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2232cac8 | 1 | /* |
1298001e | 2 | * Copyright (C) 2003-2012 Kay Sievers <kay@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> | |
1449a55d | 19 | #include <limits.h> |
2232cac8 | 20 | #include <stdlib.h> |
6d87ee2e | 21 | #include <stdbool.h> |
2232cac8 GKH |
22 | #include <string.h> |
23 | #include <stdio.h> | |
24 | #include <fcntl.h> | |
25 | #include <ctype.h> | |
26 | #include <unistd.h> | |
27 | #include <errno.h> | |
5ee7ecfb | 28 | #include <dirent.h> |
cea61f5c | 29 | #include <fnmatch.h> |
959e8b5d | 30 | #include <time.h> |
2232cac8 | 31 | |
2232cac8 | 32 | #include "udev.h" |
9eb977db | 33 | #include "path-util.h" |
2c21044f | 34 | #include "conf-files.h" |
915bf0f6 | 35 | #include "strbuf.h" |
84b6ad70 | 36 | #include "strv.h" |
1291bc89 | 37 | #include "util.h" |
2232cac8 | 38 | |
a1525d17 | 39 | #define PREALLOC_TOKEN 2048 |
c7521974 | 40 | |
4052400f | 41 | struct uid_gid { |
912541b0 KS |
42 | unsigned int name_off; |
43 | union { | |
a1525d17 KS |
44 | uid_t uid; |
45 | gid_t gid; | |
912541b0 | 46 | }; |
4052400f KS |
47 | }; |
48 | ||
2ad8416d ZJS |
49 | static const char* const rules_dirs[] = { |
50 | "/etc/udev/rules.d", | |
51 | "/run/udev/rules.d", | |
52 | UDEVLIBEXECDIR "/rules.d", | |
53 | NULL}; | |
54 | ||
4052400f | 55 | struct udev_rules { |
912541b0 | 56 | struct udev *udev; |
97f2d76d | 57 | usec_t dirs_ts_usec; |
912541b0 KS |
58 | int resolve_names; |
59 | ||
60 | /* every key in the rules file becomes a token */ | |
61 | struct token *tokens; | |
62 | unsigned int token_cur; | |
63 | unsigned int token_max; | |
64 | ||
ab06eef8 | 65 | /* all key strings are copied and de-duplicated in a single continuous string buffer */ |
915bf0f6 | 66 | struct strbuf *strbuf; |
912541b0 KS |
67 | |
68 | /* during rule parsing, uid/gid lookup results are cached */ | |
69 | struct uid_gid *uids; | |
70 | unsigned int uids_cur; | |
71 | unsigned int uids_max; | |
72 | struct uid_gid *gids; | |
73 | unsigned int gids_cur; | |
74 | unsigned int gids_max; | |
4052400f KS |
75 | }; |
76 | ||
915bf0f6 KS |
77 | static char *rules_str(struct udev_rules *rules, unsigned int off) { |
78 | return rules->strbuf->buf + off; | |
79 | } | |
80 | ||
81 | static unsigned int rules_add_string(struct udev_rules *rules, const char *s) { | |
82 | return strbuf_add_string(rules->strbuf, s, strlen(s)); | |
83 | } | |
84 | ||
1449a55d | 85 | /* KEY=="", KEY!="", KEY+="", KEY="", KEY:="" */ |
b0f7409f | 86 | enum operation_type { |
912541b0 | 87 | OP_UNSET, |
b0f7409f | 88 | |
912541b0 KS |
89 | OP_MATCH, |
90 | OP_NOMATCH, | |
91 | OP_MATCH_MAX, | |
b0f7409f | 92 | |
912541b0 KS |
93 | OP_ADD, |
94 | OP_ASSIGN, | |
95 | OP_ASSIGN_FINAL, | |
c7521974 KS |
96 | }; |
97 | ||
ac218d9c | 98 | enum string_glob_type { |
912541b0 | 99 | GL_UNSET, |
a1525d17 | 100 | GL_PLAIN, /* no special chars */ |
912541b0 | 101 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
102 | GL_SPLIT, /* multi-value A|B */ |
103 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
104 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
105 | }; |
106 | ||
32028733 | 107 | enum string_subst_type { |
912541b0 KS |
108 | SB_UNSET, |
109 | SB_NONE, | |
110 | SB_FORMAT, | |
111 | SB_SUBSYS, | |
32028733 KS |
112 | }; |
113 | ||
154a7b84 | 114 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 115 | enum token_type { |
912541b0 KS |
116 | TK_UNSET, |
117 | TK_RULE, | |
118 | ||
a1525d17 KS |
119 | TK_M_ACTION, /* val */ |
120 | TK_M_DEVPATH, /* val */ | |
121 | TK_M_KERNEL, /* val */ | |
122 | TK_M_DEVLINK, /* val */ | |
123 | TK_M_NAME, /* val */ | |
124 | TK_M_ENV, /* val, attr */ | |
125 | TK_M_TAG, /* val */ | |
126 | TK_M_SUBSYSTEM, /* val */ | |
127 | TK_M_DRIVER, /* val */ | |
128 | TK_M_WAITFOR, /* val */ | |
129 | TK_M_ATTR, /* val, attr */ | |
912541b0 KS |
130 | |
131 | TK_M_PARENTS_MIN, | |
a1525d17 | 132 | TK_M_KERNELS, /* val */ |
912541b0 | 133 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
134 | TK_M_DRIVERS, /* val */ |
135 | TK_M_ATTRS, /* val, attr */ | |
136 | TK_M_TAGS, /* val */ | |
912541b0 KS |
137 | TK_M_PARENTS_MAX, |
138 | ||
a1525d17 KS |
139 | TK_M_TEST, /* val, mode_t */ |
140 | TK_M_EVENT_TIMEOUT, /* int */ | |
141 | TK_M_PROGRAM, /* val */ | |
142 | TK_M_IMPORT_FILE, /* val */ | |
143 | TK_M_IMPORT_PROG, /* val */ | |
144 | TK_M_IMPORT_BUILTIN, /* val */ | |
145 | TK_M_IMPORT_DB, /* val */ | |
146 | TK_M_IMPORT_CMDLINE, /* val */ | |
147 | TK_M_IMPORT_PARENT, /* val */ | |
148 | TK_M_RESULT, /* val */ | |
912541b0 KS |
149 | TK_M_MAX, |
150 | ||
151 | TK_A_STRING_ESCAPE_NONE, | |
152 | TK_A_STRING_ESCAPE_REPLACE, | |
153 | TK_A_DB_PERSIST, | |
a1525d17 KS |
154 | TK_A_INOTIFY_WATCH, /* int */ |
155 | TK_A_DEVLINK_PRIO, /* int */ | |
156 | TK_A_OWNER, /* val */ | |
157 | TK_A_GROUP, /* val */ | |
158 | TK_A_MODE, /* val */ | |
159 | TK_A_OWNER_ID, /* uid_t */ | |
160 | TK_A_GROUP_ID, /* gid_t */ | |
161 | TK_A_MODE_ID, /* mode_t */ | |
84b6ad70 | 162 | TK_A_TAG, /* val */ |
a1525d17 | 163 | TK_A_STATIC_NODE, /* val */ |
c26547d6 | 164 | TK_A_SECLABEL, /* val, attr */ |
a1525d17 | 165 | TK_A_ENV, /* val, attr */ |
a1525d17 KS |
166 | TK_A_NAME, /* val */ |
167 | TK_A_DEVLINK, /* val */ | |
168 | TK_A_ATTR, /* val, attr */ | |
83cd6b75 KS |
169 | TK_A_RUN_BUILTIN, /* val, bool */ |
170 | TK_A_RUN_PROGRAM, /* val, bool */ | |
a1525d17 | 171 | TK_A_GOTO, /* size_t */ |
912541b0 KS |
172 | |
173 | TK_END, | |
c7521974 KS |
174 | }; |
175 | ||
3f3aa9f5 | 176 | /* we try to pack stuff in a way that we take only 12 bytes per token */ |
4052400f | 177 | struct token { |
912541b0 KS |
178 | union { |
179 | unsigned char type; /* same in rule and key */ | |
180 | struct { | |
181 | enum token_type type:8; | |
182 | bool can_set_name:1; | |
183 | bool has_static_node:1; | |
184 | unsigned int unused:6; | |
185 | unsigned short token_count; | |
186 | unsigned int label_off; | |
187 | unsigned short filename_off; | |
188 | unsigned short filename_line; | |
189 | } rule; | |
190 | struct { | |
191 | enum token_type type:8; | |
192 | enum operation_type op:8; | |
193 | enum string_glob_type glob:8; | |
194 | enum string_subst_type subst:4; | |
195 | enum string_subst_type attrsubst:4; | |
196 | unsigned int value_off; | |
197 | union { | |
198 | unsigned int attr_off; | |
912541b0 KS |
199 | unsigned int rule_goto; |
200 | mode_t mode; | |
201 | uid_t uid; | |
202 | gid_t gid; | |
203 | int devlink_prio; | |
204 | int event_timeout; | |
205 | int watch; | |
206 | enum udev_builtin_cmd builtin_cmd; | |
207 | }; | |
208 | } key; | |
209 | }; | |
4052400f KS |
210 | }; |
211 | ||
912541b0 | 212 | #define MAX_TK 64 |
4052400f | 213 | struct rule_tmp { |
912541b0 KS |
214 | struct udev_rules *rules; |
215 | struct token rule; | |
216 | struct token token[MAX_TK]; | |
217 | unsigned int token_cur; | |
4052400f KS |
218 | }; |
219 | ||
baa30fbc | 220 | #ifdef DEBUG |
5d6a1fa6 KS |
221 | static const char *operation_str(enum operation_type type) |
222 | { | |
912541b0 | 223 | static const char *operation_strs[] = { |
a1525d17 KS |
224 | [OP_UNSET] = "UNSET", |
225 | [OP_MATCH] = "match", | |
226 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
227 | [OP_MATCH_MAX] = "MATCH_MAX", |
228 | ||
a1525d17 KS |
229 | [OP_ADD] = "add", |
230 | [OP_ASSIGN] = "assign", | |
231 | [OP_ASSIGN_FINAL] = "assign-final", | |
912541b0 KS |
232 | } ; |
233 | ||
234 | return operation_strs[type]; | |
5d6a1fa6 | 235 | } |
4052400f | 236 | |
5d6a1fa6 KS |
237 | static const char *string_glob_str(enum string_glob_type type) |
238 | { | |
912541b0 | 239 | static const char *string_glob_strs[] = { |
a1525d17 KS |
240 | [GL_UNSET] = "UNSET", |
241 | [GL_PLAIN] = "plain", | |
242 | [GL_GLOB] = "glob", | |
243 | [GL_SPLIT] = "split", | |
244 | [GL_SPLIT_GLOB] = "split-glob", | |
245 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
246 | }; |
247 | ||
248 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
249 | } |
250 | ||
251 | static const char *token_str(enum token_type type) | |
252 | { | |
912541b0 | 253 | static const char *token_strs[] = { |
a1525d17 KS |
254 | [TK_UNSET] = "UNSET", |
255 | [TK_RULE] = "RULE", | |
912541b0 | 256 | |
a1525d17 | 257 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 258 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 259 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 260 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
261 | [TK_M_NAME] = "M NAME", |
262 | [TK_M_ENV] = "M ENV", | |
263 | [TK_M_TAG] = "M TAG", | |
264 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
265 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 266 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 267 | [TK_M_ATTR] = "M ATTR", |
912541b0 | 268 | |
a1525d17 | 269 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 270 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 271 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 272 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
273 | [TK_M_ATTRS] = "M ATTRS", |
274 | [TK_M_TAGS] = "M TAGS", | |
275 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 276 | |
a1525d17 KS |
277 | [TK_M_TEST] = "M TEST", |
278 | [TK_M_EVENT_TIMEOUT] = "M EVENT_TIMEOUT", | |
912541b0 | 279 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
280 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
281 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
282 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
283 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
284 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
285 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
286 | [TK_M_RESULT] = "M RESULT", | |
287 | [TK_M_MAX] = "M MAX", | |
288 | ||
289 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
290 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
291 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
292 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
293 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
294 | [TK_A_OWNER] = "A OWNER", | |
295 | [TK_A_GROUP] = "A GROUP", | |
296 | [TK_A_MODE] = "A MODE", | |
297 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
298 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
299 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 300 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 301 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
302 | [TK_A_ENV] = "A ENV", |
303 | [TK_A_TAG] = "A ENV", | |
304 | [TK_A_NAME] = "A NAME", | |
912541b0 | 305 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 306 | [TK_A_ATTR] = "A ATTR", |
83cd6b75 KS |
307 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
308 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 309 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 310 | |
a1525d17 | 311 | [TK_END] = "END", |
912541b0 KS |
312 | }; |
313 | ||
314 | return token_strs[type]; | |
5d6a1fa6 | 315 | } |
c7521974 | 316 | |
4052400f KS |
317 | static void dump_token(struct udev_rules *rules, struct token *token) |
318 | { | |
912541b0 KS |
319 | enum token_type type = token->type; |
320 | enum operation_type op = token->key.op; | |
321 | enum string_glob_type glob = token->key.glob; | |
915bf0f6 | 322 | const char *value = str(rules, token->key.value_off); |
912541b0 KS |
323 | const char *attr = &rules->buf[token->key.attr_off]; |
324 | ||
325 | switch (type) { | |
326 | case TK_RULE: | |
327 | { | |
328 | const char *tks_ptr = (char *)rules->tokens; | |
329 | const char *tk_ptr = (char *)token; | |
330 | unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token); | |
331 | ||
9f6445e3 | 332 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
baa30fbc KS |
333 | &rules->buf[token->rule.filename_off], token->rule.filename_line, |
334 | idx, token->rule.token_count, | |
335 | &rules->buf[token->rule.label_off]); | |
912541b0 KS |
