]>
Commit | Line | Data |
---|---|---|
be9b51f6 | 1 | /* |
27b77df4 | 2 | * Copyright (C) 2004-2006 Kay Sievers <kay.sievers@vrfy.org> |
be9b51f6 | 3 | * |
be9b51f6 KS |
4 | * This program is free software; you can redistribute it and/or modify it |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation version 2 of the License. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along | |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
27b77df4 | 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
be9b51f6 KS |
16 | * |
17 | */ | |
18 | ||
19 | #include <stdlib.h> | |
20 | #include <string.h> | |
21 | #include <stdio.h> | |
1aa1e248 | 22 | #include <stddef.h> |
034f35d7 | 23 | #include <ctype.h> |
87171e46 KS |
24 | #include <stdarg.h> |
25 | #include <unistd.h> | |
1aa1e248 | 26 | #include <dirent.h> |
87171e46 | 27 | #include <errno.h> |
11f1bb5a | 28 | #include <getopt.h> |
492e76c9 KS |
29 | #include <sys/stat.h> |
30 | #include <sys/types.h> | |
be9b51f6 | 31 | |
869fc2f1 | 32 | #include "udev.h" |
be9b51f6 | 33 | |
95776dc6 | 34 | static void print_all_attributes(const char *devpath, const char *key) |
be9b51f6 | 35 | { |
1aa1e248 KS |
36 | char path[PATH_SIZE]; |
37 | DIR *dir; | |
38 | struct dirent *dent; | |
39 | ||
40 | strlcpy(path, sysfs_path, sizeof(path)); | |
41 | strlcat(path, devpath, sizeof(path)); | |
42 | ||
43 | dir = opendir(path); | |
44 | if (dir != NULL) { | |
45 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
492e76c9 KS |
46 | struct stat statbuf; |
47 | char filename[PATH_SIZE]; | |
1aa1e248 KS |
48 | char *attr_value; |
49 | char value[NAME_SIZE]; | |
50 | size_t len; | |
51 | ||
492e76c9 KS |
52 | if (dent->d_name[0] == '.') |
53 | continue; | |
54 | ||
e9b64770 KS |
55 | if (strcmp(dent->d_name, "uevent") == 0) |
56 | continue; | |
4c46d72a KS |
57 | if (strcmp(dent->d_name, "dev") == 0) |
58 | continue; | |
e9b64770 | 59 | |
492e76c9 KS |
60 | strlcpy(filename, path, sizeof(filename)); |
61 | strlcat(filename, "/", sizeof(filename)); | |
62 | strlcat(filename, dent->d_name, sizeof(filename)); | |
63 | if (lstat(filename, &statbuf) != 0) | |
64 | continue; | |
65 | if (S_ISLNK(statbuf.st_mode)) | |
66 | continue; | |
67 | ||
1aa1e248 KS |
68 | attr_value = sysfs_attr_get_value(devpath, dent->d_name); |
69 | if (attr_value == NULL) | |
70 | continue; | |
71 | len = strlcpy(value, attr_value, sizeof(value)); | |
1f7a36f2 MM |
72 | if(len >= sizeof(value)) |
73 | len = sizeof(value) - 1; | |
c70560fe | 74 | dbg("attr '%s'='%s'(%zi)\n", dent->d_name, value, len); |
1aa1e248 KS |
75 | |
76 | /* remove trailing newlines */ | |
77 | while (len && value[len-1] == '\n') | |
78 | value[--len] = '\0'; | |
79 | ||
80 | /* skip nonprintable attributes */ | |
81 | while (len && isprint(value[len-1])) | |
82 | len--; | |
83 | if (len) { | |
c70560fe | 84 | dbg("attribute value of '%s' non-printable, skip\n", dent->d_name); |
1aa1e248 KS |
85 | continue; |
86 | } | |
