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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 | { | |
74e8a45e | 36 | static const char const *skip[] = { |
20bee04c KS |
37 | "uevent", |
38 | "dev", | |
39 | "modalias", | |
40 | "resource", | |
41 | "driver", | |
42 | "subsystem", | |
43 | "module", | |
44 | }; | |
45 | unsigned int i; | |
46 | ||
47 | for (i = 0; i < ARRAY_SIZE(skip); i++) | |
48 | if (strcmp(name, skip[i]) == 0) | |
49 | return true; | |
50 | return false; | |
51 | } | |
52 | ||
93b0f384 | 53 | static void print_all_attributes(struct udev_device *device, const char *key) |
be9b51f6 | 54 | { |
95ce1875 | 55 | struct udev_list_entry *sysattr; |
1aa1e248 | 56 | |
95ce1875 | 57 | udev_list_entry_foreach(sysattr, udev_device_get_sysattr_list_entry(device)) { |
20bee04c | 58 | struct udev *udev = udev_device_get_udev(device); |
95ce1875 TE |
59 | const char *name; |
60 | const char *value; | |
61 | size_t len; | |
1aa1e248 | 62 | |
95ce1875 | 63 | name = udev_list_entry_get_name(sysattr); |
20bee04c | 64 | if (skip_attribute(name)) |
95ce1875 | 65 | continue; |
e9b64770 | 66 | |
95ce1875 TE |
67 | value = udev_device_get_sysattr_value(device, name); |
68 | if (value == NULL) | |
69 | continue; | |
20bee04c | 70 | dbg(udev, "attr '%s'='%s'\n", name, value); |
492e76c9 | 71 | |
95ce1875 TE |
72 | /* skip nonprintable attributes */ |
73 | len = strlen(value); | |
74 | while (len > 0 && isprint(value[len-1])) | |
75 | len--; | |
76 | if (len > 0) { | |
20bee04c | 77 | dbg(udev, "attribute value of '%s' non-printable, skip\n", name); |
95ce1875 | 78 | continue; |
6276fdd2 | 79 | } |
95ce1875 TE |
80 | |
81 | printf(" %s{%s}==\"%s\"\n", key, name, value); | |
be9b51f6 KS |
82 | } |
83 | printf("\n"); | |
be9b51f6 KS |
84 | } |
85 | ||
93b0f384 | 86 | static int print_device_chain(struct udev_device *device) |
87171e46 | 87 | { |
b2d9e4f2 | 88 | struct udev_device *device_parent; |
4ad3a37f | 89 | const char *str; |
e48fc108 | 90 | |
1aa1e248 | 91 | printf("\n" |
b620292b | 92 | "Udevadm info starts with the device specified by the devpath and then\n" |
6cf19e52 KS |
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" | |
dba8c18b | 97 | "\n"); |
f61d732a | 98 | |
4ad3a37f KS |
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); | |
93b0f384 | 109 | print_all_attributes(device, "ATTR"); |
4ad3a37f | 110 | |
b2d9e4f2 KS |
111 | device_parent = device; |
112 | do { | |
113 | device_parent = udev_device_get_parent(device_parent); | |
4ad3a37f | 114 | if (device_parent == NULL) |
034f35d7 | 115 | break; |
b2d9e4f2 KS |
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); | |
4ad3a37f KS |
119 | if (str == NULL) |
120 | str = ""; | |
121 | printf(" SUBSYSTEMS==\"%s\"\n", str); | |
b2d9e4f2 | 122 | str = udev_device_get_driver(device_parent); |
4ad3a37f KS |
123 | if (str == NULL) |
124 | str = ""; | |
125 | printf(" DRIVERS==\"%s\"\n", str); | |
93b0f384 | 126 | print_all_attributes(device_parent, "ATTRS"); |
b2d9e4f2 | 127 | } while (device_parent != NULL); |
be9b51f6 | 128 | |
1aa1e248 KS |
129 | return 0; |
130 | } | |
131 | ||
93b0f384 | 132 | static void print_record(struct udev_device *device) |
31de3a2b | 133 | { |
