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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
5cb5a6ff | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
25ac040b | 22 | #include <errno.h> |
f94ea366 | 23 | #include <sys/epoll.h> |
25ac040b LP |
24 | #include <libudev.h> |
25 | ||
87f0e418 | 26 | #include "unit.h" |
5cb5a6ff LP |
27 | #include "device.h" |
28 | #include "strv.h" | |
25ac040b | 29 | #include "log.h" |
9e2f7c11 | 30 | #include "unit-name.h" |
4139c1b2 | 31 | #include "dbus-device.h" |
f6a6225e | 32 | #include "def.h" |
5cb5a6ff | 33 | |
f50e0a01 LP |
34 | static const UnitActiveState state_translation_table[_DEVICE_STATE_MAX] = { |
35 | [DEVICE_DEAD] = UNIT_INACTIVE, | |
73608ed9 | 36 | [DEVICE_PLUGGED] = UNIT_ACTIVE |
f50e0a01 LP |
37 | }; |
38 | ||
8fe914ec LP |
39 | static void device_unset_sysfs(Device *d) { |
40 | Device *first; | |
41 | ||
42 | assert(d); | |
43 | ||
a7f241db LP |
44 | if (!d->sysfs) |
45 | return; | |
46 | ||
47 | /* Remove this unit from the chain of devices which share the | |
48 | * same sysfs path. */ | |
49 | first = hashmap_get(d->meta.manager->devices_by_sysfs, d->sysfs); | |
50 | LIST_REMOVE(Device, same_sysfs, first, d); | |
8fe914ec | 51 | |
a7f241db LP |
52 | if (first) |
53 | hashmap_remove_and_replace(d->meta.manager->devices_by_sysfs, d->sysfs, first->sysfs, first); | |
54 | else | |
55 | hashmap_remove(d->meta.manager->devices_by_sysfs, d->sysfs); | |
56 | ||
57 | free(d->sysfs); | |
58 | d->sysfs = NULL; | |
8fe914ec LP |
59 | } |
60 | ||
faf919f1 LP |
61 | static void device_init(Unit *u) { |
62 | Device *d = DEVICE(u); | |
63 | ||
64 | assert(d); | |
65 | assert(d->meta.load_state == UNIT_STUB); | |
66 | ||
8fe914ec LP |
67 | /* In contrast to all other unit types we timeout jobs waiting |
68 | * for devices by default. This is because they otherwise wait | |
35b8ca3a | 69 | * indefinitely for plugged in devices, something which cannot |
8fe914ec LP |
70 | * happen for the other units since their operations time out |
71 | * anyway. */ | |
faf919f1 | 72 | d->meta.job_timeout = DEFAULT_TIMEOUT_USEC; |
c8f4d764 LP |
73 | |
74 | d->meta.ignore_on_isolate = true; | |
faf919f1 LP |
75 | } |
76 | ||
87f0e418 LP |
77 | static void device_done(Unit *u) { |
78 | Device *d = DEVICE(u); | |
034c6ed7 LP |
79 | |
80 | assert(d); | |
e537352b | 81 | |
8fe914ec | 82 | device_unset_sysfs(d); |
e537352b LP |
83 | } |
84 | ||
f50e0a01 LP |
85 | static void device_set_state(Device *d, DeviceState state) { |
86 | DeviceState old_state; | |
87 | assert(d); | |
5cb5a6ff | 88 | |
f50e0a01 LP |
89 | old_state = d->state; |
90 | d->state = state; | |
5cb5a6ff | 91 | |
e537352b | 92 | if (state != old_state) |
40d50879 | 93 | log_debug("%s changed %s -> %s", |
4cd1fbcc | 94 | d->meta.id, |
a16e1123 LP |
95 | device_state_to_string(old_state), |
96 | device_state_to_string(state)); | |
f50e0a01 | 97 | |
e2f3b44c | 98 | unit_notify(UNIT(d), state_translation_table[old_state], state_translation_table[state], true); |
f50e0a01 LP |
99 | } |
100 | ||
101 | static int device_coldplug(Unit *u) { | |
102 | Device *d = DEVICE(u); | |
103 | ||
104 | assert(d); | |
105 | assert(d->state == DEVICE_DEAD); | |
106 | ||
107 | if (d->sysfs) | |
73608ed9 | 108 | device_set_state(d, DEVICE_PLUGGED); |
f50e0a01 LP |
109 | |
