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Commit | Line | Data |
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be9b51f6 | 1 | /* |
fc206fbe | 2 | * Copyright (C) 2004-2009 Kay Sievers <kay.sievers@vrfy.org> |
be9b51f6 | 3 | * |
55e9959b KS |
4 | * This program is free software: you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation, either version 2 of the License, or | |
7 | * (at your option) any later version. | |
be9b51f6 | 8 | * |
55e9959b KS |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
be9b51f6 KS |
16 | */ |
17 | ||
18 | #include <stdlib.h> | |
19 | #include <string.h> | |
20 | #include <stdio.h> | |
1aa1e248 | 21 | #include <stddef.h> |
034f35d7 | 22 | #include <ctype.h> |
87171e46 KS |
23 | #include <stdarg.h> |
24 | #include <unistd.h> | |
1aa1e248 | 25 | #include <dirent.h> |
87171e46 | 26 | #include <errno.h> |
11f1bb5a | 27 | #include <getopt.h> |
e6c1a2bd | 28 | #include <fcntl.h> |
492e76c9 KS |
29 | #include <sys/stat.h> |
30 | #include <sys/types.h> | |
be9b51f6 | 31 | |
869fc2f1 | 32 | #include "udev.h" |
be9b51f6 | 33 | |
20bee04c KS |
34 | static bool skip_attribute(const char *name) |
35 | { | |
912541b0 KS |
36 | static const char const *skip[] = { |
37 | "uevent", | |
38 | "dev", | |
39 | "modalias", | |
40 | "resource", | |
41 | "driver", | |
42 | "subsystem", | |
43 | "module", | |
44 | }; | |
45 | unsigned int i; | |
46 | ||
8fef0ff2 | 47 | for (i = 0; i < ELEMENTSOF(skip); i++) |
912541b0 KS |
48 | if (strcmp(name, skip[i]) == 0) |
49 | return true; | |
50 | return false; | |
20bee04c KS |
51 | } |
52 | ||
93b0f384 | 53 | static void print_all_attributes(struct udev_device *device, const char *key) |
be9b51f6 | 54 | { |
912541b0 KS |
55 | struct udev_list_entry *sysattr; |
56 | ||
57 | udev_list_entry_foreach(sysattr, udev_device_get_sysattr_list_entry(device)) { | |
58 | const char *name; | |
59 | const char *value; | |
60 | size_t len; | |
61 | ||
62 | name = udev_list_entry_get_name(sysattr); | |
63 | if (skip_attribute(name)) | |
64 | continue; | |
65 | ||
66 | value = udev_device_get_sysattr_value(device, name); | |
67 | if (value == NULL) | |
68 | continue; | |
912541b0 KS |
69 | |
70 | /* skip any values that look like a path */ | |
71 | if (value[0] == '/') | |
72 | continue; | |
73 | ||
74 | /* skip nonprintable attributes */ | |
75 | len = strlen(value); | |
76 | while (len > 0 && isprint(value[len-1])) | |
77 | len--; | |
baa30fbc | 78 | if (len > 0) |
912541b0 | 79 | continue; |
912541b0 KS |
80 | |
81 | printf(" %s{%s}==\"%s\"\n", key, name, value); | |
82 | } | |
83 | printf("\n"); | |
be9b51f6 KS |
84 | } |
85 | ||
93b0f384 | 86 | static int print_device_chain(struct udev_device *device) |
87171e46 | 87 | { |
912541b0 KS |
88 | struct udev_device *device_parent; |
89 | const char *str; | |
90 | ||
91 | printf("\n" | |
92 | "Udevadm info starts with the device specified by the devpath and then\n" | |
93 | "walks up the chain of parent devices. It prints for every device\n" | |
94 | "found, all possible attributes in the udev rules key format.\n" | |
95 | "A rule to match, can be composed by the attributes of the device\n" | |
