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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 | |
93b0f384 | 34 | static void print_all_attributes(struct udev_device *device, const char *key) |
be9b51f6 | 35 | { |
4aa0b15e | 36 | struct udev *udev = udev_device_get_udev(device); |
1aa1e248 KS |
37 | DIR *dir; |
38 | struct dirent *dent; | |
39 | ||
93b0f384 | 40 | dir = opendir(udev_device_get_syspath(device)); |
1aa1e248 KS |
41 | if (dir != NULL) { |
42 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
492e76c9 | 43 | struct stat statbuf; |
93b0f384 | 44 | const char *value; |
1aa1e248 KS |
45 | size_t len; |
46 | ||
492e76c9 KS |
47 | if (dent->d_name[0] == '.') |
48 | continue; | |
49 | ||
e9b64770 KS |
50 | if (strcmp(dent->d_name, "uevent") == 0) |
51 | continue; | |
4c46d72a KS |
52 | if (strcmp(dent->d_name, "dev") == 0) |
53 | continue; | |
e9b64770 | 54 | |
e6c1a2bd | 55 | if (fstatat(dirfd(dir), dent->d_name, &statbuf, AT_SYMLINK_NOFOLLOW) != 0) |
492e76c9 KS |
56 | continue; |
57 | if (S_ISLNK(statbuf.st_mode)) | |
58 | continue; | |
59 | ||
69239210 | 60 | value = udev_device_get_sysattr_value(device, dent->d_name); |
93b0f384 | 61 | if (value == NULL) |
1aa1e248 | 62 | continue; |
78715f65 | 63 | dbg(udev, "attr '%s'='%s'\n", dent->d_name, value); |
1aa1e248 | 64 | |
1aa1e248 | 65 | /* skip nonprintable attributes */ |
93b0f384 KS |
66 | len = strlen(value); |
67 | while (len > 0 && isprint(value[len-1])) | |
1aa1e248 | 68 | len--; |
93b0f384 | 69 | if (len > 0) { |
4aa0b15e | 70 | dbg(udev, "attribute value of '%s' non-printable, skip\n", dent->d_name); |
1aa1e248 KS |
71 | continue; |
72 | } | |
6276fdd2 | 73 | |
95776dc6 | 74 | printf(" %s{%s}==\"%s\"\n", key, dent->d_name, value); |
6276fdd2 | 75 | } |
4ad3a37f | 76 | closedir(dir); |
be9b51f6 KS |
77 | } |
78 | printf("\n"); | |
be9b51f6 KS |
79 | } |
80 | ||
93b0f384 | 81 | static int print_device_chain(struct udev_device *device) |
87171e46 | 82 | { |
b2d9e4f2 | 83 | struct udev_device *device_parent; |
4ad3a37f | 84 | const char *str; |
e48fc108 | 85 | |
1aa1e248 | 86 | printf("\n" |
b620292b | 87 | "Udevadm info starts with the device specified by the devpath and then\n" |
6cf19e52 KS |
88 | "walks up the chain of parent devices. It prints for every device\n" |
89 | "found, all possible attributes in the udev rules key format.\n" | |
90 | "A rule to match, can be composed by the attributes of the device\n" | |
91 | "and the attributes from one single parent device.\n" | |
dba8c18b | 92 | "\n"); |
f61d732a | 93 | |
4ad3a37f KS |
94 | printf(" looking at device '%s':\n", udev_device_get_devpath(device)); |
95 | printf(" KERNEL==\"%s\"\n", udev_device_get_sysname(device)); | |
96 | str = udev_device_get_subsystem(device); | |
97 | if (str == NULL) | |
98 | str = ""; | |
99 | printf(" SUBSYSTEM==\"%s\"\n", str); | |
100 | str = udev_device_get_driver(device); | |
101 | if (str == NULL) | |
102 | str = ""; | |
103 | printf(" DRIVER==\"%s\"\n", str); | |
93b0f384 | 104 | print_all_attributes(device, "ATTR"); |
4ad3a37f | 105 | |
b2d9e4f2 KS |
106 | device_parent = device; |
107 | do { | |
108 | device_parent = udev_device_get_parent(device_parent); | |
4ad3a37f | 109 | if (device_parent == NULL) |
034f35d7 | 110 | break; |
b2d9e4f2 KS |
111 | printf(" looking at parent device '%s':\n", udev_device_get_devpath(device_parent)); |