110 | return 0; | |
111 | } | |
112 | ||
113 | static void device_dump(Unit *u, FILE *f, const char *prefix) { | |
25ac040b | 114 | Device *d = DEVICE(u); |
5cb5a6ff | 115 | |
25ac040b | 116 | assert(d); |
5cb5a6ff LP |
117 | |
118 | fprintf(f, | |
25ac040b LP |
119 | "%sDevice State: %s\n" |
120 | "%sSysfs Path: %s\n", | |
a16e1123 | 121 | prefix, device_state_to_string(d->state), |
f50e0a01 LP |
122 | prefix, strna(d->sysfs)); |
123 | } | |
124 | ||
125 | static UnitActiveState device_active_state(Unit *u) { | |
126 | assert(u); | |
127 | ||
128 | return state_translation_table[DEVICE(u)->state]; | |
25ac040b LP |
129 | } |
130 | ||
10a94420 LP |
131 | static const char *device_sub_state_to_string(Unit *u) { |
132 | assert(u); | |
133 | ||
a16e1123 | 134 | return device_state_to_string(DEVICE(u)->state); |
10a94420 LP |
135 | } |
136 | ||
8fe914ec | 137 | static int device_add_escaped_name(Unit *u, const char *dn) { |
25ac040b LP |
138 | char *e; |
139 | int r; | |
140 | ||
141 | assert(u); | |
142 | assert(dn); | |
143 | assert(dn[0] == '/'); | |
144 | ||
a16e1123 | 145 | if (!(e = unit_name_from_path(dn, ".device"))) |
25ac040b LP |
146 | return -ENOMEM; |
147 | ||
148 | r = unit_add_name(u, e); | |
149 | free(e); | |
150 | ||
151 | if (r < 0 && r != -EEXIST) | |
152 | return r; | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
aab14b13 LP |
157 | static int device_find_escape_name(Manager *m, const char *dn, Unit **_u) { |
158 | char *e; | |
159 | Unit *u; | |
160 | ||
161 | assert(m); | |
162 | assert(dn); | |
163 | assert(dn[0] == '/'); | |
164 | assert(_u); | |
165 | ||
a16e1123 | 166 | if (!(e = unit_name_from_path(dn, ".device"))) |
aab14b13 LP |
167 | return -ENOMEM; |
168 | ||
169 | u = manager_get_unit(m, e); | |
170 | free(e); | |
171 | ||
172 | if (u) { | |
173 | *_u = u; | |
174 | return 1; | |
175 | } | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
8fe914ec LP |
180 | static int device_update_unit(Manager *m, struct udev_device *dev, const char *path, bool main) { |
181 | const char *sysfs, *model; | |
25ac040b LP |
182 | Unit *u = NULL; |
183 | int r; | |
25ac040b | 184 | bool delete; |
25ac040b LP |
185 | |
186 | assert(m); | |
187 | ||
7f275a9f LP |
188 | if (!(sysfs = udev_device_get_syspath(dev))) |
189 | return -ENOMEM; | |
190 | ||
8fe914ec | 191 | if ((r = device_find_escape_name(m, path, &u)) < 0) |
aab14b13 | 192 | return r; |
25ac040b | 193 | |
5845b46b | 194 | if (u && DEVICE(u)->sysfs && !path_equal(DEVICE(u)->sysfs, sysfs)) |
8fe914ec | 195 | return -EEXIST; |
25ac040b | 196 | |
aab14b13 LP |
197 | if (!u) { |
198 | delete = true; | |
199 | ||
200 | if (!(u = unit_new(m))) | |
201 | return -ENOMEM; | |
25ac040b | 202 | |
8fe914ec | 203 | if ((r = device_add_escaped_name(u, path)) < 0) |
25ac040b LP |
204 | goto fail; |
205 | ||
ee6cb288 LP |
206 | unit_add_to_load_queue(u); |
207 | } else | |
208 | delete = false; | |
209 | ||
210 | /* If this was created via some dependency and has not | |
211 | * actually been seen yet ->sysfs will not be | |
212 | * initialized. Hence initialize it if necessary. */ | |
213 | ||
214 | if (!DEVICE(u)->sysfs) { | |
215 | Device *first; | |
216 | ||
25ac040b LP |
217 | if (!(DEVICE(u)->sysfs = strdup(sysfs))) { |
218 | r = -ENOMEM; | |
219 | goto fail; | |
220 | } | |
221 | ||
8fe914ec LP |
