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eb1f0e66 KS |
1 | /* |
2 | * libudev - interface to udev device information | |
3 | * | |
4 | * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "config.h" | |
21 | ||
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <stddef.h> | |
25 | #include <unistd.h> | |
26 | #include <errno.h> | |
27 | #include <string.h> | |
28 | #include <dirent.h> | |
29 | #include <sys/stat.h> | |
30 | ||
31 | #include "libudev.h" | |
32 | #include "libudev-private.h" | |
33 | #include "../udev.h" | |
34 | ||
11d543c1 KS |
35 | struct udev_device { |
36 | int refcount; | |
37 | struct udev *udev; | |
38 | char *devpath; | |
39 | char *syspath; | |
40 | char *devname; | |
41 | char *subsystem; | |
42 | struct list_head link_list; | |
43 | struct list_head env_list; | |
c4f5f942 KS |
44 | char *action; |
45 | char *driver; | |
46 | char *devpath_old; | |
47 | char *physdevpath; | |
48 | int timeout; | |
49 | dev_t devnum; | |
6bd1c78a KS |
50 | unsigned long long int seqnum; |
51 | int num_fake_partitions; | |
e88a82b5 | 52 | int devlink_priority; |
6bd1c78a | 53 | int ignore_remove; |
11d543c1 KS |
54 | }; |
55 | ||
e88a82b5 KS |
56 | static size_t devpath_to_db_path(struct udev *udev, const char *devpath, char *filename, size_t len) |
57 | { | |
58 | size_t start; | |
59 | ||
60 | /* translate to location of db file */ | |
61 | strlcpy(filename, udev_get_dev_path(udev), len); | |
62 | start = strlcat(filename, "/.udev/db/", len); | |
63 | strlcat(filename, devpath, len); | |
7a01f11a | 64 | return util_path_encode(&filename[start], len - start); |
e88a82b5 KS |
65 | } |
66 | ||
67 | static int device_read_db(struct udev_device *udev_device) | |
68 | { | |
69 | struct stat stats; | |
70 | char filename[PATH_SIZE]; | |
71 | char line[PATH_SIZE]; | |
72 | FILE *f; | |
73 | int rc = 0; | |
74 | ||
75 | devpath_to_db_path(udev_device->udev, udev_device->devpath, filename, sizeof(filename)); | |
76 | ||
77 | if (lstat(filename, &stats) != 0) { | |
78 | info(udev_device->udev, "no db file to read %s: %s\n", filename, strerror(errno)); | |
79 | return -1; | |
80 | } | |
81 | if ((stats.st_mode & S_IFMT) == S_IFLNK) { | |
82 | char target[NAME_SIZE]; | |
83 | int target_len; | |
84 | ||
85 | info(udev_device->udev, "found a symlink as db file\n"); | |
86 | target_len = readlink(filename, target, sizeof(target)); | |
87 | if (target_len > 0) | |
88 | target[target_len] = '\0'; | |
89 | else { | |
90 | info(udev_device->udev, "error reading db link %s: %s\n", filename, strerror(errno)); | |
91 | return -1; | |
92 | } | |
93 | dbg(udev_device->udev, "db link points to '%s'\n", target); | |
94 | if (asprintf(&udev_device->devname, "%s/%s", udev_get_dev_path(udev_device->udev), target) < 0) | |
95 | return -ENOMEM; | |
96 | return 0; | |
97 | } | |
98 | ||
99 | f = fopen(filename, "r"); | |
100 | if (f == NULL) { | |
101 | info(udev_device->udev, "error reading db file %s: %s\n", filename, strerror(errno)); | |
102 | return -1; | |
103 | } | |
104 | while (fgets(line, sizeof(line), f)) { | |
105 | ssize_t len; | |
106 | const char *val; | |
107 | unsigned int maj, min; | |
108 | ||
109 | len = strlen(line); | |
110 | if (len < 4) | |
111 | break; | |
112 | line[len-1] = '\0'; | |
113 | val = &line[2]; | |
114 | ||
115 | switch(line[0]) { | |
116 | case 'N': | |
117 | asprintf(&udev_device->devname, "%s/%s", udev_get_dev_path(udev_device->udev), val); | |
118 | break; | |
119 | case 'M': | |
