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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 | ||
8e3ba377 | 85 | /* KEY=="", 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 | 93 | OP_ADD, |
8e3ba377 | 94 | OP_REMOVE, |
912541b0 KS |
95 | OP_ASSIGN, |
96 | OP_ASSIGN_FINAL, | |
c7521974 KS |
97 | }; |
98 | ||
ac218d9c | 99 | enum string_glob_type { |
912541b0 | 100 | GL_UNSET, |
a1525d17 | 101 | GL_PLAIN, /* no special chars */ |
912541b0 | 102 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
103 | GL_SPLIT, /* multi-value A|B */ |
104 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
105 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
106 | }; |
107 | ||
32028733 | 108 | enum string_subst_type { |
912541b0 KS |
109 | SB_UNSET, |
110 | SB_NONE, | |
111 | SB_FORMAT, | |
112 | SB_SUBSYS, | |
32028733 KS |
113 | }; |
114 | ||
154a7b84 | 115 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 116 | enum token_type { |
912541b0 KS |
117 | TK_UNSET, |
118 | TK_RULE, | |
119 | ||
a1525d17 KS |
120 | TK_M_ACTION, /* val */ |
121 | TK_M_DEVPATH, /* val */ | |
122 | TK_M_KERNEL, /* val */ | |
123 | TK_M_DEVLINK, /* val */ | |
124 | TK_M_NAME, /* val */ | |
125 | TK_M_ENV, /* val, attr */ | |
126 | TK_M_TAG, /* val */ | |
127 | TK_M_SUBSYSTEM, /* val */ | |
128 | TK_M_DRIVER, /* val */ | |
129 | TK_M_WAITFOR, /* val */ | |
130 | TK_M_ATTR, /* val, attr */ | |
912541b0 KS |
131 | |
132 | TK_M_PARENTS_MIN, | |
a1525d17 | 133 | TK_M_KERNELS, /* val */ |
912541b0 | 134 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
135 | TK_M_DRIVERS, /* val */ |
136 | TK_M_ATTRS, /* val, attr */ | |
137 | TK_M_TAGS, /* val */ | |
912541b0 KS |
138 | TK_M_PARENTS_MAX, |
139 | ||
a1525d17 | 140 | TK_M_TEST, /* val, mode_t */ |
a1525d17 KS |
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; | |
912541b0 KS |
204 | int watch; |
205 | enum udev_builtin_cmd builtin_cmd; | |
206 | }; | |
207 | } key; | |
208 | }; | |
4052400f KS |
209 | }; |
210 | ||
912541b0 | 211 | #define MAX_TK 64 |
4052400f | 212 | struct rule_tmp { |
912541b0 KS |
213 | struct udev_rules *rules; |
214 | struct token rule; | |
215 | struct token token[MAX_TK]; | |
216 | unsigned int token_cur; | |
4052400f KS |
217 | }; |
218 | ||
baa30fbc | 219 | #ifdef DEBUG |
9ec6e95b | 220 | static const char *operation_str(enum operation_type type) { |
912541b0 | 221 | static const char *operation_strs[] = { |
a1525d17 KS |
222 | [OP_UNSET] = "UNSET", |
223 | [OP_MATCH] = "match", | |
224 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
225 | [OP_MATCH_MAX] = "MATCH_MAX", |
226 | ||
a1525d17 | 227 | [OP_ADD] = "add", |
8e3ba377 | 228 | [OP_REMOVE] = "remove", |
a1525d17 KS |
229 | [OP_ASSIGN] = "assign", |
230 | [OP_ASSIGN_FINAL] = "assign-final", | |
912541b0 KS |
231 | } ; |
232 | ||
233 | return operation_strs[type]; | |
5d6a1fa6 | 234 | } |
4052400f | 235 | |
9ec6e95b | 236 | static const char *string_glob_str(enum string_glob_type type) { |
912541b0 | 237 | static const char *string_glob_strs[] = { |
a1525d17 KS |
238 | [GL_UNSET] = "UNSET", |
239 | [GL_PLAIN] = "plain", | |
240 | [GL_GLOB] = "glob", | |
241 | [GL_SPLIT] = "split", | |
242 | [GL_SPLIT_GLOB] = "split-glob", | |
243 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
244 | }; |
245 | ||
246 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
247 | } |
248 | ||
9ec6e95b | 249 | static const char *token_str(enum token_type type) { |
912541b0 | 250 | static const char *token_strs[] = { |
a1525d17 KS |
251 | [TK_UNSET] = "UNSET", |
252 | [TK_RULE] = "RULE", | |
912541b0 | 253 | |
a1525d17 | 254 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 255 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 256 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 257 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
258 | [TK_M_NAME] = "M NAME", |
259 | [TK_M_ENV] = "M ENV", | |
260 | [TK_M_TAG] = "M TAG", | |
261 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
262 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 263 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 264 | [TK_M_ATTR] = "M ATTR", |
912541b0 | 265 | |
a1525d17 | 266 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 267 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 268 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 269 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
270 | [TK_M_ATTRS] = "M ATTRS", |
271 | [TK_M_TAGS] = "M TAGS", | |
272 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 273 | |
a1525d17 | 274 | [TK_M_TEST] = "M TEST", |
912541b0 | 275 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
276 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
277 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
278 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
279 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
280 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
281 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
282 | [TK_M_RESULT] = "M RESULT", | |
283 | [TK_M_MAX] = "M MAX", | |
284 | ||
285 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
286 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
287 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
288 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
289 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
290 | [TK_A_OWNER] = "A OWNER", | |
291 | [TK_A_GROUP] = "A GROUP", | |
292 | [TK_A_MODE] = "A MODE", | |
293 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
294 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
295 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 296 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 297 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
298 | [TK_A_ENV] = "A ENV", |
299 | [TK_A_TAG] = "A ENV", | |
300 | [TK_A_NAME] = "A NAME", | |
912541b0 | 301 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 302 | [TK_A_ATTR] = "A ATTR", |
83cd6b75 KS |
303 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
304 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 305 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 306 | |
a1525d17 | 307 | [TK_END] = "END", |
912541b0 KS |
308 | }; |
309 | ||
310 | return token_strs[type]; | |
5d6a1fa6 | 311 | } |
c7521974 | 312 | |
9ec6e95b | 313 | static void dump_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
314 | enum token_type type = token->type; |
315 | enum operation_type op = token->key.op; | |
316 | enum string_glob_type glob = token->key.glob; | |
915bf0f6 | 317 | const char *value = str(rules, token->key.value_off); |
912541b0 KS |
318 | const char *attr = &rules->buf[token->key.attr_off]; |
319 | ||
320 | switch (type) { | |
321 | case TK_RULE: | |
322 | { | |
323 | const char *tks_ptr = (char *)rules->tokens; | |
324 | const char *tk_ptr = (char *)token; | |
325 | unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token); | |
326 | ||
9f6445e3 | 327 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
baa30fbc KS |
328 | &rules->buf[token->rule.filename_off], token->rule.filename_line, |
329 | idx, token->rule.token_count, | |
330 | &rules->buf[token->rule.label_off]); | |
912541b0 KS |
331 | break; |
332 | } | |
333 | case TK_M_ACTION: | |
334 | case TK_M_DEVPATH: | |
335 | case TK_M_KERNEL: | |
336 | case TK_M_SUBSYSTEM: | |
337 | case TK_M_DRIVER: | |
338 | case TK_M_WAITFOR: | |
339 | case TK_M_DEVLINK: | |
340 | case TK_M_NAME: | |
341 | case TK_M_KERNELS: | |
342 | case TK_M_SUBSYSTEMS: | |
343 | case TK_M_DRIVERS: | |
344 | case TK_M_TAGS: | |
345 | case TK_M_PROGRAM: | |
346 | case TK_M_IMPORT_FILE: | |
347 | case TK_M_IMPORT_PROG: | |
348 | case TK_M_IMPORT_DB: | |
349 | case TK_M_IMPORT_CMDLINE: | |
350 | case TK_M_IMPORT_PARENT: | |
351 | case TK_M_RESULT: | |
352 | case TK_A_NAME: | |
353 | case TK_A_DEVLINK: | |
354 | case TK_A_OWNER: | |
355 | case TK_A_GROUP: | |
356 | case TK_A_MODE: | |
83cd6b75 KS |
357 | case TK_A_RUN_BUILTIN: |
358 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 359 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 360 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
361 | break; |
362 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 363 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
364 | break; |
365 | case TK_M_ATTR: | |
366 | case TK_M_ATTRS: | |
367 | case TK_M_ENV: | |
368 | case TK_A_ATTR: | |
369 | case TK_A_ENV: | |
9f6445e3 | 370 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 371 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
372 | break; |
373 | case TK_M_TAG: | |
374 | case TK_A_TAG: | |
9f6445e3 | 375 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
376 | break; |
377 | case TK_A_STRING_ESCAPE_NONE: | |
378 | case TK_A_STRING_ESCAPE_REPLACE: | |
379 | case TK_A_DB_PERSIST: | |
9f6445e3 | 380 | log_debug("%s", token_str(type)); |
912541b0 KS |
381 | break; |
382 | case TK_M_TEST: | |
9f6445e3 | 383 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 384 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
385 | break; |
386 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 387 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
388 | break; |
389 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 390 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
391 | break; |
392 | case TK_A_OWNER_ID: | |
9f6445e3 | 393 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
394 | break; |
395 | case TK_A_GROUP_ID: | |
9f6445e3 | 396 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
397 | break; |
398 | case TK_A_MODE_ID: | |
9f6445e3 | 399 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
400 | break; |
401 | case TK_A_STATIC_NODE: | |
9f6445e3 | 402 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 403 | break; |
c26547d6 | 404 | case TK_A_SECLABEL: |
9f6445e3 | 405 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 406 | break; |
912541b0 | 407 | case TK_A_GOTO: |
9f6445e3 | 408 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
409 | break; |
410 | case TK_END: | |
9f6445e3 | 411 | log_debug("* %s", token_str(type)); |
912541b0 KS |
412 | break; |
413 | case TK_M_PARENTS_MIN: | |
414 | case TK_M_PARENTS_MAX: | |
415 | case TK_M_MAX: | |
416 | case TK_UNSET: | |
9f6445e3 | 417 | log_debug("unknown type %u", type); |
912541b0 KS |
418 | break; |
419 | } | |
4052400f | 420 | } |
154a7b84 | 421 | |
9ec6e95b | 422 | static void dump_rules(struct udev_rules *rules) { |
912541b0 KS |
423 | unsigned int i; |
424 | ||
9f6445e3 | 425 | log_debug("dumping %u (%zu bytes) tokens, %u (%zu bytes) strings", |
baa30fbc KS |
426 | rules->token_cur, |
427 | rules->token_cur * sizeof(struct token), | |
428 | rules->buf_count, | |
429 | rules->buf_cur); | |
f168c273 | 430 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 431 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
432 | } |
433 | #else | |
4052400f KS |
434 | static inline void dump_token(struct udev_rules *rules, struct token *token) {} |
435 | static inline void dump_rules(struct udev_rules *rules) {} | |
baa30fbc | 436 | #endif /* DEBUG */ |
c7521974 | 437 | |
9ec6e95b | 438 | static int add_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
439 | /* grow buffer if needed */ |
440 | if (rules->token_cur+1 >= rules->token_max) { | |
441 | struct token *tokens; | |
442 | unsigned int add; | |
443 | ||
444 | /* double the buffer size */ | |
445 | add = rules->token_max; | |
446 | if (add < 8) | |
447 | add = 8; | |
448 | ||
449 | tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token)); | |
450 | if (tokens == NULL) | |
451 | return -1; | |
912541b0 KS |
