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Commit | Line | Data |
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2232cac8 | 1 | /* |
6880b25d | 2 | * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org> |
2232cac8 | 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. | |
3d6d12c6 | 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. | |
2232cac8 | 13 | * |
55e9959b KS |
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/>. | |
2232cac8 GKH |
16 | */ |
17 | ||
18 | #include <stddef.h> | |
19 | #include <stdlib.h> | |
20 | #include <string.h> | |
21 | #include <stdio.h> | |
22 | #include <fcntl.h> | |
23 | #include <ctype.h> | |
24 | #include <unistd.h> | |
25 | #include <errno.h> | |
5ee7ecfb | 26 | #include <dirent.h> |
cea61f5c | 27 | #include <fnmatch.h> |
2232cac8 | 28 | |
2232cac8 | 29 | #include "udev.h" |
2232cac8 | 30 | |
6880b25d KS |
31 | #define PREALLOC_TOKEN 2048 |
32 | #define PREALLOC_STRBUF 32 * 1024 | |
c7521974 KS |
33 | |
34 | enum key_operation { | |
35 | KEY_OP_UNSET, | |
36 | KEY_OP_MATCH, | |
37 | KEY_OP_NOMATCH, | |
38 | KEY_OP_ADD, | |
39 | KEY_OP_ASSIGN, | |
40 | KEY_OP_ASSIGN_FINAL, | |
41 | }; | |
42 | ||
6880b25d KS |
43 | static const char *operation_str[] = { |
44 | [KEY_OP_MATCH] = "match", | |
45 | [KEY_OP_NOMATCH] = "nomatch", | |
46 | [KEY_OP_ADD] = "add", | |
47 | [KEY_OP_ASSIGN] = "assign", | |
48 | [KEY_OP_ASSIGN_FINAL] = "assign-final", | |
c7521974 KS |
49 | }; |
50 | ||
6880b25d KS |
51 | enum token_type { |
52 | TK_UNDEF, | |
53 | TK_RULE, | |
54 | ||
6880b25d KS |
55 | TK_M_ACTION, /* val */ |
56 | TK_M_DEVPATH, /* val */ | |
57 | TK_M_KERNEL, /* val */ | |
58 | TK_M_DEVLINK, /* val */ | |
59 | TK_M_NAME, /* val */ | |
60 | TK_M_ENV, /* val, attr */ | |
61 | TK_M_SUBSYSTEM, /* val */ | |
62 | TK_M_DRIVER, /* val */ | |
7aeeaedc | 63 | TK_M_WAITFOR, /* val */ |
6880b25d KS |
64 | TK_M_ATTR, /* val, attr */ |
65 | ||
66 | TK_M_KERNELS, /* val */ | |
67 | TK_M_SUBSYSTEMS, /* val */ | |
68 | TK_M_DRIVERS, /* val */ | |
69 | TK_M_ATTRS, /* val, attr */ | |
70 | TK_PARENTS_MAX, | |
71 | ||
72 | TK_M_TEST, /* val, mode_t */ | |
73 | TK_M_PROGRAM, /* val */ | |
74 | TK_M_IMPORT_FILE, /* val */ | |
75 | TK_M_IMPORT_PROG, /* val */ | |
76 | TK_M_IMPORT_PARENT, /* val */ | |
77 | TK_M_RESULT, /* val */ | |
78 | ||
79 | TK_A_IGNORE_DEVICE, | |
80 | TK_A_STRING_ESCAPE_NONE, | |
81 | TK_A_STRING_ESCAPE_REPLACE, | |
82 | TK_A_NUM_FAKE_PART, /* int */ | |
83 | TK_A_DEVLINK_PRIO, /* int */ | |
84 | TK_A_OWNER, /* val */ | |
85 | TK_A_GROUP, /* val */ | |
86 | TK_A_MODE, /* val */ | |
87 | TK_A_OWNER_ID, /* uid_t */ | |
88 | TK_A_GROUP_ID, /* gid_t */ | |
89 | TK_A_MODE_ID, /* mode_t */ | |
90 | TK_A_ENV, /* val, attr */ | |
91 | TK_A_NAME, /* val */ | |
92 | TK_A_DEVLINK, /* val */ | |
93 | TK_A_EVENT_TIMEOUT, /* int */ | |
94 | TK_A_IGNORE_REMOVE, | |
95 | TK_A_ATTR, /* val, attr */ | |
96 | TK_A_RUN, /* val, bool */ | |
97 | TK_A_GOTO, /* size_t */ | |
98 | TK_A_LAST_RULE, | |
99 | ||
100 | TK_END, | |
c7521974 KS |
101 | }; |
102 | ||
6880b25d KS |
103 | static const char *token_str[] = { |
104 | [TK_UNDEF] = "UNDEF", | |
105 | [TK_RULE] = "RULE", | |
106 | ||
6880b25d KS |
107 | [TK_M_ACTION] = "M ACTION", |
108 | [TK_M_DEVPATH] = "M DEVPATH", | |
109 | [TK_M_KERNEL] = "M KERNEL", | |
110 | [TK_M_DEVLINK] = "M DEVLINK", | |
111 | [TK_M_NAME] = "M NAME", | |
112 | [TK_M_ENV] = "M ENV", | |
113 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
114 | [TK_M_DRIVER] = "M DRIVER", | |
7aeeaedc | 115 | [TK_M_WAITFOR] = "M WAITFOR", |
6880b25d KS |
116 | [TK_M_ATTR] = "M ATTR", |
117 | ||
118 | [TK_M_KERNELS] = "M KERNELS", | |
119 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", | |
120 | [TK_M_DRIVERS] = "M DRIVERS", | |
121 | [TK_M_ATTRS] = "M ATTRS", | |
122 | [TK_PARENTS_MAX] = "PARENTS_MAX", | |
123 | ||
124 | [TK_M_TEST] = "M TEST", | |
125 | [TK_M_PROGRAM] = "M PROGRAM", | |
126 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", | |
127 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
128 | [TK_M_IMPORT_PARENT] = "M MPORT_PARENT", | |
129 | [TK_M_RESULT] = "M RESULT", | |
130 | ||
131 | [TK_A_IGNORE_DEVICE] = "A IGNORE_DEVICE", | |
132 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
133 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
134 | [TK_A_NUM_FAKE_PART] = "A NUM_FAKE_PART", | |
135 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
136 | [TK_A_OWNER] = "A OWNER", | |
137 | [TK_A_GROUP] = "A GROUP", | |
138 | [TK_A_MODE] = "A MODE", | |
139 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
140 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
141 | [TK_A_MODE_ID] = "A MODE_ID", | |
142 | [TK_A_ENV] = "A ENV", | |
143 | [TK_A_NAME] = "A NAME", | |
144 | [TK_A_DEVLINK] = "A DEVLINK", | |
145 | [TK_A_EVENT_TIMEOUT] = "A EVENT_TIMEOUT", | |
146 | [TK_A_IGNORE_REMOVE] = "A IGNORE_REMOVE", | |
147 | [TK_A_ATTR] = "A ATTR", | |
148 | [TK_A_RUN] = "A RUN", | |
149 | [TK_A_GOTO] = "A GOTO", | |
150 | [TK_A_LAST_RULE] = "A LAST_RULE", | |
151 | ||
152 | [TK_END] = "END", | |
c7521974 KS |
153 | }; |
154 | ||
6880b25d KS |
155 | struct token { |
156 | enum token_type type; | |
157 | union { | |
158 | struct { | |
159 | unsigned int next_rule; | |
160 | unsigned int label_off; | |
161 | unsigned int filename_off; | |
162 | } rule; | |
163 | struct { | |
164 | enum key_operation op; | |
165 | unsigned int value_off; | |
166 | union { | |
167 | unsigned int attr_off; | |
168 | int ignore_error; | |
169 | int i; | |
170 | unsigned int rule_goto; | |
171 | mode_t mode; | |
172 | uid_t uid; | |
173 | gid_t gid; | |
174 | int num_fake_part; | |
175 | int devlink_prio; | |
176 | int event_timeout; | |
177 | }; | |
178 | } key; | |
179 | }; | |
c7521974 KS |
180 | }; |
181 | ||
6880b25d KS |
182 | #define MAX_TK 64 |
183 | struct rule_tmp { | |
184 | struct udev_rules *rules; | |
185 | struct token rule; | |
186 | struct token token[MAX_TK]; | |
187 | unsigned int token_cur; | |
c7521974 KS |
188 | }; |
189 | ||
6880b25d KS |
190 | struct udev_rules { |
191 | struct udev *udev; | |
192 | int resolve_names; | |
193 | struct token *tokens; | |
194 | unsigned int token_cur; | |
195 | unsigned int token_max; | |
196 | char *buf; | |
197 | size_t buf_cur; | |
198 | size_t buf_max; | |
199 | unsigned int buf_count; | |
c7521974 KS |
200 | }; |
201 | ||
6880b25d KS |
202 | /* we could lookup and return existing strings, or tails of strings */ |
203 | static int add_string(struct udev_rules *rules, const char *str) | |
c7521974 | 204 | { |
6880b25d KS |
205 | size_t len = strlen(str)+1; |
206 | int off; | |
c7521974 | 207 | |
6880b25d KS |
208 | if (rules->buf_cur + len+1 >= rules->buf_max) { |
209 | char *buf; | |
210 | unsigned int add; | |
c7521974 | 211 | |
6880b25d KS |
212 | /* double the buffer size */ |
213 | add = rules->buf_max; | |
214 | if (add < len) | |
215 | add = len; | |
c7521974 | 216 | |
6880b25d KS |
217 | buf = realloc(rules->buf, rules->buf_max + add); |
218 | if (buf == NULL) | |
219 | return -1; | |
220 | info(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add); | |
221 | rules->buf = buf; | |
222 | rules->buf_max += add; | |
c7521974 | 223 | } |
6880b25d KS |
224 | off = rules->buf_cur; |
225 | memcpy(&rules->buf[rules->buf_cur], str, len); | |
226 | rules->buf_cur += len; | |
227 | rules->buf_count++; | |
228 | return off; | |
c7521974 KS |
229 | } |
230 | ||
6880b25d | 231 | static int add_token(struct udev_rules *rules, struct token *token) |
c7521974 | 232 | { |
c7521974 | 233 | |
6880b25d KS |
234 | if (rules->token_cur+1 >= rules->token_max) { |
235 | struct token *tokens; | |
236 | unsigned int add; | |
c7521974 | 237 | |
6880b25d KS |
238 | /* double the buffer size */ |
239 | add = rules->token_max; | |
240 | if (add < 1) | |
241 | add = 1; | |
c7521974 | 242 | |
6880b25d KS |
243 | tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token)); |
244 | if (tokens == NULL) | |
245 | return -1; | |
246 | info(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add); | |
247 | rules->tokens = tokens; | |
248 | rules->token_max += add; | |
c7521974 | 249 | } |
6880b25d KS |
250 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); |
251 | rules->token_cur++; | |
252 | return 0; | |
c7521974 | 253 | } |
a27cd06c | 254 | |
bb144ed1 | 255 | static int import_property_from_string(struct udev_device *dev, char *line) |
bd0ed2ff | 256 | { |
bb144ed1 KS |
257 | struct udev *udev = udev_device_get_udev(dev); |
258 | char *key; | |
259 | char *val; | |
260 | size_t len; | |
bd0ed2ff | 261 | |
bb144ed1 KS |
262 | /* find key */ |
263 | key = line; | |
264 | while (isspace(key[0])) | |
265 | key++; | |
bd0ed2ff | 266 | |
bb144ed1 KS |
267 | /* comment or empty line */ |
268 | if (key[0] == '#' || key[0] == '\0') | |
269 | return -1; | |
16511863 | 270 | |
bb144ed1 KS |
271 | /* split key/value */ |
272 | val = strchr(key, '='); | |
273 | if (val == NULL) | |
274 | return -1; | |
275 | val[0] = '\0'; | |
276 | val++; | |
aa8734ff | 277 | |
bb144ed1 KS |
278 | /* find value */ |
279 | while (isspace(val[0])) | |
280 | val++; | |
281 | ||
282 | /* terminate key */ | |
283 | len = strlen(key); | |
284 | if (len == 0) | |
285 | return -1; | |
286 | while (isspace(key[len-1])) | |
287 | len--; | |
288 | key[len] = '\0'; | |
289 | ||
290 | /* terminate value */ | |
291 | len = strlen(val); | |
292 | if (len == 0) | |
293 | return -1; | |
294 | while (isspace(val[len-1])) | |
295 | len--; | |
296 | val[len] = '\0'; | |
297 | ||
298 | if (len == 0) | |
299 | return -1; | |
300 | ||
301 | /* unquote */ | |
302 | if (val[0] == '"' || val[0] == '\'') { | |