93b0f384 | 134 | size_t len; |
ee137da3 | 135 | const char *str; |
93b0f384 | 136 | int i; |
0de33a61 | 137 | struct udev_list_entry *list_entry; |
93b0f384 KS |
138 | |
139 | printf("P: %s\n", udev_device_get_devpath(device)); | |
bf7ad0ea | 140 | |
93b0f384 | 141 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); |
ee137da3 KS |
142 | str = udev_device_get_devnode(device); |
143 | if (str != NULL) | |
144 | printf("N: %s\n", &str[len+1]); | |
bf7ad0ea | 145 | |
aa8734ff | 146 | i = udev_device_get_devlink_priority(device); |
93b0f384 KS |
147 | if (i != 0) |
148 | printf("L: %i\n", i); | |
bf7ad0ea | 149 | |
0de33a61 | 150 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) { |
bf7ad0ea | 151 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); |
0de33a61 | 152 | printf("S: %s\n", &udev_list_entry_get_name(list_entry)[len+1]); |
31de3a2b | 153 | } |
93b0f384 | 154 | |
0de33a61 KS |
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)); | |
bf7ad0ea | 159 | printf("\n"); |
31de3a2b KS |
160 | } |
161 | ||
88163971 | 162 | static int stat_device(const char *name, bool export, const char *prefix) |
f338bac8 KS |
163 | { |
164 | struct stat statbuf; | |
165 | ||
166 | if (stat(name, &statbuf) != 0) | |
167 | return -1; | |
168 | ||
d1acfc3e KS |
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 | |
cce9d773 | 177 | printf("%d:%d\n", major(statbuf.st_dev), minor(statbuf.st_dev)); |
f338bac8 KS |
178 | return 0; |
179 | } | |
180 | ||
bf7ad0ea KS |
181 | static int export_devices(struct udev *udev) |
182 | { | |
438d4c3c | 183 | struct udev_enumerate *udev_enumerate; |
0de33a61 | 184 | struct udev_list_entry *list_entry; |
bf7ad0ea | 185 | |
438d4c3c KS |
186 | udev_enumerate = udev_enumerate_new(udev); |
187 | if (udev_enumerate == NULL) | |
bf7ad0ea | 188 | return -1; |
c97f839e | 189 | udev_enumerate_scan_devices(udev_enumerate); |
438d4c3c | 190 | udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate)) { |
bf7ad0ea KS |
191 | struct udev_device *device; |
192 | ||
0de33a61 | 193 | device = udev_device_new_from_syspath(udev, udev_list_entry_get_name(list_entry)); |
bf7ad0ea | 194 | if (device != NULL) { |
b38a5801 | 195 | print_record(device); |
bf7ad0ea KS |
196 | udev_device_unref(device); |
197 | } | |
bf7ad0ea | 198 | } |
438d4c3c | 199 | udev_enumerate_unref(udev_enumerate); |
bf7ad0ea KS |
200 | return 0; |
201 | } | |
202 | ||
7d563a17 | 203 | int udevadm_info(struct udev *udev, int argc, char *argv[]) |
87171e46 | 204 | { |
93b0f384 | 205 | struct udev_device *device = NULL; |
88163971 KS |
206 | bool root = 0; |
207 | bool export = 0; | |
d1acfc3e | 208 | const char *export_prefix = NULL; |
93b0f384 KS |
209 | char path[UTIL_PATH_SIZE]; |
210 | char name[UTIL_PATH_SIZE]; | |
0de33a61 | 211 | struct udev_list_entry *list_entry; |
93b0f384 | 212 | int rc = 0; |
24ca5c33 | 213 | |
e97717ba | 214 | static const struct option options[] = { |
033e9f8c KS |
215 | { "name", required_argument, NULL, 'n' }, |
216 | { "path", required_argument, NULL, 'p' }, | |
ff5d99e0 | 217 | { "query", required_argument, NULL, 'q' }, |
033e9f8c KS |
218 | { "attribute-walk", no_argument, NULL, 'a' }, |
219 | { "export-db", no_argument, NULL, 'e' }, | |