336 | break; |
337 | } | |
338 | case TK_M_ACTION: | |
339 | case TK_M_DEVPATH: | |
340 | case TK_M_KERNEL: | |
341 | case TK_M_SUBSYSTEM: | |
342 | case TK_M_DRIVER: | |
343 | case TK_M_WAITFOR: | |
344 | case TK_M_DEVLINK: | |
345 | case TK_M_NAME: | |
346 | case TK_M_KERNELS: | |
347 | case TK_M_SUBSYSTEMS: | |
348 | case TK_M_DRIVERS: | |
349 | case TK_M_TAGS: | |
350 | case TK_M_PROGRAM: | |
351 | case TK_M_IMPORT_FILE: | |
352 | case TK_M_IMPORT_PROG: | |
353 | case TK_M_IMPORT_DB: | |
354 | case TK_M_IMPORT_CMDLINE: | |
355 | case TK_M_IMPORT_PARENT: | |
356 | case TK_M_RESULT: | |
357 | case TK_A_NAME: | |
358 | case TK_A_DEVLINK: | |
359 | case TK_A_OWNER: | |
360 | case TK_A_GROUP: | |
361 | case TK_A_MODE: | |
83cd6b75 KS |
362 | case TK_A_RUN_BUILTIN: |
363 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 364 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 365 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
366 | break; |
367 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 368 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
369 | break; |
370 | case TK_M_ATTR: | |
371 | case TK_M_ATTRS: | |
372 | case TK_M_ENV: | |
373 | case TK_A_ATTR: | |
374 | case TK_A_ENV: | |
9f6445e3 | 375 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 376 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
377 | break; |
378 | case TK_M_TAG: | |
379 | case TK_A_TAG: | |
9f6445e3 | 380 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
381 | break; |
382 | case TK_A_STRING_ESCAPE_NONE: | |
383 | case TK_A_STRING_ESCAPE_REPLACE: | |
384 | case TK_A_DB_PERSIST: | |
9f6445e3 | 385 | log_debug("%s", token_str(type)); |
912541b0 KS |
386 | break; |
387 | case TK_M_TEST: | |
9f6445e3 | 388 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 389 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
390 | break; |
391 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 392 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
393 | break; |
394 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 395 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
396 | break; |
397 | case TK_A_OWNER_ID: | |
9f6445e3 | 398 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
399 | break; |
400 | case TK_A_GROUP_ID: | |
9f6445e3 | 401 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
402 | break; |
403 | case TK_A_MODE_ID: | |
9f6445e3 | 404 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
405 | break; |
406 | case TK_A_STATIC_NODE: | |
9f6445e3 | 407 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 408 | break; |
c26547d6 | 409 | case TK_A_SECLABEL: |
9f6445e3 | 410 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 411 | break; |
912541b0 | 412 | case TK_M_EVENT_TIMEOUT: |
9f6445e3 | 413 | log_debug("%s %u", token_str(type), token->key.event_timeout); |
912541b0 KS |
414 | break; |
415 | case TK_A_GOTO: | |
9f6445e3 | 416 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
417 | break; |
418 | case TK_END: | |
9f6445e3 | 419 | log_debug("* %s", token_str(type)); |
912541b0 KS |
420 | break; |
421 | case TK_M_PARENTS_MIN: | |
422 | case TK_M_PARENTS_MAX: | |
423 | case TK_M_MAX: | |
424 | case TK_UNSET: | |
9f6445e3 | 425 | log_debug("unknown type %u", type); |
912541b0 KS |
426 | break; |
427 | } | |
4052400f | 428 | } |
154a7b84 | 429 | |
4052400f KS |
430 | static void dump_rules(struct udev_rules *rules) |
431 | { | |
912541b0 KS |
432 | unsigned int i; |
433 | ||
9f6445e3 | 434 | log_debug("dumping %u (%zu bytes) tokens, %u (%zu bytes) strings", |
baa30fbc KS |
435 | rules->token_cur, |
436 | rules->token_cur * sizeof(struct token), | |
437 | rules->buf_count, | |
438 | rules->buf_cur); | |
f168c273 | 439 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 440 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
441 | } |
442 | #else | |
5d6a1fa6 KS |
443 | static inline const char *operation_str(enum operation_type type) { return NULL; } |
444 | static inline const char *token_str(enum token_type type) { return NULL; } | |
4052400f KS |
445 | static inline void dump_token(struct udev_rules *rules, struct token *token) {} |
446 | static inline void dump_rules(struct udev_rules *rules) {} | |
baa30fbc | 447 | #endif /* DEBUG */ |
c7521974 | 448 | |
1449a55d AJ |
449 | static int add_token(struct udev_rules *rules, struct token *token) |
450 | { | |
912541b0 KS |
451 | /* grow buffer if needed */ |
452 | if (rules->token_cur+1 >= rules->token_max) { | |
453 | struct token *tokens; | |
454 | unsigned int add; | |
455 | ||
456 | /* double the buffer size */ | |
457 | add = rules->token_max; | |
458 | if (add < 8) | |
459 | add = 8; | |
460 | ||
461 | tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token)); | |
462 | if (tokens == NULL) | |
463 | return -1; | |
912541b0 KS |
464 | rules->tokens = tokens; |
465 | rules->token_max += add; | |
466 | } | |
467 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); | |
468 | rules->token_cur++; | |
469 | return 0; | |
c7521974 | 470 | } |
a27cd06c | 471 | |
154a7b84 KS |
472 | static uid_t add_uid(struct udev_rules *rules, const char *owner) |
473 | { | |
912541b0 KS |
474 | unsigned int i; |
475 | uid_t uid; | |
476 | unsigned int off; | |
477 | ||
478 | /* lookup, if we know it already */ | |
479 | for (i = 0; i < rules->uids_cur; i++) { | |
480 | off = rules->uids[i].name_off; | |
915bf0f6 | 481 | if (streq(rules_str(rules, off), owner)) { |
912541b0 | 482 | uid = rules->uids[i].uid; |
912541b0 KS |
483 | return uid; |
484 | } | |
485 | } | |
486 | uid = util_lookup_user(rules->udev, owner); | |
487 | ||
488 | /* grow buffer if needed */ | |
489 | if (rules->uids_cur+1 >= rules->uids_max) { | |
490 | struct uid_gid *uids; | |
491 | unsigned int add; | |
492 | ||
493 | /* double the buffer size */ | |
494 | add = rules->uids_max; | |
495 | if (add < 1) | |
496 | add = 8; | |
497 | ||
498 | uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid)); | |
499 | if (uids == NULL) | |
500 | return uid; | |
912541b0 KS |
501 | rules->uids = uids; |
502 | rules->uids_max += add; | |
503 | } | |
504 | rules->uids[rules->uids_cur].uid = uid; | |
915bf0f6 | 505 | off = rules_add_string(rules, owner); |
912541b0 KS |
506 | if (off <= 0) |
507 | return uid; | |
508 | rules->uids[rules->uids_cur].name_off = off; | |
509 | rules->uids_cur++; | |
510 | return uid; | |
154a7b84 KS |
511 | } |
512 | ||
513 | static gid_t add_gid(struct udev_rules *rules, const char *group) | |
514 | { | |
912541b0 KS |
515 | unsigned int i; |
516 | gid_t gid; | |
517 | unsigned int off; | |
518 | ||
519 | /* lookup, if we know it already */ | |
520 | for (i = 0; i < rules->gids_cur; i++) { | |
521 | off = rules->gids[i].name_off; | |
915bf0f6 | 522 | if (streq(rules_str(rules, off), group)) { |
912541b0 | 523 | gid = rules->gids[i].gid; |
912541b0 KS |
524 | return gid; |
525 | } | |
526 | } | |
527 | gid = util_lookup_group(rules->udev, group); | |
528 | ||
529 | /* grow buffer if needed */ | |
530 | if (rules->gids_cur+1 >= rules->gids_max) { | |
531 | struct uid_gid *gids; | |
532 | unsigned int add; | |
533 | ||
534 | /* double the buffer size */ | |
535 | add = rules->gids_max; | |
536 | if (add < 1) | |
537 | add = 8; | |
538 | ||
539 | gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid)); | |
540 | if (gids == NULL) | |
541 | return gid; | |
912541b0 KS |
542 | rules->gids = gids; |
543 | rules->gids_max += add; | |
544 | } | |
545 | rules->gids[rules->gids_cur].gid = gid; | |
915bf0f6 | 546 | off = rules_add_string(rules, group); |
912541b0 KS |
547 | if (off <= 0) |
548 | return gid; | |
549 | rules->gids[rules->gids_cur].name_off = off; | |
550 | rules->gids_cur++; | |
551 | return gid; | |
154a7b84 KS |
552 | } |
553 | ||
bb144ed1 | 554 | static int import_property_from_string(struct udev_device *dev, char *line) |
bd0ed2ff | 555 | { |
912541b0 KS |
556 | char *key; |
557 | char *val; | |
558 | size_t len; | |
0aa5b4d1 | 559 | struct udev_list_entry *entry; |
912541b0 KS |
560 | |
561 | /* find key */ | |
562 | key = line; | |
563 | while (isspace(key[0])) | |
564 | key++; | |
565 | ||
566 | /* comment or empty line */ | |
567 | if (key[0] == '#' || key[0] == '\0') | |
568 | return -1; | |
569 | ||
570 | /* split key/value */ | |
571 | val = strchr(key, '='); | |
572 | if (val == NULL) | |
573 | return -1; | |
574 | val[0] = '\0'; | |
575 | val++; | |
576 | ||
577 | /* find value */ | |
578 | while (isspace(val[0])) | |
579 | val++; | |
580 | ||
581 | /* terminate key */ | |
582 | len = strlen(key); | |
583 | if (len == 0) | |
584 | return -1; | |
585 | while (isspace(key[len-1])) | |
586 | len--; | |
587 | key[len] = '\0'; | |
588 | ||
589 | /* terminate value */ | |
590 | len = strlen(val); | |
591 | if (len == 0) | |
592 | return -1; | |
593 | while (isspace(val[len-1])) | |
594 | len--; | |
595 | val[len] = '\0'; | |
596 | ||
597 | if (len == 0) | |
598 | return -1; | |
599 | ||
600 | /* unquote */ | |
601 | if (val[0] == '"' || val[0] == '\'') { | |
602 | if (val[len-1] != val[0]) { | |
9f6445e3 | 603 | log_debug("inconsistent quoting: '%s', skip", line); |
912541b0 KS |
604 | return -1; |
605 | } | |
606 | val[len-1] = '\0'; | |
607 | val++; | |
608 | } | |
609 | ||
0aa5b4d1 KS |
610 | entry = udev_device_add_property(dev, key, val); |
611 | /* store in db, skip private keys */ | |
612 | if (key[0] != '.') | |
613 | udev_list_entry_set_num(entry, true); | |
614 | ||
912541b0 | 615 | return 0; |
be4bedd1 KS |
616 | } |
617 | ||
6880b25d | 618 | static int import_file_into_properties(struct udev_device *dev, const char *filename) |
be4bedd1 | 619 | { |
912541b0 KS |
620 | FILE *f; |
621 | char line[UTIL_LINE_SIZE]; | |
622 | ||
47ef94ac | 623 | f = fopen(filename, "re"); |
912541b0 KS |
624 | if (f == NULL) |
625 | return -1; | |
626 | while (fgets(line, sizeof(line), f) != NULL) | |
627 | import_property_from_string(dev, line); | |
628 | fclose(f); | |
629 | return 0; | |
bd0ed2ff KS |
630 | } |
631 | ||
2181d30a | 632 | static int import_program_into_properties(struct udev_event *event, const char *program, const sigset_t *sigmask) |
319c6700 | 633 | { |
912541b0 KS |
634 | struct udev_device *dev = event->dev; |
635 | char **envp; | |
636 | char result[UTIL_LINE_SIZE]; | |
637 | char *line; | |
638 | int err; | |
639 | ||
640 | envp = udev_device_get_properties_envp(dev); | |
641 | err = udev_event_spawn(event, program, envp, sigmask, result, sizeof(result)); | |
642 | if (err < 0) | |
643 | return err; | |
644 | ||
645 | line = result; | |
646 | while (line != NULL) { | |
647 | char *pos; | |
648 | ||
649 | pos = strchr(line, '\n'); | |
650 | if (pos != NULL) { | |
651 | pos[0] = '\0'; | |
652 | pos = &pos[1]; | |
653 | } | |
654 | import_property_from_string(dev, line); | |
655 | line = pos; | |
656 | } | |
657 | return 0; | |
319c6700 KS |
658 | } |
659 | ||
6880b25d | 660 | static int import_parent_into_properties(struct udev_device *dev, const char *filter) |
0bfb84e1 | 661 | { |
912541b0 KS |
662 | struct udev_device *dev_parent; |
663 | struct udev_list_entry *list_entry; | |
664 | ||
665 | dev_parent = udev_device_get_parent(dev); | |
666 | if (dev_parent == NULL) | |
667 | return -1; | |
668 | ||
912541b0 KS |
669 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) { |
670 | const char *key = udev_list_entry_get_name(list_entry); | |
671 | const char *val = udev_list_entry_get_value(list_entry); | |
672 | ||
673 | if (fnmatch(filter, key, 0) == 0) { | |
674 | struct udev_list_entry *entry; | |
675 | ||
912541b0 KS |
676 | entry = udev_device_add_property(dev, key, val); |
677 | /* store in db, skip private keys */ | |
678 | if (key[0] != '.') | |
679 | udev_list_entry_set_num(entry, true); | |
680 | } | |
681 | } | |
682 | return 0; | |
e2ecb34f KS |
683 | } |
684 | ||
912541b0 | 685 | #define WAIT_LOOP_PER_SECOND 50 |
6880b25d | 686 | static int wait_for_file(struct udev_device *dev, const char *file, int timeout) |