96 | "and the attributes from one single parent device.\n" | |
97 | "\n"); | |
98 | ||
99 | printf(" looking at device '%s':\n", udev_device_get_devpath(device)); | |
100 | printf(" KERNEL==\"%s\"\n", udev_device_get_sysname(device)); | |
101 | str = udev_device_get_subsystem(device); | |
102 | if (str == NULL) | |
103 | str = ""; | |
104 | printf(" SUBSYSTEM==\"%s\"\n", str); | |
105 | str = udev_device_get_driver(device); | |
106 | if (str == NULL) | |
107 | str = ""; | |
108 | printf(" DRIVER==\"%s\"\n", str); | |
109 | print_all_attributes(device, "ATTR"); | |
110 | ||
111 | device_parent = device; | |
112 | do { | |
113 | device_parent = udev_device_get_parent(device_parent); | |
114 | if (device_parent == NULL) | |
115 | break; | |
116 | printf(" looking at parent device '%s':\n", udev_device_get_devpath(device_parent)); | |
117 | printf(" KERNELS==\"%s\"\n", udev_device_get_sysname(device_parent)); | |
118 | str = udev_device_get_subsystem(device_parent); | |
119 | if (str == NULL) | |
120 | str = ""; | |
121 | printf(" SUBSYSTEMS==\"%s\"\n", str); | |
122 | str = udev_device_get_driver(device_parent); | |
123 | if (str == NULL) | |
124 | str = ""; | |
125 | printf(" DRIVERS==\"%s\"\n", str); | |
126 | print_all_attributes(device_parent, "ATTRS"); | |
127 | } while (device_parent != NULL); | |
128 | ||
129 | return 0; | |
1aa1e248 KS |
130 | } |
131 | ||
93b0f384 | 132 | static void print_record(struct udev_device *device) |
31de3a2b | 133 | { |
912541b0 KS |
134 | size_t len; |
135 | const char *str; | |
136 | int i; | |
137 | struct udev_list_entry *list_entry; | |
138 | ||
139 | printf("P: %s\n", udev_device_get_devpath(device)); | |
140 | ||
141 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); | |
142 | str = udev_device_get_devnode(device); | |
143 | if (str != NULL) | |
144 | printf("N: %s\n", &str[len+1]); | |
145 | ||
146 | i = udev_device_get_devlink_priority(device); | |
147 | if (i != 0) | |
148 | printf("L: %i\n", i); | |
149 | ||
150 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) { | |
151 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); | |
152 | printf("S: %s\n", &udev_list_entry_get_name(list_entry)[len+1]); | |
153 | } | |
154 | ||
155 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) | |
156 | printf("E: %s=%s\n", | |
157 | udev_list_entry_get_name(list_entry), | |
158 | udev_list_entry_get_value(list_entry)); | |
159 | printf("\n"); | |
31de3a2b KS |
160 | } |
161 | ||
88163971 | 162 | static int stat_device(const char *name, bool export, const char *prefix) |
f338bac8 | 163 | { |
912541b0 KS |
164 | struct stat statbuf; |
165 | ||
166 | if (stat(name, &statbuf) != 0) | |
167 | return -1; | |
168 | ||
169 | if (export) { | |
170 | if (prefix == NULL) | |
171 | prefix = "INFO_"; | |
172 | printf("%sMAJOR=%d\n" | |
173 | "%sMINOR=%d\n", | |
174 | prefix, major(statbuf.st_dev), | |
175 | prefix, minor(statbuf.st_dev)); | |
176 | } else | |
177 | printf("%d:%d\n", major(statbuf.st_dev), minor(statbuf.st_dev)); | |
178 | return 0; | |
f338bac8 KS |
179 | } |
180 | ||
bf7ad0ea KS |
181 | static int export_devices(struct udev *udev) |
182 | { | |
912541b0 KS |
