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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
a7334b09 LP |
6 | ***/ |
7 | ||
25ac040b | 8 | #include <errno.h> |
f94ea366 | 9 | #include <sys/epoll.h> |
25ac040b | 10 | |
b4bbcaa9 TA |
11 | #include "libudev.h" |
12 | ||
b5efdb8a | 13 | #include "alloc-util.h" |
4139c1b2 | 14 | #include "dbus-device.h" |
6bedfcbb | 15 | #include "device.h" |
07630cea | 16 | #include "log.h" |
6bedfcbb | 17 | #include "parse-util.h" |
9eb977db | 18 | #include "path-util.h" |
8fcde012 | 19 | #include "stat-util.h" |
07630cea LP |
20 | #include "string-util.h" |
21 | #include "swap.h" | |
718db961 | 22 | #include "udev-util.h" |
07630cea | 23 | #include "unit-name.h" |
9670d583 | 24 | #include "unit.h" |
5cb5a6ff | 25 | |
f50e0a01 LP |
26 | static const UnitActiveState state_translation_table[_DEVICE_STATE_MAX] = { |
27 | [DEVICE_DEAD] = UNIT_INACTIVE, | |
628c89cc LP |
28 | [DEVICE_TENTATIVE] = UNIT_ACTIVATING, |
29 | [DEVICE_PLUGGED] = UNIT_ACTIVE, | |
f50e0a01 LP |
30 | }; |
31 | ||
718db961 LP |
32 | static int device_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
33 | ||
8fe914ec | 34 | static void device_unset_sysfs(Device *d) { |
f1421cc6 | 35 | Hashmap *devices; |
8fe914ec LP |
36 | Device *first; |
37 | ||
38 | assert(d); | |
39 | ||
a7f241db LP |
40 | if (!d->sysfs) |
41 | return; | |
42 | ||
43 | /* Remove this unit from the chain of devices which share the | |
44 | * same sysfs path. */ | |
f1421cc6 LP |
45 | devices = UNIT(d)->manager->devices_by_sysfs; |
46 | first = hashmap_get(devices, d->sysfs); | |
71fda00f | 47 | LIST_REMOVE(same_sysfs, first, d); |
8fe914ec | 48 | |
a7f241db | 49 | if (first) |
f1421cc6 | 50 | hashmap_remove_and_replace(devices, d->sysfs, first->sysfs, first); |
a7f241db | 51 | else |
f1421cc6 | 52 | hashmap_remove(devices, d->sysfs); |
a7f241db | 53 | |
a1e58e8e | 54 | d->sysfs = mfree(d->sysfs); |
8fe914ec LP |
55 | } |
56 | ||
628c89cc LP |
57 | static int device_set_sysfs(Device *d, const char *sysfs) { |
58 | Device *first; | |
59 | char *copy; | |
60 | int r; | |
61 | ||
62 | assert(d); | |
63 | ||
64 | if (streq_ptr(d->sysfs, sysfs)) | |
65 | return 0; | |
66 | ||
548f6937 | 67 | r = hashmap_ensure_allocated(&UNIT(d)->manager->devices_by_sysfs, &path_hash_ops); |
628c89cc LP |
68 | if (r < 0) |
69 | return r; | |
70 | ||
71 | copy = strdup(sysfs); | |
72 | if (!copy) | |
73 | return -ENOMEM; | |
74 | ||
75 | device_unset_sysfs(d); | |
76 | ||
77 | first = hashmap_get(UNIT(d)->manager->devices_by_sysfs, sysfs); | |
78 | LIST_PREPEND(same_sysfs, first, d); | |
79 | ||
80 | r = hashmap_replace(UNIT(d)->manager->devices_by_sysfs, copy, first); | |
81 | if (r < 0) { | |
82 | LIST_REMOVE(same_sysfs, first, d); | |
83 | free(copy); | |
84 | return r; | |
85 | } | |
86 | ||
87 | d->sysfs = copy; | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
faf919f1 LP |
92 | static void device_init(Unit *u) { |
93 | Device *d = DEVICE(u); | |
94 | ||
95 | assert(d); | |
1124fe6f | 96 | assert(UNIT(d)->load_state == UNIT_STUB); |
faf919f1 | 97 | |
8fe914ec LP |
98 | /* In contrast to all other unit types we timeout jobs waiting |
99 | * for devices by default. This is because they otherwise wait | |
35b8ca3a | 100 | * indefinitely for plugged in devices, something which cannot |
8fe914ec LP |
101 | * happen for the other units since their operations time out |
102 | * anyway. */ | |
d9732d78 | 103 | u->job_running_timeout = u->manager->default_timeout_start_usec; |
c8f4d764 | 104 | |
f1421cc6 | 105 | u->ignore_on_isolate = true; |
faf919f1 LP |
106 | } |
107 | ||
87f0e418 LP |
108 | static void device_done(Unit *u) { |
109 | Device *d = DEVICE(u); | |
034c6ed7 LP |
110 | |
111 | assert(d); | |
e537352b | 112 | |
8fe914ec | 113 | device_unset_sysfs(d); |
e537352b LP |
114 | } |
115 | ||
f50e0a01 LP |
116 | static void device_set_state(Device *d, DeviceState state) { |
117 | DeviceState old_state; | |
118 | assert(d); | |
5cb5a6ff | 119 | |
f50e0a01 LP |
120 | old_state = d->state; |
121 | d->state = state; | |
5cb5a6ff | 122 | |
e537352b | 123 | if (state != old_state) |
f2341e0a | 124 | log_unit_debug(UNIT(d), "Changed %s -> %s", device_state_to_string(old_state), device_state_to_string(state)); |
f50e0a01 | 125 | |
e2f3b44c | 126 | unit_notify(UNIT(d), state_translation_table[old_state], state_translation_table[state], true); |
f50e0a01 LP |
127 | } |
128 | ||
be847e82 | 129 | static int device_coldplug(Unit *u) { |
f50e0a01 LP |
130 | Device *d = DEVICE(u); |
131 | ||
132 | assert(d); | |
133 | assert(d->state == DEVICE_DEAD); | |
134 | ||
918e6f1c FB |
135 | /* This should happen only when we reexecute PID1 from an old version |
136 | * which didn't serialize d->found. In this case simply assume that the | |
137 | * device was in plugged state right before we started reexecuting which | |
138 | * might be a wrong assumption. */ | |
139 | if (d->found == DEVICE_FOUND_UDEV_DB) | |
140 | d->found = DEVICE_FOUND_UDEV; | |