222 | if (!m->devices_by_sysfs) |
223 | if (!(m->devices_by_sysfs = hashmap_new(string_hash_func, string_compare_func))) { | |
224 | r = -ENOMEM; | |
225 | goto fail; | |
226 | } | |
25ac040b | 227 | |
8fe914ec LP |
228 | first = hashmap_get(m->devices_by_sysfs, sysfs); |
229 | LIST_PREPEND(Device, same_sysfs, first, DEVICE(u)); | |
230 | ||
231 | if ((r = hashmap_replace(m->devices_by_sysfs, DEVICE(u)->sysfs, first)) < 0) | |
25ac040b | 232 | goto fail; |
ee6cb288 | 233 | } |
8fe914ec | 234 | |
aab14b13 LP |
235 | if ((model = udev_device_get_property_value(dev, "ID_MODEL_FROM_DATABASE")) || |
236 | (model = udev_device_get_property_value(dev, "ID_MODEL"))) { | |
237 | if ((r = unit_set_description(u, model)) < 0) | |
238 | goto fail; | |
4e85aff4 | 239 | } else |
8fe914ec | 240 | if ((r = unit_set_description(u, path)) < 0) |
4e85aff4 | 241 | goto fail; |
aab14b13 | 242 | |
8fe914ec LP |
243 | if (main) { |
244 | /* The additional systemd udev properties we only | |
245 | * interpret for the main object */ | |
246 | const char *wants, *alias; | |
247 | ||
248 | if ((alias = udev_device_get_property_value(dev, "SYSTEMD_ALIAS"))) { | |
249 | if (!is_path(alias)) | |
250 | log_warning("SYSTEMD_ALIAS for %s is not a path, ignoring: %s", sysfs, alias); | |
251 | else { | |
252 | if ((r = device_add_escaped_name(u, alias)) < 0) | |
253 | goto fail; | |
b866264a | 254 | } |
8fe914ec | 255 | } |
25ac040b | 256 | |
8fe914ec LP |
257 | if ((wants = udev_device_get_property_value(dev, "SYSTEMD_WANTS"))) { |
258 | char *state, *w; | |
259 | size_t l; | |
25ac040b | 260 | |
8fe914ec LP |
261 | FOREACH_WORD_QUOTED(w, l, wants, state) { |
262 | char *e; | |
263 | ||
264 | if (!(e = strndup(w, l))) { | |
265 | r = -ENOMEM; | |
266 | goto fail; | |
267 | } | |
268 | ||
269 | r = unit_add_dependency_by_name(u, UNIT_WANTS, e, NULL, true); | |
270 | free(e); | |
271 | ||
272 | if (r < 0) | |
273 | goto fail; | |
274 | } | |
25ac040b | 275 | } |
a7f241db | 276 | } |
f94ea366 | 277 | |
c1e1601e | 278 | unit_add_to_dbus_queue(u); |
25ac040b LP |
279 | return 0; |
280 | ||
281 | fail: | |
ee5f3479 LP |
282 | log_warning("Failed to load device unit: %s", strerror(-r)); |
283 | ||
25ac040b LP |
284 | if (delete && u) |
285 | unit_free(u); | |
ee5f3479 | 286 | |
25ac040b LP |
287 | return r; |
288 | } | |
289 | ||
8fe914ec LP |
290 | static int device_process_new_device(Manager *m, struct udev_device *dev, bool update_state) { |
291 | const char *sysfs, *dn; | |
292 | struct udev_list_entry *item = NULL, *first = NULL; | |
293 | ||
294 | assert(m); | |
295 | ||
296 | if (!(sysfs = udev_device_get_syspath(dev))) | |
297 | return -ENOMEM; | |
298 | ||
299 | /* Add the main unit named after the sysfs path */ | |
300 | device_update_unit(m, dev, sysfs, true); | |
301 | ||
302 | /* Add an additional unit for the device node */ | |
303 | if ((dn = udev_device_get_devnode(dev))) | |
304 | device_update_unit(m, dev, dn, false); | |
305 | ||
306 | /* Add additional units for all symlinks */ | |
307 | first = udev_device_get_devlinks_list_entry(dev); | |
308 | udev_list_entry_foreach(item, first) { | |
309 | const char *p; | |
5845b46b | 310 | struct stat st; |
8fe914ec LP |
311 | |
312 | /* Don't bother with the /dev/block links */ | |
313 | p = udev_list_entry_get_name(item); | |
314 | ||