183 | struct udev_enumerate *udev_enumerate; |
184 | struct udev_list_entry *list_entry; | |
185 | ||
186 | udev_enumerate = udev_enumerate_new(udev); | |
187 | if (udev_enumerate == NULL) | |
188 | return -1; | |
189 | udev_enumerate_scan_devices(udev_enumerate); | |
190 | udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate)) { | |
191 | struct udev_device *device; | |
192 | ||
193 | device = udev_device_new_from_syspath(udev, udev_list_entry_get_name(list_entry)); | |
194 | if (device != NULL) { | |
195 | print_record(device); | |
196 | udev_device_unref(device); | |
197 | } | |
198 | } | |
199 | udev_enumerate_unref(udev_enumerate); | |
200 | return 0; | |
bf7ad0ea KS |
201 | } |
202 | ||
9ead6627 KS |
203 | static void cleanup_dir(DIR *dir, mode_t mask, int depth) |
204 | { | |
912541b0 KS |
205 | struct dirent *dent; |
206 | ||
207 | if (depth <= 0) | |
208 | return; | |
209 | ||
210 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
211 | struct stat stats; | |
212 | ||
213 | if (dent->d_name[0] == '.') | |
214 | continue; | |
215 | if (fstatat(dirfd(dir), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) != 0) | |
216 | continue; | |
217 | if ((stats.st_mode & mask) != 0) | |
218 | continue; | |
219 | if (S_ISDIR(stats.st_mode)) { | |
220 | DIR *dir2; | |
221 | ||
222 | dir2 = fdopendir(openat(dirfd(dir), dent->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)); | |
223 | if (dir2 != NULL) { | |
224 | cleanup_dir(dir2, mask, depth-1); | |
225 | closedir(dir2); | |
226 | } | |
227 | unlinkat(dirfd(dir), dent->d_name, AT_REMOVEDIR); | |
228 | } else { | |
229 | unlinkat(dirfd(dir), dent->d_name, 0); | |
230 | } | |
231 | } | |
9ead6627 KS |
232 | } |
233 | ||
234 | static void cleanup_db(struct udev *udev) | |
235 | { | |
912541b0 KS |
236 | char filename[UTIL_PATH_SIZE]; |
237 | DIR *dir; | |
238 | ||
239 | util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/queue.bin", NULL); | |
240 | unlink(filename); | |
241 | ||
242 | util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data", NULL); | |
243 | dir = opendir(filename); | |
244 | if (dir != NULL) { | |
245 | cleanup_dir(dir, S_ISVTX, 1); | |
246 | closedir(dir); | |
247 | } | |
248 | ||
249 | util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/links", NULL); | |
250 | dir = opendir(filename); | |
251 | if (dir != NULL) { | |
252 | cleanup_dir(dir, 0, 2); | |
253 | closedir(dir); | |
254 | } | |
255 | ||
256 | util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/tags", NULL); | |
257 | dir = opendir(filename); | |
258 | if (dir != NULL) { | |
259 | cleanup_dir(dir, 0, 2); | |
260 | closedir(dir); | |
261 | } | |
262 | ||
263 | util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/watch", NULL); | |
264 | dir = opendir(filename); | |
265 | if (dir != NULL) { | |
266 | cleanup_dir(dir, 0, 1); | |
267 | closedir(dir); | |
268 | } | |
269 | ||
270 | util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/firmware-missing", NULL); | |
271 | dir = opendir(filename); | |
272 | if (dir != NULL) { | |
273 | cleanup_dir(dir, 0, 1); | |
274 | closedir(dir); | |
275 | } | |
9ead6627 KS |
276 | } |
277 | ||