120 | sscanf(val, "%u:%u", &maj, &min); | |
121 | device_set_devnum(udev_device, makedev(maj, min)); | |
122 | break; | |
123 | case 'S': | |
124 | strlcpy(filename, udev_get_dev_path(udev_device->udev), sizeof(filename)); | |
125 | strlcat(filename, "/", sizeof(filename)); | |
126 | strlcat(filename, val, sizeof(filename)); | |
127 | device_add_devlink(udev_device, filename); | |
128 | break; | |
129 | case 'L': | |
130 | device_set_devlink_priority(udev_device, atoi(val)); | |
131 | break; | |
132 | case 'T': | |
133 | device_set_timeout(udev_device, atoi(val)); | |
134 | break; | |
135 | case 'A': | |
136 | device_set_num_fake_partitions(udev_device, atoi(val)); | |
137 | break; | |
138 | case 'R': | |
139 | device_set_ignore_remove(udev_device, atoi(val)); | |
140 | break; | |
141 | case 'E': | |
142 | device_add_property(udev_device, val); | |
143 | break; | |
144 | } | |
145 | } | |
146 | fclose(f); | |
147 | ||
148 | return rc; | |
149 | } | |
150 | ||
ba6929f6 | 151 | struct udev_device *device_init(struct udev *udev) |
eb1f0e66 KS |
152 | { |
153 | struct udev_device *udev_device; | |
154 | ||
ba6929f6 KS |
155 | if (udev == NULL) |
156 | return NULL; | |
157 | ||
eb1f0e66 KS |
158 | udev_device = malloc(sizeof(struct udev_device)); |
159 | if (udev_device == NULL) | |
160 | return NULL; | |
161 | memset(udev_device, 0x00, sizeof(struct udev_device)); | |
162 | udev_device->refcount = 1; | |
163 | udev_device->udev = udev; | |
ba6929f6 KS |
164 | INIT_LIST_HEAD(&udev_device->link_list); |
165 | INIT_LIST_HEAD(&udev_device->env_list); | |
7d563a17 | 166 | info(udev_device->udev, "udev_device: %p created\n", udev_device); |
eb1f0e66 KS |
167 | return udev_device; |
168 | } | |
169 | ||
170 | /** | |
171 | * udev_device_new_from_devpath: | |
172 | * @udev: udev library context | |
173 | * @devpath: sys device path | |
174 | * | |
175 | * Create new udev device, and fill in information from the sysfs | |
176 | * device and the udev database entry. The devpath must not contain | |
177 | * the sysfs mount path, and must contain a leading '/'. | |
178 | * | |
179 | * The initial refcount is 1, and needs to be decremented to | |
180 | * release the ressources of the udev device. | |
181 | * | |
182 | * Returns: a new udev device, or #NULL, if it does not exist | |
183 | **/ | |
184 | struct udev_device *udev_device_new_from_devpath(struct udev *udev, const char *devpath) | |
185 | { | |
186 | char path[PATH_SIZE]; | |
187 | struct stat statbuf; | |
188 | struct udev_device *udev_device; | |
eb1f0e66 | 189 | |
ba6929f6 KS |
190 | if (udev == NULL) |
191 | return NULL; | |
192 | if (devpath == NULL) | |
193 | return NULL; | |
194 | ||
eb1f0e66 KS |
195 | strlcpy(path, udev_get_sys_path(udev), sizeof(path)); |
196 | strlcat(path, devpath, sizeof(path)); | |
197 | if (stat(path, &statbuf) != 0) | |
198 | return NULL; | |
199 | if (!S_ISDIR(statbuf.st_mode)) | |
200 | return NULL; | |
201 | ||
202 | udev_device = device_init(udev); | |
203 | if (udev_device == NULL) | |
204 | return NULL; | |
205 | ||
ba6929f6 | 206 | /* resolve possible symlink to real path */ |
eb1f0e66 | 207 | strlcpy(path, devpath, sizeof(path)); |
b21b95d7 | 208 | util_resolve_sys_link(udev, path, sizeof(path)); |
e88a82b5 | 209 | device_set_devpath(udev_device, path); |
7d563a17 | 210 | info(udev, "device %p has devpath '%s'\n", udev_device, udev_device_get_devpath(udev_device)); |
eb1f0e66 | 211 | |
e88a82b5 | 212 | if (device_read_db(udev_device) >= 0) |