6276fdd2 | 87 | |
95776dc6 | 88 | printf(" %s{%s}==\"%s\"\n", key, dent->d_name, value); |
6276fdd2 | 89 | } |
be9b51f6 KS |
90 | } |
91 | printf("\n"); | |
be9b51f6 KS |
92 | } |
93 | ||
1aa1e248 | 94 | static int print_device_chain(const char *devpath) |
87171e46 | 95 | { |
1aa1e248 | 96 | struct sysfs_device *dev; |
e48fc108 | 97 | |
bc2a89fa KS |
98 | dev = sysfs_device_get(devpath); |
99 | if (dev == NULL) | |
100 | return -1; | |
101 | ||
1aa1e248 | 102 | printf("\n" |
6cf19e52 KS |
103 | "Udevinfo starts with the device specified by the devpath and then\n" |
104 | "walks up the chain of parent devices. It prints for every device\n" | |
105 | "found, all possible attributes in the udev rules key format.\n" | |
106 | "A rule to match, can be composed by the attributes of the device\n" | |
107 | "and the attributes from one single parent device.\n" | |
dba8c18b | 108 | "\n"); |
f61d732a | 109 | |
1aa1e248 | 110 | printf(" looking at device '%s':\n", dev->devpath); |
95776dc6 | 111 | printf(" KERNEL==\"%s\"\n", dev->kernel); |
1aa1e248 | 112 | printf(" SUBSYSTEM==\"%s\"\n", dev->subsystem); |
22f5934a | 113 | printf(" DRIVER==\"%s\"\n", dev->driver); |
95776dc6 | 114 | print_all_attributes(dev->devpath, "ATTR"); |
034f35d7 | 115 | |
1aa1e248 KS |
116 | /* walk up the chain of devices */ |
117 | while (1) { | |
118 | dev = sysfs_device_get_parent(dev); | |
119 | if (dev == NULL) | |
034f35d7 | 120 | break; |
6cf19e52 | 121 | printf(" looking at parent device '%s':\n", dev->devpath); |
95776dc6 | 122 | printf(" KERNELS==\"%s\"\n", dev->kernel); |
64e0ce85 | 123 | printf(" SUBSYSTEMS==\"%s\"\n", dev->subsystem); |
95776dc6 | 124 | printf(" DRIVERS==\"%s\"\n", dev->driver); |
1aa1e248 | 125 | |
95776dc6 | 126 | print_all_attributes(dev->devpath, "ATTRS"); |
be9b51f6 KS |
127 | } |
128 | ||
1aa1e248 KS |
129 | return 0; |
130 | } | |
131 | ||
132 | static void print_record(struct udevice *udev) | |
133 | { | |
134 | struct name_entry *name_loop; | |
135 | ||
136 | printf("P: %s\n", udev->dev->devpath); | |
137 | printf("N: %s\n", udev->name); | |
138 | list_for_each_entry(name_loop, &udev->symlink_list, node) | |
139 | printf("S: %s\n", name_loop->name); | |
019d6669 KS |
140 | if (udev->link_priority != 0) |
141 | printf("L: %i\n", udev->link_priority); | |
142 | if (udev->partitions != 0) | |
143 | printf("A:%u\n", udev->partitions); | |
144 | if (udev->ignore_remove) | |
145 | printf("R:%u\n", udev->ignore_remove); | |
1aa1e248 KS |
146 | list_for_each_entry(name_loop, &udev->env_list, node) |
147 | printf("E: %s\n", name_loop->name); | |
be9b51f6 | 148 | } |
87171e46 | 149 | |
3045132a | 150 | static void export_db(void) { |
db481105 KS |
151 | LIST_HEAD(name_list); |
152 | struct name_entry *name_loop; | |
db481105 KS |
153 | |
154 | udev_db_get_all_entries(&name_list); | |
fb179207 | 155 | list_for_each_entry(name_loop, &name_list, node) { |
1aa1e248 | 156 | struct udevice *udev_db; |
db481105 | 157 | |