1985c76e | 278 | static int uinfo(struct udev *udev, int argc, char *argv[]) |
87171e46 | 279 | { |
912541b0 KS |
280 | struct udev_device *device = NULL; |
281 | bool root = 0; | |
282 | bool export = 0; | |
283 | const char *export_prefix = NULL; | |
284 | char path[UTIL_PATH_SIZE]; | |
285 | char name[UTIL_PATH_SIZE]; | |
286 | struct udev_list_entry *list_entry; | |
287 | int rc = 0; | |
288 | ||
289 | static const struct option options[] = { | |
290 | { "name", required_argument, NULL, 'n' }, | |
291 | { "path", required_argument, NULL, 'p' }, | |
292 | { "query", required_argument, NULL, 'q' }, | |
293 | { "attribute-walk", no_argument, NULL, 'a' }, | |
294 | { "cleanup-db", no_argument, NULL, 'c' }, | |
295 | { "export-db", no_argument, NULL, 'e' }, | |
296 | { "root", no_argument, NULL, 'r' }, | |
297 | { "run", no_argument, NULL, 'R' }, | |
298 | { "device-id-of-file", required_argument, NULL, 'd' }, | |
299 | { "export", no_argument, NULL, 'x' }, | |
300 | { "export-prefix", required_argument, NULL, 'P' }, | |
301 | { "version", no_argument, NULL, 'V' }, | |
302 | { "help", no_argument, NULL, 'h' }, | |
303 | {} | |
304 | }; | |
305 | ||
306 | enum action_type { | |
307 | ACTION_NONE, | |
308 | ACTION_QUERY, | |
309 | ACTION_ATTRIBUTE_WALK, | |
310 | ACTION_ROOT, | |
311 | ACTION_DEVICE_ID_FILE, | |
312 | } action = ACTION_NONE; | |
313 | ||
314 | enum query_type { | |
315 | QUERY_NONE, | |
316 | QUERY_NAME, | |
317 | QUERY_PATH, | |
318 | QUERY_SYMLINK, | |
319 | QUERY_PROPERTY, | |
320 | QUERY_ALL, | |
321 | } query = QUERY_NONE; | |
322 | ||
323 | for (;;) { | |
324 | int option; | |
325 | struct stat statbuf; | |
326 | ||
327 | option = getopt_long(argc, argv, "aced:n:p:q:rxP:RVh", options, NULL); | |
328 | if (option == -1) | |
329 | break; | |
330 | ||
912541b0 KS |
331 | switch (option) { |
332 | case 'n': | |
333 | if (device != NULL) { | |
334 | fprintf(stderr, "device already specified\n"); | |
335 | rc = 2; | |
336 | goto exit; | |
337 | } | |
338 | /* remove /dev if given */ | |
339 | if (strncmp(optarg, udev_get_dev_path(udev), strlen(udev_get_dev_path(udev))) != 0) | |
340 | util_strscpyl(name, sizeof(name), udev_get_dev_path(udev), "/", optarg, NULL); | |
341 | else | |
342 | util_strscpy(name, sizeof(name), optarg); | |
343 | util_remove_trailing_chars(name, '/'); | |
344 | if (stat(name, &statbuf) < 0) { | |
345 | fprintf(stderr, "device node not found\n"); | |
346 | rc = 2; | |
347 | goto exit; | |
348 | } else { | |
349 | char type; | |
350 | ||
351 | if (S_ISBLK(statbuf.st_mode)) { | |
352 | type = 'b'; | |
353 | } else if (S_ISCHR(statbuf.st_mode)) { | |
354 | type = 'c'; | |
355 | } else { | |
356 | fprintf(stderr, "device node has wrong file type\n"); | |
357 | rc = 2; | |
358 | goto exit; | |
359 | } | |
360 | device = udev_device_new_from_devnum(udev, type, statbuf.st_rdev); | |
361 | if (device == NULL) { | |
362 | fprintf(stderr, "device node not found\n"); | |
363 | rc = 2; | |
364 | goto exit; | |
365 | } | |
366 | } | |
367 | break; | |
368 | case 'p': | |
369 | if (device != NULL) { | |
370 | fprintf(stderr, "device already specified\n"); | |
371 | rc = 2; | |
372 | goto exit; | |
