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eb1f0e66 KS |
1 | /* |
2 | * libudev - interface to udev device information | |
3 | * | |
fbb31cd6 | 4 | * Copyright (C) 2008-2010 Kay Sievers <kay.sievers@vrfy.org> |
eb1f0e66 | 5 | * |
4061ab9f KS |
6 | * This library is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
eb1f0e66 KS |
10 | */ |
11 | ||
eb1f0e66 KS |
12 | #include <stdio.h> |
13 | #include <stdlib.h> | |
14 | #include <stddef.h> | |
15 | #include <unistd.h> | |
fc8d61c5 | 16 | #include <stdbool.h> |
eb1f0e66 KS |
17 | #include <errno.h> |
18 | #include <string.h> | |
19 | #include <dirent.h> | |
93b0f384 | 20 | #include <fcntl.h> |
517814e7 | 21 | #include <ctype.h> |
eb1f0e66 KS |
22 | #include <sys/stat.h> |
23 | ||
24 | #include "libudev.h" | |
25 | #include "libudev-private.h" | |
eb1f0e66 | 26 | |
ce1d6d7f KS |
27 | /** |
28 | * SECTION:libudev-device | |
29 | * @short_description: kernel sys devices | |
30 | * | |
31 | * Representation of kernel sys devices. Devices are uniquely identified | |
32 | * by their syspath, every device has exactly one path in the kernel sys | |
33 | * filesystem. Devices usually belong to a kernel subsystem, and and have | |
214a6c79 | 34 | * a unique name inside that subsystem. |
ce1d6d7f KS |
35 | */ |
36 | ||
1e511322 KS |
37 | /** |
38 | * udev_device: | |
39 | * | |
ce1d6d7f | 40 | * Opaque object representing one kernel sys device. |
1e511322 | 41 | */ |
11d543c1 | 42 | struct udev_device { |
11d543c1 | 43 | struct udev *udev; |
b2d9e4f2 | 44 | struct udev_device *parent_device; |
11d543c1 | 45 | char *syspath; |
4ad3a37f | 46 | const char *devpath; |
517814e7 KS |
47 | char *sysname; |
48 | const char *sysnum; | |
99214844 | 49 | char *devnode; |
11d543c1 | 50 | char *subsystem; |
bf8b2ae1 | 51 | char *devtype; |
979ff016 | 52 | char *driver; |
c4f5f942 | 53 | char *action; |
c4f5f942 | 54 | char *devpath_old; |
2ffc9cc1 | 55 | char *sysname_old; |
cb14f454 | 56 | char *knodename; |
4281da1f | 57 | char *id_filename; |
6493e655 | 58 | char **envp; |
c2654402 KS |
59 | char *monitor_buf; |
60 | size_t monitor_buf_len; | |
b99028c9 KS |
61 | struct udev_list_node devlinks_list; |
62 | struct udev_list_node properties_list; | |
63 | struct udev_list_node sysattr_list; | |
28460195 | 64 | struct udev_list_node tags_list; |
6bd1c78a | 65 | unsigned long long int seqnum; |
b99028c9 KS |
66 | int event_timeout; |
67 | int timeout; | |
e88a82b5 | 68 | int devlink_priority; |
b99028c9 KS |
69 | int refcount; |
70 | dev_t devnum; | |
fc416258 | 71 | int ifindex; |
d7ce7539 | 72 | int watch_handle; |
fc8d61c5 | 73 | int maj, min; |
28460195 KS |
74 | bool parent_set; |
75 | bool subsystem_set; | |
76 | bool devtype_set; | |
77 | bool devlinks_uptodate; | |
78 | bool envp_uptodate; | |
79 | bool tags_uptodate; | |
80 | bool driver_set; | |
81 | bool info_loaded; | |
82 | bool db_loaded; | |
83 | bool uevent_loaded; | |
48a0170b | 84 | bool is_initialized; |
11d543c1 KS |
85 | }; |
86 | ||
fc8d61c5 KS |
87 | struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value) |
88 | { | |
28460195 | 89 | udev_device->envp_uptodate = false; |
fc8d61c5 KS |
90 | if (value == NULL) { |
91 | struct udev_list_entry *list_entry; | |
92 | ||
93 | list_entry = udev_device_get_properties_list_entry(udev_device); | |
94 | list_entry = udev_list_entry_get_by_name(list_entry, key); | |
95 | if (list_entry != NULL) | |
96 | udev_list_entry_delete(list_entry); | |
97 | return NULL; | |
98 | } | |
99 | return udev_list_entry_add(udev_device->udev, &udev_device->properties_list, key, value, 1, 0); | |
100 | } | |
101 | ||
102 | static struct udev_list_entry *udev_device_add_property_from_string(struct udev_device *udev_device, const char *property) | |
103 | { | |
104 | char name[UTIL_LINE_SIZE]; | |
105 | char *val; | |
106 | ||
107 | util_strscpy(name, sizeof(name), property); | |
108 | val = strchr(name, '='); | |
109 | if (val == NULL) | |
110 | return NULL; | |
111 | val[0] = '\0'; | |
112 | val = &val[1]; | |
113 | if (val[0] == '\0') | |
114 | val = NULL; | |
115 | return udev_device_add_property(udev_device, name, val); | |
116 | } | |
117 | ||
118 | /* | |
119 | * parse property string, and if needed, update internal values accordingly | |
120 | * | |
121 | * udev_device_add_property_from_string_parse_finish() needs to be | |
122 | * called after adding properties, and its return value checked | |
123 | * | |
124 | * udev_device_set_info_loaded() needs to be set, to avoid trying | |
125 | * to use a device without a DEVPATH set | |
126 | */ | |
127 | void udev_device_add_property_from_string_parse(struct udev_device *udev_device, const char *property) | |
128 | { | |
129 | if (strncmp(property, "DEVPATH=", 8) == 0) { | |
130 | char path[UTIL_PATH_SIZE]; | |
131 | ||
132 | util_strscpyl(path, sizeof(path), udev_get_sys_path(udev_device->udev), &property[8], NULL); | |
133 | udev_device_set_syspath(udev_device, path); | |
134 | } else if (strncmp(property, "SUBSYSTEM=", 10) == 0) { | |
135 | udev_device_set_subsystem(udev_device, &property[10]); | |
136 | } else if (strncmp(property, "DEVTYPE=", 8) == 0) { | |
137 | udev_device_set_devtype(udev_device, &property[8]); | |
138 | } else if (strncmp(property, "DEVNAME=", 8) == 0) { | |
139 | if (property[8] == '/') | |
140 | udev_device_set_devnode(udev_device, &property[8]); | |
141 | else | |
142 | udev_device_set_knodename(udev_device, &property[8]); | |
143 | } else if (strncmp(property, "DEVLINKS=", 9) == 0) { | |
144 | char devlinks[UTIL_PATH_SIZE]; | |
145 | char *slink; | |
146 | char *next; | |
147 | ||
148 | util_strscpy(devlinks, sizeof(devlinks), &property[9]); | |
149 | slink = devlinks; | |
150 | next = strchr(slink, ' '); | |
151 | while (next != NULL) { | |
152 | next[0] = '\0'; | |
153 | udev_device_add_devlink(udev_device, slink, 0); | |
154 | slink = &next[1]; | |
155 | next = strchr(slink, ' '); | |
156 | } | |
157 | if (slink[0] != '\0') | |
158 | udev_device_add_devlink(udev_device, slink, 0); | |
28460195 KS |
159 | } else if (strncmp(property, "TAGS=", 5) == 0) { |
160 | char tags[UTIL_PATH_SIZE]; | |
161 | char *next; | |
162 | ||
163 | util_strscpy(tags, sizeof(tags), &property[5]); | |
164 | next = strchr(tags, ':'); | |
165 | if (next != NULL) { | |
166 | next++; | |
167 | while (next[0] != '\0') { | |
168 | char *tag; | |
169 | ||
170 | tag = next; | |
171 | next = strchr(tag, ':'); | |
172 | if (next == NULL) | |
173 | break; | |
174 | next[0] = '\0'; | |
175 | next++; | |
176 | udev_device_add_tag(udev_device, tag); | |
177 | } | |
178 | } | |
fc8d61c5 KS |
179 | } else if (strncmp(property, "DRIVER=", 7) == 0) { |
180 | udev_device_set_driver(udev_device, &property[7]); | |
181 | } else if (strncmp(property, "ACTION=", 7) == 0) { | |
182 | udev_device_set_action(udev_device, &property[7]); | |
183 | } else if (strncmp(property, "MAJOR=", 6) == 0) { | |
184 | udev_device->maj = strtoull(&property[6], NULL, 10); | |
185 | } else if (strncmp(property, "MINOR=", 6) == 0) { | |
186 | udev_device->min = strtoull(&property[6], NULL, 10); | |
187 | } else if (strncmp(property, "DEVPATH_OLD=", 12) == 0) { | |
188 | udev_device_set_devpath_old(udev_device, &property[12]); | |
189 | } else if (strncmp(property, "SEQNUM=", 7) == 0) { | |
190 | udev_device_set_seqnum(udev_device, strtoull(&property[7], NULL, 10)); | |
191 | } else if (strncmp(property, "TIMEOUT=", 8) == 0) { | |
192 | udev_device_set_timeout(udev_device, strtoull(&property[8], NULL, 10)); | |
fc416258 KS |
193 | } else if (strncmp(property, "IFINDEX=", 8) == 0) { |
194 | udev_device_set_ifindex(udev_device, strtoull(&property[8], NULL, 10)); | |
fc8d61c5 KS |
195 | } else { |
196 | udev_device_add_property_from_string(udev_device, property); | |
197 | } | |
198 | } | |
199 | ||
200 | int udev_device_add_property_from_string_parse_finish(struct udev_device *udev_device) | |
201 | { | |
202 | if (udev_device->maj > 0) | |
203 | udev_device_set_devnum(udev_device, makedev(udev_device->maj, udev_device->min)); | |
204 | udev_device->maj = 0; | |
205 | udev_device->min = 0; | |
206 | ||
207 | if (udev_device->devpath == NULL || udev_device->subsystem == NULL) | |
208 | return -EINVAL; | |
209 | return 0; | |
210 | } | |
211 | ||
212 | /** | |
213 | * udev_device_get_property_value: | |