452 | rules->tokens = tokens; |
453 | rules->token_max += add; | |
454 | } | |
455 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); | |
456 | rules->token_cur++; | |
457 | return 0; | |
c7521974 | 458 | } |
a27cd06c | 459 | |
9ec6e95b | 460 | static uid_t add_uid(struct udev_rules *rules, const char *owner) { |
912541b0 | 461 | unsigned int i; |
23bf8dd7 | 462 | uid_t uid = 0; |
912541b0 | 463 | unsigned int off; |
23bf8dd7 | 464 | int r; |
912541b0 KS |
465 | |
466 | /* lookup, if we know it already */ | |
467 | for (i = 0; i < rules->uids_cur; i++) { | |
468 | off = rules->uids[i].name_off; | |
915bf0f6 | 469 | if (streq(rules_str(rules, off), owner)) { |
912541b0 | 470 | uid = rules->uids[i].uid; |
912541b0 KS |
471 | return uid; |
472 | } | |
473 | } | |
23bf8dd7 TG |
474 | r = get_user_creds(&owner, &uid, NULL, NULL, NULL); |
475 | if (r < 0) { | |
476 | if (r == -ENOENT || r == -ESRCH) | |
b12b7871 | 477 | log_error("specified user '%s' unknown\n", owner); |
23bf8dd7 | 478 | else |
b12b7871 | 479 | log_error("error resolving user '%s': %s\n", owner, strerror(-r)); |
23bf8dd7 | 480 | } |
912541b0 KS |
481 | |
482 | /* grow buffer if needed */ | |
483 | if (rules->uids_cur+1 >= rules->uids_max) { | |
484 | struct uid_gid *uids; | |
485 | unsigned int add; | |
486 | ||
487 | /* double the buffer size */ | |
488 | add = rules->uids_max; | |
489 | if (add < 1) | |
490 | add = 8; | |
491 | ||
492 | uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid)); | |
493 | if (uids == NULL) | |
494 | return uid; | |
912541b0 KS |
495 | rules->uids = uids; |
496 | rules->uids_max += add; | |
497 | } | |
498 | rules->uids[rules->uids_cur].uid = uid; | |
915bf0f6 | 499 | off = rules_add_string(rules, owner); |
912541b0 KS |
500 | if (off <= 0) |
501 | return uid; | |
502 | rules->uids[rules->uids_cur].name_off = off; | |
503 | rules->uids_cur++; | |
504 | return uid; | |
154a7b84 KS |
505 | } |
506 | ||
9ec6e95b | 507 | static gid_t add_gid(struct udev_rules *rules, const char *group) { |
912541b0 | 508 | unsigned int i; |
23bf8dd7 | 509 | gid_t gid = 0; |
912541b0 | 510 | unsigned int off; |
23bf8dd7 | 511 | int r; |
912541b0 KS |
512 | |
513 | /* lookup, if we know it already */ | |
514 | for (i = 0; i < rules->gids_cur; i++) { | |
515 | off = rules->gids[i].name_off; | |
915bf0f6 | 516 | if (streq(rules_str(rules, off), group)) { |
912541b0 | 517 | gid = rules->gids[i].gid; |
912541b0 KS |
518 | return gid; |
519 | } | |
520 | } | |
23bf8dd7 TG |
521 | r = get_group_creds(&group, &gid); |
522 | if (r < 0) { | |
523 | if (r == -ENOENT || r == -ESRCH) | |
b12b7871 | 524 | log_error("specified group '%s' unknown\n", group); |
23bf8dd7 | 525 | else |
b12b7871 | 526 | log_error("error resolving group '%s': %s\n", group, strerror(-r)); |
23bf8dd7 | 527 | } |
912541b0 KS |
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 | ||
9ec6e95b | 554 | static int import_property_from_string(struct udev_device *dev, char *line) { |
912541b0 KS |
555 | char *key; |
556 | char *val; | |
557 | size_t len; | |
0aa5b4d1 | 558 | struct udev_list_entry *entry; |
912541b0 KS |
559 | |
560 | /* find key */ | |
561 | key = line; | |
562 | while (isspace(key[0])) | |
563 | key++; | |
564 | ||
565 | /* comment or empty line */ | |
566 | if (key[0] == '#' || key[0] == '\0') | |
567 | return -1; | |
568 | ||
569 | /* split key/value */ | |
570 | val = strchr(key, '='); | |
571 | if (val == NULL) | |
572 | return -1; | |
573 | val[0] = '\0'; | |
574 | val++; | |
575 | ||
576 | /* find value */ | |
577 | while (isspace(val[0])) | |
578 | val++; | |
579 | ||
580 | /* terminate key */ | |
581 | len = strlen(key); | |
582 | if (len == 0) | |
583 | return -1; | |
584 | while (isspace(key[len-1])) | |
585 | len--; | |
586 | key[len] = '\0'; | |
587 | ||
588 | /* terminate value */ | |
589 | len = strlen(val); | |
590 | if (len == 0) | |
591 | return -1; | |
592 | while (isspace(val[len-1])) | |
593 | len--; | |
594 | val[len] = '\0'; | |
595 | ||
596 | if (len == 0) | |
597 | return -1; | |
598 | ||
599 | /* unquote */ | |
600 | if (val[0] == '"' || val[0] == '\'') { | |
601 | if (val[len-1] != val[0]) { | |
9f6445e3 | 602 | log_debug("inconsistent quoting: '%s', skip", line); |
912541b0 KS |
603 | return -1; |
604 | } | |
605 | val[len-1] = '\0'; | |
606 | val++; | |
607 | } | |
608 | ||
0aa5b4d1 KS |
609 | entry = udev_device_add_property(dev, key, val); |
610 | /* store in db, skip private keys */ | |
611 | if (key[0] != '.') | |
612 | udev_list_entry_set_num(entry, true); | |
613 | ||
912541b0 | 614 | return 0; |
be4bedd1 KS |
615 | } |
616 | ||
9ec6e95b | 617 | static int import_file_into_properties(struct udev_device *dev, const char *filename) { |
912541b0 KS |
618 | FILE *f; |
619 | char line[UTIL_LINE_SIZE]; | |
620 | ||
47ef94ac | 621 | f = fopen(filename, "re"); |
912541b0 KS |
622 | if (f == NULL) |
623 | return -1; | |
624 | while (fgets(line, sizeof(line), f) != NULL) | |
625 | import_property_from_string(dev, line); | |
626 | fclose(f); | |
627 | return 0; | |
bd0ed2ff KS |
628 | } |
629 | ||
dd5eddd2 KS |
630 | static int import_program_into_properties(struct udev_event *event, |
631 | usec_t timeout_usec, | |
67117413 | 632 | usec_t timeout_warn_usec, |
dd5eddd2 | 633 | const char *program, const sigset_t *sigmask) { |
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); | |
67117413 | 641 | err = udev_event_spawn(event, timeout_usec, timeout_warn_usec, program, envp, sigmask, result, sizeof(result)); |
912541b0 KS |
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 | ||
9ec6e95b | 660 | static int import_parent_into_properties(struct udev_device *dev, const char *filter) { |
912541b0 KS |
661 | struct udev_device *dev_parent; |
662 | struct udev_list_entry *list_entry; | |
663 | ||
664 | dev_parent = udev_device_get_parent(dev); | |
665 | if (dev_parent == NULL) | |
666 | return -1; | |
667 | ||
912541b0 KS |
668 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) { |
669 | const char *key = udev_list_entry_get_name(list_entry); | |
670 | const char *val = udev_list_entry_get_value(list_entry); | |
671 | ||
672 | if (fnmatch(filter, key, 0) == 0) { | |
673 | struct udev_list_entry *entry; | |
674 | ||
912541b0 KS |
675 | entry = udev_device_add_property(dev, key, val); |
676 | /* store in db, skip private keys */ | |
677 | if (key[0] != '.') | |
678 | udev_list_entry_set_num(entry, true); | |
679 | } | |
680 | } | |
681 | return 0; | |
e2ecb34f KS |
682 | } |
683 | ||
912541b0 | 684 | #define WAIT_LOOP_PER_SECOND 50 |
9ec6e95b | 685 | static int wait_for_file(struct udev_device *dev, const char *file, int timeout) { |
912541b0 KS |
686 | char filepath[UTIL_PATH_SIZE]; |
687 | char devicepath[UTIL_PATH_SIZE]; | |
688 | struct stat stats; | |
689 | int loop = timeout * WAIT_LOOP_PER_SECOND; | |
690 | ||
691 | /* a relative path is a device attribute */ | |
692 | devicepath[0] = '\0'; | |
693 | if (file[0] != '/') { | |
d5a89d7d KS |
694 | strscpyl(devicepath, sizeof(devicepath), udev_device_get_syspath(dev), NULL); |
695 | strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL); | |
912541b0 KS |
696 | file = filepath; |
697 | } | |
698 | ||
912541b0 KS |
699 | while (--loop) { |
700 | const struct timespec duration = { 0, 1000 * 1000 * 1000 / WAIT_LOOP_PER_SECOND }; | |
701 | ||
702 | /* lookup file */ | |
703 | if (stat(file, &stats) == 0) { | |
9f6445e3 | 704 | log_debug("file '%s' appeared after %i loops", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1); |
912541b0 KS |
705 | return 0; |
706 | } | |
707 | /* make sure, the device did not disappear in the meantime */ | |
708 | if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) { | |
9f6445e3 | 709 | log_debug("device disappeared while waiting for '%s'", file); |
912541b0 KS |
710 | return -2; |
711 | } | |
9f6445e3 | 712 | log_debug("wait for '%s' for %i mseconds", file, 1000 / WAIT_LOOP_PER_SECOND); |
912541b0 KS |
713 | nanosleep(&duration, NULL); |
714 | } | |
9f6445e3 | 715 | log_debug("waiting for '%s' failed", file); |
912541b0 | 716 | return -1; |
b2fe4b9a KS |
717 | } |
718 | ||
9ec6e95b | 719 | static int attr_subst_subdir(char *attr, size_t len) { |
912541b0 KS |
720 | bool found = false; |
721 | ||
722 | if (strstr(attr, "/*/")) { | |
723 | char *pos; | |
724 | char dirname[UTIL_PATH_SIZE]; | |
725 | const char *tail; | |
726 | DIR *dir; | |
727 | ||
d5a89d7d | 728 | strscpy(dirname, sizeof(dirname), attr); |
912541b0 KS |
729 | pos = strstr(dirname, "/*/"); |
730 | if (pos == NULL) | |
731 | return -1; | |
732 | pos[0] = '\0'; | |
733 | tail = &pos[2]; | |
734 | dir = opendir(dirname); | |
735 | if (dir != NULL) { | |
736 | struct dirent *dent; | |
737 | ||
738 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
739 | struct stat stats; | |
740 | ||
741 | if (dent->d_name[0] == '.') | |
742 | continue; | |
d5a89d7d | 743 | strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL); |
912541b0 KS |
744 | if (stat(attr, &stats) == 0) { |
745 | found = true; | |
746 | break; | |
747 | } | |
748 | } | |
749 | closedir(dir); | |
750 | } | |
751 | } | |
752 | ||
753 | return found; | |
0ea5e96e KS |
754 | } |
755 | ||
9ec6e95b | 756 | static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value) { |
912541b0 KS |
757 | char *linepos; |
758 | char *temp; | |
759 | ||
760 | linepos = *line; | |
761 | if (linepos == NULL || linepos[0] == '\0') | |
762 | return -1; | |
763 | ||
764 | /* skip whitespace */ | |
765 | while (isspace(linepos[0]) || linepos[0] == ',') | |
766 | linepos++; | |
767 | ||
768 | /* get the key */ | |
769 | if (linepos[0] == '\0') | |
770 | return -1; | |
771 | *key = linepos; | |
772 | ||
773 | for (;;) { | |
774 | linepos++; | |
775 | if (linepos[0] == '\0') | |
776 | return -1; | |
777 | if (isspace(linepos[0])) | |
778 | break; | |
779 | if (linepos[0] == '=') | |
780 | break; | |
8e3ba377 | 781 | if ((linepos[0] == '+') || (linepos[0] == '-') || (linepos[0] == '!') || (linepos[0] == ':')) |
912541b0 KS |
782 | if (linepos[1] == '=') |
783 | break; | |
784 | } | |
785 | ||
786 | /* remember end of key */ | |
787 | temp = linepos; | |
788 | ||
789 | /* skip whitespace after key */ | |
790 | while (isspace(linepos[0])) | |
791 | linepos++; | |
792 | if (linepos[0] == '\0') | |
793 | return -1; | |
794 | ||
795 | /* get operation type */ | |
796 | if (linepos[0] == '=' && linepos[1] == '=') { | |
797 | *op = OP_MATCH; | |
798 | linepos += 2; | |
799 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
800 | *op = OP_NOMATCH; | |
801 | linepos += 2; | |
802 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
803 | *op = OP_ADD; | |
804 | linepos += 2; | |
8e3ba377 DH |
805 | } else if (linepos[0] == '-' && linepos[1] == '=') { |
806 | *op = OP_REMOVE; | |
807 | linepos += 2; | |
912541b0 KS |
808 | } else if (linepos[0] == '=') { |
809 | *op = OP_ASSIGN; | |
810 | linepos++; | |
811 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
812 | *op = OP_ASSIGN_FINAL; | |
813 | linepos += 2; | |
814 | } else | |
815 | return -1; | |
816 | ||
817 | /* terminate key */ | |
818 | temp[0] = '\0'; | |
819 | ||
820 | /* skip whitespace after operator */ | |
821 | while (isspace(linepos[0])) | |
822 | linepos++; | |
823 | if (linepos[0] == '\0') | |
824 | return -1; | |
825 | ||
826 | /* get the value */ | |
827 | if (linepos[0] == '"') | |
828 | linepos++; | |
829 | else | |
830 | return -1; | |
831 | *value = linepos; | |
832 | ||
833 | /* terminate */ | |
834 | temp = strchr(linepos, '"'); | |
835 | if (!temp) | |
836 | return -1; | |
837 | temp[0] = '\0'; | |
838 | temp++; | |
912541b0 KS |
839 | |
840 | /* move line to next key */ | |