315 | if (path_startswith(p, "/dev/block/") || | |
316 | path_startswith(p, "/dev/char/")) | |
317 | continue; | |
318 | ||
5845b46b LP |
319 | /* Verify that the symlink in the FS actually belongs |
320 | * to this device. This is useful to deal with | |
321 | * conflicting devices, e.g. when two disks want the | |
322 | * same /dev/disk/by-label/xxx link because they have | |
323 | * the same label. We want to make sure that the same | |
324 | * device that won the symlink wins in systemd, so we | |
325 | * check the device node major/minor*/ | |
326 | if (stat(p, &st) >= 0) | |
327 | if ((!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode)) || | |
328 | st.st_rdev != udev_device_get_devnum(dev)) | |
329 | continue; | |
330 | ||
8fe914ec LP |
331 | device_update_unit(m, dev, p, false); |
332 | } | |
333 | ||
334 | if (update_state) { | |
335 | Device *d, *l; | |
336 | ||
337 | manager_dispatch_load_queue(m); | |
338 | ||
339 | l = hashmap_get(m->devices_by_sysfs, sysfs); | |
340 | LIST_FOREACH(same_sysfs, d, l) | |
341 | device_set_state(d, DEVICE_PLUGGED); | |
342 | } | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
f94ea366 | 347 | static int device_process_path(Manager *m, const char *path, bool update_state) { |
25ac040b LP |
348 | int r; |
349 | struct udev_device *dev; | |
350 | ||
351 | assert(m); | |
352 | assert(path); | |
353 | ||
354 | if (!(dev = udev_device_new_from_syspath(m->udev, path))) { | |
355 | log_warning("Failed to get udev device object from udev for path %s.", path); | |
356 | return -ENOMEM; | |
357 | } | |
358 | ||
f94ea366 | 359 | r = device_process_new_device(m, dev, update_state); |
25ac040b LP |
360 | udev_device_unref(dev); |
361 | return r; | |
362 | } | |
363 | ||
f94ea366 LP |
364 | static int device_process_removed_device(Manager *m, struct udev_device *dev) { |
365 | const char *sysfs; | |
f94ea366 LP |
366 | Device *d; |
367 | ||
368 | assert(m); | |
369 | assert(dev); | |
370 | ||
371 | if (!(sysfs = udev_device_get_syspath(dev))) | |
372 | return -ENOMEM; | |
373 | ||
8fe914ec LP |
374 | /* Remove all units of this sysfs path */ |
375 | while ((d = hashmap_get(m->devices_by_sysfs, sysfs))) { | |
376 | device_unset_sysfs(d); | |
377 | device_set_state(d, DEVICE_DEAD); | |
378 | } | |
f94ea366 | 379 | |
f94ea366 LP |
380 | return 0; |
381 | } | |
382 | ||
a7f241db LP |
383 | static Unit *device_following(Unit *u) { |
384 | Device *d = DEVICE(u); | |
385 | Device *other, *first = NULL; | |
386 | ||
387 | assert(d); | |
388 | ||
389 | if (startswith(u->meta.id, "sys-")) | |
390 | return NULL; | |
391 | ||
392 | /* Make everybody follow the unit that's named after the sysfs path */ | |
393 | for (other = d->same_sysfs_next; other; other = other->same_sysfs_next) | |
394 | if (startswith(other->meta.id, "sys-")) | |
395 | return UNIT(other); | |
396 | ||
397 | for (other = d->same_sysfs_prev; other; other = other->same_sysfs_prev) { | |
398 | if (startswith(other->meta.id, "sys-")) | |
399 | return UNIT(other); | |
400 | ||
401 | first = other; | |
402 | } | |
403 | ||
404 | return UNIT(first); | |
405 | } | |
406 | ||
6210e7fc LP |
407 | static int device_following_set(Unit *u, Set **_s) { |
408 | Device *d = DEVICE(u); | |
409 | Device *other; | |
410 | Set *s; | |
411 | int r; | |
412 | ||
413 | assert(d); | |