373 | } | |
374 | /* add sys dir if needed */ | |
375 | if (strncmp(optarg, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0) | |
376 | util_strscpyl(path, sizeof(path), udev_get_sys_path(udev), optarg, NULL); | |
377 | else | |
378 | util_strscpy(path, sizeof(path), optarg); | |
379 | util_remove_trailing_chars(path, '/'); | |
380 | device = udev_device_new_from_syspath(udev, path); | |
381 | if (device == NULL) { | |
382 | fprintf(stderr, "device path not found\n"); | |
383 | rc = 2; | |
384 | goto exit; | |
385 | } | |
386 | break; | |
387 | case 'q': | |
388 | action = ACTION_QUERY; | |
389 | if (strcmp(optarg, "property") == 0 || strcmp(optarg, "env") == 0) { | |
390 | query = QUERY_PROPERTY; | |
391 | } else if (strcmp(optarg, "name") == 0) { | |
392 | query = QUERY_NAME; | |
393 | } else if (strcmp(optarg, "symlink") == 0) { | |
394 | query = QUERY_SYMLINK; | |
395 | } else if (strcmp(optarg, "path") == 0) { | |
396 | query = QUERY_PATH; | |
397 | } else if (strcmp(optarg, "all") == 0) { | |
398 | query = QUERY_ALL; | |
399 | } else { | |
400 | fprintf(stderr, "unknown query type\n"); | |
401 | rc = 3; | |
402 | goto exit; | |
403 | } | |
404 | break; | |
405 | case 'r': | |
406 | if (action == ACTION_NONE) | |
407 | action = ACTION_ROOT; | |
408 | root = true; | |
409 | break; | |
410 | case 'R': | |
411 | printf("%s\n", udev_get_run_path(udev)); | |
412 | goto exit; | |
413 | case 'd': | |
414 | action = ACTION_DEVICE_ID_FILE; | |
415 | util_strscpy(name, sizeof(name), optarg); | |
416 | break; | |
417 | case 'a': | |
418 | action = ACTION_ATTRIBUTE_WALK; | |
419 | break; | |
420 | case 'e': | |
421 | export_devices(udev); | |
422 | goto exit; | |
423 | case 'c': | |
424 | cleanup_db(udev); | |
425 | goto exit; | |
426 | case 'x': | |
427 | export = true; | |
428 | break; | |
429 | case 'P': | |
430 | export_prefix = optarg; | |
431 | break; | |
432 | case 'V': | |
433 | printf("%s\n", VERSION); | |
434 | goto exit; | |
435 | case 'h': | |
436 | printf("Usage: udevadm info OPTIONS\n" | |
437 | " --query=<type> query device information:\n" | |
438 | " name name of device node\n" | |
439 | " symlink pointing to node\n" | |
440 | " path sys device path\n" | |
441 | " property the device properties\n" | |
442 | " all all values\n" | |
443 | " --path=<syspath> sys device path used for query or attribute walk\n" | |
444 | " --name=<name> node or symlink name used for query or attribute walk\n" | |
445 | " --root prepend dev directory to path names\n" | |
446 | " --attribute-walk print all key matches while walking along the chain\n" | |
447 | " of parent devices\n" | |
448 | " --device-id-of-file=<file> print major:minor of device containing this file\n" | |
449 | " --export export key/value pairs\n" | |
450 | " --export-prefix export the key name with a prefix\n" | |
451 | " --export-db export the content of the udev database\n" | |
452 | " --cleanup-db cleanup the udev database\n" | |
453 | " --help\n\n"); | |
454 | goto exit; | |
455 | default: | |
456 | rc = 1; | |
457 | goto exit; | |
458 | } | |
459 | } | |
460 | ||
461 | switch (action) { | |
462 | case ACTION_QUERY: | |
463 | if (device == NULL) { | |