7d563a17 | 213 | info(udev, "device %p filled with udev database data\n", udev_device); |
ba6929f6 | 214 | |
eb1f0e66 KS |
215 | return udev_device; |
216 | } | |
217 | ||
218 | /** | |
219 | * udev_device_get_udev: | |
7d8787b3 | 220 | * @udev_device: udev device |
eb1f0e66 KS |
221 | * |
222 | * Retrieve the udev library context the device was created with. | |
223 | * | |
224 | * Returns: the udev library context | |
225 | **/ | |
226 | struct udev *udev_device_get_udev(struct udev_device *udev_device) | |
227 | { | |
ba6929f6 KS |
228 | if (udev_device == NULL) |
229 | return NULL; | |
eb1f0e66 KS |
230 | return udev_device->udev; |
231 | } | |
232 | ||
233 | /** | |
234 | * udev_device_ref: | |
235 | * @udev_device: udev device | |
236 | * | |
237 | * Take a reference of a udev device. | |
238 | * | |
239 | * Returns: the passed udev device | |
240 | **/ | |
241 | struct udev_device *udev_device_ref(struct udev_device *udev_device) | |
242 | { | |
ba6929f6 KS |
243 | if (udev_device == NULL) |
244 | return NULL; | |
eb1f0e66 KS |
245 | udev_device->refcount++; |
246 | return udev_device; | |
247 | } | |
248 | ||
249 | /** | |
250 | * udev_device_unref: | |
251 | * @udev_device: udev device | |
252 | * | |
253 | * Drop a reference of a udev device. If the refcount reaches zero, | |
254 | * the ressources of the device will be released. | |
255 | * | |
256 | **/ | |
257 | void udev_device_unref(struct udev_device *udev_device) | |
258 | { | |
ba6929f6 KS |
259 | if (udev_device == NULL) |
260 | return; | |
eb1f0e66 KS |
261 | udev_device->refcount--; |
262 | if (udev_device->refcount > 0) | |
263 | return; | |
11d543c1 | 264 | free(udev_device->syspath); |
ba6929f6 KS |
265 | free(udev_device->devname); |
266 | free(udev_device->subsystem); | |
7a01f11a KS |
267 | util_name_list_cleanup(udev_device->udev, &udev_device->link_list); |
268 | util_name_list_cleanup(udev_device->udev, &udev_device->env_list); | |
1c7047ea KS |
269 | free(udev_device->action); |
270 | free(udev_device->driver); | |
271 | free(udev_device->devpath_old); | |
272 | free(udev_device->physdevpath); | |
7d563a17 | 273 | info(udev_device->udev, "udev_device: %p released\n", udev_device); |
eb1f0e66 KS |
274 | free(udev_device); |
275 | } | |
276 | ||
277 | /** | |
278 | * udev_device_get_devpath: | |
279 | * @udev_device: udev device | |
280 | * | |
11d543c1 KS |
281 | * Retrieve the kernel devpath value of the udev device. The path |
282 | * does not contain the sys mount point, and starts with a '/'. | |
eb1f0e66 | 283 | * |
11d543c1 | 284 | * Returns: the devpath of the udev device |
eb1f0e66 KS |
285 | **/ |
286 | const char *udev_device_get_devpath(struct udev_device *udev_device) | |
287 | { | |
ba6929f6 KS |
288 | if (udev_device == NULL) |
289 | return NULL; | |
290 | return udev_device->devpath; | |
eb1f0e66 KS |
291 | } |
292 | ||
11d543c1 KS |
293 | /** |
294 | * udev_device_get_syspath: | |
295 | * @udev_device: udev device | |
296 | * | |
297 | * Retrieve the sys path of the udev device. The path is an | |
298 | * absolute path and starts with the sys mount point. | |
299 | * | |
300 | * Returns: the sys path of the udev device | |
301 | **/ | |
302 | const char *udev_device_get_syspath(struct udev_device *udev_device) | |
303 | { | |
304 | if (udev_device == NULL) | |
305 | return NULL; | |
306 | return udev_device->syspath; | |
307 | } | |
308 | ||
eb1f0e66 KS |
309 | /** |
310 | * udev_device_get_devname: | |
311 | * @udev_device: udev device | |
312 | * | |