303 | if (val[len-1] != val[0]) { | |
304 | info(udev, "inconsistent quoting: '%s', skip\n", line); | |
305 | return -1; | |
bd0ed2ff | 306 | } |
bb144ed1 KS |
307 | val[len-1] = '\0'; |
308 | val++; | |
309 | } | |
310 | ||
311 | info(udev, "adding '%s'='%s'\n", key, val); | |
312 | ||
313 | /* handle device, renamed by external tool, returning new path */ | |
314 | if (strcmp(key, "DEVPATH") == 0) { | |
315 | char syspath[UTIL_PATH_SIZE]; | |
316 | ||
317 | info(udev, "updating devpath from '%s' to '%s'\n", | |
318 | udev_device_get_devpath(dev), val); | |
319 | util_strlcpy(syspath, udev_get_sys_path(udev), sizeof(syspath)); | |
320 | util_strlcat(syspath, val, sizeof(syspath)); | |
321 | udev_device_set_syspath(dev, syspath); | |
322 | } else { | |
323 | struct udev_list_entry *entry; | |
324 | ||
325 | entry = udev_device_add_property(dev, key, val); | |
326 | /* store in db */ | |
327 | udev_list_entry_set_flag(entry, 1); | |
bd0ed2ff | 328 | } |
be4bedd1 KS |
329 | return 0; |
330 | } | |
331 | ||
6880b25d | 332 | static int import_file_into_properties(struct udev_device *dev, const char *filename) |
be4bedd1 | 333 | { |
bb144ed1 KS |
334 | FILE *f; |
335 | char line[UTIL_LINE_SIZE]; | |
be4bedd1 | 336 | |
bb144ed1 KS |
337 | f = fopen(filename, "r"); |
338 | if (f == NULL) | |
be4bedd1 | 339 | return -1; |
fc42bd5d | 340 | while (fgets(line, sizeof(line), f) != NULL) |
bb144ed1 KS |
341 | import_property_from_string(dev, line); |
342 | fclose(f); | |
be4bedd1 | 343 | return 0; |
bd0ed2ff KS |
344 | } |
345 | ||
6880b25d | 346 | static int import_program_into_properties(struct udev_device *dev, const char *program) |
319c6700 | 347 | { |
d0db192f KS |
348 | struct udev *udev = udev_device_get_udev(dev); |
349 | char **envp; | |
05610c08 | 350 | char result[2048]; |
319c6700 | 351 | size_t reslen; |
bb144ed1 | 352 | char *line; |
319c6700 | 353 | |
d0db192f | 354 | envp = udev_device_get_properties_envp(dev); |
54808d77 | 355 | if (util_run_program(udev, program, envp, result, sizeof(result), &reslen) != 0) |
319c6700 | 356 | return -1; |
bb144ed1 KS |
357 | |
358 | line = result; | |
359 | while (line != NULL) { | |
360 | char *pos; | |
361 | ||
362 | pos = strchr(line, '\n'); | |
363 | if (pos != NULL) { | |
364 | pos[0] = '\0'; | |
365 | pos = &pos[1]; | |
366 | } | |
367 | import_property_from_string(dev, line); | |
368 | line = pos; | |
369 | } | |
370 | return 0; | |
319c6700 KS |
371 | } |
372 | ||
6880b25d | 373 | static int import_parent_into_properties(struct udev_device *dev, const char *filter) |
0bfb84e1 | 374 | { |
bb144ed1 | 375 | struct udev *udev = udev_device_get_udev(dev); |
aa8734ff KS |
376 | struct udev_device *dev_parent; |
377 | struct udev_list_entry *list_entry; | |
0bfb84e1 | 378 | |
bb144ed1 | 379 | dev_parent = udev_device_get_parent(dev); |
aa8734ff KS |
380 | if (dev_parent == NULL) |
381 | return -1; | |
0bfb84e1 | 382 | |
bb144ed1 | 383 | dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent)); |
aa8734ff KS |
384 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) { |
385 | const char *key = udev_list_entry_get_name(list_entry); | |
386 | const char *val = udev_list_entry_get_value(list_entry); | |
0bfb84e1 | 387 | |
aa8734ff KS |
388 | if (fnmatch(filter, key, 0) == 0) { |
389 | struct udev_list_entry *entry; | |
e2ecb34f | 390 | |
bb144ed1 KS |
391 | dbg(udev, "import key '%s=%s'\n", key, val); |
392 | entry = udev_device_add_property(dev, key, val); | |
aa8734ff KS |
393 | /* store in db */ |
394 | udev_list_entry_set_flag(entry, 1); | |
395 | } | |
e2ecb34f | 396 | } |
aa8734ff | 397 | return 0; |
e2ecb34f KS |
398 | } |
399 | ||
c86be870 | 400 | #define WAIT_LOOP_PER_SECOND 50 |
6880b25d | 401 | static int wait_for_file(struct udev_device *dev, const char *file, int timeout) |
b2fe4b9a | 402 | { |
6880b25d | 403 | struct udev *udev = udev_device_get_udev(dev); |
17fcfb59 KS |
404 | char filepath[UTIL_PATH_SIZE]; |
405 | char devicepath[UTIL_PATH_SIZE] = ""; | |
b2fe4b9a KS |
406 | struct stat stats; |
407 | int loop = timeout * WAIT_LOOP_PER_SECOND; | |
408 | ||
ea97dc37 KS |
409 | /* a relative path is a device attribute */ |
410 | if (file[0] != '/') { | |
6880b25d KS |
411 | util_strlcpy(devicepath, udev_get_sys_path(udev), sizeof(devicepath)); |
412 | util_strlcat(devicepath, udev_device_get_devpath(dev), sizeof(devicepath)); | |
b2fe4b9a | 413 | |
31c1f537 KS |
414 | util_strlcpy(filepath, devicepath, sizeof(filepath)); |
415 | util_strlcat(filepath, "/", sizeof(filepath)); | |
416 | util_strlcat(filepath, file, sizeof(filepath)); | |
ea97dc37 KS |
417 | file = filepath; |
418 | } | |
419 | ||
6880b25d | 420 | dbg(udev, "will wait %i sec for '%s'\n", timeout, file); |
b2fe4b9a | 421 | while (--loop) { |
656ba91e | 422 | /* lookup file */ |
ea97dc37 | 423 | if (stat(file, &stats) == 0) { |
6880b25d | 424 | info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1); |
b2fe4b9a KS |
425 | return 0; |
426 | } | |
eb5b8640 | 427 | /* make sure, the device did not disappear in the meantime */ |
ea97dc37 | 428 | if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) { |
6880b25d | 429 | info(udev, "device disappeared while waiting for '%s'\n", file); |
656ba91e KS |
430 | return -2; |
431 | } | |
6880b25d | 432 | info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND); |
b2fe4b9a KS |
433 | usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND); |
434 | } | |
6880b25d | 435 | info(udev, "waiting for '%s' failed\n", file); |
b2fe4b9a KS |
436 | return -1; |
437 | } | |
438 | ||
0ea5e96e KS |
439 | static int attr_subst_subdir(char *attr, size_t len) |
440 | { | |
441 | char *pos; | |
442 | int found = 0; | |
443 | ||
444 | pos = strstr(attr, "/*/"); | |
445 | if (pos != NULL) { | |
17fcfb59 | 446 | char str[UTIL_PATH_SIZE]; |
0ea5e96e KS |
447 | DIR *dir; |
448 | ||
449 | pos[1] = '\0'; | |
31c1f537 | 450 | util_strlcpy(str, &pos[2], sizeof(str)); |
0ea5e96e KS |
451 | dir = opendir(attr); |
452 | if (dir != NULL) { | |
453 | struct dirent *dent; | |
454 | ||
455 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
456 | struct stat stats; | |
457 | ||
458 | if (dent->d_name[0] == '.') | |
459 | continue; | |
31c1f537 KS |
460 | util_strlcat(attr, dent->d_name, len); |
461 | util_strlcat(attr, str, len); | |
0ea5e96e KS |
462 | if (stat(attr, &stats) == 0) { |
463 | found = 1; | |
464 | break; | |
465 | } | |
466 | pos[1] = '\0'; | |
467 | } | |
468 | closedir(dir); | |
469 | } | |
470 | if (!found) | |
31c1f537 | 471 | util_strlcat(attr, str, len); |
0ea5e96e KS |
472 | } |
473 | ||
474 | return found; | |
475 | } | |
476 | ||
6880b25d | 477 | static int get_key(struct udev *udev, char **line, char **key, enum key_operation *op, char **value) |
a0e5382d | 478 | { |
6880b25d KS |
479 | char *linepos; |
480 | char *temp; | |
a0e5382d | 481 | |
6880b25d KS |
482 | linepos = *line; |
483 | if (linepos == NULL && linepos[0] == '\0') | |
484 | return -1; | |
a0e5382d | 485 | |
6880b25d KS |
486 | /* skip whitespace */ |
487 | while (isspace(linepos[0]) || linepos[0] == ',') | |
488 | linepos++; | |
aa8734ff | 489 | |
6880b25d KS |
490 | /* get the key */ |
491 | if (linepos[0] == '\0') | |
492 | return -1; | |
493 | *key = linepos; | |
81313e1b | 494 | |
6880b25d KS |
495 | while (1) { |
496 | linepos++; | |
497 | if (linepos[0] == '\0') | |
498 | return -1; | |
499 | if (isspace(linepos[0])) | |
81313e1b | 500 | break; |
6880b25d KS |
501 | if (linepos[0] == '=') |
502 | break; | |
503 | if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':')) | |
504 | if (linepos[1] == '=') | |
1ff1aa42 | 505 | break; |
953249a3 KS |
506 | } |
507 | ||
6880b25d KS |
508 | /* remember end of key */ |
509 | temp = linepos; | |
b2fe4b9a | 510 | |
6880b25d KS |
511 | /* skip whitespace after key */ |
512 | while (isspace(linepos[0])) | |
513 | linepos++; | |
514 | if (linepos[0] == '\0') | |
515 | return -1; | |
b2fe4b9a | 516 | |
6880b25d KS |
517 | /* get operation type */ |
518 | if (linepos[0] == '=' && linepos[1] == '=') { | |
519 | *op = KEY_OP_MATCH; | |
520 | linepos += 2; | |
521 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
522 | *op = KEY_OP_NOMATCH; | |
523 | linepos += 2; | |
524 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
525 | *op = KEY_OP_ADD; | |
526 | linepos += 2; | |
527 | } else if (linepos[0] == '=') { | |
528 | *op = KEY_OP_ASSIGN; | |
529 | linepos++; | |
530 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
531 | *op = KEY_OP_ASSIGN_FINAL; | |
532 | linepos += 2; | |
533 | } else | |
534 | return -1; | |
d0c8cb7d | 535 | |
6880b25d KS |
536 | /* terminate key */ |
537 | temp[0] = '\0'; | |
95776dc6 | 538 | |
6880b25d KS |
539 | /* skip whitespace after operator */ |
540 | while (isspace(linepos[0])) | |
541 | linepos++; | |
542 | if (linepos[0] == '\0') | |
543 | return -1; | |
aa8734ff | 544 | |
6880b25d KS |
545 | /* get the value*/ |
546 | if (linepos[0] == '"') | |
547 | linepos++; | |
548 | else | |
549 | return -1; | |
550 | *value = linepos; | |
aa8734ff | 551 | |
6880b25d KS |
552 | temp = strchr(linepos, '"'); |
553 | if (!temp) | |
554 | return -1; | |
555 | temp[0] = '\0'; | |
556 | temp++; | |
557 | dbg(udev, "%s '%s'-'%s'\n", operation_str[*op], *key, *value); | |
aa8734ff | 558 | |
6880b25d KS |
559 | /* move line to next key */ |
560 | *line = temp; | |
561 | return 0; | |
562 | } | |
95776dc6 | 563 | |
6880b25d KS |
564 | /* extract possible KEY{attr} */ |
565 | static char *get_key_attribute(struct udev *udev, char *str) | |
566 | { | |
567 | char *pos; | |
568 | char *attr; | |
95776dc6 | 569 | |
6880b25d KS |