b2fe4b9a | 687 | { |
912541b0 KS |
688 | char filepath[UTIL_PATH_SIZE]; |
689 | char devicepath[UTIL_PATH_SIZE]; | |
690 | struct stat stats; | |
691 | int loop = timeout * WAIT_LOOP_PER_SECOND; | |
692 | ||
693 | /* a relative path is a device attribute */ | |
694 | devicepath[0] = '\0'; | |
695 | if (file[0] != '/') { | |
d5a89d7d KS |
696 | strscpyl(devicepath, sizeof(devicepath), udev_device_get_syspath(dev), NULL); |
697 | strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL); | |
912541b0 KS |
698 | file = filepath; |
699 | } | |
700 | ||
912541b0 KS |
701 | while (--loop) { |
702 | const struct timespec duration = { 0, 1000 * 1000 * 1000 / WAIT_LOOP_PER_SECOND }; | |
703 | ||
704 | /* lookup file */ | |
705 | if (stat(file, &stats) == 0) { | |
9f6445e3 | 706 | log_debug("file '%s' appeared after %i loops", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1); |
912541b0 KS |
707 | return 0; |
708 | } | |
709 | /* make sure, the device did not disappear in the meantime */ | |
710 | if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) { | |
9f6445e3 | 711 | log_debug("device disappeared while waiting for '%s'", file); |
912541b0 KS |
712 | return -2; |
713 | } | |
9f6445e3 | 714 | log_debug("wait for '%s' for %i mseconds", file, 1000 / WAIT_LOOP_PER_SECOND); |
912541b0 KS |
715 | nanosleep(&duration, NULL); |
716 | } | |
9f6445e3 | 717 | log_debug("waiting for '%s' failed", file); |
912541b0 | 718 | return -1; |
b2fe4b9a KS |
719 | } |
720 | ||
0ea5e96e KS |
721 | static int attr_subst_subdir(char *attr, size_t len) |
722 | { | |
912541b0 KS |
723 | bool found = false; |
724 | ||
725 | if (strstr(attr, "/*/")) { | |
726 | char *pos; | |
727 | char dirname[UTIL_PATH_SIZE]; | |
728 | const char *tail; | |
729 | DIR *dir; | |
730 | ||
d5a89d7d | 731 | strscpy(dirname, sizeof(dirname), attr); |
912541b0 KS |
732 | pos = strstr(dirname, "/*/"); |
733 | if (pos == NULL) | |
734 | return -1; | |
735 | pos[0] = '\0'; | |
736 | tail = &pos[2]; | |
737 | dir = opendir(dirname); | |
738 | if (dir != NULL) { | |
739 | struct dirent *dent; | |
740 | ||
741 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
742 | struct stat stats; | |
743 | ||
744 | if (dent->d_name[0] == '.') | |
745 | continue; | |
d5a89d7d | 746 | strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL); |
912541b0 KS |
747 | if (stat(attr, &stats) == 0) { |
748 | found = true; | |
749 | break; | |
750 | } | |
751 | } | |
752 | closedir(dir); | |
753 | } | |
754 | } | |
755 | ||
756 | return found; | |
0ea5e96e KS |
757 | } |
758 | ||
b0f7409f | 759 | static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value) |
a0e5382d | 760 | { |
912541b0 KS |
761 | char *linepos; |
762 | char *temp; | |
763 | ||
764 | linepos = *line; | |
765 | if (linepos == NULL || linepos[0] == '\0') | |
766 | return -1; | |
767 | ||
768 | /* skip whitespace */ | |
769 | while (isspace(linepos[0]) || linepos[0] == ',') | |
770 | linepos++; | |
771 | ||
772 | /* get the key */ | |
773 | if (linepos[0] == '\0') | |
774 | return -1; | |
775 | *key = linepos; | |
776 | ||
777 | for (;;) { | |
778 | linepos++; | |
779 | if (linepos[0] == '\0') | |
780 | return -1; | |
781 | if (isspace(linepos[0])) | |
782 | break; | |
783 | if (linepos[0] == '=') | |
784 | break; | |
785 | if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':')) | |
786 | if (linepos[1] == '=') | |
787 | break; | |
788 | } | |
789 | ||
790 | /* remember end of key */ | |
791 | temp = linepos; | |
792 | ||
793 | /* skip whitespace after key */ | |
794 | while (isspace(linepos[0])) | |
795 | linepos++; | |
796 | if (linepos[0] == '\0') | |
797 | return -1; | |
798 | ||
799 | /* get operation type */ | |
800 | if (linepos[0] == '=' && linepos[1] == '=') { | |
801 | *op = OP_MATCH; | |
802 | linepos += 2; | |
803 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
804 | *op = OP_NOMATCH; | |
805 | linepos += 2; | |
806 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
807 | *op = OP_ADD; | |
808 | linepos += 2; | |
809 | } else if (linepos[0] == '=') { | |
810 | *op = OP_ASSIGN; | |
811 | linepos++; | |
812 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
813 | *op = OP_ASSIGN_FINAL; | |
814 | linepos += 2; | |
815 | } else | |
816 | return -1; | |
817 | ||
818 | /* terminate key */ | |
819 | temp[0] = '\0'; | |
820 | ||
821 | /* skip whitespace after operator */ | |
822 | while (isspace(linepos[0])) | |
823 | linepos++; | |
824 | if (linepos[0] == '\0') | |
825 | return -1; | |
826 | ||
827 | /* get the value */ | |
828 | if (linepos[0] == '"') | |
829 | linepos++; | |
830 | else | |
831 | return -1; | |
832 | *value = linepos; | |
833 | ||
834 | /* terminate */ | |
835 | temp = strchr(linepos, '"'); | |
836 | if (!temp) | |
837 | return -1; | |
838 | temp[0] = '\0'; | |
839 | temp++; | |
912541b0 KS |
840 | |
841 | /* move line to next key */ | |
842 | *line = temp; | |
843 | return 0; | |
6880b25d | 844 | } |
95776dc6 | 845 | |
6880b25d | 846 | /* extract possible KEY{attr} */ |
04a9d3a0 | 847 | static const char *get_key_attribute(struct udev *udev, char *str) |
6880b25d | 848 | { |
912541b0 KS |
849 | char *pos; |
850 | char *attr; | |
851 | ||
852 | attr = strchr(str, '{'); | |
853 | if (attr != NULL) { | |
854 | attr++; | |
855 | pos = strchr(attr, '}'); | |
856 | if (pos == NULL) { | |
9f6445e3 | 857 | log_error("missing closing brace for format"); |
912541b0 KS |
858 | return NULL; |
859 | } | |
860 | pos[0] = '\0'; | |
912541b0 KS |
861 | return attr; |
862 | } | |
863 | return NULL; | |
6880b25d | 864 | } |
95776dc6 | 865 | |
0ef254d5 | 866 | static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
912541b0 KS |
867 | enum operation_type op, |
868 | const char *value, const void *data) | |
6880b25d | 869 | { |
912541b0 KS |
870 | struct token *token = &rule_tmp->token[rule_tmp->token_cur]; |
871 | const char *attr = NULL; | |
872 | ||
29804cc1 | 873 | memzero(token, sizeof(struct token)); |
912541b0 KS |
874 | |
875 | switch (type) { | |
876 | case TK_M_ACTION: | |
877 | case TK_M_DEVPATH: | |
878 | case TK_M_KERNEL: | |
879 | case TK_M_SUBSYSTEM: | |
880 | case TK_M_DRIVER: | |
881 | case TK_M_WAITFOR: | |
882 | case TK_M_DEVLINK: | |
883 | case TK_M_NAME: | |
884 | case TK_M_KERNELS: | |
885 | case TK_M_SUBSYSTEMS: | |
886 | case TK_M_DRIVERS: | |
887 | case TK_M_TAGS: | |
888 | case TK_M_PROGRAM: | |
889 | case TK_M_IMPORT_FILE: | |
890 | case TK_M_IMPORT_PROG: | |
891 | case TK_M_IMPORT_DB: | |
892 | case TK_M_IMPORT_CMDLINE: | |
893 | case TK_M_IMPORT_PARENT: | |
894 | case TK_M_RESULT: | |
895 | case TK_A_OWNER: | |
896 | case TK_A_GROUP: | |
897 | case TK_A_MODE: | |
8a173387 | 898 | case TK_A_DEVLINK: |
912541b0 KS |
899 | case TK_A_NAME: |
900 | case TK_A_GOTO: | |
901 | case TK_M_TAG: | |
902 | case TK_A_TAG: | |
d6f116a7 | 903 | case TK_A_STATIC_NODE: |
915bf0f6 | 904 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
905 | break; |
906 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 907 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
908 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
909 | break; | |
910 | case TK_M_ENV: | |
911 | case TK_M_ATTR: | |
912 | case TK_M_ATTRS: | |
913 | case TK_A_ATTR: | |
914 | case TK_A_ENV: | |
c26547d6 | 915 | case TK_A_SECLABEL: |
912541b0 | 916 | attr = data; |
915bf0f6 KS |
917 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
918 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 919 | break; |
912541b0 | 920 | case TK_M_TEST: |
915bf0f6 | 921 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
922 | if (data != NULL) |
923 | token->key.mode = *(mode_t *)data; | |
924 | break; | |
925 | case TK_A_STRING_ESCAPE_NONE: | |
926 | case TK_A_STRING_ESCAPE_REPLACE: | |
927 | case TK_A_DB_PERSIST: | |
928 | break; | |
83cd6b75 | 929 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 930 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 931 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 932 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
933 | break; |
934 | case TK_A_INOTIFY_WATCH: | |
935 | case TK_A_DEVLINK_PRIO: | |
936 | token->key.devlink_prio = *(int *)data; | |
937 | break; | |
938 | case TK_A_OWNER_ID: | |
939 | token->key.uid = *(uid_t *)data; | |
940 | break; | |
941 | case TK_A_GROUP_ID: | |
942 | token->key.gid = *(gid_t *)data; | |
943 | break; | |
944 | case TK_A_MODE_ID: | |
945 | token->key.mode = *(mode_t *)data; | |
946 | break; | |
912541b0 KS |
947 | case TK_M_EVENT_TIMEOUT: |
948 | token->key.event_timeout = *(int *)data; | |
949 | break; | |
950 | case TK_RULE: | |
951 | case TK_M_PARENTS_MIN: | |
952 | case TK_M_PARENTS_MAX: | |
953 | case TK_M_MAX: | |
954 | case TK_END: | |
955 | case TK_UNSET: | |
9f6445e3 | 956 | log_error("wrong type %u", type); |
912541b0 KS |
957 | return -1; |
958 | } | |
959 | ||
960 | if (value != NULL && type < TK_M_MAX) { | |
961 | /* check if we need to split or call fnmatch() while matching rules */ | |
962 | enum string_glob_type glob; | |
963 | int has_split; | |
964 | int has_glob; | |
965 | ||
966 | has_split = (strchr(value, '|') != NULL); | |
e3e0314b | 967 | has_glob = string_is_glob(value); |
912541b0 KS |
968 | if (has_split && has_glob) { |
969 | glob = GL_SPLIT_GLOB; | |
970 | } else if (has_split) { | |
971 | glob = GL_SPLIT; | |
972 | } else if (has_glob) { | |
33502ffe | 973 | if (streq(value, "?*")) |
912541b0 KS |
974 | glob = GL_SOMETHING; |
975 | else | |
976 | glob = GL_GLOB; | |
977 | } else { | |
978 | glob = GL_PLAIN; | |
979 | } | |
980 | token->key.glob = glob; | |
981 | } | |
982 | ||
983 | if (value != NULL && type > TK_M_MAX) { | |
984 | /* check if assigned value has substitution chars */ | |
985 | if (value[0] == '[') | |
986 | token->key.subst = SB_SUBSYS; | |
987 | else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) | |
988 | token->key.subst = SB_FORMAT; | |
989 | else | |
990 | token->key.subst = SB_NONE; | |
991 | } | |
992 | ||
993 | if (attr != NULL) { | |
d6f116a7 | 994 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
995 | if (attr[0] == '[') |
996 | token->key.attrsubst = SB_SUBSYS; | |
997 | else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL) | |
998 | token->key.attrsubst = SB_FORMAT; | |
999 | else | |
1000 | token->key.attrsubst = SB_NONE; | |
1001 | } | |
1002 | ||
1003 | token->key.type = type; | |
1004 | token->key.op = op; | |
1005 | rule_tmp->token_cur++; | |
8fef0ff2 | 1006 | if (rule_tmp->token_cur >= ELEMENTSOF(rule_tmp->token)) { |
9f6445e3 | 1007 | log_error("temporary rule array too small"); |
912541b0 KS |
1008 | return -1; |
1009 | } | |
1010 | return 0; | |
6880b25d | 1011 | } |
e57e7bc1 | 1012 | |
6880b25d KS |
1013 | static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) |
1014 | { | |
912541b0 KS |
1015 | unsigned int i; |
1016 | unsigned int start = 0; | |
1017 | unsigned int end = rule_tmp->token_cur; | |
1018 | ||
1019 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
1020 | enum token_type next_val = TK_UNSET; | |
1021 | unsigned int next_idx = 0; | |
1022 | unsigned int j; | |
1023 | ||
1024 | /* find smallest value */ | |
1025 | for (j = start; j < end; j++) { | |
1026 | if (rule_tmp->token[j].type == TK_UNSET) | |
1027 | continue; | |
1028 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
1029 | next_val = rule_tmp->token[j].type; | |
1030 | next_idx = j; | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | /* add token and mark done */ | |
1035 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
1036 | return -1; | |
1037 | rule_tmp->token[next_idx].type = TK_UNSET; | |
1038 | ||
1039 | /* shrink range */ | |
1040 | if (next_idx == start) | |
1041 | start++; | |
1042 | if (next_idx+1 == end) | |
1043 | end--; | |
1044 | } | |
1045 | return 0; | |
724257d9 GKH |
1046 | } |
1047 | ||
6880b25d | 1048 | static int add_rule(struct udev_rules *rules, char *line, |
