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Commit | Line | Data |
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be9b51f6 | 1 | /* |
55e9959b | 2 | * Copyright (C) 2004-2008 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> |
492e76c9 KS |
28 | #include <sys/stat.h> |
29 | #include <sys/types.h> | |
be9b51f6 | 30 | |
869fc2f1 | 31 | #include "udev.h" |
be9b51f6 | 32 | |
93b0f384 | 33 | static void print_all_attributes(struct udev_device *device, const char *key) |
be9b51f6 | 34 | { |
1aa1e248 KS |
35 | DIR *dir; |
36 | struct dirent *dent; | |
37 | ||
93b0f384 | 38 | dir = opendir(udev_device_get_syspath(device)); |
1aa1e248 KS |
39 | if (dir != NULL) { |
40 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
492e76c9 | 41 | struct stat statbuf; |
17fcfb59 | 42 | char filename[UTIL_PATH_SIZE]; |
93b0f384 | 43 | const char *value; |
1aa1e248 KS |
44 | size_t len; |
45 | ||
492e76c9 KS |
46 | if (dent->d_name[0] == '.') |
47 | continue; | |
48 | ||
e9b64770 KS |
49 | if (strcmp(dent->d_name, "uevent") == 0) |
50 | continue; | |
4c46d72a KS |
51 | if (strcmp(dent->d_name, "dev") == 0) |
52 | continue; | |
e9b64770 | 53 | |
93b0f384 | 54 | util_strlcpy(filename, udev_device_get_syspath(device), sizeof(filename)); |
31c1f537 KS |
55 | util_strlcat(filename, "/", sizeof(filename)); |
56 | util_strlcat(filename, dent->d_name, sizeof(filename)); | |
492e76c9 KS |
57 | if (lstat(filename, &statbuf) != 0) |
58 | continue; | |
59 | if (S_ISLNK(statbuf.st_mode)) | |
60 | continue; | |
61 | ||
93b0f384 KS |
62 | value = udev_device_get_attr_value(device, dent->d_name); |
63 | if (value == NULL) | |
1aa1e248 | 64 | continue; |
7d563a17 | 65 | dbg(udev, "attr '%s'='%s'(%zi)\n", dent->d_name, value, len); |
1aa1e248 | 66 | |
1aa1e248 | 67 | /* skip nonprintable attributes */ |
93b0f384 KS |
68 | len = strlen(value); |
69 | while (len > 0 && isprint(value[len-1])) | |
1aa1e248 | 70 | len--; |
93b0f384 KS |
71 | if (len > 0) { |
72 | dbg(info, "attribute value of '%s' non-printable, skip\n", dent->d_name); | |
1aa1e248 KS |
73 | continue; |
74 | } | |
6276fdd2 | 75 | |
95776dc6 | 76 | printf(" %s{%s}==\"%s\"\n", key, dent->d_name, value); |
6276fdd2 | 77 | } |
4ad3a37f | 78 | closedir(dir); |
be9b51f6 KS |
79 | } |
80 | printf("\n"); | |
be9b51f6 KS |
81 | } |
82 | ||
93b0f384 | 83 | static int print_device_chain(struct udev_device *device) |
87171e46 | 84 | { |
b2d9e4f2 | 85 | struct udev_device *device_parent; |
4ad3a37f | 86 | const char *str; |
e48fc108 | 87 | |
1aa1e248 | 88 | printf("\n" |
6cf19e52 KS |
89 | "Udevinfo starts with the device specified by the devpath and then\n" |
90 | "walks up the chain of parent devices. It prints for every device\n" | |
91 | "found, all possible attributes in the udev rules key format.\n" | |
92 | "A rule to match, can be composed by the attributes of the device\n" | |