570 | attr = strchr(str, '{'); |
571 | if (attr != NULL) { | |
572 | attr++; | |
573 | pos = strchr(attr, '}'); | |
574 | if (pos == NULL) { | |
575 | err(udev, "missing closing brace for format\n"); | |
576 | return NULL; | |
95776dc6 | 577 | } |
6880b25d KS |
578 | pos[0] = '\0'; |
579 | dbg(udev, "attribute='%s'\n", attr); | |
580 | return attr; | |
95776dc6 | 581 | } |
6880b25d KS |
582 | return NULL; |
583 | } | |
95776dc6 | 584 | |
6880b25d KS |
585 | static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type, |
586 | enum key_operation op, | |
587 | const char *value, const void *data) | |
588 | { | |
589 | struct token *token = &rule_tmp->token[rule_tmp->token_cur]; | |
590 | const char *attr = data; | |
591 | mode_t mode = 0000; | |
592 | ||
593 | switch (type) { | |
6880b25d KS |
594 | case TK_M_ACTION: |
595 | case TK_M_DEVPATH: | |
596 | case TK_M_KERNEL: | |
597 | case TK_M_SUBSYSTEM: | |
598 | case TK_M_DRIVER: | |
7aeeaedc | 599 | case TK_M_WAITFOR: |
6880b25d KS |
600 | case TK_M_DEVLINK: |
601 | case TK_M_NAME: | |
602 | case TK_M_KERNELS: | |
603 | case TK_M_SUBSYSTEMS: | |
604 | case TK_M_DRIVERS: | |
605 | case TK_M_PROGRAM: | |
606 | case TK_M_IMPORT_FILE: | |
607 | case TK_M_IMPORT_PROG: | |
608 | case TK_M_IMPORT_PARENT: | |
609 | case TK_M_RESULT: | |
610 | case TK_A_OWNER: | |
611 | case TK_A_GROUP: | |
612 | case TK_A_MODE: | |
613 | case TK_A_NAME: | |
614 | case TK_A_DEVLINK: | |
615 | case TK_A_GOTO: | |
616 | token->key.value_off = add_string(rule_tmp->rules, value); | |
e57e7bc1 | 617 | break; |
6880b25d KS |
618 | case TK_M_ENV: |
619 | case TK_M_ATTR: | |
620 | case TK_M_ATTRS: | |
621 | case TK_A_ATTR: | |
622 | case TK_A_ENV: | |
623 | token->key.value_off = add_string(rule_tmp->rules, value); | |
624 | token->key.attr_off = add_string(rule_tmp->rules, attr); | |
625 | break; | |
626 | case TK_M_TEST: | |
627 | if (data != NULL) | |
628 | mode = *(mode_t *)data; | |
629 | token->key.value_off = add_string(rule_tmp->rules, value); | |
630 | token->key.mode = mode; | |
631 | break; | |
632 | case TK_A_IGNORE_DEVICE: | |
633 | case TK_A_STRING_ESCAPE_NONE: | |
634 | case TK_A_STRING_ESCAPE_REPLACE: | |
635 | case TK_A_IGNORE_REMOVE: | |
636 | case TK_A_LAST_RULE: | |
637 | break; | |
638 | case TK_A_RUN: | |
639 | token->key.value_off = add_string(rule_tmp->rules, value); | |
640 | token->key.ignore_error = *(int *)data; | |
641 | break; | |
642 | case TK_A_NUM_FAKE_PART: | |
643 | token->key.num_fake_part = *(int *)data; | |
644 | break; | |
645 | case TK_A_DEVLINK_PRIO: | |
646 | token->key.devlink_prio = *(int *)data; | |
647 | break; | |
648 | case TK_A_OWNER_ID: | |
649 | token->key.uid = *(uid_t *)data; | |
650 | break; | |
651 | case TK_A_GROUP_ID: | |
652 | token->key.gid = *(gid_t *)data; | |
653 | break; | |
654 | case TK_A_MODE_ID: | |
655 | token->key.mode = *(mode_t *)data; | |
656 | break; | |
657 | case TK_A_EVENT_TIMEOUT: | |
658 | token->key.event_timeout = *(int *)data; | |
659 | break; | |
660 | case TK_RULE: | |
661 | case TK_PARENTS_MAX: | |
662 | case TK_END: | |
663 | case TK_UNDEF: | |
664 | err(rule_tmp->rules->udev, "wrong type %u\n", type); | |
665 | return -1; | |
724257d9 | 666 | } |
6880b25d KS |
667 | token->type = type; |
668 | token->key.op = op; | |
669 | rule_tmp->token_cur++; | |
670 | if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) { | |
671 | err(rule_tmp->rules->udev, "temporary rule array too small\n"); | |
672 | return -1; | |
e57e7bc1 | 673 | } |
6880b25d KS |
674 | return 0; |
675 | } | |
e57e7bc1 | 676 | |
6880b25d KS |
677 | #ifdef DEBUG |
678 | static void dump_token(struct udev_rules *rules, struct token *token) | |
679 | { | |
680 | enum token_type type = token->type; | |
681 | enum key_operation op = token->key.op; | |
682 | const char *value = &rules->buf[token->key.value_off]; | |
683 | const char *attr = &rules->buf[token->key.attr_off]; | |
684 | ||
685 | switch (type) { | |
686 | case TK_RULE: | |
687 | { | |
688 | const char *tks_ptr = (char *)rules->tokens; | |
689 | const char *tk_ptr = (char *)token; | |
690 | unsigned int off = tk_ptr - tks_ptr; | |
691 | ||
692 | dbg(rules->udev, "* RULE '%s', off: %u(%u), next: %u, label: '%s'\n", | |
693 | &rules->buf[token->rule.filename_off], | |
694 | off / (unsigned int) sizeof(struct token), off, | |
695 | token->rule.next_rule, | |
696 | &rules->buf[token->rule.label_off]); | |
697 | break; | |
5618b561 | 698 | } |
6880b25d KS |
699 | case TK_M_ACTION: |
700 | case TK_M_DEVPATH: | |
701 | case TK_M_KERNEL: | |
702 | case TK_M_SUBSYSTEM: | |
703 | case TK_M_DRIVER: | |
7aeeaedc | 704 | case TK_M_WAITFOR: |
6880b25d KS |
705 | case TK_M_DEVLINK: |
706 | case TK_M_NAME: | |
707 | case TK_M_KERNELS: | |
708 | case TK_M_SUBSYSTEMS: | |
709 | case TK_M_DRIVERS: | |
710 | case TK_M_PROGRAM: | |
711 | case TK_M_IMPORT_FILE: | |
712 | case TK_M_IMPORT_PROG: | |
713 | case TK_M_IMPORT_PARENT: | |
714 | case TK_M_RESULT: | |
715 | case TK_A_NAME: | |
716 | case TK_A_DEVLINK: | |
717 | case TK_A_OWNER: | |
718 | case TK_A_GROUP: | |
719 | case TK_A_MODE: | |
720 | case TK_A_RUN: | |
721 | dbg(rules->udev, "%s %s '%s'\n", token_str[type], operation_str[op], value); | |
722 | break; | |
723 | case TK_M_ATTR: | |
724 | case TK_M_ATTRS: | |
725 | case TK_M_ENV: | |
726 | case TK_A_ATTR: | |
727 | case TK_A_ENV: | |
728 | dbg(rules->udev, "%s %s '%s' '%s'\n", token_str[type], operation_str[op], attr, value); | |
729 | break; | |
730 | case TK_A_IGNORE_DEVICE: | |
731 | case TK_A_STRING_ESCAPE_NONE: | |
732 | case TK_A_STRING_ESCAPE_REPLACE: | |
733 | case TK_A_LAST_RULE: | |
734 | case TK_A_IGNORE_REMOVE: | |
735 | dbg(rules->udev, "%s\n", token_str[type]); | |
736 | break; | |
737 | case TK_M_TEST: | |
738 | dbg(rules->udev, "%s %s '%s' %#o\n", token_str[type], operation_str[op], value, token->key.mode); | |
739 | break; | |
740 | case TK_A_NUM_FAKE_PART: | |
741 | dbg(rules->udev, "%s %u\n", token_str[type], token->key.num_fake_part); | |
742 | break; | |
743 | case TK_A_DEVLINK_PRIO: | |
744 | dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.devlink_prio); | |
745 | break; | |
746 | case TK_A_OWNER_ID: | |
747 | dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.uid); | |
748 | break; | |
749 | case TK_A_GROUP_ID: | |
750 | dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.gid); | |
751 | break; | |
752 | case TK_A_MODE_ID: | |
753 | dbg(rules->udev, "%s %s %#o\n", token_str[type], operation_str[op], token->key.mode); | |
754 | break; | |
755 | case TK_A_EVENT_TIMEOUT: | |
756 | dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.event_timeout); | |
757 | break; | |
758 | case TK_A_GOTO: | |
759 | dbg(rules->udev, "%s '%s' %u\n", token_str[type], value, token->key.rule_goto); | |
760 | break; | |
761 | case TK_END: | |
762 | dbg(rules->udev, "* %s\n", token_str[type]); | |
763 | break; | |
764 | case TK_PARENTS_MAX: | |
765 | case TK_UNDEF: | |
766 | dbg(rules->udev, "unknown type %u\n", type); | |
767 | break; | |
5618b561 | 768 | } |
6880b25d | 769 | } |
5618b561 | 770 | |
6880b25d KS |
771 | static void dump_rules(struct udev_rules *rules) |
772 | { | |
773 | unsigned int i; | |
774 | ||
775 | dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n", | |
776 | rules->token_cur, | |
777 | rules->token_cur * sizeof(struct token), | |
778 | rules->buf_count, | |
779 | rules->buf_cur); | |
780 | for(i = 0; i < rules->token_cur; i++) | |
781 | dump_token(rules, &rules->tokens[i]); | |
782 | } | |
783 | #else | |
784 | static inline void dump_token(struct udev_rules *rules, struct token *token) {} | |
785 | static inline void dump_rules(struct udev_rules *rules) {} | |
786 | #endif /* DEBUG */ | |
5618b561 | 787 | |
6880b25d KS |
788 | static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) |
789 | { | |
790 | unsigned int i; | |
791 | unsigned int start = 0; | |
792 | unsigned int end = rule_tmp->token_cur; | |
793 | ||
794 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
795 | enum token_type next_val = TK_UNDEF; | |
796 | unsigned int next_idx; | |
797 | unsigned int j; | |
798 | ||
799 | /* find smallest value */ | |
800 | for (j = start; j < end; j++) { | |
801 | if (rule_tmp->token[j].type == TK_UNDEF) | |
802 | continue; | |
803 | if (next_val == TK_UNDEF || rule_tmp->token[j].type < next_val) { | |
804 | next_val = rule_tmp->token[j].type; | |
805 | next_idx = j; | |
db6e59df | 806 | } |
5618b561 | 807 | } |
5618b561 | 808 | |
6880b25d KS |
809 | /* add token and mark done */ |
810 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
811 | return -1; | |
812 | rule_tmp->token[next_idx].type = TK_UNDEF; | |
956cf793 | 813 | |
6880b25d KS |
814 | /* shrink range */ |
815 | if (next_idx == start) | |
816 | start++; | |
817 | if (next_idx+1 == end) | |
818 | end--; | |
d0c8cb7d | 819 | } |
e57e7bc1 | 820 | return 0; |
724257d9 GKH |
821 | } |
822 | ||
6880b25d KS |
823 | static int add_rule(struct udev_rules *rules, char *line, |
824 | const char *filename, unsigned int filename_off, unsigned int lineno) | |
724257d9 | 825 | { |
6880b25d KS |
826 | int valid = 0; |
827 | char *linepos; | |
828 | char *attr; | |
829 | int physdev = 0; | |
830 | struct rule_tmp rule_tmp; | |
724257d9 | 831 | |
6880b25d KS |
832 | memset(&rule_tmp, 0x00, sizeof(struct rule_tmp)); |
833 | rule_tmp.rules = rules; | |
834 | rule_tmp.rule.type = TK_RULE; | |
835 | rule_tmp.rule.rule.filename_off = filename_off; | |
724257d9 | 836 | |
6880b25d | 837 | linepos = line; |
6bf0ffe8 | 838 | while (1) { |
6880b25d KS |
839 | char *key; |
840 | char *value; | |
841 | enum key_operation op = KEY_OP_UNSET; | |
842 | ||