912541b0 | 1049 | const char *filename, unsigned int filename_off, unsigned int lineno) |
724257d9 | 1050 | { |
912541b0 | 1051 | char *linepos; |
04a9d3a0 | 1052 | const char *attr; |
912541b0 KS |
1053 | struct rule_tmp rule_tmp; |
1054 | ||
29804cc1 | 1055 | memzero(&rule_tmp, sizeof(struct rule_tmp)); |
912541b0 KS |
1056 | rule_tmp.rules = rules; |
1057 | rule_tmp.rule.type = TK_RULE; | |
775f8b3c KS |
1058 | /* the offset in the rule is limited to unsigned short */ |
1059 | if (filename_off < USHRT_MAX) | |
1060 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
1061 | rule_tmp.rule.rule.filename_line = lineno; |
1062 | ||
1063 | linepos = line; | |
1064 | for (;;) { | |
1065 | char *key; | |
1066 | char *value; | |
1067 | enum operation_type op; | |
1068 | ||
e736cf35 | 1069 | if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) { |
3cf0f8f7 DR |
1070 | /* Avoid erroring on trailing whitespace. This is probably rare |
1071 | * so save the work for the error case instead of always trying | |
1072 | * to strip the trailing whitespace with strstrip(). */ | |
1073 | while (isblank(*linepos)) | |
1074 | linepos++; | |
1075 | ||
e736cf35 DR |
1076 | /* If we aren't at the end of the line, this is a parsing error. |
1077 | * Make a best effort to describe where the problem is. */ | |
1291bc89 ZJS |
1078 | if (*linepos != '\n') { |
1079 | char buf[2] = {linepos[1]}; | |
1080 | _cleanup_free_ char *tmp; | |
1081 | ||
1082 | tmp = cescape(buf); | |
e736cf35 | 1083 | log_error("invalid key/value pair in file %s on line %u," |
7c902b14 | 1084 | "starting at character %tu ('%s')\n", |
1291bc89 ZJS |
1085 | filename, lineno, linepos - line + 1, tmp); |
1086 | if (linepos[1] == '#') | |
75716dd8 | 1087 | log_error("hint: comments can only start at beginning of line"); |
1291bc89 | 1088 | } |
912541b0 | 1089 | break; |
e736cf35 | 1090 | } |
912541b0 | 1091 | |
33502ffe | 1092 | if (streq(key, "ACTION")) { |
912541b0 | 1093 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1094 | log_error("invalid ACTION operation"); |
912541b0 KS |
1095 | goto invalid; |
1096 | } | |
1097 | rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); | |
1098 | continue; | |
1099 | } | |
1100 | ||
33502ffe | 1101 | if (streq(key, "DEVPATH")) { |
912541b0 | 1102 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1103 | log_error("invalid DEVPATH operation"); |
912541b0 KS |
1104 | goto invalid; |
1105 | } | |
1106 | rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); | |
1107 | continue; | |
1108 | } | |
1109 | ||
33502ffe | 1110 | if (streq(key, "KERNEL")) { |
912541b0 | 1111 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1112 | log_error("invalid KERNEL operation"); |
912541b0 KS |
1113 | goto invalid; |
1114 | } | |
1115 | rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); | |
1116 | continue; | |
1117 | } | |
1118 | ||
33502ffe | 1119 | if (streq(key, "SUBSYSTEM")) { |
912541b0 | 1120 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1121 | log_error("invalid SUBSYSTEM operation"); |
912541b0 KS |
1122 | goto invalid; |
1123 | } | |
1124 | /* bus, class, subsystem events should all be the same */ | |
33502ffe KS |
1125 | if (streq(value, "subsystem") || |
1126 | streq(value, "bus") || | |
1127 | streq(value, "class")) { | |
1128 | if (streq(value, "bus") || streq(value, "class")) | |
9f6445e3 | 1129 | log_error("'%s' must be specified as 'subsystem' " |
912541b0 KS |
1130 | "please fix it in %s:%u", value, filename, lineno); |
1131 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); | |
1132 | } else | |
1133 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); | |
1134 | continue; | |
1135 | } | |
1136 | ||
33502ffe | 1137 | if (streq(key, "DRIVER")) { |
912541b0 | 1138 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1139 | log_error("invalid DRIVER operation"); |
912541b0 KS |
1140 | goto invalid; |
1141 | } | |
1142 | rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); | |
1143 | continue; | |
1144 | } | |
1145 | ||
33502ffe | 1146 | if (startswith(key, "ATTR{")) { |
912541b0 KS |
1147 | attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1); |
1148 | if (attr == NULL) { | |
9f6445e3 | 1149 | log_error("error parsing ATTR attribute"); |
912541b0 KS |
1150 | goto invalid; |
1151 | } | |
1152 | if (op < OP_MATCH_MAX) { | |
1153 | rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); | |
1154 | } else { | |
1155 | rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); | |
1156 | } | |
1157 | continue; | |
1158 | } | |
1159 | ||
c26547d6 KS |
1160 | if (startswith(key, "SECLABEL{")) { |
1161 | attr = get_key_attribute(rules->udev, key + sizeof("SECLABEL")-1); | |
1162 | if (!attr) { | |
9f6445e3 | 1163 | log_error("error parsing SECLABEL attribute"); |
c26547d6 KS |
1164 | goto invalid; |
1165 | } | |
1166 | ||
1167 | rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr); | |
1168 | continue; | |
1169 | } | |
1170 | ||
33502ffe | 1171 | if (streq(key, "KERNELS")) { |
912541b0 | 1172 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1173 | log_error("invalid KERNELS operation"); |
912541b0 KS |
1174 | goto invalid; |
1175 | } | |
1176 | rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); | |
1177 | continue; | |
1178 | } | |
1179 | ||
33502ffe | 1180 | if (streq(key, "SUBSYSTEMS")) { |
912541b0 | 1181 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1182 | log_error("invalid SUBSYSTEMS operation"); |
912541b0 KS |
1183 | goto invalid; |
1184 | } | |
1185 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); | |
1186 | continue; | |
1187 | } | |
1188 | ||
33502ffe | 1189 | if (streq(key, "DRIVERS")) { |
912541b0 | 1190 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1191 | log_error("invalid DRIVERS operation"); |
912541b0 KS |
1192 | goto invalid; |
1193 | } | |
1194 | rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); | |
1195 | continue; | |
1196 | } | |
1197 | ||
33502ffe | 1198 | if (startswith(key, "ATTRS{")) { |
912541b0 | 1199 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1200 | log_error("invalid ATTRS operation"); |
912541b0 KS |
1201 | goto invalid; |
1202 | } | |
1203 | attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1); | |
1204 | if (attr == NULL) { | |
9f6445e3 | 1205 | log_error("error parsing ATTRS attribute"); |
912541b0 KS |
1206 | goto invalid; |
1207 | } | |
33502ffe | 1208 | if (startswith(attr, "device/")) |
baa30fbc | 1209 | log_error("the 'device' link may not be available in a future kernel, " |
912541b0 KS |
1210 | "please fix it in %s:%u", filename, lineno); |
1211 | else if (strstr(attr, "../") != NULL) | |
baa30fbc | 1212 | log_error("do not reference parent sysfs directories directly, " |
912541b0 KS |
1213 | "it may break with a future kernel, please fix it in %s:%u", filename, lineno); |
1214 | rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); | |
1215 | continue; | |
1216 | } | |
1217 | ||
33502ffe | 1218 | if (streq(key, "TAGS")) { |
912541b0 | 1219 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1220 | log_error("invalid TAGS operation"); |
912541b0 KS |
1221 | goto invalid; |
1222 | } | |
1223 | rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL); | |
1224 | continue; | |
1225 | } | |
1226 | ||
33502ffe | 1227 | if (startswith(key, "ENV{")) { |
912541b0 KS |
1228 | attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1); |
1229 | if (attr == NULL) { | |
9f6445e3 | 1230 | log_error("error parsing ENV attribute"); |
912541b0 KS |
1231 | goto invalid; |
1232 | } | |
1233 | if (op < OP_MATCH_MAX) { | |
1234 | if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0) | |
1235 | goto invalid; | |
1236 | } else { | |
1237 | static const char *blacklist[] = { | |
1238 | "ACTION", | |
1239 | "SUBSYSTEM", | |
1240 | "DEVTYPE", | |
1241 | "MAJOR", | |
1242 | "MINOR", | |
1243 | "DRIVER", | |
1244 | "IFINDEX", | |
1245 | "DEVNAME", | |
1246 | "DEVLINKS", | |
1247 | "DEVPATH", | |
1248 | "TAGS", | |
1249 | }; | |
1250 | unsigned int i; | |
1251 | ||
395ea978 KS |
1252 | for (i = 0; i < ELEMENTSOF(blacklist); i++) { |
1253 | if (!streq(attr, blacklist[i])) | |
912541b0 | 1254 | continue; |
9f6445e3 | 1255 | log_error("invalid ENV attribute, '%s' can not be set %s:%u", attr, filename, lineno); |
395ea978 KS |
1256 | goto invalid; |
1257 | } | |
912541b0 KS |
1258 | if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0) |
1259 | goto invalid; | |
1260 | } | |
1261 | continue; | |
1262 | } | |
1263 | ||
33502ffe | 1264 | if (streq(key, "TAG")) { |
912541b0 KS |
1265 | if (op < OP_MATCH_MAX) |
1266 | rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); | |
1267 | else | |
1268 | rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); | |
1269 | continue; | |
1270 | } | |
1271 | ||
33502ffe | 1272 | if (streq(key, "PROGRAM")) { |
912541b0 KS |
1273 | rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
1274 | continue; | |
1275 | } | |
1276 | ||
33502ffe | 1277 | if (streq(key, "RESULT")) { |
912541b0 | 1278 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1279 | log_error("invalid RESULT operation"); |
912541b0 KS |
1280 | goto invalid; |
1281 | } | |
1282 | rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); | |
1283 | continue; | |
1284 | } | |
1285 | ||
33502ffe | 1286 | if (startswith(key, "IMPORT")) { |
912541b0 KS |
1287 | attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1); |
1288 | if (attr == NULL) { | |
9f6445e3 | 1289 | log_error("IMPORT{} type missing, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1290 | continue; |
1291 | } | |
33502ffe | 1292 | if (streq(attr, "program")) { |
912541b0 KS |
1293 | /* find known built-in command */ |
1294 | if (value[0] != '/') { | |
1295 | enum udev_builtin_cmd cmd; | |
1296 | ||
1297 | cmd = udev_builtin_lookup(value); | |
1298 | if (cmd < UDEV_BUILTIN_MAX) { | |
9f6445e3 | 1299 | log_debug("IMPORT found builtin '%s', replacing %s:%u", |
baa30fbc | 1300 | value, filename, lineno); |
912541b0 KS |
1301 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1302 | continue; | |
1303 | } | |
1304 | } | |
912541b0 | 1305 | rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1306 | } else if (streq(attr, "builtin")) { |
912541b0 KS |
1307 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1308 | ||
912541b0 KS |
1309 | if (cmd < UDEV_BUILTIN_MAX) |
1310 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); | |
1311 | else | |
9f6445e3 | 1312 | log_error("IMPORT{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1313 | } else if (streq(attr, "file")) { |
912541b0 | 1314 | rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
33502ffe | 1315 | } else if (streq(attr, "db")) { |
912541b0 | 1316 | rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
33502ffe | 1317 | } else if (streq(attr, "cmdline")) { |
912541b0 | 1318 | rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
33502ffe | 1319 | } else if (streq(attr, "parent")) { |
912541b0 | 1320 | rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
83cd6b75 | 1321 | } else |
9f6445e3 | 1322 | log_error("IMPORT{} unknown type, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1323 | continue; |
1324 | } | |
1325 | ||
33502ffe | 1326 | if (startswith(key, "TEST")) { |
912541b0 KS |
1327 | mode_t mode = 0; |
1328 | ||
1329 | if (op > OP_MATCH_MAX) { | |
9f6445e3 | 1330 | log_error("invalid TEST operation"); |
912541b0 KS |
1331 | goto invalid; |
1332 | } | |
1333 | attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1); | |
1334 | if (attr != NULL) { | |
1335 | mode = strtol(attr, NULL, 8); | |
1336 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); | |
1337 | } else { | |
1338 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); | |
1339 | } | |
1340 | continue; | |
1341 | } | |
1342 | ||
33502ffe | 1343 | if (startswith(key, "RUN")) { |
83cd6b75 KS |
1344 | attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1); |