112 | printf(" KERNELS==\"%s\"\n", udev_device_get_sysname(device_parent)); | |
113 | str = udev_device_get_subsystem(device_parent); | |
4ad3a37f KS |
114 | if (str == NULL) |
115 | str = ""; | |
116 | printf(" SUBSYSTEMS==\"%s\"\n", str); | |
b2d9e4f2 | 117 | str = udev_device_get_driver(device_parent); |
4ad3a37f KS |
118 | if (str == NULL) |
119 | str = ""; | |
120 | printf(" DRIVERS==\"%s\"\n", str); | |
93b0f384 | 121 | print_all_attributes(device_parent, "ATTRS"); |
b2d9e4f2 | 122 | } while (device_parent != NULL); |
be9b51f6 | 123 | |
1aa1e248 KS |
124 | return 0; |
125 | } | |
126 | ||
93b0f384 | 127 | static void print_record(struct udev_device *device) |
31de3a2b | 128 | { |
93b0f384 | 129 | size_t len; |
ee137da3 | 130 | const char *str; |
93b0f384 | 131 | int i; |
0de33a61 | 132 | struct udev_list_entry *list_entry; |
93b0f384 KS |
133 | |
134 | printf("P: %s\n", udev_device_get_devpath(device)); | |
bf7ad0ea | 135 | |
93b0f384 | 136 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); |
ee137da3 KS |
137 | str = udev_device_get_devnode(device); |
138 | if (str != NULL) | |
139 | printf("N: %s\n", &str[len+1]); | |
bf7ad0ea | 140 | |
aa8734ff | 141 | i = udev_device_get_devlink_priority(device); |
93b0f384 KS |
142 | if (i != 0) |
143 | printf("L: %i\n", i); | |
bf7ad0ea | 144 | |
0de33a61 | 145 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) { |
bf7ad0ea | 146 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); |
0de33a61 | 147 | printf("S: %s\n", &udev_list_entry_get_name(list_entry)[len+1]); |
31de3a2b | 148 | } |
93b0f384 | 149 | |
0de33a61 KS |
150 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) |
151 | printf("E: %s=%s\n", | |
152 | udev_list_entry_get_name(list_entry), | |
153 | udev_list_entry_get_value(list_entry)); | |
bf7ad0ea | 154 | printf("\n"); |
31de3a2b KS |
155 | } |
156 | ||
d1acfc3e | 157 | static int stat_device(const char *name, int export, const char *prefix) |
f338bac8 KS |
158 | { |
159 | struct stat statbuf; | |
160 | ||
161 | if (stat(name, &statbuf) != 0) | |
162 | return -1; | |
163 | ||
d1acfc3e KS |
164 | if (export) { |
165 | if (prefix == NULL) | |
166 | prefix = "INFO_"; | |
167 | printf("%sMAJOR=%d\n" | |
168 | "%sMINOR=%d\n", | |
169 | prefix, major(statbuf.st_dev), | |
170 | prefix, minor(statbuf.st_dev)); | |
171 | } else | |
cce9d773 | 172 | printf("%d:%d\n", major(statbuf.st_dev), minor(statbuf.st_dev)); |
f338bac8 KS |
173 | return 0; |
174 | } | |
175 | ||
bf7ad0ea KS |
176 | static int export_devices(struct udev *udev) |
177 | { | |
438d4c3c | 178 | struct udev_enumerate *udev_enumerate; |
0de33a61 | 179 | struct udev_list_entry *list_entry; |
bf7ad0ea | 180 | |
438d4c3c KS |
181 | udev_enumerate = udev_enumerate_new(udev); |
182 | if (udev_enumerate == NULL) | |
bf7ad0ea | 183 | return -1; |
c97f839e | 184 | udev_enumerate_scan_devices(udev_enumerate); |
438d4c3c | 185 | udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate)) { |
bf7ad0ea KS |
186 | struct udev_device *device; |
187 | ||
0de33a61 | 188 | device = udev_device_new_from_syspath(udev, udev_list_entry_get_name(list_entry)); |
bf7ad0ea | 189 | if (device != NULL) { |
b38a5801 | 190 | print_record(device); |
bf7ad0ea KS |
191 | udev_device_unref(device); |
192 | } | |
bf7ad0ea | 193 | } |
438d4c3c | 194 | udev_enumerate_unref(udev_enumerate); |