841 | *line = temp; | |
842 | return 0; | |
6880b25d | 843 | } |
95776dc6 | 844 | |
6880b25d | 845 | /* extract possible KEY{attr} */ |
9ec6e95b | 846 | static const char *get_key_attribute(struct udev *udev, char *str) { |
912541b0 KS |
847 | char *pos; |
848 | char *attr; | |
849 | ||
850 | attr = strchr(str, '{'); | |
851 | if (attr != NULL) { | |
852 | attr++; | |
853 | pos = strchr(attr, '}'); | |
854 | if (pos == NULL) { | |
9f6445e3 | 855 | log_error("missing closing brace for format"); |
912541b0 KS |
856 | return NULL; |
857 | } | |
858 | pos[0] = '\0'; | |
912541b0 KS |
859 | return attr; |
860 | } | |
861 | return NULL; | |
6880b25d | 862 | } |
95776dc6 | 863 | |
0ef254d5 | 864 | static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
912541b0 | 865 | enum operation_type op, |
9ec6e95b | 866 | const char *value, const void *data) { |
912541b0 KS |
867 | struct token *token = &rule_tmp->token[rule_tmp->token_cur]; |
868 | const char *attr = NULL; | |
869 | ||
29804cc1 | 870 | memzero(token, sizeof(struct token)); |
912541b0 KS |
871 | |
872 | switch (type) { | |
873 | case TK_M_ACTION: | |
874 | case TK_M_DEVPATH: | |
875 | case TK_M_KERNEL: | |
876 | case TK_M_SUBSYSTEM: | |
877 | case TK_M_DRIVER: | |
878 | case TK_M_WAITFOR: | |
879 | case TK_M_DEVLINK: | |
880 | case TK_M_NAME: | |
881 | case TK_M_KERNELS: | |
882 | case TK_M_SUBSYSTEMS: | |
883 | case TK_M_DRIVERS: | |
884 | case TK_M_TAGS: | |
885 | case TK_M_PROGRAM: | |
886 | case TK_M_IMPORT_FILE: | |
887 | case TK_M_IMPORT_PROG: | |
888 | case TK_M_IMPORT_DB: | |
889 | case TK_M_IMPORT_CMDLINE: | |
890 | case TK_M_IMPORT_PARENT: | |
891 | case TK_M_RESULT: | |
892 | case TK_A_OWNER: | |
893 | case TK_A_GROUP: | |
894 | case TK_A_MODE: | |
8a173387 | 895 | case TK_A_DEVLINK: |
912541b0 KS |
896 | case TK_A_NAME: |
897 | case TK_A_GOTO: | |
898 | case TK_M_TAG: | |
899 | case TK_A_TAG: | |
d6f116a7 | 900 | case TK_A_STATIC_NODE: |
915bf0f6 | 901 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
902 | break; |
903 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 904 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
905 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
906 | break; | |
907 | case TK_M_ENV: | |
908 | case TK_M_ATTR: | |
909 | case TK_M_ATTRS: | |
910 | case TK_A_ATTR: | |
911 | case TK_A_ENV: | |
c26547d6 | 912 | case TK_A_SECLABEL: |
912541b0 | 913 | attr = data; |
915bf0f6 KS |
914 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
915 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 916 | break; |
912541b0 | 917 | case TK_M_TEST: |
915bf0f6 | 918 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
919 | if (data != NULL) |
920 | token->key.mode = *(mode_t *)data; | |
921 | break; | |
922 | case TK_A_STRING_ESCAPE_NONE: | |
923 | case TK_A_STRING_ESCAPE_REPLACE: | |
924 | case TK_A_DB_PERSIST: | |
925 | break; | |
83cd6b75 | 926 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 927 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 928 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 929 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
930 | break; |
931 | case TK_A_INOTIFY_WATCH: | |
932 | case TK_A_DEVLINK_PRIO: | |
933 | token->key.devlink_prio = *(int *)data; | |
934 | break; | |
935 | case TK_A_OWNER_ID: | |
936 | token->key.uid = *(uid_t *)data; | |
937 | break; | |
938 | case TK_A_GROUP_ID: | |
939 | token->key.gid = *(gid_t *)data; | |
940 | break; | |
941 | case TK_A_MODE_ID: | |
942 | token->key.mode = *(mode_t *)data; | |
943 | break; | |
912541b0 KS |
944 | case TK_RULE: |
945 | case TK_M_PARENTS_MIN: | |
946 | case TK_M_PARENTS_MAX: | |
947 | case TK_M_MAX: | |
948 | case TK_END: | |
949 | case TK_UNSET: | |
9f6445e3 | 950 | log_error("wrong type %u", type); |
912541b0 KS |
951 | return -1; |
952 | } | |
953 | ||
954 | if (value != NULL && type < TK_M_MAX) { | |
955 | /* check if we need to split or call fnmatch() while matching rules */ | |
956 | enum string_glob_type glob; | |
957 | int has_split; | |
958 | int has_glob; | |
959 | ||
960 | has_split = (strchr(value, '|') != NULL); | |
e3e0314b | 961 | has_glob = string_is_glob(value); |
912541b0 KS |
962 | if (has_split && has_glob) { |
963 | glob = GL_SPLIT_GLOB; | |
964 | } else if (has_split) { | |
965 | glob = GL_SPLIT; | |
966 | } else if (has_glob) { | |
33502ffe | 967 | if (streq(value, "?*")) |
912541b0 KS |
968 | glob = GL_SOMETHING; |
969 | else | |
970 | glob = GL_GLOB; | |
971 | } else { | |
972 | glob = GL_PLAIN; | |
973 | } | |
974 | token->key.glob = glob; | |
975 | } | |
976 | ||
977 | if (value != NULL && type > TK_M_MAX) { | |
978 | /* check if assigned value has substitution chars */ | |
979 | if (value[0] == '[') | |
980 | token->key.subst = SB_SUBSYS; | |
981 | else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) | |
982 | token->key.subst = SB_FORMAT; | |
983 | else | |
984 | token->key.subst = SB_NONE; | |
985 | } | |
986 | ||
987 | if (attr != NULL) { | |
d6f116a7 | 988 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
989 | if (attr[0] == '[') |
990 | token->key.attrsubst = SB_SUBSYS; | |
991 | else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL) | |
992 | token->key.attrsubst = SB_FORMAT; | |
993 | else | |
994 | token->key.attrsubst = SB_NONE; | |
995 | } | |
996 | ||
997 | token->key.type = type; | |
998 | token->key.op = op; | |
999 | rule_tmp->token_cur++; | |
8fef0ff2 | 1000 | if (rule_tmp->token_cur >= ELEMENTSOF(rule_tmp->token)) { |
9f6445e3 | 1001 | log_error("temporary rule array too small"); |
912541b0 KS |
1002 | return -1; |
1003 | } | |
1004 | return 0; | |
6880b25d | 1005 | } |
e57e7bc1 | 1006 | |
9ec6e95b | 1007 | static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) { |
912541b0 KS |
1008 | unsigned int i; |
1009 | unsigned int start = 0; | |
1010 | unsigned int end = rule_tmp->token_cur; | |
1011 | ||
1012 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
1013 | enum token_type next_val = TK_UNSET; | |
1014 | unsigned int next_idx = 0; | |
1015 | unsigned int j; | |
1016 | ||
1017 | /* find smallest value */ | |
1018 | for (j = start; j < end; j++) { | |
1019 | if (rule_tmp->token[j].type == TK_UNSET) | |
1020 | continue; | |
1021 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
1022 | next_val = rule_tmp->token[j].type; | |
1023 | next_idx = j; | |
1024 | } | |
1025 | } | |
1026 | ||
1027 | /* add token and mark done */ | |
1028 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
1029 | return -1; | |
1030 | rule_tmp->token[next_idx].type = TK_UNSET; | |
1031 | ||
1032 | /* shrink range */ | |
1033 | if (next_idx == start) | |
1034 | start++; | |
1035 | if (next_idx+1 == end) | |
1036 | end--; | |
1037 | } | |
1038 | return 0; | |
724257d9 GKH |
1039 | } |
1040 | ||
6880b25d | 1041 | static int add_rule(struct udev_rules *rules, char *line, |
9ec6e95b | 1042 | const char *filename, unsigned int filename_off, unsigned int lineno) { |
912541b0 | 1043 | char *linepos; |
04a9d3a0 | 1044 | const char *attr; |
912541b0 KS |
1045 | struct rule_tmp rule_tmp; |
1046 | ||
29804cc1 | 1047 | memzero(&rule_tmp, sizeof(struct rule_tmp)); |
912541b0 KS |
1048 | rule_tmp.rules = rules; |
1049 | rule_tmp.rule.type = TK_RULE; | |
775f8b3c KS |
1050 | /* the offset in the rule is limited to unsigned short */ |
1051 | if (filename_off < USHRT_MAX) | |
1052 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
1053 | rule_tmp.rule.rule.filename_line = lineno; |
1054 | ||
1055 | linepos = line; | |
1056 | for (;;) { | |
1057 | char *key; | |
1058 | char *value; | |
1059 | enum operation_type op; | |
1060 | ||
e736cf35 | 1061 | if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) { |
3cf0f8f7 DR |
1062 | /* Avoid erroring on trailing whitespace. This is probably rare |
1063 | * so save the work for the error case instead of always trying | |
1064 | * to strip the trailing whitespace with strstrip(). */ | |
1065 | while (isblank(*linepos)) | |
1066 | linepos++; | |
1067 | ||
e736cf35 DR |
1068 | /* If we aren't at the end of the line, this is a parsing error. |
1069 | * Make a best effort to describe where the problem is. */ | |
1291bc89 ZJS |
1070 | if (*linepos != '\n') { |
1071 | char buf[2] = {linepos[1]}; | |
1072 | _cleanup_free_ char *tmp; | |
1073 | ||
1074 | tmp = cescape(buf); | |
85639427 | 1075 | log_error("invalid key/value pair in file %s on line %u, starting at character %tu ('%s')\n", |
1291bc89 ZJS |
1076 | filename, lineno, linepos - line + 1, tmp); |
1077 | if (linepos[1] == '#') | |
75716dd8 | 1078 | log_error("hint: comments can only start at beginning of line"); |
1291bc89 | 1079 | } |
912541b0 | 1080 | break; |
e736cf35 | 1081 | } |
912541b0 | 1082 | |
33502ffe | 1083 | if (streq(key, "ACTION")) { |
912541b0 | 1084 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1085 | log_error("invalid ACTION operation"); |
912541b0 KS |
1086 | goto invalid; |
1087 | } | |
1088 | rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); | |
1089 | continue; | |
1090 | } | |
1091 | ||
33502ffe | 1092 | if (streq(key, "DEVPATH")) { |
912541b0 | 1093 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1094 | log_error("invalid DEVPATH operation"); |
912541b0 KS |
1095 | goto invalid; |
1096 | } | |
1097 | rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); | |
1098 | continue; | |
1099 | } | |
1100 | ||
33502ffe | 1101 | if (streq(key, "KERNEL")) { |
912541b0 | 1102 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1103 | log_error("invalid KERNEL operation"); |
912541b0 KS |
1104 | goto invalid; |
1105 | } | |
1106 | rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); | |
1107 | continue; | |
1108 | } | |
1109 | ||
33502ffe | 1110 | if (streq(key, "SUBSYSTEM")) { |
912541b0 | 1111 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1112 | log_error("invalid SUBSYSTEM operation"); |
912541b0 KS |
1113 | goto invalid; |
1114 | } | |
1115 | /* bus, class, subsystem events should all be the same */ | |
33502ffe KS |
1116 | if (streq(value, "subsystem") || |
1117 | streq(value, "bus") || | |
1118 | streq(value, "class")) { | |
1119 | if (streq(value, "bus") || streq(value, "class")) | |
9f6445e3 | 1120 | log_error("'%s' must be specified as 'subsystem' " |
912541b0 KS |
1121 | "please fix it in %s:%u", value, filename, lineno); |
1122 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); | |
1123 | } else | |
1124 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); | |
1125 | continue; | |
1126 | } | |
1127 | ||
33502ffe | 1128 | if (streq(key, "DRIVER")) { |
912541b0 | 1129 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1130 | log_error("invalid DRIVER operation"); |
912541b0 KS |
1131 | goto invalid; |
1132 | } | |
1133 | rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); | |
1134 | continue; | |
1135 | } | |
1136 | ||
33502ffe | 1137 | if (startswith(key, "ATTR{")) { |
f8294e41 | 1138 | attr = get_key_attribute(rules->udev, key + strlen("ATTR")); |
912541b0 | 1139 | if (attr == NULL) { |
9f6445e3 | 1140 | log_error("error parsing ATTR attribute"); |
912541b0 KS |
1141 | goto invalid; |
1142 | } | |
8e3ba377 DH |
1143 | if (op == OP_REMOVE) { |
1144 | log_error("invalid ATTR operation"); | |
1145 | goto invalid; | |
1146 | } | |
912541b0 KS |
1147 | if (op < OP_MATCH_MAX) { |
1148 | rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); | |
1149 | } else { | |
1150 | rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); | |
1151 | } | |
1152 | continue; | |
1153 | } | |
1154 | ||
c26547d6 | 1155 | if (startswith(key, "SECLABEL{")) { |
f8294e41 | 1156 | attr = get_key_attribute(rules->udev, key + strlen("SECLABEL")); |