31de3a2b | 158 | udev_db = udev_device_init(NULL); |
1aa1e248 KS |
159 | if (udev_db == NULL) |
160 | continue; | |
161 | if (udev_db_get_device(udev_db, name_loop->name) == 0) | |
3045132a KS |
162 | print_record(udev_db); |
163 | printf("\n"); | |
1aa1e248 | 164 | udev_device_cleanup(udev_db); |
db481105 | 165 | } |
fb179207 | 166 | name_list_cleanup(&name_list); |
9fe1a96d KS |
167 | } |
168 | ||
31de3a2b KS |
169 | static int lookup_device_by_name(struct udevice *udev, const char *name) |
170 | { | |
171 | LIST_HEAD(name_list); | |
be8594ab | 172 | int count; |
31de3a2b KS |
173 | struct name_entry *device; |
174 | int rc = -1; | |
175 | ||
be8594ab KS |
176 | count = udev_db_get_devices_by_name(name, &name_list); |
177 | if (count <= 0) | |
31de3a2b KS |
178 | goto out; |
179 | ||
c70560fe | 180 | info("found %i devices for '%s'\n", count, name); |
be8594ab KS |
181 | |
182 | /* select the device that seems to match */ | |
31de3a2b KS |
183 | list_for_each_entry(device, &name_list, node) { |
184 | char filename[PATH_SIZE]; | |
185 | struct stat statbuf; | |
186 | ||
187 | udev_device_init(udev); | |
188 | if (udev_db_get_device(udev, device->name) != 0) | |
189 | continue; | |
c70560fe | 190 | info("found db entry '%s'\n", device->name); |
31de3a2b | 191 | |
be8594ab | 192 | /* make sure, we don't get a link of a differnt device */ |
31de3a2b KS |
193 | strlcpy(filename, udev_root, sizeof(filename)); |
194 | strlcat(filename, "/", sizeof(filename)); | |
195 | strlcat(filename, name, sizeof(filename)); | |
196 | if (stat(filename, &statbuf) != 0) | |
197 | continue; | |
be8594ab | 198 | if (major(udev->devt) > 0 && udev->devt != statbuf.st_rdev) { |
c70560fe | 199 | info("skip '%s', dev_t doesn't match\n", udev->name); |
be8594ab | 200 | continue; |
31de3a2b | 201 | } |
be8594ab KS |
202 | rc = 0; |
203 | break; | |
31de3a2b KS |
204 | } |
205 | out: | |
206 | name_list_cleanup(&name_list); | |
207 | return rc; | |
208 | } | |
209 | ||
f338bac8 KS |
210 | static int stat_device(const char *name) |
211 | { | |
212 | struct stat statbuf; | |
213 | ||
214 | if (stat(name, &statbuf) != 0) | |
215 | return -1; | |
216 | ||
f338bac8 KS |
217 | printf("%d %d\n", major(statbuf.st_dev), minor(statbuf.st_dev)); |
218 | return 0; | |
219 | } | |
220 | ||
225cb03b | 221 | int udevinfo(int argc, char *argv[], char *envp[]) |
87171e46 | 222 | { |
87171e46 | 223 | int option; |
1aa1e248 | 224 | struct udevice *udev; |
87171e46 | 225 | int root = 0; |
24ca5c33 | 226 | |
e97717ba | 227 | static const struct option options[] = { |
11f1bb5a KS |
228 | { "name", 1, NULL, 'n' }, |
229 | { "path", 1, NULL, 'p' }, | |
230 | { "query", 1, NULL, 'q' }, | |
231 | { "attribute-walk", 0, NULL, 'a' }, | |
232 | { "export-db", 0, NULL, 'e' }, | |
233 | { "root", 0, NULL, 'r' }, | |
f338bac8 | 234 | { "device-id-of-file", 1, NULL, 'd' }, |
88caa9da | 235 | { "version", 0, NULL, 1 }, /* -V outputs braindead format */ |