843 | if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) | |
6bf0ffe8 KS |
844 | break; |
845 | ||
6880b25d KS |
846 | if (strcasecmp(key, "ACTION") == 0) { |
847 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { | |
848 | err(rules->udev, "invalid ACTION operation\n"); | |
849 | goto invalid; | |
850 | } | |
851 | rule_add_token(&rule_tmp, TK_M_ACTION, op, value, NULL); | |
852 | valid = 1; | |
bf5d2964 KS |
853 | continue; |
854 | } | |
855 | ||
6880b25d KS |
856 | if (strcasecmp(key, "DEVPATH") == 0) { |
857 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { | |
858 | err(rules->udev, "invalid DEVPATH operation\n"); | |
859 | goto invalid; | |
fd9efc00 | 860 | } |
6880b25d KS |
861 | rule_add_token(&rule_tmp, TK_M_DEVPATH, op, value, NULL); |
862 | valid = 1; | |
863 | continue; | |
864 | } | |
c7521974 KS |
865 | |
866 | if (strcasecmp(key, "KERNEL") == 0) { | |
6880b25d | 867 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { |
c7521974 KS |
868 | err(rules->udev, "invalid KERNEL operation\n"); |
869 | goto invalid; | |
870 | } | |
6880b25d | 871 | rule_add_token(&rule_tmp, TK_M_KERNEL, op, value, NULL); |
c7521974 KS |
872 | valid = 1; |
873 | continue; | |
874 | } | |
875 | ||
876 | if (strcasecmp(key, "SUBSYSTEM") == 0) { | |
6880b25d | 877 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { |
c7521974 KS |
878 | err(rules->udev, "invalid SUBSYSTEM operation\n"); |
879 | goto invalid; | |
880 | } | |
881 | /* bus, class, subsystem events should all be the same */ | |
882 | if (strcmp(value, "subsystem") == 0 || | |
883 | strcmp(value, "bus") == 0 || | |
884 | strcmp(value, "class") == 0) { | |
885 | if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0) | |
886 | err(rules->udev, "'%s' must be specified as 'subsystem' \n" | |
887 | "please fix it in %s:%u", value, filename, lineno); | |
6880b25d | 888 | rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); |
c7521974 | 889 | } else |
6880b25d | 890 | rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); |
c7521974 KS |
891 | valid = 1; |
892 | continue; | |
893 | } | |
894 | ||
895 | if (strcasecmp(key, "DRIVER") == 0) { | |
6880b25d | 896 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { |
c7521974 KS |
897 | err(rules->udev, "invalid DRIVER operation\n"); |
898 | goto invalid; | |
899 | } | |
6880b25d | 900 | rule_add_token(&rule_tmp, TK_M_DRIVER, op, value, NULL); |
c7521974 KS |
901 | valid = 1; |
902 | continue; | |
903 | } | |
904 | ||
905 | if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) { | |
6880b25d | 906 | attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1); |
c7521974 KS |
907 | if (attr == NULL) { |
908 | err(rules->udev, "error parsing ATTR attribute\n"); | |
909 | goto invalid; | |
910 | } | |
6880b25d KS |
911 | if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) { |
912 | rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr); | |
913 | } else { | |
914 | rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr); | |
915 | } | |
c7521974 KS |
916 | valid = 1; |
917 | continue; | |
918 | } | |
919 | ||
920 | if (strcasecmp(key, "KERNELS") == 0 || | |
921 | strcasecmp(key, "ID") == 0) { | |
6880b25d | 922 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { |
c7521974 KS |
923 | err(rules->udev, "invalid KERNELS operation\n"); |
924 | goto invalid; | |
925 | } | |
6880b25d | 926 | rule_add_token(&rule_tmp, TK_M_KERNELS, op, value, NULL); |
c7521974 KS |
927 | valid = 1; |
928 | continue; | |
929 | } | |
930 | ||
931 | if (strcasecmp(key, "SUBSYSTEMS") == 0 || | |
932 | strcasecmp(key, "BUS") == 0) { | |
6880b25d | 933 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { |
c7521974 KS |
934 | err(rules->udev, "invalid SUBSYSTEMS operation\n"); |
935 | goto invalid; | |
936 | } | |
6880b25d | 937 | rule_add_token(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); |
c7521974 KS |
938 | valid = 1; |
939 | continue; | |
940 | } | |
941 | ||
942 | if (strcasecmp(key, "DRIVERS") == 0) { | |
6880b25d | 943 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { |
c7521974 KS |
944 | err(rules->udev, "invalid DRIVERS operation\n"); |
945 | goto invalid; | |
946 | } | |
6880b25d | 947 | rule_add_token(&rule_tmp, TK_M_DRIVERS, op, value, NULL); |
c7521974 KS |
948 | valid = 1; |
949 | continue; | |
950 | } | |
951 | ||
952 | if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 || | |
953 | strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) { | |
6880b25d | 954 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { |
c7521974 KS |
955 | err(rules->udev, "invalid ATTRS operation\n"); |
956 | goto invalid; | |
957 | } | |
6880b25d | 958 | attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1); |
c7521974 KS |
959 | if (attr == NULL) { |
960 | err(rules->udev, "error parsing ATTRS attribute\n"); | |
961 | goto invalid; | |
962 | } | |
963 | if (strncmp(attr, "device/", 7) == 0) | |
964 | err(rules->udev, "the 'device' link may not be available in a future kernel, " | |
965 | "please fix it in %s:%u", filename, lineno); | |
966 | else if (strstr(attr, "../") != NULL) | |
967 | err(rules->udev, "do not reference parent sysfs directories directly, " | |
968 | "it may break with a future kernel, please fix it in %s:%u", filename, lineno); | |
6880b25d | 969 | rule_add_token(&rule_tmp, TK_M_ATTRS, op, value, attr); |
c7521974 KS |
970 | valid = 1; |
971 | continue; | |
972 | } | |
973 | ||
974 | if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) { | |
6880b25d | 975 | attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1); |
c7521974 KS |
976 | if (attr == NULL) { |
977 | err(rules->udev, "error parsing ENV attribute\n"); | |
978 | goto invalid; | |
979 | } | |
980 | if (strncmp(attr, "PHYSDEV", 7) == 0) | |
981 | physdev = 1; | |
6880b25d KS |
982 | if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) { |
983 | if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0) | |
984 | goto invalid; | |
985 | } else { | |
986 | if (rule_add_token(&rule_tmp, TK_A_ENV, op, value, attr) != 0) | |
987 | goto invalid; | |
988 | } | |
c7521974 KS |
989 | valid = 1; |
990 | continue; | |
991 | } | |
992 | ||
993 | if (strcasecmp(key, "PROGRAM") == 0) { | |
6880b25d | 994 | rule_add_token(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
c7521974 KS |
995 | valid = 1; |
996 | continue; | |
997 | } | |
998 | ||
999 | if (strcasecmp(key, "RESULT") == 0) { | |
6880b25d | 1000 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { |
c7521974 KS |
1001 | err(rules->udev, "invalid RESULT operation\n"); |
1002 | goto invalid; | |
1003 | } | |
6880b25d | 1004 | rule_add_token(&rule_tmp, TK_M_RESULT, op, value, NULL); |
c7521974 KS |
1005 | valid = 1; |
1006 | continue; | |
1007 | } | |
1008 | ||
1009 | if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) { | |
6880b25d | 1010 | attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1); |
c7521974 KS |
1011 | if (attr != NULL && strstr(attr, "program")) { |
1012 | dbg(rules->udev, "IMPORT will be executed\n"); | |
6880b25d KS |
1013 | rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
1014 | valid = 1; | |
c7521974 KS |
1015 | } else if (attr != NULL && strstr(attr, "file")) { |
1016 | dbg(rules->udev, "IMPORT will be included as file\n"); | |
6880b25d KS |
1017 | rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
1018 | valid = 1; | |
c7521974 KS |
1019 | } else if (attr != NULL && strstr(attr, "parent")) { |
1020 | dbg(rules->udev, "IMPORT will include the parent values\n"); | |
6880b25d KS |
1021 | rule_add_token(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
1022 | valid = 1; | |
c7521974 KS |
1023 | } else { |
1024 | /* figure it out if it is executable */ | |
1025 | char file[UTIL_PATH_SIZE]; | |
1026 | char *pos; | |
1027 | struct stat statbuf; | |
1028 | ||
1029 | util_strlcpy(file, value, sizeof(file)); | |
1030 | pos = strchr(file, ' '); | |
1031 | if (pos) | |
1032 | pos[0] = '\0'; | |
1033 | ||
1034 | /* allow programs in /lib/udev called without the path */ | |
1035 | if (strchr(file, '/') == NULL) { | |
1036 | util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file)); | |
1037 | util_strlcat(file, value, sizeof(file)); | |
1038 | pos = strchr(file, ' '); | |
1039 | if (pos) | |
1040 | pos[0] = '\0'; | |
1041 | } | |
1042 | ||
1043 | dbg(rules->udev, "IMPORT auto mode for '%s'\n", file); | |
1044 | if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) { | |
6880b25d KS |
1045 | dbg(rules->udev, "IMPORT will be executed (autotype)\n"); |
1046 | rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); | |
1047 | valid = 1; | |
c7521974 | 1048 | } else { |
6880b25d KS |
1049 | dbg(rules->udev, "IMPORT will be included as file (autotype)\n"); |
1050 | rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); | |
1051 | valid = 1; | |
c7521974 KS |
1052 | } |
1053 | } | |
c7521974 KS |
1054 | continue; |
1055 | } | |
1056 | ||
1057 | if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) { | |
6880b25d KS |
1058 | mode_t mode = 0; |
1059 | ||
1060 | if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) { | |
c7521974 KS |
1061 | err(rules->udev, "invalid TEST operation\n"); |
1062 | goto invalid; | |
1063 | } | |
6880b25d KS |
1064 | attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1); |
1065 | if (attr != NULL) { | |
1066 | mode = strtol(attr, NULL, 8); | |
1067 | rule_add_token(&rule_tmp, TK_M_TEST, op, value, &mode); | |
1068 | } else { | |
1069 | rule_add_token(&rule_tmp, TK_M_TEST, op, value, NULL); | |
1070 | } | |
c7521974 KS |
1071 | valid = 1; |
1072 | continue; | |
1073 | } | |
1074 | ||