bf7ad0ea KS |
195 | return 0; |
196 | } | |
197 | ||
7d563a17 | 198 | int udevadm_info(struct udev *udev, int argc, char *argv[]) |
87171e46 | 199 | { |
93b0f384 | 200 | struct udev_device *device = NULL; |
87171e46 | 201 | int root = 0; |
d1acfc3e KS |
202 | int export = 0; |
203 | const char *export_prefix = NULL; | |
93b0f384 KS |
204 | char path[UTIL_PATH_SIZE]; |
205 | char name[UTIL_PATH_SIZE]; | |
0de33a61 | 206 | struct udev_list_entry *list_entry; |
93b0f384 | 207 | int rc = 0; |
24ca5c33 | 208 | |
e97717ba | 209 | static const struct option options[] = { |
033e9f8c KS |
210 | { "name", required_argument, NULL, 'n' }, |
211 | { "path", required_argument, NULL, 'p' }, | |
ff5d99e0 | 212 | { "query", required_argument, NULL, 'q' }, |
033e9f8c KS |
213 | { "attribute-walk", no_argument, NULL, 'a' }, |
214 | { "export-db", no_argument, NULL, 'e' }, | |
215 | { "root", no_argument, NULL, 'r' }, | |
216 | { "device-id-of-file", required_argument, NULL, 'd' }, | |
217 | { "export", no_argument, NULL, 'x' }, | |
218 | { "export-prefix", required_argument, NULL, 'P' }, | |
50025605 | 219 | { "version", no_argument, NULL, 'V' }, |
033e9f8c | 220 | { "help", no_argument, NULL, 'h' }, |
11f1bb5a KS |
221 | {} |
222 | }; | |
223 | ||
24ca5c33 KS |
224 | enum action_type { |
225 | ACTION_NONE, | |
226 | ACTION_QUERY, | |
227 | ACTION_ATTRIBUTE_WALK, | |
228 | ACTION_ROOT, | |
f338bac8 | 229 | ACTION_DEVICE_ID_FILE, |
24ca5c33 KS |
230 | } action = ACTION_NONE; |
231 | ||
b8476286 KS |
232 | enum query_type { |
233 | QUERY_NONE, | |
234 | QUERY_NAME, | |
235 | QUERY_PATH, | |
236 | QUERY_SYMLINK, | |
0254b211 | 237 | QUERY_PROPERTY, |
b8476286 KS |
238 | QUERY_ALL, |
239 | } query = QUERY_NONE; | |
24ca5c33 | 240 | |
87171e46 | 241 | while (1) { |
7d563a17 | 242 | int option; |
bf7ad0ea | 243 | struct stat statbuf; |
7d563a17 | 244 | |
ff5d99e0 | 245 | option = getopt_long(argc, argv, "aed:n:p:q:rxPVh", options, NULL); |
87171e46 KS |
246 | if (option == -1) |
247 | break; | |
248 | ||
7d563a17 | 249 | dbg(udev, "option '%c'\n", option); |
87171e46 KS |
250 | switch (option) { |
251 | case 'n': | |
93b0f384 KS |
252 | if (device != NULL) { |
253 | fprintf(stderr, "device already specified\n"); | |
254 | rc = 2; | |
255 | goto exit; | |
256 | } | |
2362eea6 | 257 | /* remove /dev if given */ |
065db052 KS |
258 | if (strncmp(optarg, udev_get_dev_path(udev), strlen(udev_get_dev_path(udev))) != 0) |
259 | util_strscpyl(name, sizeof(name), udev_get_dev_path(udev), "/", optarg, NULL); | |
260 | else | |
261 | util_strscpy(name, sizeof(name), optarg); | |
ecc9ec57 | 262 | util_remove_trailing_chars(name, '/'); |
bf7ad0ea KS |
263 | if (stat(name, &statbuf) < 0) { |
264 | fprintf(stderr, "device node not found\n"); | |
265 | rc = 2; | |
266 | goto exit; | |
267 | } else { | |
268 | char type; | |
269 | ||
270 | if (S_ISBLK(statbuf.st_mode)) { | |
271 | type = 'b'; | |
272 | } else if (S_ISCHR(statbuf.st_mode)) { | |
273 | type = 'c'; | |
274 | } else { | |
275 | fprintf(stderr, "device node has wrong file type\n"); | |
276 | rc = 2; | |
277 | goto exit; | |
278 | } | |
279 | device = udev_device_new_from_devnum(udev, type, statbuf.st_rdev); | |
280 | if (device == NULL) { | |
281 | fprintf(stderr, "device node not found\n"); | |
282 | rc = 2; | |
283 | goto exit; | |
284 | } | |
285 | } | |