214 | * @udev_device: udev device | |
215 | * @key: property name | |
216 | * | |
217 | * Returns: the value of a device property, or #NULL if there is no such property. | |
218 | **/ | |
219 | const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key) | |
220 | { | |
221 | struct udev_list_entry *list_entry; | |
222 | ||
223 | if (udev_device == NULL) | |
224 | return NULL; | |
225 | if (key == NULL) | |
226 | return NULL; | |
227 | ||
228 | list_entry = udev_device_get_properties_list_entry(udev_device); | |
229 | list_entry = udev_list_entry_get_by_name(list_entry, key); | |
230 | return udev_list_entry_get_value(list_entry); | |
231 | } | |
232 | ||
77b852f3 | 233 | int udev_device_read_db(struct udev_device *udev_device) |
e88a82b5 | 234 | { |
4281da1f | 235 | const char *id; |
3eb46ec6 KS |
236 | char filename[UTIL_PATH_SIZE]; |
237 | char line[UTIL_LINE_SIZE]; | |
e88a82b5 | 238 | FILE *f; |
e88a82b5 | 239 | |
28460195 KS |
240 | if (udev_device->db_loaded) |
241 | return 0; | |
24d10766 | 242 | udev_device->db_loaded = true; |
28460195 | 243 | |
4281da1f KS |
244 | id = udev_device_get_id_filename(udev_device); |
245 | if (id == NULL) | |
246 | return -1; | |
247 | util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev_device->udev), "/.udev/db/", id, NULL); | |
0c5c4804 | 248 | f = fopen(filename, "re"); |
e88a82b5 | 249 | if (f == NULL) { |
24d10766 | 250 | info(udev_device->udev, "no db file to read %s: %m\n", filename); |
e88a82b5 KS |
251 | return -1; |
252 | } | |
48a0170b | 253 | udev_device->is_initialized = true; |
bfd88b1d | 254 | |
e88a82b5 KS |
255 | while (fgets(line, sizeof(line), f)) { |
256 | ssize_t len; | |
257 | const char *val; | |
24d10766 | 258 | struct udev_list_entry *entry; |
e88a82b5 KS |
259 | |
260 | len = strlen(line); | |
261 | if (len < 4) | |
262 | break; | |
263 | line[len-1] = '\0'; | |
264 | val = &line[2]; | |
e88a82b5 KS |
265 | switch(line[0]) { |
266 | case 'N': | |
065db052 | 267 | util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev_device->udev), "/", val, NULL); |
517814e7 | 268 | udev_device_set_devnode(udev_device, filename); |
e88a82b5 | 269 | break; |
e88a82b5 | 270 | case 'S': |
065db052 | 271 | util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev_device->udev), "/", val, NULL); |
6c29f2b9 | 272 | udev_device_add_devlink(udev_device, filename, 0); |
e88a82b5 KS |
273 | break; |
274 | case 'L': | |
8cd2e972 | 275 | udev_device_set_devlink_priority(udev_device, atoi(val)); |
e88a82b5 | 276 | break; |
e88a82b5 | 277 | case 'E': |
24d10766 KS |
278 | entry = udev_device_add_property_from_string(udev_device, val); |
279 | udev_list_entry_set_flags(entry, 1); | |
e88a82b5 | 280 | break; |
28460195 KS |
281 | case 'G': |
282 | udev_device_add_tag(udev_device, val); | |
283 | break; | |
d7ce7539 SJR |
284 | case 'W': |
285 | udev_device_set_watch_handle(udev_device, atoi(val)); | |
286 | break; | |
e88a82b5 KS |
287 | } |
288 | } | |
289 | fclose(f); | |
290 | ||
cd42b50d | 291 | info(udev_device->udev, "device %p filled with db file data\n", udev_device); |
04f5d75f | 292 | return 0; |
e88a82b5 KS |
293 | } |
294 | ||
bd85566c | 295 | int udev_device_read_uevent_file(struct udev_device *udev_device) |
99214844 KS |
296 | { |
297 | char filename[UTIL_PATH_SIZE]; | |
298 | FILE *f; | |
299 | char line[UTIL_LINE_SIZE]; | |
300 | int maj = 0; | |
301 | int min = 0; | |
302 | ||
28460195 KS |
303 | if (udev_device->uevent_loaded) |
304 | return 0; | |
305 | ||
065db052 | 306 | util_strscpyl(filename, sizeof(filename), udev_device->syspath, "/uevent", NULL); |
0c5c4804 | 307 | f = fopen(filename, "re"); |
99214844 KS |
308 | if (f == NULL) |
309 | return -1; | |
bfd88b1d | 310 | udev_device->uevent_loaded = true; |
99214844 KS |
311 | |
312 | while (fgets(line, sizeof(line), f)) { | |
313 | char *pos; | |
314 | ||
315 | pos = strchr(line, '\n'); | |
316 | if (pos == NULL) | |
317 | continue; | |
318 | pos[0] = '\0'; | |
319 | ||
bf8b2ae1 MH |
320 | if (strncmp(line, "DEVTYPE=", 8) == 0) |
321 | udev_device_set_devtype(udev_device, &line[8]); | |
322 | else if (strncmp(line, "MAJOR=", 6) == 0) | |
99214844 KS |
323 | maj = strtoull(&line[6], NULL, 10); |
324 | else if (strncmp(line, "MINOR=", 6) == 0) | |
325 | min = strtoull(&line[6], NULL, 10); | |
fc416258 KS |
326 | else if (strncmp(line, "IFINDEX=", 8) == 0) |
327 | udev_device_set_ifindex(udev_device, strtoull(&line[8], NULL, 10)); | |
cb14f454 KS |
328 | else if (strncmp(line, "DEVNAME=", 8) == 0) |
329 | udev_device_set_knodename(udev_device, &line[8]); | |
99214844 | 330 | |
8cd2e972 | 331 | udev_device_add_property_from_string(udev_device, line); |
99214844 KS |
332 | } |
333 | ||
334 | udev_device->devnum = makedev(maj, min); | |
99214844 KS |
335 | fclose(f); |
336 | return 0; | |
337 | } | |
338 | ||
8cd2e972 | 339 | void udev_device_set_info_loaded(struct udev_device *device) |
99214844 | 340 | { |
28460195 | 341 | device->info_loaded = true; |
99214844 KS |
342 | } |
343 | ||
a5710160 | 344 | struct udev_device *udev_device_new(struct udev *udev) |
eb1f0e66 KS |
345 | { |
346 | struct udev_device *udev_device; | |
ebacd6ec | 347 | struct udev_list_entry *list_entry; |
eb1f0e66 | 348 | |
ba6929f6 KS |
349 | if (udev == NULL) |
350 | return NULL; | |
351 | ||
b29a5e4a | 352 | udev_device = calloc(1, sizeof(struct udev_device)); |
eb1f0e66 KS |
353 | if (udev_device == NULL) |
354 | return NULL; | |
eb1f0e66 KS |
355 | udev_device->refcount = 1; |
356 | udev_device->udev = udev; | |
517814e7 | 357 | udev_list_init(&udev_device->devlinks_list); |
8cd2e972 | 358 | udev_list_init(&udev_device->properties_list); |
69239210 | 359 | udev_list_init(&udev_device->sysattr_list); |
28460195 | 360 | udev_list_init(&udev_device->tags_list); |
979ff016 | 361 | udev_device->event_timeout = -1; |
d7ce7539 | 362 | udev_device->watch_handle = -1; |
ebacd6ec KS |
363 | /* copy global properties */ |
364 | udev_list_entry_foreach(list_entry, udev_get_properties_list_entry(udev)) | |
365 | udev_device_add_property(udev_device, | |
366 | udev_list_entry_get_name(list_entry), | |
367 | udev_list_entry_get_value(list_entry)); | |
86b57788 | 368 | dbg(udev_device->udev, "udev_device: %p created\n", udev_device); |
eb1f0e66 KS |
369 | return udev_device; |
370 | } | |
371 | ||
372 | /** | |
8753fadf | 373 | * udev_device_new_from_syspath: |
eb1f0e66 | 374 | * @udev: udev library context |
8753fadf | 375 | * @syspath: sys device path including sys directory |
eb1f0e66 | 376 | * |
8753fadf | 377 | * Create new udev device, and fill in information from the sys |
214a6c79 | 378 | * device and the udev database entry. The syspath is the absolute |
8753fadf | 379 | * path to the device, including the sys mount point. |
eb1f0e66 KS |
380 | * |
381 | * The initial refcount is 1, and needs to be decremented to | |
be7de409 | 382 | * release the resources of the udev device. |
eb1f0e66 KS |
383 | * |
384 | * Returns: a new udev device, or #NULL, if it does not exist | |
385 | **/ | |
8753fadf | 386 | struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath) |
eb1f0e66 | 387 | { |
b95f8a76 KS |
388 | size_t len; |
389 | const char *subdir; | |
3eb46ec6 | 390 | char path[UTIL_PATH_SIZE]; |
62b9dfb6 | 391 | char *pos; |
eb1f0e66 KS |
392 | struct stat statbuf; |
393 | struct udev_device *udev_device; | |
eb1f0e66 | 394 | |
ba6929f6 KS |
395 | if (udev == NULL) |
396 | return NULL; | |
8753fadf | 397 | if (syspath == NULL) |
ba6929f6 KS |
398 | return NULL; |
399 | ||
b95f8a76 KS |
400 | /* path starts in sys */ |
401 | len = strlen(udev_get_sys_path(udev)); | |
402 | if (strncmp(syspath, udev_get_sys_path(udev), len) != 0) { | |
403 | info(udev, "not in sys :%s\n", syspath); | |
eb1f0e66 | 404 | return NULL; |
4ad3a37f | 405 | } |
eb1f0e66 | 406 | |
b95f8a76 KS |
407 | /* path is not a root directory */ |
408 | subdir = &syspath[len+1]; | |
409 | pos = strrchr(subdir, '/'); | |
f454f670 | 410 | if (pos == NULL || pos[1] == '\0' || pos < &subdir[2]) { |
86b57788 | 411 | dbg(udev, "not a subdir :%s\n", syspath); |
eb1f0e66 | 412 | return NULL; |
b95f8a76 | 413 | } |
eb1f0e66 | 414 | |
ba6929f6 | 415 | /* resolve possible symlink to real path */ |
065db052 | 416 | util_strscpy(path, sizeof(path), syspath); |
b21b95d7 | 417 | util_resolve_sys_link(udev, path, sizeof(path)); |