c26547d6 | 1157 | if (!attr) { |
9f6445e3 | 1158 | log_error("error parsing SECLABEL attribute"); |
c26547d6 KS |
1159 | goto invalid; |
1160 | } | |
8e3ba377 DH |
1161 | if (op == OP_REMOVE) { |
1162 | log_error("invalid SECLABEL operation"); | |
1163 | goto invalid; | |
1164 | } | |
c26547d6 KS |
1165 | |
1166 | rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr); | |
1167 | continue; | |
1168 | } | |
1169 | ||
33502ffe | 1170 | if (streq(key, "KERNELS")) { |
912541b0 | 1171 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1172 | log_error("invalid KERNELS operation"); |
912541b0 KS |
1173 | goto invalid; |
1174 | } | |
1175 | rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); | |
1176 | continue; | |
1177 | } | |
1178 | ||
33502ffe | 1179 | if (streq(key, "SUBSYSTEMS")) { |
912541b0 | 1180 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1181 | log_error("invalid SUBSYSTEMS operation"); |
912541b0 KS |
1182 | goto invalid; |
1183 | } | |
1184 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); | |
1185 | continue; | |
1186 | } | |
1187 | ||
33502ffe | 1188 | if (streq(key, "DRIVERS")) { |
912541b0 | 1189 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1190 | log_error("invalid DRIVERS operation"); |
912541b0 KS |
1191 | goto invalid; |
1192 | } | |
1193 | rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); | |
1194 | continue; | |
1195 | } | |
1196 | ||
33502ffe | 1197 | if (startswith(key, "ATTRS{")) { |
912541b0 | 1198 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1199 | log_error("invalid ATTRS operation"); |
912541b0 KS |
1200 | goto invalid; |
1201 | } | |
f8294e41 | 1202 | attr = get_key_attribute(rules->udev, key + strlen("ATTRS")); |
912541b0 | 1203 | if (attr == NULL) { |
9f6445e3 | 1204 | log_error("error parsing ATTRS attribute"); |
912541b0 KS |
1205 | goto invalid; |
1206 | } | |
33502ffe | 1207 | if (startswith(attr, "device/")) |
baa30fbc | 1208 | log_error("the 'device' link may not be available in a future kernel, " |
912541b0 KS |
1209 | "please fix it in %s:%u", filename, lineno); |
1210 | else if (strstr(attr, "../") != NULL) | |
baa30fbc | 1211 | log_error("do not reference parent sysfs directories directly, " |
912541b0 KS |
1212 | "it may break with a future kernel, please fix it in %s:%u", filename, lineno); |
1213 | rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); | |
1214 | continue; | |
1215 | } | |
1216 | ||
33502ffe | 1217 | if (streq(key, "TAGS")) { |
912541b0 | 1218 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1219 | log_error("invalid TAGS operation"); |
912541b0 KS |
1220 | goto invalid; |
1221 | } | |
1222 | rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL); | |
1223 | continue; | |
1224 | } | |
1225 | ||
33502ffe | 1226 | if (startswith(key, "ENV{")) { |
f8294e41 | 1227 | attr = get_key_attribute(rules->udev, key + strlen("ENV")); |
912541b0 | 1228 | if (attr == NULL) { |
9f6445e3 | 1229 | log_error("error parsing ENV attribute"); |
912541b0 KS |
1230 | goto invalid; |
1231 | } | |
8e3ba377 DH |
1232 | if (op == OP_REMOVE) { |
1233 | log_error("invalid ENV operation"); | |
1234 | goto invalid; | |
1235 | } | |
912541b0 KS |
1236 | if (op < OP_MATCH_MAX) { |
1237 | if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0) | |
1238 | goto invalid; | |
1239 | } else { | |
1240 | static const char *blacklist[] = { | |
1241 | "ACTION", | |
1242 | "SUBSYSTEM", | |
1243 | "DEVTYPE", | |
1244 | "MAJOR", | |
1245 | "MINOR", | |
1246 | "DRIVER", | |
1247 | "IFINDEX", | |
1248 | "DEVNAME", | |
1249 | "DEVLINKS", | |
1250 | "DEVPATH", | |
1251 | "TAGS", | |
1252 | }; | |
1253 | unsigned int i; | |
1254 | ||
395ea978 KS |
1255 | for (i = 0; i < ELEMENTSOF(blacklist); i++) { |
1256 | if (!streq(attr, blacklist[i])) | |
912541b0 | 1257 | continue; |
9f6445e3 | 1258 | log_error("invalid ENV attribute, '%s' can not be set %s:%u", attr, filename, lineno); |
395ea978 KS |
1259 | goto invalid; |
1260 | } | |
912541b0 KS |
1261 | if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0) |
1262 | goto invalid; | |
1263 | } | |
1264 | continue; | |
1265 | } | |
1266 | ||
33502ffe | 1267 | if (streq(key, "TAG")) { |
912541b0 KS |
1268 | if (op < OP_MATCH_MAX) |
1269 | rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); | |
1270 | else | |
1271 | rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); | |
1272 | continue; | |
1273 | } | |
1274 | ||
33502ffe | 1275 | if (streq(key, "PROGRAM")) { |
8e3ba377 DH |
1276 | if (op == OP_REMOVE) { |
1277 | log_error("invalid PROGRAM operation"); | |
1278 | goto invalid; | |
1279 | } | |
912541b0 KS |
1280 | rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
1281 | continue; | |
1282 | } | |
1283 | ||
33502ffe | 1284 | if (streq(key, "RESULT")) { |
912541b0 | 1285 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1286 | log_error("invalid RESULT operation"); |
912541b0 KS |
1287 | goto invalid; |
1288 | } | |
1289 | rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); | |
1290 | continue; | |
1291 | } | |
1292 | ||
33502ffe | 1293 | if (startswith(key, "IMPORT")) { |
f8294e41 | 1294 | attr = get_key_attribute(rules->udev, key + strlen("IMPORT")); |
912541b0 | 1295 | if (attr == NULL) { |
9f6445e3 | 1296 | log_error("IMPORT{} type missing, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1297 | continue; |
1298 | } | |
8e3ba377 DH |
1299 | if (op == OP_REMOVE) { |
1300 | log_error("invalid IMPORT operation"); | |
1301 | goto invalid; | |
1302 | } | |
33502ffe | 1303 | if (streq(attr, "program")) { |
912541b0 KS |
1304 | /* find known built-in command */ |
1305 | if (value[0] != '/') { | |
1306 | enum udev_builtin_cmd cmd; | |
1307 | ||
1308 | cmd = udev_builtin_lookup(value); | |
1309 | if (cmd < UDEV_BUILTIN_MAX) { | |
9f6445e3 | 1310 | log_debug("IMPORT found builtin '%s', replacing %s:%u", |
baa30fbc | 1311 | value, filename, lineno); |
912541b0 KS |
1312 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1313 | continue; | |
1314 | } | |
1315 | } | |
912541b0 | 1316 | rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1317 | } else if (streq(attr, "builtin")) { |
912541b0 KS |
1318 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1319 | ||
912541b0 KS |
1320 | if (cmd < UDEV_BUILTIN_MAX) |
1321 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); | |
1322 | else | |
9f6445e3 | 1323 | log_error("IMPORT{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1324 | } else if (streq(attr, "file")) { |
912541b0 | 1325 | rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
33502ffe | 1326 | } else if (streq(attr, "db")) { |
912541b0 | 1327 | rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
33502ffe | 1328 | } else if (streq(attr, "cmdline")) { |
912541b0 | 1329 | rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
33502ffe | 1330 | } else if (streq(attr, "parent")) { |
912541b0 | 1331 | rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
83cd6b75 | 1332 | } else |
9f6445e3 | 1333 | log_error("IMPORT{} unknown type, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1334 | continue; |
1335 | } | |
1336 | ||
33502ffe | 1337 | if (startswith(key, "TEST")) { |
912541b0 KS |
1338 | mode_t mode = 0; |
1339 | ||
1340 | if (op > OP_MATCH_MAX) { | |
9f6445e3 | 1341 | log_error("invalid TEST operation"); |
912541b0 KS |
1342 | goto invalid; |
1343 | } | |
f8294e41 | 1344 | attr = get_key_attribute(rules->udev, key + strlen("TEST")); |
912541b0 KS |
1345 | if (attr != NULL) { |
1346 | mode = strtol(attr, NULL, 8); | |
1347 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); | |
1348 | } else { | |
1349 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); | |
1350 | } | |
1351 | continue; | |
1352 | } | |
1353 | ||
33502ffe | 1354 | if (startswith(key, "RUN")) { |
f8294e41 | 1355 | attr = get_key_attribute(rules->udev, key + strlen("RUN")); |
83cd6b75 KS |
1356 | if (attr == NULL) |
1357 | attr = "program"; | |
8e3ba377 DH |
1358 | if (op == OP_REMOVE) { |
1359 | log_error("invalid RUN operation"); | |
1360 | goto invalid; | |
1361 | } | |
83cd6b75 | 1362 | |
33502ffe | 1363 | if (streq(attr, "builtin")) { |
83cd6b75 KS |
1364 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1365 | ||
1366 | if (cmd < UDEV_BUILTIN_MAX) | |
1367 | rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
1368 | else | |
ec3281d3 | 1369 | log_error("RUN{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1370 | } else if (streq(attr, "program")) { |
83cd6b75 KS |
1371 | enum udev_builtin_cmd cmd = UDEV_BUILTIN_MAX; |
1372 | ||
83cd6b75 KS |
1373 | rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
1374 | } else { | |
9f6445e3 | 1375 | log_error("RUN{} unknown type, ignoring RUN %s:%u", filename, lineno); |
83cd6b75 KS |
1376 | } |
1377 | ||
912541b0 KS |
1378 | continue; |
1379 | } | |
1380 | ||
33502ffe | 1381 | if (streq(key, "WAIT_FOR") || streq(key, "WAIT_FOR_SYSFS")) { |
8e3ba377 DH |
1382 | if (op == OP_REMOVE) { |
1383 | log_error("invalid WAIT_FOR/WAIT_FOR_SYSFS operation"); | |
1384 | goto invalid; | |
1385 | } | |
912541b0 KS |
1386 | rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL); |
1387 | continue; | |
1388 | } | |
1389 | ||
33502ffe | 1390 | if (streq(key, "LABEL")) { |
8e3ba377 DH |
1391 | if (op == OP_REMOVE) { |
1392 | log_error("invalid LABEL operation"); | |
1393 | goto invalid; | |
1394 | } | |
915bf0f6 | 1395 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 KS |
1396 | continue; |
1397 | } | |
1398 | ||
33502ffe | 1399 | if (streq(key, "GOTO")) { |
8e3ba377 DH |
1400 | if (op == OP_REMOVE) { |
1401 | log_error("invalid GOTO operation"); | |
1402 | goto invalid; | |
1403 | } | |
912541b0 KS |
1404 | rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
1405 | continue; | |
1406 | } | |
1407 | ||
33502ffe | 1408 | if (startswith(key, "NAME")) { |
8e3ba377 DH |
1409 | if (op == OP_REMOVE) { |
1410 | log_error("invalid NAME operation"); | |
1411 | goto invalid; | |
1412 | } | |
912541b0 KS |
1413 | if (op < OP_MATCH_MAX) { |
1414 | rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); | |
1415 | } else { | |
33502ffe | 1416 | if (streq(value, "%k")) { |
baa30fbc | 1417 | log_error("NAME=\"%%k\" is ignored, because it breaks kernel supplied names, " |
912541b0 KS |
1418 | "please remove it from %s:%u\n", filename, lineno); |
1419 | continue; | |
1420 | } | |
1421 | if (value[0] == '\0') { | |
baa30fbc KS |
1422 | log_debug("NAME=\"\" is ignored, because udev will not delete any device nodes, " |
1423 | "please remove it from %s:%u\n", filename, lineno); | |
912541b0 KS |
1424 | continue; |
1425 | } | |
1426 | rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1427 | } | |
1428 | rule_tmp.rule.rule.can_set_name = true; | |
1429 | continue; | |
1430 | } | |
1431 | ||
8a173387 | 1432 | if (streq(key, "SYMLINK")) { |
8e3ba377 DH |
1433 | if (op == OP_REMOVE) { |
1434 | log_error("invalid SYMLINK operation"); | |
1435 | goto invalid; | |
1436 | } | |
8a173387 | 1437 | if (op < OP_MATCH_MAX) |
912541b0 | 1438 | rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 KS |
1439 | else |
1440 | rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
912541b0 KS |
1441 | rule_tmp.rule.rule.can_set_name = true; |
1442 | continue; | |
1443 | } | |
1444 | ||
33502ffe | 1445 | if (streq(key, "OWNER")) { |
912541b0 KS |
1446 | uid_t uid; |
1447 | char *endptr; | |
1448 | ||
8e3ba377 DH |
1449 | if (op == OP_REMOVE) { |
1450 | log_error("invalid OWNER operation"); | |
1451 | goto invalid; | |
1452 | } | |
1453 | ||
912541b0 KS |
1454 | uid = strtoul(value, &endptr, 10); |
1455 | if (endptr[0] == '\0') { | |