1345 | if (attr == NULL) | |
1346 | attr = "program"; | |
1347 | ||
33502ffe | 1348 | if (streq(attr, "builtin")) { |
83cd6b75 KS |
1349 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1350 | ||
1351 | if (cmd < UDEV_BUILTIN_MAX) | |
1352 | rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
1353 | else | |
9f6445e3 | 1354 | log_error("IMPORT{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1355 | } else if (streq(attr, "program")) { |
83cd6b75 KS |
1356 | enum udev_builtin_cmd cmd = UDEV_BUILTIN_MAX; |
1357 | ||
83cd6b75 KS |
1358 | rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
1359 | } else { | |
9f6445e3 | 1360 | log_error("RUN{} unknown type, ignoring RUN %s:%u", filename, lineno); |
83cd6b75 KS |
1361 | } |
1362 | ||
912541b0 KS |
1363 | continue; |
1364 | } | |
1365 | ||
33502ffe | 1366 | if (streq(key, "WAIT_FOR") || streq(key, "WAIT_FOR_SYSFS")) { |
912541b0 KS |
1367 | rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL); |
1368 | continue; | |
1369 | } | |
1370 | ||
33502ffe | 1371 | if (streq(key, "LABEL")) { |
915bf0f6 | 1372 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 KS |
1373 | continue; |
1374 | } | |
1375 | ||
33502ffe | 1376 | if (streq(key, "GOTO")) { |
912541b0 KS |
1377 | rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
1378 | continue; | |
1379 | } | |
1380 | ||
33502ffe | 1381 | if (startswith(key, "NAME")) { |
912541b0 KS |
1382 | if (op < OP_MATCH_MAX) { |
1383 | rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); | |
1384 | } else { | |
33502ffe | 1385 | if (streq(value, "%k")) { |
baa30fbc | 1386 | log_error("NAME=\"%%k\" is ignored, because it breaks kernel supplied names, " |
912541b0 KS |
1387 | "please remove it from %s:%u\n", filename, lineno); |
1388 | continue; | |
1389 | } | |
1390 | if (value[0] == '\0') { | |
baa30fbc KS |
1391 | log_debug("NAME=\"\" is ignored, because udev will not delete any device nodes, " |
1392 | "please remove it from %s:%u\n", filename, lineno); | |
912541b0 KS |
1393 | continue; |
1394 | } | |
1395 | rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1396 | } | |
1397 | rule_tmp.rule.rule.can_set_name = true; | |
1398 | continue; | |
1399 | } | |
1400 | ||
8a173387 KS |
1401 | if (streq(key, "SYMLINK")) { |
1402 | if (op < OP_MATCH_MAX) | |
912541b0 | 1403 | rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 KS |
1404 | else |
1405 | rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
912541b0 KS |
1406 | rule_tmp.rule.rule.can_set_name = true; |
1407 | continue; | |
1408 | } | |
1409 | ||
33502ffe | 1410 | if (streq(key, "OWNER")) { |
912541b0 KS |
1411 | uid_t uid; |
1412 | char *endptr; | |
1413 | ||
1414 | uid = strtoul(value, &endptr, 10); | |
1415 | if (endptr[0] == '\0') { | |
1416 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1417 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1418 | uid = add_uid(rules, value); | |
1419 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1420 | } else if (rules->resolve_names >= 0) { | |
1421 | rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); | |
1422 | } | |
1423 | rule_tmp.rule.rule.can_set_name = true; | |
1424 | continue; | |
1425 | } | |
1426 | ||
33502ffe | 1427 | if (streq(key, "GROUP")) { |
912541b0 KS |
1428 | gid_t gid; |
1429 | char *endptr; | |
1430 | ||
1431 | gid = strtoul(value, &endptr, 10); | |
1432 | if (endptr[0] == '\0') { | |
1433 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1434 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1435 | gid = add_gid(rules, value); | |
1436 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1437 | } else if (rules->resolve_names >= 0) { | |
1438 | rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); | |
1439 | } | |
1440 | rule_tmp.rule.rule.can_set_name = true; | |
1441 | continue; | |
1442 | } | |
1443 | ||
33502ffe | 1444 | if (streq(key, "MODE")) { |
912541b0 KS |
1445 | mode_t mode; |
1446 | char *endptr; | |
1447 | ||
1448 | mode = strtol(value, &endptr, 8); | |
1449 | if (endptr[0] == '\0') | |
1450 | rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1451 | else | |
1452 | rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); | |
1453 | rule_tmp.rule.rule.can_set_name = true; | |
1454 | continue; | |
1455 | } | |
1456 | ||
33502ffe | 1457 | if (streq(key, "OPTIONS")) { |
912541b0 KS |
1458 | const char *pos; |
1459 | ||
1460 | pos = strstr(value, "link_priority="); | |
1461 | if (pos != NULL) { | |
1462 | int prio = atoi(&pos[strlen("link_priority=")]); | |
1463 | ||
1464 | rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); | |
912541b0 KS |
1465 | } |
1466 | ||
1467 | pos = strstr(value, "event_timeout="); | |
1468 | if (pos != NULL) { | |
1469 | int tout = atoi(&pos[strlen("event_timeout=")]); | |
1470 | ||
1471 | rule_add_key(&rule_tmp, TK_M_EVENT_TIMEOUT, op, NULL, &tout); | |
912541b0 KS |
1472 | } |
1473 | ||
1474 | pos = strstr(value, "string_escape="); | |
1475 | if (pos != NULL) { | |
1476 | pos = &pos[strlen("string_escape=")]; | |
33502ffe | 1477 | if (startswith(pos, "none")) |
912541b0 | 1478 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1479 | else if (startswith(pos, "replace")) |
912541b0 KS |
1480 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1481 | } | |
1482 | ||
1483 | pos = strstr(value, "db_persist"); | |
1484 | if (pos != NULL) | |
1485 | rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); | |
1486 | ||
1487 | pos = strstr(value, "nowatch"); | |
1488 | if (pos != NULL) { | |
1489 | const int off = 0; | |
1490 | ||
1491 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off); | |
912541b0 KS |
1492 | } else { |
1493 | pos = strstr(value, "watch"); | |
1494 | if (pos != NULL) { | |
1495 | const int on = 1; | |
1496 | ||
1497 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on); | |
912541b0 KS |
1498 | } |
1499 | } | |
1500 | ||
1501 | pos = strstr(value, "static_node="); | |
1502 | if (pos != NULL) { | |
1503 | rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL); | |
1504 | rule_tmp.rule.rule.has_static_node = true; | |
1505 | } | |
1506 | ||
1507 | continue; | |
1508 | } | |
1509 | ||
9f6445e3 | 1510 | log_error("unknown key '%s' in %s:%u", key, filename, lineno); |
912541b0 KS |
1511 | goto invalid; |
1512 | } | |
1513 | ||
1514 | /* add rule token */ | |
1515 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; | |
1516 | if (add_token(rules, &rule_tmp.rule) != 0) | |
1517 | goto invalid; | |
1518 | ||
1519 | /* add tokens to list, sorted by type */ | |
1520 | if (sort_token(rules, &rule_tmp) != 0) | |
1521 | goto invalid; | |
1522 | ||
1523 | return 0; | |
c7521974 | 1524 | invalid: |
9f6445e3 | 1525 | log_error("invalid rule '%s:%u'", filename, lineno); |
912541b0 | 1526 | return -1; |
c7521974 KS |
1527 | } |
1528 | ||
775f8b3c | 1529 | static int parse_file(struct udev_rules *rules, const char *filename) |
c7521974 | 1530 | { |
912541b0 KS |
1531 | FILE *f; |
1532 | unsigned int first_token; | |
775f8b3c | 1533 | unsigned int filename_off; |
912541b0 KS |
1534 | char line[UTIL_LINE_SIZE]; |
1535 | int line_nr = 0; | |
1536 | unsigned int i; | |
1537 | ||
775f8b3c | 1538 | if (null_or_empty_path(filename)) { |
9f6445e3 | 1539 | log_debug("skip empty file: %s", filename); |
775f8b3c KS |
1540 | return 0; |
1541 | } | |
9f6445e3 | 1542 | log_debug("read rules file: %s", filename); |
912541b0 | 1543 | |
47ef94ac | 1544 | f = fopen(filename, "re"); |
912541b0 KS |
1545 | if (f == NULL) |
1546 | return -1; | |
1547 | ||
1548 | first_token = rules->token_cur; | |
915bf0f6 | 1549 | filename_off = rules_add_string(rules, filename); |
912541b0 KS |
1550 | |
1551 | while (fgets(line, sizeof(line), f) != NULL) { | |
1552 | char *key; | |
1553 | size_t len; | |
1554 | ||
1555 | /* skip whitespace */ | |
1556 | line_nr++; | |
1557 | key = line; | |
1558 | while (isspace(key[0])) | |
1559 | key++; | |
1560 | ||
1561 | /* comment */ | |
1562 | if (key[0] == '#') | |
1563 | continue; | |
1564 | ||
1565 | len = strlen(line); | |
1566 | if (len < 3) | |
1567 | continue; | |
1568 | ||
1569 | /* continue reading if backslash+newline is found */ | |
1570 | while (line[len-2] == '\\') { | |
1571 | if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) | |
1572 | break; | |
1573 | if (strlen(&line[len-2]) < 2) | |
1574 | break; | |
1575 | line_nr++; | |
1576 | len = strlen(line); | |
1577 | } | |
1578 | ||
1579 | if (len+1 >= sizeof(line)) { | |
9f6445e3 | 1580 | log_error("line too long '%s':%u, ignored", filename, line_nr); |
912541b0 KS |
1581 | continue; |
1582 | } | |
1583 | add_rule(rules, key, filename, filename_off, line_nr); | |
1584 | } | |
1585 | fclose(f); | |
1586 | ||
1587 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1588 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1589 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1590 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
912541b0 KS |
1591 | unsigned int j; |
1592 | ||
1593 | for (j = i+1; j < rules->token_cur; j++) { | |
1594 | if (rules->tokens[j].type != TK_RULE) | |
1595 | continue; | |
1596 | if (rules->tokens[j].rule.label_off == 0) | |
1597 | continue; | |
915bf0f6 | 1598 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1599 | continue; |
1600 | rules->tokens[i].key.rule_goto = j; | |
1601 | break; | |
1602 | } | |
1603 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1604 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1605 | } |
1606 | } | |
1607 | return 0; | |
c7521974 KS |
1608 | } |
1609 | ||
d7ddce18 | 1610 | struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) |
c7521974 | 1611 | { |
912541b0 KS |
1612 | struct udev_rules *rules; |
1613 | struct udev_list file_list; | |
912541b0 | 1614 | struct token end_token; |
775f8b3c KS |
1615 | char **files, **f; |
1616 | int r; | |
912541b0 KS |
1617 | |
1618 | rules = calloc(1, sizeof(struct udev_rules)); | |
1619 | if (rules == NULL) | |
1620 | return NULL; | |
1621 | rules->udev = udev; | |
1622 | rules->resolve_names = resolve_names; | |
1623 | udev_list_init(udev, &file_list, true); | |
1624 | ||
1625 | /* init token array and string buffer */ | |
1626 | rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); | |
0820a4f0 VP |
1627 | if (rules->tokens == NULL) |
1628 | return udev_rules_unref(rules); | |
912541b0 KS |
1629 | rules->token_max = PREALLOC_TOKEN; |
1630 | ||
915bf0f6 KS |
1631 | rules->strbuf = strbuf_new(); |
1632 | if (!rules->strbuf) | |
0820a4f0 VP |
1633 | return udev_rules_unref(rules); |
1634 | ||
3b8c1cb0 KS |
1635 | udev_rules_check_timestamp(rules); |
1636 | ||
2ad8416d | 1637 | r = conf_files_list_strv(&files, ".rules", NULL, rules_dirs); |
775f8b3c | 1638 | if (r < 0) { |
9f6445e3 | 1639 | log_error("failed to enumerate rules files: %s", strerror(-r)); |
0820a4f0 | 1640 | return udev_rules_unref(rules); |
912541b0 KS |
1641 | } |
1642 | ||
775f8b3c KS |
1643 | /* |
1644 | * The offset value in the rules strct is limited; add all | |
1645 | * rules file names to the beginning of the string buffer. | |
1646 | */ | |
1647 | STRV_FOREACH(f, files) | |
915bf0f6 | 1648 | rules_add_string(rules, *f); |
912541b0 | 1649 | |
775f8b3c KS |
1650 | STRV_FOREACH(f, files) |
1651 | parse_file(rules, *f); | |
1652 | ||
1653 | strv_free(files); | |
912541b0 | 1654 | |
29804cc1 | 1655 | memzero(&end_token, sizeof(struct token)); |
912541b0 KS |
1656 | end_token.type = TK_END; |
1657 | add_token(rules, &end_token); | |
9f6445e3 | 1658 | log_debug("rules contain %zu bytes tokens (%u * %zu bytes), %zu bytes strings", |
915bf0f6 | 1659 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1660 | |
915bf0f6 | 1661 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1662 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1663 | rules->strbuf->in_count, rules->strbuf->in_len, |
1664 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1665 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1666 | |