220 | { "root", no_argument, NULL, 'r' }, | |
221 | { "device-id-of-file", required_argument, NULL, 'd' }, | |
222 | { "export", no_argument, NULL, 'x' }, | |
223 | { "export-prefix", required_argument, NULL, 'P' }, | |
50025605 | 224 | { "version", no_argument, NULL, 'V' }, |
033e9f8c | 225 | { "help", no_argument, NULL, 'h' }, |
11f1bb5a KS |
226 | {} |
227 | }; | |
228 | ||
24ca5c33 KS |
229 | enum action_type { |
230 | ACTION_NONE, | |
231 | ACTION_QUERY, | |
232 | ACTION_ATTRIBUTE_WALK, | |
233 | ACTION_ROOT, | |
f338bac8 | 234 | ACTION_DEVICE_ID_FILE, |
24ca5c33 KS |
235 | } action = ACTION_NONE; |
236 | ||
b8476286 KS |
237 | enum query_type { |
238 | QUERY_NONE, | |
239 | QUERY_NAME, | |
240 | QUERY_PATH, | |
241 | QUERY_SYMLINK, | |
0254b211 | 242 | QUERY_PROPERTY, |
b8476286 KS |
243 | QUERY_ALL, |
244 | } query = QUERY_NONE; | |
24ca5c33 | 245 | |
88cbfb09 | 246 | for (;;) { |
7d563a17 | 247 | int option; |
bf7ad0ea | 248 | struct stat statbuf; |
7d563a17 | 249 | |
163c0365 | 250 | option = getopt_long(argc, argv, "aed:n:p:q:rxP:Vh", options, NULL); |
87171e46 KS |
251 | if (option == -1) |
252 | break; | |
253 | ||
7d563a17 | 254 | dbg(udev, "option '%c'\n", option); |
87171e46 KS |
255 | switch (option) { |
256 | case 'n': | |
93b0f384 KS |
257 | if (device != NULL) { |
258 | fprintf(stderr, "device already specified\n"); | |
259 | rc = 2; | |
260 | goto exit; | |
261 | } | |
2362eea6 | 262 | /* remove /dev if given */ |
065db052 KS |
263 | if (strncmp(optarg, udev_get_dev_path(udev), strlen(udev_get_dev_path(udev))) != 0) |
264 | util_strscpyl(name, sizeof(name), udev_get_dev_path(udev), "/", optarg, NULL); | |
265 | else | |
266 | util_strscpy(name, sizeof(name), optarg); | |
ecc9ec57 | 267 | util_remove_trailing_chars(name, '/'); |
bf7ad0ea KS |
268 | if (stat(name, &statbuf) < 0) { |
269 | fprintf(stderr, "device node not found\n"); | |
270 | rc = 2; | |
271 | goto exit; | |
272 | } else { | |
273 | char type; | |
274 | ||
275 | if (S_ISBLK(statbuf.st_mode)) { | |
276 | type = 'b'; | |
277 | } else if (S_ISCHR(statbuf.st_mode)) { | |
278 | type = 'c'; | |
279 | } else { | |
280 | fprintf(stderr, "device node has wrong file type\n"); | |
281 | rc = 2; | |
282 | goto exit; | |
283 | } | |
284 | device = udev_device_new_from_devnum(udev, type, statbuf.st_rdev); | |
285 | if (device == NULL) { | |
286 | fprintf(stderr, "device node not found\n"); | |
287 | rc = 2; | |
288 | goto exit; | |
289 | } | |
290 | } | |
87171e46 | 291 | break; |
87171e46 | 292 | case 'p': |
93b0f384 KS |
293 | if (device != NULL) { |
294 | fprintf(stderr, "device already specified\n"); | |
295 | rc = 2; | |
296 | goto exit; | |
297 | } | |
bc8184ed | 298 | /* add sys dir if needed */ |
065db052 KS |
299 | if (strncmp(optarg, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0) |
300 | util_strscpyl(path, sizeof(path), udev_get_sys_path(udev), optarg, NULL); | |
301 | else | |
302 | util_strscpy(path, sizeof(path), optarg); | |
ecc9ec57 | 303 | util_remove_trailing_chars(path, '/'); |
8753fadf | 304 | device = udev_device_new_from_syspath(udev, path); |
bf7ad0ea KS |
305 | if (device == NULL) { |
306 | fprintf(stderr, "device path not found\n"); | |
307 | rc = 2; | |