141 | ||
628c89cc LP |
142 | if (d->found & DEVICE_FOUND_UDEV) |
143 | /* If udev says the device is around, it's around */ | |
73608ed9 | 144 | device_set_state(d, DEVICE_PLUGGED); |
f6200941 | 145 | else if (d->found != DEVICE_NOT_FOUND && d->deserialized_state != DEVICE_PLUGGED) |
628c89cc | 146 | /* If a device is found in /proc/self/mountinfo or |
f6200941 LP |
147 | * /proc/swaps, and was not yet announced via udev, |
148 | * it's "tentatively" around. */ | |
628c89cc | 149 | device_set_state(d, DEVICE_TENTATIVE); |
f50e0a01 LP |
150 | |
151 | return 0; | |
152 | } | |
153 | ||
75d0aba4 YW |
154 | static const struct { |
155 | DeviceFound flag; | |
156 | const char *name; | |
157 | } device_found_map[] = { | |
158 | { DEVICE_FOUND_UDEV, "found-udev" }, | |
159 | { DEVICE_FOUND_UDEV_DB, "found-udev-db" }, | |
160 | { DEVICE_FOUND_MOUNT, "found-mount" }, | |
161 | { DEVICE_FOUND_SWAP, "found-swap" }, | |
162 | {} | |
163 | }; | |
164 | ||
165 | static int device_found_to_string_many(DeviceFound flags, char **ret) { | |
166 | _cleanup_free_ char *s = NULL; | |
167 | unsigned i; | |
168 | ||
169 | assert(ret); | |
170 | ||
171 | for (i = 0; device_found_map[i].name; i++) { | |
172 | if ((flags & device_found_map[i].flag) != device_found_map[i].flag) | |
173 | continue; | |
174 | ||
175 | if (!strextend_with_separator(&s, ",", device_found_map[i].name, NULL)) | |
176 | return -ENOMEM; | |
177 | } | |
178 | ||
179 | *ret = TAKE_PTR(s); | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
184 | static int device_found_from_string_many(const char *name, DeviceFound *ret) { | |
185 | DeviceFound flags = 0; | |
186 | int r; | |
187 | ||
188 | assert(ret); | |
189 | ||
190 | for (;;) { | |
191 | _cleanup_free_ char *word = NULL; | |
192 | DeviceFound f = 0; | |
193 | unsigned i; | |
194 | ||
195 | r = extract_first_word(&name, &word, ",", 0); | |
196 | if (r < 0) | |
197 | return r; | |
198 | if (r == 0) | |
199 | break; | |
200 | ||
201 | for (i = 0; device_found_map[i].name; i++) | |
202 | if (streq(word, device_found_map[i].name)) { | |
203 | f = device_found_map[i].flag; | |
204 | break; | |
205 | } | |
206 | ||
207 | if (f == 0) | |
208 | return -EINVAL; | |
209 | ||
210 | flags |= f; | |
211 | } | |
212 | ||
213 | *ret = flags; | |
214 | return 0; | |
215 | } | |
216 | ||
f6200941 | 217 | static int device_serialize(Unit *u, FILE *f, FDSet *fds) { |
75d0aba4 | 218 | _cleanup_free_ char *s = NULL; |
f6200941 LP |
219 | Device *d = DEVICE(u); |
220 | ||
221 | assert(u); | |
222 | assert(f); | |
223 | assert(fds); | |
224 | ||
225 | unit_serialize_item(u, f, "state", device_state_to_string(d->state)); | |
75d0aba4 YW |
226 | |
227 | (void) device_found_to_string_many(d->found, &s); | |
228 | unit_serialize_item(u, f, "found", s); | |
0108f6ec DM |
229 | |
230 | return 0; | |
f6200941 LP |
231 | } |
232 | ||
233 | static int device_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
234 | Device *d = DEVICE(u); | |
75d0aba4 | 235 | int r; |
f6200941 LP |
236 | |
237 | assert(u); | |
238 | assert(key); | |
239 | assert(value); | |
240 | assert(fds); | |
241 | ||
036d2eef FB |
242 | /* The device was known at the time units were serialized but it's not |
243 | * anymore at the time units are deserialized. This happens when PID1 is | |
244 | * re-executed after having switched to the new rootfs: devices were | |
245 | * enumerated but udevd wasn't running yet thus the list of devices | |
246 | * (handled by systemd) to initialize was empty. In such case we wait | |
247 | * for the device events to be re-triggered by udev so device units are | |
248 | * properly re-initialized. */ | |
249 | if (d->found == DEVICE_NOT_FOUND) { | |
250 | assert(d->sysfs == NULL); | |
251 | return 0; | |
252 | } | |
253 | ||
f6200941 LP |
254 | if (streq(key, "state")) { |
255 | DeviceState state; | |
256 | ||
257 | state = device_state_from_string(value); | |
258 | if (state < 0) | |
f2341e0a | 259 | log_unit_debug(u, "Failed to parse state value: %s", value); |
f6200941 LP |
260 | else |
261 | d->deserialized_state = state; | |
918e6f1c FB |
262 | |
263 | } else if (streq(key, "found")) { | |
75d0aba4 YW |
264 | r = device_found_from_string_many(value, &d->found); |
265 | if (r < 0) | |
918e6f1c | 266 | log_unit_debug(u, "Failed to parse found value: %s", value); |
918e6f1c | 267 | |
f6200941 | 268 | } else |
f2341e0a | 269 | log_unit_debug(u, "Unknown serialization key: %s", key); |
f6200941 LP |
270 | |
271 | return 0; | |
272 | } | |
273 | ||
f50e0a01 | 274 | static void device_dump(Unit *u, FILE *f, const char *prefix) { |
25ac040b | 275 | Device *d = DEVICE(u); |
4d86c235 | 276 | _cleanup_free_ char *s = NULL; |
5cb5a6ff | 277 | |
25ac040b | 278 | assert(d); |
5cb5a6ff | 279 | |
4d86c235 ZJS |
280 | (void) device_found_to_string_many(d->found, &s); |
281 | ||
5cb5a6ff | 282 | fprintf(f, |
25ac040b | 283 | "%sDevice State: %s\n" |
4d86c235 ZJS |
284 | "%sSysfs Path: %s\n" |