1075 | if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) { | |
6880b25d KS |
1076 | int flag = 0; |
1077 | ||
1078 | attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1); | |
1079 | if (attr != NULL && strstr(attr, "ignore_error")) | |
1080 | flag = 1; | |
1081 | rule_add_token(&rule_tmp, TK_A_RUN, op, value, &flag); | |
c7521974 KS |
1082 | valid = 1; |
1083 | continue; | |
1084 | } | |
1085 | ||
1086 | if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) { | |
6880b25d | 1087 | rule_add_token(&rule_tmp, TK_M_WAITFOR, 0, value, NULL); |
c7521974 KS |
1088 | valid = 1; |
1089 | continue; | |
1090 | } | |
1091 | ||
1092 | if (strcasecmp(key, "LABEL") == 0) { | |
6880b25d | 1093 | rule_tmp.rule.rule.label_off = add_string(rules, value); |
c7521974 KS |
1094 | valid = 1; |
1095 | continue; | |
1096 | } | |
1097 | ||
1098 | if (strcasecmp(key, "GOTO") == 0) { | |
6880b25d | 1099 | rule_add_token(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
c7521974 KS |
1100 | valid = 1; |
1101 | continue; | |
1102 | } | |
1103 | ||
1104 | if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) { | |
6880b25d KS |
1105 | if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) { |
1106 | rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL); | |
1107 | } else { | |
1108 | if (value[0] == '\0') | |
1109 | dbg(rules->udev, "name empty, node creation suppressed\n"); | |
1110 | rule_add_token(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1111 | attr = get_key_attribute(rules->udev, key + sizeof("NAME")-1); | |
1112 | if (attr != NULL) { | |
1113 | if (strstr(attr, "all_partitions") != NULL) { | |
1114 | int num = DEFAULT_FAKE_PARTITIONS_COUNT; | |
1115 | ||
1116 | dbg(rules->udev, "creation of partition nodes requested\n"); | |
1117 | rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num); | |
1118 | } | |
1119 | if (strstr(attr, "ignore_remove") != NULL) { | |
1120 | dbg(rules->udev, "remove event should be ignored\n"); | |
1121 | rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL); | |
1122 | } | |
c7521974 KS |
1123 | } |
1124 | } | |
c7521974 KS |
1125 | continue; |
1126 | } | |
1127 | ||
1128 | if (strcasecmp(key, "SYMLINK") == 0) { | |
6880b25d KS |
1129 | if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) |
1130 | rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL); | |
1131 | else | |
1132 | rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
1133 | valid = 1; | |
1134 | continue; | |
1135 | } | |
c7521974 KS |
1136 | |
1137 | if (strcasecmp(key, "OWNER") == 0) { | |
6880b25d KS |
1138 | uid_t uid; |
1139 | char *endptr; | |
1140 | ||
1141 | uid = strtoul(value, &endptr, 10); | |
1142 | if (endptr[0] == '\0') { | |
1143 | rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1144 | } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) { | |
1145 | uid = util_lookup_user(rules->udev, value); | |
1146 | rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1147 | } else { | |
1148 | rule_add_token(&rule_tmp, TK_A_OWNER, op, value, NULL); | |
c7521974 | 1149 | } |
6880b25d | 1150 | valid = 1; |
c7521974 KS |
1151 | continue; |
1152 | } | |
1153 | ||
1154 | if (strcasecmp(key, "GROUP") == 0) { | |
6880b25d KS |
1155 | gid_t gid; |
1156 | char *endptr; | |
1157 | ||
1158 | gid = strtoul(value, &endptr, 10); | |
1159 | if (endptr[0] == '\0') { | |
1160 | rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1161 | } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) { | |
1162 | gid = util_lookup_group(rules->udev, value); | |
1163 | rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1164 | } else { | |
1165 | rule_add_token(&rule_tmp, TK_A_GROUP, op, value, NULL); | |
c7521974 | 1166 | } |
6880b25d | 1167 | valid = 1; |
c7521974 KS |
1168 | continue; |
1169 | } | |
1170 | ||
1171 | if (strcasecmp(key, "MODE") == 0) { | |
6880b25d KS |
1172 | mode_t mode; |
1173 | char *endptr; | |
1174 | ||
1175 | mode = strtol(value, &endptr, 8); | |
1176 | if (endptr[0] == '\0') | |
1177 | rule_add_token(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1178 | else | |
1179 | rule_add_token(&rule_tmp, TK_A_MODE, op, value, NULL); | |
c7521974 KS |
1180 | valid = 1; |
1181 | continue; | |
1182 | } | |
1183 | ||
1184 | if (strcasecmp(key, "OPTIONS") == 0) { | |
1185 | const char *pos; | |
1186 | ||
1187 | if (strstr(value, "last_rule") != NULL) { | |
1188 | dbg(rules->udev, "last rule to be applied\n"); | |
6880b25d | 1189 | rule_add_token(&rule_tmp, TK_A_LAST_RULE, 0, NULL, NULL); |
c7521974 KS |
1190 | } |
1191 | if (strstr(value, "ignore_device") != NULL) { | |
1192 | dbg(rules->udev, "device should be ignored\n"); | |
6880b25d | 1193 | rule_add_token(&rule_tmp, TK_A_IGNORE_DEVICE, 0, NULL, NULL); |
c7521974 KS |
1194 | } |
1195 | if (strstr(value, "ignore_remove") != NULL) { | |
1196 | dbg(rules->udev, "remove event should be ignored\n"); | |
6880b25d | 1197 | rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL); |
c7521974 KS |
1198 | } |
1199 | pos = strstr(value, "link_priority="); | |
1200 | if (pos != NULL) { | |
6880b25d KS |
1201 | int prio = atoi(&pos[strlen("link_priority=")]); |
1202 | ||
1203 | rule_add_token(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio); | |
1204 | dbg(rules->udev, "link priority=%i\n", prio); | |
c7521974 KS |
1205 | } |
1206 | pos = strstr(value, "event_timeout="); | |
1207 | if (pos != NULL) { | |
6880b25d KS |
1208 | int tout = atoi(&pos[strlen("event_timeout=")]); |
1209 | ||
1210 | rule_add_token(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout); | |
1211 | dbg(rules->udev, "event timout=%i\n", tout); | |
c7521974 KS |
1212 | } |
1213 | pos = strstr(value, "string_escape="); | |
1214 | if (pos != NULL) { | |
1215 | pos = &pos[strlen("string_escape=")]; | |
1216 | if (strncmp(pos, "none", strlen("none")) == 0) | |
6880b25d | 1217 | rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL); |
c7521974 | 1218 | else if (strncmp(pos, "replace", strlen("replace")) == 0) |
6880b25d | 1219 | rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL); |
c7521974 KS |
1220 | } |
1221 | if (strstr(value, "all_partitions") != NULL) { | |
6880b25d KS |
1222 | int num = DEFAULT_FAKE_PARTITIONS_COUNT; |
1223 | ||
1224 | rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num); | |
c7521974 | 1225 | dbg(rules->udev, "creation of partition nodes requested\n"); |
c7521974 KS |
1226 | } |
1227 | valid = 1; | |
1228 | continue; | |
1229 | } | |
c7521974 KS |
1230 | err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno); |
1231 | } | |
1232 | ||
6880b25d KS |
1233 | if (physdev) |
1234 | err(rules->udev, "PHYSDEV* values are deprecated and not available on recent kernels, \n" | |
c7521974 KS |
1235 | "please fix it in %s:%u", filename, lineno); |
1236 | ||
1237 | /* skip line if not any valid key was found */ | |
1238 | if (!valid) | |
1239 | goto invalid; | |
1240 | ||
6880b25d KS |
1241 | /* add rule token */ |
1242 | if (add_token(rules, &rule_tmp.rule) != 0) | |
1243 | goto invalid; | |
c7521974 | 1244 | |
6880b25d KS |
1245 | /* add tokens to list, sorted by type */ |
1246 | if (sort_token(rules, &rule_tmp) != 0) | |
1247 | goto invalid; | |
1248 | return 0; | |
c7521974 KS |
1249 | invalid: |
1250 | err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno); | |
1251 | return -1; | |
1252 | } | |
1253 | ||
1254 | static int parse_file(struct udev_rules *rules, const char *filename) | |
1255 | { | |
1256 | FILE *f; | |
6880b25d KS |
1257 | unsigned int filename_off; |
1258 | unsigned int first_token; | |
c7521974 | 1259 | char line[UTIL_LINE_SIZE]; |
6880b25d KS |
1260 | int line_nr = 0; |
1261 | unsigned int i; | |
c7521974 | 1262 | |
c7521974 KS |
1263 | info(rules->udev, "reading '%s' as rules file\n", filename); |
1264 | ||
1265 | f = fopen(filename, "r"); | |
1266 | if (f == NULL) | |
1267 | return -1; | |
1268 | ||
6880b25d KS |
1269 | filename_off = add_string(rules, filename); |
1270 | first_token = rules->token_cur; | |
1271 | ||
c7521974 | 1272 | while(fgets(line, sizeof(line), f) != NULL) { |
c7521974 KS |
1273 | char *key; |
1274 | size_t len; | |
1275 | ||
1276 | /* skip whitespace */ | |
1277 | line_nr++; | |
1278 | key = line; | |
1279 | while (isspace(key[0])) | |
1280 | key++; | |
1281 | ||
1282 | /* comment */ | |
1283 | if (key[0] == '#') | |
1284 | continue; | |
1285 | ||
1286 | len = strlen(line); | |
1287 | if (len < 3) | |
1288 | continue; | |
1289 | ||
1290 | /* continue reading if backslash+newline is found */ | |
1291 | while (line[len-2] == '\\') { | |
1292 | if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) | |
1293 | break; | |
1294 | line_nr++; | |
1295 | len = strlen(line); | |
1296 | } | |
1297 | ||
1298 | if (len+1 >= sizeof(line)) { | |
1299 | err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr); | |
1300 | continue; | |
1301 | } | |
6880b25d | 1302 | add_rule(rules, key, filename, filename_off, line_nr); |
c7521974 KS |
1303 | } |
1304 | fclose(f); | |
1305 | ||
6880b25d KS |
1306 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ |
1307 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1308 | if (rules->tokens[i].type == TK_A_GOTO) { | |
1309 | char *label = &rules->buf[rules->tokens[i].key.value_off]; | |
1310 | unsigned int j; | |
1311 | ||
1312 | for (j = i+1; j < rules->token_cur; j++) { | |
1313 | if (rules->tokens[j].type != TK_RULE) | |
1314 | continue; | |
1315 | if (rules->tokens[j].rule.label_off == 0) | |
1316 | continue; | |
1317 | if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0) | |
1318 | continue; | |
1319 | rules->tokens[i].key.rule_goto = j; | |
c7521974 | 1320 | } |
6880b25d KS |
1321 | if (rules->tokens[i].key.rule_goto == 0) |