87171e46 | 286 | break; |
87171e46 | 287 | case 'p': |
93b0f384 KS |
288 | if (device != NULL) { |
289 | fprintf(stderr, "device already specified\n"); | |
290 | rc = 2; | |
291 | goto exit; | |
292 | } | |
bc8184ed | 293 | /* add sys dir if needed */ |
065db052 KS |
294 | if (strncmp(optarg, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0) |
295 | util_strscpyl(path, sizeof(path), udev_get_sys_path(udev), optarg, NULL); | |
296 | else | |
297 | util_strscpy(path, sizeof(path), optarg); | |
ecc9ec57 | 298 | util_remove_trailing_chars(path, '/'); |
8753fadf | 299 | device = udev_device_new_from_syspath(udev, path); |
bf7ad0ea KS |
300 | if (device == NULL) { |
301 | fprintf(stderr, "device path not found\n"); | |
302 | rc = 2; | |
303 | goto exit; | |
304 | } | |
87171e46 | 305 | break; |
87171e46 | 306 | case 'q': |
24ca5c33 | 307 | action = ACTION_QUERY; |
ff5d99e0 | 308 | if (strcmp(optarg, "property") == 0 || strcmp(optarg, "env") == 0) { |
0254b211 KS |
309 | query = QUERY_PROPERTY; |
310 | } else if (strcmp(optarg, "name") == 0) { | |
b8476286 | 311 | query = QUERY_NAME; |
0254b211 | 312 | } else if (strcmp(optarg, "symlink") == 0) { |
b8476286 | 313 | query = QUERY_SYMLINK; |
0254b211 | 314 | } else if (strcmp(optarg, "path") == 0) { |
b8476286 | 315 | query = QUERY_PATH; |
0254b211 | 316 | } else if (strcmp(optarg, "all") == 0) { |
b8476286 | 317 | query = QUERY_ALL; |
0254b211 KS |
318 | } else { |
319 | fprintf(stderr, "unknown query type\n"); | |
320 | rc = 3; | |
321 | goto exit; | |
8ea84a8a | 322 | } |
0254b211 | 323 | break; |
87171e46 | 324 | case 'r': |
24ca5c33 KS |
325 | if (action == ACTION_NONE) |
326 | action = ACTION_ROOT; | |
87171e46 KS |
327 | root = 1; |
328 | break; | |
f338bac8 KS |
329 | case 'd': |
330 | action = ACTION_DEVICE_ID_FILE; | |
065db052 | 331 | util_strscpy(name, sizeof(name), optarg); |
f338bac8 | 332 | break; |
87171e46 | 333 | case 'a': |
24ca5c33 | 334 | action = ACTION_ATTRIBUTE_WALK; |
87171e46 | 335 | break; |
24ca5c33 | 336 | case 'e': |
bf7ad0ea | 337 | export_devices(udev); |
e48fc108 | 338 | goto exit; |
d1acfc3e KS |
339 | case 'x': |
340 | export = 1; | |
341 | break; | |
342 | case 'P': | |
343 | export_prefix = optarg; | |
344 | break; | |
87171e46 | 345 | case 'V': |
50025605 | 346 | printf("%s\n", VERSION); |
e48fc108 | 347 | goto exit; |
87171e46 | 348 | case 'h': |
225cb03b | 349 | printf("Usage: udevadm info OPTIONS\n" |
cd42b50d | 350 | " --query=<type> query device information:\n" |
f338bac8 KS |
351 | " name name of device node\n" |
352 | " symlink pointing to node\n" | |
cd42b50d | 353 | " path sys device path\n" |
0254b211 | 354 | " property the device properties\n" |
f338bac8 | 355 | " all all values\n" |
cd42b50d KS |
356 | " --path=<syspath> sys device path used for query or attribute walk\n" |
357 | " --name=<name> node or symlink name used for query or attribute walk\n" | |
358 | " --root prepend dev directory to path names\n" | |
359 | " --attribute-walk print all key matches while walking along the chain\n" | |
f338bac8 | 360 | " of parent devices\n" |
cd42b50d | 361 | " --device-id-of-file=<file> print major:minor of device containing this file\n" |
f338bac8 | 362 | " --export-db export the content of the udev database\n" |
f1e7e360 | 363 | " --help\n\n"); |
e3396a2d | 364 | goto exit; |
87171e46 | 365 | default: |