11f1bb5a KS |
236 | { "help", 0, NULL, 'h' }, |
237 | {} | |
238 | }; | |
239 | ||
24ca5c33 KS |
240 | enum action_type { |
241 | ACTION_NONE, | |
242 | ACTION_QUERY, | |
243 | ACTION_ATTRIBUTE_WALK, | |
244 | ACTION_ROOT, | |
f338bac8 | 245 | ACTION_DEVICE_ID_FILE, |
24ca5c33 KS |
246 | } action = ACTION_NONE; |
247 | ||
b8476286 KS |
248 | enum query_type { |
249 | QUERY_NONE, | |
250 | QUERY_NAME, | |
251 | QUERY_PATH, | |
252 | QUERY_SYMLINK, | |
253 | QUERY_ENV, | |
254 | QUERY_ALL, | |
255 | } query = QUERY_NONE; | |
24ca5c33 | 256 | |
63f61c5c KS |
257 | char path[PATH_SIZE] = ""; |
258 | char name[PATH_SIZE] = ""; | |
e48fc108 | 259 | struct name_entry *name_loop; |
1aa1e248 | 260 | int rc = 0; |
e48fc108 KS |
261 | |
262 | logging_init("udevinfo"); | |
1aa1e248 KS |
263 | udev_config_init(); |
264 | sysfs_init(); | |
265 | ||
31de3a2b | 266 | udev = udev_device_init(NULL); |
1aa1e248 KS |
267 | if (udev == NULL) { |
268 | rc = 1; | |
269 | goto exit; | |
270 | } | |
87171e46 | 271 | |
87171e46 | 272 | while (1) { |
f338bac8 | 273 | option = getopt_long(argc, argv, "aed:n:p:q:rVh", options, NULL); |
87171e46 KS |
274 | if (option == -1) |
275 | break; | |
276 | ||
c70560fe | 277 | dbg("option '%c'\n", option); |
87171e46 KS |
278 | switch (option) { |
279 | case 'n': | |
2362eea6 KS |
280 | /* remove /dev if given */ |
281 | if (strncmp(optarg, udev_root, strlen(udev_root)) == 0) | |
282 | strlcpy(name, &optarg[strlen(udev_root)+1], sizeof(name)); | |
283 | else | |
284 | strlcpy(name, optarg, sizeof(name)); | |
e7e194a0 | 285 | remove_trailing_chars(name, '/'); |
c70560fe | 286 | dbg("name: %s\n", name); |
87171e46 | 287 | break; |
87171e46 | 288 | case 'p': |
2362eea6 | 289 | /* remove /sys if given */ |
1aa1e248 KS |
290 | if (strncmp(optarg, sysfs_path, strlen(sysfs_path)) == 0) |
291 | strlcpy(path, &optarg[strlen(sysfs_path)], sizeof(path)); | |
292 | else | |
293 | strlcpy(path, optarg, sizeof(path)); | |
e7e194a0 KS |
294 | remove_trailing_chars(path, '/'); |
295 | ||
296 | /* possibly resolve to real devpath */ | |
297 | if (sysfs_resolve_link(path, sizeof(path)) != 0) { | |
298 | char temp[PATH_SIZE]; | |
299 | char *pos; | |
300 | ||
301 | /* also check if the parent is a link */ | |
302 | strlcpy(temp, path, sizeof(temp)); | |
303 | pos = strrchr(temp, '/'); | |
304 | if (pos != 0) { | |
305 | char tail[PATH_SIZE]; | |
306 | ||
307 | strlcpy(tail, pos, sizeof(tail)); | |
308 | pos[0] = '\0'; | |
309 | if (sysfs_resolve_link(temp, sizeof(temp)) == 0) { | |
310 | strlcpy(path, temp, sizeof(path)); | |
311 | strlcat(path, tail, sizeof(path)); | |
312 | } | |
313 | } | |
314 | } | |
c70560fe | 315 | dbg("path: %s\n", path); |
87171e46 | 316 | break; |
87171e46 | 317 | case 'q': |
24ca5c33 | 318 | action = ACTION_QUERY; |
87171e46 | 319 | if (strcmp(optarg, "name") == 0) { |
b8476286 | 320 | query = QUERY_NAME; |
87171e46 KS |
321 | break; |
322 | } | |
87171e46 | 323 | if (strcmp(optarg, "symlink") == 0) { |