313 | * Retrieve the device node file name belonging to the udev device. | |
ba6929f6 | 314 | * The path is an absolute path, and starts with the device directory. |
eb1f0e66 KS |
315 | * |
316 | * Returns: the device node file name of the udev device, or #NULL if no device node exists | |
317 | **/ | |
318 | const char *udev_device_get_devname(struct udev_device *udev_device) | |
319 | { | |
ba6929f6 | 320 | if (udev_device == NULL) |
eb1f0e66 | 321 | return NULL; |
ba6929f6 | 322 | return udev_device->devname; |
eb1f0e66 KS |
323 | } |
324 | ||
325 | /** | |
326 | * udev_device_get_subsystem: | |
327 | * @udev_device: udev device | |
328 | * | |
329 | * Retrieve the subsystem string of the udev device. The string does not | |
330 | * contain any "/". | |
331 | * | |
332 | * Returns: the subsystem name of the udev device, or #NULL if it can not be determined | |
333 | **/ | |
334 | const char *udev_device_get_subsystem(struct udev_device *udev_device) | |
335 | { | |
ba6929f6 KS |
336 | char subsystem[NAME_SIZE]; |
337 | ||
338 | if (udev_device == NULL) | |
339 | return NULL; | |
340 | if (udev_device->subsystem != NULL) | |
341 | return udev_device->subsystem; | |
342 | if (util_get_sys_subsystem(udev_device->udev, udev_device->devpath, subsystem, sizeof(subsystem)) < 2) | |
eb1f0e66 | 343 | return NULL; |
ba6929f6 KS |
344 | udev_device->subsystem = strdup(subsystem); |
345 | return udev_device->subsystem; | |
eb1f0e66 KS |
346 | } |
347 | ||
348 | /** | |
349 | * udev_device_get_devlinks: | |
350 | * @udev_device: udev device | |
351 | * @cb: function to be called for every device link found | |
352 | * @data: data to be passed to the function | |
353 | * | |
354 | * Retrieve the device links pointing to the device file of the | |
355 | * udev device. For every device link, the passed function will be | |
ba6929f6 KS |
356 | * called with the device link string. |
357 | * The path is an absolute path, and starts with the device directory. | |
358 | * If the function returns 1, remaning device links will be ignored. | |
eb1f0e66 KS |
359 | * |
360 | * Returns: the number of device links passed to the caller, or a negative value on error | |
361 | **/ | |
362 | int udev_device_get_devlinks(struct udev_device *udev_device, | |
363 | int (*cb)(struct udev_device *udev_device, const char *value, void *data), | |
364 | void *data) | |
365 | { | |
366 | struct name_entry *name_loop; | |
367 | int count = 0; | |
368 | ||
ba6929f6 KS |
369 | if (udev_device == NULL) |
370 | return -1; | |
371 | list_for_each_entry(name_loop, &udev_device->link_list, node) { | |
eb1f0e66 KS |
372 | count++; |
373 | if (cb(udev_device, name_loop->name, data) != 0) | |
374 | break; | |
375 | } | |
376 | return count; | |
377 | } | |
378 | ||
379 | /** | |
380 | * udev_device_get_properties: | |
381 | * @udev_device: udev device | |
382 | * @cb: function to be called for every property found | |
383 | * @data: data to be passed to the function | |
384 | * | |
385 | * Retrieve the property key/value pairs belonging to the | |
386 | * udev device. For every key/value pair, the passed function will be | |
387 | * called. If the function returns 1, remaning properties will be | |
388 | * ignored. | |
389 | * | |
390 | * Returns: the number of properties passed to the caller, or a negative value on error | |
391 | **/ | |
392 | int udev_device_get_properties(struct udev_device *udev_device, | |
393 | int (*cb)(struct udev_device *udev_device, const char *key, const char *value, void *data), | |
