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