b8476286 | 324 | query = QUERY_SYMLINK; |
87171e46 KS |
325 | break; |
326 | } | |
87171e46 | 327 | if (strcmp(optarg, "path") == 0) { |
b8476286 KS |
328 | query = QUERY_PATH; |
329 | break; | |
330 | } | |
b8476286 KS |
331 | if (strcmp(optarg, "env") == 0) { |
332 | query = QUERY_ENV; | |
87171e46 KS |
333 | break; |
334 | } | |
8ea84a8a | 335 | if (strcmp(optarg, "all") == 0) { |
b8476286 | 336 | query = QUERY_ALL; |
8ea84a8a KS |
337 | break; |
338 | } | |
61b1b706 | 339 | fprintf(stderr, "unknown query type\n"); |
1aa1e248 | 340 | rc = 2; |
e48fc108 | 341 | goto exit; |
87171e46 | 342 | case 'r': |
24ca5c33 KS |
343 | if (action == ACTION_NONE) |
344 | action = ACTION_ROOT; | |
87171e46 KS |
345 | root = 1; |
346 | break; | |
f338bac8 KS |
347 | case 'd': |
348 | action = ACTION_DEVICE_ID_FILE; | |
349 | strlcpy(name, optarg, sizeof(name)); | |
350 | break; | |
87171e46 | 351 | case 'a': |
24ca5c33 | 352 | action = ACTION_ATTRIBUTE_WALK; |
87171e46 | 353 | break; |
24ca5c33 | 354 | case 'e': |
3045132a | 355 | export_db(); |
e48fc108 | 356 | goto exit; |
88caa9da KS |
357 | case 1: |
358 | printf("%s\n", UDEV_VERSION); | |
359 | goto exit; | |
87171e46 | 360 | case 'V': |
869fc2f1 | 361 | printf("udevinfo, version %s\n", UDEV_VERSION); |
e48fc108 | 362 | goto exit; |
87171e46 | 363 | case 'h': |
225cb03b | 364 | printf("Usage: udevadm info OPTIONS\n" |
f338bac8 KS |
365 | " --query=<type> query database for the specified value:\n" |
366 | " name name of device node\n" | |
367 | " symlink pointing to node\n" | |
368 | " path sysfs device path\n" | |
369 | " env the device related imported environment\n" | |
370 | " all all values\n" | |
371 | " --path=<devpath> sysfs device path used for query or chain\n" | |
372 | " --name=<name> node or symlink name used for query\n" | |
373 | " --root prepend to query result or print udev_root\n" | |
374 | " --attribute-walk print all key matches while walking along chain\n" | |
375 | " of parent devices\n" | |
376 | " --device-id-of-file=<file> print major/minor of underlying device\n" | |
377 | " --export-db export the content of the udev database\n" | |
378 | " --help print this text\n" | |
e3396a2d KS |
379 | "\n"); |
380 | goto exit; | |
87171e46 | 381 | default: |
24ca5c33 | 382 | goto exit; |
87171e46 KS |
383 | } |
384 | } | |
385 | ||
24ca5c33 KS |
386 | /* run action */ |
387 | switch (action) { | |
388 | case ACTION_QUERY: | |
2362eea6 | 389 | /* needs devpath or node/symlink name for query */ |
87171e46 | 390 | if (path[0] != '\0') { |
2362eea6 KS |
391 | if (udev_db_get_device(udev, path) != 0) { |
392 | fprintf(stderr, "no record for '%s' in database\n", path); | |
1aa1e248 | 393 | rc = 3; |
87171e46 KS |
394 | goto exit; |
395 | } | |
24ca5c33 | 396 | } else if (name[0] != '\0') { |
31de3a2b | 397 | if (lookup_device_by_name(udev, name) != 0) { |
2362eea6 KS |
398 | fprintf(stderr, "node name not found\n"); |
399 | rc = 4; | |