93 | "and the attributes from one single parent device.\n" | |
dba8c18b | 94 | "\n"); |
f61d732a | 95 | |
4ad3a37f KS |
96 | printf(" looking at device '%s':\n", udev_device_get_devpath(device)); |
97 | printf(" KERNEL==\"%s\"\n", udev_device_get_sysname(device)); | |
98 | str = udev_device_get_subsystem(device); | |
99 | if (str == NULL) | |
100 | str = ""; | |
101 | printf(" SUBSYSTEM==\"%s\"\n", str); | |
102 | str = udev_device_get_driver(device); | |
103 | if (str == NULL) | |
104 | str = ""; | |
105 | printf(" DRIVER==\"%s\"\n", str); | |
93b0f384 | 106 | print_all_attributes(device, "ATTR"); |
4ad3a37f | 107 | |
b2d9e4f2 KS |
108 | device_parent = device; |
109 | do { | |
110 | device_parent = udev_device_get_parent(device_parent); | |
4ad3a37f | 111 | if (device_parent == NULL) |
034f35d7 | 112 | break; |
b2d9e4f2 KS |
113 | printf(" looking at parent device '%s':\n", udev_device_get_devpath(device_parent)); |
114 | printf(" KERNELS==\"%s\"\n", udev_device_get_sysname(device_parent)); | |
115 | str = udev_device_get_subsystem(device_parent); | |
4ad3a37f KS |
116 | if (str == NULL) |
117 | str = ""; | |
118 | printf(" SUBSYSTEMS==\"%s\"\n", str); | |
b2d9e4f2 | 119 | str = udev_device_get_driver(device_parent); |
4ad3a37f KS |
120 | if (str == NULL) |
121 | str = ""; | |
122 | printf(" DRIVERS==\"%s\"\n", str); | |
93b0f384 | 123 | print_all_attributes(device_parent, "ATTRS"); |
b2d9e4f2 | 124 | } while (device_parent != NULL); |
be9b51f6 | 125 | |
1aa1e248 KS |
126 | return 0; |
127 | } | |
128 | ||
93b0f384 | 129 | static void print_record(struct udev_device *device) |
31de3a2b | 130 | { |
93b0f384 KS |
131 | size_t len; |
132 | int i; | |
0de33a61 | 133 | struct udev_list_entry *list_entry; |
93b0f384 KS |
134 | |
135 | printf("P: %s\n", udev_device_get_devpath(device)); | |
bf7ad0ea | 136 | |
93b0f384 | 137 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); |
fb762bb9 | 138 | printf("N: %s\n", &udev_device_get_devnode(device)[len+1]); |
bf7ad0ea | 139 | |
93b0f384 KS |
140 | i = device_get_devlink_priority(device); |
141 | if (i != 0) | |
142 | printf("L: %i\n", i); | |
bf7ad0ea | 143 | |
93b0f384 KS |
144 | i = device_get_num_fake_partitions(device); |
145 | if (i != 0) | |
146 | printf("A:%u\n", i); | |
bf7ad0ea | 147 | |
93b0f384 KS |
148 | i = device_get_ignore_remove(device); |
149 | if (i != 0) | |
150 | printf("R:%u\n", i); | |
93b0f384 | 151 | |
0de33a61 | 152 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) { |
bf7ad0ea | 153 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); |
0de33a61 | 154 | printf("S: %s\n", &udev_list_entry_get_name(list_entry)[len+1]); |
31de3a2b | 155 | } |
93b0f384 | 156 | |
0de33a61 KS |
157 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) |
158 | printf("E: %s=%s\n", | |
159 | udev_list_entry_get_name(list_entry), | |
160 | udev_list_entry_get_value(list_entry)); | |
93b0f384 | 161 | |