1456 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1457 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1458 | uid = add_uid(rules, value); | |
1459 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1460 | } else if (rules->resolve_names >= 0) { | |
1461 | rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); | |
1462 | } | |
1463 | rule_tmp.rule.rule.can_set_name = true; | |
1464 | continue; | |
1465 | } | |
1466 | ||
33502ffe | 1467 | if (streq(key, "GROUP")) { |
912541b0 KS |
1468 | gid_t gid; |
1469 | char *endptr; | |
1470 | ||
8e3ba377 DH |
1471 | if (op == OP_REMOVE) { |
1472 | log_error("invalid GROUP operation"); | |
1473 | goto invalid; | |
1474 | } | |
1475 | ||
912541b0 KS |
1476 | gid = strtoul(value, &endptr, 10); |
1477 | if (endptr[0] == '\0') { | |
1478 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1479 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1480 | gid = add_gid(rules, value); | |
1481 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1482 | } else if (rules->resolve_names >= 0) { | |
1483 | rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); | |
1484 | } | |
1485 | rule_tmp.rule.rule.can_set_name = true; | |
1486 | continue; | |
1487 | } | |
1488 | ||
33502ffe | 1489 | if (streq(key, "MODE")) { |
912541b0 KS |
1490 | mode_t mode; |
1491 | char *endptr; | |
1492 | ||
8e3ba377 DH |
1493 | if (op == OP_REMOVE) { |
1494 | log_error("invalid MODE operation"); | |
1495 | goto invalid; | |
1496 | } | |
1497 | ||
912541b0 KS |
1498 | mode = strtol(value, &endptr, 8); |
1499 | if (endptr[0] == '\0') | |
1500 | rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1501 | else | |
1502 | rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); | |
1503 | rule_tmp.rule.rule.can_set_name = true; | |
1504 | continue; | |
1505 | } | |
1506 | ||
33502ffe | 1507 | if (streq(key, "OPTIONS")) { |
912541b0 KS |
1508 | const char *pos; |
1509 | ||
8e3ba377 DH |
1510 | if (op == OP_REMOVE) { |
1511 | log_error("invalid OPTIONS operation"); | |
1512 | goto invalid; | |
1513 | } | |
1514 | ||
912541b0 KS |
1515 | pos = strstr(value, "link_priority="); |
1516 | if (pos != NULL) { | |
1517 | int prio = atoi(&pos[strlen("link_priority=")]); | |
1518 | ||
1519 | rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); | |
912541b0 KS |
1520 | } |
1521 | ||
9f20a8a3 | 1522 | pos = strstr(value, "string_escape="); |
912541b0 KS |
1523 | if (pos != NULL) { |
1524 | pos = &pos[strlen("string_escape=")]; | |
33502ffe | 1525 | if (startswith(pos, "none")) |
912541b0 | 1526 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1527 | else if (startswith(pos, "replace")) |
912541b0 KS |
1528 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1529 | } | |
1530 | ||
1531 | pos = strstr(value, "db_persist"); | |
1532 | if (pos != NULL) | |
1533 | rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); | |
1534 | ||
1535 | pos = strstr(value, "nowatch"); | |
1536 | if (pos != NULL) { | |
1537 | const int off = 0; | |
1538 | ||
1539 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off); | |
912541b0 KS |
1540 | } else { |
1541 | pos = strstr(value, "watch"); | |
1542 | if (pos != NULL) { | |
1543 | const int on = 1; | |
1544 | ||
1545 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on); | |
912541b0 KS |
1546 | } |
1547 | } | |
1548 | ||
1549 | pos = strstr(value, "static_node="); | |
1550 | if (pos != NULL) { | |
1551 | rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL); | |
1552 | rule_tmp.rule.rule.has_static_node = true; | |
1553 | } | |
1554 | ||
1555 | continue; | |
1556 | } | |
1557 | ||
9f6445e3 | 1558 | log_error("unknown key '%s' in %s:%u", key, filename, lineno); |
912541b0 KS |
1559 | goto invalid; |
1560 | } | |
1561 | ||
1562 | /* add rule token */ | |
1563 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; | |
1564 | if (add_token(rules, &rule_tmp.rule) != 0) | |
1565 | goto invalid; | |
1566 | ||
1567 | /* add tokens to list, sorted by type */ | |
1568 | if (sort_token(rules, &rule_tmp) != 0) | |
1569 | goto invalid; | |
1570 | ||
1571 | return 0; | |
c7521974 | 1572 | invalid: |
9f6445e3 | 1573 | log_error("invalid rule '%s:%u'", filename, lineno); |
912541b0 | 1574 | return -1; |
c7521974 KS |
1575 | } |
1576 | ||
9ec6e95b | 1577 | static int parse_file(struct udev_rules *rules, const char *filename) { |
6c8aaf0c | 1578 | _cleanup_fclose_ FILE *f = NULL; |
912541b0 | 1579 | unsigned int first_token; |
775f8b3c | 1580 | unsigned int filename_off; |
912541b0 KS |
1581 | char line[UTIL_LINE_SIZE]; |
1582 | int line_nr = 0; | |
1583 | unsigned int i; | |
1584 | ||
ed88bcfb ZJS |
1585 | f = fopen(filename, "re"); |
1586 | if (!f) { | |
1587 | if (errno == ENOENT) | |
1588 | return 0; | |
1589 | else | |
1590 | return -errno; | |
775f8b3c | 1591 | } |
912541b0 | 1592 | |
ed88bcfb ZJS |
1593 | if (null_or_empty_fd(fileno(f))) { |
1594 | log_debug("Skipping empty file: %s", filename); | |
1595 | return 0; | |
1596 | } else | |
1597 | log_debug("Reading rules file: %s", filename); | |
912541b0 KS |
1598 | |
1599 | first_token = rules->token_cur; | |
915bf0f6 | 1600 | filename_off = rules_add_string(rules, filename); |
912541b0 KS |
1601 | |
1602 | while (fgets(line, sizeof(line), f) != NULL) { | |
1603 | char *key; | |
1604 | size_t len; | |
1605 | ||
1606 | /* skip whitespace */ | |
1607 | line_nr++; | |
1608 | key = line; | |
1609 | while (isspace(key[0])) | |
1610 | key++; | |
1611 | ||
1612 | /* comment */ | |
1613 | if (key[0] == '#') | |
1614 | continue; | |
1615 | ||
1616 | len = strlen(line); | |
1617 | if (len < 3) | |
1618 | continue; | |
1619 | ||
1620 | /* continue reading if backslash+newline is found */ | |
1621 | while (line[len-2] == '\\') { | |
1622 | if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) | |
1623 | break; | |
1624 | if (strlen(&line[len-2]) < 2) | |
1625 | break; | |
1626 | line_nr++; | |
1627 | len = strlen(line); | |
1628 | } | |
1629 | ||
1630 | if (len+1 >= sizeof(line)) { | |
9f6445e3 | 1631 | log_error("line too long '%s':%u, ignored", filename, line_nr); |
912541b0 KS |
1632 | continue; |
1633 | } | |
1634 | add_rule(rules, key, filename, filename_off, line_nr); | |
1635 | } | |
912541b0 KS |
1636 | |
1637 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1638 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1639 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1640 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
912541b0 KS |
1641 | unsigned int j; |
1642 | ||
1643 | for (j = i+1; j < rules->token_cur; j++) { | |
1644 | if (rules->tokens[j].type != TK_RULE) | |
1645 | continue; | |
1646 | if (rules->tokens[j].rule.label_off == 0) | |
1647 | continue; | |
915bf0f6 | 1648 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1649 | continue; |
1650 | rules->tokens[i].key.rule_goto = j; | |
1651 | break; | |
1652 | } | |
1653 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1654 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1655 | } |
1656 | } | |
1657 | return 0; | |
c7521974 KS |
1658 | } |
1659 | ||
9ec6e95b | 1660 | struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) { |
912541b0 KS |
1661 | struct udev_rules *rules; |
1662 | struct udev_list file_list; | |
912541b0 | 1663 | struct token end_token; |
775f8b3c KS |
1664 | char **files, **f; |
1665 | int r; | |
912541b0 | 1666 | |
955d98c9 | 1667 | rules = new0(struct udev_rules, 1); |
912541b0 KS |
1668 | if (rules == NULL) |
1669 | return NULL; | |
1670 | rules->udev = udev; | |
1671 | rules->resolve_names = resolve_names; | |
1672 | udev_list_init(udev, &file_list, true); | |
1673 | ||
1674 | /* init token array and string buffer */ | |
1675 | rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); | |
0820a4f0 VP |
1676 | if (rules->tokens == NULL) |
1677 | return udev_rules_unref(rules); | |
912541b0 KS |
1678 | rules->token_max = PREALLOC_TOKEN; |
1679 | ||
915bf0f6 KS |
1680 | rules->strbuf = strbuf_new(); |
1681 | if (!rules->strbuf) | |
0820a4f0 VP |
1682 | return udev_rules_unref(rules); |
1683 | ||
3b8c1cb0 KS |
1684 | udev_rules_check_timestamp(rules); |
1685 | ||
2ad8416d | 1686 | r = conf_files_list_strv(&files, ".rules", NULL, rules_dirs); |
775f8b3c | 1687 | if (r < 0) { |
da927ba9 | 1688 | log_error_errno(r, "failed to enumerate rules files: %m"); |
0820a4f0 | 1689 | return udev_rules_unref(rules); |
912541b0 KS |
1690 | } |
1691 | ||
775f8b3c KS |
1692 | /* |
1693 | * The offset value in the rules strct is limited; add all | |
1694 | * rules file names to the beginning of the string buffer. | |
1695 | */ | |
1696 | STRV_FOREACH(f, files) | |
915bf0f6 | 1697 | rules_add_string(rules, *f); |
912541b0 | 1698 | |
775f8b3c KS |
1699 | STRV_FOREACH(f, files) |
1700 | parse_file(rules, *f); | |
1701 | ||
1702 | strv_free(files); | |
912541b0 | 1703 | |
29804cc1 | 1704 | memzero(&end_token, sizeof(struct token)); |
912541b0 KS |
1705 | end_token.type = TK_END; |
1706 | add_token(rules, &end_token); | |
9f6445e3 | 1707 | log_debug("rules contain %zu bytes tokens (%u * %zu bytes), %zu bytes strings", |
915bf0f6 | 1708 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1709 | |
915bf0f6 | 1710 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1711 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1712 | rules->strbuf->in_count, rules->strbuf->in_len, |
1713 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1714 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1715 | |
1716 | /* cleanup uid/gid cache */ | |
1717 | free(rules->uids); | |
1718 | rules->uids = NULL; | |
1719 | rules->uids_cur = 0; | |
1720 | rules->uids_max = 0; | |
1721 | free(rules->gids); | |
1722 | rules->gids = NULL; | |
1723 | rules->gids_cur = 0; | |
1724 | rules->gids_max = 0; | |
1725 | ||
1726 | dump_rules(rules); | |
1727 | return rules; | |
c7521974 KS |
1728 | } |
1729 | ||
9ec6e95b | 1730 | struct udev_rules *udev_rules_unref(struct udev_rules *rules) { |
912541b0 KS |
1731 | if (rules == NULL) |
1732 | return NULL; | |
1733 | free(rules->tokens); | |
915bf0f6 | 1734 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1735 | free(rules->uids); |
1736 | free(rules->gids); | |
1737 | free(rules); | |
1738 | return NULL; | |
c7521974 | 1739 | } |
6880b25d | 1740 | |
9ec6e95b | 1741 | bool udev_rules_check_timestamp(struct udev_rules *rules) { |
5c11fbe3 KS |
1742 | if (!rules) |
1743 | return false; | |
1744 | ||
2ad8416d | 1745 | return paths_check_timestamp(rules_dirs, &rules->dirs_ts_usec, true); |
6ada823a KS |
1746 | } |
1747 | ||
9ec6e95b | 1748 | static int match_key(struct udev_rules *rules, struct token *token, const char *val) { |
915bf0f6 | 1749 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1750 | char *pos; |
1751 | bool match = false; | |
1752 | ||
1753 | if (val == NULL) | |
1754 | val = ""; | |
1755 | ||
1756 | switch (token->key.glob) { | |
1757 | case GL_PLAIN: | |
33502ffe | 1758 | match = (streq(key_value, val)); |
912541b0 KS |
1759 | break; |
1760 | case GL_GLOB: | |
1761 | match = (fnmatch(key_value, val, 0) == 0); | |
1762 | break; | |
1763 | case GL_SPLIT: | |
1764 | { | |
33502ffe | 1765 | const char *s; |
912541b0 KS |
1766 | size_t len; |
1767 | ||
915bf0f6 | 1768 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1769 | len = strlen(val); |
1770 | for (;;) { | |
1771 | const char *next; | |
1772 | ||
33502ffe | 1773 | next = strchr(s, '|'); |
912541b0 | 1774 | if (next != NULL) { |
33502ffe | 1775 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1776 | |
641906e9 | 1777 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1778 | if (match) |
1779 | break; | |
1780 | } else { | |
33502ffe | 1781 | match = (streq(s, val)); |