b95f8a76 | 418 | |
28460195 | 419 | if (strncmp(&path[len], "/devices/", 9) == 0) { |
b95f8a76 KS |
420 | char file[UTIL_PATH_SIZE]; |
421 | ||
422 | /* all "devices" require a "uevent" file */ | |
065db052 | 423 | util_strscpyl(file, sizeof(file), path, "/uevent", NULL); |
b95f8a76 | 424 | if (stat(file, &statbuf) != 0) { |
86b57788 | 425 | dbg(udev, "not a device: %s\n", syspath); |
b95f8a76 KS |
426 | return NULL; |
427 | } | |
428 | } else { | |
429 | /* everything else just needs to be a directory */ | |
430 | if (stat(path, &statbuf) != 0 || !S_ISDIR(statbuf.st_mode)) { | |
86b57788 | 431 | dbg(udev, "directory not found: %s\n", syspath); |
b95f8a76 KS |
432 | return NULL; |
433 | } | |
434 | } | |
435 | ||
a5710160 | 436 | udev_device = udev_device_new(udev); |
b95f8a76 KS |
437 | if (udev_device == NULL) |
438 | return NULL; | |
439 | ||
8cd2e972 | 440 | udev_device_set_syspath(udev_device, path); |
7d563a17 | 441 | info(udev, "device %p has devpath '%s'\n", udev_device, udev_device_get_devpath(udev_device)); |
eb1f0e66 | 442 | |
eb1f0e66 KS |
443 | return udev_device; |
444 | } | |
445 | ||
1e511322 KS |
446 | /** |
447 | * udev_device_new_from_devnum: | |
448 | * @udev: udev library context | |
449 | * @type: char or block device | |
450 | * @devnum: device major/minor number | |
451 | * | |
452 | * Create new udev device, and fill in information from the sys | |
dbba7e40 KS |
453 | * device and the udev database entry. The device is looked-up |
454 | * by its major/minor number and type. Character and block device | |
455 | * numbers are not unique across the two types. | |
1e511322 KS |
456 | * |
457 | * The initial refcount is 1, and needs to be decremented to | |
458 | * release the resources of the udev device. | |
459 | * | |
460 | * Returns: a new udev device, or #NULL, if it does not exist | |
461 | **/ | |
4c9dff47 KS |
462 | struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum) |
463 | { | |
464 | char path[UTIL_PATH_SIZE]; | |
03198b93 KS |
465 | const char *type_str; |
466 | ||
467 | if (type == 'b') | |
468 | type_str = "block"; | |
469 | else if (type == 'c') | |
470 | type_str = "char"; | |
471 | else | |
472 | return NULL; | |
4c9dff47 | 473 | |
58b533f4 KS |
474 | /* use /sys/dev/{block,char}/<maj>:<min> link */ |
475 | snprintf(path, sizeof(path), "%s/dev/%s/%u:%u", | |
476 | udev_get_sys_path(udev), type_str, major(devnum), minor(devnum)); | |
477 | return udev_device_new_from_syspath(udev, path); | |
4c9dff47 KS |
478 | } |
479 | ||
cad40a5f KS |
480 | struct udev_device *udev_device_new_from_id_filename(struct udev *udev, char *id) |
481 | { | |
482 | char type; | |
483 | int maj, min; | |
484 | char subsys[UTIL_PATH_SIZE]; | |
485 | char *sysname; | |
486 | ||
487 | switch(id[0]) { | |
488 | case 'b': | |
489 | case 'c': | |
490 | if (sscanf(id, "%c%i:%i", &type, &maj, &min) != 3) | |
491 | return NULL; | |
492 | return udev_device_new_from_devnum(udev, type, makedev(maj, min)); | |
493 | case '+': | |
494 | util_strscpy(subsys, sizeof(subsys), &id[1]); | |
495 | sysname = strchr(subsys, ':'); | |
496 | if (sysname == NULL) | |
497 | return NULL; | |
498 | sysname[0] = '\0'; | |
499 | sysname = &sysname[1]; | |
500 | return udev_device_new_from_subsystem_sysname(udev, subsys, sysname); | |
501 | default: | |
502 | return NULL; | |
503 | } | |
504 | } | |
505 | ||
1e511322 KS |
506 | /** |
507 | * udev_device_new_from_subsystem_sysname: | |
508 | * @udev: udev library context | |
214a6c79 | 509 | * @subsystem: the subsystem of the device |
1e511322 KS |
510 | * @sysname: the name of the device |
511 | * | |
dbba7e40 KS |
512 | * Create new udev device, and fill in information from the sys device |
513 | * and the udev database entry. The device is looked up by the subsystem | |
514 | * and name string of the device, like "mem" / "zero", or "block" / "sda". | |
1e511322 KS |
515 | * |
516 | * The initial refcount is 1, and needs to be decremented to | |
517 | * release the resources of the udev device. | |
518 | * | |
519 | * Returns: a new udev device, or #NULL, if it does not exist | |
520 | **/ | |
90d80c2e KS |
521 | struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname) |
522 | { | |
90d80c2e KS |
523 | char path_full[UTIL_PATH_SIZE]; |
524 | char *path; | |
065db052 | 525 | size_t l; |
90d80c2e KS |
526 | struct stat statbuf; |
527 | ||
065db052 KS |
528 | path = path_full; |
529 | l = util_strpcpyl(&path, sizeof(path_full), udev_get_sys_path(udev), NULL); | |
90d80c2e KS |
530 | |
531 | if (strcmp(subsystem, "subsystem") == 0) { | |
065db052 | 532 | util_strscpyl(path, l, "/subsystem/", sysname, NULL); |
90d80c2e KS |
533 | if (stat(path_full, &statbuf) == 0) |
534 | goto found; | |
535 | ||
065db052 | 536 | util_strscpyl(path, l, "/bus/", sysname, NULL); |
90d80c2e KS |
537 | if (stat(path_full, &statbuf) == 0) |
538 | goto found; | |
539 | ||
065db052 | 540 | util_strscpyl(path, l, "/class/", sysname, NULL); |
90d80c2e KS |
541 | if (stat(path_full, &statbuf) == 0) |
542 | goto found; | |
543 | goto out; | |
544 | } | |
545 | ||
546 | if (strcmp(subsystem, "module") == 0) { | |
065db052 | 547 | util_strscpyl(path, l, "/module/", sysname, NULL); |
90d80c2e KS |
548 | if (stat(path_full, &statbuf) == 0) |
549 | goto found; | |
550 | goto out; | |
551 | } | |
552 | ||
553 | if (strcmp(subsystem, "drivers") == 0) { | |
554 | char subsys[UTIL_NAME_SIZE]; | |
555 | char *driver; | |
556 | ||
065db052 | 557 | util_strscpy(subsys, sizeof(subsys), sysname); |
90d80c2e KS |
558 | driver = strchr(subsys, ':'); |
559 | if (driver != NULL) { | |
560 | driver[0] = '\0'; | |
561 | driver = &driver[1]; | |
065db052 KS |
562 | |
563 | util_strscpyl(path, l, "/subsystem/", subsys, "/drivers/", driver, NULL); | |
90d80c2e KS |
564 | if (stat(path_full, &statbuf) == 0) |
565 | goto found; | |
566 | ||
065db052 | 567 | util_strscpyl(path, l, "/bus/", subsys, "/drivers/", driver, NULL); |
90d80c2e KS |
568 | if (stat(path_full, &statbuf) == 0) |
569 | goto found; | |
570 | } | |
571 | goto out; | |
572 | } | |
573 | ||
065db052 | 574 | util_strscpyl(path, l, "/subsystem/", subsystem, "/devices/", sysname, NULL); |
90d80c2e KS |
575 | if (stat(path_full, &statbuf) == 0) |
576 | goto found; | |
577 | ||
065db052 | 578 | util_strscpyl(path, l, "/bus/", subsystem, "/devices/", sysname, NULL); |
90d80c2e KS |
579 | if (stat(path_full, &statbuf) == 0) |
580 | goto found; | |
581 | ||
065db052 | 582 | util_strscpyl(path, l, "/class/", subsystem, "/", sysname, NULL); |
90d80c2e KS |
583 | if (stat(path_full, &statbuf) == 0) |
584 | goto found; | |
585 | out: | |
586 | return NULL; | |
587 | found: | |
588 | return udev_device_new_from_syspath(udev, path_full); | |
589 | } | |
590 | ||
fc8d61c5 KS |
591 | /** |
592 | * udev_device_new_from_environment | |
593 | * @udev: udev library context | |
594 | * | |
595 | * Create new udev device, and fill in information from the | |
596 | * current process environment. This only works reliable if | |
597 | * the process is called from a udev rule. It is usually used | |
598 | * for tools executed from IMPORT= rules. | |
599 | * | |
600 | * The initial refcount is 1, and needs to be decremented to | |
601 | * release the resources of the udev device. | |
602 | * | |
603 | * Returns: a new udev device, or #NULL, if it does not exist | |
604 | **/ | |
605 | struct udev_device *udev_device_new_from_environment(struct udev *udev) | |
606 | { | |
607 | int i; | |
608 | struct udev_device *udev_device; | |
609 | ||
610 | udev_device = udev_device_new(udev); | |
611 | if (udev_device == NULL) | |
612 | return NULL; | |
613 | udev_device_set_info_loaded(udev_device); | |
614 | ||
615 | for (i = 0; environ[i] != NULL; i++) | |
616 | udev_device_add_property_from_string_parse(udev_device, environ[i]); | |
617 | ||
618 | if (udev_device_add_property_from_string_parse_finish(udev_device) < 0) { | |
619 | info(udev, "missing values, invalid device\n"); | |
620 | udev_device_unref(udev_device); | |
621 | udev_device = NULL; | |
622 | } | |
623 | ||
624 | return udev_device; | |
625 | } | |
626 | ||
b2d9e4f2 | 627 | static struct udev_device *device_new_from_parent(struct udev_device *udev_device) |
4ad3a37f KS |
628 | { |
629 | struct udev_device *udev_device_parent = NULL; | |