1322 | err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename); | |
c7521974 KS |
1323 | } |
1324 | } | |
1325 | return 0; | |
1326 | } | |
1327 | ||
1328 | static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix) | |
1329 | { | |
1330 | struct dirent *ent; | |
1331 | DIR *dir; | |
1332 | char filename[UTIL_PATH_SIZE]; | |
1333 | ||
1334 | dbg(udev, "open directory '%s'\n", dirname); | |
1335 | dir = opendir(dirname); | |
1336 | if (dir == NULL) { | |
1337 | err(udev, "unable to open '%s': %m\n", dirname); | |
1338 | return -1; | |
1339 | } | |
1340 | ||
1341 | while (1) { | |
1342 | ent = readdir(dir); | |
1343 | if (ent == NULL || ent->d_name[0] == '\0') | |
1344 | break; | |
1345 | ||
1346 | if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#')) | |
1347 | continue; | |
1348 | ||
1349 | /* look for file matching with specified suffix */ | |
1350 | if (suffix != NULL) { | |
1351 | const char *ext; | |
1352 | ||
1353 | ext = strrchr(ent->d_name, '.'); | |
1354 | if (ext == NULL) | |
1355 | continue; | |
1356 | if (strcmp(ext, suffix) != 0) | |
1357 | continue; | |
1358 | } | |
1359 | dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name); | |
1360 | ||
1361 | snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name); | |
1362 | filename[sizeof(filename)-1] = '\0'; | |
1363 | udev_list_entry_add(udev, file_list, filename, NULL, 1, 1); | |
1364 | } | |
1365 | ||
1366 | closedir(dir); | |
1367 | return 0; | |
1368 | } | |
1369 | ||
d7ddce18 | 1370 | struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) |
c7521974 | 1371 | { |
d7ddce18 | 1372 | struct udev_rules *rules; |
c7521974 KS |
1373 | struct stat statbuf; |
1374 | char filename[PATH_MAX]; | |
1375 | struct udev_list_node file_list; | |
1376 | struct udev_list_entry *file_loop, *file_tmp; | |
6880b25d KS |
1377 | unsigned int prev_rule; |
1378 | struct token end_token; | |
1379 | unsigned int i; | |
c7521974 | 1380 | |
6880b25d | 1381 | rules = malloc(sizeof(struct udev_rules)); |
d7ddce18 | 1382 | if (rules == NULL) |
6880b25d KS |
1383 | return NULL; |
1384 | memset(rules, 0x00, sizeof(struct udev_rules)); | |
c7521974 KS |
1385 | rules->udev = udev; |
1386 | rules->resolve_names = resolve_names; | |
1387 | udev_list_init(&file_list); | |
1388 | ||
6880b25d KS |
1389 | /* init token array and string buffer */ |
1390 | rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); | |
1391 | if (rules->tokens != NULL) | |
1392 | rules->token_max = PREALLOC_TOKEN; | |
1393 | rules->buf = malloc(PREALLOC_STRBUF); | |
1394 | if (rules->buf != NULL) | |
1395 | rules->buf_max = PREALLOC_STRBUF; | |
1396 | info(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n", | |
1397 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max); | |
1398 | /* offset 0 in the string buffer is always empty */ | |
1399 | add_string(rules, ""); | |
1400 | ||
c7521974 KS |
1401 | if (udev_get_rules_path(udev) != NULL) { |
1402 | /* custom rules location for testing */ | |
1403 | add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules"); | |
1404 | } else { | |
1405 | struct udev_list_node sort_list; | |
1406 | struct udev_list_entry *sort_loop, *sort_tmp; | |
1407 | ||
1408 | /* read user/custom rules */ | |
1409 | add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules"); | |
1410 | ||
1411 | /* read dynamic/temporary rules */ | |
1412 | util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename)); | |
1413 | util_strlcat(filename, "/.udev/rules.d", sizeof(filename)); | |
1414 | if (stat(filename, &statbuf) != 0) { | |
54808d77 | 1415 | util_create_path(udev, filename); |
c7521974 KS |
1416 | udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755); |
1417 | mkdir(filename, 0755); | |
1418 | udev_selinux_resetfscreatecon(udev); | |
1419 | } | |
1420 | udev_list_init(&sort_list); | |
1421 | add_matching_files(udev, &sort_list, filename, ".rules"); | |
1422 | ||
1423 | /* read default rules */ | |
1424 | add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules"); | |
1425 | ||
1426 | /* sort all rules files by basename into list of files */ | |
1427 | udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) { | |
1428 | const char *sort_name = udev_list_entry_get_name(sort_loop); | |
1429 | const char *sort_base = strrchr(sort_name, '/'); | |
1430 | ||
1431 | if (sort_base == NULL) | |
1432 | continue; | |
1433 | ||
1434 | udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) { | |
1435 | const char *file_name = udev_list_entry_get_name(file_loop); | |
1436 | const char *file_base = strrchr(file_name, '/'); | |
1437 | ||
1438 | if (file_base == NULL) | |
1439 | continue; | |
1440 | if (strcmp(file_base, sort_base) == 0) { | |
1441 | info(udev, "rule file basename '%s' already added, ignoring '%s'\n", | |
1442 | file_name, sort_name); | |
1443 | udev_list_entry_remove(sort_loop); | |
1444 | sort_loop = NULL; | |
1445 | break; | |
1446 | } | |
1447 | if (strcmp(file_base, sort_base) > 0) | |
1448 | break; | |
1449 | } | |
1450 | if (sort_loop != NULL) | |
1451 | udev_list_entry_move_before(sort_loop, file_loop); | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | /* parse list of files */ | |
1456 | udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) { | |
1457 | const char *file_name = udev_list_entry_get_name(file_loop); | |
1458 | ||
1459 | if (stat(file_name, &statbuf) == 0 && statbuf.st_size > 0) | |
1460 | parse_file(rules, file_name); | |
1461 | else | |
1462 | info(udev, "can not read '%s'\n", file_name); | |
1463 | udev_list_entry_remove(file_loop); | |
1464 | } | |
6880b25d KS |
1465 | |
1466 | memset(&end_token, 0x00, sizeof(struct token)); | |
1467 | end_token.type = TK_END; | |
1468 | add_token(rules, &end_token); | |
1469 | ||
1470 | /* shrink allocate buffers */ | |
1471 | if (rules->token_cur < rules->token_max) { | |
1472 | struct token *tokens; | |
1473 | ||
1474 | tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token)); | |
1475 | if (tokens != NULL || rules->token_cur == 0) { | |
1476 | rules->tokens = tokens; | |
1477 | rules->token_max = rules->token_cur; | |
1478 | } | |
1479 | } | |
1480 | if (rules->buf_cur < rules->buf_max) { | |
1481 | char *buf; | |
1482 | ||
1483 | buf = realloc(rules->buf, rules->buf_cur); | |
1484 | if (buf != NULL || rules->buf_cur == 0) { | |
1485 | rules->buf = buf; | |
1486 | rules->buf_max = rules->buf_cur; | |
1487 | } | |
1488 | } | |
1489 | info(udev, "shrunk to %lu bytes tokens (%u * %zu bytes), %zu bytes buffer\n", | |
1490 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max); | |
1491 | ||
1492 | /* link all TK_RULE tokens to be able to fast-forward to next TK_RULE */ | |
1493 | prev_rule = 0; | |
1494 | for (i = 1; i < rules->token_cur; i++) { | |
1495 | if (rules->tokens[i].type == TK_RULE) { | |
1496 | rules->tokens[prev_rule].rule.next_rule = i; | |
1497 | prev_rule = i; | |
1498 | } | |
1499 | } | |
1500 | dump_rules(rules); | |
d7ddce18 | 1501 | return rules; |
c7521974 KS |
1502 | } |
1503 | ||
d7ddce18 | 1504 | void udev_rules_unref(struct udev_rules *rules) |
c7521974 | 1505 | { |
d7ddce18 KS |
1506 | if (rules == NULL) |
1507 | return; | |
6880b25d KS |
1508 | free(rules->tokens); |
1509 | free(rules->buf); | |
d7ddce18 | 1510 | free(rules); |
c7521974 | 1511 | } |
6880b25d KS |
1512 | |
1513 | static int match_key(struct udev_rules *rules, struct token *token, const char *val) | |
1514 | { | |
1515 | const char *key_name = token_str[token->type]; | |
1516 | char *key_value = &rules->buf[token->key.value_off]; | |
1517 | char *pos; | |
1518 | int match = 0; | |
1519 | ||
1520 | if (val == NULL) | |
1521 | val = ""; | |
1522 | ||
1523 | /* look for a matching string, parts are separated by '|' */ | |
1524 | if (strchr(key_value, '|') != NULL) { | |
1525 | char value[UTIL_PATH_SIZE]; | |
1526 | ||
1527 | util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value)); | |
1528 | key_value = value; | |
1529 | while (key_value != NULL) { | |
1530 | pos = strchr(key_value, '|'); | |
1531 | if (pos != NULL) { | |
1532 | pos[0] = '\0'; | |
1533 | pos = &pos[1]; | |
1534 | } | |
1535 | dbg(rules->udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val); | |
1536 | match = (fnmatch(key_value, val, 0) == 0); | |
1537 | if (match) | |
1538 | break; | |
1539 | key_value = pos; | |
1540 | } | |
1541 | } else { | |
1542 | match = (fnmatch(key_value, val, 0) == 0); | |
1543 | } | |
1544 | ||
1545 | if (match && (token->key.op == KEY_OP_MATCH)) { | |
1546 | dbg(rules->udev, "%s is true (matching value)\n", key_name); | |
1547 | return 0; | |
1548 | } | |
1549 | if (!match && (token->key.op == KEY_OP_NOMATCH)) { | |
1550 | dbg(rules->udev, "%s is true (non-matching value)\n", key_name); | |
1551 | return 0; | |
1552 | } | |
1553 | dbg(rules->udev, "%s is not true\n", key_name); | |
1554 | return -1; | |
1555 | } | |
1556 | ||
1557 | static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur) | |
1558 | { | |
1559 | char attr[UTIL_PATH_SIZE]; | |
1560 | const char *key_name = &rules->buf[cur->key.attr_off]; | |
1561 | const char *key_value = &rules->buf[cur->key.value_off]; | |
1562 | char value[UTIL_NAME_SIZE] = ""; | |
1563 | size_t len; | |
1564 | ||
1565 | util_strlcpy(attr, key_name, sizeof(attr)); | |
1566 | util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1); | |
1567 | if (value[0] == '\0') { | |
1568 | const char *val; | |
1569 | ||
1570 | val = udev_device_get_sysattr_value(dev, key_name); | |
1571 | if (val != NULL) | |
1572 | util_strlcpy(value, val, sizeof(value)); | |
1573 | } | |
1574 | if (value[0]=='\0') | |
1575 | return -1; | |
1576 | ||