87171e46 KS |
400 | goto exit; |
401 | } | |
24ca5c33 | 402 | } else { |
11f1bb5a | 403 | fprintf(stderr, "query needs --path or node --name specified\n"); |
1aa1e248 | 404 | rc = 4; |
24ca5c33 | 405 | goto exit; |
87171e46 KS |
406 | } |
407 | ||
87171e46 | 408 | switch(query) { |
b8476286 | 409 | case QUERY_NAME: |
e48fc108 | 410 | if (root) |
1aa1e248 | 411 | printf("%s/%s\n", udev_root, udev->name); |
e48fc108 | 412 | else |
1aa1e248 | 413 | printf("%s\n", udev->name); |
24ca5c33 | 414 | break; |
b8476286 | 415 | case QUERY_SYMLINK: |
18770246 KS |
416 | list_for_each_entry(name_loop, &udev->symlink_list, node) { |
417 | char c = name_loop->node.next != &udev->symlink_list ? ' ' : '\n'; | |
418 | ||
419 | if (root) | |
420 | printf("%s/%s%c", udev_root, name_loop->name, c); | |
421 | else | |
422 | printf("%s%c", name_loop->name, c); | |
423 | } | |
24ca5c33 | 424 | break; |
b8476286 | 425 | case QUERY_PATH: |
1aa1e248 | 426 | printf("%s\n", udev->dev->devpath); |
e48fc108 | 427 | goto exit; |
b8476286 | 428 | case QUERY_ENV: |
1aa1e248 | 429 | list_for_each_entry(name_loop, &udev->env_list, node) |
b8476286 | 430 | printf("%s\n", name_loop->name); |
24ca5c33 | 431 | break; |
b8476286 | 432 | case QUERY_ALL: |
1aa1e248 | 433 | print_record(udev); |
24ca5c33 | 434 | break; |
87171e46 | 435 | default: |
e3396a2d | 436 | fprintf(stderr, "unknown query type\n"); |
24ca5c33 | 437 | break; |
87171e46 | 438 | } |
24ca5c33 KS |
439 | break; |
440 | case ACTION_ATTRIBUTE_WALK: | |
1aa0c52b | 441 | if (path[0] != '\0') { |
bc2a89fa | 442 | if (print_device_chain(path) != 0) { |
fd807192 | 443 | fprintf(stderr, "no valid sysfs device found\n"); |
bc2a89fa KS |
444 | rc = 4; |
445 | goto exit; | |
446 | } | |
1aa0c52b | 447 | } else if (name[0] != '\0') { |
31de3a2b | 448 | if (lookup_device_by_name(udev, name) != 0) { |
1aa0c52b KS |
449 | fprintf(stderr, "node name not found\n"); |
450 | rc = 4; | |
451 | goto exit; | |
452 | } | |
31de3a2b | 453 | if (print_device_chain(udev->dev->devpath) != 0) { |
fd807192 | 454 | fprintf(stderr, "no valid sysfs device found\n"); |
bc2a89fa KS |
455 | rc = 4; |
456 | goto exit; | |
457 | } | |
1aa0c52b | 458 | } else { |
11f1bb5a | 459 | fprintf(stderr, "attribute walk needs --path or node --name specified\n"); |
1aa0c52b KS |
460 | rc = 5; |
461 | goto exit; | |
462 | } | |
24ca5c33 | 463 | break; |
f338bac8 KS |
464 | case ACTION_DEVICE_ID_FILE: |
465 | if (stat_device(name) != 0) | |
466 | rc = 6; | |
467 | break; | |
24ca5c33 | 468 | case ACTION_ROOT: |
87171e46 | 469 | printf("%s\n", udev_root); |
24ca5c33 KS |
470 | break; |
471 | default: | |
e3396a2d | 472 | fprintf(stderr, "missing option\n"); |
1aa1e248 | 473 | rc = 1; |
24ca5c33 | 474 | break; |
87171e46 KS |
475 | } |
476 | ||
e48fc108 | 477 | exit: |
1aa1e248 KS |
478 | udev_device_cleanup(udev); |
479 | sysfs_cleanup(); | |
7257cb18 | 480 | logging_close(); |
1aa1e248 | 481 | return rc; |
87171e46 | 482 | } |