912541b0 KS |
1782 | break; |
1783 | } | |
33502ffe | 1784 | s = &next[1]; |
912541b0 KS |
1785 | } |
1786 | break; | |
1787 | } | |
1788 | case GL_SPLIT_GLOB: | |
1789 | { | |
1790 | char value[UTIL_PATH_SIZE]; | |
1791 | ||
d5a89d7d | 1792 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 KS |
1793 | key_value = value; |
1794 | while (key_value != NULL) { | |
1795 | pos = strchr(key_value, '|'); | |
1796 | if (pos != NULL) { | |
1797 | pos[0] = '\0'; | |
1798 | pos = &pos[1]; | |
1799 | } | |
912541b0 KS |
1800 | match = (fnmatch(key_value, val, 0) == 0); |
1801 | if (match) | |
1802 | break; | |
1803 | key_value = pos; | |
1804 | } | |
1805 | break; | |
1806 | } | |
1807 | case GL_SOMETHING: | |
1808 | match = (val[0] != '\0'); | |
1809 | break; | |
1810 | case GL_UNSET: | |
1811 | return -1; | |
1812 | } | |
1813 | ||
baa30fbc | 1814 | if (match && (token->key.op == OP_MATCH)) |
912541b0 | 1815 | return 0; |
baa30fbc | 1816 | if (!match && (token->key.op == OP_NOMATCH)) |
912541b0 | 1817 | return 0; |
912541b0 | 1818 | return -1; |
6880b25d KS |
1819 | } |
1820 | ||
9ec6e95b | 1821 | static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur) { |
912541b0 KS |
1822 | const char *name; |
1823 | char nbuf[UTIL_NAME_SIZE]; | |
1824 | const char *value; | |
1825 | char vbuf[UTIL_NAME_SIZE]; | |
1826 | size_t len; | |
1827 | ||
915bf0f6 | 1828 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1829 | switch (cur->key.attrsubst) { |
1830 | case SB_FORMAT: | |
1831 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf)); | |
1832 | name = nbuf; | |
1833 | /* fall through */ | |
1834 | case SB_NONE: | |
1835 | value = udev_device_get_sysattr_value(dev, name); | |
1836 | if (value == NULL) | |
1837 | return -1; | |
1838 | break; | |
1839 | case SB_SUBSYS: | |
1840 | if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0) | |
1841 | return -1; | |
1842 | value = vbuf; | |
1843 | break; | |
1844 | default: | |
1845 | return -1; | |
1846 | } | |
1847 | ||
1848 | /* remove trailing whitespace, if not asked to match for it */ | |
1849 | len = strlen(value); | |
1850 | if (len > 0 && isspace(value[len-1])) { | |
1851 | const char *key_value; | |
1852 | size_t klen; | |
1853 | ||
915bf0f6 | 1854 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1855 | klen = strlen(key_value); |
1856 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1857 | if (value != vbuf) { | |
d5a89d7d | 1858 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1859 | value = vbuf; |
1860 | } | |
1861 | while (len > 0 && isspace(vbuf[--len])) | |
1862 | vbuf[len] = '\0'; | |
912541b0 KS |
1863 | } |
1864 | } | |
1865 | ||
1866 | return match_key(rules, cur, value); | |
6880b25d KS |
1867 | } |
1868 | ||
1869 | enum escape_type { | |
912541b0 KS |
1870 | ESCAPE_UNSET, |
1871 | ESCAPE_NONE, | |
1872 | ESCAPE_REPLACE, | |
6880b25d KS |
1873 | }; |
1874 | ||
dd5eddd2 KS |
1875 | int udev_rules_apply_to_event(struct udev_rules *rules, |
1876 | struct udev_event *event, | |
1877 | usec_t timeout_usec, | |
67117413 | 1878 | usec_t timeout_warn_usec, |
adeba500 | 1879 | struct udev_list *properties_list, |
dd5eddd2 | 1880 | const sigset_t *sigmask) { |
912541b0 KS |
1881 | struct token *cur; |
1882 | struct token *rule; | |
1883 | enum escape_type esc = ESCAPE_UNSET; | |
1884 | bool can_set_name; | |
1885 | ||
1886 | if (rules->tokens == NULL) | |
1887 | return -1; | |
1888 | ||
33502ffe | 1889 | can_set_name = ((!streq(udev_device_get_action(event->dev), "remove")) && |
912541b0 KS |
1890 | (major(udev_device_get_devnum(event->dev)) > 0 || |
1891 | udev_device_get_ifindex(event->dev) > 0)); | |
1892 | ||
1893 | /* loop through token list, match, run actions or forward to next rule */ | |
1894 | cur = &rules->tokens[0]; | |
1895 | rule = cur; | |
1896 | for (;;) { | |
1897 | dump_token(rules, cur); | |
1898 | switch (cur->type) { | |
1899 | case TK_RULE: | |
1900 | /* current rule */ | |
1901 | rule = cur; | |
1902 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1903 | if (!can_set_name && rule->rule.can_set_name) | |
1904 | goto nomatch; | |
1905 | esc = ESCAPE_UNSET; | |
1906 | break; | |
1907 | case TK_M_ACTION: | |
1908 | if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0) | |
1909 | goto nomatch; | |
1910 | break; | |
1911 | case TK_M_DEVPATH: | |
1912 | if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0) | |
1913 | goto nomatch; | |
1914 | break; | |
1915 | case TK_M_KERNEL: | |
1916 | if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0) | |
1917 | goto nomatch; | |
1918 | break; | |
1919 | case TK_M_DEVLINK: { | |
912541b0 KS |
1920 | struct udev_list_entry *list_entry; |
1921 | bool match = false; | |
1922 | ||
1923 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { | |
1924 | const char *devlink; | |
1925 | ||
4cb72937 | 1926 | devlink = udev_list_entry_get_name(list_entry) + strlen("/dev/"); |
912541b0 KS |
1927 | if (match_key(rules, cur, devlink) == 0) { |
1928 | match = true; | |
1929 | break; | |
1930 | } | |
1931 | } | |
1932 | if (!match) | |
1933 | goto nomatch; | |
1934 | break; | |
1935 | } | |
1936 | case TK_M_NAME: | |
1937 | if (match_key(rules, cur, event->name) != 0) | |
1938 | goto nomatch; | |
1939 | break; | |
1940 | case TK_M_ENV: { | |
915bf0f6 | 1941 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1942 | const char *value; |
1943 | ||
1944 | value = udev_device_get_property_value(event->dev, key_name); | |
adeba500 KS |
1945 | |
1946 | /* check global properties */ | |
1947 | if (!value && properties_list) { | |
1948 | struct udev_list_entry *list_entry; | |
1949 | ||
1950 | list_entry = udev_list_get_entry(properties_list); | |
1951 | list_entry = udev_list_entry_get_by_name(list_entry, key_name); | |
1952 | if (list_entry != NULL) | |
1953 | value = udev_list_entry_get_value(list_entry); | |
1954 | } | |
1955 | ||
1956 | if (!value) | |
912541b0 | 1957 | value = ""; |
912541b0 KS |
1958 | if (match_key(rules, cur, value)) |
1959 | goto nomatch; | |
1960 | break; | |
1961 | } | |
1962 | case TK_M_TAG: { | |
1963 | struct udev_list_entry *list_entry; | |
1964 | bool match = false; | |
1965 | ||
1966 | udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) { | |
915bf0f6 | 1967 | if (streq(rules_str(rules, cur->key.value_off), udev_list_entry_get_name(list_entry))) { |
912541b0 KS |
1968 | match = true; |
1969 | break; | |
1970 | } | |
1971 | } | |
1972 | if (!match && (cur->key.op != OP_NOMATCH)) | |
1973 | goto nomatch; | |
1974 | break; | |
1975 | } | |
1976 | case TK_M_SUBSYSTEM: | |
1977 | if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0) | |
1978 | goto nomatch; | |
1979 | break; | |
1980 | case TK_M_DRIVER: | |
1981 | if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0) | |
1982 | goto nomatch; | |
1983 | break; | |
1984 | case TK_M_WAITFOR: { | |
1985 | char filename[UTIL_PATH_SIZE]; | |
1986 | int found; | |
1987 | ||
915bf0f6 | 1988 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename)); |
912541b0 KS |
1989 | found = (wait_for_file(event->dev, filename, 10) == 0); |
1990 | if (!found && (cur->key.op != OP_NOMATCH)) | |
1991 | goto nomatch; | |
1992 | break; | |
1993 | } | |
1994 | case TK_M_ATTR: | |
1995 | if (match_attr(rules, event->dev, event, cur) != 0) | |
1996 | goto nomatch; | |
1997 | break; | |
1998 | case TK_M_KERNELS: | |
1999 | case TK_M_SUBSYSTEMS: | |
2000 | case TK_M_DRIVERS: | |
2001 | case TK_M_ATTRS: | |
2002 | case TK_M_TAGS: { | |
2003 | struct token *next; | |
2004 | ||
2005 | /* get whole sequence of parent matches */ | |
2006 | next = cur; | |
2007 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
2008 | next++; | |
2009 | ||
2010 | /* loop over parents */ | |
2011 | event->dev_parent = event->dev; | |
2012 | for (;;) { | |
2013 | struct token *key; | |
2014 | ||
912541b0 KS |
2015 | /* loop over sequence of parent match keys */ |
2016 | for (key = cur; key < next; key++ ) { | |
2017 | dump_token(rules, key); | |
2018 | switch(key->type) { | |
2019 | case TK_M_KERNELS: | |
2020 | if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0) | |
2021 | goto try_parent; | |
2022 | break; | |
2023 | case TK_M_SUBSYSTEMS: | |
2024 | if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0) | |
2025 | goto try_parent; | |
2026 | break; | |
2027 | case TK_M_DRIVERS: | |
2028 | if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0) | |
2029 | goto try_parent; | |
2030 | break; | |
2031 | case TK_M_ATTRS: | |
2032 | if (match_attr(rules, event->dev_parent, event, key) != 0) | |
2033 | goto try_parent; | |
2034 | break; | |
2035 | case TK_M_TAGS: { | |
915bf0f6 | 2036 | bool match = udev_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
2037 | |
2038 | if (match && key->key.op == OP_NOMATCH) | |
2039 | goto try_parent; | |
2040 | if (!match && key->key.op == OP_MATCH) | |
2041 | goto try_parent; | |
2042 | break; | |
2043 | } | |
2044 | default: | |
2045 | goto nomatch; | |
2046 | } | |
912541b0 | 2047 | } |
912541b0 KS |
2048 | break; |
2049 | ||
2050 | try_parent: | |
2051 | event->dev_parent = udev_device_get_parent(event->dev_parent); | |
2052 | if (event->dev_parent == NULL) | |
2053 | goto nomatch; | |
2054 | } | |
2055 | /* move behind our sequence of parent match keys */ | |
2056 | cur = next; | |
2057 | continue; | |
2058 | } | |
2059 | case TK_M_TEST: { | |
2060 | char filename[UTIL_PATH_SIZE]; | |
2061 | struct stat statbuf; | |
2062 | int match; | |
2063 | ||
915bf0f6 | 2064 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename)); |
912541b0 KS |
2065 | if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) { |
2066 | if (filename[0] != '/') { | |
2067 | char tmp[UTIL_PATH_SIZE]; | |
2068 | ||
d5a89d7d KS |
2069 | strscpy(tmp, sizeof(tmp), filename); |
2070 | strscpyl(filename, sizeof(filename), | |
912541b0 KS |
2071 | udev_device_get_syspath(event->dev), "/", tmp, NULL); |
2072 | } | |
2073 | } | |
2074 | attr_subst_subdir(filename, sizeof(filename)); | |
2075 | ||
2076 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 2077 | if (match && cur->key.mode > 0) |
912541b0 | 2078 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
2079 | if (match && cur->key.op == OP_NOMATCH) |
2080 | goto nomatch; | |
2081 | if (!match && cur->key.op == OP_MATCH) | |
2082 | goto nomatch; | |
2083 | break; | |
2084 | } | |
912541b0 KS |
2085 | case TK_M_PROGRAM: { |
2086 | char program[UTIL_PATH_SIZE]; | |
2087 | char **envp; | |
209b031e | 2088 | char result[UTIL_LINE_SIZE]; |
912541b0 KS |
2089 | |
2090 | free(event->program_result); | |
2091 | event->program_result = NULL; | |
915bf0f6 | 2092 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program)); |
912541b0 | 2093 | envp = udev_device_get_properties_envp(event->dev); |
9f6445e3 | 2094 | log_debug("PROGRAM '%s' %s:%u", |
baa30fbc | 2095 | program, |
915bf0f6 | 2096 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2097 | rule->rule.filename_line); |
912541b0 | 2098 | |
67117413 | 2099 | if (udev_event_spawn(event, timeout_usec, timeout_warn_usec, program, envp, sigmask, result, sizeof(result)) < 0) { |
912541b0 KS |
2100 | if (cur->key.op != OP_NOMATCH) |
2101 | goto nomatch; | |
2102 | } else { | |
2103 | int count; | |
2104 | ||
2105 | util_remove_trailing_chars(result, '\n'); | |
2106 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2107 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); | |
2108 | if (count > 0) | |
9f6445e3 | 2109 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2110 | } |
2111 | event->program_result = strdup(result); | |
912541b0 KS |
2112 | if (cur->key.op == OP_NOMATCH) |
2113 | goto nomatch; | |
2114 | } | |
2115 | break; | |