630 | char path[UTIL_PATH_SIZE]; | |
b95f8a76 | 631 | const char *subdir; |
4ad3a37f | 632 | |
065db052 | 633 | util_strscpy(path, sizeof(path), udev_device->syspath); |
b95f8a76 | 634 | subdir = &path[strlen(udev_get_sys_path(udev_device->udev))+1]; |
3c189886 | 635 | for (;;) { |
b95f8a76 KS |
636 | char *pos; |
637 | ||
638 | pos = strrchr(subdir, '/'); | |
639 | if (pos == NULL || pos < &subdir[2]) | |
4ad3a37f KS |
640 | break; |
641 | pos[0] = '\0'; | |
8753fadf | 642 | udev_device_parent = udev_device_new_from_syspath(udev_device->udev, path); |
4ad3a37f | 643 | if (udev_device_parent != NULL) |
0518da3b KS |
644 | return udev_device_parent; |
645 | } | |
0518da3b | 646 | return NULL; |
4ad3a37f KS |
647 | } |
648 | ||
1e511322 KS |
649 | /** |
650 | * udev_device_get_parent: | |
651 | * @udev_device: the device to start searching from | |
652 | * | |
653 | * Find the next parent device, and fill in information from the sys | |
654 | * device and the udev database entry. | |
655 | * | |
656 | * The returned the device is not referenced. It is attached to the | |
657 | * child device, and will be cleaned up when the child device | |
658 | * is cleaned up. | |
659 | * | |
214a6c79 | 660 | * It is not necessarily just the upper level directory, empty or not |
1e511322 KS |
661 | * recognized sys directories are ignored. |
662 | * | |
663 | * It can be called as many times as needed, without caring about | |
664 | * references. | |
665 | * | |
666 | * Returns: a new udev device, or #NULL, if it no parent exist. | |
667 | **/ | |
b2d9e4f2 KS |
668 | struct udev_device *udev_device_get_parent(struct udev_device *udev_device) |
669 | { | |
b95f8a76 KS |
670 | if (udev_device == NULL) |
671 | return NULL; | |
31f4b036 | 672 | if (!udev_device->parent_set) { |
28460195 | 673 | udev_device->parent_set = true; |
31f4b036 | 674 | udev_device->parent_device = device_new_from_parent(udev_device); |
0518da3b | 675 | } |
31f4b036 | 676 | if (udev_device->parent_device != NULL) |
86b57788 | 677 | dbg(udev_device->udev, "returning existing parent %p\n", udev_device->parent_device); |
b2d9e4f2 KS |
678 | return udev_device->parent_device; |
679 | } | |
680 | ||
1e511322 KS |
681 | /** |
682 | * udev_device_get_parent_with_subsystem_devtype: | |
683 | * @udev_device: udev device to start searching from | |
214a6c79 | 684 | * @subsystem: the subsystem of the device |
1e511322 KS |
685 | * @devtype: the type (DEVTYPE) of the device |
686 | * | |
687 | * Find the next parent device, with a matching subsystem and devtype | |
688 | * value, and fill in information from the sys device and the udev | |
689 | * database entry. | |
690 | * | |
79ef2e97 | 691 | * If devtype is #NULL, only subsystem is checked, and any devtype will |
54d4f54e MP |
692 | * match. |
693 | * | |
1e511322 KS |
694 | * The returned the device is not referenced. It is attached to the |
695 | * child device, and will be cleaned up when the child device | |
696 | * is cleaned up. | |
697 | * | |
698 | * It can be called as many times as needed, without caring about | |
699 | * references. | |
700 | * | |
8d6bc73a | 701 | * Returns: a new udev device, or #NULL if no matching parent exists. |
1e511322 | 702 | **/ |
883012d4 | 703 | struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, const char *subsystem, const char *devtype) |
bf8b2ae1 MH |
704 | { |
705 | struct udev_device *parent; | |
706 | ||
883012d4 MH |
707 | if (subsystem == NULL) |
708 | return NULL; | |
709 | ||
bf8b2ae1 MH |
710 | parent = udev_device_get_parent(udev_device); |
711 | while (parent != NULL) { | |
883012d4 | 712 | const char *parent_subsystem; |
bf8b2ae1 MH |
713 | const char *parent_devtype; |
714 | ||
883012d4 MH |
715 | parent_subsystem = udev_device_get_subsystem(parent); |
716 | if (parent_subsystem != NULL && strcmp(parent_subsystem, subsystem) == 0) { | |
717 | if (devtype == NULL) | |
718 | break; | |
719 | parent_devtype = udev_device_get_devtype(parent); | |
720 | if (parent_devtype != NULL && strcmp(parent_devtype, devtype) == 0) | |
721 | break; | |
722 | } | |
bf8b2ae1 MH |
723 | parent = udev_device_get_parent(parent); |
724 | } | |
725 | return parent; | |
726 | } | |
727 | ||
eb1f0e66 KS |
728 | /** |
729 | * udev_device_get_udev: | |
7d8787b3 | 730 | * @udev_device: udev device |
eb1f0e66 KS |
731 | * |
732 | * Retrieve the udev library context the device was created with. | |
733 | * | |
734 | * Returns: the udev library context | |
735 | **/ | |
736 | struct udev *udev_device_get_udev(struct udev_device *udev_device) | |
737 | { | |
ba6929f6 KS |
738 | if (udev_device == NULL) |
739 | return NULL; | |
eb1f0e66 KS |
740 | return udev_device->udev; |
741 | } | |
742 | ||
743 | /** | |
744 | * udev_device_ref: | |
745 | * @udev_device: udev device | |
746 | * | |
747 | * Take a reference of a udev device. | |
748 | * | |
749 | * Returns: the passed udev device | |
750 | **/ | |
751 | struct udev_device *udev_device_ref(struct udev_device *udev_device) | |
752 | { | |
ba6929f6 KS |
753 | if (udev_device == NULL) |
754 | return NULL; | |
eb1f0e66 KS |
755 | udev_device->refcount++; |
756 | return udev_device; | |
757 | } | |
758 | ||
759 | /** | |
760 | * udev_device_unref: | |
761 | * @udev_device: udev device | |
762 | * | |
763 | * Drop a reference of a udev device. If the refcount reaches zero, | |
be7de409 | 764 | * the resources of the device will be released. |
eb1f0e66 KS |
765 | * |
766 | **/ | |
767 | void udev_device_unref(struct udev_device *udev_device) | |
768 | { | |
ba6929f6 KS |
769 | if (udev_device == NULL) |
770 | return; | |
eb1f0e66 KS |
771 | udev_device->refcount--; |
772 | if (udev_device->refcount > 0) | |
773 | return; | |
b2d9e4f2 KS |
774 | if (udev_device->parent_device != NULL) |
775 | udev_device_unref(udev_device->parent_device); | |
11d543c1 | 776 | free(udev_device->syspath); |
517814e7 | 777 | free(udev_device->sysname); |
99214844 | 778 | free(udev_device->devnode); |
ba6929f6 | 779 | free(udev_device->subsystem); |
bf8b2ae1 | 780 | free(udev_device->devtype); |
eb8837e1 KS |
781 | udev_list_cleanup_entries(udev_device->udev, &udev_device->devlinks_list); |
782 | udev_list_cleanup_entries(udev_device->udev, &udev_device->properties_list); | |
28460195 KS |
783 | udev_list_cleanup_entries(udev_device->udev, &udev_device->sysattr_list); |
784 | udev_list_cleanup_entries(udev_device->udev, &udev_device->tags_list); | |
1c7047ea KS |
785 | free(udev_device->action); |
786 | free(udev_device->driver); | |
787 | free(udev_device->devpath_old); | |
2ffc9cc1 | 788 | free(udev_device->sysname_old); |
cb14f454 | 789 | free(udev_device->knodename); |
4281da1f | 790 | free(udev_device->id_filename); |
6493e655 | 791 | free(udev_device->envp); |
c2654402 | 792 | free(udev_device->monitor_buf); |
86b57788 | 793 | dbg(udev_device->udev, "udev_device: %p released\n", udev_device); |
eb1f0e66 KS |
794 | free(udev_device); |
795 | } | |
796 | ||
797 | /** | |
798 | * udev_device_get_devpath: | |
799 | * @udev_device: udev device | |
800 | * | |
11d543c1 KS |
801 | * Retrieve the kernel devpath value of the udev device. The path |
802 | * does not contain the sys mount point, and starts with a '/'. | |
eb1f0e66 | 803 | * |
11d543c1 | 804 | * Returns: the devpath of the udev device |
eb1f0e66 KS |
805 | **/ |
806 | const char *udev_device_get_devpath(struct udev_device *udev_device) | |
807 | { | |
ba6929f6 KS |
808 | if (udev_device == NULL) |
809 | return NULL; | |
810 | return udev_device->devpath; | |
eb1f0e66 KS |
811 | } |
812 | ||
11d543c1 KS |
813 | /** |
814 | * udev_device_get_syspath: | |
815 | * @udev_device: udev device | |
816 | * | |
817 | * Retrieve the sys path of the udev device. The path is an | |
818 | * absolute path and starts with the sys mount point. | |
819 | * | |
820 | * Returns: the sys path of the udev device | |
821 | **/ | |
822 | const char *udev_device_get_syspath(struct udev_device *udev_device) | |
823 | { | |
824 | if (udev_device == NULL) | |
825 | return NULL; | |
826 | return udev_device->syspath; | |
827 | } | |
828 | ||
1e511322 KS |
829 | /** |
830 | * udev_device_get_sysname: | |
831 | * @udev_device: udev device | |
832 | * | |
833 | * Returns: the sys name of the device device | |
834 | **/ | |
4ad3a37f KS |
835 | const char *udev_device_get_sysname(struct udev_device *udev_device) |