1667 | /* cleanup uid/gid cache */ | |
1668 | free(rules->uids); | |
1669 | rules->uids = NULL; | |
1670 | rules->uids_cur = 0; | |
1671 | rules->uids_max = 0; | |
1672 | free(rules->gids); | |
1673 | rules->gids = NULL; | |
1674 | rules->gids_cur = 0; | |
1675 | rules->gids_max = 0; | |
1676 | ||
1677 | dump_rules(rules); | |
1678 | return rules; | |
c7521974 KS |
1679 | } |
1680 | ||
7c85d636 | 1681 | struct udev_rules *udev_rules_unref(struct udev_rules *rules) |
c7521974 | 1682 | { |
912541b0 KS |
1683 | if (rules == NULL) |
1684 | return NULL; | |
1685 | free(rules->tokens); | |
915bf0f6 | 1686 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1687 | free(rules->uids); |
1688 | free(rules->gids); | |
1689 | free(rules); | |
1690 | return NULL; | |
c7521974 | 1691 | } |
6880b25d | 1692 | |
6ada823a KS |
1693 | bool udev_rules_check_timestamp(struct udev_rules *rules) |
1694 | { | |
5c11fbe3 KS |
1695 | if (!rules) |
1696 | return false; | |
1697 | ||
2ad8416d | 1698 | return paths_check_timestamp(rules_dirs, &rules->dirs_ts_usec, true); |
6ada823a KS |
1699 | } |
1700 | ||
6880b25d KS |
1701 | static int match_key(struct udev_rules *rules, struct token *token, const char *val) |
1702 | { | |
915bf0f6 | 1703 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1704 | char *pos; |
1705 | bool match = false; | |
1706 | ||
1707 | if (val == NULL) | |
1708 | val = ""; | |
1709 | ||
1710 | switch (token->key.glob) { | |
1711 | case GL_PLAIN: | |
33502ffe | 1712 | match = (streq(key_value, val)); |
912541b0 KS |
1713 | break; |
1714 | case GL_GLOB: | |
1715 | match = (fnmatch(key_value, val, 0) == 0); | |
1716 | break; | |
1717 | case GL_SPLIT: | |
1718 | { | |
33502ffe | 1719 | const char *s; |
912541b0 KS |
1720 | size_t len; |
1721 | ||
915bf0f6 | 1722 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1723 | len = strlen(val); |
1724 | for (;;) { | |
1725 | const char *next; | |
1726 | ||
33502ffe | 1727 | next = strchr(s, '|'); |
912541b0 | 1728 | if (next != NULL) { |
33502ffe | 1729 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1730 | |
641906e9 | 1731 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1732 | if (match) |
1733 | break; | |
1734 | } else { | |
33502ffe | 1735 | match = (streq(s, val)); |
912541b0 KS |
1736 | break; |
1737 | } | |
33502ffe | 1738 | s = &next[1]; |
912541b0 KS |
1739 | } |
1740 | break; | |
1741 | } | |
1742 | case GL_SPLIT_GLOB: | |
1743 | { | |
1744 | char value[UTIL_PATH_SIZE]; | |
1745 | ||
d5a89d7d | 1746 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 KS |
1747 | key_value = value; |
1748 | while (key_value != NULL) { | |
1749 | pos = strchr(key_value, '|'); | |
1750 | if (pos != NULL) { | |
1751 | pos[0] = '\0'; | |
1752 | pos = &pos[1]; | |
1753 | } | |
912541b0 KS |
1754 | match = (fnmatch(key_value, val, 0) == 0); |
1755 | if (match) | |
1756 | break; | |
1757 | key_value = pos; | |
1758 | } | |
1759 | break; | |
1760 | } | |
1761 | case GL_SOMETHING: | |
1762 | match = (val[0] != '\0'); | |
1763 | break; | |
1764 | case GL_UNSET: | |
1765 | return -1; | |
1766 | } | |
1767 | ||
baa30fbc | 1768 | if (match && (token->key.op == OP_MATCH)) |
912541b0 | 1769 | return 0; |
baa30fbc | 1770 | if (!match && (token->key.op == OP_NOMATCH)) |
912541b0 | 1771 | return 0; |
912541b0 | 1772 | return -1; |
6880b25d KS |
1773 | } |
1774 | ||
1775 | static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur) | |
1776 | { | |
912541b0 KS |
1777 | const char *name; |
1778 | char nbuf[UTIL_NAME_SIZE]; | |
1779 | const char *value; | |
1780 | char vbuf[UTIL_NAME_SIZE]; | |
1781 | size_t len; | |
1782 | ||
915bf0f6 | 1783 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1784 | switch (cur->key.attrsubst) { |
1785 | case SB_FORMAT: | |
1786 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf)); | |
1787 | name = nbuf; | |
1788 | /* fall through */ | |
1789 | case SB_NONE: | |
1790 | value = udev_device_get_sysattr_value(dev, name); | |
1791 | if (value == NULL) | |
1792 | return -1; | |
1793 | break; | |
1794 | case SB_SUBSYS: | |
1795 | if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0) | |
1796 | return -1; | |
1797 | value = vbuf; | |
1798 | break; | |
1799 | default: | |
1800 | return -1; | |
1801 | } | |
1802 | ||
1803 | /* remove trailing whitespace, if not asked to match for it */ | |
1804 | len = strlen(value); | |
1805 | if (len > 0 && isspace(value[len-1])) { | |
1806 | const char *key_value; | |
1807 | size_t klen; | |
1808 | ||
915bf0f6 | 1809 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1810 | klen = strlen(key_value); |
1811 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1812 | if (value != vbuf) { | |
d5a89d7d | 1813 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1814 | value = vbuf; |
1815 | } | |
1816 | while (len > 0 && isspace(vbuf[--len])) | |
1817 | vbuf[len] = '\0'; | |
912541b0 KS |
1818 | } |
1819 | } | |
1820 | ||
1821 | return match_key(rules, cur, value); | |
6880b25d KS |
1822 | } |
1823 | ||
1824 | enum escape_type { | |
912541b0 KS |
1825 | ESCAPE_UNSET, |
1826 | ESCAPE_NONE, | |
1827 | ESCAPE_REPLACE, | |
6880b25d KS |
1828 | }; |
1829 | ||
2181d30a | 1830 | int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event, const sigset_t *sigmask) |
6880b25d | 1831 | { |
912541b0 KS |
1832 | struct token *cur; |
1833 | struct token *rule; | |
1834 | enum escape_type esc = ESCAPE_UNSET; | |
1835 | bool can_set_name; | |
1836 | ||
1837 | if (rules->tokens == NULL) | |
1838 | return -1; | |
1839 | ||
33502ffe | 1840 | can_set_name = ((!streq(udev_device_get_action(event->dev), "remove")) && |
912541b0 KS |
1841 | (major(udev_device_get_devnum(event->dev)) > 0 || |
1842 | udev_device_get_ifindex(event->dev) > 0)); | |
1843 | ||
1844 | /* loop through token list, match, run actions or forward to next rule */ | |
1845 | cur = &rules->tokens[0]; | |
1846 | rule = cur; | |
1847 | for (;;) { | |
1848 | dump_token(rules, cur); | |
1849 | switch (cur->type) { | |
1850 | case TK_RULE: | |
1851 | /* current rule */ | |
1852 | rule = cur; | |
1853 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1854 | if (!can_set_name && rule->rule.can_set_name) | |
1855 | goto nomatch; | |
1856 | esc = ESCAPE_UNSET; | |
1857 | break; | |
1858 | case TK_M_ACTION: | |
1859 | if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0) | |
1860 | goto nomatch; | |
1861 | break; | |
1862 | case TK_M_DEVPATH: | |
1863 | if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0) | |
1864 | goto nomatch; | |
1865 | break; | |
1866 | case TK_M_KERNEL: | |
1867 | if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0) | |
1868 | goto nomatch; | |
1869 | break; | |
1870 | case TK_M_DEVLINK: { | |
912541b0 KS |
1871 | struct udev_list_entry *list_entry; |
1872 | bool match = false; | |
1873 | ||
1874 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { | |
1875 | const char *devlink; | |
1876 | ||
4cb72937 | 1877 | devlink = udev_list_entry_get_name(list_entry) + strlen("/dev/"); |
912541b0 KS |
1878 | if (match_key(rules, cur, devlink) == 0) { |
1879 | match = true; | |
1880 | break; | |
1881 | } | |
1882 | } | |
1883 | if (!match) | |
1884 | goto nomatch; | |
1885 | break; | |
1886 | } | |
1887 | case TK_M_NAME: | |
1888 | if (match_key(rules, cur, event->name) != 0) | |
1889 | goto nomatch; | |
1890 | break; | |
1891 | case TK_M_ENV: { | |
915bf0f6 | 1892 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1893 | const char *value; |
1894 | ||
1895 | value = udev_device_get_property_value(event->dev, key_name); | |
baa30fbc | 1896 | if (value == NULL) |
912541b0 | 1897 | value = ""; |
912541b0 KS |
1898 | if (match_key(rules, cur, value)) |
1899 | goto nomatch; | |
1900 | break; | |
1901 | } | |
1902 | case TK_M_TAG: { | |
1903 | struct udev_list_entry *list_entry; | |
1904 | bool match = false; | |
1905 | ||
1906 | udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) { | |
915bf0f6 | 1907 | if (streq(rules_str(rules, cur->key.value_off), udev_list_entry_get_name(list_entry))) { |
912541b0 KS |
1908 | match = true; |
1909 | break; | |
1910 | } | |
1911 | } | |
1912 | if (!match && (cur->key.op != OP_NOMATCH)) | |
1913 | goto nomatch; | |
1914 | break; | |
1915 | } | |
1916 | case TK_M_SUBSYSTEM: | |
1917 | if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0) | |
1918 | goto nomatch; | |
1919 | break; | |
1920 | case TK_M_DRIVER: | |
1921 | if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0) | |
1922 | goto nomatch; | |
1923 | break; | |
1924 | case TK_M_WAITFOR: { | |
1925 | char filename[UTIL_PATH_SIZE]; | |
1926 | int found; | |
1927 | ||
915bf0f6 | 1928 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename)); |
912541b0 KS |
1929 | found = (wait_for_file(event->dev, filename, 10) == 0); |
1930 | if (!found && (cur->key.op != OP_NOMATCH)) | |
1931 | goto nomatch; | |
1932 | break; | |
1933 | } | |
1934 | case TK_M_ATTR: | |
1935 | if (match_attr(rules, event->dev, event, cur) != 0) | |
1936 | goto nomatch; | |
1937 | break; | |
1938 | case TK_M_KERNELS: | |
1939 | case TK_M_SUBSYSTEMS: | |
1940 | case TK_M_DRIVERS: | |
1941 | case TK_M_ATTRS: | |
1942 | case TK_M_TAGS: { | |
1943 | struct token *next; | |
1944 | ||
1945 | /* get whole sequence of parent matches */ | |
1946 | next = cur; | |
1947 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
1948 | next++; | |
1949 | ||
1950 | /* loop over parents */ | |
1951 | event->dev_parent = event->dev; | |
1952 | for (;;) { | |
1953 | struct token *key; | |
1954 | ||
912541b0 KS |
1955 | /* loop over sequence of parent match keys */ |
1956 | for (key = cur; key < next; key++ ) { | |
1957 | dump_token(rules, key); | |
1958 | switch(key->type) { | |
1959 | case TK_M_KERNELS: | |
1960 | if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0) | |
1961 | goto try_parent; | |
1962 | break; | |
1963 | case TK_M_SUBSYSTEMS: | |
1964 | if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0) | |
1965 | goto try_parent; | |
1966 | break; | |
1967 | case TK_M_DRIVERS: | |
1968 | if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0) | |
1969 | goto try_parent; | |
1970 | break; | |
1971 | case TK_M_ATTRS: | |
1972 | if (match_attr(rules, event->dev_parent, event, key) != 0) | |
1973 | goto try_parent; | |
1974 | break; | |
1975 | case TK_M_TAGS: { | |
915bf0f6 | 1976 | bool match = udev_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
1977 | |
1978 | if (match && key->key.op == OP_NOMATCH) | |
1979 | goto try_parent; | |
1980 | if (!match && key->key.op == OP_MATCH) | |
1981 | goto try_parent; | |
1982 | break; | |
1983 | } | |
1984 | default: | |
1985 | goto nomatch; | |
1986 | } | |
912541b0 | 1987 | } |
912541b0 KS |
1988 | break; |
1989 | ||
1990 | try_parent: | |
1991 | event->dev_parent = udev_device_get_parent(event->dev_parent); | |
1992 | if (event->dev_parent == NULL) | |
1993 | goto nomatch; | |
1994 | } | |
1995 | /* move behind our sequence of parent match keys */ | |
1996 | cur = next; | |
1997 | continue; | |
1998 | } | |
1999 | case TK_M_TEST: { | |
2000 | char filename[UTIL_PATH_SIZE]; | |
2001 | struct stat statbuf; | |
2002 | int match; | |
2003 | ||
915bf0f6 | 2004 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename)); |
912541b0 KS |
2005 | if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) { |
2006 | if (filename[0] != '/') { | |
2007 | char tmp[UTIL_PATH_SIZE]; | |
2008 | ||
d5a89d7d KS |
2009 | strscpy(tmp, sizeof(tmp), filename); |
2010 | strscpyl(filename, sizeof(filename), | |
912541b0 KS |
2011 | udev_device_get_syspath(event->dev), "/", tmp, NULL); |
2012 | } | |
2013 | } | |
2014 | attr_subst_subdir(filename, sizeof(filename)); | |
2015 | ||
2016 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 2017 | if (match && cur->key.mode > 0) |
912541b0 | 2018 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
2019 | if (match && cur->key.op == OP_NOMATCH) |
2020 | goto nomatch; | |