308 | goto exit; | |
309 | } | |
87171e46 | 310 | break; |
87171e46 | 311 | case 'q': |
24ca5c33 | 312 | action = ACTION_QUERY; |
ff5d99e0 | 313 | if (strcmp(optarg, "property") == 0 || strcmp(optarg, "env") == 0) { |
0254b211 KS |
314 | query = QUERY_PROPERTY; |
315 | } else if (strcmp(optarg, "name") == 0) { | |
b8476286 | 316 | query = QUERY_NAME; |
0254b211 | 317 | } else if (strcmp(optarg, "symlink") == 0) { |
b8476286 | 318 | query = QUERY_SYMLINK; |
0254b211 | 319 | } else if (strcmp(optarg, "path") == 0) { |
b8476286 | 320 | query = QUERY_PATH; |
0254b211 | 321 | } else if (strcmp(optarg, "all") == 0) { |
b8476286 | 322 | query = QUERY_ALL; |
0254b211 KS |
323 | } else { |
324 | fprintf(stderr, "unknown query type\n"); | |
325 | rc = 3; | |
326 | goto exit; | |
8ea84a8a | 327 | } |
0254b211 | 328 | break; |
87171e46 | 329 | case 'r': |
24ca5c33 KS |
330 | if (action == ACTION_NONE) |
331 | action = ACTION_ROOT; | |
88163971 | 332 | root = true; |
87171e46 | 333 | break; |
f338bac8 KS |
334 | case 'd': |
335 | action = ACTION_DEVICE_ID_FILE; | |
065db052 | 336 | util_strscpy(name, sizeof(name), optarg); |
f338bac8 | 337 | break; |
87171e46 | 338 | case 'a': |
24ca5c33 | 339 | action = ACTION_ATTRIBUTE_WALK; |
87171e46 | 340 | break; |
24ca5c33 | 341 | case 'e': |
bf7ad0ea | 342 | export_devices(udev); |
e48fc108 | 343 | goto exit; |
d1acfc3e | 344 | case 'x': |
88163971 | 345 | export = true; |
d1acfc3e KS |
346 | break; |
347 | case 'P': | |
348 | export_prefix = optarg; | |
349 | break; | |
87171e46 | 350 | case 'V': |
50025605 | 351 | printf("%s\n", VERSION); |
e48fc108 | 352 | goto exit; |
87171e46 | 353 | case 'h': |
225cb03b | 354 | printf("Usage: udevadm info OPTIONS\n" |
cd42b50d | 355 | " --query=<type> query device information:\n" |
f338bac8 KS |
356 | " name name of device node\n" |
357 | " symlink pointing to node\n" | |
cd42b50d | 358 | " path sys device path\n" |
0254b211 | 359 | " property the device properties\n" |
f338bac8 | 360 | " all all values\n" |
cd42b50d KS |
361 | " --path=<syspath> sys device path used for query or attribute walk\n" |
362 | " --name=<name> node or symlink name used for query or attribute walk\n" | |
363 | " --root prepend dev directory to path names\n" | |
364 | " --attribute-walk print all key matches while walking along the chain\n" | |
f338bac8 | 365 | " of parent devices\n" |
cd42b50d | 366 | " --device-id-of-file=<file> print major:minor of device containing this file\n" |
4281da1f KS |
367 | " --export export key/value pairs\n" |
368 | " --export-prefix export the key name with a prefix\n" | |
f338bac8 | 369 | " --export-db export the content of the udev database\n" |
f1e7e360 | 370 | " --help\n\n"); |
e3396a2d | 371 | goto exit; |
87171e46 | 372 | default: |
24ca5c33 | 373 | goto exit; |
87171e46 KS |
374 | } |
375 | } | |
376 | ||
24ca5c33 KS |
377 | switch (action) { |
378 | case ACTION_QUERY: | |
93b0f384 | 379 | if (device == NULL) { |
9a8047fa | 380 | fprintf(stderr, "query needs a valid device specified by --path= or --name=\n"); |
1aa1e248 | 381 | rc = 4; |
24ca5c33 | 382 | goto exit; |
87171e46 KS |
383 | } |
384 | ||
87171e46 | 385 | switch(query) { |
299650f1 KS |
386 | case QUERY_NAME: { |