836 | { | |
837 | if (udev_device == NULL) | |
838 | return NULL; | |
839 | return udev_device->sysname; | |
840 | } | |
841 | ||
1e511322 KS |
842 | /** |
843 | * udev_device_get_sysnum: | |
844 | * @udev_device: udev device | |
845 | * | |
846 | * Returns: the trailing number of of the device name | |
847 | **/ | |
517814e7 KS |
848 | const char *udev_device_get_sysnum(struct udev_device *udev_device) |
849 | { | |
850 | if (udev_device == NULL) | |
851 | return NULL; | |
852 | return udev_device->sysnum; | |
853 | } | |
854 | ||
eb1f0e66 | 855 | /** |
fb762bb9 | 856 | * udev_device_get_devnode: |
eb1f0e66 KS |
857 | * @udev_device: udev device |
858 | * | |
859 | * Retrieve the device node file name belonging to the udev device. | |
ba6929f6 | 860 | * The path is an absolute path, and starts with the device directory. |
eb1f0e66 KS |
861 | * |
862 | * Returns: the device node file name of the udev device, or #NULL if no device node exists | |
863 | **/ | |
fb762bb9 | 864 | const char *udev_device_get_devnode(struct udev_device *udev_device) |
eb1f0e66 | 865 | { |
ba6929f6 | 866 | if (udev_device == NULL) |
eb1f0e66 | 867 | return NULL; |
cdb1d760 KS |
868 | if (!udev_device->info_loaded) { |
869 | udev_device_read_uevent_file(udev_device); | |
28460195 | 870 | udev_device_read_db(udev_device); |
cdb1d760 KS |
871 | } |
872 | ||
873 | /* we might get called before we handled an event and have a db, use the kernel-provided name */ | |
874 | if (udev_device->devnode == NULL && udev_device_get_knodename(udev_device) != NULL) { | |
24d10766 KS |
875 | char filename[UTIL_NAME_SIZE]; |
876 | ||
877 | util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev_device->udev), "/", | |
878 | udev_device_get_knodename(udev_device), NULL); | |
879 | udev_device_set_devnode(udev_device, filename); | |
cdb1d760 KS |
880 | return udev_device->devnode; |
881 | } | |
882 | ||
99214844 | 883 | return udev_device->devnode; |
eb1f0e66 KS |
884 | } |
885 | ||
886 | /** | |
887 | * udev_device_get_subsystem: | |
888 | * @udev_device: udev device | |
889 | * | |
890 | * Retrieve the subsystem string of the udev device. The string does not | |
891 | * contain any "/". | |
892 | * | |
893 | * Returns: the subsystem name of the udev device, or #NULL if it can not be determined | |
894 | **/ | |
895 | const char *udev_device_get_subsystem(struct udev_device *udev_device) | |
896 | { | |
17fcfb59 | 897 | char subsystem[UTIL_NAME_SIZE]; |
ba6929f6 KS |
898 | |
899 | if (udev_device == NULL) | |
900 | return NULL; | |
5c5cad79 | 901 | if (!udev_device->subsystem_set) { |
28460195 | 902 | udev_device->subsystem_set = true; |
214a6c79 | 903 | /* read "subsystem" link */ |
5c5cad79 KS |
904 | if (util_get_sys_subsystem(udev_device->udev, udev_device->syspath, subsystem, sizeof(subsystem)) > 0) { |
905 | udev_device_set_subsystem(udev_device, subsystem); | |
906 | return udev_device->subsystem; | |
907 | } | |
908 | /* implicit names */ | |
909 | if (strncmp(udev_device->devpath, "/module/", 8) == 0) { | |
910 | udev_device_set_subsystem(udev_device, "module"); | |
911 | return udev_device->subsystem; | |
912 | } | |
913 | if (strstr(udev_device->devpath, "/drivers/") != NULL) { | |
914 | udev_device_set_subsystem(udev_device, "drivers"); | |
915 | return udev_device->subsystem; | |
916 | } | |
917 | if (strncmp(udev_device->devpath, "/subsystem/", 11) == 0 || | |
918 | strncmp(udev_device->devpath, "/class/", 7) == 0 || | |
919 | strncmp(udev_device->devpath, "/bus/", 5) == 0) { | |
920 | udev_device_set_subsystem(udev_device, "subsystem"); | |
921 | return udev_device->subsystem; | |
922 | } | |
0518da3b | 923 | } |
5c5cad79 | 924 | return udev_device->subsystem; |
eb1f0e66 KS |
925 | } |
926 | ||
bf8b2ae1 MH |
927 | /** |
928 | * udev_device_get_devtype: | |
929 | * @udev_device: udev device | |
930 | * | |
931 | * Retrieve the devtype string of the udev device. | |
932 | * | |
933 | * Returns: the devtype name of the udev device, or #NULL if it can not be determined | |
934 | **/ | |
935 | const char *udev_device_get_devtype(struct udev_device *udev_device) | |
936 | { | |
937 | if (udev_device == NULL) | |
938 | return NULL; | |
939 | if (!udev_device->devtype_set) { | |
28460195 KS |
940 | udev_device->devtype_set = true; |
941 | udev_device_read_uevent_file(udev_device); | |
bf8b2ae1 MH |
942 | } |
943 | return udev_device->devtype; | |
944 | } | |
945 | ||
eb1f0e66 | 946 | /** |
0de33a61 | 947 | * udev_device_get_devlinks_list_entry: |
eb1f0e66 | 948 | * @udev_device: udev device |
eb1f0e66 | 949 | * |
bf7ad0ea KS |
950 | * Retrieve the list of device links pointing to the device file of |
951 | * the udev device. The next list entry can be retrieved with | |
e345e267 | 952 | * udev_list_entry_next(), which returns #NULL if no more entries exist. |
bf7ad0ea | 953 | * The devlink path can be retrieved from the list entry by |
e345e267 | 954 | * udev_list_entry_get_name(). The path is an absolute path, and starts with |
bf7ad0ea | 955 | * the device directory. |
eb1f0e66 | 956 | * |
bf7ad0ea | 957 | * Returns: the first entry of the device node link list |
eb1f0e66 | 958 | **/ |
0de33a61 | 959 | struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *udev_device) |
eb1f0e66 | 960 | { |
99214844 KS |
961 | if (udev_device == NULL) |
962 | return NULL; | |
963 | if (!udev_device->info_loaded) | |
28460195 | 964 | udev_device_read_db(udev_device); |
517814e7 | 965 | return udev_list_get_entry(&udev_device->devlinks_list); |
eb1f0e66 KS |
966 | } |
967 | ||
979ff016 KS |
968 | void udev_device_cleanup_devlinks_list(struct udev_device *udev_device) |
969 | { | |
28460195 | 970 | udev_device->devlinks_uptodate = false; |
eb8837e1 | 971 | udev_list_cleanup_entries(udev_device->udev, &udev_device->devlinks_list); |
979ff016 KS |
972 | } |
973 | ||
eb1f0e66 | 974 | /** |
0de33a61 | 975 | * udev_device_get_properties_list_entry: |
eb1f0e66 | 976 | * @udev_device: udev device |
eb1f0e66 | 977 | * |
bf7ad0ea | 978 | * Retrieve the list of key/value device properties of the udev |
e345e267 | 979 | * device. The next list entry can be retrieved with udev_list_entry_next(), |
bf7ad0ea KS |
980 | * which returns #NULL if no more entries exist. The property name |
981 | * can be retrieved from the list entry by udev_list_get_name(), | |
982 | * the property value by udev_list_get_value(). | |
eb1f0e66 | 983 | * |
bf7ad0ea | 984 | * Returns: the first entry of the property list |
eb1f0e66 | 985 | **/ |
0de33a61 | 986 | struct udev_list_entry *udev_device_get_properties_list_entry(struct udev_device *udev_device) |
eb1f0e66 | 987 | { |
99214844 KS |
988 | if (udev_device == NULL) |
989 | return NULL; | |
28460195 KS |
990 | if (!udev_device->info_loaded) { |
991 | udev_device_read_uevent_file(udev_device); | |
992 | udev_device_read_db(udev_device); | |
993 | } | |
bd85566c KS |
994 | if (!udev_device->devlinks_uptodate) { |
995 | char symlinks[UTIL_PATH_SIZE]; | |
996 | struct udev_list_entry *list_entry; | |
997 | ||
28460195 | 998 | udev_device->devlinks_uptodate = true; |
bd85566c KS |
999 | list_entry = udev_device_get_devlinks_list_entry(udev_device); |
1000 | if (list_entry != NULL) { | |
065db052 KS |
1001 | char *s; |
1002 | size_t l; | |
1003 | ||
1004 | s = symlinks; | |
1005 | l = util_strpcpyl(&s, sizeof(symlinks), udev_list_entry_get_name(list_entry), NULL); | |
1006 | udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry)) | |
1007 | l = util_strpcpyl(&s, l, " ", udev_list_entry_get_name(list_entry), NULL); | |
bd85566c KS |
1008 | udev_device_add_property(udev_device, "DEVLINKS", symlinks); |
1009 | } | |
1010 | } | |
28460195 KS |
1011 | if (!udev_device->tags_uptodate) { |
1012 | udev_device->tags_uptodate = true; | |
1013 | if (udev_device_get_tags_list_entry(udev_device) != NULL) { | |
1014 | char tags[UTIL_PATH_SIZE]; | |
1015 | struct udev_list_entry *list_entry; | |
1016 | char *s; | |
1017 | size_t l; | |
1018 | ||
1019 | s = tags; | |
1020 | l = util_strpcpyl(&s, sizeof(tags), ":", NULL); | |
1021 | udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device)) | |
1022 | l = util_strpcpyl(&s, l, udev_list_entry_get_name(list_entry), ":", NULL); | |
1023 | udev_device_add_property(udev_device, "TAGS", tags); | |
1024 | } | |
1025 | } | |