464 | fprintf(stderr, "query needs a valid device specified by --path= or --name=\n"); | |
465 | rc = 4; | |
466 | goto exit; | |
467 | } | |
468 | ||
469 | switch(query) { | |
470 | case QUERY_NAME: { | |
471 | const char *node = udev_device_get_devnode(device); | |
472 | ||
473 | if (node == NULL) { | |
474 | fprintf(stderr, "no device node found\n"); | |
475 | rc = 5; | |
476 | goto exit; | |
477 | } | |
478 | ||
479 | if (root) { | |
480 | printf("%s\n", udev_device_get_devnode(device)); | |
481 | } else { | |
482 | size_t len = strlen(udev_get_dev_path(udev)); | |
483 | ||
484 | printf("%s\n", &udev_device_get_devnode(device)[len+1]); | |
485 | } | |
486 | break; | |
487 | } | |
488 | case QUERY_SYMLINK: | |
489 | list_entry = udev_device_get_devlinks_list_entry(device); | |
490 | while (list_entry != NULL) { | |
491 | if (root) { | |
492 | printf("%s", udev_list_entry_get_name(list_entry)); | |
493 | } else { | |
494 | size_t len; | |
495 | ||
496 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); | |
497 | printf("%s", &udev_list_entry_get_name(list_entry)[len+1]); | |
498 | } | |
499 | list_entry = udev_list_entry_get_next(list_entry); | |
500 | if (list_entry != NULL) | |
501 | printf(" "); | |
502 | } | |
503 | printf("\n"); | |
504 | break; | |
505 | case QUERY_PATH: | |
506 | printf("%s\n", udev_device_get_devpath(device)); | |
507 | goto exit; | |
508 | case QUERY_PROPERTY: | |
509 | list_entry = udev_device_get_properties_list_entry(device); | |
510 | while (list_entry != NULL) { | |
511 | if (export) { | |
512 | const char *prefix = export_prefix; | |
513 | ||
514 | if (prefix == NULL) | |
515 | prefix = ""; | |
516 | printf("%s%s='%s'\n", prefix, | |
517 | udev_list_entry_get_name(list_entry), | |
518 | udev_list_entry_get_value(list_entry)); | |
519 | } else { | |
520 | printf("%s=%s\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry)); | |
521 | } | |
522 | list_entry = udev_list_entry_get_next(list_entry); | |
523 | } | |
524 | break; | |
525 | case QUERY_ALL: | |
526 | print_record(device); | |
527 | break; | |
528 | default: | |
529 | fprintf(stderr, "unknown query type\n"); | |
530 | break; | |
531 | } | |
532 | break; | |
533 | case ACTION_ATTRIBUTE_WALK: | |
534 | if (device == NULL) { | |
535 | fprintf(stderr, "query needs a valid device specified by --path= or --name=\n"); | |
536 | rc = 4; | |
537 | goto exit; | |
538 | } | |
539 | print_device_chain(device); | |
540 | break; | |
541 | case ACTION_DEVICE_ID_FILE: | |
542 | if (stat_device(name, export, export_prefix) != 0) | |
543 | rc = 1; | |
544 | break; | |
545 | case ACTION_ROOT: | |
546 | printf("%s\n", udev_get_dev_path(udev)); | |
547 | break; | |
548 | default: | |
549 | fprintf(stderr, "missing option\n"); | |
550 | rc = 1; | |
551 | break; | |
552 | } | |
87171e46 | 553 | |
e48fc108 | 554 | exit: |
912541b0 KS |
555 | udev_device_unref(device); |
556 | return rc; | |
87171e46 | 557 | } |
1985c76e KS |
558 | |
559 | const struct udevadm_cmd udevadm_info = { | |
912541b0 KS |
560 | .name = "info", |
561 | .cmd = uinfo, | |
562 | .help = "query sysfs or the udev database", | |
1985c76e | 563 | }; |