2021 | if (!match && cur->key.op == OP_MATCH) | |
2022 | goto nomatch; | |
2023 | break; | |
2024 | } | |
2025 | case TK_M_EVENT_TIMEOUT: | |
9f6445e3 | 2026 | log_debug("OPTIONS event_timeout=%u", cur->key.event_timeout); |
912541b0 KS |
2027 | event->timeout_usec = cur->key.event_timeout * 1000 * 1000; |
2028 | break; | |
2029 | case TK_M_PROGRAM: { | |
2030 | char program[UTIL_PATH_SIZE]; | |
2031 | char **envp; | |
2032 | char result[UTIL_PATH_SIZE]; | |
2033 | ||
2034 | free(event->program_result); | |
2035 | event->program_result = NULL; | |
915bf0f6 | 2036 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program)); |
912541b0 | 2037 | envp = udev_device_get_properties_envp(event->dev); |
9f6445e3 | 2038 | log_debug("PROGRAM '%s' %s:%u", |
baa30fbc | 2039 | program, |
915bf0f6 | 2040 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2041 | rule->rule.filename_line); |
912541b0 KS |
2042 | |
2043 | if (udev_event_spawn(event, program, envp, sigmask, result, sizeof(result)) < 0) { | |
2044 | if (cur->key.op != OP_NOMATCH) | |
2045 | goto nomatch; | |
2046 | } else { | |
2047 | int count; | |
2048 | ||
2049 | util_remove_trailing_chars(result, '\n'); | |
2050 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2051 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); | |
2052 | if (count > 0) | |
9f6445e3 | 2053 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2054 | } |
2055 | event->program_result = strdup(result); | |
912541b0 KS |
2056 | if (cur->key.op == OP_NOMATCH) |
2057 | goto nomatch; | |
2058 | } | |
2059 | break; | |
2060 | } | |
2061 | case TK_M_IMPORT_FILE: { | |
2062 | char import[UTIL_PATH_SIZE]; | |
2063 | ||
915bf0f6 | 2064 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2065 | if (import_file_into_properties(event->dev, import) != 0) |
2066 | if (cur->key.op != OP_NOMATCH) | |
2067 | goto nomatch; | |
2068 | break; | |
2069 | } | |
2070 | case TK_M_IMPORT_PROG: { | |
2071 | char import[UTIL_PATH_SIZE]; | |
2072 | ||
915bf0f6 | 2073 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
9f6445e3 | 2074 | log_debug("IMPORT '%s' %s:%u", |
baa30fbc | 2075 | import, |
915bf0f6 | 2076 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2077 | rule->rule.filename_line); |
912541b0 KS |
2078 | |
2079 | if (import_program_into_properties(event, import, sigmask) != 0) | |
2080 | if (cur->key.op != OP_NOMATCH) | |
2081 | goto nomatch; | |
2082 | break; | |
2083 | } | |
2084 | case TK_M_IMPORT_BUILTIN: { | |
2085 | char command[UTIL_PATH_SIZE]; | |
2086 | ||
2087 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
2088 | /* check if we ran already */ | |
2089 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
9f6445e3 | 2090 | log_debug("IMPORT builtin skip '%s' %s:%u", |
baa30fbc | 2091 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2092 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2093 | rule->rule.filename_line); |
912541b0 KS |
2094 | /* return the result from earlier run */ |
2095 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
2096 | if (cur->key.op != OP_NOMATCH) | |
2097 | goto nomatch; | |
2098 | break; | |
2099 | } | |
2100 | /* mark as ran */ | |
2101 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2102 | } | |
2103 | ||
915bf0f6 | 2104 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command)); |
9f6445e3 | 2105 | log_debug("IMPORT builtin '%s' %s:%u", |
baa30fbc | 2106 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2107 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2108 | rule->rule.filename_line); |
912541b0 KS |
2109 | |
2110 | if (udev_builtin_run(event->dev, cur->key.builtin_cmd, command, false) != 0) { | |
2111 | /* remember failure */ | |
9f6445e3 | 2112 | log_debug("IMPORT builtin '%s' returned non-zero", |
baa30fbc | 2113 | udev_builtin_name(cur->key.builtin_cmd)); |
912541b0 KS |
2114 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2115 | if (cur->key.op != OP_NOMATCH) | |
2116 | goto nomatch; | |
2117 | } | |
2118 | break; | |
2119 | } | |
2120 | case TK_M_IMPORT_DB: { | |
915bf0f6 | 2121 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2122 | const char *value; |
2123 | ||
2124 | value = udev_device_get_property_value(event->dev_db, key); | |
2125 | if (value != NULL) { | |
2126 | struct udev_list_entry *entry; | |
2127 | ||
2128 | entry = udev_device_add_property(event->dev, key, value); | |
2129 | udev_list_entry_set_num(entry, true); | |
2130 | } else { | |
2131 | if (cur->key.op != OP_NOMATCH) | |
2132 | goto nomatch; | |
2133 | } | |
2134 | break; | |
2135 | } | |
2136 | case TK_M_IMPORT_CMDLINE: { | |
2137 | FILE *f; | |
2138 | bool imported = false; | |
2139 | ||
47ef94ac | 2140 | f = fopen("/proc/cmdline", "re"); |
912541b0 KS |
2141 | if (f != NULL) { |
2142 | char cmdline[4096]; | |
2143 | ||
2144 | if (fgets(cmdline, sizeof(cmdline), f) != NULL) { | |
915bf0f6 | 2145 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2146 | char *pos; |
2147 | ||
2148 | pos = strstr(cmdline, key); | |
2149 | if (pos != NULL) { | |
2150 | struct udev_list_entry *entry; | |
2151 | ||
2152 | pos += strlen(key); | |
2153 | if (pos[0] == '\0' || isspace(pos[0])) { | |
2154 | /* we import simple flags as 'FLAG=1' */ | |
2155 | entry = udev_device_add_property(event->dev, key, "1"); | |
2156 | udev_list_entry_set_num(entry, true); | |
2157 | imported = true; | |
2158 | } else if (pos[0] == '=') { | |
2159 | const char *value; | |
2160 | ||
2161 | pos++; | |
2162 | value = pos; | |
2163 | while (pos[0] != '\0' && !isspace(pos[0])) | |
2164 | pos++; | |
2165 | pos[0] = '\0'; | |
2166 | entry = udev_device_add_property(event->dev, key, value); | |
2167 | udev_list_entry_set_num(entry, true); | |
2168 | imported = true; | |
2169 | } | |
2170 | } | |
2171 | } | |
2172 | fclose(f); | |
2173 | } | |
2174 | if (!imported && cur->key.op != OP_NOMATCH) | |
2175 | goto nomatch; | |
2176 | break; | |
2177 | } | |
2178 | case TK_M_IMPORT_PARENT: { | |
2179 | char import[UTIL_PATH_SIZE]; | |
2180 | ||
915bf0f6 | 2181 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2182 | if (import_parent_into_properties(event->dev, import) != 0) |
2183 | if (cur->key.op != OP_NOMATCH) | |
2184 | goto nomatch; | |
2185 | break; | |
2186 | } | |
2187 | case TK_M_RESULT: | |
2188 | if (match_key(rules, cur, event->program_result) != 0) | |
2189 | goto nomatch; | |
2190 | break; | |
2191 | case TK_A_STRING_ESCAPE_NONE: | |
2192 | esc = ESCAPE_NONE; | |
2193 | break; | |
2194 | case TK_A_STRING_ESCAPE_REPLACE: | |
2195 | esc = ESCAPE_REPLACE; | |
2196 | break; | |
2197 | case TK_A_DB_PERSIST: | |
2198 | udev_device_set_db_persist(event->dev); | |
2199 | break; | |
2200 | case TK_A_INOTIFY_WATCH: | |
2201 | if (event->inotify_watch_final) | |
2202 | break; | |
2203 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2204 | event->inotify_watch_final = true; | |
2205 | event->inotify_watch = cur->key.watch; | |
2206 | break; | |
2207 | case TK_A_DEVLINK_PRIO: | |
2208 | udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio); | |
2209 | break; | |
2210 | case TK_A_OWNER: { | |
2211 | char owner[UTIL_NAME_SIZE]; | |
2212 | ||
2213 | if (event->owner_final) | |
2214 | break; | |
2215 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2216 | event->owner_final = true; | |
915bf0f6 | 2217 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner)); |
1edefa4f | 2218 | event->owner_set = true; |
912541b0 | 2219 | event->uid = util_lookup_user(event->udev, owner); |
9f6445e3 | 2220 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2221 | event->uid, |
915bf0f6 | 2222 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2223 | rule->rule.filename_line); |
912541b0 KS |
2224 | break; |
2225 | } | |
2226 | case TK_A_GROUP: { | |
2227 | char group[UTIL_NAME_SIZE]; | |
2228 | ||
2229 | if (event->group_final) | |
2230 | break; | |
2231 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2232 | event->group_final = true; | |
915bf0f6 | 2233 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group)); |
1edefa4f | 2234 | event->group_set = true; |
912541b0 | 2235 | event->gid = util_lookup_group(event->udev, group); |
9f6445e3 | 2236 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2237 | event->gid, |
915bf0f6 | 2238 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2239 | rule->rule.filename_line); |
912541b0 KS |
2240 | break; |
2241 | } | |
2242 | case TK_A_MODE: { | |
2243 | char mode_str[UTIL_NAME_SIZE]; | |
2244 | mode_t mode; | |
2245 | char *endptr; | |
2246 | ||
2247 | if (event->mode_final) | |
2248 | break; | |
915bf0f6 | 2249 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str)); |
912541b0 KS |
2250 | mode = strtol(mode_str, &endptr, 8); |
2251 | if (endptr[0] != '\0') { | |
9f6445e3 | 2252 | log_error("ignoring invalid mode '%s'", mode_str); |
912541b0 KS |
2253 | break; |
2254 | } | |
2255 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2256 | event->mode_final = true; | |
2257 | event->mode_set = true; | |
2258 | event->mode = mode; | |
9f6445e3 | 2259 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2260 | event->mode, |
915bf0f6 | 2261 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2262 | rule->rule.filename_line); |
912541b0 KS |
2263 | break; |
2264 | } | |
2265 | case TK_A_OWNER_ID: | |
2266 | if (event->owner_final) | |
2267 | break; | |
2268 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2269 | event->owner_final = true; | |
1edefa4f | 2270 | event->owner_set = true; |
912541b0 | 2271 | event->uid = cur->key.uid; |
9f6445e3 | 2272 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2273 | event->uid, |
915bf0f6 | 2274 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2275 | rule->rule.filename_line); |
912541b0 KS |
2276 | break; |
2277 | case TK_A_GROUP_ID: | |
2278 | if (event->group_final) | |
2279 | break; | |
2280 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2281 | event->group_final = true; | |
1edefa4f | 2282 | event->group_set = true; |
912541b0 | 2283 | event->gid = cur->key.gid; |
9f6445e3 | 2284 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2285 | event->gid, |
915bf0f6 | 2286 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2287 | rule->rule.filename_line); |
912541b0 KS |
2288 | break; |
2289 | case TK_A_MODE_ID: | |
2290 | if (event->mode_final) | |
2291 | break; | |
2292 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2293 | event->mode_final = true; | |
2294 | event->mode_set = true; | |
2295 | event->mode = cur->key.mode; | |
9f6445e3 | 2296 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2297 | event->mode, |
915bf0f6 | 2298 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2299 | rule->rule.filename_line); |
912541b0 | 2300 | break; |
c26547d6 KS |
2301 | case TK_A_SECLABEL: { |
2302 | const char *name, *label; | |
2303 | ||
2304 | name = rules_str(rules, cur->key.attr_off); | |
2305 | label = rules_str(rules, cur->key.value_off); | |
2306 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2307 | udev_list_cleanup(&event->seclabel_list); | |
2308 | udev_list_entry_add(&event->seclabel_list, name, label); | |
9f6445e3 | 2309 | log_debug("SECLABEL{%s}='%s' %s:%u", |
c26547d6 KS |
2310 | name, label, |
2311 | rules_str(rules, rule->rule.filename_off), | |
2312 | rule->rule.filename_line); | |
2313 | break; | |
2314 | } | |
912541b0 | 2315 | case TK_A_ENV: { |
915bf0f6 KS |
2316 | const char *name = rules_str(rules, cur->key.attr_off); |
2317 | char *value = rules_str(rules, cur->key.value_off); | |
07845c14 KS |
2318 | char value_new[UTIL_NAME_SIZE]; |
2319 | const char *value_old = NULL; | |
2320 | struct udev_list_entry *entry; | |
912541b0 | 2321 | |
07845c14 KS |
2322 | if (value[0] == '\0') { |
2323 | if (cur->key.op == OP_ADD) | |
2324 | break; | |
912541b0 | 2325 | udev_device_add_property(event->dev, name, NULL); |
07845c14 | 2326 | break; |
912541b0 | 2327 | } |
07845c14 KS |
2328 | |
2329 | if (cur->key.op == OP_ADD) | |
