | if (r < 0) | |
da927ba9 | 1140 | log_warning_errno(r, "Inhibitor enumeration failed: %m"); |
042f5988 ZJS |
1141 | |
1142 | r = manager_enumerate_buttons(m); | |
1143 | if (r < 0) | |
da927ba9 | 1144 | log_warning_errno(r, "Button enumeration failed: %m"); |
20263082 | 1145 | |
aa6123e8 LN |
1146 | manager_load_scheduled_shutdown(m); |
1147 | ||
4a4b033f LP |
1148 | /* Remove stale objects before we start them */ |
1149 | manager_gc(m, false); | |
1150 | ||
98a77df5 LP |
1151 | /* Reserve the special reserved VT */ |
1152 | manager_reserve_vt(m); | |
1153 | ||
3d0ef5c7 LP |
1154 | /* Read in utmp if it exists */ |
1155 | manager_read_utmp(m); | |
1156 | ||
14c3baca | 1157 | /* And start everything */ |
90e74a66 | 1158 | HASHMAP_FOREACH(seat, m->seats) |
75bbdf47 | 1159 | (void) seat_start(seat); |
14c3baca | 1160 | |
513cf7da MS |
1161 | HASHMAP_FOREACH(user, m->users) |
1162 | (void) user_start(user); | |
1163 | ||
90e74a66 | 1164 | HASHMAP_FOREACH(session, m->sessions) |
25a1ab4e | 1165 | (void) session_start(session, NULL, NULL); |
20263082 | 1166 | |
90e74a66 | 1167 | HASHMAP_FOREACH(inhibitor, m->inhibitors) { |
11eae36d LP |
1168 | (void) inhibitor_start(inhibitor); |
1169 | ||
1170 | /* Let's see if the inhibitor is dead now, then remove it */ | |
1171 | if (inhibitor_is_orphan(inhibitor)) { | |
1172 | inhibitor_stop(inhibitor); | |
1173 | inhibitor_free(inhibitor); | |
1174 | } | |
1175 | } | |
f8e2fb7b | 1176 | |
90e74a66 | 1177 | HASHMAP_FOREACH(button, m->buttons) |
2d62c530 | 1178 | button_check_switches(button); |
ed4ba7e4 | 1179 | |
cc377381 | 1180 | manager_dispatch_idle_action(NULL, 0, m); |
23406ce5 | 1181 | |
20263082 LP |
1182 | return 0; |
1183 | } | |
1184 | ||
905f0a39 | 1185 | static int manager_run(Manager *m) { |
cc377381 LP |
1186 | int r; |
1187 | ||
20263082 LP |
1188 | assert(m); |
1189 | ||
1190 | for (;;) { | |
cc377381 LP |
1191 | r = sd_event_get_state(m->event); |
1192 | if (r < 0) | |
1193 | return r; | |
1194 | if (r == SD_EVENT_FINISHED) | |
1195 | return 0; | |
20263082 | 1196 | |
4a4b033f | 1197 | manager_gc(m, true); |
14c3baca | 1198 | |
418b22b8 DM |
1199 | r = manager_dispatch_delayed(m, false); |
1200 | if (r < 0) | |
1201 | return r; | |
1202 | if (r > 0) | |
1203 | continue; | |
1204 | ||
f5fbe71d | 1205 | r = sd_event_run(m->event, UINT64_MAX); |
cc377381 LP |
1206 | if (r < 0) |
1207 | return r; | |
20263082 | 1208 | } |
20263082 LP |
1209 | } |
1210 | ||
c11cfa28 | 1211 | static int run(int argc, char *argv[]) { |
5ce8ce90 | 1212 | _cleanup_(manager_freep) Manager *m = NULL; |
d7ac0952 | 1213 | _unused_ _cleanup_(notify_on_cleanup) const char *notify_message = NULL; |
5eda94dd | 1214 | int r; |
20263082 | 1215 | |
3eff4208 | 1216 | log_set_facility(LOG_AUTH); |
d2acb93d | 1217 | log_setup(); |
20263082 | 1218 | |
fc021a5b ZJS |
1219 | r = service_parse_argv("systemd-logind.service", |
1220 | "Manager for user logins and devices and privileged operations.", | |
d4cc0edf ZJS |
1221 | BUS_IMPLEMENTATIONS(&manager_object, |
1222 | &log_control_object), | |
fc021a5b ZJS |
1223 | argc, argv); |
1224 | if (r <= 0) | |
1225 | return r; | |
4c12626c | 1226 | |
fc021a5b | 1227 | umask(0022); |
20263082 | 1228 | |
a452c807 | 1229 | r = mac_init(); |
c11cfa28 | 1230 | if (r < 0) |
a9ba0e32 | 1231 | return r; |
4b51966c | 1232 | |
6c75e317 ZJS |
1233 | /* Always create the directories people can create inotify watches in. Note that some applications |
1234 | * might check for the existence of /run/systemd/seats/ to determine whether logind is available, so | |
1235 | * please always make sure these directories are created early on and unconditionally. */ | |
90b8a009 LP |
1236 | (void) mkdir_label("/run/systemd/seats", 0755); |
1237 | (void) mkdir_label("/run/systemd/users", 0755); | |
1238 | (void) mkdir_label("/run/systemd/sessions", 0755); | |
bb27ff66 | 1239 | |
92e1a209 | 1240 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGHUP, SIGTERM, SIGINT, SIGCHLD, SIGRTMIN+18, -1) >= 0); |
fcfa765d | 1241 | |
23462168 | 1242 | r = manager_new(&m); |
c11cfa28 ZJS |
1243 | if (r < 0) |
1244 | return log_error_errno(r, "Failed to allocate manager object: %m"); | |
20263082 | 1245 | |
23462168 | 1246 | (void) manager_parse_config_file(m); |
193197e8 | 1247 | |
20263082 | 1248 | r = manager_startup(m); |
c11cfa28 ZJS |
1249 | if (r < 0) |
1250 | return log_error_errno(r, "Failed to fully start up daemon: %m"); | |
20263082 | 1251 | |
21fe744c ZJS |
1252 | notify_message = notify_start(NOTIFY_READY, NOTIFY_STOPPING); |
1253 | return manager_run(m); | |
20263082 | 1254 | } |
c11cfa28 ZJS |
1255 | |
1256 | DEFINE_MAIN_FUNCTION(run); |