285 | "%sFound: %s\n", | |
a16e1123 | 286 | prefix, device_state_to_string(d->state), |
4d86c235 ZJS |
287 | prefix, strna(d->sysfs), |
288 | prefix, strna(s)); | |
f50e0a01 LP |
289 | } |
290 | ||
44a6b1b6 | 291 | _pure_ static UnitActiveState device_active_state(Unit *u) { |
f50e0a01 LP |
292 | assert(u); |
293 | ||
294 | return state_translation_table[DEVICE(u)->state]; | |
25ac040b LP |
295 | } |
296 | ||
44a6b1b6 | 297 | _pure_ static const char *device_sub_state_to_string(Unit *u) { |
10a94420 LP |
298 | assert(u); |
299 | ||
a16e1123 | 300 | return device_state_to_string(DEVICE(u)->state); |
10a94420 LP |
301 | } |
302 | ||
628c89cc | 303 | static int device_update_description(Unit *u, struct udev_device *dev, const char *path) { |
965e5c5d | 304 | const char *model; |
628c89cc | 305 | int r; |
965e5c5d LP |
306 | |
307 | assert(u); | |
308 | assert(dev); | |
309 | assert(path); | |
310 | ||
311 | model = udev_device_get_property_value(dev, "ID_MODEL_FROM_DATABASE"); | |
312 | if (!model) | |
313 | model = udev_device_get_property_value(dev, "ID_MODEL"); | |
314 | ||
315 | if (model) { | |
316 | const char *label; | |
317 | ||
318 | /* Try to concatenate the device model string with a label, if there is one */ | |
319 | label = udev_device_get_property_value(dev, "ID_FS_LABEL"); | |
320 | if (!label) | |
321 | label = udev_device_get_property_value(dev, "ID_PART_ENTRY_NAME"); | |
322 | if (!label) | |
323 | label = udev_device_get_property_value(dev, "ID_PART_ENTRY_NUMBER"); | |
324 | ||
325 | if (label) { | |
326 | _cleanup_free_ char *j; | |
327 | ||
605405c6 | 328 | j = strjoin(model, " ", label); |
965e5c5d | 329 | if (j) |
628c89cc | 330 | r = unit_set_description(u, j); |
c43b2132 TA |
331 | else |
332 | r = -ENOMEM; | |
628c89cc LP |
333 | } else |
334 | r = unit_set_description(u, model); | |
335 | } else | |
336 | r = unit_set_description(u, path); | |
965e5c5d | 337 | |
628c89cc | 338 | if (r < 0) |
f2341e0a | 339 | log_unit_error_errno(u, r, "Failed to set device description: %m"); |
965e5c5d | 340 | |
628c89cc | 341 | return r; |
965e5c5d LP |
342 | } |
343 | ||
344 | static int device_add_udev_wants(Unit *u, struct udev_device *dev) { | |
de040543 | 345 | const char *wants, *property; |
965e5c5d LP |
346 | int r; |
347 | ||
348 | assert(u); | |
349 | assert(dev); | |
350 | ||
463d0d15 | 351 | property = MANAGER_IS_USER(u->manager) ? "SYSTEMD_USER_WANTS" : "SYSTEMD_WANTS"; |
de040543 | 352 | |
b2fadec6 | 353 | wants = udev_device_get_property_value(dev, property); |
de040543 LP |
354 | if (!wants) |
355 | return 0; | |
356 | ||
357 | for (;;) { | |
ceed8f0c | 358 | _cleanup_free_ char *word = NULL, *k = NULL; |
965e5c5d | 359 | |
de040543 | 360 | r = extract_first_word(&wants, &word, NULL, EXTRACT_QUOTES); |
ceed8f0c ZJS |
361 | if (r == 0) |
362 | return 0; | |
363 | if (r == -ENOMEM) | |
364 | return log_oom(); | |
365 | if (r < 0) | |
dcebc9ba | 366 | return log_unit_error_errno(u, r, "Failed to parse property %s with value %s: %m", property, wants); |
965e5c5d | 367 | |
dcebc9ba LP |
368 | if (unit_name_is_valid(word, UNIT_NAME_TEMPLATE) && DEVICE(u)->sysfs) { |
369 | _cleanup_free_ char *escaped = NULL; | |
370 | ||
371 | /* If the unit name is specified as template, then automatically fill in the sysfs path of the | |
372 | * device as instance name, properly escaped. */ | |
373 | ||
374 | r = unit_name_path_escape(DEVICE(u)->sysfs, &escaped); | |
375 | if (r < 0) | |
376 | return log_unit_error_errno(u, r, "Failed to escape %s: %m", DEVICE(u)->sysfs); | |
377 | ||
378 | r = unit_name_replace_instance(word, escaped, &k); | |
379 | if (r < 0) | |
380 | return log_unit_error_errno(u, r, "Failed to build %s instance of template %s: %m", escaped, word); | |
381 | } else { | |
382 | /* If this is not a template, then let's mangle it so, that it becomes a valid unit name. */ | |
383 | ||
37cbc1d5 | 384 | r = unit_name_mangle(word, UNIT_NAME_MANGLE_WARN, &k); |
dcebc9ba LP |
385 | if (r < 0) |
386 | return log_unit_error_errno(u, r, "Failed to mangle unit name \"%s\": %m", word); | |
387 | } | |
965e5c5d | 388 | |
eef85c4a | 389 | r = unit_add_dependency_by_name(u, UNIT_WANTS, k, NULL, true, UNIT_DEPENDENCY_UDEV); |
965e5c5d | 390 | if (r < 0) |
de040543 | 391 | return log_unit_error_errno(u, r, "Failed to add Wants= dependency: %m"); |
965e5c5d | 392 | } |
965e5c5d LP |
393 | } |
394 | ||
40b1a32c | 395 | static bool device_is_bound_by_mounts(Device *d, struct udev_device *dev) { |
ebc8968b | 396 | const char *bound_by; |
40b1a32c | 397 | int r; |
ebc8968b FB |
398 | |
399 | assert(d); | |
400 | assert(dev); | |
401 | ||
402 | bound_by = udev_device_get_property_value(dev, "SYSTEMD_MOUNT_DEVICE_BOUND"); | |
40b1a32c LP |
403 | if (bound_by) { |
404 | r = parse_boolean(bound_by); | |
405 | if (r < 0) | |
406 | log_warning_errno(r, "Failed to parse SYSTEMD_MOUNT_DEVICE_BOUND='%s' udev property of %s, ignoring: %m", bound_by, strna(d->sysfs)); | |
ebc8968b | 407 | |