bf7ad0ea | 162 | printf("\n"); |
31de3a2b KS |
163 | } |
164 | ||
d1acfc3e | 165 | static int stat_device(const char *name, int export, const char *prefix) |
f338bac8 KS |
166 | { |
167 | struct stat statbuf; | |
168 | ||
169 | if (stat(name, &statbuf) != 0) | |
170 | return -1; | |
171 | ||
d1acfc3e KS |
172 | if (export) { |
173 | if (prefix == NULL) | |
174 | prefix = "INFO_"; | |
175 | printf("%sMAJOR=%d\n" | |
176 | "%sMINOR=%d\n", | |
177 | prefix, major(statbuf.st_dev), | |
178 | prefix, minor(statbuf.st_dev)); | |
179 | } else | |
cce9d773 | 180 | printf("%d:%d\n", major(statbuf.st_dev), minor(statbuf.st_dev)); |
f338bac8 KS |
181 | return 0; |
182 | } | |
183 | ||
bf7ad0ea KS |
184 | static int export_devices(struct udev *udev) |
185 | { | |
186 | struct udev_enumerate *enumerate; | |
0de33a61 | 187 | struct udev_list_entry *list_entry; |
bf7ad0ea | 188 | |
bc8184ed | 189 | enumerate = udev_enumerate_new_from_devices(udev, NULL); |
bf7ad0ea KS |
190 | if (enumerate == NULL) |
191 | return -1; | |
0de33a61 | 192 | udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) { |
bf7ad0ea KS |
193 | struct udev_device *device; |
194 | ||
0de33a61 | 195 | device = udev_device_new_from_syspath(udev, udev_list_entry_get_name(list_entry)); |
bf7ad0ea KS |
196 | if (device != NULL) { |
197 | if (udev_device_get_devnode(device) != NULL) | |
198 | print_record(device); | |
199 | udev_device_unref(device); | |
200 | } | |
bf7ad0ea KS |
201 | } |
202 | udev_enumerate_unref(enumerate); | |
203 | return 0; | |
204 | } | |
205 | ||
7d563a17 | 206 | int udevadm_info(struct udev *udev, int argc, char *argv[]) |
87171e46 | 207 | { |
93b0f384 | 208 | struct udev_device *device = NULL; |
87171e46 | 209 | int root = 0; |
d1acfc3e KS |
210 | int export = 0; |
211 | const char *export_prefix = NULL; | |
93b0f384 KS |
212 | char path[UTIL_PATH_SIZE]; |
213 | char name[UTIL_PATH_SIZE]; | |
0de33a61 | 214 | struct udev_list_entry *list_entry; |
93b0f384 | 215 | int rc = 0; |
24ca5c33 | 216 | |
e97717ba | 217 | static const struct option options[] = { |
11f1bb5a KS |
218 | { "name", 1, NULL, 'n' }, |
219 | { "path", 1, NULL, 'p' }, | |
220 | { "query", 1, NULL, 'q' }, | |
221 | { "attribute-walk", 0, NULL, 'a' }, | |
222 | { "export-db", 0, NULL, 'e' }, | |
223 | { "root", 0, NULL, 'r' }, | |
f338bac8 | 224 | { "device-id-of-file", 1, NULL, 'd' }, |
d1acfc3e KS |
225 | { "export", 0, NULL, 'x' }, |
226 | { "export-prefix", 1, NULL, 'P' }, | |
88caa9da | 227 | { "version", 0, NULL, 1 }, /* -V outputs braindead format */ |
11f1bb5a KS |
228 | { "help", 0, NULL, 'h' }, |
229 | {} | |
230 | }; | |
231 | ||
24ca5c33 KS |
232 | enum action_type { |
233 | ACTION_NONE, | |
234 | ACTION_QUERY, | |
235 | ACTION_ATTRIBUTE_WALK, | |
236 | ACTION_ROOT, | |
f338bac8 | 237 | ACTION_DEVICE_ID_FILE, |
24ca5c33 KS |
238 | } action = ACTION_NONE; |
239 | ||
b8476286 KS |
240 | enum query_type { |