2116 | } | |
2117 | case TK_M_IMPORT_FILE: { | |
2118 | char import[UTIL_PATH_SIZE]; | |
2119 | ||
915bf0f6 | 2120 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2121 | if (import_file_into_properties(event->dev, import) != 0) |
2122 | if (cur->key.op != OP_NOMATCH) | |
2123 | goto nomatch; | |
2124 | break; | |
2125 | } | |
2126 | case TK_M_IMPORT_PROG: { | |
2127 | char import[UTIL_PATH_SIZE]; | |
2128 | ||
915bf0f6 | 2129 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
9f6445e3 | 2130 | log_debug("IMPORT '%s' %s:%u", |
baa30fbc | 2131 | import, |
915bf0f6 | 2132 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2133 | rule->rule.filename_line); |
912541b0 | 2134 | |
67117413 | 2135 | if (import_program_into_properties(event, timeout_usec, timeout_warn_usec, import, sigmask) != 0) |
912541b0 KS |
2136 | if (cur->key.op != OP_NOMATCH) |
2137 | goto nomatch; | |
2138 | break; | |
2139 | } | |
2140 | case TK_M_IMPORT_BUILTIN: { | |
2141 | char command[UTIL_PATH_SIZE]; | |
2142 | ||
2143 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
2144 | /* check if we ran already */ | |
2145 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
9f6445e3 | 2146 | log_debug("IMPORT builtin skip '%s' %s:%u", |
baa30fbc | 2147 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2148 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2149 | rule->rule.filename_line); |
912541b0 KS |
2150 | /* return the result from earlier run */ |
2151 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
2152 | if (cur->key.op != OP_NOMATCH) | |
2153 | goto nomatch; | |
2154 | break; | |
2155 | } | |
2156 | /* mark as ran */ | |
2157 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2158 | } | |
2159 | ||
915bf0f6 | 2160 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command)); |
9f6445e3 | 2161 | log_debug("IMPORT builtin '%s' %s:%u", |
baa30fbc | 2162 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2163 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2164 | rule->rule.filename_line); |
912541b0 KS |
2165 | |
2166 | if (udev_builtin_run(event->dev, cur->key.builtin_cmd, command, false) != 0) { | |
2167 | /* remember failure */ | |
9f6445e3 | 2168 | log_debug("IMPORT builtin '%s' returned non-zero", |
baa30fbc | 2169 | udev_builtin_name(cur->key.builtin_cmd)); |
912541b0 KS |
2170 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2171 | if (cur->key.op != OP_NOMATCH) | |
2172 | goto nomatch; | |
2173 | } | |
2174 | break; | |
2175 | } | |
2176 | case TK_M_IMPORT_DB: { | |
915bf0f6 | 2177 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2178 | const char *value; |
2179 | ||
2180 | value = udev_device_get_property_value(event->dev_db, key); | |
2181 | if (value != NULL) { | |
2182 | struct udev_list_entry *entry; | |
2183 | ||
2184 | entry = udev_device_add_property(event->dev, key, value); | |
2185 | udev_list_entry_set_num(entry, true); | |
2186 | } else { | |
2187 | if (cur->key.op != OP_NOMATCH) | |
2188 | goto nomatch; | |
2189 | } | |
2190 | break; | |
2191 | } | |
2192 | case TK_M_IMPORT_CMDLINE: { | |
2193 | FILE *f; | |
2194 | bool imported = false; | |
2195 | ||
47ef94ac | 2196 | f = fopen("/proc/cmdline", "re"); |
912541b0 KS |
2197 | if (f != NULL) { |
2198 | char cmdline[4096]; | |
2199 | ||
2200 | if (fgets(cmdline, sizeof(cmdline), f) != NULL) { | |
915bf0f6 | 2201 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2202 | char *pos; |
2203 | ||
2204 | pos = strstr(cmdline, key); | |
2205 | if (pos != NULL) { | |
2206 | struct udev_list_entry *entry; | |
2207 | ||
2208 | pos += strlen(key); | |
2209 | if (pos[0] == '\0' || isspace(pos[0])) { | |
2210 | /* we import simple flags as 'FLAG=1' */ | |
2211 | entry = udev_device_add_property(event->dev, key, "1"); | |
2212 | udev_list_entry_set_num(entry, true); | |
2213 | imported = true; | |
2214 | } else if (pos[0] == '=') { | |
2215 | const char *value; | |
2216 | ||
2217 | pos++; | |
2218 | value = pos; | |
2219 | while (pos[0] != '\0' && !isspace(pos[0])) | |
2220 | pos++; | |
2221 | pos[0] = '\0'; | |
2222 | entry = udev_device_add_property(event->dev, key, value); | |
2223 | udev_list_entry_set_num(entry, true); | |
2224 | imported = true; | |
2225 | } | |
2226 | } | |
2227 | } | |
2228 | fclose(f); | |
2229 | } | |
2230 | if (!imported && cur->key.op != OP_NOMATCH) | |
2231 | goto nomatch; | |
2232 | break; | |
2233 | } | |
2234 | case TK_M_IMPORT_PARENT: { | |
2235 | char import[UTIL_PATH_SIZE]; | |
2236 | ||
915bf0f6 | 2237 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2238 | if (import_parent_into_properties(event->dev, import) != 0) |
2239 | if (cur->key.op != OP_NOMATCH) | |
2240 | goto nomatch; | |
2241 | break; | |
2242 | } | |
2243 | case TK_M_RESULT: | |
2244 | if (match_key(rules, cur, event->program_result) != 0) | |
2245 | goto nomatch; | |
2246 | break; | |
2247 | case TK_A_STRING_ESCAPE_NONE: | |
2248 | esc = ESCAPE_NONE; | |
2249 | break; | |
2250 | case TK_A_STRING_ESCAPE_REPLACE: | |
2251 | esc = ESCAPE_REPLACE; | |
2252 | break; | |
2253 | case TK_A_DB_PERSIST: | |
2254 | udev_device_set_db_persist(event->dev); | |
2255 | break; | |
2256 | case TK_A_INOTIFY_WATCH: | |
2257 | if (event->inotify_watch_final) | |
2258 | break; | |
2259 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2260 | event->inotify_watch_final = true; | |
2261 | event->inotify_watch = cur->key.watch; | |
2262 | break; | |
2263 | case TK_A_DEVLINK_PRIO: | |
2264 | udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio); | |
2265 | break; | |
2266 | case TK_A_OWNER: { | |
2267 | char owner[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2268 | const char *ow = owner; |
2269 | int r; | |
912541b0 KS |
2270 | |
2271 | if (event->owner_final) | |
2272 | break; | |
2273 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2274 | event->owner_final = true; | |
915bf0f6 | 2275 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner)); |
1edefa4f | 2276 | event->owner_set = true; |
23bf8dd7 TG |
2277 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL); |
2278 | if (r < 0) { | |
2279 | if (r == -ENOENT || r == -ESRCH) | |
00b06165 | 2280 | log_error("specified user '%s' unknown\n", owner); |
23bf8dd7 | 2281 | else |
00b06165 | 2282 | log_error("error resolving user '%s': %s\n", owner, strerror(-r)); |
23bf8dd7 TG |
2283 | |
2284 | event->uid = 0; | |
2285 | } | |
9f6445e3 | 2286 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2287 | event->uid, |
915bf0f6 | 2288 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2289 | rule->rule.filename_line); |
912541b0 KS |
2290 | break; |
2291 | } | |
2292 | case TK_A_GROUP: { | |
2293 | char group[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2294 | const char *gr = group; |
2295 | int r; | |
912541b0 KS |
2296 | |
2297 | if (event->group_final) | |
2298 | break; | |
2299 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2300 | event->group_final = true; | |
915bf0f6 | 2301 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group)); |
1edefa4f | 2302 | event->group_set = true; |
23bf8dd7 TG |
2303 | r = get_group_creds(&gr, &event->gid); |
2304 | if (r < 0) { | |
2305 | if (r == -ENOENT || r == -ESRCH) | |
00b06165 | 2306 | log_error("specified group '%s' unknown\n", group); |
23bf8dd7 | 2307 | else |
00b06165 | 2308 | log_error("error resolving group '%s': %s\n", group, strerror(-r)); |
23bf8dd7 TG |
2309 | |
2310 | event->gid = 0; | |
2311 | } | |
9f6445e3 | 2312 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2313 | event->gid, |
915bf0f6 | 2314 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2315 | rule->rule.filename_line); |
912541b0 KS |
2316 | break; |
2317 | } | |
2318 | case TK_A_MODE: { | |
2319 | char mode_str[UTIL_NAME_SIZE]; | |
2320 | mode_t mode; | |
2321 | char *endptr; | |
2322 | ||
2323 | if (event->mode_final) | |
2324 | break; | |
915bf0f6 | 2325 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str)); |
912541b0 KS |
2326 | mode = strtol(mode_str, &endptr, 8); |
2327 | if (endptr[0] != '\0') { | |
9f6445e3 | 2328 | log_error("ignoring invalid mode '%s'", mode_str); |
912541b0 KS |
2329 | break; |
2330 | } | |
2331 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2332 | event->mode_final = true; | |
2333 | event->mode_set = true; | |
2334 | event->mode = mode; | |
9f6445e3 | 2335 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2336 | event->mode, |
915bf0f6 | 2337 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2338 | rule->rule.filename_line); |
912541b0 KS |
2339 | break; |
2340 | } | |
2341 | case TK_A_OWNER_ID: | |
2342 | if (event->owner_final) | |
2343 | break; | |
2344 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2345 | event->owner_final = true; | |
1edefa4f | 2346 | event->owner_set = true; |
912541b0 | 2347 | event->uid = cur->key.uid; |
9f6445e3 | 2348 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2349 | event->uid, |
915bf0f6 | 2350 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2351 | rule->rule.filename_line); |
912541b0 KS |
2352 | break; |
2353 | case TK_A_GROUP_ID: | |
2354 | if (event->group_final) | |
2355 | break; | |
2356 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2357 | event->group_final = true; | |
1edefa4f | 2358 | event->group_set = true; |
912541b0 | 2359 | event->gid = cur->key.gid; |
9f6445e3 | 2360 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2361 | event->gid, |
915bf0f6 | 2362 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2363 | rule->rule.filename_line); |
912541b0 KS |
2364 | break; |
2365 | case TK_A_MODE_ID: | |
2366 | if (event->mode_final) | |
2367 | break; | |
2368 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2369 | event->mode_final = true; | |
2370 | event->mode_set = true; | |
2371 | event->mode = cur->key.mode; | |
9f6445e3 | 2372 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2373 | event->mode, |
915bf0f6 | 2374 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2375 | rule->rule.filename_line); |
912541b0 | 2376 | break; |
c26547d6 KS |
2377 | case TK_A_SECLABEL: { |
2378 | const char *name, *label; | |
2379 | ||
2380 | name = rules_str(rules, cur->key.attr_off); | |
2381 | label = rules_str(rules, cur->key.value_off); | |
2382 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2383 | udev_list_cleanup(&event->seclabel_list); | |
2384 | udev_list_entry_add(&event->seclabel_list, name, label); | |
9f6445e3 | 2385 | log_debug("SECLABEL{%s}='%s' %s:%u", |
c26547d6 KS |
2386 | name, label, |
2387 | rules_str(rules, rule->rule.filename_off), | |
2388 | rule->rule.filename_line); | |
2389 | break; | |
2390 | } | |
912541b0 | 2391 | case TK_A_ENV: { |
915bf0f6 KS |
2392 | const char *name = rules_str(rules, cur->key.attr_off); |
2393 | char *value = rules_str(rules, cur->key.value_off); | |
07845c14 KS |
2394 | char value_new[UTIL_NAME_SIZE]; |
2395 | const char *value_old = NULL; | |
2396 | struct udev_list_entry *entry; | |
912541b0 | 2397 | |
07845c14 KS |
2398 | if (value[0] == '\0') { |
2399 | if (cur->key.op == OP_ADD) | |
2400 | break; | |
912541b0 | 2401 | udev_device_add_property(event->dev, name, NULL); |
07845c14 | 2402 | break; |
912541b0 | 2403 | } |
07845c14 KS |
2404 | |
2405 | if (cur->key.op == OP_ADD) | |
2406 | value_old = udev_device_get_property_value(event->dev, name); | |
2407 | if (value_old) { | |
2408 | char temp[UTIL_NAME_SIZE]; | |
2409 | ||
2410 | /* append value separated by space */ | |
2411 | udev_event_apply_format(event, value, temp, sizeof(temp)); | |
d5a89d7d | 2412 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 KS |
2413 | } else |