1577 | /* strip trailing whitespace of value, if not asked to match for it */ | |
1578 | len = strlen(key_value); | |
1579 | if (len > 0 && !isspace(key_value[len-1])) { | |
1580 | len = strlen(value); | |
1581 | while (len > 0 && isspace(value[--len])) | |
1582 | value[len] = '\0'; | |
1583 | dbg(rules->udev, "removed trailing whitespace from '%s'\n", value); | |
1584 | } | |
1585 | return match_key(rules, cur, value); | |
1586 | } | |
1587 | ||
1588 | enum escape_type { | |
1589 | ESCAPE_UNSET, | |
1590 | ESCAPE_NONE, | |
1591 | ESCAPE_REPLACE, | |
1592 | }; | |
1593 | ||
1594 | int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event) | |
1595 | { | |
1596 | struct token *rule; | |
1597 | struct token *cur; | |
1598 | ||
1599 | if (rules->tokens == NULL) | |
1600 | return -1; | |
1601 | ||
1602 | /* loop through token list, match, run actions or forward to next rule */ | |
1603 | cur = &rules->tokens[0]; | |
1604 | while (cur != NULL && cur->type != TK_END) { | |
1605 | enum escape_type esc = ESCAPE_UNSET; | |
1606 | unsigned int idx; | |
1607 | ||
1608 | dump_token(rules, cur); | |
1609 | switch (cur->type) { | |
1610 | case TK_RULE: | |
1611 | /* current rule */ | |
1612 | rule = cur; | |
1613 | esc = ESCAPE_UNSET; | |
1614 | break; | |
6880b25d KS |
1615 | case TK_M_ACTION: |
1616 | if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0) | |
1617 | goto nomatch; | |
1618 | break; | |
1619 | case TK_M_DEVPATH: | |
1620 | if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0) | |
1621 | goto nomatch; | |
1622 | break; | |
1623 | case TK_M_KERNEL: | |
1624 | if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0) | |
1625 | goto nomatch; | |
1626 | break; | |
1627 | case TK_M_DEVLINK: | |
1628 | { | |
1629 | size_t devlen = strlen(udev_get_dev_path(event->udev))+1; | |
1630 | struct udev_list_entry *list_entry; | |
1631 | int match = 0; | |
1632 | ||
1633 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { | |
1634 | const char *devlink; | |
1635 | ||
1636 | devlink = &udev_list_entry_get_name(list_entry)[devlen]; | |
1637 | if (match_key(rules, cur, devlink) == 0) { | |
1638 | match = 1; | |
1639 | break; | |
1640 | } | |
1641 | } | |
1642 | if (!match) | |
1643 | goto nomatch; | |
1644 | break; | |
1645 | } | |
1646 | case TK_M_NAME: | |
1647 | if (match_key(rules, cur, event->name) != 0) | |
1648 | goto nomatch; | |
1649 | break; | |
1650 | case TK_M_ENV: | |
1651 | { | |
1652 | struct udev_list_entry *list_entry; | |
1653 | const char *key_name = &rules->buf[cur->key.attr_off]; | |
1654 | const char *value; | |
1655 | ||
1656 | list_entry = udev_device_get_properties_list_entry(event->dev); | |
1657 | list_entry = udev_list_entry_get_by_name(list_entry, key_name); | |
1658 | value = udev_list_entry_get_value(list_entry); | |
1659 | if (value == NULL) { | |
1660 | dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name); | |
1661 | value = ""; | |
1662 | } | |
1663 | if (match_key(rules, cur, value)) | |
1664 | goto nomatch; | |
1665 | break; | |
1666 | } | |
1667 | case TK_M_SUBSYSTEM: | |
1668 | if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0) | |
1669 | goto nomatch; | |
1670 | break; | |
1671 | case TK_M_DRIVER: | |
1672 | if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0) | |
1673 | goto nomatch; | |
1674 | break; | |
7aeeaedc AJ |
1675 | case TK_M_WAITFOR: |
1676 | { | |
1677 | char filename[UTIL_PATH_SIZE]; | |
1678 | int found; | |
1679 | ||
1680 | util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename)); | |
1681 | udev_event_apply_format(event, filename, sizeof(filename)); | |
1682 | found = (wait_for_file(event->dev, filename, 10) == 0); | |
1683 | if (!found && (cur->key.op != KEY_OP_NOMATCH)) | |
1684 | goto nomatch; | |
1685 | break; | |
1686 | } | |
6880b25d KS |
1687 | case TK_M_ATTR: |
1688 | if (match_attr(rules, event->dev, event, cur) != 0) | |
1689 | goto nomatch; | |
1690 | break; | |
1691 | case TK_M_KERNELS: | |
1692 | case TK_M_SUBSYSTEMS: | |
1693 | case TK_M_DRIVERS: | |
1694 | case TK_M_ATTRS: | |
1695 | { | |
1696 | struct token *next; | |
1697 | ||
1698 | /* get whole sequence of parent matches */ | |
1699 | next = cur; | |
1700 | while (next->type < TK_PARENTS_MAX) | |
1701 | next++; | |
1702 | ||
1703 | /* loop over parents */ | |
1704 | event->dev_parent = event->dev; | |
1705 | while (1) { | |
1706 | struct token *key; | |
1707 | ||
1708 | dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent)); | |
1709 | /* loop over sequence of parent match keys */ | |
1710 | for (key = cur; key < next; key++ ) { | |
1711 | dump_token(rules, key); | |
1712 | switch(key->type) { | |
1713 | case TK_M_KERNELS: | |
1714 | if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0) | |
1715 | goto try_parent; | |
1716 | break; | |
1717 | case TK_M_SUBSYSTEMS: | |
1718 | if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0) | |
1719 | goto try_parent; | |
1720 | break; | |
1721 | case TK_M_DRIVERS: | |
1722 | if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0) | |
1723 | goto try_parent; | |
1724 | break; | |
1725 | case TK_M_ATTRS: | |
1726 | if (match_attr(rules, event->dev_parent, event, key) != 0) | |
1727 | goto try_parent; | |
1728 | break; | |
1729 | default: | |
1730 | goto nomatch; | |
1731 | } | |
1732 | dbg(event->udev, "parent key matched\n"); | |
1733 | } | |
1734 | dbg(event->udev, "all parent keys matched\n"); | |
1735 | /* all keys matched */ | |
1736 | break; | |
1737 | ||
1738 | try_parent: | |
1739 | event->dev_parent = udev_device_get_parent(event->dev_parent); | |
1740 | if (event->dev_parent == NULL) | |
1741 | goto nomatch; | |
1742 | } | |
1743 | /* move behind our sequence of parent match keys */ | |
1744 | cur = next; | |
1745 | continue; | |
1746 | } | |
1747 | case TK_M_TEST: | |
1748 | { | |
1749 | char filename[UTIL_PATH_SIZE]; | |
1750 | struct stat statbuf; | |
1751 | int match; | |
1752 | ||
1753 | util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename)); | |
1754 | udev_event_apply_format(event, filename, sizeof(filename)); | |
1755 | if (util_resolve_subsys_kernel(event->udev, NULL, filename, sizeof(filename), 0) != 0) | |
1756 | if (filename[0] != '/') { | |
1757 | char tmp[UTIL_PATH_SIZE]; | |
1758 | ||
1759 | util_strlcpy(tmp, udev_device_get_syspath(event->dev), sizeof(tmp)); | |
1760 | util_strlcat(tmp, "/", sizeof(tmp)); | |
1761 | util_strlcat(tmp, filename, sizeof(tmp)); | |
1762 | util_strlcpy(filename, tmp, sizeof(filename)); | |
1763 | } | |
1764 | ||
1765 | attr_subst_subdir(filename, sizeof(filename)); | |
1766 | ||
1767 | match = (stat(filename, &statbuf) == 0); | |
1768 | info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n"); | |
1769 | if (match && cur->key.mode > 0) { | |
1770 | match = ((statbuf.st_mode & cur->key.mode) > 0); | |
1771 | info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode, | |
1772 | match ? "matches" : "does not match", cur->key.mode); | |
1773 | } | |
1774 | if (match && cur->key.op == KEY_OP_NOMATCH) | |
1775 | goto nomatch; | |
1776 | if (!match && cur->key.op == KEY_OP_MATCH) | |
1777 | goto nomatch; | |
1778 | break; | |
1779 | } | |
1780 | case TK_M_PROGRAM: | |
1781 | { | |
1782 | char program[UTIL_PATH_SIZE]; | |
1783 | char **envp; | |
1784 | char result[UTIL_PATH_SIZE]; | |
1785 | ||
40fd3bc8 KS |
1786 | free(event->program_result); |
1787 | event->program_result = NULL; | |
6880b25d KS |
1788 | util_strlcpy(program, &rules->buf[cur->key.value_off], sizeof(program)); |
1789 | udev_event_apply_format(event, program, sizeof(program)); | |
1790 | envp = udev_device_get_properties_envp(event->dev); | |
1791 | if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) { | |
6880b25d KS |
1792 | if (cur->key.op != KEY_OP_NOMATCH) |
1793 | goto nomatch; | |
1794 | } else { | |
1795 | int count; | |
1796 | ||
1797 | util_remove_trailing_chars(result, '\n'); | |
1798 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
1799 | count = util_replace_chars(result, ALLOWED_CHARS_INPUT); | |
1800 | if (count > 0) | |
1801 | info(event->udev, "%i character(s) replaced\n" , count); | |
1802 | } | |
40fd3bc8 KS |
1803 | event->program_result = strdup(result); |
1804 | dbg(event->udev, "storing result '%s'\n", event->program_result); | |
6880b25d KS |
1805 | if (cur->key.op == KEY_OP_NOMATCH) |
1806 | goto nomatch; | |
1807 | } | |
1808 | break; | |
1809 | } | |
1810 | case TK_M_IMPORT_FILE: | |
1811 | { | |
1812 | char import[UTIL_PATH_SIZE]; | |
1813 | ||
1814 | util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import)); | |
1815 | udev_event_apply_format(event, import, sizeof(import)); | |
1816 | if (import_file_into_properties(event->dev, import) != 0) | |
1817 | if (cur->key.op != KEY_OP_NOMATCH) | |
1818 | goto nomatch; | |
1819 | break; | |
1820 | } | |
1821 | case TK_M_IMPORT_PROG: | |
1822 | { | |
1823 | char import[UTIL_PATH_SIZE]; | |
1824 | ||
1825 | util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import)); | |
1826 | udev_event_apply_format(event, import, sizeof(import)); | |
1827 | if (import_program_into_properties(event->dev, import) != 0) | |
1828 | if (cur->key.op != KEY_OP_NOMATCH) | |
1829 | goto nomatch; | |
1830 | break; | |
1831 | } | |
1832 | case TK_M_IMPORT_PARENT: | |
1833 | { | |
1834 | char import[UTIL_PATH_SIZE]; | |
1835 | ||
1836 | util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import)); | |
1837 | udev_event_apply_format(event, import, sizeof(import)); | |
1838 | if (import_parent_into_properties(event->dev, import) != 0) | |
1839 | if (cur->key.op != KEY_OP_NOMATCH) | |
1840 | goto nomatch; | |
1841 | break; | |
1842 | } | |