241 | QUERY_NONE, | |
242 | QUERY_NAME, | |
243 | QUERY_PATH, | |
244 | QUERY_SYMLINK, | |
245 | QUERY_ENV, | |
246 | QUERY_ALL, | |
247 | } query = QUERY_NONE; | |
24ca5c33 | 248 | |
87171e46 | 249 | while (1) { |
7d563a17 | 250 | int option; |
bf7ad0ea | 251 | struct stat statbuf; |
7d563a17 | 252 | |
d1acfc3e | 253 | option = getopt_long(argc, argv, "aed:n:p:q:rxPVh", options, NULL); |
87171e46 KS |
254 | if (option == -1) |
255 | break; | |
256 | ||
7d563a17 | 257 | dbg(udev, "option '%c'\n", option); |
87171e46 KS |
258 | switch (option) { |
259 | case 'n': | |
93b0f384 KS |
260 | if (device != NULL) { |
261 | fprintf(stderr, "device already specified\n"); | |
262 | rc = 2; | |
263 | goto exit; | |
264 | } | |
2362eea6 | 265 | /* remove /dev if given */ |
bf7ad0ea KS |
266 | if (strncmp(optarg, udev_get_dev_path(udev), strlen(udev_get_dev_path(udev))) != 0) { |
267 | util_strlcpy(name, udev_get_dev_path(udev), sizeof(name)); | |
268 | util_strlcat(name, "/", sizeof(name)); | |
269 | util_strlcat(name, optarg, sizeof(name)); | |
270 | } else { | |
31c1f537 | 271 | util_strlcpy(name, optarg, sizeof(name)); |
bf7ad0ea | 272 | } |
ecc9ec57 | 273 | util_remove_trailing_chars(name, '/'); |
bf7ad0ea KS |
274 | if (stat(name, &statbuf) < 0) { |
275 | fprintf(stderr, "device node not found\n"); | |
276 | rc = 2; | |
277 | goto exit; | |
278 | } else { | |
279 | char type; | |
280 | ||
281 | if (S_ISBLK(statbuf.st_mode)) { | |
282 | type = 'b'; | |
283 | } else if (S_ISCHR(statbuf.st_mode)) { | |
284 | type = 'c'; | |
285 | } else { | |
286 | fprintf(stderr, "device node has wrong file type\n"); | |
287 | rc = 2; | |
288 | goto exit; | |
289 | } | |
290 | device = udev_device_new_from_devnum(udev, type, statbuf.st_rdev); | |
291 | if (device == NULL) { | |
292 | fprintf(stderr, "device node not found\n"); | |
293 | rc = 2; | |
294 | goto exit; | |
295 | } | |
296 | } | |
87171e46 | 297 | break; |
87171e46 | 298 | case 'p': |
93b0f384 KS |
299 | if (device != NULL) { |
300 | fprintf(stderr, "device already specified\n"); | |
301 | rc = 2; | |
302 | goto exit; | |
303 | } | |
bc8184ed | 304 | /* add sys dir if needed */ |
8753fadf KS |
305 | if (strncmp(optarg, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0) { |
306 | util_strlcpy(path, udev_get_sys_path(udev), sizeof(path)); | |
307 | util_strlcat(path, optarg, sizeof(path)); | |
308 | } else { | |
31c1f537 | 309 | util_strlcpy(path, optarg, sizeof(path)); |
8753fadf | 310 | } |
ecc9ec57 | 311 | util_remove_trailing_chars(path, '/'); |
8753fadf | 312 | device = udev_device_new_from_syspath(udev, path); |
bf7ad0ea KS |
313 | if (device == NULL) { |
314 | fprintf(stderr, "device path not found\n"); | |
315 | rc = 2; | |
316 | goto exit; | |
317 | } | |
87171e46 | 318 | break; |
87171e46 | 319 | case 'q': |
24ca5c33 | 320 | action = ACTION_QUERY; |
87171e46 | 321 | if (strcmp(optarg, "name") == 0) { |