2414 | udev_event_apply_format(event, value, value_new, sizeof(value_new)); | |
2415 | ||
2416 | entry = udev_device_add_property(event->dev, name, value_new); | |
2417 | /* store in db, skip private keys */ | |
2418 | if (name[0] != '.') | |
2419 | udev_list_entry_set_num(entry, true); | |
912541b0 KS |
2420 | break; |
2421 | } | |
2422 | case TK_A_TAG: { | |
2423 | char tag[UTIL_PATH_SIZE]; | |
2424 | const char *p; | |
2425 | ||
915bf0f6 | 2426 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag)); |
912541b0 KS |
2427 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2428 | udev_device_cleanup_tags_list(event->dev); | |
2429 | for (p = tag; *p != '\0'; p++) { | |
2430 | if ((*p >= 'a' && *p <= 'z') || | |
2431 | (*p >= 'A' && *p <= 'Z') || | |
2432 | (*p >= '0' && *p <= '9') || | |
2433 | *p == '-' || *p == '_') | |
2434 | continue; | |
9f6445e3 | 2435 | log_error("ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2436 | break; |
2437 | } | |
8e3ba377 DH |
2438 | if (cur->key.op == OP_REMOVE) |
2439 | udev_device_remove_tag(event->dev, tag); | |
2440 | else | |
2441 | udev_device_add_tag(event->dev, tag); | |
912541b0 KS |
2442 | break; |
2443 | } | |
2444 | case TK_A_NAME: { | |
915bf0f6 | 2445 | const char *name = rules_str(rules, cur->key.value_off); |
0ecfcbd4 | 2446 | |
912541b0 KS |
2447 | char name_str[UTIL_PATH_SIZE]; |
2448 | int count; | |
2449 | ||
2450 | if (event->name_final) | |
2451 | break; | |
2452 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2453 | event->name_final = true; | |
2454 | udev_event_apply_format(event, name, name_str, sizeof(name_str)); | |
2455 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2456 | count = util_replace_chars(name_str, "/"); | |
2457 | if (count > 0) | |
9f6445e3 | 2458 | log_debug("%i character(s) replaced", count); |
912541b0 | 2459 | } |
6ada823a | 2460 | if (major(udev_device_get_devnum(event->dev)) && |
4cb72937 | 2461 | (!streq(name_str, udev_device_get_devnode(event->dev) + strlen("/dev/")))) { |
6ada823a KS |
2462 | log_error("NAME=\"%s\" ignored, kernel device nodes " |
2463 | "can not be renamed; please fix it in %s:%u\n", name, | |
915bf0f6 | 2464 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
6ada823a | 2465 | break; |
0ecfcbd4 | 2466 | } |
912541b0 KS |
2467 | free(event->name); |
2468 | event->name = strdup(name_str); | |
9f6445e3 | 2469 | log_debug("NAME '%s' %s:%u", |
baa30fbc | 2470 | event->name, |
915bf0f6 | 2471 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2472 | rule->rule.filename_line); |
912541b0 KS |
2473 | break; |
2474 | } | |
2475 | case TK_A_DEVLINK: { | |
2476 | char temp[UTIL_PATH_SIZE]; | |
2477 | char filename[UTIL_PATH_SIZE]; | |
2478 | char *pos, *next; | |
2479 | int count = 0; | |
2480 | ||
2481 | if (event->devlink_final) | |
2482 | break; | |
2483 | if (major(udev_device_get_devnum(event->dev)) == 0) | |
2484 | break; | |
2485 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2486 | event->devlink_final = true; | |
2487 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2488 | udev_device_cleanup_devlinks_list(event->dev); | |
2489 | ||
2490 | /* allow multiple symlinks separated by spaces */ | |
915bf0f6 | 2491 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp)); |
912541b0 KS |
2492 | if (esc == ESCAPE_UNSET) |
2493 | count = util_replace_chars(temp, "/ "); | |
2494 | else if (esc == ESCAPE_REPLACE) | |
2495 | count = util_replace_chars(temp, "/"); | |
2496 | if (count > 0) | |
9f6445e3 | 2497 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2498 | pos = temp; |
2499 | while (isspace(pos[0])) | |
2500 | pos++; | |
2501 | next = strchr(pos, ' '); | |
2502 | while (next != NULL) { | |
2503 | next[0] = '\0'; | |
9f6445e3 | 2504 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2505 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2506 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2507 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2508 | while (isspace(next[1])) |
2509 | next++; | |
2510 | pos = &next[1]; | |
2511 | next = strchr(pos, ' '); | |
2512 | } | |
2513 | if (pos[0] != '\0') { | |
9f6445e3 | 2514 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2515 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2516 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2517 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2518 | } |
2519 | break; | |
2520 | } | |
2521 | case TK_A_ATTR: { | |
915bf0f6 | 2522 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
2523 | char attr[UTIL_PATH_SIZE]; |
2524 | char value[UTIL_NAME_SIZE]; | |
2525 | FILE *f; | |
2526 | ||
2527 | if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) | |
d5a89d7d | 2528 | strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL); |
912541b0 KS |
2529 | attr_subst_subdir(attr, sizeof(attr)); |
2530 | ||
915bf0f6 | 2531 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); |
9f6445e3 | 2532 | log_debug("ATTR '%s' writing '%s' %s:%u", attr, value, |
915bf0f6 | 2533 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2534 | rule->rule.filename_line); |
47ef94ac | 2535 | f = fopen(attr, "we"); |
912541b0 KS |
2536 | if (f != NULL) { |
2537 | if (fprintf(f, "%s", value) <= 0) | |
9f6445e3 | 2538 | log_error("error writing ATTR{%s}: %m", attr); |
912541b0 KS |
2539 | fclose(f); |
2540 | } else { | |
9f6445e3 | 2541 | log_error("error opening ATTR{%s} for writing: %m", attr); |
912541b0 KS |
2542 | } |
2543 | break; | |
2544 | } | |
83cd6b75 KS |
2545 | case TK_A_RUN_BUILTIN: |
2546 | case TK_A_RUN_PROGRAM: { | |
2547 | struct udev_list_entry *entry; | |
2548 | ||
912541b0 KS |
2549 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2550 | udev_list_cleanup(&event->run_list); | |
9f6445e3 | 2551 | log_debug("RUN '%s' %s:%u", |
915bf0f6 KS |
2552 | rules_str(rules, cur->key.value_off), |
2553 | rules_str(rules, rule->rule.filename_off), | |
baa30fbc | 2554 | rule->rule.filename_line); |
915bf0f6 | 2555 | entry = udev_list_entry_add(&event->run_list, rules_str(rules, cur->key.value_off), NULL); |
83cd6b75 | 2556 | udev_list_entry_set_num(entry, cur->key.builtin_cmd); |
912541b0 KS |
2557 | break; |
2558 | } | |
2559 | case TK_A_GOTO: | |
2560 | if (cur->key.rule_goto == 0) | |
2561 | break; | |
2562 | cur = &rules->tokens[cur->key.rule_goto]; | |
2563 | continue; | |
2564 | case TK_END: | |
2565 | return 0; | |
2566 | ||
2567 | case TK_M_PARENTS_MIN: | |
2568 | case TK_M_PARENTS_MAX: | |
2569 | case TK_M_MAX: | |
2570 | case TK_UNSET: | |
9f6445e3 | 2571 | log_error("wrong type %u", cur->type); |
912541b0 KS |
2572 | goto nomatch; |
2573 | } | |
2574 | ||
2575 | cur++; | |
2576 | continue; | |
2577 | nomatch: | |
2578 | /* fast-forward to next rule */ | |
2579 | cur = rule + rule->rule.token_count; | |
912541b0 | 2580 | } |
6880b25d | 2581 | } |
761dfddc | 2582 | |
9ec6e95b | 2583 | int udev_rules_apply_static_dev_perms(struct udev_rules *rules) { |
912541b0 KS |
2584 | struct token *cur; |
2585 | struct token *rule; | |
2586 | uid_t uid = 0; | |
2587 | gid_t gid = 0; | |
2588 | mode_t mode = 0; | |
84b6ad70 TG |
2589 | _cleanup_strv_free_ char **tags = NULL; |
2590 | char **t; | |
2591 | FILE *f = NULL; | |
2592 | _cleanup_free_ char *path = NULL; | |
2593 | int r = 0; | |
912541b0 KS |
2594 | |
2595 | if (rules->tokens == NULL) | |
84b6ad70 | 2596 | return 0; |
912541b0 KS |
2597 | |
2598 | cur = &rules->tokens[0]; | |
2599 | rule = cur; | |
2600 | for (;;) { | |
2601 | switch (cur->type) { | |
2602 | case TK_RULE: | |
2603 | /* current rule */ | |
2604 | rule = cur; | |
2605 | ||
2606 | /* skip rules without a static_node tag */ | |
2607 | if (!rule->rule.has_static_node) | |
2608 | goto next; | |
2609 | ||
2610 | uid = 0; | |
2611 | gid = 0; | |
2612 | mode = 0; | |
84b6ad70 TG |
2613 | strv_free(tags); |
2614 | tags = NULL; | |
912541b0 KS |
2615 | break; |
2616 | case TK_A_OWNER_ID: | |
2617 | uid = cur->key.uid; | |
2618 | break; | |
2619 | case TK_A_GROUP_ID: | |
2620 | gid = cur->key.gid; | |
2621 | break; | |
2622 | case TK_A_MODE_ID: | |
2623 | mode = cur->key.mode; | |
84b6ad70 TG |
2624 | break; |
2625 | case TK_A_TAG: | |
2626 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2627 | if (r < 0) | |
2628 | goto finish; | |
2629 | ||
912541b0 KS |
2630 | break; |
2631 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2632 | char device_node[UTIL_PATH_SIZE]; |
2633 | char tags_dir[UTIL_PATH_SIZE]; | |
2634 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2635 | struct stat stats; |
2636 | ||
2637 | /* we assure, that the permissions tokens are sorted before the static token */ | |
ca2bb160 | 2638 | |
84b6ad70 | 2639 | if (mode == 0 && uid == 0 && gid == 0 && tags == NULL) |
912541b0 | 2640 | goto next; |
d6f116a7 | 2641 | |
84b6ad70 | 2642 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
ca2bb160 KS |
2643 | if (stat(device_node, &stats) != 0) |
2644 | break; | |
2645 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2646 | break; | |
84b6ad70 | 2647 | |
d6f116a7 | 2648 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2649 | if (tags) { |
84b6ad70 TG |
2650 | STRV_FOREACH(t, tags) { |
2651 | _cleanup_free_ char *unescaped_filename = NULL; | |
2652 | ||
2653 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2654 | r = mkdir_p(tags_dir, 0755); | |
2655 | if (r < 0) { | |
da927ba9 | 2656 | log_error_errno(r, "failed to create %s: %m", tags_dir); |
84b6ad70 TG |
2657 | return r; |
2658 | } | |
2659 | ||
2660 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2661 | ||
2662 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2663 | r = symlink(device_node, tag_symlink); | |
2664 | if (r < 0 && errno != EEXIST) { | |
9f6445e3 | 2665 | log_error("failed to create symlink %s -> %s: %m", tag_symlink, device_node); |
84b6ad70 TG |
2666 | return -errno; |
2667 | } else | |
2668 | r = 0; | |
2669 | } | |
2670 | } | |
2671 | ||
15a72200 TG |
2672 | /* don't touch the permissions if only the tags were set */ |
2673 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2674 | break; |
2675 | ||
912541b0 KS |
2676 | if (mode == 0) { |
2677 | if (gid > 0) | |
2678 | mode = 0660; | |
2679 | else | |
2680 | mode = 0600; | |
2681 | } | |
2682 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 TG |
2683 | r = chmod(device_node, mode); |
2684 | if (r < 0) { | |
9f6445e3 | 2685 | log_error("failed to chmod '%s' %#o", device_node, mode); |
490f0087 TG |
2686 | return -errno; |
2687 | } else | |
9f6445e3 | 2688 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2689 | } |
2690 | ||
2691 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 TG |
2692 | r = chown(device_node, uid, gid); |
2693 | if (r < 0) { | |
9f6445e3 | 2694 | log_error("failed to chown '%s' %u %u ", device_node, uid, gid); |
490f0087 TG |
2695 | return -errno; |
2696 | } else | |
9f6445e3 | 2697 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2698 | } |
2699 | ||
84b6ad70 | 2700 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2701 | break; |
2702 | } | |
2703 | case TK_END: | |
84b6ad70 | 2704 | goto finish; |
912541b0 KS |
2705 | } |
2706 | ||
2707 | cur++; | |
2708 | continue; | |
761dfddc | 2709 | next: |
912541b0 KS |
2710 | /* fast-forward to next rule */ |
2711 | cur = rule + rule->rule.token_count; | |
2712 | continue; | |
2713 | } | |
84b6ad70 TG |
2714 | |
2715 | finish: | |
2716 | if (f) { | |
2717 | fflush(f); | |
2718 | fchmod(fileno(f), 0644); | |
2719 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
2720 | r = -errno; | |
2721 | unlink("/run/udev/static_node-tags"); | |
2722 | unlink(path); | |
2723 | } | |
2724 | fclose(f); | |
2725 | } | |
2726 | ||
2727 | return r; | |
761dfddc | 2728 | } |