2330 | value_old = udev_device_get_property_value(event->dev, name); | |
2331 | if (value_old) { | |
2332 | char temp[UTIL_NAME_SIZE]; | |
2333 | ||
2334 | /* append value separated by space */ | |
2335 | udev_event_apply_format(event, value, temp, sizeof(temp)); | |
d5a89d7d | 2336 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 KS |
2337 | } else |
2338 | udev_event_apply_format(event, value, value_new, sizeof(value_new)); | |
2339 | ||
2340 | entry = udev_device_add_property(event->dev, name, value_new); | |
2341 | /* store in db, skip private keys */ | |
2342 | if (name[0] != '.') | |
2343 | udev_list_entry_set_num(entry, true); | |
912541b0 KS |
2344 | break; |
2345 | } | |
2346 | case TK_A_TAG: { | |
2347 | char tag[UTIL_PATH_SIZE]; | |
2348 | const char *p; | |
2349 | ||
915bf0f6 | 2350 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag)); |
912541b0 KS |
2351 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2352 | udev_device_cleanup_tags_list(event->dev); | |
2353 | for (p = tag; *p != '\0'; p++) { | |
2354 | if ((*p >= 'a' && *p <= 'z') || | |
2355 | (*p >= 'A' && *p <= 'Z') || | |
2356 | (*p >= '0' && *p <= '9') || | |
2357 | *p == '-' || *p == '_') | |
2358 | continue; | |
9f6445e3 | 2359 | log_error("ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2360 | break; |
2361 | } | |
2362 | udev_device_add_tag(event->dev, tag); | |
2363 | break; | |
2364 | } | |
2365 | case TK_A_NAME: { | |
915bf0f6 | 2366 | const char *name = rules_str(rules, cur->key.value_off); |
0ecfcbd4 | 2367 | |
912541b0 KS |
2368 | char name_str[UTIL_PATH_SIZE]; |
2369 | int count; | |
2370 | ||
2371 | if (event->name_final) | |
2372 | break; | |
2373 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2374 | event->name_final = true; | |
2375 | udev_event_apply_format(event, name, name_str, sizeof(name_str)); | |
2376 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2377 | count = util_replace_chars(name_str, "/"); | |
2378 | if (count > 0) | |
9f6445e3 | 2379 | log_debug("%i character(s) replaced", count); |
912541b0 | 2380 | } |
6ada823a | 2381 | if (major(udev_device_get_devnum(event->dev)) && |
4cb72937 | 2382 | (!streq(name_str, udev_device_get_devnode(event->dev) + strlen("/dev/")))) { |
6ada823a KS |
2383 | log_error("NAME=\"%s\" ignored, kernel device nodes " |
2384 | "can not be renamed; please fix it in %s:%u\n", name, | |
915bf0f6 | 2385 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
6ada823a | 2386 | break; |
0ecfcbd4 | 2387 | } |
912541b0 KS |
2388 | free(event->name); |
2389 | event->name = strdup(name_str); | |
9f6445e3 | 2390 | log_debug("NAME '%s' %s:%u", |
baa30fbc | 2391 | event->name, |
915bf0f6 | 2392 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2393 | rule->rule.filename_line); |
912541b0 KS |
2394 | break; |
2395 | } | |
2396 | case TK_A_DEVLINK: { | |
2397 | char temp[UTIL_PATH_SIZE]; | |
2398 | char filename[UTIL_PATH_SIZE]; | |
2399 | char *pos, *next; | |
2400 | int count = 0; | |
2401 | ||
2402 | if (event->devlink_final) | |
2403 | break; | |
2404 | if (major(udev_device_get_devnum(event->dev)) == 0) | |
2405 | break; | |
2406 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2407 | event->devlink_final = true; | |
2408 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2409 | udev_device_cleanup_devlinks_list(event->dev); | |
2410 | ||
2411 | /* allow multiple symlinks separated by spaces */ | |
915bf0f6 | 2412 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp)); |
912541b0 KS |
2413 | if (esc == ESCAPE_UNSET) |
2414 | count = util_replace_chars(temp, "/ "); | |
2415 | else if (esc == ESCAPE_REPLACE) | |
2416 | count = util_replace_chars(temp, "/"); | |
2417 | if (count > 0) | |
9f6445e3 | 2418 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2419 | pos = temp; |
2420 | while (isspace(pos[0])) | |
2421 | pos++; | |
2422 | next = strchr(pos, ' '); | |
2423 | while (next != NULL) { | |
2424 | next[0] = '\0'; | |
9f6445e3 | 2425 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2426 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2427 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2428 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2429 | while (isspace(next[1])) |
2430 | next++; | |
2431 | pos = &next[1]; | |
2432 | next = strchr(pos, ' '); | |
2433 | } | |
2434 | if (pos[0] != '\0') { | |
9f6445e3 | 2435 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2436 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2437 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2438 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2439 | } |
2440 | break; | |
2441 | } | |
2442 | case TK_A_ATTR: { | |
915bf0f6 | 2443 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
2444 | char attr[UTIL_PATH_SIZE]; |
2445 | char value[UTIL_NAME_SIZE]; | |
2446 | FILE *f; | |
2447 | ||
2448 | if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) | |
d5a89d7d | 2449 | strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL); |
912541b0 KS |
2450 | attr_subst_subdir(attr, sizeof(attr)); |
2451 | ||
915bf0f6 | 2452 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); |
9f6445e3 | 2453 | log_debug("ATTR '%s' writing '%s' %s:%u", attr, value, |
915bf0f6 | 2454 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2455 | rule->rule.filename_line); |
47ef94ac | 2456 | f = fopen(attr, "we"); |
912541b0 KS |
2457 | if (f != NULL) { |
2458 | if (fprintf(f, "%s", value) <= 0) | |
9f6445e3 | 2459 | log_error("error writing ATTR{%s}: %m", attr); |
912541b0 KS |
2460 | fclose(f); |
2461 | } else { | |
9f6445e3 | 2462 | log_error("error opening ATTR{%s} for writing: %m", attr); |
912541b0 KS |
2463 | } |
2464 | break; | |
2465 | } | |
83cd6b75 KS |
2466 | case TK_A_RUN_BUILTIN: |
2467 | case TK_A_RUN_PROGRAM: { | |
2468 | struct udev_list_entry *entry; | |
2469 | ||
912541b0 KS |
2470 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2471 | udev_list_cleanup(&event->run_list); | |
9f6445e3 | 2472 | log_debug("RUN '%s' %s:%u", |
915bf0f6 KS |
2473 | rules_str(rules, cur->key.value_off), |
2474 | rules_str(rules, rule->rule.filename_off), | |
baa30fbc | 2475 | rule->rule.filename_line); |
915bf0f6 | 2476 | entry = udev_list_entry_add(&event->run_list, rules_str(rules, cur->key.value_off), NULL); |
83cd6b75 | 2477 | udev_list_entry_set_num(entry, cur->key.builtin_cmd); |
912541b0 KS |
2478 | break; |
2479 | } | |
2480 | case TK_A_GOTO: | |
2481 | if (cur->key.rule_goto == 0) | |
2482 | break; | |
2483 | cur = &rules->tokens[cur->key.rule_goto]; | |
2484 | continue; | |
2485 | case TK_END: | |
2486 | return 0; | |
2487 | ||
2488 | case TK_M_PARENTS_MIN: | |
2489 | case TK_M_PARENTS_MAX: | |
2490 | case TK_M_MAX: | |
2491 | case TK_UNSET: | |
9f6445e3 | 2492 | log_error("wrong type %u", cur->type); |
912541b0 KS |
2493 | goto nomatch; |
2494 | } | |
2495 | ||
2496 | cur++; | |
2497 | continue; | |
2498 | nomatch: | |
2499 | /* fast-forward to next rule */ | |
2500 | cur = rule + rule->rule.token_count; | |
912541b0 | 2501 | } |
6880b25d | 2502 | } |
761dfddc | 2503 | |
84b6ad70 | 2504 | int udev_rules_apply_static_dev_perms(struct udev_rules *rules) |
761dfddc | 2505 | { |
912541b0 KS |
2506 | struct token *cur; |
2507 | struct token *rule; | |
2508 | uid_t uid = 0; | |
2509 | gid_t gid = 0; | |
2510 | mode_t mode = 0; | |
84b6ad70 TG |
2511 | _cleanup_strv_free_ char **tags = NULL; |
2512 | char **t; | |
2513 | FILE *f = NULL; | |
2514 | _cleanup_free_ char *path = NULL; | |
2515 | int r = 0; | |
912541b0 KS |
2516 | |
2517 | if (rules->tokens == NULL) | |
84b6ad70 | 2518 | return 0; |
912541b0 KS |
2519 | |
2520 | cur = &rules->tokens[0]; | |
2521 | rule = cur; | |
2522 | for (;;) { | |
2523 | switch (cur->type) { | |
2524 | case TK_RULE: | |
2525 | /* current rule */ | |
2526 | rule = cur; | |
2527 | ||
2528 | /* skip rules without a static_node tag */ | |
2529 | if (!rule->rule.has_static_node) | |
2530 | goto next; | |
2531 | ||
2532 | uid = 0; | |
2533 | gid = 0; | |
2534 | mode = 0; | |
84b6ad70 TG |
2535 | strv_free(tags); |
2536 | tags = NULL; | |
912541b0 KS |
2537 | break; |
2538 | case TK_A_OWNER_ID: | |
2539 | uid = cur->key.uid; | |
2540 | break; | |
2541 | case TK_A_GROUP_ID: | |
2542 | gid = cur->key.gid; | |
2543 | break; | |
2544 | case TK_A_MODE_ID: | |
2545 | mode = cur->key.mode; | |
84b6ad70 TG |
2546 | break; |
2547 | case TK_A_TAG: | |
2548 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2549 | if (r < 0) | |
2550 | goto finish; | |
2551 | ||
912541b0 KS |
2552 | break; |
2553 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2554 | char device_node[UTIL_PATH_SIZE]; |
2555 | char tags_dir[UTIL_PATH_SIZE]; | |
2556 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2557 | struct stat stats; |
2558 | ||
2559 | /* we assure, that the permissions tokens are sorted before the static token */ | |
84b6ad70 | 2560 | if (mode == 0 && uid == 0 && gid == 0 && tags == NULL) |
912541b0 | 2561 | goto next; |
d6f116a7 | 2562 | |
84b6ad70 | 2563 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
84b6ad70 | 2564 | |
d6f116a7 | 2565 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2566 | if (tags) { |
84b6ad70 TG |
2567 | STRV_FOREACH(t, tags) { |
2568 | _cleanup_free_ char *unescaped_filename = NULL; | |
2569 | ||
2570 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2571 | r = mkdir_p(tags_dir, 0755); | |
2572 | if (r < 0) { | |
9f6445e3 | 2573 | log_error("failed to create %s: %s", tags_dir, strerror(-r)); |
84b6ad70 TG |
2574 | return r; |
2575 | } | |
2576 | ||
2577 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2578 | ||
2579 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2580 | r = symlink(device_node, tag_symlink); | |
2581 | if (r < 0 && errno != EEXIST) { | |
9f6445e3 | 2582 | log_error("failed to create symlink %s -> %s: %m", tag_symlink, device_node); |
84b6ad70 TG |
2583 | return -errno; |
2584 | } else | |
2585 | r = 0; | |
2586 | } | |
2587 | } | |
2588 | ||
15a72200 TG |
2589 | /* don't touch the permissions if only the tags were set */ |
2590 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2591 | break; |
2592 | ||
2593 | if (stat(device_node, &stats) != 0) | |
2594 | break; | |
2595 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2596 | break; | |
15a72200 | 2597 | |
912541b0 KS |
2598 | if (mode == 0) { |
2599 | if (gid > 0) | |
2600 | mode = 0660; | |
2601 | else | |
2602 | mode = 0600; | |
2603 | } | |
2604 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 TG |
2605 | r = chmod(device_node, mode); |
2606 | if (r < 0) { | |
9f6445e3 | 2607 | log_error("failed to chmod '%s' %#o", device_node, mode); |
490f0087 TG |
2608 | return -errno; |
2609 | } else | |
9f6445e3 | 2610 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2611 | } |
2612 | ||
2613 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 TG |
2614 | r = chown(device_node, uid, gid); |
2615 | if (r < 0) { | |
9f6445e3 | 2616 | log_error("failed to chown '%s' %u %u ", device_node, uid, gid); |
490f0087 TG |
2617 | return -errno; |
2618 | } else | |
9f6445e3 | 2619 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2620 | } |
2621 | ||
84b6ad70 | 2622 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2623 | break; |
2624 | } | |
2625 | case TK_END: | |
84b6ad70 | 2626 | goto finish; |
912541b0 KS |
2627 | } |
2628 | ||
2629 | cur++; | |
2630 | continue; | |
761dfddc | 2631 | next: |
912541b0 KS |
2632 | /* fast-forward to next rule */ |
2633 | cur = rule + rule->rule.token_count; | |
2634 | continue; | |
2635 | } | |
84b6ad70 TG |
2636 | |
2637 | finish: | |
2638 | if (f) { | |
2639 | fflush(f); | |
2640 | fchmod(fileno(f), 0644); | |
2641 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
2642 | r = -errno; | |
2643 | unlink("/run/udev/static_node-tags"); | |
2644 | unlink(path); | |
2645 | } | |
2646 | fclose(f); | |
2647 | } | |
2648 | ||
2649 | return r; | |
761dfddc | 2650 | } |