b8476286 | 322 | query = QUERY_NAME; |
87171e46 KS |
323 | break; |
324 | } | |
87171e46 | 325 | if (strcmp(optarg, "symlink") == 0) { |
b8476286 | 326 | query = QUERY_SYMLINK; |
87171e46 KS |
327 | break; |
328 | } | |
87171e46 | 329 | if (strcmp(optarg, "path") == 0) { |
b8476286 KS |
330 | query = QUERY_PATH; |
331 | break; | |
332 | } | |
b8476286 KS |
333 | if (strcmp(optarg, "env") == 0) { |
334 | query = QUERY_ENV; | |
87171e46 KS |
335 | break; |
336 | } | |
8ea84a8a | 337 | if (strcmp(optarg, "all") == 0) { |
b8476286 | 338 | query = QUERY_ALL; |
8ea84a8a KS |
339 | break; |
340 | } | |
61b1b706 | 341 | fprintf(stderr, "unknown query type\n"); |
1aa1e248 | 342 | rc = 2; |
e48fc108 | 343 | goto exit; |
87171e46 | 344 | case 'r': |
24ca5c33 KS |
345 | if (action == ACTION_NONE) |
346 | action = ACTION_ROOT; | |
87171e46 KS |
347 | root = 1; |
348 | break; | |
f338bac8 KS |
349 | case 'd': |
350 | action = ACTION_DEVICE_ID_FILE; | |
31c1f537 | 351 | util_strlcpy(name, optarg, sizeof(name)); |
f338bac8 | 352 | break; |
87171e46 | 353 | case 'a': |
24ca5c33 | 354 | action = ACTION_ATTRIBUTE_WALK; |
87171e46 | 355 | break; |
24ca5c33 | 356 | case 'e': |
bf7ad0ea | 357 | export_devices(udev); |
e48fc108 | 358 | goto exit; |
d1acfc3e KS |
359 | case 'x': |
360 | export = 1; | |
361 | break; | |
362 | case 'P': | |
363 | export_prefix = optarg; | |
364 | break; | |
88caa9da | 365 | case 1: |
01618658 | 366 | printf("%s\n", VERSION); |
88caa9da | 367 | goto exit; |
87171e46 | 368 | case 'V': |
01618658 | 369 | printf("udevinfo, version %s\n", VERSION); |
e48fc108 | 370 | goto exit; |
87171e46 | 371 | case 'h': |
225cb03b | 372 | printf("Usage: udevadm info OPTIONS\n" |
cd42b50d | 373 | " --query=<type> query device information:\n" |
f338bac8 KS |
374 | " name name of device node\n" |
375 | " symlink pointing to node\n" | |
cd42b50d | 376 | " path sys device path\n" |
f338bac8 KS |
377 | " env the device related imported environment\n" |
378 | " all all values\n" | |
cd42b50d KS |
379 | " --path=<syspath> sys device path used for query or attribute walk\n" |
380 | " --name=<name> node or symlink name used for query or attribute walk\n" | |
381 | " --root prepend dev directory to path names\n" | |
382 | " --attribute-walk print all key matches while walking along the chain\n" | |
f338bac8 | 383 | " of parent devices\n" |
cd42b50d | 384 | " --device-id-of-file=<file> print major:minor of device containing this file\n" |
f338bac8 KS |
385 | " --export-db export the content of the udev database\n" |
386 | " --help print this text\n" | |
e3396a2d KS |
387 | "\n"); |
388 | goto exit; | |
87171e46 | 389 | default: |
24ca5c33 | 390 | goto exit; |
87171e46 KS |
391 | } |
392 | } | |
393 | ||
24ca5c33 KS |
394 | switch (action) { |
395 | case ACTION_QUERY: | |
93b0f384 | 396 | if (device == NULL) { |