8cd2e972 | 1026 | return udev_list_get_entry(&udev_device->properties_list); |
eb1f0e66 | 1027 | } |
11d543c1 | 1028 | |
1e511322 KS |
1029 | /** |
1030 | * udev_device_get_driver: | |
1031 | * @udev_device: udev device | |
1032 | * | |
ce1d6d7f | 1033 | * Returns: the driver string, or #NULL if there is no driver attached. |
1e511322 | 1034 | **/ |
c4f5f942 KS |
1035 | const char *udev_device_get_driver(struct udev_device *udev_device) |
1036 | { | |
17fcfb59 | 1037 | char driver[UTIL_NAME_SIZE]; |
95d90c4f | 1038 | |
c4f5f942 KS |
1039 | if (udev_device == NULL) |
1040 | return NULL; | |
5c5cad79 | 1041 | if (!udev_device->driver_set) { |
28460195 | 1042 | udev_device->driver_set = true; |
5c5cad79 KS |
1043 | if (util_get_sys_driver(udev_device->udev, udev_device->syspath, driver, sizeof(driver)) > 0) |
1044 | udev_device->driver = strdup(driver); | |
1045 | } | |
c4f5f942 KS |
1046 | return udev_device->driver; |
1047 | } | |
1048 | ||
1e511322 KS |
1049 | /** |
1050 | * udev_device_get_devnum: | |
1051 | * @udev_device: udev device | |
1052 | * | |
1053 | * Returns: the device major/minor number. | |
1054 | **/ | |
c4f5f942 KS |
1055 | dev_t udev_device_get_devnum(struct udev_device *udev_device) |
1056 | { | |
1057 | if (udev_device == NULL) | |
1058 | return makedev(0, 0); | |
99214844 | 1059 | if (!udev_device->info_loaded) |
28460195 | 1060 | udev_device_read_uevent_file(udev_device); |
c4f5f942 KS |
1061 | return udev_device->devnum; |
1062 | } | |
1063 | ||
1e511322 KS |
1064 | /** |
1065 | * udev_device_get_action: | |
1066 | * @udev_device: udev device | |
1067 | * | |
1068 | * This is only valid if the device was received through a monitor. Devices read from | |
1069 | * sys do not have an action string. Usual actions are: add, remove, change, online, | |
1070 | * offline. | |
1071 | * | |
1072 | * Returns: the kernel action value, or #NULL if there is no action value available. | |
1073 | **/ | |
c4f5f942 KS |
1074 | const char *udev_device_get_action(struct udev_device *udev_device) |
1075 | { | |
1076 | if (udev_device == NULL) | |
1077 | return NULL; | |
1078 | return udev_device->action; | |
1079 | } | |
1080 | ||
1e511322 KS |
1081 | /** |
1082 | * udev_device_get_devnum: | |
1083 | * @udev_device: udev device | |
1084 | * | |
1085 | * This is only valid if the device was received through a monitor. Devices read from | |
1086 | * sys do not have a sequence number. | |
1087 | * | |
1088 | * Returns: the kernel event sequence number, or 0 if there is no sequence number available. | |
1089 | **/ | |
37372bbc KS |
1090 | unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device) |
1091 | { | |
1092 | if (udev_device == NULL) | |
1093 | return 0; | |
1094 | return udev_device->seqnum; | |
1095 | } | |
1096 | ||
1e511322 KS |
1097 | /** |
1098 | * udev_device_get_sysattr_value: | |
1099 | * @udev_device: udev device | |
1100 | * @sysattr: attribute name | |
1101 | * | |
456719b6 | 1102 | * The retrieved value is cached in the device. Repeated calls will return the same |
1e511322 KS |
1103 | * value and not open the attribute again. |
1104 | * | |
1105 | * Returns: the content of a sys attribute file, or #NULL if there is no sys attribute value. | |
1106 | **/ | |
69239210 | 1107 | const char *udev_device_get_sysattr_value(struct udev_device *udev_device, const char *sysattr) |
93b0f384 | 1108 | { |
0de33a61 | 1109 | struct udev_list_entry *list_entry; |
93b0f384 | 1110 | char path[UTIL_PATH_SIZE]; |
affed87a | 1111 | char value[4096]; |
93b0f384 KS |
1112 | struct stat statbuf; |
1113 | int fd; | |
1114 | ssize_t size; | |
1115 | const char *val = NULL; | |
1116 | ||
517814e7 KS |
1117 | if (udev_device == NULL) |
1118 | return NULL; | |
69239210 | 1119 | if (sysattr == NULL) |
517814e7 KS |
1120 | return NULL; |
1121 | ||
0518da3b | 1122 | /* look for possibly already cached result */ |
69239210 KS |
1123 | udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_device->sysattr_list)) { |
1124 | if (strcmp(udev_list_entry_get_name(list_entry), sysattr) == 0) { | |
86b57788 KS |
1125 | dbg(udev_device->udev, "got '%s' (%s) from cache\n", |
1126 | sysattr, udev_list_entry_get_value(list_entry)); | |
0de33a61 | 1127 | return udev_list_entry_get_value(list_entry); |
0518da3b KS |
1128 | } |
1129 | } | |
1130 | ||
065db052 | 1131 | util_strscpyl(path, sizeof(path), udev_device_get_syspath(udev_device), "/", sysattr, NULL); |
93b0f384 | 1132 | if (lstat(path, &statbuf) != 0) { |
86b57788 | 1133 | dbg(udev_device->udev, "no attribute '%s', keep negative entry\n", path); |
69239210 | 1134 | udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list, sysattr, NULL, 0, 0); |
93b0f384 KS |
1135 | goto out; |
1136 | } | |
1137 | ||
1138 | if (S_ISLNK(statbuf.st_mode)) { | |
93b0f384 KS |
1139 | char target[UTIL_NAME_SIZE]; |
1140 | int len; | |
1141 | char *pos; | |
1142 | ||
096e59ed KS |
1143 | /* some core links return the last element of the target path */ |
1144 | if (strcmp(sysattr, "driver") != 0 && | |
1145 | strcmp(sysattr, "subsystem") != 0 && | |
1146 | strcmp(sysattr, "module") != 0) | |
1147 | goto out; | |
1148 | ||
93b0f384 | 1149 | len = readlink(path, target, sizeof(target)); |
60067cc7 KS |
1150 | if (len <= 0 || len == sizeof(target)) |
1151 | goto out; | |
1152 | target[len] = '\0'; | |
1153 | ||
1154 | pos = strrchr(target, '/'); | |
1155 | if (pos != NULL) { | |
1156 | pos = &pos[1]; | |
1157 | dbg(udev_device->udev, "cache '%s' with link value '%s'\n", sysattr, pos); | |
1158 | list_entry = udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list, sysattr, pos, 0, 0); | |
1159 | val = udev_list_entry_get_value(list_entry); | |
93b0f384 | 1160 | } |
60067cc7 | 1161 | |
93b0f384 KS |
1162 | goto out; |
1163 | } | |
1164 | ||
1165 | /* skip directories */ | |
1166 | if (S_ISDIR(statbuf.st_mode)) | |
1167 | goto out; | |
1168 | ||
1169 | /* skip non-readable files */ | |
1170 | if ((statbuf.st_mode & S_IRUSR) == 0) | |
1171 | goto out; | |
1172 | ||
1173 | /* read attribute value */ | |
0c5c4804 | 1174 | fd = open(path, O_RDONLY|O_CLOEXEC); |
93b0f384 | 1175 | if (fd < 0) { |
86b57788 | 1176 | dbg(udev_device->udev, "attribute '%s' can not be opened\n", path); |
93b0f384 KS |
1177 | goto out; |
1178 | } | |
1179 | size = read(fd, value, sizeof(value)); | |
1180 | close(fd); | |
1181 | if (size < 0) | |
1182 | goto out; | |
1183 | if (size == sizeof(value)) | |
1184 | goto out; | |
1185 | ||
0518da3b | 1186 | /* got a valid value, store it in cache and return it */ |
93b0f384 KS |
1187 | value[size] = '\0'; |
1188 | util_remove_trailing_chars(value, '\n'); | |
86b57788 | 1189 | dbg(udev_device->udev, "'%s' has attribute value '%s'\n", path, value); |
69239210 | 1190 | list_entry = udev_list_entry_add(udev_device->udev, &udev_device->sysattr_list, sysattr, value, 0, 0); |
0de33a61 | 1191 | val = udev_list_entry_get_value(list_entry); |
93b0f384 KS |
1192 | out: |
1193 | return val; | |
1194 | } | |
517814e7 | 1195 | |
8cd2e972 | 1196 | int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath) |
11d543c1 | 1197 | { |
8753fadf | 1198 | const char *pos; |
517814e7 | 1199 | size_t len; |
8753fadf | 1200 | |
8cd2e972 | 1201 | free(udev_device->syspath); |
8753fadf KS |
1202 | udev_device->syspath = strdup(syspath); |
1203 | if (udev_device->syspath == NULL) | |
11d543c1 KS |
1204 | return -ENOMEM; |
1205 | udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))]; | |
9a997ecf | 1206 | udev_device_add_property(udev_device, "DEVPATH", udev_device->devpath); |
517814e7 | 1207 | |
8753fadf KS |
1208 | pos = strrchr(udev_device->syspath, '/'); |
1209 | if (pos == NULL) | |
1210 | return -EINVAL; | |
517814e7 KS |
1211 | udev_device->sysname = strdup(&pos[1]); |
1212 | if (udev_device->sysname == NULL) | |
1213 | return -ENOMEM; | |
1214 | ||
1215 | /* some devices have '!' in their name, change that to '/' */ | |
1216 | len = 0; | |
1217 | while (udev_device->sysname[len] != '\0') { | |
1218 | if (udev_device->sysname[len] == '!') | |
1219 | udev_device->sysname[len] = '/'; | |
1220 | len++; | |
1221 | } | |
1222 | ||
1223 | /* trailing number */ | |
babcf3cb | 1224 | while (len > 0 && isdigit(udev_device->sysname[--len])) |
517814e7 | 1225 | udev_device->sysnum = &udev_device->sysname[len]; |
babcf3cb AJ |
1226 | |