394 | void *data) | |
395 | { | |
396 | struct name_entry *name_loop; | |
397 | int count = 0; | |
398 | ||
ba6929f6 KS |
399 | if (udev_device == NULL) |
400 | return -1; | |
401 | list_for_each_entry(name_loop, &udev_device->env_list, node) { | |
eb1f0e66 KS |
402 | char name[PATH_SIZE]; |
403 | char *val; | |
404 | ||
405 | strncpy(name, name_loop->name, PATH_SIZE); | |
406 | name[PATH_SIZE-1] = '\0'; | |
407 | val = strchr(name, '='); | |
408 | if (val == NULL) | |
409 | continue; | |
410 | val[0] = '\0'; | |
411 | val = &val[1]; | |
ba6929f6 | 412 | count++; |
eb1f0e66 KS |
413 | if (cb(udev_device, name, val, data) != 0) |
414 | break; | |
415 | } | |
416 | return count; | |
417 | } | |
11d543c1 | 418 | |
c4f5f942 KS |
419 | const char *udev_device_get_driver(struct udev_device *udev_device) |
420 | { | |
95d90c4f KS |
421 | char driver[NAME_SIZE]; |
422 | ||
c4f5f942 KS |
423 | if (udev_device == NULL) |
424 | return NULL; | |
95d90c4f KS |
425 | if (udev_device->driver != NULL) |
426 | return udev_device->driver; | |
427 | if (util_get_sys_driver(udev_device->udev, udev_device->devpath, driver, sizeof(driver)) < 2) | |
428 | return NULL; | |
429 | udev_device->driver = strdup(driver); | |
c4f5f942 KS |
430 | return udev_device->driver; |
431 | } | |
432 | ||
433 | dev_t udev_device_get_devnum(struct udev_device *udev_device) | |
434 | { | |
435 | if (udev_device == NULL) | |
436 | return makedev(0, 0); | |
437 | return udev_device->devnum; | |
438 | } | |
439 | ||
440 | const char *udev_device_get_action(struct udev_device *udev_device) | |
441 | { | |
442 | if (udev_device == NULL) | |
443 | return NULL; | |
444 | return udev_device->action; | |
445 | } | |
446 | ||
37372bbc KS |
447 | unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device) |
448 | { | |
449 | if (udev_device == NULL) | |
450 | return 0; | |
451 | return udev_device->seqnum; | |
452 | } | |
453 | ||
11d543c1 KS |
454 | int device_set_devpath(struct udev_device *udev_device, const char *devpath) |
455 | { | |
456 | if (asprintf(&udev_device->syspath, "%s%s", udev_get_sys_path(udev_device->udev), devpath) < 0) | |
457 | return -ENOMEM; | |
458 | udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))]; | |
459 | return 0; | |
460 | } | |
461 | ||
462 | int device_set_subsystem(struct udev_device *udev_device, const char *subsystem) | |
463 | { | |
464 | udev_device->subsystem = strdup(subsystem); | |
465 | if (udev_device->subsystem == NULL) | |
466 | return -1; | |
467 | return 0; | |
468 | } | |
469 | ||
470 | int device_set_devname(struct udev_device *udev_device, const char *devname) | |
471 | { | |
472 | udev_device->devname = strdup(devname); | |
473 | if (udev_device->devname == NULL) | |
474 | return -ENOMEM; | |
475 | return 0; | |
476 | } | |
477 | ||
478 | int device_add_devlink(struct udev_device *udev_device, const char *devlink) | |
479 | { | |
7a01f11a | 480 | if (util_name_list_add(udev_device->udev, &udev_device->link_list, devlink, 0) == NULL) |
11d543c1 KS |
481 | return -ENOMEM; |
482 | return 0; | |
483 | } | |
484 | ||
485 | int device_add_property(struct udev_device *udev_device, const char *property) | |
486 | { | |
7a01f11a | 487 | if (util_name_list_add(udev_device->udev, &udev_device->env_list, property, 0) == NULL) |
11d543c1 KS |
488 | return -ENOMEM; |
489 | return 0; | |
490 | } | |
c4f5f942 KS |
491 | |
492 | int device_set_action(struct udev_device *udev_device, const char *action) | |
493 | { | |