40b1a32c LP |
408 | d->bind_mounts = r > 0; |
409 | } else | |
410 | d->bind_mounts = false; | |
411 | ||
412 | return d->bind_mounts; | |
ebc8968b FB |
413 | } |
414 | ||
415 | static int device_upgrade_mount_deps(Unit *u) { | |
416 | Unit *other; | |
417 | Iterator i; | |
eef85c4a | 418 | void *v; |
ebc8968b FB |
419 | int r; |
420 | ||
eef85c4a LP |
421 | /* Let's upgrade Requires= to BindsTo= on us. (Used when SYSTEMD_MOUNT_DEVICE_BOUND is set) */ |
422 | ||
423 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REQUIRED_BY], i) { | |
ebc8968b FB |
424 | if (other->type != UNIT_MOUNT) |
425 | continue; | |
426 | ||
eef85c4a | 427 | r = unit_add_dependency(other, UNIT_BINDS_TO, u, true, UNIT_DEPENDENCY_UDEV); |
ebc8968b FB |
428 | if (r < 0) |
429 | return r; | |
430 | } | |
431 | return 0; | |
432 | } | |
433 | ||
628c89cc LP |
434 | static int device_setup_unit(Manager *m, struct udev_device *dev, const char *path, bool main) { |
435 | _cleanup_free_ char *e = NULL; | |
2005219f | 436 | const char *sysfs = NULL; |
25ac040b | 437 | Unit *u = NULL; |
25ac040b | 438 | bool delete; |
965e5c5d | 439 | int r; |
25ac040b LP |
440 | |
441 | assert(m); | |
965e5c5d | 442 | assert(path); |
25ac040b | 443 | |
2005219f MP |
444 | if (dev) { |
445 | sysfs = udev_device_get_syspath(dev); | |
446 | if (!sysfs) | |
447 | return 0; | |
448 | } | |
7f275a9f | 449 | |
7410616c LP |
450 | r = unit_name_from_path(path, ".device", &e); |
451 | if (r < 0) | |
7f629b74 | 452 | return log_error_errno(r, "Failed to generate unit name from device path: %m"); |
628c89cc LP |
453 | |
454 | u = manager_get_unit(m, e); | |
38b9b72e LP |
455 | if (u) { |
456 | /* The device unit can still be present even if the device was unplugged: a mount unit can reference it hence | |
457 | * preventing the GC to have garbaged it. That's desired since the device unit may have a dependency on the | |
458 | * mount unit which was added during the loading of the later. */ | |
459 | if (dev && DEVICE(u)->state == DEVICE_PLUGGED) { | |
460 | ||
461 | /* This unit is in plugged state: we're sure it's attached to a device. */ | |
462 | if (!path_equal(DEVICE(u)->sysfs, sysfs)) { | |
463 | log_unit_debug(u, "Dev %s appeared twice with different sysfs paths %s and %s", | |
464 | e, DEVICE(u)->sysfs, sysfs); | |
465 | return -EEXIST; | |
466 | } | |
ac9d396b | 467 | } |
25ac040b | 468 | |
38b9b72e LP |
469 | delete = false; |
470 | ||
471 | /* Let's remove all dependencies generated due to udev properties. We'll readd whatever is configured | |
472 | * now below. */ | |
473 | unit_remove_dependencies(u, UNIT_DEPENDENCY_UDEV); | |
474 | } else { | |
aab14b13 LP |
475 | delete = true; |
476 | ||
a581e45a | 477 | r = unit_new_for_name(m, sizeof(Device), e, &u); |
7d17cfbc | 478 | if (r < 0) |
25ac040b LP |
479 | goto fail; |
480 | ||
ee6cb288 | 481 | unit_add_to_load_queue(u); |
38b9b72e | 482 | } |
ee6cb288 LP |
483 | |
484 | /* If this was created via some dependency and has not | |
485 | * actually been seen yet ->sysfs will not be | |
486 | * initialized. Hence initialize it if necessary. */ | |
2005219f MP |
487 | if (sysfs) { |
488 | r = device_set_sysfs(DEVICE(u), sysfs); | |
489 | if (r < 0) | |
490 | goto fail; | |
ee6cb288 | 491 | |
2005219f | 492 | (void) device_update_description(u, dev, path); |
aab14b13 | 493 | |
2005219f MP |
494 | /* The additional systemd udev properties we only interpret |
495 | * for the main object */ | |
496 | if (main) | |
497 | (void) device_add_udev_wants(u, dev); | |
498 | } | |
25ac040b | 499 | |
eef85c4a LP |
500 | /* So the user wants the mount units to be bound to the device but a mount unit might has been seen by systemd |
501 | * before the device appears on its radar. In this case the device unit is partially initialized and includes | |
502 | * the deps on the mount unit but at that time the "bind mounts" flag wasn't not present. Fix this up now. */ | |
40b1a32c | 503 | if (dev && device_is_bound_by_mounts(DEVICE(u), dev)) |
ebc8968b | 504 | device_upgrade_mount_deps(u); |
f94ea366 | 505 | |
38b9b72e | 506 | /* Note that this won't dispatch the load queue, the caller has to do that if needed and appropriate */ |
f1421cc6 | 507 | |
c1e1601e | 508 | unit_add_to_dbus_queue(u); |
25ac040b LP |
509 | return 0; |
510 | ||
511 | fail: | |
f2341e0a | 512 | log_unit_warning_errno(u, r, "Failed to set up device unit: %m"); |
ee5f3479 | 513 | |
c9d5c9c0 | 514 | if (delete) |
25ac040b | 515 | unit_free(u); |
ee5f3479 | 516 | |
25ac040b LP |
517 | return r; |
518 | } | |
519 | ||
628c89cc | 520 | static int device_process_new(Manager *m, struct udev_device *dev) { |
f1421cc6 | 521 | const char *sysfs, *dn, *alias; |
8fe914ec | 522 | struct udev_list_entry *item = NULL, *first = NULL; |
003ac9d0 | 523 | int r; |
8fe914ec LP |
524 | |
525 | assert(m); | |
526 | ||
718db961 LP |
527 | sysfs = udev_device_get_syspath(dev); |
528 | if (!sysfs) | |
f1421cc6 | 529 | return 0; |
8fe914ec LP |
530 | |