1227 | /* sysname is completely numeric */ | |
1228 | if (len == 0) | |
1229 | udev_device->sysnum = NULL; | |
1230 | ||
11d543c1 KS |
1231 | return 0; |
1232 | } | |
1233 | ||
8cd2e972 | 1234 | int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem) |
11d543c1 | 1235 | { |
979ff016 | 1236 | free(udev_device->subsystem); |
11d543c1 KS |
1237 | udev_device->subsystem = strdup(subsystem); |
1238 | if (udev_device->subsystem == NULL) | |
9a997ecf | 1239 | return -ENOMEM; |
28460195 | 1240 | udev_device->subsystem_set = true; |
9a997ecf | 1241 | udev_device_add_property(udev_device, "SUBSYSTEM", udev_device->subsystem); |
11d543c1 KS |
1242 | return 0; |
1243 | } | |
1244 | ||
bf8b2ae1 MH |
1245 | int udev_device_set_devtype(struct udev_device *udev_device, const char *devtype) |
1246 | { | |
1247 | free(udev_device->devtype); | |
1248 | udev_device->devtype = strdup(devtype); | |
1249 | if (udev_device->devtype == NULL) | |
1250 | return -ENOMEM; | |
28460195 | 1251 | udev_device->devtype_set = true; |
bf8b2ae1 MH |
1252 | udev_device_add_property(udev_device, "DEVTYPE", udev_device->devtype); |
1253 | return 0; | |
1254 | } | |
1255 | ||
8cd2e972 | 1256 | int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode) |
11d543c1 | 1257 | { |
517814e7 | 1258 | free(udev_device->devnode); |
99214844 KS |
1259 | udev_device->devnode = strdup(devnode); |
1260 | if (udev_device->devnode == NULL) | |
11d543c1 | 1261 | return -ENOMEM; |
979ff016 | 1262 | udev_device_add_property(udev_device, "DEVNAME", udev_device->devnode); |
11d543c1 KS |
1263 | return 0; |
1264 | } | |
1265 | ||
6c29f2b9 | 1266 | int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink, int unique) |
11d543c1 | 1267 | { |
6c29f2b9 KS |
1268 | struct udev_list_entry *list_entry; |
1269 | ||
28460195 | 1270 | udev_device->devlinks_uptodate = false; |
6c29f2b9 KS |
1271 | list_entry = udev_list_entry_add(udev_device->udev, &udev_device->devlinks_list, devlink, NULL, 1, 0); |
1272 | if (list_entry == NULL) | |
11d543c1 | 1273 | return -ENOMEM; |
6c29f2b9 | 1274 | if (unique) |
fbb31cd6 | 1275 | udev_list_entry_set_flags(list_entry, 1); |
11d543c1 KS |
1276 | return 0; |
1277 | } | |
1278 | ||
4281da1f KS |
1279 | const char *udev_device_get_id_filename(struct udev_device *udev_device) |
1280 | { | |
1281 | if (udev_device->id_filename == NULL) { | |
1282 | if (udev_device_get_subsystem(udev_device) == NULL) | |
1283 | return NULL; | |
1284 | ||
1285 | if (major(udev_device_get_devnum(udev_device)) > 0) { | |
1286 | /* use dev_t -- b259:131072, c254:0 */ | |
1287 | if (asprintf(&udev_device->id_filename, "%c%u:%u", | |
1288 | strcmp(udev_device_get_subsystem(udev_device), "block") == 0 ? 'b' : 'c', | |
1289 | major(udev_device_get_devnum(udev_device)), | |
1290 | minor(udev_device_get_devnum(udev_device))) < 0) | |
1291 | udev_device->id_filename = NULL; | |
ff0e1f4e | 1292 | } else if (udev_device_get_ifindex(udev_device) > 0) { |
4281da1f KS |
1293 | /* use netdev ifindex -- n3 */ |
1294 | if (asprintf(&udev_device->id_filename, "n%u", udev_device_get_ifindex(udev_device)) < 0) | |
1295 | udev_device->id_filename = NULL; | |
1296 | } else { | |
1297 | /* | |
1298 | * use $subsys:$syname -- pci:0000:00:1f.2 | |
1299 | * sysname() has '!' translated, get it from devpath | |
1300 | */ | |
1301 | const char *sysname; | |
1302 | sysname = strrchr(udev_device->devpath, '/'); | |
1303 | if (sysname == NULL) | |
1304 | return NULL; | |
1305 | sysname = &sysname[1]; | |
1306 | if (asprintf(&udev_device->id_filename, "+%s:%s", udev_device_get_subsystem(udev_device), sysname) < 0) | |
1307 | udev_device->id_filename = NULL; | |
1308 | } | |
1309 | } | |
1310 | return udev_device->id_filename; | |
1311 | } | |
1312 | ||
48a0170b KS |
1313 | /** |
1314 | * udev_device_get_is_initialized: | |
1315 | * @udev_device: udev device | |
1316 | * | |
1317 | * Check if udev has already handled the device and has set up | |
1318 | * device node permissions and context, or has renamed a network | |
1319 | * device. | |
1320 | * | |
1321 | * For now, this is only implemented for devices with a device node | |
1322 | * or network interfaces. All other devices return 1 here. | |
1323 | * | |
1324 | * Returns: 1 if the device is set up. 0 otherwise. | |
1325 | **/ | |
1326 | int udev_device_get_is_initialized(struct udev_device *udev_device) | |
1327 | { | |
1328 | if (!udev_device->info_loaded) | |
1329 | udev_device_read_db(udev_device); | |
1330 | return udev_device->is_initialized; | |
1331 | } | |
1332 | ||
1333 | void udev_device_set_is_initialized(struct udev_device *udev_device) | |
1334 | { | |
1335 | udev_device->is_initialized = true; | |
1336 | } | |
1337 | ||
28460195 KS |
1338 | int udev_device_add_tag(struct udev_device *udev_device, const char *tag) |
1339 | { | |
1340 | if (strchr(tag, ':') != NULL || strchr(tag, ' ') != NULL) | |
1341 | return -EINVAL; | |
1342 | udev_device->tags_uptodate = false; | |
1343 | if (udev_list_entry_add(udev_device->udev, &udev_device->tags_list, tag, NULL, 1, 0) != NULL) | |
1344 | return 0; | |
1345 | return -ENOMEM; | |
1346 | } | |
1347 | ||
1348 | void udev_device_cleanup_tags_list(struct udev_device *udev_device) | |
1349 | { | |
1350 | udev_device->tags_uptodate = false; | |
1351 | udev_list_cleanup_entries(udev_device->udev, &udev_device->tags_list); | |
1352 | } | |
1353 | ||
f712894d KS |
1354 | /** |
1355 | * udev_device_get_tags_list_entry: | |
1356 | * @udev_device: udev device | |
1357 | * | |
1358 | * Retrieve the list of tags attached to the udev device. The next | |
1359 | * list entry can be retrieved with udev_list_entry_next(), | |
1360 | * which returns #NULL if no more entries exist. The tag string | |
1361 | * can be retrieved from the list entry by udev_list_get_name(). | |
1362 | * | |
1363 | * Returns: the first entry of the tag list | |
1364 | **/ | |
28460195 KS |
1365 | struct udev_list_entry *udev_device_get_tags_list_entry(struct udev_device *udev_device) |
1366 | { | |
65f099c7 KS |
1367 | if (udev_device == NULL) |
1368 | return NULL; | |
28460195 KS |
1369 | return udev_list_get_entry(&udev_device->tags_list); |
1370 | } | |
1371 | ||
1372 | int udev_device_has_tag(struct udev_device *udev_device, const char *tag) | |
1373 | { | |
1374 | struct udev_list_entry *list_entry; | |
1375 | ||
1376 | if (!udev_device->info_loaded) | |
1377 | udev_device_read_db(udev_device); | |
1378 | list_entry = udev_device_get_tags_list_entry(udev_device); | |
1379 | list_entry = udev_list_entry_get_by_name(list_entry, tag); | |
1380 | if (list_entry != NULL) | |
1381 | return 1; | |
1382 | return 0; | |
1383 | } | |
1384 | ||
6493e655 KS |
1385 | #define ENVP_SIZE 128 |
1386 | #define MONITOR_BUF_SIZE 4096 | |
1387 | static int update_envp_monitor_buf(struct udev_device *udev_device) | |
979ff016 | 1388 | { |
6493e655 | 1389 | struct udev_list_entry *list_entry; |
065db052 KS |
1390 | char *s; |
1391 | size_t l; | |
6493e655 | 1392 | unsigned int i; |
979ff016 | 1393 | |
6493e655 KS |
1394 | /* monitor buffer of property strings */ |
1395 | free(udev_device->monitor_buf); | |
1396 | udev_device->monitor_buf_len = 0; | |
1397 | udev_device->monitor_buf = malloc(MONITOR_BUF_SIZE); | |
1398 | if (udev_device->monitor_buf == NULL) | |
1399 | return -ENOMEM; | |
be18918f | 1400 | |
6493e655 | 1401 | /* envp array, strings will point into monitor buffer */ |
427e20b2 KS |
1402 | if (udev_device->envp == NULL) |
1403 | udev_device->envp = malloc(sizeof(char *) * ENVP_SIZE); | |
6493e655 KS |
1404 | if (udev_device->envp == NULL) |
1405 | return -ENOMEM; | |
979ff016 | 1406 | |
6493e655 | 1407 | i = 0; |
065db052 KS |
1408 | s = udev_device->monitor_buf; |
1409 | l = MONITOR_BUF_SIZE; | |
6493e655 | 1410 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) { |
b25a9454 KS |
1411 | const char *key; |
1412 | ||
1413 | key = udev_list_entry_get_name(list_entry); | |
1414 | /* skip private variables */ | |
1415 | if (key[0] == '.') | |
1416 | continue; | |
1417 | ||
6493e655 | 1418 | /* add string to envp array */ |
065db052 | 1419 | udev_device->envp[i++] = s; |
6493e655 KS |
1420 | if (i+1 >= ENVP_SIZE) |
1421 | return -EINVAL; | |
c2654402 | 1422 | |
6493e655 | 1423 | /* add property string to monitor buffer */ |
b25a9454 | 1424 | l = util_strpcpyl(&s, l, key, "=", udev_list_entry_get_value(list_entry), NULL); |