494 | udev_device->action = strdup(action); | |
495 | if (udev_device->action == NULL) | |
496 | return -ENOMEM; | |
497 | return 0; | |
498 | } | |
499 | ||
500 | int device_set_driver(struct udev_device *udev_device, const char *driver) | |
501 | { | |
502 | udev_device->driver = strdup(driver); | |
503 | if (udev_device->driver == NULL) | |
504 | return -ENOMEM; | |
505 | return 0; | |
506 | } | |
507 | ||
508 | const char *device_get_devpath_old(struct udev_device *udev_device) | |
509 | { | |
510 | if (udev_device == NULL) | |
511 | return NULL; | |
512 | return udev_device->devpath_old; | |
513 | } | |
514 | ||
515 | int device_set_devpath_old(struct udev_device *udev_device, const char *devpath_old) | |
516 | { | |
517 | udev_device->devpath_old = strdup(devpath_old); | |
518 | if (udev_device->devpath_old == NULL) | |
519 | return -ENOMEM; | |
520 | return 0; | |
521 | } | |
522 | ||
523 | const char *device_get_physdevpath(struct udev_device *udev_device) | |
524 | { | |
525 | if (udev_device == NULL) | |
526 | return NULL; | |
527 | return udev_device->physdevpath; | |
528 | } | |
529 | ||
530 | int device_set_physdevpath(struct udev_device *udev_device, const char *physdevpath) | |
531 | { | |
532 | udev_device->physdevpath = strdup(physdevpath); | |
533 | if (udev_device->physdevpath == NULL) | |
534 | return -ENOMEM; | |
535 | return 0; | |
536 | } | |
537 | ||
538 | int device_get_timeout(struct udev_device *udev_device) | |
539 | { | |
540 | if (udev_device == NULL) | |
541 | return -1; | |
542 | return udev_device->timeout; | |
543 | } | |
544 | ||
545 | int device_set_timeout(struct udev_device *udev_device, int timeout) | |
546 | { | |
547 | udev_device->timeout = timeout; | |
548 | return 0; | |
549 | } | |
550 | ||
37372bbc KS |
551 | int device_set_seqnum(struct udev_device *udev_device, unsigned long long int seqnum) |
552 | { | |
553 | udev_device->seqnum = seqnum; | |
554 | return 0; | |
555 | } | |
556 | ||
c4f5f942 KS |
557 | int device_set_devnum(struct udev_device *udev_device, dev_t devnum) |
558 | { | |
559 | udev_device->devnum = devnum; | |
560 | return 0; | |
561 | } | |
6bd1c78a KS |
562 | |
563 | int device_get_num_fake_partitions(struct udev_device *udev_device) | |
564 | { | |
565 | if (udev_device == NULL) | |
566 | return -1; | |
567 | return udev_device->num_fake_partitions; | |
568 | } | |
569 | ||
570 | int device_set_num_fake_partitions(struct udev_device *udev_device, int num) | |
571 | { | |
572 | udev_device->num_fake_partitions = num; | |
e88a82b5 | 573 | return 0; |
6bd1c78a KS |
574 | } |
575 | ||
e88a82b5 | 576 | int device_get_devlink_priority(struct udev_device *udev_device) |
6bd1c78a KS |
577 | { |
578 | if (udev_device == NULL) | |
579 | return -1; | |
e88a82b5 | 580 | return udev_device->devlink_priority; |
6bd1c78a KS |
581 | } |
582 | ||
e88a82b5 | 583 | int device_set_devlink_priority(struct udev_device *udev_device, int prio) |
6bd1c78a | 584 | { |
e88a82b5 KS |
585 | udev_device->devlink_priority = prio; |
586 | return 0; | |
6bd1c78a KS |
587 | } |
588 | ||
589 | int device_get_ignore_remove(struct udev_device *udev_device) | |
590 | { | |
591 | if (udev_device == NULL) | |
592 | return -1; | |
593 | return udev_device->ignore_remove; | |
594 | } | |
595 | ||
596 | int device_set_ignore_remove(struct udev_device *udev_device, int ignore) | |
597 | { | |
e88a82b5 KS |
598 | udev_device->ignore_remove = ignore; |
599 | return 0; | |
6bd1c78a | 600 | } |
e88a82b5 | 601 |