24ca5c33 | 366 | goto exit; |
87171e46 KS |
367 | } |
368 | } | |
369 | ||
24ca5c33 KS |
370 | switch (action) { |
371 | case ACTION_QUERY: | |
93b0f384 | 372 | if (device == NULL) { |
9a8047fa | 373 | fprintf(stderr, "query needs a valid device specified by --path= or --name=\n"); |
1aa1e248 | 374 | rc = 4; |
24ca5c33 | 375 | goto exit; |
87171e46 KS |
376 | } |
377 | ||
87171e46 | 378 | switch(query) { |
299650f1 KS |
379 | case QUERY_NAME: { |
380 | const char *node = udev_device_get_devnode(device); | |
381 | ||
382 | if (node == NULL) { | |
383 | fprintf(stderr, "no device node found\n"); | |
384 | rc = 5; | |
385 | goto exit; | |
386 | } | |
387 | ||
93b0f384 | 388 | if (root) { |
fb762bb9 | 389 | printf("%s\n", udev_device_get_devnode(device)); |
93b0f384 | 390 | } else { |
299650f1 KS |
391 | size_t len = strlen(udev_get_dev_path(udev)); |
392 | ||
393 | printf("%s\n", &udev_device_get_devnode(device)[len+1]); | |
18770246 | 394 | } |
24ca5c33 | 395 | break; |
299650f1 | 396 | } |
93b0f384 | 397 | case QUERY_SYMLINK: |
0de33a61 KS |
398 | list_entry = udev_device_get_devlinks_list_entry(device); |
399 | while (list_entry != NULL) { | |
bf7ad0ea | 400 | if (root) { |
0de33a61 | 401 | printf("%s", udev_list_entry_get_name(list_entry)); |
bf7ad0ea KS |
402 | } else { |
403 | size_t len; | |
404 | ||
405 | len = strlen(udev_get_dev_path(udev_device_get_udev(device))); | |
0de33a61 | 406 | printf("%s", &udev_list_entry_get_name(list_entry)[len+1]); |
bf7ad0ea | 407 | } |
0de33a61 KS |
408 | list_entry = udev_list_entry_get_next(list_entry); |
409 | if (list_entry != NULL) | |
bf7ad0ea KS |
410 | printf(" "); |
411 | } | |
412 | printf("\n"); | |
93b0f384 | 413 | break; |
b8476286 | 414 | case QUERY_PATH: |
93b0f384 | 415 | printf("%s\n", udev_device_get_devpath(device)); |
e48fc108 | 416 | goto exit; |
0254b211 | 417 | case QUERY_PROPERTY: |
0de33a61 KS |
418 | list_entry = udev_device_get_properties_list_entry(device); |
419 | while (list_entry != NULL) { | |
420 | printf("%s=%s\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry)); | |
421 | list_entry = udev_list_entry_get_next(list_entry); | |
bf7ad0ea | 422 | } |
24ca5c33 | 423 | break; |
b8476286 | 424 | case QUERY_ALL: |
93b0f384 | 425 | print_record(device); |
24ca5c33 | 426 | break; |
87171e46 | 427 | default: |
e3396a2d | 428 | fprintf(stderr, "unknown query type\n"); |
24ca5c33 | 429 | break; |
87171e46 | 430 | } |
24ca5c33 KS |
431 | break; |
432 | case ACTION_ATTRIBUTE_WALK: | |
93b0f384 | 433 | if (device == NULL) { |
9a8047fa | 434 | fprintf(stderr, "query needs a valid device specified by --path= or --name=\n"); |
62b9dfb6 | 435 | rc = 4; |
1aa0c52b KS |
436 | goto exit; |
437 | } | |
93b0f384 | 438 | print_device_chain(device); |
24ca5c33 | 439 | break; |
f338bac8 | 440 | case ACTION_DEVICE_ID_FILE: |
d1acfc3e | 441 | if (stat_device(name, export, export_prefix) != 0) |
62b9dfb6 | 442 | rc = 1; |
f338bac8 | 443 | break; |
24ca5c33 | 444 | case ACTION_ROOT: |
7d563a17 | 445 | printf("%s\n", udev_get_dev_path(udev)); |
24ca5c33 KS |
446 | break; |
447 | default: | |
e3396a2d | 448 | fprintf(stderr, "missing option\n"); |
1aa1e248 | 449 | rc = 1; |
24ca5c33 | 450 | break; |
87171e46 KS |
451 | } |
452 | ||
e48fc108 | 453 | exit: |
93b0f384 | 454 | udev_device_unref(device); |
1aa1e248 | 455 | return rc; |
87171e46 | 456 | } |