065db052 | 1425 | if (l == 0) |
c2654402 | 1426 | return -EINVAL; |
ecd42de2 | 1427 | /* advance past the trailing '\0' that util_strpcpyl() guarantees */ |
065db052 | 1428 | s++; |
ecd42de2 | 1429 | l--; |
c2654402 | 1430 | } |
6493e655 | 1431 | udev_device->envp[i] = NULL; |
065db052 | 1432 | udev_device->monitor_buf_len = s - udev_device->monitor_buf; |
28460195 | 1433 | udev_device->envp_uptodate = true; |
065db052 KS |
1434 | dbg(udev_device->udev, "filled envp/monitor buffer, %u properties, %zu bytes\n", |
1435 | i, udev_device->monitor_buf_len); | |
6493e655 KS |
1436 | return 0; |
1437 | } | |
1438 | ||
1439 | char **udev_device_get_properties_envp(struct udev_device *udev_device) | |
1440 | { | |
1441 | if (!udev_device->envp_uptodate) | |
c6243a41 | 1442 | if (update_envp_monitor_buf(udev_device) != 0) |
6493e655 KS |
1443 | return NULL; |
1444 | return udev_device->envp; | |
1445 | } | |
1446 | ||
1447 | ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf) | |
1448 | { | |
1449 | if (!udev_device->envp_uptodate) | |
c6243a41 | 1450 | if (update_envp_monitor_buf(udev_device) != 0) |
6493e655 | 1451 | return -EINVAL; |
c2654402 | 1452 | *buf = udev_device->monitor_buf; |
c2654402 KS |
1453 | return udev_device->monitor_buf_len; |
1454 | } | |
1455 | ||
8cd2e972 | 1456 | int udev_device_set_action(struct udev_device *udev_device, const char *action) |
c4f5f942 | 1457 | { |
517814e7 | 1458 | free(udev_device->action); |
c4f5f942 KS |
1459 | udev_device->action = strdup(action); |
1460 | if (udev_device->action == NULL) | |
1461 | return -ENOMEM; | |
31f4b036 | 1462 | udev_device_add_property(udev_device, "ACTION", udev_device->action); |
c4f5f942 KS |
1463 | return 0; |
1464 | } | |
1465 | ||
8cd2e972 | 1466 | int udev_device_set_driver(struct udev_device *udev_device, const char *driver) |
c4f5f942 | 1467 | { |
979ff016 | 1468 | free(udev_device->driver); |
c4f5f942 KS |
1469 | udev_device->driver = strdup(driver); |
1470 | if (udev_device->driver == NULL) | |
1471 | return -ENOMEM; | |
28460195 | 1472 | udev_device->driver_set = true; |
31f4b036 | 1473 | udev_device_add_property(udev_device, "DRIVER", udev_device->driver); |
c4f5f942 KS |
1474 | return 0; |
1475 | } | |
1476 | ||
8cd2e972 | 1477 | const char *udev_device_get_devpath_old(struct udev_device *udev_device) |
c4f5f942 | 1478 | { |
c4f5f942 KS |
1479 | return udev_device->devpath_old; |
1480 | } | |
1481 | ||
8cd2e972 | 1482 | int udev_device_set_devpath_old(struct udev_device *udev_device, const char *devpath_old) |
c4f5f942 | 1483 | { |
2ffc9cc1 KS |
1484 | const char *pos; |
1485 | size_t len; | |
1486 | ||
a71369b0 | 1487 | free(udev_device->devpath_old); |
c4f5f942 KS |
1488 | udev_device->devpath_old = strdup(devpath_old); |
1489 | if (udev_device->devpath_old == NULL) | |
1490 | return -ENOMEM; | |
31f4b036 | 1491 | udev_device_add_property(udev_device, "DEVPATH_OLD", udev_device->devpath_old); |
2ffc9cc1 KS |
1492 | |
1493 | pos = strrchr(udev_device->devpath_old, '/'); | |
1494 | if (pos == NULL) | |
1495 | return -EINVAL; | |
1496 | udev_device->sysname_old = strdup(&pos[1]); | |
1497 | if (udev_device->sysname_old == NULL) | |
1498 | return -ENOMEM; | |
1499 | ||
1500 | /* some devices have '!' in their name, change that to '/' */ | |
1501 | len = 0; | |
1502 | while (udev_device->sysname_old[len] != '\0') { | |
1503 | if (udev_device->sysname_old[len] == '!') | |
1504 | udev_device->sysname_old[len] = '/'; | |
1505 | len++; | |
1506 | } | |
c4f5f942 KS |
1507 | return 0; |
1508 | } | |
1509 | ||
2ffc9cc1 KS |
1510 | const char *udev_device_get_sysname_old(struct udev_device *udev_device) |
1511 | { | |
1512 | if (udev_device == NULL) | |
1513 | return NULL; | |
1514 | return udev_device->sysname_old; | |
1515 | } | |
1516 | ||
cb14f454 KS |
1517 | const char *udev_device_get_knodename(struct udev_device *udev_device) |
1518 | { | |
1519 | return udev_device->knodename; | |
1520 | } | |
1521 | ||
1522 | int udev_device_set_knodename(struct udev_device *udev_device, const char *knodename) | |
1523 | { | |
a71369b0 | 1524 | free(udev_device->knodename); |
cb14f454 KS |
1525 | udev_device->knodename = strdup(knodename); |
1526 | if (udev_device->knodename == NULL) | |
1527 | return -ENOMEM; | |
24d10766 KS |
1528 | /* do not overwrite the udev property with the kernel property */ |
1529 | if (udev_device->devnode == NULL) | |
1530 | udev_device_add_property(udev_device, "DEVNAME", udev_device->knodename); | |
cb14f454 KS |
1531 | return 0; |
1532 | } | |
1533 | ||
8cd2e972 | 1534 | int udev_device_get_timeout(struct udev_device *udev_device) |
c4f5f942 | 1535 | { |
c4f5f942 KS |
1536 | return udev_device->timeout; |
1537 | } | |
1538 | ||
8cd2e972 | 1539 | int udev_device_set_timeout(struct udev_device *udev_device, int timeout) |
c4f5f942 KS |
1540 | { |
1541 | udev_device->timeout = timeout; | |
1542 | return 0; | |
1543 | } | |
8cd2e972 | 1544 | int udev_device_get_event_timeout(struct udev_device *udev_device) |
99214844 KS |
1545 | { |
1546 | if (!udev_device->info_loaded) | |
28460195 | 1547 | udev_device_read_db(udev_device); |
99214844 KS |
1548 | return udev_device->event_timeout; |
1549 | } | |
1550 | ||
8cd2e972 | 1551 | int udev_device_set_event_timeout(struct udev_device *udev_device, int event_timeout) |
99214844 | 1552 | { |
4281da1f KS |
1553 | char num[32]; |
1554 | ||
99214844 | 1555 | udev_device->event_timeout = event_timeout; |
4281da1f KS |
1556 | snprintf(num, sizeof(num), "%u", event_timeout); |
1557 | udev_device_add_property(udev_device, "TIMEOUT", num); | |
99214844 KS |
1558 | return 0; |
1559 | } | |
c4f5f942 | 1560 | |
8cd2e972 | 1561 | int udev_device_set_seqnum(struct udev_device *udev_device, unsigned long long int seqnum) |
37372bbc | 1562 | { |
31f4b036 KS |
1563 | char num[32]; |
1564 | ||
37372bbc | 1565 | udev_device->seqnum = seqnum; |
31f4b036 KS |
1566 | snprintf(num, sizeof(num), "%llu", seqnum); |
1567 | udev_device_add_property(udev_device, "SEQNUM", num); | |
37372bbc KS |
1568 | return 0; |
1569 | } | |
1570 | ||
8cd2e972 | 1571 | int udev_device_set_devnum(struct udev_device *udev_device, dev_t devnum) |
c4f5f942 | 1572 | { |
31f4b036 KS |
1573 | char num[32]; |
1574 | ||
c4f5f942 | 1575 | udev_device->devnum = devnum; |
31f4b036 KS |
1576 | |
1577 | snprintf(num, sizeof(num), "%u", major(devnum)); | |
1578 | udev_device_add_property(udev_device, "MAJOR", num); | |
1579 | snprintf(num, sizeof(num), "%u", minor(devnum)); | |
1580 | udev_device_add_property(udev_device, "MINOR", num); | |
c4f5f942 KS |
1581 | return 0; |
1582 | } | |
6bd1c78a | 1583 | |
8cd2e972 | 1584 | int udev_device_get_devlink_priority(struct udev_device *udev_device) |
6bd1c78a | 1585 | { |
99214844 | 1586 | if (!udev_device->info_loaded) |
28460195 | 1587 | udev_device_read_db(udev_device); |
e88a82b5 | 1588 | return udev_device->devlink_priority; |
6bd1c78a KS |
1589 | } |
1590 | ||
8cd2e972 | 1591 | int udev_device_set_devlink_priority(struct udev_device *udev_device, int prio) |
6bd1c78a | 1592 | { |
e88a82b5 KS |
1593 | udev_device->devlink_priority = prio; |
1594 | return 0; | |
6bd1c78a KS |
1595 | } |
1596 | ||
d7ce7539 SJR |
1597 | int udev_device_get_watch_handle(struct udev_device *udev_device) |
1598 | { | |
1599 | if (!udev_device->info_loaded) | |
28460195 | 1600 | udev_device_read_db(udev_device); |
d7ce7539 SJR |
1601 | return udev_device->watch_handle; |
1602 | } | |
1603 | ||
1604 | int udev_device_set_watch_handle(struct udev_device *udev_device, int handle) | |
1605 | { | |
1606 | udev_device->watch_handle = handle; | |
1607 | return 0; | |
1608 | } | |
fc416258 KS |
1609 | |
1610 | int udev_device_get_ifindex(struct udev_device *udev_device) | |
1611 | { | |
ff0e1f4e KS |
1612 | if (!udev_device->info_loaded) |
1613 | udev_device_read_uevent_file(udev_device); | |
fc416258 KS |
1614 | return udev_device->ifindex; |
1615 | } | |
1616 | ||
1617 | int udev_device_set_ifindex(struct udev_device *udev_device, int ifindex) | |
1618 | { | |
4281da1f KS |
1619 | char num[32]; |
1620 | ||
fc416258 | 1621 | udev_device->ifindex = ifindex; |
4281da1f KS |
1622 | snprintf(num, sizeof(num), "%u", ifindex); |
1623 | udev_device_add_property(udev_device, "IFINDEX", num); | |
fc416258 KS |
1624 | return 0; |
1625 | } |