414 | assert(_s); | |
415 | ||
416 | if (!d->same_sysfs_prev && !d->same_sysfs_next) { | |
417 | *_s = NULL; | |
418 | return 0; | |
419 | } | |
420 | ||
421 | if (!(s = set_new(NULL, NULL))) | |
422 | return -ENOMEM; | |
423 | ||
424 | for (other = d->same_sysfs_next; other; other = other->same_sysfs_next) | |
425 | if ((r = set_put(s, other)) < 0) | |
426 | goto fail; | |
427 | ||
428 | for (other = d->same_sysfs_prev; other; other = other->same_sysfs_prev) | |
429 | if ((r = set_put(s, other)) < 0) | |
430 | goto fail; | |
431 | ||
432 | *_s = s; | |
433 | return 1; | |
434 | ||
435 | fail: | |
436 | set_free(s); | |
437 | return r; | |
438 | } | |
439 | ||
25ac040b LP |
440 | static void device_shutdown(Manager *m) { |
441 | assert(m); | |
442 | ||
a16e1123 | 443 | if (m->udev_monitor) { |
f94ea366 | 444 | udev_monitor_unref(m->udev_monitor); |
a16e1123 LP |
445 | m->udev_monitor = NULL; |
446 | } | |
f94ea366 | 447 | |
a16e1123 | 448 | if (m->udev) { |
25ac040b | 449 | udev_unref(m->udev); |
a16e1123 LP |
450 | m->udev = NULL; |
451 | } | |
8fe914ec LP |
452 | |
453 | hashmap_free(m->devices_by_sysfs); | |
454 | m->devices_by_sysfs = NULL; | |
25ac040b LP |
455 | } |
456 | ||
457 | static int device_enumerate(Manager *m) { | |
f94ea366 | 458 | struct epoll_event ev; |
25ac040b LP |
459 | int r; |
460 | struct udev_enumerate *e = NULL; | |
461 | struct udev_list_entry *item = NULL, *first = NULL; | |
462 | ||
463 | assert(m); | |
464 | ||
a16e1123 LP |
465 | if (!m->udev) { |
466 | if (!(m->udev = udev_new())) | |
467 | return -ENOMEM; | |
25ac040b | 468 | |
a16e1123 LP |
469 | if (!(m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev"))) { |
470 | r = -ENOMEM; | |
471 | goto fail; | |
472 | } | |
f94ea366 | 473 | |
47ae6e67 LP |
474 | /* This will fail if we are unprivileged, but that |
475 | * should not matter much, as user instances won't run | |
476 | * during boot. */ | |
477 | udev_monitor_set_receive_buffer_size(m->udev_monitor, 128*1024*1024); | |
99448c1f | 478 | |
e1ce2c27 LP |
479 | if (udev_monitor_filter_add_match_tag(m->udev_monitor, "systemd") < 0) { |
480 | r = -ENOMEM; | |
481 | goto fail; | |
482 | } | |
483 | ||
a16e1123 LP |
484 | if (udev_monitor_enable_receiving(m->udev_monitor) < 0) { |
485 | r = -EIO; | |
486 | goto fail; | |
487 | } | |
f94ea366 | 488 | |
a16e1123 LP |
489 | m->udev_watch.type = WATCH_UDEV; |
490 | m->udev_watch.fd = udev_monitor_get_fd(m->udev_monitor); | |
f94ea366 | 491 | |
a16e1123 LP |
492 | zero(ev); |
493 | ev.events = EPOLLIN; | |
494 | ev.data.ptr = &m->udev_watch; | |
f94ea366 | 495 | |
a16e1123 LP |
496 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->udev_watch.fd, &ev) < 0) |
497 | return -errno; | |
498 | } | |
f94ea366 | 499 | |
4f2d528d LP |
500 | if (!(e = udev_enumerate_new(m->udev))) { |
501 | r = -ENOMEM; | |
502 | goto fail; | |
503 | } | |
e1ce2c27 LP |
504 | if (udev_enumerate_add_match_tag(e, "systemd") < 0) { |
505 | r = -EIO; | |
506 | goto fail; | |
507 | } | |
25ac040b | 508 | |
4f2d528d LP |
509 | if (udev_enumerate_scan_devices(e) < 0) { |
510 | r = -EIO; | |
511 | goto fail; | |
512 | } | |
25ac040b | 513 | |
4f2d528d LP |
514 | first = udev_enumerate_get_list_entry(e); |
515 | udev_list_entry_foreach(item, first) | |
516 | device_process_path(m, udev_list_entry_get_name(item), false); | |