387 | const char *node = udev_device_get_devnode(device); | |
388 | ||
389 | if (node == NULL) { | |
390 | fprintf(stderr, "no device node found\n"); | |
391 | rc = 5; | |
392 | goto exit; | |
393 | } | |
394 | ||
93b0f384 | 395 | if (root) { |
fb762bb9 | 396 | printf("%s\n", udev_device_get_devnode(device)); |
93b0f384 | 397 | } else { |
299650f1 KS |
398 | size_t len = strlen(udev_get_dev_path(udev)); |
399 | ||
400 | printf("%s\n", &udev_device_get_devnode(device)[len+1]); | |
18770246 | 401 | } |
24ca5c33 | 402 | break; |
299650f1 | 403 | } |
93b0f384 | 404 | case QUERY_SYMLINK: |
0de33a61 KS |
405 | list_entry = udev_device_get_devlinks_list_entry(device); |
406 | while (list_entry != NULL) { | |
bf7ad0ea | 407 | if (root) { |
0de33a61 | 408 | printf("%s", udev_list_entry_get_name(list_entry)); |
bf7ad0ea KS |
409 | } else { |
410 | size_t len; | |
411 | ||
412 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); | |
0de33a61 | 413 | printf("%s", &udev_list_entry_get_name(list_entry)[len+1]); |
bf7ad0ea | 414 | } |
0de33a61 KS |
415 | list_entry = udev_list_entry_get_next(list_entry); |
416 | if (list_entry != NULL) | |
bf7ad0ea KS |
417 | printf(" "); |
418 | } | |
419 | printf("\n"); | |
93b0f384 | 420 | break; |
b8476286 | 421 | case QUERY_PATH: |
93b0f384 | 422 | printf("%s\n", udev_device_get_devpath(device)); |
e48fc108 | 423 | goto exit; |
0254b211 | 424 | case QUERY_PROPERTY: |
0de33a61 KS |
425 | list_entry = udev_device_get_properties_list_entry(device); |
426 | while (list_entry != NULL) { | |
88163971 KS |
427 | if (export) { |
428 | const char *prefix = export_prefix; | |
429 | ||
430 | if (prefix == NULL) | |
431 | prefix = ""; | |
432 | printf("%s%s='%s'\n", prefix, | |
433 | udev_list_entry_get_name(list_entry), | |
434 | udev_list_entry_get_value(list_entry)); | |
435 | } else { | |
436 | printf("%s=%s\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry)); | |
437 | } | |
0de33a61 | 438 | list_entry = udev_list_entry_get_next(list_entry); |
bf7ad0ea | 439 | } |
24ca5c33 | 440 | break; |
b8476286 | 441 | case QUERY_ALL: |
93b0f384 | 442 | print_record(device); |
24ca5c33 | 443 | break; |
87171e46 | 444 | default: |
e3396a2d | 445 | fprintf(stderr, "unknown query type\n"); |
24ca5c33 | 446 | break; |
87171e46 | 447 | } |
24ca5c33 KS |
448 | break; |
449 | case ACTION_ATTRIBUTE_WALK: | |
93b0f384 | 450 | if (device == NULL) { |
9a8047fa | 451 | fprintf(stderr, "query needs a valid device specified by --path= or --name=\n"); |
62b9dfb6 | 452 | rc = 4; |
1aa0c52b KS |
453 | goto exit; |
454 | } | |
93b0f384 | 455 | print_device_chain(device); |
24ca5c33 | 456 | break; |
f338bac8 | 457 | case ACTION_DEVICE_ID_FILE: |
d1acfc3e | 458 | if (stat_device(name, export, export_prefix) != 0) |
62b9dfb6 | 459 | rc = 1; |
f338bac8 | 460 | break; |
24ca5c33 | 461 | case ACTION_ROOT: |
7d563a17 | 462 | printf("%s\n", udev_get_dev_path(udev)); |
24ca5c33 KS |
463 | break; |
464 | default: | |
e3396a2d | 465 | fprintf(stderr, "missing option\n"); |
1aa1e248 | 466 | rc = 1; |
24ca5c33 | 467 | break; |
87171e46 KS |
468 | } |
469 | ||
e48fc108 | 470 | exit: |
93b0f384 | 471 | udev_device_unref(device); |
1aa1e248 | 472 | return rc; |
87171e46 | 473 | } |