1843 | case TK_M_RESULT: | |
1844 | if (match_key(rules, cur, event->program_result) != 0) | |
1845 | goto nomatch; | |
1846 | break; | |
1847 | ||
1848 | case TK_A_IGNORE_DEVICE: | |
1849 | event->ignore_device = 1; | |
1850 | return 0; | |
1851 | break; | |
1852 | case TK_A_STRING_ESCAPE_NONE: | |
1853 | esc = ESCAPE_NONE; | |
1854 | break; | |
1855 | case TK_A_STRING_ESCAPE_REPLACE: | |
1856 | esc = ESCAPE_REPLACE; | |
1857 | break; | |
1858 | case TK_A_NUM_FAKE_PART: | |
1859 | if (strcmp(udev_device_get_subsystem(event->dev), "block") != 0) | |
1860 | break; | |
1861 | if (udev_device_get_sysnum(event->dev) != NULL) | |
1862 | break; | |
1863 | udev_device_set_num_fake_partitions(event->dev, cur->key.num_fake_part); | |
1864 | break; | |
1865 | case TK_A_DEVLINK_PRIO: | |
1866 | udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio); | |
1867 | break; | |
1868 | case TK_A_OWNER: | |
1869 | { | |
1870 | char owner[UTIL_NAME_SIZE]; | |
1871 | ||
1872 | if (event->owner_final) | |
1873 | break; | |
1874 | if (cur->key.op == KEY_OP_ASSIGN_FINAL) | |
1875 | event->owner_final = 1; | |
1876 | util_strlcpy(owner, &rules->buf[cur->key.value_off], sizeof(owner)); | |
1877 | udev_event_apply_format(event, owner, sizeof(owner)); | |
1878 | event->uid = util_lookup_user(event->udev, owner); | |
1879 | break; | |
1880 | } | |
1881 | case TK_A_GROUP: | |
1882 | { | |
1883 | char group[UTIL_NAME_SIZE]; | |
1884 | ||
1885 | if (event->group_final) | |
1886 | break; | |
1887 | if (cur->key.op == KEY_OP_ASSIGN_FINAL) | |
1888 | event->group_final = 1; | |
40fd3bc8 | 1889 | util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group)); |
6880b25d KS |
1890 | udev_event_apply_format(event, group, sizeof(group)); |
1891 | event->gid = util_lookup_group(event->udev, group); | |
1892 | break; | |
1893 | } | |
1894 | case TK_A_MODE: | |
1895 | { | |
1896 | char mode[UTIL_NAME_SIZE]; | |
1897 | char *endptr; | |
1898 | ||
1899 | if (event->mode_final) | |
1900 | break; | |
1901 | if (cur->key.op == KEY_OP_ASSIGN_FINAL) | |
1902 | event->mode_final = 1; | |
40fd3bc8 | 1903 | util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode)); |
6880b25d KS |
1904 | udev_event_apply_format(event, mode, sizeof(mode)); |
1905 | event->mode = strtol(mode, &endptr, 8); | |
1906 | if (endptr[0] != '\0') { | |
1907 | err(event->udev, "invalide mode '%s' set default mode 0660\n", mode); | |
1908 | event->mode = 0660; | |
1909 | } | |
1910 | break; | |
1911 | } | |
1912 | case TK_A_OWNER_ID: | |
1913 | if (event->owner_final) | |
1914 | break; | |
1915 | if (cur->key.op == KEY_OP_ASSIGN_FINAL) | |
1916 | event->owner_final = 1; | |
1917 | event->uid = cur->key.uid; | |
1918 | break; | |
1919 | case TK_A_GROUP_ID: | |
1920 | if (event->group_final) | |
1921 | break; | |
1922 | if (cur->key.op == KEY_OP_ASSIGN_FINAL) | |
1923 | event->group_final = 1; | |
1924 | event->gid = cur->key.gid; | |
1925 | break; | |
1926 | case TK_A_MODE_ID: | |
1927 | if (event->mode_final) | |
1928 | break; | |
1929 | if (cur->key.op == KEY_OP_ASSIGN_FINAL) | |
1930 | event->mode_final = 1; | |
1931 | event->mode = cur->key.mode; | |
1932 | break; | |
1933 | case TK_A_ENV: | |
1934 | { | |
1935 | const char *name = &rules->buf[cur->key.attr_off]; | |
1936 | char *value = &rules->buf[cur->key.value_off]; | |
1937 | ||
1938 | if (value[0] != '\0') { | |
1939 | char temp_value[UTIL_NAME_SIZE]; | |
1940 | struct udev_list_entry *entry; | |
1941 | ||
1942 | util_strlcpy(temp_value, value, sizeof(temp_value)); | |
1943 | udev_event_apply_format(event, temp_value, sizeof(temp_value)); | |
1944 | entry = udev_device_add_property(event->dev, name, temp_value); | |
1945 | /* store in db */ | |
1946 | udev_list_entry_set_flag(entry, 1); | |
1947 | } else { | |
1948 | udev_device_add_property(event->dev, name, NULL); | |
1949 | } | |
1950 | break; | |
1951 | } | |
1952 | case TK_A_NAME: | |
1953 | { | |
1954 | const char *name = &rules->buf[cur->key.value_off]; | |
b99028c9 | 1955 | char name_str[UTIL_PATH_SIZE]; |
6880b25d KS |
1956 | int count; |
1957 | ||
1958 | if (event->name_final) | |
1959 | break; | |
1960 | if (cur->key.op == KEY_OP_ASSIGN_FINAL) | |
1961 | event->name_final = 1; | |
1962 | if (name[0] == '\0') { | |
b99028c9 KS |
1963 | free(event->name); |
1964 | event->name = NULL; | |
6880b25d KS |
1965 | break; |
1966 | } | |
b99028c9 KS |
1967 | util_strlcpy(name_str, name, sizeof(name_str)); |
1968 | udev_event_apply_format(event, name_str, sizeof(name_str)); | |
6880b25d | 1969 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { |
b99028c9 | 1970 | count = util_replace_chars(name_str, ALLOWED_CHARS_FILE); |
6880b25d KS |
1971 | if (count > 0) |
1972 | info(event->udev, "%i character(s) replaced\n", count); | |
84629ccd | 1973 | free(event->name); |
b99028c9 | 1974 | event->name = strdup(name_str); |
6880b25d KS |
1975 | } |
1976 | break; | |
1977 | } | |
1978 | case TK_A_DEVLINK: | |
1979 | { | |
1980 | char temp[UTIL_PATH_SIZE]; | |
1981 | char filename[UTIL_PATH_SIZE]; | |
1982 | char *pos, *next; | |
1983 | int count = 0; | |
1984 | ||
1985 | if (event->devlink_final) | |
1986 | break; | |
548459e9 KS |
1987 | if (major(udev_device_get_devnum(event->dev)) == 0) |
1988 | break; | |
6880b25d KS |
1989 | if (cur->key.op == KEY_OP_ASSIGN_FINAL) |
1990 | event->devlink_final = 1; | |
1991 | if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL) | |
1992 | udev_device_cleanup_devlinks_list(event->dev); | |
1993 | ||
1994 | /* allow multiple symlinks separated by spaces */ | |
1995 | util_strlcpy(temp, &rules->buf[cur->key.value_off], sizeof(temp)); | |
1996 | udev_event_apply_format(event, temp, sizeof(temp)); | |
1997 | if (esc == ESCAPE_UNSET) | |
1998 | count = util_replace_chars(temp, ALLOWED_CHARS_FILE " "); | |
1999 | else if (esc == ESCAPE_REPLACE) | |
2000 | count = util_replace_chars(temp, ALLOWED_CHARS_FILE); | |
2001 | if (count > 0) | |
2002 | info(event->udev, "%i character(s) replaced\n" , count); | |
2003 | dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp); | |
2004 | pos = temp; | |
2005 | while (isspace(pos[0])) | |
2006 | pos++; | |
2007 | next = strchr(pos, ' '); | |
2008 | while (next) { | |
2009 | next[0] = '\0'; | |
2010 | info(event->udev, "add symlink '%s'\n", pos); | |
2011 | util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename)); | |
2012 | util_strlcat(filename, "/", sizeof(filename)); | |
2013 | util_strlcat(filename, pos, sizeof(filename)); | |
2014 | udev_device_add_devlink(event->dev, filename); | |
2015 | while (isspace(next[1])) | |
2016 | next++; | |
2017 | pos = &next[1]; | |
2018 | next = strchr(pos, ' '); | |
2019 | } | |
2020 | if (pos[0] != '\0') { | |
2021 | info(event->udev, "add symlink '%s'\n", pos); | |
2022 | util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename)); | |
2023 | util_strlcat(filename, "/", sizeof(filename)); | |
2024 | util_strlcat(filename, pos, sizeof(filename)); | |
2025 | udev_device_add_devlink(event->dev, filename); | |
2026 | } | |
2027 | } | |
2028 | break; | |
2029 | case TK_A_EVENT_TIMEOUT: | |
2030 | udev_device_set_event_timeout(event->dev, cur->key.event_timeout); | |
2031 | break; | |
2032 | case TK_A_IGNORE_REMOVE: | |
2033 | udev_device_set_ignore_remove(event->dev, 1); | |
2034 | break; | |
2035 | case TK_A_ATTR: | |
2036 | { | |
2037 | const char *key_name = &rules->buf[cur->key.attr_off]; | |
2038 | char attr[UTIL_PATH_SIZE]; | |
2039 | char value[UTIL_NAME_SIZE]; | |
2040 | FILE *f; | |
2041 | ||
2042 | util_strlcpy(attr, key_name, sizeof(attr)); | |
2043 | if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) { | |
2044 | util_strlcpy(attr, udev_device_get_syspath(event->dev), sizeof(attr)); | |
2045 | util_strlcat(attr, "/", sizeof(attr)); | |
2046 | util_strlcat(attr, key_name, sizeof(attr)); | |
2047 | } | |
2048 | ||
2049 | attr_subst_subdir(attr, sizeof(attr)); | |
2050 | ||
2051 | util_strlcpy(value, &rules->buf[cur->key.value_off], sizeof(value)); | |
2052 | udev_event_apply_format(event, value, sizeof(value)); | |
2053 | info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr); | |
2054 | f = fopen(attr, "w"); | |
2055 | if (f != NULL) { | |
2056 | if (!event->test) | |
2057 | if (fprintf(f, "%s", value) <= 0) | |
2058 | err(event->udev, "error writing ATTR{%s}: %m\n", attr); | |
2059 | fclose(f); | |
2060 | } else { | |
2061 | err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr); | |
2062 | } | |
2063 | break; | |
2064 | } | |
2065 | case TK_A_RUN: | |
2066 | { | |
2067 | struct udev_list_entry *list_entry; | |
2068 | ||
2069 | if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL) | |
2070 | udev_list_cleanup_entries(event->udev, &event->run_list); | |
2071 | list_entry = udev_list_entry_add(event->udev, &event->run_list, | |
2072 | &rules->buf[cur->key.value_off], NULL, 1, 0); | |
2073 | if (cur->key.ignore_error) | |
2074 | udev_list_entry_set_flag(list_entry, 1); | |
2075 | break; | |
2076 | } | |
2077 | case TK_A_GOTO: | |
2078 | cur = &rules->tokens[cur->key.rule_goto]; | |
2079 | continue; | |
2080 | case TK_A_LAST_RULE: | |
2081 | break; | |
2082 | ||
2083 | case TK_PARENTS_MAX: | |
2084 | case TK_END: | |
2085 | case TK_UNDEF: | |
2086 | err(rules->udev, "wrong type %u\n", cur->type); | |
2087 | goto nomatch; | |
2088 | } | |
2089 | ||
2090 | cur++; | |
2091 | continue; | |
2092 | nomatch: | |
2093 | /* fast-forward to next rule */ | |
2094 | idx = rule->rule.next_rule; | |
2095 | if (idx == 0) | |
2096 | break; | |
2097 | dbg(rules->udev, "forward to rule: %u\n", idx); | |
2098 | cur = &rules->tokens[idx]; | |
2099 | } | |
2100 | return 0; | |
2101 | } |