531 | /* Add the main unit named after the sysfs path */ | |
628c89cc | 532 | r = device_setup_unit(m, dev, sysfs, true); |
003ac9d0 HH |
533 | if (r < 0) |
534 | return r; | |
8fe914ec LP |
535 | |
536 | /* Add an additional unit for the device node */ | |
f1421cc6 LP |
537 | dn = udev_device_get_devnode(dev); |
538 | if (dn) | |
628c89cc | 539 | (void) device_setup_unit(m, dev, dn, false); |
8fe914ec LP |
540 | |
541 | /* Add additional units for all symlinks */ | |
542 | first = udev_device_get_devlinks_list_entry(dev); | |
543 | udev_list_entry_foreach(item, first) { | |
544 | const char *p; | |
5845b46b | 545 | struct stat st; |
8fe914ec LP |
546 | |
547 | /* Don't bother with the /dev/block links */ | |
548 | p = udev_list_entry_get_name(item); | |
549 | ||
550 | if (path_startswith(p, "/dev/block/") || | |
551 | path_startswith(p, "/dev/char/")) | |
552 | continue; | |
553 | ||
5845b46b LP |
554 | /* Verify that the symlink in the FS actually belongs |
555 | * to this device. This is useful to deal with | |
556 | * conflicting devices, e.g. when two disks want the | |
557 | * same /dev/disk/by-label/xxx link because they have | |
558 | * the same label. We want to make sure that the same | |
559 | * device that won the symlink wins in systemd, so we | |
ee33e53a | 560 | * check the device node major/minor */ |
5845b46b LP |
561 | if (stat(p, &st) >= 0) |
562 | if ((!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode)) || | |
563 | st.st_rdev != udev_device_get_devnum(dev)) | |
564 | continue; | |
565 | ||
628c89cc | 566 | (void) device_setup_unit(m, dev, p, false); |
8fe914ec LP |
567 | } |
568 | ||
f1421cc6 LP |
569 | /* Add additional units for all explicitly configured |
570 | * aliases */ | |
571 | alias = udev_device_get_property_value(dev, "SYSTEMD_ALIAS"); | |
ceed8f0c | 572 | for (;;) { |
8fb242ab | 573 | _cleanup_free_ char *word = NULL; |
8fe914ec | 574 | |
ceed8f0c ZJS |
575 | r = extract_first_word(&alias, &word, NULL, EXTRACT_QUOTES); |
576 | if (r == 0) | |
577 | return 0; | |
578 | if (r == -ENOMEM) | |
579 | return log_oom(); | |
580 | if (r < 0) | |
581 | return log_warning_errno(r, "Failed to add parse SYSTEMD_ALIAS for %s: %m", sysfs); | |
f1421cc6 | 582 | |
ceed8f0c ZJS |
583 | if (path_is_absolute(word)) |
584 | (void) device_setup_unit(m, dev, word, false); | |
585 | else | |
586 | log_warning("SYSTEMD_ALIAS for %s is not an absolute path, ignoring: %s", sysfs, word); | |
8fe914ec | 587 | } |
8fe914ec LP |
588 | } |
589 | ||
628c89cc | 590 | static void device_update_found_one(Device *d, bool add, DeviceFound found, bool now) { |
f6200941 | 591 | DeviceFound n, previous; |
628c89cc LP |
592 | |
593 | assert(d); | |
594 | ||
595 | n = add ? (d->found | found) : (d->found & ~found); | |
596 | if (n == d->found) | |
597 | return; | |
598 | ||
f6200941 | 599 | previous = d->found; |
628c89cc LP |
600 | d->found = n; |
601 | ||
f6200941 LP |
602 | if (!now) |
603 | return; | |
604 | ||
4b58153d LP |
605 | /* Didn't exist before, but does now? if so, generate a new invocation ID for it */ |
606 | if (previous == DEVICE_NOT_FOUND && d->found != DEVICE_NOT_FOUND) | |
607 | (void) unit_acquire_invocation_id(UNIT(d)); | |
608 | ||
f6200941 LP |
609 | if (d->found & DEVICE_FOUND_UDEV) |
610 | /* When the device is known to udev we consider it | |
611 | * plugged. */ | |
612 | device_set_state(d, DEVICE_PLUGGED); | |
613 | else if (d->found != DEVICE_NOT_FOUND && (previous & DEVICE_FOUND_UDEV) == 0) | |
614 | /* If the device has not been seen by udev yet, but is | |
615 | * now referenced by the kernel, then we assume the | |
616 | * kernel knows it now, and udev might soon too. */ | |
617 | device_set_state(d, DEVICE_TENTATIVE); | |
05e33aa1 | 618 | else { |
f6200941 LP |
619 | /* If nobody sees the device, or if the device was |
620 | * previously seen by udev and now is only referenced | |
621 | * from the kernel, then we consider the device is | |
622 | * gone, the kernel just hasn't noticed it yet. */ | |
05e33aa1 | 623 | |
f6200941 | 624 | device_set_state(d, DEVICE_DEAD); |
05e33aa1 MS |
625 | device_unset_sysfs(d); |
626 | } | |
627 | ||
628c89cc LP |
628 | } |
629 | ||
630 | static int device_update_found_by_sysfs(Manager *m, const char *sysfs, bool add, DeviceFound found, bool now) { | |
cc0df6cc | 631 | Device *d, *l, *n; |
25ac040b LP |
632 | |
633 | assert(m); | |
628c89cc | 634 | assert(sysfs); |
25ac040b | 635 | |
628c89cc LP |
636 | if (found == DEVICE_NOT_FOUND) |
637 | return 0; | |
25ac040b | 638 | |
f1421cc6 | 639 | l = hashmap_get(m->devices_by_sysfs, sysfs); |
cc0df6cc | 640 | LIST_FOREACH_SAFE(same_sysfs, d, n, l) |
628c89cc LP |
641 | device_update_found_one(d, add, found, now); |
642 | ||
643 | return 0; | |
25ac040b LP |
644 | } |
645 | ||
628c89cc LP |
646 | static int device_update_found_by_name(Manager *m, const char *path, bool add, DeviceFound found, bool now) { |
647 | _cleanup_free_ char *e = NULL; | |
648 | Unit *u; | |