25ac040b | 517 | |
4f2d528d | 518 | udev_enumerate_unref(e); |
25ac040b LP |
519 | return 0; |
520 | ||
521 | fail: | |
522 | if (e) | |
523 | udev_enumerate_unref(e); | |
524 | ||
525 | device_shutdown(m); | |
526 | return r; | |
5cb5a6ff LP |
527 | } |
528 | ||
f94ea366 LP |
529 | void device_fd_event(Manager *m, int events) { |
530 | struct udev_device *dev; | |
531 | int r; | |
2958c886 | 532 | const char *action, *ready; |
f94ea366 LP |
533 | |
534 | assert(m); | |
99448c1f KS |
535 | |
536 | if (events != EPOLLIN) { | |
537 | static RATELIMIT_DEFINE(limit, 10*USEC_PER_SEC, 5); | |
538 | ||
539 | if (!ratelimit_test(&limit)) | |
540 | log_error("Failed to get udev event: %m"); | |
2e6081f2 KS |
541 | if (!(events & EPOLLIN)) |
542 | return; | |
99448c1f | 543 | } |
f94ea366 | 544 | |
f94ea366 | 545 | if (!(dev = udev_monitor_receive_device(m->udev_monitor))) { |
99448c1f KS |
546 | /* |
547 | * libudev might filter-out devices which pass the bloom filter, | |
35b8ca3a | 548 | * so getting NULL here is not necessarily an error |
99448c1f | 549 | */ |
f94ea366 LP |
550 | return; |
551 | } | |
552 | ||
553 | if (!(action = udev_device_get_action(dev))) { | |
554 | log_error("Failed to get udev action string."); | |
555 | goto fail; | |
556 | } | |
557 | ||
2958c886 LP |
558 | ready = udev_device_get_property_value(dev, "SYSTEMD_READY"); |
559 | ||
560 | if (streq(action, "remove") || (ready && parse_boolean(ready) == 0)) { | |
f94ea366 LP |
561 | if ((r = device_process_removed_device(m, dev)) < 0) { |
562 | log_error("Failed to process udev device event: %s", strerror(-r)); | |
563 | goto fail; | |
564 | } | |
565 | } else { | |
566 | if ((r = device_process_new_device(m, dev, true)) < 0) { | |
567 | log_error("Failed to process udev device event: %s", strerror(-r)); | |
568 | goto fail; | |
569 | } | |
570 | } | |
571 | ||
572 | fail: | |
573 | udev_device_unref(dev); | |
574 | } | |
575 | ||
a16e1123 LP |
576 | static const char* const device_state_table[_DEVICE_STATE_MAX] = { |
577 | [DEVICE_DEAD] = "dead", | |
73608ed9 | 578 | [DEVICE_PLUGGED] = "plugged" |
a16e1123 LP |
579 | }; |
580 | ||
581 | DEFINE_STRING_TABLE_LOOKUP(device_state, DeviceState); | |
582 | ||
87f0e418 | 583 | const UnitVTable device_vtable = { |
5cb5a6ff LP |
584 | .suffix = ".device", |
585 | ||
9e2f7c11 | 586 | .no_instances = true, |
41447faf | 587 | .no_snapshots = true, |
9e2f7c11 | 588 | |
faf919f1 LP |
589 | .init = device_init, |
590 | ||
e537352b | 591 | .load = unit_load_fragment_and_dropin_optional, |
034c6ed7 | 592 | .done = device_done, |
f50e0a01 LP |
593 | .coldplug = device_coldplug, |
594 | ||
5cb5a6ff LP |
595 | .dump = device_dump, |
596 | ||
f50e0a01 | 597 | .active_state = device_active_state, |
10a94420 | 598 | .sub_state_to_string = device_sub_state_to_string, |
25ac040b | 599 | |
c4e2ceae | 600 | .bus_interface = "org.freedesktop.systemd1.Device", |
4139c1b2 | 601 | .bus_message_handler = bus_device_message_handler, |
c4e2ceae | 602 | .bus_invalidating_properties = bus_device_invalidating_properties, |
4139c1b2 | 603 | |
a7f241db | 604 | .following = device_following, |
6210e7fc | 605 | .following_set = device_following_set, |
a7f241db | 606 | |
f50e0a01 LP |
607 | .enumerate = device_enumerate, |
608 | .shutdown = device_shutdown | |
5cb5a6ff | 609 | }; |