9a8047fa | 397 | fprintf(stderr, "query needs a valid device specified by --path= or --name=\n"); |
1aa1e248 | 398 | rc = 4; |
24ca5c33 | 399 | goto exit; |
87171e46 KS |
400 | } |
401 | ||
87171e46 | 402 | switch(query) { |
b8476286 | 403 | case QUERY_NAME: |
93b0f384 | 404 | if (root) { |
fb762bb9 | 405 | printf("%s\n", udev_device_get_devnode(device)); |
93b0f384 KS |
406 | } else { |
407 | size_t len; | |
18770246 | 408 | |
93b0f384 | 409 | len = strlen(udev_get_dev_path(udev)); |
fb762bb9 | 410 | printf("%s\n", &udev_device_get_devnode(device)[len+1]); |
18770246 | 411 | } |
24ca5c33 | 412 | break; |
93b0f384 | 413 | case QUERY_SYMLINK: |
0de33a61 KS |
414 | list_entry = udev_device_get_devlinks_list_entry(device); |
415 | while (list_entry != NULL) { | |
bf7ad0ea | 416 | if (root) { |
0de33a61 | 417 | printf("%s", udev_list_entry_get_name(list_entry)); |
bf7ad0ea KS |
418 | } else { |
419 | size_t len; | |
420 | ||
421 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); | |
0de33a61 | 422 | printf("%s", &udev_list_entry_get_name(list_entry)[len+1]); |
bf7ad0ea | 423 | } |
0de33a61 KS |
424 | list_entry = udev_list_entry_get_next(list_entry); |
425 | if (list_entry != NULL) | |
bf7ad0ea KS |
426 | printf(" "); |
427 | } | |
428 | printf("\n"); | |
93b0f384 | 429 | break; |
b8476286 | 430 | case QUERY_PATH: |
93b0f384 | 431 | printf("%s\n", udev_device_get_devpath(device)); |
e48fc108 | 432 | goto exit; |
b8476286 | 433 | case QUERY_ENV: |
0de33a61 KS |
434 | list_entry = udev_device_get_properties_list_entry(device); |
435 | while (list_entry != NULL) { | |
436 | printf("%s=%s\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry)); | |
437 | list_entry = udev_list_entry_get_next(list_entry); | |
bf7ad0ea | 438 | } |
24ca5c33 | 439 | break; |
b8476286 | 440 | case QUERY_ALL: |
93b0f384 | 441 | print_record(device); |
24ca5c33 | 442 | break; |
87171e46 | 443 | default: |
e3396a2d | 444 | fprintf(stderr, "unknown query type\n"); |
24ca5c33 | 445 | break; |
87171e46 | 446 | } |
24ca5c33 KS |
447 | break; |
448 | case ACTION_ATTRIBUTE_WALK: | |
93b0f384 | 449 | if (device == NULL) { |
9a8047fa | 450 | fprintf(stderr, "query needs a valid device specified by --path= or --name=\n"); |
1aa0c52b KS |
451 | rc = 5; |
452 | goto exit; | |
453 | } | |
93b0f384 | 454 | print_device_chain(device); |
24ca5c33 | 455 | break; |
f338bac8 | 456 | case ACTION_DEVICE_ID_FILE: |
d1acfc3e | 457 | if (stat_device(name, export, export_prefix) != 0) |
f338bac8 KS |
458 | rc = 6; |
459 | break; | |
24ca5c33 | 460 | case ACTION_ROOT: |
7d563a17 | 461 | printf("%s\n", udev_get_dev_path(udev)); |
24ca5c33 KS |
462 | break; |
463 | default: | |
e3396a2d | 464 | fprintf(stderr, "missing option\n"); |
1aa1e248 | 465 | rc = 1; |
24ca5c33 | 466 | break; |
87171e46 KS |
467 | } |
468 | ||
e48fc108 | 469 | exit: |
93b0f384 | 470 | udev_device_unref(device); |
1aa1e248 | 471 | return rc; |
87171e46 | 472 | } |