7410616c | 649 | int r; |
f94ea366 LP |
650 | |
651 | assert(m); | |
628c89cc | 652 | assert(path); |
f94ea366 | 653 | |
628c89cc LP |
654 | if (found == DEVICE_NOT_FOUND) |
655 | return 0; | |
f94ea366 | 656 | |
7410616c LP |
657 | r = unit_name_from_path(path, ".device", &e); |
658 | if (r < 0) | |
659 | return log_error_errno(r, "Failed to generate unit name from device path: %m"); | |
f94ea366 | 660 | |
628c89cc LP |
661 | u = manager_get_unit(m, e); |
662 | if (!u) | |
663 | return 0; | |
664 | ||
665 | device_update_found_one(DEVICE(u), add, found, now); | |
f94ea366 LP |
666 | return 0; |
667 | } | |
668 | ||
f1421cc6 LP |
669 | static bool device_is_ready(struct udev_device *dev) { |
670 | const char *ready; | |
671 | ||
672 | assert(dev); | |
673 | ||
674 | ready = udev_device_get_property_value(dev, "SYSTEMD_READY"); | |
675 | if (!ready) | |
676 | return true; | |
677 | ||
678 | return parse_boolean(ready) != 0; | |
679 | } | |
680 | ||
a7f241db LP |
681 | static Unit *device_following(Unit *u) { |
682 | Device *d = DEVICE(u); | |
683 | Device *other, *first = NULL; | |
684 | ||
685 | assert(d); | |
686 | ||
ac155bb8 | 687 | if (startswith(u->id, "sys-")) |
a7f241db LP |
688 | return NULL; |
689 | ||
690 | /* Make everybody follow the unit that's named after the sysfs path */ | |
691 | for (other = d->same_sysfs_next; other; other = other->same_sysfs_next) | |
1124fe6f | 692 | if (startswith(UNIT(other)->id, "sys-")) |
a7f241db LP |
693 | return UNIT(other); |
694 | ||
695 | for (other = d->same_sysfs_prev; other; other = other->same_sysfs_prev) { | |
1124fe6f | 696 | if (startswith(UNIT(other)->id, "sys-")) |
a7f241db LP |
697 | return UNIT(other); |
698 | ||
699 | first = other; | |
700 | } | |
701 | ||
702 | return UNIT(first); | |
703 | } | |
704 | ||
f1421cc6 LP |
705 | static int device_following_set(Unit *u, Set **_set) { |
706 | Device *d = DEVICE(u), *other; | |
95f14a3e | 707 | _cleanup_(set_freep) Set *set = NULL; |
6210e7fc LP |
708 | int r; |
709 | ||
710 | assert(d); | |
f1421cc6 | 711 | assert(_set); |
6210e7fc | 712 | |
f1421cc6 LP |
713 | if (LIST_JUST_US(same_sysfs, d)) { |
714 | *_set = NULL; | |
6210e7fc LP |
715 | return 0; |
716 | } | |
717 | ||
d5099efc | 718 | set = set_new(NULL); |
f1421cc6 | 719 | if (!set) |
6210e7fc LP |
720 | return -ENOMEM; |
721 | ||
f1421cc6 LP |
722 | LIST_FOREACH_AFTER(same_sysfs, other, d) { |
723 | r = set_put(set, other); | |
724 | if (r < 0) | |
95f14a3e | 725 | return r; |
f1421cc6 | 726 | } |
6210e7fc | 727 | |
f1421cc6 LP |
728 | LIST_FOREACH_BEFORE(same_sysfs, other, d) { |
729 | r = set_put(set, other); | |
730 | if (r < 0) | |
95f14a3e | 731 | return r; |
f1421cc6 | 732 | } |
6210e7fc | 733 | |
95f14a3e | 734 | *_set = TAKE_PTR(set); |
6210e7fc | 735 | return 1; |
6210e7fc LP |
736 | } |
737 | ||
25ac040b LP |
738 | static void device_shutdown(Manager *m) { |
739 | assert(m); | |
740 | ||
718db961 | 741 | m->udev_event_source = sd_event_source_unref(m->udev_event_source); |
66f57304 | 742 | m->udev_monitor = udev_monitor_unref(m->udev_monitor); |
525d3cc7 | 743 | m->devices_by_sysfs = hashmap_free(m->devices_by_sysfs); |
25ac040b LP |
744 | } |
745 | ||
ba64af90 | 746 | static void device_enumerate(Manager *m) { |
8e766630 | 747 | _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL; |
25ac040b | 748 | struct udev_list_entry *item = NULL, *first = NULL; |
718db961 | 749 | int r; |
25ac040b LP |
750 | |
751 | assert(m); | |
752 | ||
9670d583 | 753 | if (!m->udev_monitor) { |
718db961 LP |
754 | m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev"); |
755 | if (!m->udev_monitor) { | |
ba64af90 | 756 | log_oom(); |
a16e1123 LP |
757 | goto fail; |
758 | } | |
f94ea366 | 759 | |
47ae6e67 LP |
760 | /* This will fail if we are unprivileged, but that |
761 | * should not matter much, as user instances won't run | |
762 | * during boot. */ | |
8fa158e7 | 763 | (void) udev_monitor_set_receive_buffer_size(m->udev_monitor, 128*1024*1024); |
99448c1f | 764 | |
718db961 | 765 | r = udev_monitor_filter_add_match_tag(m->udev_monitor, "systemd"); |
ba64af90 LP |
766 | if (r < 0) { |
767 | log_error_errno(r, "Failed to add udev tag match: %m"); | |
e1ce2c27 | 768 | goto fail; |
ba64af90 | 769 | } |
e1ce2c27 | 770 | |
718db961 | 771 | r = udev_monitor_enable_receiving(m->udev_monitor); |
ba64af90 LP |
772 | if (r < 0) { |
773 | log_error_errno(r, "Failed to enable udev event reception: %m"); | |
a16e1123 | 774 | goto fail; |
ba64af90 | 775 | } |
f94ea366 | 776 | |
151b9b96 | 777 | r = sd_event_add_io(m->event, &m->udev_event_source, udev_monitor_get_fd(m->udev_monitor), EPOLLIN, device_dispatch_io, m); |
ba64af90 LP |
778 | if (r < 0) { |
779 | log_error_errno(r, "Failed to watch udev file descriptor: %m"); | |
718db961 | 780 | goto fail; |
ba64af90 | 781 | } |
7dfbe2e3 TG |
782 | |
783 | (void) sd_event_source_set_description(m->udev_event_source, "device"); | |
a16e1123 | 784 | } |
f94ea366 | 785 | |
718db961 LP |
786 | e = udev_enumerate_new(m->udev); |
787 | if (!e) { | |
ba64af90 | 788 | log_oom(); |
4f2d528d LP |
789 | goto fail; |
790 | } | |
718db961 LP |
791 | |
792 | r = udev_enumerate_add_match_tag(e, "systemd"); | |
ba64af90 LP |
793 | if (r < 0) { |
794 | log_error_errno(r, "Failed to create udev tag enumeration: %m"); | |
e1ce2c27 | 795 | goto fail; |
ba64af90 | 796 | } |
25ac040b | 797 | |
e1202047 | 798 | r = udev_enumerate_add_match_is_initialized(e); |
ba64af90 LP |
799 | if (r < 0) { |
800 | log_error_errno(r, "Failed to install initialization match into enumeration: %m"); | |
e1202047 | 801 | goto fail; |
ba64af90 | 802 | } |
e1202047 | 803 | |
718db961 | 804 | r = udev_enumerate_scan_devices(e); |
ba64af90 LP |
805 | if (r < 0) { |
806 | log_error_errno(r, "Failed to enumerate devices: %m"); | |
4f2d528d | 807 | goto fail; |
ba64af90 | 808 | } |
25ac040b | 809 | |
4f2d528d | 810 | first = udev_enumerate_get_list_entry(e); |
628c89cc | 811 | udev_list_entry_foreach(item, first) { |
8e766630 | 812 | _cleanup_(udev_device_unrefp) struct udev_device *dev = NULL; |
628c89cc LP |
813 | const char *sysfs; |
814 | ||
815 | sysfs = udev_list_entry_get_name(item); | |
816 | ||
817 | dev = udev_device_new_from_syspath(m->udev, sysfs); | |
818 | if (!dev) { | |
819 | log_oom(); | |
820 | continue; | |
821 | } | |
822 | ||
823 | if (!device_is_ready(dev)) | |
824 | continue; | |
825 | ||
826 | (void) device_process_new(m, dev); | |
827 | ||
918e6f1c | 828 | device_update_found_by_sysfs(m, sysfs, true, DEVICE_FOUND_UDEV_DB, false); |
628c89cc | 829 | } |
25ac040b | 830 | |
ba64af90 | 831 | return; |
25ac040b LP |
832 | |
833 | fail: | |
25ac040b | 834 | device_shutdown(m); |
5cb5a6ff LP |
835 | } |
836 | ||
718db961 | 837 | static int device_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
8e766630 | 838 | _cleanup_(udev_device_unrefp) struct udev_device *dev = NULL; |
718db961 | 839 | Manager *m = userdata; |
628c89cc | 840 | const char *action, *sysfs; |
718db961 | 841 | int r; |
f94ea366 LP |
842 | |
843 | assert(m); | |
99448c1f | 844 | |
718db961 | 845 | if (revents != EPOLLIN) { |
99448c1f KS |
846 | static RATELIMIT_DEFINE(limit, 10*USEC_PER_SEC, 5); |
847 | ||
a1bcaa07 ZJS |
848 | if (ratelimit_test(&limit)) |
849 | log_warning("Failed to get udev event"); | |
718db961 LP |
850 | if (!(revents & EPOLLIN)) |
851 | return 0; | |
99448c1f | 852 | } |
f94ea366 | 853 | |
718db961 LP |
854 | /* |
855 | * libudev might filter-out devices which pass the bloom | |
856 | * filter, so getting NULL here is not necessarily an error. | |
857 | */ | |
858 | dev = udev_monitor_receive_device(m->udev_monitor); | |
859 | if (!dev) | |
860 | return 0; | |
f94ea366 | 861 | |
628c89cc LP |
862 | sysfs = udev_device_get_syspath(dev); |
863 | if (!sysfs) { | |
864 | log_error("Failed to get udev sys path."); | |
865 | return 0; | |
866 | } | |
867 | ||
718db961 LP |
868 | action = udev_device_get_action(dev); |
869 | if (!action) { | |
f94ea366 | 870 | log_error("Failed to get udev action string."); |
718db961 | 871 | return 0; |
f94ea366 LP |
872 | } |
873 | ||
f332611a | 874 | if (streq(action, "change")) { |
f332611a | 875 | Unit *u; |
bf70ff2c | 876 | Device *d, *l, *n; |
f332611a | 877 | |
bf70ff2c JR |
878 | l = hashmap_get(m->devices_by_sysfs, sysfs); |
879 | LIST_FOREACH_SAFE(same_sysfs, d, n, l) { | |
880 | u = &d->meta; | |
f332611a JR |
881 | if (u && UNIT_VTABLE(u)->active_state(u) == UNIT_ACTIVE) { |
882 | r = manager_propagate_reload(m, u, JOB_REPLACE, NULL); | |
883 | if (r < 0) | |
884 | log_error_errno(r, "Failed to propagate reload: %m"); | |
885 | } | |
886 | } | |
887 | } | |
888 | ||
889 | /* A change event can signal that a device is becoming ready, in particular if | |
890 | * the device is using the SYSTEMD_READY logic in udev | |
891 | * so we need to reach the else block of the follwing if, even for change events */ | |
6d445911 | 892 | if (streq(action, "remove")) { |
628c89cc | 893 | r = swap_process_device_remove(m, dev); |
9670d583 | 894 | if (r < 0) |
da927ba9 | 895 | log_error_errno(r, "Failed to process swap device remove event: %m"); |
9670d583 | 896 | |
628c89cc LP |
897 | /* If we get notified that a device was removed by |
898 | * udev, then it's completely gone, hence unset all | |
899 | * found bits */ | |
900 | device_update_found_by_sysfs(m, sysfs, false, DEVICE_FOUND_UDEV|DEVICE_FOUND_MOUNT|DEVICE_FOUND_SWAP, true); | |
f1421cc6 | 901 | |
628c89cc LP |
902 | } else if (device_is_ready(dev)) { |
903 | ||
904 | (void) device_process_new(m, dev); | |
905 | ||
906 | r = swap_process_device_new(m, dev); | |
9670d583 | 907 | if (r < 0) |
da927ba9 | 908 | log_error_errno(r, "Failed to process swap device new event: %m"); |
9670d583 | 909 | |
f1421cc6 LP |
910 | manager_dispatch_load_queue(m); |
911 | ||
628c89cc LP |
912 | /* The device is found now, set the udev found bit */ |
913 | device_update_found_by_sysfs(m, sysfs, true, DEVICE_FOUND_UDEV, true); | |
914 | ||
915 | } else { | |
916 | /* The device is nominally around, but not ready for | |
917 | * us. Hence unset the udev bit, but leave the rest | |
918 | * around. */ | |
919 | ||
920 | device_update_found_by_sysfs(m, sysfs, false, DEVICE_FOUND_UDEV, true); | |
f94ea366 LP |
921 | } |
922 | ||
718db961 | 923 | return 0; |
f94ea366 LP |
924 | } |
925 | ||
1c2e9646 | 926 | static bool device_supported(void) { |
0faacd47 | 927 | static int read_only = -1; |
0faacd47 LP |
928 | |
929 | /* If /sys is read-only we don't support device units, and any | |
930 | * attempts to start one should fail immediately. */ | |
931 | ||
932 | if (read_only < 0) | |
933 | read_only = path_is_read_only_fs("/sys"); | |
934 | ||
935 | return read_only <= 0; | |
936 | } | |
937 | ||
628c89cc | 938 | int device_found_node(Manager *m, const char *node, bool add, DeviceFound found, bool now) { |
8e766630 | 939 | _cleanup_(udev_device_unrefp) struct udev_device *dev = NULL; |
628c89cc LP |
940 | struct stat st; |
941 | ||
942 | assert(m); | |
943 | assert(node); | |
944 | ||
4c6d20de LP |
945 | if (!device_supported()) |
946 | return 0; | |
947 | ||
628c89cc LP |
948 | /* This is called whenever we find a device referenced in |
949 | * /proc/swaps or /proc/self/mounts. Such a device might be | |
950 | * mounted/enabled at a time where udev has not finished | |
951 | * probing it yet, and we thus haven't learned about it | |
952 | * yet. In this case we will set the device unit to | |
953 | * "tentative" state. */ | |
954 | ||
955 | if (add) { | |
956 | if (!path_startswith(node, "/dev")) | |
957 | return 0; | |
958 | ||
f6200941 LP |
959 | /* We make an extra check here, if the device node |
960 | * actually exists. If it's missing, then this is an | |
961 | * indication that device was unplugged but is still | |
962 | * referenced in /proc/swaps or | |
963 | * /proc/self/mountinfo. Note that this check doesn't | |
964 | * really cover all cases where a device might be gone | |
965 | * away, since drives that can have a medium inserted | |
966 | * will still have a device node even when the medium | |
967 | * is not there... */ | |
968 | ||
2005219f MP |
969 | if (stat(node, &st) >= 0) { |
970 | if (!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode)) | |
628c89cc LP |
971 | return 0; |
972 | ||
2005219f MP |
973 | dev = udev_device_new_from_devnum(m->udev, S_ISBLK(st.st_mode) ? 'b' : 'c', st.st_rdev); |
974 | if (!dev && errno != ENOENT) | |
975 | return log_error_errno(errno, "Failed to get udev device from devnum %u:%u: %m", major(st.st_rdev), minor(st.st_rdev)); | |
628c89cc | 976 | |
2005219f MP |
977 | } else if (errno != ENOENT) |
978 | return log_error_errno(errno, "Failed to stat device node file %s: %m", node); | |
628c89cc LP |
979 | |
980 | /* If the device is known in the kernel and newly | |
981 | * appeared, then we'll create a device unit for it, | |
982 | * under the name referenced in /proc/swaps or | |
983 | * /proc/self/mountinfo. */ | |
984 | ||
985 | (void) device_setup_unit(m, dev, node, false); | |
986 | } | |
987 | ||
988 | /* Update the device unit's state, should it exist */ | |
989 | return device_update_found_by_name(m, node, add, found, now); | |
990 | } | |
991 | ||
ebc8968b FB |
992 | bool device_shall_be_bound_by(Unit *device, Unit *u) { |
993 | ||
994 | if (u->type != UNIT_MOUNT) | |
995 | return false; | |
996 | ||
997 | return DEVICE(device)->bind_mounts; | |
998 | } | |
999 | ||
87f0e418 | 1000 | const UnitVTable device_vtable = { |
7d17cfbc | 1001 | .object_size = sizeof(Device), |
f975e971 LP |
1002 | .sections = |
1003 | "Unit\0" | |
1004 | "Device\0" | |
1005 | "Install\0", | |
5cb5a6ff | 1006 | |
c5a97ed1 LP |
1007 | .gc_jobs = true, |
1008 | ||
faf919f1 | 1009 | .init = device_init, |
034c6ed7 | 1010 | .done = device_done, |
718db961 LP |
1011 | .load = unit_load_fragment_and_dropin_optional, |
1012 | ||
f50e0a01 LP |
1013 | .coldplug = device_coldplug, |
1014 | ||
f6200941 LP |
1015 | .serialize = device_serialize, |
1016 | .deserialize_item = device_deserialize_item, | |
1017 | ||
5cb5a6ff LP |
1018 | .dump = device_dump, |
1019 | ||
f50e0a01 | 1020 | .active_state = device_active_state, |
10a94420 | 1021 | .sub_state_to_string = device_sub_state_to_string, |
25ac040b | 1022 | |
718db961 | 1023 | .bus_vtable = bus_device_vtable, |
4139c1b2 | 1024 | |
a7f241db | 1025 | .following = device_following, |
6210e7fc | 1026 | .following_set = device_following_set, |
a7f241db | 1027 | |
f50e0a01 | 1028 | .enumerate = device_enumerate, |
c6918296 | 1029 | .shutdown = device_shutdown, |
0faacd47 | 1030 | .supported = device_supported, |
c6918296 MS |
1031 | |
1032 | .status_message_formats = { | |
1033 | .starting_stopping = { | |
1034 | [0] = "Expecting device %s...", | |
1035 | }, | |
1036 | .finished_start_job = { | |
1037 | [JOB_DONE] = "Found device %s.", | |
1038 | [JOB_TIMEOUT] = "Timed out waiting for device %s.", | |
1039 | }, | |
1040 | }, | |
5cb5a6ff | 1041 | }; |